| 摘要 |
PROBLEM TO BE SOLVED: To make a color cone hardly crack even when it is thrown and dropped in an overlapped state by providing a rib matched to the shape of the head part or the base part of the color cone on the edge inside or the base inside of the color cone. SOLUTION: A rib 11 matched to the outer shape of the head part 10 of the color cone 1 is provided on the edge inside of a color cone 1. Even when the color cone 1 is thrown and dropped in an overlapped state, it is hardly cracked because it receives a shock by the rib 11. Furthermore, when a space 12 is provided in the center in which the rib 11 intersects, further more hard to crack because the shock is received by widening the rib 11. When a rib 21 matched to the outer shape of a base part 20 is provided in the inside of the base part 20 of the color cone 1, similar effect can be obtained. In addition, when an uneven part is provided on the edges of the ribs 11, 21, the effect is further large.
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