| 摘要 |
PROBLEM TO BE SOLVED: To provide an emergency lighting system, a secondary battery inspection of which is performed while reducing an effect on a lamp service life. SOLUTION: The emergency lighting system comprises: a secondary battery 2 which supplies an electric power to light sources; a charging circuit 3 which charges the secondary battery 2 from a normal power source 1; a switch element 4 which connects the secondary battery 2 to the light source; and a controller 7 which makes the light sources blink by using the secondary battery 2 as a power source in an emergency, and inspects the secondary battery 2 by supplying an electric power from the secondary battery 2 to the light sources when receiving an inspection signal for inspection of the secondary battery 2. The controller 7 has a control circuit 9 for on/off controlling the switch element 4, a detector 8 for detecting a voltage of the secondary battery 2, and a discriminator 10 for discriminating presence or absence of abnormality in the secondary battery 2 with an output of the detector 8; and LEDs 26 to 28 are used as the light sources. COPYRIGHT: (C)2007,JPO&INPIT |
