JP2868485B2 - Radiator for electronic equipment housing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat radiating device for a communication electronic device housing in a communication base station or the like, and more particularly to a heat radiating device for an electronic device housing that can be installed outdoors in a communication base station.

[0002]

2. Description of the Related Art Conventionally, as this kind of heat radiator, there is a heat exchanger described in, for example, Japanese Patent Application Laid-Open No. 5-99578.
In this case, an internal air passage through which the internal air to be cooled flows and an external air passage through which the external air taken in for cooling the internal air flow are formed, and a plurality of cooling fans are installed. It is configured by providing a duct.

[0003] Another conventional example is disclosed in Japanese Patent Application Laid-Open No. 2-87.
In the case of the cooling device of the control device described in Japanese Patent No. 597,
A cooling device is provided separately from a control device that contains heat-generating electronic and electrical devices. In this cooling device, a cooling fan is used to forcibly circulate cooling air to a ventilation duct and a waste heat duct.

[0004]

Incidentally, in either of the former and the latter devices, a complicated cooling structure having a plurality of cooling fans, ducts, heat pipes and the like provided inside the housing is provided. As a result, the size of the entire apparatus is inevitably increased. Therefore, there is a problem that the cost is extremely high, and furthermore, maintenance and inspection require skill, and there is a disadvantage that the conditions for outdoor use are particularly limited.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a heat radiating device for an electronic device housing which is simplified in maintenance and inspection by reducing the number of members and making the structure compact, and which is small, lightweight and low-cost. It is in.

[0006]

According to the present invention, there is provided a heat radiating device for an electronic equipment housing, comprising: an outer housing having a closed structure ;
It is installed and has a single space between it and the inner surface of the outer casing.
That together form the air circulation path, a housing inner internal air return port is opened in communication with the air circulation path, the internal space
Via the gas return port, the air inside the inner casing with the heat generated from the electronic component housed in the interior of said housing, said
Circulating between the housing and the air circulation path, the internal air
Heat exchange and a line Cormorant heat exchanger is configured with an external air taken directly from the outer housing outside the.

[0007] In this case, the inner casing is connected via one side wall surface.
The Rukoto attached to the side wall inner surface of the outer casing, vertical and horizontal surfaces and mounting the opposing surface of the inner housing and the inner surface of the outer housing
The air circulation path is formed between them.

Further, when the outer casing has a front opening which is closed by a cover of a lid type, the inner casing is attached to the front opening with a side wall forming one surface. Has an opening for incorporating an electronic component.
After the attachment, the opening provided on the one side wall of the inner housing can be sealed by the cover of the outer housing.

On the other hand, the heat exchanger has an external air flow passage through which external air flows, and an internal air flow passage through which internal air taken in from the inner housing flows and returns to the inner housing again. . In this case, the external air flow path is provided facing the outside atmosphere from the outer housing, and the internal air flow path faces the inside of the inner housing and communicates with the air circulation path.

According to the present invention, preferably, the internal air return port of the inner casing is provided at a lower position in the vertical direction, and a blower fan is installed in the inner casing at a position near the lower end to forcibly circulate the internal air. Can be.

With the above arrangement, an air circulation path is formed in which the internal air with heat generated from the built-in electronic components is circulated and circulated through the heat exchanger only by assembling the inner and outer casings in a double manner. There is no need to form the conventional cooling air introduction duct or exhaust heat duct, the structure is simple, and there are almost no related members.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a heat radiating device for an electronic device housing according to the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, an outer housing 1 containing various electronic components such as a printed circuit board has side walls on three sides, and a front opening thereof is closed by a door lid type cover 2. It is of structural formula. Inside the outer housing 1, a cover 2 is opened from the front opening and an inner housing 10, which is called a small-sized normal shelf, is attached to form a double box structure of two large and small housings. The inner housing 10 is attached by fastening the mounting flanges 11 provided on both sides of the front opening of the inner housing 10 to the support brackets 3 provided on both sides of the front opening of the outer housing 1. Fixed.

FIG. 2 is a plan sectional view showing a state in which the inner casing 10 is assembled into a double box structure with the front openings thereof aligned in the outer casing 1. After the assembling of the inner and outer casings 1 and 10, a gap between the upper and lower sides of the inner casing 10 surrounded by the outer casing 1 and the four side walls or the five side walls is formed in the air circulation path A (FIG. (Shaded area in the middle). That is, through one side wall surface
To attach the inner housing 10 to the inner surface of the side wall of the outer housing 1
The upper, lower, left and right surfaces and the mounting opposing surfaces of the inner housing 10 and the outer housing
1, an air circulation path A consisting of a single space is formed.
Is done. Each of the three side walls 12 of the inner casing 10 communicating with the air circulation path A has rectangular internal air (FIG. 3).
A return port 13 indicated by a symbol B) indicated by a white arrow in the middle is open and provided.

On the other hand, in the outer housing 1, a mounting hole 5 is provided in the top plate portion 4 in the upper part in the top and bottom direction, and is provided.
From here, the heat exchanger 20 can be inserted and housed in the outer housing 1. Also in the inner casing 10, for example, a U-shaped notch 13 is formed in the top plate 12 at the upper part thereof, and the notch 13 is formed by the heat exchanger 20 inserted through the mounting hole 5 of the outer casing 1. Has a size that can be engaged.

The vertical cylindrical heat exchanger 20 has a fixing flange 22 at an intermediate portion of a main body 21 in the height direction. The fixing flange 22 is used to connect the heat exchanger 20 to the outer casing 1.
When assembling by inserting the mounting hole 5 into the notch 13 of the inner housing 10 and assembling the same, the position is regulated by being applied to the top plate 12 of the outer housing 1 and fixed with the bolt 23.

After assembling the upper part 21a of the heat exchanger 20 into the inner and outer casings 1 and 10, the upper part 21a is externally exposed on the top plate 4 of the outer casing 1 and is exposed to the outside air. For this reason, the upper portion 21a of the heat exchanger 20 is covered and protected by the box-shaped protective cover 24, and external air (the symbol C indicated by the black arrow in FIG. 3) is sucked in from the many vent holes 25 provided in the protective cover 24. And
And can be discharged. That is, an external air passage portion through which the external air C flows is formed in the upper portion 21a. On the other hand, the lower part 21b of the heat exchanger 20 is an internal air passage formed as a part for taking in the internal air B. Further, a radiation fin 26 is formed along a circumference surrounding the upper and lower portions 21a and 21b.

Next, the operation of the present embodiment having the above configuration will be described with reference to FIGS.

As shown in FIG. 2, by assembling the outer casing 1 and the inner casing 10, an air flow path A is formed between the five side walls between the two casings, and the heat exchanger 20 is incorporated. That is, the air circulation path A is formed outside the five sides of the inner housing 10 surrounded by the outer housing 1, and various electronic components including a circuit board and the like are stored in the inner housing 10.

As is clear from this, the inner and outer casings 1,
The air circulation path A is formed only by assembling the 10 in duplicate, and it is not necessary to separately form the conventional cooling air introduction duct and the exhaust heat duct. That is, the structure is extremely simple, and there are almost no related members.

As shown in FIG. 3, the internal air B whose temperature has risen with the heat generated from the electronic components and the like in the inner casing 10 is taken into the lower portion 21b of the heat exchanger 20 and flows through the internal air flow path. I do. At this time, the external air C is taken in from the upper part 21a of the heat exchanger 20 as cooling air for cooling and flows through the external air flow path. The internal air B, whose temperature has risen, exchanges heat with the cool external air C and is radiated. The internal air B after the heat radiation passes through the air circulation path A between the outer housing 1 and the air B, and is again introduced into the inner housing 10 from the return port 13 provided in the three-sided wall 12 of the inner housing 10. The internal air B is thus radiated through the heat exchanger 20 in this manner, and is again
Repeat the cycle back to.

In the meantime, in the heat exchanger 20, heat is exchanged between the external air C taken into the upper part 21a and the internal air B flowing through the lower part 21b, and then the circumferential radiating fins 26 on the upper part 21a side. Is released to the outside atmosphere, and so on. The intake and release of the external air C are performed through the ventilation holes 25 of the protective cover 24.

In this embodiment, a blower fan is installed inside the inner casing 10 if the interference with other parts is avoided and the installation space and cost are within the allowable range. It is also possible to forcibly circulate the air B. In addition, since the structure is extremely simple and airtightness is obtained, special maintenance and inspection by specialized techniques are not required, and there is no restriction on use conditions, so that it is suitable for outdoor use.

[0024]

As described above, in the heat radiating device for an electronic equipment housing according to the present invention, the inner housing 10 is connected to the inner housing 10 via one side wall surface.
It is attached to the inner surface of the side wall of the outer housing 1 and the inner and outer two housings are simply assembled in a double manner.
An air circulation path consisting of a space is formed, and it is not necessary to separately form a conventional cooling air introduction duct and a heat exhaust duct, the structure is extremely simple, and the number of parts is almost nil. As a result, maintenance and inspection are extremely easy and require no skill,
Small size and light weight and low cost can be realized.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a heat radiating device for an electronic device housing according to an embodiment of the present invention.

FIG. 2 is a plan assembly sectional view of the present embodiment.

FIG. 3 is a perspective view schematically showing the flow of external air and internal air in the inner housing of the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer housing 2 Cover of lid type 3 Bracket for mounting inner housing 5 Mounting hole for heat exchanger 10 Inner housing 11 Flange for mounting 12 Three side walls 13 Internal air return port 15 Notch for mounting heat exchanger Part 20 Heat exchanger 21a Upper external air flow path part 21b Lower internal air flow path part 24 Protective cover 25 Vent hole 26 Radiation fin

Claims (6)

(57) [Claims] An outer housing having a sealed structure and an inner surface of the outer housing installed inside the outer housing.
An air circulation path consisting of a single space is formed between
Serial and housing inner internal air return port is opened in communication with the air circulation path, through the inner air return opening, accommodated in the said housing
Has been the air inside the inner casing with the heat generated from the electronic component, it is circulated between the air circulation passage and the inner housing, prior to
Serial heat dissipation device of an electronic apparatus housing, characterized in that it comprises a heat exchange line cormorants heat exchanger with an external air taken directly from the outer housing outside the interior air. 2. The outer housing is connected to the inner housing via one side wall.
The Rukoto attached to the inner surface of the side wall, top and bottom of the inner housing
The heat radiating device for an electronic device housing according to claim 1 , wherein the air circulation path is formed between the left and right surfaces and the mounting opposing surface and the inner surface of the outer housing . 3. The outer casing has a front opening which is closed by a cover of a lid type, and the inner casing is attached to the front opening with a side wall forming one surface, and is attached to the side wall. Is provided with an opening for incorporating the electronic component, and the opening provided on the one side wall of the inner housing is sealed by the cover of the outer housing after mounting. The heat radiating device for an electronic device housing according to claim 2. 4. The heat exchanger has an external air flow passage through which the external air flows, and flows the internal air taken in from the internal housing and returns the internal air to the internal housing again. The heat radiating device for an electronic device housing according to claim 1, further comprising a road portion. 5. The external air passage portion is provided facing the outside atmosphere from the outer housing, and the internal air passage portion faces the inside of the inner housing and communicates with the air circulation path. The heat radiating device for an electronic device housing according to claim 4, wherein: 6. The internal air return port of the inner casing is provided at a lower position in the vertical direction, and a blower fan is installed in the inner casing at a position near the lower part. 5
A heat radiating device for an electronic device housing according to any one of the above.