KR102352150B1 - Skin-whitening mask, skin-whitening device and skin-whitening method using the same - Google Patents

Abstract

The present specification relates to a skin whitening mask, a skin whitening device, and a skin whitening method using the same, and more particularly, to a skin whitening mask for whitening skin using cooling therapy, a skin whitening device, and a skin whitening method using the same, The present specification is a whitening mask for performing skin whitening, the lower part of which is in contact with the user's face, but a contact layer provided of a flexible material so as to be in close contact with the face, disposed on the upper part of the contact layer, and cooled below the melting point A phase change material that is prepared in a state and applies cooling heat to the user's skin using latent heat at the melting point for at least the duration that the melting point is maintained through the contact layer - The phase change material is a pigment by melanocytes having a melting point below a target temperature at which deposition is inhibited, and having a mass that maintains said duration longer than a first time required for inhibition of pigmentation and shorter than a second time at which damage to the skin occurs Disclosed is a skin whitening mask comprising a cooling layer and an outer cover disposed on the cooling layer, provided in a shape corresponding to the user's face, and provided with an insulating material so that the cooling heat of the cooling layer does not leak to the outside. do.

Description

Skin whitening mask, skin whitening device, and skin whitening method using the same

The present invention relates to a skin whitening mask, a skin whitening device, and a skin whitening method using the same, and more particularly, to a skin whitening mask for whitening skin using cooling therapy, a skin whitening device, and a skin whitening method using the same.

Recently, as the quality of life has improved, interest in skin beauty is increasing. In skin beauty, there is a demand for spot removal, pore reduction, scar removal, and wrinkle improvement, but overall there is a great demand for skin whitening that whitens the skin tone.

Therefore, in the prior art, to whiten the skin color, functional substances such as inhibiting melanin-producing enzymes are absorbed into the skin to perform skin whitening, but these functional substances are used due to safety issues such as irritation and redness when applied to the skin. There is a problem in that there is a limitation or the effect is insignificant, so that the skin whitening effect cannot be expected substantially.

Therefore, there is a need to develop a technology for a technology that is substantially whitening.

An object to be solved is to provide a skin whitening mask, a skin whitening device, and a skin whitening method using the same to obtain a whitening effect by maintaining the skin at a low temperature for a certain period of time using a phase change material maintained at a low temperature.

Another object to be solved is to provide a skin whitening mask, a skin whitening device, and a skin whitening method using the same, which achieve the effect of preventing skin damage by controlling the time the skin is cooled by adjusting the dose of the phase change material.

The problem to be solved by the present invention is not limited to the above-mentioned problems, and the problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the present specification and the accompanying drawings. .

According to an aspect of the present invention, there is provided a whitening mask for performing skin whitening, the lower part of which is in contact with the user's face, but a contact layer provided of a flexible material so as to be in close contact with the face, disposed on the upper portion of the contact layer, the melting point A phase change material that is prepared in a cooled state below and applies cooling heat to the skin of the user by using the latent heat at the melting point for at least the duration that the melting point is maintained through the contact layer - The phase change material is melano having a melting point below a target temperature at which pigmentation by the site is suppressed, and having a mass that maintains the duration longer than the first time required for suppression of pigmentation and shorter than the second time at which damage to the skin occurs - Skin comprising a cooling layer comprising and an outer cover disposed on top of the cooling layer, provided in a shape corresponding to the user's face, and provided with an insulating material so that the cooling heat of the cooling layer does not leak to the outside A whitening mask may be provided.

According to another aspect of the present invention, there is provided a skin whitening device for performing skin whitening, the lower part of which is in contact with the user's body part, but a contact layer provided of a flexible material so as to be in close contact with the body part, disposed on the upper part of the contact layer A phase change material that is prepared in a cooled state below the melting point and applies cooling heat to the user's skin using the latent heat at the melting point for at least the duration that the melting point is maintained through the contact layer - the phase The modifier has a melting point smaller than the target temperature at which pigmentation by melanocytes is suppressed, and the duration is longer than the first time required for suppression of the pigmentation and shorter than the second time at which damage to the skin occurs A skin whitening device including a cooling layer including - and an outer cover disposed on the cooling layer, and provided with an insulating material so that the cooling heat of the cooling layer does not leak to the outside can be provided.

According to another aspect of the present invention, the lower portion of the contact layer is in contact with the user's face and is provided with a flexible material, which is disposed on the upper portion of the contact layer and has a melting point smaller than the target temperature at which pigmentation by melanocytes is suppressed. A skin whitening mask comprising: a cooling layer containing a phase change material; cooling the cooling layer to below the melting point of the phase change material, placing the skin whitening mask on the user's face so that the lower part of the contact layer is in close contact with the face, at least melting through the contact layer The face in close contact with the lower part of the contact layer by applying cooling heat to the user's skin using the latent heat at the melting point of the phase change material for a duration in which the dot is maintained at least longer than the first time required to suppress the pigmentation. There is provided a skin whitening method comprising the steps of inhibiting the pigmentation of the phase change material and preventing damage to the face as the phase change of the phase change material is terminated before a second time elapses when the damage to the skin occurs can be

The solutions to the problems of the present invention are not limited to the above-described solutions, and solutions not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the present specification and the accompanying drawings. will be able

According to an embodiment of the present specification, a whitening effect can be obtained by suppressing pigmentation caused by melanocytes by maintaining the skin at a low temperature for a certain period of time using a phase change material maintained at a low temperature.

According to an embodiment of the present specification, it is possible to obtain an effect of preventing damage to the skin due to excessive cooling by controlling the time for skin cooling by adjusting the capacity of the phase change material.

Effects of the present invention are not limited to the above-described effects, and effects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention pertains from the present specification and accompanying drawings.

1 is a diagram illustrating a state in which a user uses a skin whitening mask according to an embodiment.
2 is a perspective view of a skin whitening mask according to an embodiment.
3 is a graph showing changes in skin temperature with time when skin cooling is performed through a cooling layer containing water having a melting point of 0 °C.
4 is a cross-sectional view of a skin whitening mask according to an embodiment.
5 is a cross-sectional view of a mask having a cooling layer having a two-layer structure according to an exemplary embodiment.
6 is a graph showing the temperature versus time of the skin whitening mask having a cooling layer having a two-layer structure according to an embodiment.
7 is a diagram illustrating a cooling layer divided into a plurality of cooling regions according to an exemplary embodiment.
8 is a cross-sectional view of a skin whitening mask including a reversible Zion pigment according to an exemplary embodiment.
9 is a diagram illustrating a skin whitening mask including a device for measuring a temperature and giving a notification to a user according to an embodiment.
10 is a cross-sectional view of a skin whitening mask including a temperature indicating device according to an exemplary embodiment.
11 is a diagram illustrating a configuration diagram of a temperature indicating device according to an exemplary embodiment.
12 is a front view of a skin whitening device according to an exemplary embodiment.
13 is a diagram illustrating a state in which a skin whitening device according to an embodiment is used on a user's upper body.
14 is a diagram illustrating a state in which a skin whitening device according to an embodiment is used on a user's wrist.
15 is a diagram illustrating a state in which a skin whitening device according to an embodiment is used on a user's foot.
16 is a flowchart of a skin whitening method using a skin whitening mask according to an embodiment.

The above-mentioned objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. However, since the present invention may have various changes and may have various embodiments, specific embodiments will be exemplified in the drawings and described in detail below.

In the drawings, the thicknesses of layers and regions are exaggerated for clarity, and also, an element or layer may be referred to as “on” or “on” another component or layer. What is referred to includes all cases in which another layer or other component is interposed in the middle as well as directly on top of another component or layer. Throughout the specification, like reference numerals refer to like elements in principle. In addition, components having the same function within the scope of the same idea shown in the drawings of each embodiment will be described using the same reference numerals.

If it is determined that a detailed description of a known function or configuration related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, numbers (eg, first, second, etc.) used in the description process of the present specification are only identification symbols for distinguishing one component from other components.

In addition, the suffixes "module" and "part" for components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have distinct meanings or roles by themselves.

When heat exchange occurs between objects with different temperatures, a relatively hot object can be seen to emit heat, and a relatively cold object can be viewed as a heat absorber. Thus, when an object is adjacent to a person's skin, when the arbitrary object is higher than a person's skin temperature, the arbitrary object can emit thermal energy, and when the arbitrary object is lower than a person's skin temperature If any of the above objects can absorb thermal energy. Accordingly, in the present specification, absorbing thermal energy from human skin by an arbitrary object may mean “applying cold heat to human skin”. In addition, the expression “cooling” described herein may mean lowering the object, which is the subject of cooling, to a temperature lower than the temperature before cooling.

In the present specification, skin whitening refers to any action that inhibits or prevents the deposition of melanin on the skin by inhibiting the synthesis of melanin. For example, skin whitening may include brightening the skin tone as a result of suppressing pigmentation of the skin by cooling the skin, removing spots on the skin, and the like.

According to an aspect of the present invention, there is provided a whitening mask for performing skin whitening, the lower part of which is in contact with the user's face, but a contact layer provided of a flexible material so as to be in close contact with the face, is disposed on the upper portion of the contact layer, and melts A phase change material that is prepared in a cooled state below a point and applies cooling heat to the skin of the user by using the latent heat at the melting point for at least the duration that the melting point is maintained through the contact layer. A mass that has a melting point below the target temperature at which pigmentation by melanocytes is suppressed, and maintains the duration longer than the first time required for suppression of the pigmentation and shorter than the second time at which damage to the skin occurs A cooling layer comprising - and an outer cover disposed on the cooling layer, provided in a shape corresponding to the user's face, and provided with an insulating material so that the cooling heat of the cooling layer does not leak to the outside A skin lightening mask may be provided.

In addition, the mass of the phase change material may be determined based on the target temperature, the melting point of the phase change material, latent heat at the melting point of the phase change material, and the area of the mask.

In addition, the mass (G) of the phase change material may be determined by Equations 1 and 2 below.

(수학식 1)

(Equation 1)

(수학식 2)

(Equation 2)

- Here, A is the area of the mask, ΔH is the latent heat at the melting point of the phase change material, τ is the duration, q _HC is the heat flux of the skin surface, Q _HC is the amount of heat emitted from the skin-

In addition, the phase change material may have a melting point in the range of -15 °C to 15 °C.

In addition, the target temperature may be in the range of 4 °C to 27 °C.

In addition, the first time period may be at least 5 seconds, and the second time period may be up to 300 seconds.

In addition, the first time may be a time required for the skin to maintain the target temperature for at least 4 seconds, and the second time may be a time required for the skin to maintain the target temperature for at most 120 seconds.

In addition, the phase change material may be composed of a phase change material microcapsules having the phase change material.

In addition, the cooling layer may include a Zion pigment that has a specific color at a temperature lower than the melting point and becomes transparent when the melting point is reached.

In addition, the cooling layer is disposed on the contact layer, the first cooling layer including the first phase change material having a first melting point, and the first cooling layer is disposed on the second melting point different from the first melting point It may be composed of a second cooling layer including a second phase change material having a.

In addition, the first melting point may be a temperature lower than the second melting point.

Also, a duration for which the first melting point is maintained may be different from a duration for which the second melting point is maintained.

In addition, a duration for which the first melting point is maintained may be shorter than a duration for which the second melting point is maintained.

In addition, the cooling layer may include a plurality of cooling regions including a phase change material having a different melting point, and the plurality of cooling regions may be arranged to respectively correspond to parts having a similar temperature among a plurality of parts constituting the face part. .

In addition, the plurality of cooling regions may include a phase change material having a lower melting point as the cooling region corresponding to a portion having a higher temperature among the plurality of portions constituting the face portion.

In addition, in the plurality of cooling areas, the longer the cooling area corresponding to a portion having a higher temperature among the plurality of portions constituting the face part, the longer the duration for which the melting point is maintained.

In addition, the contact layer may be coated with a coating solution containing a functional material for an incidental skin improvement effect.

Further comprising a temperature indicating device disposed in contact with the cooling layer to measure the temperature of the cooling layer, wherein the temperature indicating device is a temperature sensor for measuring the temperature of the cooling layer, communicating with the user's terminal Based on the communication unit and the temperature measured by the temperature sensor, the communication unit may include a control unit for controlling to give a notification about the detachment of the mask to the user's terminal through the communication unit.

According to another aspect of the present invention, there is provided a skin whitening device for performing skin whitening, the lower part of which is in contact with the user's body part, but a contact layer provided of a flexible material so as to be in close contact with the body part, and on the upper part of the contact layer A phase change material that is disposed and prepared in a cooled state below the melting point and applies cooling heat to the skin of the user by using the latent heat at the melting point for at least a duration that the melting point is maintained through the contact layer - the The phase change material has a melting point smaller than the target temperature at which pigmentation by melanocytes is suppressed, and the duration is longer than the first time required for suppression of the pigmentation and shorter than the second time at which damage to the skin occurs A skin whitening device comprising a cooling layer comprising - and an outer cover disposed on the cooling layer, and provided with an insulating material so that the cooling heat of the cooling layer does not leak to the outside can be provided. .

According to another aspect of the present invention, the lower part of the contact layer is in contact with the user's face and is provided with a flexible material, the melting point is disposed on the upper portion of the contact layer and is smaller than the target temperature at which pigmentation by melanocytes is suppressed. A skin whitening mask comprising: a cooling layer containing a phase change material having branches; cooling the cooling layer of the phase change material to below the melting point of the phase change material, placing the skin whitening mask on the user's face so that the lower part of the contact layer is in close contact with the face, at least through the contact layer By applying cooling heat to the user's skin using the latent heat at the melting point of the phase change material for a duration that the melting point is maintained at least longer than the first time required for suppression of the pigmentation, it is closely adhered to the lower part of the contact layer. A skin whitening method comprising the steps of inhibiting the pigmentation of the face and preventing damage to the face as the phase change of the phase change material is terminated before a second time elapses when the damage to the skin occurs can be provided.

1 is a diagram illustrating a state in which a user uses a skin whitening mask according to an embodiment of the present specification.

The skin whitening mask 10 may be used to apply cold heat to cool the user's skin, but cool the skin to a temperature at which pigmentation by melanocytes is suppressed. Specifically, the skin whitening mask 10 cools the melanocytes distributed on the user's skin by maintaining the user's skin at a low temperature for a certain period of time to reduce the amount of melanin generated from the melanocytes, and melanin transferred to the upper part of the skin It is possible to suppress pigmentation by reducing the amount of

Referring to FIG. 1 , a user may use the skin whitening mask 10 to maintain the skin at a low temperature for a certain period of time for skin whitening using a phase change material of the skin whitening mask 10 .

The skin whitening mask 10 may be used after being cooled in advance to below the melting point of the phase change material included in the mask 10 . The skin whitening mask 10 is preferably cooled to the temperature of the melting point of the phase change material contained therein. For example, if the melting point of the phase change material contained in the skin whitening mask 10 is minus 15 ° C, the user cools the skin whitening mask 10 to minus 15 ° C in advance, and then the skin whitening mask 10 can be used

In addition, in order to prevent skin damage caused by excessive cooling but to suppress pigmentation caused by melanocytes, the user whitens the skin for a duration in which at least the melting point of the phase change material contained in the cooled skin whitening mask 10 is maintained. A mask 10 may be used. For example, when the phase change material of the skin whitening mask 10 has a mass such that the melting point is maintained for 120 seconds, the user can use the skin whitening mask 10 for 120 seconds.

Hereinafter, a skin whitening mask 10 according to an embodiment of the present specification will be described with reference to FIGS. 2 to 4 .

2 is a perspective view of a skin whitening mask according to an embodiment of the present specification.

Referring to FIG. 2 , the skin whitening mask 10 may have a shape corresponding to the face part to be in close contact with the face part to evenly cool the user's skin, and the user's eye part and mouth part are vulnerable to low temperature, so that around the eyes And it may be provided in the form of a hole around the mouth. The skin whitening mask 10 may be provided in the form of a hole in the nose for convenience, such as to improve adhesion.

In addition, the skin whitening mask 10 may include a contact layer 20 , a cooling layer 30 , and an outer cover 40 .

The contact layer 20 may be provided with a flexible material so that the lower part of the contact layer is in contact with the user's face, and is in close contact with the face. In addition, the contact layer 20 may be provided with a material having high thermal conductivity in order to increase the user's skin cooling efficiency through the cooling layer 30 . For example, the contact layer 20 may be made of a material such as cotton, bio-cellulose, or hydrogel.

In addition, the contact layer 20 may be provided with a thin thickness so as to apply cooling heat to the skin of the user of the cooling layer 30 well. For example, the contact layer 20 may be provided with a thickness of 1 cm or less.

In addition, the contact layer 20 may be provided in a shape corresponding to the user's face. Since the user's eyes and mouth are vulnerable to low temperatures, the contact layer 20 may be provided in the form of a hole around the eyes and around the mouth. The contact layer 20 may be provided in the form of a hole in the nose for convenience, such as to improve adhesion.

In addition, the contact layer 20 may be provided with a viscous liquid to improve adhesion with the skin. For example, the contact layer 20 may be provided in a wetted state with a viscous emulsion.

In addition, in the contact layer 20 , various functional materials may be accommodated in order to obtain an incidental skin improvement effect. For example, the contact layer 20 may be coated with a coating liquid including a functional material.

Functional substances are substances that have a skin improvement effect, for example, ingredients that help block UV rays, antioxidant ingredients, skin conditioning ingredients, antibacterial ingredients, whitening ingredients (arbutin, niacinamide, ascoglucoside, etc.), pore reduction improving ingredients, It may contain wrinkle improvement ingredients (retinol, adenosine, etc.), vitality filling ingredients, burning sensation prevention ingredients, pain reducing ingredients, and the like. In addition, the functional material is at least one of an ingredient that helps block UV rays, an antioxidant ingredient, a skin conditioning ingredient, an antibacterial ingredient, a whitening ingredient, a pore reduction ingredient, an wrinkle improvement ingredient, a vitality filling ingredient, a burning sensation ingredient, and a pain reducing ingredient Or it may be composed of a mixture of two or more.

In addition, the contact layer 20 may be provided in various forms. The contact layer 20 may be provided to be fixedly disposed on the skin whitening mask 10 , but may be provided to be temporarily disposed between the cooling layer 30 and the user's skin when the skin whitening mask 10 is worn. That is, the contact layer 20 may be independently configured in a structure that is detachable from the skin whitening mask 10 , and may be separated from the mask 10 . For example, the contact layer 20 may be provided as an independent sheet disposed between the cooling layer 30 and the user's skin when the skin whitening mask 10 is worn. For another example, the contact layer 20 may be provided in the form of an independent gel that is applied and disposed between the cooling layer 30 and the user's skin when the skin whitening mask 10 is worn.

The functional material may be a material whose function is more activated at a low temperature. For example, the functional material is a whitening functional material, and may be a material in which a whitening effect is higher at a low temperature (a whitening function is more activated). By way of example and not limitation, functional substances include resorcinol and similar derivatives (hexyl resorcinol: Hexyl resorconol, butyl resorcinol: Butyl resorcinol, phenylethyl resorcinol: Phenylethyl resorcinol, resorcinol acetate: resorcinol acetate, and other similar derivatives), and may be composed of one or a mixture of two or more of these substances.

For another example, the functional material is a whitening functional material, and may be a material that can be used with an increased effective concentration by further reducing irritation (eg, irritation caused by cooling) at a low temperature. By way of example and not limitation, functional substances include resorcinol and similar derivatives (hexyl resorcinol: Hexyl resorconol, butyl resorcinol: Butyl resorcinol, phenylethyl resorcinol: Phenylethyl resorcinol, resorcinol acetate: Resorcinol acetate and other similar derivatives), Niacinamide and its containing composition, Magnesium ascorbylphosphate and its containing composition, Ascorbyl glucoside and its containing composition, Ascorbyltetraisopalmitate (Ascorbyl) Tetraisopalmitate) / Dipalmitate and containing compositions, Arbutin and containing compositions, α-Bisabolol and containing compositions, Ethyl Ascorbyl Ether and containing compositions, polyphenols (Polyphenol) derivatives and containing compositions, L-Glutathione and containing compositions, Tranexamic Acid and containing compositions, 4-Methoxysalicylic acid KCl, derivatives and containing compositions, Gly Glycyrrhizine and containing compositions, azelaic acid, azelaic acid derivatives (eg azeloyl diglycine) and containing compositions, nicotinamide, nicotinamide derivatives and containing compositions, resveratrol, resveratrol derivatives and Containing composition, Glycyrrhiza flavonoids, ellagic acid and containing composition, papain and containing composition, mandelic acid, mandelic acid derivative and containing composition, heptapeptide -1) and the containing composition, kojic acid, kojic acid Derivatives and containing compositions, plant extracts and containing compositions, which contain all or part of the following components: Jasmine extract, mulberry extract, mulberry extract, licorice extract, ginseng extract, sage militari lyza extract, corn extract, chrysanthemum extract, bark root extract, thyme extract, white fresh root extract, polygonal extract, magnolia tree extract, angelica root extract, angelica root extract, Phyllanthus emblica (fruit) extract, citrus and citrus extract, and the like, one of these substances or It may consist of a mixture of two or more.

The cooling layer 30 is disposed on top of the contact layer 20, is prepared in a cooled state below the melting point, and uses the latent heat at the melting point for at least the duration that the melting point is maintained through the contact layer 20. It may include a phase change material that applies cooling to the user's skin.

A phase change material has a large latent heat, so it is a material that can store and release a large amount of energy during phase change. A substance that accumulates or releases heat through the process of changing from one state to another, such as from a solid to a liquid state or from a liquid to a solid state. A large amount of latent heat is released while changing, and when the external temperature rises above the intrinsic melting point of the phase change material, a large amount of latent heat is absorbed as the phase changes. Therefore, since the phase change material absorbs or releases a lot of heat as the state of the material changes, the temperature corresponding to the melting point can be maintained constant for a longer period of time compared to other materials. That is, the cooling layer 30 may apply cooling heat to the user's skin using the melting point of the phase change material as a cooling temperature until the phase change of the included phase change material is completed.

In addition, the phase change material included in the cooling layer 30 may have a melting point below a target temperature at which pigmentation by melanocytes is suppressed. The target temperature is a skin temperature to be reached through cooling of the skin, and may mean the temperature of the user's skin after a duration for which the melting point of the phase change material is maintained.

The cooling layer 30 may apply cooling heat to the skin through a phase change material having a melting point below a target temperature to cool the user's skin to a target temperature. For example, the target temperature may be a temperature in the range of 4°C to 27°C.

The target temperature may be a temperature of 27°C or lower. Since the skin whitening effect due to cooling of the skin increases as the temperature of the skin is maintained at a lower temperature, the target temperature may be a temperature of 27°C or less for the skin whitening effect due to cooling of the skin to occur substantially.

Also, the target temperature may be a temperature of 4°C or higher. The actual freezing of human skin tissue does not occur before the skin temperature is -4°C to -10°C, but when the skin temperature falls below 4°C, tissue damage may occur due to ischemia and thrombus in small blood vessels. Therefore, the target temperature may be a temperature of 4°C or higher to prevent skin damage due to cooling of the skin.

In addition, the cooling layer 30 may include a phase change material having a melting point of -15°C to 15°C to provide a cooling temperature that inhibits the activity of melanocytes but prevents skin damage. For example, the cooling layer 30 may include a phase change material such as _{n-Dodecane, C 14} H ₃₀ , or C ₁₂ H _{26 .}

In addition, the cooling layer 30 may include a phase change material having a melting point that provides a cooling temperature to a temperature at which the functional material accommodated in the contact layer 10 is activated. For example, the cooling layer 30 may include a phase change material having a melting point at a temperature at which the activity of the functional material accommodated in the contact layer 10 is greater than or equal to a specific value.

However, the cooling temperature of the cooling layer 30 does not need to be limited to the above description, and the cooling temperature may vary depending on circumstances, such as a temperature within a temperature range of -30°C to 35°C. Also, the target temperature is not necessarily limited to the above description, and the target temperature may vary depending on circumstances, such as being a temperature of -10°C to 35°C.

Hereinafter, the mass of the phase change material included in the cooling layer 30 will be described.

If the user's skin is not sufficiently cooled through the skin whitening mask 10, pigmentation by melanocytes may not be suppressed, and if the user's skin is excessively cooled, tissue damage due to skin freezing may occur.

Accordingly, the phase change material included in the cooling layer 30 to prevent skin damage due to cooling for the duration that the melting point of the phase change material is maintained, but to suppress pigmentation by melanocytes, the melting point is maintained for the duration may have a mass that maintains it longer than the first time required for suppression of pigmentation and shorter than the second time during which damage to the skin occurs. For example, the phase change material included in the cooling layer 30 may have a mass such that the duration for which the melting point is maintained is 5 seconds to 300 seconds. For another example, the phase change material included in the cooling layer 30 may have a mass such that the duration for which the melting point is maintained is a time required for the user's skin to maintain the target temperature for 4 seconds to 120 seconds. For another example, the phase change material included in the cooling layer 30 may have a mass such that the duration for which the melting point is maintained is from 5 seconds required for suppression of pigmentation to 900 seconds with the possibility of microscopic damage to the skin. .

The first time may mean the minimum time required for suppression of pigmentation due to cooling of melanocytes, and when the skin is cooled for a shorter time than the first time, sufficient cooling of melanocytes is not achieved, so that pigmentation will be suppressed. can't For example, the first time period may be at least 5 seconds for a skin lightening effect due to cooling of the skin to substantially occur.

Also, the first time period may increase as the melting point of the phase change material included in the cooling layer 30 increases. For example, the first time period may be longer when the melting point of the phase change material included in the cooling layer 30 is 5°C than when the melting point is -15°C.

In addition, the first time may be obtained as a time during which the user's skin maintains the target temperature. For example, the first time may be a time required for the user's skin to maintain the target temperature for at least 4 seconds in order for a skin whitening effect due to cooling of the skin to substantially occur.

The second time may mean a time at which skin damage starts to occur due to cooling of the skin, and when the skin is cooled for a longer time than the second time, damage to the skin may occur. For example, the second time period may be up to 300 seconds to prevent tissue damage due to ischemia and thrombus in small blood vessels caused by cooling the skin for a long time. However, the second time period may vary depending on circumstances, such as up to 900 seconds, which is a time period in which direct damage to the skin occurs as well as a possibility of microscopic damage to the skin by cooling the skin for a long time.

In addition, the second time period may be longer as the melting point of the phase change material included in the cooling layer 30 increases. For example, the second time period may be longer when the melting point of the phase change material included in the cooling layer 30 is 5°C than when the melting point is -15°C.

In addition, the second time may be obtained as a time during which the user's skin maintains the target temperature. For example, the second time period may be a time required for the user's skin to maintain the target temperature for up to 120 seconds in order to prevent tissue damage due to ischemia and thrombus in small blood vessels caused by cooling the skin for a long time.

The cooling duration of the cooling layer 30 does not need to be limited to the above description, and may be variously determined.

According to an embodiment, the mass of the phase change material included in the cooling layer 30 may be determined based on the target temperature, the melting point of the phase change material, the latent heat at the melting point of the phase change material, and the area of the mask 10 . have.

A method of determining the mass of the phase change material will be described in detail below with reference to FIG. 3 . Specifically, the mass (G) of the phase change material can be obtained by the following calculation formula.

(τ _: duration of maintaining the melting point, q _HC : Heat flux on the skin surface, Q _HC : amount of heat released from the skin)

3 is a graph showing changes in skin temperature with time when skin cooling is performed through a cooling layer containing water having a melting point of 0 °C.

Referring to FIG. 3 , when the melting point is maintained for a duration of 177 seconds and the target temperature is 5.5 °C, the heat flux of the skin at the initial temperature is 11.3 kW/m ² , and the heat flux of the skin at the target temperature is 0.95 kW/ becomes m ^{2 .} Based on this, the mean value of the heat flux of the skin for the duration for which the melting point is maintained can be obtained, and the amount of heat emitted from the skin for the duration for which the melting point is maintained through Equation 2 can be calculated. As a result of the calculation, the calculated value of the amount of heat emitted from the skin is about 410 KJ/m ² .

When the skin whitening mask 10 is used for men, 410 KJ/m2 calculated as the amount of heat emitted from the skin in Equation 1 _{is substituted for Q HC} ^{, and 419 cm 2} , which is the average face area of Korean men, is used as the skin whitening mask (10). ) and substituting it for A, and substituting 333.6KJ/kg, the latent heat at the melting point of water, into ΔH, the mass G of water is determined to be 0.515kg.

When the skin whitening mask (10) is used for women, 410 KJ/m2 calculated as the amount of heat emitted from the skin in Equation 1 _{is substituted for Q HC} ^{, and 371 cm 2} , which is the average face area of Korean women, is used as the skin whitening mask (10). ) and substituting it for A, and substituting 333.6 KJ/kg, the latent heat at the melting point of water, into ΔH, the mass G of water is determined to be 0.456 kg.

sec), 상변화물질의 녹는점에서의 잠열(ΔH, KJ/g) 및 마스크(10)의 면적(A, m²)에 기초하여 결정될 수 있다. 구체적으로 하기와 같은 수학식 3에 따라 G가 결정될 수 있다. In addition, the mass of the phase change material included in the cooling layer 30 may be determined by another method. For example, the mass (G) of the phase change material included in the cooling layer 30 is the average cooling rate (Q, KJ/m ^{2 ) for the duration that the melting point is maintained.}

sec), the latent heat (ΔH, KJ/g) at the melting point of the phase change material, and the area (A, m ² ) of the mask 10 may be determined. Specifically, G may be determined according to Equation 3 below.

(τ _: duration of maintaining the melting point, Q: average cooling rate, A: area of the mask 10, ΔH: latent heat at the melting point of the phase change material)

It should be noted that the method of determining the mass of the phase change material included in the cooling layer 30 is not limited to the above-described method and may be performed in various ways.

The outer cover 40 is disposed on the cooling layer 30 , and may be provided as a heat insulating material so that the cooling heat of the cooling layer 30 does not leak to the outside. In addition, the outer cover 40 may be made of a flexible material to be bent well in response to the user's face. For example, the outer cover 40 may be made of a material such as plastic, Styrofoam (EPS, Expanded Poly Styrene), expanded polypropylene (EPP, expanded polypropylene), polyurethane (Poly-Urethane), airgel, and the like.

In addition, the outer cover 40 may be provided to completely cover the remaining surface of the cooling layer 30 except for the surface in contact with the contact layer 20 so as to completely block heat exchange with the outside.

In addition, the outer cover 40 may be provided in a shape corresponding to the user's face. For example, the outer cover 40 has a shape corresponding to the face, and since the user's eyes and mouth are vulnerable to low temperatures, it may be provided in the form of a hole around the eyes and around the mouth. The outer cover 40 may be provided in the form of a hole in the nose for convenience, such as improved adhesion.

Through the outer cover 40, heat transfer from the external environment to the inside of the skin whitening mask 10 may prevent the cooling layer 30 from completing the phase change earlier than the calculated duration.

On the other hand, although not shown in the drawings, the skin whitening mask 10 according to an embodiment of the present specification is a strap or band that provides tension so as to sufficiently closely contact the skin when the user wears the skin whitening mask 10 . This may additionally be provided.

However, it is not limited to the above-described configuration, and the skin lightening mask 10 may be a skin lightening mask 10 having more or less configuration than the above configuration, and each configuration is not limited to the above description.

4 is a cross-sectional view of a skin whitening mask according to an embodiment of the present specification.

Referring to FIG. 4 , the cooling layer 30 may be disposed under the outer cover 40 , and disposed above the contact layer 20 . When the user wears the skin whitening mask 10 , the contact layer 20 may be in direct contact with the user's skin, and the outer cover 40 may be exposed to the external environment.

In addition, the cooling layer 30 may include a phase change material microcapsule (PCM microcapsule, 31). The phase change material included in the cooling layer 30 is prepared in a state cooled to below the melting point, so that the cooling layer 30 maintains flexibility even when the phase change material becomes a solid state. can be

In addition, the cooling layer 30 may include a heat transfer member 32 made of a material having high thermal conductivity in order to efficiently apply cooling heat. For example, the cooling layer 30 may include a heat transfer member 32 made of a metal material having high thermal conductivity, such as aluminum.

The cooling layer 30 may include a heat transfer member 32 having various shapes. For example, the cooling layer 30 may include a heat transfer member 32 having a shape penetrating the cooling layer 30 up and down, a shape of a thin and long wire, a shape of a small bead, and the like.

Hereinafter, the skin whitening mask 10 having the cooling layers 30a and 30b having a two-layer structure will be described in detail.

If the skin is cooled only through a phase change material having a low melting point, the skin temperature can be rapidly lowered, but if the skin is cooled for a long time, the user may feel pain and skin damage may occur, and only through the phase change material having a high melting point In the case of cooling the skin, the mass of the phase change material increases, so that the miniaturization does not occur, and the skin cooling does not occur quickly. The skin whitening mask 10 according to an embodiment includes cooling layers 30a and 30b having a two-layer structure including different phase change materials in order to efficiently whiten the skin by cooling the user's skin under two cooling conditions. can do.

5 is a cross-sectional view of a mask having a cooling layer having a two-layer structure according to an embodiment of the present specification.

Referring to FIG. 5 , the skin whitening mask 10 may include a first cooling layer 30a and a second cooling layer 30b.

The cooling layer 30 is disposed on the contact layer 20 and is disposed on the first cooling layer 30a and the first cooling layer 30a including the first phase change material having a first melting point, and The second cooling layer 30b may include a second phase change material having a second melting point different from one melting point. For example, the cooling layer 30 may include a first cooling layer 30a including a first phase change material having a first melting point of 0°C and a second phase having a second melting point of minus 15°C. It may be composed of a second cooling layer 30b including a changeable material.

Also, the duration for which the first melting point of the first cooling layer 30a is maintained may be different from the duration for which the second melting point of the second cooling layer 30b is maintained. That is, the first phase change material and the second phase change material may have different masses such that a duration for which the first melting point is maintained and a duration for which the second melting point is maintained are different. For example, the duration for which the first melting point of the first cooling layer 30a is maintained may be 50 seconds, and the duration for which the second melting point of the second cooling layer 30b is maintained may be 30 seconds.

According to one embodiment, in the initial stage of skin cooling, the first cooling layer 30a is cooled to the first melting point to rapidly lower the skin temperature, and to cool the skin to a temperature higher than the first melting point to prevent skin damage. The first melting point of the first phase change material of ) may be a temperature lower than the second melting point of the second phase change material of the second cooling layer 30b. For example, the first cooling layer 30a includes a first phase change material having a first melting point of minus 15°C, and the second cooling layer 30b has a second melting point of 5°C. A second phase change material may be included.

According to an embodiment, the duration for which the first melting point of the first cooling layer 30a is maintained may be shorter than the duration for which the second melting point of the second cooling layer 30b is maintained. That is, the first phase change material and the second phase change material may have different masses such that the duration for which the first melting point is maintained is short, and the duration for which the second melting point is maintained is short. For example, the duration for which the first melting point of the first cooling layer 30a is maintained may be 30 seconds, and the duration for which the second melting point of the second cooling layer 30b is maintained may be 60 seconds.

In addition, the cooling layer 30 may be provided as a cooling layer 30 having a multi-layer structure as well as a two-layer structure.

6 is a graph showing the temperature over time of the skin whitening mask having a cooling layer of a two-layer structure according to an embodiment of the present specification.

Referring to FIG. 6 , the first melting point of the first phase change material of the first cooling layer 30a is a temperature lower than the second melting point of the second phase change material of the second cooling layer 30b, and the first cooling The duration for maintaining the first melting point of the layer 30a is shorter than the duration for maintaining the second melting point of the second cooling layer 30b. It can be seen that the temperature change with time of the skin whitening mask 10 is shorter.

The mask 10 prepared by being cooled to a temperature below the first melting point in advance receives heat from the outside or the user's skin and reaches T1 (for example, -10 °C), which is the first melting point of the first phase change material. can do.

When worn by the user, the mask 10 may cool the skin from T1, which is the first melting point of the first phase change material, to t1 (eg, 15 seconds), which is the duration for which the first melting point is maintained. Due to the low first melting point, the temperature of the user's skin may rapidly decrease during time t1.

After t1 time elapses and the phase change of the first phase change material is completed, the temperature of the mask 10 increases due to heat emitted from the user's skin, and the second melting point of the second phase change material is T2 (for example, 10° C) can be reached.

After reaching the temperature T2 , the mask 10 may cool the skin for a duration t2 (eg, 80 seconds) that is a duration at which the second melting point is maintained at the second melting point T2 (eg, 80 seconds). Due to the second melting point, which is a temperature higher than the first melting point, the temperature of the user's skin is not lower than the second melting point during time t2 to prevent damage to the skin but to cool the skin for a longer period of time.

After the phase change of the second phase change material of the mask 10 is completed, the user may stop wearing the mask 10 , and the temperature of the mask 10 is continuously increased by the external environment.

As described above, the skin whitening mask 10 can rapidly lower the skin temperature by cooling the skin to the first melting point at the initial stage of skin cooling. After the duration for which the first melting point is maintained, the skin whitening mask 10 cools the skin to a second melting point, which is a temperature higher than the first melting point, to cool the skin for a long time to suppress pigmentation, but the temperature at which the skin is damaged This will prevent the skin from cooling down.

Hereinafter, a skin whitening mask 10 including a cooling layer 30 composed of a plurality of cooling regions will be described.

Since the plurality of parts constituting the face of a person have different skin characteristics, it is necessary to perform different cooling for each part. For example, the conditions under which skin damage or pigmentation suppression occurs may be different for each part of the body.

Accordingly, the skin whitening mask 10 that cools each part constituting the face of a person differently according to the characteristics of the skin may be provided.

According to an embodiment, the skin whitening mask 10 may perform skin cooling differently for each part constituting the face of a person through the cooling layer 30 composed of a plurality of cooling regions.

7 is a view showing a cooling layer composed of a plurality of cooling regions according to an embodiment of the present specification.

Referring to FIG. 7 , the cooling layer 30 may include a plurality of cooling regions 34a , 34b , 34c , and 34d to cool the user's skin under different cooling conditions according to the characteristics of the skin. Each of the cooling regions 34a, 34b, 34c, and 34d may include a phase change material having a different melting point, respectively. For example, the first cooling region 34a of the cooling layer 30 may include a first phase change material, and the second cooling region 34b of the cooling layer 30 may include a second phase change material. and melting points of the first phase change material and the second phase change material may be different from each other.

In addition, each phase change material included in the plurality of cooling regions 34a , 34b , 34c , and 34d may have a mass such that the phase change material included in each cooling region maintains a melting point for a different duration.

In addition, in the plurality of cooling regions 34a, 34b, 34c, and 34d, heat exchange occurs between the respective cooling regions to prevent the temperature of each cooling region from becoming the same. It can be sealed or insulated with a material with low thermal conductivity.

According to an embodiment, a plurality of cooling regions 34a, 34b, 34c, and 34d to perform skin cooling under different cooling conditions for each part having a similar skin temperature among a plurality of parts constituting the facial part based on the temperature distribution of the facial part. The silver may be disposed to respectively correspond to portions having a similar temperature among a plurality of portions constituting the face portion.

Referring to FIG. 7 , the cooling layer 30 of the skin whitening mask 10 includes a first cooling region 34a corresponding to the forehead and chin, a second cooling region 34b corresponding to both sides of the nose, and both sides. It may be composed of a third cooling region 34c corresponding to the cheek portion and a fourth cooling region 34d corresponding to the nose portion.

Unlike the internal temperature of the human skin, the temperature of about 32-34°C is distributed instead of 36-37°C, and the temperature distribution of each part of the human face differs from person to person. The temperature distribution is symmetrical in the shape of blood vessels, and it can be divided into several parts with similar temperatures depending on the temperature. The forehead part has a lot of blood vessels and the heat cannot escape because of the hair, so the temperature is high, and the chin part has a high temperature because there are a lot of blood vessels around it. Both sides of the nose have relatively high blood vessels, so the temperature is high, and the cheeks are relatively low because there are not many blood vessels. The nose part has a lower temperature than other parts of the face due to the breathing of outside air. That is, in general, the skin temperature is measured high in the order of the forehead, chin, sides of the nose, cheeks, and nose, and depending on the temperature, the forehead, chin, sides of the nose, both cheeks, It can be divided into the nose part.

For example, the cooling layer 30 of the skin whitening mask 10 is located in the first cooling region 34a corresponding to the forehead and chin, where the skin temperature is the highest, and then on both sides of the nose where the skin temperature is high. Consists of a corresponding second cooling region 34b, a third cooling region 34c corresponding to both cheek portions having the next highest skin temperature, and a fourth cooling region 34d corresponding to a nose portion having the lowest skin temperature. can be

The plurality of cooling regions 34a , 34b , 34c , and 34d may include a phase change material having a lower melting point as the cooling region 34 corresponding to a portion having a higher temperature among a plurality of portions constituting the face portion. For example, the first cooling region 34a corresponding to the forehead and chin having a high temperature may include a first phase change material having a melting point of −15° C. The fourth cooling region 34d may include a fourth phase change material having a melting point of 0°C.

In addition, in the plurality of cooling regions 34a , 34b , 34c , and 34d , the duration for which the melting point is maintained may be longer as the cooling region 34 corresponding to a portion having a higher temperature among the plurality of portions constituting the face part. That is, the plurality of cooling regions 34a , 34b , 34c , and 34d are each phase of the mass that increases the duration for which the melting point is maintained as the cooling region 34 corresponding to a portion having a higher temperature among the plurality of parts constituting the face part. It may contain a change substance. For example, the first cooling region 34a corresponding to the high-temperature chin and forehead portions may include a mass of the first phase change material such that the melting point is maintained for a duration of 120 seconds, and the low-temperature nose amount The second cooling region 34b corresponding to the side portion may include the second phase change material having a mass such that the melting point is maintained for 60 seconds.

However, the cooling layer 30 having a plurality of cooling regions described above is not limited thereto, and the cooling layer 30 may be a cooling layer 30 having more or less cooling regions than the plurality of cooling regions described above, Each cooling region is not limited to the above description.

Hereinafter, the skin whitening mask 10 through which the user can know the use temperature of the skin whitening mask 10 will be described.

The cooling layer 30 may be pre-cooled and prepared in a cooled state to a temperature excessively lower than the melting point of the included phase change material. When cooling heat is applied to the skin through the cooling layer 30 cooled to a temperature excessively lower than the melting point of the phase change material, skin damage due to freezing of the skin, etc. may occur. Therefore, according to an embodiment, the skin whitening mask 10 indicating whether the temperature of the cooling layer 30 has reached the melting point of the included phase change material may be provided.

8 is a cross-sectional view of a skin whitening mask including a reversible Zion pigment according to an embodiment of the present specification.

Referring to FIG. 8 , the cooling layer 30 may include a Zion pigment to generate a specific color when the temperature is lower than the melting point of the phase change material included while being transparent at room temperature.

Zion pigments (thermochromic pigments) are temperature-changing pigments or heat-sensitive pigments that change color according to temperature, and are pigments that have an intrinsic color below a reference temperature and become transparent above the reference temperature. Zion pigments largely start to lose color as they reach the reference temperature, disappear completely when the temperature reaches the reference temperature, and are divided into reversible Zion pigments and non-reversible Zion pigments depending on whether they return to their original color when the temperature goes down. , In one embodiment of the present specification, a reversible Zion pigment may be used for repeated use. As for the Zion pigment, various types of Zion pigments that change color at a reference temperature between -15°C and 70°C have been developed and sold, and the temperature at which the color of the corresponding pigment changes is usually in the range of 2 to 10°C before and after the reference temperature.

The cooling layer 30 uses the melting point of the phase change material as a reference temperature, and when it reaches a temperature lower than the melting point, a specific color is generated, and when it reaches a temperature higher than the melting point, the color disappears and becomes transparent. can do. For example, the cooling layer 30 may include the reversible Zion pigment 35 that changes color based on -15°C when the melting point of the included phase change material is -15°C.

In addition, the cooling layer 30 and the phase change material may be transparent so that the color change of the reversible Zion pigment 35 can be easily confirmed with the naked eye.

In addition, the cooling layer 30 may be provided in a form in which one surface not including the reversible Zion pigment 35 is coated with the reversible Zion pigment 35 .

In addition, the reversible Zion pigment 35 may be included in the contact layer 20 , the cooling layer 30 and/or the outer cover 40 , rather than being included only in the cooling layer 30 .

9 is a view showing a skin whitening mask including a temperature indicating device according to an embodiment of the present specification. 10 is a cross-sectional view of a skin whitening mask including a temperature indicating device according to an embodiment of the present specification.

9 and 10 , the skin whitening mask 10 includes a device (hereinafter, a temperature indicating device, 50) that measures the temperature of the cooling layer 30 and notifies the user based on the measured temperature can do.

Referring to FIG. 9 , the temperature indicating device 50 may be disposed to be exposed on the skin whitening mask 10 , but may also be disposed inside the mask 10 . For example, the temperature indicating device 50 may be disposed in the space formed in the outer cover 40 , but may be disposed between the outer cover 40 and the cooling layer 30 .

Also, the temperature indicating device 50 may be disposed at any position of the skin whitening mask 10 . For example, the temperature indicating device 50 may be disposed in various positions, such as a chin part, a forehead part, as well as a cheek part.

Also, the temperature indicating device 50 may be disposed such that the temperature sensor 51 is in contact with the cooling layer 30 . For example, the temperature indicating device 50 is disposed to be in contact with the upper and/or side surfaces of the cooling layer 30 , and the temperature sensor 51 is disposed on the surface in contact with the cooling layer 30 of the temperature indicating device 50 . can be placed.

In addition, the temperature indicating device 50 may be provided while being fixedly disposed on the mask 10 , but may be provided to be detachably attached. For example, the temperature indicating device 50 is detached in the process of pre-cooling the mask 10, and is mounted on the outer cover 40 after cooling of the mask 10 is completed. Inside the housing (not shown). can be placed.

11 is a diagram illustrating a configuration diagram of a temperature indicating device according to an embodiment of the present specification.

Referring to FIG. 11 , the temperature indicating device 50 may include a temperature sensor 51 , a control unit 52 , an output unit 53 , a communication unit 54 , and a battery 55 .

The temperature sensor 51 may be disposed to contact the cooling layer 30 to measure the temperature of the cooling layer 30 . For example, the temperature sensor 51 may be a temperature measuring sensor such as a liquid expansion temperature sensor, a state change temperature sensor, a thermocouple, or an RTD.

The controller 52 may control the overall temperature indicating device 50 or process and calculate various types of information.

In addition, the control unit 52 may control to give a notification about the detachment of the mask 10 to the user based on the temperature measured by the temperature sensor 51 .

The controller 52 may give a notification when the temperature measured by the temperature sensor 51 reaches the melting point of the phase change material at a temperature lower than the melting point of the phase change material. That is, when the temperature measured by the temperature sensor 51 reaches the melting point of the phase change material, the controller 52 may determine that the mask 10 is used. For example, when the temperature measured by the temperature sensor 51 reaches the melting point of the phase change material, the controller 52 may control to output a voice through the output unit 53 . As another example, when the temperature measured by the temperature sensor 51 reaches the melting point of the phase change material, the controller 52 may transmit a notification message to the user's terminal through the communication unit 54 .

In addition, the controller 52 may give a notification when the temperature measured by the temperature sensor 51 after the user wears the mask 10 is higher than the melting point of the phase change material. That is, when the temperature measured by the temperature sensor is higher than the melting point of the phase change material, the controller 52 may determine to end the use of the mask 10 . For example, when the temperature measured by the temperature sensor 51 is higher than the melting point of the phase change material, the controller 52 may control to output a voice through the output unit 53 . As another example, when the temperature measured by the temperature sensor 51 is higher than the melting point of the phase change material, the controller 52 may transmit a notification message to the user's terminal through the communication unit 54 .

In addition, the control unit 52 may be implemented as software, hardware, or a combination thereof. For example, in terms of hardware, the controller 52 may be implemented as a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a semiconductor chip, or other various types of electronic circuits. , software-wise, the control unit 52 may be implemented in a logic program executed according to the above-described hardware or in various computer languages.

The output unit 53 may output various notifications to the user. The notification may be delivered to the user visually, and there is no limitation in the method of expression, such as sound, etc. When received, the fact may be output as audiovisual information and/or vibration. The output unit 53 may be an LCD, OLED, or AMOLED display that outputs visual information, and may be a speaker and a buzzer that output auditory information.

In addition, the output unit 53 may generate a vibration to be applied to the user's skin. For example, the output unit 53 may apply vibration to the user's skin by generating vibration to reduce pain caused by cooling. In addition, the output unit 53 may apply vibration to the user's skin by generating a vibration for massage of the user's skin. The output unit 53 may be provided as a vibrator outputting vibration, a vibration motor, or the like.

The communication unit 54 may communicate with the user's terminal and transmit various notifications to the user's terminal. For example, the communication unit 54 may transmit a notification message to the user's terminal through the communication unit 54 when the temperature measured by the temperature sensor 51 reaches the melting point of the phase change material, and the temperature sensor 51 . ), when the measured temperature is higher than the melting point of the phase change material, a notification message may be transmitted to the user's terminal.

Communication unit 54 is an infrared module, NFC (Near Field Communication, near field communication) module, BLE (Bluetooth Low Energy), Bluetooth (Bluetooth) module, Wi-Fi (Wi-Fi) module, mobile communication including 3G, 4G or 5G It may include a wired/wireless module that transmits data through a module and other various communication standards.

The battery 55 may supply power to the temperature indicating device 50 . The battery 55 may be installed to be accommodated in the temperature indicating device 50 .

In addition, although not shown in the drawing, the temperature indicating device 50 may be connected to an external power source through a power supply unit instead of the battery 55 to receive power from the outside.

However, it is not limited to the above-described configuration, and the temperature indicating device 50 may be a temperature indicating device 50 having more or fewer configurations than the configuration, and each configuration is not limited to the above description.

Hereinafter, the skin whitening device 11 used for various body parts will be described.

This specification describes only the application of the skin whitening mask 10 according to an embodiment to the face for convenience, but the skin whitening mask 10 is not only applied to the face but also to the hands, thighs, ankles, buttocks, neck, It can be provided and used as the skin whitening device 11 in various body parts, such as the clavicle, arm, and chest. The shape of the skin whitening device 11 may be variously provided in a shape corresponding to each body part.

12 is a front view of a skin whitening device according to an embodiment of the present specification.

Referring to FIG. 12 , the skin whitening device 11 may be provided in the form of a pad as a basic form for adhering to various body parts of the user. Although only the skin whitening device 11 provided in the form of a pad is illustrated in FIG. 12 , the skin whitening device 11 may be provided in various forms. For example, the skin whitening device 11 may be provided in a shape corresponding to the various body parts to be in close contact with the user's various body parts to evenly cool the user's skin.

In addition, the skin whitening device 11 may include a contact layer 20 , a cooling layer 30 , and an outer cover 40 .

The contact layer 20 may be provided with a flexible material so that the lower part of the contact layer is in contact with the user's body part, and is in close contact with the user's body part. Since the contact layer 20 has been described above, a detailed description thereof will be omitted.

The cooling layer 30 is disposed on top of the contact layer 20, is prepared in a state cooled below the melting point, and uses latent heat at the melting point for at least the duration that the melting point is maintained through the contact layer 20. It may include a phase change material that applies cooling to the user's skin. The phase change material has a melting point below the target temperature at which pigmentation by melanocytes is suppressed, and the duration is longer than the first time required for suppression of pigmentation and shorter than the second time at which damage to the skin occurs It can have a mass Since the cooling layer 30 has been described above, a detailed description thereof will be omitted.

The outer cover 40 is disposed on the cooling layer 30 , and may be provided as a heat insulating material so that the cooling heat of the cooling layer 30 does not leak to the outside. In addition, the outer cover 40 may be provided in a shape corresponding to the user's body part. Since the outer cover 40 has been described above, a detailed description thereof will be omitted.

On the other hand, although not shown in the drawings, the skin whitening device 11 according to an embodiment of the present specification provides tension such as a strap or a band that provides tension so as to sufficiently closely contact the skin when the user uses the skin whitening device 11 . This may additionally be provided.

However, it is not limited to the above-described configuration, and the skin whitening device 11 may be a skin whitening device 11 having more or fewer configurations than the above configuration, and each configuration is not limited to the above-described description.

13 is a diagram illustrating a state in which the skin whitening device according to an embodiment of the present specification is used on a user's upper body.

Referring to FIG. 13 , the skin whitening device 11 is provided in the form of a pad and can be used on the user's upper body.

14 is a diagram illustrating a state in which the skin whitening device according to an embodiment of the present specification is used on a user's wrist.

Referring to FIG. 14 , the skin whitening device 11 is provided in the form of a band corresponding to the wrist and can be used on the user's wrist.

15 is a diagram illustrating a state in which the skin whitening device according to an embodiment of the present specification is used on a user's foot.

Referring to FIG. 15 , the skin whitening device 11 is provided in a shape corresponding to the foot area and may be used for the user's foot area.

16 is a flowchart of a skin whitening method using a skin whitening mask according to an embodiment of the present specification.

Referring to FIG. 16 , the skin whitening method includes a step of cooling below the melting point of a phase change material (S100), a step of positioning on the user's face (S110), a step of suppressing pigmentation of the face (S120), and the facial It may include a step of preventing damage (S130).

A step of cooling the skin whitening mask 10 below the melting point of the phase change material may be performed. (S100)

The skin whitening mask 10 has a lower portion in contact with the user's face and is disposed on the contact layer 20 provided of a flexible material and the contact layer 20, and is smaller than the target temperature at which pigmentation by melanocytes is suppressed. A cooling layer 30 containing a phase change material having a melting point and an insulating material disposed on the cooling layer 30 and provided in a shape corresponding to the user's face and insulating the cooling layer 30 from the outside The provided outer cover 40 is included, and the cooling layer 30 of the skin whitening mask 10 may be cooled below the melting point of the phase change material.

In this case, the mass of the phase change material included in the cooling layer 30 may be determined based on the target temperature, the melting point of the phase change material, the latent heat at the melting point of the phase change material, and the area of the mask 10 . Specifically, the mass G of the phase change material included in the cooling layer 30 may be determined by Equations 1 and 2 below.

(수학식 1)

(Equation 1)

(수학식 2)

(Equation 2)

(Where A is the area of the mask 10, ΔH is the latent heat at the melting point of the phase change material, τ is the duration, q _HC is the heat flux on the skin surface, Q _HC is the amount of heat emitted from the skin)

In addition, the phase change material included in the cooling layer 30 may have a melting point in the range of -15 °C to 15 °C.

In addition, the target temperature may be in the range of 4 °C to 27 °C.

In addition, the phase change material included in the cooling layer 30 may be composed of a phase change material microcapsule (PCM microcapsule).

In addition, the cooling layer 30 may include a Zion pigment that has a specific color at a temperature lower than the melting point of the phase change material and becomes transparent when the melting point is reached.

In addition, the cooling layer 30 is disposed on the contact layer 20 and disposed on the first cooling layer 30a and the first cooling layer 30a including the first phase change material having a first melting point. and a second cooling layer 30b including a second phase change material having a second melting point different from the first melting point. In this case, the first melting point may be a temperature lower than the second melting point. Also, the duration for which the first melting point is maintained may be different from the duration for which the second melting point is maintained. Also, the duration for which the first melting point is maintained may be shorter than the duration for which the second melting point is maintained.

In addition, the cooling layer 30 is composed of a plurality of cooling regions containing a phase change material having a different melting point, and the plurality of cooling regions are arranged to correspond to parts having a similar temperature among a plurality of parts constituting the face part. can In this case, the plurality of cooling regions may include a phase change material having a lower melting point as the cooling region corresponding to a portion having a higher temperature among the plurality of portions constituting the face portion. In addition, in the plurality of cooling areas, the longer the cooling area corresponding to a portion having a higher temperature among the plurality of portions constituting the face part, the longer the duration for which the melting point is maintained.

In addition, the skin whitening mask 10 may further include a temperature indicating device 50 disposed to contact the cooling layer 30 to measure the temperature of the cooling layer 30 . At this time, the temperature indicating device 50 is based on the temperature measured by the temperature sensor 51 that measures the temperature of the cooling layer 30 , the communication unit 54 that communicates with the user's terminal, and the temperature sensor 51 . Thus, the communication unit 54 may include a control unit 52 that controls to give a notification about the detachment of the mask 10 to the user's terminal.

A step of placing the skin whitening mask 10 on the user's face may be performed. (S110)

The skin whitening mask 10 may be positioned on the user's face so that the lower portion of the contact layer 20 is in close contact with the face.

In addition, a lower portion of the contact layer 20 to which a coating solution including a functional material for an incidental skin improvement effect is applied may be positioned on the user's face.

In addition, a strap or a band for providing tension to the skin whitening mask 10 is additionally provided so that it can be sufficiently adhered to the skin in contact with the user's skin.

A step of suppressing pigmentation of the facial skin by the skin whitening mask 10 may be performed. (S120)

The skin whitening mask 10 uses the latent heat at the melting point of the phase change material for a duration in which at least the melting point is maintained longer than the first time required for suppression of the pigmentation through the contact layer 20 to the user's skin. The pigmentation of the facial skin in close contact with the lower portion of the contact layer 20 can be suppressed by applying cooling heat to the .

In this case, the first time period may be at least 5 seconds. Also, the first time may be a time required for the skin to maintain the target temperature for at least 4 seconds.

A step of preventing the skin whitening mask 10 from damaging the facial skin may be performed. (S130)

The skin whitening mask 10 can prevent damage to the facial skin as the phase change of the phase change material is terminated before the second time elapses when the damage to the skin occurs.

In this case, the second time may be up to 300 seconds. In addition, the second time may be a time required for the skin to maintain the target temperature for up to 120 seconds.

On the other hand, the above-described skin whitening method may be similarly performed using the skin whitening mask 10 as well as the skin whitening device 11 . For example, the skin whitening device 11 may not only whiten the user's facial skin, but may also be positioned on other parts of the user, such as hands, feet, and upper body, to whiten the skin.

Since the above-described content may be applied to the skin whitening method shown in FIG. 16 as it is, a more detailed description will be omitted.

Since each step described in the skin whitening method according to the embodiment of the present specification described above is not essential, the skin whitening method may include all of the steps as well as being performed including only some of the steps. In addition, since the order in which each step is described is only for convenience of explanation, each step in the skin whitening method does not necessarily have to be performed in the described order.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Accordingly, the embodiments of the present invention described above may be implemented separately or in combination with each other.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10: skin whitening mask 11: skin whitening device
20: contact layer 30: cooling layer
30a: first cooling layer 30b: second cooling layer
31: phase change material microcapsule 32: heat transfer member
34: cooling area 34a: first cooling area
34b: second cooling region 34c: third cooling region
34d: fourth cooling zone 40: outer cover
50: temperature indicating device 51: temperature sensor
52: control unit 53: output unit
54: communication unit 55: battery

Claims (20)

It is cooled within the target temperature range in which pigmentation by melanocytes is suppressed, and is longer than the first time for generating the inhibitory effect of pigmentation by melanocytes (Melanocytte) and damage to the skin A skin whitening mask for performing skin whitening by cooling the user's skin for a shorter period of time than the second time occurring,
A contact layer whose lower portion is in contact with the user's face, provided with a flexible material so as to be in close contact with the face;
A phase change material (PCM) for applying cooling heat to the user's skin, disposed on the contact layer, the phase change material having a melting point below the target temperature - a cooling layer comprising; and
an outer cover disposed on the cooling layer; including,
The mass (G) of the phase change material satisfies the following Equations 1, 2 and 3

(Equation 1)

(Equation 2)

(Equation 3)
- Here, A is the area of the skin whitening mask,

is the latent heat at the melting point of the phase change material,

is the time after the skin lightening mask cooled to the target temperature range is worn on the user's face, QHC1 is the first time after the skin lightening mask cooled to the target temperature range is worn on the user's face The heat flux emitted from the user's face, QHC2, is the heat flux emitted from the user's face for the second time after the skin lightening mask cooled within the target temperature range is worn on the user's face, t1 is the a first time, t2, the second time qHC is a function of the time of the heat flux emitted from the user's face after the skin lightening mask cooled to within the target temperature range is worn on the user's face;
Skin whitening mask.
delete delete According to claim 1,
The phase change material has a melting point of a temperature included in the range of -15 °C to 15 °C
Skin whitening mask.
According to claim 1,
The target temperature range is in the range of -15 °C to 15 °C.
Skin whitening mask.
According to claim 1,
the first time period is at least 5 seconds;
The second time is up to 300 seconds.
Skin whitening mask.
According to claim 1,
the first time period is at least 4 seconds;
the second time is 120 seconds
Skin whitening mask.
According to claim 1,
The phase change material is composed of a phase change material microcapsule (PCM Microcapsule) having the phase change material
Skin whitening mask.
According to claim 1,
The cooling layer has a specific color at a temperature lower than the melting point, and contains a Zion pigment (Thermochromic pigment) that becomes transparent when the melting point is reached
Skin whitening mask.
According to claim 1,
The cooling layer is disposed on the contact layer, a first cooling layer including a first phase change material having a first melting point, and a second melting point different from the first melting point Consists of a second cooling layer including a second phase change material having
Skin whitening mask.
11. The method of claim 10,
The first melting point is a temperature lower than the second melting point
Skin whitening mask.
11. The method of claim 10,
After the skin whitening mask cooled within the target temperature range is worn on the user's face, the phase change time interval of the first phase change material is different from the phase change time interval of the second phase change material.
Skin whitening mask.
13. The method of claim 12,
The phase change time period of the first phase change material is shorter than the phase change time period of the second phase change material
Skin whitening mask.
According to claim 1,
The cooling layer is composed of a plurality of cooling zones containing a phase change material having a different melting point,
The plurality of cooling areas are disposed to respectively correspond to portions having a similar temperature among a plurality of portions constituting the face portion.
Skin whitening mask.
15. The method of claim 14,
The plurality of cooling areas includes a phase change material having a lower melting point as the cooling area corresponding to a portion having a higher temperature among a plurality of portions constituting the face part
Skin whitening mask.
15. The method of claim 14,
In the plurality of cooling regions, the longer the duration for which the melting point is maintained, the longer the cooling region corresponding to a portion having a higher temperature among the plurality of parts constituting the face part.
Skin whitening mask.
According to claim 1,
The contact layer is a coating solution containing a functional material for an incidental skin improvement effect is applied.
Skin whitening mask.
According to claim 1,
a temperature indicating device disposed in contact with the cooling layer to measure a temperature of the cooling layer; further comprising,
The temperature indicating device,
a temperature sensor for measuring the temperature of the cooling layer;
a communication unit for communicating with the user's terminal; and
a control unit for controlling to give a notification about detachment of the mask to the user's terminal through the communication unit based on the temperature measured by the temperature sensor; containing,
Skin whitening mask.
delete delete

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