LED heat dissipation technology
LED aluminum heat sink fins
This is the most common way to dissipate heat. Aluminum fins are used as part of the LED lamp housing to increase the heat dissipation area.
Thermal conductive plastic shell
The use of LED insulating and heat-dissipating plastic instead of aluminum alloy to make the heat sink can greatly improve the heat radiation capacity.
Radiation treatment of lamp shell surface
The surface of the lamp housing is treated with radiation heat. The simple thing is to apply radiant heat-dissipating paint, which can radiate the heat away from the surface of the lamp housing.
Using the shape of the lamp housing to create convective air, this is the lowest cost way to enhance heat dissipation.
Long-life and high-efficiency fans are used inside the lamp housing to enhance heat dissipation, with low cost and good effect. However, it is more troublesome to change the fan, and it is not suitable for outdoor use. This kind of design is relatively rare.
Using heat pipe technology, heat is conducted from the LED chip to the heat dissipation fins of the housing. In large lamps, such as street lamps, etc. are common designs.
Using liquid bulb packaging technology, a transparent liquid with high thermal conductivity is filled into the bulb of the lamp body. This is the only technology that uses the light-emitting surface of the LED chip to conduct heat and dissipate heat in addition to the principle of light reflection.
The use of lamp holder
In household-type low-power LED lamps, the internal space of the lamp holder is often used to partially or completely insert the heating drive circuit. In this way, a lamp cap with a larger metal surface like a screw cap can be used to dissipate heat, because the lamp cap is closely connected to the metal electrode of the lamp holder and the power cord. Therefore, part of the heat can be taken out and dissipated.
LED light heat dissipation application
The purpose of the lamp housing is to reduce the operating temperature of the LED chip. Since the expansion coefficient of the LED chip is very different from the expansion coefficient of our commonly used metal thermal and heat dissipation materials, the LED chip cannot be directly welded to avoid high and low temperature thermal stress from destroying the LED chip. The latest high thermal conductivity ceramic material, the thermal conductivity is close to aluminum, and the expansion system can be adjusted to synchronize with the LED chip. In this way, heat conduction and heat dissipation can be integrated, reducing the intermediate links of heat conduction.
10. PVC improved material
With heat conduction function, secondary packaging
Breakthrough in heat dissipation technology of LED lamps
1. Break through the problem of unsatisfactory heat dissipation of the existing finned aluminum radiator
Most of the existing ceiling lights use finned aluminum as the heat sink, and the heat dissipation effect of this type of heat sink is not ideal, and the heat sink usually reaches a higher temperature.