Building

Abstract

To provide a building in which communication equipment and the like can be placed in appropriate locations inside a building from the standpoints of both appearance and ease of use.SOLUTION: A housing with two or more floors comprises: a staircase 10 connecting a first floor and a second floor; a storage space 12 provided between two neighboring treads 14 in the staircase 10 and storing communication equipment T; and a cable installation space 50 which communicates with the storage space 12 and in which a communication cable C connected to the communication equipment T is installed.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a building, and more particularly to a building in which space is appropriately secured for arranging information and communication devices and cables. [Background technology]

[0002] In buildings such as houses, information and communication devices and cables (hereinafter also referred to as communication devices, etc.) are arranged using the space available within the building, but are often arranged in spaces that are less noticeable to users of the building, taking into consideration the impact on the appearance of the interior of the building. For example, in the building described in Patent Document 1, a cable connected to a home network device (called a "controller" in Patent Document 1) is laid using a hollow space within the sleeve wall (called the "third wall" in Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-95899 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, if communication devices, etc. are placed in hard-to-access locations, such as the back of a closet, out of concern for the appearance (look) of the interior of the building, there is a risk that the ease of handling and maintenance of the devices, etc. will be impaired. On the other hand, it is not rare for communication devices, etc. to be replaced or expanded after their installation. For this reason, the space in which communication equipment, etc. are placed is required to be a place that is not easily noticeable under normal circumstances, but when work involving such equipment, etc. is to be carried out, it is preferable that the space be a place that is easy to handle.

[0005] Therefore, the present invention has been made in consideration of the above-mentioned problems, and an object of the present invention is to provide a building in which information and communication equipment and cables can be appropriately arranged inside the building. [Means for solving the problem]

[0006] The above-mentioned problems are solved by the building of the present invention, which is a building having two or more floors, having a staircase connecting a first floor with a second floor located above the first floor, a storage space provided between two adjacent steps on the staircase, which stores information and communication equipment, and a cable installation space connected to the storage space, in which communication cables connected to the equipment are installed. In the above-mentioned building, communication devices and the like can be placed in appropriate locations inside the building from the standpoint of both appearance and ease of use (maintenance).

[0007] Furthermore, in the above-mentioned building, it is preferable that the upper step of the two steps is located at the top, is the highest step among the steps provided on the stairs, and is located at a lower position than the floor of the second floor. According to the above configuration, the communication cable can be properly laid by effectively utilizing the space between the floor of the second floor and the ceiling of the first floor.

[0008] Furthermore, in the above-mentioned building, it is more preferable that the staircase has an enclosing wall that surrounds the storage space between the two treads in the vertical direction, and the upper tread is placed on the upper surface of the enclosing wall in a state in which it can be removed from the enclosing wall. According to the above configuration, communication devices and the like can be arranged in a location inside the building where they can be more easily handled.

[0009] Furthermore, in the above-mentioned building, it is even more preferable that the surrounding wall is provided at the end of the storage space closer to the staircase entrance, has a first wall extending in the left-right direction of the staircase, and has a slit provided in the first wall. According to the above configuration, when the device placed in the accommodation space is, for example, a device that communicates wirelessly, the communication of the device can be performed appropriately.

[0010] Furthermore, in the above-mentioned building, it is even more preferable that a long body extending in the left-right direction is attached to the bottom surface of the upper tread, and when the upper tread is placed on the upper surface of the surrounding wall, the long body is adjacent to the inner wall surface of the first wall. According to the above configuration, when the removable upper step plate is placed on the upper surface of the surrounding wall, the upper step plate can be positioned and placed in an appropriate position.

[0011] In the above building, the surrounding wall may have two second walls extending from both ends of the first wall in the left-right direction toward the staircase. The staircase may have a partition plate provided at the end of the storage space closer to the staircase. In this case, it is even more preferable that the partition plate is connected to the end of each of the two second walls on the opposite side to the first wall. According to the above configuration, by surrounding the storage space with the surrounding wall and the partition plate, it is possible to make the communication devices and the like arranged in the storage space less visible, thereby improving the appearance (appearance) of the space in which the communication devices and the like are arranged.

[0012] In the above-mentioned building, the staircase may have a rising board located above the partition board and aligned vertically with the partition board across a gap. In this case, when the upper tread board is placed on the upper surface of the surrounding wall, the end of the upper tread board that is closer to the staircase entrance may be inserted into the gap. According to the above-mentioned configuration, the upper tread is stably maintained on the upper surface of the surrounding wall, thereby making it possible to prevent the upper tread from being unintentionally detached.

[0013] The above building may also have an extension member disposed between the ceiling of the first floor and the floor of the second floor and extending horizontally. The partition plate may be disposed adjacent to the extension member in the horizontal direction. In this case, it is preferable that a part of the cable laying space is present in the space between the extension member and the ceiling of the first floor in the vertical direction. According to the above configuration, the cable can be properly laid by utilizing the space located directly below the extension member.

[0014] Furthermore, in the above-mentioned building, it is more preferable that the partition plate has a through hole formed therein, the through hole being continuous with the space between the extension member and the ceiling of the first floor. According to the above configuration, the storage space and the space located directly below the extension member are connected through the through hole of the partition plate, so that a cable extending from an equipment placed in the storage space can be passed through the space located directly below the extension member and laid within that space. Effect of the Invention

[0015] According to the present invention, a building can be realized in which communication devices and the like can be arranged in appropriate locations inside the building from the standpoints of both appearance and ease of use (maintenance). [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a schematic diagram showing an internal structure of a building according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view of an upper section of a staircase provided in a building according to one embodiment of the present invention. [Diagram 3] FIG. 2 is a front view of the upper section of a staircase provided in a building according to one embodiment of the present invention. [Figure 4] 1 is a side cross-sectional view of an upper section of a staircase provided in a building according to one embodiment of the present invention. [Diagram 5] 1 is a side cross-sectional view of the top step of a staircase provided in a building according to one embodiment of the present invention. [Figure 6] FIG. 1 is a diagram showing the internal structure of a conventional building. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] <<About a building according to one embodiment of the present invention>> Hereinafter, one embodiment of the present invention (hereinafter, the present embodiment) will be described with reference to the accompanying drawings. In the drawings referred to in the following description, each component is illustrated somewhat simplified and schematic to make the description easier to understand. Also, the size (dimension) of each component and the interval between components shown in the drawings are different from the actual ones. In addition, in this specification, "orthogonal," "vertical," "parallel," and "horizontal" include the range of error generally accepted in the technical field of the present invention, and also include states where the directions are shifted within a range of less than a few degrees (e.g., 2 to 3°) from strictly orthogonal, vertical, parallel, and horizontal. In addition, unless otherwise specified, the position, orientation, posture, etc. of each member described in this specification are the position, orientation, posture, etc. of each member when it is in use. In addition, in this specification, the "up-down direction" means the vertical direction.

[0018] In the following, the building of this embodiment will be described assuming that it is a house H (more specifically, a detached house) shown in Fig. 1. However, this is not limited thereto, and the building of the present invention may be a building other than a house, specifically, a store, a factory, a building, a warehouse, a public facility, a commercial facility, or the like.

[0019] House H is a building having two or more floors, and in the case shown in FIG. 1, it is a two-story house. Information and communication devices are installed in house H, and information and communication can be used in each room in house H. Here, information and communication includes communication with external devices (e.g., servers, etc.) via the Internet, etc. In other words, in house H, residents can operate a PC (Personal Computer), a smartphone, a tablet terminal, and Internet-compatible home appliances, etc., to receive various information and data from external devices, and also transmit information and data to external devices. Information and communication can also include electrical communication and optical communication.

[0020] Information and communication devices (hereinafter, communication devices) are devices such as terminal devices and relay devices required for carrying out information and communication, and specifically include routers, modems, switching hubs, etc. Communication devices may also include devices that communicate wirelessly, such as wireless routers.

[0021] The information communication includes communication between devices installed in the house through a network (home network) established in the house. Specifically, the house H is equipped with a Home Energy Management System (HEMS), and a home server (home gateway) (not shown) may control remotely controllable devices installed in the house H through the home network. The home server may also collect data indicating the operating status of each electrical device in the house for each device through the home network, and tally up the data to monitor the power consumption status in the house.

[0022] The internal structure of the house H is generally the same as that of a typical two-story house, except for the stairs 10 and the installation path of the communication cable C, which will be described later. In addition, for the purpose of connecting a line for information communication (e.g., a line for the Internet) to the communication device in the house H, a communication cable (hereinafter, a lead-in cable Ca) is installed from outside the house H into the house H, as shown in Fig. 1. This lead-in cable Ca is installed, for example, by utilizing the space in the attic to a predetermined position in the attic, and is then run along the walls of the house H to approach the communication device, and is finally connected to a terminal of the communication device.

[0023] 1, a communication cable C extends from the communication device toward each room in the house H. The communication cable C is laid using a cable laying space 50 provided in the house H, and an end of the communication cable C is connected to a terminal device installed in each room, or to a socket (jack) of a power outlet I provided on the wall or the like of the room.

[0024] Incidentally, in conventional houses H, communication devices such as routers, modems, and hubs are sometimes placed in places that are difficult for residents of the house H to see, such as the back of a closet K or a corner of a room, in order to make the devices less noticeable, as shown in Fig. 6. While communication devices placed in such places are less noticeable, they are also difficult to access, making them difficult to use and maintain. In particular, when communication devices are placed in the back of closet K, in order to access the communication devices, it is necessary to clear away items such as clothes that are placed in the front of closet K, which is time-consuming.

[0025] Furthermore, if wireless communication devices are placed at the back of closet K, and clothes or other items are placed at the front of closet K, the radio waves sent and received by the communication devices may not be able to propagate easily, which may result in poor communication. In that case, measures must be taken, such as installing additional relay devices that function as boosters, so that radio waves from the communication devices can reach other rooms.

[0026] Furthermore, if it is difficult to access the location where the communication devices are installed, it becomes difficult to perform maintenance on the devices, replace them with new devices, and add communication devices at that location. Furthermore, when multiple communication devices and communication cables C are installed in the limited space of a closet K, the communication devices and communication cables C may become crowded in the space. In this case, it is difficult to visually check the laying path of the communication cables C, and the appearance is not desirable. Furthermore, if communication devices are installed at the back of the closet K, the wiring distance from the communication devices to each room will be longer, and the amount of communication cables C to be laid will increase accordingly, which may make the cable laying work difficult.

[0027] In addition, communication devices are sometimes placed in relatively high places to make them difficult for residents to see, but in such cases, maintenance work on the devices must be done while standing on a stepladder, etc. This means that the work is done at a height, and it is necessary to take measures to ensure safety or to hire a professional company to do the work.

[0028] In contrast, in this embodiment, communication devices are arranged in appropriate locations from the standpoint of appearance and ease of use (maintenance) inside the house H. Specifically, in this embodiment, as shown in Figures 1 to 5, an accommodation space 12 is provided in a space where a staircase 10 is installed, and communication devices such as a router and a hub are arranged (accommodated) in the accommodation space.

[0029] As shown in FIG. 1, the staircase 10 connects the first floor (corresponding to the first floor) with the second floor (corresponding to the second floor) directly above, and in this embodiment, is installed in a stairwell F as an open-ceiling space provided in a house H. Here, the staircase 10 may be a straight staircase or a spiral staircase. The lower end of the staircase 10 (i.e., the end on the first floor side, more specifically, the step rising from the floor surface of the first floor) corresponds to the entrance, and the upper end (i.e., the end on the second floor side, more specifically, the step hanging down from the floor surface of the second floor) corresponds to the entrance. In addition, the left-right direction of the stairs when viewed from the front corresponds to the width direction of the stairs, and will be simply referred to as the "width direction" below.

[0030] 2, in this embodiment, a storage space 12 for storing a communication device (hereinafter, communication device T) is provided between two vertically adjacent treads 14 on the staircase 10. Hereinafter, of the two adjacent treads 14, the one located above will be referred to as the upper tread 14a, and the one located below will be referred to as the lower tread 14b.

[0031] The size of each of the upper step 14a and the lower step 14b may be the same as that of a step used in a general staircase, for example, the width is about 820 mm and the depth is about 220 mm. The height difference between the step surface of the upper step 14a and the step surface of the lower step 14b, i.e., the step height, is the same as that of a normal staircase, and is about 200 mm to 220 mm. As a result, a space with a depth of about 200 mm, a height of about 200 mm, and a width of about 800 mm is secured as the storage space 12 between the step surface of the upper step 14a and the lower step 14b. On the other hand, an optical network unit (ONU), which is an example of the communication device T, has a depth of about 120 mm, a height of about 30 mm, and a height of about 200 mm. Considering this, the storage space 12 having the above size can sufficiently store the optical network unit and other communication devices T.

[0032] In this embodiment, as shown in Fig. 3, the upper tread 14a is located at the top of the treads 14 provided on the staircase 10, and is located one step lower than the floor of the second floor (the second floor). As shown in Figs. 3 to 5, a riser 16 is disposed on the tread surface of the upper tread 14a at a position adjacent to the end of the tread surface on the side closer to the descending entrance of the staircase 10 (hereinafter, also referred to as the back side for convenience) as a rising board that rises vertically toward the floor of the second floor. The height of the riser 16 is preferably about 200 mm to 220 mm.

[0033] The staircase 10 of this embodiment also includes a surrounding wall 18 surrounding the storage space 12, as shown in Fig. 2. The surrounding wall 18 is disposed between the two treads (i.e., the upper tread 14a and the lower tread 14b) in the vertical direction, and has a substantially U-shaped shape when viewed from directly above. In other words, as shown in Fig. 2, the surrounding wall 18 has a first wall 20 made of a flat plate extending linearly in the width direction, and two second walls 22 made of flat plates extending linearly from both ends of the first wall 20 in the width direction toward the rear side.

[0034] The first wall 20 corresponds to a kick board (front board), is provided at the end of the storage space 12 closer to the top of the stairs 10 (hereinafter, for convenience, also referred to as the front side), and has a width that is approximately the same length as the upper tread 14a. As shown in Figs. 2 and 3, the first wall 20 is provided with a slit 30 penetrating the first wall 20. This slit 30 is provided for the purpose of passing radio waves for wireless communication. In other words, when a wireless communication type communication device T is stored in the storage space 12, the communication device T can properly transmit and receive radio waves through the slit 30. Although rectangular slits 30 are formed in FIGS. 2 and 3, the shape of the slits is not particularly limited, and may be, for example, circular or elliptical, or may be a polygon other than a square.

[0035] In this embodiment, since the accommodation space 12 is provided between the first and second floors, radio waves for wireless communication output from the communication device T in the accommodation space 12 can easily reach both the rooms on the first floor and the rooms on the second floor. Also, since the accommodation space 12 is provided between the first and second floors, the laying path of the communication cable C laid from the communication device T in the accommodation space 12 to each room can be set to be relatively short.

[0036] The two second walls 22 are spaced apart from each other in the width direction, and when the staircase 10 has beams 28 at both ends in the width direction, the second walls 22 are disposed inside the beams 28 and adjacent to the beams 28 as shown in Fig. 2. Each second wall 22 has a depth that is approximately the same length as the upper tread 14a.

[0037] The surrounding wall 18 configured as above supports the upper step 14a, and specifically, as shown in Fig. 4, the upper step 14a is placed and supported on the upper surface of the surrounding wall 18 (specifically, on the upper surfaces of the first wall 20 and the two second walls 22). In other words, by providing the surrounding wall 18 on which the upper step 14a is placed, it is possible to ensure the strength (support strength) to support the upper step 14a while providing the storage space 12 directly below the upper step 14a. As a result, when a person steps on the upper step 14a, the load can be appropriately received by the surrounding wall 18.

[0038] 5, in this embodiment, the upper step 14a is placed on the upper surface of the surrounding wall 18 in a state in which it can be removed from the surrounding wall 18. As a result, when the communication device T in the storage space 12 is handled for maintenance or the like, the upper end of the storage space 12 is opened by removing the upper step 14a, exposing the inside of the storage space 12, and the communication device T can be easily accessed. Furthermore, by exposing the inside of the storage space 12, it becomes easy to check the state and arrangement position, etc., of each communication device and communication cable C arranged in the storage space 12. Furthermore, by opening the upper end of the storage space 12, it becomes easier to add a new communication device T and arrange (store) it in the storage space 12.

[0039] 2 and 5, a slip-prevention rail 26 is attached to the bottom surface of the upper tread 14a as a long body extending in the width direction. The slip-prevention rail 26 is made of, for example, a square timber, and is disposed on the bottom surface of the upper tread 14a at a position slightly set back from the front end of the upper tread 14a (more specifically, by a length corresponding to the nosing). The total length of the slip-prevention rail 26, i.e., the length in the width direction, is approximately the same as the distance between the two second walls 22. However, this is not limited thereto, and the total length of the slip-prevention rail 26 may be several mm to several cm shorter than the distance between the two second walls 22.

[0040] When the upper step 14a is placed on the upper surface of the surrounding wall 18, as shown in FIG. 4, the front end face of the anti-slip rail 26 is adjacent to the inner wall surface of the first wall 20. When the total length of the anti-slip rail 26 is substantially the same as the distance between the two second walls 22, the anti-slip rail 26 is adjacent to the inner wall surface of each second wall 22 at its end face in the width direction. This allows the upper step 14a to be appropriately positioned so that it is positioned in the correct position when placed on the upper surface of the surrounding wall 18. Also, when the upper step 14a is placed on the upper surface of the surrounding wall 18, the position of the upper step 14a can be prevented from shifting relative to the surrounding wall 18.

[0041] In this embodiment, the staircase 10 has a partition plate 24 provided at the end on the far side of the storage space 12, as shown in Figs. 2 and 5. The partition plate 24 is connected to the end of each of the two second walls 22 on the opposite side (i.e., the far side) from the first wall 20, and surrounds the storage space 12 together with the surrounding wall 18, separating the inside and outside of the storage space 12. To explain in more detail, the partition plate 24 is a fascia board, and separates the storage space 12 from the cable installation space 50 located directly below the girth 40 described later. The partition plate 24 is made of a plate material having the same width and height as the first wall 20, and is arranged directly below the top rise 16 with a slight gap 34 between the top surface of the upper tread 14a and the adjacent rise 16 (hereinafter, the top rise 16), as shown in Fig. 5.

[0042] In other words, the riser 16 of the top step is located above the partition plate 24, and is arranged vertically side by side with the partition plate 24 across a gap 34. Here, the size (vertical length) of the gap 34 is approximately equal to the thickness of the upper tread 14a. In this embodiment, as can be seen from Figs. 4 and 5, when the upper tread 14a is placed on the upper surface of the surrounding wall 18, the end 36 on the rear side of the upper tread (i.e., the side closer to the descending entrance of the staircase 10) is inserted into the gap 34. This prevents the upper tread 14a from shifting out of position, or more precisely, from flapping in the vertical direction, and allows the upper tread 14a to be more stably maintained on the upper surface of the surrounding wall 18.

[0043] Regarding the configuration around the storage space 12, house H (more specifically, the frame of house H) has girths 40 arranged between the ceiling of the first floor and the floor of the second floor, as shown in Figures 4 and 5. Girths 40 correspond to extension members extending horizontally, and are made of steel such as channel steel. Beams 38 (floor beams) extending in a direction perpendicular to girths 40 are joined to girths 40, as shown in Figures 4 and 5.

[0044] Additionally, a floor panel 42 constituting the second floor floor is disposed directly above the girth 40, and a ceiling panel 44 constituting the first floor ceiling is disposed directly below the girth 40. The first floor ceiling panel 44 is suspended at a position lower than the underside of the girth 40 by a hanging fitting (not shown). Therefore, as shown in Figures 4 and 5, a space is provided between the girth 40 and the beams 38 and the ceiling panel 44 (i.e., the first floor ceiling) in the vertical direction. This space corresponds to the attic space.

[0045] 4 and 5, the above-mentioned partition plate 24 is disposed adjacent to the girth 40 in the horizontal direction, and more specifically, is disposed next to the girth 40 with a plasterboard 46 sandwiched between the partition plate 24 and the girth 40. The partition plate 24 is fixed to the plasterboard 46 and the girth 40 with screws 48 shown in FIG. 2. As a result, the partition plate 24, as a fascia board, covers and conceals the girth 40 so that the small end face (extending end face) of the girth 40 cannot be seen from the storage space 12 side.

[0046] 2 and 5, the partition plate 24 is provided with a through hole 32. In the case shown in Fig. 2, the through hole 32 has a relatively wide rectangular shape, but the shape of the through hole 32 is not particularly limited and may be a circle, an ellipse, or a polygon other than a rectangle. The number of through holes 32 provided in the partition plate 24 is also not particularly limited, and two or more may be provided.

[0047] The through hole 32 is continuous with the space between the girth 40 and the ceiling of the first floor, that is, the ceiling space. To explain in more detail, the height (depth) of the ceiling space is generally about 400 mm to 500 mm. On the other hand, the distance between two adjacent steps 14 in the staircase 10, in other words, the step, is about 200 to 220 mm. Therefore, the storage space 12 provided between the upper step 14a and the lower step 14b is in a range of about 200 mm to 400 mm below the floor of the second floor, which is at the same level as the ceiling space. In light of this point, in this embodiment, the communication cable C is laid using the ceiling space, more specifically, the space located directly below the girth 40.

[0048] More specifically, a communication cable C is connected to the communication device T arranged in the accommodation space 12, and the communication cable C is laid toward each room on the first and second floors of the house H. In this embodiment, a space communicating with the accommodation space 12 is used as the cable laying space 50 in which the communication cable C is laid. Specifically, a part of the cable laying space 50 exists in the attic space (the space provided between the girth 40 and the ceiling on the first floor in the vertical direction).

[0049] That is, the communication cable C connected to the communication device T in the accommodation space 12 exits from the accommodation space 12 through the through hole 32 of the partition plate 24, as shown in Figures 2 and 4. Meanwhile, the accommodation space 12 is connected to the space located directly below the girth 40 via the through hole 32. Therefore, the communication cable C exiting from the accommodation space 12 can be passed through the attic space including the space located directly below the girth 40 and installed using the attic space.

[0050] With the above configuration, the communication cable C is laid to each room in the house H along a suitable route, specifically a route that is not easily noticeable to users of the house H. As a result, the communication cable C can be laid in the house H in an attractive manner (without affecting the appearance of the interior). Furthermore, with the above configuration, it becomes easier to add and lay a new communication cable C and to replace an old communication cable C with a new cable.

[0051] In this embodiment, the lead-in cable Ca, which is a communication cable for line lead-in, is led into the house H through the attic space of the house H, and is laid along the wall of the staircase F or the wall around the staircase F toward the aforementioned accommodation space 12. The lead-in cable Ca then enters the accommodation space 12 and is connected to the communication device T arranged in the accommodation space 12. This allows the lead-in cable Ca to be connected to the communication device T in the accommodation space 12 via a relatively short route.

[0052] <<Other embodiments>> Although one embodiment of the building of the present invention has been described above, the above embodiment is merely an example for facilitating understanding of the present invention and does not limit the present invention. In other words, the present invention can be modified and improved without departing from the spirit of the present invention. Moreover, it goes without saying that the present invention includes equivalents thereof. Furthermore, the materials and design dimensions of each part used in the present invention can be freely set depending on the application of the present invention and the state of the art at the time of implementing the present invention.

[0053] In the above embodiment, a configuration has been described in which the upper step 14a is placed on the surrounding wall 18 that surrounds the storage space 12, and the upper step 14a can be removed from the surrounding wall 18 when handling the communication device T in the storage space 12. However, the present invention is not limited to this, and a configuration in which the upper step 14a is fixed in an immovable state, while the surrounding wall 18 and the lower step 14b can move (slide) relative to the upper step 14a in a drawer-type manner, may also be used. Even with such a configuration, the storage space 12 can be exposed when handling the communication device T in the storage space 12. However, in the above configuration, when the surrounding wall 18 and the lower step 14b are pulled out, the communication device T in the storage space 12 also moves. Considering this point, in the above configuration, it is necessary to secure a longer slack in the communication cable C connected to the communication device T. Also, when the surrounding wall 18 and the lower step 14b are pulled out to expose the storage space 12, the storage space 12 is exposed to an extent according to the amount of pulling out. Therefore, if the amount of pulling out is not sufficiently secured, the exposed area of ​​the storage space 12 becomes narrow, and in that case, it becomes difficult to handle the communication device T in the storage space 12. Also, for the configuration in which the surrounding wall 18 and the lower step 14b are pulled out, the structure to realize it and the parts required for the structure are complicated, and the manufacturing costs are high. Considering the above points, the above embodiment is more preferable.

[0054] In the above embodiment, a two-story house (building) has been described as an example, but the present invention is not limited to this and can be applied to buildings having three or more floors. In a building having three or more floors, the staircase 10 in which the storage space 12 for the communication device is provided is not limited to a staircase connecting the first floor and the second floor, and the storage space 12 may be provided in a staircase connecting a floor above the second floor (first floor) and a floor (second floor) located above the first floor.

[0055] In the above embodiment, the storage space 12 is provided between the step 14 located on the top step of the staircase 10 (i.e., the step 14 closest to the exit) and the step 14 located one step lower. However, this is not limited to this, and the storage space 12 may be provided between the step 14 located on an intermediate step of the staircase 10 and the step 14 adjacent to that step 14 in the vertical direction. On the other hand, in the above embodiment, the storage space 12 is provided between the step 14 located at the top step of the staircase 10 and the step 14 located one step lower, so that the storage space 12 is continuous with the ceiling space including the space located directly below the girth 40. In the above embodiment, the ceiling space can be utilized to lay the communication cable C in a suitable route. In this respect, the above embodiment is more preferable. [Explanation of symbols]

[0056] 10 stairs 12 Containment Space 14 Treadboard 14a Upper tread 14b Lower tread 16 Riser (rising board) 18 Enclosure Wall 20 1st wall 22 Second wall 24 Partition 26 Anti-slip rail (long body) 28 digits 30 Slit 32 Through hole 34 Gap 36 Back end 38 Beam 40 Girth (extending member) 42 Floor Panel 44 Ceiling Panel 46 Gypsum board 48 Bis 50 Cable Laying Space Ca,C communication cable F Staircase H Residential (building) I Outlet K Closet T Communication equipment (information and communication equipment)

Claims

1. A building having two or more floors, a staircase connecting the first floor and a second floor located above the first floor; a storage space provided between two adjacent steps in the vertical direction of the staircase for storing information and communication devices; A building having a cable installation space communicating with the storage space and in which communication cables connected to the equipment are installed.

2. 2. The building according to claim 1, wherein the upper step of the two steps is the highest step of the steps on the staircase and is located lower than the floor of the second floor.

3. The staircase includes a surrounding wall that surrounds the storage space between the two treads in the vertical direction, The building of claim 2 , wherein the upper tread is removably mounted on an upper surface of the enclosure wall.

4. The surrounding wall has a first wall provided at an end of the storage space closer to the staircase entrance and extending in the left-right direction of the staircase, The building of claim 3 , wherein the first wall is provided with a slit.

5. A long body extending in the left-right direction is attached to the bottom surface of the upper step, The building according to claim 4 , wherein when the upper tread is placed on the upper surface of the surrounding wall, the elongated body is adjacent to an inner wall surface of the first wall.

6. The surrounding wall has two second walls extending from both ends of the first wall in the left-right direction toward the descending side of the staircase, The staircase has a partition plate provided at an end of the storage space closer to the exit side, The building according to claim 5 , wherein the partition plate is connected to an end of each of the two second walls opposite the first wall.

7. The staircase is located above the partition plate and has a rising plate arranged vertically with the partition plate across a gap, The building described in claim 6, wherein when the upper tread is placed on the upper surface of the surrounding wall, the end of the upper tread closer to the exit is inserted into the gap.

8. an extension member disposed between the ceiling of the first floor and the floor of the second floor and extending horizontally; The partition plate is disposed adjacent to the extension member in the horizontal direction, The building according to claim 6 , wherein a portion of the cable installation space is present in a space between the extension member and a ceiling of the first floor in the vertical direction.

9. The partition plate has a through hole formed therein, The building of claim 8, wherein the through hole is continuous with a space between the extension member and the ceiling of the first floor.

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