JP3091310B2 - Electronics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device such as a computer.
It relates to a child device.

2. Description of the Related Art In an electronic device such as an electronic computer, a cooling fan is provided for cooling a heat-generating component mounted on an internal board. In recent years, noise generated by the cooling fan has been increased in order to improve an office environment. There is a demand for a housing structure that leaks as little as possible to the outside of the housing.

[0003]

2. Description of the Related Art Conventionally, as a housing structure of an electronic device, as shown in FIG. 3, a bottom portion 11 of a housing 1 is opened to form an intake port 12, and a cooling fan 2 blows air. The logic unit 5 such as a board on which the heat-generating components are mounted is cooled.

[0004] An intake space 3 is provided between the intake port 12 and the cooling fan 2, air is sucked through the intake space 3, and a sound absorbing material 5 is provided on a door panel 13 forming a side wall. It was attached to reduce the noise of the cooling fan 2.

[0005]

However, in the conventional structure, the noise from the side wall portion is reduced, but the noise of the cooling fan 2 emitted from the intake port 12 to the floor 6 is reflected on the floor 6. Therefore, there is a drawback that the air is discharged into the room through a gap between the floor and the floor, which is opened for the intake.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electronic device capable of preventing noise caused by reflection of an operation sound of a cooling fan from a suction port on a bottom surface to a floor surface .

[0007]

According to the present invention, there is provided the above object.
Is a suction space is formed below the cooling fan provided in the housing, formed by opening the air inlet on the bottom surface of the housing
Oite the electronic apparatus, the lateral side of the intake space is closed by an openable door panel, and on the inside of the door panel, the sound absorbing plate to project into the intake space portion takes
Provide electronic equipment characterized by being attached
Is achieved by

[0008]

According to the present invention, based on the above configuration, in the present invention, the intake space 3 formed between the cooling fan 2 and the intake port 12 is provided.
By projecting the sound absorbing plate 4 from the door panel 13, the noise generated by the rotation of the cooling fan 2 is absorbed by the sound absorbing plate 4, and the noise is prevented from being reflected from the intake port 12 to the floor.

Further, the sound absorbing plate 4 is provided on the door panel 13.
When the door panel 13 is opened,
It is located outside the intake space 3 together with the door panel 13, and does not hinder work such as connection of a cable to an external connection terminal provided using the intake space 3.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 1 is an explanatory view showing an embodiment of the present invention, and FIGS. 2A and 2B are cross-sectional views of a door panel 13 provided with a sound absorbing plate 4.

As shown in FIG. 1, a housing 1 in which electronic equipment is built has a cooling fan 2 provided below a logic section 5 composed of a board or the like on which heat-generating components are mounted, thereby preventing the logic section 5 from being overheated. In order to cool the air, the intake port 12 is opened in the bottom face 11 and the exhaust port 15 is opened in the top face 14, respectively.

Further, the side portion 16 of the housing 1 is formed to be openable and closable by a door panel 13 in order to facilitate inspection and maintenance of the logic portion 5, and between the cooling fan 2 and the intake port 12. Has an intake space 3 formed therein.

The intake space 3 includes a cooling fan 2 and an intake port 1.
2 so that the rotation noise of the cooling fan 2 is not directly emitted to the floor surface, and the external connection terminal 7 is provided using the intake space 3 to connect the external device or the like to the connector. 8 can be connected, and the connection portion can be stored without being exposed to the outside of the housing.

The inside of the door panel 13 is shown in FIG.
(A) and (b), as shown in FIG.
The sound absorbing plate 4 is formed by opening a plurality of ventilation holes 42 in a sound absorbing material 41 such as glass wool. And the space between the air inlets 12 can be provided.

Further, by arranging the ventilation holes 42 of the sound absorbing plates 4 formed in multiple stages so as not to overlap each other in a plane position, the rotation noise of the cooling fan 2 is directly transmitted from the ventilation holes 41 to the intake port 12. The soundproof effect can be enhanced without leaking.

When the connector 8 is connected using the external connection terminal 7 provided in the intake space 3, the door panel 13 is opened to protrude into the intake space 3. The sound absorbing plate 4 together with the door panel 13
It is taken out of the intake space 3 and the inside of the intake space 3 is opened to facilitate the connection work of the connector 8.

[0017]

As described above, the electronic apparatus of the present invention
According to the present invention , the noise of the cooling fan in the housing can be prevented from leaking from the air inlet and reflecting on the floor surface, thereby reducing noise. The work of attaching the connector to the provided connection terminal does not decrease.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing a main part of FIG. 1;
1 is a sectional view taken along line AA, and FIG. 2B is a sectional view taken along line BB in FIG.

FIG. 3 is a sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 11 Bottom part 12 Inlet 13 Door panel 2 Cooling fan 3 Suction space part 4 Suction plate

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H05K 7/20 H05K 5/02

Claims (1)

(57) [Claims] 1. A forming a suction space below the cooling fan provided in the housing, Oite to an electronic device comprising open the air inlet on the bottom surface of the housing, the side of the intake space Is closed by a door panel that can be opened and closed, and a sound absorbing plate projecting into the intake space is attached inside the door panel .
Electronic equipment characterized by the following.