LED LUMINAIRE

• US 20170248286A1
• Filed: 09/09/2015
• Published: 08/31/2017
• Est. Priority Date: 09/11/2014
• Status: Active Grant

• Current Assignee: City Electric Supply Company (Consolidated Electrical Distributors Incorporated)
• Original Assignee: City Electric Supply Company (Consolidated Electrical Distributors Incorporated)
• Inventors: Wouters, Thomas, McGinn, Jordan, McShane, Francis Paul
• Granted Patent: US 10,060,584 B2
• Time in Patent Office: Days
• CPC Class Codes: F21S 8/00 Lighting devices intended for fixed installation F21S9/00, F21S10/00 take precedence; using a string or strip of light sources F21S4/00
• CPC Class Codes: F21S 8/04 intended only for mounting on a ceiling or the like overhead structures F21S8/02 takes precedence; details of ceiling bases F21V21/03
• CPC Class Codes: F21S 8/043 mounted by means of a rigid support, e.g. bracket or arm
• CPC Class Codes: F21V 21/02 Wall, ceiling, or floor bases; Fixing pendants or arms to the bases F21V21/08 takes precedence; bases for movable standing lamps F21V21/06
• CPC Class Codes: F21W 2121/00 Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
• CPC Class Codes: F21Y 2107/00 Light sources with three-dimensionally disposed light-generating elements
• CPC Class Codes: F21Y 2107/20 on convex supports or substrates, e.g. on the outer surface of spheres
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

Area lighting with a luminaire constructed from an array of light-emitting diodes (LEDs) distributed along the convex surface segment of an elliptic torus provides a uniform light output to the surrounding area.

Claims

1. A luminaire comprising:

a base member defining a generally planar surface;

a plurality of elliptical arcuate LED bands mounted in spaced-apart relation, and displaced from the surface of the base member, wherein each arcuate LED band comprises;

opposing end portions and an apex, the concavity of each arcuate band facing the base member;

a plurality of LEDs operatively mounted in spaced relation along the convex surface of each of the arcuate LED bands, each LED oriented normal to the arcuate LED band upon which it is mounted;

wherein the plurality of arcuate LED bands are in spaced-apart relation to a mounting surface of first and second elliptical arcuate members extending along opposing sides of the base member, wherein the first and second elliptical arcuate members extend above the surface of the base member, each first and second elliptical arcuate members having opposing end portions and an intermediate apex, with the concavity of each elliptical arc facing the base, such that the opposing end portions of each arcuate LED band are positioned, respectively, on the mounting surface of the first and second elliptical arcuate members, and the LEDs on each arcuate LED band are oriented normal to the mounting surface of the first and second elliptical arcuate members to which the band is attached; and

wherein the LEDs on each arcuate LED band that are closest to the end portions of their respective arcuate LED band are oriented at a predetermined angle below the planar surface of the base member.

2. The luminaire of claim 1 in which the first and second elliptical arcuate members are secured to the base member.

3. The luminaire of claim 1 in which the first and second elliptical arcuate members are the upper edges of side panels that are integrally formed with the base member.

4. The luminaire of claim 1 in which the first and second elliptical arcuate members are the upper edges of side panels that are joined to, and form a right angle with the base members.

5. The luminaire of claim 1 in which the first and second elliptical arcuate members are the upper edges of side panels that are joined to, and form an acute angle with the base member.

6. The luminaire of claim 1 in which each of the first and second elliptical arcuate members are elongated elements, the opposing ends of which are configured and dimensioned to be secured to the base member.

13. The luminaire of claim 1 that is configured for (a) flush-mounting in a ceiling, (b) surface mounting on a ceiling, or (c) pendant mounting from a ceiling.

14. The luminaire of claim 3 in which the side panels include one or more openings.

15. The luminaire of claim 14 in which the openings define a decorative pattern.

7. A luminaire comprising a plurality of LEDs positioned on a convex surface of a member that constitutes a segment of an elliptical torus, each LED being oriented normal to the surface of the elliptical torus segment on which it is mounted.

8. The luminaire of claim 7 in which the surface is formed from a perforated sheet or web of a semi-rigid material.

9. The luminaire of claim 8 in which the perforated material is preformed to define the desired toroidal surface.

10. The luminaire of claim 8 in which the LEDs are mounted in a predetermined array in at least some of the perforations in the sheet or web.

11. The luminaire of claim 7 in which the torus is formed by the rotation of a circle.

12. A luminaire comprising a plurality of LEDs positioned on a convex surface of a member that constitutes a segment that is a portion of a sphere, each LED being aimed in a direction that is normal to the surface on which it is mounted.