JP2012069303A - Lamp and lighting system - Google Patents

Abstract

Provided are a lamp and an illumination device capable of suppressing the occurrence of distortion.
SOLUTION: A straight pipe 10, a base 30 provided in the straight pipe 10 on which a plurality of LED modules 20 are mounted, and an adhesive 40 for bonding the straight pipe 10 and the base 30 are provided. . The base 30 has a notch 32 formed on the surface facing the inner surface of the straight pipe 10. The notch 32 is formed along the direction intersecting the tube axis of the straight pipe 10, and the adhesive 40 is formed inside the notch 32.
[Selection] Figure 2

Description

  The present invention relates to a lamp using a semiconductor light emitting element such as an LED (Light Emitting Diode) and an illumination device including the lamp, and more particularly to a straight tube LED lamp and an illumination device.

  In recent years, semiconductor light-emitting elements such as light-emitting diodes (LEDs) have been used in various lamps as highly efficient and space-saving light sources.

  An LED lamp using such an LED includes an LED module (light emitting module), and the LED module is configured by sealing an LED mounted on a substrate with a resin. As LED lamps, there are straight tube type LED lamps (straight tube type LED lamps) and light bulb type fluorescent lamps (bulb type LED lamps). In any lamp, a plurality of LEDs are arranged on a substrate. A configured LED module is used. For example, Patent Document 1 discloses a conventional straight-tube LED lamp.

JP 2009-43447 A

  The present inventors have also studied various types of straight tube type LEDs. For example, straight tube type LEDs as shown in FIGS. 20 (a) and 20 (b) have been studied. Fig.20 (a) is sectional drawing which shows an example of straight tube | pipe type LED. FIG. 20B is a cross-sectional view of the straight tube type LED cut along the line B-B ′ of FIG.

  As shown in FIGS. 20 (a) and 20 (b), the straight tube type LED lamp 100 examined by the present inventors includes a straight tube 110 made of a long glass tube, and a straight tube 110. A plurality of line-shaped LED modules 120 provided inside and a pair of caps 150a and 150b provided at both ends of the straight pipe 110 are provided. The LED module 120 includes a long plate-shaped mounting substrate 121, a plurality of LEDs 122 mounted on the mounting substrate 121, and a sealing member 123 that seals the plurality of LEDs 122.

  Also, as shown in FIGS. 20 (a) and 20 (b), a long plate-like base 130 (heat sink) made of aluminum is provided in the straight pipe to dissipate the heat generated by the LEDs. It has been. The surface of the base 130 is a flat surface, and the plurality of LED modules are placed in a row on the surface. The back surface of the base 130 is a cylindrical surface having substantially the same shape as the inner surface of the straight tube 110, and the back surface of the base 130 and the inner surface of the straight tube 110 are bonded with a silicone resin applied to the entire back surface of the base 130. It is fixed by a material 140.

  However, such a straight tube type LED lamp 100 has a problem that the entire straight tube is warped, and the shape of the LED lamp is distorted. When the LED lamp is distorted, there is a problem that the light orientation is deteriorated or the LED lamp cannot be mounted on the lighting fixture.

  The present invention has been made to solve the above-described problem, and an object of the present invention is to provide a lamp and an illumination device that can suppress the occurrence of distortion.

  In order to solve the above problems, one aspect of a lamp according to the present invention is a straight pipe, a base provided in the straight pipe, on which a light emitting module is placed, and the straight pipe and the base are bonded. And the base has a notch formed on a surface facing the inner surface of the straight pipe, and the notch intersects the pipe axis of the straight pipe. It is formed along the direction, and the adhesive is formed inside the notch.

  Thereby, since the difference between the shrinkage rate of the base and the shrinkage rate of the adhesive can be reduced, the warp of the LED lamp can be suppressed.

  Furthermore, in one aspect of the lamp according to the present invention, in the base, when the two surfaces facing the direction perpendicular to the tube axis of the straight tube are the first surface and the second surface, the notch Is preferably formed from the first surface to the second surface.

  Furthermore, in one aspect of the lamp according to the present invention, it is preferable that the notch is formed in a stripe shape.

  Furthermore, in one aspect of the lamp according to the present invention, it is preferable that the notch is formed in a direction perpendicular to the tube axis of the straight pipe.

  Furthermore, in one aspect of the lamp according to the present invention, it is preferable that a plurality of the notches are formed.

  Furthermore, in one aspect of the lamp according to the present invention, it is preferable that the surface of the base on the side facing the inner surface of the straight tube is substantially the same as the inner surface shape of the straight tube.

  Furthermore, in one aspect of the lamp according to the present invention, the base includes a curved surface portion whose surface facing the inner surface of the straight pipe of the base is substantially the same as the inner surface shape of the straight pipe, and the straight It is preferable that a recess is formed on a surface of the base opposite to the inner surface of the straight pipe along the tube axis direction of the tube, and the adhesive is further formed in the recess.

  Furthermore, in one aspect of the lamp according to the present invention, it is preferable that the adhesive is intermittently formed along a tube axis direction of the straight pipe.

  Furthermore, in one aspect of the lamp according to the present invention, the interval between the adhesives formed intermittently is more in the tube axis direction of the straight tube than in the central portion of the base in the tube axis direction of the straight tube. It is preferable that the end side of the base is smaller.

  Furthermore, in one aspect of the lamp according to the present invention, the base is preferably made of aluminum.

  Furthermore, in one aspect of the lamp according to the present invention, it is preferable that the adhesive is made of a silicone resin.

  Furthermore, in one aspect of the lamp according to the present invention, it is preferable that the straight tube is made of a glass tube.

  Moreover, the one aspect | mode of the illuminating device which concerns on this invention is equipped with the one aspect | mode of said lamp | ramp.

  According to the lamp and the lighting device according to the present invention, it is possible to suppress the occurrence of distortion in the lamp.

1 is a partially cutaway external perspective view showing a schematic configuration of an LED lamp according to a first embodiment of the present invention. (A) is a sectional side view of the LED lamp which concerns on the 1st Embodiment of this invention. (B) is an expanded sectional view of the LED lamp which concerns on the 1st Embodiment of this invention cut | disconnected along the B-B 'line | wire of (a). (C) is an expanded sectional view of the LED lamp which concerns on the 1st Embodiment of this invention cut | disconnected along the C-C 'line | wire of (a). It is an expansion perspective view which shows the structure of the base in the LED lamp which concerns on the 1st Embodiment of this invention. (A) And (b) is a figure for demonstrating the mode at the time of adhesive material hardening in the LED lamp which does not provide a notch part in a base. (C) is a figure for demonstrating the mode at the time of adhesive material hardening in the LED lamp which concerns on the 1st Embodiment of this invention. (A) is a sectional side view of the LED lamp which concerns on the 2nd Embodiment of this invention. (B) is an expanded sectional view of the LED lamp which concerns on the 2nd Embodiment of this invention cut | disconnected along the B-B 'line | wire of (a). (C) is an expanded sectional view of the LED lamp which concerns on the 2nd Embodiment of this invention cut | disconnected along the C-C 'line of (a). It is a figure which shows the structure of the base in the LED lamp which concerns on the 2nd Embodiment of this invention. (A) is a sectional side view of the LED lamp which concerns on the 3rd Embodiment of this invention. (B) is an expanded sectional view of the LED lamp which concerns on the 3rd Embodiment of this invention cut | disconnected along the B-B 'line | wire of (a). (C) is an expanded sectional view of the LED lamp which concerns on the 3rd Embodiment of this invention cut | disconnected along the C-C 'line | wire of (a). (A) is a figure which shows the structure of the base in the LED lamp which concerns on the 3rd Embodiment of this invention. (B) is a partially enlarged perspective view of (a). It is a reverse view of the LED lamp which concerns on the 4th Embodiment of this invention. It is a perspective view which shows the structure of the illuminating device which concerns on the 5th Embodiment of this invention. It is sectional drawing of the LED lamp which concerns on the modification 1 of this invention. It is sectional drawing of the LED lamp which concerns on the other modification 1 of this invention. (A) is a perspective view of the LED lamp which concerns on the modification 2 of this invention. (B) is sectional drawing of the LED lamp which concerns on the same modification 2 cut | disconnected along X-X 'of (a). It is a perspective view of the LED module which concerns on the modification 3 of this invention. It is a perspective view which shows the internal structure of the LED lamp which concerns on the modification 4 of this invention. It is a perspective view which shows in detail the internal structure of the end of the LED lamp which concerns on the modification 5 of this invention. It is a perspective view which shows in detail the internal structure of the nozzle | cap | die of the one end of the LED lamp which concerns on the modification 5 of this invention. In the LED lamp which concerns on the modification 5 of this invention, it is a perspective view of the nozzle | cap | die which was provided in the end of the straight pipe and was integrated. (A) is the perspective view of the nozzle | cap | die disassembled provided in the other end of the straight pipe | tube in the LED lamp which concerns on the modification 6 of this invention. (B) is the perspective view of the nozzle | cap | die which was provided in the other end of the straight pipe in the LED lamp which concerns on the modification 6 of this invention, and was integrated. (A) is sectional drawing which shows an example of straight tube | pipe type LED. (B) is sectional drawing of straight tube | pipe type LED cut | disconnected along the B-B 'line | wire of (a).

  Hereinafter, an LED lamp and an illumination device according to an embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
First, the LED lamp 1 which concerns on the 1st Embodiment of this invention is demonstrated using FIG. FIG. 1 is a partially cutaway external perspective view showing a schematic configuration of an LED lamp according to a first embodiment of the present invention.

  As shown in FIG. 1, an LED lamp 1 according to a first embodiment of the present invention is a straight tube type LED lamp having substantially the same shape as a straight tube fluorescent lamp, and includes a long tubular straight tube 10 and a plurality of straight tube types. Each LED module 20, a base 30 on which the plurality of LED modules 20 are mounted, and an adhesive 40 (not shown) that bonds the straight tube 10 and the base 30 to each other are provided. Furthermore, the LED lamp 1 includes a pair of caps 50 a and 50 b mounted on both ends of the straight tube 10.

  In addition, a lighting circuit (not shown) for receiving power supply via the caps 50a and 50b and causing the LEDs of the LED module 20 to emit light is installed inside or outside the LED lamp 1. The lighting circuit can be configured by a rectifier circuit including a diode bridge using four Zener diodes, for example.

  Next, each component of the LED lamp shown in FIG. 1 will be described in detail with reference to FIGS. 2 (a) to 2 (c). FIG. 2A is a side sectional view of the LED lamp according to the first embodiment of the present invention. FIG. 2B is an enlarged cross-sectional view of the LED lamp according to the first embodiment of the present invention cut along the line B-B ′ of FIG. FIG.2 (c) is an expanded sectional view of the LED lamp which concerns on the 1st Embodiment of this invention cut | disconnected along C-C 'line | wire of Fig.5 (a). 2A is a cross-sectional view taken along the line AA ′ in FIG. 2B, and is a plane that passes through the tube axis of the straight pipe and is cut along a plane perpendicular to the base. It is sectional drawing.

  First, the straight pipe 10 will be described. As shown in FIGS. 2A to 2C, the straight pipe 10 is a long cylindrical body having openings at both ends, and the cross-sectional shape thereof is an annular shape. The straight tube 10 can be formed of a glass tube or a plastic tube.

In the present embodiment, the straight tube 10 is a glass tube having a Young's modulus of 70000 [MPa], and is made of, for example, soda-lime glass in which silica (SiO ₂ ) is composed of 70 to 72 [%]. The straight pipe 10 has the same dimensional standard as that of the straight pipe before sealing both ends used for manufacturing a fluorescent lamp specified in JIS (Japanese Industrial Standard). For example, a glass tube having a length of 1198 [mm], an outer diameter of 30 [mm], and a thickness of 0.7 [mm] can be used. In addition, the inner surface of the straight tube 10 such as a glass tube is subjected to diffusion treatment by applying silica, calcium carbonate, or the like as necessary.

  Moreover, it is preferable that the outer surface or inner surface of the straight pipe 10 is subjected to a diffusion treatment. Thereby, the light emitted from the LED module 20 can be diffused.

  Next, the LED module 20 will be described. Each LED module 20 is a line-shaped light emitting module, and encloses a long plate-shaped mounting substrate 21 (LED mounting substrate) 21, a plurality of LEDs 22 mounted on the mounting substrate, and a plurality of LEDs 22. Sealing member 23 to be provided.

  In each LED module 20, the mounting substrate 21 can be a ceramic substrate, a resin substrate, a glass substrate, or the like made of translucent aluminum nitride or alumina. The mounting substrate 21 has a size that can be disposed inside the straight pipe 10, has a width and thickness smaller than the inner diameter of the straight pipe 10, and has a length shorter than the length of the straight pipe 10. It is done. In the present embodiment, the mounting substrate 21 has a long side (length in the longitudinal direction) of 140 [mm], a short side (length in the short direction) of 7 [mm], and a thickness of 1 [mm]. A shaped ceramic substrate was used.

  The plurality of LEDs 22 are mounted in a straight line (one-dimensional shape) in a line along the longitudinal direction of the mounting substrate 21. The LED 22 is a bare chip that emits monochromatic visible light, and is flip-chip mounted or wire-bonded mounted on a wiring pattern (not shown) formed on the mounting substrate 21. For example, a blue LED chip that emits blue light is used as the LED 22. As the blue LED chip, a gallium nitride based semiconductor light emitting element having a central wavelength of 440 nm to 470 nm, which is made of an InGaN based material, can be used. In the present embodiment, 24 LEDs 22 are mounted on one LED module 20.

  The sealing member 23 has a substantially semicircular dome shape with a convex cross section, and is formed in a stripe shape so as to cover all the LEDs 22 on the mounting substrate 21. The sealing member 23 is a phosphor-containing resin containing a phosphor that is a wavelength converter, and functions as a wavelength conversion layer that converts the wavelength of light from the LED 22 and seals and protects the LED 22. . For example, when the LED is a blue LED, the sealing member 23 is a phosphor in which YAG (yttrium, aluminum, garnet) phosphor material and yellow phosphor fine particles are dispersed in a silicone resin in order to obtain white light. A containing resin can be used.

  Next, the base 30 will be described. As shown in FIGS. 2A to 2C, the base 30 is a long substrate (LED module mounting substrate) on which a plurality of LED modules 20 are placed. It also functions as a radiator for dissipating the heat. Therefore, the base 30 is preferably made of a highly heat conductive material such as metal. In this embodiment, a long plate-like aluminum substrate made of aluminum having a Young's modulus of 70000 [MPa] is used. Thus, by interposing the base 30 between the straight tube 10 and the LED module 20, the heat of the LED module 20 can be efficiently guided to the straight tube 10. Thereby, the heat of the LED module 20 can be radiated from the outer surface of the straight pipe 10.

  Here, the base 30 will be described in detail with reference to FIG. FIG. 3 is a diagram showing the configuration of the base 30 in the LED lamp according to the first embodiment of the present invention.

  The base 30 has a long plate shape along the tube axis direction of the straight pipe 10, and as shown in FIG. 3, on one surface (surface) of the base 30, a flat flat portion is provided. A configured LED module mounting surface 31 for mounting the LED module 20 is formed. On the LED module mounting surface 31, a plurality of LED modules 20 are mounted in a line (one-dimensional shape) in a line in the longitudinal direction of the base 30 (the tube axis direction of the straight pipe). In the present embodiment, eight LED modules 20 are placed on the base 30.

  Each LED module 20 has a fixing member (not shown) including a pressing resin member for pressing the surface of the mounting substrate 21 from above and a pressing plate made of a plate spring for pressing the pressing resin member from above. Is fixed to the base 30. Further, the pressing resin member has not only a function of fixing the mounting substrate 21 but also a function of electrically connecting adjacent LED modules 20. Note that the LED module 20 and the base 30 can be fixed by an adhesive or the like without using the pressing member.

  On the other hand, as shown in FIG. 3, a notch 32 is formed on the other surface (back surface) of the base 30, which is the surface facing the inner surface of the straight pipe 10. The notch 32 is formed along a direction intersecting with the tube axis of the straight pipe 10, and in this embodiment, as shown in FIG. A plurality of stripes are formed along the direction parallel to the short side direction of 30. The direction intersecting the tube axis of the straight pipe 10 means a direction intersecting the tube axis.

  In the present embodiment, the notch 32 is formed so as to cross the opposing long side of the base 30. That is, the notch 32 has two long side surfaces facing the direction perpendicular to the tube axis of the straight pipe 10 in the base 30 as the first surface 33a and the second surface 33b. As shown, it is formed without interruption from the first surface 33a to the second surface 33b.

  The shape of the cutout portion 32 configured in this way is a concave shape when the cross section when cut in a direction perpendicular to the tube axis of the straight pipe 10 is a plane when the base 30 is viewed from the back surface. The visual shape is rectangular. As specific dimensions of the notch 32, for example, the notch depth in the notch cross-sectional shape can be 2 [mm], and the length of the bottom can be 15 [mm].

  Next, the adhesive 40 will be described. As shown in FIGS. 2A to 2C, the adhesive 40 is formed between the back surface of the base 30 and the inner surface of the straight pipe 10 in order to bond and fix the base 30 and the straight pipe 10. Arranged between. Moreover, the adhesive 40 is also formed in the notch 32 as shown in FIG. That is, when the straight pipe 10 and the base 30 are bonded, the adhesive 40 is also applied or flows into the notch 32.

  As the adhesive 40, it is preferable to use a material having a thermal conductivity of 1 [W / m · K] or more from the viewpoint of heat dissipation, and from the viewpoint of weight reduction, an adhesive having a specific gravity of 2 or less. Is preferably used. As the adhesive 40, for example, an adhesive made of silicone resin or cement is used. In the present embodiment, an adhesive made of a silicone resin is used as the adhesive 40 in order to reduce the weight of the LED lamp 1.

  In order to increase the thermal conductivity of the adhesive 40, it is preferable to mix inorganic particles in the adhesive 40 as appropriate. As the inorganic particles, metal particles such as silver, copper or aluminum, or non-metal particles such as alumina, aluminum nitride, silicon carbide or graphite are used.

  Next, the caps 50a and 50b will be described. As shown in FIG. 2A, each of the bases 50a and 50b includes a bottomed cylindrical base body 51a (51b) and a pair of bases extending outward from the outer surface of the bottom of the base body 51a (51b). Pins 52a (52b). The bases 50a and 50b are fixed to the reduced diameter portion of the straight pipe 10 with an adhesive or the like. The bases 50a and 50b can be appropriately selected according to the lighting fixture to which the LED lamp 1 is mounted. For example, a G-type base or the like is used.

  Power can be supplied to the LED module 20 by the pair of cap pins 52a (52b). In this case, power may be supplied to the LED module 20 from both the base 50a and the base 50b, or from only one of the base 50a and the base 50b. Good. In the latter case, the other base is used to attach to the luminaire.

  In the present embodiment, electric power is supplied only from the base 50 a, and two wires (lead wires) 71 a and 72 a connected to each of the pair of base pins 52 a are arranged in the straight pipe 10. In addition, one of the two wirings 71a and 72a is electrically connected to a wiring terminal of the mounting substrate 21 of the LED module 20 placed at a location closest to the base 50a. On the other hand, the other wiring 72a is extended to the side of the base 50b opposite to the base 50a, and the LED module 20 (the LED module on the side of the base 50b) placed at the farthest position from the base 50a is mounted. It is electrically connected to the wiring terminal of the substrate 21.

  By connecting the wirings 71a and 72a to the LED module 20 in this way, all the LEDs 22 in the straight pipe 10 can be connected in series, and power is supplied to all the LEDs 22 in the straight pipe 10 by the wirings 71a and 72a. Can be supplied.

  Next, a method for manufacturing the LED lamp 1 according to the first embodiment of the present invention will be described below.

  First, a predetermined number of LED modules 20 are mounted on the base 30 and the LED modules 20 are fixed to the base 30 by a predetermined fixing method such as a fixing member.

  Next, a predetermined amount of adhesive 40 is applied to the entire back surface of the base 30. As the adhesive 40, a silicone resin adhesive was used.

  Next, the base 30 to which the adhesive 40 is applied is inserted through one opening of the straight pipe 10 made of a glass tube, and the base 30 is disposed at a predetermined position in the straight pipe 10.

  Next, the adhesive 40 is cured by a predetermined method. Thereby, the straight pipe 10 and the base 30 can be fixed. The behavior when the adhesive is cured at this time will be described with reference to FIGS. 4 (a) to 4 (c). 4 (a) and 4 (b) illustrate how the adhesive is cured in an LED lamp that does not have a notch in the base, as shown in FIGS. 11 (a) and 11 (b). It is a figure for doing. FIG.4 (c) is a figure for demonstrating the mode at the time of adhesive material hardening in the LED lamp 1 which concerns on the 1st Embodiment of this invention. In FIGS. 4A to 4C, only the straight pipe, the adhesive, and the base are illustrated.

  As shown in FIG. 4A, in the LED lamp 100 in the case where notches are not provided in the base 130, the heat shrinkage rate of the base 130 made of aluminum and the adhesive 140 when the adhesive 140 is cured. Is larger than the thermal contraction rate of the straight tube 110 made of glass, and the whole portion is warped so that the central portion of the straight tube 110 is lifted. Moreover, depending on the material of the base 130, as shown in FIG.4 (b), the both ends of the straight pipe | tube 110 may warp upward. This is considered to occur for the following reason.

When the adhesive 140 is cured, the compressive stress σ _bnd due to the adhesive 140 is applied to the base 130 and the straight pipe 110 by the contraction action of the adhesive 140. Here, since the Young's modulus E _Al of the base 130 made of _aluminum is smaller than the Young's modulus E _G of the straight tube 110 made of glass, the compressive strain ε of the base 130 due to the compressive stress σ _bnd of the adhesive 140 _Al becomes larger than the compressive strain ε _G of the straight pipe 110 due to the compressive stress σ _bnd of the adhesive 140. Further, since the base 130 is a long plate having a large aspect ratio, the base 130 is easily bent in the direction perpendicular to the substrate surface. Therefore, when the base 130 is made of aluminum, the entire LED lamp 100 is warped as shown in FIG.

  On the other hand, as described above, in the LED lamp 1 according to the first embodiment of the present invention, the notch 32 is formed on the back surface of the base 30. Thereby, as shown in FIG.4 (b), the curvature of the LED lamp 1 can be suppressed and it can suppress that distortion generate | occur | produces in the LED lamp 1. FIG.

  That is, in this embodiment, since the region where the thickness of the adhesive 40 is different can be formed by the notch 32, the difference between the shrinkage rate of the adhesive 40 and the shrinkage rate of the base 30 can be reduced. . Thereby, the curvature of the LED lamp 1 can be suppressed.

  After the adhesive 40 is cured, other parts such as the caps 50a and 50b are provided. Thereby, the LED lamp 1 can be completed.

  As mentioned above, according to the LED lamp 1 which concerns on the 1st Embodiment of this invention, since the notch part 32 is formed in the back surface of the base 30, the curvature of the LED lamp 1 is suppressed and distortion is carried out to the LED lamp 1. Can be prevented.

  Furthermore, in this embodiment, the contact area between the base 30 and the adhesive 40 can be increased by the notch 32. Thus, the heat dissipation of the base 30 can be improved by the notch 32. Thereby, deterioration of the LED module 20 can be suppressed.

  In the present embodiment, the wirings 71 a and 72 a are preferably arranged in a gap region between the straight pipe 10 and the back surface of the base 30 and embedded in the adhesive 40.

  Thus, for example, as shown in FIG. 2B, when it is desired to extend the wiring 72a from one base 50a side to the other base 50b side, the wiring 72a is connected to the base using the above gap region. It can extend from the 50a side to the base 50b side. That is, the wiring 72 a is arranged in the gap region, and the wiring 72 a extends from one end of the base 30 to the other end.

  Thus, by arranging the wiring 72 a in the gap area on the back side of the base 30, the wiring 72 a is not arranged on the light irradiation side of the LED module 20. Therefore, it is possible to prevent adverse effects such as the light emitted from the LED module 20 being shielded by the wiring or the light orientation being deteriorated.

  Furthermore, the wiring 72 a can be hidden by arranging the wiring 72 a in the gap region and embedding it with the adhesive 40. Thereby, since it becomes impossible to visually recognize the wiring 72a from the outside of the straight pipe | tube 10, the beauty | look of the LED lamp 1 can also be improved.

(Second Embodiment)
Next, an LED lamp 1A according to a second embodiment of the present invention will be described with reference to FIGS. 5 (a) to 5 (c) and FIG. FIG. 5A is a side sectional view of an LED lamp according to the second embodiment of the present invention. FIG.5 (b) is an expanded sectional view of the LED lamp which concerns on the 2nd Embodiment of this invention cut | disconnected along the BB 'line | wire of Fig.5 (a). FIG.5 (c) is an expanded sectional view of the LED lamp which concerns on the 2nd Embodiment of this invention cut | disconnected along CC 'line of Fig.5 (a). 5A is a cross-sectional view taken along the line AA ′ in FIG. 5B. Moreover, FIG. 6 is a figure which shows the structure of the base in the LED lamp which concerns on the 2nd Embodiment of this invention.

  The LED lamp 1A according to the second embodiment of the present invention has the same basic configuration as the LED lamp 1 according to the first embodiment of the present invention. Therefore, in FIGS. 5A to 5C and FIG. 6, the same components as those shown in FIGS. 2A to 2C and FIG. Detailed description will be omitted or simplified.

  The LED lamp 1A according to the second embodiment of the present invention is different from the LED lamp 1 according to the first embodiment of the present invention in the configuration of a base 30A (base). Other configurations are basically the same as those in the first embodiment.

  As shown in FIG. 6, the base 30 </ b> A in the LED lamp 1 </ b> A according to this embodiment has a substantially semi-cylindrical shape as a whole, and the surface of the base 30 </ b> A (LED module mounting surface 31) is the same as that of the first embodiment. Similarly, the surface (back surface) facing the inner surface of the straight tube 10 of the base 30A is a cylinder having substantially the same shape as the inner surface of the straight tube 10 except for the portion where the notch 32A is formed. Surface.

  On the back surface of the base 30A, a notch 32A is formed along the direction intersecting the tube axis of the straight tube 10. In the present embodiment, as shown in FIG. 6, a plurality of cutout portions 32 </ b> A are formed along a direction substantially orthogonal to the tube axis of the straight tube 10. The notch 32A is formed so as to cross the facing surface portion (columnar portion) of the base 30A. The shape of the cutout portion 32A configured as described above is a shape in which a cylindrical portion is cut out in a direction perpendicular to the tube axis, and a cross-sectional shape in a plane perpendicular to the tube axis is a semicircular shape.

  In this embodiment, the adhesive 40 is formed between the cylindrical surface on the back surface of the base 30A and the inner surface of the straight pipe 10 as shown in FIGS. 5 (a) to 5 (c). It is also formed in the notch 32A.

  As described above, the LED lamp 1 </ b> A according to the second embodiment of the present invention has the same effects as the LED lamp 1 according to the first embodiment. That is, the notch 32A suppresses the warp of the LED lamp 1A and suppresses the distortion of the LED lamp 1A.

  Furthermore, in this embodiment, the back surface shape of the base 30 </ b> A other than the region where the notch 32 </ b> A is formed is the same shape as the inner surface of the straight pipe 10. Thereby, since the gap area surrounded by the back surface of the base 30 and the inner surface of the straight pipe 10 can be eliminated, the application amount of the adhesive 40 can be reduced as compared with the first embodiment. Therefore, since the shrinkage effect of the adhesive 40 when the adhesive 40 is cured can be reduced, the warp of the LED lamp can be further suppressed.

  Furthermore, since the cross-sectional shape of the base 30A according to this embodiment is a substantially semi-cylindrical shape, it is possible to suppress the occurrence of warping with respect to the plate-like base. Thereby, the curvature of an LED lamp can be further suppressed by the synergistic effect with reduction of the notch part 32A and the adhesive material 40. FIG.

  Further, according to the LED lamp 1A according to the present embodiment, the base 30A has the cutout portion 32A having the above-described configuration, and therefore, the contact area between the base 30A and the adhesive 40 as compared with the first embodiment. Can be further increased, and the distance between the base 30A and the straight pipe 10 can be reduced by the cylindrical shape of the back surface. Thereby, the heat dissipation of the LED module 20 can also be improved.

  The LED lamp 1A according to the present embodiment can be manufactured by the same method as the LED lamp 1 according to the first embodiment.

(Third embodiment)
Next, an LED lamp 1C according to a third embodiment of the present invention will be described with reference to FIGS. 7 (a) to 7 (c) and FIGS. 8 (a) to 8 (b). FIG. 7A is a side sectional view of an LED lamp according to the third embodiment of the present invention. FIG.7 (b) is an expanded sectional view of the LED lamp which concerns on the 3rd Embodiment of this invention cut | disconnected along the BB 'line | wire of Fig.7 (a). FIG.7 (c) is an expanded sectional view of the LED lamp which concerns on the 3rd Embodiment of this invention cut | disconnected along CC 'line of Fig.7 (a). FIG. 7A is a cross-sectional view taken along the line AA ′ in FIG. Moreover, Fig.8 (a) is a figure which shows the structure of the base in the LED lamp which concerns on the 3rd Embodiment of this invention. FIG.8 (b) is an enlarged view which shows the structure of the base in the LED lamp which concerns on the 3rd Embodiment of this invention.

  The LED lamp 1B according to the third embodiment of the present invention has the same basic configuration as the LED lamp 1 according to the first embodiment of the present invention. Accordingly, in FIGS. 7A to 7C and FIGS. 8A and 8C, the same components as those shown in FIGS. 2A to 2C and FIG. Are denoted by the same reference numerals, and detailed description thereof will be omitted or simplified.

  The LED lamp 1B according to the third embodiment of the present invention is different from the LED lamp 1 according to the first embodiment of the present invention in the configuration of a base 30B (base). Other configurations are basically the same as those in the first embodiment.

  As shown in FIG. 8A, in the base 30B of the LED lamp 1B according to the present embodiment, the surface (LED module mounting surface 31) is a plane as in the first and second embodiments. . Further, a locking portion 34 for fixing one of the long side end portions (end portions in the width direction) of the mounting substrate 21 in the LED module 20 is formed on the surface side of the base 30B. In the present embodiment, as shown in FIG. 8B, the locking portion 34 is configured to lock one of the long side end portions of the mounting substrate 21. Although not shown, the other of the long side end portions of the mounting substrate 21 is fixed by the fixing member described above.

  On the other hand, as shown in FIGS. 8A and 8B, a notch 32B is formed on the back surface of the base 30B, and the base is provided along the tube axis direction of the straight pipe 10. A stripe-shaped recess 35 is formed without interruption from one end to the other end of both short sides of 30B.

  The cutout portion 32B is formed along the direction intersecting the tube axis of the straight pipe 10 as in the first and second embodiments. In this embodiment, as shown in FIG. A plurality of straight pipes 10 are formed along a direction substantially perpendicular to the pipe axis. The notch 32B is formed so as to cross the opposed long side portion of the base 30B, as in the first and second embodiments.

  As for the recess 35, as shown in FIG. 7 (c), the cross-sectional shape (region other than the notch 32B) cut by a plane perpendicular to the tube axis has a substantially concave shape having a bottom surface and inner surfaces on both sides. It is comprised so that it may become a shape. The concave portion 35 configured as described above is a region where the adhesive 40 is applied, and the adhesive 40 is recessed when the base 30B to which the adhesive 40 is applied is inserted into the straight pipe 10 and disposed. It is configured not to leak into any other area. That is, the adhesive 40 is arranged in a region (space) surrounded by the recess 35 and the inner surface of the straight pipe 10. Specifically, both inner side surfaces of the recess 35 function as a guide for restricting the spread of the adhesive 40 in the direction perpendicular to the tube axis, thereby suppressing the adhesive 40 from leaking out of the recess 35. . As the dimensions of such a recess 35, for example, the depth can be 1 [mm] and the base can be 8 [mm].

  Furthermore, the adhesive material 40 is also configured not to leak out in the region where the notch 32B is formed. That is, as shown in FIG. 7B, since the edge of the notch 32B is in contact with the straight pipe 10, the area surrounded by the notch 32B and the straight pipe 10 is a closed area. . Thereby, it can suppress that the adhesive material 40 leaks out from the area | region enclosed by the notch part 32B and the straight pipe 10. FIG.

  Further, as shown in FIG. 7C, a cylinder configured so that the region other than the region where the notch 32 </ b> B and the recess 35 are formed on the back surface of the base 30 matches the inner surface shape of the straight pipe 10. It is comprised by the curved surface part 36 which has a surface shape. Therefore, the curvature of the outer surface shape of the curved surface portion 36 is the same as the curvature of the inner surface of the straight pipe, and in this embodiment, the outer surface shape of the curved surface portion 36 has a curvature (radius) that is half the inner diameter of the straight tube 10. It has a circular arc shape. As shown in FIG. 7C, the base 30 </ b> B is disposed so that the curved surface portion 36 is in contact with the inner surface of the straight pipe 10, and between the curved surface portion 36 and the inner surface of the straight tube 10. The adhesive 40 does not exist.

  In the present embodiment, the adhesive 40 is disposed in a closed region between the back surface of the base 30 </ b> B and the inner surface of the straight pipe 10, as shown in FIGS. 7 (a) to 7 (c). As a result, the adhesive 40 does not leak into a region other than the region between the base 30 </ b> B and the straight pipe 10.

  As described above, the LED lamp 1B according to the third embodiment of the present invention has the same effects as the LED lamp 1 according to the first embodiment, and suppresses the warp of the LED lamp 1B by the notch 32B. Strain is prevented from occurring in the LED lamp 1B.

  Moreover, since the base 30B according to the present embodiment has the curved surface portion 36 and the cross-sectional shape is a substantially semi-cylindrical shape, it is possible to suppress the occurrence of warping with respect to the plate-like base. Thereby, the curvature of an LED lamp can be further suppressed by the synergistic effect with the notch part 32B.

  Moreover, in this embodiment, since the shape of the curved-surface part 36 is the same shape as the inner surface of the straight pipe 10, the application quantity of the adhesive material 40 can be reduced compared with 1st Embodiment. Therefore, the shrinkage action of the adhesive 40 when the adhesive 40 is cured can be reduced, and the warp of the LED lamp can be further suppressed.

  Furthermore, according to the LED lamp 1B according to the present embodiment, since the concave portion 35 in which the adhesive material 40 is disposed is formed on the back surface of the base 30B, the adhesive material 40 leaks to other than the notch portion 32B and the concave portion 35. Can be suppressed. Thereby, the adhesive 40 does not spread to a region other than the region between the back surface of the base 30 </ b> B and the inner surface of the straight pipe 10. Accordingly, it is possible to suppress deterioration of the light alignment characteristics of the LED lamp 1B, and it is possible to improve the aesthetic appearance of the LED lamp 1B.

  Further, according to the LED lamp 1 </ b> B according to the present embodiment, the base 30 </ b> B is in direct contact with the straight pipe 10 through the curved surface portion 36. Thereby, compared with 1st and 2nd embodiment, the heat dissipation of the LED module 20 can be improved further.

  The LED lamp 1B according to the present embodiment can be manufactured by the same method as the LED lamp 1 according to the first embodiment.

(Fourth embodiment)
Next, an LED lamp 1C according to a fourth embodiment of the present invention will be described with reference to FIG. FIG. 9 is a rear view of an LED lamp according to the fourth embodiment of the present invention.

  The LED lamp 1C according to the fourth embodiment of the present invention has the same basic configuration as the LED lamp 1 according to the first embodiment of the present invention. Accordingly, in FIG. 9, the same components as those shown in FIGS. 2A to 2C and FIG. 3 are denoted by the same reference numerals, and detailed description thereof is omitted or simplified.

  The LED lamp 1C according to the fourth embodiment of the present invention is different from the LED lamp 1 according to the first embodiment of the present invention in the configuration of the adhesive. Other configurations are basically the same as those in the first embodiment.

  As shown in FIG. 9, in the LED lamp 1 </ b> C according to this embodiment, the adhesive 40 </ b> C is intermittently formed along the longitudinal direction of the base 30 (the tube axis direction of the straight pipe 10) on the back surface of the base 30. Is formed. In the present embodiment, the adhesive 40 </ b> C is formed so as to straddle the notch 32 on the back surface of the base 30. That is, there is a region where the adhesive 40C is not formed in a region between the adjacent cutout portions 32.

  As described above, according to the LED lamp 1C according to the fourth embodiment of the present invention, since the adhesive 40 is formed intermittently in the tube axis direction, the tube axis of the adhesive 40 when the adhesive 40 is cured. The contraction effect on the entire base 30 in the direction can be reduced. Thereby, the curvature of LED lamp 1C can be suppressed and it can suppress that distortion generate | occur | produces in LED lamp 1C.

  The interval between the adjacent adhesives 40C is formed so that the end side (short side) of the base 30 in the tube axis direction is smaller than the central portion of the base 30 in the tube axis direction. Is preferred. This is because the temperature of the base 30 is higher at the center than at the end. With this configuration, the contraction action of the adhesive 40C on the entire base 30 can be further reduced, so that the warp of the LED lamp 1C can be further suppressed.

  Moreover, in this embodiment, in order to improve the thermal conductivity between the base 30 and the straight pipe 10, the temperature at a location where the adhesive material between the base 30 and the straight pipe 10 is not formed. It is preferable to provide thermally conductive grease (for example, TIS380C manufactured by Momentive, Inc.) that does not solidify even when the temperature is increased.

  The present embodiment can also be applied to the LED lamps according to the second and third embodiments.

(Fifth embodiment)
Next, the illuminating device which concerns on the 5th Embodiment of this invention is demonstrated using FIG. FIG. 10 is a perspective view showing a configuration of a lighting apparatus according to the fifth embodiment of the present invention.

  The lighting device 2 according to the fifth embodiment of the present invention includes the LED lamp 1 according to the first embodiment and a lighting fixture 3.

  The lighting fixture 3 is electrically connected to the LED lamp 1 and includes a pair of sockets 4 for holding the LED lamp 1, a fixture body 5 to which the socket 4 is attached, and a circuit box (not shown). Prepare. The inner surface 5a of the instrument main body 5 is a reflecting surface that reflects light emitted from the LED lamp 1 in a predetermined direction (for example, downward). The circuit box houses therein a lighting circuit that supplies power to the LED lamp 1 when a switch (not shown) is in an on state and does not supply power in an off state. The lighting fixture 3 is mounted on a ceiling or the like via a fixture.

  In this embodiment, the LED lamp 1 according to the first embodiment is used as the LED lamp. However, the LED lamps 1A to 1C according to the second to fourth embodiments may be used.

(Modification)
Next, modified examples of the LED lamp according to the embodiment of the present invention described above will be described below. In addition, each modification can also be applied to the illumination device according to the fifth embodiment.

(Modification 1)
First, LED lamp 1D which concerns on the modification 1 of this invention is demonstrated using FIG.11 and FIG.12. FIG.11 and FIG.12 is sectional drawing of the LED lamp which concerns on the modification 1 of this invention.

  The LED lamp 1D according to the first modification has the same basic configuration as the LED lamp 1 according to the first embodiment of the present invention. Therefore, in FIG. 11, the same components as those shown in FIG. 2 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 11, in the base 30 </ b> D of the LED lamp 1 </ b> D according to the first modification, the notch 32 </ b> D is provided so as to be positioned at the center of each LED module 20. The central portion of the LED module 20 is easily subjected to thermal stress due to heat generated from the LED module 20. Therefore, the warp of the LED lamp 1D can be further suppressed by providing the notch 32D on the base 30 so as to be positioned at the center of each LED module 20.

  In FIG. 11, one notch 32 </ b> D is provided so as to correspond to the central portion of the LED module 20, but as illustrated in FIG. 12, the base is configured to correspond to the central portion of the LED module 20. A plurality of notches 32E may be provided in 30E. Thereby, the curvature of LED lamp 1E can further be suppressed.

(Modification 2)
Next, LED lamp 1X which concerns on the modification 2 of this invention is demonstrated using Fig.13 (a) and FIG.13 (b). Fig.13 (a) is a perspective view of the LED lamp which concerns on the modification 2 of this invention. Moreover, FIG.13 (b) is sectional drawing of the LED lamp which concerns on the modification 2 cut | disconnected along XX 'of Fig.13 (a).

  As shown in FIGS. 13A and 13B, an LED lamp 1X according to the second modification of the present invention includes a metal housing 30X made of metal such as aluminum and a cover attached to the metal housing 30X. 10X.

  The metal housing 30X has a substantially semi-cylindrical shape, and the LED module 20X is mounted on the surface that is covered with the cover 10X. As the LED module 20X, the LED module 20 according to the embodiment of the present invention described above can be used. Further, the cylindrical surface portion of the metal housing 30X is exposed to the outside, and heat generated in the LED module 20X is released from the exposed portion.

  The cover 10X has a substantially semi-cylindrical shape and is made of a synthetic resin such as plastic.

  A bottomed cylindrical base 50X is attached to both ends of the cover 10X and the metal housing 30X. The base 50X can have the same configuration as the bases 50a and 50b according to the above-described embodiments of the present invention.

(Modification 3)
In the LED lamp 100 of the present embodiment, the LED module 20 is assumed to be a COB type (Chip On Borad) in which the LED itself (bare chip) is directly mounted on the substrate. However, the LED module 300 is a package type in which an LED chip is mounted in a cavity molded with a resin or the like, and the inside of the cavity is sealed with a phosphor-containing resin, that is, a surface mount type (SMD: Surface Mount Device). May be.

  The SMD type LED module 300 according to the third modification of the present invention will be described with reference to FIG. FIG. 14 is a perspective view of an LED module according to Modification 3 of the present invention.

  As shown in FIG. 14, in the LED module 300 according to this modification, a plurality of packages 390 are formed on the surface of the substrate 301 by a die attach agent or the like in the longitudinal direction of the substrate 301 (a direction parallel to the tube axis direction of the straight tube 10). ) Are mounted in a straight line in a row.

  The package 390 is made of resin or the like, and the LED chip 321 is mounted in the cavity. The mounted LED chip 321 is covered with a phosphor-containing resin 320. The plurality of packages 390 are electrically connected to each other by a wiring pattern, a wire, and the like, and are also electrically connected to the external terminal 391.

(Modification 4)
In the LED lamp 1 according to the above-described embodiment, the method for fixing the LED module 20 is not particularly shown, but can be fixed as follows. FIG. 15 is a perspective view showing an internal configuration of an LED lamp according to Modification 4 of the present invention. In FIG. 15, the inside of the LED lamp is shown with the base omitted and the straight tube 10 being transparent.

  In the fourth modification, one end in the short-side direction of the plurality of mounting boards 21 (LED modules 20) may be commonly held by the base 30 by the first module fixing member 305. The first module fixing member 305 is provided on the surface of the base 30, and fixes one end of the plurality of mounting boards 21 in the short direction to the surface of the base 30. The first module fixing member 305 may be configured such that wires 500 such as wires and patterns that electrically connect the plurality of mounting boards 21, and wirings are not formed inside the plurality of mounting boards 21 provided in common. It consists of a flexible resin component 501 (resin cover). The resin component 501 is a component common to adjacent mounting boards 21, and is fixed by being screwed to the surface of the base 30 with the two mounting boards 21 being sandwiched between the bases 30. . At this time, the wiring 500 is sandwiched between the mounting substrate 21 and the resin component 501. Further, no wiring is formed inside the resin component 501.

  Further, the other end in the short direction of each of the plurality of mounting boards 21 (LED modules 20) may be held by the base 30 by the second module fixing member 503. Furthermore, one end of each of the plurality of mounting boards 21 (LED modules 20) in the short direction may be held by the base 30 by the third module fixing member 502.

  The second module fixing member 503 is provided on the surface of the base 30, and fixes the other end in the short direction of one mounting board 21 to the surface of the base 30. The mounting board 21 is connected to the base 30. It is comprised from the flexible resin component fixed by screwing to the surface of the base 30 in the state pinched | interposed between. No wiring is formed inside the resin component.

  The third module fixing member 502 is provided on the surface of the base 30 and fixes one end in the short direction of one mounting substrate 21 to the surface of the base 30. It is composed of a flexible resin component that is fixed to the surface of the base 30 by being screwed between them. No wiring is formed inside the resin component. As the 2nd module fixing member 503 and the 3rd module fixing member 502, the resin cover comprised by a flat plate can be used, for example.

  Here, the second module fixing member 503 and the third module fixing member 502 are opposed to substantially the vicinity of the center in the longitudinal direction of the mounting substrate 21 in order to reliably suppress the floating of the mounting substrate 21 from the surface of the base 30. Is provided.

  According to the LED lamp according to the fourth modification, the mounting substrate 21 (LED module 20) can be strongly fixed to the base 30, so that variations in light emitting points can be suppressed.

  In the present modification, the first module fixing member 305 is configured to hold one end in the short direction of the plurality of mounting boards 21 (LED modules 20) to the base 30, but if it can be fixed to the base 30, Not limited. For example, the first module fixing member 305 may be composed of solder or wiring that electrically connects adjacent LED modules 20 and white resin and transparent silicone resin that are formed so as to cover the solder or wiring. Good.

(Modification 5)
In the LED lamp of the present embodiment, one end in the longitudinal direction of the base 30 may be fixed to the inner surface of the straight pipe 10 by a base fixing member provided between the base 50 a and the end of the straight pipe 10.

  16 and 17 are perspective views showing a state in which the base fixing member 400 is attached to the straight pipe 10. In FIG. 16, the inside of the LED lamp is shown with the straight pipe 10 being transparent, and in FIG. 17, the straight pipe 10 and the members inside thereof are omitted.

  The base fixing member 400 is a member made of a flexible material, and projects from the main body 401 into the straight pipe 10 by covering the opening at the end of the straight pipe 10. The fixing portion 402 and the three locking portions 403 are provided. The base fixing member 400 is attached to the straight pipe 10 by fitting the fixing portion 402 and the three locking portions 403 into the straight pipe 10 to fit the end of the straight pipe 10.

  The main body 401 is provided with a through hole, and the wiring 205 from the pair of base pins 52a of the base 50a is passed through the through hole. The wiring 205 is electrically connected to the LED chip of the LED module 20.

  The main body 401 is sandwiched between two convex portions 210 and 211 provided on the inner wall of the base body 51a. At this time, a substrate 800 on which a lighting circuit is formed is provided inside the base body 51a provided at one end of the straight pipe 10, and the two convex portions 211 and 212 provided on the inner wall of the base body 51a are formed on the substrate 800. Is holding.

  The lighting circuit provided on the substrate 800 includes a rectifier circuit element 810 such as a diode bridge circuit, and an input / output unit 811 electrically connected to the rectifier circuit element 810 through a wiring provided on the substrate 800. . Short components such as the rectifier circuit element 810 include a space in the vicinity of the screw portion 820 on the substrate 800 (a screw portion (screw hole portion) 820 into which a screw for integrating the separated base is inserted, and the substrate 800. Between the two). The input / output unit 811 is electrically connected to the base pin 52a by welding, soldering, insertion, or the like, and at the same time, is electrically connected to the wirings 205c and 205d electrically connected to the LED chip of the LED module 20. The wirings 205 c and 205 d are guided from the substrate 800 to the inside of the straight tube 10 through the notch 812 provided in the substrate 800 and the gap 813 between the substrate 800 and the main body 401 of the base fixing member 400. It is burned.

  The base 30 is provided with a resin component 801 for fixing the LED module 20 (mounting substrate 21) to the base 30 by being screwed and fixed to the base 30. However, a part of the wiring 205c is mounted. It is sandwiched between the substrate 21 and the resin component 801, and one end thereof is joined to the terminal 309 on the mounting substrate 21. On the other hand, the wiring 205d passes through the gap between the base 30 and the base fixing member 400 and reaches a recess that runs in the tube axis direction provided on the surface facing the straight pipe 10 of the base 30 and passes through this recess. The LED module 20 provided at the other end of the straight pipe 10 is electrically connected.

  The base body 51a provided at one end of the straight pipe 10 is configured to be disassembled in half. As shown in FIG. 17, the base body 51a is in a state where the substrate 800 and the base fixing member 400 are disassembled. After that, as shown in the perspective view of FIG. 18, the other base body 51 a is fitted and integrated with the screw 803.

  Similarly, as shown in FIGS. 19 (a) and 19 (b), a base 50b provided at the other end of the straight pipe 10 is also composed of a base body 51b configured to be disassembled in half. Since the base body 51 b is provided with only one base pin 52 b, two screws 804 are arranged so as to sandwich the base pin 52 b, and the base body 51 b can be integrated by the two screws 804. A rotation prevention rib 821 and a retaining rib 822 are provided on the inner surface of the base body 51b. The rotation stop rib 821 meshes with an adhesive that bonds the base 50b to the straight tube 10 to prevent the base 50b and the straight tube 10 from idling when torque about an axis is applied to the LED lamp. On the other hand, the retaining rib 822 meshes with an adhesive that bonds the base 50b to the straight tube 10 to prevent the base 50b from coming out of the straight tube 10 when an axial force is applied to the LED lamp. The one cap pin 52b is provided for grounding and for attaching to a lighting fixture.

(Modification 6)
In the LED lamp 1C according to the above-described fourth embodiment of the present invention, the case where the base 30 provided with the notch 32 is used has been described, but the base is not provided with the notch. It doesn't matter.

  In other words, in this modification, a base that is not provided with a notch is used, and the adhesive applied between the back surface of the base and the inner surface of the straight pipe is the longitudinal direction of the base (the pipe axis of the straight pipe). It is comprised so that it may divide | segment into plurality along (direction). In this modification, the adhesive was intermittently formed along the longitudinal direction of the base. Also by this, the curvature of the LED lamp can be suppressed, and the occurrence of distortion in the LED lamp can be suppressed.

  In this case, the position where the adhesive is divided (the area where the adhesive is not formed) can be the central portion of the LED module. Since the heat of the LED module is higher in the central portion than in the end portion, it is possible to effectively reduce straight tube warpage.

  Or the position (area | region where the adhesive material is not formed) where an adhesive material is divided | segmented can also be made into the edge part of an LED module. In this case, compared with the case where the adhesive is divided at the center of the LED module, the effect of reducing straight pipe warpage is diminished, but the heat of the LED module is higher at the center than at the end. The temperature of the LED module can be effectively reduced.

  In this modification as well, in order to improve the thermal conductivity between the base and the straight pipe, thermally conductive grease that does not solidify even when the temperature is raised is provided in a place where the adhesive is not formed. It is preferable.

  As mentioned above, although the LED lamp and the illuminating device which concern on this invention were demonstrated based on embodiment, this invention is not limited to these embodiment. The present invention includes various modifications made by those skilled in the art without departing from the scope of the present invention. Moreover, you may combine each component in several embodiment arbitrarily in the range which does not deviate from the meaning of invention.

  In the present embodiment, the notch portion of the base is formed so as to be orthogonal to the tube axis of the straight pipe, but is not limited thereto. What is necessary is just to comprise a notch part so that it may cross | intersect the pipe axis of a straight pipe, for example, in FIG. 3, a notch part is formed in the diagonal direction toward the 2nd surface 33b from the 1st surface 33a of the base 30. can do. In this case, it is preferable to form the adjacent notch portions so as to be alternately symmetrical (for example, repeating a C-shape and a reverse C-shape). Thereby, the contraction effect | action received from an adhesive material can be made uniform with respect to a pipe-axis direction similarly to the case where it orthogonally crosses with a pipe axis.

  Moreover, in this embodiment, although the notch part was formed so that the opposing long side might be penetrated so that the opposing long side of a base might be crossed, it is not restricted to this. For example, it is possible to make a cut-out portion that is surrounded by the side surfaces without penetrating the opposing long side. However, the contraction action of the adhesive can be more effectively reduced by penetrating the opposing long sides as in the above-described embodiment.

  In the present embodiment, the cutout portion is formed in a groove shape having a bottom portion, but may be formed in a slit shape so as to penetrate in the direction perpendicular to the substrate surface. However, in this case, it is necessary to configure so that the base is not divided.

  In the present embodiment, a plurality of notches are formed, but only one notch may be provided. Even one notch can reduce the shrinkage of the adhesive. However, when the number of notches is one, it is preferable to form the notches near the center of the base in order to make the contracting action equal to the left and right.

  In the present embodiment, it is preferable that the plurality of cutout portions be formed symmetrically in the tube axis direction with the center portion of the base as the center. Thereby, in each area | region of the both short sides centering on the center part of a base, the reduction effect of the shrinkage effect | action of an adhesive material can be equalized.

  In the fourth embodiment, the adhesive 40C is formed so as to straddle the notch, but the present invention is not limited to this. The adhesive 40C may be applied to a region where the notch is not formed. Also by this, the contraction effect | action with respect to the whole base 30 of 40 C of adhesive materials can be reduced.

  This also means that the LED lamp has a warp preventing effect even with respect to the base on which the notch is not formed. That is, the contraction action of the adhesive can be reduced by forming the adhesive intermittently along the longitudinal direction (tube axis direction) of the base with respect to the base on which the notch is not formed. Can do. Thereby, the curvature of an LED lamp can be suppressed.

  In the third embodiment, the recesses 35 are formed in a stripe shape along the tube axis direction, but the present invention is not limited to this. For example, a plurality of recesses 35 may be formed in a straight line in the tube axis direction on the back surface of the base 30B. In this case, the shape of the concave portion 35 may be rectangular, square, or circular.

  In the present embodiment, the adhesive is configured to be filled in the recess, but the adhesive does not necessarily have to be filled in the recess. For example, when the adhesive has a high viscosity, the recess may not be completely filled with the adhesive.

  In this embodiment, the amount of the adhesive that bonds the base and the straight pipe is improved in order to improve the adhesive force between the base and the straight pipe, and to suppress warping of the base and the straight pipe. It is preferable to apply a large amount in the vicinity of the center in the tube axis direction, and to apply a small amount as it approaches the end in the tube axis direction of the straight pipe.

  In the present embodiment, the LED module 20 is configured such that the plurality of LEDs 22 on the mounting substrate 21 are collectively sealed by the common stripe-shaped sealing member 23. However, each of the plurality of LEDs 22 may be configured to be individually sealed by being applied dropwise by another sealing member.

  Moreover, although the illuminating device 2 was provided with the lighting circuit in this embodiment, the lighting circuit may be provided inside the LED lamp.

  Moreover, although LED was illustrated as a semiconductor light-emitting device in the said embodiment, a semiconductor laser and organic EL (Electro Luminescence) may be sufficient.

  The present invention can be widely used as a straight tube type lamp and a lighting device.

1, 1A, 1B, 1C, 1D, 1E, 1X, 100 LED lamp 2 Lighting device 3 Lighting fixture 4 Socket 5 Appliance main body 10, 110 Straight tube 10X Cover 20, 20X, 120, 300 LED module 21, 121 Mounting substrate 22 , 122 LED
23, 123 Sealing member 30, 30A, 30B, 30D, 30E, 130 Base 30X Metal housing 31 LED module mounting surface 32, 32A, 32B, 32D, 32E Notch 33a First surface 33b Second surface 34 Locking part 35 Concave part 36 Curved part 40, 40C, 140 Adhesive 50a, 50b, 50X, 150a, 150b Base 51a, 51b Base body 52a, 52b Base pin 71a, 72a, 205, 205c, 205d, 500 Wiring 210, 211 Convex portions 301, 800 Substrate 305 First module fixing member 309 Terminal 390 Package 391 External terminal 400 Base fixing member 401 Main body 402 Fixing portion 403 Locking portion 501 801 Resin component 502 Third module fixing member 503 Second module fixing member 803, 804 screw 810 Rectifier circuit element 811 Input / output part 812 Notch part 813 Clearance

Claims (13)

Straight pipe,
A base on which the light emitting module is placed;
An adhesive for bonding the straight pipe and the base,
The base has a notch formed on the surface facing the inner surface of the straight pipe,
The notch is formed along a direction intersecting the tube axis of the straight pipe,
The adhesive is formed inside the notch portion. In the base, when the two surfaces facing the direction perpendicular to the tube axis of the straight pipe as the first surface and the second surface,
The lamp according to claim 1, wherein the notch is formed from the first surface to the second surface. The lamp according to claim 1, wherein the notch is formed in a stripe shape. The lamp according to claim 3, wherein the notch is formed in a direction perpendicular to a tube axis of the straight pipe. The lamp according to claim 4, wherein a plurality of the notch portions are formed. The lamp according to any one of claims 1 to 5, wherein a surface of the base that faces the inner surface of the straight tube is substantially the same as an inner surface shape of the straight tube. The base includes a curved surface portion whose surface facing the inner surface of the straight pipe of the base is substantially the same as the inner surface shape of the straight pipe, and the base of the base along the tube axis direction of the straight pipe. A concave portion formed on the surface facing the inner surface of the straight pipe,
The lamp according to any one of claims 1 to 5, wherein the adhesive is further formed in the recess. The lamp according to any one of claims 1 to 7, wherein the adhesive is formed intermittently along a tube axis direction of the straight pipe. The gap between the intermittently formed adhesives is smaller on the end side of the base in the tube axis direction of the straight pipe than on the center part of the base in the tube axis direction of the straight pipe. Item 9. The lamp according to item 8. The lamp according to claim 1, wherein the base is made of aluminum. The lamp according to claim 1, wherein the adhesive is made of a silicone resin. The lamp according to claim 1, wherein the straight tube is made of a glass tube. An illuminating device comprising the lamp according to any one of claims 1 to 12.

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