Solar Power Street Lamp Light Source Overview

More and more solar power street lamps appear in people's field of vision. They use solar cells to convert sunlight into electricity and provide the electricity to light sources. In the past, people used to worry about the lighting effect of the new type lighting product. Now, the solar power street lamps are able to provide high efficient and stable lighting. This is related to the light source technology development. The light source directly affects the illumination effect of the streetlights. 

Now there are fewer light sources dedicated to solar led street lamps. In order to reduce energy loss, street lights try to choose DC light sources as much as possible. Common light sources now include DC energy-saving lamps, high-frequency induction lamps, low-pressure sodium lamps and LED light sources.

• The theoretical luminous efficiency of energy-saving lamps is lower than that of sodium lamps, but the color rendering is good, almost close to incandescent lamps. The most important thing is its low cost.

• Induction lamp is one of the commonly used light sources of solar street lamps, with high luminous efficiency, high color rendering and long life, but the cost is relatively high.

• LED light source is the latest light source technology, low voltage work, can be better adapted to solar batteries. The color rendering is very good and the service life is very long. But there are requirements for the temperature of the working environment, which is not suitable for ultra-high temperature or ultra-low temperature. The normal working temperature is -20℃-60℃. The price of LED light source is the highest among these kinds of light sources, but its cost performance is also the highest.

• Low-pressure sodium light has high efficiency, compared with other light sources, power consumption is very low, and energy saving can reach more than 50%. But the color rendering is relatively poor.

The above-mentioned light sources have their own advantages and disadvantages. Customers can choose the right light source according to their needs and budget. In addition, the choice of street light source can also be selected according to the specific local installation environment whether it is warm white light, cold white light or yellow light. Different color temperatures give people different feelings. Cold light and warm light are defined based on color temperature. When the color temperature exceeds 5000K, the color is blue, giving people a cool feeling, called cold light; when the color temperature is below 3000K, the light color is reddish, giving people a warm feeling called warm light. Light with low color temperature tends to be yellowish, such as incandescent lamps, around 2800K. The light with high color temperature is bluish, such as purple light, above 9000K. It is generally believed that the color temperature of standard white light is 6500K.

At the same time, the power of the light source is also a particularly important factor. The power of the solar power street lamp source directly affects the use effect and brightness of the whole set of street lights. The power of solar power street lamps is generally customized according to the needs of customers. Customers are required to provide detailed information such as the lighting hours, the height of the poles, the distance between the street lights, the width of the road surface, the lighting conditions of the installation location, and so on. The power of the LED light source is directly proportional to the capacity of the solar panel and battery. The greater the power of the LED light source, the greater the capacity of the battery panel and the storage battery, and the higher the price of the street lamp. If the customer has a high demand for brightness, then the size of the LED solar power street lamp source should be larger, and some solar power street lamp manufacturers will consider yourself out of your own consideration. If the customer has a high demand for brightness, the power of the lamp holder can also be appropriately increased.