A phosphor wheel device includes a phosphor wheel, a housing that accommodates the phosphor wheel, and a heat exchanger. A circulating gas flows between the housing and the heat exchanger. The housing includes a circulation fan, a first space in which the circulation fan is disposed, a second space in which gas is sent from the first space by the circulation fan, a third space in which the phosphor wheel is disposed, a first opening giving communication between the heat exchanger and the first space, a second opening giving communication between the first space and the second space, a third opening giving communication between the second space and the third space, and a fourth opening giving communication between the third space and the heat exchanger. The heat exchanger includes a circulation flow path through which circulating gas flows and an outside gas flow path through which outside gas flows.