In a load control unit, three R, G, and B LED chips that constitute each light source (33a-33d) of reading lamps (25-31) and a connector (35) with a built-in controller are mounted on a circuit board (37) to thereby eliminate the connection of a controller (35b) built into the connector (35) with the built-in controller and the respective light sources (33a-33d) by signal lines. In addition, the controller (35b) and a lighting ECU (43) are connected by a multiplex communication line (39), and the multiplex communication line (39) is routed in pillars (15, 17) of a vehicle (1). Consequently, the number of wires can be reduced compared with when individual wires connected to the respective light sources (33a-33d) are passed through the pillars (15, 17), and thereby making it possible to effectively use limited spaces within the pillars (15, 17) through which many other wires are passed.
LOAD CONTROL UNIT
2015-10-01
Patent
Electronic Resource
English
IPC: | B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / H05B ELECTRIC HEATING , Elektrische Heizung |
SAE Technical Papers | 1980
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