LED lamp with LED assembly on a heat sink tower

摘要

A lamp has an optically transmissive enclosure and a base defining a longitudinal axis of the lamp extending from the base to the free end of the enclosure. A heat sink is at least partially located in the enclosure and includes a tower that extends along the longitudinal axis of the lamp. An LED assembly is positioned in the optically transmissive enclosure. The LED assembly comprises a lead frame circuit or a flex circuit where LEDs are attached to the circuits. The lead frame and flex circuit are formed into a three-dimensional shape and are thermally coupled to the tower.

主权项

1. A lamp comprising:
an optically transmissive enclosure and a base defining a longitudinal axis of the lamp extending from the base to the free end of the enclosure; a heat sink comprising a tower that is at least partially located in the enclosure, the tower extending along the longitudinal axis and comprising an outer periphery and a first end that extends to a center of the enclosure; an LED assembly in the optically transmissive enclosure, the LED assembly comprising a lead frame circuit and a plurality of LEDs attached to the lead frame circuit at solder joints such that the solder joints mechanically hold the lead frame circuit together as well as provide the electrical connections to anode and cathode sides of the lead frame, the lead frame being thermally coupled to the tower and formed into a three-dimensional shape where the lead frame wraps around the outer periphery of the tower such that the plurality of LEDs are disposed between the base and the first end of the tower.