JP4444996B2 - Soundproof ventilation structure - Google Patents

Description

  The present invention, for example, when ventilating a soundproof space (room) in which a noise source is shielded by a soundproof structure (wall) or the like, suppresses the outflow of noise in the soundproof space (room) as much as possible. Concerning structure.

Now, it is possible to prevent the noise from flowing out by forming a soundproof space by shielding the periphery of the noise source that generates a large noise with a soundproof wall or the like. Ventilation in the soundproof space is required to suppress temperature rise in the interior, to prevent incomplete combustion, and to generate dust. If the ventilation port for this ventilation is provided, noise will flow out from the ventilation port to the outside together with the air trapped inside. In particular, the engine room of a large construction machine has a concern of engine overheating and incomplete combustion unless a large amount of air is allowed to flow in and out.
In this type of conventional sound deadening structure, for example, a sound-absorbing material having a random shape (random almost wave shape) is affixed to the inside (inner surface) of the duct of the engine room, and the rib is made of air. A sound-absorbing duct (see Patent Document 1) configured to extend in the flow direction to form a subdivided passage in the duct has been devised, and the plurality of sound-absorbing plates whose installation intervals are changed in accordance with the shape are proposed. An engine room sound absorbing device (see Patent Document 2) configured to circulate air within an interval has been devised.
Japanese Patent Application No.11-117661 Japanese Patent Laid-Open No. 2006-21772

However, in both of the above-described conventional devices (sound absorbing duct and sound absorbing device), the engine room or the like needs a large amount of cooling air inflow and exhaust gas exhaust to prevent incomplete combustion and temperature rise. Therefore, it is necessary to secure an air flow path with relatively little resistance, and due to its structure, the contact area between the air flow and the sound absorbing material is relatively small, and the outside is directly or once reflected to the adsorbing material. There is still a route for noise to leak out, and a large amount of exhaust gas is discharged, and internal noise also leaks to the outside, so that it has not yet been able to satisfy the noise reduction (soundproof) effect. .
Therefore, in view of the above-described conventional problems, the present invention exhausts a large amount of air (exhaust gas, etc.) from the soundproof space to the outside, or flows a large amount of air (cooling air, etc.) from the outside into the soundproof space. Thus, it is possible to provide a soundproof ventilation structure which can improve the ventilation state in the soundproof space and can suppress the outflow of noise as much as possible to maintain a good soundproofing property.

In order to solve the above-described problem, the invention according to claim 1 is a soundproof ventilation structure in a soundproof space in which a noise generation source is shielded by a soundproof structure, and a plurality of ventilation gaps that allow air flow are provided. in the thickness direction and continuous or short to extend and predetermined intervals apart parallel shape arranged long hole shape formed in a plate-like body the principal and without, at least a plurality of layers form a plate-like body At the same time, at least two adjacent plate-like bodies are formed from a sound absorbing material having a predetermined thickness that absorbs the noise by utilizing air circulation, and each of the plate-like bodies is laminated with each ventilation gap. The crossing portions are positioned in a crossing manner so that each crossing portion serves as a flow passage that ensures the communication state between the layers, and the ventilation gap portion of the uppermost plate-like body and the ventilation gap portion of the lowermost plate-like body are provided. Ventilation air of the uppermost plate is displaced at a position where it does not overlap Parts and wherein become configured to indirectly concealed in the bottom layer of the plate-like body.
According to this configuration, the air discharged together with noise from the soundproof space shielded by the plate-like body and the air flowing into the soundproof space from the outside are stepped by the respective ventilation gaps. The plate is formed of a flow passage and a sound absorbing material communicating with each other and discharged to the outside. In this plate-like part, the sound absorption material absorbs (acoustics) noise associated with the air flow that passes through it, and in the flow passage part that communicates in stages, the air flow can be removed linearly. The noise is absorbed (sound absorption) by avoiding it as much as possible and applying it to the part of the sound absorbing material of the plate-like body.
In particular, by forming each air gap in each plate-like body into a long hole shape, it is possible to rationally and easily form a flow passage communicating stepwise, and a large amount of air flow from the soundproof space to the outside. The exhaust of air and the inflow of a large amount of air from the outside into the soundproof space can be made to improve the ventilation state in the soundproof space, and the noise absorption (sound absorption) associated with the airflow that is discharged and flown in It is effective.
And, since the flow passage communicates in an indirectly concealed stage where the soundproof space cannot be seen directly from the outside, it is possible to minimize the leakage (outflow) of noise accompanying the air flow to the outside as much as possible. In addition, the labyrinth effect for reducing noise can be enhanced to effectively absorb noise (sound absorption).

The invention according to claim 2 is the soundproof ventilation structure according to claim 1, wherein all the plate-like bodies laminated in at least three layers have a predetermined thickness that absorbs the noise by using the air flow. It is formed from a sound absorbing material.
According to this configuration, the three-layered plate-like body to be laminated is made of the sound-absorbing material, so that the effect of absorbing (sound-absorbing) noise accompanying the air flow from the sound-absorbing material can be further enhanced. .

The invention described in claim 3 is the soundproof ventilation structure according to claim 1 or 2 , wherein a frame-shaped intermediate plate is interposed between at least two adjacent plates, and the two layers A ventilation space portion communicating with each of the ventilation gap portions is formed between the plate-like bodies.
According to this configuration, by forming a ventilation space portion between two layers of plate-like bodies, the labyrinth effect for reducing the noise caused by the ventilation space portion and each ventilation gap portion is enhanced, and noise absorption (sound absorption) is achieved. It can be made more effective.

The invention described in claim 4 is the soundproof ventilation structure according to any one of claims 1 to 3, wherein the entire outer edge of each plate-like body is surrounded by a frame. It is characterized by.
According to this configuration, the outer shape of the plate-like body made of the sound absorbing material is maintained by surrounding the entire outer edge portion of each plate-like body with the frame body.

The invention described in claim 5 is the soundproof ventilation structure according to any one of claims 1 to 4, wherein the sound absorbing material is provided on the front side or the back side of the plate-like body made of the sound absorbing material. A net-shaped shape holding member for holding the shape of the plate-like body is laid.
According to this configuration, the original shape such as the shape of the plate-like body made of the sound absorbing material is easily held by the net-like shape holding member.

In the first aspect of the invention, it is possible to rationally and easily form a flow passage communicating in a stepwise manner, discharge a large amount of airflow from the soundproof space to the outside , and the soundproof space from the outside. The inflow of a large amount of air into the soundproof space can be improved, the ventilation condition in the soundproof space can be improved, and the absorption and absorption of noise associated with the exhausted airflow is effectively performed. Can do. Furthermore, since the flow path is concealed indirectly so that the soundproof space cannot be directly seen from the outside, it is possible to suppress as much as possible the noise accompanying the air flow from leaking (outflowing) to the outside. Noise absorption (sound absorption) can be effectively achieved by increasing the labyrinth effect to be reduced.

In the invention according to claim 2, it is possible to further enhance the effect of absorbing (sound absorbing) noise associated with the air flow by the plate-like body from each sound absorbing material .

In the invention according to the third aspect, the labyrinth effect for reducing the noise caused by the ventilation space and each ventilation gap can be enhanced, and noise absorption (sound absorption) can be more effectively achieved.

In the invention according to claim 4, it is possible to maintain the outer shape of the plate-like body made of the sound absorbing material.

In the invention according to claim 5, it is possible to easily retain the original shape such as the shape of the plate-like body made of the sound absorbing material.

Next, the best mode for carrying out the present invention will be described according to examples.
(Example)

  Embodiments of the present invention will be described below with reference to the drawings.

In each of the embodiments shown in FIGS. 1 to 36, a soundproof wall member, a soundproof ceiling member, a soundproof floor member, a soundproof mat member, and the like used as a soundproof structure for a soundproof space in which a noise generation source is shielded by a soundproof structure. This is the case of adopting the soundproof ventilation structure.
As shown in FIGS. 1 to 6, the soundproof ventilation structure of the present embodiment is mainly composed of rectangular plate-like bodies 1 to 3, and the plate-like bodies 1 to 3 are composed of a plurality of layers (in the drawing, at least three layers). Are stacked.
In the two adjacent plate-like bodies 1 and 2, the uppermost plate-like body 1 is composed of a sound-absorbing material 1 A having a predetermined thickness that absorbs the noise by using air circulation. As shown in FIG. 1, a large number of ventilation gaps 4 to 4 are formed that extend along the horizontal edge of the rectangle and have a parallel long hole shape at a predetermined interval with respect to the vertical edge.
Similarly to the uppermost plate 1, the intermediate plate 2 is composed of a sound absorbing material 2 A having a predetermined thickness that absorbs noise by using air circulation. As shown in FIG. 3, a large number of ventilation gaps 5 to 5 are formed that extend along the vertical edge of the rectangle and have a parallel long hole shape at a predetermined interval with respect to the horizontal edge.

  The sound-absorbing materials 1A and 2A constituting the uppermost plate 1 and the intermediate-layer plate 2 may be any generally used material having excellent sound absorption and workability. It is used for materials such as existing glass wool and other inorganic fiber materials, urethane foam, rigid foamed urethane elastomer, and porous resin foams such as sponge rubber, etc. More preferably, the material is rich in flexibility following the shape change of the frame, the material is highly durable against air flow, and the material is highly breathable in which continuous voids are formed so as not to hinder the air flow.

The lowermost plate 3 adjacent to the intermediate plate 2 is configured as a substrate, and as shown in FIG. 4, along the rectangular lateral edge, like the uppermost plate 1. A large number of ventilation gaps 6 to 6 having a long hole shape extending in parallel and spaced apart from the vertical edge by a predetermined interval are formed. In addition, each ventilation space | gap part 6-6 in the plate-shaped body 3 of the lowest layer is the state (displacement) by the width | variety of the long hole shape with respect to each ventilation space | gap part 4-4 in the plate-shaped body 1 of the uppermost layer. In the state where the uppermost plate 1 and the lowermost plate 3 are laminated, the respective air gaps 4 to 4 and 6 to 6 are positioned so as not to be aligned and aligned. . In other words, the air gaps 4 to 4 of the uppermost plate 1 are indirectly concealed in the laminated state by the lowermost plate 3.
The lowermost plate-like body 3 is preferably formed of a material excellent in durability against load, impact, and heat and excellent in shape retention, and particularly preferably formed of a metal plate such as iron or stainless steel. . It is also possible to adopt an existing structure provided in a mechanical device or the like, for example, an engine room cover plate as it is.

  And each said plate-shaped body 1-3 is the state in which the ventilation | gas_flowing space | gap part 5-5, 6-6 orthogonally crosses the plate-shaped body 2 of an intermediate | middle layer with respect to the lowermost plate-shaped body 3 which makes a board | substrate. Laminate and laminate the uppermost plate 1 on the intermediate plate 2 in a state in which the air gaps 5 to 5 and 4 to 4 are orthogonal to each other (a state intersecting in a lattice pattern). A three-layer state is assumed. (See FIGS. 5-8)

  In this case, as shown in FIGS. 5 to 8, in the uppermost plate 1 and the intermediate plate 2, the intersecting portions of the ventilation gaps 5 to 5 and 4 to 4 are mutually connected. Are formed as a plurality of air flow paths R1 communicating with the air gaps 5 to 5 and 4 to 4, and other portions of the air gaps 5 to 5 and 4 to 4 are formed in the plate-like bodies 1 and 2. It is configured so as to be directly concealed (closed) by the sound absorbing materials 1A and 2A. In the plate member 2 of the intermediate layer and the plate member 3 of the lowermost layer, the ventilation gaps 5 to 5 and 6 to 6 intersect each other. A large number of portions are formed as air flow passages R2 communicating with the ventilation gap portions 5 to 5 and 6 to 6, and the other portions of the ventilation gap portions 5 to 5 and 6 to 6 are plate-like bodies. 2 is directly concealed (closed) by the sound absorbing material 2A and the plate portion of the plate-like body 3. However, each of the air gaps 6 to 6 in the lowermost plate 3 is formed in the same direction as each of the air gaps 4 to 4 in the uppermost plate 1. The flow passages R1 and R2 are not communicated in a straight line, but are communicated with a stepwise phase difference, and the ventilation gap 4 of the uppermost plate-like body 1 is formed. -4 is the plate portion of the lowermost plate-like body 3, and the air gaps 6-6 of the lowermost plate-like body 3 are indirectly concealed by the sound absorbing material 1A of the uppermost plate-like body 1. Become. (See Figure 8)

And in the outer region of the plate-like bodies 1 to 3 laminated in three layers, in particular, a frame body 7 that holds the shape of the plate-like bodies 1 and 2 made of a sound absorbing material is surrounded (equipped), Shape holding members 8 to 8 for holding the shape of the plate-like bodies 1 and 2 are installed in a laid manner on the front and back surfaces of the plate-like bodies 1 and 2 made of the sound absorbing materials 1A and 2A.
The frame body 7 is made of iron, stainless steel in order to maintain the sound absorbing effect of the sound absorbing materials 1A and 2A by maintaining the shape of the plate-like bodies 1 and 2 and preventing the infiltration of rainwater from the outer edge to the sound absorbing materials 1A and 2A. It is preferable to form a frame from a metal plate such as steel, and it is also possible to form the frame from a synthetic resin excellent in durability, and the shape holding member 8 is made of a metal plate such as iron or stainless steel. For example, it is desirable to form a net shape, a punching metal shape, or the like (in the present invention, these configurations are simply referred to as “net shape”) that does not impede the air flow related to the sound absorbing materials 1A and 2A. .

  As described above, in the soundproof ventilation structure mainly composed of the plate-like bodies 1 to 3 laminated in three layers, for example, an engine (not shown) that is a noise source accompanied by heat generation is enclosed and the inside thereof is soundproofed. It is assembled as a soundproof wall member, a soundproof ceiling member, a soundproof floor member, a soundproof mat member, etc., which is shielded as a space, and the soundproof space is ventilated for inflow of cooling air and exhaust gas of the engine. Each flow which is necessary and is constituted by the ventilation gaps 4 to 4, 5 to 5 and 6 to 6 in the plate-like bodies 1 to 3 laminated in a three-layer shape which is the soundproof ventilation structure and is in a communicating state. The air (outside air) on the outside S1 side passes from the sound absorbing materials 1A and 2A in the plate-like bodies 1 and 2 of the uppermost layer and the intermediate layer to the paths R1 and R2 and the ventilation gaps 6 to 6 in the plate-like body 3 of the lowermost layer. The engine (generator) is cooled in large quantities. The air (exhaust gas, etc.) inside the soundproof space S2 is similarly formed from the sound absorbing materials 1A, 2A to the lowermost plate in the flow passages R1, R2 and the upper and middle plate members 1, 2. A large amount is discharged (exhausted) to the outside S1 (outside air) side through the ventilation gaps 6 to 6 in the body 3.

The air (exhaust gas, etc.) in the soundproof space S2 passes from the ventilation gaps 6 to 6 in the lowermost plate 3 through the sound absorbing materials 1A and 2A in the uppermost and intermediate plates 1 and 2A. When exhausted (exhausted) to the outside (outside air) side, the noise of the air flow passing through the sound absorbing materials 1A, 2A in the two plate-like bodies 1, 2 is absorbed (silenced) by the two sound absorbing materials 1A, 2A. Exhibits a silencing effect.
Furthermore, the air (exhaust gas) in the soundproof space S2 from the flow passages R1 and R2 that are configured by the ventilation gaps 4 to 4, 5 to 5, and 6 to 6 in the plate-like bodies 1 to 3 and are in communication with each other. Etc.) are exhausted (exhaust) to the outside (outside air) side, the flow paths R1 and R2 are not communicated in a straight line, but are communicated with a stepwise phase difference. The air flow does not come off linearly and inevitably comes into contact with the sound absorbing materials 2A and 1A of the plate-like bodies 2 and 1, thereby absorbing (absorbing) noise in the air flow. That is, in each of the flow passages R1 and R2 communicated with a stepwise phase difference, noise is attenuated by the labyrinth effect that collides with the sound absorbing material 2A and 1A together with the air flow, thereby exhibiting the silencing effect.
Therefore, it is possible to discharge a large amount of air flow from the soundproof space S2 to the outside S1 and to allow a large amount of air to flow from the outside S1 to the soundproof space S2, and to improve the ventilation state in the soundproof space S2. In addition, it effectively absorbs noise (sound absorption) associated with the discharge and inflowing air flow.
Furthermore, since each flow path R1, R2 communicates from the outside S1 in a indirectly concealed stage where the soundproof space S2 is not directly visible, noise associated with the airflow leaks (outflows) directly to the outside. Can be effectively suppressed and noise absorption (sound absorption) can be eliminated.

Next, a description will be given of an aspect in which the intermediate plate-like body 9 shown in FIG. 2 is combined. As shown in the figure, the intermediate plate-like body 9 is formed in a rectangular frame shape having a desired width, Similar to the plate-like bodies 1 and 2 of the uppermost layer and the intermediate layer, the sound-absorbing material 9A has a desired thickness.
As shown in FIGS. 9 to 11, the intermediate plate 9 is laminated in a layered manner between the uppermost plate 1 and the intermediate plate 2 in the above-described embodiment, A ventilation space 10 communicating with the ventilation gaps 4 to 4 and 5 to 5 is formed between the uppermost plate 1 and the intermediate plate 2. Since this is the same as that of the above-described embodiment, the same member configuration is denoted by the same reference numeral in the drawing, and the description thereof is omitted.

  Therefore, in this embodiment, the amount of passing air is increased between the uppermost plate 1 and the intermediate plate 2 by the ventilation space 10 formed by the interposition of the intermediate plate 9. In addition, the labyrinth effect of the air flow described above can be enhanced to further promote the silencing effect, and the remaining operational effects can enjoy the operational effects of the above-described embodiment. In addition, in FIG. 13, the flow of the discharge | emission of the airflow in each ventilation space | gap part 4-4, 5-5, 6-6, and the ventilation space part 10 of each plate-shaped body 1,2,3 is shown by the arrow.

Then, another combined embodiment of the intermediate plate 9 will be described with reference to FIG. 12. This embodiment eliminates the intermediate layer plate 2 and removes the uppermost plate as shown in the figure. 1 and the lowermost plate 3 are laminated in a layered state, and between the uppermost plate 1 and the lowermost plate 3, the air gaps 4 to 4, 6 is a mode in which a ventilation space portion 10 communicating with 6 to 6 is formed, and the remaining configuration is the same as that of the above-described embodiment. Is omitted.
Accordingly, the amount of passing air can be increased also in this aspect, and the labyrinth effect of the air flow described above is enhanced to further promote the silencing effect, and the other operational effects are the embodiments described above. The effect of this is enjoyed. In addition, in the figure, the flow of the discharge of the air flow in each ventilation space | gap part 4-4, 6-6 of each plate-like body 1 and 3 and the ventilation space part 10 is shown by the arrow.

In the embodiment described above, as shown in FIG. 14, a roof member (upper cover member) 11 can be installed above the uppermost plate 1 through a predetermined space. In this case, the roof member (upper cover member) 11 is preferably formed of metal or synthetic resin, and various means are possible in the installed state, but the uppermost plate shape It is configured to be attached to the frame body 7 through a predetermined space portion that forms a flow path that allows airflow above and to the side of the body 1, and the remaining configuration is the above-described embodiment. Therefore, the same member configuration is denoted by the same reference numeral in the drawing, and the description thereof is omitted.
Therefore, in this aspect, it is possible to prevent the intrusion of rainwater from the uppermost plate 1 to ensure the sound absorbing effect of the sound absorbing material 1A, and the other effects are the effects of the above-described embodiment. Enjoy. In the figure, the flow of the air flow is indicated by arrows.
It is also possible to provide a sound absorbing material similar to that described above on the back side of the roof member (upper cover member) 11.

Furthermore, in the above-described embodiment, as shown in FIGS. 15 and 16, when the soundproof ventilation structure mainly composed of the plate-like bodies 1 to 3 laminated in three layers is used in the vertical direction, it faces the outside. For example, the plate-like looper member 12 can be mounted on the side surface of the uppermost plate-like body 1. That is, the looper member 12 is excellent in durability and weather resistance. For example, the looper member 12 is made of a synthetic resin such as acrylic or a metal such as aluminum, stainless steel, or iron, and has a predetermined thickness. A plurality of air vents 12a partitioned by fins are provided in a slanting manner, and the other configurations are the same as those described above, and the same member configurations are denoted by the same reference numerals in the drawings and described. Is omitted.
Therefore, by installing the looper member 12, the so-called flowing water state in which rainwater enters the uppermost plate-like body 1 facing the outside, for example, is suppressed as much as possible. The sound absorbing effect and the like of the sound absorbing material 1A can be ensured, and the remaining operational effects enjoy the operational effects of the above-described embodiment.

Next, another embodiment of the shape holding member 8 will be described with reference to FIGS. 17 to 21. First, the embodiment shown in FIGS. 17 to 19 is a belt-like substrate with respect to the shape holding member 8 formed in a knitted shape. A plurality of 13 to 13 are disposed, and the inner surfaces of the ventilation gaps 4 to 4 and 5 to 5 in the plate-like bodies 1 and 2 of the uppermost layer and the intermediate layer made of the sound absorbing materials 1A and 2A are disposed on the belt-like substrates 13 to 13, In this case, a plurality of pairs of restricting pieces 14 to 14 that are in contact with each other are arranged in a standing manner at a desired interval. In this case, the sound absorbing materials 1A and 2A are entirely arranged by the pair of restricting pieces 14 to 14. It is possible to prevent deformation and ensure the shape of each of the ventilation gaps 4 to 4 and 5 to 5 (flow passages R1 and R2), and to secure a large amount of air flow and a sound absorption effect.
Further, in the embodiment shown in FIG. 20 and FIG. 21, a plurality of net-like pairs of regulating pieces 14 a to 14 a of the same member are directly raised from the knitted shape holding member 8 at a desired interval. In this case as well, in this case as well, the deformation of the entire sound absorbing material 1A, 2A is prevented and the shape of each of the air gaps 4-4, 5-5 (flow passages R1, R2) is secured. Therefore, it is possible to secure a large amount of air flow and a sound absorbing effect.

Subsequently, still another aspect of the above-described three-layered plate-like bodies 1, 2, and 3 will be described with reference to FIGS. 22 to 25. Like the plate-like bodies 1 and 2 of the layers, the sound-absorbing material 3A is used, and the lower surface of the lower-layer plate-like body 3 is made of metal such as mesh or punching metal (may be made of synthetic resin). Is a mode in which at least three plate-like bodies 1, 2, and 3 are laminated (see FIGS. 23 to 25), and the other configurations are the same as those described above, and the same member The components are denoted by the same reference numerals in the drawing and description thereof is omitted.
Therefore, even in this aspect, the long holes in which the ventilation gaps 6 to 6 in the lowermost plate 3 are formed in the same direction with respect to the ventilation gaps 4 to 4 in the uppermost plate 1. Since it is formed in a state that is phased (displaced) by the shape of the hole width, the flow paths R1 and R2 are not communicated in a straight line, but are communicated with a stepwise phase difference (see FIGS. 23 to 25). And the ventilation gaps 4 to 4 of the uppermost plate 1 are the sound absorbing material 3A of the lowermost plate 3, and the ventilation gaps 6 to 6 of the lowermost plate 3 are the uppermost layers. The sound absorbing material 1A of the plate-like body 1 is indirectly concealed so that the effects of the above-described aspect can be enjoyed as they are and further sound absorbing effects can be achieved.

Moreover, in another aspect shown in FIGS. 26-33, each ventilation space | gap part 4-4, 5-5 in the three-layer plate-like bodies 1, 2, and 3 which consist of sound-absorbing material 1A, 2A, 3A, This is an aspect in which 6 to 6 are continuous in a short-circuit shape, and the remaining configuration is the same as that described above, and the same member configuration is denoted by the same reference numeral in the drawing and description thereof is omitted.
Therefore, even in this embodiment, the ventilation gaps 6 to 6 that are continuous in the short-circuited state in the lowermost plate-like body 3 are connected in the short-circuiting manner in the uppermost plate-like body 1 in the same manner as described above. The flow paths R1 and R2 are not communicated in a straight line and are stepwise because they are formed in a phase (displacement) by the width of a long hole formed in the same direction with respect to the parts 4-4. It becomes the state (refer FIG.31 and FIG.33) connected by the phase difference, The ventilation space | gap part 4-4 of the uppermost plate-like body 1 is the sound-absorbing material 3A of the lowermost plate-like body 3, and the lowermost-layer board. The air gaps 6 to 6 of the sheet-like body 3 are indirectly hidden by the sound absorbing material 1A of the uppermost plate-like body 1, and the effects of the above-described aspect are enjoyed as they are. In this case, the lowermost plate-like body 3 may not be composed of the sound absorbing material 3A.

  The shape of each of the ventilation gaps 4 to 4, 5 to 5 and 6 to 6 described above is a long hole, as shown in FIGS. 34 and 35, round holes and square holes (in the figure, round holes). The air gaps 4-4, 5-5, 6-6 (flow passages R1 and R2) are not communicated in a straight line, but communicated with a stepwise phase difference. Various modifications are possible as long as the configuration is in a state.

  Moreover, in each embodiment mentioned above, the dimension and number of each ventilation space | gap part 4-4, 5-5, 6-6 of each plate-shaped body 1, 2, 3 are the scales of the target object each installed. However, in the above-described embodiment, the air gap (hole) width in each of the ventilation gaps 4 to 4, 5 to 5, and 6 to 6 is set to be different from each other. For example, when the dimensions of the plate-like bodies 1, 2, and 3 are 140 cm long and 155 cm wide, it is desirable to set them to 5 to 10 cm.

  Further, in each of the above-described embodiments, the actual usage mode is applied by applying to various modes for forming a soundproof space, and the configuration of each member is limited to that shown in the drawings. Instead, various modifications can be made without departing from the spirit of the present invention.

It is a top view which shows the plate-shaped body of the uppermost layer in an Example. It is a plane surface which similarly shows an intermediate plate-shaped body. It is a top view which similarly shows the plate-shaped object of an intermediate | middle layer. It is a top view which similarly shows the lowermost plate-shaped body. It is a top view which shows the state which laminated | stacked the uppermost layer, the intermediate | middle layer, and the lowermost layer plate. It is an AA line end view of FIG. FIG. 6 is an end view taken along line BB in FIG. 5. It is the CC sectional view taken on the line of FIG. FIG. 6 is an end view corresponding to the cross-sectional view taken along the line AA of FIG. 5 in a state where intermediate plate-like bodies are stacked. FIG. 6 is an end view corresponding to the cross-sectional view taken along the line BB of FIG. 5 in a state where the intermediate plate bodies are similarly laminated. FIG. 6 is an end view corresponding to the cross-sectional view taken along the line CC of FIG. 5 in a state where the intermediate plate bodies are similarly laminated. It is an end view which shows the state of another aspect which laminated | stacked the intermediate plate-shaped object. It is an end view which shows the air flow in the state which laminated | stacked the intermediate plate-like body similarly. It is an end view which shows the aspect which installed the roof member. It is a front view which shows the aspect which installed the looper member. It is the DD sectional view taken on the line of FIG. It is a top view of the aspect which shows another example of a shape holding member. It is the EE line | wire end view of FIG. It is the FF line | wire end view of FIG. It is an expanded sectional view showing another example of a shape maintenance member. It is the whole top view which shows the further another example of a shape holding member similarly. It is a top view which shows another aspect which laminated | stacked the uppermost layer, the intermediate | middle layer, and the lowermost layer plate. FIG. 23 is an end view taken along line GG in FIG. 22. FIG. 23 is an end view taken along line HH in FIG. 22. It is the II sectional view taken on the line of FIG. It is a top view which shows the plate-shaped body of the uppermost layer in another aspect of a ventilation space | gap part. It is a top view which similarly shows the plate-shaped object of an intermediate | middle layer. It is a top view which similarly shows the lowermost plate-shaped body. It is a top view which shows a net-like board | substrate. It is a top view which shows the state which laminated | stacked the uppermost layer, intermediate | middle layer, lowermost layer, and board | substrate in another aspect of a ventilation space | gap part. It is the JJ line | wire end view of FIG. FIG. 31 is an end view of line KK in FIG. 30. It is the LL line end view of FIG. It is an expanded sectional view which shows another another aspect of a ventilation space part. It is also a plan view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Uppermost plate-like body 1A Sound-absorbing material 2 Middle-layer plate-like body 2A Sound-absorbing material 3 Lowermost-layer plate-like bodies 4, 5, 6 Ventilation gaps R1, R2

Claims (5)

A soundproof ventilation structure in a soundproof space in which a noise generation source is shielded by a soundproof structure, and a plurality of ventilation gaps that allow air flow to extend in the thickness direction in a continuous or short-circuited manner at a predetermined interval parallel shape arranged long hole shape formed in a plate-like body the principal and without, as well as laminated on at least the plurality of layers form a plate-like body, a plate-shaped body of at least two adjacent layers of the flow of air It is formed from a sound-absorbing material of a predetermined thickness that absorbs the noise by utilizing it, and when laminating each plate-like body, each air gap is positioned in a cross shape so that each cross site is in communication between each layer And the ventilation gap of the uppermost plate is displaced so that the ventilation gap of the uppermost plate and the ventilation gap of the lowermost plate do not overlap. Do not cover the part indirectly with the bottom plate. Soundproofing vent structure characterized by. 2. The soundproof ventilation structure according to claim 1, wherein all of the plate-like bodies laminated in at least three layers are formed from a sound absorbing material having a predetermined thickness that absorbs the noise by using air circulation. Soundproof ventilation structure. 3. The soundproof ventilation structure according to claim 1, wherein a frame-shaped intermediate plate-like body is interposed between at least two adjacent plate-like bodies, and each of the ventilation layers is interposed between the two layers of plate-like bodies. A soundproof ventilation structure characterized by forming a ventilation space communicating with a gap . The soundproof ventilation structure according to any one of claims 1 to 3, wherein the entire outer edge of each plate-like body is surrounded by a frame . The soundproof ventilation structure according to any one of claims 1 to 4, wherein the mesh shape retains the shape of the plate-like body on the front side or the back side of the plate-like body made of the sound absorbing material. A soundproof ventilation structure characterized by laying a shape holding member .

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