JP2001174012A - Noise reduction ventilating unit and sound-absorbing material unit used in the unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve arrangement workability of a sound-absorbing material and manufacturing ability of a unit, in a sound attenuation ventilation unit, having a ventilation function and a sound attenuation function and used as the frame material of a sash frame. SOLUTION: A noise reducing material unit 4, in which a flow passage 5 is formed, is situated at the internal part of a cylinder body 2, having both ends in the direction of a length closed and where an external vent port 2e communicating with the outside of a room is formed into a piece in a peripheral direction and an internal vent port 2f communicating with the inside of a room is formed in other piece than the piece. One end of the flow passage 5 of the noise reducing material unit 4 is caused to communicate with the external vent port 2e, and the other end of the flow passage 5 of the sound attenuation material unit 4 is caused to communicate with the internal vent port 2f.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound-absorbing ventilation unit which has a ventilation function and a sound-deadening function and is used in a form incorporated in a sash frame or the like, or used alone, and a sound-absorbing material unit used therefor.

[0002]

2. Description of the Related Art When it is desired to cut off external sound while introducing outside air into any one of the frame members of a sash frame installed in an opening, a conventional method is disclosed in U.S. Pat. As shown in No. 57-178690, outside air inlets are formed on the outside of the frame material and on each piece of finding on the indoor side.
The sound absorbing material is stored inside the frame material.

The flow path through which the outside air taken into the frame material from the outside air introduction port on the outside of the room reaches the outside air introduction port on the inside of the room is formed so as to be surrounded by a sound absorbing material. Since the outside air is absorbed by the sound absorbing material while passing through the flow passage, the effective opening of the outside sound is improved.
It is effective to lengthen the flow path through which outside air passes as in No. 94.

However, in any case, since the single sound absorbing material is individually stored in the frame material and attached to the inner peripheral surface of the frame material, the work of arranging the sound absorbing material on the frame material tends to be complicated. is there. Also, since it is necessary to directly arrange the sound-absorbing material directly on the inner peripheral surface of the frame material, the frame material cannot be formed at once as a hollow cross-sectional shape material. It is necessary to form a two-part open cross-sectional shape, combine the two shapes after joining the sound-absorbing material, and join them together.

In view of the above background, the present invention proposes a unit having good workability of arranging sound absorbing material and good manufacturability.

[0006]

SUMMARY OF THE INVENTION In the present invention, by simply arranging a sound absorbing material unit inside a cylindrical body, the workability of arranging the sound absorbing material and the manufacturability of the sound absorbing and ventilating unit composed of the cylindrical body and the sound absorbing material unit are improved. Enhance.

[0007] The cylindrical body has a shape in which both ends in the longitudinal direction are closed, and an outer ventilation port communicating with the outside of the room is formed on one of the circumferential pieces, and an internal ventilation port communicating with the room is formed on the other piece. A flow path is formed in the sound absorbing unit. The flow path of the sound absorbing material unit is formed substantially in the longitudinal direction of the cylindrical body or in a direction inclined to that direction. In raising, it is advantageous that it is formed to face the length direction of the cylinder.

The flow path is formed so as to be surrounded by one of the sound absorbing materials constituting the sound absorbing material unit and one of the pieces of the cylindrical body, and formed by being surrounded by the sound absorbing material as described in claim 6. Is done. In the latter case, since the periphery of the flow path is surrounded by the sound absorbing material, the sound absorbing effect is high. The cylindrical body and the sound absorbing material unit allow one end of the flow path of the sound absorbing material unit to communicate with the external vent of the cylindrical body,
It is combined so that the other end of the flow path of the sound absorbing material unit communicates with the internal vent of the cylindrical body.

The sound absorbing material is housed inside the cylindrical body as a unit, so that the sound absorbing material alone is housed inside the frame material independently and attached to the inner peripheral surface of the frame material by bonding or the like. Workability of material placement is improved. The sound-absorbing material unit may be a combination of a molded article of a porous sound-absorbing material such as a sound-absorbing board, a combination of molded articles of a fiber-based sound-absorbing material such as glass wool or felt, or a porous sound-absorbing material. It is composed of a combination of a molded product of a material and a molded product of a fiber-based sound-absorbing material, but if it is assembled in a form inscribed in the tubular body, or if it is combined, the sound-absorbing material unit is restrained by the tubular body. Since there is no need to adhere to the inner peripheral surface, the operation of arranging the sound absorbing material unit inside the cylinder is further simplified.

[0010] In particular, when a plurality of sound absorbing materials molded as described in claim 14 are assembled together by bonding or other means to form a sound absorbing material unit, the sound absorbing materials can be freely combined and arranged. The number of channels and the routes of the channels can be freely determined. The positional relationship between the piece on which the external ventilation port is formed and the piece on which the internal ventilation port is formed is arbitrarily determined according to the installation position at the opening of the sound deadening ventilation unit, for example, facing the outdoor side of the sound deadening ventilation unit. When the outside air is introduced from the piece toward the piece facing the indoor side, the piece having the external ventilation hole and the piece having the internal ventilation hole face each other. In this case, the outside air can be introduced while the silencing ventilation unit is stored in the sash frame without protruding from the sash frame to the outside of the room.

In the case of the second aspect, if the external ventilation port and the internal ventilation port are formed to face each other as described in the third aspect, a flow path longer than the length of one reciprocation of the cylinder in the length direction is secured. Since the distance from the external air vent to the internal air vent can be increased, the noise reduction effect of the external sound can be improved.

According to a fourth aspect of the present invention, the piece in which the external ventilation port is formed and the piece in which the internal ventilation port is formed intersect with each other so that the external ventilation port is not exposed to the outside in appearance. Allow to configure. In the seventh aspect, by forming a plurality of flow paths of the sound absorbing material unit, the surface area of the flow path surrounded by the sound absorbing material with which the outside air comes into contact is increased, and the effect of suppressing external sound is improved.

According to the eighth aspect of the present invention, one of the pieces including the both ends of the tubular body is made to be an openable and closable lid, and the sound absorbing material unit is made detachable from the tubular body through the lid. This eliminates the need to divide and mold into a plurality of sections, thereby improving the manufacturability of the cylindrical body. In this case, maintenance and replacement of the sound absorbing material unit can be performed, and the work can be easily performed.

According to a ninth aspect of the present invention, an auxiliary cylinder having both ends in the length direction closed, at least a part of one of the pieces in the circumferential direction being open, and a vent formed in the other piece is opened. The external sound is reduced before reaching the room by attaching the piece thus formed so as to face the piece provided with the internal ventilation hole of the cylindrical body.

Since the auxiliary cylinder is added, the distance until the external sound reaches the room becomes longer, and the sound energy is further attenuated due to the large reflection and diffusion of the sound. In particular, since the energy passes through the sound absorbing material unit, the energy is once reduced, and the reflected light is reflected on the inner peripheral surface of the auxiliary cylinder, and then reaches the room through the ventilation port of the auxiliary cylinder, the noise reduction effect of the noise reduction ventilation unit is improved.

In this case, the noise reduction effect is further increased by attaching a sound absorbing material to the inner peripheral surface of the auxiliary cylinder as described in claim 10, and the filter is provided in the ventilation hole of the auxiliary cylinder as described in claim 11. The air taken into the room can be cleaned by detachably attaching the.

In the twelfth aspect, the silencing ventilation unit is combined with a casing in which a shutter or a blind is stored, and the silencing ventilation unit is integrated with the outer periphery of the casing or housed inside the casing, so that the silencing ventilation unit projects outside the room. Even when a sound deadening ventilation unit is installed, the sound deadening ventilation unit can be made inconspicuous from the outside of the room, and the external design of the casing with the sound deadening ventilation unit can be improved.

In this case, by incorporating a shutter box in the casing, it is possible to take measures against typhoons and crime prevention. If an external screen or awning is incorporated in the casing, it is possible to easily add a function of improving the indoor environment, such as blocking sunlight.

Furthermore, by disposing the silencing ventilation unit close to the room side while combining the silencing ventilation unit with the casing, the space near the room where the silencing ventilation unit is arranged can be used as a space for incorporating a blind or a curtain box. It can be used as a space for installing.

According to the thirteenth aspect, the shape of the cylindrical body of the sound deadening ventilation unit is made eaves-shaped, so that when the sound deadening ventilation unit is installed outside the room, the sound deadening ventilation unit has the same function as the eaves. Also in this case, since the sound deadening and ventilation unit itself has the shape of the eaves, the sound deadening and ventilation unit becomes inconspicuous from the outdoor side, and the appearance design of the sound deadening and ventilated eaves is improved. If an external screen or awning is incorporated in the casing, it is possible to easily add a function of improving the indoor environment, such as blocking sunlight.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A silencing ventilation unit 1 according to claim 1 has a hollow cylindrical body 2 as shown in FIG. 1, and a sound absorbing material unit disposed inside the cylindrical body 2 and having a flow path 5 formed therein. 4 The cylindrical body 2 has a shape in which both ends in the longitudinal direction are closed, and as shown in FIGS. 3 (b), 5 and 6, an external ventilation port which communicates with one of the circumferential pieces to the outside of the room. 2e, an internal ventilation port 2f communicating with the room is formed in a piece other than the piece 2e.

In FIG. 5, prospective pieces 2a, 2a facing vertically
Then, the tubular body 2 is formed in a box shape from the finding pieces 2b, 2b facing each other in the expected direction, and the tubular body 2 is formed in a free sectional shape such as a semicircle or a trapezoid. When the cylindrical body 2 is formed by extrusion molding, both ends in the length direction are closed by joining the small edge plates 2c and 2c.

An outer ventilation hole 2e is formed in the finding piece 2b located on the outside of the room, and an inner ventilation hole 2f is formed in the finding piece 2b located on the indoor side. The pieces provided with the vents 2f face each other, but the external vents 2e are attached to any of the pieces facing the outside.
2f may be formed on any piece facing the room. In the case of FIG. 5, the external vent 2e and the internal vent 2f may be formed at positions facing each other.

As shown in FIG. 6, the sound deadening ventilation unit 1 has one end of the flow path 5 of the sound absorbing material unit 4 and the external ventilation port 2 e of the cylindrical body 2.
And the other end of the flow path 5 of the sound absorbing material unit 4 and the cylindrical body 2
Are configured so as to communicate the internal ventilation holes 2f. As shown in FIGS. 1 to 4, the sound absorbing material unit 4 is constituted by a porous sound absorbing material, a combination of a fiber sound absorbing material, or a combination of a porous sound absorbing material and a fiber sound absorbing material. 2 and 3 show the case where the same type of sound absorbing material 3 is used, and FIG. 4 shows the case where a different type of sound absorbing material 3 is used. In each case, a plurality of molded sound absorbing materials can be freely combined and arranged. The sound absorbing material unit 4 is formed by assembling the materials 3 by bonding, tape fixing, fitting, and the like while forming a flow path 5 surrounded by the sound absorbing material 3.

FIGS. 1 to 4 show a block-like structure obtained by combining a plurality of rod-shaped or plate-shaped sound-absorbing materials 3 or a combination of a rod-shaped sound-absorbing material 3 and a plate-shaped sound-absorbing material 3. It shows a case where it is assembled and housed inside the tubular body 2 in the assembled state. In the housed state, the state of being fixed to the inner peripheral surface of the cylindrical body 2 is maintained by adhesion or frictional force to the inner peripheral surface of the cylindrical body 2 or by engaging the cylindrical body 2 in the length direction.

The flow path 5 of the sound absorbing material unit 4 is oriented in the length direction of the cylinder 2 as shown in FIG. 6 or is inclined in the length direction of the cylinder 2 as shown in FIG. It is formed facing the direction, but it is sufficient if it is formed so that outside air can be guided from the external vent 2e to the internal vent 2f.

FIGS. 2 to 4 show the case where the flow path 5 is formed so as to be surrounded by the sound absorbing material 3, and FIGS.
And a case where it is formed so as to be surrounded by one of the pieces of the cylindrical body 2. 2 and 6 show the case where a plurality of flow paths 5 are formed, and FIG. 4 shows the case where one flow path 5 is formed.

FIG. 8 shows a case where a plurality of sound-absorbing material units 4 in which the flow path 5 is formed in the longitudinal direction of the cylinder 2 when the outer ventilation port 2e and the inner ventilation port 2f are formed at positions facing each other. The following shows an example of the arrangement in the case where there is a case. (a) shows a case where the inside of the cylindrical body 2 is divided in the width direction, and the sound absorbing material unit 4 is arranged in the middle part in the longitudinal direction for each of the divided spaces. After passing through the flow path 5 of the material unit 4 and exiting from the flow path 5 to the space of the cylindrical body 2, it again passes through the flow path 5 of the sound absorbing material unit 4 on the side of the internal ventilation port 2 f and reaches the internal ventilation port 2 f. I do.

(B) shows an end of the sound absorbing material unit 4 in each divided space formed obliquely, and an end of the sound absorbing material unit 4 on the side of the external vent 2e is directed toward the external vent 2e. Vent 2f
The sound absorbing material in which the end of the sound absorbing material unit 4 on the side is arranged toward the internal ventilation port 2f and the flow path 5 faces the width direction of the cylindrical body 2 on the opposite side of the external ventilation port 2e and the internal ventilation port 2f. This is a case where the unit 4 is arranged and the flow paths 5 and 5 of the sound absorbing material units 4 and 4 having the flow path 5 facing the length direction of the cylindrical body 2 are continuous. In this case, the outside air introduced into the cylindrical body 2 from the external ventilation port 2e always passes through the flow path 5 of the sound absorbing material unit 4 until it is delivered to the room through the internal ventilation port 2f.

One of the two ends, including the two ends, is a lid 2d which can be freely opened and closed. The sound absorbing material unit 4 is removably housed in the cylinder 2 through the lid 2d. In FIG. 5, the finding piece 2b or the prospective piece 2a of the cylindrical body 2 is used as the lid 2d, but the fore-edge plate 2c may be used as the lid 2d. The lid 2d is rotatably supported by the main body of the cylindrical body 2 by a hinge or the like, and is detachably joined to the main body of the cylindrical body 2.

FIG. 6 shows an external ventilation port 2e and an internal ventilation port 2f formed at opposite ends in the longitudinal direction of the cylindrical body 2 at opposite ends, and the sound absorbing material unit 4 is provided between both ends in the longitudinal direction of the cylindrical body 2. A case is shown in which a straddling length is given and both ends of the sound absorbing material unit 4 are arranged so as to face the external ventilation port 2e and the internal ventilation port 2f. in this case,
Since the end face of the sound absorbing material unit 4 is formed obliquely, the flow path 5 can be made longer than when the sound absorbing material unit 4 is oriented in a direction perpendicular to the length direction, so that the noise reduction efficiency is increased.

In the case of FIG. 6, as shown in FIG.
The outside air taken in from 2e enters the flow path 5 of the sound absorbing material unit 4 without touching the surface facing the external ventilation port 2e,
Reach the internal vent 2f. Since the outside air does not directly touch the inside of the cylindrical body 2, heat bridges and cold bridges in the external ventilation port 2 e and the internal ventilation port 2 f are prevented, and the thermal insulation of the cylindrical body 2 is secured. In particular, as shown in FIG.
If a heat-insulated shape member joined with a heat-insulating plate interposed therebetween is used, the heat insulating property is further improved. FIG. 2C shows an example of assembling the sound absorbing unit 4 corresponding to the case of FIG.

FIG. 9 shows an auxiliary cylinder 21 in which both ends in the longitudinal direction are closed, at least a part of one of the pieces in the circumferential direction is opened, and a vent 21a is formed in the other piece. A case is shown in which the opened piece faces and faces the piece on which the internal ventilation port 2f of the cylindrical body 2 is formed. The auxiliary cylinder 21 is also formed in a free sectional shape similarly to the cylinder 2.

In this case, the external sound passes through the sound-absorbing material unit 4 as indicated by the arrow, and is attenuated by the auxiliary cylinder 21 from the internal ventilation port 2f before reaching the room. FIG. 10 shows how the auxiliary cylinder 21 is attached to the cylinder 2. FIG. 11 shows a case where the sound absorbing material 3 is attached to the inner peripheral surface of the auxiliary cylinder 21. External sound entering from the external ventilation port 2e propagates to the piece facing the external ventilation port 2e, passes through the piece and is emitted toward the indoor side, and thus faces the external ventilation port 2e as shown in FIG. By arranging the sound absorbing material 3 on the indoor side surface of the piece, the effect of blocking external sound is enhanced.

FIGS. 12 and 13 show a case where an outer ventilation port 2e and an inner ventilation port 2f are formed in two intersecting pieces of the pieces constituting the cylindrical body 2, and a filter 21b is provided in the ventilation port 21a of the auxiliary cylindrical body 21. Shows a case in which is detachably attached. The shape of the outer peripheral surface of the cylinder 2 is
14- (a) and (b) are determined according to the state of fitting into the sash frame 6, etc., and are additionally joined to the sash frame 6 as shown in Fig. 15- (a) Has a shape having at least a mounting portion 2g joined to the frame around the opening, and FIG.
As shown in (b), when the sash frame 6 is used as any of the frame members, the sash frame 6 has a holding portion 2h for holding a shoji or a panel. In the case of Fig. 15- (b), the upper frame of the sash frame 6
6a is removed.

In the case of FIG. 14- (b), since the cylinder 2 is used as an upper frame, a screw hole 2i is formed in the holding portion 2h, and the holding portion 2h is formed as shown in FIG. 15- (b). The sash frame 6 penetrates the vertical frame 6c and is joined to the vertical frame 6c by screws 7 screwed into the screw holes 2i. In any case, as shown in FIG. 16, the sash frame 6 with the cylindrical body 2 (silencer ventilation unit 1) is inserted into the opening as a normal sash frame and fixed. Figure
Reference numeral 17 denotes a case where the silencing ventilation unit 1 is housed alone in an opening formed for ventilation. In the case of FIG. 17, the mounting portions 2g are formed on the upper, lower, left and right sides of the cylindrical body 2.

FIG. 18 shows a case where a mounting portion 2g is also formed on the surface of the cylindrical body 2 on the sash frame 6 side, and the mounting portion 2g and the mounting portion 6b formed on the upper frame 6a of the sash frame 6 are directly joined to each other. FIG.
An example in which the two mounting portions 2g and 6b are indirectly joined via a sash frame 6 is shown. In the case where the mounting portions 2g and 6b are indirectly joined as shown in FIG.
When joining to 6c, the cylinder 2 is joined via a cubic.

FIG. 20 shows a case where a holding portion 2h having a screw hole 2i is formed on the sash frame 6 side of the cylindrical body 2 as shown in FIG. 15- (b), and the sash frame 6 is held at the position of the removed upper frame 6a. An example of joining when a portion 2h is joined to a vertical frame 6c is shown. FIG. 21 shows a case where the sound deadening ventilation unit 1 is joined to the outer periphery of four sash frames 6.

FIG. 22 shows an example in which the silencing ventilation unit 1 is incorporated in a part of the discard frame 9 attached to the opening, and the sash frame 6 is stored in the discard frame 9. FIG. 23 shows a case where the silencer ventilation unit 1 is used as a blind placed between step windows adjacent to each other vertically, and FIG. An example in the case of using No. 1 is shown. FIG. 25 shows an example in which the silencing ventilation unit 1 is used as an eave located outside the opening at the opening or incorporated in the eave.

FIGS. 26 and 27 show a case where the silencing ventilation unit 1 is combined with a casing 10 in which shutters and blinds are stored. 26 shows an example in which the shutter is integrated on the casing 10 of the shutter, and FIG. 27 shows an example in which the shutter is accommodated in the casing 10 incorporating the blind.

[0041]

According to the first aspect of the present invention, a sound absorbing structure is provided in which a flow path is formed inside a cylindrical body in which an external ventilation port is formed on one of the circumferential pieces and an internal ventilation port is formed on the other piece. Since the sound absorbing / ventilating unit is configured by arranging the sound absorbing units, the workability of arranging the sound absorbing material and the manufacturability of the sound absorbing / ventilating unit including the cylinder and the sound absorbing material unit are improved.

According to the second aspect, since the piece in which the external ventilation port is formed and the piece in which the internal ventilation port is formed face each other, external air can be introduced from the piece facing the outside to the piece facing the room, and the noise can be reduced. The outside air can be introduced while the ventilation unit is placed inside the sash frame without protruding from the sash frame to the outside of the room.

According to the third aspect of the present invention, since the external ventilation port and the internal ventilation port are opposed to each other in the second aspect, it is possible to secure a flow path that is longer than the length of one reciprocation of the cylindrical body in the length direction, and the external air is externally ventilated. The distance from the mouth to the internal vent can be made longer, and the effect of suppressing external sound is improved.

According to the fourth aspect of the present invention, the piece of the cylindrical body where the external ventilation port is formed intersects with the piece where the internal ventilation port is formed.
In appearance, the tubular body can be configured such that the external vent is not exposed outside the room. In the fifth aspect, since the sound absorbing material unit is configured by combining a plurality of sound absorbing materials, the operation of arranging the sound absorbing material unit inside the cylindrical body is further simplified.

According to the sixth aspect, since the flow path is formed so as to be surrounded by the sound absorbing material, the sound deadening effect is high. According to the seventh aspect, since a plurality of flow paths of the sound absorbing material unit are formed, the surface area of the flow path surrounded by the sound absorbing material is increased, and the effect of suppressing external sound is improved. In claim 8, in order to make any of the pieces including the pieces at both ends of the cylindrical body openable and closable, and to make the sound absorbing material unit detachable in the cylindrical body through the lid, a plurality of shaped materials are used in manufacturing the cylindrical body. There is no need to divide and mold, and the productivity of the cylindrical body is improved. In this case, maintenance and replacement of the sound absorbing unit can be performed, and the work is also facilitated.

In the ninth aspect, at least a part of any one of the circumferential pieces is opened, and the auxiliary cylinder having a vent formed in the other piece is used as an internal vent of the tubular body. Since it is installed facing the piece on which the sound is formed, the distance until the external sound reaches the room becomes longer, and the energy of the sound can be further attenuated.

According to the tenth aspect, the sound absorbing material is attached to the inner peripheral surface of the auxiliary cylinder, so that the noise reduction effect is further enhanced. In the eleventh aspect, the filter is detachably attached to the ventilation port of the auxiliary cylinder, so that the filter is taken into the room. The air can be cleaned.
According to claim 12, since the silencing ventilation unit is combined with the casing in which the shutter or the blind is stored, even when the silencing ventilation unit is installed by projecting outside, the silencing ventilation unit is made inconspicuous from the outdoor side, and a casing with a silencing ventilation unit. Appearance design can be improved.

In this case, if a shutter box is built in the casing, typhoon and crime prevention measures can be taken, and if an external screen or awning is built in the casing, the indoor environment can be improved, for example, the solar radiation can be cut off. Functions can be easily added.

Further, if the sound deadening and ventilation unit is arranged close to the room side while the sound deadening and ventilation unit is combined with the casing, the space near the room where the sound deadening and ventilation unit is disposed can be used as a space for incorporating a blind or a curtain box can be used. It can be used as a space for installation.

According to the thirteenth aspect, since the shape of the cylindrical body of the sound deadening ventilation unit is made eaves-like, when the sound deadening ventilation unit is installed outside the room, the sound deadening ventilation unit can have the same function as the eaves. In addition, since the silencing ventilation unit itself has the shape of the eaves, the silencing ventilation unit becomes less noticeable from the outside of the room, and the external design of the eaves with the silencing ventilation unit is improved. Also in this case, if an external screen or awning is incorporated in the casing, a function of improving the indoor environment, such as the ability to block sunlight, can be easily added.

According to the fourteenth aspect, since a plurality of molded sound absorbing materials are assembled to form a sound absorbing material unit, the sound absorbing materials can be freely combined and arranged, and the number of arranged flow paths and the paths of the flow paths can be freely determined. I can decide.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a procedure for manufacturing a sound deadening ventilation unit.

FIG. 2 (a) is a perspective view showing how to assemble the sound absorbing material,
(b) is a perspective view showing a case where the end faces of the sound absorbing material are assembled, and (c) is a perspective view showing a case where the end faces are shifted.

3 (a) is a perspective view showing an assembling procedure of a plate-shaped sound absorbing material, and FIG. 3 (b) is a transverse sectional view of FIG. 3 (a).

FIG. 4 is a perspective view showing a configuration example of a sound absorbing material unit made of different kinds of sound absorbing materials.

FIG. 5 is a perspective view showing a procedure for storing a sound absorbing material block in a cylindrical body.

FIG. 6 (a) is a perspective view showing a state in which the sound absorbing material block is housed in a box when both ends are directed to the outside air inlet side, and FIG.
2 is a cross-sectional view of FIG.

FIG. 7A is a perspective view showing an example of a sound deadening ventilation unit in a case where a flow path surrounded by a sound absorbing material and one of pieces of a cylindrical body is formed, and FIG. FIG. 2 is a perspective view showing a sound absorbing material unit.

8 (a) and 8 (b) are plan views showing examples of arrangement in the case of using a plurality of sound absorbing material units each having a flow path formed in the longitudinal direction of a cylindrical body.

FIG. 9 is a perspective view showing a state in which an auxiliary cylinder is combined with a cylinder.

FIG. 10 is a perspective view showing an attached state of an auxiliary cylinder to the cylinder.

FIG. 11 is a cross-sectional view showing a case where a sound absorbing material is arranged inside an auxiliary cylinder.

FIG. 12 is a longitudinal sectional view showing a case where a filter is arranged in a vent of an auxiliary cylinder.

FIG. 13 is a cross-sectional view of FIG.

14A is a perspective view showing a box body having a mounting portion, and FIG. 14B is a perspective view showing a box body having a mounting portion and a holding portion.

15 (a) is a perspective view showing an example of the combination of the box and the sash frame of FIG. 14- (a), and FIG. 15 (b) is an example of the combination of the box and the sash frame of FIG. 14- (b) FIG.

FIG. 16 is a perspective view showing how to store the sash frame incorporating the sound deadening ventilation unit in the opening.

FIG. 17 is a perspective view showing a procedure for storing the silencing ventilation unit alone in the opening.

FIG. 18 is a perspective view showing a case where the silencing ventilation unit is directly joined to a sash frame.

FIG. 19 is a perspective view showing a case where the silencing ventilation unit is joined to a sash frame using a blind eye.

FIG. 20 is a perspective view showing a case where the silencing ventilation unit is incorporated in a sash frame.

FIG. 21 is a perspective view showing a case where a sound deadening ventilation unit is joined to four circumferences of a sash frame.

FIG. 22 is a perspective view showing a case where the silencing ventilation unit is incorporated in a waste frame.

FIG. 23 is a perspective view showing a case where the silencing ventilation unit is used as a blind of a step window.

FIG. 24 is a perspective view showing a case where the sound deadening ventilation unit is used as a stand for a continuous window.

FIG. 25 is a perspective view showing a case where the sound deadening ventilation unit is used as an eave.

FIG. 26 is a longitudinal sectional view showing a case where the silencing ventilation unit is used in combination with a casing of a shutter.

FIG. 27 is a longitudinal sectional view showing a case where the silencing ventilation unit is used in combination with a blind casing.

[Explanation of symbols]

1 ... silencing ventilation unit, 2 ... cylindrical body, 2a ... prospect piece, 2b ... finding piece, 2c ... small plate, 2d ... lid, 2e ...
External vent, 2f… Internal vent, 2g Mounting part, 2h…
Holder, 2i Screw hole, 21 Auxiliary cylinder, 21a
Vent 21b Filter 3 Sound absorbing material 4 Sound absorbing unit 5 Channel 6 Sash frame 6a Upper frame 6b Mounting part 6c Vertical frame , 7 ... screw, 8 ... blind, 9 ... disposal frame, 10 ... casing.

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 2E036 JA01 JA06 JA12 JB01 JB02 JB03 JB05 KA06 LA01 MA00 MA02 3L056 BA04 BC01 3L080 AA01 AC05 AD02 BE02 BE09

Claims (14)

[Claims] 1. A cylindrical body in which both ends in a longitudinal direction are closed, and an outer ventilation port communicating with the outside of the room is formed on one of the circumferential pieces, and an inner ventilation port communicating with the inside of the room is formed on the other piece. Inside, a sound absorbing material unit in which a flow path is formed is arranged, one end of the flow path of the sound absorbing material unit communicates with the external vent, and the other end of the flow path of the sound absorbing material unit communicates with the internal vent. Silent ventilation unit composed of: 2. A piece of a cylindrical body having an outer vent formed therein and a piece having an inner vent formed therein face each other.
The described silencing ventilation unit. 3. The sound deadening ventilation unit according to claim 2, wherein the external ventilation port and the internal ventilation port face each other. 4. The silencing ventilation unit according to claim 1, wherein the piece of the cylindrical body having the outer ventilation port and the piece having the inner ventilation port intersect. 5. The sound absorbing and ventilating unit according to claim 1, wherein the sound absorbing material unit is configured by combining a plurality of sound absorbing materials. 6. The sound-absorbing ventilation unit according to claim 1, wherein the flow path of the sound-absorbing material unit is surrounded by a sound-absorbing material. 7. The sound deadening ventilation unit according to claim 1, wherein a plurality of flow paths of the sound absorbing unit are formed. 8. The cylinder according to claim 1, wherein at least one of the two ends of the cylinder includes a lid that can be opened and closed, and the sound absorbing material unit is detachable from the cylinder through the lid. The silencing ventilation unit described in. 9. An auxiliary cylinder body having both ends in the longitudinal direction closed, at least a part of one of the pieces in the circumferential direction being opened, and a vent formed in the other piece. The silencing ventilation unit according to any one of claims 1 to 8, wherein the unit is attached so as to face a piece having an internal ventilation hole formed in the cylindrical body. 10. The sound deadening ventilation unit according to claim 9, wherein a sound absorbing material is attached to an inner peripheral surface of the auxiliary cylinder. 11. The silencing ventilation unit according to claim 8, wherein a filter is detachably attached to a vent of the auxiliary cylinder. 12. The sound deadening ventilation unit according to claim 1, wherein the sound deadening ventilation unit is integrated with a casing in which a shutter or a blind is stored, or is housed in the casing. 13. The sound deadening ventilation unit according to claim 1, wherein the shape of the cylindrical body is an eave shape. 14. A sound-absorbing material unit used in the sound-absorbing ventilation unit according to claim 1, wherein a plurality of molded sound-absorbing materials form a flow path surrounded by the sound-absorbing materials. Sound absorbing unit assembled while.