| 摘要 |
PROBLEM TO BE SOLVED: To provide a screen unit having a structure which enables a screen to be exchanged on site and can remarkably reduce a construction period and cost required for exchanging the screen.SOLUTION: A roll 8 for winding a screen 7 is divided into a roll body 8a and a screen attaching attachment 8b detachably attached to a part of the outer periphery of the roll body 8a. When exchanging the screen 7, the screen 7 is attached/detached along with the attachment 8b while the roll body 8a is left in an installation place. Moreover, in a state that a slide bottom is moved to a foremost part and the screen is completely opened, the screen attaching attachment 8b is structurally positioned on the top face of the roll body 8a. |
