To minimize degradation of utility of a balcony with respect to a balcony installation structure installing a solar heat collector, a hot water storage tank, etc. of a solar heat utilization device.

This solar heat utilization device 1 is constituted to collect and utilize the heat from the sun by the solar heat collector 2, and the solar heat collector is installed in the balcony 8 of a building 7 by being fixed to a ceiling 9 of the balcony and the like. By applying this installation structure, a Futon (Japanese-style bedding) can be hung on handrails of the balcony to be dried without any restriction, and the degradation of utility of the balcony can be prevented.