Projection support and projection device

Abstract

The application relates to a projection support and a projection device. The projection support comprises a base, a bearing platform and a power component. The base is configured to mount a screen. The bearing platform is rotationally arranged on the base and configured to mount a projector. The power component is arranged on the base and / or the bearing platform, and configured to drive the bearing platform to rotate relative to the base to a first position and a second position. When the bearing platform is located at the first position, the bearing platform is opened by rotation. When the bearing platform is located at the second position, the bearing platform is folded by rotation. The horizontal distance between the projector and the screen is larger when the bearing platform is located at the first position than when the bearing platform is located at the second position. The projection support can rotate and fold the bearing platform, so that the horizontal distance between the projector and the screen is smaller, thereby making the folded projection support and the projector occupy a smaller horizontal space, and facilitating the storage and transportation of the projection support and the projector.

Description

Technical Field

[0001] This application relates to the field of projector technology, and in particular to a projection stand and a projection device. Background Technology

[0002] Projection stands are used to support screens and projectors. A stand includes a base and a support platform. The base is used to mount the screen, and the support platform is used to mount the projector, allowing the projector to project its image onto the screen. A projection distance needs to be maintained between the projector and the screen to ensure the projected image is displayed completely on the screen, improving the user's viewing experience. However, the distance between the projector and the screen results in a large horizontal space occupied by the projection equipment, making it difficult to store and transport. Utility Model Content

[0003] This application discloses a projection stand and projection device that can be folded to reduce the horizontal space occupied.

[0004] In a first aspect, this application relates to a projection stand, including a base, a support platform, and a power component; the base is configured to mount a screen; the support platform is rotatably mounted on the base and configured to mount a projector; the power component is located on the base and / or the support platform, and is configured to drive the support platform to rotate relative to the base to a first position and a second position; when the support platform is in the first position, the support platform rotates open, and when the support platform is in the second position, the support platform rotates folded; the horizontal distance between the projector and the screen is greater when the support platform is in the first position than when the support platform is in the second position.

[0005] In the aforementioned projection stand, the power component drives the support platform to rotate relative to the base, which can rotate and open the support platform to allow the projector to project the image onto the screen; it can also rotate and fold the support platform to change the angle of the support platform relative to the base, thereby reducing the horizontal distance between the projector and the screen. This results in the folded projection stand and projector occupying less horizontal space, making it convenient for storage and transportation of the projection stand and projector.

[0006] The projection bracket also includes a rotating component that connects the base and the support platform, allowing the support platform to rotate on the base. The direction in which the support platform rotates from the second position to the first position is defined as clockwise. The rotating component is configured to apply resistance during the clockwise rotation of the support platform.

[0007] During the clockwise rotation of the support platform relative to the base, the rotating component can apply a damping force to the support platform to prevent the support platform from rotating and opening rapidly and impacting the support platform, which would cause damage to the projector.

[0008] The base is provided with two first connecting parts at intervals, the bearing platform is provided with a second connecting part, the second connecting part is located between the two first connecting parts, and the opposite ends of the first connecting parts and the second connecting parts are provided with insertion interfaces; the rotating part includes two unidirectional damping shafts, and the opposite ends of each unidirectional damping shaft are respectively inserted into and fixed to the insertion interfaces.

[0009] The first and second connecting parts are connected and fixed to the unidirectional damping shaft via a plug-in interface, making the assembly of the base and the support platform simple and easy to operate. The second connecting part is rotatably located between the two first connecting parts, which prevents the support platform from swaying left and right relative to the base when rotating around the unidirectional damping shaft, thus enabling the support platform to rotate smoothly.

[0010] The first mounting surface is defined as the side of the support platform used to install the projector, and the second mounting surface is defined as the side of the base used to install the screen. When the support platform is in the first position, the first mounting surface is parallel to the second mounting surface. When the support platform is in the second position, the first mounting surface is perpendicular to the second mounting surface.

[0011] When the support platform is in the second position, the support platform and the projector are located above the base plate, and the support platform and the projector occupy the least amount of horizontal space, which can significantly reduce the horizontal space occupied by the projection bracket and the projector after the support platform is folded.

[0012] The base includes a protrusion configured to support the projector when the support platform is in the second position.

[0013] The projector is supported by protrusions to prevent it from moving relative to or detaching from the support platform when the platform is folded due to lack of support underneath.

[0014] The protrusion includes a connected inclined surface and a supporting surface. The inclined surface is located close to the support platform and is inclined relative to the first mounting surface. The inclined surface is configured to guide the projector to move to the supporting surface when the support platform rotates close to the second position. The supporting surface is configured to support the projector.

[0015] The inclined plane is adapted to the path of the projector as it rotates with the support platform, so as to support and guide the projector to move to the support surface, so that the projector is supported when it rotates with the support platform and is not easily moved relative to the support platform by gravity.

[0016] The power component includes two spaced telescopic rods, each with its opposite ends rotatably connected to the support platform and the base. The telescopic rods can extend or retract to drive the support platform to rotate relative to the base.

[0017] When the telescopic rod is shortened, it can drive the load-bearing platform to rotate from the first position to the second position; when the telescopic rod is extended, it can drive the load-bearing platform to rotate from the second position to the first position.

[0018] The base includes a base plate, an extension plate, and a mounting plate connected in sequence. The base plate and the mounting plate are both horizontally arranged, and the extension plate extends vertically and is located between the base plate and the mounting plate. The base plate is configured to rotatably connect to the load-bearing platform, the extension plate is configured to connect to the telescopic rod, and the mounting plate is configured to mount the curtain.

[0019] The extension plate raises the mounting plate relative to the base plate and support platform. When the support platform rotates and opens, the screen is higher than the projector's mounting position, and the horizontal distance between the projector and the screen increases. This allows the base plate to provide sufficient projection distance between the projector and the screen, enabling the screen to display the projected image. When the support platform rotates and folds, the horizontal distance between the projector and the screen decreases, and the area above the base plate can accommodate the projector, preventing interference between the projector and the screen, thus accommodating both the support platform and the projector.

[0020] The protrusion has a receiving space with an opening facing the support platform.

[0021] The storage space can receive and accommodate miscellaneous items through the opening, and can utilize the extra space of the protrusion, which helps to save space.

[0022] Secondly, this application also relates to a projection device, including a projector, a screen, and a projection stand as described in any of the above embodiments.

[0023] In the aforementioned projection equipment, the projector and screen are mounted on a projection bracket, which allows the screen to display the projected image when the support platform of the projection bracket is rotated and opened. When the support platform of the projection bracket is rotated and folded, the horizontal distance between the projector and the screen is reduced, thereby making the folded projection bracket and projector occupy less horizontal space, which facilitates the storage and transportation of the projection bracket and projector. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the projection bracket in one embodiment of the present application when the support platform is in the first position, showing the state when the projector and screen are installed.

[0026] Figure 2 yes Figure 1 A schematic diagram showing the middle support platform in the second position.

[0027] Figure 3 yes Figure 2 The diagram shows the state when the central support platform is in the second position, without the projector and screen installed.

[0028] Figure 4 yes Figure 1 A schematic diagram of the projection support structure.

[0029] Figure 5 yes Figure 4 Exploded view of the projection stand.

[0030] Explanation of main component symbols

[0031] 100. Projector stand; 10. Base; 11. Base plate; 111. First connecting part; 112. Protrusion; 1121. Inclined surface; 1122. Support surface; 1123. Anti-slip strip; 1124. Reception space; 12. Extension plate; 13. Mounting plate; 131. Second mounting surface; 132. Support column; 20. Bearing platform; 21. First mounting surface; 22. Second connecting part; 221. Socket; 23. Grip part; 231. Grip hole; 30. Power component; 31. Telescopic rod; 40. Rotating component; 41. One-way damping shaft; 200. Projection equipment; 210. Projector; 220. Screen; 222. Pad; A. Clockwise direction; B. Counterclockwise direction. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] It should be noted that the concepts of "first" and "second" mentioned in this application are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0034] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0035] Unless otherwise defined, 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 application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0036] Projection stands are used to support screens and projectors. A stand includes a base and a support platform. The base is used to mount the screen, and the support platform is used to mount the projector, allowing the projector to project its image onto the screen. A projection distance needs to be maintained between the projector and the screen to ensure the projected image is displayed completely on the screen, improving the user's viewing experience. However, the distance between the projector and the screen results in a large horizontal space occupied by the projection equipment, making it difficult to store and transport.

[0037] This application relates to a projection stand, including a base, a support platform, and a power component; the base is configured to mount a screen; the support platform is rotatably mounted on the base and configured to mount a projector; the power component is located on the base and / or the support platform, and is configured to drive the support platform to rotate relative to the base to a first position and a second position; when the support platform is in the first position, the support platform rotates open, and when the support platform is in the second position, the support platform rotates folded; the horizontal distance between the projector and the screen is greater when the support platform is in the first position than when the support platform is in the second position.

[0038] In the aforementioned projection stand, the power component drives the support platform to rotate relative to the base, which can rotate and open the support platform to allow the projector to project the image onto the screen; it can also rotate and fold the support platform to change the angle of the support platform relative to the base, thereby reducing the horizontal distance between the projector and the screen. This results in the folded projection stand and projector occupying less horizontal space, making it convenient for storage and transportation of the projection stand and projector.

[0039] The embodiments of this application will be further described below with reference to the accompanying drawings. Unless otherwise specified, the various embodiments in this application can be combined with each other.

[0040] Please see Figure 1 and Figure 2 An embodiment of this application provides a projection device 200, including a projector 210, a screen 220 and a projection bracket 100, wherein the projector 210 and the screen 220 are both mounted on the projection bracket 100.

[0041] In some embodiments, the projection bracket 100 includes a base 10, a support platform 20, and a power member 30. The support platform 20 is rotatably connected to the base 10. The power member 30 is disposed on the base 10 and / or the support platform 20 and drives the support platform 20 to rotate relative to the base 10. The base 10 is configured to mount a screen 220, the support platform 20 is configured to mount a projector 210, and the power member 30 is configured to drive the support platform 20 to rotate relative to the base 10 to a first position and a second position, thereby switching the support platform 20 between two states: rotated open and rotated folded.

[0042] Please see Figure 1 When the support platform 20 is in the first position, the support platform 20 rotates and opens, and the projector 210 can project the image onto the screen 220. The screen 220 can fully display the projected image of the projector 210 for the user to watch.

[0043] Please see Figure 2 When the support platform 20 is in the second position, the support platform 20 rotates and folds, and the angle of the support platform 20 relative to the base 10 changes. The horizontal distance between the projector 210 and the screen 220 is greater when the support platform 20 is in the first position than when the support platform 20 is in the second position. This makes the horizontal distance between the projector 210 and the screen 220 smaller after the support platform 20 is rotated and folded. As a result, the folded projection bracket 100 and the projector 210 occupy less horizontal space, which facilitates the storage and transportation of the projection bracket 100 and the projector 210.

[0044] Please combine Figure 1 and Figure 2 In some embodiments, the screen 220 can be vertically raised or lowered to unfold or retract. When the support platform 20 is in the first position, the screen 220 is vertically raised to display the projected image of the projector 210; when the support platform 20 is in the second position, the screen 220 is vertically lowered to reduce the vertical space occupied by the screen 220, facilitating the storage and transportation of the projection device 200.

[0045] In some embodiments, the projection device 200 further includes a sensor (not shown). When the support platform 20 rotates from a first position to a second position, the sensor detects that the support platform 20 has left the first position and transmits a signal to the controller, causing the controller to control the screen 220 to lower. When the support platform 20 rotates to the second position, the screen 220 retracts. Similarly, when the support platform 20 rotates from the second position to the first position, the sensor detects that the support platform 20 has left the second position and transmits a signal to the controller, causing the controller to control the screen 220 to rise. When the support platform 20 rotates to the first position, the screen 220 unfolds. The raising and lowering of the screen 220 is synchronized with the rotation of the support platform 20, which can improve the user experience. Exemplarily, the sensor is an angle monitor.

[0046] In some embodiments, the projection bracket 100 further includes a rotating member 40, which connects the base 10 and the support platform 20, allowing the support platform 20 to be rotatably mounted on the base 10 via the rotating member 40. The direction in which the support platform 20 rotates from the second position to the first position is defined as clockwise direction A; the rotating member 40 is configured to apply resistance during the rotation of the support platform 20 in clockwise direction A.

[0047] During the rotation of the support platform 20 relative to the base 10 in a clockwise direction A, the rotating component 40 can apply a damping force to the support platform 20 to prevent the support platform 20 from rotating and opening rapidly and impacting the support platform, which would cause damage to the projector 210. It is understood that the support platform includes the ground, a tabletop, or other surfaces.

[0048] The bearing platform 20 rotates counterclockwise B from the first position to the second position. During the rotation of the bearing platform 20 around the base 10 in the counterclockwise direction B, the rotating component 40 does not apply damping force, and the bearing platform 20 can rotate smoothly relative to the base 10.

[0049] In some embodiments, the rotating member 40 is a one-way damped rotating shaft 41 (see Figure 41). Figure 5 When the bearing platform 20 rotates counterclockwise by direction B, the one-way damping shaft 41 can be used as a normal shaft, allowing the bearing platform 20 to rotate relative to the base 10. When the bearing platform 20 rotates counterclockwise by direction B, the one-way damping shaft 41 can increase the friction between the bearing platform 20 and the base 10, thereby applying a damping force to the bearing platform 20.

[0050] The projection stand 100 can be driven independently by the power component 30 to rotate the support platform 20 relative to the base 10; alternatively, the operator can apply force to the support platform 20 with one hand, which, in conjunction with the power component 30, makes it relatively easy to rotate the support platform 20 relative to the base 10. When the operator, in conjunction with the power component 30, rotates the support platform 20 clockwise in direction A, the operator can feel the support platform 20 supporting the projector 210, and there is a sense of resistance during rotation (similar to the rotation of a laptop screen), which enhances the user experience.

[0051] Please see Figure 3 and Figure 4 In some embodiments, the end of the support platform 20 away from the base 10 is curved upward and extends upward to have a grip portion 23. The grip portion 23 is provided with a grip hole 231 so that the operator's hand can pass through the grip hole 231 and apply force to the support platform 20.

[0052] In some embodiments, the base 10 includes a base plate 11, an extension plate 12, and a mounting plate 13 connected in sequence. The base plate 11 is horizontally positioned and rotatably connected to the support platform 20, so that when the support platform 20 is in a first position, the base plate 11 contacts the support platform together with the support platform 20 to support the projector 210 in operation. The mounting plate 13 is horizontally positioned and used to mount the screen 220, allowing the screen 220 to be mounted horizontally for easy display of the projected image and a good viewing experience for the user. The extension plate 12 is located between the base plate 11 and the mounting plate 13 and extends vertically to raise the position of the mounting plate 13 relative to the base plate 11 and the support platform 20.

[0053] Please see Figure 4 In some embodiments, the lower surface of the mounting plate 13 is provided with a support column 132, which is used to contact the support platform together with the base plate 11 to support the mounting plate 13 and prevent the mounting plate 13 from deforming and being damaged. In addition, the lower surface of the curtain 220 is provided with a pad 222, which is used to contact the support platform to support the curtain 220 and prevent the curtain 220 from tipping over.

[0054] Please combine Figure 2 When the support platform 20 is in the second position, the horizontal distance between the projector 210 and the screen 220 decreases, and the area above the base plate 11 can accommodate the projector 210 to prevent interference between the projector 210 and the screen 220, thus accommodating the support platform 20 and the projector 210. Please refer to... Figure 1 When the support platform 20 is in the first position, the screen 220 is higher than the installation position of the projector 210, and the horizontal distance between the projector 210 and the screen 220 is increased, so that the base plate 11 leaves a projection distance between the projector 210 and the screen 220, so that the screen 220 can display the projected image of the projector 210.

[0055] Please combine Figures 1 to 3 In some embodiments, the side of the support platform 20 used to mount the projector 210 is defined as the first mounting surface 21, and the side of the base 10 used to mount the screen 220 is defined as the second mounting surface 131. The first mounting surface 21 is the upper surface of the support platform 20, and the second mounting surface 131 is the upper surface of the mounting plate 13.

[0056] Understandably, the projector 210 is fixed to the first mounting surface 21 by fasteners. The screen 220 is fixed to the second mounting surface 131 by fasteners. The fasteners include screws, bolts, threaded rods, or pins, and this application does not limit the types; those skilled in the art can choose according to the actual situation.

[0057] In some embodiments, when the support platform 20 is in the first position, the first mounting surface 21 is parallel to the second mounting surface 131. When the support platform 20 is in the second position, the first mounting surface 21 is perpendicular to the second mounting surface 131.

[0058] When the support platform 20 is in the second position, the support platform 20 and the projector 210 are located above the base plate 11, and the support platform 20 and the projector 210 occupy the least horizontal space, which can greatly reduce the horizontal space occupied by the support platform 20 and the projection bracket 100 and the projector 210 after folding.

[0059] In other embodiments, when the support platform 20 is in the second position, the second mounting surface 131 may also form an acute angle with the first mounting surface 21.

[0060] Please see Figure 4 and Figure 5 In some embodiments, the base 10 is provided with two first connecting portions 111 spaced apart. The two first connecting portions 111 are spaced apart on the base plate 11 along the width direction of the projection bracket 100. The support platform 20 is provided with a second connecting portion 22. The second connecting portion 22 is located between the two first connecting portions 111 to facilitate the alignment of the base plate 11 and the support platform 20. The opposite ends of the first connecting portions 111 and the second connecting portions 22 are each provided with a plug-in interface 221. The rotating member 40 includes two one-way damping shafts 41, and the opposite ends of each one-way damping shaft 41 are respectively plugged into and fixed to the plug-in interface 221 to enable the base 10 and the support platform 20 to be rotatably connected.

[0061] The first connecting part 111 and the second connecting part 22 are connected and fixed to the one-way damping shaft 41 through the insertion interface 221. The assembly method of the base 10 and the bearing platform 20 is simple and easy to operate. The second connecting part 22 is rotatably located between the two first connecting parts 111, so that the bearing platform 20 is not prone to swaying left and right when it rotates around the one-way damping shaft 41 relative to the base 10, thereby enabling the bearing platform 20 to rotate smoothly.

[0062] In some embodiments, the unidirectional damping shaft 41 is straight and the connector 221 is U-shaped. First, the second connecting part 22 is positioned on the two first connecting parts 111, and the two adjacent connectors 221 correspond to each other. Then, the unidirectional damping shaft 41 is inserted into the connector 221. Finally, the unidirectional damping shaft 41 and the first connecting part 111 or the second connecting part 22 are locked together by fasteners.

[0063] Please see Figures 3 to 5 In some embodiments, the base 10 includes a protrusion 112. The protrusion 112 is fixedly disposed on the base plate 11. Please refer to... Figure 2 The protrusion 112 is configured to support the projector 210 when the support platform 20 is in the second position.

[0064] The projector 210 is supported by the protrusion 112 to prevent the projector 210 from moving relative to the support platform 20 or detaching from the support platform 20 when the support platform 20 is folded due to the lack of support underneath.

[0065] Please see Figures 3 to 5 In some embodiments, the protrusion 112 includes a connected inclined surface 1121 and a supporting surface 1122. The inclined surface 1121 is disposed near the support platform 20 and is inclined relative to the first mounting surface 21. Please refer to... Figure 2 The inclined surface 1121 is configured to guide the projector 210 to the support surface 1122 when the support platform 20 rotates near the second position. The support surface 1122 is configured to support the projector 210.

[0066] The inclined surface 1121 is adapted to the path of the projector 210 as it rotates with the support platform 20, so as to support and guide the projector 210 to move to the support surface 1122, so that the projector 210 is supported when it rotates with the support platform 20, and is not easily moved relative to the support platform 20 by gravity, so that the projector 210 is stably connected to the support platform 20.

[0067] Please see Figures 3 to 5 In some embodiments, the support surface 1122 has anti-slip strips 1123 to increase the friction between the support surface 1122 and the projector 210 when under load, and to prevent the projector 210 from sliding horizontally.

[0068] Please see Figure 4 and Figure 5 In some embodiments, the protrusion 112 has a receiving space 1124 with an opening facing the support platform 20.

[0069] The storage space 1124 can receive and accommodate miscellaneous items (such as remote controls and cables) through the opening, and can utilize the extra space of the protrusion 112, which helps to save space.

[0070] In some embodiments, the power component 30 includes two spaced-apart telescopic rods 31. The two telescopic rods 31 are spaced apart along the width direction of the projection bracket 100 on opposite sides of the projector 210 to provide tension or thrust to smoothly rotate the support platform 20 relative to the base 10. The opposite ends of each telescopic rod 31 are rotatably connected to the extension plate 12 of the support platform 20 and the base 10, respectively. The telescopic rods 31 are capable of extending or retracting to drive the support platform 20 to rotate relative to the base 10. Exemplarily, the telescopic rods 31 include hydraulic rods or hydraulic cylinders.

[0071] When the telescopic rod 31 extends, it can drive the support platform 20 to rotate from the second position to the first position, at which time the telescopic rod 31 is inclined relative to the first mounting surface 21. When the telescopic rod 31 retracts, it can drive the support platform 20 to rotate from the first position to the second position, at which time the telescopic rod 31 is horizontally positioned.

[0072] In some embodiments, the power component 30 includes a motor disposed within the receiving space 1124. The rotating component 40 is a rotating shaft, which is fixedly connected to the support platform 20 and rotatably connected to the base 10. The motor is coaxially connected to the rotating shaft to drive the support platform 20 to rotate relative to the base 10.

[0073] The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A projection stand, characterized in that, include: The base is configured for mounting the screen. A support platform is rotatably mounted on the base and configured to mount a projector; A power component, disposed on the base and / or the support platform, is configured to drive the support platform to rotate relative to the base to a first position and a second position; When the support platform is in the first position, the support platform rotates and opens; when the support platform is in the second position, the support platform rotates and folds. The horizontal distance between the projector and the screen is greater when the supporting platform is in the first position than when the supporting platform is in the second position.

2. The projection bracket according to claim 1, characterized in that, The projection bracket also includes a rotating component, which connects the base and the support platform, allowing the support platform to be rotatably mounted on the base. The direction in which the support platform rotates from the second position toward the first position is defined as clockwise. The rotating component is configured to apply resistance as the support platform rotates in the clockwise direction.

3. The projection bracket according to claim 2, characterized in that, The base is provided with two first connecting parts spaced apart, and the bearing platform is provided with a second connecting part. The second connecting part is located between the two first connecting parts, and each of the first connecting parts and the second connecting part is provided with a plug-in interface at one end facing each other. The rotating component includes two unidirectional damping shafts, with each unidirectional damping shaft having its opposite ends inserted into and fixed to the insertion interface.

4. The projection bracket according to any one of claims 1 to 3, characterized in that, The side of the support platform used to mount the projector is defined as the first mounting surface, and the side of the base used to mount the screen is defined as the second mounting surface; When the support platform is located in the first position, the first mounting surface is parallel to the second mounting surface; When the support platform is in the second position, the first mounting surface is perpendicular to the second mounting surface.

5. The projection bracket according to claim 4, characterized in that, The base includes a protrusion configured to support the projector when the support platform is in the second position.

6. The projection bracket according to claim 5, characterized in that, The protrusion includes a connected inclined surface and a supporting surface. The inclined surface is disposed close to the support platform and is inclined relative to the first mounting surface. The inclined surface is configured to guide the projector to the supporting surface when the support platform rotates close to the second position. The supporting surface is configured to support the projector.

7. The projection bracket according to any one of claims 1 to 3, characterized in that, The power component includes two telescopic rods spaced apart, with the opposite ends of each telescopic rod rotatably connected to the support platform and the base, respectively. The telescopic rod can extend or shorten to drive the supporting platform to rotate relative to the base.

8. The projection bracket according to claim 7, characterized in that, The base includes a base plate, an extension plate, and a mounting plate connected in sequence. The base plate and the mounting plate are both horizontally arranged, and the extension plate extends vertically and is located between the base plate and the mounting plate. The base plate is configured to rotatably connect to the support platform, the extension plate is configured to connect to the telescopic rod, and the mounting plate is configured to mount the curtain.

9. The projection bracket according to claim 6, characterized in that, The protrusion has a receiving space, the receiving space has an opening, and the opening faces the supporting platform.

10. A projection device, characterized in that, It includes a projector, a screen, and a projection bracket as described in any one of claims 1 to 9, wherein the projector and the screen are both mounted on the projection bracket.

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