SIGNBOARD FRAME WITH DROPOUT PREVENTIVE MECHANISM

摘要

PROBLEM TO BE SOLVED: To provide a signboard frame which makes an opening/closing frame easily removable and which enables a user to easily make an operation to prevent the dropout thereof. SOLUTION: This signboard frame with a dropout preventive mechanism is a signboard frame provided with the opening/closing frame 2 for attaching a spreading sheet 1 to the front surface of a box-shaped frame 3 and rotationally movably fitted with a locking section 5 of the opening/closing frame 2 and a section 4 to be locked of the box-shaped frame 3 and is provided with a detachment preventive member 6 touchable to the section 4 to be locked of the box-shaped frame 3 in order to prevent the detachment of the locking section 5 and the section 4 to be locked and this detachment preventive member 6 is provided with movable means which is capable of releasing the touchable state to the section 4 to be locked.