| 摘要 |
PROBLEM TO BE SOLVED: To provide a crime prevention sheet which is easily installed and carried anywhere and by anyone by devising materials and the shape, reducing weight and miniaturizing it. SOLUTION: The crime prevention sheet makes crump warning sound when it is stepped by providing irregularity as shown in Fig. on an aluminum board, a steel board, a plastic board and a PET board with thickness of 1mm or less, its weight is reduced, it is miniaturized and installation and carrying properties are enhanced. A footrest stand 6 for a family member to put a foot and a recess 3 for putting a weight for not moving easily are provided and a connection part 4 is provided to an edge for connecting the crime prevention sheets which make the crump warning sound when they are stepped. COPYRIGHT: (C)2005,JPO&NCIPI
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