JP3219176B2 - 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).
) To prevent the temperature of the PDP from rising due to heat generated in the control circuit board.

[0002]

2. Description of the Related Art In a plasma display device, the depth of a PDP used for a display is smaller than that of a cathode ray tube having the same screen size. Therefore, a PDP control circuit and the like are mounted on a mounting plate attached to the back of the PDP by bonding or the like. A PDP unit is constructed by disposing a control circuit board on which the PDP is mounted so as to face each other, and as shown in FIG. The depth dimension of the device can be greatly reduced compared to a receiver using
For example, it has an advantage that a large screen can be placed in a small room. However, the PDP has a problem in that the color of the displayed image changes when the temperature rises more than a specified level. Since a control circuit board disposed to face the PDP has circuit components that generate heat, the PDP has a problem. However, there is a problem that the temperature of the mounting plate rises due to heat generated by these circuit components, and the temperature of the PDP rises due to radiant heat from the mounting plate.

[0003]

As described above, the PDP
If the control circuit board is disposed so as to face the rear surface of the PDP, the depth of the device can be shortened. However, the temperature of the PDP tends to increase due to the heat generated by the components mounted on the control circuit board. An object of the present invention is to lower the temperature by projecting the side of the mounting plate provided between the PDP and the control circuit board from the side surface of the PDP unit, increasing the area of the mounting plate and increasing the heat radiation capability, thereby reducing the temperature of the PDP. The purpose of the present invention is to prevent the temperature from rising.

[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 is mounted on a PDP, a mounting plate protruding from a side surface of a PDP unit mounted on a back surface of the PDP, and the mounting plate. A control circuit board on which a control circuit of the PDP is mounted; and a connection line connecting the PDP and the control circuit board, the connection line passing through a protrusion of the mounting plate.
For this reason, the side corresponding to the projection has a constricted
A plasma display device was constructed from the rat cable .

[0005]

With the above configuration, in the plasma display device according to the present invention, the side of the mounting plate mounted on the back of the PDP is made to protrude from the side of the PDP unit to increase the heat radiation area. The heat stored in the mounting plate due to the radiation from the plate or the like is easily radiated, and the temperature of the mounting plate is reduced, so that the heat radiation to the PDP and the control circuit board is reduced.

[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, and FIGS. 2 and 3 are perspective views of a main part showing an embodiment of a PDP unit.

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. This PDP unit is an example in which a mounting plate 5 projects from the side surface in an L-shape. Housing front 1
, And the upper and lower surfaces of the housing rear part 2 are provided with ventilation holes so that heat generated in the PDP unit 3 is easily released. Reference numeral 4 denotes a speaker.

In FIG. 2, a mounting plate 5 is made of a metal such as aluminum and fixed to the back surface of the PDP 11 by bonding or the like.
The control circuit board 12 and the PDP 11 are connected by flat cables 13 and 14 to form a PDP unit. The control circuit board 12 has 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 temperature of the PDP 11 itself also rises due to the plasma discharge. The mounting plate 5 is warmed by these heats, and the PDP 11 is heated by the heat radiated from the mounting plate 5 by secondary radiation.
Further, an electrolytic capacitor or the like mounted on the control circuit board 12 that is relatively weak to heat is heated. The PDP 11 has problems such as discoloration of the image when the temperature rises to a temperature higher than the specified value. In addition, the heat of the electrolytic capacitor increases due to the increase in leakage current, shortening the service life, and adversely affecting the operation of the control circuit. There's a problem.

In the example shown in FIG. 2, the left side of the mounting plate 5 is extended from the front of the PDP 11 and bent rearward in an L-shape to increase the surface area of the mounting plate 5 without increasing the lateral width of the device. ing. A flat cable 13 for connecting the control circuit board 12 and the PDP 11 is provided through a hole 15 formed in the mounting plate 5, and a flat cable 13 is provided above and below the PDP unit (not shown). 14 are arranged. The mounting plate 5 may extend rightward, upward or downward of the PDP 11 according to the position of the flat cable, or may be bent in an L-shape as shown in the figure.

In FIG. 3, the side portion 21 of the flat cable 14 is formed in a constricted shape to form a gap between the flat cable 14 and an adjacent flat cable, and the mounting plate 5 is protruded from this gap. This is an example in which a member 23 is attached to dissipate heat of the attachment plate 5. Although the figure shows an example in which the mounting plate 5 protrudes upward, the heat radiation member 23 may be mounted so as to protrude downward or to the side of the PDP unit. Further, the projecting portion 22 may be bent in an L-shape, and a heat radiation member may be attached to the bent portion. Mounting plate 5
Since the amount of heat radiated to the PDP 11 or the control circuit board 12 decreases due to the decrease in the temperature, the rise in the temperature of the PDP or the like can be reduced.

[0011]

As described above, according to the plasma display device of the present invention, the control circuit board can be mounted on the PDP.
Since the surface area is increased by extending the mounting plate for mounting on the side to increase the surface area, the heat absorbed by the mounting plate due to the heat radiation from the control circuit board or the PDP is efficiently radiated, and the temperature of the mounting plate decreases, and therefore, In addition, it is possible to prevent the temperature of the PDP or the like from rising due to re-radiation heat from the mounting plate, and to reduce adverse effects such as discoloration of the image color of the PDP screen.

[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 of an essential part showing one embodiment of a plasma display panel unit.

FIG. 3 is a perspective view of a main part showing another embodiment of the plasma display panel unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front of housing 2 Rear of housing 3 PDP unit 5 Mounting plate 11 PDP 12 Control circuit board 13 Connection line (flat cable) 14 Connection line (flat cable) 23 Heat dissipation member

Claims (3)

(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 having a side protruding from the side of the plasma display panel unit mounted on the back of the plasma display panel, a control circuit board mounted with a control circuit of the plasma display panel mounted on the mounting plate,
A connection line connecting the plasma display panel and a control circuit board, the connection line passing through a protrusion of the mounting plate;
A flat cable with a constricted side at the side corresponding to the protrusion
A plasma display apparatus characterized by being configured from a Buru. 2. A method according to claim 1 Symbol placement of the plasma display apparatus is characterized in that bending a protruding portion of the mounting plate in an L shape. 3. A process according to claim 1 Symbol placement of the plasma display apparatus is characterized in that attaching the heat-radiating member to the projecting portion of the mounting plate.