| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting switch that enables a light source to be assembled at the surface side of a board and secures the durability of a light irradiation hole of a movable contact piece.SOLUTION: A lighting switch 1 has a board 2 having a fixed contact 3 around the center position of the surface, and a contact piece 4 at a position on the surface which is away from the center position, a light source 5 secured at the center position on the surface of the board 2, a dome type movable contact piece 6 having a click action function which has a projection portion 7 formed by projecting the periphery of an irradiation hole 8 at the center position to a convex surface side, faces the surface of the board 2 through a concave face and is in contact with the contact piece 4 through an outer edge portion 9 at all times, a fixing sheet 10 which is brought into contact with the convex surface of the movable contact piece 6 to fix the movable contact piece 6 to the surface of the board 2, and a key pad 11 formed of a light-transmissible material which is indirectly or directly brought into contact with the surface of the projection portion 7. |
