A lighting device, comprising: a storage member provided with a receiving opening for an object to be stored, and a support bottom portion for supporting the received object to be stored, said storage member comprising a space on one side and a space (S') on another side sandwiching a position approximately in a middle in a length direction of the storage member, said spaces (S, S') communicating at a position approximately in the middle in the length direction; a light source; a loop-shaped light guide member comprising an inner peripheral portion, an outer peripheral portion, an incident portion for a light from the light source and a light emission surface formed on the inner peripheral portion along an edge of the receiving opening, the incident portion being positioned at the outer peripheral portion side of the light guide member; wherein an outline shape in a plan view of the inner peripheral portion of the light guide member has a shape following an arc of an imaginary circle respectively on the one side and on the other side sandwiching a position approximately in the middle in the length direction thereof, said lighting device being characterized in that the storage member comprises a shielding wall along the receiving opening that is positioned between the outer peripheral portion and the inner peripheral portion, and the light guide member includes a gradually-reduced portion wherein a width between the inner peripheral portion and the outer peripheral portion of the light guide member in the plan view becomes narrower as coming from the incident portion close to the position approximately in the middle in the length direction and opposite to the incident portion. a storage member provided with a receiving opening for an object to be stored, and a support bottom portion for supporting the received object to be stored, said storage member comprising a space on one side and a space (S') on another side sandwiching a position approximately in a middle in a length direction of the storage member, said spaces (S, S') communicating at a position approximately in the middle in the length direction; a light source; a loop-shaped light guide member comprising an inner peripheral portion, an outer peripheral portion, an incident portion for a light from the light source and a light emission surface formed on the inner peripheral portion along an edge of the receiving opening, the incident portion being positioned at the outer peripheral portion side of the light guide member; wherein an outline shape in a plan view of the inner peripheral portion of the light guide member has a shape following an arc of an imaginary circle respectively on the one side and on the other side sandwiching a position approximately in the middle in the length direction thereof, said lighting device being characterized in that the storage member comprises a shielding wall along the receiving opening that is positioned between the outer peripheral portion and the inner peripheral portion, and the light guide member includes a gradually-reduced portion wherein a width between the inner peripheral portion and the outer peripheral portion of the light guide member in the plan view becomes narrower as coming from the incident portion close to the position approximately in the middle in the length direction and opposite to the incident portion.