Panel device and its installation structure

Abstract

To provide a panel device capable of improving an appearance of a connecting part of a ceiling base connected in a longitudinal direction, and an installation structure thereof.SOLUTION: A panel device 1 includes: multiple ceiling bases 20 that are long in a first direction and held being suspended by a suspension member 2 at a position spaced in a second direction orthogonal to the first direction; a panel 10 in which an end 12 thereof in the second direction is held by the ceiling bases. The ceiling bases include a placement piece 27 where the end of the panel in the second direction is placed, and placement pieces are in contact with each other and connected to the adjacent ceiling base in the first direction. The placement piece protrudes longer than the upper part in the first direction so that a gap is formed between the upper side parts 26 and 21 than the mutual placement pieces.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a panel device and an installation structure thereof. [Background technology]

[0002] BACKGROUND ART Conventionally, a ceiling structure in which a ceiling panel is installed on a ceiling substrate that is suspended and held by a suspension member has been known. For example, Patent Document 1 listed below discloses a connection structure in which two inverted T-shaped T-bars with flanges at the lower ends of the vertical pieces that support the ceiling panel are arranged in a straight line and connected by connecting fittings. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 8-60794 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with the connection structure described in Patent Document 1, there is a concern that if there are processing errors or the like on the end surfaces where the T-bars butt together, gaps may easily form between the flange portions on the indoor side, and further improvements are desired.

[0005] The present invention has been made in consideration of the above-mentioned situation, and aims to provide a panel device and its installation structure that can improve the appearance of the connection parts of the ceiling substrate that are connected in the longitudinal direction. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the panel device of the present invention comprises a plurality of ceiling substructures that are long in a first direction and suspended from a hanging member at positions spaced apart in a second direction perpendicular to the first direction, and a panel whose end in the second direction is held by the ceiling substructure, wherein the ceiling substructure has a mounting piece portion on which the end in the second direction of the panel is placed, and when connected to adjacent ceiling substructures in the first direction, the mounting piece portions abut against each other and the mounting piece portions protrude in the first direction beyond the upper portions so that a gap is formed between the upper portions of the mounting piece portions.

[0007] In order to achieve the above-mentioned object, the installation structure for a panel device of the present invention is an installation structure for a panel device of the present invention, characterized in that the connection portions between the ceiling substrates adjacent to each other in the first direction and the butt portions between the panels adjacent to each other in the first direction held by these ceiling substrates are installed so that they are in different positions in the first direction. [Effects of the Invention]

[0008] The panel device and its installation structure according to the present invention are configured as described above, and therefore can improve the appearance of the connecting portions of the ceiling substrate that are connected in the longitudinal direction. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a partially cutaway schematic perspective view showing an example of a panel device according to an embodiment of the present invention and an example of an installation structure thereof. [Figure 2] FIG. 2 is a schematic perspective view of the panel device. [Figure 3] FIG. 2 is a partially cutaway schematic exploded perspective view of the panel device. [Figure 4] 1(a) and 1(b) are schematic, partially cutaway, longitudinal cross-sectional views of the panel device. [Figure 5] FIG. 2 is a schematic exploded vertical cross-sectional view of the panel device. [Figure 6]1(a) and 1(b) are schematic diagrams showing an example of the construction procedure of the panel device, where 1(a) is a schematic exploded vertical cross-sectional view and 1(b) is a schematic perspective view with a part cut away. [Figure 7] 10(a) and 10(b) are schematic exploded vertical cross-sectional views of the construction procedure. [Figure 8] 1A is a schematic plan view, partly cut away, of the panel device, FIG. 1B is a schematic side view, partly cut away, of the panel device, and FIG. 1C is a schematic bottom view, partly cut away, of the panel device. [Figure 9] 1(a) and 1(b) are schematic perspective views, partly cut away, of the panel device. [Figure 10] 1(a) and 1(b) are partially cutaway schematic exploded perspective views of the panel device. [Figure 11] 1(a) is a schematic, partially cutaway bottom view of the panel device, and FIG. 1(b) is a schematic, partially cutaway side view of the panel device. [Figure 12] 1(a) is a schematic vertical cross-sectional view, partly broken away, showing a modified example of a panel provided in the panel device, and FIG. 1(b) is a schematic exploded vertical cross-sectional view of a panel device provided with the panel. DETAILED DESCRIPTION OF THE INVENTION

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In some drawings, some of the detailed reference numerals used in other drawings are omitted. In the following embodiment, directions such as the up-down direction will be described based on the state in which an example of a panel device according to this embodiment is installed. 1 to 12 are diagrams that schematically show an example of a panel device according to the present embodiment, a modified example of a panel, and an example and a modified example of an installation structure (panel installation structure) for the panel device.

[0011] 3 and 4, the panel device 1 according to this embodiment includes a frame 20 that forms a ceiling substrate that is long in a first direction and arranged at intervals in a second direction. The panel device 1 includes an equipment mounting panel 10 that forms a panel whose end 12 in the second direction is held by the frame 20. This panel device 1 may be installed as a ceiling for relatively small buildings such as residences and offices, or as a ceiling for various relatively large buildings such as gymnasiums, halls, shopping malls, factories, and schools.

[0012] As shown in FIGS. 1 and 2 , a panel installation structure using this panel device 1 includes a ceiling panel 9 and an equipment mounting panel 10 that is long in a first direction and installed on a ceiling substrate (7, 20) suspended from a hanging member 2. In this panel installation structure, as shown in FIGS. 4( a) and 4(b), the equipment mounting panel 10 is installed so as to be positioned higher than the ceiling panel 9. With this configuration, even when equipment 8 is installed on the equipment mounting panel 10 so that it protrudes toward the interior of the room, the amount of protrusion of the equipment 8 from the ceiling panel 9 can be reduced, improving the appearance. In this panel installation structure, the ceiling panels 9 on both sides of the equipment mounting panel 10 in a second direction perpendicular to the first direction are installed so as to cover the interior sides of the second-direction ends 12 of the equipment mounting panel 10. With this configuration, the ceiling panels 9 on both sides in the second direction cover the second-direction ends 12 of the equipment mounting panel 10, improving the appearance compared to a structure in which a ceiling bar is largely exposed between them.

[0013] The equipment mounting panel 10 is held by a frame 20 that forms the ceiling substrate and extends in a first direction. With this configuration, the equipment mounting panel 10, which is long in the first direction, can be stably held by the frame 20 that extends in the first direction. The ends 12, 12 of the equipment mounting panel 10 in the second direction are fixed to a pair of frames 20, 20 that are spaced apart in the second direction and that form the ceiling substrate and extend in the first direction. With this configuration, the ends 12, 12 of the equipment mounting panel 10 in the second direction are fixed to the pair of frames 20, 20 that are suspended and held by the hanging member 2, and these are integrated, allowing the equipment mounting panel 10 to be installed stably.

[0014] The frame 20 is suspended and held by the hanging member 2. As shown in FIG. 3 , the frame 20 is elongated in the first direction and spaced apart in the second direction, and includes a pair of panel holding portions 25 that hold the second-directional end portions 12 of the equipment mounting panel 10. The frame 20 also includes a pair of suspended portions 21 that are connected to the panel holding portions 25, and that have insertion holes 24, through which the hook pieces 4a of the hanging member 2 are inserted, provided at multiple locations spaced apart in the first direction. With this configuration, the panel holding portions 25 that hold the equipment mounting panel 10 can be suspended by inserting the hook pieces 4a of the hanging member 2 into the insertion holes 24 of the suspended portions 21, improving workability.

[0015] The panel device 1 includes frames 20, 20 that each have suspended portions 21, 21 and panel holding portions 25, 25 and that constitute a pair of ceiling substrates that are spaced apart in the second direction. With this configuration, compared to a configuration in which the pair of panel holding portions 25, 25 and the pair of suspended portions 21, 21 that hold the equipment mounting panel 10 are integrally provided via, for example, a U-shaped connecting portion, it is possible to finely adjust the suspension position of each frame 20, 20 individually when suspending the frames. Since the pair of frames 20, 20 have the same configuration, an example of a specific configuration will be described below using one of the frames 20 as an example. The panel device 1 includes ceiling panels 9, 9 arranged on both sides in the second direction of the equipment mounting panel 10. With this configuration, a ceiling can be formed by the equipment mounting panels 10 on which various equipment 8 can be mounted and the ceiling panels 9.

[0016] The panel device 1 includes rafters 7, 7 that are spaced apart in the first direction on both sides of the equipment mounting panel 10 in the second direction and extend in the second direction to hold the ceiling panels 9, 9. The panel device 1 includes rafters 6 that are arranged parallel to the panel holding portion 25 and the suspended portion 21 and that hold the rafters 7. In a panel installation structure using this panel device 1, the ceiling panels 9, 9 on both sides of the equipment mounting panel 10 in the second direction are supported by the rafters 6 that are arranged parallel to the frame 20 to form a ceiling substrate and are held by the rafters 7 that extend in the second direction. This configuration prevents the panel holding portion 25 (frame 20) that holds the equipment mounting panel 10 from interfering with the rafters 7 that hold the ceiling panel 9 or the rafters 6 that hold them. Furthermore, the ceiling panel 9 and the equipment mounting panel 10 can each be held by a different ceiling substrate (rafters 7 and panel holding portion 25 (frame 20)). In other words, the joists 7 and joist supports 6 that suspend the ceiling panel 9 and the frame 20 that suspends the equipment mounting panel 10 are not dependent on each other, and are installed separately, so to speak. In other words, the weight of the equipment mounting panel 10 is not applied to the joists 7 and joist supports 6 that suspend the ceiling panel 9. This makes it possible, for example, to provide earthquake-resistant reinforcement only to the frame 20 that suspends the equipment mounting panel 10.

[0017] As shown in Figure 1, panel device 1 includes hanging members 2 arranged at multiple locations spaced apart in the first and second directions, and each holding a soffit support 6 and a suspended portion 21. With this configuration, the suspended portion 21 that holds the equipment mounting panel 10 can be held by a general hanging member 2 that holds the soffit support 6. In other words, the hanging member 2 that holds the ceiling panel 9 and the hanging member 2 that holds the equipment mounting panel 10 can be made into a common part. The suspension member 2 is equipped with suspension bolts 3 that are threaded into female threaded members such as inserts that are provided at multiple locations at intervals in the first and second directions on the upper layer slab or steel frame that serves as the suspension base, and that are arranged to extend in the vertical direction perpendicular to the first and second directions. The suspension member 2 is equipped with hangers 4 that are held relative to the suspension bolts 3 so that their vertical positions can be adjusted.

[0018] As shown in FIG. 5 , the hanger 4 includes a support piece having an insertion hole through which the suspension bolt 3 is inserted, and a hanging piece that hangs down from the support piece. The hook piece 4a is bent upward from a bottom piece provided at the lower end of the hanging piece. When viewed in the first direction, the hanger 4 has a generally U-shaped (generally C-shaped) opening upward. In the illustrated example, the upper end of the hook piece 4a has a bent portion that narrows the opening, and a retaining protrusion is provided inside the bent portion. The upper end of the hook piece 4a has an inclined shape that widens the opening. The hangers 4 are provided above and below the support piece and are fixed to the suspension bolt 3 by being sandwiched by nuts threaded onto the suspension bolt 3. As shown in FIGS. 1 and 3 , some of the multiple hangers 4 are equipped with brace mounting brackets 5 to which the lower ends of braces (not shown) are attached. The suspension member 2 including this hanger 4 is not limited to the above configuration, but may be a known suspension member used as a suspension member for a ceiling substrate of a suspended ceiling, or may have various other configurations.

[0019] The soffit supports 6 are elongated in a first direction and arranged at multiple locations at intervals in a second direction to form a steel ceiling substructure (lightweight ceiling substructure). The soffit supports 6 may be channel-shaped with a horizontal opening. The soffit supports 6 are attached to the hangers 4 by being inserted through the upper openings of the hangers 4 with the elastic deformation of the hooking pieces 4a, and may be fixed with fasteners such as screws. The dimension in the up-down direction from the bottom piece of the hanger 4 to the retaining protrusion is approximately the same as the dimension of the soffit support 6 in the same direction. The dimension in the second direction between the hanging piece of the hanger 4 and the lower end portion of the hooking piece 4a is approximately the same as the dimension of the soffit support 6 in the same direction. The steel ceiling substructure may also include a soffit support joint that joins adjacent soffit supports 6, 6 in the first direction.

[0020] The rafters 7 are arranged in multiple locations, elongated in the second direction and spaced apart in the first direction, to form a steel ceiling substructure (lightweight ceiling substructure). The rafters 7 are arranged on at least one of both sides of the location where the equipment mounting panel 10 is to be installed in the second direction and, if necessary, both sides in the first direction, so as to surround the location where the equipment mounting panel 10 is to be installed. In other words, the equipment mounting panel 10 is held by a frame 20 that is arranged in place of the rafters 7 in locations where no rafters 7 are installed. The rafters 7 may be channel-shaped and open upward, or may have lips that fold back at the top ends of both side walls. The rafters 7 may be held to the rafter support 6 via known clips as appropriate. The steel ceiling substructure may also have rafter joints that join adjacent rafters 7, 7 in the second direction. Instead of such a joist 7, the ceiling base for holding the ceiling panel 9 may be a so-called T-bar having a flange at its lower end on which the end of the ceiling panel 9 rests.

[0021] The ceiling panel 9 has a substantially rectangular shape in a plan view (seen in the thickness direction). In the illustrated example, the first direction of the ceiling panel 9 is the panel width direction, and the second direction is the panel length direction. Each end of the ceiling panel 9 in the first direction is held by the rafters 7, 7 spaced apart in the first direction. The ceiling panel 9 may be fixed at each end in the first direction directly to the rafters 7, 7 with fasteners such as screws, or may be fixed to the rafters 7, 7 via fixing members or hooking members attached to each end in the first direction. The dimension of the ceiling panel 9 in the first direction, i.e., the width dimension, may correspond to the pitch of the rafters 7, 7 and may be, for example, approximately 300 mm to 1200 mm. The dimension of the ceiling panel 9 in the second direction, i.e., the length dimension, may be, for example, approximately 600 mm to 2000 mm. The thickness dimension of the ceiling panel 9 may be, for example, approximately 3.0 mm to 20.0 mm. The ceiling panel 9 may be a known ceiling material such as gypsum board, calcium silicate board, or rock wool board, or may include a foamed resin or fiber-based base material and may be laminated with a reinforcing layer such as a flame-retardant layer or a fiber-reinforced resin layer. The unit area (1 m) of the ceiling structure including the ceiling panel 9 and the steel ceiling substrate is 2 The ceiling panel 9 and the steel ceiling base may be of an appropriate mass so that the mass per unit is 2.0 kg or less.

[0022] The frame 20 is positioned between the sills 7, 7 that are spaced apart in the second direction and face each other, with its longitudinal direction perpendicular to the longitudinal direction of the sills 7. The frame 20 has a generally uniform shape along its entire length. As shown in FIG. 3 , the insertion hole 24 of the frame 20 is an elongated hole extending in the first direction so that the hooking position of the hooking piece 4a can be adjusted in the first direction. With this configuration, the hooking position of the hooking piece 4a of the hanging member 2 can be adjusted in the first direction to hang the suspended part 21. The minor axis of the insertion hole 24 along the second direction corresponds to the thickness of the hooking piece 4a, whose thickness direction is the second direction. The minor axis of the insertion hole 24 is appropriately sized so that the anti-detachment protrusion provided on the hooking piece 4a can be inserted therethrough. The major axis of the insertion hole 24 may be set to an appropriate dimension depending on the necessary adjustment margin for the hooking position of the hooking piece 4a in the first direction, and from the viewpoint of strength, etc. The major axis of the insertion hole 24 may be, for example, about 1.5 to 5 times the width of the hooking piece 4a in the first direction.

[0023] As shown in FIGS. 4( a) and 4(b), the frame 20 includes a mounting piece 27 that constitutes a mounting portion on which the second-direction end 12 of the equipment mounting panel 10 is placed. With this configuration, the second-direction end 12 of the equipment mounting panel 10 can be placed and held (temporarily held) on the mounting piece 27, thereby reducing the load on the worker. The mounting piece 27 is generally strip-shaped and arranged with its thickness direction aligned vertically. The thickness of the mounting piece 27 may be appropriately determined from the perspectives of strength and weight reduction. The width of the mounting piece 27 along the second direction may be appropriately determined so that the second-direction end 12 of the equipment mounting panel 10 can be placed thereon.

[0024] When the frame 20 is connected to an adjacent frame 20 in the first direction, the mounting pieces 27, 27 abut against each other and a gap is formed between the upper portions of the mounting pieces 27, 27. With this configuration, as shown in FIG. 8(c), the mounting pieces 27, 27, which tend to be conspicuous from the interior side when the frames 20, 20 adjacent in the first direction are connected, can be effectively abutted against each other, improving the appearance. In other words, even if a processing error or the like occurs, the mounting pieces 27, 27 protrude in the first direction from the upper portions, preventing the upper portions above the mounting pieces 27, 27 from abutting against each other and forming a gap between the mounting pieces 27, 27.

[0025] In this embodiment, the panel installation structure is installed so that the connection portions between adjacent frames 20, 20 in the first direction and the butt portions between adjacent equipment mounting panels 10, 10 held by these frames 20, 20 in the first direction are positioned differently in the first direction. This configuration ensures better straightness than a structure in which the connection portions between adjacent frames 20, 20 in the first direction and the butt portions between adjacent equipment mounting panels 10, 10 in the first direction are positioned in the same position in the first direction. This more effectively reduces the occurrence of gaps between the mounting pieces 27, 27. In other words, the straightness of either the frames 20, 20 or the equipment mounting panels 10, 10 can be ensured by the other, thereby preventing gaps from occurring at the connection portions and butt portions. In this panel installation structure, the connection portions between adjacent frames 20, 20 in the first direction on both sides in the second direction are positioned to coincide with each other in the first direction. In this panel installation structure, the frames 20, 20 whose length is an integer multiple of the length of the equipment mounting panel 10 may be installed so that the connection portion between them is located at approximately the longitudinal center of the equipment mounting panel 10. For example, the length of the equipment mounting panel 10 and the length of the frame 20 may be approximately the same. In this case, a marker portion may be provided in the longitudinal center of the frame 20 to mark the butt joint portion of the equipment mounting panels 10, 10 adjacent in the first direction.

[0026] The frame 20 is provided with a rising piece 26 that rises from the mounting piece 27 and is arranged to face the end face of the end 12 of the equipment mounting panel 10 in the second direction. This rising piece 26 faces the end face of the end 12 of the equipment mounting panel 10 in the second direction and constitutes a fixing piece through which a fastener that fixes the equipment mounting panel 10 passes. With this configuration, the equipment mounting panel 10 can be fixed to the frame 20 via the fastener. The rising piece 26 and the mounting piece 27 constitute the panel holding portion 25. The rising piece 26 is provided so as to rise from the edge of the mounting piece 27 on the outside in the second direction (on the outside in the second direction of the equipment mounting panel 10) and has a generally band-like shape arranged so that its thickness direction is in the second direction. In other words, the mounting piece portions 27 are provided so as to protrude in directions facing each other from the lower end edges of the rising piece portions 26 of the pair of frames 20 arranged with a gap in the second direction.

[0027] The thickness of the rising piece 26 may be set to an appropriate size from the viewpoint of strength or weight reduction, or may be the same thickness as the mounting piece 27. The width of the rising piece 26 in the vertical direction may be set to an appropriate size so that a fastener for fixing the equipment mounting panel 10 can pass through, or may be larger than the thickness of the equipment mounting panel 10. The rising piece 26 constitutes an upper portion that is higher than the mounting piece 27. In other words, as shown in FIG. 8(b), the rising piece 26 is arranged so that a gap is formed between the rising piece 26 adjacent in the first direction when the mounting piece portions 27, 27 of the frames 20, 20 adjacent in the first direction are in contact with each other. In other words, the rising piece 26 is formed so that each end portion in the first direction of the rising piece 26 is positioned more inward in the first direction than each end portion in the first direction of the mounting piece 27. The protruding dimension of the mounting piece 27 that protrudes in the first direction beyond the rising piece 26 may be an appropriate dimension so that the rising piece portions 26, 26 adjacent in the first direction do not abut against each other due to processing errors or the like.

[0028] Suspended portion 21 of frame 20 is provided with hooked piece 23, which extends outward in the second direction from the upper end of rising piece 26 and has insertion hole 24. With this configuration, hooked piece 23, rising piece 26, and placing piece 27 form at least a Z-shape, which can improve the strength of panel holding portion 25 and suspended portion 21 compared to, for example, an L-shaped configuration. The hook piece 23 is generally strip-shaped and arranged with its thickness direction aligned with the vertical direction. The insertion hole 24 is formed by penetrating the hook piece 23 in the thickness direction. The width dimension of the hook piece 23 along the second direction may be an appropriate dimension so that the insertion hole 24 can be formed and from the viewpoint of weight reduction, etc. Suspended portion 21 is provided with a fixed piece 22 that rises from the outer edge of hooked piece 23 in the second direction and is fixed to hanger 4. Fixed piece 22 is generally strip-shaped and arranged with its thickness direction in the second direction. An upper end of fixed piece 22 is provided with an upper end piece that protrudes toward the opposite side in the second direction (the center side of facility equipment mounting panel 10 in the second direction, the inside in the second direction). This upper end piece is generally strip-shaped and arranged with its thickness direction in the up-down direction. The thickness dimensions of this upper end piece, fixed piece 22, and hooked piece 23 may be appropriately determined from the perspectives of strength and weight reduction, or may be the same thickness as rising piece 26.

[0029] The suspended part 21, which includes the upper end piece, fixed piece 22, and hooked piece 23, is shaped like a channel steel that opens sideways. The vertical dimension of the suspended part 21 is approximately the same as the vertical dimension of the soffit support 6. The dimension of the hooked piece 23 from the fixed piece 22 to the insertion hole 24 in the second direction and the dimension of the upper end piece in the same direction are approximately the same as the dimensions of the lower end piece and upper end piece of the soffit support 6 in the same direction. In other words, the upper end piece, fixed piece 22, and the section of the hooked piece 23 up to the insertion hole 24 of the suspended part 21 are approximately the same size and shape as the soffit support 6 so that it can be suspended by the same hanging member 2 as the soffit support 6. Suspended part 21 constitutes an upper portion that is higher than mounting piece portion 27. In other words, as shown in Figures 8(a) to (c), suspended part 21 is arranged so that a gap is formed between suspended parts 21 adjacent in the first direction when mounting piece portions 27, 27 of frames 20, 20 adjacent in the first direction are in contact with each other. In other words, suspended part 21 is formed so that each end in the first direction is located more inward in the first direction than each end in the first direction of mounting piece portion 27.

[0030] In the illustrated example, a notched recessed step is formed at each end of the hooked piece 23 in the first direction so that the portion on the fixing piece 22 side is more inward in the first direction than the portion on the rising piece 26 side. Each end of the portion on the rising piece 26 side of the hooked piece 23 in the first direction is formed to coincide with each end of the rising piece 26 in the first direction in the first direction. Each end of the portion on the fixing piece 22 side of the hooked piece 23 in the first direction is formed to coincide with each end of the fixing piece 22 in the first direction in the first direction. In other words, the gaps between the fixing piece 22 side portions of the hooked pieces 23, 23 adjacent in the first direction, between the fixing pieces 22, 22, and between the upper end pieces are larger than the gaps between the rising pieces 26, 26 and between the rising piece 26 side portions of the hooked pieces 23, 23 adjacent in the first direction. The configuration in which the mounting piece portions 27, 27 of adjacent frames 20, 20 in the first direction abut each other and a gap is formed between the upper portions of the mounting piece portions 27, 27 is not limited to this configuration, and various other variations are possible.

[0031] 4(a) and 4(b), the frame 20 is provided with extension pieces 29 that extend into the room and face the end faces 9a of the ceiling panels 9 on both sides in the second direction. With this configuration, the end faces 9a of the ceiling panels 9 arranged on both sides of the equipment mounting panel 10 in the second direction can be made less noticeable by the extension pieces 29 of each frame 20. The extension piece 29 is provided so as to hang down from the edge of the mounting piece portion 27 on the side opposite to the second direction, and is formed in a generally band-like shape with its thickness direction aligned with the second direction. The end of the ceiling panel 9 on the extension piece 29 side is positioned below the mounting piece portion 27. The thickness of the extension piece 29 may be set to an appropriate dimension from the viewpoints of strength and weight reduction, or may be the same thickness as the mounting piece portion 27. The width of the extension piece 29 in the vertical direction may be set to an appropriate dimension so that the end surface 9a of the opposing ceiling panel 9 is less noticeable and so that weight reduction is achieved. The width of the extension piece 29 in the vertical direction may be set to an appropriate dimension so that the lower end of the extension piece 29 is positioned approximately at the same height as or lower than the lower surface (indoor side) of the ceiling panel 9. The extension piece 29 is provided over the entire length of the mounting piece portion 27. In other words, as shown in FIG. 8(b), when the mounting piece portions 27, 27 of frames 20, 20 adjacent in the first direction abut against each other, the respective extension pieces 29, 29 also abut against each other. The frame 20, like the sill 7 and sill support 6, may be made of steel formed from various metallic materials.

[0032] The facility equipment mounting panel 10 has a generally rectangular flat plate shape that is long in a first direction. The length of the facility equipment mounting panel 10 in the first direction may be, for example, approximately 600 mm to 2000 mm. In the illustrated example, the length of the facility equipment mounting panel 10 in the first direction is approximately twice the width of the ceiling panel 9 in the first direction (see FIGS. 1 and 2). The width of the facility equipment mounting panel 10 in the second direction may be a dimension corresponding to the dimensions of the facility equipment 8 when various types of facility equipment 8 are installed on the underside thereof, and may be, for example, approximately 150 mm to 600 mm. The thickness of the facility equipment mounting panel 10 may be approximately the same as the thickness of the ceiling panel 9. 3 and 5, the equipment mounting panel 10 includes a panel main body 13 and end protection members 16, 16 attached to the panel main body 13 so as to cover the end faces and upper surface of each end 15, 15 in the second direction of the panel main body 13. With this configuration, each end 15, 15 in the second direction of the panel main body 13 can be protected by these end protection members 16, 16 on both sides in the second direction.

[0033] The panel device 1 includes anti-floating members 30 that are arranged across the upper surfaces of the end protection members 16, 16 on both sides in the second direction and whose second-direction ends are fixed to the pair of frames 20, 20, respectively. With this configuration, the pair of frames 20, 20 that hold the second-direction ends 12, 12 of the equipment mounting panel 10 can be connected by the anti-floating members 30, preventing the pair of frames 20, 20 from separating. The anti-floating members 30 prevent the equipment mounting panel 10 from floating up. Furthermore, because the anti-floating members 30 abut against the end protection members 16, 16, damage to the panel body 13 can be reduced even if the panel body 13 is weak. In other words, the anti-floating members 30 can function both to connect the pair of frames 20, 20 and to prevent the equipment mounting panel 10 from floating up, thereby reducing the number of components. The anti-floating member 30 prevents the equipment mounting panel 10 from floating up, which improves workability when attaching the equipment 8 to the panel body 13 and drilling holes after installing the equipment mounting panel 10. An example of a specific configuration of the anti-floating member 30 will be described later.

[0034] The panel body 13 has a rectangular flat plate shape that is elongated in the first direction. The panel body 13 may be a board generally used as a ceiling board. The panel body 13 may be formed from the same panel material as the ceiling panel 9 described above, or may be formed from a different panel material. The panel body 13 may be made of, for example, a relatively fragile gypsum board, a calcium silicate board, or a foam resin board, so that holes can be easily drilled at the construction site for the installation and wiring of the equipment 8. The equipment 8 installed on the panel body 13 is not limited to a fire detector as shown in the figure, but may also be a lighting fixture, audio equipment, a fan, a clothes drying device, a storage device, or various other equipment.

[0035] The edge protection member 16 constitutes the edge 12 of the equipment mounting panel 10, which is placed on the mounting piece 27 of the frame 20. One of the mounting piece 27 and the edge protection member 16 is provided with an engagement recess 18 into which an engagement protrusion 28 provided on the other is inserted. With this configuration, by inserting the engagement protrusion 28 into the engagement recess 18, the equipment mounting panel 10 can prevent the pair of frames 20, 20 suspended and held by the hanging members 2, 2 from moving apart. Since the anti-floating member 30 can be fixed in this state with movement suppressed, workability can be improved. Furthermore, the equipment mounting panel 10, which is temporarily held by being placed on the mounting piece 27, 27, can be prevented from unintentionally falling. In this embodiment, the edge protection member 16 is provided with the engagement recess 18, and the mounting piece 27 is provided with the engagement protrusion 28. As shown in Fig. 5, the engaging protrusions 28 of the mounting piece 27 are provided so as to protrude upward from the upper surface of a middle portion of the mounting piece 27 in the second direction. As shown in Fig. 3, the engaging protrusions 28 are provided at a plurality of locations spaced apart in the longitudinal direction of the frame 20. The engaging protrusions 28 are generally flat and arranged so that their thickness direction is the second direction, and are provided so as to extend in the first direction, which is the longitudinal direction of the frame 20. In the illustrated example, the engaging protrusions 28 are provided in the mounting piece 27 in a bent shape.

[0036] 3, the end protection member 16 is elongated in the first direction and is provided over substantially the entire length of the equipment mounting panel 10. The end protection members 16, 16 on both sides in the second direction have the same configuration, so an example of the specific configuration will be described below using one of the end protection members 16 as an example. The edge protection member 16 has a uniform shape along its entire length. As shown in FIG. 5 , the edge protection member 16 is provided with a receiving groove 17 that receives the edge 15 of the panel main body 13 in the second direction. The receiving groove 17 opens toward the center of the panel main body 13 in the second direction and extends along the entire length of the edge protection member 16. The groove width along the vertical direction of the receiving groove 17 may be larger than the thickness of the panel main body 13 so as to ensure an adhesive layer that fixes the edge protection member 16 to the edge 15 of the panel main body 13. The groove depth along the second direction of the receiving groove 17 may be an appropriate dimension so as to be able to hold the edge 15 of the panel main body 13, and from the perspectives of reinforcing the edge 15 and reducing weight. The end protection member 16 is provided with an upper piece portion 16b that defines one side of the receiving groove 17 in the groove width direction and covers the upper surface of the end portion 15 of the panel main body 13, a lower piece portion 16c that defines the other side of the receiving groove 17 in the groove width direction and covers the lower surface of the end portion 15, and a side piece portion 16d that defines the groove bottom of the receiving groove 17 and covers the end surface of the end portion 15. In the illustrated example, the width dimension of the upper piece portion 16b along the second direction is larger than the width dimension of the lower piece portion 16c along the second direction, but this is not limited to this example.

[0037] The engagement recess 18 of the end protection member 16 is provided so as to be located outside the receiving groove 17 in the second direction. The engagement recess 18 is groove-shaped, opening downward and extending the entire length of the end protection member 16. The groove depth dimension of the engagement recess 18 in the vertical direction and the groove width dimension in the second direction are appropriately dimensioned so as to be able to receive the above-mentioned engagement protrusion 28. One side of the groove width direction of the engagement recess 18 is defined by a side piece 16d of the end protection member 16. The groove bottom of the engagement recess 18 is defined by a bottom piece extending outward in the second direction from a vertical midpoint of the side piece 16d. The other side of the groove width direction of the engagement recess 18 is defined by an outer piece hanging down from the tip of the extending end of the bottom piece. The illustrated example shows an example in which a lower end protrusion protruding outward in the second direction from the lower end of the outer piece. This lower end protrusion is provided so that its lower surface (indoor side surface) is approximately flush with the lower surface (indoor side surface) of the lower piece portion that defines the receiving groove 17. The engagement recess 18 is not limited to the above-described configuration, and may have various other configurations.

[0038] The end protection member 16 is provided with a receiving recess 19 that receives the shank of a fastener that penetrates the rising piece 26 (see also FIGS. 7(a) and 7(b)). This receiving recess 19 is groove-shaped and opens outward in the second direction (toward the rising piece 26) and extends the entire length of the end protection member 16. The groove depth dimension of this receiving recess 19 along the second direction and the groove width dimension along the vertical direction are set to appropriate dimensions so that the shank of a fastener that penetrates the rising piece 26 can be received. One side of the groove width direction of this receiving recess 19 is defined by a bottom piece that defines the groove bottom of the engagement recess 18. The groove bottom of the receiving recess 19 is defined by a side piece 16d that defines the groove bottom of the receiving groove 17 and an extending side piece 16e that extends upward so as to be continuous with the side piece 16d. The other side of the receiving recess 19 in the groove width direction is defined by an upper end projection 16f that projects outward in the second direction from the upper end of the extending side piece 16e, which is the tip end in the extending direction. In the example shown, an inner projection 16g that projects inward in the second direction from the upper end of the extending side piece 16e is provided. The upper surfaces of this inner projection 16g and the upper end projection 16f form the upper surface of the end protection member 16.

[0039] The edge protection member 16 may be attached to the edge 15 of the panel main body 13 using an appropriate fastener, adhesive, or pressure-sensitive adhesive. Alternatively, the edge protection member 16 may be attached to the edge 15 of the panel main body 13 by fitting (press-fitting) the edge 15 into the receiving groove 17. Depending on the fixing method, the groove width dimension of the receiving groove 17 along the vertical direction may be the same as the thickness dimension of the panel main body 13 or may be slightly smaller than the thickness dimension of the panel main body 13. The edge protection member 16 may be an extrusion molded product made of a metal material or a hard synthetic resin material. The shape of the edge protection member 16 is not limited to the above-mentioned shapes and may be various other shapes, including a shape that has a portion that covers at least the end face and upper surface of the edge 15 of the panel main body 13.

[0040] 4(a) and 5, the anti-floating member 30 is elongated in the second direction so as to connect the frames 20, 20 on both sides in the second direction. The lower surfaces of each end portion in the second direction of the main body portion of this anti-floating member 30, which is a substantially rectangular flat plate in plan view, abut against the upper surfaces of the end protection members 16, 16 on both sides in the second direction of the facility equipment mounting panel 10. The upper surface of the main body portion of this anti-floating member 30 is positioned lower than the upper surfaces of the hooking pieces 23 of the frames 20. Each end of the anti-floating member 30 in the second direction is provided with hanging pieces 32, 32 that are arranged to hang down outside the second direction of each of the end protection members 16, 16 on both sides of the anti-floating member 30. With this configuration, it is possible to prevent the facility equipment mounting panel 10 from moving in the second direction relative to the anti-floating member 30 when the anti-floating member 30 is fixed. The above-mentioned upright pieces 26 of the frame 20 are arranged to be located outside the hanging pieces 32 in the second direction, and form fixing pieces through which fasteners attached to the hanging pieces 32 pass. With this configuration, it is possible to fix the anti-floating member 30 to the frame 20 by fastening fasteners to the hanging pieces 32 of the anti-floating member 30 by passing them through the upright pieces 26.

[0041] As shown in FIG. 4(a), these hanging pieces 32, 32 are generally flat plates arranged with their thickness direction in the second direction. These hanging pieces 32, 32 are arranged along the inner sides of the upright pieces 26, 26 of the frames 20, 20 on both sides in the second direction. The anti-floating member 30 is fixed to the frames 20, 20 by fasteners that penetrate the hanging pieces 32, 32 from the outer sides of the upright pieces 26, 26 in the second direction. The receiving recess 19 of the end protection member 16 described above is designed to be able to receive the shank of the fastener. These hanging pieces 32, 32 are arranged so that their lower ends are close to the lower end protrusions of the end protection members 16, 16. These hanging pieces 32, 32 are provided across the entire first direction of the main body of the anti-floating member 30. The dimensions of these hanging pieces 32, 32 and the main body of the anti-floating member 30 along the first direction may be set to appropriate dimensions from the perspective of preventing the facility equipment mounting panel 10 from floating up, reducing the weight, etc.

[0042] As shown in FIG. 6(b), this anti-floating member 30 is provided with abutment pieces 31 that abut against the end faces 16a, 16a in the first direction of the end protection members 16, 16 on both sides in the second direction. With this configuration, the abutment pieces 31 of the anti-floating member 30 can prevent the equipment mounting panel 10 from moving in the first direction. In other words, the anti-floating member 30 is provided to prevent the end portions of the equipment mounting panel 10 in the first direction from floating up. As shown in FIG. 3, a pair of anti-floating members 30, 30 is provided to prevent both end portions of the equipment mounting panel 10 in the first direction from floating up. The equipment mounting panel 10 is fixed to the frame 20 via this pair of anti-floating members 30, 30. The end protection members 16, 16 on both sides in the second direction are attached to the panel main body 13 so that the end faces 14 in the first direction of the panel main body 13 are positioned further outward in the first direction than the abutting pieces 31. With this configuration, movement in the first direction can be prevented by the abutting pieces 31, while the end faces 14, 14 of the panel main bodies 13, 13 of adjacent facility equipment mounting panels 10, 10 in the first direction can abut against each other.

[0043] In other words, the length dimension of the panel main body 13 in the first direction is greater than the length dimension of the end protection members 16 in the same direction. Also, the end faces 14, 14 on both sides in the first direction of the panel main body 13 are positioned outward in the first direction than the end faces 16a, 16a, 16a, 16a on both sides in the first direction of the end protection members 16, 16. The dimension in the first direction from the end faces 16a, 16a, 16a, 16a of the end protection members 16, 16 to the end faces 14, 14 of the panel main body 13 may be slightly greater than the thickness dimension of the abutment piece 31. The abutment piece 31 is provided to hang down from the outer edge of the main body of the anti-floating member 30 in the first direction. The abutment piece 31 is generally flat and disposed so that its thickness direction is the first direction. The abutment piece 31 is provided over substantially the entire main body of the anti-floating member 30 in the second direction. The abutment piece 31 is disposed so that its lower end is close to the upper surface of the panel main body 13. Each end of the abutment piece 31 in the second direction abuts against each end surface 16a, 16a of the end protection members 16, 16. In the illustrated example, each end of the abutment piece 31 in the second direction abuts against each end surface 16a, 16a of the inner protrusion piece 16g, upper end protrusion piece 16f, extended side piece portion 16e, and upper piece portion 16b of the end protection members 16, 16 (see also FIG. 5 ). The anti-floating member 30 may be formed from an appropriate metallic material. The anti-floating member 30 is not limited to the above-described configuration, and may have various other configurations.

[0044] 3 to 5, the panel device 1 is provided with a connecting member 37 that is arranged so as to span between a pair of frames 20, 20 on both sides in the second direction, and each end in the second direction is fixed to each of the pair of frames 20, 20. This connecting member 37 is arranged so as to be located above the above-mentioned anti-lift member 30. With this configuration, the pair of frames 20, 20 can be more firmly connected by the anti-lift member 30 and the connecting member 37, and also displacement of each frame 20, 20 in a direction rotating around an axis along the first direction can be suppressed. Connecting member 37 is elongated in the second direction. The lower surface of each end portion in the second direction of connecting member 37's main body portion, which is substantially rectangular and flat in plan view, abuts against the upper surface of the upper end piece portion of suspended parts 21, 21 of each frame 20, 20.

[0045] Each end of the connecting member 37 in the second direction is provided with a hanging piece 39, which hangs down outside the fixed piece portion 22, of each frame 20, in the second direction. The hanging pieces 39 are generally flat plates with their thickness direction aligned with the second direction. The hanging pieces 39 are arranged along the outer surfaces of the fixed piece portions 22, of each frame 20, in the second direction. Fasteners passing through the hanging pieces 39 are fastened to the fixed piece portions 22, of each frame 20, thereby fixing the connecting member 37 to the frames 20,. This connecting member 37 has a restricting piece 38 provided to hang down from one side edge in the first direction of its main body. This restricting piece 38 is provided over substantially the entire second direction of the main body so that a space for receiving the upper ends of suspended parts 21 is formed between each end in the second direction of the restricting piece 38 and the hanging pieces 39 on both sides. The tip surfaces of the upper end pieces of each frame 20 are adjacent to each end in the second direction of this restricting piece 38. This connecting member 37 may be formed from an appropriate metallic material. Note that a configuration without such a connecting member 37 is also possible.

[0046] 8(a) and 8(b), the panel device 1 includes a connecting member 33 arranged to bridge the gap formed between the rising pieces 26, 26 when the mounting pieces 27, 27 of the frames 20, 20 adjacent in the first direction are in contact with each other. The connecting member 33 is fixed to each of the rising pieces 26, 26 with fasteners. With this configuration, when the mounting pieces 27, 27 of the frames 20, 20 adjacent in the first direction are in contact with each other, the rising pieces 26, 26 of the frames 20, 20 adjacent in the first direction can be connected to each other by the connecting member 33.

[0047] As shown in FIGS. 7( a) and 7(b), the connecting member 33 is disposed between the end surface of the second-direction end 12 of the equipment mounting panel 10 and the rising piece 26 of the frame 20 and includes a fixing piece 34 fixed to the rising piece 26. The connecting member 33 includes a contact piece 35 that protrudes in the second direction from the upper end of the fixing piece 34 and contacts the upper surface of the equipment mounting panel 10. With this configuration, the contact piece 35 of the connecting member 33 fixed to the rising piece 26 can prevent the equipment mounting panel 10 from lifting up. In other words, the connecting member 33 can combine the function of connecting the frames 20, 20 adjacent in the first direction with the function of preventing the equipment mounting panel 10 from lifting up, thereby reducing the number of parts. Because the connecting member 33 prevents the equipment mounting panel 10 from lifting up, workability can be improved when installing equipment 8 or drilling holes after the equipment mounting panel 10 is installed.

[0048] The connecting members 33 are arranged so as to be positioned at the connection portions of the frames 20, 20 adjacent in the first direction on both sides in the second direction. That is, in the illustrated example, the anti-lift members 30, 30 prevent each end of the equipment mounting panel 10 in the first direction from lifting up, and the connecting members 33, 33 on both sides in the second direction prevent the central portion of the equipment mounting panel 10 in the first direction from lifting up (see FIG. 3). The connecting members 33, 33 arranged on both sides in the second direction have the same configuration, so an example of a specific configuration will be described below using one of the connecting members 33 as an example. The fixing piece 34 of the connecting member 33 is generally flat, with its thickness in the second direction. The fixing piece 34 is arranged along the inside of the rising piece 26 of the frame 20 in the second direction, and is fixed to the rising piece 26 by fastening a fastener that passes through the fixing piece 34 from the outside of the rising piece 26 in the second direction (see also FIG. 8(b)). The receiving recess 19 of the end protection member 16 is arranged so that the shaft of the fastener can be received. The fixing piece 34 is arranged so that its lower end is close to the lower end protrusion of the end protection member 16.

[0049] The abutting piece 35 of the connecting member 33 is provided so as to protrude inward in the second direction from the upper end of the fixing piece 34. The abutting piece 35 is generally flat with its thickness extending vertically. The abutting piece 35 abuts against the upper surface of the edge protection member 16 that constitutes the upper surface of the edge 12 of the equipment mounting panel 10. With this configuration, the abutting piece 35 abuts against the edge protection member 16 rather than the panel main body 13, thereby preventing damage to the panel main body 13 even when the panel main body 13 is weak. The dimension of the abutting piece 35 along the second direction may be appropriately determined from the perspectives of preventing the edge 12 of the equipment mounting panel 10 from lifting up, achieving weight reduction, etc. The abutting piece 35 is provided across the entire fixing piece 34 in the first direction. The dimension of this connecting member 33 along the first direction may be an appropriate dimension so that the fixing piece portion 34 can be fixed to the upright piece portions 26, 26 adjacent in the first direction, and so that the abutting piece portion 35 can prevent the end portion 12 of the equipment mounting panel 10 from lifting up. This connecting member 33 may be made of an appropriate metallic material. The connecting member 33 is not limited to the configuration described above, and may have various other configurations.

[0050] 3 and 8, the panel device 1 includes temporary connection members 36 that temporarily connect the frames 20, 20 adjacent to each other in the first direction. With this configuration, the frames 20, 20 adjacent to each other in the first direction can be connected to each other by the above-described connection members 33 while they are temporarily connected to each other by the temporary connection members 36. 8, temporary connection member 36 is attached so as to engage with each of suspended parts 21, 21 of frames 20, 20 adjacent in the first direction. Temporary connection member 36 includes inner part 36a arranged along the inside in the second direction of fixing piece parts 22, 22 of suspended parts 21, 21, and outer part 36b arranged along the outside in the second direction of fixing piece parts 22, 22.

[0051] As shown in Figure 5, the inner portion 36a is shaped like a channel steel that opens sideways so as to fit along the inner surface of the suspended portion 21, which is shaped like a channel steel that opens sideways by the upper end piece portion, the fixing piece portion 22 and the hooked piece portion 23. As shown in Figure 8(a), the outer portion 36b is arranged so as to be close to the inner portion 36a as it moves from the center in the first direction of the temporary connecting member 36 toward the outside in the first direction, and is configured so that a bending portion is provided at the outer end portion in the first direction that bends toward the outside in the second direction. This temporary connecting member 36 may be attached by inserting both first direction side end portions of inner portion 36a into the inside of suspended portion 21 of frames 20, 20 adjacent in the first direction. At this time, outer portions 36b on both sides in the first direction may be elastically deformed to bring these into elastic contact with the second direction outer surfaces of fixing piece portions 22, 22. This temporary connecting member 36 may be formed from a metal-based material or a hard synthetic resin-based material. Note that a configuration without such temporary connecting member 36 may also be used.

[0052] The panel device 1 includes the equipment mounting panel 10 adjacent to the ceiling panel 9 on the outside in the first direction, and end faces 11, 29a, 29a of the first-direction ends of the extension pieces 29, 29 on both sides in the second direction, and is equipped with an end cover 40 that covers the space between these extension pieces 29, 29 on both sides in the second direction. With this configuration, the end cover 40 can prevent the under-the-ceiling side of the ceiling panel 9 adjacent to the equipment mounting panel 10 on the outside in the first direction from being seen through the space between the extension pieces 29, 29 on both sides in the second direction. As shown in FIGS. 9 and 10 , the edge cover 40 is provided across the upper surfaces of the edge protection members 16, 16 at the first-direction ends of the equipment mounting panel 10, and each second-direction end is fixed to the frames 20, 20. This edge cover 40 is provided instead of the anti-floating member 30 at the ceiling panel 9-side end of the equipment mounting panel 10 adjacent to the ceiling panel 9 on the outer side in the first direction. That is, this edge cover 40 prevents the ceiling panel 9-side end (outside in the first direction) of the equipment mounting panel 10 from floating up, and also functions as an anti-floating member connecting a pair of frames 20, 20 on both sides in the second direction. This edge cover 40 may be provided at the ceiling panel 9-side end of the equipment mounting panel 10 located on both outer sides in the first direction, adjacent to the outer side in the first direction, of the equipment mounting panels 10 that are arranged in series and abutted against each other in the first direction.

[0053] Each end of the end cover 40 in the second direction is provided with hanging pieces 41, 41 that are generally similar to the hanging pieces 32, 32 of the anti-floating member 30. These hanging pieces 41, 41 are arranged along the inside in the second direction of the standing piece portions 26, 26 of the frames 20, 20 on both sides in the second direction. The end cover 40 is fixed to the frames 20, 20 by fasteners that pass through the hanging pieces 41, 41 from the outside of the standing piece portions 26, 26 in the second direction and fasten them. The end cover 40 includes a cover body 42 that hangs down from the outer edge in the first direction of the portion spanning the upper surface of the end protection members 16. The cover body 42 is provided to cover the end face 11 of the equipment mounting panel 10, the end faces 29a of the extension pieces 29, and the space between the extension pieces 29, as well as the end faces of the mounting pieces 27 and the rising pieces 26 in the first direction. The cover body 42 is arranged to abut against the end face 11 of the equipment mounting panel 10, the end faces 29a of the extension pieces 29, and the end faces of the mounting pieces 27 and the rising pieces 26. The end cover 40 may be formed from an appropriate metallic material. The end cover 40 is not limited to the above-described configuration and may have various other configurations. It is also possible to configure the equipment without the end cover 40.

[0054] 9 and 10 , the panel device 1 includes a cover 43 arranged to cover the gap between the equipment mounting panel 10 and the joist 7, which is arranged opposite to the equipment mounting panel 10 in the first direction and forms a ceiling substrate that is long in the second direction. With this configuration, even if a gap is formed between the end of the equipment mounting panel 10 in the first direction and the opposing ceiling panel 9 or wall, this gap can be covered with the cover 43, allowing the outside of the equipment mounting panel 10 in the first direction to look good. This cover 43 may be provided on the end of the joist 7 adjacent to the outside of the equipment mounting panel 10, 10 located on both sides in the first direction among multiple equipment mounting panels 10 arranged in series and abutting each other in the first direction. The cover 43 includes a bottom plate portion 45 arranged to cover the lower ends of the extension pieces 29, 29 on both sides in the second direction and the space between them. The cover 43 includes side plate portions 46, 46 that rise from both second direction edge portions of the bottom plate portion 45 and are arranged along the second direction outer sides of the extension pieces 29, 29 on both sides in the second direction. With this configuration, the cover 43 can cover the first direction outer side of the facility equipment mounting panel 10, including the first direction ends of the extension pieces 29, 29 of the frames 20, 20 that hold the second direction end portions 12, 12 of the facility equipment mounting panel 10.

[0055] The bottom plate portion 45 and the side plate portions 46, 46 constitute a cover body 44 that covers the gap between the joist 7 and the equipment mounting panel 10. As shown in Figure 11(a) , ceiling panels 9, 9 are arranged adjacent to both sides of this cover body 44 in the second direction, and ceiling panels 9, 9 are arranged adjacent to the joist 7 side that is on the outside of this cover body 44 in the first direction. The bottom plate portion 45 has a generally rectangular flat plate shape in plan view, and is arranged to cover the underside of the edge of the equipment mounting panel 10 facing the siding 7 and the lower ends of the extension pieces 29, 29 facing the siding 7 from the side of the siding 7 facing the cover body 44, as shown in FIGS. 11(a) and 11(b). The bottom plate portion 45 is arranged so that its upper surface is adjacent to the lower ends of the extension pieces 29, 29 facing the siding 7 and the lower end of the cover body 42 of the end surface cover 40. The dimension of the bottom plate portion 45 along the first direction may be appropriately adjusted to fit a predetermined allowable gap between the siding 7 and the equipment mounting panel 10. Furthermore, the portion of the cover body 44 on the inside in the first direction (the equipment mounting panel 10 side) may be cuttable so that the dimension can be adjusted to fit the gap. The side plate portions 46, 46 are generally flat plates arranged with their thickness direction in the second direction. These side plate portions 46, 46 are provided across the entire bottom plate portion 45 in the first direction. These side plate portions 46, 46 are arranged so that their opposing inner surfaces in the second direction are close to the outer surfaces in the second direction of the extension pieces 29, 29 on both sides of the side plate portions 46, 46. The width dimension of these side plate portions 46, 46 in the up-down direction is smaller than the width dimension of the extension pieces 29, 29 in the up-down direction. In the illustrated example, the width dimension of these side plate portions 46, 46 is approximately half the width dimension of the extension pieces 29, 29, but is not limited to this example.

[0056] This cover 43 is provided with fixing portions 48, 48 that protrude from the cover main body 44 on both sides in the second direction and are fixed by fixing devices so as to fit along the opposing side surfaces of the joist 7 that face the cover main body 44. With this configuration, the cover 43 can be easily fixed to the joist 7 by passing fixing devices through the fixing portions 48, 48 that are exposed on both sides of the cover main body 44 in the second direction. Because these fixing portions 48, 48 are fixed along the opposing side surfaces of the joist 7, as shown in Figure 11(a), they are covered by the ceiling panels 9, 9 that are held by the joist 7, improving the appearance. These fixing portions 48, 48 are provided so as to protrude outward in the second direction from extension pieces that extend upward from the ends of the side plate portions 46, 46 on the joist 7 side. These fixing portions 48, 48 are generally flat plates whose thickness direction is the first direction. The vertical dimensions of these fixing portions 48, 48 may be any appropriate dimension so as not to interfere with the ceiling panel 9 fixed to the underside of the joist 7. In the illustrated example, the vertical dimensions of these fixing portions 48, 48 are shown as being generally the same as the vertical dimensions of the joist 7, but are not limited to this example.

[0057] These fixing portions 48, 48 are provided with hook portions 49, 49 that can be hooked onto the upper surface of the joist 7. With this configuration, the cover 43 can be easily fixed to the joist 7 with the hook portions 49, 49 on both sides in the second direction hooked onto the upper surface of the joist 7 and temporarily held in place. As shown in FIGS. 9(a) and 10(a), the hook portions 49, 49 on both sides in the second direction are provided so as to extend from the upper end of each fixing portion 48, 48 along the upper surface of the siding 7. The illustrated example shows an example in which each fixing portion 48, 48 has multiple (three in the illustrated example) hook portions 49, 49 spaced apart in the second direction. As shown in FIG. 11(b), these hook portions 49, 49 are bendable so as to fit along the inside of one side wall of the siding 7, which has an upward-facing opening. This configuration allows these hook portions 49, 49 to more firmly hold the cover 43 to the siding 7. The dimensions of these hook portions 49, 49 along the first direction before folding may be appropriately determined so as not to interfere with the other side wall of the siding 7 when folded. The hook portions 49, 49 are not limited to this bendable configuration and may be hook-shaped or have various other configurations. Furthermore, such hook portions 49, 49 may not be provided.

[0058] The cover body 44 is provided with abutment pieces 47 that are fitted along the underside of the siding 7. This configuration allows the siding 7 to be sandwiched between the hooks 49, 49 and the abutment pieces 47, thereby improving the temporary retention of the cover 43 relative to the siding 7. The abutment pieces 47 extend outward in the first direction from the upper end of an upright piece that rises from the end of the bottom plate 45 on the siding 7 side. The dimension of the abutment pieces 47 along the first direction may be equal to or smaller than the width of the siding 7 along the first direction. The cover 43 may be formed from an appropriate metallic material. The cover 43 is not limited to the configuration described above and may have various other configurations.

[0059] When installing the panel device 1 configured as described above, the hook pieces 4a of the hangers 4 of the hanging members 2 provided at the installation location of the equipment mounting panel 10 are inserted into the insertion holes 24 of the frame 20 to attach the frame 20 to the hangers 4 (see FIGS. 3 and 6(a)). At this time, adjacent frames 20, 20 in the first direction may be temporarily connected to each other using temporary connecting members 36 (see FIG. 8). Also, at this time, brace fixtures 5 may be attached to appropriate hangers 4 as needed. Then, the heights of the pair of frames 20, 20 provided on both sides of the second direction to extend in the first direction are adjusted. At this time, the height of the siding supports 6 may also be adjusted so that the height difference between the frame 20 and the siding supports 6 that hold the siding supports 7 that form the ceiling base of the ceiling panel 9 installed around the installation location of the equipment mounting panel 10 is an appropriate dimension.

[0060] Then, as shown in FIG. 6( a), the second-direction end portions 12, 12 of the equipment mounting panel 10 are placed on the mounting pieces 27, 27 of the frames 20, 20 on both sides in the second direction. At this time, the engaging recesses 18, 18 of the end portions 12, 12 of the equipment mounting panel 10 may be fitted with the engaging protrusions 28, 28 of the mounting pieces 27, 27. Furthermore, at this time, the equipment mounting panel 10 may be placed by aligning the end faces 11, 11 of the first-direction end portions of the equipment mounting panel 10 with markings provided in the longitudinal center of the frame 20. Alternatively, a predetermined number of equipment mounting panels 10 may be held by the frames 20, 20 on both sides in the second direction with the end faces 11, 11 of the first-direction end portions butted against each other. 6(a), (b), and 7(a), one end in the first direction of the first equipment mounting panel 10 is fixed to the frames 20, 20 by the anti-floating member 30. Then, each end 12, 12 in the second direction of the central portion of the equipment mounting panel 10 in the first direction is fixed to the frames 20, 20 by the connecting members 33, 33 on both sides in the second direction. Next, the other end in the first direction of the equipment mounting panel 10 is fixed to the frames 20, 20 by the anti-floating member 30.

[0061] Then, the end portion of a second equipment mounting panel 10 adjacent to the fixed equipment mounting panel 10 in the first direction, on the side opposite the fixed equipment mounting panel 10, is fixed to the frames 20, 20 by the anti-floating member 30. Then, similarly to the above, the second end portions 12, 12 of the center portion of the second equipment mounting panel 10 in the first direction are fixed to the frames 20, 20 by the connecting members 33, 33 on both sides in the second direction. Next, the end portion of the second equipment mounting panel 10 on the fixed equipment mounting panel 10 side is fixed to the frames 20, 20 by the anti-floating member 30. A predetermined number of equipment mounting panels 10 may be fixed to the frames 20, 20 in the same manner. Alternatively, as shown in FIGS. 3 and 7(b), a connecting member 37 may be fixed to the frames 20, 20 on both sides in the second direction so as to bridge the gap between the frames 20, 20 on both sides in the second direction.

[0062] Next, as shown in FIGS. 9 and 10 , the ends of the equipment mounting panels 10, 10 located on both outer sides in the first direction among the installed predetermined number of equipment mounting panels 10, adjacent to the ceiling panel 9 on the outer side in the first direction may be covered with end covers 40, 40. Furthermore, as shown in FIGS. 9 to 11 , the gap between the equipment mounting panels 10, 10 located on both outer sides in the first direction among the predetermined number of equipment mounting panels 10 and the siding 7 on the outer side in the first direction may be covered with covers 43, 43. After confirming the final height, the hangers 4 and the brace fixtures 5 may be fixed to the frame 20 with fasteners such as screws, and braces may be attached as needed. Furthermore, the ceiling panel 9 may be installed so as to surround the predetermined number of equipment mounting panels 10. Furthermore, appropriate equipment 8 may be attached to the equipment mounting panels 10. The above-described installation procedure for the panel device 1 is merely an example, and various other modifications are possible.

[0063] Next, an example of a facility equipment mounting panel 10A that can be provided in the panel device 1 in place of or in addition to the facility equipment mounting panel 10 described above will be described with reference to FIG. 12(a) and 12(b), the facility equipment mounting panel 10A of this example is provided with an equipment receiving groove 14A for receiving a facility equipment 8A that is long in a first direction. Such facility equipment 8A may be, for example, a wiring duct rail that holds a lighting fixture so that it can slide freely in the longitudinal direction and that can supply power to the lighting fixture, or various other facility equipment. The equipment receiving groove 14A opens downward in the center of the equipment mounting panel 10A in the second direction and extends over the entire panel. The equipment 8A to be inserted into the equipment receiving groove 14A may be fixed to the equipment mounting panel 10A with fasteners such as screws or other suitable fasteners. In this example, the equipment mounting panel 10A does not include the panel body 13 and the end protection members 16, 16 as described above, and is made of a metal plate. This configuration allows for weight reduction. In other words, the equipment receiving grooves 14A are formed by appropriate bending, press processing, etc.

[0064] Each end 12A, 12A in the second direction of this facility equipment mounting panel 10A may be provided with an engaging recess that engages with the engaging protrusions 28, 28 provided on the mounting portions 27, 27 of the frames 20, 20. In this example, each end 12A, 12A may be provided with a through-hole-shaped or notched-shaped engaging recess. In this example, fixing pieces 13A, 13A that are fixed to the frames 20, 20 are provided at each end 12A, 12A of the facility equipment mounting panel 10A in the second direction. These fixing pieces 13A, 13A are provided to protrude upward and are arranged along the inside of the upright pieces 26, 26 of the frames 20, 20 in the second direction. This facility equipment mounting panel 10A is fixed to the frames 20, 20 by fasteners that penetrate the fixing pieces 13A, 13A from the outside of the upright pieces 26, 26 in the second direction and are fastened to the frames 20, 20. In other words, in this example, the facility equipment mounting panel 10A is directly fixed to the frames 20, 20 by fasteners, instead of being indirectly fixed to the frames 20, 20 via the anti-floating members 30, the connecting members 33, etc., as in the above-described facility equipment mounting panel 10.

[0065] The facility equipment mounting panels 10, 10A provided in the panel device 1 are not limited to the configurations described above, and may have various other configurations. In the above example, the anti-floating members 30 and the connecting members 33 are provided to indirectly fix the equipment mounting panel 10 to the frames 20, 20, but one or both of these may be omitted. In this case, the ends 12, 12 of the equipment mounting panel 10 in the second direction may be directly fixed to the frames 20, 20 by fasteners. In the above example, the engaging protrusion 28 is provided on the mounting piece 27 of the frame 20, and the engaging recess 18 is provided on the equipment mounting panel 10, 10A, but these may be provided on the opposite sides. That is, the engaging recess may be provided on the mounting piece 27 of the frame 20, and the engaging protrusion may be provided on the equipment mounting panel 10, 10A. Furthermore, such an engaging protrusion or engaging recess may not be provided.

[0066] In the above example, the hanging portion 21 of the frame 20 is provided with the insertion hole 24 through which the hook piece 4a of the hanging member 2, which is a common part with the hanging member 2 that hangs the sill support 6, is inserted, but the present invention is not limited to this example. The frame 20 may also be suspended by a hanger 4 that is designed specifically for the frame 20. In the above example, the frame 20 is provided with a fixed piece portion 22, a hooked piece portion 23, a rising piece portion 26, a placing piece portion 27, and an extending piece 29, but it is also possible to have a configuration in which any of these is not provided.

[0067] In the above example, a cover 43 is provided to cover the gap between the siding 7 and the equipment mounting panel 10, but a configuration without such a cover 43 may also be used. In the above example, the equipment mounting panel 10 is installed so as to be positioned higher than the ceiling panel 9, but the equipment mounting panel 10 and the ceiling panel 9 may also be installed at approximately the same height. In the above example, a pair of frames 20, 20 on both sides in the second direction are shown holding panels 10, 10A for mounting equipment, but the panels are not limited to those for mounting equipment and may also be configured to hold other ceiling panels 9. stomach. The components constituting the panel device 1 are not limited to the above-described configuration, and various other modifications are possible. [Explanation of symbols]

[0068] 1 Panel device 10,10A Equipment Mounting Panel 12, 12A End (end in the second direction) 13 Panel body 15 End (end in the second direction) 16 End protection member 20 Frame (ceiling base) 21 Suspended part (upper part) 26 Standing piece (upper part) 27 Placement piece 33 Connecting member 34 Fixed piece 35 Contact piece 2 Hanging members

Claims

1. The ceiling structure includes a plurality of ceiling substrates that are long in a first direction and suspended from a hanging member at positions spaced apart in a second direction perpendicular to the first direction, and a panel whose end in the second direction is held by the ceiling substrate, The panel device is characterized in that the ceiling substructure has a mounting piece portion on which the second-direction end of the panel is placed, and when connected to an adjacent ceiling substructure in the first direction, the mounting piece portions abut each other and the mounting piece portions protrude in the first direction beyond the upper portions so that a gap is formed between the upper portions of the mounting piece portions.

2. In claim 1, the ceiling substrate is provided with a rising piece portion that is provided to rise from the placing piece portion and is arranged to face an end surface of the end portion of the panel in the second direction, A panel device characterized in that the above-mentioned base piece portions of the ceiling substructure adjacent to each other in a first direction are abutted against each other and are arranged to span the gap formed between the above-mentioned standing piece portions, and are provided with connecting members fixed to each of the standing piece portions by fasteners.

3. In claim 2, The panel device is characterized in that the connecting member is arranged between the end face of the panel in the second direction and the rising piece portion of the ceiling substructure, and comprises a fixed piece portion fixed to the rising piece portion, and an abutting piece portion protruding in the second direction from the upper end of the fixed piece portion and abutting against the upper surface of the panel.

4. In claim 3, the panel includes a panel body and an end protection member attached to the panel body so as to cover end surfaces and an upper surface of each end of the panel body in the second direction, The panel device is characterized in that the abutting piece abuts against the end protection member.

5. The panel device installation structure according to any one of claims 1 to 4, An installation structure for a panel device, characterized in that the connection portions between the ceiling substructures adjacent in the first direction and the butt portions between the panels held by these ceiling substructures adjacent in the first direction are installed so as to be in different positions in the first direction.

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