KR100787874B1 - Skin care unit - Google Patents

Abstract

A multi-functional skin care device is provided to emit LED type ultraviolet rays by wavelengths and to generate far-infrared rays and ultrasonic waves through one unit and therefore to help a user to get benefits from diverse skin care functions. A multi-functional skin care device includes: at least one infrared ray LED(210) to radiate infrared rays by wavelengths; at least one UV LED(212) to radiate 200-400nm wavelength ultraviolet rays; a vibrator(230) to generate vibration effects; a second sensor(310) disposed between the infrared ray LEDs and the UV LEDs to switch operations of the infrared ray LEDs, the UV LEDs, and the vibrator according to a given control sequence; and a first sensor(300) disposed between the infrared ray LEDs and the UV LEDs to detect a current state of the skin and to send out the detection value to a controller to execute a suitable skin care program.

Description

Skin Care Machine {SKIN CARE UNIT}

1 is an exemplary perspective view of a skin care device according to the present invention;

(A) is sectional drawing cut along the line A-A of FIG. 1, (b) is a modification, (c) is a front view of a main part,

3 is a block diagram for controlling the skin care device according to the present invention;

Figure 4 is an exemplary cross-sectional view showing another embodiment of a skin care device according to the present invention.

♧ description of the symbols for the main parts of the drawing ♧

100 .... Housing 120 .... Display

130 .... Keypad 140 .... Insertion groove

150 .... Retaining groove 200 .... Contact

210 .... Infrared LEDs 212 .... Ultraviolet LEDs

220 ... cover 230 ... vibrator

300 .... first sensor 310 .... second sensor

The present invention relates to a skin care device, and more specifically, to implement a small LED type of infrared rays, UV lamps and ultrasound, but the various functions such as sterilization, treatment, heat, exfoliation, beauty, etc. according to the user's choice It provides a skin care device that is easy to carry and use as well as to be used according to the purpose through a single unit.

In general, skin care is usually visited by beauty salons such as beauty salons and cosmetics shops, and make-up or massage is provided directly by a professional.

However, even those who are interested in skin or beauty, it is very difficult for a person who can not afford time or financially to visit the beauty salon or skin care room and take care of the skin.

In addition, as the interest in one's appearance is increasing regardless of age and gender, various books related to skin and beauty or professional websites related to beauty are exploding.

As part of such a solution, a portable skin care device or a skin care device or a skin treatment device is developed and commercially available.

These devices are preferred because they are inexpensive, easy to carry, and can easily manage their skin even if they do not have expertise. For example, low frequency or ultrasonic heating, cleaning, skin massage or exfoliation (pilling), and acne using laser. Skin care such as treatment and skin sterilization using a specific wavelength of ultraviolet rays.

It can also increase blood flow, promote healing of various wounds or damaged skin, treat frostbite or hyperthermia, treat blood circulation disorders, physiotherapy, collagen stimulation, cellulite treatment, adrenaline stimulation, psoriasis treatment It is also used for body shape improvement and non-invasive wrinkle removal.

By the way, most of these devices have only one function, so in order to use various functions, each device must have its own device, which is very high in space and cost, and inconvenient to carry.

In addition, the user has a narrow selection of devices for skin care, and the functions implemented in conventional devices are simple, complex, and systematic, and there is no function to set the device function according to the user's own skin environment. Discomfort followed.

The present invention was created in view of the limitations of the prior art as described above, and has been developed to solve this problem. It is easy and easy to care for the skin, and also implements a combination of far-infrared function and skin activation promotion function by ultrasonic vibration to perform various skin care functions through a single device, Its main purpose is to provide an improved skin care device that can prevent skin problems, skin aging, etc. by checking frequently and carrying out skin care that goes with it.

In order to achieve the above object, the present invention provides a printed circuit board including a control unit, a housing including a keypad and a display window; In the skin care device having a contact portion provided on the upper front of the housing; An insertion groove formed on the front edge of the contact portion; At least one infrared LED inserted into the insertion groove, electrically connected to the control unit, and selectively radiating near-infrared, infrared and nuclear-infrared rays; At least one ultraviolet LED inserted and fixed to the insertion groove at a predetermined distance from the infrared LED, electrically connected to the control unit, and selectively emitting ultraviolet rays in a wavelength band of 200 to 400 nm; A vibrator installed at the center of the front surface of the contact portion to impart vibration upon skin contact; A second sensing sensor installed in a space between the infrared LED and the ultraviolet LED, the second sensor being connected to the control unit and switching to drive the infrared LED, the ultraviolet LED, and the vibrator in a control order only when the skin is in contact; A first device installed in a space between the infrared LED and the ultraviolet LED and connected to the controller to detect a state of the skin upon skin contact and to transmit a detection value to the controller so that a skin care program suitable for the user's skin is performed; It provides a skin care device including a detection sensor.

In this case, a cover made of any one material selected from quartz, EPDM, and polymer series may be further installed in the insertion groove in which the infrared LED and the ultraviolet LED are fixed.

In addition, the vibrator is preferably an ultrasonic head or piezoelectric ceramic that emits a frequency of 20KHz ~ 10Mhz.

In addition, a bulb may be inserted into the lower part of the vibrator, which increases the thermal effect on the ultrasonic head, which is better for the skin soothing effect as well as the function of the infrared lamp.

In addition, it is preferable that the second detection sensor is a proximity sensor or a pressure sensor, and the first detection sensor is an oil or moisture measurement sensor.

Furthermore, a voice output unit may be further installed inside the housing to be connected to the control unit and to interlock with the display window to output the contents displayed on the display window as voice.

In addition, the present invention provides a pen-shaped body with a printed circuit board having a control unit; An ultraviolet lamp in the form of an LED fixed to the front end of the body and electrically connected to the control unit and emitting ultraviolet rays in a wavelength band of 200 to 400 nm; A proximity sensor installed at a part of the outer edge of the body around the ultraviolet lamp and electrically connected to the controller; It can also be achieved by providing a skin care device built in the rear end of the body and sealed by a cover and including a battery for supplying power to the printed circuit board, ultraviolet lamp and proximity sensor.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

1 is an exemplary perspective view of a skin care device according to the present invention, Figure 2 (a) is a cross-sectional view taken along the line AA of Figure 1, (b) is a modification and (c) is a front view of the main part, Figure 3 Figure 4 is a block diagram for the control of the skin care device according to the present invention, Figure 4 is an exemplary cross-sectional view showing another embodiment of the skin care device according to the present invention.

As shown in FIG. 1, the skin care device of the present invention has a housing 100 having an approximately dumbbell shape that is easy to grip, and is provided on an upper end of the housing 100 and is in direct contact with the skin or has a wavelength of a predetermined band on the skin. It consists of a contact portion 200 is built in the infrared or ultraviolet lamp for irradiating.

In this case, a printed circuit board (PCB) (not shown) is embedded in the housing 100, and a keypad 130 including a plurality of buttons that can be operated by a user is provided on the front of the housing 100, and an operation content. A display window 120 in the form of an LCD may be provided.

In addition, the display window 120 and the keypad 130 may be electrically connected to the printed circuit board, and a battery housing 170 for mounting a battery may be provided on the rear surface of the housing 100.

Here, the skin care device of the present invention may use a battery or a storage battery as a power source, and may also be used by connecting to an AC power source (eg 220V) through a wire. It will be omitted.

In addition, the power switch 110 may be installed on a part of the side of the housing 100, but the present invention is not limited thereto. When one button, for example, the 'OK' button is provided on the keypad 130, the power is pressed. This may also be configured to be applied, since the matters also known in most electronic and telecommunications equipment, such a detailed description will be omitted.

In addition, as shown in (a), (b), (c) of Figure 2, the upper surface of the upper end of the housing 100 is formed with a circular fixing groove 150 in the center, inserted along the edge thereof Groove 140 is formed.

On the other hand, the contact unit 200 is composed of a head 232 connected to the infrared LED 210, the ultraviolet LED 212, the cover 220 and the vibrator 230.

In this case, the infrared LED 210 and the ultraviolet LED 212 is fixed to the insertion groove 140, these are a pair of symmetrical pairs in the radial direction with respect to the center of the center of the contact portion 200 Can be arranged.

Particularly preferably, as shown in (c) of FIG. 2, the infrared LED 210 and the ultraviolet LED 212 may be arranged to cross each other while maintaining approximately 90 °, and the infrared LED 210 may also be arranged. And UV LED 212 is preferably a plurality of cross-arranged to give a specific single wavelength.

The lead wires drawn from the LEDs 210 and 212 are electrically connected to the above-described printed circuit board.

Herein, the infrared rays emitted by the infrared LED 210 are well known, and as infrared rays, near infrared rays (0.75 to 3 µm), infrared rays (3 to 25 µm), as electromagnetic waves having wavelengths in the range of 0.75 µm to 1 mm, Since they have different characteristics for each wavelength band such as far infrared rays (25 μm or more), it is desirable to allow all of them to be implemented so as to widen user selection.

In this case, near-infrared radiation includes not only thermal action but also photographic action, photoelectric action, and fluorescence action, including electron spectrum. And the like, and are used for disinfection or sterilization, and for treating joints and muscles for treatment. In the present invention, it is preferable to use for sterilization when expanding the pores.

In addition, far-infrared rays expand capillaries to help blood circulation and cell tissue generation, and when they touch the moisture and protein molecules that make up cells, they shake cells 2,000 times a minute to prevent aging. It is effective in preventing various adult diseases such as metabolism promotion, chronic fatigue, and in addition to promoting sweating, pain relief, heavy metal removal, sleep, deodorization, antibacterial, mold propagation prevention, dehumidification, air purification in the present invention It is preferable to use for softening and vitalizing the tail when expanding pores.

In addition, these infrared rays may be used in combination according to the characteristics of the skin (dry, oily, neutral, complex) to be described later.

For example, as will be described later, dry skin may be irradiated with NIR for some time and then irradiated with UV for some time, and then may be in the form of managing the nasal cavity by ultrasonic vibration.

Furthermore, ultraviolet rays emitted by the ultraviolet LED 212 are ozone generating lines having a 184.9 nm wavelength for sterilization and deodorization, sterilizing lines having a 253.7 nm wavelength suitable for various sterilization, health lines having a wavelength of 297 nm, and photochemical action. The 365nm wavelength is divided into actinic rays, etc. In the present invention, UV LED having a wavelength range of 200 ~ 400nm can be selected and used according to the purpose of use, respectively.

In particular, the ultraviolet light is effective for the sterilization of almost all bacteria and is safe because it hardly changes the irradiated object, and it is suitable for sterilization because it does not tolerate the bacteria to be irradiated. It is converted to D to maintain the normal concentration of calcium and phosphorus in the blood, and has the effect of strengthening the skeleton.

In this case, as in the above-described infrared rays, the combination operation may be programmed in a manner suitable for skin treatment or skin care according to the skin condition of the user, and thus the use time and operation process may be controlled by a control element such as a printed circuit board. It can be implemented and used.

In addition, in the case of the ultraviolet rays to perform the function of sterilization or sterilization in the skin of potential pathogens such as Table 1 floating in the air.

In addition, the first detection sensor 300 and the second detection sensor 310 is installed between the LED 210, 212, the installation structure is preferably having a similar shape to the LED (210, 212).

The second detection sensor 310 is a proximity sensor or a pressure sensor to enable the vibrator 230 including the LEDs 210 and 212 to operate according to a program only after the contact part 200 touches the skin after power is applied. This is to protect the surrounding people from ultraviolet rays, which can be dangerous.

In addition, the first detection sensor 300 is mainly an oil and moisture measurement sensor, so that skin care corresponding to the skin condition of the user can be performed. For example, dry skin, oily skin, neutral skin, complex skin, etc. The skin care is then performed according to the programmed procedure for each skin condition.

In addition, the first sensor 300 is composed of sensor tips (302, 304) consisting of two electrodes to measure the voltage, current according to the skin resistance while flowing a fine voltage or current, the skin condition by the difference It is configured to determine, it is preferable to maintain the distance between the sensor tips (302, 304) less than 1cm. This is because, if it exceeds 1cm, accurate skin measurement is difficult, and the measurement range is narrowed as much as possible to objectively check the skin condition for each skin area.

In addition, the sensor tips 302 and 304 are exposed to be in direct contact with the skin through the cover 220, the lower end of the sensor tips (302, 304) to be supported by an elastic member such as a spring to smooth skin contact. It is preferably configured to.

In this case, when the first detection sensor 300 is a moisture measurement sensor, the measurement result indicates an absolute value from 0 to 33 (0 to 100) according to the amount of moisture detected when the user touches the skin, and indicates the measured voltage or current. The value measured by storing it in the program with the range suitable for the state can be compared and expressed as a number from 0 to 100). In addition, since the control relations related to these determinations are performed by the control unit, the control unit includes a well-known program capable of reading the state of the skin with the detected values, and thus detailed description thereof will be omitted.

However, the principle of measurement is briefly explained by using the biocurrent ratio (the current ratio is one resistance including the influence of non-conductor) and the part without fat (body's water and electrolyte) and fat part (fat Is not absorbing moisture), for example, when the skin resistance value has a value of 10㏀, 50㏀, 100㏀, 200㏀, 300㏀, etc. according to moisture and oil content, the first detection A microcurrent or a microvoltage is applied to the sensor 300 to generate a difference from the calculated value measured by the ohm formula of V = I × R, and thus the skin state can be measured.

This principle is called BIA (Bioelectric Impedence Analysis).

When the skin measurement is finished through the same principle, the sensor tips 302 and 304 may be wiped with a dry cloth, and then measured at other sites to measure more accurate skin conditions.

In addition, the first and second detection sensors 300 and 310 including the LEDs 210 and 212 may be protected by the cover 220 as illustrated in FIG. 2A, and the cover 220 as illustrated in FIG. 2B. It may be installed immediately without.

At this time, the cover 220 is preferably a kind of protection member to prevent damage to the devices, quartz, EPDM, polymer-based material, which uses a peeling agent to increase the effect as needed when using the ultrasonic function In this case, the LED part may be contaminated in order to prevent this in advance, and in particular, the reason for limiting the material as described above is that these materials have high LED wavelength transmittance.

Meanwhile, a vibrator 230 connected to the head 232 in contact with the skin is installed inside the first and second detection sensors 300 and 310 including the LEDs 210 and 212, that is, the center of the contact part 200.

The vibrator 230 may be an ultrasonic vibrator for oscillating ultrasonic waves, and more preferably, may be a piezoelectric ceramic.

Ultrasonic vibrator is a type of vibrating element that generates ultrasonic vibrations by resonating electric pulses. The frequency suitable for skin care can be 20KHz ~ 10Mhz.

In addition, piezoceramic is a vibration device that generates a small vibration of millions of times per unit time (1 second) when a voltage of 40 ~ 50V is applied, the frequency suitable for skin care can be 20KHz ~ 10Mhz.

As described above, the vibrator 230 is electrically connected to a printed circuit board embedded in the housing 100 and is controlled.

Here, the ultrasonic wave moisturizes skin and relieves wrinkles by vibrating action to heat the subcutaneous fat by vibrating deep into the skin and oxidizing / reducing action to give a whitening effect, to warming action by vibrating friction heat, foaming action, and whitening effect. It is known to give acne, blemishes and blemishes.

In addition, a light bulb 240 may be provided inside the housing 100 at a distance from the vibrator 230, and the light bulb 240 may increase the thermal effect on the head 232 to double the function of the infrared lamp. This is to maximize the skin soothing effect.

1 and 3, the printed circuit board includes a controller connected to the keypad 130, the first and second detection sensors 300 and 310, and the display window 120, and the infrared LED 210 according to the control signal of the controller. And a light emission control unit for controlling light emission of the ultraviolet LED 212 and a vibration control unit for controlling the frequency of the vibrator 230.

In this case, a voice output unit may be additionally connected to the display window 120, and the voice output unit may convert and output important contents displayed on the display window 120 into voice.

In addition, the controller is a microprocessor as is well known, for example, a chip type such as MSM embedded in a mobile communication terminal (mobile phone) is preferable.

Operational relationship of the present invention made up of such a configuration will be described through the exemplary implementation of the skin care device.

Prior to the description, when the skin care device of the present invention is turned on and then the skin 200 is in contact with the skin to be managed, the contact part 200 is in contact with the skin by a detection signal of the second detection sensor 310. The controller knows that the signal is transmitted to the first detection sensor 300 and operates the signal, and performs the programmed operation according to the skin condition set based on the detection value of the first detection sensor 300.

In this case, the programmed operation may be performed immediately according to the detection result, or when the user's confirmation is performed after notifying the user through the display window 120 and the voice output, the programmed operation may be performed at that time.

Next, a programmed operation performed by the controller based on the detected value will be described below.

 [For dry skin]

In the case of dry skin, even with the naked eye, the pores are not large, the area around the cheeks, eyes, and mouth is always dry, there are many fine lines, and the face is pulled out after washing the face. If the skin condition is known, the detection process by the first detection sensor 300 may be omitted.

To this end, the skin care device of the present invention directly assigns a menu key such as "dry, oily, neutral, complex" on the keypad 130 so as to perform a programmed operation immediately when the skin care device is known. Pressing the corresponding button may allow the program programmed accordingly to be carried out automatically.

First, when the user's skin detected by the first detection sensor 300 is dry skin, first, the infrared LED 210 is emitted to emit far infrared rays, but approximately 5 to 10 minutes in a temperature range of 35 to 50 ° C. By inspecting the degree, the pores are sufficiently enlarged and at the same time, the skin around the pores is elasticized and sterilized to prevent the bacteria from penetrating into the enlarged pores.

Here, it is more preferable to automatically cut off the power when the temperature range is exceeded by using a means such as a bimetal thermometer because wrong temperature control is caused.

Subsequently, the ultrasonic wave is used to remove wastes and debris in the pores and use a massage function that combines vibration.

At this time, it is better to use the convergent makeup, moisturizer, cleansing cream, and the like previously used.

In addition, in the case of ultrasonic vibration, since the evaporation of moisture and oil may be severe when the operating voltage is high, the operation is performed in a short time at a low voltage, preferably within 15 minutes.

In this way, when the pore enlargement and massage is completed, the ultraviolet LED 212 is turned on to sterilize the pathogens of Table 1 including bacteria remaining in the skin and pores, acne fungi, and sterilize for about 10 to 30 minutes.

In this case, the lighting time corresponds to a case in which the wavelength of the ultraviolet rays is in the 254 nm band, and in the case of other wavelength bands, the irradiation time may vary according to characteristics of the wavelength band.

In addition, in the case of ultraviolet rays including the infrared rays, the LED is turned on and radiated only when the skin is detected by the second detection sensor 310, that is, only when the skin manager is in contact with the skin to protect the eyesight of the user. It is preferable to.

The above-described skin care process is merely an example, and according to the user's selection, the infrared rays, ultraviolet rays, and frequencies to be irradiated can be reset through the keypad 130 and the display window 120. It should be natural to be built.

[Oily skin]

Oily skin is dark skin tone and thick skin, overall pores are large, and skin troubles such as acne or rash often occur, and the entire face is in a state of greasy skin.

In this case, the first detection sensor 300 can be confirmed according to the detection value, and through the same procedure as in the case of dry skin, pores enlargement, waste and Skin care such as debris removal and sterilization can be performed.

At this time, especially in the case of oily skin, use near-infrared rays of infrared rays for a short time (within 5 minutes), and if the time is longer, oily skin's pores can be enlarged to have an adverse effect. It is used together with a peeling agent that can produce a long time, for example, 15 to 30 minutes to remove oil remaining on the skin and waste, bacteria, acne fungi, etc. Since the pores are larger and the oil content is higher, it is preferable to sufficiently sterilize the ultraviolet LED having a sterilizing effect for about 5 to 15 minutes.

In this case, it is necessary to be cautious when exceeding 30 minutes or more, since ultraviolet rays may cause skin damage due to ultraviolet rays. In consideration of fungi, fungal bacteria and the like, it is particularly preferable to maintain such a treatment time.

[Neutral skin]

Since neutral skin is difficult to read because it is close to normal skin, it is preferable to use the first detection sensor 300.

That is, when it is identified as neutral skin according to the detection value of the first detection sensor 300, through the same procedure as in the case of the dry skin described above, pores enlargement, waste products in the order of infrared, ultrasonic, ultraviolet rays suitable for the management of oily skin And skin care, such as debris removal, sterilization can be performed.

As mentioned above, since the normal skin is close to normal skin, the skin's thermal effect (35 ~ 50 ℃), which is a general skin care program, is about 5 minutes, and the cleansing and massage function using ultrasonic waves after 15 minutes is performed. Sterilization function by 5 ~ 10 minutes to give a normal skin care.

[Combination Skin]

Complex skin is usually in the T zone (forehead, nose, etc.) area is oily, both cheeks dry or close to normal, in this case, you can proceed to the skin skin program for each type.

That is, skin care may be performed according to the detection value of the first detection sensor 300 in accordance with the three types of skin care methods described above.

By doing so, it is easy to carry out suitable skin care for the user.

On the other hand, as shown in Figure 4, the skin care device of the present invention as a pen type, here some functions, in particular, specializing in the sterilization function using ultraviolet light, treatment of inflammation, atopic dermatitis, nasal mucosa, athlete's foot, surgical lines, etc. It can also be used to sterilize shoes.

For example, it is known that E. coli has a bactericidal power of 99% for 3 seconds in the wavelength range of 250 to 270 nm, 3 seconds for Staphylococcus aureus, 10 seconds for athlete's foot fungi, and 10 minutes for house dust mites. It is known to eradicate cotton.

Therefore, the modified skin care device as shown in FIG. 4 may be used as a skin treatment device. According to FIG. 4, a pen-shaped body 400 is provided, and a battery 420 is built in an upper end of the body 400. The battery 420 is protected by the battery cover 430, the opposite end of the LED-type UV lamp 410 is installed, the center of the printed circuit board (PCB) is installed, the body 400 One side of the power switch 450 is installed, and the proximity sensor 440 is installed on one side of the body 400 in close proximity to the ultraviolet lamp 410.

Thus, when the power is turned on through the power switch 450 and then inserted into the treatment part, for example, the proximity sensor 440 detects this and emits the ultraviolet lamp 410 through the control unit on the printed circuit board (PCB). For example, the germs around the wound are sterilized by irradiating the wound with ultraviolet rays in the wavelength band of 250 to 310 nm.

In particular, the example of FIG. 4 has the advantage of easy portability and easy operation.

As described in detail above, the present invention provides various management effects according to the skin condition of the user, thereby broadening the user's choice, and providing not only beauty care but also a therapeutic effect such as sterilization using ultraviolet rays. It is easy to carry and easy to use.

Claims (7)

A housing having a printed circuit board including a control unit and having a keypad and a display window; In the skin care device having a contact portion provided on the upper front of the housing; An insertion groove formed on the front edge of the contact portion; At least one infrared LED inserted into the insertion groove, electrically connected to the control unit, and selectively radiating near-infrared, infrared and nuclear-infrared rays; At least one ultraviolet LED inserted and fixed to the insertion groove at a predetermined distance from the infrared LED, electrically connected to the control unit, and selectively emitting ultraviolet rays in a wavelength band of 200 to 400 nm; A vibrator installed at the front center of the contact portion and connected to the head in contact with the skin to impart vibration thereto; A second sensing sensor installed in a space between the infrared LED and the ultraviolet LED, the second sensor being connected to the control unit and switching to drive the infrared LED, the ultraviolet LED, and the vibrator in a control order only when the skin is in contact; A first device installed in a space between the infrared LED and the ultraviolet LED and connected to the controller to detect a state of the skin upon skin contact and to transmit a detection value to the controller so that a skin care program suitable for the user's skin is performed; Skin care device, characterized in that configured to include a sensor. The method according to claim 1; The skin care device, characterized in that a cover made of any one material selected from quartz, EPDM, and polymer series is further installed in the insertion groove in which the infrared LED and the ultraviolet LED are fixedly installed. The method according to claim 1 or 2; The vibrator is a skin care device, characterized in that the ultrasonic vibrator or piezoelectric ceramic emitting a frequency of 20Khz ~ 10Mhz. The method according to claim 3; The second sensor is a proximity sensor or a pressure sensor, the first sensor is a skin care device, characterized in that the oil, moisture measuring sensor. The method according to claim 1; Skin care device, characterized in that the bulb is installed in the housing adjacent the head position. The method according to claim 1; The skin care device, characterized in that the voice output unit is further connected to the control unit, the voice output unit to output the contents displayed on the display window in conjunction with the display window when selected. A pen-shaped body having a printed circuit board having a control unit; An ultraviolet lamp in the form of an LED which is fixed to the front end of the body and electrically connected to the controller and emits ultraviolet rays in the wavelength band of 250 to 310 nm; A proximity sensor installed at a part of the outer edge of the body around the ultraviolet lamp and electrically connected to the controller; And a battery embedded in the rear end of the body and sealed by a cover, and including a battery for supplying power to the printed circuit board, an ultraviolet lamp, and a proximity sensor.

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