JPH0693689A - Dimmer - Google Patents

Abstract

PURPOSE:To obtain a light-weight simple dimmer capable of being installed to not only the window section of a building but also a roof section. CONSTITUTION:An airtight body 1 composed of an upper material 5 and a lower material 6 is divided into two of a first airtight layer 7 and a second airtight layer 8 by an internal membrane 2 while the opposite sections of the internal membrane 2 and the upper material 5 or the lower material 6 are formed in opaque sections 4. The first airtight layer 7 or the second airtight layer 8 is filled with a gas by a gas supply mechanism 3, and the internal membrane 2 and the upper material 5 or the lower material 6 are fast stuck, thus bringing the whole airtight body 1 to an opaque state, then shielding light.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light control device provided on a roof portion or a window portion of a building and capable of changing the illuminance inside the building by adjusting the amount of sunlight.

2. Description of the Related Art Conventionally, a rotary louver, a blind, a slit, a roller blind, a polarizing plate, a liquid crystal, etc. have been used for mounting on a window portion of a building to adjust the amount of sunlight. Japanese Patent Laid-Open No. Hei 4-1351 discloses a device that is attached to a roof portion of a building to adjust the amount of sunlight.
And Japanese Patent Laid-Open No. 4-108988. In these, cylindrical tubes are arranged in parallel, each tube is filled with air to expand, and the tubes are brought into contact with an adjacent tube or an intermediate member to eliminate a space between the tubes to shield light. .
On the contrary, the air is removed from the tubes to form a space between the tubes, and light is taken from this space.

However, the conventional rotary louvers and the like attached to the window portion have drawbacks such as large-scale equipment and large weight. For these reasons, the rotary louvers and the like are not suitable for the window. Mounting on a large roof is extremely inconvenient for reasons of economy and maintenance. Further, the appearance of a more excellent device is strongly desired as compared with the invention described in the above publication. The present invention was devised in view of these points, and an object thereof is to provide a light control device that can be attached not only to the window portion of a building but also to the roof portion.

[Means for Solving the Problems]
It is composed of an airtight body 1, an inner membrane 2, and a gas supply mechanism 3.
The airtight body 1 is composed of at least an upper member 5 and a lower member 6, and forms an airtight layer inside. The inner membrane 2 is provided in the airtight body 1 so as to divide the airtight layer into the first airtight layer 7 and the second airtight layer 8 and is rich in airtightness and flexibility. The gas supply mechanism 3 is a mechanism for filling the first airtight layer 7 or the second airtight layer 8 with gas in order to bring the inner membrane 2 into close contact with the upper member 5 or the lower member 6. Then, the inner membrane 2 and the upper member 5
Alternatively, an opaque portion 4 is formed at an opposite portion of the lower member 6 so as to shield light when both are in close contact with each other. At least the inner surface of the opaque portion 4 may be a glossy surface.

In the present invention having the above structure, in order to shield sunlight, the first airtight layer 7 (or the second airtight layer 8) is filled with gas by the gas supply mechanism 3. By this gas filling, the inner membrane 2 descends (or rises) and comes into close contact with the lower member 6 (or the upper member 5). In this state, since the opaque portion 4 is formed in the portion where the inner membrane 2 and the lower member 6 (or the upper member 5) are opposite to each other, the both opaque portions 4 are continuous and the entire hermetic body 1 becomes opaque. Therefore, the sunlight is blocked by the continuous opaque portion 4 (see FIG. 1). In order to collect sunlight, contrary to the above, the second airtight layer 8 (first airtight layer 7) is filled with gas by the gas supply mechanism 3 and at the same time the first airtight layer 7 (second airtight layer 8). The gas inside) is discharged. In that case, the gas in the second airtight layer 8 (first airtight layer 7) may be moved to the first airtight layer 7 (second airtight layer 8). When the second airtight layer 8 (first airtight layer 7) is filled with gas, the inner membrane 2 rises (falls) and the upper member 5 (lower member 6).
In close contact with. In this state, the opaque portions 4 are separated from each other, and thus sunlight is shined through the airtight body 1 (FIG. 2). By making at least the inner side surface of the opaque portion 4 a glossy surface, the opaque portion 4 is preferable because it is inconspicuous due to reflection and scattering of light and is a decorative side surface (FIG. 3).

1 to 3 show an embodiment of the present invention. In the present embodiment, the airtight body 1 is composed of a flexible, substantially elliptical transparent air tube, a transparent inner membrane 2 is provided at an intermediate position between the airtight body 1 and the upper member 5 of the airtight body 1. A striped opaque portion 4 is formed. The gas supply mechanism 3 includes two valves 9 and a fan 1 located between them.
0 and the air pipe 11, and the air of the first airtight layer 7 is moved to the second airtight layer 8 or vice versa by the rotation of the fan 10. Further, in this embodiment, the inner surface of the opaque portion 4 of the upper member 5 and the inner membrane 2 (the lower surface of the upper member 5 and the upper surface of the inner membrane 2) is a glossy surface. By doing so, the opaque portion 4 is inconspicuous due to the reflection and scattering of the light at the time of light collection, and the glossy surface promotes the reflection of the light, thereby improving the light collection efficiency. FIG. 4 shows an example of attachment of the device of the present invention. This is a glass roof 13
Installed in a large building. In this case, in the airtight body 1 of the device of the present invention (the first airtight layer 7 or the second airtight layer 8
Since air is constantly present in (either one of the above), not only dimming but also a heat insulating effect can be expected. FIG. 5 shows another embodiment of the present invention. This is because the upper member 5 is made of a highly rigid transparent plate, the lower member 6 and the inner membrane 2 are made of a material having a high flexibility, and the striped opaque portion 4 is formed on the lower member 6 and the inner membrane 2. It was formed. By configuring the upper member 5 with a plate having high rigidity, for example, when the air pressure of the first airtight layer 7 moves to the second airtight layer 8 or when the air pressure fluctuates, or under normal conditions, the first airtight layer is affected by some influence. 7 or the second airtight layer 8, even if the air pressure is insufficient, the airtight body 1 can be maintained as set without being deformed. FIG. 6 shows still another embodiment. In this embodiment, the upper member 5
Both the lower member 6 and the lower member 6 are made of a highly rigid transparent plate, and both members are connected by a connecting member 12, and an inner membrane 2 is provided at the center of the connecting member 12, and an opaque portion is formed between the inner membrane 2 and the lower member 6. Four
Is formed. In the apparatus shown in the present embodiment, both the upper member 5 and the lower member 6 are formed of the transparent plate having high rigidity, so that the shape of the airtight body 1 can be more reliably maintained as set in any state. . The plane shape of the airtight body 1 according to the device of the present invention is appropriately set, and is not limited to the shape shown in the above embodiment. Therefore, it is possible to adjust the light of a large space facility such as a membrane roof by an appropriate combination. Also, the opaque portion 4 is not limited to the striped shape,
Its shape and size are freely set. The materials for the airtight body 1 and the inner membrane 2 are not particularly limited as long as they are airtight and have high light transmittance. It can also be constructed by combining with a conventional daylighting building material such as top light glass, polycarbonate, film material and the like. Airtight body 1
As the gas to be charged into the air, air is the most suitable from the viewpoint of economy.

As described above, the present invention is structurally simple in that the inner film is brought into close contact with the upper member or the lower member by filling with gas to block and shine sunlight, and therefore, the roof is applied. Is easy to install, and is economical and easy to maintain. Further, by making at least the indoor side of the opaque portion a glossy surface, the opaque portion is inconspicuous, the decorative effect can be enhanced, and the lighting efficiency can be enhanced. Moreover, since the airtight body is always filled with gas, the heat insulating effect of the roof is excellent, and thus the weight of the entire roof can be reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is a configuration diagram showing an embodiment of the present invention.

FIG. 3 is a partially enlarged block diagram showing an embodiment of the present invention.

FIG. 4 is a configuration diagram showing an example of attachment of the present invention.

FIG. 5 is a sectional configuration diagram showing another embodiment of the present invention.

FIG. 6 is a cross-sectional configuration diagram showing still another embodiment of the present invention.

[Explanation of symbols]

 1 Airtight body 2 Inner membrane 3 Gas supply mechanism 4 Opaque part 5 Upper member 6 Lower member 7 First airtight layer 8 Second airtight layer 9 Valve 10 Fan 11 Air pipe 12 Connecting member 13 Glass roof

Claims (2)

[Claims] 1. At least an upper member for forming an airtight layer.
An airtight body (1) composed of (5) and a lower member (6), and in the airtight body (1), the airtight layer is a first airtight layer (7) and a second airtight layer (8) The inner membrane (2) which is rich in airtightness and flexibility and which is provided to divide the inner membrane (2) into close contact with the upper member (5) or the lower member (6). The layer (7) or the second airtight layer (8) and a gas supply mechanism (3) for filling the gas, and the inner membrane (2) and the upper member (5) or the lower member (6), A light control device having an opaque portion (4) formed in an opposite portion so as to shield light in a close contact state. 2. The light control device according to claim 1, wherein at least the inner surface of the opaque portion (4) is a glossy surface.