PROBLEM TO BE SOLVED: To provide a conductive ball having a stable structure, easy to attach and detach, and having good waterproof performance. SOLUTION: A conductive ball is attached to a mounting body 10 having a mounting guide groove 11 and integrally formed, a conductive mounting member engaged with the mounting body, and an outer surface of the mounting body. A heat-generating film 30 and a spherical outer casing 40 for fitting the outside of the mounting body are provided, and the conductive mounting member is mounted on the insulating mounting member 21 and the insulating mounting member and arranged at a distance from each other. The insulating mounting member is arranged so as to engage with the mounting body, and the electric lead-out piece extends so as to project into the mounting guide groove, and is electrically connected to the electrical mounting contact member 222. It comprises an electrical contact portion including a contact member 224, is electrically connected to a heat generating film, and the outer surface of the outer shell is covered with a plastic layer. [Selection diagram] Fig. 2【課題】構造が安定、取付け及び取り外しが容易、且つ、良好な防水性能を有する導電性ボールを提供する。【解決手段】導電性ボールは、取付ガイド溝１１を有し且つ一体に形成される取付本体１０と、取付本体に係合される導電性載置部材と、取付本体の外側面に貼り付けられる発熱フィルム３０と、取付本体の外側を嵌合する球形外側ケーシング４０とを備え、導電性載置部材は、絶縁載置部材２１と、絶縁載置部材に取付けられ且つ互いに間隔をあけて配置される複数の電気リードアウトピースとを備え、絶縁載置部材は取付本体に係合するように配置され、電気リードアウトピースは、取付ガイド溝に突出するように延び、電気取付接触部材２２２と電気接触部材２２４とを含む電気接触部を備え、発熱フィルムに電気的に接続され、外側シェルの外側面は、プラスチック層で覆われている。【選択図】図２
