CN218273068U - Dustproof construction and projection thermostated container - Google Patents

Abstract

The utility model belongs to the technical field of the projection installation device, a dustproof construction and projection thermostated container are provided, and dustproof construction includes first axis body, the second axis body, dust screen, actuating mechanism and controller. The first shaft body and the second shaft body are arranged on the wall of the box body of the projection thermostat in parallel; two ends of the dust screen are respectively wound on the first shaft body and the second shaft body, at least part of the dust screen between the first shaft body and the second shaft body is covered on the ventilation opening of the box body, and the length of the dust screen is larger than the size of the ventilation opening in the direction from the first shaft body to the second shaft body; the driving mechanism is used for driving the first shaft body to rotate so as to drive the dust screen which is covered at the vent to be wound on the first shaft body and drive part of the dust screen which is wound on the second shaft body to be unfolded from the second shaft body to cover the vent; the controller is electrically connected with the driving mechanism to control the driving mechanism to operate. The dustproof construction that this embodiment provided, the artifical frequency of changing of dust screen is low, and the maintenance cost is low.

Description

Dustproof construction and projection thermostated container

Technical Field

The application relates to the technical field of projection installation devices, in particular to a dustproof structure and a projection thermostat.

Background

The projector is a device capable of projecting images or videos onto a curtain, and based on the imaging principle of the projector, the projector needs to perform dustproof treatment on internal optical components, so that the influence of dust on the brightness and the picture quality of the projector is avoided. The dustproof structure of the present projector generally comprises a dustproof net, and the dustproof net is generally fixedly covered at the vent of a projection incubator for mounting the projector. Because the dust that accumulates on the dust screen can cause the vent to block up, influences the projecting apparatus heat dissipation, so above-mentioned design needs the artifical dust screen of frequently changing usually in the in-service use, and maintenance cost is higher.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a dustproof construction and projection thermostated container to solve the dustproof construction that exists among the prior art and need artifical frequent change dust screen, the higher technical problem of maintenance cost.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: there is provided a dustproof structure for a projection oven including a cabinet, the dustproof structure including:

the first shaft body is arranged on the wall of the box body;

the second shaft body is arranged on the box wall of the box body in parallel with the first shaft body;

the two ends of the dust screen are respectively wound on the first shaft body and the second shaft body, at least part of the dust screen cover positioned between the first shaft body and the second shaft body is arranged at a ventilation opening of the box body, and the length of the dust screen is greater than the size of the ventilation opening in the direction from the first shaft body to the second shaft body;

the driving mechanism is used for driving the first shaft body to rotate so as to drive the dust screen which is arranged at the vent to be wound on the first shaft body in a covering manner and drive part of the dust screen which is wound on the second shaft body to be unfolded from the second shaft body to cover the vent;

and the controller is electrically connected with the driving mechanism to control the driving mechanism to operate.

In one embodiment, the controller is configured to control the driving mechanism to operate for a first predetermined time at predetermined time intervals.

In one of them embodiment, dustproof construction still includes temperature sensor and/or wind pressure sensor, temperature sensor with wind pressure sensor respectively with controller electric connection, temperature sensor is used for measuring the temperature in the box and generates the temperature value and transmit to the controller, wind pressure sensor is used for measuring wind pressure and generate the wind pressure value of vent department and transmit to the controller, the controller is used for according to the temperature value and/or wind pressure value control actuating mechanism operation second predetermined time.

In one embodiment, the dustproof structure further comprises a dust collection cover, the first shaft body is located below the second shaft body, and the dust collection cover is mounted on the wall of the box body and located below the first shaft body.

In one embodiment, the dustproof structure further comprises an air guide, wherein the air guide comprises an annular frame and an attaching plate connected to one end of the annular frame; the other end of the annular frame body is connected to the box wall of the box body and arranged around the ventilation opening; the attaching plate is provided with an air guide opening corresponding to the ventilation opening, and is attached to one side, close to the ventilation opening, of the dustproof net at the ventilation opening in a covering mode.

In one embodiment, the annular frame body comprises a first side plate, a second side plate, a third side plate and a fourth side plate which are vertically connected in sequence, rounded corners are respectively arranged between the first side plate and the laminating plate and between the third side plate and the laminating plate, and the first shaft body and the second shaft body are respectively located on one sides, far away from the ventilation opening, of the first side plate and the third side plate.

In one embodiment, the dust-proof structure further includes a limiting member, and the limiting member and the dust-proof net covering the vent are attached to each other at a side of the vent away from the vent.

In one embodiment, the number of the limiting members is two, each of the two limiting members includes a first plate and a second plate that are vertically connected to each other, the two first plates are respectively connected to the second side plate and the fourth side plate, and the two second plates are respectively attached to one side of the dust screen covering the vent, which is away from the vent.

For realizing above-mentioned purpose, this application still provides a projection thermostated container, the projection thermostated container includes box and above-mentioned dustproof construction, the box have the installation cavity and with the vent of installation cavity intercommunication, the installation cavity is used for installing the projecting apparatus, dustproof construction locates the tank wall of box is used for the process the air of vent filters.

In one embodiment, the box body comprises a box body and a door panel; the door plate is arranged on the box body in a turnable manner and surrounds the box body to form the installation cavity, the door plate is provided with the ventilation opening, and the dustproof structure is arranged on the inner side of the door plate.

The application provides a dustproof construction and projection thermostated container's beneficial effect lies in: compared with the prior art, the dustproof structure provided by the application starts the driving mechanism to drive the first shaft body to rotate, the first shaft body can drive the dustproof net which is covered at the vent to be wound on the first shaft body, and simultaneously drive part of the dustproof net which is wound on the second shaft body to be unfolded from the second shaft body to be covered at the vent again, so that the effect of automatically replacing the dustproof net at the vent is achieved; when the dust screen of vent department need be changed once more, can repeat above-mentioned operation, realize the automatic dust screen of changing vent department once more, only need be changed the dust screen is whole by the manual work after the dust screen of rolling on the second shaft body consumes. It is thus clear that the dustproof construction that this embodiment provided, after the many times automatic change dust screen of vent department, just need be changed the dust screen is whole by the manual work, and the manual work of dust screen is changed the frequency and is hanged down, and dustproof construction's maintenance cost is low.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments or the prior art description will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings may be obtained according to these drawings without inventive labor.

Fig. 1 is a first schematic structural diagram of a projection oven according to an embodiment of the present disclosure;

fig. 2 is a second schematic structural diagram of a projection incubator according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a door panel of a box and a dustproof structure provided in the embodiment of the present application;

fig. 4 is a schematic block diagram of a controller, a driving mechanism, a temperature sensor and a wind pressure sensor according to an embodiment of the present disclosure.

Wherein, in the figures, the respective reference numerals:

10-projection thermostat;

100-a dustproof structure; 110-a first shaft; 120-a second shaft; 130-dust screen; 140-a drive mechanism; 150-a controller; 161-temperature sensor; 162-a wind pressure sensor; 170-dust collecting cover; 180-air guide; 181-annular frame body; 1811-first side panel; 1812-a second side panel; 1813-third side panel; 1814-fourth side panel; 1815-rounding; 182-a joint plate; 1821-air guiding port; 190-a stop; 191-a first plate body; 192-a second plate;

200-a box body; 210-a mounting cavity; 220-a vent; 230-a tank body; 240-door panel.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1 and 2, a dust-proof structure 100 and a projection oven 10 according to an embodiment of the present application will now be described. The projection incubator 10 includes a dustproof structure 100 and a case 200, the case 200 has a mounting cavity 210 and a vent 220, the mounting cavity 210 communicates with the vent 220, and the mounting cavity 210 is used for mounting a projector. The dust-proof structure 100 is disposed on a wall of the box 200 and is used for filtering air passing through the ventilation opening 220, specifically, a grid plate may be disposed at the ventilation opening 220, the ventilation opening 220 may be an air inlet or an air outlet of the box 200, and preferably, the ventilation opening 220 is an air inlet of the box 200.

Referring to fig. 2 and 3, the dust-proof structure 100 includes a first shaft 110, a second shaft 120, a dust-proof net 130, a driving mechanism 140 and a controller 150. The first shaft body 110 and the second shaft body 120 are arranged on the wall of the box body 200 in parallel; two ends of the dust screen 130 are respectively wound on the first shaft body 110 and the second shaft body 120, at least part of the dust screen 130 between the first shaft body 110 and the second shaft body 120 is covered on the ventilation opening 220 of the box body 200, and the length of the dust screen 130 is greater than the dimension of the ventilation opening 220 in the direction from the first shaft body 110 to the second shaft body 120; the driving mechanism 140 is used for driving the first shaft 110 to rotate so as to drive the dust screen 130 covered at the vent 220 to be wound on the first shaft 110, and drive part of the dust screen 130 wound on the second shaft 120 to be unfolded from the second shaft 120 to cover the vent 220; the controller 150 is electrically connected to the driving mechanism 140 to control the driving mechanism 140 to operate.

Specifically, the driving mechanism 140 may be a motor or a combination of a motor and a gear transmission mechanism, and may be disposed as needed, which is not limited herein. Both the drive mechanism 140 and the controller 150 may be mounted to the wall of the tank 200.

Compared with the prior art, the dust-proof structure 100 provided by the application, the driving mechanism 140 is started to drive the first shaft body 110 to rotate, the first shaft body 110 can drive the dust-proof net 130 which is covered at the vent 220 to be wound on the first shaft body 110, and simultaneously drive part of the dust-proof net 130 which is wound on the second shaft body 120 to be unfolded from the second shaft body 120 to be re-covered at the vent 220, in other words, the first shaft body 110 can drive the dust-proof net 130 which is originally covered at the vent 220 and accumulated with dust to be wound on the first shaft body 110, and drive the dust-proof net 130 which is originally wound on the second shaft body 120 and is not used to be re-covered at the vent 220, so that the effect of automatically replacing the dust-proof net 130 at the vent 220 is achieved; when the dust screen 130 at the vent 220 needs to be replaced again, the above operations can be repeated, and the dust screen 130 at the vent 220 can be automatically replaced again, until the dust screen 130 wound on the second shaft 120 is consumed, the dust screen 130 needs to be replaced integrally by a worker. It can be seen that, in the dust-proof structure 100 provided in this embodiment, after the dust-proof net 130 at the vent 220 is automatically replaced for multiple times, the dust-proof net 130 needs to be replaced integrally by a manual operation, the manual replacement frequency of the dust-proof net 130 is low, and the maintenance cost of the dust-proof structure 100 is low.

In another embodiment of the present application, referring to fig. 4, the controller 150 is configured to control the driving mechanism 140 to operate for a first predetermined time at predetermined time intervals.

Specifically, the predetermined time may be one month, two months, three months, or the like, and may be set as required, the first predetermined time may be five seconds, ten seconds, or the like, and may be determined according to parameters such as the power of the driving mechanism 140, the size of the vent 220 in the direction from the first shaft 110 to the second shaft 120, and the like, and only the requirement that the driving mechanism 140 operates for the first predetermined time is met, and the dust screen 130 that originally covers the vent 220 and accumulates dust is completely wound around the first shaft 110.

In the dust-proof structure 100 provided by this embodiment, the controller 150 may start the driving mechanism 140 at a fixed time, so as to realize automatic replacement of the dust-proof net 130 at the ventilation opening 220, thereby ensuring the dust-proof effect.

In another embodiment of the present application, referring to fig. 4, the dust-proof structure 100 further includes a temperature sensor 161 and/or a wind pressure sensor 162, the temperature sensor 161 and the wind pressure sensor 162 are electrically connected to the controller 150, respectively, the temperature sensor 161 is used for measuring a temperature inside the box 200 and generating a temperature value to be transmitted to the controller 150, the wind pressure sensor 162 is used for measuring a wind pressure at the air vent 220 and generating a wind pressure value to be transmitted to the controller 150, and the controller 150 is used for controlling the driving mechanism 140 to operate for a second predetermined time according to the temperature value and the wind pressure value.

Specifically, when the dust-proof structure 100 is separately provided with the temperature sensor 161, the controller 150 may control the driving mechanism 140 to operate for the second predetermined time when the temperature value measured by the temperature sensor 161 is greater than the first predetermined value. When the dust-proof structure 100 is separately provided with the wind pressure sensor 162, the controller 150 may control the driving mechanism 140 to operate for a second predetermined time when the wind pressure value measured by the wind pressure sensor 162 is less than a second predetermined value. When the dustproof structure 100 is provided with both the temperature sensor 161 and the wind pressure sensor 162, the controller 150 may control the driving mechanism 140 to operate for a second predetermined time when the temperature value is greater than the first predetermined value and the wind pressure value is less than the second predetermined value.

Specifically, the first predetermined value may be 45 ℃, 50 ℃, 60 ℃ or the like, and may be set as needed, and is not limited herein. The second predetermined value may be set according to a normal wind pressure at the vent 220, and the second predetermined value is lower than the normal wind pressure at the vent 220. The second predetermined time may be five seconds, ten seconds, etc., and may be determined according to parameters such as the power of the driving mechanism 140, the size of the ventilation opening 220 in the direction from the first shaft 110 to the second shaft 120, etc., and the driving mechanism 140 operates for the second predetermined time, and the dust-proof net 130 originally covering the ventilation opening 220 and accumulating dust may be completely or partially wound around the first shaft 110.

In the dust-proof structure 100 provided by this embodiment, when the temperature in the box 200 is greater than the first predetermined value and/or the wind pressure at the vent 220 is less than the second predetermined value, the probability that the dust on the dust-proof net 130 blocks the vent 220 is high, and at this time, the controller 150 controls the driving mechanism 140 to start, so that the dust-proof net 130 at the vent 220 can be automatically replaced, the ventilation effect of the vent 220 is improved, and the influence on the heat dissipation of the projector is avoided as much as possible.

In another embodiment of the present application, please refer to fig. 2 and 3, the dust-proof structure 100 further includes a dust-collecting cover 170, the first shaft 110 is located below the second shaft 120, and the dust-collecting cover 170 is mounted on a wall of the box 200 and located below the first shaft 110.

Specifically, one side of the dust-collecting cover 170 is open, and the top of the dust-collecting cover is open or semi-open, the open side of the dust-collecting cover 170 is connected to the wall of the box 200, the first shaft 110 is installed in the space between the dust-collecting cover 170 and the wall of the box 200, and the dust-proof net 130 is connected to the second shaft 120 from the first shaft 110 through the area where the top of the dust-collecting cover 170 is open.

In the dust-proof structure 100 provided in this embodiment, the dust-collecting cover 170 can receive dust falling from the dust-proof net 130 wound on the first shaft 110, so as to avoid the dust from affecting optical components in the box 200 as much as possible, which is beneficial to ensuring the projection effect of the projector.

In another embodiment of the present application, referring to fig. 2 and fig. 3, the dust-proof structure 100 further includes an air guide 180, where the air guide 180 includes an annular frame 181 and an attachment plate 182 connected to one end of the annular frame 181; the other end of the annular frame 181 is connected to the wall of the box 200 and surrounds the vent 220; the attachment plate 182 has an air guide opening 1821 corresponding to the vent 220, and is attached to the side of the dust screen 130 covering the vent 220 close to the vent 220.

Specifically, the attachment plate 182 and the side of the dust screen 130 covering the vent 220 close to the vent 220 are attached to each other, it can be understood that the surface of the dust screen 130 close to the vent 220 and the surface of the attachment plate 182 far from the vent 220 are attached to each other, and the dust screen 130 can cover the air guide opening 1821 of the attachment plate 182.

In the dust-proof structure 100 provided in this embodiment, during operation, the external air flow enters the inside of the annular frame 181 through the vent 220, the annular frame 181 guides the external air flow entering from the vent 220 to the air guiding opening 1821, the external air flow guided to the air guiding opening 1821 enters the box 200 after being filtered by the dust screen 130 at the air guiding opening 1821, in the above process, since the attachment plate 182 and the dust screen 130 are attached to each other, and the air guiding opening 1821 on the attachment plate 182 is covered by the dust screen 130, most of the external air flow must be filtered by the dust screen 130 before finally entering the box 200, and the dust screen 130 cannot be bypassed, so that the dust-proof effect of the dust-proof structure 100 can be ensured.

In another embodiment of the present application, referring to fig. 3, the annular frame 181 includes a first side plate 1811, a second side plate 1812, a third side plate 1813, and a fourth side plate 1814, which are vertically connected in sequence, rounded corners 1815 are respectively disposed between the first side plate 1811 and the third side plate 1813 and the fitting plate 182, and the first shaft 110 and the second shaft 120 are respectively located on the sides of the first side plate 1811 and the third side plate 1813 away from the ventilation opening 220.

In the dust-proof structure 100 provided by this embodiment, the rounded corners 1815 disposed between the first side plate 1811 and the attachment plate 182 and between the second side plate 1812 and the attachment plate 182 can avoid forming sharp corners on the moving path of the dust-proof net 130, can avoid the dust-proof net 130 from being scratched as much as possible, and are favorable for the dust-proof net 130 to be smoothly wound on the first shaft 110 and unwound from the second shaft 120.

In another embodiment of the present application, please refer to fig. 2 and fig. 3, the dust-proof structure 100 further includes a position-limiting member 190, and the position-limiting member 190 and a side of the dust-proof net 130 covering the ventilation opening 220, which is far away from the ventilation opening 220, are attached to each other. So set up, locating part 190 can keep away from the one side of vent 220 at dust screen 130 and carry on spacingly to dust screen 130, makes dust screen 130 keep the degree of freedom that moves along the length direction of dust screen 130, can roll up in first axis body 110 and expand from second axis body 120 to, make dust screen 130 laminate with the one side that laminating board 182 kept away from vent 220 well, can avoid outside air current to bypass dust screen 130 as far as possible and directly get into in the box 200, guarantee dustproof effect.

In another embodiment of the present application, please refer to fig. 1 and fig. 2, the two position-limiting members 190 are two, each of the two position-limiting members 190 includes a first plate 191 and a second plate 192 vertically connected to each other, the first plate 191 is respectively connected to the second side plate 1812 and the fourth side plate 1814, and the second plate 192 is attached to a side of the dust screen 130 covering the ventilation opening 220, the side of the dust screen being away from the ventilation opening 220.

The dustproof structure 100 provided in this embodiment can make both sides of the dustproof mesh 130 in the width direction better fit with the fitting plate 182, and avoid external air flow from bypassing the dustproof mesh 130 and directly entering the box 200 as much as possible, which is beneficial to ensuring the dustproof effect.

Referring to fig. 1 and 2, the present application further provides a projection incubator 10, where the projection incubator 10 includes the above-mentioned dustproof structure 100 and a box body 200, the box body 200 has a mounting cavity 210 and a ventilation opening 220 communicated with the mounting cavity 210, the mounting cavity 210 is used for mounting a projector, and the dustproof structure 100 is disposed on a wall of the box body 200 and used for filtering air passing through the ventilation opening 220.

In the projection incubator 10 provided by this embodiment, due to the provision of the above-mentioned dustproof structure 100, when the dustproof net 130 at the vent 220 needs to be replaced, the driving mechanism 140 is started to drive the first shaft 110 to rotate, the first shaft 110 can drive the dustproof net 130 covered at the vent 220 to be wound on the first shaft 110, and simultaneously drive a part of the dustproof net 130 wound on the second shaft 120 to be unwound from the second shaft 120 to be re-covered at the vent 220, so as to achieve the effect of automatically replacing the dustproof net 130 at the vent 220; when the dust screen 130 at the vent 220 needs to be replaced again, the above operations can be repeated, and the dust screen 130 at the vent 220 can be automatically replaced again, until the dust screen 130 wound on the second shaft 120 is consumed, the dust screen 130 needs to be replaced integrally by a worker. In the projection oven 10 provided in this embodiment, after the dust screen 130 at the vent 220 is automatically replaced many times, the dust screen 130 needs to be replaced entirely by a manual work, so that the manual replacement frequency of the dust screen 130 is low, and the maintenance cost is low.

In another embodiment of the present application, referring to fig. 1 and 2, the box body 200 includes a box body 230 and a door panel 240; the door panel 240 is installed to the box body 230 in a turnable manner and surrounds the box body 230 to form an installation cavity 210, the door panel 240 is provided with a ventilation opening 220, and the dustproof structure 100 is installed on the inner side of the door panel 240.

Specifically, the inner side of the door panel 240 refers to a side of the door panel 240 close to the installation cavity 210 in the closed state.

In the projection oven 10 provided by this embodiment, the dustproof structure 100 is installed inside the door panel 240, so as to protect the dustproof structure 100 to a certain extent, and when the dustproof net 130 of the dustproof structure 100 needs to be replaced, only the door panel 240 needs to be opened, so as to replace the dustproof net 130 conveniently.

The present invention is not intended to be limited to the particular embodiments shown and described, and all changes, equivalents and modifications that come within the spirit and scope of the invention are desired to be protected.

Claims (10)

1. The utility model provides a dustproof construction for projection thermostated container including the box, its characterized in that, dustproof construction includes:

the first shaft body is arranged on the box wall of the box body;

the second shaft body is arranged on the box wall of the box body in parallel with the first shaft body;

the two ends of the dust screen are respectively wound on the first shaft body and the second shaft body, at least part of the dust screen cover positioned between the first shaft body and the second shaft body is arranged at a ventilation opening of the box body, and the length of the dust screen is greater than the size of the ventilation opening in the direction from the first shaft body to the second shaft body;

the driving mechanism is used for driving the first shaft body to rotate so as to drive the dust screen which is covered and arranged at the vent to be wound on the first shaft body and drive part of the dust screen which is wound and arranged on the second shaft body to be unfolded from the second shaft body to be covered and arranged on the vent;

and the controller is electrically connected with the driving mechanism to control the driving mechanism to operate.

2. The dust-proof structure according to claim 1, wherein the controller is configured to control the driving mechanism to operate for a first predetermined time at predetermined intervals.

3. The dustproof structure of claim 1, further comprising a temperature sensor and/or a wind pressure sensor, wherein the temperature sensor and the wind pressure sensor are electrically connected to the controller respectively, the temperature sensor is used for measuring the temperature inside the box body and generating a temperature value to be transmitted to the controller, the wind pressure sensor is used for measuring the wind pressure at the vent and generating a wind pressure value to be transmitted to the controller, and the controller is used for controlling the driving mechanism to operate for a second predetermined time according to the temperature value and/or the wind pressure value.

4. The dust-proof structure according to claim 1, further comprising a dust-receiving cover, wherein the first shaft is located below the second shaft, and the dust-receiving cover is mounted on a wall of the box body and located below the first shaft.

5. The dust-proof structure according to any one of claims 1 to 4, further comprising an air guide member, the air guide member comprising an annular frame body and an attachment plate attached to one end of the annular frame body; the other end of the annular frame body is connected to the wall of the box body and arranged around the ventilation opening; the attaching plate is provided with an air guide opening corresponding to the ventilation opening, and is attached to one side, close to the ventilation opening, of the dustproof net at the ventilation opening in a covering mode.

6. The dustproof structure according to claim 5, wherein the annular frame body comprises a first side plate, a second side plate, a third side plate and a fourth side plate which are vertically connected in sequence, rounded corners are respectively arranged between the first side plate and the third side plate and the fitting plate, and the first shaft body and the second shaft body are respectively located on one sides of the first side plate and the third side plate, which are far away from the ventilation opening.

7. The dustproof structure according to claim 6, further comprising a limiting member, wherein the limiting member is attached to a side of the dustproof mesh covering the vent, which is away from the vent.

8. The dustproof structure according to claim 7, wherein the number of the limiting members is two, each of the two limiting members comprises a first plate and a second plate that are vertically connected to each other, the first plates are respectively connected to the second side plate and the fourth side plate, and the second plates are respectively attached to a side of the dustproof mesh covering the vent, which is away from the vent.

9. A projection incubator, comprising a box body and the dustproof structure of any one of claims 1 to 8, wherein the box body has a mounting cavity and a ventilation opening communicated with the mounting cavity, the mounting cavity is used for mounting a projector, and the dustproof structure is arranged on a wall of the box body and used for filtering air passing through the ventilation opening.

10. The projection incubator of claim 9 wherein the cabinet includes a cabinet body and a door panel; the door plate is arranged on the box body in a turnable manner and surrounds the box body to form the installation cavity, the door plate is provided with the ventilation opening, and the dustproof structure is arranged on the inner side of the door plate.

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