On a related topic, I once saw a 65 Impala SS console that had molded venting in the top half to divert air to the rear.... No idea if it was an option or a custom built thing.
American Pontiacs (full and midsize) in the late 60s into the 70s didnt use a specific deflector for a console but all the 8 track cars had a deflector that avoided sending heat down the middle ( I guess to avoid overheating the 8 track motor or perhaps just to avoid blowing dust into it?)