JP2001320983A - Vinyl greenhouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vinyl greenhouse equipped with a ceiling ventilator having a simple structure, a slight worry on penetration of rainwater and a ready opening/closing operation in connection with a ventilator for adjusting a temperature and a humidity in the vinyl greenhouse. SOLUTION: A structure in which a framework forming a vertical plane at the highest part of the ceiling of the greenhouse is installed and a flexible sheet to cover the vertical plane is opened and closed is adopted. Although the vertical plane can be formed by arranging a vertical part at the ceiling part of a greenhouse main frame, the shape of the main frame is left as usual, a flat chevron auxiliary frame is fixed to the top part, the vertical plane is formed advantageously in terms of cost and this process has a merit of application to an existing greenhouse. The vertical plane is preferably installed toward a downwind side. Consequently penetration of rainwater into a greenhouse can be avoided and the installation of the vertical plane has a merit of promoting ventilation in the greenhouse by a negative pressure effect.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a greenhouse for plant cultivation in which a flexible sheet is covered on a framework formed of pipe material, and more particularly to a ventilation window for adjusting the temperature and humidity in the house. It is about the greenhouse that was set up.

[0002]

2. Description of the Related Art The temperature in a greenhouse changes extremely depending on the presence or absence of sunshine. If the temperature inside the house rises excessively, it will adversely affect the growth of the plants. Therefore, the temperature inside the house is adjusted by opening and closing a part of the house freely and appropriately performing ventilation. For small, short houses, the hem of the flexible sheet covering the framework is rolled up for ventilation, but for large, tall houses, ventilation windows should be provided in the middle of the side walls. Is common.

[0003] However, the heated air in the house is
Since it rises and accumulates on the ceiling part of the house, it is not possible to provide sufficient ventilation only by providing a ventilation window on the side wall part of the house, and it is desirable to provide a ventilation window also on the ceiling part of the house. As a structure in which a ventilation window is provided in a ceiling portion of a house, structures shown in FIGS. 3 to 5 have been proposed.

The structure shown in FIG. 3 is a structure in which an opening 1 provided on the ceiling of a house is provided with a lid 2 for closing the opening, and the lid 1 is moved up and down to open and close the opening 1 for ventilation. The structure shown in FIG. 4 is a structure in which a part 3 of the ceiling of the house is swung up and down around an axis 4 in the longitudinal direction of the house to perform ventilation, and FIG. 5 shows a part of the sheet covering the ceiling of the house. Is wound on a winding shaft 5 to open and close.

[0005]

However, in the conventional structure shown in FIGS. 3 and 4, the structure of the house becomes complicated, and it becomes difficult to open the ventilation window due to the weight of the snow when snow is accumulated. Also,
In the conventional structure shown in FIG. 5, when opening and closing the ventilation window, the band must be loosened after opening and closing the holding band holding the sheet, and then the band must be retightened, which is troublesome to open and close. Furthermore, in the structure of FIG. 5, since the ventilation window opens toward the sky,
There is a problem that it is difficult to maintain an appropriate environment in the house when the rainwater is drastically penetrated into the house during rainfall.

Accordingly, an object of the present invention is to provide a greenhouse having a ceiling ventilation window which has a simple structure, is less likely to infiltrate rainwater, and is easily opened and closed.

[0007]

According to the present invention, a structure for forming a vertical surface 16 is provided at the highest part of the ceiling of a house, and a flexible sheet for covering the vertical surface is opened and closed. By doing so, the above problem is solved.
For the opening and closing of the sheet on the vertical surface, the sheet winding type structure conventionally used for opening and closing the ventilation window on the side wall of the house is most practically appropriate.

The vertical surface 16 can also be formed by providing a vertical portion on the ceiling portion of the main frame 12, which defines the cross-sectional shape of the house. It is advantageous in terms of cost to fix the auxiliary frame 14 having a character shape and to provide the longitudinal member 15 connecting the upper end of the vertical portion 20 of the auxiliary frame. There is an advantage that a ventilation window can be provided.

The vertical surface 16 is preferably provided on the leeward side, so that rainwater can be prevented from entering the house, and there is an advantage that ventilation in the house is promoted by a negative pressure effect. Of course, since the wind direction changes depending on the weather conditions, it is determined which direction the vertical plane should be provided in consideration of the direction of the wind and the direction of the ridges which are most common in the area where the house is installed.

In the house, together with the ceiling ventilation window having the above structure,
Ventilation windows are also provided at an intermediate height portion of the side wall of the house, and by opening both ventilation windows, ventilation in the house is achieved by utilizing convection of air in the house and wind in the natural world.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention of this application will be further described below with reference to the embodiments shown in FIGS. The greenhouse frame 11 includes an inverted U-shaped main frame 12 having an arched ceiling and a vertical side wall, a plurality of longitudinal members 13 connecting the juxtaposed main frames to each other, A flat inverted L-shaped auxiliary frame 14 fixed to the highest central portion of the ceiling of the frame and an auxiliary longitudinal member 15 connecting the upper part of the auxiliary frame are formed. The arrangement interval of the main frame 12 is usually 350
４５０450 mm, and the auxiliary frames 14 are arranged at twice the interval. That is, the auxiliary frame 14 is provided every other main frame. The inverted L-shaped auxiliary frame 14 forms the top of the inclined ceiling and a vertical surface 16 at its end.

A frame fixing member 17 having a groove cross section for fixing a sheet to be covered on the frame 11 is provided on the longitudinal member 1.
3 is appropriately arranged in parallel. The greenhouse sheet 18 is inserted into the groove of the fixture 17 and is fixed by the elasticity of the corrugated spring wire 19 fitted inside the groove. In the part of the auxiliary frame 14, fixtures 17, 17 a, 17 b, and 17 c are arranged at a root portion at both ends of the auxiliary frame 14, an upper portion of the vertical portion, an intermediate portion, and a root portion.

The seat 1 on the left side of the ceiling surface in FIG.
8L is a fixture 1 whose right end is located above the vertical portion of the auxiliary frame.
After being fixed at 7a, it is hung down along the vertical surface 16, and the winding shaft 5 is fixed to its lower side. The hanging portion of this sheet becomes the ceiling ventilation window 21. Seat 1 on the right side of the ceiling
8R, the left end thereof is fixed to a fixture 17b in the middle of the vertical portion 20 of the auxiliary frame 14, and the fixture 17 at the base of the vertical portion is provided.
After being fixed to c and 17 in sequence, they extend to the right wall side.

An operation rod 22 is connected to one end of the winding shaft 5 downward through a flexible joint, and a handle 23 is fixed to a lower end of the operation rod.

On the side wall of the house, as shown in FIG.
By appropriately providing the fixture 17, the wind-up / down ventilation windows 24, 25 are provided in two upper and lower stages. The lower end of the side wall is covered with a sheet that cannot normally be opened and closed in order to avoid direct contact of the plant with the cold air.

On the outside of the seat where the ventilation window is provided,
The bird net and the holding band are arranged, and the winding shaft fixed to the lower end of the sheet of the opening / closing section is located between the pipe of the main frame or the auxiliary frame and the bird net. When the handle connected to the take-up shaft is rotated, the take-up shaft 5 takes up the sheet and moves upward to open the ventilation window. When the handle is turned in the opposite direction, the take-up shaft descends by its own weight, closing the ventilation window.

If the ceiling ventilation window 21 has the above-described structure, the auxiliary frame 14 and the auxiliary longitudinal member 15 are provided in the frame of the conventional greenhouse so that the seat can be opened and closed on the vertical portion 20 of the auxiliary frame. The vertical opening and closing structure of the seat can be similar to the ventilation window on the side wall, so there is no need for any special parts or structure for the ceiling ventilation window. Opening and closing can be performed by the same operation as in the related art. By providing the ceiling ventilation window, it is possible to effectively perform ventilation in the house, and it is also possible to perform finer temperature control in the house. Further, according to the structure of the present invention, the auxiliary frame 14 and the auxiliary longitudinal member 15 are attached to the conventional greenhouse, and the seat is covered in the above-described manner, so that the ceiling ventilation window can be easily provided. Can be converted into a house.

[Brief description of the drawings]

FIG. 1 is an overall cross-sectional view of a greenhouse according to the present invention.

FIG. 2 is an enlarged view of the vicinity of a ceiling ventilation window in FIG.

FIG. 3 is a perspective view of a conventional example.

FIG. 4 is another perspective view of a conventional example.

FIG. 5 is still another perspective view of a conventional example.

[Explanation of symbols]

 5 Winding axis 14 Auxiliary frame 16 Vertical plane 21 Ceiling ventilation window

Claims (3)

[Claims] 1. An auxiliary frame (14) for forming a vertical surface (16) in the middle of the ceiling of a framework forming a ridge having an arched or gate-shaped cross section.
And a greenhouse provided with an openable ceiling ventilation window (21) on the vertical surface. 2. The auxiliary frame (14) has a flat inverted shape.
The greenhouse according to claim 1. 3. A wind-up window having a wind-up structure wherein a wind-up shaft (5) is fixed to a lower side of a flexible sheet hanging down on a vertical surface (16). The described greenhouse.