JPS6047094B2 - Transmission amount adjustment device for light amount and heat amount - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that can adjust the amount of incident sunlight and the amount of heat transmitted inside and outside of the window of a house, particularly on the outside of a greenhouse.

Conventionally, transparent or translucent sheets such as vinyl chloride sheets were used for the outer surface of greenhouses, making it impossible to adjust the amount of sunlight entering the greenhouse. There is a lot of light, and the indoor temperature can become abnormally high. Also, in the winter, the indoor heat passes through these sheets with poor insulation properties and escapes to the outside, so the heat retention is very poor. It had a bad structure.

However, with the recent rise in oil prices, it is becoming impossible to produce agricultural products cost-effectively unless these agricultural greenhouses, which have poor thermal efficiency, are improved.

The present invention aims to solve these problems in view of the conventional problems, and the present invention is intended to solve the problems in the past. In order to adjust the amount of heat transferred, we welded both ends of the air flow path changing piece, which has a roughly L-shaped cross section and has a reflective material on one side, to the inner surface of two synthetic resin sheets that are placed opposite each other at a certain distance from above and below. To provide this device in which the change piece is attached by integral molding or the like, and the position of the change piece is displaced by changing the flow path of the incoming air, so that a reflective material can block the sunlight incident surface on the entire surface of the device. .

The details of the present invention will be explained based on illustrated embodiments.
Figures 1 to 3 in the drawings show embodiments according to the present invention.
The figure shows synthetic resin sheets 1, 1, such as vinyl chloride sheets and polyethylene sheets, placed opposite each other at a certain distance, and a partition wall 2... is provided between the sheets 1, 1, and between the partition walls 2. , one piece Al has a length approximating the distance between the sheets 1, 1, and each of the same pieces A2 is provided with a paint aluminum thin film containing aluminum powder, a reflective plate 3 made of a sheet containing aluminum powder, etc., and is approximately L-shaped. The length direction J side ends 5 of the air flow path changing piece 4 are attached to the upper and lower sheets 1, 1 by welding, integral molding, etc., and the changing piece 4 is shown in the solid line state and the imaginary line state in the figure. By displacing each other, the position of the reflecting plate 3 can be changed to block the sunlight incident direction indicated by the dotted line in FIG.
Or, as in i in the imaginary wavy line state, it is made to be parallel to the direction of incidence of sunlight.

In Figure 2, partition walls 2 are installed oppositely at twice the interval as in Figure 1, and the first
It is made up of substantially L-shaped air flow path changing pieces 4, 4 similar to those shown in the figure, arranged symmetrically with each other, and the respective opposite ends 5, 5 are connected to the upper and lower sheets 1, 1 by integrally welding, etc. In this embodiment, by changing each air flow path changing piece 4 from a solid line state to an imaginary line state and vice versa, the reflective material 3 can block the incident direction S of sunlight or allow it to enter. become parallel.

FIG. 3 shows the structure of FIG. 2 with the partition wall 2 removed, and the other structure is the same as that of FIG. 2.

As shown in FIG. 4, the device A according to the present invention is installed on the sunlight incident surface of an agricultural greenhouse, such as the roof, side wall, etc.
At the terminal, as shown in FIG. 5, an air feeding device 6 is connected, and an air feeding pipe 7 from the device is connected to each of the two flow paths formed by the L-shaped air flow path changing piece 4, and The L-shaped air flow path changing piece 4 shown in FIG. 3 can be displaced between a solid line state and an imaginary line state.

Therefore, if air is introduced in the state shown by the solid line in FIG. When air is introduced between the wall 2 and the L-shaped changing piece 4, the changing piece 4 is displaced to the imaginary line position, and the reflecting plate 3 is arranged in a unilateral state with respect to the direction of incidence of sunlight. Therefore, in the former state, the incident sunlight is blocked, and in the latter state, the sunlight is allowed to enter, and the two sheets 1, 1 form an inner and outer heat insulating layer to protect the interior of the room. Prevents heat from permeating and being lost to the outside. As described above, in the present invention, the approximately L-shaped air flow path changing piece 4 with the reflective material 5 provided between the two synthetic resin sheets 1, 1 is connected together by welding, integral molding, etc. Therefore, the space between the sheets 1 and 1 becomes a heat insulating layer, and the changing piece 4 with the reflective material 3 between the sheets 1 and 1 is displaced to form a reflective surface, or it can be eliminated to block sunlight. By adjusting the amount of incident light, it is possible to effectively adjust the amount of light and heat for the house where this device is installed.

[Brief explanation of the drawing]

1 to 3 are cross-sectional views of an embodiment of the device of the present invention, FIG. 4 is a cross-sectional view of an embodiment installed in a greenhouse, and FIG. 5 is a plan view showing the relationship between the device and an air supply device. 1...Sheet, 2...Division wall, 3...Reflector, 4
... Air flow path changing piece, 5... Side end, 6... Air feeding device, 7... Air feeding pipe.

Claims (1)

[Claims] 1. Between two synthetic resin sheets placed opposite each other at a certain distance, an air flow path changing piece with an interval length of approximately 1/2 of the total width between the sheets is placed so that it is approximately L-shaped. A device for adjusting the amount of transmitted light and heat, which comprises connecting both side edges of the flow path changing piece to the inner surfaces of two opposing sheets, and providing a reflective material on one side of the flow path changing piece.