Solar energy is a type of renewable and pure energy that is currently very well-liked and is used extensively in our daily lives. Solar street lamps, solar water warmers, and other similar items are typical solar goods. Outdoor solar street lights are not only easy to place and have a long lifespan compared to conventional street lamps, but they also have a much better power source efficacy. Additionally, they are ecologically beneficial and energy-efficient. It can help the government cut its annual energy costs by a sizable sum. In summary, solar street lights are progressively replacing conventional street lights in many locations because they can satisfy people's requirements in every way. The illumination source is the most crucial component of external photovoltaic street lighting. High-pressure sodium lights, energy-efficient lamps, induction lamps, and LED light sources are examples of typical lighting fixtures.
The electrical ballast receives a DC 24V (12V) input from the high-pressure sodium lighting and supplies the output low frequency (or high frequency) to the lightbulb. When an electrical battery is used, the bulb's lifespan can be extended by more than 30%, which is very advantageous. Energy-saving lights are highly illuminating and efficient while using little electricity. The low-voltage bulb tube has a service life of about 2000 hours before going dark, making it more appropriate for solar yard lights and solar grass lights. The induction light is highly illuminating and efficient while using little electricity. These lights can achieve above 80lm/w in terms of lighting efficacy, which is similar. The LED light source has the greatest lifespan of all of these public lamps in terms of utility life. The LED light source is the least polluting in terms of pollution and does not contain any harmful materials or UV rays. Low-voltage LED power supplies are simple to combine with photovoltaic power supplies. Other light varieties need a wider increase range, have high power transfer losses, and have high levels of electromagnetic radiation. LED lights are the most costly and gas lights are the least expensive in terms of cost. Since the LED light source is the best among these varieties of light sources, we frequently advise clients to select it.
How should we choose the LED light source that best fits our illumination requirements after selecting LED for the external photovoltaic street lamp?
We must first ascertain the LED light source's electricity supply. For exterior solar street lights, there are typically two different kinds of power supplies: one is a constant voltage power supply, and the other is a constant current power supply. The output DC voltage of a continuous current power source changes as the load impedance varies, while the current is always steady. The highest power and amperage that the street light can sustain must be considered when using. When using the continuous voltage power source, appropriate impedance should be added because the voltage is steady.
Second, we must ascertain the street lamp's luminosity. The location where street lamps are installed, the height of the lighting poles, and the strength of the photovoltaic street light source are all distinct. Due to the fact that a taller street light has a broader luminosity range and lesser visible illuminance than a lower street lamp. As a result, when choosing the light source, the public lamp's height must be taken into account. As long as it can satisfy the demand for illumination, the public lamp's strength is not as great as it could be. Higher performance standards for batteries and photovoltaic cells are also necessary for high-power illumination sources. The various accessories that make up a solar street light must be adjusted to one another because it is an illumination system made up of many different accessories. For light poles of 3–4 meters, a 20W LED light source is typically advised, and for poles of 5-7 meters, a 30–50W light source. If you're unsure of the brightness of various power light sources, you can purchase a sample to try out. Led solar street lights have a base output power range of 30 to 60 watts, and 60 watts is already enough to power most lighting devices.
Of course, focusing solely on strength is insufficient. The light flow is another crucial factor. Specifically, it refers to the entire volume of visible light that the light source emits each second. The more adequate the light flow is in a confined area, the brighter the world appears to be to our eyes. According to particular circumstances, a light source with a lesser wattage can be chosen within the same bright emission range, which is more energy-efficient and ecologically beneficial.
Fourth, ascertain the color tone of the combined photovoltaic street light source that is all-encompassing. The hue tone should be taken into account when selecting a photovoltaic LED street light. The bulb carriers of public lights can be loosely categorized into three kinds based on color temperature: white light, normal light, and mild light. Various groups have various illumination effects and elicit various emotions in people. The weather factors and the photovoltaic street light supply must be organized. It must be able to make people see the state of the roads plainly without making them feel blinding or dull, first and foremost. This has more significance. Driving tiredness is simple to develop if the external solar street lamp's head is unpleasant for the eyes. For public illumination, white or bright white light up to 3000K is preferable.

| Power | 100W |
| Luminous flux | 10000LM |
| Polycrystalline | 6V |
| solar panel | 25W |
| Lithium battery | 3.2V 25000mA |
| Charge Time | 5-7H |
| Lighting Time | 10-12H |
| Solar Panel Size(MM) | 530*350*17 |
| Lighting area | 100m2 |
| Installation height | 5M-7M |
| Installation distance | 18M-24M |
| Light efficiency | 120LM/W |
| Light source | SMD5730 |
| Material | High-quality die-casting aluminum alloy |
