Title:
VEHICULAR LED LIGHTING CONTROL CIRCUIT, VEHICULAR LED LIGHTING CONTROL DEVICE, AND METHOD FOR CONTROLLING VEHICULAR LED LIGHTING CONTROL CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2019/163077
Kind Code:
A1
Abstract:
This vehicular LED lighting control circuit is provided with: a first adjustment resistor having one end connected to the cathode-side of an LED lamp; a second adjustment resistor having one end connected to the other end of the first adjustment resistor and having the other end connected to a second wire; an adjustment bipolar transistor having one end connected to the one end of the first adjustment resistor and having the other end connected to the other end of the first adjustment resistor; a limiting transistor having one end connected to the anode-side of the LED lamp and having the other end connected to a control terminal of the adjustment bipolar transistor; and a reference voltage generation circuit having one end connected to the control terminal of the adjustment bipolar transistor and having the other end connected to the other end of the second adjustment resistor, the reference voltage generation circuit applying a reference voltage between the control terminal of the adjustment bipolar transistor and the other end of the second adjustment resistor.
Inventors:
TAKASHIMA TOYOTAKA (JP)
Application Number:
PCT/JP2018/006640
Publication Date:
August 29, 2019
Filing Date:
February 23, 2018
Export Citation:
Assignee:
SHINDENGEN ELECTRIC MFG (JP)
International Classes:
H05B37/02
Domestic Patent References:
| WO2014171015A1 | 2014-10-23 |
Foreign References:
| JP2009134933A | 2009-06-18 | |||
| JP2012028167A | 2012-02-09 | |||
| JP2013080702A | 2013-05-02 | |||
| JP2009048857A | 2009-03-05 | |||
| JP2013187188A | 2013-09-19 | |||
| JP2016100325A | 2016-05-30 |
Attorney, Agent or Firm:
NAGAI Hiroshi et al. (JP)
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