'New Favorite' LED lights promotion still needs a transition period

Not long ago at the Geneva motor show, the third-generation Audi TTCoupe introduced LED headlights to officially meet with the media. The exquisite LED headlights replaced the original xenon lamp assembly and became a highlight of the auto show. The flowers are similar year after year, and the cars are different year after year. The development of automobile industry technology is changing with each passing day, and new technologies continue to replace old technologies. The direction of the development of the automobile industry is also slowly moving towards intelligent and green environmental protection. The development of automotive light source technology is also the same. At the auto show in recent years, we can see that some models are equipped with various colorful LED lights, which have attracted the attention of consumers. LED ( LightEmittingDiode) It is a semiconductor electronic component that can emit light. The LED lamp, as its name implies, refers to the lamp using LED as the light source. In recent years, LED has been widely used in the field of automobiles due to its high brightness, rich color variety, low power consumption and long service life. The development history of automobile lamps and the origin of automobile lamps can be traced back to the end of the 19th century. In 1898, the Columbia electric car used electricity for headlights and taillights, so that electric lights were born. After more than a century of evolution and development, lights have become an indispensable part of ensuring safe driving of automobiles. Looking at the development of the lights, it is not difficult to see that this is a miniature history of science and technology. Generation car lights are incandescent lamps. In the 1913 S, incandescent bulbs came out. The working principle is that the current passes through the tungsten wire, and the hot tungsten wire produces light radiation, which makes the electric lamp emit bright light. Incandescent lamps have brought about a revolution in automotive lighting. In the 1925 S, electrical lighting was widely used in automobiles. Turning over the incandescent lamp page, we came to the era of the second generation of halogen lamps. Halogen lamps are actually a new generation of incandescent lamps. If the luminous efficiency of incandescent lamp is to be improved, the temperature of tungsten wire should be increased, but the sublimation of tungsten will be caused accordingly, and it will condense on the glass shell to make it black. Halogen elements or halides are filled into incandescent lamps, and the glass bulb blackening phenomenon of incandescent lamps can be eliminated by using the principle of halogen tungsten circulation. This is the reason for the halogen lamp, officially born in 1960. Compared with traditional incandescent lamps, they have higher brightness, longer service life and more energy saving. Nowadays, halogen lamps are still used in headlamps of many cars. Coming to 1991, the era of xenon headlights finally arrived. Xenon lamp, abbreviated as HID ( HighIntensityDis-chargeLamp), That is, high-intensity gas discharge lamps. Xenon lamp is one of the high-efficiency light sources made by the discharge phenomenon of high-pressure and ultra-high-pressure inert gas. Its illumination brightness is twice that of ordinary halogen lamps, while its energy consumption is only 2/3, and its service life can reach 10 times that of ordinary halogen lamps. Xenon lamps greatly increase the safety and comfort of driving, and also help relieve people's tension and fatigue in driving at night. After several generations of evolution, it has finally arrived at the LED light source technology, which is now the trend of lamp development. LED is LightEmittingDiode (Light emitting diode) The abbreviation of was born as early as 1960s. LED has many advantages. Because it is not a thermal lighting source, the service life can reach 5 ~ In addition to 10 years, it also has the advantages of rich color, safety and environmental protection, shock resistance and impact resistance, small size and strong environmental adaptability. These characteristics are attractive to the field of automotive lighting systems. It can be said that LED light source is a very ideal light source. Due to the high cost, technology and regulations, LED is still immature as an automobile headlamp. After a century of development, the lights on the car have been used for lighting from the beginning, and now they are used for various purposes such as night vision and decoration. I believe that in the near future, there will be more and more advantageous technologies for the development of automotive lighting.