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Nowadays, the lights have not only need to meet the lighting demand. According to the Ministry of Industry and Information Technology, as of the end of 2015, automotive lighting needs to meet the carbon dioxide emission reduction targets. In addition, new waves such as security and intelligence have also swarmed, which have provided a new vane for the development of the lamp market.
Three-legged market structure
Throughout the market, the current market for the lamp market has basically formed a three-dimensional pattern of halogen lamps, xenon lamps (HID) and LED lamps.
Since 1960, the halogen lamp used for the lamp has been more than half a century, and it can be used for a long time in the car. The biggest advantage is that it has formed a market economy, which makes it Manufacturing costs are cheaper, which is one of the main reasons why they can still exist in the market. The shortcomings of the halogen lamp are self-evident: the light output efficiency is low and the irradiation distance is short.
Xenon headlights (HID, or high-intensity discharge lamps) were used in automobiles in the early 1990s. The advantage is that the brightness of the light is twice that of halogen lamps. The efficiency of light energy is 80% higher than that of halogen lamps, while the energy consumption is only 2/3 of that of halogen lamps, and the service life is up to 10 times. In addition, since the color of the Xenon headlights is almost the same as that of daylight, Xenon headlights can create better visual conditions. Therefore, currently in the automotive lighting market, xenon lamps still occupy a dominant position.
In recent years, the lamp market has seen a new darling - LED light source technology. LED (English name LightEmittingDiode), which is a light-emitting diode, is a kind of semiconductor electronic component that can emit light, and LED lamp has the characteristics of high brightness, rich color, low power consumption, small size and long life. It has been widely used in the automotive field in recent years. As a representative of a new generation of energy saving and environmental protection, LED has begun to have the momentum to replace xenon lamps. According to the data, the performance of LED light output has an absolute advantage over that of xenon lamp and halogen lamp. The light performance of a 1000 watt halogen lamp is almost the same as that of a 200 watt LED lamp. The service life is up to 30,000 hours, which is 10 times that of a xenon lamp. A few days ago, such as Osram, Hella, Philips and other car light suppliers are also increasing the research and development of LED technology, it can be said that LED is becoming a new blue ocean in the lamp market.
The popularity of LED headlights is expected to face many constraints
Before 2010, the average growth rate of the domestic LED automotive lighting market was 13%, and in recent years, the LED lamp market has grown at a rate of more than 40%. It is predicted that this year, the LED lighting market will take off sharply, and the scale of China's LED industry will reach 500 billion. As a result, LED car lighting has become a big cake that the industry is openly optimistic, and its future prospects are promising.
Undoubtedly, LEDs are favored for their environmental protection, energy saving, and rich colors. This is also true. LED lamps have been widely used as auxiliary lamps for automobiles. In many places, such as turn signals and fog lamps, LEDs have replaced other forms of light sources. However, there is no explosive growth in LED lights. At its root, the cost is undoubtedly a major cause: OEMs are considering the cost of LED lights up to two to three times higher than traditional lights. The lamp supplier considers the high-end technology R&D investment, which is especially true for some self-owned car companies and traditional lamp suppliers.
In addition to cost, according to industry insiders, the complexity of LED systems is also a major obstacle to the maturity of this technology: reliable systems, efficient thermal management, compact optical design and extremely complex drivers. Technical barriers have yet to be further broken.
Therefore, in terms of the domestic market, it takes a long transition period for LEDs to completely replace traditional lamps. At present, LED headlights are mainly concentrated on a few high-end models (represented by Audi). Among them, high-position brake lights and side turn signals use more LED light sources, and headlight illumination has not yet formed a mature industrial model due to problems such as illumination distance and brightness.
Although the cost, technology and regulations of LED light sources have not been solved, it is believed that with the continuous decline of LED costs and the simultaneous improvement of technology, LEDs will be more widely used in the automotive field.
Smart headlight technology or will lead the industry change
From the field of automotive lighting, the development of automotive industry technology is changing with each passing day, and its development direction is becoming more and more intelligent and green. Laser headlights, intelligent LED headlights, matrix LED headlights, light source technology... More and more new technologies are coming into being, and a new revolution in the automotive industry is about to begin.
Volvo fatigue monitoring system
It is understood that the smart headlight technology on the market today is mainly led by German models. For example, the new generation of S-class intelligent LED headlights of Mercedes-Benz has active steering lighting, cornering auxiliary lighting, country roads, highways and dense fog modes. The unique shading function can erase the light camouflage of the opposite or co-directional vehicles. Each headlight assembly contains up to 56 LEDs, which can respectively illuminate, extinguish or adjust the brightness; BMW i8 laser The illumination of the lighting system can reach 170 lumens per watt, its length is only 10 microns, and the illumination distance is twice that of traditional LED. Compared to LED technology, the biggest improvement in laser technology lies in its integration. It has only one-hundredth of the size of the LED, but it has 1000 times its brightness. Therefore, the laser headlights have been considered as a "reasonable next step" after the LED headlights, and their future development has also been consistently optimistic in the industry; as the "light factory" known as Audi, its car headlight technology The skill is obvious to all. At present, Audi adopts the matrix LED headlight source technology on its modified A8/S8. It is understood that this technology consists of 25 LEDs, each of which can be automatically and independently Turn the action on or off. It is worth mentioning that the A8/S8 matrix LED headlights also incorporate a satellite navigation system. Before the driver starts to turn the steering wheel and the vehicle enters the corner, the matrix LED headlights will pre-adjust the illumination angle of the light source to bring the driver A safer and easier driving experience.
It can be found that from the development of the current lamp technology, LED and laser technology are gradually becoming the stage for the popularization of lamps, and the application of the two also makes the lamps not only more energy-saving, higher brightness, and farther illumination distance. It is also more avant-garde in shape. In the next stage, the combination of the light group and the electronic system will surely be the trend of the times. It is foreseeable that a technical war of smart headlights is coming soon!