Lighting fixture with recessed baffle trim unit
AssigneeCordelia Lighting, Inc.
InventorsKanghong Zhang, Daniel Dix
Life of this patent
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Abstract
A recessed lighting fixture providing illumination from a light source comprising a plurality of light emitting diodes (LEDs) placed within a cavity of a planar surface, such as a ceiling, wall, or shower. The fixture comprises a baffle integrated with a low profile heat sink that is used to draw heat out of the fixture and communicate that heat to a trim ring of the fixture for dissipation of the heat in the room so that higher intensity light sources can be used. Improved grounding of the recessed trim unit to the recessed housing is provided with combination support and grounding springs. One embodiment of the light source is fixed in position while a second embodiment is gimbal mounted for aiming the light produced by the fixture.
Claims26
A recessed lighting fixture located in an opening of a surface, the surface having an outer side and an inner side, the lighting fixture comprising:
- a recessed housing located in a recessed configuration in the opening of the surface adjacent the inner side;
- a lighting trim unit comprising:
- a trim ring configured to be disposed at the opening on the outer side of the surface;
- a light source that emits light, the light source located within the recessed housing and disposed so as to emit light at the opening;
- a baffle surrounding the light source and in contact with the trim ring to direct light from the light source at the opening, the baffle having a first end located adjacent the opening in the surface and a second end located within the recessed housing opposite the first end;
- and
- a low profile heat sink integrated with the baffle, wherein the integrated baffle heat sink draws heat out of the recessed housing and conducts it to the trim ring;
- whereby heat communicated to the trim ring may be dissipated at the outer side of the surface.
A recessed lighting fixture located in an opening of a surface, the surface having an outer side and an inner side, the lighting fixture comprising:
- a recessed housing located in a recessed configuration in the opening of the surface adjacent the inner side;
- a lighting trim unit comprising:
- a trim ring having a first portion located on the outer side of the opening and a second portion of the trim ring extending into the opening, the trim ring formed of an electrically and thermally conductive material;
- a light source that emits light, the light source located within the recessed housing and disposed so as to emit light at the opening;
- a baffle having an integrated low profile heat sink formed as a single piece disposed about the light source and connected with the trim ring, the baffle located within the recessed housing, wherein the integrated heat sink comprises a plurality of heat sink elements protruding outwardly, the baffle formed of an electrically and thermally conductive material;
- and
- a metallic spring in electrical contact with the baffle, the spring configured to engage the recessed housing to thereby establish an electrical pathway between the baffle and the housing and to hold the trim unit in place in relation to the recessed housing.
A recessed lighting fixture located in an opening of a surface, the surface having an outer side and an inner side, the lighting fixture comprising:
- a recessed housing located in a recessed configuration in the opening of the surface adjacent the inner side;
- a lighting trim unit comprising:
- a trim ring having a first portion located on the outer side of the opening and a second portion of the trim ring extending into the opening, the trim ring formed of an electrically and thermally conductive material;
- a light source comprising a plurality of light emitting diodes, the light source located within the recessed housing and disposed so as to emit light at the opening;
- an electrically and thermally conductive low profile baffle having an integrated low profile heat sink formed as a single piece disposed about the light source and connected with the trim ring, the baffle located within the recessed housing, wherein the baffle comprises a plurality of heat sink elements protruding radially outwardly and aligned in parallel with a longitudinal axis of the baffle;
- a second heat sink located in contact with the light source and mounted to the baffle, the second heat sink configured to draw from the light source and conduct that heat to the baffle;
- and
- a metallic spring in electrical contact with the baffle, the spring configured to engage the recessed housing to thereby establish an electrical pathway between the baffle and the housing and to hold the trim unit in place in relation to the recessed housing.
Dependencies are inferred from the claim text.