| 摘要 |
PROBLEM TO BE SOLVED: To inexpensively provide a tool for preliminarily preventing illegal invasion to a building. SOLUTION: This crime preventing tool for preventing the crime of an illegal person who tries to invade through a gutter 2 is provided with a U-shaped cross section when it is viewed from the radial direction cross-section of the gutter 2, and the opening edge face is matched with a wall surface 4 set with the gutter 2 so that the gutter 2 can be covered, and the outer peripheral surface is extended in parallel with the central axial line of the gutter 2. When the vertically set gutter 2 is covered, it is preferably that the length of the gutter 2 in the central axial direction is 1m or more, and when the horizontally set gutter 2 is covered, preferably the outer peripheral surface is inclined to the horizontal surface so as to be extended toward the opening. COPYRIGHT: (C)2005,JPO&NCIPI
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