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:
Sep. 12, 2017
Filed:
Nov. 18, 2015
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Masato Himeda, Nara, JP;
Hiroyuki Asano, Nara, JP;
Masafumi Yamamoto, Kyoto, JP;
Takeshi Kamoi, Kyoto, JP;
Daisuke Yamahara, Osaka, JP;
Keisuke Seki, Osaka, JP;
Katsuyuki Doi, Osaka, JP;
Abstract
A lighting device includes a rectifier circuit, a conversion circuit, a constant current circuit and a control circuit. The conversion circuit includes a first series circuit, a second series circuit and a third series circuit. The conversion circuit is configured to output a DC current by on/off of a switching element being controlled by the control circuit. A high potential-side terminal of the third capacitor is electrically connected to an output terminal. The low potential-side terminal of the third capacitor is electrically connected to an output terminal, via the constant current circuit.