| 摘要 |
PURPOSE:To discharge air of high temperature to the room so as to increase the heat exchange efficiency and to prevent rainwater and broken pieces of a light permeating plate from falling onto the upper vent port even when the light permeating plate is broken, by covering the upper vent port of a heat collecting plate which is disconnected in the vicinities of upper and lower vent ports, with an auxiliary heat collecting plate provided on the heat collecting plate. CONSTITUTION:The heat collecting plate 5 which is broken off at its upper and lower vent ports 3 and 4, is accommodated within a base box 2, and the upper vent port 3 is covered with the auxiliary heat collecting plate 9 provided upwardly of the heat collecting plate 3. Air incoming from the lower vent port 4 is uniformly branched to the upper and lower parts of the heat collecting plate 5 while passing through the lower disconnected part 8, and can be heat-exchanged with the heat collecting plate 5 by the solar heat received by the heat collecting plate 5. Accordingly, air is further heated by the heat exchange with the auxiliary heat collecting plate 9, and air of high temperature can be discharged through the upper vent port into the room. Further, since the upper vent port 3 is covered with the auxiliary heat collecting plate 9, it is made possible to prevent rainwater and broken pieces of the light permeating plate 12 from falling onto the upper vent port 3 when the light permeating plate 12 is broken. |
