As a new generation of light sources, LED light sources have great advantages over traditional heat radiation and gas discharge light sources such as incandescent lamps and high-pressure sodium lamps:
(1) Small size: compared with traditional light sources, LED light sources are small in size and light in weight, and can be made into devices of various shapes, which is convenient for the layout and planning of various lamps and equipment, with strong adaptability and wide application range.
(2) Good environmental protection function
Because there is no need to add metal mercury in the production process of LED light sources, mercury pollution will not be caused after the LED is discarded, and its waste can be almost recycled, which not only saves resources but also protects the environment.
(3) Safe and stable
The LED light source can be driven by low-voltage DC power. Generally, the power supply voltage is between 6 and 24V, so the safety function is better, especially suitable for public places. In addition, under the condition of good external environment, LED light sources have smaller light attenuation and longer service life than traditional light sources. Even if they are frequently switched on and off, their service life will not be affected.
(4) Good seismic and impact resistance
The basic structure of the LED light source is a piece of electroluminescent semiconductor material, which is placed on a shelf with leads, and then sealed with epoxy resin. There is no glass shell in the structure, so it is not necessary to vacuum the lamp tube or rush into a specific gas like incandescent lamps or fluorescent lamps. Therefore, the anti-seismic and anti impact functions of LED light source are outstanding, which brings convenience to its production, transportation and application.
(5) Strong directivity
Compared with the traditional light source, the light announced by the LED light source is directional, and most of the light announced from the LED can directly impinge on the illuminated surface, with a utilization rate much higher than that of the traditional light source.
