railway vehicles

Abstract

To provide a railway vehicle with an air-conditioner system which can simply improve a comfort and an air cleanness for each passenger sitting on a passenger seat in a passenger cabin.SOLUTION: Provided is a railway vehicle 10 with an airconditioning system 10K which has a blow-out port 3 for blowing out conditioned air TK into a passenger cabin 2 provided in a lower surrounding 11 of a vehicle body 1 and has an exhaust port 4 for exhausting air KK in the passenger cabin to the outside the passenger cabin provided in an upper surrounding 12 of the vehicle body, so that the conditioned air blown out from the blow-out port into the passenger cain ascends from a lower part to an upper part in the passenger cabin and is exhausted from the exhaust port. The blow-out port is formed in a passenger seat 5 installed in the passenger cabin and a first passenger seat blow-out port 32 formed so as to blow out the conditioned air to all circumferential directions of a passenger sitting on the passenger seat along a seat bottom surface 51b of the passenger seat.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a railway vehicle, and more particularly to a railway vehicle equipped with an air conditioning system that can easily improve the comfort and air cleanliness of each passenger seated in a passenger compartment. [Background technology]

[0002] Conventionally, railway vehicles equipped with an airtight mechanism for the interior of the passenger compartment have been equipped with air conditioning systems that incorporate various innovations to achieve a uniform temperature distribution within the passenger compartment. For example, Fig. 12 shows an example of an air conditioning system 100K for a conventional railway vehicle 100. Specifically, the system includes an air conditioning unit 101 that is located under the vehicle and generates conditioned air TK, a main supply duct 103 and a main return duct 104 that are located under the floor of a passenger compartment 102 and connected to the air conditioning unit 101, multiple air conditioning ducts 106 that are connected to the main supply duct 103 and pass between the side windows and rise to a baggage rack 105, and multiple exhaust ducts 108 that are connected to the main return duct 104 and are located under passenger seats 107.

[0003] In the air conditioning system 100K, the conditioned air TK produced by the air conditioning equipment 101 is distributed to each air conditioning duct 106 via the main supply duct 103 and supplied into the passenger cabin 102 from the air outlets 106a of the air conditioning ducts 106 formed below the luggage rack 105. The conditioned air TK supplied into the passenger cabin 102 flows along the underside of the luggage rack 105 toward the upper side of the central aisle, merges with the conditioned air TK from the opposite side, and travels downward until it reaches the vicinity of the floor surface 102a. The conditioned air TK that reaches the vicinity of the floor surface 102a then moves upward again along the floor surface 102a and the side wall surface 102b. In this way, the conditioned air TK supplied into the passenger cabin 102 from the air outlets 106a of the air conditioning ducts 106 circulates and mixes in a circular motion from top to bottom within the passenger cabin 102, thereby achieving a uniform temperature within the passenger cabin 102. The air in the passenger cabin 102 is finally returned to the air conditioning equipment 101 via an exhaust duct 108 located below the passenger seats 107 and a main return duct 104 .

[0004] However, in the air conditioning system 100K, the conditioned air TK is circulated from top to bottom, so the flow of the conditioned air TK is opposite to the natural updraft caused by the thermal load of the cabin air. Therefore, to ensure that the conditioned air TK is distributed throughout the cabin 102, it is necessary to forcibly blow the conditioned air TK from the air outlet 106a of the air conditioning duct 106 with a volume and velocity sufficient to overcome the updraft. However, in this case, the conditioned air TK is blown out from the air outlet 106a of the air conditioning duct 106 at a considerable volume and velocity, which can cause passengers to feel a draft and reduce comfort. This also increases the power consumption of the air conditioning equipment 101, which is undesirable from an energy-saving perspective. Furthermore, the multiple air conditioning ducts 106 extending up to the luggage rack 105 can easily increase weight and cost.

[0005] In this regard, for example, Patent Document 1 discloses an air conditioning unit 200K for a railway vehicle 200, which has an air outlet 202 around the bottom of the railway vehicle 200 that blows conditioned air into a passenger compartment 201, and an exhaust outlet 203 around the top of the railway vehicle 200 that exhausts the air inside the passenger compartment 201 to the outside, as shown in Figure 13, so that the conditioned air blown into the passenger compartment 201 rises from the bottom to the top of the passenger compartment 201 and is exhausted.

[0006] Specifically, conditioned air outlets 202 that open below passenger seats 204 are provided on floor 201a around the lower part of railway car 200, and slit-shaped exhaust ports 203 are provided on the left and right sides of ceiling 205 around the upper part of railway car 200. In addition, in correspondence with the provision of outlets 202 on floor 201a, air conditioning equipment 206 and air supply duct 207 that supplies conditioned air from this air conditioning equipment 206 to outlet 202 are installed on the underside of floor 201a.

[0007] According to the air conditioning device 200K of the above-described railway vehicle 200, the conditioned air blown into the passenger compartment 201 and exhausted rises from the bottom to the top of the passenger compartment 201, which matches the direction of the natural updraft caused by the thermal load of the indoor air. Therefore, there is no need to blow out the conditioned air from the outlet 202 with a considerable volume and velocity; rather, it can be blown out evenly and weakly from a wide surface, reducing the draft feeling felt by passengers. Furthermore, the power consumption of the air conditioning equipment 101 is reduced, which is preferable from the viewpoint of energy conservation. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Publication No. 6-191404 Summary of the Invention [Problem to be solved by the invention]

[0009] However, the air conditioning device 200K of the railway vehicle 200 described in Patent Document 1 has the following problem: The conditioned air blown out from the air outlets 202 opening at the bottom of the passenger seats 204 passes through the gaps between the passenger seats 204 and the aisles, and rises from the bottom to the top of the passenger compartment 201, often avoiding the individual passengers seated in the passenger seats 204. This has caused a problem in that it is difficult for passengers in the passenger seats 204 to directly enjoy the comfort of heating or cooling provided by the conditioned air.

[0010] Furthermore, because conditioned air outlets 202 that open below passenger seats 204 are formed on floor 201a, which is located around the bottom of railway vehicle 200, there is a possibility that dust and pollen that have accumulated on floor 201a may be dispersed into passenger compartment 201 along with the conditioned air, which is unhygienic. Furthermore, the conditioned air blown out from outlets 202 formed on floor 201a has no directionality and is prone to coming into contact with the seats of passenger seats 204, causing turbulence in the airflow. This causes the air around passenger seats 204 to become agitated, which is likely to lead to a decrease in air cleanliness.

[0011] Furthermore, by blowing conditioned air evenly and weakly from the outlets 202, the feeling of draftiness felt by passengers can be reduced and the power consumption of the air conditioner 101 can also be reduced, but the time required to ventilate the air in the passenger compartment 201 with new conditioned air becomes longer, and droplets dispersed when passengers talk or cough, for example, tend to remain in the surrounding area. This makes it difficult to ensure air cleanliness for passengers seated in nearby passenger seats 204, which is undesirable from the perspective of infection control.

[0012] The present invention has been made to solve such problems, and aims to provide a railway vehicle equipped with an air conditioning system that can easily improve the comfort and air cleanliness of each passenger seated in the passenger compartment. [Means for solving the problem]

[0013] In order to achieve the above object, a railway vehicle according to the present invention has the following configuration. (1) A railway vehicle equipped with an air conditioning system having an air outlet around the bottom of the car body for blowing conditioned air into a passenger compartment, and an exhaust outlet around the top of the car body for exhausting the air inside the passenger compartment to the outside of the passenger compartment, such that the conditioned air blown into the passenger compartment from the air outlet rises from the bottom to the top of the passenger compartment and is exhausted from the exhaust outlet, The air outlet is characterized in that it is formed in a passenger seat installed in the passenger compartment and is equipped with a first passenger seat air outlet formed to blow the conditioned air in all directions around the passengers sitting in the passenger seat along the bottom surface of the seat.

[0014] In the present invention, the air outlet is formed in a passenger seat installed in the passenger cabin, and is provided with a first passenger seat air outlet formed to blow conditioned air along the bottom surface of the seat in all directions around the passenger sitting in that seat.This means that conditioned air can be blown out in a concentrated manner around the passengers sitting in the seats in the passenger cabin, improving the comfort of each passenger sitting in a seat in the passenger cabin and the air cleanliness for the passengers sitting in the seats.

[0015] That is, the air outlets are formed in passenger seats installed in the passenger cabin, and include first passenger seat air outlets formed to blow conditioned air along the bottom surface of the seat in all directions toward passengers sitting in those seats, so that the conditioned air blown out from the first passenger seat air outlet can rise while surrounding each individual passenger sitting in the seat from all directions. This allows passengers in the seats to enjoy the comfort of heating or cooling by the conditioned air with their entire bodies, and improves the comfort of each passenger sitting in a seat in the passenger cabin.

[0016] Furthermore, the first passenger seat outlet is formed in a passenger seat installed in the passenger cabin and is configured to blow conditioned air along the bottom surface of the seat in all directions toward the passengers sitting in that seat, so the first passenger seat outlet can be installed at a position higher than the floor. This reduces the possibility of dust and other particles entering the duct of the first passenger seat outlet, and reduces the possibility of pollen and dust accumulated on the floor being dispersed into the passenger cabin along with the conditioned air, which is preferable from a hygienic standpoint. Furthermore, by following the bottom surface of the seat, the flow of conditioned air has a generally constant directionality, which reduces air agitation near the seats and tends to lead to improved air cleanliness.

[0017] Furthermore, the conditioned air blown from the first passenger seat outlet along the bottom surface of the seat in all directions around the passenger sitting in that seat rises upward from the outer edge of the seat, forming a barrier layer consisting of an upward flow of conditioned air that surrounds the passenger sitting in the seat from all directions. Therefore, the barrier layer can effectively prevent droplets from being dispersed to passengers sitting in adjacent seats when a passenger in a seat talks or coughs. As a result, the air cleanliness for the passenger sitting in the seat can be accurately ensured by the upward flow of conditioned air including the barrier layer, which is also preferable from the perspective of infectious disease prevention.

[0018] Therefore, according to the present invention, it is possible to provide a railway vehicle equipped with an air conditioning system that can easily improve the comfort and air cleanliness of each passenger seated in a passenger seat.

[0019] (2) A railway vehicle equipped with an air conditioning system having an air outlet around the bottom of the car body for blowing conditioned air into the passenger compartment, and an exhaust outlet around the top of the car body for exhausting the air inside the passenger compartment to the outside of the passenger compartment, such that the conditioned air blown into the passenger compartment from the air outlet rises from the bottom to the top of the passenger compartment and is exhausted from the exhaust outlet, The air outlet is formed in a passenger seat installed in the passenger compartment, and is characterized by being equipped with a second passenger seat air outlet formed to blow the conditioned air along the bottom surface of the seat in the forward and backward directions of the passengers seated in the seat.

[0020] In the present invention, the air outlet is formed in the passenger seats installed in the passenger cabin, and is equipped with a second passenger seat air outlet formed to blow conditioned air along the bottom surface of the seat in the front-to-back direction of the passengers sitting in the seats.Therefore, conditioned air can be blown out in a concentrated manner from the front-to-back direction near the passengers sitting in the seats in the passenger cabin, efficiently improving the comfort and air cleanliness of each passenger.

[0021] That is, the air outlets are formed in passenger seats installed in the passenger cabin, and include second passenger seat air outlets formed to blow conditioned air along the bottom surface of the seat in the front-to-rear direction of the passengers sitting in those seats, so that the conditioned air blown out from the second passenger seat air outlets can rise while coming into direct contact with each passenger sitting in the seats from the front-to-rear direction. As a result, passengers in the seats can directly enjoy the comfort of heating or cooling by the conditioned air from the front-to-rear direction, and the comfort of each passenger sitting in a seat in the passenger cabin can be improved.

[0022] Furthermore, the second passenger seat outlet is formed in a passenger seat installed in the passenger cabin and is configured to blow conditioned air along the bottom surface of the seat in the front-to-rear direction of the passenger sitting in that seat, allowing the second passenger seat outlet to be installed at a position higher than the floor. This reduces the possibility of dust and other particles entering the duct of the second passenger seat outlet, and also reduces the possibility of pollen and dust accumulated on the floor being dispersed into the passenger cabin along with the conditioned air, which is preferable from a hygienic standpoint. Furthermore, by flowing along the bottom surface of the seat, the flow of conditioned air has a generally constant directionality, which reduces agitation of the air near the seats and tends to lead to improved air cleanliness.

[0023] Furthermore, the conditioned air blown from the second passenger seat outlet along the bottom surface of the seat in the front-to-rear direction of the passenger sitting in that seat rises upward from the front and rear outer edges of the seat, thereby forming a barrier layer consisting of an upward flow of conditioned air that surrounds the passenger sitting in the seat from the front and rear. Therefore, the barrier layer can effectively prevent droplets from being dispersed when a passenger in a seat talks or coughs, particularly to passengers in adjacent seats in the front-to-rear direction. As a result, the air cleanliness for the passenger sitting in the seat can be efficiently ensured by the upward flow of conditioned air including the barrier layer, which is also preferable from the perspective of infectious disease prevention.

[0024] Therefore, according to the present invention, it is possible to provide a railway vehicle equipped with an air conditioning system that can easily improve the comfort and air cleanliness of each passenger seated in a passenger seat.

[0025] (3) A railway vehicle equipped with an air conditioning system having an air outlet around the bottom of the car body for blowing conditioned air into the passenger compartment, and an exhaust outlet around the top of the car body for exhausting the air inside the passenger compartment to the outside of the passenger compartment, such that the conditioned air blown into the passenger compartment from the air outlet rises from the bottom to the top of the passenger compartment and is exhausted from the exhaust outlet, The air outlet is characterized by being provided with a third passenger seat air outlet formed in a passenger seat installed in the passenger compartment and configured to blow the conditioned air along the bottom surface of the seat in the direction of passengers seated in other seats adjacent to the seat across the central aisle.

[0026] In the present invention, the air outlet is formed in a passenger seat installed in the passenger cabin, and is provided with a third passenger seat air outlet formed to blow conditioned air along the bottom surface of the seat in the direction of passengers sitting in other seats adjacent to the seat and separated by the central aisle.This makes it possible to concentrate the blowing of conditioned air in the vicinity of passengers sitting in other seats adjacent to the seat and separated by the central aisle in the passenger cabin, efficiently improving the comfort and air cleanliness of each passenger.

[0027] That is, the air outlets are formed in passenger seats installed in the passenger cabin, and include a third passenger seat air outlet formed to blow conditioned air along the bottom surface of the seat in the direction of passengers sitting in other seats adjacent to that seat and separated by the central aisle, so that the conditioned air blown out from the third passenger seat air outlet can move below the adjacent seats and rise while coming into direct contact with each seated passenger. As a result, passengers in seats adjacent to each other across the central aisle can directly enjoy the comfort of heating or cooling provided by the conditioned air blown out from the seats adjacent to them, improving the comfort of each passenger seated in the passenger cabin.

[0028] Furthermore, the third passenger seat outlet is formed in a passenger seat installed in the passenger cabin and is configured to blow conditioned air along the bottom surface of the seat in the direction of passengers sitting in other seats adjacent to that seat across the central aisle, allowing the third passenger seat outlet to be installed at a position higher than the floor. This reduces the possibility of dust and other particles entering the duct of the third passenger seat outlet and reduces the possibility of pollen and dust accumulated on the floor being dispersed into the passenger cabin along with the conditioned air, which is preferable from a hygienic standpoint. Furthermore, by following the bottom surface of the seat, the flow of conditioned air has a generally constant directionality, reducing air agitation near the seats and likely leading to improved air cleanliness.

[0029] Furthermore, conditioned air blown from the third passenger seat outlet along the bottom surface of the seat toward passengers seated in adjacent seats across the central aisle rises upward from the outer edge of the seat, forming a barrier layer consisting of an upward flow of conditioned air that surrounds the passengers seated in the adjacent seats. This barrier layer effectively prevents droplets from being dispersed when a passenger in a seat talks or coughs, particularly to passengers seated in adjacent seats across the central aisle. As a result, air cleanliness for passengers seated in adjacent seats across the central aisle can be efficiently ensured by the upward flow of conditioned air including the barrier layer, which is also preferable from the perspective of infectious disease prevention.

[0030] Therefore, according to the present invention, it is possible to provide a railway vehicle equipped with an air conditioning system that can easily improve the comfort and air cleanliness of each passenger seated in a passenger seat.

[0031] (4) A railway vehicle equipped with an air conditioning system having an air outlet around the bottom of the car body for blowing conditioned air into the passenger compartment, and an exhaust port around the top of the car body for exhausting the air inside the passenger compartment to the outside of the passenger compartment, such that the conditioned air blown into the passenger compartment from the air outlet rises from the bottom to the top of the passenger compartment and is exhausted from the exhaust port, The air outlet is characterized by being formed in a passenger seat installed in the passenger compartment and including a fourth passenger seat air outlet formed to blow the conditioned air along the bottom surface of the seat in the direction of the inner wall adjacent to the passenger seat.

[0032] In the present invention, the air outlet is formed in a passenger seat installed in the passenger compartment, and is provided with a fourth passenger seat air outlet formed to blow conditioned air along the bottom surface of the seat toward the inner wall adjacent to the seat, thereby efficiently improving the comfort and air cleanliness of each passenger through the conditioned air and cold or hot heat radiation from the inner wall.

[0033] That is, the air outlets are formed in passenger seats installed in the passenger cabin, and include a fourth passenger seat air outlet formed to blow conditioned air along the bottom surface of the seat in the direction of the interior wall adjacent to that seat, so that the interior wall can be actively cooled or heated by concentrating the blowing of conditioned air onto the interior wall located near the seated passengers. Therefore, each passenger can effectively enjoy the comfort of cooling or heating provided by the conditioned air through the conditioned air returning to the passenger side from the interior wall and the cold or warm heat radiation from the cooled or heated interior wall, thereby improving the comfort of each passenger seated in the passenger cabin.

[0034] Furthermore, the fourth passenger seat outlet is formed in a passenger seat installed in the passenger compartment and is configured to blow conditioned air along the bottom surface of the seat toward the interior wall adjacent to the seat, allowing the fourth passenger seat outlet to be installed at a position higher than the floor. This reduces the possibility of dust and other particles entering the duct of the fourth passenger seat outlet and reduces the possibility of pollen and dust accumulated on the floor being dispersed into the passenger compartment along with the conditioned air, which is preferable from a hygienic perspective. Furthermore, by flowing along the bottom surface of the seat, the conditioned air has a generally constant directionality, which reduces air agitation near the seats and tends to lead to improved air cleanliness.

[0035] Furthermore, conditioned air blown from the fourth passenger seat outlet along the bottom surface of the seat toward the adjacent inner wall reflects off the inner wall toward the passenger and rises through the gap with the outer edge of the seat, thereby forming a barrier layer consisting of an upward flow of conditioned air that surrounds the seated passenger from the inner wall side. Therefore, the barrier layer can effectively prevent droplets from being dispersed to passengers in other seats when passengers in a seat talk or cough. As a result, the upward flow of conditioned air including the barrier layer can efficiently ensure air cleanliness for passengers sitting in nearby seats, which is also preferable from the perspective of infectious disease prevention.

[0036] Therefore, according to the present invention, it is possible to provide a railway vehicle equipped with an air conditioning system that can easily improve the comfort and air cleanliness of each passenger seated in a passenger seat.

[0037] (5) In a railway vehicle described in any one of (1) to (4), The air outlet is characterized by including an air outlet for the back of the seats that blows the conditioned air rearward from the back of the seats.

[0038] In the present invention, the air outlet is provided with a backrest air outlet that blows conditioned air rearward from the backrests of the passenger seats, so that the backrests can be actively cooled or heated by the conditioned air rising along the backrests of the passenger seats. As a result, each passenger can enjoy the comfort of heating or cooling provided by the conditioned air from the backrests of the seats in front of them through the cold or warmth radiation from the backrests of the cooled or heated backrests, further improving the comfort of each passenger seated in a passenger seat in the passenger cabin.

[0039] (6) In a railway vehicle described in any one of (1) to (5), The air outlet is characterized by being equipped with a passenger air outlet formed so as to blow the conditioned air from the seat surface and / or backrest surface of the passenger seat toward the seated passengers.

[0040] In the present invention, the air outlet is provided with a passenger air outlet formed to blow conditioned air from the seat surface and / or the backrest surface of the passenger seat toward the seated passengers, so that the conditioned air blown out from the passenger air outlet can rise while coming into direct contact with each passenger seated in the passenger seat. This allows the passengers in the seats to directly enjoy the comfort of heating or cooling provided by the conditioned air, further improving the comfort of each passenger seated in the passenger compartment.

[0041] Furthermore, the barrier layer formed by the upward flow of conditioned air blown out from the passenger seat outlets is reinforced by raising the conditioned air blown out from the passenger seat outlets, and is maintained in a continuous state up to the upper part of the passenger seats. Therefore, the reinforced barrier layer can more effectively prevent droplets from being dispersed to adjacent seats when passengers in the seats talk or cough. As a result, the air cleanliness for passengers seated in the seats can be more reliably ensured by the upward flow of conditioned air including the barrier layer, which is more preferable from the perspective of infectious disease prevention.

[0042] (7) In the railway vehicles described in (6), The air conditioning system is characterized in that it is configured to be able to adjust the volume of the conditioned air blown out from the passenger outlet.

[0043] In the present invention, the air conditioning system is configured to adjust the volume of conditioned air blown out from the passenger outlets, so that the volume of conditioned air blown to each passenger seated in a passenger seat can be adjusted to suit their preferences while maintaining a barrier layer formed by the upward flow of conditioned air. This allows passengers seated in the passenger seats to enjoy optimal comfort with the conditioned air while ensuring a certain level of air cleanliness for each seat. The volume of conditioned air blown out from the passenger outlets is typically smaller than the volume of conditioned air blown out from the passenger seat outlets so as not to cause discomfort to passengers. Therefore, even when the volume of conditioned air blown out from the passenger outlets is adjusted, the change in the flow rate of the conditioned air blown out from the passenger outlets is small, and the barrier layer formed by the upward flow of conditioned air blown out from the passenger seat outlets can be easily maintained.

[0044] (8) In a railway vehicle described in any one of (1) to (7), A smooth guide surface is formed on the outer edge of the seat bottom surface to guide the flow of conditioned air blown out from the passenger seat outlet in an upward direction.

[0045] In the present invention, a smooth guide surface is formed on the outer edge of the seat bottom to guide the flow of conditioned air blown out from the passenger seat outlet in an upward direction. Therefore, the conditioned air blown out from the passenger seat outlet along the seat bottom toward the outer edge of the seat can more reliably rise upward from the outer edge of the seat along the guide surface due to the Coanda effect. This makes it possible to more stably form a barrier layer consisting of the upward flow of conditioned air surrounding passengers in the seats. As a result, air cleanliness for passengers seated in the seats can be more easily and stably ensured.

[0046] (9) In a railway vehicle described in any one of (1) to (8), The air conditioner is characterized in that an auxiliary air outlet for blowing the conditioned air upward is formed at the upper end and / or rear surface of the backrest.

[0047] In the present invention, auxiliary outlets that blow conditioned air upward are formed at the upper end and / or back of the backrest, so a barrier layer made of an upward flow of conditioned air can be more firmly formed above the backrest. Therefore, the more firmly formed barrier layer above the backrest can more reliably prevent droplets from being dispersed to adjacent seats when passengers in the seats talk or cough. As a result, air cleanliness for passengers seated in the seats can be more reliably ensured.

[0048] (10) In the railway vehicle described in any one of (1) to (9), The air conditioning system includes an air conditioning device that is installed under the underframe and generates the conditioned air, a main supply duct and a main return duct that are located under the floor of the passenger compartment and connected to the air conditioning device, and a plurality of air conditioning ducts that are connected to the main supply duct and extend to the air outlet, and the air inside the passenger compartment that is discharged outside the passenger compartment from the exhaust outlet passes through a gap between the inner wall and outer wall of the passenger compartment, returns to the main return duct, and is returned to the air conditioning device from the main return duct.

[0049] In the present invention, the air conditioning system includes an air conditioning unit installed under the underframe and generating conditioned air, a main supply duct and a main return duct located under the passenger compartment floor and connected to the air conditioning unit, and multiple air conditioning ducts connected to the main supply duct and extending to air outlets. Air inside the passenger compartment discharged from the exhaust port to the outside of the passenger compartment passes through a gap between the inner and outer walls of the passenger compartment and returns to the main return duct, and then returns to the air conditioning unit from the main return duct. This allows the exhaust duct connecting the exhaust port and the main return duct to be eliminated or shortened, resulting in a reduction in weight and cost. Furthermore, because the air inside the passenger compartment discharged from the exhaust port to the outside of the passenger compartment passes through a gap between the inner and outer walls of the passenger compartment and returns to the main return duct, the insulation of the passenger compartment can be improved and the power consumption of the air conditioning unit can be reduced. This allows an air conditioning system that can easily improve the comfort and air cleanliness of each passenger seat in the passenger compartment at a lower cost. [Effects of the Invention]

[0050] According to the present invention, it is possible to provide a railway vehicle equipped with an air conditioning system that can easily improve the comfort and air cleanliness of each passenger seated in a passenger seat. [Brief explanation of the drawings]

[0051] [Figure 1] 1 is a schematic configuration diagram of a railway vehicle illustrating one aspect of the present embodiment. [Figure 2] 2 is a cross-sectional view taken along line AA of the first embodiment of the railway vehicle shown in FIG. 1. FIG. [Figure 3] 2 is a view taken along an arrow B in the first embodiment of the railway vehicle shown in FIG. 1. FIG. [Figure 4] 2 is a cross-sectional view taken along line AA of the second embodiment of the railway vehicle shown in FIG. 1. FIG. [Figure 5] 2 is a view of the railway vehicle shown in FIG. 1 in the direction of arrow B in a second embodiment. [Figure 6] FIG. 2 is a cross-sectional view taken along line AA of the third embodiment of the railway vehicle shown in FIG. [Figure 7] 1. FIG. 4 is a view of the railway vehicle shown in FIG. 1 in the direction of arrow B in a third embodiment. [Figure 8]FIG. 2 is a cross-sectional view taken along line AA of the fourth embodiment of the railway vehicle shown in FIG. [Figure 9] 1. FIG. 4 is a view taken along an arrow B in a fourth embodiment of the railway vehicle shown in FIG. [Figure 10] FIG. 2 is a cross-sectional view taken along line AA of a modified example of the railway vehicle shown in FIG. [Figure 11] 1. FIG. 4 is a view taken along arrow B in a modified example of the railway vehicle shown in FIG. [Figure 12] FIG. 1 is a schematic diagram of a railway vehicle equipped with a conventional air conditioning system. [Figure 13] 1A and 1B are schematic diagrams of a railway vehicle air conditioning device described in Patent Document 1, in which (A) shows a part of a cross section in the width direction of the vehicle, and (B) shows a part of a cross section in the longitudinal direction of the vehicle. DETAILED DESCRIPTION OF THE INVENTION

[0052] Next, railway vehicles (first example to modified examples) representing one aspect of this embodiment will be described in detail with reference to the drawings. Specifically, the configuration and operation method of the railway vehicle according to the first example of this embodiment will be described in detail, and then railway vehicles according to the second example to modified examples will be described, focusing on the differences from the first example.

[0053] <Configuration and Operation Method of a Railway Vehicle According to a First Example of the Present Embodiment> First, the configuration and operation method of a railway vehicle according to a first example of this embodiment will be described with reference to Figures 1 to 3. Figure 1 shows a schematic configuration diagram of a railway vehicle representing one aspect of this embodiment. Figure 2 shows a cross-sectional view taken along line AA of the first example of the railway vehicle shown in Figure 1. Figure 3 shows a view taken along arrow B of the first example of the railway vehicle shown in Figure 1.

[0054] As shown in FIGS. 1 to 3, a railway vehicle 10 according to a first example of this embodiment is equipped with an air-conditioning system 10K, which has an air outlet 3 around the lower part 11 of the carbody 1 for blowing conditioned air TK into the passenger compartment 2, and an air outlet 4 around the upper part 12 of the carbody 1 for exhausting the air K K inside the passenger compartment 2 to the outside of the passenger compartment 2, such that the conditioned air TK blown out from the air outlet 3 into the passenger compartment 2 rises from the bottom to the top of the passenger compartment 2 and is exhausted from the air outlet 4. The railway vehicle 10 is also equipped with an interior passenger compartment airtight mechanism so that the air inside the passenger compartment 2 is kept airtight. The air outlets 4 include a ceiling air outlet 41 formed in the ceiling inner wall 221, an upper-shelf air outlet 42 formed in the upper inner wall 222 of the luggage rack, and an under-shelf air outlet 43 formed in the lower inner wall 223 of the luggage rack. The ceiling inner wall 221 , the upper inner wall 222 of the luggage rack, and the lower inner wall 223 of the luggage rack correspond to the upper periphery 12 of the car body 1 and form the upper part of the inner wall 22 of the passenger compartment 2 .

[0055] Further, the air outlets 3 are formed in the passenger seats 5 installed in the passenger cabin 2, and include a passenger air outlet 31 formed to blow conditioned air TK (TK1, TK2) from the seat surface 51a and / or the backrest surface 52a of the passenger seat 5 toward the seated passenger JK, and a first passenger seat air outlet 32 ​​formed to blow air in all directions around the passenger JK seated in the passenger seat 5 along the seat bottom surface 51b of the passenger seat 5. Here, the air outlet 3 includes the passenger air outlet 31 and the first passenger seat air outlet 32, but is not necessarily limited to this, and for example, only the first passenger seat air outlet 32 ​​may be provided.

[0056] Here, the passenger seats 5 installed in the passenger compartment 2 correspond to the lower area 11 of the car body 1, and although the passenger seats 5 are illustrated as two-person seats that can seat two passengers JK, they may also be one-person seats or three-person seats. The passenger seats 5 are arranged in parallel on the left and right sides of the vehicle, separated by a central aisle that extends in the direction of travel of the vehicle, within the passenger compartment 2. The passenger seats 5 are equipped with legs 53 installed on the floor surface 21 of the passenger compartment 2, a seat portion 51 supported by the legs 53, and a backrest portion 52 connected to the seat portion 51. The passenger seats 5 may be supported by the floor surface 21 or the inner wall 22, or by both the floor surface 21 and the inner wall 22.

[0057] In addition, the passenger outlet 31 is equipped with a seat outlet 31a formed to blow air from the seat surface 51a toward the seated passenger JK, and a backrest outlet 31b formed to blow air from the backrest surface 52a toward the seated passenger JK, but only one of the seat outlet 31a and the backrest outlet 31b may be used.

[0058] The seat outlet 31a is formed on the upper surface of the seat air-conditioning duct 643 inserted into the seat 51, and the conditioned air TK1 blown out from the seat outlet 31a passes through pores formed in the seat cushion material and is blown out approximately uniformly toward the seated passenger JK. The backrest outlet 31b is formed in front of the backrest air-conditioning duct 644 inserted into the backrest 52, and the conditioned air TK1 blown out from the backrest outlet 31b passes through pores formed in the backrest cushion material and is blown out approximately uniformly toward the seated passenger JK. The backrest 52 of the passenger seat 5 is preferably provided with a backrest back outlet 33 that blows air rearward from the backrest 52, but this is not necessarily required. The backrest back outlet 33 is formed on the back of the backrest air-conditioning duct 644.

[0059] The first passenger seat outlets 32 are formed radially on the side of leg air conditioning ducts 642 that are supported horizontally on the seat bottom surfaces 51b side of the legs 53, and are formed so as to blow air approximately uniformly in all directions of the seat outer edges 51c along the seat bottom surfaces 51b of the passenger seats 5. The air conditioning ducts 64 that supply conditioned air TK from the main supply duct 62 under the floor to the passenger seats 5 include a vertical air conditioning duct 641 that is connected to the main supply duct 62 and rises upward from the floor surface 21, a leg air conditioning duct 642 and a seat air conditioning duct 643 that are connected to the vertical air conditioning duct 641, and a backrest air conditioning duct 644 that is connected to the seat air conditioning duct 643.

[0060] As described above, in this railway vehicle 10, the air outlet 3 is formed in the passenger seat 5 installed in the passenger compartment 2, and is equipped with a first passenger seat air outlet 32 ​​formed to blow conditioned air TK2 in all directions around the passenger JK sitting in the passenger seat 5 along the bottom surface 51b of the seat 5.Therefore, the conditioned air TK2 can be blown out in a concentrated manner around the passenger JK sitting in the passenger seat 5 in the passenger compartment 2, thereby improving the comfort of each passenger JK sitting in the passenger seat 5 in the passenger compartment 2 and the air cleanliness for the passenger JK sitting in the passenger seat 5.

[0061] More specifically, the air outlet 3 is formed in a passenger seat 5 installed in the passenger cabin 2, and is provided with a first passenger seat air outlet 32 ​​formed to blow conditioned air TK2 in all directions around the passenger JK seated in the passenger seat 5 along the seat bottom surface 51b of the passenger seat 5. Therefore, the conditioned air TK2 blown out from the first passenger seat air outlet 32 ​​can rise while surrounding each passenger JK seated in the passenger seat 5 from all directions. Therefore, the passenger JK in the passenger seat 5 can enjoy the comfort of heating or cooling by the conditioned air TK2 with their entire body. As a result, the comfort of each passenger JK seated in the passenger seat 5 in the passenger cabin 2 can be improved.

[0062] Furthermore, the first passenger seat outlet 32 ​​is formed in the passenger seat 5 installed in the passenger cabin 2, and is formed so as to blow out conditioned air TK2 in all directions around the passenger JK seated in the passenger seat 5 along the seat bottom surface 51b of the passenger seat 5. This allows the first passenger seat outlet 32 ​​to be installed at a position higher than the floor surface 21. This reduces the possibility of dust and other particles entering the duct (leg air conditioning duct 642) of the first passenger seat outlet 32, and also reduces the possibility of pollen, dust, and other particles accumulated on the floor surface 21 being dispersed into the passenger cabin 2 along with the conditioned air TK2, which is preferable from a hygienic standpoint. Furthermore, by flowing along the seat bottom surface 51b of the passenger seat 5, the flow of conditioned air TK2 has a substantially constant directionality, which reduces agitation of the air near the passenger seat 5 and is likely to lead to improved air cleanliness.

[0063] Furthermore, the conditioned air TK2 blown from the first seat outlet 32 ​​along the seat bottom surface 51b of the seat 5 in the all-around direction of the passenger JK seated in that seat 5 rises upward from the seat outer edge 51c, thereby forming a barrier layer BS consisting of an upward flow of conditioned air TK2 that surrounds the passenger JK seated in that seat 5 from all directions. Therefore, the barrier layer BS can effectively prevent droplets HM generated when a passenger JK in a seat 5 talks, coughs, etc. from being dispersed to the passenger JK in the adjacent seat 5. As a result, the air cleanliness for the passenger JK seated in the seat 5 can be accurately ensured by the upward flow of conditioned air TK2 including the barrier layer BS, which is also preferable from the perspective of infectious disease prevention.

[0064] Furthermore, in this railway vehicle 10, the air outlets 3 are formed in passenger seats 5 installed in the passenger compartment 2, and are equipped with passenger air outlets 31 (31a, 31b) formed to blow conditioned air TK1 from the seat surface 51a and / or the backrest surface 52a of the passenger seat 5 toward the seated passengers JK, so that the conditioned air TK1 blown out from the passenger air outlets 31 can rise while coming into direct contact with each passenger JK seated in the passenger seat 5. Therefore, the passengers JK in the passenger seats 5 can directly enjoy the comfort of heating or cooling by the conditioned air TK1, and the comfort of each passenger JK seated in the passenger seat 5 in the passenger compartment 2 can be further improved.

[0065] Here, the railway vehicle 10 has exhaust ports 4 (41, 42, 43) around the upper portion 12 of the railway vehicle 10 that exhaust the air KK in the passenger compartment 2 to the outside of the passenger compartment 2. Also, it has passenger outlets 31 that are formed to blow conditioned air TK1 from the seat surface 51a and / or the backrest surface 52a of the passenger seat 5 toward the seated passenger JK.

[0066] Therefore, the conditioned air TK2 blown out from the first passenger seat outlet 32 ​​in all directions around the passenger JK sitting in the seat 5 along the seat bottom surface 51b of the seat 5 is sucked into the exhaust outlet 4 and rises upward from the seat outer edge 51c. As the conditioned air TK2 blown out in all directions around the seat outer edge 51c rises upward, it sucks in the conditioned air TK1 blown out from the passenger seat outlet 31, thereby forming a barrier layer BS made up of an upward flow of conditioned air TK2 that surrounds the entire passenger seat 5.

[0067] As described above, the barrier layer BS formed by the upward flow of conditioned air TK2 blown out from the first passenger seat outlet 32 ​​is reinforced by the upward flow of conditioned air TK1 blown out from the passenger seat outlet 31, and is maintained in a continuous state up to above the passenger seats 5. Therefore, the reinforced barrier layer BS can more effectively prevent droplets HM from being dispersed to adjacent seats 5 when passengers JK in seats 5 talk, cough, etc. As a result, the air cleanliness for passengers JK seated in seats 5 can be more reliably ensured by the upward flow of conditioned air TK1 including the barrier layer BS, which is more preferable from the perspective of infectious disease prevention measures.

[0068] In order to form the barrier layer BS with a predetermined thickness, it is preferable that the volume of the conditioned air TK2 blown out from the first passenger seat outlet 32 ​​be greater than the volume of the conditioned air TK1 blown out from the passenger seat outlet 31. It is also preferable that the wind speed of the conditioned air TK2 blown out from the first passenger seat outlet 32 ​​be a so-called gentle breeze (wind speed of about 0.5 m / s or less).

[0069] Furthermore, in the present railway vehicle 10, the air conditioning system 10K is preferably configured to be able to adjust the air volume of the conditioned air TK1 blown out from the passenger outlet 31. Here, a flow rate adjustment valve 645 is connected between the leg section air conditioning duct 642 and the seat section air conditioning duct 643. Note that the air volume of the conditioned air TK1 blown out from the passenger outlet 31 is normally less than the air volume of the conditioned air TK2 blown out from the passenger seat outlet 32 ​​so as not to cause discomfort to passengers JK. Therefore, even when the air volume of the conditioned air TK1 blown out from the passenger outlet 31 is adjusted, the change in the flow rate of the conditioned air TK2 blown out from the passenger seat outlet 32 ​​is small, and the barrier layer BS formed by the upward flow of the conditioned air TK2 blown out from the passenger seat outlet 32 ​​can be easily maintained.

[0070] In this case, by adjusting the throttle of the flow control valve 645 while maintaining the barrier layer BS, which is made up of the upward flow of conditioned air TK2 that surrounds the entire outer periphery of the passenger seats 5, in a predetermined state, the volume of airflow of the conditioned air TK1 that hits each passenger JK seated in the passenger seats 5 can be adjusted to suit their preferences. Therefore, while ensuring that the air cleanliness of each passenger seat 5 is at a certain level or higher, the passengers JK seated in the passenger seats 5 can enjoy optimal comfort for each passenger JK with respect to the conditioned air TK1.

[0071] Furthermore, in the present railway vehicle 10, the air outlets 3 preferably include backrest air outlets 33 that blow the conditioned air TK3 rearward from the backrest portions 52 of the passenger seats 5. In this case, the backrests 52b of the passenger seats 52 can be actively cooled or heated by the conditioned air TK3 rising along the backrests 52b of the passenger seats 52. Therefore, each passenger JK can enjoy the comfort of heating or cooling provided by the conditioned air TK3 from the backrests 52 of the seats in front of them through the cold or warm heat radiation from the backrests 52b of the cooled or heated passenger seats 52, further improving the comfort of each passenger JK seated in a passenger seat 5 in the passenger compartment 2.

[0072] Furthermore, in this railway vehicle 10, the air conditioning system 10K is preferably configured to include an air conditioning device 61 that is installed under the underframe 13 and generates conditioned air TK, a main supply duct 62 and a main return duct 63 that are arranged under the floor of the passenger compartment 2 and connected to the air conditioning device 61, and a plurality of air conditioning ducts 64 that are connected to the main supply duct 62 and extend to each of the air outlets 3 (31, 32), and the air KK inside the passenger compartment that is discharged to the outside of the passenger compartment from the exhaust outlets 4 (41, 42, 43) passes through a gap between the inner wall 22 and the outer wall 23 of the passenger compartment 2, returns to the main return duct 63, and returns from the main return duct 63 to the air conditioning device 61. The main supply duct 62 and the main return duct 63 extend in the longitudinal direction of the vehicle.

[0073] In this case, the exhaust duct 65 connecting the exhaust ports 4 (41, 42, 43) and the main return duct 63 can be eliminated or shortened, thereby reducing weight and costs by the amount of the eliminated or shortened exhaust duct. Here, the exhaust duct 65 directly connected to the main return duct 63 is curved up to the vicinity of the floor surface 21, but this may be eliminated.

[0074] Furthermore, the air KK inside the passenger cabin that is discharged outside the passenger cabin from the exhaust ports 4 (41, 42, 43) passes through the gap between the inner wall 22 and the outer wall 23 of the passenger cabin 2 and returns to the main return duct 63, so the passing air KK can improve the insulation of the passenger cabin 2 and reduce the power consumption of the air conditioning equipment 61. Therefore, the air conditioning system 10K that can easily improve the comfort and air cleanliness of each passenger seat 5 in the passenger cabin 2 can be realized at a lower cost.

[0075] <Configuration and Operation Method of a Railway Vehicle According to a Second Example of the Present Embodiment> Next, the configuration and operating method of a railway vehicle according to a second example of this embodiment will be described with reference to Figures 1, 4, and 5. Figure 1 shows a schematic configuration diagram of a railway vehicle representing one aspect of this embodiment. Figure 4 shows a cross-sectional view taken along line AA of the second example of the railway vehicle shown in Figure 1. Figure 5 shows a view taken along arrow B of the second example of the railway vehicle shown in Figure 1. Here, common reference numerals will be used to designate common features with the first example described above, and a description of these will be omitted, with differences being mainly described.

[0076] 1, 4, and 5, a railway vehicle 10B according to a second example of this embodiment is equipped with an air-conditioning system 10KB, which has an air outlet 3 around the lower part 11 of the carbody 1 for blowing conditioned air TK into the passenger compartment 2, an air outlet 4 around the upper part 12 of the carbody 1 for exhausting the air KK in the passenger compartment 2 to the outside of the passenger compartment 2, and the conditioned air TK blown from the air outlet 3 into the passenger compartment 2 rises from the bottom to the top of the passenger compartment 2 and is exhausted from the air outlet 4. The air outlet 3 is formed in a passenger seat 5 installed in the passenger compartment 2, and is equipped with a second passenger seat air outlet 32B formed to blow conditioned air TK2B along the seat bottom surface 51b of the passenger seat 5 in the front-to-rear direction of a passenger JK seated in the passenger seat 5. The second passenger seat air outlet 32B is formed in the front-to-rear direction on the side of a leg air-conditioning duct 642 supported horizontally on the seat bottom surface 51b side of the leg 53.

[0077] In the railway vehicle 10B of this second embodiment, the air outlet 3 is formed in the passenger seat 5 installed in the passenger compartment 2, and is equipped with a second passenger seat air outlet 32B formed to blow conditioned air TK2B along the bottom surface 51b of the seat 5 in the front-to-back direction of the passenger JK sitting in the passenger seat 5.Therefore, the conditioned air TK2B can be blown out in a concentrated manner from the front-to-back direction near the passenger JK sitting in the passenger seat 5 in the passenger compartment 2, thereby efficiently improving the comfort and air cleanliness of each passenger JK.

[0078] More specifically, the air outlet 3 is formed in a passenger seat 5 installed in the passenger cabin 2, and is provided with a second passenger seat air outlet 32B formed to blow conditioned air TK2B along the seat bottom surface 51b of the passenger seat 5 in the front-to-rear direction of the passenger JK seated in that passenger seat 5. Therefore, the conditioned air TK2B blown out from the second passenger seat air outlet 32B can rise while directly contacting each passenger JK seated in the passenger seat 5 from the front-to-rear direction. Therefore, the passenger JK in the passenger seat 5 can directly enjoy the comfort of heating or cooling by the conditioned air TK2B from the front-to-rear direction. As a result, the comfort of each passenger JK seated in the passenger seat 5 in the passenger cabin 2 can be improved.

[0079] Furthermore, the second passenger seat outlet 32B is formed in the passenger seat 5 installed in the passenger cabin 2, and is formed so as to blow out conditioned air TK2B along the seat bottom surface 51b of the passenger seat 5 in the front-to-rear direction of the passenger JK seated in that passenger seat 5. This allows the second passenger seat outlet 32B to be installed at a position higher than the floor surface 21. This reduces the possibility of dust and other particles entering the duct (leg air-conditioning duct 642) of the second passenger seat outlet 32B, and also reduces the possibility of pollen, dust, and other particles accumulated on the floor surface 21 being dispersed into the passenger cabin 2 along with the conditioned air TK2B, which is preferable from a hygienic standpoint. Furthermore, by flowing along the seat bottom surface 51b of the passenger seat 5, the flow of the conditioned air TK2B has a substantially constant directionality, which reduces agitation of the air near the passenger seat 5 and tends to lead to improved air cleanliness.

[0080] Furthermore, the conditioned air TK2B blown from the second seat outlet 32B along the seat bottom surface 51b of the seat 5 in the front-to-rear direction of the passenger JK seated in that seat 5 rises upward from the front and rear outer edges of the seat 51, thereby forming a barrier layer BS consisting of an upward flow of conditioned air TK2B that surrounds the passenger JK seated in the seat 5 from the front and rear. Therefore, the barrier layer BS can effectively prevent droplets HM generated when a passenger JK in a seat 5 talks or coughs from being dispersed to a passenger JK in an adjacent seat 5, particularly in the front-to-rear direction. As a result, the upward flow of conditioned air TK2B including the barrier layer BS can efficiently ensure air cleanliness for the passenger JK seated in the seat 5, which is also preferable from the perspective of infectious disease prevention.

[0081] Therefore, according to the present invention, it is possible to provide a railway vehicle 10B equipped with an air conditioning system 10KB that can easily improve the comfort and air cleanliness of each passenger JK seated in the passenger seat 5 in the passenger compartment 2.

[0082] Here, the air outlet 3 includes a passenger air outlet 31 and a second passenger seat air outlet 32B, but this is not necessarily limited to this, and for example, only the second passenger seat air outlet 32B may be provided. When the passenger air outlet 31 and the second passenger seat air outlet 32B are provided, it is preferable that the air conditioning system 10KB is configured to be able to adjust the air volume of the conditioned air TK1 blown out from the passenger air outlet 31. It is also preferable that the air outlet 3 includes a seat back air outlet 33 that blows the conditioned air TK3 rearward from the seat backs 52 of the passenger seats 5, but this is not necessarily limited to this.

[0083] <Configuration and operation method of a railway vehicle according to a third example of this embodiment> Next, the configuration and operating method of a railway vehicle according to a third embodiment of this invention will be described with reference to Figures 1, 6, and 7. Figure 1 shows a schematic configuration diagram of a railway vehicle representing one aspect of this invention. Figure 6 shows a cross-sectional view taken along line AA of the railway vehicle shown in Figure 1 in the third embodiment. Figure 7 shows a view taken along arrow B of the railway vehicle shown in Figure 1 in the third embodiment. Here, common reference numerals are used to denote common features with the first embodiment described above, and a description thereof will be omitted, with differences being mainly described.

[0084] As shown in Figures 1, 6 and 7, a railway vehicle 10C according to a third example of this embodiment is equipped with an air conditioning system 10KC, which has an air outlet 3 around the lower part 11 of the car body 1 for blowing conditioned air TK into the passenger compartment 2, and an exhaust outlet 4 around the upper part 12 of the car body 1 for exhausting the air KK in the passenger compartment 2 to the outside of the passenger compartment 2, so that the conditioned air TK blown out from the air outlet 3 into the passenger compartment 2 rises from the bottom to the top of the passenger compartment 2 and is exhausted from the exhaust outlet 4, and the air outlet 3 is formed in a passenger seat 5 installed in the passenger compartment 2 and has a third passenger seat air outlet 32C formed so as to blow conditioned air TK2C along the seat bottom surface 51b of the passenger seat 5 in the direction of passenger JK seated in another passenger seat 5 adjacent to the passenger seat 5 across the central aisle 21a.

[0085] In the railway vehicle 10C of this third embodiment, the air outlet 3 is formed in a passenger seat 5 installed in the passenger compartment 2, and is equipped with a third passenger seat air outlet 32C that is formed to blow conditioned air TK2C along the bottom surface 51b of the seat 5 in the direction of passengers JK seated in other passenger seats 5 adjacent to the passenger seat 5 across the central aisle 21a.Therefore, the conditioned air TK2C can be blown out in a concentrated manner near passengers JK seated in other passenger seats 5 adjacent to the passenger seat 5 across the central aisle 21a in the passenger compartment 2, and the comfort and air cleanliness of each passenger JK can be efficiently improved.

[0086] More specifically, the air outlet 3 is formed in a passenger seat 5 installed in the passenger cabin 2, and is provided with a third passenger seat air outlet 32C formed to blow conditioned air TK2C along the seat bottom surface 51b of the passenger seat 5 in the direction of passengers JK seated in other passenger seats 5 adjacent to the passenger seat 5 across the central aisle 21a. Therefore, the conditioned air TK2C blown out from the third passenger seat air outlet 32C can rise while directly contacting each passenger JK seated in the adjacent passenger seats 5. Therefore, passengers JK in adjacent passenger seats 5 across the central aisle 21a can directly enjoy the comfort of heating or cooling by the conditioned air TK2C blown out from the adjacent passenger seats 5. As a result, the comfort of each passenger JK seated in a passenger seat 5 in the passenger cabin 2 can be improved.

[0087] Furthermore, the third passenger seat outlet 32C, which is adjacent to each other across the central aisle 21a, can reduce interference of the conditioned air TK2C near the central aisle 21a by making the height or timing at which the conditioned air TK2C is blown out differently from each other.

[0088] Furthermore, the third passenger seat outlet 32C is formed in a passenger seat 5 installed in the passenger cabin 2 and is configured to blow conditioned air TK2C along the seat bottom surface 51b of the passenger seat 5 toward passengers JK seated in other passenger seats 5 adjacent to the passenger seat 5 across the central aisle 21a. This allows the third passenger seat outlet 32C to be installed at a position higher than the floor surface 21. This reduces the possibility of dust and other particles entering the duct (leg air conditioning duct 642) of the third passenger seat outlet 32C and reduces the possibility of pollen, dust, and other particles accumulated on the floor surface 21 being dispersed into the passenger cabin 2 along with the conditioned air TK2C, which is preferable from a hygienic standpoint. Furthermore, by flowing along the seat bottom surface 51b of the passenger seat 5, the flow of conditioned air TK2C has a substantially constant directionality, which reduces agitation of the air near the passenger seat 5 and tends to lead to improved air cleanliness.

[0089] Furthermore, the conditioned air TK2C blown from the third seat outlet 32C along the seat bottom surface 51b of the seat 5 toward a passenger JK seated in another seat 5 adjacent to the seat 5 across the central aisle 21a rises upward from the seat outer edge 51c of the adjacent seat 5, thereby forming a barrier layer BS consisting of an upward flow of conditioned air TK2C that surrounds the passenger JK seated in the adjacent seat 5. Therefore, the barrier layer BS can effectively prevent droplets HM emitted when a passenger JK in a seat 5 talks or coughs from being dispersed, particularly to a passenger JK in another seat 5 adjacent across the central aisle 21a. As a result, the upward flow of conditioned air TK2C including the barrier layer BS can efficiently ensure air cleanliness for the passenger JK seated in the adjacent seat 5 across the central aisle 21a, which is also preferable from the perspective of infectious disease prevention.

[0090] Therefore, according to the railway vehicle 10C of this third embodiment, a railway vehicle 10C can be provided that is equipped with an air conditioning system 10KC that can easily improve the comfort and air cleanliness of each passenger JK seated in the passenger seats 5 in the passenger compartment 2.

[0091] Here, the air outlet 3 includes a passenger air outlet 31 and a third passenger seat air outlet 32C, but this is not necessarily limited to this, and for example, only the third passenger seat air outlet 32C may be provided. When the passenger air outlet 31 and the third passenger seat air outlet 32C are provided, it is preferable that the air conditioning system 10KC is configured to be able to adjust the air volume of the conditioned air TK1 blown out from the passenger air outlet 31. Furthermore, it is preferable that the air outlet 3 includes a seat back air outlet 33 that blows the conditioned air TK3 rearward from the seat backs 52 of the passenger seats 5, but this is not necessarily limited to this.

[0092] <Configuration and Operation Method of a Railway Vehicle According to a Fourth Example of the Present Embodiment> Next, the configuration and operating method of a railway vehicle according to a fourth embodiment of this invention will be described with reference to Figs. 1, 8, and 9. Fig. 1 shows a schematic configuration diagram of a railway vehicle representing one aspect of this invention. Fig. 8 shows a cross-sectional view taken along line AA of the fourth embodiment of the railway vehicle shown in Fig. 1. Fig. 9 shows a view taken along arrow B of the fourth embodiment of the railway vehicle shown in Fig. 1. Here, common reference numerals are used to designate common features with the first embodiment described above, and a description thereof will be omitted, with differences being mainly described.

[0093] As shown in Figures 1, 8 and 9, a railway vehicle 10D according to a fourth example of this embodiment is a railway vehicle 10D equipped with an air conditioning system 10KD, which has an air outlet 3 around the lower part 11 of the car body 1 that blows out conditioned air TK into the passenger compartment 2, and an exhaust outlet 4 around the upper part 12 of the car body 1 that exhausts the air KK in the passenger compartment 2 to the outside of the passenger compartment 2, so that the conditioned air TK blown out from the air outlet 3 into the passenger compartment 2 rises from the bottom to the top of the passenger compartment 2 and is exhausted from the exhaust outlet 4, and the air outlet 3 is formed in a passenger seat 5 installed in the passenger compartment 2 and has a fourth passenger seat air outlet 32D formed so as to blow out conditioned air TK2D along the seat bottom surface 51b of the passenger seat 5 in the direction of the inner wall 22 adjacent to the passenger seat 5.

[0094] In the railway vehicle 10D of this fourth embodiment, the air outlet 3 is formed in a passenger seat 5 installed in the passenger compartment 2, and is equipped with a fourth passenger seat air outlet 32D formed to blow conditioned air TK2D along the seat bottom surface 51b of the passenger seat 5 toward the inner wall 22 adjacent to the passenger seat 5, so that the comfort and air cleanliness of each passenger JK can be efficiently improved by the conditioned air TK2D and cold or hot heat radiation from the inner wall 22.

[0095] More specifically, the air outlet 3 is formed in a passenger seat 5 installed in the passenger cabin 2, and includes a fourth passenger seat air outlet 32D formed to blow conditioned air TK2D along the seat bottom surface 51b of the passenger seat 5 toward the inner wall 22 adjacent to the passenger seat 5. Therefore, by concentrating the blowing of conditioned air TK2D onto the inner wall 22 located near the seated passenger JK, the inner wall 22 can be actively cooled or heated. Therefore, each passenger JK can effectively enjoy the comfort of cooling or heating provided by the conditioned air TK2D through the conditioned air TK2D returning from the inner wall 22 to the passenger seat side and the cold or hot heat radiation from the cooled or heated inner wall 22. As a result, the comfort of each passenger JK seated in the passenger seat 5 in the passenger cabin 2 can be improved.

[0096] Furthermore, the fourth passenger seat outlet 32D is formed in the passenger seat 5 installed in the passenger cabin 2, and is configured to blow out conditioned air TK2D along the seat bottom surface 51b of the passenger seat 5 toward the interior wall 22 adjacent to the passenger seat 5, so that the fourth passenger seat outlet 32D can be installed at a position higher than the floor surface 21. This reduces the possibility of dust and other particles entering the duct 642 of the fourth passenger seat outlet 32D, and also reduces the possibility of pollen, dust, and other particles accumulated on the floor surface 21 being dispersed into the passenger cabin 2 along with the conditioned air TK2D, which is preferable from a hygienic standpoint. Furthermore, by flowing along the seat bottom surface 51b of the passenger seat 5, the flow of conditioned air TK2D has a substantially constant directionality, which reduces agitation of the air near the passenger seat 5 and tends to lead to improved air cleanliness.

[0097] Furthermore, conditioned air TK2D blown from the fourth passenger seat outlet 32D along the seat bottom surface 51b of the passenger seat 5 toward the adjacent inner wall 22 is reflected from the inner wall 22 toward the passenger JK and rises upward through the gap with the outer edge of the seat, thereby forming a barrier layer BS consisting of an upward flow of conditioned air TK2D that surrounds the seated passenger JK from the inner wall side. Therefore, the barrier layer BS can effectively prevent droplets HM generated when a passenger JK in a seat 5 talks or coughs from being dispersed to passenger JK in other seats 5. As a result, the upward flow of conditioned air TK2D including the barrier layer BS can efficiently ensure air cleanliness for passengers JK seated in nearby seats 5, which is also preferable from the perspective of infectious disease prevention.

[0098] Therefore, according to the railway vehicle 10D of this fourth embodiment, a railway vehicle 10D can be provided that is equipped with an air conditioning system 10KD that can easily improve the comfort and air cleanliness of each passenger JK seated in the passenger seats 5 in the passenger compartment 2.

[0099] Here, the air outlets 3 include a passenger air outlet 31 and a fourth passenger seat air outlet 32D, but this is not necessarily limited to this, and for example, only the fourth passenger seat air outlet 32D may be used. When the passenger air outlet 31 and the fourth passenger seat air outlet 32D are provided, it is preferable that the air conditioning system 10KD be configured to be able to adjust the air volume of the conditioned air TK1 blown out from the passenger air outlet 31. It is also preferable that the air outlets 3 include a seat back air outlet 33 that blows the conditioned air TK3 rearward from the seat backs 52 of the passenger seats 5, but this is not necessarily limited to this.

[0100] <Modification> Although the railway cars 10, 10B, 10C, and 10D according to the present embodiment have been described in detail above, the present invention is not limited thereto, and various modifications are possible without departing from the spirit of the present invention. For example, in the present embodiment, passenger seat outlets 32, 32B, 32C, and 32D are provided, which are formed so as to blow out conditioned air TK2, TK2B, TK2C, and TK2D along the seat bottom surfaces 51b of the passenger seats 5. Therefore, the seat bottom surfaces 51b of the passenger seats 5 are formed in a flat shape. However, this is not necessarily limited thereto.

[0101] For example, as in a railway vehicle 10E shown in Fig. 10, a smooth guide surface 51d that guides the flow of conditioned air TK2 (TK2B, TK2C, TK2D) blown out from passenger seat outlets 32 (32B, 32C, 32D) in an upward direction may be formed on the outer edge side of seat bottom surface 51b. Here, guide surface 51d is formed as a smooth surface that slopes smoothly upward from flat seat bottom surface 51b toward seat outer edge 51c.

[0102] In this case, the conditioned air TK2 (TK2B, TK2C, TK2D) blown out from the passenger seat outlets 32 (32B, 32C, 32D) along the seat bottom surface 51b of the passenger seat 5 toward the outer edge of the seat can rise more reliably upward from the outer edge of the seat along the guide surface 51d due to the Coanda effect. Therefore, a barrier layer BSS consisting of an upward flow of conditioned air TK2 (TK2B, TK2C, TK2D) surrounding the passenger JK seated in the passenger seat 5 can be more stably formed. As a result, the air cleanliness for the passenger JK seated in the passenger seat 5 can be ensured more easily and stably.

[0103] Furthermore, for example, in this embodiment, the air outlets 3 include air outlets 33 for the backrests that blow conditioned air TK3 rearward from the backrest portions 52 of the passenger seats 5, but this is not necessarily limited to this. For example, as in a railway vehicle 10E shown in Figures 10 and 11, an auxiliary air outlet 34 that blows conditioned air TK4 upward may be formed in the upper end portion 52c and / or the back surface 52b of the backrest portion 52. Here, the upper end portion 52c and the back surface 52b of the backrest portion 52 are respectively formed with auxiliary air outlets 34 (34a, 34b) that blow conditioned air TK4 upward, but it is also possible to form only one of the auxiliary air outlet 34a in the upper end portion 52c of the backrest portion 52 or the auxiliary air outlet 34b in the back surface 52b.

[0104] In this case, the conditioned air TK2 (TK2B, TK2C, TK2D) blown out from the passenger seat outlets 32 (32B, 32C, 32D) and the conditioned air TK4 blown upward from the auxiliary outlets 34 (34a, 34b) join together, and a barrier layer BSS consisting of the upward flow of the joined conditioned air TK (TK2 (TK2B, TK2C, TK2D) + TK4) can be more firmly formed above the backrest section 52. Therefore, the more firmly formed barrier layer BSS above the backrest section 52 can more reliably prevent droplets HM generated when a passenger JK in a seat 5 talks or coughs from being dispersed to an adjacent seat 5. As a result, the air cleanliness for the passenger JK seated in the seat 5 can be more reliably ensured.

[0105] In addition, for example, in this embodiment, the second passenger seat outlet 32B, the third passenger seat outlet 32C, and the fourth passenger seat outlet 32D are each provided independently, but this is not necessarily limited to this. For example, a combination of multiple passenger seat outlets selected from the second passenger seat outlet 32B, the third passenger seat outlet 32C, and the fourth passenger seat outlet 32D may be used. This further improves the comfort and air cleanliness of the air conditioning system for passengers seated in seats 5.

[0106] Also, for example, in this embodiment, the air KK inside the passenger compartment that is discharged outside the passenger compartment from the exhaust ports 4 (41, 42, 43) passes through the gap between the inner wall 22 and the outer wall 23 of the passenger compartment 2, returns to the main return duct 63, and is returned to the air conditioning equipment 61 from the main return duct 63. Here, the exhaust ports 4 (41, 42, 43) etc. are not provided with exhaust fans, but an exhaust fan may be provided in the return path to reinforce the suction function of the air conditioning equipment 61. By providing an exhaust fan in the return path, it is possible to more firmly form barrier layers BS, BSS consisting of the upward flow of conditioned air TK, and it is possible to further increase the air cleanliness for passengers JK seated in the seats 5.

[0107] <Action and effect> According to the railway vehicle 10 of this embodiment described in detail above, the air outlet 3 is formed in the passenger seat 5 installed in the passenger compartment 2, and is equipped with a first passenger seat air outlet 32 ​​formed to blow conditioned air TK2 in all directions around the passenger JK seated in the passenger seat 5 along the bottom surface 51b of the seat 5.Therefore, the conditioned air TK2 can be blown out in a concentrated manner around the passenger JK seated in the passenger seat 5 in the passenger compartment 2, thereby improving the comfort of each passenger JK seated in the passenger seat 5 in the passenger compartment 2 and the air cleanliness for the passenger JK seated in the passenger seat 5.

[0108] That is, the air outlet 3 is formed in a passenger seat 5 installed in the passenger cabin 2, and is provided with a first passenger seat air outlet 32 ​​formed to blow conditioned air TK2 in all directions around the passenger JK seated in that passenger seat 5 along the seat bottom surface 51b of the passenger seat 5, so that the conditioned air TK2 blown out from the first passenger seat air outlet 32 ​​can rise while surrounding each passenger JK seated in the passenger seat 5 from all directions. Therefore, the passenger JK in the passenger seat 5 can enjoy the comfort of heating or cooling by the conditioned air TK2 with their entire body, and the comfort of each passenger JK seated in the passenger seat 5 in the passenger cabin 2 can be improved.

[0109] Furthermore, the first passenger seat outlet 32 ​​is formed in the passenger seat 5 installed in the passenger cabin 2, and is formed so as to blow out conditioned air TK2 in all directions around the passenger JK seated in the passenger seat 5 along the seat bottom surface 51b of the passenger seat 5. This allows the first passenger seat outlet 32 ​​to be installed at a position higher than the floor surface 21. This reduces the possibility of dust and other particles entering the duct 642 of the first passenger seat outlet 32, and also reduces the possibility of pollen, dust, and other particles accumulated on the floor surface 21 being dispersed into the passenger cabin 2 along with the conditioned air TK2, which is preferable from a hygienic standpoint. Furthermore, by flowing along the seat bottom surface 51b of the passenger seat 5, the flow of conditioned air TK2 has a substantially constant directionality, which reduces agitation of the air around the passenger seat 5 and is likely to lead to improved air cleanliness.

[0110] Furthermore, the conditioned air TK2 blown from the first seat outlet 32 ​​along the seat bottom surface 51b of the seat 5 in the all-around direction of the passenger JK seated in that seat 5 rises upward from the seat outer edge 51c, thereby forming a barrier layer BS consisting of an upward flow of conditioned air TK2 that surrounds the passenger JK seated in that seat 5 from all directions. Therefore, the barrier layer BS can effectively prevent droplets HM generated when a passenger JK in a seat 5 talks, coughs, etc. from being dispersed to the passenger JK in the adjacent seat 5. As a result, the air cleanliness for the passenger JK seated in the seat 5 can be accurately ensured by the upward flow of conditioned air TK2 including the barrier layer BS, which is also preferable from the perspective of infectious disease prevention.

[0111] Therefore, according to this embodiment, it is possible to provide a railway vehicle 10 equipped with an air conditioning system 10K that can easily improve the comfort and air cleanliness of each passenger JK seated in the passenger seats 5 in the passenger compartment 2.

[0112] Furthermore, according to this embodiment, the air outlet 3 is formed in the passenger seat 5 installed in the passenger cabin 2, and is provided with a second passenger seat air outlet 32B formed to blow conditioned air TK2B in the front-to-back direction of the passenger JK seated in the passenger seat 5 along the bottom surface 51b of the seat 5. Therefore, the conditioned air TK2B can be blown out in a concentrated manner from the front-to-back direction near the passenger JK seated in the passenger seat 5 in the passenger cabin 2, thereby efficiently improving the comfort and air cleanliness of each passenger JK.

[0113] That is, the air outlet 3 is formed in a passenger seat 5 installed in the passenger cabin 2, and is provided with a second passenger seat air outlet 32B formed to blow out conditioned air TK2B along the seat bottom surface 51b of the passenger seat 5 in the front-to-rear direction of the passenger JK sitting in that passenger seat 5, so that the conditioned air TK2B blown out from the second passenger seat air outlet 32B can rise while directly contacting each passenger JK sitting in the passenger seat 5 from the front-to-rear direction. Therefore, the passenger JK in the passenger seat 5 can directly enjoy the comfort of heating or cooling by the conditioned air TK2B from the front-to-rear direction, and the comfort of each passenger JK sitting in the passenger seat 5 in the passenger cabin 2 can be improved.

[0114] Furthermore, the second passenger seat outlet 32B is formed in the passenger seat 5 installed in the passenger cabin 2, and is formed so as to blow out conditioned air TK2B along the seat bottom surface 51b of the passenger seat 5 in the front-to-rear direction of the passenger JK seated in that passenger seat 5, so that the second passenger seat outlet 32B can be installed at a position higher than the floor surface 21. This reduces the possibility of dust and other particles entering the duct 642 of the second passenger seat outlet 32B, and also reduces the possibility of pollen, dust, and other particles accumulated on the floor surface 21 being dispersed into the passenger cabin 2 along with the conditioned air TK2B, which is preferable from a hygienic standpoint. Furthermore, by flowing along the seat bottom surface 51b of the passenger seat 5, the flow of the conditioned air TK2B has a substantially constant directionality, which reduces agitation of the air near the passenger seat 5 and is likely to lead to improved air cleanliness.

[0115] Furthermore, the conditioned air TK2B blown from the second seat outlet 32B along the seat bottom surface 51b of the seat 5 in the front-to-rear direction of the passenger JK seated in that seat 5 rises upward from the front and rear outer edges of the seat 51, thereby forming a barrier layer BS consisting of an upward flow of conditioned air TK2B that surrounds the passenger JK seated in the seat 5 from the front and rear. Therefore, the barrier layer BS can effectively prevent droplets HM generated when a passenger JK in a seat 5 talks or coughs from being dispersed to a passenger JK in an adjacent seat 5, particularly in the front-to-rear direction. As a result, the upward flow of conditioned air TK2B including the barrier layer BS can efficiently ensure air cleanliness for the passenger JK seated in the seat 5, which is also preferable from the perspective of infectious disease prevention.

[0116] Therefore, according to this embodiment, a railway vehicle 10B equipped with an air conditioning system 10KB that can easily improve the comfort and air cleanliness of each passenger JK seated in the passenger seat 5 in the passenger compartment 2 can be provided.

[0117] Furthermore, according to this embodiment, the air outlet 3 is formed in a passenger seat 5 installed in the passenger cabin 2, and is provided with a third passenger seat air outlet 32C formed to blow conditioned air TK2C along the seat bottom surface 51b of the passenger seat 5 in the direction of passengers JK seated in other passenger seats 5 adjacent to the passenger seat 5 across the central aisle 21a.Therefore, the conditioned air TK2C can be blown out in a concentrated manner near passengers JK seated in other passenger seats 5 adjacent to the passenger seat 5 across the central aisle 21a in the passenger cabin 2, thereby efficiently improving the comfort and air cleanliness of each passenger JK.

[0118] That is, the air outlet 3 is formed in a passenger seat 5 installed in the passenger cabin 2, and is provided with a third passenger seat air outlet 32C formed to blow conditioned air TK2C along the seat bottom surface 51b of the passenger seat 5 in the direction of passengers JK seated in other passenger seats 5 adjacent to that passenger seat 5 and separated by the central aisle 21a. Therefore, the conditioned air TK2C blown out from the third passenger seat air outlet 32C moves below the adjacent passenger seats 5 and can rise while coming into direct contact with each passenger JK seated in the adjacent seats 5. Therefore, passengers JK in adjacent seats 5 separated by the central aisle 21a can directly enjoy the comfort of heating or cooling by the conditioned air TK2C blown out from the adjacent seats 5, and the comfort of each passenger JK seated in the passenger seat 5 in the passenger cabin 2 can be improved. Furthermore, the third passenger seat outlet 32C, which is adjacent to each other across the central aisle 21a, can reduce interference of the conditioned air TK2C near the central aisle 21a by making the height or timing at which the conditioned air TK2C is blown out differently from each other.

[0119] Furthermore, the third passenger seat outlet 32C is formed in a passenger seat 5 installed in the passenger cabin 2 and is configured to blow conditioned air TK2C along the seat bottom surface 51b of the passenger seat 5 toward passengers JK seated in other passenger seats 5 adjacent to the passenger seat 5 across the central aisle 21a. This allows the third passenger seat outlet 32C to be installed at a position higher than the floor surface 21. This reduces the possibility of dust or other foreign matter entering the duct 642 of the third passenger seat outlet 32C and reduces the possibility of pollen or dust accumulated on the floor surface 21 being dispersed into the passenger cabin 2 along with the conditioned air TK2C, which is preferable from a hygienic standpoint. Furthermore, by flowing along the seat bottom surface 51b of the passenger seat 5, the flow of conditioned air TK2C has a substantially constant directionality, which reduces agitation of the air near the passenger seat 5 and tends to lead to improved air cleanliness.

[0120] Furthermore, the conditioned air TK2C blown from the third seat outlet 32C along the seat bottom surface 51b of the seat 5 toward a passenger JK seated in another seat 5 adjacent to the seat 5 across the central aisle 21a rises upward from the seat outer edge 51c of the adjacent seat 5, thereby forming a barrier layer BS consisting of an upward flow of conditioned air TK2C that surrounds the passenger JK seated in the adjacent seat 5. Therefore, the barrier layer BS can effectively prevent droplets HM emitted when a passenger JK in a seat 5 talks or coughs from being dispersed, particularly to a passenger JK in another seat 5 adjacent across the central aisle 21a. As a result, the upward flow of conditioned air TK2C including the barrier layer BS can efficiently ensure air cleanliness for the passenger JK seated in the adjacent seat 5 across the central aisle 21a, which is also preferable from the perspective of infectious disease prevention.

[0121] Therefore, according to this embodiment, a railway vehicle 10C equipped with an air conditioning system 10KC that can easily improve the comfort and air cleanliness of each passenger JK seated in the passenger seats 5 in the passenger compartment 2 can be provided.

[0122] Furthermore, according to this embodiment, the air outlet 3 is formed in the passenger seat 5 installed in the passenger cabin 2, and is provided with a fourth passenger seat air outlet 32D formed to blow out conditioned air TK2D along the seat bottom surface 51b of the passenger seat 5 toward the inner wall 22 adjacent to the passenger seat 5, so that the comfort and air cleanliness of each passenger JK can be efficiently improved by the conditioned air TK2D from the inner wall 22 and cold or hot heat radiation.

[0123] That is, the air outlet 3 is formed in a passenger seat 5 installed in the passenger cabin 2, and is provided with a fourth passenger seat air outlet 32D formed to blow conditioned air TK2D along the seat bottom surface 51b of the passenger seat 5 toward the inner wall 22 adjacent to the passenger seat 5. Therefore, by concentrating the blowing of conditioned air TK2D onto the inner wall 22 located near the seated passenger JK, the inner wall 22 can be actively cooled or heated. Therefore, each passenger JK can effectively enjoy the comfort of cooling or heating provided by the conditioned air TK2D through the conditioned air TK2D returning to the passenger side from the inner wall 22 and the cold or hot heat radiation from the cooled or heated inner wall 22. As a result, the comfort of each passenger JK seated in a passenger seat 5 in the passenger cabin 2 can be improved.

[0124] Furthermore, the fourth passenger seat outlet 32D is formed in the passenger seat 5 installed in the passenger cabin 2, and is configured to blow out conditioned air TK2D along the seat bottom surface 51b of the passenger seat 5 toward the interior wall 22 adjacent to the passenger seat 5, so that the fourth passenger seat outlet 32D can be installed at a position higher than the floor surface 21. This reduces the possibility of dust and other particles entering the duct 642 of the fourth passenger seat outlet 32D, and also reduces the possibility of pollen, dust, and other particles accumulated on the floor surface 21 being dispersed into the passenger cabin 2 along with the conditioned air TK2D, which is preferable from a hygienic standpoint. Furthermore, by flowing along the seat bottom surface 51b of the passenger seat 5, the flow of conditioned air TK2D has a substantially constant directionality, which reduces agitation of the air near the passenger seat 5 and tends to lead to improved air cleanliness.

[0125] Furthermore, conditioned air TK2D blown from the fourth passenger seat outlet 32D along the seat bottom surface 51b of the passenger seat 5 toward the adjacent inner wall 22 is reflected from the inner wall 22 toward the passenger JK and rises upward through the gap with the outer edge of the seat, thereby forming a barrier layer BS consisting of an upward flow of conditioned air TK2D that surrounds the seated passenger JK from the inner wall side. Therefore, the barrier layer BS can effectively prevent droplets HM generated when a passenger JK in a seat 5 talks or coughs from being dispersed to passenger JK in other seats 5. As a result, the upward flow of conditioned air TK2D including the barrier layer BS can efficiently ensure air cleanliness for passengers JK seated in nearby seats 5, which is also preferable from the perspective of infectious disease prevention.

[0126] Therefore, according to this embodiment, a railway vehicle 10D equipped with an air conditioning system 10KD that can easily improve the comfort and air cleanliness of each passenger JK seated in the passenger seat 5 in the passenger compartment 2 can be provided.

[0127] Furthermore, according to this embodiment, the air outlet 3 is provided with a backrest outlet 33 that blows conditioned air TK3 rearward from the backrest portions 52 of the passenger seats 5, so that the backrests 52b of the passenger seats 52 can be actively cooled or heated by the conditioned air TK3 rising along the backrests 52b of the passenger seats 52. As a result, each passenger JK can enjoy the comfort of heating or cooling provided by the conditioned air TK3 from the backrests 52 of the seats in front of them through the cold or warm heat radiation from the backrests 52b of the cooled or heated passenger seats 52, further improving the comfort of each passenger JK seated in a passenger seat 5 in the passenger cabin 2.

[0128] Furthermore, according to this embodiment, the air outlet 3 is provided with a passenger air outlet 31 that is formed to blow the conditioned air TK1 from the seat surface 51a and / or the backrest surface 52a of the passenger seat 5 toward the seated passenger JK, so that the conditioned air TK1 blown out from the passenger air outlet 31 can rise while coming into direct contact with each passenger JK seated in the passenger seat 5. Therefore, the passenger JK in the passenger seat 5 can directly enjoy the comfort of heating or cooling by the conditioned air TK1, and the comfort of each passenger JK seated in the passenger seat 5 in the passenger cabin 2 can be further improved.

[0129] Furthermore, the barrier layer BS, which is made up of the upward flow of conditioned air TK2, TK2B, TK2C, and TK2D blown out from passenger seat outlets 32, 32B, 32C, and 32D, is reinforced by raising the conditioned air TK1 blown out from passenger outlet 31, and is maintained in a continuous state up to above passenger seats 5. Therefore, the reinforced barrier layer BS can more effectively prevent droplets HM from being dispersed to adjacent seats 5 when passengers JK in seats 5 talk or cough. As a result, the air cleanliness for passengers JK seated in seats 5 can be more reliably ensured by the upward flow of conditioned air TK1 including the barrier layer BS, which is more preferable from the perspective of infectious disease prevention measures.

[0130] Furthermore, according to this embodiment, air conditioning systems 10K, 10KB, 10KC, 10KD, and 10KE are configured to be able to adjust the air volume of conditioned air TK1 blown out from passenger outlets 31, so that the air volume of conditioned air TK1 blowing on each passenger JK seated in a passenger seat 5 can be adjusted to suit their preference while maintaining the barrier layer BS made up of the ascending flows of conditioned air TK2, TK2B, TK2C, and TK2D in a predetermined state. Therefore, while ensuring a certain level of air cleanliness for each passenger seat 5 or higher, passengers JK seated in the passenger seats 5 can enjoy optimal comfort for each passenger JK with respect to the conditioned air TK1.

[0131] Furthermore, according to this embodiment, a smooth guide surface 51d is formed on the outer edge of the seat bottom surface 51b, guiding the flow of conditioned air TK2, TK2B, TK2C, and TK2D blown out from the passenger seat outlets 32, 32B, 32C, and 32D in an upward direction. Therefore, the conditioned air TK2, TK2B, TK2C, and TK2D blown out from the passenger seat outlets 32, 32B, 32C, and 32D along the seat bottom surface 51b toward the seat outer edge can more reliably rise upward from the seat outer edge 51c along the guide surface 51d due to the Coanda effect. Therefore, a barrier layer BS consisting of the upward flow of conditioned air TK2, TK2B, TK2C, and TK2D surrounding the passenger JK seated in the passenger seat 5 can be more reliably formed. As a result, air cleanliness for the passenger JK seated in the passenger seat 5 can be more easily and reliably ensured.

[0132] Furthermore, according to this embodiment, auxiliary outlets 34 that blow out conditioned air TK4 upward are formed in the upper end 52c and / or back surface 52b of the backrest portion 52, so that a barrier layer BSS consisting of an upward flow of conditioned air TK4 can be more firmly formed above the backrest portion 52. Therefore, the more firmly formed barrier layer BSS above the backrest portion 52 can more reliably prevent droplets HM generated when a passenger JK in a seat 5 talks, coughs, or the like from scattering to an adjacent seat 5. As a result, air cleanliness for passengers JK seated in the seats 5 can be more reliably ensured.

[0133] Furthermore, according to this embodiment, the air conditioning systems 10K, 10KB, 10KC, 10KD, and 10KE each include an air conditioning unit 61 that is installed under the frame 13 and generates conditioned air TK, a main supply duct 62 and a main return duct 63 that are located under the floor of the passenger compartment 2 and connected to the air conditioning unit 61, and a plurality of air conditioning ducts 64 that are connected to the main supply duct 62 and extend to the air outlet 3. The air KK in the passenger compartment 2 that is discharged outside the passenger compartment 2 from the exhaust port 4 passes through the gap between the inner wall 22 and the outer wall 23 of the passenger compartment 2 and returns to the main return duct 63, and then returns from the main return duct 63 to the air conditioning unit 61. Therefore, the exhaust duct 65 connecting the exhaust port 4 and the main return duct 63 can be eliminated or shortened, which reduces weight by the amount of the eliminated or shortened exhaust duct and reduces costs. Furthermore, the air KK inside the passenger cabin 2 that is discharged outside the passenger cabin 2 from the exhaust port 4 passes through the gap between the inner wall 22 and the outer wall 23 of the passenger cabin 2 and returns to the main return duct 63, thereby improving the insulation of the passenger cabin 2 and reducing the power consumption of the air conditioning equipment 61. Therefore, the air conditioning systems 10K, 10KB, 10KC, 10KD, and 10KE that can easily improve the comfort and air cleanliness of passengers JK seated in the seats 5 inside the passenger cabin 2 can be realized at a lower cost. [Industrial Applicability]

[0134] The present invention can be used as a railway vehicle equipped with an air conditioning system that can easily improve the comfort and air cleanliness of each passenger seated in a passenger seat. [Explanation of symbols]

[0135] 1. Body 2 guest rooms 3 Air outlet 4 exhaust port 5 Audience seats 10, 10B, 10C railcars 10D, 10E railcars 10K, 10KB, 10KC air conditioning system 10KD, 10KE air conditioning system 11 Lower area 12 Upper area 13 Frame 21 Floor 21a Central aisle 22 Inner wall 23 Exterior Wall 31 Passenger air outlet 32, 32B, 32C, 32D Audience seating outlets 33 Back air outlet 34 Auxiliary air outlet 51 Seat area 51a Seat surface 51b Bottom of seat 51c Outer edge of seat 51d Guide surface 52 Backrest 52a Backrest surface 52b back 52c Upper end 61 Air conditioning equipment 62 Main supply duct 63 Main return duct 64 Air conditioning duct JK passenger KK Air TK, TK1, TK2, TK3 Conditioned air TK2B, TK2C, TK2D Conditioned air

Claims

1. A railway vehicle equipped with an air conditioning system having an air outlet around the lower part of a car body for blowing conditioned air into a passenger compartment, and an exhaust outlet around the upper part of the car body for exhausting air from the passenger compartment to the outside of the passenger compartment, wherein the conditioned air blown out from the air outlet into the passenger compartment rises from the lower part to the upper part of the passenger compartment and is exhausted from the exhaust outlet, the air outlet is provided with a first passenger seat air outlet formed in a passenger seat installed in the passenger compartment and formed to blow the conditioned air along the bottom surface of the seat in all circumferential directions of the passengers seated in the passenger seat; The railway vehicle is characterized in that the air outlet is provided with a passenger air outlet formed so as to blow the conditioned air from the seat surface and / or the backrest surface of the passenger seat toward the seated passenger.

2. A railway vehicle equipped with an air conditioning system having an air outlet around the lower part of a car body for blowing conditioned air into a passenger compartment, and an exhaust outlet around the upper part of the car body for exhausting air from the passenger compartment to the outside of the passenger compartment, wherein the conditioned air blown out from the air outlet into the passenger compartment rises from the lower part to the upper part of the passenger compartment and is exhausted from the exhaust outlet, the air outlet is provided with a second passenger seat air outlet formed in a passenger seat installed in the passenger compartment and formed to blow the conditioned air along the bottom surface of the seat in the front-to-rear direction of the passenger seated in the passenger seat; The railway vehicle is characterized in that the air outlet is provided with a passenger air outlet formed so as to blow the conditioned air from the seat surface and / or the backrest surface of the passenger seat toward the seated passenger.

3. A railway vehicle equipped with an air conditioning system having an air outlet around the lower part of a car body for blowing conditioned air into a passenger compartment, and an exhaust outlet around the upper part of the car body for exhausting air from the passenger compartment to the outside of the passenger compartment, wherein the conditioned air blown out from the air outlet into the passenger compartment rises from the lower part to the upper part of the passenger compartment and is exhausted from the exhaust outlet, the air outlet is provided with a third passenger seat air outlet formed in a passenger seat installed in the passenger compartment and formed to blow out the conditioned air along the bottom surface of the seat in the direction of passengers seated in other passenger seats adjacent to the passenger seat across a central aisle; The railway vehicle is characterized in that the air outlet is provided with a passenger air outlet formed so as to blow the conditioned air from the seat surface and / or the backrest surface of the passenger seat toward the seated passenger.

4. A railway vehicle equipped with an air conditioning system having an air outlet around the lower part of a car body for blowing conditioned air into a passenger compartment, and an exhaust outlet around the upper part of the car body for exhausting air from the passenger compartment to the outside of the passenger compartment, wherein the conditioned air blown out from the air outlet into the passenger compartment rises from the lower part to the upper part of the passenger compartment and is exhausted from the exhaust outlet, the air outlet is provided with a fourth passenger seat air outlet formed in a passenger seat installed in the passenger compartment and formed to blow the conditioned air along the bottom surface of the seat of the passenger seat toward an inner wall adjacent to the passenger seat; The railway vehicle is characterized in that the air outlet is provided with a passenger air outlet formed so as to blow the conditioned air from the seat surface and / or the backrest surface of the passenger seat toward the seated passenger.

5. The railway vehicle according to any one of claims 1 to 4, The railway vehicle is characterized in that the air outlet includes a backrest air outlet that blows the conditioned air rearward from the backrest of the passenger seat.

6. A railway vehicle according to any one of claims 1 to 4, The air conditioning system is configured to be able to adjust the volume of the conditioned air blown out from the passenger outlet.

7. The railway vehicle according to any one of claims 1 to 6, A railway vehicle characterized in that a smooth guide surface is formed on the outer edge side of the bottom surface of the seat, which guides the flow of conditioned air blown out from the passenger seat outlet in an upward direction.

8. The railway vehicle according to any one of claims 1 to 7, A railway vehicle characterized in that an auxiliary air outlet for blowing the conditioned air upward is formed at the upper end and / or back of the backrest of the passenger seat.

9. The railway vehicle according to any one of claims 1 to 8, The air conditioning system includes an air conditioning unit installed under the underframe and forming the conditioned air, a main supply duct and a main return duct that are arranged under the floor of the passenger compartment and connected to the air conditioning unit, and a plurality of air conditioning ducts that are connected to the main supply duct and extend to the air outlet, and the air inside the passenger compartment that is discharged outside the passenger compartment from the exhaust outlet passes through a gap between the inner wall and outer wall of the passenger compartment, returns to the main return duct, and is returned to the air conditioning unit from the main return duct.

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