Display apparatus comprising a display screen for the display of an image to be viewed by a user. The solar cell has a transparent electrode film, a p-type conductive film, an n-type conductive film and a transparent electrode film stacked in this order from the bottom. At least a portion of the terminals of the first connector interface are electrically coupled to associated ones of the terminals of the second connector interface via a multi-level arrangement. The reinforcement assembly may be attached to the spacer fitting at an insulator aperture for supporting a strand of insulators andor transmission lines.