Patent ID: 7200327

Claim:
An electric heating device comprising: an electric radiator comprising a set of individual heating modules and a casing; at least one resistive element constituted by at least one zigzag metal strip mounted in the casing; a power supply; a resistive element or elements connected to the power supply; a control circuit for controlling the electrical supply of the resistive element or elements; wherein each heating module ( 20 ) comprise a pleated or corrugated metal strip ( 22 ) and an electronic switch ( 25 ) controlled by the control circuit, wherein the pleated or corrugated metal strip ( 22 ) and the electronic switch ( 25 ) selectively inhibit the electrical supply of the metal strip ( 22 ), wherein each heating module ( 20 ) also comprises an insulating support ( 40 ), and the insulating support ( 40 ) comprises a molded rail ( 45 ) to hold the metal strip ( 22 ) in position, and wherein when air passes through the radiator the at least one zigzag metal strip is disposed so as to be directly exposed to the air passing through the radiator and wherein the in individual heating modules ( 20 ) are disposed parallel to one another in the casing.