The file 'Ender 3 – 24V LED Light Bar V1.1 3D Printer Model' is (stl) file type, size is 52.0KB.
This is a simple/adjustable lightbar for the Ender 3, but should also fit for a CR-10 or any other printer with a 20x20mm aluminum profile.
Its made for a 24V-LED-Stripe (L-50mm x W-20mm x T-8mm), so you can plug it directly or with a switch, into the 24V PSU of a Ender 3, but you can use every LED-stripe you prefer.
This one should fit:
https://de.aliexpress.com/item/Double-row-SMD-5050-10-meters-120led-m-IP67-120-LED-strip-24V-10m-waterproof-Led/32702401771.html
To create the look on the last picture, i used (Cura):
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Update v1.1
Slightly dimension changes to fit better!
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LED_-_bar.stl | 6.3KB | |
LED_-_bar_with_logo.stl | 45.8KB | |
LED_-_binding.stl | 55.2KB | |
LED_-_girder.stl | 97.3KB |