JPH0715854Y2 - Soundproof wall - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a soundproof wall mainly composed of a transparent sound absorbing type sound insulating panel having a sound insulating function, a sound absorbing function, and a see-through property.

"Prior art" Generally, in order to prevent noise, check the source of the sound,
Measures are taken by investigating the nature of sound and the sound propagation system.

By the way, in the case of a highway, the sound source is a moving car, so sound barriers are built on both sides of the road to prevent noise from spreading to the roadside, and especially traffic noise pollution. In the present situation where the soundproof wall is expanding, the soundproof wall itself is made higher by expanding the installation area of the soundproof wall.

As a sound insulation panel for a soundproof wall, a precast concrete plate, a metal sound absorption plate, and a frame in which a transparent resin plate (for example, polycarbonate) is incorporated are used.

"Problems to be solved by the invention" Among the sound insulation panels described above, the precast concrete board, the metal sound absorption board, and the like are so-called non-transparent barriers, so that the visual environment inside and outside of them deteriorates and emits noise. On the sound source side, there is a feeling of blockage and psychological pressure due to the sound insulation panel.

From this point of view, the sound insulation panel using the transparent resin plate has the obvious see-through property, so that it can be said that the above problems do not occur and it is easy to be in harmony with the surrounding environment.

Therefore, at present, sound insulation panels using transparent resin plates are being widely used.

However, in the case of a transparent resin plate, it has no sound absorption, low sound insulation (decreased noise prevention function), easy to get dirty and scratched (degraded transparency), and difficult to clean (transparency). It has been pointed out that it is difficult to recover), and a new problem will arise with the transparency of sound insulation panels.

In addition, the plate glass replacing the transparent resin plate is superior to the transparent resin plate in the noise prevention function, the maintenance of the transparency and the restoration thereof, but in consideration of the secondary disaster when it is broken due to an unexpected situation, Its use is limited.

The present invention has been made in view of the above-mentioned technical problems, and has sound insulation, sound absorption,
The purpose of the present invention is to provide a soundproof wall that can satisfy the requirements such as transparency, harmony with the surrounding environment, simplification of construction, easy implementation, low cost, and safety.

[Means for Solving the Problem] In order to achieve the intended purpose, the soundproof wall according to the specific invention (Claim 1) has a transparent sound-absorbing sound-insulating panel, a transparent sound-insulating plate made of laminated glass, and the transparent sound-insulating plate. A frame surrounding the sound insulation plate, a perforated plate attached to the surface of the horizontal cross section of this frame, a sound absorber having a porous sound absorbing material, and a perforated plate also on the surface of the column, A sound absorbing body provided with a porous sound absorbing material is attached, and the transparent sound absorbing type sound insulation panel is fitted between the columns that are erected at intervals corresponding to the panel width. To do.

In order to achieve the intended purpose, the soundproof wall according to the related invention (Claim 2) is a frame in which a transparent sound absorbing type sound insulating panel surrounds the transparent sound insulating plate made of laminated glass and the transparent sound insulating plate. And a sound absorbing body provided with a perforated plate and a porous sound absorbing material attached to the surface of the horizontal cross section of the frame, and a sound absorbing body provided with a perforated plate and a porous sound absorbing material also on the surface of the column. And the transparent sound-absorbing sound-insulating panel is fitted between the pillars that are erected at an interval corresponding to the panel width, and is arranged on the back surface side of the transparent sound-insulating plate. A protective net is attached to the transparent sound absorbing type sound insulation panel via an elastic support tool.

[Operation] In the soundproof wall according to the specific invention, at the boundary between the noise generation area and the noise prevention area, the panel surface having the sound absorbing body should be built toward the noise generation area side to propagate from the noise generation area to the noise blocking area. The noise is blocked by the transparent sound insulation plate and absorbed by the sound absorber.

In this case, since the transparent sound-insulating plate is made of laminated glass, it has not only transparency, but also high sound-insulating effect, resistance to damage and damage, and easy cleaning.

Moreover, since sound absorbing bodies including a perforated plate and a porous sound absorbing material are mounted on the surface of the horizontal cross section of the frame (exposed surface on the front side) and the surface of the support, respectively, it will be blocked by the transparent sound insulating plate and scattered. It is possible to absorb this sound source from all around the transparent sound insulation plate without letting it escape to other places. Therefore,
The noise absorption effect is further enhanced by the sound absorption function that cooperates with the sound insulation function.

In addition, on the surface of the frame with a transparent sound insulation plate incorporated,
Since it is only necessary to attach the sound absorbing body, the panel structure can be simplified, and since the panel only needs to be built in a predetermined place, construction can be easily performed and cost reduction can be expected.

The soundproof wall according to the related invention is also used in the same manner as in the case of the specific invention to block and absorb noise.

Since the soundproof wall according to the related invention has the main structure of the specific invention, it has the same characteristics as those described above.

In addition, since a protective net is attached to the back side of the frame so as to cover the transparent sound insulating plate via an elastic support, the transparent sound insulating plate made of laminated glass may be damaged due to an unexpected situation. Even because of its protective net
It is possible to prevent the broken glass from falling, and thus to ensure safety.

[Example] Hereinafter, an example of the soundproof wall according to the present invention will be described with reference to the drawings.

1 to 3 show an embodiment of a specific device.

In FIG. 1, 1 indicates a road such as a highway,
Reference numeral 2 denotes transparent sound absorbing type sound insulation panels built on both sides of the road 1.

The sound absorbing panel 2 of the transparent sound absorbing type has a frame 3, a transparent sound insulating plate 4 and a sound absorbing body 5 as main components and is constructed as shown in FIGS. 2 and 3.

That is, the frame 3 is made of an aluminum mold material as an example, and an FRP mold material as another example, and is provided with a pair of upper and lower horizontal rail portions 6 and a pair of left and right vertical rail portions 7, which form a quadrangular frame. It is composed.

A step portion 8 for mounting the transparent sound insulating plate 4 is formed on the back surface side of the frame 3, and on the front surface side of the frame 3,
Fixed piece 9 for mounting the sound absorbing body 5 on the horizontal cross section 6, grooved piece
10 are formed.

As an example, the transparent sound-insulating plate 4 is composed of two pieces of float glass having a plate thickness of 3 mm and laminated glass bonded by a 0.75 mm intermediate curtain interposed between the float glasses, and a rubber or An elastic packing 11 made of synthetic resin is fitted.

The transparent sound-insulating plate 4 having the elastic packing 11 is fitted into the step portion 8 from the back surface side of the frame 3, and then is pushed over the elastic packing 11 and the back surface of the frame 3.
12 is the frame 3 via the fasteners 13 such as bolts and nuts.
, And thus the transparent sound insulation plate 4 is mounted on the frame 3.

The sound absorbing body 5 is, for example, a combination of a perforated plate 14 made of an aluminum mold material and having a substantially L-shaped cross section, and a porous sound absorbing material 15 made of waterproof glass wool and having a quadrangular cross section.

In this case, the perforated plate 14 is abutted to the two surfaces sandwiching the right angle of the porous sound absorbing material 15, such as the front surface and the lower surface of the porous sound absorbing material 15, or the front surface and the upper surface, and the perforated plate 14 and the porous material. The sound absorbing materials 15 are fixed to each other.

In the sound absorbing body 5, inside the fitting portion 6 with one end of the perforated plate 14 abutting on the fixed piece 9 and the other end of the perforated plate 14 inserted into the grooved piece 10 on the front surface side of the frame 3. Fit in,
Moreover, it is attached to the horizontal cross section 6 by a fastener such as a screw twisted across one end of the perforated plate 14 and the fixed piece 9.

As shown in FIG. 1, struts 16 made of, for example, H-shaped steel, L-shaped steel, grooved steel, or the like are provided at predetermined intervals on both sides of the road 1 on which the transparent sound-absorbing sound-insulating panel 2 thus constructed is built. The sound insulation panel 2 is installed upright and the sound absorber 5
The surface of the pillar is fitted between the pillars 16 with the surface facing the road 1 side, and the pillars are fastened by fasteners such as bolts and nuts.
Fixed at 16.

In the case of the example shown in the figure, the sound insulation panels 2 are built in two steps above and below the predetermined section of the road 1. However, the number of steps of these sound insulation panels 2 is arbitrarily set according to the situation of the road 1 which is a noise generation area. Therefore, the number of stages of the sound insulation panel 2 may be increased or decreased as compared with the case of the illustrated example.

In addition, the vertical cross-section 7 of the sound insulation panel 2 fits into the column 16 when the panel 2 is built, and the surface thereof is the column 16.
Since it is more hidden, the sound absorber 5 is not attached, and instead, the sound absorber 5 is attached to the surface of the support 16.

However, in the case of a built-in mode in which the surface of the vertical rail portion 7 is exposed to the road 1 side, the sound absorbing body 5 is also attached to the surface of the vertical rail portion 7.

In the road 1 described above, a noise generation area A is between the transparent sound absorbing noise panels 2 built on both sides of the road 1, and a noise prevention area B is outside the sound insulation panels 2.

On the road 1, when noise is emitted from a running vehicle, the noise trying to propagate from the noise generation area A to the noise prevention area B is blocked by the transparent sound insulating plate 4, and in the noise generation area A, The perforated plate 14 of the sound absorbing body 5 absorbs low frequency components of noise, and the porous sound absorbing material 15 of the sound absorbing body 5
Absorbs high frequency components of noise, so that the noise in the noise generation area A is also reduced.

Moreover, since the transparent sound insulating plate 4 of the sound insulating panel 2 is transparent, the outside can be seen from the road 1 side, the feeling of blockage and pressure inside the road 1 can be alleviated, and the scenery from outside the road 1 can be reduced. It will not be damaged and will be in harmony with the surrounding environment.

FIG. 4 shows the results of measuring the sound absorption coefficient by the reverberation chamber method for the transparent sound absorbing type sound insulation panel 2 of the above example.

As is clear with reference to FIG. 4, the sound insulation panel 2 has the sound absorption property 5 having high sound absorption property attached to the surface of the frame 3 in which the transparent sound insulation plate 4 having no sound absorption property is fitted. The apparent sound absorption characteristics of are significantly improved.

Next, an embodiment of the related invention will be described with reference to FIGS.

In the embodiment of FIGS. 5 and 6, in the above-mentioned transparent sound absorbing type noise panel 2, the protective net 17 and the structure related thereto are added.

That is, on the rear surface side of the frame 3, the push plate 12 has
A large number of locking holes 18 are formed at appropriate intervals,
In addition, a protective net 17 arranged so as to cover the back surface of the transparent sound insulating plate 4 is supported via an elastic support tool 19 that is locked across the protective net 17 and the locking holes 18.

The protective net 17 is made of a tough material such as metal such as stainless steel and synthetic resin such as aramid fiber, and the size of the mesh is about 10 cm square.

When the size of the mesh of the protective net 17 is this size, the transparency of the transparent sound insulation plate 4 is hardly impeded.

The elastic supporting member 19 is made of a material having elasticity, and as an example thereof, a coil spring as shown is adopted.

The transparent sound absorbing type sound insulation panel 2 of FIGS. 5 and 6 is also shown in FIGS.
Similar to the case of FIG. 3, it is built on both sides of the road 1 to form a predetermined soundproof wall, and the above-described soundproof effect is achieved.

In general, laminated glass has a characteristic that it is difficult to scatter when damaged, but when the transparent sound insulating plate 4 of the sound insulating panel 2 is damaged due to an unexpected situation in the above-mentioned use state, or during cleaning of the transparent sound insulating plate 4. If it is accidentally damaged, the protective net 17 prevents the fragments of the transparent sound insulating plate 4 from falling off, and in particular, prevents the fragments from falling outside the road 1, so that the transparent sound insulating plate 4 is prevented. Prevent the occurrence of secondary disasters caused by damage to the building.

In addition, since the protective net 17 is elastically supported via the elastic support 19, the protective net 17 does not hang down even after long-term use, and the appearance can be maintained for a long time. In the elastically supported state, the shock when the damaged transparent sound insulating plate 4 is received is mitigated, so the protective net 17 itself is also hard to be damaged.

"Effect of device" The soundproof wall according to the specific device (Claim 1) has the following effects.

The transparent sound absorbing type sound insulation panel has sound insulation properties that depend on the transparent sound insulation plate (laminated glass), transparency, and sound absorption properties that depend on the sound absorber on the surface of the horizontal cross section of the frame. Since it has a sound absorption property depending on, it exhibits a sound insulation effect, a sound absorption effect, and a see-through property based on these, and is in harmony with the surrounding environment.

On the surface side of the transparent sound absorbing type sound insulation panel, since the entire circumference of the transparent sound insulation plate is surrounded by the sound absorbers, it is possible to transparently insulate the sound source that is blocked by the transparent sound insulation plate and is about to be scattered to another place. The sound absorbing effect can be further enhanced by the sound absorbing function which can be absorbed from the entire circumference of the plate and thus cooperates with the sound insulating function.

In order to make effective use of the surface of the horizontal frame of the transparent sound absorbing type sound insulation panel and the surface of the support, a sound absorber is attached to these surfaces, so there is no need to intervene in a special sound absorbing area, and therefore The transparent sound insulation plate can be enlarged to increase the see-through area by the amount that does not require the sound absorbing area.

A transparent sound-absorbing type sound-insulating panel can be obtained by simply combining a transparent sound-insulating plate and a frame, and a sound-proof wall can be constructed simply by building the transparent sound-absorbing type sound-insulating between pillars.
It is possible to satisfy simple workability and low cost.

The soundproof wall according to the related invention (Claim 2) has the following effects in addition to the above effects.

Since the protective net is installed on the back side of the transparent sound insulating plate, even if the transparent sound insulating plate is damaged in an unexpected situation, the protective net prevents the damaged object from falling. Therefore, even in the case of such an unexpected situation, it is possible to ensure safety without endangering the surroundings.

Since the protective net is attached to the transparent sound absorbing type sound insulation panel via the elastic support, not only can the tension of the protective net be given a certain level, but also the impact when the damaged transparent sound insulation plate is received by the protective net is mitigated. To be able to
Therefore, the protective net itself is less likely to be damaged.

[Brief description of drawings]

FIG. 1 is a front view schematically showing an embodiment of a transparent sound absorbing type sound insulation panel according to a specific invention together with an example of its use, and FIGS. 2 and 3 are longitudinal sectional views and transverse sectional views of essential portions of the same. FIG. 4 is an explanatory view showing the noise absorption characteristics of the transparent sound absorbing type sound insulation panel according to the specific invention, and FIG. 5 is a longitudinal sectional view showing an embodiment of the transparent sound absorbing type sound insulation panel according to the related invention, FIG. [Fig. 3] is a perspective view of an essential part of the above. 1 …… Road 2 …… Transparent sound absorbing type sound insulation panel 3 …… Frame 4 …… Transparent sound insulation plate 5 …… Sound absorber 6 …… Horizontal cross section 7 …… Vertical cross section 8 …… Step section 9 …… Fixing piece 10 …… Grooved piece 11 …… Elastic packing 12 …… Pressing plate 13 …… Stopper 14 …… Perforated plate 15 …… Porous sound absorbing material 16 …… Post 17 …… Protective net 18 …… Locking hole 19… ... Elastic support

Claims (2)

[Scope of utility model registration request] 1. A transparent sound absorbing type sound insulation panel comprising a transparent sound insulation plate made of laminated glass, a frame surrounding the transparent sound insulation plate, a perforated plate and a perforated plate attached to the surface of the horizontal cross section of the frame. It consists of a sound absorber with a sound absorbing material,
Moreover, the perforated plate, a sound absorbing body provided with a porous sound absorbing material is also attached to the surface of the pillar, and the transparent sound absorbing type sound insulation panel is erected at an interval corresponding to the panel width. A soundproof wall characterized by being fitted between them. 2. A transparent sound-absorbing sound insulation panel comprising a transparent sound insulation plate made of laminated glass, a frame surrounding the transparent sound insulation plate, a perforated plate attached to the surface of the horizontal cross section of the frame, and a perforated plate. It consists of a sound absorber with a sound absorbing material,
Moreover, the perforated plate, a sound absorbing body provided with a porous sound absorbing material is also attached to the surface of the pillar, and the transparent sound absorbing type sound insulation panel is erected at an interval corresponding to the panel width. A soundproof wall, which is fitted between and has a protective net disposed on the back surface side of the transparent sound insulating plate attached to the transparent sound absorbing type sound insulating panel via an elastic support.