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:
Nov. 02, 2010
Filed:
Jul. 19, 2006
Seiichiro Yagi, Shizuoka, JP;
Hiroyuki Ishida, Shizuoka, JP;
Masayasu Ito, Shizuoka, JP;
Yoshihiro Uchiyama, Shizuoka, JP;
Seiichiro Yagi, Shizuoka, JP;
Hiroyuki Ishida, Shizuoka, JP;
Masayasu Ito, Shizuoka, JP;
Yoshihiro Uchiyama, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A lighting control apparatus of a vehicle-purpose lighting device can contribute power saving effect, and prevention of a deterioration of a semiconductor light source, and also, can maintain driving safety characteristics. When an input terminal becomes a low level while a vehicle is stopped, a PNP transistor is turned ON, so that a source current Iflows through a current detecting terminal; a switching regulator lights an LED under beam attenuating operation of 70% in accordance with a light emitting degree capable of satisfying a luminous intensity distribution defined in a law; when an upper beam is lighted, the input terminal becomes a low level; a PNP transistor is turned ON; a source current Iflows through the current detecting terminal, so that the light emitting degree of the LED is further decreased, and thus, the switching regulator lights the LED under beam attenuating operation of 50%.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile