KR20160066932A - Portable toothbrush sterilizer - Google Patents

Abstract

According to the present invention, disclosed is a portable toothbrush sterilizer. The disclosed portable toothbrush sterilizer comprises: a case having an opening part in one side thereof to accommodate a toothbrush head part having toothbrush bristles inserted therein; an opening and closing door disposed in the case to be rotated; an ultraviolet ray emitting lamp for emitting ultraviolet rays at a wavelength of 390±5 nm to the toothbrush bristles; a control unit for controlling the operation of the ultraviolet ray emitting lamp; and a fan motor disposed to ventilate and circulate air inside of and outside of the case having the toothbrush head part accommodated therein. According to such a structure thereof, convenience in carrying and storing the portable toothbrush sterilizer, utilization, sterilizing efficiency, and economical feasibility may be remarkably improved.

Description

The present invention relates to a portable toothbrush sterilizer,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toothbrush sterilizer, and more particularly, to a portable toothbrush sterilizer which is improved to greatly improve convenience and practicality of portable storage and sterilization efficiency of bristles.

The significance of dental health and management can not be emphasized enough, as the ancient meaning of "dental health is one of the five faults of human health" symbolizes.

As a typical oral hygiene appliance for routine dental health and care, a toothbrush used in conjunction with a toothpaste serves as a primary means to remove food waste and dental plaque that is already formed to form a dental plaque And functions. In addition, the toothbrush will neutralize the acid and perform the role and function to remove dental caries (tooth decay) and illnesses. It is recommended that such a toothbrush be thoroughly cleaned through tap water flowing after brushing and then kept dry so that the toothbrushes do not come into contact with one another in a clean and well-ventilated environment.

However, in the real life, personal hygiene consciousness about the importance of toothbrush management is insufficient because of awareness of the toothbrush storage, education and enlightenment, and most of the cases where the toothbrush is stored after being put in a general cup or a simple storage box It is known.

In fact, according to the results of a study on the total number of bacteria and the type of bacteria by collecting a used toothbrush in a household, it was found that millions of bacteria were attached to the toothbrush, and about 28 kinds of bacteria were present in the toothbrush There is also a known bar.

Especially, the majority of people in Korea have a common place to store their toothbrushes in toilet rooms with toilets. Toilets are not only places where many germs are inhabited, but also because it is very easy to reproduce germs due to the humid environment. Hygienic toothbrush care is required.

Meanwhile, in recent years, a toothbrush sterilizer using ultraviolet sterilizing action has been commercialized in various forms as a means for improving the hygienic condition of the toothbrush, and is commonly used, for example, Korean Patent Publication Nos. 10-0524655 and 10-0786115 .

However, the conventional toothbrush sterilizer disclosed in the above-mentioned patent publication is installed in a wall-mounted type or a stationary type in a toilet and sterilizes a large number of toothbrushes in a state in which the toothbrush is commonly stored. As a result, There is a problem that it can not be used at the time of departure. An example of a portable toothbrush sterilizer commercialized to maximize personal hygiene by disinfecting the bristles with a UV sterilization lamp by individually storing toothbrushes in a case that is easy to carry and storing in order to solve such a problem is disclosed in Korean Patent Registration No. 10-0611934 No. 10-0940560 and Registration Practical Utility Model No. 20-0413887.

However, the conventional toothbrush sterilizer as described above uses an ultraviolet lamp (UV lamp) which is sealed with a mixed gas of mercury and argon and emits ultraviolet light having a short wavelength of 250 nm as a sterilizing means. As a result, the disinfection efficiency and economical efficiency are deteriorated due to the increase of the manufacturing cost, the increase of the power consumption, and the periodical replacement work accompanying the short life span.

In addition, since the ultraviolet sterilizing lamp itself must be manufactured to a certain size or larger, it has a limitation in manufacturing a small compact toothbrush sterilizer for small portable use.

1. Korean Patent Registration No. 10-0524655 2. Korean Patent Registration No. 10-0786115 3. Korean Patent Registration No. 10-0611934 4. Korean Patent Registration No. 10-0940560 5. Registered Utility Model No. 20-0413887 of the Republic of Korea

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a compact clip-type small case having a sterilizing unit and a toothbrush head unit, The present invention provides a portable toothbrush sterilizer that greatly improves the convenience and practicality of portable storage.

Another object of the present invention is to provide a luminescent lamp that emits ultraviolet rays having a wavelength of 390 ± 5 nm, which is longer than the wavelength range of a conventional toothbrush sterilizer light source, by sterilizing means, To provide an improved portable toothbrush sanitizer.

It is still another object of the present invention to provide a portable toothbrush sterilizer in which the drive control of the ultraviolet light lamp is optimized to greatly improve the sterilizing performance and the sterilizing effect by the improvement of the operational functionality.

Still another object of the present invention is to provide a portable toothbrush sterilizer having a remarkably improved economic efficiency and practicality by reducing manufacturing cost and improving productivity by employing a relatively long wavelength 390 ± 5 nm ultraviolet lamp for enabling a small clip type case and low power consumption driving .

In order to achieve the above object, a portable toothbrush sterilizer according to the present invention comprises: a case in which a toothbrush head unit with brush bristles embedded therein is housed; and a UV light emitting lamp incorporated in the case to irradiate the bristles with ultraviolet light having a wavelength of 390 ± 5 nm .

According to another aspect of the present invention, there is provided a toothbrush sterilizer comprising: a case having an opening at one side thereof for receiving a toothbrush head portion having bristles embedded therein; An opening / closing door rotatably provided on the case to selectively open / close the opening; At least one ultraviolet light-emitting lamp embedded in the case to irradiate ultraviolet light having a wavelength of 390 ± 5 nm for sterilizing the bristles of the toothbrush head; A control unit provided in the case to control an operation state of the ultraviolet light-emitting lamp; And a fan motor installed in the case for ventilation of the inside and outside of the case and air circulation.

According to the present invention, it is preferable that the case and the opening / closing door are provided so that holder members for supporting toothbrushes are opposed to each other.

It is preferable that an airtight sealing means is provided between the case and the opening / closing door.

According to an aspect of the present invention, the sealing means may include: a magnet provided at a free end edge of the opening / closing door; a coupling hole formed at an end of the case so that the magnet is complementarily coupled and seated; And a metal piece provided at an edge of the coupling hole to be inserted.

According to another aspect of the present invention, the sealing means may include a sealing member provided on one or both of the contact surfaces of the case and the opening / closing door.

On the other hand, the opening / closing door may have a structure including a dust cover and a dust filter built in the dust cover.

Further, the opening and closing door may further include light reflecting means provided on the inner side surface of the door so as to reflect the light source irradiated from the ultraviolet lamp.

It is preferable that the control unit is installed on the bottom of the case as a main circuit board and a cover plate having a light transmitting panel is provided on the bottom of the case.

According to an aspect of the present invention, the light transmitting panel may include a light diffusing lens, and the light diffusing lens may be formed in a predetermined lens pattern on the light transmitting panel, .

The case may be provided with a universal serial bus (USB) memory connection terminal electrically connected to the control unit.

According to another aspect of the present invention, the case may further include a pocket-use clip protruding from one side.

According to the toothbrush sterilizer of the present invention, the following effects can be obtained.

First, a compact clip-type small case with an ultraviolet light-emitting lamp is housed in a toothbrush head portion in which bristles are planted, thereby greatly improving convenience and practicality of portable storage.

Second, the sterilization efficiency and economical efficiency can be greatly improved by incorporating the ultraviolet lamp of 390 ± 5 nm wavelength into the sterilizing means to enable the low power consumption driving by the miniaturization and the compactness.

Third, by optimizing the drive control of the ultraviolet luminescent lamp to improve the operational functionality, the sterilizing performance and the sterilizing effect can be greatly improved.

Fourth, the economical efficiency and practicality can be greatly improved by reducing the manufacturing cost and increasing the productivity by employing the small clip type case and the ultraviolet luminescent lamp capable of driving low power consumption.

Fifth, since images such as characters can be easily formed on a compact and slimmed outer case, the aesthetics, the likeness, and the familiarity of the product can be easily provided, thereby satisfying the consumer's desire can be improved.

1 is a schematic external perspective view of a portable toothbrush sterilizer according to the present invention.
2 is a schematic perspective view showing a door open state of a portable toothbrush sterilizer according to the present invention.
FIG. 3 is a perspective view showing the opening and closing door of the portable toothbrush sterilizer according to the present invention, taken in another direction. FIG.
FIG. 4 and FIG. 5 are schematic exploded perspective views showing the essential part of the portable toothbrush sterilizer according to the present invention. FIG.
FIG. 6 is a schematic view illustrating an ultraviolet lamp module for sterilizing a portable toothbrush sterilizer according to the present invention. FIG.
FIG. 7 is a block diagram schematically showing a control unit of a portable toothbrush sterilizer according to the present invention. FIG.
FIG. 8 is a schematic external perspective view of a portable toothbrush sterilizer according to another embodiment of the present invention. FIG.
FIG. 9 is a schematic perspective view showing a door open state of the portable toothbrush sterilizer according to another embodiment of the present invention shown in FIG. 8 in another direction. FIG.
10 and 11 are schematic views showing photographs of the main part and the exterior of an experimental apparatus for sterilizing experiments of the portable toothbrush sterilizer according to the present invention, respectively.
FIG. 12 is a schematic view showing photographs of sterilization test results of a portable toothbrush sterilizer according to the present invention. FIG.

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

1 to 5, a portable toothbrush sterilizer 100 according to the present invention includes a toothbrush head 11 protruded to expose a toothbrush 13 of a toothbrush 10 and a bristle 12, An opening and closing door 120 rotatably installed in the case 110 to selectively open and close the opening part, and an opening / closing door 120 provided in the case 110 to open and close the opening part, An ultraviolet light-emitting lamp module 130 embedded in the case 110 to irradiate ultraviolet light of 390 ± 5 nm for sterilizing the bristles 12; A control unit 140 provided in the case 110 and a fan motor 150 installed in the case 110 to ventilate the inside and outside of the case 110 and circulate air.

The case 110 is formed in the shape of a box having an opening portion opened at one side so as to form a cavity in which the toothbrush head portion 11 in which the bristles 12 are planted is housed.

The case 110 has an opening 110a which is seated on the one side wall (lower portion of the drawing) so that the toothbrush head 13 is stuck in the state where the toothbrush head 11 is housed and is protruded so as to be exposed to the outside .

According to an aspect of the present invention, a soft gasket or a sealing member S may be provided around the opening 110a.

The gasket or sealing member S may be formed on the outer circumferential surface of a part of the toothbrush 13 exposed to protrude from the opening 110a while the head 11 of the toothbrush 10 is housed in the case 110. [ Thereby sealing the inner space of the case 110 to effectively block fine dust and foreign matter from entering the case.

According to the present invention, it is preferable that the case 110 is made of a resin molding having elasticity and ductility through a molding process of a synthetic resin material so as to absorb an external impact and the like. But may be formed of various materials such as a metal material such as stainless steel or aluminum, wood such as jade wood, or the like.

 Therefore, the shape of the outer appearance of the case 110 is not limited to a rectangular box shape as shown in the drawing. For example, the case 110 may have a shape such as a character or accessories such as a Mickey Mouse, And can be formed into a molded article having an external shape structure. The outer shape structure of the case 110 imparts esthetics, good feeling, familiarity, and the like, thereby serving to increase the desire and purchasing power of consumers.

The opening and closing door 120 is rotatably provided at one side of the case 110 by a hinge pin 121 and is opened or closed by opening the opening of the case 110. The opening and closing door 120 is opened and closed by the toothbrush head 11 of the toothbrush 10 Can be stored in the cavity of the case 110 or can be separated from the cavity.

According to the present invention, the opening / closing door 120 is provided with a dust cover 122, and a dust filter not shown in the inner side groove portion of the dust cover 122 is provided.

Accordingly, the dust filter (not shown) functions to effectively block the entry of fine dust and foreign matter through ventilation holes (not shown) formed in the form of a gap around the dust cover 122.

According to the present invention, the dust cover 122 is formed of a transparent material or a semi-transparent material so that the ultraviolet lamp module 130 provided inside the case 110 can be visually checked .

According to an aspect of the present invention, a light reflecting means (not shown) such as a mirror or a silver coated paper may be provided on the inner side surface of the opening / closing door 120.

The light reflecting means reflects the ultraviolet light emitted from the bottom of the case 110 toward the bristles 12 through the ultraviolet lamp module 130 to be described later so as to maximize the light efficiency will be.

Reference numerals 113a and 113b denote holder members provided at positions where the case 110 and the opening / closing door 120 are opposed to each other.

The holder members 113a and 113b are formed by resin molding in the form of a plate having a concave portion so as to be able to hold and support the outer circumference of the toothbrush bag 13 around the opening 110a of the case 110. [ As shown in Fig.

The holder members 113a and 113b are respectively coupled to the opening 110a of the case 110 so as to be engaged with the case 110 and the opening and closing door 120, To act to prevent flow.

Meanwhile, the portable toothbrush sterilizer 100 according to the present invention may include a sealing means for enhancing airtightness between the case 110 and the opening / closing door 120.

Reference numerals 110h, 110m and 120m denote constituent elements of the above-mentioned sealing means, and reference numeral 120m denotes a block type magnet (magnet) provided at the free end edge portion of the opening / closing door 120, . Reference numeral 110h designates a coupling hole formed at an end of the case 110 so that the magnet 120m of the opening and closing door 120 is complementarily engaged and seated and a door 110m is closed when the opening and closing door 120 is closed And is exposed at the upper end of the rim of the coupling hole 110h to be received by the magnetic force of the magnet (magnet).

In the portable toothbrush sterilizer 100 of the present invention in which the embodiment having the sealing means made up of the magnet 120m, the coupling hole 110h and the metal piece 11m as described above is applied, the case 110 is molded with a synthetic resin material And the metal piece 110m is exposed at the upper end of the coupling hole 110h of the case 110 by, for example, inserting molding.

Accordingly, in the portable toothbrush sterilizer 100 according to the present invention, the magnet (magnet 120m) is inserted into the coupling hole 110h of the case 110 while the opening and closing door 120 is closed to close the opening of the case 110 Lt; / RTI > At this time, the magnet 120m is attached to the metal piece 110m provided on the rim of the coupling hole 110h with a magnetic force. Accordingly, the magnet 120m and the metal piece 110m perform a role and function as a sealing means for enhancing the airtightness of the case 110 and the opening and closing door 120. [

According to another aspect of the present invention, the case 110 may be formed of a metallic material. When the case 110 is formed of a metal material, the edges of the magnet 120m and the coupling hole 110h are directly caught by the magnetic force to function as a sealing means capable of increasing the airtightness, Molding can be excluded.

According to another aspect of the present invention, the sealing means is not specified by the magnet 120m, the coupling hole 110h and the metal piece 110m as described above. For example, the case 110, It is needless to say that various known sealing means having a sealing member S such as a gasket or the like may be used between the contact surfaces of the door 120.

6, the ultraviolet light-emitting lamp module 130 includes a surface-mount LED (Light Emitting Diode) chip (not shown) with a heat sink (not shown) A plurality of packages mounted on a sub circuit board (not shown) are formed to form an array, and are mounted to be electrically connected to a control unit 140 described later.

The light emitting diode chip of the ultraviolet light emitting lamp module 130 irradiates ultraviolet light having a wavelength of 390 ± 5 nm and is connected to a universal serial bus USB memory connection terminal 160 For example, by direct current 5V power supply, it is possible to effectively realize driving with low power consumption.

Generally, the effect on ultraviolet germicidal action is known to be most effective in short wavelength to ultraviolet rays in the range of 250 to 260 nm, while the longer the wavelength range, the more the germicidal effect tends to decrease. It is known.

Meanwhile, in the portable toothbrush sterilizer 100 according to the present invention, the size of the cavity space of the case 110 is minimized so as to minimize the sterilizing space, thereby increasing the sterilizing efficiency and reducing the manufacturing cost Unlike a light source applied to a conventional toothbrush sterilizer, it is intended to secure effective sterilizing performance and sterilization effect in a long wavelength band of 380 to 410 nm.

That is, the portable toothbrush sterilizer 100 according to the present invention reduces the manufacturing cost by using the ultraviolet lamp of 390 ± 5 nm wavelength as the germicidal means, and at the same time, has the sterilizing and disinfecting effects of the conventional toothbrush sterilizer, The fact that the sterilization efficiency can be improved can be confirmed through experiments, and the results of the experiments will be described later.

7, the control unit 140 includes a power unit 141 to which a battery 141b having a PCM (Pulse Code Modulation) circuit 141a and a universal serial bus (USB) memory connection terminal 160 are connected, And a controller 142 for connecting the driving drive 130a of the ultraviolet lamp module 130. [

In FIG. 7, reference numeral 142a denotes a status indicator such as an LED for indicating the driving state of the ultraviolet lamp module 130. That is, the status indicator 142a indicates the operation state of the ultraviolet light-emitting lamp module 130 through the operation of the ON or OFF state of the signal information transmitted from the controller 142 And battery power information to the user.

According to an aspect of the present invention, the controller 140 may control the plurality of ultraviolet lamp modules 130 (130a, 130b) through the control of the respective drive drives 130a according to a control pattern previously input by power application from the battery 141b. On / off state of each of the transistors Q1 to Qn. According to this configuration, it is possible to maximize the sterilization efficiency by irradiating the ultraviolet light at the optimum time through the previously inputted reference information and the timer function.

According to another aspect of the present invention, a user can selectively control the operation state of the ultraviolet light-emission lamp module 130 through the operation of a separately provided power switch (S / W). According to such a configuration, since the portable toothbrush sterilizer 100 can be selected and operated in an optimal state according to the state of use of the toothbrush or the usage situation of the user, the use efficiency of the portable toothbrush sterilizer can be improved, .

4 and 5, the controller 140 is installed on the bottom of the case 110 as a main circuit board, and the ultraviolet light- The module 130 is mounted.

3 to 5, the controller 140 is installed so as to be protected by a cover plate 111 provided inside the case 110 so as to be positioned above the cover 140. The center of the cover plate 111 An opened through hole 111a is formed, and a light transmitting panel 112 is provided in the through hole 111a.

The cover plate 111 and the light transmitting panel 112 function as a supporting panel for supporting the toothbrush head 11 while the light transmitting panel 112 is provided with an ultraviolet light irradiated from the ultraviolet lamp module 130 For example, a light diffusing lens (L), which functions to uniformly illuminate the bristles (12).

According to an aspect of the present invention, the light diffusion lens L may have a structure in which various lens patterns such as a plurality of concentric circles or ellipses are integrally formed on the light transmitting panel 112, and on the other hand, May have a configuration in which separate lens members are stacked.

The fan motor 150 is provided for internal and external ventilation and air circulation of the case 110. The fan motor 150 is installed in a position (upper portion in the drawing) opposite to the opening 110a of the case 110 .

According to the present invention, it is preferable that the fan motor 150 is provided so as to have at least one or two or more miniature fan motors of several mm thickness developed and marketed, for example, for a notebook computer or a small precision instrument.

The fan motor 150 functions to efficiently perform ventilation and air circulation with respect to the internal space of the case 110. Therefore, it is possible to maximize ultraviolet sterilization effect and sterilization efficiency by acting to suppress the propagation of germs remaining in the inner space of the case 110. Therefore, in the portable toothbrush sterilizer 100 according to the present invention, It is possible to optimize the sanitary condition and the management state of the sanitary system.

8 and 9 are perspective views showing an external perspective view and a door open state of the portable toothbrush sterilizer according to another embodiment of the present invention in different directions, .

8 and 9, the portable toothbrush sterilizer 100 of the present invention has a structure in which the pocket 110 is further provided with a pocket 170 for clip insertion.

The pocket-use clip 170 is integrally provided on the opening / closing door 120 as well as on one side wall of the case 110 so as to have substantially the same function and function as the pocket-use clip of the pen or pen Lt; / RTI > The portable toothbrush sterilizer 100 according to the present invention having such a configuration can be easily carried and stored by being inserted into a pocket or bag of a user's pocket using the pocket-use clip 170, so that convenience and practicality can be greatly improved .

Hereinafter, experimental results for confirming the sterilizing performance and the sterilizing effect of the portable toothbrush sterilizer according to the present invention will be described in detail.

FIGS. 10 and 11 illustrate photographs of the sterilizer of the portable toothbrush according to the present invention by photographing and preparing an experimental apparatus for confirming sterilizing performance and sterilizing effect. In this experimental setup, a UV LED array with a wavelength of 390 nm and a wavelength of 410 nm with a power of 50 mA was installed as a light source for sterilization, respectively, and the light was irradiated at 0.5 cm, 1.0 cm, 1.5 cm, Each E. coli was irradiated with ultraviolet rays for 1 hour at intervals of 15 minutes to determine the viability of E. coli.

10 and 11, reference numeral 210 denotes a case of an experimental apparatus corresponding to the case 110 of the portable toothbrush sterilizer 100 according to the present invention, and reference numeral 240 denotes a portable toothbrush sterilizer 100 according to the present invention. The control unit 140 of FIG. In the figure, reference numeral 230 denotes an ultraviolet light emitting diode array having a wavelength of 390 nm and a wavelength of 410 nm, which is embedded in a case 240 of the experimental apparatus and has an output of 50 mA.

In order to prepare a solid medium (LB plate) for measuring the sterilization range of Escherichia coli, Escherichia coli collected from a single colony was shake cultured in LB broth for 16 hours at 37 ° C.

In order to uniformly disperse E. coli in a solid medium (LB plate), the cultured bacteria were centrifuged at 3,000 rpm for 20 minutes. Then, to uniformly coat the collected bacteria on a solid medium (LB plate), 3 ml 0.8% LB agar was added, mixed well with a vortex mixer, and the culture solution was uniformly applied by pouring the bacteria collected on a 1.5% solid medium (LB agar plate) preheated at 37 ° C.

The sterilization range of Escherichia coli was determined by fixing the UV LED array at a constant distance so as to be perpendicular to the solid medium to which the bacteria were applied, and then irradiated with ultraviolet light for each measurement time.

Thereafter, it was cultured at 37 ° C for 16 hours. The presence or absence of the transparent ring and the size thereof were measured. As a result, the disinfection effect of the ultraviolet light emitting diode array with the output of 50 mA at a wavelength of 410 nm was not confirmed.

However, with the ultraviolet light emitting diode array having a wavelength of 390 nm having an output power of 50 mA, it was confirmed by visually observing that a transparent ring of about 0.8 cm appears as a sterilizing region while ultraviolet rays are irradiated for 15 minutes at a distance of 0.5 cm. FIG. 12 is a photograph showing a phenomenon in which the transparent ring of about 0.8 cm appears as a sterilization zone. As a result of this experiment, it can be seen that an ultraviolet light emitting diode array having a wavelength of 390 nm can obtain effective sterilizing effect and sterilizing effect.

Therefore, the portable toothbrush sterilizer 100 according to the present invention is provided with an ultraviolet light lamp for irradiating ultraviolet light of wavelength 390 + 5 nm so as to be separated from the bristles 12 by a distance of 1 cm or less, Since the sterilizing function by drive of low power consumption can be given by driving control to irradiate light, sterilizing efficiency and economical efficiency can be remarkably improved, and a compact clip-type small case can greatly improve the convenience and practicality of portable storage Can be improved.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is to be understood that various modifications may be made, and such modifications are intended to fall within the scope of the appended claims.

10: toothbrush 11: toothbrush head
12: bristles 13: toothbrush handle
110: Case 110a:
111: cover plate 111a: through hole
112: light projecting panel 113a, 113b: holder member
120: opening / closing door 121: hinge pin
122: dust filter cover 130: ultraviolet lamp module
140: controller 150: fan motor
160: USB power 170: Pocket clip with clip

Claims (10)

A case in which a toothbrush head unit with bristles embedded therein is accommodated; and an ultraviolet light-emitting lamp embedded in the case to irradiate ultraviolet light having a wavelength of 390 ± 5 nm to the bristles. A case having an opening at one side for accommodating a toothbrush head portion in which bristles are planted;
An opening / closing door rotatably provided on the case to selectively open / close the opening;
At least one ultraviolet light-emitting lamp embedded in the case to irradiate ultraviolet light having a wavelength of 390 ± 5 nm for sterilizing the bristles of the toothbrush head;
A control unit provided in the case to control an operation state of the ultraviolet light-emitting lamp;
And a fan motor provided in the case for ventilation of the inside and outside of the case and air circulation. 3. The method of claim 2,
Wherein the case and the opening / closing door are provided so that holder members for supporting the toothbrushes are opposed to each other. 3. The method of claim 2,
And an airtight sealing means is further provided between the case and the opening / closing door. 5. The method of claim 4,
The sealing means may include a magnet provided at each of the free end corners of the opening and closing door, a coupling hole formed in a shape of a groove on the end of the case so that the magnet is complementarily coupled and seated, And a metal piece provided on an edge of the hole. 3. The method of claim 2,
Wherein the opening / closing door further comprises a dust cover and a dust filter built in the cover. 3. The method of claim 2,
Wherein the controller is mounted on an inner bottom of the case in a state of a main circuit board, and a cover plate having a light transmitting panel is provided on the inner bottom of the case. 8. The method of claim 7,
Wherein the light transmitting panel is provided with a light diffusing lens. 3. The method of claim 2,
Wherein the case is provided with a universal serial bus (USB) memory connection terminal electrically connected to the control unit. 3. The method of claim 2,
Wherein the case further comprises a pocket for a pocket insert.

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