LED Floodlight

Overview

The LED floodlight is a wide-beam outdoor luminaire for area, facade, and security lighting. A 100 W LED engine delivers a 120-degree flood pattern at around 130 lumens per watt, sealed to IP65 so it survives rain and wash-down. An integral passive-infrared sensor switches the fixture on detected motion and times it back off, and a potted constant-current driver with surge protection runs the LEDs from any mains supply between 100 and 277 volts.

Construction

Everything hangs on the Housing Assembly, a front-open ADC12 aluminium die-casting whose finned rear acts as the heat sink. A stamped U-bracket carries the body and a tilt-lock bolt sets the aiming angle. Inside, the LED Light Engine reflow-solders a high-power COB package and a surround of mid-power SMD LEDs to a metal-core PCB; a silicone gap pad presses the board against the casting so junction heat conducts straight into the fins.

The Optics Assembly shapes and seals the output: a vacuum-aluminised reflector collimates the flood beam, a tempered-glass window protects the cavity, and a silicone perimeter gasket maintains the seal. Power conditioning lives in the LED Driver, an isolated AC-DC constant-current stage resin-potted in a steel can, fronted by a bridge rectifier and an MOV/GDT surge stage.

The PIR Motion Sensor reads occupancy through a faceted Fresnel dome focusing infrared zones onto a dual-element pyroelectric detector. Mains enters through the Cable Entry Assembly, whose compression gland grips the supply lead and holds the IP65 rating at the cable penetration.