A camp bed, or cot in North America, is a small portable, lightweight bed

Bed

A bed is a large piece of furniture used as a place to sleep, relax, or engage in sexual relations.Most modern beds consist of a mattress on a bed frame, with the mattress resting either on a solid base, often wooden slats, or a sprung base...

used in situations where larger permanent beds cannot be used. Camp beds are generally used by armies or government organizations.

Camp beds generally consist of a foldable lightweight wood or metal frame, covered with canvas, linen or nylon.