The invention provides a game ball, useful for children's safety, which can be detected far enough away a distance by a vehicle-onboard radar. The invention provides a game ball 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 11 A, 11 B, 11 C, the center angle of one side thereof being an integral 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 said reflector member 12 is imparted with electromagnetic wave reflectivity.
1. A game ball, wherein octant sections are obtained by forming a bisection of a sphere along a horizontal direction in the center of the sphere, and forming a quadrisection of the hemispheres along a first vertical direction and a second vertical direction, a conductive cover is applied to each of three division surfaces on an outer surface excluding a spherical surface of the octant sections, wherein the conductive cover covers each of the three division surfaces of the octant sections, wherein the eight octant sections are combined into the sphere, wherein the sections are bonded together, and wherein the game ball further comprises a leather outer cover that encases the sphere.
2. The game ball according to claim 1 , wherein the sphere is made of a rubber pliable material.
3. The game ball according to claim 1 , wherein the division surfaces are configured to form corner reflectors.
4. The game ball according to claim 3 , wherein there are eight corner reflectors.