| 摘要 |
PROBLEM TO BE SOLVED: To quickly set a correct display board in a display position by replacing a wrong display board when the wrong display board is displayed in the display position for the display board. SOLUTION: In a leaf type display unit 300, a stopper 341 is made to retreat outside of a rotatio locus of the display board, the spiral member 618 of a display board rotationally driving unit 600 is rotated to rotate the shaft piece portion 395 of the display board rearward, and then the display board rotated rearward is engaged with the stopper 341. A rotary drum 331 is rotated by a predetermined angle rearward to return a pair of upper and lower display boards in the display position to a pair of upper and lower display boards preceding on the rearward rotation side. Consequently, when the wrong display board is displayed in the display position of the display board, the correct display board can be quickly displayed in the display position instead of the wrong display board. COPYRIGHT: (C)2008,JPO&INPIT
|
