Title:
点灯回路および車両用灯具
Document Type and Number:
Japanese Patent JP6820779
Kind Code:
B2
Abstract:
A drive circuit supplies a drive current to a second light source. A dummy load circuit is connected to a control line to which a lighting control signal, which instructs the second light source 304 to be turned on and off, is input, and the dummy load circuit sinks a dummy load current IDUMMYLOAD which decreases as a temperature increases.
More Like This:
| WO/2013/088312 | METHODS AND APPARATUS FOR SENSING LIGHT OUTPUT AND CONTROLLING LIGHT OUTPUT |
| WO/2014/095173 | DEVICE FOR CONTROLLING A FIELD EFFECT TRANSISTOR |
| WO/2018/091900 | LED RETROFIT LIGHTING UNIT |
Inventors:
Kotaro Matsui
Application Number:
JP2017054962A
Publication Date:
January 27, 2021
Filing Date:
March 21, 2017
Export Citation:
Assignee:
Koito Manufacturing Co., Ltd.
International Classes:
H05B44/00; H05B45/10; B60Q1/04
Domestic Patent References:
| JP2015125800A | ||||
| JP2014117051A |
Foreign References:
| US20120068627 |
Attorney, Agent or Firm:
Sakaki Morishita
Yusuke Murata
Tomoyuki Miki
Yusuke Murata
Tomoyuki Miki