Motor-driven compressor

A motor-driven compressor, comprising:

• a compression portion configured to compress a fluid;
• an electric motor configured to drive the compression portion;
• an inverter configured to drive the electric motor;
• and
• a metal housing that accommodates the inverter, wherein
• the inverter includes:
• three-phase switching elements configured to perform switching operation;
• and
• a plastic holder that retains the three-phase switching elements,
• the metal housing includes a thermal radiation surface thermally coupled to the three-phase switching elements,
• the plastic holder includes a metal spring that presses a switching element at a middle of the three-phase switching elements toward the thermal radiation surface,
• the plastic holder is fixed to the metal housing using at least two fasteners,
• the three-phase switching elements are laid out between the two fasteners,
• switching elements at opposite ends of the three-phase switching elements are pressed toward the thermal radiation surface by only the plastic holder, and
• the switching element at the middle of the three-phase switching elements is pressed toward the thermal radiation surface by the plastic holder and the metal spring.