In brief: 100 W LED · powered by an electric scooter/bike battery · cooled by two server blowers · chest or mount attachment · battery-voltage display · 3D-printed enclosure
I needed a big portable floodlight: able to throw a lot of light, for hours, with no mains outlet. Wearable on the chest like a GoPro to walk with, or clampable around a pole.
A 100 W LED gets extremely hot. Without serious thermal management, it loses efficiency, overheats and burns out fast. I integrated two server blowers, capable of generating a strong airflow in a compact form — cooling was the central part of the project.
The floodlight is powered by an electric scooter or bike battery, which gives excellent runtime. The mounting allows several uses: worn on the chest, mounted on a support, or fitted onto a pole. A display shows the battery voltage, the temperature and the fan percentage.
A portable, powerful light source for environments with no infrastructure, keeping the LED within an acceptable thermal range during extended use.