Cosmetic device

Abstract

[Problem] To provide a comb-like cosmetic device which has two or more functions including a heating function and an ultrasonic vibration function in a composite manner, and which is capable of obtaining a greater beautifying effect than when the functions are used separately. [Solution] The present invention provides a cosmetic device 1 having a comb part 10, wherein teeth 12 of the comb part 10 are composed of a thermally conductive material, and the cosmetic device includes a heating means 111 for heating base parts of the teeth 12, and includes a vibration means 110 for vibrating the teeth via the base parts.

Description

Beauty device

[0001] This invention relates to a comb-shaped beauty device that can comb the user's hair and provide beauty benefits to the hair and scalp.

[0002] Beauty devices that apply pulsed electricity to the skin to cause muscle contractions (EMS: Electrical Muscle Stimulation) have long been known to promote lymphatic fluid flow, provide treatments such as fatigue recovery, and strengthen muscles.

[0003] Furthermore, Patent Document 1 discloses a vibrating hairbrush that stimulates the scalp through vibration while brushing. According to this vibrating hairbrush by the present applicant, it is possible to stimulate the scalp from various directions and also to vibrate at high frequencies, thereby obtaining a variety of effects.

[0004] Although Patent Document 2 does not target the scalp, it discloses a pinhead for a massager in which multiple pins make uniform contact with the contours of soft skin and muscles such as the cheeks, providing comfortable vibrations and electrical stimulation without causing discomfort, thereby relieving fatigue and other ailments.

[0005] Patent Document 3 is a patent by the applicant in this case that discloses a technology for applying an electrical beauty effect from the pins of a brush equipped in a beauty device. It proposes incorporating an elastic body made of conductive silicone resin along the axial direction of the pins, and applying an electrical current from the main body's current-carrying circuit through the elastic body to the electrode area to exert a beauty effect on the target area.

[0006] Patent Document 4 discloses a bioelectric stimulator comprising a power supply, a conductive support portion electrically connected to the power supply, and a plurality of conductive pins electrically connected to the support portion, wherein each pin acts as an electrode to a living body, the support portion forms part of a closed circuit in which current from one pole of the power supply passes through the support portion and returns to the other pole of the power supply when none of the plurality of pins are in contact with the living body, and when any two or more of the plurality of pins are in contact with the living body, the living body becomes an electrical conduction path between the contacting pins and forms part of a closed circuit.

[0007] Patent Document 5 discloses an electrical stimulation device comprising a main body and a brush section, wherein the main body is equipped with a pulse wave generating section, and the brush section is equipped with a plurality of brush bristles, the tips of the brush bristles are equipped with energizing sections, the energizing sections are electrically connected to the pulse wave generating section, and the pulse wave generating section repeatedly generates pulse waves of different frequencies multiple times.

[0008] Patent Document 6 discloses a heated hairbrush that includes a heated protrusion, a non-heated protrusion, and a control unit for controlling the temperature of the heated protrusion. In particular, it is characterized by having a mechanism for controlling the positions of the heated and non-heated protrusions, as well as controlling the temperature of each protrusion.

[0009] Patent Document 7 discloses a vibrating hairbrush in which an ultrasonic vibration source and a mechanical vibration source are built into the internal space of the brush body, a plate-shaped support that closes the internal space of the body is attached to the body so as to be elastically flexible in the thickness direction of the plate, the ultrasonic vibration source and the mechanical vibration source are attached to the inner surface of the support, and a plurality of brush strips are provided extending from the outer surface of the support, wherein the ultrasonic vibration source is located in the center of the support.

[0010] Japanese Patent Publication No. 2013-188250, Patent No. 5789064, Patent No. 7522152, Patent No. 7084666, Patent No. 7489427, Japanese Patent Publication No. 2024-506634, Patent No. 4974353

[0011] Prior art documents such as these disclose brushes that apply electrical stimulation to the scalp from the pins, brushes with a function to heat the scalp and hair, brushes that apply ultrasonic vibrations, and hairbrushes with each of these functions. On the other hand, there are no documents that have a heating function, an ultrasonic vibration function, and also the ability to apply electrical stimulation.

[0012] Furthermore, all of the above are hairbrushes, not combs, which are not shaped to detangle hair. Hairbrushes have numerous pins or bristles on the handle and are used to add volume, shine, or massage the scalp. Combs typically have many teeth arranged in a row along a single rod, with the spacing between the teeth adjusted according to the purpose. General combs are mainly used to detangle hair and are suitable for untangling, styling, and preparing hair for styling. Thus, hairbrushes and combs have different uses, and beauty devices that can be used as combs rarely also have a beauty effect on the scalp.

[0013] The present invention aims to provide a comb-shaped beauty device that has two or more functions, including a heating function and an ultrasonic vibration function, in combination, and can achieve a higher beauty effect than when these functions are used separately.

[0014] To solve the above problems, the present invention provides the following comb-shaped beauty device. According to a first embodiment of the present invention, the beauty device has a comb portion, wherein the teeth of the comb portion are made of a heat-conductive material, and the device is equipped with a heating means for heating the base of the teeth, and a vibrating means for vibrating the teeth via the base. Here, the teeth of the comb portion are arranged in a straight line.

[0015] According to a second embodiment of the present invention, the teeth of the comb can be arranged in a single row, and the teeth can be shaped to make direct contact with the user's hair. It is particularly preferable that the sides of the teeth make contact with the user's hair.

[0016] According to a third embodiment of the present invention, a temperature sensing means is provided on the tooth or near the boundary between the tooth and the base, and the heating means can be controlled according to the detection result by the temperature sensing means.

[0017] According to a fourth embodiment of the present invention, the distance between the vibrating means and the base can be set to an odd multiple of one-quarter wavelength of the vibration period.

[0018] According to a fifth embodiment of the present invention, when the vibrating means vibrates at two or more frequencies, the distance from the base can be set to an odd multiple of one-quarter wavelength of each vibration period.

[0019] According to a sixth embodiment of the present invention, the beauty device is equipped with a current generating means, and at least a portion of the teeth that conduct electricity with the current generating means is conductive, thereby providing a beauty device that applies an electrical effect such as electrical stimulation to the user's scalp from the teeth.

[0020] According to the seventh embodiment of the present invention, the entire tooth may be made conductive.

[0021] According to the eighth embodiment of the present invention, a portion of the teeth constitutes a first electrode, and another portion of the teeth constitutes a second electrode, and an electrical effect is applied by passing current between the first electrode and the second electrode.

[0022] According to the ninth embodiment of the present invention, the device comprises a vibrating means for vibrating the comb teeth and a heat dissipation means for releasing heat from the comb teeth toward the outside of the machine, wherein the total mass m (kg) of the comb teeth and the vibrating means, the frequency f (Hz), and the energy P (W) applied to the vibrating means are P / (mf 2 ) ≥ 6.3 × 10 -10 It can be configured in such a way that the desired amplitude can be obtained with less energy, and the beauty effects can be enhanced efficiently.

[0023] According to the tenth embodiment of the present invention, the comb teeth include a first comb tooth and a second comb tooth that vibrates by the vibrating means, the first comb tooth is fixed to the comb housing, and the scalp-side end of the first comb tooth can be brought closer to the scalp than the scalp-side end of the second comb tooth. This makes it easier for the second comb tooth to vibrate without contacting the scalp, thereby reducing unpleasant vibrations to the scalp while obtaining the desired beauty effect.

[0024] According to the eleventh embodiment of the present invention, the second comb teeth are configured to extend from the outer surface of the comb housing and include teeth that directly contact the user's hair, a waterproof member that seals the space between the comb housing and the second comb teeth, and a holding member that supports the second comb teeth in a vibrating state. When viewed from the scalp side, the teeth, waterproof member, and holding member can be arranged in that order. This makes it possible to achieve high reliability and beauty effects while maintaining both waterproofness and a vibration mechanism.

[0025] According to the twelfth embodiment of the present invention, the waterproofing member can be made of a material or shape that is more rigid and less prone to deformation than the retaining member. This makes it easier to maintain waterproofing performance even when external forces are applied, and improves the stability and durability of vibration operation.

[0026] The present invention, with the above configuration, provides the following effects. Specifically, the beauty device of the present invention is equipped with a heating means and a vibration means, and can exert the desired beauty effect simply by combing the hair with the comb part. In particular, by using the comb when penetrating liquids such as treatments into the hair, the pressure, temperature, and ultrasonic waves applied to the hair passing through the teeth of the comb become constant, resulting in an even finish. In this respect, it can provide a better beauty effect than hair irons that clamp the hair, where the pressure applied to the hair increases or decreases depending on the strength of the user's grip, or hairbrush-type beauty devices, where the hair becomes prone to tangling when wet with liquid treatment agents.

[0027] By equipping the device with both a heating means and a temperature sensing means, precise temperature control can be performed while taking into account the heat generated from the vibration means. At the same time, it prevents the performance of the vibration means from degrading due to the heat from the heating means, and allows heating and vibration to be applied simultaneously even in comb-shaped beauty devices.

[0028] In this way, even if the vibration mechanism is designed to produce high output to enhance the penetration effect, when the comb's temperature rises due to the heat generated by the vibration mechanism, the output of the heating mechanism is reduced, preventing the comb from overheating and damaging the user's scalp and hair, and also preventing a decrease in the vibration performance of the vibration mechanism. In addition, if the comb touches wet hair and its temperature drops, the temperature detection mechanism detects this and increases the output of the heating mechanism, allowing the comb and hair to heat up quickly, thereby enhancing the penetration effect of active ingredients into the hair, maintaining the optimal working temperature, and improving safety.

[0029] When vibrating a comb-shaped beauty device with a long longitudinal length, conventional methods used vibration mode technology to excite the comb. To facilitate the establishment of vibration modes, the comb was excited at low frequencies of tens to hundreds of Hz, ensuring that the antinodes and nodes of the amplitude were appropriately separated. While these low frequencies are known to be advantageous for repelling sebum and other substances, they are not suitable for penetration. A drawback is that it is difficult to excite the comb at high frequencies such as 1 MHz, which are suitable for penetrating active ingredients into the hair.

[0030] Therefore, in this invention, by setting the distance between the vibrating means and the base of the tooth to an odd multiple of one-quarter wavelength of the vibration period, vibration can be applied efficiently. When the vibrating means vibrates at two or more frequencies, setting the distance to the base to an odd multiple of one-quarter wavelength of each vibration period has a similar effect.

[0031] Furthermore, by equipping the beauty device with an electric current generating mechanism and applying an electrical effect to the user's scalp through the teeth of the comb, it is possible to comb the hair with the comb while simultaneously applying electrical stimulation to the scalp. Conventionally, when a vibrating mechanism was applied to the hair, there was a problem in that the EMS electrodes tended to separate from the scalp. By making the beauty device comb-shaped, it is possible to apply vibration to the hair while applying the tips of the comb to the scalp to effectively apply an electrical effect. In addition, the effect of the electrical effect can be further increased by heating the scalp with a heating mechanism.

[0032] The relationship between the total mass of the comb teeth and the vibrating mechanism, the frequency, and the energy applied to the vibrating mechanism is P / (mf 2 ) ≥ 6.3 × 10 -10 By configuring it in this way, sufficient amplitude can be obtained with less energy. Therefore, even at high-frequency excitation, vibration energy can be efficiently transmitted to the hair, achieving a highly penetrating beauty effect, while also contributing to a reduction in power consumption.

[0033] Fix the first comb teeth that do not vibrate to the comb housing, and make the scalp-side end closer to the scalp than the second comb teeth that vibrate. In this way, it is possible to prevent the second comb teeth from directly contacting the scalp. Therefore, while reducing unnecessary vibration and irritation to the scalp, sufficient vibration can be applied to the hair, achieving both comfort and beauty effects.

[0034] Seal the space between the second comb teeth and the comb housing with a waterproof member, provide a holding member that supports the second comb teeth in a vibratable state, and arrange them in the order of teeth, waterproof member, and holding member from the scalp side. In this way, both waterproofness and a vibration mechanism can be achieved. As a result, it can operate safely and stably even in a wet state or when using a liquid agent, and the reliability is improved even during long-term use.

[0035] By making the waterproof member a material or shape that is more rigid and less likely to deform than the holding member, deformation due to external force or heat can be prevented, and a decrease in waterproof performance can be suppressed. As a result, a stable waterproof effect can be ensured over a long period while maintaining vibration performance and durability.

[0036] Bottom-side perspective view of the beauty device according to the present invention. Planar-side perspective view of the beauty device according to the present invention. Exploded explanatory view showing the structure of the comb part. Cross-sectional view showing the aspect of the electrodes of the comb part. Diagram showing the vibration waveform of ultrasonic vibration in the embodiment. Explanatory view of the front cross-section showing the structure of the comb part. Explanatory view of the left-side cross-section showing the structure of the comb part. Exploded explanatory view showing the structure of the comb part. Exploded explanatory view showing the arrangement configuration of the comb teeth, vibration means, and heat dissipation means according to the second embodiment. Explanatory view of the left-side cross-section of the comb part according to the second embodiment.

[0037] Hereinafter, embodiments of the present invention will be described based on the examples shown in the drawings. Note that the embodiments are not limited to the following. FIG. 1 is a bottom-side perspective view of a beauty device (1) according to the present invention, and FIG. 2 is the same, a planer-side perspective view. The beauty device (1) of this embodiment has a substantially rod-shaped outer shape and is a comb-shaped beauty device (1) composed of a comb part (10) on one end side and a grip part (20) on the other side. In the following description, the direction will be described with the front-side surface on the near side in FIG. 1 as the front side.

[0038] The comb part (10) is composed of a columnar comb part housing (11) on the planar side and a large number of teeth (12) erected from the comb part housing (11) toward the bottom side. As will be described later, the comb part housing (11) houses vibration means, heating means, etc. according to the present invention.

[0039] On the other hand, the gripping part (20) has a non-slip part (21) for placing fingers on the bottom side in a form that is grasped by the user's hand in the circumferential direction, and a mode switch (22) and a power switch (23) on the planar side. With this configuration, the user can firmly hold the beauty device (1) and apply the comb part to the hair and comb it like an ordinary comb.

[0040] In the present invention, it is preferable that the teeth of the comb part (10) are arranged in a single row in a straight line. At this time, the interval between the teeth (the width of the space between the teeth) is 1 mm to 10 mm, particularly 2 mm to 6 mm is optimal. If the interval is wider than this, although it has the function as a comb, the heating action and vibration action according to the present invention cannot be sufficiently transmitted to the hair. On the contrary, if the interval is narrower than this, it is easy to catch fine or short hair and can be effectively arranged. However, wet hair with a liquid treatment agent is likely to get caught, and it is not preferable as a beauty device because it can damage the cuticle of the hair by friction and locally heat the hair.

[0041] In this embodiment, since the teeth (12) are arranged in a single row, even when the comb part (10) falls forward or backward with respect to the scalp, the teeth (12) are difficult to separate from the scalp, and the desired effect can be obtained without worrying about the operation. Note that the teeth of the comb part (10) do not necessarily have to be in a single row.

[0042] The interval between the teeth of the comb is about 1 mm to 2 mm for fine teeth, 2 mm to 4 mm in the middle, and about 4 mm to 8 mm for wide teeth. However, the teeth (12) in this embodiment are about 4 mm, and generally, the comb part (10) is slightly wider.

[0043] Furthermore, the tips of the teeth (12) are curved in height. That is, the central part (12a) in the direction of the comb's arrangement is the lowest in height, while the ends (12b) (12c) are higher. This configuration has the following advantages: (a) Smoother hair passage: The curved tips glide along the surface of the hair, making it less likely to snag and allowing the comb to pass through smoothly. (b) Even stimulation of the scalp: The curved tips evenly distribute pressure on the scalp, resulting in a scalp massage effect, promoting blood circulation and relaxation. (c) Reduced hair damage: The absence of sharp corners reduces damage to the hair and scalp. In particular, it is effective in preventing snagging and breakage when combing. (d) Easier detangling: When detangling tangled hair, the curved tips gently loosen the hair and prevent snagging, making detangling smoother. (e) Enables uniform styling: The curved teeth evenly arrange the hair, making styling easier and resulting in a beautiful finish.

[0044] Furthermore, the tip side (left side) (12d) of the comb is higher than the handle side (right side) (12e) of the comb. This allows the tip of the comb to naturally come close to the user's scalp when the user holds the handle (20) and applies the comb to their scalp. In other words, the user does not need to lift the handle more than necessary to make the comb close to their scalp, making it easy to operate and ensuring a reliable effect.

[0045] Furthermore, the ends (12d) and (12e) of the ends (12b) and (12c) are plate-shaped and thick, and have the tallest teeth. Rather than functioning to comb the hair, this part prevents hair from getting caught at the beginning and end of combing, protects and stabilizes the thin teeth, and enables smooth operation. Moreover, even if the product is dropped, the ends (12d) and (12e) will be hit before the teeth (12), so the heater (111) and piezoelectric vibrator (110) located on the teeth (12) can be protected, and the durability of the comb part (10) can be increased.

[0046] The gripping portion (20) can be equipped with a rechargeable battery, a current generating means, and a control means. A charging connector is provided on the right side for external power supply, allowing the internal rechargeable battery to be charged and used. However, the power supply method of the present invention is not limited.

[0047] In this invention, a non-slip portion (21) is provided on the grip portion (20) near the comb portion (10). The non-slip portion (21) is formed by two consecutive indentations to prevent the user's fingers (especially the index and middle fingers) from slipping in the longitudinal direction. At the same time, the non-slip portion (21) is located near the center of gravity, which is the point where the contents such as the rechargeable battery and the comb portion (10) can be balanced. As a result, the user can hold the hair styling device (1) in a balanced manner simply by holding the non-slip portion (21), allowing them to concentrate on hair styling and reducing fatigue.

[0048] As a means of generating current, the device includes a current generation circuit for exerting an electrical beauty effect, as will be described later. The control means is a known control circuit that performs control in response to the operation of the mode switching switch (22) and the power switch (23), as well as control based on signals from sensors, etc.

[0049] In this invention, the comb portion (10) and the gripping portion (20) do not need to be clearly separated; for example, they may be configured to grip the comb portion housing (11). Also, the current generation circuit and control circuit may be located inside the comb portion housing (11) or in a position that spans both the comb portion (10) and the gripping portion (20).

[0050] Furthermore, the comb portion (10) and the gripping portion (20) may be separable, and the comb portion (10) may be provided as an attachment. In this case, for example, power supply and operation are performed from the gripping portion (20), and power and signals are transmitted to the comb portion (10) through contacts. The comb portion (10) may be replaceable depending on the application.

[0051] Figure 3 is an exploded view illustrating the structure of the comb section (10), showing the inside of the comb section housing (11). Figure 4 is a cross-sectional view showing the configuration of the electrodes of the comb section. A piezoelectric vibrator (110) is positioned on the flattest side inside the comb section housing (11) as a vibration means. Current is applied to the piezoelectric vibrator (110) by control of the control circuit to generate ultrasonic vibrations.

[0052] In addition to a piezoelectric vibrator, the vibration means in this invention may also be a DC motor vibration device, an eccentric rotating mass (ERM) motor, a linear vibration motor, a sonic vibration motor, or the like. In this embodiment, the piezoelectric vibrator (110) generates ultrasonic vibrations to promote the penetration of treatment agents and hair care products. By effectively penetrating the treatment components into the hair, the moisturizing and repairing effects of the hair can be enhanced.

[0053] Furthermore, by vibrating the teeth (12) with ultrasonic waves, the teeth come into contact with the scalp, promoting blood circulation in the scalp, cleansing pores, stimulating hair growth, and even promoting hair thickening. Compared to the configuration of conventional hair irons and hairbrushes, the comb-shaped beauty device ensures that the teeth make firm contact with the hair and scalp, greatly improving the beauty effects of the vibrations.

[0054] A heater (111), which is a heating means, is built between the piezoelectric vibrator (110) and the teeth (12). As shown in the figure, the heater (111) is installed laterally in the direction of the tooth arrangement length.

[0055] In this invention, it is important that the teeth (12) and the heater (111) are placed close together, and the piezoelectric vibrator (110) is positioned to sandwich the heater (111). The piezoelectric vibrator (110) generates heat when it operates continuously, and at the same time, its operating efficiency deteriorates when it becomes hot. Therefore, the piezoelectric vibrator (110) is placed on the back side of the heater (111), so that the heat from the heater (111) is directly transferred to the teeth (12). With this arrangement, the heat from the piezoelectric vibrator (110) is transferred to the back side of the heater (111), supplementing the amount of heat generated from the heater (111), preventing unnecessary temperature rise, and contributing to power saving.

[0056] At the same time, conventional hairbrushes and hair irons have vibration mechanisms that are placed away from the heater to prevent overheating. However, this structure has the problem that the distance between the vibration mechanism and the brush or iron part is large, resulting in uneven vibration transmission and inefficient vibration transmission. The present invention solves the overheating problem while placing the piezoelectric vibrator (110) close to the teeth (12), and has a major advantage in that it can be compactly housed within the comb housing (11).

[0057] As shown in Figure 4, the base of the tooth (12) is in direct contact with the heater (111), so that the entire tooth (12) is heated. For this reason, it is desirable that the tooth (12) has a thermal conductivity of a predetermined value or higher. That is, if the tooth is made of iron, the thermal conductivity is about 50-80 W / (m·K), if it is made of aluminum it is about 235 W / (m·K), and if it is made of copper it is about 390-400 W / (m·K). The tooth (12) of the present invention is preferably made of a material with a thermal conductivity of a similar degree to these materials, i.e., a thermal conductivity in the range of 50-400 W / (m·K).

[0058] It is preferable to provide a common base (121a), (123a), (125a) on some of the teeth (12) so that the heat from the heater (111) and the vibration from the piezoelectric vibrator (110) are transmitted to the teeth via the common base (121a), (123a), (125a). By using the common base, the heat and vibration are transmitted evenly to each tooth, allowing for a uniform beauty effect on the hair and scalp.

[0059] A thermistor (112), which is a temperature sensing means, is placed near the base of the teeth and the boundary between the teeth. The thermistor (112) measures the temperature at its installation location, and the control circuit controls the output of the heater (111) according to the measurement result. In this invention, due to the structure of the comb portion (10), heat is easily dissipated from the teeth, similar to heat dissipation fins, and the temperature drops rapidly when it comes into contact with wet hair. Therefore, it is preferable to place the thermistor (112) as close to the teeth as possible, rather than on the heater (111).

[0060] It is preferable to install a thermistor (112) near the boundary between the tooth and the base of the tooth, and to control the temperature of the tooth base to 50 to 70 degrees and the tooth tip temperature to 40 to 50 degrees. If the temperature of the thermistor (112) is set to 60 degrees, for example, the temperature of the tooth base can be lowered to 50 degrees and the tip to 42 degrees, so that the penetration of active ingredients into the hair is promoted at the base, while the tip that comes into contact with the scalp is maintained at a temperature that does not cause low-temperature burns, thereby achieving both the penetration effect and safety of the beauty serum. The present invention is characterized in that the control circuit has a relationship between the thermistor measurement result and the tip temperature in advance and controls the tip temperature to be appropriate.

[0061] As described above, the present invention provides a comb-shaped beauty device equipped with both a heating means and a vibration means. In contrast, conventional hair iron-type ultrasonic hair treatment devices that are used by clamping the hair tend to produce uneven results because the way vibrations and heat are transmitted changes depending on the force used to clamp the hair. Furthermore, although the force applied to the hair can be kept constant by using a comb shape, applying vibration and heat simultaneously presents challenges such as the overheating of the vibration means and difficulty in evenly distributing heat. The above configuration of the present invention solves these problems and achieves a uniform penetration effect of the beauty serum by heating with teeth formed from a heat-conductive material while vibrating with a piezoelectric vibrator.

[0062] The present invention can also apply electrical effects, such as EMS, to the hair and scalp through the teeth. To achieve this, an electric current can be applied to the teeth from a current generating circuit, thereby exerting an electrical effect through the teeth. In other words, the present invention provides a comb-shaped beauty device (1) that applies electrical effects in addition to heating and vibration.

[0063] In Figure 4, the teeth (12) also function as electrodes of first and second polarity. Specifically, they are divided into first electrodes (120), (122), (124), and (126) which have the first polarity, and second electrodes (121), (123), and (125). Each first electrode is a single tooth, and the four teeth between the first electrodes are the second electrodes. The bases of the first electrodes (120), (122), (124), and (126) are insulated from the second electrodes by rubber packing insulators (120a), (122a), (124a), and (126a), respectively. By applying a desired voltage waveform between the first and second electrodes through an electrical path (not shown), beauty effects other than hair penetration can be achieved.

[0064] By alternating the first electrodes (120), (122), (124), (126) and the second electrodes (121), (123), (125) in this manner, uniform current can be supplied between the first and second electrodes. Alternatively, instead of alternating, the polarity may be divided into the right and left halves in the diagram, or all teeth may be assigned the first polarity, and electrodes for the second polarity may be provided on the gripping part (20), allowing current to flow between the gripping hand and the teeth.

[0065] A current suitable for EMS is passed between the first electrodes (120), (122), (124), and (126) and the second electrodes (121), (123), and (125). In EMS, electrical stimulation at frequencies ranging from a few Hz to a few kHz is applied to the skin to induce muscle contraction and muscle movement. As EMS is a well-known concept, a detailed explanation will be omitted, but general waveforms, frequencies, and voltages can be applied as appropriate.

[0066] The electrical effects of the present invention are not limited to EMS; for example, a pulsed current suitable for iontophoresis, such as an output voltage of about 5V and a frequency of 1.5kHz, may be applied. Furthermore, a higher frequency band may be used to provide a thermal effect and exert an RF cosmetic effect that enhances skin firmness and elasticity. In this case, a high frequency in the range of 1MHz to several tens of MHz is applied.

[0067] These electrical effects are particularly effective in the beauty device of the present invention, which is equipped with a comb section. In other words, while conventional hairbrush-type beauty devices can have the tips of their bristles touch the scalp, the arrangement of the bristles in a planar manner resulted in inconsistent contact with different hairs. Furthermore, because the electrodes were located at the tips of the bristles, it was difficult to apply them to the hair.

[0068] In contrast, with a comb-shaped hair styling device, the sides of the teeth can make even contact with the hair for an extended period of time when combing. A consistent amount of hair enters the spaces between the teeth of the comb, allowing for significantly more stable contact between the electrodes and the hair than with a hairbrush. Furthermore, the tips of the row of teeth make even contact with the scalp, allowing for even application to the scalp as the hair is combed.

[0069] Finally, the ultrasonic vibration and the structure suitable for vibration in the present invention will be described. Figure 5 is a diagram showing the vibration waveform of ultrasonic vibration in this embodiment, and Figures 6, 7, and 8 are explanatory diagrams showing the structure of the comb. In the figures, the center of gravity of the piezoelectric vibrator (110) is located at the center of the tooth row direction of the upright teeth (12). This ensures that the teeth (12) transmit uniform vibration from the left side to the right side.

[0070] To explain in detail using Figure 8 as a reference, the second electrodes (121, 123, 125) of the teeth (12) are erected from a wide, flat vibration transmission plate (127) in the left-right direction, passing through the base of the teeth (128). The first electrodes (120, 122, 124, 126) are erected downward from a U-shaped support (129) that surrounds the vibration transmission plate (127), and are supported independently of the second electrodes (121, 123, 125).

[0071] The first electrode (120) is positioned at the right end of the tooth (12) and is the longest. The first electrode (122) is positioned between the second electrode (121), which consists of three teeth, and then the first electrode (124) is positioned between the second electrode (123), which consists of four teeth. The height of the teeth gradually decreases in an arc shape up to the first electrode (124), which is the shortest. Further along, the first electrode (126) is positioned at the right end (gripping side) between the second electrode (125), which consists of four teeth. The height of the teeth of the second electrode (125) and the first electrode (126) gradually increases in an arc shape again, but the length of the first electrode (126) is about the same as or slightly shorter than the first electrode (122). In the end, the first electrode (120) on the right end is the longest, forming an asymmetrical arc-shaped dental arch.

[0072] Horizontally elongated piezoelectric vibrators (110A) and (110B) are attached to both the front and rear surfaces of the vibration transmission plate (127). In this embodiment, the piezoelectric vibrator (110A) on the front side, visible in Figure 8(A), generates vibrations at 1 MHz, and the piezoelectric vibrator (110B) on the back side, visible in Figure 8(B), generates vibrations at 116 kHz. The piezoelectric vibrators (110A) and (110B) vibrate the vibration transmission plate (127) in the front and back directions, thereby transmitting vibrations to the teeth (12).

[0073] A heater (111) is attached directly below the piezoelectric vibrator (110B). As described above, the heater (111) is placed on the base (128) or in the part closest to the base (128) in order to maximize the efficiency of heat transfer.

[0074] In this embodiment, two thermistors (112A) and (112B) are also provided. The thermistor (112A) on the near side measures the temperature of the base (128) of the second electrode (123) on the side opposite to the heater (111). This makes it possible to measure the actual temperature of the second electrode (123) without being directly affected by the heater (111).

[0075] On the other hand, the thermistor (112B) on the rear side is mounted on the heater (111) and measures the temperature of the heater (111) itself. Based on these two temperature measurements, good control is achieved. Furthermore, in terms of efficient use of space, by arranging the thermistors (112A) (112B) and heater (111) on both sides of the vibration transmission plate (127) and base (128), the heating means and temperature sensing means can be efficiently provided in a small space.

[0076] A heat sink (131) is provided on the back side of the piezoelectric vibrator (110B). The heat sink (131) is provided over a wide area so as to cover the opposing vibration transmission plate (127) with the aim of dissipating heat generated from the elements (133) on the substrate (132) where the control circuit is located, and also to supplementarily raise the temperature of the teeth (12). Specifically, when the comb teeth come into contact with wet hair to which treatment or the like has been applied, the temperature of the comb teeth decreases, but the heater (111), the heat generated by the piezoelectric vibrator (110), and the heat from the elements (133) on the substrate (132) are transmitted to the opposing comb teeth by radiant heat.

[0077] The upper end of the vibration transmission plate (127) is held between two fixing members (130) (130). As shown in Figure 7, they are supported by being held from above in a U-shaped cross-section. Since the fixing members (130) are fixed to the comb housing (11), the upper edge of the vibration transmission plate (127) can be considered as a fixed end that can support the vibration transmission plate (127) on one side.

[0078] Here, in Figures 6 and 7, when the arrangement direction of the comb is X, the vertical direction of the teeth is Z, and the vibration (amplitude) direction of the teeth is Y, let A be the sum of the Z-direction distance L1 from the piezoelectric vibrator (110) to the fixing member (130) and the Z-direction distance L2 from the piezoelectric vibrator (110) to the tips (corresponding to the base of the teeth) of the insulators (120a), (122a), (124a), and (126a). Furthermore, when the Z-direction distance from the tip of the insulator to the tip of the tooth is B1 on the right end and B2 on the left end, and the X-direction distance from the left end to the right end of the tooth is C, then C > B1 > A or C > B2 > A.

[0079] Regarding distances B1 and B2, it is desirable that the distances exceed 15 mm in order to securely grasp the hair and apply the desired effect in order to bring the hair into contact with the teeth. However, in order to vibrate at a high frequency as in the present invention, if the distances B1 and B2 exceed 60 mm, the influence of the natural frequency of the metal plate including the teeth, which in this embodiment is 387 Hz, becomes dominant, making it difficult to transmit the desired high-frequency vibration of 1 MHz.

[0080] Furthermore, regarding the heat from the heater (111), if the distances B1 and B2 are too small, too much heat is transferred to the scalp, increasing the risk of low-temperature burns. Conversely, if the distances B1 and B2 are too large, heat is dissipated, making it difficult to transfer heat to the hair.

[0081] Furthermore, while a longer distance C is desirable because it allows for processing more hair at once, in the case of the present invention, where the purpose is to heat the hair with a heater, the surface area of ​​the comb teeth increases, and the amount of heat dissipated increases, which presents a problem as it becomes difficult for the desired thermal energy to reach the hair. For this reason, it is desirable that the distance C is not too wide, while still processing a sufficient amount of hair, and that the heater (111) can heat almost the entire length of the distance C.

[0082] Furthermore, while a larger distance A is desirable because it allows for a larger piezoelectric vibrator (110) and thus increased vibration, for processing hair with a handheld device as in the present invention, a smaller distance A makes it easier to handle and allows for more efficient hair processing.

[0083] To ensure that vibration is effectively generated even at a small distance A, the piezoelectric vibrators (110) are arranged in a row in the direction of the comb's arrangement, i.e., the X direction, and the difference between distance B1 and distance B2 is minimized so that the degree of vibration of all teeth (12) remains unchanged.

[0084] Regarding the heater (111), to ensure sufficient heat is generated even in a small area with a small distance A, the heater (111) extends in the direction of the comb arrangement X. The difference between distances B1 and B2 is minimized to reduce the temperature difference.

[0085] In order to balance the above-mentioned issues, in this embodiment, A is set to 20.09 mm, B1 to 28 mm, B2 to 22 mm, and C to 53 mm as preferred values.

[0086] The piezoelectric vibrator (110A) generates vibrations at a first frequency between 500 kHz and 200 Hz, which is 1 MHz in this embodiment, and the piezoelectric vibrator (110B) generates vibrations at a second frequency between 10 kHz and 500 kHz, which is 116 kHz in this embodiment. Conventionally, as shown in Figure 5(a), oscillation with a fixed frequency was assumed, and intermittent oscillation was performed.

[0087] In contrast, the present invention, as shown in Figure 5(b), can perform hyper-oscillation consisting of a combination (or alternating) of two waveforms, for example, 1 MHz (FM oscillation) and 116 kHz (AM oscillation). By such hyper-oscillation, different vibration frequencies are transmitted to the teeth of the comb, and vibration energy can be effectively transmitted.

[0088] To explain further, if teeth are made of stainless steel, the wavelength of a 1 MHz ultrasonic wave propagating through stainless steel is, assuming a propagation speed in stainless steel = 5740 m / s, Therefore, one wavelength is 5.74 mm. In this embodiment, the distance L2 from the ultrasonic transducer to the tip (corresponding to the base of the tooth) of the insulator (120a) (122a) (124a) (126a) is 12.915 mm, or 2.25 λ. This is also nine times a quarter wavelength, or 1.435 mm. In this way, the fixed end of the rubber packing, which is the actual base, and the actual center of the ultrasonic transducer correspond to the nodes and antinodes of vibration, respectively, when considering a standing wave. For this reason, the ultrasonic element is prone to vibration.

[0089] Therefore, by setting the distance between the ultrasonic transducer and the base of the tooth to an odd multiple of one-quarter wavelength of the vibration period, the tooth resonates, and vibrations can be transmitted efficiently. Similarly, the distance L1 from the ultrasonic transducer to the shaft is 7.175 mm, which is 1.25λ, or five times one-quarter wavelength.

[0090] Furthermore, if teeth are made of stainless steel, the wavelength of 116kHz ultrasound propagating through stainless steel is Therefore, one wavelength λ is 49.48 mm.

[0091] Based on these values, the distances L3 and L4 from both ends of the tooth (12) in the longitudinal direction to the center of the ultrasonic transducer, as shown in Figure 6, are set to 37.11 mm, respectively. This corresponds to 0.75λ of the wavelength at a frequency of 116 kHz, which is three times a quarter wavelength. By designing it in this way, vibration is easily achieved in the L1 and L2 directions at 1 MHz, and in the L3 and L4 directions at 116 kHz, allowing for good vibration at multiple frequencies.

[0092] [Second Embodiment] The beauty device according to the second embodiment, as shown in Figures 9 and 10, is equipped with a comb section (101) having a plurality of comb teeth (102). At least some of the second comb teeth (105) of the comb teeth (102) are vibrated by a vibrating means (106) consisting of a piezoelectric vibrator. Furthermore, a heating means such as an electric heater is provided at the base of the comb teeth (102). In this respect, it is the same as in the embodiment described above. In addition to the heat generated by the heater, self-heating generated when the vibrating means (106) is in operation may also be used to heat the comb teeth (102).

[0093] The comb teeth (102) have the function of releasing heat to the outside of the machine from the comb teeth, and also act as a means of heat dissipation. This allows for appropriate control of the temperature rise of the comb section (101).

[0094] In this embodiment, when the total mass of the second comb teeth (105) and the vibrating means (106), which constitute at least a part of the comb teeth (102), is m (kg), the frequency is f (Hz), and the energy applied to the vibrating means (106) is P (W), then P / (mf 2 ) ≥ 6.3 × 10 -10 It is structured in such a way.

[0095] In this regard, if A is the amplitude (m) and Q is the quality factor, then P = (1 / 2)m(2πf) 2 A 2The relational expression of Q is known. From this equation, it can be understood that the larger the mass m, the higher the frequency f, and the larger the amplitude A, the greater the energy P required.

[0096] When the target amplitude A for obtaining the beauty effect is set to 1 μm and the joint structure and material of the comb teeth (102) and the vibrating means (106) are appropriately selected to make the quality factor Q = 32, the above equation is arranged to get P / (mf 2 ) = 2π 2 A 2 Q = 6.3×10 -10 is obtained. By applying P greater than this value, vibrations exceeding the target amplitude can be efficiently obtained.

[0097] Specifically, the total mass m (kg) of the second comb teeth (105) and the vibrating means (106) is 0.021 kg, the vibration frequency f (Hz) is 100,000 Hz, and the energy P (W) applied to the vibrating means (106) is 5.5 W. Calculating these gives P / (mf 2 ) = 2.6×10 -6 , which is greater than 6.3×10 -10 . By back-calculating for the amplitude A, A = √(P / (2×m×π 2 ×f 2 ×Q)) = 6.4×10 2 8>, and it is expected to vibrate with an amplitude of 6.4 μm.

[0098] In this embodiment, the energy applied to the heater (111) is 20 W. This is 4.64 times the energy of 5.5 W applied to the vibrating means (106). If the energy applied to the heater (111) is increased further, the temperature of the adjacent vibrating means (106) exceeds 80°C and the vibration efficiency of the vibrating means (106) decreases. If the energy applied to the heater (111) is reduced below this value, the beauty effect decreases. Therefore, the ratio of the total energy P' applied to the vibrating means (106) and the heater (111) to the energy P applied to the vibrating means (106) is preferably 4.64 times. Using this result, the energy P applied to the vibrating means on the left side of the above equation is replaced with the total energy P' applied to the vibrating means and the heating means, and the right side is corrected to 4.64 times, then P' / (mf 2 ) ≥ 2.9×10-9 It is clear that this is desirable.

[0099] In a desirable configuration, the frequency f should be between 1 Hz and 1000 kHz, and the total mass m of the piezoelectric vibrator, including the second comb teeth (105) and the vibrating means (106), should be between 1 g and 1 kg. In this configuration, the required energy P is at most 631 W, which can be easily supplied from a commercial power source, thus simplifying the design.

[0100] The comb portion (101) of this embodiment is provided with a first comb tooth (104) and a second comb tooth (105). The first comb tooth (104) is fixed to the comb portion housing (103), and the second comb tooth (105) is vibrated by a vibrating means (106).

[0101] The scalp-side end of the first comb teeth (104) is closer to the scalp than the scalp-side end of the second comb teeth (105), allowing it to pre-arrange the hair when combing and effectively transmit the subsequent vibration action of the second comb teeth (105).

[0102] Because the first comb teeth (104) come into contact with the scalp first, the second comb teeth (105) can vibrate without directly contacting the scalp, improving the vibration efficiency of the second comb teeth and suppressing the resonance of unpleasant frequencies such as ultrasonic vibrations in the head.

[0103] It is desirable that the thickness of the second comb teeth (105) be less than half the thickness of the first comb teeth (104). For example, if the thickness of the second comb teeth (105) is 1 mm and the thickness of the first comb teeth (104) is 2 mm, the total mass m of the second comb teeth (105) and the vibrating means (106) can be reduced, making it easier to vibrate. In addition, by increasing the thickness of the first comb teeth (104), it is less likely to cause pain even when pressed firmly against the scalp, thus improving safety.

[0104] The second comb teeth (105) extend from the outer surface of the comb housing (103), and a waterproof member (107) is provided at its base to seal the space between it and the comb housing (103). The waterproof member (107) is an insulating member that prevents water from entering the inside of the comb housing (103) and ensures electrical safety.

[0105] The second comb teeth (105) are supported by the retaining member (108) in a vibrating manner, and when viewed from the scalp side, they are arranged in the order of the second comb teeth (105), the waterproofing member (107), and the retaining member (108).

[0106] The ratio of the distance from the waterproof member (107) to the holding member (108) to the distance from the waterproof member (107) to the scalp-side end of the second comb tooth (105) is preferably between 0.5 and 2. If this ratio is too large, the total mass m of the second comb tooth (105) and the vibrating means (106) increases, making it difficult to obtain vibration and thus difficult to design. On the other hand, if this ratio is too small, the heat applied to the second comb tooth (105) by the energy consumed by the vibrating means (106) becomes difficult to dissipate, making it difficult to design using a piezoelectric vibrator whose performance deteriorates at high temperatures.

[0107] Specifically, the distance A from the waterproof member (107) to the holding member (108) is set to 20 mm, the distance from the waterproof member (107) to the center of the vibrating means (106) is set to 10 mm, similarly the distance B from the scalp-side end of the second comb teeth (105) is set to 19 mm at the shortest point and 26 mm at the longest point, and similarly the distance from the scalp-side end of the first comb teeth (104) is set to 20 mm at the shortest point and 27 mm at the longest point.

[0108] Therefore, the ratio of the distance A from the waterproofing member (107) to the retaining member (108) to the distance B from the waterproofing member (107) to the scalp-side end of the second comb tooth (105) is set to 0.95 to 1.3. Furthermore, the distance W from one end of the first comb tooth (104) in the x-axis direction to the other end is set to 64 mm. Also, the distance C from one end of the second comb tooth (105) in the x-axis direction to the other end is also set to fall within the range of 64 mm. In other words, distance W or distance C is about three times longer than either the distance A from the waterproofing member (107) to the retaining member (108) or the distance B from the waterproofing member (107) to the scalp-side end of the second comb tooth (105).

[0109] The distance W is chosen as the dimension that makes it easy to process hair when it is taken in a flat, sheet-like shape. In other words, if the distance W exceeds 70 mm, the amount of hair bundle processed at once increases, making it difficult to process uniformly and resulting in a less consistent beauty effect. On the other hand, if the distance W is less than 50 mm, a more consistent beauty effect is easier to obtain, but the user will have to use the device repeatedly when trying to process their entire head of hair, which is inefficient.

[0110] If we express this as the ratio of the distance A from the waterproofing member (107) to the retaining member (108) to the distance W from one end of the first comb tooth (104) in the x-axis direction to the other end, or the distance C from one end of the second comb tooth (104) in the x-axis direction to the other end, then it is necessary that 1 ≤ W / A ≤ 10 or 1 ≤ C / A ≤ 10, and more preferably, the range 2.5 ≤ W / A ≤ 3.5 or 2.5 ≤ C / A ≤ 3.5 is optimal.

[0111] In this example, the length of the second comb teeth (105) is, on average, 1 mm shorter than that of the first comb teeth (104). This way, the scalp-side end of the first comb teeth touches the scalp first, making it less likely for the high-frequency vibrating second comb teeth (105) to touch the scalp, thus allowing for use while avoiding unpleasant vibrations, which is advantageous. If the difference is reduced from 1 mm to 0.5 mm, the second comb teeth (105) will touch the scalp more easily. If the difference is increased from 1 mm to 5 mm or more, the effect of the second comb teeth (105) near the scalp will be reduced, making it difficult to obtain sufficient beauty benefits.

[0112] The waterproofing member (107) is made of an insulating material or has a shape that is more rigid and less prone to deformation than the retaining member (108). Specifically, the waterproofing member (107) exposed to the outside of the comb housing (103) is made of fluororubber with a rubber hardness of 70, which is resistant to deterioration by chemicals and resistant to swelling from water absorption, while the retaining member (108) is made of silicone rubber with a rubber hardness of 40, which is resistant to deterioration even with repeated deformation.

[0113] The retaining member (108) further consists of a cylindrical portion that engages with the comb housing (103) and a roughly U-shaped portion that engages with the second comb teeth (105). The comb tooth housing (103) and the second comb teeth (105) are spaced apart with the retaining member (108) in between, so that even if the position of the second comb teeth (105) is significantly displaced relative to the comb tooth housing (103), the retaining member (108) deforms to easily absorb the movement.

[0114] Since the retaining member (108) is constructed in a cylindrical or roughly U-shape, the mold configuration can be easily constructed when molding the retaining member (108), making it easier to maintain stable dimensional quality. Furthermore, the retaining member (108) can be easily attached to the comb-shaped housing (103) or the second comb teeth (105). As a result, the assembly of the comb section (101), which has a complex internal structure, becomes easier, allowing the comb section (101) to be designed to be small and light, ensuring the desired beauty effect while making the device easy for the user to use.

[0115] Examples of materials include polycarbonate, polyphenylene sulfide (PPS), polyetheretherketone (PEEK), and rigid silicone rubber. Examples of shapes include reinforced shapes with ribs or protrusions, structures with partially increased wall thickness, and insert reinforcement structures using insulating resin.

[0116] Because the holding member (108) deforms before the waterproofing member (107) deforms, a gap is less likely to form between the waterproofing member and the second comb teeth (105), and the waterproofing performance is maintained for a long period of time. In addition, since the waterproofing member (107) can be configured as a fulcrum and the vibration means (106) as the point of application, large vibrations can be efficiently transmitted to the second comb teeth (105).

[0117] Specifically, when the vibrating means (106) is displaced by 1 μm, the holding member (108), the adhesive portion of the second comb teeth (105) to the vibrating means (106), the waterproofing member (107), and the scalp-side end of the second comb teeth (105), i.e., the parts that come into contact with the user's hair, can be displaced by 2 μm, 1 μm, 0 μm, and -2 μm, respectively. This ensures waterproof performance while maximizing the beauty effect.

[0118] Furthermore, when a user cleans the product after use, they will first try to remove dirt from the part of the second comb tooth (105) that has come into contact with the hair. At this time, the second comb tooth (105) is susceptible to external force. Specifically, if the tip of the second comb tooth (105) is displaced by 2 mm, the part of the second comb tooth (105) that contacts the retaining member (108) will be displaced by -2 mm, but the displacement of the part of the second comb tooth (105) that contacts the waterproofing member (107) can be kept at 0 mm. Therefore, the compression allowance of the sealing portion does not change, and even if an unexpected external force is applied to the second comb tooth (105), it is advantageous that the waterproof performance of the product can be easily ensured. In this embodiment, the interference allowance between the second comb tooth (105) and the waterproofing member (107), that is, the compression allowance of the waterproofing member (107), is designed to be between 10% and 50%.

[0119] According to this embodiment, by providing the vibrating means (106) and the heating means such as the heater (111) independently, the heating and vibration of the comb teeth (102) can be performed efficiently and stably. Furthermore, in this embodiment, by appropriately arranging the portion of the second comb teeth (105) that is exposed outside the comb housing (103) as a heat dissipation means (109), the vibrating means (106) attached to the second comb teeth (105) can be adjusted to an appropriate temperature of 80°C or less so as not to reduce vibration efficiency, and the temperature rise of the comb (101) can be controlled, thereby enabling a treatment effect by high-power vibration while preventing damage to the scalp and hair.

[0120] The combination structure of the first comb teeth (104) and the second comb teeth (105), along with the configuration of the waterproof member (107) and the retaining member (108), ensures long-term durability and safety. Furthermore, since the heat dissipation means (109) of the second comb teeth (105), the waterproof member (107), the heater (111), the vibration means (106), and the retaining member (108) are arranged in order from closest to the hair, even if the heat output of the heater (111) is increased to enhance the beauty effect, heat is efficiently transferred to the user's hair from the nearby heat dissipation means (109), and the temperature of the vibration means (106) does not rise easily. As a result, the vibration efficiency does not decrease easily, and the combined effects of heat and vibration make it easier to achieve further beauty effects.

[0121] 1 Hairdresser 10 Comb section 11 Comb section housing 12 Teeth 20 Gripping section 21 Anti-slip section 22 Mode switching switch 23 Power switch 101 Comb section 102 Comb teeth 103 Comb section housing 104 First comb teeth 105 Second comb teeth 106 Piezoelectric vibrator 107 Waterproof member 108 Holding member 109 Heat dissipation means 110 Piezoelectric vibrator 111 Heater 112 Thermistor 120, 122, 124, 126 First electrode 121, 123, 125 Second electrode 128 Base 129 Support 130 Fixing member 131 Heat sink 132 Substrate 133 Element

Claims

1. A beauty device having a comb portion, wherein the teeth of the comb portion are made of a heat-conductive material, and the device is equipped with a heating means for heating the base of the teeth, and a vibrating means for vibrating the teeth via the base.

2. The hairdresser according to claim 1, wherein the teeth of the comb are in a single row and are shaped to be in direct contact with the user's hair.

3. The beauty device according to claim 1, comprising a temperature sensing means on the tooth or near the boundary between the base and the tooth, wherein the heating means is controlled according to the detection result by the temperature sensing means.

4. The beauty device according to claim 1, wherein the distance between the vibrating means and the base is an odd multiple of one-quarter wavelength of the vibration period.

5. The beauty device according to claim 4, wherein when the vibrating means vibrates at two or more frequencies, the distance from the base is an odd multiple of one-quarter wavelength of each vibration period.

6. The beauty device according to claim 1 or 2, wherein the beauty device is equipped with an electric current generating means, and at least a portion of the teeth that conduct electricity with the electric current generating means is conductive, and an electrical effect is applied from the teeth to the user's scalp.

7. The beauty device according to claim 6, wherein the entire tooth is conductive.

8. The beauty device according to claim 6, wherein a portion of the teeth constitutes a first electrode, and another portion of the teeth constitutes a second electrode, and an electrical effect is applied by passing current between the first electrode and the second electrode.

9. A beauty device having comb teeth, comprising a vibrating means for vibrating the comb teeth and a heat dissipation means for releasing heat from the comb teeth toward the outside of the device, where the total mass of the comb teeth and the vibrating means is m (kg), the frequency of vibration is f (Hz), and the energy applied to the vibrating means is P (W), then P / (mf 2 ) ≥ 6.3 × 10 -10 A beauty device characterized by being configured in such a way.

10. A beauty device comprising a first comb tooth and a second comb tooth vibrating by the vibrating means, wherein the first comb tooth is fixed to the comb housing, and the scalp-side end of the first comb tooth is closer to the scalp than the scalp-side end of the second comb tooth.

11. The beauty device according to claim 10, wherein the second comb teeth are formed extending from the outer surface of the comb housing and include teeth that directly contact the user's hair, a waterproof member that seals the space between the comb housing and the second comb teeth, and a holding member that supports the second comb teeth in a vibrating state, and the teeth, waterproof member, and holding member are arranged in that order when viewed from the scalp side.

12. The beauty device according to claim 11, characterized in that the waterproof member is made of a material or has a shape that is more rigid and less prone to deformation than the retaining member.

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