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:
Oct. 23, 2018
Filed:
Mar. 12, 2018
Applicant:
Koito Manufacturing Co., Ltd., Tokyo, JP;
Inventor:
Kotaro Matsui, Shizuoka, JP;
Assignee:
Koito Manufacturing Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 33/08 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0842 (2013.01); H05B 33/083 (2013.01); H05B 33/089 (2013.01);
Abstract
A drive circuit supplies a drive current to a second light source. A dummy load circuit is connected to a control line to which a lighting control signal, which instructs the second light sourceto be turned on and off, is input, and the dummy load circuit sinks a dummy load current Iwhich decreases as a temperature increases.