Patent attributes
A switching device includes a holder, an operation knob, a ring-like antenna, and a circuit board on which wire connecting the antenna to an external circuit and a detection means (switching portion) for detecting an operation of the knob are disposed. A light source for illuminating a display on the knob is disposed on the circuit board. A transparent lens member disposed on an outer periphery of the knob transmits a light from the light source so as to illuminate the outer periphery of the knob. A slider with a light guide path for a LED is accommodated in the holder so as to be movable forward and rearward integrally with the operation. The antenna is integral with the lens member. The knob and the slider are disposed in a center hole of the lens member.
