JP2000047598A - Video display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily attach and detach a display panel, to improve the maintainability and serviceability at the time of display panel replacement, and to reuse a frame chassis by fitting the display panel detachably to the frame chassis by using a magnet. SOLUTION: The magnet 24 is attached to the fixed plate 18 of PDP 12 first. Then the positions of the magnet 24 and an opening part 20 are adjusted and a heat conductive sheet 14 is placed over the PDP 12. Then the frame chassis 16 is mounted on the heat conductive sheet 14 so that magnets 24 are inserted into respective opening parts 22. Lastly, a flange member 26 is attached to the tip surface of each magnet 24 from the back side of the frame chassis 16. The flange member 26 is formed to a larger diameter than the opening part 22 of the frame chassis 16, so the PDP 12 is never detached from the frame chassis 16 as long as the magnets 24 attract the fixed plate 18 or flange member 26.

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 attaching a display panel to a frame chassis.

[0002]

2. Description of the Related Art In recent years, a plasma display panel (hereinafter, referred to as a PDP) device has been put into practical use as a large-screen and thin image display device. 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, it has been general to fix the PDP to the frame chassis with a strong double-sided adhesive tape.

[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
Therefore, it is necessary to keep the PDP below a predetermined temperature. As an effective method therefor, as shown in FIG. 5, when fixing the PDP 12 with the double-sided adhesive tape 2 stuck around the frame chassis 16, the heat conductive sheet 14 is interposed between the frame chassis 16 and the PDP 12. A method has been put to practical use in which heat generated in the PDP 12 by the heat conductive sheet 14 is efficiently transmitted to the frame chassis 16 and radiated.

[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 thereafter. Therefore, even if the user needs to replace the PDP due to a failure or damage, a service person or the like cannot replace the PDP only on the spot,
Replace with the frame chassis or use PD
The entire P device must be transported to the manufacturer, replaced with a PDP, and then transported again to the user. Further, when the manufacturer removes the PDP from the frame chassis, the frame chassis may be deformed or damaged, so that the frame chassis cannot be reused. Therefore, in any case, there is a problem that the repair cost is increased.

[0005]

In order to solve the above-mentioned problems, a video display device according to the present invention has a display panel detachably mounted on a frame chassis using a magnet.

In the video display device of the present invention, a fixing plate is adhered to the back of the display panel, and a magnet adsorbed to the fixing plate is inserted into an opening of the frame chassis made of a non-magnetic material. The display panel may be attached to the frame chassis by adsorbing a flange member to a front end from a rear side of the frame chassis. In this case, the fixing plate may be made of a magnetic material or a magnet, and the flange member may be made of a magnetic material or a magnet.

Further, a fixing member is adhered to the back surface of the display panel, and the fixing member is inserted into an opening of the frame chassis made of a non-magnetic material. The display panel may be attached to the frame chassis by suction from a side. In this case, the fixing member may be made of a magnetic material and the flange member may be made of a magnet, or the fixing member may be made of a magnet, and the flange member may be made of a magnetic material or a magnet. You may.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an internal unit 1 of a plasma display device according to an embodiment of the present invention.
0 is an exploded perspective view. The internal unit 10 includes a PDP (display panel) 12 formed by joining two glass substrates.
And a heat conductive sheet 14 made of, for example, silicone or the like,
For example, it is composed of a frame chassis 16 made of aluminum. The PDP 12 and the frame chassis 16 are integrally assembled with the heat conductive sheet 14 interposed therebetween.

A plurality (9 in this embodiment) of fixing plates 18 are bonded and fixed to the back surface of the PDP 12. The fixing plate 18 is a plate-like member made of a magnetic material such as an iron plate, but the fixing plate 18 may be formed by a magnet.
In addition, for the reason described later, it is preferable that the fixing plate 18 is arranged evenly with respect to the PDP 12 and is arranged not only in the peripheral region of the PDP 12 but also in the central region thereof.

The heat conductive sheet 14 has a plurality of openings 20 at positions corresponding to the fixing plate 18 of the PDP 12. The frame chassis 16 also has a plurality of openings 22 at positions corresponding to the openings 20 of the heat conductive sheet 14.

The PDP 12 is attached to the frame chassis 16 using a magnet 24 and a flange member 26 as follows. As shown in FIGS. 1 and 2, first, the magnets 24 are attracted to the fixing plate 18 of the PDP 12, respectively. Next, the heat conductive sheet 14 is overlaid on the PDP 12 with the position of the magnet 24 and the position of the opening 20 aligned. Subsequently, the frame chassis 16 is placed on the heat conductive sheet 14 such that the magnets 24 are inserted into the respective openings 22. Finally, the flange member 26 is attracted to the front end surface of each magnet 24 from the rear side of the frame chassis 16. The flange member 26 may be formed of a magnetic material such as an iron plate, or may be formed of a magnet. Since the flange member 26 is formed to have a larger diameter than the opening 22 of the frame chassis 16, the fixing plate 18 of the magnet 24 or the flange member 26
The PDP 12 does not come off the frame chassis 12 as long as the suction of the PDP 12 does not come off. Thus, P
DP 12 is attached to frame chassis 16. In addition, in order to eliminate rattling of the PDP 12 after installation,
As shown in FIG. 2, it is preferable to provide a cushion member 28 between the flange member 26 and the frame chassis 16.

On the other hand, from the frame chassis 16 to the PDP 1
When removing the flange 2, it is only necessary to remove the flange member 26 attracted to the magnet 24.

As described above, according to the plasma display device of the present embodiment, the PDP 12 is
Since the PDP 12 is detachably attached to the PDP 6, the attachment and detachment of the PDP 12 can be easily performed. Therefore, when it is necessary to replace the PDP 12 at the user's site, a service person or the like can replace the PDP 12 on the spot without sending back the entire plasma display device to the manufacturer, so that the labor, time, and cost required for repair can be significantly reduced, Maintenance and serviceability at the time of PDP replacement are improved, and the frame chassis can be reused. Also, at the time of assembling, the trouble of attaching a double-sided adhesive tape for fixing a PDP as in the related art can be omitted, so that the assembling process can be simplified.

Further, the attraction force of each magnet 24 is constant, and the fixing plate 18 is evenly arranged not only in the peripheral area of the PDP 12 but also in the central area thereof.
2 and the heat conduction efficiency
It can be uniform over the entire area of P12.

FIG. 3 shows a modification of the fixing plate 18 and the like. In this mounting structure, a column 18a is integrally provided upright at the center of the fixed plate 18, and a magnet 24a and a flange member 26a are formed in a donut shape so as to fit into the column 18a. By doing so, the fixing plate 18 and the flange member 26 that are attracted to the magnet 24a
a, even if a force in the direction of shifting laterally acts due to the drop of the PDP 12 and the frame chassis 16, etc.
In addition, the flange member 26a is not easily detached from the magnet 24a, and the mounting strength is increased.

FIG. 4 shows another modification of the PDP mounting structure. This mounting structure uses a fixing member 30 in which the fixing plate 18 and the magnet 24 having the structure shown in FIG. 2 are integrally formed. In this case, the fixing member 30 bonded and fixed to the PDP 12 may be formed of a magnetic material such as an iron plate, and the flange member 26 may be formed of a magnet. The member may be formed of a magnetic material such as an iron plate or a magnet. With such a configuration, the number of parts is reduced, and the cost and the number of assembly steps can be reduced.

Although the above embodiment has been described with reference to a plasma display device having a heat conductive sheet, the present invention can be applied to a plasma display device having no heat conductive sheet. The present invention also includes a case where the display panel is detachably attached to a frame chassis made of a magnetic material with a magnet. Further, the present invention provides
As long as a structure for attaching the display panel to the frame chassis is included, the present invention can be applied to an image display device other than the plasma display device.

[0018]

As described above, according to the video display device of the present invention, the display panel is detachably attached to the frame chassis by using the magnet, so that the display panel can be easily attached and detached. As a result, maintenance and serviceability when replacing the display panel are improved, and the frame chassis can be reused. Further, the assembling process can be simplified since the time and effort for applying a double-sided adhesive tape can be omitted even when assembling the apparatus.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an internal unit of a plasma display device.

FIG. 2 is a partial sectional view of a PDP mounting structure.

FIG. 3 is a partial sectional view of a modification of the PDP mounting structure.

FIG. 4 is a partial sectional view of another modification of the PDP mounting structure.

FIG. 5 is a perspective view showing a conventional PDP mounting method.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Internal unit, 12 ... PDP, 14 ... Thermal conductive sheet, 16 ... Frame chassis, 18 ... Fixing plate, 22 ... Opening, 24 ... Magnet, 26 ... Flange member, 28 ...
Cushion member, 30 ... fixing member.

Continued on the front page (72) Inventor Yutaka Tani 1006 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F-term (reference) 5G435 AA12 AA17 AA19 BB06 EE04 EE13 HH18

Claims (7)

[Claims] 1. An image display device wherein a display panel is detachably attached to a frame chassis using a magnet. 2. A fixing plate is provided on a back surface of the display panel,
The display panel is attached to the frame chassis by inserting a magnet adsorbed to the fixing plate into an opening of the frame chassis made of a non-magnetic material and adsorbing a flange member to a front end of the magnet from a rear side of the frame chassis. The video display device according to claim 1, wherein the video display device is attached to a device. 3. The image display device according to claim 2, wherein the fixing plate is made of a magnetic material or a magnet. 4. The image display device according to claim 2, wherein the flange member is made of a magnetic material or a magnet. 5. A fixing member is provided on a back surface of the display panel, the fixing member is inserted into an opening of the frame chassis made of a non-magnetic material, and a flange member is provided at a tip of the fixing member on the rear side of the frame chassis. The image display device according to claim 1, wherein the display panel is attached to the frame chassis by sucking the display panel. 6. The image display device according to claim 5, wherein the fixing member is made of a magnetic material, and the flange member is made of a magnet. 7. The image display device according to claim 5, wherein the fixing member is made of a magnet, and the flange member is made of a magnetic material or a magnet.