Solar Street Light Manufacturer

Office: +8613256984568

How do solar public lights work?

As you might imagine, the solar canopy lighting principle is the same as with any other system that involves solar panels.

The solar cells in the panel seize the energy from the sun during the day. That energy is converted into electricity and stored in the battery.

Once sunlight starts to fade and the solar panel voltage drops lower than 5 volts, LEDs progressively start to light on. They will remain on throughout the night, consuming the energy stored in the battery.

Why LEDs?
Well, LEDs have a few attributes that make them superior over common High-Pressure Sodium Lamps (HPSL).

The next day the cycle repeats.

LEDs consume much less energy than any other commercially available lighting technology. Typical source efficiency circles around 80 – 130 lumens/watt.

Also, they emit light directionally, i.e. over 180º, contrarily to common lamps which emit it at 360º.

LEDs kick out the need to redirect or reflect light, leading to far fewer losses than with conventional lamps.

This comparison is better explained by the illustration below.

Comparison between LEDs and other non-directed light lamp types
LEDs’ lifespan is also much larger than other lighting technology, which is one of the big myths about LED lighting.

You can easily bet on an LED lasting up to 60,000 hours. Some of them even go up to 100,000 hours or more.

They also offer very high light quality with very low maintenance costs and hassle.

The fact that LEDs are more efficient than traditional lamps, implies smaller solar panels size.

Sensors are included within the fixture to increase the whole system efficiency even further and decrease its energy consumption.

A light sensor system commands different radiance levels depending on the time and sunlight intensity.

The time control mode makes LEDs not to shine at 100% when the sun barely starts to go down. Instead, they are lit according to the available natural light and the light requirement.

For example, they start running at 50% “brightness” at dawn and work it up as time passes by. So, at 7:00 pm they might run at 70% and reach 100% at 8:00 or 9:00 pm.

Motion sensors detect movement near the street lighting pole, and this will make LEDs to shine at their 100% capacity. When no motion is detected, then a portion of the LEDs will go off.

Motion sensors allow having some light glowing even when no movement is detected, avoiding complete darkness.

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