Light engine assemblies

Patent metadata

Field	Value
Publication number	US-9605828-B2
Application number	US-93905207-A
Country	US
Kind code	B2
Filing date	Nov 13, 2007
Priority date	Nov 14, 2006
Publication date	Mar 28, 2017
Grant date	Mar 28, 2017

Abstract

A light engine assembly, comprising at least one trim element, a light engine housing, and a light engine comprising at least one solid state light emitter. In some embodiments, an external surface of the light engine housing is in contact with an internal surface of the trim element. In some embodiments, the light engine assembly further comprises at least one thermal interface element positioned between and in contact with the light engine housing and the trim element. In some embodiments, the light engine assembly further comprises light engine housing fins which are in contact with the light engine housing and the trim element.

First claim

The invention claimed is:

1. A light engine assembly, comprising:
at least one exterior element;
at least one interior element;
at least first and second heat dissipation fins; and
a light engine,
the exterior element having at least an exterior element first surface and an exterior element second surface,
the interior element having at least an interior element first surface and an interior element second surface,
at least a first portion of the exterior element second surface spaced radially from at least a first portion of the interior element first surface,
the first heat dissipation fin in contact with the first portion of the exterior element second surface and with the first portion of the interior element first surface,
the second heat dissipation fin in contact with the first portion of the exterior element second surface and with the first portion of the interior element first surface,
at least a first portion of the exterior element first surface substantially frustoconical,
the light engine within a first space defined by the exterior element second surface,
the light engine comprising at least a first solid state light emitter,
a second space defined by the exterior element, the interior element, the first heat dissipation fin and the second heat dissipation fin,
air able to enter the second space through a first opening at a first end of the second space and exit the second space through a second opening at a second end of the second space.

2. A light engine assembly as recited in claim 1 , wherein:
the light engine assembly comprises a plurality of heat dissipation fins comprising at least the first and second heat dissipation fins, and
in a section along a first plane:
a cross-section of the exterior element is a first substantially circular shape,
a cross-section of the interior element is a second substantially circular shape,
a cross-section of each of the heat dissipation fins extends from the interior element to the exterior element,
the heat dissipation fins are spaced circumferentially relative to the first and second substantially circular shapes.

3. A light engine assembly as recited in claim 2 , wherein:
the light engine assembly comprises at least eight heat dissipation fins, and
each heat dissipation fin is spaced circumferentially from at least one other heat dissipation fin by not more than 45 degrees.

4. A light engine assembly as recited in claim 1 , wherein the light engine is within a third space defined by the interior element second surface.

Assignees

• Pickard Paul Kenneth
• Trott Gary David
• Cree Inc

Inventors

• Pickard Paul Kenneth
• Trott Gary David

Classifications

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21Y2105/10

  comprising a two-dimensional [2D] array of point-like light-generating elements · CPC title

• F21W2131/401

  for swimming pools · CPC title

• F21S45/47

  Passive cooling, e.g. using fins, thermal conductive elements or openings · CPC title

• F21S41/50 Primary

  characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers · CPC title