Electronic illumination apparatus

Details Electronic illumination apparatus Electronic illumination apparatus

1993-09-23

1996-11-19

Cuchlinski, Jr., William A.

Signals and indicators

Indicators

Rotary indicator with actuating means

116310, 338166, 338184, G01O 1128, H01C 102

Patent

active

055752357

ABSTRACT:
The present invention relates to an electronic illumination apparatus which may be used in audio equipment. The electronic illumination apparatus allows recognition of the position of rotational operation of a knob by the light from a built-in light emitting diode. The object of the present invention is to provide an illumination type electronic part of rotational operation which is readily adaptable to changes in specifications for the rotational operation shaft. The disclosed apparatus also is able to withstand a strong thrust force applied to the rotational operation shaft, to reduce the hitting sound emitted from the rotatable stopper of the rotational operation shaft, and also to light up the illumination means disposed on the end of the rotational operation shaft in a stable manner. In order to achieve the foregoing object, the rotational operation shaft is made in a simple hollowed cylindrical shape, and the rotor having a stopper for restricting the extent of its rotational motion is prepared separately from the rotational operation shaft, preferably by resin molding. More preferably, the rotor is made of a transparent resin and integrally molded together with the light collecting lens for the light emitting apparatus.

REFERENCES:
patent: 3819928 (1974-06-01), Kuroyama et al.
patent: 3848219 (1974-11-01), Oka
patent: 3920980 (1975-11-01), Nath
patent: 3920986 (1976-07-01), Seyler et al.
patent: 3997864 (1976-12-01), Oka et al.
patent: 4500167 (1985-02-01), Mori
patent: 4542366 (1985-09-01), Oyama
patent: 4739300 (1988-04-01), Kuratani
patent: 4914417 (1990-04-01), Matsui et al.

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