CN102428317B - Light source device and display device - Google Patents

Abstract

The invention provides a light source device and a display device, wherein even if an optical sheet is held on an LED substrate, the optical sheet does not generate wrinkles. Since the reflection sheet (11) is disposed between the head of each rivet having a head, the head of each set rivet having a head, and the head of each support rivet having a head, and the surface of the LED substrate (8) on which the LED is mounted, and a gap is provided in the sheet thickness direction between the head of each rivet and the reflection sheet (11), when a rapid thermal change occurs, the reflection sheet (11) expands and contracts between the head of each rivet and the reflection sheet (11), and wrinkles in the reflection sheet (11) can be prevented.

Description

Light source device and display device

technical field

The present invention relates to a light source device provided with a light emitting element, and a display device equipped with the light source device for displaying video.

Background technique

A so-called thin liquid crystal display device such as a liquid crystal television includes a substantially rectangular parallelepiped display unit having a display surface on which an image is displayed on the front side, and a light source device arranged on the back side of the display unit to irradiate light to the display unit. Optical sheets such as a diffusion plate and a prism sheet are disposed between the device and the display unit.

The display unit has a substantially rectangular parallelepiped liquid crystal display panel. Since the liquid crystal display panel itself cannot emit light, it needs an illumination source for displaying video on the display surface, and a backlight device is used as the illumination source.

The backlight device generally adopts the following two methods: that is, the edge-light method, in which the light guide plate is arranged on the back side of the display part, and the illumination light source is arranged on the edge side of the light guide plate; and the direct-down method, in which the The diffusion plate is disposed on the rear side of the display unit, and the illumination light source is disposed on the rear side of the diffusion plate.

For the edge light method of the backlight device, since cold cathode fluorescent lamps (CCFL) are arranged on the edge side of the light guide plate, the light incident from the edge of the light guide plate is guided from one surface of the light guide plate while being guided in the light guide plate. Therefore, it is possible to improve luminance characteristics in a display device having a small display surface area. However, since it is difficult to uniformly improve luminance characteristics in a display device having a large display surface area, a direct-type backlight device is used in display devices such as televisions that are increasingly larger in size.

For the direct type backlight device, the following two types of light sources are generally used as the illumination light source: that is, the CCFL type illumination light source, which has electrodes at both ends and is arranged side by side on the back side of the diffusion plate. A plurality of cold cathode fluorescent lamps (CCFL) in a straight tube shape or a substantially U shape (for example, refer to Patent Document 1); A plurality of light emitting diodes (LEDs) (for example, refer to Patent Documents 2 to 5).

The CCFL type backlight device includes: a plurality of cold-cathode fluorescent lamps separated up and down in the direction along the surface of the diffuser and arranged side by side; a support case for accommodating and supporting the cold-cathode fluorescent lamps; an inverter for making the cold-cathode fluorescent lamps emit light a circuit substrate; and a cover plate covering the inverter circuit substrate.

However, since the CCFL type backlight device requires high-voltage parts such as an inverter circuit board for discharging the cold-cathode fluorescent lamp and electrodes at both ends of the cold-cathode fluorescent lamp, it is necessary to ensure a long insulation around the high-voltage parts. distance, therefore, the high-voltage components become an obstacle to shorten the front and rear thickness. Therefore, recent display devices tend to adopt LED-type backlight devices, which have no high-voltage parts and do not need to ensure a long insulation distance, and are more conducive to shortening the front and rear thickness than CCFL-type backlight devices.

In addition, since the cold-cathode fluorescent lamps have a length arranged across both lateral ends of the diffusion plate, it is impossible to control the lighting of the cold-cathode fluorescent lamps in a fine range. In addition, compared with the LED type, the high-speed flicker control for suppressing moving image blur is inferior. In addition, in order to light a plurality of cold-cathode fluorescent lamps with a high voltage, the power consumption is large, and thus the amount of heat generated when the cold-cathode fluorescent lamps are turned on is also large. Therefore, it is more advantageous to use an LED-type backlight device that can be easily controlled in a fine range, can perform high-speed flicker control, and can make power consumption and heat generation smaller than that of a CCFL-type backlight device.

The LED-type backlight device includes: a plurality of light-emitting diode substrates on which a plurality of light-emitting diodes are mounted on one surface; a support case for accommodating and supporting the light-emitting diode substrates; and a power supply substrate for causing the light-emitting diodes to emit light.

The applicant of the present invention has developed an LED-type backlight device. The LED-type backlight device includes: a plurality of light-emitting diode substrates. The plurality of light-emitting diode substrates are rectangular and connected in a row. a light-emitting diode; a supporting shell, which accommodates and supports multiple columns of the light-emitting diode substrates separated up and down; a shaft body, the shaft body is a rivet for fixing the two ends of the light-emitting diode substrate; a connector , the connector connects adjacent light-emitting diode substrates to each other; a plurality of lenses, the plurality of lenses are installed on one surface of the light-emitting diode substrate, opposite to the light-emitting diodes, so that the light emitted by the light-emitting diodes is diffused; reflection a reflective sheet placed on one surface of the light-emitting diode substrate to reflect light diffused by the lens; and a support pin for suppressing bending of the diffusion plate.

This LED-type backlight unit is assembled through the following steps (1) to (5).

(1) Place the supporting case flat on the operating table with the open side facing upwards, and in the supporting case, a plurality of horizontally adjacent light-emitting diode substrates are arranged side by side in multiple rows.

(2) The adjacent light-emitting diode substrates are connected to each other with a connector, and the end of the end-side light-emitting diode substrate is connected to a connector for power supply connection.

(3) Fix both ends of the light-emitting diode substrates arranged side by side to the supporting case with a shaft such as a rivet.

(4) A reflective sheet is placed on one surface of the light emitting diode substrate.

(5) Attach a plurality of support pins to the support case from the reflection sheet side.

The supporting case is formed by molding a metal plate, and has a quadrangular flat plate, a frame portion connected to the periphery of the plate portion with one side open, and four cornices connected to the outer edge of the frame portion . On the plate portion, first mounting holes are provided at positions facing both ends of the light emitting diode substrates arranged side by side, and second mounting holes are provided at positions where the support pins are arranged.

The light-emitting diode substrate is rectangular, and has a circuit part on one surface, and the light-emitting diode and the lens are installed on this one surface, and a connection part is provided on one surface of the two ends, and the first installation hole is provided on the two ends. corresponding through holes.

The light emitting diode is formed so that emitted light is concentrated within a predetermined angle with respect to the optical axis extending from the front surface of the light emitting diode.

The lens is spaced apart from the top of the light emitting diode, and is in the shape of a thick disk, and has a hemispherical concave portion for diffusing the light emitted from the light emitting diode to the surroundings.

The reflection sheet is quadrilateral corresponding to the plate portion of the supporting housing, and has the following structure: that is, at a position opposite to the lens, a first hole with a shape larger than the lens is provided, and at a position opposite to the connector At the position, a second hole with a shape larger than the connector is provided. When placing the reflective sheet on one surface of the light-emitting diode substrate, the lens is arranged in the first hole, and the connector is arranged in the second hole. In the hole, the thermal expansion of the reflector caused by the LED can be absorbed.

In Patent Document 2, a technique is described in which a plurality of light-emitting diode substrates with a plurality of light-emitting diodes mounted on one surface are arranged adjacent to each other on the bottom of a box-shaped support, and on the surface of the support A reflective sheet for reflecting light emitted by the light emitting diodes is pasted, and screws are inserted through the through holes provided on the respective light emitting diode substrates to fix the light emitting diode substrates on the support body.

Patent Document 1: Japanese Patent Laid-Open No. 2008-116832

Patent Document 2: Japanese Patent Laid-Open No. 2006-114445

Patent Document 3: Japanese Patent Laid-Open No. 2009-87879

Patent Document 4: Japanese Patent Laid-Open No. 2007-311561

Patent Document 5: Japanese Patent Laid-Open No. 2009-4116

Contents of the invention

However, in the LED-type backlight device described in Patent Document 2, there is a problem that, when the reflective sheet fixed to one surface of the light-emitting diode substrate with screws expands and contracts due to sudden thermal changes, the Wrinkles are formed on the reflective sheet due to expansion and contraction, which degrades the optical characteristics of the liquid crystal display device.

In addition, in the LED type backlight device, there is also the following problem: that is, when the circuit board is fixed to the support body by a fixing member such as a screw or a rivet, since the reflectivity of the head of the fixing member is lower than that of a normal reflection sheet Therefore, if a plurality of fixtures are arranged in a straight line, for example, the luminance of the reflected light near the fixtures becomes low, resulting in non-uniform brightness of the linear illumination light.

In addition, in the LED-type backlight device, since the light diffused by the lens is irradiated obliquely relative to one surface of the LED substrate, it will be blocked by the head of the screw used to fix the LED substrate, so that the light on the display panel A shadow is cast on the screen. In this case, so-called brightness unevenness occurs, which degrades the quality of the display device.

The present invention was made in view of the above circumstances, and an object of the present invention is to provide a display device that does not cause wrinkles on the optical sheet even if the optical sheet is held on a substrate on which light-emitting elements such as light-emitting diodes are mounted. .

Another object is to provide a light source device capable of suppressing unevenness in illumination brightness caused by a fixture, and a display device including the light source device.

Another object of the present invention is to provide a display device that prevents the display device from being damaged by the light-emitting element even if a fixing member is provided on one surface of the substrate when a substrate having a light-emitting element provided on one surface thereof is fixed to a support plate. The brightness unevenness caused by the fixing member.

A display device according to the present invention includes: a substrate on one surface of which is mounted a light-emitting element that irradiates a display panel; a support plate that supports the other surface of the substrate; and a reflective sheet configured with On one surface of the substrate, the light irradiated from the light-emitting element is reflected, and the display device has: a substrate hole, which is provided on the substrate; a through hole, which passes through A hole is provided on the support plate at a position corresponding to the substrate hole; an insertion hole is provided on the reflective sheet at a position corresponding to the substrate hole; and a rivet has a a head and a foot extending from the head, and the foot is inserted into the substrate hole, the through hole, and the insertion hole from one side of the substrate, and the head and the There are gaps between the reflecting sheets.

In the present invention, a reflective sheet is disposed between the head of the rivet and one surface of the substrate, and a gap is provided between the head of the rivet and the reflective sheet. The head of the rivet expands and contracts with the reflective sheet.

The display device according to the present invention preferably adopts the following structure: that is, the insertion hole has a diameter larger than that of the substrate hole, and has a ring-shaped locking portion, and the locking portion is positioned between the insertion holes. The inner side of the hole is locked to an edge portion of the substrate hole, and when the leg is inserted into the locking portion, the head abuts against the locking portion.

In the present invention, the leg portion of the rivet is inserted into the locking portion in a state where the locking portion is locked to the edge portion of the substrate hole. At this time, the head of the rivet is in contact with the locking portion, and the reflective sheet is held with a slight gap between the head and the reflective sheet.

The display device involved in the present invention preferably adopts the following structure: that is, it includes a positioning hole and a positioning portion, the positioning hole is opened on the substrate, and is adjacent to the substrate hole on the inner side of the insertion hole, and is used for alignment. The reflective sheet is positioned, and the positioning portion is adjacent to the foot portion, extends from the head portion to the side of the substrate, and is inserted into the positioning hole.

In the present invention, the positioning part is arranged on the head of the rivet, and the positioning part is inserted into the positioning hole, so that when the reflective sheet moves, the reflective sheet will abut against the positioning part, which can prevent the reflective sheet from moving. move.

The display device according to the present invention preferably adopts the following structure: that is, it includes a diffuser plate facing the reflective sheet to diffuse light, and a support portion extending from the head to the One side of the diffusion plate extends to support the diffusion plate.

In the present invention, the reflection sheet is held and the diffuser plate is supported by providing the support portion at the head of the rivet, thereby preventing the diffuser plate from bending and reducing the number of parts.

The light source device involved in the present invention includes: a circuit board on which a light-emitting element is mounted on one surface; a support body located on the other side of the circuit board to support the circuit board; a plurality of a fixing member, the plurality of fixing members are separately arranged on the side of the one surface of the circuit board, and are used to fix the circuit board on the support body; and a reflection member, the reflection member has a The openings through which the plurality of fixing pieces are inserted are arranged on the side of the one surface of the circuit board, and it is characterized in that, in the light source device, the plurality of fixing pieces are arranged in a zigzag shape.

According to the present invention, the circuit board can be fixed on the support on the other side by using a plurality of fixing members inserted through the opening arranged on one of the circuit boards on which the light-emitting element is mounted on one side. Reflecting members on one side of the circuit board are separated from each other and arranged in a zigzag pattern on one side of the circuit board. In this case, since the plurality of fixtures are arranged in a zigzag pattern, the influence of the decrease in brightness caused by the fixtures with low reflectance can be dispersed, thereby suppressing uneven brightness of the illumination light.

The light source device according to the present invention preferably adopts the following structure: the circuit board has an insertion hole through which the fixing member is inserted, the plurality of fixing members are inserted through the insertion hole of the circuit board, and held by the support.

According to the present invention, the plurality of fixing members arranged on one side of the circuit board are inserted through the opening of the reflection member and the insertion hole of the circuit board, and are held by the support on the other side of the circuit board, thereby , fixing the circuit board on the support body.

The light source device according to the present invention preferably adopts a structure in which a plurality of the light-emitting elements are arranged side by side along the long side direction of a rectangular circuit board, and the circuit board has the insertion holes at a plurality of positions in the long side direction. A plurality of the circuit substrates are arranged side by side along the width direction, and for the circuit substrates adjacent to each other in the direction of the arrangement of the plurality of circuit substrates, the insertion holes at the positions of the plurality of positions are arranged in a staggered manner .

According to the present invention, a plurality of rectangular circuit boards are arranged side by side along the width direction, and the circuit boards are provided with a plurality of light-emitting elements side by side along the long side direction of the circuit board, and a plurality of fixing members arranged on one side of each circuit board The through-holes at a plurality of locations in the longitudinal direction of each circuit board are inserted, and are held by a support located on the other side of each circuit board. In this case, since the fixing members inserted through the following insertion holes located in the longitudinal direction of the circuit boards adjacent to each other in the direction in which the plurality of rectangular circuit boards are arranged side by side are arranged in a zigzag pattern. Therefore, it is possible to disperse the decrease in luminance caused by the fixing member having a low reflectance, thereby suppressing unevenness in luminance of the illumination light.

The light source device according to the present invention preferably adopts a structure in which a plurality of the light-emitting elements are arranged side by side along the long side direction of a rectangular circuit board, and the circuit board has the insertion holes at a plurality of positions in the long side direction. , a plurality of the circuit substrates are arranged side by side in a row along the long side direction, and a plurality of rows are arranged side by side in the width direction. In the circuit boards adjacent to each other in the direction perpendicular to the column of the block circuit boards, the insertion holes at the respective positions of the plurality of locations are arranged in a zigzag pattern.

According to the present invention, a plurality of rectangular circuit substrates are arranged side by side in a row along the longitudinal direction, and a plurality of rows of the plurality of circuit substrates arranged side by side in a row are arranged in a row along the width direction, and the circuit substrates are arranged along the length of the circuit substrate. A plurality of light-emitting elements are arranged side by side in the longitudinal direction, and a plurality of fixing members arranged on one side of each circuit board are inserted through the insertion holes at a plurality of positions in the longitudinal direction of each circuit board, and are received by each circuit board. The support body on the other side of the face is held. In this case, since the fixing members inserted into the following through holes are arranged in a zigzag pattern, the through holes are located opposite to each other in the direction perpendicular to the row of the plurality of rectangular circuit boards arranged side by side in a row. Therefore, it is possible to disperse the decrease in luminance caused by the fixture with low reflectance, thereby suppressing the unevenness of the luminance of the illumination light.

The light source device according to the present invention preferably adopts a structure in which the circuit boards adjacent to each other in the direction perpendicular to the row of the plurality of circuit boards arranged in a row are arranged in the longitudinal direction. The dimensions are basically the same, and the insertion holes are provided at both ends in the longitudinal direction, and the insertion holes at both ends in the longitudinal direction are respectively arranged in a zigzag pattern.

According to the present invention, a plurality of rectangular circuit substrates are arranged side by side in a row along the long side direction, and a plurality of rows of said plurality of circuit substrates arranged side by side in a row are arranged side by side in the width direction, so that The dimensions of the arranged circuit substrates in the longitudinal direction are basically the same, and the circuit substrates are provided with a plurality of light-emitting elements side by side along the longitudinal direction of the circuit substrates, and the plugs at both ends of the circuit substrates in the longitudinal direction are inserted. The fixing member of the through hole is held by the support body located on the other side of each circuit board. In this case, since the fixing members inserted into the lower insertion holes are arranged in a zigzag pattern, the insertion holes are respectively located in the direction perpendicular to the row of the plurality of circuit boards arranged in a row in the direction of the long side. The two ends of the respective circuit boards having substantially the same size and being adjacent to each other can disperse the decrease in luminance caused by the fixture with low reflectivity, thereby suppressing the unevenness of the luminance of the illumination light.

The light source device according to the present invention preferably has a structure in which a through hole corresponding to the insertion hole is formed in the support body, and the fixing member is a rivet including a cylindrical member and a shaft member. , the cylindrical member has an outer diameter capable of being inserted through the insertion hole and the through hole, one end is provided with a flange portion that cannot be inserted through the insertion hole and the through hole, and the inner diameter of the other end is smaller than that of the one end The shaft member can be inserted into one end of the cylindrical member, has a shaft portion having a diameter larger than the inner diameter of the other end, and a head portion that cannot be inserted through the insertion hole and the through hole.

According to the present invention, the other end of the cylindrical member of the rivet is inserted into each insertion hole of the circuit board, and then the cylindrical member is inserted through the corresponding insertion hole formed in the supporting body on the other side of the circuit board. Each of the through holes receives the flange portion of one end of the cylindrical member with the circuit board. Next, if the shaft portion of the shaft member is inserted into one end of the tube member, and the flange portion of the tube member is used to receive the head portion of the shaft member, since the diameter of the shaft portion is larger than the inner diameter of the other end of the tube member, The other end of the cylindrical member is expanded by the shaft portion to increase the outer diameter so that it cannot be inserted through the through hole of the support body, and a pressing force is applied to the shaft portion of the shaft member to hold the rivet in the support body. By pulling out the head of the shaft member or pressing the shaft toward the head, the shaft member is removed from the tube member, and the tube member is taken out from the through hole of the support body and the insertion hole of the circuit board, As a result, each circuit board is no longer supported by the support body.

A display device according to the present invention is characterized by comprising: a display unit having a display surface on one side; and the light source device disposed on the other side of the display unit.

According to the present invention, the light emitted from the light emitting element mounted on the light source device is arranged on the other side of the display part having a display surface on one side to illuminate the display part by entering into the display part.

A display device according to the present invention includes: a substrate on one surface of which is mounted a light-emitting element that irradiates light to a display panel; a support plate that supports the other surface of the substrate; a plurality of through holes, the plurality of The through holes are respectively provided on the base plate and the support plate, and the positions correspond to each other; and a fixing member, which includes a head and a foot protruding from the head, and the base plate is inserted from one surface side of the base plate. The legs are inserted into the through holes, and the head is arranged on one side of the substrate to fix the substrate on the support plate. In the display device, the A dimension from the substrate to the top of the head is shorter than a dimension from the substrate to the top of the light emitting element.

In the present invention, the dimension from the substrate to the top of the head is made shorter than the dimension from the substrate to the top of the light-emitting element according to the irradiation range of light irradiated from the light-emitting element, thereby reliably avoiding light from the light-emitting element. The emitted light is blocked by the head of the fixing member.

A display device according to the present invention includes: a substrate on one surface of which is mounted a light-emitting element that irradiates light to a display panel; a lens that covers the light-emitting element on one surface of the substrate; a support plate that supports The plate supports the other surface of the base plate; a plurality of through holes are respectively provided on the base plate and the support plate, and their positions correspond to each other; and a fixing member includes a head and a The legs protruding from the head are inserted into the through holes from one side of the substrate, and the head is arranged on the one side of the substrate to fix the substrate to the substrate. In the above support plate, in the display device, the dimension from the substrate to the top of the head is shorter than the dimension from the substrate to the top of the lens.

In the present invention, the dimension from the substrate to the top of the head is made shorter than the dimension from the substrate to the top of the lens according to the irradiation range of light diffused by the lens, thereby preventing the diffused light from being fixed. occluded by the head of the component.

The display device according to the present invention preferably has a structure in which a dimension from the substrate to the top of the head is shorter than a dimension from the substrate to the top of the light emitting element.

In the present invention, the dimension from the substrate to the top of the head is made shorter than the dimension from the substrate to the top of the light emitting element in consideration of the fact that the light irradiated from the light emitting element is diffused into a wide angle when passing through the lens. , so that the light diffused into a wide angle can be reliably prevented from being blocked by the head of the fixing member.

The display device according to the present invention preferably adopts the following structure: that is, it includes a reflection sheet and an insertion hole, the reflection sheet is arranged between the substrate and the head, and the light emitted from the light emitting element For reflection, the insertion holes are opened on the reflection sheet at positions corresponding to the through holes, the legs are inserted through the insertion holes, and the reflection sheet is held by the head.

In the present invention, the substrate is fixed on the support plate by the fixing member, and the reflective sheet is held by the head to prevent the reflective sheet from peeling off from the support plate and reduce the number of components used in the display device.

The display device according to the present invention preferably adopts the following structure: that is, the fixing member is a rivet.

In the present invention, the substrate is quickly and reliably fixed to the support plate by using the rivet as the fixing member.

The display device according to the present invention preferably has a structure in which the fixing member is a screw.

In the present invention, the substrate is firmly fixed to the support plate by using screws as the fixing member.

The display device according to the present invention preferably adopts the following structure: that is, the light emitting element is a light emitting diode.

In the present invention, by using a light-emitting diode as a light-emitting element, heat generation can be suppressed, and flicker control can be easily performed.

According to the display device according to the present invention, since the reflective sheet is arranged between the head of the rivet and one surface of the substrate, and a gap is provided between the head of the rivet and the reflective sheet, a rapid thermal change occurs. In the case of the rivet, the reflective sheet can be stretched between the head of the rivet and the reflective sheet, thereby preventing the reflective sheet from wrinkling.

According to the light source device according to the present invention, since the plurality of fixtures are arranged in a staggered manner, the influence of the decrease in luminance caused by the fixtures with low light reflectance can be dispersed, so that the lighting caused by the fixtures can be suppressed. The brightness of the light is uneven.

According to the light source device according to the present invention, in order to fix the circuit board to the support body, the plurality of fixing members are arranged in a zigzag shape, and the plurality of fixing members are inserted through the insertion holes of the circuit board and are received by the circuit board. Therefore, not only can the brightness unevenness of the illumination light caused by the fixture be suppressed, but also the supporting position of the supporting body to support the circuit board can be dispersed, thereby enabling stable support. .

According to the light source device according to the present invention, by setting the number of circuit boards when a plurality of rectangular circuit boards are arranged side by side along the width direction of the board, a large illumination range can be realized. The fixing members of the insertion holes are arranged in a staggered manner, and the insertion holes are located at each position of a plurality of positions in the long side direction of the circuit boards adjacent to each other in the direction of arranging a plurality of rectangular circuit boards side by side, Therefore, it is possible to disperse the influence of a decrease in luminance due to a fixing member having a low light reflectance, thereby suppressing unevenness in luminance of illumination light.

According to the light source device according to the present invention, by setting the number of rectangular circuit boards arranged in a row along the longitudinal direction and the number of rows of a plurality of circuit boards arranged in a row along the board width direction, Therefore, a larger illumination range can be realized. Moreover, since the fixing pieces inserted through the following through holes are arranged in a staggered shape, the through holes are located in the same row as the plurality of rectangular circuit boards arranged side by side in a row. The circuit boards adjacent to each other in the direction of intersection are located at various positions in the long side direction, so the influence of the decrease in brightness caused by the fixture with low light reflectance can be dispersed, thereby suppressing the illumination. The brightness of the light is uneven.

According to the light source device according to the present invention, by setting the number of rectangular circuit boards arranged in a row along the longitudinal direction and the number of rows of a plurality of circuit boards arranged in a row along the board width direction, fixed, can achieve a larger lighting range, and, because the fixing parts inserted through the following through holes are arranged in a staggered shape, the through holes are respectively located in the columns orthogonal to the rows of multiple circuit boards arranged side by side. The two ends of each circuit board adjacent to each other with substantially the same size in the long side direction in the direction of the direction can disperse the influence of the decrease in luminance caused by the fixture with low light reflectance, thereby suppressing the illumination light. Brightness is uneven.

According to the light source device according to the present invention, each circuit board can be supported on the support with simple operations using the rivet including the cylindrical member and the shaft member, and the support of each circuit board by the support can be released.

According to the display device according to the present invention, it is possible to realize a display device including a direct-type light source device in which a light-emitting element is arranged on the other side of the display portion, thereby suppressing uneven brightness of illumination light.

According to the display device according to the present invention, since the dimension from the substrate to the top of the head is shorter than the dimension from the substrate to the top of the light emitting element according to the irradiation range of light irradiated from the light emitting element, it can reliably The light irradiated from the light-emitting element is prevented from being blocked by the head of the fixing member as much as possible, and therefore, the deterioration of display quality can be prevented. In addition, since the dimension from the substrate to the top of the head is shorter than the dimension from the substrate to the top of the lens according to the irradiated range of light diffused by the lens, it is possible to avoid the spread of the diffused light by the fixed member. Therefore, the degradation of display quality due to uneven brightness of the display panel can be prevented.

Description of drawings

FIG. 1 is a schematic exploded perspective view showing the structure of a display device according to the present invention.

FIG. 2 is an exploded perspective view showing the structure of the display device according to the present invention with the case omitted.

FIG. 3 is a partial longitudinal sectional side view showing the structure of the display device according to the present invention.

FIG. 4 is a schematic perspective view showing the structure of a light source device according to the present invention.

Fig. 5 is a front view showing the structure of a light source device according to the present invention.

Fig. 6 is a partial longitudinal sectional plan view showing the structure of the light source device according to the present invention.

FIG. 7 is a schematic front view showing the structure of the substrate support.

Fig. 8 is a schematic rear view showing the structure of the light source device.

Fig. 9 is a perspective view showing the structure of a light emitting diode substrate.

Fig. 10 is a schematic front view showing an arrangement structure of a light emitting diode substrate.

Fig. 11 is an enlarged front view showing the structure of a lens and a shaft portion.

FIG. 12 is a graph showing the amount of light emitted by the light emitting diode according to the light emission angle.

Fig. 13A is an exploded sectional view showing the structure of the shaft body.

Fig. 13B is an exploded perspective view showing the structure of the shaft body.

Fig. 14A is an enlarged cross-sectional view showing the structure of the shaft portion.

Fig. 14B is an enlarged cross-sectional view showing the structure of the shaft portion.

Fig. 15 is an enlarged sectional view taken along line XV-XV in Fig. 13A.

Fig. 16 is a front view showing the structure of a reflection sheet.

Fig. 17 is a developed view showing the structure of the corner portion of the reflection sheet.

Fig. 18 is a cross-sectional view showing the structure of a support pin.

Fig. 19 is a sectional view showing the structure of a lead wire holder portion.

Fig. 20 is a cross-sectional view showing a state in which the cover of the lead wire holder is released.

Fig. 21 is a perspective view showing the structure of the lead-out hole portion of the substrate support.

Fig. 22 is a partially enlarged view showing a state in which the cover of the lead wire holder is removed.

Fig. 23 is a developed view showing another structure of the corner portion of the reflection sheet.

Fig. 24 is a front view showing another configuration of the connector-facing portion of the reflection sheet.

Fig. 25 is a front view showing another configuration of the light source device.

Fig. 26 is a schematic front view showing another structure of the substrate support.

Fig. 27 is a schematic front view showing another configuration of the reflection sheet.

Fig. 28 is a cross-sectional view showing another relationship between the reflection sheet and the shaft body.

29 is a perspective view showing the configuration of a light source device according to Embodiment 1. FIG.

FIG. 30 is a plan view showing the configuration of the light source device according to Embodiment 1. FIG.

FIG. 31 is a plan view showing a configuration in which a reflection sheet of the light source device according to Embodiment 1 is omitted.

32 is an enlarged cross-sectional view showing a part of the configuration of the light source device according to Embodiment 1. FIG.

33 is a plan view showing the configuration of a reflection sheet included in the light source device according to Embodiment 1. FIG.

Fig. 34 is an enlarged front view showing the configuration of main parts when the reflection sheet is unfolded.

Fig. 35 is an enlarged front view showing the structure of the main part of the reflection sheet.

Fig. 36 is an enlarged cross-sectional plan view showing the structure of the reflection sheet portion.

37 is a cross-sectional view showing the configuration of a display device including the light source device according to Embodiment 1. FIG.

38 is a developed front view showing another configuration of a main part of a reflection sheet included in the light source device according to Embodiment 1. FIG.

39 is a developed front view showing another configuration of main parts of the reflection sheet included in the light source device according to Embodiment 1. FIG.

Fig. 40 is an enlarged front view showing another structure of the main part of the reflection sheet.

Fig. 41A is a developed front view showing another structure of the main part of the reflection sheet.

Fig. 41B shows another structure of the main part of the reflection sheet, and is a front view of a state in which the reflection sheet is in the shape of a case.

Fig. 42 is a plan view showing another configuration of the reflection sheet.

Fig. 43 is a plan view showing another configuration of the reflection sheet.

FIG. 44 is an enlarged cross-sectional view showing part of the configuration of a light source device according to Embodiment 2. FIG.

FIG. 45 is a plan view with a part of the light source device according to Embodiment 2 omitted.

46 is a schematic perspective view of a part of the light source device according to Embodiment 2, which is disassembled.

47 is a plan view showing a state in which the light source device according to Embodiment 2 does not have a reflection sheet.

48 is a perspective view showing the configuration of a lens-mounted light-emitting diode substrate of a light source device according to Embodiment 2. FIG.

49 is a perspective view showing a configuration of a connector of a light source device according to Embodiment 2. FIG.

50 is an enlarged plan view of a portion of the reflection sheet facing the connector in the light source device according to Embodiment 2. FIG.

51 is an enlarged perspective view showing a state in which a portion of the reflection sheet facing the connector of the light source device according to Embodiment 2 is deviated in the thickness direction.

52 is a cross-sectional view showing the configuration of a display device including the light source device according to Embodiment 2. FIG.

53 is an enlarged plan view showing another configuration of the cutout portion of the reflection sheet included in the light source device according to Embodiment 2. FIG.

54 is a plan view showing another configuration of the cutout portion of the reflection sheet included in the light source device according to Embodiment 2. FIG.

55 is a plan view showing another configuration of the cutout portion of the reflection sheet included in the light source device according to Embodiment 2. FIG.

56 is a plan view showing another structure of the cutout portion of the reflection sheet included in the light source device according to Embodiment 2. FIG.

57 is a plan view showing another configuration of the notch portion of the reflection sheet included in the light source device according to the present invention according to Embodiment 2. FIG.

58 is a perspective view showing another configuration of a reflection sheet included in the light source device according to Embodiment 2. FIG.

59 is a perspective view showing another configuration of a reflection sheet included in the light source device according to Embodiment 2. FIG.

60 is a perspective view showing another configuration of a reflection sheet included in the light source device according to Embodiment 2. FIG.

FIG. 61 is a longitudinal sectional view schematically showing a display device according to Embodiment 3. FIG.

FIG. 62 is a front view schematically showing an LED and an LED substrate provided with a reflection sheet according to Embodiment 3. FIG.

FIG. 63 is a cross-sectional view taken along line I-I of FIG. 62 schematically showing a rivet according to Embodiment 3. FIG.

FIG. 64 is a cross-sectional view taken along line II-II of FIG. 62 schematically showing a positioning rivet according to Embodiment 3. FIG.

FIG. 65 is a cross-sectional view taken along line III-III in FIG. 62 schematically showing a backup rivet according to Embodiment 3. FIG.

66A is an enlarged cross-sectional view showing another structure of a portion where the LED substrate according to Embodiment 3 is fixed to a support plate.

66B is an enlarged cross-sectional view showing another structure of the portion where the LED substrate according to Embodiment 3 is fixed to the support plate.

67 is a cross-sectional view of main parts showing the configuration of a light source device according to Embodiment 4. FIG.

FIG. 68 is a plan view of a part of a light source device according to Embodiment 4. FIG.

FIG. 69 is a partially disassembled plan view of a light source device according to Embodiment 4. FIG.

FIG. 70 is a plan view of some components of a light source device according to Embodiment 4. FIG.

FIG. 71 is an enlarged plan view of a part of a light source device according to Embodiment 4. FIG.

FIG. 72 is an enlarged plan view of a part of a light source device according to Embodiment 4. FIG.

73 is a perspective view showing the structure of a lens-mounted light emitting diode substrate according to Embodiment 4. FIG.

74 is a perspective view showing the configuration of a lens-mounted light emitting diode substrate according to Embodiment 4. FIG.

FIG. 75 is a cross-sectional view showing an example of a fastener according to Embodiment 4. FIG.

76 is a cross-sectional view showing the configuration of a display device including the light source device according to Embodiment 4. FIG.

77 is a plan view of a part of a light source device according to another embodiment of the fourth embodiment.

FIG. 78 is a partially disassembled plan view of a light source device according to a second other embodiment of Embodiment 4. FIG.

79 is a plan view of some components of a light source device according to a second other embodiment of the fourth embodiment.

FIG. 80 is a longitudinal sectional view schematically showing a display device according to Embodiment 5. FIG.

81 is a front view schematically showing a light emitting diode and a substrate provided with a reflection sheet in Embodiment 5. FIG.

FIG. 82 is a graph showing the amount of light emitted by the light emitting diode according to the light emission angle.

FIG. 83 is a cross-sectional view taken along line IV-IV of FIG. 81 schematically showing the rivet according to Embodiment 5. FIG.

84 is a cross-sectional view schematically showing a rivet in a modified example of the display device according to Embodiment 5. FIG.

85 is a cross-sectional view schematically showing a screw of a display device according to Embodiment 5. FIG.

FIG. 86 is an enlarged cross-sectional view showing part of the configuration of a display device according to Embodiment 6. FIG.

FIG. 87 is an enlarged cross-sectional view showing part of the configuration of a light source unit according to Embodiment 6. FIG.

FIG. 88 is a front view showing a configuration in which a peripheral portion of a light source unit according to Embodiment 6 is omitted.

FIG. 89 is a front view showing a configuration in which the peripheral portion of the light source unit and the light reflection sheet are omitted in Embodiment 6. FIG.

FIG. 90 is a front view showing a configuration in which a peripheral portion of a light reflection sheet according to Embodiment 6 is omitted.

FIG. 91A is a longitudinal sectional side view showing the structure of a first shaft portion in Embodiment 6. FIG.

91B is a cross-sectional plan view showing the structure of the first shaft portion in Embodiment 6. FIG.

FIG. 92A is a longitudinal sectional side view showing the structure of a second shaft portion in Embodiment 6. FIG.

92B is a cross-sectional plan view showing the structure of a second shaft portion in Embodiment 6. FIG.

FIG. 93 is a cross-sectional plan view showing the structure of a third shaft portion according to Embodiment 6. FIG.

Fig. 94 is a longitudinal sectional side view showing another structure of the first shaft portion according to the sixth embodiment.

Fig. 95 is a vertical side view showing another structure of the second shaft portion according to the sixth embodiment.

Fig. 96 is a cross-sectional plan view showing another configuration of the misalignment prevention hole portion.

Fig. 97 is a longitudinal sectional side view showing another structure of the first shaft body and the second shaft body portion.

Fig. 98 is a schematic perspective view showing another configuration of the light source device.

Fig. 99 is a front view showing another configuration of the displacement preventing portion of the light reflection sheet.

FIG. 100 is a cross-sectional view of main parts showing the configuration of a light source device according to Embodiment 7. FIG.

FIG. 101 is a plan view of a part of a light source device according to Embodiment 7. FIG.

FIG. 102 is a partially disassembled plan view of a light source device according to Embodiment 7. FIG.

Fig. 103 is a plan view of some components of a light source device according to Embodiment 7.

FIG. 104 is an enlarged plan view of a part of the light source device according to Embodiment 7. FIG.

FIG. 105 is an enlarged perspective view of a connector according to Embodiment 7. FIG.

FIG. 106 is a plan view schematically showing the structure of a connector according to Embodiment 7. FIG.

FIG. 107 is a plan view showing the dimensional relationship of an insertion hole according to Embodiment 7. FIG.

108 is a perspective view showing the structure of a lens-mounted light emitting diode substrate according to Embodiment 7. FIG.

FIG. 109 is a cross-sectional view showing an example of a fastener according to Embodiment 7. FIG.

110 is a cross-sectional view showing the configuration of a display device including a light source device according to Embodiment 7. FIG.

111A is a perspective view showing the structure of a light emitting diode substrate according to another embodiment of the seventh embodiment.

111B is a perspective view showing the structure of a light emitting diode substrate according to another embodiment of the seventh embodiment.

FIG. 112 is a cross-sectional view of main parts showing the configuration of a light source device according to Embodiment 8. FIG.

FIG. 113 is a plan view of a part of a light source device according to Embodiment 8. FIG.

FIG. 114 is a partially disassembled plan view of a light source device according to Embodiment 8. FIG.

FIG. 115 is a plan view of some components of a light source device according to Embodiment 8. FIG.

FIG. 116 is an enlarged plan view of a part of the light source device according to Embodiment 8. FIG.

117 is a perspective view showing the structure of a lens-mounted light emitting diode substrate according to Embodiment 8. FIG.

FIG. 118 is a cross-sectional view showing the structure of a rivet according to Embodiment 8. FIG.

Fig. 119 is a plan view taken along line V-V of Fig. 118 .

120 is a cross-sectional view showing the positional relationship between a rivet and a lens according to Embodiment 8. FIG.

121 is a cross-sectional view showing the configuration of a display device including a light source device according to Embodiment 8. FIG.

122 is a plan view showing the back side of the head of the rivet in another light source device according to Embodiment 8. FIG.

FIG. 123 is an enlarged plan view of a part of another light source device according to Embodiment 8. FIG.

124 is a plan view showing the back side of the head of the rivet in the second other light source device according to the eighth embodiment.

125 is a vertical cross-sectional view showing a partial configuration of a display device including the light source device according to Embodiment 9. FIG.

126 is a horizontal cross-sectional view showing the configuration of a connection portion between circuit boards included in a light source device according to Embodiment 9. FIG.

127A is a front view showing a configuration of a connection portion between circuit boards included in a light source device according to Embodiment 9. FIG.

127B is a front view showing the relationship between the circuit board and the mounting member included in the light source device according to Embodiment 9. FIG.

128 is a perspective view schematically showing a state in which circuit boards included in a light source device according to Embodiment 9 are arranged side by side.

FIG. 129 is a plan view of the lighting device according to Embodiment 10. FIG.

FIG. 130 is a plan view of the backlight chassis according to Embodiment 10. FIG.

FIG. 131 is a perspective view showing the appearance of an LED substrate according to Embodiment 10. FIG.

FIG. 132 is an enlarged cross-sectional view showing a mounting portion of the LED substrate according to Embodiment 10. FIG.

133 is an enlarged cross-sectional view showing a mounting portion of the LED substrate according to Embodiment 10. FIG.

FIG. 134 is a cross-sectional view of a liquid crystal display device according to Embodiment 10. FIG.

135 is a cross-sectional view showing another embodiment of the liquid crystal display device according to Embodiment 10. FIG.

136 is a cross-sectional view showing a partial configuration of a display device including the backlight device according to Embodiment 11. FIG.

FIG. 137 is an enlarged cross-sectional view showing part of the configuration of the backlight device according to Embodiment 11. FIG.

138 is a cross-sectional view showing the structure of a rivet in the backlight unit according to Embodiment 11. FIG.

FIG. 139 is a plan view with a part of the backlight device according to Embodiment 11 omitted.

FIG. 140 is an exploded schematic perspective view of a part of the backlight unit according to Embodiment 11. FIG.

141A is an enlarged plan view showing part of the configuration of a reflection sheet of the backlight unit according to Embodiment 11. FIG.

FIG. 141B is an enlarged plan view showing part of the structure of the reflection sheet of the backlight unit according to Embodiment 11. FIG.

FIG. 142 is a longitudinal sectional view schematically showing a display device according to Embodiment 12. FIG.

Fig. 143 is a schematic rear view of the support plate according to Embodiment 12 viewed from the rear side.

FIG. 144 is a perspective view schematically showing a through-hole opened in the vicinity of the edge of the support plate according to Embodiment 12. FIG.

Fig. 145 is a plan view schematically showing the protective tube fitted into the through hole.

Fig. 146 is a schematic cross-sectional view along line VII-VII shown in Fig. 145 .

Fig. 147 is a schematic cross-sectional view along line VIII-VIII shown in Fig. 145 .

Fig. 148 is a schematic sectional view taken along line IX-IX shown in Fig. 145 .

Fig. 149 is a plan view schematically showing the lid.

Fig. 150 is a schematic side view viewed from the direction F1 described in Fig. 149 .

Fig. 151 is a schematic side view seen from the direction F2 described in Fig. 149 .

Fig. 152 is a schematic cross-sectional view taken along line XI-XI shown in Fig. 149 .

Fig. 153 is a schematic side view viewed from the direction F3 described in Fig. 149 .

Fig. 154 is an explanatory diagram for explaining attachment of a cover to the protective tube.

Fig. 155 is an explanatory diagram for explaining attachment of a cover to the protective tube.

FIG. 156 is an explanatory diagram illustrating attachment of a cover portion to a protective tube of a display device according to Embodiment 12. FIG.

FIG. 157 is an explanatory diagram illustrating attachment of a cover portion to the protective tube of the display device according to Embodiment 12. FIG.

Fig. 158 is an enlarged perspective view schematically showing the vicinity of the engagement shaft.

Detailed ways

Hereinafter, the present invention will be described in detail based on the drawings showing embodiments of the present invention.

Fig. 1 is a schematic exploded perspective view showing the structure of the display device of the present invention, Fig. 2 is a schematic exploded perspective view showing the structure obtained by omitting the casing of the display device, Fig. 3 is a partial longitudinal sectional side view showing the structure of the display device, 4 is a schematic perspective view showing the structure of the light source device, FIG. 5 is a front view showing the structure of the light source device, FIG. 6 is a partial longitudinal sectional plan view showing the structure of the light source device, and FIG. 8 is a schematic rear view showing the structure of the light source device, FIG. 9 is a perspective view showing the structure of the light emitting diode substrate, FIG. 10 is a schematic front view showing the arrangement structure of the light emitting diode substrate, and FIG. 11 is a schematic front view showing the lens and shaft An enlarged front view of a part of the structure, FIG. 12 is a graph showing the amount of luminescence generated according to the light emitting angle of the light emitted by the light-emitting diode, FIG. 13A is an exploded cross-sectional view showing the structure of the shaft body, and FIG. 13B is a diagram showing the shaft body. An exploded perspective view of the structure, Figure 14A and Figure 14B are enlarged cross-sectional views showing the structure of the shaft part, Figure 15 is an enlarged cross-sectional view of the line XV-XV in Figure 13A, Figure 16 is a front view showing the structure of the reflector, and Figure 17 shows The developed view of the structure of the corner portion of the reflection sheet, FIG. 18 is a sectional view showing the structure of the support pin, FIG. 19 is a sectional view showing the structure of the wire holder part, and FIG. 20 is a sectional view showing the cover after the wire holder is released. 21 is a perspective view showing the structure of the lead-out hole portion of the substrate support, and FIG. 22 is a partial enlarged view showing a state where the cover of the wire holder is removed.

The display device shown in FIGS. 1 to 3 includes: a display unit A having a substantially cuboid shape on the front side having a display surface for displaying television images; a light source device B having a substantially cuboid shape disposed on the rear side of the display portion A; an optical sheet C between the light source device B and the display part A; and a case D that covers the peripheral part of the display part A and the rear side of the light source device B.

<Structure of display part A>

As shown in FIGS. 1 to 3 , the display unit A includes: a substantially rectangular parallelepiped liquid crystal display panel A1 having a display surface; and a front holding frame A2 and a rear holding frame A3 sandwiching the peripheral portion of the display panel A1 front and rear. , the front holding frame A2 and the rear holding frame A3 are combined with a plurality of male screws, thereby clamping the peripheral portion of the display panel A1 front and back. A plurality of holes for attaching the peripheral portion of the display unit A to the light source device B are opened in the non-clamping portions of the front holding frame A1 and the rear holding frame A2 of the display unit A.

<Structure of Light Source Device B>

As shown in Figures 1 to 6, the light source device B includes: a plurality of light emitting diodes B1 as light sources, which are separated and arranged side by side in a grid shape along two orthogonal directions; circuit board groups arranged in multiple columns, the circuit The substrate group includes a plurality of light-emitting diode substrates B3 arranged side by side in one direction, the light-emitting diodes B1 and the lens B2 opposite to the top of each light-emitting diode B1 are mounted on one surface of the light-emitting diode substrate B3; a plurality of connectors B4, the plurality of connectors B4 connect the adjacent light-emitting diode substrates B3 in the circuit substrate group to each other; the reflective sheet B5, the reflective sheet B5 is opposite to the one surface and the one surface of the connector B4, and diffused by the lens B2 The light is reflected; the substrate supporting body B6 supports multiple rows of circuit board groups side by side on one surface of the substrate supporting body B6; the multiple shafts B7 are used to place each light-emitting diode substrate The two ends of B3 are fixed on the substrate support body B6; a plurality of support pins B8, the plurality of support pins B8 are used to suppress the bending of the optical sheet C; the wire holder B9, the wire holder B9 will be connected with the light-emitting diode substrate The plurality of lead wires B40 connected to B3 are gathered and held in the middle; and the plurality of circuit boards B10 are arranged on the outer surface of the board support body B6.

<Structure of Substrate Support B6>

The substrate support body B6 is formed by molding a metal plate, and includes: a substantially rectangular plate-shaped plate portion B61 as shown in FIGS. 2 to 4 ; and four eaves B63 connected to the outer edge of the frame portion B62, the substrate support B6 is in the shape of a shell.

As shown in FIG. 7 , the board part B61 is provided with: a plurality of first installation holes B64, and the plurality of first installation holes B64 are used for inserting the shaft body B7 for fixing the two ends of the light emitting diode substrate B3; a plurality of second installation holes B65, the plurality of second installation holes B65 are used to install the support pin B8 or the shaft body B7 that prevents the reflector B5 from biasing away from the light-emitting diode substrate B3; a plurality of third installation holes B66, the plurality of third installation holes B66, the A plurality of the third mounting holes B66 are used to install additional parts such as the circuit board B10 on the other surface of the plate portion B61; a plurality of positioning holes B67 are used for positioning to make the substrate support body B6 shape A forming mold; a plurality of positioning convex parts B68, the plurality of positioning convex parts B68 are used to position the light-emitting diode substrate B3; the first logo B69a and the second logo B69b, the first logo B69a and the second logo B69b are convex shape, which is used to prevent wrong installation of the LED substrate B3; and the anti-rotation hole B60, which is arranged around a first installation hole B64.

The first mounting holes B64 are arranged separately in one direction, and a plurality of mounting holes B64 in one direction constitute a hole array, and the hole arrays are arranged in parallel in multiple rows. The second mounting hole B65 is opened between the two first mounting holes B64 and B64 for one LED substrate B3, and is arranged in multiple positions separated from each other, and its size is the same as that of the first mounting hole B64.

The third installation hole B66 is opened between the two installation holes B64 for one LED substrate B3 at a position opposite to the LED substrate B3, and the third installation hole B66 is blocked by the LED substrate B3. The periphery of the third mounting hole B66 is recessed toward the other surface so that the end of the shaft member fitted into the third mounting hole B66 from the other surface does not come into contact with the LED substrate B3. The positioning hole B67 is opened between the two first installation holes B64 opened for a light emitting diode substrate B3, and the positioning hole B67 and the light emitting diode substrate B3 are arranged at three places separated from each other, thereby using the light emitting diode substrate B3 Block the positioning hole B67. The positioning convex portion B68 is shaped such that a protrusion is formed on a part of the one surface side at a position facing the peripheral portion of each light emitting diode substrate B3. The diameter of the anti-rotation hole B60 is smaller than that of the first mounting hole B64, and the anti-rotation hole B60 is formed at a position slightly separated from the first mounting hole B64 disposed in the center of the plate portion B61.

On one surface of the plate portion B61, a plurality of rows of circuit board groups are accommodated and supported. As shown in FIG. The power circuit board B10a to which one LED board B3 in the board group is connected is mounted with a control circuit board B10b for driving and controlling the display unit A on the other side in the longitudinal direction.

As shown in Figure 8, a lead-out hole B61a is opened on one side of the length direction of the board part B61, and the lead-out hole B61a is used to lead out the wires B40 of each second connector B41 to the other side of the board part B61. On one side, the lead wire holder B9 is attached to the outer side of the lead-out hole B61a. As shown in FIG. 21 , a plurality of concave portions B61b are provided on the inner edge of the outlet hole B61a, and a recessed locking portion B61c is provided around the outlet hole B61a.

The signal processing circuit board B10c is mounted on the lower side of the central part in the longitudinal direction of the other surface of the board part B61, and processes the video signal displayed on the display surface of the display part A. In addition, it has a structure in which mounting holes corresponding to the above-mentioned holes of the display part A are opened at a plurality of circumferential positions of the eaves B63, and the display part A and the substrate support are connected by male screws. B6 combined.

<Structure of Light Emitting Diode Substrate B3>

As shown in Figure 9, the light-emitting diode substrate B3 is rectangular, with a circuit portion on one surface, on which the light-emitting diode B1 and the lens B2 are installed, and on one surface of one end, a convex or concave lens is provided. The connection part B31 has a concave or convex connection part B32 on one surface of the other end. The light-emitting diode substrate B3 adopts the following structure: that is, through-holes B33 and B34 corresponding to the first mounting hole B64 are opened on both ends, and two holes corresponding to the first mounting hole B64 are opened at two positions between the through-holes B33 and B34. The positioning recess B35 corresponding to the positioning convex part B68 is provided with an embedding hole B36 corresponding to the second mounting hole B65 between the positioning recesses B35 and B35, and an embedding hole B36 corresponding to the second mounting hole B65 is provided on one end of the length direction. The concave first mark B37 corresponding to B69a can prevent the light-emitting diode substrate B3 with different connecting portion structures at both ends from being arranged in the wrong direction. The concave second mark B38 corresponding to the second mark B69b can prevent misconfiguration of the two kinds of light emitting diode substrates B3 (first substrate, second substrate) described later. A positioning recess B35 is provided at a position opposite to the anti-rotation hole B60. As shown in FIG. 10 , a plurality of LED substrates B3 having the same length or different lengths are arranged side by side in one direction, thereby forming a circuit substrate group. For example, as shown in FIG. 5 and FIG. 10, the following structure is adopted: that is, from a short light-emitting diode substrate with five light-emitting diodes B1 mounted at equal intervals, to a medium-length light-emitting diode substrate with six light-emitting diodes B1 mounted at equal intervals. Select any one of the light-emitting diode substrates B3 from the medium light-emitting diode substrate and the long light-emitting diode substrate with 7 or 8 light-emitting diodes B1 installed at equal intervals, and combine them in one direction, so that Circuit board groups having different lengths are formed.

Because the brightness deviation of the light emitting diode B1 is relatively large, the circuit substrate group adopts a structure in which the high brightness light emitting diode B1 and the low brightness light emitting diode B1 are arranged side by side to reduce the uneven brightness. The light emitting diode substrate B3 includes high brightness, The first substrate of the light-emitting diode B1 is arranged in the order of low brightness and the second substrate of the light-emitting diode B1 is arranged in the order of low brightness and high brightness. can be identified.

The size of the through-hole B33 opened on one end of the LED substrate B3 is formed smaller than the through-hole B34 opened on the other end, so that the gap between the small-sized through-hole B33 and the shaft body B7 embedded therein is extremely small. The gap between the small and large-sized through-hole B34 and the shaft body B7 embedded therein is large, so that the side of the large-sized through-hole B34 can be centered on the shaft body B7 embedded in the small-sized through-hole B33 in the width direction. The movement is performed to prevent an overload from being applied to the connector B4 connecting the ends of the light emitting diode substrates B3 arranged side by side in the column direction to each other.

The size between the positioning recesses B35 and B35 arranged on two positions of a light-emitting diode substrate B3 varies according to the length of the light-emitting diode substrate B3. The size is the small size. For the medium LED substrate B3, the dimension between the positioning recesses B35 and B35 is the medium size. For the long LED substrate B3, the dimension between the positioning recesses B35 and B35 is the long dimension. To prevent errors in the configuration of LED substrates B3 with different lengths.

The first mark B37 is formed by cutting a part of one end in the longitudinal direction into a concave shape, and the first mark B69a is arranged in the mark B37. A mark B69a is covered by the light emitting diode substrate B3 and cannot be identified, so that it can be confirmed that the arrangement direction of the light emitting diode substrate B3 is wrong. The second mark B38 is formed by cutting one end in the length direction and both sides in the width direction into a concave shape, and the second mark B69b is arranged in the mark B38. When the first substrate and the second substrate of the light-emitting diode substrate B3 are arranged incorrectly, The second mark B69b is hidden by the light emitting diode substrate B3 and cannot be recognized, so that it can be confirmed that the type of the light emitting diode substrate B3 is wrong.

<structure of lens B2>

As shown in Fig. 6 and Fig. 11, the lens B2 is separated from the top of the light-emitting diode B1 and faces it, and has a thick disc-shaped light-transmitting part B21 and three protrusions B22, and the light-transmitting part B21 has a function for making the light-emitting diode B1 emit light. The light emitted by the diode B1 diffuses around the hemispherical concave portion, the protrusion B22 protrudes from the light-transmitting portion B21 facing the light-emitting diode substrate B3 opposite to the light-emitting diode B1, and the front end of the protrusion B22 is mounted on the light-emitting diode substrate B3 with an adhesive. Around the light emitting diode B1 on one surface of the light emitting diode substrate B3. FIG. 12 shows the amount of light emitted by the light emitting diode according to the light emission angle. The measurement position of the amount of light emission is a position separated from the light emitting diode B1 by 20 mm. It can be seen from FIG. 12 that there is no amount of light emission at a light emission angle of 70 degrees or more with respect to the light emission angle zero (vertex of the light emitting diode B1).

<Structure of Shaft Body B7>

The shaft body B7 that is fitted into the first mounting hole B64 to fix both ends of the LED substrate B3 and the shaft body B7 that is fitted into the second mounting hole B65 to prevent the reflection sheet B5 from being deflected in a direction away from the LED substrate B3 are Common. Since the through-holes B33 and B34 are provided at both ends of the light-emitting diode substrate B3, the shaft body B7 is fitted into the first mounting hole B64 from the through-holes B33 and B3 at the two ends. Even in the structure in which a plurality of LED boards B3 are arranged side by side as shown in FIG. 10 , both ends of the LED board B3 can be reliably fixed without forgetting to insert the shaft body B7 or inserting the shaft body B7 . As shown in FIGS. 13A, 13B, 14A, and 14B, the shaft body B7 has a synthetic resin flexible tube B71 and a synthetic resin pin B72 fitted into the flexible tube B71. One end of the flexible tube B71 has a head B71a with a smaller diameter, and the other end has a plurality of cutouts B71b along the axial length direction and a bulge protruding inward, and the component pieces between the cutouts B71b can be bent radially , insert the flexible tube B71 into the through hole B33 or B34 and the first mounting hole B64, make the head B71a contact with one surface of the LED substrate B3, and press the LED substrate B3 to the plate portion B61.

The pin B72 is opposite to the head B71a of the flexible cylinder B71 along the axial length direction, and one end has a head B72a whose diameter is larger than the head B71a. The pin B72 is embedded in the flexible cylinder B71, so that the flexible cylinder The component piece between the notch B71b of B71 is bent radially outward outside the mounting hole B64 so as not to be pulled out from the mounting hole B64. A space whose size is longer than the thickness of the reflective sheet B5 will be generated, so that when the heat generated by the light-emitting diode B1 causes thermal expansion of the reflective sheet B5, the reflective sheet B5 is allowed to expand and contract due to the thermal expansion, so as to prevent the reflective sheet B5 from generating heat. folds. As shown in FIG. 14A and FIG. 14B , there are pins B72 whose head B72a is circular and pins B72 whose head B72a is oblong. On the pin B72 having an oblong head B72a, on one side in the longitudinal direction of the head B72a, a detent pin B73 embedded in the detent hole B60 and a positioning recess B35 is integrally formed.

As shown in FIG. 6, the shaft body B7 adopts a structure in which the dimension from one surface of the LED substrate B3 to the tip of the head B72a is formed to be larger than the dimension from one surface of the LED substrate B3 to the tip of the lens B2. The length should be short so as to reduce the interference of light diffused by the lens B2 with the head B72a of the shaft B7 and prevent uneven brightness caused by the shaft B7.

As shown in FIG. 15, on the inner surface of the head B72a opposite to one surface of the light-emitting diode substrate B3, a plurality of recesses B74 are provided. The perimeter is open. The concave portion B74 creates a space between the concave portion B74 and one surface of the LED substrate B3 for inserting the tip of a tool such as a flathead screwdriver, so that the pin B72 can be easily pulled out with the tool. The concave portion B74 is provided in three equal parts as shown in FIG. 13B , but other than that, it may be provided in four equal parts, or may be one or two, and the number is not particularly limited.

<Structure of reflective sheet B5>

A synthetic resin sheet material with high reflectivity is shaped to form a reflective sheet B5, as shown in Figure 5 and Figure 16, the reflective sheet B5 includes a substantially quadrilateral flat portion B51, and formed on the flat portion B51. When the frame portion B52 bent at the first folding line B5a on the periphery of the B51 is bent at the first folding line B5a, the reflection sheet B5 is formed into a casing shape.

A first hole B53, a second hole B54, and a third hole B55 are opened on the flat part B51. The first hole B53 is arranged in a grid shape, and the inside thereof is used for disposing each lens B2. The second hole B54 The shaft body B7 for fixing the light-emitting diode substrate B3 is embedded in the third hole B55, and the supporting pin B8 or the shaft body B7 for preventing the reflection sheet B5 from biasing away from the light-emitting diode substrate B3 is embedded in the third hole B55. A pair of slits B56 are formed at the portion facing each connector B4. The paired slits B56 are separated in the direction along the sheet surface and face each other in parallel. When the multi-piece light-emitting diode substrate B3 is used, the part between the pair of cutouts B56 is biased in the thickness direction, so that the reflection sheet can also be used for light reflection on the part opposite to the connector B4. In addition, as shown in FIG. 16 , a long hole B57 is provided, the long hole B57 is connected to a second hole B54 on the central side, and is opposite to the anti-rotation hole B60 through a positioning recess B35.

As shown in Figure 17, between the corner B51a of the flat part B51 and the periphery of the corner B52a of the frame part B52, there are three third wires extending from the corner B51a of the flat part B51 to the periphery of the corner B52a of the frame part B52. By bending the second folding line B5b at the second folding line B5b, gaps and steps are not generated at the corners B52a of the frame portion B52.

As shown in Figure 11, the diameter of the first hole B53 is formed slightly larger than the light-transmitting portion B21 of the lens B2, and the light-transmitting portion B21 is arranged on the side of the flat portion B51 close to the optical sheet C, and on the reflective sheet B5 When thermal expansion occurs due to the light emitted by the light-emitting diode B1, the reflective sheet B5 is allowed to expand and contract in the gap between the peripheral surface of the light-transmitting portion B21 and the first hole B53 due to the thermal expansion. The second hole B54 has the following structure: that is, it is smaller than the first hole B53 and larger than the head portion B72a, and is connected to one side of the adjacent first hole B53, thereby absorbing the thermal expansion caused by the reflection sheet B5. caused stretching. In addition, one second hole B54 on the center side, that is, the second hole B54 connected to the elongated hole B57 is separated from the first hole B53.

The third hole B55 is formed smaller than the second hole B54 and the head B71a of the flexible cylinder B71. Around the third hole B55 into which the support pin B8 is fitted, a micro-hole identification part B55a is provided, but the third hole B55 into which the axis B7 for preventing the deflection of the reflective sheet B5 from the direction away from the light-emitting diode substrate B3 is fitted. around, the identification part B55a is not provided. The identification part B55a is arranged at a position larger in diameter than the head B72a of the shaft body B7, and when the shaft body B7 is mistaken for the support pin B8 and inserted into the third hole B55, the identification part B55a will be exposed, and it will be known that an error has occurred. .

As shown in FIG. 16, the slits B56 are separated along the direction in which the circuit board groups arranged side by side in a plurality of columns (direction perpendicular to the columns) are arranged, and the opposite directions are changed alternately so that the two ends of the slits B56 and B56 are not separated. The starting point of the notch portion is offset in the thickness direction, so that the offset portion is opposed to each connector B4. In this structure, the reflective sheet B5 having high reflectivity on the portion opposed to each connector B4 deviates from the non-cut portion between the two ends of the cutout B56, B56, so that the The inclination from the apex of the offset portion to the non-notch portion with respect to the flat portion B51. Thereby, as shown in FIG. 4, even when the number of connectors B4 arranged side by side is large, the inclination can be reduced by using the deviation of the portion facing each connector B4, thereby improving the edge and the edge. Light reflectivity in the direction perpendicular to the material surface can further ensure appropriate brightness characteristics.

As shown in Figure 14B, a second hole B54 on the central side connected to the long hole B57 adopts the following structure: that is, its diameter is smaller than the flexible tube B71, and only a second hole of the reflective sheet B5 is closed with the head B71a. The periphery of B54 presses against one surface of the light-emitting diode substrate B3, so that the reflection sheet B5 can be positioned regardless of whether the reflection sheet B5 expands or contracts due to thermal expansion of the reflection sheet B5. The long hole B57 serving as a displacement preventing hole has substantially the same width as the detent pin B73, is a long hole in a direction separated from the one second hole B54 on the central side, and is in contact with the peripheral surface of the detent pin B73. , so as to prevent the misalignment of the reflection sheet B5 along the circumferential direction, so as to maintain the positional relationship between the first hole B53 and the lens B2.

<Structure of support pin>

As shown in FIG. 18 , the support pin B8 includes a synthetic resin flexible tube B81 , a synthetic resin pin B82 fitted into the flexible tube B81 , and a cylindrical portion B83 integrally formed with the pin B82 . One end of the flexible cylinder B81 has a head B81a with a smaller diameter, and the other end has a plurality of cutouts B81b along the axial length direction and a bulge protruding inward, and the component pieces between the cutouts B81b can be bent radially , insert the flexible tube B81 into the third hole B55 and the second mounting hole B65, make the head B81a contact with one surface of the LED substrate B3, and press the LED substrate B3 to the plate part B61.

The pin B82 is opposite to the head B81a of the flexible cylinder B81 along the axial length direction, and one end has a head B82a whose diameter is larger than the head B81a and the head B72a of the shaft body B7, and the pin B82 is inserted into the flexible cylinder In B81, the component pieces between the cutouts B81b of the flexible tube B81 are bent outward in the radial direction on the outside of the second mounting hole B65 so as not to be pulled out from the mounting hole B65, and the inner surface of the peripheral portion of the head B82a is connected to the light emitting diode. Between one surface of the diode substrate B3, there is a space longer than the thickness of the reflection sheet B5, so that when the light emitted by the light-emitting diode B1 causes the reflection sheet B5 to thermally expand, the reflection sheet B5 is allowed to expand and contract due to the thermal expansion. , to prevent the reflection sheet B5 from wrinkling. The columnar portion B83 has a substantially tapered shape from the head portion B82a, and its tip is slightly separated from the optical sheet C so as to prevent the optical sheet C from bending toward the LED board B3. The head B82a adopts the following structure: that is, it is formed into a size that covers the identification portion B55a of the reflective sheet B5 when the support pin B8 is inserted into the third hole B55, so that when the shaft body B7 is inserted into the third hole B55 by mistake, the identification portion B55a will be exposed to the outside of the head B82a.

<Structure of lead wire holder>

As shown in Fig. 19, Fig. 20, and Fig. 22, the wire holder B9 is fitted and installed around the outlet hole B61a, and includes a roughly quadrangular protective tube B91 and a cover B92 that closes the open end of the protective tube B91. . Inside the protection tube B91 is provided a concave portion B91a which is arranged parallel to the plate portion B61 and connected to the lead-out hole B61a so as to accommodate the lead wire B40 drawn out from the lead-out hole B61a. One side open end of the protection tube B91 is provided with a convex engaged part B91b. The engaged part B91b is inserted into the concave part B61b, and is engaged with the edge of the outlet hole B61a by sliding. One side of the protection tube B91 One side is provided with a pivot supporting convex part B91c, and the other side of the protection tube B91 is provided with a clamped part B91d that is clamped to the clamping part B61c. Using the clamped part B91b and the clamped part B91d, the protection tube B91 Install around the outlet hole B61a. The other side opening of the protection tube B91 is provided with a plurality of concave locking parts B91e.

The cover body B92 is plate-shaped, and one side of its peripheral part is provided with a clamped part B92a clamped by the pivotal support convex part B91c, and the other side is provided with a convex clamped part B91e clamped by the locking part B91e. Fixed part B92b, when the cover body B92 rotates in the closing direction with the clamped part B92a as a fulcrum to close the open end of the protection tube B91, the wire B40 gathered in the concave part B91a is clamped in the concave part of the protection tube B91 Between B91a and cover B92. Thus, as shown in FIG. 2 , the wire B40 of the connector B2 connected to the circuit board group can be gathered and held in the concave portion B91a in a short time, so that the wire B40 can be easily routed.

<Structure of Optical Sheet C>

The optical sheet C is a laminate formed by laminating a thicker diffuser plate and a thinner synthetic resin sheet. The thicker diffuser plate diffuses the light emitted by the light-emitting diode B1 as a light source, and the thinner diffuser plate The synthetic resin sheet includes a reflective polarizing plate, a prism sheet, a diffusion sheet, and the like, and the peripheral portion of the optical sheet C is supported by the edge piece B63 of the substrate support body B6.

<Structure of Case D>

The case D has a case front split body D1 that covers the front side of the peripheral part of the display part A, and a deep dish-shaped rear part body D2 that covers the peripheral part and the rear side of the light source device B, and the case is fastened by male screws. D is attached to the eaves B63 of the board|substrate support body B6.

The display device having the above structure is assembled by the following steps (1) to (8).

(1) Place the display panel A1 on the rear holding frame A3 placed flat on the console, place the front holding frame A2 on the display panel A1, and use male screws to connect the front holding frame A2 and Then, the display unit A is formed by combining the holding frame A3.

(2) Place the substrate support B6 without the circuit substrate B10 flat on another console, with the open side facing up, on one surface of the plate B61 of the substrate support B6, as shown in Figure 7 In this way, a plurality of rows of light-emitting diode substrates B3 adjacent in one direction are arranged side by side. At this time, for the adjacent LED boards B3 in one direction, for example, short LED boards with 5 LEDs B1 mounted in multiple rows are arranged side by side, and then medium LED boards with 6 LEDs B1 mounted in multiple rows are arranged side by side. , and then a plurality of rows of short light-emitting diode substrates mounted with five light-emitting diodes B1 are arranged side by side to form a circuit substrate group. The short LED substrates arranged side by side first are connected to the second connector B41 in advance, the middle LED substrates are connected to the connector B4, and the short LED substrates arranged side by side last are connected to the short-circuit connector.

Since the positioning convex part B68, the first mark B69a, and the second mark B69b are provided on the plate part B61, and the positioning recess B35, the first mark 37, and the second mark 38 are set on the light-emitting diode substrate B3, therefore, When forming the circuit board group, the positioning recess B35 of the LED board B3 is engaged with the positioning protrusion B68, so that the LED boards B3 with different lengths can be conveniently arranged side by side at an appropriate position. A mark 37 is matched with the first mark B69a, and the second mark 38 is matched with the second mark B69b, so that the light-emitting diodes B1 with different connection structures at both ends and with high brightness and low brightness can be arranged side by side. The light emitting diode substrates B3 with different orders are arranged side by side at appropriate positions. When the light-emitting diode boards connected with the second connector B41 are arranged side by side, the wire B40 of the second connector B41 is led out from the lead-out hole B61a to the outside of the board support B6.

(3) Both ends of the light emitting diode board B3 arranged side by side in the board support body B6 are fixed to the plate part B61 by the shaft body B7. At this time, the shaft body B7 is sequentially inserted through the through holes B33 and B34 opened at both ends of each LED substrate B3, and the shaft body B7 is inserted into the mounting hole B64 of the plate part B61, thereby fixing each LED substrate B3. on the substrate support B6. At this time, after the shaft body B7 is fitted into the through hole B33 opened at one end of the LED substrate B3, the shaft body B7 is fitted into the through hole B34 opened at the other end of the LED board B3. Since the through hole B33 that is inserted into the shaft body B7 first is smaller than the through hole B34 that is inserted into the shaft body B7 later, even if the position of the through hole B34 opened at the other end is slightly shifted relative to the mounting hole B64 Also, the light-emitting diode substrate B3 can be fixed by absorbing this positional shift, and an overload can be prevented from being applied to the connector B4. In addition, the shaft body B7 is fitted into one mounting hole B64 on the center side for fitting the shaft body B7 having the locking pin B73 by the following process.

(4) The reflective sheet B5 is placed on one surface of the light-emitting diode substrate B3 fixed on the plate portion B61 of the substrate support body B6, and the peripheral portion of the reflective sheet B5 is placed on the cornice B63 of the substrate support body B6. superior. At this time, the lens B2 is disposed in the first hole B53 of the reflection sheet B5.

(5) Either one of the support pin B8 and the shaft body B7 used to prevent the deflection of the reflection sheet B5 from the direction of separation from the light-emitting diode substrate B3 is sequentially inserted through the third hole B55 of the reflection sheet B5, and the support pin B8 Or the shaft body B7 is fitted into the insertion hole B36 and the second mounting hole B65. At this time, since the diameter of the head portion B72a of the shaft body B7 is larger than the third hole B55, the inner surface of the head portion B72a is opposite to the periphery of the third hole B55 of the reflection sheet B5. The separation direction of the LED substrate B3 is biased.

Insert the flexible cylinder B71 of the shaft body B7 with the detent pin B73 into a second hole B54 on the central side of the reflection sheet B5, embed the detent pin B73 into the long hole B57, a positioning recess B35, and the detent hole In B60, it is possible to prevent the misalignment of the reflective sheet B5 in the circumferential direction.

(6) The optical sheet C is placed on the peripheral portion of the reflective sheet B5 placed on the cornice B63 of the substrate support B6, and the display part A is placed on the optical sheet C. The male screw is inserted through the insertion hole provided on the peripheral portion of the display portion A, and the male screw is screwed into the installation hole provided on the eaves B63, thereby clamping the optical sheet C between the display portion A and the display portion A. between the substrate supports B6 to fix the display unit A on the substrate supports B6. In this case, the optical sheet C can be suppressed from bending by the support pin B8.

(7) Reverse on the console, make the display part A face down, and make the substrate support body B6 face up, install a plurality of circuit boards B10 in the third mounting hole B66 of the board part B61, and use the wire holder B9 The lead wire B40 of the second connector B41 is gathered and held.

(8) Place the display part A and the substrate support body B6 on the front split body D1 of the housing flatly placed on the console, with the display part A facing down and the substrate support body B6 facing up, and the rear split body D2 of the case Mounted on the substrate support B6, the peripheral side of the rear sub-body D2 of the case, the cornice B63 of the substrate support B6, and the peripheral side of the front sub-body D1 of the case are combined with male screws to form a display device.

<Other configurations of the display device>

Fig. 23 is a developed view showing other structures of the corners of the reflection sheet, Fig. 24 is a front view showing other structures of the connector-facing portion of the reflection sheet, Fig. 25 is a front view showing other structures of the light source device, and Fig. 26 is 27 is a schematic front view showing another structure of the reflection sheet, and FIG. 28 is a cross-sectional view showing another relationship between the reflection sheet and the shaft.

<Other structures of reflective sheet B5>

As shown in Figure 23, the following structure can also be adopted: that is, a substantially V-shaped cutout portion B58 is provided at the corner portion B52a of the frame portion B52 of the reflective sheet B5, and the flat portion B51 is aligned with the flat portion B51 at the first folding line B5a. After the four frame parts B52 connected at four sides are bent into an oblique shape relative to the flat part B51, the two edge parts B58a and B58a of the cut-out part B58 are joined together, and the joining tools such as double-sided adhesive tape are used to maintain the joint. together state.

As shown in Figure 24, the following structure can also be adopted: that is, two substantially U-shaped cutouts B59 are opened on the part of the reflection sheet B5 opposite to the connector B4, and two offset starting points between the cutouts B59 and B59 As the starting point, the reflective sheet B5 is biased parallel to the sheet surface to improve the bias of the part opposite to the connector B4 in the thickness direction, and the cut B59 is separated from the direction along the sheet surface. A side and two short sides extending from both ends of the long side toward the side where the separation distance becomes shorter.

<Other relationships between shaft body B7 and reflector B5>

Since the light reflectivity of the shaft body B7 that fixes the two ends of the light emitting diode substrate B3 is worse than that of the reflective sheet B5, as shown in FIG. The shafts B7 for fixing the part are arranged in a zigzag shape along the direction perpendicular to the row direction, and the shafts B7 for fixing the other end of the light emitting diode substrate B3 are arranged in a zigzag shape along the direction perpendicular to the row direction, The location where the brightness unevenness caused by the shaft body B7 occurs is diffused to make it inconspicuous.

In this case, as shown in FIG. 26 , the first mounting holes B64 and the positioning protrusions B68 adjacent to each other in the direction perpendicular to the column direction of the light emitting diode substrate B3 are arranged to be offset from each other along the column direction. wrong shape. The light emitting diode substrate B3 includes a first light emitting diode substrate having a shorter dimension from both ends to the through holes B33, B34, and a second light emitting diode substrate having a longer dimension from both ends to the through holes B33, B34. The light-emitting diode substrate and the second light-emitting diode substrate are arranged alternately along the direction perpendicular to the column direction, so that the through-holes B33 and B34 are arranged in a zigzag shape corresponding to the first mounting holes B64 arranged in a zigzag shape, and then the through-holes are embedded The shafts B7 of B33 and B34 are arranged in a zigzag shape along the direction perpendicular to the column direction.

The long hole B57 used to prevent the misalignment of the reflection sheet B5 in the circumferential direction can also be arranged on the reflection sheet as shown in FIG. One second hole B54 on the peripheral side of B5 serves as a long hole B57. In this case, the elongated hole B57 has a width substantially the same as that of the head B71a of the shaft body B7, is a long hole in a direction separated from a second hole B54 disposed on the central side, and is separated from the head B71a. The peripheral surface of the portion B71a is in contact with each other so as to prevent the misalignment of the reflective sheet B5 in the circumferential direction. In addition, in the second hole B54 disposed on the central side of the reflective sheet B5, a shaft body B7 having a circular head B72a is inserted instead of having a circular head B72a. Pin B72 with oblong head B72a. In addition, the elongated hole B57 may adopt a structure separated from the first hole B53 in addition to being connected to the first hole B53 of the reflection sheet B5 as shown in FIG. 28 .

Hereinafter, Embodiment 1-1 to Embodiment 12-2 of the present invention will be described in detail based on the drawings. In addition, for the components corresponding to the components shown in Figures 1 to 28, the reference numerals attached to the components shown in Figures 1 to 28 are appended in parentheses to clarify that they are different from those shown in Figures 1 to 28. The parts shown are the same.

Embodiment 1-1

29 is a perspective view showing the structure of the light source device according to the present invention, FIG. 30 is a plan view showing the structure of the light source device, FIG. 31 is a plan view showing the structure obtained by omitting the reflection sheet of the light source device, and FIG. 32 is This is an enlarged cross-sectional view showing a part of the structure of the light source device.

The illustrated light source device (B) is installed on the rear side of the display unit in the thin display device provided with the display unit (A). (B) includes: a plurality of light emitting diodes 1 (B1), which are arranged side by side in a grid shape as light sources; a plurality of light emitting diode substrates 2 (B3), and the plurality of light emitting diode substrates 2 (B3) arranged side by side in multiple rows, the light emitting diode 1 is installed on one surface 2a; a plurality of connectors 3 (B4), the plurality of connectors 3 (B4) connect the adjacent light emitting diode substrates 2, 2 Connected to each other; a plurality of lenses 4 (B2), the plurality of lenses 4 (B2) are installed on one surface 2a of the light emitting diode substrate 2, opposite to the top of the light emitting diode 1, so that the light emitted by the light emitting diode 1 is scattered A reflection sheet 5 (B5), which has a through hole 5a (first hole B53) for disposing the lens 4 inside, and is opposite to the one surface 2a and the one surface of the connector 3 , to reflect the light diffused by the lens 4; and a support case 6 (substrate support body B6) for accommodating and supporting a plurality of rows of light emitting diode substrates 2 side by side.

The LED substrate 2 has a rectangular shape with a circuit portion on one surface 2a. On one surface 6a of the substantially rectangular support case 6, a plurality of rows of the LED substrates 2 are arranged side by side separately in the longitudinal direction and the width direction. As shown in FIG. 31, on each surface 2a of the light-emitting diode substrate 2, a plurality of light-emitting diodes 1 are mounted separately along the longitudinal direction, and connecting portions 21, 22 are provided at both ends of the surface 2a in the longitudinal direction (B31 , B32).

The light-emitting diode substrates 2 are arranged side by side in multiple rows so that one end in the longitudinal direction faces each other. Connect to each other, use the second connector (B41) to connect the connection part 22 of one LED substrate 2 with the power circuit substrate installed on the rear surface of the support case 6, connect the connection part 22 of the other LED substrate 2 Connect with shorting connector.

The supporting case 6 is formed by forming a metal plate, and has a substantially rectangular flat plate portion 61 (B61) and a frame portion 62 (B62) connected to the periphery of the plate portion 61 and open at the front side. On the front surface 6 a of the portion 61 , the light emitting diode substrates 2 are accommodated and supported in parallel in the longitudinal direction and the width direction. The frame part 62 is formed by bending the frame piece connected to the four sides of the plate part 61 .

On the rear surface of the board part 61, a plurality of circuits such as a power circuit board connected to the connection part 22 of the light-emitting diode board 2 through a second connector, and a control circuit board for driving and controlling the display part are mounted. Substrate (B10).

33 is a plan view showing the structure of the reflection sheet, FIG. 34 is an enlarged front view showing the structure of the main part of the reflection sheet when it is unfolded, FIG. 35 is an enlarged front view showing the structure of the main part of the reflection sheet, and FIG. An enlarged cross-sectional top view of the structure of the sheet part. The reflection sheet 5 (B5) is formed by a piece of highly reflective and rectangular synthetic resin sheet material, including: a flat portion 51 (B51) smaller than the plate portion 61 of the support case 6; The frame body portion 52 (B52) that is connected to the entire periphery of the flat portion 51 at the folding line 5b (B5a) and can be bent is formed between each corner portion 51a (B51a) of the flat portion 51 and the corner portion 52a of the frame body portion 52. (B52a) Between the periphery, be provided with the second folding line 53 (B5b) as perforation line, be bent at the first folding line 5b and the second folding line 53 places, thereby form frame body part 52 relative to flat part 51 to The outer side is sloped and the front side is open in the shape of the case. Furthermore, the first folding line 5b and the second folding line 53 are perforation lines.

There are three second folding lines 53, extending from the corner 51a of the flat portion 51 to the periphery of the corner 52a of the frame portion 52, the central folding line 53a is folded into a depression, and the folding lines 53b, 53b on both sides are folded into protrusions, thereby The folding lines 53b, 53b on both sides are joined together without a step difference in the thickness direction. On the outer peripheral portion of the corner portion 52a of the frame portion 52, a cutout portion 54 cut into a substantially L-shape is provided.

The two bent parts 53c, 53c bent at the three fold lines 53a, 53a, 53b overlap to form a plate shape, and the bent parts 53c, 53c are combined with an adhesive tape 55 such as double-sided tape to maintain The bent state of the frame portion 52 , in other words, the shape of the frame portion 52 can be maintained.

In the portion of the flat portion 51 facing the outer peripheral portion of the connector 3, a biasing portion is provided, which can be biased in the thickness direction by a plurality of cutouts that are separated and opposed in the direction along the sheet surface. A through-hole 5a (first hole B53) having a diameter slightly larger than that of the lens 4 is opened at a portion of the portion 51 corresponding to the lens 4, and the lens 4 is disposed inside the through-hole 5a.

In addition, four eaves 56 are integrally provided with the reflective sheet 5. The four eaves 56 are connected to the four sides of the rectangular frame portion 52 at the third folding line 5c, and extend parallel to the flat portion 51 toward the other side. Extend outside.

The two eaves 56, 56 facing each other in the longitudinal direction of the reflection sheet 5 have protruding portions 56a protruding from both ends of the eaves 56, 56 in the longitudinal direction of the eaves 56, 56 more than the cutout 54. When the three second folding lines 53 bring the corners 52a together, one side edge of the protruding portion 56a abuts with the two end edges of the remaining two eaves 56, 56, so that the gap between the two ends of each eaves 56 No gaps are created.

As shown in FIG. 31 , for example, 5 or 6 light emitting diodes 1 are installed separately along the length direction of the light emitting diode substrate 2 , and 5 or 6 lenses 4 corresponding to the light emitting diodes 1 are installed on the substrate with an adhesive. on one side 2a.

The lens 4 (B2) includes a light-transmitting part (B21) and three positioning protrusions (B22). The hemispherical concave part where the light diffuses to the surroundings, and the positioning protrusion (B22) protrudes from the light-transmitting part facing the light-emitting diode substrate 2 opposite to one surface 2a, and positions the light-transmitting part relative to the light-emitting diode substrate 2 , The front end of the positioning protrusion is attached to one surface 2a with an adhesive. The positioning protrusions are set so that the distance between the light-transmitting portion and the LED substrate 2 is slightly longer than the thickness of the reflective sheet 5 , so as to absorb the thermal expansion of the reflective sheet 5 .

With regard to the light source device having the above-mentioned structure, the support case 6 is placed on the console with the open side facing upward, and on the front surface of the plate portion 61 of the support case 6, a plurality of rows are arranged side by side. The two adjacent light-emitting diode substrates 2, 2 are connected with the connector 3 and the connecting portion 21, 21 arranged on the adjacent end of each row of light-emitting diode substrates 2, 2, and the reflective sheet 5 is placed on one surface 2a of the light-emitting diode substrate 2 of each row so that they face each other. Since the reflector 5 is in the shape of a case with an open front side, the flat portion 51 is opposed to one surface 2a of the LED substrate 2 and the plate portion 61 of the support case 6, and the frame portion 52 is opposed to the frame portion of the support case 6. 62, the entire surface inside the support housing 6 is a reflective surface.

Since the flat portion 51 and the frame portion 52 of the reflection sheet 5 are formed by bending a piece of synthetic resin sheet material at the first folding line 5b and the second folding line 53, it is easy to obtain the shape of the housing. The reflection sheet 5 does not form a gap, and even if dust enters the support case 6 , it is possible to prevent the dust in the support case 6 from entering the inside of the reflection sheet 5 . In addition, since the corners 52a of the frame portion 52 of the housing-shaped reflective sheet 5 are joined together at the three second folding lines 53, no step difference occurs in the thickness direction, so that the frame portion can be improved. The luminance characteristics of the corner 52a of the frame 52 can prevent the corner 52a of the frame part 52 from producing shadows. In addition, since the outer edge portion of the corner portion 52a of the frame portion 52 is provided with the cutout portion 54 cut into a substantially L-shape, the outer edge of the corner portion 52a that is joined by the second folding line 53 can be prevented from Some protrude outwards.

37 is a cross-sectional view showing the structure of a display device including the light source device according to the present invention. The display device includes: a display part 70 (A), which is approximately rectangular parallelepiped and has a display surface for displaying television images on its front side; a light source device A (B), which is arranged on The rear side of the display unit 70 ; and a housing 71 (D) that covers the peripheral portion of the display unit 70 and the rear side of the light source device A.

The display unit 70 (A) includes a display panel 72 (A1) having a display surface, and an optical sheet 73 (C) arranged behind the display panel 72 . The peripheral portion of the display panel 72 is sandwiched front and rear by the front support frame 74 (A2) and the rear support frame 75 (A3) to form a panel assembly, and the rear support frame 75 is installed on the periphery of the support case 6. department.

The optical sheet 73 is a laminate formed by laminating a thicker diffuser plate for diffusing light emitted from the light emitting diode 1 as a light source and a thinner synthetic resin sheet. Typical synthetic resin sheets include reflective polarizers, prism sheets, and diffusion sheets.

The supporting case 6 has a plate portion 61 and a frame portion 62 connected to the periphery of the plate portion 61 , and supports the peripheral portion of the diffusion plate on the frame portion 62 .

The casing 71 has a casing front split body 71a (D1) that covers the front side of the peripheral portion of the display unit 70, and a deep dish-shaped casing rear split body 71b (D2) that covers the peripheral portion and the rear side of the light source device A. The housing 71 is attached to the frame portion 62 of the support case 6 by male screws.

Embodiment 1-2

38 is a developed front view showing another configuration of a main part of the reflection sheet included in the light source device according to the present invention. This light source device adopts the following structure: that is, a substantially V-shaped cutout portion 57 is provided at the corner 52a of the frame portion 52 instead of providing three second strips at the corner of the frame portion 52 of the reflection sheet 5 (B5). The folding line 53 bends the four frame parts 52 connected to the four sides of the flat part 51 obliquely with respect to the flat part 51 at the first folding line 5b, and the two edge parts 57a, 57a of the cutout part 57 Together, and utilize double-sided adhesive tape 55 to keep this combined state.

The reflection sheet 5 formed of a rectangular synthetic resin sheet material has a flat portion 51 smaller than the plate portion 61 of the supporting case 6, and four sides of the flat portion 51 connected at the first folding line 5b. The four frame parts 52 are respectively bent by the first folding line 5b to be inclined relative to the flat part 51, thereby forming a case in which the frame parts are inclined outward relative to the flat part 51 and the front side is open. The body shape is such that the two edge portions 57a, 57a of the cutout portion 57 are brought together. In this state, the case shape can be maintained by affixing the double-sided adhesive tape 55 to the outer surfaces of both ends of the adjacent frame body parts 52 . In addition, the bent piece connected to one end of the adjacent frame portion 52 at the fourth folding line is integrated, so that the other end of the adjacent frame portion 52 can be easily bonded to the other end of the adjacent frame portion 52 with a double-sided adhesive tape. Combined with curved sheets.

Since other structures and functions are the same as those in Embodiment 1-1, the same components are given the same reference numerals, and detailed descriptions and descriptions of their functions and effects are omitted.

Embodiment 1-3

39 is a developed front view showing another structure of the main part of the reflection sheet included in the light source device according to the present invention, and FIG. 40 is an enlarged front view showing another structure of the main part of the reflection sheet. This light source device adopts the following structure: that is, three second folding lines 53 extending from the corners 51a of the flat portion 51 of the reflective sheet 5 to the periphery of the frame body portion 52 and one cutout 58 are provided instead of the corners 51a of the flat portion 51 of the reflective sheet 5. The corner 52a of the frame part 52 is provided with a cutout 57, the corner 52a of the frame part 52 is formed by the second folding line 53, and the end parts of the adjacent frame parts 52 are combined with each other by a cutout 58. The double-sided tape maintains the closed state and the corners 52a.

The cutouts 58 are arranged to extend from the corners 51a of the flat portion 51 along opposite sides of the flat portion 51, respectively, and the two end portions of the two frame portions connected to the opposite sides of the flat portion 51 have The two ends of the part protrude to the outside of the corner part 51a, and the protrusion a is opposite to the two ends of the other two frame parts.

On the protruding portion, three second folding lines extending from the corner portion 51a to the periphery of the corner portion 52a (the corner portion of the protruding portion) are provided.

In this embodiment, the frame part is bent from the folding line, and the protruding part is bent from three second folding lines, thereby forming a shell shape in which the frame part is inclined outward relative to the flat part 51 and the front side is open. The two folded parts bent at the second folding line are joined with a joining member such as a double-sided tape, and the edge parts formed by the cuts of the adjacent frame parts are joined to each other with an adhesive tape such as a double-sided tape. , to maintain the shell shape.

Since other structures and functions are the same as those in Embodiment 1-1, the same components are given the same reference numerals, and detailed descriptions and descriptions of their functions and effects are omitted.

Embodiment 1-4

FIG. 41A is a developed front view showing another structure of the main part of the reflection sheet, and FIG. 41B is a front view showing another structure of the main part of the reflection sheet, and is a case-shaped state. In this light source device, a locking convex portion and a locking concave portion for locking the locking convex portion are provided at the corners of the frame body portion 52 instead of using a double-sided adhesive tape as a coupling member for bonding the corner portions of the frame body portion. .

A substantially V-shaped cutout 57 is provided at the corner 52a of the frame portion 52, and the four frame portions 52 connected to the four sides of the flat portion 51 are bent relative to the flat portion 51 at the first folding line 5b. In the inclined shape, the two edge portions 57a, 57a of the cutout portion 57 are joined together, and the joined state is maintained by the locking convex part 59a and the locking concave part 59b.

A locking portion for preventing disengagement is provided at the front end of the locking convex portion 59a. The locking concave portion 59b is formed by a cutout, and the locking convex portion 59a is fitted into the locking concave portion 59b to keep the two edge portions 57a, 57a of the cutout portion 57 joined together as shown in FIGS. 40A and 40B .

Since other structures and functions are the same as those in Embodiment 1-1, the same components are given the same reference numerals, and detailed descriptions and descriptions of their functions and effects are omitted.

Embodiment 1-5

42 and 43 are plan views showing other configurations of the reflection sheet included in the light source device according to the present invention. This light source device adopts the following structure: that is, at the corner 52a of the frame part 52 of the reflection sheet 5 (B5), a roughly V-shaped cutout 57 gradually expanding from the corner 51a is provided, and the first folding line 5b When the four frame parts 52 connected to the four sides of the flat part 51 are bent obliquely with respect to the flat part 51, the two edge parts 57b, 57b of the cutout part 57 are overlapped in the thickness direction.

In FIG. 42, the edge portions 57b, 57b of the short frame portion 52b of the four frame portions 52 overlap the upper side of the long frame portion 52c. In FIG. 43, the long frame of the four frame portions 52 The edge portions 57b, 57b of the body portion 52c are overlapped on the upper side of the short frame portion 52b, and no gap is generated at the corner portion 52a of the frame portion 52 due to the overlapping.

Since other structures and functions are the same as those in Embodiment 1-1, the same components are given the same reference numerals, and detailed descriptions and descriptions of their functions and effects are omitted.

In addition, in Embodiment 1 described above, the double-sided tape was used as the joining member for joining the corner portion 52a of the frame portion 52, but in addition, a single-sided tape may be used, and a clip. In addition, the corner portion 52a of the frame portion 52 may also be bonded with an adhesive, and the bonding method is not particularly limited.

Embodiment 2-1

44 is an enlarged cross-sectional view showing a part of the structure of the light source device according to the present invention, FIG. 45 is a plan view obtained by omitting a part of the light source device, and FIG. 46 is an exploded view of a part of the light source device. 47 is a plan view showing no reflection sheet, FIG. 48 is a perspective view showing the structure of a light-emitting diode substrate mounted with a lens, and FIG. 49 is a perspective view showing the structure of a connector.

The illustrated light source device (B) is installed on the rear side of the display unit in the thin display device provided with the display unit (A). Light-emitting diode 1 (B1), the plurality of light-emitting diodes 1 (B1) are arranged side by side in a grid shape as light sources; a plurality of light-emitting diode substrates 2 (B3), the plurality of light-emitting diode substrates 2 (B3) are arranged side by side in a plurality of row, the light emitting diode 1 is installed on one surface 2a thereof; a plurality of connectors 3 (B4), the plurality of connectors 3 (B4) connect adjacent light emitting diode substrates 2, 2 to each other; a plurality of lenses 4 (B2), the plurality of lenses 4 (B2) are installed on one surface 2a of the light emitting diode substrate 2, opposite to the top of the light emitting diode 1, so that the light emitted by the light emitting diode 1 is diverged; the reflective sheet 5 (B5), This reflective sheet 5 (B5) has a through hole 51 (B53) for disposing the lens 4 inside, and the reflective sheet 5 (B5) is opposed to the one surface 2a and one surface of the connector 3, so that the lens 4 4. The diffused light is reflected; and a support body 6 (B6) supporting a plurality of rows of light-emitting diode substrates 2 side by side.

The light emitting diode substrate 2 has a rectangular shape having a circuit portion on one surface 2a, and a plurality of rows of the light emitting diode substrates 2 are arranged side by side separately in the longitudinal direction and the width direction on one surface 6a of a substantially rectangular support body 6 . As shown in FIG. 47 , a plurality of light emitting diodes 1 are separately mounted in the longitudinal direction on one surface 2 a of each light emitting diode substrate 2 , and connecting portions 21 and 22 are provided at both longitudinal ends of one surface 2 a.

The light-emitting diode substrates 2 are arranged side by side in a plurality of rows, so that one end in the longitudinal direction faces each other. In such a light-emitting diode substrate 2 , the two adjacent connecting parts 21, 21 of the light-emitting diode substrates 2 of each row are connected to each other by a connector 3 . For connection, use the second connector (B41) to connect the connection portion 22 of one LED substrate 2 to the power circuit substrate described later, and connect the connection portion 22 of the other LED substrate 2 to the short-circuit connector.

Connector 3 is substantially rectangular parallelepiped and includes a plug 31 connected to one connecting portion 21 and a socket 32 connected to the other connecting portion 21. When connecting the connector 3 to the connecting portions 21, 21, the connector 3 One side protrudes, and the other side coincides with one side 2a of the light emitting diode substrate 2 .

The reflection sheet 5 is formed by a piece of highly reflective and substantially rectangular synthetic resin sheet corresponding to the support body 6. On the position opposite to the outer edge portion of the connector 3, there are openings facing along the direction of the sheet surface. Between the two cutouts 52, 52 (B56, B59) that are spaced apart and facing each other, a biasing portion 53 that can be biased in the thickness direction is formed between the cutouts 52, 52 . In addition, on the reflective sheet 5 , through-holes 51 are opened at positions corresponding to the lenses 4 .

50 is an enlarged plan view of a portion of the reflection sheet facing the connector, and FIG. 51 is an enlarged perspective view showing a state where the portion of the reflection sheet facing the connector is deviated in the thickness direction. Two short sides 52b, 52b extending from both ends of the long side 52a, 52a toward the side where the distance between them becomes shorter are formed by utilizing the long sides 52a, 52a facing away from each other along the sheet surface. Roughly U-shaped slits 52, 52 (B59), the non-slit portions 52c, 52c between the respective two ends of the slits 52, 52 are connected with the deviation portion 53 between the slits 52, 52, and the deviation portion 53 can be formed by the non-slit portion 52c , 52c is the starting point of deviation and is biased toward the thickness direction.

Between the two slits 52, 52, there are two substantially U-shaped second slits 54, 54, the long sides 54a, 54a of the central part of the second slits 54, 54 are separated from the short sides 52b, 52b. On the other hand, the short sides 54b, 54b at both ends are separated from the long sides 52a, 52a and face each other. The non-cut portions 54c, 54c between the two ends of the second cutouts 54, 54 are connected to the central side of the long sides 52a, 52a, and the offset portion 53 can deviate in the thickness direction starting from the non-cut portions 54c, 54c.

Between the two second slits 54, 54, there are two substantially U-shaped third slits 55, 55. The long sides 55a, 55a and the short sides 54b, 54b The short sides 55b, 55b at both ends are separated and opposed to each other, and the long sides 54a, 54a are separated and opposed to each other. The non-slit portions 55c, 55c between the two ends of the third slits 55, 55 are connected to the central side of the long sides 54c, 54c, and the offset portion 53 can deviate in the thickness direction starting from the non-slit portions 55c, 55c.

The through-holes 51 have a circular shape slightly larger in diameter than the lenses 4 and are arranged in a grid pattern, and the lenses 4 are arranged inside the through-holes 51 .

As shown in FIG. 48, for example, 5 or 6 light emitting diodes 1 are installed separately along the length direction of the light emitting diode substrate 2, and 5 or 6 lenses 4 corresponding to the light emitting diodes 1 are mounted on the light emitting diode 1 with an adhesive. on one side 2a.

The lens 4 includes a light-transmitting part 41 and three positioning protrusions 42. The light-transmitting part 41 is separated from the top of the light-emitting diode 1 and opposite, and has a hemispherical concave part for diverging the light emitted by the light-emitting diode 1 to the surroundings. The positioning protrusion 42 protrudes from the light-transmitting part 41 facing the light-emitting diode substrate 2 opposite to the one surface 2a, and the light-transmitting part 41 is positioned relative to the light-emitting diode substrate 2. The front end of the positioning protrusion 42 is passed through the adhesive Installed on one surface 2a.

The positioning protrusion 42 is used to arrange the light-transmitting portion 41 on the upper side of the reflective sheet 5, in other words, to arrange the reflective sheet 5 on the side closer to the light-emitting diode substrate 2 than the light-transmitting portion 41, so that the light-transmitting portion The distance between 41 and the LED substrate 2 is slightly longer than the thickness of the reflective sheet 5, so that there is some space between the lower surface of the light-transmitting part 41 and one surface of the LED substrate 2. 1 When thermal expansion occurs due to heat generated during light emission, the reflective sheet 5 is allowed to expand and contract due to the thermal expansion, so that the reflective sheet 5 is prevented from being wrinkled.

The support body 6 is formed by molding a metal plate, and has a substantially rectangular flat plate portion 61 and a frame portion 62 connected to the periphery of the plate portion 61. On one surface 6a of the plate portion 61, there are In the width direction, the light emitting diode substrates 2 are accommodated and supported side by side.

A power circuit substrate is installed on one side of the other surface of the plate portion 61 in the longitudinal direction, and the power circuit substrate is connected to the connecting portion 22 of the LED substrate 2 through a second connector, and is installed on the other side of the longitudinal direction. There is a control circuit board for driving and controlling the display unit. In addition, a signal processing circuit board for processing video signals displayed on the display surface of the display unit is mounted on a central portion in the longitudinal direction of the other surface of the plate portion 61 .

For the light source device adopting the above-mentioned structure, the support body 6 is placed on the console with its open side facing upward, and on one surface 6a of the plate portion 61 of the support body 6, a plurality of rows are arranged side by side along the row direction. For two adjacent LED substrates 2, 2, the connector 3 is connected to the connecting portion 21, 21 arranged at an adjacent end of each row of LED substrates 2, 2, and the reflective sheet 5 is placed on the One surface of each row of light-emitting diode substrates 2 is made to face each other. The offset portion 53 between the cutouts 52 and 52 of the reflection sheet 5 faces the other surface of the connector 3 and covers the connector 3 , and the lenses 4 are inserted into the through holes 51 of the reflection sheet 5 .

At this time, since the connection portions 21 and 22 exist on one surface of the adjacent light-emitting diode substrates 2 in each row, the connector 3 connected to the connection portion 21 overlaps with the one surface 2a, and the connector 3 protrudes from the one surface 2a. , Therefore, the biased portion 53 of the reflective sheet 5 facing one side of the connector 3, in other words, the portion covering the connector 3 has the non-cut portions 52c, 52c, the non-cut portions 54c, 54c, and the non-cut portions 55c, 55c are starting points, and are gradually deviated in the thickness direction. In this way, since the part of the reflective sheet 5 opposite to the connector 3 is gradually biased through the cutouts 52, 52, the second cutouts 54, 54, and the third cutouts 55, 55, it is possible to improve the light emitted by the light emitting diode 1. The light reflectivity that reflects in the direction perpendicular to the sheet surface can make the brightness uniform.

52 is a cross-sectional view showing the structure of a display device including the light source device according to the present invention. The display device includes: a display part 70 (A), the front side of the display part 70 (A) has a display surface for displaying television images; a light source device A (B), the light source device A (B) is arranged on the display part 70 and a housing 71(D) that covers the peripheral portion of the display portion 70 and the rear side of the light source device A.

The display unit 70 includes a display panel 72 (A1) having a display surface, and an optical sheet 73 (C) arranged behind the display panel 72 . Utilize front supporting frame body 74 (A2) and rear supporting frame body 75 (A3), carry out forward and backward clamping to the peripheral part of display panel 72, to constitute panel assembly, rear supporting frame body 75 is installed on the peripheral part of supporting body 6 .

The optical sheet 73 is a laminate formed by laminating a thicker diffuser plate for diffusing light emitted from the light emitting diode 1 as a light source and a thinner synthetic resin sheet. Thin synthetic resin sheets include reflective polarizers, prism sheets, and diffuser sheets, among others.

The support body 6 has a plate portion 61 and a frame portion 62 connected to the periphery of the plate portion 61 , and supports the peripheral portion of the diffusion plate on the frame portion 62 .

The casing 71 has a casing front split body 71a (D1) that covers the front side of the peripheral portion of the display unit 70, and a deep dish-shaped casing rear split body 71b (D2) that covers the peripheral portion and the rear side of the light source device A. The housing 71 is attached to the frame portion 62 of the support body 6 by male screws.

Embodiment 2-2

53 is an enlarged plan view showing another structure of a cutout portion of the reflection sheet included in the light source device. This light source unit is provided with substantially L-shaped cutouts 56, 56 extending from long sides 56a, 56a separated in the direction along the sheet surface, and from one end of the long sides 56a, 56a toward the side where the separation distance becomes shorter. The two short sides 56b, 56b of the reflecting sheet 5 are replaced by two substantially U-shaped cutouts 52, 52, and the cutouts 56, 56 are opposite so that each long side 56a, 56a and short side 56b, 56b are approximately Quadrilateral. The non-slit portions 56c, 56c between both ends of the cutouts 56, 56 are connected to the offset portion 53 between the cutouts 56, 56, and the offset portion 53 can be offset in the thickness direction starting from the non-slit portions 56c, 56c.

Between the two slits, there are two opposite slits 57, 57. These two slits 57, 57 are approximately L-shaped respectively, and the respective long sides 57a, 57a and short sides 57b, 57b are approximately in the shape of each other. The corners of the two cutouts 57, 57 face the non-cutout portions 56c, 56c between the two ends of the cutouts 56, 56, respectively. The non-notch portions 57c, 57c between the respective ends of the notches 57, 57 are connected to the center side of the notches 56, 56, and the offset portion 53 can deviate in the thickness direction starting from the non-notch portions 57c, 57c.

In the present embodiment, the offset portion 53 of the reflective sheet 5 facing the connector 3 is gradually offset in the thickness direction starting from the non-cut portions 56c, 56c and the non-cut portions 57c, 57c. In this way, since the part of the reflection sheet 5 opposite to the connector 3 is gradually biased by the cutouts 56, 56, and the cutouts 57, 57, it is possible to improve the orientation of the light emitted by the light-emitting diode 1 to the direction perpendicular to the sheet surface. Reflective light reflectivity, so as to make the brightness uniform.

Since other structures and functions are the same as those in Embodiment 2-1, the same reference numerals are assigned to the same components, and detailed descriptions and descriptions of functions and effects thereof are omitted.

Embodiment 2-3

FIG. 54 is a plan view showing another configuration of the cutout portion of the reflection sheet included in the light source device. In this light source device, two substantially U-shaped cutouts 52, 52 or substantially L-shaped cutouts 56 of the reflective sheet 5 are replaced by paired cutouts 58, 58 (B56) that are separated along the direction of the sheet surface and parallel to each other. , 56, the pair of slits 58, 58 are separated along the direction in which the light emitting diode substrates 2 are arranged in multiple rows (orthogonal to or intersecting with the rows), and the opposite directions are alternately changed. In other words, the portion opposite to the connector 3 connected to a row of light-emitting diode substrates 2 is separated and opposed in the column direction, and the portion opposite to the connector 3 connected to the adjacent row of light-emitting diode substrates 2 is perpendicular to the column direction. The directions of the slits 58 and 58 facing each other in different directions are arranged alternately at intervals of the plurality of rows arranged side by side. In the case where the opposing directions of the paired cutouts 58, 58 arranged separately along the parallel arrangement direction of the light-emitting diode substrates 2 are the same, since the paired cutouts 58, 58 are arranged in parallel, the difference between the two ends of the cutouts 58, 58 is reduced. The directions of the cutouts 58a and 58a are the same, so the dispersion of the reflected light on the deflection part is reduced. However, when the paired cutouts 58 and 58 are alternately arranged at intervals of the multiple rows, the reflection can be improved. Dispersion of light on the biasing portion ensures proper luminance characteristics.

Two notches 58 , 58 facing each other in parallel deviate in the thickness direction from non-notch portions 58 a , 58 a between both ends of the notches 58 , 58 . The two adjacent cutouts 58, 58 are arranged in a direction in which the non-cutout portions 58a, 58a are perpendicular to each other.

In this embodiment, when the number of LED substrates 2 arranged in parallel in multiple rows, in other words, the number of connectors 3 arranged in parallel is large, the number of connectors 3 facing each other can be reduced. The inclination due to partial deviation can improve the light reflectivity in the direction perpendicular to the sheet surface, thereby ensuring appropriate luminance characteristics.

Since other structures and functions are the same as those in Embodiment 2-1, the same reference numerals are assigned to the same components, and detailed descriptions and descriptions of functions and effects thereof are omitted.

Embodiment 2-4

55 is a plan view showing another structure of a cutout portion of the reflection sheet included in the light source device. In this light source device, the bias portion 53 is formed using a cutout 59 in a spiral shape instead of forming the bias portion 53 by separating opposing cutouts.

The notch 59 adopts the following structure: that is, it is in a spiral shape from the starting point to the terminal end, and when abutting against the connector 3 , the two ends of the notch 59 are gradually deviated as a whole.

Since the other configurations and functions are the same as those in Embodiment 1, the same components are assigned the same reference numerals, and detailed descriptions and descriptions of operations and effects thereof are omitted.

Embodiment 2-5

FIG. 56 is a plan view showing another configuration of the cutout portion of the reflection sheet included in the light source device. In this light source device, the offset portion 53 is formed by a substantially quadrangular spiral cutout 50 instead of by a circular spiral cutout 59 .

The notch 50 adopts the following structure: that is, it has a substantially quadrangular spiral shape from the starting point to the terminal end, and the two ends of the notch 50 are gradually deviated as a whole when abutting against the connector 3 .

In this embodiment, even when the number of light emitting diode substrates 2 arranged in parallel in multiple rows, in other words, the number of connectors 3 arranged in parallel is large, the distance between the cutouts 50 can be ensured, thereby It is possible to increase the number of parallel arrangements of the cutouts 50 .

Since other structures and functions are the same as those in Embodiment 2-1, the same reference numerals are assigned to the same components, and detailed descriptions and descriptions of functions and effects thereof are omitted.

Embodiment 2-6

FIG. 57 is a plan view showing another configuration of the cutout portion of the reflection sheet included in the light source device. In this light source device, one of the two substantially U-shaped cutouts 52, 52 is biased in a direction intersecting with the opposing direction of the cutouts 52, 52 so that the short sides 52b, 52b at both ends of each cutout 52, 52 are along the The direction perpendicular to the above-mentioned opposing direction is separated and opposed, instead of a structure in which both ends of the two substantially U-shaped cutouts 52 and 52 are approached and opposed.

The short sides 52b, 52b of the two ends of the two cutouts 52, 52 are opposite to the two corners of the respective cutouts 52, 52, and the two ends of the two cutouts 52, 52 and the two corners of the respective cutouts 52, 52 The non-slit portions 52c, 52c between them are connected to the offset portion 53 between the cutouts 52, 52, and the offset portion 53 can be offset in the thickness direction starting from the non-slit portions 52c, 52c.

In this embodiment, there is an offset portion 53 between the substantially U-shaped cutouts 52, 52, and the offset portion 53 of the reflection sheet 5 facing the connector 3 can make the distance between the non-cutout portions 52c, 52c longer. , so that the offset portion 53 can be gradually offset in the thickness direction from the non-notch portions 52c and 52c as starting points. In this way, since the part of the reflective sheet 5 opposite to the connector 3 is gradually deviated by the longer distance between the non-cutout parts 52c and 52c, the direction of the light emitted by the light emitting diode 1 and perpendicular to the sheet surface can be improved. The light reflectivity of the reflection in the direction, so as to make the brightness uniform.

Since other structures and functions are the same as those in Embodiment 2-1, the same reference numerals are assigned to the same components, and detailed descriptions and descriptions of functions and effects thereof are omitted.

In addition, in Embodiment 2-1 to Embodiment 2-6 described above, as shown in FIG. 45 and FIG. On the position, the offset portion 53 formed by the notch 52 etc. is arranged, but in addition, the offset portion 53 can also be arranged as shown in Fig. 58 and Fig. 60. In addition, the following structure can also be adopted: that is, as As shown in FIG. 59 , the offset portion 53 is not provided, but a through hole is provided instead of the offset portion 53 . 58 to 60 are perspective views showing other configurations of the reflection sheet. In FIG. 58 , offset portions 53 formed by notches 52 and the like are provided only at positions corresponding to the LED substrates 2 at both ends in the parallel arrangement direction of the LED substrates 2 arranged in multiple rows. In FIG. 59 , through-holes 59 larger than the connectors are provided only at positions corresponding to the LED substrates 2 at both ends in the parallel arrangement direction of the LED substrates 2 arranged in multiple rows. In FIG. 60 , at the positions corresponding to the light-emitting diode substrates 2 at both ends of the parallel arrangement direction of the light-emitting diode substrates 2 arranged side by side in multiple rows, a through hole 59 larger than the connector is provided. On the positions corresponding to the LED substrates 2 adjacent to the LED substrates 2 at both ends, there are biased parts 53 formed by the cutouts 52 and the like. In the form of FIGS. 58 and 60 , since the connector is disposed in the offset portion 53 , the reflection sheet 5 can be positioned with respect to the support body 6 , and misalignment of the reflection sheet 5 can be prevented. In the form of FIG. 59 , since the connector is arranged in the through hole 59 , the reflection sheet 5 can be positioned relative to the support body 6 , and the misalignment of the reflection sheet 5 can be prevented.

Embodiment 3-1

Fig. 61 is a longitudinal sectional view schematically showing the display device.

In the figure, reference numeral 1 is a rectangular display panel (A1) having liquid crystals. The display panel 1 has a structure in which a voltage applied to liquid crystals is controlled to adjust light transmittance to display video. The peripheral portion of the display panel 1 is sandwiched between the front holding frame 2 (A2) and the rear holding frame 3 (A3), and is accommodated in a rectangular frame-shaped front case 4 (D1). The front case 4 is disposed around the front holding frame 2 and the rear holding frame 3 . The front case 4 has a rectangular opening whose size corresponds to that of the display panel 1 . The rear side of the display panel 1 is provided with a plurality of optical sheets 5 (C) that focus light of an LED 9 (light emitting element) described later toward the display panel 1 .

The rear side of this optical sheet 5 (C) is provided with the diffusion plate 6 which diffuses the light of LED9 (B1) uniformly. The diffuser plate 6 is supported by the edge portion of a deep dish-shaped support plate 7 (B6). A plurality of LED substrates 8 (B3) are arranged side by side on the front surface of the support plate 7 (B6), and on the rear surface of the LED substrate 8, a film-like heat dissipation pattern formed of a thermally conductive material such as metal is formed. (not shown), thereby having a structure in which the heat generated by the LED substrate 8 is diffused from the heat dissipation pattern to the support plate 7 when the LED 9 is turned on, so that the heat dissipation of the LED substrate 8 is improved.

On the front surface of this LED substrate 8, a plurality of LED9, 9, ..., 9 (B1) are installed, and the front side of each LED9, 9, ..., 9 is respectively equipped with a light emitting diode. Diffused lenses 10, 10, ..., 10 (B2). At the peripheral portion of the lens 10, three protrusions 10a, 10a, 10a (B22) protruding toward the LED substrate 8 side are arranged side by side along the circumferential direction, and the front end of the protrusion 10a is mounted on the front of the LED substrate 8 by an adhesive. On the surface.

Support stands (not shown) for supporting the deep dish-shaped reflection sheet 11 (B5) are provided on the left and right sides of the support plate 7, respectively. On the bottom surface of the reflection sheet 11, a plurality of sheet holes 11a into which the lenses 10 are inserted are opened (B53). Each lens 10 protrudes to the front side through the sheet hole 11a.

The rear side of the support plate 7 is provided with a deep dish-shaped rear housing 12 ( D2 ). The rear case 12 has substantially the same longitudinal and transverse dimensions as those of the front case 4, and edge portions of the rear case 12 and front case 4 are opposed to each other. On the edge portions of the front case 4 and the rear case 12, there are respectively provided with an engaging convex portion and an engaging concave portion not shown, and the engaging concave portion and the engaging convex portion are engaged to fix the front case 4 to the rear. shell12. In addition, a plurality of circuit boards (not shown) such as a control circuit board for driving and controlling the display panel 1 and a signal processing circuit board for processing video signals displayed on the display surface of the display panel 1 are accommodated in the rear case 12. As shown in the figure), the display panel 1 is driven based on the output signal from the circuit board.

FIG. 62 is a front view schematically showing LED 9 and LED substrate 8 provided with a reflection sheet, and FIG. 63 is a cross-sectional view along line I-I in FIG. 62 schematically showing a rivet.

On the LED board 8 ( B3 ), a plurality of board holes 8 a ( B33 , B34 ) are arranged side by side at equal intervals along the longitudinal direction of the LED board 8 . As shown in FIG. 63, a plurality of through-holes 7a (B64) are opened in the support plate 7 (B6) at positions corresponding to the substrate holes 8a. The diameter of the through hole 7a is substantially the same as that of the substrate hole 8a. On the reflective sheet 11 (B5), an insertion hole 11b (B54) having a diameter larger than that of the substrate hole 8a is opened at a position corresponding to the substrate hole 8a.

As shown in FIG. 62 , between the lenses, synthetic resin rivets 20 ( B7 ), positioning rivets 30 , and support rivets 40 ( B8 ) are respectively provided.

It is also possible to adopt a structure in which a rivet 20 formed of a carbon material is inserted into the substrate hole 8a and the through hole 7a instead of the rivet 20 made of synthetic resin, and the rivet 20 may be formed of metal, for example. 20 to fix the LED substrate 8 on the support plate 7. The synthetic resin rivet 20 includes a socket rivet 22 ( B71 ) and an insertion rivet 21 ( B72 ).

The receiving rivet 22 has an annular locking portion 22a (B71a) whose diameter is larger than that of the substrate hole 8a. The outer peripheral portion of the locking portion 22a is located outside the substrate hole 8a and inside the insertion hole 11b, It is fixed to the edge portion of the substrate hole 8a. On the inner peripheral portion of the locking portion 22a, a plurality of elastic portions 22b are arranged side by side in the circumferential direction. The elastic portion 22b protrudes in the axial direction of the locking portion 22a, and is inserted through the substrate hole 8a and the through hole 7a. The axial dimension of the elastic portion 22b is larger than the axial dimensions of the substrate hole 8a and the through hole 7a, and the protruding end portion of the elastic portion 22b protrudes from the through hole 7a in the axial direction.

On the protruding end portion of the elastic portion 22b, an abutment portion 22c protruding radially inward of the locking portion 22a is integrally provided with the elastic portion 22b, and a gap ( B71b).

The inner side of the contact portion 22c is in contact with a leg portion 21b described later, and the contact of the leg portion 21b bends the elastic portion 22b outward so that the elastic portion 22b contacts the edge portion of the through hole 7a. Therefore, the LED board 8 and the support plate 7 are sandwiched between the locking portion 22a and the elastic portion 22b front and rear.

The insertion rivet 21 has a head 21a (B72a) having a diameter larger than that of the insertion hole 11b, and a cylindrical leg 21b perpendicular to the head 21a is provided at the center of the head 21a. A tapered portion 21ba is formed at the tip portion of the leg portion 21b so that the diameter of the leg portion 21b gradually decreases toward the tip. The diameter of the leg portion 21b near the head portion 21a is substantially the same as the inner diameter of the locking portion 22a, which is larger than the dimension between the abutting portions 22c when the leg portion 21b is not inserted. In addition, the edge portion of the head portion 21a protrudes toward the foot portion 21b, and the extension width of the edge portion of the head portion 21a is smaller than the axial dimension of the locking portion 22a, that is, the thickness dimension of the locking portion 22a.

The leg portion 21b inserted into the rivet 21 is inserted into the locking portion 22a, and the front end portion of the leg portion 21b is inserted into the gap between the abutting portions 22c. A tapered portion 21ba is formed on the front end portion of the leg portion 21b, and the gap is opened by inserting the leg portion 21b. The elastic portion 22b is bent outward, and contacts the edge portion of the through hole 7a.

The head portion 21 a is in contact with the locking portion 22 a, and the head portion 21 a is not in contact with the reflection sheet 11 . A slight gap is provided between the edge portion of the head 21a protruding out to the foot portion 21b side and the reflection sheet 11, and when the reflection sheet 11 thermally expands due to the light emitted by the LED9, the reflection sheet 11 is allowed to expand due to the thermal expansion. The expansion and contraction occurs to prevent the reflective sheet 11 from wrinkling. The reflective sheet 11 is held by the edge portion of the head portion 21a, and the deflection of the reflective sheet 11 in the thickness direction is suppressed. The support plate 7 and the LED substrate 8 are held between the support plate 7 and the LED substrate 8 with appropriate pressure by the elastic portion 22 b and the locking portion 22 a, so that the LED substrate 8 is brought into close contact with the support plate 7 .

Next, the positioning rivets 30 will be described. FIG. 64 is a cross-sectional view taken along line II-II of FIG. 62 schematically showing the set rivet 30 . Positioning holes 7b, 8b (B60, B35) are respectively opened at appropriate positions of the support plate 7 and the LED substrate 8, and each positioning hole is adjacent to the through hole 7a and the substrate hole 8a respectively. The respective positioning holes are arranged coaxially by the support plate 7 and the LED substrate 8 .

As shown in FIG. 62, a keyhole-shaped insertion hole 11c (B57) in which a part of the circle protrudes outward is opened in the reflection sheet 11, and the through hole 7a and the substrate hole 8a are located on the circle of the insertion hole 11c. shaped part. The positioning holes 7b and 8b are located in the protruding portion of the insertion hole 11c. The width dimension of the protruding portion of the insertion hole 11c is slightly larger than that of the positioning holes 7b, 8b. Positioning rivets 30 ( B7 , B73 ) are inserted into the through holes 7 a , substrate holes 8 a , and positioning holes 7 b , 8 b.

The positioning rivet 30 includes a receiving rivet 22 (B71) and an insertion rivet 31 (B72). In addition, the receiving rivet 22 of the positioning rivet 30 has the same structure as the receiving rivet of the rivet 21, and the same reference numerals are attached thereto, and detailed description thereof will be omitted.

The insertion rivet 31 includes a head 31a (B72a) having a diameter larger than that of the insertion hole 11c, and the head 31a has an oval shape. At one end of the head portion 31a, a columnar leg portion 31b is provided at right angles to the head portion 31a. A tapered portion 31ba is formed at the tip portion of the leg portion 31b so that the diameter of the leg portion 31b gradually decreases toward the tip. The diameter of the leg portion 31b near the head portion 31a is substantially the same as the inner diameter of the locking portion 22a, which is larger than the dimension between the abutting portions 22c when the leg portion 31b is not inserted. At the other end of the head portion 31a, a cylindrical positioning portion 31c (B73) perpendicular to the head portion 31a is provided. The diameter of the positioning portion 31c is slightly smaller than the diameters of the positioning holes 7b, 8b. The dimension between the positioning portion 31c and the leg portion 31b is substantially the same as the dimension between the through hole 7a, the substrate hole 8a, and the positioning holes 7b, 8b. In addition, the edge portion of the head portion 31a protrudes toward the foot portion 31b, and the extension width of the edge portion of the head portion 31a is smaller than the axial dimension of the locking portion 22a, that is, the thickness dimension of the locking portion 22a.

The positioning part 31c is inserted into the positioning holes 7b, 8b to make the reflective sheet move along the width direction of the protruding part of the insertion hole 11c. The edges abut so that the reflective sheet can be positioned.

The leg portion 31b inserted into the rivet 31 is inserted into the locking portion 22a, and the front end portion of the leg portion 31b is inserted into the gap between the abutting portions 22c. A tapered portion 31ba is formed at the front end portion of the leg portion 31b, and the gap is opened by inserting the leg portion 31b. The elastic portion 22b is bent outward, and contacts the edge portion of the through hole 7a.

The head 31a abuts against the locking portion 22a, the head 31a is not in contact with the reflective sheet 11, a slight gap is provided between the head 31a and the reflective sheet 11, and the thermal expansion of the reflective sheet 11 occurs due to the light emitted by the LED9 During this time, the reflective sheet 11 is allowed to expand and contract due to the thermal expansion, so as to prevent the reflective sheet 11 from wrinkling. The reflective sheet 11 is pressed by the edge portion of the head portion 31a. The support plate 7 and the LED substrate 8 are held between the support plate 7 and the LED substrate 8 with appropriate pressure by the elastic portion 22 b and the locking portion 22 a, so that the LED substrate 8 is brought into close contact with the support plate 7 .

Next, the backup rivet 40 will be described. FIG. 65 is a cross-sectional view along line III-III in FIG. 62 schematically showing the support rivet 40 .

The support rivet 40 (B8) includes the receiving rivet 22 (B81) and the insertion rivet 41 (B82). In addition, the receiving rivet 22 of the supporting rivet 40 has the same structure as the above-mentioned rivet 21 or the receiving rivet of the positioning rivet, and the same reference numerals are attached thereto, and detailed description thereof will be omitted. As shown in Figure 62, on the reflection sheet 11, an insertion hole 11d (B55) is opened at a position corresponding to the substrate hole 8a (B65). diameter of.

The insertion rivet 41 has a head 41a (B82a) having a diameter larger than the insertion hole 11d, and a cylindrical leg 41b at a right angle to the head 41a is provided at the center of the head 41a. A tapered portion 41ba is formed at the tip portion of the leg portion 41b so that the diameter of the leg portion 41b gradually decreases toward the tip. The diameter of the leg portion 41b near the head portion 41a is substantially the same as the inner diameter of the locking portion 22a, which is larger than the dimension between the abutting portions 22c when the leg portion 41b is not inserted. In addition, the edge portion of the head portion 41a protrudes toward the leg portion 41b, and the extension width of the edge portion of the head portion 41a is smaller than the axial dimension of the locking portion 22a, that is, the thickness dimension of the locking portion 22a.

A conical support portion 41c (B83) whose tip is formed into a curved surface protrudes in the axial direction from the center portion of the head portion 41a on the side opposite to the locking portion 22a. The support portion 41c supports the diffuser plate 6 .

The leg part 41b inserted into the rivet 41 is inserted into the locking part 22a, and the front end part of the leg part 41b is inserted into the gap between the contact parts 22c. A tapered portion 41ba is formed at the front end portion of the leg portion 41b, and the gap is gradually opened by inserting the leg portion 41b. The elastic portion 22b is bent outward, and contacts the edge portion of the through hole 7a.

The head 41a abuts against the locking portion 22a, the head 41a is not in contact with the reflective sheet 11, a slight gap is provided between the head 41a and the reflective sheet 11, and the reflective sheet 11 thermally expands due to the light emitted by the LED9 During this time, the reflective sheet 11 is allowed to expand and contract due to the thermal expansion, so as to prevent the reflective sheet 11 from wrinkling. The reflective sheet 11 is pressed by the edge portion of the head portion 41a. The support plate 7 and the LED substrate 8 are held between the support plate 7 and the LED substrate 8 with appropriate pressure by the elastic portion 22 b and the locking portion 22 a, so that the LED substrate 8 is brought into close contact with the support plate 7 .

In the display device according to Embodiment 3-1, since the reflection sheet 11 is disposed between the heads of the rivets 20, the positioning rivets 30, and the supporting rivets 40, and one surface of the LED substrate 8, between the heads and the A gap is provided between the reflective sheets 11, so that the reflective sheet 11 can expand and contract between the head and the reflective sheet 11 in the event of a sudden thermal change, thereby preventing the reflective sheet 11 from wrinkling.

In addition, the heads of the rivets 20, the positioning rivets 30, and the support rivets 40 are brought into contact with the locking portion 22a, and the reflective sheet 11 can be aligned with a slight gap between the edge portion of the head and the reflective sheet 11. By holding, it is possible to prevent the reflection sheet 11 from being wrinkled. In addition, in the state where the locking portion 22a is locked to the edge portion of the substrate hole 8a, the elastic portion 22b is inserted into the substrate hole 8a and the through hole 7a, and the rivet 20, the positioning rivet 30, or the leg supporting the rivet 40 Part is inserted into the locking part 22a and made to abut against the abutting part 22c. At this time, since the elastic portion 22b bends outward in the radial direction through elastic deformation, the curved elastic portion 22b contacts the edge portion of the through hole 7a, so the LED substrate can be clamped by the locking portion 22a and the elastic portion 22b 8 and support plate 7.

In addition, by inserting the positioning portion 31c into the positioning holes 7b, 8b, when the reflective sheet 11 rotates, the reflective sheet 11 abuts against the positioning portion 31c, thereby preventing the reflective sheet 11 from rotating. Therefore, the reflective sheet 11 can be reliably positioned.

In addition, since the support rivet 40 holds the reflection sheet 11 and supports the diffuser plate 6 by the support portion 41c, it is possible to prevent the diffuser plate 6 from bending and reduce the number of parts.

In addition, in the display device according to Embodiment 3-1, the positioning holes 7 b and 8 b are formed in the support plate 7 and the LED substrate 8 , respectively, but the positioning hole 8 b may be formed only in the LED substrate 8 . It goes without saying that in this case, the axial dimension of the positioning portion 31c corresponds to the axial dimension of the positioning hole 8b. In addition, the display device according to the embodiment uses LED 9 as a light emitting element, but an LD (Laser Diode) or the like may also be used. In addition, you may further provide the support part 41c to the head part 31a, 41a which inserts the rivet 21,31.

Embodiment 3-2

66A and 66B are enlarged cross-sectional views showing other structures of the portion where the LED board 8 is fixed to the support plate 7 . FIG. 66A has a structure in which a single rivet 50 (B7) is used instead of the rivet 20 (B7) having the receiving rivet 22 (B71) and the insertion rivet 21 (B72) to fix the LED substrate 8 (B3) to the support plate 7 (B6). , FIG. 66B has a structure in which the LED substrate 8 is fixed to the support plate 7 by using the male screw 60 (B7) instead of the rivet.

The rivet 50 (B7) of Fig. 66A comprises a head 50a (B72a), a step 50b, and a plurality of feet 50c, the diameter of the head 50a is larger than the insertion hole 11b, and the step 50b and the head The central part of the step part 50a is connected, and its diameter is larger than that of the substrate hole 8a (B33a, B34a). The front end of the portion 50c is provided with a claw portion 50d engaged with the hole edge portion of the through hole 7a.

In this structure, the leg portion 50c is inserted into the substrate hole 8a and the through hole 7a from the insertion hole 11b, so that the claw portion 50d is fastened to the hole edge portion of the through hole 7a, and the step portion 50b is aligned with the hole edge portion of the substrate hole 8a. parts to abut against each other to fix the LED substrate 8 to the support plate 7 . A slight gap is set between the edge portion of the head 50a and the reflection sheet 11. When the reflection sheet 11 thermally expands due to the light emitted by the LED9, the reflection sheet 11 is allowed to expand and contract due to the thermal expansion, so that the reflection sheet 11 will not Create wrinkles.

The male screw 60 (B7) of FIG. 66B includes a head 60a (B72a), a stepped portion 60b, a stepped portion 60c, and a screw shaft portion 60d. The diameter of the head portion 60a is larger than the insertion hole 11b, and the stepped portion 60b is connected to the central portion of the head portion 60a, and its diameter is larger than that of the substrate hole 8a (B33a, B34a), and the stepped portion 60c is connected to the central portion of the stepped portion 60b, and its diameter is larger than that of the through hole 7a (B64). The screw shaft portion 60d is connected to the central portion of the stepped portion 60c, and is screwed into the through hole 7a.

In this structure, the screw shaft portion 60d side of the male screw 60 is inserted into the substrate hole 8a from the insertion hole 11b, and the screw shaft portion 60d is screwed into the through hole 7a, so that the stepped portion 60c is aligned with the hole edge portion of the through hole 7a. contact to fix the male screw 60 to the support plate 7 , and make the stepped portion 60 b abut against the edge of the substrate hole 8 a to fix the LED substrate 8 to the support plate 7 . A slight gap is set between the edge portion of the head 60a and the reflection sheet 11. When the reflection sheet 11 thermally expands due to the light emitted by the LED9, the reflection sheet 11 is allowed to expand and contract due to the thermal expansion, so that the reflection sheet 11 will not Create wrinkles.

Embodiment 4

67 is a cross-sectional view of main parts showing the structure of the light source device according to the present invention, FIG. 68 is a plan view of a part of the light source device, and FIG. 69 is a plan view obtained by disassembling a part of the light source device. 70 is a top view of a part of the light source device, FIGS. 71 and 72 are enlarged top views of a part of the light source device, and FIGS. 73 and 74 show the structure of a light-emitting diode substrate on which a lens is mounted. As a perspective view, FIG. 75 is a cross-sectional view showing an example of a fixing member.

The light source device includes: a plurality of light-emitting diode substrates 2 (B3), which are separated from each other and arranged side by side, and a plurality of light-emitting diodes 1 (B1) are installed on one surface 2a; a plurality of lenses 3 (B2), the plurality of lenses 3 (B2) are installed on one surface 2a of the light emitting diode substrate 2, opposite to the top of each light emitting diode 1, so as to diffuse the light emitted by the light emitting diode 1; the reflection sheet 4 ( B5), the reflection sheet 4 (B5) has a through hole 41 (B53) for disposing the lens 3 inside, is placed on one surface 2a of the LED substrate 2, and reflects the light emitted by the LED 1 a plurality of connectors 5 (B4), the plurality of connectors 5 (B4) adjacent LED substrates 2, 2 are connected to each other; and a support body 6 (B6), the support body 6 (B6) is located in the LED The other surface 2 b side of the substrate 2 supports a plurality of light emitting diode substrates 2 .

The light emitting diode substrate 2 ( B3 ) has a circuit portion on one surface 2 a and has a rectangular shape (rectangular shape) with a large ratio of length to width. On each one surface 2 a of the light emitting diode substrate 2 , a plurality of light emitting diodes 1 are mounted at substantially the same intervals in the longitudinal direction and separated from each other. The light emitting diode substrate 2 is a single-sided substrate having a conductive portion only on one side 2a. A plurality of rectangular light-emitting diode substrates 2 are arranged in parallel on one surface 6 a of a substantially rectangular support 6 , with the long sides aligned in the same direction and separated from each other along the long and width directions.

In FIG. 69, the following example is shown: that is, the light emitting diode substrate 2 on which six light emitting diodes 1 are mounted is arranged in the center, and the light emitting diode substrate 2 on which five light emitting diodes 1 are mounted is arranged on both sides. The three LED substrates 2 connected in a row are arranged in 8 rows side by side, and the mounting intervals of the LEDs 1 on the LED substrates 2 are substantially the same in the width direction. The dimensions in the longitudinal direction of the light emitting diode substrates 2 arranged in a direction perpendicular to the row of the light emitting diode substrates 2 arranged in a row are substantially the same. Furthermore, the light emitting diodes 1 on all the light emitting diode substrates 2 are arranged at approximately the same two-dimensional intervals.

Connection portions 21 , 22 ( B31 , B32 ) are provided at both ends in the longitudinal direction of one surface 2 a of the light emitting diode substrate 2 . Among the three light emitting diode substrates 2 arranged side by side in a row, the connection portions 21 and 21 of the adjacent light emitting diode substrates 2 are connected to each other by the connector 5 ( B4 ). In addition, as will be described later, the connection portion 22 of the LED substrate 2 located at one end of the column is connected to the power circuit substrate through the connector (B41), and the connection portion 22 of the LED substrate 2 located at the other end of the column is connected to the short circuit. connected to the device.

The lens 3 (B2) includes a light-transmitting part 31 (B21) and three positioning protrusions 32 (B22). 1. The hemispherical concave portion where the emitted light diffuses to the surroundings. The positioning protrusion 32 (B22) protrudes from the light-transmitting portion 31 facing the light-emitting diode substrate 2 opposite to the one surface 2a, and the lens 3 is opposite to the light-emitting diode substrate 2. For positioning, the front end of the positioning protrusion 32 is attached to the one surface 2a with an adhesive. The light transmitting portion 31 is formed slightly smaller than the through hole 41 of the reflection sheet 4 .

The reflective sheet 4 (B5) is formed by a piece of synthetic resin sheet having light reflectivity and a substantially rectangular shape corresponding to the support body 6. On the positions corresponding to the lenses 3 respectively, there are light-transmitting parts 31 with a diameter ratio. The slightly larger circular through-holes 41 (B53) arranged in a grid shape are provided with a substantially rectangular second through-hole for the connector 5 to pass through at the position corresponding to the connector 5. Hole 42.

At one end and the other end of the rectangular light-emitting diode substrate 2 along the lengthwise direction, two through holes 2c, 2d (B33, B34) for the insertion of the rivet 8 (B7) are opened, and the rivet 8 (B7) is for supporting the light emitting diode substrate 2 on the support body 6 . Each insertion hole 2c, 2d is located between two adjacent lenses 3 . One of the two insertion holes 2c, 2d (B33) has a smaller dimension in the substrate longitudinal direction than the other insertion hole 2d (B34). Specifically, one insertion hole 2c is a circular hole, and the other insertion hole 2d has an oblong shape that is elongated in the long side direction of the substrate. Each LED substrate 2 is arranged such that the small insertion hole 2c and the large insertion hole 2d are adjacent to each other at the ends where the LED substrates 2 arranged in a row are connected.

The eight light emitting diode substrates 2 are adjacent in the direction perpendicular to the columns of the light emitting diode substrates 2 arranged side by side in a row. On the eight light emitting diode substrates 2, eight through holes on one side of one end 2c are arranged in a zigzag shape, and the eight insertion holes 2d on the other end side are arranged in a zigzag shape. Specifically, a structure is adopted in which the insertion holes 2c on the one end side are alternately arranged at positions close to one of the two lenses 3 located on the one end side and at positions close to the other lens. , similarly, the insertion holes 2d on one side of the other end are alternately arranged at a position close to one of the two lenses 3 on the other end side and at a position close to the other lens, so that the insertion holes 2d The rivets 8 that fix both ends of the light emitting diode substrate 2 to the support body 6 through the insertion holes 2c and 2d are arranged in a zigzag shape, so that the influence of the decrease in brightness caused by the rivets 8 can be dispersed, and the illumination can be suppressed. The brightness of the light is uneven.

The support body 6 is formed by forming a metal plate, and has a substantially rectangular flat plate-shaped plate portion 61 (B61) and a frame portion 62 (B62) connected to the periphery of the plate portion 61 . 6a, the light emitting diode substrates 2 are housed and supported along the longitudinal direction and the width direction. Through-holes 61 a ( B64 ) are provided in the plate portion 61 of the support body 6 corresponding to the positions of the respective insertion holes 2 c and 2 d of the light-emitting diode board 2 .

As shown in FIG. 75, the rivet 8 (B7) includes: a cylindrical member 81 (B71) having an outer diameter g1 capable of passing through the insertion holes 2c, 2d and the through hole 61a, and one end of which is provided There is a flange portion 81a (B71a) that cannot pass through the insertion holes 2c, 2d and the through hole 61a, and the inner diameter g3 at the other end is smaller than the inner diameter g2 at one end; and the shaft member 82 (B72), the shaft member 82 (B72 ) has a shaft portion 82a that can be inserted into one end of the cylindrical member 81 and has a diameter larger than the inner diameter g3 of the other end, and a head portion 82b (B72a) that cannot pass through the insertion holes 2c, 2d and the through hole 61a. The barrel member 81 and the shaft member 82 are made of synthetic resin material.

On the reflection sheet 4, a long-hole-shaped third through hole 43 (B54) connected to the through hole 41 is opened at a position corresponding to the rivet 8. The third through hole 43 (B54) has a ratio of the shaft member 82. The diameter of the head portion 82b is large so that the rivet 8 can be inserted therethrough. The third through-holes 43 adjacent to the column of the light-emitting diode substrate 2 in a zigzag configuration, the long hole connected to one of the through-holes 41 on both sides and the long hole connected to the other through-hole. The shapes of the long holes are alternately changed.

As described above, for the rivets 8 inserted through the respective insertion holes 2c, 2d of the light emitting diode substrate 2 and the third through hole 43 of the reflection sheet 4, the eight adjacent rivets in the direction perpendicular to the columns of the light emitting diode substrate 2 The eight rivets 8 on one side of one end of the block light-emitting diode substrate 2 are arranged in a staggered shape, and the eight rivets 8 on the other end side are arranged in a staggered shape, so that the influence of brightness reduction caused by the rivets 8 can be dispersed. , can suppress the brightness unevenness of the illumination light.

Next, a procedure for supporting the three light-emitting diode substrates 2 connected in a row on the support body 6 with the rivets 8 will be described. First, after aligning the positions of the insertion holes 2c and 2d of the respective light emitting diode substrates 2 with the respective through holes 61a of the support body 6, the cylindrical member 81 is inserted to a size from the side of one surface 2a of each light emitting diode substrate 2. The small through hole 2c and the through hole 61a are inserted, and the flange portion 81a is brought into contact with the one surface 2a of the light emitting diode substrate 2 . Next, when the shaft portion 82a of the shaft member 82 is inserted until the head portion 82b contacts the flange portion 81a of the tube member 81, the front end of the tube member 81 is stretched outward by the shaft portion 82a of the shaft member 82. The shaft portion 82a of the shaft member 82 is held by pressing the shaft portion 82a of the shaft member 82 inwardly by the front end portion of the tube member 81 stretched outward, and the front end portion of the tube member 81 whose diameter has been enlarged cannot be inserted through the through hole of the support body 6. 61a, therefore, each light emitting diode substrate 2 can be fixed to the support body 6 by using the rivets 8 .

After attaching the rivets 8 to the smaller insertion holes 2c as described above, the rivets 8 are similarly attached to the larger insertion holes 2d to fix the light emitting diode substrates 2 to the support body by the rivets 8. 6. At this time, when the connector 5 is used to connect the adjacent light-emitting diode substrates 2, the positions of the two substrates are misaligned from appropriate positions along the substrate width direction. In this case, the through hole of the support body 6 61a is not located in the center of the insertion hole 2d, but since the size of the insertion hole 2d along the width direction of the substrate is increased, the through hole 61a will not deviate from the range of the insertion hole 2d, so that the rivet 8 can be inserted through The hole 2d and the through-hole 61a are inserted and attached.

After the rivets 8 are installed in the insertion holes 2c and 2d of all the light emitting diode substrates 2, the through hole 41 is inserted by the lens 3, the second through hole 42 is inserted by the connector 5, and the third through hole 43 is inserted by each The rivets 8 are penetrated, and in this state, the reflective sheet 4 is placed on the light emitting diode substrate 2 so that they face each other.

FIG. 76 is a cross-sectional view showing the structure of a display device including the light source device according to the present invention. The display device includes: a display part 70 (A), which is approximately rectangular parallelepiped and has a display surface 72a on its front side; a light source device A (B), which is arranged on the display part 70;

The display part 70 is provided with the display panel 72 (A1) which has the display surface 72a, and the optical sheet 73 (C) arrange|positioned at the rear side of this display panel 72. As shown in FIG. Utilize front supporting frame body 74 (A2) and rear supporting frame body 75 (A3), carry out forward and backward clamping to the peripheral part of display panel 72, to constitute panel assembly, rear supporting frame body 75 is installed on the peripheral part of supporting body 6 .

The optical sheet 73 is a laminate formed by laminating a thicker diffuser plate for diffusing light emitted from the light emitting diode 1 as a light source and a thinner synthetic resin sheet. Thin synthetic resin sheets include reflective polarizers, prism sheets, and diffuser sheets, among others. The peripheral portion of the optical sheet 73 is clamped by the frame portion 62 of the support body 6 and the rear holding frame body 75 .

The casing 71 has a casing front split body 71a (D1) that covers the front side of the peripheral portion of the display unit 70, and a deep dish-shaped casing rear split body 71b (D2) that covers the peripheral portion and the rear side of the light source device A. The housing 71 is attached to the frame portion 62 of the support body 6 by male screws.

In addition, although not shown, on the other surface 6b of the plate portion 61, a power circuit board connected to the connection electrode portion 22 of the light-emitting diode board 2 through a second connector, and a power supply circuit board connected to the display portion are mounted. A plurality of circuit boards such as a control circuit board for driving and controlling, and a signal processing circuit board for processing video signals displayed on the display surface of the display unit.

The specific structure in which a plurality of fasteners (rivets 8 ) are arranged in a zigzag shape is not limited to Embodiment 4 above. 77 is a plan view of a part of a light source device according to another embodiment of the present invention. In this other embodiment, the distance L between the staggered rivets 8 (B7) in the longitudinal direction of the light-emitting diode substrate 2 is set smaller than that of the above-mentioned embodiment, and the first reflection sheet 4 through which the rivets 8 are inserted The three through holes 43 ( B54 ) are circular holes separated from the through holes 41 ( B53 ).

In Embodiment 4, the two insertion holes 2c and 2d through which the rivet 8 is inserted are provided at both ends of the rectangular light-emitting diode substrate 2 in the longitudinal direction, but the following structure may also be adopted: The two ends of the light emitting diode substrate 2 along the longitudinal direction and the inner parts of the two ends are respectively provided with through holes, so that the adjacent through holes in the direction perpendicular to the rows of the light emitting diode substrate 2 are in a zigzag shape. configuration.

In Embodiment 4 above, a plurality of rectangular light-emitting diode substrates 2 are arranged side by side in a row along the longitudinal direction, and a plurality of rows of light-emitting diode substrates 2 are arranged side by side in a row along the width direction. However, the light-emitting diode substrates The structure of is not limited to Embodiment 4 described above. 78 is an exploded plan view of a part of the light source device according to the second other embodiment of the present invention, and FIG. 79 is a plan view of some components of the light source device according to the second other embodiment. In other embodiments, the size of the rectangular LED substrate 2A ( B3 ) is longer than that of the LED substrate 2 of the above-mentioned embodiment, and is arranged at substantially the same interval as the mounting interval of the LEDs 1 on the LED substrate 2A along the substrate. Eight light emitting diode substrates 2A are arranged side by side in the width direction. The connecting portion 22 ( B32 ) is provided at both ends of each light emitting diode substrate 2A in the longitudinal direction, and the connecting portion 21 ( B31 ) of the connector 5 is not provided.

Six insertion holes 2e1 to 2e6 through which the rivets 8 are inserted are opened at six locations along the longitudinal direction of each light emitting diode substrate 2A. The insertion hole 2e1 at one end of the light emitting diode substrate 2A in the longitudinal direction is the same circular hole as the insertion hole 2c of the above-mentioned embodiment, and the other five insertion holes 2e2 to 2e6 are the same as the insertion hole 2d of the above-mentioned embodiment. Same long hole. On the eight light emitting diode substrates 2A adjacent in the direction in which the light emitting diode substrates 2A are arranged side by side, the respective insertion holes 2e1 to 2e6 are arranged in a zigzag pattern at each of six positions. That is, the eight through-holes 2e1 at one end of the eight light-emitting diode substrates 2A arranged side by side are arranged in a zigzag shape. Similarly, the eight through-holes 2e2, eight through-holes 2e3, and eight The insertion holes 2e4, the eight insertion holes 2e5, and the eight insertion holes 2e6 are arranged in a zigzag shape, respectively. In the reflection sheet 4A, the third insertion holes 43 are provided corresponding to the positions of the insertion holes 2e1 to 2e6, and the second insertion holes 42 corresponding to the connectors 5 are not provided.

In Embodiment 4 described above, the fastener is constituted by the rivet 8 formed of two members, the cylinder member 81 and the shaft member 82, but the fastener may be a rivet formed of a single member. , Screws, bolts and nuts, etc. can also be used to form the fixing parts.

In addition, in the above-mentioned fourth embodiment, the third through-hole 43 having a diameter larger than the diameter of the head portion 82b of the rivet 8 is provided, and the head portion 82b is arranged in the third through-hole 43, thereby allowing the reflection sheet 4 to Thermal expansion and contraction occur, but in addition, the following structure can also be adopted: that is, the diameter of the head portion 82b is set larger than the diameter of the third through hole 43, and the outer peripheral portion of the head portion 82b is aligned with the reflection in the thickness direction. The periphery of the third through-hole 43 of the sheet 4 is spaced and opposed, and the head 82 b can prevent the reflection sheet 4 from being biased in a direction away from the light-emitting diode substrate 2 .

In Embodiment 4 described above, the light source device according to the present invention is applied to the illumination of the display panel of the liquid crystal display device, but it can also be applied to the illumination of the display panel of other light-emitting display devices other than the liquid crystal display device.

Embodiment 5-1

Fig. 80 is a longitudinal sectional view schematically showing the display device.

In the figure, reference numeral 1 is a rectangular display panel (A1) having liquid crystals. The display panel 1 has a structure in which a voltage applied to liquid crystals is controlled to adjust light transmittance to display video. The peripheral portion of the display panel 1 is sandwiched between the front holding frame 2 (A2) and the rear holding frame 3 (A3), and is accommodated in a rectangular frame-shaped front case 4 (D1). The front housing 4 is disposed around the front holding frame 2 and the rear holding frame 3 . The front case 4 has a rectangular opening whose size corresponds to that of the display panel 1 . The rear side of the display panel 1 is provided with a plurality of optical sheets 5 (C) that focus light of light emitting diodes 9 (light emitting elements) described later toward the display panel 1 .

The rear side of the optical sheet 5 is provided with a diffusion plate 6 that uniformly diffuses light from the light emitting diodes 9 ( B1 ). The diffuser plate 6 is supported by the edge portion of a deep dish-shaped support plate 7 (B6). On the front surface of the support plate 7, a plurality of substrates 8 (B3) are arranged side by side, and on the rear surface of the substrate 8, a film-like heat dissipation pattern (not shown) formed by a thermally conductive substance such as metal is formed. ).

On the front surface of the substrate 8, a plurality of light emitting diodes 9, 9, . . . , 9 are mounted. The light emitting diode 9 includes a flat plate portion 9a that is in close contact with the front surface of the substrate 8, and a spindle portion 9b protruding forward from the flat plate portion. Lens 10, 10, . The lens 10 is formed in a thick curved shape protruding forward, and a concave portion 10 a corresponding to the shape of the spindle portion 9 b is formed in the central portion of the rear surface of the lens 10 . The spindle part 9b is accommodated inside the recessed part 10a. At the peripheral portion of the lens 10, three protrusions 10b, 10b, 10b (B22) protruding toward the substrate 8 side are arranged side by side in the circumferential direction, and the front end of the protrusion 10b is mounted on the front surface of the substrate 8 by an adhesive. .

Support stands (not shown) for supporting the deep dish-shaped reflection sheet 11 (B5) are provided on the left and right sides of the support plate 7, respectively. On the bottom surface of the reflection sheet 11, a plurality of sheet holes 11a into which the lenses 10 are inserted are opened (B53). Each lens 10 protrudes to the front side through the sheet hole 11a.

The rear side of the support plate 7 is provided with a deep dish-shaped rear housing 12 ( D2 ). The longitudinal and transverse dimensions of the rear case 12 are substantially the same as those of the front case 4(1), and the edge portions of the rear case 12 and the edge portions of the front case 4 are opposed to each other. On the edge parts of the front housing 4 and the rear housing 12, there are respectively provided with an engaging convex part and an engaging concave part not shown in the figure, so that the engaging concave part and the engaging convex part are engaged to fix the front housing 4 on the Rear shell 12. In addition, between the support plate 7 and the rear case 12, a power circuit board connected to the connection electrode part of the board 8 through a connector, a control circuit board for driving and controlling the display panel 1, and a circuit board for displaying on the display panel 1 are arranged. A plurality of circuit boards such as a signal processing circuit board for processing video signals on the display surface of the display panel 1 .

FIG. 81 is a front view schematically showing the light-emitting diode 9 and the substrate 8 provided with the reflective sheet 11. FIG. 82 is a graph showing the amount of light emitted by the light-emitting diode 9 according to the light emission angle. FIG. 83 is a schematic diagram showing A cross-sectional view of the rivet taken along line IV-IV in FIG. 81 .

On the substrate 8 , a plurality of first through holes 8 a , 8 a , . On the support plate 7, a plurality of second through holes 7a, 7a, ... are opened at positions corresponding to the first through holes 8a, 8a, ..., 8a , 7a (B64). The diameter of the second through hole 7a is substantially the same as the diameter of the first through hole 8a. A hole 11b (B54) having a larger diameter than the first through hole 8a is opened in the reflection sheet 11 at a position corresponding to the first through hole 8a. In addition, as shown in FIG. 81 , an elliptical insertion hole 11 c connected to the sheet hole 11 a and protruding in the longitudinal direction of the substrate 8 is opened at an appropriate position of the reflection sheet 11 . Both the minor axis diameter and the major axis diameter of the insertion hole 11c are larger than the diameter of the head of the rivet 20 described later.

As shown in FIG. 81 , rivets 20 are provided in holes 11 b between the lenses 10 . Rivets 20 (B7) made of, for example, metal or carbon material are inserted into the first through hole 8a and the second through hole 7a corresponding to the hole 11b, and the substrate 8 is fixed to the support plate 7 by the rivet 20. The rivet 20 includes a socket rivet 22 (B71) and an insertion rivet 21 (B72).

The receiving rivet 22 has an annular locking portion 22a (B71a) whose diameter is larger than that of the first through hole 8a, and the outer peripheral portion of the locking portion 22a is located outside the first through hole 8a and inside the hole 11b. , and is locked on the edge portion of the first through hole 8a. On the inner peripheral portion of the locking portion 22a, a plurality of elastic portions 22b are arranged side by side in the circumferential direction. The elastic portion 22b protrudes in the axial direction of the locking portion 22a, and is inserted through the first through hole 8a and the second through hole 7a. The axial dimension of the elastic portion 22b is larger than the axial dimensions of the first through hole 8a and the second through hole 7a, and the protruding end of the elastic portion 22b protrudes from the second through hole 7a in the axial direction.

On the protruding end of the elastic portion 22b, an abutting portion 22c protruding radially inward of the locking portion 22a is integrally provided with the elastic portion 22b, and a gap is provided between the abutting portions 22c, 22c.

The inner side of the contact portion 22c is in contact with a leg portion 21b described later, and the contact of the leg portion 21b bends the elastic portion 22b outward so that the elastic portion 22b contacts the edge portion of the second through hole 7a. Therefore, the substrate 8 and the support plate 7 are sandwiched between the locking portion 22a and the elastic portion 22b front and rear.

The insertion rivet 21 has a head 21a (B72a) having a diameter larger than the hole 11b, and a cylindrical leg 21b at a right angle to the head 21a is provided at the center of the head 21a. A tapered portion 21ba is formed at the tip portion of the leg portion 21b so that the diameter of the leg portion 21b gradually decreases toward the tip. The diameter of the leg portion 21b near the head portion 21a is substantially the same as the inner diameter of the locking portion 22a, which is larger than the dimension between the abutting portions 22c when the leg portion 21b is not inserted. In addition, the edge portion of the head portion 21a protrudes toward the foot portion 21b, and the extension width of the edge portion of the head portion 21a is smaller than the axial dimension of the locking portion 22a, that is, the thickness dimension of the locking portion 22a.

The leg portion 21b inserted into the rivet 21 is inserted into the locking portion 22a, and the front end portion of the leg portion 21b is inserted into the gap between the abutting portions 22c. A tapered portion 21ba is formed at the front end portion of the leg portion 21b, and the gap is opened by inserting the leg portion 21b. The elastic portion 22b is bent outward, and contacts the edge portion of the second through hole 7a.

The head portion 21 a is in contact with the locking portion 22 a, and the head portion 21 a is not in contact with the reflection sheet 11 . A little gap is set between the edge portion of the head 21a protruding to the side of the foot 21b and the reflection sheet 11, when the reflection sheet 11 thermally expands due to the light emitted by the light-emitting diode 9, the reflection sheet 11 is allowed to The heat expands and contracts to prevent the reflective sheet 11 from wrinkling. The reflective sheet 11 is held by the edge portion of the head portion 21a. The support plate 7 and the substrate 8 are clamped with an appropriate pressure by the elastic portion 22 b and the locking portion 22 a so that the substrate 8 is brought into close contact with the support plate 7 .

The thickness dimension of the head 21 a and the locking portion 22 a is shorter than the front and rear dimensions of the LED 9 , and the top of the head 21 a is located behind the top of the spindle portion 9 b of the LED 9 .

As shown in FIG. 81 , rivets 20 are provided in insertion holes 11 c between the lenses 10 . Since both the minor axis diameter and the major axis diameter of the elliptical insertion hole 11c are larger than the diameter of the head (head 21a) of the rivet 20, the head 21a is located inside the insertion hole 11c. As shown in Fig. 83, similar to the rivet 20 disposed in the hole 11b, the support plate 7 and the base plate 8 are clamped with an appropriate pressure by the elastic portion 22b and the locking portion 22a, so that the base plate 8 is tightly attached to the support plate. 7. In addition, the thickness of the head 21 a and the locking portion 22 a is shorter than the front and rear dimensions of the LED 9 , and the top of the head 21 a is located behind the top of the spindle 9 b of the LED 9 .

In the display device according to Embodiment 5-1, the dimension from the substrate 8 to the top of the head 21 a is set to be larger than the dimension from the substrate 8 to the top of the lens 10 according to the diffusion range of light diffused by the lens 10 . It is short so that the diffused light is not blocked by the head 21a. FIG. 82 shows the amount of light emitted by the light emitting diode 9 according to the light emission angle. The measurement position of the amount of light emission is a position separated from the light emitting diode 9 by 20 mm. It can be seen from FIG. 82 that there is no amount of light emission at a light emission angle of 70 degrees or more with respect to the light emission angle zero (vertex of the light emitting diode 9). Therefore, the dimensional ratio from the substrate 8 to the top of the head 21 a of the insert rivet 21 disposed apart from the lens 10 mounted on the front surface of the substrate 8 in the direction of the front surface of the substrate 8 is larger than that from the substrate 8 to the lens 10 . The size up to the top of the display panel 1 is short, so that the light diffused by the lens 10 is prevented from being blocked by the head portion 21a, and the display quality is prevented from being deteriorated due to uneven brightness of the display panel 1 .

In addition, considering that the light irradiated from the light emitting diode 9 is diffused into a wide angle when passing through the lens 10, the dimension from the substrate 8 to the top of the head 21a is larger than the dimension from the substrate 8 to the top of the light emitting diode 9. The size should be short so that the light irradiated from the light emitting diode 9 can be reliably prevented from being blocked by the head portion 21a, and uneven brightness of the display panel 1 can be prevented reliably.

In addition, the substrate 8 is fixed to the support plate 7 by the rivets 20, and the reflection sheet 11 is held by the head portion 21a, so that the reflection sheet 11 can be prevented from peeling off from the support plate 7, and the number of components used in the display device can be reduced. Accordingly, the manufacturing time of the display device can be shortened. In addition, the manufacturing cost of the display device can be reduced. In addition, since a gap is provided between the head portion 21a and the reflective sheet 11, even if the reflective sheet 11 expands and contracts due to sudden thermal changes, the reflective sheet 11 does not wrinkle.

In addition, since the substrate 8 is fixed on the support plate 7 by using the rivet 20, the substrate 8 can be quickly and reliably fixed on the support plate 7, therefore, the manufacturing time of the display device can be shortened, and the manufacturing time of the display device can be reduced. cost.

In addition, by using the light emitting diode 9 as a light emitting element, the amount of heat generation can be suppressed, and flicker control can be easily performed.

In addition, the rivet is not limited to be formed by the insertion rivet 21 and the receiving rivet 22, and the following structure can also be adopted: that is, the head 21a is provided with a plurality of legs 21b along the circumference without using the receiving rivet 22, and a plurality of The front end portions of the legs 21b are respectively provided with clamping parts protruding outward, and the support plate 7 and the base plate 8 are clamped between the clamping parts and the head 21a. In the display device according to the embodiment, the head 21a is located behind the spindle 9b, but the top of the head 21a may be located between the top of the lens 10 and the top of the spindle 9b. In addition, the display device according to the embodiment uses the light-emitting diode 9 as a light-emitting element, but an LD (Laser Diode) or the like may also be used.

(Modification)

Next, a modified example of the display device according to Embodiment 5-1 will be described in detail based on the drawings shown. FIG. 84 is a cross-sectional view schematically showing a modified example of a rivet 20 .

As shown in FIG. 84 , in the modified example, the lens 10 is not provided on the front side of the light emitting diode 9 ( B1 ), and light is directly irradiated from the light emitting diode 9 to the diffusion plate 6 . The irradiation range of the light irradiated from the light emitting diode 9 has a wide angle, and the light irradiated from the light emitting diode 9 is sufficiently diffused by the diffusion plate 6 to be irradiated to the display panel 1 . In a modified example, the thickness of the head 21a and the locking portion 22a is also shorter than the front and rear dimensions of the LED 9 , and the top of the head 21a is also located behind the top of the spindle 9b of the LED 9 .

Therefore, the dimension from the substrate 8 to the top of the head 21a is shorter than the dimension from the substrate 8 to the top of the light emitting diode 9 according to the irradiation range of the light irradiated from the light emitting diode 9, thereby reliably avoiding the The light irradiated by the light emitting diode 9 is blocked by the head portion 21 a, which can reliably prevent uneven brightness of the display panel 1 .

Embodiment 5-2

Fig. 85 is a cross-sectional view schematically showing a screw of the display device.

In this display device, the substrate 8 is fixed to the support plate 7 with screws 30 instead of the rivets 20 (B7). On the support plate 7, a plurality of second through holes 7b, 7b, . . . are opened at positions corresponding to the first through holes 8a, 8a, . ..., 7b. Internal threads are formed inside the second through hole 7b, and the diameter of the second through hole 7b is substantially equal to the diameter of the first through hole 8a. A screw 30 is inserted through the first through hole 8a and screwed into the second through hole 7b.

The screw 30 includes a disc-shaped head portion 30a with a large diameter, and a cylindrical shaft portion (leg portion) 30b protruding from the main part of the head portion 30a. The diameter of the head 30a is slightly larger than the diameter of the hole 11b. The shaft portion 30b has external threads, which are inserted into the washer 31 . The inner diameter of the washer 31 is slightly larger than that of the shaft portion 30b, and is substantially the same as that of the first through hole 8a. With the shaft portion 30b inserted into the washer 31, the shaft portion 30b is inserted into the first through hole 8a from the side of the substrate 8, and screwed into the second through hole 7b. Therefore, the gasket 31 is located between the peripheral portion of the head portion 30a and the edge portion of the first through hole 8a.

The axial dimension of the washer 31 , that is, the thickness of the washer 31 is slightly longer than the thickness of the reflection sheet 11 , as shown in FIG. 85 , there is a slight gap between the head 30 a and the reflection sheet 11 . In addition, the thickness of the spacer 31 and the head 30 a is shorter than the front and rear dimensions of the LED 9 , and the top of the head 30 a is located behind the top of the spindle 9 b of the LED 9 .

In addition, for the hole 11b, since the diameter of the head 30a is slightly larger than the diameter of the hole 11b, the peripheral portion of the head 30a is opposed to the edge of the hole 11b at a slight interval, thereby utilizing the diameter of the head 30a. The reflective sheet 11 is held by the peripheral portion. By screwing the screws 30 together, the substrate 8 is clamped between the washer 31 and the support plate 7 , and is tightly adhered to and fixed to the support plate 7 .

In the display device according to Embodiment 5-2, the dimension from the substrate 8 to the top of the head 30 a is set to be larger than the dimension from the substrate 8 to the top of the lens 10 according to the diffusion range of light diffused by the lens 10 . It is short so that the diffused light is not blocked by the head 30a. Therefore, it is possible to prevent the deterioration of display quality caused by uneven brightness of the display panel 1 .

In addition, the dimension from the substrate 8 to the top of the head 30a is shorter than the dimension from the substrate 8 to the top of the light emitting diode 9 according to the irradiation range of the light irradiated from the light emitting diode 9, thereby reliably avoiding the The light irradiated by the light emitting diode 9 is blocked by the head portion 30 a, which can reliably prevent uneven brightness of the display panel 1 .

Moreover, since the board|substrate 8 is firmly fixed to the support plate 7 with the screw 30, detachment of the board|substrate 8 from the support board 7 can be prevented reliably.

In addition, the irradiation range of the light emitted from the light emitting diode 9 may be widened, and the lens 10 may be detached. In this case, the dimension from the substrate 8 to the top of the head 30a is shorter than the dimension from the substrate 8 to the top of the light emitting diode 9 according to the irradiation range of light irradiated from the light emitting diode 9, so that The light irradiated from the light emitting diode 9 is reliably prevented from being blocked by the head portion 30 a, and uneven brightness of the display panel 1 can be reliably prevented.

Among the configurations of the display device according to Embodiment 5-2, the same configurations as those of the display device according to Embodiment 5-1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

Embodiment 6-1

86 is an enlarged cross-sectional view showing part of the structure of the display device according to the present invention. FIG. 87 is an enlarged cross-sectional view showing part of the structure of the light source unit. FIG. FIG. 89 is a front view showing a structure in which the peripheral portion of the light source unit and the light reflection sheet are omitted. FIG. 90 is a front view showing a structure in which the peripheral portion of the light reflection sheet is omitted. The front view of the structure, Fig. 91A is a longitudinal sectional side view showing the structure of the first shaft part, Fig. 91B is a cross-sectional plan view showing the structure of the first shaft part, and Fig. 92A is a diagram showing the structure of the second shaft part 92B is a cross-sectional plan view showing the structure of the second shaft part, and FIG. 93 is a cross-sectional plan view showing the structure of the third shaft part.

The illustrated display device is a liquid crystal television set including a display unit A, a light source unit (light source device) B, and a housing C (D), in other words, a liquid crystal display device, and the display unit A is approximately rectangular parallelepiped. The front side (one side) has a display surface for displaying TV images, the light source unit (light source device) B is approximately rectangular parallelepiped, and is arranged on the rear side (other side) of the display unit A, and the housing C (D) covers Cover the peripheral part of the display part A and the rear side of the light source part B.

The display unit A includes a display panel 1 (A1) having a display surface, and an optical sheet 2 (C) arranged behind the display panel 1 . The front and rear holding frames 11 ( A2 ) and rear holding frames 12 ( A3 ) sandwich the peripheral portion of the display panel 1 front and rear to form a panel assembly.

The optical sheet 2 is a laminate formed by laminating a thicker diffuser plate that diffuses light emitted from a light emitting diode 3 (B1) as a light source, and a thinner synthetic resin sheet. The thinner synthetic resin sheet includes a reflective polarizer, a prism sheet, a diffusion sheet, and the like.

The light source part B includes: a plurality of light emitting diodes 3, which are arranged side by side in a grid shape as light sources; a plurality of light emitting diode substrates 4 (B3), which are arranged side by side in a grid shape; A plurality of rows, the LED 3 is mounted on one surface 4a; a plurality of connectors 5 (B4), the plurality of connectors 5 (B4) connect adjacent LED substrates 4, 4 to each other; a plurality of lenses 6 (B2), the plurality of lenses 6 (B2) are installed on one surface 4a of the light emitting diode substrate 4, opposite to the top of the light emitting diode 3, so that the light emitted by the light emitting diode 3 is diffused; the light reflection sheet 7 (B5 ), the light reflection sheet 7 (B5) has a hole 73 (B53) for disposing the lens 6 inside, opposite to the one surface 4a and one surface of the connector 5, so that the light diffused by the lens 6 is reflected The supporting body 8 (B6), the supporting body 8 (B6) is supported side by side to the multi-row LED substrate 4; the first shaft body 9 and the second shaft body 10, the first shaft body 9 and the second shaft body 10. Set the position of the light reflection sheet 7 relative to the support body 8; and the third shaft body 20, the third shaft body 20 installs the two ends of the light-emitting diode substrate 4 on the support body 8 for suppressing light The reflective sheet 7 is biased in the thickness direction. The second shaft body 10 and the third shaft body 20 are common parts.

The light-emitting diode substrate 4 is a rectangle having a circuit portion on one surface 4a and insertion holes 4b, 4b (B33, B34) at both ends, and on one surface 8a of a substantially rectangular support body 8, the light-emitting diode substrate 4 is arranged along the length direction and the width direction. A plurality of rows of the light emitting diode substrates 4 are separately arranged side by side, and the two ends of each light emitting diode substrate 4 are fixed to the supporting body 8 by using the third shaft body 20 (B7). The insertion holes 4b, 4b are inserted so as to be movable relative to the insertion holes 4b, 4b. As shown in FIG. 89 , a plurality of light emitting diodes 3 are separately mounted in the longitudinal direction on each one surface 4 a of the light emitting diode substrate 4 , and connecting portions 41 , 41 are provided at both ends of the one surface 4 a in the longitudinal direction.

The light-emitting diode substrates 4 are arranged side by side in a plurality of rows, so that one end in the longitudinal direction faces each other. In such a light-emitting diode substrate 4, the two adjacent connecting parts 41, 41 of the light-emitting diode substrates 4 of each row are connected to each other by a connector 5. To connect, use the second connector (B41) to connect the connection part of the LED substrate 4 on one side of the row direction to the power circuit substrate described later, and short-circuit the connection part 22 of the LED substrate 4 on the other side of the row direction to Connectors are connected.

The support body 8 is formed by forming a metal plate, and has a substantially rectangular flat plate portion 81 (B61), a frame portion 82 (B62) connected to the periphery of the plate portion 81, and an outer surface of the frame portion 82. The four eaves 83 (B63) whose edges are connected are in the shape of a shell. A first position setting hole 84 is opened in the central portion of the plate portion 81, and a second position setting hole 85 is opened on the peripheral side separated from the first position setting hole 84 to the direction along the sheet surface. A plurality of fitting holes 86 are separately opened in the circumferential direction on the portion of the portion 81 corresponding to the insertion hole 4b, and the light-emitting diode substrate 4 is accommodated side by side in the longitudinal direction and the width direction on one surface 8a of the plate portion 81. To support. In addition, a plurality of attachment holes for attaching the peripheral portion of the display unit A are opened in the eaves portion 83 separately in the circumferential direction.

A power circuit substrate is mounted on one side in the longitudinal direction of the other surface of the plate portion 81, and the power circuit substrate is connected to the light-emitting diode substrate 4 through a second connector (B41). A control circuit board for driving and controlling the display unit A. In addition, a signal processing circuit board for processing video signals displayed on the display surface of the display unit A is mounted on a central portion in the longitudinal direction of the other surface of the plate portion 81 .

The light reflection sheet 7 is formed of a synthetic resin sheet having light reflectivity and a substantially rectangular shape corresponding to the display panel 1 and the support body 8, and includes a flat portion 71 (B51) slightly smaller than the plate portion 81, and a The corner frame portion 72 ( B52 ), which is connected to the four sides of the flat portion 71 at the folding line and rises obliquely to the outside with respect to the flat portion 71 , is formed into a shell shape.

A through hole 74 for preventing the light reflection sheet 7 from being misaligned in the direction along the sheet surface with respect to the plate portion 81 is opened in the central part of the flat part 71, and at a position separated from the through hole 74 to the peripheral side, a There is a long hole 75 ( B57 ) for preventing the light reflection sheet 7 from shifting in the circumferential direction with respect to the plate portion 81 . The through hole 74 is a circular hole and is opened at a position corresponding to the first position setting hole 84 . The elongated hole 75 is long in the direction separating from the through hole 74 and narrow in the direction perpendicular to the separating direction, and is opened at a position corresponding to the second position setting hole 85 . The width of the elongated hole 75 is substantially equal to the diameter of the through hole 74 . In addition, a plurality of second holes 76 are opened in a portion of the flat portion 71 corresponding to the fitting hole 86 , one of the second holes 76 is a long hole 75 , and the long hole 75 is connected to the hole 73 .

At the position corresponding to the lens 6 of the flat part 71, a hole 73 (B53) having a diameter slightly larger than the lens 6 is provided. A biasing portion that is biased in the thickness direction due to contact with the connector 5 is provided at a position.

The first shaft body 9 ( B7 ) has a flexible tube 91 ( B71 ) and a pin 92 ( B72 ) fitted into the flexible tube 91 . One end of the flexible cylinder 91 has a eaves portion 91a (B71a), and the other end has a setting shaft portion 91b connected to the eaves portion 91a, a plurality of notches 91c (B71b) extending in the axial direction, and a bulge protruding inwardly. part, the component pieces between the cutouts 91c can be bent radially, and the flexible tube 91 is inserted into the through hole 74 and the first position setting hole 84 . The diameter of the setting shaft portion 91b is slightly smaller than that of the through hole 74, and has a structure in which the setting shaft portion 91b is fitted into the through hole 74 to prevent the light reflection sheet 7 from being misaligned in the direction along the sheet surface. .

The pin 92 adopts the following structure: that is, one end of the pin 92 has a eaves portion 92a (B72a) whose diameter is larger than the eaves 91a of the flexible cylinder 91, and the pin 92 is embedded in the flexible cylinder 91, so that It abuts against the bulge inside the flexible cylinder 91, so that the component pieces between the cutouts 91c are bent radially toward the outside of the first position setting hole 84, so as to prevent the elastic recovery of the component pieces between the cutouts 91c, preventing The pin 92 is detached from the plate portion 81 so that the position setting state of the light reflection sheet 7 can be maintained by the setting shaft portion 91b.

The second shaft body 10 has a flexible cylinder 10a and a pin 10b fitted into the flexible cylinder 10a. One end of the flexible cylinder 10a has a eaves portion 10c, and the other end side has a plurality of slits 10d extending along the axial length direction and a bulge protruding inward. The component pieces between the slits 10d can be bent radially, and the The flexible cylinder 10 a is fitted into the long hole 75 and the second position setting hole 85 . The diameter of the eaves 10c as a position setting part is slightly smaller than the width of the elongated hole 75, and has the following structure: that is, the eaves 10c is inserted into the elongated hole 75, thereby preventing the light reflection sheet 7 from being moved by the first axis. 9 as the center and misalignment occurs along the circumferential direction.

The pin 10b adopts the following structure: that is, one end of the pin 10b has a eaves 10e whose diameter is larger than the eaves 10c of the flexible tube 10a, and the pin 10b is embedded in the flexible tube 10a so that it is compatible with the flexible tube 10a. The bulges on the inside of the flexible cylinder 10a abut against each other, so that the component pieces between the slits 10d are bent radially toward the outside of the second position setting hole 85, so as to prevent the elastic recovery of the component pieces between the slits 10d and prevent the pins from The sub 10b is detached from the plate portion 81 .

The third shaft body 20 has a flexible tube 20a and a pin 20b fitted into the flexible tube 20a. One end of the flexible cylinder 20a has a eaves portion 20c, and the other end side has a plurality of slits 20d extending along the axial direction and a bulge protruding inward. The flexible cylinder 20 a is fitted into the fitting hole 86 . The pin 20b adopts the following structure: that is, one end of the pin 20b has a eaves 20e whose diameter is larger than the eaves 20c and the second hole 76 of the flexible tube 20a, and the pin 20b is embedded in the flexible tube 20a, Therefore, it abuts against the bulge on the inside of the flexible tube 20a, and the component pieces between the notches 20d are bent radially toward the outside of the fitting hole 86, so as to prevent the elastic recovery of the component pieces between the notch 20d and prevent all The pin 20b is detached from the plate portion 81 . In addition, there is a slight gap between the inner surface of the eaves 20e and the sheet surface of the light reflection sheet 7, so that the expansion and contraction of the light reflection sheet 7 to the sheet surface due to thermal expansion can be absorbed. In addition, it has the following structure: That is, deviation of the reflection sheet 7 in the thickness direction with respect to the light emitting diode substrate 4 is suppressed by the eaves 20e.

The housing C has a housing front split body 21 (D1) that covers the front side of the peripheral part of the display part A, and a deep dish-shaped rear split body 22 (D2) that covers the peripheral part and the rear side of the light source part B. The housing C is attached to the frame portion 82 of the support body 8 by male screws.

For the display device having the above-mentioned structure, the support body 8 is placed on the console with its open side facing upward, and on one surface 8a of the plate portion 81 of the support body 8, two adjacent sides along the row direction The block LED substrates 4, 4 are arranged in multiple rows side by side, and the connector 5 is connected to the connecting portion arranged at the adjacent end of each column of the LED substrates 4, 4, and the flexible cylinder of the third shaft body 20 20a is fitted into the fitting hole 86 through the insertion holes 4b, 4b provided at both ends of the light emitting diode substrate 4 of each row.

After loading the light-emitting diode substrates 4 of each row, the light-reflecting sheet 7 is placed on one surface of the light-emitting diode substrate 4 of each row, making them face each other, and the lens 6 is embedded in each hole 73 of the light-reflecting sheet 7, so that The bias portion covers the connector 5 .

Insert the flexible cylinder 91 of the first shaft body 9 into the first position setting hole 84 of the plate portion 81 from the through hole 74 of the light reflection sheet 7, and insert the pin 92 into the flexible cylinder 91, so that the light reflection sheet can be aligned. 7 Set the position in the direction along the sheet surface with respect to the plate portion 81, and insert the flexible tube 10a of the second shaft body 10 into the second position of the plate portion 81 from the long hole 75 of the light reflection sheet 7 Set the hole 85, and insert the pin 10b into the flexible tube 10a, so that the circumferential position of the light reflection sheet 7 relative to the plate portion 81 can be set, and the light reflection sheet 7 can be positioned relative to the long hole 75. to move. In addition, the pin 20b is inserted into the flexible tube 20b of the third shaft body 20 from the second hole 76 of the light reflection sheet 7, so that the light reflection sheet 7 is mounted on the plate portion 81 so that it can move relative to the plate portion 81 to The eaves 20 e suppress deviation of the reflective sheet 7 in the thickness direction with respect to the light emitting diode substrate 4 .

After loading the light reflection sheet 7, the optical sheet 2 is placed on the light reflection sheet 7, the display part A is placed on the optical sheet 2, and the peripheral part of the display part A is fixed with a plurality of male screws. It is attached to the peripheral part of the support body 8, and the case C is attached.

As mentioned above, since the through hole 74, the first shaft body 9, and the first position setting hole 84 are used to set the position of the light reflection sheet 7 along the direction of the sheet surface, and the long hole 75, the second Shaft body 10 and second position setting hole 85 are used to set the position of light reflection sheet 7 along the circumferential direction, so that the long hole 75 part and the installation part installed on the support body 8 can move relatively, therefore, in the light When the reflection sheet 7 thermally expands and the light reflection sheet 7 expands and contracts in the direction along the sheet surface, the expansion and contraction can be absorbed by the long hole 75 and the second hole 76, and the expansion and contraction can be absorbed by the long hole 75 and the second axis. The body 10 prevents the light reflection sheet 7 from being misaligned in the circumferential direction around the first shaft body 9 , thereby ensuring that the light reflection sheet 7 is in a proper position relative to the support body 8 . Therefore, an appropriate positional relationship can be maintained between the lens 6 mounted on the LED substrate 4 and the hole 73 opened on the light reflection sheet 7, the gap between the lens 6 and the hole 73 can be kept uniform, and the The hole edge portion of the hole 73 is shaded so that appropriate brightness characteristics can be maintained.

FIG. 94 is a vertical side view showing another structure of the first shaft portion, and FIG. 95 is a vertical side view showing another structure of the second shaft portion. In the embodiment described above, the first shaft body 9, the second shaft body 10, and the third shaft body 20 are rivets, but in addition, the first shaft body 9, the second shaft body 10, and the third shaft body The shaft body 20 can also be a male screw.

In the case where the first shaft body 9 is a male screw, as shown in FIG. 94, the first shaft body 9 includes a head 9a with a diameter larger than the through hole 74, and a through hole 74 connected to the head 9a with a diameter larger than the through hole 74. A slightly smaller screw portion 9b is required. The screw portion 9b constitutes a setting shaft portion. In this embodiment, the screw portion 9 b is inserted into the through hole 74 and screwed into the first position setting hole 84 , thereby preventing the light reflection sheet 7 from shifting in the direction along the sheet surface.

In the case where the second shaft body 10 is a male screw, as shown in FIG. 95, the second shaft body 10 includes a head 10f whose diameter is larger than the width of the elongated hole 75, connected to the head 10f and whose diameter is larger than the elongated hole 75. 75 and a slightly smaller middle-diameter shaft portion 10g, and a screw portion 10h connected to the middle-diameter shaft portion 10g and having a smaller diameter than the middle-diameter shaft portion 10g. The middle diameter shaft portion 10g constitutes a position setting portion. In this embodiment, the screw portion 10h is inserted through the elongated hole 75 and screwed into the second position setting hole 85, so that the middle diameter shaft portion 10g can be inserted into the elongated hole 75 to prevent the light reflection sheet 7 from moving in the first position. The center of the shaft body 9 is misaligned along the circumferential direction.

In the case where the third shaft body 20 is a male screw, since the third shaft body 20 is the same as the second shaft body 10 shown in FIG. Description and drawings.

Embodiment 6-2

Fig. 96 is a cross-sectional plan view showing another configuration of the misalignment prevention hole portion. In this display device, one of the second holes 76 provided at a position separated from the through hole 74 to the peripheral side is used as the long hole 75, and the long hole 75 is arranged at a position separated from the hole 73 instead of the long hole. 75 is connected to the structure of hole 73.

In this structure, since the rigidity of the flat portion 71 around the elongated hole 75 can be increased, the flat state of the flat portion 71 can be easily maintained even when a load is applied to the edge of the elongated hole 75 . In addition, in the case of Embodiment 6-2, instead of using one of the second holes 76 as the elongated hole 75 , the elongated holes 75 may be separately arranged in the direction from the second hole 76 toward the through hole 74 .

Embodiment 6-3

FIG. 97 is a longitudinal sectional side view showing another structure of the first shaft body 9 and the second shaft body 10 . In this display device, the elongated hole 75 is arranged so as to be continuous with the edge of the through hole 74 , instead of providing the elongated hole 75 at a position separated from the through hole 74 toward the peripheral side.

A second position setting hole 85 is opened around the first position setting hole 84 of the plate portion 81 . A second insertion hole 4 c corresponding to the second position setting hole 85 is opened around one insertion hole 4 b of the light emitting diode substrate 4 .

The eaves portion 92a of the first shaft body 9 has an oblong shape, and the second shaft body 10 is integrally provided at an end portion in the longitudinal direction of the eaves portion 92a. The second shaft body 10 is a pin whose diameter is smaller than the width of the elongated hole 75 and is arranged parallel to the first shaft body 9 .

The elongated hole 75 is long in the direction separated from the center of the through hole 74 and narrow in the direction perpendicular to the separated direction. The width of the long hole 75 is substantially equal to the diameter of the second shaft body 10 .

In this embodiment, since the second shaft body 10 can be inserted through the second position setting hole 85 when the first shaft body 9 is inserted through the first position setting hole 84, it is possible to avoid forgetting to install the second shaft. Body 10. In addition, since the number of steps for assembling the second shaft body 10 can be reduced, the assembly workability can be improved.

Embodiment 6-4

FIG. 98 is a schematic perspective view showing another configuration of the light source device, and FIG. 99 is a front view showing another configuration of the misalignment preventing portion of the light reflection sheet. In this light source device, a through hole 74 is opened in the central part of the flat part 71, and four thinner cornices 77 connected thereto at the fold line 7a are provided on the outer edge of the corner frame part 72 (B52). Elongated holes 78 are opened at both end portions of the eaves 77 , and position setting protrusions 87 inserted into the elongated holes 78 are provided on the eaves 83 at the corners of the support body 8 .

The eaves 77 include long eaves 77a connected to the long sides of the substantially rectangular flat portion 71, and short eaves 77b connected to the short sides of the flat portion 71. The long holes 78 long in the longitudinal direction of the long eaves 77a are provided at both ends of the short eaves 77b, and the long holes 78 long in the longitudinal direction of the short eaves 77b are provided.

The position setting protrusion 87 is smaller than the elongated hole 78 , and the position setting protrusion 87 is formed by cutting out a part of the eaves 83 . The following structure is adopted: that is, a part of the periphery of the position setting protrusion 87 is in contact with the edge of the elongated hole 78 to prevent the light reflection sheet 7 from being misaligned in the circumferential direction, so that the gap between the position setting protrusion 87 and the elongated hole 78 can be utilized. The gap is used to absorb the expansion and contraction of the light reflection sheet 7 due to thermal expansion.

In the present invention, since the long hole 78 is provided on the cornice 77 that is not related to light reflection and is disposed between the peripheral portion of the display unit A and the peripheral portion of the support body 8, it is possible to prevent the light reflection from being caused by light reflection. The elongated hole 78 of the offset hole is lowered, and a light reflection sheet with further improved light reflectivity can be obtained.

In addition, in the embodiment described above, the through-hole 74 is opened in the central portion of the flat portion 71, but otherwise, the through-hole 74 may be opened separately from the central portion of the flat portion 71 toward the peripheral side. The positional relationship between the through hole 74 and the elongated holes 75 and 78 is not particularly limited.

In addition, in the embodiment described above, the displacement prevention holes are long holes, but other than that, as long as the displacement prevention holes can absorb the shrinkage caused by the thermal expansion of the light reflection sheet and pass through the second The shape of the position setting part to engage and prevent the light reflection sheet 7 from shifting in the circumferential direction is sufficient, and is not limited to the elongated hole.

In addition, in the embodiment described above, the third shaft body 20 for fixing the light-emitting diode substrate 4 has a structure that doubles as the second shaft body 10, but in addition, the first shaft body 9, the second shaft body 10. The third shaft body 20 may also be an independent shaft member.

In addition, in the embodiment described above, the first shaft body 9 is used as the first position setting part, and the second shaft body 10 is used as the second position setting part, but otherwise, the first position setting part The second position setting portion may be a shaft member attached to the plate portion 81 or a shaft member attached to the light emitting diode substrate fixed to the plate portion 81 .

Embodiment 7

100 is a cross-sectional view of main parts showing the structure of a light source device according to Embodiment 7, FIG. 101 is a plan view of a part of the light source device, FIG. 102 is a plan view obtained by disassembling a part of the light source device, and FIG. 103 It is a top view of a part of the light source device, FIG. 104 is an enlarged top view of a part of the light source device, FIG. 105 is an enlarged perspective view of a connector, and FIG. 106 schematically shows the structure of the connector 107 is a plan view showing the dimensional relationship of the insertion hole, FIG. 108 is a perspective view showing the structure of the LED substrate on which the lens is mounted, and FIG. 109 is a cross-sectional view showing an example of a fixing member.

The light source device includes: a plurality of light emitting diode substrates 2 (B3), which are separated from each other and arranged side by side, and a plurality of light emitting diodes 1 (B1) are installed on one surface 2a of them; a plurality of lenses 3 (B2), the plurality of lenses 3 (B2) are installed on one surface 2a of the light emitting diode substrate 2, opposite to the top of each light emitting diode 1, so as to diffuse the light emitted by the light emitting diode 1; reflective sheet 4 (B5), the reflective sheet 4 (B5) has a through hole 41 (B53) for disposing the lens 3 inside, and is placed on one surface 2a of the light emitting diode substrate 2 to generate light emitted by the light emitting diode 1. Reflection; a plurality of connectors 5 (B4), the plurality of connectors 5 (B4) connect the adjacent LED substrates 2, 2 to each other; and a support 6 (B6), the support 6 (B6) is located The other surface 2 b side of the diode substrate 2 supports a plurality of light emitting diode substrates 2 .

The light emitting diode substrate 2 ( B3 ) has a circuit portion on one surface 2 a and has a rectangular shape (rectangular shape) with a large ratio of length to width. On each one surface 2 a of the light emitting diode substrate 2 , a plurality of light emitting diodes 1 are mounted at substantially the same intervals in the longitudinal direction and separated from each other. The light emitting diode substrate 2 is a single-sided substrate having a conductive portion only on one side 2a. A plurality of rectangular light-emitting diode substrates 2 are arranged in parallel on one surface 6 a of a substantially rectangular support 6 , with the long sides aligned in the same direction and separated from each other along the long and width directions. In FIG. 102 , the following example is shown: that is, the light emitting diode substrate 2 on which six light emitting diodes 1 are mounted is arranged in the center, and the light emitting diode substrate 2 on which five light emitting diodes 1 are mounted is arranged on both sides. The three LED substrates 2 connected in a row are arranged side by side in 8 rows along the width direction, and the installation intervals of the LEDs 1 on the LED substrates 2 are basically the same. In addition, the light emitting diodes 1 on all the light emitting diode substrates 2 are arranged at substantially the same two-dimensional intervals.

Connection portions 21 , 22 ( B31 , B32 ) are provided at both ends of one surface 2 a of the light emitting diode substrate 2 along the longitudinal direction. Among the three light emitting diode substrates 2 arranged side by side in a row, the connecting portions 21 and 21 of adjacent light emitting diode substrates 2 are connected to each other through the connector 5 . In addition, as will be described later, the connection portion 22 of the light emitting diode substrate 2 located at one end of the column is connected to the power circuit substrate through a connector, and the connection portion 22 of the light emitting diode substrate 2 located at the other end of the column is connected to the short-circuit connector. .

The connector 5 ( B4 ) includes a plug 51 connected to one connection part 21 and a receptacle 52 connected to the other connection part 21 , and the connector 5 ( B4 ) has a substantially rectangular parallelepiped shape. The socket 52 is provided with a plurality of needle electrodes 52a facing the longitudinal direction of the LED substrate 2 , and the plug 51 is provided with a plurality of metal fittings 51a into which the needle electrodes 52a of the socket 52 are embedded. The metal fitting 51a of the plug 51 is connected to one connection portion 21 by solder reflow processing, and the pin electrode 52a of the socket 52 is connected to the other connection portion 21 by solder reflow processing. The plug 51 is mounted on the socket 52, and the pin electrodes 52a of the socket 52 are inserted into the metal fittings 51a of the plug 51, so that two adjacent LED substrates 2 are electrically connected.

The lens 3 (B2) includes a light-transmitting part 31 (B21) and three positioning protrusions 32 (B22). 1. The hemispherical concave portion where the emitted light diffuses to the surroundings. The positioning protrusion 32 (B22) protrudes from the light-transmitting portion 31 facing the light-emitting diode substrate 2 opposite to the one surface 2a, and the lens 3 is opposite to the light-emitting diode substrate 2. For positioning, the front end of the positioning protrusion 32 is attached to the one surface 2a with an adhesive. The light transmitting portion 31 is formed slightly smaller than the through hole 41 of the reflection sheet 4 .

The reflective sheet 4 (B5) is formed by a piece of synthetic resin sheet having light reflectivity and corresponding to the support body 6, which is roughly rectangular. On the positions corresponding to the lens 3, respectively, there are light-transmitting parts with a diameter ratio. 31 is a slightly larger circular through-hole 41 arranged in a grid, and a substantially rectangular second through-hole 42 through which the connector 5 can pass is opened at a position corresponding to the connector 5 .

The support body 6 (B6) is formed by forming a metal plate, and has a substantially rectangular plate-shaped plate portion 61 (B61) and a frame portion 62 (B62) connected to the periphery of the plate portion 61. On one surface 6a of the substrate, the light emitting diode substrates 2 are accommodated and supported along the longitudinal direction and the width direction.

One end and the other end of the rectangular light-emitting diode substrate 2 along the longitudinal direction are provided with insertion holes 2c, 2d (B33, B34) for the insertion of rivets 8 (B7), and the rivets 8 (B7) are used Then, the light emitting diode substrate 2 is supported on the support body 6 . One insertion hole 2c (B33) of the two insertion holes 2c, 2d has a smaller size than the other insertion hole 2d (B34). Specifically, one insertion hole 2c is a circular hole with a diameter of 2c1, and the dimension 2d1 of the other insertion hole 2d along the width direction of the substrate is larger than the diameter 2c1 of the insertion hole 2c by a predetermined dimension (for example, about 0.2 mm to 0.3 mm). An oblong shape that is longer in the direction of the long side of the substrate. Each LED substrate 2 is arranged such that the insertion hole 2c having a small size and the insertion hole 2d having a large size are adjacent to each other at the end portion where the LED substrate 2 is connected.

On the plate portion 61 of the support body 6, a through hole 61a (B64) is provided corresponding to the position of each insertion hole 2c, 2d, and the distance k between the centers of the two insertion holes 2c, 2d is equal to that of each insertion hole. 2c, 2d corresponding to the space between the two through-holes 61a. That is, align the light-emitting diode substrate 2 with the support body 6, so that the hole positions of the smaller insertion hole 2c and the corresponding through hole 61a are consistent. At this time, the corresponding through hole 61a is located in the larger insertion hole Therefore, the positional relationship between the insertion holes 2c and 2d of each light emitting diode substrate 2 and each through hole 61a is determined.

As shown in FIG. 109, the rivet 8 (B7) includes: a cylindrical member 81 (B71) having an outer diameter g1 capable of being inserted through the insertion holes 2c, 2d and the through hole 61a, and a The flange portion 81a (B71a) penetrating through the insertion holes 2c, 2d and the through hole 61a has an inner diameter g3 at the other end smaller than an inner diameter g2 at one end; and a shaft member 82 (B72) having a function of One end of the cylindrical member 81 is inserted into a shaft portion 82a having a larger diameter than the inner diameter g3 of the other end, and a head portion 82b (B82a) that cannot pass through the insertion holes 2c, 2d and the through hole 61a. The barrel member 81 and the shaft member 82 are made of synthetic resin material.

On the reflective sheet 4 (B5), a third through hole 43 (B54) in the shape of a long hole connected to the through hole 41 is opened at a position corresponding to the rivet 8. The third through hole 43 (B54) has a ratio axis The diameter of the head portion 82b of the member 82 is larger.

Next, a procedure for supporting the three light-emitting diode substrates 2 connected in a row on the support body 6 with the rivets 8 will be described. First, after aligning the insertion holes 2c and 2d of the light emitting diode substrates 2 with the through holes 61a of the support body 6, the cylindrical member 81 is inserted from the side of one surface 2a of each light emitting diode substrate 2 through a small insertion hole. The hole 2c and the through hole 61a are formed, and the flange portion 81a is brought into contact with the one surface 2a of the light emitting diode substrate 2 . Next, when the shaft portion 82a of the shaft member 82 is inserted until the head portion 82b contacts the flange portion 81a of the tube member 81, the front end of the tube member 81 is stretched outward by the shaft portion 82a of the shaft member 82. The front end portion of the cylindrical member 81 stretched outward presses the shaft portion 82a of the shaft member 82 inward to hold it, and the front end portion of the cylindrical member 81 cannot be inserted through the through hole 61a of the support body 6, so that Each light emitting diode substrate 2 can be fixed to the support body 6 by using the rivets 8 .

After attaching the rivets 8 to the smaller insertion holes 2c as described above, the rivets 8 are similarly attached to the larger insertion holes 2d, and the LED substrates 2 are fixed to the support body 6 by the rivets 8 . At this time, when the connector 5 is used to connect the adjacent light-emitting diode substrates 2, when the positions of the two substrates deviate from the appropriate position in the substrate width direction, the through hole 61a of the support body 6 is not located in the insertion hole 2d. However, since the size of the insertion hole 2d along the width direction of the substrate is increased, the through hole 61a will not deviate from the range of the insertion hole 2d, so that the rivet 8 can be inserted through the insertion hole 2d and the through hole 61a for installation. .

After the rivets 8 are installed in the insertion holes 2c and 2d of all the light emitting diode substrates 2, the through hole 41 is inserted by the lens 3, the second through hole 42 is inserted by the connector 5, and the third through hole 43 is inserted by each rivet 8. In such a state, the reflective sheet 4 is placed on the light emitting diode substrate 2 so that they face each other.

FIG. 110 is a cross-sectional view showing the structure of a display device including the light source device according to the present invention. The display device includes: a display part 70 (A), which is approximately rectangular parallelepiped and has a display surface 72a on its front side; a light source device A (B), which is arranged on the display part 70;

The display part 70 is provided with the display panel 72 (A1) which has the display surface 72a, and the optical sheet 73 (C) arrange|positioned at the rear side of this display panel 72. As shown in FIG. Utilize front supporting frame body 74 (A2) and rear supporting frame body 75 (A3), carry out forward and backward clamping to the peripheral part of display panel 72, to constitute panel assembly, rear supporting frame body 75 is installed on the peripheral part of supporting body 6 .

The optical sheet 73 is a laminate formed by laminating a thicker diffuser plate for diffusing light emitted from the light emitting diode 1 as a light source and a thinner synthetic resin sheet. Thin synthetic resin sheets include reflective polarizers, prism sheets, and diffuser sheets, among others. The peripheral portion of the optical sheet 73 is clamped by the frame portion 62 of the support body 6 and the rear holding frame body 75 .

The casing 71 (D) has a casing front split body 71a (D1) that covers the front side of the peripheral portion of the display unit 70, and a deep dish-shaped casing rear split body 71b (D2) that covers the peripheral portion and the rear side of the light source device A. ), the housing 71 (D) is mounted on the frame portion 62 of the support body 6 using male screws.

In addition, although illustration is omitted, a power circuit board is mounted on one side in the longitudinal direction of the other surface 6b of the plate portion 61, and the power circuit board is used for connecting the light-emitting diode board 2 through the second connector (B41). The electrode portions 22 are connected to each other, and a control circuit board for driving and controlling the display portion is mounted on the other side portion in the longitudinal direction. In addition, a signal processing circuit board for processing video signals displayed on the display surface of the display unit is mounted on a central portion in the longitudinal direction of the other surface of the plate portion 61 .

In Embodiment 7 described above, the fastener is constituted by the rivet 8 formed of two members, the cylinder member 81 and the shaft member 82, but the fastener may be a rivet formed of a single member. In addition, other than the rivet , Screws, bolts and nuts, etc. can also be used to form the fixing parts.

In addition, in the above-mentioned seventh embodiment, the third through-hole 43 having a diameter larger than the diameter of the head 82b of the rivet 8 is provided, and the head 82b is arranged in the third through-hole 43 to allow the reflection sheet 4 A structure that expands and contracts due to thermal expansion, but in addition, a structure may be adopted in which the diameter of the head portion 82b is set larger than the diameter of the third through hole 43, and the outer peripheral portion of the head portion 82b is formed along the thickness. The direction is separated from and opposed to the periphery of the third through hole 43 of the reflective sheet 4 , thereby preventing the reflective sheet 4 from being biased in a direction away from the light-emitting diode substrate 2 due to the head portion 82 b.

In Embodiment 7, two insertion holes 2c and 2d are provided at both ends of the rectangular light emitting diode substrate 2 in the longitudinal direction, but as shown in FIGS. 111A and 111B , the light emitting diode substrate may Three or more insertion holes 2c, 2d are provided at a plurality of locations in the longitudinal direction of 2 . In FIG. 111A , a case is shown in which the insertion hole 2c having a small size is not provided at the end portion of the light emitting diode substrate 2 in the longitudinal direction, but is provided at the end portion of the light emitting diode substrate 2 in the longitudinal direction. 111B, the following situation is shown: that is, the insertion hole 2c with a smaller size is not provided in the light emitting diode substrate 2. The end portion in the longitudinal direction of the light emitting diode substrate 2 is provided at the inner part of the longitudinal direction of the light emitting diode substrate 2, and the insertion hole 2d with a larger size is provided at the other three ends including the two ends in the longitudinal direction. parts. Although not shown, through holes having a diameter larger than the head portion 82b of the shaft member 82 of the rivet 8 are opened in the reflection sheet 4 corresponding to the positions of the insertion holes 2c and 2d. In the present embodiment, when connecting a plurality of rectangular light-emitting diode substrates 2 in a row, the ends of the light-emitting diode substrates 2 provided with the larger insertion holes 2d are arranged adjacent to each other, so that The misalignment between the light emitting diode substrates 2 is further reliably absorbed by the connector connection.

In Embodiment 7 above, the light source device according to the present invention is applied to the illumination of the display panel of the liquid crystal display device, but it can also be applied to the illumination of the display panel of other light-emitting display devices other than the liquid crystal display device.

Embodiment 8

112 is a cross-sectional view of main parts showing the structure of a light source device according to Embodiment 8, FIG. 113 is a plan view of a part of the light source device, FIG. 114 is a plan view obtained by disassembling a part of the light source device, and FIG. 115 116 is an enlarged plan view of a part of the light source device. FIG. 117 is a perspective view showing the structure of a light-emitting diode substrate on which a lens is mounted. FIG. 118 is a view showing a rivet 119 is a plan view at the line V-V in FIG. 118 , and FIG. 120 is a cross-sectional view showing the positional relationship between the rivet and the lens.

The light source device includes: a plurality of light emitting diode substrates 2 (B3), which are separated from each other and arranged side by side, and a plurality of light emitting diodes 1 (B1) are installed on one surface 2a of them; a plurality of lenses 3 (B2), the plurality of lenses 3 (B2) are installed on one surface 2a of the light emitting diode substrate 2, opposite to the top of each light emitting diode 1, so as to diffuse the light emitted by the light emitting diode 1; reflective sheet 4 (B5), the reflective sheet 4 (B5) has a through hole 41 (B53) for disposing the lens 3 inside, and is placed on one surface 2a of the light emitting diode substrate 2 to generate light emitted by the light emitting diode 1. reflection; and a support body 6 ( B6 ), which is located on the other side 2 b of the light emitting diode substrate 2 and supports a plurality of light emitting diode substrates 2 .

The light emitting diode substrate 2 ( B3 ) has a circuit portion on one surface 2 a and has a rectangular shape (rectangular shape) with a large ratio of length to width. On each one surface 2 a of the light emitting diode substrate 2 , a plurality of light emitting diodes 1 are mounted at substantially the same intervals in the longitudinal direction and separated from each other. The light emitting diode substrate 2 is a single-sided substrate having a conductive portion only on one side 2a. A plurality of rectangular light-emitting diode substrates 2 are arranged in parallel on one surface 6 a of a substantially rectangular support 6 , with the long sides aligned in the same direction and separated from each other along the long and width directions. In FIG. 114 , the following example is shown: that is, the light emitting diode substrate 2 on which six light emitting diodes 1 are mounted is arranged in the center, and the light emitting diode substrate 2 on which five light emitting diodes 1 are mounted is arranged on both sides. The three LED substrates 2 connected in a row are arranged side by side in 8 rows along the width direction, and the installation intervals of the LEDs 1 on the LED substrates 2 are basically the same. Then, the light emitting diodes 1 on all the light emitting diode substrates 2 are arranged at approximately the same two-dimensional intervals.

Connection portions 21 , 22 ( B31 , B32 ) are provided at both ends of one surface 2 a of the light emitting diode substrate 2 along the longitudinal direction. Among the three light emitting diode substrates 2 arranged side by side in a row, the connection portions 21 and 21 of the adjacent light emitting diode substrates 2 are connected to each other by the connector 5 ( B4 ). In addition, as will be described later, the connection portion 22 of the light emitting diode substrate 2 located at one end of the column is connected to the power circuit substrate through a connector, and the connection portion 22 of the light emitting diode substrate 2 located at the other end of the column is connected to the short-circuit connector. .

The lens 3 (B2) includes: a light-transmitting portion 31 (B21), which is disposed separately from one surface 2a of the light-emitting diode substrate 2, opposite to the top of the light-emitting diode 1, and has a The hemispherical recess 31a that diffuses the light emitted by the light emitting diode 1 to the surroundings; The opposite surface 31b of the transparent portion 31 protrudes toward the LED substrate 2 to position the lens 3 relative to the LED substrate 2 .

The reflective sheet 4 (B5) is formed by a piece of synthetic resin sheet having light reflectivity and corresponding to the support body 6, which is roughly rectangular. On the positions corresponding to the lens 3, respectively, there are light-transmitting parts with a diameter ratio. 31 is a slightly larger circular through-hole 41 arranged in a grid, and a substantially rectangular second through-hole 42 through which the connector 5 can be inserted is opened at a position corresponding to the connector 5 . The through-hole 41 is formed slightly larger than the light-transmitting portion 31 of the lens 3 .

The support body 6 (B6) is formed by forming a metal plate, and has a substantially rectangular plate-shaped plate portion 61 (B61) and a frame portion 62 (B62) connected to the periphery of the plate portion 61. On one surface 6a of the substrate, the light emitting diode substrates 2 are accommodated and supported along the longitudinal direction and the width direction.

One end and the other end of the rectangular light-emitting diode substrate 2 along the longitudinal direction are provided with through holes 2c, 2d (B33, B34) for inserting rivets 8 (B7). The light emitting diode substrate 2 is supported on the support body 6 . One of the two through-holes 2c and 2d is a circular hole 2c (B33), and the other through-hole 2d (B34) is an oblong shape elongated in the substrate longitudinal direction. On the plate part 61 of the support body 6, the through-hole 61a is provided corresponding to the position of each through-hole 2c, 2d (B64).

The rivet 8 (B7) includes: a cylindrical member 81 (B71) having an outer diameter g1 capable of being inserted through the through holes 2c and 2d of the light emitting diode substrate 2 and the through hole 61a of the support body 6, and one end thereof is A flange portion 81a (B71a) that cannot pass through the through holes 2c, 2d and the through hole 61a is provided, and the inner diameter g3 at the other end is smaller than the inner diameter g2 at one end; and a shaft member 82 (B72) that B72) One end that can be inserted into the cylindrical member 81 has a diameter larger than the inner diameter g3 of the other end, and one end of the shaft member 82 is provided with a head portion 82a (B72a) that cannot pass through the through holes 2c, 2d and the through hole 61a. The head portion 82a has a disk shape having an annular protrusion protruding toward the shaft member 82 side on the outer peripheral side. The barrel member 81 and the shaft member 82 are made of synthetic resin material.

On the head portion 82a of the rivet 8, on the side opposite to the one surface 2a of the light emitting diode substrate 2, a plurality of grooves 82b (B74) opening toward the outer peripheral portion are provided. Specifically, three grooves 82b radially centered on the central side portion 82 of the head portion 82a connected to the shaft member 82 are provided on the annular convex portion, and the three grooves 82b are substantially 120 degrees from each other. Each groove 82b has a predetermined width.

The bottom of the groove 82b is located on the side closer to the one surface 2a of the LED substrate 2 than the outer peripheral end portion of the surface 31b of the light-transmitting portion 31 of the lens 3 facing the one surface 2a of the LED substrate 2. . 120 shows an example in which the bottom of the groove 82b is located on the side of the one surface 2a, and the distance between the bottom of the groove 82b and the position on the outer peripheral side of the opposite surface 31b of the translucent portion 31 is k. Accordingly, the light emitted from the outer peripheral portion of the translucent portion 31 does not enter the groove 82b, but is reflected by the outer surface of the head portion 82a of the rivet 8, or passes without being reflected to become illumination light.

A position corresponding to the rivet 8 on the reflection sheet 4 is provided with a long-hole-shaped third through hole 43 (B54) connected to the second through hole 42. The diameter to be larger.

Next, a procedure for supporting the three light-emitting diode substrates 2 connected in a row on the support body 6 with the rivets 8 will be described. First, after aligning the positions of the through-holes 2c and 2d of each light-emitting diode substrate 2 with the respective through-holes 61a of the support body 6, the cylindrical member 81 is inserted through the through-holes from the side of one surface 2a of each light-emitting diode substrate 2. 2c and the through hole 61a, and make the flange portion 81a contact the one surface 2a of the light emitting diode substrate 2. Next, when the shaft member 82 is inserted until the head portion 82 a contacts the flange portion 81 a of the tube member 81 , the front end of the tube member 81 is stretched outward by the front end side of the shaft member 82 . Since the front end portion of the cylindrical member 81 stretched outward presses the front end side of the shaft member 82 inwardly to hold it, and the head portion 82a cannot be inserted through the through hole 61a of the support body 6, therefore, the rivet can be used. 8 to fix each light emitting diode substrate 2 on the support body 6 . After attaching the rivets 8 to the through-holes 2 c which are round holes as described above, the rivets 8 are similarly attached to the through-holes 2 d which are elongated holes, so that the light-emitting diode substrates 2 are fixed to the support body 6 by the rivets 8 . .

After the rivets 8 are installed in the through holes 2c and 2d of all the LED substrates 2, the through holes 41 are inserted by the lens 3, the second through holes 42 are inserted by the connectors 5, and the third through holes 43 are inserted by the rivets 8. In such a state, the reflection sheet 4 is placed on the light emitting diode substrate 2 so that they face each other, and the light source device is completed.

Next, a procedure for releasing the state in which each light emitting diode substrate 2 is fixed to the support body 6 by the rivets 8 will be described. For example, as shown in FIG. 116, since one groove 82b among the three grooves 82b provided on the head 82a is located on the side adjacent to the lens 3, the lens 3 becomes an obstacle, and a screwdriver cannot be inserted into the groove. 82b. However, for the two grooves 82b at a position of 120 degrees to this groove 82b, the lens 3 will not become an obstacle. Therefore, if a screwdriver is inserted into any one of the two grooves 82b and the head is forcibly When the portion 82a moves to the side away from the light emitting diode substrate 2, the front end of the tube member 81 stretched outward will return to its original diameter, and the tube member 81 will be inserted through the through hole 61a of the support body 6 and the light emitting diode substrate. 2 through-holes 2c, 2d, thereby releasing the fixed state between the light-emitting diode substrate 2 and the support body 6.

121 is a cross-sectional view showing the configuration of a display device including the light source device of Embodiment 8. FIG. The display device includes: a display part 70 (A), which is approximately rectangular parallelepiped and has a display surface 72a on its front side; a light source device A (B), which is arranged on the display part 70;

The display part 70 is provided with the display panel 72 (A1) which has the display surface 72a, and the optical sheet 73 (C) arrange|positioned at the rear side of this display panel 72. As shown in FIG. Utilize front supporting frame body 74 (A2) and rear supporting frame body 75 (A3), carry out forward and backward clamping to the peripheral part of display panel 72, to constitute panel assembly, rear supporting frame body 75 is installed on the peripheral part of supporting body 6 .

The optical sheet 73 is a laminate formed by laminating a thicker diffuser plate for diffusing light emitted from the light emitting diode 1 as a light source and a thinner synthetic resin sheet. Typical synthetic resin sheets include reflective polarizers, prism sheets, and diffusion sheets. The peripheral portion of the optical sheet 73 is clamped by the frame portion 62 of the support body 6 and the rear holding frame body 75 .

The casing 71 (D) has a casing front split body 71a (D1) that covers the front side of the peripheral portion of the display unit 70, and a deep dish-shaped casing rear split body 71b (D2) that covers the peripheral portion and the rear side of the light source device A. ), the housing 71 (D) is mounted on the frame portion 62 of the support body 6 using male screws.

In addition, although not shown in the figure, a power circuit board is mounted on one side in the longitudinal direction of the other surface 6 b of the plate part 61 , and the power circuit board is connected to the electrode part 22 for connection of the light emitting diode board 2 via a connector ( B41 ). connected to each other, and a control circuit board for driving and controlling the display unit is mounted on the other side in the longitudinal direction. In addition, a signal processing circuit board for processing video signals displayed on the display surface of the display unit is mounted on the central portion in the longitudinal direction of the other surface 6b of the plate portion 61 .

Next, other embodiments of the rivet 8 will be described. 122 is a plan view showing the back side of the head of the rivet in another light source device according to Embodiment 8, and FIG. 123 is an enlarged plan view of a part of the other light source device. In this other embodiment, two grooves 82c are provided on the annular protrusion of the head 82a of the rivet 8 (B7). The parts 82 are radially centered at approximately 90 degrees to each other. As shown in FIG. 123, one of the two grooves 82c (B74) is located on the side adjacent to the lens 3, and the lens 3 (B2) will become an obstacle to insert a screwdriver into this groove 82c. In this case, since the lens 3 does not become an obstacle to the other groove 82c, a screwdriver can also be inserted into the other groove 82c.

Next, another second embodiment of the rivet 8 will be described. 124 is a plan view showing the back side of the head of the rivet in the second other light source device according to the eighth embodiment. In this second other embodiment, two grooves 82d are provided on the annular protrusion of the head 82a of the rivet 8 (B7). The central side portion 82 is radially centered at approximately 60 degrees to each other. Like the other embodiments described above, one of the two grooves 82d is located on the side adjacent to the lens 3, so that a screwdriver cannot be inserted into the groove 82d. , but even in this case, a screwdriver can be inserted into the other slot 82d. In addition, the angle formed by the plurality of grooves may be any angle other than 120 degrees, 90 degrees, and 60 degrees. In this case, in order to prevent a plurality of grooves from becoming incapable of inserting a screwdriver at the same time, at least one of the plurality of grooves must be located away from the central side of the head 82a connected to the shaft portion 82 to connect the other grooves. position of the straight line.

In Embodiment 8 above, the third through-hole 43 having a diameter larger than the diameter of the head 82a of the rivet 8 is provided, and the head 82a is disposed in the third through-hole 43 to allow the reflection sheet 4 to shrink due to thermal expansion. expansion and contraction occurs, but in addition, the following structure can also be adopted: that is, the diameter of the head 82a is set larger than the diameter of the third through hole 43, and the outer peripheral portion of the head 82a is aligned with the reflection sheet 4 in the thickness direction. The periphery of the third through hole 43 is spaced and opposite, thereby preventing the reflection sheet 4 from being biased in the direction of being separated from the light emitting diode substrate 2 due to the head portion 82b.

In addition, in the eighth embodiment above, the light source device according to the present invention is applied to the illumination of the display panel of the liquid crystal display device, but it can also be applied to the illumination of the display panel of other light-emitting display devices other than the liquid crystal display device. .

Embodiment 9

125 is a longitudinal cross-sectional view showing a partial configuration of a display device 7 including the light source device 1 according to the embodiment of the present invention. The left-right direction in FIG. 125 is the same as the front-rear direction of the display device 7 , and further the same as the front-rear direction of the light source device 1 .

126 and 127A are horizontal cross-sectional views and front views showing the structure of the connection portion between the circuit boards 2 and 2 included in the light source device 1, and FIG. Front view of the relationship between components 6. The up-down direction in FIG. 126 is the same as the front-back direction of the display device 7 , and further the same as the front-back direction of the light source device 1 (B). In addition, FIG. 126 corresponds to a cross-sectional view taken along line VI-VI in FIG. 127A.

128 is a perspective view schematically showing a state in which circuit boards 2 , 2 , .

As shown in FIG. 125 , the display device 7 includes a display unit 70 (A), a housing 71 (D), a front housing 72 ( A2 ), a rear housing 73 ( A3 ), and a light source device 1 (B).

Next, first, the configuration of the light source device 1 will be described.

As shown in FIGS. 125 to 128 , the light source device 1 (B) includes a plurality of circuit boards 2, 2, . . . (B3), a reflection sheet 4 (B5), and a mounting member 6 (B6).

Each circuit board 2 (B3) is in the shape of a rectangular plate relatively elongated in the left-right direction, and a first connection part (for example, a convex connection part) 21 is installed on the right end of the front 2a, and a The second connecting portion (in this case, a female connecting portion) 22 . That is, the direction in which the first connection portion 21 and the second connection portion 22 separate is the left-right direction.

In addition, on the upper surface 2a between the first connection part 21 (B31) and the second connection part 22 (B32) on the circuit board 2, a plurality of (in FIG. are five) light emitting parts 23, 23, ... (B1).

In addition, on the circuit board 2, a driver (not shown) for driving the light emitting units 23, 23, . . . is mounted.

Here, a light emitting diode is used for each light emitting unit 23 ( B1 ).

In addition, on the front surface 2a of each circuit board 2, a plurality of lenses 24, 24, . Each lens 24 has a circular shape and is arranged to face the top of the light emitting unit 23 . The lens 24 diffuses the light emitted by the light emitting unit 23 .

The mounting member 6 ( B6 ) is formed by forming a metal plate into a rectangular plate shape, and has a rectangular flat plate portion 61 ( B61 ) and a frame portion 62 ( B62 ) connected to the periphery of the plate portion 61 . The long-side direction (or short-side direction) of the flat plate portion 61 is the same as the left-right direction (or up-down direction).

On the front surface 6a of the flat plate portion 61, circuit boards 2, 2, . . . are mounted side by side in a matrix. As a result, the light emitting units 23, 23, ... (B1) are arranged in a matrix. In FIG. 128 , a state in which two circuit boards 2, 2, .

In addition, a power supply circuit board ( B10 a ), not shown, which supplies power to the drivers of the circuit boards 2 , 2 , . . . In addition, a control circuit board for driving and controlling the display unit 70 is mounted on the rear right end portion of the mounting member 6 .

On the circuit boards 2, 2 adjacent in the left-right direction, the first connection part 21 arranged on the left side of the circuit board 2 passes through the first connector 25 ( B4) is electrically connected to the second connection portion 22 of the circuit board 2 arranged on the right side.

In addition, the second connecting parts 22, 22, ... mounted on the circuit boards 2, 2, ... at the leftmost end of the flat plate part 61 are respectively connected via second connectors (not shown). B41), electrically connected to the power circuit substrate.

In addition, the second connection parts 22, 22, . . . mounted on the rightmost circuit boards 2, 2, . . .

The reflective sheet 4 ( B5 ) is formed of a synthetic resin sheet, and at least the front surface of the reflective sheet 4 has high reflectivity for reflecting the light emitted by the light emitting parts 23 , 23 , . . . . In addition, the reflection sheet 4 has a rectangular shape corresponding to the shape of the attachment member 6 and is attached to the front side of the attachment member 6 .

Circular through holes 41 , 41 , . . . are formed at positions corresponding to the arrangement positions of the lenses 24 , 24 , . In addition, rectangular through-holes 42 , 42 , . . . are formed at positions corresponding to the positions where the first connectors 25 , 25 , .

Lenses 24, 24, ... are disposed inside the through holes 41, 41, ..., and first connectors are disposed inside the through holes 42, 42, ... 25 , 25 , . . . In such a state, reflective sheets 4 are laminated on the front surfaces 2a, 2a, . . . of the circuit boards 2, 2, . . .

Next, the configuration of the display device 7 shown in FIG. 125 will be described.

The light source device 1 (B) is used to illuminate the display unit 70 (A), and is disposed on the rear side of the display unit 70 .

The display unit 70 has a rectangular shape and includes a display panel 701 (A1) and an optical sheet 702 (C).

The display panel 701 is, for example, a liquid crystal display panel, and the front surface of the display panel 701 constitutes a display surface 7 a on which an image is displayed.

The optical sheet 702 is opposite to the back of the display panel 701, and is disposed between the display panel 701 and the lenses 24, 24, . . . diffusion. The optical sheet 702 is a laminate formed by laminating a thick diffuser plate and a thin synthetic resin sheet formed of a reflective polarizer, a prism sheet, or a diffuser sheet.

Regarding the display panel 701 , the peripheral portion of the display panel 701 is sandwiched front and rear by the front frame 72 and the rear frame 73 , thereby constituting a panel assembly.

The rear frame 73 is attached to the frame portion 62 of the mounting member 6 , and the optical sheet 702 is sandwiched between the rear frame 73 and the frame 62 front and rear.

The housing 71(D) accommodates the panel assembly, the optical sheet 702, and the light source device 1 in a state where the display surface 7a is exposed through the front opening and the portion other than the display surface 7a is covered.

A signal processing circuit board for processing video signals displayed on the display surface of the display panel 701 is mounted on the left-right central portion of the rear surface of the flat plate portion 61 of the mounting member 6 ( B6 ).

In the case of manufacturing the light source device 1 of the display device 7 as described above, the manufacturer mounts the circuit boards 2, 2, . superior. When installing each circuit board 2, marks 31, 32, 33 (B38, B35) as shown in FIGS. The orientation of the left and right directions (hereinafter simply referred to as the orientation of the circuit board 2).

The marks 31 , 32 , and 33 are recessed marks indicating the orientation of the circuit board 2 .

Markers 31 and 32 ( B38 ) are arranged near the first connection portion 21 . The mark 31 is a rectangular cut-out portion penetrating from the front surface 2 a to the rear surface of the circuit board 2 at the upper end of the circuit board 2 . Likewise, the mark 32 is a rectangular cut-out portion at the lower end portion of the circuit board 2 .

The marker 33 ( B35 ) is arranged near the second connection portion 22 . The mark 33 is a circular hole penetrating from the front surface 2 a to the rear surface of the circuit board 2 in the vertical center portion of the circuit board 2 .

The inner diameter of the marker 33 is larger than the inner dimensions of the markers 31 and 32 .

The above-mentioned marks 31, 32 and marks 33 are respectively formed on the right end portion and the left end portion of the circuit board 2 (in other words, one side and the other side in the left-right direction of the circuit board 2), and the number of them , size, and shape vary.

Therefore, the operator can easily and accurately determine that the side of the circuit board 2 on which the marks 31 and 32 are formed is the right side and that the side of the circuit board 2 on which the mark 33 is formed is on the left side.

Furthermore, markings 31, 32 and marking 33 may also have the same size and/or shape. In addition, when the size and/or shape are different, the number of marks formed on the right side of the circuit board 2 may be the same as the number of marks formed on the left side.

On the other hand, marks 51 , 52 , and 53 ( B69 b , B68 ) are formed for each mounting position of the circuit board 2 on the mounting member 6 ( B6 ).

The marks 51 , 52 , and 53 are protruding marks indicating the mounting positions of the circuit board 2 , and the marks 51 , 52 , and 53 protrude from the front surface 6 a of the flat plate portion 61 . The marks 51, 52, and 53 may be integrally formed on the flat plate portion 61, or marks formed by fixing a member provided separately from the mounting member 6 to the front surface 6a.

The markers 51 and 52 ( B69b ) are arranged near the arrangement position of the first connection part 21 . The marker 53 is placed near the position where the second connection portion 22 is placed. The spacing distance between the markers 51 , 52 , 53 corresponds to the spacing distance between the markings 31 , 32 , 33 .

The mark 51 (or mark 52 ) is in the shape of a quadrangular prism, and the mark 51 (or mark 52 ) is embedded in the mark 31 (or mark 32 ) to engage with it. The mark 53 is cylindrical, and the mark 53 is inserted into the mark 33 to engage with it. That is, the marks 51, 52, 53 have the number, size, and shape corresponding to the marks 31, 32, 33 to be engaged.

The operator can avoid misjudging the direction of the circuit board 2 by looking at the marks 31 , 32 , and 33 and touching the marks 31 , 32 , 33 with his fingers. In addition, by observing the marks 51, 52, 53 directly, or observing the marks 51, 52, 53 through the marks 31, 32, 33, and making the marks 51, 52, 53 contact the fingers or the circuit board 2, it is easy and correct The mounting position of the circuit board 2 can be accurately grasped.

Furthermore, the operator can easily, accurately and uniquely position the circuit board 2 by bringing the circuit board 2 into contact with the mounting member 6 to embed the markings 51 , 52 , 53 into the marks 31 , 32 , 33 .

Therefore, the operator can mount the circuit board 2 arranged at the correct position in the correct direction on the mounting member 6 . In this case, the operator fixes the circuit board 2 to the flat plate portion 61 using, for example, a plurality of rivets ( B7 ) not shown.

In this case, it is possible to prevent the circuit board 2 from being mounted upside down by mistake. This is because the numbers, sizes, and shapes of the marks 31 , 32 , 33 and the marks 51 , 52 , 53 on the left and right sides of the circuit board 2 are different from each other.

In addition, in the case where the mark 33 and the mark 53 are not formed, it is also possible to indicate the direction of the circuit board 2 by making the outer edge shapes of the right end part and the left end part of the circuit board 2 different from each other, and regard this as the mark 31, 32. In this case, the operator can easily and accurately determine that the side of the circuit board 2 on which the marks 31 and 32 are formed is the right side and the side of the circuit board 2 on which the marks 31 and 32 are not formed is the left side.

In addition, the operator can easily, accurately and uniquely position the circuit board 2 by bringing the circuit board 2 into contact with the flat plate portion 61 to fit the marks 51 , 52 into the marks 31 , 32 .

In Embodiment 9, a structure in which a plurality of marks and the same number of marks are formed on the circuit board 2 and the mounting member 6 was exemplified, but the present invention is not limited thereto. For example, only one of the marks 31, 32, and 33, and a mark corresponding to any one of the marks 51, 52, and 53 may be formed. In this case, the direction of the circuit board 2 can be easily and accurately judged, and the circuit board 2 can be positioned.

The mark formed on the circuit board 2 may be used only for confirming the direction of the circuit board 2 and cannot be used for positioning. In this case, it is not necessary to form a mark to be engaged with the mark on the attachment member 6 . In addition, the markings may also be convex. Alternatively, the mark may also adopt a structure in which the corner of the right end of the circuit board 2 is formed into a right-angle shape and the corner of the right end is formed into an arc shape, or unevenness is formed on the right end surface of the circuit board 2 so that A structure in which the left end surface is formed smoothly, etc.

In the manufacturing operation of the light source device 1 as described above, and further in the manufacturing operation of the display device 7 , the efficiency of the mounting operation of the circuit substrates 2 , 2 , . . . is improved.

However, the circuit board 2 may be positioned by printing positioning marks on the circuit board 2 and the mounting member 6 respectively. However, in this case, if the mark printed on the mounting member 6 is covered by the circuit board 2 to be installed, it is necessary to separate the circuit board 2 from the mounting position one by one to observe whether there is any mark printed on the mounting member 6. The logo and/or the printing position of the logo, etc.

That is, it is more advantageous to form the convex marks 51, 52, 53 on the attachment member 6 so that the presence and/or formation position thereof can be easily grasped by touch.

Generally, the colors of the circuit board 2, the mounting member 6, and the first connector 25, etc. are colors (such as white) that can reflect the light emitted by the light emitting parts 23, 23, . . . Absorbs the color (for example, cream) of the light emitted by the light emitting parts 23, 23, . . .

The colors of the peripheral portions of the marks 31, 32, 33 and the marks 51, 52, 53 in this embodiment are the same as those of the circuit board 2 and the mounting member 6, but in order to improve their respective visibility, the marks 31, 32, The color of the peripheral portion of 33 and/or the front end portion of the marks 51 , 52 , 53 and the like may be different from the colors of the circuit board 2 and the mounting member 6 . However, the color is limited to a color that can reflect the light emitted by the light emitting parts 23, 23, ... or is not easy to absorb the light emitted by the light emitting parts 23, 23, .... In addition, when the marks 31 , 32 , 33 and the marks 51 , 52 , 53 are arranged at positions hidden by the reflective sheet 4 , these colors do not need to be limited.

In addition, in Embodiment 9, the circuit boards 2, 2, . . . It is arranged that the pitch dimension on the central side in the parallel arrangement direction is made short, and the pitch dimension on both sides in the parallel arrangement direction is made long.

It should be considered that Embodiment 9 disclosed here is illustrative in all respects and not restrictive. The scope of the present invention does not only have the above-mentioned meanings, but also includes the meanings equivalent to the scope of the claims and all modifications within the scope of the claims. For example, the orientation of the circuit board 2 is not limited to the orientation in the left-right direction, but may be an orientation in the up-down direction. That is, the first connection parts 21 and 22 may be configured to be spaced apart in the vertical direction.

In addition, components not disclosed in the ninth embodiment may be included in the light source device 1 or the display device 7 as long as the effects of the present invention are obtained.

Embodiment 10

Fig. 129 is a plan view of the lighting device according to the present invention. The illustrated illuminating device is configured as a backlight device disposed behind a liquid crystal display panel for uniformly irradiating light over the entire surface of the liquid crystal display panel, and has a rectangular plane corresponding to the liquid crystal display panel as an object to be irradiated. Shape comprises the backlight base 1 (B6) that is shaped as a shallow bottom box, on the entire surface of the base plate 10 (B61) inside this backlight base 1, a plurality of LEDs (light emitting diodes) 2 as light sources are arranged vertically and horizontally. 2...(B1).

As shown in Figure 129, LED2, 2... (B1) is installed on the LED substrate 20, 20... (B3) in units of multiple (5 or 8 in the figure). )superior. The LED board 20 ( B3 ) has a rectangular shape with a small width and a long dimension, and a plurality of LEDs 2 , 2 .

The configuration of LED2, 2... on the bottom plate 10 of the backlight base 1 is shown in Figure 129 for example, by combining the LED substrate 20 with five LED2, 2... and the LED substrate 20 with eight The LED substrates 20 of LED2, 2... are arranged in the longitudinal direction, and are arranged at equal intervals in a plurality of rows (nine rows in the figure). In addition, the number of LED substrates 20 , 20 . In addition, the number of LED2, 2... mounted on each LED board|substrate 20 is not limited to five or eight shown in figure, and can be set to an appropriate number.

Fig. 130 is a plan view of the backlight chassis 1, showing the state before mounting the LED substrates 20, 20, . . . . As shown in the figure, on the bottom plate 10 of the backlight chassis 1, a plurality of fixing holes 11, 11... (B64), positioning holes 12, 12... .(B67), and component mounting holes 13, 13...(B66).

The fixing holes 11, 11... (B64) are holes for fixing the LED substrates 20, 20..., corresponding to the LED substrates 20, 20... shown in Fig. 129 The configuration of the bottom plate 10 is a group of four fixing holes arranged along the length direction of the bottom plate 10, and nine columns of fixing holes are arranged at equal intervals along the width direction of the bottom plate 10. In FIG. 130 , the positions of the LED substrates 20 , 20 . . . are indicated by dashed-two dotted lines. The four fixing holes 11, 11... of each row are located at the central part of the width direction of the two LED substrates 20, 20 on the same row, and are respectively located at both ends of the LED substrates 20, 20... near the Ministry.

When manufacturing the backlight chassis 1 by press molding, the positioning holes 12, 12, ... (B67) are engaged with protrusions provided in the molding die to position the raw material plate relative to the die. , For this purpose, positioning holes 12, 12... (B67) are provided. In the figure, three positioning holes 12, 12, . . . are formed on the surface of the bottom plate 10. In order to perform positioning within the plane of the mold, more than three positioning holes 12, 12... are formed.

Parts mounting holes 13, 13... (B66) are provided for installing cooling fans, power circuits, various connection cables, etc., as well as components of the backlight device and the liquid crystal display device using the backlight device , These component mounting holes 13, 13... respectively penetrate the bottom of the recesses 14, 14... formed by recessing the corresponding positions on the bottom plate 10 toward the back side. The number and arrangement of component mounting holes 13 , 13 . . . can be appropriately set in accordance with the number and positions of component components to be mounted. In the drawing, four component mounting holes 13 , 13 . . . are randomly arranged in the plane of the bottom plate 10 .

In the lighting device according to the present invention, as described above, the positioning holes 12, 12... and component mounting holes 13, 13... Two fixed holes 11,11 are connected on the straight line, so that they are located between these fixed holes 11,11.

FIG. 131 is a perspective view showing the appearance of the LED substrate 20 . FIG. 132 is an enlarged cross-sectional view along line XII-XII of FIG. 129 showing the mounting portion of the LED substrate 20 , and FIG. 133 is also a cross-sectional view along line XIII-XIII of FIG. 129 .

As shown in these figures, the upper parts of the LEDs 2, 2, . . . mounted on the LED board 20 are covered by lenses 3, 3, . . The lens 3 has a circular planar shape as shown in FIG. 131 , and is a convex lens having a cross-sectional shape in which one surface is flat and the other surface is curved convexly, as shown in FIGS. 132 and 133 . A concave portion 30 ( B21 ) is provided at the center of one flat surface of the lens 3 , and a plurality of supporting legs 31 , 31 . As shown in Fig. 132 and Fig. 133, in the lens 3 adopting such a structure, the flat surface faces downward, and the LED 2 is accommodated in the central concave portion 30 to position it, and the three supporting legs 31, 31.. . . . by bonding to the LED substrate 20 respectively, so that the lens 3 is fixed and supported at a position separated from the surface of the LED substrate 20 by an appropriate length.

As shown in FIG. 131 , terminal portions 22 , 23 ( B31 , B32 ) for external connection are provided at both end portions of the LED board 20 . In addition, in the vicinity of both ends of the LED substrate 20, specifically between the LEDs 2, 2 at both ends and the LEDs 2, 2 adjacent to them, there are provided through holes 21, 21, 21 (B33, B34). These through holes 21 , 21 correspond to the positions of the fixing holes 11 , 11 formed in the bottom plate 10 of the backlight chassis 1 as described above. Arrange the LED substrates 20, 20... on the base plate 10, make the positions of the through holes 21, 21 coincide with the positions of the fixing holes 11, 11, as shown in FIG. 129, place the substrate holder 6 (B7 ) are inserted into the matching parts of the through holes 21 and the fixing holes 11, thereby fixing the LED substrates 20, 20, . . . to the backlight chassis 1 .

As shown in FIG. 132, the substrate holder 6 (B7) includes a fixing claw 61 protruding from one surface of a disc-shaped pressing plate 60, and the fixing claw 61 is passed through the through hole 21 of the LED substrate 20 and the opening of the bottom plate 10. The fixing hole 11 is engaged with the periphery of the back side of the fixing hole 11 , and the LED board 20 is clamped and fixed between the pressing plate 60 and the support plate 1 . In addition, the sandwiching is performed through the reflective sheet 5 provided to cover the entire surface of the bottom plate 10 . The reflective sheet 5 (B5) is a resin sheet having excellent light reflectivity such as polycarbonate. The upper surface of the LED substrate 20 is also covered with a reflective sheet 5, and the lens 3 (B2) covering the mounting position of the LED 2 is exposed to the reflective sheet through each through-hole 51 (B53) formed at a corresponding position of the reflective sheet 5. 5 surfaces. In addition, in FIG. 129 , illustration of the reflection sheet 5 is omitted.

In addition, the substrate holder 6 includes a support protrusion 62 ( B83 ) vertically provided on the other face of the pressing plate 60 . The support protrusions 62 are provided to support the diffusion plate facing the bottom plate 10 of the backlight chassis 1 from the back as will be described later. In addition to the structure in which all the substrate holders 6 have the support protrusions 62 , a structure in which some of the substrate holders 6 have the support protrusions 62 may also be employed.

As shown in FIG. 129 , connectors 4 ( B4 ) are used to connect the respective terminal portions 22 and 22 located at opposite positions, so that the two LED substrates 20 , 20 interconnected. The terminal portions 23, 23 at the other end are used to connect to an external power source, and the LEDs 2, 2, . . . mounted on the LED substrates 20, 20, . Utilize the multiplied effect of the diffusion caused by each lens 3, 3... and the reflection caused by the reflection sheet 5, so that the light emission of each LED2, 2... The in-plane dispersion of the bottom plate 10 is uniform, and the radiation is irradiated onto the object to be irradiated which is arranged opposite to the bottom plate 10 .

In the illuminating device involved in the present invention, on the base plate 10 of the backlight base 1, there are positioning holes 12, 12... (B67) and component mounting holes 13, 13 that pass through the base plate 10 in front and back. ...(B66). These positioning holes 12, 12... and component mounting holes 13, 13... have the above-mentioned positions with respect to the fixing holes 11, 11... for fixing the LED substrate 20 relationship, these positioning holes 12, 12... and component mounting holes 13, 13... are located in the LED substrates that are installed in these fixing holes 11, 11... as described above 20, 20... The blocked state. In addition, the component mounting holes 13, 13... are provided inside the recesses 14, 14... which are formed by recessing the bottom plate 10, but the LED substrates 20, 20... All these recesses 14, 14... are blocked.

Therefore, in the state of use, it is impossible for dust to enter the inside of the backlight base 1 through the positioning holes 12, 12... and component mounting holes 13, 13... Dust adheres and accumulates on the surface of LED2, 2... and lens 3, 3..., and the surface of reflective sheet 5, resulting in uneven irradiation light, insufficient illuminance of irradiation light, etc. question. In addition, it is also possible to prevent LED2, 2... . . . formed on the LED substrate 20, 20... .. has an electrical failure in the drive circuit.

In addition, the light emitted by the LEDs 2, 2, ... will not pass through the positioning holes 12, 12, ... and components installed The light leaks to the outside through holes 13, 13, .

When designing the backlight base 1, properly align the positioning holes 12, 12... and component mounting holes 13, 13... with respect to the LED substrates 20, 20... The fixing holes 11, 11... of . 13, 13....

As shown in Embodiment 10, when using a rectangular LED substrate 20 (B3) and using the fixing holes 11, 11 near both ends to fix the LED substrate 20 to the base plate 10, the positioning holes 12 and parts The mounting hole 13 is formed on the straight line connecting these fixing holes 11, 11, so that they are located between the two fixing holes 11, 11, so that the positioning hole 12 and the component mounting hole 13 can be sealed reliably. The LED substrate 20 has appropriate elasticity, and only by using the substrate holder 6 to fix the vicinity of both ends, the LED substrate 20 can be tightly attached to the base plate 10, thereby reliably blocking the positioning holes 12, 12. ...... and component mounting holes 13, 13..., but in order to ensure the reliability of the plugging, other fixing methods such as bonding can also be used together. In addition to disposing the positioning holes 12, 12... and component mounting holes 13, 13... on the straight line connecting the two fixing holes 11, 11, so that they are located They may also be arranged at positions deviated from the straight line connecting the two fixing holes 11 , 11 in the width direction of the LED board 20 , as long as they can be closed by the LED board 20 .

The recess 14 around the component mounting hole 13 is to secure a space on the rear side of the LED board 20 that blocks the component mounting hole 13, so that the component can be mounted in the component mounting hole by locking, clamping, etc. 13 and set. The through holes blocked by the LED substrates 20, 20... are not limited to the positioning holes 12, 12... and the component mounting holes 13, 13..., but also There may be holes formed for other purposes.

In addition, the shape of the LED substrates 20, 20... is not limited to a rectangle, and can also be an appropriate shape such as a rectangle, a positive direction, or a circle. In this case, the backlight chassis 1 In the design stage, the positioning holes 12, 12... and component mounting holes 13, 13.... The position of . to achieve reliable plugging. However, by making the LED substrates 20, 20... rectangular, a plurality of narrow LED substrates 20, 20... can be separated and arranged side by side in a plurality of rows, so that Reducing the total area of the LED substrates 20, 20... can reduce the cost of the LED substrates 20, 20..., thereby reducing the cost of the lighting device. The positioning holes 12, 12... and component mounting holes 13, 13... can be closed with the LED substrates 20, 20....

134 is a cross-sectional view of a liquid crystal display device according to the present invention including the lighting device having the above-mentioned structure as a backlight device. The liquid crystal display device includes a liquid crystal display panel 8 (A1) as an image display unit. In the liquid crystal display panel 8, a plurality of optical sheets 81, 81 ... (diffusion plate, reflective polarizing plate, prism sheet, diffusion sheet, etc.) (C) are stacked, and the front holding frame 82 ( A2) and the rear holding frame 83 (A3) integrally sandwich the peripheral parts of these optical sheets to constitute a liquid crystal module.

Inside the backlight chassis 1 (B6) formed by erecting the frame portion 15 (B62) on the periphery of the bottom plate 10 (B61), the LED substrates 20, 20 ... (B3) are arranged side by side as described above. ), use the reflection sheet 5 to cover the top of these LED substrates, thereby constituting the backlight unit (B), by fixing the periphery of the frame portion 15 to the back side of the rear holding frame 83, the LED2 arranged on the base plate 10 is installed, 2 . . . are made to face the back surface of the liquid crystal display panel 8 as an object to be irradiated through the optical sheets 81, 81 . . .

The substrate holder 6 sandwiches and fixes the LED substrates 20 , 20 . As shown in the figure, the front end of the support protrusion 62 abuts against the optical sheet 81 to limit the bending of the optical sheet 81 and properly hold the optical sheet 81 and the LED2, 2 .. ... the interval between.

The liquid crystal display device adopts the following structure: that is, the liquid crystal assembly and the backlight device are fixed on the front housing 80a through the front holding frame body 82 and the rear holding frame body 83, and the front holding frame body 82 and the rear holding frame body 83 are opposite to each other. The periphery of the liquid crystal module and the backlight unit are sandwiched, and the back surface of the front case 80a is covered by the rear case 80b. In the liquid crystal display device adopting such a structure, the light emitted by the LEDs 2, 2, . The entire surface passes through the optical sheets 81, 81... and the liquid crystal display panel 8, and a desired image is displayed on the display surface of the liquid crystal display panel 8 exposed in the front opening of the front case 80a.

In addition, the above-mentioned liquid crystal display device is an application example of the lighting device according to the present invention. Needless to say, the lighting device according to the present invention can be applied to applications requiring uniform irradiation of the entire surface of a planar object to be irradiated. Various uses of light.

In the above embodiments, the box-shaped base 1 in which the bottom plate 10 and the frame portion 15 are integrated is used, but the base 1 may be flat. FIG. 135 is a cross-sectional view showing another embodiment of the liquid crystal display device according to the present invention. The illustrated liquid crystal display device includes a flat base 1 .

A frame body 16 is fixed to the peripheral portion of the chassis 1 so that the frame body 16 stands on one surface (the surface on which the LED substrates 20 , 20 . . . are arranged side by side). The illustrated frame body 16 is fixed by rivets 17, but this fixing may be achieved by appropriate methods such as bolting and bonding. In the base 1 adopting such a structure, the LEDs 2, 2, . These are opposed to the back surface of the liquid crystal display panel 8 which is an object to be irradiated via the optical sheet 81,81....

The rest of the structure and operation of the liquid crystal display device shown in FIG. 135 are the same as those of the liquid crystal display device shown in FIG. 134, and the corresponding components are given the same reference numerals as in FIG. 134, and descriptions of the structure and operations are omitted.

Embodiment 11

Hereinafter, the present invention will be described in detail based on drawings showing a display device according to an embodiment.

136 is a cross-sectional view showing a part of the structure of a display device including a backlight device according to the present invention, FIG. 137 is an enlarged cross-sectional view showing a part of the structure of a backlight device according to the present invention, and FIG. 138 is A cross-sectional view showing the structure of the rivet of the backlight device according to the present invention, FIG. 139 is a plan view obtained by omitting a part of the backlight device according to the present invention, and FIG. 140 is a part of the backlight device according to the present invention. 141A and 141B are schematic perspective views obtained after disassembly. FIGS. 141A and 141B are enlarged plan views showing a part of the structure of the reflection sheet of the backlight unit according to the present invention.

As shown in FIG. 136 , the display device includes: a display unit 10 (A), which is approximately rectangular parallelepiped and has a display surface for displaying images on its front side; a light source device A (B), which B) Arranged on the rear side of the display unit 10; In addition, a power circuit board for supplying power to the display unit 10 , a terminal circuit board for processing an image displayed on the display unit 10 , and a control circuit board for controlling the display unit 10 are housed in the case 11 . A plurality of circuit boards (not shown) ( B10 ) such as a circuit board drive LED1 ( B1 ) and display panel 12 ( A1 ), which will be described later, based on outputs from these circuit boards.

The display unit 10 (A) includes a display panel 12 (A1) having a display surface, and an optical sheet 13 (C) arranged behind the display panel 12 . The front and rear holding frames 14 ( A2 ) and rear holding frames 15 ( A3 ) sandwich the peripheral portion of the display panel 12 front and rear to form a panel assembly. The rear holding frame 15 is attached to the peripheral portion of the support member 7 (B6).

The optical sheet 13 (C) is a laminate formed by laminating a thicker diffuser plate and a thinner resin sheet. Diffusion, the thinner resin sheet includes a reflective polarizer, a prism sheet, and a diffusion sheet.

The supporting member 7 ( B6 ) has a plate portion 71 ( B61 ) and a frame portion 72 ( B62 ) connected to the periphery of the plate portion 71 , and supports the peripheral portion of the diffusion plate on the frame portion 72 .

The backlight device A (B) involved in the present invention includes: a plurality of LED1 (B1), the plurality of LED1 (B1) are arranged in a matrix as a light source; a plurality of LED substrates 2 (B3), in which The LED1 is installed on one surface 2a of the LED substrate 2 (B3), arranged side by side along the vertical and horizontal directions; a plurality of connectors 3 (B4), the plurality of connectors 3 (B4) connect the adjacent LED substrates 2, 2 Connected to each other; support pin 4 (B8), the support pin 4 (B8) supports the optical sheet 13; a plurality of lenses 5 (B2), the plurality of lenses 5 (B2) are installed on one surface 2a of the LED substrate 2 On the top, opposite to the top of the LED1, the light emitted by the LED1 is diverged; the reflector 6 (B5), the reflector 6 (B5) is opposite to a surface 2a of the LED substrate 2, and the light emitted by the lens 5 is diverged Reflection occurs; the support member 7 (B6), the support member 7 (B6) supports the LED substrate 2; and a plurality of rivets 8 (B7), the reflection sheet 6 is fixed to the The supporting member 7 is used to prevent the reflection sheet 6 from floating.

The LED board 2 (B3) has a rectangular shape having a circuit portion on one surface 2a, and is arranged in a plurality of rows in vertical and horizontal directions on one surface of a substantially rectangular support member 7. As shown in the figure, on each one surface 2a of the LED substrate 2, a plurality of LEDs 1 are mounted close to each other along the longitudinal direction, and connecting portions 21 and 22 having terminals are provided at both ends of the one surface 2a in the longitudinal direction. (B31, B32).

As shown in FIG. 139, for example, 5 or 6 LED1 (B1) are separately installed along the long side direction of the LED substrate 2, and 5 or 6 lenses 5 respectively corresponding to LED1 are mounted on one LED with an adhesive. on face 2a.

In the LED substrates 2 (B3) arranged side by side, two adjacent connecting parts 21, 21 (B31, B32) of a row of LED substrates 2 along the long side direction are connected to each other through a connector 3 (B4), and one LED substrate The connection part 22 of 2 is connected to the power circuit substrate through the second connector (B41), and the connection part 22 of the other LED substrate 2 is connected to the short-circuit connector. A support pin insertion hole 23 (B36) is opened on the LED substrate 2 at a position corresponding to the support pin 4, and a rivet insertion hole 24 (B36) is opened at a position corresponding to the rivet 8.

Connector 3 (B4) is substantially rectangular parallelepiped, and the terminal corresponding to connecting portion 21,21 is provided at the both ends of the length direction of one surface thereof, when being connected with connecting portion 21,21, described connector 3 ( B4) overlaps with one surface 2 a of the LED substrate 2 .

The lens 5 (B2) includes a light-transmitting portion 51 (B21) and three positioning protrusions 52 (B22). The hemispherical concave part where the light diverges around, the positioning protrusion 52 (B22) protrudes from the LED substrate 2 opposite to the one surface 2a of the light-transmitting part 51, and positions the light-transmitting part 51 relative to the LED substrate 2. An adhesive is used to attach the front end of the positioning protrusion 52 to the one surface 2a.

The positioning protrusions 52 are provided so that the distance between the light-transmitting portion 51 and the LED substrate 2 is slightly longer than the thickness of the reflective sheet 6 , so as to absorb the thermal expansion of the reflective sheet 6 .

The reflection sheet 6 (B5) is formed by a synthetic resin sheet having a high reflectivity corresponding to the supporting member 7 and is roughly rectangular in shape, and a through-hole 61 (B53) is opened at a position corresponding to the lens 5 respectively. The part corresponding to the connector 3 is provided with a through hole 62, the part corresponding to the support pin 4 is provided with a support pin hole 63 (B55), that is, the first through hole, and the part corresponding to the rivet 8 is provided with a rivet hole 64 (B55) is the second through hole. In addition, the support pin hole 63 has a larger diameter than the support pin insertion hole 23 , and the rivet hole 64 has a larger diameter than the rivet insertion hole 24 . As shown in FIG. 141, a small hole 65 (B55a) is provided in the peripheral portion of the support pin hole 63 as a mark for identification.

The through-holes 61 are circular and have a diameter slightly larger than the light-transmitting portion 51 ( B21 ) of the lens 5 , and are arranged in a matrix. The light transmitting portion 51 of the lens 5 is arranged in the through hole 61 . The through hole 62 has a substantially rectangular shape, and the connector 3 is embedded therein. In addition, the support pin hole 63 is larger than the mounting portion 43 of the support pin 4 and smaller than the eaves portion 42. The circular shape is used for the insertion of the mounting portion 43. The rivet hole 64 is larger than the elastic portion 82b of the rivet 8. And it is a circular shape smaller than the head portion 81a, through which the elastic portion 82b is inserted.

The support member 7 (B6) is formed by forming a metal plate, and has a substantially rectangular plate-shaped plate portion 71 (B61) and a frame portion 72 (B62) connected to the periphery of the plate portion 71. On one surface of the substrate, LED substrates 2 are accommodated and supported along the longitudinal direction and the width direction.

A plurality of through holes 73 ( B65 ) are opened in positions corresponding to the support pin insertion holes 23 on the support member 7 . The through hole 74 has substantially the same diameter as the rivet insertion hole 24 .

The supporting pin 4 (B8) includes: a columnar portion 41 (B83), the columnar portion 41 (B83) protrudes from the LED substrate 2 toward the direction of the one surface 2a, and its front end is in contact with the optical sheet 13, To limit the bending of the optical sheet 13; the eaves portion 42, the eaves portion 42 protrudes from the peripheral side of the base end of the columnar portion 41 to the horizontal direction outside; and the mounting portion (foot portion) 43, the mounting portion ( The foot portion 43 protrudes from the eaves portion 42 in a direction opposite to the columnar portion 41 , and is inserted into the support pin insertion hole 23 and the through hole 73 .

The columnar portion 41 is approximately conical and integrally formed with the eaves 42 . The mounting portion 43 includes a connecting portion 43a and two claws 43b. The connecting portion 43a is columnar and faces from the eaves 42 in a direction opposite to the columnar portion 41. The two claws 43b are connected to the front end of the connecting portion 43a. connected, and fastened to the hole edge of the through hole 74. The mounting portion 43 is inserted into the insertion hole 23 to mount the support pin 4 to the LED board 2 and the support member 7 . The support pin 4 faces the optical sheet 13 at a position facing the optical sheet 13 at a distance such that only the front end of the columnar portion 41 is in contact with one surface of the optical sheet 13. The bending is limited to ensure that the distance between the optical sheet 13 and the LED substrate 2 is equal.

When the support pin 4 is mounted on the LED board 2 and the support member 7 , the outer peripheral portion of the eaves 42 extends to the small hole 65 outside the support pin hole 63 opened in the reflective sheet 6 . The eaves 42 are not in contact with the reflection sheet 6 , and there is a slight gap between them. Accordingly, when the support pin 4 is attached, the small hole 65 opened outside the support pin hole 63 cannot be seen.

In addition, as shown in FIG. 138, a plurality of through-holes 74 are opened at positions corresponding to the rivet insertion holes 24 on the support member 7 (B65). The diameter of the through hole 74 is substantially equal to the diameter of the rivet insertion hole 24 .

The rivet 8 ( B7 ) is formed of, for example, a metal or carbon material, and is inserted into the rivet insertion hole 24 and the through hole 74 . The LED board 2 is fixed to the support member 7 by the rivets 8 . The rivet 8 includes a socket rivet 82 (B71) and an insertion rivet 81 (B72).

The receiving rivet 82 (B71) includes an annular locking portion 82a (B71a) whose diameter is slightly larger than that of the rivet insertion hole 24. The inside of the rivet hole 64 on the reflective sheet 6 is locked to the edge portion of the rivet insertion hole 24 . A plurality of elastic portions 82b are arranged along the circumferential direction on the inner peripheral portion of the locking portion 82a. The elastic portion 82 b protrudes in the axial direction of the locking portion 82 a and is inserted through the rivet insertion hole 24 and the through hole 74 . The axial dimension of the elastic portion 82 b is larger than the axial dimensions of the rivet insertion hole 84 and the through hole 74 , and the protruding end portion of the elastic portion 82 b protrudes from the through hole 74 in the axial direction. A protruding end of the elastic portion 82b is integrally provided with the elastic portion 82b to protrude radially inward from the locking portion 82a, and a gap is provided between the abutting portions 82c and 82c.

The inner side of the contact portion 82c is in contact with a leg portion 81b to be described later. The contact of the leg portion 81b bends the elastic portion 82b outward so that the elastic portion 82b contacts the edge portion of the through hole 74 . Therefore, the LED board 2 and the support member 7 are sandwiched between the locking portion 82a and the elastic portion 82b front and rear.

The insertion rivet 81 (B72) has a head 81a (B72a) having a diameter larger than that of the insertion hole 11b, and a cylindrical leg 81b perpendicular to the head 81a is provided at the center of the head 81a. . A tapered portion 81ba is formed at the tip portion of the leg portion 81b so that the diameter of the leg portion 81b gradually decreases toward the tip. The diameter of the leg portion 81b near the head portion 81a is substantially the same as the inner diameter of the locking portion 82a, which is larger than the dimension between the abutting portions 82c when the leg portion 81b is not inserted. In addition, the edge portion of the head portion 81a protrudes toward the side of the foot portion 81b, and the protruding width of the edge portion of the head portion 81a is smaller than the axial dimension of the locking portion 82a. In addition, the diameter of the head portion 81 a is smaller than the diameter of the eave portion 42 of the support pin 4 .

The leg portion 81b inserted into the rivet 81 is inserted into the locking portion 82a, and the front end portion of the leg portion 81b is inserted into the gap between the abutting portions 82c. A tapered portion 81ba is formed at the front end portion of the leg portion 81b, and the gap is opened by inserting the leg portion 81b. The elastic portion 82 b is bent outward, and contacts the edge portion of the through hole 74 . The support member 7 and the LED substrate 2 are clamped with appropriate pressure by the elastic portion 82 b and the locking portion 82 a, so that the LED substrate 2 is brought into close contact with the support member 7 .

The head portion 81 a abuts against the locking portion 82 a and does not come into contact with the reflection sheet 6 . Between the edge portion of the head portion 81a protruding to the side of the leg portion 81b and the reflective sheet 6, a slight gap is provided. The reflective sheet 6 is held by the edge portion of the head portion 81a. Thereby, it is possible to prevent the reflection sheet 6 from floating with respect to the LED substrate 2 .

In the backlight device having the above-mentioned structure, in the state where the support member 7 is placed on the console with the open side facing upward, a plurality of LEDs 1 are mounted on one surface 2a, and the LEDs 1 and 1 are mounted on the surface 2a. The LED substrates 2 of the lenses 5 whose tops are facing each other are arranged on one surface of the plate portion 72 of the supporting member 7 so that the LED substrates 2 are approached to each other in the lateral direction and separated from each other in the longitudinal direction, and the connector 3 is used to connect the LED substrates 2 to each other. The laterally adjacent LED substrates 2 are connected to each other. Then, the reflective sheet 6 is placed on one surface 2 a of each LED substrate 2 so that they face each other.

At this time, the light-transmitting portion 51 of the lens 5 passes through each through-hole 61 of the reflection sheet 6 , and the connector 3 passes through each through-hole 62 . In addition, each support pin hole 63 of the reflection sheet 6, each support pin insertion hole 23 of the LED substrate 2, and each through hole 73 of the support member 7 are positionally matched, and each rivet hole 64 of the reflection sheet 6, the LED substrate 2 Each rivet insertion hole 24 and each through-hole 74 of the support member 7 perform position matching.

After the reflection sheet 6 is installed, the support pin 4 and the rivet 8 are installed. Specifically, the mounting portion 43 of the support pin 4 is inserted into the support pin insertion hole 23 of the LED board 2 and the through-hole 73 of the support member 7 through the support pin hole 63 of the reflector 6, and fastened, so that the support pin 4 is fixed to the supporting member 7. After inserting the receiving rivet 82 of the rivet 8 through the rivet hole 64 of the reflective sheet 6 into the rivet insertion hole 24 of the LED substrate 2 and the through hole 74 of the support member 7, insert the foot 81b of the rivet 81 into the receiving rivet 82. The locking portion 82 a fixes the rivet 8 to the support member 7 by inserting the front end portion of the leg portion 81 b into the gap between the abutting portions 82 c.

As shown in FIG. 140 , the difference in external dimensions between the support pin hole 63 and the rivet hole 64 is small, and it is difficult to recognize and distinguish from the appearance. , can be identified with the naked eye, so that the installation between the support pin 4 and the rivet 8 will not be wrong.

In addition, as shown in FIG. 141A , in the backlight device according to the present invention, the diameter of the head portion 81 a of the rivet 8 is smaller than the diameter of the eave portion 42 of the support pin 4 . In addition, the small hole 65 for identification opened around the support pin hole 63 is provided at a position where it is not covered by the rivet 8 but is covered by the support pin 4 . The small hole 65 is provided so that when the support pin 4 is inserted into the support pin hole 63, the small hole 65 will be covered by the eaves 42 of the support pin 4, and when the rivet 8 is inserted into the support pin hole 63, At least a part of this small hole 65 can be seen. Thus, when the rivet 8 is wrongly attached to the support pin hole 63, since the small hole 65 can be seen, it is immediately known that the mistake was made, and the support pin 4 can be attached reliably. In addition, conversely, when the support pins 4 are installed in the rivet holes 64 by mistake, the number of support pins 4 will increase, so that the optical sheet 13 can be supported more reliably, and the reflection sheet can also be held. , so there is no particular problem.

In addition, in the backlight device according to Embodiment 11, the small hole 65 ( B55 a ) is used as the identification mark. The small holes 65 may be formed in the reflection sheet 6 at the same time as the support pin holes 63 are formed. Therefore, it is possible to reliably add the identification mark without consuming special steps/number of steps for adding the identification mark. In addition, the identification mark is not limited to the small hole 65 provided in the reflection sheet 6, as long as the supporting pin hole 63 and the rivet hole 64 can be distinguished with naked eyes when the supporting pin 4 and the rivet 8 are installed.

In addition, in the backlight device according to Embodiment 11, the support pin 4 is inserted into the support pin hole 63 and fixed to the LED board 2 and the support member 7, and the rivet 8 is inserted into the rivet hole 64 to be fixed to the LED board 2 and the support member. Component 7, but not limited thereto. For example, the support pin 4 and the rivet 8 may be fixed only to the LED substrate 2 . In addition, support pin holes 63 and rivet holes 64 may also be opened in the portion of the reflective sheet 6 where the LED substrate 2 is not formed, and the support pins 4 and rivets 8 are respectively inserted into the support pin holes 63 and rivet holes 64 and fixed to the support member 7 .

In addition, in the backlight unit according to the eleventh embodiment, the case where the small hole 65 for identification is provided in the reflection sheet 6 to prevent the wrong installation of the rivet 8 has been described, but other than this, the following configurations may also be adopted: : That is, from the resist covering one surface 2 a of the LED substrate 2 , the resist around the rivet hole 64 into which the rivet 8 is inserted is removed to expose the substrate base. In this structure, since the substrate base around the hole can be covered when the rivet 8 is inserted into the rivet hole 64, and the substrate base around the hole can be seen when the rivet 8 is not inserted into the rivet hole 64, forgetting installed rivets 8.

As mentioned above, although embodiment of this invention was described in detail based on drawing, this invention is not limited to the said embodiment, Various deformation|transformation is possible within the range of the summary of this invention.

Embodiment 12-1

Next, the display device according to Embodiment 12-1 will be described in detail based on the drawings shown. Fig. 142 is a longitudinal sectional view schematically showing the display device.

In the figure, reference numeral 1 is a rectangular display panel having liquid crystals, and the display panel 1 (A1) has a structure in which a voltage applied to liquid crystals is controlled to adjust light transmittance to display video. The peripheral portion of the display panel 1 is sandwiched between the front holding frame 2 (A2) and the rear holding frame 3 (A3), and is accommodated in a rectangular frame-shaped front case 4 (D1). The front housing 4 is disposed around the front holding frame 2 and the rear holding frame 3 . The front case 4 has a rectangular opening whose size corresponds to that of the display panel 1 . The rear side of the display panel 1 is provided with a plurality of optical sheets 5(C) for directing light from an LED (Light Emitting Diode) 9 as a light source to be described later. The display panel 1 performs focusing.

The back side of this optical sheet 5 is provided with the diffusion plate 6 which diffuses the light of LED9 uniformly. The diffuser plate 6 is supported by the edge portion of a deep dish-shaped support plate 7 formed of metal. On the front surface of the support plate 7 (B6), a plurality of LED substrates 8 (B3) are arranged side by side, and on the rear surface of the LED substrate 8, a film-like heat sink made of a thermally conductive material, such as metal, is formed. Pattern 8a.

A plurality of LED9, 9, ..., 9 (B1) are installed on the front surface of this LED substrate 8 (B3), and the front sides of each LED9, 9, ..., 9 are respectively arranged There are lenses 10, 10, ..., 10 (B2) that diffuse the light. On the peripheral portion of the lens 10, three protrusions 10a, 10a, 10a (B22) protruding toward the LED substrate 8 side are arranged side by side in the circumferential direction, and the front ends of the protrusions 10a are firmly bonded to the LED substrate by an adhesive. 8 on the front surface.

Support stands (not shown) for supporting the deep dish-shaped reflection sheet 11 (B5) are provided on the left and right sides of the support plate 7, respectively. A plurality of holes 11 a ( B53 ) for inserting the lenses 10 are opened on the bottom surface of the reflection sheet 11 . Each lens 10 protrudes to the front side through the hole 11a.

The rear side of the support plate 7 is provided with a deep dish-shaped rear housing 12 ( D2 ). The rear case 12 has substantially the same longitudinal and transverse dimensions as those of the front case 4, and edge portions of the rear case 12 and front case 4 are opposed to each other. The edge portions of the front housing 4 and the rear housing 12 are respectively provided with an engaging convex portion and an engaging concave portion not shown, and the engaging concave portion is engaged with the engaging convex portion to fix the front housing 4 to the rear. shell12.

FIG. 143 is a schematic rear view of the support plate 7 viewed from the rear side, and FIG. 144 is a perspective view schematically showing a through-hole formed in the vicinity of the edge of the support plate.

In the vicinity of the edge of the support plate 7 ( B6 ), there is a truncated pyramid portion 7 a (protruding portion) formed by protruding a part of the support plate 7 rearward by extrusion and stretching. A rectangular through-hole 7c (B61a) that runs through the front and rear is opened on the top portion 7b of the pyramidal truncated portion 7a, and two notches (cards) are formed at an appropriate length on each edge portion of the through-hole 7c along the longitudinal direction. Concave) 7d, 7d (B61b). The size between the notches 7d, 7d formed in one edge portion is different from the size between the notches 7d, 7d formed in the other edge portion. On the outer side of one end edge of the through-hole 7c along the longitudinal direction, a fastening hole 7e (B61c) is opened in the top surface portion 7b. The locking protrusion 41 (B91d) mentioned later is locked in this locking hole 7e.

As shown in FIG. 143 , on the rear surface of the support plate 7, a power circuit board 20 (B10a) for supplying power to the display panel 1 and the LED board 8, etc., and a control circuit board 21 for driving and controlling the display panel 1 are provided. ( B10b ), and a signal processing circuit board 22 ( B10c ) for processing video signals displayed on the display surface of the display panel 1 . A plurality of linear conductors 25 ( B40 ) are connected to the power circuit board 20 , and the conductors 25 are inserted through the through holes 7 c to be connected to the LED board 8 . Between the power circuit board 20 and the through-hole 7 c, a plurality of conductors 25 are bundled with a band 26 . Furthermore, the conductor 25 is covered with an insulator.

In the said through hole 7c, the protective tube 30 (B91) which isolate|separates the protective conductor 25 from the edge part of the through hole 7c is fitted. The axial dimension of the protective tube 30 is short, and the cross section of the protective tube 30 perpendicular to the axial direction is rectangular corresponding to the through-hole 7c. The cover part 50 is attached to the protection cylinder 30 (B92). A recess 30 b ( B91 a ), which will be described later, is formed in the protective tube 30 , and when the cover 50 is attached to the protective tube 30 , the conductor 25 is inserted between the recess 30 b and the cover 50 .

Fig. 145 is a plan view schematically showing the protective tube 30 fitted in the through hole 7c, Fig. 146 is a schematic sectional view at the line VII-VII shown in Fig. 145 , and Fig. 147 is a schematic sectional view at the line VIII-VIII shown in Fig. 145 . As a schematic sectional view, FIG. 148 is a schematic sectional view at line IX-IX shown in FIG. 145 .

As shown in Figure 146 and Figure 147, on the side of one end in the longitudinal direction, the width of the two sides of the protective tube 30 along the longitudinal direction in the axial direction of the prism-shaped protective tube 30 is relatively narrow, and the width of the middle part It gradually expands toward one end in the axial direction (downward in FIG. 146 and FIG. 147 ), and the width on the side of the other end is wider.

As shown in FIG. 145 , one end in the longitudinal direction of the protective tube 30 is open, and a connecting plate 30 a connected to both sides of the protective tube 30 in the longitudinal direction is provided at this end. This connecting plate 30a is relatively flat, and as shown in FIGS. 145 and 148, recesses 30b are formed by this connecting plate 30a and the two side surfaces (B91a). On the edge portion of the recessed portion 30b on the side opposite to the one end portion, there is provided an inclined plate 30c connected to the middle portion of the protection tube 30 whose axial width gradually expands. Between the inclined plate 30c and the other end in the longitudinal direction of the protective tube 30 , a narrow reinforcing plate 30d perpendicular to the axial direction of the protective tube 30 protrudes from the inner peripheral surface of the protective tube 30 by an appropriate length. The protective tube 30 is provided with a notch 30e in the reinforcing plate 30d connected to the other end in the longitudinal direction of the protective tube 30 .

The protective tube 30 ( B91 ) is slightly shorter than the rectangular through-hole 7 c in the longitudinal direction and the width direction, and the protective tube 30 ( B91 ) is fitted into the through-hole 7 c. As shown in Fig. 146 and Fig. 147, the above-mentioned portion where the axial width gradually expands in the protective tube 30 fitted in the through hole 7c and the portion with a wider width are located at the top surface portion 7b of the pyramidal truncated portion 7a. Between one surface (the lower surface in FIGS. 146 and 147 ) and the front surface of the support plate 7 .

As shown in Figure 146, on one side along the longitudinal direction of the protective tube 30, two positioning plates 31, 31 (positioning parts) are arranged side by side along the longitudinal direction, and these two positioning plates 31, 31 (positioning parts) ) protrudes from this one side and is parallel to the radial direction of the through hole 7c. The positioning portions 31, 31 are located on the other side of the top surface portion 7b (upper side in FIG. 146). In addition, on one side surface of the protective tube 30 along the longitudinal direction, two plate-shaped engaging pieces (engaging protrusions) 32, 32 (B91b) are arranged side by side along the longitudinal direction. (Engagement protrusions) 32, 32 (B91b) are parallel to the radial direction of the through-hole 7c. The engaging pieces 32, 32 are arranged alternately with the positioning plates 31, 31 in the longitudinal direction, and are located on one surface side (the lower side in FIG. 146 ) of the top surface portion 7b of the truncated pyramid portion 7a. The dimension between the positioning plates 31, 31 and the engaging pieces 32, 32 is slightly longer than the thickness dimension of the top surface portion 7b of the truncated pyramid portion 7a.

In addition, on the one side of the protection tube 30, there is provided a claw 33 protruding outwards, the claw 33 is separated from the positioning plates 31, 31 by an appropriate length along the longitudinal direction, and is located on the other side of the top surface 7b. One side. In addition, in the corner portion located on the other side of the top surface portion 7b on the one end side in the longitudinal direction of the one side surface of the protective tube 30, there is provided a side surface protruding outward along the corner portion. See the L-shaped abutment portion 34 (B91c). This contact portion 34 is in contact with a bent portion 55 ( B92 a ) which will be described later.

On the other hand, as shown in FIG. 147, on the other side of the protective tube 30 along the longitudinal direction, two positioning plates 35, 35 are arranged side by side in the longitudinal direction, and the two positioning plates 35, 35 are aligned with the through hole. The radial direction of 7c is parallel. The positioning portions 35, 35 are located on the other side of the top surface portion 7b (upper side in FIG. 147). In addition, on the other side of the protective tube 30 along the longitudinal direction, two plate-shaped engaging pieces 36, 36 (B91b) are arranged side by side along the longitudinal direction. These two engaging pieces 32, 32 (B91b) ) is parallel to the radial direction of the through hole 7c. The engaging pieces 36, 36 are arranged alternately with the positioning plates 35, 35 in the longitudinal direction, and are positioned on one surface side (the lower side in FIG. 147 ) of the top surface portion 7b of the truncated pyramid portion 7a. The engaging pieces 36 , 36 and the engaging pieces 32 , 32 provided on the one side surface along the longitudinal direction of the protective tube 30 are arranged at asymmetrical positions in the width direction of the protective tube 30 . The dimension between the engaging pieces 36 , 36 is longer than the dimension between the engaging pieces 32 , 32 . In addition, when the cover part 50 is attached to the protective tube 30, the positions of the engaging pieces 32, 32 and the engaging pieces 36, 36 correspond to the four notches 7d.

In addition, on the other side of the protection tube 30, there is provided a protruding claw portion 37, which is separated from the positioning plates 35, 35 by an appropriate length along the longitudinal direction, and is located on the top surface portion 7b. The other side (upper side in Figure 147). The claw portion 37 and the claw portion 33 provided on the one side surface along the longitudinal direction of the protection tube 30 are arranged at symmetrical positions in the width direction of the protection tube 30 . The dimension between the positioning plates 35, 35 and the engaging pieces 36, 36 is slightly longer than the thickness dimension of the top surface portion 7b of the truncated pyramid portion 7a. In addition, in the other side surface of the protection tube 30, at the corner portion located on the other side of the top surface portion 7b on the side of the one end portion in the longitudinal direction, there is provided a corner portion protruding outward along the corner portion. The abutting portion 38 ( B91c ) is L-shaped in side view. The contact portion 38 is in contact with a bent portion 55 (B92a) described later.

As shown in FIG. 146 and FIG. 147 , the connecting plate 30 a is provided with a clamping portion 39 protruding from the connecting plate 30 a toward one end in the axial direction. The locking portion 39 is locked to the edge portion of the through-hole 7c along the width direction. On the outer surface of the other end portion in the longitudinal direction of the protective tube 30 , a tongue-shaped protruding portion 40 protruding in the longitudinal direction is provided. The protruding portion 40 is located on one side of the top surface portion 7b, and at the protruding end portion of the protruding portion 40, there is provided a protrusion protruding to the other side side corresponding to the locking hole 7e (B61c). The locking protrusion 41 (B91d). The locking protrusion 41 is locked to the locking hole 7e opened on the top surface portion 7b, thereby positioning the protection tube 30 in the radial direction of the through hole 7c.

Positioning plates (positioning portions) 42 , 42 protruding from the side faces in the longitudinal direction and the side faces in the width direction are provided at both corners of the other end portion in the longitudinal direction of the protective tube 30 . The positioning plates 42, 42 are perpendicular to the penetration direction of the through hole 7c, and are positioned on one side of the top surface portion 7b. The positioning plates 42, 42 are located at substantially the same positions as the positioning plates 31, 35 described above in the penetration direction. Therefore, the positioning plates 31 , 35 , 42 and the engaging pieces 32 , 36 are disposed on both sides of the top surface of the truncated pyramid portion 7 a to position the protection tube 30 along the penetration direction of the through hole 7 c.

In addition, each engaging piece 32, 36 is arranged at a position corresponding to each notch 7d, and the protective tube 30 is fitted into the through hole 7c. In this case, each engaging piece 32, 36 is connected to each The notches 7d are engaged so that the respective engaging pieces 32 and 36 are located on one surface side of the top surface portion 7b. Then, in the state where the positioning plates 31, 35, 42 are in contact with the top surface portion 7b, the protection tube 30 is slid to the other end side in the longitudinal direction, thereby locking the locking projection 41 to the locking protrusion. The hole 7e is provided, and the positioning plates 31, 35, 42 and the engaging pieces 32, 36 are arranged on both sides of the top surface portion 7b, respectively. At this time, as shown in FIG. 146 and FIG. 147, the positioning plates 31, 35, 42 are in contact with the top surface portion 7b, and the above-mentioned portion where the axial width gradually expands in the protection tube 30 fitted in the through hole 7c, and all The wider portion is located on the rear side of the front surface of the support plate 7 .

The cover portion 50 is disposed on a portion of the protective tube 30 protruding toward the other surface side of the top surface portion 7b. Fig. 149 is a top view schematically showing the cover portion 50, Fig. 150 is a schematic side view viewed from the F1 direction described in Fig. 149, Fig. 151 is a schematic side view viewed from the F2 direction described in Fig. 149, and Fig. FIG. 149 is a schematic sectional view taken along line XI-XI, and FIG. 153 is a schematic side view viewed from the direction F3 shown in FIG. 149 .

The cover part 50 (B92) includes a rectangular closing plate part 51 placed on the protective tube 30, and side parts 52, 52 connected to the edge part of the closing plate part 51 across the middle part from one end in the longitudinal direction. , and a side portion 53 connected to the edge portion of the closing plate portion 51 in the width direction. As shown in FIG. 149 , notches 54 , 54 are formed at both corners of one end portion in the longitudinal direction of the closing plate portion 51 . Bent parts 55, 55 (B92a) are provided on the notches 54, 54, and the bent parts 55, 55 (B92a) are connected to the side parts 52, 52, and are bent into an L shape, so that one side of the notch 54 is recessed. . The curved portion 55 protrudes toward one end in the longitudinal direction of the closing plate portion 51 , and a space is formed by the curved portion 55 and the notch 54 . As shown in FIG. 153 , an elastic member 70 extending in the width direction protruding toward the bent portion 55 side is provided on the closing plate portion 51 between the notches 54 , 54 .

The other end portion in the longitudinal direction of the closing plate portion 51 is slightly narrower than the middle portion. On the other end in the longitudinal direction of the closure plate portion 51, a hook-shaped locking portion 56, 56 (B91e) is provided at the edge portion along the longitudinal direction, and the locking portion 56, 56 (B91e) is aligned with the The elastic member 70 protrudes in the same direction as described above (refer to FIG. 151 ). As shown in FIGS. 150 and 152 , locking holes 56 a , 56 a are formed in portions of the locking portions 56 , 56 on the side of the closing plate portion 51 .

Next, attachment of the cover portion 50 to the protective tube 30 will be described. 154 and 155 are explanatory diagrams illustrating attachment of the cover portion 50 to the protective tube 30 . In addition, in FIG. 154 , description of the conductor 25 is omitted.

As shown in FIG. 154 , when attaching the cover portion 50 to the protective tube 30 , first, the plurality of conductors 25 are inserted through the protective tube 30 and arranged in the recessed portion 30 b. Next, as shown in FIG. 154 , the cover portion 50 is set in an inclined posture relative to the top surface portion 7b, and the abutment portions 34, 38 are inserted into the space formed by the curved portion 55 and the notch 54, so that the abutment portions 34, 38 It is in contact with the inner corner portions of the bent portions 55 , 55 . Then, with the abutting portions 34, 38 as fulcrums, the cover portion 50 is brought close to the protection tube 30, and the locking portions 56, 56 are brought into contact with the claw portions 33, 37 to be elastically deformed. Then, the cover part 50 is brought closer to the protective tube 30, and the claw parts 33, 37 are locked to the locking holes 56a, 56a. At this time, as shown in FIG. 155 , the conductor 25 is sandwiched between the elastic member 70 and the connecting plate 30 a in the concave portion 30 b. The connecting plate 30a is relatively flat, and a plurality of conductors 25 are regularly and closely arranged in the concave portion 30b.

In the display device according to Embodiment 12-1, since the plurality of conductors 25 inserted through the through holes 7c are arranged in the recessed portion 30b, when the protective tube 30 is closed with the cover portion 50, the A plurality of conductors 25 are sandwiched in the concave portion 30b, so that the conductors 25 can be collected in the concave portion 30b in a short time, and dust can be prevented from entering through the through hole 7c.

In addition, since the conductor 25 is clamped between the elastic member 70 and the connecting plate 30a, the conductor 25 is closely gathered by the elastic force of the elastic member 70, and the gap in the recess 30b is filled, so the conductor 25 can be fixed in a short time. It collects in the recessed part 30b, and can prevent dust entering from the through-hole 7c reliably.

In addition, since the conductors 25 can be easily and regularly arranged in the recessed portion 30b by using the flat connecting plate 30a, compact gathering is facilitated, and therefore, the conductors 25 can be reliably bundled in the recessed portion 30b.

As mentioned above, the size between the gaps 7d, 7d formed on one edge portion is different from the size between the gaps 7d, 7d formed on the other edge portion, and corresponding to the different sizes, the distance between the engaging pieces 36, 36 The dimension is longer than the dimension between the engaging pieces 32 and 32 . Therefore, only when the protective tube 30 is disposed in the through hole 7c facing a predetermined direction, the engaging pieces 32 and 36 formed on the outer peripheral portion of the protective tube 30 can engage with the notch 7d formed on the edge portion of the through hole 7c. Snap. This prevents the operator from mistaking the orientation of the protective tube 30 when assembling the display device and attaching the protective tube 30 to the through hole 7c, so that the display device can be quickly and reliably assembled.

In addition, since the protective tube 30 is fitted into the through hole 7c provided in the truncated pyramid part 7a, the positioning plates 31, 35, 42 are in contact with the top surface part 7b and fitted into the protective tube 30 in the through hole 7c. The part where the above-mentioned axial width gradually expands and the part where the width is wider is located on the rear side of the front surface of the support plate 7. Therefore, the protective tube 30 will not interfere with the parts arranged on the front surface side of the support plate 7. Assembling of the display device is not hindered by fitting the protective tube 30 into the through hole 7c.

In addition, since the clamping hole 7e and the clamping protrusion 41 are provided on the support plate 7 and the protection tube 30 to position the protection tube 30 in the radial direction of the through hole 7c, the protection tube can be reliably positioned. 30 is installed in the through hole 7c.

In addition, since the protection tube 30 is positioned along the penetration direction of the through hole 7c by the positioning plates 31, 35, 42, the protection tube 30 can be reliably fixed to the through hole 7c.

In addition, when the cover part 50 is attached to the protective tube 30, since the contact parts 34, 38 are brought into contact with the inner corners of the curved parts 55, 55, and the cover part is moved with the contact parts 34, 38 as fulcrums 50 is rotated toward the protective tube 30 , the operator can easily attach the cover 50 to the protective tube 30 , and efficiently manufacture the display device in a short time.

In addition, since the cap 50 is fixed to the protective tube 30 by locking the claws 33 , 37 with the locking holes 56 a , 56 a , it is possible to prevent the attached cap 50 from coming off the protective tube 30 .

In addition, since the support plate 7 is not formed into a complicated shape for passing the conductor 25 without being damaged, such as a groove shape, the support plate 7 can be manufactured in a short time. In addition, the protective tube 30 can prevent the conductor 25 from being damaged by the edge of the through-hole 7c.

In the display device according to Embodiment 12-1, the notch 7d is formed in the through hole 7c, and the engaging pieces 32, 36 are provided in the protection tube 30, but the engaging pieces may be provided in the through hole 7c, On the outer periphery of the protection tube 30, an engaging concave portion 30b into which the engaging piece engages is provided. In addition, the locking protrusion is provided on the extension part 40, and the locking hole 7e is provided on the top surface part 7b, but the locking protrusion may be provided on the top part 7b, and the locking hole 7e may be provided on the extension part 40. . In addition, although the recessed portion 30b is formed only on the protective tube 30, the recessed portion 30b may be formed on the cover portion 50, and the recessed portion 30b facing each other may be formed on two parts of the cover portion 50 and the protective tube 30. .

In addition, although the display device according to Embodiment 12-1 uses LED 9 as a light source, a fluorescent tube may also be used as a light source. In this case, the fluorescent tubes are mounted on the support plate 7 via the tube holders. Alternatively, instead of using a light source such as an LED or a fluorescent tube, a panel that emits light itself, such as an organic EL panel, is used as the display panel, and a control signal is input to the display panel from the signal processing circuit 21. .

Embodiment 12-2

Next, the display device according to Embodiment 12-2 will be described in detail based on the shown drawings. 156 and 157 are explanatory diagrams illustrating attachment of the cover portion 50 to the protective tube 30 of the display device, and FIG. 158 is an enlarged perspective view schematically showing the vicinity of the engaging shaft. In addition, in FIG. 156 , description of the conductor 25 is omitted.

As shown in FIG. 156 , two claws 80 , 80 are respectively provided on both sides of the protection tube 30 along the longitudinal direction, and the claws 80 , 80 are located on the other side of the top surface 7 b. Two edge portions along the longitudinal direction of the closing plate portion 51 are respectively provided with side portions 58 formed across the middle portion from the other end portion, and on the side portion 58, two claw portions 80, 80 corresponds to the locking holes 58a, 58a. The other end portion of the closing plate portion 51 is a thin elastic plate portion 51a, and contact shafts (contact portions) 51b, 51b protruding in the width direction are provided at both corners of the elastic plate portion 51a. On one end side of the protective tube 30 , L-shaped bent portions 45 , 45 protruding outward from both side surfaces of the protective tube 30 in the longitudinal direction are provided.

When attaching the cover part 50 to the protection tube 30, first, the plurality of conductors 25 are inserted into the protection tube 30 and arranged in the recessed part 30b. Next, as shown in FIG. 156 , the cover portion 50 is set in a posture inclined relative to the top surface portion 7 b, and the contact shaft 51 b is brought into contact with the inner corner portions of the curved portions 45 , 45 as shown in FIG. 158 . Then, with the contact portion 51 b as a fulcrum, the cover portion 50 is brought close to the protection tube 30 , and the side portion 58 is brought into contact with the claw portions 80 , 80 to be elastically deformed. The cover part 50 is brought closer to the protection tube 30, and the claw parts 80, 80 are locked to the locking holes 58a, 58a. At this time, as shown in FIG. 157 , the conductor 25 is sandwiched between the elastic plate portion 51 a and the connection plate 30 a in the concave portion 30 b. The connecting plate 30a is relatively flat, and a plurality of conductors 25 are regularly and densely arranged in the concave portion 30b. Moreover, the elastic member 70 may be provided in the elastic plate part 51a, and the conductor 25 may be sandwiched between this elastic member 70 and the connection plate 30a.

Among the configurations of the display device according to Embodiment 12-2, the same configurations as those in Embodiment 12-1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

Label description

(Embodiment 1-1 to Embodiment 1-5)

1 LED (light source)

2 LED substrate (circuit substrate)

5 Reflectors

51 flat part

51a Corner

52 Frame part

52a Corner

53 (53a, 53b) second folding line

53c Bending part

54 resection

55 double-sided tape (combining components)

56 eaves

57 Resection

58 incisions

6 supporting shell

70 display unit

A light source device

(Embodiment 2-1 to Embodiment 2-6)

1 LED (light source)

2 LED substrate (circuit substrate)

21 Connecting part

3 connectors

5 Reflectors

52 incisions

52a long side

52b short side

54 Second incision

54a long side

54b short side

55 Third incision

55a long side

55b short side

56 incisions

56a long side

56b short side

57 Fourth incision

57a long side

57b short side

50, 58, 59 cuts

70 Display

A light source device

(Embodiment 3-1 to Embodiment 3-2)

1 display panel

6 Diffusion plate

7 support plate

7a Through hole

7b, 8b Positioning holes

8 LED substrate (substrate)

8a Substrate hole

9 LED (light emitting element)

11 reflector

11a sheet hole

11b, 11c, 11d insertion holes

20 rivets

21, 31, 41 insert rivets

21a, 31a, 41a head

21b, 31b, 41b feet

22 Undertake rivets

22a Locking part

22b Elastic part

22c Contact part

30 set rivets

31c Positioning Department

40 support rivets

41c Support part

(Embodiment 4)

1 Light-emitting diode (light-emitting element)

2 LED substrate (circuit substrate)

2A LED substrate (circuit substrate)

2a one side

2b the other side

2c through hole

2d through hole

2e1 through hole

2e2 through hole

2e3 through hole

2e4 through hole

2e5 through hole

2e6 through hole

4 reflective sheet (reflective member)

4A reflector (reflective member)

43 The third through hole (opening)

6 Support body

61a Through hole

8 rivets (fixtures)

81 Barrel components

81a Flange

82 shaft member

82a head

70 display unit

72a display surface

A light source device

(Embodiment 5-1 and Embodiment 5-2)

1 display panel

7 support plate

7a second through hole (through hole)

8 Substrate

8a first through hole (through hole)

9 Light-emitting diodes (light-emitting elements)

10 lenses

11 reflector

11a Sheet hole

11b hole

11c Through hole

20 rivets (fixed components)

21 Insert rivets

21a head

21b feet

22 Undertake rivets

30 screws

30a head

30b Shaft (foot)

31 Washer

(Embodiment 6-1 to Embodiment 6-4)

A display part

B Light source department

3 LEDs (light source)

4 LED substrate (circuit substrate)

7 light reflector

71 flat part

74 through hole

75, 78 long holes

76 second hole

8 Support body

84 First position setting hole

85 Second position setting hole

9 The first shaft body (the first position setting part)

91b setting shaft

9b Screw part (setting shaft part)

10 Second shaft body (second position setting part)

10c eaves part (setting shaft part)

10g medium diameter shaft (setting shaft)

(Embodiment 7)

1 Light-emitting diode (light-emitting element)

2 LED substrate (circuit substrate)

2a one side

2b the other side

2c, 2d Insertion hole

21 connection part

5 connectors

51 Plug (connector part)

51a metal fittings

52 socket (connector part)

52a needle electrode

6 Support body

61a Through hole

8 rivets (fixtures)

81 Barrel components

81a Flange

82 shaft member

82a head

70 display unit

72a display surface

A light source device

(Embodiment 8)

1 Light-emitting diode (light-emitting element)

2 LED substrate (circuit substrate)

2a one side

2b the other side

2c, 2d through hole

3 lenses

31b Opposite side

6 Support body

61a Through hole

8 rivets

81 Barrel member (shaft part)

81a Flange

82 shaft member (shaft part)

82a head

82b, 82c, 82d groove (recess)

70 display unit

72a display surface

A light source device

(Embodiment 9)

1 light source device

2 circuit substrate

21 The first connecting part

22 The second connecting part

23 Luminous Department

31, 32, 33 mark

51, 52, 53 logo

6 Installation components

7 display device

7a display surface

70 display unit

(Embodiment 10)

1 backlight base (base)

2 LED (solid light emitting element)

3 lenses

8 LCD display panel

10 Bottom plate

11 Fixing hole

12 Positioning hole (through hole)

13 Component mounting holes (through holes)

14 recess

20 LED substrates

(Embodiment 11)

A Backlight device

1 LED (light emitting element)

2 LED substrate

4 support pin

41 Cylindrical part

42 eaves

43 Installation Department

6 Reflectors

63 Support pin hole (first through hole)

64 Rivet hole (second through hole)

65 holes

7 Support member

8 rivets

81a head

81b foot

13 optical sheet

(Embodiment 12-1 and Embodiment 12-2)

1 display panel

9 LED (light source)

7 support plate

7a Pyramid frustum (protrusion)

7c Through hole

7d notch (engagement concave part)

7e Fastening hole

20 power board

21 Signal processing substrate (circuit substrate)

22 control board

25 conductors

30 protective tube

30b recessed part

31, 42 positioning plate (positioning plate)

32 engaging piece (engaging convex part)

33, 80 claws

34, 38 contact part

41 Clamping protrusion

45, 55 bending part

50 cover

51b Contact shaft (contact part)

56a, 58a Fastening holes

70 elastic member

Claims (3)

1. a display device, comprising: substrate, a face of this substrate is provided with light-emitting component display panel being irradiated to light; Support plate, this support plate supports another face of described substrate; And reflector plate, this reflector plate is configured on a face of described substrate, reflects, it is characterized in that the light irradiated from described light-emitting component,

Described display device comprises:

Substrate aperture, this substrate aperture is arranged on described substrate;

Through hole, this through hole is arranged on position corresponding with described substrate aperture on described support plate;

Inserting hole, this inserting hole is arranged on position corresponding with described substrate aperture on described reflector plate; And

Rivet, the foot that this rivet has head and extends out from this head, and described foot is inserted described substrate aperture, through hole and inserting hole from the side, a face of described substrate,

Between the marginal portion of described head and described reflector plate, the thickness direction along described reflector plate is provided with gap,

Described inserting hole has the diameter larger than described substrate aperture,

And the engaging portion had in the form of a ring, this engaging portion in the marginal portion of the inner side of described inserting hole engaging in described substrate aperture,

When described foot is inserted described engaging portion, described head and described engaging portion abut against.

2. display device as claimed in claim 1, is characterized in that, comprising:

Pilot hole, this pilot hole is offered on the substrate, adjacent with described substrate aperture in the inner side of described inserting hole, for positioning described reflector plate; And

Location division, this location division is adjacent with described foot, extends, insert in described pilot hole from described head to described substrate side.

3. display device as claimed in claim 1 or 2, is characterized in that, comprising:

Diffuser plate, this diffuser plate is relative with described reflector plate, and light is spread; And

Support, this support extends from described head to described diffuser plate side, supports described diffuser plate.