JPH04288585A - Cooling device for display unit - Google Patents

Abstract

PURPOSE:To prevent the display unit from corroding and to prolong the life of the display unit even if an outdoor atmosphere is inferior by providing dust protective filter in the air passage of a box body on the entrance side of a blow-in fan and the exit side of a blowout fan. CONSTITUTION:Clean cooling air is taken in the box body 1 through the dust protective filters 10 provided in the air passage 5 of the box body 1 on the entrance side of the suction fan 4 and exit side of the blowout fan 3 to cool the internal equipment. A heat exchange between the inside and outside of the box body 1 is made by a heating pipe which closes the entrance and exit of the air passage 5 and has one side projected in the box body 1 and the other end projected outside to cool the internal equipment. Further, the entrance of the air passage 5 of the box body 1 is closed, the filter 10 or a unidirectional air sending louver 12 is provided at the exit, and a forcible fan 17 is provided nearby the entrance of the air passage 5 to cool the inside of the box body 1 with invariably clean air. Thus, the display unit 2 is prevented from corroding and its life can be prolonged.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for a display installed outdoors, for example, in a poor atmosphere.

0002

[Prior Art] Figs. 10 and 11 show, for example, Utility Model Application No. 61-2
06991 is a diagram showing a conventional display cooling device, and in the figure, 1 is a box body, and 2 is this box body 1.
3 is a blowout fan that cools the display 2; 4 is a suction fan that cools the display 2;
5 is a ventilation path formed in the box 1; 6 is a display panel;
7 is a diffuser-transmitting plate provided on the back side of this display panel 6;
Reference numeral 8 is a case of the display device 2, and reference numeral 9 is a light emitting body serving as a light source, such as a fluorescent lamp.

Next, the operation will be explained. A conventional display cooling device is constructed as described above, and the outside air is introduced in the direction of arrow A by the blowing fan 3, suction fan 4, and ventilation path 5 provided in the box 1, and the air is drawn from below to above. By creating a flow of cooling air and blowing it out of the box body 1 in the direction of arrow B, the heat generated by the fluorescent lamps, which are the regularly arranged light emitting bodies 9, is absorbed by the cooling air passing through the cooling air passage 5. It was carried away and each display 2 was cooled.

0004

[Problem to be Solved by the Invention] Since the conventional display cooling device is constructed as described above, if it is installed outdoors in a bad atmosphere, for example, the display may be corroded by the cooling air. Therefore, some kind of protection is required, and there are also problems such as shortening the life of the display device.

[0005] This invention was made to solve the above problems, and even if the outdoor atmosphere is bad,
It is an object of the present invention to provide a cooling device for a display device that can prevent corrosion of the display device and extend the life of the display device.

[0006]

[Means for Solving the Problems] A display cooling device according to the present invention is provided with dustproof filters on the inlet side of the blowing fan and on the outlet side of the blowing fan in the ventilation passage of the box.

Further, in the ventilation passage of the box, a dustproof filter is installed only on the inlet side of the blowing fan, and a unidirectional ventilation louver is installed on the outlet side of the blowing fan.

[0008] Next, the inlet and outlet of the ventilation passage are closed with a closing plate, and a heat pipe is provided on the back surface of the box, with one side protruding inside the box and the other side protruding outside.

[0009] Furthermore, cooling fins are provided on the portions of the heat pipes that protrude to the outside.

Furthermore, the suction port of the ventilation path is closed with a blocking plate, a forced fan having a discharge port at a predetermined position near the suction port of the ventilation path is attached to the box body, and a dustproof filter is installed on the exit side of the ventilation path. will be established.

[0011] As mentioned above, the suction port of the ventilation path is closed with a closing plate, and a forced fan having a discharge port at a predetermined position near the suction port of the ventilation path is attached to the box body. , provide louvers for one-way ventilation.

Furthermore, in addition to the above, a temperature sensor is provided near the louver for one-way ventilation on the exit side of the ventilation path.

[0013]

[Operation] The display cooling device according to the present invention allows clean cooling air to be taken into the inside of the box by dust-proof filters provided on the inlet side of the suction fan and the outlet side of the blowout fan in the ventilation path of the box. and cools the internal equipment.

[0014] In addition, the heat pipe which closes the inlet and outlet of the ventilation passage and has one side protruding inside the box and the other side protruding outside allows heat exchange between the inside and outside of the box and cools the equipment inside.

Furthermore, the entrance of the ventilation passage of the box body is blocked,
A dust filter or a louver for one-way ventilation is provided at the outlet, and a forced fan is provided near the entrance of the ventilation path, so that the inside of the box is always cooled with clean air.

[0016]

[Example] Example 1. FIG. 1 is a sectional view showing one embodiment of the present invention, and 1 to 5 are completely the same as the conventional device described above. 10 is a dustproof filter attached to the ventilation passage 5 of the box body 1, and the suction side is in front of the suction fan 4.
The blowing side is installed behind the blowing fan 3.

FIG. 2 is a partially enlarged view of the box body 1 to which the dustproof filter 10 of FIG. .

In the display cooling device constructed as described above, the dustproof filter 10 installed at the entrance of the ventilation passage 5 cleans the outdoor cooling air with a bad atmosphere through the filter section and cools it into the box body 1. On the other hand, a dustproof filter 10 is attached to the outside of the blow-off fan 3 at the outlet of the ventilation path 5, so that outside air does not directly flow in.

Further, when the dustproof filter 10 becomes clogged, its function deteriorates, so the tightening member 11 is loosened and removed from the ventilation passage 5 of the box body 1, and the filter is cleaned.

Example 2. In the first embodiment, the dust filter 10 is attached to the entrance and exit of the ventilation passage 5 to purify the air inside the box, but in this embodiment, as shown in FIGS. A dustproof filter 10 is installed in front of the suction fan 4, and a louver 12 for one-way ventilation is installed behind the blowout fan 3 in the ventilation path 5. In FIGS. 3 and 4, clean air enters the box body 1 from a dustproof filter 10 provided in front of the ventilation path 5, and exhaust air is caused by the pressure of the blowing fan 3.
The one-way ventilation is discharged as shown in FIG. 4(A) of the louver 12. Also, when the equipment is stopped, the suction fan 4
, the blow-off fan 3 is also stopped, and at that time, as shown in Fig. 4 (
As shown in B), the one-way ventilation louver 12 is closed to prevent outside air with a bad atmosphere from flowing in.

Example 3. In FIG. 5, the inlet and outlet of the ventilation passage 5 of the box body 1 are closed with a closing plate 13, and the heat pipe 14, which protrudes into the box body 1 on one side and protrudes outside the box body 1 on the other side, is supported by a support member 15. This figure shows another embodiment in which it is attached to the body 1. According to FIG. 5, heat exchange between inside and outside air can be performed without introducing outside air into the ventilation path as shown in FIG.

Example 4. FIG. 6 shows yet another embodiment in which the heat pipe 14 is attached to the box body 1, in which cooling fins 16 are attached to the portion of the heat pipe 14 that protrudes outside the box body 1. According to FIG. 6, the cooling fins 16 increase the heat exchange area with the outside air, thereby further increasing the cooling effect.

Example 5. In the embodiment shown in FIG. 7, the inlet of the ventilation passage 5 is closed with a closing plate 13, the dust filter 10 is attached to the outlet, and the forced fan 17 is attached to the box 1 near the inlet. According to this embodiment, a forced fan 17 having a dustproof filter (not shown) forcibly forces outside air into the ventilation passage, cools the inside of the box 1, and discharges the air from the dustproof filter 10.

Example 6. FIG. 8 shows an example in which a one-way ventilation louver 12 is attached in place of the dustproof filter 10 at the outlet of the fifth embodiment. By doing this, when the forced fan 17 is stopped, the one-way ventilation louver 12 completely shuts out the outside air, as shown in FIG. The air inside the body 1 is purified. (Dust-proof filters may allow some outside air to penetrate.)

Example 7. FIG. 9 shows a configuration in which a temperature sensor 18 is attached near the outlet of the ventilation passage 5 in addition to the configuration of the sixth embodiment. Even if this is cooled by the forced fan 17,
It detects when the temperature near the outlet exceeds a predetermined temperature, and issues an alarm or trips to prevent equipment burnout.

By the way, in the above description of the seventh embodiment, the one-way ventilation louver 12 is attached to the outlet of the ventilation passage 5, but the one-way ventilation louver may be a dustproof filter.

[0027]

[Effects of the Invention] Since the present invention is constructed as described above, it produces the following effects.

[0028] By attaching a dustproof filter to the entrance and exit of the ventilation passage of the box, the cooling air can be purified even if it is installed in a place with a poor atmosphere.

By installing a dustproof filter at the entrance of the ventilation path of the box body and a one-way ventilation louver at the exit of the ventilation path, it is possible to cool the equipment with clean air while it is operating, and it is possible to stop the equipment. A one-way ventilation louver inside allows you to shut out outside air.

[0030] Cooling air can be passed through the ventilation passage by blocking the entrance and exit of the ventilation passage of the box body with a closing plate and providing a heat pipe with one side protruding inside the box body and the other side protruding outside the box body. heat exchange between the inside and outside of the box.

[0031] By attaching cooling fins to the portion of the heat pipe that protrudes to the outside of the box, the heat exchange area with the outside air is increased, and the cooling effect inside the box is further improved.

[0032] By blocking the entrance of the ventilation passage of the box body with a blocking plate, installing a dustproof filter at the exit of the ventilation passage, and installing a forced fan near the entrance of the ventilation passage, clean air is forced into the inside of the box body. can be cooled down.

[0033] By blocking the entrance of the ventilation passage of the box body with a blocking plate, installing a one-way ventilation louver at the exit of the ventilation passage, and installing a forced fan near the entrance of the ventilation passage, clean air is kept inside the box body. In addition to forcibly cooling the box, it is also possible to shut out outside air from entering the box even when the equipment is stopped.

In addition to the above configuration, by installing a temperature sensor near the outlet of the ventilation path, it is possible to detect when the temperature inside the box has risen to a predetermined temperature or higher.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional side view showing Embodiment 1 of the present invention.

FIG. 2 is an enlarged cross-sectional view of the entrance and exit portion of the ventilation passage showing Embodiment 1 of the present invention.

FIG. 3 is a cross-sectional side view showing a second embodiment of the present invention.

FIG. 4 is an enlarged view of a one-way ventilation louver attached to the ventilation passage outlet section showing a second embodiment of the present invention.

FIG. 5 is a cross-sectional side view showing a third embodiment of the present invention.

FIG. 6 is a cross-sectional side view showing a fourth embodiment of the present invention.

FIG. 7 is a cross-sectional side view showing Example 5 of the present invention.

FIG. 8 is a cross-sectional side view showing a sixth embodiment of the present invention.

FIG. 9 is a cross-sectional side view showing Example 7 of the present invention.

FIG. 10 is a cross-sectional side view showing a conventional display cooling device.

FIG. 11 is an enlarged view of a display of a conventional display cooling device.

[Explanation of symbols]

1 Box body 2 Display unit 5. Ventilation duct 9. Luminous body 10 Dustproof filter 12 One-way ventilation louver 13 Closing board 14 Heat pipe 16 Cooling fins 17 Forced fan 18 Temperature sensor

Claims (7)

[Claims] [Claim 1] A box, a display mounted inside the box, a light emitter disposed inside the display, and ventilation provided inside the box to reduce heat generated from the light emitter. A cooling device for a display device, comprising: a ventilation passage; an entrance of the ventilation passage to the box; and a dustproof filter provided at an exit from the box. 2. Claim 1, characterized in that a dustproof filter is provided at the entrance of the ventilation path to the box, and a louver for one-way ventilation is installed at the exit of the ventilation path from the box. Cooling device for the indicated display. [Claim 3] A box, a display mounted inside the box, a light emitting body disposed within the display, and a light emitting body disposed inside the box to reduce heat generated from the light emitting body. A display cooling device comprising a ventilation passage, a closing plate provided at an inlet and an outlet of the ventilation passage, and a heat pipe whose one side projects inside the box body and the other side projects outside the box body. 4. The display cooling device according to claim 3, wherein a cooling fin is attached to a portion of the heat pipe that projects outside. 5. A box, a display mounted inside the box, a light emitter disposed inside the display, and ventilation provided inside the box to reduce heat generated from the light emitter. a closing plate provided at the suction port of the ventilation path, a forced fan attached to the box body and having a discharge port near the suction port of the ventilation path of the box body, and a closing plate provided at the outlet side of the ventilation path. A display cooling device equipped with a dustproof filter. [Claim 6] The suction port of the ventilation path is closed with a blocking plate, a forced fan having a discharge port at a predetermined position near the suction port of the ventilation path is attached to the box body, and a louver for one-way ventilation is installed on the exit side of the ventilation path. 6. The display cooling device according to claim 5, further comprising: a cooling device for a display device according to claim 5; 7. The display cooling device according to claim 6, wherein a temperature sensor is installed near the one-way ventilation louver installed on the exit side of the ventilation path.