| 摘要 |
PROBLEM TO BE SOLVED: To enable color unmixed illumination by forming a hole for respectively exposing plural operation keys outside from the inside, and providing a case for forming a rib extending inward along a boundary divided into illumination areas, plural light emitting elements classified by color and a rubber sheet interposed between the case and a switch base board. SOLUTION: For example, three and six light emitting elements 6-1, 6-2 are respectively arranged in an area shown by an area 5-1 and an area 5-2 on a base board 4. The light emitting elements 6-1, 6-2 are different in a light emitting color, and a rib 9 is newly arranged inside a case 1 along a boundary between these two areas in a key operation part area 2-1 of a case 1. A recessed groove 10 coincident with the rib 9 is similarly formed along the boundary on a rubber sheet 3, and the rib tip is fitted to the recessed groove 10 to cut off the light of the light emitting elements 6-1, 6-2 so as not to be transmitted to the other area.
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