Thermal solution for LED candelabra lamps

摘要

A lighting device that uses one or more LEDs, an optical element (e.g., diffuser), and a heat sink to provide thermal management is provided. The overall shape of the lighting device, particularly the heat sink, can be configured to imitate the appearance of a traditional incandescent candelabra lamp. One or more features are also provided to assist with the conduction of heat away from the LED(s) and to the heat sink. The lighting device can provide improved lumen output and light distribution.

主权项

1. A lighting device defining a longitudinal direction, the lighting device comprising:
a base for connecting the lighting device to a power source; a heat sink comprising
an annulus; anda plurality of fins extending along the longitudinal direction from the annulus, wherein said heat sink includes a distal portion located along the longitudinal direction and away from said base, and wherein said plurality of fins converge toward said distal portion; at least one LED located within the annulus of said heat sink; and an optical element positioned to receive light from said at least one LED and positioned with the plurality of fins around the optical element.