Lighting device and housing therefor

• US 9,500,344 B2
• Filed: 03/21/2014
• Issued: 11/22/2016
• Est. Priority Date: 03/21/2014
• Status: Active Grant

• Current Assignee: G&G LED Lighting
• Original Assignee: G&G LED Lighting
• Inventors: Baright, Jason
• Primary Examiner(s): COUGHLIN, ANDREW J
• Application Number:
  US14/222,572
• Publication Number:
  US 20150267899A1
• Time in Patent Office: 977 Days
• US Class Current: 1/1
• CPC Class Codes: F21S 4/28 rigid, e.g. LED bars
• CPC Class Codes: F21V 15/01 Housings, e.g. material or assembling of housing parts F21V15/02 takes precedence housings forming signs or letters G09F13/04
• CPC Class Codes: F21V 15/015 Devices for covering joints between adjacent lighting devices; End coverings
• CPC Class Codes: F21V 17/164 the parts being subjected to bending, e.g. snap joints
• CPC Class Codes: F21V 19/003 Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
• CPC Class Codes: F21V 19/004 by deformation of parts or snap action mountings, e.g. using clips
• CPC Class Codes: F21V 19/0045 by tongue and groove connections, e.g. dovetail interlocking means fixed by sliding
• CPC Class Codes: F21V 21/005 for several lighting devices in an end-to-end arrangement, i.e. light tracks
• CPC Class Codes: F21V 29/85 characterised by the material liquid coolants F21V29/56
• CPC Class Codes: F21V 29/87 Organic material, e.g. filled polymer composites; Thermo-conductive additives or coatings therefor
• CPC Class Codes: F21V 29/89 Metals
• CPC Class Codes: F21V 3/02 characterised by the shape
• CPC Class Codes: F21V 31/00 Gas-tight or water-tight arrangements
• CPC Class Codes: F21V 31/005 Sealing arrangements therefor
• 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

Embodiments of the invention relate generally to lighting devices and, more particularly, to lighting devices having tubular housings containing light emitting devices on a circuit board, as well as housings for such lighting devices. In one embodiment, the invention provides a lighting device comprising: a circuit board including a light emitting device; and an elongate substantially tubular housing for enclosing the circuit board, the tubular housing including: a substantially circular interior; a support shelf extending across the substantially circular interior to support the circuit board; and a circuit board restraining member restraining the circuit board to the support shelf.

Claims

1. A lighting device comprising:

a circuit board including a light emitting device; and

an elongate substantially tubular housing for enclosing the circuit board, the housing comprising a first co-extruded portion and a second co-extruded portion and including;

a substantially continuous exterior;

a substantially circular interior;

a support shelf within the first co-extruded portion and extending across the substantially circular interior to support the circuit board; and

a circuit board restraining member within the second co-extruded portion and restraining the circuit board to the support shelf.

2. The lighting device of claim 1, wherein the light emitting device includes a light emitting diode (LED).

3. The lighting device of claim 1, wherein the first co-extruded portion includes a thermally-conductive material.

4. The lighting device of claim 3, wherein the thermally-conductive material is selected from a group consisting of:

a thermoplastic polycarbonate, aluminum, copper, aluminum alloys, and copper alloys.

5. The lighting device of claim 1, wherein the second co-extruded portion includes a transparent or translucent material.

6. The lighting device of claim 1, further comprising:

a stiffening member embedded within the first co-extruded portion.

7. The lighting device of claim 6, wherein the stiffening member is thermally-conductive.

8. The lighting device of claim 6, wherein the stiffening member is selected from a group consisting of:

aluminum, copper, and alloys thereof.

9. The lighting device of claim 6, wherein the stiffening member extends along the support shelf and into opposing sides of the first co-extruded portion.

10. The lighting device of claim 1, wherein the elongate tubular housing includes a plurality of elongate tubular housings coupled at respective ends thereof by a waterproof joint, each housing containing a circuit board.

11. The lighting device of claim 1, wherein the circuit board restraining member comprises a pair of tabs integral with the substantially circular interior for exerting a force against the circuit board in a radial direction but permitting movement of the circuit board in an axial direction, with respect to the elongate, substantially tubular housing.

12. A lighting device comprising:

a circuit board including a light emitting device; and

an elongate substantially tubular housing for enclosing the circuit board, the housing comprising a first co-extruded portion and a second co-extruded portion and including;

a substantially continuous exterior;

a substantially circular interior;

a first support member within the first co-extruded portion and extending inward from the substantially circular interior to support the circuit board; and

a second support member within the first co-extruded portion and extending inward from the substantially circular interior to support the circuit board, the second support member being positioned substantially opposite the first support member; and

at least one circuit board restraining member within the second co-extruded portion and restraining the circuit board against at least one of the first and second support members.

13. The lighting device of claim 12, wherein the light emitting device includes a light emitting diode (LED).

14. The lighting device of claim 12, further comprising:

a stiffening member embedded within the first co-extruded portion.

15. The lighting device of claim 12, wherein the circuit board restraining member comprises a pair of tabs integral with the substantially circular interior for exerting a force against the circuit board in a radial direction but permitting movement of the circuit board in an axial direction, with respect to the elongate, substantially tubular housing.

16. An elongate tubular housing for enclosing a lighting device, the elongate tubular housing comprising a first co-extruded portion and a second co-extruded portion and including:

a substantially continuous exterior;

a substantially circular interior;

a support shelf within the first co-extruded portion and extending across at least a portion of a diameter of the substantially circular interior to support a lighting device circuit board; and

a circuit board restraining member within the second co-extruded portion and to restrain a circuit board against the support shelf.

17. The elongate tubular housing of claim 16, wherein the first co-extruded portion of the substantially tubular housing includes a thermally-conductive material selected from a group consisting of:

a thermoplastic polycarbonate, aluminum, copper, aluminum alloys, and copper alloys.

18. The elongate tubular housing of claim 16, wherein the second co-extruded portion of the substantially tubular housing includes a transparent or translucent material selected from a group consisting of:

a thermoplastic polycarbonate and a glass.

19. The elongate tubular housing of claim 17, further comprising:

a stiffening member embedded within the first co-extruded portion.

20. The elongate tubular housing of claim 16, wherein the circuit board restraining member comprises a pair of tabs integral with the substantially circular interior for exerting a force against the circuit board in a radial direction but permitting movement of the circuit board in an axial direction, with respect to the elongate, substantially tubular housing.