Solid-state lighting fixtures

• US 7,922,354 B2
• Filed: 08/13/2008
• Issued: 04/12/2011
• Est. Priority Date: 08/13/2007
• Status: Active Grant

• Current Assignee: Robert L. Everhart
• Original Assignee: Robert L. Everhart
• Inventors: Everhart, Robert L.
• Primary Examiner(s): Husar; Stephen F
• Assistant Examiner(s): CRANSON JR, JAMES W
• Application Number:
  US12/191,111
• Publication Number:
  US 20090046457A1
• Time in Patent Office: 972 Days
• Field of Search: 362/235, 362/241, 362/294, 362/373, 362/276, 362/234
• US Class Current: 362/235
• CPC Class Codes: F21S 4/28 rigid, e.g. LED bars
• CPC Class Codes: F21V 23/009 the casing being inside the housing of the lighting device
• CPC Class Codes: F21V 23/026 Fastening of transformers or ballasts
• CPC Class Codes: F21V 23/0442 activated by means of a sensor, e.g. motion or photodetectors
• CPC Class Codes: F21V 29/763 the planes containing the fins or blades having the direction of the light emitting axis
• 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 2113/00 Combination of light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A high performance, high efficiency solid state electronic lighting device, having a sealed fixture body for use outdoors or in environments requiring IP rated sealed fixtures, uses light emitting diodes for producing light from AC current that operates on an as needed basis dependent upon occupancy, ambient light levels and facility load requirements. The high performance, high efficiency solid state electronic lighting device can also be used to replace the internal workings and reflective surfaces of a standard fluorescent fixture, a high-intensity-discharge (HID) lamp, or other arc-based lamps using light emitting diodes for producing light from AC current that operates on an as needed basis dependent upon occupancy, ambient light levels and facility load requirements.

Claims

1. A solid-state lighting fixture, comprising:

a housing having an inside surface and an outside surface;

a reflector assembly mounted in the housing, comprising;

at least one solid state lamp, each solid state lamp comprising;

a heat sink, and

a plurality of solid state light emitting elements associated with the heat sink, wherein the plurality of solid state light emitting elements are in a defined arrangement;

a reflector having at least one set of holes associated with each of the at least one solid state lamp, each set of holes comprising a plurality of holes arranged in the defined arrangement such that the plurality of solid state light emitting elements extend through the holes, wherein each at least one solid state lamp is positioned adjacent to a back surface of the reflector and the plurality of solid state elements extend from the back surface of the reflector to illuminate a front surface of the reflector;

a power supply usable to power the plurality of solid state light emitting elements, the power supply positioned between the back surface of the reflector and the inside surface of the housing;

at least one sensor package, each sensor package including at least one sensor usable to sense an ambient environmental condition in an area associated with the solid state lighting fixture; and

at least one load-shedding receiver mounted between the back surface of the reflector and the inside surface of the housing, each load-shedding receiver usable to reduce a supply current to at least one solid state lamp in response to a control signal.

2. The solid-state lighting fixture of claim 1, further comprising:

a gasket mounted to an open end of the inside surface of the housing; and

a cover that is securable to the housing and that engages the gasket such that, when the cover engages the gasket and is secured to the housing, the solid-state lighting fixture has an IP rating of at least 65.

3. The solid-state lighting fixture of claim 1, wherein, for at least some of the at least one solid state lamp, the plurality of solid state light emitting elements of each such solid state lamp are mounted to the heat sink in the defined arrangement.

4. The solid-state lighting fixture of claim 1, wherein:

for at least some of the at least one solid state lamp, each such solid state lamp further comprises a board;

the plurality of solid state light emitting elements of each such solid state lamp are mounted to the board in the defined arrangement; and

the board is thermally connected to the heat sink.

5. The solid-state lighting fixture of claim 4, wherein the board is a circuit board usable to electrically connect the plurality of solid state light emitting elements to the power supply.

6. The solid-state lighting fixture of claim 4, wherein the board is mechanically connected to the heat sink.

7. The solid-state lighting fixture of claim 1, wherein the at least one sensor usable to sense an ambient environmental condition in an area associated with the solid state lighting fixture comprises at least one of an occupancy sensor and an ambient light sensor.

8. The solid-state lighting fixture of claim 1, wherein at least one sensor of the sensor package is mounted to an outside surface of the housing.

9. The solid-state lighting fixture of claim 1, wherein at least one sensor of the sensor package is positioned inside the housing.

10. A solid-state conversion kit usable to convert a non-solid state lighting fixture to a solid state lighting fixture, the non-solid state lighting fixture having a housing having an inside surface and an outside surface, the solid-state conversion kit comprising:

a reflector assembly mountable in the housing, comprising;

at least one solid state lamp, each solid state lamp comprising;

a heat sink, and

a plurality of solid state light emitting elements associated with the heat sink, wherein the plurality of solid state light emitting elements are in a defined arrangement;

a reflector having at least one set of holes associated with each of the at least one solid state lamp, each set of holes comprising a plurality of holes arranged in the defined arrangement such that the plurality of solid state light emitting elements extend through the holes, wherein each at least one solid state lamp is positioned adjacent to a back surface of the reflector and the plurality of solid state elements extend from the back surface of the reflector to illuminate a front surface of the reflector;

a power supply usable to power the plurality of solids state light emitting elements, the power supply mountable between the back surface of the reflector and the inside surface of the housing;

at least one sensor package, each sensor package including at least one sensor usable to sense an ambient environmental condition in an area associated with the solid state lighting fixture; and

at least one load-shedding receiver mounted between the back surface of the reflector and the inside surface of the housing, each load-shedding receiver usable to reduce a supply current to at least one solid state lamp in response to a control signal.

11. The solid-state lighting fixture of claim 10, wherein, for at least some of the at least one solid state lamp, the plurality of solid state light emitting elements of each such solid state lamp are mounted to the heat sink in the defined arrangement.

12. The solid-state lighting fixture of claim 10, wherein:

for at least some of the at least one solid state lamp, each such solid state lamp further comprises a board;

the plurality of solid state light emitting elements of each such solid state lamp are mounted to the board in the defined arrangement; and

the board is thermally connected to the heat sink.

13. The solid-state lighting fixture of claim 12, wherein the board is a circuit board usable to electrically connect the plurality of solid state light emitting elements to the power supply.

14. The solid-state lighting fixture of claim 12, wherein the board is mechanically connected to the heat sink.

15. The solid-state lighting fixture of claim 10, wherein the at least one sensor usable to sense an ambient environmental condition in an area associated with the solid state lighting fixture comprises at least one of an occupancy sensor and an ambient light sensor.

16. The solid-state lighting fixture of claim 10, wherein at least one sensor of the sensor package is mounted to an outside surface of the housing.

17. The solid-state lighting fixture of claim 10, wherein at least one sensor of the sensor package is positioned inside the housing.

18. A solid-state lighting fixture, comprising:

a housing having an inside surface and an outside surface;

a reflector assembly mounted in the housing, comprising;

at least one solid state lamp, each solid state lamp comprising;

a heat sink, and

a plurality of solid state light emitting elements associated with the heat sink, wherein the plurality of solid state light emitting elements are in a defined arrangement;

a reflector having at least one set of holes associated with each of the at least one solid state lamp, each set of holes comprising a plurality of holes arranged in the defined arrangement such that the plurality of solid state light emitting elements extend through the holes, wherein each at least one solid state lamp is positioned adjacent to a back surface of the reflector and the plurality of solid state elements extend from the back surface of the reflector to illuminate a front surface of the reflector;

a power supply usable to power the plurality of solid state light emitting elements, the power supply positioned between the back surface of the reflector and the inside surface of the housing;

at least one sensor package, each sensor package including at least one sensor usable to sense an ambient environmental condition in an area associated with the solid state lighting fixture;

a gasket mounted to an open end of the inside surface of the housing; and

a cover that is securable to the housing and that engages the gasket such that, when the cover engages the gasket and is secured to the housing, the solid-state lighting fixture has a water resistant IP rating of at least 65.