JPH08162028A - Mount device for plasma display - Google Patents

Abstract

PURPOSE: To provide a plasma display unit capable of safely assembling a panel as a fragile article and coping with the condition of the environment such as vibration, impact, and change of a temperature and a moisture. CONSTITUTION: On an inner surface of mounts 1, 3 between which a panel 2 is to be housed, gasket releasing step parts 9, 12 and gasket fitting step parts 10, 11 taking the display screen shape as an inner guide are provided, and a cushioning part 15 is so provided as to face the panel end surface. An EMI filter is stuck on the display screen of the panel 2 by optical hardening adhesives 8, and the interference of gaskets 4, 5 in fastening of the mount members 1, 3 are set to the range from 8 to 12%.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display mounting apparatus in which a peripheral edge portion of a plasma display panel which is out of the front screen is sandwiched and fixed by a pair of mounting members via a gasket.

[0002]

2. Description of the Related Art FIG. 6 shows an EMI (Electro, Mag
FIG. 3 is a partial cross-sectional view showing a conventional plasma display mounting device to which a net, interference) filter is attached. In the figure, a back side mounting member 1 has an O-ring 19 as a gasket placed on its step portion 1a. A plasma display panel 2 (hereinafter abbreviated as a panel) having a flexible lead wire 21 is placed on the O-ring 19, and an EMI filter 60 is placed on the panel 2 with a gasket 50 interposed therebetween.
Further, an O-ring 26, which is a front side gasket, is applied to the stepped portion 60a of the EMI filter 60, the O-ring 26 is pressed by the stepped portion 3a of the front side mount member 3, and the back side mount member 1 and the front side are tightened with a tightening screw 17. This is a configuration in which the mount member 3 is clamped and fixed. Reference numeral 18 indicates the display screen side.

The lead wire 21 is pulled out in the direction of arrow 22 from the opening of the back side mount member 1 and connected to a circuit board (not shown) or a power source. Further, the panel 2 and the EMI filter 6 generated by the interposition of the gasket 50.
The gap 20 between 0 has a function of buffering both 2 and 60 and a function of preventing the generation of bubbles. The panel 2 is composed of a front side panel 2a and a back side panel 2b, and a notch portion 2c as a terminal connecting portion is provided around the front side panel 2a and the back side panel 2b.
Are formed.

FIG. 7 is a partial sectional view showing a mounting device for a plasma display without an EMI filter. An O-ring 19 is arranged in the guide groove 1b of the back side mounting member 1, and a panel is mounted on the O-ring 19. 2 is placed and the front side mount member 3 is superposed on the back side mount member 1 so that the O-ring 26 arranged in the guide groove 3b of the front side mount member 3 is in contact with the surface of the panel 2. Is integrally fixed by a tightening screw 17.

[0005]

Since the conventional plasma display mounting apparatus is constructed as described above, there is no escape area for the gasket 50 that is deformed when the back side mounting member 1 and the front side mounting member 3 are clamped and fixed. Therefore, as shown in FIG. 8, when the pressing force due to the deformation of the gasket 50 presses the panel 2 toward the notch 2c as indicated by the arrow, a bending force is applied to the panel 2 by this pressing force, and a crack 25 is generated. However, there is a problem that the panel 2 is damaged.

When installing an EMI filter, the E
In the mounting structure of the MI filter, it was necessary to assemble it considering heat resistance, vibration resistance, and shock resistance. In addition, guide grooves 1b, 3 for inserting the O-rings 19, 26 in the mount members 1, 3
Forming b makes the processing cost of the mount members 1 and 3 relatively expensive, and the O-ring as a gasket to be arranged in the guide grooves 1b and 3b must be made in accordance with the groove shape, and the processing cost is also high. There was a problem of this.

Depending on the specifications, the plasma display unit may be used in a place with severe environmental conditions.
When the EMI filter 60 is simply attached to the panel 2,
When the temperature change and the humidity change are large, air bubbles or wrinkles are generated between the EMI filter 60 and the panel 2, which makes it difficult to see the display surface.

Further, when the space 20 is provided between the panel 2 and the EMI filter 60 as in the conventional example shown in FIG. 6, dew condensation may occur depending on the use conditions.
There is also a problem that the I filter 60 and the panel 2 resonate.

Further, there is a problem that the panel is damaged due to the contact between the panel end surface and the mount member due to the thermal expansion of the panel at a high temperature.

The present invention has been made to solve the above problems, and a first object thereof is to prevent the panel from being damaged by the pressing force of the gasket which is deformed during assembly. The second purpose is to simplify the shape of this gasket and to reduce the processing cost of the gasket guide, and to secure the tightening margin of the gasket against vibration and shock resistance to stabilize the quality. EMI for the purpose of 3
A fourth object is to prevent the generation of bubbles and a decrease in brightness due to the assembly of the filter, and a fifth object is to prevent the panel from being damaged due to the contact between the panel end surface and the mount due to the thermal expansion of the panel. And

[0011]

According to a first aspect of the present invention, there is provided a plasma display mounting apparatus, wherein a gasket escape step is provided on an inner surface of a pair of mounting members for sandwiching a panel.

According to a second aspect of the present invention, there is provided a plasma display mounting apparatus, wherein a pair of mounting members are provided on the inner surfaces thereof with a step portion for fitting a gasket having a surface screen shape as an inner guide. It has holes.

In the plasma display mounting apparatus according to the third aspect of the present invention, the ratio of the thickness to the width of the gasket is 2: 7.
As a guide, the tightening margin of the gasket is set to 7 to 12%.

According to a fourth aspect of the present invention, there is provided a plasma display mounting device in which an EMI filter is attached to a display screen of a panel with a photocurable adhesive.

According to a fifth aspect of the present invention, there is provided a plasma display mounting apparatus, wherein a cushioning member is provided on an inner surface of the mount facing the panel end surface.

[0016]

According to the first aspect of the present invention, the gasket relief step portion allows the gasket deformed at the time of assembling to escape, so that unnecessary pressing force is not applied to the panel and damage to the panel can be prevented.

The mount member according to the invention of claim 2 is
Since the gasket fitting stepped portion having the display screen shape as the inner guide is provided, the gasket shape can be simplified and the processing cost of the gasket guide can be reduced.

In the gasket of the third aspect of the present invention, the tightening margin is set to 7 to 12% based on the ratio of thickness to width of 2: 7 as a guide, so that vibration resistance and impact resistance are secured and quality is stabilized. You can

Since the EMI filter according to the invention of claim 4 is pasted with a photo-curing adhesive, it is possible to prevent thermal deformation and generation of air bubbles due to the assembling of the EMI filter, deterioration of brightness and the like.

In the mount according to the invention of claim 5, a cushioning member is provided on the inner surface of the mount so as to face the panel end surface, so that damage to the panel due to contact between the panel end surface and the mount inner surface due to thermal expansion of the panel is prevented. can do.

[0021]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a mounting state of a plasma display unit showing a mounting shape and a mounting hole 70 when mounted on a vehicle or the like, FIG. 2 is a sectional view thereof, and FIGS.
Is a detailed view of the cross section.

In the figure, the back side mount member 1 and the front side mount member 3 face the inner surfaces thereof, and are provided with gasket guides 10 and 11 and gasket escape step portions 9 and 12.
Is provided. A cushioning member 15 such as a silicone resin is provided on the inner surfaces of the mount members 1 and 3 so as to face the peripheral surface of the panel 2.

An EMI filter 6 is attached to the surface of the panel 2 of the display by a photo-curable adhesive. This photo-curable adhesive is one that is cured by ultraviolet rays, and for example, UV bonding EPOXY of Three Bond.
Rezin 3103 or the like is used. And the above EM
A transparent conductive film 7 is formed on the surface of the I filter 6 by performing a transparent ITO process.

Of the gaskets 4 and 5 to be assembled along the above gasket guides 10 and 11, especially the gasket 5
Is made of a conductive rubber plate in order to electrically connect the conductive film 7 on the surface of the EMI filter 6 to the mount member 3 and to serve as a cushioning material. The panel 2 is sandwiched by the gaskets 4 and 5, and the mount members 1 and 3 are integrally tightened and fixed by the tightening screw 17. 16 is a gap formed between the back side mount portion 1 and the panel 2 and between the conductive film 7 on the surface of the panel 2 and the front side mount member 3.

In this case, the deformed portions 4a and 5a of the gaskets 4 and 5 deformed by the tightening pressure are indicated by arrows 13 and 1 in FIG.
As shown in FIG. 4, the gasket 2 protrudes into the gasket escape steps 9 and 12 and does not apply an unnecessary pressing force to the panel 2. Therefore, the panel 2 is not damaged.

Conventionally, the gaskets 4 and 5 are used as fitting guides by mounting guide grooves 1b and 3b in the mount members 1 and 3 as shown in FIG. 7, but when the display screen has a rectangular shape. Grooving becomes expensive, and the gasket that matches the groove shape also has a special shape. Therefore, in this embodiment, a guide step portion 10 is provided on the back side mount member 1 and a guide step portion 11 is provided on the front side mount member 3 using the display screen shape as an inner guide, and the gaskets 4 and 5 are plate-shaped and vibrate and impact. A structure for facilitating the adjustment of absorption of the exhaust gas, etc. is provided, and as shown in FIG. 4, an escape hole 4'of the exhaust pipe portion provided in the gasket 4 corresponding to the exhaust pipe chip portion of the panel 2
Have.

In order to secure the panel 2 against vibrations and shocks safely, the tightening margin 23 of the gaskets 4 and 5 (FIG. 2).
Depends on the gasket material, such as durability, mount material, ambient temperature during use, panel mass and thickness, etc., but general vibration such as vehicle, shock and ambient temperature -35
Under the condition of ℃ to 100 ℃, the tightening margin of 7 to 12% is good with the ratio of gasket thickness to width of 2: 7 as a guide. Chloroprene rubber, for example, is used as the material of the gasket.

Since the EMI filter 6 is adhered to the surface of the panel 2 with the photo-curable adhesive 8, it is possible to prevent generation of bubbles and wrinkles due to temperature change and humidity change, water drops due to dew condensation, and to prevent vibration. However, resonance and the like can be prevented. In addition,
It is appropriate that the thickness of the EMI filter 6 is about 0.1 to 0.5 mm considering the loss of brightness and viewing angle.

Even if the end face of the panel comes into contact with the mount due to thermal expansion at high temperature, since the cushioning member 15 is provided on the surface, damage to the panel 2 can be prevented. Further, even if the cushioning member 15 is thin, the effect is great, the workability is good, and the cushioning member 15 can be used for a portion having a small gap, so that it is effective for downsizing the plasma display unit.

Example 2. Although the first embodiment has been illustrated as being mounted on a vehicle, it can also be used as a plasma display unit used as a display screen of a ship or an aircraft under severe conditions such as vibration, shock and temperature.

[0031]

According to the first aspect of the present invention, the gasket escape step is provided on the inner surface of the mount member, so that the deformed gasket can be escaped at the time of assembly so that unnecessary pressing force is not applied to the panel. It is possible to prevent the panel from being damaged.

According to the second aspect of the present invention, since the gasket fitting step portion having the surface screen shape as the inner guide is provided on the mount member, the gasket shape is simplified and the processing cost of the gasket guide is reduced. be able to.

According to the third aspect of the present invention, the tightening margin of the gasket is set to 7 to 12% based on the ratio of the thickness to the width of 2: 7, so that the thickness of the panel and the thickness of the EMI filter or the like change. , It is easy to set the work size on the mount member side,
It is possible to secure vibration resistance and shock resistance and stabilize quality.

According to the fourth aspect of the present invention, since the EMI filter is attached to the photo-curable adhesive panel, it is possible to prevent thermal deformation and generation of air bubbles due to the assembly of the EMI filter, reduction in brightness, and the like. The same effect as a glass surface can be obtained.

According to the invention of claim 5, since the cushioning member is provided on the inner surface of the mount member so as to face the panel single surface, damage to the panel due to contact between the panel end surface and the mount member due to thermal expansion is prevented. can do.

[Brief description of drawings]

FIG. 1 is a perspective view showing a mounted state of a plasma display unit according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 3 is an enlarged view of a part of FIG.

FIG. 4 is a plan view showing a gasket guide and a buffer resin application portion.

FIG. 5 is an enlarged cross-sectional view showing an EMI filter mounting structure.

FIG. 6 is a partial cross-sectional view of a conventional plasma display having an EMI filter attached.

FIG. 7 is a partial sectional view of a conventional plasma display without an EMI filter attached.

8 is an enlarged view of a part of FIG. 7. FIG.

[Explanation of symbols]

1, 3 Mount member, 2 Plasma display panel, 4, 5 Gasket, 6 EMI filter, 8 Photocurable adhesive, 9, 12 Gasket escape step, 1
0, 11 Gasket guide, 15 Buffer member, 23
Tightening.

Claims (5)

[Claims] 1. A plasma display mounting apparatus in which a peripheral edge portion of a plasma display panel, which is out of a display screen, is sandwiched by a pair of mount members via a gasket, and the pair of mount members are clamped and fixed to each other.
A mounting device for a plasma display, wherein a step for escaping the gasket is provided on the inner surfaces of the pair of mounting members. 2. The pair of mount members is provided with a gasket fitting step portion having the display screen shape as an inner guide, and the gasket is provided with an exhaust pipe escape hole of the plasma display panel. Item 2. A plasma display mounting device according to item 1. 3. The mounting device for a plasma display according to claim 1, wherein the tightening margin of the gasket is set to 7 to 12% based on a ratio of the thickness and the width of the gasket of 2: 7. 4. The mounting device for a plasma display according to claim 1, wherein an EMI filter is attached to a display screen of the plasma display panel with a photocurable adhesive. 5. The mounting device for a plasma display according to claim 1, wherein a cushioning member is provided on the inner surfaces of the pair of mounting members so as to face the peripheral surface of the plasma display panel.