Vehicle compartment ventilation system

Abstract

To provide a cabin ventilation device that is able to reduce the risk of infection of virus or the like by reducing the difference in ventilation efficiency between seats.SOLUTION: A cabin ventilation device 10 of the present invention, which is used for a vehicle 1 having a plurality of seats 2, has: an intake port 12 provided so as to correspond to each of the plurality of seats 2 and serves as an inlet of air in the cabin 5; a plurality of branch ducts 34 having a plurality of passages L leading to the plurality of intake ports 12; and a main duct 32 connected to the plurality of branch ducts 34; where the branch ducts 34 are identical in a passage length from the respective intake ports 12 to the main duct 32.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a ventilation device for ventilating a vehicle interior. [Background technology]

[0002] Conventionally, there has been provided a device that provides ventilation in a vehicle cabin by providing a duct in the vehicle cabin and discharging air from the duct to the outside of the vehicle. For example, the following Patent Document 1 discloses an interior ventilation device for a vehicle that can ventilate the vehicle cabin by drawing in indoor air through a ventilation duct provided above passenger seats and discharging it to the outside of the vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 2-90115 Summary of the Invention [Problem to be solved by the invention]

[0004] However, if air intakes are provided at designated locations (such as the ceiling) in the vehicle for each seat and the air from these intakes is merged into one duct, there is a concern that the ventilation efficiency will decrease due to the pressure loss of the air flowing through the duct. In addition, since air from the entire vehicle cabin is drawn in through multiple intakes, there is a risk that the effectiveness of reducing airborne infection (virus infection) between seated passengers will decrease.

[0005] Due to the recent spread of the COVID-19 virus, public vehicles used by an unspecified number of passengers are being required to be equipped with ventilation systems to prevent the spread of infection. As a result, there is a high demand for ventilation systems to prevent infection among passengers, and there is a particular demand for systems that can efficiently exhaust air around passengers to the outside of the vehicle.

[0006] Here, as a method of forced ventilation, it is considered to install a ventilation duct at each seat. However, simply installing a ventilation duct at each seat causes a problem that the pressure loss of the air flowing through the duct causes a difference in ventilation efficiency between each seat. In addition, if an intake port is provided at each seat and air is taken in from multiple intake ports, there is a concern that the difference in ventilation efficiency between seats may not be able to effectively suppress airborne infection (virus infection) between passengers.

[0007] Therefore, an object of the present invention is to provide a vehicle interior ventilation device that can reduce the difference in ventilation efficiency between each seat and reduce the risk of infection with viruses, etc. [Means for solving the problem]

[0008] Here, the inventors of the present invention have studied the above-mentioned problem and found that if the piping distance (the distance from the suction port to the junction) from the intake port that draws air from each seat to the main duct is different, pressure loss is likely to occur, and differences in ventilation efficiency between each seat are likely to occur. In addition, they have come to the knowledge that if the path length from the intake port of each seat to the junction is made equal (almost the same), the pressure loss of the air flowing in the branch duct can be reduced and the difference in ventilation efficiency between each seat can be improved.

[0009] (1) The vehicle cabin ventilation device of the present invention, provided based on the above-mentioned findings, is used in a vehicle having a plurality of seats, and is characterized in that it has an intake port provided corresponding to each of the plurality of seats, which serves as an inlet for air into the vehicle cabin, a branch duct having a plurality of paths leading to the plurality of intake ports, and a main duct connected to the plurality of branch ducts, and the branch ducts have equal path lengths from each of the intake ports to the main duct.

[0010] According to the vehicle cabin ventilation device of the present invention, even when a plurality of intake ports are provided (even when a plurality of seats are provided with respective intake ports), the pressure loss of the air flowing through each pipe can be reduced. This improves the difference in ventilation efficiency between the seats, and reduces the risk of passengers contracting viruses, etc. That is, the risk of exposing passengers in the vehicle to air containing droplets from other passengers (air containing viruses) can be reduced, and the risk of passengers contracting viruses, etc. can be reduced. This reduces passengers' anxiety about virus infection. The term "equivalent" refers not only to the case where the lengths of the paths are strictly the same, but also to the case where the lengths are substantially the same within a range where there is no problem with the flow resistance in the branch duct.

[0011] (2) The vehicle cabin ventilation device of the present invention is provided with partitions that divide the vehicle cabin into the seats, the intake ports are each provided above the seats, and the multiple seats are preferably divided by the partitions.

[0012] In the above-mentioned configuration, partitions are placed between the seats to separate (divide) each seat, and an air intake is provided above each seat. This makes it possible to ventilate each space (each seat) separated by the partitions while preventing droplets from one passenger from adhering to other passengers. As a result, it is possible to prevent air containing droplets from diffusing within the vehicle cabin, and to effectively reduce the risk of passengers contracting viruses, etc.

[0013] (3) In the vehicle compartment ventilation device of the present invention, the branch duct may have a tournament-type route that starts from the intake port and merges with routes extending from other intake ports, and leads to a single junction. The "tournament-type" route is one form for arranging the branch ducts so that the route lengths are equal, and is also the optimal form.

[0014] According to the above-mentioned configuration, the exhaust path can be made simple and straightforward.

[0015] Here, when arranging a duct between the ceiling outer panel and the molded ceiling (gap), it is also possible to form a "bend" in the branch duct and connect the opening at the end of the branch duct to the interior of the vehicle to serve as an intake port. To be more specific, the branch duct can be arranged to extend in the front-rear and left-right directions of the vehicle (arranged sideways), and the path can be changed downward above the intake port, and the opening at the end of the branch duct can be connected to the interior of the vehicle to serve as an intake port. In other words, a "bend" can be provided in the branch duct to serve as an intake port at the end of the branch duct.

[0016] However, if a normal elbow is used for the bend, it may cause a part of the elbow to encroach on the interior space of the vehicle, or it may be necessary to provide a raised part on the ceiling (molded ceiling), which may spoil the appearance of the interior of the vehicle. In addition, the bend causes a sudden change in the path, which may cause a pressure loss of the air flowing through the branch duct, which may lead to a decrease in ventilation efficiency. Furthermore, the gap between the interior ceiling (molded ceiling) and the outer ceiling panel is narrow, which limits the gap (size of the gap), making it difficult to use an elbow.

[0017] (4) In order to address the above-mentioned problems, the vehicle compartment ventilation device of the present invention is preferably such that the branch duct is provided in a gap between the molded ceiling of the vehicle and the ceiling outer panel, and a dam is provided in the gap to surround the intake port.

[0018] According to the above-mentioned configuration, the branch duct can be connected to the intake port without providing a bent portion (elbow) near the end of the branch duct. As a result, the vehicle cabin ventilation device can suppress pressure loss by avoiding the formation of a sudden path change (bent portion) in the branch duct. In addition, since there is no need to provide an elbow, it is possible to avoid the deterioration of the appearance that is a concern when an elbow is provided. In other words, the vehicle cabin ventilation device forms a connection portion using a weir portion, and can reduce pressure loss due to a sudden path change while addressing the space problem. Effect of the Invention

[0019] According to the present invention, a vehicle interior ventilation device can be provided that can reduce the difference in ventilation efficiency between each seat and reduce the risk of infection with viruses, etc. [Brief description of the drawings]

[0020] [Figure 1] 1 is a side view of a vehicle provided with a vehicle compartment ventilation device according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a plan view of the vehicle of FIG. [Diagram 3] FIG. 2 is a plan view showing the position of a partition of the vehicle interior ventilation device of FIG. [Figure 4] FIG. 2 is a perspective view showing a duct of the vehicle ventilation device of FIG. 1. [Diagram 5] 2A and 2B are diagrams showing a connection part of the vehicle ventilation device of FIG 1, (a) being a side view and (b) being a plan view. [Figure 6] FIG. 2 is a diagram showing an air flow in the vehicle interior ventilation system of FIG. 1. [Figure 7] FIG. 2 is a diagram showing a modified example of the vehicle interior ventilation device of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, an embodiment of a vehicle compartment ventilation device 10 of the present invention will be described with reference to the drawings.

[0022] The vehicle interior ventilation device 10 is used in a vehicle 1 equipped with a plurality of seats 2. As shown in Fig. 2, the vehicle 1 shown as an example in this embodiment is a five-seater passenger car, and is provided with two seats 2 in the front row and three seats 2 in the rear row, for a total of five seats 2. To explain in more detail, as shown in Fig. 2, the vehicle 1 is provided with a driver's seat 2a and a passenger seat 2b in the front row, and a right rear seat 2c, a center rear seat 2d, and a left rear seat 2e in the rear row.

[0023] In this embodiment, the vehicle interior ventilation device 10 used in a vehicle 1 having five seats 2 will be described as an example, but the vehicle interior ventilation device of the present invention is not limited to the above embodiment. That is, the vehicle interior ventilation device of the present invention can be used in a vehicle that can accommodate four people or six or more people. Furthermore, the vehicle interior ventilation device of the present invention can be widely applied to vehicles used by specific people as well as shared vehicles used by an unspecified number of people.

[0024] In the following description, the front of the vehicle 1 may be simply referred to as the "front Fr" and the rear may be simply referred to as the "rear Rr". The up-down direction of the vehicle 1 may be simply referred to as the "up-down direction H". In addition, the up in the up-down direction H may be simply referred to as the "up-down Up" and the down in the up-down direction H may be simply referred to as the "down-down Lw". In addition, with regard to the left-right direction of the vehicle 1, the right side as seen by the occupant may be simply referred to as the "right side" and the left side as seen by the occupant may be simply referred to as the "left side".

[0025] 1, a vehicle 1 is provided with an air conditioner 3 that conditions the air inside a vehicle compartment 5. The air conditioner 3 is provided with a fan (not shown).

[0026] The ceiling portion 4 of the vehicle 1 includes a ceiling outer plate 4a and a molded ceiling 4b (see Figs. 4 and 5). As shown in Fig. 4, the ceiling outer plate 4a forms the surface on the upper Up side, and the molded ceiling 4b forms the surface on the lower Lw side (the vehicle compartment 5 side). A gap S is formed between the ceiling outer plate 4a and the molded ceiling 4b. A duct 30 is arranged in the gap S.

[0027] 1, the vehicle interior ventilation device 10 includes an intake port 12, an exhaust section 14, a fan 20, and a duct 30. The vehicle interior ventilation device 10 also includes a partition 50.

[0028] The intake ports 12 are through-holes that serve as an inlet for air inside the vehicle cabin (air for each seat 2). The intake ports 12 are provided in the molded ceiling 4b, and are provided as through-holes in the molded ceiling 4b (see FIG. 5). That is, the multiple intake ports 12 are provided above the seats 2, respectively. One intake port 12 is provided for each seat 2 (provided corresponding to each seat 2).

[0029] In the following description, the intake port 12 provided for the driver's seat 2a may be referred to simply as "intake port 12a," the intake port 12 provided for the passenger seat 2b may be referred to simply as "intake port 12b," the intake port 12 provided for the right rear seat 2c may be referred to simply as "intake port 12c," the intake port 12 provided for the central rear seat 2d may be referred to simply as "intake port 12d," and the intake port 12 provided for the left rear seat 2e may be referred to simply as "intake port 12e."

[0030] The exhaust unit 14 is provided as an exhaust port (vent duct) for the air taken in through the intake port 12. As shown in Fig. 1, in this embodiment, the exhaust unit 14 is provided at the rear Rr of the vehicle 1.

[0031] The fan 20 is provided to transport the air guided into the duct 30 to the exhaust section 14. The fan 20 is provided separately from the fan provided in the air conditioner 3. In other words, the vehicle 1 is provided with a fan 20 for forced ventilation, separate from the fan of the air conditioner 3. The fan 20 used in this embodiment has a fan flow rate of 5.6 cubic meters per minute. The flow rate of the fan 20 is not limited to this embodiment, and is desirably set appropriately according to the volume of the passenger compartment 5. As shown in FIG. 1 and FIG. 2, the fan 20 is disposed in the rear Rr of the passenger compartment 5.

[0032] The duct 30 forms an air passage (exhaust path). As shown in Fig. 2, the vehicle interior ventilation device 10 of this embodiment includes a main duct 32 and a branch duct 34 as the duct 30. In addition, in the vehicle interior ventilation device 10 of this embodiment, a hollow member (tubular member) is used as the duct 30.

[0033] As shown in Fig. 4, the trunk duct 32 is connected to the fan 20 and the branch duct. To explain in more detail, as shown in Fig. 4, one end of the trunk duct 32 is connected to the branch duct 34 and the other end is connected to the fan 20, forming one passage (one path).

[0034] 4, the trunk duct 32 extends from the portion (junction P) connected to the branch duct 34 in the ceiling portion 4 toward the side (right side) of the vehicle 1 and bends toward the rear Rr near the side of the vehicle 1. The trunk duct 32 also forms a path that bends toward the downward Lw near the rear Rr of the vehicle 1 and reaches the fan 20. That is, a portion of the trunk duct 32 is disposed in a horizontal position on the ceiling portion 4, and a portion is disposed in a vertical position on the rear Rr of the vehicle 1.

[0035] In the following description, the connection portion between the main duct 32 and the branch duct 34 may be simply referred to as a "junction point P."

[0036] The branch duct 34 is connected to a plurality of intake ports 12. As shown in Fig. 4 and Fig. 5, the branch duct 34 is arranged in a horizontal position in the ceiling portion 4 (gap S formed between the ceiling outer plate 4a and the molded ceiling 4b). The branch duct 34 is a piping that branches out (diverges) into a plurality of paths. That is, the branch duct 34 has a plurality of paths L that branch out from the trunk duct 32 (junction P).

[0037] 4, the branch duct 34 branches into two paths, a path L on the front Fr side and a path L on the rear Rr side, from the connection portion (junction P) with the trunk duct 32. The path L on the front Fr side of the branch duct 34 further branches into a path L on the right side and a path L on the left side, with the path L on the right side reaching the intake port 12a and the path L on the left side reaching the intake port 12b.

[0038] In addition, path L on the rear Rr side of branch duct 34 further branches into three paths: right path L, middle path L, and left path L. Right path L leads to intake port 12c, middle path L leads to intake port 12d, and left path L leads to intake port 12e.

[0039] In this way, the branch duct 34 branches into a plurality of ducts from the junction P, and the ends 34a of the ducts reach the suction ports 12. From the opposite perspective, the branch duct 34 has a "tournament-type" path L that starts from a plurality of suction ports 12, merges with paths L extending from other suction ports 12, and finally reaches one junction P. The vehicle interior ventilation device 10 of this embodiment has paths L that form a tournament shape on the front row side and the rear row side. The "tournament-type" path L is one form for arranging the branch duct 34 so that the path lengths are equal, and is also the optimal form.

[0040] This allows the vehicle interior ventilation device 10 to provide an efficient and simple exhaust path.

[0041] In the following description, path L from intake port 12a to junction P may be referred to as the "first path La," path L from intake port 12b to junction P may be referred to as the "second path Lb," path L from intake port 12c to junction P may be referred to as the "third path Lc," path L from intake port 12d to junction P may be referred to as the "fourth path Ld," and path L from intake port 12e to junction P may be referred to as the "fifth path Le."

[0042] Here, in the branch duct 34 of the vehicle compartment ventilation device 10, the lengths of the paths L from the intake port 12 to the main duct 32 are substantially the same. Specifically, in the branch duct 34, the path distance from each intake port 12, which is the starting point, to the junction point P, which is the end point, is substantially the same (each path L is of equal length). More specifically, in the branch duct 34, the first path La, the second path Lb, the third path Lc, the fourth path Ld, and the fifth path Le have the same (substantially the same) distances (piping distances). Note that the terms "same" and "substantially the same" for the lengths (path distances) of the paths L include not only the case where the lengths of the paths L are strictly the same, but also the case where the lengths are substantially the same within a range where there is no problem with the flow resistance in the branch duct 34.

[0043] This allows the vehicle interior ventilation device 10 to reduce the pressure loss of the air flowing through the branch duct 34. That is, while pressure loss increases when the piping distances to the seats 2 are different, the vehicle interior ventilation device 10 has the piping distances (path lengths) to the seats 2 substantially the same, thereby reducing the pressure loss of the air flowing through the branch duct 34. As a result, the difference in ventilation efficiency between the seats 2 can be improved, and the risk of infection with viruses, etc. can be reduced.

[0044] 4, the branch duct 34 has three bends (corners) in the fourth path Ld, and three bends (corners) in the other four paths L (the first path La, the second path Lb, the third path Lc, and the fifth path Le). In other words, the branch duct 34 of this embodiment is configured to minimize the number of bends in the multiple paths. This can further contribute to reducing pressure loss.

[0045] 4, the branch duct 34 is disposed horizontally between the ceiling outer panel 4a and the molded ceiling 4b (gap S). That is, the branch duct 34 is disposed in a location (gap S above the passenger compartment) other than inside the passenger compartment 5. This makes it possible to prevent the appearance inside the passenger compartment 5 from being impaired, and also makes it possible to prevent the position of the interior ceiling (molded ceiling 4b) from being lowered and compressing the inside of the passenger compartment 5.

[0046] As shown in Fig. 5(a), a dam portion 40 (dam) is provided near the gap S (between the molded ceiling 4b and the ceiling outer panel 4a) in which the suction port 12 is provided. The dam portion 40 is provided to form a connection portion 42 that connects the suction port 12 and the end portion 34a of the branch duct 34. In this embodiment, a flexible cushioning material with low breathability (almost no breathability) is used for the dam portion 40. A closed-cell type cushioning material such as Eptsealer can be used for the dam portion 40.

[0047] 5(b), the weir portion 40 is a substantially U-shaped cushioning material, and is provided so as to surround the intake port 12 and the end 34a (the opening of the end 34a) of the branch duct 34 and fill the gap S. As a result, in the vehicle interior ventilation device 10 of this embodiment, the branch duct 34 is arranged in a horizontal position (with the opening facing sideways) and is connected to the intake port 12 penetrating in the vertical direction H. In this manner, in the vehicle interior ventilation device 10, a connection portion 42 is formed that connects the end 34a of the branch duct 34 and the intake port 12.

[0048] Here, when arranging a duct in the gap between the outer ceiling panel and the molded ceiling, it is also possible to form a "bend" in the branch duct and connect the opening at the end of the branch duct to the room and use it as an intake port. To be more specific, the branch duct can be placed sideways, the path changed downward above the intake port, and the opening at the end of the branch duct can be connected to the room and use it as an intake port. In other words, a "bend" can be provided in the branch duct to use the end of the branch duct as an intake port.

[0049] However, if a normal elbow is used for the bend, a part of the elbow may encroach on the interior space of the vehicle, or a protruding part must be provided on the ceiling (molded ceiling), which may spoil the appearance of the interior of the vehicle. In addition, the bend causes a sudden change in the path, which may cause a pressure loss of the air flowing through the branch duct 34, which may lead to a decrease in ventilation efficiency. Furthermore, the gap between the interior ceiling (molded ceiling 4b) and the outer ceiling panel 4a is narrow, which limits the space (size of the gap S), making it difficult to use an elbow.

[0050] In order to avoid such deterioration of the appearance of the vehicle interior and pressure loss caused by providing a bent portion, the vehicle interior ventilation device 10 of this embodiment is provided with a weir portion 40. More specifically, in the vehicle interior ventilation device 10, the branch duct 34 is arranged horizontally, and no bent portion is provided near the upper Up of the suction port 12. Also, a weir (the weir portion 40) is provided to connect the opening (opening of the end portion 34a) of the branch duct 34 opening horizontally to the suction port 12 opening in the vertical direction H, and to fill the gap S around these openings.

[0051] This allows the branch duct 34 to be connected to the intake port 12 without providing a bent portion near the end 34a of the branch duct 34. As a result, the vehicle interior ventilation device 10 can suppress pressure loss by avoiding the formation of a sudden change in path (bent portion) in the branch duct. In addition, since there is no need to provide an elbow, it is possible to avoid the deterioration of the appearance that is a concern when an elbow is provided. In other words, the vehicle interior ventilation device 10 forms the connection portion 42 with the weir portion 40 using a non-breathable, flexible cushioning material (such as Eptsealer), and can reduce pressure loss due to a sudden change in path while addressing the space problem.

[0052] The partitions 50 are provided to divide the interior of the vehicle compartment 5 into individual seats 2. As shown in Fig. 3, in the vehicle compartment ventilation device 10 of this embodiment, the partitions 50 include a partition plate 52 that separates the front row seats 2 from the rear row seats 2, and a curtain 54 that separates two adjacent seats 2 on the left and right.

[0053] As shown in Fig. 3, each seat 2 is divided by a partition plate 52 and a curtain 54. Also, an intake port 12 is provided in each divided area (area divided by the partition plate 52 and the curtain 54) at a position near the head of the occupant (above the seat 2 on the molded ceiling 4b) (see Fig. 1). That is, the interior of the vehicle compartment 5 is divided into an area (ventilation area R) for each seat 2, and an intake port 12 is provided in each of these areas. As a result, an area (ventilation area R) into which air is sucked by one intake port 12 for each seat 2 is formed in the vehicle compartment 5.

[0054] It is preferable that the curtain 54 is made of a material with low air permeability (almost no air permeability). It is preferable that the partition plate 52 is made of a plate-shaped resin material with translucency such as polycarbonate. It is preferable that the curtain 54 and the partition plate 52 are arranged in the vehicle interior 5 by hanging them from the ceiling part 4, for example.

[0055] In the vehicle interior ventilation device 10 of this embodiment, an example is shown in which both the curtain 54 and the partition plate 52 are provided as the partition 50, but the partitions in the vehicle interior ventilation device of the present invention may all be curtains or partition plates. Also, in the vehicle interior ventilation device of the present invention, partitions may be hung from the ceiling or may be attached to seats, etc.

[0056] <About the operation of the vehicle cabin ventilation system> Next, the operation of the vehicle compartment ventilation device 10 will be described with reference to FIG.

[0057] When the drive unit (not shown) of the vehicle 1 is turned on (when the engine is turned on), the air conditioner 3 (air conditioner) operates (the air conditioner is turned on). When the air conditioner 3 is turned on, outside air is sucked in (see arrow A1 in FIG. 6). A part of the outside air is supplied into the passenger compartment 5 (see A2 in FIG. 6).

[0058] When the air conditioner 3 (air conditioner) is turned on, the vehicle interior ventilation device 10 has an exhaust control device (not shown) that turns on the forced ventilation fan 20 (the forced ventilation fan 20 is turned on in conjunction with the air conditioner 3 being turned on). The fan 20 also operates to draw air in through the intake port 12 (see arrow A3 in FIG. 6). The air from each ventilation area R that has been drawn in through the intake port 12 passes through the branch duct 34 and the main duct 32 and is exhausted to the outside of the vehicle through the exhaust section 14 (see arrow A4 in FIG. 6). In this way, the vehicle interior ventilation device 10 can efficiently exhaust (forcefully ventilate) the air, particularly in the vicinity of the occupants, to the outside of the vehicle.

[0059] As described above, in the vehicle interior ventilation device 10, the branch ducts 34 have substantially the same path length from the intake port 12 to the main duct 32 (junction P). Therefore, while providing a plurality of intake ports 12 corresponding to each seat 2 (while providing the number of intake ports 12 corresponding to the plurality of seats 2), it is possible to reduce the pressure loss of the air flowing through the branch duct 34. This improves the difference in ventilation efficiency between the seats 2, and reduces the risk of infection between occupants with viruses, etc. That is, it is possible to reduce the risk of exposing occupants in the vehicle to air containing droplets from other occupants (air mixed with viruses), and to reduce the risk of infection between occupants with viruses, etc. This reduces the psychological anxiety of the occupants.

[0060] In addition, the intake port 12 is provided in the ceiling portion 4 (molded ceiling 4b). This allows air to be sucked in close to the face of the occupant. This makes it possible to more efficiently eliminate viruses and other airborne contaminants.

[0061] Furthermore, in the vehicle interior ventilation device 10, partitions 50 (curtains, polycarbonate panels, etc.) with low breathability are placed between the seats 2 to separate (divide) the seats 2, and an intake port 12 for each seat 2 is provided above each seat 2. This makes it possible to ventilate each space (each seat 2) divided by the partitions 50 while preventing droplets from one occupant from adhering to other occupants. As a result, it is possible to prevent air containing droplets from diffusing within the vehicle interior 5, and to enhance the effect of reducing the risk of infection of viruses, etc. between occupants.

[0062] <About modified examples> Next, a modified example of the vehicle interior ventilation device will be described. In the vehicle interior ventilation device 10 according to the above embodiment, an example in which a tubular member is used as the duct 30 has been shown, but the vehicle interior ventilation device of the present invention is not limited to this embodiment, and the duct may be formed by a molded ceiling 4b.

[0063] 7(a), a groove 104c may be formed in a molded ceiling 104b, and the groove 104c may be closed with a cover member 104d to form a duct 30. This not only makes it possible to eliminate the need for a separate duct (tubular member), but also makes it possible to prevent the position of the interior ceiling (molded ceiling 104b) from lowering and compressing the interior of the vehicle.

[0064] 7(b), the vehicle compartment ventilation device of the present invention may use the roof rail 140 as a duct. Specifically, the internal space of the hollow roof rail 140 may be used as a duct, and air may flow inside the roof rail 140. In this case, it is preferable to form a through hole 112 in the ceiling portion 4 and seal the through hole 112 with a packing or the like to prevent leakage. If the roof rail 140 is used as a duct, the duct can be provided outside the vehicle compartment, and the existing installed part (roof rail) can be reused to suppress the sense of incongruity caused by adding a part, and it also contributes to suppressing the deterioration of the appearance, which is a concern when a duct is provided inside the vehicle compartment.

[0065] Although the vehicle interior ventilation device 10 according to the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment.

[0066] For example, in the above-mentioned vehicle interior ventilation device 10, an example was shown in which a tubular member was used as the duct 30, but the vehicle interior ventilation device of the present invention is not limited to the above-mentioned embodiment, and may also be one in which a groove portion is provided in a molded ceiling or the like and the groove portion is formed as a duct, as shown in the modified example.

[0067] In addition, in the above-described embodiment, an example is shown in which one intake port 12 is provided for one seat 2, but the vehicle interior ventilation device of the present invention is not limited to the above-described embodiment, and multiple intake ports may be provided for one seat.

[0068] The present invention is not limited to the above-described embodiment, and other embodiments may be made within the scope of the claims, based on the teachings and spirit of the present invention. The components of the above-described embodiment may be arbitrarily selected and combined. In addition, any component of the embodiment may be arbitrarily combined with any component described in the Summary of the Invention or any component that embodies any component described in the Summary of the Invention. [Industrial Applicability]

[0069] The present invention can be suitably employed as a device for ventilating the interior of a vehicle. [Explanation of symbols]

[0070] 1 vehicle 2 seats 5 Cabin 10 Vehicle compartment ventilation system 12 Intake port 12a Inlet 12b Inlet 12c inlet 12d inlet 12e inlet 32 Main duct 34 Branch Duct 50 Dividers 52 Partition board (partition) 54 Curtain (Partition) L Route La 1st pathway (pathway) Lb Alternative Pathway (Pathway) Lc Third Pathway (Pathway) Ld fourth pathway (pathway) Le 5th Path (Path) P confluence

Claims

1. For use in vehicles with multiple seats, an intake port provided to correspond to each of the plurality of seats and serving as an inlet for air into the vehicle cabin; a branch duct having a plurality of paths leading to the plurality of suction ports; a trunk duct connected to a plurality of the branch ducts; An exhaust section; A fan, The branch duct is The path lengths from each of the suction ports to the trunk duct are equal, air drawn in from the intake port by operation of the fan passes through the branch duct and the main duct and is exhausted to the outside of the vehicle through the exhaust section, The branch duct has a tournament-type path starting from the intake port, merging with paths extending from other intake ports, and leading to a single junction of multiple paths.

2. A partition is provided to divide the interior of the vehicle into the seats, The intake ports are provided above the seats, The vehicle interior ventilation system according to claim 1 , wherein the plurality of seats are divided by the partition.

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