CN211584962U - Head-mounted air purifier - Google Patents

Head-mounted air purifier Download PDF

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Publication number
CN211584962U
CN211584962U CN201922030577.8U CN201922030577U CN211584962U CN 211584962 U CN211584962 U CN 211584962U CN 201922030577 U CN201922030577 U CN 201922030577U CN 211584962 U CN211584962 U CN 211584962U
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air
air guide
head
fixed
casing
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CN201922030577.8U
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Chinese (zh)
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孙军
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Dalian 3dew Digital Technology Co ltd
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Dalian 3dew Digital Technology Co ltd
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Abstract

The utility model discloses a head-mounted air purifier, including air guide device, head card, face guard and preforming, the air guide device includes air guide casing, intake duct, filter disc, fan and ventiduct, and the air feed end of air guide casing is equipped with fixed arch, be equipped with on the face guard with fixed protruding complex fixed through hole, the face guard is solid in fixed arch through fixed through hole cover on, be equipped with air supply port and gas vent on the fixed arch, the air supply port with the intake duct links to each other, is equipped with the wind blocking piece on the air supply port, the gas vent with the ventiduct links to each other, and ventiduct department is equipped with the check valve, and in filter disc, battery and the fan located the air guide casing, the air feed end of air guide casing links to each other with the head card links to each other, air guide device, face guard. The utility model discloses can not only realize the air to purifying, provide scientific and reasonable's shape, healthy safe wearing mode and more abundant expansion function moreover.

Description

Head-mounted air purifier
Technical Field
The utility model relates to a healthy protector of air-purifying, concretely relates to wear air purifier.
Background
At present, the current wearable air purifier consists of a shell, a filter disc, a fan, a control module (the above-mentioned constituting host), a mask and a wearing or wearing rope, and is mainly divided into two forms: firstly, the main machine and the face mask are combined into a whole and fixed on the head, neck or ears by a rope or a belt in a mode similar to a traditional mask; and secondly, the main machine is separated from the face mask, the face mask is worn in the first mode, and the main machine is worn on the waist, the arms, the neck and other parts and is connected with the face mask through a long hose. However, there are a number of negative effects in both forms: in the first form, the pressure and the pull-down force of the mouth and the nose are large due to over-concentrated weight, which affects the health and is uncomfortable, and the pressure of the fixing rope or the fixing belt on the head, the neck or the ears is large, which jeopardizes the blood circulation and the nervous system (the facial paralysis case occurs), and in addition, the sound is difficult to produce when the fixing rope or the fixing belt is worn, which affects the communication; the second form, in addition to the problems of the first form, is more inconvenient to wear and is prone to safety accidents due to the long length of the conduit and the connection of the mask.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the proposition of above problem, and study design wear air purifier overcomes uncomfortable sense and harm and the risk to health that traditional wearable air purifier wore. The utility model discloses a technical means as follows:
the utility model provides a head-mounted air purifier, includes air guide device, head card, face guard and preforming, the air guide device includes air guide casing, intake duct, filter element, fan and ventiduct, the air feed end of air guide casing is equipped with fixed arch, be equipped with on the face guard with fixed protruding complex fixed through hole, the face guard is solid in fixed arch through fixed through hole cover, be equipped with air supply port and gas vent on the fixed arch, the air supply port with the intake duct links to each other, be equipped with the wind blocking piece on the air supply port, the gas vent with the ventiduct links to each other, ventiduct department is equipped with the check valve, filter element and fan are located in the intake duct, the air feed end of air guide casing with the preforming links to each other, the air guide casing with the head card links to each other, air guide device, face guard and preforming connect into C shape structure.
Preferably, the air inlet end of the air guide shell is an inclined plane facing outwards, a T-shaped guard is arranged on the outer side of the air inlet end of the air guide shell, the top surface of the guard is trapezoidal, and the two side surfaces of the guard are triangular.
Preferably, the head clamp comprises an elastic sheet, a fixing strip and a rubber cap, the fixing strip is connected with the air guide shell, one end of the elastic sheet is in telescopic connection with the fixing strip, the other end of the elastic sheet is connected with the rubber cap, and the fixing strip is clamped on the air guide shell through a groove.
Preferably, one side of the groove close to the elastic sheet is provided with a first head clamping protrusion, and one side of the groove far away from the elastic sheet is provided with a second head clamping protrusion.
Preferably, a clamping piece is arranged at one end, far away from the elastic piece, of the fixing strip, the first head clamp bulge is of a shuttle-shaped structure, and the second head clamp bulge is of a spherical structure.
Preferably, the outer wall of the air guide shell, which is close to the air inlet end, is provided with a sliding groove, the sliding groove comprises a first sliding groove and a second sliding groove, the first head clamp protrusion is connected with the first sliding groove in a matched mode and can slide in the first sliding groove, and the second head clamp protrusion is connected with the second sliding groove in a matched mode and can slide in the second sliding groove.
Preferably, the cross-sectional area of air guide casing and intake duct all increases gradually by giving vent to anger end to inlet end, fan and filter disc are followed the end of giving vent to anger of intake duct is arranged in proper order to the inlet end.
Preferably, the pressing sheet is provided with a strip-shaped through hole, a protection pad and a clamping column, the protection pad is arranged on one stressed side of the pressing sheet, the clamping column penetrates through the strip-shaped through hole, and the protection pad is connected with the pressing sheet through the clamping column.
Preferably, the mask is provided with a rectangular through hole matched with the rectangular fixing bulge, the one-way valve is a reverse blocking sheet, the fan is a prefabricated micro fan, the inner side of one end of the air guide shell, which is close to the air inlet end, is provided with an expanding module, and the expanding module comprises one or more than two of an anion generator, a flavoring agent carrier and a heater.
A head-wearing air purifier comprises an air guide device, a head clip, a face mask and a host box, wherein the air guide device comprises an air guide shell, an air inlet channel and an air outlet channel, the air guide shell comprises a shell front section and a shell rear section, a rotating shaft is arranged between the shell front section and the shell rear section, the head clamp is rotationally connected with the rotating shaft, the air supply end of the air guide shell is provided with a fixed bulge, the face mask is provided with a fixing through hole matched with the fixing bulge, the face mask is sleeved and fixed on the fixing bulge through the fixing through hole, the fixed bulge is provided with an air supply port and an air exhaust port, the air supply port is connected with the air inlet channel, the air outlet is connected with the air outlet channel, the air inlet end of the air guide shell is connected with the main machine box, the filter disc and the fan are arranged in the main machine box, and the air guide device, the face mask and the main machine box are connected into a C-shaped structure.
Compared with the prior art, a wear-type air purifier, can not only realize providing scientific and reasonable's shape, healthy safe wearing mode and bigger expansion space moreover to the air to purifying.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;
fig. 2 is a schematic front view of embodiment 1 of the present invention;
fig. 3 is a left side view structure diagram of embodiment 1 of the present invention;
fig. 4 is a schematic right-view structural diagram of embodiment 1 of the present invention;
fig. 5 is a rear view structure diagram of embodiment 1 of the present invention;
fig. 6 is a schematic top view of embodiment 1 of the present invention;
fig. 7 is an enlarged schematic structural view of the mask and the air supply and exhaust ports according to embodiment 1 of the present invention;
fig. 8 is a schematic structural view of a head card according to embodiment 1 of the present invention;
fig. 9 is a schematic side view of a head card according to embodiment 1 of the present invention;
fig. 10 is a schematic structural view of a fixing strip according to embodiment 1 of the present invention;
fig. 11 is an enlarged schematic structural view of a groove of embodiment 1 of the present invention;
FIG. 12 is a schematic view showing the structure of the gas guide according to embodiment 1 of the present invention;
FIG. 13 is a schematic cross-sectional view of an air guide according to embodiment 1 of the present invention;
FIG. 14 is a schematic top view of the gas guide of embodiment 1 of the present invention;
fig. 15 is a schematic bottom view of an air guide according to embodiment 1 of the present invention;
fig. 16 is a schematic view of the overall structure of embodiment 2 of the present invention;
fig. 17 is a schematic top view of embodiment 2 of the present invention;
fig. 18 is a schematic structural view at the rotation axis of embodiment 2 of the present invention;
fig. 19 is a schematic sectional view of the main chassis according to embodiment 2 of the present invention;
fig. 20 is a schematic structural view in a folded state according to embodiment 2 of the present invention;
in the figure, 1, an air guide device; 2. a head card; 3. a face mask; 4. tabletting; 5. a main chassis; 11. an air guide shell; 12. an air inlet channel; 13. a filter disc; 14. a fan; 15. an air outlet channel; 16. a one-way valve; 17. a housing front section; 18. a rear section of the housing; 19. a rotating shaft; 21. a spring plate; 22. a fixing strip; 23. a rubber cap; 31. a rectangular through hole; 41. a strip-shaped through hole; 42. a pad; 43. clamping the column; 51. a battery; 52. a function key; 111. a fixed protrusion; 112. an air supply port; 113. an exhaust port; 114. a wind-shielding sheet; 115. a sliding groove; 116. protecting the gear; 117. an expansion module; 118. a switch; 221. a groove; 222. a first head card projection; 223. a second head clamp projection; 224. a clip; 225. a tooth socket; 1151. a first sliding groove; 1152. a second sliding groove.
Detailed Description
Example 1:
as shown in fig. 1 to 15, a head-mounted air purifier comprises an air guide device 1, a head clip 2, a face mask 3 and a pressing sheet 4, wherein the air guide device 1 comprises an air guide shell 11, an air inlet channel 12, a filter sheet 13, a fan 14 and an air outlet channel 15, a rectangular fixing protrusion 111 is arranged at the air supply end of the air guide shell 11, a rectangular through hole 31 matched with the rectangular fixing protrusion 111 is arranged on the face mask 3, and the air guide shell 11 is connected with the rectangular through hole 31 through the fixing protrusion 111; the fixing protrusion 111 is provided with an air supply port 112 and an air discharge port 113, the air supply port 112 is connected to the air intake duct 12, and the air supply port 112 is provided with a wind blocking sheet 114, and the wind blocking sheet 114 prevents the air flow entering the mask 3 from directly impacting the face. The air outlet 113 is directly communicated with the inside of the face mask 3, and the air outlet channel 15 is a sound transmission channel at the same time, so that the communication requirement and the communication requirement can be met, and particularly, the privacy of the communication can be improved; the exhaust port 113 is connected with the exhaust channel 15, a one-way valve 16 is arranged in the exhaust channel 15, and the one-way valve 16 is a check sheet to ensure that the air is exhausted from the exhaust channel 15 in a single direction. The filter disc 13 and the fan 14 are arranged in the air inlet channel 12, the air inlet end of the air guide shell 11 is connected with the pressing sheet 4, and the air guide shell 11 is connected with the head clamp 2. The air guide device 1 further comprises a battery and control module for power supply and control of the fan 14.
The head card 2, the face mask 3 and the pressing sheet 4 form a C-shaped structure: the front part takes the slight pressure and friction of the face mask on the face as a first stress point, the back part corresponding to the front stress point takes a high-friction protection pad as a contact surface as a second stress point, the two-point pressure is adjusted through the pressing sheet 4, the side surface is provided with a head clamp in the direction vertical to the first and the second stress directions on the ear part, the head clamp is taken as a third stress point, a three-point stress structure is formed, and the head clamp can slide in order to adapt to the head diameter; thus, 60-80 g (different styles and additional functions) of products are attached to the face, the stress is applied to three points in three directions, the stress of each point is weak, and the balance weight is uniform.
The air inlet end of the air guide shell 11 is an inclined plane, so that the volume of the air guide shell 11 is reduced, the load bearing burden is reduced, the air circulation area is increased, and sufficient air inlet volume is ensured; the air inlet end of the air guide shell 11 is provided with a T-shaped protective baffle 116 connected with the air inlet channel 12, the top surface of the protective baffle 116 is trapezoidal, the two side surfaces of the protective baffle 116 are triangular, and the protective baffle 116 can protect the filter disc 13 and the fan 14 in the air inlet channel 12 on the premise of not reducing the air circulation area in the air guide shell 11, so that people around a user can not directly see the filter disc in the air inlet channel 12 on the outer side, and the attractiveness of the air guide shell is improved.
The head clamp 2 comprises an elastic sheet 21, a fixing strip 22 and a rubber cap 23, the fixing strip 22 is in telescopic connection with the elastic sheet 21, a tooth groove 225 is formed in the fixing strip 22, one end of the elastic sheet 21 is matched with the tooth groove 225, the elastic sheet 21 can be adjusted in the fixing strip 22 in a telescopic mode, and the head clamp 2 can be adjusted vertically according to different head sizes of wearers; the end of the elastic sheet 21 far away from the fixing strip 22 is connected with a rubber cap 23, and the rubber cap 23 can prevent slipping and increase comfort.
The fixing strip 22 is provided with a groove 221 matched with the air guide shell 11, the groove 221 is detachably connected with the air guide shell 11, when the head card is worn, the fixing strip 22 is perpendicular to the air guide shell 11, and the head card 2 is vertically fixed on the head of a wearer. One side of the groove 221 close to the elastic sheet 21 is provided with a first head clamping bulge 222 in a shuttle-shaped structure, and one side of the groove 221 far away from the elastic sheet 21 is provided with a second head clamping bulge 223 in a spherical structure.
The outer wall of the air guide shell 11 near the middle rear part is provided with a sliding groove 115, the sliding groove 115 comprises a first sliding groove 1151 and a second sliding groove 1152, the first sliding groove 1151 and the second sliding groove 1152 are both arranged along the airflow direction in the air guide shell 11, and the first head clamp protrusion 222 is connected with the first sliding groove 1151 in a matched manner and can slide in the first sliding groove 1151; the second head engaging protrusion 223 is coupled to the second sliding groove 1152 and is slidable in the second sliding groove 1152. The sliding groove 115, the head card projection 222 and the groove 221 are matched to realize the back and forth sliding of the head card 2 along the air flow moving direction in the air guide housing 11 (i.e. the front and back direction of the wearer), so that the size can be adjusted to adapt to different wearers. When the head card is worn, the head card can be fixed at the head, and then the air guide shell 11 is pressed into the groove 221 at a proper angle, so that the first head card bulge 222 is clamped into the first sliding groove 1151, and the second head card bulge 223 enters the second sliding groove 1152, and the head card can be fixed.
The shuttle-shaped structure of the first head card projection 222 enables the head card 2 not only to slide in the first sliding groove 1151, but also to swing laterally by a certain angle to adapt to different wearers; the second head engaging protrusion 223 is designed as a spherical structure, and is slidably connected to the second sliding groove 1152, so as to ensure that the groove 221 can slide up and down stably.
The fixing strip 22 is provided with a clip 224 at an end away from the elastic sheet 21, and when the head card 2 needs to be disassembled, the clip 224 is broken to deform the groove 221 to a certain extent, so as to remove the head card 2.
The cross-sectional areas of the air guide shell 11 and the air inlet duct 12 are gradually increased from the air supply end to the air inlet end, the fan 14 is a micro fan, the micro fan is a finished prefabricated micro fan assembly, and specifically, 30, 40 or 50 series micro fans produced by companies such as siemens, delaware, mitsubishi or tai electric and the like can be adopted, and specific structures are not described herein again. The fan 14 and the filter 13 are arranged in sequence from the air supply end to the air intake end of the air intake duct 12. The housing of this embodiment is provided with a switch 118 for turning on the blower 14.
The filter 13 is arranged in the inlet duct 12 near the inlet end, and the filter is a finished filter assembly, which may be any type of HEPA filter such as H12/H13/H14 produced by nanjing hong wei, shenzhen henfeng, shenzhen zhong or 3M corporation, and the specific structure is not described herein. The filter disc 13 is preferably removably replaceable, in particular at the port of the inlet end.
Preforming 4 and air guide casing 11's air inlet end fixed connection, be equipped with bar through-hole 41 on preforming 4, protection pad 42 and card post 43, one side of preforming 4 atress is located to protection pad 42, the one end of card post 43 links to each other with protection pad 42, the other end passes bar through-hole 41 and fixes protection pad 42 on preforming 4, and make card post 43 itself and protection pad 42 slide in bar through-hole 41 together, can realize to the wearer's head variation in size, suit with preforming 4 deformation, make this stress point correspond with the stress point of anterior face guard all the time.
When the air guide shell is worn, the air guide shell 11 is positioned at a connecting line position from the mouth and the nose to the back of the head and neck through the ears, an expansion module 117 is arranged on the inner side of the part, close to the air inlet end, of the inner side of the air guide shell 11, the expansion module 117 can have functions of communication entertainment, anion generation, fragrance, heating and the like, and the expansion module 117 is also a battery and a control system.
The utility model discloses the product shape is the C shape of keeping flat to laminating side portion is less than 30 degrees with each contained angle on horizon under the people's upright state when wearing, and the fuselage cross section is nearly circular, nearly square and other shapes, and narrow back is wide before the fuselage, and the air inlet is at the fuselage rear, supplies, the gas vent in the front face guard. The front end is a soft face mask, the expansion module, a battery and control system, a micro fan and a filter disc are arranged from the rear part to the tail end, the air supply and exhaust ports on the air guide shell 11 are connected with the face mask 3, and the exhaust ports are simultaneously used as sound conduction channels. The utility model has the advantages that: the three-point stress fixation is adopted, the wearing is comfortable and healthy, and the three-point stress fixation does not conflict with glasses, hats, scarves and communication entertainment equipment; can realize high-standard purification of air, and provides safe, comfortable and healthy wearing modes and feelings and more expansion functions. Simple structure, easy to realize and use.
Example 2:
as shown in fig. 16-20, a head-mounted air purifier comprises an air guide device, a head clip 2, a face mask 3 and a host box 5, wherein the air guide device comprises an air guide shell, an air inlet channel and an air outlet channel, the air guide shell comprises a shell front section 17 and a shell rear section 18, a rotating shaft 19 is arranged between the shell front section 17 and the shell rear section 18, the internal spaces of the shell front section 17 and the shell rear section 18 are communicated, and the shell front section 17 and the shell rear section 18 can be rotated and folded through the rotating shaft 19, so that the space is saved and the head-mounted air purifier is convenient to; the head card 2 is rotatably connected to the rotation shaft 19, and space can be saved by rotating the head card 2 about the rotation shaft 19.
An expansion module is provided within the housing rear section 18 and may include communication entertainment, anion generation, fragrance, heating, and the like. The air inlet end of the shell rear section 18 is connected with the main case 5, the main case 5 provides a stress effect, meanwhile, a fan 14 and a filter disc 13 are arranged in the main case 5, the fan 14 is arranged on the air outlet side of the filter disc 13, air can be sucked into the main case 5 through the fan 14 and is filtered by the filter disc 13 and then sent into the face mask 3, a battery 51 and a control system are further arranged in the main case 5, and a function key 52 is arranged on the main case 5 and can be used for adjusting working parameters of the fan.
The air supply end of the front section 17 of the shell is provided with a fixing bulge 111, the face mask 3 is provided with a fixing through hole matched with the fixing bulge 111, the face mask 3 is fixedly sleeved on the fixing bulge 111 through the fixing through hole, and the fixing bulge 111 is provided with an air supply port and an air exhaust port.
The air inlet channel and the air outlet channel are arranged in the air guide shell and are not communicated with each other, the air outlet end of the air inlet channel is connected with the air supply port, and the air inlet end of the air inlet channel is connected with the host box; one end of the air outlet channel is communicated with the air outlet, and the other end of the air outlet channel is communicated with the external space. When the device is used, the fan 14 in the main case 5 at the rear part of the air guide shell works to suck air, the air is sent into the mask through the air inlet channel, and the air is sent out from the front end of the air guide shell through the air outlet channel after being breathed and ventilated by a user.
The product in the embodiment can fold and store the front section and the rear section of the air guide shell and the head card, and is convenient to carry; the air guide device, the face mask and the host box are connected into a C-shaped structure, three points are stressed in three directions, all points are stressed weakly, and the balance weight is uniform.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims (10)

1. A head-mounted air purifier, characterized in that: including air guide device, head card, face guard and preforming, the air guide device includes air guide casing, intake duct, filter disc, fan and ventiduct, the air feed end of air guide casing is equipped with fixed arch, be equipped with on the face guard with fixed protruding complex fixed through-hole, the face guard is fixed on fixed arch through fixed through-hole cover, be equipped with air supply port and gas vent on the fixed arch, the air supply port with the intake duct links to each other, be equipped with the wind-break piece on the air supply port, the gas vent with the ventiduct links to each other, ventiduct department is equipped with the check valve, filter disc and fan are located in the intake duct, the air feed end of air guide casing with the preforming links to each other, the air guide casing with the head card links to each other, air guide device, face guard and preforming connect into C shape structure.
2. A head-mounted air purifier as defined in claim 1, wherein: the air guide device is characterized in that the air inlet end of the air guide shell is an inclined plane facing outwards, a T-shaped guard is arranged on the outer side of the air inlet end of the air guide shell, the top surface of the guard is trapezoidal, and the two side surfaces of the guard are triangular.
3. A head-mounted air purifier as defined in claim 1, wherein: the head clamp comprises an elastic sheet, a fixing strip and a rubber cap, the fixing strip is connected with the air guide shell, one end of the elastic sheet is in telescopic connection with the fixing strip, the other end of the elastic sheet is connected with the rubber cap, and the fixing strip is connected to the air guide shell in a clamping mode through a groove.
4. A head-mounted air purifier as defined in claim 3, wherein: one side of the groove close to the elastic sheet is provided with a first head clamp protrusion, and one side of the groove far away from the elastic sheet is provided with a second head clamp protrusion.
5. A head-mounted air purifier as defined in claim 4, wherein: the fixing strip is provided with a clamping piece at one end far away from the elastic piece, the first head clamp bulge is of a shuttle-shaped structure, and the second head clamp bulge is of a spherical structure.
6. A head-mounted air purifier as defined in claim 4, wherein: the air guide casing is equipped with the sliding tray on being close to the outer wall of inlet end, the sliding tray includes first sliding tray and second sliding tray, first head card protruding with first sliding tray cooperation is connected, and can slide in the first sliding tray, second head card protruding with the second sliding tray cooperation is connected, and can slide in the second sliding tray.
7. A head-mounted air purifier as defined in claim 1, wherein: the cross-sectional area of air guide casing and intake duct is all crescent by giving vent to anger end to inlet end, fan and filter disc are followed the end of giving vent to anger of intake duct is arranged in proper order to the inlet end.
8. A head-mounted air purifier as defined in claim 1, wherein: the protective pad is arranged on one side of the pressed sheet, which is stressed, the clamping column penetrates through the strip-shaped through hole, and the protective pad is connected with the pressed sheet through the clamping column.
9. A head-mounted air purifier as defined in claim 1, wherein: the fixed protrusion is rectangular, the face mask is provided with a rectangular through hole matched with the fixed protrusion, the one-way valve is a reverse blocking sheet, the fan is a prefabricated micro fan, the inner side of one end, close to the air inlet end, of the air guide shell is provided with an expansion module, and the expansion module comprises one or more than two of an anion generator, a flavoring agent carrier and a heater.
10. A head-mounted air purifier, characterized in that: including air guide device, head card, face guard and host computer box, the air guide device includes air guide casing, intake duct and ventiduct, the air guide casing includes casing anterior segment and casing back end, be equipped with the rotation axis between casing anterior segment and the casing back end, the head card with rotation axis swivelling joint, the air feed end of air guide casing is equipped with fixed arch, be equipped with on the face guard with fixed arch complex fixed through hole, the face guard is solid in fixed arch on through fixed through hole cover, be equipped with air supply port and gas vent in the fixed arch, the air supply port with the intake duct links to each other, the gas vent with the ventiduct links to each other, the air inlet end of air guide casing with the host computer box links to each other, be equipped with filter element and fan in the host computer box, air guide device, face guard and host computer box connect into C shape structure.
CN201922030577.8U 2019-11-21 2019-11-21 Head-mounted air purifier Active CN211584962U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922030577.8U CN211584962U (en) 2019-11-21 2019-11-21 Head-mounted air purifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922030577.8U CN211584962U (en) 2019-11-21 2019-11-21 Head-mounted air purifier

Publications (1)

Publication Number Publication Date
CN211584962U true CN211584962U (en) 2020-09-29

Family

ID=72588709

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201922030577.8U Active CN211584962U (en) 2019-11-21 2019-11-21 Head-mounted air purifier

Country Status (1)

Country Link
CN (1) CN211584962U (en)

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