To provide a folding type signal tower which is not an obstacle by being folded with ease even if an opening at an installation place is not adaptive to the height of a pole type signal tower when a device is carried in or out while fitted to a semiconductor manufacturing device or a manufacturing device for other various products and is adaptive without any problem when the device is carried in or out by freely being changed in the folding direction at this time according to a fitting plate.

This folding type signal tower is fitted to proper places of various device main bodies which are carried in and out and equipped with a column and an alarm lamp, and the column can be folded.