Patent ID: 8334471

Claim:
A push button switch comprising: a circuit board; a light emitter and a switch arranged on the circuit board; a base arranged above the switch; and a light guiding member and a button mounted on the base, the light guiding member comprising a first end, a second end, a first reflective surface, a second reflective surface, and a protruding tab protruding from the light guiding member, the first end being arranged above the light emitter, wherein light from the light emitter enters the light guiding member from the first end, and goes to the second end after being reflected by the first reflective surface and the second reflective surface; the button comprising a fixing member and a pressing member stacked on the fixing member, wherein the fixing member and the pressing member cooperate to define a cavity, a plurality of reinforcing ribs protrude downwards from the ceiling of the cavity, and the protruding tab is received in the cavity and abuts against the reinforcing rib.