Devices, systems and methods for emergency light operation
AssigneeTridonic GmbH & Co KG
InventorsArmin Simmet, Ian Wilson, John Kears, Stephen Parkes, Simon Maier
Life of this patent
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Abstract
The invention relates to an operating device (10) for at least one light-emitting diode (9) having an input (11) for coupling to a DC bus (6) in order to receive a DC supply voltage. The operating device (10) has a configurable emergency light function. The operating device (10) is designed to produce, in the emergency light case, the LED currently for the at least one light-emitting diode (9) in dependence on how the emergency light function is configured.
Claims15
An operating device for a lamp having at least one light emitting diode (9), wherein the operating device comprises:
- an input (11) for coupling to a DC bus (6) for receiving a DC supply voltage, via which the operating device (10) can be supplied with power via the DC bus in a normal operation as well as in an emergency light situation;
- an output that provides LED current to the one or more light emitting diodes in the lamp under normal operation;
- and
- a configurable emergency light function;
- wherein the operating device (10) controls LED current to the at least one light emitting diode (9) in the lamp during an emergency light situation depending on how the emergency light function is configured.
A method for an emergency light operation of numerous remote lamps connected to a DC bus where each lamp has at least one light emitting diode (9) and an operating device (10), said operating devices (10) each having an input (11) for coupling to the DC bus (6) to receive a DC supply voltage, an output for providing DC current to the at least one light emitting diode for the lamp, and a configurable emergency light function, wherein the method comprises:
- configuring an emergency light function for each operating device with a selected operational state during an emergency light situation;
- supplying each operating device with a DC supply voltage via the DC bus, the DC supply voltage being supplied to the DC bus by a central DC voltage source during normal operation and by an emergency backup DC voltage source in an emergency light situation when the central DC voltage source is not available;
- detecting the onset of an emergency light situation with each operating device (10);
- and
- controlling LED current from each operating device (10) to the at least one light emitting diode in each respective lamp when an emergency light situation is detected depending on the selected operational state of the emergency light function for the respective operating device.
Dependencies are inferred from the claim text.