Patent attributes
A bed with a bed cushion has a bed cushion surface integrally formed by emulsion. The surface of the emulsion bed cushion surface having a plurality of wind trenches. Each wind trench has a plurality of vents for venting air. The bed cushion surface being elastic; one lateral side of the bed cushion having a through hole. A periphery of the through hole being enclosed by is a soft protrusion. A head portion of a bed is formed with an enclosing trench with a configuration with respect to the protrusion. A via hole is formed in the enclosing trench. A fan is installed within the hole. The enclosing trench is tightly engaged to the protrusion so that the wind out of the fan flows into the bed cushion from the through hole. Then the wind is vented out of the bed cushion surface from the vents.
