In order to provide a practical active cooling solution for high-brightness large-screen splicing fixtures, the cooling technology must be low-energy and can be used in small luminaires with a life similar to or higher than the source. Some active cooling solutions such as fans have a high life without large screen splicing fixtures.
The heat sink can solve the heat dissipation problem of low illumination large screen splicing lamps. The so-called passive heat dissipation refers to the heat from the large-screen splicing light source of the heat source to the air through the heat sink. The heat dissipation effect is proportional to the size of the heat sink, but the effect is greatly reduced due to the natural scalding volume. In equipment that does not require space, or for heat dissipation of components with low fever, such as the popular board of the department also adopts passive heat dissipation on the north bridge. Most of them adopt active heat dissipation, and active heat dissipation is through fans. The heat dissipating device forcibly removes the heat from the heat sink, which is characterized by high heat dissipation efficiency and small size of the device.
Heat dissipation is a major factor affecting the illumination intensity of large screen splicing fixtures. The 2007 US Energy Independence and Security Act requires the use of more efficient lighting fixtures starting in 2012. A heat sink can't solve the heat dissipation problem of 75W or 100W large screen splicing fixtures.
The demand for high-brightness bulbs is clear, with 75W and 100W bulbs occupying a large share of the lighting market. If these heats are not properly discharged, the luminosity and lifetime of large-screen splicing fixtures will drop dramatically.
Active heat dissipation, subdivided from the heat dissipation method, can be divided into air cooling, liquid cooling, heat pipe cooling, semiconductor refrigeration, chemical refrigeration and so on. In general, the heat sink can be divided into active heat sink and passive heat sink according to the way heat is removed from the heat sink. Large-screen splicing fixtures are 80% more energy efficient than conventional incandescent bulbs, but their large-screen splicing components and driver circuits dissipate a lot. These new requirements are driving consumers to look for existing incandescent lamps with good lighting quality, long life and high illumination. The market is eager to take advantage of the inherent energy savings and maintenance advantages of large screen splicing fixtures.
High-illumination large-screen splicing fixtures will encounter heat dissipation problems. In order to achieve the desired illumination intensity, active cooling technology must be used to solve the heat released by the large screen splicing luminaire assembly. Lamp manufacturers can produce 40W large screen splicing replacement lamps and 60W large screen splicing replacement lamps.
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