A lighting device of an automotive light comprising light sources supplied by a drive current and a control device comprising a control stage generating a control signal on the basis of the difference between the drive current and a predetermined reference current, and a driving stage, which adjust the drive current on the basis of the control signal. The driving stage comprises a voltage stabilizing device, which supplies, in a first operation condition, a stabilized voltage on an intermediate node thereof, a first transistor having a control terminal receiving the control signal; and a second transistor having a control terminal connected to the intermediate node to be set, in the first operation condition, to the predetermined stabilized voltage), a first terminal connected to the light source, and a second terminal connected to a second terminal of the first transistor.
Lighting device and automotive light comprising said lighting device
06.06.2017
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 |
Lighting Device and Automotive Light Comprising Said Lighting Device
Europäisches Patentamt | 2016
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