Encasement apparatus and projection system

An encasement apparatus comprising:

• a case main body configured to freely encase equipment in an inside portion thereof,
• wherein the case main body comprises a first partition wall configured to divide a space in the inside portion into a first isolated space and a second isolated space together with the equipment in such a state that the equipment is encased in the inside portion,
• wherein the equipment comprises at least one intake port and at least one discharge port, and
• wherein in such a state that the equipment is brought into abutment directly or indirectly with the first partition wall and the equipment is encased in the inside portion of the case main body, the at least one intake port and the at least one discharge port of the equipment are individually disposed in the first isolated space and the second isolated space which are isolated from each other by the equipment and the first partition wall.