TRANSPARENT HEATER

A transparent heater comprising a conductive film and a connection part connectable to a power feeding apparatus, the conductive film comprising a transparent substrate and a conductive part comprising a fine metal wire pattern disposed on one side or both sides of the transparent substrate, wherein the fine metal wire pattern is constituted by a fine metal wire, and the fine metal wire has voids, and when the cross-sectional area of the fine metal wire is defined as SM and the total cross-sectional area of the voids included in the cross-section of the fine metal wire is defined as SVtotal on the cross-section of the fine metal wire perpendicular to the direction of drawing of the fine metal wire, SVtotal / SM is 0.10 or more and 0.40 or less.