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