At present, LED has been applied to automobile internal and external, especially in car interior lighting, Color LED application has been very mature, such as used for panel, backlight lighting switch, auto reading lamp or payable to display system, etc., or the car use "on-demand choice" (Color - on - Demand) function, let the car makers can through the use of their own special identification Color, and other competitors, or use distinguish Color distinguish different series of products.
 
The development history of LED car light
 
LED the development of auto lamp directly with the development of LED light source associated. Semiconductor electroluminescent phenomenon as early as in 1907 found that the light is very weak, the batch production difficult and progress will be slow. In 1968 the United States monsanto launched light intensity of more than twenty MCD GaAsp/GaAs structure of red LED as breakthrough point, greatly accelerate the development of LED. Then we have developed a strong light 1000 MCD red, yellow, green LED, in instrumentation, telecommunications signals indicating a preliminary application, formed the LED the early application market. But because of its light intensity, light attenuation performance problem is not in the automobile lamps and lanterns were widely available. Until 1990 the United States HP company, Japanese Toshiba company came out with light intensity of more than 1000 MCD InGaAlP/GaAs structure of red, yellow high brightness LED and Japan in 1993, the company invented InGaN/Al2O3 blue, green high brightness LED as mark, technically and batch production for the automotive light source LED turn pave the way.
 
1985 LED car light first appeared in bus, 1986 Nissan300zx type car use LED high brake lamp marked the official start of the LED lamps and lanterns car times. The international famous brand of car such as BMW, Cadillac, buick, Volkswagen, ford, Benz, Toyota, mitsubishi, Mazda and skoda, etc has introduced LED auto lamps and lanterns.
 
LED auto lamp every year by double-digit growth rate in 2005, annual output value has reached 546 million us dollars, accounting for 14% of the world LED application. In 2000 China in Shanghai vw santana 2000 type on the first to use LED high brake lamp. Our country automobile lamps and lanterns LED by 70% a year - the rate of 80% growth in 2006, the output value of more than one hundred million yuan.
 
LED lamp of the seven big advantage
 
LED and incandescent lamp more significant advantages. A, long service life, general can reach tens of thousands of hours and even. Some people think that if the car of the future light use LED, the whole car service life without replacement lamps and lanterns; Second, the very energy efficient, than the same brightness of the incandescent lamp at least more than half power saving; Three, light quality, basically no radiation, belongs to the "green" light source; Four, LED structure simple, internal support structure, all round with transparent epoxy resin sealing, seismic performance is good; Fifth, do not need to warm start time, bright light response speed (nanosecond level), it is suitable for fast moving objects use; Six, suitable voltage in 6-12 volts between, completely can be used in the car; Seven, LED occupancy volume small, the designer can change mode of lamps and lanterns, make the automobile modeling diversification. Automobile manufacturers favor LED, LED the advantages of itself is completely determined.
 
LED lamp in the future development of the automobile industry
 
Automobile external application is also in constant development, brake lamp, tail lamp and turn light, down light, high brake lamp and so on all has been used LED, including brake lamp, tail lamp and high brake lamp large scale application. As a vehicle headlamps lighting, due to the need for high power LED, LED by technology and the restriction of performance, especially in optical, electronic control, thermal management field and have certain difficulty, popularize the need three to five years, the industry also only in some high-end luxury car to start the application.
 
In addition to the current application is common tail light, high brake lamp, etc., will turn light, reversing light will also large-scale application of LED.
In 2010 the domestic LED car lamps and lanterns of the size of the market may be more than 1 billion yuan, five years may form the output value 3 billion yuan a year. According to iSuppli in 2009 with the release of the "2010 LED project report", it is estimated that by 2013 about 95% of new car will be in one or more tail lamp lighting using LED.
At present, the LED auto lamps and lanterns application market sales, each year about 10% growth rate, but the domestic LED auto lamps and lanterns proportion is not high. LED using quantity is big models focus on the middle and high-end of the automobile enterprise, and the motor company usually LED to the brand is limited, the domestic LED enterprise difficult into its supply chain. In addition the domestic LED and internationally renowned brands, compared to the life and the uniformity of sorting aspects possible problems more, at the same time, the automobile lamps and lanterns itself market regulation strictly, the threshold is higher, the car as a luxury consumer goods, after sales with one-on-one customer, any quality problem can cause complaint, domestic LED no chance after the market long-term large-scale experience, it is difficult to reach the car LED standard. The automobile lamps and lanterns is very professional in the field, to do car LED lamps and lanterns, whether the automobile lamps and lanterns enterprise or LED enterprises, the greater will be very difficult, need auto lamps and lanterns enterprise and LED enterprise full communication, especially in the LED the development of automobile lamps.
 
According to statistics, at present our country has the ability of car family for 20 million households, China could become the world's third largest car market, accounting for 6% of the global share, second only to the United States and Japan. By 2025, the scale of China's automobile market will reach the United States currently has a car market scale. China has become the world's fastest growing automobile sales area. According to China's auto industry association statistics, 2009 domestic lamp sales reached 15 billion yuan of above, the LED light for the proportion of the market is rising year by year, with Shanghai small si lamp company as an example, 2009 LED lamp sales accounted for 11.7% of sales, all lights are predicted in 2011 LED lamp sales accounted for light ratio will reach more than 15%, and by 2015 LED lamp sales accounted for the proportion of all sales lamp will reach more than 30%.
 
At present, the LED lamp and traditional lamps and lanterns price have bigger difference, such as a high-grade car, incandescent lamp combination taillight RMB 120 / set, and LED back to the combination of 210 yuan per set. Therefore LED price has dropped considerably, and constantly improve the luminous efficiency and heat dissipation technology increasingly improvement is the future development of the main points LED the automobile lamps and lanterns. Although some problems still need to be resolved, but LED small volume, resistance to shock, energy saving, long life etc advantages, at the same time gives the designer a broader design space, these are the increase in car LED inside and outside the elements of application. With product technology continuously improve, the product type to develop unceasingly, the future will be to secure, intelligent direction development.