Air conditioning device for vehicle

An air conditioning device for a vehicle, comprising a casing, an introduction port formed in the casing and inside air or outside air being introduced through the introduction port, a blower configured to take in air through the introduction port under a driving operation, and an involute shaped air blowing passage, the air that is taken in by the blower being blown out through the air blowing passage, and further comprising an inside/outside air switching unit, a filter being accommodated in an interior of the inside/outside air switching unit through an insertion opening that is formed in the casing,

• wherein a guide member configured to guide the filter along an insertion direction from the insertion opening to the interior is provided on an inner wall surface of the casing, and wherein the guide member, at a time that the filter begins to be inserted from the insertion opening, inclines a rear side in the insertion direction of the filter upwardly, and further tilts the filter midway during insertion thereof, whereby when the filter is accommodated, a front side in the insertion direction of the filter is in an upwardly inclined state,
• wherein the guide member comprises:
• a first lower guide inclined upwardly from a lower end of the insertion opening toward a rear side in the insertion direction;
• a second lower guide inclined downwardly from an end on the rear side in the insertion direction of the first lower guide;
• a first upper guide extending from an upper end of the insertion opening toward the rear side in the insertion direction, and being formed in parallel with and separated at same distance as a thickness of the filter with respect to a line of extension of the second lower guide;
• a second upper guide extending from an end on the rear side in the insertion direction of the first upper guide toward the rear side, and including an angle thereof with respect to a horizontal direction that is smaller than an angle of the first upper guide with respect to the horizontal direction;
• and
• a third upper guide formed on the rear side in the insertion direction with respect to the second upper guide, and formed on a line of extension of the first upper guide.