Patent ID: 8362677
Filing Date: 2013-01-29
Classification: F21V,F21Y

Abstract:
1. A solid state lighting device, comprising: a driver housing adapted for electrical communication with a voltage source; a heat sink having a frusto-conical shape defined by a flat, disc-shaped bottom wall having a circular perimeter and an annular sidewall mounted about the circular perimeter of said flat, disc-shaped bottom wall and projecting upwardly and radially outwardly therefrom; a plurality of individual heat-radiating fins of differing lengths formed integrally with and depending from said disc-shaped bottom wall of said heat sink; each fin of said plurality of individual heat-radiating fins having a straight configuration in the form of a pin so that ambient air surrounds each pin and is free to flow between contiguous pins; said heat sink mounted in surmounting relation to said driver housing; a diffusion dome mounted in surmounting relation to said heat sink; said heat sink including said plurality of individual heat-radiating fins, and said driver housing collectively having a size and shape substantially equal to a size and shape of a conventional class “A” type of light bulb; said class “A” type of light bulb having a longitudinal axis of symmetry; said disc-shaped bottom wall of said heat sink being disposed normal to said longitudinal axis of symmetry; each fin of said plurality of heat-radiating fins having a longitudinal axis of symmetry parallel to said longitudinal axis of symmetry of said class “A” type of light bulb; each fin of said plurality of individual heat-radiating fins being uncovered and surrounded by ambient air; said plurality of individual heat-radiating fins arranged in rows and columns and being parallel to one another and being equidistantly spaced apart from one another so that air may flow in multiple directions between said heat-radiating fins, thereby transferring heat away from said heat sink, said multiple directions including air flow about a three hundred sixty degree (360°) circumference of said flat, disc-shaped bottom wall of said heat sink, thereby transferring heat away from said heat sink at any rotational orientation of said heat sink; said air flow being generally normal to the longitudinal axis of symmetry of each fin of said plurality of heat-radiating fins; and said arrangement of heat-radiating fins including a straight alignment of fins every sixty degrees about the circular perimeter of said heat sink.