Title:
ＬＥＤモジュール及びＬＥＤ照明装置
Document Type and Number:
Japanese Patent JP6481402
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an LED module configured independently of a lighting device that can achieve abnormality protection of the LED module or the lighting device without requiring a special wire between the lighting device and itself, and that can reduce a loss in an abnormality protection state.SOLUTION: An LED module (1) having first and second terminals (T1 and T2) comprises: an LED (10) and a switching element (20) series-connected between the first terminal and the second terminal; a temperature detection circuit (30) that detects a temperature of the LED module; and a PWM control circuit (40) configured to perform PWM-driving of the switching element in a case where the detection temperature detected by the temperature detection circuit is equal to or more than an abnormality threshold.SELECTED DRAWING: Figure 1
Inventors:
Yamatake
Ryusuke Yamaguchi
Wataru Furumata
Yoshiaki Yamaguchi
Shinichi Suzuki
Ryusuke Yamaguchi
Wataru Furumata
Yoshiaki Yamaguchi
Shinichi Suzuki
Application Number:
JP2015025934A
Publication Date:
March 13, 2019
Filing Date:
February 13, 2015
Export Citation:
Assignee:
Iwasaki Electric Co., Ltd.
International Classes:
H05B37/02
Domestic Patent References:
| JP2009272227A | ||||
| JP2013539165A | ||||
| JP2005274884A |
Attorney, Agent or Firm:
▲濱▼口 岳久