Patent ID: 8558407
Filing Date: 2013-10-15
Classification: H02J,H05B,Y02B

Abstract:
1. An elevator emergency LED lighting power supply assembly for providing backup power to one or more LED lamps of an elevator interior illumination system, the assembly comprising: a battery; an inverter connected to and configured to receive DC power from the battery and configured to output AC backup power to an elevator lighting system; an LED driver connected to the inverter, connectable to an LED lamp of the elevator lighting system, and configured to receive AC power from the inverter and to output DC power sufficient to power an LED lamp; and a first relay connected between the inverter and the LED driver, connectable to a primary elevator electrical power supply, configured to allow AC power to flow from a primary elevator electrical power supply to elevator lighting system LEDs through the LED driver as long as AC power is available from a primary elevator electrical power supply, and further configured to switch contacts upon loss of power from a primary elevator power supply so that the LED driver receives AC power from the inverter.