PROBLEM TO BE SOLVED: To provide a game ball, useful for children's safety, which can be detected far enough away a distance by an on-board radar.
SOLUTION: The game ball is provided wherein a reflector member 12 is disposed within a spherical shell 13, the diagonal distance of the reflector member coincides with the inner diameter of the spherical shell, the reflector member has a shape constructed by combining three regular polygon plates 11A, 11B, 11C, the center angle of one side thereof being an integer submultiple of 90, in such a manner that the centers of the three regular polygon plates are coincident and that the three regular polygon plates are perpendicular to each other, and a surface of the reflector member 12 is imparted with electromagnetic wave reflectivity.
- 学校法人 東京電機大学 研究推進社会連携センター（承認TLO)
- URL: https://www.dendai.ac.jp/
- Address: 〒120-8551 東京都足立区千住旭町５番
- TEL: 03-5284-5225
- FAX: 03-5284-5242