Why are LED lamps larger than traditional lamps?
Mainly because of LED cooling technology. Heat dissipation is a major factor affecting the lighting intensity of LED lamps. The heat sink can solve the heat dissipation problem of low illumination LED lamps. A heat sink cannot solve the heat dissipation problem of 75W or 100W LED lamps. To achieve the desired lighting intensity, active cooling techniques must be used to account for the heat released by the LED luminaire components. Some active cooling solutions such as fans do not last as long as LED fixtures. In order to provide a practical active cooling solution for high-brightness LED luminaires, the cooling technology must be low energy consumption; suitable for small luminaires; and have a lifespan similar to or longer than the light source.
Generally speaking, radiators can be divided into active cooling and passive cooling according to the way of removing heat from the radiator.
Passive heat dissipation means that the heat of the heat source LED light source is naturally dissipated into the air through the heat sink. The heat dissipation effect is proportional to the size of the heat sink, but because it dissipates heat naturally, the effect is of course greatly reduced. It is often used in those who do not require space. For example, some popular motherboards also adopt passive cooling on the north bridge, and most of them adopt active cooling. Active cooling is forced by cooling devices such as fans. The heat emitted by the heat sink is taken away, which is characterized by high heat dissipation efficiency and small size of the device.
Active cooling can be divided into air cooling, liquid cooling, heat pipe cooling, semiconductor cooling, chemical cooling and so on. Air-cooled air-cooled heat dissipation is the most common heat dissipation method, and it is also a cheaper method in comparison. Air cooling is essentially the use of a fan to take away the heat absorbed by the radiator. It has the advantages of relatively low price and convenient installation. However, it is highly dependent on the environment. For example, when the temperature rises and overclocking, its cooling performance will be greatly affected.
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