Backrest air bed

FIG. 1 is a front, right, top perspective view of a backrest air bed showing our new design;

FIG. 2 is a back, left, bottom perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is an enlarged left view thereof;

FIG. 6 is an enlarged right view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof;

FIG. 9 is an enlarged view of detail 9 in FIG. 1 ;

FIG. 10 is an enlarged view of detail 10 in FIG. 1 ; and,

FIG. 11 is an enlarged view of detail 11 in FIG. 4 .