Inverter-integrated electric compressor

An inverter-integrated electric compressor, comprising

• an inverter box provided on an outer surface of a housing that contains a compressor for a refrigerant and an electric motor that drives the compressor,
• an inverter that has a control circuit board and is housed and installed in the inverter box, and
• a heat-producing electrical component that is loaded on the control circuit board and constitutes the inverter,
• a heat-dissipating planar part that constitutes an outer wall of the housing being formed inside the inverter box, and
• heat of the electrical component being cooled by being dissipated to the heat-dissipating planar part side,
• wherein the control circuit board serves as a thermally-conductive substrate,
• the thermally-conductive substrate includes a substrate body made of an insulator, and a heat-conducting through member made of a good thermal conductor and filled through in a thickness direction of the substrate body,
• the heat-conducting through member is located on the thermally-conductive substrate to conform to a loading position of the electrical component, and
• in the heat-conducting through member, one end surface thereof is disposed in a heat transferable manner on the heat-dissipating planar part, and the electrical component is disposed in a heat transferable manner on the other end surface.