Lighting controlling device of vehicle lighting equipment

Details Lighting controlling device of vehicle lighting equipment Lighting controlling device of vehicle lighting equipment

2011-02-01

2011-02-01

Vo, Tuyet Thi (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

With power factor control device

C315S291000, C315S18500S, C315S224000, C315S312000

Reexamination Certificate

active

07880401

ABSTRACT:
A lighting controlling device of vehicle lighting equipment includes switching regulators for supplying a current to a plurality of semiconductor light sources respectively; a plurality of current driving portions, having switching elements connected to the semiconductor light sources for controlling ON/OFF of the semiconductor light sources, for current-driving the semiconductor light sources at a maximum current value or a current value smaller than the maximum current value in response to respective operating states of the switching elements; current setting portion for setting a maximum current value applied in current-driving the current driving portion or a maximum current value of currents fed from the switching regulators to the semiconductor light sources separately in plural stages in response to respective assignments; and a controlling portion for controlling the current driving portion and the current setting portion in response to a plurality of lighting modes based on communication information from an external device. The controlling portion assigns the maximum current value corresponding to each lighting mode to the current setting portion for every lighting mode, and assigns ON/OFF periods of the switching elements to the current driving portion for every lighting mode.

REFERENCES:
patent: 2002/0130628 (2002-09-01), Shin
patent: 2007/0069664 (2007-03-01), Robinson et al.
patent: 2008/0088571 (2008-04-01), Lee et al.
patent: 2009/0021384 (2009-01-01), Jacubovski et al.
patent: 2009/0066262 (2009-03-01), Tateishi et al.
patent: 2009/0080174 (2009-03-01), Shimotomai et al.
patent: 2006-103477 (2006-04-01), None

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