Air conditioning system for vehicle

An air conditioning system for a vehicle, comprising:

• a duct case provided with an inlet and discharge opening means, said duct case having defined therewithin a cold-air passageway and a hot-air passageway which extend from said inlet toward said discharge opening means;
• heater means arranged within said hot-air passageway for heating air flowing through said hot-air passageway from said inlet toward said discharge opening means of said duct case;
• air-mixing damper means arranged for angular movement within said duct case at a location upstream of said heater means, for adjusting flow rate of air passing through said cold-air passageway and flow rate of air passing through said hot-air passageway;
• mode switching damper means arranged in association with said discharge opening means provided in said duct case, for switching blowing modes;
• and
• air mixing means including a plurality of cold-air blowing openings which open to said hot-air passageway at a location downstream of and adjacent to said heater means, and cold-air bypass passage means for leading cold air around said heater means to said cold-air blowing openings, wherein the cold air led by said cold-air bypass passage means is blown from said cold-air blowing openings into flow of hot air having passed through said heater means in such a fashion that flow of the cold air from said cold-air blowing openings is intersected with the hot-air flow, thereby forcibly mixing the cold air and the hot air with each other.