EMERGENCY ILLUMINATION LIGHTING CIRCUIT, EMERGENCY ILLUMINATION LIGHTING DEVICE, AND EMERGENCY LIGHTING SYSTEM

摘要

PROBLEM TO BE SOLVED: To conduct checking without rush current into an electrolytic capacitor. SOLUTION: In checking, oscillation of an oscillation circuit 9 in a daily use switching power source part 2 is stopped based on the operation of a checking operation part 17 to form the same state as in a power failure, and a power source to an inverter lighting circuit 3 is switched to a storage battery 11 for checking. Checking is conducted without making the charge in of an electrolytic capacitor C0 zero by on/off operation of a power source line, rush current does not flow into the checking part 17, and the electrolytic capacitor with small rated capacitance and small size can be used.