AIR COOLING DEVICE

To provide an air cooling device using a cold insulation material, which is light-weighted and can reduce exchange frequency of the cold insulation material by prolonging cold insulation effect (25°C or below, for example) for more than one hour while sufficiently maintaining an air flow rate.SOLUTION: An air cooling device 1 using a cold insulation material for sending cold air for keeping a cold object cold from a blower fan 19 includes a cooling mechanism which makes outside air sucked from an intake port pass through a passage (main cooling chamber 9) provided inside to cool it to cold air and sends the cold air from blower means connected to the passage. The cooling mechanism includes: a main cooling cold insulation material 11 which is arranged inside the passage; and a backup cold insulation material 15 which is a cold insulation material different from the main cooling cold insulation material 11 and is arranged outside the passage. A thermally conductive material (copper plate partition plate 17) is used for a wall of the passage of a portion (cooling chamber 13) in which the backup cold insulation material 15 is arranged, and is covered with a heat insulation material such as urethane for cold insulation so as to accommodate and enclose the main cooling cold insulation material 11 and the backup cold insulation material 15 inside the cooling chamber .SELECTED DRAWING: Figure 1 【課題】 保冷材を用いた空冷装置であって、軽量で、送風流量を十分にしながらも、保冷効果（例えば２５℃以下）について１時間を超えるような長時間化を図って、保冷材の交換頻度を減らすことができる空冷装置を提供する。【解決手段】 保冷対象物を保冷する冷気を送風ファン１９から送り込む保冷材を用いた空冷装置１は、吸気口から吸気した外部の空気を内部に設けた通路内（主冷室９）を通過させて冷却し、前記通路に接続する前記送風手段から冷気を送り出す冷却機構を備え、前記冷却機構は、前記通路内に配置される主冷用保冷材１１と、主冷用保冷材１１とは別の保冷材であって前記通路の外側に配置されるバックアップ用保冷材１５とを備え、バックアップ用保冷材１５が配置されている部分（保冷室１３）の前記通路の壁が熱伝導性のある材料（銅板の仕切り板１７）が用いられ、主冷用保冷材１１及びバックアップ用保冷材１５を内側に収納して囲むように保冷用ウレタンなどの断熱材で覆われている。【選択図】 図１