Heating device for electrodiffuser

An electrodiffuser comprising an electric plug (6) fitted on a support body (9;

• 409) including a heating device (1;
• 100;
• 200;
• 300;
• 400) in contact with a porous element (83;
• 480) containing active ingredients which are diffused when the porous element is heated, wherein said heating device comprises a housing shell (2, 4;
• 402, 404) including resistive means (R1, R2) which are heated when a current passes through them in order to heat, by heat exchange, said housing shell which is in contact with a porous element (83;
• 480) soaked with active ingredients, which are diffused when said porous element is heated,
• wherein said resistive means are at least two resistances (R1, R2) connected in series by a conductive connecting element (7) having good characteristics of electricity and heat conduction to realise the electric connection of the resistive means (R1, R2) and, at the same time, to act also as a heating element.