Keyboard device

Details Keyboard device Keyboard device

1998-09-22

2000-10-10

Friedhofer, Michael

Electricity: circuit makers and breakers

Electric switch details

Cases and bases

361687, 361689, H05K 720

Patent

active

061303887

ABSTRACT:
In a keyboard device, a cooling heat pipe containing a coolant is formed integrally with a support plate. The cooling heat pipe is incorporated in a personal computer in close proximity to an IC component that generates a large quantity of heat, it is possible to cool both IC component and switch member. It is therefore possible to suppress elongation of the sheets that comprise the switch member. The keyboard is kept free of any contact defect formed as a result of this expansion due to heating and subsequent contraction due to cooling.

REFERENCES:
patent: 5313362 (1994-05-01), Hatada et al.
patent: 5383340 (1995-01-01), Larson et al.
patent: 5568360 (1996-10-01), Penniman et al.
patent: 5757615 (1998-05-01), Donahoe et al.
patent: 5764483 (1998-06-01), Ohashi et al.
patent: 5805417 (1998-09-01), Nakagawa et al.

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