# US 10,122,206 B2 · Devices, systems and methods for emergency light operation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,122,206 B2 - Document ID: US10122206B2 - Status: Granted - Kind: B2 - Application number: 15/129,006 - Filed: 2015-03-18 - Published: 2017-04-20 - Granted: 2018-11-06 - Earliest claimed: 2014-03-26 - Assignees: Tridonic GmbH & Co KG - Applicants: Tridonic GmbH & Co KG - Inventors: Armin Simmet; Ian Wilson; John Kears; Stephen Parkes; Simon Maier - Web page: https://patentgrep.com/patent/US10122206B2 ## CPC - H02J 9/065: {for lighting purposes} - F21S 9/022: {Emergency lighting devices} - H02J 9/02: in which an auxiliary distribution system and its associated lamps are brought into service - H05B 47/105: in response to determined parameters - H05B 47/14: by determining electrical parameters of the light source - H05B 47/185: via power line carrier transmission - F21Y 2115/10: Light-emitting diodes [LED] - H05B 45/382: with galvanic isolation between input and output - Y02B 10/70: Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## 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. ## Claims ### Claim 1 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. ### Claim 2 (depends on 1) The operating device according to claim 1, wherein the configurable emergency light function can be selectively configured so that the operating device (10) does not supply LED current to the one or more light emitting diodes in the lamp in an emergency light situation. ### Claim 3 (depends on 1) The operating device according to claim 1, wherein the emergency light function can be selectively configured via at least one switch element (15) of the operating device (10). ### Claim 4 (depends on 3) The operating device according to claim 3, wherein the at least one switch element is selected from a group composed of a jumper (16), an adjustable resistor and an adjustable capacitor. ### Claim 5 (depends on 1) The operating device according to claim 1, wherein the operating device (10) has an interface (11; 18) for receiving a command for selectively configuring the emergency light function. ### Claim 6 (depends on 1) The operating device according to claim 1, further comprising an integrated semiconductor circuit (14), which is designed do detect an emergency light situation, and to control the operating device (10) in the emergency light situation; depending on how the emergency light function is configured. ### Claim 7 (depends on 6) The operating device according to claim 6, wherein the integrated semiconductor circuit (14) is connected to the input, and is designed to detect the emergency light situation through monitoring a voltage at the input (11). ### Claim 8 (depends on 6) The operating device according to claim 6, further comprising a DC-DC converter (12) with a controllable switch (13), wherein the integrated semiconductor circuit (14) is designed to switch the controllable switch (13) in a clocked manner in an emergency light situation; in order to generate the LED current when the emergency light function is selectively configured for the operating device (10) to provide LED current to the at least one light emitting diode of the lamp in the emergency light situation. ### Claim 9 (depends on 1) A lamp, comprising an operating device (10) according to claim 1, and at least one light emitting diode (9), which is connected to the output of the operating device (10). ### Claim 10 (depends on 1) A lighting system, comprising: a DC bus (6); a lamp comprising at least one operating device (10) according to claim 1 which is connected to the DC bus (6) and at least one light emitting diode (9) which is connected to the output of the operating device (10); an AC power source; a supply circuit that converts power from the AC power source to a DC supply voltage that is provided to the DC bus (6) during normal operation; and a backup emergency DC voltage source (5) for providing the supply voltage at the DC bus (6) in an emergency light situation. ### Claim 11 (depends on 10) A lighting system according to claim 10, wherein the lighting system comprises numerous lamps with operating devices (10) connected to the DC bus and having a configurable emergency light function, and wherein the emergency light function is configured in only a portion of the operating devices (22, 24) connected to the DC bus to supply LED current to the one or more light emitting diodes in respective lamp in an emergency light situation. ### Claim 12 (depends on 10) The lighting system according to claim 10, wherein the backup emergency DC voltage source comprises a battery or a rechargeable battery (5). ### Claim 13 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. ### Claim 14 (depends on 13) A method according to claim 13 wherein where the DC supply voltage during normal operation is different than the DC supply voltage in an emergency light situation. ### Claim 15 (depends on 13) A method according to claim 13 wherein the selected operational state for a first set of lamps during an emergency light situation comprises an off state such that no LED current is supplied to the respective at least one light emitting diodes in the first set of lamps connected to the DC bus and the selected operational state for a second set of lamps during an emergency light situation is such that LED current is supplied to the respective at least one light emitting diodes in the second set of lamps connected to the DC bus during an emergency light situation.