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:
Jun. 09, 2020
Filed:
Feb. 15, 2018
Applicant:
Koito Manufacturing Co., Ltd., Tokyo, JP;
Inventors:
Hiroki Shibata, Shizuoka, JP;
Kunio Fujita, Shizuoka, JP;
Masaya Fujiwara, Shizuoka, JP;
Ryo Iwaki, Shizuoka, JP;
Assignee:
KOITO MANUFACTURING CO., LTD., Minato-ku, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21S 45/40 (2018.01); F21V 29/10 (2015.01); F21Y 115/10 (2016.01); F21S 41/30 (2018.01);
U.S. Cl.
CPC ...
F21S 45/40 (2018.01); F21V 29/10 (2015.01); F21S 41/30 (2018.01); F21Y 2115/10 (2016.08);
Abstract
In a lighting device adapted to be mounted on a vehicle, a PTC (positive temperature coefficient) thermistor (), a first fixed resistor (R), and a first light emitting element () are connected in series with a voltage source. A heat conduction suppressor () is configured to suppress heat conduction from the first fixed resistor (R) to the PTC thermistor ().