JP2007234922A - Electronic device storage box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a field-mounted electronic device storage box formed as a structure that improves a cooling capacity for a heating unit. <P>SOLUTION: The electronic device storage box is the field-mounted electronic device storage box having a storage 6 storing an electronic device therein. The electronic device storage box has a ceiling board 3 that leads an exhaust gas from the electronic device to the outside, and the exhaust gas is discharged from an inner exhaust outlet 2 formed on the top of the storage 6. To lead the exhaust gas from the electronic device to the outside, the ceiling board 3 is fixed via a plurality of ceiling board mounting poles 4 attached at any desired positions on the top of the storage 6, and is formed into a gap-containing structure that retains an exhaust gap 5 through which the exhaust gas escapes to the outside from the entire periphery of the ceiling board 3. The ceiling board 3 having such a structure is placed on the top of the storage 6 to enable cooling of the electronic device. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a structure of a cooling device, and more particularly to an outdoor device-type electronic device storage box.

Electronic equipment for outdoor installations such as radio base station equipment and repeaters in mobile communication systems such as mobile phone systems are protected to maintain both exhaust characteristics for heat dissipation and rainproof characteristics against rainwater intrusion. An electronic device storage box having an electronic device storage portion has been used.
Conventionally, there has been an electronic device storage box having a structure as shown in the perspective view of FIG.
A conventional outdoor installation type electronic device storage box for storing an electronic device used outdoors is a storage box body 1 having an internal exhaust port 2 for releasing heat generated by the electronic device by exhaust, and the storage box body. For attaching two ceiling plates attached to the upper surface of the storage box body 1 in parallel to the two sides of the upper surface of the storage box body 1 with the clearances 5a and 5b for exhaust to guide the exhaust air to the outside. The ceiling board 3 fixed by the angle 8 is provided.
Although not shown in the drawing, the electronic device having a heat generating unit such as a transmission unit and a power source and a cooling fan is housed in the housing portion 6 provided in the outdoor-installed electronic device housing box.
The outside air forcedly sucked from the bottom surface of the storage box body 1 by the cooling fan of the electronic device cools the heat generating unit of the electronic device, and the air flow heated there passes through the internal exhaust port 2 on the top surface of the storage box body 1. The air is exhausted mainly from the exhaust gaps 5a and 5b for exhausting on the two sides of the ceiling plate 3.
At this time, a U-shaped angle fitting is used for the ceiling plate mounting angle 8 and a hole for airflow is formed in the U-shaped angle 8, but the airflow that strikes the angle is a vortex or the like. A phenomenon occurs in which the exhaust passage is blocked due to the occurrence.
Accordingly, the exhaust to the outside is in the other two directions (exhaust a, exhaust b) parallel to the angle 8 of the U-shape, and there is a limit to the heat dissipation effect.
A decrease in the exhaust capacity of the containment box was observed for electronic devices that are becoming increasingly amplified, smaller, and higher in density.

  There was a thing that improved ventilation and improved the heat dissipation effect, eliminated the drop of water droplets on electronic devices due to condensation and rainwater entrapment, and miniaturized. (For example, refer to Patent Document 1).

Japanese Patent Laid-Open No. 11-11534 (FIG. 1)

As a radio base station facility in a mobile communication system such as a cellular phone system, an outdoor installation type storage box that stores electronic equipment such as a repeater is required to have both rainproof and heat dissipation characteristics.
In recent years, as seen in common amplifiers among these electronic devices such as repeaters, wideband, high amplification, miniaturization, and high-density mounting have progressed, and accordingly heat generation per unit volume from heat generation units such as transmission and power supply units There has been a demand for a housing box having a structure having heat dissipation characteristics corresponding to this.

  An object of the present invention is to solve the above-described problems of the prior art and to provide an outdoor-installed electronic device storage box formed with a structure that improves the cooling capacity of the heat generating unit.

In order to achieve this object, the electronic device storage box of the present invention is an outdoor installation type electronic device storage box provided with a storage portion for storing the electronic device,
The electronic device storage box includes a ceiling plate that guides the exhaust from the electronic device exhausted from an internal exhaust port at the top of the storage part to the outside.
In order to guide the exhaust from the electronic device to the outside, the ceiling panel is fixed via a plurality of ceiling panel mounting columns mounted at arbitrary positions on the upper part of the housing portion, It is formed in a gap structure that keeps an exhaust gap that is exhausted from the surroundings to the outside, and is arranged on the upper part of the accommodating portion,
The electronic device is configured to be cooled.

  By carrying out the present invention, a predetermined amount of heat generated from a heat generating unit such as a transmission unit and a power supply unit, which is advanced in wideband, high amplification and miniaturization as seen in a common amplifier among electronic devices installed outdoors such as a repeater, can be obtained. Exhaust heat can be dissipated to the outside, and the heat generating unit can be cooled by a low-cost electronic device housing box.

FIG. 1 is a perspective view of an electronic equipment housing box of the outdoor installation type according to the present invention.
Reference numeral 1 denotes a storage box body on which a protective side plate of the electronic device storage box is stretched and has an upper opening for exhaust on the upper surface.
An internal exhaust port 2 is provided on the upper surface of the storage box body 1 for releasing heat generated by the electronic device having an upper opening formed on the upper surface of the storage box body 1 to the upper surface of the storage box body 1 by exhaust.
3 is fixed to cover the upper surface of the storage box body 1 with an exhaust gap for guiding the exhaust from the internal exhaust port on the upper surface of the storage box body 1 to the outside. It is a ceiling board having the characteristic of sex.
4 is for attaching a plurality of (6) ceiling plates attached at arbitrary positions (six in the example) on the upper surface of the storage box body 1 in order to fix the ceiling plate 3 to the upper surface of the storage box body 1. It is a pillar.
5a, 5b, 5c, and 5d guide the exhaust flow discharged upward from the internal exhaust port 2 in the direction of the four sides that are the entire periphery of the ceiling plate 3 between the upper surface of the storage box body 1 and the ceiling plate 3. The exhaust gap is a gap structure formed by the ceiling plate mounting columns 4 for exhausting from the front, rear, left, and right of the storage box body 1 to the outside.
Reference numeral 6 denotes an electronic device housing box housing portion in which an electronic device is housed, has an air inlet for sucking outside air from the lower portion, and has an internal exhaust port 2 communicating with the upper surface of the housing box body 1 in the upper portion. The upper surface of the storage box body 1 is structured at the upper portion of the storage portion 6.
7, a metal plate for protecting the front surface of the electronic device storage box is attached to the front surface, has a rainproof structure, is located on the front surface of the storage box, and can be opened to store, take out, and maintain electronic devices from the front surface. A storage box door having a front opening.
Although not shown, an electronic device is stored in the storage unit 6, and a transmission unit and a power supply unit, which are heat generation units, are arranged so that the electronic device is positioned below the internal exhaust port 2 of the storage box body 1. In addition, a cooling fan for forced air cooling is further provided at a lower portion thereof. The lower part of the cooling fan serves as an intake port of the housing box body 1.

2 is a partial cross-sectional view of the electronic equipment storage box of the outdoor installation type according to the present invention. FIG. 2 (D) shows a cross section of FIG. 1D-D ′, and FIG. 2 (B) shows a cross section of FIG. Show.
Exhaust of the outdoor installation type electronic device storage box of the present invention in which the electronic device is stored will be described with reference to FIGS.
Air as the outside air temperature is sucked in by the forced intake of the cooling fan from the suction port provided on the bottom surface of the storage box body 1.
The air flow of the outside air that is forcibly sucked is applied to the heat generating portion of the heat generating unit, and the heat generating unit is cooled by the air flow of the outside air temperature.
The heated air flow applied to the heat generating portion of the heat generating unit is discharged upward from the internal exhaust port 2 provided on the upper surface of the housing main body 1.
The air flow discharged upward from the internal exhaust port 2 is changed in the front, rear, left, and right directions by the inner wall surface of the ceiling plate 2, and enters an internal gap h formed between the upper surface of the storage box body 1 and the ceiling plate 2. It is guided.
The air flow guided to the internal gap h formed between the upper surface of the storage box main body 1 and the ceiling plate 2 passes through this gap h and is between the upper surface of the storage box main body 1 and the ceiling plate 2. The exhaust side is formed from the front exhaust gap 5a formed to exhaust from the four sides which are all peripheral edges of the exhaust gas, the exhaust b is formed from the rear exhaust gap 5b, and the exhaust c is formed from the right exhaust gap 5c. Then, the left exhaust gap 5d becomes exhaust d, and the heated air flow is exhausted from each gap.
At this time, each of the plurality (six) of ceiling plate mounting columns 4 does not block the air flow, does not cause vortex flow, and the like, and the exhaust air passage is ensured in the front, rear, left and right. It is formed in a thin pillar.
According to the above description, the outdoor installation type with a configuration in which the gap formed between the upper surface of the storage box main body and the ceiling plate and the gap for exhausting ensure a good air flow and can perform predetermined cooling on the electronic device. It is an electronic equipment storage box.

  The present invention is applied to a wireless communication system used for mobile communication or fixed communication and can be used for a communication business or the like.

It is a perspective view of the outdoor installation type electronic equipment storage box of the present invention. FIG. 3 is a partial cross-sectional view of the outdoor installation type electronic device storage box of the present invention. It is a perspective view of the outdoor installation type electronic device storage box of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Containment box main body 2 Internal exhaust port 3 Ceiling board 4 Ceiling board installation pillar 5 Exhaust clearance 6 Accommodation part 7 Accommodation box door 8 Ceiling board installation angle

Claims (1)

An outdoor installation type electronic device storage box provided with a storage portion for storing electronic devices,
The electronic device storage box includes a ceiling plate that guides the exhaust from the electronic device exhausted from an internal exhaust port at the top of the storage part to the outside.
In order to guide the exhaust from the electronic device to the outside, the ceiling panel is fixed via a plurality of ceiling panel mounting columns mounted at arbitrary positions on the upper part of the housing portion, It is formed in a gap structure that keeps an exhaust gap that is exhausted from the surroundings to the outside, and is arranged on the upper part of the accommodating portion,
An electronic device storage box configured to cool the electronic device.

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