Electroluminescent diode lighting device comprising a communication device and installation comprising one such device

• US 20060071613A1
• Filed: 11/20/2003
• Published: 04/06/2006
• Est. Priority Date: 12/05/2002
• Status: Active Grant

• Current Assignee: Schneider Electric Industries SAS (Schneider Electric SE)
• Original Assignee: Schneider Electric Industries SAS (Schneider Electric SE)
• Inventors: Barrault, Michel, Moussanet, Roland, Minier, Vincent, Lovato, Jean-Louis, Collomb, Virginie
• Granted Patent: US 7,208,888 B2
• Time in Patent Office: Days
• US Class Current: 315/291
• CPC Class Codes: H04B 10/1149 Arrangements for indoor wireless networking of information
• CPC Class Codes: H04B 10/116 Visible light communication
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 45/22 using optical feedback
• CPC Class Codes: H05B 45/24 using electrical feedback from LEDs or from LED modules
• CPC Class Codes: H05B 47/115 by determining the presence or movement of objects or living beings
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

The lighting device comprises at least one emitter (10) of white light (9) produced by an initial radiation (1) and a secondary radiation (2), an electronic control circuit (11) to control the lighting, and a communication circuit (12). The electronic circuit (11) controls power supply of the light emitter to emit a modulating light signal (3, 4, 31, 36) of said initial radiation according to a communication signal (13). Said modulating light signal is designed to be received by a light signal receiver (18) sensitive to the initial radiation (1). A lighting installation comprises a power supply line, at least one lighting device (8) and at least one electrical apparatus (95, 96) connected to a receiver (18) comprising a sensor (19) sensitive to the initial radiation (1).

Claims

1-14. -14. (canceled)

15. Lighting device comprising:

at least one light-emitting diode light emitter designed to emit white light by producing an initial radiation and a secondary radiation resulting from excitation of at least one layer of material reacting to said initial radiation,

electronic control means connected to said at least one light-emitting diode light emitter to control the lighting, and

at least first communication means connected to said control means, wherein the electronic control means control power supply of at least one light-emitting diode light emitter to emit a modulating light signal of said initial radiation according to a communication signal supplied by the first communication means, said modulating light signal being designed to be received by light signal receiver means sensitive to the initial radiation.

16. Lighting device according to claim 15 comprising receiver means comprising a sensor sensitive to the initial radiation connected to receipt signal processing means.

17. Lighting device according to claim 16 wherein the receiver means comprise optical filtering means to let a light signal corresponding to an initial radiation pass and to reject a secondary radiation.

18. Lighting device according to claim 16 wherein the receiver means comprise electronic filtering means to reduce or eliminate a DC component of a signal representative of an optical signal received by the receiver means.

19. Lighting device according to claim 15 wherein the electronic control means control power supply of at least one light-emitting diode light emitter to emit a modulated light signal of said initial radiation by superposing a DC component and a modulation signal representative of a communication signal.

20. Lighting device according to claim 19 wherein the DC component depends on a value representative of the communication signal.

21. Lighting device according to claim 19 wherein the amplitude of the modulation signal depends on a value representative of the communication signal.

22. Lighting device according to claim 21 wherein the electronic control means comprise compensation means to compensate lighting color drifts.

23. Lighting device according to claim 15 comprising at least one red light-emitting diode light emitter and/or at least one blue light-emitting diode light emitter controlled by the electronic control means.

24. Lighting device according to claim 15 wherein the electronic control means comprise means for controlling the color temperature of the light.

25. Lighting device according to claim 15 comprising at least one light sensor connected to the control means to regulate the light intensity, the color rendering index and/or the color temperature of a light intended for lighting.

26. Lighting device according to claim 15 comprising at least one current sensor to supply to the control means a signal representative of a current flowing in at least one emitter and to regulate a current to be supplied to said emitter.

27. Lighting installation comprising an electric power supply line to supply at least one lighting device comprising at least one lighting device according to claim 15 and at least one electrical apparatus connected to a receiver comprising a sensor sensitive to the initial radiation.

28. Lighting installation according to claim 27 wherein said receiver is integrated in said at least one electrical apparatus.