Automobile room lamp system

Details Automobile room lamp system Automobile room lamp system

2008-03-13

2010-12-14

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Special application

Vehicle

C315S083000, C315S084000, C315S224000

Reexamination Certificate

active

07852007

ABSTRACT:
An automobile room lamp system is provided, which comprises a first circuit having a power source with positive and negative poles, a light emitting diode, a miniature incandescent bulb and a push switch, said light emitting diode, said miniature incandescent bulb and said push switch being connected in series between said positive pole and said negative pole; and a second circuit branching off from said first circuit between said light emitting diode and said miniature incandescent bulb and having a resistor provided on a negative pole side of said poser source, said resistor having a resistance value set at a level to allow said light emitting diode and said miniature incandescent bulb to be lighted with a high intensity when said push switch is closed and to allow said light emitting diode alone to issue dim light when said push switch is opened.

REFERENCES:
patent: 4071805 (1978-01-01), Brock
patent: 5903104 (1999-05-01), Kojima
patent: 5998928 (1999-12-01), Hipp
patent: 6329755 (2001-12-01), Nakade et al.
patent: 6621224 (2003-09-01), Umezawa et al.
patent: 7180247 (2007-02-01), Kawarazaki
patent: 3660267 (2002-10-01), None

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