A vacuum cleaner main body includes a main body case, a camera provided in the main body case and that can perform imaging at a given angle of view, a driving wheel that allows the main body case to travel, and a controller. The controller includes at least a traveling mode and an imaging mode. In the traveling mode, the controller controls the drive of the driving wheel to allow the main body case to travel autonomously. In the imaging mode, the controller controls the main body case to autonomously travel to a given imaging position so that the camera sequentially images still images in a plurality of adjacent directions at an angle equal to or smaller than the angle of view. The vacuum cleaner main body can securely image, with the camera, a wide range without any blind spots.