POWER SUPPLY DEVICE FOR WIRELESS SUPPLY OF ELECTRICAL POWER TO AN EMERGENCY LUMINAIRE

The present invention provides a power supply device (1) for a wireless supply of electrical power to an emergency luminaire (2). The power supply device (1) comprises electrical coupling means (12) for a wireless power transfer, and an electrical energy storage (13). The power supply device (1) is configured to wirelessly supply electrical power from the electrical energy storage (13) of the power supply device (1) to the emergency luminaire (2), via a wireless transfer of the electrical power from the electrical coupling means (12) of the power supply device (1) to electrical coupling means (22) of the emergency luminaire (2). The present invention further provides an emergency luminaire (2) and an emergency lighting system comprising such a power supply device (1) and such an emergency luminaire (2).