48" LED light with lightbox frame adapters
grabcad
Working from a Harbor Freight Braun 59506 LED shoplight, a 1/2" PVC frame was attached with a handful of 3D-printed braces and adapters. Dimensions were set for a 5'x3' vinyl banner held on with ball-type canopy bungees. Aluminized bubble-wrap sheet insulation was used to make the reflective box, though a hacked-up bedsheet or cardboard would likely work as well (depends on how much "spill" light you can tolerate.) Ran well from a 12V7 UPS battery connected to a HF 450W inverter.
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