JPH0729893U - Electrical equipment case - Google Patents

Abstract

(57) [Summary] [Purpose] A large enough heat radiation fin in the case of electrical equipment that accommodates a large number of heat-generating electrical parts such as switching power supplies and requires heat radiation by heat radiation fins. Provided is a case of an electric device which is miniaturized as a whole. A first storage space having a height sufficient for accommodating an electrical component that is relatively bulky, and a first storage space that is sufficient for accommodating an electrical component that is not relatively bulky. A second storage space having a height lower than the height is adjacent to the second storage space, and a heat dissipation fin having a height difference between the heights of the two storage spaces is provided above the second storage space. The case is formed, and the thickness for forming the radiation fin is not added to the upper portion of the first storage space for storing the relatively bulky electric component, and the electric device is downsized.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a case of an electric device in which a radiation fin is integrally formed.

[0002]

[Prior art]

 Conventionally, as shown in FIG. 5, a general configuration of a case of an electric device, in which a large number of heat-generating electric components such as a switching power supply, which accommodates a large amount of electric power, is housed, is shown in FIG. It is mounted on the printed circuit board B and then housed therein, and at the upper part of the mounting side of the electric component P, a heat radiation fin F for facilitating heat radiation in the case to the outside is integrally formed.

In a case of an electric device such as a switching power supply in which electric components incorporated therein have different heights, the electric component which is the most bulky among the electric components to be incorporated. If the height of the case is set to be high enough to accommodate the housing, a space that does not exist above the electrical components that are relatively bulky will remain as an essentially useless space. .

In the case of such an electric device, the thickness for forming the radiation fins is added among the built-in electric parts, which not only makes the electric device large but also makes the electric part relatively bulky. Above the above, a space that does not exist remains as a space that is essentially wasted, and this space was a hindrance to heat dissipation by accumulating a high-temperature air layer.

[0005]

[Problems to be solved by the device]

 The present invention accommodates a large number of heat-generating electric components such as a switching power supply that handles a large amount of electric power, and in the case of an electric device that requires heat dissipation by means of heat dissipation fins, it has a sufficient size heat dissipation fin, It aims to provide a miniaturized case for electrical equipment.

[0006]

[Means for Solving the Problems]

 A first storage space having a height sufficient to accommodate relatively bulky electrical components, and a first storage space having a height sufficient to accommodate relatively non-bulky electrical components. A storage fin adjacent to a second storage space having a height lower than that of the second storage space is provided with a heat dissipation fin having a height which is a difference between the heights of the storage spaces. Configure the equipment case.

[0007]

[Action]

 According to the case of the electric device of the present invention, since the radiation fin is provided only on the upper part of the second storage space for storing the relatively low-bulk electric component, the first case for storing the relatively high-bulk electric component is provided. Since the thickness for forming the radiation fin is not added to the upper part of the storage space, the electric device is downsized, and no extra space is taken above the second storage space. The smooth heat dissipation is achieved without the hot air layer staying in this area.

[0008]

【Example】

 FIG. 1 shows a first embodiment of the present invention, in which a case 1 of an electric device is provided with electric components 2 and 3 mounted on a printed circuit board 4 and is housed therein. A first storage space 5 having a height sufficient to accommodate the bulky electric component 2; and a first storage space 5 sufficient to accommodate the relatively low bulky electrical component 3. The second storage space 6 having a height lower than that of the second storage space is adjacent to the second storage space 6, and the heat radiation fins 7 having a height H which is a difference between the heights of the storage spaces 5 and 6 are provided in the second storage space. It is provided on the upper part of 6.

According to the present embodiment, the heat is dissipated at the height H of the difference between the heights of the storage spaces 5 and 6 above the second storage space 7 for storing the electric component 3 which is not relatively bulky. Since the fins 7 are provided, the thickness for forming the radiating fins 7 is not added to the upper part of the first storage space 5 for storing the relatively bulky electric component 2, and the electric device is downsized. In addition, since no extra space is provided above the second storage space 5 in which the electric parts 3 that are not relatively bulky are stored, smooth heat dissipation is performed without retaining a high-temperature air layer.

FIG. 2 shows a second embodiment of the present invention, and like the first embodiment, a case 1a of an electric device has an electric component 2a which is relatively bulky inside thereof. The relatively low-bulk electric component 3a is mounted on the printed circuit board 4a and then stored. The first high-height electric component 2a has a height sufficient to store the relatively high-bulk electric component 2a. A storage space 5a and a second storage space 6a having a height lower than the height of the first storage space 5a, which is sufficient to store the relatively low-bulk electric component 3a, are adjacent to each other. The radiating fins 7a having the height H which is the difference between the heights of the two storage spaces 5a and 6a are provided above the second storage space 6a.

As a configuration unique to this embodiment, a part of the heat radiation fin 7a is extended to the second storage space 6a to form a recess 8 that opens toward the second storage space 6a. A spring member 9 fixed in the recess 8 is used to bring an electric component 3a, which is not relatively bulky, into contact with the inner wall surface of the case of the recess 8.

According to this embodiment, the same effect as that of the first embodiment can be expected, and since the inner surface of the case and the electric parts are fixed at a short distance, the electric power can be maintained even in an environment where vibration is always generated. Even when the equipment is used, mechanical stress on the parts is reduced, and the occurrence of cracks on the soldered parts can be prevented.

Further, since the spring member 9 for fixing this electric component to the inner wall of the case of the recess 8 is fixed not to the printed circuit board 4a but to the inner wall of the case, the electric power on the printed circuit board 4a is reduced. It does not reduce the mounting area of parts. Further, the spring member 9 for fixing the electric component to the inner wall of the case of the recess 8 serves as a heat conduction path from the electric component 3a to the heat radiating fin 7a, so that the heat radiating effect can be further enhanced. It is possible.

FIG. 3 and FIG. 4 show a third embodiment of the present invention, and like the first embodiment, the case 1b of the electric device has an electric component 2b which is relatively bulky inside. And the relatively non-bulky electric component 3b is mounted on the printed circuit board 4b and then stored, and the first electric component 3b having a sufficient height to store the relatively bulky electric component 2b is used. The storage space 5b and the second storage space 6b, which has a height lower than the height of the first storage space 5b and is sufficient to store the relatively low-bulk electric component 3b, are adjacent to each other. The heat radiation fins 7b having the height H which is the difference between the heights of the two storage spaces 5b and 6b are provided above the second storage space 6b.

As a structure peculiar to this embodiment, a spring member 9b for elastically attaching the head of the electric component 3b is fixed to the upper inner wall of the second storage space 6b integrally formed with the heat radiation fin 7b. In this embodiment, the same effect as that of the second embodiment can be expected.

[0016]

[Effect of device]

 Since the present invention adopts the above-described configuration, as a corresponding effect to the configuration of claim 1, the heat dissipation fin 7 is formed in the upper portion of the first storage space for storing the electrical parts which are relatively bulky. The thickness of the electric equipment is not increased, the electric equipment is downsized, and a high space is not created above the second storage space for storing electric parts that are not relatively bulky. The heat is radiated smoothly without accumulating this air layer.

Further, as an effect corresponding to the configurations of claims 2 and 3, since the inner surface of the case and the electrical components are fixed at a short distance, the electrical device is used in an environment where there is always vibration. In this case, the mechanical stress on the parts is reduced, and the occurrence of cracks on the soldered parts can be prevented.The spring member for fixing the electric parts is fixed to the inner wall of the case. Therefore, the mounting area of the electric component on the printed circuit board 4a is not reduced, and the spring member serves as a heat conduction path from the electric component to the heat radiation fin to further enhance the heat radiation effect. It is something that can be done.

[0018]

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a second embodiment of the present invention.

FIG. 3 is a perspective view showing a third embodiment of the present invention.

FIG. 4 is a perspective view showing some parts of the third embodiment of the present invention.

FIG. 5 is a perspective view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case of electric equipment 2 Electrical parts that are relatively bulky 3 Electrical components that are not relatively bulky 4 Printed circuit board 5 First storage space 6 Second storage space 7 Radiating fins 8 Recess 9 Spring member

Claims (3)

[Scope of utility model registration request] 1. A first storage space having a height sufficient to accommodate electric components that are relatively bulky, and a first storage space that is sufficient to accommodate electrical components that are not relatively bulky. Adjacent to the second storage space having a height lower than the height of the space, a radiation fin having a height which is a difference between the heights of the two storage spaces is provided above the second storage space. Electrical equipment case. 2. A recess, which opens toward the second storage space, is formed below the radiating fin, and the upper part of the built-in electric component is provided with a spring member on the inner wall of the case of the recess.
A case of electrical equipment that comes into contact with it. 3. A case of an electric device in which an upper part of a built-in electric component is brought into contact with a fixed spring member below the radiating fin.