LED Luminaire for Display Cases

• US 20110019410A1
• Filed: 07/21/2010
• Published: 01/27/2011
• Est. Priority Date: 07/21/2009
• Status: Abandoned Application

• Current Assignee: ABL IP Holding LLC (Acuity Brands, Inc.)
• Original Assignee: ABL IP Holding LLC (Acuity Brands, Inc.)
• Inventors: Miller, Michael Ray, Ibanez, Miguel Angel, Marquardt, Craig Eugene, Sicking, Daniel Edward
• Application Number:
  US12/840,704
• Publication Number:
  US 20110019410A1
• Time in Patent Office: Days
• US Class Current: 362/235
• CPC Class Codes: F21S 4/28 rigid, e.g. LED bars
• CPC Class Codes: F21V 15/013 the housing being an extrusion
• CPC Class Codes: F21V 29/505 of reflectors
• CPC Class Codes: F21V 29/75 with fins or blades having different shapes, thicknesses or spacing
• CPC Class Codes: F21V 29/76 with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
• CPC Class Codes: F21V 7/0008 providing for indirect lighting
• CPC Class Codes: F21V 7/24 characterised by the material
• CPC Class Codes: F21V 7/28 characterised by coatings
• CPC Class Codes: F21W 2131/305 for refrigerators
• CPC Class Codes: F21W 2131/405 for shop-windows or displays
• 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]
• CPC Class Codes: Y10T 29/49716 Converting

Abstract

A lighting luminaire for use in a refrigerated display case includes an LED mounting portion comprising a plurality of light emitting diodes (“LEDs”) mounted thereon, a reflector, and a lens. The LED mounting portion and reflector are sized and arranged to form a reflective cavity for diffusing and directing light from the plurality of LEDs through the lens and out of the luminaire. The LED mounting portion and reflector are either attached to each other as separate components or are integrally formed. The lens is held in place in the luminaire between the LED mounting portion and reflector. The LED mounting portion and/or reflector have a reflective surface for reflecting light emitted by the LEDs. Methods for retrofitting an existing luminaire in a refrigerated display with an LED luminaire are also provided.

Claims

1. A luminaire comprising:

an LED mounting portion comprising a plurality of LEDs mounted thereon;

a reflector; and

a lens,

wherein the LED mounting portion and reflector are sized and arranged to form a reflective cavity for diffusing and directing light from the plurality of LEDs through the lens and out of the luminaire.

2. The luminaire of claim 1, wherein the LED mounting portion and reflector are separate components and are secured to each other.

3. The luminaire of claim 2, wherein the LED mounting portion comprises a slot for receiving the reflector and securing the reflector thereto.

4. The luminaire of claim 1, wherein the LED mounting portion and reflector are integrally formed.

5. The luminaire of claim 1, wherein the lens is held in place in the luminaire between the LED mounting portion and the reflector.

6. The luminaire of claim 1, wherein the lens is clear.

7. The luminaire of claim 1, wherein the lens is refractive with a symmetrical, asymmetrical or non-symmetrical light output.

8. The luminaire of claim 1, wherein the reflector comprises a reflective inner surface for reflecting light from the plurality of LEDs.

9. The luminaire of claim 8, wherein the reflective inner surface comprises a reflective paint or reflective liner.

10. The luminaire of claim 1, wherein at least one of the LED mounting portion and the reflector is formed from extruded aluminum.

11. The luminaire of claim 1, wherein the plurality of LEDs are arranged as a strip of LEDs, and wherein the strip of LEDs is attached to the LED mounting portion of the luminaire.

12. The luminaire of claim 2, wherein the LED mounting portion and the reflector are secured to each other via engagement of a ball or socket on the LED mounting portion with a corresponding socket or ball on the reflector.

13. The luminaire of claim 1, wherein the luminaire further comprises one or more fins for dissipating heat generated by the plurality of LEDs away from the luminaire.

14. The luminaire of claim 1, wherein the luminaire further comprises at least one void for promoting air flow along the length of the luminaire.

15. The luminaire of claim 1, further comprising at least one offset, wherein in use the offset is positioned between the luminaire and a surface upon which the luminaire is installed for minimizing contact between the luminaire and the surface.

16. The luminaire of claim 1, further comprising at least one end cap positioned on an end of the luminaire.

17. A luminaire for a refrigerated display case, comprising

an LED mounting portion having a plurality of LEDs mounted thereon and comprising a first slot and a second slot;

a reflector comprising a first edge and a second edge;

a lens comprising a first edge and a second edge; and

at least one end cap mounted on one end of the luminaire;

wherein the first slot of the LED mounting portion engages the first edge of the reflector, the second slot of the LED mounting portion engages the second edge of the lens, and the second edge of the reflector snaps over the first edge of the lens so that the LED mounting portion, reflector and lens form a reflective cavity for diffusing and directing light from the plurality of LEDs through the lens and out of the luminaire.

18. A method for retrofitting an existing luminaire in a refrigerated display with a light emitting diode luminaire, comprising:

removing the existing luminaire from the refrigerated display;

providing at least one light emitting diode luminaire comprising;

an LED mounting portion comprising a plurality of LEDs mounted thereon;

a reflector; and

a lens,

wherein the LED mounting portion and reflector are sized and arranged to form a reflective cavity for diffusing and directing light from the plurality of LEDs through the lens and out of the luminaire; and

installing the light emitting diode lighting luminaire into the refrigerated display.