Emergency light control circuit, emergency light control device and lighting equipment

摘要

PROBLEM TO BE SOLVED: To provide an emergency light control circuit, an emergency light control device and a lighting fixture. An emergency light control circuit includes a firefly switch, a rectifying circuit, a main power circuit, an energy storage power supply, a battery management circuit and an emergency circuit, the firefly switch is used for connecting to a commercial power supply, and the rectifying circuit is used. , Connected to a firefly switch and used to convert commercial power to a DC voltage signal, the mains circuit is connected to a rectifier circuit to generate a light source drive signal based on the DC voltage signal and the operating state of the main light source. Used to control and generate a charging voltage signal, the energy storage power supply is charged by the battery management circuit, and the emergency circuit is the impedance between the voltage line and the neutral line of the commercial power supply and the firefly switch. It is used to detect the output current, thereby generating an emergency drive signal and controlling the operating state of the emergency light source. [Selection diagram] Fig. 1