What are the characteristics of LED light sources?

As a new generation of light sources, LED light sources are quite different from traditional heat radiation and gas discharge light sources such as incandescent lamps and high-pressure sodium lamps. The current LED light sources have the following advantages in lighting:

(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 design of various lamps and equipment, with strong adaptability and applicable scope.

(2) Good environmental protection performance: As the LED light source does not need to be added with metal mercury in the production process, the waste LED will not cause mercury pollution, and almost all of its wastes can be recycled, which not only saves resources, but also protects the environment.

(3) safety and stability: the LED light source can be driven by low-voltage direct current, and the general power supply voltage is between 6 and 6~24V, so the safety performance is better, especially suitable for public places. In addition, under better external environment, LED light source has smaller light attenuation and longer service life than traditional light source, even if it is frequently switched on and off, it will not affect its service life.

(4) Good shock resistance and impact resistance: The basic structure of 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, and there is no need to vacuum or inject specific gas into the lamp tube like incandescent lamps or fluorescent lamps. Therefore, the LED light source has good seismic and impact resistance, which brings convenience to its production, transportation and use.

(5) Strong directivity: Compared with the traditional light source, the light emitted by the LED light source is directional, and most of the light emitted from the LED can be directly directed to the illuminated surface, so the utilization rate is much higher than that of the traditional light source.

(6) Fast response time: the response time of incandescent lamp is millisecond, while that of LED light source is nanosecond. Therefore, it is widely used in the field of traffic signals and car signal lights.