Drug diffuser

Abstract

To provide a medicine volatilizer which can volatilize a medicine moderately by causing air to suitably pass in a housing.SOLUTION: A medicine volatilizer is installed near an air outlet. The medicine volatilizer comprises: a container which accommodates a medicine, and has a hole through which the medicine exudes; and a first case which holds the container so as to cover the container from an outer side. The first case has a first front face part and a first back face part, a first air introduction port is formed in the first back face part, and a first air exhaust port is formed in the first front face part. The first introduction port and the first exhaust port are so located as to overlap in a front view so that air blown out from the outlet passes through the interior of the first case from rear to front while volatilizing the medicine leaked from the hole.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to a drug diffuser.

Background Art

[0002] Patent Document 1 discloses a drug diffuser that is attached by a clip or the like to a louver at the air outlet of an air conditioner mounted in an automobile and is used. The drug diffuser of Patent Document 1 sucks air blown out from the air outlet through an inlet formed on the back surface of the housing of the drug diffuser, and discharges it through an outlet formed on the side surface of the housing, thereby diffusing the drug in the housing into the vehicle interior.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, with the above configuration of Patent Document 1, air does not flow properly in the housing of the drug diffuser, and sometimes the drug cannot be evenly distributed in the vehicle interior.

[0005] An object of the present invention is to provide a drug diffuser that can appropriately diffuse a drug by allowing air to pass properly through the housing.

Means for Solving the Problems

[0006] The drug diffuser according to the first aspect of the present invention is a drug diffuser installed near an air outlet, comprising a container that houses a drug and has holes through which the drug exudes, and a first case that holds the container so as to cover it from the outside. The first case has a first front portion, a first back portion, and a first side portion that connects the first front portion and the first back portion in the front-rear direction. A first inlet for the air is formed in the first back portion, and a first outlet for the air is formed in the first front portion. The first inlet and the first outlet are arranged so as to overlap in a front view such that the air blown out from the outlet passes through the inside of the first case from the rear to the front while volatilizing the drug leaked from the holes.

[0007] The drug diffuser according to the second aspect of the present invention is the drug diffuser according to the first aspect, wherein the first inlet includes a plurality of communication ports. The first outlet includes a plurality of communication ports that respectively overlap the plurality of communication ports of the first inlet in a front view.

[0008] The drug diffuser according to the third aspect of the present invention is the drug diffuser according to the first aspect or the second aspect, further comprising a second case that has a second front portion and a second back portion, holds the first case so as to cover it from the outside, and is configured to be rotatable relative to the first case around a rotation axis extending in the front-rear direction. By rotating the second case around the rotation axis relative to the first case, the second case can be switched between a closed position where the first inlet and the first outlet are closed and an open position where the first inlet and the first outlet are opened. The second back portion and the second front portion close the first inlet and the first outlet, respectively, when the second case is in the closed position, and open the first inlet and the first outlet, respectively, when the second case is in the open position.

[0009] The drug diffuser according to the fourth aspect of the present invention is the drug diffuser according to the third aspect, wherein a second air inlet is formed in the second back surface portion, and a second air outlet is formed in the second front surface portion. The second air inlet and the second air outlet overlap the first air inlet and the first air outlet, respectively, in a front view when the second case is in the open position, and do not overlap the first air inlet and the first air outlet, respectively, in a front view when the second case is in the closed position.

[0010] The drug diffuser according to the fifth aspect of the present invention is the drug diffuser according to any one of the first to fourth aspects, further comprising a fixture that extends rearward from the first back surface portion and fixes the first case near the air outlet.

[0011] The drug diffuser according to the sixth aspect of the present invention is the drug diffuser according to any one of the first to fifth aspects, wherein the container has an opening on the back side, and includes a container body that houses the drug, and a back sheet that is attached to the container body so as to close the opening. The hole is formed by piercing the back sheet. [Effect of the Invention]

[0012] According to the present invention, a first air inlet for air is formed in the first back surface portion of the housing (first case) of the drug diffuser, and a first air outlet for air is formed in the first front surface portion. The first air inlet and the first air outlet are arranged so as to overlap in a front view such that the air blown out from the air outlet passes through the inside of the first case from the rear to the front while volatilizing the drug. Thereby, air can be appropriately passed through the first case, and the drug can be moderately volatilized. [Brief Description of the Drawings]

[0013]

Figure 1

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Figure 4A

Figure 4B

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Figure 11

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Figure 14

Figure 15

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Figure 17A

Figure 17B

Figure 18A

Figure 18B

Mode for Carrying Out the Invention

[0014] Hereinafter, a drug diffuser according to an embodiment of the present invention will be described with reference to the drawings.

[0015] <1. Overall Structure of the Chemical Agent Diffuser> FIG. 1 shows a perspective view of the chemical agent diffuser 1 according to the present embodiment as viewed from the front side, FIG. 2 shows a perspective view of the chemical agent diffuser 1 as viewed from the back side, and FIG. 3 shows a side view of the chemical agent diffuser 1. In the description here, as shown in FIGS. 1 to 3, the front-rear direction is defined, the front side means the front side, and the rear side means the back side. The chemical agent diffuser 1 according to the present embodiment is for use in an automobile, volatilizes a chemical agent inside the vehicle, and provides various effects of the chemical agent to the space inside the vehicle. The chemical agent diffuser 1 is installed near the air outlet of the in-vehicle air conditioner, and in particular, is attached to the louver arranged at the air outlet of the air conditioner. Thereby, the chemical agent diffuser 1 can efficiently spread the chemical agent to the space inside the vehicle by riding on the air flow blown out from the air outlet.

[0016] The chemical agent diffuser 1 includes a container 10 for storing a chemical agent, an inner case 20 that holds the container 10 so as to cover it from the outside, an outer case 30 that holds the inner case 20 so as to cover it from the outside, and a fixture 40 that fixes the above units 10, 20, and 30 near the air outlet of the air conditioner. Although details will be described later, ventilation holes 23 and 24 are formed in the inner case 20, and the chemical agent diffuses into the vehicle interior when the air sent from the air conditioner passes through these ventilation holes 23 and 24.

[0017] The outer case 30 is configured to be rotatable relative to the inner case 20 around a rotation axis A1 extending in the front-rear direction, and by this rotation, the ventilation holes 23 and 24 of the inner case 20 are opened and closed. For example, when getting into the vehicle, the user sets the outer case 30 to an open position where the ventilation holes 23 and 24 of the inner case 20 are opened, and uses the chemical agent diffuser 1. On the other hand, when getting out of the vehicle, etc., the outer case 30 is set to a closed position where the ventilation holes 23 and 24 of the inner case 20 are closed, and the use of the chemical agent diffuser 1 is stopped. In this way, by closing the ventilation holes 23 and 24 of the inner case 20 when not in use, wasteful consumption of the chemical agent can be prevented. Hereinafter, details of each unit 10, 20, 30, and 40 constituting the chemical agent diffuser 1 will be described.

[0018] <2. Structure of Each Part> <2-1. Container> FIG. 4A shows a front view of the container 10, and FIG. 4B shows a side view thereof. The container 10 has a container body 11 and a rear sheet 12 attached to the container body 11. The container body 11 has a cup portion 111 having an opening 11a on the rear side, and an annular flange portion 112 continuous with an end portion on the rear side of the cup portion 111. The flange portion 112 extends in the circumferential direction on the outer side in the radial direction of the cup portion 111 with respect to a central axis (coinciding with the rotation axis A1) extending in the front-rear direction of the cup portion 111. The rear sheet 12 is adhered to the flange portion 112 so as to close the opening 11a. This adhesion can be performed, for example, by heat welding or adhesion with an adhesive. The cup portion 111 has a top surface portion 115, a cylindrical outer peripheral portion 116 extending from the outer peripheral edge of the top surface portion 115 to the rear side, and a pedestal portion 114 continuous with an end portion on the rear side of the outer peripheral portion 116. The pedestal portion 114 has a shape that includes the outer peripheral portion 116 therein in a front view. The pedestal portion 114 has a cylindrical portion rising from the inner peripheral edge of the flange portion 112 and a planar portion extending between the front end of the cylindrical portion and the rear end of the outer peripheral portion 116. Although not limited thereto, the top surface portion 115 is circular in a front view, and the outer peripheral edges of the pedestal portion 114, the rear sheet 12, and the flange portion 112 are square-shaped with rounded corners in a front view. In the present embodiment, the outer peripheral edge of the rear sheet 12 and the outer peripheral edge of the flange portion 112 generally coincide in a front view.

[0019] A closed space is formed by the container body 11 and the back sheet 12, and a drug is contained in the closed space. The drug of this embodiment is in a liquid state. The type of the drug is not particularly limited, but typically it is a fragrance, a deodorant, or an insect repellent, or a mixture thereof, and additives such as a fragrance, a deodorizing component, an insect repellent component, and a coloring agent are contained according to the purpose of use. The solvent contained in the drug is appropriately selected according to the type of the additive used, and can be a hydrophilic solvent, a lipophilic solvent, or a mixture thereof. When the drug contains a fragrance, it is preferable to contain at least a lipophilic solvent as the solvent in order to enhance the fragrance intensity. As the hydrophilic solvent, for example, water or ethanol, or a mixture thereof can be used. As the lipophilic solvent, for example, glycol ether or an isoparaffin-based solvent, or a mixture thereof can be used. Further, the drug may contain a solubilizer in order to solubilize functional components such as a fragrance, a deodorizing component, an insect repellent component, and a coloring agent.

[0020] The material of the container body 11 is not particularly limited, and for example, it can be a resin such as polyethylene terephthalate or polyethylene. The back sheet 12 is a flexible sheet. The back sheet 12 is configured such that when it is pierced, holes through which the drug exudes are formed. FIG. 5 is a cross-sectional view of the back sheet 12 of the present embodiment. In this example, the back sheet 12 is composed of a laminate having a volatilization layer 121 and a breaking layer 122 disposed closer to the container body 11 side than the volatilization layer 121. The volatilization layer 121 is made of a material that can allow the drug to pass through and volatilize, and here it is made of a porous material. The volatilization layer 121 is made of a material that is less likely to break than the breaking layer 122 when a pressing force is applied to the back sheet 12 from the volatilization layer 121 side and when a tensile force that stretches this is applied to the back sheet 12. As the material of the volatilization layer 121 as described above, a porous membrane such as Teslin (trademark) or Daramic (trademark) can be preferably selected. Also, as the material of the breaking layer 122 as described above, for example, polyethylene, aluminum, or polyethylene terephthalate, or any combination thereof can be selected. A preferable example of the material of the breaking layer 122 is a thin film in which a first polyethylene layer, an aluminum layer, a second polyethylene layer, and a polyethylene terephthalate layer are laminated in this order from the container body 11 side. In the present embodiment, only the outer peripheral portion of the volatilization layer 121 and the breaking layer 122 that overlaps the flange portion 112 in a front view is joined. This joining can be performed, for example, by heat welding or adhesion with an adhesive, etc.

[0021] As shown by the dotted lines in FIGS. 4A and 4B, inside the container 10, a plate 13 is arranged along the back sheet 12. FIG. 6 is a front view of the plate 13. The plate 13 has substantially the same shape as the space surrounded by the pedestal portion 114 and is accommodated within the space. In the plate 13, through holes 131 are formed at predetermined positions, in this embodiment, near the four corners in a front view, and a through hole 132 is also formed near the center. Inside the container body 11, the medicine is filled through this through hole 132. As is clear from the above description, the plate 13 covers the back sheet 12 within the internal space of the container 10. However, in the back sheet 12, the portions corresponding to the through holes 131 and 132 (hereinafter referred to as non-covered portions) are not covered by the plate 13. The plate 13 is arranged to prevent the back sheet 12 from stretching except at the non-covered portions when a pressing force is applied to the back sheet 12 from the volatilization layer 121 side. Further, the plate 13 can prevent the back sheet 12 from deforming and the rupture layer 122 from breaking when the internal space of the container 10 becomes negative pressure due to a decrease in the environmental temperature. Furthermore, it is also possible to prevent the rupture layer 122 from breaking due to dropping or an external impact. The material of the plate 13 is not particularly limited, but for example, it is a resin such as polypropylene.

[0022] <2-2. Inner case> FIG. 7 shows an exploded perspective view of the inner case 20. As shown in the figure, the inner case 20 has a front side member 21 and a back side member 22 that are removable front and back. FIG. 8 is a perspective view of the front side member 21 viewed from the back side, and FIG. 9 is a perspective view of the back side member 22 viewed from the back side. Although not limited thereto, the inner case 20 is made of a resin such as polypropylene. In this embodiment, the front side member 21 is integrally formed as a single non-separable part, and the back side member 22 is also integrally formed as a single non-separable part.

[0023] The front-side member 21 has a first front portion 211 and a cylindrical first side portion 212 that extends rearward from the outer peripheral edge of the first front portion 211. On the other hand, the rear-side member 22 has a first rear portion 221 that is removably connected to the rear-side end of the first side portion 212. The first side portion 212 connects the first front portion 211 and the first rear portion 221 in the front-rear direction.

[0024] The first front portion 211 has a circular outer peripheral edge in a front view and an opening 211a that penetrates in the front-rear direction near the center. The opening 211a is also circular and concentric with the outer peripheral edge of the first front portion 211 in a front view. As shown in FIG. 8, a cylindrical inner wall portion 213 that stands rearward is continuous along the outer peripheral edge of the opening 221a on the first front portion 211. The entire cup portion 111 of the container 10 is inserted into the space inside the inner wall portion 213 from the rear side. In a state where the container 10 is housed in the inner case 20, since the flange portion 112 abuts against the inner wall portion 213, it is possible to prevent the volatilization of the drug from the space inside the inner wall portion 213. As shown in FIG. 8, the inner wall portion 213 is circular and generally coincides with the opening 211a in a rear view, but has four enlarged-diameter portions 213a at equal intervals in the radial direction so as to receive the four corners of the pedestal portion 114. Thus, since the inner wall portion 213 and the pedestal portion 114 inserted therein are non-circular, in a state where the cup portion 111 is inserted inside the inner wall portion 213, the container 10 cannot rotate around the rotation axis A1 with respect to the front-side member 21.

[0025] The first back surface portion 221 is a plate member with a circular outer peripheral edge, and in a front view, the outer peripheral edge substantially coincides with the first front surface portion 211. As shown in FIG. 7, on the front side surface of the first back surface portion 221, an annular protruding wall 222 stands up along the outer peripheral edge and slightly inside the outer peripheral edge. On the other hand, as shown in FIG. 8, a stepped portion 212a is formed along the circumferential direction on the inner peripheral surface of the first side surface portion 212. More specifically, the first side surface portion 212 has an annular thick portion 214 and a thinner annular thin portion 215 that is continuous with the back side of the thick portion 214, and the stepped portion 212a is formed by this difference in thickness. Then, when the protruding wall 222 fits into this stepped portion 212a, the front side member 21 and the back side member 22 are connected. An annular protrusion 218 (see FIG. 8) that protrudes radially inward along the circumferential direction is provided at the end of the back side of the thin portion 215, and an annular protrusion 223 (see FIG. 7) that protrudes radially outward along the circumferential direction is provided on the protruding wall 222. When connecting the front side member 21 and the back side member 22, due to their elastic deformation, the protrusions 218 and 223 overcome each other, and the protruding wall 222 is inserted inside the first side surface portion 212. After insertion, the protrusions 218 and 223 catch on each other, so that the connection state between the front side member 21 and the back side member 22 is maintained unless a strong external force is applied, and the two members 21 and 22 do not accidentally come off due to vibrations of the vehicle or the like.

[0026] As shown in FIG. 8, the step portion 212a is partially interrupted along the circumferential direction. And in the front-side member 21, at this interrupted position, a pair of projecting pieces 216 and 217 that stand up inward from the inner peripheral surface of the first side surface portion 212 are provided. On the other hand, as shown in FIG. 7, on the upper surface of the projecting wall 222 of the rear-side member 22, a claw portion 224 that stands up toward the front side is provided. The projecting pieces 216 and 217 function as a housing portion that defines a space into which the claw portion 224 is inserted between the two. The claw portion 224 is fitted into the space between the projecting pieces 216 and 217 from the rear side when the front-side member 21 and the rear-side member 22 are connected. The claw portion 224 and the projecting pieces 216 and 217 function as a rotation restricting portion that restricts the front-side member 21 from rotating relative to the rear-side member 22 around the rotation axis A1 by engaging with each other. When the claw portion 224 is fitted between the projecting pieces 216 and 217, it is surrounded by the projecting pieces 216 and 217 from both sides around the rotation axis A1. Therefore, the projecting pieces 216 and 217 can restrict the rotation of the claw portion 224 in the forward and reverse directions around the rotation axis A1. Thus, the above rotation restricting portion restricts the relative rotation of the front-side member 21 with respect to the rear-side member 22 in the forward and reverse directions.

[0027] As will be described later, the outer case 30 is rotatable relative to the inner case 20 in the forward and reverse directions around the rotation axis A1. During such rotation, a force around the rotation axis A1 is applied to the inner case 20, particularly the front side member 21 including the first side surface portion 212, from the outer case 30 due to friction therebetween. The above rotation restricting portion prevents the front side member 21 and the rear side member 22 included in the inner case 20 from rotating relative to each other due to such a force. The open and closed states of the vent holes 23 and 24 of the inner case 20 are formed according to the relative rotational position between the inner case 20 and the outer case 30. However, if the front side member 21 is pulled by the outer case 30 and rotates relative to the rear side member 22, the opening and closing of the vent holes 23 and 24 cannot be appropriately switched. However, here, since the relative rotation between the front side member 21 and the rear side member 22 is restricted by the above rotation restricting portion, such a situation is prevented. Further, as will be described later, the rear sheet 12 of the container 10 that is non-rotatably fixed to the front side member 21 is pierced and broken by the pressing portion 417 of the fixture 40 that is non-rotatably fixed to the rear side member 22. Thereby, holes for allowing the drug to exude from inside the container 10 are formed in the rear sheet 12. Therefore, if the front side member 21 rotates relative to the rear side member 22, the pressing portion 417 moves on the rear sheet 12, and the rear sheet 12 is torn more than necessary. Then, the drug leaks out more than necessary through the rear sheet 12. However, here, since the relative rotation between the front side member 21 and the rear side member 22 is restricted by the above rotation restricting portion, such a situation is prevented.

[0028] However, the circumferential interval between the protruding piece 216 and the protruding piece 217 is larger than the circumferential width of the claw portion 224. That is, the rotation restricting portion constituted by the protruding pieces 216 and 217 and the claw portion 224 has play around the rotation axis A1 and allows a predetermined amount of rotation of the front side member 21 with respect to the rear side member 22. This is because if the front side member 21 and the rear side member 22 are completely non-rotatable relative to each other, the force around the rotation axis A1 applied by friction from the outer case 30 to the inner case 20 will lose a place to escape. In that case, the inner case 20 will try to rotate being dragged by the rotation of the outer case 30, and further, the fixture 40 which is fixedly attached to the inner case 20 will also try to rotate in the same way. Then, the part where the fixture 40 is attached, typically the louver of the air outlet of the air conditioner, may be damaged. However, here, due to the play of the above rotation restricting portion, relative rotation between the front side member 21 and the rear side member 22 is somewhat allowed, thus preventing such a situation. Also, this play can also function as a clearance that can eliminate defects when assembling the inner case 20 and the outer case 30.

[0029] A first air inlet 23 for introducing the air blown out from the air outlet of the air conditioner into the inner case 20 is formed in the first back surface portion 221. On the other hand, a first air outlet 24 for discharging the air introduced into the inner case 20 through the first air inlet 23 to the outside is formed in the first front surface portion 211. In the present embodiment, the first air inlet 23 includes a plurality of (more specifically, three) communication ports 23a to 23c, and the first air outlet 24 also includes a plurality of (more specifically, three) communication ports 24a to 24c. The communication ports 23a to 23c are arranged side by side in the outer circumferential direction of the first back surface portion 221, and the communication ports 24a to 24c are also arranged side by side in the outer circumferential direction of the first front surface portion 211. The communication ports 23a to 23c are arranged at equal intervals around the rotation axis A1. The communication ports 24a to 24c are also arranged at equal intervals around the rotation axis A1.

[0030] In this embodiment, the communication ports 23a to 23c are arranged so as to overlap the communication ports 24a to 24c respectively in a front view. Thereby, the air blown out from the air outlet of the air conditioner can appropriately and efficiently pass through the inside of the inner case 20 from the rear to the front while moderately volatilizing the agent exuded from the holes formed in the rear seat 12. In this embodiment, the communication ports 23a to 23c and the communication ports 24a to 24c each have substantially the same shape as each other and overlap almost without deviation in a front view. Further, the above-described rotation restricting portion also has a function of aligning the communication ports 23a to 23c and the communication ports 24a to 24c so as to surely face each other in a front view when the front side member 21 and the rear side member 22 are connected.

[0031] On the front side surface (outer surface) of the first front portion 211, a sign area 25 is arranged at a position between the communication ports 23a to 23c along the circumferential direction. The sign area 25 is an area where signs such as characters and figures are marked. In the example of FIG. 7, the character "OFF" is marked. Although details will be described later, the sign in the sign area 25 is a sign indicating that the ventilation ports 23 and 24 of the inner case 20 that houses the container 10 are closed.

[0032] An opening 221a penetrating in the front-rear direction is formed near the center of the first rear portion 221. The opening 221a has a square shape concentric with the outer peripheral edge of the first rear portion 221 in a front view. Although details will be described later, the base portion 41 of the fixture 40 is inserted into the opening 221a. Protrusions 225 are formed on the front side surface of the first rear portion 221 at positions facing the central portions of the respective sides of the opening 221a. When the inner case 20 is closed so as to hold the container 10 inside, each protrusion 225 abuts against the overlapping portion of the flange portion 112 of the container 10 and the rear seat 12 and supports this from the rear side.

[0033] When the container 10 is held inside the inner case 20, the front side surface (inner surface) of the first back surface portion 221 faces the back sheet 12 of the container 10. FIG. 10 is a front view of the back side member 22. Although omitted in FIG. 7, the inner surface of the first back surface portion 221 facing the back sheet 12 has an uneven region C1 as shown in FIG. 10. In the uneven region C1, a number of fine spaces are formed for holding the liquid component of the drug exuded from the back sheet 12. In the present embodiment, a number of ribs 226 extending substantially parallel to each other are formed in the uneven region C1, and channel-shaped fine spaces are formed by the gaps between the ribs 226. When the liquid component of the drug leaking from the back sheet 12 adheres onto the first back surface portion 221, it is captured to be sucked into such fine spaces by capillary action. Therefore, even when the drug leaking from the back sheet 12 is in a situation where it is difficult to volatilize, such as when the drug diffuser 1 is not in use, the situation where the liquid component of the drug leaks out from the drug diffuser 1 and stains the surroundings is suppressed.

[0034] As shown in FIG. 10, on the front side surface (inner surface) of the first back surface portion 221, in addition to the ribs 226, a surrounding wall 227 arranged so as to surround the communication ports 23a to 23c and a surrounding wall 228 arranged so as to surround the opening 221a near the center are provided. The surrounding wall 227 serves to prevent the liquid component of the drug adhering onto the first back surface portion 221 from leaking to the outside through the communication ports 23a to 23c. On the other hand, the surrounding wall 228 serves to prevent the liquid component of the drug adhering onto the first back surface portion 221 from leaking to the outside through the gap formed between the fixture 40 inserted into the opening 221a and the first back surface portion 221.

[0035] As shown in FIG. 9, an annular protruding wall 229 extending to the back side stands on the back side surface (outer surface) of the first back surface portion 221. The protruding wall 229 is arranged so as to surround the opening 221a and has a circular shape circumscribing the four corners of the square-shaped opening 221a in a rear view. Although details will be described later, this protruding wall 229 has a function of receiving the flange portion 413 of the fixture 40 in its inner space and preventing the liquid component of the drug from leaking out through the opening 221a.

[0036] <2-3. Fixture FIG. 11 shows a perspective view of the fixture 40 as viewed from the front side, and FIG. 12 shows a side view thereof. Although not limited thereto, the fixture 40 is made of a resin such as polypropylene or polyacetal. The fixture 40 has a base portion 41 and a clip portion 42 that extends rearward from the base portion 41 and is fixed near the air outlet of the air conditioner, typically to the louver. In the present embodiment, the fixture 40 is integrally formed as a single part that cannot be separated as a whole.

[0037] The base portion 41 has a cylindrical body portion 411, a bottom portion 412 disposed so as to close the opening on the back side of the body portion 411, and a flange portion 413. The flange portion 413 extends radially outward from the outer peripheral surface of the body portion 411 along the circumferential direction. The outer peripheral edges of the body portion 411 and the bottom portion 412 are square in a front view and have a shape that generally coincides with the opening 221a of the first back surface portion 221. On the other hand, the outer peripheral edge of the flange portion 413 is circular and circumscribes the four corners of the square body portion 411 in a front view. Thereby, the body portion 411 is inserted into the opening 221a of the first back surface portion 221 from the back side, but cannot pass through due to the flange portion 413. The flange portion 413 is connected to a portion that protrudes rearward in the front-rear direction from the opening 221a in the body portion 411 when the fixture 40 is fixed to the back side member 22.

[0038] The body portion 411 has a pair of cuts 414 and 414 near the center of two sides facing each other in a front view. Between each pair of cuts 414 and 414, there is provided an elastic piece 415 in a thin plate shape extending in the front-rear direction. Each elastic piece 415 is provided with a protrusion 416 extending radially outward of the body portion 411. When inserting the body portion 411 into the opening 221a from the back side to connect the fixture 40 and the first back surface portion 221, the protrusion 416 is pushed by the outer peripheral portion 230, and the elastic piece 415 elastically deforms so as to incline inward. The outer peripheral portion 230 is a part of the first back surface portion 221, and is a portion surrounding the opening 221a in the vicinity of the opening 221a so as to define the opening 221a. Due to the elastic deformation of the elastic piece 415 as described above, the protrusion 416 passes through the opening 221a, and after passing through, the elastic piece 415 returns to its original position, and the protrusion 416 is caught by the upper surface (front side surface) of the surrounding wall 228 surrounding the opening 221a. Thereby, unless a strong external force is applied, the connection state between the fixture 40 and the first back surface portion 221 is maintained, and it is prevented that the fixture 40 unintentionally falls off from the inner case 20 due to accidental hand contact, vehicle vibration, or the like. The fixture 40 is attached to the inner case 20 so as to extend rearward from the first back surface portion 221.

[0039] At the front side end of the body portion 411, pressing portions 417 are provided near the four corners in its front view. The pressing portion 417 is a protrusion with a sharpened front side. When the inner case 20 is closed so as to hold the container 10 inside, the pressing portion 417 presses so as to break through the back sheet 12 of the container 10. Thereby, the fracture layer 122 contained in the back sheet 12 fractures. On the other hand, the volatilization layer 121 does not fracture due to its high extensibility, but since it is composed of a porous membrane, it can permeate the drug. Therefore, after pressing by the pressing portion 417, holes through which the drug exudes are formed in the back sheet 12. Then, through these holes, the drug exudes from inside the container 10 to the space on the back side of the back sheet 12. The exuded drug accumulates densely in the space formed between the back sheet 12 and the first back surface portion 221, and is carried to the outside by riding on the air flow passing through the space.

[0040] FIG. 13 is a cross-sectional view showing the structure of the connecting portion between the fixture 40 and the outer peripheral portion 230 surrounding the opening 221a in the first back surface portion 221. As shown in the figure, the outer peripheral portion 230 has a base surface 231 that faces the flange portion 413 of the base portion 41 and is disposed at an interval from the flange portion 413. The base surface 231 is a surface that extends so as to face the back side within a plane orthogonal to the front-rear direction. Further, the outer peripheral portion 230 is provided with a protruding portion 232 that protrudes toward the back side so as to contact the flange portion 413 from the base surface 231. As shown in FIG. 9, the protruding portions 232 are arranged in four portions in a portion surrounded by the protruding wall 229 on the base surface 231. In a rear view, both ends of each of the four protruding portions 232 are continuous with the protruding wall 229. On the other hand, the flange portion 413 has a base surface 418 that faces the inner peripheral surface of the protruding wall 229 included in the outer peripheral portion 230 and is disposed at an interval from the inner peripheral surface of the protruding wall 229. The base surface 418 is a side peripheral surface that extends in the thickness direction of the flange portion 413. Further, as shown in FIG. 13, the flange portion 413 is provided with a protruding portion 419 that protrudes radially outward so as to contact the inner peripheral surface of the protruding wall 229 from the base surface 418. Although the protruding portion 419 is omitted in FIGS. 11 and 12, it extends over the entire circumference in the circumferential direction of the flange portion 413.

[0041] Since the contact portion between the above-mentioned protrusion 232 and the flange portion 413 is located on a route (hereinafter referred to as a leakage route) leading from the inside of the first back surface portion 221 to the outside through the opening 221a, the leakage route can be closed. Therefore, a breakwater for the liquid component of the drug is formed by this contact portion, and leakage of the drug from the inner case 20 through the leakage route can be suppressed. Further, as shown in FIG. 9, the protrusion 232 is rib-shaped and extends longitudinally. As a result, the contact area between the protrusion 232 and the flange portion 413 is narrowed, and the effect of preventing leakage of the drug is enhanced. That is, assuming that the protrusion 232 is omitted and the entire base surface 231 is in surface contact with the flange portion 413, gaps between these contact surfaces are formed long on the leakage route along the extending direction of the leakage route. Then, due to capillary action, the liquid component contained in the drug is easily sucked out to the outside through the narrow gap between the contact surfaces. In this regard, here, since the protrusion 232 that occupies a short width along the extending direction of the leakage route from the base surface 231 only contacts the flange portion 413, such suction of the drug due to capillary action is less likely to occur.

[0042] Similarly, since the contact portion between the above-mentioned protrusion 419 and the protruding wall 229 is also located on the leakage route, the leakage route can be closed. Therefore, a breakwater for the liquid component of the drug is also formed by this contact portion, and leakage of the drug from the inner case 20 through the leakage route can be suppressed. Further, the protrusion 419 is also rib-shaped and extends longitudinally. As a result, the contact area between the protrusion 419 and the protruding wall 229 is narrowed, and the effect of preventing leakage of the drug is enhanced. That is, assuming that the protrusion 419 is omitted and the entire base surface 418 is in surface contact with the protruding wall 229, gaps between these contact surfaces are formed long on the leakage route along the extending direction of the leakage route, and the liquid component contained in the drug is easily sucked out to the outside due to capillary action. In this regard, here, since the protrusion 419 that occupies a short width along the extending direction of the leakage route from the base surface 418 only contacts the protruding wall 229, such suction of the drug due to capillary action is less likely to occur.

[0043] In addition, the base surfaces 231 and 418 from which the plurality of protrusions 232 and 419 respectively rise are arranged so as to form an angle with each other, and particularly in this embodiment, they are arranged to be substantially orthogonal to each other. That is, the contact portion between the protrusion 232 and the flange portion 413 and the contact portion between the protrusion 419 and the protruding wall 229 are arranged separately on the route before and after the leakage route bends. Thereby, the leakage of the drug from the inner case 20 is further suppressed.

[0044] The clip portion 42 has a pair of protruding pieces 421 and 422. The protruding pieces 421 and 422 face each other and extend rearward from the back surface of the base portion 41 (the back surface of the bottom surface portion 412). The protruding pieces 421 and 422 can be bent by a predetermined amount due to elastic deformation so as to be more separated from each other with reference to the root portion on the base portion 41 side. Therefore, by applying an external force to the protruding pieces 421 and 422, the interval between the protruding pieces 421 and 422 can be widened. Then, by sandwiching, typically, the louver of the air conditioner in the gap between the protruding pieces 421 and 422 thus widened, the position of the clip portion 42, and thus the entire drug diffuser 1 can be fixed.

[0045] <2-4. Outer case> FIG. 14 shows an exploded perspective view of the outer case 30. As shown in the figure, the outer case 30 has a front side member 31 and a rear side member 32 that are detachably attached to each other in the front-rear direction. FIG. 15 is a perspective view of the front side member 31 viewed from the rear side. Although not limited thereto, the outer case 30 is made of a resin such as polypropylene. In this embodiment, the front side member 31 is integrally formed as a single part and cannot be separated as a whole, and the rear side member 32 is also integrally formed as a single part and cannot be separated as a whole.

[0046] The front-side member 31 has a second front portion 311 and a cylindrical second side portion 312 that extends rearward from the outer peripheral edge of the second front portion 311. On the other hand, the rear-side member 32 has a second rear portion 321 that is removably connected to the rear-side end of the second side portion 312. The second side portion 312 connects the second front portion 311 and the second rear portion 321 in the front-rear direction.

[0047] The outer peripheral edge of the second front portion 311 is circular in a front view, and an opening 311a that penetrates in the front-rear direction is formed near the center. The opening 311a is also circular and concentric with the outer peripheral edge of the second front portion 311 in a front view. A cylindrical inner wall portion 313 that stands up toward the rear side is continuous along the outer peripheral edge of the opening 311a on the second front portion 311. The inner wall portion 313 is inserted into a gap formed between the inner wall portion 213 of the inner case 20 and the cup portion 111 of the container 10 inserted therein. As a result, the outer peripheral surface of the inner wall portion 313 of the outer case 30 faces the inner peripheral surface of the inner wall portion 213 of the inner case 20 with a space therebetween. The upper part of the cup portion 111 of the container 10 is inserted into the space inside the inner wall portion 313 from the rear side. In a state where the inner case 20 and the outer case 30 are connected, the central axes of both coincide with the rotation axis A1.

[0048] On the inner wall portion 313 of the outer case 30, a plurality of slits 314 cut from the back side are formed. The plurality of slits 314 are arranged at equal intervals around the rotation axis A1. In the present embodiment, six slits 314 are arranged at 60° intervals. On the other hand, returning to FIG. 7, on the inner wall portion 213 of the inner case 20, a thin plate-like elastic piece 250 extending along the circumferential direction is provided inside one of the four enlarged diameter portions 213a. A protrusion 251 extending radially inward is provided at the tip of the elastic piece 250. This protrusion 251 is configured to be sequentially caught and locked by the plurality of slits 314 as the outer case 30 rotates relative to the inner case 20 around the rotation axis A1. That is, in the locked state where the protrusion 251 is caught by any one of the slits 314, when a rotational force is applied to the outer case 30, a force that resists this is applied to the inner wall portion 313. However, when a rotational force greater than a certain level is applied to the outer case 30, the elastic piece 250 bends so as to warp radially outward due to elastic deformation, and the protrusion 251 drops out of the slit 314. As a result, the above-mentioned resisting force weakens, and the outer case 30 rotates. When the outer case 30 rotates and the protrusion 251 reaches the position of the next slit 314, the protrusion 251 fits into this next slit 314 again. Thereby, a locked state is formed again.

[0049] Each time the outer case 30 rotates by an angle (60° in this embodiment) corresponding to the circumferential array interval of the slits 314, the above locking state is formed. Also, each time the above locking state is formed, the closed position where the first inlet 23 and the first outlet 24 of the inner case 20 are closed and the open position where they are open appear alternately. The protrusion 251 is locked to one of the plurality of slits 314 when the outer case 30 is in the closed position and is locked to another one of the plurality of slits 314 when the outer case 30 is in the open position. Therefore, the switching between the open position and the closed position can be made easily understandable to the user. Also, since it is firmly locked, it is possible to prevent the open position and the closed position from being switched unintentionally when a force is applied due to accidental hand contact or vehicle vibration, etc. Thus, the outer case 30 can be easily and surely set to the closed position and the open position. Therefore, the user can easily control the opening amount of the vents 23 and 24 formed in the inner case 20. In this embodiment, while the outer case 30 makes one rotation relative to the inner case 20, the open positions appear multiple times, more specifically, three times each. To enable this, the slits 314 are arranged in a number equal to the sum of the number of closed positions and the number of open positions existing around the rotation axis A1.

[0050] The second back surface portion 321 is a plate member having a circular outer peripheral edge, and its outer peripheral edge substantially coincides with that of the second front surface portion 311 in a front view. As shown in FIG. 14, a plurality of protrusions 322 that project slightly radially outward are arranged at predetermined intervals along the circumferential direction on the outer peripheral edge of the second back surface portion 321. In this embodiment, these protrusions 322 are spaced 60° apart along the circumferential direction and each extends 60°. On the other hand, as shown in FIG. 15, a plurality of protrusions 317 that project slightly rearward are arranged at predetermined intervals along the circumferential direction at the rear end of the second side surface portion 312. In this embodiment, these protrusions 317 are spaced 60° apart along the circumferential direction and each extends 60°. As shown in FIG. 2, the plurality of protrusions 317 are respectively received in the circumferential gaps between the plurality of protrusions 322, and conversely, the plurality of protrusions 322 are respectively received in the circumferential gaps between the plurality of protrusions 317.

[0051] The protrusions 317 and 322 function as a rotation restricting portion that restricts the front side member 31 from rotating relative to the rear side member 32 around the rotation axis A1 by being alternately arranged along the circumferential direction. When the protrusion 317 is fitted into the gap between the protrusions 322, it is surrounded by the protrusions 322 from both sides around the rotation axis A1. Similarly, when the protrusion 322 is fitted into the gap between the protrusions 317, it is surrounded by the protrusions 317 from both sides around the rotation axis A1. Therefore, the protrusions 317 and 322 can restrict the rotation of each other in the forward and reverse directions around the rotation axis A1. In other words, the above rotation restricting portion restricts the relative rotation of the front side member 21 with respect to the rear side member 22 in the forward and reverse directions.

[0052] Although omitted in the previous figures, as shown in FIG. 16, the protrusion 317 is provided with a protrusion 318 that protrudes radially inward. On the other hand, a protrusion 323 that protrudes radially outward is provided at a portion of the outer peripheral portion of the second back surface portion 321 between the plurality of protrusions 322. When connecting the front side member 31 and the rear side member 32, due to these elastic deformations, the protrusion 318 and the protrusion 323 overcome each other, and the protrusion 318 and the protrusion 323 catch on each other. Thereby, the connection state between the front side member 31 and the rear side member 32 is maintained unless a strong external force is applied, and the members 31 and 32 do not accidentally come off due to accidental hand contact, vehicle vibration, etc.

[0053] In the second back surface portion 321, an opening 321a penetrating in the front-rear direction is formed near the center. The opening 321a has a circular shape concentric with the outer peripheral edge of the second back surface portion 321 in a front view. As shown in FIG. 2, the protruding wall 229 of the first back surface portion 221 of the inner case 20 with the flange portion 413 of the fixture 40 inserted therein is inserted into this opening 321a. As shown in FIG. 9, a plurality of protrusions 240 extending radially outward and arranged at intervals in the circumferential direction are formed on the protruding wall 229. When connecting the outer case 30 and the inner case 20, while passing the fixture 40 protruding from the first back surface portion 221 of the inner case 20 through the opening 321a, the second back surface portion 321 is brought closer to cover the back surface side of the first back surface portion 221. At this time, due to the elastic deformation of the protruding wall 229, the protrusions 240, and the second back surface portion 321, the protrusions 240 overcome the portion of the second back surface portion 321 surrounding the opening 321a, and the two are engaged with each other in the front-rear direction. As a result, unless a strong external force is applied, the second back surface portion 321 is prevented from falling off from the first back surface portion 221 to the back side, and these members 321 and 221 are not accidentally disengaged due to accidental hand contact, vehicle vibration, etc. On the other hand, the protrusions 240 do not prevent the rotation of the second back surface portion 321 around the rotation axis A1. Therefore, the second back surface portion 321 of the outer case 30 can freely rotate around the rotation axis A1 with respect to the first back surface portion 221 of the inner case 20.

[0054] The outer case 30 is formed with air vents 33 and 34. More specifically, the second back portion 321 is formed with a second inlet 33 for introducing the air blown out from the air outlet of the air conditioner into the outer case 30. On the other hand, the second front portion 311 is formed with a second outlet 34 for discharging the air introduced into the outer case 30 through the second inlet 33 to the outside. In the present embodiment, the second inlet 33 includes a plurality of (more specifically, three) communication ports 33a to 33c, and the second outlet 34 also includes a plurality of (more specifically, three) communication ports 34a to 34c. The communication ports 33a to 33c are arranged side by side in the outer peripheral direction of the second back portion 321, and the communication ports 34a to 34c are also arranged side by side in the outer peripheral direction of the second front portion 311. The communication ports 33a to 33c are arranged at equal intervals around the rotation axis A1. The communication ports 34a to 34c are also arranged at equal intervals around the rotation axis A1.

[0055] In the present embodiment, the communication ports 33a to 33c are arranged so as to overlap the communication ports 34a to 34c respectively in a front view. In the present embodiment, the communication ports 33a to 33c and the communication ports 34a to 34c each have substantially the same shape as each other and overlap almost without deviation in a front view. The rotation restricting portion of the outer case 30 described above also has a function of alignment for surely facing the communication ports 33a to 33c and the communication ports 34a to 34c respectively in a front view when the front side member 31 and the back side member 32 are connected.

[0056] When the outer case 30 is in the open position, the communication ports 33a to 33c which are the second inlets 33 overlap the communication ports 23a to 23c which are the first inlets 23 of the inner case 20 respectively in a front view. Also, at this time, the communication ports 34a to 34c which are the second outlets 34 overlap the communication ports 24a to 24c which are the first outlets 24 of the inner case 20 respectively in a front view. In the present embodiment, the communication ports 23a to 23c and 24a to 24c of the inner case 20 and the communication ports 33a to 33c and 34a to 34c of the outer case 30 each have substantially the same shape as each other and overlap almost without deviation in a front view when the outer case 30 is in the open position.

[0057] On the one hand, when the outer case 30 is in the closed position, the communication ports 33a to 33c, which are the second inlets 33, do not overlap with the communication ports 23a to 23c, which are the first inlets 23, in a front view. Also, at this time, the communication ports 34a to 34c, which are the second outlets 34, do not overlap with the communication ports 24a to 24c, which are the first outlets 24, in a front view, and respectively overlap with the sign area 25 described above. Therefore, the sign of the sign area 25 can be visually recognized from the outside of the drug diffuser 1 through the communication ports 34a to 34 that function as windows.

[0058] In other words, when the outer case 30 is in the closed position, the second back surface portion 321 of the outer case 30 covers all of the communication ports 23a to 23c, which are the first inlets 23 of the inner case 20, from the outside and closes them. Also, at this time, the second front surface portion 311 of the outer case 30 covers all of the communication ports 24a to 24c, which are the first outlets 24 of the inner case 20, from the outside and closes them. On the other hand, when the outer case 30 is in the open position, the second back surface portion 321 of the outer case 30 opens all of the communication ports 23a to 23c, which are the first inlets 23 of the inner case 20. Also, at this time, the second front surface portion 311 of the outer case 30 opens all of the communication ports 24a to 24c, which are the first outlets 24 of the inner case 20.

[0059] As described above, when the outer case 30 is in the open position, the communication ports 23a to 23c and 24a to 24c of the inner case 20 and the communication ports 33a to 33c and 34a to 34c of the outer case 30 are arranged separately on three straight lines extending in the front-rear direction and arranged at equal intervals in the circumferential direction. Thereby, the air blown out from the air outlet of the air conditioner can appropriately and efficiently pass through the inside of the inner case 20 and the outer case 30 that houses the inner case 20 from the rear to the front while volatilizing the drug exuded from the holes formed in the back seat 12. Therefore, the drug diffuser 1 can volatilize the drug moderately. On the other hand, when the outer case 30 is in the closed position, since all of the communication ports 23a to 23c and 24a to 24c of the inner case 20 are closed by the outer case 30, the drug is confined inside the inner case 20, and wasteful volatilization of the drug is prevented.

[0060] As described above, the outer case 30 can be switched between a closed position and an open position by rotating around the rotation axis A1 with respect to the inner case 20. At this time, the outer case 30 can rotate 360° around the rotation axis A1 with respect to the inner case 20. Further, the outer case 30 can rotate around the rotation axis A1 in both the forward and reverse directions with respect to the inner case 20. Therefore, even if the drug diffuser 1 is installed on either the left or right side of the user, and even if the user is either right-handed or left-handed, the user can freely rotate the outer case 30 and easily perform the operation of opening and closing the inner case 20.

[0061] <3. Modification Example> As described above, one embodiment of the present invention has been described. However, the present invention is not limited to the above embodiment, and various modifications are possible without departing from the spirit thereof. For example, the following modifications are possible. Also, the gists of the following modification examples can be combined as appropriate.

[0062] <3-1> In the above embodiment, the outer case 30 in the open position is configured to open all of the plurality of communication ports 24a to 24c of the first discharge port 24 of the inner case 20 and all of the plurality of communication ports 23a to 23c of the first introduction port 23. However, the outer case 30 in the open position may be configured to open only a part of the communication ports 24a to 24c of the first discharge port 24 of the inner case 20 and only a part of the communication ports 23a to 23c of the first introduction port 23. For example, this can be achieved by omitting a part of the communication ports 33a to 33c that are the second introduction ports 33 in the outer case 30 and omitting a part of the communication ports 34a to 34c that are the second discharge ports 34.

[0063] <3-2> In the above-described embodiment, the claw portion 224 is formed on the rear side member 22 of the inner case 20, and the housing portion into which the claw portion 224 is inserted is formed on the front side member 21. However, conversely, the claw portion may be formed on the front side member 21, and the housing portion may be formed on the rear side member 22. Further, the rotation restricting portion that restricts the rotation of the front side member 21 with respect to the rear side member 22 is not limited to the configuration including the claw portion and the housing portion as described above, and various configurations having elements that engage with each other in the rotation direction around the rotation axis A1 can be adopted. Also, the position where the rotation restricting portion that restricts the rotation of the front side member 21 with respect to the rear side member 22 is formed is not limited to the above-described one. For example, when the rear side member 22 has, in addition to the first rear surface portion 221, a side surface portion that extends forward from the outer peripheral portion of the first rear surface portion 221, the housing portion may be formed on the inner peripheral surface of this rear surface portion, and the claw portion that is fitted into this housing portion from the front side may be formed on the front side member 21.

[0064] <3-3> In the above-described embodiment, the uneven region C1 is disposed on the front side surface (inner surface) of the first rear surface portion 221, but is not limited thereto, and can be disposed at various positions on the inner surface of the inner case 20. At this time, the uneven region C1 is preferably disposed at a position where the liquid component of the drug easily flows in.

[0065] <3-4> In the above-described embodiment, a large number of ribs (convex portions) 226 extending substantially parallel to each other are formed in the uneven region C1. However, the uneven region C1 can be changed to various structures as long as a fine space suitable for holding the liquid component of the drug is formed. For example, in addition to the ribs 226 described above, a large number of ribs (convex portions) 237 intersecting (preferably orthogonal) to these ribs 226 may be further formed in the uneven region C1 (see Fig. 17A). In this case, the ribs 226 and 237 spread in a lattice pattern, and a large number of square fine spaces surrounded by the ribs 226 and 237 are formed. Further, instead of or in addition to the ribs 226, a large number of grooves (concave portions) may be formed. Similarly, instead of or in addition to the ribs 237, a large number of grooves (concave portions) may be formed. Also, instead of forming convex portions linearly as in the ribs 226 and 237, for example, as shown in Fig. 17B, the convex portions 238 may be arranged in a dot pattern. Similarly, instead of linear grooves (concave portions), the concave portions may be arranged in a dot pattern. Even in these examples, a fine space capable of holding the liquid component of the drug is formed.

[0066] <3-5> In the above-described embodiment, the clip portion 42 is provided on the fixture 40, and the drug diffuser 1 can be fixed to a louver or the like in a clip type. However, the installation method of the drug diffuser 1 is not limited to this, and for example, it may be fixed to a louver or the like by a double-sided seal or the like.

[0067] <3-6> In the above-described embodiment, the flange portion 413 of the fixture 40 is provided with a protruding portion 419 that protrudes radially outward so as to contact the protruding wall 229 of the outer peripheral portion 230. However, conversely, as shown in FIG. 18A, a protruding portion 234 that protrudes from the base surface 233 of the protruding wall 229 of the outer peripheral portion 230 so as to contact the flange portion 413 may be provided. In this case, the base surface 233 is disposed at an interval from the side peripheral surface while facing the side peripheral surface of the flange portion 413. Further, as shown in FIG. 18B, instead of the flange portion 413, a protruding portion 436 that protrudes so as to contact the surrounding wall 228 of the outer peripheral portion 230 may be provided on the body portion 411. In this case, the body portion 411 has a base surface 435 that faces the surrounding wall 228 while being disposed at an interval from the surrounding wall 228, and the protruding portion 436 protrudes from the base surface 435 toward the surrounding wall 228. The above are all examples, and protruding portions that extend from one to the other so as to contact can be provided at various positions of the outer peripheral portion 230 and the base portion 41. The protruding portion can be disposed on the body portion 411 or the flange portion 413, or can be disposed on the outer peripheral portion 230 so as to contact the body portion 411 or the flange portion 413. Any number of such protruding portions can be provided.

[0068] <3-7> In the above-described embodiment, a plurality of slits 314 are formed in the inner wall portion 313 of the outer case 30, and protrusions 251 that are sequentially locked thereto are provided on the inner wall portion 213 of the inner case 20. However, conversely, a plurality of slits may be formed on the inner case 20 side (for example, the inner wall portion 213), and protrusions that are sequentially locked to these slits may be provided on the outer case 30 side (for example, the inner wall portion 313). Alternatively, a plurality of protrusions may be formed on the inner case 20 side (for example, the inner wall portion 213), and slits that are sequentially locked to these protrusions may be provided on the outer case 30 side (for example, the inner wall portion 313). Alternatively, a plurality of protrusions may be formed on the outer case 30 side (for example, the inner wall portion 313), and slits that are sequentially locked to these protrusions may be provided on the inner case 20 side (for example, the inner wall portion 213).

[0069] Alternatively, a plurality of slits may be formed in one of the outer case 30 or the inner case 20, and a plurality of protrusions that are simultaneously locked to some or all of these slits may be provided on the other of the outer case 30 or the inner case 20. Or, a plurality of protrusions may be formed in one of the outer case 30 or the inner case 20, and a plurality of slits that are simultaneously locked to some or all of these protrusions may be provided on the other of the outer case 30 or the inner case 20. In this case, the force for locking the rotation of the outer case 30 with respect to the inner case 20 is increased. Also, when there are a plurality of protrusions, even if a part of the protrusion or the elastic piece on which it is provided is broken, the function of locking the rotation can be continuously maintained.

[0070] <3-8> In the above embodiment, the first discharge port 24 is formed only in the first front portion 211, but is not limited thereto. For example, it may be disposed on both the first front portion 211 and the first side portion 212. Instead of or in addition to this, the first inlet 23 is not formed only in the first back portion 221, and for example, may be disposed on both the first back portion 221 and the first side portion 212. Also, only one first discharge port 24 may be formed instead of a plurality, and instead of or in addition to this, only one first inlet 23 may be formed instead of a plurality. In the case of these modifications, the positions and numbers of the second discharge port 34 and the second inlet 33 are also appropriately changed according to the configurations of the first discharge port 24 and the first inlet 23.

Explanation of Reference Numerals

[0071] 1 Medicine diffuser 10 Container 11 Container body 11a Opening 12 Back sheet 20 Inner case (first case) 21 Front side member 22 Back side member 23 First inlet (ventilation port) 23a~23c Communication ports 24 First discharge port (ventilation port) 24a~24c Communication ports 211 First front portion 211a opening 212 first side surface part 221 first back surface part 226 rib (protrusion) 230 outer peripheral part 231 base surface 232 protrusion 233 base surface 234 protrusion 237 rib (protrusion) 238 protrusion 251 protrusion (lock element) 30 outer case (second case) 31 front side member 32 back side member 33 second inlet (ventilation opening) 33a~33c communication openings 34 second outlet (ventilation opening) 34a~34c communication openings 311 second front part 312 second side surface part 314 slit (lock element) 321 second back surface part 40 fixture 41 base part 42 clip part (fixing part) 411 body part 413 flange part 417 pressing part 418 base surface 419 protrusion 435 base surface 436 protrusion A1 rotation axis C1 concavo-convex region

Claims

1. A chemical diffuser installed near an air outlet, comprising: a container that houses a chemical and has holes through which the chemical exudes; a first front portion, a first rear portion, and a first side portion that connects the first front portion and the first rear portion in the front-rear direction, and a first case that holds and covers the container from the outside; and a first air inlet is formed in the first rear portion; a first air outlet is formed in the first front portion; the first air inlet and the first air outlet are arranged to overlap in a front view such that the air blown out from the air outlet passes through the inside of the first case from the rear to the front while volatilizing the chemical leaked from the holes; a space is formed between the rear surface of the container and the first rear portion; a chemical diffuser.

2. The first rear portion has a protrusion that protrudes toward the rear surface of the container, and the protrusion supports the rear surface of the container so that the space is formed. The chemical diffuser according to Claim 1.

3. The first air inlet includes a plurality of communication ports, and the first air outlet includes a plurality of communication ports that respectively overlap the plurality of communication ports of the first air inlet in a front view. The chemical diffuser according to Claim 1 or 2.

4. Further comprising a second case having a second front portion and a second rear portion, holding and covering the first case from the outside, and configured to be rotatable relative to the first case around a rotation axis extending in the front-rear direction, wherein the second case can be switched between a closed position where the first air inlet and the first air outlet are closed and an open position where the first air inlet and the first air outlet are opened by rotating around the rotation axis relative to the first case, and the second rear portion and the second front portion respectively close the first air inlet and the first air outlet when the second case is in the closed position, and open the first air inlet and the first air outlet respectively when the second case is in the open position. The chemical diffuser according to any one of Claims 1 to 3.

5. A second air inlet of the air is formed in the second rear portion, and a second air outlet of the air is formed in the second front portion, wherein the second air inlet and the second air outlet respectively overlap the first air inlet and the first air outlet in a front view when the second case is in the open position, and do not overlap the first air inlet and the first air outlet respectively in a front view when the second case is in the closed position. ​ The chemical diffuser according to claim 4.

6. A fixture that extends rearward from the first back surface portion and fixes the first case in the vicinity of the air outlet further comprising The chemical diffuser according to any one of claims 1 to 5.

7. The container has an opening on the back side, a container body that houses the chemical, and a back sheet that is attached to the container body so as to close the opening. The hole is formed by the back sheet being punctured. The chemical diffuser according to any one of claims 1 to 6.

Images