JPH11284379A - Plasma display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a plasma display device thinner as a whole without deteriorating the radiating effect of a PDP. SOLUTION: A plasma display panel(PDP) 4 is mounted inside to constitute a plasma display device 1 displaying TV pictures, etc., from a window of the frontal surface frame 2. An optical filter 3 is adhered on the window of the frontal surface frame 2 for protection of the PDP, etc. A highly heat-conductive member is provided between the back surface of the PDP 4 and a circuit board 8 on which an electronic circuit, etc., comprising an electronic part 8a, etc., to drive the PDP are mounted. The circuit board 8 is thermally adhered onto the PDP 4 to make an integral structure. Heat generated from the back surface of the PDP 4 and heat generated from the circuit board 8 are radiated together from the tope of the circuit board by a radiating fan 10, etc., in this structure.

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 capable of reducing the thickness and considering a heat radiation effect.

[0002]

2. Description of the Related Art PDPs are widely used as thin display devices capable of displaying television images and the like on a large screen. However, since the PDP itself is thin, local temperature rise is likely to occur due to heat concentration during display. Besides, P
Since an optical filter or the like for protecting the PDP or the like is arranged on the front surface of the DP, sufficient heat radiation cannot be achieved. The back is PD
It is necessary to mount a circuit board or the like for driving P, and heat radiation is hindered. Therefore, even if the PDP itself is thin, the plasma display device as a whole has a certain thickness, and there is a problem that the characteristics of the panel display cannot be sufficiently obtained.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to reduce the thickness of an entire plasma display device without impairing the heat radiation effect of a PDP.

[0004]

SUMMARY OF THE INVENTION In a plasma display device for displaying television images and the like using a PDP (plasma display panel), a back surface of the PDP and the PD are provided.
A high thermal conductive member is sandwiched between circuit boards on which electronic circuits for driving the P are mounted, and the circuit board is thermally attached to and attached to the PDP. The heat generated from the substrate is radiated from the circuit board.

[0005] A high thermal conductive plate material such as an aluminum plate is sandwiched between the high thermal conductive members so as to equalize the temperature of the PDP in the plane direction.

The high thermal conductive plate material is a part of a frame forming a skeleton of the plasma display device.

[0007] A plurality of heat pipes are provided between the high heat conductive member and the circuit board.

A heat conductive sheet made of a high heat conductive material such as a silicon resin is sandwiched between the high heat conductive plate and the circuit board.

[0009] A plurality of bosses are provided on the circuit board side of the high thermal conductive plate material, and the circuit board is screwed to the bosses with threaded holes.

[0010] Between the PDP and the plate having high thermal conductivity,
A heat conductive sheet made of a high heat conductive material such as silicon resin is sandwiched.

A boss made of a metal bar or the like is attached to the back surface of the PDP, and the high thermal conductive plate is screwed into a threaded hole opened in the boss.

[0012] Between the PDP and the plate having high thermal conductivity,
A heat conductive sheet made of a high heat conductive material such as a silicone resin is sandwiched in one part, and an adhesive sheet such as a double-sided tape is adhered to another part.

The PDP and the plate having high thermal conductivity are adhered to each other with an adhesive having a high heat transmission such as an epoxy resin mixed with copper powder.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a conceptual diagram of (A) a front view (part) and (B) a side sectional view (cc section in FIG. 1) of the plasma display device according to the present invention. PDP inside
(Plasma display panel) 4 is mounted to constitute a plasma display device 1 for displaying television images and the like from the windows of the front frame 2. An optical filter 3 is attached to the window of the front frame 2 to protect the PDP. A high thermal conductive member is interposed between the back surface of the PDP 4 and a circuit board 8 on which an electronic circuit or the like including the electronic components 8a for driving the PDP is mounted, and the circuit board 8 is thermally attached to the PDP 4. A structure in which the PDP 4 and the circuit board 8 are thermally integrated with each other, and the heat generated on the back of the PDP 4 and the heat generated on the circuit board 8 are integrated from the circuit board and radiated by the radiating fan 10 or the like. And

The high thermal conductive member is made of, for example, an aluminum plate 6 or a thermal conductive sheet 7 as a high thermal conductive plate material. The thermal integration of the PDP 4 and the circuit board 6 and the surface of the PDP are performed. It also aims at soaking in the direction. The aluminum plate 6 attached to the back surface of the PDP simplifies the entire configuration as a part of the frame forming the skeleton of the plasma display device, and contributes to making the plasma display device 1 thinner. The aluminum plate 6 holds the front frame 2 and the rear housing 9 as the housing of the PDP 4 and the plasma display device 1. The heat conductive sheet 7 is made of a material having a high heat transfer property such as a silicone resin, and has a plurality of bosses 6a which are provided upright on the surface of the aluminum plate 6 by screwing or the like. The substrate 8 is screwed and held. Note that a plurality of heat pipes (not shown) may be provided between the surface of the aluminum plate 6 and the heat conductive sheet 7 so as to enhance the soaking in the plane direction of the PDP.

The above-mentioned object can be achieved by attaching the PDP 4 to the aluminum plate 6 with an adhesive having a high heat transfer property such as an epoxy resin mixed with copper powder. Further, as another embodiment, similarly to the above configuration between the PDP and the circuit board, a heat conductive sheet 5 made of a high heat conductive material such as a silicon resin is sandwiched between the aluminum plate 6 and the PDP 4, A structure in which an aluminum plate is screwed into a threaded hole opened in a boss 4a made of a metal bar or the like adhered to the back surface of the PDP 4 can also be used. Alternatively, a structure in which a heat conductive sheet 5 made of a high heat conductive material such as silicon resin is sandwiched between a part between the PDP 4 and the aluminum plate 6 and the other part is adhered with an adhesive sheet such as a double-sided tape. It can also be.

[0017]

As described above, in a plasma display device for displaying television images or the like using a PDP, high thermal conductivity is provided between the back surface of the PDP and a circuit board on which electronic circuits and the like for driving the PDP are mounted. The circuit board is thermally attached to and attached to the PDP by sandwiching the members, and the PDP is provided.
By radiating heat generated on the back of the circuit board and heat generated on the circuit board integrally from the circuit board, P
The thickness of the plasma display device can be reduced without impairing the heat radiation effect of the DP, and the characteristics of the PDP can be exhibited.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of (A) a front view (part), and (B) a side sectional view (cc section in FIG. 1) of a plasma display device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plasma display apparatus 2 Front frame 3 Optical filter 4 PDP 5, 7 Thermal conductive sheet 6 Aluminum plate 8 Circuit board 9 Rear housing 10 Heat dissipation fan

Claims (10)

[Claims] 1. PDP (Plasma Display Panel)
In a plasma display device that displays television images and the like by using a PDP, a high thermal conductive member is sandwiched between a back surface of the PDP and a circuit board on which an electronic circuit for driving the PDP is mounted, and the circuit board is attached to the PDP. Thermally attached and attached,
A plasma display device having a structure in which heat generated on the back surface of the PDP and heat generated on the circuit board are radiated from the circuit board. 2. The plasma display according to claim 1, wherein a high thermal conductivity plate such as an aluminum plate is sandwiched between the high thermal conductivity members so as to equalize the temperature of the PDP in a plane direction. apparatus. 3. The plasma display device according to claim 2, wherein the high thermal conductive plate material is a part of a frame forming a skeleton of the plasma display device. 4. The plasma display device according to claim 2, wherein a plurality of heat pipes are provided between the high thermal conductive member and the circuit board. 5. The plasma display according to claim 2, wherein a heat conductive sheet made of a high heat conductive material such as a silicon resin is sandwiched between the high heat conductive plate and the circuit board. apparatus. 6. The plasma according to claim 2, wherein a plurality of bosses are provided on the circuit board side of the high thermal conductive plate material, and the circuit board is screwed into the bosses with threaded holes. Display device. 7. The plasma display device according to claim 2, wherein a thermally conductive sheet made of a highly thermally conductive material such as a silicon resin is sandwiched between the PDP and a highly thermally conductive plate material. 8. The high thermal conductivity plate according to claim 2, wherein a boss made of a metal bar or the like is attached to the back surface of said PDP, and said high thermal conductive plate is screwed into a threaded hole opened in said boss. Plasma display device. 9. A heat conductive sheet made of a high heat conductive material such as a silicone resin is partially sandwiched between the PDP and a plate material having a high heat conductivity, and an adhesive sheet such as a double-sided tape is adhered to another portion. 3. The plasma display device according to claim 2, wherein the device is attached. 10. The plasma display apparatus according to claim 2, wherein the PDP and the high thermal conductive plate material are adhered to each other with a high heat transfer adhesive such as an epoxy resin mixed with copper powder.