PURPOSE: To increase strength in view of the structure, facilitate bonding work between members, and maintain a shielding function, reflecting function and the like.

CONSTITUTION: A basic truss 1 is constituted of surfaces 3, 3 formed into a planar shape in a manner crossing each other on two imaginary surfaces 2, 2 crossing each other in the direction of an imaginary axis Z-Z, and arms 4, 4 formed to extend from on surface 3 toward the other surface 3 on the two imaginary surfaces 2, 2. The plurality of basic trusses 1 are combined, thus obtaining the truss structure.