Integrated linear light engine

• US 9,291,316 B2
• Filed: 03/15/2013
• Issued: 03/22/2016
• Est. Priority Date: 11/08/2012
• Status: Active Grant

• Current Assignee: IDEAL Industries Lighting, LLC (Ideal Industries Incorporated)
• Original Assignee: CREE Incorporated (Wolfspeed, Inc.)
• Inventors: Dixon, Mark Edward, Durkee, John, Medendorp, Nicholas W. Jr., Pickard, Paul Kenneth, Van De Ven, Antony
• Primary Examiner(s): HINES, ANNE M
• Application Number:
  US13/840,812
• Publication Number:
  US 20140126197A1
• Time in Patent Office: 1,103 Days
• Field of Search: 362/218, 362/217.14
• US Class Current: 1/1
• CPC Class Codes: F21L 4/00 Electric lighting devices with self-contained electric batteries or cells
• CPC Class Codes: F21S 8/063 with a rigid pendant, i.e. a pipe or rod
• CPC Class Codes: F21V 21/00 Supporting, suspending, or attaching arrangements for lighting devices F21V17/00, F21V19/00 take precedence; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q, stands for supporting apparatus or articles in general F16M11/00; Hand grips
• CPC Class Codes: F21V 21/112 Fixing lighting devices to pendants F21V21/002 takes precedence
• CPC Class Codes: F21V 23/023 Power supplies in a casing F21V23/003 takes precedence
• CPC Class Codes: F21V 3/02 characterised by the shape
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: F21V 7/00 Reflectors for light sources characterised by cooling arrangements F21V29/505
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

This disclosure relates to light engines for use in lighting fixtures, such as troffer-style lighting fixtures. Light engines according to the present disclosure have integrated features that eliminate the need for additional components such as a Printed Circuit Board (PCB), a heat sink, a cover portion, a lens and/or a reflective element. Devices according to this disclosure can comprise a rigid body, conductive elements arranged into electrical pathways and light sources such as light emitting diodes (LEDs). Devices according to this disclosure can further comprise integrated cover, lens and/or reflective element features. Methods for the manufacture of such devices are also disclosed.

Claims

1. A light engine, comprising:

an elongated housing comprising an integrated lens and at least one reflective body portion; and

an elongated lighting element internal to said elongated housing comprising solid state emitters, wherein said solid state emitters are on said reflective body portion and positioned to emit a majority of light such that said light initially impinges on said integrated lens when said lens is in a closed position.

2. The light engine of claim 1, wherein said integrated lens and said at least one reflective body portion are coextruded.

3. The light engine of claim 1, wherein said integrated lens is light transmissive.

4. The light engine of claim 1, wherein said at least one reflective body portion comprises sloped portions.

5. The light engine of claim 1, wherein said elongated lighting element comprises conductive elements integrated with said housing and in communication with said solid state emitters, said conductive elements comprising electrical pathways between said solid state emitters.

6. The light engine of claim 1, wherein said solid state emitters comprise LED packages with heat dissipating features.

7. The light engine of claim 6, wherein said at least one reflective body portion is coextruded with said integrated lens.

8. The light engine of claim 1, wherein said elongated lighting element comprises LEDs and a reflective element.

9. The light engine of claim 1, wherein said elongated lighting element comprises conductive elements.

10. The light engine of claim 1, wherein said elongated housing further comprises a connecting portion to allow for attachment of said light engine to other objects.

11. The light engine of claim 10, wherein said connecting portion is self-coupling.

12. A light engine, comprising:

an elongated housing comprising a co-extruded transmissive upper portion and a reflective portion, wherein said transmissive upper portion is movable between an open position and a closed position; and

light emitting diodes (LEDs) within said housing such that said LEDs are on said reflective portion and positioned to emit a majority of light such that said light initially impinges on said transmissive upper portion when said lens in is said closed position.

13. The light engine of claim 12, further comprising conductive elements forming electrical pathways between said LEDs.

14. The light engine of claim 12, further comprising a reflective element internal to said elongated housing.

15. The light engine of claim 14, wherein said reflective element is coextruded with said elongated housing.

16. The light engine of claim 12, wherein said elongated housing further comprises a connecting portion to allow for attachment of said light engine to other objects.

17. The light engine of claim 16, wherein said connecting portion is self-coupling.

18. A light fixture comprising:

a light engine, comprising;

an elongated housing comprising integrated lens and reflective body portions;

an elongated lighting element internal to said elongated housing, wherein said elongated housing comprises at least one elongated connecting portion configured to cooperate with an external mounting structure enabling connection along the length of said elongated housing, said at least one connecting portion integrated with said elongated housing.

19. The light fixture of claim 18, wherein said at least one connecting portion and said light engine mounting structure cooperate to mount said light engine in its operation location.

20. The light fixture of claim 18, wherein said at least one connecting portion comprises a self-connecting feature.

21. The light fixture of claim 18, wherein said at least one connecting portion comprises a snap fit feature.