Abstract: A panel includes a coloring layer having light transmission characteristics relative to light from a light source, a first concealment layer provided on a rear surface side of the coloring layer, having light concealment characteristics relative to at least a part of light from the light source, and including an opening provided therein, and a second concealment layer provided on a rear surface side of the first concealment layer, having light concealment characteristics relative to at least a part of light from the light source, and including an opening provided therein in such a manner as to correspond to the opening in the first concealment layer, and the coloring layer is colored in a color different from those of the first concealment layer and the second concealment layer, the first concealment layer having a higher lightness than that of the second concealment layer.

Abstract: A mechanism for swinging a rectangular plate-like panel unit between a first state in which the panel unit is set with its longer sides parallel to a horizontal direction and a second state in which the panel unit is set with its shorter sides parallel to the horizontal direction. The mechanism includes a support unit swingably supporting the panel unit, a first connecting member coupling the panel unit and the support unit, and a second connecting member coupling the panel unit and the support unit. The first connecting member serves as a shaft around which the panel unit is swingable relative to the support unit. The mechanism further includes a first guide groove formed in the support unit to regulate movement of the first connecting member, and a second guide groove formed in the support unit to regulate movement of the second connecting member.