KR20200050775A - Tooth brush sterilizer - Google Patents

Abstract

A toothbrush sterilizer according to the embodiment can include a housing, a light emitting device package, and a fixing part. The housing can include a first housing and a second housing connected to the first housing. The light emitting device package can be disposed in the housing to emit ultraviolet rays. The fixing part is disposed in the housing, and the position of a toothbrush can be fixed so that the toothbrush can be disposed in the first region irradiated with ultraviolet rays emitted from the light emitting device package. 1.0 to 2.0 doses (mJ/cm^2) of ultraviolet rays can be irradiated to the first region from the light emitting device package.

Description

Toothbrush sterilizer {TOOTH BRUSH STERILIZER}

An embodiment relates to a toothbrush sterilizer.

Light emitting devices including compounds such as GaN and AlGaN have many advantages such as having a wide and easy to adjust bandgap energy, and are used in various fields.

Light emitting devices such as light emitting diodes or laser diodes using group 3-5 or 2-6 compound semiconductor materials are developed with thin film growth technology and device materials, resulting in yellow, red, green, There is an advantage that can realize light in various wavelength bands such as blue and ultraviolet light. In addition, a light emitting device such as a light emitting diode or a laser diode using a Group 3-5 or 2-6 compound semiconductor material can use a fluorescent material or combine colors to implement a white light source with high efficiency. Such a light emitting device has advantages of low power consumption, semi-permanent life, fast response speed, safety, and environmental friendliness compared to conventional light sources such as fluorescent lamps and incandescent lamps.

In particular, in the case of a light emitting device that emits ultraviolet rays, light having a relatively large wavelength can be emitted from the active layer of the light emitting device. In detail, the light emitting device may emit light having a relatively short peak wavelength band, for example, about 400 nm or less, and the active layer may include a material having a corresponding band gap energy. The light emitting device may be used for sterilization and purification for short wavelengths in the wavelength band, and may be used for an exposure machine or a curing machine for long wavelengths.

In addition, a method of applying a short wavelength light emitting device to various fields such as sterilizing harmful organisms such as bacteria, ticks, and infectious diseases or purifying contaminated water has been studied.

The embodiment can provide a toothbrush sterilizer with improved sterilization efficiency and capable of sterilizing more than 99.99% of E. coli.

The embodiment may provide a toothbrush sterilizer that is small in size and easy to carry.

Embodiments may provide a toothbrush sterilizer that can reduce power consumption.

Toothbrush sterilizer according to the embodiment, the housing including a first housing and a second housing connected to the first housing; A light emitting device package disposed in the housing to emit ultraviolet light; A fixing part disposed in the housing and fixing a position of the toothbrush so that a toothbrush may be disposed in a first region irradiated with ultraviolet rays emitted from the light emitting device package; Including, 1.0 dose (mJ / cm ² ) to 2.0 dose (mJ / cm ² ) may be irradiated to the first region from the light emitting device package.

According to an embodiment, the first region may be provided 10 to 20 mm apart from the light emitting device package.

According to an embodiment, the fixing part includes a first surface and a second surface forming a locking groove, and the locking groove is provided parallel to the light emitting surface of the light emitting device package, and the light exiting from the first surface The distance from the surface may be shorter from the second surface to the light exit surface, and the distance from the first surface to the light exit surface may be equal to or less than 20 mm.

According to an embodiment, the light emitting device package includes a light emitting device that emits ultraviolet rays and a glass material window disposed on the light emitting device to emit light to the outside, and the light exit surface of the light emitting device package is the It may be the exit surface of the window.

According to an embodiment, ultraviolet rays may be irradiated from the light emitting device package to the first region for 30 seconds to 40 seconds.

According to an embodiment, the light emitting device package is driven with an output of 2 mW to 10 mW, and may emit ultraviolet rays having a wavelength of 250 nm to 300 nm.

According to an embodiment, the maximum intensity angle of the light emitted from the light emitting device package may be 33 degrees and -33 degrees, respectively, on the left and right sides of the optical axis perpendicular to the light exit surface.

According to the toothbrush sterilizer according to the embodiment, sterilization efficiency may be improved, and there is an advantage of sterilizing E. coli to 99.99% or more.

According to the toothbrush sterilizer according to the embodiment, there is an advantage that the size of the housing is small and easy to carry.

According to the toothbrush sterilizer according to the embodiment, there is an advantage that can reduce power consumption.

1 is a view for explaining a toothbrush sterilizer according to an embodiment of the present invention.
FIG. 2 is a view illustrating an example in which a toothbrush is disposed in the toothbrush sterilizer illustrated in FIG. 1.
3 is a view for explaining the illuminance value irradiated to each area in the toothbrush sterilizer shown in FIG. 2.
4 is a view illustrating a light distribution of a light emitting device package applied to a toothbrush sterilizer according to an embodiment of the present invention.
5 is a view for explaining the intensity distribution of ultraviolet light emitted from the light emitting device package shown in FIG. 4.
6 is a view showing an example of a light emitting device package applied to a toothbrush sterilizer according to an embodiment of the present invention.

Hereinafter, embodiments will be described with reference to the accompanying drawings. In the description of the embodiments, each layer (film), region, pattern or structure is "on / over" or "under" the substrate, each layer (film), region, pad or pattern. In the case described as being formed in, "on / over" and "under" include both "directly" or "indirectly" formed through another layer. do. In addition, the criteria for the top / top or bottom of each layer is described based on the drawings, but the embodiment is not limited thereto.

1 is a view for explaining a toothbrush sterilizer according to an embodiment of the present invention.

Toothbrush sterilizer 100 according to the embodiment, as shown in Figure 1, may include a housing 110, a light emitting device package 120, the fixing portion 130.

The housing 110 may include a first housing 111 and a second housing 112. The second housing 112 may be connected to the first housing 111.

For example, the second housing 112 may be connected to the first housing 111 through a fastening unit 140. The second housing 112 may be rotated with respect to the first housing 111. The second housing 112 may open and close the housing 110 through rotational movement with respect to the first housing 111.

In addition, as an embodiment of another coupling state, the second housing 112 may slide relative to the first housing 111. The second housing 112 may open and close the housing 110 through sliding movement with respect to the first housing 111.

The light emitting device package 120 may be disposed in the housing 110. The light emitting device package 120 may be provided in the first housing 110.

The toothbrush sterilizer 100 according to the embodiment may include a substrate 125 providing driving power to the light emitting device package 120. The substrate 125 may be disposed in the first housing 111, and the light emitting device package 120 may be mounted on the substrate 125.

The light emitting device package 120 may emit ultraviolet rays. The light emitting device package 120 may be disposed in the housing 110 to irradiate ultraviolet light to the first region A.

The fixing part 130 may be disposed in the housing 110. For example, the fixing part 130 may be provided in the first housing 111.

The fixing part 130 may include a first surface 131 and a second surface 132. The first surface 131 and the second surface 132 may form a fixing groove 133.

A toothbrush may be fixed to the fixing part 130. A toothbrush may be disposed in the fixing groove 133 of the fixing portion 130. The fixing part 130 may support a toothbrush inserted in the fixing groove 133.

For example, as illustrated in FIG. 2, the bristles 151 of the toothbrush 150 may be provided to face the direction in which the light emitting device package 120 is disposed.

The fixing part 130 may fix the position of the toothbrush 150 so that the toothbrush 150 may be disposed in the first area A where the ultraviolet light emitted from the light emitting device package 120 is irradiated. Can be.

The position of the bristles 151 of the toothbrush 150 may be fixed to the first area A by the fixing part 130. The bristles 151 disposed in the first region A may be sterilized by E. coli or the like by ultraviolet light emitted from the light emitting device package 120.

Dose (mJ / cm) of ultraviolet rays incident on the bristles 151 according to the illuminance (mW / cm ² ) value of the ultraviolet rays incident on the bristles 151 from the light emitting device package 120 and the irradiation time (sec) ² ) Difference occurs in quantity. In addition, a difference in sterilizing power against E. coli or the like present in the bristles 151 is generated according to the dose (mJ / cm ² ) of ultraviolet rays incident on the bristles 151.

The following [Table 1] shows the change of the sterilizing power according to the dose of ultraviolet rays (mJ / cm ² ).

microbe UV Dose (mJ / cm ² ) 0 0.332 0.63 1.89 3.15 E. Coli 0 157: H7
(E. coli) 0% 97.64% 99.97% > 99.99% > 99.99% S. Typhimurium
(Salmonella) 0% 97.81% 99.78% > 99.99% > 99.99% L. monocywogenes
(Listeria) 0% 59.57% 88.25% 99.97% > 99.99%

[Table 1] is data for evaluating the sterilizing power of microorganisms for the amount of dose (mJ / cm ² ), which is the energy value incident on the unit area. Referring to Table 1, when 0.63 mJ / cm ² doses were added to the microorganism, E. coli O 157: H7 and Salmonella (S. Typhimuriu) were found to be sterilized by about 99% or more. It can be seen that L. monocywogenes are sterilized by about 88% or more. In addition, 1.89mJ / cm ² to the microorganism When Does is added, it can be seen that E. coli, Salmonella, and Listeria are sterilized by about 99% or more. In addition, 3.15mJ / cm ² to the microorganism When Does is added, it can be seen that E. coli, Salmonella, and Listeria are sterilized by about 99.99% or more.

According to an embodiment, in order to improve the sterilizing power for the bristles 151, an experiment was conducted to select the amount of required doses to be irradiated to the bristle 151 from the light emitting device package 120.

In an embodiment, as shown in FIGS. 2 and 3, the bristles 151 are arranged in the first area A, and the first to third detectors arranged in each area of the bristle 151 ( Through 161, 162, and 163, the illuminance (mW / cm ² ) value irradiated to each detector from the light emitting device package 120 was measured.

The first detector 161, the second detector 162, and the third detector 163 were sequentially disposed from the light emitting device package 120. The first detector 161 is arranged to correspond to the position of the tip of the bristle 161. The third detector 163 is disposed such that the bristles 161 correspond to a position extending from the toothbrush 150, that is, a position of the first end. The second detector 162 was disposed between the first detector 161 and the third detector 163.

For example, the interval a2 between the first detector 161 and the second detector 162 and the interval a1 between the second detector 162 and the third detector 163 are set to the same interval. Can be. As an example, the "a1" and "a2" may be set to 5mm. In addition, an interval a3 between the first detector 161 and the light emitting device package 120 may be set to 10 mm, for example.

The values of “a1”, “a2”, and “a3” may be set according to the light distribution and the directivity of the light emitting device package 120. In an embodiment, considering the light distribution distribution and the directional angle characteristics of the light emitting device package 120, the bristles 151 are located in the first area A where ultraviolet light can be sufficiently irradiated from the light emitting device package 120. To be placed.

FIG. 3 shows the distribution of the illuminance (mW / cm ² ) values detected at each detector in color, and [Table 2] is data summarizing the illuminance (mW / cm ² ) values detected at each detector.

 Detector Illuminance (mW / cm ² ) Maximum Minimum value medium First detector 0.254 0.125 0.203 Second detector 0.127 0.093 0.113 Third detector 0.075 0.059 0.068

As can be seen from the data summarized in Table 2, the illuminance detected by the first detector 161 disposed closest to the light emitting device package 120 was measured the largest. In addition, the illuminance detected by the third detector 163 disposed farthest from the light emitting device package 120 was measured to be the smallest.

According to the toothbrush sterilizer according to the embodiment, the area of the area of the first detector 161 or the area of the first area A facing the light exit surface of the light emitting device package 120 is 10 mm wide and 25 mm long. Can be set. This is set in consideration of the light distribution distribution of the light emitting device package 120 and the directivity characteristic of light, and it is considered that ultraviolet light emitted from the light emitting device package 120 can be sufficiently irradiated to the corresponding area.

On the other hand, if the area or space size of the first area (A) needs to be larger, or if the irradiation area of ultraviolet rays provided from the light emitting device package 120 needs to be expanded, the light emitting device applied to the light emitting device package 120 Considering the irradiation angle of, it is also possible to increase the number of light emitting elements.

According to an embodiment, the light emitting device package 120 may include one light emitting device or a plurality of light emitting devices, if necessary. Further, the light emitting device package 120 may include a light emitting device array to which a plurality of light emitting devices are applied.

According to an embodiment, referring to the data in Table 1 and Table 2, 1.0 dose (mJ / cm ² ) to 2.0 dose (mJ / cm ² ) from the light emitting device package 120 to the first area. ). More specifically, 1.6 doses (mJ / cm ² ) to 1.9 doses (mJ / cm ² ) could be irradiated.

For example, since the minimum illuminance value measured by the third detector 163 is 0.059, a value greater than or equal to 1.89 doses may be satisfied when irradiated for more than 32 seconds. As described with reference to [Table 1] above, it can be seen that when 1.89 doses are satisfied, Escherichia coli and Salmonella are sterilized by 99.99% or more, and Listeria is sterilized by about 99.97% or more.

As described above, according to the toothbrush sterilizer 100 according to the embodiment, ultraviolet rays can be irradiated from the light emitting device package 120 to the first region A for 30 seconds to 40 seconds. Accordingly, it is possible to secure a sterilizing power of 99.9% or more in the entire area of the bristles 161.

According to an embodiment, the first region A may be provided between 10 mm and 20 mm from the light emitting device package 120. This is set in consideration of the light distribution of the light emitting device package 120 and the directivity of ultraviolet rays. For example, the light distribution and directivity characteristics of the light emitting device package 120 according to the embodiment may have characteristics as shown in FIGS. 4 and 5.

For example, the maximum intensity angle of light emitted from the light emitting device package 120 may be provided at 33 degrees and -33 degrees, respectively, on the left and right sides of the optical axis perpendicular to the light exit surface.

Set so that the first area (A) from the light emitting device package 120 is the same or closer than 20mm so that the illuminance of the ultraviolet light irradiated from the light emitting device package 120 can be maintained above an appropriate value Did.

In addition, in consideration of the directivity characteristic of the ultraviolet light emitted from the light emitting device package 120, the first area (A) is 10 mm from the light emitting device package 120 so that the ultraviolet light can be irradiated to the entire area of the brush head end. It was set so that it could be located the same or farther than that.

Meanwhile, the fixing part 130 may include a first surface 131 and a second surface 132 forming the locking groove 133. The engaging groove 133 may be provided parallel to the light exit surface of the light emitting device package 120. The distance from the first surface 131 to the light output surface is shorter, and the distance from the second surface 132 to the light output surface is shorter, and from the first surface 131 to the light output surface. The distance can be provided equal to or less than 20 mm.

By setting the position of the fixing part 130 in this way, the bristles 151 supported and fixed by the fixing part 130 can be stably arranged in the first region A. Accordingly, the bristles such as Escherichia coli can be sterilized by 99.99% or more by ultraviolet rays irradiated from the light emitting device package 120 of the bristles 151 disposed in the first region A.

Meanwhile, the light emitting device package 120 may include a light emitting device that emits ultraviolet rays, and a glass material window disposed on the light emitting device and emitting light to the outside. The light exit surface of the light emitting device package 120 may indicate the exit surface of the window.

The light emitting device package 120 according to the embodiment is driven with an output of 2mW to 10mW, and may provide ultraviolet rays having a wavelength of 250nm to 300nm.

In addition, the second housing 112 may be rotated or slided from the first housing 111 to open and close the interior space of the housing 110.

Toothbrush sterilizer 100 according to the embodiment, detects that the housing 110 is switched from the open state to the closed state, drives the light emitting device package 120 for a set time to emit ultraviolet rays, and the set time After this, the driving of the light emitting device package 120 may be stopped to further include a control unit that does not emit ultraviolet rays.

For example, when ultraviolet rays are irradiated for 30 seconds to 40 seconds in the toothbrush sterilizer according to the embodiment, E. coli or the like present in the inserted bristles 151 can be sterilized by 99.99% or more. Therefore, when the second housing 120 is opened, and after the bristles 151 are inserted into the fixing part 130, it is detected that the second housing 120 is closed, the light emitting element is only for 30 seconds to 40 seconds. The package 120 may be driven to irradiate ultraviolet rays to the bristles 151 and then stop the output of the light emitting device package 120. Accordingly, since the light emitting device package 120 needs to be driven only for a time during which sterilization is required, power consumption can be reduced.

For example, the light emitting device package 120 may emit light of about 400 nm or less. More specifically, the light emitting device package 120 may emit light of about 320 nm or less. Further, a peak wavelength of the light emitting device package 120 may be about 250 nm to about 300 nm. More specifically, the peak wavelength of the light emitting device package 120 may be about 260 nm to about 290 nm. In more detail, the peak wavelength of the light emitting device package 120 may be about 270 nm to about 280 nm.

6 is a view showing an example of a light emitting device package applied to a toothbrush sterilizer according to an embodiment.

Referring to FIG. 6, the light emitting device package 200 includes a body 230 including a recess 237, a plurality of electrodes 251, 252, and 253 disposed on the recess 237, and the plurality of A light emitting device 210 disposed on at least one of the electrodes 251, 252, and 253, and a transparent window 290 disposed on the recess 237 may be included.

For example, the light emitting device 210 may emit ultraviolet wavelengths in a range of about 10 nm to 400 nm. In detail, the light emitting device 210 may emit ultraviolet wavelengths in the UV-A, UV-B and UV-C region.

The light emitting device 210 may be formed of a compound semiconductor of a group II and VI element, or a compound semiconductor of a group III and V element. For example, a semiconductor light emitting device manufactured using a compound semiconductor of a series such as AlInGaN, InGaN, AlGaN, GaN, GaAs, InGaP, AllnGaP, InP, InGaAs may be selectively included. The light emitting device 210 may include an n-type semiconductor layer, a p-type semiconductor layer, and an active layer, and the active layer is InGaN / GaN, InGaN / AlGaN, InGaN / InGaN, GaN / AlGaN, InAlGaN / InAlGaN, AlGaAs / GaAs, InGaAs / GaAs, InGaP / GaP, AlInGaP / InGaP, InP / GaAs can be implemented in pairs.

The body 230 may include an insulating material, for example, a ceramic material. The ceramic material may include low temperature co-fired ceramic (LTCC) or high temperature co-fired ceramic (HTCC), which are simultaneously fired. The material of the body 230 may be, for example, AlN, and may include a metal nitride having a thermal conductivity of 140 W / mK or more.

The body 230 may include a stepped structure. In detail, the upper circumference of the body 230 may include a stepped structure 233. The stepped structure 233 may be disposed around an upper portion of the recess 237 in an area lower than an upper surface of the body 230. The depth of the stepped structure 233 is a depth from the top surface of the body 230, and may be formed deeper than the thickness of the transparent window 290.

The recess 237 is an area in which a part of the upper region of the body 230 is open, and may be formed at a predetermined depth from the upper surface of the body 230. For example, the bottom of the recess 237 may be formed to a depth deeper than the stepped structure 233 of the body 230. The position of the stepped structure 233 may be arranged in consideration of the height of the first connecting member connected to the light emitting chip 210 disposed on the bottom of the recess 237. Here, the direction in which the recess 237 is opened may be a direction in which light generated from the light emitting element 210 is emitted.

The recess 237 may include a polygonal, circular, or elliptical top view shape. The recess 237 may have a chamfered edge, for example, a curved surface. Here, the recess 237 may be located inside the stepped structure 233 of the body 230.

The lower width of the recess 237 may be formed to be the same width as the upper width of the recess 237 or the upper width may be formed wider. In addition, the side wall 231 of the recess 237 may be formed perpendicular or inclined to the extension line of the lower surface of the recess 237.

For example, a plurality of electrodes 251, 252, and 253 are disposed in the recess 237, and the plurality of electrodes 251, 252, and 253 can selectively supply power to the light emitting element 210. . The plurality of electrodes 251, 252, and 253 may include metal. For example, the electrodes 251, 252, and 253 are among platinum (Pt), titanium (Ti), copper (Cu), nickel (Ni), gold (Au), tantalum (Ta), and aluminum (Al). It may include at least one. At least one of the plurality of electrodes 251, 252, and 253 may be formed as a single layer or multiple layers. For example, when the electrodes 251, 252, and 253 are formed in a multi-layer, gold (Au) having good bonding characteristics may be disposed on the uppermost layer, and titanium having good adhesion to the body 230 may be disposed on the lowermost layer ( Ti), chromium (Cr), and tantalum (Ta) may be disposed. In addition, platinum (Pt), nickel (Ni), copper (Cu), or the like may be disposed in the intermediate layer between the top and bottom layers.

The electrodes 251, 252, and 253 may include a first electrode 251 on which the light emitting element 210 is disposed, a second electrode 252 and a third electrode 253 spaced apart from the first electrode 251. It can contain. The first electrode 251 is disposed at the bottom center of the recess 237, and the second electrode 252 and the third electrode 253 may be disposed on both sides of the first electrode 251. . In addition, any one of the first electrode 251 and the second electrode 252 may be removed, but is not limited thereto. The light emitting device 210 may be disposed on a plurality of electrodes among the first to third electrodes 251, 252, and 253, but is not limited thereto.

A power having a first polarity may be supplied to the first electrode 251. Also, power of a second polarity may be supplied to the second electrode 252 and the third electrode 253. The polarity of the electrode may vary depending on an electrode pattern or a connection method with each device, but is not limited thereto.

The light emitting device 210 may be disposed in the recess 237. The light emitting device 210 may be bonded to the first electrode 251 with a conductive adhesive, and may be connected to the second electrode 252 with a first connecting member including wires. The light emitting device 210 may be electrically connected to the first and second electrodes 251 and 252 or the third electrode 253. The connection method of the light emitting device 210 may be selectively connected using a wire bonding, die bonding, or flip bonding method, and the chip type and the electrode position of the chip may be changed according to the bonding method.

A plurality of pads 271 and 272 may be disposed on the lower surface of the body 230. For example, a first pad 271 and a second pad 272 that are spaced apart from each other may be disposed on the lower surface of the body 230. At least one of the first and second pads 271 and 272 may be disposed in a plurality to disperse the current path.

A connection pattern 255 may be disposed in the body 230. The connection pattern 255 may provide an electrical connection path between the recess 237 and the lower surface of the body 230. For example, a part of the first electrode 251 may extend into the body 230 and be connected to the connection pattern 255, and may be connected to another electrode through the connection pattern 255.

A transparent window 290 may be disposed on the recess 237. The transparent window 290 may include a glass material, for example, quartz glass. Accordingly, the transparent window 290 may be defined as a material that can transmit light emitted from the light emitting device 210 without damage, such as destruction of bonds between molecules by ultraviolet wavelengths.

The outer edge of the transparent window 290 may be coupled to the stepped structure 233 of the body 230. An adhesive layer 280 is disposed between the transparent window 290 and the stepped structure 233 of the body 230, and the adhesive layer 280 includes a resin material such as silicone or epoxy. The transparent window 290 may be formed to have a wider width than the bottom width of the recess 237. The lower surface area of the transparent window 290 may be formed with a larger area than the bottom area of the recess 237. Accordingly, the transparent window 290 may be easily coupled to the stepped structure 233 of the body 230.

A lens may be coupled to the transparent window 290. For example, a separate lens may be combined on the transparent window 290 to adjust the directivity angle.

Features, structures, effects, etc. described in the above embodiments are included in at least one embodiment, and are not necessarily limited to only one embodiment. Furthermore, features, structures, effects, and the like exemplified in each embodiment may be combined or modified for other embodiments by a person having ordinary knowledge in the field to which the embodiments belong. Therefore, contents related to such combinations and modifications should be interpreted as being included in the scope of the embodiments.

Although the foregoing description has been mainly focused on the embodiments, these are merely examples, and are not intended to limit the embodiments, and those skilled in the art to which the embodiments belong may not be exemplified in the above without departing from the essential characteristics of the present embodiment. You will see that it is possible to modify and apply branches. For example, each component specifically shown in the embodiment can be implemented by modification. In addition, the differences related to the modification and application should be interpreted as being included in the scope of the embodiment set in the appended claims.

100 toothbrush sterilizer
110 housing
111 1st housing
112 second housing
120 light emitting device package
125 substrates
130 fixing part
131 p. 1
P. 132 p. 2
133 fixing groove
140 fastening
150 toothbrush
151 brush head
161 first detector
162 Second detector
163 Third detector

Claims (7)

A housing including a first housing and a second housing connected to the first housing;
A light emitting device package disposed in the housing to emit ultraviolet light;
A fixing part disposed in the housing and fixing a position of the toothbrush so that a toothbrush may be disposed in a first region irradiated with ultraviolet rays emitted from the light emitting device package;
Including,
A toothbrush sterilizer in which 1.0 dose (mJ / cm ² ) to 2.0 dose (mJ / cm ² ) is irradiated to the first region from the light emitting device package. According to claim 1,
The first area is a toothbrush sterilizer provided 10 to 20 mm apart from the light emitting device package. According to claim 1,
The fixing portion includes a first surface and a second surface forming a locking groove,
The engaging groove is provided parallel to the light exit surface of the light emitting device package,
The distance from the first surface to the light exit surface is shorter, and the distance from the second surface to the light exit surface is shorter,
The distance from the first surface to the light exit surface is a toothbrush sterilizer equal to or smaller than 20 mm. According to claim 3,
The light emitting device package includes a light emitting device that emits ultraviolet rays and a glass window disposed on the light emitting device to emit light to the outside,
The light exit surface of the light emitting device package is a toothbrush sterilizer that is the exit surface of the window. According to claim 1,
Toothbrush sterilizer to which the first region is irradiated with ultraviolet light for 30 seconds to 40 seconds from the light emitting device package. The method of claim 5,
The light emitting device package is driven with an output of 2 mW to 10 mW, a toothbrush sterilizer that emits ultraviolet rays having a wavelength of 250 nm to 300 nm. The method of claim 6,
The maximum intensity angle of light irradiated from the light emitting device package is a toothbrush sterilizer having left and right 33 degrees and -33 degrees, respectively, around an optical axis perpendicular to the light exit surface.

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