PROBLEM TO BE SOLVED: To miniaturize an electronic control device by reducing the influence of heat between circuit boards.;SOLUTION: In an electronic control device 1, a first circuit board 10 and a second circuit board 11 are arranged in a housing case 2 so as to vertically and partially overlap each other. A heat shielding plate 15 is extended in that region of the housing case 2 where the two circuit boards 10 and 11 overlap each other. With the heat shielding plate 15, heat generated by an electronic component 33 of the first circuit board 10 on the lower side is prevented from being directly transferred to the second circuit board 11. Since an arrangement interval between the two circuit boards 10 and 11 can be reduced, the electronic control device 1 can be miniaturized.;COPYRIGHT: (C)2014,JPO&INPIT
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