A projector including a projection section that projects image light, a power supply section that supplies the projection section with electric power, a first enclosure that accommodates the projection section, and a second enclosure that accommodates the power supply section, wherein the second enclosure is fixed to a ceiling joist receiver that serves as a support member that supports a ceiling plate that partitions a space into a living room space and a space behind a ceiling, and the first enclosure and the second enclosure are configured to be separate from each other.