Full-cutoff LED luminaire with front-pivot power door and heat sink with refractor mounting

• US 9,423,110 B1
• Filed: 08/29/2013
• Issued: 08/23/2016
• Est. Priority Date: 08/29/2013
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Cooper Technologies Company (Eaton Corporation PLC.)
• Inventors: Bednarick, Ronald Joseph, Newton, Chad Stuart, Gibbs, Anthony Ryan
• Primary Examiner(s): COUGHLIN, ANDREW J
• Application Number:
  US14/014,200
• Time in Patent Office: 1,090 Days
• US Class Current: 1/1
• CPC Class Codes: F21S 8/00 Lighting devices intended for fixed installation F21S9/00, F21S10/00 take precedence; using a string or strip of light sources F21S4/00
• 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 17/06 the fastening being onto or by the lampholder
• CPC Class Codes: F21V 17/12 by screwing
• CPC Class Codes: F21V 17/18 Latch-type fastening, e.g. with rotary action
• CPC Class Codes: F21V 17/20 by toggle-action levers
• CPC Class Codes: F21V 19/0035 the fastening means being capable of simultaneously attaching of an other part, e.g. a housing portion or an optical component
• CPC Class Codes: F21V 21/116 Fixing lighting devices to arms or standards F21V21/002 takes precedence
• CPC Class Codes: F21V 23/002 Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
• CPC Class Codes: F21V 23/009 the casing being inside the housing of the lighting device
• CPC Class Codes: F21V 23/0464 the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors
• CPC Class Codes: F21V 23/06 the elements being coupling devices , e.g. connectors
• CPC Class Codes: F21V 29/503 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 H01L33/64
• CPC Class Codes: F21V 29/75 with fins or blades having different shapes, thicknesses or spacing
• CPC Class Codes: F21V 29/77 with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
• CPC Class Codes: F21V 29/773 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21W 2131/10 Outdoor lighting
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

The present disclosure provides an LED luminaire capable of providing full cutoff illumination in a base configuration, without the addition of reflectors or refractors. The LED luminaire is also interchangeably couplable to one or more different reflectors and refractors. In certain example embodiments, the present disclosure provides a dusk to dawn luminaire operable as a full cutoff luminaire in a base configuration and which is also compatible with an American Nation Standards Institute (ANSI) dusk to dawn reflector/refractor assembly. In an example embodiment, the LED luminaire also includes a housing with a front pivoting door configured to swing away from a mounting structure when opened.

Claims

1. A full cutoff luminaire, comprising:

a housing comprising an open side and a mounting end;

a power door coupled to the open side of the housing via a hinge at a first end of the power door and a releasable coupling feature elsewhere on the power door;

a heat sink coupled to the first end of the power door opposite the housing,

wherein the heat sink includes a top surface, a bottom surface opposite to the top surface, a heat sink body extending between the top surface and the bottom surface, and a plurality of heat sink fins extending radially outward from the heat sink body,

wherein each heat sink fin extends from the top surface towards the bottom surface of the heat sink,

wherein at least one heat sink fin of the plurality of heat sink fins has a hooked portion,

wherein the hooked portion of the at least one heat sink fin is configured to engage a latching mechanism of a refractor or a reflector to couple the refractor or the reflector to the heat sink via the latching mechanism, and

wherein the top surface of the heat sink is attached to the power door; and

at least one light source mounted to the bottom surface of the heat sink opposite the power door via a circuit board disposed between the bottom surface of the heat sink and the at least one light source,

wherein the power door swings away from the housing and mounting end, pivoting at the hinge, when the releasable coupling feature is released.

2. The full cutoff luminaire of claim 1, wherein the heat sink further comprises at least one attachment feature configured to optionally couple the heat sink with the refractor or the reflector via fasteners.

3. The full cutoff luminaire of claim 2, wherein the heat sink is coupled to an American National Standards Institute (ANSI) standard reflector/refractor assembly via the at least one attachment feature.

4. The full cutoff luminaire of claim 1, wherein the mounting end of the housing comprises an internal wall configured to bias a mounting bracket.

5. The full cutoff luminaire of claim 1, further comprising at least one optic disposed over the at least one light source and coupled to the heat sink.

6. The full cutoff luminaire of claim 1, further comprising an LED driver disposed within the housing and electrically coupled to the at least one light source through the heat sink.

7. The full cutoff luminaire of claim 1, further comprising a photocell module coupled to the housing and configured to control the at least one light source according to an ambient light level.

8. A full cutoff luminaire, comprising:

a light fixture comprising;

a housing comprising a cup component of a hinge;

a heat sink coupled to the housing,

wherein the heat sink includes a top surface, a bottom surface opposite to the top surface, a heat sink body extending between the top surface and the bottom surface, and a plurality of heat sink fins extending radially from the heat sink body,

wherein the heat sink further comprises at least one attachment feature configured to optionally couple the heat sink to one or more different reflectors or refractors, and

wherein the housing comprises a power door to which attached to the top surface of the heat sink opposite the housing such that the power door is disposed in between the housing and the heat sink,

wherein the power door comprises an arm component of the hinge at a first end of the power door and a releasable attachment mechanism at a second end of the power door that is opposite to the first end,

wherein the arm component of the hinge is coupled to the cup component of the hinge on the housing such that the power door is hingedly coupled to the housing via the hinge at the first end of the power door and coupled to the housing via the releasable coupling feature at the second end of the power door; and

wherein the top surface of the heat sink is coupled to the first end of the power door that is adjacent the hinge and opposite to the second end of the power door that comprises the releasable attachment mechanism;

at least one light source attached to the bottom surface of the heat sink opposite the housing; and

a mounting end coupled to the housing adjacent the second end of the power door.

9. The full cutoff luminaire of claim 8, wherein the power door swings away from the mounting end, pivoting at the hinge, when the coupling feature is released.

10. The full cutoff luminaire of claim 8, wherein the heat sink is configured to optionally couple to an American National Standards Institute (ANSI) standard dusk to dawn reflector/refractor assembly via the at least one attachment feature.

11. The full cutoff luminaire of claim 8, wherein the heat sink comprises an inner groove configured to receive and retain a lipped portion of the one or more different reflectors or refractors.

12. The full cutoff luminaire of claim 8, wherein the heat sink comprises one or more threaded screw-holes configured to align with corresponding screw-holes in the one or more different reflectors or refractors, and receive and retain a screw therethrough.

13. The full cutoff luminaire of claim 8, wherein the light fixture is a full cutoff light fixture when the heat sink is not coupled to the one or more different reflectors or refractors.

14. The full cutoff luminaire of claim 8, wherein the at least one light source comprises at least one LED.

15. The full cutoff luminaire of claim 8, further comprising:

an LED optic coupled to the heat sink, the LED optic fabricated from a polycarbonate material.

16. The full cutoff luminaire of claim 8, further comprising:

an LED driver disposed within the housing, wherein the LED driver is electrically coupled and provides power to the at least one light source via one or more wires, the wires traversing the heat sink.

17. A luminaire, comprising:

a housing comprising an open side and a mounting end;

a power door coupled to the open side of the housing via a hinge at a first end of the power door and a releasable coupling feature elsewhere on the power door, wherein the power door swings away from the mounting end, pivoting at the hinge, when the coupling feature is released;

a heat sink comprising a top surface, a bottom surface opposite to the top surface, a heat sink body extending between the top surface and the bottom surface, and a plurality of heat sink fins extending radially from the heat sink body,

wherein the top surface of the heat sink is coupled to the power door opposite the housing and adjacent the first end of the power door and the hinge, wherein the heat sink further comprises at least one attachment feature configured to optionally couple the heat sink to one or more types of reflectors or refractors; and

at least one light source mounted to the bottom surface of the heat sink opposite the power door.

18. The luminaire of claim 17, wherein the heat sink is configured to optionally couple to an American National Standards Institute (ANSI) standard dusk to dawn reflector/refractor assembly via a bail latch.

19. The luminaire of claim 17, wherein the at least one light source and heat sink configuration provides full cutoff lighting.