JPH11338370A - Video display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a weight of the device by arranging a panel supporting thin plate for holding a display panel via a heat conductive sheet and a main supporting plate for holding the panel supporting thin plate. SOLUTION: A panel supporting thin plate 6 which is on the back of a display panel and holds a display panel via a heat conductive sheet 34, and a main supporting plate 5 for holding the panel supporting thin plate 6 are arranged. On the main supporting plate 5, the panel supporting thin plate 6, an electric circuit substrate, a stand 7, an escutcheon 14, and a back cover 16 are mounted. PDP 32 is fixed on the whole surface of the panel supporting thin plate 6 via a strong double-coated adhesive tape. Moreover, heat conductive sheet 34 is interposed between the panel supporting thin plate 6 and PDP 32. And, the heat produced in PDP 32 is effectively conducted to the panel supporting plate 6 by the interposed heat conductive sheet 34 so as to be radiated. Since the panel supporting thin plate 6 having a function of cooling down the produced heat can be formed with an inexpensive sheet metal such as aluminum etc., it is possible to substantially make it thinner and reduce the weight.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device such as a plasma display, and more particularly to a structure for realizing a light weight, high heat radiation, high maintenance and low cost of the device. is there.

[0002]

2. Description of the Related Art In recent years, a plasma display panel (hereinafter, referred to as PDP) device has been put into practical use as a large-screen image display device. As shown in FIG. 2, this PDP device usually includes a frame chassis 28 inside an escutcheon 14 and a back cover 16 which are housings.
The material is made by die casting using a metal such as aluminum which has both good mechanical rigidity and thermal conductivity. A PDP 32 formed by bonding two glass substrates is attached to the front surface of the frame chassis 28. As a mounting method, PDP with strong double-sided adhesive tape 2
32 is fixed to the frame chassis 28. Also, P
The temperature of the DP 32 becomes considerably high due to internal discharge during light emission display. When this is left, PDP3
Therefore, it is necessary to suppress the temperature to a predetermined temperature or less because there is a possibility of causing breakage of the second member. As an effective method therefor, when fixing the PDP 32 with the double-sided adhesive tape 2 disposed around the frame chassis 28, a heat conductive sheet 34 is interposed between the frame chassis 28 and the PDP 32, and the sheet 34 A method has been proposed in which the generated heat is efficiently conducted to the frame chassis 28 to dissipate the heat.

[0003]

However, in a PDP device with a large screen, the frame chassis is made by means such as die-casting. For this reason, the weight of the whole PDP device becomes heavy, and there is a problem that workability at the time of manufacturing and transportation is reduced, and material cost is increased.

[0004] Further, even when installed on a wall, taking advantage of the thin structure, which is one of the features of the PDP device, the weight of the entire device becomes heavy, so that there is a problem that the wall is damaged or the PDP device falls off the wall. Had occurred.

Next, in order to promote the heat radiation of the PDP which generates heat, the PDP, the heat conductive sheet and the frame chassis must be in close contact with each other. However, its planar accuracy is not very good. If a PDP made of glass is fixed to the frame chassis having poor planar accuracy via the double-sided adhesive tape 2, stress is generated inside the PDP 32, and there is a problem that the PDP 32 is broken. As a means of avoiding this problem, there is a method of improving the planar accuracy of the frame chassis by milling or the like,
There is a problem that the cost is high.

Further, since the stand 7 is attached to the frame chassis 28 via the back cover 16, when repairing after assembling the entire apparatus, it is necessary to remove the back cover 16 after removing the stand 7, which is a problem. There was a problem of causing a time delay.

[0007]

In order to solve the above-mentioned problems, an image display device according to the present invention is provided on a panel supporting thin plate which is located on the back side of a display panel and holds the display panel via a heat conductive sheet. And a main support for holding the panel supporting thin plate. The main support is formed of resin or the like, or is made of sheet metal. Also,
In order to maintain the flatness of the main support, a shim made of a thin film member is disposed between the panel support thin plate and the main support. In addition, the main support supports the entire image display device, and has a structure in which a stand provided for fixing to a wall or installing on a desk can be fixed. Also,
The main support is provided with ventilation holes for promoting cooling. Further, as means for promoting the cooling capacity, a cooling fin for efficiently cooling the display panel is provided on the panel supporting thin plate, or a cooling fan is provided on the panel supporting thin plate or the main support. You may. A boss for mounting an electric circuit is provided on the main support or the panel support thin plate.

[0008] The display panel is not limited to a PDP.
For example, a liquid crystal panel may be used.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to a first aspect of the present invention is directed to a panel supporting thin plate which is located on the back side of a display panel and holds the display panel via a heat conductive sheet, and a panel supporting thin plate. An image display device comprising: a main support for holding; a video display device having a thin structure and efficient cooling of the display panel while maintaining mechanical rigidity. A display device can be realized.

Hereinafter, a first embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an exploded perspective view of a plasma display device (video display device) according to the present embodiment. The housing of the plasma display device includes an escutcheon 14 and a back cover 16. A plurality of ventilation holes 18 and 20 are formed in the upper and lower portions of the escutcheon 14 and the back cover 16 in the width direction, respectively, and have a light transmitting portion 22 made of glass or the like on the front surface. The panel support thin plate 6, an electric circuit board (not shown), a stand 7, an escutcheon 14, and a back cover 16 are attached to the main support 5. A PDP 32 is fixed to the front surface of the panel supporting thin plate 6 via a strong double-sided adhesive tape 2. In addition, a heat conductive sheet 34 is interposed between the panel supporting thin plate 6 and the PDP 32, and the heat generated by the PDP 32 is efficiently transmitted to the panel supporting thin plate 6 and radiated by the sheet 34.

Here, the panel supporting thin plate 6 has a function of cooling the heat generated in the PDP, but can be made of an inexpensive sheet metal such as aluminum. It is possible to reduce the weight. On the other hand, the main support 5 can be configured with a minimum volume having sufficient mechanical rigidity to hold the panel support thin plate 6, the stand 7, the escutcheon 14, and the back cover 16, so that the weight can be reduced as compared with die casting. Further, if not only metal but also resin is used, the weight can be further reduced.

Next, a shim 52 made of a thin sheet metal member or the like can be inserted between the main support 5 and the panel supporting thin plate 6, so that the main support 5 cannot be formed with high dimensional accuracy. In the case where the main support 5 is manufactured by inserting the shim 52, the irregularity of the flatness of the main support 5 can be absorbed. For this reason, the panel supporting thin plate 6 is
Even in the case of fixing to the main support 5 using, for example, the stress on the panel support thin plate 6 and the PDP 32 can be reduced. Therefore, expensive PDP3 made of brittle glass
2 can be avoided.

The main support 5 supports the entire PDP device and a stand 7 for installation on a desk or fixing to a wall.
It has a structure that can be attached. Conventionally, stand 7
Is attached to the frame chassis 28 via the back cover 16, and when the device is repaired after the entire device is assembled, it is necessary to remove the back cover 16 after removing the stand 7. However, in this method, since the stand 7 and the back cover 16 are independently fixed to the main support 5, even when the PDP device is set on a desk, Since only the back cover 16 can be removed, repair can be easily performed.

The main support 5 is provided with support ventilation holes 51 for promoting cooling in the housing. PDP
Since the heat generated by the circuit board 32 and the electric circuit board flows upward from the bottom of the housing, the heat can be efficiently released to the outside of the housing through the support ventilation holes 51. Further, in order to promote cooling in the housing, a cooling fin may be provided on the panel supporting thin plate 6, or a cooling fan may be provided on the panel supporting thin plate 6 or the main support 5.

When the main support 5 is manufactured by molding,
Since the boss 54 for fixing the electric circuit board can be integrally formed, the assembly cost can be suppressed.

In this embodiment, the display panel has a PD.
Although the image display device using P has been described, the present invention can be applied to an image display device other than PDP such as a liquid crystal panel or a field emission display.

[0017]

According to the image display device of the present invention, for example, a commercially available sheet metal can be used as the panel supporting thin plate for cooling the PDP. Lightening can be realized.

Further, the main support requiring only mechanical rigidity can be not only a structure having a minimum volume required for supporting a PDP or the like, but also a resin or the like instead of metal. Here, weight reduction can also be realized. Therefore, it is possible to reduce the weight of the entire PDP device, so that improvement in workability and cost reduction during transportation can be expected.

Further, even when the apparatus is mounted on a wall utilizing the advantage of a thin structure, which is one of the features of the PDP device, it is possible to avoid damage to the wall and drop of the PDP device from the wall.

In the video display device of the present invention, the PDP
Since a panel supporting thin plate made of sheet metal and the like, which is more flexible and has lower mechanical rigidity, is used, even if the panel supporting thin plate is sufficiently adhered to a heat conductive sheet or a double-sided adhesive tape, the
P is not damaged.

In addition, as a method of fixing the panel supporting thin plate to the main support where flatness cannot be expected, a shim having a predetermined thickness is inserted between the main supporting member and the panel supporting thin plate. PD can improve body flatness.
P damage can be avoided.

Further, in this method, since the stand and the back cover are independently fixed to the main support, even when the PDP device is installed on a desk, only the back cover can be removed. Therefore, repair can be easily performed.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a PDP device according to the present invention.

FIG. 2 is an exploded perspective view of a conventional PDP device.

[Explanation of symbols]

 2 Double-sided adhesive tape 5 Main support 6 Panel support thin plate 7 Stand 14 Escution 16 Back cover 18 Escution ventilation hole 20 Back cover ventilation hole 22 Light transmission part 32 PDP 34 Thermal conductive sheet 51 Support ventilation hole 52 Shim 54 Boss

Claims (9)

[Claims] 1. A panel support thin plate which is located on the back side of a display panel and holds the display panel via a heat conductive sheet, and a main support which holds the panel support thin plate. Video display device. 2. The image display device according to claim 1, wherein a shim made of a thin film member is provided between the panel support thin plate and the main support to maintain the flatness of the main support. 3. The image display device is entirely supported and fixed to a wall.
2. The video display device according to claim 1, wherein a stand provided for installation on a desk is fixed to the main support. 4. The image display device according to claim 1, wherein the main support has ventilation holes for cooling. 5. The image display device according to claim 1, further comprising a boss for mounting an electric circuit on the main support or the thin plate. 6. The method according to claim 1, wherein the main support is formed of a material such as aluminum or resin, or a sheet metal.
The image display device according to the above. 7. The image display device according to claim 1, wherein the panel supporting thin plate is provided with cooling fins for efficiently cooling the display panel. 8. The image display device according to claim 1, wherein a cooling fan for efficiently cooling the display panel is provided on the panel support thin plate or the main support. 9. A display panel, a panel supporting thin plate disposed directly or via a heat conductive sheet on the back side of the display panel, and a main support for holding the panel supporting thin plate.
A cooling fan and a video display apparatus having a stand fixed to the main support, wherein the main support has a plurality of ventilation holes, and heat generated in the display panel is generated by the panel support thin plate and the An image display device, wherein the image is transmitted to a main support, and is cooled through the ventilation holes by air blowing from the cooling fan.