LED High Bay Light

Overview

The LED high bay is a round, UFO-style luminaire for high ceilings in warehouses, factories, and gymnasiums. At 150 watts it pushes roughly 21,000 lumens downward at about 140 lumens per watt, hung from a ceiling point on a hook. An integrated isolated driver and an optional occupancy/daylight sensor let it replace 400 W metal-halide fixtures while cutting energy and eliminating warm-up and re-strike delay.

Construction

The Finned Heat Sink Body is the structural backbone: a die-cast aluminium body with radial cooling fins, a cast hanging boss for the hook, and a thermal pad that couples the LED board to the metal. Mounted to it, the LED Board (MCPCB) is a round MCPCB carrying 120 mid-power white LED packages reflow-soldered for tight thermal contact, each a blue InGaN die under yellow phosphor.

Light shaping comes from the anodised Aluminium Reflector ring, which sets the flood pattern, while the PC Diffuser Cover seals and diffuses the output to IP65 through a frosted polycarbonate dome, gasket, and retaining ring. The LED Driver Module converts mains to the regulated string current; its sealed can holds a bridge rectifier, a ferrite flyback isolation transformer, bulk electrolytic capacitors, and a constant-current controller IC with PWM dimming.

The fixture hangs from the Mounting Bracket & Hook hook and safety chain, and an optional plug-in Motion/Daylight Sensor adds PIR occupancy and daylight control. A Surge Protector clamps line transients ahead of the driver to protect it from switching and lightning surges.