CN113874060A

CN113874060A - Steam generating device

Info

Publication number: CN113874060A
Application number: CN202080038659.XA
Authority: CN
Inventors: 土屋滋美; 吉井圭二; 冈本拓也
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2019-05-24
Filing date: 2020-01-08
Publication date: 2021-12-31
Anticipated expiration: 2040-01-08
Also published as: CN113874060B; KR102623141B1; WO2020240906A1; JP2020192310A; JP7309562B2; KR20210099069A

Abstract

A steam generator includes a mask body having a closed-end cylindrical shape with an opening at a facing-side end, and a steam generator capable of generating steam in an internal space of the mask body, wherein the mask body has a circumferential surface that narrows from the facing-side end toward a closed-side end located on the opposite side of the facing-side end, the circumferential surface of the mask body has a recessed portion recessed toward the internal space, and a pair of recessed portions are formed at opposing positions on the circumferential surface of the mask body.

Description

Steam generating device

Technical Field

The present invention relates to a steam generating appliance.

Background

Conventionally, a steam generator capable of supplying warm steam to the throat and nose has been known (japanese patent application laid-open No. 2011-188947). The steam generator disclosed in japanese patent application laid-open publication No. 2011-188947 includes: a 1 st sheet (panel) and a 2 nd sheet (2) which are combined in a bag shape having an opening at a part thereof; and a flat-plate-shaped steam generator contained in each sheet body, and is configured to form a cup shape capable of covering the mouth and nose of a user by opening the opening between the 1 st sheet body and the 2 nd sheet body. According to the steam generator disclosed in japanese patent application laid-open publication No. 2011-188947, the function of the respiratory mucosa can be improved by supplying warm steam to the throat and nose, and the effect of preventing cold, influenza, and the like can be obtained.

Disclosure of Invention

The present invention relates to a steam generator including a bottomed tubular mask body having an opening at a facing side end and a steam generator capable of generating steam in an internal space of the mask body, wherein the mask body has a circumferential surface that is narrowed from the facing side end toward a closed side end located on the opposite side of the facing side end, the circumferential surface of the mask body has a recessed portion recessed toward the internal space, and a pair of the recessed portions are formed at opposing positions of the circumferential surface of the mask body.

Drawings

Fig. 1 is a diagram showing a steam generator according to an embodiment of the present invention.

Fig. 2 is a developed view showing a developed state of the mask body of the steam generator according to the present embodiment.

Fig. 3 is a sectional view taken along line a-a' of fig. 2.

Fig. 4 is a view showing a folded state of the steam generator according to the present embodiment.

Fig. 5 is a diagram showing a state of use of the steam generator according to the present embodiment.

Fig. 6 is a cross-sectional view of the steam generator according to the present embodiment in a state in which the steam generator is deformed into a cup shape.

Fig. 7 is a schematic view showing an apparatus for measuring the amount of water vapor generated.

Fig. 8 is a view showing a state of the cup main body in which the facing side end portion is opened, as viewed from a direction facing the opening.

Fig. 9 is a view showing a mask body according to a modification.

Fig. 10 is a view showing a mask body according to another modification.

Fig. 11 is a view showing a mask body according to another modification.

Fig. 12 is a view showing a mask body according to another modification.

Detailed Description

The steam generator disclosed in japanese patent application laid-open No. 2011-188947 has room for improvement in terms of adhesion to the face of the user and gripping by hand during use.

The present invention relates to a steam generating device having excellent adhesion to the face of a user and excellent gripping performance when held by a hand during use.

Specifically, the present invention relates to a steam generator including: a bottomed cylindrical mask body having an opening at a facing side end portion; and a steam generator capable of generating steam in an internal space of the mask body, wherein the mask body has a circumferential surface that is narrowed from the attachment side end toward a closed side end located on the opposite side of the attachment side end, the circumferential surface of the mask body has a recessed portion recessed toward the internal space, and a pair of the recessed portions is formed at opposing positions of the circumferential surface of the mask body.

The steam generating device of the present invention has excellent adhesion to the face of a user and excellent gripping performance when held by a hand during use.

[ means for carrying out the invention ]

Preferred embodiments for carrying out the present invention will be described below with reference to the accompanying drawings. The following embodiments are not intended to limit the inventions according to the claims, and not all combinations of the features described in the embodiments are essential to the solution of the inventions.

[ integral constitution of steam generating device ]

As shown in fig. 1, a steam generator 1 of the present embodiment includes: a cup-shaped mask body 2 capable of covering the mouth and nose of a user; and a steam generator 3 capable of generating steam in the internal space 4 of the mask body 2.

In the present specification, the term "cup-like" refers to a tubular shape having one end open and the other end closed, i.e., a bottomed tubular shape, and the shape of the body portion is not limited to a cylindrical shape, and includes, for example, a square tubular shape. In the present specification, an end portion of the mask body 2 formed in a cup shape on the open side is referred to as a "close-side end portion 5", and an end portion of the mask body on the closed side opposite to the close-side end portion 5 is referred to as a "closed-side end portion 6". In the present specification, the upper edge portion in a state of the mask body 2 in which the "facing side end portion 5" and the "blocking side end portion 6" are arranged in the left-right direction (i.e., the state of fig. 4) as viewed in the planar direction is referred to as an "upper side edge portion 7", and the lower edge portion in this state is referred to as a "lower side edge portion 8". Here, the "upper side edge portion 7" is an edge portion located on the nose side when the mask body 2, which is held in a cup shape, covers the mouth and nose of the user, and the "lower side edge portion 8" is an edge portion located on the mouth side (jaw side) in this state. However, since the mask body 2 of the present embodiment is vertically symmetrical about a horizontal center line 13a described later, it can be worn upside down, that is, it can be worn by the user with the lower side edge 8 positioned on the nose side and the upper side edge 7 positioned on the mouth side (jaw side).

[ Structure of mask body ]

As shown in fig. 1, the mask body 2 includes a 1 st sheet body 10A forming a half peripheral surface of the mask body 2 and a 2 nd sheet body 10B forming the remaining half peripheral surface. Fig. 2 is a plan view of the mask body 2 in a state where the inner surface is opened upward when the mask body is formed into a cup shape, and fig. 3 is a sectional view taken along line a-a' of fig. 2. As shown in fig. 2, the 1 st sheet body portion 10A and the 2 nd sheet body portion 10B are integrally continuous at the closed side end portion 6, and have a shape that is bilaterally symmetrical with respect to the closed side end portion 6 of the two

sheet body portions

10A, 10B. In other words, the mask body 2 is formed of a sheet-like member in which the 1 st and 2

nd body portions

10A and 10B having the same shape and the same size are arranged in a bilaterally symmetrical manner.

As shown in fig. 2, the 1 st sheet body 10A and the 2 nd sheet body 10B are each formed in a shape narrowing from the facing side end 5 toward the closed side end 6, and are formed in a substantially fan shape in the present embodiment. Specifically, the 1 st sheet body portion 10A and the 2 nd sheet body portion 10B have the facing side end portion 5 formed in an arc shape and the closed side end portion 6 formed substantially linearly. In addition, in the 1 st sheet body 10A and the 2 nd sheet body 10B, an upper side edge portion 7 from the upper end of the facing side end portion 5 to the upper end of the closed side end portion 6 and a lower side edge portion 8 from the lower end of the facing side end portion 5 to the lower end of the closed side end portion 6 are inclined in directions intersecting each other on the closed side end portion 6 side. Further, the 1 st sheet body 10A and the 2 nd sheet body 10B each have a vertically symmetrical shape with respect to a center line (hereinafter, referred to as a "horizontal center line 13 a") connecting the center of the facing side end 5 of the 1 st sheet body 10A and the center of the facing side end 5 of the 2 nd sheet body 10B.

The facing side end portion 5 has a radius of curvature of 75mm to 200mm, preferably 80mm to 120mm, and more preferably 85mm to 100 mm. The facing side end portion 5 has a circular arc length of 160mm to 220mm, preferably 170mm to 210mm, and more preferably 180mm to 200 mm.

As shown in fig. 2, the 1 st and 2

nd sheet bodies

10A and 10B have concave portions 12 formed in the upper and

lower side edges

7 and 8, respectively. The recessed portion 12 is formed in a concave shape that draws a gentle arc toward the horizontal center line 13a (inside of each of the

sheet body portions

10A, 10B).

In the present embodiment, the recessed portion 12 is a circular arc portion facing the inside of each of the

sheet bodies

10A and 10B in the upper edge portion 7 and the lower edge portion 8. Specifically, as shown in fig. 2, the upper side edge portion 7 and the lower side edge portion 8 each have a wave shape in which arcuate facing side

arcuate portions

7a and 8a facing the outside of the

respective sheet bodies

10A and 10B, arcuate recessed

portions

12 and 12 facing the inside of the

respective sheet bodies

10A and 10B, and arcuate closing side arcuate portions 7B and 8B facing the outside of the

respective sheet bodies

10A and 10B are continuous in a range from the facing side end portion 5 to the closing side end portion 6. That is, the depressed portion 12 of the present embodiment is sandwiched between the facing-side

arcuate portions

7a, 8a and the closing-side

arcuate portions

7b, 8 b. The recessed portion 12 of the upper edge portion 7 is a region from the apex of the facing side arc portion 7a (upper inflection point UF) to the apex of the closed side arc portion 7b (lower inflection point LF), and the recessed portion 12 of the lower edge portion 8 is a region from the apex of the facing side arc portion 8a (upper inflection point UF) to the apex of the closed side arc portion 8b (lower inflection point LF).

In the present embodiment, from the viewpoint of efficiently transmitting the pressing force of the fingers when deforming the mask body 2 into a cup shape to the facing side end portion 5 side and smoothly opening the opening, the recessed portion 12 is preferably recessed toward the facing side end portion 5 side. As shown in fig. 2, in particular, it is preferable that each recessed portion 12 is located at a position closer to the facing side end portion 5 than the centroid position of each

sheet body portion

10A, 10B, at the intersection of the recessed direction 13B of the recessed portion 12 in the upper side edge portion 7 and the recessed direction 13c of the recessed portion 12 in the lower side edge portion 8. Further, it is further preferable that the intersection point is located on the horizontal center line 13 a.

The concave portion 12 has a radius of curvature of 10mm to 50mm, preferably 20mm to 40mm, and more preferably 25mm to 35mm at the vertex portion. The recessed portion 12 has a circular arc length of 20mm to 60mm, preferably 30mm to 50mm, and more preferably 35mm to 45 mm.

In the present embodiment, as shown in fig. 3, the mask body 2 has a multilayer structure. That is, the mask body 2 includes an inner sheet 14 and an outer sheet 16, the inner sheet 14 forming an inner surface when formed into a cup shape, and the outer sheet 16 forming an outer surface when formed into a cup shape. The inner sheet 14 and the outer sheet 16 are formed in the same shape and the same size, and the steam generator 3 is disposed between the inner sheet 14 and the outer sheet 16.

The steam generator 3 is disposed on both the 1 st sheet body 10A and the 2 nd sheet body 10B so as to be bilaterally symmetrical with the closed-side end 6 as a boundary. Specifically, from the viewpoint of generating a space surrounded by the mouth, nose, cheeks and the steam generator 3 of the user when the mouth and nose of the user are covered with the cup-shaped mask body 2 (see fig. 6), increasing the temperature and absolute humidity in the steam generating device 1 without suppressing the generation of water vapor, and suppressing the contact of the steam generator 3 with the skin, it is preferable that the steam generator 3 is disposed in the vicinity of the blocking-side end 6 of the mask body 2 in bilateral symmetry as shown in fig. 2 and 3.

More specifically, each steam generator 3 is preferably arranged such that the distance D between the end of each steam generator 3 on the side of the closed-end 6 and the closed-end 6₁The shortest distance (see fig. 3) is preferably not more than 15mm, more preferably not more than 12mm, and further preferably not less than 5mm, and more preferably not less than 7 mm. Further, each steam generator 3 is preferably arranged such that the distance D between the facing-side end 5-side end of each steam generator 3 and the facing-side end 5 is₂The shortest distance (see fig. 3) is preferably not less than 15mm, more preferably not less than 20mm, and further preferably not more than 30mm, and more preferably not more than 25 mm. In addition, these distances D₁And a distance D₂Refers to the distance on the horizontal centerline 13 a.

An adhesive (not shown) is applied to the outer sheet 16, and the steam generator 3 and the inner sheet 14 are bonded to the outer sheet 16 via the adhesive. As the adhesive, a hot-melt adhesive is preferably used, but not limited thereto, and various known fixing methods can be used. Alternatively, the adhesive may be applied to the inner sheet 14 instead of or in addition to the adhesive applied to the outer sheet 16.

The material of the inner sheet 14 and the outer sheet 16 may be any material conventionally used in the art of sanitary masks, and the type of material is not particularly limited as long as it has a certain air permeability. For example, a fibrous sheet such as a nonwoven fabric or a gauze can be used, and a nonwoven fabric is preferably used from the viewpoint of ease of processing and economy and from the viewpoint of obtaining good shape retention.

The fiber material of the nonwoven fabric is preferably selected from polyesters such as PET (polyethylene terephthalate); polyolefins such as PE (polyethylene), PP (polypropylene), ethylene propylene copolymers and the like; artificial silk; cotton, etc. and 1 or 2 or more kinds of fibers. The nonwoven fabric may be a single-layer or multi-layer structure made of fibers of 1 or 2 or more kinds of the above-mentioned raw materials by a hot air method, a spunbond method, a needle-punch method, a melt-blown method, a carding method, a heat-sealing method, a water-jet interlacing method, a solvent bonding method, or the like. When both the inner sheet 14 and the outer sheet 16 are made of single-layer or multi-layer nonwoven fabric, the steam generator 3 is sandwiched by 2 or more nonwoven fabrics.

The inner sheet 14 is preferably air-permeable from the viewpoint of efficiently applying the action of the diffused steam to the body of the user of the steam generating device 1. On the other hand, the outer sheet 16 may be made of any material according to the design of the product, and may be a breathable sheet or a non-breathable sheet, and may have stretchability or non-stretchability. Examples of the stretchable sheet include a sheet containing elastic fibers as constituent fibers, a sheet containing elastic filaments, and a sheet exhibiting stretchability by a structure such as rib knitting.

The inner sheet 14 and the outer sheet 16 may have a grammage enough to exhibit a rigidity enough to hold the shape when the user holds the sheet in his hand. The inner sheet 14 is preferably made of a material for improving the tactile sensation of the skin, and the outer sheet 16 is preferably made of a material suitable for imparting shape retention to the mask body 2.

Specifically, the grammage of the inner sheet 14 is preferably 20g/m²Above, more preferably 40g/m²Above, more preferably 60g/m²The above, preferably 150g/m²Hereinafter, it is more preferably 120g/m²Hereinafter, more preferably 100g/m²The following. Further, the grammage of the outer sheet 16 is preferably 30g/m²Above, more preferably 50g/m²Above, more preferably 70g/m²The above is preferably 200g/m²Hereinafter, it is more preferably 150g/m²Hereinafter, more preferably 100g/m²The following.

As shown in fig. 4, the mask body 2 is formed into a bag shape having an opening at the mask side end 5 by joining the edge portions (the mask side end 6, the upper side edge 7, and the lower side edge 8) of the 1 st sheet body 10A and the 2 nd sheet body 10B other than the mask side end 5 to each other so that the inner sheet 14 is positioned inside in a state where the 1 st sheet body 10A and the 2 nd sheet body 10B are folded around the mask side end 6. Specifically, in the mask body 2 of the present embodiment, in a state where the 1 st panel body 10A and the 2 nd panel body 10B are overlapped with each other, the upper side edge 7 of the 1 st panel body 10A and the upper side edge 7 of the 2 nd panel body 10B are sealed by the upper side edge joint 20, and the lower side edge 8 of the 1 st panel body 10A and the lower side edge 8 of the 2 nd panel body 10B are sealed by the lower side edge joint 22.

The term "joined" in the present specification includes, for example, a structure in which the 1 st sheet body portion 10A and the 2 nd sheet body portion 10B are integrally formed from the beginning, in addition to a structure in which the 1 st sheet body portion 10A and the 2 nd sheet body portion 10B are bonded later by any method such as thermal welding, ultrasonic welding, high-frequency welding, and an adhesive. Therefore, for example, since the occlusion side end portion 6 of the present embodiment is configured such that the 1 st sheet body portion 10A and the 2 nd sheet body portion 10B are integrally continuous, occlusion is started from the beginning, and such an occlusion state is also included in "joined" in the present specification.

As shown in fig. 4, the upper side edge joining portion 20 has a linear shape along the upper side edge portion 7, and the lower side edge joining portion 22 has a linear shape along the lower side edge portion 8. Specifically, as shown in fig. 4, the upper side edge joint 20 and the lower side edge joint 22 are inclined with respect to the horizontal center line 13a such that the distance between the upper side edge joint 20 and the lower side edge joint 22 gradually decreases from the closed side end 6 toward the closed side end 5. In addition, from the viewpoint of deforming the mask body 2 into a shape along the nose and jaw to form the steam generator 1 having good adhesion to the three-dimensional shape of the face, the upper side edge joining portion 20 and the lower side edge joining portion 22 are curved into a concave shape along the recessed portion 12, that is, drawing a gentle arc toward the horizontal center line 13a (the inside of each

sheet body portion

10A, 10B).

As shown in fig. 4, the upper side edge joining portion 20 is provided at a predetermined interval from the upper side edge portion 7 toward the horizontal center line 13a, and thereby a dry edge (dry edge)24 to which no joining process is applied is formed between the upper side edge portion 7 and the upper side edge joining portion 20. Similarly, the lower side edge joining portion 22 is provided at a predetermined interval from the lower side edge portion 8 toward the horizontal center line 13a, and thereby a dry edge 24 not subjected to the joining process is formed between the lower side edge portion 8 and the lower side edge joining portion 22. The upper side edge joining portion 20 is provided on the inside with a gap of 0.5mm or more and 5.0mm with respect to the upper side edge portion 7, and the lower side edge joining portion 22 is provided on the inside with a gap of 0.5mm or more and 5.0mm with respect to the lower side edge portion 8.

The mask body 2 having the above-described configuration is configured such that the arc-shaped peripheral portions (openings of the facing side end portions 5) of the 1 st sheet body portion 10A and the 2 nd sheet body portion 10B which are not joined are opened by placing a hand on the recessed portion 12 of the upper side edge portion 7 and the recessed portion 12 of the lower side edge portion 8 and pressing the upper side edge portion 7 and the lower side edge portion 8 in a direction in which the upper side edge portion 7 and the lower side edge portion 8 are brought close to each other, thereby being deformed from a flat bag shape (see fig. 4) into a three-dimensional cup shape (see fig. 1).

The mask body 2 has a rigidity enough to maintain a cup shape (shape retainable) in a state held by a user's hand. As shown in fig. 1, the mask body 2 has a circumferential surface that narrows from the facing side end 5 toward the closing side end 6 while maintaining a cup-like shape (a state in which the opening of the facing side end 5 is open). Further, the mask body 2 has a pair of recessed portions 12 on the peripheral surface thereof, which are recessed toward the internal space 4, and the pair of recessed portions 12 are formed at positions (in the present embodiment, the upper side edge portion 7 and the lower side edge portion 8) of the peripheral surface of the mask body 2 facing each other.

As shown in fig. 5 and 6, the opening of the mask body 2 at the closing face side end 5 has a size capable of covering the mouth and nose of the user.

Specifically, the width W (see fig. 8) of the opening of the mask body 2 at the facing side end 5 in the state of being held in the cup shape is preferably 40mm or more, more preferably 60mm or more, and even more preferably 80 or more, and further preferably 170mm or less, more preferably 150mm or less, and even more preferably 130mm or less. By setting the width W of the opening of the facing side end portion 5 to 40mm or more, the size of the opening can be set to cover the mouth and nose of the user, and the steam generator 3 can be prevented from being excessively distant from the mouth and nose, thereby generating an appropriate temperature feeling and an appropriate amount of steam. Further, the width W of the opening of the facing side end portion 5 is 170mm or less, which has an advantage that the steam generator 3 can be prevented from excessively approaching the mouth and nose, and a moderate temperature and steam amount can be generated. Further, the width W of the opening of the facing side end portion 5 can be used without any problem even in a configuration in which the size of the opening can be changed as described later. As shown in fig. 8, the "width W of the opening of the facing side end portion 5" is a linear distance between the center of the facing side end portion 5 of the 1 st sheet body portion 10A and the center of the facing side end portion 5 of the 2 nd sheet body portion 10B in a state where the shape is kept in a cup shape.

The height H (see fig. 8) of the opening of the mask body 2 at the facing side end 5 in the state of being held in the cup shape is preferably 50mm or more, more preferably 70mm or more, and still more preferably 90 mm or more, and is preferably 150mm or less, more preferably 140mm or less, and still more preferably 130mm or less. By setting the height H of the opening of the facing side end portion 5 to 50mm or more, the size of the opening can be set to cover the mouth and nose of the user, and the steam generator 3 can be prevented from being excessively distant from the mouth and nose, thereby generating an appropriate temperature feeling and an appropriate amount of steam. Further, the height H of the opening of the facing side end portion 5 is 150mm or less, so that the steam generator 3 can be prevented from excessively approaching the mouth and nose, and an appropriate temperature feeling and steam amount can be prevented. Further, the height H of the opening of the facing side end portion 5 can be used without any problem even in a configuration in which the size of the opening can be changed as described later. As shown in fig. 8, the "height H of the opening of the facing side end portion 5" is a linear distance between an intersection of the upper side edge portion 7 and the facing side end portion 5 and an intersection of the lower side edge portion 8 and the facing side end portion 5 in a state where the shape is kept in a cup shape.

As shown in fig. 5 and 6, the volume of the internal space 4 formed between the mask body 2 and the face of the user is preferably 50ml to 200ml, and more preferably 100ml to 150ml, in a state where the mouth and nose of the user are covered with the opening of the mask side end portion 5. By setting the volume of the internal space 4 to be equal to or less than the upper limit value, a sufficient feeling of steam can be imparted while maintaining favorable handleability and appearance. Further, by setting the volume of the internal space 4 to be equal to or greater than the lower limit value, it is easy to breathe and to provide steam and aroma components.

The internal space 4 formed between the mask body 2 and the face of the user is not limited to a closed space formed by the mask body 2 contacting the face of the user, and may have a slight gap between the mask body 2 and the face of the user. The minute gap here refers to a gap that may be generated when the steam generating device 1 is worn by a usual method. Since the gap is of such a size as not to impair the effect of the steam generated by the steam generator 3, even when such a gap is provided, the gap portion can be treated as a portion closed along the edge portion of the mask body 2.

[ volumetric measurement of internal space ]

Here, the volume of the internal space 4 can be measured as follows. That is, the usage state of the steam generator 1 can be reproduced using a HUMAN head model created using average HUMAN head data (latest data at the time of application) manufactured by DIGITAL HUMAN head testing inc. Further, as shown in japanese patent laid-open No. 2012 and 205926, since a liquid impermeable film is disposed on the inside of the mask and water is injected into the portion, the mask is put on the face in the same state as the mask is put on, and the amount of the remaining water is measured, the volume of the internal space 4 can be measured by the method disclosed in japanese patent laid-open No. 2012 and 205926 even when three-dimensional data is difficult to be obtained due to the shape of the steam generating device 1.

[ constitution of steam Generator ]

The steam generator 3 is configured to generate heat and generate steam by reacting with oxygen in the air, and to supply warm steam to a user. As an embodiment of the steam generator 3, for example, a mixture of powders, a sheet such as a paper-made sheet, or a coated sheet obtained by coating a base material with a dispersion liquid or the like can be used. Further, the steam generator 3 preferably contains an oxidizable metal, a carbon component, and water.

The oxidizable metal is a metal that releases heat of oxidation reaction, and examples thereof include 1 or 2 or more kinds of powder or fiber selected from iron, aluminum, zinc, manganese, magnesium, and calcium. Among them, iron is preferable, and iron powder is particularly preferable, from the viewpoints of handling property, safety, production cost, storage property, and stability. Examples of the iron powder include reduced iron powder and atomized iron powder. The particle diameter of the oxidizable metal particles can be, for example, about 0.1 to 300 μm.

The carbon component has at least 1 function of water retention ability, oxygen supply ability and catalytic ability, and preferably has these 3 functions in combination. As the carbon component, for example, 1 or 2 or more selected from activated carbon, acetylene black, and graphite can be used. Among them, activated carbon is more preferably used from the viewpoint of easily adsorbing oxygen during wetting and maintaining the moisture in the heating element to a constant level.

The steam generator 3 further contains a water-retaining material, and preferably a material having excellent steam diffusibility. Examples of the water-retaining material include Super Absorbent Polymers (SAP), starch, zeolite, pearlite, and vermiculite.

The planar shape of the steam generator 3 is not particularly limited, and may be circular, polygonal, or the like. In view of manufacturing efficiency, ease of handling, and heating and humidifying effects, a rectangular shape, a substantially square shape, or the like is preferable, and in view of ease of handling, a substantially square shape is more preferable. Further, the steam generator 3 is preferably provided in the steam generator, for example, in 1 or 2 or more pieces, preferably in the sheet body, and more preferably in the two left and right sheet bodies. The heat generation characteristics of the 2 steam generators may be the same or different, but are more preferably the same.

The steam generator 3 may be scented by the perfume composition. The perfume composition may be either a natural perfume or a synthetic perfume, or a mixture of both. Examples of the perfume composition include fragrance components such as terpenoids, monoterpene alcohols, sesquiterpene alcohols, aromatic alcohols, acetates, compounds having a carbonyl group, methyl dihydrojasmonate, and ionone, and compositions containing essential oils. These may be used in a mixture of 1 or more than 2. The perfume composition may contain, in addition to the above perfume components and essential oils, for example, perfume components and solvents described in "synthetic perfume chemistry and commercial knowledge" (nipponwood chemical industry journal Co., Ltd.). The solvent may contain 1 or 2 or more of dipropylene glycol, ethyl diglycol, isopropyl myristate, benzyl benzoate, triethyl citrate, and diethyl phthalate.

The content of the perfume composition can be appropriately selected according to the type thereof, the specific use of the steam generator 1, and the like. Although depending on the type of the perfume composition, the content of the perfume composition is preferably 0.5 to 6 parts by mass, more preferably 0.7 to 4.5 parts by mass, per 100 parts by mass of the oxidizable metal of the steam generator 3, as a general range.

As a method for imparting fragrance to the steam generator 3, there is a method in which, when the fragrance composition is a liquid, the fragrance composition is directly added to the steam generator 3 by spraying or the like. Further, there is a method of perfuming the constituent material (sheet, raw material, or the like) of the steam generator 3 to prepare a perfumed sheet, powdery perfume, or pasty perfumed material. When the perfume composition is a solid, there is a method of adding the perfume composition by adsorbing the perfume composition to the steam generator 3, storing the perfume composition in the steam generator 3, or the like.

Further, the cumulative steam generation amount (hereinafter referred to as "10-minute steam generation amount") of the steam generator 3 released 10 minutes after the start of steam generation is preferably 250mg or more, more preferably 350mg or more, further preferably 450mg or more, and further preferably 1000mg or less, more preferably 850mg or less, further preferably 700mg or less. By setting the steam generation amount to this amount, an appropriate amount of steam can be supplied in the first 10 minutes from the start of use of the steam generator 1, and therefore, the effect of steam generation can be more effectively provided.

[ measurement of amount of steam generated ]

Here, the 10-minute steam generation amount of the steam generator 3 is a value measured in the following manner using the apparatus 30 shown in fig. 7. The device 30 shown in fig. 7 includes a measurement chamber (2.1L in volume) 31 made of aluminum, an inlet passage 32 for allowing dehumidified air (with a humidity of less than 2% and a flow rate of 2.1L/min) to flow into a lower portion of the measurement chamber 31, an outlet passage 33 for allowing air to flow out from an upper portion of the measurement chamber 31, an inlet hygrothermograph 34 and an inlet flow meter 35 provided in the inlet passage 32, an outlet hygrothermograph 36 and an outlet flow meter 37 provided in the outlet passage 33, and a thermometer (thermistor) 38 provided in the measurement chamber 31. As the thermometer 38, a thermometer having a temperature resolution of about 0.01 ℃ was used.

The surface temperature of the skin side surface (the inner surface side surface of the mask body 2) of the steam generator 3 was measured by taking out the steam generator 3 from the oxygen blocking bag at a measurement ambient temperature of 30 ℃ (30 ± 1 ℃), placing the skin side surface of the steam generator 3, i.e., the water vapor discharge surface, on the measurement chamber 31, and placing a thermometer 38 with a metal ball (4.5g) thereon. In this state, the dehumidified air flows out from the lower portion, the difference in absolute humidity before and after the air flows into the measurement chamber 31 is obtained from the temperature and humidity measured by the inlet thermo-hygrometer 34 and the outlet thermo-hygrometer 36, and the amount of steam released from the steam generator 3 is calculated from the flow rates measured by the inlet flow meter 35 and the outlet flow meter 37. Then, the total amount of the water vapor amount measured after 10 minutes from the time point when the steam generator 3 was taken out from the oxygen barrier pouch was taken as the 10-minute steam generation amount.

[ method of Using steam Generator ]

Next, a method of using the steam generator 1 of the present embodiment will be described.

In the present embodiment, the steam generator 3 is integrated with the mask body 2, and therefore, the steam generator 1 is stored with the entire body sealed in the oxygen barrier bag. In this storage state, the mask body 2 is folded in a bag-like state.

First, the user unseals the oxygen barrier bag at the time of use, and takes out the steam generator 1 from the oxygen barrier bag. As a result, the steam generator 3 comes into contact with the air, and the steam generator 3 starts to generate heat by the oxidation reaction of the oxidizable metal contained in the steam generator 3.

After taking out the steam generator 1 from the oxygen barrier bag, as shown in fig. 5, the user places fingers on the recessed portions 12 of the upper side edge 7 and the recessed portions 12 of the lower side edge 8 of the mask body 2, and presses the upper side edge 7 and the lower side edge 8 in a direction to approach each other. As a result, the arc-shaped peripheral portions (openings of the facing side end portions 5) of the 1 st and 2

nd body portions

10A and 10B, which are not joined, are opened, and the mask body 2 is deformed from a flat bag shape into a three-dimensional cup shape. The user brings the mask body 2 close to the face so that the mouth and nose are covered with the mask body 2 deformed into a cup shape. In this case, the mask body 2 is preferably brought into close contact with the face of the user at the fitting side end 5, but the present invention is not limited thereto, and the mask body 2 may be used in a state where the fitting side end 5 is separated from the face of the user within a range in which the steam effect is not impaired.

Then, the steam generator 3 generates heat in a state where the mouth and the nose are covered with the mask body 2, and thereby the water contained in the steam generator 3 is heated by the heat to become water vapor (warm steam) of a predetermined temperature, and the water vapor is released to the internal space 4 of the mask body 2 via the inner sheet 14 of the mask body 2 and supplied to the mouth and the nose of the user. At this time, the steam generator 3 is aromatized, and therefore, the aroma component is also inhaled by the user together with the water vapor. In this way, according to the steam generating device 1 of the present embodiment, warm steam and aroma components can be supplied to the user by a simple method.

As described above, the steam generator 1 of the present embodiment includes: a mask body 2 deformable into a bottomed cylindrical shape (cup shape) having an opening at the facing side end 5; and a steam generator 3 capable of generating steam in the internal space 4 of the mask body 2, wherein the mask body 2 deformed into a cup-like state has a peripheral surface that narrows from the attachment-side end 5 toward the blocking-side end 6, the peripheral surface has a recessed portion 12 recessed toward the internal space 4, and a pair of the recessed portions 12 are formed at opposing positions on the peripheral surface of the mask body 2.

Further, according to the steam generating device 1 having such a configuration, as shown in fig. 6, when the mouth and nose of the user are covered with the opening of the facing side end portion 5, the inner surface side 12b of the recessed portion 12 (one recessed portion 12) formed in the upper side edge portion 7 is brought into contact with the nose of the user, and the inner surface side 12b of the recessed portion 12 (the other recessed portion 12) formed in the lower side edge portion 8 is brought into contact with the jaw of the user, so that the fitting property to the face of the user can be improved, and the steam generated in the internal space 4 can be prevented from leaking.

As shown in fig. 6, in the steam generating device 1 of the present embodiment, when the mouth and nose of the user are covered with the opening of the facing side end portion 5, the outer surface side 12a of the concave portion 12 formed in the upper side edge portion 7 is in contact with the fingers (for example, index finger) of the user, and the outer surface side 12a of the concave portion 12 formed in the lower side edge portion 8 is in contact with the other fingers (for example, thumb) of the user, and therefore, the grip performance when the user grips the user with the hand is also excellent.

Further, in the steam generating device 1 of the present embodiment, by forming the pair of concave portions 12, the volume of the space formed between the mask body 2 and the face of the user can be reduced as compared with the case where the pair of concave portions 12 are not formed, and therefore, the steam effect with respect to the amount of steam can be improved. That is, according to the steam generator 1 of the present embodiment, the same steam effect can be obtained with a smaller steam flow or a more excellent steam effect can be obtained with the same steam flow, as compared with the case where the pair of dimples 12 is not formed.

In particular, in the steam generator 1 of the present embodiment, a pair of upper and lower side edge joining portions (upper side edge joining portion 20 and lower side edge joining portion 22) joining the 1 st sheet body portion 10A and the 2 nd sheet body portion 10B are provided inside the upper side edge portion 7 and the lower side edge portion 8 at an interval of 0.5mm to 5.0mm, whereby a dry edge 24 is formed between the upper side edge portion 7 and the lower side edge portion 8 and the side

edge joining portions

20 and 22. According to the steam generator 1 having such a configuration, since flexibility can be imparted to the upper side edge portion 7 and the lower side edge portion 8, there is an advantage that fingers are less likely to feel pain when held by a hand during use.

In the steam generating device 1 of the present embodiment, the attachment-side end 5 is formed in an arc shape, and therefore, the attachment to the cheek of the user is also improved, the attachment to the face of the user is further improved, and the steam generated in the internal space 4 can be prevented from leaking.

Further, in the steam generator 1 of the present embodiment, the steam generator 3 is disposed in both the 1 st sheet body portion 10A and the 2 nd sheet body portion 10B, so that the same amount of steam can be inhaled into the left and right nasal cavities. Further, when the amount of steam generated by the steam generator 3 disposed in the 1 st body 10A and the steam generator 3 disposed in the 2 nd body 10B supplied to the internal space 4 for 10 minutes exceeds 500mg, sufficient warm steam is supplied to the throat and the nose, so that the function of the respiratory mucosa can be improved, the ciliary movement can be activated, and the effect of preventing cold, flu, and the like can be obtained.

Further, in the steam generator 1 of the present embodiment, since the steam generator 3 is imparted with fragrance, it is possible to enhance the relaxation effect by adding a pleasant fragrance to the steam, for example.

While the preferred embodiments of the present invention have been described above by way of example, the technical scope of the present invention is not limited to the scope described in the above embodiments. Various changes and modifications can be added to the above embodiments.

For example, although the above-described embodiment has been described as a steam generator of a hand-held type (type used by holding the mask body 2 with the hand) which does not have a lug, the steam generator may be used without being held with the hand by inserting the steam generator into the inside of a lug-type mask, for example.

In the above-described embodiment, the steam generator having the mask body 2 capable of covering the mouth and nose openings of the user has been described, but the present invention is not limited thereto, and the opening of the mask body 2 may be large enough to cover at least one of the mouth and nose of the user.

The mask body 2 may have a configuration in which the size of the opening can be changed. As an example of the configuration for changing the size of the opening, as shown in fig. 9(a) and 9(B), the opening is enlarged by cutting off a part of the

mask bodies

2A and 2B (the upper temporary joining portion 40 and the lower temporary joining portion 42). The upper temporary joining portion 40 and the lower temporary joining portion 42 are portions where the 1 st sheet body 10A and the 2 nd sheet body 10B are joined in a perforated or continuous sealed state, for example, and can be separated by an operation of separating the 1 st sheet body 10A and the 2 nd sheet body 10B from each other. The joining is not limited to a perforated shape or a continuous sealed shape, and any method may be used as long as the 1 st sheet body 10A and the 2 nd sheet body 10B can be joined to the upper temporary joining portion 40 and the lower temporary joining portion 42 and can be disconnected as described above. In addition, "combined" means as described above.

In such a modification, the upper temporary bonding portion 40 may have any configuration such as a configuration extending from the intersection of the upper side edge portion 7 and the mask side end portion 5 along the mask side end portion 5, as in the mask body 2A shown in fig. 9(a), or a configuration extending from the middle portion of the upper side edge portion 7 toward the mask side end portion 5, as in the mask body 2B shown in fig. 9 (B). The lower temporary joining portion 42 may have any configuration such as a configuration extending from the intersection of the lower edge portion 8 and the mask side end portion 5 along the mask side end portion 5, as in the mask body 2A shown in fig. 9(a), or a configuration extending from the middle portion of the lower edge portion 8 toward the mask side end portion 5, as in the mask body 2B shown in fig. 9 (B).

According to the

mask bodies

2A and 2B according to the modified examples, the size of the opening can be freely changed by separating the upper temporary joining portion 40 and the lower temporary joining portion 42, and therefore, the size of the opening can be adjusted on the user side according to the preference of the user, the age (adult, child), the face size, and the like of the user.

In the above-described embodiment, the steam generator having the foldable mask body 2 has been described, but the present invention is not limited thereto, and the shape may be kept in advance.

In the above-described embodiment, the mask body 2 is described as a steam generator formed in a bag shape by folding a single sheet-like member in which the 1 st sheet body portion 10A and the 2 nd sheet body portion 10B are integrally continuous at the closed side end portion 6 and joining the upper side edge portion 7 and the lower side edge portion 8, but the present invention is not limited thereto. For example, the mask body 2 may be formed into a bag shape by overlapping the 1 st sheet body 10A and the 2 nd sheet body 10B separated from each other and joining the closed-side end portion 6, the upper side edge portion 7, and the lower side edge portion 8.

In the above-described embodiment, the steam generator in which 1 recess 12 is formed in each of the upper edge 7 and the lower edge 8 has been described, but the number of the recesses 12 can be arbitrarily changed. When the plurality of concave portions 12 are formed in this manner, there is an advantage that the mask body 2 can be supported more stably by improving the adhesion of fingers when the mask body 2 is held by a plurality of fingers.

In the above-described embodiment, the steam generator in which the 1 st and 2

nd sheet bodies

10A and 10B have vertically symmetrical shapes has been described, but the present invention is not limited thereto, and may have vertically asymmetrical shapes. For example, the number of the recessed portions 12 formed in the upper edge portion 7 may be different from the number of the recessed portions 12 formed in the lower edge portion 8. As such a modification, for example, as in the mask body 2C shown in fig. 10, a configuration is exemplified in which 2

concave portions

12A, 12B are formed in the upper

side edge portion

7 and 1 concave portion 12 is formed in the lower side edge portion 8. The recessed

portions

12A and 12B formed in the upper edge portion 7 have a smaller radius of curvature and a shorter arc length than the recessed portion 12 formed in the lower edge portion 8. According to the mask body 2C, for example, 2 fingers (for example, an index finger and a middle finger or a middle finger and a ring finger) can be placed on the 2

depressed portions

12A and 12B formed in the upper side edge portion 7, and the mask body 2C can be held in a state where 1 finger (for example, a thumb) is placed on the depressed portion 12 formed in the lower side edge portion 8, and therefore, there is an advantage that the mask body 2C can be stably supported as compared with a case where the mask body is held by one finger each in the upper and lower directions.

In the above-described embodiment, the steam generating device in which the fingers are placed in the recessed portions 12 formed in the upper side edge portion 7 and the lower side edge portion 8 has been described, but the present invention is not limited to this, and for example, as shown in fig. 11 and 12, the steam generating device may be configured such that the fingers are inserted into the through holes 54 or slits 56 formed in the recessed portions 12. As an example of such a modification, for example, as shown in fig. 11, the mask body 2D includes the margin portions 50 and 52 (specifically, the

margin portions

50 and 52 extending in a flange shape from the upper side edge portion 7 and the lower side edge portion 8) extending from the peripheral surface of the mask body 2D, and through holes 54 having a size allowing insertion of the fingers of the user are formed in positions of the

margin portions

50 and 52 close to the recessed portions 12. Instead of the through-hole 54, a slit 56 through which a finger can be inserted may be formed, for example, as in the mask body 2E shown in fig. 12. In fig. 11 and 12, the through holes 54 and the slits 56 are provided in the upper edge portion 7 and the lower edge portion 8, respectively, but the number thereof is not limited. For example, two upper side edge portions 8 may be provided, and one lower side edge portion 8 may be provided. In this case, the

mask bodies

2D and 2E can be stably supported, as compared with the case where the mask bodies are held by one finger at each of the upper and lower sides.

Such mask bodies

2D and 2E have an advantage that they are less likely to be fatigued even if the

mask bodies

2D and 2E are held for a long time.

In the above-described embodiment, the steam generator in which the facing side end portions 5 of the 1 st sheet body portion 10A and the 2 nd sheet body portion 10B are formed in the arc shape has been described, but the steam generator is not limited thereto, and any shape such as a straight shape may be adopted.

In the above-described embodiment, the steam generator in which the arcuate facing-side

arcuate portions

7a and 8a and the closed-side arcuate portions 7B and 8B facing the outer sides of the

respective sheet bodies

10A and 10B are provided so as to sandwich the depressed portion 12 has been described, but the present invention is not limited thereto, and for example, both sides of the depressed portion 12 may be formed linearly.

In the above embodiment, the steam generator in which the dry edge is formed at the upper side edge portion 7 and the lower side edge portion 8 of the 1 st sheet body portion 10A and the 2 nd sheet body portion 10B has been described, but the steam generator is not limited thereto, and may be configured without forming a dry edge.

In the above-described embodiment, the steam generator has been described as one steam generator in which one steam generator 3 is provided in each of the 1 st sheet body 10A and the 2 nd sheet body 10B, but the present invention is not limited thereto, and for example, a configuration may be adopted in which a plurality of steam generators 3 are provided in each of the 1 st sheet body 10A and the 2 nd sheet body 10B, or a configuration may be adopted in which a steam generator 3 is provided only in any one of the 1 st sheet body 10A and the 2 nd sheet body 10B. Further, the steam generator 3 may be configured not only to be wrapped in the 1 st and 2

nd body portions

10A and 10B, but also to be provided with a pocket-like storage portion on the inner surface of the mask body 2, and the steam generator 3 may be attached to and detached from the storage portion, or the steam generator 3 may be fixed to the inner surface of the mask body 2 by a fixing means such as an adhesive. Further, in the type in which the steam generator 3 is subsequently attached to the mask body 2, the steam generator 3 alone may be sealed in an oxygen-blocking bag and stored. In the case where a plurality of steam generators 3 are provided, the steam characteristics and shapes may be the same or different from each other, but from the viewpoint of uniformly supplying steam and fragrance to the user, the steam generators are preferably the same shape and have the same steam characteristics.

In the above-described embodiment, the steam generator to which the steam generator 3 is imparted with fragrance has been described, but the present invention is not limited thereto, and may be a steam generator to which fragrance is not imparted.

The modifications described above are obviously included in the scope of the present invention according to the description of the claims.

In the above embodiment, the present invention further discloses the following steam generator.

<1>

A steam generating device is provided with: a bottomed cylindrical mask body having an opening at a facing side end portion; and a steam generator capable of generating steam in the inner space of the mask body,

the mask body has a peripheral surface that narrows from the facing side end toward a closed side end located on the opposite side of the facing side end,

the peripheral surface of the mask body has a recessed part recessed toward the internal space,

a pair of the concave portions is formed at a position facing the peripheral surface of the mask body.

<2>

The steam generating device according to the above <1>, wherein the mask body includes a 1 st body part forming a half peripheral surface of the mask body and a 2 nd body part forming a remaining half peripheral surface,

the 1 st sheet body portion and the 2 nd sheet body portion are formed in a bag shape in which edge portions other than the facing side end portion are joined to each other, and are configured to be deformable into the bottomed tubular shape by opening an opening of the facing side end portion,

the 1 st sheet body portion and the 2 nd sheet body portion have the recessed portions at a pair of side edge portions from the facing side end portion to the closed side end portion.

<3>

The steam generating device according to the above <2>, wherein the pair of side edge portions are provided with side edge joint portions for joining the 1 st sheet body portion and the 2 nd sheet body portion to each other, respectively, and each side edge joint portion has a shape along the recessed portion.

<4>

The steam generating device according to the above <3>, wherein the side edge joining portions are provided inside at an interval of 0.5mm to 5.0mm with respect to the side edge portions, and a dry edge is formed between the side edge portions and the side edge joining portions.

<5>

The steam generator according to any one of the above <2> to <4>, wherein the facing side end portions are formed in an arc shape in the 1 st sheet body portion and the 2 nd sheet body portion.

<6>

The steam generating device according to the above <5>, wherein the facing side end portion preferably has a radius of curvature of 75mm or more and 200mm or less, more preferably 80mm or more and 120mm or less, and still more preferably 85mm or more and 100mm or less.

<7>

The steam generating device according to the above <5> or <6>, wherein the facing side end portion preferably has a circular arc length of 160mm or more and 220mm or less, more preferably 170mm or more and 210mm or less, and still more preferably 180mm or more and 200mm or less.

<8>

The steam generator according to any one of the above <2> to <7>, wherein the steam generator is disposed on both the 1 st sheet body portion and the 2 nd sheet body portion with the closed-side end portion as a boundary.

<9>

The steam generating device according to the above <8>, wherein the steam generator is preferably arranged such that a distance between the end portion of the steam generator on the occlusion side end portion side and the occlusion side end portion is 15mm or less, more preferably 12mm or less, and the shortest distance is preferably arranged to be 5mm or more, more preferably 7mm or more.

<10>

The steam generating device according to the above <8> or <9>, wherein the steam generator is preferably arranged such that a distance between an end portion of the steam generator on the facing-side end portion side and the facing-side end portion is 15mm or more, more preferably 20mm or more, and the shortest distance is preferably 30mm or less, more preferably 25mm or less.

<11>

The steam generating device according to any one of the above <1> to <10>, wherein the steam generator generates steam in an amount of 250mg or more per 10 minutes.

<12>

The steam generating device according to the above <11>, wherein the steam generator generates steam in an amount of 350mg or more, more preferably 450mg or more, preferably 1000mg or less, more preferably 850mg or less, more preferably 700mg or less, more preferably 10 minutes.

<13>

The steam generating device according to any one of the above <1> to <12>, wherein the steam generating body is sandwiched by 2 or more nonwoven fabrics.

<14>

The steam generating device according to any one of the above <1> to <13>, wherein the steam generating body is imparted with fragrance.

<15>

The steam generating device according to any one of the above <1> to <14>, wherein the mask body is capable of covering the mouth and nose of the user.

<16>

The steam generating device according to the above <15>, wherein the mask body has a volume of an internal space formed between the mask body and the face of the user, in a state in which the mouth and the nose of the user are covered with the opening at the facing-side end portion, of preferably 50ml to 200ml, and more preferably 100ml to 150 ml.

<17>

In the steam generating device according to the above <15> or <16>, when the mask body covers the mouth and nose of the user with the opening at the facing-side end portion, the mask body has an inner surface side of one of the concave portions which comes into contact with the nose of the user and an inner surface side of the other concave portion which comes into contact with the jaw of the user.

<18>

The steam generating device according to any one of the above <1> to <17>, wherein the width of the opening of the facing side end portion of the mask body in a state in which the opening is open is preferably 40mm or more, more preferably 60mm or more, further preferably 80 or more, and further preferably 170mm or less, more preferably 150mm or less, further preferably 130mm or less.

<19>

The steam generating device according to any one of the above <1> to <18>, wherein a height of the opening of the facing side end portion of the mask body in a state in which the opening is open is preferably 50mm or more, more preferably 70mm or more, further preferably 90 or more, and further preferably 150mm or less, more preferably 140mm or less, further preferably 130mm or less.

<20>

The steam generator according to any one of the above <1> to <19>, wherein the recessed portion is recessed toward the end portion on the close surface side.

<21>

The steam generating device according to any one of the above <1> to <20>, wherein the recessed portion preferably has a radius of curvature of 10mm or more and 50mm or less, more preferably 20mm or more and 40mm or less, and still more preferably 25mm or more and 35mm or less at the vertex portion.

<22>

The steam generating device according to any one of the above <1> to <21>, wherein the recessed portion preferably has a circular arc length of 20mm or more and 60mm or less, more preferably 30mm or more and 50mm or less, and still more preferably 35mm or more and 45mm or less at the vertex portion.

<23>

The steam generating device according to any one of the above <1> to <22>, wherein the mask body includes an inner sheet forming an inner surface and an outer sheet forming an outer surface,

the grammage of the inner sheet is preferably 20g/m²Above, more preferably 40g/m²Above, more preferably 60g/m²The above, preferably 150g/m²Hereinafter, it is more preferably 120g/m²Hereinafter, more preferably 100g/m²In the following, the following description is given,

the grammage of the outer sheet 16 is preferably 30g/m²Above, more preferably 50g/m²Above, more preferably 70g/m²The above is preferably 200g/m²Hereinafter, it is more preferably 150g/m²Hereinafter, more preferably 100g/m²The following.

<24>

The steam generating device according to any one of the above <1> to <23>, wherein the mask body is configured such that the size of the opening can be changed.

<25>

The steam generating device according to the above <24>, wherein the mask body is configured such that a size of the opening can be changed by cutting off a part of the mask body.

<26>

The steam generating device according to any one of the above <1> to <25>, wherein the recessed portions are formed in an upper side edge portion and a lower side edge portion of the mask body,

a plurality of the recessed portions are formed in at least one of the upper side edge portion and the lower side edge portion.

<27>

The steam generator according to the above <26>, wherein 2 recessed portions are formed in the upper side edge portion, and 1 recessed portion is formed in the lower side edge portion.

<28>

The steam generating device according to the above <27>, wherein the recessed portion formed in the upper side edge portion has a smaller radius of curvature and a shorter arc length than the recessed portion formed in the lower side edge portion.

<29>

The steam generating device according to any one of the above <1> to <28>, wherein the mask body has a margin portion extending from a peripheral surface of the mask body, and a through hole or a slit through which a finger of a user can be inserted is formed in the margin portion at a position close to the recessed portion.

<30>

The steam generating device according to any one of the above <1> to <29>, which is a steam generating device of a type that is held by a user without a hanger.

Description of the symbols

1: steam generating device

2: mask body

3: steam generator

4: inner space

5: facing side end part

6: closed side end

7: upper side edge part

8: lower side edge part

10A: the 1 st sheet part

10B: 2 nd sheet body part

12: concave part

14: inner surface sheet

16: exterior sheet

20: upper side edge joint part (side edge joint part)

22: lower side edge joint (side edge joint)

24: dry edge

Claims

1. A steam generating device, wherein,

the steam generator is provided with: a bottomed cylindrical mask body having an opening at a facing side end portion; and a steam generator capable of generating steam in the inner space of the mask body,

2. The steam generating appliance of claim 1,

the mask body comprises a 1 st body part forming a half peripheral surface of the mask body and a 2 nd body part forming the remaining half peripheral surface,

3. The steam generating appliance of claim 2,

a side edge joining part for joining the 1 st sheet body part and the 2 nd sheet body part to each other is provided on each of the pair of side edge parts,

each side edge joint has a shape along the recessed portion.

4. The steam generating appliance of claim 3,

each side edge joint part is arranged at the inner side with an interval of more than 0.5mm and less than 5.0mm relative to the side edge part,

a dry edge is formed between the side edge portion and the side edge joining portion.

5. The steam generating device as claimed in any one of claims 2 to 4,

the 1 st sheet body portion and the 2 nd sheet body portion are formed with the facing side end portions in an arc shape.

6. The steam generating device as claimed in any one of claims 1 to 5,

the steam generator has a steam generation amount of 250mg or more in 10 minutes.

7. The steam generating device as claimed in any one of claims 1 to 6,

the steam generating body is sandwiched by two or more nonwoven fabrics.

8. The steam generating device as claimed in any one of claims 1 to 7,

the steam generating body is aromatized.