Light fixtures and lighting devices

Patent metadata

Field	Value
Publication number	US-9310035-B2
Application number	US-11634108-A
Country	US
Kind code	B2
Filing date	May 7, 2008
Priority date	May 7, 2007
Publication date	Apr 12, 2016
Grant date	Apr 12, 2016

Abstract

There is provided a light fixture comprising a baffle system and a side reflector, the baffle system comprising at least an outer baffle structure and an inner baffle structure. Also, there is provided a light fixture which comprises at least two recessed concentric square elements, triangular connecting elements and lenses which are recessed from the faces of each of the square elements. In some embodiments, the lighting device comprises at least one solid state light emitter. In some embodiments, the light fixture further comprises at least one lens positioned between at least two respective baffle elements.

First claim

The invention claimed is:

1. A light fixture comprising a baffle system and a side reflector,
said baffle system comprising at least an outer baffle structure and an inner baffle structure,
said side reflector comprising a first end portion and a second end portion, said second end portion spaced from said first end portion relative to an axis of said outer baffle structure,
an extremity of said outer baffle structure in a first plane,
an extremity of said inner baffle structure in a second plane, said second plane substantially parallel to said first plane, said second plane spaced from said first plane in a first direction along said axis of said outer baffle structure,
said first end portion of said side reflector abutting at least one outer surface of said outer baffle structure, said at least one outer surface of said outer baffle structure facing outward from said light fixture in a direction substantially perpendicular to said axis of said outer baffle structure, said side reflector extending through said first plane and through said second plane to said second end portion of said side reflector,
at least a portion of said second end portion below said first end portion if said light fixture is oriented so that said first direction is vertically downward,
said first end portion entirely within a space defined by lines that (1) extend through said second end portion and (2) are parallel to said axis of said outer baffle structure,
said inner baffle structure entirely within planes which extend through an outer periphery of said outer baffle structure perpendicular to said first plane.

2. A light fixture as recited in claim 1 , wherein:
said light fixture further comprises at least one lighting device,
said first plane is at a location where, if said lighting device is illuminated, light travels through said first plane, and
said second plane is at a location where, if said lighting device is illuminated, light travels through said second plane.

3. A light fixture as recited in claim 2 , wherein said lighting device comprises at least one solid state light emitter, each of said at least one solid state light emitter entirely within a region defined by planes which extend through said extremity of said inner baffle structure perpendicular to said first plane.

4. A light fixture as recited in claim 3 , wherein if said lighting device is illuminated, light passes through said first plane before passing through said second plane.

5. A light fixture as recited in claim 2 , wherein:
if said lighting device is illuminated, light passes through a third plane before passing through said first plane, said third plane parallel to said first plane,
said extremity of said outer baffle structure is a first series of points extending around a periphery of said outer baffle structure, wherein each of said first series of points is, for each radial position around said periphery of said outer baffle structure, a maximum distance from said third plane, and
said extremity of said inner baffle structure is a second series of points extending around a periphery of said inner baffle structure, wherein each of said second series of points is, for each radial position around said periphery of said inner baffle structure, a maximum distance from said third plane.

6. A light fixture as recited in claim 5 , wherein said first series of points defines a first substantially square shape, and said second series of points defines a second substantially square shape.

7. A light fixture as recited in claim 1 , wherein said baffle system comprises a plurality of baffle elements and said light fixture further comprises at least a first lens, said first lens between a first surface of one baffle element and a second surface of another baffle element, said first surface substantially perpendicular to said first plane and said second plane, said second surface substantially perpendicular to said first plane and said second plane.

8. A light fixture as recited in claim 7 , wherein
said light fixture comprises at least a first lens abutting said outer baffle structure, said first lens spaced from said first plane, said first lens on a side of said first plane which is opposite from said second plane, and
said light fixture comprises at least a second lens abutting said inner baffle structure, said second lens on a side of said second plane which is the same as said first plane.

9. A light fixture as recited in claim 1 , wherein said side reflector is slanted at an angle of from about 20 degrees to about 40 degrees relative to said first plane.

10. A light fixture as recited in claim 1 , wherein:
said outer baffle structure comprises a plurality of outer baffle elements, each of said outer baffle elements having an outer baffle element first side and an outer baffle element second side which are substantially perpendicular to said first plane, and
said inner baffle structure comprises a plurality of inner baffle elements, each of said inner baffle elements having an inner baffle element first side and an inner baffle element second side which are substantially perpendicular to said second plane.

11. A light fixture as recited in claim 1 , wherein at least a portion of said side reflector is in a third plane, and said second plane is between said first plane and said third plane.

12. A light fixture as recited in claim 1 , wherein:
said light fixture further comprises at least a first lighting device;
said first plane is defined by a series of points extending around a periphery of said outer baffle structure;
said second plane is defined by a series of points extending around a periphery of said inner baffle structure;
if said first lighting device is illuminated, light emitted from said first lighting device passes through a fourth plane before passing through said first plane or said second plane, said fourth plane parallel to said first plane and said second plane;
said series of points extending around a periphery of said outer baffle structure is, for each radial position around said periphery of said outer baffle structure, a maximum distance on said outer baffle structure from said fourth plane; and
said series of points extending around a periphery of said inner baffle structure is, for each radial position around said periphery of said inner baffle structure, a maximum distance on said inner baffle structure from said fourth plane.

13. A light fixture as recited in claim 12 , wherein if said first lighting device is illuminated, light emitted from said first lighting device passes through said first plane before it passes through said second plane.

14. A light fixture as recited in claim 12 , wherein if said first lighting device is illuminated, light emitted from said first lighting device passes through said second plane before it passes through said first plane.

15. A light fixture as recited in claim 1 , wherein:
said light fixture further comprises at least one lighting device,
said extremity of said outer baffle structure in said first plane is an extremity with respect to said lighting device,
at least a portion of said side reflector is in a third plane, said third plane farther from said lighting device than said first plane, and
if said lighting device is illuminated, light passes through said first plane before passing through said second plane, and through said second plane before passing through said third plane.

16. A light fixture as recited in claim 1 , wherein said outer baffle structure and said inner baffle structure are configured to baffle light emitting from said light

Assignees

• Trott Gary David
• Pickard Paul Kenneth
• Cree Inc

Inventors

• Trott Gary David
• Pickard Paul Kenneth

Classifications

• F21V29/763 Primary

  the planes containing the fins or blades having the direction of the light emitting axis · CPC title

• F21V29/70

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

• F21V11/02

  using parallel laminae or strips, e.g. of Venetian-blind type (F21V11/06 takes precedence) · CPC title

• F21V1/02 Primary

  Frames · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title