LED luminaire for display cases

• US 8,678,616 B2
• Filed: 04/05/2011
• Issued: 03/25/2014
• Est. Priority Date: 07/21/2009
• Status: Active Grant

• Current Assignee: ABL IP Holding LLC (Acuity Brands, Inc.)
• Original Assignee: ABL IP Holding LLC (Acuity Brands, Inc.)
• Inventors: Marquardt, Craig Eugene, Ibanez, Miguel Angel, Sicking, Daniel Edward, Miller, Michael Ray
• Primary Examiner(s): Patel, Vip
• Application Number:
  US13/080,203
• Publication Number:
  US 20110199767A1
• Time in Patent Office: 1,085 Days
• Field of Search: 362/235, 362/238, 362240-243, 362/247, 362/247.02, 362/247.06, 362/341, 362/345
• US Class Current: 362/235
• CPC Class Codes: A47F 3/001 Devices for lighting, humidifying, heating, ventilation
• 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 17/16 by deformation of parts; Snap action mounting
• CPC Class Codes: F21V 21/02 Wall, ceiling, or floor bases; Fixing pendants or arms to the bases F21V21/08 takes precedence; bases for movable standing lamps F21V21/06
• CPC Class Codes: F21V 25/00 Safety devices structurally associated with lighting devices gas- tight or water-tight arrangements F21V31/00; in general F16P; protective circuit arrangements per se H02H7/00
• CPC Class Codes: F21V 29/15 Thermal insulation
• CPC Class Codes: F21V 29/505 of reflectors
• CPC Class Codes: F21V 29/507 of means for protecting lighting devices from damage, e.g. housings
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• 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 7/16 with provision for adjusting the curvature
• 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]

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 the reflector or is mounted directly on the LED mounting portion over the plurality of LEDs. 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,

wherein the lens is held in place in the luminaire between the LED mounting portion and the reflector or is mounted directly on the LED mounting portion over the plurality of LEDs, and

wherein the reflector is repositionable within the luminaire so as to allow the direction of light exiting the luminaire to be adjusted.

2. The luminaire of claim 1, wherein the luminaire is mounted on a shelf of a display.

3. The luminaire of claim 2, wherein a thermal insulation pad is located between the luminaire and the shelf.

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

5. The luminaire of claim 4, wherein the LED mounting portion and reflector are attached to each other with one or more countersunk rivets.

6. The luminaire of claim 1, wherein the luminaire is attached to a shelf of a display with one or more countersunk rivets.

7. The luminaire of claim 1, wherein one or more surfaces of the luminaire have a water shedding surface for directing condensation away from the plurality of LEDs and off the luminaire.

11. The luminaire of claim 1, wherein the luminaire comprises at least a first pair of grooves and a second pair of grooves, wherein the reflector may be retained by the first pair of grooves to reflect light out of the luminaire in a first direction and wherein the reflector may be retained by the second pair of grooves to reflect light out of the luminaire in a second direction different from the first direction.

8. A luminaire comprising:

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

a reflector;

a lens; and

a thermal insulation pad for mounting the luminaire to a surface,

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

wherein the reflector is repositionable within the luminaire so as to allow the direction of light exiting the luminaire to be adjusted.

9. The luminaire of claim 8, wherein the surface is a shelf of a refrigerated display.

12. The luminaire of claim 8, wherein the luminaire comprises at least a first pair of grooves and a second pair of grooves, wherein the reflector may be retained by the first pair of grooves to reflect light out of the luminaire in a first direction and wherein the reflector may be retained by the second pair of grooves to reflect light out of the luminaire in a second direction different from the first direction.

10. 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, and wherein the reflector is repositionable within the luminaire so as to allow the direction of light exiting the luminaire to be adjusted.

13. The luminaire of claim 10, wherein the luminaire comprises at least a first pair of grooves and a second pair of grooves, wherein the reflector may be retained by the first pair of grooves to reflect light out of the luminaire in a first direction and wherein the reflector may be retained by the second pair of grooves to reflect light out of the luminaire in a second direction different from the first direction.