JP2022044242A - Soundproof chamber - Google Patents

Abstract

To provide a soundproof chamber to solve the problem in which a conventional soundproof chamber as a sealed space has been difficult to be installed and was not able to execute air conditioning or ventilation as well.SOLUTION: A soundproof chamber 1 comprises: a first soundproof wall (a lateral surface panel 11a) having one end installed at a prescribed installation position and the other end installed in a first direction from the installation position; a second soundproof wall (lateral surface panels 11b, 11c) having the other end in a second direction substantially orthogonal to the first direction; a third soundproof wall (lateral surface panels 11d, 11e) having the other end in a third direction opposite to the first direction, and longer than the first soundproof wall; a fourth soundproof wall (lateral surface panels 11f-11h) having the other end in a fourth direction opposite to the second direction, and longer than the second soundproof wall; a fifth soundproof wall (lateral surface panels 11i-11k) having the other end in the first direction, and longer than the third soundproof wall; and a sixth soundproof wall (a lateral surface panel 11m) having the other end in the second direction.SELECTED DRAWING: Figure 3

Description

The present invention relates to, for example, a soundproof chamber used for practicing musical instruments.

Conventionally, in an environment where loud noise is generated such as musical instrument practice or home theater, construction work to provide a soundproof room in a house may be performed. Generally, the soundproof chamber is composed of heavy panels and doors, and it is possible to prevent the sound emitted in the soundproof chamber from propagating to the outside of the soundproof chamber. As a technique relating to such a soundproof chamber, the technique disclosed in Patent Document 1 below has been known.

Patent Document 1 discloses an assembly-type soundproof chamber including a ceiling panel and a plurality of wall panels. This assembly-type soundproof chamber is constructed by assembling a plurality of panels into a box shape. The panel has a proven track record as a soundproof material and is already on the market, and the panel structure is a self-supporting product that incorporates highly compressed glass fiber and a plate of vibration-proof material.

Japanese Unexamined Patent Publication No. 2017-210827

The conventional soundproof room is composed of a closed space without a window that can be opened and closed, and cannot be air-conditioned or ventilated. For this reason, it was difficult to practice musical instruments in an anechoic chamber, especially in the summer. Further, when the air-conditioning device is installed in the conventional soundproof room, there is a problem that the installation cost increases.

The present invention has been made in view of such a situation, and an object of the present invention is to provide a soundproof room that can be easily installed.

The soundproof room according to the present invention has a first soundproof wall in which one end is installed at a predetermined installation position and the other end is installed in the first direction from the installation position, and an installation starting from the other end of the first soundproof wall. One end is installed at the position, and the other end is installed in the second direction, which is almost perpendicular to the first direction. The other end is installed in the third direction opposite to the first direction, and one end is installed at the third soundproof wall longer than the first soundproof wall and the installation position starting from the other end of the third soundproof wall. The other end is installed in the fourth direction opposite to the second direction, and one end is installed at the installation position starting from the other end of the fourth noise barrier, which is longer than the second noise barrier, and the other end of the fourth noise barrier. It is installed, the other end is installed in the first direction, the fifth soundproof wall longer than the third soundproof wall, and one end is installed at the installation position starting from the other end of the fifth soundproof wall, and the other end is installed in the second direction. A sixth soundproof wall on which the other end is installed is provided.

Although the soundproof chamber according to the present invention is not provided with a door, high soundproof performance can be obtained. Further, since the door is not provided, ventilation and air conditioning inside the soundproof room are easy, and a person in the soundproof room can spend comfortably.
Issues, configurations and effects other than those described above will be clarified by the following description of the embodiments.

It is an external perspective view which shows the whole structure example of the soundproof chamber which concerns on 1st Embodiment of this invention. It is an external perspective view which shows the structural example of the soundproof room which removed the ceiling panel which concerns on 1st Embodiment of this invention. It is a top view which shows the arrangement example of the side panel and the connection joiner of the soundproof chamber which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the soundproof performance of the soundproof chamber which removed a part of the side panel which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the soundproofing performance of the soundproofing chamber which concerns on 1st Embodiment of this invention. It is a perspective view which shows the whole structure example of the soundproofing apparatus which concerns on 1st Embodiment of this invention. It is a side view which shows the structural example and use example of the soundproofing apparatus which concerns on 1st Embodiment of this invention. It is a side view which shows the structural example and use example of the soundproofing apparatus which concerns on 2nd Embodiment of this invention. It is a side view which shows the structural example and 1st use example of the soundproofing apparatus which concerns on 3rd Embodiment of this invention. It is a side view which shows the structural example and the 2nd use example of the soundproofing apparatus which concerns on 3rd Embodiment of this invention.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings. In the present specification and the drawings, components having substantially the same function or configuration are designated by the same reference numerals, and duplicate description will be omitted.

[First Embodiment]
First, the structure of the soundproof chamber according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 5.

<Example of overall configuration of soundproof room>
FIG. 1 is an external perspective view showing an example of the overall configuration of the soundproof chamber 1.
FIG. 2 is an external perspective view showing a configuration example of the soundproof chamber 1 from which the ceiling panels 13a to 13c have been removed.
FIG. 3 is a top view showing an arrangement example of the side panels 11a to 11m and the connecting joiners 12a to 12k of the soundproof chamber 1. In the soundproof room 1 shown in FIG. 3, the description of the ceiling panel 13 and the ceiling joiner 14 is omitted.

The installation location of the soundproof room 1 according to the present embodiment is assumed to be, for example, in a room of a house, a condominium, or an apartment. The soundproof chamber 1 is used for practicing the performance of musical instruments such as woodwind instruments and stringed instruments. In the soundproof chamber 1, for example, it is recommended to use a musical instrument that plays at a volume of about 80 dB or less. In addition to playing musical instruments, by installing the soundproof room 1 in a part of the room, the soundproof room 1 can be used as a study room, bedroom, or home theater, or as a kennel to reduce the howling of indoor dogs. You may do it.

The soundproof room 1 is installed on the upper surface of the floor 10 provided in the house. A commercially available soundproof carpet (soundproofing performance of about 35 to 45 dB) or the like may be laid on the floor 10 in order to enhance the soundproofing performance. As shown in FIGS. 1 to 3, the soundproof chamber 1 is composed of side panels 11a to 11m, connecting joiners 12a to 12k, ceiling panels 13a to 13c, and ceiling joiners 14a to 14d. As shown in FIG. 3, the side panels 11a to 11m are formed in a substantially spiral shape.

Then, the air blown from the air conditioner flows in from the opening 21 of the soundproof chamber 1 toward the inside of the soundproof chamber 1. This air circulates inside the soundproof chamber 1 and flows out of the opening 21 again. Therefore, the air inside the soundproof chamber 1 is cooled or warmed by the air blown from the air conditioner.

The ceiling panel 13b is provided with a lighting mounting portion 15. A power cord 16 is connected to the lighting mounting portion 15. The power cord 16 is electrically connected to an outlet (not shown) along the ceiling panel 13a and the side panel 11c. Further, a lighting fixture (not shown) provided inside the soundproof chamber 1 is connected to the lighting mounting portion 15. This luminaire illuminates the inside of the soundproof chamber 1 with the electric power supplied through the power cord 16.

Then, the side ends of the side panels 11a and 11b are fitted into the recesses formed in the connecting joiner 12a. The side panels 11a and 11b are fixed upright to the floor 10. Further, the side ends of the side panels 11b and 11c are fitted into the recesses formed in the connecting joiner 12b. The side panels 11b and 11c are fixed to the floor 10 so as to be upright. Similarly, the side panels arranged next to each other are connected by a connecting joiner and fixed upright to the floor 10. In the following description, when the side panels 11a to 11m are not distinguished, it is described as "side panel 11", and when the connected joiners 12a to 12k are not distinguished, it is described as "connected joiner 12".

As shown in FIG. 2, the ceiling joiner 14a is fitted on the upper part of the upright side panels 11d, 11e and the connecting joiners 12c to 12e. Further, the ceiling joiner 14b is fitted in the upper part of the upright connected joiners 12b and 12f. Then, the ceiling panel 13a is placed between the ceiling joiners 14a and 14b. Similarly, the ceiling panels 13b and 13c are also placed between the two adjacent ceiling joiners 14c and 14d fitted in the upper part of the side panel 11 and the connecting joiner 12. The ceiling panels 13a to 13c form the ceiling of the soundproof chamber 1. In the following description, when the ceiling panels 13a to 13c are not distinguished, it is described as "ceiling panel 13", and when the ceiling joiners 14a to 14d are not distinguished, it is described as "ceiling joiner 14".

In the following description, a portion composed of one or a plurality of side panels 11 arranged in the same direction is referred to as a soundproof wall. The soundproof walls constituting the soundproof chamber 1 are referred to as first to sixth soundproof walls in the order in which they are installed. The first to sixth soundproof walls are installed next to each other in order. The connection joiner 12 is assumed to be included in each soundproof wall, and the description thereof will be omitted.

As shown in FIG. 3, one end of the first soundproof wall (side panel 11a) is installed at a predetermined installation position 41, and the other end is installed in the first direction (−Y direction) from the installation position 41.
One end of the second soundproof wall (side panels 11b, 11c) is installed at the installation position 42 starting from the other end of the first soundproof wall, and the second soundproof wall is substantially perpendicular to the first direction (−Y direction). The other end is installed in the direction of (+ X direction).

One end of the third soundproof wall (side panels 11d, 11e) is installed at the installation position 43 starting from the other end of the second soundproof wall, and the third direction opposite to the first direction (−Y direction). The other end is installed in the (+ Y direction). The length of the third soundproof wall (side panels 11d, 11e) is longer than that of the first soundproof wall (side panels 11a).

One end of the fourth soundproof wall (side panels 11f to 11h) is installed at the installation position 44 starting from the other end of the third soundproof wall, and the fourth direction (+ X direction) opposite to the second direction (+ X direction). The other end is installed in the-X direction). The length of the fourth soundproof wall (side panels 11f to 11h) is longer than that of the second soundproof wall (side panels 11b, 11c).

One end of the fifth soundproof wall (side panels 11i to 11k) is installed at the installation position 45 starting from the other end of the fourth soundproof wall, and the other end is installed in the first direction (−Y direction). The length of the fifth soundproof wall (side panels 11i to 11k) is longer than that of the third soundproof wall (side panels 11d, 11e).
One end of the sixth soundproof wall (side panel 11 m) is installed at the installation position 46 starting from the other end of the fifth soundproof wall, and the other end is installed in the second direction (+ X direction).

As shown in FIG. 3, the internal space of the soundproof chamber 1 is divided into a sound emitting space 31 and a passage 32.
The sound emitting space 31 is a space surrounded by a first soundproof wall, a second soundproof wall, a third soundproof wall, and a part of the fourth soundproof wall. For example, a substantially square space whose boundary is defined by the side panels 11a to 11g is used as the sound emitting space 31. In this sound emitting space 31, the sound source can be emitted.

It is desirable that the musical instrument performance or the like be performed in the sound emitting space 31. The soundproof room 1 is composed of a sound emitting space 31 and a passage 32. Further, the soundproof chamber 1 includes a ceiling portion composed of ceiling panels 13a to 13c. Soundproofing (pasting of a bubble member such as a sponge, etc.) is applied to the first to sixth soundproof walls and the ceiling portion on the side facing the sound emitting space 31 and the passage 32. The volume emitted in the sound emitting space 31 first hits the side panel 11 and the ceiling panel 13 constituting the sound emitting space 31 and is attenuated.

Since the connecting joiner 12 reflects the sound, the sound is less likely to leak from between the adjacent side panels 11. Similarly, since the ceiling joiner 14 also reflects the sound, the sound is less likely to leak between the adjacent ceiling panels 13 and between the side panel 11 and the ceiling panel 13.

The passage 32 is a space surrounded by another part of the fourth soundproof wall, the fifth soundproof wall, and the sixth soundproof wall. The passage 32 is a substantially rectangular space whose boundary is defined by the side panels 11g to 11m. The space between one end of the first soundproof wall and the fourth soundproof wall is used as an opening 22 of the sound emitting space 31. The opening 22 is one end of the passage 32. That is, the opening 22 serves as a space in which the user of the soundproof chamber 1 can move to the passage 32. The other end of the passage 32 is the opening 21 of the passage 32.

The width of the passage 32 may be long enough for the performer or the like to smoothly enter and exit. As shown in FIG. 2, in the present embodiment, the width of the passage 32 is about 600 mm. In the passage 32, a person staying in the sound emitting space 31 can enter the sound emitting space 31 from the outside of the soundproofing room 1 or go out of the sound emitting space 1 from the sound emitting space 31.
On the other hand, the sound reflected from the side panel 11 and the ceiling panel 13 constituting the sound emitting space 31 leaks to the passage 32 through the opening 22, but the size thereof is considerably attenuated.

That is, the sound leaking from the sound emitting space 31 is also reflected inside the passage 32. Then, the volume of the sound entering the inside of the passage 32 is attenuated each time it hits the inside of the side panel 11 and the ceiling panel 13c constituting the passage 32. Therefore, the volume of the sound flowing out from the passage 32 to the opening 21 is sufficiently attenuated, and the sound leaking from the soundproof chamber 1 is sufficiently reduced.

Further, as described above, the first soundproof wall to the sixth soundproof wall, and the ceiling portion are each composed of one or a plurality of disassembleable side panels 11 and ceiling panels 13. That is, a plurality of side panels 11 are arranged in the same direction or arranged in the vertical direction and joined by the connecting joiner 12. Also, one or more side panels 11 are coupled in a direction substantially perpendicular to each other. Further, one or more side panels 11 and the ceiling panel 13 are connected to each other in a substantially vertical direction by the connecting joiner 12.

As shown in FIG. 2, the dimensions of the side panel 11 per sheet are 2050 mm × 600 mm × 50 mm. The weight of each side panel 11 is about 5 kg. Further, the number of side panels 11 used in the soundproof chamber 1 is twelve. Therefore, the total weight of the side panel 11 is about 60 kg (= 5 kg × 12 sheets).

The dimensions of each of the ceiling panels 13a and 13b are 1200 mm × 600 mm × 25 mm. The dimensions of the ceiling panel 13c are 1800 mm × 600 mm × 25 mm. The total weight of the ceiling panels 13a to 13c is about 10 to 15 kg.
Further, the installation space of the soundproof room 1 may be about 2 tatami mats on the upper surface of the floor 10. Therefore, the soundproof chamber 1 has a simple configuration in which the user himself / herself can assemble, disassemble, and move the soundproof chamber 1.

<Comparative example of soundproofing performance>
Next, the difference in soundproofing performance between the soundproofing chamber 1 according to the present embodiment and the soundproofing chamber 1A from which the side panel 11 m is removed from the soundproofing chamber 1 will be described with reference to FIGS. 4 and 5.
FIG. 4 is a diagram for explaining the soundproofing performance of the soundproofing chamber 1A in which the side panel 11m is removed and the opening 21 of the passage 32 is opened.
FIG. 5 is a diagram for explaining the soundproofing performance of the soundproofing chamber 1 in which the side panel 11m is installed and the opening 21 of the passage 32 is closed.

In FIGS. 4 and 5, the volume sensor measures the volume of the sound emitted when the performer plays the musical instrument as a sound source at the same place in the sound emitting space 31 and the passage 32 with the same change in volume. An example is shown. In this measurement, it is assumed that the performer plays the oboe at the maximum volume, with the range used being in the range of b-flat to two-point. The oboe is an instrument with strong directivity (straightness) of sound, so it is ideal for such experiments. The volume measurement location 40 is outside the soundproof chambers 1 and 1A, and both are the same location.

Further, the sound emission positions A to G indicated by circles in FIGS. 4 and 5 represent positions where the performer has played the musical instrument. Further, the arrows pointing in a predetermined direction starting from the sound emitting positions A to G indicate the direction toward the sound emitting portion (for example, a bell) of the musical instrument. Further, the numerical value added for each sound emission position A to G is the average volume measured at the measurement location 40 when the performer emits the instrument from the low range to the high range at the sound emission positions A to G. Represents a value (dB). In the figure, the minimum volume (outside the brackets) and the maximum volume (inside the brackets) of the sound emitted from the instrument are shown together.

The sound emitted at the sound emission position A has a minimum volume of 67 dB and a maximum volume of 83 dB, and both of the soundproof chambers 1 and 1A have the same value.
The sound emission position B is a position where the performer emits an instrument in the + Y direction from the vicinity of the center of the passage 32, and the sound emission position C is a position in which the player plays in the −Y direction from the vicinity of the side panel 11h of the passage 32. Represents the position where a person emits an instrument.

The sound emitted at the sound emission position B of the soundproof room 1A is 57 dB at the minimum volume and 62 dB at the maximum volume, but the sound emitted at the sound emission position B of the soundproof room 1 is 54 dB at the minimum volume. The maximum volume is 59 dB.
The sound emitted at the sound emission position C of the soundproof room 1A is 59 dB at the minimum volume and 64 dB at the maximum volume, but the sound emitted at the sound emission position C of the soundproof room 1 is at the minimum volume. It is 54 dB and the maximum volume is 59 dB.

From this, the sound emitted at the sound emitting positions B and C of the soundproof chamber 1 is a value several dB lower than the sound emitted at the sound emitting positions B and C of the soundproof chamber 1A. I understand. This is because the sound emitted in the soundproof chamber 1 reaches the measurement location 40 after hitting the side panel 11 m and the volume is attenuated, whereas the sound emitted in the soundproof chamber 1A passes through the passage 32. Later, it is considered that this is because it does not attenuate by the time it reaches the measurement location 40.

The sound emitting positions D to G are all positions arranged in the sound emitting space 31.
The sound emission position D is a position where the performer emits sound from the vicinity of the side panels 11e and 11f toward the opening 22 (-X direction).
The sound emission position E is a position where the performer emits sound from the vicinity of the center of the sound emission space 31 toward the connected joiner 12c.

The sound emission position F is a position where the performer emits sound from the vicinity of the side panels 11b and 11c in the + X direction.
The sound emission position G is a position where the performer emits sound from the vicinity of the side panels 11a and 11b toward the connected joiner 12a.

Regarding the soundproof positions D to G, the volume of the sound emitted in the sound emission space 31 of the soundproof chamber 1 is emitted in the sound emission space 31 of the soundproof room 1A except for the sound emission positions G. It was found that the volume was lower than the volume of the sound.

That is, as shown in FIGS. 4 and 5, as a result of the volume measurement performed at the measurement location 40, when the performance is performed in the center of the sound emitting space 31 shown by the dotted line, the sound reverberates and the volume increases. found. However, at the sound emission position G, a slight sound leakage may occur from the connecting portion of the connecting joiner 12a at the corner (the connecting portion between the side panels 11a and 11b and the connecting joiner 12a), and the volume during performance increases. It turned out.
Therefore, if the performer brings the bell closer to the side panels 11a and 11b from 10 cm to 30 cm instead of the connecting portion of the connecting joiner 12a, sound leakage from the connecting portion can be reduced and the soundproofing effect can be improved. is assumed.

In this way, in any of the soundproof chambers 1 and 1A, the sound source emits sound in the sound emitting space 31, and the volume is attenuated. However, the measured value of the volume of the performance performed inside the soundproof room 1 (sound emission space 31) is 2 dB lower on average than the volume of the performance performed inside the soundproof room 1A. That is, it was found that the soundproof chamber 1 is provided with the side panel 11 m, so that the soundproof performance is higher than that of the soundproof chamber 1A.

Therefore, when the performer plays inside the soundproof chamber 1, the volume of the sound leaking to the outside of the soundproof chamber 1 is reduced. For example, the volume of woodwind instruments (oboe, flute, etc.) is reduced from 78db to 64db and 14db (about one-fifth).
Here, it means that the volume is reduced by 1.1 times at 1db, 4 times at 12db, 10 times at 20db, and 100 times at 40db. In addition, as a result of volume measurement, the volume of 70 dB (for example, singing loudly) becomes 40 dB (for example, whispering or quiet residential area) by configuring the soundproof room 1. It turned out to be alleviated.

In order to further enhance the soundproofing performance of the soundproofing chamber 1, the length of the sixth soundproofing wall along the second direction may be equal to or greater than the width of the passage 32 along the second direction. For example, a side panel 11n indicated by a two-dot chain line may be provided in the + X direction of the side panel 11m, and the side panels 11m and 11n may be connected by a connecting joiner 12m. In this case, the passage 32 is longer than the passage 32 shown in FIG. 3 by the amount of the side panel 11n. Therefore, the number of times the sound emitted in the sound emitting space 31 is reflected on the passage 32 increases, and the volume is further attenuated.

The soundproof chamber 1 according to the first embodiment described above is configured by combining a plurality of side panels 11 and ceiling panels 13. Then, the side end portion of the adjacent side panel 11 can be installed by fitting it into the recessed portion of the connecting joiner 12. Therefore, when assembling the soundproof chamber 1, no tool other than a stepladder is required, and even a weak person can easily hold the panel or install the soundproof chamber 1.

Further, once the soundproof room is installed in the room, the installation location of the soundproof room 1 can be changed without major construction work. Further, the seller of the soundproof room 1 designates the side panel 11, the connecting joiner 12, the ceiling panel 13 and the ceiling joiner 14 as the destination designated by the user of the soundproof room 1 in the same manner as the bed and the home appliance which are ordinary furniture. It can be sent to and does not require large-scale construction or equipment.

In addition, in the conventional anechoic chamber, the panel itself that constitutes the anechoic chamber is heavy, and it is necessary to hang the panel using a crane or to have multiple adult men hold the panel by hand, which makes the installation work large. rice field. On the other hand, in the soundproof room 1 according to the present embodiment, the user himself / herself can assemble the soundproof room 1.

As described above, the soundproof room 1 according to the present embodiment can be installed in a rental house or a wooden apartment because the panel is lightweight and it is not necessary to fix the panel in the room with screws or nails. The side panel 11, the connecting joiner 12, the ceiling panel 13, and the ceiling joiner 14 are all made of a disaster prevention material or a flameproof material. The weight of each side panel 11 is as light as about 5 kg. Therefore, each part can be carried by a general elevator. Therefore, it is possible for the person and the assistant to assemble, disassemble, or move the soundproof chamber 1 according to the present embodiment.

Further, the biggest drawback of the conventional simple or small (about 1 to 2 tatami mats) soundproof room is that it is difficult to install an air conditioner in the soundproof room, and it is difficult to adjust the room temperature and ventilate. However, in the soundproof room 1 according to the present embodiment, the air blown from the air conditioner provided outside the soundproof room 1 passes through the passage 32 to air-condition or ventilate the inside of the soundproof room 1. Therefore, the temperature inside the soundproof chamber 1 can be adjusted by the air conditioner.

Further, the conventional soundproof room is provided with a door for the user to enter and exit the soundproof room. In general, a strong door is often used together with a door frame, and the weight of the door and the door frame is also heavy. Since the conventional soundproof room requires a strong frame for attaching the soundproof door, the soundproof room is heavy, and it is difficult to install the soundproof room in a wooden house or a rental house.

On the other hand, the soundproof chamber 1 according to the present embodiment has an opening in a part of the side surface, and has a structure that does not form a closed space. Therefore, the soundproof chamber 1 according to the present embodiment does not require a door by absorbing the straight-ahead sound by the side panel 11 until it goes to the corner or the exit. Further, since the soundproof chamber 1 is configured not to be provided with a door, it is not necessary to install a door frame. As described above, in the soundproof room 1, the sales cost and the installation cost can be reduced by the amount that the parts of the door and the door frame are unnecessary.

In addition, since the conventional soundproof room has a high degree of airtightness, it is easy for a person in the soundproof room to generate a peculiar tinnitus sound (high-pitched sound). However, the soundproof chamber 1 according to the present embodiment is not completely closed because the openings 21 and 22 are provided. Therefore, the tinnitus sound is extremely small, and the person in the soundproof room 1 is less likely to feel uncomfortable.

If the height of the side panel 11 from the floor 10 is the same as the height to the ceiling of the room in which the soundproof room 1 is installed, the ceiling panels 13a to 13c may not be installed.
Further, a stretchable rod (so-called tension rod) may be provided between the floor 10 and the ceiling along the connecting joiner 12. With this rod, the inclination of the side panel 11 and the connecting joiner 12 can be suppressed.

Further, FIG. 3 shows an example in which the first to sixth soundproof walls are arranged counterclockwise from the installation position 41, but a soundproof room in which the first to sixth soundproof walls are arranged clockwise is shown. It may be configured.

[Soundproofing device]
<Problems with conventional soundproofing devices>
Next, before explaining the soundproofing device according to the first embodiment of the present invention, the problems of the conventional soundproofing device will be described.
Conventionally, in order to soundproof a sound generated from a certain direction, a soundproof device installed in the traveling direction of the sound has been used. Conventional soundproofing devices are often installed in rooms instead of anechoic chambers. However, since the conventional soundproofing device is formed for the purpose of blocking sound, it has a large and heavy specification, and is often an even more expensive product.

In addition, the conventional soundproofing device requires installation work for each room. Since the size of the conventional soundproofing device is large and heavy with respect to the size of the installation place of the soundproofing device, it is difficult to install the conventional soundproofing device in a rental house or a wooden apartment.

In this way, the conventional soundproofing device is not easy to install in the room, and in order to enhance the soundproofing performance of the conventional soundproofing room, it is necessary to stop the ventilation as much as possible, and there is a trade-off between the soundproofing performance and the ventilation. Was in a relationship. In view of such a situation, there has been a demand for a soundproofing device that is easy to install and can be ventilated or air-conditioned even while having high soundproofing performance. Hereinafter, a configuration example and a usage example of the soundproofing device according to a plurality of embodiments of the present invention will be described.

<Soundproofing device configuration example>
Next, a configuration example of the soundproofing device according to the first embodiment of the present invention will be described with reference to FIGS. 6 to 10.
FIG. 6 is a perspective view showing an overall configuration example of the soundproofing device 2.
The soundproofing device 2 is installed in either the passage 32 of the soundproofing chamber 1 shown in FIG. 3 or the passage 32 of the soundproofing chamber 1A shown in FIG.

The soundproofing device 2 includes a plurality of shielding members 51a to 51e (an example of a shielding portion), a holding frame 54, and a carriage 55, which are arranged so as to be vertically overlapped with respect to the floor 10. When the shielding members 51a to 51e are not distinguished in the following description, they are described as "shielding member 51". The shielding member 51 sends the wind blown from the air conditioner into the passage 32, and shields the sound transmitted from the sound emitting space 31 to the passage 32.

The holding frame 54 (an example of the holding portion) is composed of two support members 54a and 54c perpendicular to the floor surface of the floor 10 and two support members 54b and 54d parallel to the floor surface of the floor 10. It is composed. The support members 54a and 54c are provided with fulcrum portions 55a to 55e corresponding to the shielding members 51a to 51e.

The shielding member 51a is composed of two main shielding plates 52a (an example of a main shielding portion) and a sub-shielding plate 53a (an example of a sub-shielding portion). The widths of the main shielding plate 52a and the sub-shielding plate 53a in the X direction are the same. Further, the main shielding plate 52a is attached to the fulcrum portion 55a of the support members 54a and 54c of the holding frame 54. The main shielding plate 52a can rotate within a predetermined angle in the vertical (± Z) direction with the fulcrum portion 55a as a fulcrum. Further, the sub-shielding plate 53a can rotate at an arbitrary angle with respect to the front end portion of the main shielding plate 52a.
The other shielding members 51b to 51e have the same configuration as the shielding member 51a.

The holding frame 54 (an example of the support portion) is attached to the carriage 55 and holds a plurality of shielding members 51a to 51e at predetermined intervals. A plurality of wheels 56 are attached to the carriage 55. The dolly 55 can move on the floor 10. A stopper may be attached to the wheel 56. By attaching a stopper to the wheel 56, the soundproofing device 2 can be fixed at an arbitrary position.

<Example of using soundproofing device>
FIG. 7 is a side view showing an example of using the soundproofing device 2.
The soundproofing device 2 shown in FIG. 6 is arranged with the front side facing the sound source or the direction in which the sound flows and the back side facing the direction in which the air conditioner 3 is located. Therefore, in the following description, the front side of the soundproofing device 2 shown in FIG. 6 is referred to as a “sound source side”, and the back side of the soundproofing device 2 is referred to as an “air conditioner side”.

At the end of the support member 54b, an inclination changing portion 59 that can change the inclination of the plurality of shielding members 51 (particularly, the main shielding plates 52a to 52e) is provided. The plurality of shielding members 51 are in a state of being tilted by an angle θ1 ° with respect to the vertical direction of the floor 10 (floor surface), for example. As the tilt changing portion 59, for example, a cord connected to the same position on the main shielding plates 52a to 52e is used. Of course, other members other than the cord may be used as the tilt changing portion 59.

The user of the soundproofing device 2 can change the inclination of the main shielding plates 52a to 52e to the same angle by pulling the inclination changing portion 59. Then, following the changed inclination of the main shielding plates 52a to 52e, the inclination of the sub-shielding plates 53a to 53e on the sound source side also changes. However, the sub-shielding plates 53a to 53e on the sound source side are always tilted so as to face downward from the connection points with the main shielding plates 52a to 52e. Then, the sub-shielding plate 53a and the flow path deforming member 57b are such that the sound emitted by the sound source is reflected by the sub-shielding plate 53a or the flow path deforming member 57b at least once when it passes through the flow path. Is placed in. Further, the main shielding plate 52a, the sub-shielding plate 53a, and the flow path deforming member 57b are subjected to soundproofing (pasting of a bubble member such as a sponge).

On the surface (upward surface) of the main shielding plate 52b, a flow path deforming member 57b that is inclined from the air conditioner side to the sound source side is provided. The flow path deformation member 57b (an example of the flow path deformation portion) is a member formed between two adjacent shielding members 51a and deforms the flow path through which air flows. The flow path is formed so that the area of the flow path outlet 58c through which the air flows out is smaller than that of the flow path inlet 58a in which the air flows in, and the area of the flow path inside 58b is the area of the flow path inlet 58a due to the flow path deforming member 57b. It is deformed to a smaller size.

The main shielding plates 52a and 52b are arranged substantially in parallel when the soundproofing device 2 is viewed from the side. The main shielding plate 52a and the sub-shielding plate 53a are formed in a flat plate shape. Two adjacent main shielding plates 52a and 52b form a flow path inlet 58a. The main shielding plate 52b is provided with a flow path deforming member 57b. Therefore, between the back surface (downward surface) of the main shielding plate 52a arranged on the upper side of the main shielding plate 52b and the front surface (upward surface) of the flow path deforming member 57b, from the air conditioner side to the sound source side. It is gradually narrowing. Therefore, the flow path deforming member 57b can be deformed so that the flow path narrows from the flow path inlet 58a toward the flow path outlet 58c.

Further, of the two adjacent shielding members 51a and 51b, the flow path outlet 58c is formed by the secondary shielding plate 53a provided on one shielding member 51a and the main shielding plate 52a provided on the other shielding member 51a. To. Further, the space between the main shield plates 52b and 52c, the space between the main shield plates 52c and 52d, and the space between the main shield plates 52d and 52e are configured in the same manner as between the main shield plates 52a and 52b.

Further, as the soundproofing process applied to the shielding member 51, for example, the front surface and the back surface of the main shielding plates 52a to 52e may be covered with a member having a material or shape that easily attenuates sound, such as a raised material. The flow path deforming members 57b to 57e formed on the surfaces of the main shielding plates 52b to 52e are also covered with a member having a material or shape that easily attenuates sound. Therefore, the volume of the sound that hits the main shielding plates 52a to 52e and the flow path deforming members 57b to 57e is attenuated.

Next, the air flow on the air conditioner side of the soundproofing device 2 will be described.
As shown in FIG. 7, the air (warm air or cold air) blown from the air conditioner 3 passes through the soundproofing device 2 from the air conditioner side of the soundproofing device 2. Here, according to Bernoulli's theorem, it is known that the smaller the area of the flow path through which air (fluid) passes, the higher the velocity of air when exiting the flow path is higher than the velocity of air when entering the flow path. Has been done.

Therefore, it is assumed that the space sandwiched between the back surface of the main shielding plate 52a and the front surface of the flow path deforming member 57b is an air flow path. When the soundproofing device 2 is provided in the passage 32 shown in FIG. 3, the front side and the back side of the soundproofing device 2 shown in FIG. 7 are closed by the side panel 11 constituting the passage 32. .. Therefore, the air in the space sandwiched between the main shielding plate 52a and the flow path deforming member 57b does not leak from the front side and the back side of the soundproofing device 2.

The area of the flow path inlet 58a on the air conditioner side becomes narrower toward the inside of the flow path due to the flow path deformation member 57b. Therefore, the area inside the flow path 58b where the height of the convex portion of the flow path deforming member 57b is maximum with respect to the main shielding plate 52b is the smallest. Then, the area of the flow path outlet 58c on the sound source side becomes wider again, but is smaller than the area of the flow path inlet 58a. Of the passages formed by the adjacent shielding members 51, the area on the side where the wind blown from the air conditioner 3 goes out to the passage 32 is made smaller than the area on the side where the wind enters.

Therefore, the speed of the air blown from the air conditioner side to the sound source side is higher at the flow path outlet 58c on the sound source side than at the flow path inlet 58a on the air conditioner side. That is, the air blown from the air conditioner 3 to the soundproofing device 2 is blown to the sound source side of the soundproofing device 2 at a speed higher than that when taken in from the air conditioner side. The air blown into the space on the sound source side of the soundproofing device 2 circulates in this space and is then pushed out of this space. Therefore, the space on the sound source side of the soundproofing device 2 is sufficiently ventilated.

Next, the flow of sound on the sound source side of the soundproofing device 2 will be described.
The sound emitted from the sound source side collides with the main shielding plate 52a and the sub-shielding plate 53a. Then, the sound that collides with the main shielding plate 52a is reflected to the sound source side or flows into the space between the main shielding plates 52a and 52b. However, the sound is difficult to be transmitted in the direction of air inflow. This also applies between the main shielding plates 52b and 52c, between the main shielding plates 52c and 52d, and between the main shielding plates 52d and 52e.

The user tilts the shielding member 51 substantially perpendicular to the floor surface by returning the tilt changing portion 59 to the original position while the soundproofing device 2 is not used (for example, when the soundproofing device 2 is cleaned up). Can be made to. In this case, the air blown from the air conditioner 3 is substantially shielded by the shielding member 51. On the other hand, the user can tilt the shielding member 51 at a predetermined angle with respect to the floor surface by pulling the tilt changing portion 59 while using the soundproofing device 2 (for example, when the soundproofing device 2 is installed). can. In this case, the air blown from the air conditioner 3 passes through the shielding member 51, but the sound emitted from the sound source side is substantially shielded.

In the soundproofing device 2 according to the first embodiment described above, the shielding member 51 shields the sound emitted from the sound source side. Therefore, the sound leaking from the soundproofing device 2 to the air conditioner side is sufficiently attenuated. On the other hand, the shielding member 51 can allow the air flowing in from the air conditioner side to flow out to the sound source side. Therefore, since cold air or warm air is blown to the sound source side, it is possible to reduce the discomfort of the performer or the like on the sound source side. In order to improve the soundproofing performance of the soundproof room by using the conventional soundproofing device, the ventilation must be stopped, and the environment of the room is deteriorated if there is no ventilation. , It is possible to solve the conflicting problems of conventional soundproofing and ventilation (ventilation).

If the soundproofing device 2 is installed at the entrance / exit of the soundproofing chambers 1 and 1A without a door, the soundproofing performance of the soundproofing chambers 1 and 1A can be further improved. The soundproofing device 2 is preferably installed near the opening 21 of the passage 32 of the soundproof chambers 1 and 1A shown in FIG. 3, but is installed inside the passage 32 and near the opening 22 of the passage 32. May be good.

Further, even in the existing soundproof chamber (conventional soundproof chamber), the door structure may be replaced with a door having a structure using the same shielding member 51 as the soundproof device 2. In this case, it is impossible to ventilate in the conventional soundproof room, but it becomes possible to ventilate by the door having the same structure as the soundproof device 2.

Also, in a small room separated by a partition, such as a business meeting room, the voice may be heard and it may be difficult to hear the conversation. Therefore, by using the soundproofing device 2 for the partition, not only the difficulty in hearing the voice can be eliminated, but also the ventilation in the small room can be improved.

Further, since the conventional soundproofing device is provided for the purpose of blocking sound, many of them are large, heavy, and expensive. For this reason, conventional soundproofing devices could not be installed in rental housing or wooden apartments. However, the soundproofing device 2 according to the present embodiment has a portable size, so that the installation location is not limited.

Although the soundproofing device 2 cannot be expected to be simple and completely soundproofed, it can be used as a simple soundproofing chamber by arranging the soundproofing device 2 in the direction in which the sound is to be blocked or surrounding the four sides of the sound source. Further, it is possible to have a structure in which the shielding members 51 are stacked in multiple layers, or a structure in which a plurality of soundproofing devices 2 are arranged side by side. As described above, the size of the soundproofing device 2 can be freely selected regardless of the installation location. Therefore, it is possible to expect a quiet effect to the extent that it does not bother the neighborhood of the environment in which the soundproofing device 2 is installed.

By attaching a plate material to the side surface portion of the soundproofing device 2, air may not leak from the side surface portion of the soundproofing device 2.

Further, FIG. 7 shows an example in which air is blown from the air conditioner 3 installed at a position higher than the soundproofing device 2. In addition, air may be blown from a blower placed on the floor 10 toward the air conditioner side of the soundproofing device 2. In this case, the angle of the shielding member 51 may be further tilted to make the shielding member 51 horizontal to the floor 10, or the height of the end portion of the shielding member 51 on the air conditioner side may be lower than the height of the end portion on the sound source side. good.

Further, the soundproofing device 2 may be installed in the passage 32 of the soundproofing chamber 1A shown in FIG. Even in this case, the soundproofing device 2 can attenuate the volume of the sound emitted from the sound emitting space 31 of the soundproofing chamber 1A.

Further, a screw type dial or the like fitted in the fulcrum portions 55a to 55e shown in FIG. 6 may be used as the tilt changing portion, and only a part of the shielding member 51 may be tilted at an arbitrary angle.

[Second Embodiment]
Next, a configuration example of the soundproofing device according to the second embodiment will be described with reference to FIG.
FIG. 8 is a side view showing a configuration example of the soundproofing device 2A according to the second embodiment.

The configuration of the soundproofing device 2A is almost the same as that of the soundproofing device 2 shown in FIGS. 6 and 7, but the configurations of the shielding members 61a to 61e are different from those of the shielding members 51a to 51e.

The soundproofing device 2A includes shielding members 61a to 61e.
The shielding member 61a is a member composed of a flat surface portion and a curved portion. Therefore, the main shielding portion of the shielding member 61a is formed by a flat surface portion, and the sub-shielding portion is formed by a curved portion that curves upwardly. The length of the flat surface portion is substantially equal to the length of the main shielding plate 52a of the shielding member 51a shown in FIG. The flat surface portions of the shielding members 61a to 61e are in a state of being tilted by an angle θ2 ° with respect to the vertical direction of the floor 10 (floor surface), for example. The curved portion has a shape in which the auxiliary shielding plate 53b is curved so as to be convex upward. Although the flat surface portion and the curved portion of the shielding member 61a are integrated, the divided flat surface portion and the curved portion may be connected at the time of installation of the soundproofing device 2A.

The flow path deforming members 57b to 57e are also provided on the surfaces of the main shielding plates 52b to 52e shown in FIG. 8, respectively. Therefore, also in the soundproofing device 2A shown in FIG. 8, the area of the flow path inlet 58a on the air conditioner side becomes narrower toward the inside of the flow path by the flow path deforming member 57b, as in the soundproofing device 2 shown in FIG. Therefore, the area of the inside of the flow path 58b becomes smaller. Then, in the soundproofing device 2A, the area of the flow path outlet 58c is the smallest.

Therefore, the speed of the air blown from the air conditioner side to the sound source side is higher at the speed inside the flow path 58b than at the flow path inlet 58a on the air conditioner side. Then, the velocity at the flow path outlet 58c on the sound source side is further higher than the velocity of the air inside the flow path 58b.

As described above, the shielding members 61a to 61e provided in the soundproofing device 2A send out the air blown from the air conditioner side to the sound source side as in the shielding members 51a to 51e according to the first embodiment. The sound emitted from the sound source side is blocked. Therefore, the soundproofing device 2A can also be improved in soundproofing performance as compared with the conventional soundproofing device.

Further, the area of the flow path outlet 58c of the soundproofing device 2A is smaller than the area of the flow path outlet 58c of the soundproofing device 2 shown in FIG. Therefore, it is difficult for sound to enter the flow path outlet 58c of the soundproofing device 2A from the sound source side, so that the soundproofing device 2A has higher soundproofing performance than the soundproofing device 2.

[Third Embodiment]
Next, a configuration example of the soundproofing device according to the third embodiment will be described with reference to FIGS. 9 and 10.
FIG. 9 is a side view showing a configuration example of the soundproofing device 2B according to the third embodiment. In particular, FIG. 9 is a side view showing the first usage example.

The soundproofing device 2B has the same configuration example as the soundproofing device 2 shown in FIGS. 6 and 7. The main shielding plates 52a to 52e are all tilted by an angle θ3 ° with respect to the vertical direction of the floor 10. On the upper surfaces of the main shielding plates 52b to 52e, flow path deforming members 63b to 63e projecting into the air flow path are provided, respectively. The flow path deforming members 63b to 63e have a function of deforming the flow path of the air blown from the air conditioner 3.

Similar to the soundproofing device 2 shown in FIG. 7, in the soundproofing device 2B shown in FIG. 9, the area of the flow path inlet 58a on the air conditioner side becomes narrower toward the inside of the flow path due to the flow path deforming member 63b, and the flow flows. The area of the road interior 58b becomes smaller. In addition, the area of the flow path outlet 58c is also small. However, in the first usage example shown in FIG. 9, the areas of the flow path inside 58b and the flow path outlet 58c are both about the same. Therefore, the sound emitted from the sound source side easily escapes to the air conditioner side through the flow path.

FIG. 10 is a side view showing a second use example of the soundproofing device 2B according to the third embodiment.
In the soundproofing device 2B, the main shielding plates 52a to 52e are all tilted by an angle θ4 ° with respect to the vertical direction of the floor 10 (floor surface). Here, the angle θ4 ° shown in FIG. 10 is smaller than the angle θ3 ° shown in FIG. Therefore, the main shielding plates 52a to 52e shown in FIG. 10 are in a state of standing upright from the main shielding plates 52a to 52e shown in FIG. Then, the area of the flow path inlet 58a on the air conditioner side becomes narrower toward the inside of the flow path due to the flow path deformation member 63b. The area inside the flow path 58b where the height of the convex portion of the flow path deforming member 63b is maximum with respect to the main shielding plate 52b is the smallest. Then, the area of the flow path outlet 58c on the sound source side becomes wider again, but is smaller than the area of the flow path inlet 58a.

By setting the main shielding plates 52a to 52e to stand against the floor 10 in this way, the sound emitted from the sound source side is easily reflected by the main shielding plates 52a to 52e and the sub-shielding plates 53a to 53e. Become. Further, since the area of the flow path outlet 58c on the sound source side is small, the sound emitted from the source side is difficult to propagate through the flow path. Therefore, when the soundproofing device 2B is used in the second usage example, the soundproofing performance can be improved as compared with the case where the soundproofing device 2B is used in the first usage example.

Then, the triangular prism-shaped flow path deforming members 57b to 57e shown in FIG. 8 may be provided above the main shielding plates 52b to 52e of the soundproofing device 2B shown in FIGS. 9 and 10. Further, the flow path deforming members 63b to 63e on the flat plate provided in the soundproofing device 2B may be provided in the main shielding plates 52b to 52e of the soundproofing device 2 shown in FIG. 7, and the soundproofing members shown in FIG. 8 may be provided. It may be provided on the main shielding plates 61b to 61e of the device 2A.

It should be noted that the present invention is not limited to the above-described embodiments, and it goes without saying that various other application examples and modifications can be taken as long as they do not deviate from the gist of the present invention described in the claims.
For example, each of the above-described embodiments describes the configurations of the soundproof chamber and the soundproof device in detail and concretely in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to those including all the configurations described.

Further, it is possible to replace a part of the configuration of the embodiment described here with the configuration of another embodiment, and further, it is possible to add the configuration of another embodiment to the configuration of one embodiment. It is possible. Further, it is also possible to add, delete, or replace a part of the configuration of each embodiment with another configuration.
In addition, the control lines and information lines indicate what is considered necessary for explanation, and do not necessarily indicate all the control lines and information lines in the product. In practice, it can be considered that almost all configurations are interconnected.

1 ... Soundproof room, 2 ... Soundproofing device, 11 ... Side panel, 12 ... Connected joiner, 13 ... Ceiling panel, 14 ... Ceiling joiner, 21,22 ... Opening, 31 ... Sound emission space, 32 ... Passage, 40 ... Measurement Location, 51 ... shielding member, 55a to 55e ... fulcrum, 57b to 57e, 63b to 63e ... flow path deformation member, 58a ... flow path inlet, 58b ... flow path inside, 58c ... flow path outlet, 59 ... tilt changing part

Claims (10)

A first soundproof wall in which one end is installed at a predetermined installation position and the other end is installed in the first direction from the installation position.
A second soundproof wall in which one end is installed at an installation position starting from the other end of the first soundproof wall and the other end is installed in a second direction substantially perpendicular to the first direction.
One end is installed at an installation position starting from the other end of the second soundproof wall, and the other end is installed in a third direction opposite to the first direction, which is longer than the first soundproof wall. Soundproof wall and
One end is installed at the installation position starting from the other end of the third soundproof wall, the other end is installed in the fourth direction opposite to the second direction, and the fourth is longer than the second soundproof wall. Soundproof wall and
A soundproof room provided with a fifth soundproof wall having one end installed at an installation position starting from the other end of the fourth soundproof wall, the other end being installed in the first direction, and longer than the third soundproof wall. .. The space surrounded by the first soundproof wall, the second soundproof wall, the third soundproof wall, and a part of the fourth soundproof wall is defined as a sound emitting space in which a sound source can emit sound.
The other part of the fourth soundproof wall and the space surrounded by the fifth soundproof wall are used as passages that can be moved by a person staying in the sound emitting space.
The soundproof chamber according to claim 1, wherein a gap is provided between one end of the first soundproof wall and the fourth soundproof wall so that the person can move. A sixth soundproof wall is provided, in which one end is installed at an installation position starting from the other end of the fifth soundproof wall and the other end is installed in the second direction.
The soundproof room according to claim 1 or 2, wherein the passage is a space surrounded by another part of the fourth soundproof wall, the fifth soundproof wall and the sixth soundproof wall. The soundproof chamber according to claim 3, wherein the length of the sixth soundproof wall along the second direction is equal to or greater than the width of the passage along the second direction. The soundproof room according to claim 4, further comprising the sound emitting space and the ceiling portion installed above the passage. The first soundproof wall to the sixth soundproof wall, and the ceiling portion are all disassembled one or more panels, and the plurality of panels are arranged side by side in the same direction and connected, or in a substantially vertical direction. The soundproof room according to claim 5, which is composed of a connected joiner to be connected. The soundproof room according to claim 5, wherein the soundproofing space, the first soundproof wall to the sixth soundproof wall on the side facing the passage, and the ceiling portion are subjected to soundproofing. One of claims 1 to 6, wherein the passage is provided with a soundproofing device having a plurality of shielding members that send the air blown from the air conditioner into the passage and shield the sound transmitted from the sound emitting space to the passage. The soundproof room described in the section. The soundproof chamber according to claim 8, wherein the area formed by the adjacent shielding member on the side where the wind blown from the air conditioner goes out to the passage is smaller than the area on the side where the wind enters. The soundproof chamber according to claim 9, wherein the soundproof device includes a tilt changing portion capable of changing the tilt of the plurality of shielding members.

Images