At present, LED has been applied to the interior and exterior of automobiles, especially in automotive interior lighting. The application of color LEDs has been very mature, for example, for instrument panel, backlight switch, auto reading lamp or head-up display system, etc. The "Color-on-Demand" feature allows car manufacturers to differentiate themselves from other competitors by using their own distinctive colors, or to distinguish between different series of products using colors.
The development history of LED car lights The development of LED car lights is directly related to the development of LED light sources. The phenomenon of semiconductor electroluminescence was discovered as early as 1907. Due to the weak light, mass production was difficult and progress was slow. In 1968, Monsanto introduced the red LED with a GaAsp/GaAs structure with a light intensity of more than 20mcd. This breakthrough has greatly accelerated the development of LEDs. Subsequently, red, yellow, and green LEDs with a luminous intensity of 1000 mcd were developed in succession. Preliminary applications were obtained on signal indications of instruments and telecommunications, forming an early application market for LEDs. However, due to its performance problems such as light intensity and light attenuation, it has not been widely used in automotive lighting. Until 1990, U.S. HP and Toshiba Corporation of Japan introduced red and yellow high-brightness LEDs of InGaAlP/GaAs structure with a light intensity exceeding 1000 mcd, and Inja/Al2O3 blue and green high-brightness LEDs from Japan Nichia Corporation in 1993. Mass production has paved the way for the LED lighting of automotive lamps.
In 1985, LED car lights appeared for the first time on passenger cars. In 1986, the use of LED high-level brake lights on the Nissan 300zx car marked the official start of the era of LED car lamps. Famous international automobile brands such as BMW, Cadillac, Buick, Volkswagen, Ford, Mercedes-Benz, Toyota, Mitsubishi, Mazda and Skoda have successively introduced LED automotive lamps.
LED auto lamps are growing at a double-digit rate each year. The output value in 2005 has reached 546 million U.S. dollars, accounting for 14% of the world's LED applications. In 2000, China used the LED high-position brake light on the Shanghai Volkswagen Santana 2000. China's LED auto lamps and lanterns are increasing at a rate of 70%-80% every year. In 2006, the output value exceeded 100 million yuan.
The seven advantages of LED lights are significant compared to incandescent lamps. First, long life, usually up to tens of thousands or even 100,000 hours. Some people think that if the future of automotive lighting using LED, the entire automobile life does not have to replace the lamp; Second, very energy-efficient, at least more than half the power than incandescent lights of the same brightness; Third, high light quality, basically no radiation, is "green "Light source; Fourth, LED's simple structure, internal bracket structure, surrounded by a transparent epoxy resin seal, good seismic performance; Five, no hot start time, fast light response speed (nanoseconds), suitable for fast movement The use of objects; 6, the application of voltage between 6-12 volts, can be applied to the car; seven, LED footprint is small, the designer can freely change the lamp mode, so that the car shape diversity. Automobile manufacturers favor LED, which is entirely determined by the advantages of LED itself.
The development of LED lights in the automotive industry in the future is also evolving. External applications such as brake lights, taillights, turn signals, reversing lights, and high-level brake lights have been applied. The brake lights and tail lights are also used. High brake light applications have a large scale. As the vehicle headlamp lighting, due to the need for high-power LED, subject to technology and LED cost-effective constraints, especially in the optical, electronic control, thermal management, there are still some difficulties, the popularization also takes three to five years, the industry It is only applied on some luxury high-end models.
In addition to the taillights, high-position brake lights, etc., which are currently used more generally, LED lights will be used in large-scale applications for turn signals and reversing lights in the future.
In 2010, the market size of domestic LED auto lamps may exceed 1 billion yuan, and the output value of 3 billion yuan per year may be formed within 5 years. According to iSuppli's “2010 LED Special Report†released in 2009, it is estimated that by 2013, approximately 95% of new cars worldwide will use LEDs in one or more taillights.
At present, the sales of LED automotive lighting application market maintain an annual growth rate of about 10%, but the proportion of domestic LED automotive lamps is not high. The models with large LED usage are concentrated in mid-to-high-end auto companies. These auto companies generally have limited LED brands and it is difficult for domestic LED companies to enter their supply chains. In addition, compared with international famous big brands, domestic LED may have more problems in terms of lifespan and homogeneity of sorting. At the same time, auto lamps themselves have strict market supervision, high threshold, and automobiles as luxury consumer goods. Right for one-on-one customers, any quality problems will cause complaints, domestic LED does not have the opportunity to go through this market long-term large-scale experience, it is difficult to achieve automotive LED standards. Automotive lighting is a very professional field. To make a LED car lamp, whether it is a car lighting company or an LED company, it will be difficult to go it alone. It needs a car lighting company to fully communicate with the LED company, especially before the LED car. Lighting development.
According to statistics, at present, there are 20 million households that have the ability to purchase cars in China, and China may become the third largest automobile market in the world, accounting for 6% of the global share, second only to the United States and Japan. By 2025, the scale of China's auto market will reach the current size of the US auto market. China has become the fastest growing area of ​​automobile sales in the world today. According to the statistics of the China Association of Automobile Manufacturers, the sales of domestic car lamps reached more than 15 billion yuan in 2009, of which the market share of LED lamps increased year by year. Take Shanghai Xiaoxuan Automobile Company as an example, LED lamp sales accounted for all cars in 2009. 11.7% of lamp sales are expected to account for more than 15% of LED lamp sales in 2011. By 2015, LED lamp sales will account for more than 30% of the total sales of car lights.
At present, there is a big difference between the prices of LED lights and traditional lamps. For example, for a medium-to-high-end sedan, the incandescent lamp sets 120 yuan/set for the rear lamp, and the LED combination lamp requires 210 yuan/set. Therefore, LED prices have fallen sharply, luminous efficiency has been continuously improved, and heat-dissipation technology has been increasingly improved. This is the main focus of the development of LED automotive lamps in the future. Although there are still some problems that need to be solved, LEDs have the advantages of small size, vibration resistance, energy saving, long life, etc., and at the same time give the designer a broader design space. These are all factors that increase the application of LEDs inside and outside the vehicle. With the continuous improvement of product technology and continuous expansion of product categories, the future of automobiles will develop toward security and intelligence.
The development history of LED car lights The development of LED car lights is directly related to the development of LED light sources. The phenomenon of semiconductor electroluminescence was discovered as early as 1907. Due to the weak light, mass production was difficult and progress was slow. In 1968, Monsanto introduced the red LED with a GaAsp/GaAs structure with a light intensity of more than 20mcd. This breakthrough has greatly accelerated the development of LEDs. Subsequently, red, yellow, and green LEDs with a luminous intensity of 1000 mcd were developed in succession. Preliminary applications were obtained on signal indications of instruments and telecommunications, forming an early application market for LEDs. However, due to its performance problems such as light intensity and light attenuation, it has not been widely used in automotive lighting. Until 1990, U.S. HP and Toshiba Corporation of Japan introduced red and yellow high-brightness LEDs of InGaAlP/GaAs structure with a light intensity exceeding 1000 mcd, and Inja/Al2O3 blue and green high-brightness LEDs from Japan Nichia Corporation in 1993. Mass production has paved the way for the LED lighting of automotive lamps.
In 1985, LED car lights appeared for the first time on passenger cars. In 1986, the use of LED high-level brake lights on the Nissan 300zx car marked the official start of the era of LED car lamps. Famous international automobile brands such as BMW, Cadillac, Buick, Volkswagen, Ford, Mercedes-Benz, Toyota, Mitsubishi, Mazda and Skoda have successively introduced LED automotive lamps.
LED auto lamps are growing at a double-digit rate each year. The output value in 2005 has reached 546 million U.S. dollars, accounting for 14% of the world's LED applications. In 2000, China used the LED high-position brake light on the Shanghai Volkswagen Santana 2000. China's LED auto lamps and lanterns are increasing at a rate of 70%-80% every year. In 2006, the output value exceeded 100 million yuan.
The seven advantages of LED lights are significant compared to incandescent lamps. First, long life, usually up to tens of thousands or even 100,000 hours. Some people think that if the future of automotive lighting using LED, the entire automobile life does not have to replace the lamp; Second, very energy-efficient, at least more than half the power than incandescent lights of the same brightness; Third, high light quality, basically no radiation, is "green "Light source; Fourth, LED's simple structure, internal bracket structure, surrounded by a transparent epoxy resin seal, good seismic performance; Five, no hot start time, fast light response speed (nanoseconds), suitable for fast movement The use of objects; 6, the application of voltage between 6-12 volts, can be applied to the car; seven, LED footprint is small, the designer can freely change the lamp mode, so that the car shape diversity. Automobile manufacturers favor LED, which is entirely determined by the advantages of LED itself.
The development of LED lights in the automotive industry in the future is also evolving. External applications such as brake lights, taillights, turn signals, reversing lights, and high-level brake lights have been applied. The brake lights and tail lights are also used. High brake light applications have a large scale. As the vehicle headlamp lighting, due to the need for high-power LED, subject to technology and LED cost-effective constraints, especially in the optical, electronic control, thermal management, there are still some difficulties, the popularization also takes three to five years, the industry It is only applied on some luxury high-end models.
In addition to the taillights, high-position brake lights, etc., which are currently used more generally, LED lights will be used in large-scale applications for turn signals and reversing lights in the future.
In 2010, the market size of domestic LED auto lamps may exceed 1 billion yuan, and the output value of 3 billion yuan per year may be formed within 5 years. According to iSuppli's “2010 LED Special Report†released in 2009, it is estimated that by 2013, approximately 95% of new cars worldwide will use LEDs in one or more taillights.
At present, the sales of LED automotive lighting application market maintain an annual growth rate of about 10%, but the proportion of domestic LED automotive lamps is not high. The models with large LED usage are concentrated in mid-to-high-end auto companies. These auto companies generally have limited LED brands and it is difficult for domestic LED companies to enter their supply chains. In addition, compared with international famous big brands, domestic LED may have more problems in terms of lifespan and homogeneity of sorting. At the same time, auto lamps themselves have strict market supervision, high threshold, and automobiles as luxury consumer goods. Right for one-on-one customers, any quality problems will cause complaints, domestic LED does not have the opportunity to go through this market long-term large-scale experience, it is difficult to achieve automotive LED standards. Automotive lighting is a very professional field. To make a LED car lamp, whether it is a car lighting company or an LED company, it will be difficult to go it alone. It needs a car lighting company to fully communicate with the LED company, especially before the LED car. Lighting development.
According to statistics, at present, there are 20 million households that have the ability to purchase cars in China, and China may become the third largest automobile market in the world, accounting for 6% of the global share, second only to the United States and Japan. By 2025, the scale of China's auto market will reach the current size of the US auto market. China has become the fastest growing area of ​​automobile sales in the world today. According to the statistics of the China Association of Automobile Manufacturers, the sales of domestic car lamps reached more than 15 billion yuan in 2009, of which the market share of LED lamps increased year by year. Take Shanghai Xiaoxuan Automobile Company as an example, LED lamp sales accounted for all cars in 2009. 11.7% of lamp sales are expected to account for more than 15% of LED lamp sales in 2011. By 2015, LED lamp sales will account for more than 30% of the total sales of car lights.
At present, there is a big difference between the prices of LED lights and traditional lamps. For example, for a medium-to-high-end sedan, the incandescent lamp sets 120 yuan/set for the rear lamp, and the LED combination lamp requires 210 yuan/set. Therefore, LED prices have fallen sharply, luminous efficiency has been continuously improved, and heat-dissipation technology has been increasingly improved. This is the main focus of the development of LED automotive lamps in the future. Although there are still some problems that need to be solved, LEDs have the advantages of small size, vibration resistance, energy saving, long life, etc., and at the same time give the designer a broader design space. These are all factors that increase the application of LEDs inside and outside the vehicle. With the continuous improvement of product technology and continuous expansion of product categories, the future of automobiles will develop toward security and intelligence.
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