New lighting applications are sought after by the automotive industry
The development of automotive lighting has long been around the requirements of regulations, safety, environmental protection and styling (beauty). With the advancement of technology, meeting regulatory requirements is not difficult for luminaire manufacturers, so manufacturers will pay more and more attention to safety and environmental protection, namely how to improve active safety and more energy-saving. Environmentally friendly or recyclable materials. At the same time, like other industries, electronics, servo systems, and various types of sensors are increasingly used in automotive lighting. The application of new lighting methods and new light sources has become a hot spot for development. Conventional automotive headlights provide two illumination modes through the light source/mirror (or lens), namely high beam and low beam illumination. The AFS (adaptive front-lighting system) is an integration of modulatable optical systems, electronic controls, servo systems and electronic maps (GPS) that provide such things as urban roads, country roads, highways, detours, bad weather. Different lighting modes under different traffic conditions greatly improve the safety and comfort of driving at night. At present, Europe has established regulations for AFS. The first AFS headlamps (provided by Hella, Germany) will also be equipped on a Mercedes-Benz at the end of this year (the lights are adjusted to achieve country roads through different speeds). , different lighting requirements under urban road and highway conditions). The interior environment and the convenience of operation are important factors affecting the driver's mentality and driving status. Therefore, various forms of interior lighting and lighting control have appeared in recent years. Such as the combination of LED and light guide to achieve lighting in the glove box, glove box, foot position, etc. These lights take into account the light and dark vision and color adaptability of the human eye to minimize the impact on the driver, while taking into account the interior The overall shape. The use of intelligent non-contact lighting switches is also increasing. The switch can sense the difference in the movement of the human hand to achieve different lighting effects, but does not respond to the movement of the item. At present, LEDs, light guides, non-contact switches, etc., which are used for interior lighting or indication, are developing in the direction of standardization, modularization, and humanization. The weather and road conditions are ever-changing. The single lamp illuminance (brightness) currently used has not met the safety requirements. Therefore, like the headlamps, the taillights are also developing in the direction of intelligence. For example, a taillight developed by the German company Hella, its braking indication effect will be adjusted according to the conditions of braking acceleration, sunshine, etc., that is, the braking acceleration is high, and the brightness of the braking lamp is high when the sun is strong, thus better indicating Other road traffic participants. At present, many models seen in China use gas discharge lamps as the light source for headlights, such as Audi, Volkswagen, Honda, Toyota, and Citroen. Compared with halogen bulbs, gas discharge lamps have low power consumption (35W), high brightness (three times that of halogen bulbs), and long life (comparable to vehicle life). The disadvantage is that the cost is high. In addition to the ignition/transformation device, the ECE regulations also need to be equipped with a lamp cleaning device, a body attitude sensor system, and an automatic lamp adjustment system. Automotive signal lights, especially for braking and steering, have used LEDs as a light source on a large scale. LED also has the characteristics of small footprint, light weight, flexible lamp design, low power consumption, long life, fast response time, etc. More importantly, its own development speed is also very fast.
Headlamps (far, low beam) using LEDs as light sources are not currently used in any vehicle type, and there are many factors that limit their use in headlamps, such as light output (intensity, spectral) stability, devices. The cost is high, the auxiliary optics are not mature, and the lamps are cooled. According to reports, Japan's Otaru has cooperated with Japanese LED manufacturers to develop LED headlamps, which will be equipped with a Toyota model in 2007, but the lamp can only use LED as a light source in low beam. Full-featured (far, low-light) LED headlamps are expected to be available in 2008. Due to the rapid development of LED technology, there is reason to believe that LED will have a major breakthrough in the application of headlights within 3 years to 5 years. New lighting methods, new light sources, new processing techniques and the use of new materials will give car lighting a refreshing feel and, of course, make our driving safer. At the same time, it is worth noting that with the increasing use of buses and various control devices in automobiles, lighting fixtures that work through communication/protocol with automotive bus/controllers are also increasing, which are bound to be made for some lamps. The aftermarket of the business and lighting has had a major impact.
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