A vehicle lamp using a control apparatus for controlling on-off states of a light source having a plurality of light-emitting chips connected in series, can include switching devices each connected in parallel with a respective one of the light-emitting chips, a control circuit controlling each of on-off actions of the switching devices, and a current supply unit. The control apparatus can control the light-emitting chips so as not to exceed a supply capability the current supply unit applying a driving current to the light-emitting chips, and also can allow the switching devices to decrease than the number of the light-emitting chips. The vehicle lamp can include a system controller to appropriately control the control apparatus. Thus, the present invention can provide the vehicle lamp using the control apparatus, which can provide preferable light distribution patterns with reliability and a simple structure as usage of the vehicle lamp.
CONTROL APPARATUS OF LIGHT SOURCE AND VEHICLE LAMP USING THE SAME
2019-03-21
Patent
Electronic Resource
English
IPC: | F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen / 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 |
Light source control apparatus, vehicle including same, and lamp
European Patent Office | 2022
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