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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.:

US 9488355 B1

PDFFull Text
Date of Patent:
Nov. 08, 2016

Filed:

Jun. 04, 2015

Led lamp

Applicant:

Rohm Co., Ltd., Kyoto-shi, Kyoto, JP;

Inventors:

Masaru Igaki, Kyoto, JP;

Masahide Tanaka, Toyonaka, JP;

Assignee:

ROHM CO., LTD., Kyoto, JP;

Attorney:

Hamre, Schumann, Mueller & Larson, P.C.

Primary Examiner:

Douglas W Owens

Assistant Examiner:

James H Cho

Int. Cl.
CPC ...
F21V 23/04 (2006.01); H05B 33/08 (2006.01); F21K 99/00 (2016.01); H05B 37/02 (2006.01); F21S 8/02 (2006.01); F21S 8/04 (2006.01); F21Y 101/02 (2006.01); F21Y 103/00 (2016.01); F21Y 103/02 (2006.01);
U.S. Cl.
CPC ...
F21V 23/0471 (2013.01); F21K 9/175 (2013.01); F21V 23/0464 (2013.01); H05B 33/0803 (2013.01); H05B 33/0854 (2013.01); H05B 37/0218 (2013.01); H05B 37/0227 (2013.01); F21S 8/026 (2013.01); F21S 8/04 (2013.01); F21Y 2101/02 (2013.01); F21Y 2103/003 (2013.01); F21Y 2103/02 (2013.01); Y02B 20/383 (2013.01); Y02B 20/46 (2013.01);
Abstract

An LED lamp () is employed in a state mounted on a lighting fixture. The LED lamp () includes an LED source portion () including a plurality of LED chips, an illuminance sensor module () detecting ambient illuminance, and a controller controlling the LED source portion () in response to illuminance of ambient light other than light emitted by the LED source portion () on the basis of an output signal received from the illuminance sensor module () when the LED source portion () is in a lighting-up state. When the LED source portion () is in the lighting-up state, there is a possibility that the illuminance sensor module () detects not only the ambient light illuminance but also spontaneous light illuminance. The controller eliminates influence by the spontaneous light illuminance, and controls the LED source portion () in response to the illuminance of the ambient light.

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