The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 13, 2018
Filed:
Jul. 08, 2013
Applicant:
Seoul Semiconductor Co., Ltd., Ansan-si, KR;
Inventors:
Chung Hoon Lee, Ansan-si, KR;
Keon Young Lee, Ansan-si, KR;
Assignee:
Seoul Semiconductor Co., Ltd., Ansan-si, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 37/00 (2006.01); H05B 39/00 (2006.01); H05B 41/00 (2006.01); H05B 33/08 (2006.01); F21Y 101/00 (2016.01); F21Y 115/10 (2016.01);
U.S. Cl.
CPC ...
H05B 33/0809 (2013.01); H05B 33/083 (2013.01); H05B 33/0815 (2013.01); F21Y 2101/00 (2013.01); F21Y 2115/10 (2016.08); H05B 33/08 (2013.01); H05B 33/0845 (2013.01);
Abstract
A lighting apparatus using light emitting diodes is disclosed. A plurality of light-emitting groups are connected to each other in series at an output terminal of a rectification unit. Current diodes as current sources are branched from a node between the light-emitting groups. Current values set in the current diodes are set according to the amount of current flowing into the light-emitting groups. Therethrough, the amount of current flowing in each light-emitting group can be determined.