Shaped indirect luminaire

Patent metadata

Field	Value
Publication number	US-9528683-B2
Application number	US-201514703594-A
Country	US
Kind code	B2
Filing date	May 4, 2015
Priority date	Sep 28, 2012
Publication date	Dec 27, 2016
Grant date	Dec 27, 2016

Abstract

A luminaire is provided, that includes a housing and a plurality of solid state light sources connected thereto. The housing has a top side, two lateral sides, a protrusion in the top side, and two light source mounting surfaces. The top side is diffusely reflecting and has opposing lateral edges and a center. The lateral sides are specularly reflecting and extend generally downward from the opposing lateral edges of the top side. Each has a respective bottom edge. The light source mounting surfaces extend laterally inward from the respective bottom edges. The plurality of solid state light sources is disposed along the pair of light source mounting surfaces proximate the pair of specularly reflecting lateral sides. These emit light, which travels upward to the top side and is also specularly reflected by the lateral sides toward the top side. The top side diffusely reflects the light out of the luminaire.

First claim

What is claimed is:

1. A luminaire housing, comprising:
a pair of light source mounting surfaces, each extending laterally outward from an inner edge to an outer edge;
a pair of glossy reflective lateral sides, each extending generally upward from the outer edge of a corresponding one of pair of the light source mounting surfaces to a top edge;
a pair of arcs, each arc extending from a top edge of a corresponding one of the pair of glossy reflective lateral sides inward, such that the pair of arcs meet at a point that is centered between the pair of glossy reflective lateral sides, wherein an angle of each arc is located below the luminaire housing, wherein each of the pair of arcs is glossy reflective; wherein the pair of light source mounting surfaces are each configured to receive a diffuser; and wherein a set of solid state light sources is disposed on the pair of light source mounting surfaces, such that light emitted therefrom is diffused by the diffuser upon exiting the luminaire housing.

2. The luminaire housing of claim 1 , wherein a first subset of the set of solid state light sources is disposed on one of the pair of light source mounting surfaces in proximity to its corresponding one of the pair of glossy reflective lateral sides, and wherein a second subset of the set of solid state light sources is disposed on the other of the pair of light source mounting surfaces in proximity to its corresponding one of the pair of glossy reflective lateral sides.

3. The luminaire housing of claim 1 , wherein the set of solid state light sources is enclosed behind a pair of windows, each window in the pair of windows extending from a corresponding one of the pair of light source mounting surfaces towards a corresponding one of the pair of arcs.

4. The luminaire housing of claim 3 , wherein each of the pair of glossy reflective lateral sides and each of the pair of arcs is coated with one of a semi-gloss paint, a satin paint, or an eggshell paint.

5. The luminaire housing of claim 1 , wherein each of the pair of glossy reflective lateral sides and each of the pair of arcs is coated with high reflectivity glossy paint.

6. The luminaire housing of claim 1 , wherein each of the pair of arcs is a partial parabolic curve.

7. The luminaire housing of claim 6 , wherein a focus of a parabola defined at least in part by one of the partial parabolic curves is located exterior to one of the pair of glossy reflective lateral sides.

8. The luminaire housing of claim 1 , wherein each of the pair of arcs is formed by a series of curves.

9. The luminaire housing of claim 8 , wherein each of the series of curves is formed by a corresponding set of connected straight line segments, such that each corresponding set of connected straight line segments approximates one of the pair of arcs.

10. The luminaire housing of claim 1 , wherein each of the arcs in the pair of arcs has an internal surface that faces one of the pair of light source mounting surfaces and an opposing external surface, and wherein one of the pair of arcs is configured to receive a power supply on its external surface.

11. The luminaire housing of claim 1 , wherein the pair of light source mounting surfaces, the pair of glossy reflective lateral surfaces, and the pair of arcs are integrally formed.

12. A luminaire, comprising:
a luminaire housing, comprising:
a pair of light source mounting surfaces, each extending laterally outward from an inner edge to an outer edge;
a pair of glossy reflective lateral sides, each extending generally upward from the outer edge of a corresponding one of pair of the light source mounting surfaces to a top edge; and
a pair of arcs, each arc extending from a top edge of a corresponding one of the pair of glossy reflective lateral sides inward, such that the pair of arcs meet at a point that is centered between the pair of glossy reflective lateral sides, wherein an angle of each arc is located below the luminaire housing, wherein each of the pair of arcs is glossy reflective; and
a set of solid state light sources disposed on the pair of light source mounting surfaces and configured to emit light towards the pair of glossy reflective lateral sides and the pair of arcs, wherein a portion of the emitted light is specularly reflected and shaped by the angle of one of the pair of arcs, and wherein a portion of the emitted light is diffusely reflected, prior to exiting the luminaire.

13. The luminaire of claim 12 , further comprising a diffuser, wherein the diffuser is connected to the luminaire at the pair of light source mounting surfaces.

14. The luminaire of claim 12 , wherein the pair of light source mounting surfaces are a single, integrally formed surface made of a diffusive material.

15. The luminaire of claim 14 , further comprising a pair of windows behind which are enclosed the set of solid state light sources, each window in the pair of windows extending from the single, integrally formed surface towards a corresponding one of the pair of arcs.

16. The luminaire of claim 12 , wherein each of the arcs in the pair of arcs has an internal surface that faces one of the pair of light source mounting surfaces and an opposing external surface, and wherein one of the pair of arcs comprises a power supply enclosure, configured to receive a power supply, on its external surface.

17. The luminaire of claim 12 , wherein the pair of arcs comprises:
a pair of arcs, each arc extending from a top edge of a corresponding one of the pair of glossy reflective lateral sides inward, such that the pair of arcs meet at an angled reflector that is centered between the pair of glossy reflective lateral sides, wherein an angle of each arc is located below the luminaire housing, wherein each of the pair of arcs is glossy reflective, and wherein the angled reflector is glossy reflective.

Assignees

• Radl Bruce
• Chang Alice
• Chidiac Amina
• Osram Sylvania Inc

Inventors

• Radl Bruce
• Chang Alice
• Chidiac Amina

Classifications

• F21Y2113/13

  comprising an assembly of point-like light sources · CPC title

• F21V13/08

  the elements being filters or photoluminescent elements and reflectors · CPC title

• F21V19/002

  the fastening means engaging the encapsulation or the packaging of the semiconductor device · CPC title

• F21Y2101/02

  Mechanical Engineering · mapped topic

• F21V23/023

  Power supplies in a casing (F21V23/003 takes precedence) · CPC title