A wiper with a light emitter formed by providing a light emitting function to a wiper for wiping off a wiped surface, the wiper including a linear light emitting part visible from the outside disposed on the outside of a wiper blade or a wiper arm for wiping operation and a light shielding device provided on the wiper along the light emitting part so that a person positioned on the inside of the wiped surface is not obstructed visually by the light beam emitted from the light emitting part.