To enhance a humidifying function, to facilitate miniaturization greatly and to attain sufficient inexpensiveness by providing a plurality of spray nozzles respectively for a plurality of fitting parts of a nozzle main body, while using a single liquid water tank therefor.

A nozzle part 11 has a nozzle main body 12, which is equipped with a plurality of fitting parts 13. Moreover, an internal liquid supply passage 16 reaching each of the fitting parts 13 is provided in the nozzle main body 12 and it is opened in the end face of each fitting part 13. The internal liquid supply part 16 has a connecting pipe 17 extending vertically inside a nozzle casing 10A along the center line thereof and this pipe is connected liquid-tightly to a syphon pipe extended from a liquid water tank 18. A spray nozzle 11A or a stop part 11B formed of an elastic material is provided for each fitting part 13 of the nozzle main body 12 so that it can be fitted to this part. The spray nozzle 11A and the stop part 11B are formed identical in contours substantially, and are made to have interchangeability.