Lighting controller of lighting device for vehicle

Details Lighting controller of lighting device for vehicle Lighting controller of lighting device for vehicle

2011-06-21

2011-06-21

Tran, Thuy Vinh (Department: 2821)

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

C315S219000, C315S224000, C315S308000

Reexamination Certificate

active

07964988

ABSTRACT:
A lighting controller of a lighting device for a vehicle includes a switching regulator for supplying a driving current to first to Nth (N is an integer of one or more) semiconductor light sources; first to Nth current driving portions; and a control portion. The first to Nth current driving portions include first to Nth current detecting portions connected in series to the semiconductor light sources and serving to detect the driving current respectively, first to Nth switching portions connected to positive electrode sides of the semiconductor light sources respectively, and first to Nth comparing portions for transmitting a comparing output corresponding to a result of a comparison, which is obtained by comparing values of the driving currents detected by the current detecting portions with a predetermined threshold respectively. The first to Nth current driving portions serve to carry out operations of the switching portions corresponding to the comparing output respectively. The control portion includes first to Nth first voltage drop detecting portions for detecting voltages on output sides of the comparing portions and transmitting first to Nth first detection results, and first to Nth second voltage drop detecting portions for detecting voltages on positive electrode sides of the semiconductor light sources and transmitting first to Nth second detection results respectively. The control portion controls the first to Nth current driving portions corresponding to the first to Nth first detection results and the first to Nth second detection results respectively.

REFERENCES:
patent: 6225912 (2001-05-01), Tanaka et al.
patent: 6844681 (2005-01-01), Serizawa et al.
patent: 7327051 (2008-02-01), Ito et al.
patent: 7482765 (2009-01-01), Ito et al.
patent: 7750579 (2010-07-01), Aiello
patent: 2005/0179393 (2005-08-01), Murakami et al.
patent: 2006/0082332 (2006-04-01), Ito et al.
patent: 2007/0013321 (2007-01-01), Ito et al.
patent: 10 2004 045 435 (2006-03-01), None
patent: 2006-103477 (2006-04-01), None
European Search Report issued in European Application No. EP 08 02 1810 dated Mar. 20, 2009, 8 pages.
Communication pursuant to Article 94(3) EPC issued in European Application No. 08 021 810.0-2206 dated Oct. 27, 2009, 5 pages.

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