The heat dissipation of the street light directly affec […]
The heat dissipation of the street light directly affects the service life of the lamp, the lighting effect, and the service life of the lamp. What method is usually used for the heat dissipation of the led solar street lamp?
Generally, the heat conduction plate is used. The heat conduction plate is actually a 5mm thick copper plate, which is actually a temperature equalizing plate, whose function is to evenly heat the heat source; it will also dissipate heat by installing a heat sink, but the heat sink is installed. The disadvantage is that it is too heavy. The weight is very important in the street lamp head system. Generally, the height of the street lamp head equipment is more than six meters, and the risk will increase as the weight increases. Especially in the event of earthquakes and hurricanes, accidents may occur, so this method is rarely used in the market.
The current common radiators are as follows:
Pure aluminum radiator was the most common radiator in the early days, and its manufacturing process was simple and low in cost. So far, pure aluminum radiators still occupy a considerable part of the market. In order to increase the heat dissipation area of its fins, the most commonly used processing method for pure aluminum radiators is aluminum extrusion technology.
Pure copper radiator, the thermal conductivity of copper is 1.69 times that of aluminum, so under the same other conditions, the pure copper radiator can take heat away from the heat source faster. However, the texture of copper is a problem. Many advertised "pure copper radiators" are not actually 100% copper.
Copper-aluminum combined radiator, after considering the respective shortcomings of copper and aluminum, some high-end radiators in the current market often use a copper-aluminum combined manufacturing process. These radiators usually use copper metal bases, while heat sink fins are used. Use aluminum alloy. Of course, in addition to the copper bottom, there are also methods such as using copper pillars for the heat sink, which are also the same principle.
Recently, many peers have begun to adopt the world's pioneering pin-shaped heat dissipation technology. The heat dissipation power of pin-shaped radiators is much better than that of traditional fin-shaped radiators. It can make the junction temperature more than 15°C lower than that of ordinary radiators, and Waterproof performance is better than general aluminum radiator, even volume and weight.