LED lighting system and high-power LED lamp
AssigneeZhongshan Weiqiang Technology Co., Ltd.
InventorsKechin Lee, Hongchieh Chen
Life of this patent
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Abstract
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.
Claims14
An LED (light-emitting diode) 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 LEDs packaging on the base;
- a driving unit connected to the control unit and outputting 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 first fins being disposed between the inner cylinder and the outer cylinder, air passages being defined between adjacent first fins and generating the chimney effect due to the heat absorbed by the adjacent first fins;
- a heat pipe assembly comprising 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 cooperatively forming a grid-shaped configuration that is coiled around the inner heat sink and is attached to an outer surface of the inner heat sink, the smooth surface being located at an end of the inner heat sink not to block the air passages of the inner heat sink to the greatest extent;
- an annular vapor chamber enclosing the grid-shaped configuration of the heat pipes, the annular vapor chamber being attached to an outer side of each heat pipe, and
- an outer heat sink having a hole defined therein and disposing a plurality of second fins surrounding the hole and extending along an axial direction of the outer heat sink, air passages being defined between adjacent second fins and generating the chimney effect due to the heat absorbed by the adjacent second fins, the outer heat sink being coiled around the vapor chamber, wherein the sum of the power of the heat pipe assembly and the vapor chamber is greater than or equal to the power of the LED module.
Dependencies are inferred from the claim text.