Patent ID: 6392207
Filing Date: 2002-05-21
Classification: B60H,F24H,H05B,H05K

Abstract:
An electric heating device, especially for use as a supplementary electric heating for motor vehicles, comprising:a plurality of heating elements (2) which are combined so as to form a heating block, said heating block being held in a rectangular frame (3, 4, 5), and a control device for controlling the heating elements (2), said control device defining a structural unit with the heating block held in the frame (3, 4, 5) and being provided with power transistors (11) which are arranged on a printed circuit board (10) and which are each provided with a cooling element (6), wherein the frame is defined by opposed longitudinal bars (3) and lateral bars (4, 5) arranged at right angles to said longitudinal bars (3), at least one of said lateral bars (5) is implemented as a box which is open on one side thereof and which is adapted to have the control device inserted therein, window openings (7) are provided in said lateral bar (5) and the cooling elements (6) of the power transistors (11) are located between respective opposed window openings (7) in the inserted condition of the control device.