Heat radiating device for notebook computer

Details Heat radiating device for notebook computer Heat radiating device for notebook computer

1999-07-26

2001-01-09

Lazarus, Ira S. (Department: 3743)

Heat exchange

With impeller or conveyor moving exchange material

Mechanical gas pump

C165S080300, C361S697000

Reexamination Certificate

active

06170563

ABSTRACT:

CROSS-REFERENCES TO RELATED APPLICATIONS
Not Applicable.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a heat radiating device, and more particularly to a heat radiating device for a notebook computer.
2. Description of the Related Art
A conventional heat radiating device (
1
) for a notebook computer (
20
) in accordance with the prior art shown in
FIG. 5
comprises a metallic heat sink (
11
) mounted on the top of the central processing unit (not shown) of the notebook computer (
20
) and includes multiple fins (
111
), a support base (
12
) extending from the metallic heat sink (
11
), and a fan (
13
) including a casing (
131
) secured on the support plate (
12
), and a fan body (
132
) rotatably mounted in the casing (
131
). Some of the fins (
111
) extend through the support base (
12
), thereby defining multiple guide grooves (
122
) each connecting to the exhaust port (
21
) contained in the notebook computer (
20
). In operation, the heat emitted from the central processing unit of the notebook computer (
20
) is conducted to the fins (
111
) of the heat sink (
11
), and can then be carried outward through the guide grooves (
122
) of the support base (
12
) to the exhaust port (
21
) of the notebook computer (
20
) by means of the air moved by the rotation of the fan body (
132
) of the fan (
13
).
The air flow produced by the rotation of the fan body (
132
) will flow in two directions as indicated by the arrows so as to be forced out through the exhaust port (
21
) and flow into the inside of the notebook computer (
20
) simultaneously such that the hot air flow easily returns to the inside of the notebook computer (
50
), thereby decreasing the heat dissipation efficiency of the heat radiating device (
1
). In addition, the fan (
13
) is directly mounted on the support base (
12
), thereby increasing the total height of the heat radiating device (
1
). The present invention has arisen to mitigate and/or obviate the disadvantage of the conventional heat radiating device.
BRIEF SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, a heat radiating device for a notebook comprises a metallic heat sink including multiple first fins mounted therein; a support base attached to the metallic heat sink and containing a recess therein, the support base having a first side abutting the first fins and a second side containing a grille-shaped air discharge port; multiple second fins received in the recess and each having a height smaller than that of the recess; and a fan including a support plate secured on the support base and containing a hole, a support bracket mounted on the support plate and received in the recess, and a fan body rotatably mounted on the support bracket.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.


REFERENCES:
patent: 5437327 (1995-08-01), Chiou
patent: 5452181 (1995-09-01), Hoover
patent: 5629834 (1997-05-01), Kodama et al.
patent: 5661638 (1997-08-01), Mira
patent: 5787971 (1998-08-01), Dobson
patent: 5940268 (1999-08-01), Miyahara et al.
patent: 5940269 (1999-08-01), Ko et al.
patent: 5978219 (1999-11-01), Lin

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