An air conditioning device for a vehicle, comprising: a blower unit having a blower that blows air; a temperature regulation unit disposed on a side of the blower unit, the temperature regulation unit having an evaporator provided with an inflow plane extending in a flow direction of the air blown from the blower and configured to exchange heat with air inflowing through the inflow plane; and a deflection guide disposed upstream of the evaporator in a direction of a flow of air flowing into the inflow plane of the evaporator, the deflection guide deflecting a flow of the air from the blower to the inflow plane of the evaporator, wherein: the deflection guide includes, a deflection portion having a plate shape and inclined with respect to the inflow plane of the evaporator, and a support portion (72 or 72a1, 72a2, 72b1, and 72b2) supporting the deflection portion; and the deflection portion changes a direction of a flow of the air blown from the blower toward an end part of the inflow plane adjacent to the blower, wherein the blower unit includes a first blower case and a second blower case which are combined to each other to store the blower; the deflection guide includes a first deflection guide portion as an integral part of the first blower case, and a second deflection guide portion as an integral part of the second blower case; characterised in that the deflection guide is shaped like an air channel in which to flow air; and the deflection portion includes a first deflection portion and a second deflection portion that face each other and bridge across the support portion (72a1, 72a2, 72b1, and 72b2). a blower unit having a blower that blows air; a temperature regulation unit disposed on a side of the blower unit, the temperature regulation unit having an evaporator provided with an inflow plane extending in a flow direction of the air blown from the blower and configured to exchange heat with air inflowing through the inflow plane; and a deflection guide disposed upstream of the evaporator in a direction of a flow of air flowing into the inflow plane of the evaporator, the deflection guide deflecting a flow of the air from the blower to the inflow plane of the evaporator, wherein: the deflection guide includes, a deflection portion having a plate shape and inclined with respect to the inflow plane of the evaporator, and a support portion (72 or 72a1, 72a2, 72b1, and 72b2) supporting the deflection portion; and the deflection portion changes a direction of a flow of the air blown from the blower toward an end part of the inflow plane adjacent to the blower, wherein the blower unit includes a first blower case and a second blower case which are combined to each other to store the blower; the deflection guide includes a first deflection guide portion as an integral part of the first blower case, and a second deflection guide portion as an integral part of the second blower case; characterised in that the deflection guide is shaped like an air channel in which to flow air; and the deflection portion includes a first deflection portion and a second deflection portion that face each other and bridge across the support portion (72a1, 72a2, 72b1, and 72b2). the deflection guide includes, a deflection portion having a plate shape and inclined with respect to the inflow plane of the evaporator, and a support portion (72 or 72a1, 72a2, 72b1, and 72b2) supporting the deflection portion; and a deflection portion having a plate shape and inclined with respect to the inflow plane of the evaporator, and a support portion (72 or 72a1, 72a2, 72b1, and 72b2) supporting the deflection portion; and the deflection portion changes a direction of a flow of the air blown from the blower toward an end part of the inflow plane adjacent to the blower, wherein the blower unit includes a first blower case and a second blower case which are combined to each other to store the blower; the deflection guide includes a first deflection guide portion as an integral part of the first blower case, and a second deflection guide portion as an integral part of the second blower case; characterised in that the deflection guide is shaped like an air channel in which to flow air; and the deflection portion includes a first deflection portion and a second deflection portion that face each other and bridge across the support portion (72a1, 72a2, 72b1, and 72b2).