Aroma generating device

Abstract

To provide an aroma generator which can be miniaturized.SOLUTION: The aroma generating device 1 includes a plurality of aroma cartridge 3A filled with mutually different aroma components, an empty cartridge 3B not filled with the aroma components, and an air duct 4 which is individually communicated and connected to the plurality of aroma cartridge 3A and the empty cartridge 3B and through which air sent out from them is commonly passed. The aroma generation device 1 has an air delivery part 5 driven and controlled so as to deliver air from a selected cartridge selected from a plurality of aroma cartridge 3A and empty cartridge 3B to the ventilation flue 4. When the selection of the selected cartridge is the switching from the aroma cartridge 3A to another aroma cartridge 3A, the air delivery part 5 is driven and controlled so as to deliver the air from the empty cartridge 3B to the ventilation flue 4 before the switching and release the air remaining in the ventilation flue 4 to the outside.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a fragrance emitting device, and more particularly to a fragrance emitting device that emits a fragrance to the outside. [Background technology]

[0002] Patent Document 1 discloses a fragrance emitting device that emits a fragrance to the outside. This fragrance emitting device has a plurality of fragrance cartridges filled with fragrance components and an air delivery unit that delivers air containing each fragrance component from each fragrance cartridge. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-58427 Summary of the Invention [Problem to be solved by the invention]

[0004] In the configuration described in Patent Document 1, the air sent from each scent cartridge is discharged to the outside through separate tubes connected to each cartridge, which leads to an increase in the size of the device. Therefore, the present invention provides a scent emitting device that can be made smaller. [Means for solving the problem]

[0005] To solve the above problems, the fragrance emitting device of the present invention employs the following means.

[0006] In other words, the first invention of the present invention is a fragrance generating device that releases fragrance to the outside, comprising: a plurality of fragrance cartridges filled with different fragrance components; an empty cartridge that is not filled with any fragrance components; an air passage that is individually connected to the plurality of fragrance cartridges and the empty cartridges and through which air sent out from them passes in common; and an air sending unit that sends air into the ventilation passage from a selected cartridge selected from the plurality of fragrance cartridges and the empty cartridges, and when the selection of the selected cartridge involves switching from one fragrance cartridge to another fragrance cartridge, is driven and controlled to send air from the empty cartridge into the ventilation passage before switching and release the air remaining in the ventilation passage to the outside.

[0007] According to the first aspect of the invention, even if the ventilation duct is shared, by releasing odorless air from the empty cartridge before releasing another fragrance from the ventilation duct, it is possible to prevent the fragrance remaining in the ventilation duct from mixing with the other fragrance being released. This allows for appropriate rationalization of the ventilation duct and the miniaturization of the fragrance emitting device.

[0008] The second invention of the present invention is a fragrance generating device according to the first invention, wherein the ventilation passage has a connection port that is individually connected to the plurality of fragrance cartridges and the empty cartridge and joins with them, and a ventilation tube that is connected to the downstream end of the connection port, and the fragrance generating device further has an opening / closing valve body that opens and closes the air passage at the upstream end of the tube.

[0009] According to the second aspect of the present invention, the on-off valve body is provided at the upstream end of the tube, so that the scents volatilizing from the multiple scent cartridges can be prevented from mixing within the tube when the valve is closed.

[0010] The third invention of the present invention is a fragrance generating device according to the first or second invention, wherein the air delivery section has a plurality of air delivery units that are individually driven and controlled for the plurality of fragrance cartridges and the empty cartridge.

[0011] According to the third aspect of the present invention, the release of scent from each selected scent cartridge and the release of air from the empty cartridge before switching can be carried out quickly and appropriately without requiring large movements.

[0012] A fourth aspect of the present invention is the aroma generating device according to the third aspect, wherein the air-delivery section is controlled so that two or more of the plurality of air-delivery units are driven simultaneously.

[0013] According to the fourth invention, by simultaneously releasing scents from two or more scent cartridges, it is possible to release a blend of scents. Also, by releasing scents from one or more scent cartridges and also releasing air from an empty cartridge, it is possible to release a diluted scent.

[0014] The fifth invention of the present invention is a fragrance generating device according to the first invention, wherein the ventilation passage is selectively connected to only one selected from the plurality of fragrance cartridges and the empty cartridge, and the fragrance generating device further comprises a cartridge switching unit that operates to selectively switch the communication connection between the plurality of fragrance cartridges and the empty cartridge and the ventilation passage.

[0015] According to the fifth aspect of the present invention, the cartridge switching section allows the release of aroma from a plurality of aroma cartridges and the release of air from an empty cartridge without providing a plurality of air delivery sections and ventilation passages.

[0016] The sixth invention of the present invention is a fragrance generating device according to the first or fifth invention, wherein the ventilation passage has a ventilation tube extending from the device main body, and the tube is arranged so that it passes through the inside of the seat and from the seat back or from the headrest through a headrest stay attached to the seat back, exposing an open end, which serves as a fragrance release port, to the outside.

[0017] According to the sixth aspect of the present invention, since the ventilation passage is shared, only the tube extending from the scent emitting device can be arranged inside the seat so that it is exposed from the seat back or headrest, thereby enabling the scent to be emitted close to the face (nose) of the user (seat occupant) without the device body being exposed from the seat. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a perspective view of a fragrance emitting device according to a first embodiment. [Figure 2] FIG. 2 is an exploded perspective view of the fragrance emitting device with the cover removed. [Figure 3] FIG. 1 is a schematic diagram of a fragrance generating device. [Figure 4] FIG. 1 is a perspective view showing a state in which the fragrance emitting device is applied to a seat. [Figure 5] FIG. 10 is a perspective view showing another state in which the scent emitting device is applied to a seat. [Figure 6] FIG. 4 is a schematic diagram of a fragrance emitting device according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0020] First Embodiment (Schematic configuration of fragrance generating device 1) First, the configuration of the fragrance emitting device 1 according to the first embodiment of the present invention will be described with reference to Figures 1 to 5. In the following description, when no specific reference figure is shown or when no reference figure has a corresponding reference symbol, reference will be made to any of Figures 1 to 5 as appropriate.

[0021] The fragrance emitting device 1 according to this embodiment includes a device main body 2 filled with fragrance components, and a tube 4B that sends air containing the fragrance components released from the device main body 2 to the outside. As shown in Fig. 2, the device main body 2 includes a cylindrical body case 2A with a bottom, and a plate-shaped lid 2B that fits over the top of the body case 2A.

[0022] The aroma emitting device 1 has five aroma cartridges 3A and one empty cartridge 3B that are loaded into the cylindrical main body case 2A. The aroma cartridges 3A and empty cartridge 3B are shaped like triangular prisms and are loaded inside the cylindrical main body case 2A so as to be lined up in the circumferential direction of the cylinder.

[0023] Each aroma cartridge 3A is filled with a different aroma component. The empty cartridge 3B is empty and has no aroma component inside. The aroma emitting device 1 also has an air passage 4 that is connected to each aroma cartridge 3A and the empty cartridge 3B so as to communicate with each other individually, and through which the air discharged from these cartridges passes in common.

[0024] The ventilation passage 4 has connection ports 4A that are individually connected to each of the aroma cartridges 3A and the empty cartridge 3B, and a ventilation tube 4B that is connected to the downstream end of the connection port 4A. As shown in Figure 3, the connection port 4A is formed by a truncated cone-shaped recess formed in the center of the back of the lid 2B.

[0025] Specifically, when the lid 2B is attached to the main body case 2A, the connection port 4A is set to communicate with the opening A1 formed on the top plate of each aroma cartridge 3A and the opening B1 formed on the top plate of the empty cartridge 3B. The tube 4B is connected from the downstream side to a through-hole formed in the center of the lid 2B that communicates with the connection port 4A via an on-off valve body 6, which will be described later.

[0026] As shown in Figure 2, the fragrance emitting device 1 further includes an air delivery unit 5 that delivers air from each fragrance cartridge 3A and empty cartridge 3B to the ventilation passage 4. The air delivery unit 5 is composed of six pumps 5A that are individually connected to each fragrance cartridge 3A and empty cartridge 3B.

[0027] Each pump 5A is disposed on the bottom surface of a corresponding aroma cartridge 3A or empty cartridge 3B that is loaded into the cylinder of the main body case 2A. Here, each pump 5A corresponds to the "air delivery unit" of the present invention.

[0028] The air delivery unit 5 is electrically connected to a control device such as an ECU (not shown) mounted on the device main body 2 or the vehicle. The control device (not shown) controls the driving of the air delivery unit 5 based on an operation signal input in response to an external operation by a user.

[0029] Specifically, the control device (not shown) selects and controls the pump 5A to be driven based on an external operation performed by the user using an operation means such as an operation panel, thereby sending air from the corresponding scent cartridge 3A or empty cartridge 3B into the ventilation passage 4.

[0030] As shown in Figure 3, the fragrance emitting device 1 further includes an on-off valve 6 that can open and close the intermediate path of the ventilation passage 4. The on-off valve 6 is made up of a solenoid valve that is controlled to open and close by the control device (not shown) described above. The on-off valve 6 is controlled to open in conjunction with the driving of any of the pumps 5A that make up the air delivery section 5 by the control device (not shown).

[0031] Furthermore, the on-off valve body 6 is controlled to close when all of the pumps 5A constituting the air delivery unit 5 are stopped. This prevents the aroma volatilized from each aroma cartridge 3A from being released to the outside through the ventilation passage 4 when the air delivery unit 5 is stopped.

[0032] 2 and 3, the on-off valve element 6 is provided in the front center of the lid 2B so as to be connected from the front side to a through-hole that communicates with the connection port 4A. The upstream end of the tube 4B is inserted from the downstream side into the on-off valve element 6 provided in this manner and connected to it.

[0033] 3, the on-off valve element 6 is provided at a position corresponding to the upstream end of the tube 4B, rather than midway through the tube 4B. By providing the on-off valve element 6 at such a position, it is possible to prevent the scents volatilizing from the multiple scent cartridges 3A from mixing within the tube 4B when the valve is closed.

[0034] Specifically, the connection port 4A formed in the center of the back of the lid 2B is individually connected to each of the scent cartridges 3A and the empty cartridge 3B, and the air passages converge within the truncated cone-shaped recess, allowing the scents volatilizing from the multiple scent cartridges 3A to mix within the recess of this connection port 4A.

[0035] However, by providing the on-off valve 6 between the connection port 4A and the tube 4B, the space in which the volatilized scents can mix can be kept small within the narrow connection port 4A. When the on-off valve 6 is opened by the control device (not shown) and air is sent from a selected cartridge selected from the scent cartridges 3A and empty cartridges 3B by the air delivery unit 5 to the connection port 4A, this air passes through the tube 4B and is released to the outside.

[0036] As shown in Figure 4, the fragrance emitting device 1 according to this embodiment is installed in a seat 10 mounted in an automobile as follows. That is, the fragrance emitting device 1 has its device body 2 installed below a seat cushion 12 that forms the seating portion of the seat 10. Note that the fragrance emitting device 1 may also be installed in a location other than below the seat cushion 12. Details will be explained in other embodiments below.

[0037] The scent emitting device 1 has a tube 4B extending from its device main body 2, passing through the inside of the seat back 11 that forms the backrest of the seat 10, and leading to the headrest 13 that serves as the headrest. More specifically, the tube 4B is passed through one of a pair of cylindrical headrest stays 13A on the left and right that hang down from the headrest 13, and then through the inside of the headrest 13. Each headrest stay 13A functions as a fixed support that is inserted into the seat back 11 from above in the figure and attached to it.

[0038] The tube 4B is bifurcated into two parts at a point where it is passed through the headrest 13. Each of the bifurcated pipes of the tube 4B is provided so that the open ends that serve as fragrance release ports are exposed facing forward from the left and right sides of the headrest 13.

[0039] With this arrangement, the scent emitting device 1 is configured so that the device main body 2 is not exposed to the outside from the seat 10, yet can emit scent from both the left and right sides via the tube 4B to a position close to the face (nose) of the occupant of the seat 10. As shown in Fig. 5, the tube 4B may be configured to branch into two ducts inside the seat back 11, with each duct being passed through each headrest stay 13A and then into the headrest 13. Furthermore, the bifurcated ducts of the tube 4B may be provided so as to be exposed forward from the left and right sides of the seat back 11, rather than from the headrest 13.

[0040] (Drive control of fragrance generating device 1) As shown in Figure 3, the fragrance emitting device 1 is driven and controlled by the above-mentioned control device (not shown) as follows: When the user selects a desired fragrance through external operation and activates the fragrance emitting device 1, the corresponding pump 5A is activated, causing the selected fragrance cartridge 3A (selected cartridge) to pump air containing fragrance components into the tube 4B.

[0041] Furthermore, if the user selects a different scent through an external operation after the release of the scent component, the pump 5A is stopped and then the pump 5A corresponding to the selected scent cartridge 3A (selected cartridge) is switched to the other pump 5A.

[0042] At this time, before the pump 5A corresponding to the selected other scent is driven, the pump 5A corresponding to the empty cartridge 3B is driven to send odorless air containing no scent components into the tube 4B, thereby releasing the scent component-containing air remaining in the tube 4B to the outside.

[0043] After the empty air is released, the pump 5A corresponding to the selected other scent is driven, and air containing scent components is sent from the other scent cartridge 3A into the tube 4B, thereby preventing the scent released earlier and the other scent released later from mixing in the tube 4B.

[0044] In other words, when a user externally operates the fragrance emitting device 1 to switch from a selected fragrance to another fragrance, the fragrance emitting device 1 sends out air that does not contain fragrance components from the empty cartridge 3B before switching and releases the air remaining in the tube 4B to the outside. This drive control ensures that air without any fragrance is always released from the tube 4B.

[0045] The length of time for which empty air is released from the empty cartridge 3B does not necessarily have to be long enough for the previously released air containing aroma components to completely escape from the tube 4B. In other words, even if the previously released air containing aroma components remains in the tube 4B, the release of empty air from the empty cartridge 3B gradually pushes the air containing aroma components remaining in the tube 4B to the outside.

[0046] Therefore, even if air containing a previously released fragrance component remains in tube 4B, the release of empty air from empty cartridge 3B prevents air containing a different fragrance component that is released subsequently from mixing with the air containing the previous fragrance component.When the fragrance emitting device 1 is stopped by an external operation by the user and then started again by selecting a fragrance that the user wants to use, and if the selected fragrance is different from the fragrance selected before stopping, the drive control is performed in the same way as above to send out empty air from empty cartridge 3B and release the air remaining in tube 4B to the outside.

[0047] The external operation by the user of the fragrance emitting device 1 may be to select a fragrance, change the output level, or switch to an empty cartridge 3B that does not emit fragrance.

[0048] (Other drive controls of the fragrance generating device 1) The fragrance emitting device 1 may be configured such that only one pump 5A is selectively driven as described above, or multiple pumps 5A may be driven simultaneously to mix and release air containing multiple fragrance components or odorless air. For example, by simultaneously releasing air containing fragrance components from two or more fragrance cartridges 3A, it is possible to release a mixed fragrance. Furthermore, by releasing air containing fragrance components from one or more fragrance cartridges 3A and also releasing air from an empty cartridge 3B, it is possible to release a diluted fragrance.

[0049] In this case, the scent concentration and air volume can be adjusted by changing the output ratio of the multiple pumps 5A being driven. Even when the scent distribution device 1 mixes and releases scent components by driving multiple pumps 5A as described above, when an operation to switch from a selected scent to another scent is performed, air not containing scent components is sent out from the empty cartridge 3B and the air remaining in the tube 4B is released to the outside before the switch.

[0050] If the user's external operation is simply to adjust the scent concentration, it is not necessary to control the discharge of empty air from only the empty cartridge 3B and the release of the air remaining in the tube 4B to the outside, since different scents will not be mixed.

[0051] To summarize the above, the fragrance emitting device 1 according to this embodiment has the following configuration: Note that the reference numerals in parentheses below correspond to the respective components shown in the above embodiment.

[0052] That is, the fragrance generating device (1) that releases fragrance to the outside has a plurality of fragrance cartridges (3A) filled with different fragrance components, an empty cartridge (3B) that is not filled with any fragrance component, and an air passage (4) that is individually connected to the plurality of fragrance cartridges (3A) and the empty cartridges (3B) and through which air discharged from these cartridges passes in common. The fragrance generating device (1) also has an air discharge unit (5) that is driven and controlled to discharge air from a selected cartridge selected from the plurality of fragrance cartridges (3A) and the empty cartridges (3B) into the air passage (4).

[0053] When the selection of the selected cartridge is to switch from the scent cartridge (3A) to another scent cartridge (3A), the air delivery unit (5) is controlled and driven to deliver air from the empty cartridge (3B) to the ventilation duct (4) before switching and to discharge the air remaining in the ventilation duct (4) to the outside. According to the above configuration, even if the ventilation duct (4) is shared, odorless air is discharged from the empty cartridge (3B) before a different scent is discharged from the ventilation duct (4), thereby preventing the scent remaining in the ventilation duct (4) from mixing with the scent being discharged. This allows the ventilation duct (4) to be appropriately streamlined, and the scent generating device (1) to be made more compact.

[0054] The ventilation passage (4) has connection ports (4A) that are individually connected to the multiple aroma cartridges (3A) and empty cartridges (3B) and join together, and a ventilation tube (4B) that is connected to the downstream end of the connection port (4A). The aroma distribution device (1) further has an on-off valve (6) that opens and closes the air passage at the upstream end of the tube (4B). By providing the on-off valve (6) at the upstream end of the tube (4B) in this manner, it is possible to prevent aromas volatilizing from the multiple aroma cartridges (3A) from mixing within the tube (4B) when the valve is closed.

[0055] The air-delivery section (5) has a plurality of air-delivery units (5A) that are individually controlled and driven for the plurality of scent cartridges (3A) and the empty cartridge (3B). According to the above configuration, the scent from each selected scent cartridge (3A) and the air from the empty cartridge (3B) before switching can be released quickly and appropriately without requiring large movements.

[0056] Furthermore, when the air-delivery section (5) is controlled so that two or more of the plurality of air-delivery units (5A) are simultaneously driven, the following effects can be obtained. That is, by simultaneously emitting scents from two or more scent cartridges (3A), the scents can be mixed and emitted. Furthermore, by emitting scents from one or more scent cartridges (3A) and also emitting air from an empty cartridge (3B), the scent can be diluted and emitted.

[0057] The ventilation passage (4) also has a ventilation tube (4B) extending from the device body (2). The tube (4B) is arranged so that its open end, which serves as a fragrance release port, is exposed to the outside through the seat back (11) or through a headrest stay (13A) attached to the seat back (11) from the headrest (13). With the above configuration, the ventilation passage (4) is shared, so that only the tube (4B) can be extended from the fragrance emitting device (1) and arranged inside the seat (10) so as to be exposed from the seat back (11) or the headrest (13). Therefore, the fragrance can be released close to the face (nose) of the user (seat occupant) without the device body (2) being exposed from the seat (10).

[0058] Second Embodiment Next, the configuration of a fragrance emitting device 1 according to a second embodiment of the present invention will be described with reference to Fig. 6. In this embodiment, the ventilation passage 4 is selectively connected to only one selected from a plurality of fragrance cartridges 3A and an empty cartridge 3B.

[0059] Specifically, the connection port 4C formed on the lid 2B of the device body 2 is selectively connected to only one selected cartridge. The aroma emitting device 1 further includes a cartridge switching unit 7 that selectively switches between the connection port 4C and the plurality of aroma cartridges 3A and the empty cartridge 3B.

[0060] Specifically, the cartridge switching unit 7 is configured with a turntable that is connected to the inside of the main body case 2A of the device main body 2 so as to be rotatable about the cylindrical axis. A plurality of scent cartridges 3A and empty cartridges 3B are set on the turntable that configures this cartridge switching unit 7. The cartridge switching unit 7 is driven and controlled by a control device (not shown) that drives and controls the air delivery unit 5.

[0061] Specifically, when the user selects the desired scent through external operation and starts the scent emitting device 1, the cartridge switching unit 7 rotates the turntable so that the selected scent cartridge 3A is connected in communication with the connection port 4C. Here, in this embodiment, the air delivery unit 5 is composed of only one pump 5B.

[0062] The one pump 5B is rotated to a position where the selected aroma cartridge 3A is connected in communication with the connection port 4C, and is thereby positioned to be connected in communication with the aroma cartridge 3A. After the cartridge switching unit 7 connects the selected aroma cartridge 3A in communication with the connection port 4C and the pump 5B, the aroma emitting device 1 drives the pump 5B.

[0063] When an external operation by the user switches the selected scent to another scent, the scent emitting device 1 switches the empty cartridge 3B to communicate with the connection port 4C and the pump 5B using the cartridge switching unit 7 before the switch. Then, the pump 5B is driven to release empty air from the empty cartridge 3B, and the air containing the scent components remaining in the tube 4B is released to the outside. After that, the cartridge switching unit 7 is operated again to switch the selected other scent cartridge 3A to communicate with the connection port 4C and the pump 5B.

[0064] In this way, by providing the cartridge switching unit 7, it is possible to release scent from multiple scent cartridges 3A and release air from empty cartridges 3B without providing multiple air delivery units 5 and ventilation channels 4. Since the configuration other than the above is the same as the configuration of the scent emitting device 1 according to the first embodiment, the same reference numerals are used and the description thereof will be omitted.

[0065] Other Embodiments Although the present invention has been described above using two embodiments, the present invention can be embodied in various forms other than the above embodiments.

[0066] 1. The fragrance emitting device of the present invention may be configured so that the ventilation tube is passed through the interior material of a vehicle such as an automobile, rather than through the interior of the seat, with the open end serving as the fragrance release port exposed to the interior of the vehicle. The tube does not necessarily have to be bifurcated. The fragrance emitting device may be installed in a location other than the bottom of the seat cushion, such as in the seatback or console. Furthermore, if the fragrance emitting device is small, it may be installed in the headrest.

[0067] 2. The fragrance emitting device may not have an on-off valve. The on-off valve may be a solenoid valve or may be a valve that opens when it receives wind pressure from the air delivery unit and closes when the air delivery unit is stopped.

[0068] 3. The air delivery unit constituting the air delivery section may be composed of a blower instead of a pump.

[0069] 4. The fragrance emitting device may have a connection switching unit, instead of a cartridge switching unit, that moves the air delivery unit and the connection port to selectively connect and communicate with one of a plurality of fragrance cartridges and an empty cartridge. The selected cartridge may be switched by external operation by the user each time, or automatically. [Explanation of symbols]

[0070] 1. Fragrance generator 2. Device body 2A main body case 2B Lid 3A Fragrance Cartridge A1 opening 3B Empty Cartridge B1 opening 4 Ventilation duct 4A connection port 4B tube 4C connection port 5 Air delivery section 5A Pump (Air Delivery Unit) 5B Pump 6 Opening and closing valve body 7 Cartridge switching section 10 sheets 11 Seat back 12 seat cushions 13 Headrest 13A Headrest stay

Claims

1. A fragrance generating device that releases a fragrance to the outside, A plurality of scent cartridges filled with different scent components; an empty cartridge that is not filled with a fragrance component; an air passage that is individually connected to the plurality of scent cartridges and the empty cartridge and through which air sent out from these cartridges passes in common; The fragrance generating device has an air delivery unit that delivers air to the ventilation passage from a selected cartridge selected from the plurality of fragrance cartridges and the empty cartridges, and that is driven and controlled to deliver air from the empty cartridge to the ventilation passage before switching when the selection of the selected cartridge involves switching from the fragrance cartridge to another fragrance cartridge, and to release the air remaining in the ventilation passage to the outside.

2. The fragrance generating device according to claim 1, The ventilation passage has connection ports that are individually connected to the plurality of scent cartridges and the empty cartridge and join together, and a ventilation tube that is connected to a downstream end of the connection port, The fragrance emitting device further includes an opening / closing valve body that opens and closes the air passage at the upstream end of the tube.

3. The fragrance generating device according to claim 1 or 2, The air delivery section has a plurality of air delivery units that are individually controlled to drive the plurality of scent cartridges and the empty cartridges.

4. The fragrance generating device according to claim 3, The air delivery section is controlled so that two or more of the plurality of air delivery units are simultaneously driven.

5. The fragrance generating device according to claim 1, the ventilation passage is selectively connected to only one selected from the plurality of scent cartridges and the empty cartridge; The fragrance generating device further includes a cartridge switching unit that operates to selectively switch communication between the plurality of fragrance cartridges and the empty cartridge and the ventilation passage.

6. The fragrance generating device according to claim 1 or claim 5, the ventilation passage has a ventilation tube extending from the device body, The aroma generating device is arranged so that the tube passes through the inside of the seat and exposes the open end serving as an aroma release port from the seat back or from the headrest through a headrest stay attached to the seat back to the outside.

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