A cleaner for cleaning an object to be cleaned, the cleaner comprising: a generation unit configured to generate high-pressure air, a nozzle configured to inject the high-pressure air toward a cleaning surface of the object to be cleaned, and a control unit configured to control an injection of the high-pressure air, wherein even when foreign objects do not adhere to the cleaning surface, the control unit executes an operation mode in which the high-pressure air is generated and injected when a predetermined condition is satisfied, wherein the object to be cleaned comprises at least one of a vehicle lamp and an in-vehicle sensor mounted on a vehicle (V), and the predetermined condition comprises detection of a situation in which an outside air temperature of the vehicle (V) is equal to or lower than a predetermined temperature, characterized in that the operation mode comprises a normal operation mode in which the high-pressure air is normally injected, a first intermittent operation mode in which the high-pressure air is intermittently injected at a predetermined cycle, and a second intermittent operation mode in which the high-pressure air is injected at a cycle shorter than in the first intermittent operating mode, wherein, as the predetermined condition, when it is detected that the outside air temperature is higher than the predetermined temperature, the control unit executes the first intermittent operation mode when it is detected that a travelling speed of the vehicle (V) is equal to or lower than a predetermined speed, and the control unit executes the second intermittent operation mode when it is detected that the travelling speed is faster than the predetermined speed. a generation unit configured to generate high-pressure air, a nozzle configured to inject the high-pressure air toward a cleaning surface of the object to be cleaned, and a control unit configured to control an injection of the high-pressure air, wherein even when foreign objects do not adhere to the cleaning surface, the control unit executes an operation mode in which the high-pressure air is generated and injected when a predetermined condition is satisfied, wherein the object to be cleaned comprises at least one of a vehicle lamp and an in-vehicle sensor mounted on a vehicle (V), and the predetermined condition comprises detection of a situation in which an outside air temperature of the vehicle (V) is equal to or lower than a predetermined temperature, characterized in that the operation mode comprises a normal operation mode in which the high-pressure air is normally injected, a first intermittent operation mode in which the high-pressure air is intermittently injected at a predetermined cycle, and a second intermittent operation mode in which the high-pressure air is injected at a cycle shorter than in the first intermittent operating mode, wherein, as the predetermined condition, when it is detected that the outside air temperature is higher than the predetermined temperature, the control unit executes the first intermittent operation mode when it is detected that a travelling speed of the vehicle (V) is equal to or lower than a predetermined speed, and the control unit executes the second intermittent operation mode when it is detected that the travelling speed is faster than the predetermined speed. <EOS>