A unit connection terminal (26) is formed of an adhesion section (29) to be soldered onto a circuit board (21) and extending in a longitudinal direction, a terminal section (30) extending in the direction approximately orthogonal to the adhesion section extending in the longitudinal direction and to be connected to a counterpart-side circuit board, a bent section (31) bent so as to connect the adhesion section and the terminal section, and of a suction member (28) made of synthetic resin, fixed more to the terminal side than the bent section (31), and having a suction surface. More preferably, a projection position where the gravity center position of the entire unit connection terminal is projected toward the adhesion section side is included in the adhesion range of the adhesion section.