Document Type and Number:
Japanese Patent JP5540480
Kind Code:
B2
Abstract:
To provide an in-vehicle lamp control device capable of reducing a weight and man-hour for design, dealing with variations in respective lamps, and equalizing the degree of the brightness of the lamps.
The in-vehicle lamp control device includes a plurality of semiconductor switches SRland SRrthat switch on/off electric powers from a generator 3 and a battery B to a plurality of lamps Lland Lr, respectively, and implements PWM (Pulse Width Modulation) control for power supply to the lamps Lland Lr. This device includes: a plurality of electric power calculating means (1) that calculate the electric powers supplied to the lamps Lland Lr, respectively; and a plurality of means (1) that implement PWM control for respective ON signals to the semiconductor switches SRland SRrso that the electric powers supplied to the lamps Lland Lr, respectively, are equal to predetermined electric powers, based on the electric powers calculated respectively by the electric power calculating means (1) and the predetermined electric powers.
COPYRIGHT: (C)2010,JPO&INPIT
Inventors:
Tsugio Nishimura
Application Number:
JP2008218564A
Publication Date:
July 02, 2014
Filing Date:
August 27, 2008
Assignee:
Auto Network Technologies, Ltd.
SUMITOMO WIRING SYSTEMS,LTD.
Sumitomo Electric Industries, Ltd.
International Classes:
H05B39/04; H05B37/02
Domestic Patent References:
| JP2006131048A | | | | |
| JP2008015923A | | | | |
| JP2281596A | | | | |
| JP2008062712A | | | | |
| JP2008113554A | | | | |
| JP2008105636A | | | | |
| JP2003072456A | | | | |
Attorney, Agent or Firm:
Hideno Kono
Nobuo Kono
