Abstract: An electric compressor includes: a compression part; an electric motor; an inverter; a housing including a plurality of housing forming members made of metal; a seal member that has an insulation property and is provided between the housing forming members adjacent to each other; and a potential equalization member that is made of metal and is in contact with both the adjacent housing forming members to equalize potentials of the adjacent housing forming members. The adjacent housing forming members include mating surfaces, respectively. An insertion hole is formed in one of the mating surfaces of the adjacent housing forming members, at a position in which the seal member is not provided. The potential equalization member includes an insertion portion inserted into the insertion hole, and a contact portion that is a plate portion extending in a gap between the mating surfaces and is in contact with both the mating surfaces.

Abstract: A tidal power generating device having a large area to receive pressure of a tidal current and can be used in a water surface region. The tidal power generating device includes a cylindrical body that floats by itself and a blade that is continuously provided from a front portion to a rear portion on an outer periphery of the cylindrical body and has torsion in a single direction. The cylindrical body has an interior space through which a power generating nonrotary shaft, a connecting pipe, and a mooring nonrotary shaft pass. The power generating nonrotary shaft is provided with a fan-shaped weight and a power generator. The rear portion of the cylindrical body is sunk when the tidal power generating device is placed on water.

Abstract: The invention provides a tidal power generating device that has a large area to receive pressure of a tidal current and can be used in a water surface region. The tidal power generating device includes a cylindrical body that floats by itself and a blade that is continuously provided from a front portion to a rear portion on an outer periphery of the cylindrical body and has torsion in a single direction. The cylindrical body has an interior space through which a power generating nonrotary shaft, a connecting pipe, and a mooring nonrotary shaft pass. The power generating nonrotary shaft is provided with a fan-shaped weight and a power generator. The rear portion of the cylindrical body is sunk when the tidal power generating device is placed on water.