A conductive member includes a conductive portion (13) in which conductive plates (12) are arranged at intervals in a plate thickness direction. An insulating portion (14) covers the conductive portion (13) and insulates between the plates (12). Each of the plates (12) has a penetrating connection hole (15) enabling electrical connection of each plate (12) to the outside. The connection holes (15) are disposed at positions displaced in a plate surface direction in the plates (12) and are exposed to the outside via open holes (17, 18) provided in the plates (12) and the insulating portion (14).