Vehicle illumination control circuit

Details Vehicle illumination control circuit Vehicle illumination control circuit

1986-09-29

1988-11-22

Moore, David K.

Electric lamp and discharge devices: systems

Special application

Vehicle

315 78, 315 83, 315 84, 307 10LS, 307 10R, 340 79, 340 76, B60Q 126

Patent

active

047868430

ABSTRACT:
In order to permit the simultaneous variation of the illumination of a clock and the illumination of instruments included in an instrument panel of an automotive vehicle or the like, a single illumination control device is connected with the ignition switch and a lighting control switch in a manner that when the lighting switch is on, the voltage applied to the bulbs which illuminate the clock and the instrument panel are simultaneously controlled while the tail lamp bulbs are constantly energized to their normal level when only the ignition switch is on, current is fed to the clock illumination bulb. The resistance inherently provided by the plurality of bulbs used in the instrument panel and tail lamp assemblies prevents illumination of the same under such circumstances.

REFERENCES:
patent: 3628085 (1971-12-01), Brock
patent: 4071805 (1978-01-01), Brock
patent: 4123668 (1978-10-01), Pecota
patent: 4376909 (1983-03-01), Tagami et al.
patent: 4550303 (1985-10-01), Steele

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