LED lights potential unlimited future market dazzling point

LED Car Lights Development Prospects Standards and Designs of LED Car Lights At present, both the domestic and foreign countries use the conventional requirements of traditional tungsten lamps and halogen lamps as standards, and there is no independent production standard for LED light lamps. Therefore, currently, the design and production basis for the production of vehicle lamp assembly produced by LED lamp manufacturing enterprises is still based on national standards, SAE standards, etc. In order to make the light distribution and appearance of the LED lamp light source conform to the traditional standards, the LED light source must be designed into a three-dimensional array and be adjusted. LED lighting direction to achieve the purpose of light distribution, automotive lighting design is a new technology. Due to the monochromaticity of the LED light source, it is possible to directly select LED elements with different wavelengths to design turning lights, brake lights, and reversing lights with different functions without adding color filters. The addition of a color filter also increases the transmittance of light (the transmittance of the filter using a transparent polycarbonate or plexiglass is 92-95%), thereby improving the utilization of light.

In addition, the LED components used in LED lamps meet the requirements of traditional light distribution standards. The selection of the angle is very important. The correct light emitting angle means that the correct number of LED components can be used to achieve economical and practical purposes. Because the LED has little lateral astigmatism, the reflector effect of the lamp is less noticeable than that of a traditional light bulb, so the distribution of the LED light source array must be dispersed. On the contrary, it is contrary to the conventional light bulb, and the purpose of the dispersion is also more consistent with the visual habits. The heat dissipation design is a crucial part of the LED lamp design work. Whether the heat dissipation is good or not determines whether the service life of the lamp can reach the set value.

Vehicle LED lights are divided into two major categories of decorative lights and functional lights. Decorative lights are mainly used for beautification inside and outside the car. At present, many control circuits are used to achieve a variety of decorative effects. The function LED light is most suitable for the back light display of the digital instrument assembly, the front and rear lights, the brake light, the position light, the reversing light, the fog light, and the reading light. Regardless of the type, they all have many advantages such as no delay, energy saving, longevity, low heat, shock resistance, and high color purity, and they have become inevitable replacement products for tungsten lamps and halogen lamps.

Current domestic situation:

LED lights are the development trend The use of LED lights in domestic cars is less than 1%, compared with New Zealand and other countries where the use of LED lights reaches 30%. The main obstacle for the development of LED lamps in the Chinese market is the cost issue. LED chip production technology is difficult, the threshold is high, the crystal temperature, humidity, power supply, dust removal requirements are very strict, the initial need to invest heavily in building factories. At present, the main origin of LED chips is China's Taiwan, which accounts for 47% of the LED market. LED chips in mainland China are mostly resin-encapsulated and the chips need to be imported. This is a major reason for the high cost; the second is the domestic auto industry. Manufacturers and consumers do not know enough about LED lights. They are accustomed to comparing the cost of LED lights with traditional lights, which affects the rapid development of the LED light industry. At the same time, it also encourages the price of some workshop-type processing companies. Low-quality products are mixed into the LED lamp market.

However, with the rapid development of China's auto industry, this bad phenomenon has received more and more attention and effective control, especially the full-speed development of the automotive market in the past year, which has greatly promoted the development of China's LED lamp market: successfully launched the assembly The Buick Regal concept car with a full range of LED headlights other than headlamps; although the momentum of China’s auto growth has declined, the competition in the auto market is still fierce. New models and new models have been introduced, further accelerating new models. The development and development of LED lights. Among them, Toyota, General Motors, and Chery Automobile Manufacturing Co., Ltd. are responsible for the demand for models in this area. In particular, they have introduced the design requirements and plans for 7 LED signal lamps of 4 models, which indicates that LED is used in automotive applications. The field has broken through the small range of high brakes and entered a new stage.

Prospects:

LED lights are a major trend in the development of car lights. The common needs of lights and lighting are increasingly stimulating the rapid development of the LED chip industry. In the next five years, the quality and output of domestic LED chips will surely be significant. Improve and improve.

The dazzling product of the future market, the combination of automotive machinery and electronic technology, is a trend in the development of the international automotive industry. To a certain extent, the degree of automotive electronics has become one of the important indicators for measuring the level of automobiles. As a result, major automakers in the world have invested heavily in the development of a large number of automotive electronics products to equip new vehicles to make them more advanced, safe, comfortable and luxurious. At the same time, they have also achieved energy saving, environmental protection and multi-functionality. Thus improving its competitiveness. It can be said that in the next decade or so, the competition in the auto market will, by its very nature, be the competition in automotive electronics. According to preliminary forecasts, the price of automotive electronic products in vehicle costs will gradually exceed 45%.

At present, many automotive electronic and intelligent products that have been developed and mass-produced in advanced countries include: Engine Integrated Management System (EMS), Automatic Transmission System (ATS), Suspension Control System (TEMS), and Steering Control System (ECPS). Anti-lock braking system (ABS), airbags, collision avoidance systems, information and communication systems (including GPS, INS, ICC, AHS, etc.) and new, intelligent automotive lamps.

Compared to the most primitive candle lamps, and incandescent lamps that are commonly used in the future, even new HID lamps and LED lamps have appeared in recent years. Undoubtedly, LED lights with good quality, high quality and unique advantages are well-known as "car lamps that don't need to replace bulbs in a lifetime".

At present, many high-end cars in the world, such as Cadillac, BMW, Toyota, Mercedes-Benz and Ford, have also launched new-style cars equipped with various brilliant LED lamps to attract customers.

China's LED lights to the personalized, artistic development of automotive lamps and lanterns on the parameters of the LED device performance requirements are high, mainly in three aspects: First, requires high efficiency, high power and high reliability (-40 °C -125 °C) Second, the electrical and optical parameters of the stability and consistency of the high requirements, such as: the same batch of components of the threshold voltage inconsistency must be less than 0.1V, monochromaticity is better, color must also be less than 5 nm range; The third is that after the LED component is lighted at 136V for 2000 hours (operating under a direct current), its luminous intensity attenuation is less than 20%.

At present, with regard to the market situation of automotive LED components, the United States Lumileds and Germany Osram have occupied most of the market share with high-quality, multi-category lamps; at home, in China's Taiwan and enterprises in the Pearl River Delta and Yangtze River Delta, The development is also in good shape. Especially in the past two years, their quality has been significantly improved, and the image of “relying on a cheap market to win a certain market” has been gradually changed, and remarkable progress has been made in terms of high power.

Therefore, from the above analysis is not difficult to find: At present, China's LED high position brake lamps have been further popularized, prices have steadily decreased, and LED rear brake lights, turn signals and fog lamps have begun commercialization, the entire LED automotive lighting has been moving towards personalization and artistic development. At the same time, the LED intelligent control system has also developed rapidly - at present, the focus of research on LED automotive lamps is the combination of white LED headlamps, and LED lights and AFS (adaptive headlight control system). Among them, the research of high-efficiency, high-power, high-reliability LED components, lighting and special heat dissipation technologies, and optical design are the key to the entire technology.

LED lights have unlimited potential and the cost bottleneck remains to be eliminated. LED lamps are used as the fourth-generation automotive light source. They have been used by many car manufacturers to produce various models of car lights. LED lights have many advantages such as no delay, energy saving, longevity, low heat, shock resistance, and high color purity. They have become the inevitable substitute for tungsten lamps and halogen lamps.

Vehicle LED lights are divided into two major categories of decorative and functional lights. The function LED light is most suitable for the back light display of the digital instrument assembly, the front and rear lights, the brake light, the position light, the reversing light, the fog light, and the reading light. The use requirements of the LED are basically similar to those of commonly used LEDs, but the LED's angle, color difference, brightness, voltage discrete value, light failure, heat dissipation, anti-violet and reliability are required to be high. LED headlamps are currently in the development stage, and Japanese small companies have exhibited examples of lights. Germany's Hella has introduced the concept product with a central light source and fiber optic guide light, but it has not yet been mass-produced. The main reason is that the luminous flux of the single LED component is not enough (currently the white LED market only introduces 2.6Lm of conventional current LED), and the heat dissipation and light efficiency of large-size chip packaging products are still the main problems, along with the continued popularization of the crystal growth technology and material research. Progress, the industry is expected to be listed in the next five years.

The LED demand for car lights is stimulating the development of the LED chip industry. In the next five years, the quality and output of LED chips in China will be significantly improved to meet this demand. A few years ago, the expansion of the LED lamp market was slow, but there was an acceleration after 2010. It is expected that there will be rapid development in the near two years, and LED lights will be used in the front combination lamp and rear group lamp of each car in expectation of lights (such as rear brake lights and rear turn signals). In the next five years, China's LED car lights will have large-scale development.