JP2000287561A - Ventilator for greenhouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilator for greenhouse, which can prevent gap formation by uniformly and completely shut a window frame facing an opening, allows the opening to be opened or closed at a right position without being affected by wind, is durable and applicable to a large-size greenhouse, and when used in communication with a sheet opening/closing device which utilizes pipe(s), can hold the bundle of the wound sheet to prevent the bundle from being hit by rain or dirt and also prevent evolution of mold. SOLUTION: This ventilator has an opening B on a roof face A or side or gable face, a window frame 1 which faces the opening B and can be freely opened or closed, a driving rod 2 which can freely move in the axial direction along the window frame 1, a support lever 3 extending in the direction perpendicular to the driving rod 2, a support link 4 connected to the window frame 1 at one end and to the support lever 3 at the other end through hinges in such a way to freely rise or fall, and a driving link 5 connected to the driving rod 2 at one end and to the support link 4 at the other end through hinges, wherein the driving rod 2 is moved in the axial direction by a driving member to raise or fall the support link 4 via the driving link 5 and thereby to move the window frame 1 to the open or closed position.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilator for opening and closing an opening at an arbitrary position on a roof surface, a side surface or a wife surface of a greenhouse.

[0001]

2. Description of the Related Art A greenhouse generally referred to as a greenhouse used for growing plants and the like is provided with a large number of arch pipes standing on the ground, for example, and is provided with horizontal columns and horizontal sheet fixing frames crossing the arch pipes. A transparent or translucent sheet made of, for example, a synthetic resin material is stretched on the skeleton through the sheet fixing frame.

Further, in the above greenhouse, an opening is formed at an arbitrary position on a roof surface, a side surface, or a wife surface, and the opening is opened and closed with a sheet or a window such as a skylight facing the opening is opened and closed to perform ventilation. ing.

In order to ventilate the greenhouse by opening and closing the seat as described above, the upper end of the seat is fixed to the upper end of the opening through, for example, a sheet retaining frame and a locking line, and the lower end of the seat is fixed to the opening. Winding the pipe in the horizontal direction, rotating the pipe manually or through a motor or the like to open the opening while winding the sheet upward from below, and opening the opening by unwinding the wound sheet reversely Is closed.

On the other hand, as an example of a case where ventilation is performed by opening and closing a window facing an opening, a window frame is connected to a string via a link which can be turned upside down, and this string is horizontally moved from an outer end. The link is turned up and down to move the window frame up and down to open and close. Similarly, as another example, a window frame opposed to the opening is connected to a rotating rod made of a pipe via a link, and a drive source consisting of a worm gear and a chain is attached to an end of the rotating rod, and the rod is removed from this drive source. The window frame is opened and closed by rotating and expanding and contracting the link.

[0005]

Although each of the ventilators described above is not particularly defective, it is desired to improve the following disadvantages.

First, in a sheet opening / closing apparatus using a pipe roll, an opening is opened when the sheet is wound up, and is closed when the sheet is rewound. However, when the sheet is rolled up and the opening is opened, the sheet is in the form of a bundle wrapped around a pipe, and if left as it is, rainwater will enter the bundle of sheets. Or snow accumulates on the bundle of sheets, making it difficult to rewind, as well as contaminating the sheets,
It can also cause mold. Therefore, in order to prevent the generation of stains and mold on the sheet, measures such as covering the bundled sheet with a cover are provided. Problems such as breakage occur, and improvement is desired.

Second, in the ventilation mechanism for opening and closing the window frame through the string, the string itself has elongation. Even when the string is sufficiently pulled, the window frame does not descend sufficiently due to the elongation of the string. There is a possibility that a slight gap may appear between the part. Further, since the driving member is a string, the durability is poor, and it is not suitable for a large house requiring strength.

Third, in a ventilation mechanism that opens and closes a window frame via a worm gear and a rotating rod, as in the case of the above-described string drive, when the ventilation window is closed, it may not be closed until it is completely sealed. . That is, the worm gear may not be sufficiently tightened by the chain, and as a result, a slight gap is formed between the opening and the window frame. For this reason, in order to completely close the above-mentioned window frame, it is necessary to process each member precisely and to assemble it precisely, and it is difficult to process and assemble. Furthermore, since the rotating rod is used, when the rotating rod is improved so as to be applied to a large house, the rotating force by the worm gear is not transmitted to the end of the rotating rod,
There is a possibility that the window frame near the end of the rotating rod is not evenly and completely closed because the rotating rod is twisted or deformed on the way. Further, when the window frame is blown by the wind, the window frame is blown up and the force acts as a torque for rotating the rotating rod, so that the opening / closing situation is shifted.

Therefore, an object of the present invention is to completely and completely close a window frame provided opposite to an opening so as to prevent a gap from being generated, and to prevent a shift in an opening and closing state due to the influence of wind. It is durable and can be applied to large houses, and even when it is used in cooperation with a sheet opening and closing device using a pipe, it retains the wound sheet bundle and keeps the sheet bundle in rainwater or dirt. It is an object of the present invention to provide a ventilator for a greenhouse, which can prevent the adherence of mist and prevent the occurrence of mold.

[0010]

In order to achieve the above-mentioned object, a first means of the present invention is to provide an opening on a roof surface, a side surface or a wife surface, and open and close a window frame in opposition to the opening. Freely provided, further provided with a drive rod that is axially movable along the window frame, and provided with a support rod in a direction orthogonal to this drive rod,
A support link is hinged between the window frame and the support rod so that the support link can be tilted up and down, the drive link is hinged between the drive rod and the support link, and the drive rod is axially moved by a drive member. In this case, the supporting link is moved up and down through the driving link to move the window frame in the opening direction or the closing direction.

[0011] Similarly, the second means is to provide an opening on the roof surface, side surface or end surface, provide a window frame so as to be openable and closable opposite to the opening, and further provide a fixing rod facing the window frame along the window frame. An axially movable drive rod is provided, a support rod is provided in a direction perpendicular to the drive rod, and a support link is hinged between the window frame and the support rod so that the support link can be turned upside down. The drive link is hinged to the drive link, and the drive rod is hinged to the base end of the drive arm in the direction opposite to the drive link, and the distal end of the drive arm extends in a direction perpendicular to the drive rod. A support arm is provided, an intermediate link is rotatably connected between the fixed rod and the drive arm, and the drive rod is moved in the axial direction by a drive member to raise and lower the support link via the drive link to open the window. frame The support arm while rotating the and drive arm and the intermediate link to move in the direction or closing direction of opening is characterized in that the moving away direction or close direction relative to the window frame.

In the above first and second means, an opening is formed in a top ridge portion of a frame composed of a large number of arched pipes, and a drive rod extending along a window frame extends in a direction orthogonal to each arch pipe. It is preferable that a support rod is erected along the arch pipe above an arbitrary arch pipe, and the drive rod penetrates a guide suspended from the support rod so as to be movable in the horizontal direction.

Similarly, two support links provided between the window frame and the support links are provided in parallel, and a Y-shaped bifurcated drive link is provided between each support link and the drive rod. preferable.

Similarly, it is preferable that the driving member is constituted by a screw type pantograph, a cylinder or the like.

In the second means, a sheet winding or rewinding mechanism is provided by a pipe on a roof surface, a side surface, or a wife surface, and the bundle of sheets wound on the pipe is formed by a window frame lowered and a support arm raised. You may pinch.

In this case, it is preferable that a spring member or a cushion member is provided on the support arm.

Similarly, in the second means, a plurality of tracks are provided on the roof surface, the side surface, or the end surface, a moving member is provided along the activation, and the sheet is mounted on a supporting frame horizontally provided on the moving member or the moving member. An end may be attached, and the moving member having the sheet stretched along the track may be held between the lowered window frame and the raised support arm.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 6 show an embodiment corresponding to the first means of the present invention. As shown in FIG. 1, the ventilation device for this greenhouse is provided in a ridge, which is the top of a greenhouse R in which transparent sheets are spread on a number of arch pipes 10. However, this ventilation device may be provided on the side surface or the wife surface of the greenhouse R. The basic structure of the ventilation device according to the present embodiment is such that an opening B is provided on a roof surface A of a greenhouse R, and a window frame 1 is provided so as to be openable and closable opposite the opening B.
Further, a drive rod 2 which is movable in the axial direction is provided along the window frame 1, and a support rod 3 is provided in a direction orthogonal to the drive rod 2, and a support link 4 is provided between the window frame 1 and the support rod 3. 4 is hinged so that it can be turned upside down, a drive link 5 is hinged between the drive rod 2 and the support link 4, and the drive rod 2 is moved in the axial direction by a drive member K, so that the drive link 5 is interposed. The support links 4 and 4 to raise and lower the window frame 1
Is moved in the opening direction or the closing direction.

FIGS. 7 to 17 show an embodiment corresponding to the second means of the present invention. In this embodiment, the first means is further provided with a support arm. As shown in FIG. 8, the basic structure of this embodiment is to provide an opening B on a roof surface A, open and close a window frame 1 facing the opening B, and A fixed rod 6 also serving as a ridge pipe and a drive rod 2 movable in the axial direction,
A support rod 3 is provided in a direction orthogonal to the drive rod 2, and the support links 4 and 4 are hinged between the window frame 1 and the support rod 3 so that the support links 4 and 4 can be turned upside down. The drive link 5 is hinged between the drive rods 2 and
Drive arm 7 in the direction opposite to drive link 5
And a support arm 8 extending in a direction perpendicular to the drive rod 2 is provided at a distal end of the drive arm 7, and an intermediate link 9 is rotatable between the fixed rod 6 and the drive arm 7. And by moving the drive rod 2 in the axial direction with the drive member K, the support links 4 and 4 are moved up and down via the drive link 5 to move the window frame 1 in the opening direction or the closing direction, and And the support arm 8 is moved in a direction away from or approaching the window frame 1 while rotating the intermediate link 9.

Next, the first embodiment will be described in detail with reference to FIGS.

The greenhouse R has a large number of arch pipes 1
0, a sheet S is spread over the arch pipe 10 and a dovetail frame 12 is provided at the ridge of the greenhouse R.
Is formed, and a window frame 1 is disposed movably up and down so as to face the opening B.
The window frame 1 is configured by extending a sheet S via a locking line 13 on a rectangular frame 14a and an intermediate frame 14b. A drive rod 2 is disposed directly below the opening B along the longitudinal direction so as to be movable in the axial direction. A drive member K composed of a jack-type pantograph is attached to one end of the drive rod 2.

The arch pipe 1 at a position close to the opening B
Above 0, a support rod 3 along the arch pipe 10 is connected via brackets 15,15. A hollow guide 11 is suspended from the support rod 3 via a bracket 16, and a drive rod 22 is slidably inserted into the guide 11 and supported. Further, two brackets 17, 17 are fixed almost at the center of the support rod 3, and the window frame 1 is fixed.
The other bracket 1 is attached to the intermediate frame 14b constituting
8 and 18 are provided, and these brackets 17 and 1 are provided.
The base ends of two parallel support links 4 and 4 are hinged between the support rod 3 and the window frame 1 via a hinge 8 so as to be freely rotatable.

A bracket 19 is fixed to the drive rod 2, and a plurality of mounting holes 20 and bolts 2 are provided in the support links 4 and 4.
The base ends of the inclined Y-shaped bifurcated drive links 5 are rotatably hinged via these brackets 19 and optional mounting holes 20 and bolts 21.
When the tip of the driving nonk 5 is pivotally connected to an arbitrary mounting hole 20,
The height of the window frame 1 is adjusted by the selected mounting hole 20. The mounting hole 20 may be a long hole.

Next, the operation will be described.

FIGS. 1 and 2 show a case where the window frame 1 is pushed up and the opening B is opened.
5 shows a state in which the window frame 1 is lowered and the opening B is closed. When the window frame 1 is opened, the drive rod 2 is pushed and moved in the direction of arrow x, and when the window frame 1 is closed, the drive rod 2 is pulled and moved in the direction of arrow y.

When the drive rod 2 is slid in the x direction via the drive member K, the drive link 5 pushes up the support links 4, 4, and the support links 4, 4 rotate clockwise about the brackets 17, 17. And stand up. For this reason, the window frame 1 also moves upward while rotating about the brackets 17, 17 in conjunction with the rising of the support links 4, 4, and the opening B is opened.

Conversely, when the drive rod 2 is pulled horizontally in the y direction via the drive member K and moved horizontally, the base end of the drive link 5 is pulled in the same direction via the bracket 19, whereby This drive link 5 is a support link 4
, The support link 4 pivots counterclockwise about the bracket 17, and the window frame 1 descends while rotating the window frame 1 counterclockwise in conjunction with the support link 4. The window frame 1 abuts on the edge of the opening B to close the opening B. At this time, since the drive rod 2, the drive link 5 and the support link 4 are rigid, there is no elongation even if they are forcibly pulled by the drive member K, so that no gap is generated between the window frame 1 and the opening B. Thus, the window frame 1 can be pressed down strongly.

Next, a ventilation device as a second means will be described with reference to FIGS.

The ventilating apparatus according to this embodiment is the first type.
The support arm 8 is added to the ventilator according to the means (1). That is, the base end of the drive arm 7 is pivotally attached to the bracket 19 that supports the base end of the drive link 5 in the direction opposite to the drive link 5, and extends in the direction perpendicular to the drive rod 2 at the tip end of the drive arm 7. A support arm 8 is attached, and an intermediate link 9 is hinged between a fixed rod 6 also serving as a ridge pipe and a drive arm 7 via a bracket 22 and a pin 23.

In this case, the drive rod 2 is moved to x
When sliding in the direction, the window frame 1 rises and the drive arm 7 is retracted in the x direction, the support arm 8 and the intermediate link rotate about the bracket 22 as a fulcrum, and the support arm 8 descends in the arrow n direction. Conversely, when the drive rod 2 is slid in the direction of the arrow y, the support arm 8 is raised in the direction of the arrow m, contrary to the above. Other structures, operations and effects are the same as those of the ventilator according to the first means shown in FIG. The support arm 8 includes a horizontal plate 8a and support pieces 8b standing on both ends of the horizontal plate 8a.

As shown in FIG. 9, the pin 2
A guide 24 may be provided in place of 3, and the drive arm 7 may be slidably inserted into the guide 24.

One example of the use of the above-described ventilator is shown in FIG.

That is, according to the ventilating apparatus of this embodiment, when the sheet winding and rewinding mechanism C by the pipe P is provided over the roof surface A and the side surface of the greenhouse, this mechanism is provided. The roll-shaped sheet bundle D wound by C is held between the window frame 1 and the support arm 8 from above and below so as not to fall downward.

The sheet winding and rewinding mechanism C is used for expanding the sheet in the greenhouse or opening and closing the sheet. The sheet winding and rewinding mechanism C may be used in cooperation with the skylight of the window frame 1.

The sheet winding and rewinding mechanism C
Is composed of a dovetail support frame 25 provided in a direction crossing the arch pipe 10, a sheet S having an end coupled to the support frame 25, and a pipe P around which the sheet S is wound, as shown in FIG. When the roll D is released, the sheet S descends along the arch pipe 10 by its own weight or by driving the pipe P. At this time, the sheet S is spread on the arch pipe 10. On the other hand, when the pipe P is rotationally driven for ventilation, the sheet S is wound around the pipe P, and rises as a roll to the ridge, in other words, below the window frame 1, and the greenhouse is fully opened. At this time, for example, as shown in FIGS.
When the drive rod 2 is pulled in the y direction via the drive member K, the window frame 1 is lowered, and the support arm 8 is raised in the direction of the arrow m, thereby being wound around the pipe P as shown in FIG. The rolled sheet bundle D is sandwiched between the window frame 1 and the support arm 8 and further supported by the support pieces 8b to be accommodated below the window frame 1. Therefore, even if the greenhouse is fully opened for a long period of time in summer or the like, it is possible to prevent rainwater or dirt from adhering to the sheet bundle D, thereby preventing the occurrence of mold.

On the other hand, in some cases, only the ventilation of the ridge is performed by using the window frame 1 as a skylight while keeping the sheet S stretched by the sheet winding and rewinding mechanism C. In this case, the driving rod 2 is pushed in the direction of the arrow x and slid while the sheet S is stretched, whereby the window frame 1 is raised to open the opening B, and at the same time, the support arm 8 is lowered.

By the way, when the window frame 1 is used as a skylight while the sheet S is stretched and the window frame 1 is raised to open the opening B, the support arm 8 is lowered. 8 does not interfere with the sheet S, there is no problem. However, when the window frame 1 is lowered from this state to close the opening B, the support frame 8 rises and the support piece 8b may interfere with the sheet S. is there. Therefore, in such a case, a spring member or a cushion member is provided on the support frame 8, and when the support piece 8b hits the sheet S, the pressing force of the support frame 8 or the support piece 8b is caused to interfere with the spring member or the cushion member. The sheet S is prevented from being pushed.

That is, in FIG. 11, an elastic cover 26 is provided as a cushion member Y, and the elastic cover 26 is put on the support piece 8a of the support arm 8, and the elastic cover 26 absorbs the pressing force against the sheet S, and the sheet S is removed. I try not to break.

Similarly, FIG. 12 shows a support piece 8b covered with a spherical elastic cover 27 as a cushion member Y.

Similarly, FIG. 13 shows a structure in which a rod urged upward by a spring 28 and a spherical body 29 as a cushion member Y are provided at the end of a horizontal plate 8a as a main body of the support arm 8. The rod and the spherical body 29 can be used as a support piece and at the same time, when they come into contact with the sheet S, the spherical body 29 descends against the spring 28 and absorbs the pressing force against the sheet S.

FIG. 14 shows that a spring member X is attached to the support arm 8.
The spring member X has a structure in which the drive arm 7 is divided into two parts and the two plates are swingably pin-coupled, and a spring 30 is provided between the two plates. In this case, when the support piece 8b of the support arm 8 contacts the sheet S, the support arm 8 is displaced downward with the pin as a fulcrum via the spring 30 to absorb the pressing force on the sheet S.

Similarly, FIG. 15 shows that a spring 31 is provided as a spring member X at the center of the support arm 8 and is coupled to the drive arm 7 via the spring 31 so that the pressing force of the support arm 8 against the sheet S is applied by the spring 31. It absorbs.

FIG. 16 shows a modification of the spring member X of FIG.
The support arm 8 is connected to the support arm 8 via the base 2 so that the support arm 8 can be lowered when the support arm 8 hits the sheet S.

FIG. 17 shows another embodiment of the ventilation device as the second means of the present invention.

In this embodiment, similarly to FIG. 10, a track E is provided outside a skylight and a moving member F running on the track E is provided.
And a sheet S coupled to a driving member F, and is used when a sheet extending or sheet opening / closing mechanism is provided.

A seat extending or opening / closing mechanism is provided with a track E composed of a chain along the arch pipe 10, and a movable member F which is self-propelled or travels via a driving rod 33 is movably mounted on the track E. , One end of the sheet S is connected to a support frame 35 provided on the moving member F. The moving member F is provided with a gear rotatably in the housing 34. When the gear is meshed with the track E and the gear is rotationally driven via the driving rod 33, the moving member F moves up and down along the track, and at this time, moves. The sheet S is spread with the movement of the member F, and when the moving member F is lowered, the sheet S is simultaneously lowered to open the greenhouse.

Then, when the sheet S is lifted and expanded,
When the window frame 1 is lowered and the support arm 8 is raised in the same manner as described above, the moving member F can be held between the window frame 1 and the support frame 8 from above and below as shown in FIG. For example, the support piece 8b of the support arm 8 is
To support the lower part of the moving member to prevent the moving member from returning. In particular, when the moving member F is sandwiched between the window frame 1 and the support frame 8 from above and below, the tip of the moving member F is pushed in, and the pressing force pushes the moving member F in the direction of arrow Q, thereby pulling the sheet S. Therefore, the tension of the sheet S becomes strong. Further, even if the sheet S is lifted by a typhoon or the like, the moving member F is firmly held, so that the sheet S and the moving member F are prevented from flying, coming off, shifting up and down, right and left, and twisting. And a drive rod 33 interlocked with the moving member
Can be prevented from meandering and deforming.

[0049]

According to the present invention, the following effects can be obtained.

(1) According to the first aspect of the present invention, since the opening and closing operation of the window frame is performed by using the axial movement of the drive rod, the drive rod is not twisted, and from the front end to the rear end. It slides evenly and integrally, and opens and closes the entire window frame evenly and evenly. Similarly, since the drive rod is strong and has no extension, the drive rod can be strongly pulled through the drive member, thereby forcibly pulling the window frame downward. No gap is generated in Therefore, the opening can be completely closed, the heat retaining effect in the greenhouse can be achieved as desired, and the intrusion of wind can be prevented, so that the window frame can be prevented from fluttering even in a strong wind. Similarly, since the drive rod is moved in the axial direction to open and close the window frame, the power transmission loss is smaller than that of the drive of the rotating rod, and it is effective for opening and closing a long window frame.

(2) According to the second aspect of the present invention, since the support arm driven by the drive rod is provided in addition to the opening and closing mechanism of the window frame, the support arm can be used in cooperation with the window frame.
Another member can be held between the window frame and the support arm.

(3) According to the third aspect of the present invention, since the support rod is erected along the arch pipe, the support rod itself reinforces the arch pipe, thereby preventing the entire greenhouse from being distorted and the entire greenhouse. Strength can be improved. Further, since the drive rod slides via the guide provided on the support rod, the drive rod can be reliably moved in the horizontal direction, and the drive rod can be prevented from bending.

(4) According to the fourth aspect of the present invention, two support links are provided in parallel, and since the support links are driven by the Y-shaped drive links, the window frame is stably supported. The opening and closing operation can be performed smoothly.

(5) According to the fifth aspect of the invention, a conventionally known driving member can be used, so that the workability and the assembling property are good, the structure is simple, and the pushing force and the pulling force are strong. .

(6) According to the sixth aspect of the present invention, the sheet bundle wound around the pipe can be clamped between the window frame and the support frame. Therefore, when the sheet is rolled up, it is easy to hold the sheet, and bother. There is no need to provide another holding mechanism or cover the cover each time. In addition, rainwater does not enter the sheet bundle covered by the window frame, and dirt does not adhere to the sheet bundle. As a result, generation of mold can be prevented. Further, the window frame can be used as a skylight, and the sheet wound on the pipe can be used in cooperation with the expansion or opening and closing of the sheet of the greenhouse on the side surface or the end surface.

(7) According to the seventh aspect of the present invention, by providing a spring member or a cushion member on the support arm,
Even if the support arm is raised in a state where the sheet is extended, it is possible to prevent the pressing force of the support frame from being interfered or absorbed when the support arm comes into contact with the sheet to break the sheet.

(8) According to the eighth aspect of the present invention, since the moving member for expanding or opening and closing the sheet is sandwiched between the window frame and the support arm, the moving member and the sheet can be held while being expanded. Therefore, even if the sheet is blown by a strong wind or the like, the moving member and the sheet do not separate, shift up and down, twist, or fly. Further, by pushing the moving member into the window frame, the moving member is slightly pushed downward, so that the sheet can be tensioned correspondingly, so that the sheet can be prevented from sagging and the sheet can be prevented from fluttering.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a roof of a greenhouse to which a ventilator for a greenhouse according to an embodiment of the present invention is attached.

FIG. 2 is an enlarged perspective view showing a state in which a window frame is opened in the ventilator for a greenhouse according to one embodiment of the present invention.

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a side view of FIG. 2;

FIG. 5 is a perspective view showing a state in which a window frame of the ventilation device in FIG. 2 is closed.

FIG. 6 is an exploded perspective view of the ventilation device in FIG.

FIG. 7 is a perspective view of a ventilator for a greenhouse according to another embodiment.

FIG. 8 is a front view of FIG. 7;

FIG. 9 is a perspective view according to another embodiment of the support arm in the ventilation device of FIG. 7;

FIG. 10 is a side view of a state in which a bundle of sheets is held by using the ventilation device of the greenhouse of FIG. 7;

FIG. 11 is a partially enlarged perspective view of a support arm according to another embodiment.

FIG. 12 is a partially enlarged perspective view of a support arm according to another embodiment.

FIG. 13 is a partially enlarged perspective view of a support arm according to another embodiment.

FIG. 14 is a partially enlarged perspective view of a support arm according to another embodiment.

FIG. 15 is a partially enlarged perspective view of a support arm according to another embodiment.

FIG. 16 is a partially enlarged perspective view of a support arm according to another embodiment.

17 is a side view showing a state in which a moving member for sheet extension or opening / closing traveling on a track using the greenhouse ventilation device of FIG. 2 is taught by a window frame and a support arm.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Window frame 2 Drive rod 3 Support rod 4 Support link 5 Drive link 6 Fixed rod 7 Drive arm 8 Support arm 9 Intermediate link A Roof surface B Opening D Bundle E Track F Moving member S Sheet P Pipe X Spring member Y Cushion member

Claims (8)

[Claims] 1. An opening B is provided on a roof surface A, a side surface or a wife surface, and a window frame 1 is provided so as to be openable and closable in opposition to the opening B.
Further, a drive rod 2 which is movable in the axial direction is provided along the window frame 1, and a support rod 3 is provided in a direction orthogonal to the drive rod 2, and a support link 4 is provided between the window frame 1 and the support rod 3. The drive link 5 is hinged between the drive rod 2 and the support link 4 so that the drive link 2 can be pivoted up and down, and the drive rod 2 is moved in the axial direction by the drive member, thereby supporting the support link via the drive link 5. A ventilation device for a greenhouse, wherein the window frame 1 is moved in an opening direction or a closing direction by turning the window frame 4 up and down. 2. An opening B is provided on a roof surface A, a side surface or a wife surface, and a window frame 1 is provided so as to be openable and closable so as to face the opening B.
Further, a fixed rod 6 and a drive rod 2 which are movable in the axial direction are provided along the window frame 1, and a support rod 3 is provided in a direction perpendicular to the drive rod 2. The support link 4 is hinged between the drive rod 2 and the support link 4 so that the support link 4 can be turned upside down. The drive link 5 is hinged between the drive rod 2 and the support link 4. The base end of the drive arm 7 is hinged,
A support arm 8 extending in a direction perpendicular to the drive rod 2 is provided at the tip of the drive arm 7, and an intermediate link 9 is rotatably connected between the fixed rod 6 and the drive arm 2, and the drive rod 2 is connected to the drive rod 2. The support member 4 is moved up and down through the drive link 5 by moving the window frame 1 in the opening direction or the closing direction by moving the window frame 1 in the axial direction by the drive member, and the support arm 8 is rotated while rotating the drive arm 7 and the intermediate link. Window frame 1
A greenhouse ventilation device, wherein the ventilation device is moved in a direction away from or approaching the greenhouse. 3. An opening B is formed in a top ridge of a frame composed of a number of arched pipes 10, and a drive rod 2 extending along a window frame 1 extends in a direction orthogonal to each of the arched pipes 10. The greenhouse according to claim 1 or 2, wherein a support rod (3) is erected along the arch pipe (10) above the upper part (10), and the drive rod (2) penetrates a guide (11) suspended from the support rod (3) so as to be movable in a horizontal direction. Ventilation equipment. 4. Two support links 4 provided between the window frame 1 and the support links 4 are provided in parallel, and a Y-shaped bifurcated drive link 5 is provided between each support link 4 and the drive rod 2. 4. The ventilation device for a greenhouse according to claim 1, 2 or 3, wherein the ventilation device is provided. 5. The ventilation device for a greenhouse according to claim 1, wherein said driving member comprises a screw type pantograph, a cylinder or the like. 6. A sheet winding or rewinding mechanism C by a pipe P is provided on a roof surface A, a side surface or a wife surface, and a window frame in which a bundle D of sheets wound around the pipe P is lowered and a support arm 8 is raised. 6. The ventilator for a greenhouse according to claim 2, characterized in that the ventilator is clamped. 7. The ventilator for a greenhouse according to claim 2, wherein the support member 8 is provided with a spring member X or a cushion member Y. 8. A plurality of tracks E on a roof surface A, a side surface or a wife surface.
The moving member F is provided along the activation E, the end of the sheet S is attached to the moving member F or a support frame provided horizontally on the moving member F, and the sheet S is extended along the track E. 6. A ventilator for a greenhouse according to claim 2, wherein the member is clamped between the lowered window frame 1 and the raised support arm 8.