LED replacement light assembly with improved cooling features

摘要

Embodiments of the invention provide an LED replacement light assembly for retrofitting an incandescent light fixture that has a housing with a base. The LED replacement light assembly can include a shaft with a top portion and a lower threaded portion. The lower threaded portion can be screwed into the base. The LED replacement light assembly can also include an LED adapter, and a circuit board including a plurality of LEDs. One embodiment can include a thermally conductive disc that can engage the circuit board and the housing to conduct heat from the circuit board to the housing. A thermal interface can be positioned between the thermally conductive disc and the housing to provide enhanced conduction.

主权项

1. An LED light assembly for retrofitting an incandescent light fixture for use under water, the incandescent light fixture having a housing with a base, the LED light assembly comprising;
a shaft including a top threaded portion and a lower threaded portion, the lower threaded portion configured to screw into the base to provide electrical power to the LED light assembly; an LED adapter including circuitry for a plurality of LEDs, the LED adapter in electrical communication with the lower threaded portion of the shaft; a circuit board including the phurality of LEDs, the plurality of LEDs in electrical communication with the LED adapter; a thermally conductive disc including a thermally conductive path for conducting heat from the circuit board to the housing, the thermally conductive path including at least a top surface of the thermally conductive disc engaging the circuit board and an outer surface of the thermally conductive disc configured to engage the housing, wherein the top threaded portion of the shaft extends through the thermally conductive disc; and a nut in threaded engagement with the top threaded portion of the shaft, wherein tightening the nut forces the thermally conductive disc toward the base and forces the outer surface of the thermally conductive disc into tighter engagement with the housing.