To provide a structure for improving the convection of air by opening a part of the upper surface of a printed board loaded on a washing machine and a washing and drying machine, the structure for not damaging a waterproof performance even in such a state and the structure for facilitating assembly work.
In order to improve heat radiation, a cylindrical structure is provided on a board case so as to be positioned between the fin part of a heat sink and a hole for inserting the cylindrical structure is provided on the printed board. In the case of covering with a board cover, the hole is provided on at least a part of a board case side face and the side face and bottom surface of the board cover. The hole provided on the printed board is arranged on an end face and separating work is facilitated.
HATTORI NAOKI
SOMA TSUNEHIRO
HOSOKAWA ATSUSHI
