LED troffer lens assembly mount

• US 10,302,262 B2
• Filed: 03/27/2017
• Issued: 05/28/2019
• Est. Priority Date: 02/06/2017
• Status: Active Grant

• Current Assignee: IDEAL Industries Lighting, LLC (Ideal Industries Incorporated)
• Original Assignee: CREE Incorporated (Wolfspeed, Inc.)
• Inventors: Huang, Yaote, Bowden, Jr., James Hugh, Progl, Curt
• Primary Examiner(s): Garlen, Alexander K
• Application Number:
  US15/469,868
• Publication Number:
  US 20180224079A1
• Time in Patent Office: 792 Days
• CPC Class Codes: F21S 8/026 intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
• 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: F21V 17/105 using magnets
• CPC Class Codes: F21V 3/02 characterised by the shape
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A light fixture includes a LED assembly and a housing. A first end cap is permanently connected to the troffer. A lens assembly comprises a lens covering the LED assembly and a second end cap, the lens having a first end connected to the second end cap and a second end releasably connected to the first end cap. The second end cap is releasably connected to the housing such that the lens and the second end cap are releasably mounted to the housing as a unit. The lens has a first longitudinal edge and a second longitudinal edge where a first magnetic strip is attached to the first longitudinal edge and a second magnetic strip is attached to the second longitudinal edge. The first and second magnetic strips are magnetically adhered to the housing.

Claims

1. A troffer light fixture, comprising:

a LED assembly comprising at least one LED operable to emit light when energized through an electrical path;

a housing supporting the LED assembly, the housing comprising a first end cap permanently connected to the housing; and

a lens assembly comprising a lens covering the at least one LED and a second end cap, the lens having a first end releasably connected to the first end cap and a second end permanently connected to the second end cap, the second end cap being releasably connected to the housing such that the lens and the second end cap are releasably mounted to the housing as a unit and the lens is releasably mounted to the first end cap.

2. The light fixture of claim 1, wherein the lens comprises a first longitudinal edge and a second longitudinal edge where a first magnetic strip is attached to the first longitudinal edge and a second magnetic strip is attached to the second longitudinal edge.

3. The light fixture of claim 2, wherein the first magnetic strip and the second magnetic strip are magnetically adhered to the housing.

4. The light fixture of claim 2, wherein the first magnetic strip and the second magnetic strip extend uninterrupted for the length of the first longitudinal edge and the second longitudinal edge adjacent the housing.

5. The light fixture of claim 2, wherein the first magnetic strip and the second magnetic strip each comprise a magnet and a reflective layer.

6. The light fixture of claim 5, wherein the reflective layer comprises a polyethylene foam.

7. The light fixture of claim 1, wherein the second end cap is releasably mounted to the housing by a pair of deformable, resilient first engagement members on one of the housing and the second end cap that releasably engages a second engagement member on the other one of the housing and the second end cap.

8. The light fixture of claim 7, wherein the second engagement member comprises a rigid member.

9. A light fixture, comprising:

a LED assembly comprising at least one LED operable to emit light when energized through an electrical path;

a housing supports the LED; and

a lens covering the at least one LED, the lens having a peripheral edge where a magnetic strip is attached to the peripheral edge to form a seal with the housing wherein the magnetic strip comprises a magnet and a reflective white layer, the reflective white layer being coextensive with the magnet and being disposed between the magnet and the lens, the lens having a first end releasably connected to a first end cap and a second end permanently connected to a second end cap.

10. The light fixture of claim 9, wherein the magnetic strip is magnetically adhered to the housing.

11. The light fixture of claim 9, wherein the magnetic strip extends substantially uninterrupted for the length of the peripheral edge.

12. The light fixture of claim 11, wherein the magnetic strip extends uninterrupted for the length of the peripheral edge.

13. The light fixture of claim 11, wherein a mounting mechanism attaches the lens to the housing and the magnetic strip extends uninterrupted for the length of the peripheral edge except where the mounting mechanism is located.

14. The light fixture of claim 9, wherein the reflective layer comprises a polyethylene foam.

15. A troffer light fixture, comprising:

a LED assembly comprising at least one LED operable to emit light when energized through an electrical path;

a housing supporting the LED assembly;

a lens covering the at least one LED, the lens having a first end releasably connected to a first end cap and a second end permanently connected to a second end cap and a first longitudinal edge and a second longitudinal edge extending between the first end and the second end where a first magnetic strip is attached to the first longitudinal edge and a second magnetic strip is attached to the second longitudinal edge wherein the first magnetic strip and the second magnetic strip each comprise a magnet and a reflective layer and the reflective layer comprises a deformable, compressible layer where the first magnetic strip and the second magnetic strip are magnetically adhered to the housing, the magnet being of sufficient energy that the deformable, compressible layer is at least partially deformed and compressed between the magnet and the housing.

16. The light fixture of claim 15, wherein the first magnetic strip and the second magnetic strip extend uninterrupted for the length of the first longitudinal edge and the second longitudinal edge.

17. The light fixture of claim 15, wherein the deformable layer comprises a polyethylene foam.