PROBLEM TO BE SOLVED: To properly store a battery in a transparent body. A transparent body (1) includes a transparent body (2), an anti-fog device (4) that removes fogging of the transparent body (2), and a battery (3) that supplies power to the anti-fog device (4). The battery 3 has a positive electrode 31a in which a transparent positive electrode conductive film 33a and a transparent positive electrode layer 34a are laminated on an insulating transparent positive electrode side casing 32a, and an insulating transparent negative electrode side casing 32b is transparent. The negative electrode conductive film 33b and the transparent negative electrode layer 34b are laminated, and the transparent electrolyte layer 35 disposed between the facing positive electrode layer 34a and the negative electrode layer 34b. The film thickness of the positive electrode conductive film 33a, the negative electrode conductive film 33b, the positive electrode layer 34a, and the negative electrode layer 34b is a thickness that suppresses absorption of visible light in incident light and promotes transmission thereof. [Selection diagram]【課題】透明体に、適切に電池を収納する。【解決手段】透明体１は、透明体本体部２と、透明体本体部２の曇りを除去する曇り止め装置４と、曇り止め装置４に電力を供給する電池３を備える。電池３は、絶縁性の透明な正極側筐体３２ａ上に透明な正極導電性フィルム３３ａと透明な正極層３４ａが積層された正極３１ａと、絶縁性の透明な負極側筐体３２ｂ上に透明な負極導電性フィルム３３ｂと透明な負極層３４ｂが積層された負極３１ｂと、対向する正極層３４ａと負極層３４ｂの間に配置された透明な電解質層３５と、を備える。正極導電性フィルム３３ａ、負極導電性フィルム３３ｂ、正極層３４ａおよび負極層３４ｂの膜厚は、入射光のうち可視光の吸収を抑制し透過を促進する厚さである。【選択図】 図１
