LED semiconductor lighting network car headlights take a long time, need to be replaced, this time you need to modify the car headlights. Today, Xiaobian will introduce various car headlights and discuss how to choose car headlights to be the most practical. The headlights on the market include halogen headlights, xenon headlights, LED headlights and laser headlights.
Halogen headlight
Halogen lamps are generally divided into: iodine tungsten lamps and bromine tungsten lamps, which are actually a special type of incandescent lamps.
Low cost and fast start-up speed. Many entry and low-end models will choose halogen lamps, which has the highest penetration rate in the market.
Rain and snow have strong penetrating power and are more penetrating than xenon lamps. Some off-road vehicles also choose to install halogen lamps.
Insufficient brightness is the biggest drawback of halogen lamps. The road lighting effect is not as good as that of xenon lamps and LED lamps. It has better lighting effect when used with reflectors. The service life is short, about three years.
Xenon headlights
Xenon lamp, the full name is HID (High Intensity Discharge Lamp) gas discharge lamp.
Xenon lamps are three times more powerful than halogen lamps, greatly improving driver safety and comfort, and consume only two-thirds of the cost of halogen lamps. However, the startup speed is slow. After the headlights are turned on, it takes three to four seconds to achieve the best brightness. At present, it accounts for a large part of the market share of headlights, such as some medium and high-class models.
LED headlights
LED light is the abbreviation of LightEmittingDiode, commonly known as light-emitting diode. Compared with xenon lamp and halogen lamp, LED has higher luminous efficiency, and the energy consumption is only 1/20 of that of halogen lamp. In addition, the cost of LED component is greatly reduced year by year, and the current cost And prices are still falling by more than 20% per year.
Compared with xenon lamps, LED lights are bright enough and the illumination distance is relatively limited, generally less than 10 meters.
It is worth mentioning that the LED lamp has high luminous efficiency, is very energy-saving and environmentally friendly, but it is slightly weaker to withstand high temperature, and the concentrating effect is slightly worse than that of xenon headlights.
LED lamps have many advantages, convenient brightness adjustment, long life and low heat generation, but the price is expensive, which is common in high-end models and top models.
Statistics show that in 2015, the global automotive lighting market grew by 5.8% compared with 2014, with a total volume of nearly US$23 billion. By 2020, with the outbreak of new energy vehicles, the automotive lighting market will grow to 30 billion US dollars. In 2020, the global automotive LED lighting market is expected to exceed $10 billion.
Laser headlight
The laser headlights are twice as long as the LED headlights, and basically have all the advantages of LED headlights. The single light source is smaller, which is more conducive to modeling, and has a longer life, higher utility and longer illumination distance. More intelligent. The only downside is that the cost is too high and there is still a long way to go before it is popular. Currently, Audi and BMW have already demonstrated their laser headlights on some models.
Comparison table of advantages and disadvantages of four kinds of car headlights
to sum up:
The LED headlights are small and energy-saving, and the xenon headlights are integrally formed and have a long irradiation distance. Laser headlights are the future direction of car lights, and if they can solve the cost problem, they are expected to be popular. The most popular on the market today are halogen headlights, which are mostly xenon headlights and LED headlights.
The most reasonable is to choose different car headlight configuration combinations according to the needs of their own vehicles. When driving at night, the headlights of the car need to be used interchangeably. The dipped beam can be selected from xenon lamps and LED lights to ensure stable illumination for a long time at night and the light source is uniform. The driving exchange will be displayed by high beam lights. It is best to use halogen or LED lights because the brightness of the xenon lamp is slow to start. Finally, to be atmospheric, beautiful and practical, LED headlights are absolutely tempting.
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