JP2014105494A - Blind and double-glazed glass with build-in blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blind and a double-glazed glass with a built-in blind capable of maintaining an indoor light quantity with incident light and obtaining a light control state appropriate for an indoor human activity.SOLUTION: In a blind which has a plurality of slats juxtaposed in a vertical direction, the slats are provided with electrochromic layers which allows surface states thereof to be variably controlled between a transparent state and a specular state. Also, surface angles of the plurality of slats can be variably controlled. A window glass incorporating the blind has a pair of glass plates, parallel to each other with a predetermined distance in between, placed in a frame. The blind is installed in a space formed by the pair of glass plates and the frame.

Description

  The present invention relates to a blind having a function of adjusting the amount of light with respect to incident light, and a blind built-in multilayer glass.

  Patent Document 1 discloses a light control blind composed of a plurality of slats. The plurality of slats constituting the dimming blind are constituted by a glass substrate. An electrochromic film whose transmittance can be changed is provided on the surface of the glass substrate. Such a light control blind is arranged so as to cover the window of the room, and the incident light entering the room from the sun passes through the slat whose transmittance can be changed, so that the incident light The amount of light is adjusted.

  The dimming blind described in Patent Document 1 is a dimming blind in which the plurality of slats in the upper region and the plurality of slats in the lower region are separate regions, and the transmittance of the slats in each region is different. It has a function that enables such control.

  Therefore, according to the dimming blind described in Patent Document 1, since the transmittance can be controlled independently for each region, the amount of incident light can be set independently depending on the location. Dimming with a high degree of freedom for adjusting the amount of transmission is possible.

Japanese Patent Laid-Open No. 5-222884

  However, the dimming blind described in Patent Document 1 is only controlled to adjust the transmittance with respect to incident light entering the room through the slat, so that it is necessary to reduce the amount of incident light. Although effective, it is difficult to dimm without reducing the amount of light introduced into the room.

  Therefore, a main object of the present invention is to provide a blind and a window glass with a built-in blind that can maintain a light amount in a room by incident light and obtain a dimming state suitable for human activities in the room. is there.

The blind according to the present invention is a blind in which a plurality of slats are juxtaposed in the vertical direction, and the slats are provided with an electrochromic layer that can be variably controlled in either a transmission state or a mirror state, and the plane angle of the slats Is a blind that is variably controlled.
Moreover, it is preferable that the blind concerning this invention is divided | segmented into several area | region so that a blind may contain several slats, and the surface angle of the slat in an area | region is controlled independently for every area | region.
Furthermore, the blind according to the present invention is controlled so that a slat in a certain region is in a mirror surface state and a surface angle of the slat is substantially horizontal, and a slat in another region is in a transmissive state. It is preferable to be controlled as described above.
In the blind according to the present invention, a plurality of vertical slats and horizontal slats are alternately juxtaposed in the vertical direction, and the vertical slats and horizontal slats are electrochromic that can be variably controlled in either a transmission state or a specular state. A blind provided with a layer.
In the blind according to the present invention, it is preferable that the vertical slat and the horizontal slat are fixedly juxtaposed.
The double-glazed glass with a built-in blind according to the present invention is configured such that a pair of glass plates are fitted into a frame body in a state of being arranged in parallel with each other at a predetermined interval, and the blind according to the present invention is a pair of glass plates And a blind glass with a built-in blind disposed in a space formed by the frame.

According to the blind according to the present invention, in the blind in which a plurality of slats are juxtaposed in the vertical direction, the slat is provided with an electrochromic layer that can be variably controlled in either a transmission state or a specular state. Since the surface angle is variably controlled, the incident light from the sun is appropriately reflected by changing the surface angle of the slat in the mirror state while transmitting the incident light from the sun by the slat in the transmission state. You can get a blind that can.
Further, the blind according to the present invention is divided into a plurality of regions so that the blind includes a plurality of slats, and for each region, the surface angle of the slats in the region is independently controlled. Appropriate measures can be taken by controlling the change in angle and the amount of transmitted light in the room according to each situation.
Furthermore, the blind according to the present invention is controlled so that a slat in a certain region is in a mirror surface state and a surface angle of the slat is substantially horizontal, and a slat in another region is in a transmissive state. When controlled in such a manner, the light can be taken in the direction of the ceiling of the room by a slat that is mirror-like and horizontal, and the amount of incident light from the sun is dimmed by the slat that is controlled to be transmissive. be able to.
In the blind according to the present invention, a plurality of vertical slats and horizontal slats are alternately juxtaposed in the vertical direction, and the vertical slats and horizontal slats are electrochromic that can be variably controlled in either a transmission state or a specular state. Since the blind is provided with a layer, it is possible to obtain a blind that can change the dimming and lighting conditions in the room simply by controlling whether the vertical slats and horizontal slats are in a transmission state or a mirror state. it can.
Furthermore, in the blind according to the present invention, when the vertical slats and the horizontal slats are fixed and juxtaposed, there is no need to mechanically move the slats. Thus, it is possible to obtain a blind that can extend the life of the blind.
Since the double-glazed glass with built-in blind according to the present invention is a double-glazed glass with built-in blind according to the present invention, it has a heat insulation / sound insulation effect while dimming incident light entering the room from the sun. In addition, a blind built-in multilayer glass that can prevent dust and the like from adhering to the surfaces of the slats, vertical slats and horizontal slats can be obtained.

  According to the present invention, a blind and a window glass with a built-in blind that can maintain a light amount in a room by incident light and obtain a light control state suitable for human activities in the room can be obtained.

  The above-described object, other objects, features, and advantages of the present invention will become more apparent from the following description of embodiments for carrying out the invention with reference to the drawings.

It is a perspective view solution figure in an example about a 1st embodiment of a blind concerning this invention. It is an example about 1st Embodiment of the blind concerning this invention, Comprising: It is sectional drawing solution figure which shows the state with which this blind was attached to the window. It is a perspective view solution figure in the other example about 1st Embodiment of the blind concerning this invention. It is another example about 1st Embodiment of the blind concerning this invention, Comprising: It is sectional solution figure which shows the state with which this blind was attached to the window. It is a perspective view solution figure in an example about 2nd Embodiment of the blind concerning this invention. It is an example about 2nd Embodiment of the blind concerning this invention, Comprising: It is sectional drawing solution figure which shows the state with which this blind was attached to the window. It is an example of embodiment of the double glazing with which the blind concerning this invention was incorporated, Comprising: It is a cross-sectional solution figure which shows the state in which this double glazing with built-in blind was built in a part of wall.

  An example of the first embodiment of the blind according to the present invention will be described. FIG. 1 is a perspective view of an example of a first embodiment of a blind according to the present invention, and FIG. 2 is an example of the first embodiment of a blind according to the present invention. It is a cross-sectional illustration figure which shows the state attached to the window.

  The blind 10 shown in FIGS. 1 and 2 is used by being attached to a window 30, for example. The window 30 to which such a blind 10 is attached is constituted by, for example, a glass plate 32 and an upper casing 34, a lower casing 36 and a vertical rod (not shown) for fixing the glass plate 32, and a wall 40. It is built in a part of. Therefore, the blind 10 is attached so that at least the glass plate 32 in the window 30 is covered.

  The blind 10 includes a head box 12 that is fixed to the upper housing 34 of the window 30. A plurality of slats 14 are arranged downward from the head box 12, and a bottom rail 16 is provided at the lower end thereof. Accordingly, the plurality of slats 14 are juxtaposed in the vertical direction. When the blind 10 is attached to the window 30, the bottom rail 16 is located near the upper end of the lower casing 36 of the window 30. Further, one end of the head box 12 and one end of the bottom rail 16 and the other end of the head box 12 and the other end of the bottom rail 16 are supported by lifting cords 18 and 18, respectively. The rail 16 is held in parallel.

  The slat 14 is formed of, for example, a plate-like transparent glass, and the electrochromic layer 20 is provided on the surface of the slat 14. Similar to a general blind slat, the slat 14 is arranged such that the surface angle of the slat 14 can be changed from vertical to horizontal in a side view of the slat 14. When the slat 14 is set to a vertical surface angle, the blind 10 is closed, and when the slat 14 is set to a horizontal surface angle, the blind 10 is opened. Such an operation for changing the surface angle of the slat 14 to an open state or a closed state can be manually operated by a string (not shown) attached to the slat 14. Alternatively, the operations for opening and closing the slat 14 include, for example, a drive motor (not shown) for driving the slat 14 and a control unit (for controlling the surface angle of the slat 14). A control signal from the control unit is calculated based on sensor information obtained by detecting brightness with a sensor (not shown), and the drive motor is based on the calculated control signal. The surface angle of the slat 14 can be automatically operated by driving.

  As described above, the electrochromic layer 20 is provided on the surface of the slat 14. The electrochromic layer 20 can be controlled in two states, a transmission state and a mirror state, by applying a voltage. In addition, since the electrochromic layer 20 that is controlled to be in a transmissive state can be controlled so that the transmittance changes, the amount of incident light that passes through the room can be adjusted.

The electrochromic layer 20 provided on the slat 14 that can be controlled as described above can be manufactured as follows. That is, as a material for the electrochromic layer 20, AgNO ₃ (silver nitrate) is prepared at a concentration of 50 mM, TBABr (tetrabutylammonium bromide) is prepared as a supporting electrolyte at a concentration of 250 mM, and CuCl ₂ (copper (II) chloride) is prepared as a mediator at a concentration of 10 mM. An electrochromic solution is prepared by dissolving them in DMSO (dimethyl sulfoxide). And gel electrolyte is prepared by adding polyvinyl butyral (10 wt%) as a gelling agent to this electrochromic solution. The electrochromic layer 20 is produced by producing a bipolar cell by sandwiching the prepared gel electrolyte between a smooth ITO electrode (working electrode) and an ITO particle modified electrode (counter electrode) via a 500 μm spacer. The
The electrochromic layer 20 can be variably controlled to either a transmission state or a specular state by changing the magnitude of a DC voltage applied between the working electrode and the counter electrode.
Note that the electrochromic layer 20 may be provided in a transparent glass forming the slats 14.

  The blind 10 is composed of a plurality of slats 14 as described above. The blind 10 is divided into a plurality of slats 14 in the first region 22 located on the upper side of the blind 10 and a plurality of slats 14 in the second region 24 located on the lower side of the blind 10, The plurality of slats 14 in the first region 22 and the plurality of slats 14 in the second region 24 can be controlled differently for each region. The control performed in each region can be performed, for example, such that the surface angle of the slat 14 is independently vertical or horizontal for each region. Further, the state of the slat 14 can be controlled to be in a transmission state or a mirror surface state independently for each region. For example, the electrochromic layer 20 of the slat 14 in the first region 22 can be controlled to be in a transmissive state, and the electrochromic layer 20 of the slat 14 in the second region 24 can be controlled to be in a mirror state. . As described above, the area of the slat 14 in the blind 10 may be divided into two parts in the vertical direction, and further divided into four parts in the vertical and horizontal directions, or may be further divided into a plurality of areas. May be. By doing so, partial light shielding and daylighting can be realized.

  FIG. 1 is an example of the first embodiment of the blind 10, and is divided into a first region 22 on the upper side of the blind 10 and a second region 24 on the lower side of the blind 10. The blind 10 is shown. FIG. 2 is a cross-sectional view illustrating a state in which the blind 10 shown in FIG. 1 is attached to the window 30.

  1 and 2, the plurality of slats 14 in the first region 22 are controlled so that the surface angle of each slat 14 is vertical, and the electrochromic layer 20 is in a transmissive state. The controlled state is shown. When incident light I from the sun entering the room from the outside enters the first area 22 of the blind 10, the slats 14 of the first area 22 are controlled because they are in a transmissive state. The transmitted light T corresponds to the transmittance, and the incident light I enters up to a high position in the room.

  On the other hand, in the blind 10 described in FIGS. 1 and 2, the plurality of slats 14 in the second region 24 are controlled so that the surface angle of each slat 14 is horizontal, and the electrochromic layer 20 is a mirror surface. The state controlled to become a state is shown. When the incident light I from the sun entering the room from the outside enters the second region 24 of the blind 10, the slats 14 of the second region 24 are in a mirror state. Incident light I incident on the slat 14 in the state becomes reflected light R toward the ceiling in the room, and can brighten the room. Therefore, the brightness of the entire room can be maintained while controlling the amount of incident light I entering the room.

  In the blind 10 shown in FIGS. 1 and 2, the plurality of slats 14 controlled to be vertical in the first region 22 are controlled in a transmissive state, so that the sun from the outdoor to the indoor The incident light I incident on the plurality of slats 14 controlled to be in a mirror state and to be horizontal in the second region 24 is prevented from entering the incident light I directly from the indoor ceiling. Therefore, the brightness of the entire room can be maintained by the reflected light R toward the ceiling.

  Next, another example of the blind according to the first embodiment of the present invention will be described. FIG. 3 is a perspective view of another example of the blind according to the first embodiment of the present invention, and FIG. 4 is another example of the blind according to the first embodiment of the present invention. It is sectional sectional solution figure which shows the state by which this blind was attached to the window.

  The blind 10 shown in FIGS. 3 and 4 is also divided into a first region 22 on the upper side of the blind 10 and a second region 24 on the lower side of the blind 10 as in FIGS. 1 and 2. 1 shows a blind 10 with a configured configuration.

  In the blind 10 described in FIGS. 3 and 4, the plurality of slats 14 in the first region 22 are controlled so that the surface angle of each slat 14 is horizontal, and the electrochromic layer 20 is in a mirror state. The controlled state is shown. When incident light I from the sun entering the room from the outside enters the first region 22 of the blind 10, the plurality of slats 14 in the first region 22 are in a mirror state. Incident light I incident on the mirror surface slat 14 becomes reflected light R toward the indoor ceiling.

  On the other hand, in the blind 10 described in FIGS. 3 and 4, the plurality of slats 14 in the second region 24 are controlled so that the surface angle of each slat 14 is vertical, and the electrochromic layer 20 is transmitted. The state controlled to become a state is shown. When incident light I from the sun that enters the room from the outside enters the second area 24 of the blind 10, the plurality of slats 14 in the second area 24 are in a transmissive state. The transmitted light T corresponding to the transmitted transmittance is obtained, and the lighting on the lower side in the room becomes possible.

  Similarly to the blind 10 shown in FIGS. 1 and 2, the blind 10 shown in FIGS. 3 and 4 is incident on a plurality of slats 14 controlled to be mirror-like and horizontal in the first region 22. Since the incident light I becomes reflected light R toward the ceiling of the room, the reflected light R toward the ceiling is controlled so as to be vertical in the second region 24 while maintaining the brightness of the entire room. Since the plurality of slats 14 are controlled to be in a transmissive state, direct entry of the incident light I from the sun into the room from the outside can be prevented.

  In the conventional blind, it is difficult to capture light in the ceiling direction in the room, and it is difficult to obtain the brightness of the entire room by the incident light from the sun through the blind. However, according to the blind 10 according to the first embodiment, it is possible to reflect the incident light from the sun toward the ceiling by controlling the slat 14 controlled to be in a mirror surface state to be horizontal. Therefore, it is possible to perform daylighting in the direction of the ceiling in the room, and it can be expected to improve energy saving as an auxiliary device for lighting in the room.

  Moreover, according to the blind 10 concerning 1st Embodiment, since the slat 14 in which the electrochromic layer 20 which can control the transmittance | permeability can be permeate | transmitted incident light I can adjust the amount of solar radiation acquisition. Since it is possible, it is possible to prevent a temperature rise in the room due to heat rays, and as a result, an energy saving effect such as a reduction in cooling power can be expected.

  Furthermore, according to the blind 10 according to the first embodiment, as shown in FIGS. 1 to 4, when the area of the blind 10 is divided into two, a plurality of areas in the first area 22 and the second area 24 are divided. Since the slat 14 can be controlled to be horizontal or vertical, or controlled to be in a transmission state or a mirror state, the change in the angle of the incident light I from the sun and the amount of transmitted light T in the room can be controlled. By controlling according to each situation, an appropriate response can be taken. For example, in addition to the method of using the blind 10 as shown in FIGS. 1 to 4, all the slats 14 in the first region 22 and the second region 24 are controlled to be horizontal, and the mirror state is maintained. By controlling so that the incident light I from the sun can be all reflected light R, it is possible to increase the amount of lighting in the indoor ceiling direction.

  In addition, according to the blind 10 according to the first embodiment, a certain amount of room is obtained due to light scattering from the ceiling direction, such as when more light is desired in a region where a person is active in the room or when direct light is to be avoided. The light capture can be arbitrarily changed while ensuring the brightness of the. In addition, although it is arbitrary on the ceiling part of a room, if the mirror etc. which can scatter the taken-in light are arrange | positioned, the effect of ensuring the brightness of a room more is anticipated.

  Next, an example of the second embodiment of the blind according to the present invention will be described. FIG. 5 is a perspective view illustrating an example of the blind according to the second embodiment of the present invention. FIG. 6 is an example of a second embodiment of a blind according to the present invention, and is a cross-sectional view illustrating a state in which the blind is attached to a window.

  The blind 110 shown in FIGS. 5 and 6 is used by being attached to the window 30, for example. The window 30 to which such a blind 110 is attached includes, for example, a glass plate 32, and an upper housing 34, a lower housing 36 and a vertical rod (not shown) for fixing the glass plate 32. It is formed by being erected in a part of. Therefore, the blind 110 is attached so that at least the glass plate 32 in the window 30 is covered.

  The blind 110 includes a head box that is fixed to the upper casing 34 of the window 30. A plurality of vertical slats 14a and horizontal slats 14b are alternately arranged downward from the head box 12, and a bottom rail 16 is provided at the lower end thereof. Therefore, a set constituted by a plurality of vertical slats 14a and horizontal slats 14b is juxtaposed in the vertical direction. When the blind 110 is attached to the window 30, the bottom rail 16 is located near the upper end of the lower casing 36 of the window 30. Further, one end of the head box 12 and one end of the bottom rail, and the other end of the head box 12 and the other end of the bottom rail 16 are supported by lifting cords 18 and 18, respectively. 16 is held in parallel.

  As described above, the vertical slats 14a and the horizontal slats 14b are alternately arranged, and the side view is configured in an inverted T shape or a T shape, and thus a plurality of vertical slats configured in an inverted T shape are provided. A set of slats 14a and horizontal slats 14b is arranged (see FIGS. 5 and 6). The surface angles of the vertical slats 14a and the horizontal slats 14b are not variable but are fixedly arranged.

  The vertical slats 14a and the horizontal slats 14b are each formed of, for example, a plate-like transparent glass. An electrochromic layer 20 is provided on the surfaces of the vertical slats 14a and horizontal slats 14b. The electrochromic layer 20 can be controlled in two states, a transmission state and a mirror state, by applying a voltage. For example, it can be controlled independently of the vertical slat 14a and the horizontal slat 14b, either in a transmission state or in a mirror state. Since the electrochromic layer 20 controlled to be in a transmissive state can be controlled so that the transmittance changes, the amount of incident light transmitted into the room can be adjusted.

The electrochromic layer 20 provided on the vertical slats 14a and the horizontal slats 14b that can be controlled as described above is manufactured by the same method as in the first embodiment.
The electrochromic layer 20 can be variably controlled to either a transmission state or a specular state by changing the magnitude of a DC voltage applied between the working electrode and the counter electrode.
The electrochromic layer 20 may be provided in a transparent glass that forms the vertical slats 14a and the horizontal slats 14b.

  Next, control of each slat of the electrochromic layer 20 provided on the vertical slat 14a and the horizontal slat 14b will be described.

  FIG. 6 is an example of a second embodiment of the blind 110 according to the present invention, and is a cross-sectional view showing a state in which the blind 110 is attached to the window 30. The vertical slat 14a is in a transmissive state. The state which controlled the horizontal slat 14b so that it might become a mirror surface state is shown. In this case, since the vertical slat 14a is in a transmissive state, when the incident light I from the sun entering the room from the outside enters the vertical slat 14a, it becomes the transmitted light T according to the controlled transmittance, Daylighting can be performed on the lower side of the room. On the other hand, since the horizontal slat 14b is in a mirror surface state, the incident light I from the sun entering from the outside toward the room is reflected by the horizontal slat 14b to be reflected light R toward the indoor ceiling. Therefore, the brightness of the room can be obtained by setting the vertical slats 14a in the transmissive state and the horizontal slats 14b in the mirror state.

  Next, a case where the vertical slat 14a is controlled to be in a mirror state and the horizontal slat 14b is controlled to be in a mirror surface state or a transmission state will be described. In this case, since the vertical slat 14a is in a mirror surface state, the incident light I from the sun entering the room from the outside can be shielded by being reflected by the vertical slat 14a. In addition, by arranging the vertical slats 14a and the horizontal slats 14b without any gaps, it is possible to prevent the incident light I from entering the room from the gaps between the vertical slats 14a and the horizontal slats 14b. The effect can be enhanced.

  Next, a case where the vertical slats 14a are controlled to be in a transmissive state and the horizontal slats 14b are controlled to be in a transmissive state will be described. In this case, since both the vertical slats 14a and the horizontal slats 14b are in a transmissive state, the incident light I from the sun that enters the room from the outside can be transmitted through the room without being blocked. Such control is performed when the light shielding effect by the blind 110 is not required.

  Further, as described above, the blind 110 is composed of a plurality of vertical slats 14a and horizontal slats 14b. The blind 110 includes a plurality of sets of vertical slats 14 a and horizontal slats 14 b and a plurality of sets in the second region 24 positioned on the lower side of the blind 110. The vertical slats 14a and the horizontal slats 14b are divided into a plurality of sets in the first region 22 and the horizontal slats 14a and the horizontal slats 14b in the second region 24 and the horizontal slats 14a and the horizontal slats 14b The slat 14b can be controlled differently for each region. For example, a plurality of sets of vertical slats 14a and horizontal slats 14b in the first region 22 are controlled so as to be in a transmissive state, and a plurality of sets of vertical slats 14a in the second region 24 are The electrochromic layer 20 of the horizontal slat 14b can be controlled to be in a mirror state. As described above, the area of the slat 14 in the blind 110 may be divided into two parts in the vertical direction, and may be further divided into four parts in the vertical and horizontal directions, or may be further divided into a plurality of areas. May be. By doing so, partial light shielding and daylighting can be realized.

The blind 110 according to the second embodiment has the same effects as the blind 10 described above, and also has the following effects.
That is, according to the blind 110 according to the second embodiment, the electrochromic layer 20 provided on the surface of each of the vertical slats 14a and the horizontal slats 14b is controlled to be changed to a transmission state or a mirror state. Thus, since dimming and lighting conditions in the room can be changed, there is no need to mechanically move the vertical slats 14a and the horizontal slats 14b. Therefore, since the vertical slat 14 and the horizontal slat 14b are fixed and do not need to be moved mechanically, there is no failure due to mechanical wear and deterioration. Therefore, the blind 110 has excellent maintainability and has a long life. Can be extended.

  Next, the blind built-in multilayer glass in which the blind according to the present invention is built will be described. FIG. 7 is an example of an embodiment of a multi-layer glass with a built-in blind according to the present invention, and is a cross-sectional view illustrating a state in which the multi-layer glass with a built-in blind is built in a part of a wall. .

  The blind built-in multilayer glass 50 is formed by being built in a part of the wall 40. The blind built-in multilayer glass 50 includes, for example, an upper casing 34, a lower casing 36, and a vertical casing (which are frames) in a state where a pair of glass plates 52 and 54 are arranged in parallel with each other at a predetermined interval. (Not shown). The glass plate 52 is disposed on the outdoor side, and the glass 54 is disposed on the indoor side. The blinds 10 and 110 are incorporated and arranged in a space formed by the glass plate 52 and the glass plate 54 and the frame.

The blind built-in multilayer glass 50 has the same effects as the blinds 10 and 110 described above, and also has the following effects.
That is, according to the blind built-in multilayer glass 50, the blinds 10 and 110 can obtain the heat insulation / sound insulation effect while dimming the incident light entering the room from the sun. Further, according to the blind built-in multilayer glass 50, since the blinds 10, 110 are built in the space formed by the pair of glass plates 52, 54 and the frame body, the slat 14, the vertical slat 14a and the horizontal slat 14b It is possible to prevent dust and the like from adhering to the surface.

  In addition, the blinds arranged in the double-glazed glass are difficult to maintain. However, since the vertical slats 14a and the horizontal slats 14b are fixed to the blinds 110, there are no movable parts. Since there is no need for maintenance for the movement of the slats, it is particularly suitable as a blind that is incorporated and disposed in the built-in blind double-layer glass 50.

  The blind according to the above-described embodiment is divided into two regions in the vertical direction so as to include a plurality of slats, but is not limited thereto, and includes a plurality of slats in each region. You may make it divide into 4 divisions up and down, right and left, and may divide into a plurality of fields further.

  Further, the blind according to the second embodiment has a T-shape when viewed from the side, but is not limited to this, and one end or the other end in the longitudinal direction of the horizontal slat formed in a plate shape. By arranging a vertical slat on the side, it may be configured in an L shape in a side view.

  In the blind according to the second embodiment, only the surface angle of the vertical slat is variable, and when used in a mirror state, the reflected light is changed in the vertical direction to prevent light damage caused by the reflected light. You may do it.

  Moreover, although the blind built-in multilayer glass according to the above-described embodiment is formed by being built in a part of the wall, the present invention is not limited to this. It may be used by being incorporated in a plurality of window frames that can be opened and closed.

  The blind according to the present invention is, for example, mounted so as to cover a window of a building, and is suitable for maintaining human activity by blocking the direct incident light while maintaining the amount of light in the room by the incident light. It is suitably used as a blind that can realize a dimming state.

10, 110 Blind 12 Head box 14 Slat 14a Vertical slat 14b Horizontal slat 16 Bottom rail 18 Lifting cord 20 Electrochromic layer 22 First region 24 Second region 30 Window 32, 52, 54 Glass plate 34 Upper housing 36 Bottom Housing 40 Wall 50 Blind built-in double-glazed glass I Incident light T Transmitted light R Reflected light

Claims (6)

In a blind where a plurality of slats are juxtaposed vertically,
The slat is provided with an electrochromic layer that can be variably controlled in either a transmission state or a specular state,
A blind in which a surface angle of the slat is variably controlled. The blind is divided into a plurality of regions so as to include a plurality of the slats;
The blind according to claim 1, wherein a surface angle of the slat in the region is independently controlled for each region.   Among the plurality of regions, the slats in a certain region are controlled to be in a mirror surface state and the surface angle of the slats are substantially horizontal, and the slats in other regions are controlled to be in a transmission state. The blind according to claim 2. Vertical slats and horizontal slats are alternately juxtaposed in the vertical direction,
A blind, wherein the vertical slat and the horizontal slat are provided with an electrochromic layer that can be variably controlled in either a transmission state or a specular state.   The blind according to claim 4, wherein the vertical slats and the horizontal slats are fixedly juxtaposed. A pair of glass plates are configured to be fitted into a frame body in a state of being arranged in parallel with each other at a predetermined interval,
The blind built-in multilayer glass in which the blind according to claim 1 to 5 is incorporated and arranged in a space formed by the pair of glass plates and the frame.

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