A vehicle air conditioning device, comprising: a seat a sucking section (52, 102) configured to be provided at the seat (30, 38) that is disposed over a floor portion of a cabin, the sucking section (52, 102) being configured to suck air via the seat (30, 38) from a vehicle front side relative to the seat (30, 38) and from a floor portion side relative to a vehicle vertical direction middle of the cabin; and a guiding section (72, 104) configured to guide air sucked by the sucking section (52, 102) toward the floor portion side at a vehicle rear side relative to the seat (30, 38) wherein: the seat (30, 38) is a front seat; the sucking section is configured to suck air via the front seat; the guiding section is configured to guide air sucked by the sucking section toward the floor portion side of a rear seat; the seat includes a seat cushion portion on which a vehicle occupant can sit, and the sucking section is configured to suck air via the seat cushion portion; the seat includes a seat back portion that extends to the vehicle upper side from the seat cushion portion; the sucking section includes a first sucking section configured to suck air via the seat cushion portion, and a second sucking section configured to suck air via the seat back portion; and the guiding section includes a first duct configured to guide air flowing from the first sucking section toward the floor portion side at the vehicle rear side relative to the seat, characterized in that the guiding section includes a second duct, connected to an inflow portion of the first sucking section, configured to guide air sucked by the second sucking section toward the first sucking section. a seat a sucking section (52, 102) configured to be provided at the seat (30, 38) that is disposed over a floor portion of a cabin, the sucking section (52, 102) being configured to suck air via the seat (30, 38) from a vehicle front side relative to the seat (30, 38) and from a floor portion side relative to a vehicle vertical direction middle of the cabin; and a guiding section (72, 104) configured to guide air sucked by the sucking section (52, 102) toward the floor portion side at a vehicle rear side relative to the seat (30, 38) wherein: the seat (30, 38) is a front seat; the sucking section is configured to suck air via the front seat; the guiding section is configured to guide air sucked by the sucking section toward the floor portion side of a rear seat; the seat includes a seat cushion portion on which a vehicle occupant can sit, and the sucking section is configured to suck air via the seat cushion portion; the seat includes a seat back portion that extends to the vehicle upper side from the seat cushion portion; the sucking section includes a first sucking section configured to suck air via the seat cushion portion, and a second sucking section configured to suck air via the seat back portion; and the guiding section includes a first duct configured to guide air flowing from the first sucking section toward the floor portion side at the vehicle rear side relative to the seat, the seat (30, 38) is a front seat; the sucking section is configured to suck air via the front seat; the guiding section is configured to guide air sucked by the sucking section toward the floor portion side of a rear seat; the seat includes a seat cushion portion on which a vehicle occupant can sit, and the sucking section is configured to suck air via the seat cushion portion; the seat includes a seat back portion that extends to the vehicle upper side from the seat cushion portion; the sucking section includes a first sucking section configured to suck air via the seat cushion portion, and a second sucking section configured to suck air via the seat back portion; and a first sucking section configured to suck air via the seat cushion portion, and a second sucking section configured to suck air via the seat back portion; and the guiding section includes a first duct configured to guide air flowing from the first sucking section toward the floor portion side at the vehicle rear side relative to the seat, characterized in that the guiding section includes a second duct, connected to an inflow portion of the first sucking section, configured to guide air sucked by the second sucking section toward the first sucking section.