Patent ID: 9350200
Filing Date: 2016-05-24
CPC Classification: H02J

Claim Text:
1. An auxiliary power unit (APU) for an emergency light in case of a fire or power failure, comprising: a regular power input unit installed at the rear of a switching unit for switching over between regular power and emergency power, and configured to receive the regular power and supply the received regular power to a regular light; an emergency power input unit configured to receive the emergency power and supply the received emergency power to an emergency light; a changeover switch configured to switch the power input such that the emergency light is automatically turned on by the emergency power in case of a power failure of the regular power; a firefighting power monitoring relay operated by firefighting power when a fire occurs; a firefighting-power-monitoring-relay contact switch configured to connect power from an ATS (Auto Changeover switch) to the emergency power input unit in connection with the firefighting power monitoring relay; a fire driving unit installed in the emergency power input unit and operated by the power inputted to the emergency power input unit; and an emergency light auto lighting switch configured to connect the emergency light to the regular power input unit in connection with the fire driving unit, such that the emergency light is automatically turned on.