Import lights from .blender models

Hi everyone. I have modelled a trafficlight/semaphore using blender and I wonder the best way for simulating lights.
Import the model without lights and add them with unity,
Import the model with lights and attatch a script to the GameObject which selects lights objects and give them properties.

If you read this page carefully it states that:

Unity currently imports

  • All nodes with position, rotation and scale. Pivot points and Names are also imported.
  • Meshes with vertices,polygons, triangles, UVs, and normals.
  • Bones
  • Skinned Meshes
  • Animations

So you can not import lights from Blender to Unity or even if there is light information in the object Unity will not process it. There is actually a good reason for that since Unity has its own lighting system which is made with game performance in mind whereas Blender lights are made for aesthetics.

In Short: Use Unity lights!