An automotive lamp includes a temperature-sensing element having an electrical state that changes according to the temperature T of a semiconductor light source, and a constant current driver that generates a driving current ILED that corresponds to the temperature T. The maximum value of the temperature differential of the driving current ILED in a first temperature range from a reference temperature T0 to a first temperature T1 (T1 > T0) is smaller than the maximum value of the temperature differential of the driving current ILED in a second temperature range from the first temperature T1 to a second temperature T2 (T2 > T1).
IGNITION CIRCUIT AND VEHICLE LAMP
ZÜNDSCHALTUNG UND FAHRZEUGLEUCHTE
CIRCUIT D'ALLUMAGE ET PHARE DE VÉHICULE
07.06.2023
Patent
Elektronische Ressource
Englisch
IPC: | F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES / 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 |
Europäisches Patentamt | 2016
|Europäisches Patentamt | 2016
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