Heat dissipating device for LED source and LED source

Abstract

The invention belongs to the radiation device technology field, relates to a heat dissipation apparatus for LED light source with small size and high power (such as a high power MR16 spotlight) and a LED light source having the heat dissipation apparatus. The LED light source heat dissipation apparatus comprises a cup body with a luminescent LED disposed inside; the inner wall of the cup body is used for reflection and the outer wall of the cup body is used for heat dissipation. The apparatus is characterized in that: it also comprises a cover body disposed outside the cup body; a cavity used for ventilation is disposed between cover body and the outer wall of the cup body; vents in communication with the cavity are formed on the upper and lower portion of the cup body. The heat dissipation apparatus also comprises a turbine fan driven by motor; the fan is supported on the vent by a fan bearing holder for accelerating the airflow. The heat dissipation apparatus of the invention completely solves the problem of heat dissipation of the LED light source with small size and high power; and achieves the advantages of good heat dissipation effect, long service life, energy conservation and environmental protection.

Description

【Technical field】 [0001] The invention belongs to the technical field of heat dissipation devices, and relates to a heat dissipation device of a small-sized high-power LED light source (such as a high-power MR16 LED spotlight) and an LED light source with the heat dissipation device. 【Background technique】 [0002] Although the LED light source is a cold light source, it will generate a certain amount of heat when it is powered on, and when the heat cannot be dissipated in time, the temperature of the LED light source will gradually increase, and the stable operation of the LED (light-emitting diode) The temperature range is -40°C to 80°C. If the heat cannot be dissipated effectively, it will greatly affect the product performance and service life of the LED light source. [0003] MR16 LED spotlight is a small-sized light source with a multi-faceted reflector. The low-power MR16LED spotlight generates less heat, so there is no need to consider the heat dissipation of the LED...

AI Technical Summary

Problems solved by technology

[0006] In the above patents, fins are used to achieve the purpose of heat dissipation. The only difference is the size and number of fins. When the power of the LED spotlight increases to more than 6W, the diameter of the MR16 LED spotlight is already limited. In some cases, only by increasing the heat dissipation area of ​​the fins can no longer meet the needs of heat dissipation.

This is because fins dissipate heat into the air through radiation. When the air around the fins is heated by conduction, the efficiency of fin heat dissipation will be greatly reduced, which is not conducive to heat dissipation.

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