How to choose the power of solar light street light

Recently, many customers ask how to choose the configuration of solar light street light, such as whether the brightness of 30W solar light street light can meet the needs of road lighting. Today I will give you a brief introduction on how to choose the power of solar light street light:

1. Light pole height:

The greater the wattage of the light source, the height of the light pole can be increased accordingly, but the customers have to consider a problem. When the light pole is too high, the lighting angle of light source will be affected, that is, the higher the brightness of the light source will be lower. Secondly, the battery panels of solar light street light are easily blocked by trees on the roadside, resulting in insufficient power generation and causing problems with solar street lights feeding. Therefore, the selection of the height of the pole of the solar street light also needs to be based on the actual conditions of the installation site, whether there are shadowing problems such as trees and buildings.

2. LED light source

The power of solar light street light ranges from tens of watts to hundreds of watts. Customers should choose solar light street light with appropriate power according to their actual employment needs. If the lighting requirements are relatively high, choose high-power lights; otherwise, choose low-power . For example, if a rural road is six meters wide and solar light street light are installed on one side, you can choose 6 meters high 30W solar street lights, which can fully meet the lighting needs.

Here are a few points need to be noted when purchasing:

• Luminous efficiency   technology is becoming more mature, and high-power LED light sources can already meet the needs of general street lights. The luminous efficiency of the general high-pressure sodium lamp is 100LM/W, the commonly used high-power LED is 50-60LM/W, and it can reach 80LM/W with foreign LED chips. The higher the luminous efficiency, the better the energy-saving effect, which is also one of the most important indicators for choosing LED street lights. However, there is no clear stipulation in the LED standard, so you must carefully confirm when purchasing LED street lights.
• Light decay: In order to reduce costs in production, some businesses use hundreds of low-power LEDs of 0.5W. However, the light decay of this low-power LED is very serious. When the light decays to 80%, the life span is only 1000 hours. Therefore, as a street lamp that needs to be used for a long time, it is absolutely not allowed to use such low-power LEDs. If you choose high-power LEDs (generally more than 30W), the light decay will be much better. When we buy, we need to confirm with the supplier about the power of the LED lamp beads, and it is best to have a formal specification for confirmation.
• Self-respect problem : Due to the high technical content and complex composition of LED street lamps, the weight of some high-power lamp holders will far exceed that of ordinary high-pressure sodium lamps, so the requirements for corresponding supporting materials are higher. However, some LED street lamp manufacturers have tried their best to reduce the self-weight of the LED lamp holder, from about 30 kg per lamp holder to more than 10 kg, and the weight reduction has a further downward trend. Despite this trend, it is still necessary to ask about the weight of the lamp, which can save transportation costs and determine whether the existing support materials are effective.
• Heat dissipation, Because the LED is a semiconductor component, when its wafer is affected by temperature and reduces to 30% of the initial luminous flux, it will lose the meaning of illumination, and its life will end. In theory, the lifespan of high-power LED street lights is 30,000 to 50,000 hours, but the important prerequisite is good heat dissipation. This requires the lamps and lanterns to have good heat dissipation function, which is a question that we need to care about when purchasing. It is worth mentioning that our factory adopts different technologies such as advanced needle heat dissipation. It can ensure that the lamp has a good use effect and a long life.

BBier is a professional solar light street light supplier & manufacturer in Shenzhen China.We have focused on energy saving and environment protection for more than 10 years. Our products passed ETL&DLC&CE&ROHS certifications.

We also have such experience of help governments to solve solar light street light problems. In our factory, we can help you make an sample for test first. And we can also make customization based on your requirements.