The present invention relates to a barrier that prevents an infant from hitting a window and shatters the glass of the window. More specifically, the infant is impacted from the bottom of the inner surface of the window to prevent the infant from having a low recognition ability of the object. It relates to a child protection barrier of the window to detachably fix the air barrier to a height that can be applied to prevent a fatal accident, formed in the form of a box having an opening 14 on the top, a plurality of bolts on the front The hole 11 is formed, the air inlet hole 12 is formed on one side of the front. Steps 13 are formed on the rear side to be seated on the upper end of the front side of the inner frame 4 of the window frame 1, and the housing 10 for fixing the bolts 15 in the state where the step 13 is seated on the inner frame 4. ); The cover plate 28 is formed to block the opening 14 to the same size as the opening 14 of the housing 10, and a plurality of pleats 21 are formed at the bottom of the cover plate 28. The air suction space is formed inside the wrinkle part 21, and a fixing part 22 is integrally formed with the wrinkle part 21 at the lower end of the wrinkle part 21, and on one side of the fixing part 22. The air inlet 24 is formed, the air blocking film 20 is fixed to the vacuum suction port 25 on the upper surface of the cover plate 28; characterized in that consisting of.;Infant, air barrier, housing, cover plate, vacuum suction
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