JPH03175479A - Image display device - Google Patents

Abstract

PURPOSE:To cool a light emitter without sucking outdoor air by exchanging the heat of the indoor and outdoor air in a housing with the aid of a heat pipe and cooling the inside of a display device. CONSTITUTION:A cooler box 5 is provided to the prescribed position of the housing 2, and the heat pipe 7 whose one side projects in the box 5 and whose other side projects to the outside of the housing 2 is provided near the box 5. Besides, cooling fins 9 are disposed to the other side of the pipes 7 which project to the outside of the housing 2 and a fan 6 is provided to a pedestal in the box 5 at the same time. Therefore, when the indoor air heated by the light emitter enters the box 5 in such a way shown by an arrow X, it is cooled by performing heat-exchange to the outdoor air with the aid of the pipes 7. The cooled indoor air is pushed out from the box 5 by the fan 6 in such a way shown by an arrow Y. Then, it cools the light emitter and circulates. Thus, the light emitter is cooled without sucking the outdoor air.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement of an image display device incorporating an air conditioner.

[Conventional technology]

FIG. 2 is a diagram showing a conventional image display device disclosed in, for example, Japanese Utility Model Application Publication No. 59-184172. The casing constitutes the main body of the display i, and (2A) in the figure shows the rear side. Although the front structure is not shown, a display section consisting of a large number of electron tubes arranged in a matrix is attached. (3 rivers! A part of the rear surface is made into a mesh shape for the intake and exhaust air, which will be described later.) (4) is an air conditioner installed inside the bacterial body to cool the display section, and is installed inside the main body (4A). It has a compressor (4B), an evaporator (4C) and a condenser (4D).

In addition, (4E) is the outside air intake port of the air conditioner, and (4F) is the exhaust port of the outside air that has exchanged heat with the condenser to the outside. It is provided. The intake port and the exhaust port may be provided facing the side surface of the housing (2).

In addition, (4G) is the inside air intake port that sucks the air inside the housing, and the air that has been cooled by exchanging heat with the evaporator (4C) is discharged back into the hospital from the inside air exhaust port (4H) and the display section is displayed. Perform cooling.

The image display device is equipped with a display section consisting of a large number of electron tubes arranged in a matrix on the front of a main body housing, and by controlling the blinking or brightness of the electron tubes, characters or figures can be displayed on the display section. It is designed to display
There are usually hundreds of electric light tubes that make up the display section, and they generate a lot of heat.In some cases, an air conditioner is installed inside the tower as a means of cooling the tubes.

[Problem to be solved by the invention]

When operating the conventional air conditioner (4), which is constructed as described above, relatively high temperature air (arrow A) is discharged from the condenser exhaust port (4F) as shown in Figure 1. Then, as shown by the dotted arrow B, an intake/exhaust short circuit phenomenon occurs in which the outside air is sucked in from the outside air intake port (4E) again, so there is a possibility that the cooling efficiency will be extremely poor. In addition, the outside air that is drawn in becomes hot due to the influence of direct sunlight, which also causes a deterioration in cooling efficiency.

Furthermore, when installing in a desert area or other dusty location, sand and dust may enter the equipment through the outside air intake (4E) and exhaust port (4F) not only when the air conditioner is in operation but also when it is not operating. There was a risk of damage.

This invention was made to solve the above-mentioned problems. It not only allows cooling without drawing in outside air, but also eliminates the need for a compressor, evaporator, and condenser. The purpose is to obtain.

[T method to solve problems]

The image display device according to the present invention includes a cooler box provided at a predetermined position of a box body, one side protruding into the cooler box,
If a heat pipe with the other side protruding outside the box body is installed near the cooler box, cooling fins will be placed on the heat pipe on the other side that protrudes outside the box body. It has been established.

[For production]

In the 111 il image display device according to the present invention, heat is exchanged between the inside and outside of the box by the heat pipe, thereby cooling the inside of the display device.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, <5) is a cooler box installed at the bottom of the back of the flute (2), into which hot air that has cooled the light emitter (not shown) enters as shown by the arrow (X), and cold air enters as shown by the arrow (X). Place (Y
) are provided with cutouts (5X) (5Y) that allow them to protrude. (6) i, the air blower installed on the base (1) at the bottom of the cooler, indicated by the arrow (
The wind coming in as shown in X) is blown out as shown in arrow (7). (7) is a heat pipe whose negative side protrudes into the cooler box (5) and whose other side protrudes outside the box body (2);
(8) is the bushing that attaches this heat pipe to the box (2), (9) is the box (2) of the heat pipe (7).
The cooling fins are attached to the externally protruding parts of the cooling fins.

Note that the other configurations are the same as those of the prior art, so explanations will be omitted.

Next, the effect will be explained. Inside air heated by the light emitter (4°) enters the cooler box (5) as shown between the arrows and is cooled by exchanging heat with outside air through the heat pipe (7). This cooled internal air is transferred to the cooler box (5) by the blower (6) as shown by the arrow N).
) to cool and circulate the light emitter (not shown).

〔Effect of the invention〕

As described above, according to the present invention, a heat pipe is provided at the bottom of the back of the box body, protrudes into the cooler box on one side, projects outside the box body on the other side, and has cooling fins attached thereto. Since the blower is configured to be mounted on the base at the bottom of the cooler box, the device can be made at low cost and is
This prevents sand and dust from entering the box.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view showing an image display device according to an embodiment of the present invention, and FIG. 2 is a partial sectional view showing a conventional image display device. In the figure, (2) is the box body, and (2A) is the rear surface (5
) is the cooler box, (6) is the blower, (7) is the heat pump, and (9) is the cooling fin. In addition, in the figure. The same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] In an image display device, a display section formed by arranging a large number of electron tubes in a matrix is disposed on the front surface of a box, and a cooling means for cooling the display section is provided on the rear or side surface of the box, A cooler box is provided on the rear or side surface of the box, and a heat pipe is provided inside the cooler box with one side protruding and the other side protruding outside the box. An image display device comprising a cooling fin attached to a portion projecting to the outside, and a blower provided near the bottom of the heat pipe of the cooler box.