Patent ID: 9061656
Filing Date: 2015-06-23
Classification: A47C,B60S,F24D,H01C,H05B,Y10T

Abstract:
1. A panel heating element, comprising: at least one substrate with a substrate surface, an electrical heating layer made from an electrically conductive material for heating the substrate, wherein the electrical heating layer extends at least over a part of the substrate surface and is connected to at least two electrodes provided for connection to a voltage source such that a current path for a heating current is formed between the electrodes, one or more separating zones, which electrically divide the electrical heating layer, wherein the one or more separating zones are linearly implemented as one or more separating lines, the one or more separating lines having a total surface area smaller than a total surface area of the electrical heating layer, wherein the one or more separating zones have in each case at least one free zone end and are implemented such that the current path changes its direction of flow on the zone ends, and wherein, in each case, a transition zone, which is linearly implemented such that an electrical conductivity of the electrical heating layer decreases toward the free zone end, adjoins the zone end of each separating zone, wherein an electrical conductivity at the beginning of the transition zone is zero and an electrical conductivity at the end of the transition zone has a value equal to a maximum value of the electrical conductivity of the heating layer.