Dropped ceiling with eco-friendly ceiling panels

Abstract

This invention relates to a suspended ceiling, comprising a metal grid structure and a plurality of drop-in ceiling panels supported by the metal grid structure. Each of the ceiling panels includes a thermal conductive metal substrate, a heat insulating coating formed on the top surface of the metal substrate, and a thermal conductive ceramic coating formed on the bottom surface of the metal substrate. The heat insulating coating is provided to prevent heat generated in a plenum space between the dropped ceiling and a actual ceiling from traveling down to the room below the dropped ceiling. And, the thermal conductive ceramic coating is provided to enhance a heat transfer capability of the metal substrate. As such, the ceiling panels can facilitate rapid cooling of an air-conditioned room.

What is claimed is: 
     
         1 . A ceiling panel, comprising:
 a thermal conductive metal plate having a top surface, a bottom surface and a peripheral edge surrounding the top surface and the bottom surface;   a heat insulating coating formed on the entire top surface of the thermal conductive metal plate, and having a thickness of from 0.2 to 0.5 mm and having less thickness than the thermal conductive metal plate, wherein the heat insulating coating comprises acrylic resin and nanoporous silica; and   a thermal conductive ceramic coating formed on the entire bottom surface of the thermal conductive metal plate, and having a thickness in the range of about 10 to 30 μm and having less thickness than the heat insulating coating, wherein the thermal conductive ceramic coating comprises an inorganic resin doped with inorganic heat conductive powder.   
     
     
         2 . A ceiling panel as recited in  claim 1 , wherein the inorganic heat conductive powder of the thermal conductive ceramic coating has at least one material selected from the group consisting of graphite, graphene, Titanium dioxide, Silicone carbide, and mica.