JPH0831702B2 - Housing for mounting electronic components - Google Patents

Description

The present invention relates to a housing for mounting electronic components, and more particularly to a housing for mounting electronic components suitable for achieving low noise and good cooling effect.

[Conventional technology]

The Nikkei Byte, January 1981, p. 15 has been used as an example of a conventional housing for mounting electronic components that improves cooling effect with low noise.
6, those shown in FIG. 3 (Nikkei Inc.) are known. As shown in the outline of FIG. 2, the mounting case has a fan 3 attached to the outer wall of the case 1.
Does the operation suck out the hot air in the housing to the outside?
As shown in FIG. 2 (a), or outside low temperature air is blown into the inside (FIG. 2 (b)). However, they did not consider low noise and uniform cooling inside the housing.

[Problems to be solved by the invention]

As described above, the above-mentioned conventional technology does not consider low noise and uniform cooling of the inside of the apparatus, and since the fan is attached to the outer wall of the housing, the rotation noise and wind noise of the fan are directly exposed to the outside. There was a problem that the level of noise increased when coming out. Further, in the method of FIG. 2 (a), the air in the housing flows on average, but the wind speed is slow, so if there is a particularly large heat generating part in a part of the housing, cooling will not be sufficient,
Further, in the method of FIG. 2 (b), the wind speed is fast and the cooling efficiency is good just before the fan, but there is a place where the wind does not flow in other places, heat is gathered, and the temperature becomes abnormally high. There was a problem of reducing reliability.

An object of the present invention is to provide a novel housing for mounting electronic components that reduces noise due to a fan and that efficiently cools the inside of the housing.

[Means for solving problems]

The above-mentioned object is to partition a housing for mounting electronic parts into two small chambers, and to install cooling liquid in one small chamber to suck out cooling, and to install the electronic parts in the other small chamber. This is accomplished by providing a cooling fan that provides blow-off cooling.

[Work]

A housing for mounting electronic components is divided into two small chambers by a partition wall provided with a cooling fan, and one small chamber is sucked and cooled and the other small chamber is blown and cooled by the cooling fan. Then, for example, a non-heat-generating electronic component is mounted in the one small chamber, and a heat-generating electronic component is mounted in the other small chamber.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. In FIG. 1, reference numeral 1 denotes a mounting housing, which is usually in the shape of a quadrangle. The inner region is partitioned by a partition wall 2 at a middle position of the housing so as to form two small chambers A and B. A fan 3 is attached to the center of the partition wall 2 and its rotation is set so that the air flow is suction cooling in the chamber A and blow cooling in the chamber B.

In the chamber A, electronic components such as a floppy disk 4, a hard disk 5, and printed circuit boards 5, 6 on which ICs, LSIs, etc. are mounted, which do not generate heat at all, or generate a relatively small amount of heat, are mounted. The chamber has a power transistor 7 in front of the fan 3 and a heat radiation fin 8 for heat of the power transistor.
An electronic component, such as a power supply device including the above, that generates a large amount of heat as compared with the electronic component is mounted.

An air inlet 9 is provided over a considerable side surface of the housing 3 for mounting mounting facing the fan 3 on the chamber A side, and on the side of the chamber B, air is provided on the side surface of the housing 1 orthogonal to the air flow by the fan 3. A discharge port 10 is provided.

If necessary, a sound absorbing material 11 is attached to the inside of the chamber B or the like, and a soundproof wall 12 is provided in parallel with the air outlet 10.

In the above structure, the rotation of the fan 3 sucks air from the suction port 9, flows through the chamber A to the chamber B, and the discharge port 10,
It is discharged from 10. At this time, in the room A, the air is widely sucked through the suction port 9 provided over a considerable surface of the housing. For this reason, an air flow is uniformly formed, there is no place where air stagnates, and the electronic components in the A room are cooled on average.

Further, the air passing through the room A is blown into the room B with almost no heating in the room, but in the room B where high heat-generating components are stored, the air is cooled at a high wind speed (2 m / s or more) due to the blowing. Therefore, the cooling effect is about twice or more compared to the slow wind side (generally 0.5 m / s or less) due to the blowing. Moreover, such an air flow blown into the chamber B hits the power transistor 7 installed in front of the fan 3, advances in two directions opposite to each other, and is discharged to the outside. Therefore, the stagnation of air in the B room is eliminated. Further, the fan 3 is installed in the partition wall 2 in the inner part of the housing, and the sound absorbing material 11 and the soundproof wall 12 enhance the sound deadening effect, and the noise can be reduced.

〔The invention's effect〕

According to the present invention, the whole body can be cooled on average because the air flows uniformly by suction cooling and there is no place where the air stagnates. A high cooling effect can be obtained for the whole body. Further, since the fan is not attached to the outer wall of the housing, the fan's rotation noise and wind noise do not directly come out to the outside, and noise can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view of a mounting housing according to the present invention, and FIGS. 2 (a) and 2 (b) are explanatory views of a conventional housing. 1 ... Mounting case, 2 ... Partition wall, 3 ... Cooling fan, 4 ... Floppy disk, 5 ... Hard disk, 6 ... Printed circuit board, 7 ... Power transistor, 8 ... Heat dissipation fin , 11 …… Sound absorbing material, 12 …… Soundproof wall.

Claims (5)

[Claims] 1. A housing for mounting an electronic component on which an electronic component and a power source component for supplying power to the electronic component are mounted, a partition wall separating an area for accommodating the power source component from an area for accommodating the electronic component. A fan is installed on the partition wall, an inlet is provided in the housing in an area for storing the electronic component, and only a discharge port is provided in the housing in an area for storing the power supply component. A housing for mounting electronic components, wherein cooling of electronic components is performed by suction and cooling of the power source components is performed by blowout cooling. 2. The electronic component mounting housing according to claim 1, wherein a power transistor, which is a high heat generating component among the power source components, is mounted near the outlet of the fan. Housing for mounting electronic components. 3. The electronic component mounting housing according to claim 1, wherein the discharge port is provided on a side surface of the housing perpendicular to a wind direction of the fan. Housing for mounting parts. 4. A housing for mounting an electronic component according to claim 1, wherein a part for excluding the discharge port in an area for accommodating the power source component is provided with a sound deadening facility. A housing for mounting electronic components. 5. The housing for mounting electronic parts according to claim 4, wherein the sound deadening equipment is a sound absorbing material installed on most of an inner wall of an area for housing the power supply parts. A housing for mounting electronic parts, which is characterized in that