CN223402727U - Heat radiation structure and advertisement machine - Google Patents
Heat radiation structure and advertisement machineInfo
- Publication number
- CN223402727U CN223402727U CN202422641392.1U CN202422641392U CN223402727U CN 223402727 U CN223402727 U CN 223402727U CN 202422641392 U CN202422641392 U CN 202422641392U CN 223402727 U CN223402727 U CN 223402727U
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Abstract
本实用新型公布了一种散热结构及广告机，包括波浪板、密封连接板、第一散热风扇；所述波浪板、密封连接板设于电器装置的壳体内腔；密封连接板数量为两个，分别与所述波浪板两端连接，三者连接为分隔板；分隔板外边缘与电器装置的壳体内腔侧壁连接，将电器装置壳体内腔的电子元器件与外界分隔；所述第一散热风扇用于驱动空气于所述分隔板表面流动。分隔板外边缘与电器装置的壳体内腔侧壁连接，将电器装置的壳体内腔分隔为互不连通的第一腔室、第二腔室；电器装置的电子元器件位于所述第一腔室；第二腔室由所述分隔板、电器装置的壳体部分侧壁以及电器装置的后盖板围合形成；电器装置的后盖板设有通风口；第一散热风扇位于所述第二腔室。
The utility model discloses a heat dissipation structure and an advertising machine, comprising a wave plate, a sealing connection plate, and a first heat dissipation fan; the wave plate and the sealing connection plate are arranged in the inner cavity of the housing of an electrical device; there are two sealing connection plates, which are respectively connected to the two ends of the wave plate, and the three are connected to form a partition plate; the outer edge of the partition plate is connected to the side wall of the inner cavity of the housing of the electrical device, separating the electronic components in the inner cavity of the housing of the electrical device from the outside world; the first heat dissipation fan is used to drive air to flow on the surface of the partition plate. The outer edge of the partition plate is connected to the side wall of the inner cavity of the housing of the electrical device, dividing the inner cavity of the housing of the electrical device into a first chamber and a second chamber that are not connected to each other; the electronic components of the electrical device are located in the first chamber; the second chamber is formed by the partition plate, the side wall of the housing of the electrical device, and the rear cover of the electrical device; the rear cover of the electrical device is provided with a vent; the first heat dissipation fan is located in the second chamber.
Description
Technical Field
The application relates to the technical field of advertisement devices, in particular to a heat dissipation structure and an advertisement device.
Background
Many devices, such as advertising machines, projectors, electromagnetic ovens, etc., are generally internally provided with an air-cooling heat dissipation device, and an air inlet and an air outlet are formed in a shell of the device, so that external air is pumped into a shell, flows through a main control board, a backlight board, etc. in the machine to work, generates devices with larger heat, and then outputs air flow containing the heat to the outside through the air outlet. However, even if the air inlet is provided with a filter device, the filter device is used in the daily course, and dust is inevitably accumulated in the machine, so that on one hand, dirt is caused, on the other hand, the electric environment in the machine is influenced, and in a serious case, the service life of the device is also reduced, and the device is caused to be faulty.
Therefore, a novel heat dissipation structure is needed, which not only can meet the heat dissipation requirement of the device, but also can achieve the dustproof effect, and avoid affecting the electronic components inside the device.
Disclosure of utility model
The utility model mainly aims at the problems and provides a heat dissipation structure and an advertising machine, which aim to solve the technical problems in the background technology.
The utility model provides a heat dissipation structure and an advertising machine, which comprise a wave plate, a sealing connecting plate and a first heat dissipation fan, wherein the wave plate and the sealing connecting plate are arranged in a shell cavity of an electric device, the number of the sealing connecting plates is two, the sealing connecting plates are respectively connected with two ends of the wave plate and are connected into a separation plate, the outer edge of the separation plate is connected with the side wall of the shell cavity of the electric device to separate electronic components in the shell cavity of the electric device from the outside, and the first heat dissipation fan is used for driving air to flow on the surface of the separation plate.
The electric device comprises a partition plate, a first cooling fan, a second cooling fan, a first cooling fan and a second cooling fan, wherein the partition plate is arranged on the inner side wall of a shell of the electric device, the outer edge of the partition plate is connected with the side wall of the shell of the electric device, the shell of the electric device is divided into a first cavity and a second cavity which are not communicated with each other, electronic components of the electric device are located in the first cavity, the second cavity is formed by enclosing the partition plate, the side wall of the shell of the electric device and a rear cover plate of the electric device, the rear cover plate of the electric device is provided with a ventilation opening, and the first cooling fan is located in the second cavity.
Further, the sealing connecting plate is of a flat plate structure, and inserting grooves corresponding to the sealing connecting plate are formed in two ends of the wavy plate.
The sealing plugs are used for connecting and plugging gap holes at the connecting positions of the sealing connecting plates and the wavy plates.
Further, the cross section of the wave plate has the wave crest and wave trough outline of V shape or curve shape.
Further, the side edge of the wave plate, which is not connected with the sealing connecting plate, is a flat side edge.
Further, the length direction of the groove on the wave plate is the same as the direction of the air draft or the direction of the air blowing of the first cooling fan in the second cavity.
Further, the electric device comprises a second cooling fan, wherein the second cooling fan is arranged in a cavity of an inner cavity of the electric device shell, and is positioned at one end of the wave plate or adjacent to the sealing connecting plate.
Further, the electronic component comprises a third cooling fan which is arranged in a cavity of the inner cavity of the electric device shell, and the third cooling fan and the second cooling fan are symmetrically distributed.
Further, the length direction of the groove on the wave plate is the same as the direction of the air draft or the direction of the air blowing of the second cooling fan and the third cooling fan in the first cavity.
Further, the first cooling fan, the second cooling fan and the third cooling fan are cross flow impeller type fans.
The application further provides an advertising machine which comprises the radiating structure, a second radiating fan, a third radiating fan, a second radiating fan and a third radiating fan, wherein the outer edge of the partition plate is connected with the side wall of the inner cavity of the shell of the advertising machine, the inner cavity of the shell of the advertising machine is divided into a first cavity and a second cavity which are not communicated with each other, a vent is arranged on a rear cover plate of the advertising machine, the first radiating fan is located in the second cavity, a first interval area is arranged between a display module of the advertising machine and a transparent protective layer of the advertising machine, a second interval area is arranged between the display module and the partition plate, the second radiating fan and the third radiating fan are respectively arranged at two ends of the display module, and fan air flow circulation is driven corresponding to the first interval area and the second interval area.
Compared with the prior art, the heat radiation structure and the advertising machine can transfer heat to the partition plate through the heat of the first cavity, and the wave plate is provided with the wave folds which are similar to those of a common flat plate, and the wave plate has a larger area, so that more heat can be transferred. The first cooling fan located in the second chamber pumps outside air into the second chamber through the ventilation opening with air inlet function, the air flows through the wave plate 1 with wavy folds, and then blows to the outside from the ventilation opening with air outlet function, so that heat generated during the working of the wave plate and the first chamber is taken away, and the heat dissipation and cooling effects are achieved.
Because division board outward flange is connected with electric installation's casing inner chamber lateral wall, separates electric installation's casing inner chamber into first cavity, the second cavity that are not intercommunicated, then external air can not enter into first cavity yet, and dirt, perhaps trouble are caused to the electronic components department that also can not electric installation to the dust granule that mingles, can also play certain water-proof effects for first cavity simultaneously, lifting means life.
Drawings
Fig. 1 is a schematic diagram of a heat dissipation structure and an advertisement machine without a back cover board.
Fig. 2 is a cross-sectional view of a heat dissipation structure and an advertisement player according to the present application.
Fig. 3 is a schematic diagram of a heat dissipation structure and a partition plate of an advertisement machine according to the present application.
Fig. 4 is a schematic diagram of a heat dissipation structure and a partition plate of an advertisement machine according to the present application.
The reference numerals shown in the figure comprise 1, a wave plate, 101, a plugging groove, 102, a clearance hole, 150, a partition plate, 2, a sealing connection plate, 3, a first cooling fan, 4, a shell, 510, a first cavity, 520, a second cavity, 6, a rear cover plate, 7, a sealing plug, 8, a second cooling fan, 9, a third cooling fan, 10, a display module, 11, a transparent protective layer, 12, a first interval region, 13 and a second interval region.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the utility model. The connection relationships shown in the drawings are for convenience of clarity of description only and are not limiting on the manner of connection.
It is noted that when one component is considered to be "connected" to another component, it may be directly connected to the other component, or intervening components may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. It should also be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, or in communication between two elements, unless explicitly stated or otherwise. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
It should also be noted that, in the description of the present utility model, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, 3 and 4, the present embodiment provides a heat dissipation structure and an advertisement machine, which includes a wave plate 1, a sealing connection plate 2, and a first heat dissipation fan 3, wherein the wave plate 1 and the sealing connection plate 2 are disposed in an inner cavity of a housing of an electrical apparatus, the sealing connection plate 2 is respectively connected with two ends of the wave plate 1 and is connected to form a partition plate 150, an outer edge of the partition plate 150 is connected with a side wall of the inner cavity of the housing 4 of the electrical apparatus to separate electronic components in the inner cavity of the housing of the electrical apparatus from the outside, and the first heat dissipation fan 3 is used for driving air to flow on a surface of the partition plate 150.
In this embodiment, the housing of the electrical device may not be provided with a back cover plate, and the partition plate 150 directly serves as the back cover plate of the housing of the electrical device. The first heat radiation fan 3 may be provided outside the electrical device housing, and may be optionally a waterproof fan.
The electric device can be the following advertising machine, and can also be electric equipment such as a projector, an electromagnetic oven, a computer host and the like.
Referring to fig. 1-4, the embodiment provides a heat dissipation structure and an advertisement machine, which comprises a wave plate 1, a sealing connection plate 2 and a first heat dissipation fan 3, wherein the wave plate 1 and the sealing connection plate 2 are arranged in an inner cavity of a shell of an electric device, the sealing connection plate 2 is respectively connected with two ends of the wave plate 1 and is connected with the two ends of the wave plate to form a partition plate 150, the outer edge of the partition plate 150 is connected with the side wall of the inner cavity of the shell 4 of the electric device to divide the inner cavity of the shell 4 of the electric device into a first cavity 510 and a second cavity 520 which are not communicated with each other, electronic components of the electric device are located in the first cavity 510, the second cavity 520 is formed by enclosing the partition plate 150, the side wall of the shell part of the electric device and a rear cover plate 6 of the electric device, a vent (not shown) is arranged on the rear cover plate 6 of the electric device, and the first heat dissipation fan 3 is located in the second cavity 520.
In some embodiments, the outer contour of the partition plate 150 may be shaped like the contour of the inner cavity side wall of the housing 4 of the electrical device, and the box or cabinet is generally a regular rectangular body, and some boxes or cabinets are shaped, so that the partition plate 150 corresponds to the inner contour and is correspondingly shaped, so that the outer edge abuts against the inner cavity side wall of the housing 4, and the first chamber 510 and the second chamber 520 are separated from communication with each other.
In some embodiments, the first heat dissipation fan 3 may be disposed corresponding to the ventilation opening.
The ventilation openings are at least one air inlet and one air outlet, and the corresponding ventilation openings are the air inlets or the air outlets according to different directions of fan blades of the first cooling fan 3.
The vent is not limited to the rear cover plate 6, and may be provided at other portions of the housing 4.
In operation, the heat of the first chamber 510 is transferred to the partition plate 150, and since the partition plate 150 is provided with the wave plate 1, the wave plate 1 has wave-shaped folds compared with a common flat plate, and the wave plate 1 has a larger area with the same perimeter, so that more heat can be transferred. The first cooling fan 3 located in the second chamber 520 pumps the external air into the second chamber 520 through the ventilation opening with air inlet function, the air flows through the wave plate 1 with wave-shaped folds, the air flow on the surface of the separation plate 150 is enhanced, convection is enhanced, and the air is blown to the outside through the ventilation opening with air outlet function, so that the heat generated during the operation of the wave plate 1 and the first chamber 510 is taken away, and the heat dissipation and cooling effects are achieved.
Because division board 150 outward flange is connected with electrical apparatus's casing 4 inner chamber lateral wall, separates electrical apparatus's casing 4 inner chamber into first cavity 510, second cavity 520 that are not intercommunicated, then external air also can not enter into first cavity 510, and dirt is also not led to the fact to electrical apparatus's electronic components department to dirt granule that mingles, perhaps trouble, can also play certain water-proof effects for first cavity 510 simultaneously, lifting means life.
Example 1
The sealing connection plates 2 at the two ends of the wave plate 1 and the wave plate 1 are of an integrated structure, and belong to the same plate, the sealing connection plates 2 are of a wavy connection structure with the wave plate 1, gradually transition into a flat structure, and the flat structure section of the sealing connection plates 2 is connected with the side wall of the inner cavity of the shell 4 of the electrical device so as to separate the first cavity 510 and the second cavity 520 into non-communication.
Example two
The sealing connection plates 2 at the two ends of the wave plate 1 and the wave plate 1 are in a non-integral structure, and are three independent units, and the sealing connection plates 2 can be welded, glued, screwed and the like and are connected with the wave plate 1. One end of the sealing connection plate 2 connected with the wave plate 1 is of a wave-shaped connection structure with the wave plate 1, and the other end is gradually transited into a straight structure.
Example III
Referring to fig. 2 and 3, the sealing connection plate 2 has a flat plate structure, and insertion grooves 101 corresponding to the sealing connection plate 2 are provided at two ends of the corrugated plate 1.
The sealing plugs 7 are used for connecting and sealing gap holes 102 at the connecting positions of the sealing connecting plate 2 and the wavy plate 1.
In this embodiment, the sealing connection plates 2 at two ends of the wave plate 1 and the wave plate 1 are in a non-integrated structure, and the position of the inserting groove 101 may be the center dividing line position of the cross section of the wave plate 1. The sealing connection plate 2 is of a flat plate structure, one end of the sealing connection plate is inserted into the inserting groove 101, the inserting groove 101 is used as a connection base, the wave plate 1 and the sealing connection plates 2 at the two ends are convenient to further be connected in a welded mode or in a glue mode, connection is enhanced, and the gap hole 102 is sealed.
The sealing plug 7 can also be directly used for connecting and sealing the clearance hole 102.
In some embodiments, the cross section of the wave plate 1 has a wave crest and wave trough profile of a V shape or a curve shape.
Compared with a radiating fin plate, the wave plate 1 is easier to process and manufacture and has lower cost. Since the wave plate 1 can be made of a common flat plate, a wave-like surface is prepared by one stamping stroke of a stamping die.
The heat radiation fin plate often needs a machine tool, and a row of fins are planed and cut with high energy consumption and low efficiency.
Moreover, the wave plate 1 is used as a plate body, so that dust wiping and cleaning are more convenient.
Referring to fig. 2 and 3, the side of the corrugated board 1, which is not connected to the sealing connection board 2, is a flat side.
When the edge contour is projected as a rectangle, as seen in front view of the wave plate 1, the two sides of the wave plate 1 are straight sides.
Thus, the straight side edge of the wave plate 1 is connected with the side wall of the inner cavity of the shell 4, and the wave plate is more fit, so that the first cavity 510 and the second cavity 520 are not communicated more.
Preferably, the length direction of the groove on the wave plate 1 is the same as the direction of the air draft or the direction of the air blowing of the first cooling fan 3.
The air duct formed in this way is more convenient for the air current to circulate fast and pass through, takes away heat, avoids the accumulated heat.
Referring to fig. 2, the heat dissipation device includes a second heat dissipation fan 8, wherein the second heat dissipation fan 8 is disposed in a chamber where an electronic component in a housing cavity of the electrical device is located, and when the electrical device is disposed on the back cover plate 6, the second heat dissipation fan is a first chamber 510 and is located at one end of the wave plate 1 or adjacent to the sealing connection plate 2.
By the second cooling fan 8, the air in the first chamber 510 is blown, so that the temperature and the heat are balanced, and the heat transfer to the wave plate 1 is more sufficient.
Referring to fig. 2, the heat dissipation device includes a third heat dissipation fan 9, wherein the third heat dissipation fan 9 is disposed in a chamber where an electronic component in an inner cavity of a housing of the electrical device is located, and when the electrical device is disposed on the back cover 6, the third heat dissipation fan is a first chamber 510 and is disposed symmetrically with the second heat dissipation fan 8.
The third heat radiation fan 9 cooperates with the second heat radiation fan 8 to enhance the circulation of air flowing in the first chamber 510.
In some embodiments, in order to accelerate the flow of the external air in the second chamber 520, other fans cooperating with the first cooling fan 3 may be added in the second chamber 520.
Preferably, the length direction of the grooves on the wave plate 1 is the same as the direction of the air draft or the blowing air flow of the second cooling fan 8 and the third cooling fan 9 in the first chamber 510.
Preferably, the first radiator fan 3, the second radiator fan 8, and the third radiator fan 9 are cross-flow impeller fans.
The application further provides an advertising machine, which comprises the radiating structure, a second radiating fan 8 and a third radiating fan 9, wherein the outer edge of the partition plate 150 is connected with the side wall of the inner cavity of the shell 4 of the advertising machine, the inner cavity of the shell 4 of the advertising machine is divided into a first cavity 510 and a second cavity 520 which are not communicated with each other, a vent is arranged on the rear cover plate 6 of the advertising machine, the first radiating fan 3 is positioned in the second cavity 520 and corresponds to the vent, a first spacing area 12 is arranged between the display module 10 of the advertising machine and the transparent protective layer 11 of the advertising machine, a second spacing area 13 is arranged between the display module 10 and the partition plate 150, the second radiating fan 8 and the third radiating fan 9 are respectively arranged at two ends of the display module 10, and air flow circulation is driven by fan air flow corresponding to the first spacing area 12 and the second spacing area 13.
The display module 10 of the advertisement machine is generally a display screen end surface for displaying a playing image or video, and the back surface of the display screen is various electronic components, such as a main control board, a driving board, etc. The display screen end face of the display module 10 faces the transparent protective layer 11, and a first spacing area 12 is arranged between the display screen end face and the transparent protective layer 11.
The transparent protective layer 11 may be any of glass, tempered glass, and acrylic plate. The back side of the display screen of the display module 10 is relatively close to the wave plate 1 of the partition plate 150.
By arranging the second cooling fan 8 and the third cooling fan 9, the two air channels corresponding to the first interval region 12 and the second interval region 13 respectively strengthen the air flow circulation in the first chamber 510, so that the heat on the display screen side can be conveniently transferred to the wave plate 1 and then radiated. And the second cooling fan 8 and the third cooling fan 9 are reasonably distributed, so that the thickness of the advertising machine is prevented from being influenced.
In the description and claims of the present application, the words "comprise/comprising" and the words "have/include" and variations thereof are used to specify the presence of stated features, values, steps, or components, but do not preclude the presence or addition of one or more other features, values, steps, components, or groups thereof.
Some features of the utility model, which are, for clarity of illustration, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, some features of the utility model, which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable combination in different embodiments.
The foregoing description of the preferred embodiment of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (11)
1. A heat dissipation structure is applied to an electrical device with a box body or a cabinet body and is characterized by comprising a wave plate, a sealing connecting plate and a first heat dissipation fan, wherein the wave plate and the sealing connecting plate are arranged in a shell cavity of the electrical device, the number of the sealing connecting plates is two and are respectively connected with two ends of the wave plate, the two sealing connecting plates are connected into a separation plate, the outer edge of the separation plate is connected with the side wall of the shell cavity of the electrical device to separate electronic components in the shell cavity of the electrical device from the outside, and the first heat dissipation fan is used for driving air to flow on the surface of the separation plate.
2. The heat dissipation structure according to claim 1, wherein the outer edge of the partition plate is connected with the side wall of the inner cavity of the housing of the electrical device to divide the inner cavity of the housing of the electrical device into a first cavity and a second cavity which are not communicated with each other, the electronic components of the electrical device are located in the first cavity, the second cavity is formed by enclosing the partition plate, the side wall of the housing part of the electrical device and the rear cover plate of the electrical device, the rear cover plate of the electrical device is provided with a vent, and the first heat dissipation fan is located in the second cavity.
3. A heat dissipation structure according to claim 1 or 2, wherein the sealing connection plate is a flat plate structure, and insertion grooves corresponding to the sealing connection plate are provided at two ends of the corrugated plate.
4. The heat dissipation structure according to claim 3, comprising a plurality of sealing plugs for connecting and plugging clearance holes at the connection points of the sealing connection plates and the corrugated plates.
5. A heat dissipating structure according to claim 1 or 2, wherein the wave plate has a cross-section with a "V" shape or a curved shape of the wave crest and wave trough profile.
6. A heat dissipating structure according to claim 1 or 2, wherein the side of said corrugated plate not connected to said sealing web is a flat side.
7. A heat dissipating structure according to claim 1 or 2, wherein the length direction of the grooves in the wave plate is the same as the direction of the air draft or the direction of the air blowing of the first heat dissipating fan.
8. The heat dissipation structure as defined in claim 1 or 2, comprising a second heat dissipation fan, wherein the second heat dissipation fan is disposed in a chamber of an inner cavity of the electrical device housing, and is disposed at one end of the wave plate or adjacent to the sealing connection plate.
9. The heat dissipation structure as defined in claim 8, comprising a third heat dissipation fan, wherein the third heat dissipation fan is disposed in a chamber of an inner cavity of the electrical device housing, and is disposed symmetrically with respect to the second heat dissipation fan.
10. The heat dissipating structure of claim 9, wherein the length direction of the grooves on the wave plate is the same as the direction of the air draft or the blowing air flow of the second heat dissipating fan or the third heat dissipating fan.
11. An advertising machine is characterized by comprising a radiating structure according to any one of claims 1 to 6, a second radiating fan and a third radiating fan, wherein the outer edge of a partition plate is connected with the side wall of the inner cavity of a shell of the advertising machine to divide the inner cavity of the shell of the advertising machine into a first cavity and a second cavity which are not communicated with each other, a vent is arranged on a rear cover plate of the advertising machine, the first radiating fan is located in the second cavity, a first interval area is arranged between a display module of the advertising machine and a transparent protective layer of the advertising machine, a second interval area is arranged between the display module and the partition plate, and the second radiating fan and the third radiating fan are respectively arranged at two ends of the display module and fan-driven airflow circulation corresponding to the first interval area and the second interval area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422641392.1U CN223402727U (en) | 2024-10-31 | 2024-10-31 | Heat radiation structure and advertisement machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422641392.1U CN223402727U (en) | 2024-10-31 | 2024-10-31 | Heat radiation structure and advertisement machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223402727U true CN223402727U (en) | 2025-09-30 |
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ID=97147123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422641392.1U Active CN223402727U (en) | 2024-10-31 | 2024-10-31 | Heat radiation structure and advertisement machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223402727U (en) |
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2024
- 2024-10-31 CN CN202422641392.1U patent/CN223402727U/en active Active
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