An automotive lamp with a lighting device is provided that includes a LED lighting circuit designed to generate a luminous flux on the basis of a driving current, a controlling electrical circuit which provides the driving current on the basis of a reference electrical quantity and of a sensed electrical quantity, and a compensating electrical circuit, which is configured so as to vary the reference electrical quantity by way of a compensation function of the luminous flux predetermined, on the basis of the temperature of the LED lighting circuit. The compensating electrical circuit includes a resistive conditioning electrical device that conditions the compensation function of the luminous flux so as to vary the reference electrical quantity in a predetermined way in response to a change in temperature.
Automotive lamp comprising a LED lighting device
2017-07-18
Patent
Electronic Resource
English
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 / G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES , Systeme zum Regeln elektrischer oder magnetischer Veränderlicher |