SWITCH

PROBLEM TO BE SOLVED: To prevent the illumination luminance of knobs from changing by a large amount, when the knobs are operated. SOLUTION: A switch includes push knobs 10, 20, and a lens 90 for guiding light from a light source 73 on a printed circuit board 70 for the push knobs for illumination, wherein the distance between an incident surface 92c of the lens 90 and the light source 73 is changed, with the lens 90 moving by operating the push knobs. A recess groove 98 intersecting the light path of a light made incident on the lens 90 is formed in the lens 90, and a protruding wall 68, protruding toward the lens 90 side, is provided, at a position corresponding to the recess groove 98 on the printed circuit board 70. When the lens 90 is moved in a direction of reducing the distance between the incident surface 92c and the light source 73, the protruding wall 68 is inserted into the recess groove 98, according to the moving amount of the lens 90, and the light path is shielded, according to the moving amount of the lens 90, so that the light mount for illuminating the push knobs 10, 20 becomes substantially constant, regardless of movement of the lens 90. COPYRIGHT: (C)2011,JPO&INPIT