JP7653887B2 - Infection control devices - Google Patents

Description

The present invention relates to an infection suppression device.

In recent years, the spread of viruses and bacteria between passengers on vehicles such as bullet trains has become a problem. In response to this, there has been an air barrier type infection suppression device in which an air barrier formation unit is attached to each of the left and right ends of multiple seats (see Patent Document 1). This air barrier formation unit has an intake port that draws in air from the rear in the front-to-rear direction, an air purification mechanism that purifies the air drawn in from the intake port to produce purified air, and an outlet port that blows the purified air forward in the front-to-rear direction, and is capable of blowing out the purified air in layers perpendicular to the left-to-right direction from the outlet port. In this infection suppression device, an air barrier is formed between adjacent seats on the left and right sides by the purified air blown out in layers perpendicular to the left-to-right direction from the outlet port of each air barrier formation unit, thereby making it possible to suppress infection between passengers.

Patent No. 6669845

However, in conventional infection suppression devices, in vehicles equipped with air conditioning equipment that supplies air from above and exhausts it under the floor, air currents are likely to be created in which the air supplied from above is diverted around the seats and exhausted under the floor. When an air current is created that divertes around the seats, it becomes easy for a circulating air current to occur between the multiple adjacent seats on the left and right that the air current avoids, which raises the risk of reducing the infection suppression effect between passengers.

The present invention aims to provide an infection suppression device that can improve the infection suppression effect.

In order to achieve the above object, the present invention provides an air conditioner that is installed in a vehicle that includes a plurality of seats aligned in the front-to-rear and left-to-right directions, and an air conditioning system that supplies air from above in the vertical direction and exhausts it under the floor, the air conditioner having an air intake, an air purification mechanism that purifies the air taken in from the air intake to produce purified air, and an air outlet that blows out the purified air forward in the front-to-rear direction, the air outlet comprising an air barrier forming unit that is capable of blowing out the purified air in layers extending in the vertical direction, the air barrier forming unit being attached to each of the plurality of seats. In both cases, the air outlet blows out the layered clean air from the left and right side ends of the seat toward the back of the backrest of the seat in front, and the air barrier forming unit is integrally formed with an air intake arrangement portion located at the upper end of the backrest in the vertical direction and having the air intake provided therein, and a pair of air outlet arrangement portions located at the left and right side ends of the backrest, respectively, and having the air outlet provided therein, and is configured to be attached to the upper part of the backrest so as to surround the top surface and the left and right side surfaces of the backrest .

In order to achieve the above object, the present invention provides an air conditioner that is installed in a facility or vehicle that includes a plurality of seats aligned in the front-to-rear and left-to-right directions, and an air conditioning system that supplies air from above in the vertical direction and exhausts it under the floor, the air conditioner having an air intake, an air purification mechanism that purifies the air taken in from the air intake to produce purified air, and an air outlet that blows out the purified air forward in the front-to-rear direction, the air barrier forming unit being capable of blowing out the purified air in a layer extending in the vertical direction, the air barrier forming unit being attached to each of the plurality of seats, The air outlet blows out the layered clean air from at least one side end of the seat in the left-right direction toward the back of the backrest of the seat in front, and the air barrier forming unit is integrally formed with an air intake arrangement portion located at the upper end of the backrest in the up-down direction and having the air intake provided therein, and a pair of air outlet arrangement portions located at the left and right side ends of the backrest, respectively, and having the air outlet provided therein, and is configured to be attached to the upper part of the backrest so as to surround the top surface and the left and right side surfaces of the backrest .

The present invention provides an infection suppression device that can improve the infection suppression effect.

1A and 1B are a schematic front view and a schematic plan view showing an infection suppression device for one embodiment of the present invention and a Shinkansen vehicle equipped with the same. FIG. 1A and 1B are a top view and a front view, respectively, showing an air barrier forming unit. FIG. 2A is a schematic top view showing the internal structure of an air barrier forming unit, and FIG. 2B is a schematic front view showing the internal structure of the air barrier forming unit. FIG. 4 is a plan view showing the blowing out of clean air in the air barrier forming unit. 1 is a side view showing the blowing out of clean air in the air barrier forming unit and the airflow around the seat that is generated as a result. FIG. 1 is a schematic front view showing airflow throughout the vehicle cabin caused by clean air being blown out from the air barrier forming unit. FIG. FIG. 13 is a front view showing a modified example of the air barrier forming unit.

[Embodiment]
Hereinafter, an infection suppression device according to one embodiment of the present invention will be described with reference to the attached drawings. This infection suppression device is a device mounted on a vehicle equipped with multiple seats on which multiple passengers sit, and is a device for suppressing infection between multiple passengers, and is an air barrier type infection suppression device that forms an air barrier to suppress infection. In particular, this infection suppression device is a vehicle equipped with an air conditioning system that supplies air from above and exhausts it under the floor, and improves the infection suppression effect by devising the blowing destination of the air barrier forming unit. Note that in this embodiment, a case where the vehicle is a bullet train is illustrated as an example, but the vehicle equipped with the infection suppression device is not limited to the bullet train, and can also be applied to other long-distance trains such as express trains, buses, airplanes, etc. In addition, as will be described in detail later, this infection suppression device can not only decompose and inactivate bacteria and viruses, but also suppress odors and remove particulate matter (PM), so it can be particularly preferably used in vehicles where a large number of passengers are forced to spend a long time in a closed space. Before describing the infection suppression device, a bullet train vehicle equipped with the infection suppression device will be described.

(Shinkansen train configuration)
As shown in Fig. 1, a Shinkansen car 1 includes a plurality of seats 11 aligned in the left-right and front-rear directions, and an air conditioning system 12 that conditions the air inside the car 1. Specifically, as shown in Fig. 1(b), the plurality of seats 11 are aligned in three rows on the right and two rows on the left, separated by an aisle.

As shown in FIG. 2, each seat 11 has a seat surface 21, a backrest 22 extending upward from the rear end of the seat surface 21, armrests 23, 23 provided on both sides of the seat surface 21, and a headrest 24 provided on the upper part of the backrest 22. The backrest 22 is tilted backward, and the back surface of the backrest 22 slopes downward from the rear to the front. Each seat 11 may also have a reclining function that allows the angle of inclination of the backrest 22 relative to the seat surface 21 to be adjusted. The left-right, front-back, and up-down directions of the seat 11 correspond to the front-back, left-right, and up-down directions of the vehicle 1, and the backrest 22 side of the seat 11 is the rear, and the opposite side is the front. The direction of the armrest 23 side of the seat 11 is the left-right direction.

As shown in FIG. 1, the air conditioning equipment 12 includes a supply port 31 that supplies air to the interior 1a from above in the vertical direction of the vehicle 1, a plurality of exhaust ports 32 that exhaust the air in the interior 1a to the underfloor of the vehicle 1, and an air conditioning device 33 that is arranged under the floor of the vehicle 1 and processes the air to be supplied to the interior 1a. The plurality of exhaust ports 32 correspond to the plurality of seats 11 and are arranged at the feet of each seat 11. The air exhausted to the underfloor from each exhaust port 32 at the feet of each seat 11 reaches the air conditioning device 33 via an air conditioning duct 34 under the floor, where it is ventilated and temperature adjusted, and then supplied to the interior 1a from the supply port 31 above the vehicle 1 via the air conditioning duct 34 under the floor and in the side wall. In other words, the air conditioning equipment 12 has a configuration in which air is supplied from above the vehicle 1 and exhausted to the underfloor.

(Configuration of infection suppression device)
As shown in FIG. 1, the infection suppression device 40 has a plurality of air barrier forming units 41 attached to the upper part of the backrests 22 of a plurality of seats 11 aligned in the left-right and front-back directions.

As shown in FIG. 3, each air barrier forming unit 41 is located at the top end of the backrest 22 in the vertical direction and integrally comprises an air intake port arrangement section 51 in which an air intake port 61 is provided, and a pair of left and right air outlet arrangement sections 52 in which air outlets 81 are formed and located at the left and right side ends of the backrest 22. In other words, the air barrier forming unit 41 is attached to the upper part of the backrest 22 of the seat 11 so as to surround the top surface and both side surfaces of the backrest 22.

As shown in FIG. 4, the air intake arrangement section 51 has a case 60 forming an outer shell, an air intake 61 arranged behind the case 60, an internal flow path 62 formed within the case 60 and communicating with the air intake 61, an air purification mechanism 63 arranged on the air intake 61 and the internal flow path 62 to purify the air taken in from the air intake 61 to produce purified air, and two fans 64 arranged on the internal flow path 62 to draw in (inhale) and exhaust (blow out) air.

The air intake 61 is located at the rear of the case 60 and in the center in the left-right direction, and is a rectangular (rectangular) opening that is long in the left-right direction. The air intake 61 opens toward the rear of the seat 11, and draws in air above the rear seat 11 at the upper end of the backrest 22.

The internal flow path 62 of the intake port arrangement section 51 has two branch flow paths 62a that branch off to the left and right from the part that communicates with the intake port 61, and each branch flow path 62a communicates with each of the air outlet arrangement sections 52.

The air purification mechanism 63 decomposes and inactivates bacteria and viruses in the air introduced from the air intake 61, suppresses odors, and removes particulate matter. The air purification mechanism 63 has a prefilter 71 disposed on the air intake 61, a photocatalyst-loaded filter 72 disposed behind the prefilter 71, and a light source 73 disposed between the prefilter 71 and the photocatalyst-loaded filter 72.

The pre-filter 71 is a collection filter that collects dust above the air intake 61.

The photocatalyst-loaded filter 72 is loaded with a photocatalyst that exhibits photocatalytic function when irradiated with ultraviolet light from the light source 73, and collects dust.

The light source 73 irradiates the photocatalyst-loaded filter 72 with ultraviolet light. In this embodiment, a deep ultraviolet LED (Light Emitting Diode) is used to irradiate the photocatalyst-loaded filter 72 with deep ultraviolet light (e.g., ultraviolet light with a wavelength of 250 nm or more and 280 nm or less).

By using the air purification mechanism 63 configured as described above, it is possible not only to decompose and inactivate bacteria and viruses, but also to suppress odors by removing odor-causing substances and to remove particulate matter, thereby improving passenger comfort. This air purification mechanism 63 can also decompose _NOx (nitrogen oxides) and the like, and can also remove fine particles such as PM2.5.

Each fan 64 is a small DC fan arranged in each branch flow path 62a, and draws in air from the intake port 61 and blows out clean air from the outlet 81. The speed of the clean air blown out from each outlet 81 can be controlled by the drive amount of each fan 64 and the opening area of each outlet 81. As will be described in detail later, the speed of the clean air blown out from the outlet 81 is controlled so that the speed of the clean air facing the passengers is 0.3 m/sec or less.

Each air outlet arrangement section 52 includes a case 80 that forms the outer shell, an air outlet 81 that is arranged at the lower front of the case 80, and an internal flow path 82 that is formed within the case 80 and communicates with the air outlet 81.

The internal flow paths 82 of each air outlet arrangement section 52 are connected at the base side to the branch flow paths 62a of the air inlet arrangement section 51, and at the tip side to the air outlet 81. The air taken in from the air inlet 61 is purified into purified air by the air purification mechanism 63, and then passes through the branch flow paths 62a of the air inlet arrangement section 51 and the internal flow paths 82 of each air outlet arrangement section 52 to reach each air outlet 81 of each air outlet arrangement section 52, and is blown out forward from each air outlet 81.

The air outlet 81 is disposed at the lower front of the case 80, and includes a slit-shaped slit opening 91 extending in the vertical direction, and a fin 92 disposed on the slit opening 91 to change the blowing direction of the clean air inward in the left-right direction. In the air outlet 81, the slit opening 91 extending in the vertical direction blows out a layer of clean air extending in the vertical direction. On the other hand, in the air outlet 81, as shown in FIG. 5, the blowing direction of the above-mentioned layer of clean air is changed to the inner side in the left-right direction by the fin 92, and the blowing destination of the layer of clean air is the back of the backrest 22 of the front seat 11 (in FIG. 5, the air barrier forming unit 41 of the front seat 11 is omitted for ease of explanation). That is, the air outlet 81 blows out the layer of clean air from the side end of the backrest 22 of the seat 11 toward the back of the backrest 22 of the front seat 11. Specifically, the air outlet 81 blows out a layer of clean air toward the center in the left-right direction of the back of the backrest 22. The layer of clean air blown out from the air outlet 81 forms an air barrier that separates the inside from the outside. This air barrier prevents air from the adjacent seat 11 from entering the seat 11 on which the air barrier forming unit 41 is attached. The vertical position of the air outlet 81 is set to match the position of the face of a typical passenger seated in the seat 11.

In FIG. 5, the laminar clean air currents blown out from the left and right air outlets 81 are blown inward at an angle relative to the center line O of the seat 11 when viewed from above, and are blown at an angle of less than 90 degrees toward the backrest 22 of the seat 11 in front. The angle of inclination of the laminar clean air currents relative to the center line O of the seat 11 is preferably 10 degrees or more and 60 degrees or less, and more preferably 30 degrees or more and 45 degrees or less.

The left and right clean air streams may be configured to collide with each other. The imaginary collision point P of the clean air stream may be in front of the back of the backrest 22 of the front seat 11. In this case, the distance from the seat 11 to the imaginary collision point P is shorter than the distance between the seat 11 and the seat 11 in front, and an air barrier having a substantially triangular shape is formed when viewed from above. The imaginary collision point P of the clean air stream may also be configured to exceed the back of the backrest 22 of the front seat 11. In this case, the distance from the seat 11 to the imaginary collision point P is longer than the distance between the seat 11 and the seat 11 in front, and an air barrier having a substantially trapezoidal shape is formed when viewed from above.
In addition, in this embodiment, the clean air is configured to be blown out toward the backrest 22 of the seat 11 in front, but the blowing direction of the clean air is not limited to the above. For example, when the air barrier forming unit 41 is attached to the seat 11 in the front row, the clean air may be blown out toward the front wall to form an air barrier around the passenger's face. The distance from the seat 11 to the virtual collision point P may be made shorter than the distance between the seat 11 and the front wall to form an air barrier that is approximately triangular when viewed from above. Also, the distance from the seat 11 to the virtual collision point P may be made longer than the distance between the seat 11 and the seat 11 in front to form an air barrier that is approximately trapezoidal when viewed from above.
In addition, by configuring the distance from a seat 11 to the virtual collision point P to be shorter than half the distance between opposing seats 11, it is possible to expect the effect of suppressing infection between passengers even when multiple front and rear seats 11 are rotated to form box seats and passengers are seated facing each other.

As shown in FIG. 6, the layered clean air blown out from the air outlet 81 toward the back of the backrest 22 in front hits the back of the backrest 22. Because the back of the backrest 22 is inclined downward from the rear to the front, most of the clean air that hits the back of the backrest 22 flows downward along the back of the backrest. As a result, an airflow flows from above to below on the seats 11. As shown in FIG. 7, an airflow flows from above to below on the seats 11, and as a whole, an airflow is generated in the vehicle 1 in which the air supplied from the supply port 31 passes over each seat 11 and is exhausted under the floor from each exhaust port 32 at the feet of each seat 11. In this way, the air outlet 81 blows out layered clean air toward the back of the backrest 22 of the front seat 11, thereby cleaning the airflow above the seats 11 and in the interior 1a of the vehicle 1.

The wind speed of the layered clean air blown out from the air outlet 81 is controlled (adjusted) so that the wind speed of the layered clean air facing the passenger seated in the seat 11 is 0.3 m/sec or less. A wind speed of 0.3 m/sec or less is equivalent to the wind speed of the airflow generated by steam when sweating, and is a wind speed that does not cause discomfort such as fatigue, cold, or noise. In other words, the air barrier forming unit 41 is configured to blow out layered clean air from the air outlet 81 so that the wind speed of the layered clean air facing the passenger is a wind speed (0.3 m/sec or less) that does not cause discomfort to the passenger. When the wind speed of the clean air is 0.3 m/sec or less, passengers seated next to each other can talk without feeling uncomfortable, while infection is suppressed by the formation of an air barrier.

According to the Beaufort wind force scale, if the wind speed is 0.15 m/sec or less, the face will not feel wind. According to ISO 7730, if the wind speed exceeds 0.15 m/sec, there is a risk of feeling cold. Therefore, if only passenger discomfort is considered, it is more preferable that the wind speed of the layered clean air blown out from the air outlet 81 be controlled so that the wind speed of the layered clean air facing the passenger seated in the seat 11 is 0.15 m/sec or less.

Also, if the wind speed is 0.15 m/sec or more, sufficient spatial isolation performance can be obtained in the air barrier formed by the layered clean air. Therefore, considering the spatial isolation performance of the air barrier formed by the layered clean air, it is preferable that the wind speed of the layered clean air blown out from the air outlet 81 is controlled so that the wind speed of the layered clean air facing the passenger seated in the seat 11 is 0.15 m/sec or more. In other words, if considering not only the discomfort of the passengers but also the spatial isolation performance of the air barrier formed by the layered clean air, it is more preferable that the wind speed of the layered clean air blown out from the air outlet 81 is controlled so that the wind speed of the layered clean air facing the passenger seated in the seat 11 is 0.15 m/sec or more and 0.3 m/sec or less.

More specifically, it is preferable to control the wind speed of the layered clean air blown out from the air outlet 81 so that the wind speed throughout the air barrier formed by the layered clean air is 0.15 m/sec or more and 0.3 m/sec or less, and the wind speed around the passenger's face inside the air barrier is 0.15 m/sec or less.

(Functions and Effects of the Embodiments)
As described above, according to the configuration of the above embodiment, the air outlet 81 blows out layered clean air toward the back of the backrest 22 of the front seat 11, thereby generating an air current flowing from above to below above the seat 11, and in a vehicle 1 equipped with an air conditioning system 12 that supplies air from above and exhausts it below the floor, it is possible to generate an air current passing above each seat 11. This makes it possible to suppress air circulation between adjacent seats 11, thereby improving the infection suppression effect.

In addition, according to the configuration of the above embodiment, the air outlet 81 is configured to blow out layered clean air inward, so compared to a configuration in which layered clean air is blown out parallel to the front-to-rear direction, the clean air can be brought closer to the passengers, and the air near the passengers can be ventilated. This makes it possible to further purify the air near the passengers.

In addition, according to the configuration of the above embodiment, the air intake 61 is disposed at the upper end of the backrest 22, so that the air that hits the backrest 22 and flows upward can be collected. This makes it possible to prevent the air above the seat 11 from flying upward in the room 1a and moving to other seats 11.

In addition, according to the configuration of the above embodiment, the air barrier forming unit 41 is configured to integrally have an air intake arrangement section 51 located at the upper end of the backrest 22 and an air outlet arrangement section 52 located at the side end of the backrest 22. Therefore, compared to a configuration in which a unit located at the side end of the backrest 22 alone takes in air, purifies the air, and blows out purified air, it is possible to arrange built-in mechanisms such as the air purification mechanism 63 and fan 64 without difficulty, and it is also possible to add built-in mechanisms to improve the sterilization and deodorization functions and add aroma functions, etc.

In addition, according to the configuration of the above embodiment, the exhaust port 32 of the vehicle 1 is disposed at the feet of each seat 11, making it easier for the air barrier forming unit 41 to generate an airflow that passes over the seats 11.

In addition, according to the configuration of the above embodiment, by setting the wind speed of the layered clean air facing the passengers at 0.3 m/sec or less, discomfort (coldness, fatigue, noisiness) caused by the wind of clean air blown out from the air outlet 81 can be suppressed. Furthermore, passengers seated next to each other can talk to each other without feeling uncomfortable.

(Modification)
Although the embodiments of the present invention have been described above, the invention according to the claims is not limited to the above-described embodiments. It should be noted that not all of the combinations of features described in the embodiments are essential to the means for solving the problems of the invention.

For example, as shown in FIG. 8, in the air barrier forming unit 41, a movable part 101 may be provided between the intake port arrangement part 51 and each outlet arrangement part 52 or on each outlet arrangement part 52, so that the position of the outlet 81 can be adjusted in the vertical direction. In such a case, the movable part 101 has a configuration that allows the vertical position of each outlet 81 to be changed while maintaining a communication state from the intake port 61 to each outlet 81, and this is realized, for example, by a bellows structure or a nested structure. With this configuration, even if the passenger is a child, the vertical position of each outlet 81 can be aligned with the position of the child's face, improving the infection suppression effect.

In addition, in the above embodiment, the air barrier forming unit 41 is configured to blow out clean air only near the headrest 24, but it is of course possible to form the air barrier forming unit 41 (its air outlet 81) in a vertically elongated shape that extends below the seat 11 (near the seat surface 21), thereby widening the area in which the air barrier is formed.

In addition, in the above embodiment, two air outlet arrangements 52 are provided on the left and right sides, and clean air is blown out from both left and right side ends of the seat 11. However, it is also possible to provide only one air outlet arrangement 52, and to blow clean air out from only one of the left and right side ends of the seat 11. That is, in the above embodiment, the air barrier forming unit 41 has a pair of air outlet arrangements 52 located at each side end in the left and right direction of the backrest 22 of the seat 11, and the two air outlets 81 of the pair of air outlet arrangements 52 blow out layered clean air from both left and right side ends of the backrest 22 toward the back of the backrest 22 of the front seat 11. However, the air barrier forming unit 41 may have only one of the pair of air outlet arrangements 52, and the air outlet 81 of the air outlet arrangement 52 may blow out layered clean air from one of the left and right side ends of the backrest 22 toward the back of the backrest 22 of the front seat 11. Even in such a case, by forming an air barrier on one side in the left and right direction in each seat 11, the space of each seat 11 can be isolated, and an infection suppression effect can be obtained.

In addition, in the above embodiment, the air barrier forming unit 41 is attached to the backrest 22 of the seat 11, but the present invention is not limited to this as long as the air barrier forming unit 41 is attached to the seat 11. For example, the air barrier forming unit 41 may be attached to the seat surface 21 of the seat 11.

In addition, in the above embodiment, the infection suppression device 40 is configured to be mounted on a vehicle (shinkansen) equipped with multiple seats 11 and air conditioning equipment 12, but the infection suppression device 40 may also be configured to be mounted on a facility equipped with multiple seats 11 and air conditioning equipment 12 (e.g., a movie theater, stadium, theater, etc.).

(Summary of the embodiment)
Next, the technical ideas understood from the above-described embodiments will be described by using the reference numerals and the like in the embodiments. However, the reference numerals and the like in the following description do not limit the components in the claims to the members and the like specifically shown in the embodiments.

[1] An infection suppression device (40) that is mounted on a vehicle that has a plurality of seats (11) aligned in the front-to-rear and left-to-right directions, and an air conditioning unit (12) that supplies air from above in the vertical direction and exhausts it under the floor, and that has an air intake (61), an air purification mechanism (63) that purifies the air taken in from the air intake (61) to produce purified air, and an air outlet (81) that blows out the purified air forward in the front-to-rear direction, the air outlet (81) being equipped with an air barrier forming unit (41) that is capable of blowing out the purified air in layers extending in the vertical direction, the air barrier forming unit (41) being attached to each of the plurality of seats (11), and the air outlet (81) blows out the layered purified air from the left-to-right side ends of the seats (11) toward the back of a seat backrest (22) of the front seat (11).
This allows an airflow to be generated above each seat (11) in a vehicle equipped with an air conditioning system (22) that supplies air from above and exhausts it under the floor, thereby improving the infection suppression effect.
[2] The air barrier forming unit (41) blows out the layered clean air from the air outlet (81) so that the wind speed of the layered clean air facing a passenger seated in the seat (11) is 0.3 m/sec or less. The infection suppression device (40) described in [1].
This makes it possible to suppress discomfort (coldness, fatigue, and noise) caused by the wind of clean air blown out from the air outlet (81).
[3] The infection suppression device (40) described in [1] or [2], wherein the air barrier forming unit (41) is integrally formed with an air intake arrangement portion (51) located at the upper end portion of the backrest (22) in the vertical direction and having the air intake (61) provided therein, and a pair of air outlet arrangement portions (52) located at the side ends of the backrest (22) in the left and right direction, respectively, and having the air outlet (81) provided therein.
This allows built-in mechanisms such as an air purification mechanism (63) and a fan (64) to be arranged without difficulty, and also allows the addition of built-in mechanisms to improve the sterilization and deodorization functions, add an aroma function, etc.
[4] An infection suppression device (40) described in any one of [1] to [3], wherein the air barrier forming unit (41) is configured to be able to adjust the position of the air outlet (81) in the vertical direction.
As a result, even if the passenger is a child, the vertical position of each air outlet (81) can be aligned with the position of the child's face, thereby improving the infection suppression effect.
[5] An infection suppression device (40) described in any one of [1] to [4], wherein the vehicle is a Shinkansen.
This will help prevent infection between passengers on the Shinkansen.
[6] An infection suppression device (40) that is installed in a facility or vehicle that has a plurality of seats (11) aligned in the front-to-back and left-to-right directions, and an air conditioning unit (12) that supplies air from above in the vertical direction and exhausts it under the floor, and that has an air intake (61), an air purification mechanism (63) that purifies the air taken in from the air intake (61) to produce purified air, and an air outlet (81) that blows out the purified air forward in the front-to-back direction, and the air outlet (81) is equipped with an air barrier forming unit (41) that is capable of blowing out the purified air in layers extending in the vertical direction, the air barrier forming unit (41) being attached to each of the plurality of seats (11), and the air outlet (81) blows out the layered purified air from at least one side end of the seats (11) in the left-to-right direction toward the back of a seat backrest (22) of the front seat (11).
This makes it possible to generate airflow passing over each seat (11) in a facility or vehicle equipped with an air conditioning system (22) that supplies air from above and exhausts it under the floor, thereby improving the infection suppression effect.

11: Seat, 12: Air conditioning equipment, 22: Seat back, 40: Infection suppression device, 41: Air barrier formation unit, 51: Air intake arrangement, 52: Air outlet arrangement, 61: Air intake, 63: Air purification mechanism 63, 81: Air outlet

Claims (5)

The vehicle is equipped with a plurality of seats aligned in the front-rear and left-right directions, and an air conditioning system that supplies air from above in the vertical direction and exhausts it under the floor,
an air barrier forming unit having an air intake port, an air purification mechanism that purifies the air taken in through the air intake port to produce purified air, and an air outlet that blows out the purified air forward in the front-to-rear direction, the air outlet being capable of blowing out the purified air in a layer extending in the up-down direction;
The air barrier forming unit is
The seat is attached to each of the plurality of seats,
The air outlet blows out the layered clean air from the side ends in the left and right direction of the seat toward a back surface of a backrest of the seat in the front,
The air barrier forming unit is
an air intake arrangement portion located at an upper end portion of the backrest in the up-down direction and having the air intake provided therein;
a pair of air outlet arrangement portions each located at a side end portion in the left and right direction of the backrest and provided with the air outlet;
The seat back is configured to be attached to the upper portion of the backrest so as to surround the upper surface and the left and right side surfaces of the backrest.
Infection control devices. The air barrier forming unit blows out the laminar clean air from the air outlet so that the wind speed of the laminar clean air facing the passenger seated in the seat is 0.3 m/sec or less.
The infection control device according to claim 1 . The air barrier forming unit is configured to be able to adjust the position of the air outlet in the up-down direction.
The infection suppression device according to claim 1 or 2 . The vehicle is a Shinkansen.
An infection suppression device according to any one of claims 1 to 3 . The air conditioning system is installed in a facility or vehicle equipped with a plurality of seats aligned in the front-rear and left-right directions, and an air conditioning system that supplies air from above in the vertical direction and exhausts it under the floor,
an air barrier forming unit having an air intake port, an air purification mechanism that purifies the air taken in through the air intake port to produce purified air, and an air outlet that blows out the purified air forward in the front-to-rear direction, the air outlet being capable of blowing out the purified air in a layer extending in the up-down direction;
The air barrier forming unit is
The seat is attached to each of the plurality of seats,
The air outlet blows out the layered clean air from at least one side end of the seat in the left-right direction toward a back surface of a backrest of the seat in the front,
The air barrier forming unit is
an air intake arrangement portion located at an upper end portion of the backrest in the up-down direction and having the air intake provided therein;
a pair of air outlet arrangement portions each located at a side end portion in the left and right direction of the backrest and provided with the air outlet;
The seat back is configured to be attached to the upper portion of the backrest so as to surround the upper surface and the left and right side surfaces of the backrest.
Infection control devices.

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