JPH0476994A - Cooling structure for electronic device - Google Patents

Abstract

PURPOSE:To sufficiently exhibit the capacity of a heat exchanger by providing a partition plate for distinguishing a suction route communicating with a heat radiator of the exchanger from a discharge route. CONSTITUTION:The atmosphere in a heat shielding hood 3 is forcibly fluidized by a discharge fan 8, and hot air is not enclosed in the hood 3. Further, since a partition plate 7 is provided, the hot air output from a heat radiator of one heat exchanger is not introduced to the radiator of other heat exchanger, thereby improving the operation of the exchanger.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a cooling structure for electronic equipment such as an industrial television (ITV).

[Prior Art] FIG. 7 is a schematic vertical sectional view of a conventional cooling structure, and FIG. 8 is a front view thereof. In the figure, (1) is a sealed case, (2
) is an electronic device such as a TTV housed in a sealed case (1), (3) is a heat shield hood that protects the sealed case (1) from radiant heat from the sun, etc., and (4) is a heat exchanger such as an electronic cooler. vessel,
(5) is a cooling fan that releases cold air from the heat exchanger (4), and (6) is a heat radiation fan that releases warm air from the heat exchanger (4).

The heat exchanger (4) has a heat exchange element (4a) as shown in FIG.
) with heat-absorbing fins (5C) on the heat-absorbing surface of the cooling fan (
5) releases cold air (4b) and also heat exchange element (4b).
The heat dissipation surface of a) has heat dissipation fins (6c) so that warm air (4c) is radiated by a heat dissipation fan (6).

Now, to explain the operation of the cooling structure shown in Fig. 7,
Electronic equipment (2) installed outdoors may exceed the allowable temperature depending on the outside temperature. For this reason, it is necessary to efficiently radiate heat from the electronic device (2), including the heat generated by the electronic device (2), and the surrounding heat using a heat exchanger.

Therefore, an electronic device (2) is housed in a sealed casing (1) shielded from solar heat by a heat shielding hood (3), and heat is radiated from the inside by a heat exchanger (4).

[Problems to be Solved by the Invention] Since the conventional cooling structure is configured as described above, warm air stagnates inside the heat shield hood (3) and one heat exchanger (4
The heat exchange efficiency was reduced because the heat radiation fan (6) of the adjacent heat exchanger (4) took in the warm air released by the heat radiation fan (6) of the heat exchanger (4). For this reason, there was a problem that the cooling effect was poor.

It is an object of the present invention to provide an effectively operating cooling structure that overcomes these problems.

[Means for Solving the Problems] The cooling structure according to the present invention has an air intake route through which air enters the heat radiating section of the heat exchanger and an air intake route from the heat radiating section to the outside of the wall of the sealed casing in which the heat exchanger is attached. A partition plate is provided to separate the exiting hot air from the exhaust route, and a fan is provided to discharge the warm air from the exhaust route from the heat shielding hood.

Further, in the cooling structure according to the present invention, a duct is provided between the fan that discharges warm air from the heat shielding hood and the warm air outlet of the heat shielding hood.

In addition, the heat exchanger is attached to the wall of the sealed casing via a heat insulating material, and a heat shielding material is provided around the main body of the heat exchanger on the inside of the wall of the sealed casing to which the heat exchanger is installed. ing.

[Effect 1: A partition plate is provided to separate the intake route and the exhaust route leading to the heat radiating part of the heat exchanger, so the warm air coming out of the heat exchanger does not enter the heat radiating part of the heat exchanger again, and the exhaust route A fan is installed to prevent warm air from stagnating in the heat shield hood, allowing the heat exchanger to fully demonstrate its ability.

In addition, since there is a distance between the warm air outlet of the heat shield hood and the fan, the fan will not malfunction due to rainwater, etc., and since there is a duct between them, the fan can effectively send warm air smoothly outside the heat shield hood. Exhale.

Furthermore, because there is insulation between the heat exchanger and the wall to which it is attached, there is less heat transfer between the heat exchanger and the wall, and because there is a heat shield on the inside of the wall. Embodiment C in which heat transfer is further reduced] The present invention will be specifically described with reference to the drawings. FIG. 1 is a vertical cross-sectional view of a first cooling structure according to the present invention viewed from the side, and FIG. 2 is a horizontal cross-sectional view thereof. In these figures, (1) to (6) are the same as the conventional ones, so their explanation will be omitted. (7) is the intake route (4d ) and an exhaust route (4e) going out from there. (8) is a discharge fan that discharges warm air from the exhaust hole h (4e) to the outside of the heat shielding hood.

In this way, the air inside the heat shielding hood is forced to flow by the discharge fan (8), and warm air does not stay inside the heat shielding hood.Furthermore, since the partition plate (7) is provided, one The warm air coming out of the heat radiating part of the heat exchanger does not enter the heat radiating part of other heat exchangers, improving the performance of the heat exchanger.

FIG. 3 is a longitudinal sectional view of the second cooling structure according to the present invention, viewed from the side, and FIG. 4 is a front view thereof. In these figures, (1) to (8) are the same as those in FIG. Note that Fig. 5 shows the conventional cooling structure shown in Fig. 7 in which a discharge fan (8) is simply provided inside the heat shield hood, and the warm air inside the heat shield hood is discharged outside by the discharge fan (8). However, there is a gap between this discharge fan (8) and the grill (8b) provided at the hot air outlet of the heat shield hood to prevent rain from entering, so that the air is discharged from the discharge fan. This has the opposite effect of stagnation of air and heat conduction into the housing. Therefore, in the present invention, as shown in FIG. 3, a duct (8a) is provided between the discharge fan (8) and the warm air discharge port.

In this way, the air discharged from the discharge fan (8) is smoothly discharged to the outside of the heat shielding hood, making it possible to suppress the rise in temperature of the electronic equipment.

FIG. 6 shows a second cooling structure according to the present invention.
FIG. The difference from the one in Figure 2 is that the heat exchanger (4) is attached to the wall of the sealed casing (1) via a heat insulator (9), and a partition wall (7) is provided. The heat shielding material (10) is provided around the heat exchanger on the inner surface of the wall of the sealed casing so as not to include the heat absorbing portion thereof.

In this way, the heat accumulated in the heat radiating fins (6C) of the heat exchanger (4) is prevented from being conducted into the sealed casing through the wall of the casing (1), and the heat accumulated in the heat radiating fins (6C) of the heat exchanger (4) is prevented from being conducted into the sealed casing. The heat shielding material ( 10) can be prevented.

[Effects of the Invention] As described above, according to the present invention, since there is a partition plate, warm air coming out of the heat radiating part of the heat exchanger does not enter the heat radiating part of the heat exchanger again, and there is also a discharge fan. Therefore, the warm air inside the heat shielding hood can be forcibly discharged to the outside of the hood, increasing heat exchange efficiency.

Furthermore, according to the present invention, since there is a duct in front of the discharge fan, the warm air inside the heat shielding hood smoothly flows out of the hood, eliminating the backflow of heat to the casing due to the warm air stagnating inside the hood. I can do it.

Furthermore, according to this invention, since there is a heat insulating material and a heat shielding material,
It is possible to prevent heat from flowing back into the casing through the wall of the sealed casing to which the heat exchanger is attached.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a cooling structure according to the invention, and FIG. 2 is a horizontal sectional view thereof. FIG. 3 is a longitudinal sectional view of another cooling structure according to the present invention;
The figure is a front view thereof, and FIG. 5 is a longitudinal sectional view of the cooling structure before reaching this cooling structure. FIG. 6 is a partial horizontal cross-sectional view of yet another cooling structure according to the invention. FIG. 7 is a schematic vertical sectional view of a conventional cooling structure, FIG. 8 is a front view thereof, and FIG. 9 is a diagram showing one row of heat exchangers. In the figure, (1) is a sealed case, (2) is an electronic device, (
3) is a heat shield hood, (4) is a heat exchanger, (5) is a cooling fan, (6) is a radiation fan, (7) is a partition plate, (8) is a discharge fan, (8a) is a duct, ( 9) is the insulation material, (1
0) is a heat shielding material. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] 1. Electronic devices are housed inside a sealed case, and a heat exchanger is installed on a part of the wall of the sealed case to dissipate the heat inside the case, and the sealed case is protected from sunlight, etc. A cooling structure for electronic equipment comprising a thermal barrier hood spaced apart from an outer wall of said closed enclosure, which includes an area provided with a heat exchanger for protection from radiant heat. A partition plate is provided to separate the heat radiation part into an intake route through which the atmosphere enters and an exhaust route through which the atmosphere exits therefrom, and a discharge fan is provided to discharge warm air from the exhaust route through the heat shield hood. A cooling structure for electronic equipment characterized by being provided within a heat shielding hood. 2. Electronic devices are housed inside a sealed case, and a heat exchanger is installed on a part of the wall of the sealed case to dissipate the heat inside the case, and the sealed case is protected from sunlight, etc. A cooling structure for electronic equipment comprising a thermal barrier hood spaced apart from an outer wall of said closed enclosure containing an area provided with a heat exchanger for protection from radiant heat, A cooling structure for electronic equipment, characterized in that a discharge fan is provided in a heat shielding hood so as to force the air to flow through the heat shielding hood, and a duct is provided between the discharge fan and a hot air outlet of the heat shielding hood. 3. Electronic devices are housed inside a sealed case, and a heat exchanger is installed on a part of the wall of the sealed case to dissipate the heat inside the case, and the sealed case is protected from sunlight, etc. A cooling structure for electronic equipment comprising a thermal barrier hood spaced apart from an outer wall of said closed enclosure, which includes an area provided with a heat exchanger for protection from radiant heat. A partition plate is provided to separate the heat radiating part of the heat exchanger into an intake route through which the atmosphere enters and an exhaust route through which the atmosphere exits therefrom, and the heat exchanger is attached to the wall of the sealed casing via a heat insulating material. and a heat shielding material is provided on the wall of the sealed casing opposite to the partition plate so as not to include a heat absorbing part around the heat exchanger inside the sealed casing. cooling structure.