LIGHTING CIRCUIT

摘要

A lighting circuit is configured to supply a driving current to a first light source and a second light source. The light circuit includes a conversion unit which receives a first voltage for the first light source and a second voltage for the second light source via a common input terminal, performs voltage conversion on the first voltage or the second voltage and supplies the driving current, a control unit which controls a current value of the driving current output from the conversion unit, a first switch which selects whether to supply the driving current to the first light source by a first signal based on the first voltage, a signal generation unit which receives the first voltage and the second voltage and generates a second signal, and a second switch which selects whether to supply the driving current to the second light source by the second signal.

主权项

1. A lighting circuit configured to supply a driving current to a first light source and a second light source configured to perform a function different from the first light source, the lighting circuit comprising:
a conversion unit configured to receive a first voltage for the first light source and a second voltage for the second light source via a common input terminal, to perform voltage conversion on the first voltage or the second voltage, and to supply the driving current from an output terminal; a control unit configured to control a current value of the driving current output from the conversion unit; a first switch configured to select whether to supply the driving current to the first light source by a first signal based on the first voltage; a signal generation unit configured to receive the first voltage and the second voltage and to generate a second signal; and a second switch configured to select whether to supply the driving current to the second light source by the second signal.