Sound absorbing lighting panel and modular surface system

Patent metadata

Field	Value
Publication number	US-9822938-B2
Application number	US-201314652572-A
Country	US
Kind code	B2
Filing date	Dec 6, 2013
Priority date	Dec 18, 2012
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

Abstract

Disclosed is a sound absorbing lighting panel ( 100 ) comprising a sound absorbing member ( 120 ); an optical medium ( 130 ) over said sound absorbing member; a first set ( 140 ) of solid state lighting elements ( 142 ) arranged along a first edge of said optical medium; a translucent sheet ( 150 ) over the optical medium, said translucent sheet having a non-uniform degree of translucency such as a higher degree of translucency over a central region of said optical medium than over a first region of said optical medium comprising said first edge. A modular surface system including such a sound absorbing lighting panel is also disclosed.

First claim

The invention claimed is:

1. A sound absorbing lighting panel comprising:
a sound absorbing member;
an optical medium over the sound absorbing member;
a first set of solid state lighting elements arranged along a first edge of the optical medium; and
a translucent sheet over the optical medium, the translucent sheet comprising a glass fiber mat coated with an opaque paint,
wherein the opaque paint coating has a larger thickness over a first region of the optical medium comprising the first edge than over a central region of the optical medium so that the translucent sheet has a higher degree of translucency over the central region than over the first region.

2. The sound absorbing lighting panel of claim 1 , wherein the first set of solid state lighting elements comprises a strip of light emitting diodes.

3. The sound absorbing lighting panel of claim 2 , further comprising a second set of solid state lighting elements arranged along a second edge opposite the first edge of the optical medium, wherein the translucent sheet has a higher degree of translucency over the central region than over a second region of the optical medium comprising the second edge.

4. The sound absorbing lighting panel of claim 3 , wherein the second set of solid state lighting elements comprises a further strip of light emitting diodes.

5. The sound absorbing lighting panel of claim 1 , wherein the translucent sheet comprises a plurality of openings covering at least 3 % of its total surface.

6. The sound absorbing lighting panel of claim 1 , further comprising a housing containing the sound absorbing member, the optical medium, the solid state lighting elements and the translucent sheet, the housing having reflective inner surfaces.

7. The sound absorbing lighting panel of claim 1 , wherein the panel has a tile shape.

8. The sound absorbing lighting panel of claim 1 , wherein the translucent sheet has a translucency gradient that is increasing from an edge portion of the sound absorbing lighting panel to the center of the sound absorbing lighting panel.

9. The sound absorbing lighting panel of claim 1 , wherein the optical medium comprises an air-filled cavity.

10. A modular surface system comprising a plurality of panels mounted in a support frame, wherein at least one of said panels is a sound absorbing lighting panel according to claim 1 .

11. The modular surface system of claim 10 , wherein the surface system is a suspended ceiling system.

Assignees

• Philips Lighting Holding Bv

Inventors

• De Gier Ronald Cornelis

Classifications

• F21V33/006

  General building constructions or finishing work for buildings, e.g. roofs, gutters, stairs or floors; Garden equipment; Sunshades or parasols · CPC title

• F21S8/026 Primary

  intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling · CPC title

• E04B9/001 Primary

  characterised by provisions for heat or sound insulation · CPC title

• E04B9/0464

  having irregularities on the faces, e.g. holes, grooves · CPC title

• F21Y2105/00

  Planar light sources · CPC title