H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 9/00 (2006.01) G02B 26/08 (2006.01) G02F 1/31 (2006.01) G02F 3/02 (2006.01) H01H 13/702 (2006.01)
Patent
CA 2061565
A flat keyboard switch comprises a printed circuit board having a plurality of fixed contacts and a light emitting element provided thereon, a diaphragm disposed above the fixed contacts and serving as a movable contact for electrically connecting the fixed contacts to each other, a surface sheet having an indicium printed at a portion thereof above the diaphragm, the indicium being made of a material having a light transmitting property, a movable element disposed between the diaphragm and the surface sheet, a light introducing plate disposed in the neighborhood of the light emitting element for scattering light emitted from the light emitting element toward the movable element, and a light introducing member interposed between the movable element and the light introducing plate being formed as a unitary member together with the movable element and the light introducing plate.
Commutateur de clavier plat. Comprend une carte de circuits imprimés ayant un certain nombre de contacts fixes et un élément luminescent; une membrane disposée au-dessus des contacts fixes et servant de contact mobile pour connecter électriquement les contacts fixes entre eux; une feuille de couverture portant, sur une partie située au-dessus de la membrane, une indication imprimée composée d'un matériau capable de transmettre la lumière; un élément mobile disposé entre la membrane et la feuille de couverture, une plaque d'introduction de lumière disposée à proximité de l'élément luminescent pour disperser la lumière de ce dernier en direction de l'élément mobile, et un élément d'introduction de lumière interposé entre l'élément mobile et la plaque d'introduction de lumière, et faisant corps avec eux.
Corporation Nec
G. Ronald Bell & Associates
LandOfFree
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