KR20090053086A - Ventillation device to be installed for windows - Google Patents

Abstract

The present invention is a window mounted ventilation apparatus, located on the interior side, having a plurality of inner ventilation openings on the side, the upper frame and the lower surface is suitable for engaging the upper frame of the window and the window glass is combined with the window glass A first frame having a lower frame suitable for the following; A rotatable flap having a hinge portion; A second frame detachably coupled with the first frame between an outer lower end of the upper frame and an outer upper end of the lower frame, the second frame having a plurality of outer vents on side surfaces; A lifting member movable up and down to rotate the flap; A support member having a space for the lifting member to rise and fall; And an opening and closing member connected to a lower end of the elevating member to move the elevating member up and down, wherein the first frame has a hinge accommodating portion for accommodating the pivotable flap therein, and the opening and closing member is It is provided on the lower surface of the window.

Ventilation device, opening and closing member

Description

VENTILLATION DEVICE TO BE INSTALLED FOR WINDOWS}

The present invention relates to a window installation type ventilation device. More specifically, the present invention is provided on the upper portion of the window in the conventional window-mounted ventilator and provides an opening and closing member such as a switch for opening and closing the ventilator on the lower surface of the window frame, ease of opening and closing of the ventilator and convenience of use. The present invention relates to a window-mounted ventilator for providing a castle.

In general, a home or an office opens a window for a certain period of time for ventilation of indoor air or uses a separate ventilation device to perform ventilation. However, in the case of ventilation using the opening and closing of windows, a significant energy loss occurs in summer or winter due to the outflow of the cooled or heated indoor air, and additional cooling or heating costs for cooling or heating the introduced air again. Problems occur.

On the other hand, in the case of ventilating using a separate ventilator, it is more convenient than the case of ventilation using the opening and closing of a window. The cost of additional facilities and additional costs for the use of power energy are rarely used due to this economic burden, especially in ordinary households.

In another prior art for solving the above problem, a small ventilation device detachably mounted inside the window frame is used. Such a prior art ventilator is shown in FIGS. 1A and 1B.

More specifically, Figure 1a is a perspective view showing a part of the window-mounted ventilator installed on top of the window according to the prior art, Figure 1b is a side cross-sectional view schematically showing a cross section of the ventilator shown in Figure 1a. 1A and 1B, a window-mounted ventilator 100 according to the prior art is provided between a window glass 110 and an upper frame 120 of a window. Such a window-mounted ventilator 100 is located on the indoor side and has a plurality of inner vents 132 on the side, the first upper frame 134 suitable for engaging the upper frame 120 of the window. And a first frame 130 having a first lower frame 136 suitable for engaging with the window glass 110. A flap 140 that includes a hinge portion 142 and is rotatable; Located on the outdoor side opposite to the first frame 130, the upper surface has a second upper frame 152 suitable for engaging with the upper frame 120 of the window, the rotatable flap 140 therein A second frame 150 having a hinge receiving portion 154 capable of receiving a lid; And an opening and closing member 160 connected to a portion of the lower end of the flap 140 to rotate the flap 140. An outer vent 146 is provided between the lower end of the second frame 150 and the first lower frame 136 of the first frame 130. Here, the outer vent 146 may be an empty space or may be provided as a separate frame or plate having a ventilator of the same or similar form as the inner vent 132. The flap 140 is placed in the open position and the closed position by rotating the handle 162 of the opening and closing member 160 up or down, thereby opening and closing the ventilator 100.

As described above, the upper ventilator 100 for the window according to the prior art shown in Figures 1a and 1b in consideration of the height of the window, since the opening and closing member 160 is typically provided at a position of 2m or more, ordinary people In this case, it is impossible to directly use the opening and closing member 160 because it does not touch the opening and closing member 160, or there is a problem in that it is inconvenient because a chair or the like must be used to use the opening and closing member 160.

In order to solve such a problem, a method of opening or closing the opening and closing member 160 by connecting a string or connecting a rod to the opening and closing member 160 is used, but even in this case, the window is exposed because the strap or bar is exposed to the inside of the window. In the case of opening and closing, there was a problem not only inconvenient but also aesthetically. In particular, in the case of using a blind in a window, the above-mentioned problem becomes more serious because it overlaps with the strap and bar for adjusting the inclination and height of the blind.

Therefore, there is a need for a new window installation ventilator for solving the problems of the window installation ventilator 100 of the prior art described above.

The present invention is to solve the problems as described above, the object of the conventional window installation type ventilation apparatus by providing an opening and closing member provided on the upper window on the lower middle of the window frame to facilitate opening and closing and convenient It is to provide a window mounted ventilation device that can be used easily.

According to a feature of the present invention for achieving the above object, in the window-mounted ventilator, located on the indoor side, having a plurality of inner ventilation openings on the side, the upper surface is suitable for engaging with the upper frame of the window A first frame having a frame and a lower frame adapted to engage the window glass; A rotatable flap having a hinge portion; A second frame detachably coupled with the first frame between an outer lower end of the upper frame and an outer upper end of the lower frame, the second frame having a plurality of outer vents on side surfaces; A lifting member movable up and down to rotate the flap; A support member having a space for the lifting member to rise and fall; And an opening and closing member connected to a lower end of the elevating member to move the elevating member up and down, wherein the first frame has a hinge accommodating portion for accommodating the pivotable flap therein, and the opening and closing member is It is to provide a window mounted ventilation device provided on the lower surface of the window.

Further advantages of the present invention will become apparent from the following description with reference to the accompanying drawings in which like or like reference numerals designate like elements.

Window installation type ventilation apparatus of the present invention is achieved the following advantages.

1. The opening and closing member is provided on the middle part or the lower part of the window frame, so the opening and closing of the window installation type ventilation device is easy.

2. Since the opening and closing member is provided on the middle part or the bottom of the window frame, there is no need to use a chair or the like to use the opening and closing member.

3. Unlike the prior art in which a separate strap is connected to the opening or closing member or the bar is connected in an exposed state, the use of a separate strap or bar is not necessary, and a lifting member connected to the opening and closing member has a window frame. As it is used internally, it is also good in appearance.

4. It is easy to open and close the window installation ventilator even when the window blind is used.

Hereinafter, a ventilator according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2a is a perspective view showing a part of the ventilation device installed on the upper portion of the window according to the present invention, Figure 2b is the outer frame (second frame) and the lifting member of the window installation type ventilation device of the present invention shown in Figure 2a is removed Is a perspective view showing a part of the ventilator when the rotatable flap is in the closed position, and FIG. 2C shows an outer frame (second frame) and a lifting member of the window-mounted ventilator of the present invention shown in FIG. 2A. A perspective view showing a part of the ventilator when the rotatable flap in the removed state is in the open position, and FIG. 2D is an outer frame (second frame) of the window-mounted ventilator of the present invention shown in FIGS. 2B and 2C. Fig. 2E is a side sectional view showing the ventilation device in the closed position and the open position of the rotatable flap in the coupled state, and Fig. 2E is a window-mounted ventilation device of the present invention shown in Fig. 2A. An exploded perspective view of the lifting member is accommodated between the lifting member receiving portion and the groove portion through the support member, Figure 2f is a view schematically showing a coupling relationship between the lifting member and the flap and the groove portion of the first frame. 2g is a schematic perspective view of the elevating member, FIG. 2h is a detailed view of the folded portion A of the elevating member shown in FIG. 2g, and FIG. 2i is a view of the elevating member shown in FIG. FIG. 2J is a perspective view schematically illustrating an opening and closing member connected to a lower vertical bar of the elevating member. Referring to FIG.

2A to 2J, the window-mounted ventilator 200 of the present invention is provided between the window glass 110 shown in FIG. 1 and the upper frame 120 of the window as in the prior art. Such a window-mounted ventilator 200 is located on the indoor side, and has a plurality of inner vents 232 on the side, and an upper frame suitable for engaging the upper frame 120 (see FIG. 1) of the window. A first frame 230 having a lower frame 236 suitable for engaging 234 and the bottom surface with the window glass 110 (see FIG. 1); A rotatable flap 240 having a hinge portion 242; A second removably coupled with the first frame 230 between an outer lower end of the upper frame 234 and an outer upper end of the lower frame 236 and having a plurality of outer vents 252 on the side; Frame 250; An elevating member 260 movable up and down to rotate the flap 240; A support member 270 having spaces 273a and 273b for the lifting member 260 to rise and fall; And an opening / closing member 310 connected to a lower end of the elevating member 260 to move the elevating member 260 up and down. The first frame 230 has a hinge receiving portion 238 that can accommodate the rotatable flap 240 therein. In the window-mounted ventilator 200 of the present invention having the above-described configuration, the opening and closing member 310 may be provided on a window (frame) bottom surface. Hereinafter, each component constituting the window installation type ventilation apparatus 200 of the present invention described above and the coupling relationship of these components will be described in detail.

Referring again to FIGS. 2A to 2J, in the window installing type ventilation device 200 of the present invention, the hinge part 242 of the flap 240 is provided to the hinge receiving part 238 provided inside the first frame 230. Can be received and rotated. On the other hand, when the flap 240 rotates from the open position as shown in FIG. 2C to the closed position shown in FIG. 2B, the hinge portion 242 of the flap 240 and the hinge receiving portion of the first frame 230 are shown. Due to the presence of friction between 238 or other foreign matter, the flap 240 may not be properly closed. To alleviate or reduce this problem, one or more springs 239 are mounted in the upper frame 234. One or more springs 239 have an elastic force (ie, restoring force) that contacts the outer surface of flap 240 and applies a force in the closed position direction of flap 240. However, the use of one or more of the springs 239 described above is optional and does not necessarily have to be used.

In addition, the flap 240 illustrated in FIGS. 2B and 2C includes a yaw of the first frame 230 formed to face the elevating member receiving part 244 and the elevating member receiving part 244 that accommodate the elevating member 260. One or both of the grooves 231 may be provided with a rubber material or an elastic material to prevent noise caused by a collision between the elevating member accommodation part 244 and the recess 231 when the flap 240 is opened or closed. Members (not shown) may be provided. The use of such a cushioning member (not shown) is also an optional feature and is not necessarily required.

Referring to FIG. 2D, when the flat 240 is in the closed position (vertical direction), the plurality of inner ventilation holes 232 are blocked by the flat 240 and the plurality of outer ventilation holes 252 to block the ventilation. On the other hand, when the flat 240 is in the open position (inclined direction), the plurality of inner vents 232 communicate with the plurality of outer vents 252 to allow ventilation. As can be seen in FIG. 2D, the second frame 250 may be detachably coupled to the first frame 230 by, for example, an upper screw 254 and a lower screw 256.

Referring to FIG. 2E, it is an exploded perspective view illustrating that the lifting member 260 is accommodated between the lifting member accommodating part 244 and the recess 231 through the supporting member 270. More specifically, the elevating member 260 is flap through the support member 270 composed of the first support member 272 and the second support member 274 snapped to the first support member 272. The lifting member accommodating part 244 of the 240 is accommodated between the recess 231 of the first frame 230. To this end, the first supporting member 272 and the second supporting member 274 are provided with a first space 273a and a second space 273b that are capable of raising and lowering the elevating member 260, respectively. Although the first support member 272 and the second support member 274 are shown as separate components in the embodiment of FIG. 2E, the first support member 272 and the second support member 274 are one of those skilled in the art. It will be appreciated that it may be provided as an integral support member. In addition, the guide groove 276 for preventing the left and right movement or the lateral direction (that is, the direction away from the second support member 274) during the vertical movement of the elevating member 260 to the lower middle portion of the second support member 274. Is preferably provided. The guide groove 276 has a semicircular guide groove therein, and may be composed of two pieces in which the middle portion is cut in the vertical direction.

2F and 2G, the elevating member 260 is accommodated between the elevating member receiving portion 244 of the flap 240 and the recess 231 of the first frame. To this end, the elevating member 260 has a horizontal bar 261, a convex bending portion 262 provided at one side of the horizontal bar 261, and a slant extension extending from the convex bending portion 262. 263, vertical bars 264 and 265 provided on the other side of the horizontal bar 261 (see FIG. 2G). The horizontal bar 261 of the elevating member 260 moves up and down within the first and second spaces 273a and 273b of the supporting member 270 illustrated in FIG. 2E. In addition, the convex bent portion 262 of the elevating member 260 is accommodated between the elevating member receiving portion 244 of the flap 240 shown in FIG. 2F and the recess 231 of the first frame. When the elevating member 260 is raised, the flap 240 rotates to the open position while the inclined extension portion 263 is raised in the elevating member accommodation portion 244 of the flap 240. Thereafter, when the elevating member 260 descends, the flap 240 rotates to the closed position while the inclined extension portion 263 descends within the elevating member accommodation portion 244 of the flap 240. When the elevating member 260 is lowered to the minimum height, the convex bent portion 262 is placed in a position accommodated between the elevating member receiving portion 244 and the recess 231.

2G to 2I, the vertical bars 264 and 265 of the elevating member 260 preferably include an upper vertical bar 264 and a lower vertical bar 265. The lifting member 260 is preferably made of a metal material. However, those skilled in the art will fully understand that the elevating member 260 may be a rigid body of any material. The upper vertical bar 264 and the lower vertical bar 265 of the elevating member 260 are foldably connected by a connecting member 267 such as a rivet or the like (see FIG. 2H). For example, the upper vertical bar 264 and the lower vertical bar 265 may be connected to each other by the first protrusion 268 of the upper vertical bar 264 between the two second protrusions 269 of the lower vertical bar 265. The second protrusion 269 of the lower vertical bar 265 may be connected by the connecting member 267, or the first protrusion 268 of the upper vertical bar 264 may be connected by the connecting member 267. It may be. In this case, the lower vertical bar 265 may be rotated by 90 ° to be accommodated into the lower frame 236 shown in FIG. 2A. Accordingly, when the vertical bars 264 and 265 are formed of the upper vertical bar 264 and the lower vertical bar 265, the lifting members 260 are transported to an assembly place for assembling the window-mounted ventilator 200 of the present invention. It is convenient. However, the vertical bars 264 and 265 consisting of the upper vertical bar 264 and the lower vertical bar 265 as shown in FIGS. 2G to 2I are exemplary, and those skilled in the art will appreciate that the vertical bars 264 and 265 may be provided as integrated vertical bars. I can understand enough. The lower end 266 of the lower vertical bar 265 is connected to the opening and closing member 310 shown in FIG. 2J.

Referring to FIG. 2J, the elevating member 260 illustrated in FIG. 2G is connected to the opening and closing member 310 through the lower end 266 of the lower vertical bar 265. The length of the elevating member 260 may be appropriately adjusted according to the size of the window or window frame. In addition, the elevating member 260 may be adjusted up and down height by the vertical movement of the switch member 310, the convex bending portion 262 and the inclined extension portion 263 in accordance with the vertical height adjustment of the elevating member 260. Rotation of the flap 240 is controlled. Hereinafter, the configuration and coupling relationship of the elevating member 260 and the opening and closing member 310 will be described in detail.

FIG. 2K illustrates the handle of the opening member, the second connecting member, the moving member, the lower plate provided with the position control member of the moving member, and an operation relationship thereof when the opening / closing member shown in FIG. 2F is seen from the right direction. 2L is a perspective view showing an upper plate (or cover plate) provided to engage with the lower plate on the lower plate shown in FIG. 2K when the opening / closing member shown in FIG. 2J is viewed from the rear direction.

2K and 2L, the lower end 266 of the lower vertical bar 265 of the elevating member 290 is connected to the moving member 340 provided on the lower plate 330. More specifically, the upper end of the movable member 340 is formed with a lower end receiving portion 341 for receiving the lower end 266 of the lower vertical bar 265, the lower end ( 266 and the lower end receiving portion 341 are fastened by the locking member 292. On the other hand, the handle 320 of the opening and closing member 310 is provided with a first fastening member 322 composed of the first and second protruding members (322a, 322b). A first accommodation space 324 is formed between the first and second protrusion members 322a and 322b. In addition, the moving member 340 is corresponding to the first fastening member 322 of the handle 320, the third to the fifth protruding member (342a, 342b, 342c) on one side (left side in the case of Figure 2k) It is provided with a second fastening member 342 composed of. The second accommodating space 344a and the third accommodating space 344b between the third protruding member 342a and the fourth protruding member 342b and between the fourth protruding member 342b and the fifth protruding member 342c, respectively. This is provided. The first and second protruding members 322a and 322b of the handle 320 are accommodated in the second accommodating space 344a and the third accommodating space 344b of the movable member 340, respectively, and the movable member 340 is also provided. The fifth protruding member 342c of the handle 320 is accommodated in the first receiving space 324 of the handle 320, thereby the first fastening member 322 of the handle 320 and the second fastening member 342 of the movable member 340. ) Are combined in a snap coupling manner.

On the other hand, on the lower plate 330, when the moving member 340 moves up and down by the handle 320, a pair of first guide members 346a and 346b for guiding the vertical movement of the moving member 340 and one A pair of second guide members 348a and 348b are provided. The pair of first guide members 346a and 346b are spaced apart by a predetermined distance so as not to disturb the vertical movement of the second fastening member 342. In addition, the pair of second guide members 348a and 348b are spaced apart by a predetermined distance so as not to interfere with the operation of the position control member 350 of the moving member 340. To this end, the other side (right side in FIG. 2K) of the moving member 340 includes a plurality of recesses 349a, 349b, and 349c interacting with the position control member 350. The position control member 350 has a ball bearing or an elastic protruding member (not shown) therein so that the movable member 340 is intermittently at the positions of the plurality of recesses 349a, 349b, and 349c. Control to stop. In the embodiment illustrated in FIG. 2K, the plurality of grooves 349a, 349b, and 349c of the moving member 340 are illustrated as three, but this is merely an example, and a person skilled in the art may increase or decrease the number of grooves as necessary. You will understand enough. The rotation angle of the flap 240 may be controlled according to the number and positions of the recesses 349a, 349b, and 349c. In addition, in the embodiment shown in Figure 2g, the moving member 340 shown in the center shows a case in which the handle 320 is moved upwards, the moving member 340 shown on the right is the handle 320 It can be seen that shows the case where is moved to the bottom.

In addition, the upper plate (or cover plate) 360 shown in FIG. 2L may be coupled to the lower plate 330 shown in FIG. 2K using a snap coupling method or a separate fastening member (not shown) such as a screw. have.

Figure 3 is a front view showing that the opening and closing member of the window installation type ventilation apparatus provided in the window according to the present invention is provided on the left middle portion or the lower end of the window frame.

Referring to FIG. 3, the opening / closing member 310 of the window installation type ventilation apparatus 200 provided in the window 300 according to the present invention is provided on the middle portion or the lower portion of the left window frame 302. Position control member of the support member 270, the elevating member 260, the moving member 340, the moving member 330 of the components of the window installation type ventilation apparatus 200 of the present invention shown in Figure 2a to 2l ( 350, the lower plate 330, and the upper plate 360 are all installed inside the left window frame 302. Therefore, since only the opening / closing member 310 having the handle 320 is provided on the middle portion or the lower end portion of the window frame 302, opening and closing of the ventilation device is easy, convenient to use, and good in appearance.

Although the window-mounted ventilator 200 of the present invention described above illustrates and describes the case where the opening and closing device 310 is provided on the middle portion or the lower end of the left window frame 302, the opening and closing device 310 is the right window. The same applies to the case of the window-mounted ventilator 200 provided on the middle part or the bottom of the mold 302.

In addition, although the window-mounted ventilation apparatus 200 of the present invention described above is described as being used for a window, this is also illustrative, and an object (for example, a wall, a ceiling, etc.) that requires any ventilation other than the window. It is obvious that it can also be applied to).

As various modifications may be made to the constructions and methods described and illustrated herein without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings be exemplary, and not intended to limit the invention. It is not. Therefore, the scope of the present invention should not be limited by the above-described exemplary embodiments, but should be defined only in accordance with the following claims and their equivalents.

Figure 1a is a perspective view showing a part of the window installation type ventilation apparatus installed on the upper portion of the window according to the prior art.

Figure 1b is a side cross-sectional view schematically showing the cross section of the window installation type ventilation apparatus shown in Figure 1a.

Figure 2a is a perspective view showing a part of the window installation ventilation device installed on the upper part of the window according to the present invention.

FIG. 2B is a perspective view showing a part of the ventilation device in the case where the rotatable flap is in the closed position in the state in which the outer frame (second frame) and the elevating member are removed from the window-mounted ventilation device shown in FIG. 2A; FIG. .

FIG. 2C is a perspective view showing a part of the ventilation device in the case where the rotatable flap is in the open position in the state in which the outer frame (second frame) and the elevating member are removed from the window installation type ventilation device shown in FIG. 2A; FIG. .

FIG. 2D is a side showing the ventilation device in the closed position and the open position of the rotatable flap in the state where the outer frame (second frame) is coupled among the window-mounted ventilation devices shown in FIGS. 2B and 2C; It is a cross section.

Figure 2e is an exploded perspective view showing that the lifting member is accommodated between the lifting member receiving portion and the recess through the support member of the window installation type ventilation apparatus of the present invention shown in Figure 2a.

2F is a view schematically illustrating a coupling relationship between the elevating member, the flap, and the recess of the first frame.

2G is a schematic perspective view of the elevating member.

Figure 2h is a view showing in detail the folded portion (A) of the elevating member shown in Figure 2g.

FIG. 2I is a view showing a specific example of the folded portion A of the lifting member shown in FIG. 2G.

Figure 2j is a perspective view schematically showing an opening and closing member connected to the lower vertical bar of the elevating member.

FIG. 2K illustrates the handle of the opening member, the second connecting member, the moving member, the lower plate provided with the position control member of the moving member, and an operation relationship thereof when the opening / closing member shown in FIG. 2F is seen from the right direction. Perspective view.

FIG. 2L is a perspective view showing an upper plate (or cover plate) provided to engage the lower plate on the lower plate shown in FIG. 2K when the opening / closing member shown in FIG. 2J is seen in the rear direction.

Figure 3 is a front view showing that the opening and closing member of the window installation type ventilation apparatus provided in the window according to the present invention is provided on the left middle portion or the lower end of the window frame.

Claims (12)

In the window installation type ventilation apparatus, Located on the interior side, the first side having a plurality of internal ventilation holes on the side, the first side having a top frame suitable for engaging the upper frame of the window and the bottom frame suitable for engaging the glass for the window frame; A rotatable flap having a hinge portion; A second frame detachably coupled with the first frame between an outer lower end of the upper frame and an outer upper end of the lower frame, the second frame having a plurality of outer vents on side surfaces; A lifting member movable up and down to rotate the flap; A support member having a space for the lifting member to rise and fall; And An opening / closing member connected to the lower end of the elevating member to move the elevating member up and down Including, The first frame has a hinge receiving portion for receiving the rotatable flap therein, The opening and closing member is provided on the lower surface of the window Window mounted ventilation. The method of claim 1, And one or more springs mounted in the upper frame and having one or more springs in contact with an outer surface of the flap and for applying a force in a closed position direction of the flap. The method of claim 1, The flap is provided with a lifting member receiving portion for receiving the lifting member, The first frame has a groove formed to face the lifting member receiving portion, One or both of the elevating member accommodating portion and the recess are provided with a cushioning member. Window mounted ventilation. The method of claim 2, The flap is provided with a lifting member receiving portion for receiving the lifting member, The first frame has a groove formed to face the lifting member receiving portion, One or both of the elevating member accommodating portion and the recess are provided with a cushioning member. Window mounted ventilation. The method according to any one of claims 1 to 4, The support member is composed of a first support member and a second support member coupled to the first support member in a snap manner, The first support member and the second support member each have a first space and a second space capable of raising and lowering the elevating member. Window mounted ventilation. The method of claim 5, The first support member and the second support member are provided as one integrated support member, The first space and the second space is provided as one space Window mounted ventilation. The method of claim 5, The support member is a window-mounted ventilator further comprises a guide groove for preventing the left and right movement or the lateral movement during the vertical movement of the elevating member on the outer portion. The method according to any one of claims 1 to 4, A window installation type ventilation device, wherein the elevating member is made of metal. The method according to any one of claims 1 to 4, The lifting member is Horizontal bar; A convex bending portion provided on one side of the horizontal bar; A slant extension extending from the convex flexure; And Vertical bar provided on the other side of the horizontal bar Window-mounted ventilator comprising a. The method of claim 9, The vertical bar is composed of an upper vertical bar and a lower vertical bar, the upper vertical bar and the lower vertical bar is a window installation type ventilation apparatus is foldable connected by a predetermined connecting member. The method of claim 9, The opening and closing member is handle; A moving member coupled to the handle and the lower end of the vertical bar, respectively, in a fixed manner and moving the vertical bar up and down according to the vertical movement of the handle; A position control member controlling the position of the movable member; A lower plate provided with the moving member and the position control member; And An upper plate provided to engage the lower plate Including, The lower plate includes a pair of first guide members spaced apart from each other and a pair of second guide members spaced apart from each other to guide the vertical movement of the movable member. Window mounted ventilation. The method of claim 11, The movable member includes a plurality of recesses on one side thereof, and the position control member includes a ball bearing or an elastic protruding member therein, such that the position control member moves at the positions of the plurality of recesses. Window-mounted ventilation to control the member to stop intermittently.

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