JPH06125517A - Video display device - Google Patents

Abstract

PURPOSE:To prevent the function lowering of a video display device by surely preventing the rise of the temperatures in the video source, semiconductor and electronic circuit, etc., of the video display device. CONSTITUTION:A tubular radiator 14a is installed inside a video display device 1a, a screen 3 is installed on the front side of a body 2a which is nearly rectangular from a side view, a mirror 4 is on the right side, and a lens 5, a cooling unit 6a, a CRT 7 and a semiconductor 8 are arranged inside. The cooling unit 6a is provided successively with a tubular radiator 14a via a heat conductor 15 and a semiconductor 8 is arranged in contact with the tubular radiator 14. The heat generated in the CRT 7 is transmitted to the tubular radiator 14a via the cooling unit 6a and the heat conductor 15, and the heat from the semiconductor 8 is directly transmitted to the tubular radiator 14a and it is radiated within the tubular radiator 14a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device, and more particularly to an image display device having an improved heat dissipation structure.

[0002]

2. Description of the Related Art In recent years, due to the development of information transmission processing technology, high-luminance and high-definition images can be obtained by a large-screen image display device such as a high-definition system or a high-brightness television system, which greatly contributes to information transmission. Is starting to appear.

In such an image display device, the precision technology and the compact technology, which have been integrated so far, are fully utilized, but on the other hand, new obstacles are also occurring.

That is, in this video display device,
Since various electronic devices and optical mechanisms are installed in a predetermined housing in a dense state, a gas flow space is small and heat is easily accumulated. For example, in a CRT projection type image display device,
There is a risk that the CRT, the semiconductor, and the like may deteriorate in function due to a rise in temperature, and the optical mechanism parts such as the lens and the mirror may be distorted due to a rise in temperature and the image quality may deteriorate. Therefore, various cooling devices have been developed and introduced to deal with this.

FIG. 4 is a sectional view showing an example of a conventional image display device. In the image display device 1c of this example, a screen 3 is provided on the front side (left side in the figure) of the housing 2c, a mirror 4 is provided on the right side, and a lens 5 and a cooling unit 6 are provided inside.
b, a CRT 7, and a semiconductor 8 are arranged, the cooling liquid 6 is filled in the cooling unit 6b, and an external heat radiator 10 is installed outside the housing 2c.
It prevents the temperature from rising. Further, the ventilation fan 12 provided at the exhaust port 11 of the housing 2c is rotated to suck the outside air from the intake port 13 and circulate in the housing 2c to exhaust the exhaust port 11
After that, the temperature rise of the optical mechanism part and the electronic circuit is prevented by forced air cooling to prevent the function from deteriorating.

[0006]

In this conventional image display device, the temperature inside the housing is prevented from rising by the cooling by the cooling unit and the forced air cooling by the ventilation fan to maintain the initial function. In the present situation that the housing has become more compact due to improvements, and the electronic circuit has been expanded by the addition of functions to increase the dense state inside the housing and the gas flow space has decreased, not only a sufficient cooling effect cannot be obtained. However, there was a problem that the noise of the ventilation fan for forced air cooling was large.

[0007]

The image display device of the present invention is characterized in that a cylindrical heat radiator is installed in the housing, and the radiator has a heat radiator through which outside air is ventilated.

A heat conductor may be provided to connect the tubular radiator and the heat source component, or the tubular radiator may have a bay-bent shape in the longitudinal direction, and the bay-bent portion and the You may connect directly with the heat-generating component.

Further, the heat radiating means in the cylindrical radiator may be a ventilation fan provided in the cylindrical radiator, and further, heat radiation fins may be provided in the cylindrical radiator.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. 1A is a perspective view showing a first embodiment of an image display device of the present invention, FIG. 1B is a sectional view of FIG. 1A, and FIG. 2 is a second embodiment of the image display device of the present invention. FIG. 3 is a sectional view showing an example, and FIG. 3 is a partial sectional view showing an example of a cylindrical radiator in the first and second embodiments.

The image display apparatus 1 of the first embodiment shown in FIG.
A cylindrical radiator 14a is installed inside a, and a screen 3 is provided on the front side (left side in FIG. 1B) of the substantially rectangular housing 2a in a side view, a mirror 4 is provided on the right side, and an inside is provided. Is lens 5, cooling unit 6a, CRT 7, semiconductor 8
Is provided. Further, the cooling unit 6a is the heat conductor 1
5, the semiconductor 8 is connected to the cylindrical heat radiator 14 a, and the semiconductor 8 is disposed in contact with the cylindrical heat radiator 14.

Therefore, the heat generated in the CRT 7 is transferred to the cylindrical heat radiator 14a via the cooling unit 6a and the heat conductor 15, and the heat from the semiconductor 8 is directly transferred to the cylindrical heat radiator 14a, so that the cylindrical heat radiation is performed. Heat is dissipated into the body 14a.

Next, in the second embodiment shown in FIG. 2, the cylindrical radiator 14b has a shape which is bent in the longitudinal direction, and the cooling unit 6a is disposed in contact with this bent portion. Therefore, the heat conductor 15 in the first embodiment is unnecessary, and the heat from the CRT 7 can be efficiently transferred to the cylindrical radiator 14b.

Further, as shown in FIG. 3, the cylindrical radiator 1
It is possible to install a ventilation fan 16 or a radiation fin 17 in the inside of the unit 4 to enhance the heat radiation effect to the outside air. Further, the ventilation fan 16 and the radiation fins 17 may be installed not only inside the tubular radiator 14 but also in the vicinity thereof.

The present invention is not limited to the above embodiment. For example, the cylindrical heat radiator may be branched as well as bay-curved, and may be painted black to enhance the heat radiation effect.

[0016]

As described above, according to the present invention, the cylindrical heat radiator is installed in the housing of the image display device, and the heat from the heat source component efficiently transmitted to the cylindrical heat radiator is transferred into the cylindrical heat radiator. Since the heat is radiated to the outside air, there is an effect that the temperature rise of the image source, the optical mechanism section, the semiconductor, the electronic circuit, etc. is prevented and the functional deterioration is prevented.

[Brief description of drawings]

1A is a perspective view showing a first embodiment of an image display device of the present invention, and FIG. 1B is a sectional view in FIG. 1A.

FIG. 2 is a sectional view showing a second embodiment of the image display device of the present invention.

FIG. 3 is a partial cross-sectional view showing an example of a tubular radiator in the first and second embodiments.

FIG. 4 is a cross-sectional view showing an example of a conventional image display device.

[Explanation of symbols]

 1a, 1b, 1c Video display device 2a, 2b, 2c Housing 3 Screen 4 Mirror 5 Lens 6a, 6b Cooling unit 7 CRT 8 Semiconductor 9 Coolant 10 External radiator 11 Exhaust vent 12 and 16 Ventilation fan 13 Intake port 14 and 14a , 14b Cylindrical radiator 15 Heat conductor 17 Radiating fin

Claims (5)

[Claims] 1. An image display device, comprising: a cylindrical heat dissipating member installed in a housing; and a heat dissipating means for allowing outside air to pass through the cylindrical heat dissipating member. 2. The image display device according to claim 1, further comprising a heat conductor connecting the cylindrical heat radiator and the heat source component. 3. The image display device according to claim 1, wherein the cylindrical heat radiator has a bay-bent shape in the longitudinal direction, and the bay-bent portion and the heat source component are directly connected to each other. 4. The image display device according to claim 1, wherein the heat radiating means in the tubular radiator is a ventilation fan provided in the tubular radiator. 5. The image display device according to claim 1, further comprising a radiation fin inside the cylindrical radiator.