Contact type of electric connection building block

A contact type of electric connection building block, comprising:

• a base having a plurality of recesses defined in a bottom thereof and a circuit board disposed on a top thereof, the circuit board including a first connection circuit, a second connection circuit and an electronic component connected with the first connection circuit and the second connection circuit;
• a plurality of electric connection posts mounted on the circuit board, a bottom of each electric connection post being received in the corresponding recess, each electric connection post having an exterior sheath and an interior post disposed in the exterior sheath, the exterior sheath and the interior post being made of a conductive material, each of the exterior sheath and the interior post including a first insertion portion disposed at a top thereof and a second insertion portion corresponding to the first insertion portion and disposed at a bottom thereof, the exterior sheath being pressed against the first connection circuit of the circuit board, an insulator being disposed between the exterior sheath and the interior post to insulate the exterior sheath from the interior post, the interior post being pressed against the second connection circuit of the circuit board;
• and
• a hollow and light transmittable top cover mounted on the top of the base, the top cover including a plurality of hollow studs disposed on a top thereof, the plurality of the electric connection posts being respectively received in the hollow studs.