JP2000146253A - Ventilating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a recycle ratio by fixing hooks to a main body without using connecting parts such as screws and easily separating metal parts such as the hooks from plastic parts when the device is discarded. SOLUTION: This ventilating device comprises an opening part 4a for connecting a ventilating member through which the ventilating device 1 communicates with an outdoor side and an opening part for connecting a ventilating member through which it communicates with an indoor side. The air ducts of the two opening parts communicate substantially perpendicularly with each other to form an elbow type main body 1a. The main body has a two-piece structure which is formed by combining a left main body 2 with a right main body 3 which are two divided parts of the main body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation device mounted on a ventilation path for air supply and exhaust provided on a ceiling in a house.

[0002]

2. Description of the Related Art As a conventional ventilation device, for example, Japanese Utility Model 3
A ventilation grill disclosed in JP-A-89341 is known. FIG. 18 is an assembled perspective view showing the conventional ventilation grill. In the figure, a ventilation grill 102 opened to the indoor side is provided behind a ceiling 101 in a house, and a panel 103 covering this opening is provided on the indoor ceiling surface. A duct 104 communicating with the outside of the room as a ventilation path for air supply and exhaust is connected to the back side of the ceiling of the ventilation grill 102.

[0003] A valve 106 for adjusting an opening area of the ventilation grill 102 is provided at an end of a connection portion 105 of the ventilation grill 102 with the duct 104. Valve 106 is connection 1
05 is formed by cutting off the outer periphery except a part of the bottom and bending and raising it at a predetermined angle. As described above, by adjusting and setting the bending angle in accordance with the set air volume, a constant air volume can be obtained. Since the angle of the set valve 106 is not shifted by the wind force, a constant air volume can be stably obtained.

[0004] As another ventilation grill, there is known a method in which an adjusting valve is movable in Japanese Patent Application Laid-Open No. Hei 10-19327. FIG. 19 is a sectional view of the ventilation grill.
In the figure, reference numeral 111 denotes a wall, and a ventilation grill 112 provided on the wall is provided with a ventilation tube 113 on the inside, and the inside diameter thereof is an air passage. The side wall 1 is provided at the end of the ventilation tube 113.
15 are formed, and the opening 114 for ventilation is provided in the ventilation pipe 11.
3 is cut obliquely to form a slope 113a.

Below the side wall 115, an adjusting plate 116 for adjusting the area of the opening 114 by wind pressure is movably suspended. In addition, the ventilation grill 11 outside the ventilation pipe 113
2 is connected to a duct 117 communicating with the outside of the room.

The ventilation grill 112 constructed as described above
When air is blown from the outdoors to the room (in the direction of the arrow), the wind pressure acts on the adjusting plate 116, and the adjusting plate 116 rotates to reduce the area of the opening 114 so as to reduce the air volume. When the wind pressure increases, the adjustment plate 116 moves so as to be in close contact with the obliquely cut slope 113 a of the ventilation tube 113. At this time, the adjustment plate 1 is located below the ventilation tube 113.
A gap is formed between the lower portion 16 and the lower portion, and is not completely sealed, so that ventilation can always be ensured.

As a method for suspending and fixing an apparatus, for example, a method disclosed in Japanese Patent Application Laid-Open No. 5-141698 is known. FIG. 20 is a perspective view of the device. In the figure, an elongated hole 121 is provided at the center, and the elongated hole 121 and the outer peripheral portion are communicated with a notch 123 having a size larger than the diameter of the suspension bolt 122.
Fix with 4.

The hanging bracket 12 having the nut receiving portion 125
0 main body mounting portion 126, rising portions 127 on both sides.
The main body mounting portion 126 is fixed to the main body side plate 128 with screws 129, and the main body side plate 1
By fixing a rising portion 127 of the hanging metal member 120 with a screw 129 from the outside of the bent portion 130 of 28, the ventilation air conditioning equipment main body 131 and the hanging metal member 120 are firmly fixed.

[0009]

In a conventional ventilation grill as a ventilation device, when an air flow regulating valve is provided, an air passage portion has a width of 2 mm.
Providing a heavy pipe structure or providing a portion for suspending the regulating valve has a problem that the structure is complicated and the cylindrical portion of the ventilation grill becomes larger than the air passage area. In addition, there has been a problem that the cost is increased due to the complicated and large-sized structure. In addition, with the conventional fixed air volume adjustment mechanism, once the air volume is set, if the environment outside the house changes,
For example, each time the wind is strong, the air flow control valve must be manually closed each time.

[0010] If the operation of squeezing the air volume control valve is neglected,
There was a problem that excessive outside air intrusion occurred and ventilation could not be performed sufficiently. In addition, since the air volume control valve is made of metal, repeated opening / closing operations cause breakage of the valve due to metal fatigue, and there is another problem that the valve must be replaced. In addition, in the case of FIG. 16, since the hanging bracket is fastened to the main body with many screws, there is a problem that assembling and disassembling take time and cost. In addition, when connecting the duct to the ventilation grill behind the ceiling, there is a problem that the work is difficult to perform if the height behind the ceiling is low because the duct has a large bending radius R.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and can be assembled without using connecting parts such as screws when fixing a hanging bracket to a main body. An object of the present invention is to make it possible to easily separate metal parts such as metal fittings and hanging metal fittings, and to increase the material recycling rate.

[0012] Further, even when the environment outside the house becomes strong wind, there is no need to adjust the air flow each time, and the air supply and the exhaust are automatically adjusted to provide a ventilation device which stably ventilates. It is intended to do so. In addition, by providing an air flow control valve in the ventilation device, there is no need to provide an air flow control valve in the ventilation grill, which simplifies the structure of the ventilation grill.
The purpose is to reduce the size. It is another object of the present invention that the duct can be easily connected even in a narrow space above the ceiling. Further, it is an object of the present invention to provide a ventilation device having a function as a ventilation grill if a panel on the indoor side is prepared.

[0013]

In the ventilation device according to the present invention, the opening connecting the ventilation member communicating with the outdoor side and the opening connecting the ventilation member communicating with the indoor side have a right-angled positional relationship. An elbow-shaped main body communicating with the main body is formed, and ceiling suspending means is provided outside the main body.

Further, the ventilation device has an elbow-shaped main body in which an opening for connecting a ventilation member communicating with the outside of the room and an opening for connecting a ventilation member communicating with the inside of the room communicate at right angles. The main body is formed into a two-part structure, and the two main parts are combined.

Further, when the two divided main bodies are combined, the two divided main bodies are connected to each other on one side facing each other by a thin portion.

Further, the ceiling suspending means is formed integrally with the main body.

[0017] Further, L-shaped grooves facing each other are provided at positions facing each other when the two divided main bodies are combined, and ceiling means are held in the L-shaped grooves.

Further, the ceiling suspension means is provided separately on the two divided main bodies.

Further, the ceiling suspending means is constituted by a separate member from the main body.

Further, a boss portion is provided at a position facing when the two divided main bodies are combined, and a shutter is held by the boss portion.

Further, a stopper provided on the boss for restricting the movable range of the shutter, and an oblique rib for varying the air passage area with the shutter are provided at positions facing each other when the two divided main bodies are combined. It is a thing.

Further, a panel for covering the opening is provided detachably at an opening communicating with the indoor side of the main body.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Embodiment 1 of the present invention. Will be described. FIG. 1 is a perspective view of a ventilation device of the present invention,
FIG. 2 is a partial view of the right main body. FIG. 3 is a developed plan view of the ventilation device main body, and FIG. 4 is a developed side view thereof. FIG. 5 is a perspective view of the L-shaped groove and the hanging tool of the ventilation device main body, and FIG. 6 is a view of the same combination. FIG. 7 is a perspective view before the combination of the locking means of the ventilation device body, and FIG. 8 is a view after the combination. FIG. 9 is a perspective view of the shutter section, and FIG. 10 is a combination view of the same. FIG. 11 is a pressure loss characteristic diagram of the ventilation device. FIG.
FIG. 4 is a diagram showing another shape of the shutter. FIG. 13 is a view showing a state where the ventilation device is mounted on the ceiling, and FIG. 14 is a partial view thereof.

In FIG. 1, reference numeral 1 denotes a ventilation device, which is an elbow-shaped main body 1a, a shutter 11 provided inside thereof,
It comprises a ceiling suspension means 8 provided outside the main body 1a. The main body 1a is an elbow-shaped member having a two-part structure formed of a synthetic resin, 1b is a mating surface of the two-part structure main body 1a, 1c is a connecting part, and is a thin wall connecting the left and right sides of the two-part structure main body 1a. It is provided at four places at equal intervals in the section.
Left and right body (hereinafter referred to as left body and right body) 2,
Reference numeral 3 denotes an L-shaped line symmetric with the connecting portion 1c as an axis.

The left main body 2 is a left half centered on the thin portion 1c, and the right main body 3 is a right half centered on the connecting portion 1C.
The main body 1a is connected to a terminal of a ventilation path for air supply and exhaust piped behind the ceiling, and a pipe communicating with the pipe guide 4 and being larger than the outer shape of the pipe guide 4. Guide inclined part 5 and large diameter part 5a
And the other connecting portion 6 connected at a right angle to the large diameter portion 5a. The pipe guide 4 has an opening 4a and the connecting portion 6 has an opening 6a for connection to a ventilation member.

The ceiling suspending means 8 comprises a suspending tool 18 and a fixing section 7 for holding the suspending tool. The fixing portion 7 has an L-shaped groove formed in each of the left main body 2 and the right main body 3 in a line-symmetrical manner, and holds a hanging member 18 which will be described later, when they are combined. Reference numerals 9 and 10 denote locking means when the divided main bodies are put together. Reference numeral 9 denotes a convex portion having a triangular shape provided integrally with the main body near the mating surface 1b of the main body outside the left main body 2. Reference numeral 10 denotes a U-shaped catch portion which meshes with and locks with the convex portion 9 provided integrally with the main body near the main body mating surface 1b outside the right main body 3.

Reference numeral 11 denotes a shutter, which is made of a thin metal plate and has a part of an outer periphery in a circular shape. Reference numeral 12 denotes a linear cutout provided below the shutter 11. This notch may be formed by bending as shown in FIG.
Reference numeral 13 denotes a shaft portion provided on both sides of the upper portion of the shutter 11 for supporting the shutter. The corner portion has a smooth radius so as to be easily rotated. The shaft portion 13 is provided with a shaft hole 17 of a body described later.
The shutter is rotatable.

Reference numeral 14 denotes a boss portion, which is provided symmetrically with respect to the connecting portion 1c in opposition to the left main body 2 and the right main body 3 and has a shaft hole 17 for supporting the shaft portion 13 of the shutter 11.
Reference numeral 15 denotes an oblique rib, which is provided to be opposed to the left main body 2 and the right main body 3 and is symmetrical with respect to the connecting portion 1c, so that a portion serving as an air passage is formed in an arc shape slightly larger than the outer diameter of the shutter 11. Notched. When the shutter 11 is suspended and supported by the boss portion 14, the shutter 11 is provided with a predetermined inclination at both the large diameter portion 5 a and the connection portion 6 with the center at the position where the shutter 11 is stationary. The size of the ventilation opening can be varied depending on the position where 11 is turned.

Reference numeral 16 denotes a stopper, which is provided near the oblique rib 15 and parallel to the rib portion, has a predetermined size and height, and regulates the rotation range of the shutter 11. When the shutter 11 hits the stopper 16, the shutter surface is substantially flush with the oblique rib surface.

Reference numeral 18 denotes an L-shaped hanging member formed by bending a metal plate.
8a. Reference numeral 19 denotes a notch, which is formed by notching a side of a long hole 18a provided in the hanging member 18, and through which a hanging bolt can pass. Reference numeral 20 denotes an L-shaped groove, which is a groove to which the hanging tool 18 provided on the fixing part 7 is fitted and fixed. The groove width has a width larger than the thickness of the hanging tool 18.

Reference numeral 22 denotes a suspension bolt which is attached to a building material of a house and suspended vertically. Reference numeral 23 denotes a nut for tightening the hanging tool 18 attached to the hanging bolt 22. Reference numeral 24 denotes a duct, which is provided on the ceiling and is used as a ventilation path for air supply and exhaust, and communicates the ventilation device 1 with an opening provided on a wall. Reference numeral 25 denotes a ventilation grill mounted on the ceiling, and the connection portion 6 of the main body 1a is fitted and connected to a portion 25a protruding above the ceiling. Panel 2 with a vent on the ceiling side of the room to cover the opening of the ventilation grill
5b.

Next, a method of assembling the ventilation device according to the present embodiment will be described. Rotation is performed so that the mating portion 1b of the left main body 2 and the mating portion 1b of the right main body 3 abut on the thin portion 1c provided on the main body 1a shown in FIGS.
As shown in the figure, the U-shaped connecting portion 10 is
, The catch surface portion 10a engages with the protrusion side surface 9a and is caught and locked. The convex side surface 9a is pressed against the catch surface 10a by the elasticity of the main body 1a and is held by a strong holding force, so that the mating surface 1b of the left main body 2 and the right main body 3 maintains the close contact state. FIG. 8 shows the locked state.

When the main body 1a is put together, as shown in FIG.
And the hanger 1 is sandwiched between L-shaped grooves 20 provided in
8 is fixed. FIG. 6 shows the mounting state. Simultaneously with the attachment of the hanging member 18, the shaft 11 of the shutter 11 is inserted into the shaft hole 17 of the boss 14 provided on each of the left main body 2 and the right main body 3, as shown in FIG. Attach. FIG. 10 shows the mounting state. With the above operations, the ventilation device FIG. 1 is completed.

Next, a construction method of the ventilation device on the ceiling will be described. 13 and 14 are construction drawings. First, a ventilation gallery 25 is provided in an opening 27a provided in the ceiling 27 of the house.
Install. Next, the ventilation device 1 is attached to a portion 25a of the ventilation gallery 25 protruding behind the ceiling, and then the hanging device 1 of the ventilation device 1 is attached.
A hanging bolt 22 to which two nuts 23 are attached in advance is passed through the hole 18a of No. 8 so that the hanging tool 22 is sandwiched between the nuts 23, and an upper end of the bolt is fixed to a building material of a house above the hanging bolt.

Next, the two nuts 23 are turned to rotate the ventilation device 1.
Is adjusted to a predetermined height, and the nut 23 is tightened and fixed. The position of the hanging bolt 22 to which the ventilation device 1 is attached is determined, and the hanging bolt 22 is previously attached to a building material of the house at a position corresponding to the hole of the hanging member 18, and the ventilation device 1 is temporarily fixed thereto. Alternatively, the ventilation gallery 25 may be fixed to the opening 27 a of the ceiling 27 while fitting the ventilation gallery 25 to the ventilation device 1, and then the nut 23 may be tightened to fix the hanging member 18.

Next, the terminal of a duct 24 as a ventilation path for air supply and exhaust provided on the ceiling is inserted into the pipe guide 4 of the ventilation device 1 and taped with aluminum tape or the like so as to prevent air leakage. The connection port 6a of the ventilation device 1 connected to the ventilation gallery 25 is similarly taped. Duct 2
At the terminal on the outer wall side of No. 4, a hood 26 for preventing rain intrusion is attached.

Next, the operation and operation of the ventilation device 1 will be described. In FIG. 13 and FIG. 14, when an exhaust ventilation fan (not shown) attached to another place in the room is operated to discharge the contaminated air in the room, the room is in a negative pressure state. As a result, fresh air is supplied from the opening of the hood 26 through the duct 24 to the ventilation device 1 and from the ventilation gallery 25 to the room. This outside air supply flow is indicated by an arrow in FIG.

When the ventilation fan (not shown) is stopped, the shutter 11 shown in FIG. 2 is at the position A, and the pressure loss is at the position X shown in FIG. When a ventilation fan (not shown) is operated, outside air collides with the shutter 11 through the duct 24. Since the shutter 11 is made of metal, the shutter 11 does not move at a low airflow due to the weight. This corresponds to XY in FIG.

Further, when the air pressure is increased by increasing the air volume, the shutter 11 moves in the direction of the position B in FIG.
When the shutter 11 starts to oscillate around the center 4 and becomes stronger, the shutter 11 moves to the position B and forcibly stops by hitting the stopper 16, the opening area formed by the oblique rib 15 and the shutter 11 is reduced, and Is restricted so that the amount of air passing therethrough is constant. When the shutter 11 hits the stopper 16, a predetermined opening is ensured between the notch 12 of the shutter 11 and the inner surface of the main body 1a, so that a predetermined amount of airflow is always ensured. This corresponds to YZ illustrated in FIG. The pressure loss characteristic shown in FIG. 11 can be obtained even in a situation where the outside wind enters by a strong wind.

When the outside air blows along the outer wall 28 shown in FIG. 13, the air in the duct 24 is pulled toward the outside air due to the pressure difference. As a result, the ventilation device 1 becomes an exhaust device instead of sending fresh air into the room. However, by providing the oblique ribs 15 and the ribs 16 each having an opening at the position C shown in FIG. 2, the exhaust can be reduced by preventing the shutter 11 from opening at the position C.

Thus, the ventilation device 1 does not need to adjust the air volume by the person with respect to the intensity and direction of the outside wind, and can obtain the effect of automatically supplying the required air supply to the room.

Embodiment 2 In this embodiment, the ventilation device 1 is directly mounted on the ceiling, and a panel covering the opening on the indoor side is provided on the ceiling surface. The structure is the same as that of the first embodiment except that the panel is fixed to the main body of the ventilation device 1. The detailed description is based on the first embodiment and is omitted. FIG. 15 is a right main body partial view showing a ceiling mounted state of the ventilation device. In the figure, the ventilation device 1 connects the connecting portion 6 directly to the opening 27a of the ceiling 27.
And the nut 23 of the suspension bolt 22 is tightened to fix the suspension 18. The end of the connecting portion 6 which is the indoor opening of the ventilation device 1 is fixed so as to substantially coincide with the ceiling surface.

Reference numeral 30 denotes a panel which is attached so as to cover the connection port 6a from the inside of the room so as to be in close contact with the surface of the ceiling 27 and has an opening for ventilation. A holder 31 is formed in the panel 30 to enter the inside of the connection port 6a, and the inside forms a ventilation path. A fixing spring 32 which is a fixing member for fixing the panel 30 to the connecting portion 6 is provided at an end of the holder 31.
Is provided.

The shape of the fixed spring 32 is such that when it is attached to the end of the holder 31, the tip 32 is outside the holder 31.
The letter “a” extends toward the panel 30 and away from the holder 31. For this reason, when inserting into the connection part 6, it bends and escapes to the holder 31 side, and can be inserted with a small force. Once inserted, the distal end 32a is pressed against the inner wall of the connection port 6a by a spring force, and when a force is applied in a direction in which the panel is pulled out, the distal end 32a bites into the inner wall of the connection port 6a and is hardly pulled out and held. .

On the other hand, a ventilation path is formed on the pipe guide 4 side to connect the duct 24 and communicate with the outside. By directly attaching the ventilation device 1 to the ceiling in this manner, the panel 3
By simply attaching 0, it can be used as a ventilation gallery, and the cost of the ventilation gallery is reduced to only the panel, and the cost can be greatly reduced. Also, although the height of the space above the ceiling is usually narrow, the ventilation device 1 has an elbow shape and the pipe guide 4 is located in the horizontal direction, so that the duct 24 can be connected from the lateral direction and the construction can be facilitated.

As a method for fixing the product, the method using the hanging bolts and the hanger provided on the main body has been described in the present embodiment. In addition to this method, a screw for mounting to the main body 1a of the ventilation device 1 is used. A similar effect can be obtained by providing a hole or a hole through which a screw passes and fixing it to the ceiling 27 with a screw.

Embodiment 3 In the present embodiment, the ceiling suspension means is provided in the ventilation device main body by integral molding. Except for this part, it is the same as the first embodiment, and the description is omitted. FIG. 16 shows that the ceiling suspending means is provided on one side of the main body 1a, and FIG. 17 shows that the ceiling hanging means is provided on two divided main bodies. In the example of FIG. 16, in the figure, reference numeral 40 denotes a suspending portion as ceiling suspending means provided integrally with the left main body 2 (or on the right main body 3 side). Hanging part 4
0 is provided with a hole 41 for passing the suspension bolt 22,
A notch 41a is provided on the mating surface 1b side of the main body 1a of the hole, in which a part of the hanging portion 40 is cut out, so that the hanging bolt 22 can pass therethrough.

The thus constructed device can be formed integrally with the molding of the main body 1a of the ventilation device, so that the number of parts can be reduced. Further, since there is no need to assemble the device, the assembly can be facilitated and the inexpensive ventilation can be achieved. Equipment can be provided.

In the example of FIG. 17, reference numeral 42 denotes a suspending portion as ceiling suspending means provided integrally with the left main body 2 and the right main body 3 so as to be formed integrally with the main body. The hanging part 42 is divided into a left main body side 43 and a right main body side 44, and when the main bodies are combined, they form one hanging part. The hanging portions 43 and 44 have holes 43a and 4 for passing the hanging bolts 22 in a state where the mating surface 1b side of the main body 1a is cut out.
4a is provided, and when a part of the hole is further cut and the main body is fitted, a notch 45 through which the suspension bolt 22 passes through the holes 43a and 44a.

In the case of the above-mentioned structure, similarly to the case where it is provided on one side of the main body, the hanging portion can be integrally formed with the main body, thereby reducing the number of parts and facilitating assembly. In addition, since the hanging members are provided on the left and right main bodies, the strength is further enhanced as compared with the case where the hanging members are provided on one side, and a larger ventilation device can be supported.

[0051]

The ventilation device according to the present invention has an elbow shape in which the opening connecting the ventilation member communicating with the outdoor side and the opening connecting the ventilation member communicating with the indoor side communicate with each other at a right angle. When the ventilation device is installed above the ceiling by providing a ceiling suspension means outside the main body,
Since it can be fixed with hanging bolts, it is easy to connect ducts and blowers, and there is an effect that a stable state can be maintained after connection.

Further, since the ventilation device has a main body divided into two parts and is composed of two divided main bodies, even if there are complicated structures such as ribs inside the main body, it can be made by integral molding and greatly. This has the effect of enabling cost reduction.

Further, when the two divided main bodies are combined, the two divided main bodies are connected to each other on one side facing each other by a thin portion, and the locking means is provided, so that the main bodies can be easily aligned. It is possible to easily assemble without having to tighten with screws. Further, there is an effect that the combination can be strengthened without displacing the positional relationship between the main bodies.

Further, since the ceiling suspending means is formed integrally with the main body, the number of parts can be reduced, the materials can be unified, and the cost can be reduced.

Further, at the position where the two divided bodies face each other when they are combined, L-shaped grooves facing each other are provided, and the ceiling hanging means is held in the L-shaped grooves, so that the hanging tool can be separated. There is an effect that the separation can be easily performed and the separated material can be easily recycled.

Further, since the ceiling suspension means is provided separately on the two divided main bodies, there is an effect that the ceiling suspension means can be formed simultaneously with the main body by integral molding.

Further, since the ceiling suspending means is constituted by a member separate from the main body, there is an effect that an attachment method can be selected according to an attachment place.

Further, a boss is provided at a position facing the two divided main bodies when they are combined, and the shutter is held by the boss, thereby simplifying the structure of the shutter and facilitating disassembly and separation from the main body. There is an effect that can be.

Further, by providing a means for restricting the movable range of the shutter provided at the hinge portion at a position facing the combined two main bodies, the outside air is strong and the outside air intensely enters from the duct. Even if it occurs, the position of the shutter is limited to two places, so that there is an effect that the stability of the air supply amount and the exhaust amount is improved.

Further, by providing a detachable panel at the opening on the indoor side of the ventilation device, there is an effect that the ventilation device can be used as a ventilation gallery without requiring any special ventilation gallery.

[Brief description of the drawings]

FIG. 1 is a perspective view of a ventilation device according to a first embodiment of the present invention.

FIG. 2 is a right main body partial view of the ventilation device according to the first embodiment of the present invention.

FIG. 3 is an exploded plan view of the ventilation device body according to the first embodiment of the present invention.

FIG. 4 is a developed side view of the ventilation device main body according to the first embodiment of the present invention.

FIG. 5 is a perspective view of the L-shaped groove of the main body according to the first embodiment of the present invention and a hanging device.

FIG. 6 is a combination diagram of an L-shaped groove of the main body according to the first embodiment of the present invention and a hanging device.

FIG. 7 is a perspective view of the main body according to the first embodiment of the present invention before the locking means is combined.

FIG. 8 is a view after the combination of the locking means of the main body according to the first embodiment of the present invention.

FIG. 9 is a perspective view of a shutter unit according to the first embodiment of the present invention.

FIG. 10 is a combination diagram of a shutter unit according to the first embodiment of the present invention.

FIG. 11 is a pressure loss characteristic diagram of the ventilation device according to the first embodiment of the present invention.

FIG. 12 is a perspective view showing another shape of the shutter according to the first embodiment of the present invention.

FIG. 13 is a ceiling mounted state diagram of the ventilation device according to the first embodiment of the present invention.

FIG. 14 is a partial view of the ventilation device according to Embodiment 1 of the present invention in a ceiling mounted state.

FIG. 15 is a right main body partial view showing a ceiling mounted state of the ventilation device according to the second embodiment of the present invention.

FIG. 16 is a partial view of the ceiling suspension means of the ventilation device according to the third embodiment of the present invention.

FIG. 17 is a partial view of the ceiling suspension means of the ventilation device according to the third embodiment of the present invention.

FIG. 18 is a perspective view of a conventional ventilation device.

FIG. 19 is a cross-sectional view of another conventional ventilation device.

FIG. 20 is a perspective view of a conventional hanging device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Ventilation apparatus, 1a main body, 1b mating surface, 1c connecting part, 2 left main body, 3 right main body, 4 pipe guide, 6
Connection part, 7 fixing part, 8 ceiling suspension means, 9 convex part, 10
Catch, 11 Shutter, 12 Notch, 14
Boss part, 15 oblique rib, 16 stopper, 17 shaft hole, 18 hanging tool, 20 groove part, 30 panel, 32 fixing spring, 40 hanging part, 42 hanging part, 43 hanging part, 4
4 hanging parts.

Claims (10)

[Claims] An opening for connecting a ventilation member communicating with the outdoor side; and an opening for connecting a ventilation member communicating with the indoor side, wherein an air passage of the two openings has a substantially right angle. A ventilation device, wherein an elbow-shaped main body communicating with a positional relationship is formed, and ceiling suspending means is provided outside the main body. 2. An opening for connecting a ventilation member communicating with the outside of the room and an opening for connecting a ventilation member communicating with the inside of the room, and the two openings have substantially right-angled air paths. A ventilation device, wherein an elbow-shaped main body communicating with a positional relationship is formed, the main body is divided into two parts, and the two divided main bodies are combined to constitute the ventilation apparatus. 3. When the two divided main bodies are combined, the divided main bodies are connected to each other by a thin portion on one facing side, and a locking means is provided on the other facing side. The ventilation device according to claim 2, characterized in that: 4. The ventilation device according to claim 2, wherein the ceiling suspending means is formed integrally with the main body. 5. When the two divided main bodies are combined, opposed L-shaped grooves are provided at positions facing each other, and a ceiling suspension means is held in the L-shaped grooves. The ventilation device according to claim 2. 6. The ventilation device according to claim 2, wherein a ceiling suspension means is provided separately on the two divided main bodies. 7. The ventilation device according to claim 5, wherein the ceiling suspending means is formed as a separate member from the main body. 8. The ventilation device according to claim 2, wherein a boss portion is provided at a position facing when the two divided main bodies are combined, and a shutter is held at the boss portion. 9. A stopper provided on a boss portion for restricting a movable range of a shutter, and an oblique rib for varying an air passage area with the shutter are provided at positions facing each other when the two divided main bodies are combined. The ventilation device according to claim 2, wherein the ventilation device is provided. 10. The ventilation device according to claim 1, further comprising a panel that is detachably attached to an opening communicating with the indoor side of the main body, the panel covering the opening.