Skin treatment device

Abstract

The present invention relates to a skin treatment device for treating skin and alleviating wrinkles, the skin treatment device comprising: a housing having an opening at the front thereof; a heating unit disposed inside the housing and comprising a base having a plurality of protrusions on the front surface thereof, a heating element for heating the base, and a heater pad disposed at the rear of the heating element; and a temperature sensor for measuring the temperature of the heater pad, wherein the temperature of the plurality of protrusions is estimated on the basis of the temperature measured by the temperature sensor.

Description

Skin treatment device

[0001] The present invention relates to a skin treatment device.

[0002] Generally, the basic structure of the skin consists of three layers: the epidermis, dermis, and subcutaneous tissue. The epidermis is located at the uppermost layer of the skin and serves to protect it from external stimuli, exhibiting keratinization and exfoliation. The dermis is situated below the epidermis; it is approximately seven times thicker and contains collagen and elastin, which are types of proteins. The dermis is responsible for important functions such as nutrient supply, secretion, and sensation. Subcutaneous tissue forms the skin's curves and functions to protect against external impacts while maintaining body temperature.

[0003] Meanwhile, wrinkles increase as the skin ages due to the loss of elasticity and flexibility, a decrease in moisture content, and reduced regenerative capacity. Additionally, the skin may sag in hot weather, and swelling or enlarged pores may occur due to various causes such as plastic surgery, dietary intake high in sodium, lack of sleep and exercise, and circulatory disorders.

[0004] Therefore, various medical and beauty devices are being released to prevent skin aging and wrinkles. For example, medical or beauty devices utilizing LEDs that emit wavelengths in the visible and infrared regions are effective for wrinkle improvement, skin regeneration, and acne treatment, while medical or beauty devices utilizing ultrasonic vibrations are effective for skin care.

[0005] The present invention provides a skin treatment device for treating skin and improving wrinkles.

[0006] One embodiment of the present invention provides a skin treatment device comprising a housing having an opening at the front, a heating unit including a base disposed inside the housing and having a plurality of protrusions on the front surface, a heating element for heating the base, and a heater pad disposed on the rear surface of the heating element, and a temperature sensor for measuring the temperature of the heater pad, wherein the temperature of the plurality of protrusions is estimated through the temperature measured by the temperature sensor.

[0007] The skin treatment device according to the present invention can increase the safety of skin treatment and enhance the effectiveness of skin treatment by more accurately estimating and controlling the temperature of a plurality of protrusions in contact with the skin.

[0008] The skin treatment device according to the present invention can improve the heat generation and heat transfer efficiency of the heating element and can increase heat dissipation by increasing the heat dissipation area of ​​the heater pad.

[0009] FIG. 1 is a perspective view illustrating a skin treatment device according to one embodiment of the present invention.

[0010] FIG. 2 is a perspective view showing the tip housing of FIG. 1 separated.

[0011] Fig. 3 is a rear perspective view of Fig. 2.

[0012] Figure 4 is a longitudinal section of Figure 1.

[0013] FIG. 5 is a partial perspective view illustrating a heating unit of a skin treatment device according to one embodiment of the present invention.

[0014] FIG. 6 is a partial perspective view showing the state in which the base is separated from the heating unit in FIG. 5.

[0015] FIG. 7 is a partial perspective view showing the state in which the base, heating element, and heater pad are separated from the heating unit in FIG. 5.

[0016] Fig. 8 is a rear perspective view of Fig. 7.

[0017] One embodiment of the present invention provides a skin treatment device comprising: a housing having an opening at the front; a heating unit including a base disposed inside the housing and having a plurality of protrusions on the front surface, a heating element for heating the base, and a heater pad disposed on the rear surface of the heating element; and a temperature sensor for measuring the temperature of the heater pad, wherein the temperature of the plurality of protrusions is estimated through the temperature measured by the temperature sensor.

[0018] In addition, the heating temperature of the heating element can be controlled according to the estimated temperature of the plurality of protrusions.

[0019] In addition, an insertion groove may be formed on the rear surface of the heater pad, and the measuring part of the temperature sensor may be placed in the insertion groove.

[0020] In addition, a heat dissipation groove may be formed on the front surface of the heater pad.

[0021] In addition, an insertion projection may be formed on one side of the heater pad, and an insertion groove corresponding to the insertion projection may be formed on the front of the case forming the exterior of the heating unit.

[0022] In addition, the front and rear dimensions of the insertion groove may be formed to be larger than the front and rear dimensions of the insertion projection.

[0023] In addition, the temperature sensor may include a thermocouple.

[0024] In addition, the skin treatment device of the present embodiment may further include an overload cutoff member that cuts off the power supply to the heating element when the heating element overheats.

[0025] In addition, the overload blocking member may include a thermal fuse connected to the power line of the heating element.

[0026] Other aspects, features, and advantages other than those described above will become clear from the following drawings, claims, and detailed description of the invention.

[0027] The structure and operation of the present invention will be described in detail below with reference to embodiments of the present invention illustrated in the attached drawings.

[0028] The present invention is capable of various modifications and may have various embodiments; specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention, and the methods for achieving them, will become clear by referring to the embodiments described below in detail together with the drawings. However, the present invention is not limited to the embodiments disclosed below but can be implemented in various forms.

[0029] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. When describing with reference to the drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted.

[0030] In the following embodiments, terms such as first, second, etc. are used not in a limiting sense, but for the purpose of distinguishing one component from another component.

[0031] In the following examples, singular expressions include plural expressions unless the context clearly indicates otherwise.

[0032] In the following embodiments, terms such as "include" or "have" mean that the features or components described in the specification are present, and do not preclude the possibility that one or more other features or components may be added.

[0033] In the drawings, the size of components may be exaggerated or reduced for convenience of explanation. For example, the size and thickness of each component shown in the drawings are depicted arbitrarily for convenience of explanation, so the present invention is not necessarily limited to what is illustrated.

[0034] Where an embodiment can be implemented differently, a specific process sequence may be performed differently from the order described. For example, two processes described consecutively may be performed substantially simultaneously or proceed in the reverse order of the description.

[0035] FIG. 1 is a perspective view illustrating a skin treatment device according to one embodiment of the present invention, FIG. 2 is a perspective view illustrating the tip housing of FIG. 1 separated, FIG. 3 is a rear perspective view of FIG. 2, and FIG. 4 is a longitudinal cross-sectional view of FIG. 1.

[0036] Referring to FIGS. 1 to 4, a skin treatment device (100) according to one embodiment of the present invention comprises a housing (110), a heating unit (120), a driving unit (130), and a detachable member (140). FIG. 1 is a perspective view illustrating a skin treatment device according to one embodiment of the present invention, FIG. 2 is a perspective view illustrating the tip housing of FIG. 1 separated, FIG. 3 is a rear perspective view of FIG. 2, and FIG. 4 is a longitudinal cross-sectional view of FIG. 1.

[0037] Referring to FIGS. 1 to 4, a skin treatment device (100) according to one embodiment of the present invention may include a housing (110), a heating unit (120), a driving unit (130), and a temperature sensing unit (150).

[0038] The skin treatment device (100) can come into contact with the user's skin and heat the tissue of the skin in contact. In the skin treatment device (100), a protrusion (121a) of a heating unit (120) having a predetermined temperature comes into contact with and separates from the skin in an instant, and at this time, the skin may be vaporized or burns may be generated by the heat transferred from the skin treatment device (100). The vaporization or burns generated on the skin may be regenerated by the tissue's regenerative ability, thereby treating the skin or improving wrinkles on the skin.

[0039] The skin treatment device (100) can apply pressure to the skin by coming into contact with the user's skin. The skin treatment device (100) has a protrusion (121a) of a heating unit (120) having a predetermined temperature that moves forward, heating the skin while simultaneously applying pressure. At this time, the skin tissue is damaged by the heat and pressure. Subsequently, the damaged skin tissue is regenerated by the skin's regenerative ability, so that the skin can be treated or wrinkles on the skin can be improved.

[0040] The housing (110) forms the exterior of the skin treatment device (100) and may have an internal space in which other parts can be placed.

[0041] The housing (110) may have an opening (111a) at one end through which the front portion of the heating unit (120) is exposed. The projection (121a) of the heating unit (120) may be exposed to the outside through the opening (111a). The size of the opening (111a) may be set according to the size of the front portion of the heating unit (120) exposed through the opening (111a).

[0042] In the non-operating retracted position, the heating unit (120) is positioned at the rear of the opening (111a) of the housing (110). The projection (121a) of the heating unit (120) is positioned inside the opening (111a). Referring to FIG. 4, the projection (121a) of the heating unit (120) has a position retracted by a size d1 from the opening (111a).

[0043] In the operating forward position, the heating unit (120) is positioned in front of the opening (111a) of the housing (110). The projection (121a) of the heating unit (120) protrudes outward from the opening (111a). Referring to FIG. 4, the projection (121a) of the heating unit (120) has a position advanced by a size d2 from the opening (111a).

[0044] For example, the heating unit (120) may be set so that d2 in the forward position is smaller than d1 in the backward position.

[0045] When the heating unit (120) is in operation, the protrusion (121a) can advance by the sum of d1 and d2, and when the heating unit (120) is not in operation, the protrusion (121a) can retract by the distance advanced, and when the heating unit (120) is not in operation, it can be located in the internal space of the housing (110) to increase safety and portability.

[0046] The heating unit (120) can be moved linearly forward and backward through the driving unit (130), and the forward and backward distances of the protrusion (121a) correspond to the size of the linear forward and backward movement of the heating unit (120).

[0047] The housing (110) can be configured in various ways depending on the operating method of the skin treatment device (110). For example, the housing (110) may be a roughly column-shaped handpiece or a gun-shaped handpiece having a handle. However, for convenience of explanation, the following description will focus on an embodiment having a gun-shaped appearance.

[0048] The housing (110) may include a tip housing (111) and a main body housing (112).

[0049] The tip housing (111) may have an open front and rear and an internal space communicating with the open front and rear. The internal space may be formed in a shape in which the cross-sectional area gradually decreases from the rear to the front.

[0050] The projection (121a) of the heating unit (120) can be exposed to the outside through the opening (111a) formed at the front of the tip housing (111), and the rear part of the top housing (111) can be combined with the front part of the main body housing (112) so that the internal space can be communicated with each other.

[0051] The main body housing (112) may have a two-piece structure that can be separated and combined, and when combined, it may have a gun shape in which an opening (112a) is formed at the front, an internal space in which parts can be placed is formed, and a handle portion (112b) is formed at the bottom. However, for the convenience of explaining other configurations, the main body housing (112) combined as a one-piece will be described as the main embodiment.

[0052] The handle portion (112b) of the main body housing (112) may have an open bottom, and a power connection portion (112c) through which a main power line (not shown) is drawn out may be provided.

[0053] Although not described in detail, the skin treatment device (100) according to the present invention may receive external power via a wired method, but is not limited thereto, and may also receive power via a power charging method of an internal battery. In the case of a power charging method of an internal battery, the power connection part (112c) may be removed from the handle part (112b), and a port for charging power to the internal battery may be placed on the handle part (112b).

[0054] The rear portion of the tip housing (111) can be mutually detachably coupled to the front portion of the main body housing (112) through magnetic force.

[0055] To this end, a rim portion (112d) may be formed on the inner front surface of the main body housing (112), and a magnet (113) may be disposed on the rim portion (112d), and a detachable portion (111b) that is magnetically coupled to the magnet (113) may be disposed on the inner rear surface of the tip housing (111).

[0056] The magnet (113) can be formed in a roughly square shape, but is not limited thereto and can have various shapes such as elliptical and circular.

[0057] The detachable part (111b) can be formed in the shape of a bar having a length in the front-rear direction of the tip housing (111) and can be formed of a material attached to the magnet (113).

[0058] The end of the detachable part (111b) can be detachably attached to the front of the magnet (113) via magnetic force, and the rear part of the tip housing (111) can be detachably coupled to the front part of the main body housing (112).

[0059] At this time, the detachable part (111b) may include a first detachable part (111b-1) and a second detachable part (111b-2). The end of the first detachable part (111b-1) may be attached to the front surface of the magnet (113), and the second detachable part (111b-2) may be attached to wrap around both sides of the magnet (113).

[0060] By attaching the first detachable part (111b-1) to the front of the magnet (113) and the second detachable part (111b-2) to both sides of the magnet (113), the tip housing (111) can be connected to the main body housing (112) more accurately and stably. In addition, since no separate fastening member is required, the tip housing (111) and the main body housing (112) can be separated and connected more easily.

[0061] FIG. 5 is a partial perspective view illustrating a heating unit of a skin treatment device according to one embodiment of the present invention, and FIG. 6 is a partial perspective view illustrating a state in which the base is separated from the heating unit in FIG. 5.

[0062] Referring to FIGS. 4 to 6, the heating unit (120) may include a base (121), a heating element (122), a heater pad (123), a spacer (124), an elastic member (125), a driving connector (126), a substrate (127), and a case (128).

[0063] The base (121) has a front surface and a rear surface and may have a roughly plate-like shape. A plurality of protrusions (121a) may be formed on the front surface of the base (121), and the base (121) may have a predetermined thickness to support the plurality of protrusions (121a).

[0064] A base (121) including a plurality of protrusions (121a) may be formed of a ceramic material. By being formed of a ceramic material, the base (121) including a plurality of protrusions (121a) can be heated by rapidly receiving heat from a heating element (122). In addition, since ceramic is a biocompatible material, it can minimize skin irritation upon contact with the plurality of protrusions (121a) and enhance antibacterial properties, thereby improving skin treatment and wrinkle improvement effects.

[0065] Multiple protrusions (121a) can be placed on the front surface of the base (121) and can transmit heat and pressure in contact with the skin.

[0066] Each of the multiple protrusions (121a) may have a pyramid shape with a pointed tip, but is not limited thereto, and may be formed in various shapes with a pointed tip, such as a cone shape, for example.

[0067] The plurality of protrusions (121a) can be configured in various ways depending on the area of ​​skin treatment or the use of the skin treatment device (100). In the drawing, the plurality of protrusions (121a) are shown having an N×N square arrangement, but this is not limited thereto and can be configured in various ways.

[0068] A plurality of protrusions (121a) can be formed integrally with the base (121) by etching a portion of the base (121). Since the base (121) and the plurality of protrusions (121a) are formed integrally, the pressure can be evenly distributed when the plurality of protrusions (121a) come into contact with the skin.

[0069] A heating element (122) may be placed on the rear side of the base (121). An insertion groove (121b) may be formed on the rear side of the base (121), and a heating element (122) may be inserted into the insertion groove (121b).

[0070] Since the heating element (122) is inserted into the insertion groove (121b), the front-to-back size of the heating unit (120) can be reduced by the thickness of the heating element (122). As the front-to-back size of the heating unit (120) is reduced, the skin treatment device (100) can be miniaturized and manufacturing costs can be reduced.

[0071] Since the heating element (122) is inserted into the insertion groove (121b), the insertion groove (121b) may have a structure that is in close contact with the side as well as the front of the heating element (122). Since the heating element (122) is in close contact with the base (121) not only on the front but also on the side, the contact area can be increased to improve heat transfer efficiency. As the heat transfer efficiency from the heating element (122) to the base (121) is increased, the base (121) can be heated more quickly.

[0072] The heating element (122) may be made of, for example, a ceramic heater. Since the heating element (122) is made of a ceramic heater, it can be heated quickly with rapid heating, and electrical energy can be used efficiently through self-heat storage, safety can be increased by preventing excessive overheating, and the product weight can be reduced by being lightweight. The heating element (122) can generate heat by receiving electricity through a power line (122a). The power line (122a) of the heating element (122) can be connected to a substrate (127).

[0073] A heater pad (123) can be placed on the rear side of a heating element (122). The heater pad (123) can prevent internal components from being damaged by heat by minimizing the transfer of heat generated from the heating element (122) to the rear side opposite the base (121).

[0074] Since the heater pad (123) blocks heat moving to the rear, the heat generated from the heating element (122) can be transferred only to the multiple protrusions (121a). The heater pad (123) prevents heat loss and can increase the heat transfer efficiency.

[0075] A heat dissipation groove (123a) may be formed on the front surface of the heater pad (123). Since heat generated from the heating element (122) is temporarily stored in the heat dissipation groove (123a) and then radiated back to the heating element (122), the heating performance and heat transfer efficiency of the heating element (122) can be increased. Additionally, the heat dissipation performance can be improved by increasing the heat dissipation area of ​​the heater pad (123) through the heat dissipation groove (123a).

[0076] A spacer (124) may be placed on the rear of the heater pad (123). An insertion groove (123b) may be formed on the rear of the heater pad (123), and a front portion of the spacer (124) may be inserted into the insertion groove (123b).

[0077] Since a portion of the front of the spacer (124) is inserted into the insertion groove (123b), the size of the spacer (124) can be reduced by the size of the spacer (124) being inserted. Additionally, the spacer (124) can move integrally with the heater pad (123), so the heating unit (120) can move linearly more stably.

[0078] The elastic member (125) can elastically support the base (121), the heating element (122), and the heater pad (123) in response to external pressure applied to the plurality of protrusions (121a).

[0079] The elastic member (125) may be made of, for example, a compression coil spring, and a front portion of the elastic member (125) may be inserted and supported on the rear side of the spacer (124), and a rear portion of the elastic member (125) may be inserted and supported on the front support portion (126a) of the drive connector (126).

[0080] The elastic member (125) is supported at both the front and rear sides by an insertion method, thereby stably and elastically supporting the base (121), heating element (122), and heater pad (123) during linear movement of the heating unit (120).

[0081] The drive connector (126) is positioned at the rear end of the heating unit (120) and can be connected to the linear rod (131) of the drive unit (130). The linear rod (131) can be inserted and supported in the rear connection part (126b) of the drive connector (126).

[0082] For example, after the front end of the linear rod (131) is inserted into the rear connection part (126a), a fixing clamp (135) can be attached to the outer surface of the rear connection part (126a).

[0083] Therefore, when the linear rod (131) of the drive unit (130) moves linearly, the drive connector (126) moves linearly, and the entire heating unit (120) can move linearly.

[0084] The substrate (127) can be placed on the drive connector (126). For example, a step portion may be formed between the front support portion (126a) and the rear connection portion (126b) of the drive connector (126), and the substrate (127) may be fitted into and fixed to the step portion.

[0085] The substrate (127) is a type of connection board and is electrically connected to the control board (105) through input / output connector pins (not shown), and can serve as an intermediate medium when it is difficult to directly connect components of the heating unit (120) to the control board (105). The control board (105) is a type of main controller and is connected to each component of the skin treatment device (100), and can control the operation of each component. The input / output connector pins can be insulated with a material such as an insulator.

[0086] For example, the power line (122a) of the heating element (122) of the heating unit (120) can be connected to the substrate (127) and can be connected to the power supply unit (not shown) of the control board (105) through the input / output connector pin of the substrate (127), and the power supply unit of the control board (105) can apply electrical energy such as current to the power line (122a) through the input / output connector pin of the substrate (127).

[0087] The heating element (122) can be rapidly heated by receiving electrical energy from the power supply unit of the control board (105), and when the heating element (122) is heated, the plurality of protrusions (121a) of the base (121) can be rapidly heated.

[0088] The case (128) can form an exterior covering the heating unit (120), and, for example, can cover the spacer (124), elastic member (125), and driving connector (126).

[0089] The case (128) may have a two-piece structure in which the upper and lower parts can be separated and combined with each other. For example, the case (128) may consist of an upper case and a lower case that cover the upper and lower parts of the heating unit (120), respectively. In this case, the upper case and the lower case may be separated and combined with each other at the front side by a fastening member connection using a pipe screw (129), and at the rear side, may be separatedly connected to the upper and lower parts of the drive connector (126) through a fastening member, respectively. For example, the pipe screw (129) may be formed of a metal material having heat resistance.

[0090] A plurality of heat dissipation holes (128a) may be formed in the case (128). Heat generated inside the case (128) can be smoothly released to the outside of the case (128) through the plurality of heat dissipation holes (128a).

[0091] FIG. 7 is a partial perspective view showing the state in which the base, heating element, and heater pad are separated from the heating unit in FIG. 5, and FIG. 8 is a rear perspective view of FIG. 7.

[0092] Referring to FIGS. 7 and 8, the temperature sensing unit (150) may include a temperature sensor (151) that detects the temperature of the heater pad (123). As an example, the temperature sensor (151) may be a thermocouple having wires for power connection on both sides relative to the measuring part.

[0093] The temperature of a plurality of protrusions (121a) can be estimated through the temperature detected by the temperature sensor (151). For example, after the temperature sensor (151) measures the temperature of the heater pad (123), the temperature of the ends of the plurality of protrusions (121a) can be estimated through a processor (not shown) of the control board (105).

[0094] Since the ends of the multiple protrusions (121a) are parts that come into contact with the skin, it is important to maintain the temperature of the ends of the protrusions (121a) at a preset temperature. A temperature sensor (151) measures the temperature of a heater pad (123) that comes into contact with the rear surface of a heating element (122), and a processor estimates the temperature of the heating element (122) based on the temperature of the heater pad (123) measured by the temperature sensor (151). Then, using data on the heat conductivity from the heating element (122) to the base (121) and data on the shape and heat conductivity of the multiple protrusions (121a), the processor can estimate the temperature of the ends of the multiple protrusions (121a).

[0095] If the estimated end temperature of the plurality of protrusions (121a) is not within a preset temperature range, the processor can generate a signal to compensate for the temperature using the measured temperature data. The heating temperature of the heating element (122) can be controlled by adjusting the output of electrical energy applied to the heating element (122) according to the generated compensation signal.

[0096] For example, if the temperature measured by the temperature sensor (151) is below a preset temperature range, the heating temperature of the heating element (122) is increased by increasing the output of electrical energy applied to the heating element (122) to compensate for the temperature of the plurality of protrusions (121a), and if the temperature measured by the temperature sensor (151) is above a preset temperature range, the heating temperature of the heating element (122) is lowered by decreasing the output of electrical energy applied to the heating element (122) to compensate for the temperature of the plurality of protrusions (121a).

[0097] A measuring groove (123d) may be formed in the center of the insertion groove (123b) of the heater pad (123), and a measuring part of a temperature sensor (151) may be inserted and placed in the measuring groove (123d).

[0098] By measuring the temperature of the measuring groove (123d) of the heater pad (123) with the measuring part of the temperature sensor (151), the temperature of the heating element (122) in close contact with the front surface of the heater pad (123) can be estimated more accurately.

[0099] By accurately estimating the temperature of the heating element (122), the temperature of the base (121) that is in close contact with the front surface of the heating element (122) can be estimated more accurately, and consequently, the tip temperature of the plurality of protrusions (121a) can be accurately estimated and controlled, thereby increasing the safety of skin treatment and improving the effect of skin treatment.

[0100] The temperature sensing unit (150) may further include an overload cutoff member (152). The overload cutoff member (152) can cut off the power supply to the heating element (122) when the heating element (122) overheats.

[0101] The overload blocking member (152) may be a thermal fuse electrically connected to the power line (122a) of the heating element (122). The overload blocking member (152) may be placed on the outer surface of the case (128) and may be covered and protected by a fuse cover (153). The fuse cover (153) may be detachably fixed to the case (128) to cover the fuse cover (153).

[0102] Meanwhile, an insertion projection (123c) may be formed on the upper side of the heater pad (123), and an insertion groove (128b) corresponding to the insertion projection (123c) may be formed on the front upper side of the case (128). The front-to-back size of the insertion groove (128b) is formed to be larger than the front-to-back size of the insertion projection (123c), so that the heater pad (123) can move smoothly.

[0103] The heater pad (123) can be moved back and forth with the insertion projection (123c) inserted into the insertion groove (128b). When external pressure is applied to the plurality of projections (121a), the heater pad (123) can be elastically moved back and forth through the elastic force of the elastic member (125) together with the base (121) and the heating element (122). When the heater pad (123) is elastically moved back and forth, the insertion projection (123c) is inserted into the insertion groove (128b) and guided, so the heater pad (123) can be moved back and forth more stably.

[0104] As such, the present invention has been described with reference to the embodiments illustrated in the drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims.

[0105] The specific practices described in the embodiments are examples and do not limit the scope of the embodiments in any way. Furthermore, unless specifically stated as "essential," "importantly," etc., components may not be strictly necessary for the application of the present invention.

[0106] In the specification of the embodiments (particularly in the claims), the use of the term "the above" and similar descriptive terms may be in both singular and plural. Furthermore, where a range is described in the embodiments, it is considered to include the invention with respect to individual values ​​within said range (unless otherwise stated), and is equivalent to describing each individual value constituting said range in the detailed description. Finally, regarding the steps constituting the method according to the embodiments, unless explicitly stated in order or otherwise stated, said steps may be performed in a suitable order. The embodiments are not necessarily limited by the order in which said steps are described. The use of any examples or exemplary terms (e.g., etc.) in the embodiments is merely for the purpose of describing the embodiments in detail, and the scope of the embodiments is not limited by said examples or exemplary terms unless limited by the claims. Furthermore, those skilled in the art will understand that various modifications, combinations, and changes may be made according to design conditions and factors within the scope of the claims or equivalents.

Claims

1. Housing having an opening at the front; A heating unit comprising a base disposed inside the housing and having a plurality of protrusions on its front surface, a heating element that heats the base, and a heater pad disposed on the rear surface of the heating element; and A temperature sensing unit having a temperature sensor that detects the temperature of the heater pad; comprising, A skin treatment device in which the temperature of the plurality of protrusions is estimated through the temperature detected by the temperature sensor.

2. In Paragraph 1, A skin treatment device that controls the heating temperature of the heating element according to the estimated temperature of the plurality of protrusions.

3. In Paragraph 1, A skin treatment device in which a measuring groove is formed on the rear surface of the heater pad, and a measuring part of the temperature sensor is disposed in the measuring groove.

4. In Paragraph 1, A skin treatment device having a heat dissipation groove formed on the front surface of the heater pad.

5. In Paragraph 1, A skin treatment device having an insertion projection formed on one side of the heater pad, and an insertion groove corresponding to the insertion projection formed on the front of the case forming the exterior of the heating unit.

6. In Paragraph 5, A skin treatment device in which the front-rear size of the insertion groove is formed to be larger than the front-rear size of the insertion projection.

7. In Paragraph 1, A skin treatment device comprising: the temperature sensing unit further including an overload cutoff member that cuts off power supply to the heating element when the heating element overheats.

Images