The major role of graphic design is to communicate something to people, and product design is to be used by people. Also, graphic is dealt in a limited plane, in an imaginary or unreal world. On the other hand, product is a solid object in a real world. While such differences cross over with one another, respective results are achieved; I feel the challenge and the fun in such design process. I have given Hitotaba lamp a functional role of product, as well as a role of planar composition and communication of graphic.