JP2646873B2 - blind - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blind which is arranged inside a glass window, a sash, a glass roof or the like to reduce the amount of solar radiation.

[0002]

2. Description of the Related Art A blind is installed near the inner surface of a window glass or a glass outer wall for the purpose of shielding direct sunlight or suppressing heat radiation due to sunlight. The blinds are configured such that rectangular thin plates are used as light shielding blades, are continuously connected in a plane direction, and change in inclination of the blades. It is possible to arbitrarily select the amount of incident light and the amount of indirect light by changing the inclination angle of the blade in accordance with the incident angle of solar radiation.

[0003]

However, since it is necessary to frequently change the direction of the blade in consideration of the temperature environment such as cooling and heating, it is troublesome, and it is desirable to automatically adjust the direction of the blade. . The present invention has been made in view of the above circumstances, and its purpose is to utilize heat radiation due to solar radiation, automatically activate the blind blades when the solar radiation is strong, and block the solar radiation, but otherwise, the solar radiation is not performed. It is an object of the present invention to provide a blind that allows incidence or that can be artificially shielded.

[0004]

In order to achieve the above object, a blind of the present invention has a cylindrical shape in an environment such as a room or lower at a normal temperature or lower, and has a shape deforming into a thin plate shape at a certain target temperature or higher. The blades made of the memory alloy are arranged and arranged in the plane direction, and are continuously connected and supported as they are in the arrangement direction. Among the support members that continuously support the blade for the purpose of artificially operating the blade, the support member directly connected to the blade includes a heating wire.

[0005]

[Function] When the blind is open, solar radiation enters between the blades. That is, when the blind is in the open state, the blades exhibit a martensitic phase that changes into a cylindrical shape. Therefore, the solar radiation entering between the blades impinges on the outer peripheral surface of the cylindrical blades, and due to the radiant heat and heat conduction at this time, the blades perform a martensitic transformation peculiar to the shape memory alloy, and are set in advance. When the temperature reaches the change temperature of the formed shape memory alloy, it changes to a horizontal thin plate-like austenite phase. When it becomes a thin plate, incident light is received by the entire surface of the blade and light does not pass through to the back surface side, thereby stably maintaining the transformation temperature. When the outside air temperature decreases or the solar radiation decreases, the temperature of the blades drops and returns to a cylindrical shape.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a cross section of a blind 1 according to the embodiment. The blind 1 is mainly made of a thin plate-like blade 3 formed in a rectangular shape from a plate made of a shape memory alloy itself or a plate having a shape memory alloy attached to a synthetic resin thin film, a metal thin film or the like. The blades 3 are arranged side by side in the horizontal direction and in the horizontal direction. The means for arranging and arranging is to fix and support the supporting members 7 in parallel at a fixed interval to the frames which are arranged near both end faces of the arranged blades 3, that is, the frames 5 which are arranged on both sides of the blades 3. The support 7 is used. The support member 7 is a heating wire (heater wire) or an aluminum tube through which the heating wire passes. Although not shown, a power source for generating heat from the heating wire is connected to the support member 7. The blades 3 are supported by the support members 7, and the blades 3 are horizontally arranged inside the frame 5. The position where the blade 3 is supported by the support member 7 is along the longitudinal direction of the blade 3 at the center position of the blade 3 in the short direction. In the embodiment, a balanced center position is selected in order to stabilize the support of the blade 3, but an eccentric position may be selected according to the shape when the blade 3 is deformed. The blade 3 of the embodiment is cylindrical at normal room temperature, that is, around 24 degrees Celsius,
It deforms into a thin plate at around 40 degrees Celsius. When the support member 7 is deformed into a cylindrical shape in the left-right direction, that is, when the blades 3 are adjacent to each other so that the diameter of the cylindrical shape becomes small,
The shapes may be such that they overlap. The embodiments do not overlap and have a single cylindrical shape. Such a blind 1 is mounted on the outer glass wall or inside the glass roof 9. The figure is mounted inside the glass roof 9 and slightly away from the glass roof 9.

As shown in FIG. 1A, when solar radiation is strong, the radiant heat of the blades 3 causes the cylindrical blades 3 to develop in a thin plate shape. Therefore, in the continuous direction of the blade 3, the blade 3
There is almost no gap between adjacent ones, and the transmittance of solar radiation entering from the roof 9 and the emissivity of the room are considerably reduced. Conversely, when the solar radiation becomes weaker, the temperature of the blades 3 decreases, and the blades 3 change their shape into a cylindrical shape. For this reason, the gap between the portions where the blades 3 are adjacent to each other widens, and the solar radiation transmittance and the indoor heat radiation rate increase. At night, there is no solar radiation, so the blades 3 remain cylindrical. Therefore, the heating wire of the support member 7 may be energized to transmit the heat of the heating wire to the blades 3 to artificially widen the blind 1, that is, to change the blades 3 into a horizontal shape. Needless to say, the blind 1 can be mounted inside the window glass. However, when the blind 1 is mounted inside the window glass, the heating wire of the support member 7 can be energized at night in winter to considerably improve the heating effect. The blade 3 emits radiant heat to provide a warm environment close to nature.

[0008]

As described above in detail, according to the blind of the present invention, a shape memory alloy which is cylindrical in an environment at a room temperature or lower and which is deformed into a thin plate at a certain target temperature or higher. Since the wings are made of the same material, the light-shielding area changes when they are arranged so as to face the incident sunlight. Since the temperature of the blade rises due to the heat radiation due to the solar radiation, there is an effect that when the solar radiation is strong, it can be automatically shielded. Therefore, the thermal load of the air conditioner due to the heat radiation from the glass surface is reduced and the blind effect is obtained without trouble such as changing the inclination angle of each blade by hand. Since the blades are arranged and supported in the plane direction as described above, they have a wide range of applications, such as being usable inside a glass roof. In addition, if the support material contains a heating wire, such as using or attaching a heating wire to the blade support material, the effect is that the blade can be heated artificially and the blind can be opened and closed as necessary. is there.

[Brief description of the drawings]

FIG. 1A is a cross-sectional view showing a state in which a blind according to an embodiment of the present invention blocks light. (B) It is sectional drawing which shows the state which the blind is transmitting light.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Blind 3 Blade 5 Frame 7 Supporting material 9 Glass roof

Claims (2)

(57) [Claims] 1. A blade made of a shape memory alloy, which is cylindrical in an environment such as a room or lower at a normal temperature or lower and deforms into a thin plate at a certain target temperature or higher, is aligned in a plane direction and continuously in the alignment direction. Blinds that are connected and supported. 2. The blind according to claim 1, wherein, of the support members that continuously support the blade, a support member directly connected to the blade includes a heating wire.