Almost closed housing for lithophanes, in order to avoid undesirable direct visible LEDs. There are only ventilation slots at the back.
A DC connection on the back.
On the side an on/off switch.
The back wall is designed for 1cm wide LED strips.
The walls are glued to the floor, the lid is loose.
So the Lithophane can be replaced with another one at any time. Just slide it in.
The curvature makes it perfect for inserting a colored picture.

I got the electronic components out of the trash, so no order links.
With a colored lithophane, I recommend installing more LEDs than usual in order to achieve sufficient brightness. As shown in my pictures.

My photo was 2196x1692 pixels.
In order for the housing to fit, the ratio of width and height must be transferred to your own picture!

To create the picture I used the following website:
https://tool.itslitho.com/CreateModel
Shape: Arc
Height: 100mm
Widh: 123.9mm
Angle: 60 Deg
Min Thick 0.8mm
Max 3.2mm
Frame: Border
Thickness: 3mm