Xenon lamp is a new type of headlamp containing xenon, also known as high intensity discharge lamp, abbreviated as HID Intensity Discharge Lamp in English. Xenon lamp broke the luminous principle of tungsten filament invented by Edison, and the tube was filled with high-pressure inert gas-xenon instead of the traditional filament. Mercury and carbon compounds are on two electrodes, and xenon is excited to emit light by a ballast with a high voltage current of 23,000 volts, forming a perfect white arc between the two electrodes, and the emitted light is almost perfect.
Luminous principle of xenon lamp
Automobile HID xenon lamp is different from traditional halogen lamp. It is a high-pressure discharge lamp. Its luminous principle is that xenon reacts with rare metals by positive and negative electricity, so there is a small glass ball in the lamp tube, which contains xenon and a little rare metals. As long as they are stimulated by current for chemical reaction, both of them will emit light with a color temperature as high as 4000 K-12000 K. It uses a special ballast to generate a trigger voltage of more than 23000V by using the voltage of automobile battery 12V to start the lamp. When starting, the brightness of 0.8 seconds is 20% of the rated brightness, reaching the brightness of halogen lamps, and making the headlights reach more than 80% of the rated brightness within 4 seconds. After the lamp is stabilized, the ballast provides the lamp with a power supply voltage of about 80V to keep the lamp running at a constant power. The performance advantage of xenon lamp (HID) is 1. The general 55W halogen lamp can only produce 65,438+0,000 lumens of light, while the 35W xenon lamp can produce 3,200 lumens of strong light, with a brightness increase of 300%, and it has a long wide-angle field of vision, which brings you unprecedented driving comfort. Making the night no longer dark and the vision clearer can greatly reduce the traffic accident rate. 2.HID xenon lamp uses electrons to excite gas to emit light, and there is no tungsten wire, so its life is longer, about 3000 hours, which greatly exceeds the total hours of driving at night. Halogen lamps only last 250 hours. 3. Strong power saving: Xenon lamp only has 35W, but the light emitted is more than 3.5 times that of 55W halogen lamp, which greatly reduces the load of automobile power system, saves 40% power loss, correspondingly improves vehicle performance and saves energy. 4. Good color temperature: 4300K- 12000K, etc. 6000K is close to the sun, which is well received by users, while the halogen lamp is only 3000K, and the light color is dark and red. 5, the output is constant, safe and reliable: when the automobile power supply system and battery fail, the ballast automatically shuts down and stops working. (Comparison table of lumen, color temperature and life of xenon lamps and halogen lamps) The development of xenon lamps (HID) in the world has been published since Mabao published the principle of automobile HID in 199 1, and HID xenon lamps were first applied in 1995. I believe it will become a necessary assembly for automobiles after ABS braking system and airbag ... HID xenon lamp can triple the brightness of the original halogen lamp, with better color, stronger color temperature penetration, longer illumination time and more stable performance. It is favored by more and more car modification users around the world. At present, the demand for HID xenon lamps in Europe is increasing at an annual rate of 65,438+03%. HID xenon headlights are widely installed in mid-to high-end cars in Japan, but they are more popular in Hong Kong. At present, Audi A6, Passat 2.8V6 and Sonata 2.7 are installed on domestic cars. It is predicted that in the next two or three years, the number of domestic cars equipped with xenon lamps will greatly increase. Experts predict that by 2008, the proportion of new cars equipped with HID xenon lamps will reach 265,438+0% (4.8 million vehicles) in Europe and 40% (3.8 million vehicles) in Japan. Xenon headlights will replace halogen lamps and become a new trend in 2 1 century. However, few high-end cars in China will choose to equip themselves with xenon headlights because of cost control. There are only a handful of powerful automobile xenon lamp manufacturers in the world, with Germany's Hella, Japan's Panasonic and South Korea's KDG as technical representatives. The recognized brands in Europe are Hella, Philips, Osram and KDG. These four products are stable in performance and pure in color, while domestic xenon lamp manufacturers represented by China and Guangdong (actually assembling and processing) are low in price, and the quality is difficult to guarantee. The stability of HID xenon lamp is mainly determined by ballast and high-voltage bag, and the related technology patents are monopolized by several world-renowned companies such as Hela, Panasonic and KDG. With the close relationship between OEM and ODM among global companies, the production of xenon lamp high-voltage packaging is basically controlled by the above three companies. For example, in Asia, those well-known brands of xenon lamps are basically manufactured by KDG, and the KDG factory has seven patents related to xenon lamp technology, which occupies a considerable advantage in xenon lamp technology and production capacity. At present, many domestic xenon lamps on the market are actually branded by different dealers according to their needs, and the price is around 1000 yuan. In 2005, there were many domestic brands of xenon lamps in Shenzhen, but in 2006, there were basically no domestic brands of xenon lamps on sale in Shenzhen market, mainly because the product quality was not up to standard. In the market, the price of double xenon lamps in PIAA of Japan is above 1000 yuan, and the price of single lamps in Philips is above 5,000 yuan. The price is so high that some middle and low-end car owners are far behind! This is the result of brand effect and some business hype.