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Patent Searching and Data


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.

Inventors:
MUN, Gyeong Sik (222 Techno2-ro, Yuseong-gu, Daejeon, 34027, KR)
KWON, Ki Soo (222 Techno2-ro, Yuseong-gu, Daejeon, 34027, KR)
LEE, Sang Young (222 Techno2-ro, Yuseong-gu, Daejeon, 34027, KR)
AN, Ki Chul (222 Techno2-ro, Yuseong-gu, Daejeon, 34027, KR)
Application Number:
KR2018/004678
Publication Date:
October 31, 2019
Filing Date:
April 23, 2018
Export Citation:
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Assignee:
SILICON WORKS CO., LTD. (222 Techno2-ro, Yuseong-gu, Daejeon, 34027, KR)
International Classes:
H05B33/08; H02M1/12
Foreign References:
KR20160096524A2016-08-16
KR101582450B12016-01-21
KR101825213B12018-03-22
KR20160116527A2016-10-10
KR101110380B12012-02-24
Attorney, Agent or Firm:
LEE, Cheol Hee (8 Samsung-ro 100gil, Gangnam-gu, Seoul, 06167, KR)
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