CASTER PROTECTION STRUCTURE, HOUSING STRUCTURE EQUIPPED WITH CASTER PROTECTION STRUCTURE, AND ARTICLE

A caster protection structure protects a caster provided at a base of a housing and used for transporting the housing in a movable manner, and includes a frame member that is provided at the base of the housing, serves as a part of a frame constituting the base of the housing, and extends in a predetermined direction. A longitudinal end position of the frame member is disposed in an outer region located beyond an outer lateral edge position of the caster.