The working principle of the self-igniting lamp is: converting electric energy into heat energy, and then radiating light energy by thermal energy. Its working process is to heat the temperature of the filament to more than 2000% by current, just like the red iron can emit light. Light comes. In this process, a large amount of electrical energy is converted into heat and wasted, and only about 10% of the electrical energy can be converted into useful light energy.
The working principle of the ink fluorescent lamp is: in a closed gas discharge tube containing argon (argon or helium) gas and mercury, the temperature of the filament is heated to about 1000~C by electric current, and the filament coated with the electronic powder starts to emit electrons. Colliding with argon atoms and obtaining energy, the argon atoms collide with the mercury atoms to cause ionization, and the ultraviolet ray excites the phosphor coated on the wall of the gas discharge tube to emit white light. The electro-optical conversion efficiency of the fluorescent lamp is about 25%, which is about the same power tungsten wire. Double the electric light.
LED illumination, ie LED illumination, is a semiconductor device that can directly convert electrical energy into light energy. After power-on, it converts 90% of the electrical energy into light energy. The remaining part of the electrical energy generates a small amount of thermal energy when the semiconductor device is working, and the electro-optical conversion efficiency Up to 90%. In short, the LED does not need filament heating, it is a cold light source, which distinguishes the working principle that the other lamps are inevitably heated, and the process of converting electric energy into thermal energy and then converting it into light energy is abandoned, and the electric energy is directly converted into light energy, and the same brightness is generated. The least energy is consumed. Therefore, LED energy-saving lamps are more energy efficient than other lamps.
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