A lighting circuit for blinking a light-emitting unit having plural light sources is equipped with an abnormality detection unit which generates abnormality information when detecting an abnormality in even one of the plural light sources, and a holding circuit which holds the abnormality information during a period when the lighting circuit is supplied with a blinking signal, The lighting circuit supplies a drive current(s) to the plural light sources according to the blinking signal and stops supplying a drive current(s) to all of the plural light sources according to the abnormality information being held by the holding circuit.
LIGHTING CIRCUIT AND VEHICULAR TURN SIGNAL LAMP
2017-06-29
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 |
European Patent Office | 2016
|