JP3508548B2 - Sound insulation wall panel and sound insulation wall structure using the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound insulation wall structure capable of exhibiting a sound insulation effect while maintaining air permeability, and a sound insulation wall panel constituting the same.

[0002]

2. Description of the Related Art In some cases, for example, an undercover of an engine room of an automobile or an air intake port member of an air conditioner requires ventilation as well as a sound insulation effect. As a conventional sound insulation wall structure having such a function, Japanese Patent Laid-Open No. 7-1
There is one disclosed in Japanese Patent No. 75485, and its configuration is shown in FIGS. 23 and 24.

In FIGS. 23 and 24, the sound insulation wall 1 has two sound insulation plates 2 and 3 facing each other with a space therebetween.
A plurality of holes 2a are formed in the sound insulating plate 2 at positions facing each other.
2b, 3a and 3b are provided so as to penetrate therethrough. Hole 2a,
Each of the sound insulating plates 2 and 3 is communicated with a protruding cylindrical portion 4 protruding toward the inner surface side of the sound insulating plate 2, and a slit 5 is formed between the tip end faces of the protruding cylindrical portions 4 facing each other. This slit 5
The holes 2a and 3a communicate with the space 6 between the sound insulation plates 2 and 3. Further, the other holes 2b and 3b are communicated with a cylindrical portion 7 provided over the entire area between the sound insulation plates 2 and 3, and the cylindrical portion 7 has an inner surface of substantially the same cross section as the holes 2b and 3b.

That is, as shown in FIG. 24, between the holes 2a and 3a of the sound insulation wall 1, the air 2 of the holes 2a and 3a and the protruding cylindrical portion 4 is provided.
The air mass m and the air spring 9 in the air layer of the space 6 constitute a two-degree-of-freedom vibration type ventilation hole A. In addition, between the holes 2b and 3b of the sound insulation wall 1, the holes 2b and 3b and the air 10 as a whole of the tubular portion 7 act as an air mass M, and are configured as one-degree-of-freedom vibration type ventilation holes B.

In the above structure, when sound is incident from one side of the sound insulation wall 1, this incident wave is transmitted to the other side through the ventilation holes A and B. Here, when the frequency of the incident wave to the hole 2a exceeds the resonance frequency of the vibration system, the phase of the transmitted wave is inverted by 180 degrees and output. On the other hand, since the one-degree-of-freedom vibration type vent hole B has no resonance point, the transmitted wave is output in the same phase as the incident wave. Therefore, both transmitted waves are reduced by the interference effect.

As another conventional sound insulation wall structure, there is one disclosed in Japanese Patent Application No. 8-10360, which is shown in FIG.
5 and FIG. 26 show the configuration.

25 and 26, the same components as those of the other conventional example and the above-mentioned conventional example are designated by the same reference numerals in the drawings, and the description thereof will be omitted. Only different components will be described. That is, in the other conventional example, the tubular portion 7 has two members 7
a and 7b, and a plurality of holes 11 are provided at the abutting portions of each other.

As shown in FIG. 26, the holes 2a, 3a and the inside of the cylindrical portion 7 are partitioned in a vibration space by a virtual partition wall 12, and the entire air 13 in the virtual partition wall 12 has a one-degree-of-freedom vibration system. The air mass of the air 14 outside the virtual partition wall 12 and the air spring 15 of the air layer in the space 6 constitute a two-degree-of-freedom vibration system, thereby forming a composite vibration type ventilation hole C. That is, the incident wave to the hole 2b is shielded by the transmitted wave from the one-degree-of-freedom vibration system and the transmitted wave from the two-degree-of-freedom vibration system interfering and canceling each other.

[0009]

However, in each of the conventional sound insulation wall structures described above, a large number of holes 2a, 2b, 3a, 3 are provided.
Since the sound insulation wall 1 provided with b and the protruding cylindrical portion 4 and the like is integrally molded with a mold, the mold is complicated and expensive. In addition, since the integrated sound insulation wall 1 has a specific sound insulation frequency characteristic, if the frequency characteristics of the noise source to be applied are different, a separate mold must be manufactured to make another sound insulation wall 1. There wasn't. Further, in the case of producing a sound insulation wall having a size and shape according to the noise source, it is necessary to cut and paste the integrally formed sound insulation wall for use or separately manufacture a mold.

Therefore, the present invention provides a sound insulating wall panel and a sound insulating wall structure which can be manufactured by a mold having a simple structure to reduce the cost, and the size, shape and sound insulating frequency characteristics can be changed according to the noise source. The challenge is to provide.

[0011]

According to a first aspect of the present invention, two sound insulating plate pieces facing each other with a space, a side plate covering a side surface between the two sound insulating plate pieces, and the two sound insulating plates are provided. A panel connected state having a space surrounded by the plate piece and the side plate, an opening provided in at least one of the two sound insulating plate pieces and the side plate, and communicating the space with the outside. There
When the opening is provided in the two sound insulating plate pieces, a ventilation hole is formed as a sound insulating wall between the opposing openings, and the side plate and one or more sound insulating wall panels in the periphery are provided. When another vent hole is formed as a sound insulation wall between the side plate and the side plate and the opening is provided in the side plate, between the side plate and one or more surrounding sound insulation panel side plates. It is characterized in that a ventilation hole is formed as a sound insulation wall.

Therefore, in a sound insulation wall having a continuous structure,
The sound insulation wall piece, the side plate, the opening, which is the minimum element, and the mold that can form the part necessary for forming this may be configured,
Also, the number of sound insulation wall panels to be connected, how to connect (position),
The presence or absence of a ventilation hole between adjacent sound insulation wall panels and the size of the hole can be freely changed.

A second aspect of the present invention is the sound insulation wall panel according to the first aspect, wherein the openings provided in the two sound insulation plate pieces project toward the inner surface of each of the sound insulation plate pieces. Is communicated with each of the projecting cylinders having an inner surface of substantially the same cross section as the above, and is communicated with the space through the slit between the tip end faces of the projecting cylinders facing each other. There is a two-degree-of-freedom vibration type ventilation hole between the openings of the two sound insulating plate pieces, and
It is characterized in that a one-degree-of-freedom vibration type ventilation hole is constituted by the groove portion of the side plate and the groove portion of the side plate of the sound insulation wall panel adjacent to the groove.

Therefore, in addition to the operation described in claim 1, it is sufficient to add a structure in which a groove is formed in the side plate as the structure of the mold. Further, in the panel connected state, the ventilation hole of the two-degree-of-freedom vibration is provided. A one-degree-of-freedom vibration type ventilation hole is configured.

According to a third aspect of the present invention, in the sound insulation wall panel according to the first aspect, holes are provided in the two sound insulation plate pieces, and each of the holes extends over the entire area between the two sound insulation plate pieces. Is provided,
Is communicated with a cylindrical portion having an inner surface of substantially the same cross section as the hole,
The opening provided in the side plate is configured as a groove provided in the side plate, and in the panel connected state, a ventilation hole of one degree of freedom vibration type is configured between the holes of the two sound insulating plate pieces. Further, it is characterized in that a two-degree-of-freedom vibration type ventilation hole is constituted by the groove of the side plate and the groove of the side plate of the sound insulation wall panel adjacent to the groove.

Therefore, in addition to the operation described in claim 1, it is sufficient to add a structure in which a hole and a tubular portion are formed between the sound insulating plate pieces to the two sound insulating plate pieces as the structure of the mold, and the panel is connected. Therefore, a two-degree-of-freedom vibration type ventilation hole and a one-degree-of-freedom vibration type ventilation hole are configured.

According to a fourth aspect of the invention, there is provided the sound insulation wall panel according to the first aspect, wherein the openings provided in the two sound insulation plate pieces project toward the inner surface of each of the sound insulation plate pieces. The two sound insulations are communicated with each other in the protruding cylindrical portion having an inner surface of substantially the same cross-section as above, and are communicated with the space through the slit between the tip end faces of the opposing protruding cylindrical portions in the panel connected state. A two-degree-of-freedom vibration type ventilation hole is formed between the openings of the plate pieces, and a one-degree-of-freedom vibration type ventilation hole is formed by a gap between the side plate and one or more surrounding side walls of the sound insulation wall panel. It is characterized by

Therefore, in addition to the function described in claim 1, in the panel connection state, the two-degree-of-freedom vibration type ventilation hole and the one-degree-of-freedom vibration type ventilation hole are formed, and the side plate and the surrounding sound insulation wall panel are formed. The distance between the side plate and the side plate can be changed to freely change the gap.

According to a fifth aspect of the present invention, there is provided the sound insulation wall panel according to the first aspect, wherein the opening provided in the side plate is formed of a hole, and when the panel is connected, the side plate and one of the surroundings are formed. It is characterized in that a compound vibration type ventilation hole is constituted by a gap between two or more side walls of the sound insulation wall panel.

Therefore, in addition to the function of the first aspect, the compound vibration type vent hole is formed in the panel connected state.

A sixth aspect of the present invention is the sound insulation wall panel according to the first to fifth aspects, wherein the side plate is provided with a connecting means.

Therefore, in addition to the actions of claims 1 to 5,
Panels can be connected using connecting means.

A seventh aspect of the present invention is the sound insulation wall panel according to the sixth aspect, characterized in that the connecting means are joint type rotatable with respect to each other.

Therefore, in addition to the operation of the sixth aspect, the connecting direction of each sound insulation wall panel can be freely changed.

The invention according to claim 8 is the sound insulation wall panel according to any one of claims 1 to 7, wherein a sealing member is provided on the side plate,
In the panel connected state, the vent member is characterized in that the sealing member of the side plate is brought into contact with the side plate or the sealing member of the side plate of one or more sound insulation wall panels adjacent to the sealing member.

Therefore, in addition to the actions of claims 1 to 7,
The ventilation hole is blocked by the sealing member.

A ninth aspect of the present invention is the sound insulation wall panel according to the first to eighth aspects, wherein each of the sound insulation plate pieces and the side plate has a corner portion, and when a hole of the sound insulation plate piece is provided, a corner around the hole. When the groove portion of the side plate is provided, the corner portion around the groove portion is formed into a curved shape.

Therefore, in addition to the actions of claims 1 to 8,
No separation of airflow through the vents.

The invention of claim 10 is the sound insulation wall panel according to any one of claims 1 to 9, wherein the shape of the entire side surface is polygonal.

Therefore, in addition to the actions of claims 1 to 9,
Since the side surfaces are polygonal, the sound insulation wall panels can be easily and regularly arranged.

The invention according to claim 11 is the sound insulation wall panel according to any one of claims 1 to 9, characterized in that the shape of the entire side surface is cylindrical.

Therefore, in addition to the actions of claims 1 to 9,
Since the side surfaces are cylindrical, the degree of freedom in arranging the sound insulation wall panels is high.

According to a twelfth aspect of the present invention, there are provided two sound insulating plate pieces facing each other with a gap, a side plate covering a side surface between the two sound insulating plate pieces, the two sound insulating plate pieces and the side plate. A plurality of sound insulation wall panels having an enclosed space portion and an opening portion provided in at least one of the two sound insulation plate pieces and the side plate and communicating the space portion with the outside are provided. When the sound insulation wall panels are connected and the opening is provided in the two sound insulation plate pieces, a ventilation hole as a sound insulation wall is formed between the opposing openings, and the side plate and one of the surroundings are formed. When another vent hole as a sound insulating wall is formed between the side plate of two or more sound insulating wall panels, and the opening is provided in the side plate, one or more sound insulating wall panels around the side plate and the surroundings. Vents were constructed as sound insulation walls between the side plates And it features.

Therefore, in a sound insulation wall having a continuous structure,
The sound insulation plate piece which is the minimum element, the side plate, the opening, and the mold that can form the part necessary for forming this may be formed,
Also, the number of sound insulation panel panels to be connected, how to connect them (position),
The presence or absence of a ventilation hole between adjacent sound insulation wall panels and the size of the hole can be freely changed.

The thirteenth aspect of the present invention is the sound insulating wall structure according to the twelfth aspect, wherein the openings provided in the two sound insulating plate pieces project toward the inner surface of each of the sound insulating plate pieces. Is communicated with each of the projecting cylinders having an inner surface of substantially the same cross section as the above, and is communicated with the space through the slit between the tip end faces of the opposing projecting cylinders, the side plate is provided with the groove, and the panel is connected. Then, a two-degree-of-freedom vibration type ventilation hole is formed between the openings of the two sound insulating plate pieces,
Further, it is characterized in that a one-degree-of-freedom vibration type vent hole is constituted by the groove portion of the side plate and the groove portion of the side plate of the sound insulation wall panel adjacent to the groove.

Therefore, in addition to the function of the twelfth aspect, it is only necessary to add a structure in which a groove is formed in the side plate as the structure of the mold, and when the panel is connected, the ventilation hole of the two-degree-of-freedom vibration is provided. A one-degree-of-freedom vibration type ventilation hole is configured.

According to a fourteenth aspect of the present invention, in the sound insulating wall structure according to the twelfth aspect, holes are provided in the two sound insulating plate pieces, and each hole is provided over the entire area between the two sound insulating plate pieces. Is connected to a cylindrical portion having an inner surface of substantially the same cross-section as the hole, and the opening provided in the side plate is configured as a groove provided in the side plate. Ventilation holes of 1 degree of freedom vibration are constructed between the holes of the plate piece,
Further, it is characterized in that a two-degree-of-freedom vibration type ventilation hole is constituted by the groove of the side plate and the groove of the side plate of the sound insulation wall panel adjacent to the groove.

Therefore, in addition to the effect of the twelfth aspect, it is sufficient to add a structure in which a hole and a tubular portion are formed between the sound insulating plates to the two sound insulating plates as the structure of the mold, and the panel is connected. Thus, a 2-DOF vibration type ventilation hole and a 1-DOF vibration type ventilation hole are configured.

According to a fifteenth aspect of the present invention, in the sound insulation wall structure according to the twelfth aspect, the openings provided in the two sound insulation plate pieces project from the inner surfaces of the sound insulation plate pieces. The two sound insulations are communicated with each other in the protruding cylindrical portion having an inner surface of substantially the same cross section, and are communicated with the space through the slit between the tip end faces of the opposing protruding cylindrical portions in the panel connected state. A two-degree-of-freedom vibration type ventilation hole is formed between the openings of the plate pieces, and a one-degree-of-freedom vibration type ventilation hole is formed by a gap between the side plate and one or more surrounding side walls of the sound insulation wall panel. It is characterized by that.

Therefore, in addition to the effects of the twelfth aspect, the sound insulation wall panel adjacent to the side plate is formed in the panel connected state with the two-degree-of-freedom vibration type ventilation hole and the one-degree-of-freedom vibration type ventilation hole. The distance between the side plate and the side plate can be changed to freely change the gap.

According to a sixteenth aspect of the present invention, in the sound insulation wall structure according to the twelfth aspect, the opening provided in the side plate is formed of a hole, and when the panel is connected, the side plate and the surrounding one or It is characterized in that a compound vibration type ventilation hole is constituted by a gap between two or more sound insulation wall panel side plates.

Therefore, in addition to the effect of the twelfth aspect, a combined vibration type vent hole is formed in the panel connected state.

A seventeenth aspect of the present invention is the sound insulating wall structure according to the twelfth to sixteenth aspects, wherein the plurality of connected sound insulating wall panels are surrounded by a frame.

Therefore, in addition to the effects of the twelfth to sixteenth aspects, the outer periphery of the sound insulation wall is surrounded by the frame body, and the frame body and the side surface of the sound insulation wall panel also constitute a one-degree-of-freedom vibration type ventilation hole.

[0045]

According to the first aspect of the present invention, since the sound insulating wall having a continuous structure can be formed with a mold capable of forming a sound insulating plate piece, a side plate, an opening, etc., which are the minimum elements, The structure of the mold is simple and the cost is reduced, and the number of sound insulation wall panels to be connected, the connection method (position), the presence / absence of ventilation holes between adjacent sound insulation wall panels, and the size of the hole can be freely changed. In addition, it is possible to configure a sound insulation wall having a size, shape, and sound insulation frequency characteristics according to the noise source, and it is not necessary to manufacture a mold for each noise source, which also reduces costs.

According to the invention of claim 2, in addition to the effect of claim 1, since it is only necessary to form the groove portion in the side plate as the structure of the mold, the structure of the mold is simple and the cost is reduced. In the panel-connected state, the two-degree-of-freedom vibration type ventilation hole and the one-degree-of-freedom vibration type ventilation hole are configured, so that the frequency of the incident wave is equal to or higher than the resonance point of the two-degree-of-freedom vibration system. The phases are inverted and both transmitted waves are attenuated by mutual interference.

According to the invention of claim 3, in addition to the effect of claim 1, a structure of forming a hole and a tubular portion between the sound insulating plate pieces may be added to the two sound insulating plate pieces as the structure of the mold. , The structure of the mold is simple and the cost is reduced. Moreover, in the panel connection state, since the ventilation hole of 2 degrees of freedom vibration type and the ventilation hole of 1 degrees of freedom vibration type are configured, the frequency of the incident wave is 2 The phase of the transmitted wave is inverted at a frequency equal to or higher than the resonance point of the vibration system with degrees of freedom, and both transmitted waves are attenuated by mutual interference.

According to the invention of claim 4, in addition to the effect of claim 1, since the ventilation hole of the two-degree-of-freedom vibration type and the ventilation hole of the one-degree-of-freedom vibration are formed in the panel connected state, When the frequency of the wave is equal to or higher than the resonance point of the two-degree-of-freedom vibration system, the phase of the transmitted wave is inverted and both transmitted waves are reduced in noise due to mutual interference, and the distance between the side plate and the side plate of the sound insulation wall panel adjacent to the side plate. Since the gap can be freely changed by changing the, the opening ratio of the 1-degree-of-freedom vibration type ventilation hole in the sound insulation wall, and
The opening area ratio of the 1-degree-of-freedom vibration type and the 2-degree-of-freedom vibration type ventilation hole can be changed, and the frequency characteristics of sound insulation can be tuned.

According to the invention of claim 5, in addition to the effect of claim 1, since the compound vibration type ventilation hole is formed in the panel connected state, the frequency of the incident wave is the resonance of the vibration system with two degrees of freedom. The phase of the transmitted wave is inverted at frequencies above the point, and the transmitted wave is attenuated by mutual interference.

According to the invention of claim 6, in addition to the effects of claims 1 to 5, the panel can be connected using the connecting means.
Connection work can be done accurately and easily.

According to the invention of claim 7, in addition to the effect of claim 6, since the direction of each sound insulation wall panel can be freely changed, each sound insulation wall panel can be arranged vertically with respect to the noise source, and the maximum sound insulation can be achieved. The effect is obtained.

According to the invention of claim 8, in addition to the effects of claims 1 to 7, since the ventilation hole is shielded by the seal member, the ventilation hole is spatially prevented from leaking and the sound insulation characteristic is improved.

According to the ninth aspect of the invention, in addition to the effects of the first to eighth aspects, the separation of the air flow passing through the ventilation holes does not occur, so the ventilation resistance is small and the ventilation is improved.

According to the tenth aspect of the invention, in addition to the effects of the first to ninth aspects, since the side surfaces are polygonal, the sound insulation wall panels can be easily arranged regularly, so that the connecting work can be performed quickly. You can

In the eleventh aspect of the invention, in addition to the effects of the first to ninth aspects, since the side surfaces are cylindrical, the degree of freedom in arranging the sound insulation wall panels is high, and therefore the shape variation of the sound insulation wall as a whole is compatible. Is excellent.

According to the twelfth aspect of the present invention, there is provided a sound insulating wall having a continuous structure, in which a sound insulating plate piece, a side plate, an opening, which are the minimum elements of the sound insulating wall, and a die capable of forming a portion necessary for forming the sound insulating plate are provided. Since the structure of the mold is simple and the cost is reduced, the number of sound insulation wall panels to be connected, the method of connection, the presence / absence of ventilation holes between surrounding sound insulation wall panels, and the size of the hole can be freely changed. Therefore, it is possible to configure a sound insulation wall having a size, shape, and sound insulation frequency characteristics according to the noise source,
There is no need to manufacture a mold for each noise source, which also reduces costs.

According to the thirteenth aspect of the invention, in addition to the effect of the twelfth aspect, since it is only necessary to add a configuration for forming the groove portion to the side plate as the configuration of the die, the die configuration is simple and the cost is reduced, and In the panel connected state, since the 2-DOF vibration type ventilation hole and the 1-DOF vibration type ventilation hole are configured, the frequency of the incident wave is equal to or higher than the resonance point of the 2-DOF vibration system. The phase of is reversed and both transmitted waves are reduced by mutual interference.

According to the fourteenth aspect of the present invention, in addition to the effect of the twelfth aspect, it is only necessary to add a structure in which holes and a tubular portion are formed between the sound insulating plate pieces to the two sound insulating plate pieces as the structure of the mold. , The structure of the mold is simple and the cost is reduced. Moreover, in the panel connection state, since the ventilation hole of 2 degrees of freedom vibration type and the ventilation hole of 1 degrees of freedom vibration type are configured, the frequency of the incident wave is 2
The phase of the transmitted wave is inverted at a frequency equal to or higher than the resonance point of the vibration system with degrees of freedom, and both transmitted waves are attenuated by mutual interference.

According to the fifteenth aspect of the invention, in addition to the effect of the twelfth aspect, in the panel connected state, the two-degree-of-freedom vibration type ventilation hole and the one-degree-of-freedom vibration type ventilation hole are formed.
When the frequency of the incident wave is equal to or higher than the resonance point of the two-degree-of-freedom vibration system, the phase of the transmitted wave is inverted, and both transmitted waves are reduced in noise due to mutual interference. Since the distance (distance) can be changed to freely change the gap, the opening ratio of the 1-DOF vibration type ventilation hole in the sound insulation wall and the opening area of the 1-DOF vibration type and 2-DOF vibration type ventilation holes The ratio can be changed and the frequency characteristics of sound insulation can be tuned.

According to the sixteenth aspect of the invention, in addition to the effect of the twelfth aspect, since the compound vibration type ventilation hole is formed in the panel connected state, the frequency of the incident wave is the resonance of the two-degree-of-freedom vibration system. The phase of the transmitted wave is inverted at frequencies above the point, and the transmitted wave is attenuated by mutual interference.

In the seventeenth invention, the twelfth to sixteenth inventions are provided.
In addition to the effects described, since the outer periphery of the sound insulation wall is surrounded by the frame body, the structure becomes strong, and the frame body and the side surface of the sound insulation wall panel also constitute a 1-degree-of-freedom vibration type ventilation hole, which allows the transmission of light. Can contribute to wave interference.

[0062]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1A is a perspective view of a sound insulation wall panel according to a first embodiment of the present invention, and FIG. 1B is a sectional view taken along line AA of FIG. FIG. 2C is a plan view of the sound insulation wall using the sound insulation wall panel, and FIG. 2 is a perspective view of the sound insulation wall with a frame attached around the sound insulation wall.

1 (a) and 1 (b), the sound insulation wall panel 20 includes two sound insulation plate pieces 2 facing each other in parallel with a space.
1, and the entire side surface between the two sound insulating plate pieces 21 is covered with a side plate 22. The sound insulation wall panel 20 has a cubic outer shape, and has two sound insulation plate pieces 21 and side plates 22.
A space portion 23 is formed inside by being surrounded by and.

Circular holes 24, which are openings, are provided at the opposite positions of the two sound insulating plate pieces 21, respectively.
Respectively communicate with the inside of a protruding cylindrical portion 25 having an inner surface of substantially the same cross section as the circular hole 24 protruding toward the inner surface of the sound insulating plate piece 21. A slit 26, which is an opening, is formed between the tip end faces of the projecting cylindrical portions 25 facing each other, and the circular hole 24 is configured to communicate with the space portion 23 through the slit 26. In addition, a semi-cylindrical groove 27 is formed on the four sides of the side plate 22.
Are provided respectively. In addition, in the first embodiment, the groove 27 has a semi-cylindrical shape, but the shape and the number of the groove 27 are not limited.

As shown in FIG. 1 (c), the plurality of sound insulation wall panels 20 having the above-described structure are connected to each other by connecting the side plates 22 in the vertical and horizontal directions in a close contact state by an appropriate connecting means such as an adhesive. Is configured. In the sound insulation wall 1 configured in this way, the two sound insulation plate pieces 21 of each sound insulation wall panel 20 become two sound insulation plates as a whole, and between the circular holes 24 of each sound insulation plate piece 21, the circular hole 24 and the protruding cylinder. The air mass of the air in the portion 25 and the air spring in the air layer of the space portion 23 constitute a two-degree-of-freedom vibration type ventilation hole A.

Further, the ventilation holes formed by both the groove portions 27 of the sound insulation wall panels 20 adjacent to each other are configured as the one-degree-of-freedom vibration type ventilation hole B in which the entire air in the groove portion 27 acts as an air mass. Therefore, the transmitted wave is reduced by the same operation as the above-mentioned conventional example. Further, the side plates 22 of the adjacent sound insulation wall panels 20 may be separated from each other and connected.

The sound insulation wall panel 20 is formed by a mold, and the structure of this mold is a sound insulation wall having a continuous structure, and the two minimum sound insulation plate pieces 21 and the side plates 2 are the minimum elements.
2, as long as the circular hole 24 that is the opening and the part associated therewith can be molded, the structure is simple and the cost of the mold can be reduced. Also, the number of sound insulation wall panels 20 connected,
Since the connection method (position) can be changed, it is possible to configure a sound insulation wall having a size, shape, and sound insulation frequency characteristics that match the noise source, eliminating the need to manufacture a mold for each noise source, which also reduces costs. It will be reduced. Furthermore, since the sound insulation wall panel 20 has a cubic outer shape and the side surfaces are polygonal, the sound insulation wall panels 20 can be easily and regularly arranged, so that the connecting work can be performed quickly.

As shown in FIG. 2, the outer periphery of the connected sound insulation wall panels 20 is surrounded by a frame 28. With this structure, the structure becomes strong, and since the frame body 28 and the groove portion 27 on the side surface of the sound insulation wall panel 20 also form the one-degree-of-freedom vibration type ventilation hole B ′, the interference of the transmitted wave is generated. Can contribute to.

(Second Embodiment) FIG. 3 is a perspective view of a sound insulation wall panel 20 according to a second embodiment of the present invention. In FIG. 3, in the sound insulation wall panel 20 according to the second embodiment, the same components as those of the first embodiment are designated by the same reference numerals in the drawing, and the description thereof will be omitted, and only different components will be described. .

That is, the sound insulation wall panel 2 according to the second embodiment.
The side plate 22 of No. 0 is provided with an engaging groove portion 29a and an engaging protrusion portion 29b which are connecting means. The sound insulation wall panel 20 can be connected by engaging the engagement groove portion 29a of one sound insulation wall panel 20 and the engagement protrusion portion 29b of the other sound insulation wall panel 20. Since the panels can be connected using the connecting means in this manner, the connecting work can be performed accurately and easily.

Although the connecting means of the second embodiment is the engaging groove portion 29a and the engaging protrusion portion 29b, the sound insulation wall panel 2
Any means that can connect 0s can be used.

(Third Embodiment) FIG. 4 is a perspective view of a sound insulation wall panel according to a third embodiment of the present invention, and FIG. 5 is a BB line in FIG.
FIG. 6 is a plan view of the sound insulation wall using the sound insulation wall panel.

In FIGS. 4 and 5, the sound insulation wall panel 20 is shown.
Has two sound insulating plate pieces 21 facing each other in parallel at intervals, and the entire side surface between the two sound insulating plate pieces 21 is covered with a side plate 22. The sound insulation wall panel 20 has a cubic outer shape, and is surrounded by two sound insulation plate pieces 21 and side plates 22 to form a space 23 inside.

A hole 30 is provided at a position where the two sound insulating plate pieces 21 face each other.
The holes 30 are provided over the entire area between the sound insulating plate pieces 21, and communicate with a cylindrical portion 31 having an inner surface of substantially the same cross section as the holes 30. Also, the side plate 22
A semi-cylindrical groove portion 27 is provided on each of the four surfaces, and a slit-shaped opening 32 is provided in each groove portion 27. The space 23 communicates with the outside through the opening 32.

As shown in FIG. 6, the sound-insulating wall 1 is constructed by connecting the plurality of sound-insulating wall panels 20 having the above-described structure in the vertical and horizontal directions with their side plates 22 in close contact with each other by an appropriate connecting means such as an adhesive. It In the sound insulating wall 1 configured in this way, the two sound insulating plate pieces 21 of each sound insulating wall panel 20 become two sound insulating plates as a whole, and the space between the holes 30 of each sound insulating plate piece 21 is
The entire air in the hole 30 and the cylindrical portion 31 acts as an air mass, and is configured as a one-degree-of-freedom vibration type ventilation hole B.
Further, the ventilation holes formed by both the groove portions 27 of the sound insulation wall panel 20 adjacent to each other are the air mass of the air in the groove portion 27 and the space portion 2.
It is configured as a two-degree-of-freedom vibration type ventilation hole A with the air springs of the three air layers. Therefore, the transmitted wave is reduced by the same operation as that of the conventional example and the first embodiment. The side plates 22 of the adjacent sound insulation wall panels 20 may be separated from each other and connected.

Also in the third embodiment, as in the first embodiment, the mold of the sound insulation wall panel 20 has a simple structure and the cost of the mold can be reduced, and the number of sound insulation wall panels 20 to be connected and the number of the sound insulation wall panels 20 to be connected can be reduced. Since the method (position) can be changed, there is an effect that a sound insulation wall having a size, a shape and a sound insulation frequency characteristic according to the noise source can be configured.

(Fourth Embodiment) FIG. 7 is a perspective view of a sound insulation wall panel 20 according to a fourth embodiment of the present invention, FIG. 8 is a plan view of a sound insulation wall using the sound insulation wall panel, and FIG. 9 is a frame body around the sound insulation wall. It is a top view of the state which attached. In order to clearly show the connected state in FIGS. 8 and 9, the sound insulating plate piece 21 of the sound insulating wall panel 20 is thickly painted.

In FIG. 7, the sound insulation wall panel 20 of the fourth embodiment is different from that of the first embodiment in the side plate 2.
Since the other configurations are the same except that the groove 27 is not provided in 2, the same reference numerals are given in the drawings and the description thereof will be omitted.

As shown in FIG. 8, in the plurality of sound insulation wall panels 20 having the above-described structure, the side plates 22 are connected to each other in the vertical and horizontal directions by a suitable connecting means such as an adhesive while the sound insulation wall panels 20 are connected to each other. The sound insulation wall 1 is configured by thinning and connecting every other space. In the sound insulation wall 1 configured in this way, the two sound insulation plate pieces 21 of each sound insulation wall panel 20 become two sound insulation plates as a whole, and between the circular holes 24 of each sound insulation plate piece 21, the circular hole 24 and the protruding cylinder. The air mass of the air in the portion 25 and the air spring in the air layer of the space portion 23 constitute a two-degree-of-freedom vibration type ventilation hole A. Further, the gap 33 formed by thinning out the sound insulation wall panel 20 acts as the air mass of the entire air in the gap 33, and is configured as a one-degree-of-freedom vibration type ventilation hole B. Therefore, the transmitted wave is reduced by the same operation as the above-mentioned conventional example.

As shown in FIG. 9, the plurality of sound insulation wall panels 20 having the above structure are connected to each other with a certain distance d1 in the lateral direction to form the sound insulation wall 1. Distance d1
The opening ratio of the 1-DOF vibration type ventilation hole B in the sound insulation wall 1 and the opening area ratio of the 1-DOF vibration type and 2-DOF vibration type ventilation holes can be changed by changing Can be tuned.

Further, the outer periphery of the connected sound insulation wall panels 20 is surrounded by a frame 28. With such a structure, the structure becomes strong, and the frame body 28 and the side surface of the sound insulation wall panel 20 also form the one-degree-of-freedom vibration type ventilation holes B and B ′, so that the interference of the transmitted wave is prevented. Can contribute.

(Fifth Embodiment) FIG. 10 is a perspective view of a sound insulation wall panel 20 according to a fifth embodiment of the present invention, and FIGS. 11 and 12 are plan views of a sound insulation wall using the sound insulation wall panel. In order to clearly show the connected state in FIGS. 11 and 12, the sound insulating plate piece 21 of the sound insulating wall panel 20 is thickly painted.

In FIG. 10, the sound insulation wall panel 20 according to the fifth embodiment is different from that of the fourth embodiment, except that the side plate 22 of the sound insulation wall panel 20 has a cylindrical shape. Are the same, the same reference numerals are used in the drawings and the description thereof is omitted.

As shown in FIG. 11, the sound insulating wall 1 is formed by connecting the plurality of sound insulating wall panels 20 having the above-described structure without shifting in the vertical and horizontal directions by an appropriate connecting means such as an adhesive. As shown in FIG. 12, the plurality of sound insulation wall panels 20 having the above-described configuration are connected to each other by shifting them in the horizontal direction by means of an appropriate connecting means such as an adhesive without shifting them in the vertical direction and connecting them. Is configured.

In the fifth embodiment as well, as in the fourth embodiment, the space between the circular holes 24 of each sound insulating plate piece 21 is formed as a two-degree-of-freedom vibration type ventilation hole A, and the gap 33 between the sound insulating wall panels 20 is provided. Is configured as a one-degree-of-freedom vibration type ventilation hole B. The gap 33 can be changed depending on the connection method (position), whereby the frequency characteristic of sound insulation can be tuned. Further, since the side plate 22 has a cylindrical shape, the degree of freedom in arranging the sound insulation wall panels is high, and thus the shape variation of the sound insulation wall as a whole is excellent, and the outer shape of the sound insulation wall 1 can be configured in a curved shape. .

(Sixth Embodiment) FIG. 13 is a perspective view of a sound insulation wall panel 20 according to a sixth embodiment of the present invention, and FIG. 14 is a plan view of the sound insulation wall 1 using the sound insulation wall panel 20. In addition, in order to clearly show the connected state in FIG. 14, the sound insulation wall panel 20
The sound insulating plate piece 21 is painted dark, and the positions of the holes 34 are painted black.

In FIG. 13, the sound insulation wall panel 20 has two sound insulation plate pieces 21 facing each other in parallel at intervals, and the entire side surface between the two sound insulation plate pieces 21 is covered with a side plate 22. . This sound insulation wall panel 20 has a rectangular parallelepiped shape, and
A space (not shown) is formed inside by being surrounded by the sound insulating plate piece 21 and the side plate 22. Holes 34, which are openings, are provided on the four surfaces of the side plate 22, respectively.

As shown in FIG. 14, the sound-insulating wall panel 20 having the above-described structure is provided with the side plates 2 of each other by an appropriate connecting means such as an adhesive.
The sound insulation wall 1 is configured by connecting the two in a close contact state in the vertical and horizontal directions and appropriately thinning out one sound insulation wall panel 20. Sound insulation wall 1 configured in this way
The gap 33 formed by the sound insulation wall panel 20 is formed as a composite vibration type ventilation hole C like the other conventional examples.

(Seventh Embodiment) FIG. 15A is a perspective view of a sound insulation wall panel 20 according to a seventh embodiment of the present invention.
(B) is a plan view of the sound insulation wall 1 using the sound insulation wall panel 20. In FIG. 15B, in order to clearly show the connected state, the sound insulating plate piece 21 of the sound insulating wall panel 20 is painted thick, and the positions of the holes 34 are painted black.

In FIG. 15A, the sound insulation wall panel 20 according to the seventh embodiment has a side plate 22 having a cylindrical shape, and other configurations are the same as those of the sixth embodiment, and therefore the same reference numerals are used in the drawing. Is attached and its description is omitted.

As shown in FIG. 15 (b), the sound insulating wall 1 is formed by connecting the plurality of sound insulating wall panels 20 having the above-described structure with an appropriate connecting means such as an adhesive without shifting in the vertical and horizontal directions. There is. In the sound insulation wall 1 thus configured, the gap 33 formed by the sound insulation wall panel 20 is configured as a composite vibration type ventilation hole C as in the sixth embodiment.

(Eighth Embodiment) FIG. 16A is a perspective view of a sound insulation wall panel 20 according to an eighth embodiment of the present invention.
(B) is a plan view of the sound insulation wall 1 using the sound insulation wall panel 20. 16 (b), in order to clearly show the connected state, the sound insulating plate piece 21 of the sound insulating wall panel 20 is painted thick, and the positions of the holes 34 are painted black.

In FIG. 16A, the sound insulation wall panel 20 according to the seventh embodiment has a side plate 22 having a hexagonal shape, and the other structure is the same as that of the sixth embodiment. The reference numerals are given and the description thereof is omitted.

As shown in FIG. 16 (b), the sound insulating wall 1 is constructed by connecting the plurality of sound insulating wall panels 20 having the above-described structure with an appropriate connecting means such as an adhesive without vertically shifting each other. There is. In the sound insulation wall 1 thus configured, the gap 33 formed by the sound insulation wall panel 20 is configured as a composite vibration type ventilation hole C as in the sixth embodiment. Since the side plate 22 has a hexagonal shape, there is a certain degree of freedom in the connection surface, so there are connection variations, and the outer shape of the sound insulation wall 1 can be configured in a curved shape.
The shape of the side plate 22 is pentagonal, heptagonal, octagonal,
The polygonal shape may be larger than this.

(Ninth Embodiment) FIG. 17 is a perspective view of a sound insulation wall panel 20 according to a ninth embodiment of the present invention, and FIG. 18 is a plan view of essential parts of the sound insulation wall 1 using the sound insulation wall panel 20.

In FIG. 17, the sound insulation wall panel 20 according to the ninth embodiment has the same structure as that of the fifth embodiment shown in FIG. 10, and the connecting means is provided in four directions of the cylindrical side plate 22. A ball joint type male connecting portion 35a
And a female connecting portion 35b. A seal member 36, which is an elastic body such as rubber, is provided on the side plate 22 so as to project in place, and both sides of each of the connecting portions 35a and 35b are surrounded by the seal member 36.

As shown in FIG. 18, the sound insulating wall 1 is constructed by connecting the adjacent sound insulating wall panels 20 to each other at the connecting portions 35a and 35b. In the panel connection state, the seal members 36 of the adjacent sound insulation wall panels 20 are in pressure contact with each other to form a gap 33 in which no air leak occurs. Therefore, the air gap B of one degree of freedom vibration type without air leakage is formed in each of the gaps 33, so that better sound insulation characteristics can be obtained.

As shown in FIG. 19, since the ball joint type male connecting portion 35a and female connecting portion 35b are rotatable and the seal member 36 is elastically deformable, the sound insulating wall panels 20 adjacent to each other are in close contact with each other. It can be connected while being inclined while holding it. Therefore, as shown in FIG. 20, each sound insulation wall panel 20 is connected to the vertical line N of the noise source 37.
Can be arranged vertically. Since the sound insulation wall 1 can be expected to have the maximum sound insulation effect when sound is vertically incident, the maximum sound insulation effect can be exhibited.

The seal member 36 may be provided only on any one of the adjacent sound insulation wall panels 20.

In the ninth embodiment, the ball joint type male connecting portion 35a and female connecting portion 35b and the seal member 3 are used.
6 is applied to the cylindrical sound insulation wall panel 20, the shape of the sound insulation wall panel 20 is not limited to the cubic shape,
It can be applied to various shapes such as a rectangular parallelepiped shape.

(Tenth Embodiment) FIG. 21 shows the first embodiment of the present invention.
FIG. 22 is a perspective view of the sound insulation wall panel 20 according to the 0 embodiment, and FIG. 22 is a sectional view of the sound insulation wall panel 20. 21 and 22, the sound insulation wall panel 20 according to the tenth embodiment has substantially the same configuration as that of the fourth embodiment of FIG. 7, and each sound insulation plate piece 21 and the corner portion 21a of the side plate 22, and A different point is that the peripheral corner portion 24a of the hole 24 of the sound insulating plate piece 21 is formed in a curved shape, and other configurations are the same as those in the sixth embodiment, and therefore the same reference numerals are given to the drawings. And its description is omitted.

In the above structure, each corner 21a, 24a
Has a curved shape, the airflow flows without separation of the airflow, which reduces ventilation resistance and improves air permeability.

In the case where the side plate 22 has the groove portion 27 as in the first embodiment, the ventilation resistance can be reduced and the air permeability can be improved by forming the corner portion of the groove portion 27 into a curved shape. The sound insulation wall panel 20 of the embodiment has a rectangular parallelepiped shape, but the curved shape of each corner is applicable regardless of the shape of the sound insulation wall panel 20, and is effective.

[Brief description of drawings]

1A is a perspective view of a sound insulation wall panel according to a first embodiment of the present invention, FIG. 1B is a sectional view taken along line AA of FIG.
(C) is a plan view of a sound insulation wall using a sound insulation wall panel.

FIG. 2 is a perspective view showing a state in which a frame is attached around the sound insulation wall according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a sound insulation wall panel according to a second embodiment of the present invention.

FIG. 4 is a perspective view of a sound insulation wall panel according to a third embodiment of the present invention.

5 is a sectional view taken along line BB of FIG.

FIG. 6 is a plan view of a sound insulation wall using a sound insulation wall panel according to a third embodiment of the present invention.

FIG. 7 is a sound insulation wall panel 20 according to a fourth embodiment of the present invention.
FIG.

FIG. 8 is a plan view of a sound insulation wall using a sound insulation wall panel according to a fourth embodiment of the present invention.

FIG. 9 is a plan view showing a state in which a frame is attached around the sound insulation wall according to the fourth exemplary embodiment of the present invention.

FIG. 10 is a perspective view of a sound insulation wall panel according to a fifth embodiment of the present invention.

FIG. 11 is a plan view of a sound insulation wall using the sound insulation wall panel according to the fifth embodiment of the present invention.

FIG. 12 is a plan view of a sound insulation wall using a sound insulation wall panel according to a fifth embodiment of the present invention.

FIG. 13 is a perspective view of a sound insulation wall panel according to a sixth embodiment of the present invention.

FIG. 14 is a plan view of a sound insulation wall using a sound insulation wall panel according to a sixth embodiment of the present invention.

15A is a perspective view of a sound insulation wall panel according to a seventh embodiment of the present invention, and FIG. 15B is a plan view of a sound insulation wall using the sound insulation wall panel.

16A is a perspective view of a sound insulation wall panel according to an eighth embodiment of the present invention, and FIG. 16B is a plan view of a sound insulation wall using the sound insulation wall panel.

FIG. 17 is a perspective view of a sound insulation wall panel according to a ninth embodiment of the present invention.

FIG. 18 is a plan view of a main part of a sound insulation wall using the sound insulation wall panel according to the ninth embodiment of the present invention.

FIG. 19 is a side view showing a connected state of the sound insulation wall panel according to the ninth embodiment of the present invention.

FIG. 20 is a side view showing a state in which each sound insulation wall panel according to the ninth embodiment of the present invention is arranged in a direction perpendicular to a noise source.

FIG. 21 is a perspective view of a sound insulation wall panel according to a tenth embodiment of the present invention.

FIG. 22 is a sectional view of a sound insulation wall panel according to a tenth embodiment of the present invention.

FIG. 23 is a perspective view of a conventional sound insulation wall.

FIG. 24 is a diagram showing an air mass in a sound insulation wall of a conventional example.

FIG. 25 is a perspective view of another conventional sound insulation wall.

FIG. 26 is a diagram showing an air mass in another conventional sound insulation wall.

[Explanation of symbols]

1 Sound insulation wall 20 sound insulation wall panels 21 sound insulation plate 22 Side plate 23 Space 24 circular holes (openings) 25 protruding cylinder 26 slits 27 Groove A 2 degree of freedom vibration type ventilation hole B 1 degree of freedom vibration type ventilation hole C Compound vibration type vent

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G10K 11/172 B60R 13/08 B62D 25/20 F02B 77/13 G10K 11/16

Claims (17)

(57) [Claims] 1. A sound insulating plate piece facing each other at a distance, a side plate covering a side surface between the two sound insulating plate pieces, and the above-mentioned 2
A space surrounded by one piece of the sound insulation plate and the side plate;
At least one of the sound insulating plate pieces and the side plate has an opening communicating with the space and the outside, and in the panel connection state, the opening has the two sound insulating pieces. In the case of being provided in the above-mentioned structure, a ventilation hole as a sound insulation wall is formed between the opposing openings, and another communication as a sound insulation wall is provided between the side plate and one or more surrounding side walls of the sound insulation wall panel. When pores are formed and the opening is provided in the side plate, the side plate and the surrounding one or two
A sound insulation wall panel, characterized in that a ventilation hole as a sound insulation wall is formed between the side wall of the sound insulation wall panel and the side plate. 2. The sound insulation wall panel according to claim 1, wherein the openings provided in the two sound insulation plate pieces have substantially the same cross section as the openings protruding toward the inner surface side of each of the sound insulation plate pieces. Each of them is communicated with the inside of the protruding cylinder portion having the inner surface, and is communicated with the space portion through the slit between the tip end faces of the opposing protruding cylinder portions, the side plate is provided with the groove portion, and in the panel connection state, A two-degree-of-freedom vibration type ventilation hole is formed between the openings of the two sound insulating plate pieces, and a one-degree-of-freedom vibration type ventilation hole is formed by the groove portion of the side plate and the groove portion of the side plate of the adjacent sound insulating wall panel. A sound insulation wall panel characterized by being configured. 3. The sound insulation wall panel according to claim 1, wherein holes are provided in the two sound insulation plate pieces, and each of the holes is provided over the entire area between the two sound insulation plate pieces. And the opening provided in the side plate, which is communicated with the cylindrical portion having an inner surface of substantially the same cross-section as the groove formed in the side plate, is a hole of the two sound insulating plate pieces in the panel connection state. A sound insulation wall is characterized in that a one-degree-of-freedom vibration type ventilation hole is formed therebetween, and a two-degree-of-freedom vibration-type ventilation hole is constituted by the groove portion of the side plate and the groove portion of the side plate of the sound insulation wall panel adjacent thereto. panel. 4. The sound insulation wall panel according to claim 1, wherein the openings provided in the two sound insulation plate pieces have substantially the same cross section as the openings projecting toward the inner surface side of each of the sound insulation plate pieces. The two sound insulating plate pieces are communicated with each other in the protruding cylinder portion having the inner surface, and are communicated with the space portion through the slit between the tip end faces of the opposing protruding cylinder portions, and in the panel connection state, the openings of the two sound insulating plate pieces. A two-degree-of-freedom vibration type ventilation hole is formed between them, and a one-degree-of-freedom vibration type ventilation hole is formed by a gap between the side plate and one or more surrounding side walls of the sound insulation wall panel. Sound insulation wall panel to do. 5. The sound insulation wall panel according to claim 1, wherein the opening provided in the side plate is formed of a hole, and in the panel connection state, one or more sound insulation wall panels surrounding the side plate. A sound insulation wall panel characterized in that a compound vibration type ventilation hole is formed by a gap between the side plate and the side plate. 6. The sound insulation wall panel according to claim 1, wherein the side plate is provided with a connecting means. 7. The sound insulation wall panel according to claim 6, wherein the connecting means are joint types that are rotatable with respect to each other. 8. The sound insulation wall panel according to claim 1, wherein the side plate is provided with a seal member, and in the panel connection state, one or more sound insulation wall panels adjacent to the seal member of the side plate. A sound insulation wall panel, characterized in that the side plate or the seal member of the side plate abuts to form a vent hole. 9. The sound insulation wall panel according to claim 1, wherein corners of each of the sound insulation plate pieces and side plates, corners around the holes when the holes of the sound insulation plate piece are provided, and the side plate. A sound insulation wall panel characterized in that, when a groove is provided, the corners around the groove are formed into a curved shape. 10. The sound insulation wall panel according to claim 1, wherein the side surface as a whole has a polygonal shape. 11. The sound insulation wall panel according to claim 1, wherein the overall side surface has a cylindrical shape. 12. A sound-insulating plate piece facing each other at a distance, a side plate covering a side surface between the two sound-insulating plate pieces, and the above-mentioned 2
A space surrounded by one piece of the sound insulation plate and the side plate;
A plurality of sound-insulating wall panels provided on at least one of the sound-insulating plate pieces and the side plates and having an opening communicating the space with the outside are provided, and the plurality of sound-insulating wall panels are connected to form the opening. Is provided on the two sound insulating plate pieces, a ventilation hole is formed between the opposing openings as a sound insulating wall, and the side plate and the side plates of one or more surrounding sound insulating wall panels are formed. In the case where another vent hole is formed as a sound insulation wall, and the opening is provided on the side plate, a sound insulation wall is formed between the side plate and one or more surrounding side panels of the sound insulation wall panel. A sound insulation wall structure characterized by having ventilation holes. 13. The sound-insulating wall structure according to claim 12, wherein the openings provided in the two sound-insulating plate pieces have substantially the same cross section as the openings projecting toward the inner surface of each sound-insulating plate piece. The projecting cylinders each having an inner surface are communicated with each other, and are communicated with the space through the slits between the tip end faces of the projecting cylinders facing each other. A two-degree-of-freedom vibration type ventilation hole is formed between the openings of the two sound insulating plate pieces, and a one-degree-of-freedom vibration type ventilation hole is formed by the groove portion of the side plate and the groove portion of the side plate of the adjacent sound insulating wall panel. A sound insulation wall structure characterized by being constructed. 14. The sound-insulating wall structure according to claim 12, wherein holes are provided in the two sound-insulating plate pieces, and each hole is provided over the entire area between the two sound-insulating plate pieces. And the opening provided in the side plate, which is communicated with the cylindrical portion having an inner surface of substantially the same cross-section as the groove formed in the side plate, is a hole of the two sound insulating plate pieces in the panel connection state. A sound insulation wall having a one-degree-of-freedom vibration type ventilation hole formed therebetween, and a two-degree-of-freedom vibration-type ventilation hole formed by the groove portion of the side plate and the groove portion of the side plate of the sound insulation wall panel adjacent thereto. Construction. 15. The sound insulation wall structure according to claim 12, wherein the openings provided in the two sound insulation plate pieces have substantially the same cross section as the openings projecting toward the inner surface side of each of the sound insulation plate pieces. The two sound insulating plate pieces are communicated with each other inside the protruding cylinder portion having the inner surface, and are communicated with the space portion through the slit between the tip end faces of the opposing protruding cylinder portions, and in the panel connection state, the openings of the two sound insulating plate pieces. A two-degree-of-freedom vibration type ventilation hole is formed between them, and a one-degree-of-freedom vibration type ventilation hole is formed by a gap between the side plate and one or more surrounding side walls of the sound insulation wall panel. Sound insulation wall structure. 16. The sound insulation wall structure according to claim 12, wherein the opening provided in the side plate is formed of a hole, and in the panel connection state, one or more sound insulation wall panels surrounding the side plate. A sound insulation wall structure characterized in that a composite vibration type ventilation hole is formed by a gap between the side plate and the side plate. 17. The sound insulation wall structure according to claim 12, wherein the plurality of sound insulation wall panels connected to each other are surrounded by a frame body.