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:
Dec. 01, 2015
Filed:
Dec. 27, 2011
Applicants:
Toshiaki Kurachi, Kyoto, JP;
Kazuo Gouda, Kagawa, JP;
Inventors:
Toshiaki Kurachi, Kyoto, JP;
Kazuo Gouda, Kagawa, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 13/46 (2006.01); H05B 33/08 (2006.01); F21V 17/10 (2006.01); F21K 99/00 (2010.01); F21Y 101/02 (2006.01); F21V 3/04 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0878 (2013.01); F21V 17/10 (2013.01); H05B 33/0815 (2013.01); H05B 33/0824 (2013.01); F21K 9/1375 (2013.01); F21V 3/0409 (2013.01); F21V 3/0418 (2013.01); F21V 3/0436 (2013.01); F21Y 2101/02 (2013.01);
Abstract
A light-emitting diode driver circuit and an LED light source which are capable of reliably turning OFF an LED even when an input voltage having a value smaller than a predetermined value is supplied. A light-emitting diode driver circuit for turning ON an LED includes: an inverter which outputs electric power for driving the LED; and an inverter control circuit which controls an operation of the inverter, and when a DC voltage applied to the inverter control circuit has a value smaller than the predetermined value, the inverter control circuit stops the operation of the inverter.