building

Abstract

The first area features a spacious, reflective light environment that emphasizes a sense of openness, while the second area provides a reflective light environment that ensures practical illumination that wraps around the user's hands. Both are achieved through a simple configuration, ultimately improving the livability of a building that incorporates both the first and second areas into a single room. [Solution] A building 1 comprising a first area 7 and a second area 8 located on one side of a main beam 6 within the same room 2, wherein a long overhanging plate portion 30 is provided at the lower end of the side of the first area 7 and the lower end of the side of the second area 8 of the main beam 6, extending laterally and along the longitudinal direction of the main beam 6, and furthermore, lighting fixtures 31 are installed on the upper surfaces of both overhanging plate portions 30, and the height position of the ceiling 14 in the first area 7 is located above the height position of the ceiling 24 in the second area 8.

Description

Technical Field

[0001] The present invention relates to a building.

Background Art

[0002] Patent Document 1 discloses a technique in which a horizontal ceiling portion is provided above the lower end portion of a large beam so that the large beam is exposed indoors, and lighting fixtures are installed along the large beam on the upper surface of a support member attached to the side surface of the exposed large beam. By using the side surface of the exposed large beam as an irradiation surface for indirect lighting, it is possible to improve the luminance within the visual field of a person, and thereby, while suppressing the illuminance on the desktop surface, it is possible to achieve energy saving while enhancing the brightness feeling of the space.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, although the conventional indirect lighting contributes to improving the uniform brightness feeling of the entire room, there is a problem that it is difficult to intentionally give a differentiated lighting effect to both areas on both sides of the large beam with different uses within the same room. That is, in the conventional technology, both sides of the large beam generally have the same lighting effect, and it is insufficient to simultaneously satisfy an area where a sense of staying and openness is emphasized like a living room and an area where workability while looking at one's hands is emphasized like a dining kitchen or the like.

[0005] The present invention has been made in view of the above circumstances, and its object is to make compatible, with a simple configuration, a reflected light environment with a spreading that emphasizes a sense of openness in the first area and a reflected light environment that secures a practical illuminance that wraps around the hands in the second area, and as a result, to improve the living comfort of a building equipped with both the first area and the second area in one room. [Means for solving the problem]

[0006] A means to solve the above problems is a building that has, within the same room, a first area provided on one side separated by a main beam, and a second area provided on the other side, The lower end of the first area side surface and the lower end of the second area side surface of the main beam are provided with elongated overhanging plates that extend laterally and along the longitudinal direction of the main beam, and lighting fixtures are installed on the upper surfaces of both of these overhanging plates. The ceiling height in the first area is characterized by being located higher than the ceiling height in the second area. [Effects of the Invention]

[0007] According to the present invention, the first area provides a spacious reflected light environment that emphasizes a sense of openness, while the second area provides a reflected light environment that ensures practical illumination that wraps around the user's hands. These two environments are achieved simultaneously with a simple configuration, and as a result, the livability of a building that incorporates both the first and second areas into a single room can be improved. [Brief explanation of the drawing]

[0008] [Figure 1] This is a floor plan showing the habitable rooms within a building. [Figure 2] This is a perspective view primarily showing the first area of ​​the living space. [Figure 3] This is a perspective view showing the entire living space, from the first area towards the second area. [Figure 4] This is a cross-sectional view showing the configuration of the first workspace and storage space. [Figure 5] This is a perspective view primarily showing the third workspace within the living area. [Figure 6] This is a cross-sectional view showing the configuration of the main beam and indirect lighting. [Modes for carrying out the invention]

[0009] <Summary of Disclosure> This specification discloses the following building 1. The reference numerals listed in the summary of this disclosure are referenced in Figures 1 to 6. These reference numerals are included to facilitate understanding of building 1, and the scope of the invention is not limited to the examples shown in the drawings.

[0010] (1) First aspect A building 1 according to one aspect of this disclosure, as shown in Figures 1 to 6, for example, comprises a first area 7 located on one side of a main beam 6 and a second area 8 located on the other side within the same room 2. On the main beam 6, the lower end of the side surface of the first area 7 and the lower end of the side surface of the second area 8 are provided with elongated overhanging plate portions 30 that extend laterally and along the longitudinal direction of the main beam 6, and furthermore, lighting fixtures 31 are installed on the upper surfaces of both of the overhanging plate portions 30. The height of the ceiling 14 in the first area 7 is characterized in that it is located above the height of the ceiling 24 in the second area 8.

[0011] According to the first embodiment, since the first area 7 and the second area 8, which have different ceiling heights separated by the main beam 6, are provided within the same room 2, the optical path lengths to the ceilings 14 and 24 in the first area 7 and the second area 8 will naturally be different, resulting in the effect that the light radiated upward from the lighting fixture 31 spreads out differently on each ceiling surface. That is, in the first area 7, where the ceiling 14 is high, reflected light is easily dispersed over a wide area, resulting in an open and bright feeling, while in the second area 8, where the ceiling 24 is low, reflected light is easily directed towards the work area via a short optical path, resulting in the effect of ensuring illumination suitable for work. In addition, the upward light from the lighting fixture 31 on the overhanging plate 30 is reflected and diffused on the ceiling surface, resulting in a visual effect that makes the presence of the main beam 6 seem lighter. In short, since overhanging plate sections 30 are provided on both sides of the main beam 6, and lighting fixtures 31 are installed on their upper surfaces, and the ceiling 14 of the first area 7 is positioned higher than the ceiling 24 of the second area 8, a state is created within the same room 2 where lighting effects are intentionally differentiated according to their purpose, and as a result, the living comfort of a building that has the first area 7 and the second area 8 in one room can be improved.

[0012] (2) Second aspect In one aspect of the present disclosure, as shown in Figure 6, for example, in the first embodiment, the height positions of both of the overhanging plate portions 30 from the floor of the room 2 are set to be the same, and the height positions of both of the lighting fixtures 31 from the upper surface of the overhanging plate portion 30 are set to be the same.

[0013] According to the second embodiment, the height positions of both overhanging plate sections 30 from the floor of the room 2 are set to be the same, and the height positions of both lighting fixtures 31 from the upper surface of the overhanging plate section 30 are set to be the same. As a result, the initial light distribution conditions radiated from the lighting fixtures 31 toward the ceiling surface are ensured to be uniform on both sides. Consequently, differences in brightness caused by the mounting conditions of the lighting fixtures 31 are less likely to occur on the left and right sides of the main beam 6, the way light rises from the overhanging plate section 30 toward the ceiling surface becomes stable, and a highly homogeneous indirect lighting environment in line with the intended lighting plan can be obtained.

[0014] (3) The third aspect As shown in, for example, FIG. 6, in the first aspect, the building 1 according to one aspect of the present disclosure is characterized in that the height position of the lower surface of the both overhanging plate portions 30 from the floor of the room 2 is slightly higher than the height position of the lower surface of the large beam 6 from the floor of the room 2.

[0015] According to the third aspect, the line of sight tends to gather on the lower surface of the large beam 6 exposed in the room 2. If the lower surface of the overhanging plate portion 30 is aligned with the lower surface of the large beam 6, it is likely to be perceived as a continuous low ceiling line in the upward viewing direction. In contrast, in this aspect, the height position of the lower surface of the both overhanging plate portions 30 from the floor of the room 2 is slightly higher than the height position of the lower surface of the large beam 6 from the floor of the room 2. Therefore, it is difficult to form a continuous surface when looking up, and the sense of oppression by the large beam 6 can be suppressed.

[0016] (4) The fourth aspect As shown in, for example, FIGS. 1, 2, and 6, in the first aspect, the room 2 has at least one orthogonal extending body (small beam 6a, duct 6b) extending in a direction orthogonal to the large beam 6 in plan view. The first ceiling member 14a constituting the ceiling 14 of the first area 7 is located above the lower surface of the orthogonal extending body. The second ceiling member 24a constituting the ceiling 24 of the second area 8 is located below the lower surface of the orthogonal extending body.

[0017] According to the fourth aspect, the first ceiling member 14a is positioned above the lower surface of the orthogonally extending members (the crossbeams 6a and the ducts 6b), and the second ceiling member 24a is positioned below the lower surface of the orthogonally extending members. Therefore, in the same room 2, the appearance (hiding method) of the orthogonally extending members can be intentionally switched between the areas 7 and 8. That is, in the first area 7, the orthogonally extending members are configured to be exposed upward, and the light projected upward from the lighting fixture 31 on the overhanging plate portion 30 to the ceiling 14 gently projects the shadow of the orthogonally extending members onto the ceiling surface, imparting a sense of depth and a design-like three-dimensionality to the ceiling surface. On the other hand, in the second area 8, since the second ceiling member 24a is configured to conceal the orthogonally extending members above, the visibility of equipment and the like can be suppressed, and a homogeneous diffused light environment that emphasizes workability can be ensured. As a result, in the first area 7, an expressive and open ceiling expression that enhances the sense of staying is coexistent with a functional ceiling expression that suppresses visual noise in the second area 8 within the same room 2, and the effect of visually clarifying the difference in the use of the areas through the lighting design is achieved. Further, since the overhanging plate portion 30 extends longitudinally along the large beam 6, the overhanging plate portion 30 is recognized as a horizontal line that appears to gently float due to the upward light from the lighting fixture 31. This horizontal line has the effect of naturally guiding the line of sight in the longitudinal direction of the large beam 6, creating a visual effect that makes the room 2 feel deeper and wider than the actual floor area.

[0018] (5) Fifth aspect The building 1 according to one aspect of the present disclosure, as shown in FIGS. 1 to 3 and FIG. 6 for example, in the first aspect, the first area 7 includes a living room, and the second area 8 includes a dining room and / or a kitchen.

[0019] According to the fifth embodiment, the first area 7 includes a living room, and the second area 8 includes a dining room and / or a kitchen room, so that a lighting environment appropriate to the use of each area can be appropriately established. Specifically, in the first area 7, which includes the living room, reflected light is easily dispersed over a wide area, providing an open and bright feeling, while in the second area 8, which includes a dining room and / or a kitchen room, an illuminance distribution is formed in which reflected light easily wraps around to the work area with a short optical path, ensuring a practical illuminance suitable for work while looking at one's hands. As a result, in both the living room and the dining room and / or kitchen room, which coexist in the same room 2, a lighting environment appropriate to the use can be realized simultaneously with a simple indirect lighting configuration, making it possible to comprehensively improve the livability and comfort of building 1.

[0020] Furthermore, in recent years, there has been a growing demand for the realization of a decarbonized society through the promotion of carbon neutrality, which aims to reduce carbon dioxide emissions to virtually zero, and for the achievement of the Sustainable Development Goals (SDGs). In the construction industry, efforts are also being made to use wood, which reduces carbon dioxide emissions, for buildings. In one aspect of this disclosure, building 1 has a configuration in which the first area 7 and the second area 8 share ceiling-reflecting indirect lighting by lighting fixtures 31 within the same room 2, while the spread of reflected light and its reflection towards the work area are intentionally differentiated based on the difference in ceiling height. Therefore, the two areas 7 and 8, which have different uses, can be easily operated as a single unit. Consequently, by not dividing room 2 into two separate rooms, the first area 7 side and the second area 8 side, but sharing it as one room, duplication of lighting fixtures and control equipment can be suppressed, the number of installations and power consumption during operation can be reduced, contributing to improved energy efficiency and optimized resource use during operation, and contributing to the achievement of the SDGs (Goals 7, 11, 12, 13).

[0021] <Embodiment> Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments described below are subject to various technically preferred limitations for carrying out the present invention, but the technical scope of the present invention is not limited to the embodiments and illustrated examples below. Note that the directions and orientations in the embodiments and illustrated examples below are set solely for the convenience of explanation.

[0022] Figure 1 is a floor plan showing a part of a residence in a multi-unit or detached house constructed of wood, reinforced concrete, steel frame, steel-reinforced concrete, or a hybrid structure. Building 1 in this embodiment is a multi-unit or detached house, but is not limited to these, and may also be an office, lodging facility, educational facility, etc.

[0023] A mixed structure refers to a house in which part of the structure is made of reinforced concrete, steel frame, or steel-reinforced concrete, and the remaining part is made of wood. When a house is entirely or partially made of wood, the energy used from the production to disposal of the wood is less than the energy used from the production to disposal of metal or concrete materials. Therefore, houses contribute to the realization of a decarbonized society by promoting carbon neutrality, which means achieving virtually zero carbon dioxide emissions, and to the achievement of the Sustainable Development Goals (SDGs).

[0024] In both the case of apartment buildings and detached houses, if the area shown in Figure 1 is part of the dwelling, the dwelling consists of the area shown in Figure 1 and an area on the floor above or below the area shown in Figure 1, and these areas are connected by stairs to constitute the dwelling. In the case of a detached house, if the area shown in Figure 1 is part of the dwelling, the detached house may be a multi-story building. In the case of a detached house, if the area shown in Figure 1 is the entire dwelling, the detached house may be a single-story building. In the case of apartment buildings, if the area shown in Figure 1 is the entire dwelling, there may be another dwelling on the floor above or below the area shown in Figure 1.

[0025] Figure 1 shows symbols indicating directions. The directions in the following explanation are examples only, and the directions may be changed. For example, the diagram shown in Figure 1 may be inverted east-west. For example, the diagram shown in Figure 1 may be inverted north-south. For example, the diagram shown in Figure 1 may be rotated by a predetermined angle around the vertical axis.

[0026] Next, the floor plan of building 1 in this embodiment will be described. The area shown in Figure 1 is mainly occupied by living rooms 2, and Figure 1 shows an external area 3 adjacent to the southwest portion of living rooms 2. In addition, a bathroom area 4 and other areas 5 are located adjacent to the northern portion of living rooms 2.

[0027] The exterior area 3 may be a terrace or a balcony. In this embodiment, the exterior area 3 is a terrace, and the outdoor end of the terrace is formed in a stepped manner. If it is a balcony, a handrail is provided at the outdoor end of the balcony.

[0028] The bathroom area 4 is located on the northeast side of living room 2 and is adjacent to the pantry 21, which will be described later. Although not shown in the illustration, it includes a washbasin, laundry space, dressing area, bathroom, and a family-shared closet. The family-shared closet can be accessed from other areas 5.

[0029] Other area 5, although not shown in the figures, includes a corridor and a number of living rooms and non-living rooms connected to the corridor. The living rooms in other area 5 include the master bedroom and children's rooms, and the non-living rooms in other area 5 include, for example, an entrance hall and a storage room. However, the types of living rooms and non-living rooms are not particularly limited and can be changed as appropriate without departing from the spirit of the present invention.

[0030] Living room 2 is a room that combines the functions of a living room, dining room, and kitchen room into one space, and is intended to be the place where the residents of the building 1 of this embodiment spend their days. In this embodiment, living room 2 is divided into a first area 7 on the west side and a second area 8 on the east side by a large beam 6 that extends in the north-south direction.

[0031] The main beam 6 is a structural element that makes up the frame of building 1 and contributes to maximizing the area of ​​the living spaces 2. Multiple secondary beams 6a extend in the east-west direction from the east and west sides of the main beam 6, which extends in the north-south direction, and together with the main beam 6, contribute to maximizing the area of ​​the living spaces 2. In addition, multiple ducts 6b are installed along with these multiple secondary beams 6a, extending in the east-west direction. These multiple ducts 6b are, for example, ducts for the whole-house air conditioning system.

[0032] The first area 7 is primarily used as a living room and is located in the center in the north-south direction. It includes the first central space 10, which functions as the main part of the living room, and the first workspace 11 and storage space 12, located north of the first central space 10. The above-mentioned external area 3 is located south of the first central space 10.

[0033] The first central space 10, which is the main part of the living room, is located to the west of the second central space 20 (described later) with respect to the main beam 6, and is formed so that it is longer in the north-south direction than in the east-west direction in a plan view. A wall W1 with an entrance is provided between the first central space 10 and the exterior area 3. The entrance formed in wall W1 is equipped with sliding window fittings on both sides. In this embodiment, wall W1 is a glass wall made of tempered glass, but it is not limited to this.

[0034] Although there is no clear boundary wall between the first central space 10, which is the main part of the living room, and the first workspace 11 and storage space 12, there is a concave space in plan view to the west of the corridor 7a in the first area 7, which is spatially integrated with the corridor in other areas 5, and the first workspace 11 and storage space 12 are located in this concave space.

[0035] As shown in Figures 1 to 3, the first central space 10 is an area where residents sit and spend time, furnished with a sofa 10a and a sofa table 10b. In particular, the first central space 10, which is considered the main part of the first area 7 that is mainly used as a living room, is an area where residents sit and relax, converse, watch television, browse the internet, or engage in hobbies and other activities. The sofa 10a may be an L-shaped sofa, or it may be other seating furniture such as a bench or chair.

[0036] As shown in Figures 1, 2, and 4, the first workspace 11 and the storage space 12 are arranged such that the first workspace 11 is positioned above the storage space 12, and the first workspace 11 and the storage space 12 are separated by the floor of the first workspace 11 and the ceiling of the storage space 12.

[0037] The floor level of the first workspace 11 (second floor) is set approximately half a floor higher than the floor level of the first area 7 and the storage space 12 (first floor), and the ceiling height of the storage space 12 is set to 800mm to 1400mm. In addition, a staircase 11a is installed between the floor of the first workspace 11 and the floor of the first area 7, along the partition wall W3 between it and the corridor 7a. This first workspace 11 is spatially integrated with the first central space 10.

[0038] The storage space 12 is accessible through an entrance formed between multiple wall panels that function as legs 11b supporting the floor (second floor) of the first workspace 11. Some of these wall panels are integrated with the stairs 11a and each functions as a leg 11b. This storage space 12 is spatially integrated with the first central space 10 through the entrance.

[0039] The first workspace 11 and storage space 12 face a wall W4 located on their north side, and are positioned close to the wall W4. A workbench 11c is provided at the edge of the floor of the first workspace 11 on the side facing the first central space 10. Residents can sit on chairs 11d and perform tasks such as work (office work) or studying.

[0040] The first workspace 11 and storage space 12 configured as described above may be configured as a single piece of freestanding furniture, or they may be provided integrally with the structure of the building 1 (for example, each wall W3, W4).

[0041] On the west side of the first area 7, the exterior wall W2 of the building 1 structure extends in a north-south direction. Furthermore, as shown in Figures 1 and 2, a built-in decorative shelf 13 is provided along the aforementioned exterior wall W2 on the west side of the first area 7. The vertical dimension of the decorative shelf 13 is set lower than the ceiling height of the first area 7. Therefore, a space is formed between the top surface of the decorative shelf 13 and the ceiling of the first area 7 due to the difference in height.

[0042] Furthermore, a gap 13a is formed between the display shelf 13 and the western exterior wall W2. The gap 13a is shielded from the first area 7 by a false wall 13b that reaches the ceiling of the first area 7, which is provided behind the display shelf 13. The western end of the joist 6a and the western end of the duct 6b, which have passed through the space formed between the top surface of the display shelf 13 and the ceiling of the first area 7, are housed in the gap 13a. In this embodiment, the multiple joists 6a are assumed to be resting on the top surface of the display shelf 13. In addition, various pipes and wiring may be housed in the gap 13a.

[0043] The first ceiling 14 of the first area 7 is located above the lower surfaces of the multiple joists 6a, as shown in Figures 2 and 6. The first ceiling 14 is formed by ceiling material 14a, which is made of, for example, gypsum board, wood, metal, or resin panel, and its surface is finished with, for example, cloth.

[0044] The second area 8 is located in the center in the north-south direction and includes a second central space 20 that functions as a dining room and kitchen room, a pantry 21 and a second workspace 22 located north of the second central space 20, and a third workspace 23 located south of the second central space 20.

[0045] The second central space 20 is located to the east of the first central space 10, separated by the main beam 6, and is formed so that it is longer in the north-south direction than in the east-west direction in a plan view. There is no partition wall between the first central space 10 and the second central space 20, and they are spatially integrated.

[0046] The second central space 20 is roughly divided into a kitchen area, which has an island-type sink 20a and a wall-mounted countertop 20b positioned along wall W5, and a dining area, which has a dining table 20c connected to the sink 20a. In other words, the kitchen area is roughly on the east side of the second central space 20, and the dining area is roughly on the west side.

[0047] The kitchen area is a workspace where residents stand while working. Specifically, it is a place where residents perform tasks such as cooking or washing dishes while standing. The sink unit 20a is located near the center of the second central space 20 and includes a work counter, sink, and faucet. The cooking area 20b is located along the wall W5 that runs north-south on the east side of the living room 2, and includes a work counter, a stove, and storage shelves. The space between the sink 20a and the countertop 20b serves as a workspace. When a resident stands in that space facing the sink 20a, they have a clear view of the kitchen area, the dining area, the first central space 10, the second workspace 22, and the third workspace 23.

[0048] The dining area is the area where residents sit and spend time. In particular, the dining area is the area where residents sit to eat or work. A dining table 20c is placed or installed in the dining area. The dining table 20c is adjacent to the sink 20a on the south and west sides and is integrated with the sink 20a. The dining table 20c is either custom-made or ready-made furniture. Furthermore, the dining table 20c is a round table, making it easier for residents seated in dining chairs 20d to face each other.

[0049] The dining table 20c is integrated with the sink 20a, which is one of the kitchen counters in this embodiment, and is designed to be used by all residents while seated. This makes it possible to study in a group or work while keeping an eye on family members. In other words, the dining table 20c also functions as a work desk / workbench. The dining table 20c in this embodiment is described as a round table, but it is not limited to this. That is, the dining table 20c can be positioned in a location suitable for keeping an eye on (or being kept on by) residents who are cooking or washing dishes in the work area between the sink 20a and the cooking counter 20b, and its planar shape can be circular, rectangular, or polygonal.

[0050] Here, a suitable position for working while keeping an eye on a resident working in the work area between the sink 20a and the cooking counter 20b refers to a state in which the dining table 20c does not encroach on the work area, and the dining table 20c is positioned towards one end of the kitchen counter (sink 20a) in the longitudinal direction and is integrated with it. In particular, the dining table 20c is positioned towards the end (one end) of the kitchen counter (sink 20a) that is on the third work space 23 side.

[0051] The pantry 21 is located in the second central space 20, specifically on the north side of the kitchen area, and is situated between the kitchen area and the water area 4. As a result, the pantry 21 functions as an intermediate area in the water traffic flow. Adjacent to the pantry 21, in the corridor 21a connecting the kitchen area and the water area 4, there is a utility sink 21b that can be used for an auxiliary faucet in the kitchen area, an auxiliary faucet in the water area 4, or for washing off dirt from food stored in the pantry 21.

[0052] The second workspace 22 is located west of the pantry 21 and east of the corridor 7a, directly beneath the main beam 6. The second workspace 22 is enclosed by a partition wall W6 located on the side of the wet area 4, a partition wall W7 to the west and a partition wall W8 to the east that are perpendicular to the partition wall W6 in plan view, and a glass partition 22a.

[0053] As shown in Figure 2, the glass partition 22a is set to a height dimension from the floor (first floor) to the main beam 6. In addition, a wall W9 is provided between the upper end of the glass partition 22a and the second ceiling 24 on the second area 8 side to bridge the height difference with the second ceiling 24. In plan view, the glass partition 22a is provided in a section parallel to the partition wall W6 on the bathroom area 4 side and on the extension of the partition wall W8 on the east side, and together with the parallel section, it forms an L-shape in plan view. There is an entrance between the partition wall W7 on the west side and the glass partition 22a, and the partition wall W7 is provided with a fitting to open and close this entrance. In other words, the third workspace 23 is easily visible from various places in the living room 2 by the glass partition 22a, but the entrance is only open to the first area 7 side.

[0054] In the second workspace 22, workbenches 22b are arranged along partition walls W6, W7, and W8. Specifically, workbenches 22b, which are made of counter boards, are fixed to partition wall W6 located on the north side, and are also stretched and fixed between the east and west partition walls W7 and W8. Residents can sit on chairs 22c and perform tasks such as work (office work) or studying.

[0055] The third workspace 23 is located south of the second central workspace 20 and is adjacent to it via a partition wall W10. The third workspace 23 and the second central workspace 20 are spatially integrated. The third workspace 23 is enclosed by the partition wall W10, the southern outer wall W11 which is arranged parallel to the partition wall W10 in a plan view, the western outer wall W12 which is arranged perpendicular to the southern outer wall W11 in a plan view, and the structural column P1 to which the partition wall W10 and the western outer wall W12 are joined.

[0056] Structural column P1 is connected to main beam 6 and, together with main beam 6, supports the floor slab FS of the upper floor, forming the main structure of building 1. In addition to structural column P1, to which partition wall W10 and the western exterior wall W12 are connected, the main structure of building 1 also has several other structural columns, including structural column P2, which is spaced apart to the east of structural column P1. A fireplace facility FP (electric fireplace, or mantelpiece) is installed on the north side of structural column P1.

[0057] In the third workspace 23, a workbench 23a is positioned along the south exterior wall W11 and the west exterior wall W12. Specifically, the workbench 23a, which is made up of an L-shaped counter board in plan view, has multiple legs and is set up on the floor (first floor) of the third workspace 23. The edge of the workbench 23a that is on the outdoor side is positioned close to the south exterior wall W11 and the west exterior wall W12. Residents can sit on chairs 23b and perform tasks such as work (office work) or studying.

[0058] The south exterior wall W11 and the west exterior wall W12 are made of glass at least above the workbench 23a, allowing residents sitting on chair 23b and working towards the workbench 23a to work while viewing the outdoor scenery. Additionally, residents sitting on chair 23b and working towards the workbench 23a can work with their backs to the second central space 20.

[0059] Between the third workspace 23 and the second central space 20, a first built-in shelf 25 and a second built-in shelf 26 are installed at the location of the partition wall W10. These first and second built-in shelves 25 and 26 are perceived by the residents as part of the partition wall W10. The first and second built-in shelves 25 and 26 are spaced apart, and the space between them serves as an entrance 27 for residents to move between the third workspace 23 and the second central space 20. Therefore, the partition wall W10 may be formed in a roughly gate-like shape, including a pair of built-in shelves 25 and 26 spaced apart from each other in the east-west direction. The entrance 27 is not fitted with a door and is always left open. As a result, the second central space 20 and the third workspace 23 are always spatially integrated.

[0060] The first and second built-in shelves 25 and 26 are double-sided by having multiple storage compartments accessible from the second central space 20 and multiple storage compartments accessible from the third work space 23. The multiple storage compartments are formed by dividing the space between the top plates 25a, 26a and the bottom plates 25b, 26b vertically with multiple shelves 25c, 26c, and further dividing the space on the multiple shelves 25c, 26c and the bottom plates 25b, 26b horizontally with multiple vertical boards 25d, 26d. A back panel may be provided to separate the space between the top plates 25a, 26a and the bottom plates 25b, 26b from the second central space 20 side to the third work space 23 side.

[0061] The eastern side of the third workspace 23 is a storage space, and a locker 23c is provided on the eastern side of the workbench 23a. The locker 23c is a built-in piece of furniture, and the workbench 23a is positioned adjacent to the locker 23c.

[0062] [Regarding the integrated work zone in the second area] Next, with reference to Figures 1, 3, and 5, the integrated and open work zone within the second area 8 of the living room 2 will be described. This work zone comprises a first zone around a workbench 23a installed in the third workspace 23, a second zone around a dining table 20c installed in the second central space 20, and a partition wall W10 provided between the first and second zones. In the following description, "zone" may be replaced with other words. For example, these include area, indoor area, space, corner, block, etc.

[0063] The partition wall W10 has an entrance 27 without a door or window. This creates a spatially integrated state between the first and second zones, making it easy to move between them, as well as allowing for easy passage of sight and sound. In particular, the first and second zones are located opposite each other at close range via the entrance 27, making movement extremely easy. By proceeding from the first zone to the adjacent entrance 27 and passing through it, one immediately reaches the second zone, so the first and second zones are contained within a range of only a few meters within the living space 2.

[0064] In the first zone, a first work desk is installed along one of the walls W1 to W12 surrounding the living room 2, excluding the partition wall W10. This first work desk refers to the workbench 23a in the third workspace 23 described above. The workbench 23a is formed in an L-shape in plan view as described above, and is positioned close to the south exterior wall W11 and the west exterior wall W12.

[0065] Windows are provided in the south-facing exterior wall W11 and the west-facing exterior wall W12. In particular, the area above the first work desk (workbench 23a) is made of glass, so that residents (or non-residents) can concentrate or relax while working or studying in the first zone while enjoying the view of the outdoors.

[0066] In the second zone, a second work desk is installed around the living room 2, and is positioned at a distance from the multiple walls W1 to W12 surrounding the living room 2, including the partition wall W10. This second work desk refers to the dining table 20c in the second central space 20 described above. As described above, the dining table 20c is positioned adjacent to and integrated with the sink 20a, which is a kitchen counter.

[0067] Furthermore, the dining table 20c, which serves as the second work desk, is suitable for group study or work by multiple people because, by its nature, it can accommodate multiple people sitting together. Also, since the dining table 20c is easily visible to residents working in the kitchen area and residents relaxing in the first central space 10 (living room) (and vice versa), it is suitable for working while keeping an eye on family members. In particular, because the dining table 20c in this embodiment is a round table, it can be said to be effective for group study.

[0068] Individuals who are residents (or non-residents) can use the work zone in the second area 8 in a style such as, for example, working in the first zone, then passing through entrance 27 to move to the second zone, and continuing their work while watching children playing in the first central space 10. Furthermore, multiple residents (or non-residents) can also use the work zone in the second area 8 in a style such as conducting group study in the second zone, then passing through entrance 27 to move to the first zone, where each person can continue their focused study. Furthermore, the usage style of the work zone is not particularly limited and can be modified as appropriate without departing from the spirit of the present invention.

[0069] Furthermore, since the entrance 27 is equipped with a first built-in shelf 25 and a second built-in shelf 26 that can be used on both sides, residents can store documents and reference books in the first built-in shelf 25 and the second built-in shelf 26 when moving between the first and second zones, so that these documents and reference books can be used in both the first and second zones. In other words, since the same documents and reference books can be used in both the first and second zones, there is no need to carry documents and reference books over long distances or prepare separate copies for each zone, making it highly convenient.

[0070] Based on the above, the configuration of the work zone in this embodiment allows for both an environment where individuals can concentrate or relax while working, and an environment where they can engage in group learning or work while supervising their family. Furthermore, it enables easy transitions between these two different environments, allowing for quick and easy switching of work styles, and ultimately improving work progress.

[0071] [Regarding indirect lighting installed in living spaces] Next, with reference to Figures 1 to 3, Figure 6, etc., the indirect lighting provided on the first area 7 side and the second area 8 side of the living room 2 will be described. The indirect lighting in this embodiment is ceiling indirect lighting that irradiates light toward the ceiling 14, 24. Specifically, the indirect lighting in this embodiment is a ceiling reflective type configuration in which projection plates 30 are provided along the longitudinal direction on both sides of the main beam 6 that divides the living room 2 into east and west sections, and lighting fixtures 31 are provided on the upper surface of the projection plates 30. This causes the light to radiate upward toward the ceiling surface, and by reflecting and diffusing the light on the ceiling surface while suppressing glare, there is a visual effect that makes the presence of the main beam 6 less prominent and allows the entire space to be illuminated uniformly.

[0072] More specifically, the living space 2 is conceptually divided into a first area 7 and a second area 8 based on the main beam 6, with indirect lighting provided on both sides of the main beam 6. The overhanging plate section 30 is formed as a long member along the length of the main beam 6 and is configured to protrude from both the east and west sides of the main beam 6 under the same conditions. In other words, both overhanging plate sections 30 protrude from the sides of the main beam 6 by the same length and are set to the same thickness.

[0073] The lower surfaces of both overhanging plate sections 30 are set to a height slightly above the lower surface of the main beam 6, and lighting fixtures 31 are installed on the upper surface of both the east and west overhanging plate sections 30 under the same conditions. In other words, the height position from the floor (first floor) is the same for both overhanging plate sections 30, and the height position from the floor (first floor) of the lower surfaces of these overhanging plate sections 30 is slightly above the height position from the floor of the lower surface of the main beam 6.

[0074] Furthermore, the height of the first ceiling 14 in the first area 7 is higher than the height of the second ceiling 24 in the second area 8, and the distance from the lighting fixtures 31 installed at the same height to each ceiling surface differs between areas.

[0075] A lighting fixture 31 is provided on the upper surface of the overhanging plate portion 30. More specifically, a long installation groove 30a is formed on the upper surface of the overhanging plate portion 30 along the longitudinal direction of the overhanging plate portion 30, and the lighting fixture 31 is installed in this installation groove 30a. When the lighting fixture 31 is installed in the installation groove 30a, its upper end may be set to protrude from the upper surface of the overhanging plate portion 30, or it may be set to not protrude from the upper surface of the overhanging plate portion 30. When the upper end of the lighting fixture 31 is set to protrude from the upper surface of the overhanging plate portion 30, the shielding of the light beam by the overhanging plate portion 30 is suppressed, and the rise of light radiated upward toward the ceiling surface is improved. As a result, the reflected light from the ceiling 14,24 is diffused over a wider area and more smoothly, increasing the overall sense of brightness in the space, and the shadows cast on the main beam 6 by the reflected light from the ceiling are reduced, resulting in a visual effect that makes the main beam 6 appear lighter in presence. On the other hand, if the dimensions are set so that the upper end of the lighting fixture 31 does not protrude from the upper surface of the overhanging plate portion 30, the edge of the overhanging plate portion 30 will moderately cover the light source, making it difficult for the lighting fixture 31 to be directly visible within the living room 2, thereby suppressing the occurrence of glare. As a result, a calm, diffused light is obtained, especially in areas where close work is required, such as the second area 8, ensuring an environment suitable for work. In addition, because the lighting fixture 31 is less visible, the horizontal line of the overhanging plate portion 30 is emphasized, giving a clean and neat impression in terms of design. In this embodiment, the upper end of the lighting fixture 31 protrudes slightly from the upper surface of the overhanging plate portion 30.

[0076] In this embodiment, the lighting fixture 31 is, for example, an LED (Light Emitting Diode) lighting fixture, and the height position from the top surface of the protruding plate portion 30 is set to be the same for both lighting fixtures 31. This suppresses differences in light distribution balance and reduces unevenness in brightness between areas. The lighting fixture 31 is configured to distribute light upward toward the ceiling surface, but "upward" here does not mean just directly upward, but rather refers to a state in which the main light distribution axis is directed toward the upper hemisphere toward the ceiling surface (a light distribution state in which light is radiated into the upper half of the space toward the ceiling surface). The lighting fixture 31 may also be equipped with a dimming function that allows the illuminance to be adjusted within the living room 2.

[0077] In this embodiment, the ceiling height of the first area 7 is set higher than the ceiling height of the second area 8. That is, the height position of the first ceiling 14 in the first area 7 is higher than the height position of the second ceiling 24 in the second area 8. Therefore, the distance that light from lighting fixtures 31 installed at the same height travels to each ceiling 14 and 24 differs between the first area 7 and the second area 8.

[0078] In the first area 7, the distance from the upper surface of the overhanging panel 30 to the first ceiling 14 is set to be long, resulting in the light reflected by the first ceiling 14 being widely dispersed throughout the room, especially in the first central space 10. As a result, even though it is the same indirect lighting, the first area 7 can be visually made to feel more spacious than the second area 8. In other words, shadows with depth are created on the ceiling surface of the first ceiling 14, giving it an aesthetically pleasing three-dimensional feel.

[0079] In the second area 8, the distance from the top surface of the overhanging panel 30 to the second ceiling 24 is set to be short, resulting in an illumination distribution that allows light reflected from the second ceiling 24 to easily reach the work area of ​​people working at the kitchen counter (sink 20a, work counter 20b) and dining table 20c. As a result, the ability to work while seeing one's hands, which is necessary for use in the dining kitchen and work zone, is ensured, and a space suitable for work is realized. In other words, in the second area 8, a uniform diffused light environment that prioritizes workability is ensured.

[0080] Furthermore, the illuminance can be adjusted on the second area 8 side using the dimming function of the lighting fixture 31 on the protruding panel 30 in the second area 8. In other words, users working at the dining table 20c can appropriately change the brightness of their workspace according to the task at hand, further improving work efficiency. On the other hand, the first area 7 side is not affected by the dimming, so it is possible to flexibly create a lighting environment that suits the purpose while maintaining a calm atmosphere as a living room. Furthermore, the illuminance can be adjusted on the first area 7 side by using the dimming function of the lighting fixture 31 on the protruding panel 30 in the first area 7. This allows for flexible adjustment of the illuminance in the first area 7 according to the purpose of stay, and optimizes the lighting environment, including the impression of shadows cast on the ceiling surface, to suit the resident's preferences. In addition, by using this in conjunction with the dimming on the second area 8 side, it becomes possible to independently adjust the atmosphere of both areas while harmonizing spatial design and the visual environment according to their purpose.

[0081] Furthermore, as described above, multiple small beams 6a and multiple ducts 6b are provided extending from the side of the main beam 6 on the first ceiling 14 of the first area 7. The overhanging plate section 30 and the lighting fixture 31 are located below the multiple small beams 6a and multiple ducts 6b, and the lighting fixture 31 shines light toward the first ceiling 14, so the shadows of the multiple small beams 6a and multiple ducts 6b are projected onto the first ceiling 14. In other words, the shadows of the multiple small beams 6a and multiple ducts 6b are gently projected onto the first ceiling 14 by the upward light from the lighting fixture 31 provided on the overhanging plate section 30. This creates shadows with depth on the ceiling surface, resulting in a design effect that evokes a skeleton ceiling. In the second area 8, the secondary beams 6a and ducts 6b are concealed from above by the second ceiling 24, resulting in a ceiling design and function distinct from that of the first area 7 coexisting within the same room. This reduces the visibility of equipment and ensures a uniform, diffused light environment that prioritizes work efficiency, while the contrast with the shading in the first area 7 visually clarifies the spatial zoning.

[0082] With the above configuration, the first area 7 is designed to create a comfortable atmosphere that enhances the lingering experience as a living room, while the second area 8 ensures the practical illumination required for a dining kitchen and work zone. This allows for a lighting environment that balances aesthetic appeal and functionality within the same room. The overhang length of the overhanging panel 30, as well as the arrangement and output of the lighting fixtures 31, can be adjusted according to the ceiling height and furniture layout, allowing for flexible optimization of lighting performance for each area when changing uses. [Explanation of Symbols]

[0083] 1. Building 2 living room 6 girder 6a Small beam 6b Duct 7. First Area 8. Second Area 10 First Central Space 10a Sofa 11. First workspace 11c workbench 12 storage spaces 13 Display shelves 14 First ceiling 14a Ceiling material 20 Second Central Space 20a sink 20b cooking table 20cm Dining Table 21 Pantry 22 Second workspace 22b workbench 23 Third workspace 23a workbench 24 Second ceiling 24a Ceiling material 25 First shelf 26. Second built-in shelf 27 Entrance / Exit 30 Overhang plate part 31 Lighting fixtures P1 structural column W10 Partition Wall W11 Exterior Wall W12 Exterior Wall

Claims

1. A building having, within the same room, a first area located on one side separated by a main beam, and a second area located on the other side, The lower end of the first area side surface and the lower end of the second area side surface of the main beam are provided with elongated overhanging plates that extend laterally and along the longitudinal direction of the main beam, and lighting fixtures are installed on the upper surfaces of both of these overhanging plates. A building characterized in that the ceiling height in the first area is located higher than the ceiling height in the second area.

2. The building according to claim 1, characterized in that the height positions of both of the overhanging plate sections from the floor of the room are set to be the same, and the height positions of both of the lighting fixtures from the upper surface of the overhanging plate section are set to be the same.

3. The building according to claim 1, characterized in that the height position of the lower surface of both of the overhanging plate portions from the floor of the room is located slightly above the height position of the lower surface of the main beam from the floor of the room.

4. The chamber has at least one orthogonal extending body that extends in a direction perpendicular to the main beam in a plan view, The first ceiling material constituting the ceiling of the first area is located above the lower surface of the orthogonal extension, The building according to claim 1, characterized in that the second ceiling material constituting the ceiling of the second area is located below the lower surface of the orthogonal extension body.

5. The building according to claim 1, characterized in that the first area includes a living room, and the second area includes a dining room and / or a kitchen room.

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