There is disclosed a showcase provided with a light device capable of simplifying a maintenance operation and improving a cooling efficiency in a display 5 chamber. In the showcase (1), a display chamber (11) is formed in an insulating wall (2) to display commodities on shelf plates (32) of a plurality of steps of shelves disposed in the display chamber (11) and cool the commodities, the showcase includes LED lights (40) which illuminate the inside of the display chamber (11) from the upside, and the shelf plates (32) and the like constituting the shelves are constituted of a transparent 1o material.
