Projection device

Abstract

The utility model provides a projection device. The projection device comprises a main body; the cover body is movably connected with the main body; the light-emitting assembly can emit a light signal; the film assembly is arranged on a transmission path of the light emitting signal; the imaging assembly is used for imaging an optical signal penetrating through the film assembly, and when the cover body covers the main body, the imaging assembly is arranged on the side, away from the light-emitting assembly, of the film assembly; wherein the light-emitting assembly and the film assembly are installed on the main body, and the imaging assembly is installed on the cover body. The use convenience of the projection device can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of projection technology, in particular to a projection device. BACKGROUND

[0002] The projection device is widely used in various scenes, such as home theater, stage performance, car lighting, etc., to project images or text onto the ground, wall or other surfaces. However, the traditional projection device usually integrates all components in a fixed shell, when the internal components such as the film component need to be maintained, cleaned or replaced, the user often needs to disassemble the entire projection device, which is cumbersome and time-consuming, increasing the use cost and difficulty. CONTENT OF THE UTILITY MODEL

[0003] The embodiment of the present application provides a projection device, which can improve the use convenience of the projection device.

[0004] The present application provides a projection device, which comprises:

[0005] a main body;

[0006] a cover body movably connected with the main body;

[0007] a light emitting component capable of emitting a light signal;

[0008] a film component arranged on a transmission path of the light signal;

[0009] an imaging component for imaging the light signal transmitted through the film component, the imaging component being arranged on a side of the film component away from the light emitting component when the cover body covers the main body;

[0010] wherein the light emitting component and the film component are mounted on the main body, and the imaging component is mounted on the cover body.

[0011] Optionally, the cover body is provided with an opening, and the imaging component is at least partially mounted in the opening to emit light through the opening.

[0012] Optionally, the cover body is rotatably connected with the main body to cover or uncover the main body.

[0013] The projection device further comprises an elastic member elastically connected between the cover body and the main body, and the elastic member is used to drive the cover body to cover the main body.

[0014] Optionally, the cover includes an outer frame and a screw cap. The outer frame is movably connected to the main body. The outer frame has a mounting hole in the middle. The screw cap is installed in the mounting hole and can rotate relative to the outer frame. The screw cap is connected to the imaging component and can drive the imaging component to rotate, so as to adjust the distance between the imaging component and the film component.

[0015] Optionally, the cover body further includes a cover plate connected to the outer frame and located on the side of the screw cap facing the main body. The cover plate has a through hole, and the imaging component is disposed in the through hole. The outer surface of the imaging component has a first thread, and the inner wall of the through hole has a second thread that is threadedly connected to the first thread to adjust the distance between the imaging component and the film component.

[0016] Optionally, the imaging component is provided with a limiting protrusion, and the screw cap is provided with a limiting groove. The limiting protrusion is engaged within the limiting groove, so that the screw cap drives the imaging component to rotate; or...

[0017] The imaging component is provided with a limiting groove, and the screw cap is provided with a limiting protrusion. The limiting protrusion is engaged within the limiting groove, so that the screw cap drives the imaging component to rotate; or...

[0018] The screw cap has multiple protruding ribs on the side opposite to the main body, and these ribs are evenly arranged around the opening; or...

[0019] The main body has a notch on the side facing the cover, and the notch exposes a portion of the cover for opening the cover.

[0020] Optionally, the film assembly includes a carrier and a film sheet, the carrier being installed inside the main body, and the film sheet being detachably installed on the carrier;

[0021] When the cover and the main body are in the open state, the main body exposes the film.

[0022] Optionally, the carrier includes a carrier portion and a snap-fit ​​portion. The carrier portion is used to carry the film, and the snap-fit ​​portion is connected to the periphery of the carrier portion and is used to limit the film.

[0023] Optionally, the projection device may further include a drive unit and a gear set;

[0024] The driving component and the gear set are disposed within the main body. The edge of the support component is provided with teeth. The driving component meshes with the teeth of the support component through the gear set to drive the support component and the film to rotate.

[0025] Optionally, the projection device further includes:

[0026] A support is disposed within the main body and located between the light-emitting component and the film component. The support includes a cylindrical body and a plate disposed around the cylindrical body. The cylindrical body passes through the plate. The support member is rotatable relative to the cylindrical body. The film is at least partially disposed opposite to one end of the cylindrical body, and the light-emitting component is at least partially disposed opposite to the other end of the cylindrical body. The driving member is mounted on the support. The driving member and the support member are located on both sides of the plate.

[0027] A pressure plate is disposed on the side of the bracket away from the light-emitting component, and the bearing member is rotatably mounted on the side of the pressure plate away from the bracket. The pressure plate and the bracket are mounted on the main body.

[0028] The projection device further includes a first focusing element and a second focusing element, wherein the first focusing element is disposed at one end of the cylinder and the second focusing element is disposed at the other end of the cylinder.

[0029] In this embodiment, the cover and the main body are connected by a movable connection, allowing for easy opening and closing of the cover. When the cover is placed on the main body, the imaging component is precisely positioned on the side of the film component away from the light-emitting component, ensuring that the light signal is transmitted and processed along a predetermined path, achieving efficient and accurate projection. The ingenious design of the cover makes maintenance, adjustment, cleaning, or component replacement extremely convenient for users. By easily opening the cover, users can directly access and operate key components inside the main body, such as the film component, without disassembling the entire device, improving the ease of use of the projection device. Furthermore, it improves the maintainability of the projection device, significantly shortens maintenance time, and reduces maintenance difficulty. It balances ensuring the normal operation of the projection device with convenient user operation. Attached Figure Description

[0030] 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 drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0032] Figure 1 This is a schematic diagram of the projection device provided in an embodiment of this application.

[0033] Figure 2for Figure 1 Exploded view of the projection device shown.

[0034] Figure 3 for Figure 1 A schematic diagram of the projection device from another angle.

[0035] Figure 4 for Figure 3 The projection device shown is a cross-sectional view along the AA direction.

[0036] Figure 5 for Figure 1 A schematic diagram of part of the structure of the projection device shown.

[0037] Figure 6 for Figure 5 An exploded view of part of the structure in the projection device shown.

[0038] Figure 7 for Figure 6 An enlarged view of part B in the exploded diagram shown.

[0039] Figure 8 for Figure 1 A schematic diagram of another part of the projection device shown.

[0040] Figure 9 for Figure 8 An enlarged schematic diagram of part A of the projection device shown.

[0041] Explanation of reference numerals in the attached figures:

[0042] 10. Main body; 11. Notch; 12. Elastic element; 13. Rotating shaft; 14. Middle shell; 16. Lower shell; 18. Base.

[0043] 20. Cover body; 21. Opening; 22. Outer frame; 24. Screw cap; 26. Cover plate; 261. Through hole; 262. Second thread; 264. Limiting groove.

[0044] 30. Light-emitting components;

[0045] 40. Film assembly; 42. Carrier component; 422. Carrier part; 4222. Carrier plate; 4224. Limiting part; 424. Snap-fit ​​part; 4242. Snap-fit ​​spring; 4243. Limiting protrusion; 426. Tooth; 44. Film; 441. Positioning port.

[0046] 50. Imaging assembly; 51. First thread; 52. Sleeve; 54. Limiting protrusion;

[0047] 62. Driving component; 64. Gear set; 642. Driving gear;

[0048] 72. Support; 722. Cylinder; 724. Plate; 74. Pressure plate;

[0049] 82. First focusing element; 84. Second focusing element;

[0050] 92. Battery; 94. Circuit board; 96. Speaker. Detailed Implementation

[0051] 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 some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0052] 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 throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0053] This application provides a projection device; please refer to [link / reference]. Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the projection device provided in the embodiments of this application. Figure 2 for Figure 1 An exploded view of the projection device is shown. The projection device includes a main body 10, a cover 20, a light-emitting component 30, a film component 40, and an imaging component 50. The cover 20 is movably connected to the main body 10. The light-emitting component 30 is capable of emitting light signals. The film component 40 is disposed on the transmission path of the emitted light signal. The imaging component 50 is used to image the light signal transmitted through the film component 40. When the cover 20 is placed over the main body 10, the imaging component 50 is disposed on the side of the film component 40 away from the light-emitting component 30. The light-emitting component 30 and the film component 40 are mounted on the main body 10, and the imaging component 50 is mounted on the cover 20.

[0054] In this embodiment, the main body 10 serves as a support structure for the projection device, and internally houses a light-emitting component 30 and a film component 40. The light-emitting component 30 generates light signals to provide a light source for the subsequent imaging process. The light-emitting component 30 may include various light-emitting elements, such as light-emitting diodes (LEDs) and laser diodes. These light-emitting elements can emit light of different wavelengths, intensities, and colors according to design requirements to meet diverse projection needs. The film component 40 is located on the light signal transmission path and can carry various patterns, such as text and images. These patterns are the content to be projected by the projection device. The film component 40 is used to modulate the light signals from the light-emitting component 30 to form the light signal to be projected.

[0055] The cover 20 of the projection device is connected to the main body 10 by a movable connection, allowing for convenient opening and closing of the cover 20. The movable connection can include hinge connections, sliding rail connections, magnetic connections, etc., making the operation of the cover 20 easy and efficient. When the cover 20 is placed on the main body 10, the imaging component 50 is precisely positioned on the side of the film component 40 opposite to the light-emitting component 30, ensuring that the light signal is transmitted and processed along a predetermined path, achieving efficient and accurate projection. Specifically, the light signal emitted by the light-emitting component 30 carries the pattern information from the film component 40 as it passes through it, and then accurately enters the imaging component 50 mounted on the cover 20. The lens in the imaging component 50 further processes these light signals to ensure that a clear and magnified pattern is ultimately formed on the projection surface. Moreover, when the cover 20 is placed on the main body 10, it effectively protects the internal components of the projection device from damage caused by external dust, debris, and accidental collisions.

[0056] When users need to perform maintenance, adjustments, cleaning, or component replacements on the projection device, the ingenious design of the cover 20 makes these operations extremely convenient. By easily opening the cover 20, users can directly access and operate key components inside the main body 10, such as the film assembly 40, without disassembling the entire device, thus improving the ease of use of the projection device. Furthermore, it enhances the maintainability of the projection device, significantly shortening maintenance time and reducing maintenance difficulty. For example, users can quickly replace the film assembly 40 to display different images, or conveniently replace a damaged light-emitting component 30 without worrying about affecting the normal operation of the imaging component 50, further enhancing the practicality and user experience of the projection device. Therefore, the ingenious design of the cover 20 in this embodiment of the application ensures both the normal operation of the projection device and facilitates user operation.

[0057] In some embodiments, the cover 20 has an opening 21, and the imaging component 50 is at least partially installed in the opening 21 so that light can be emitted through the opening 21. In this embodiment, when the cover 20 is placed on the main body 10, the imaging component 50 can emit light through the opening 21, so that the imaging component 50 can directly display the image without the need for an additional light-emitting window or complex optical path adjustment, which simplifies the overall structure and improves the light-emitting efficiency and imaging stability.

[0058] In some embodiments, the cover 20 is rotatably connected to the body 10 so that the cover 20 covers or opens the body 10. For example, the cover 20 is rotatably connected to the body 10 and can rotate about the pivot of the connection. The rotatable connection is not only stable but also convenient to operate. Users can easily complete the covering or opening action by simply turning the cover 20, which facilitates the maintenance or adjustment of the internal components of the body 10.

[0059] In another example, the cover 20 can also be directly detached and connected to the main body 10 via snap-fit ​​or screw-fit methods. The snap-fit ​​method utilizes the cooperation of clips and slots to quickly fix or separate the cover 20 from the main body 10, making installation and disassembly very rapid. The screw-fit method provides stronger connection strength and stability through threaded engagement. The specific connection method between the cover 20 and the main body 10 can be flexibly selected according to actual usage needs and design requirements, making the installation and disassembly of the cover 20 more convenient and further improving the practicality and maintainability of the projection device.

[0060] Please combine Figure 3 and Figure 4 , Figure 3 for Figure 1 A schematic diagram of the projection device from another angle is shown. Figure 4 for Figure 3 The projection device shown is a cross-sectional view along the AA direction. In some embodiments, the projection device further includes an elastic element 12, which is elastically connected between the cover 20 and the main body 10, and is used to drive the cover 20 to cover the main body 10.

[0061] In this embodiment, the elastic element 12 is used to drive the cover 20 to automatically return to the state of covering the main body 10 through its own elastic force, so that after the user opens the cover 20, once he / she releases his / her hand, the cover 20 will automatically close under the action of the elastic element 12, which is convenient for operation.

[0062] Understandably, the projection device also includes a rotating shaft 13, through which the cover 20 is rotatably connected to the main body 10. The elastic element 12 is a torsion spring, which is sleeved on the rotating shaft 13 and elastically connected between the cover 20 and the main body 10. When the cover 20 is opened, the elastic element 12 has an elastic tendency to cover the cover 20 onto the main body 10.

[0063] Furthermore, a magnetic connection structure can be added to the other side of the cover 20. When the cover 20 approaches the main body 10, the magnetic connection structure generates an attractive force, firmly adhering the cover 20 to the main body 10. This not only improves the connection strength between the cover 20 and the main body 10, but also enhances the overall stability of the device, preventing the cover 20 from loosening or detaching due to accidental collisions or vibrations, thereby better protecting the internal components and extending the service life of the projection device.

[0064] In some embodiments, the cover 20 includes an outer frame 22 and a swivel cap 24. The outer frame 22 is movably connected to the main body 10, such as a rotatable connection. The swivel cap 24 has a mounting hole in the middle. The swivel cap 24 is installed in the mounting hole and can rotate relative to the outer frame 22. The swivel cap 24 is connected to the imaging component 50 and can drive the imaging component 50 to rotate, so as to adjust the distance between the imaging component 50 and the film component 40.

[0065] In this embodiment, the distance between the imaging component 50 and the film component 40 can be adjusted by rotating the cover 24. This allows the user to flexibly adjust the relative position of the imaging component 50 and the film component 40 according to actual usage needs, thereby optimizing the projection effect and achieving clearer and more accurate image projection. Users can easily fine-tune the position of the imaging component 50 by rotating the cover 24 to obtain the best projection quality, depending on different projection distances or usage environments.

[0066] In some embodiments, the cover 20 further includes a cover plate 26, which is connected to the outer frame 22 and located on the side of the screw cap 24 facing the main body 10. The cover plate 26 has a through hole 261, and the imaging component 50 is disposed in the through hole 261. The outer surface of the imaging component 50 has a first thread 51, and the inner wall of the through hole 261 has a second thread 262 that is threadedly connected to the first thread 51, so as to adjust the distance between the imaging component 50 and the film component 40.

[0067] In this embodiment, the imaging component 50 and the through hole 261 are connected by a thread, allowing the imaging component 50 to move along the thread direction within the through hole 261. When it is necessary to adjust the distance between the imaging component 50 and the film component 40, the user can rotate the cover 24 clockwise or counterclockwise as needed to move the imaging component 50 toward or away from the film component 40, thereby increasing or decreasing the distance between them. During the rotation of the cover 24, the user can observe the image effect on the projection surface to determine whether the current distance is appropriate. If the image is not clear enough or the size does not meet expectations, the cover 24 can be rotated further for fine-tuning until the clearest and most ideal projection effect is obtained. This adjustment mechanism design allows the user to flexibly and precisely adjust the distance between the imaging component 50 and the film component 40 through a simple rotation operation to optimize the projection effect. At the same time, the threaded connection provides stable mechanical support, ensuring the stability of the projection effect after adjustment.

[0068] It is understandable that the cover plate 26 and the outer frame 22 can be set separately or molded as one piece.

[0069] In some embodiments, the imaging assembly 50 includes a plurality of lenses; the cover 20 includes an outer frame 22 and a screw cap 24, the outer frame 22 being movably connected to the main body 10, the screw cap 24 being rotatably connected to the outer frame 22, and the screw cap 24 being connected to the imaging assembly 50, and capable of adjusting the distance between at least two lenses.

[0070] In this embodiment, the imaging assembly 50 includes multiple lenses, which are installed according to a specific optical design and arrangement. For example, the imaging assembly 50 may include at least three lenses, which can be selected as wide-angle lenses, standard lenses, and telephoto lenses as needed. This diverse lens configuration can meet different optical requirements and projection scenarios.

[0071] The screw cap 24 can be connected to a specific lens or lens group inside the imaging assembly 50. When the screw cap 24 is rotated, the lens or lens group connected to the screw cap 24 is displaced along a pre-set optical axis. This displacement changes the distance between the lens or lens group and other lenses, thereby adjusting the optical parameters of the entire imaging assembly 50, such as focal length and image distance, to adjust the imaging effect. For example, it can make the image clearer during focusing or change the field of view during zooming. This adjustment method can achieve relatively fine lens spacing control because the rotational motion can easily and precisely control the distance of lens displacement by controlling the rotation angle, thus meeting the needs for precise adjustment of lens spacing in different imaging scenarios.

[0072] Please combine Figure 5 , Figure 6 andFigure 7 , Figure 5 for Figure 1 A schematic diagram of part of the structure of the projection device shown. Figure 6 for Figure 5 An exploded view of part of the structure in the projection device shown. Figure 7 for Figure 6 The exploded view shown is an enlarged schematic diagram of part B. In some embodiments, the imaging assembly 50 further includes a sleeve 52, with a portion of the lens disposed within the sleeve 52; the cover 20 further includes a cover plate 26, which is connected to the outer frame 22 and located on the side of the screw cap 24 facing the main body 10. The cover plate 26 has a through hole 261, and the sleeve 52 of the imaging assembly 50 is at least partially disposed within the through hole 261. The outer surface of the sleeve 52 has a first thread 51, and the inner wall of the through hole 261 has a second thread 262 that is threadedly connected to the first thread 51, so as to adjust the distance between at least two lenses.

[0073] In some examples, the cover plate 26 may include a cover plate body and a threaded portion. The cover plate body has a through hole, and the threaded portion is installed in the through hole. The threaded portion has a threaded hole, and a second thread 262 is provided in the threaded hole. In other examples, the cover plate body and the threaded portion may be integrally formed, that is, the cover plate 26 directly has a threaded hole, and a second thread 262 is provided in the threaded hole.

[0074] In this embodiment, some lenses are disposed within the sleeve 52. The sleeve 52 serves to fix and support these lenses, ensuring their stability in a certain position and providing a basic structure for subsequent spacing adjustment. Some lenses are fixedly mounted on the cover plate 26, so that when the sleeve 52 moves relative to the cover plate 26, the distance between the lenses inside the sleeve 52 and the lenses fixedly mounted on the cover plate 26 can be changed.

[0075] The cover 20 includes an outer frame 22, a screw cap 24, and a cover plate 26. The cover plate 26 is connected to the outer frame 22 and is located on the side of the screw cap 24 facing the main body 10, that is, the cover plate 26 is located on the inner side of the cover 20 relative to the main body 10. The outer surface of the sleeve 52 is designed with a first thread 51, and the inner wall of the through hole 261 on the cover plate 26 is correspondingly provided with a second thread 262 that matches the first thread 51. The two are tightly connected together by a threaded connection. When the screw cap 24 rotates, the sleeve 52 will rotate accordingly because the screw cap 24 is connected to the sleeve 52. During the rotation of the sleeve 52, because the first thread 51 on its outer surface meshes with the second thread 262 on the inner wall of the through hole 261 of the cover plate 26, according to the principle of threaded transmission, the sleeve 52 will move up and down along the optical axis. The lenses installed inside the sleeve 52 move along the optical axis with the sleeve 52, thus changing the relative distance between these lenses and other lenses not in the sleeve 52. This allows for adjustment of the optical parameters (such as focal length and image distance) of the entire imaging assembly 50. For example, it can make the image clearer during focusing or change the field of view during zooming. In this way, the lens spacing can be controlled relatively precisely because there is a definite proportional relationship between the rotation angle of the thread and the linear displacement of the sleeve 52. By controlling the rotation angle of the cap 24, the lens displacement distance can be precisely controlled, meeting the needs for precise adjustment of lens spacing in different imaging scenarios.

[0076] In some embodiments, the imaging component 50 is provided with a limiting protrusion 54, and the screw cap 24 is provided with a limiting groove 264. The limiting protrusion 54 is engaged in the limiting groove 264 so that the screw cap 24 drives the imaging component 50 to rotate; or, the imaging component 50 is provided with a limiting groove 264, and the screw cap 24 is provided with a limiting protrusion 54. The limiting protrusion 54 is engaged in the limiting groove 264 so that the screw cap 24 drives the imaging component 50 to rotate.

[0077] For example, the limiting protrusion 54 on the imaging component 50 is precisely engaged in the limiting groove 264 on the cap 24. When the cap 24 starts to rotate, the rotation action of the cap 24 is transmitted to the imaging component 50 due to the engagement relationship between the limiting protrusion 54 and the limiting groove 264.

[0078] In another example, the limiting protrusion 54 on the cap 24 is precisely engaged in the limiting groove 264 on the imaging assembly 50. When the cap 24 starts to rotate, the rotation of the cap 24 is transmitted to the imaging assembly 50 due to the engagement between the limiting protrusion 54 and the limiting groove 264.

[0079] As the cap 24 continues to rotate, the imaging assembly 50 also rotates continuously, thereby changing the relative position of the lenses inside the imaging assembly 50 and adjusting the distance between the imaging assembly 50 and the film assembly 40.

[0080] In some embodiments, the outer surface of the cap 24 can be rough, which increases the friction between the user and the cap 24, making it easier to rotate the cap 24.

[0081] In some embodiments, the screw cap 24 has multiple raised strips on its outer side away from the cover plate 26. These raised strips are evenly distributed around the imaging assembly 50 or the opening 21, increasing the friction between the user and the screw cap 24, thereby facilitating the user's rotation of the screw cap 24. When the user passes over these raised strips and applies a rotational force, the combination of the raised strips makes the rotation operation more stable and precise.

[0082] In some embodiments, one of the outer frame 22 and the screw cap 24 has a scale, and the other has an indicator mark. For example, the outer frame 22 may have a scale line surrounding the screw cap 24, and the screw cap 24 may have an indicator arrow corresponding to the scale line. Alternatively, the edge of the screw cap 24 may have a scale line, and the outer frame 22 may have an indicator arrow corresponding to the scale line. When the screw cap 24 rotates, the user can accurately determine the rotation angle of the screw cap 24 relative to the outer frame 22 by observing the relative position change between the indicator arrow and the scale line. This design allows the user to precisely control the amount of rotation of the screw cap 24, thereby achieving precise adjustment of the imaging component 50 and the lens rotation angle, meeting the lens spacing adjustment requirements under different optical needs, and improving the accuracy and controllability of the adjustment process.

[0083] In some embodiments, the main body 10 has a notch 11 on the side facing the cover 20, the notch 11 exposing a portion of the cover 20 for opening the cover 20.

[0084] In this embodiment, since the notch 11 exposes part of the cover 20, the user can directly insert his / her finger into the notch 11 and easily apply a force in an appropriate direction to the exposed cover 20, so that the cover 20 can be easily opened from the main body 10. This effectively avoids the problem of difficulty in opening due to the cover 20 being tightly attached to the main body 10, reduces the difficulty of operation, and improves the convenience of use.

[0085] Please combine Figure 8 and Figure 9 , Figure 8 for Figure 1 A schematic diagram of another part of the projection device shown. Figure 9 for Figure 8An enlarged schematic diagram of part A in the projection device shown. In some embodiments, the film assembly 40 includes a carrier 42 and a film 44. The carrier 42 is installed inside the main body 10, and the film 44 is detachably installed on the carrier 42. When the cover 20 and the main body 10 are in the open state, the film 44 is exposed in the main body 10.

[0086] In this embodiment, the carrier 42 provides a stable mounting position for the film 44 and has a corresponding mounting structure for detachable installation of the film 44, ensuring the positional accuracy and stability of the film 44 during operation. The film 44 can carry patterns, which are the content to be projected by the projection device. During projection, the film 44 modulates the light signal from the light-emitting component 30 to form the light signal to be projected. When the film 44 needs to be installed or removed, first open the cover 20 to expose the film 44 inside the main body 10. When installing the film 44, place it on the carrier 42 in the correct direction and position, and fix it using the mounting structure on the carrier 42 to ensure a tight fit and precise positioning between the film 44 and the carrier 42. When removing the film 44, first open the cover 20, then loosen the fixing structure of the film 44 on the carrier 42, and then remove it from the carrier 42. The detachable installation method of the film 44 allows users to quickly replace different film 44 according to different projection needs, thereby enhancing the versatility and adaptability of the projection device.

[0087] In some embodiments, the carrier 42 includes a carrier portion 422 and a snap-fit ​​portion 424. The carrier portion 422 is used to carry the film 44, and the snap-fit ​​portion 424 is connected to the periphery of the carrier portion 422 and is used to limit the film 44.

[0088] In this embodiment, when installing the film 44, the film 44 is placed on the support portion 422. Then, through the elastic or mechanical structure of the snap-fit ​​portion 424 connected to the periphery of the support portion 422, the snap-fit ​​portion 424 is tightly fitted to the edge of the film 44, thereby fixing the film 44. The shape and size of the snap-fit ​​portion 424 match the film 44, enabling it to snap and limit the film 44 from its edge, preventing displacement or shaking during operation and ensuring the positional accuracy and stability of the film 44. This ensures that the modulation process of the light signal by the pattern on the film 44 proceeds precisely as expected, ensuring a clear, accurate, and compliant projected image. Simultaneously, this snap-fit ​​method facilitates the disassembly and replacement of the film 44, allowing users to quickly replace different types of film 44 to meet diverse projection needs.

[0089] In some embodiments, the snap-fit ​​portion 424 includes a plurality of snap-fit ​​springs 4242, which are spaced apart. One end of each snap-fit ​​spring 4242 is fixedly connected to the support portion 422, and the plurality of snap-fit ​​springs 4242 are used to snap-fit ​​the film 44.

[0090] In this embodiment, one end of each snap-fit ​​spring 4242 is fixedly connected to the support portion 422, while the other end is designed as a free end with a certain degree of elasticity. When installing the film 44, the film 44 is placed on the support portion 422, and then the elastic deformation of the snap-fit ​​spring 4242 causes the free end of the snap-fit ​​spring 4242 to fit tightly against the edge of the film 44, thereby achieving snap-fit ​​and fixation of the film 44. This ensures that the film 44 will not shift or shake during operation, guaranteeing its positional accuracy and stability. Simultaneously, the spacing of the snap-fit ​​springs 4242 makes the disassembly and replacement of the film 44 more convenient, allowing users to quickly replace different film 44s as needed to meet different projection requirements.

[0091] In some embodiments, at least a portion of the snap-fit ​​spring 4242 has a limiting protrusion 4243 protruding from the other end, and the limiting protrusion 4243 is disposed on the side of the snap-fit ​​spring 4242 facing the film 44; when the film 44 is installed on the carrier 42, the film 44 is located between the limiting protrusion 4243 and the carrier portion 422.

[0092] In this embodiment, one end of each snap-fit ​​spring tab 4242 is fixedly connected to the support portion 422, while the other end is designed as a free end, and a limiting protrusion 4243 protrudes from this free end. The limiting protrusion 4243 is located on the side of the snap-fit ​​spring tab 4242 facing the film sheet 44. When installing the film sheet 44, the film sheet 44 is placed on the support portion 422, and then the free end of the snap-fit ​​spring tab 4242 is pressed, causing the snap-fit ​​spring tab 4242 to elastically deform, thereby pushing the film sheet 44 past the limiting protrusion 4243 and into the space between the limiting protrusion 4243 and the support portion 422. At this time, the film sheet 44 is limited between the limiting protrusion 4243 and the support portion 422. The function of the limiting protrusion 4243 is to prevent the film sheet 44 from leaving the support member in the vertical direction.

[0093] In some embodiments, the film 44 has a positioning opening 441, the supporting part 422 includes a supporting plate 4222 and a limiting part 4224, the limiting part 4224 protrudes from the supporting part 422, the film 44 is located on the supporting plate 4222, and the limiting part 4224 is located inside the positioning opening 441.

[0094] In this embodiment, when installing the film 44, it is placed on the support plate 4222, ensuring that its positioning port 441 is aligned with the limiting part 4224. By slightly pressing the film 44, the limiting part 4224 can be smoothly inserted into the positioning port 441, effectively limiting the horizontal displacement of the film 44. This enhances the stability of the film 44 during operation, avoiding problems such as image blurring or misalignment caused by shaking or loosening, and ensuring the accuracy and quality of projection or imaging. Simultaneously, this design also considers ease of operation; users can easily disassemble and replace the film 44 to meet different usage needs without complex tools or cumbersome steps, improving the practicality and flexibility of the equipment. Furthermore, this simple and practical structure is easy to manufacture and assemble, helping to reduce production costs and improve production efficiency.

[0095] In some embodiments, the projection device further includes a drive member 62 and a gear set 64, which are disposed within the main body 10. The edge of the support member 42 is provided with teeth 426. The drive member 62 meshes with the teeth 426 of the support member 42 through the gear set 64 to drive the support member 42 and the film 44 to rotate.

[0096] In this embodiment, when the drive unit 62 is activated, power is transmitted to the teeth 426 of the carrier unit 42 via the gear set 64, thereby directly driving the carrier unit 42 and the film 44 mounted thereon to rotate. This design eliminates the need for additional connecting components, as the teeth 426 on the edge of the carrier unit 42 directly mesh with the gear set 64, forming a highly efficient drive system that simplifies the mechanical structure and improves drive efficiency. By adjusting the transmission ratio of the gear set 64, the rotational speed and angle of the carrier unit 42 can be precisely controlled, thereby achieving precise control over the rotation of the film 44. This precise rotational control is crucial for achieving high-quality dynamic image projection, ensuring that the projected image is both clear and stable, meeting various complex projection requirements. The carrier unit 42 has teeth 426 on its edge that mesh with the gear set 64, allowing it to both carry the film and mesh with the gear set 64, resulting in a simple structure.

[0097] In some embodiments, the gear set 64 includes a drive gear 642, the drive shaft of the drive member 62 is fixedly connected to the drive gear 642, and the drive gear 642 meshes with the teeth 426 of the carrier member 42.

[0098] In this embodiment, when the drive unit 62 is activated, the drive shaft drives the drive gear 642 to rotate. The drive gear 642 directly transmits power through meshing with the teeth 426 of the carrier 42, driving the carrier 42 and the film 44 on it to rotate. Therefore, only one drive gear 642 is needed to achieve transmission, simplifying the transmission structure, reducing the number of parts, and lowering costs and failure risks. At the same time, this direct meshing method improves transmission efficiency and reduces energy loss. By selecting a suitable tooth ratio between the drive gear 642 and the teeth 426 of the carrier 42, the rotation speed and angle of the carrier 42 can be precisely controlled, achieving precise adjustment of the rotation of the film 44, ensuring the stability and smoothness of the film 44's rotation, thereby improving the quality of the projected image and meeting the high-precision requirements of dynamic image projection.

[0099] In some embodiments, the projection device further includes a bracket 72 disposed within the main body 10 and located between the light-emitting component 30 and the film component 40. The bracket 72 includes a cylindrical body 722 and a plate 724 disposed around the cylindrical body 722. The cylindrical body 722 passes through the plate 724. The support member 42 is rotatable relative to the cylindrical body 722. The film 44 is at least partially disposed opposite to one end of the cylindrical body 722. The light-emitting component 30 is at least partially disposed opposite to the other end of the cylindrical body 722. A drive member 62 is mounted on the bracket 72. The drive member 62 and the support member 42 are located on both sides of the plate 724.

[0100] In this embodiment, the cylinder 722 of the bracket 72 serves as part of the optical path channel, providing a propagation path for the light emitted by the light-emitting component 30. This ensures that the light can be directly and efficiently projected from the light-emitting component 30 onto the film 44, reducing scattering and loss of light during propagation and improving the clarity and quality of the image. The driving component 62 and the carrier component 42 are located on opposite sides of the plate 724 of the bracket 72, making full use of the internal space of the projection device. The plate 724 can also serve as a partition layer, reducing the impact of vibrations generated by the driving component 62 during operation on the carrier component 42 and the film 44. This allows the driving component 62 to stably drive the carrier component 42 to rotate, thereby rotating the film 44 and providing support for dynamic image projection. Simultaneously, the structure of the bracket 72 provides stable support for the driving component 62, ensuring its smooth operation and thus improving the overall stability of the projection device.

[0101] In some embodiments, the projection device further includes a pressure plate 74, which is disposed on the side of the bracket 72 away from the light-emitting component 30, and a support member 42 is rotatably mounted on the side of the pressure plate 74 away from the bracket 72. The pressure plate 74 and the bracket 72 are mounted on the main body 10.

[0102] In this embodiment, the pressure plate 74, acting as a carrier, together with the bracket 72, supports and fixes the carrier component 42, forming a multi-point support structure. This provides a more stable support foundation for the carrier component 42. This multi-point support method can effectively disperse the force generated by the carrier component 42 during rotation, reducing the swaying or deformation that may be caused by single-point support. The carrier component 42 is rotatably mounted on the pressure plate 74, making the installation and disassembly of the carrier component 42 more convenient. Maintenance personnel do not need to disassemble the entire bracket 72 or other complex components; they only need to operate the relevant connecting parts of the pressure plate 74 to quickly replace or maintain the carrier component 42, simplifying the maintenance process and reducing maintenance costs. At the same time, the pressure plate 74 and the bracket 72 are respectively connected to the main body 10, enhancing the stability of the overall structure and providing stable support for the rotation of the carrier component 42. In addition, this design facilitates disassembly and maintenance, simplifying the maintenance process of the projection device.

[0103] In some embodiments, the projection device further includes a first focusing element 82 and a second focusing element 84, wherein the first focusing element 82 is disposed at one end of the cylindrical body 722 and the second focusing element 84 is disposed at the other end of the cylindrical body 722.

[0104] In this embodiment, a first focusing element 82 and a second focusing element 84 are respectively provided at both ends of the cylindrical body 722. For example, the first focusing element 82 is installed at the end of the cylindrical body 722 near the light-emitting component 30, used to collect and focus the light emitted by the light-emitting component 30, reducing scattering and loss of light during propagation and improving the utilization rate of light energy. The second focusing element 84 is installed at the end of the cylindrical body 722 near the film 44, used to efficiently focus the light emitted by the light-emitting component 30 onto the film 44, ensuring that the film 44 can uniformly receive light, thereby improving image quality. By setting the first focusing element 82 and the second focusing element 84, the optical path is optimized, allowing light to accurately propagate from the light-emitting component 30 to the film 44 and then project onto the projection surface, making the projected image brighter and clearer, thus improving projection quality. The first focusing element 82 and the second focusing element are arranged together with the carrier 42 on the cylindrical body 722, which not only improves the light efficiency of the projection device but also optimizes space utilization, providing users with a high-quality projection experience.

[0105] In some embodiments, the main body 10 may include a middle housing 14 and a lower housing 16. A bracket 72 and a pressure plate 74 are mounted on the middle housing 14, and a film assembly 40 and a drive unit 62 are mounted on the bracket 72 and the pressure plate 74. After these are installed, they are then installed on the lower housing 16 for easy installation.

[0106] In some embodiments, the projection device further includes buttons and a circuit board 94. The circuit board 94 is installed inside the main body 10, and the buttons are partially exposed outside the main body 10 for users to press. The buttons are connected to the circuit board 94, and the circuit board is connected to the driver 62, the light-emitting component 30, etc., to control the corresponding functions of the projection device.

[0107] In some embodiments, the projection device further includes a speaker 96, which is installed inside the body 10 and connected to the circuit board 94. The speaker 96 is capable of playing audio as needed.

[0108] In some embodiments, the main body 10 further includes a base 18, on which the lower housing 16 is mounted. The base can raise the height of the lower housing 16, preventing it from directly contacting a support surface such as a table, thus protecting the lower housing 16 and the components inside the main body 10, and also enhancing the stability and flatness of the main body 10. Additionally, the bottom side of the lower housing 16 may be provided with a sound outlet, and the base 18 raising the lower housing 16 facilitates audio output from the sound outlet.

[0109] In some embodiments, the projection device further includes a battery 92, which is installed inside the main body and is used to power electrical components, such as the driver 62, the light-emitting component 50, the circuit board 94, the speaker 96, etc.

[0110] In the above embodiments, the descriptions of each embodiment have their own emphasis. Parts not described in detail in a particular embodiment can be referred to in the relevant descriptions of other embodiments. The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0111] The projection device provided in the embodiments of this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A projection device, characterized in that, include: main body; The cover is movably connected to the main body; A light-emitting component, which is capable of emitting light signals; The film assembly is located on the transmission path of the emitted light signal; An imaging component is used to image the light signal transmitted through the film component. When the cover is placed on the main body, the imaging component is located on the side of the film component away from the light-emitting component. The light-emitting component and the film component are mounted on the main body, and the imaging component is mounted on the cover.

2. The projection device according to claim 1, characterized in that, The cover has an opening, and the imaging component is at least partially installed in the opening so that light can be emitted through the opening.

3. The projection device according to claim 2, characterized in that, The cover is rotatably connected to the main body, so that the cover can cover or open the main body; The projection device also includes an elastic element that is elastically connected between the cover and the main body, and the elastic element is used to drive the cover to cover the main body.

4. The projection device according to claim 2, characterized in that, The cover includes an outer frame and a screw cap. The outer frame is movably connected to the main body. The outer frame has a mounting hole in the middle. The screw cap is installed in the mounting hole and can rotate relative to the outer frame. The screw cap is connected to the imaging component and can drive the imaging component to rotate, so as to adjust the distance between the imaging component and the film component.

5. The projection device according to claim 4, characterized in that, The cover also includes a cover plate connected to the outer frame and located on the side of the screw cap facing the main body. The cover plate has a through hole, and the imaging component is disposed in the through hole. The outer surface of the imaging component has a first thread, and the inner wall of the through hole has a second thread that is threadedly connected to the first thread to adjust the distance between the imaging component and the film component.

6. The projection device according to claim 4, characterized in that, The imaging component has a limiting protrusion, and the screw cap has a limiting groove. The limiting protrusion is engaged within the limiting groove, so that the screw cap drives the imaging component to rotate; or... The imaging component is provided with a limiting groove, and the screw cap is provided with a limiting protrusion. The limiting protrusion is engaged within the limiting groove, so that the screw cap drives the imaging component to rotate; or... The screw cap has multiple protruding ribs on the side opposite to the main body, and these ribs are evenly arranged around the opening; or... The main body has a notch on the side facing the cover, and the notch exposes a portion of the cover for opening the cover.

7. The projection device according to claim 1, characterized in that, The film assembly includes a carrier and a film sheet, the carrier is installed inside the main body, and the film sheet is detachably installed on the carrier; When the cover and the main body are in the open state, the main body exposes the film.

8. The projection device according to claim 7, characterized in that, The carrier includes a carrier portion and a snap-fit ​​portion. The carrier portion is used to carry the film, and the snap-fit ​​portion is connected to the periphery of the carrier portion and is used to limit the film.

9. The projection device according to claim 7, characterized in that, The projection device also includes a drive unit and a gear set; The driving component and the gear set are disposed within the main body. The edge of the support component is provided with teeth. The driving component meshes with the teeth of the support component through the gear set to drive the support component and the film to rotate.

10. The projection device according to claim 9, characterized in that, The projection device also includes: A support is disposed within the main body and located between the light-emitting component and the film component. The support includes a cylindrical body and a plate disposed around the cylindrical body. The cylindrical body passes through the plate. The support member is rotatable relative to the cylindrical body. The film is at least partially disposed opposite to one end of the cylindrical body, and the light-emitting component is at least partially disposed opposite to the other end of the cylindrical body. The driving member is mounted on the support. The driving member and the support member are located on both sides of the plate. A pressure plate is disposed on the side of the bracket away from the light-emitting component, and the bearing member is rotatably mounted on the side of the pressure plate away from the bracket. The pressure plate and the bracket are mounted on the main body. The projection device further includes a first focusing element and a second focusing element, wherein the first focusing element is disposed at one end of the cylinder and the second focusing element is disposed at the other end of the cylinder.

Images