| 摘要 |
<p>PURPOSE: A control device is provided to enable people to visually recognize a guide lamp by automatically turning on and off the guide lamp when power is disconnected. CONSTITUTION: A power input part(110) receives external AC power and applies the power to an emergency guide lamp. A battery(120) is used as a secondary power source part in order to drive the emergency guide lamp. A charging part(130) receives the AC power and charges the battery. A power outage sensing part(140) senses the AC power and generates a signal which determines a power outage state. A control part(150) controls the emergency guide lamp according to the signal from the power outage sensing part.</p> |
