Loxodrome lamp

A loxodrome is a line on a sphere.
For example a meridian on a globe.
But it could be any path that follows surface.
There are more loxodrome designs here and that inspired me to fire up my openscad and make a design myself for our staircase.
A standard bulb holder for E27 socket + lamps should fit on these designs.
Enjoy ;)

I also included the openScad files here if you want to play with them.