PURPOSE: To effectively utilize space by turning a center roof for the side wall of a rear roof and compactly accommodating both the roofs, thus obviating the necessity of a wide space for accommodating both the roofs between the rear side of the car body.

CONSTITUTION: A cable 6 having an engagement pin 7 is installed in a whiftable manner at the edge part in a guide pipe 5 installed on the side wall 4 of a rear roof 3, and a guide hole 10 for guiding the engagement pin 7 is installed in a shitable manner on a supporting shaft 8 having a link 9 in close to the front end of the side wall 4, and a leading hole 11 is formed on the link 9. Further, a slot hole 14 is formed on an arm 13 installed on the side wall 12 of a center roof 2, and the end part of the link 9 is engaged, and the lower part of the side wall 4 is connected in a rotatable manner in close to the front end of the quater panel 15 of the car body, and the other end part of the cable 6 is connected at the upper part for the turning center of a rear roof 3, and the top end part of the arm 13 is connected in the vicinity of the center in close to the front end of the side wall 4. Accordingly, the center and rear roofs 2 and 3 can be accommodated in each compact form, between the rear sides of the car body 1, and the space can be effectively utilized.