JP4023694B1 - Resonator type glass block made of glass with light diffraction action - Google Patents

Abstract

[Purpose] To add sound absorption performance to the glass block, taking advantage of its sound insulation effect.
[Construction] Glass block vagina 25 is embedded in a hollow layer with a substantially vacuum cross-section reconstructed structure, and a spherical cylinder is embedded, and the vertical width of the slit 26 opening is made smaller than the outer shape of the cylinder to The glass block is equipped with a slit 26 that has a size that prevents insertion, and has a sound absorbing function in the mid-low range due to the resonator effect. At the same time as expanding the design development of various architectures for areas where you want to enhance the sound absorption effect in spaces with a lot of background noise such as architectural atriums, public passages (see Fig. 9), art gallery courtyards, and atriums. It enhances the harmony effect of light transmission, refraction, and reflection light due to the effect of illuminating light film and room lighting.
[Selection] Figure 2

Description

  The present invention relates to a glass block that forms a long slit-like sound absorbing hole in a glass block and a spherical cylindrical body inside a cavity.

In the present invention, the conventional resonator type sound absorbing block is not made of glass but mainly made of concrete, and the glass block of the present invention is lighter and easier to replace than the conventional concrete made,
For doors ◇ Specific fire prevention equipment (former Class A fire door / fire prevention equipment (former Class B fire door)
In the case of walls and roofing materials ◇ Fireproof structure (outer wall non-proof strength 1 hour, roofing material 30 minutes)
It is estimated that the acquisition of the product will be recognized as equivalent if it is consulted with the government like conventional products.
It also relates to a sound-absorbing glass block having a light diffraction effect, which is a medium / low-frequency resonator type for the purpose of reducing noise, particularly in a frequency range of 100 Hz to 1000 hz.

Overcrowding of cities accompanying the development of culture and industrialization includes the expansion of high-speed railways and highways, large-scale development atriums, public passages, sports, leisure facilities, assembly facilities, high-rise housing, and factories. As a result, the noise problem has been raised as a new environmental pollution.
In addition, as with noise, the adjustment of sound in atriums and public passages (Fig. 7, wall surfaces with glass blocks: art galleries) is regarded as important in terms of design for the improvement of the acoustic environment in work spaces, living spaces, and public passages. It has become a trend.

Such sound measures can be broadly divided into sound insulation, sound absorption, and vibration attenuation.
The frequency range of 100hz to 1000hz, which is important for countermeasures, can be broadly divided into low, medium, and high sound ranges. * 1, high sound range (2000hz or more) ・ ・ Porous material (glass wool rock rock) ・ Spraying material ・ fiber Materials * 2, Mid-range ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Perforated plate (perforated plasterboard, perforated iron plate, etc.)
* 3. Low frequency range ················································ difficult However, there is a drawback that the space or the thickness of the air layer is negative in terms of space and cost.

  Therefore, as a countermeasure, a Helmholtz resonator is used to absorb mainly the sound in the low range. The sound absorption block made of glass using this resonator is added with the harmony effect of light due to the diffraction of light by the spherical cylinder in the sound absorption chamber cavity layer with a return layer structure (see Fig. 10). In addition, a resonator effect can be expected by utilizing the sound absorption property of the air layer in the office or living room where the input sound that has passed through the glass block slit from a sound source such as a road is wide. (See Figure 9)

Since there is no glass block in the public utility model publication, it is made of concrete.
Japanese Utility Model Publication No.57-688220 JP-A-56-119056

  In the prior art, the sound-absorbing block is only made of concrete or ceramics and does not transmit light due to the nature of the material. Therefore, there is a drawback that it cannot be used for a window in a building part of a room such as an office room or a living room that requires lighting. (In principle, the Building Standards Law obliges.)

  In order to solve the above-described problems of the conventional sound absorbing block, the present invention is a sound absorbing block having a rectangular shape in which the inner vagina is substantially vacuum, and includes side walls provided at both ends of the wall portions facing each other. Provided is a glass medium / low-frequency resonator type sound absorbing block provided with a slit in which a cylindrical body having a spherical cross section is embedded.

  The present invention is a glass sound-absorbing block to which this resonator is applied, and adds a light harmony effect due to the diffraction of light by a cylindrical partition wall in the sound-absorbing chamber cavity layer having a return layer structure (background art FIG. 10). See also) A resonator effect can also be expected by utilizing the sound absorption of the office room in the space where the input sound that has passed through the glass block slit from the sound source side such as a road is wide, and other rooms. (See the background art Fig. 9)

  The present invention provides a conventional standard glass block having a long slit-like sound absorbing hole directly connected to one layer of the return layer structure, and having a spherical cylindrical partition wall inside the sound absorbing cavity. Commercialized as a resonator type sound absorption block.

FIG. 2 is a cross-sectional view of a resonator type glass block according to the present invention.
21 and 22 indicate a glass surface 23, a joint side surface 24, a spherical cylindrical body 25, a substantially vacuum vagina 26, and a slit, respectively.

Figure 1 shows the light diffraction pattern of various cases of the present invention.
1-1. Diffraction pattern of rectangular aperture When light enters a rectangular (slit-shaped) aperture, a lot of rectangular diffraction light appears in the incident direction but decreases on the side.
1-2, Small particles of light # 1
When light strikes the sphere, a thin film of light and scattered light are generated around it. It is also applied to electron microscopes.
1-3, Small particles of light # 2
When light is inserted into the hole, a thin film of circular light is generated behind the hole, and simultaneously incident light 1 and scattered light 2 are generated.

(Reference) Invitation to Science P100 ・ P158 ・ P166 Hector Optics II P239

FIG. 2 shows a cross-sectional view 26 and a figure 24 of the resonator block.
2-1, shows a slit 26 and a spherical cylinder 24, and the width of the slit is made smaller than the diameter of the cigarette.
2-2 shows the same as above.
2-3. An example of a wall layout slit layout is shown.

FIG. 3 shows a situation in which the following diffraction images of light overlap each other and the glass block surface.
3-1 is an example in which a horizontal slit is provided in the block.
3-2 is an example in which a vertical slit is provided in the block.
3-3 is an example of a wall surface composed of blocks each provided with a horizontal slit and a vertical slit.
1-1, the diffraction pattern 31 of light having a rectangular opening corresponds to the diffraction pattern 1-1 in FIG.
1-2, the diffraction pattern of light by a spherical cylinder 32 corresponds to the diffraction of 1-2 in FIG. .
1-3, the light diffraction pattern 33 by the holes corresponds to 1-3 in FIG.
34, is the glass surface
35 is a glass block edge surface.

FIG. 4 is a shape photograph in which three resonator blocks are arranged side by side.
The left two blocks are transparent glass, and the right block is ground glass.

FIG. 5 shows the layout of the folding screen storage state that is stored horizontally on the horizontal shelf in the Shosoin Kitakura. For the time being, there will be only one slit, but the figure shows an expected figure of the future slit layout after looking at trends such as the desires of customers after commercialization.
The length of the folding screen is
5-1, Kitakura 44 屏 帖 帖 No. 2 Yanagi 長 52 long 149 cm 51 short 54 cm
5-2, Kitakura 44 屏風 帖 No. 3 Yanagi Pass 54 long 150 cm 53 short 51, 5 cm
5-3, Kitakura 44 屏風 帖 No.4 temporary group bamboo shoot 164 long 164cm 55 short 56-58cm.

FIG. 6 shows the classification of sound absorbing mechanisms, and the present invention adopts a C resonator type.
A is * 1, porous material Part of the energy of the sound is consumed as thermal energy, and its sound absorption frequency characteristic is small at low frequencies (100HZ to 250HZ) and large at high frequencies (2000HZ and above).
B is * 2, plate vibration type Part of the energy of the sound is consumed by the loss inside the vibration system, and the sound absorption frequency characteristic has a peak in its low frequency range (around 500HZ).
C is * 3, resonator type When a sound hits the shape of a hole in the cavity, the air in the hole vibrates vigorously and is consumed as frictional heat with the surroundings, and its sound absorption frequency characteristic is at the resonance frequency (near 750HZ). Very large value.

  FIG. 7 shows a space photograph of an art gallery in which glass blocks are stacked in a public passage or the like, and each glass block is not provided with a slit.

  FIG. 8 is a detailed photograph of the wall block in FIG. 7, which is a virtual photograph of a layout provided with slits 81 and a light diffraction pattern 82. Some glass blocks have a display 83.

FIG. 9 is an explanatory diagram of sound absorption by a resonator effect in an actual living room and the resonator effect on a sound source side such as a road.
A-1 and A-2 indicate sound insulation by the outside and sound absorption by the resonator effect of the resonator block in the room.

Fig. 10 shows the SOHO (Small Office, Home Office abbreviation) glass block wall surface, staircase, and elevator glass block wall surface. Represents the overall silhouette of the bundle.
The tentative layout of the building is the daytime. ・ The reflection of light, the transmission of light from the glass block, reflection, refraction, and refraction, and the enjoyment of the shadow pattern due to the time change of sunlight, Represents a bundle.
At night, the subtle changes in the illumination light through the glass block due to the appearance of residents and visitors can be enjoyed in the same fun and beauty as in the daytime.

Analysis pattern of light. Resonator block sectional view and slit figure, 3-1, horizontal, 3-2, vertical, 3-3, square, and other wall surface slit layout. Light diffraction image. Resonator block shape photo. Shosoin Kitakura, screen layout (future slit assumption) Sound absorption mechanism: Outline diagram of three basic sound absorption characteristics of the sound absorption structure. Art gallery space photo ... Image of the glass block wall of light. No slit. Wall block detail photo (slit virtual photo). Explanatory drawing of an actual usage example. Harmony of light <Building layout plan>

Explanation of symbols

Figure 1
1-1. Diffraction pattern of rectangular aperture.
1-2 Small particles of light # 1.
1-3, Small particles of light 2.

Figure 2
21 、 The glass surface of the resonator block.
22. The glass surface of the resonator block.
23, joint side.
24, spherical cylinder.
25, almost in the vagina.
26, a slit.

Fig 3
31. Light diffraction pattern of rectangular aperture (slit).
32. Light diffraction pattern by a spherical cylinder.
33. Light diffraction pattern by holes.
34, the glass surface.
35 、 Glass block edge

Fig 5
5-1, Kitakura 44 屏風 帖 第 2 号 帖木 帖 Long 149cm, 52 Short 54cm, 51
5-2, Kitakura 44 屏風 帖 第 3 号 梁 木 帖 Long 150cm, 52 Short 51.5cm, 53
5-3, Kitakura 44 屏風 帖 No.4 Tentative Bamboo Long 164cm, 56 Short 56-58cm, 55

Fig 8
81, slit.
82, Light diffraction:
83, display.

Fig. 9
91, glass block wall
92, living room
93, desk
24, spherical cylinder (see Figure 2)
26, slit (see Fig. 2)

Claims (3)

A slit comprising a wall portion facing each other and side walls provided at both ends of the wall, the inner vagina being a substantially vacuum sound absorption block, and a cylindrical body having a spherical cross section embedded in at least one of the wall portions Resonator-type sound absorbing block made of glass, characterized by having The glass block according to claim 1, wherein the block has a light diffraction effect. The resonator-type sound absorbing block for glass mid-low sounds according to any one of claims 1 and 2, characterized in that the vertical width of the slit opening is smaller than the outer diameter of the cylindrical body.