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Automobile air conditioning (also called A/C) systems cool the occupants of a vehicle in hot weather. ==History== A company in New York City in the United States, first offered installation of air conditioning for cars in 1933. Most of their customers operated limousines and luxury cars. The Packard Motor Car Company was the first automobile manufacturer to offer an air conditioning unit into its cars, beginning in 1939.〔(【引用サイトリンク】title=Michigan Fast Facts and Trivia )〕 These air conditioners were manufactured by Bishop and Babcock Co, of Cleveland Ohio. The "Bishop and Babcock Weather Conditioner" also incorporated a heater. Cars ordered with the new "Weather Conditioner" were shipped from Packard's East Grand Boulevard facility to the B&B factory where the conversion was performed. Once complete, the car was shipped to a local dealer where the customer would take delivery. Packard fully warranted and supported this conversion, and marketed it well. However, it was not commercially successful for a number of reasons: * The main evaporator and blower system took up half of the trunk space (though this became less of a problem as trunks became larger in the post-war period). * It was superseded by more efficient systems in the post-war years. * It had no temperature thermostat or shut-off mechanism other than switching the blower off. (Cold air would still enter the car with any movement as the drive belt was continuously connected to the compressor—later systems would use electrically operated clutches to remedy this problem.) * The several feet of plumbing going back and forth between the engine compartment and trunk proved unreliable in service. * The price, at US $274 ($4,692.12 in 2014 US dollars), was unaffordable to most people in post-depression/pre-war America. Subsequently, the option was discontinued after 1941. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「automobile air conditioning」の詳細全文を読む スポンサード リンク
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