FIG. 1 is a front perspective view of the convertible sofa bed being in a sofa position;
FIG. 2 is a front perspective view of the convertible sofa bed with the seat back being split into a middle sofa position and side bed positions;
FIG. 3 is a front perspective view of the convertible sofa bed being in a bed position;
FIG. 4 is a front perspective view of the convertible sofa bed being in a chaise lounge position;
FIG. 5 is a front elevated view of the convertible sofa bed being in a sofa position with raised side arms;
FIG. 6 is a front elevated view of the convertible sofa bed being in a sofa position;
FIG. 7 is a top view of the convertible sofa bed being in a bed position;
FIG. 8 is a side view of the convertible sofa bed being in a sofa position;
FIG. 9 is a side view of the convertible sofa bed with the seat back being between a sofa and bed position;
FIG. 10 is a side view of the convertible sofa bed with the seat back being between a sofa and bed position;
FIG. 11 is a side view of the convertible sofa bed with the seat back being between a sofa and bed position;
FIG. 12 is a side view of the convertible sofa bed being in a bed position;
FIG. 13 is a side view of the convertible sofa bed with the seat back being split into sofa and bed positions;
FIG. 14 is a side view of the convertible sofa bed with the seat back being split into sofa, lounge and bed positions;
FIG. 15 is a side view of the convertible sofa bed with the seat back being split into sofa and bed positions;
FIG. 16 is a back view of the convertible sofa bed being in a sofa position; and,
FIG. 17 is a bottom view of the convertible sofa bed being in a bed position.
The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design.