Power converter incorporated in case

1. A power converter comprising:

a case body provided with a device main body having a power conversion part accommodated therein and an aperture;

a lid member which covers the aperture of the case body;

a first substrate fixed to the case body;

a second substrate fixed to the lid member; and

a connection member detachably fixed on the first and second substrates so as to electrically connect the first substrate and the second substrate, wherein

the lid member is provided with an opening window which is opened to an outside and an inside of the lid member such that connection between the second substrate and the connection member is enabled from the outside of the case body through the opening window, after the lid member is made to cover the aperture of the case body.

2. The power converter according to claim 1 , wherein the connection member is configured to be removed from either the first substrate or the second substrate when the lid member is removed from the case body.

3. The power converter according to claim 2 , wherein the connection member is configured such that electrical conduction through the connection member is shut off when the lid member is taken from the case body, and the connection member is fractured so as to be electrically disconnected.

4. The power converter according to claim 2 , wherein the first substrate has a high-voltage circuit mounted thereon and the second substrate has a low-voltage circuit mounted thereon, the high-voltage and low-voltage circuits being for power conversion performed by the power conversion part.

5. The power converter according to claim 1 , wherein the connection member is configured such that electrical conduction through the connection member is shut off when the lid member is taken from the case body, and the connection member is fractured so as to be electrically disconnected.

6. The power converter according to claim 5 , wherein the connection member has a lower-strength part such that the lower-strength part is fractured when the lid member is taken from the case body.

7. The power converter according to claim 6 , wherein the first substrate has a high-voltage circuit mounted thereon and the second substrate has a low-voltage circuit mounted thereon, the high-voltage and low-voltage circuits being for power conversion performed by the power conversion part.

8. The power converter according to claim 5 , wherein either one of the first and second substrates has a lower-strength part around a spot at which an end of the connection member is connected, such that the lower-strength part is deliberately fractured when the lid member is taken from the case body.

9. The power converter according to claim 8 , wherein the first substrate has a high-voltage circuit mounted thereon and the second substrate has a low-voltage circuit mounted thereon, the high-voltage and low-voltage circuits being for power conversion performed by the power conversion part.

10. The power converter according to claim 5 , wherein the first substrate has a high-voltage circuit mounted thereon and the second substrate has a low-voltage circuit mounted thereon, the high-voltage and low-voltage circuits being for power conversion performed by the power conversion part.

11. The power converter according to claim 1 , wherein the first substrate has a high-voltage circuit mounted thereon and the second substrate has a low-voltage circuit mounted thereon, the high-voltage and low-voltage circuits being for power conversion performed by the power conversion part.

12. The power converter according to claim 1 , wherein the lid member is provided with the opening member directly opposed to the connection member.

13. The power converter according to claim 12 , wherein the connection member is provided in plurality and the plurality of connection members are disposed two dimensionally on the first substrate.