Title:
LIGHTING FIXTURE FOR VEHICLE
Document Type and Number:
Japanese Patent JP2019192461
Kind Code:
A
Abstract:
To provide a lighting fixture for vehicle capable of lighting multiple light sources simultaneously by using one constant current supply.SOLUTION: A lighting fixture 1 for vehicle has a power supply circuit 40 outputting a constant current, a main light source 11 for connection with the power supply circuit 40, a first sub-light source 12, a second sub-light source 13 and a resistor 20 connected, respectively, in series with the main light source 11 and connected in parallel with each other, three switching elements 51-53 for switching the state where currents flow therethrough and the state where currents do not flow therethrough, and a SW control circuit 50 for controlling the three switching elements 51-53. The SW control circuit 50 performs PWM control of the period when currents flow, respectively, to the first and second sub-light sources 12, 13 and lights the first and second sub-light sources 12, 13, and feeds a current to the resistor 20 when the current does not flow entirely to the first and second sub-light sources 12, 13.SELECTED DRAWING: Figure 1
Inventors:
MIURA KAZUTO
Application Number:
JP2018083177A
Publication Date:
October 31, 2019
Filing Date:
April 24, 2018
Export Citation:
Assignee:
ICHIKOH INDUSTRIES LTD
International Classes:
H05B37/02; B60Q1/00
Domestic Patent References:
| JP2014078421A | 2014-05-01 | |||
| JP2007265806A | 2007-10-11 |
Foreign References:
| US20180049286A1 | 2018-02-15 |
Attorney, Agent or Firm:
Nobuo Nakamura
Shoichi Masuka
Shoichi Masuka