JP3087880B2 - Plasma display device - Google Patents

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 a PDP).
Abbreviated) and a structure for radiating heat generated in the PDP.

[0002]

2. Description of the Related Art In a plasma display device, the depth of a PDP used for a display body is smaller than that of a cathode ray tube having the same screen size. For example, as shown in a perspective view of a PDP unit shown in FIG. By mounting a control circuit board 12 mounted with a control circuit of a PDP and the like on a mounting plate 15 attached by bonding or the like, the depth dimension of the apparatus can be reduced as compared with a receiver using a cathode ray tube. PDPs have the advantage that they can be greatly shortened and, for example, large screens can be placed in small rooms.
However, there is a problem that the color of the displayed image changes color when the temperature rises more than a specified value. On the other hand, a control circuit board 12 disposed opposite to the PDP 11 is provided with circuit components that generate heat. Therefore, the heat generated by these circuit components causes PDP
There is a problem that the temperature of 11 rises.

[0003]

As described above, the PDP
If the control circuit board is disposed so as to face the rear surface of the control circuit board, the depth of the device can be shortened. However, the PDP is easily heated by the heat generated by the components mounted on the control circuit board. It is an object of the present invention to efficiently radiate the heat of the mounting plate heated by the heat generated by the control circuit board so that the temperature of the PDP does not increase.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a housing and a P which is vertically disposed in the housing.
A plasma display device comprising a DP unit, wherein the PDP unit includes a PDP, a mounting plate mounted on a back surface of the PDP, and a PDP mounted on the mounting plate.
A control circuit board on which a control circuit of the DP is mounted; and a connection 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 piece protruded from the hole, or a heat-radiating member was fastened to the cut-and-raised piece to release the heat.

[0005]

With the above arrangement, in the plasma display device according to the present invention, a 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 backward 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 piece, whereby the PDP or An increase in the temperature of each component of the control circuit board is suppressed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the plasma display device according to the present invention will be described below 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 a main part of a PDP unit, FIG. 3 is a view showing an embodiment of a heat dissipation structure of the PDP unit, and FIG. (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 main part rear view.

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

The PDP unit 3 is configured as shown in FIG. That is, a control circuit board 12 is disposed opposite to the back surface of the PDP 11, and signals for controlling the PDP 11 are mainly supplied from the control circuit board 12 by upper and lower (not shown) connection lines 13, and the plasma discharge is performed. Is mainly supplied by the left and right connection lines 14. Control circuit board
Reference numeral 12 is fixed to a mounting plate 15 made of metal such as aluminum, which is mounted on the back surface of the PDP 11 by bonding or the like, by a fastening member.

The control circuit board 12 includes a circuit for supplying power for plasma discharge to the PDP 11, and components such as a field effect transistor (FET) used in this circuit generate heat. The mounting plate 15 is warmed by the heat radiated from the control circuit board 12 due to this heat generation, the PDP 11 is heated by the heat radiated from the mounting plate 15 secondarily, and the relatively heat- Electrolytic capacitors and the like that are weak to heat up. The PDP 11 has problems such as discoloration of the image when the temperature rises to a temperature higher than the specified value, and the heat of the electrolytic capacitor increases the leakage current due to heat, shortens the service life, and adversely affects the operation of the control circuit. There's a problem.

In order to efficiently radiate the heat of the mounting plate 15, a part of the mounting plate 15 is cut and raised as shown in, for example, a side sectional view (a) and a rear view (b) of FIG. Piece
21 and this cut and raised piece 21 was perforated in the control circuit board 12,
For example, it protrudes from the vertically long hole 22 to the rear side, and radiates heat from the protruding portion of the cut-and-raised piece 21. The holes 22 are formed as many as possible in consideration of the component arrangement state of the control circuit board 12, and cut-and-raised pieces are provided on the mounting plate 15 at positions corresponding to the holes 22.

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

[0012]

As described above, according to the plasma display device of the present invention, the heat stored in the mounting plate due to the heat from the control circuit board or PDP is transmitted through the holes formed in the control circuit board. Heat is radiated from the protruding cut-out pieces of the mounting plate, so that the temperature rise of the PDP and the temperature rise of relatively heat-sensitive components mounted on the control circuit board can be suppressed, and the image color of the PDP screen changes color. This has the effect of preventing bad influences such as inconvenience.

[Brief description of the 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 embodiment of a heat dissipation structure of the PDP unit, wherein FIG. 3A is a sectional side view of a main part, and FIG. 3B is a rear view of the main part.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front of housing 2 Rear of housing 3 PDP unit 11 PDP 12 Control circuit board 15 Mounting plate 21 Cut-out piece 22 Hole formed in control circuit board 32 Heat dissipation member

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G09F 9/00 H04N 5/64 541 H04N 5/66 101

Claims (6)

(57) [Claims] 1. A plasma display apparatus comprising: a housing; and a plasma display panel unit vertically disposed in the housing, wherein the plasma display panel unit includes: a plasma display panel;
A mounting plate mounted on the back surface of the plasma display panel, a control circuit board mounted with a control circuit of the plasma display panel mounted on the mounting plate, and a connection line connecting the plasma display panel and the control circuit board. 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 formed 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. A plurality of vertically long holes are formed in the control circuit board side by side, and portions corresponding to the respective holes of the mounting plate are cut and raised in a vertically long shape respectively. 2. The plasma display device according to claim 1, wherein each of said plurality of holes protrudes. 4. The plasma display device according to claim 1, wherein the projecting portion of the switching piece is bent in a direction parallel to the control circuit board. 5. The plasma display device according to claim 1, wherein a heat radiating member is fastened to the projecting portion of the cut and raised piece. 6. The plasma display device according to claim 5, wherein said heat radiating member is formed in an uneven shape.