An exhaust sirocco fan exhausts the air inside the projector outside. % alpha phase in a beta phase matrix. The source code file is transformed to obtain a reduced size source code file, which is a test case file that is equivalent to the source code file. As a result, it is possible to execute the refresh operation with a minimum increase in circuit scale and without any deterioration in access efficiency. The first female power outlets provide electrical output pathways. Each particular cell in the pattern has adjoining cells that are of a different type than the particular cell.