The first state shown in FIGS. 1A and 2A is a state in which the first casing 10 and the second casing 20 are opened or closed (in this embodiment, opened) with respect to one another, and a first conductor 122 installed from the connection section 300 to the first casing 10 faces a second conductor 240 installed from the connection section 300 to the second casing 20 so as to be separated from ea