Light emitting diode troffer door assembly

Patent metadata

Field	Value
Publication number	US-9494286-B2
Application number	US-201414452137-A
Country	US
Kind code	B2
Filing date	Aug 5, 2014
Priority date	Mar 7, 2012
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

A troffer door assembly has a frame assembly, a lens member and a light emitting diode (LED) assembly. The rigid brace member is affixed to the frame assembly such that the rigidity of the frame assembly is increased. Hinge members and latch members are positioned in exterior slots on the frame assembly such that the location of the hinge members and latch members can be adjusted. In this manner installed troffer light fixtures can be retrofitted by replacing the installed troffer door with the troffer door assembly as described.

First claim

The invention claimed is:

1. A troffer door assembly configured to detachably couple to a housing of a troffer light fixture, comprising:
a frame assembly including a plurality of interconnected frame members that are configured to be housed in the housing of the troffer light fixture;
a lens member retained by at least one frame member;
a brace member having a first end and a second end, wherein the first end is coupled to one of the frame members and the second end is coupled to another one of the frame members;
a plurality of LEDs coupled to the brace member; and
at least one connecting member adjustably coupled to at least one frame member, such that each connecting member is movable along the respective frame member in a longitudinal direction of the frame member to adjust the relative position of the connecting member relative to the frame member;
wherein each connecting member is configured to detachably couple the troffer door assembly to the housing of the troffer light fixture;
wherein the at least one connecting member comprises a hinge member that is adjustably coupled to a slot in one of the plurality of frame members, wherein the slot extends in the longitudinal direction of the frame member.

2. The troffer door assembly of claim 1 , wherein the slot is a channel that is provided in an exterior surface of the frame member, and wherein the hinge member is adjustably coupled to the frame member through the channel.

3. The troffer door assembly of claim 2 , wherein the at least one connecting member further includes a backing member and a fastener, wherein the backing member is movably disposed in the channel and the fastener couples the hinge member and the backing member through the channel.

4. The troffer door assembly of claim 3 , wherein the frame member having the channel receiving the backing member includes an interior structural member and two spaced apart flanges that extend inwardly from opposing ends of the interior structural member, wherein the interior structural member and the flanges define the channel, wherein the backing member is movable in the channel in the longitudinal direction, and wherein backing member is prevented from moving transversely to the longitudinal direction by the flanges and the interior structural member.

5. The troffer door assembly of claim 4 , wherein the channel is provided in the exterior surface of a lateral side of the frame member, such that an opening of the exterior surface faces the housing of the troffer light fixture.

6. The troffer door assembly of claim 1 , wherein the at least one connecting member includes a latch assembly that is adjustably coupled to a slot in another one of the plurality of the frame members, wherein each slot extends in the longitudinal direction of the respective frame member.

7. The troffer door assembly of claim 6 , wherein each slot is a channel that is provided in an exterior surface of the respective frame member, wherein the hinge member is adjustably coupled to the respective frame member through the respective channel, and wherein the latch assembly is adjustably coupled to the respective frame member through the respective channel.

8. The troffer door assembly of claim 7 , wherein the latch assembly includes a latch member, a support member movably disposed in the channel of the respective frame member, and a fastener, wherein the latch member is allowed to pivot relative to the respective frame member and is coupled to the support member through the fastener, wherein the fastener of the latch assembly engages the respective channel, and wherein the latch assembly is movable along the channel relative to the frame member.

9. The troffer door assembly of claim 8 , wherein the latch assembly and the hinge member are adjustably coupled to opposing frame members.

10. The troffer door assembly of claim 1 , wherein the LEDs are disposed on a first side of the brace member that faces toward the lens member, wherein a backing member is provided on a second side of the brace member that faces away from the lens member, and wherein the backing member is configured to provide the functionality of the LEDs.

11. The troffer door assembly of claim 1 , further comprising first and second mounting brackets coupling the first and second ends of the brace member to the respective frame members, wherein the first mounting bracket includes a first flange coupled to the first end of the brace member and a second flange coupled to the respective frame member, and wherein the second mounting bracket includes a first flange coupled to the second end of the brace member and a second flange coupled to the respective frame member.

12. A troffer door assembly configured to detachably couple to a housing of a troffer light fixture, comprising:
a frame assembly including a plurality of interconnected frame members that are configured to be housed in the housing of the troffer light fixture;
a lens member retained by at least one frame member;
a brace member having a first end and a second end, wherein the first end is coupled to one of the frame members and the second end is coupled to another one of the frame members;
a plurality of LEDs coupled to the brace member; and
at least one connecting member adjustably coupled to at least one frame member, such that each connecting member is movable along the respective frame member in a longitudinal direction of the frame member to adjust the relative position of the connecting member relative to the frame member;
wherein each connecting member is configured to detachably couple the troffer door assembly to the housing of the troffer light fixture;
wherein the at least one connecting member includes a latch assembly that is adjustably coupled to a slot in one of the plurality of the frame members, and wherein the slot extends in the longitudinal direction of the respective frame member.

13. The troffer door assembly of claim 12 , wherein the slot is a channel that is provided in an exterior surface of the frame member, and wherein the latch assembly is adjustably coupled to the frame member through the channel.

14. The troffer door assembly of claim 13 , wherein the latch assembly includes a latch member, a support member slideably disposed in the channel, and a fastener, wherein the latch member is configured to pivot relative to the frame member and is coupled to the support member through the fastener, wherein the fastener of the latch assembly engages the channel, and wherein the latch assembly is movable along the channel in the longitudinal direction relative to the frame member.

15. The troffer door assembly of claim 7 , wherein the frame member coupled to the hinge member and the frame member coupled to the latch assembly each further include a second channel provided on an exterior surface of an opposing side of the frame member relative to the first channel, and wherein each second channel receives a peripheral edge of the lens member.

16. The troffer door assembly of claim 15 , wherein each second channel is defined by two spaced apart flanges that extend inwardly from opposing ends of an interior structural member of the respective frame member, and wherein at least one of the flanges contacts the lens member to retain the lens member in the frame assembly.

17. A troffer door assembly configured to detachably couple to a housing of a troffer light fixture, comprising:
a lens member;
a frame assembly configured to be housed in the housing, the frame assembly including two pairs of spaced apart and opposing frame members, wherein each frame member incl

Assignees

• Orion Energy Systems Inc

Inventors

• Green Scott A
• Lowden Scott W
• Padilla Efrain
• Wilson George S

Classifications

• F21S4/28 Primary

  rigid, e.g. LED bars · CPC title

• F21V3/06

  characterised by the material · CPC title

• F21V29/74

  with fins or blades · CPC title

• F21K9/275

  Details of bases or housings, i.e. the parts between the light-generating element and the end caps; Arrangement of components within bases or housings (F21K9/278 takes precedence) · CPC title

• F21Y2103/10

  comprising a linear array of point-like light-generating elements · CPC title