Reflectors and reflector orientation feature to prevent non-qualified trim

Patent metadata

Field	Value
Publication number	US-9523490-B2
Application number	US-201615073395-A
Country	US
Kind code	B2
Filing date	Mar 17, 2016
Priority date	May 7, 2012
Publication date	Dec 20, 2016
Grant date	Dec 20, 2016

Abstract

The luminaire includes a light emitting diode (LED) module that includes a heat sink with an outer wall defining a top cavity and a bottom cavity and a mounting flange generally positioned along the bottom of the outer wall. A LED light source is positioned within the bottom cavity and in thermal communication with the heat sink. The bottom surface of the mounting flange includes one or more alignment features or keys extending out from the bottom surface. A trim having a corresponding alignment aperture is matingly engaged by positioning all or a portion of the alignment feature into the alignment aperture to ensure proper orientation of the trim with the LED module and to provide sufficient surface area for good thermal transfer between the heat sink and the trim.

First claim

We claim:

1. A luminaire comprising:
a light source;
a heat sink coupled to the light source, the heat sink comprising:
a top surface and a bottom surface that is opposite to the top surface; and
an alignment feature integral with the heat sink and protruding from the bottom surface of the heat sink; and

a trim removably coupled to the heat sink, wherein the trim comprises:
a first aperture configured to receive light from the light source, a second aperture opposite to the first aperture, and a wall disposed between the first and second aperture, wherein an inner surface of the wall defines a light passageway for the light emitted by the light source; and
a top flange extending laterally outward from an upper end of the wall and surrounding the first aperture, the top flange comprising one or more alignment apertures positioned on the top flange and extending through at least a portion of a thickness of the top flange to matingly engage the alignment feature of the heat sink, the alignment aperture corresponding to a size and shape of the alignment feature of the heat sink,
wherein the heat sink is removably coupled to and abuts the trim when the alignment feature of the heat sink matingly engages at least one of the one or more alignment apertures of the trim.

2. The luminaire of claim 1 , wherein the light source is a light emitting diode (LED) light source.

3. The luminaire of claim 1 , wherein the trim further comprises a bottom flange extending laterally outward from a bottom end of the wall and surrounding the second aperture for emitting light received at the first aperture.

4. The luminaire of claim 3 , wherein the bottom flange is a trim ring, wherein the trim ring is configured to be disposed at the opening of a surface when the luminaire is installed at the surface.

5. The luminaire of claim 1 , wherein the inner surface of the wall comprises a baffle disposed adjacent to a bottom end of the wall and a trim ring.

6. The luminaire of claim 1 , wherein the alignment aperture is a through-hole.

7. The luminaire of claim 1 , wherein the alignment aperture and the alignment feature are elliptical in shape.

8. The luminaire of claim 1 , wherein the heat sink further comprises a channel in the bottom surface of the heat sink, the channel surrounding at least a portion of a perimeter of the alignment feature.

9. The luminaire of claim 1 , wherein the alignment aperture comprises a notch in the top end of the wall.

10. A trim for a recessed light fixture, comprising
a top wall extending laterally outward from an upper end of the trim and surrounding a first aperture configured to receive a light source, the top wall comprising:
a top surface and a bottom surface that is opposite to the top surface; and
an alignment feature extending through at least a portion of a thickness of the top wall between the top surface and the bottom surface for engaging a corresponding alignment feature of a heat sink, wherein the heat sink alignment feature is integral with the heat sink and protrudes from a bottom surface of a mounting flange of the heat sink in a direction of a light path of the light source; and

a trim body disposed between the upper end and a lower end of the trim, wherein the bottom surface of the mounting flange of the heat sink is disposed on and abuts the top surface of the top wall of the trim when the alignment feature of the trim engages with the corresponding alignment feature of the heat sink.

11. The trim of claim 10 , wherein the trim further comprises a bottom wall at a lower end of the trim surrounding a second aperture for emitting light received at the first aperture, and
wherein the bottom wall comprises a trim ring that extends laterally outward from the lower end adjacent to the bottom wall.

12. The trim of claim 10 , wherein the trim further comprises a bottom wall at a lower end of the trim surrounding a second aperture, and wherein the bottom wall comprises a trim ring that extends outward and upward from the lower end of the trim body at an angle to the trim body.

13. The trim of claim 10 , wherein the alignment feature is a through hole.

14. The trim of claim 10 , wherein the alignment feature comprises a depression in the top wall that extends partially through the thickness of the top wall between the top surface and the bottom surface of the top wall.

15. A luminaire comprising:
a heat sink comprising:
a flange at a bottom end of the heat sink, wherein a portion of the flange includes a ramped surface; and
an alignment key that is integral with the heat sink and protrudes from a bottom surface of the flange in a direction substantially perpendicular to the flange; and

a trim comprising:
an alignment feature that extends from a top end of the trim towards a bottom end of the trim;
a bottom wall extending laterally inward from the bottom end of the trim, the bottom wall including an elongated alignment recess for engaging the corresponding alignment key of the heat sink,
wherein the heat sink is coupled to the trim when a bottom surface of the alignment feature engages the ramped surface.

16. The luminaire of claim 15 , wherein the elongated alignment recess includes a channel for engaging the corresponding alignment key of the heat sink as the heat sink rotates within the trim.

17. The luminaire of claim 15 , wherein the trim further comprises a trim ring extending laterally outward from the bottom end of the trim.

18. The luminaire of claim 15 , wherein the trim is a gimbal trim that includes an inner collar and a rotational collar.

19. The luminaire of claim 18 , wherein the rotational collar further comprises a tab extending laterally inward from a top surface of the rotational collar toward a light receiving aperture at the top end of the trim, wherein the tab extends over a top surface of the inner collar of the trim and impacts the top surface of the inner collar thereby limiting a tilt of the inner collar and the heat sink.

Assignees

• Cooper Technologies Co

Inventors

• Kathawate Jyoti Gururaj
• Thompson Iii Evans Edward
• Green Russell Bryant
• Harpenau Kevin Roy

Classifications

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21S8/024

  intended to be recessed in a wall or like vertical structure, e.g. building facade · CPC title

• F21S8/026 Primary

  intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling · CPC title

• F21V29/70 Primary

  characterised by passive heat-dissipating elements, e.g. heat-sinks · CPC title

• F21V29/503

  of light sources (cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H10H20/858) · CPC title