| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sign device which saves manpower for installation and withdrawal, with easy handling and excellent workability. <P>SOLUTION: A sign device includes a couple of plates 2 each having a sign 1 such as an arrow warning mark or guide mark on a surface, of which upper ends are pivotally connected. An opening/closing device which opens or closes the plates 2 is disposed between the opposing faces of the plates 2. A control lever 5 is disposed above a pivot point 4 of the couple of plates 2. When the control lever 5 is pulled up, the opening/closing device widens the clearance between the lower ends of the couple of plates 2, so that the plate is shifted from a closed state to an open state. <P>COPYRIGHT: (C)2012,JPO&INPIT |
