Best Light Source for Solar Street Lighting

Solar energy is a kind of green and clean energy that is very popular now, and it is widely used in our lives. Common solar products include solar water heaters, solar street lights and so on. Compared with traditional street lamps, outdoor solar street lamps are not only simple to install, have a long service life, but also have much higher power supply efficiency. They are also energy-saving and environmentally friendly. It can save the government a huge amount of electricity bills every year. In short, outdoor solar street lamps can meet people's needs in all aspects, and traditional street lights in many places are gradually being replaced by solar street lights. The most important part of outdoor solar street lamp is the light source. Common light sources include high-pressure sodium lamps, energy-saving lamps, induction lamps, and LED light sources.

The high-pressure sodium lamp is a DC 24V (12V) input to the electronic ballast, and the output low frequency (or high frequency) is supplied to the bulb. As the electronic ballast is used, it is very beneficial to the service life of the bulb and can increase the life of the bulb by more than 30%. Energy-saving lamps have low power and high luminous efficiency. The service life is about 2000 hours, and the low-voltage lamp tube turns black, which is more suitable for solar garden lights and solar lawn lights. The induction lamp has low power and high luminous efficiency. In terms of luminous efficiency, these lamps can reach above 80lm/w, which can be said to be comparable. In terms of service life, the service life of the LED light source is the longest among these street lights. In terms of environmental protection, the LED light source does not contain toxic substances, and there is no ultraviolet radiation, and the pollution is the least. LED is a low-voltage power supply, easy to match the power supply of solar power. Other lamp types require a larger boost range, power conversion loss is large, and electromagnetic interference is also large. In terms of price, LED lamps are the most expensive and sodium lamps are the cheapest. The LED light source is the highest quality among these kinds of light sources, and we usually recommend customers to choose the LED light source.

So after choosing LED as the light source of outdoor solar street lamp, how should we choose the LED light source that suits our lighting needs?

First, we need to determine the power source of the LED light source. There are usually two types of power supplies for outdoor solar street lamps, one is a constant voltage power supply and the other is a constant current power supply. The current of the constant current power supply is constant, and the output DC voltage will change with the change of the load resistance. When in use, you need to pay attention to the maximum voltage and current that the street lamp can withstand. The voltage of the constant voltage power supply is stable, and suitable resistance should be added when using it.

Second, we need to determine the brightness of the street lamp head. The street lamp installation place is different, the lamp pole height is different, the power of the solar street light source is also different. Because the higher the street lamp, the wider its illumination range, and the displayed illuminance will be lower than that of the lower street lamp. Therefore, the height of the street lamp must be considered when selecting the light source. The power of the street lamp is not as large as possible, as long as it can meet the lighting needs. High-power light sources also have higher performance requirements for batteries and solar panels. Because solar street light is a lighting system composed of multiple accessories, different accessories need to be adapted to each other. Generally, 20W LED light source is recommended for light poles of 3-4 meters, and 30-50W light source for light poles of 5-7 meters. If you don't know how bright the light sources of different wattages are, you can order a sample for trial. The basic output power of led solar street lights is from 30W to 60W, and 60W can already meet the requirements of lighting fixtures in most areas.

Of course, it is not enough to only consider the power. Another important parameter is the luminous flux. That is, the total amount of visible light emitted by the light source per second. In a fixed space, the more sufficient the luminous flux, the brighter our visual perception of the surrounding environment. A light source with a lower power can be selected within the same luminous flux range according to specific conditions, which is more energy-saving and environmentally friendly.

Fourth, determine the color temperature of the all in one integrated solar street light source. When choosing a suitable solar LED street light, the color temperature is also an important consideration. From the color temperature, the lamp holders of street lamps can be roughly divided into three types: white light, neutral light and warm light. Different categories have different lighting effects and give people different feelings. The solar street light source must be coordinated with the environmental conditions. First of all, it must be able to make people see the road conditions clearly without making people feel dazzling or dim. This is more important. If the head of the outdoor solar street lamp is uncomfortable to the eyes, it is easy for the driving driver to fatigue driving. White light or warm white light up to 3000K is more suitable for street lighting.