Light-emitting element driving device, light-emitting device, and vehicle
AssigneeRohm Co., Ltd.
InventorShinsuke TAKAGIMOTO
Life of this patent
Estimating the term…
Abstract
A light emitting drive device has an output voltage supply unit, and an emergency drive unit. The output voltage supply unit generates an output voltage from an input voltage on the basis of a control signal transmitted from a control unit, and supplies at least one light emitting element with the output voltage. In the cases where the emergency drive unit received a signal indicating abnormality of the control unit, the emergency drive unit lights the whole or a part of the at least one light emitting element irrespective of the control signal transmitted from the control unit.
Claims11
A light-emitting element driving device comprising:
- an output voltage feeder configured to generate an output voltage from an input voltage based on a control signal from a controller to feed the output voltage to at least one light-emitting element;
- and
- an emergency driver configured to turn ON all or part of the at least one light-emitting element irrespective of the control signal from the controller on receiving a signal indicating a fault in the controller.
Dependencies are inferred from the claim text.