LED lighting system and high-power LED lamp

摘要

The present invention relates to a high-power LED lamp. The lamp includes an LED module, an inner heat sink disposing air passages along an axial direction thereof, a heat pipe assembly including multiple U-shaped heat pipes, and an outer heat sink. Middle sections of the heat pipes form a smooth surface on which the LED module is attached. Straight sections of the heat pipes are coiled around the inner heat sink. The smooth surface is located at an end of the inner heat sink not to block the air passages of the inner heat sink. An annular vapor chamber is packaged a grid-shaped configuration of the heat pipes and attached to each heat pipe. The invention achieves fast heat conduction and dissipates the heat via the inner and outer heat sinks.

主权项

1. An LED lighting system comprising:
a high-power LED lamp, the high-power LED lamp comprising: a control unit receiving a lighting instruction and outputting a control signal according the lighting instruction; an LED module comprising a base and a plurality of LED chips disposed on the base; a driving unit connected to the control unit and outputting a current with a corresponding intensity according to the control signal to drive the LED module; an inner heat sink comprising an inner cylinder and an outer cylinder coiling around the inner cylinder, the inner cylinder and the outer cylinder being concentric with each other, a plurality of fins being disposed between the inner cylinder and the outer cylinder, air passages being defined between adjacent the fins and generating a chimney effect due to heat absorbed by adjacent the fins; an outer heat sink having a hole defined therein and disposing a plurality of fins surrounding the hole and extending along an axial direction of the outer heat sink, air passages being defined between adjacent the fins and generating the chimney effect due to heat absorbed by adjacent the fins, the outer heat sink being coiled around the inner heat sink; a first heat pipe assembly including a plurality of U-shaped heat pipes, middle sections of the heat pipes being put together to cooperatively form a smooth surface for securing the LED module thereon, straight sections of the heat pipes being coiled around the inner heat sink and being attached to an outer surface of the outer cylinder of the inner heat sink and a circumferential surface corresponding to the hole of the outer heat sink; a second heat pipe assembly including a plurality of U-shaped heat pipes, middle sections of the second heat pipe assembly being located a rear side of the middle sections of the first heat pipe assembly, the middle sections of the second heat pipe assembly being substantially perpendicular to the middle sections of the first heat pipe assembly, straight sections of the second heat pipe assembly being coiled around the inner heat sink and being attached to the outer surface of the outer cylinder of the inner heat sink and the circumferential surface corresponding to the hole of the outer heat sink, and a supporting board being located between the middle sections of the first heat pipe assembly and the middle sections of the second heat pipe assembly, the supporting board having a first set of grooves defined in a first surface and a second set of grooves defined in a second surface, the first set of grooves receiving and locking the middle sections of the first heat pipe assembly therein; the second set of grooves receiving and locking the middle sections of the second heat pipe assembly therein, the supporting board defining a plurality of through holes so that the middle sections of the first and second heat pipe assembly contact with each other through the through holes, wherein a sum of a power of the first and second heat pipe assemblies is greater than or equal to a power of the LED module.