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, 2006
Filed:
Jan. 21, 2005
Fuminori Shiotsu, Shizuoka, JP;
Masayasu Ito, Shizuoka, JP;
Toshiyuki Tsuchiya, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A lighting device for a vehicle comprises: a plurality of light source sections connected in parallel with each other; and a transformer for supplying an electric power to the plurality of light source sections. The transformer includes a primary coil and a plurality of secondary coils provided corresponding to the plurality of light source sections, for respectively supplying electric power to the corresponding light source sections. One end of each light source section is grounded and a semiconductor light emitting element is provided between one end and the other end of the light source section. The lighting device further comprises: a voltage detecting section for detecting voltages at the other ends of the plurality of light sources; and an output control section for controlling an electric current outputted from the transformer according to the voltage detected by the voltage detecting section.