Electricity: circuit makers and breakers – Electric switch details – Indicators
Patent
1992-12-23
1995-11-28
Recla, Henry J.
Electricity: circuit makers and breakers
Electric switch details
Indicators
200292, 200311, 200313, 200314, H01H 900
Patent
active
054710235
ABSTRACT:
A light illumination membrane switch having a configuration with a reduced size, capable of realizing an effective light illumination of the keys and a highly reliable operation even under the high humidity environment. The switch has a light source section using an LED bare chip element for emitting lights to illuminate the key section which is directly mounted on the electrode circuit member of the printed circuit board. The switch may include a translucent diffuser member having a cavity region for directly transmitting the lights emitted from the light source section to the key section. The switch may include a translucent diffuser member having a side wall portion defining an opening such that the translucent diffuser member and the printed circuit board are assembled together by inserting the printed circuit board into the opening defined by the side wall portion. The switch may include a translucent diffuser member having reflective coating layer formed thereon for reflecting the lights emitted from the light source section into the translucent diffuser member.
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patent: 4343975 (1982-08-01), Sado
patent: 4460810 (1984-07-01), Fukukura
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patent: 4638131 (1987-01-01), Kidd et al.
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patent: 4774434 (1988-09-01), Bennion
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Design Engineering, Jun. 1987, p. 30, "Flexible Switch Panels Feature Integral Illumination and Power".
Patent Abstract of Japan, vol. 13, No. 383, (E-811)(3731) Aug. 24, 1989, JP-A-01 134 827, May 26, 1989.
Patent Abstracts of Japan, vol. 10, No. 137, (E-405)(2194) May 21, 1986, JP-A-61 001 066, Jan. 7, 1986.
Horii Atsuhiro
Kaizu Masahiro
Fujikura Ltd.
Recla Henry J.
Walczak David J.
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