DIRECT-INDIRECT LUMINAIRE HAVING CONFIGURABLE PLANAR LIGHT PANELS

• US 20140268766A1
• Filed: 03/17/2014
• Published: 09/18/2014
• Est. Priority Date: 03/15/2013
• Status: Abandoned Application

• Current Assignee: ABL IP Holding LLC (Acuity Brands, Inc.)
• Original Assignee: ABL IP Holding LLC (Acuity Brands, Inc.)
• Inventors: Lu, Min-Hao Michael
• Application Number:
  US14/217,138
• Publication Number:
  US 20140268766A1
• Time in Patent Office: Days
• US Class Current: 362/249.1
• CPC Class Codes: F21S 8/061 with a non-rigid pendant, i.e. a cable, wire or chain
• CPC Class Codes: F21V 21/30 Pivoted housings or frames
• CPC Class Codes: F21V 5/08 producing an asymmetric light distribution
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2105/00 Planar light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G02B 6/0078 Side-by-side arrangements, e.g. for large area displays
• CPC Class Codes: G02B 6/0086 Positioning aspects

Abstract

A direct-indirect luminaire 11 is comprised of a support frame 23, 25 for supporting multiple planar light sources 15 that emit light from both their top and bottom planar surfaces 17, 19 for producing up-light and down-light in characteristic light distribution patterns. The planar light sources, which are preferably edge-fed light waveguides, can be supported in the support frame in different rotational orientations that can be changed to change the light distribution characteristics of the luminaire.

Claims

1. A luminaire comprising

at least two planar light sources having a top light emitting planar surface for producing a characteristic up-light distribution pattern and a bottom light emitting planar surface for producing a characteristic down-light distribution pattern, and

a support frame for supporting planar light sources such that each of said light sources can emit up-light and down-light substantially unobstructed by said support frame, said support frame being adapted to allow the planar light sources to be removed and reinstalled in the support frame in a different rotated orientation relative to each other.

2. The luminaire of claim 1 wherein said mounting frame includes an inner support ring, an outer support ring, and means for connecting each of said planar light sources between said support rings at a selected rotated orientation, wherein the planar light sources can be supported between said support rings at different rotated orientations relative to each other.

3. The luminaire of claim 2 wherein at least one of said inner and outer support rings includes suspension points for the luminaire and points where the luminaire can be wired to an external power source.

4. The luminaire of claim 2 wherein said inner ring includes the suspension points for the luminaire and points where the luminaire can be wired to an external power source.

5. The luminaire of claim 1 wherein the top light emitting planar surface of each of said planar light sources produces a rotationally asymmetric distribution pattern, and the bottom light emitting planar surface of each of said planar light sources produce a substantially rotationally symmetric distribution pattern.

6. The luminaire of claim 1 wherein the top light emitting planar surface of each of said planar light sources produces a bat wing distribution pattern, and the bottom light emitting planar surface of each of said planar light sources produces a the substantially rotationally symmetric distribution pattern.

7. The luminaire of claim 6 wherein the bottom light emitting planar surface of each of said planar light sources produces a substantially cosine distribution pattern.

8. The luminaire of claim 1 wherein four planar light sources provided each of which has a top light emitting planar surface for producing a characteristic up-light distribution pattern and a bottom light emitting planar surface for producing a characteristic down-light distribution pattern, and wherein said planar light sources are supported in said support frame such that each of said light sources can emit up-light and down-light substantially unobstructed by said support frame, said support frame being adapted to allow the four planar light sources to be removed and reinstalled in the support frame in a different rotated orientation relative to each other.

9. A luminaire comprising

an outer support ring, and

a plurality of planar light sources having a top light emitting planar surface for producing a characteristic up-light distribution pattern and a bottom light emitting planar surface for producing a characteristic down-light distribution pattern, each of said planar light sources between being supported between said inner and outer support rings at different possible rotated orientations, wherein, when supported between said inner and outer support rings, the support rings and planar light sources form a luminaire with an up-light and down-light distribution pattern the depends on the rotated orientations of the planar light sources supported between said inner and outer support rings.

10. The luminaire of claim 9 wherein said inner and outer support rings have corner regions and straight wall sections extending between said corner regions, wherein straight wall sections of said inner support ring oppose straight wall sections of said outer ring, and wherein the planar light sources are supported between opposed straight wall sections of said inner and outer support rings.

11. The luminaire of claim 10 wherein the corner regions of at least one of said inner and outer support rings includes suspension points for the luminaire and points where the luminaire can be wired to an external power source.

12. The luminaire of claim 10 wherein the corner regions of said inner ring includes suspension points for the luminaire and points where the luminaire can be wired to an external power source.

13. The luminaire of claim 10 wherein the planar light sources have different opposite substantially straight perimeter edges that will align with opposed straight wall sections of said inner and outer support rings between which the planar light sources are supported.

14. The luminaire of claim 13 wherein the planar light sources are substantially square planar light sources.

15. The luminaire of claim 9 wherein the top light emitting planar surface of each of said planar light sources produces a rotationally asymmetric distribution pattern, and the bottom light emitting planar surface of each of said planar light sources produce a substantially rotationally symmetric distribution pattern.

16. The luminaire of claim 9 wherein the top light emitting planar surface of each of said planar light sources produces a bat wing distribution pattern, and the bottom light emitting planar surface of each of said planar light sources produces a the substantially rotationally symmetric distribution pattern.

17. The luminaire of claim 16 wherein the bottom light emitting planar surface of each of said planar light sources produces a substantially cosine distribution pattern.

18. A luminaire comprising

an inner support ring having corner regions and straight wall sections,

an outer support ring having corner regions and straight sections corresponding with the corner regions and straight sections of said inner support ring, and wherein straight wall sections of said inner support ring oppose straight wall sections of said outer ring,

the corner regions of at least one of said inner and outer support rings including suspension points for the luminaire and points where the luminaire can be wired to an external power source

a plurality of planar light sources having a top light emitting planar surface for producing a rotationally asymmetric up-light distribution pattern and a bottom light emitting planar surface for producing a substantially rotationally symmetric down-light distribution pattern,

each of said planar light sources between being supported between the straight wall sections of said inner and outer support rings at different possible rotated orientations, wherein, when supported between said inner and outer support rings, the support rings and planar light sources form a luminaire with an up-light and down-light distribution pattern the depends on the rotated orientations of the planar light sources supported between the straight wall sections of said inner and outer support rings.

19. The luminaire of claim 18 wherein the top light emitting planar surface of each of said planar light sources produces a bat wing distribution pattern, and the bottom light emitting planar surface of each of said planar light sources produces a the substantially rotationally symmetric distribution pattern.

20. The luminaire of claim 19 wherein the bottom light emitting planar surface of each of said planar light sources produces a substantially cosine distribution pattern.