By 2016, I specialize in road lighting research, really 10 years. It takes a long time to think about a problem in 10 years, but it really takes 10 years to really think clearly. Let's take a look at what we have learned over the past 10 years and what results have been found about road lighting.
LED low-level lighting system technology and samples
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At present, our road lighting is usually a 20-meter light pole, which is the distance, 10 to 12 meters high, and the power is about 150 watts. This is LED. If it is a high-pressure sodium lamp, it is about 250 watts.
What is the problem with such lighting?
The first problem is invalid lighting. For the driver, the focus is on the road surface, and the more attention is paid to it. But now the way of lighting is just the opposite. The more we go up, the brighter we are. The more we go to the ground, the darker it is. There is no way.
The second problem is that not only is the up and down unreasonable, but the area it illuminates is not reasonable enough. The reason for saying that the area is unreasonable is that some of our areas, especially for highways, are fast roads that do not require illumination, but we have also illuminated, such as the blue areas in this picture.
This creates two problems. One is that the T-gradient distribution of its illumination is unreasonable; the second one is because we have a lot of large areas that are not needed, so the invalid illumination area is also large.
In addition, we have also found a problem. In the current traditional lighting, we have a lot of so-called glare. How does this glare appear?
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