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:
Jan. 06, 2015
Filed:
Dec. 28, 2012
Applicant:
Toshiba Lighting & Technology Corporation, Kanagawa, JP;
Inventors:
Hirokazu Otake, Kanagawa, JP;
Fumihiko Nagasaki, Kanagawa, JP;
Takuro Hiramatsu, Kanagawa, JP;
Katsuya Ooto, Tokyo, JP;
Assignee:
Toshiba Lighting & Technology Corporation, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01); H05B 39/02 (2006.01); H05B 39/04 (2006.01); H05B 41/36 (2006.01); H05B 33/08 (2006.01);
U.S. Cl.
CPC ...
H05B 37/02 (2013.01); H05B 33/0818 (2013.01);
Abstract
A luminaire according to one embodiment includes a DC power supply circuit, a switching power supply, and a lighting load. The DC power supply circuit converts an AC voltage controlled in phase to a DC voltage. The switching power supply is connected to the DC power supply circuit, and is controlled so that an input current becomes a constant current. The lighting load is connected as a load circuit of the switching power supply.