阅读说明：本技术 一种紫外消毒杀菌装置、面罩及其制备方法 (Ultraviolet disinfection and sterilization device, mask and preparation method of mask ) 是由 申小飞 曹永革 李英魁 麻朝阳 文子诚 于 2020-07-10 设计创作，主要内容包括：本申请提供一种紫外消毒杀菌装置、面罩及其制备方法,属于净化装置技术领域。紫外消毒杀菌装置包括装置本体、固定罩、能够截留细菌的过滤层和能够产生紫外光的紫外杀菌部。装置本体具有净化侧,固定罩与装置本体连接,固定罩上具有进气口和出气口,出气口位于装置本体的净化侧。过滤层设置于固定罩内,使进气口进入的气体穿过过滤层以后,从出气口排出。紫外杀菌部设置于固定罩内,且位于过滤层与进气口之间,且紫外杀菌部产生的紫外光可直接照射过滤层的进气面,以使被截留于过滤层的细菌能被紫外光灭杀。此紫外消毒杀菌装置不仅能够过滤细菌,还可以杀死细菌,具有很好的杀菌消毒效果。(The application provides an ultraviolet disinfection and sterilization device, a mask and a preparation method of the mask, and belongs to the technical field of purification devices. The ultraviolet disinfection and sterilization device comprises a device body, a fixed cover, a filter layer capable of intercepting bacteria and an ultraviolet sterilization part capable of generating ultraviolet light. The device body has the purification side, and fixed cover and this body coupling of device have air inlet and gas outlet on the fixed cover, and the gas outlet is located the purification side of device body. The filter layer is arranged in the fixed cover, so that the gas entering from the gas inlet passes through the filter layer and is discharged from the gas outlet. The ultraviolet sterilization part is arranged in the fixed cover and is positioned between the filter layer and the air inlet, and ultraviolet light generated by the ultraviolet sterilization part can directly irradiate the air inlet surface of the filter layer, so that bacteria intercepted on the filter layer can be sterilized by the ultraviolet light. The ultraviolet disinfection and sterilization device not only can filter bacteria, but also can kill the bacteria, and has good disinfection and sterilization effects.)

1. An ultraviolet disinfection and sterilization device, comprising:

a device body having a purge side;

the fixed cover is connected with the device body, an air inlet and an air outlet are formed in the fixed cover, and the air outlet is located on the purifying side of the device body;

the filter layer is arranged in the fixed cover, so that gas entering from the gas inlet passes through the filter layer and is discharged from the gas outlet;

the ultraviolet sterilization portion that can produce the ultraviolet light, the ultraviolet sterilization portion set up in the fixed cover, and be located the filter layer with between the air inlet, just the ultraviolet light that the ultraviolet sterilization portion produced can direct irradiation the inlet surface of filter layer, so that be held back in the bacterium of filter layer can be killed by the ultraviolet light.

2. The ultraviolet disinfection apparatus of claim 1, wherein the ultraviolet sterilization part comprises a plurality of scattered ultraviolet point light sources, an air flow channel for air to pass through is arranged between the plurality of ultraviolet point light sources, and the ultraviolet light generated by the plurality of ultraviolet point light sources can directly irradiate the air inlet surface of the filter layer.

3. The ultraviolet disinfection device of claim 2, wherein the ultraviolet sterilization part further comprises a circuit board, the ultraviolet point light source is an ultraviolet lamp bead, the circuit board is disposed in the fixing cover and between the filter layer and the air inlet, the plurality of ultraviolet lamp beads are disposed on one side of the circuit board close to the filter layer and electrically connected to the circuit board, so that ultraviolet light emitted by the plurality of ultraviolet lamp beads can directly irradiate the air inlet surface of the filter layer.

4. The ultraviolet disinfection and sterilization apparatus of claim 3, wherein said circuit board is substantially parallel to said filter layer, and the distance between said circuit board and said filter layer is 2-20 cm.

5. The ultraviolet disinfection and sterilization apparatus as claimed in claim 3 or 4, wherein said air inlet and said air outlet are respectively disposed on two opposite bottom walls of said fixing cover, the periphery of said circuit board is connected with said fixing cover, a plurality of air holes are disposed on the position of said circuit board near said air inlet, so that said air flow channel is formed between a plurality of said ultraviolet lamp beads, and a plurality of said ultraviolet lamp beads are disposed on the area of said circuit board near said air holes.

6. The UV sterilizer of claim 3 or 4, wherein the maximum light emitting angle of the UV lamp bead is 120 °.

7. The ultraviolet disinfection and sterilization apparatus of claim 3 or 4, wherein said ultraviolet lamp bead comprises:

the substrate is fixed on the circuit board;

the annular heat conduction dam is arranged on one side of the substrate, which is far away from the circuit board, and protrudes out of the surface of the substrate, so that a groove is formed between the heat conduction dam and the substrate;

the ultraviolet chip is arranged on the substrate and positioned in the groove, and the ultraviolet chip is electrically connected with the circuit board;

the lens cover in the ultraviolet chip, the edge of lens is provided with annular weldable layer, but the weldable layer with keeping away from of heat conduction box dam one side welding of base plate.

8. The UV sterilizer of claim 7, wherein said solderable layer comprises one of a gold solderable layer, a silver solderable layer, a tin solderable layer, and alloys thereof; the lens is a glass lens or a ceramic lens.

9. An ultraviolet disinfection and sterilization mask, comprising:

a mask body having a wearing surface;

the fixed cover is connected with the mask body, an air inlet and an air outlet are formed in the fixed cover, and the air outlet is positioned on one side of the wearing surface of the mask body;

the filter layer is arranged in the fixed cover, so that gas entering from the gas inlet passes through the filter layer and is discharged from the gas outlet;

the ultraviolet sterilization portion that can produce the ultraviolet light, the ultraviolet sterilization portion set up in the fixed cover, and be located the filter layer with between the air inlet, just the ultraviolet light that the ultraviolet sterilization portion produced can direct irradiation the inlet surface of filter layer, so that be held back in the bacterium of filter layer can be killed by the ultraviolet light.

10. A method for preparing the ultraviolet disinfection and sterilization apparatus as claimed in any one of claims 1 to 8, comprising:

fixing the filter layer and the ultraviolet sterilization part in the fixed cover, so that the ultraviolet sterilization part is positioned between the filter layer and the air inlet of the fixed cover;

connecting the fixing cover with the apparatus body so that the air outlet of the fixing cover is located on the purge side of the apparatus body.

Technical Field

The application relates to the technical field of medical instruments, in particular to an ultraviolet disinfection and sterilization device, a mask and a preparation method of the mask.

Background

The ultraviolet light source has been proved to have good functions of killing virus and bacteria, the wavelength of the ultraviolet light is in the range of 240-280nm, and the ultraviolet light most kills and destroys the molecular structure of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in the bacteria and the virus, so that the growth cell death and/or the regenerative cell death are caused, and the effects of sterilization and disinfection are achieved.

Disclosure of Invention

The application aims to provide an ultraviolet disinfection and sterilization device, a mask and a preparation method of the mask, and the mask has a better disinfection and sterilization effect.

First aspect, the application provides an ultraviolet disinfection and sterilization device, including device body, fixed cover, the filter layer that can hold back the bacterium and the ultraviolet sterilization portion that can produce ultraviolet light. The device body has the purification side, and fixed cover and this body coupling of device have air inlet and gas outlet on the fixed cover, and the gas outlet is located the purification side of device body. The filter layer is arranged in the fixed cover, so that the gas entering from the gas inlet passes through the filter layer and is discharged from the gas outlet. The ultraviolet sterilization part is arranged in the fixed cover and is positioned between the filter layer and the air inlet, and ultraviolet light generated by the ultraviolet sterilization part can directly irradiate the air inlet surface of the filter layer, so that bacteria intercepted on the filter layer can be sterilized by the ultraviolet light.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments are briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive efforts and also belong to the protection scope of the present application.

FIG. 1 is a schematic structural diagram of an ultraviolet disinfection and sterilization mask provided by an embodiment of the present application;

FIG. 2 is an exploded view of the UV sterilizing mask according to the embodiment of the present disclosure;

FIG. 3 is a schematic view of an ultraviolet disinfection and sterilization mask provided by an embodiment of the present application;

FIG. 4 is a schematic structural view of an ultraviolet sterilizing part according to an embodiment of the present disclosure;

fig. 5 is an explosion structure schematic diagram of the ultraviolet lamp bead provided by the embodiment of the application.

Icon: 110-a mask body; 120-a stationary shield; 130-a filter layer; 140-ultraviolet sterilization part; 111-an arc plate; 112-upper end plate; 113-a lower end plate; 1111-a wearing surface; 114-a respiratory cavity; 121-an air inlet; 122-gas outlet; 150-air outlet cylinder; 1131-air hole; 123-a first cover; 124-a second cover; 1231-a first bottom wall; 1232-a first sidewall; 1233 — first groove; 1241-a second bottom wall; 1242-second side wall; 141-a circuit board; 1411-air holes; 142-an ultraviolet lamp bead; 160-a battery compartment; 1421 — a substrate; 1422-thermally conductive dam; 1423-UV chip; 1424-lens.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

The ultraviolet disinfection and sterilization device that this application embodiment provided can be ultraviolet disinfection and sterilization face guard, air purifier's purification disinfection position etc. can be to air purification's equipment, and this application does not do the injecing, as long as can purify sterile equipment to the air and all be within the protection scope of this application. The following description will take the ultraviolet disinfection and sterilization device as an example of an ultraviolet disinfection and sterilization mask.

Fig. 1 is a schematic structural diagram provided in this embodiment; fig. 2 is an exploded view of the ultraviolet disinfection and sterilization mask provided in this embodiment. Referring to fig. 1 and 2, in the embodiment of the present application, the ultraviolet disinfection mask includes a mask body 110, a fixing cover 120, a filter layer 130, and an ultraviolet sterilization part 140.

The mask body 110 is mainly worn on the head of a user, and when the user wears the upper mask body 110, a surface close to the face of the user is a wearing surface 1111 of the mask body 110 (if not limited to a mask, the device body may have a purifying side). A fixing member (e.g., a fixing string) is provided on the mask body 110 to fix the mask body 110 to the head of the user. The mask body 110 is a transparent mask to avoid affecting the user's sight.

Optionally, the mask body 110 includes an arc plate 111, an upper end plate 112 and a lower end plate 113, one surface of the arc plate 111 is a wearing surface 1111, and the arc plate 111 protrudes toward a surface away from the wearing surface 1111. The upper end plate 112 is fixed on the upper end of the arc plate 111, the lower end plate 113 is fixed on the lower end of the arc plate 111, and the upper end plate 112, the arc plate 111 and the lower end plate 113 enclose a breathing cavity 114 for placing the face of the user (the breathing cavity 114 is located on one side of the wearing face 1111 of the mask body 110).

In the embodiment of the present application, the fixing cover 120 is connected to the mask body 110, the fixing cover 120 has an air inlet 121 and an air outlet 122, and the air outlet 122 is located on the wearing surface 1111 side of the mask body 110 (if not limited to a mask, the air outlet 122 may be located on the purifying side of the device body). Optionally, an air outlet cylinder 150 is disposed on the air outlet 122 of the fixed cover 120, one end of the air outlet cylinder 150 is connected to the air outlet 122, and the other end is connected to the air hole 1131 on the lower end plate 113, so that the air discharged from the air outlet 122 passes through the air outlet cylinder 150 and is discharged from the air hole 1131 into the breathing cavity 114, so that the user can breathe clean air.

Further, the fixed cover 120 has two opposite bottom walls provided with an air inlet 121 and an air outlet 122, respectively. Optionally, the fixing cover 120 includes a first cover 123 and a second cover 124, and the first cover 123 and the second cover 124 are fastened to form the fixing cover 120 with a cavity inside.

Optionally, the first cover 123 and the second cover 124 have the same structure and are symmetrical. The first cover 123 has a first bottom wall 1231 and a first side wall 1232, the first side wall 1232 is disposed on the first bottom wall 1231 and protrudes from the first bottom wall 1231, so that the first bottom wall 1231 and the first bottom wall 1231 enclose to form a first groove 1233; the second cover 124 has a second bottom wall 1241 and a second side wall 1242, the second side wall 1242 is disposed on the second bottom wall 1241 and protrudes from the second bottom wall 1241, so that the second bottom wall 1241 and the second bottom wall 1241 enclose to form a second groove, after the first cover 123 and the second cover 124 are fastened together (after an end of the first side wall 1232 away from the first bottom wall 1231 is connected with an end of the second side wall 1242 away from the second bottom wall 1241), the first groove 1233 and the second groove are combined to form an internal cavity. The air inlet 121 is disposed on the first bottom wall 1231 of the first housing 123, and the air outlet 122 is disposed on the second bottom wall 1241 of the second housing 124.

Fig. 3 is a schematic diagram of the ultraviolet disinfection and sterilization device provided by the embodiment. Referring to fig. 2 and 3, in the embodiment of the present application, the filter layer 130 can trap bacteria. Alternatively, the filter layer 130 may be a filter cotton, a screen, a filter membrane, or the like, but is not limited thereto. So long as the layer structure capable of entrapping bacteria is within the scope of the present application.

Further, the filter layer 130 is disposed in the cavity of the fixed cover 120, so that the gas entering from the gas inlet 121 passes through the filter layer 130 and then exits from the gas outlet 122. Bacteria can be trapped by the filter layer 130, and a large amount of bacteria or viruses are intercepted on the side of the filter layer 130 close to the air inlet 121, so as to prevent the bacteria or viruses from being breathed by the user. Alternatively, the periphery of the filter layer 130 is connected to the fixed mask 120 (the first sidewall 1232 of the first mask 123 or the second sidewall 1242 of the second mask 124), and the filter layer 130 is substantially parallel to the two bottom walls of the fixed mask 120.

The air inlet 121 is located in the middle of the first bottom wall 1231, the air outlet 122 is also located in the middle of the second bottom wall 1241, and the filter layer 130 faces the air inlet 121 and the air outlet 122 of the two bottom walls, so that bacteria in the air are more obstructed in the middle of the filter layer 130. The inventor researches and discovers that after the filter layer 130 is used for a long time, bacteria or viruses infiltrate the filter layer 130, the bacteria or the viruses may permeate the filter layer 130, and the bacteria or the viruses are inhaled into a user when the user breathes air, so that the user has a risk of infection.

Therefore, sterilization of entrapped bacteria is particularly important. The ultraviolet sterilization part 140 provided by the present application can generate ultraviolet light, and after the ultraviolet light irradiates on the filter layer 130, the bacteria intercepted on the filter layer 130 can be killed.

In the embodiment of the present application, the uv-sterilization part 140 is disposed in the fixing cover 120 and located between the filter layer 130 and the air inlet 121, so that the uv light generated by the uv-sterilization part 140 can directly irradiate the air inlet surface of the filter layer 130, and the bacteria trapped on the filter layer 130 can be sterilized by the uv light. In order to kill bacteria intercepted on the filter layer 130, and due to the blocking effect of the filter layer 130, the irradiation time of the bacteria can be prolonged, the bacteria can be effectively killed, and the sterilizing and disinfecting effects are good. After bacteria are trapped on the filter layer 130, the bacteria are killed by ultraviolet light, so that the bacteria are prevented from being accumulated on the filter layer 130, the bacteria are prevented from infiltrating the filter layer 130, the bacteria can be effectively isolated, and the respiratory gas of a user is ensured not to be invaded by bacteria and viruses.

Fig. 4 is a schematic structural diagram of the ultraviolet sterilization part 140 according to this embodiment. Referring to fig. 3 and 4, the uv sterilization part 140 includes a plurality of uv point light sources, an airflow channel is formed between the uv point light sources for air to pass through, and uv light generated by the uv point light sources can directly irradiate the air inlet surface of the filter layer 130. The ultraviolet point light sources can uniformly emit light to generate uniformly dispersed ultraviolet light, and can better sterilize the air inlet surface of the filter layer 130.

Further, ultraviolet sterilization portion 140 includes circuit board 141 and a plurality of ultraviolet lamp pearl 142, and circuit board 141 sets up in fixed cover 120 and is located between filter layer 130 and the air inlet 121, and a plurality of ultraviolet lamp pearl 142 set up in one side of circuit board 141 near filter layer 130 to with circuit board 141 electric connection, make the ultraviolet light that a plurality of ultraviolet lamp pearl 142 sent all directly shine in the air inlet face of filter layer 130. The ultraviolet light emitted by the ultraviolet sterilization part 140 can be more uniform, and can be more uniformly irradiated onto the filter layer 130 to completely cover the filter layer 130, so that the sterilization effect is better. Further, the wiring board 141 is substantially parallel to the filter layer 130, and the distance between the wiring board 141 and the filter layer 130 is 2 to 20 cm. Ultraviolet light that can make ultraviolet lamp pearl 142 on the circuit board 141 send can evenly shine to filter layer 130 on, and when ultraviolet light shined to filter layer 130 on, the intensity of ultraviolet light was higher, can increase the efficiency of disinfecting. If the distance between the two is too large, the optical density is insufficient, and the sterilization time is long; if the distance between the lamp bead and the lamp bead is too small, a dark zone is formed between the lamp bead and the lamp bead, and an irradiation blind zone can be generated. In some possible embodiments, the distance between the wiring board 141 and the filter layer 130 is 2cm, 5cm, 10cm, or 20 cm.

Further, the periphery of the circuit board 141 is connected with the fixing cover 120, a plurality of air holes 1411 are formed in the position, close to the air inlet 121, of the circuit board 141, so that an air flow channel is formed between the plurality of ultraviolet lamp beads 142, and the plurality of ultraviolet lamp beads 142 are arranged in the area, close to the air holes 1411, of the circuit board 141. After air entering from the air inlet 121 passes through the air holes 1411, the air contacts the filter layer 130, bacteria are blocked on the filter layer 130 through the filtering of the filter layer 130, the filter layer 130 can block more bacteria just facing the area of the air holes 1411, the ultraviolet lamp beads 142 are arranged around the air holes 1411, ultraviolet light generated by the ultraviolet lamp beads 142 can directly irradiate the bacteria on the filter layer 130 at a short distance, and the sterilization and disinfection effects are better.

Optionally, the vent 1411 is disposed in the middle of the circuit board 141 and at a position close to the middle, the plurality of ultraviolet lamp beads 142 are also disposed in the middle of the circuit board 141 and at a position close to the middle, and the ultraviolet lamp beads 142 are located in an area beside the vent 1411. Because the position relation of air inlet 121, gas outlet 122 and filter layer 130 (air inlet 121 and gas outlet 122 are just to the middle part of filter layer 130), more bacterial virus can be held back in the middle part of filter layer 130, and ultraviolet lamp pearl 142 sets up in above-mentioned position, can make the ultraviolet ray that ultraviolet lamp pearl 142 produced have better bactericidal effect to filter layer 130. With continued reference to fig. 2, in order to provide power to the circuit board 141, the ultraviolet disinfection and sterilization device further includes a battery compartment 160, the battery compartment 160 is disposed on the second cover 124 of the fixing cover 120, and after a battery is placed in the battery compartment 160, power can be provided to the circuit board 141.

Fig. 5 is an explosion structure schematic diagram of the ultraviolet lamp bead 142 provided in this embodiment. Referring to fig. 4 and 5, in the embodiment of the present application, the ultraviolet lamp bead 142 includes a substrate 1421, an annular heat-conducting dam 1422, an ultraviolet chip 1423, and a lens 1424. The substrate 1421 is fixed to the circuit board 141; the thermal conductive dam 1422 is disposed on a side of the substrate 1421 away from the circuit board 141 and protrudes from the surface of the substrate 1421, so that a groove is formed between the thermal conductive dam 1422 and the substrate 1421. The ultraviolet chip 1423 is disposed on the substrate 1421 and located in the groove, and the ultraviolet chip 1423 is electrically connected to the circuit board 141. The lens 1424 covers the uv chip 1423, and an annular solderable layer is disposed on an edge of the lens 1424, where the solderable layer is soldered to a side of the thermal conductive dam 1422 away from the substrate 1421.

In this application, through the setting of heat conduction box dam 1422, not only can form the space that has installation ultraviolet chip 1423, can also dispel the heat through heat conduction box dam 1422, and can realize the welding with the weldable layer on the edge of lens 1424, can realize the welding of lens 1424, need not use organic glue to bind just can realize the encapsulation of lens 1424, the yellowing or the cracking scheduling problem of organic bonding glue has been avoided, the encapsulation inefficacy problem of production because of the use of organic glue has been improved. And, because the setting of heat conduction box dam, can make the luminous angle of ultraviolet lamp pearl reduce, reach better bactericidal effect.

Optionally, the thickness of the ultraviolet chip 1423 is smaller than that of the heat-conducting dam 1422, so that the maximum light-emitting angle of the ultraviolet lamp bead is 120 ℃, the light-emitting angle of the ultraviolet lamp bead is smaller, the illuminance per unit area is good, and the sterilization effect is better.

Optionally, the heat conducting dam 1422 is a metal heat conducting dam (for example, the material of the metal heat conducting dam is copper or aluminum), which not only facilitates welding the solderable layer to the heat conducting dam 1422, but also improves the heat dissipation effect of the heat conducting dam 1422.

Optionally, the solderable layer includes one of a gold solderable layer, a silver solderable layer, a tin solderable layer, and an alloy solderable layer thereof. For example: the solderable layer may be a gold solderable layer; the solderable layer may be a silver solderable layer; the solderable layer may be a tin solderable layer; the weldable layer can be a gold-silver alloy weldable layer; the weldable layer can be a gold-tin alloy weldable layer; the solderable layer may be a silver-tin alloy solderable layer. By selecting the solderable layer, the lens 1424 and the thermal conductive dam 1422 can be more easily soldered by eutectic soldering, so as to achieve a non-adhesive connection.

Furthermore, the weldable layer is of a circular ring structure, the width of the weldable layer is 1.5-2.5mm, and the thickness of the weldable layer is 0.15-0.25 mm. The lens 1424 can be firmly welded while effectively preventing the conductive layer from being conducted with the ultraviolet chip 1423. In some possible embodiments, the width of the solderable layer is 1.5mm, 2mm or 2.5mm and the thickness of the solderable layer is 0.15mm, 0.2mm or 0.25 mm.

Further, the lens 1424 is a glass lens or a ceramic lens. The glass lens made of glass or the ceramic lens made of ceramic replaces the traditional organic glue lens, organic glue is not needed, ultraviolet light emitted by the ultraviolet chip 1423 can be prevented from being absorbed by the organic glue of the organic glue lens, the problem that the light-emitting rate of the ultraviolet lamp bead 142 is low after the ultraviolet lamp bead is used for a long time can be prevented from being improved, and the sterilization time of the ultraviolet lamp bead 142 can be prolonged, so that the ultraviolet lamp bead 142 can be sterilized for a long time.

In the embodiment of the present application, the substrate 1421 is an aluminum nitride substrate or an aluminum oxide substrate, which not only can support but also can insulate and conduct heat. Because the substrate 1421 is insulated, a circuit layer is arranged on the substrate 1421, the ultraviolet chip 1423 is welded on the circuit layer, a first through hole and a second through hole are arranged on the substrate 1421, a first pole column is arranged in the first through hole, a second pole column is arranged in the second through hole, one end of the first pole column is connected with the circuit layer, and when the substrate 1421 is welded on the circuit board 141, one end of the first pole column, which is far away from the circuit layer, is connected with the circuit board 141; one end of the second electrode is connected to the circuit layer, and when the substrate 1421 is soldered to the circuit board 141, the end of the second electrode away from the circuit layer is connected to the circuit board 141, so that the ultraviolet chip 1423 is electrically connected to the circuit board 141.

The preparation method of the ultraviolet lamp bead 142 comprises the following steps: an annular solderable layer (solderable plating) is formed on the edge of the lens 1424. A first through hole and a second through hole penetrating through two surfaces of the substrate 1421 are formed in the substrate 1421, a first pole is disposed in the first through hole, a second pole is disposed in the second through hole, a circuit layer is disposed on the substrate 1421, the circuit layer is connected to one end of the first pole, and one end of the second pole is connected to the other end of the first pole.

An annular thermal conductive dam 1422 is disposed on the substrate 1421, such that the thermal conductive dam 1422 protrudes from the surface of the substrate 1421, and a groove is formed between the thermal conductive dam 1422 and the substrate 1421. The uv chip 1423 is placed in the recess and eutectic bonded with the wiring layer. The lens 1424 covers the ultraviolet chip 1423, and the solderable layer is eutectic-welded with the side of the heat-conducting dam 1422 away from the substrate 1421 to obtain the ultraviolet lamp bead 142.

Then, the ultraviolet sterilization part 140 is prepared by providing the air holes 1411 on the circuit board 141, and then welding the plurality of ultraviolet beads 142 on the circuit board 141 (the ultraviolet beads 142 are located near the air holes 1411), so that the circuit board 141 is electrically connected to the ultraviolet chip 1423 (one end of the first pole far away from the circuit layer is connected to the circuit board 141, and one end of the second pole far away from the circuit layer is connected to the circuit board 141), and the ultraviolet sterilization part 140 is obtained.

The ultraviolet disinfection and sterilization mask is prepared by fixing the filter layer 130 and the ultraviolet sterilization part 140 in the fixed cover 120, so that the ultraviolet sterilization part 140 is positioned between the filter layer 130 and the air inlet 121 of the fixed cover 120. The fixed cover 120 is connected with the mask body 110 so that the air outlet 122 of the fixed cover 120 is positioned on one side of the wearing surface 1111 of the mask body 110 (one end of the air outlet tube 150 is connected with the air outlet 122 of the fixed cover 120, and the other end is connected with the through hole of the lower end plate 113 of the mask body 110, thereby realizing the connection of the fixed cover 120 and the mask body 110), and obtaining the ultraviolet disinfection mask.

The ultraviolet disinfection sterilization mask prepared by the preparation method is subjected to sterilization detection to obtain the following detection data as shown in table 1:

TABLE 1 detection data of ultraviolet sterilizing mask

As can be seen from Table 1, the ultraviolet disinfection and sterilization mask provided by the application has good disinfection and sterilization effects.

The application provides an ultraviolet disinfection face guard's beneficial effect includes:

(1) the bacterium virus separation in the air through filter layer 130 earlier, then through ultraviolet ray direct irradiation filter layer 130 that ultraviolet lamp pearl 142 produced (also on the bacterium virus of separation on filter layer 130 directly shines), can shine the bacterium virus on filter layer 130 for a longer time, kills the bacterium virus, prevents effectively that filter layer 130 from infiltrating back bacterium virus by inspiratory risk, has strengthened the protective effect of face guard. Can be used for strengthening the protection of bacteria and viruses; particularly, the protective mask can be applied to areas such as a heating outpatient service, an isolation observation ward (room), an isolation ward (room) and an isolation intensive care ward (room) and is used during the operation of collecting respiratory tract specimens, trachea cannula, tracheotomy, noninvasive ventilation, sputum suction and the like which can generate aerosol, so that the infection risk is greatly reduced, and the prospect is wide.

(2) The light source of ultraviolet lamp bead 142 is more stable, and light intensity to and illumination are more even, can make the ultraviolet ray of production cover filter layer 130 comprehensively, and the sterile effect of disinfecting is better.

The above description is only a few examples of the present application and is not intended to limit the present application, and various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.