LED Street Lighting

LED (Light-Emitting Diodes) technology represents the new frontier of lighting compared to traditional lighting which is destined to be abandoned in the near future.

It is an electronic component that emits infrared and ultraviolet-free light upon contact with electricity. Its main characteristics are: energy saving, luminous efficiency, durability and sustainability.

Energy savings are estimated at 50% to 70% compared to traditional systems.

Sodium lamps, being omnidirectional, spread the light in all directions and it is necessary to equip the street lamp with a parabola to recover half of it: the final luminous efficiency is 50% of that emitted.

The LED is directional and emits a 90° light beam and therefore reduces pollution to a minimum and has a high luminous efficiency. 
The useful life of LED systems is estimated at 50,000-100,000 hours (10-20 years, 12 hours a day) compared to 4000-5000 hours (11-14 months) of high pressure sodium lamps.

According to estimates, after 50,000-100,000 hours the brightness of LED systems drops to 70% compared to the initial value and this can be considered the end of the useful life of the LED.

The fall rate of the luminous flux of the LEDs is zero after 3000 hours of operation, indeed in the first 5000 hours it increases slightly.
Sodium lamps, on the other hand, after 3000 hours present a reduction in flux of up to 40%.

The maintenance costs of LED lighting systems are estimated to be in the order of one tenth compared to sodium systems currently in use.