| abstract |
[PROBLEMS] To solve the problem that a safety aspect cannot be secured in an environment in which a flammable gas is used because there is no airtightness in a power control device, and to provide a power control device with excellent airtightness. A component mounting board 7 is housed in a case body 8 and a sealing resin 11 is used in a gap between holes 8a through which lead wires 6 are drawn, and a sealing agent is used in a gap between the case body 8 and the case cover 10. Thus, the sealed structure of the apparatus becomes possible, and the power control apparatus can be used with confidence even in an environment of flammable gas. [Selection] Figure 1 |