JP2024022119A - Ceiling structure of building - Google Patents

Abstract

To provide a ceiling structure of a building capable of improving an appearance of a ceiling portion.SOLUTION: In a building 10, a window portion 32 is provided in an outer wall 30. The building 10 has, as a ceiling structure, a low ceiling portion and a high ceiling portion that is provided along the window portion 32 and is higher than the low ceiling portion. The low ceiling portion is constituted of a first ceiling panel material 35, and the high ceiling portion is constituted of a second ceiling panel material 37 above the first ceiling panel material 35. A fold-up space 39 as a high ceiling space is formed above the low ceiling portion by the high ceiling portion. A curtain rail 40 and a lighting apparatus 46 are arranged in the fold-up space 39. A curtain 41 is suspended and supported by the curtain rail 40.SELECTED DRAWING: Figure 3

Description

The present invention relates to a ceiling structure for a building.

Conventionally, a ceiling structure in which a curtain rail is arranged on the ceiling of a building having a window is known. For example, Patent Document 1 describes a configuration in which a curtain box is arranged in an upper part of a living space adjacent to a window.

JP 2019-197657 Publication

By the way, if the curtain box is visible from below the ceiling, there is a risk that the appearance of the ceiling will be impaired.

The present invention has been made in view of the above circumstances, and its main purpose is to provide a ceiling structure for a building that can improve the appearance of the ceiling.

In order to solve the above problems, a ceiling structure for a building according to a first aspect of the invention is a ceiling structure for a building having a window section, the ceiling structure including a low ceiling section, and a ceiling structure provided along the window section at a position higher than the low ceiling section. A curtain rail is arranged in a high ceiling space formed above the low ceiling part by the high ceiling part.

According to the present invention, the curtain rail is arranged in the high ceiling space formed by the high ceiling section above the low ceiling section. In other words, the high ceiling space is used as a curtain box. Therefore, the appearance of the ceiling can be simplified compared to a configuration in which the curtain box is arranged in the upper part of the living space adjacent to the window. As a result, the appearance around the ceiling can be improved.

In the ceiling structure of a building according to a second invention, in the first invention, the building has a ceiling beam and a ceiling beam provided in a state spanning between a pair of the ceiling beams, A first ceiling panel material, which is a ceiling panel material of the low ceiling section, is supported on the lower surface side of the beam, and a second ceiling panel material, which is a ceiling panel material of the high ceiling section, is supported on the upper surface side of the ceiling beam. A space is formed as the high ceiling space, which extends in the same direction as the ceiling beam and is below the second ceiling panel and above the first ceiling panel. It is characterized by

According to the present invention, the ceiling beam, which is a structure of the ceiling, is used, and the height is suitably increased by each ceiling panel material (first ceiling panel material, second ceiling panel material) provided on the lower surface side and the upper surface side. A ceiling space can be created. Further, the curtain rail can be arranged within a desired range along the window portion without causing interference with the ceiling beams.

The ceiling structure of a building according to a third aspect of the invention is characterized in that, in the first aspect, a first ceiling panel material is a ceiling panel material of the low ceiling section, and a second ceiling panel material is a ceiling panel material of the high ceiling section. a side wall section provided parallel to the window section between the windows and partitioning the high ceiling space, the first ceiling surface material overhanging the side wall section toward the high ceiling space side; A feature is that lighting equipment is placed above the section.

According to the present invention, the high ceiling space is not only a space for arranging curtain rails but also a space for arranging lighting equipment. In particular, since the first ceiling panel overhangs toward the high ceiling space than the side walls, and the lighting equipment is placed above the overhang, indirect lighting with the lighting equipment is possible, as well as curtains. It is possible to make indirect lighting stand out by lighting upwards.

The ceiling structure of a building according to a fourth aspect of the invention is characterized in that, in the third aspect, the opposite side of the high ceiling space is partitioned by the first ceiling surface material and the second ceiling surface material, with the side wall section in between. The lighting device is characterized in that a compartment is formed, and a power supply device for the lighting device is disposed in the compartment.

In the present invention, the first ceiling panel material that is the ceiling panel material of the low ceiling section and the second ceiling panel material that is the ceiling panel material of the high ceiling section are located on opposite sides of the high ceiling space with the side wall section in between. It is possible to form compartments divided in the vertical direction. In this case, by arranging the power supply device of the lighting device using the partitioned room, the lighting device and the power supply device can be suitably arranged even if the high ceiling space is a narrow space.

The ceiling structure of a building according to a fifth aspect of the present invention is characterized in that, in the first aspect, a first ceiling panel material is a ceiling panel material of the low ceiling section, and a second ceiling panel material is a ceiling panel material of the high ceiling section. a side wall section that is provided in parallel to the window section and partitions the high ceiling space; the first ceiling surface material and the second A compartment is formed by a ceiling surface material, and a curtain driving device for opening and closing the curtain suspended from the curtain rail is disposed in the compartment.

According to the present invention, the compartment is used as a space for arranging a curtain drive device for electrifying the opening and closing of the curtains. As a result, it is possible to improve convenience for residents while keeping the appearance of the ceiling portion simple.

Here, it is conceivable to form the indoor space as a large space and form a relatively large window in the outer wall section that partitions the indoor space into indoor and outdoor areas. In this case, it may be necessary to arrange a curtain rail corresponding to the window so as to cross the ceiling beam of the building.

Therefore, in the ceiling structure of a building according to a sixth invention, in the first invention, the high ceiling space is formed in a range that extends in a direction intersecting the ceiling beam and straddles the ceiling beam, and the high ceiling space The ceiling beam that intersects with the space is formed with a penetration part that passes through the ceiling beam in the width direction, and the curtain rail is arranged in the high ceiling space through the penetration part. do.

According to the present invention, the ceiling beam that intersects with the high ceiling space is provided with a penetrating portion that penetrates the ceiling beam in the width direction. The curtain rail is disposed in the high ceiling space by passing through the penetrating portion. Thereby, the curtain rail can be arranged to correspond to a relatively large window.

It is also conceivable to provide windows in two outer walls that intersect with each other, and to form a relatively large window across each outer wall.

Therefore, in the ceiling structure of a building according to a seventh aspect of the invention, in the first aspect, the window portion is provided in each of two outer wall portions that intersect with each other, and the high ceiling space is provided along each of the outer wall portions. The curtain rail is formed in a range including the protruding corner or the inner corner formed by each of the outer wall parts, and the curtain rail extends from the outer wall part through the outer corner part or the inner corner part. It is characterized by being arranged from one side to the other side.

According to the present invention, a high ceiling space is formed corresponding to each outer wall that intersects with each other. Thereby, the curtain rail can be arranged to correspond to a relatively large window.

FIG. 1 is a perspective view showing an outline of a unit-type building. A perspective view of a building unit. A vertical cross-sectional view showing the second floor of the building. A plan view of the second floor of the building. FIG. 7 is a plan view of a second floor portion of a building according to another embodiment. Cross-sectional view of the ceiling girder. FIG. 3 is a plan view showing the configuration of a building according to another embodiment.

An embodiment embodying the present invention will be described below with reference to the drawings. Note that FIG. 1 is a perspective view showing an outline of a unit-type building.

As shown in FIG. 1, the building 10 includes a building main body 12 provided on a foundation 11 and a roof portion 13 provided above the building main body 12. The building main body 12 is a two-story building having a first floor section 14 as a lower floor section and a second floor section 15 as an upper floor section, and is constructed by connecting a plurality of building units 20 to each other. The building unit 20 is manufactured in advance at a manufacturing factory, and then transported to a construction site by a truck or the like.

FIG. 2 shows a perspective view of the building unit 20. As shown in FIG. 2, the building unit 20 has four columns 21 arranged at its four corners, and four ceiling beams 22 and four floor beams 23 that connect the upper and lower ends of each column 21, respectively. It is equipped with The pillars 21, ceiling beams 22, and floor beams 23 form a rectangular parallelepiped-shaped skeleton (frame). The pillar 21 is made of rectangular cylindrical square steel. The ceiling beam 22 and the floor beam 23 are made of channel steel having a U-shaped cross section, and are installed so that their openings face each other.

A plurality of ceiling beams 25 are spanned between opposing ceiling beams 22 on the long sides of the building unit 20 at predetermined intervals. Similarly, a plurality of floor beams 26 are spanned at predetermined intervals between the opposing floor beams 23 on the long sides of the building unit 20. The ceiling beams 25 and the floor beams 26 are provided at the same intervals and at vertically corresponding positions. For example, the ceiling beam 25 is made of lip channel steel, and the floor beam 26 is made of square steel. A ceiling surface material is supported by a ceiling beam 25, and a floor surface material 27 is supported by a floor beam 26.

Next, the second floor portion 15 of the building 10 will be explained based on FIG. 3. FIG. 3 is a longitudinal sectional view showing the second floor portion 15 of the building 10.

The building 10 has an outer wall 30 that partitions the indoors (inside the building 10) and the outdoors. The outer wall 30 is attached to the frame of the building unit 20. Here, a ceiling beam 22 is shown, and the upper end portion of an outer wall 30 is attached to the ceiling beam 22.

A roof section 13 is provided above the second floor section 15. A roof support part 31 is provided on the upper flange of the ceiling beam 22, and the roof part 13 is supported above the ceiling beam 22 via the roof support part 31. In the roof part 13, the lower end side in the inclination direction protrudes toward the outdoors beyond the outer wall 30, forming an eave part.

A window portion 32 is formed in the outer wall 30. The window portion 32 is, for example, a sweeping window, and a glass door 33 is provided in the window portion 32 . In this case, sunlight can be brought into the indoor living space 34 through the window portion 32.

Here, it is conceivable to arrange a curtain box in the upper part of the living space 34 adjacent to the window part 32. However, if the curtain box is visible from the living space 34, the appearance of the ceiling may be impaired. Therefore, in this embodiment, in order to improve the appearance of the ceiling part, the following configuration is provided.

The ceiling portion of the second floor portion 15 has a low ceiling portion and a high ceiling portion that is provided along the window portion 32 and is higher than the low ceiling portion. In the ceiling part, a high ceiling space is formed above the low ceiling part by the high ceiling part. Below, a low ceiling part, a high ceiling part, and a high ceiling space will be explained.

As described above with reference to FIGS. 1 and 2, in the building unit 20, a plurality of ceiling beams 25 are spanned between a pair of opposing ceiling beams 22. The vertical dimension (height dimension) of the ceiling beam 25 is smaller than the vertical dimension (height dimension) of the ceiling beam 22, and more specifically, it is about 1/3 of the vertical dimension of the ceiling beam 22. . The lower surface of the ceiling beam 25 is set at the same height as the lower surface of the ceiling beam 22.

A first ceiling surface material 35, which is a ceiling surface material of a low ceiling portion, is supported on the lower surface side of the ceiling beam 25. In this embodiment, a field edge 36 is attached to the lower surface of the ceiling beam 25. The field edge 36 is provided along the ceiling beam 25. A first ceiling surface material 35 is attached to the lower surface of the field edge 36 with screws or the like. For example, the first ceiling panel material 35 is two layers of gypsum board. The ceiling surface formed by the first ceiling surface material 35 corresponds to a ceiling surface at a normal height.

A second ceiling surface material 37, which is a ceiling surface material of the high ceiling section, is supported on the upper surface side of the ceiling beam 25. In this embodiment, a base material 38A is attached to the upper surface of the lower flange of the ceiling girder 22, and a base material 38B is attached to the upper surface of the ceiling beam 25. The base material 38A is provided along the ceiling beam 22, and the base material 38B is provided along the ceiling beam 25. The upper surface of each base material 38A, 38B is set at the same height position, and a second ceiling surface material 37 is attached to each base material 38A, 38B with screws or the like. For example, the second ceiling panel material 37 is two layers of plasterboard.

In this case, a folding space 39 is formed that extends in the same direction as the ceiling beam 25 and is below the second ceiling panel 37 and above the first ceiling panel 35. This fold-up space 39 corresponds to a "high ceiling space". A curtain rail 40 is arranged in the folding space 39. In this embodiment, a ceiling finishing material 42 such as wooden plywood is attached to the lower surface of the second ceiling surface material 37. The curtain rail 40 is attached to the second ceiling surface material 37 via a ceiling finishing material 42.

The space below the curtain rail 40 in the fold-up space 39 is a space in which the first ceiling panel material 35 is not placed. In other words, the fold-up space 39 is a space connected to the living space 34. The curtain rail 40 is provided with a runner that moves along the curtain rail 40, and the upper end of the curtain 41 is connected to the runner. Thereby, the curtain 41 is supported by the curtain rail 40 in a suspended state.

A side wall portion 43 is provided between the first ceiling surface material 35 and the second ceiling surface material 37, parallel to the window portion 32, and partitioning the folding space 39. The side wall portion 43 is provided at an intermediate position between the ceiling beam 25 and the ceiling beam 22 in the direction from the ceiling beam 25 toward the window portion 32 side. In this embodiment, the side wall portion 43 is provided at a position near the center of the ceiling beam 25 and the ceiling beam 22. The side wall portion 43 is made of, for example, wooden plywood and extends along the ceiling beam 25.

Note that the side wall portion 43 may be provided at a position closer to the window portion 32 or at a position opposite to the window portion 32 than a position near the center between the ceiling beam 25 and the ceiling beam 22. By adjusting the position of the side wall portion 43 in the direction from the ceiling beam 25 toward the window portion 32 side, the size of the folding space 39 can be set.

The first ceiling surface material 35 overhangs from the side wall portion 43 toward the folding space 39 side, and an upper surface portion 45 made of wooden plywood is attached to the upper surface of the overhang portion 44. The side wall portion 43 is fixed to the first ceiling surface material 35 via the upper surface portion 45 at its lower end portion. Further, the side wall portion 43 is fixed to the second ceiling surface material 37 via the ceiling finishing material 42 at its upper end. Note that the ceiling finishing material 42 only needs to be attached to the second ceiling surface material 37 up to the position where the side wall portion 43 is provided. The upper surface portion 45 only needs to be attached to the first ceiling surface material 35 up to the position where the side wall portion 43 is provided.

On the opposite side of the folding space 39 with the side wall portion 43 in between, a compartment 47 is formed that is partitioned by the first ceiling surface material 35, the second ceiling surface material 37, and the side wall portion 43. The compartment 47 is a space isolated from the living space 34.

A ceiling heat insulating material 16 is provided in a space formed between the roof portion 13 and the first ceiling panel 35 or the second ceiling panel 37. The ceiling heat insulating material 16 is a fiber-based heat insulating material such as glass wool, and is provided to cover the first ceiling surface material 35 and the second ceiling surface material 37 from above.

Next, the folding space 39 and the compartment 47 will be explained using FIG. 4 in addition to FIG. 3. FIG. 4 is a plan view of the second floor portion 15 of the building 10.

In the folding space 39, a lighting device 46 having, for example, an LED (light emitting diode) as a light source is arranged above the projecting portion 44 of the first ceiling panel material 35. In this embodiment, the lighting device 46 is attached to the side wall portion 43 and is disposed above the projecting portion 44 of the first ceiling panel 35 . A plurality of lighting devices 46 are arranged at predetermined intervals (for example, at equal intervals) in the longitudinal direction of the side wall portion 43 (in other words, in the longitudinal direction of the ceiling beam 25).

In the compartment 47 , a power supply device 48 that supplies power to the lighting equipment 46 is arranged above the first ceiling panel 35 . The power supply device 48 is, for example, an electrical device including a transformer. Wiring 49 is connected to each lighting device 46 . These wiring lines 49 are led to the compartment 47 through wiring holes formed in the side wall portion 43 (not shown), and are connected to the power supply device 48.

Further, in the compartment 47, a curtain drive device 50 for moving a runner of the curtain rail 40 along the curtain rail 40 is arranged. The curtain drive device 50 includes an electric motor, and the runner moves along the curtain rail 40 as the electric motor is driven. Thereby, the opening and closing of the curtain 41 is performed electrically.

Note that instead of arranging a plurality of lighting devices 46 at predetermined intervals in the longitudinal direction of the side wall portion 43, linearly extending lighting devices may be arranged along the longitudinal direction of the side wall portion 43. Further, the lighting device is not limited to one using an LED as a light source, and may be a fluorescent lamp, an incandescent lamp, or the like.

The lighting equipment 46 may be attached to the upper surface side of the overhanging portion 44 of the first ceiling panel 35 instead of being attached to the side wall portion 43. Specifically, the lighting device 46 may be attached to the upper surface portion 45.

The overhanging portion 44 of the first ceiling surface material 35 and the tip of the upper surface portion 45 may be covered with a buffer member 51. For example, as shown in FIG. 3, a sheet-like buffering member 51 may be attached to the first ceiling surface material 35 and the upper surface portion 45 with an adhesive or the like. The buffering member 51 is formed of a flexible material such as rubber material or synthetic resin so as to prevent the curtain 41 from rubbing against the first ceiling surface material 35 and the upper surface portion 45 and causing damage to the curtain 41. All you have to do is stay there. Thereby, interference between the curtain 41 and the first ceiling surface material 35 and the upper surface portion 45 can be alleviated.

According to the configuration of this embodiment described in detail above, the following excellent effects can be obtained.

According to this embodiment, the curtain rail 40 is arranged in the folding space 39. In other words, the fold-up space 39 is used as a curtain box. Therefore, the appearance of the ceiling can be simplified compared to a configuration in which the curtain box is arranged in the upper part of the living space adjacent to the window. As a result, the appearance around the ceiling can be improved.

According to the present embodiment, the ceiling beam 25, which is a ceiling structure, is used, and the folding space is suitably created by the first ceiling panel material 35 and the second ceiling panel material 37 provided on the lower surface side and the upper surface side of the ceiling beam 25. 39 and compartment 47 can be formed. Further, the curtain rail 40 can be arranged within a desired range along the window portion 32 without causing interference with the ceiling beam 25.

According to this embodiment, the folding space 39 is a space for arranging the curtain rail 40 as well as a space for arranging the lighting equipment 46 . In particular, since the first ceiling panel material 35 extends beyond the side wall portion 43 toward the folding space 39, and the lighting device 46 is arranged above the projecting portion 44, indirect lighting by the lighting device 46 is possible. In addition, indirect lighting can be highlighted by lighting above the curtain 41.

According to the first ceiling surface material 35 and the second ceiling surface material 37, a compartment 47 divided in the vertical direction can be formed on the opposite side of the folding space 39 with the side wall portion 43 in between. In this case, by arranging the power supply device 48 and wiring 49 associated with the lighting equipment 46 using the compartment 47, the lighting equipment 46 can be suitably arranged even if the folding space 39 is a narrow space. can.

The compartment 47 is used as a space for arranging a curtain driving device 50 for electrifying the opening and closing of the curtain 41. As a result, it is possible to improve convenience for residents while keeping the appearance of the ceiling portion simple.

The second ceiling panel material 37 (ceiling panel material in the high ceiling section) is extended from above the folding space 39 to the upper side of the compartment 47, and the ceiling insulation material 16 is placed above the second ceiling panel material 37. The configuration was such that the In this case, not only the folding space 39 but also the compartment 47 can be provided separately from the ceiling insulation material 16, and the space for arranging the power supply device 48, curtain drive device 50, etc. in the compartment 47 can be appropriately set. Can be secured. That is, unlike a configuration in which the power supply device 48, the curtain driving device 50, etc. are simply arranged in the attic space, it is possible to isolate equipment from the ceiling heat insulating material 16.

The present invention is not limited to the above embodiments, and may be implemented, for example, as follows.

(1) The folding space 39 and the compartment 47 may be formed across a plurality of building units 20 instead of being formed so as to fit within one building unit 20.

FIG. 5 is a plan view of two building units 20 arranged with their girder surfaces facing each other. In FIG. 5, the same components as those shown in FIG. 4 are given the same reference numerals for convenience.

It is conceivable to form the living space 34 as a large space by connecting each building unit 20, and to form a relatively large window on the outer wall that partitions the living space 34 into indoor and outdoor areas. In this case, it may be necessary to arrange the curtain rail 40 corresponding to the window so as to cross the ceiling girder 22 of the building unit 20. In this embodiment, the folding space 39 and the compartment 47 are formed on the end face of the building unit 20 in a range that extends in a direction intersecting the ceiling beam 22 and straddles a pair of ceiling beams 22a facing each other. There is. That is, the ceiling girder 22a intersects with the folding space 39 and the partitioned room 47.

FIG. 6 is a cross-sectional view of one of the pair of ceiling beams 22a facing each other taken along a plane parallel to the girder plane of the building unit 20. A penetrating portion 52 that penetrates the ceiling beam 22a is formed in the ceiling beam 22a. The penetrating portion 52 of the ceiling beam 22a is formed to penetrate below the center of the web of the ceiling beam 22a in the vertical direction. That is, the penetrating portion 52 of the ceiling beam 22a is opened on the lower surface side of the ceiling beam 22a. The penetrating portion 52 of the ceiling girder 22a is formed with a width that allows the curtain rail 40 and the curtain 41 to be arranged in a direction parallel to the girder surface. The curtain rail 40 and the ceiling finishing material 42 are disposed in the fold-up space 39 through the penetrating portion 52 of the ceiling beam 22a. In addition, in the above-mentioned configuration, since a part of the pair of ceiling girders 22a facing each other is missing, it is preferable that structural reinforcement be performed to compensate for the missing part.

According to this embodiment, the ceiling beam 22a that intersects with the folding space 39 is formed with a penetrating portion 52 that penetrates the ceiling beam 22a. The curtain rail 40 passes through the penetrating portion 52 and is disposed in the folding space 39. Thereby, the curtain rail 40 can be arranged to correspond to a relatively large window.

(2) The fold-up space (high ceiling space) may be continuously formed in a range including an external corner or an internal corner of the building 10. Its specific configuration is shown in FIG. In addition, in FIG. 7, the folding space 39 and the compartment 47 are configured to be formed along the gable surface and girder surface of the building unit 20. In FIG. 7, the same components as those shown in FIG. 4 are given the same reference numerals for convenience.

In FIG. 7, a first outer wall 61 and a second outer wall 62 of the building 10 extend in a direction that intersects with each other, and a projecting corner 63 is formed by each of these outer walls 61 and 62. Each of the outer walls 61 and 62 is provided with a window. However, illustration of the window portion is omitted here. The folding space 39 extends along the first outer wall 61 and the second outer wall 62 and is formed in a range including the projecting corner 63. That is, the folding space 39 is continuously formed from the first outer wall 61 side to the second outer wall 62 side via the protruding corner portion 63. Accordingly, the curtain rail 40 can be arranged in the folding space 39 from the first outer wall 61 side to the second outer wall 62 side via the protruding corner portion 63. Note that the compartment 47 only needs to be formed along the folding space 39.

According to the above configuration, the curtain rail 40 can be suitably arranged to correspond to a relatively large window portion. Furthermore, in a configuration in which the curtain rail 40 is provided across the two outer walls 61 and 62, the pillars at the protruding corners are hidden when the curtain is drawn (curtain closed state), so the pillars at the protruding corners are not visible. This makes it possible to create the impression that the indoor space is larger than when the interior is closed.

In addition, instead of the configuration in which the fold-up space is formed in the range including the protruding corner part 63 formed by the two outer walls 61 and 62, the fold-up space is formed in the range including the inner corner part formed by the two outer walls 61 and 62. A structure in which a raised space is formed may also be used. In this case, the curtain rail may be disposed in the folding space from one side to the other of the two outer walls that intersect with each other via the inside corner.

(3) The first ceiling panel 35 that partitions the compartment 47 and the living space 34 may be provided with an opening/closing portion that allows access to the compartment 47 from the living space 34 side.

(4) The folding space 39 (high ceiling space) may have a configuration in which only the curtain rail 40 is provided without the lighting equipment 46.

(5) A curtain rail 40 or the like may be provided in the fold-up space 39 (high ceiling space) in the ceiling of the first floor portion 14 of the building 10, that is, in the space between the first and second floors.

(6) The building is not limited to a unit type building, and may be a building constructed using conventional wooden construction or a building constructed using iron shaft construction. Even in these buildings, it is preferable to have a structure in which a high ceiling section is provided along the window section, and a curtain rail is arranged in a high ceiling space formed by the high ceiling section.

10...Building, 32...Window section, 39...Folding space, 40...Curtain rail.

Claims (7)

A ceiling structure of a building having a window section,
It has a low ceiling part and a high ceiling part that is provided along the window part and is higher than the low ceiling part,
A ceiling structure for a building, characterized in that a curtain rail is arranged in a high ceiling space formed above the low ceiling by the high ceiling. The building has a ceiling beam and a ceiling beam installed in a state spanning between a pair of the ceiling beams,
A first ceiling surface material, which is a ceiling surface material of the low ceiling section, is supported on the lower surface side of the ceiling beam, and a second ceiling surface material, which is a ceiling surface material of the high ceiling section, is supported on the upper surface side of the ceiling beam. The facing material is supported,
The high ceiling space is characterized in that a space is formed that extends in the same direction as the ceiling beam and is below the second ceiling panel and above the first ceiling panel. The ceiling structure of a building according to claim 1. A first ceiling panel material, which is a ceiling panel material of the low ceiling section, and a second ceiling panel material, which is a ceiling panel material of the high ceiling section, is provided in parallel to the window section, and is provided in parallel to the window section, and is arranged in parallel with the window section, It has a side wall section that partitions the
2. The ceiling of a building according to claim 1, wherein the first ceiling panel overhangs from the side wall toward the high ceiling space, and lighting equipment is arranged above the overhang. structure. A compartment is formed on the opposite side of the high ceiling space across the side wall portion by the first ceiling material and the second ceiling material, and the lighting equipment is installed in the compartment. 4. The ceiling structure of a building according to claim 3, wherein a power supply device is arranged. A first ceiling panel material, which is a ceiling panel material of the low ceiling section, and a second ceiling panel material, which is a ceiling panel material of the high ceiling section, is provided in parallel to the window section, and is provided in parallel to the window section, and is arranged in parallel to the window section, and is provided between a first ceiling panel material that is a ceiling panel material of the low ceiling section and a second ceiling panel material that is a ceiling panel material of the high ceiling section. It has a side wall section that partitions the
A compartment partitioned by the first ceiling surface material and the second ceiling surface material is formed on the opposite side of the high ceiling space across the side wall portion, and in the compartment, the curtain rail is connected to the compartment. The ceiling structure of a building according to claim 1, further comprising a curtain driving device for opening and closing the hung curtain. The high ceiling space extends in a direction intersecting the ceiling beam, and is formed in a range that straddles the ceiling beam,
The ceiling beam that intersects with the high ceiling space has a penetrating portion that penetrates the ceiling beam in the width direction,
The building ceiling structure according to claim 1, wherein the curtain rail is arranged in the high ceiling space through the penetration part. The window portions are provided on two outer wall portions that intersect with each other,
The high ceiling space is formed in a range that extends along each of the outer walls and includes an outgoing corner or an incoming corner formed by each of the outer walls,
The building according to claim 1, wherein the curtain rail is arranged from one side to the other side of each of the wall parts via the protruding corner part or the inlet corner part. ceiling structure.

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