Provided are a paint composition capable of forming a cured paint film layer having excellent heat resistance, durability, scratch resistance and impact resistance and a long-term self-cleaning function, and a heat-reflecting mirror for a solar heat collector having the cured paint film layer. The heat-reflecting mirror for a heat reflector is produced using a paint composition for a glass coating that comprises the following (A) through (C): (A) a fluoroolefin copolymer having at least one type of crosslinkable functional group selected from the group consisting of hydroxyl, carboxy, amino, epoxy, oxetan, alkoxysilyl, and isocyanate groups; (B) at least one curing agent selected from isocyanate curing agents, blocked isocyanate curing agents, and amino resins; and (C) an oligomer of a tetrafunctional hydrolysable silane compound.
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