AU2015417648B2

AU2015417648B2 - Ventilation device

Info

Publication number: AU2015417648B2
Application number: AU2015417648A
Authority: AU
Inventors: Kinya Onodera; Isao Sato
Original assignee: Sahara KK
Current assignee: Sahara KK
Priority date: 2015-12-15
Filing date: 2015-12-15
Publication date: 2018-09-20
Anticipated expiration: 2035-12-15
Also published as: JP6342072B2; WO2017103990A1; CN107532449B; KR101950633B1; AU2015417648A1; CN107532449A; JPWO2017103990A1; KR20170116087A

Abstract

A device body 10 of a ventilation device comprises an inside first main wall 12a that has a first ventilation opening 12x, and an outside second main wall 15a that has a second ventilation opening 15x. The ventilation device further comprises a first and second operation plate 20, 30 that are supported in the device body 10 so as to be able to rotate, and a first and second spring 26, 36 that bias the first and the second operation plate 20, 30 in a direction to separate, respectively, from the first and second main wall 12a, 15a. First and second packing 25, 35 that are elastic and permeable to air are mounted, respectively, on the first and second operation plate 20, 30. When the outside is at positive pressure during strong winds, the first operation plate 20 approaches the first main wall 12a due to the wind pressure from the outside and ventilation is performed through only the first packing 25. When the outside is at negative pressure during strong winds, the second operation plate 30 approaches the second main wall 15a due to the wind pressure from the inside and ventilation is performed through only the second packing 35.

Description

FIELD OF THE INVENTION [0001]

The present invention relates to a ventilation device used for maintaining an indoor environment good by exchanging a dirty air inside of a building with a fresh air outside of the building.

BACKGROUND OF THE INVENTION [0002]

The ventilation device disclosed in Patent Document 1 as a first embodiment is to be incorporated into a top rail of a window sash of an ordinary building. The ventilation device includes a horizontally extending device body and an actuating plate. The device body has a main wall having ventilation openings formed therein. An upper edge of the actuating plate is supported by the device body in a slidable and rotatable manner near the main wall of the device body. The actuating plate is horizontally slid by manual operation of an operation tab. Due to an action of a cam mechanism, the actuating plate is movable toward and away from the main wall in the process of being slid. Thereby, degree of opening of the ventilation openings formed in the main wall is adjusted.

[0003]

An air impermeable packing is disposed on a surface of a lower edge portion of the actuating plate on the main wall side. The packing is abutted against the main wall when the actuating plate comes close to the main wall. Thereby, an interface between the actuating plate and the main wall is sealed, making an amount of ventilation substantially zero.

[0004]

The ventilation device disclosed in Patent Document 2 is to be installed in a wall of a high-rise building or the like. Below a main wall of a horizontally extending device body, an actuating plate is disposed in parallel to the main wall.

The actuating plate is movable upward and downward by operation of an operation lever. Thereby, degree of opening of ventilation openings formed in the main wall is adjusted. An air impermeable packing is disposed opposite side edges of the actuating plate. The packing is abutted against the main wall when the actuating plate is moved upward. Thereby, an interface between the actuating plate and the main wall is sealed, making an amount of ventilation substantially zero.

[0005]

In the ventilation devices of Patent Documents 1 and 2 mentioned above, if a strong wind blows outside when the actuating plate is at a position spaced from the main wall, the wind may enter an inside of the building. Thereby, air may be excessively supplied to the inside of the building. To cope with this problem, as disclosed in Patent Documents 3 and 4, ventilation devices were developed in which ventilation openings are automatically closed by a wind pressure when the wind is strong.

[0006]

In the ventilation devices disclosed Patent Documents 3 and 4, an actuating plate is rotatably supported on an outdoor side near a main wall where the ventilation openings are formed. The actuating plate is kept at a position spaced from the main wall by self-weight or by a force of a spring when a wind is not blowing. When a strong wind is blowing, the actuating plate is abutted against the main wall by the wind pressure against the self-weight or the force of the spring, thereby closing the ventilation openings, and thus keeping the strong wind from entering inside of the building.

PRIOR ART DOCUMENTS

PATENT DOCUMENTS [0007]

Patent Document 1: Japanese Unexamined Patent Application Publication No.

2005-264425

Patent Document 2: Japanese Unexamined Patent Application Publication No.

2010-203707

Patent Document 3: Japanese Unexamined Utility Model Application Publication No. S57-185891

Patent Document 4: Japanese Unexamined Patent Application Publication No.

H7-233980

SUMMARY OF THE INVENTION [0008]

As mentioned above, in the ventilation devices of Patent Documents 3 and 4, when the ventilation device receives a strong wind (when an air pressure outside of the building is markedly higher than an air pressure inside of the building), the actuating plate closes the ventilation openings, thereby keeping the air from excessively entering inside of the building via the ventilation openings. However, when the ventilation device is installed on a side of the building opposite to a side that receives a strong wind, for example, and the air pressure outside of the building is negative, (that is, contrary to the above, when the air pressure inside of the building is markedly higher than the outside of the building), the actuating plate keeps the ventilation openings open, and the air inside of the building may be excessively exhausted.

[0009]

In the ventilation device of Patent Document 3, when the wind is strong and the actuating plate closes the ventilation openings, ventilation is not performed at all.

In the ventilation device of Patent Document 4, even when the wind is strong and the actuating plate closes the ventilation openings, the ventilation openings are not completely closed. Small area portions of the openings are left open, and the ventilation can be performed through the open portions. However, due to the wind passing though the small openings, wind noises may be generated. Moreover, when the strong wind passes through small openings, a turbulent flow (vortex flow) may be generated near the openings. The actuating plate may be vibrated by the turbulent flow, tapping the main wall, which may generate a noise.

SOLUTION TO THE PROBLEM [0010]

To solve the problem mentioned above, the present invention provides a ventilation device comprising: a device body including a first main wall having a first ventilation opening, a second main wall having a second ventilation opening and a ventilation passage through which the first ventilation opening and the second ventilation opening communicate with one another; a first actuating plate rotatably supported by the device body such that the first actuating plate is movable toward and away from the first main wall; a second actuating plate rotatably supported by the device body such that the second actuating plate is movable toward and away from the second main wall; a first spring that urges the first actuating plate in a direction away from the first main wall; a second spring that urges the second actuating plate in a direction away from the second main wall; a first packing having an elasticity and an air permeability, the first packing disposed on at least one of opposing surfaces of the first actuating plate and the first main wall at a location away from a rotational axis of the first actuating plate; and a second packing having an elasticity and an air permeability, the second packing disposed on at least one of opposing surfaces of the second actuating plate and the second main wall at a location away from a rotational axis of the second actuating plate, wherein: the first actuating plate is disposed on an outdoor side with respect to the first main wall; the first actuating plate is moved toward the first main wall by a wind pressure from an outside of the building; the second actuating plate is disposed on an indoor side with respect to the second main wall; and the second actuating plate is moved toward the second main wall by a wind pressure from an inside of the building.

[0011]

According to the features mentioned above, when an air pressure outside of the building where the ventilation device is installed is markedly higher than an air pressure inside of the building such as when receiving a strong wind, the first actuating plate, receiving the wind pressure from outside, is moved closer to the first main wall against a force of the first spring. Thereby, ventilation is performed substantially only through the first packing, thus keeping the air from excessively entering inside of the building. To the contrary, when the air pressure inside of the building where the ventilation device is installed is markedly higher than the air pressure outside of the building such as when the ventilation device is disposed on a side of the building opposite to a side that receives a strong wind, the second actuating plate, receiving the wind pressure from inside of the building, is moved closer to the second main wall against a force of the second spring. Thereby, ventilation is performed substantially only through the second packing, thus keeping the air from being excessively exhausted to the outside of the building.

[0012]

As mentioned above, the ventilation can be performed avoiding excessive air flow when the wind is strong. Moreover, since an amount of compression of the packing is increased as the wind pressure is increased, and a flowable cross-sectional area of the packing is decreased, a volume of air flow can be constrained. Furthermore, since the air flows through the first packing or the second packing, generation of a wind noise can be prevented and generation of turbulent flow can be constrained to prevent generation of noise accompanying vibration of the actuating plate.

[0013]

Preferably, the first main wall is disposed on the indoor side; the second main wall is disposed on the outdoor side; and the first actuating plate, the second actuating plate, the first spring and the second spring are disposed in the ventilation passage between the first main wall and the second main wall.

According to the features mentioned above, since the first actuating plate, the second actuating plate, the first spring and the second spring are housed in the device body, generation of a trouble can be constrained.

[0014]

Preferably, the device body has a hollow elongated structure and a pair of closing members that closes opposite end openings of the elongated structure; and the first actuating plate, the second actuating plate, the rotational axis of the first actuating plate and the rotational axis of the second actuating plate extend in a longitudinal direction of the elongated structure.

[0015]

Preferably, the device body is provided with a first stopper and a second stopper; and the first stopper and the second stopper respectively catch the first actuating plate and the second actuating plate at respective predetermined separated positions, thereby restricting rotation of the first actuating plate and the second actuating plate.

According to the features mentioned above, the first actuating plate and the second actuating plate can be held at respective separated positions.

[0016]

Preferably, the rotational axis of the first actuating plate is disposed in a first direction orthogonal to the longitudinal direction of the elongated structure with respect to the first ventilation opening; and the rotational axis of the second actuating plate is disposed in a second direction opposite to the first direction with respect to the second ventilation opening.

According to the features mentioned above, reverse positions of the first actuating plate and the second actuating plate enables the first actuating plate and the second actuating plate to be disposed close to each other, thereby, enabling downsizing of the ventilation device. Moreover, interference among structural components including the first actuating plate, the second actuating plate, the first spring and the second spring can be avoided even when the first actuating plate and the second actuating plate are disposed close to each other because the first stopper and the second stopper restrict the rotation of the first actuating plate and the second actuating plate in an opening direction.

More preferably, the first actuating plate and the second actuating plate are parallel to each other at the respective predetermined separated positions.

[0017]

Preferably, each of the pair of closing members of the device body is provided with the first stopper and the second stopper; the pair of first stoppers catch opposite ends of the first actuating plate in a longitudinal direction of the first actuating plate; and the pair of second stoppers catch opposite ends of the second actuating plate in a longitudinal direction of the second actuating plate.

According to the features mentioned above, the first actuating plate and the second actuating plate can be surely restricted from being rotated.

[0018]

In one aspect of the present invention, the device body is incorporated into a window sash; the first main wall and the second main wall are vertically oriented; a lot of the first ventilation openings are formed in the first main wall such that the first ventilation openings are arranged in a longitudinal direction of the first main wall spaced from one another; the ventilation device further comprises a manually actuating plate abutted against a surface of the first main wall on the indoor side and slidably supported by the device body; and the manually actuating plate has a lot of control openings formed therein at the same pitch as the first ventilation openings.

According to the features mentioned above, when cooling or heating is performed inside of the building, efficiency of the cooling or heating can be enhanced by bringing an amount of ventilation to zero or constraining the amount of ventilation using the manually actuating plate.

[0019]

In another aspect of the present invention, the first main wall and the second main wall are horizontally oriented; the first main wall is disposed above the second main wall; the first actuating plate is disposed below the first main wall; the second actuating plate is disposed above the second main wall; the first actuating plate is urged by a self-weight of the first actuating plate and the first spring in a direction away from the first main wall; and the ventilation device further comprises an auxiliary spring that urges the first actuating plate toward the first main wall.

According to the features mentioned above, even if the first actuating plate is subjected to the force in the direction away from the first main wall by the self-weight thereof, a portion of or an entirety of the self-weight is cancelled out by the auxiliary spring, and thereby, the first actuating plate can be surely rotated upward toward the first main wall by the wind pressure.

[0020]

The first packing and the second packing are made of a foamed resin material having an open-cell structure.

According to the features mentioned above, the packing material having desired elasticity and air permeability can be easily obtained.

ADVANTAGEOUS EFFECTS OF THE INVENTION [0021]

According to the present invention, the amount of air entering into the inside of the building can be appropriately controlled and the amount of air being exhausted to the outside of the building can be appropriately controlled. Moreover, the generation of noise can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS [0022]

FIG. 1 is a perspective view of a ventilation device according to a first embodiment of the present invention, with a middle portion thereof in a longitudinal direction omitted.

FIG. 2 is a cross-sectional view of the ventilation device, showing first and second actuating plates respectively away from first and second main walls when wind is light.

FIG. 3 is a cross-sectional view of the ventilation device, showing the first actuating plate close to the first main wall when wind is strong and pressure outside of the building is positive.

FIG. 4 is a cross-sectional view of the ventilation device, showing the second actuating plate close to the second main wall when wind is strong and the pressure outside of the building is negative.

FIG. 5 is a cross-sectional view of the ventilation device according to a second embodiment of the present invention.

FIG. 6 is a cross-sectional view of the ventilation device according to a third embodiment of the present invention.

FIG. 7 is an enlarged cross-sectional view of a main portion of FIG. 6.

FIG. 8 is a cross-sectional view of the ventilation device according to a fourth embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS [0023]

A ventilation device according to a first embodiment of the present invention will be described herein after with reference to FIGS. 1 to 4. The ventilation device is of a type to be incorporated into a window sash. As shown in FIG. 1, the ventilation device 1 includes a device body 10. The device body 10 has a horizontally extending hollow elongated structure 10a and a pair of closing members 10b (only one of the members is shown in FIG. 1) closing opposite end openings of the elongated structure 10a. A middle portion of the elongated structure 10a in a longitudinal direction is omitted in FIG. 1, making the elongated structure 10a shown in FIG. 1 look shorter than its real length.

[0024]

As shown in FIGS. 1 and 2, the elongated structure 10a is made by connecting two extrusion molded members 11, 15. The molded member 11 has an indoor side vertical portion 12, a lower connecting portion 13 and an upper connection portion 14.

[0025]

The lower connecting portion 13 has a reverse U-shaped configuration. An upper edge portion of a glass plate 101 is fitted in the lower connecting portion 13. The upper connecting portion 14 has a pair of ribs protruded upward, which are inserted in a top rail 102 of a window sash. Thereby, the ventilation device 1 is incorporated into the window sash.

[0026]

An upper portion of the indoor side vertical portion 12 of the molded member 11 is recessed to the outdoor side compared with a lower portion thereof.

The upper portion of the indoor side vertical portion 12 is provided as a main wall 12a (first main wall). The main wall 12a has many ventilation openings 12x (first ventilation openings) formed therein. The ventilation openings 12x have vertically elongated configurations and are arranged in a longitudinal direction of the main wall 12a at equal intervals.

[0027]

The indoor side vertical portion 12 has engagement grooves 12b, 12c formed therein. The engagement grooves 12b, 12c are respectively disposed adjacent to upper and lower edges of the main wall 12a on the indoor side with respect to the main wall 12a. A manually actuating plate 40 to be described later is slidably supported by the engagement grooves 12b, 12c.

[0028]

A shaft bearing portion 12d is formed in a portion where the main wall 12a and the upper connecting portion 14 intersect each other. The shaft bearing portion 12d is disposed adjacent to the main wall 12a on the outdoor side of the main wall 12a. The shaft bearing portion 12d is located above (first direction) the ventilation openings 12x. An actuating plate 20 (first actuating plate) to be described later is rotatably supported by the shaft bearing portion 12d.

[0029]

The molded member 15 has a generally L-shaped cross-sectional configuration. The molded member 15 has a vertical main wall 15a (second main wall) facing outdoors and a horizontal portion 15b protruded toward the indoor side from a lower edge of the main wall 15a. Upper and lower edges of the main wall 15a are respectively connected to edges of the upper connecting portion 14 and the lower connecting portion 13 of the molded member 11 on the outdoor side. The main wall 15a has many ventilation openings 15x (second ventilation openings) formed therein. The ventilation openings 15x have vertically elongated configurations and are arranged in a longitudinal direction of the main wall 15a at equal intervals. The ventilation openings 15x are disposed below the ventilation openings 12x.

[0030]

A shaft bearing portion 15d is formed in a portion where the main wall 15a and the horizontal portion 15b of the molded member 15 intersect each other. The shaft bearing portion 15d is disposed adjacent to the main wall 15a on the indoor side of the main wall 15a. The shaft bearing portion 15d is located below (second direction) the ventilation openings 15x. An actuating plate 30 to be described later is rotatably supported by the shaft bearing portion 15d.

[0031]

An inner space of the device body 10 is provided as a ventilation passage 16 through which the ventilation openings 12x, 15x communicate with one another. The ventilation passage 16 communicates with the inside of the building through the ventilation openings 12x and communicates with the outside through the ventilation openings 15x.

[0032]

The actuating plates 20, 30 made of extrusion molded members are received in the device body 10. A shaft portion having a circular cross-section is formed in an upper edge of the actuating plate 20 (first actuating plate). The shaft portion is inserted in the shaft bearing portion 12d of the device body 10. Thereby, the actuating plate 20 is supported by the shaft bearing portion 12d such that the actuating plate 20 can be rotated toward and away from the main wall 12a.

[0033]

A packing 25 (first packing) is disposed on a surface of the actuating plate 20 facing the main wall 12a at a lower portion (portion away from a rotational axis) of the actuating plate 20. The packing 25 extends along the actuating plate 20 through the entire length of the actuating plate 20. The packing 25 has an even thickness.

[0034]

The packing 25 is made of a foamed resin having an open-cell structure (urethane foam, for example). The packing 25 has air permeability and elasticity (cushioning characteristics) in a thickness direction. The packing 25 of this embodiment has a density of 20 to 40 Kg/m³. Packings commercially available as a filter such as a product (MF-13) by Inoac Corporation may be used as the packing 25. [0035]

The actuating plate 20 is urged in a direction away from the main wall 12a against a self-weight thereof by a plurality of extension coil springs 26 (first springs) arranged in a longitudinal direction of the actuating plate 20 spaced from one another. Opposite ends of the coil springs 26 are respectively hooked to spring hook portions protruded from a lower portion of the actuating plate 20 toward the outdoor side and spring hook portions formed in the upper connecting portion 14 of the molded member 11.

[0036]

A shaft portion having a circular cross-section is formed in a lower edge of the actuating plate 30 (second actuating plate). The shaft portion is inserted in the shaft bearing portion 15d of the device body 10. Thereby, the actuating plate 30 is supported by the shaft bearing portion 15d such that the actuating plate 30 can be rotated toward and away from the main wall 15a.

[0037]

A packing 35 (second packing) similar to the packing 25 mentioned above is disposed on a surface of the actuating plate 30 facing the main wall 15a at an upper portion (portion away from the shaft portion serving as a rotational axis) of the actuating plate 30.

[0038]

The actuating plate 30 is urged in a direction away from the main wall 15a by a plurality of extension coil springs 36 (second springs) arranged in a longitudinal direction of the actuating plate 30 spaced from one another. Opposite ends of the coil springs 36 are respectively hooked to spring hook portions protruded from an upper portion of the actuating plate 30 toward the indoor side and spring hook portions formed in the horizontal portion 15b of the molded member 15.

[0039]

Each of the pair of closing members 10b of the device body has two stoppers 28, 38 (first and second stoppers) formed therein so as to be protruded toward the ventilation passage 16. The stoppers 28, 38 restrict rotation of the actuating plates 20, 30 by the extension coil springs 26, 36, thereby locating the actuating plates 20, 30 at predetermined separated positions.

[0040]

The ventilation device 1 further includes an actuating plate 40 (manually actuating plate). The actuating plate 40 has many control openings 41 formed therein at the same pitch as the ventilation openings 12x. The control openings 41 have the same configuration as the ventilation openings 12x of the main wall 12a. The actuating plate 40 is contacted with a surface of the main wall 12a on the indoor side. Upper and lower edges of the actuating plate 40 are respectively engaged with the engagement grooves 12b, 12c of the device body 10, and thereby supported by the device body 10 so as to be slidable in the longitudinal direction.

[0041]

As shown in FIG. 1, a support plate 45 is mounted on a right end portion of the elongated structure 10a. The support plate 45 is disposed on a right side of the actuating plate 40. The support plate 45 is fixed with upper and lower edges thereof engaged with the engagement grooves 12b, 12c.

[0042]

An operation tab 46 is supported by the support plate 45 so as to be slidable in the longitudinal direction (left-right direction) of the device body 10. The operation tab 46 is connected to the actuating plate 40. The actuating plate 40 is slid between an opening position at which the control openings 41 coincide with the ventilation openings 12x of the main wall 12a and a closing position at which the control openings 41 do not coincide with the ventilation openings 12x.

[0043]

In the ventilation device 1 having the features mentioned above, when there is no wind or wind is light, the actuating plates 20, 30 are respectively spaced from the main walls 12a, 15a due to the forces of the coil springs 26, 36, and normal ventilation is performed through respective gaps between the packings 25, 35 and the main walls 12a, 15a and through the ventilation openings 12x, 15x. The actuating plate 20 is caught by the pair of stoppers 28 at opposite ends thereof and maintained at the predetermined separated position. The actuating plate 30 is caught by the pair of stoppers 38 and maintained at the predetermined separated position.

[0044]

At the respective separated positions, the actuating plates 20, 30 are inclined in parallel to each other. The coil springs 26, 36 are respectively disposed in an upper portion and a lower portion of the ventilation passage 16. Portions of the coil springs

26, 36 are located in a narrow space between the actuating plates 20, 30. In this manner, the two actuating plates 20, 30 and the two coil springs 26, 36 can be installed in a limited space between the main walls 12a, 15a disposed parallel to each other without interfering with one another.

[0045]

When the ventilation device 1 receives a strong wind and the air pressure on the outdoor side becomes positive, the actuating plate 20 receives a wind pressure in a direction to the main wall 12a. When the wind pressure is increased, the actuating plate 20 is rotated against a force of the coil spring 26 and comes near the main wall 12a as shown in FIG. 3. This makes the packing 25 contacted with the main wall 12a. As a result, the strong wind is prevented from entering the building, and thus, excessive air supply can be prevented. During that time, though the actuating plate 30 is subjected to a strong force in a direction away from the main wall 15a, the actuating plate 30 is not rotated further from the predetermined separated position because the actuating plate 30 is caught by the stoppers 38.

[0046]

Since the actuating plate 30 is located in a lower area and the actuating plate 20 is located in an upper area, the actuating plate 20 can receive the wind pressure from the outside of the building and can be rotated toward the main wall 12a without being interrupted by the actuating plate 30.

[0047]

As mentioned above, even when the actuating plate 20 comes near the main wall 12a and thereby the packing 25 is contacted with the main wall 12a over the entire length thereof and sandwiched between the actuating plate 20 and the main wall 12a, the air flows into the inside of the building through the packing 25 as indicated by an arrow in FIG. 3. It is because the packing 25 is made of the foamed resin having the open-cell structure and has air permeability. Therefore, an indoor environment can be maintained in a good condition.

When the actuating plate 20 is rotated from the separated position to a proximate position, a volume of air inflow is decreased. The elasticity and the air permeability of the packing are determined so as to secure sufficient volume of air inflow at such times.

[0048]

When the wind pressure is further increased from the wind pressure in the state shown in FIG. 3, the actuating plate 20 is further pressed toward the main wall 12a, compressing the packing 25. This compressing of the packing 25 causes a flowable cross-sectional area of the packing 25 to be decreased. Since an amount of compression of the packing 25 is increased and the flowable cross-sectional area of the packing 25 is decreased as the wind pressure is increased, increase of the volume of air flowing into the inside of the building can be constrained.

[0049]

When the actuating plate 20 is at the proximate position, the air flows into the inside of the building through a lot of narrow ventilation passages inside the packing 25. Therefore, a wind noise such as the one generated when a high-pressure air flows in through an opening surrounded by rigid materials is not generated. Moreover, since a large turbulent flow is not generated near the actuating plate 20, the actuating plate 20 is not vibrated, and a noise to be caused by such vibration is not generated, either.

[0050]

When the ventilation device 1 is installed on the side of the building opposite to the side that receives the strong wind, the air pressure outside of the building is negative, and the air inside of the building is exhausted to the outside. When a wind pressure from the inside of the building during the exhausting is increased, the actuating plate 30 is rotated toward the main wall 15a against a force of the coil spring 36. Asa result, as shown in FIG. 4, the packing 35 is abutted against the main wall 15a, preventing the air from being excessively exhausted from the inside of the building, at the same time allowing the ventilation to be performed. The packing 35 acts in a similar manner to the packing 25.

During that time, though the actuating plate 20 is subjected to a strong force in a direction away from the main wall 12a, the actuating plate 20 is not rotated further from the predetermined separated position because the actuating plate 20 is caught by the stoppers 28.

[0051]

Since the actuating plate 30 is located in the lower area and the actuating plate 20 is located in the upper area, the actuating plate 30 can receive the wind pressure from the inside of the building and can be rotated toward the main wall 15a without being interrupted by the actuating plate 20.

[0052]

In this embodiment, a degree of opening of the ventilation openings 12x can be adjusted by sliding the actuating late 40 using the operation tab 46. Thereby, an amount of air flow can be made zero or constrained to a small amount, and when the room is being cooled or heated, the efficiency of cooling or heating can be enhanced. [0053]

Other embodiments of the present invention will be described hereinafter. Same or similar reference numerals are used to designate parts that correspond to those in foregoing embodiments and description thereof will be omitted.

A ventilation device 2 according to a second embodiment shown in FIG. 5 is to be installed in a wall of a high-rise building. To describe it simply, In FIG. 5, the reference numeral 103 refers to a support frame installed in the wall of the building to support a lower edge portion of a glass plate 104. The support frame 103 is made of a horizontally extending, elongated molded member. The support frame 103 has a vertical wall 103a on an outdoor side and a horizontal wall 103b on an indoor side.

An elongated opening 103x extending in a longitudinal direction of the support frame 103 is formed in the vertical wall 103 a. A lot of ventilation holes 103y are formed in the horizontal wall 103b spaced from one another in the longitudinal direction of the support frame 103. An inner space between the vertical wall 103a and the horizontal wall 103b is provided as a passage 103z.

[0054]

A lid member 105 extending in the longitudinal direction of the support frame 103 is disposed on the horizontal wall 103b. When the lid member 105 is set down, the passage 103z is closed and when the lid member 105 is removed, the passage 103z is opened.

[0055]

The ventilation device 2 is disposed in the passage 103z through the opening 103x of the support frame 103. As with the ventilation device 1 of the first embodiment, a device body 50 of the ventilation device 2 has a hollow elongated structure 50a and closing members 50b that close opposite end openings of the elongated structure 50a. The elongated structure 50a is made by connecting two extrusion molded members 51, 55.

[0056]

One of the extrusion molded members 51 has a vertical main wall 51a (first main wall) and a horizontal portion 51b having a spring hook portion formed therein. The main wall 51a is disposed on the indoor side and has a ventilation opening 5lx. The other of the extrusion molded members 55 has a vertical main wall 55a (second main wall), upper and lower horizontal portions 55b, 55c and a flange portion 55d disposed on an extension of the main wall 55a. The main wall 55a is disposed on the outdoor side and has a ventilation opening 55x. The ventilation device 2 is mounted on the support frame 103 by fixing the flange portion 55d on the vertical wall 103a of the support frame 103.

[0057]

Dispositions and actions of actuating plates 20, 30, packings 25, 35, coil springs 26, 36 and stoppers 28, 38 are similar to those of the first embodiment. Therefore, detailed description thereof is omitted.

[0058]

A ventilation device 3 according to a third embodiment shown in FIGS. 6 and 7 is to be mounted on a support frame 103 of a high-rise building. The support frame 103 has a vertical wall 103a on an outdoor side and a horizontal wall 103b on an indoor side. A lot of elongated openings 103x’ are formed in the vertical wall 103a spaced from one another in a longitudinal direction of the support frame 103.

An elongated opening 103y’ extending in the longitudinal direction of the support frame is formed in the horizontal wall 103b. The ventilation device 3 is disposed in a passage 103z through the opening 103y’.

[0059]

A device body 60 of the ventilation device 3 has a horizontally extending hollow elongated structure 60a and closing members 60b that close opposite end openings of the elongated structure 60a. The elongated structure 60a is made by connecting two extrusion molded members 61, 65.

[0060]

One of the extrusion molded members 61 has a horizontal main wall 61a (first main wall) and a pair of flange portions 61b extending vertically downward from the main wall 61a. The main wall 61a is disposed on the indoor side and has a ventilation opening 61x (first ventilation opening). The other of the extrusion molded members 65 has a horizontal main wall 65 a (second main wall) and a pair of raised walls 65b vertically rising from opposite side edges of the main wall 65 a. The main wall 65a is disposed on the outdoor side and has a ventilation opening 65x (second ventilation opening). The pair of raised walls 65b are fixed to the pair of flange portions 61b of the molded member 61. The main wall 61a on the indoor side is disposed above the main wall 65a on the outdoor side.

[0061]

The third embodiment is different from the first and second embodiments in that the main walls 61a, 65a of the third embodiment parallel to each other extend horizontally. However, dispositions and actions of actuating plates 20, 30, packings

25, 35, coil springs 26, 36 and stoppers 28, 38 are similar to those of the first embodiment. Therefore, detailed description thereof is omitted.

[0062]

In this embodiment, the actuating plate 20 is subjected to a downward force in a direction away from the main wall 61a by a self-weight thereof and the coil spring 26. Therefore, a resistance against the actuating plate 20 when being moved toward the main wall 61a by the wind pressure from the outside of the building is enhanced. To cope with the enhanced resistance, a torsion spring 70 (auxiliary spring) is provided in this embodiment. The torsion spring 70 is wound around a shaft 71 supported by one of the raised walls 65b of the extrusion molded members 65. One leg of the torsion spring 70 is abutted against the raised wall 65b. An extension member 72 that is a blade spring is fixed to the other leg of the torsion spring 70. The extension member 72 is abutted against a spring hook portion on an under surface of the actuating plate 20 and urges the actuating plate 20 upward toward the main wall 61a.

[0063]

A force of the torsion spring 70 generally balances out a self-weight of the actuating plate 20. Normally, the actuating plate 20 is caught by the stopper 28 under a force of the coil spring 26, and is maintained at a separated position. When the actuating plate 20 is subjected to an upward force by a wind pressure from the outside of the building, the actuating plate 20 is moved toward the main wall 61a. At this time, the force of the torsion spring 70 balances out a force of gravity, and therefore, the actuating plate 20 can be surely rotated up to a position at which the packing 25 is abutted against the main wall 61a.

[0064]

In a fourth embodiment shown in FIG. 8, a ventilation device 4 has an indoor side unit 4A and an outdoor side unit 4B. The indoor side unit 4A is installed on an upper horizontal wall 106a of a support frame 106 incorporated into a high-rise building such that the indoor side unit 4A is protruded downward. The outdoor side unit 4B is installed on a lower horizontal wall 106b such that the outdoor side unit 4B is protruded upward. A device 107 for manually opening and closing a passage is installed on the indoor side unit 4A.

[0065]

The indoor side unit 4A has a horizontally extending extrusion molded member 81 and a plurality of U-shaped brackets 82 fixed to the molded member 81. The U-shaped brackets 82 are arranged in a longitudinal direction of the molded member 81 at even intervals. The molded member 81 has a horizontally extending main wall 81a. A lot of ventilation openings 8 lx (first ventilation openings) are formed in the main wall 81a. The ventilation openings 8lx are arranged in a longitudinal direction of the main wall 81a at even intervals.

[0066]

The outdoor side unit 4B has a horizontally extending extrusion molded member 85 and a plurality of U-shaped brackets 86 fixed to the molded member 85. The U-shaped brackets 86 are arranged in a longitudinal direction of the molded member 85 at even intervals. The molded member 85 has a horizontally extending main wall 85a. A lot of ventilation openings 85x (second ventilation openings) are formed in the main wall 85a. The ventilation openings 85x are arranged in a longitudinal direction of the main wall 85a at even intervals.

[0067]

An actuating plate 20 is supported by the molded member 81 of the indoor side unit 4A. A coil spring 26 is provided between the actuating plate 20 and the bracket 82. Moreover, the bracket 82 is provided with a torsion spring 70. The torsion spring 70 of this embodiment imparts an upward force to the actuating plate 20 via a hinge 75. Action of the torsion spring 70 is similar to that of the torsion spring 70 of the third embodiment. A mat 83 (first stopper) that restricts rotation of the actuating plate 20 in a separating direction is provided in the bracket 82.

[0068]

An actuating plate 30 is supported by the molded member 85 of the outdoor side unit 4B. A coil spring 36 is provided between the actuating plate 30 and the bracket 85. A mat 87 (second stopper) that restricts rotation of the actuating plate 30 in a separating direction is provided in the bracket 86.

[0069]

In the ventilation device 4, an inner space between the horizontal walls 106a and 106b of the support frame 106 is provided as a ventilation passage 16. A device body of the ventilation device 4 includes the support frame 106 as well as the molded members 81, 85 and the brackets 82, 86.

[0070]

The present invention is not limited to the embodiments described above and various modifications can be made. The first and second packings may be any packing as long as they have elasticity and air permeability. The first and second packings may be made of non-woven fabric composed of fibers or the like. The packings may be disposed on the main walls or on both of the opposing surfaces of the actuating plate and the main wall.

[0071]

The first and second stoppers may be composed of one edge of a slit of a shaft bearing portion formed in the device body.

INDUSTRIAL APPLICABILITY [0072]

The present invention may be applied to a ventilation device with which ventilation can be limited when the wind is strong.

Claims

CLAIMS [Claim 1]

A ventilation device comprising:

a device body (10; 50; 60) including a first main wall (12a; 51a; 61a; 81a) having a first ventilation opening (12x; 5 lx; 61x; 81x), a second main wall (15a; 55a; 65a; 85a) having a second ventilation opening (15x; 55x; 65x; 85x) and a ventilation passage (16) through which the first ventilation opening and the second ventilation opening communicate with one another;

a first actuating plate (20) rotatably supported by the device body such that the first actuating plate is movable toward and away from the first main wall;

a second actuating plate (30) rotatably supported by the device body such that the second actuating plate is movable toward and away from the second main wall;

a first spring (26) that urges the first actuating plate in a direction away from the first main wall;

a second spring (36) that urges the second actuating plate in a direction away from the second main wall;

a first packing (25) having an elasticity and an air permeability, the first packing disposed on at least one of opposing surfaces of the first actuating plate and the first main wall at a location away from a rotational axis of the first actuating plate; and a second packing (35) having an elasticity and an air permeability, the second packing disposed on at least one of opposing surfaces of the second actuating plate and the second main wall at a location away from a rotational axis of the second actuating plate, wherein:

the first actuating plate is disposed on an outdoor side with respect to the first main wall;

the first actuating plate is moved toward the first main wall by a wind pressure from an outside of the building;

the second actuating plate is disposed on an indoor side with respect to the second main wall; and the second actuating plate is moved toward the second main wall by a wind pressure from an inside of the building.
[Claim 2]

The ventilation device according to claim 1, wherein:

the first main wall (12a; 51a; 61a; 81a) is disposed on the indoor side;

the second main wall (15a; 55a; 65a; 85a) is disposed on the outdoor side;

and the first actuating plate (20), the second actuating plate (30), the first spring (26) and the second spring (36) are disposed in the ventilation passage (16) between the first main wall and the second main wall.
[Claim 3]

The ventilation device according to claim 2, wherein:

the device body (10; 50; 60) has a hollow elongated structure (10a; 50a; 60a) and a pair of closing members (10b; 50b; 60b) that closes opposite end openings of the elongated structure; and the first actuating plate (20), the second actuating plate (30), the rotational axis of the first actuating plate and the rotational axis of the second actuating plate extend in a longitudinal direction of the elongated structure.
[Claim 4]

The ventilation device according to claim 3, wherein:

the device body (10) is provided with a first stopper (28) and a second stopper (38); and the first stopper and the second stopper respectively catch the first actuating plate (20) and the second actuating plate (30) at respective predetermined separated positions, thereby restricting rotation of the first actuating plate (20) and the second actuating plate (30).
[Claim 5]

The ventilation device according to claim 4, wherein:

the rotational axis of the first actuating plate (20) is disposed in a first direction orthogonal to the longitudinal direction of the elongated structure (10a; 50a; 60a) with respect to the first ventilation opening (12x); and the rotational axis of the second actuating plate (30) is disposed in a second direction opposite to the first direction with respect to the second ventilation opening (15x; 55x; 65x).
[Claim 6]

The ventilation device according to claim 5, wherein the first actuating plate (20) and the second actuating plate (30) are parallel to each other at the respective predetermined separated positions.
[Claim 7]

The ventilation device according to claim 4, wherein:

each of the pair of closing members (10b; 50b; 60b) of the device body is provided with the first stopper (28) and the second stopper (38);

the pair of first stoppers (28) catch opposite ends of the first actuating plate (20) in a longitudinal direction of the first actuating plate; and the pair of second stoppers (38) catch opposite ends of the second actuating plate (30) in a longitudinal direction of the second actuating plate.
[Claim 8]

The ventilation device according to claim 3, wherein:

the device body (10) is incorporated into a window sash;

the first main wall (12a) and the second main wall (15a) are vertically oriented;

a lot of the first ventilation openings (12x) are formed in the first main wall such that the first ventilation openings are arranged in a longitudinal direction of the first main wall spaced from one another;

the ventilation device further comprises a manually actuating plate (40) abutted against a surface of the first main wall on the indoor side and slidably supported by the device body; and the manually actuating plate has a lot of control openings (41) formed therein at the same pitch as the first ventilation openings.
[Claim 9]

The ventilation device according to claim 4, wherein:

the first main wall (61a) and the second main wall (65a) are horizontally oriented;

the first main wall is disposed above the second main wall;

the first actuating plate (20) is disposed below the first main wall;

the second actuating plate (30) is disposed above the second main wall;

the first actuating plate is urged by a self-weight of the first actuating plate and the first spring (26) in a direction away from the first main wall; and the ventilation device further comprises an auxiliary spring (70) that urges the first actuating plate toward the first main wall.
[Claim 10]

The ventilation device according to claim 1, wherein the first packing (25) and the second packing (35) are made of a foamed resin material having an open-cell structure.

1/8 ~σ

LO CCS 1_Ο

FIG.

2/8

I

I .-102 (indoor) (outdoor)

FIG. 2

3/8

FIG. 3

4/8 (indoor) (outdoor)

FIG. 4

5/8 (indoor)

55d 103a

FIG. 5

6/8 (indoor) (outdoor) \ \

103x' 103z

FIG. 6

HQ

FIG. 7

8/8 (indoor)

85x 85a (outdoor)

1 I

FIG. 8