JP2012023968A - Ventilation device for plastic greenhouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve an attachment work of a net to spread facing to the ventilation opening with regards to an improvement of a ventilation device for a plastic greenhouse for ventilating the plastic greenhouse through the ventilation inlet.SOLUTION: The ventilation device includes: a ventilation frame 1 forming the ventilation inlet in the plastic greenhouse in which a sheet S is spread; an inner frame 2 wherein a net N is spread detachably installed at the ventilation frame 1; and a window frame 3 wherein the sheet S1 is spread by pivotally attached at the ventilation frame 1. The ventilation inlet is opened/closed by sliding the window frame 3 while the inner frame 2 is installed at the ventilation frame 1.

Description

  The present invention relates to a ventilator for a greenhouse that is provided on a wife surface, a roof surface, a side surface, or the like of a greenhouse that is used to grow crops, horticultural plants, and the like and ventilates the inside of the greenhouse.

  In general, the above-mentioned greenhouse is used to maintain the temperature and humidity in the greenhouse appropriately and prevent the invasion of pests and harmful beasts, thereby adjusting the growth environment of crops and horticultural plants.

  And the ventilator for greenhouses which ventilates the inside of a greenhouse is provided in the wife surface, roof surface, side surface, etc. of the said greenhouse, and various proposals are made | formed as this ventilator for greenhouses.

  For example, as shown in FIG. 3 of Patent Document 1, a ventilation apparatus for a greenhouse disclosed in Patent Document 1 is provided with a ventilation frame that forms a ventilation opening in a greenhouse in which a sheet is stretched, and a pivot on the ventilation frame. And a rectangular window frame on which the sheet is stretched.

  And the net | network which can permeate | transmit air while obstructing the penetration | invasion of a pest and a harmful animal is extended in the said ventilation frame.

  By providing the above configuration, the greenhouse ventilation device ventilates the greenhouse while preventing the invasion of pests and harmful animals by opening and closing the ventilation opening by rotating the window frame. Is possible.

JP 2006-254778 A

  In the above-mentioned conventional greenhouse, it is possible to ventilate through the ventilation opening and prevent the invasion of pests and pests by extending a net in the ventilation frame, but the following improvements are required. .

  That is, the ventilating port is generally provided at a high place such as the upper side of the doorway and the roof surface of the wife surface in the greenhouse.

  Therefore, in the structure of a conventional greenhouse ventilation device that directly stretches the net at the ventilation port, it is difficult to attach and detach when the net is replaced or cleaned, or to stretch the net without slack.

  Therefore, an object of the present invention is to provide a ventilation device for a greenhouse that can improve the above-described problems and facilitate the work of attaching / detaching a net to / from the ventilation frame and the work of extending the net.

  Means for solving the above-mentioned problems are: a ventilation frame that forms a ventilation opening in a greenhouse in which a sheet is stretched; an inner frame that is detachably attached to the ventilation frame and a net is stretched; and the ventilation frame And a window frame on which the seat is extended, and with the inner frame mounted on the ventilation frame, the window frame is swung to open and close the ventilation opening.

  In this case, the ventilation frame is formed in a rectangular shape by arranging one long support ventilation frame on which the window frame is pivotally attached and three long ventilation frames on the top, bottom, left and right. The supporting ventilation frame body corresponds to the upper side of the ventilation frame, and is formed along the longitudinal direction of the front side and has a dovetail groove portion having a dovetail groove to which the sheet is fixed, and is continuously provided along the lower end of the dovetail groove portion. And a support portion that swingably supports the window frame, and an engagement portion that is provided on the back side of the support portion along the longitudinal direction and has an engagement groove that engages with the inner frame. It is preferable.

  Further, the three ventilation frame bodies correspond to the lower side, the left side and the right side of the ventilation frame, and are formed along the front side longitudinal direction and have a dovetail groove portion to which the sheet is fixed, and the dovetail groove portion of the dovetail groove portion. It is preferable to include an L-shaped piece having an L-shaped cross section that is provided along the longitudinal direction, and the L-shaped piece is disposed toward the inside of the ventilation frame.

  Furthermore, it is preferable to provide an inclined piece inclined toward the front side from the dovetail portion to the L-shaped piece at the boundary between the dovetail portion and the L-shaped piece in the ventilation frame.

  Further, in the above case, the inner frame is formed in a rectangular shape by arranging four long inner frames on the top, bottom, left and right, and the inner frame is formed on the net along the front longitudinal direction. A U-shaped groove portion in which a U-shaped groove is fixed, and a flat plate piece continuous in the longitudinal direction along the inner end of the U-shaped groove portion. It is preferable that the U-shaped groove portion of the inner frame corresponding to the upper side is engaged with the engagement groove of the support ventilation frame.

  And it is preferable that the inner frame is clipped by overlapping the flat piece of the inner frame corresponding to the lower side, the left side or the right side of the inner frame on the front side of the L-shaped piece of the ventilation frame. .

  Further, in the above case, the window frame has a rectangular shape in which one long hooking window frame pivotally attached to the ventilation frame and three long window frame bodies are arranged vertically and horizontally. The hooking window frame body is formed and corresponds to the upper side of the window frame, and is formed along the front longitudinal direction and has a dovetail groove portion having a dovetail groove to which the sheet is fixed, and along the upper end of the dovetail groove portion. It is preferable to include a hook piece that is connected to the support portion of the support ventilation frame so as to be swingable and a flat plate piece that is provided along the lower end of the dovetail portion.

  According to the invention of claim 1, by providing an inner frame that is detachably attached to the ventilation frame and the net is extended, it is possible to pre-expand the net on the inner frame and attach it to the ventilation frame. The net can be easily attached to and removed from the ventilation frame.

  Further, it is not necessary to perform the work for expanding the net at a high place as in the prior art, and the net can be easily extended.

  In addition, since the net is stretched on the inner frame, the net is maintained in a stretched state even when the net is removed from the ventilation frame, so that the work for cleaning the net is easy.

  According to the second aspect of the present invention, since the support ventilation frame includes the support portion, the window frame can be easily pivoted to the ventilation frame with the support portion as a fulcrum.

  According to invention of Claim 3, when a ventilation frame body is equipped with an L-shaped piece, the inner frame is supported by the L-shaped piece from the back side and the window frame is closed by the window frame when the window frame is closed. It is possible to prevent the camera from falling by being pushed to the back side.

  Further, by providing the L-shaped piece, it is possible to connect the L-shaped piece to another ventilation frame body or a support ventilation frame body, and the assembly performance of the ventilation frame is improved.

  According to the invention described in claim 4, when the ventilation frame is provided with the inclined piece, the step between the lower ventilation frame and the lower window frame can be reduced when the window frame is closed. It becomes possible.

  Therefore, it is possible to reduce the load applied to the sheet when the sheet is stretched and to prevent the sheet from being damaged.

  According to invention of Claim 5, when an inner frame body is provided with a flat plate piece, it will become possible to connect with another flat plate piece using this flat plate piece, and the assembly performance of an inner frame will improve.

  Further, by engaging the U-shaped groove portion of the inner frame body with the engagement groove of the support ventilation frame body, the upper side of the inner frame can be easily fixed to the ventilation frame.

  According to the invention described in claim 6, by clipping the inner frame to the ventilation frame, it is possible to prevent the inner frame from falling and to easily attach and detach the inner frame to and from the ventilation frame.

  According to the seventh aspect of the present invention, the window frame includes the hooking window frame body, so that the hook piece is engaged with the support portion of the ventilation frame, and the window frame is swingably supported by the ventilation frame. Is easily possible.

It is a perspective view which shows partially the ventilation apparatus for greenhouses which concerns on one embodiment of this invention. It is a partial expansion perspective view which decomposes | disassembles and shows the right side ventilation frame body, clip, right inner frame body, net | network, and net fixing member in the ventilation apparatus for greenhouses which concerns on one embodiment of this invention. FIG. 3 is a partially enlarged perspective view showing a state where the right ventilation frame, the clip, the right inner frame, the net, and the net fixing member shown in FIG. 2 are assembled. In the ventilation apparatus for greenhouses which concerns on this Embodiment, it shows the state which opened the window frame, decomposes | disassembles a ventilation frame and an inner frame, and is a partial expansion perspective view which notches and shows a part of said inner frame. In the greenhouse ventilation device according to the present embodiment, it is a partially enlarged perspective view showing a state in which the ventilation frame and the inner frame are disassembled, the left and lower ventilation frames and the lower and left inner frames Some are shown. In the greenhouse ventilation device according to the present embodiment, it is a partially enlarged longitudinal sectional view showing a state in which the window frame is closed, the lower ventilation frame body, the lower inner frame body, the lower window frame body Show.

  A greenhouse ventilation device showing an embodiment of the present invention will be described below with reference to the drawings. The same reference numerals given throughout the several drawings indicate the same or corresponding parts.

  Moreover, in the following description, the surface that can be seen when facing the wife's face from the outside is the front, the direction away from the greenhouse while facing the front is the front side, and the direction approaching the greenhouse is the back side.

  A greenhouse equipped with the above ventilator for greenhouses is a farmhouse for growing crops, although not shown, a plurality of arched pipes arranged in a row, and a transparent or translucent composite stretched along the arched pipes And a resin sheet S.

  The ventilator for a greenhouse according to the present embodiment is formed on the face of the above-mentioned greenhouse, and the ventilation frame 1 that forms a ventilation opening in the greenhouse where the sheet S is stretched, and the ventilation frame 1 It comprises an inner frame 2 that is detachably mounted and the net N is extended, and a window frame 3 that is pivotally attached to the ventilation frame 1 and the sheet S1 is extended.

  The greenhouse ventilator opens and closes the ventilation opening by swinging the window frame 3 with the inner frame 2 attached to the ventilation frame 1 and opens the window frame 3 to open the ventilation opening. The inside of the greenhouse is ventilated, and the window frame 3 is closed to prevent rain or the like from entering the greenhouse.

  Below, each component of the ventilation apparatus A for greenhouses which concerns on this Embodiment is demonstrated in detail.

  As shown in FIG. 1, the ventilation opening of the greenhouse is formed inside the ventilation frame 1 attached to the face of the greenhouse, and is divided into right and left by a support column 10 provided in the approximate center of the ventilation frame 1. It becomes.

  Although not shown, the support column 10 is provided with an operation unit of an opening / closing device that opens and closes the window frame 3 on the back surface, and the opening / closing device is provided from a vertically long slit 10 a formed at the center of the support column 10. The arm 11 which protrudes and acts on the window frame 3 is provided.

  Although not shown, a roller is provided at the tip of the arm 11, and the tip of the arm 11 has a hooking window frame 7 corresponding to the upper side of the window frame 3 and a window frame corresponding to the lower side. 8 slides longitudinally along a bridging frame 30 that is bridged between the two.

  Then, by rotating the tip end of the arm 11 up and down with the operation unit, the contact position between the arm 11 and the bridging frame 30 changes, and the window frame 3 rotates to open and close the ventilation opening.

  In the above opening / closing device, since the operation portion is disposed on the back side of the support column 10, the opening / closing operation of the window frame 3 can be performed from the inside of the greenhouse.

  Further, since the bridge frame 30 is curved toward the outside of the greenhouse, the sheet S1 can be reliably spread on the window frame 3, but the configuration of the opening / closing device is appropriately selected. For example, the configuration disclosed in Patent Document 1 may be used.

  As shown in FIG. 1, a ventilation frame 1 that forms a ventilation opening on the inside includes a single long support ventilation frame 4 to which the window frame 3 is pivotally attached, and three long ventilation frames. 5 is arranged vertically and horizontally and formed into a rectangle.

  In the present embodiment, the support ventilation frame 4 corresponds to the upper side of the ventilation frame 1, and the three ventilation frames 5 correspond to the lower side, the left side, and the right side of the ventilation frame 1.

  As shown in FIG. 2, the ventilation frame 5 includes a dovetail groove portion 50 formed along the front longitudinal direction and having a dovetail groove a in which the sheet S (FIG. 3) is fixed, and the longitudinal direction of the dovetail groove portion 50. And an L-shaped piece 51 having an L-shaped cross section provided continuously along the L-shaped section, and the L-shaped piece 51 is disposed toward the inside of the ventilation frame 1.

  In addition, an inclined piece 52 is provided at the boundary between the dovetail groove portion 50 and the L-shaped piece 51 in the ventilation frame 5 so as to incline toward the near side from the dovetail groove portion 50 to the L-shaped piece 51.

  Specifically, the dovetail portion 50 is inwardly formed by a long horizontal plate-like bottom frame 50a and a pair of side frames 50b and 50c that stand up obliquely along both longitudinal ends of the bottom frame 50a. The ant groove a is formed.

  Further, the L-shaped piece 51 is provided so as to extend vertically along a flat vertical frame 51a arranged in a direction perpendicular to the bottom frame 50 and the rear end of the vertical frame 51a in the figure. 50 bottom frames 50a and a horizontal frame 51b arranged on the same plane.

  And, the front side end of the side frame 50b on the L-shaped piece 51 side in the dovetail portion 50 is arranged at a lower position (back side) than the front side end of the vertical frame 51a of the L-shaped piece 51, The inclined piece 52 connects the front side end of the side frame 50b and the front side end of the vertical frame 51a.

  By providing the above configuration, the ventilation frame 5 can fix the sheet S through the sheet fixing member T made of a locking wire in the dovetail groove a of the dovetail groove portion 50 as shown in FIG. It becomes.

  2 and 3 show the right ventilation frame 5 corresponding to the right side of the ventilation frame 1, the shapes of the left and lower ventilation frames 5 corresponding to the left and lower sides of the ventilation frame 1 are shown. This is the same as FIG. 2 and FIG.

  The left ventilation frame 5 is arranged in line symmetry with the ventilation frame 5 shown in FIGS. 2 and 3, and the lower ventilation frame 5 is the ventilation frame 5 shown in FIGS. Are arranged 90 degrees to the right (FIGS. 5 and 6).

  On the other hand, as shown in FIG. 4, the support ventilation frame 4 corresponding to the upper side of the ventilation frame 1 is formed along the front longitudinal direction and has a dovetail groove portion 40 having a dovetail groove a on which the sheet S is fixed. A support part 41 which is provided along the lower end of the dovetail part 40 and supports the window frame 3 in a swingable manner, and is connected to the inner side of the support part 41 along the longitudinal direction and is connected to the inner frame 2. And an engaging portion 42 having engaging grooves b.

  The dovetail groove portion 40 of the support ventilation frame 4 is formed in the same manner as the dovetail groove portion 50 of the ventilation frame body 5 shown in FIGS. 2 and 3, and is not shown, but includes a bottom frame and a pair of side frames. The dovetail a is formed inside.

  And although not shown in figure, the support ventilation frame 4 fixes the sheet | seat S in the said dovetail groove a via the sheet fixing member T which consists of a locking line.

  The support portion 41 that supports the window frame 3 in a swingable manner is provided in the longitudinal direction along the side frame on the support portion 41 side of the dovetail groove portion 40 and from the near side toward the far side. Bend.

  Further, the engagement portion 42 provided continuously along the longitudinal direction on the back side of the support portion 41 is formed with an engagement groove b having a U-shaped cross-section opening along the lower side in the figure. The upper side of the inner frame 2 engages in the engagement groove b.

  Therefore, the support ventilation frame 4 of the ventilation frame 1 includes the dovetail portion 40, whereby the sheet S can be fixed.

  Further, the support ventilation frame 4 includes the support portion 41, and the window frame 3 is hooked on the support portion 41, so that the window frame 3 can be supported swingably with the support portion 41 as a fulcrum. It becomes.

  Further, since the three ventilation frames 5 of the ventilation frame 1 are provided with the L-shaped pieces 51 (FIG. 2), the other ventilation frame 5 and the support ventilation frame 4 are overlapped and fixed on the L-shaped pieces 51. Thus, the assembly performance of the ventilation frame 1 is improved.

  Further, the upper support ventilation frame 4 is provided with the engaging portion 42, and the lower, left and right three ventilation frames 5 are provided with the L-shaped pieces 51, so that the upper side of the inner frame 2 is engaged with the engaging portion 42. 5, the other side of the inner frame 2 is supported from the back side (back side) by the L-shaped piece 51, as shown in FIG. It is possible to prevent the inner frame 2 from being pressed and dropped by the window frame 3 when the window frame 3 is closed.

  The inner frame 2 that is detachably attached to the ventilation frame 1 is formed in a rectangular shape by arranging four long inner frame bodies 6 vertically and horizontally, as shown in FIGS. The inner frame body 6 has a U-shaped groove portion 60 in which a U-shaped groove c in which the net N is fixed is formed along the front longitudinal direction, and a longitudinal direction along the rear end of the U-shaped groove portion 60. And a flat plate piece 61 provided in a row.

  Then, the net N is fixed in the groove c via the net fixing member U, and the net N is stretched on the inner frame 2, and the inner frame body 6 corresponding to the upper side of the inner frame 2 The character groove portion 60 is engaged in the engagement groove b of the support ventilation frame 4 (FIG. 4).

  As shown in FIGS. 2 and 3, the inner frame 2 is located on the front side of the L-shaped piece 51 of the ventilation frame 5 and corresponds to the lower side, the left side or the right side of the inner frame 2. 6 flat plate pieces 61 are stacked and clipped.

  The clip K, which is overlapped with the horizontal frame 51b of the flat piece 61 and the horizontal piece 51, has a pair of front and rear holding pieces 90, 90 for holding the flat piece 61 and the horizontal frame 51b in an overlapped state, and the holding piece 90 , 90 is provided with protrusions 91, 91 protruding inside.

  Then, by engaging the protrusions 91 and 91 with a groove 51c (FIG. 2) formed in the longitudinal direction on the back surface of the horizontal frame 51b of the ventilation frame 5, it is possible to prevent the clip K from being displaced. It becomes.

  The shape of the clip K is not limited to the above, and can be selected as appropriate as long as the flat plate piece 61 of the inner frame 6 and the horizontal frame 51b of the ventilation frame 5 can be overlapped and stopped. It is.

  Further, by clipping as described above, it is possible to prevent the inner frame 2 from falling, and the inner frame 2 can be easily attached to and detached from the ventilation frame 1. The flat piece 61 of the body 6 may be fixed to the horizontal frame 51 b of the ventilation frame 5.

  Further, FIG. 1 shows a state in which a saddle frame (not shown) projecting on both sides of the support column 10 is formed, and the inner frame 2 is mounted so as to face the ventilation ports divided into the left and right.

  And, for example, the inner frame 2 mounted facing the ventilation port defined on the right side in FIG. 1 has the right and lower inner frame bodies 6 clipped to the right and lower ventilation frame bodies 5, The left inner frame 6 is clipped to the heel frame.

  That is, by providing the above configuration, the upper side of the inner frame 2 is engaged with the ventilation frame 1, the other three sides of the inner frame 2 are clipped to the ventilation frame 1 or the support column 10, and the inner frame 2 is attached to the ventilation frame. 1 can be securely fixed, but the position and quantity for clipping can be selected as appropriate.

  Further, by providing the inner frame 2 for extending the net N, it becomes possible to attach the inner frame 2 with the net N extended in advance to the ventilation frame 1, and the workability of attaching and detaching the net N to the ventilation frame 1 is improved. It becomes possible to improve.

  Further, since the net N can be attached to the inner frame 2 with a work table or the like, the net N can be easily extended without slack even when a ventilation port is disposed at a high place.

  In addition, since the net N is extended to the inner frame 2, even if the net N is removed from the ventilation frame 1, the net N is maintained in the extended state, so that the operation of cleaning the net N is easy.

  Further, since the inner frame body 6 includes the flat plate piece 61, the flat plate piece 61 can be used to connect to the other flat plate piece 61, and the assembly performance of the inner frame 2 is improved.

  Further, since the inner frame body 6 includes the U-shaped groove portion 60, the U-shaped groove portion 60 can be engaged with the engagement groove b of the support ventilation frame body 4, and the upper side of the inner frame 2 is formed. It can be easily fixed to the ventilation frame 1.

  A window frame 3 that is swingably attached to the support ventilation frame 4 of the ventilation frame 1 and opens and closes the ventilation port is composed of a single long hooked window frame 7 pivotally attached to the ventilation frame 1; Three long window frame bodies 8 are arranged vertically and horizontally and formed into a rectangle.

  As shown in FIG. 4, the hooking window frame 7 corresponds to the upper side of the window frame 3, and is formed along the front longitudinal direction and has a dovetail groove portion 70 having a dovetail groove a in which the sheet S1 is fixed, A hook piece 71 continuously provided along the upper end of the dovetail groove portion 70 and swingably engaged with the support portion 41 of the support ventilation frame 4 and a flat plate provided continuously along the lower end of the dovetail groove portion 70. The flat plate piece 72 is provided.

  The hook piece 71 is curved from the back side toward the front side, and the window frame 3 is supported by the support portion 41 of the ventilation frame 1 by engaging the hook piece 71 with the support portion 41 of the support ventilation frame body 4. It becomes possible to swing around 41 as a fulcrum.

  On the other hand, the three window frame bodies 8 correspond to the lower side, the left side, and the right side of the window frame 3, and are formed along the longitudinal direction of the front side as shown in FIG. The dovetail groove portion 80 is provided, and an L-shaped piece 81 having an L-shaped cross section that is provided along the longitudinal direction of the dovetail groove portion 80, and the L-shaped piece 81 is arranged toward the inside of the window frame 3.

  The dovetail portion 80 and the L-shaped piece 81 of the window frame 8 are formed in the same manner as the dovetail portion 50 and the L-shaped piece 51 of the ventilation frame 5 shown in FIG. 2, and the window frame 8 is inclined. It differs from the ventilation frame 5 in that a horizontal piece 82 is provided instead of the piece 52.

  Specifically, in the window frame 8, the side frames 80 b and 80 c of the dovetail groove 80 are formed to have the same height as the vertical frame 80 a of the L-shaped piece 81, and the side portion on the L-shaped piece 81 side is formed. The front end of the frame 80b and the front end of the vertical frame 81a are connected by a horizontal piece 82.

  Further, in the present embodiment, the dovetail portions 40, 50, 70, 80 of the ventilation frame 1 and the window frame 3 are fixed to have the same size because the sheets S, S1 are fixed using the common sheet fixing member T. It is preferable to be formed.

  That is, when the ventilation frame 5 includes the inclined pieces 52, the vertical frame 51 a of the ventilation frame 5 is formed to be longer than the vertical frame 81 a of the window frame 8.

  Therefore, as shown in FIG. 6, the window frame 3 is closed with the inner frame 6 overlapped with the horizontal frame 51 b of the ventilation frame 5 and clipped, and the lower window frame 6 is moved to the lower inner frame. When overlapped with the body 6, it is possible to reduce the step between the lower window frame 8 and the lower ventilation frame 5 arranged on the front side by the thickness of the inner frame 6.

  By the way, when the sheet S is spread on a greenhouse having a ventilation opening on the wife surface, generally, the ventilation opening is first closed with the window frame 3 and the entire wife face of the greenhouse is covered with the sheet S. .

  Next, the sheet S is fixed in the dovetails a of the arched pipe, the ventilation frame 1 and the window frame 3 through the sheet fixing member T, and the sheet S is spread over the entire wife's face of the greenhouse.

  And the sheet | seat S1 extended on the window frame 3 with a cutter etc. and the sheet | seat S extended on the wife's face of a greenhouse are divided | segmented.

  Accordingly, as described above, the entire wife's face of the greenhouse is covered with the sheet S by reducing the level difference between the lower window frame 8 and the lower ventilation frame 5 in the state in which the window frame 3 is closed. Thus, when the sheet S is fixed in each dovetail a, the load on the sheet S can be reduced and the sheet S can be prevented from being damaged.

  Further, since the ventilation frame 5 includes the inclined piece 52, the sheet S arranged between the dovetail groove portion 80 of the window frame body 8 and the dovetail groove portion 50 of the ventilation frame body 5 is arranged along the inclined piece 52. Is done.

  Accordingly, the sheet S can be cut on the inclined piece 52, and the workability of dividing the sheet S1 extended on the window frame 3 and the sheet S extended on the end face of the greenhouse can be improved. It becomes.

  While the preferred embodiment of the present invention has been described above, it should be understood that modifications, variations and changes may be made without departing from the scope of the claims.

  For example, in the above-described embodiment, the greenhouse ventilation device is provided on the end surface of the greenhouse. However, the present invention is not limited to this, and it may be provided on the side surface or roof surface of the greenhouse.

  Moreover, in this Embodiment, as shown in FIG. 1, although the ventilation port is divided | segmented into right and left by the support | pillar 10, the state where the inner frame 2 was each mounted | worn facing each divided ventilation port is shown. The shape and the number of divisions of the ventilation port can be appropriately selected.

  For example, the support 10 in FIG. 1 may be provided at the left end or the right end of the ventilation frame 1 so that the ventilation port is not divided, and one inner frame 2 may be mounted facing the ventilation port.

a dovetail groove b engagement groove c groove K clip N net S sheet S1 (expanded on the face of the greenhouse) sheet S1 (expanded on the window frame) sheet T sheet fixing member U serving as a locking line net fixing member 1 Ventilation frame 2 Inner frame 3 Window frame 4 Support ventilation frame 5 Ventilation frame 6 Inner frame 7 Hook window frame 8 Window frame 10 Post 11 Arm 40, 50, 70, 80 Dovetail portion 41 Support portion 42 Engagement portion 51, 81 L-shaped piece 52 Inclined piece 60 U-shaped groove 61 Flat piece 82 Horizontal piece 71 Hook piece 72 Flat piece

Claims (7)

A ventilation frame (1) that forms a ventilation opening in a plastic house in which the sheet (S) is extended, and an inner frame (2) that is detachably attached to the ventilation frame (1) and the net (N) is extended. And a window frame (3) pivotally attached to the ventilation frame (1) and on which the sheet (S1) is extended,
A greenhouse ventilation device for opening and closing the ventilation opening by swinging the window frame (3) with the inner frame (2) mounted on the ventilation frame (1). The ventilation frame (1) has one long supporting ventilation frame (4) to which the window frame (3) is pivotally attached and three long ventilation frames (5) vertically and horizontally. Arranged to form a rectangle,
The support ventilation frame (4) corresponds to the upper side of the ventilation frame (1), is formed along the front longitudinal direction, and has a dovetail groove portion (40) having a dovetail groove (a) to which the sheet (S) is fixed. ), A support portion (41) that is provided along the lower end of the dovetail groove portion (40) and supports the window frame (3) in a swingable manner, and a longitudinal direction on the back side of the support portion (41). The greenhouse ventilation device according to claim 1, further comprising an engaging portion (42) having an engaging groove (b) that is continuously provided along the inner frame and engages with the inner frame (2). . The three ventilation frames (5) correspond to the lower side, the left side, and the right side of the ventilation frame (1), and are formed along the longitudinal direction of the near side to fix the sheet (S). And an L-shaped piece (51) having an L-shaped cross section that is provided along the longitudinal direction of the dovetail groove portion (50),
The ventilation apparatus for greenhouses according to claim 2, wherein the L-shaped piece (51) is arranged toward the inside of the ventilation frame (1).   At the boundary between the dovetail groove portion (50) and the L-shaped piece (51) in the ventilation frame (5), an inclined piece (52) inclined toward the front side from the dovetail groove portion (50) to the L-shaped piece (51). The ventilation apparatus for greenhouses of Claim 3 provided. The inner frame (2) is formed in a rectangular shape by arranging four long inner frame bodies (6) vertically and horizontally,
The inner frame (6) includes a U-shaped groove portion (60) in which a U-shaped groove (c) in which the net (N) is fixed is formed along the front longitudinal direction, and the U-shaped groove portion ( 60) A flat plate piece (61) provided in a longitudinal direction along the back end, and a flat plate piece (61).
The U-shaped groove (60) of the inner frame (6) corresponding to the upper side of the inner frame (2) is engaged in the engagement groove (b) of the support ventilation frame (4). The ventilator for greenhouses according to claim 2 to 4.   The inner frame (2) is located on the front side of the L-shaped piece (51) of the ventilation frame (5), and the inner frame (6) corresponding to the lower side, the left side or the right side of the inner frame (2). 6. The greenhouse ventilation device according to claim 5, wherein the flat plate pieces (61) are overlapped and clipped. The window frame (3) has one long hooked window frame (7) pivotally attached to the ventilation frame (1) and three long window frames (8) vertically and horizontally. Arranged to form a rectangle,
The hooking window frame (7) corresponds to the upper side of the window frame (3), and is formed along the front longitudinal direction and has a dovetail groove portion (70) having a dovetail groove (a) to which the sheet (S1) is fixed. ), A hook piece (71) continuously provided along the upper end of the dovetail groove portion (70) and swingably engaged with the support portion (41) of the support ventilation frame (4), and the dovetail groove portion The greenhouse ventilator according to any one of claims 2 to 6, further comprising a flat plate piece (72) provided continuously along a lower end of (70).

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