| 主权项 |
1. A ventilation device, comprising:
a base, having a ring portion, an outer tube portion, a first inner tube portion, and a second inner tube portion, the ring portion is hollow, the outer tube portion is extended from a center of the ring portion downwardly and communicated therewith, the first inner tube portion is extended from the center of the ring portion upwardly and communicated therewith, the second inner tube portion is extended from one end of the first inner tube portion upwardly distant from the ring portion, a first detecting point and a second detecting point are arranged at the first inner tube portion and angularly spaced apart from each other, and the first detecting point and the second detecting point are reed switches; a tube member, rotatably and axially movably plugged in the center of the base, a plurality of airflow holes are arranged at a bottom end of the tube member, a holding portion is extended from the bottom of the tube member downwardly, and a first indicator light and a second indicator light are arranged inside the holding portion; a fan assembly, plugged in the tube member, and an extendable rod is protruded from the fan assembly upwardly; a cap, detachably connected with the base and disposed on the base, the cap is covered the tube member and the fan assembly, the cap has a cavity for receiving a rechargeable battery electrically connected to the fan assembly and an external power source; a proximity switch, arranged at an upper end of the tube member distant from the first indicator light and the second indicator light; and a solar panel, arranged at an upper surface of the cap and electrically connected to the rechargeable battery through an electrode arranged on the cap; wherein the external power source is supplying power for providing the indoor lighting use while long-term overcast sky or insufficient power supplies of the solar panel; and wherein the proximity switch is arranged corresponding to the second inner tube portion of the base while in a shut-down status; the tube member is partially pulled out through the holding portion so as to be corresponding to the first inner tube portion and the proximity switch is turned to correspond to the first detecting point to activate the fan assembly to rotate in a first rotating direction and light up the first indicator light so as to ventilate air from outdoors to indoors while in an intake status; the tube member is partially pulled out downwardly through the holding portion so that the proximity switch is corresponding to the first inner tube portion of the base and turned to be corresponding to the second detecting point to activate the fan assembly to rotate in a second rotating direction different from the first rotating direction and light up the second indicator light so as to ventilate air from indoors to outdoors while in an exhaust status. |
