Are all LED lights cold light sources?

LED lamps are cold light sources, which are excited by chemical energy, electric energy and biological energy, such as fireflies and neon lights. It has excellent light source, scintillation characteristics and almost no infrared spectrum. When an object emits light, its temperature will not be higher than the ambient temperature. This kind of luminescence is called cold light, so it is called cold light source.

LED has the disadvantages of solid-state cold light source, epoxy resin encapsulation, anti-vibration, no loose parts in the lamp body, no filament easy to burn, thermal deposition, light decay and so on, and its service life can reach 60,000 ~ 65,438+10,000 hours, which is more than 10 times that of traditional light sources.

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LED lamps have the characteristics of high efficiency, environmental protection and long service life. However, people who often use LED lamps will find that LED lamps can easily convert light energy into heat energy because of their extremely high brightness, which makes LED lamps very hot. At this time, if the LED cannot dissipate heat as soon as possible, its life will be greatly reduced.

Many LED manufacturers use aluminum shells for their LED lamps. The aluminum shell is easy to dissipate heat, beautiful in appearance and light in weight. Many high-end electronic products use aluminum casings.

The aluminum shell of LED can prolong the life of wick and make LED lamp look beautiful. However, aluminum lamp cups are expensive and the production cost is very high. The lamp cup needs to be machined by lathe. Therefore, some high-quality and medium-quality LED lamps will use aluminum lamp shells.

Another common LED lamp housing is a plastic housing. Due to the low cost of plastic case, some low-end LED lamps will use plastic case. However, the plastic shell is not easy to dissipate heat, and the plastic is easy to melt and sublimate when heated to produce harmful gases. So Europe, North America and Japan don't use plastic shells. Due to the large-scale demand for cheap LED lamps in some parts of China, the sales of plastic casings in China are very large.

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