Intelligent projection curtain device

Abstract

The utility model relates to an intelligent projection curtain device, and belongs to the technical field of display equipment. The intelligent projection curtain device comprises a shell, wherein an opening is formed in one side of the shell; the curtain assembly comprises a telescopic part and an electric projection mechanism, the telescopic part is arranged in the shell in a sliding mode, the electric projection mechanism is arranged on the telescopic part, the telescopic part is provided with a projection opening for the electric projection mechanism to fold and unfold a curtain, and the projection opening is arranged towards the horizontal plane; the throwing opening can be exposed out of the outer side of the shell through the opening; and the driving assembly is used for driving the telescopic part to do reciprocating motion along the central axis of the opening. According to the scheme provided by the utility model, the hidden structural design is adopted, when the electric projection curtain is used, the electric projection curtain can be folded and unfolded through the projection port, and the electric projection curtain has the characteristics of reasonable layout and simple structure.

Description

Technical Field

[0001] The utility model relates to the technical field of display devices, in particular to an intelligent projection screen device. Background Art

[0002] The projection screen is used in combination with a projector. The projector projects the received video signal onto the projection screen, which is convenient for multiple people to watch together. The projection screen is usually applied to occasions such as movies, offices, home theaters, teaching, and large conferences. Different projection screens are selected for different spaces. For example, a wide viewing angle and low gain screen is suitable for occasions with a large number of viewers or horizontal viewing, while a narrow viewing angle and high gain screen is suitable for viewing in a long and narrow space, which helps to improve the contrast of the screen, increase the image gray level and make the color vivid, and enhance the visibility of the image.

[0003] In the prior art, in order to facilitate the projection of images, the wall-mounted projection screen is generally installed on the roof, wall or hidden in the ceiling. However, the electric projection mechanism in the existing wall-mounted projection screen is generally external, and it is easy to accumulate dust after a long time of placement, which reduces the projection quality of the projection screen and affects the user experience. Summary of the Utility Model

[0004] To overcome the problems existing in the related art, the utility model provides an intelligent projection screen device, which adopts a hidden structure design. When in use, the electric projection screen can realize the function of retracting and deploying the screen through the delivery port, and has the characteristics of reasonable layout and simple structure.

[0005] In the first aspect of the utility model, an intelligent projection screen device is provided, which includes a housing, and one side of the housing is provided with an opening;

[0006] A screen assembly, including a telescopic part and an electric projection mechanism. The telescopic part is slidably arranged in the housing, the electric projection mechanism is arranged on the telescopic part, the telescopic part has a delivery port for the electric projection mechanism to retract and deploy the screen, the delivery port is arranged towards the horizontal plane, and the delivery port can be exposed outside the housing through the opening;

[0007] A driving component, which is used to drive the telescopic part to make a reciprocating motion along the central axis of the opening.

[0008] In a possible implementation of the above first aspect, the screen projection device further includes a control system and a detector;

[0009] Both the detector and the driving component are connected to the control system. The detector is used to collect the displacement information of the telescopic part, and the control system starts or closes the driving component according to the displacement information.

[0010] In a possible implementation of the above first aspect, the control system includes a control box, a remote controller, and a synchronization controller;

[0011] A control unit is provided in the control box and is respectively connected to the remote controller, the synchronization controller, and the electric projection mechanism;

[0012] The synchronization controller is connected to the drive assembly;

[0013] The remote controller is used to send processing information to the control unit, and the control unit is used to start or stop the synchronization controller and the electric projection mechanism according to the processing information.

[0014] In a possible implementation of the above first aspect, the detector includes one of an infrared sensor, a photoelectric sensor, and a radio frequency sensor.

[0015] In a possible implementation of the above first aspect, the telescopic part includes a panel and a frame;

[0016] The panel is vertically arranged on the frame and corresponds to the opening;

[0017] The frame is slidably arranged in the housing, the bottom of the frame is open, and the electric projection mechanism is arranged in the frame;

[0018] The detector is arranged on the frame, and the detection end of the detector is arranged opposite to the panel.

[0019] In a possible implementation of the above first aspect, the frame includes a top plate and at least two support plates. The top plate is vertically arranged on the panel, the at least two support plates are vertically arranged on the top plate, and the electric projection mechanism is located between the panel and the support plates.

[0020] In a possible implementation of the above first aspect, a notch groove is provided at one end of the support plate away from the top plate, and the detector is accommodated on the notch groove.

[0021] In a possible implementation of the above first aspect, the drive assembly includes at least two push rod motors, a bracket, and a connecting seat. The brackets are respectively arranged on both sides of the top wall of the housing, the push rod motors are arranged on the brackets, the connecting seat is fixedly arranged on the telescopic part, the piston rod of the push rod motor is tightly fitted with the connecting seat through a pin, and the axis of the piston rod is parallel to the central axis of the opening.

[0022] In a possible implementation of the above first aspect, it further includes a slide rail assembly. The slide rail assembly includes a moving slide rail and a fixed slide rail that matches the moving slide rail. The fixed slide rail is disposed on the inner side walls at both ends of the housing along the central axis direction of the opening, and the moving slide rail is disposed on the outer side walls at both ends of the telescopic portion.

[0023] In a possible implementation of the above first aspect, the electric projection mechanism further includes a rotating shaft, a transmission gear, and a motor;

[0024] The screen is wound around the rotating shaft. The rotating shaft is rotatably disposed in the housing. The transmission gear is sleeved on the rotating shaft, and the motor is used to drive the transmission gear to rotate.

[0025] The technical solution provided by the present invention may include the following beneficial effects:

[0026] The intelligent projection screen device provided by the present invention includes a housing, a screen assembly, and a driving assembly. Among them, the telescopic portion in the screen assembly is slidably matched with the housing, and the projection opening can be exposed outside the housing through the opening, so that the electric projection mechanism can realize the retraction and extension of the screen. When the user needs to use the screen to watch an image, the driving assembly can drive the telescopic portion to move out of the housing, so that the projection opening of the telescopic portion is exposed from the opening of the housing, so that the electric projection mechanism can enter the projection area to perform the retraction and extension work of the screen. When the user closes the device, the electric projection mechanism retracts the screen, and then the driving assembly drives the telescopic portion to move into the housing, hiding the electric projection mechanism in the housing to avoid the problem of dust accumulation on the electric projection mechanism. Description of the Drawings

[0027] By describing the exemplary embodiments of the present invention in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the present invention will become more obvious. Among them, in the exemplary embodiments of the present invention, the same reference numerals generally represent the same components.

[0028] Figure 1 is a schematic diagram of the overall structure of the intelligent projection screen device shown in Embodiment 1 of the present invention;

[0029] Figure 2 is another schematic diagram of the intelligent projection screen device shown in Embodiment 1 of the present invention;

[0030] Figure 3 is a schematic diagram of the structure of the housing shown in Embodiment 1 of the present invention;

[0031] Figure 4 is another schematic diagram of the intelligent projection screen device shown in Embodiment 1 of the present invention;

[0032] Figure 5 It is a schematic structural diagram of the control system shown in Embodiment 2 of the present utility model;

[0033] Figure 6 It is another schematic structural diagram of the control system shown in Embodiment 2 of the present utility model;

[0034] Figure 7 It is a schematic structural diagram of the telescopic part shown in Embodiment 3 of the present utility model;

[0035] Figure 8 It is a schematic structural diagram of the intelligent projection screen device shown in Embodiment 3 of the present utility model when it is opened;

[0036] Figure 9 It is a schematic structural diagram of the intelligent projection screen device shown in Embodiment 3 of the present utility model when it is closed;

[0037] Figure 10 It is a top view of the intelligent projection screen device shown in Embodiment 3 of the present utility model when it is opened;

[0038] Figure 11 It is Figure 9 a partial enlarged schematic diagram at position A in Description of the drawings:

[0040] 1. Housing; 10. Opening; 10a. Central axis;

[0041] 2. Curtain assembly; 20. Telescopic part; 200. Panel; 201. Frame; 201a. Top plate; 201b. Support plate; 201c. Notch groove; 21. Electric projection mechanism; 210. Curtain;

[0042] 3. Driving assembly; 30. Push rod motor; 31. Bracket; 32. Connecting seat; 33. Plug; 4. Control system; 40. Control box; 41. Remote control; 42. Synchronization controller;

[0043] 5. Detector;

[0044] 6. Slide rail assembly; 60. Moving slide rail; 61. Fixed slide rail. Detailed implementation manners

[0045] The preferred embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present utility model more thorough and complete, and to fully convey the scope of the present utility model to those skilled in the art.

[0046] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0047] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0048] In the prior art, the electric projection mechanism in the wall-mounted curtain is generally external. It is easy to accumulate dust during long-term idle, reducing the projection quality of the curtain and affecting the user experience.

[0049] In view of the above problems, the present utility model provides an intelligent projection curtain device, which adopts a hidden structure design. When in use, the electric projection curtain can realize the function of retracting and deploying the curtain through the projection opening, and has the characteristics of reasonable layout and simple structure.

[0050] The technical solutions of each embodiment of the present utility model will be described in detail below with reference to the drawings.

[0051] In the actual application of each embodiment of the present utility model, the housing 1 can be used to be fixed on fixed structures such as walls and ceilings. When the intelligent projection curtain device is in use, the housing 1 is installed on a wall or other supports, such as: indoor support columns, furniture, wall decorative panels and other objects that can play a supporting role. Taking the housing 1 installed on the wall as an example, each embodiment of the present utility model will be described in detail.

[0052] Embodiment 1

[0053] Figure 1 is the overall structural schematic diagram of the intelligent projection curtain device shown in Embodiment 1 of the present utility model;

[0054] Figure 2 is the structural schematic diagram of the intelligent projection curtain device shown in Embodiment 1 of the present utility model;

[0055] Figure 3 It is a schematic structural diagram of the housing 1 shown in Embodiment 1 of the present utility model;

[0056] Figure 4 It is another schematic structural diagram of the intelligent projection screen device shown in Embodiment 1 of the present utility model.

[0057] Please refer to Figures 1 to 4 , an intelligent projection screen device provided by Embodiment 1 of the present utility model, includes a housing 1, and an opening 10 is provided on one side of the housing 1;

[0058] A curtain assembly 2, including a telescopic part 20 and an electric projection mechanism 21, the telescopic part 20 is slidably arranged in the housing 1, the electric projection mechanism 21 is arranged on the telescopic part 20, the telescopic part 20 has a placement opening for the electric projection mechanism 21 to retract and deploy the curtain 210, the placement opening is arranged facing the horizontal plane, and the placement opening can be exposed outside the housing 1 through the opening 10;

[0059] A driving assembly 3, used to drive the telescopic part 20 to reciprocate along the central axis 10a of the opening 10.

[0060] Specifically, the telescopic part 20 is installed in the housing 1 and can move along the central axis 10a of the opening 10 in the housing 1, and can be moved out and in under the drive of the driving assembly 3. When the user needs to project an image on the curtain 210, after the driving assembly 3 drives the telescopic part 20 to move out of the housing 1, the placement opening of the telescopic part 20 can be exposed at the opening 10 of the housing 1, so that the electric projection mechanism 21 can deploy the curtain 210 through the placement opening to realize the projection function of the device. When the user does not need to use the device, first the electric projection mechanism 21 retracts the curtain 210. When the curtain 210 is completely retracted, the driving assembly 3 can drive the telescopic part 20 to move into the housing 1, so that the electric projection mechanism 21 can be completely hidden in the housing 1. At this time, the state of the intelligent projection screen 210 device is as Figure 4 shown. In this state, the electric projection mechanism 21 is completely located inside the housing 1, and the placement opening is completely blocked by the housing 1.

[0061] It should be noted that Figures 1 to 4 the housing 1 shown, this is only one of the implementation manners involved in the housing structure adapted to the cuboid shown in Figure 1 shown. In practical applications, the structure of the housing 1 can also be set in other structural forms. For example, a cylindrical body, a regular hexahedron, and an irregular-shaped housing structure can also realize the functions of moving the telescopic part 20 out and in, and the placement opening being exposed outside the housing 1. Therefore, Figure 1 the housing 1 shown should not be understood as the only implementation form of Embodiment 1 of the present utility model.

[0062] In the intelligent projection screen device provided in the present embodiment 1, when the user needs to use the screen 210 to watch images, after starting the device, the driving component 3 can drive the telescopic part 20 to move out of the housing 1, so that the insertion port of the telescopic part 20 is exposed from the opening 10 of the housing 1, so that the electric projection mechanism 21 enters the projection area to perform the work of retracting and releasing the screen 210. When the user turns off the device, the electric projection mechanism 21 retracts the screen 210, and then the driving component 3 drives the telescopic part 20 to move into the housing 1, hiding the electric projection mechanism 21 in the housing 1, and avoiding the problem of dust accumulation on the electric projection mechanism 21.

[0063] Example 2

[0064] In order to facilitate the coordination of the movement between the drive assembly 3 and the electric projection mechanism 21 in unfolding and folding, the present utility model embodiment 2 also designs a corresponding structure. On the basis of the above embodiment 1, please refer to Figure 6 and Figure 7 , the intelligent projection screen device of embodiment 2 of the utility model further includes a control system 4 and a detector 5;

[0065] The detector 5 and the driving component 3 are both connected to the control system 4. The detector 5 is used to collect displacement information of the telescopic part 20. The control system 4 starts or stops the driving component 3 according to the displacement information.

[0066] In specific implementation, the control system 4 can be connected to an external network, a smart terminal and an external controller. The control system 4 can also perform corresponding operations through a remote control provided by the electric projection mechanism 21, such as a radio frequency remote control. The above two methods are described in detail below.

[0067] In one achievable manner, the control system 4 performs intelligent control through external networks, smart speakers, smart terminals and other devices, and its working process is as follows:

[0068] At startup, a command is issued through the smart speaker (open the screen) or a mobile phone APP to open the electric projection mechanism 21. After the control system 4 receives the opening command, the control system 4 controls the driving component 3 to drive the telescopic part 20 to move along the central axis 10a of the opening 10. Under the control of the control system 4, the driving component 3 moves the telescopic part 20 out of the shell 1 for a certain distance and ensures that the delivery port is exposed at the opening 10. At this time, the control system 4 starts the electric projection mechanism 21, and the screen 210 descends. During the descent of the screen 210, the detector 5 is triggered, and the detector 5 feeds back the monitored displacement information to the control system 4. The control system 4 locks the working state of the driving component 3 according to the displacement information to ensure that the screen 210 does not change during the displacement information, thereby avoiding the situation where the telescopic part 20 moves into the shell 1 and is damaged.

[0069] When closing, a command is issued through the smart speaker (open the screen) or the mobile phone APP to close the electric projection mechanism 21. After the control system 4 receives the closing command, the control system 4 first controls the electric projection mechanism 21 to retract the screen 210. During the rising process of the screen 210, the detector 5 feeds back the monitored displacement information to the control system 4. The control system 4 locks the working state of the drive component 3 according to the displacement information. When the screen 210 is completely retracted, the displacement information monitored by the detector 5 changes. The control system 4 controls the drive component 3 to drive the telescopic part 20 to move along the central axis 10a of the opening 10 according to the current displacement information, and retracts the electric projection mechanism 21 into the shell 1.

[0070] In another feasible method, the control system 4 performs automatic control according to the external remote control 41 of the electric projection mechanism 21. The difference between its working process and intelligent control is that the control system 4 does not need to receive external information or control commands, and the same operation can be achieved through the controller of the electric projection mechanism 21, such as a radio frequency remote control.

[0071] In one possible implementation, see Figure 5 , the control system 4 of the above-mentioned intelligent projection screen device includes a control box 40, a remote controller 41 and a synchronization controller 42;

[0072] The control box 40 is provided with a control unit connected to the remote controller 41, the synchronous controller 42 and the electric projection mechanism 21 respectively;

[0073] The synchronous controller 42 is connected to the driving component 3;

[0074] The remote controller 41 is used to send processing information to the control unit, and the control unit is used to start or shut down the synchronous controller 42 and the electric projection mechanism 21 according to the processing information.

[0075] In a possible implementation, the detector 5 of the above intelligent projection screen device includes one of an infrared sensor, a photoelectric sensor, and a radio frequency sensor.

[0076] During specific implementation, the detector 5 can select an infrared sensor.

[0077] During specific implementation, on the one hand, the intelligent projection screen device can be intelligently controlled through devices such as the user's intelligent terminal. On the other hand, it can be independently used through automatic control without the need to be connected to external devices. The unfolding or retraction of the screen 210 is realized through the infrared sensor and the control system 4 arranged inside the device, eliminating the need for network support. Even if the projector loses network during the projection process, the driving component 3 will not perform the operation of moving out or moving in, having higher reliability and stability. Further, when the electric projection mechanism 21 and the driving component 3 are controlled through automatic control, the intelligent projection screen device can carry wall-mounted electric projection mechanisms 21 of various different size specifications, making it adaptable to the application requirements of teaching, large conferences, and other occasions.

[0078] Embodiment 3

[0079] In order to enable the screen 210 described in Embodiment 1 and Embodiment 2 to achieve various different installation environments and application requirements, Embodiment 3 of the present utility model also designs a corresponding screen assembly 2. On the basis of the above Embodiment 1 and Embodiment 2, please refer to Figures 7 to 11 and in combination with Figure 1 The telescopic part 20 of the intelligent projection screen device in Embodiment 3 of the present utility model includes a panel 200 and a frame 201;

[0080] The panel 200 is vertically arranged on the frame 201 and corresponds to the opening 10;

[0081] The frame 201 is slidably arranged in the housing 10. The bottom of the frame 201 is open, and the electric projection mechanism 21 is arranged in the frame 201;

[0082] The detector 5 is arranged on the frame 201, and the detection end of the detector 5 is arranged opposite to the panel 200. The panel 200 corresponds to the opening 100, so that when the intelligent projection screen device is closed, the panel 200 covers the opening 10, improving the overall sealing performance of the device. The bottom of the frame 201 is open, thus forming a projection opening for the electric projection mechanism 21.

[0083] In specific implementation, the housing 1 and the frame 201 can be arranged in the shape of a cuboid structure. On the one hand, the cuboid-structured housing 1 is convenient for installation in fixed structures such as walls. On the other hand, it can ensure the matching degree with the frame 201 and improve the space utilization rate.

[0084] In a possible implementation scheme, the frame 201 includes a top plate 201a and at least two support plates 201b. The top plate 201a is vertically arranged on the panel 200, and the at least two support plates 201b are vertically arranged on the top plate 201a. The electric projection mechanism 21 is located between the panel 200 and the support plates 201b.

[0085] In specific implementation, the number of support plates 201b connected to the top plate 201a can be two. One end of the telescopic part 20 is connected to the top plate 201a, and the other end abuts against the bottom wall of the housing 1, so as to ensure that the panel 200 connected to the top plate 201a has sufficient connection stability and firmness, ensure that the telescopic part 20 is not easily displaced under the drive of the drive assembly 3, and ensure the smooth operation of the device. Of course, the number of telescopic parts 20 provided on the top plate 201a is not limited to the above situation, as long as it can ensure that a stable frame 201 can be formed between the top plate 201a and the support plates 201b and a chamber that can accommodate the electric projection mechanism 21, and its specific number can be determined according to the actual situation.

[0086] The electric projection mechanism 21 can be arranged on the top plate 201a or on the support plate 201b close to the panel 200. In the above two ways, under the drive of the drive assembly 3, the unfolding and retracting of the curtain 210 are both realized.

[0087] Specifically, the housing 1 and the telescopic part 20 can be made of metal materials or plastic materials. In a preferred implementation scheme, the housing 1 and the telescopic part 20 are made of plastic. The two can be integrally formed by an injection molding process at one time. And plastic has the characteristic of light weight, which can reduce the movement resistance of the telescopic part 20 when it moves out or in, and ensure the smoothness of the drive assembly 3 during the driving process.

[0088] In a possible implementation scheme, please refer to Figure 6, a notch groove 201c is provided at one end of the support plate 201b of the intelligent projection screen device away from the top plate 201a, and the detector 5 is accommodated on the notch groove 201c. Specifically, when an infrared sensor is used to detect the displacement information of the detection panel 200 or the curtain 210, the infrared sensor is arranged in the notch groove 201c. Since the notch groove 201c has a certain depth, it is convenient to adjust the relative position of the infrared sensor, and thus it can adapt to electric projection mechanisms 21 with different specification parameters. In this setting, it is possible to avoid the wires connecting the control box 40, the remote controller 41, the synchronous controller 42, and the electric projection mechanism 21 from interfering with the detection end of the infrared sensor, ensuring that during the movement of the telescopic part 20, the wires will not touch the detection end of the infrared sensor, resulting in abnormal control.

[0089] In a possible implementation, the driving assembly 3 of the above intelligent projection screen device includes at least two push rod motors 30, a bracket 31, and a connecting seat 32. The brackets 31 are respectively arranged on both sides of the top wall of the housing 1. The push rod motors 30 are arranged on the brackets 31. The connecting seat 32 is fixedly arranged on the telescopic part 20. The piston rod of the push rod motor 30 and the connecting seat 32 are tightly fitted through a pin 33, and the axis of the piston rod is parallel to the central axis 10a of the opening 10.

[0090] During specific implementation, push rod motors 30 are arranged on both sides of the top wall of the housing 1. By setting the synchronous controller 42, under the drive of the control unit, the synchronous controller 42 simultaneously starts the two push rod motors 30, enabling the panel 200 to smoothly move away from the opening 10 of the housing 1 and ensuring the overall stability and reliability of the device.

[0091] Specifically, when the user needs to replace the electric projection mechanism 21, the pin 33 is pulled out, and the panel 200 and the push rod motor 30 can be separated, so that the corresponding electric projection mechanism 21 can be quickly replaced.

[0092] In practical applications, the space inside the housing 1 is relatively narrow. For the convenience of assembly and later maintenance, the connection between the push rod motor 30 and the bracket 31 can also be fixed by the pin 33.

[0093] In another feasible solution, the driving assembly 3 can also be arranged in the form of a motor, a transmission gear, and a transmission rack. Specifically, the motor is installed on the inner side wall of the housing 1. The transmission gear is connected to the rotating shaft of the motor. The transmission gear is installed along the central axis 10a of the opening 10 on the frame 201. The transmission rack and the transmission gear are meshed. The control system 4 can control the rotation amplitude of the motor through a preset value set inside, so as to ensure the displacement of the transmission gear.

[0094] In a possible implementation, for the slide rail assembly 6 of the above-mentioned intelligent projection screen device, the slide rail assembly 6 includes a moving slide rail 60 and a fixed slide rail 61 that matches the moving slide rail 60. The fixed slide rail 61 is disposed on the inner side wall of the housing 1 along the central axis 10a direction of the opening 10, and the moving slide rail 60 is disposed on the outer side wall of the telescopic portion 20.

[0095] In a possible implementation, the electric projection mechanism 21 of the above-mentioned intelligent projection screen device further includes a rotating shaft (not shown), a transmission gear (not shown), and a motor (not shown);

[0096] The curtain 210 is wound around the rotating shaft. The rotating shaft is rotatably disposed within the housing 1. The transmission gear is sleeved on the rotating shaft, and the motor is used to drive the transmission gear to rotate.

[0097] Exemplarily, the motor can be a stepper motor. Specifically, a stepper motor is a motor that converts an electrical pulse signal into a corresponding angular displacement or linear displacement. For each input pulse signal, the rotor rotates an angle or moves forward one step. Its output angular displacement or linear displacement is proportional to the number of input pulses, and the rotational speed is proportional to the pulse frequency. Therefore, the stepper motor can precisely control the rotation amplitude of the transmission gear, and thus can accurately position the unfolding amplitude of the curtain. During the process of driving the rotating shaft to rotate around its own axis, the stepper motor can control the rotation amount of the stepper motor according to the diameter of the rotating shaft and the thickness of the curtain 210 to achieve the purpose of fully unfolding the curtain 210.

[0098] Specifically, based on the intelligent projection screen devices provided by various embodiments of the present invention, the present application also provides application examples of intelligent control and automatic control.

[0099] 1. Working process of intelligent control:

[0100] Startup process:

[0101] 1.1. Send a command to turn on the electric projection mechanism 21 through a smart speaker (to open the curtain) or a mobile phone APP. After the remote control 41 and the control box 40 receive the turn-on command, while the remote control 41 starts the electric projection mechanism 21, the control box 40 feeds back a signal to the synchronization controller 42;

[0102] 1.2. The control box 40 feeds back a signal to the motor synchronization controller 42 through a serial cable. After the motor synchronization controller 42 receives the turn-on signal from the control box 40, it controls the left and right push rod motors 30 to start and extend synchronously, and pushes the cartridge forward. The electric projection mechanism 21 starts simultaneously, and the curtain descends;

[0103] 1.3. When the curtain is descending, the infrared sensor is triggered, and the infrared sensor feeds back a signal to the motor synchronization controller 42, locking the left and right push rod motors 30 in the extended state, ensuring that the push rod motors 30 are always in the extended state when the curtain does not leave the sensing area of ​​the infrared sensor;

[0104] Closing process:

[0105] 1.4. Turn off the electric projection mechanism 21 through the smart speaker (turn off the screen) or the mobile phone APP. After the remote control 41 and the control box 40 receive the shutdown command, the smart controller turns off the electric projection mechanism 21, and the electric projection mechanism 21 starts to rise and recover;

[0106] 1.5. After receiving the closing command, the control box 40 feeds back a signal to the synchronous motor control box 40; however, when the curtain is not out of the sensing area of ​​the infrared sensor during the recovery process, the infrared sensor is in a triggered state, and the synchronous motor control box 40 controls the push rod motor 30 to remain in the extended state;

[0107] 1.6. After the curtain is retracted and out of the sensing area of ​​the infrared sensor, the infrared sensor feeds back a signal to the motor synchronization controller 42. The motor synchronization controller 42 controls the left and right push rod motors 30 to retract, driving the drawer box to retract together and keep it in the closed state until a new opening command is received.

[0108] 2. Working process of automatic control:

[0109] During automatic control, the remote controller 41 and the control box 40 are not needed, but the radio frequency remote controller 41 provided by the electric projection mechanism 21 is needed;

[0110] Startup process:

[0111] 2.1. The electric projection mechanism 21 is controlled to start and descend by the radio frequency remote controller 41 provided with the electric projection mechanism 21. During the descent process, when the bottom of the screen reaches the sensing area of ​​the infrared sensor, the infrared sensor is triggered;

[0112] 2.2. After the infrared sensor is triggered, the infrared sensor feeds back a motor extension signal to the motor synchronization controller 42. When the motor synchronization controller 42 receives the extension signal, it controls the left and right push rod motors 30 to extend and push the drawer box forward;

[0113] 2.3. When the curtain is not out of the sensing area of ​​the infrared sensor, the infrared sensor keeps sending the motor extension signal to the synchronous controller 42, locking the left and right push rod motors 30 in the extended state, ensuring that the push rod motors 30 are always in the extended state when the curtain is not out of the sensing area of ​​the infrared sensor;

[0114] Closing process:

[0115] 2.4. The electric projection mechanism 21 is controlled to start and rise by the radio frequency remote controller 41 provided by the electric projection mechanism 21. During the rising process, when the screen does not leave the sensing area of ​​the infrared sensor, the motor synchronization controller 42 controls the left and right push rod motors 30 to keep extending;

[0116] 2.5. When the curtain rises to the point where the bottom of the curtain is out of the sensing area of ​​the infrared sensor, the infrared sensor is in an untriggered state, and the infrared sensor feeds back a motor retraction signal to the motor synchronization controller 42 and releases the instruction to keep the push rod motor 30 in the extended state;

[0117] 2.6. After receiving the instruction to retract and release the extended state, the motor synchronous controller 42 controls the left and right push rod motors 30 to retract and drive the drawer box to retract together. When the infrared sensor is not triggered, the motor synchronous controller 42 controls the left and right push rod motors 30 to remain in the closed state.

[0118] Unless otherwise specifically stated, the relative arrangement of the components and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings. The above embodiments of the utility model have been described, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Without departing from the scope and spirit of the illustrated embodiments, many modifications and changes are obvious to ordinary technicians in the technical field. The terms used herein are selected to best explain the principles of the embodiments, practical applications or improvements to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An intelligent projection screen device, characterized in that: include: A shell, wherein one side of the shell is provided with an opening; The screen assembly comprises a telescopic part and an electric projection mechanism, wherein the telescopic part is slidably arranged in the shell, the electric projection mechanism is arranged on the telescopic part, the telescopic part has a delivery port for the electric projection mechanism to retract and release the screen, the delivery port is arranged toward a horizontal plane, and the delivery port can be exposed to the outside of the shell through the opening; The driving assembly is used to drive the telescopic part to perform reciprocating motion along the central axis of the opening.

2. The intelligent projection screen device according to claim 1, characterized in that: Also includes control systems and detectors; The detector and the driving component are both connected to the control system. The detector is used to collect displacement information of the telescopic part. The control system starts or shuts down the driving component according to the displacement information.

3. The intelligent projection screen device according to claim 2, characterized in that: The control system includes a control box, a remote controller and a synchronization controller; The control box is provided with a control unit connected to the remote controller, the synchronous controller and the electric projection mechanism respectively; The synchronous controller is connected to the driving component; The remote controller is used to send processing information to the control unit, and the control unit is used to start or shut down the synchronous controller and the electric projection mechanism according to the processing information.

4. The intelligent projection screen device according to claim 3, characterized in that: The detector includes one of an infrared sensor, a photoelectric sensor and a radio frequency sensor.

5. The intelligent projection screen device according to claim 2, characterized in that: The telescopic part includes a panel and a frame; The panel is vertically arranged on the frame and corresponds to the opening; The frame body is slidably disposed in the housing, the bottom of the frame body is open, and the electric projection mechanism is disposed in the frame body; The detector is arranged on the frame, and a detection end of the detector is arranged opposite to the panel.

6. The intelligent projection screen device according to claim 5, characterized in that: The frame includes a top plate and at least two supporting plates, the top plate is vertically arranged on the panel, the at least two supporting plates are vertically arranged on the top plate, and the electric projection mechanism is located between the panel and the supporting plates.

7. The intelligent projection screen device according to claim 6, characterized in that: A notch is provided at one end of the support plate away from the top plate, and the detector is accommodated in the notch.

8. The intelligent projection screen device according to claim 2, characterized in that: The driving assembly includes at least two push rod motors, a bracket and a connecting seat, the brackets are respectively arranged on both sides of the top wall of the shell, the push rod motor is arranged on the brackets, and the connecting seat is fixed on the telescopic part. The piston rod of the push rod motor is fastened to the connecting seat by a pin, and the axis of the piston rod is parallel to the central axis of the opening.

9. The intelligent projection screen device according to claim 2, characterized in that: It also includes a slide rail assembly, which includes a movable slide rail and a fixed slide rail matching the movable slide rail. The fixed slide rail is arranged on the inner side walls at both ends of the shell along the central axis direction of the opening, and the movable slide rail is arranged on the outer side walls at both ends of the telescopic part.

10. The intelligent projection screen device according to claim 2, characterized in that: The electric projection mechanism also includes a rotating shaft, a transmission gear and a motor; The curtain is wound on the rotating shaft, the rotating shaft is rotatably arranged in the shell, the transmission gear is sleeved on the rotating shaft, and the motor is used to drive the transmission gear to rotate.

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