Outdoor and/or Enclosed Structure LED Luminaire

Patent metadata

Field	Value
Publication number	US-2017168221-A1
Application number	US-201715443818-A
Country	US
Kind code	A1
Filing date	Feb 27, 2017
Priority date	Mar 15, 2013
Publication date	Jun 15, 2017
Grant date	—

Abstract

A luminaire with a plurality of optical waveguides disposed in side-by-side relationship, together at least partially defining a closed path, and a plurality of optical coupling portions disposed adjacent to the optical waveguides. Further, each optical coupling portion is associated with one of the optical waveguides, and each coupling portion includes a refractive portion and a pair of reflective portions disposed on opposite sides of the refractive portion. Additionally, at least one LED is associated with each optical coupling portion and disposed at a first end of the associated optical coupling portion.

First claim

1 . A luminaire, comprising:
a plurality of optical waveguides disposed in side-by-side relationship and together at least partially defining a closed path; a plurality of optical coupling portions disposed adjacent to the optical waveguides, wherein each optical coupling portion is associated with one of the optical waveguides, and wherein each coupling portion comprises a refractive portion and a pair of reflective portions disposed on opposite sides of the refractive portion; and at least one LED associated with each optical coupling portion and disposed at a first end of the associated optical coupling portion.

2 . The luminaire of claim 1 , wherein the optical waveguides are disposed in a main frame.

3 . The luminaire of claim 1 , wherein each coupling portion comprises refracting and reflecting portions.

4 . The luminaire of claim 1 , wherein each waveguide further comprises a light emitting portion which comprises a plurality of light extraction features.

5 . The luminaire of claim 1 , further comprising a sensor and a driver circuit responsive to the sensor for operating the LEDs.

6 . The luminaire of claim 1 , wherein each optical waveguide comprises an end adjacent to the optical coupling portion and an end opposite the optical coupling portion and each optical waveguide comprises one or more protrusions disposed at the end opposite the optical coupling portion.

7 . The luminaire of claim 1 , wherein the optical waveguides comprise at least substantially identical dimensions.

8 . A luminaire, comprising:
a main frame comprising a first surface and a second surface opposite the first surface; a cover plate mounted on the first surface of the main frame, wherein an outer edge of the cover plate extends to the second surface of the main frame; a plurality of waveguides disposed in the main frame wherein each optical waveguide comprises first and second opposite waveguide ends, a coupling portion disposed at the first waveguide end, and a light emitting portion disposed between the first and second waveguide ends, wherein at least one of the waveguides is disposed at an angle relative to at least one other waveguide, and wherein the coupling portions of the waveguides are disposed adjacent a first luminaire end and the second waveguide ends are disposed adjacent a second luminaire end opposite the first luminaire end; and at least one LED associated with each waveguide.

9 . The luminaire of claim 8 , wherein each coupling portion comprises a refracting portion and at least two reflecting portions.

10 . The luminaire of claim 9 , wherein the light emitting portion of each optical waveguide comprises a plurality of light extraction features.

11 . The luminaire of claim 10 , wherein the light extraction features are clustered into two or more groups of similar light extraction features.

12 . The luminaire of claim 8 , further comprising a printed circuit board interconnecting the LEDs.

13 . The luminaire of claim 8 , wherein the cover plate mounted on the main frame overhangs the main body.

14 . (canceled)

15 . A luminaire, comprising:
a frame comprising a first surface and a second surface opposite the first surface, wherein the frame forms at least one channeled receptacle; at least one waveguide disposed in the channeled receptacle comprising first and second opposite waveguide ends, an optical coupling portion disposed at the first waveguide end, and a light emitting portion disposed between the first and second waveguide ends, and at least one LED associated with the at least one waveguide; wherein the optical coupling portion is disposed adjacent to the at least one waveguide; and wherein the optical coupling portion of the waveguide is disposed adjacent a first luminaire end and the second waveguide end is disposed adjacent a second luminaire end opposite the first luminaire end.

16 . The luminaire of claim 15 , wherein the light emitting portion of the at least one waveguide comprises a plurality of light extraction features.

17 . The luminaire of claim 16 , wherein the light extraction features are clustered into two or more groups of similar light extraction features.

18 . The luminaire of claim 17 , wherein the two or more groups of light extraction features are clustered according to a similar dimension.

19 . The luminaire of claim 15 , wherein the optical coupling portion comprises a refractive portion and at least two reflective portions disposed on opposite sides of the refractive portion.

20 . The luminaire of claim 15 , wherein a central enclosure is disposed within the frame;
wherein a cover encloses the central enclosure; and wherein the cover sinks heat from the at least one LED.

21 . The luminaire of claim 15 , further comprising at least one circuit element disposed adjacent the optical coupling portion between the first and second surfaces of the frame.

Assignees

• Cree Inc

Inventors

• Wilcox Kurt S
• Medendorp Jr Nicholas W
• Kinnune Brian
• Trott Gary David
• Castillo Mario A
• Lopez Peter
• Pratt S Scott
• Dixon Mark
• Dungan William L

Classifications

• F21S8/086

  with lighting device attached sideways of the standard, e.g. for roads and highways · CPC title

• G02B6/0083

  Details of electrical connections of light sources to drivers, circuit boards, or the like · CPC title

• G02B6/0085

  Means for removing heat created by the light source from the package · CPC title

• G02B6/0038 Primary

  Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide · CPC title

• G02B6/0035

  provided on the surface of the light guide or in the bulk of it · CPC title