Title:
LED LIGHTING DEVICE AND METHOD FOR CONTROLLING LED LIGHTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/085778
Kind Code:
A1
Abstract:
Provided is an LED lighting device comprising: a detection circuit for detecting, at a pre-set period, a voltage between a second junction and a power source terminal to which a positive pole of a battery is connected, and outputting, from a first detection node, a first detection signal corresponding to the detection result; a first LED lamp a cathode side of which is connected to ground and an anode side of which is connected to a first LED terminal; a drive voltage generation circuit for generating a drive voltage for driving the first LED lamp from a power source voltage of the power source terminal, and outputting the drive voltage from an output unit; a comparison circuit for comparing a first detection voltage based on the first detection signal, and a reference voltage, and outputting a first comparison result signal based on the comparison result; and a drive circuit for controlling the supply of the drive voltage to the first LED lamp in accordance with the first comparison result signal.
Inventors:
OHKI ISAO (JP)
Application Number:
PCT/JP2015/082200
Publication Date:
May 26, 2017
Filing Date:
November 17, 2015
Export Citation:
Assignee:
SHINDENGEN ELECTRIC MFG (JP)
International Classes:
B60Q1/00; H05B37/02
Domestic Patent References:
| WO2015151204A1 | 2015-10-08 |
Foreign References:
| JP2015116892A | 2015-06-25 | |||
| JP2012011970A | 2012-01-19 | |||
| JP2014069740A | 2014-04-21 | |||
| JP2013033610A | 2013-02-14 |
Attorney, Agent or Firm:
KATSUNUMA Hirohito et al. (JP)
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