Instruction

Incandescent filament electric heated to incandescence, with visible light from a thermal radiation of electric light source.Since 1879, the American inventor Thomas Alva Edison made carbon fiber (carbon) since the incandescent light bulb, by the people to the filament material, the structure of the filament, the continuous improvement of the gas filling, incandescent lamp luminous efficiency also increase accordingly.In 1959, the United States in the incandescent lamp developed on the basis of volume and failure tiny halogen tungsten lamp light.The development trend of incandescent lamp is mainly developed energy-saving light bulbs.Different purposes and requirements of incandescent lamp, its structure and the component is not the same.Incandescent light efficiency is low, but the light color and set the light performance is very good, is the most productive, the most widely used electric light source.