The heat dissipation of the LED lamp housing will have different considerations depending on the power size and the place of use.

1. Aluminum heat dissipation fins This is the most common heat dissipation method, using aluminum heat dissipation fins as part of the housing to increase the heat dissipation area.

2. Thermally conductive plastic shell Fill the thermal conductive material during injection molding of the plastic shell to increase the thermal conductivity and heat dissipation capacity of the plastic shell.

3. Surface radiation heat dissipation treatment The surface of the lamp housing is treated with radiation heat dissipation. The simple thing is to apply radiation heat dissipation paint, which can take the heat away from the surface of the lamp housing by radiation.

4. Air fluid mechanics Using the shape of the lamp housing to create convection air, which is the lowest cost way to enhance heat dissipation.

5. Fan The long-life and high-efficiency fan is used inside the lamp housing to enhance heat dissipation, with low cost and good effect. However, it is more troublesome to replace the fan, and it is not suitable for outdoor use. This design is relatively rare.

6. Heat pipe Using heat pipe technology, the heat is conducted from the LED chip to the heat dissipation fins of the shell. It is a common design in large lamps, such as street lamps.

7. Liquid bulb Using the liquid bulb packaging technology, the transparent liquid with high thermal conductivity is filled into the bulb of the lamp body. This is the only technology that utilizes the heat conduction and heat dissipation of the light-emitting surface of the LED chip except for the principle of reflection.

8. Utilization of lamp caps In household-type LED lamps with lower power, the inner space of the lamp cap is often used to partially or completely insert the heating drive circuit. In this way, the lamp cap with a larger metal surface, such as a screw cap, can be used to dissipate heat, because the lamp cap is closely connected with the metal electrode of the lamp holder and the power cord. So part of the heat can be dissipated from this.

9. Integration of thermal conductivity and heat dissipation - the purpose of using high thermal conductivity ceramics to dissipate heat from the lamp housing is to reduce the operating temperature of the LED chip. Due to the large gap between the expansion coefficient of the LED chip and the expansion coefficient of our commonly used metal thermal conductivity and heat dissipation materials, the LED chip cannot be used for heat dissipation. Direct welding to avoid high and low temperature thermal stress damage to the LED chip. The latest high thermal conductivity ceramic material, the thermal conductivity is close to that of aluminum, and the expansion system can be adjusted to be synchronized with the LED chip. In this way, heat conduction and heat dissipation can be integrated, and the intermediate links of heat conduction can be reduced. There are also many thermal conduction designs inside the LED to export the heat generated by the chip to the terminal heat dissipation system, which is another way of knowledge.

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