JP2000132112A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To optimize the operation of a heat radiator when a display device is set rotated by 90 or 180 degrees around the center of a display surface. SOLUTION: Upper fans 11 are operated by the output of an angle detecting device 13, and side face fans 12 are stopped. Thereby, heat is sufficiently radiated from this display device, and a noise from the fans 11 and 12 is suppressed to the minimum.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to heat radiation of a display device.

[0002]

2. Description of the Related Art Conventionally, as a heat radiation structure of a plasma display panel (hereinafter referred to as a PDP), for example, Japanese Patent Laid-Open No. 10-1 is disclosed.
What is described in 17315 gazette is known. Here, a conventional heat radiating device for a PDP will be briefly described. FIG. 7 shows a heat radiating device of a conventional PDP. The drive circuit board 2 is arranged on the back of the PDP 1 with a required interval,
Electrodes led to the upper, lower and side edges of the outer periphery of DP1 are connected to conductors led to the sides corresponding to the respective sides of the outer periphery of drive circuit board 2 by flat cables 3, respectively. 2 and a ventilation fan 4 for exhausting air through the ventilation hole 4 is attached.
1. Exhaust air that has risen due to heat generated by the PDP 1 staying in a space surrounded by the drive circuit board 2 and the flat cable 3 and exhaust the air out of the housing through an exhaust hole 9 by an exhaust fan 8 at the rear part 7 of the housing. , PDP1 is suppressed from rising.

[0003]

However, in the above configuration, when the PDP is installed by rotating the PDP by 90 degrees around the display surface, or when the PDP is installed upside down, sufficient heat radiation cannot be obtained. There was a problem. Further, when a fan is used as the heat radiating device, there is a problem that fan noise is generated in accordance with the rotation of the fan.

[0004]

In order to solve the above-mentioned problems, a display device of the present invention detects an installation angle by rotating the display surface by 90 degrees around the display surface or when installing the display device upside down. The operation of the heat radiating device is optimized based on the output of the angle detector.

According to the present invention, sufficient heat radiation can be obtained even when the display screen is rotated by 90 degrees around the display surface or installed upside down. Further, generation of fan noise according to the rotation of the fan can be minimized.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first aspect of the present invention has an angle detector for detecting an installation angle of a display device and a radiator for radiating heat generated from the display device. It is a display device characterized by optimizing the operation of the heat radiating device, and obtains sufficient heat radiation even when it is installed by rotating it about 90 degrees around the display surface or installed upside down, This has the effect of minimizing the generation of device noise.

In a second aspect of the present invention, the display device is a plasma display panel, the heat radiating device is a fan, and the optimal control is performed by either operation or stop of the fan. The display device can be rotated by 90 degrees around the display surface or installed upside down to obtain sufficient heat radiation and minimize the noise of the heat radiation device. 3. The display device according to claim 2, wherein the display device is a plasma display panel, the heat radiating device is a fan, and the control is optimally performed by a calculation device and the rotation speed of the fan. In this case, sufficient heat radiation can be obtained even when the display is rotated 90 degrees around the display surface, and the generation of fan noise according to the rotation of the fan is minimized. It has the effect that the door can be.

According to a fourth aspect of the present invention, the display device further includes a temperature detector and a calculator for calculating an output of the temperature detector and an output of the angle detector. The display device according to any one of the first to third aspects of the present invention is characterized by performing optimal control, and can minimize the generation of fan noise in accordance with the ambient temperature.

(Embodiment 1) Hereinafter, a display device according to claims 1 to 3 of the present invention will be described with reference to FIGS. 1, 2 and 3. FIG.

FIG. 1 shows claims 1 and 3 of the present invention.
It is a principal part perspective view of the display device described in. In FIG. 1, reference numeral 1 denotes a PDP, 11 denotes a fan installed on the upper part of the PDP, 12 denotes a fan installed on the side of the PDP, 7 denotes a rear housing, and 9 denotes an exhaust hole. FIG. 2 is a rear view of the main part at the time of normal installation. FIG. 3 is a rear view of the main part at the time of rotation by 90 degrees.

In FIG. 2, the upper fan 11 is operated by the output of the angle detector 13, and the side fan 12 is stopped. In FIG. 3, the upper fan 11 is stopped by the output of the angle detector 13 and the side fan 12 is stopped.
Is driving.

The display device having the above-described structure has a simple structure, and provides sufficient heat radiation during normal installation and when the display device is rotated by 90 degrees around the display surface, and minimizes fan noise. Can be done.

(Embodiment 2) Hereinafter, a display device according to claims 1 and 4 of the present invention will be described with reference to FIG. 2, FIG. 3, and FIG. FIG. 2 is a rear view of the main part at the time of normal installation. FIG. 3 is a rear view of the main part at the time of rotation by 90 degrees. FIG. 5 is a rear view of the main part at the time of 45-degree rotation.

In FIG. 2, the upper fan 11 is operated by the output of the angle detector 13 and the output 14 of the arithmetic unit, and the side fan 12 is stopped.

In FIG. 3, the upper fan 11 is stopped by the output of the angle detector 13 and the output 14 of the arithmetic unit.
The side fan 12 is operating.

In FIG. 5, the upper fan 11 and the side fan 12 are operated by the output of the angle detector 13 and the output 14 of the calculator.

According to the display device having the above-described configuration, the upper fan 11 and the side fan 12 are controlled in a direction and an intensity that promote natural convection of the air in the display device at an arbitrary installation angle from a normal installation to a 90-degree rotation installation. By doing so, sufficient heat radiation can be obtained at an arbitrary installation angle from normal installation to 90-degree rotation installation, and generation of fan noise can be minimized.

(Embodiment 3) Hereinafter, a display device according to claims 1 and 5 of the present invention will be described with reference to FIGS. 2, 3, 4, and 5. FIG. FIG. 2 is a rear view of the main part at the time of normal installation. FIG. 3 is a rear view of the main part at the time of rotation by 90 degrees. FIG. 4 is a rear view of the main part at the time of rotation by 180 degrees. FIG. 5 is a rear view of the main part at the time of 45-degree rotation.

In FIG. 2, the upper bidirectional rotating fan 11 is operated by the output of the angle detector 13 and the output of the arithmetic unit 14 to discharge the internal air.
2 is stopped.

In FIG. 3, the upper bidirectional rotary fan 11 is stopped by the output of the angle detector 13 and the output of the arithmetic unit 14, and the side bidirectional rotary fan 12 is operated to discharge the internal air.

In FIG. 4, the upper bidirectional rotary fan 11 and the side bidirectional rotary fan 12 are operated by the output of the angle detector 13 and the output 14 of the arithmetic unit to discharge the internal air.

In FIG. 5, the upper bidirectional rotary fan 11 is operated by the output of the angle detector 13 and the output 14 of the arithmetic unit to draw in external air.
2 is stopped.

According to the display device having the above configuration, the upper bidirectional rotary fan 11 and the side bidirectional rotary fan 12 are provided at an arbitrary installation angle from a normal installation to a 360-degree rotation installation.
By controlling the direction and intensity of the natural convection of the air in the display device to obtain sufficient heat radiation at any installation angle from normal installation to 360-degree rotation installation, and minimize fan noise generation. Can be suppressed.

(Embodiment 4) A display device according to the first and sixth aspects of the present invention will be described below with reference to FIGS. 6, 2, 3, 4, and 5. .

In FIG. 6, the angle detector 13 and the temperature detector 16 are connected to a computing unit 14, and two outputs of the computing unit are connected to a fan speed control unit 15, and each output upper bidirectional rotating fan 11 And a side bidirectional rotating fan 12. FIG. 2 is a rear view of the main part at the time of normal installation. FIG. 3 is a rear view of the main part at the time of rotation by 90 degrees. FIG.
It is a principal part rear view at the time of 80-degree rotation. FIG. 5 is a rear view of the main part at the time of 45-degree rotation.

In FIG. 2, the upper bidirectional rotating fan 11 is operated to discharge the internal air by the output of the angle detector 13 and the arithmetic unit output 14, and the side bidirectional rotating fan 12 is stopped.

In FIG. 3, the upper bidirectional rotating fan 11 is stopped by the output of the angle detector 13 and the arithmetic unit output 14, and the side bidirectional rotating fan 12 is operated to discharge the internal air.

In FIG. 4, the upper bidirectional rotating fan 11 and the side bidirectional rotating fan 12 are operated by the output of the angle detector 13 and the output 14 of the calculator to discharge the internal air.

In FIG. 5, the upper bidirectional rotary fan 11 is operated by the output of the angle detector 13 and the arithmetic unit output 14 to draw in external air, and the side bidirectional rotary fan 12 is stopped.

According to the display device having the above-described configuration, the upper bidirectional rotary fan 11 and the side bidirectional rotary fan 12 are provided at any installation angle from a normal installation to a 360-degree rotation installation.
Is controlled by the direction and intensity that promotes natural convection of air in the display device, sufficient heat radiation can be obtained at any installation angle from normal installation to 360-degree rotation installation. Generation of fan noise can be minimized.

[0031]

As described above, according to the present invention,
Sufficient heat radiation can be obtained even when the display is rotated by 90 degrees around the display surface or installed upside down. Further, generation of fan noise according to rotation of the fan can be suppressed to a minimum.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a main part of a display device according to an embodiment of the present invention.

FIG. 2 is a rear view of a main part of the display device according to the embodiment of the present invention.

FIG. 3 is a rear view of a main part when the display device is rotated by 90 degrees in one embodiment of the present invention.

FIG. 4 is a main part rear view of the display device according to the embodiment of the present invention when it is rotated by 180 degrees.

FIG. 5 is a rear view of a main part when the display device is rotated by 45 degrees in one embodiment of the present invention.

FIG. 6 is a block diagram of a display device according to Embodiment 4 of the present invention.

FIG. 7 is a sectional view of a main part of a conventional display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 PDP 2 Drive circuit board 3 Flat cable 4 Ventilation hole 5 Exhaust fan 6 Front of casing 7 Rear of casing 8 Exhaust fan 9 Exhaust hole 10 Speaker 11 Upper fan 12 Side fan 13 Angle detector 14 Calculator 15 Fan rotation speed Control device 16 Temperature detector

Claims (8)

[Claims] 1. A display device characterized in that a heat radiator provided in the display device is operated optimally in accordance with an installation angle of the display device. 2. An apparatus comprising: an angle detector for detecting an installation angle of a display device; and a radiator for radiating heat generated from the display device, and optimizing an operation of the radiator by an output of the angle detector. A display device characterized by the above-mentioned. 3. The display device according to claim 2, wherein the display device is a plasma display panel, and the heat radiating device is a fan, and the optimum control is performed by one of operation and stop of the fan. 4. The display device according to claim 2, wherein the display device is a plasma display panel, and the heat radiating device is a fan, and the optimal control is performed by a calculation device and the number of rotations of the fan. 5. The display device according to claim 2, wherein the display device is a plasma display panel, and the heat radiating device is a two-way rotating fan, and is optimally controlled by controlling the rotation direction of the fan. 6. The display device further comprises a temperature detector and a calculator for calculating an output of the temperature detector and an output of the angle detector, and performing an optimal control of the heat radiating device based on an output of the calculator. The display device according to any one of claims 3 to 5, wherein the display device is a display device. 7. The display device according to claim 3, wherein the fan is optimally controlled in a direction and intensity for promoting natural convection of air in the display device. 8. An apparatus according to claim 3, wherein the angle detector is information about an installation angle in the storage device manually.
The display device according to item.