The subject innovation is first that relates to a louver, a hollow rod-shaped and ball is formed through on one side, a and yet another one the longitudinal direction of the predetermined interval on the side forming the plurality of coupling holes, the guide projection is formed on the inner surface and one body; A second body coupling hole coupled with the holes facing each other of the first body are formed to be arranged in the first body and the upright; A square bar-like and a guide groove formed on the front surface, the guide groove and the opposite rear surface and the fixed gear on the left side which grooves are formed, and the gear fix the first gear of the strip-like in the second guide gear is combined; Is inserted into the through hole of the rod-like rotation axis one end of the first body of said rotating shaft and one end of the first gear and a gear engaged with the rotation protrusion formed adjacent to, the operation which the handle is fixed fitted to one end of the rotary shaft forming part .; A plurality of barrier film of the plate shape and protrudes from the central portion of each of the blocking one end of the second gear and coupled stone that is fit rotary gear are formed interlocking portions are coupled to the coupling hole of the first body, the other end protruding from the central portion It consists of; the blades are attached stone portion is formed to be coupled to the coupling hole of the second body.
Louver according to the present invention is able to open and close the plurality of blades at the same time, it is possible to finely adjust the angle of the blade, by a simple coupling structure can simplify the replacement of the blade.