The wide application of LED street lights provides a more reliable and efficient solution for urban road lighting. However, how to choose the color temperature of LED street lights to achieve the best visual comfort has always been a topic of great controversy and concern. This article will introduce the common color temperatures of LED street lights, the impact of different color temperatures on visual comfort, light pollution, and how to choose the appropriate color temperature of LED street lights

1.Common color temperatures of LED street lights

Common color temperatures of LED street lights usually include: 3000K, 4000K, 5000K, 6000K, etc. Among them, the 3000K LED bulb will emit a softer yellow light, giving people a warm and comfortable atmosphere; while the 6000K LED bulb will emit a very bright white light, but it may feel too dazzling. As the color temperature increases, the color of the light emitted by the LED bulb slowly changes from yellow to blue-white, which also shows that the intensity of the blue-white light wave is getting stronger and stronger.

2.The impact of different color temperatures on visual comfort

For the selection of LED street lights, color temperature has a very important impact on human visual comfort. In actual use, different color temperatures will have an impact on the human body.

Warm light: 2700-3300K
Warm light is similar in color to incandescent light, giving people a warm, healthy and comfortable feeling. It is used in families, residences, dormitories, hospitals, hotels and other places, or in places with relatively low temperatures.

Warm white light: 4200-4500K
Warm white light is soft and gives people a pleasant, comfortable and peaceful feeling. It is suitable for shops, hospitals, offices, hotels, restaurants, waiting rooms and other places.

Cold white light: 5500-7000K
The cold white light source is close to natural light, has a bright feeling, and makes people concentrate. It is suitable for offices, conference rooms, classrooms, drawing rooms, design rooms, library reading rooms, exhibition windows and other places or other places where it is important to clearly see details. area.

2.The impact of different color temperatures on visual comfort

For the selection of LED street lights, color temperature has a very important impact on human visual comfort. In actual use, different color temperatures will have an impact on the human body.

Warm light: 2700-3300K
Warm light is similar in color to incandescent light, giving people a warm, healthy and comfortable feeling. It is used in families, residences, dormitories, hospitals, hotels and other places, or in places with relatively low temperatures.

Warm white light: 4200-4500K
Warm white light is soft and gives people a pleasant, comfortable and peaceful feeling. It is suitable for shops, hospitals, offices, hotels, restaurants, waiting rooms and other places.

3.Light pollution and LED street lights

Light pollution is radiant light leaking into the air, environment or sky from tons of lighting. This radiation can have adverse effects on both people and animals. LED street lights may produce light pollution, especially those with color temperatures above 5000K. Therefore, in the selection of LED street lights, priority should be given to choosing a low color temperature to reduce the occurrence of light pollution.

4.How to choose the appropriate color temperature of LED street lights

According to the International Commission on Illumination (CIE), the average color rendering index (CRI) can measure the color reproduction of LEDs, which is also a way to verify the color temperature of LED street lights. Generally, LED lights with CRI greater than 80 have better visual effects. At the same time, LED street lights with a color temperature of 3000K are usually used in residential areas and public places, while LED street lights with a color temperature of 4000-5000K are suitable for some areas that do not require too much attention to light pollution. For large places such as industrial parks, it is recommended to choose LED street lights with a color temperature of 5000K or above.

5.New developments in LED street lights

In recent years, with the continuous advancement of technology, there are more and more types of LED street light products. Among them, the number of LED street lights that replace the traditional 400W is increasing, and they are used for public lighting in streets, squares, parking lots, etc. Now some companies are beginning to provide more user-friendly lighting solutions to meet the personalized needs of different groups of people for the color temperature of LED street lights.

The selection of LED street light color temperature has a very important impact on visual comfort. Reasonable selection of color temperature plays an important role in reducing light pollution, enhancing lighting effects, improving visual comfort and human health. Here we hope that practitioners in various fields can pay more attention to the selection of color temperature of LED street lights and create a more comfortable lighting environment for people.

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