SENSOR CLEANING DEVICE

A sensor cleaning device includes: a spray nozzle configured to spray washing water and air to a sensor; a first flow path having a venturi section that exerts a venturi effect in a midstream thereof and configured to guide air from an air supply source to the spray nozzle; a second flow path configured to provide fluid communication between a washing water supply source and the venturi section such that washing water is suctioned into the venturi section by the venturi effect and combines the washing water from the washing water supply source with a flow of air guided to the spray nozzle; a third flow path configured to communicate with the first flow path to bypass the venturi section; and a valve device configured to control a flow of fluid flowing along the first, second, and third flow paths to a blocking mode, a washing water supply mode, and an air supply mode.