Help with Maxis-Style Neon Lights

Hello! I am new to blender and having trouble identifying some aspects of maxis neon light's meshes. I want to create a neon sign with a metal frame backing, like the 'We're "Open" Neon Sign.' I have made a neon sign before, using this tutorial: However, It seems to be using a completely different method. Can anyone give advice on how to make neon like Maxis does? Particularly, what are the features and names of the components that make up the lights.