| 摘要 |
Presented is an improved insulation device which, in multiple numbers, forms a swimming pool cover, or cover for other types of liquid containers. A complete cover is formed of multiple independent floatation insulation devices that collectively cover the entire surface of the water or liquid on which they float, yet enable dispersion thereof as a safety feature from below the surface of the water or liquid by a person in the water so that the person may extend his or her head through the cover to breath air. Structurally, the insulation device is hexagonal so as to cooperatively abut adjacent insulation devices to form a complete cover. The insulation device is injection molded-from plastic in two mirror image half-shells each of which is formed with a circular recess centrally disposed within the hexagonal outer periphery. Placing the two mirror image half-shells in confronting abutting position and sonic or electronic welding the union between them forms a unitary insulation device that disperses light and heat energy from the sun into the body of liquid on which the device floats. At least one surface of one of the circular recess is provided with a very thin layer of metal or silicon dioxide to form a "hot mirror" surface that functions to reflect back into the body of liquid heat energy that reflects from the bottom of the liquid container, be it the bottom of the swimming pool or the bottom of a container storing other types of liquids that require temperature management.
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