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US 10,816,148 B2Granted
Recessed lighting systems
AssigneeDMF, Inc.
InventorMichael D. Danesh
Life of this patent
Estimating the term…
Abstract
A recessed lighting system includes a casting, a light source module and one or more optic elements disposed in the casting, and a driver to power the light source module. In one example, the system also includes a junction box or a 4-10 inch recessed lighting fixture enclosure in which the casting is disposed. The system may also include a trim to cover an exposed edge of a hole in a ceiling or a wall into which the recessed lighting system is installed. The system also may include one or more connecting mechanisms to couple the trim to one or both of the junction box/enclosure and the casting. In one example, the casting includes a front end face and the one or more connecting mechanisms couple the trim to the front end face of the casting. The connecting mechanism(s) may include a twist-and-lock friction connection.
Claims35
A recessed lighting system, comprising:
- a lighting assembly, comprising:
- a light source module including at least one LED;
- an AC to DC converter to receive an AC voltage and supply regulated electrical energy to power the light source module;
- a lens;
- a reflector;
- and
- a heat-sinking unified casting having a closed rear face and a sidewall wherein:
- the sidewall is joined to the closed rear face at one end and joined to a front end face of the heat-sinking unified casting at another end of the heat-sinking unified casting;
- the sidewall extends 360 degrees around the central axis of the heat-sinking unified casting and defines a casting cavity that extends forward from the closed rear face to the front end face of the heat-sinking unified casting and outward to the sidewall;
- the sidewall has beat sink fins formed on its outside surface;
- the closed rear face and the sidewall are formed of a heat conductive material to dissipate beat generated by the light source module;
- the heat-sinking unified casting further comprises a twist-and-lock mechanism comprising multiple flanges that extend radially outward from a perimeter of the front end face of the heat-sinking unified casting;
- the height of the sidewall, between the flanges and an outside surface of the closed rear face, is less than 1½ inches;
- an outside width of the sidewall, between the flanges and the closed rear face, is less than 3½ inches and can fit between multiple tabs of a standard junction box;
- and
- the light source module is positioned inside the casting cavity closer to the closed rear face than to a surface of the front end face of the heat-sinking unified casting;
- wherein:
- at least a portion of a front surface of the lens is coplanar with the front end face of the heat-sinking unified casting to direct light produced by the light source module out into an area surrounding the recessed lighting system;
- the reflector is positioned inside the heat-sinking unified casting to direct light emitted from the light source module through the lens;
- a plurality of electrical wires coupled to the AC to DC converter pass through the closed rear face of the heat-sinking casting;
- and
- the AC to DC converter is positioned proximate to the closed rear face of the heat-sinking unified casting, and is coupled to the heat-sinking unified casting using a connecting mechanism, and is insulated from the heat-sinking unified casting.
19 more elements
A lighting assembly, comprising:
- a light source module including at least one LED;
- an AC to DC converter to receive an AC voltage and supply regulated electrical energy to power the light source module;
- a lens;
- and
- a heat-sinking unified casting, comprising:
- a closed rear face and a sidewall that defines a casting cavity containing the at least one LED, wherein:
- the sidewall includes a plurality of heat sink fins formed on an outside surface of the sidewall;
- and
- the closed rear face and the sidewall are formed of a heat conductive material to dissipate heat generated by the light source module;
- a front end face coupled to the sidewall;
- and
- a twist-and-lock mechanism, comprising:
- multiple flanges that extend radially outward from a perimeter of, and that are flush with, the front end face;
- and
- at least one groove and/or at least one slot to form a twist-and-lock friction connection with a trim,
- wherein:
- the sidewall has at least one exterior width dimension of less than 3½ inches such that at least a portion of the heat-sinking unified casting proximate to the closed rear face can fit between multiple tabs of a standard junction box;
- at least a portion of a front surface of the lens is coplanar with the front end face of the heat-sinking unified casting;
- and
- the AC to DC converter is positioned proximate to the closed rear face of the heat-sinking unified casting, and is coupled to the heat-sinking unified casting using a connecting mechanism, and is insulated from the heat-sinking unified casting.
17 more elements
A lighting assembly, comprising:
- a light source module including at least one LED;
- an AC to DC converter to receive an AC voltage and supply regulated electrical energy to power the light source module;
- a lens;
- and
- a heat-sinking unified casting, comprising:
- a closed rear face and a sidewall that defines a casting cavity containing the at least one LED, wherein the closed rear face and the sidewall are formed of a heat conductive material to dissipate heat generated by the light source module;
- a front end face coupled to the sidewall;
- a twist-and-lock mechanism, comprising:
- multiple flanges that extend radially outward from a perimeter of the front end face;
- and/or
- at least one groove and/or at least one slot to form a twist-and-lock friction connection with a trim,
- wherein:
- the sidewall has at least one exterior width dimension of less than 3½ inches such that at least a portion of the heat-sinking unified casting proximate to the closed rear face can fit between multiple tabs of a standard junction box;
- and
- at least a portion of a front surface of the lens is coplanar with the front end face of the heat-sinking unified casting.
12 more elements
Dependencies are inferred from the claim text.