The most suitable color range of LED lighting fixtures should be the most scientific choice for the color temperature range close to the natural white light of the sun; the natural white light with lower illumination intensity can achieve the unmatched illumination effect of other unnatural white light; the most economical pavement The brightness range should be within 2 cd/m2; improving the total uniformity of illumination and eliminating glare is the most effective way to save energy and reduce consumption.
In the era of incandescent lamps and high-pressure sodium lamps, there was no room for choice in the color temperature of lighting fixtures, and they had to accept and adapt silently. However, entering the era of LED lighting fixtures that can choose color temperature, what kind of LED lighting fixture color temperature is selected becomes a problem that needs to be clearly and clearly seen. This is a major event in the quality of joints and lighting, and we can't help but cope.
1. The recognition and response mechanism of human brain to things
The first reaction of the human brain to obtain images of external objects through the eyes is to identify the acquired images with the image information originally stored in the brain memory, and then immediately respond accordingly. If the acquired image information is closer to the original stored information, the faster the recognition, the more agile the response. If the driver is at a low color temperature light that is farther away from the natural light during the day, the more difficult it is to recognize the acquired image, the slower the recognition speed and the slower the response speed. The result of a slow response time of 0.1 seconds is enough to cause a sudden increase in the accident rate. In order to compensate for the defects caused by this diurnal color temperature difference illumination, the only way is to increase the illumination intensity to improve the recognition speed at low color temperature, which means increase energy consumption.
From the evolution of animals to humans in the long process of hundreds of thousands of years, human beings have always lived under the natural light of the sun, carrying out all production and social activities. The result of long natural selection and evolution makes the most suitable color temperature range for human eyes is the color temperature range of the natural white light of the sun (5500-7500K). In this color temperature range, the human eye has the strongest ability to recognize moving and still life bodies; in this color temperature range, human beings have the most responsiveness to external things. Because the image information of the objects stored in the brain memory information database is mostly formed under the illumination of natural white light. Therefore, the color temperature range of the most suitable LED lighting fixture should be close to the color temperature range of the natural white light of the sun, which is the most scientific choice.
2, Europeans like low color temperature biological, geographical reasons
Then, why do Europeans like low color temperature? This is due to its ethnic and geographical reasons. Europeans are white-skinned, and white light can make white-skinned people look pale. There are even exaggerated claims, like the color of the dead, so it is natural for them to prefer warm colors. But we are yellow people, the natural white light of the sun does not make us look pale. Also, most of Europe is located at high latitudes and low temperatures, which is also the geographical reason for their preference for warm colors. However, we are located in the temperate zone of four seasons, and there is no long cold winter. It is a bit of a big deal to follow the Europeans to choose too warm colors.
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