Road light - street light

after searching, some model here without success, I have launched the adventure of my own lamp.
I have sought inspiration in the real model of the picture above.
then... I really do not know how to bend a tube in the program design. so the design is in a straight line. and then I gave way a little heat stroke and an improvised mold.

I think when they are painted will looks nice. I have placed a light and wiring inside. It is 6V although I want to work with 5v as it is filament and gives me