| 摘要 |
<p>PURPOSE: An emergency lighting apparatus for a down light is provided to efficiently maintain and manage a battery by detecting the connection state and discharge state of a battery through the voltage of a diode. CONSTITUTION: In an emergency lighting apparatus for a down light, a power supply unit(10) converts AC into DC. A battery(60) supplies charged DC to a discharge unit(70). A feedback unit(50) generates an overcharged voltage corresponding to the over charged voltage of the battery to form a feedback. A charge unit(30) supplies the DC of the power supply unit to the battery through a diode. The discharge unit includes a overcharge prevention unit including a DC-AC conversion unit and a Zener diode(Z3).</p> |
