A linear regulator (40) supplies a first drive current (I1) to a first light source (24) in a first period in which the first light source (24) is turned on and a second light source (25) is not turned on, and in a second period in which the first light source (24) and the second light source (25) are turned on, and stops the supply of the first drive current (I1) in a third period in which the first light source (24) and the second light source (25) are turned off. A switching regulator (41) supplies a second drive current (I2) to the second light source (25) in the second period, and stops the supply of the second drive current (I2) in the third period.
LIGHTING CIRCUIT AND VEHICULAR DIRECTION INDICATOR LAMP
2023-02-09
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 |
Lighting circuit and direction indicator lamp for vehicle
European Patent Office | 2022
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