VENTILATOR FOR SHELTER BOX

摘要

PURPOSE: A shelter box, capable of the prevention of the inflow of the air and bacteria contaminated by biochemical substance and radioactivity, is provided to maintain a clear and high quality of communications state by blocking electromagnetic wave when the external air flows in the shelter box. CONSTITUTION: A shelter box comprises a positive pressure member and a shielding member(10). The positive pressure member comprises a case, a vacuum generator, an outside filter and an inflow path. The case is combined outside a shelter box(1). The vacuum generator is located on the case and guides external air. The outside filter guides and filters the external air which is connected to the vacuum generator. The inflow path transfers the external air which is connected to the output terminal of the outside filter to deliver the filtered external air to the inside of the shelter box.