Lighting strip, lighting system, panel support element and modular panel system

Patent metadata

Field	Value
Publication number	US-9823407-B2
Application number	US-201314652544-A
Country	US
Kind code	B2
Filing date	Dec 12, 2013
Priority date	Dec 18, 2012
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

Abstract

Disclosed is a lighting strip ( 100 ) comprising an optical waveguide ( 120 ) extending in a length direction of said strip and having a tapered portion tapering from a thin edge ( 124 ) to a thick edge ( 122 ) in a width direction of said strip; at least one solid state lighting element ( 110 ) incorporated in the optical waveguide and arranged to emit light into the optical waveguide in said length direction; and a light scattering pattern ( 130 ) on the thick edge of the tapered portion for redirecting the emitted light to the thin edge of the tapered portion. A lighting system, panel support element ( 210 ) and modular panel system ( 200 ) including such a lighting strip ( 100 ) are also disclosed.

First claim

The invention claimed is:

1. A lighting strip, comprising:
an optical waveguide including a thick edge extending in a length direction of the optical waveguide and having a tapered portion tapering between a thin edge and the thick edge along a width direction of the optical waveguide, the width direction being perpendicular to the length direction;
at least one solid state lighting element arranged within the optical waveguide and arranged to emit light into the optical waveguide in the length direction alongside the thick edge; and
a light scattering pattern on the thick edge of the tapered portion for redirecting the emitted light to the thin edge of the tapered portion.

2. The lighting strip of claim 1 , further comprising a plurality of recesses, each comprising a scattering cavity having opposite exit surfaces in the length direction, wherein each solid state lighting element is placed inside one of the scattering cavities.

3. The lighting strip of claim 2 , wherein each solid state lighting element is arranged to emit light towards the scattering cavity in a direction perpendicular to the width direction and the length direction.

4. The lighting strip of claim 1 , wherein the at least one solid state lighting element comprises a white light solid state lighting element at an end of the optical waveguide in the length direction.

5. The lighting strip of claim 4 , wherein the at least one solid state lighting element comprises a pair of white light solid state lighting elements at opposite ends of the optical waveguide in the length direction.

6. The lighting strip of claim 5 , further comprising a reflective element covering at least a part of the optical waveguide.

7. The lighting strip of claim 1 , wherein the at least one solid state lighting element comprises a first group of solid state lighting elements at an end of the optical waveguide in the length direction, and wherein the first group comprises solid state lighting elements for emitting light of different colours.

8. The lighting strip of claim 7 , wherein the at least one solid state lighting element comprises a first group and a second group of solid state lighting elements at opposite ends of the optical waveguide in the length direction, and wherein each of the first and second groups comprise solid state lighting elements for emitting light of different colours.

9. The lighting strip of claim 8 , wherein the optical waveguide comprises a pair of the tapered portions arranged such that the thin edges of the pair face each other.

10. The lighting strip of claim 8 , wherein the optical waveguide comprises a pair of the tapered portions arranged such that the thick edges of the pair face each other.

11. The lighting strip of claim 1 , wherein the light scattering pattern comprises a pattern of paint dots.

12. A lighting system including at least one lighting s as claimed in claim 1 .

13. The lighting system of claim 12 , wherein the lighting system comprises a plurality of the lighting strips, and wherein the lighting system further comprises a controller for setting the light output of individual lighting strips as a function of at least one of incident daylight, room layout and room occupancy.

14. A panel support element for a modular panel system comprising a lighting strip as claimed in claim 1 .

15. A modular panel system, comprising:
a support grid comprising support members for attaching to a building structure and panel support elements for extending between support members; and
a plurality of panels dimensioned to be supported by the support grid;
wherein the support grid comprises a plurality of lighting strips as claimed in claim 1 .

Assignees

• Philips Lighting Holding Bv

Inventors

• Sreedharanpillai Rajesh
• Pijlman Fetze
• Gommans Hendrikus Hubertus Petrus

Classifications

• G02B6/0018

  Redirecting means on the surface of the light guide · CPC title

• G02B6/0016

  Grooves, prisms, gratings, scattering particles or rough surfaces · CPC title

• F21S8/03 Primary

  of surface-mounted type (F21S8/02, F21S8/04 take precedence; details of wall or floor bases F21V21/02) · CPC title

• G02B6/0046 Primary

  Tapered light guide, e.g. wedge-shaped light guide · CPC title

• G02B6/0068

  Arrangements of plural sources, e.g. multi-colour light sources · CPC title