LED automotive lighting and other issues of broad prospects still restrict its promotion

With the advantages of LED light car

Since the cost to encounter a variety of obstacles and layers of technical difficulties, why suppliers and vehicle manufacturers lighting system will still insist Aoyama do not relax efforts to promote LED launched into the city?

The reason for this: the new light source can make the style of the design and configuration of vehicle lamp with unprecedented flexibility and is suitable for the model of personalized, light output power density and LED has been able to match the HID lamp, so it is very promising to other existing lighting technology were eliminated and the lights dominate the market.

According to the Cadillac EscaladePlatinum product manager said, light chromatography of LED is close to the sun, which makes it the light emitted by the object (such as signage / road traffic line) the effectiveness of reflection is higher than other light source, which can make the driver at a distance as soon as possible and improve traffic safety. He pointed out that the road signs are almost passive reflection of the use of light, because the color of LED is close to daylight, so that the driver can easily find and see the traffic signs in the night as day.

LED light color temperature is 5500-6000K, compared with other light color white, because the blue color temperature HID lamp is 4000K, halogen light yellow 3000K. So in the design of optical HID lamps, the blue part of the spectrum of most goes to the edge of the spot shot point, because these areas are the drivers eyes usually pay no attention to the place, so as to reduce the color of eye discomfort interference.

But for the oncoming car driver, still in the area when the vehicle over the marginal blue light will cause the other dazzle and influence the security of meeting. In the anti glare interference, LED headlamps have potential advantages: not only can protect the driver's visual comfort, will not cause the adjacent car / driver for car. Because TOYOTA Lexus headlight near remote light using different light sources (LED/, LS600h, halogen lamps) so the owners may be troubled by a significant difference of different light sources.

For AL (automotive lighting) another LED headlamp big advantage is that the EU has passed and will take effect on 2012 DRL (day light) regulations, and the provisions recommended type of Canada (with the DRL as the day allowed) different EU regulations are mandatory in the daytime headlight. As long as the vehicle is in motion, it is necessary to open the headlight, making the LED light source of low energy consumption, long life advantage is more obvious.

According to Valeo CEO, another has not yet fulfilled potential: LED lamp can use light array combination headlamp active function without using any (the device for moving parts). Such active lighting systems (for example, with the steering angle of the light to change the active security function), it may be necessary to use more than the number of light pipe used in the past to form a lattice. Valeo is working on this idea to develop a more reliable new adaptive headlight system.

Hella Fischer pointed out that this change is consistent with the lighting system and reflects the function of modern automobile mechanical device is gradually (E + + electronic electric) big trend Denso system replaced. The same set of LED arrays can be used as the source of the headlight, and can also be used to turn the lights, but in the use of different lighting function to use their own optical mask.

As a general steering lamp, only the LED array on both sides of the body, coupled with a simple switch function. If you want to play the active role of intelligent security headlamp, headlight beam steering can make tracks with vehicle and simultaneously always light in front of the road, you need more light dot matrix arrangement and take the spot control more complex, in accordance with the steering input to control Shading Group variable light spot array and its mirror, and synchronization change the headlight beam at.

The Audi R8 is the main feature of all automotive LED lights, and the LED used in automotive lighting is provided by Lumileds and Osram. Cadillac EscaladePlatinum platinum SUV, is the first use of LED headlamp suv. Auto LED lamp after verification technology in recent years, the concept car exhibition finally ushered in the development stage, is expected to be applied to the production car market prospects, the landmark event three: TOYOTA's Lexus LS600h is the world's first listed car used car LED lights, but it is only in the application. LED is a halogen lamp light source is still remote.

The milepost type event means LED headlamps will immediately become a master vehicle source in the field of technology innovation? According to experts predict: perhaps not. Because even the cost of LED according to the rate predicted by Moore's law continued to decline, it is lower to HID (high intensity discharge) the same price match also are years of xenon lamp; and the LED family to cost down to be able to be roughly the same with the halogen lamp, need time course after a period of prolonged.

According to HELla (Hella) CEO Fischer LED said the vehicle currently accounts for only a small share of the scale of the source market of a few percent, so to mass models (Malibu models such as Chevrolet models such as GM/ Department) the matching supply of great interest. But LED wants to reach the bulk of the supply to Malibu models, still need to overcome a series of technical and cost problems, at least ten years to go.

Visteon pointed out that the pace of LED market is indeed slower than expected, we predicted in 2004: