A vehicle air conditioning device has an air-conditioning unit including a temperature regulation unit having an evaporator and a blower unit including a blower. The blower unit is offset to a side of the temperature regulation unit. A deflection guide to deflect a flow of air is provided upstream of the evaporator in a flow of air flowing into an inflow plane of the evaporator from the blower. The deflection guide has a plate-like defection portion inclined with respect to the inflow plane, and a support portion supporting the deflection portion by extending from the blower unit. A gap is provided between the support portion and the evaporator. Air that has collided with the deflection portion is changed in flow direction to head for the blower side of the inflow plane.