Patent ID: 8173921
Filing Date: 2012-05-08
Classification: H01H

Abstract:
1. A switch module, comprising: a substrate including an upper surface; a plurality of switches provided on the upper surface of the substrate; a first light-guiding sheet including an upper surface, a lower surface, and a peripheral edge between the upper surface and the lower surface, the first light-guiding sheet being disposed above the plurality of switches; a second light-guiding sheet including an upper surface, a lower surface, and a peripheral edge between the upper surface and the lower surface, the second light-guiding sheet being layered above the first light-guiding sheet; at least one first light source disposed on the upper surface of the substrate to emit light into the first light-guiding sheet through the peripheral edge of the first light-guiding sheet; at least one second light source disposed on the upper surface of the substrate to emit light into the second light-guiding sheet through the peripheral edge of the second light-guiding sheet; and a illumination-control device switching on/off of the first light source and the second light source.