To make it possible to perform air purification by a photocatalytic function while moving, and to perform air purification of a wide range.SOLUTION: A mobile body comprises: a housing which is constituted of a material at least outer surface sides of which exert a photocatalytic function； housing moving means which is attached to the housing and used for spatially moving the housing； light emission parts which are provided so as to irradiate the outer surface of the housing with light； and a control part which is provided inside the housing, controls supply of driving voltage to the light emission parts, and controls drive of the housing moving means. The control part includes a function of supplying driving voltage to the light emission parts to irradiate the outer surface of the housing with light and execute a photocatalytic function while moving the housing by the housing moving means.SELECTED DRAWING: Figure 1【課題】移動しながら光触媒機能により大気浄化を行うことができ、広い範囲の大気浄化を行うことができる。【解決手段】少なくとも外表面側が光触媒機能を奏する材料により構成された筐体と、この筐体に対して取り付けられ、筐体を空間移動させるための筐体移動手段と、筐体の外表面に対して光を照射するように設けられる発光部と、筐体内に設けられ、発光部に対する駆動電圧の供給を制御すると共に、筐体移動手段の駆動を制御する制御部とを備える。制御部は、発光部に駆動電圧を供給して、筐体の外表面に光を照射して光触媒機能を実行させながら、筐体移動手段により筐体を移動させるようにする機能を備える。【選択図】図１
