| 摘要 |
A control device (1B) of a motor unit includes a housing (60), and a circuit board (70) that is housed in the housing (60). The circuit board (70) includes a first substrate portion (71) which is fixed to a side wall (61) and in which heat dissipation components (71 C) are fitted onto a first main surface (71 A), a second substrate portion (72) in which a second main surface (72A) faces the first main surface (71A) of the first substrate portion (71), and heating elements (72C) are fitted onto the second main surface (72A), and a first connecting portion (74) that connects an end portion of the first substrate portion (71) with an end portion of the second substrate portion (72). The heating elements (72C) and the heat dissipation components (71C) face each other. |
