Airflow device

Abstract

This invention provides an airflow device that allows for easy visual confirmation of negative pressure conditions, such as those found in negative pressure rooms. [Solution] The airflow device 1 is installed in an opening formed in a partitioning means that divides a space within a building, and is a device that allows visual confirmation of the pressure difference between two spaces partitioned by the partitioning means. The airflow device 1 also comprises a frame 10, a shaft provided at the top of the frame 10, and blades rotatably mounted inside the frame 10 via the shaft, the blades which rotate from the upstream side to the downstream side or from the downstream side to the upstream side when a pressure difference occurs between the two spaces, an air guide section 13, and a blocking section. Inside the frame is a display section 14 that is visible to the user, and the display section 14 changes in visibility as the blades rotate. The upstream opening surface 10a and the downstream opening surface 10b of the frame 10 are provided with a grid consisting of multiple rod-shaped bodies 30, 40.

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