What do you call those tall advertising towers/poles used by fastfood restaurants and the like?

Smirnoffsky: What do you call those tall advertising towers/poles used by fastfood restaurants and the like?
Like the one Mcdonald’s uses.. the one with a really high flag pole kinda tower with a big M sign? Or the ones you see in retail strips and malls with a steel tower looking frame with signboards/signages of establishments? Sorta like a slim billboard tower. What’s the more correct term for structures like those I mentioned? Thanks!

Answers and Views:

Answer by bobbyj
Sign Boards.

Answer by Mudassar
the one with a really high flag pole kinda tower with a big M sign? Or the ones you see in retail strips and malls with a steel more detail
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Answer by stacks
I think you a talking about different variations of structurally secure pylon signs.