Elevator interior illumination

摘要

An elevator interior illumination assembly comprising a primary LED driver that provides conditioned DC power to primary and backup LEDs when AC power is available from a primary electric power source. The backup LEDs receive DC power from a backup electric power source when AC power is not available to the primary LED driver from the primary electric power source.

主权项

1. An elevator interior illumination assembly comprising:
a primary LED mountable in a position to direct light into a compartment; a primary LED driver electrically couplable between a primary electric power source and the primary LED and configured to receive AC power from the primary electric power source and provide conditioned DC power to the primary LED; a first backup LED mountable in a position to direct light into the compartment and configured to operate on DC power received from either the primary LED driver or a backup electric power source; and a switching unit configured to:
couple the first backup LED to the primary LED driver when AC power is available from the primary electric power source; andcouple the first backup LED to the backup electrical power source when AC power is not available to the primary LED driver from the primary electric power source.