LED Street Light

Overview

The LED street light is a roadway luminaire mounted on a pole arm to light streets, highways, and car parks. A 120 W LED engine with a distributing street optic spreads light along the carriageway at around 140 lumens per watt, sealed to IP66 for decades of outdoor service. A NEMA control node and photocell handle dusk-to-dawn switching and networked dimming, while a surge device protects the electronics from line transients and lightning.

Construction

The fixture is built on the Housing Assembly, a finned die-cast aluminium body with a pole mounting arm, clamp, tilt adjuster, and perimeter seal. Inside, the LED Light Engine arrays four MCPCB LED modules behind a PMMA PMMA Lens Array that shapes the Type II/III/V street distribution, with thermal pads conducting heat into the housing.

The optical chamber is sealed by the Glass Cover Assembly, a tempered low-iron glass pane clamped over a silicone gasket by a stainless frame. Power conditioning is the LED Driver, an isolated constant-current converter with mains rectification and PFC, an isolation transformer, bulk capacitors, surge protection, and a potted case.

Control rides on top: the Smart Control Node is a NEMA twist-lock node with a sub-GHz mesh radio and MCU for remote dimming and monitoring, working with the Photocell Sensor dusk-to-dawn sensor. A separate Surge Protection Device surge protection device with high-energy varistors clamps mains transients ahead of the driver.