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. 15, 2022
Filed:
Feb. 13, 2020
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Yoshiro Ichihara, Yokohama, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/225 (2006.01); G03B 15/05 (2021.01); H05K 7/20 (2006.01);
U.S. Cl.
CPC ...
G03B 15/05 (2013.01); H04N 5/2256 (2013.01); H05K 7/20172 (2013.01); H05K 7/20209 (2013.01); G03B 2215/0503 (2013.01);
Abstract
A lighting device capable of suppressing an excessive temperature rise of a light emission section even when a fan is incapable of normal rotation. The light emission section emits light for illuminating an object. The fan cools the light emission section. A motor driving section drives the fan for rotation. A strobe microcomputer determines whether or not the motor driving section is abnormal, and controls a light emission interval of the light emission section in continuous light emission, based a result of the determination.