A hub comprises a main body with a speaker; a communication module included in the main body; a window formed of a transparent material; a display panel for displaying a screen based on information exchanged via the communication module; and a cover housing coupled to a top of the main body and having a display panel and an opening at an upper surface thereof. The window is provided on an upper surface of the display panel, wherein a normal vector with respect to a predetermined plane in which the opening falls is at an acute angle relative to a horizontal plane, and a vector acquired by orthogonally projecting the normal vector with respect to the horizontal plane faces forward. A portion of the inner surface of the cover housing is parallel with the normal vector, and the window is provided so that an upper surface faces the direction of the normal vector.