The main features of Audi R8 is full LED lights on the car, and automotive lighting LED supplied by Lumileds and Osram companies. Cadillac EscaladePlatinum Platinum Edition SUV, is the first LED headlamp multi-purpose sports car. Automotive LED light experienced the development stages of technology verification concept car shows in recent years, finally ushered may be used in future mass production cars, marked by three events: Toyota Lexus LS600h is the world's first vehicle to adopt automotive LED lights, but only used LED in the last light, remote light source is still halogen.
The milestone will mean that LED headlamps dominate the car flew into the field of innovative lighting technology? According to experts predict that: Maybe not. Because even the cost of LED in accordance with Moore's Law predicted rate of decline, it is to low to work with HID (high intensity discharge) xenon lamp is also yet to match the same price for many years; and the cost to the family down LED with halogen light comparable, it would take a long time after a period of more history.
According to Hella (Hella), President Fischer said that the size of vehicle LED lighting market currently accounts for only a few percent of its small share, so the bulk of the models (such as the GM / Chevrolet Malibu models like the Department of models) is very interested in matching supply. But the LED models that want to achieve in large quantities to the Malibu supply levels, still need to overcome a series of technical and cost problems, the course of at least ten years to go.
Visteon said, LED is indeed the pace of the stock market than originally expected to be slower, we had predicted in 2004: LED lights will soon blow into the market, while the HID eliminated. Clearly, the current situation is not the case, although the LED technology has been expected to evolve faster than reality. It seems the high cost is not the only factor impeding LED market, there are still technical challenges of performance problems to be overcome.
For example, for a single light source, LED's light intensity is still insufficient. The single point of not bright enough wishful calculations difficult to achieve the following: reduction constitutes a combination of LED light fixtures will help reduce the number of automotive lighting and easy and flexible arrangement of space and simplify wiring and installation of lighting systems and reduce production costs.
The mainstream of the current status of LED supply chain is: Hella General Cadillac Escalade supply the LED light source component model is to Osram (Osram) procurement; and small series of lights (Koito) the use Nichia's LED lighting products, further supporting the model in the Toyota LS600h; Philips Lumileds LED light source to supply AL (automotive lighting) company, and then by the latter for the Audi R8 headlight system configuration.
Koito Europe and the U.S., according to business manager, said they would not zoned for the prison and the self-limited type of light source and procurement companies, regardless of who produced the (Philips, Osram, or Toyota Gosei) can be bought. Obviously, part of a lighting system suppliers are trying to maintain their flexibility in the procurement source components, to look at: Which device vendors technology advances fastest, most cost effective.
LED products available today approved the photoelectric conversion (energy density) index of 80 lumens per watt (80lm / W) or more, while the HID lamp is 90lm / W, halogen is 201m / W. According to Hella Bulletin: the latest The prototype LED indicators have been developed up to 161lm / W. Hella also predicted: in the next 3-5 years, from the bottom of the same power chip LED light intensity will increase by 50%. this means that LED lamps will not only brighter, and reflects the reduction of its energy consumption, thereby improving vehicle fuel economy.
It is estimated that to replace halogen lamps with LED can be used to enhance the vehicle's mpg (per gallon fuel mileage) index of about 0.25. And turn on the lights during the day traveling to Europe and the implementation of legislation, but also to enhance the value of the expansion to 0.5 mpg. Ling Chi models manager pointed out that application of LED lamps on the vehicle fuel economy improvement will be a great contribution.
However,high intensity LED lights also emit more heat, while compact layut of the lamp also makes the heat emitting size increasingly small. In fact, the low-power LED device of a semiconductor category, its heat is much less than halogen or HID lamps, but most of the latter’s heat is generated outside of the lamp unit, though LED has low power consumption, less heat, its heat need to cover to the tiny silicon chip and then conduction. From:LED christmas lights
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