▎ 摘　　要

NOVELTY - The planar heating element (100) has a buffer element that extends in the longitudinal direction on the upper end of the interior. A first panel layer is coupled to the inside of the buried frame (110) and formed of tempered glass. A second panel layer is laminated and bonded in the same shape as the first panel layer. A carbon nanotube and graphene mixed heating layer is coated between the first panel layer and the second panel layer and generated when an electric current is applied. An electrode layer is coupled to both sides of one side of the carbon nanotube and graphene mixed heating layer to supply a current, and a bimetal coupled to one side of carbon nanotube. The buffer element includes cutouts formed at equal intervals along the longitudinal direction to block the shock and vibration transmitted in the longitudinal direction. USE - Floor planar electric heating element for heating floor of indoor space e.g. living room in residential areas, or wall of home or office, and hot water line piped from boiler installed in floor. ADVANTAGE - The heat is exposed to the outside from the portion close to the wall when heat is generated in the nanotube and graphene mixed heating layer, thus increasing the indoor temperature quickly and uniformly. The air in the internal space is circulated by the driving of the circulation fan to increase the internal temperature quickly and accurately. DESCRIPTION OF DRAWING(S) - The drawing shows a side view of a floor planar heating element. Floor (10) Planar heating element (100) Buried frame (110)