Title:
LIGHT-EMITTING DIODE ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/208839
Kind Code:
A1
Abstract:
Disclosed is a light-emitting diode illumination device, comprising: a first LED light source and a second LED light source which are included in a first light source group; a third LED light source and a fourth LED light source which are included in a second light source group; a mode detection circuit for determining a mode; a current control unit for series and parallel connections of the first light source group and the second light source group; balancing circuits for series and parallel connections for each light source group; and a current path providing circuit for providing a current path, wherein the light-emitting diode illumination device emits light in various states according to a change in rectified voltage and a mode change.
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Inventors:
MUN GYEONG SIK (KR)
KWON KI SOO (KR)
LEE SANG YOUNG (KR)
AN KI CHUL (KR)
KWON KI SOO (KR)
LEE SANG YOUNG (KR)
AN KI CHUL (KR)
Application Number:
PCT/KR2018/004678
Publication Date:
October 31, 2019
Filing Date:
April 23, 2018
Export Citation:
Assignee:
SILICON WORKS CO LTD (KR)
International Classes:
H05B44/00; H02M1/12
Foreign References:
KR20160096524A | 2016-08-16 | |||
KR101582450B1 | 2016-01-21 | |||
KR101825213B1 | 2018-03-22 | |||
KR20160116527A | 2016-10-10 | |||
KR101110380B1 | 2012-02-24 |
Attorney, Agent or Firm:
LEE, Cheol Hee (KR)
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