Abstract: Disclosed is an automatic closing louver device for fire protection including: a controller having a front surface fixing bar, a rear surface fixing bar, a body open at the lower portion thereof and having a fuse chamber formed at the inside of the lower portion thereof, and an elastic body; plate-like blades each having a blade rotating shaft protrudedly formed on both ends thereof and a lower portion rotatably coupled to the top portion of the body by means of hinge parts; and an outer frame having a front surface plate, a rear surface plate, and two side surface plates, wherein if flames come into contact with the fuse, the fuse is broken and the coupled portion between the rear surface fixing bar and the body moves forwardly by means of the elastic body, so that the blades are rotated and closed to form a fire protection wall.

Abstract: The present invention provides an automatically closed fire protection louver device, which is installed on a window or the like in an apartment building without a balcony function or in a curtain wall type building structure to adjust natural lighting and automatically block spread of flames to an upper floor without using electrical energy when a fire breaks out.

Abstract: The present invention provides an automatically closed fire protection louver device, which is installed on a window or the like in an apartment building without a balcony function or in a curtain wall type building structure to adjust natural lighting and automatically block spread of flames to an upper floor without using electrical energy when a fire breaks out.