JPH07210096A - Plasma display device - Google Patents

Abstract

PURPOSE:To prevent a PDP(plasma display panel) from rising in temperature by improving the radiation of heat generated by the PDP and the control circuit board for the PDP. CONSTITUTION:Part of the fitting plate 15 mounted on the back of the PDP for fitting the control circuit board 12 to the PDP 11 is cut and raised to form a raised piece 21, which is projected from a hole 22 formed in the control circuit board 12 to radiate the heat. In another way, another heat radiation member is fitted to the raised piece 21 to radiate the heat. Plural holes 22 are bored in the control circuit board and raised pieces 21 are provided at positions corresponding to the respective holes 22 to accelerate the discharge of the heat of a chassis 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display device, and more particularly to a plasma display panel (hereinafter referred to as PDP).
(Abbreviated)) and a structure for radiating heat generated in the PDP.

[0002]

2. Description of the Related Art In a plasma display device, since the depth of a PDP used as a display body is thinner than that of a cathode ray picture tube having the same screen size, for example, as shown in the perspective view of the PDP unit shown in FIG. By disposing the control circuit board 12 having the control circuit of the PDP and the like facing the mounting board 15 attached by adhesion or the like, the depth dimension of the device can be made larger than that of a receiver using a cathode ray picture tube. Although it has the advantage that it can be greatly shortened and that a large screen can be placed in a small room, for example, PDP
Has a problem that the color of the display image is discolored when the temperature rises above a prescribed level, while the control circuit board 12 arranged facing the PDP 11 is equipped with heat-generating circuit components. Therefore, heat generated by these circuit components causes PDP
There is a problem that the temperature of 11 rises.

[0003]

As described above, the PDP
The depth of the device can be shortened by disposing the control circuit board so as to face the back surface of the PDP, but this makes it easier for the PDP to be heated by the heat generated by the components mounted on the control circuit board. An object of the present invention is to efficiently dissipate the heat of the mounting plate heated by the heat generation of the control circuit board so that the temperature of the PDP does not rise.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a housing and a P vertically arranged in the housing.
A plasma display device including a DP unit, wherein the PDP unit includes a PDP, a mounting plate mounted on the back surface of the PDP, and a P mounted on the mounting plate.
A control circuit board having a DP control circuit mounted thereon, and a connecting line connecting the PDP and the control circuit board. A hole is formed in the control circuit board, and a part of the mounting plate is cut and raised. A plasma display device was configured such that the cut-and-raised pieces were projected from the holes, or a heat-radiating member was fastened to the cut-and-raised pieces to radiate heat.

[0005]

With the above construction, in the plasma display device according to the present invention, the cut-and-raised piece obtained by cutting and raising a part of the mounting plate mounted on the back surface of the PDP is mounted on the mounting plate. Since it protrudes rearward from the hole formed in the control circuit board, the heat generated in the PDP or the control circuit board and stored in the mounting plate is radiated from the cut-and-raised pieces, whereby the PDP or The rise in temperature of each component of the control circuit board is suppressed.

[0006]

Embodiments of the plasma display device according to the present invention will now be described in detail with reference to the drawings. FIG. 1 is a schematic view of a plasma display device according to the present invention, FIG. 2 is a perspective view of an essential part of a PDP unit, FIG. 3 is a view showing an embodiment of a heat dissipation structure of the PDP unit, and (a) is a side sectional view of the essential part. , (B) is a rear view of the main part, FIG. 4 is a view showing another embodiment of the heat dissipation structure of the PDP unit, (A) is a side sectional view of the main part,
(B) is a rear view of the main part.

In FIG. 1, 1 is a front part of the housing, 2 is a rear part of the housing, and 3 is a PDP unit. Upper surface of front part 1 of the housing, rear part 2 of the housing
Ventilation holes are provided on the upper and lower surfaces of the PDP so that the heat generated in the PDP unit 3 can be easily released. Reference numeral 4 is a speaker.

The PDP unit 3 is constructed as in the example shown in FIG. That is, the control circuit board 12 is disposed so as to face the back surface of the PDP 11, and the signals for controlling the PDP 11 are supplied from the control circuit board 12 mainly by the connecting lines 13 of the upper and lower parts (not shown), and the plasma discharge is performed. Power for is mainly supplied by the left and right connecting lines 14. Control circuit board
12 is fixed by a fastening member to a mounting plate 15 made of metal such as aluminum and attached to the back surface of the PDP 11 by adhesion or the like.

The control circuit board 12 has a circuit for supplying a power source for plasma discharge to the PDP 11, and parts such as a field effect transistor (FET) used in this circuit generate heat. This heat generation causes the mounting plate 15 to be warmed by the heat radiated from the control circuit board 12, the PDP 11 to be warmed by the heat radiated secondarily from the mounting plate 15, and the relatively high heat that is mounted on the control circuit board 12. The electrolytic capacitor, etc., which is weak, gets warm. The PDP 11 has a problem that the color of the image is discolored when the temperature rises above the specified level, and the electrolytic capacitor causes a leakage current to increase due to heat and shortens its life. There's a problem.

Therefore, in order to efficiently dissipate the heat of the mounting plate 15, for example, as shown in the side sectional view (a) and rear view (b) of FIG. Raised piece
21, and this cut-and-raised piece 21 is drilled in the control circuit board 12.
For example, the heat is projected from the vertically elongated hole 22 to the back side so that heat is radiated from the protruding portion of the cut and raised piece 21. The holes 22 are formed as many as possible in consideration of the arrangement of parts of the control circuit board 12, and the cut-and-raised pieces are provided on the mounting plate 15 at the positions corresponding to these holes 22.

FIG. 4 shows another embodiment, (a) is a side sectional view,
(B) is a rear view. In this example, another heat radiating member 32 is fastened to the cut-and-raised piece 31 cut and raised from the mounting plate 15 with a fastening member 33, and the heat of the mounting plate 15 is radiated by this heat radiating member 32. As described above, by using the separate heat dissipation member 32, even if the size of the cut-and-raised piece 31 is limited due to the arrangement of parts of the control circuit board 12 and the like, the heat dissipation area can be increased to efficiently dissipate the heat. I can do it. Alternatively, if the heat dissipation member 32 is made of, for example, a heat dissipation piece made of aluminum, the surface of which is made uneven by extrusion molding or the like, heat dissipation can be performed even more efficiently.

[0012]

As described above, according to the plasma display device of the present invention, the heat accumulated in the mounting plate due to the heat from the control circuit board or the PDP is discharged from the holes formed in the control circuit board. Since heat is radiated from the cut-and-raised pieces of the mounting plate that has protruded, it is possible to suppress the temperature rise of the PDP and the relatively heat-sensitive components mounted on the control circuit board, and the image color of the PDP screen changes color. It has the effect of preventing adverse effects such as

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of a plasma display device according to the present invention.

FIG. 2 is a perspective view showing an outline of a plasma display panel unit.

3A and 3B are diagrams showing an example of a heat dissipation structure of a PDP unit, FIG. 3A being a side sectional view of a main part, and FIG. 3B being a rear view of the main part.

4A and 4B are views showing another embodiment of the heat dissipation structure of the PDP unit, wherein FIG. 4A is a side sectional view of a main part, and FIG. 4B is a rear view of the main part.

[Explanation of symbols]

 1 front part of housing 2 rear part of housing 3 PDP unit 11 PDP 12 control circuit board 15 mounting plate 21 cut-and-raised piece 22 hole formed in control circuit board 32 heat dissipation member

Claims (6)

[Claims] 1. A plasma display device comprising a housing and a plasma display panel unit vertically arranged in the housing, wherein the plasma display panel unit is a plasma display panel,
A mounting plate mounted on the back surface of the plasma display panel, a control circuit board mounted with the control circuit of the plasma display panel mounted on the mounting plate, and a connecting line connecting the plasma display panel and the control circuit board. The plasma display device is characterized in that a hole is formed in the control circuit board, a part of the mounting plate is cut and raised, and the cut and raised piece is projected from the hole. 2. A vertically long hole is bored in the control circuit board, a part of the mounting plate is cut and raised in a vertically long shape, and the cut and raised piece is projected from the vertically long hole. The plasma display device according to claim 1, wherein: 3. The control circuit board is provided with a plurality of vertically elongated holes side by side, and the portions of the mounting plate corresponding to the holes are cut and raised, respectively, and the cut and raised pieces are formed in the vertically elongated shape. The plasma display device according to claim 1, wherein each of the shaped holes is made to project. 4. The plasma display device according to claim 1, wherein the protruding portion of the cut-out piece is bent in a direction parallel to the control circuit board. 5. The plasma display device according to claim 1, wherein a heat dissipation member is fastened to the protruding portion of the cut-and-raised piece. 6. The plasma display device according to claim 5, wherein the heat dissipation member is formed in an uneven shape.