Sliding operation type electric part

A sliding operation type electric part comprising:

• a horizontal base plate made of insulating material and have conductive patterns formed on an upper surface thereof;
• a frame made of an insulating material mounted on said base plate having a horizontal upper wall provided with a lower surface thereof spaced vertically from the upper surface of said base plate, said frame having a plurality of slits formed through said upper wall which are in parallel and spaced laterally apart from each other;
• a plurality of slider holders slidably mounted in the space between said upper wall of said frame and said base plate having respective operation knobs with illuminated ends which project through said slits to an upper side of said frame so that said knobs can be operated to move the respective slider holders longitudinally on the respective conductive patterns formed on the upper surface of said base plate,
• wherein said frame includes, for each of said slits, a pair of conductive plates provided on said lower surface of said upper wall, each of said conductive plates extending longitudinally on a respective side of said slit, and
• wherein each of said slider holders includes a first slider holder to which said knob is mounted, a light emitting member mounted on the illuminated end of said knob having a pair of terminals extending downward through said knob toward said first slider holder, a pair of first sliders mounted on an upper side of said first slider holder and extending in electrical contact slidably with the pair of conductive plates, respectively, connecting portions buried in said knob connecting said first sliders to said terminals of said light emitting member, respectively, a second slider holder mounted on a lower side of said first slider holder, a second slider carried on said second slider holder and extending on a lower side thereof in electrical contact slidably with a respective conductive pattern on said base plate, and linking means for physically uniting said first and second slider holders in one body.