Louvers and buildings

Abstract

To provide a louver and a building that increase the degree of freedom of opening of the louver. [Solution] The louver 16 includes a louver body 16a. The louver body 16a has a guide rail 20, a plurality of arms 22 attached to the guide rail 20, and a plurality of blades 23 attached to each of the arms 22. The arms 22 are rotatable relative to the guide rail 20. The blades 23 are rotatable relative to the arms 22.

Description

[Technical Field]

[0001] The present disclosure relates to louvers and buildings. [Background technology]

[0002] Patent Document 1 discloses a louver that includes a horizontal frame and a plurality of blades connected to the horizontal frame. The opening degree of the louver is changed by rotating the blades. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 1-119706 Summary of the Invention [Problem to be solved by the invention]

[0004] There is a demand for greater freedom in the opening degree of the louvers so that they can be adjusted more precisely. [Means for solving the problem]

[0005] (1) A louver that solves the above problem comprises a louver body having a guide rail, a plurality of arms provided on the guide rail, and a plurality of blades provided on each of the arms, wherein the arms are rotatable relative to the guide rail, and the blades are rotatable relative to the arms. According to this configuration, the arms and the blades are each rotatable, which increases the degree of freedom in the opening degree of the louvers.

[0006] (2) In the louver of (1) above, the arm is movable relative to the guide rail in the direction in which the guide rail extends. With this configuration, the louvers can be fully opened by gathering the arms together at the end of the guide rail.

[0007] (3) The louver of (1) or (2) above includes a control unit that controls the louver body, and the control unit controls the louver body based on a command from an operation unit operated by a user. According to this configuration, the user can adjust the opening degree of the louvers by operating the operating unit.

[0008] (4) In any one of the louvers (1) to (3) above, a control unit is provided that controls the louver body, and the control unit controls the louver body based on information about the environment in which the louver body is installed. According to this configuration, the opening degree of the louver can be adjusted in accordance with information about the environment in which the louver body is installed.

[0009] (5) A building that solves the above problem includes any one of the louvers described above in (1) to (4). According to this configuration, the arms and the blades are each rotatable, which increases the degree of freedom in the opening degree of the louvers.

[0010] (6) In the building described in (5) above, an atrium is provided connecting the lower floor to the upper floor, and the louvers are provided in the part of the atrium located between the lower floor and the upper floor.

[0011] This configuration makes it possible to adjust the amount of light entering the lower floor and control the line of sight between people on the lower floor and people on the upper floor. [Effects of the Invention]

[0012] The louvers and buildings of the present disclosure provide greater freedom in the opening degree of the louvers. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. [Figure 2] FIG. 2 is a cross-sectional view of the building taken along line 2-2 in FIG. [Figure 3]FIG. [Figure 4] FIG. 10 is a perspective view showing a rack and pinion mechanism of the louver. [Figure 5] FIG. 2 is a block diagram showing the configuration of a control system for the louver. [Figure 6] FIG. 2 is a schematic diagram showing a first embodiment of a louver. [Figure 7] FIG. 10 is a schematic diagram showing a second embodiment of the louver. [Figure 8] FIG. 10 is a schematic diagram showing a third embodiment of the louver. [Figure 9] FIG. 10 is a schematic diagram showing a fourth embodiment of the louver. [Figure 10] FIG. 10 is a schematic diagram showing a fifth embodiment of the louver. [Figure 11] FIG. 10 is a schematic diagram showing a sixth embodiment of the louver. DETAILED DESCRIPTION OF THE INVENTION

[0014] The louver 16 and the building 10 of this embodiment will be described with reference to FIGS. <Buildings> As shown in Fig. 1, the building 10 of this embodiment is a two-story residence. The building 10 has a first floor 10a as the lower floor and a second floor 10b as the upper floor. The building 10 is provided with an atrium 10c that connects the first floor 10a to the second floor 10b.

[0015] As shown in Fig. 2, the building 10 includes a first wall 11, a second wall 12, and a third wall 13. The first wall 11 and the second wall 12 face each other. The third wall 13 connects the first wall 11 and the second wall 12.

[0016] As shown in Figures 1 and 2, a first window 11a is provided in the first wall 11. The first window 11a is located on the second floor 10b. The first window 11a faces the atrium 10c. Sunlight enters the first floor 10a from the first window 11a through the atrium 10c. A second window 13a and a third window 13b are provided in the third wall 13. The second window 13a is located on the first floor 10a. The third window 13b is located on the second floor 10b.

[0017] As shown in Fig. 1, building 10 has a partition 14 located between first floor 10a and second floor 10b. Although not shown, partition 14 includes ceiling material that forms the ceiling of first floor 10a, beams, and floor material that forms the floor of second floor 10b. Handrail 15 is provided on the upper surface of partition 14.

[0018] 1 and 2, the building 10 is provided with louvers 16. In this embodiment, the louvers 16 are provided in a horizontal direction. The louvers 16 are provided in a portion of the atrium 10c located between the first floor 10a and the second floor 10b.

[0019] <Louver> The louver 16 will now be described in detail. 2 and 3, the louver 16 includes a louver body 16a. The louver body 16a includes a guide rail 20, a plurality of blade units 21, and a plurality of carriers .

[0020] Guide rail 20 extends in a direction in which first wall 11 and second wall 12 face each other. Guide rail 20 includes first guide rail 20a attached to partition 14 and second guide rail 20b attached to a portion of third wall 13 located between second window 13a and third window 13b.

[0021] As shown in FIG. 4, the guide rail 20 has a first rail component 201, a second rail component 202, and a third rail component 203. The first rail component 201 extends vertically. The second rail component 202 extends horizontally from the upper end of the first rail component 201. The third rail component 203 extends horizontally from the lower end of the first rail component 201. A rack 20c is provided on the upper surface of the third rail component 203. The extending direction of the rack 20c is the same as the extending direction of the guide rail 20. Note that the rack 20c is not shown in the figures other than FIG. 4.

[0022] 2 and 3, the blade unit 21 has two arms 22 and two blades 23. One of the two arms 22 is referred to as a first arm 22a, and the other is referred to as a second arm 22b. One of the two blades 23 is referred to as a first blade 23a, and the other is referred to as a second blade 23b. The blade 23 is located between the first arm 22a and the second arm 22b. The blade 23 extends horizontally in a direction perpendicular to the direction in which the guide rail 20 extends.

[0023] The blades 23 are connected to the arm 22 via a first rotating shaft 24. More specifically, a first end of the first blade 23a is connected to a first end of the first arm 22a via the first rotating shaft 24. A second end of the first blade 23a is connected to a first end of the second arm 22b via the first rotating shaft 24. A first end of the second blade 23b is connected to a second end of the first arm 22a via the first rotating shaft 24. A second end of the second blade 23b is connected to a second end of the second arm 22b via the first rotating shaft 24.

[0024] The first rotating shaft 24 is connected to the output shaft of a first motor 25. The first motor 25 is provided inside the arm 22. When the first motor 25 rotates the first rotating shaft 24, the blades 23 rotate integrally with the first rotating shaft 24. Therefore, the blades 23 can rotate relative to the arm 22 around the first rotating shaft 24. The rotation angle of all the blades 23 relative to the arm 22 is the same. When the thickness direction of the blades 23 is perpendicular to the extension direction of the arm 22, the first blade 23a and the second blade 23b form one large blade 230 (see FIG. 6).

[0025] 3, blade unit 21 is connected to two guide rails 20 via two carriers 26. More specifically, first arm 22a of blade unit 21 is connected to first guide rail 20a via carrier 26. Second arm 22b of blade unit 21 is connected to second guide rail 20b via carrier 26.

[0026] The carrier 26 has a carrier case 27, a second motor 28, a second rotating shaft 29, and a clutch (not shown). Note that the carrier case 27 is not shown in the drawings other than FIG. 3.

[0027] The carrier case 27 is disposed within the guide rail 20. The second motor 28 is housed in the carrier case 27. A first end of the second rotating shaft 29 is connected to the output shaft of the second motor 28. A second end of the second rotating shaft 29 is inserted into the center of the arm 22.

[0028] As shown in Fig. 4, the second rotating shaft 29 is inserted into a pinion 29a. The pinion 29a is engaged with the rack 20c. The pinion 29a is not shown in the figures other than Fig. 4. The clutch is configured to switch between a first coupled state in which the second rotating shaft 29 and the pinion 29a are coupled, and a second coupled state in which the second rotating shaft 29 and the arm 22 are coupled.

[0029] In the first coupled state, when second motor 28 rotates second rotating shaft 29, pinion 29a rotates integrally with second rotating shaft 29, thereby moving linearly relative to rack 20c in the direction in which rack 20c extends. As a result, carrier 26 moves in the direction in which guide rail 20 extends. Carrier 26 is guided by guide rail 20. Carrier 26 transports blade unit 21 in the direction in which guide rail 20 extends. Therefore, arm 22 is movable relative to guide rail 20 in the direction in which guide rail 20 extends.

[0030] In the second coupled state, when the second motor 28 rotates the second rotation shaft 29, the arms 22 rotate integrally with the second rotation shaft 29. Therefore, the arms 22 can rotate relative to the guide rail 20 around the second rotation shaft 29. The rotation angle of all the arms 22 relative to the guide rail 20 is the same.

[0031] When the arm 22 is moved relative to the guide rail 20, the clutch is controlled so that the arm 22 does not rotate integrally with the second rotating shaft 29 and the pinion 29a rotates integrally with the second rotating shaft 29. As a result, when the arm 22 is moved relative to the guide rail 20, the arm 22 is restricted from rotating relative to the guide rail 20. When the arm 22 is rotated relative to the guide rail 20, the clutch is controlled so that the arm 22 rotates integrally with the second rotating shaft 29 and the pinion 29a does not rotate integrally with the second rotating shaft 29. As a result, when the arm 22 is rotated relative to the guide rail 20, the arm 22 is restricted from moving relative to the guide rail 20.

[0032] As shown in Fig. 5, the louver 16 includes an operating unit 31. The operating unit 31 is operated by a user. The operating unit 31 may be, for example, a panel provided with switches or a touch panel. In this embodiment, the operating unit 31 is attached to the first wall 11 of the first floor 10a (see Fig. 1).

[0033] The user can adjust the opening degree of the louvers 16 by operating the operation unit 31. In this embodiment, the user can also operate the operation unit 31 to switch between an automatic control mode in which a control unit 33 (described later) automatically sets the opening degree of the louvers 16, and a manual control mode in which the user manually sets the opening degree of the louvers 16.

[0034] The louver 16 is equipped with a brightness sensor 32. The brightness sensor 32 is configured to be able to detect brightness. In this embodiment, the brightness sensor 32 is attached to the surface of the second wall 12 facing the void 10c (see FIG. 2). The brightness sensor 32 is located above the louver main body 16a. The brightness sensor 32 detects the brightness of the void 10c.

[0035] The louver 16 includes a control unit 33. The control unit 33 includes a processor 33a and a memory unit 33b. The processor 33a is, for example, a central processing unit (CPU) or a digital signal processor (DSP). The memory unit 33b includes a random access memory (RAM) and a read-only memory (ROM). The memory unit 33b stores program code or instructions configured to cause the processor 33a to execute processing. The memory unit 33b, i.e., a computer-readable medium, includes any available medium accessible by a general-purpose or special-purpose computer. The control unit 33 may be configured by a hardware circuit such as an application-specific integrated circuit (ASIC) or a field-programmable gate array (FPGA). The control unit 33, which is a processing circuit, may include one or more processors operating according to a computer program, one or more hardware circuits such as ASICs or FPGAs, or a combination thereof.

[0036] The control unit 33 controls the louver body 16a. Specifically, the control unit 33 controls the rotation of the blade 23 relative to the arm 22 by controlling the first motor 25. The control unit 33 controls the rotation and movement of the arm 22 relative to the guide rail 20 by controlling the second motor 28 and the clutch. Wiring (not shown) for supplying power to the first motor 25 and the second motor 28 is provided inside the louver body 16a.

[0037] The control unit 33 of this embodiment is connected to the operation unit 31. The control unit 33 controls the louver main body 16a based on instructions from the operation unit 31. In other words, the control unit 33 controls the louver main body 16a so that the opening degree of the louver 16 becomes the opening degree set by the user.

[0038] The control unit 33 of this embodiment controls the louver main body 16a based on information about the environment in which the louver main body 16a is installed (hereinafter referred to as "environmental information"). In this embodiment, the control unit 33 is connected to a brightness sensor 32. The control unit 33 obtains the brightness of the void 10c from the brightness sensor 32. The brightness of the void 10c is environmental information. When the louver 16 is set to automatic control mode, the control unit 33 controls the louver main body 16a based on the brightness of the void 10c. For example, when the brightness of the void 10c becomes brighter than a predetermined brightness, the control unit 33 reduces the opening degree of the louver 16.

[0039] [Operation of this embodiment] The operation of this embodiment will be described. The louver 16 includes a louver body 16a. The louver body 16a has a guide rail 20, a plurality of arms 22 attached to the guide rail 20, and a plurality of blades 23 attached to each of the arms 22. The arms 22 are rotatable relative to the guide rail 20. The blades 23 are rotatable relative to the arms 22.

[0040] FIG. 6 shows a first state of the louver 16. In the first state, the direction in which the arm 22 extends is the same as the direction in which the guide rail 20 extends. Therefore, the direction in which the arm 22 extends is the same as the horizontal direction. The thickness direction of the blade 23 is perpendicular to the direction in which the arm 22 extends. Therefore, the thickness direction of the blade 23 is the same as the vertical direction. The first blade 23a and the second blade 23b form a large blade 230. In the first state, multiple large blades 230 are lined up in the direction in which the guide rail 20 extends. The louver 16 is in a fully closed state.

[0041] As described above, in this embodiment, sunlight enters the first floor 10a from the first window 11a through the atrium 10c. As shown by the dashed-dotted line in Figure 6, in the first mode, sunlight from the first window 11a is blocked by the louver 16, and therefore the amount of light entering the first floor 10a is extremely small.

[0042] FIG. 7 shows a second embodiment of the louver 16. In the second embodiment, the direction in which the arms 22 extend is the same as the direction in which the guide rails 20 extend. Therefore, the direction in which the arms 22 extend is the same as the horizontal direction. The thickness direction of the blades 23 is the same as the direction in which the arms 22 extend. Therefore, the thickness direction of the blades 23 is the same as the horizontal direction. In the second embodiment, the multiple blades 23 are arranged at intervals in the direction in which the guide rails 20 extend.

[0043] 7, in the second embodiment, sunlight from the first window 11a enters the first floor 10a through the gaps between adjacent slats 23 in the direction in which the guide rail 20 extends. Therefore, the amount of light entering the first floor 10a in the second embodiment is greater than the amount of light entering the first floor 10a in the first embodiment.

[0044] 8 shows a third embodiment of the louver 16. In the third embodiment, the direction in which the arms 22 extend is the same as the direction in which the guide rails 20 extend. Therefore, the direction in which the arms 22 extend is the same as the horizontal direction. The thickness direction of the blades 23 is inclined with respect to the direction in which the arms 22 extend. In the third embodiment, the blades 23 are arranged at intervals in the direction in which the guide rails 20 extend.

[0045] 8, in the third state, sunlight from the first window 11a enters the first floor 10a through the gap between adjacent slats 23 in the extension direction of the guide rail 20. In this embodiment, the direction of incidence of sunlight from the first window 11a to the first floor 10a is inclined with respect to the vertical direction, and therefore the amount of light entering the first floor 10a in the third state is greater than the amount of light entering the first floor 10a in the second state.

[0046] FIG. 9 shows a fourth embodiment of the louver 16. In the fourth embodiment, the direction in which the arm 22 extends is perpendicular to the direction in which the guide rail 20 extends. Therefore, the direction in which the arm 22 extends is the same as the vertical direction. The thickness direction of the blade 23 is perpendicular to the direction in which the arm 22 extends. Therefore, the thickness direction of the blade 23 is the same as the horizontal direction. The first blade 23a and the second blade 23b form a large blade 230. In the fourth embodiment, multiple large blades 230 are arranged at intervals in the direction in which the guide rail 20 extends. The spacing between the large blades 230 in the fourth embodiment is greater than the spacing between the blades 23 in the second and third embodiments.

[0047] 9, in the fourth embodiment, sunlight from the first window 11a enters the first floor 10a through the gaps between the large paneling 230 that are adjacent in the direction in which the guide rail 20 extends. The amount of light entering the first floor 10a in the fourth embodiment is greater than the amount of light entering the first floor 10a in the third embodiment.

[0048] 10 shows a fifth embodiment of the louver 16. In the fifth embodiment, the direction in which the arm 22 extends is inclined relative to the direction in which the guide rail 20 extends. The thickness direction of the blade 23 is perpendicular to the direction in which the arm 22 extends. The first blade 23a and the second blade 23b form a large blade 230. In the fifth embodiment, the multiple large blades 230 are arranged at intervals in the direction in which the guide rail 20 extends.

[0049] 10, in the fifth mode, sunlight from the first window 11a enters the first floor 10a through the gap between the large paneling 230 that are adjacent in the direction in which the guide rail 20 extends. In this embodiment, the direction in which sunlight enters the first floor 10a from the first window 11a is inclined with respect to the vertical direction, and therefore the amount of light entering the first floor 10a in the fifth mode is greater than the amount of light entering the first floor 10a in the fourth mode.

[0050] FIG. 11 shows a sixth embodiment of the louver 16. In the sixth embodiment, the direction in which the arm 22 extends is perpendicular to the direction in which the guide rail 20 extends. Therefore, the direction in which the arm 22 extends is the same as the vertical direction. The thickness direction of the blade 23 is perpendicular to the direction in which the arm 22 extends. Therefore, the thickness direction of the blade 23 is the same as the horizontal direction. In the sixth embodiment, the first blade 23a and the second blade 23b form a large blade 230. Multiple large blades 230 are lined up in the direction in which the guide rail 20 extends.

[0051] In this embodiment, the arms 22 are movable relative to the guide rails 20 in the direction in which the guide rails 20 extend. In the sixth mode, the arms 22 are gathered at the end of the guide rails 20. The spacing between the large blades 230 in the sixth mode is smaller than the spacing between the blades 23 in the fourth mode. The louvers 16 are in a fully open state.

[0052] As shown by the dashed line in Figure 11, in the sixth configuration, sunlight from the first window 11a enters the first floor 10a without being blocked by the louvers 16. The amount of light entering the first floor 10a in the sixth configuration is greater than the amount of light entering the first floor 10a in the fifth configuration. The amount of light entering the first floor 10a in the sixth configuration is at its maximum.

[0053] In this way, since each of the arm 22 and the blade 23 is rotatable, the degree of freedom in the opening degree of the louver 16 is increased. Note that the configuration of the louver 16 is not limited to the above-mentioned first to sixth configurations. The inclination angle of the blade 23 relative to the arm 22 is not limited to the inclination angle of the third configuration and may be changed as appropriate. The inclination angle of the arm 22 relative to the guide rail 20 is not limited to the inclination angle of the fifth configuration and may be changed as appropriate.

[0054] [Effects of this embodiment] The effects of this embodiment will be described. (1) The building 10 is equipped with louvers 16. The louvers 16 have a louver body 16a. The louver body 16a has a guide rail 20, a plurality of arms 22 attached to the guide rail 20, and a plurality of blades 23 attached to each of the arms 22. The arms 22 are rotatable relative to the guide rail 20. The blades 23 are rotatable relative to the arms 22.

[0055] According to this configuration, the arm 22 and the blade 23 are each rotatable, which increases the degree of freedom in the opening degree of the louver 16. (2) The arm 22 is movable relative to the guide rail 20 in the direction in which the guide rail 20 extends.

[0056] According to this configuration, by gathering the arms 22 together at the end of the guide rail 20, the louvers 16 can be brought into a fully open state. (3) The louver 16 includes a control unit 33 that controls the louver main body 16a. The control unit 33 controls the louver main body 16a based on commands from an operation unit 31 that is operated by a user.

[0057] According to this configuration, the user can adjust the opening degree of the louvers 16 by operating the operating unit 31. (4) The control unit 33 controls the louver main body 16a based on the brightness of the void 10c, which is environmental information.

[0058] According to this configuration, the opening degree of the louvers 16 can be adjusted according to the brightness of the void 10c. (5) The building 10 has a void 10c that connects the first floor 10a to the second floor 10b. The louvers 16 are provided in the void 10c in a portion located between the first floor 10a and the second floor 10b.

[0059] According to this configuration, it is possible to adjust the amount of light entering the first floor 10a and control the line of sight between people on the first floor 10a and people on the second floor 10b. <Example of change> The above-described embodiments are examples of possible forms of the louver 16 and the building 10, and are not intended to limit the forms. The louver 16 and the building 10 may take forms different from those illustrated in the above-described embodiments. Examples of such forms include forms in which part of the configuration of the embodiments is replaced, modified, or omitted, or forms in which new configurations are added to the embodiments. Modified examples of the embodiments are shown below.

[0060] The building 10 is not limited to a house. The building 10 is not limited to being two stories tall. The building 10 may be three or more stories tall. In this case, the atrium is not limited to the atrium 10c connecting the first floor 10a and the second floor 10b. The atrium may be provided so as to connect the lower floor and the upper floor.

[0061] The louvers 16 may be provided in a suspended ceiling. The louvers 16 may be provided so as to extend vertically relative to an opening such as a window. The louvers 16 may be installed outdoors.

[0062] In blade unit 21, the number of blades 23 provided on arm 22 is not limited to two. In blade unit 21, the number of blades 23 provided on arm 22 may be three or more.

[0063] The arm 22 does not have to be movable relative to the guide rail 20 in the direction in which the guide rail 20 extends. Even in this case, at least the effect (1) of the above embodiment can be obtained. In the above embodiment, the operation unit 31 is provided on the first floor 10a, but this is not limiting. The operation unit 31 may be provided on the second floor 10b. The operation unit 31 may be provided on both the first floor 10a and the second floor 10b.

[0064] In the above embodiment, the operation unit 31 is attached to the first wall 11, but this is not limiting. The operation unit 31 may be attached to the second wall 12 or the third wall 13. The operation unit 31 may be, for example, a remote control. The remote control is configured to be able to communicate wirelessly with the control unit 33. The control unit 33 is configured to be able to communicate wirelessly with the remote control. In this case, the user can adjust the opening degree of the louvers 16 from any location by operating the remote control.

[0065] For example, a communication terminal such as a smartphone or tablet terminal may be used as the operation unit 31. The control unit 33 is configured to be able to wirelessly communicate with the communication terminal. The wireless communication method is, for example, Wi-Fi. In this case, the user can adjust the opening degree of the louvers 16 from any location by operating, for example, an application installed on the communication terminal.

[0066] In the above embodiment, the brightness sensor 32 is attached to the second wall 12, but this is not limiting. The brightness sensor 32 may be attached to, for example, the third wall 13 or the handrail 15 on a surface facing the void 10c.

[0067] The control unit 33 may control the louver body 16a based only on commands from the operation unit 31. Even in this case, at least the effect (1) of the above embodiment can be obtained. The control unit 33 may control the louver body 16a based only on the environmental information. Even in this case, at least the effect (1) of the above embodiment can be obtained.

[0068] The environmental information is not limited to brightness. The environmental information may be, for example, temperature, volume, season, time, or weather. The louver 16 may be equipped with a temperature sensor configured to detect temperature. The temperature sensor is attached, for example, to the surface of the second wall 12 facing the atrium 10c. The temperature sensor detects the temperature of the atrium 10c. The control unit 33 is connected to the temperature sensor. The control unit 33 controls the louver main body 16a based on the temperature of the atrium 10c. For example, when the temperature of the atrium 10c reaches or exceeds a predetermined temperature, the control unit 33 controls the louver main body 16a to reduce the amount of light entering the first floor 10a. This makes it possible to prevent the temperature of the first floor 10a from rising as the temperature of the atrium 10c rises.

[0069] In this modified example, the control unit 33 may estimate the temperature of the void 10c based on weather information about the residence acquired from a server such as a home server, for example. In this case, a temperature sensor is not required.

[0070] The louver 16 may be equipped with a volume sensor configured to detect the volume. The volume sensor is provided, for example, on the first floor 10a or the second floor 10b. The volume sensor detects the volume on the first floor 10a or the second floor 10b. The control unit 33 is connected to the volume sensor. The control unit 33 controls the louver main body 16a based on the volume on the first floor 10a or the second floor 10b. For example, when the volume on the first floor 10a or the second floor 10b reaches or exceeds a predetermined volume, the control unit 33 controls the louver main body 16a to reduce the opening degree of the louver 16. This makes it possible to suppress sound leakage from the first floor 10a to the second floor 10b or from the second floor 10b to the first floor 10a.

[0071] The control unit 33 may control the louver main body 16a based on the season. For example, the control unit 33 controls the louver main body 16a so that the amount of light entering the first floor 10a is reduced in summer compared to winter. This prevents the first floor 10a from becoming too hot in summer.

[0072] The control unit 33 may control the louver main body 16a based on time. For example, the control unit 33 may control the louver main body 16a so that the amount of light entering the first floor 10a decreases or increases at a predetermined time. The predetermined time is set by the user via the operation unit 31, for example.

[0073] The control unit 33 may control the louver main body 16a based on multiple pieces of environmental information. For example, when the season is summer, the weather is clear, and it is morning, the control unit 33 controls the louver main body 16a to reduce the amount of light entering the first floor 10a.

[0074] <Additional Notes> This specification discloses the following techniques: [Appendix 1] A louver comprising a louver body having a guide rail, a plurality of arms provided on the guide rail, and a plurality of blades provided on each of the arms, wherein the arms are rotatable relative to the guide rail, and the blades are rotatable relative to the arms.

[0075] [Appendix 2] In the louver described in Supplementary Note 1, the arm is movable relative to the guide rail in a direction in which the guide rail extends.

[0076] [Appendix 3] The louver described in Supplementary Note 1 further comprises a control unit that controls the louver body, and the control unit controls the louver body based on instructions from an operation unit operated by a user.

[0077] [Appendix 4] The louver described in Supplementary Note 1 further comprises a control unit that controls the louver body, and the control unit controls the louver body based on information about the environment in which the louver body is installed.

[0078] [Appendix 5] A building equipped with any one of the louvers in Appendix 1 to 4. [Appendix 6] In the building described in Appendix 5, there is a void connecting the lower floor to the upper floor, and the louvers are provided in a portion of the void located between the lower floor and the upper floor. [Explanation of symbols]

[0079] 10...building, 10a...first floor as lower floor, 10b...second floor as upper floor, 10c...open ceiling, 16...louver, 16a...louver body, 20...guide rail, 22...arm, 23...vane, 31...operating unit, 33...control unit.

Claims

1. Guide rails and a plurality of arms provided on the guide rail so as to be aligned in the extending direction of the guide rail; a plurality of blades provided on each of the plurality of arms; a louver body having the arm is rotatable relative to the guide rail; The blade is rotatable relative to the arm; A louver in which the arms arranged in the extending direction of the guide rail are independent of each other.

2. The louver according to claim 1 , wherein the arm is movable relative to the guide rail in a direction in which the guide rail extends.

3. a control unit for controlling the louver body; The louver according to claim 1 , wherein the control unit controls the louver body based on a command from an operation unit operated by a user.

4. a control unit for controlling the louver body; The louver according to claim 1 , wherein the control unit controls the louver body based on information about an environment in which the louver body is installed.

5. A building equipped with louvers and a void connecting the lower floor to the upper floor, The louver is Guide rails and a plurality of arms provided on the guide rail; a plurality of blades provided on each of the plurality of arms; a louver body having the arm is rotatable relative to the guide rail; The blade is rotatable relative to the arm; The louver is provided in a part of the atrium located between the lower floor and the upper floor in the building.

6. A building as described in Claim 5, wherein the arm is movable relative to the guide rail in the direction in which the guide rail extends.

7. A control unit for controlling the louver body, The building according to claim 5 , wherein the control unit controls the louver body based on a command from an operation unit operated by a user.

8. A control unit for controlling the louver body, The building according to claim 5 , wherein the control unit controls the louver body based on information about an environment in which the louver body is installed.

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