A terminal box includes a box body forming a recessed portion and a terminal board accommodated within the recessed portion and providing conduction between a tab of a solar cell panel and a power line. The terminal board includes a projecting portion projecting from the box body toward the solar cell panel, and a spring portion extended along a direction perpendicular to the projecting direction of the projecting portion. The projecting portion includes a contact portion for contacting the tab of the solar cell panel. The projecting portion is supported by a first-side end of the spring portion. The spring portion has a meander structure having a plurality of folded portions in a plane having a normal line perpendicular to both the projecting direction of the projecting portion and the extending direction of the spring portion.