Installation method of ventilation device and replacement method of ventilation device

Abstract

To improve efficiency in related work of a ventilation device by not performing a ceiling finishing work during the related work of the ventilation device.SOLUTION: The whole lower end edge 11 of a ventilation device main body 5 faces downward with respect to a ceiling 3 and is not extended to a side part in parallel with the ceiling 3. When the ventilation device body 5 is embedded and fixed to an opening portion 7 of the ceiling 3, the lower end edge 11 does not protrude to a lower surface of a decorative sheet 9 attached to the lower surface of the ceiling 3. Accordingly, it becomes unnecessary to perform the work such as mounting the ventilation device body 5 after finishing of the ceiling 3 by attaching the decorative sheet 9 to the ceiling 3. Thus, the ventilation device main body 5 can be mounted before finishing the ceiling 3, and it becomes unnecessary to wait the finishing of the ceiling 3 to mount the ventilation device main body 5. As the work of mounting the ventilation device body 5 can be performed with the related works of the ventilation device 1 such as formation of the opening portion 7, arrangement of a duct 2 under the roof 4, wiring of the ventilation device body 5, and connection of the duct 2 and the ventilation device main body 5, work efficiency can be improved.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a method for installing or replacing a ventilation device that is embedded in an opening provided in a ceiling and ventilates a room.

Background Art

[0002] The installation work or replacement work of such a ventilation device had to be carried out after the ceiling finishing work such as pasting a decorative sheet on the ceiling. This is because the entire lower end edge of the ventilation device body extends laterally parallel to the ceiling and extends to the part of the decorative sheet outside the opening provided in the ceiling, and at the decorative sheet part on the lower surface of the ceiling, it is fixed to the ceiling at a plurality of locations of the extended part. Therefore, after the ceiling finishing, the installation of the ventilation device had to be carried out.

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Disclosure of the Invention

Problems to be Solved by the Invention

[0004] Then, after the duct work in the ceiling space, further, the above-mentioned ceiling finishing is carried out, and after that, the connection between the duct and the ventilation device is carried out, and further, the installation of the ventilation device has to be carried out. During the work process of the ventilation device, the installation work of the ventilation device has to be interrupted and the ceiling finishing work has to be inserted, which is time-consuming and the work efficiency is poor.

Means for Solving the Problems

[0005] In order to solve the above problems, in the method for installing a ventilation device according to the present invention, the ventilation device main body is connected to a duct installed in the ceiling space and communicating with the outside, and the entire lower edge of the ventilation device main body faces downward with respect to the ceiling and does not extend laterally parallel to the ceiling. The lower edge side surface of the ventilation device main body is fixed at a plurality of positions to the inner side surface of the opening provided in the ceiling, and the ventilation device main body is embedded in the opening and the ventilation device main body is attached in this way.

[0006] Further, in the method for replacing a ventilation device according to the present invention, an old ventilation device main body installed in the ceiling space and connected to a duct installed in the ceiling space and communicating with the outside, and embedded in the opening provided in the ceiling for performing indoor ventilation. For the old ventilation device main body, at the lower edge of the old ventilation device main body, the fixing of the extending portion extending outward in a direction parallel to the ceiling to the lower surface of the ceiling is released, the connection of the old ventilation device main body from the duct is disconnected, and the old ventilation device main body is removed. A new ventilation device main body is connected to the duct, and the entire lower edge of the new ventilation device main body faces downward with respect to the ceiling and does not extend laterally parallel to the ceiling. The lower edge side surface of the new ventilation device main body is fixed at a plurality of positions to the inner side surface of the opening, and the new ventilation device main body is attached to the opening where the old ventilation device main body was attached in this way.

Advantages of the Invention

[0007] Thereby, since the lower edge side surface of the ventilation device main body is fixed to the inner side surface of the opening, the lower edge of the ventilation device does not protrude from the opening of the ceiling, and after attaching the ventilation device to the ceiling opening or after replacing the ventilation device, the ceiling finish can be performed. Furthermore, the installation of the duct in the ceiling space, the attachment of the ventilation device, and the connection between the duct and the ventilation device can be executed in the same work process of the ventilation device. And it is not necessary to insert the ceiling finishing work during these work processes, improving the work efficiency.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Explanation of reference numerals

[0009] 1... Ventilation device 2... Duct 3... Ceiling 4... Ceiling space 5... New ventilation device body 6... Old ventilation device body 7... Opening 8... Frame body 9... Decorative sheet 11... Lower edge 12... Spacer 13... Long hole 15... Cover part 16... Adapter 17... Extension part 18... Screw

Embodiments for carrying out the invention

[0010] (1) Ventilation device 1 Fig. 1 shows the side cross-sectional view of the new ventilation device body 5 of the whole ventilation device 1 (ventilation fan) of the present invention. A duct 2 is installed in the ceiling space 4 above the horizontal and flat ceiling 3 and communicates with the outside. The adapter 16 of the ventilation device bodies 5 and 6 is connected to the duct 2.

[0011] In this connection, the cylinder of the adapter 16 is fitted into the cylinder of the duct 2, and an adhesive tape or the like is wound around this connection part. The adapter 16 is shown elongated in the left part of the ventilation device bodies 5 and 6 in Fig. 1 and is plate-shaped. After the adapter 16 is attached to the frame body 8 and the ceiling 3, the ventilation device bodies 5 and 6 slide from below and are attached to and integrated with the adapter 16, or also slide downward and are removed from the adapter 16 and separated.

[0012] A decorative sheet 9 is attached to the lower surface of the ceiling 3, and the ceiling 3 is finished. The new ventilation device body 5 and the old ventilation device body 6 (ventilation device bodies 5 and 6) are also installed in the ceiling space 4 and are connected to or removed from the duct 2 via this adapter 16.

[0013] The ventilation device bodies 5 and 6 are embedded in the opening 7 provided in the ceiling 3 to perform indoor ventilation. A frame body 8 is horizontally provided in the ceiling space 4, and the ceiling 3 is fixed to and supported by the lower surface. The ceiling 3 and the frame body 8 may be integrated, or the frame body 8 may be omitted and the frame body 8 may be included in the ceiling 3. The frame body 8 has the entire periphery or a part of the periphery of the opening 7, the vicinity of the opening 7, and the other ceiling 3 other than the opening 7 joined and fixed to the lower surface for support.

[0014] The end of this frame body 8 is fixed to an indoor wall, column, etc., or is connected to a suspension device at a plurality of locations of the frame body 8, and this suspension device is fixed to the lower surface of the structural body above the ceiling space 4, the lower surface of the roof, etc., and the ceiling 3 is suspended and fixed and supported. The ceiling 3 is plate-shaped and spreads over the entire interior, and the frame body 8 has a square or rectangular cross-section such as a rectangular shape and is long in a rod shape as a whole.

[0015] The entire lower end edge 11... of the lower end of the casing or frame of the new ventilation device body 5 (old ventilation device body 6) is made of resin, metal, etc., is downward and perpendicular to the surface of the ceiling 3, and does not extend laterally parallel to the ceiling 3. This entire lower end edge 11 is greater than or approximately the same height as the thicknesses of the ceiling 3 and the frame body 8.

[0016] This entire lower end edge 11 is rectangular, and the opening 7 is also rectangular. The horizontal vertical and horizontal dimensions of the entire lower end edge 11... are approximately the same as or slightly smaller than the horizontal vertical and horizontal dimensions of the opening 7. Therefore, the ventilation device body 5 (6) is inserted and embedded in the opening 7, and the ventilation device body 5 (6) is attached and fixed. Note that the old ventilation device body 6 is removed from the opening 7, and the new ventilation device body 5 is attached and fixed to the opening 7 where the old ventilation device body 6 was attached.

[0017] The lower edges 11... of the ventilation device body 5(6) are all horizontal and straight. Also, both the ceiling 3 and the opening 7 are horizontal and straight. As a result, when the lower edges 11... slightly enter the opening 7, a part of the lower edges 11... does not protrude or pop out below the opening 7, and the ventilation device body 5(6) can be beautifully installed.

[0018] Between the inner surface of the opening 7 and all the lower edges 11... of the ventilation device body 5(6), plate-shaped spacers 12... are inserted, preventing the gap between the inner surface of the opening 7 and all the lower edges 11... of the ventilation device body 5(6) from being blocked and air from escaping.

[0019] These spacers 12... are selected to be a single sheet, multiple sheets, or with an appropriate thickness so that the gap is completely blocked. These spacers 12... are made of hard resin, soft resin, metal, ceramic, rubber, etc., blocking the air permeability between the room and the ceiling space 4, maintaining the adhesion between the ceiling 3 and the ventilation device body 5, and maintaining airtightness.

[0020] Figure 2 shows the lower part of the ventilation device bodies 5 and 6. A plurality of vertically extending long holes 13... are formed at predetermined intervals in the lower edges 11... of the ventilation device body 5(6). Screws 18... are inserted through the long holes 13..., further penetrating the spacers 12, and the screws 18... are tightened to be fixed to the side surface of the frame body 8 on the inner surface of the opening 7.

[0021] The thread diameter of the screws 18... is larger than the width of the long holes 13..., and the ventilation device body 5(6) is fixed to the ceiling 3 by the screws 18.... As a result, the ventilation device body 5(6) is embedded and fixed in the opening 7 provided in the ceiling 3, and ventilation in the room is performed. In Figure 2, the screws 18... are fastened in the middle rather than at the ends of the long holes 13..., but they may also be fastened at the upper edge ends of the long holes 13....

[0022] This long hole 13... enables the mounting position of the lower edge 11 side surface of the ventilation device main body 5(6) on the side surface of the frame body 8 to be adjusted vertically. Accordingly, the connection direction / connection angle of the ventilation device main body 5(6) to the duct 2 can be adjusted, and air leakage during ventilation can be eliminated.

[0023] Figure 3 shows a side cross-sectional view of the old ventilation device main body 6 of the entire ventilation device 1 (ventilation fan). The lower edge 11 of the old ventilation device main body 6 had the same shape as the lower edge 11 of the new ventilation device main body 5, but usually has a different shape. In this case, the lower edge 11... of the old ventilation device main body 6 extends downward in the vertical direction and then is bent outward in a direction parallel to the ceiling 3, and further extends outward to form an extension portion 17.

[0024] A plurality of circular holes are formed in this extension portion 17, and screws 18 are inserted through these circular holes... and fixed to the lower surface of the ceiling 3 and the lower surface of the frame body 8 outside the opening 7. Then, these screws 18 are loosened and removed, the fixing of the extension portion 17 to the lower surface of the frame body 8 and the lower surface of the ceiling 3 is released, and the old ventilation device main body 6 is removed.

[0025] Below Figures 1 and 3, a covering portion 15 is shown. The covering portion 15 is detachably attached to the lower surface of the ventilation device main bodies 5 and 6 in the opening 7. This covering portion 15 is larger than the opening 7, covers the entire opening 7, and has air permeability such as a mesh shape.

[0026] There are various ways to attach this covering portion 15, such as screws, springs, magnets, etc. The ventilation device main bodies 5 and 6 are covered by this covering portion 15. The covering portion 15 may be attached to the lower surface of the ventilation device main bodies 5 and 6, or may be attached to the ceiling 3 around the opening 7.

[0027] The ventilation device main bodies 5 and 6 have blower blades or fans for ventilation and a drive source such as a motor for rotating / driving these blower blades or fans. When these blower blades or fans are rotated by the drive source, the air in the room below the ventilation device main bodies 5 and 6 is sucked in and exhausted from the duct 2 to the outside, thereby ventilating the air in the room.

[0028] (2) Method for installing the ventilation device 1 (new ventilation device main body 5) and method for replacing the ventilation device 1 (ventilation device main bodies 5 and 6) The method for installing the ventilation device 1 (new ventilation device main body 5) is as follows. (A) First, an opening 7 is formed in the ceiling 3, the duct 2 is arranged in the ceiling space 4, the wiring to the new ventilation device main body 5 is connected, an adapter 16 is fixed to the frame 8 of this opening 7 and connected to the duct 2, the new ventilation device main body 5 is slid onto and combined with this adapter 16, the new ventilation device main body 5 is fitted and embedded, spacers 12... are interposed, and the lower end edges 11... are screwed 18... to be fixed, and the ventilation device main body 5 is fixed and installed in the opening 7. Further, a decorative sheet 9 is pasted on the lower surface of the ceiling 3 or the like to finish the lower surface of the ceiling 3.

[0029] Finally, the covering part 15 is attached to the opening 7 of the ceiling 3 to cover the opening 7. In this way, after the installation work of the ventilation device main body 5 is completed, the finishing work of the ceiling 3 can be carried out, and it is not necessary to insert the finishing work of the ceiling 3 during the work process of the installation work of the ventilation device main body 5, improving the work efficiency. Note that the attachment of the covering part 15 is a simple operation, so it can be carried out by the finisher of the ceiling 3 rather than the operator of the ventilation device 1.

[0030] Here, if the lower end edge of the ventilation device main body 6 is bent and extended to contact the lower surface of the ceiling 3 under the decorative sheet 9 of the ceiling 3 like the old ventilation device main body 6, it is inevitable that the finishing work of the ceiling 3 will occur during the work process of the installation work of the ventilation device main body 5, resulting in poor work efficiency. In the ventilation device installation method of (A), such inconveniences are eliminated.

[0031] The mounting method of the ventilation device 1 (ventilation device main body 5) can also be as follows. (B) First, an opening 7 is formed in the ceiling 3, and the duct 2 is arranged in the ceiling space 4. Next, a decorative sheet 9 is pasted on the lower surface of the ceiling 3 or the like to finish the lower surface of the ceiling 3. Further, wiring to the ventilation device main body 5 is connected, an adapter 16 is fixed to the frame 8 of the opening 7 and connected to the duct 2, and a new ventilation device main body 5 is slid and joined to the adapter 16. The new ventilation device main body 5 is fitted and embedded, spacers 12... are interposed, and the lower end edges 11... are screwed 18... to fix the ventilation device main body 5 in the opening 7 for mounting.

[0032] Finally, the covering portion 15 is attached to the opening 7 of the ceiling 3 to cover the opening 7. Thus, during the mounting operation of the ventilation device main body 5, the finishing operation of the ceiling 3 may be performed. Although the working efficiency of this new ventilation device mounting method in (B) is lower than that of the method in (A), it can be said that the fact that either (A) or (B) can be appropriately "selected" according to the situation is excellent. In the case of the old ventilation device main body 6 whose lower end edge is bent and extended to abut against the lower surface of the ceiling 3, such a "selection" is not possible.

[0033] As described above, the mounting method of the ventilation device 1 in (A) and the mounting method of the ventilation device 1 in (B) can be selected according to the working situation or the on-site situation. The working situation or the on-site situation refers to the schedule of the worker specialized in the ventilation device 1, the procurement of parts of the ventilation device 1, the schedule of the worker specialized in the decorative sheet 9 of the ceiling 3, the procurement of the material of the decorative sheet 9, and the like.

[0034] The replacement method of the ventilation device 1 (ventilation device main bodies 5 and 6) is as follows. (C) First, the covering part 15 is removed from the ceiling 3, the screws at the lower edge of the old ventilation device main body 6 are loosened and removed, the adapter 16 and the old ventilation device main body 6 are separated, leaving the adapter 16, the old ventilation device main body 6 is pulled out from the opening 7, and the old ventilation device main body 6 is removed.

[0035] Next, the wiring to the new ventilation device main body 5 is connected, the new ventilation device main body 5 is combined with the adapter 16 in the opening 7, the new ventilation device main body 5 is fitted and embedded, spacers 12... are interposed, and the lower edge 11... is screwed 18... to be fixed, and the new ventilation device main body 5 is fixed and installed in the opening 7. Further, in some cases, the ceiling 3 is newly finished by, for example, replacing the decorative sheet 9 on the lower surface of the ceiling 3.

[0036] Finally, the covering part 15 is attached to the opening 7 of the ceiling 3, and the opening 7 is covered. In this way, after the replacement work of the ventilation device main bodies 5 and 6 is completed, the finishing work of the ceiling 3 can be carried out. There is no need to insert the finishing work of the ceiling 3 during the work process of the replacement work of the ventilation device main bodies 5 and 6, and the work efficiency is improved. Note that since the attachment of the covering part 15 is a simple operation, it can be carried out by the ceiling 3 finisher rather than the operator of the ventilation device 1.

[0037] Here, the finishing work of replacing the decorative sheet 9 on the ceiling 3 may be omitted. Also, the finishing work of replacing the decorative sheet 9 on the ceiling 3 may be carried out not only after the new ventilation device 5 is installed, but also after the old ventilation device 6 is removed or after the first covering part 15 is removed.

[0038] In this way, the presence or absence and timing of the finishing work of replacing the decorative sheet 9, that is, whether to carry it out after the new ventilation device 5 is installed, after the old ventilation device 6 is removed, or after the covering part 15 is removed, can be appropriately "selected" according to the progress of the work or the situation at the site, which itself is excellent. In the case of the old ventilation device main body 6 whose lower edge is bent and extended to abut against the lower surface of the ceiling 3, such a "selection" cannot be made.

[0039] In this embodiment, the adapter 16 may be excluded from the ventilation device main bodies 5 and 6, but it may also be included. The lower edge of the adapter 16 faces downward with respect to the ceiling 3 and does not extend laterally parallel to the ceiling 3. However, the lower edge of the adapter 16 may extend outward in a direction parallel to the ceiling 3, and may be fixed to or released from and removed from the lower surface of the ceiling 3 at this extension portion 17. Even in this case, it can be said that all the lower edges 11... of the new ventilation device main body 5 excluding the adapter 16 face downward with respect to the ceiling 3 and do not extend laterally parallel to the ceiling 3.

[0040] (3) Second Embodiment The duct 2 is bellows-shaped and may be stretchable, and can be pulled out to below the opening 7 of the ceiling 3. The new ventilation device main body 5 and the old ventilation device main body 6 (ventilation device main bodies 5 and 6) are connected to or removed from the duct 2 near the lower part of the opening 7, so that the ventilation device main bodies 5 and 6 can be installed or replaced. In this case, since the duct 2 is pullable, the adapter 16 can be omitted, and the adapter 16 is integrated with the ventilation device main bodies 5 and 6, and the integrated ventilation device main bodies 5 and 6 are installed or replaced integrally.

[0041] Here, pull the tip of the duct 2 near the opening 7, connect the new ventilation device main body 5 to the duct 2, and connect the electrical wiring. The corners of the upper edge of the new ventilation device main body 5 do not protrude. Push in the new ventilation device main body 5 while tilting it and push it in from the opening 7. Then, straighten this tilt horizontally, interpose the spacers 12... without gaps, and screw the entire lower edge 11... of the new ventilation device main body 5 to the inner surface of the opening 7 of the ceiling 3 to fix the new ventilation device main body 5 in the opening 7 without gaps.

[0042] When removing the old ventilation device body 6, loosen and remove the screws on the lower surface of the ceiling 3 around the opening 7. Next, remove the spacer 12… to create a gap between the old ventilation device body 6, the ceiling 3, and the frame body 8, and pull out the old ventilation device body 6 while tilting it, and take it out from the opening 7. Then, disconnect the connection of the old ventilation device body 6 to the duct 2 and cut the electrical wiring. Note that the screws on the lower surface of the ceiling 3 may penetrate up to the frame body 8 above the ceiling 3.

[0043] (4) Other Embodiments The present invention is not limited to the above embodiments and can be variously modified. For example, the above frame body 8 may be omitted or integrated with the above ceiling 3. In this case, only the ceiling 3 including the frame body 8 supports the ceiling 3 itself. In this case, the ceiling 3 may be thick, may have no change in thickness, may be thin, the ceiling 3 may be supported by an indoor wall, column, etc. at the periphery, or the ceiling 3 may be supported by a hanging member such as a hanging bracket.

[0044] The above spacer 12… may be omitted, and the ventilation device bodies 5, 6, and the adapter 16 may be directly fixed to the ceiling 3 and the frame body 8. In this case, the gap between the ventilation device bodies 5, 6 and the ceiling 3 and the frame body 8 is almost eliminated. The small gap between the ventilation device bodies 5, 6 and the ceiling 3 and the frame body 8 may be filled with putty, filler, adhesive, etc. Also, the portion connected to the duct 2 in the upper left of FIG. 1 does not protrude, and the ventilation device bodies 5, 6 can be fitted into and embedded in the opening 7 or pulled out and removed without tilting.

[0045] The adapter 16 may be partially or entirely omitted, and the joint surface between the adapter 16 and the ventilation device bodies 5, 6 may be other than a vertical straight line, such as diagonal, curved, or uneven. The covering portion 15 may be partially or entirely omitted.

[0046] The above-mentioned decorative sheet 9 may be omitted, and the lower surface of the ceiling 3 may be processed into a wood grain shape or other decorative sheet shape, or may be painted. Between the inner surface of the opening 7 of the ceiling 3, the side surfaces of the spacers 12..., the outer surface of the ventilation device body 5, etc., a filler such as putty may be applied and interposed to further enhance the airtightness.

[0047] The ventilation device bodies 5, 6, and the duct 2 may be in a cylindrical shape, an elliptical cylindrical shape, a prismatic shape, a frustum of a cone shape, a frustum of a pyramid shape, a cuboid shape, a cube shape, or a composite shape thereof. Accordingly, the opening 7 may be circular, elliptical, square, polygonal, etc. The frame body 8 may be in a quadrangular prism shape, or may be in a cylindrical shape, an elliptical cylindrical shape, a prismatic shape, a frustum of a cone shape, a frustum of a pyramid shape, a cuboid shape, a cube shape, or a composite shape thereof.

[0048] The connection between the duct 2 and the ventilation device bodies 5, 6 may be any connection method as long as it can be detachably connected, such as screwing, fitting, adsorption by magnetic force, etc. The lower edge 11... of the ventilation device bodies 5, 6 may not only be horizontal and linear, but may also have irregularities, may be inclined from the horizontal, or may be slightly exposed downward from the opening 7, as long as it does not hinder the attachment of the covering portion 15.

[0049] The lower edge 11... of the old ventilation device body 6 may be downward with respect to the ceiling 3 and may not extend laterally parallel to the ceiling 3, and may have the same shape as the lower edge 11... of the new ventilation device body 5. The lower edge of the long hole 13... may reach the lower edge 11... of the ventilation device bodies 5, 6 and may be in a shape such as a concave portion / notch instead of a hole.

[0050] Above the above-mentioned ceiling space 4, in addition to the roof, in a multi-story building such as a building, it becomes a structural body / upper ceiling formed by partitioning the floor of the upper floor and the ceiling space 4 of the lower floor. The ceiling space 4 may be absent, or the lower surface of the structural body may be the ceiling 3, the duct 2 may be wound around the lower surface of the structural body, and the ventilation device bodies 5, 6 may be attached to the lower surface of the structural body.

[0051] The screw and the long hole 13... are provided and fixed at predetermined intervals. Even so, it can be said that they are fixed over the entire circumference of the ventilation device main bodies 5 and 6 / at regular intervals. Additionally, bolts and nuts, screws, surface fasteners, wire fasteners, stitching, adhesives, adhesive tapes, hooks and loops, magnets, staples, buttons and buttonholes, strings that can be tied and untied, etc. can be used, or they can be omitted. The long hole 13... can also be a circular hole.

[0052] The above-mentioned frame body 8 is provided over the entire circumference of the opening 7, but it may be partially or entirely omitted, or the ceiling 3 itself may have the function of the frame body 8. The opening 7 may be square, circular, elliptical, polygonal, or other shapes. The shapes of the ventilation device main bodies 5 and 6 are close to a cube shape except for the irregularities, but they may be flat along the opening 7, or cylindrical, elliptical cylindrical, polygonal cylindrical, circular plate, elliptical plate, polygonal plate, or other shapes.

[0053] The ceiling 3 is planar and flat, but it may have irregularities, holes, or apertures. The duct 2 may be cylindrical, square cylindrical, polygonal cylindrical, elliptical cylindrical, or other shapes. In the above-mentioned room, there may or may not be doors, windows, ventilation openings, etc., and it may also be an open room connected to the outside.

[0054] Ventilation device 1, duct 2, ceiling 3, ceiling space 4, new ventilation device body 5, old ventilation device body 6, opening 7, frame body 8, decorative sheet 9, lower edge 11…, spacer 12…, long hole 13…, covering part 15, adapter 16, extending part 17, screw 18… may be singular, plural, or three or more. Also, part or all of each of these configurations, operations, actions, processes, or functions may be omitted, or they may be divided and separated, with the number increasing or decreasing. Their shapes can be arbitrarily changed, replaced with equivalent others, or two or more of them may be combined or integrated for dual use. In addition to the orientations shown in the figures, they may be used with their inclinations / orientations changed / reversed by 90 degrees, 0 degrees to 180 degrees, up and down, left and right, front and back, front and back, front and back, forward and backward. The relative magnitudes of their respective dimensions may be switched or the same, and part or all may be omitted. The shapes may be flat, curved, have holes, or have irregularities, and may be square, rectangular, square, triangular, circular, elliptical, polygonal, trapezoidal, semi-elliptical, parallelogram, rhombus, polygonal, triangular, trapezoidal, annular, semi-annular, star-shaped, fan-shaped, curved shape, cross-shaped, L-shaped, H-shaped, I-shaped, U-shaped, T-shaped, C-shaped, O-shaped, N-shaped, M-shaped, X-shaped, J-shaped, Y-shaped, E-shaped, F-shaped, S-shaped, V-shaped, or other planar shapes, curved surfaces, angular shapes, cuboid-shaped, polyhedron-shaped, cylinder, square cylinder, circular cylinder, elliptical cylinder, prism, semi-circular cylinder, semi-elliptical cylinder, semi-prism, frustum of a cone, frustum of a pyramid, sphere, oval, hemisphere, semi-oval, polyhedron, gourd-shaped, serrated, coil, string, plate, rod, block, or other three-dimensional shapes, or combinations of these three-dimensional shapes. They may also have angular stepped shapes, rounded stepped shapes, rounded irregular shapes, combinations of these shapes, stepped, reticulated, framed, sheet-like, mesh-like, blind-like, slit-like, with multiple holes, with holes in the center, etc., or combinations of these composite shapes, and part or all may be omitted. The materials may be made of metal, wood, bamboo, rigid urethane, soft urethane, soft resin, hard resin, foamed resin, resin, metal, glass, cotton, cloth, thread, fiber, rubber, paper, ceramic, carbon, clay, or sealed liquids or gases, or made of composites / mixtures / multilayer laminates of these. They may also be reticulated, transparent, or semi-transparent.The connection, fixation, adhesion, bonding, and joining between each other can be anything such as stitching, bolts and nuts, screws, surface fasteners, wire fasteners, stitching, adhesives, adhesive tapes, hooks and loops, magnets, staples, buttons and buttonholes, strings that can be tied and untied, etc., or they can be omitted.

[0055] (5) Effects of Other Inventions [1] A ventilation device mounting method, comprising connecting a ventilation device main body to a duct installed in the ceiling space and communicating with the outside, wherein the entire lower edge of the ventilation device main body faces downward with respect to the ceiling and does not extend laterally parallel to the ceiling, fixing the lower edge side surface of the ventilation device main body at a plurality of locations with respect to the inner side surface of the opening provided in the ceiling, and embedding the ventilation device main body in the opening to mount the ventilation device main body.

[0056] [2] The ventilation device mounting method according to claim 1, characterized in that the mounting position of the lower edge side surface of the ventilation device main body on the inner side surface of the opening can be adjusted vertically, and accordingly, the connection direction of the ventilation device main body to the duct can be adjusted. Thereby, the height of the ventilation device main body can be adjusted according to the height of the ceiling space.

[0057] [3] The ventilation device mounting method according to claim 2, characterized in that a covering portion having air permeability that covers the entire opening is detachably attached to the opening. Thereby, the ventilation device main body in the opening can be covered without impairing air permeability.

[0058] [4] The ventilation device mounting method according to claim 3, characterized in that after the ventilation device is mounted, the lower surface of the ceiling is finished, and then the covering portion is attached to the opening of the ceiling. Thereby, the ventilation device main body can be mounted before the ceiling finishing, and the operation of mounting the ventilation device main body can be combined with the ventilation device-related work.

[0059] [5]The ventilation device is installed after the lower surface of the ceiling is finished, and then the covering part is attached to the opening of the ceiling. The method for installing a ventilation device according to claim 3 is characterized in that. This allows the selection of the conventional working method as well.

[0060] [6]The method for installing a ventilation device according to claim 4 and the method for installing a ventilation device according to claim 5 are selected according to the progress of the work or the situation at the site. The method for installing a ventilation device is characterized in that. This allows the selection of a work process according to the progress of the work or the situation at the site, and the work process can be changed according to the progress of the work or the situation at the site.

[0061] [6-1]The ventilation device main body has a blower blade or a fan for ventilation and a drive source for driving these blower blades or fans. The method for installing a ventilation device according to claim 4 or 5 is characterized in that. This prevents the blower blade or fan and the drive source from hitting anything.

[0062] [7]An old ventilation device main body installed in the ceiling space and connected to a duct communicating with the outside. Regarding the old ventilation device main body installed in the ceiling space and embedded in the opening provided in the ceiling for indoor ventilation, at the lower edge of the old ventilation device main body, the fixing of the extension part extending outward in a direction parallel to the ceiling to the lower surface of the ceiling is released, the connection of the old ventilation device main body from the duct is disconnected, and the old ventilation device main body is removed. A new ventilation device main body is connected to the duct. The entire lower edge of the new ventilation device main body faces downward with respect to the ceiling and does not extend laterally parallel to the ceiling. The side surface of the lower edge of the new ventilation device main body is fixed to the inner surface of the opening at multiple locations, and the new ventilation device main body is attached to the opening where the old ventilation device main body was attached. The method for replacing a ventilation device is characterized in that.

[0063] [8] The mounting position on the inner surface of the opening on the lower edge side surface of the new ventilation device body is adjustable vertically, and accordingly, the connection direction of the new ventilation device body to the duct is adjustable. The ventilation device replacement method according to claim 7 is characterized in that. Thereby, the height of the ventilation device body can be adjusted according to the height of the ceiling space.

[0064] [9] The ventilation device replacement method according to claim 8 is characterized in that a covering part having air permeability that covers the entire opening is detachably attached to the opening. Thereby, the ventilation device body inside the opening can be covered without impairing air permeability.

[0065]

[10] The ventilation device replacement method according to claim 9 is characterized in that the covering part is removed, then the old ventilation device is removed, further the new ventilation device is attached, and then the covering part is attached to the opening in the ceiling. Thereby, the old ventilation device can be replaced with a new ventilation device.

[0066]

[11] The ventilation device replacement method according to claim 10 is characterized in that the finish of the lower surface of the ceiling is made after the new ventilation device is attached, after the old ventilation device is removed, or after the covering part is removed. Thereby, the finish of the ceiling can be selected after various operations, and it is possible to respond flexibly.

[0067]

[12] The ventilation device replacement method according to claim 11 is characterized in that whether to perform the finish of the lower surface of the ceiling after the new ventilation device is attached, after the old ventilation device is removed, or after the covering part is removed is selected according to the progress of the work or the situation at the site. Thereby, it is possible to select a work process according to the progress of the work or the situation at the site, and it is possible to change the work process according to the progress of the work or the situation at the site.

[0068] [12-1] The ventilation device replacement method according to claim 10, 11 or 12, characterized in that the old ventilation device body or the new ventilation device body has a blower blade or a fan for ventilation and a drive source for driving the blower blade or the fan. Thus, the blower blade or the fan and the drive source will not collide with anything.

Industrial Applicability

[0069] During the work related to the ventilation device, the ceiling finishing work is not inserted, and the work related to the ventilation device is made more efficient. The entire lower end edge 11… of the ventilation device body 5 faces downward with respect to the ceiling 3 and does not extend laterally parallel to the ceiling 3. When the ventilation device body 5 is embedded and fixed in the opening 7 of the ceiling 3, the lower end edge 11… does not protrude beyond the lower surface of the decorative sheet 9 attached to the lower surface of the ceiling 3.

[0070] Therefore, it is no longer necessary to perform operations such as installing the ventilation device body 5 after the finishing of the ceiling 3, such as attaching the decorative sheet 9 to the ceiling 3. Thus, the ventilation device body 5 can be installed before the finishing of the ceiling 3, and there is no need to wait until the finishing of the ceiling 3 to install the ventilation device body 5. The installation work of the ventilation device body 5 can be combined with the work related to the ventilation device 1, such as forming the opening 7, arranging the duct 2 in the ceiling space 4, wiring the ventilation device body 5, and connecting the duct 2 and the ventilation device body 5, improving the work efficiency.

Claims

1. A ventilation device body is connected to a duct installed in the ceiling space and communicating with the outdoors. The entire lower edge of the ventilation device body faces downward with respect to the ceiling and does not extend laterally parallel to the ceiling. Further, the entire lower edge does not protrude beyond the lower surface of the ceiling outside the entire periphery of the opening provided in the ceiling. The lower edge side surface of the ventilation device body is fixed at a plurality of locations to the inner side surface of the opening provided in the ceiling, and the ventilation device body is embedded in the opening to install the ventilation device body. A breathable covering portion that covers the entire opening and also covers the lower surface of the ceiling around the opening is detachably attached to the opening. After the ventilation device body is installed, the lower surface of the ceiling is finished, and then the covering portion can be attached to the opening of the ceiling, or after the lower surface of the ceiling is finished, the ventilation device body can be installed, and then the covering portion can be attached to the opening of the ceiling. A plurality of elongated holes extending in a direction perpendicular to the opening surface of the opening are provided at the lower edge of the ventilation device body. The ventilation device body is fixed to the inner side surface of the opening by fixing means through these elongated holes, whereby the ventilation device body is fixed within the opening. A method for installing a ventilation device is characterized by this.

2. A frame body is provided in the opening, and the attachment position of the lower edge side surface of the ventilation device body to the side surface of the frame body can be adjusted vertically. Accordingly, the connection direction of the ventilation device body to the duct can be adjusted. The method for installing a ventilation device according to Claim 1 is characterized by this.

3. An old ventilation device body that is installed in the ceiling space and connected to a duct communicating with the outdoors and is installed in the ceiling space. Regarding the old ventilation device body that is embedded in the opening provided in the ceiling and performs indoor ventilation, at the lower edge of the old ventilation device body, the fixing of the extended portion extending outward in a direction parallel to the ceiling to the lower surface of the ceiling is released, the connection of the old ventilation device body from the duct is disconnected, and the old ventilation device body is removed. Connect a new ventilation device body to the duct, and the entire lower edge of the new ventilation device body faces downward with respect to the ceiling and does not extend laterally parallel to the ceiling. Further, the entire lower edge does not protrude beyond the lower surface of the ceiling outside the periphery of the opening provided in the ceiling. Fix the side surface of the lower edge of the new ventilation device body to the inner surface of the opening at multiple locations, and attach the new ventilation device body to the opening where the old ventilation device body was attached. Cover the entire opening, and also cover the lower surface of the ceiling around the opening. A breathable covering part is detachably attached to the opening. After the new ventilation device body is attached, the lower surface of the ceiling is finished, and then the covering part is attached to the opening in the ceiling, or after the lower surface of the ceiling is finished, the new ventilation device body is attached, and then the covering part is attached to the opening in the ceiling. This can be selected. A plurality of long holes extending in a direction perpendicular to the opening surface of the opening are provided at the lower edge of the new ventilation device body. The new ventilation device body is fixed to the inner surface of the opening by fixing means through these long holes, whereby the new ventilation device body is fixed within the opening. A method for replacing a ventilation device is characterized by this.

4. A frame body is provided in the opening, and the attachment position of the side surface of the frame body on the side surface of the lower edge of the new ventilation device body can be adjusted vertically. Accordingly, the connection direction of the new ventilation device body to the duct can be adjusted. The method for replacing a ventilation device according to claim 3 is characterized by this.

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