| 摘要 |
<p>In a circuit board (22), a control pattern portion (43) in which control circuit patterns (41) are formed and a drive pattern portion (44) in which drive circuit patterns (42) are formed are formed in different regions. A recessed portion (45) is formed in a base (23), and the drive pattern portion (44) is fixed to the base (23) such that insulation between a drive circuit and the base (23) is maintained and the control pattern portion (43) is arranged above the recessed portion (45). In this way, a space (S) in which a circuit element (47) is able to be mounted is formed between the control pattern portion (43) and the recessed portion (45).</p> |
