T.V. Mount?

I am wanting to add a TV for outside viewing on our trailer by use of the storage compartment on our camper. The idea that I have is a mount that would fold and unfold, so to speak. I'm thinking of a mount that would allow the TV to fold flat up toward the floor of the camper when not in use but, be able to drop down or unfold the TV when it is time to watch it. Kind of hinge type mount. Has anyone ever seen this or know of such of a type of mount that would work?

Thanks in advance