JPH1165483A - Video display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the video display device which facilitates the attachment and detachment of a display panel and protects the display panel against a vibration impact. SOLUTION: Fixing bosses 40 having screw parts are provided on the back of a plasma display panel 32, and the outer peripheral surfaces of those fixing bosses 40 are engaged with the inner peripheral surface of a frame chassis 28 in contact and fixed by being screwed. Or a spring is arranged between a fixed member 40 and the frame chassis 28 instead of the screwing and the fixation is performed with its pressing force. This constitution facilitates the attachment and detachment of the plasma display panel 32 and the impact resistance is further improved to evade a position shift between the plasma display 32 and frame chassis 28.

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 mounting a display panel inside a housing thereof.

[0002]

2. Description of the Related Art In recent years, a plasma display panel (hereinafter referred to as a PD) has been used as a thin, lightweight image display device having a large screen.
P) is being put to practical use. This PDP device usually includes a frame chassis inside a case, and a PDP formed by bonding two glass substrates is attached to the front of the frame chassis. Until now, as a mounting method, PD with strong double-sided adhesive tape
It was common to fix P to the frame chassis.

[0003] In addition, the PDP is heated to a considerably high temperature due to internal discharge during light emitting display. PDP if you leave this
It is necessary to suppress the temperature to a predetermined temperature or less because it may lead to breakage of the device. As an effective method therefor, as shown in FIG. 9, when the PDP 32 is fixed by the double-sided adhesive tape 2 disposed around the frame chassis 28, the heat conductive sheet 34 is provided between the frame chassis 28 and the PDP 32.
A method has been proposed in which the heat generated in the PDP 32 by the sheet 34 is efficiently conducted to the frame chassis 28 for heat dissipation.

[0004]

However, once the PDP is fixed with a strong double-sided adhesive tape, it is extremely difficult to remove the PDP from the frame chassis later. Therefore, even when the PDP needs to be replaced due to a failure or damage at the user's site, a service person or the like cannot replace the PDP alone on the spot, and replaces the PDP with the frame chassis. It takes time and effort to transport the entire PDP device to the manufacturer, replace the PDP, and then transport the PDP device to the user again. In any case, there is a problem that the repair cost increases.

Further, as shown in FIG. 9, since the PDP 32 is adhered and fixed to the frame chassis 28 in its peripheral area, if the bonding ability is deteriorated due to poor bonding or aging, the PDP 32 falls from the frame chassis 28, There was also a problem that the PDP 32 was damaged.

[0006]

In order to solve the above-mentioned problems, an image display apparatus according to the present invention comprises a plurality of fixing members provided on the back of a display panel and at least two or more outer peripheral portions of the fixing members. A frame chassis having an inner peripheral surface with which surfaces are engaged, and a fixing means for fixing the fixing member and the frame chassis.

The fixing means is screwed by using a female screw portion provided on the fixing member, or is fixed by a pressing force of a spring disposed on the fixing member and the frame chassis. It is.

The display panel is not limited to a PDP, and may be, for example, a liquid crystal panel. Further, in this video display device, it is preferable that a heat conductive sheet is interposed between the display panel and the frame chassis, and the fixing member is disposed not only in a peripheral region of the display panel but also in a central region thereof. .

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a plurality of fixing members provided on a back surface of a display panel.
A video display device comprising: a frame chassis having an inner peripheral surface with which outer peripheral surfaces of at least two or more fixing members are engaged; and fixing means for fixing the fixing member and the frame chassis. With this configuration, the display panel can be easily attached and detached, and the display panel can be prevented from being dropped and damaged by external force such as vibration or impact, and can be prevented from being displaced from the frame chassis.

Hereinafter, embodiments 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) 10 according to one embodiment of the present invention. This plasma display device 10
And a front case portion 14 and a back case portion 16 which are combined into one
And an internal unit 26 housed therein. A plurality of ventilation holes 18 and 20 are formed in the upper part and the lower part of the front case part 14 in the width direction, respectively, and have a light transmitting part 22 made of glass or the like on the front surface. Also,
A plurality of ventilation holes 18 and 20 (only the upper ventilation hole 18 is shown) are formed in the upper and lower portions of the back case portion 16 in the width direction, respectively.

The upper internal unit 26 is provided with an aluminum frame chassis 28, a PDP (display panel) 32 attached to the front surface of the frame chassis 28 by a plurality of screws 30, and interposed between the frame chassis 28 and the PDP 32. Thermal conductive sheet 34 made of silicon or the like
And a plurality of circuit boards 36 supported on the back of the frame chassis 28. The heat conductive sheet 34 is a PDP
32 to efficiently transfer the heat of 32 to the frame chassis 28. The circuit board 36 is a PDP 32
And controls the light emission of the device.

The PDP 32 has a front plate and a back plate, and although not shown in the drawing, the front plate is longer in the long side direction and shorter in the short side direction than the back plate. Therefore, the front plate and the rear plate each have a portion that does not overlap each other, and a terminal connected to an electrode in the PDP 32 is formed in the non-overlapping portion (not shown).

A plurality of film-like wirings (not shown) having a male connector at the tip are crimped to the terminals, and the male connectors are provided at the edge of each circuit board 36 (not shown). 2), each circuit board 36 and the PDP 32 are electrically connected.

As shown in FIGS. 1 and 2, a plurality of fixing bosses (fixing members) 40 are provided on the back surface of the PDP 32. In the present embodiment, the five fixed bosses 40 are arranged in the peripheral area and the central area of the PDP 32, but the number of the installed bosses may be at least three or more. For example, as shown in FIG. May be arranged in the peripheral area and the central area of the PDP 32.

The fixing boss 40 is adhered and fixed to the PDP 32 by a thermosetting double-sided tape 44. The heat conductive sheet 34 has an opening 46 corresponding to the fixing boss 40. Further, the frame chassis 28 includes the fixed boss 4
A concave portion 48 is formed corresponding to the outer peripheral surface of 0. A through hole 50 is formed in the bottom surface of the recess 48. Thus, the PDP 32 is attached to the frame chassis 28 by inserting the screw 30 from the back of the frame chassis 28 into the through hole 50 via the spring washer 52 and the washer 54 and tightening the screw 30 to the female screw portion 42 of the fixing boss 40. When the PDP 32 needs to be replaced later, the PDP 32 can be removed from the frame chassis 28 by loosening the screw 30.

Here, at least two or more fixed bosses 40
As shown in FIG. 4, the outer peripheral surface of the fixed boss 40 is in close contact with the inner peripheral surface of the concave portion 48 of the frame chassis 28 in an engaging relationship. The fixing boss 40 is formed by molding or cutting using a metal or a synthetic resin or the like, and its shape may be various shapes as shown in FIGS. 5 (a) and 5 (b).

As described above, the PDP device 10 of the present embodiment
Since the PDP 32 is attached to the frame chassis 28 by screwing, the PDP 32 can be easily attached and detached. Therefore, when it is necessary to replace the PDP 32 at the user's site, a service person or the like can replace the PDP device on the spot without sending back the entire PDP device to the manufacturer, so that the labor, time and cost required for repair can be greatly reduced, and Maintenance and serviceability during replacement are improved. Also, at the time of assembling, the labor of attaching a double-sided adhesive tape for fixing the PDP 32 as in the related art can be omitted, so that the assembling process can be simplified.

Further, the fixing member 40 and the frame chassis 2
8 are engaged and fixed by screws, so that the weight of the PDP 32, which is a static load, can be stably supported by the frame chassis 28, and the PDP 32 can be dropped or damaged due to external force such as vibration or impact. Deviation can be avoided.

Further, the PDP 32 is connected to the frame chassis 2
8, when the screws 30 are tightened with the same torque, the fixing bosses 40 are evenly arranged in the peripheral area and the central area of the PDP 32. Therefore, the adhesion of the heat conductive sheet 34 and the heat conduction efficiency thereof are improved. Can be made uniform over the entire area of the PDP 32.

The fixed boss 40 and the frame chassis 2
As a means for engaging and fixing the PDP 8, as shown in FIG. 6, a hexagon socket screw 55 or the like may be used to fix the PDP 32 from the same direction as the surface of the PDP 32. When this means is used, the tightening pressure of the screw is not directly applied to the back plate of the PDP 32, so that a change in the gap between the front plate and the back plate constituting the PDP 32 can be suppressed, and as a result, the plasma discharge phenomenon can be stabilized. Deterioration of quality can be avoided. The fixing boss 4 when a hexagon socket screw is used
As shown in FIGS. 7A and 7B, various shapes can be considered as the shape of 0.

The fixed boss 40 and the frame chassis 2
As shown in FIG. 8, a means for engaging and fixing the frame chassis 8 with the female screw portion provided on the end face of the fixing boss 40 is provided.
The spring 61 may be arranged between the spring stop member 60 and the spring 61. By using this means, a desired pressing force can be easily set according to the distance between the frame chassis 28 and the spring stopper member 60 and the pressure characteristics of the spring 61. It can be easily obtained simply by inserting it between the chassis 28 and the spring stopper 60.

In this embodiment, the display panel has a PDP.
Although the present invention has been described with reference to a video display device using the present invention, the present invention can also be applied to a video display device other than a PDP such as a liquid crystal panel or a field emission display (FED).

[0023]

According to the video display device of the present invention, the display panel is attached to the frame chassis by screws, so that the display panel can be easily attached and detached, and the maintenance and serviceability when replacing the display panel are improved. I do. Also, at the time of assembling the apparatus, the labor for attaching a double-sided adhesive tape can be omitted, and the assembling process can be simplified.

In the case where the fixing member is also provided in the central region of the display panel and the heat conductive sheet is interposed between the display panel and the frame chassis, the screws or nuts corresponding to the fixing member in the central region are tightened. Thus, the adhesiveness with the heat conductive sheet in the central region of the display panel can be improved, and the heat conduction efficiency can be made uniform over the entire region of the display panel.

Further, since the outer peripheral surface of the fixing member is engaged with the inner peripheral surface of the frame chassis and is fixed by the pressing force of a screw or a spring, the display panel may be damaged by dropping due to external force such as vibration or impact. The displacement of the panel from the frame chassis can be avoided.

[Brief description of the drawings]

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

FIG. 2 is a rear view of a frame chassis of the PDP device according to the present invention.

FIG. 3 is a rear view of a frame chassis of the PDP device according to the present invention.

FIG. 4 is a partial cross-sectional view near a fixed boss of the PDP device according to the present invention.

FIG. 5 is a diagram showing types of fixed boss shapes of the PDP device according to the present invention.

FIG. 6 is a partial sectional view of the vicinity of the fixing boss when the fixing boss is screwed to the frame chassis from the same direction as the surface of the PDP in the PDP device according to the present invention.

FIG. 7 is a diagram showing types of fixed boss shapes in the configuration of FIG. 5;

FIG. 8 is a partial cross-sectional view of the vicinity of a fixed boss when a spring is provided in the PDP device according to the present invention.

FIG. 9 is a diagram showing a conventional method of fixing a PDP to a frame chassis.

[Explanation of symbols]

 Reference Signs List 10 plasma display device 28 frame chassis 32 plasma display panel (display panel) 34 heat conductive sheet 40 fixing boss (fixing member) 55 hexagon socket screw 60 spring fixing member 61 spring

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Kazunori Kojima 1006 Kadoma Kadoma, Osaka Pref.Matsushita Electric Industrial Co., Ltd. (72) Inventor Shigeo Hirano 1006 Kadoma Kadoma, Osaka Pref.Matsushita Electric Industrial Co., Ltd.

Claims (5)

[Claims] 1. A frame chassis having a plurality of fixing members provided on a back surface of a display panel, an inner peripheral surface with which at least two or more outer peripheral surfaces of the fixing members engage, and the fixing member and the frame chassis. A video display device comprising: 2. The fixing device according to claim 1, wherein said fixing means is screwed by using a screw portion provided on an end surface of said fixing member opposite to the end surface on which said display panel is mounted. The image display device according to the above. 3. The fixing device according to claim 1, wherein the fixing means is screwed using a screw portion provided on a side surface of the fixing member in the same direction as a surface of the display panel. Video display device. 4. The image display device according to claim 1, wherein said fixing means is fixed by a pressure of a spring disposed on said fixing member and said frame chassis. 5. A heat conductive sheet is interposed between the display panel and the frame chassis, and the fixing member is arranged not only in a peripheral area of the display panel but also in a central area thereof. The video display device according to claim 1.