LED lamp

Patent metadata

Field	Value
Publication number	US-9488355-B2
Application number	US-201514730941-A
Country	US
Kind code	B2
Filing date	Jun 4, 2015
Priority date	Apr 22, 2011
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

An LED lamp ( 1 ) is employed in a state mounted on a lighting fixture. The LED lamp ( 1 ) includes an LED source portion ( 2 ) including a plurality of LED chips, an illuminance sensor module ( 12 ) detecting ambient illuminance, and a controller controlling the LED source portion ( 2 ) in response to illuminance of ambient light other than light emitted by the LED source portion ( 2 ) on the basis of an output signal received from the illuminance sensor module ( 12 ) when the LED source portion ( 2 ) is in a lighting-up state. When the LED source portion ( 2 ) is in the lighting-up state, there is a possibility that the illuminance sensor module ( 12 ) 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 ( 2 ) in response to the illuminance of the ambient light.

First claim

What is claimed is:

1. A straight LED lamp, comprising:
a substrate including two opposed first sides and a second side as an end portion of the first side, wherein the second side is shorter than the first side;
an LED chip group including a plurality of LED chips disposed on a front surface of the substrate at least along an extension direction of the first side;
a case covering the substrate and the LED chip group and being able to transmit light emitted from the LED chip g…

Assignees

• Rohm Co Ltd

Inventors

• Igaki Masaru
• Tanaka Masahide

Classifications

• F21S8/026

  Mechanical Engineering · mapped topic

• F21K9/278

  Mechanical Engineering · mapped topic

• F21Y2103/30

  Mechanical Engineering · mapped topic

• F21V23/0471 Primary

  Mechanical Engineering · mapped topic

• F21V23/0464

  Mechanical Engineering · mapped topic