| 摘要 |
PROBLEM TO BE SOLVED: To wash an illumination window together with an observation window by using a single jetting nozzle by providing a rotary piece inside a nozzle main body for which plural jetting ports are opened on a peripheral body part, providing a rotating flow passage on the rotary piece and jetting fluid for washing from the respective jetting ports. SOLUTION: A fluid chamber 25 is formed on the tip surface of the tip part main body 21 of an insertion part, the nozzle main body 26 for constituting the jetting nozzle is provided in the fluid chamber 25 and washing liquid or pressurized air is selectively supplied to the fluid chamber 25 and jetted from the plural jetting ports 27 provided on the peripheral body part 26b of the nozzle main body 26. The rotary piece 28 is provided inside the nozzle main body 26 and a flow passage formation part 29 is formed at the peripheral body part 26b of the rotary piece 28. The flow passage formation part 29 is provided with a flow passage rotating member 30, and when fluid is supplied to the fluid chamber 25, the rotary piece 28 is rotated by the flow passage rotating member 30 and the flow passage formation part 29 is turned to a rotary flow passage. |
