Lighting control apparatus of vehicle-purpose lighting device

Details Lighting control apparatus of vehicle-purpose lighting device Lighting control apparatus of vehicle-purpose lighting device

2006-07-19

2010-11-02

Vo, Tuyet Thi (Department: 2821)

Electric lamp and discharge devices: systems

Special application

Vehicle

C315S309000, C315S247000, C315S312000, C315S18500S

Reexamination Certificate

active

07825599

ABSTRACT:
A lighting control apparatus of a vehicle-purpose lighting device can contribute power saving effect, and prevention of a deterioration of a semiconductor light source, and also, can maintain driving safety characteristics. When an input terminal becomes a low level while a vehicle is stopped, a PNP transistor is turned ON, so that a source current I1flows through a current detecting terminal; a switching regulator lights an LED under beam attenuating operation of 70% in accordance with a light emitting degree capable of satisfying a luminous intensity distribution defined in a law; when an upper beam is lighted, the input terminal becomes a low level; a PNP transistor is turned ON; a source current I2flows through the current detecting terminal, so that the light emitting degree of the LED is further decreased, and thus, the switching regulator lights the LED under beam attenuating operation of 50%.

REFERENCES:
patent: 6443602 (2002-09-01), Tanabe et al.
patent: 7012384 (2006-03-01), Tatewaki et al.
patent: 2001/0012206 (2001-08-01), Hayami et al.
patent: 2005/0047831 (2005-03-01), Chang et al.
patent: 2005/0094414 (2005-05-01), Ishida et al.
patent: 4-123942 (1992-04-01), None
patent: 2004-276737 (2004-10-01), None
Japanese Office Action for patent application No. 2005-209626, mailed Nov. 18, 2009, and English translation thereof, 6 pages.
English abstract from esp@cenet.com for patent application with Publication No. JP4123942, Publication Date: Apr. 23, 1992, 1 page.

Affiliated with

Also associated with

Rating

Lighting control apparatus of vehicle-purpose lighting device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lighting control apparatus of vehicle-purpose lighting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lighting control apparatus of vehicle-purpose lighting device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4227048