Patent ID: 6909355
Filing Date: 2005-06-21
Classification: H01C

Abstract:
1. An illumination-type rotary variable resistor comprising: (a) a housing including: (b) an annular insulating substrate housed in the housing facing the bottom plate, the annular Insulating substrate being provided with a resistor film and an LED conductive film on a surface which is facing in the first direction; (c) an insulating resin operating knob including: (d) a cover attached to the housing and covering the flange; and (e) a surface-mount LED fitted at an end of the through hole in the second direction; wherein the resistor slider slidably and resiliently contacts the resistor film, a first contact of the LED slider resiliently contacts an electrode of the surface-mount LED, and a second contact of the LED slider slidably and resiliently contacts the LED conductive film; wherein the resistor film is formed annularly centering on a center axis of the annular insulating substrate, a cross point of a line passing the through hole along the first direction and the insulating substrate exists between an inner-radius end and an outer-radius end of the resistor film and the LED conductive film is disposed on the outer radius of the resistor film concentrically.