Electronic apparatus having heat sink for cooling circuit compon

Details Electronic apparatus having heat sink for cooling circuit compon Electronic apparatus having heat sink for cooling circuit compon

1994-01-04

1995-03-28

Phillips, Michael W.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

361711, H05K 720, G06F 116

Patent

active

054023114

ABSTRACT:
A portable electronic apparatus includes a box type housing made of synthetic resin and having a top wall in which an opening is formed. The housing houses a heat radiating circuit component therein which faces the opening of the top wall of the housing. A keyboard device is provided at the housing in such a manner as to close the opening of the top wall. The keyboard device has a bottom surface, covered by a metal plate, which faces the circuit component. A heat sink is provided between the circuit component and the metal plate. A metal shield is provided between the metal plate and the heat sink. The heat sink includes a bag formed of a flexible film and a liquid refrigerant with which the bag is filled. The bag is in contact with both the circuit component and the metal shield, and can thus absorb heat from the circuit component and transmit the heat to the metal plate.

REFERENCES:
patent: 4864523 (1989-09-01), Sasaki
patent: 4997032 (1991-03-01), Danielson et al.
patent: 5115374 (1992-05-01), Hongoh
patent: 5237486 (1993-08-01), LaPointe et al.
patent: 5313362 (1994-05-01), Hatada et al.
"Spring-Clip Mounted Extruded Aluminum Heat Sink", IBM Technical Disclosure Bulletin, vol. 23, No. 12, May, 1981, p. 5303, F. A. Almquist and H. B. Parsapour.

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