JP2008233177A - Image display device and method for manufacturing the image display device - Google Patents

Abstract

An image display apparatus capable of preventing foreign matter from entering the image display apparatus while maintaining the ventilation capability, minimizing cost increase, and increasing the degree of freedom in external design. provide.
An image display device includes a rear cover that is disposed on the back side of the image display panel and covers the back of the image display panel, a chassis, a power source, an electronic circuit board, and the like. The rear cover 7 includes an upper surface portion 71, a bottom surface portion 72, a back surface portion 73 and a side surface portion 74. The rear cover 7 has, on the upper surface portion 71, a surface layer cover portion 14c provided with a long hole group 13f and a back layer cover portion 14d provided side by side with the surface layer cover portion 14c and provided with a round hole group 13e. The back layer cover portion 14d and the surface layer cover portion 14c are arranged side by side at a predetermined interval on the back side and the upper portion of the image display panel 2.
[Selection] Figure 2

Description

  The present invention relates to an image display device including a thin image display panel such as a liquid crystal display panel, a plasma display panel, and an EL display panel, and in particular, a plurality of vent holes are provided and disposed on the back side of the image display panel. The present invention relates to an image display device including a back cover member as an exterior part.

  2. Description of the Related Art In recent years, image display devices are required to effectively release heat generated in the device to the outside as the screen becomes larger, multifunctional, and sophisticated.

  The structure and internal structure of a general exterior part of a conventional image display device will be described below with reference to FIGS. FIG. 10 is a perspective view of the entire conventional image display device as viewed from diagonally forward and upward, FIG. 11 is a perspective view of the entire image display device of FIG. 10 as viewed from diagonally downward and downward, and FIG. It is sectional drawing of the image display apparatus in alignment with line 11 BB.

  As shown in FIGS. 10 to 12, the image display device 100 is provided on an image display panel 102 such as a liquid crystal image display panel, a plasma image display panel, an EL image display panel, and the non-display side of the image display panel 2. And a flat chassis 103. In addition, the image display device 100 includes a power source 104 and an electronic circuit board 105 attached to the chassis 3, and a front cover 106 as an exterior component that is disposed on the front side of the image display panel 102 and covers the outer periphery of the image display panel 102. With. Furthermore, the image display device 100 includes a rear cover 107 that is disposed on the back side of the image display panel 102 and covers the back surface of the image display panel 102, the chassis 103, the power source 104, the electronic circuit board 105, and the like.

  The electronic circuit board 105 is provided with a power switch 108, a power receptacle 109, and various image input / output terminals / audio output terminals 110, which are exposed to the outside from the bottom surface of the rear cover 107 (FIG. 12).

  Speakers (not shown) mounted on the image display apparatus 100 are supported by the chassis 103 or the front cover 106 and are arranged on both sides or the lower part of the image display panel 102.

  In addition, the image display device 100 includes two support columns 112a and 112b attached to the lower portion of the chassis 103, and a base portion 112c fixed to the two support columns 112a and 112b. The two columns 112a and 112b and the base portion 112c constitute a stand 112, and the image display device 100 is placed on the floor or table by the stand 112 (FIG. 11).

  In the image display device 100 configured as described above, a vent hole 113 is provided in the rear cover 107 and outside air (cold air) is introduced from the lower vent hole 113 in order to release heat generated inside the device to the outside. After the image display panel 102, the power source 104, the electronic circuit board 105, and the like are cooled, air whose temperature has risen is discharged from the upper vent 113. Specifically, outside air (cold air) is introduced from a vent hole 113a provided in the bottom surface of the rear cover 107 and a vent hole 113b provided in the lower back portion, and provided in the upper surface 113d and the rear upper portion of the rear cover 107. Air whose temperature has risen is discharged from the vent hole 113c.

  As the material of the rear cover 107, resin is adopted from the viewpoint of cost and design in the image display apparatus 100 using the liquid crystal image display panel up to 40 inch class, and the rear cover 107 tends to be molded by injection molding. On the other hand, in the image display device 100 using a plasma image display panel or a liquid crystal image display panel of approximately 50 inches or more, a metal plate such as iron or aluminum is adopted from the viewpoint of interference electromagnetic wave countermeasures and mold investment, It tends to be formed by press working.

  In the case where the rear cover 107 is a press-molded product made of a metal plate, the vent hole 113 is often a round hole having a diameter of about 4.0 mm in consideration of both the heat dissipation effect and foreign matter contamination.

Also, for the purpose of countermeasures against electromagnetic interference, a display device has been proposed in which a metal mesh or metal mesh as a separate part is attached to the entire inside of the resin rear cover, and all the vent holes in the rear cover are closed with the metal mesh or metal mesh. (For example, refer to Patent Document 1).
JP 2002-6756 A

  However, in the conventional image display device 100 described above, when the vent hole 113 of the rear cover 107 is a round hole having a diameter of about 4.0 mm, a thin chain such as a necklace, a stapler needle, or the like is formed particularly on the upper surface of the rear cover. There is a problem that foreign matter enters the inside of the image display apparatus 100 through the vent hole 113d.

  In order to solve this problem, it may be possible to prevent foreign matter from entering the inside of the rear cover 107 by sticking a fiber net. However, the fiber net has a drawback that it breaks when a stick-like member is stabbed from the outside. . In addition to this, the process of attaching a fiber net, which is a separate part, to the inside of the rear cover 107 causes an increase in cost.

  Further, in the above conventional display device, since the metal mesh or the metal mesh is attached to the entire inside of the rear cover, the metal mesh or the metal mesh which is a separate part causes a cost increase more than the fiber net. In addition to this, a process of screwing a metal mesh or metal mesh with a grounding portion in the apparatus with a screw causes an increase in cost. Furthermore, the external appearance design is extremely limited in the case of a round vent hole having a diameter of about 4 mm in consideration of both the heat radiation effect and the mixing of foreign matter.

  An object of the present invention is to prevent foreign matter from entering the image display apparatus while maintaining the ventilation capability, minimize the cost increase, and increase the degree of freedom in appearance design. It is to provide a manufacturing method of a display device and an image display device.

  In order to achieve the above object, the present invention provides an image display device comprising a thin image display panel and a back cover member disposed on the back side of the image display panel. A surface layer cover portion provided with a plurality of hole groups, and a back layer cover portion provided side by side with the surface layer cover portion and provided with a second hole group.

  According to the present invention, the back cover member has the surface layer cover portion provided with the first hole group and the back layer cover portion provided in parallel with the surface layer cover portion and provided with the second hole group. While maintaining the ventilation capability, foreign matter can be prevented from entering the inside of the image display device, the cost increase can be minimized, and the degree of freedom in external design can be increased.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view of an image display apparatus according to a first embodiment of the present invention as viewed obliquely from below and FIG. 2 is a cross-sectional view of the image display apparatus taken along line AA in FIG. is there.

  As shown in FIGS. 1 and 2, the image display device 1 is provided on an image display panel 2 such as a liquid crystal image display panel, a plasma image display panel, an EL image display panel, and the non-display side of the image display panel 2. A flat chassis 3. In addition, the image display device 1 includes a power source 4 and an electronic circuit board 5 attached to the chassis 3, and a front cover 6 as an exterior component that is disposed on the front side of the image display panel 2 and covers the outer periphery of the image display panel 2. And a rear cover (back cover member) 7 disposed on the back side of the image display panel 2 and covering the back of the image display panel 2, the chassis 3, the power source 4, the electronic circuit board 5, and the like.

  The electronic circuit board 5 is provided with a power switch 8, a power receptacle 9, and various image input / output terminals / audio output terminals 10, and is exposed to the outside from the bottom surface of the rear cover 7 (FIG. 1).

  Speakers (not shown) mounted on the image display device 1 are supported by the chassis 3 or the front cover 6 and are arranged on both sides or the lower part of the image display panel 2.

  Further, the image display device 1 includes two support columns 12a and 12b attached to the lower portion of the chassis 3 and a base portion 12c fixed to the two support columns 12a and 12b. The two struts 12 a and 12 b and the base portion 11 a constitute a stand 12, and the image display device 1 is placed on the floor or the table by the stand 12.

  The rear cover 7 includes an upper surface portion 71, a bottom surface portion 72, a back surface portion 73 and a side surface portion 74. The bottom surface portion 72 is provided with a vent hole 13a, and the back surface portion 73 is provided with a vent hole 13c in the upper part and a vent hole 13b in the lower part. In addition, the upper surface portion 71 is provided with a plurality of hole groups for ventilation, which will be described later.

  FIG. 3 is a partial cross-sectional view showing the vicinity of the upper surface 71 of the rear cover 7 in FIG.

  The rear cover 7 has a surface layer cover portion 14c provided with a long hole group 13f (first hole group) and a surface hole cover portion 14c arranged in parallel on the upper surface portion 71, and a round hole group 13e (second hole group). ) Provided with a back layer cover portion 14d. The back layer cover part 14d and the surface layer cover part 14c are arranged in parallel at a predetermined interval on the back side and the upper part of the image display panel 2.

  The rear cover 7 is made of, for example, a metal plate such as iron or aluminum, and the surface layer cover part 14c and the back layer cover part 14d are integrally formed by pressing (FIG. 2).

  4 is an arrow view of the upper surface portion 71 of the rear cover 7 in FIG. 3 as viewed from the direction of the arrow α.

  In FIG. 4, a plurality of ventilation holes 130f constituting the long hole group 13f are formed in the surface layer cover portion 14c, and a plurality of ventilation holes 130e constituting the round hole group 13e are formed in the back layer cover portion 14d. The The plurality of vent holes 130e and the plurality of vent holes 130f are provided at a predetermined pitch, and the pitch of the plurality of vent holes 130f is a multiple of the pitch of the plurality of vent holes 130e.

  The shape of the vent hole 130f is different from the shape of the vent hole 130e. Specifically, the vent hole 130f provided in the surface layer cover part 14c is a long hole having a predetermined length in the longitudinal direction in consideration of the appearance design, and the vent hole 130e provided in the back layer cover part 14d is a heat dissipation effect. In consideration of both contamination and contamination, the hole has a diameter of about 4.0 mm. The width of the vent hole 130f is the same as the diameter of the vent hole 130e. The total opening area of the vent holes 130f formed in the surface layer cover portion 14c is set to a value larger than the total opening area of the vent holes 130e formed in the back layer cover portion 14d in consideration of the heat dissipation effect.

  The plurality of vent holes 130e of the back layer cover portion 14d overlap with a part of the plurality of vent holes 130f of the surface layer cover portion 14c, but the mixing of foreign matters is remarkably reduced as compared with the single layer structure of the back layer cover portion 14d alone. can do. Further, since the total opening area of the upper surface portion 71 is the same as that of the single layer structure having only the back layer cover portion 14d, the ventilation capability is not lowered.

  In this image display device 1, outside air (cold air) is introduced from the vent hole 13 a provided in the bottom surface portion 72 of the rear cover 7 and the vent hole 13 b provided in the lower portion of the back surface portion 73, and a heat source is generated by the introduced outside air. The image display panel 2, the power source 4, and the electronic circuit board 5 are cooled. Thereafter, the air whose temperature has risen is formed in the air holes 13c provided in the upper part of the rear surface portion 73 of the rear cover 7, and the round hole group 13e and the surface layer cover portion 14c formed in the back layer cover portion 14d of the upper surface portion 71. The discharged holes 13f are discharged.

  5A and 5B are diagrams showing a process of integrally forming the rear cover 7 by press working, where FIG. 5A is a developed state before processing, FIG. 5B is a state during processing, and FIG. 5C is a folded state after processing. Indicates.

  First, a metal plate is cut into a substantially rectangular shape with a predetermined size, and punching is performed in the vicinity of the outer peripheral portion of one side of the metal plate to form the round hole group 13e and the long hole group 13f at predetermined intervals (hole forming step). The round hole group 13e is formed on the outer peripheral side from the long hole group 13f. Further, burring is performed at a position inside the long hole group 13f of the metal plate to form the flange portion 14h. A hole 14g through which the flange portion 14h is inserted is formed at a position outside the round hole group 13e of the metal plate. Burring refers to forming a flange by opening a lower hole in a metal plate, pushing a punch having an outer diameter larger than the diameter of the lower hole into the lower hole, and widening the edge of the lower hole.

  Next, the position between the flange portion 14h and the long hole group 13f (A portion in the drawing), the outer end portion (B portion in the drawing) of the long hole group 13f, and between the round hole group 13e and the hole 14g. Each position (C portion in the figure) is bent, and the outer peripheral portion of one side of the metal plate is processed into a shape as shown in FIG. Thereby, the outer peripheral part of one side of a metal plate is divided into the back part 14f, the hole formation part 14b, and the edge part 14e.

  After that, in the hole forming portion 14b, the position (D portion in the figure) between the long hole group 13f and the round hole group 13e is subjected to press work, so-called hemming, and after the state of FIG. The metal plate (metal plate-like member) provided with the hole group 13f and the round hole group 13e is folded back 180 ° (FIG. 5C) (folding step). By folding back the metal plate provided with the long hole group 13f and the round hole group 13e, the surface layer cover part 14c and the back layer cover part 14d are integrally formed. Then, the flange portion 14h formed in the back surface portion 14f is inserted into the hole 14g formed in the end portion 14e, and the flange portion 14h is crimped by pressing in a state where the flange portion 14h is inserted into the hole 14g (see the drawing). Arrow β direction). By this pressing, the end portion of the flange portion 14h is bent toward the outer side of the flange hole, and the end portion 14e is pressure-bonded to the back surface portion 14f.

  According to the present embodiment, the rear cover 7 has, on the upper surface portion 71, a surface layer cover portion 14c provided with the long hole group 13f and a back surface provided side by side with the surface layer cover portion 14c and provided with the round hole group 13e. A layer cover portion 14d. By arranging the surface layer cover portion 14c and the back layer cover portion 14d side by side, the upper surface portion 71 of the rear cover 7 has a two-layer structure, and small foreign matter is a group of long holes 13f in the surface layer cover portion 14c and a group of round holes in the back layer cover portion 14d. It can be prevented from passing through 13e and entering the image display apparatus 1. Moreover, by making the upper surface part 71 of the rear cover 7 into a two-layer structure, the freedom degree of the design of the hole provided in the surface layer cover part 14c can be increased, maintaining ventilation capability. In addition, since the rear cover 7 is integrally formed by pressing the metal plate, the cost increase can be minimized. Accordingly, foreign matter can be prevented from entering the image display device while maintaining the ventilation capability, and the cost increase can be minimized, and in addition, the degree of freedom in external design can be increased.

  Further, since the surface layer cover portion 14c and the back layer cover portion 14d are arranged side by side at a predetermined interval, the temperature of the surface layer cover portion 14c is lower than that of the back layer cover portion 14d, and the user touches the upper surface portion 71 of the rear cover 7. Even in this case, the heat felt by the user can be reduced.

  FIG. 6 is a partial cross-sectional view showing the vicinity of the upper surface portion of the rear cover provided in the image display device according to the second embodiment of the present invention. The configuration of the present embodiment is basically the same as that of the first embodiment, and the same components are denoted by the same reference numerals and redundant description is omitted, and only the following differences are provided. Will be explained.

  As shown in FIG. 6, the rear cover 700 has a top surface portion 710, a surface layer cover portion 710c provided with a round hole group (first hole group) 720f, and a surface layer cover portion 710c arranged side by side. (Second hole group) a back layer cover portion 710d provided with 720e. The surface layer cover part 710c and the back layer cover part 710d are arranged in parallel at a predetermined interval on the back side and the upper part of the image display panel 2.

  The rear cover 700 is made of, for example, a metal plate such as iron or aluminum, and the surface layer cover part 710c and the back layer cover part 710d are integrally formed by pressing.

  FIG. 7 is an arrow view of the upper surface portion 710 of the rear cover 700 in FIG. 6 as viewed from the direction of the arrow γ.

  In FIG. 7, a plurality of ventilation holes 721f constituting the round hole group 710f are formed in the surface layer cover portion 710c, and a plurality of ventilation holes 721e constituting the round hole group 720e are formed in the back layer cover portion 710d. The That is, the shape of each hole constituting the round hole group 710f is the same as the shape of each hole constituting the round hole group 720e, and the round hole group 710f and the round hole group 720e are each constituted by a round hole. Further, the inner diameter of each hole constituting the round hole group 720f is the same as the inner diameter of each hole constituting the round hole group 720e.

  The plurality of ventilation holes 721f constituting the round hole group 710f and the plurality of ventilation holes 721e constituting the round hole group 720e are respectively provided at a predetermined pitch, and the pitch of the plurality of ventilation holes 721f is the pitch of the plurality of ventilation holes 721e. Is the same. Further, the vent holes 721f of the round hole group 710f are arranged so as not to overlap the vent holes 721e of the round hole group 720e in the direction perpendicular to the back layer cover portion 710d. Specifically, the vent hole 721f of the surface layer cover part 710c is arranged out of phase with the vent hole 721e of the back layer cover part 710d with respect to the direction perpendicular to the back layer cover part 710d.

  The ventilation hole 721e provided in the back layer cover part 710d is a round hole having a diameter of about 4.0 mm in consideration of both the heat radiation effect and the mixing of foreign substances, and the ventilation hole 721f provided in the surface layer cover part 710c prevents the mixing of foreign substances. Considering this, it is a round hole having a diameter of about 4.0 mm. Further, by making the number of the vent holes 721f larger than the number of the vent holes 721e, the total opening area of the vent holes 721f formed in the surface layer cover portion 14c is the total of the vent holes 721e formed in the back layer cover portion 14d. A value larger than the opening area is set.

  According to the present embodiment, the rear cover 700 has, on the upper surface portion 710, a surface layer cover portion 710c provided with 720f and a back layer cover portion provided side by side with the surface layer cover portion 710c and provided with a round hole group 720e. 710d. The plurality of ventilation holes 721e constituting the round hole group 720e and the plurality of ventilation holes 721f constituting the round hole group 710f are respectively provided at a predetermined pitch. Further, the vent holes 721e of the round hole group 720e are arranged so as not to overlap the vent holes 721f of the round hole group 710f in the direction perpendicular to the back layer cover portion 710d. This prevents a minute foreign substance, for example, a foreign substance having a diameter of 4.0 mm or less from entering the inside of the image display device through the round hole group 720f of the surface layer cover part 710c and the round hole group 720e of the back layer cover part 710d. can do. In addition, since the upper surface portion 710 of the rear cover 700 has a two-layer structure, the degree of freedom in designing the holes provided in the surface layer cover portion 710c can be increased while maintaining the ventilation capability. In addition, since the rear cover 700 is integrally formed by pressing a metal plate, an increase in cost can be minimized. Accordingly, foreign matter can be prevented from entering the image display device while maintaining the ventilation capability, and the cost increase can be minimized, and in addition, the degree of freedom in appearance design can be increased.

  In the present embodiment, the vent holes 721e of the round hole group 720e are arranged so as not to overlap the vent holes 721f of the round hole group 710f in the direction perpendicular to the back layer cover portion 710d, but the present invention is not limited to this. The vertical holes may be arranged so as not to overlap the vent holes 721f of the round hole group 710f.

  In the present embodiment, the inner diameter of each hole constituting the round hole group 720e is the same as the inner diameter of each hole constituting the round hole group 720f, but is not limited to this, and constitutes the round hole group 720f. It may be different from the inner diameter of each hole.

  In the present embodiment, the number of the vent holes 721f is larger than the number of the vent holes 721e, but the present invention is not limited to this and may be the same as the number of the vent holes 721e.

  In the present embodiment, the shape of each hole constituting the round hole group 720e is the same as the shape of each hole constituting the round hole group 710f, but the present invention is not limited to this. You may differ from the shape of each hole to comprise. In this case, the shape of each hole constituting the round hole group 720e may be, for example, a polygon, a symbol, or a combination thereof.

  FIG. 8 is a partial cross-sectional view showing the vicinity of the upper surface portion of the rear cover provided in the image display device according to the third embodiment of the present invention. The configuration of the present embodiment is basically the same as that of the first embodiment, and the same components are denoted by the same reference numerals and redundant description is omitted, and only the following differences are provided. Will be explained.

  As shown in FIG. 8, the rear cover 800 has a top surface portion 810, a surface layer cover portion 810c provided with a long hole group (second hole group) 820f, and a surface layer cover portion 810c arranged side by side, and a round hole group (First hole group) 820e provided with a back layer cover portion 810d. The surface layer cover part 810c and the back layer cover part 810d are arranged in parallel at a predetermined interval on the back side and the upper part of the image display panel 2. As for each hole of the round hole group 820e, the peripheral part of each hole protrudes toward the surface layer cover part 810c by burring (flange shape).

  According to the present embodiment, the rear cover 800 includes the surface layer cover portion 810c provided with the long hole group 820f and the back layer cover portion 810d provided with the round hole group 820e. As for the hole, the peripheral part of each hole protrudes toward the surface layer cover part 810c. Since the upper surface portion 810 of the rear cover 800 has a two-layer structure, and the peripheral portion of each hole of the round hole group 820e provided in the back layer cover portion 810d protrudes toward the surface layer cover portion 810c, the ventilation capability is maintained. However, it is possible to reliably prevent the entry of minute foreign matters.

  FIG. 9 is a view showing a modification of the rear cover of FIG.

  As shown in FIG. 9, the rear cover 900 has a surface layer cover portion 910 c provided with a long hole group (first hole group) 920 f on the upper surface portion 910, and a surface layer cover portion 910 c arranged side by side. (Second hole group) 920e provided with a back cover portion 910d. The surface layer cover part 910c and the back layer cover part 910d are arranged in parallel at a predetermined interval on the back side and the upper part of the image display panel 2. As for each hole of the hole group 920e provided in the back layer cover part 910d, a part of the peripheral part protrudes toward the surface layer cover part 910c. Further, the protruding peripheral edge extends in the horizontal direction. In addition, each hole of the round hole group 920e may protrude toward at least the surface layer cover portion 910c.

  Each hole of the hole group 920e is formed by forming a round hole having a diameter of 2.0 to 3.0 mm in a metal plate and bending a part of the peripheral edge of the round hole toward the surface cover portion 910c. .

  According to this modification, the rear cover 900 includes a surface layer cover portion 910c provided with a long hole group 920f and a back layer cover portion 910d provided side by side with the surface layer cover portion 910c and provided with a hole group 920e. In each hole of the hole group 920e provided in the back layer cover portion 910d, a part of the peripheral portion protrudes toward the surface layer cover portion 910c, and the protruded peripheral portion extends in the horizontal direction. The upper surface portion 71 of the rear cover 7 has a two-layer structure, and a part of the peripheral portion of each hole of the hole group 920e provided in the back layer cover portion 910d protrudes toward the surface layer cover portion 910c, and the protruding peripheral portion is Since it extends in the horizontal direction, it is possible to more reliably prevent the entry of minute foreign matters such as staples of the stapler while maintaining the ventilation capability.

  In each of the above embodiments, the upper surface portion of the rear cover has a two-layer structure, but the present invention is not limited to this, and in addition to the upper surface portion of the rear cover, at least one of the bottom surface portion, the back surface portion, and the side surface portion has a two-layer structure. It is good. As a result, the same effects as those of the above embodiments can be reliably obtained.

  In each of the above embodiments, the back layer cover portion and the surface layer cover portion are arranged in parallel at a predetermined interval. However, the present invention is not limited to this, and a hole group is provided between the back layer cover portion and the surface layer cover portion. The provided middle layer cover portions may be arranged side by side. In this case, a plurality of middle layer cover portions may be provided side by side. As a result, the same effects as those of the above embodiments can be reliably obtained.

It is the perspective view which looked at the image display device concerning a 1st embodiment of the present invention from diagonally lower back. It is sectional drawing of the image display apparatus which follows the line AA of FIG. FIG. 3 is a partial cross-sectional view showing the vicinity of the upper surface portion of the rear cover in FIG. 2. It is the arrow line view which looked at the upper surface part of the rear cover 7 in FIG. 3 from the arrow (alpha) direction. It is a figure which shows the process of forming a rear cover integrally by press work, (a) is the unfolding state before a process, (b) is the state in the middle of a process, (c) shows the return | turnback state after a process. It is a fragmentary sectional view which shows the upper surface part vicinity of the rear cover with which the image display apparatus which concerns on the 2nd Embodiment of this invention is provided. FIG. 7 is an arrow view when an upper surface portion of the rear cover in FIG. 6 is viewed from an arrow γ direction. It is a fragmentary sectional view which shows the upper surface part vicinity of the rear cover with which the image display apparatus which concerns on the 3rd Embodiment of this invention is provided. It is a figure which shows the modification of the rear cover of FIG. It is the perspective view which looked at the conventional image display apparatus from diagonally forward upper direction. It is the perspective view which looked at the image display apparatus of FIG. 10 from diagonally lower back. It is sectional drawing of the image display apparatus which follows the line BB of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Image display apparatus 7 Rear cover 71 Upper surface part 72 Bottom surface part 73 Back surface part 74 Side surface part 13f Long hole group 14c Surface layer cover part 13e Round hole group 14d Back layer cover part 130f Vent hole 130e Vent hole

Claims (11)

In an image display device comprising a thin image display panel and a back cover member disposed on the back side of the image display panel,
The back cover member has a surface layer cover portion provided with a first hole group, and a back layer cover portion provided in parallel with the surface layer cover portion and provided with a second hole group. Image display device.   The surface layer cover part and the back layer cover part are integrally formed by folding back a metal plate-like member provided with the first hole group and the second hole group. Item 2. The image display device according to Item 1.   3. The image display device according to claim 1, wherein a shape of each hole constituting the first hole group is different from a shape of each hole constituting the second hole group.   The image display apparatus according to claim 3, wherein the first hole group includes a plurality of long holes, and the second hole group includes a plurality of round holes.   The plurality of long holes and the plurality of round holes are respectively provided at a predetermined pitch, and the pitch of the plurality of long holes is a multiple of the pitch of the plurality of round holes. Image display device.   The shape of each hole constituting the first hole group is the same as the shape of each hole constituting the second hole group, and each of the first hole group and the second hole group is a round shape. The image display device according to claim 1, wherein the image display device is constituted by a hole.   The plurality of round holes constituting the first hole group and the plurality of round holes constituting the second hole group are respectively provided at a predetermined pitch, and each hole of the first hole group is formed on the surface cover. The image display device according to claim 6, wherein the image display device is arranged so as not to overlap each of the holes constituting the second hole group in a direction perpendicular to the portion.   The image display device according to claim 6 or 7, wherein a diameter of each hole constituting the first hole group is different from a diameter of each hole constituting the second hole group.   The image display device according to claim 1, wherein the surface layer cover portion and the back layer cover portion are arranged side by side at a predetermined interval on a back side and an upper portion of the display panel.   The hole of each of the second hole groups provided in the back layer cover part is characterized in that at least a part of a peripheral part of each hole protrudes toward the surface layer cover part. Image display device. A method for manufacturing an image display device, comprising: a thin image display panel; and a back cover member provided on the back side of the image display panel and provided with a group of holes for ventilation.
A hole forming step of forming the first hole group and the second hole group in the metal plate-like member at a predetermined interval;
An image display comprising: a folding step of folding back the metal plate provided with the first hole group and the second hole group at a position between the first hole group and the second hole group. Device manufacturing method.

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