Ventilation hood

Abstract

To efficiently perform ventilation in light of difficulty in introducing wind flowing toward an outer wall surface into a room, which is not necessarily preferable in consideration of ventilation efficiency.SOLUTION: A ventilation hood includes a hood body 31 attached to the end of an opening section communicating between the inside and the outside of a room in a state of protruding to the outside of the room, in which the hood body 31 is provided with a ventilation passage extending from an outer peripheral surface 31a to the inside of the opening section 1 and the ventilation passage has a plurality of ventilation openings 33a on the outer peripheral surface 31a arranged in parallel in the left-right direction.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a fume hood. [Background technology]

[0002] A ventilation hood is provided at the outside end of the ventilation duct that connects the inside and outside of the room. The ventilation hood allows ventilation through the ventilation duct while preventing outside water, such as rainwater, from entering the room (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-233986 Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned ventilation hood has a side surface perpendicular to the exterior surface of the building, and the ventilation opening is opened on the side surface. Therefore, the wind flowing along the exterior surface of the building can be introduced into the room through the ventilation opening. However, it is difficult to introduce the wind flowing toward the exterior wall surface into the room, and this is not necessarily preferable in terms of ventilation efficiency.

[0005] In view of the above-mentioned circumstances, an object of the present invention is to provide a ventilation hood capable of performing efficient ventilation. [Means for solving the problem]

[0006] In order to achieve the above-mentioned objective, the ventilation hood of the present invention comprises a hood body attached to the end of an air passage connecting the inside and outside of the room in a state where it protrudes outside the room, and the hood body is provided with an air passageway from its surface facing the outside to the inside of the air passageway, and the air passageway has multiple ventilation openings arranged side by side in the left-right direction on its surface facing the outside. Effect of the Invention

[0007] According to the present invention, since a plurality of ventilation openings are arranged side by side in the left-right direction on the surface of the hood body, it becomes possible to efficiently introduce air from a plurality of directions into the room. [Brief description of the drawings]

[0008] [Figure 1] 1 is a vertical cross-sectional view of a building to which a ventilation hood according to an embodiment of the present invention is applied. [Diagram 2] FIG. 2 is a cross-sectional view of the building shown in FIG. 1. [Diagram 3] FIG. 2 is a perspective view showing a schematic view of the ventilation hood of the present invention, viewed from the outdoor side. [Figure 4] FIG. 4 is a perspective view of the ventilation hood shown in FIG. 3 as viewed from the indoor side. [Diagram 5] 5 is a perspective view of the ventilation hood shown in FIG. 4, partially cut away by a plane along the horizontal direction. [Figure 6] 4 is a perspective view of the ventilation hood shown in FIG. 3, partially cut away along a vertical plane. [Figure 7] FIG. 4 is a vertical cross-sectional view of the ventilation hood shown in FIG. [Figure 8] FIG. 4 is a cross-sectional view of the ventilation hood shown in FIG. 3. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the ventilation hood according to the present invention will be described in detail with reference to the accompanying drawings. 1 and 2 show a ventilation hood according to an embodiment of the present invention. The ventilation hood 30 illustrated here is provided at the outside end of an opening (ventilation passage) 1 of a building in which a sliding window M is provided. The sliding window M is provided with an outside door 20A and an inside door 20B inside a frame 10, and the opening 1 is opened and closed by appropriately moving the outside door 20A and the inside door 20B. That is, when the outside door 20A or the inside door 20B is placed in the open position, ventilation between the inside and outside of the room is allowed through the opening 1, while when the outside door 20A and the inside door 20B are placed in the closed position, ventilation between the inside and outside of the room through the opening 1 is blocked.

[0010] The ventilation hood 30 to which the sliding window M is applied is provided with a hood body 31 and a flange portion 32, as shown in Figs. 3 to 8. The hood body 31 is attached in a state where it protrudes from the outer surface B1 of the building, and the portion facing the outside is configured as an outer peripheral surface (surface facing the outside) 31a having a semi-cylindrical convex shape. On the other hand, the portion of the hood body 31 facing the inside of the room is configured to have a concave surface 31b having a semi-cylindrical concave shape and two inner surfaces 31c having a flat shape provided on both sides of the concave surface 31b. In the illustrated example, the hood body 31 is configured so that the projection surface of the hood body 31 on the inside of the room, that is, the dimensions along the top and bottom and the dimensions along the left and right of the hood body 31, are approximately the same dimensions as the opening 1 of the frame body 10. The flange portion 32 extends from the four peripheries of the hood body 31 toward the outer periphery and then bends toward the inside of the room, and is configured to be large enough to accommodate the entire surface of the frame body 10.

[0011] The hood body 31 is provided with a plurality of ventilation passages 33 and water drainage passages 34. The ventilation passages 33 are provided between the outer peripheral surface 31a of the hood body 31 facing the outside of the room and the concave surface 31b and two inner surfaces 31c facing the room. In the illustrated example, the individual ventilation openings 33a opening to the outside of the room are arranged in a row in the left-right direction along the outer peripheral surface 31a of the hood body 31, and also arranged in a row in the up-down direction. As is clear from the figure, the ventilation passage 33 provided in the center part of the hood body 31 is configured to extend in a substantially straight line toward the axis c of the concave surface 31b. In contrast, the ventilation passages 33 provided on both sides of the hood body 31 are formed so as to extend toward the axis c of the concave surface 31b, and then bend toward the inside of the room inside the hood body 31, thereby opening at the inner surface 31c. All the ventilation passages 33 are inclined so as to gradually increase upward toward the inside of the room. The water drain passage 34 extends downward from the middle of the ventilation passage 33 and opens into the underside of the hood body 31. In the illustrated example, the water drain passage 34 is provided so as to connect the upper and lower ventilation passages 33 to each other. The upper surface of the hood body 31 slopes gradually upward toward the room, while the lower surface of the hood body 31 extends so as to be almost horizontal. The above-mentioned hood body 31 and flange portion 32 are configured as an integral molded body using, for example, resin as a material. This molded body can be easily obtained by applying, for example, a 3D (three-dimensional) printer.

[0012] In a building equipped with the ventilation hood 30 configured as described above, since a plurality of ventilation openings 33a are arranged in the left-right direction on the surface of the hood body 31, when the outer screen 20A and the inner screen 20B of the sliding window M are placed in the open position, wind from a plurality of directions can be efficiently introduced into the room, improving the ventilation efficiency. In particular, the ventilation hood 30 can be attached so as to protrude from the outer surface B1 of the building, so no complicated operations are required. Furthermore, each ventilation passage 33 is inclined so as to gradually rise upward toward the room, and each has a water drainage passage 34 on the way. Therefore, even if water such as rainwater enters the ventilation passage 33 from the ventilation opening 33a, it is possible to prevent it from reaching the room. In addition, since the ventilation passage 33 is inclined and the ventilation passages 33 on both sides are bent on the way, the view from the outside is obstructed, and there is no concern that the state of the room will be exposed to the outside through the ventilation passage 33.

[0013] In the above embodiment, the ventilation hood 30 is provided at the opening 1 of the building with a sliding window M, but the ventilation passage does not necessarily have to have a fitting such as a sliding window M, as long as the ventilation passage is provided to communicate between the inside and outside of the room. In addition, the surface facing the outside of the room is configured to have a semi-cylindrical convex shape, but the present invention is not limited to this. Furthermore, the ventilation passage 33 is provided as an example extending at an angle, but the entire ventilation passage 33 does not need to be inclined, and it is sufficient if it has at least a part that is inclined.

[0014] As described above, the ventilation hood of the present invention comprises a hood body attached to the end of a ventilation passage that connects the inside and outside of the room in a state where it protrudes outside the room, and the hood body is provided with an air passageway from its surface facing the outside to the inside of the ventilation passage, and the air passageway has multiple ventilation openings arranged side by side in the left-right direction on its surface facing the outside. According to this invention, since a plurality of ventilation openings are arranged side by side in the left-right direction on the surface of the hood body, air can be efficiently introduced into the room from a plurality of directions.

[0015] Furthermore, the present invention is characterized in that in the above-mentioned ventilation hood, the ventilation passage has a plurality of ventilation openings arranged side by side in the vertical direction on a surface facing the outside of the room. According to this invention, since a plurality of ventilation openings are arranged in parallel in the vertical direction on the surface of the hood body, air can be efficiently introduced into the room from a plurality of heights.

[0016] Furthermore, the present invention is characterized in that in the above-mentioned ventilation hood, the ventilation passage is provided with a portion that is inclined upward toward the ventilation passage. According to this invention, it is possible to prevent water from entering from the outside through the ventilation passage and to block the view from the outside.

[0017] Furthermore, the present invention is characterized in that in the above-mentioned ventilation hood, a water drainage passage extending downward is connected to the ventilation passage midway. According to this invention, water that has entered the ventilation passage can be discharged to the outside of the hood body through the water drainage passage.

[0018] The present invention is also characterized in that, in the above-mentioned ventilation hood, the hood body is configured so that the surface facing the outside is semi-cylindrical convex, and the surface facing the inside of the ventilation passage has a concave surface that is semi-cylindrical concave, and two planar inner surfaces provided on both sides of the concave surface, and the ventilation passage is connected to the ventilation passage at the concave surfaces and the inner surfaces. According to this invention, air can be introduced from the outside through the ventilation passages provided on the concave surface and the two inner surfaces, making it possible to improve ventilation efficiency.

[0019] The present invention is also characterized in that, in the above-mentioned ventilation hood, the ventilation passages provided on both sides of the hood body extend toward the center of the semicylinder and then bend to open on the inner surface. According to this invention, it is possible to prevent water from entering from the outside through the ventilation passage and to block the view from the outside.

[0020] The present invention is also characterized in that, in the above-mentioned ventilation hood, the hood body is a molded body formed by a 3D printer. According to the present invention, it is possible to easily obtain a hood body having an air passage with a complex path. [Explanation of symbols]

[0021] 1 opening, 30 ventilation hood, 31 hood body, 31a outer peripheral surface, 31b concave surface, 31c inner surface, 32 flange portion, 33 ventilation passage, 33a ventilation opening, 34 water drain passage, B1 outer surface

Claims

1. The hood body is attached to an end of an air passage that communicates between the inside and outside of the room in a state where the hood body protrudes to the outside of the room, The hood body is provided with an air passageway extending from a surface facing the outside of the room to the inside of the ventilation passage, The ventilation hood is characterized in that the ventilation passage has a plurality of ventilation openings arranged side by side in the left and right direction on the surface facing the outside of the room.

2. 2. The ventilation hood according to claim 1, wherein the ventilation passage has a plurality of ventilation openings arranged vertically on a surface facing the outside of the room.

3. 2. The ventilation hood according to claim 1, wherein the ventilation passage has a portion that is inclined upward toward the ventilation passage.

4. 2. The ventilation hood according to claim 1, wherein a water drain passage extending downward is connected to the ventilation passage midway.

5. The hood body is configured so that the surface facing the outside of the room forms a semi-cylindrical convex shape, The surface facing the inside of the ventilation passage has a concave surface that forms a semi-cylindrical concave shape, and two inner surfaces that are flat and provided on both sides of the concave surface, 2. The ventilation hood according to claim 1, wherein the ventilation passage communicates with the ventilation passage at the concave surface and the inner surface.

6. 6. The ventilation hood according to claim 5, wherein the ventilation passages provided on both sides of the hood body extend toward the center of the semicylinder and then bend to open on the inner surface.

7. The ventilation hood according to claim 1, wherein the hood body is a molded body formed by a 3D printer.

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