Title:
点灯装置および照明器具
Document Type and Number:
Japanese Patent JP6972634
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a lighting device and a lighting fixture capable of stably operating a load circuit concerning the lighting device and the lighting fixture.SOLUTION: A lighting device includes: a booster circuit for boosting an input voltage; a load circuit which receives power supply from the booster circuit and lights a light source; a load control circuit for controlling the load circuit; a boost detection circuit for detecting an output voltage of the booster circuit; and a feedback circuit for controlling the load control circuit so as to lower output power of the load circuit when the detection voltage of the boost detection circuit falls below a first reference voltage.SELECTED DRAWING: Figure 1
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Inventors:
Takamoto Kisho
Yasuo Matsumoto
Yasuo Matsumoto
Application Number:
JP2017082896A
Publication Date:
November 24, 2021
Filing Date:
April 19, 2017
Export Citation:
Assignee:
Mitsubishi Electric Corporation
Mitsubishi Electric Lighting Co., Ltd.
Mitsubishi Electric Lighting Co., Ltd.
International Classes:
H05B45/38
Domestic Patent References:
| JP2014158329A | ||||
| JP2011176911A | ||||
| JP2013033644A |
Attorney, Agent or Firm:
Mamoru Takada
Hideki Takahashi
Jiro Ozawa
Hideki Takahashi
Jiro Ozawa