Optical waveguide bodies and luminaires utilizing same

Patent metadata

Field	Value
Publication number	US-9366799-B2
Application number	US-201414292778-A
Country	US
Kind code	B2
Filing date	May 30, 2014
Priority date	Mar 15, 2013
Publication date	Jun 14, 2016
Grant date	Jun 14, 2016

Abstract

According to one aspect, a luminaire comprises a waveguide body including a central section and first and second separate side sections extending away from the central section along first and second opposed directions, respectively. The central section includes a coupling portion and the waveguide body has a length and includes a plurality of light extraction features that extract light out of the side sections. At least one LED is disposed adjacent the coupling portion and is operated by a power circuit to produce light that is directed into the waveguide body by the coupling portion. At least one structural member extends along the length of the waveguide body for supporting the waveguide body and encloses at least one of the power circuit and the at least one LED.

First claim

We claim:

1. A luminaire, comprising:
a waveguide body comprising a central section and first and second separate side sections extending away from the central section along first and second opposed directions, respectively, wherein the central section comprises a coupling portion and wherein the waveguide body comprises a length and comprises a plurality of light extraction features that extract light out of the side sections;
at least one LED disposed adjacent the coupling portion and operated by a power circuit to produce light that is directed into the waveguide body by the coupling portion; and
at least one structural member extending along the length of the waveguide body for supporting the waveguide body and enclosing at least one of the power circuit and the at least one LED, and wherein the first and second separate side sections extend beyond and away from the at least one structural member.

2. The luminaire of claim 1 , wherein the luminaire comprises a plurality of LED elements disposed in the coupling portion.

3. The luminaire of claim 1 , wherein the at least one structural member is disposed on one side of the waveguide body.

4. The luminaire of claim 3 , wherein a further structural member is disposed on another side of the waveguide body opposite the one side.

5. The luminaire of claim 4 , wherein the structural members are secured to one another.

6. The luminaire of claim 5 , wherein the at least one LED is carried by a circuit board disposed in the another structural member.

7. The luminaire of claim 1 , further comprising a control circuit at least a portion of which is disposed in the at least one structural member, wherein the control circuit comprises at least one of a network component, an RF component, a control component, and a sensor.

8. The luminaire of claim 7 , further comprising first and second end caps disposed at first and second ends of the coupling portion to enclose at least a portion of at least one of the power circuit, control circuit, and the at least one LED.

9. The luminaire of claim 7 , wherein the at least one structural member encloses the power circuit, control circuit, and the at least one LED and the waveguide body extends from the at least one structural member and emits light away from the at least one structural member.

10. The luminaire of claim 8 , wherein the at least one structural member comprises first and second structural members disposed on opposing sides of the waveguide body.

11. The luminaire of claim 10 , wherein at least one of the power circuit, the control circuit, and the at least one LED is disposed in at least one of the first and second structural members.

12. The luminaire of claim 1 , wherein the at least one structural member comprises a linear extent and the side sections of the waveguide body extend transverse to the linear extent at a non-zero angle with respect to one another.

13. The luminaire of claim 1 , wherein the at least one structural member is disposed proximal to the central section of the waveguide body.

14. The luminaire of claim 1 , wherein the at least one structural member is in contact with the waveguide body proximal to the central section.

15. The luminaire of claim 1 , wherein the at least one structural member and the waveguide body together enclose at least one of the power circuit and the at least one LED.

16. The luminaire of claim 1 , wherein the first and second separate side sections extend beyond the at least one structural member in at least one direction transverse to the length of the waveguide body.

Assignees

• Cree Inc

Inventors

• Wilcox Kurt S
• Durkee John W
• Lay James Michael
• Heeter Shawn
• Medendorp Jr Nicholas W
• Mcbryde James

Classifications

• F21Y2103/33

  annular · CPC title

• F21S8/061

  with a non-rigid pendant, i.e. a cable, wire or chain · CPC title

• F21V7/0008

  providing for indirect lighting · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• G02B6/0048

  with stepwise taper · CPC title