ADJUSTABLE LIGHTING UNIT WITH CONTROLLABLE ORIENTATION AND INTENSITY OF LIGHT BEAM

• US 20120134155A1
• Filed: 07/28/2010
• Published: 05/31/2012
• Est. Priority Date: 08/05/2009
• Status: Active Grant

• Current Assignee: Philips Lighting BV (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Wendt, Matthias, Radermacher, Harald Josef Günther
• Granted Patent: US 9,930,751 B2
• Time in Patent Office: Days
• US Class Current: 362/249.03
• CPC Class Codes: F21S 2/00 Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
• CPC Class Codes: F21V 21/15 specially adapted for power operation, e.g. by remote control
• CPC Class Codes: F21V 23/04 the elements being switches safety devices F21V25/00
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 47/10 Controlling the light source
• CPC Class Codes: H05B 47/155 Coordinated control of two or more light sources

Abstract

The invention provides a lighting unit (1) comprising a light source (20) and an actuator (40). The light source (20) is arranged to generate, during use, a light beam (B) whose light intensity is dependent upon an electrical power signal (I; V). The actuator (40) is arranged to orient, during use, the light beam (B) in an orientation dependent upon the electrical power signal (I; V). The orientation of the light beam has a pre-determined relationship to the light intensity of the light beam. The invention further relates to a lighting system (100) comprising at least one lighting unit, a space (1000) comprising such a lighting system, and a use of such a lighting system.

Claims

1-15. -15. (canceled)

16. A lighting unit, comprising:

at least two light sources provided on at least two carriers, and

an actuator (40), wherein, during operation,

each of the light sources generates a light beam having light intensity dependent upon an electrical power signal; and

the actuator is configured to mechanically act upon the at least two carriers to orient the light sources depending upon the electrical power signal, such that the orientation of the each of the light beam generated by the light sources has a predetermined relationship to the light intensity thereof.

17. The lighting unit according to claim 16, further comprising a power terminal, wherein the power terminal is electrically connectable to an electrical power supply, and wherein the power terminal is arranged to provide, during operation, the electrical power signal.

18. The lighting unit according to claim 16, wherein the electrical power signal is a current, and the light source and the actuator are electrically connected in a serial arrangement for receiving the current during operation.

19. The lighting unit according to claim 16, wherein the electrical power signal is a voltage, and the light source and the actuator are electrically connected in a parallel arrangement for receiving the voltage during operation.

20. The lighting unit according to claim 16, wherein the light intensity is dependent on an average level of the electrical power signal.

21. The lighting unit according to claim 16, wherein the orientation is dependent on an average power of the electrical power signal.

22. The lighting unit according to claim 16, wherein the light source comprises a light-emitting diode.

23. The lighting unit according to claim 16, wherein the actuator comprises a bimetal actuator element arranged to orient, during operation, the light beams generated by the light sources in dependence upon the electrical power signal.

24. The lighting unit according to claim 16, wherein the actuator comprises an electromechanical solenoid arranged to orient, during operation, the light beams generated by the light sources in an orientation in dependence upon the electrical power signal.

25. A lighting system comprising a plurality of lighting units according to claim 16, and an electrical power supply in electrical communication with the plurality of lighting units and configured for providing the plurality of lighting units with the electrical power signal.