JP2007239291A - Dome ceiling unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dome ceiling unit having a projection surface and a projector capable of easily constructing an accurate semi-spherical dome ceiling and easily constructing it even when it is used as a projection surface. <P>SOLUTION: This dome ceiling 8 is formed by arranging four skeletons 7 of generally cubic shape so that the recessed part side of each divided arcuate ceiling body 6 is positioned on the inside to form the generally semi-sphere. The skeletons support and fix the three apexes of a divided arcuate ceiling body 6 formed of the shapes radially divided into four parts from the crest part of a generally semi-sphere only on the projecting part side of the divided arcuate ceiling body 6. A projector 10 is installed at one end of an arm 9 positioned in the true bearing of the apexes of the dome ceiling 8. The other end of the arm is fixed to one of the skeletons 7 forming the dome ceiling 8. The dome ceiling unit is characterized in that it is used as a light projection surface 11 projected from the projector 10 in which a fluorescent substance is applied onto the inner surface of the dome ceiling 8. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a dome-type ceiling unit having a projection surface and a projection device on a dome ceiling formed by framing divided arc ceiling bodies together by a frame.

  When enjoying a planetarium at home or in a small-scale facility, the constellation is currently projected onto a generally used flat ceiling using a constellation projector. However, even if the constellation is projected on a flat ceiling and viewed, it is not realistic and you cannot experience the power of the original celestial body. In addition, with a commercially available constellation projector, there is a problem that the focus is not achieved at the edge of the flat ceiling. Therefore, a dome-shaped ceiling is necessary to enjoy a powerful constellation full of realism. As a prior art of such a dome-shaped ceiling unit, there is a method of constructing a dome-shaped roof 2 that covers the opening at the top of a cylindrical structure 1 constructed in advance as shown in FIG. In this construction method, split bodies 3 that are radially divided into 5 to 8 bodies are formed in advance from the center of the dome-shaped roof 2, and are sequentially supported by the support 4 provided directly below the center of the dome-shaped roof 2. The body 3 is constructed in a dome shape by the crane 5, the support work 4 is disassembled in a state where a space corresponding to one or two bodies 3 is left, and the disassembled support work 4 is divided into one or two parts. It is known that the body 3 is removed from the space corresponding to the body 3 and then 1 to 2 bodies 3 are installed in the space (for example, see Patent Document 1).

JP 2004-244923 A

  However, in the dome type ceiling constructed by the conventional dome type roof construction method described above, the construction is not only very large, but also in terms of time and budget, houses, residences, and small-scale facilities It is difficult to apply to. In addition, when the interior of the dome is simply constructed by plastering or the like, there is a possibility that the problem that they are peeled off occurs. Furthermore, when trying to use a dome-shaped roof as a projection surface for a planetarium, it is difficult to make a precise semi-spherical shape. In addition to construction, it will be difficult to realize in terms of time and budget.

  The present invention was made for the purpose of solving the various problems as described above, and can easily construct a highly accurate dome ceiling on a hemisphere, and when using them as a projection surface, An object of the present invention is to provide a dome-type ceiling unit equipped with a projection device that can be easily constructed.

  In order to achieve the above object, the dome-type ceiling unit according to claim 1 is characterized in that the three vertices of a divided arc ceiling body having a shape radially divided from the top of a substantially hemispherical shape are divided into four. Assembling the substantially cubic frame supported and fixed only on the convex side of the four side-by-side so that the concave side of each divided arc ceiling body is located inside to form a substantially hemispherical shape to form a dome ceiling, A projection device is provided at the other end of the arm that is fixed to one of the frames constituting the dome ceiling, and the fluorescent material is provided on the inner surface of the dome ceiling. A projection surface of light projected from the coated projection device is used.

  The dome type ceiling unit according to claim 2 is characterized in that the projection device is a constellation projector.

  The dome type ceiling unit according to claim 3 is characterized in that the projection device is a lighting device.

  The dome-shaped ceiling unit according to claim 1 is configured so that three vertices of a divided arc ceiling body having a shape obtained by radially dividing the substantially semicircular skeleton from the top of a substantially semicircular sphere into four parts. It is supported and fixed only on the convex side. Therefore, when they are transported by a transporting means such as a truck, each unit is not large, so that the transport becomes easy. In addition, the divided arc ceiling body can be protected from an impact during transportation by a frame that supports and fixes the divided arc ceiling body. In addition, the work can be performed without directly touching the divided arc ceiling body during carrying-in, carrying-out, and construction to a transportation means such as a truck. Furthermore, since the work can be performed without directly touching the projection surface, problems such as dirt, scratches and distortion of the projection surface provided inside the divided arc ceiling body do not occur at the end of the construction. Further, since the divided arc ceiling body is not directly fixed to the building frame, the divided arc ceiling body is not distorted or distorted at the end of construction. Furthermore, since there is a framework around, there is an advantage that it is easy to lay the ceiling heat insulating material. Moreover, since it can be constructed without applying strong stress to the divided arc ceiling body, it is possible to train the divided arc ceiling body during transportation.

  The dome type ceiling unit according to claim 2 uses a constellation projector as the projector according to claim 1. As a result, by projecting onto the projection surface provided inside the dome ceiling with the constellation projector, it is possible to easily enjoy a realistic and powerful astronomical appreciation. Furthermore, even when a constellation is projected using a commercially available constellation projector, a more realistic sensation and power can be enjoyed without causing the problem of being out of focus.

  A dome type ceiling unit according to a third aspect uses an illumination device for the projector according to the first aspect. As a result, the illumination efficiency can be improved as compared with ordinary illumination due to the synergistic effect of the reflected light from the projection surface provided inside the dome ceiling and the fluorescence emitted by the fluorescent material applied to the projection surface.

  The best embodiment of the dome type ceiling unit of the present invention will be described below with reference to the drawings. The dome-shaped ceiling unit I of this embodiment has a divided arc ceiling body 6 having a shape that is radially divided into four from the top of a substantially hemispherical shape, and the three arc apexes of the divided arc ceiling body 6 are the divided arc ceiling bodies. The frame 7 having a substantially cubic shape, which is supported and fixed only on the convex side of 6, and the frame 7 are assembled side by side so that the concave side of each divided arc ceiling body 6 is located on the inside to form a substantially hemispherical shape. The dome ceiling 8, the projection device 10 provided at the other end of the arm 9 fixed at one end to one of the frames 7 constituting the dome ceiling 8, which is located directly below the apex of the dome ceiling 8, the dome A projection surface 11 of light projected from the projection device 10 in which a fluorescent material is applied to the inner surface of the ceiling 8 is provided.

  The division | segmentation circular arc ceiling body 6 consists of a shape divided | segmented radially into four from the top part of a substantially semicircle. As shown in FIG. 3, the split arc ceiling body 6 is provided with a joint 12 that protrudes in a direction away from the convex side of the split arc ceiling body 6 over the entire length in the width direction from the top to the lower end. It has been. Further, the joint 12 is provided with a joint hole 13 for screwing the divided arcuate ceiling bodies 6 to each other at a predetermined position. Therefore, when joining each division | segmentation circular arc ceiling bodies 6, they can be joined by screwing the corresponding joining holes 13 mutually. Further, the joint portion 12 provided in the divided arc ceiling body 6 is provided with a coupling hole 14 for supporting and fixing to the frame 7 and screwing in the vicinity of the top portion and the lower end portion thereof.

  Moreover, when joining each said division | segmentation circular ceiling body, in order to maintain the airtight structure of the indoor space to which the said dome ceiling 8 was attached, as shown in FIG. Further, an elastic urethane or rubber-like airtight member 15a is provided. By doing so, when the divided arc ceiling bodies 6 are joined to each other so as to be substantially spherical and the dome ceiling 8 is formed, the airtightness of the indoor space can be ensured. Further, the lower end edge portion of the divided arc ceiling body 6 is provided with a jaw portion 16 protruding in a direction away from the divided arc ceiling body 6 as shown in FIG. The split arc ceiling body 6 is constructed on the frame 7 so that the jaw 16 abuts the lower end of the frame 7, and further around the dome ceiling 8 through the airtight member 15 b similar to the above. By contacting the ceiling finishing material 17 for finishing the ceiling, the airtightness of the indoor space is ensured.

  The divided arc ceiling body 6 is formed using, for example, FRP (Fiber Reinforced Plastics) in which a fiber reinforcing material such as glass cloth is impregnated with an epoxy resin. In addition, the resin used for forming the divided arc ceiling body 6 is not limited to the above-described one, and instead of the fiber reinforcing material, a resin filled with glass powder, silica, carbon, or the like, or fluorescent in advance. You may use what added the substance to resin. As for the method of forming the divided arc ceiling body 6, the method of impregnating the fiber reinforcing material with resin as described above is simple and preferable, but may be formed by injection molding.

  As shown in FIG. 3, the skeleton 7 is composed of a plurality of frames 18, and has a substantially cubic shape by combining the plurality of frames 18 by screwing or welding. The frame 18 constituting the skeleton 7 is formed of a metal such as aluminum or iron, for example, and has a shape bent at a substantially right angle from one end in the longitudinal direction to the entire width in the other end as shown in FIG. It is made. Further, the frame 18 is provided with a hole 19 for screwing with another frame 18 or another member in advance. Moreover, it is also possible to provide a new hole 19 as necessary at the construction site. As shown in FIG. 3, the frame 7 supports and fixes the three vertices of the divided arc ceiling body 6 only on the convex portion side of the divided arc ceiling body 6. Therefore, the frame 7 has a structure in which the frame 18 does not reach the region located on the concave side of the divided arc ceiling body 6 when the divided arc ceiling body 6 is constructed by the frame 7. .

  When the dome ceiling 8 is formed, the frame 18 located at a place where the dome ceiling 8 is combined with the other skeleton 7 has a convex portion of the frame 18 facing the outside of the skeleton 7 having a substantially rectangular parallelepiped shape, as shown in FIG. As installed. Moreover, the structure of the frame 7 in which the frames 18 are combined is not limited to the embodiment. The frame 7 supports and fixes the three vertices of the divided arc ceiling body 6 only on the convex side of the divided arc ceiling body 6. Therefore, as shown in FIG. 5 and FIG. 7, in order to support and fix the three vertices, the frame that constitutes the skeleton 7 is provided near the three vertices of the corresponding skeleton 7. A connecting piece 20 attached to 18 by welding or the like is provided. Further, as shown in FIG. 3, in order to reinforce the framework 7 from one vertex of the framework 7 having a substantially cubic shape to the other vertex on the diagonal line, both ends of the framework 7 are welded or screwed to the framework. A material 21 is provided. In the embodiment, the reinforcing material 21 is not provided on the upper surface of the skeleton 7 having a substantially cubic shape, but the reinforcing material 21 may be provided as necessary.

  With the substantially cubic frame 7, the three vertices of the divided arc ceiling body 6 having a shape radially divided into four from the top of the approximately hemisphere are supported and fixed only on the convex side of the divided arc ceiling body 6. In this case, as shown in FIG. 5 and FIG. 7, the vicinity of the three apexes of the skeleton 7 corresponding to the coupling hole 14 near the top and the bottom of the joint 12 provided in the divided arc ceiling body 6. The connecting piece 20 provided on the bolt 22 is screwed to the bolt 22a and the nut 23a to be supported and fixed. Further, the coupling hole 14 has a substantially bolt shape, and as shown in FIG. 5, when the divided arc ceiling body is coupled, the bolt may protrude to the side where it is joined to another divided arc ceiling body. In other words, it does not hinder the connection between the divided arc ceiling bodies. As described above, the division unit A is formed.

  The dome ceiling 8 is constructed by assembling four frames 7 constituting the divided unit A so that the concave side of each divided arc ceiling body 6 is located on the inner side and becomes a substantially semispherical shape. At that time, as shown in FIG. 5, the frame 7 is joined by screwing holes 19 provided in the frame 18 constituting the frame 7 with bolts 22b and nuts 23b. The bolts 22b and the nuts 23b may be the same as those used for screwing the plurality of frames 18 when the frame is constructed. Further, as shown in FIG. 5, the divided arc ceiling bodies 6 are screwed together with joint holes 13 provided in the joint portion 12, which is a component of the divided arc ceiling body 6, with bolts 22 c and nuts 23 c. To join. In that case, the airtightness of indoor space is ensured by using the above-mentioned airtight member 15a as needed. As shown in FIG. 8, the divided unit A formed as described above has a bolt 19d and a nut 23d as shown in FIG. 7, for example, in the hole 19 provided in the frame 7 constituting the divided unit A. The mounting position of the dome ceiling 8 is attached to a building housing 25 such as a truss with bolts 22e and nuts 23e through a metal substantially L-shaped mounting bracket 24 provided with a long hole 24a capable of fine adjustment. .

  And by using the ceiling finishing material 17 for finishing the ceiling around the dome ceiling 8 formed so as to correspond to the shape of the dome ceiling 8 as shown in FIG. Constitute. In this case, as shown in FIG. 7, an airtight member 15b as described above is provided between the jaw portion 16 and the ceiling finishing material 17 to ensure the airtightness of the indoor space. Yes. Furthermore, a ceiling heat insulating material can be easily laid on the frame constituting the ceiling dome, and the subsequent construction can be performed efficiently. In consideration of the shape of the ceiling dome 8 and the occupied area, the installation place of the dome ceiling 8 is preferably a hut back. In addition, when the projection device 10 is used as a constellation projector, the indoor space is darkened and viewed. Therefore, if it is often viewed in the daytime, the projector 10 should be provided on the north side as much as possible.

  The projection device 10 is attached to the other end of the arm 9 fixed at one end to any one of the frames 7 constituting the dome ceiling 8 and located directly below the apex of the dome ceiling 8. As shown in FIG. 6, one end of the arm 9 is fixed to one of the frames 7 constituting the dome ceiling 8 through a mounting base 27 having a rotating shaft 26 and being rotatable about the rotating shaft 26. Yes. The arm 9 and the mounting base 27 can be made of a light metal such as aluminum, carbon fiber, synthetic resin, or the like. Further, as shown in FIG. 7, one end of a bolt 22f is embedded in the mounting base 27 in advance, and the bolt 22f penetrates the ceiling finishing material 17, the airtight member 15b, the jaw 16 and the frame 18, The other end of the bolt 22f is fixed by a nut 23f. Thereby, the projection device 10 provided at the other end located directly below the apex of the dome ceiling 8 of the arm 9 and the arm 9 causes the dome ceiling 8 to be moved by the mounting base 27 having the rotation shaft 26. One end is fixed to one of the frames 7 to be configured. An electric wire 28 for supplying electricity to the projection device 10 provided at the other end of the arm 9 is electrically connected at one end to the projection device 10 and passes through the arm 9 and the mounting base 27. Furthermore, the ceiling finishing material 17 is penetrated, and the other end is electrically connected to a power source not shown in the figure.

  The arm 9 is preferably a member that is thin enough not to interfere with projection when the projection device 10 projects the projection surface 11. Further, the projection device 10 attached to the other end of the arm 9 is attached to an attachment base 27 having the rotation shaft 26. Therefore, when the projection apparatus 10 is used, the projection apparatus 10 is installed at a position directly below the apex of the dome ceiling 8 as shown in FIG. However, when the projection apparatus 10 is not used, it can be moved from the center of the dome ceiling 8 by rotating around the rotation shaft 26 as shown in FIG. Here, when the projection device 10 is a constellation projector, the constellation can be projected onto the dome ceiling 8, so that it is more realistic and has a powerful astronomical viewing than a conventional flat ceiling. You can enjoy. Further, when the projection device 10 is an illumination device, light from the illumination device is irradiated onto the projection surface 11. As a result, the light from the illumination device is not simply reflected from the projection surface 11, but indirect illumination brighter than usual is realized by a synergistic effect with the fluorescence emitted by the fluorescent material applied to the projection surface 11. be able to. Furthermore, since the projection surface 11 is a dome shape, the light reflected by the projection surface 11 can illuminate the entire indoor space. The constellation projector and the illuminating device are not shown in the figure, but can be operated on the main body as well as a remote control for remote operation using infrared rays so that remote operation is possible. Equipment.

  The projection surface 11 is formed by applying a fluorescent material to the inner surface of the dome ceiling 8. It is easier to apply the fluorescent material to the inside of the divided arc ceiling body 6 after the formation of the divided unit A because the divided arc ceiling body 6 is fixed by the framework 7 constituting the divided unit A. preferable. However, it may be after the dome ceiling 8 is formed or before the division unit A is formed. Furthermore, if the fluorescent material is added to the resin in advance, the step of applying the fluorescent material can be omitted, and the work can be performed efficiently. Moreover, as a fluorescent substance, the substance which emits fluorescence with respect to normal visible light (wavelength of about 400-800 nm) is used. Further, in addition to the visible light, it may be a substance that emits fluorescence even with respect to light in a shorter wavelength region (wavelength: about 350 to 400 nm) than visible light. Thereby, the projection surface 11 uses a filter glass that absorbs visible light and efficiently transmits ultraviolet rays in the short wavelength region, and a black light using a phosphor having an emission spectrum peak near 360 nm. It can also be used as the projection surface 11 for a projection apparatus.

  The dome-shaped ceiling unit I of the present invention can be applied not only to the projector 10 and the projection surface 11 described above, but also to facilities and houses where various dome ceilings 8 are required.

Dome ceiling mounting overall perspective view Perspective view of dome ceiling Perspective view of split unit Perspective view of the frame AA sectional view of the dome ceiling of Fig. 2 B-B side view of the split unit of FIG. BB side enlarged view of the split unit of FIG. Perspective view of mounting bracket Dome type ceiling unit indoor installation drawing Cross section of indoor installation of dome type ceiling unit The figure which moved the projection apparatus of FIG. Construction method of dome roof in the prior art

Explanation of symbols

6 Split Arc Ceiling 7 Frame 8 Dome Ceiling 9 Arm 10 Projector 11 Projection Surface 12 Joint 17 Joint Finishing Material 20 Joining Piece 21 Reinforcement Material 24 Mounting Bracket 25 Building Housing 27 Mounting Base

Claims (3)

Each of the substantially cube-shaped frames in which the three vertices of the divided arc ceiling body that is radially divided into four from the top of the substantially semispherical sphere are supported and fixed only on the convex side of the divided arc ceiling body. Assemble and assemble the four so that the concave side of the arc ceiling body is located inside and form a substantially semi-spherical shape,
A projection device is provided on the other end of the arm that is fixed to one of the frames constituting the dome ceiling, the other end being located directly below the apex of the dome ceiling,
The dome type ceiling unit is characterized in that it is a projection surface of light projected from the projection device in which a fluorescent material is applied to the inner side surface of the dome ceiling.   The dome-type ceiling unit according to claim 1, wherein the projection device is a constellation projector.   The dome-type ceiling unit according to claim 1, wherein the projection device is a lighting device.

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