IP Library Granted Patent US 7,682,034
Granted Patent B2
US 7,682,034 · App. 11/915,447 · Granted Mar 23, 2010

Light-source with fabric diffusing layer

Assignee: Koninklijke Philips Electronics N.V.
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Quick Facts
Patent No.
US 7,682,034
App. No.
11/915,447
Granted
Mar 23, 2010
Kind
B2
Abstract

A light-source comprising at least one lighting unit ( 101 ) being arranged on a substrate ( 102 ) and a diffusing element ( 103 ) being arranged to receive and diffuse light emitted by said at least one lighting unit ( 101 ) is provided. The diffusing element ( 103 ) comprises a layer of non-woven fabric having a lower density at a side facing the lighting unit and a higher density at a side opposite to the lighting unit to obtain good diffusing properties.

Claims (27)

1. A light-source comprising at least one lighting unit ( 101 ) being arranged on a substrate ( 102 ) and a diffusing element ( 103 ) being arranged to receive and diffuse light emitted by said at least one lighting unit ( 101 ), said diffusing element ( 103 ) comprising at least one layer of non-woven fabric, characterized in that the density of the diffusing element ( 103 ) is lower at a first side of the diffusing element facing a lighting unit compared to the density at a second side of the diffusing element opposite to said lighting unit.

2. A light-source according to claim 1 , wherein said diffusing element ( 103 ) comprises at least a first layer of non-woven fabric ( 104 ) and a second layer of non-woven fabric ( 105 ) arranged on said first layer, said first layer facing said substrate ( 102 ), the density of said second layer ( 105 ) being higher the density of said first layer ( 104 ).

3. A light-source according to claim 1 , further comprising at least one layer of whitish fabric ( 107 ) on top of said diffusing element.

4. A light-source according to claim 1 , further comprising at least one layer of colored open structure fabric ( 108 ) on top of said diffusing element ( 103 ).

5. A light-source according to claim 3 , wherein said layer of colored open structure fabric ( 108 ) is arranged on top of said layer of whitish fabric ( 107 ).

6. A light-source according to claim 1 , wherein said at least one lighting unit comprises at least one light emitting diode.

7. A light-source according to claim 1 , comprising at least two lighting units ( 101 , 101 ′), wherein said diffusing element ( 103 ) diffuses light emitted by two adjacent lighting units to produce a substantially continuous light display on a face ( 106 ) of the diffusing element opposite to said lighting units.

8. A light-source according to claim 1 , comprising at least a first lighting unit ( 201 ) and an adjacent second lighting unit ( 202 ), wherein said diffusing element ( 208 ) comprises a first domain ( 211 ) to diffuse light emitted by said first lighting unit ( 201 ) and a second domain ( 212 ) to diffuse light emitted by said second lighting unit ( 202 ), and said first and second domains are at least partly optically separated by a baffler means ( 214 ).

9. A light-source according to claim 8 wherein said barrier means comprises a light-blocking mask arranged on said diffusing element.

10. A light-source according to claim 8 , wherein said barrier means ( 214 ) comprises non-transparent walls extending from said first side towards said second side of said diffusing element.

11. A light source according to claim 10 , wherein said barrier means ( 214 ) comprises a seam joining said diffusing element to said substrate.

12. A light-source according to claim 1 , wherein said at least one lighting unit ( 101 ) and said substrate ( 102 ) is encapsulated in a translucent encapsulation.

13. A light-source according to claim 12 , wherein said translucent encapsulation comprises an elastomeric material.

14. A light-source according to claim 12 , wherein said translucent encapsulation comprises light-scattering elements.

15. A light-diffusing element ( 103 ) for arrangement on a lighting unit, said diffusing element comprising at least one layer of non-woven fabric, wherein the density of the diffusing element is lower at a first face of the diffusing element adapted to face a lighting unit of said light source, compared to the density at a second face of the diffusing element adapted to be opposite to said lighting unit.

16. A light-diffusing element according to claim 15 , wherein said diffusing element ( 103 ) comprises at least a first layer ( 104 ) of non-woven fabric arranged to face said lighting unit and a second layer ( 105 ) of non-woven fabric arranged on said first layer, the density of said second layer being higher the density of said first layer.

17. A light-diffusing element according to claim 15 , further comprising at least one layer of whitish fabric ( 107 ) on top of said diffusing element.

18. A light-diffusing element according to claim 15 , further comprising at least one layer of colored open structure fabric ( 108 ) on top of said diffusing element ( 103 ).

19. A light-diffusing element according to claim 17 , wherein said layer of colored open structure fabric ( 108 ) is arranged on top of said layer of whitish fabric ( 107 ).

20. A light-diffusing element according to claim 15 , wherein said diffusing element ( 208 ) comprises at least a first domain ( 211 ) and a second domain ( 212 ), at least partly optically separated by a barrier means ( 214 ).

21. A light-diffusing element according to claim 20 , wherein said barrier means comprises a light-blocking mask arranged on said diffusing element.

22. A light-diffusing element according to claim 20 , wherein said barrier means ( 214 ) comprises non-transparent walls extending from said first face towards said second face of said diffusing element.

23. A textile product, comprising a light-source according to claim 1 .

24. A textile product according to claim 23 , comprising a communication means adapted to receive data and a means to control the emission of light from said light source according to said received data.

25. A textile product according to claim 23 , comprising a sensor means adapted to detect a sensible condition and to control the emission of light from said light source according to said detected condition.

26. A textile product according to claim 25 , wherein said sensor means is selected from the group consisting of temperature sensors, light detectors, compasses, positioning systems, pressure sensors and microphones.

27. A textile product according to claim 23 , being selected from the group consisting of pillows, furnishing fabric, garments, gloves, banners, flags, carpets, curtains, vehicle ceilings, bed textiles, cuddly toys and back packs.

Assignments (4)
CHANGE OF NAME Recorded Oct 28, 2019
From: PHILIPS LIGHTING HOLDING B.V.
To: SIGNIFY HOLDING B.V.
Reel/Frame 050837/0576 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 13, 2016
From: KONINKLIJKE PHILIPS N.V.
To: PHILIPS LIGHTING HOLDING B.V.
Reel/Frame 040060/0009 →
CHANGE OF NAME Recorded Jul 22, 2016
From: KONINKLIJKE PHILIPS ELECTRONICS N.V.
To: KONINKLIJKE PHILIPS N.V.
Reel/Frame 039428/0606 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 27, 2007
From: ASVADI, SIMA; KRANS, MARTIJN; VAN BRUGGEN, MICHEL PAUL BARBARA; WILDERBEEK, JOHANNES THEODORUS ADRIAAN; DEN TOONDER, JACOB MARINUS JAN
To: KONINKLIJKE PHILIPS ELECTRONICS N V
Reel/Frame 020155/0781 →
Priority Claims (2)
EP 05104677 · May 31, 2005 · regional
EP 05107974 · Aug 31, 2005 · regional
Continuity (1)
Related Publication 20080205035A1 · Aug 28, 2008