Importance

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Abstract

An electric bed heating device for attachment to the understructure of a bed for supplying heat to a sleeper includes an electric heating element mounted below a metallic plate thermally insulated on its upper side and having a lower face shaped to radially downwardly direct heat. In one embodiment the heating element is directly supported by vertical fins extending downwardly and radially outwardly from the lower face of the plate with the fins and heating element being exposed. In another arrangement a serially slit lower metallic plate is spaced below the first mentioned plate to allow flow of air therebetween. The lower plate supports an electric heating element in the path of the air flow. The slits in the lower plate form offset air inlet and outlet openings. The plates are aligned and attached to the bed structure by a central fastener binding the plates together. The upper face of the lower plate is roughened and blackened to enhance heat absorption. The device may be provided with a timer, thermostat or thermal fuse in circuit with the heating element for controlling operation of the heating element. In use the heating device distributes heated air across the underside of the bedding thereby creating temperatures above ambient in the area bounded by a vertical bed covering extending about the periphery of the bed and which restricts the heated air from flowing from beneath the bed.

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First Claim