Title:
LIGHT SOURCE DRIVING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/119306
Kind Code:
A1
Abstract:
A light source driving apparatus according to an embodiment comprises: a light source unit; a constant current driving unit which is connected to the light source unit and includes a first switching element to supply a constant current to the light source unit according to a switching operation of the first switching element; a driving control unit which outputs a switching signal for controlling the first switching element in the constant current driving unit; an abnormal state sensing unit which senses an abnormal state of the light source unit and an abnormal state of the driving control unit, and outputs a control signal according to the sensing result; and a protection circuit unit which selectively operates based on the control signal output from the abnormal state sensing unit, to stop the operations of the constant current driving unit and the light source unit.
Inventors:
JUNG SEUNG TAE (KR)
HAN JAE HYUN (KR)
HAN JAE HYUN (KR)
Application Number:
PCT/KR2021/017984
Publication Date:
June 09, 2022
Filing Date:
December 01, 2021
Export Citation:
Assignee:
LG INNOTEK CO LTD (KR)
International Classes:
H05B45/50; H05B45/30; H05B45/345; H05B47/20
Foreign References:
| KR20160124587A | 2016-10-28 | |||
| KR102165446B1 | 2020-10-14 | |||
| KR20160126526A | 2016-11-02 | |||
| KR20120118992A | 2012-10-30 | |||
| KR101003072B1 | 2010-12-21 |
Attorney, Agent or Firm:
HAW, Yong Noke (KR)
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