JP5322007B2 - Planetarium screen structure and construction method - Google Patents

Description

  The present invention relates to a planetarium screen structure that prevents the vertical and horizontal seam portions of a screen panel constituting a screen from appearing as streaks when a projector-type projector is used with a planetarium.

  In the planetarium, in addition to the projection method that projects many stars and constellations with powerful rays from the projector onto the dome spherical screen of the planetarium in the dark, in recent years, images such as landscapes and images of stars and constellation pictures have been displayed. The number of planetarium dome halls that are equipped with a projector system for projecting onto a planetarium dome spherical screen by a projector is increasing.

  The installation of the planetarium dome spherical screen will be described with reference to FIGS. There are two types of planetarium projection domes: a horizontal type with a bowl-shaped dome spherical screen on the auditorium, and an inclined type with a bowl-shaped dome spherical screen tilted by about 15 to 30 degrees. This shows a vertical section of an inclined planetarium dome.

  An example of construction of a conventional planetarium dome spherical screen will be described with reference to FIG. The main frame 24 is a structure that forms a dome framework by arranging a plurality of frames radially from the apex of the dome along the inner periphery of the dome toward the floor surface. A trunk edge receiving metal fitting 30 is provided at an appropriate interval in the vertical direction inside the dome of each main frame 24. A metal ring-shaped horizontal barrel edge 29 along the inner periphery in the transverse direction of the dome is supported by a barrel edge fitting 30 provided at an appropriate interval in the vertical direction inside the dome of the main frame 24. The same number of vertical barrel edges 28 as the main frame 24 are attached to the annular horizontal barrel edge 29 along the inner side of the dome of the main frame 24 by bolts, rivets, welding or the like not shown. A plurality of punching aluminum panels 31 and 32 constituting a screen are stretched by attachment means such as a rivet 33 inside the dome of the plurality of vertical barrel edges 28.

  In this way, the side edges of the punching aluminum panels 31 and 32 are laterally attached to each main frame 24 via the annular horizontal barrel edge 29 in the horizontal direction, and are required in the horizontal direction by overlapping each other. In addition to being connected to each other, the required number of the punching aluminum panel 31 and the upper and lower ends of the punching aluminum panel 32 are connected to each other in an up-down direction of each vertical barrel edge 28 by a method of laminating each other. A dome spherical screen 25 is formed on the inner surface of the dome from the top to the top. Thus, the dome spherical screen 25 is configured by connecting a plurality of punching aluminum panels 31 and 32 in the horizontal direction and the vertical direction (see FIG. 8).

  Here, the punching aluminum panels 31 and 32 forming the dome spherical screen 25 are made of aluminum with a screen surface painted in white, and the punching aluminum panels 31 and 32 have a diameter of 1.5 in parallel or staggered on the entire surface. A large number of holes 36 having a diameter of about 2.0 mm are formed. Through the holes 36 formed in each of the punching aluminum panels 31 and 32, the sound from the speaker 26 provided in the space between the building 27 and the dome spherical screen 25 is heard and the sound such as sound is received from the audience seats. To be told. Further, on the building 27 side of the dome spherical screen 25, a sound absorbing material 34 such as glass wool is disposed at a distance from the dome spherical screen 25, and the sound absorbing material 34 reflects the sound in the dome. It has the acoustic effect of preventing it. In addition, the vertical horizontal barrel edge 29 made of metal on the vertical side edge 28 reflects light from both side edges 28 and 29 through a large number of holes 36 formed in the punching aluminum panels 31 and 32 from the spectator seat side. In order to prevent this, the whole is painted black in advance for matting, and a cooling chill (not shown) is disposed between the sound absorbing material 34 and the dome spherical screen 25 to further enhance the antireflection effect.

  No lighting is arranged in the space between the building 27 and the punching aluminum panels 31 and 32, and the building side of the punching aluminum panels 31 and 32 is covered with a sound absorbing material 34. Since it is completely dark, the hole 36 formed in the punching aluminum panels 31 and 32 is simply recognized as a black dot from the audience seat side. And in the darkness in the planetarium dome, the white background and the black spots are mixed together because many black spots are scattered in the white background of the entire surface of the punched aluminum panels 31 and 32 coated in white. Thus, the entire surface of the dome spherical screen 25 is felt slightly pale.

  The planetarium dome spherical screen 25 is constructed in this way, but as described above, a projection method for projecting and displaying many stars and constellations with powerful rays from the projector onto the planetarium hemispherical dome spherical screen in the dark. Then, many stars and constellations projected from the projector on the white dome spherical screen 25 in the darkness of the planetarium dome are displayed as shining points by powerful rays, so the dome spherical screen 25 in the darkness. The screen surface remains dark and the screen inside the planetarium dome is not worrisome.

  However, in the video projection projector system that has been installed together with the projection system in recent years, images of landscapes and stars are projected and displayed on the dome spherical screen 25 in the dark, so images of landscapes and stars are widely used. Displayed as a bright surface. For this reason, the interior of the planetarium dome is dimly lit by light from images such as brightly projected landscapes and star patterns, and the dome spherical screen 25 on which images of landscapes and stars, images of constellations, etc. are projected. The dome spherical screen 25 as a whole becomes much brighter as a result of the dim light spreading throughout the entire area. As a result, the punching aluminum panels 31 and 32 forming the dome spherical screen 25 have a large number of holes 36 formed on the entire surface, so that the entire surface of the dome spherical screen 25 looks slightly pale. In the connection part on the part of the vertical barrel edge 28 that connects the left and right 31 and 32, the ground color of the vertical barrel edge 28 from the hole 36 of the punching aluminum panels 31 and 32 is as shown in FIG. Vertical and horizontal lines 37 and 38 appear throughout 25. In addition, in the connection portion 39 on the portion of the horizontal barrel edge 29 that connects the punching aluminum panels 31 and 32 in the vertical direction, the ground color of the horizontal barrel edge can be seen through the hole 36 of the punching aluminum panels 31 and 32. The joints in the left / right and up / down directions just look bad when white streaks such as vertical streaks 37 and horizontal streaks 38 appear in the dim light, and are very disturbing to the audience watching the dome spherical screen 25. (See FIGS. 9, 10, and 11).

  For this reason, in order to prevent these seams 39 from appearing as white stripes (vertical stripes 37 and horizontal stripes 38), the existing planetarium of the projection system has a new dome spherical screen when the video projection projector system is added. As shown in FIG. 8, when the adjacent punching aluminum panels 31 and 32 are stacked, the punching aluminum panel 31 and one of the punching aluminum panels 32 on the vertical barrel edge 28 on the inner side of the dome. Is temporarily mounted, and the other punching aluminum panel is mounted thereon, and both the punching aluminum panels are attached to the surface of the vertical barrel edge 28 with bolts or rivets 33 and fixed. At this time, the black tape 35 is inserted between the adjacent punching aluminum panels 31 and 32 and attached. Further, the black tape 35 is inserted between the horizontal barrel edge 29 and the punching aluminum panels 31 and 32 adjacent to each other in the vertical direction between the punching aluminum panels 31 and 32 adjacent to the vertical.

  By attaching the black tape 35 in such a manner, the black tape 35 can be seen through the holes 36 formed in the punched aluminum panel from the spectator seat. Similar to the portion other than the portion attached to the horizontal barrel edge 29, the entire surface of the dome spherical screen 25 is felt light blue without white stripes being seen. However, as shown in FIG. 8, in the method of overlapping the punching aluminum panels adjacent to each other in the horizontal direction and the vertical direction, the black tape 35 attached with insertion interposed between the punching aluminum panels stacked in the horizontal direction and the vertical direction. Inserting it so that it does not stick out is difficult to install because it is a construction with great care, but if the black tape goes too far into the overlying part, the white streaks in the part will be noticeable It will be said that. In particular, in the method of overlapping the punching aluminum panels that are adjacent in the horizontal and vertical directions, the side edges of the black tape pasted from the vertical and horizontal barrel edges protrude and the black stripes due to the black tape become more noticeable. End up.

  In the method of overlapping the punching aluminum panels adjacent to each other in the horizontal direction and the vertical direction, there is a step, and when the light from the projector hits the joint from the horizontal direction, a shadow due to the step of the panel appears as shown in FIG. There is a problem that the video becomes unsightly. In addition, in order to add the video projection projector system to the existing planetarium of the projection system as described above, the horizontal and vertical joints between the punching aluminum panels adjacent to each other in the horizontal and vertical directions constituting the dome spherical screen are dim. However, there is a problem that it takes a lot of money and construction time to newly install or refurbish so as not to cause a defect that white stripes appear.

JP 2002-276478 A

  Therefore, in the structure of the planetarium screen panel of the present invention and its construction, it was made by the above-mentioned problem, even in the case of the butting method or the overlapping bonding method by contacting the ends of adjacent punching aluminum panels, A black dot that is the same color as the punching aluminum panel that forms the dome spherical screen and the same size as the hole formed on the entire surface of the punching aluminum panel is placed on the joint between adjacent punching aluminum panels. Or, by stretching a long tape printed in a staggered pattern, even when projecting images such as landscapes and star patterns with a video projection projector, the joints of adjacent punching aluminum panels that make up the screen Intended to prevent white or black streaks from appearing A.

  In order to achieve the above-mentioned object, the invention described in claim 1 of the present invention is a white system ground similar to the panel on the joint portion of the punching aluminum panel constituting the dome spherical screen of the new or existing planetarium. A long tape with a large number of black dots printed on the entire front surface and an adhesive layer applied to the back surface is pasted.

  In order to achieve the above object, the present invention according to claims 2 and 3 of the present invention is characterized in that the joint portion is a joint portion where the end portions of the upper and lower or adjacent panels are abutted, or the end of the upper and lower or adjacent panels. It is characterized in that it is a seam portion in which the portions are laminated and pasted.

  In order to achieve the above object, the invention according to claim 4 of the present invention, in the construction of a new or existing planetarium screen panel, on the joint portion of the punching aluminum panel constituting the planetarium dome spherical screen, A large number of black dots are printed on the entire surface of a white background similar to the panel, and a long tape having an adhesive layer applied to the back is pasted.

The invention according to claims 1 to 4 of the present invention has the following effects.
1. In the construction and construction of a planetarium screen panel, the seam part of the punched aluminum panel that constitutes the new or existing planetaryium dome spherical screen is the seam part where the end parts of the panels are abutted, or the end part of the panels. Even if the seam part is an overlapped seam part, a large number of black dots are printed on the entire surface of the joint part on the seam part with a white background similar to the panel, and an adhesive layer is applied on the back side. By sticking a tape that is slightly larger than the width of the seam area, the vertical and horizontal seam areas of the punching aluminum panel will appear as white lines even if the projector projects and displays images such as landscapes and stars on the spherical surface of the dome. Or it doesn't appear as a black streak, making it difficult for the audience to see the dome screen. That there is no.

2. Even if the seam part of the punching aluminum panel constituting the planetarium dome spherical screen has a step part due to the seam part where the end parts of the panels are abutted or the end part of the panels are overlapped, It is also possible to eliminate the fact that the light hits from the side and shadows due to steps appear, resulting in an unsightly image, and it is long on the joint of the punching aluminum panel that forms the existing planetarium dome spherical screen. Since the tape is just a little larger than the width of the seam, the repair cost is low and the construction is easy.

The top view of the tape with a black dot used by this invention. The perspective view of the principal part which shows the construction example which shows the outline of construction of this invention. The expansion perspective view of FIG. BRIEF DESCRIPTION OF THE DRAWINGS The schematic of the butt | matching system which is 1st Example of the punching aluminum panel of this invention. Schematic of the overlaying system which is a 2nd Example of the punching aluminum panel of this invention. The schematic longitudinal cross-sectional view of a planetarium. The perspective view of the principal part which shows the outline of construction of the conventional planetarium. Schematic of a conventional planetarium punching aluminum panel overlaid system. A state diagram in which vertical and horizontal jima appear on a conventional planetarium dome spherical screen. FIG. 3 is a state diagram in which vertical zima appears on a conventional planetarium dome spherical screen. A state diagram in which a horizontal zima appears on a conventional planetarium dome spherical screen.

  Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 in FIG. 1 is a long tape used in the present invention and having a width slightly larger than the width of the vertical barrel edge 6 or the horizontal barrel edge 7, and the surface thereof is a punched aluminum panel 4 forming a dome spherical screen, The black dots 2 of the same color as the white punching aluminum panel similar to 5 and having the same size as the holes 11 formed on the entire surface of the punching aluminum panels 4 and 5 are parallel or Many are printed in a staggered pattern. On the back surface of the tape 1, an adhesive layer for applying the tape to a joint portion between adjacent punching aluminum panels 4 and 5 forming a dome spherical screen as described later is applied. The large number of black dots 2 printed on the surface of the tape 1 are the dots of the white background on the entire surface of the tape 1 and the black dots 2 printed on the entire surface of the tape 1 on the white background in the dome of the dark planetarium. Coupled with being, it feels pale.

  FIG. 2 is a construction example showing an outline of construction of the present invention, and FIG. 3 is an enlarged perspective view of FIG. Reference numeral 3 denotes a main frame, which is a structure that forms a dome framework by arranging a plurality of frames radially from the top of the dome to the floor along the inner periphery of the dome. A trunk edge receiving metal fitting 8 is provided at an appropriate interval in the vertical direction inside the dome of each main frame 3. A metal ring-shaped horizontal barrel edge 7 along the inner periphery in the transverse direction of the dome is supported by a barrel edge receiving bracket 8 provided at an appropriate interval in the vertical direction inside the dome of the main frame 3. The same number of vertical barrel edges 6 as the main frame 3 are attached to the annular lateral barrel edge 7 along the inner side of the dome of the main frame 3 by bolts, rivets, welding or the like not shown. A plurality of punching aluminum panels 4 and 5 constituting a screen are stretched by attachment means such as a rivet 11 inside the dome of the plurality of vertical barrel edges 6.

  Here, the punching aluminum panels 4 and 5 forming the dome spherical screen are made of aluminum with the screen surface painted in white as in the conventional screen, and the punching aluminum panels 4 and 5 are parallel or A large number of holes 11 having a diameter of about 1.5 to 2.0 mm are formed in a staggered pattern. Sounds such as commentary and sound from the speakers provided in the space between the building and the dome spherical screen are transmitted to the audience in the audience seats through the holes 11 formed in the punched aluminum panel. . Further, a sound absorbing material 11 such as glass wool is disposed on the building side of the punching aluminum panels 4 and 5 forming the dome spherical screen, and the sound absorbing material 11 functions to prevent sound reflection in the dome. Yes. Further, the cold water bottle 9 is provided between the dome spherical screen of the planetarium formed by the vertical barrel edge 6 and the punching aluminum panels 4 and 5, and light from a member or the like disposed on the back side of the dome spherical screen. It is provided in order to prevent reflection. Further, the vertical barrel edge 6 and the metal ring-shaped horizontal barrel edge 7 are connected to both the barrel edges 6 and 7 through a large number of holes 11 and 11 formed in the punching aluminum panels 4 and 5 from the audience seat side. The whole is painted black in advance to prevent light reflection. The anti-reflective effect is further achieved by the two rims 6 and 7 and the cold ridges 9 painted black in advance for matting.

  The abutting method of FIG. 4 for attaching punching aluminum panels 4 and 5 constituting the screen in the lateral direction of the vertical barrel edge 6 arranged from the top of the dome to the floor surface along the inner periphery of the dome will be described. The horizontal trunk edge of the vertical trunk edge 6 attached to the annular horizontal trunk edge 7 supported by 8 on the vertical edge inside the dome of the main frame 3 constituting the framework of the dome and provided at appropriate intervals in the vertical direction. 7. The side edges of the punching aluminum panel 4 and the punching aluminum panel 5 are butted against each other in the longitudinal direction on the side opposite to the mounting side of the plate 7. Fix it. Thereafter, the punched aluminum panel is circulated in the horizontal direction in this way to form the lower screen. In this way, the middle screen is formed above the lower screen, the upper screen is further formed, and the zenith screen is formed thereon.

  When the middle screen is provided on the upper part of the lower screen, the lower punching aluminum panel and the upper and lower ends of the upper punching aluminum panel are connected to each other in the same manner as when the punching aluminum panel is mounted horizontally. 7 is abutted on the side surface of 7 and is attached to the horizontal barrel edge 7 with bolts or rivets. The same construction is also performed when the zenith portion of the screen is configured, and a long tape 1 on which a large number of black dots 2 are printed is adhered to a joint portion where each punching aluminum panel 4 and the punching aluminum panel 5 are abutted.

  By sticking the long tape 1 with many black dots 2 printed on the joint where the punching aluminum panel 4 and the punching aluminum panel 5 are abutted in this way, the projector uses a projector system to provide landscape images, stars, and constellations. Even if the inside of the planetarium dome becomes much brighter when images such as pictures are projected and displayed, this tape has a long tape 1 with many black dots 2 printed on the joints of the panel. There is no visual difference between the punched aluminum panel 4 and the punched aluminum panel 5 that are not attached to the audience seat. Further, the black dots 2 are formed on the joints of the punching aluminum panel 4 and the punching aluminum panel 5 constituting the existing screen without newly stretching the punching aluminum panel 4 and the punching aluminum panel 5 constituting the dome spherical screen. The same effect can be obtained by simply sticking the long tape 1 printed with a large number of the tapes.

  Next, the superposition method of FIG. 5 will be described. Similar to the butting method, the vertical barrel edge is attached to an annular horizontal barrel edge 7 supported by a barrel edge fitting 8 provided at an appropriate interval in the vertical direction inside the dome of the main frame 3 constituting the framework of the dome. 6 punching aluminum panel 4 and punching aluminum panel 5 are temporarily fixed in the longitudinal direction on the side opposite to the mounting side of horizontal barrel edge 7 and mounted, and the other punching aluminum panel is mounted thereon. Both punching aluminum panels are attached to the 6 sides of the vertical barrel edge with bolts or rivets 10 and fixed. Thereafter, the punched aluminum panel is circulated in the horizontal direction in this way to form the lower screen. Thus, the lower screen, the middle screen, and the upper screen are formed, and the zenith screen is formed thereon. Further, a long tape 1 on which a large number of black dots 2 are printed is attached to a joint portion where each punching aluminum panel and the punching aluminum panel are laminated and pasted. Even when a long tape 1 with a large number of black dots 2 printed on the seam portion by this overlapping method is pasted, there is no visual difference from the spectator seat as described above, and the existing panel Even if a long tape 1 having a large number of black dots 2 printed thereon is stretched, the same effect as the butting method can be obtained.

1 tape,
2 Black dots,
3 mainframe,
4 Punching aluminum panel,
5 Punching aluminum panel,
6 Vertical waist,
7 Horizontal torso,
8 Trunk edge bracket,
9 Cold chill,
10 Sound absorbing material,
11 holes.

Claims (4)

  On the seam part of the punching aluminum panel that constitutes the newly established or existing planetarium dome spherical screen, a long length with many black dots printed on the entire surface of the white surface similar to the panel and an adhesive layer applied on the back A planetarium screen structure characterized by tapes.   2. The planetarium screen structure according to claim 1, wherein the joint portion is a joint portion in which end portions of upper and lower panels or adjacent panels are abutted with each other.   2. The planetarium screen structure according to claim 1, wherein the joint portion is a joint portion in which end portions of upper and lower panels or adjacent panels are overlapped.   On the seam part of the punching aluminum panel that constitutes the new or existing planetarium dome spherical screen, a large number of black dots are printed on the entire surface with a white background similar to the panel, and an adhesive layer is applied on the back A method for constructing a planetarium screen, characterized by sticking a tape.

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