Title:
VEHICLE LAMP AND LIGHTING CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2020/184576
Kind Code:
A1
Abstract:
A semiconductor light source (210) and a constant current circuit (220) of the present invention are arranged in series between an input terminal (IN) and a ground terminal (GND). When an input voltage (VIN) at the input terminal (IN) exceeds a predetermined threshold voltage (VTH), a load dump circuit (230) cuts off or reduces a current (ILED) flowing through the constant current circuit (220).
Inventors:
ICHIKAWA TOMOYUKI (JP)
SUZUKI TETSUYA (JP)
OZAWA ATSUSHI (JP)
ITO TORU (JP)
SUZUKI TETSUYA (JP)
OZAWA ATSUSHI (JP)
ITO TORU (JP)
Application Number:
PCT/JP2020/010361
Publication Date:
September 17, 2020
Filing Date:
March 10, 2020
Export Citation:
Assignee:
KOITO MFG CO LTD (JP)
International Classes:
B60Q1/00; H05B45/345
Foreign References:
| JP2014241202A | 2014-12-25 | |||
| JP2012028167A | 2012-02-09 | |||
| JP2004063084A | 2004-02-26 | |||
| JP2004122912A | 2004-04-22 | |||
| JP2016197711A | 2016-11-24 |
Other References:
See also references of EP 3932738A4
Attorney, Agent or Firm:
MORISHITA Sakaki (JP)
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