Nail Curing Device

Abstract

A nail curing device is disclosed. A nail curing device according to one embodiment of the present invention comprises: a housing having an opening and a curing space provided therein for receiving a user's hand or foot through the opening; a plurality of light sources provided within the housing and performing a curing process of irradiating light into the curing space to cure a nail product applied to the user's fingernail or toenail; and a control unit that controls the plurality of light sources to perform the curing process.

Description

Technology Field

[0001] The present invention relates to a nail curing device. More specifically, it relates to a nail curing device for curing a photocurable nail product applied to a user's fingernail or toenail. Background Technology

[0002] In the beauty industry, procedures involving the application of nail products, such as photocurable UV-curing gels and photocurable manicures, to fingernails or toenails to enhance aesthetic effects are widely used. These nail products contain both photoinitiators and polymers, characterized by the polymers hardening through a chemical reaction when exposed to light of specific wavelengths, such as ultraviolet rays.

[0003] Conventional nail curing devices typically place a UV lamp or LED inside a lamp housing, and the user cures the nail product by placing their hand or foot inside and irradiating it with light for a certain period of time.

[0004] However, in conventional nail curing devices, there was a problem where users suffered burns due to tanning or a sensation of heat caused by excessive ultraviolet radiation and radiant heat generation from lamps or LEDs, affecting not only fingernails or toenails but also the backs of the hands or feet.

[0005] Furthermore, conventional nail curing devices are often placed under a wrist rest, which can make it difficult for the operator to check the display on the front of the device. Consequently, this leads to the problem of missing the optimal timing for the procedure because the operating time cannot be checked. Prior art literature

[0006] (Patent Document 0001) KR 20-0472939 Y1(2014.06.02.) The problem to be solved

[0007] The present invention aims to solve the aforementioned problems by providing a nail curing device that prevents burns by reducing the sensation of heat on the user's hands or feet during the curing process by repeating a pattern of turning on the light for a first period and turning it off for a second period.

[0008] In addition, we aim to provide a nail curing device that allows the user to recognize that the curing process is in progress and prevents the user's hands or feet from being tanned by ultraviolet rays by placing a visible light source, rather than an ultraviolet light source, at the location where the user's hands or feet are located.

[0009] In addition, we aim to provide a nail curing device that can provide the operator with visibility of the curing process by placing a display showing the operating time in the direction where the operator is located.

[0010] The problems to be solved by the present invention are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by a person skilled in the art from the description below. means of solving the problem

[0011] A nail curing device according to one embodiment of the present invention may include: a housing having an opening and a curing space provided for receiving a user's hand or foot through the opening; a plurality of light sources provided within the housing and performing a curing process of irradiating light into the curing space to cure a nail product applied to the user's fingernail or toenail; and a control unit that controls the plurality of light sources to perform the curing process.

[0012] In addition, the control unit may control the plurality of light sources to repeat turning on for a first time and turning off for a second time in order to protect the user's hand or foot contained in the curing space from burns while the curing process is performed.

[0013] In addition, the first time may be 0.6 seconds to 1 second, and the second time may be 1 second to 2 seconds.

[0014] Additionally, the device further includes a sensor provided within the housing and detecting that the user's hand or foot is received in the curing space, and the control unit can control the curing process by turning on or off the plurality of light sources according to the detection signal of the sensor.

[0015] In addition, the control unit can control the plurality of light sources to operate in a continuous mode that performs the curing process by illuminating the plurality of light sources and ignoring whether the sensor detects the user input.

[0016] Additionally, the housing includes a plurality of displays for displaying information about the curing process, and the plurality of displays may include a first display disposed on the upper surface of the housing and a second display disposed on the opposite side of the opening so that a practitioner performing nail art on the user can recognize it.

[0017] Additionally, the plurality of light sources includes a first group of light sources that irradiate light of ultraviolet wavelength and a second group of light sources that irradiate light of visible wavelength, wherein the first group of light sources is positioned in an area irradiated to the user's fingernail or toenail in the curing space, and the second group of light sources can be positioned in an area irradiated to the user's hand or foot back in the curing space.

[0018] Additionally, the housing includes a pad forming one side of the curing space, and the pad may have a guideline protruding so that the user can perceive it in order to align the user's fingernail in the correct position.

[0019] Additionally, the housing includes a pad forming one side of the curing space, and the pad can be separated from the housing so that the user can easily put their foot into the curing space.

[0020] Additionally, the housing includes a plurality of legs so as to be able to adjust the height of the housing according to the user's foot accommodated in the curing space, and the plurality of legs are rotatably connected to the lower surface of the housing so as to be rotated from a storage position to a usage position, and support the housing in the usage position to adjust the height of the housing.

[0021] In addition, the control unit can control the plurality of light sources so that when the curing process starts, the plurality of light sources light up in a start pattern, and when the curing process ends, the plurality of light sources light up in a end pattern different from the start pattern.

[0022] Additionally, the start pattern may be a pattern in which the plurality of light sources blink for a predetermined period of time and brighten from low brightness to high brightness, and the end pattern may be a pattern in which the plurality of light sources blink for a predetermined period of time and dim from high brightness to low brightness. Effects of the invention

[0023] A nail curing device according to one embodiment of the present invention can prevent burns by reducing the sensation of heat on the user's hand or foot during the curing process by repeating a pattern of turning on the light for a first time and turning it off for a second time.

[0024] In addition, by placing a visible light source rather than an ultraviolet light source at the location of the user's hand or foot, the user is made aware that the curing process is in progress, and tanning of the user's hand or foot caused by ultraviolet rays can be prevented.

[0025] In addition, a display showing the operating time can be placed in the direction where the operator is located to provide the operator with visibility of the curing process.

[0026] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by a person skilled in the art from the description below. Brief explanation of the drawing

[0027] FIG. 1 is a perspective view of a nail curing device according to one embodiment of the present invention. FIG. 2 is a block diagram of a nail curing device according to one embodiment of the present invention. FIG. 3 is a drawing showing the curing space of a nail curing device according to one embodiment of the present invention. FIG. 4 is a diagram showing an operating state according to one embodiment of the present invention. FIG. 5 is a drawing showing the opposite side of the opening of a nail curing device according to one embodiment of the present invention. FIG. 6 is a diagram showing the arrangement of a first group light source and a second group light source of a nail curing device according to one embodiment of the present invention. FIG. 7 is a drawing showing a state in which a user places their hand on a pad of a nail curing device according to one embodiment of the present invention. FIG. 8 is a drawing showing the pad separated from the housing of a nail curing device according to one embodiment of the present invention. Figure 9 is a drawing showing a foot placed in a nail curing device with the pad separated. FIG. 10(a) is a side view showing a leg unfolded in a nail curing device according to one embodiment of the present invention, FIG. 10(b) is a partial enlarged view showing the leg in a folded state, and FIG. 10(c) is a partial enlarged view showing the leg in an unfolded state. Specific details for implementing the invention

[0028] Embodiments of the present invention are described below with reference to the attached drawings so that those skilled in the art can easily implement the invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. Furthermore, in order to clearly explain the embodiments of the present invention in the drawings, parts unrelated to the explanation have been omitted.

[0029] The terms used in this specification are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions may include plural expressions unless the context clearly indicates otherwise.

[0030] In this specification, terms such as “comprising,” “having,” or “having” are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not excluding in advance the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0031] Furthermore, the components shown in the embodiments of the present invention are illustrated independently to represent different characteristic functions and do not imply that each component consists of separate hardware or a single software unit. That is, for convenience of explanation, each component is described as a separate component, and at least two of the components may be combined to form a single component, or a single component may be divided into multiple components to perform a function. Such integrated and separated embodiments of each component are also included within the scope of the present invention as long as they do not deviate from the essence of the invention.

[0032] In addition, the following embodiments are provided to explain more clearly to those with average knowledge in the industry, and the shapes and sizes of the elements in the drawings may be exaggerated for clearer explanation.

[0033] Hereinafter, a preferred embodiment according to the present invention will be described with reference to the attached drawings.

[0034] FIG. 1 is a perspective view of a nail curing device according to an embodiment of the present invention, and FIG. 2 is a block diagram of a nail curing device according to an embodiment of the present invention. FIG. 3 is a drawing showing the curing space of a nail curing device according to an embodiment of the present invention, and FIG. 4 is a drawing showing the operating state according to an embodiment of the present invention. FIG. 5 is a drawing showing the opposite side of the opening of a nail curing device according to an embodiment of the present invention.

[0035] Referring to FIGS. 1 to 5, a nail curing device (100) according to one embodiment of the present invention is a device for curing a nail product applied to a user's fingernails and toenails, and may include a housing (110) having an opening (101) and a curing space (102) in which a user's hand or foot is received through the opening (101), a plurality of light sources (120) provided within the housing (110) and performing a curing process of irradiating light into the curing space (102) so as to cure the nail product applied to the user's fingernails or toenails, and a control unit (130) that controls the plurality of light sources (120) to perform the curing process.

[0036] A curing space (102) formed inside the housing (110) can be opened through an opening (101) formed on one side of the housing (110). A user can place their hand or foot into the curing space (102) through the opening (101). The inner wall (103) of the housing (110) forming the curing space (102) can be formed of a highly reflective material to increase the efficiency of the curing process and can be fixed to the housing (110). A plurality of light sources (120) can be mounted on the inner wall (103).

[0037] A light source (120) is intended to emit light into a curing space (102) to irradiate the user's fingernail or toenail, and may be arranged along an inner wall (103). A cavity (104) may be formed in the inner wall (103) to reduce the light emission angle of each light source (120). The light source (120) is a light-emitting lamp or LED and may emit light of a wavelength capable of curing nail products. For example, the light source (120) may emit ultraviolet or visible light.

[0038] Here, the nail product is a light-curing nail product and may include gel polish, hard gel, soft gel, polygel, etc.

[0039] The control unit (130) is provided to control a plurality of light sources (120), and is a printed circuit board (PCB) or a metal circuit board, in which various electrical components are assembled using known designs and technologies, and is electrically connected to a plurality of light sources (120) to control a curing process by controlling the plurality of light sources (120).

[0040] In one embodiment, the housing (110) of the nail curing device (100) may further include a power control unit (111), a function control unit (112), and a display (113). The power control unit (111) and the function control unit (112) may be provided outside the housing (110). A user may operate the nail curing device (100) by operating the function control unit (112) to select one of a plurality of pre-programmed operating modes. The display (113) is provided to display information about the currently operating curing process, such as the remaining time of the curing process, and a plurality of displays may be provided on the housing (110). In the embodiment illustrated in FIGS. 4 and 5, the first display (113a) may be placed on the upper surface of the housing (110) together with the function control unit (112), and the second display (113b) may be placed on the opposite side of the opening (101) so that the practitioner performing the nail art on the user can recognize the remaining time of the curing process. Since the second display (113b) is positioned opposite the opening (101), the user and the nail technician performing the nail art on the opposite side can easily recognize the remaining time of the curing process, so the technician can continue the procedure at an appropriate timing.

[0041] In one embodiment, the control unit (130) can control the plurality of light sources (120) so that when the curing process starts, the plurality of light sources (120) light up in a starting pattern. The control unit (130) can control the plurality of light sources (120) so that when the curing process ends, the plurality of light sources (120) light up in a ending pattern different from the starting pattern.

[0042] The above start pattern is a pattern in which a plurality of light sources (120) flash for a predetermined time and brighten from low brightness to high brightness, and the above end pattern may be a pattern in which a plurality of light sources (120) flash for a predetermined time and darken from high brightness to low brightness.

[0043] For example, the above start pattern may blink at intervals of 0.5 seconds, and the light source (120) may gradually brighten within 1 to 2 seconds. When the start pattern is completed, the light source (120) is maintained at a curing brightness to proceed with the curing of the nail product on the fingernail or toenail. At this time, since the process of gradually brightening rather than suddenly turning on at high brightness was performed, it may be easy for the user or practitioner to adapt to the light source. When the curing process is finished, the light source (120) may blink for 1 to 2 seconds and gradually dim.

[0044] As such, since the start and end patterns clearly distinguish the curing process, users or practitioners can easily visually recognize the beginning and end of the curing process, and the light source pattern that smoothly brightens and darkens can enhance visual satisfaction along with the device's premium feel.

[0045] In one embodiment, the control unit (130) may control a plurality of light sources (120) to repeatedly turn on for a first time and turn off for a second time according to the operation of the user's function control unit (112). The operating mode may be an operating mode for properly curing a nail product applied to fingernails or toenails while protecting against burns by reducing the heat sensation on the user's hand or foot accommodated in the curing space (102) during the curing process.

[0046] In one embodiment, the first time may be 0.6 seconds to 1 second, and the second time may be 1 second to 2 seconds.

[0047] [Experimental Example]

[0048] <Experimental Example 1> Lighting and Turning Off Test

[0049] Tests were conducted on the user's heat sensation and the curing completeness of the nail product according to the lighting time (first time) and extinguishing time (second time) of the nail curing device according to one embodiment of the present invention.

[0050] division Lighting time Lights out time Whether or not there is a sensation of heat Curing completeness Fixed lights-out time 1.6 sec 1.0 sec I have a fever Does not drip 1.4 sec 1.0 sec I have a fever Does not drip 1.2 sec 1.0 sec I have a fever Does not drip 1.0 sec 1.0 sec No sensation of heat Does not drip 0.8 sec 1.0 sec No sensation of heat Does not drip 0.6 sec 1.0 sec No sensation of heat Does not drip Fixed lighting time 0.8 sec 0.8 sec No sensation of heat Does not drip 0.8 sec 1.0 sec No sensation of heat Does not drip 0.8 sec 1.2 sec No sensation of heat Does not drip 0.8 sec 1.4 sec No sensation of heat Does not drip 0.8 sec 1.6 sec No sensation of heat Does not drip 0.8 sec 1.8 sec No sensation of heat Does not drip 0.8 sec 2.0 sec No sensation of heat Does not drip 0.8 sec 2.2 sec No sensation of heat dripping

[0051] Referring to Test Results Table 1, it was found that when the light source (120) is turned on and light is irradiated onto the user's hand or foot, the user feels heat when exposed to light for 1.2 seconds or more. When the light source (120) is turned off and there is no light to cure the nail product, it was found that if there is no light for 2.2 seconds or more and no curing action occurs, the nail product applied to the user's fingernail or toenail flows down. According to Experiment Example 1 above, it was found that when the first time the light source (120) is turned on is 0.6 seconds to 1 second and the second time the light source (120) is turned off is 1 second to 2 seconds, the user does not feel heat and the nail product does not flow down.

[0052] In this way, by repeatedly turning on the light source (120) for 0.6 to 1 second and turning it off for 1 to 2 seconds, the irradiation is stopped before high heat accumulates, and a rest period is immediately given, thereby minimizing heat sensation and skin burns. Additionally, by performing curing in multiple stages through short and repeated irradiation, the nail product can be cured uniformly and stably. Therefore, the user does not feel the heat, and the gel is well fixed, so the risk of treatment failure or burns can be significantly reduced.

[0053] In one embodiment, the nail curing device (100) according to one embodiment of the present invention may further include a sensor (140) that detects when a user's hand or foot is received in the curing space (102).

[0054] The sensor (140) may be a sensor provided within the housing (110) to detect when an object enters the curing space (102). The control unit (130) may control the curing process by turning on or off a plurality of light sources (120) according to the detection signal of the sensor (140). For example, even if an operating mode is implemented to perform the curing process for 30 seconds, the control unit (130) may not perform the curing process by not turning on the light source (120) if there is no detection signal from the sensor (140). When a user's hand or foot enters the curing space (102), the sensor (140) may detect that the user's hand or foot has been received in the curing space (102) and generate a detection signal. The control unit (130) may proceed with the curing process and turn on the light source (120) according to the detection signal of the sensor (140). During the curing process, if a user removes their hand or foot from the curing space (102), the sensor (140) detects this, and the control unit (130) can temporarily suspend the ongoing curing process by turning off the light source (120). At this time, the remaining time of the curing process may also be temporarily suspended. In this way, since the curing process starts and stops in accordance with sensor detection, it can be cured accurately for only the required amount of time. In one embodiment, the sensor (140) may be an image sensor, and the number and intensity of the light source (120) that lights up can be adjusted according to the size of the user's hand or foot entering the curing space (102).

[0055] In one embodiment, the control unit (130) can perform a curing process by illuminating a plurality of light sources (120) based on user input, while ignoring whether the sensor (140) detects.

[0056] The user can operate the nail curing device (100) to operate in a continuous mode through the function control unit (112). The continuous mode may be an operating mode that performs the curing process while ignoring detection by the sensor (140) during the curing process. In the continuous mode, since the detection signal of the sensor (140) is ignored, the light source can continue to be lit until the set curing time is finished, even when the user's hand or foot is removed.

[0057] The continuous mode allows for convenient use even when curing small parts or thin materials that are difficult for the sensor to detect, and since the device does not turn off even if no sensor detects anything, curing can be performed freely at precise locations.

[0058] FIG. 6 is a diagram showing the arrangement of a first group light source and a second group light source of a nail curing device according to one embodiment of the present invention.

[0059] Referring to FIG. 6, in one embodiment of the present invention, a plurality of light sources (120) may include a first group of light sources (121) that irradiate light of ultraviolet wavelength and a second group of light sources (122) that irradiate light of visible wavelength.

[0060] The first group light source (121) can be placed in the area of ​​the inner wall (103) of the curing space (102) that is irradiated to the user's fingernails or toenails, as it emits UV light that is actually necessary for the curing process. The second group light source (122) emits visible light wavelengths and can be placed in the upper area of ​​the inner wall (103) where the back of the hand or the back of the foot is located. The first group light source (121) intensively irradiates the user's fingernails or toenails to cure the gel, and the second group light source (122) illuminates the area around the back of the hand or the back of the foot by emitting visible light without ultraviolet rays, thereby minimizing the risk of tanning and burns.

[0061] By concentrating and limiting the area exposed to ultraviolet rays to the fingernail or toenail area, ultraviolet exposure to areas excluding the fingernail or toenail is minimized, thereby significantly reducing skin tanning, burns, and heat sensation. Additionally, if only ultraviolet rays are emitted from the light source (120), it may be difficult for the user to easily recognize whether the curing process is in progress; however, since the second group light source (122) emits visible light, it can visually indicate that the curing process is in progress, and both the user and the operator can easily recognize this.

[0062] The arrangement of the first group light source (121) and the second group light source (122) shown in FIG. 6 is one embodiment and is not limited to the positions and arrangement shown in FIG. 6. Depending on the embodiment, the positions and number of the first group light source (121) and the second group light source (122) may vary.

[0063] FIG. 7 is a drawing showing a state in which a user places their hand on a pad of a nail curing device according to one embodiment of the present invention, and FIG. 8 is a drawing showing the pad separated from the housing of a nail curing device according to one embodiment of the present invention. FIG. 9 is a drawing showing a foot placed in a nail curing device with the pad separated.

[0064] Referring to FIGS. 3, 7 to 9, in one embodiment, the housing (110) may include a pad (114) forming one side of the curing space (102). The pad (114) may be for supporting the hand when a user puts their hand into the curing space (102).

[0065] On one side of the pad (114), a guideline (114a) that the user can perceive may be formed protruding to align the user's fingernails with the position where the first group light source (121) is placed. As shown in FIG. 7, the guideline (114a) may be formed as a conspicuous protrusion or embossed shape on the upper surface of the pad (114), which is the surface where the user places their hand. The guideline (114a) guides the position of the palm and fingers, and in particular helps to accurately align the fingernail area with the area illuminated by the first group light source (121). When the user places their hand into the curing space (102), they can naturally position their fingers along the guideline (114a). Since the guideline (114a) is protruding, it can also be perceived by touch, allowing the user to position their hand without looking.

[0066] The guideline (114a) allows even a beginner to place their finger in the correct position simply by following the guideline, thereby helping to easily use the nail curing device (100) without any special skills, and since the finger is placed in the intended position, unnecessary exposure to ultraviolet rays on skin other than the fingernail can be reduced.

[0067] In one embodiment, the pad (114) may be detachably mounted to the housing (110). The detachable pad (114) may be used to place the user's foot into the curing space (102). Generally, when curing hands, the pad (114) is used in a mounted state, but a large space may be required to cureze feet. When the pad (114) is detached, the width and height of the entrance to the curing space (102) are relatively secured, making it easier for the user to easily insert and remove their foot.

[0068] FIG. 10(a) is a side view showing a leg unfolded in a nail curing device according to one embodiment of the present invention, FIG. 10(b) is a partial enlarged view showing the leg in a folded state, and FIG. 10(c) is a partial enlarged view showing the leg in an unfolded state.

[0069] Referring to FIG. 10, in one embodiment of the present invention, the housing (110) may include a plurality of legs (115) so as to adjust the height of the housing (110) according to the foot of a user accommodated in the curing space (102).

[0070] Multiple legs (115) are rotatably connected to the lower surface of the housing (110) so as to rotate from a storage position to a usage position, and support the housing (110) in the usage position to adjust the height of the housing (110). In the storage position, the legs (115) are almost flush with the bottom surface of the housing (110) or folded, so the height of the device can be minimized. The user can rotate the legs (115) to unfold them to the usage position as needed. At this time, depending on the length or angle of the legs (115), the height at which the bottom surface of the housing (110) is lifted from the ground may vary. When curing a nail product on the foot, the curing space (102) can be used more comfortably by unfolding the legs (115) to match the height or angle of the instep.

[0071] A nail curing device according to one embodiment of the present invention can improve safety of use by significantly reducing side effects such as skin heat sensation, burns, and tanning through an operating mode that repeatedly turns on and off and an irradiation area in which ultraviolet and visible light are separated.

[0072] In addition, precise curing time can be secured through the detection sensor, double-sided display placement, and start / end patterns, and the operator's procedure flow can be made smoother.

[0073] In addition, the detachable pad and height-adjustable legs allow for treatment of both hands and feet, and the continuous mode enables the curing of special parts, expanding the range of applications for the device.

[0074] In addition, it can provide a comfortable and safe nail art experience through softly brightening lighting, minimized heat sensation, and improved visibility during the procedure.

[0075] 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. Explanation of the symbols

[0076] 100: Nail curing device 101: Opening 102: Curing space 103: Interior wall 110: Housing 111: Power control unit 112: Function Control Panel 113a: First display 113b: Second display 114: Pad 115: Leg 120: Light source 121: Group 1 Light Source 122: Group 2 Light Source 130: Control unit 140: Sensor

Claims

Claim 1 A nail curing device comprising: a housing having an opening and a curing space provided therein for receiving a user's hand or foot through the opening; a plurality of light sources provided within the housing and performing a curing process by irradiating light into the curing space to cure a nail product applied to the user's fingernail or toenail; and a control unit for controlling the plurality of light sources to perform the curing process. Claim 2 A nail curing device according to claim 1, wherein the control unit controls the plurality of light sources to repeatedly turn on the plurality of light sources for a first time and turn off the plurality of light sources for a second time in order to protect the user's hand or foot contained in the curing space from burns while the curing process is performed. Claim 3 A nail curing device according to paragraph 2, wherein the first time is 0.6 seconds to 1 second and the second time is 1 second to 2 seconds. Claim 4 A nail curing device according to claim 1, further comprising a sensor provided within the housing and detecting that the user's hand or foot is received in the curing space, and the control unit controls the curing process by turning on or off the plurality of light sources according to the detection signal of the sensor. Claim 5 A nail curing device according to claim 4, wherein the control unit controls the plurality of light sources to operate in a continuous mode that performs the curing process by illuminating the plurality of light sources while ignoring whether the sensor detects the input of the user. Claim 6 A nail curing device according to claim 1, wherein the housing comprises a plurality of displays for displaying information about the curing process, and the plurality of displays comprises a first display disposed on the upper surface of the housing and a second display disposed on the opposite side of the opening so that a practitioner performing nail art on the user can recognize it. Claim 7 A nail curing device according to claim 1, wherein the plurality of light sources includes a first group of light sources that irradiate light of ultraviolet wavelength and a second group of light sources that irradiate light of visible wavelength, wherein the first group of light sources is positioned in an area irradiated to the user's fingernail or toenail in the curing space, and the second group of light sources is positioned in an area irradiated to the user's hand or foot back in the curing space. Claim 8 A nail curing device according to claim 1, wherein the housing comprises a pad forming one surface of the curing space, and the pad has a guideline protruding so as to be perceived by the user to align the user's fingernail in the correct position. Claim 9 A nail curing device according to claim 1, wherein the housing comprises a pad forming one side of the curing space, and the pad is detachable from the housing to allow the user to easily place their foot into the curing space. Claim 10 A nail curing device according to claim 9, wherein the housing comprises a plurality of legs so as to be able to adjust the height of the housing according to the user's foot accommodated in the curing space, and the plurality of legs are rotatably connected to the lower surface of the housing so as to rotate from a storage position to a usage position, and support the housing in the usage position to adjust the height of the housing. Claim 11 A nail curing device according to claim 1, wherein the control unit controls the plurality of light sources so that the plurality of light sources light up in a starting pattern when the curing process starts, and controls the plurality of light sources so that the plurality of light sources light up in a ending pattern different from the starting pattern when the curing process ends. Claim 12 A nail curing device according to claim 11, wherein the start pattern is a pattern in which the plurality of light sources flash for a predetermined time and brighten from low brightness to high brightness, and the end pattern is a pattern in which the plurality of light sources flash for a predetermined time and darken from high brightness to low brightness.

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