Projection sheet support and projection device

Abstract

The utility model relates to a projection sheet support and a projection device, the projection sheet support comprises a mounting piece, an image assembly and a limiting piece, the mounting piece comprises a main body part and a supporting part which are connected, the main body part is provided with a mounting through hole, the supporting part is arranged at one end of the mounting through hole, and the supporting part extends towards the axis of the mounting through hole relative to the main body part; a first light-transmitting hole is defined by the supporting part, and the first light-transmitting hole is communicated with the mounting through hole; the image assembly is embedded in the mounting through hole and abuts against the supporting part, and the image assembly is exposed through the first light hole; the limiting piece is arranged in the mounting through hole, and the limiting piece and the supporting part are located on the two opposite sides of the image assembly respectively; the limiting piece is provided with two free ends which are respectively propped against the inner wall of the main body part; the two free ends can be close to each other under the action of external force, so that the limiting piece is elastically deformed to release the clamping relation between the limiting piece and the main body part. According to the embodiment, the limiting piece and the mounting piece are simple in structure and convenient to disassemble or assemble, and the efficiency of replacing the image assembly is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of projection device, in particular to a projection sheet support and a projection device. BACKGROUND

[0002] With the progress of society, the application range of projection device is wider and wider, and is widely applied in teaching, conference, advertisement and other fields. Some existing projection devices can replace projection sheets to switch projection contents, and such projection devices include a tray for mounting the projection sheet, and the projection sheet and the tray are detachably connected to replace the projection sheet with different contents.

[0003] However, in the traditional projection device, the structure of the tray and the cooperation relationship between the tray and the projection sheet are relatively complex, which is inconvenient to operate. CONTENT OF THE INVENTION

[0004] The present application provides a projection sheet support and a projection device.

[0005] In a first aspect, the present application provides a projection sheet support, which comprises a mounting piece, an image assembly and a limiting piece. The mounting piece comprises a main body part and a support part connected with each other. The main body part has a mounting through hole, and the support part is arranged at one end of the mounting through hole and extends towards the axis of the mounting through hole relative to the main body part. The support part defines a first light transmission hole, and the first light transmission hole is in communication with the mounting through hole. The image assembly is embedded in the mounting through hole and abuts against the support part. The image assembly is exposed through the first light transmission hole and is used for transmitting light. The limiting piece is arranged in the mounting through hole. The limiting piece and the support part are respectively located on the opposite sides of the image assembly to jointly clamp the image assembly. The limiting piece has two free ends arranged in opposite directions. The two free ends respectively abut against the inner wall of the main body part. The two free ends can approach each other under the action of an external force, so that the limiting piece is elastically deformed to release the clamping relationship between the limiting piece and the main body part.

[0006] In some optional embodiments, the limiting piece has an annular structure with an opening. The limiting piece further comprises an elastic deformation part. The two free ends are respectively connected to the two ends of the elastic deformation part, and the opening is located between the two free ends. The main body part is provided with a matching part. The matching part is arranged on the inner wall of the mounting through hole. The two free ends are respectively clamped and matched with the matching part to connect the limiting piece to the main body part.

[0007] In some optional embodiments, the matching part comprises a matching groove arranged on the hole wall of the mounting through hole. At least part of the structure of the free end is embedded in the matching groove. In the state that the limiting piece is clamped in the mounting through hole, the two free ends can approach each other under the action of an external force, so that the radial dimension of the limiting piece is reduced.

[0008] In some optional embodiments, the ring structure is a circular ring, and the elastic deformation portion corresponds to a central angle greater than 180°; each free end comprises a poking protrusion connected to one end of the elastic deformation portion, the poking protrusion protrudes in the axial direction of the ring structure relative to the elastic deformation portion, and the two poking protrusions have the same extension direction; and the two poking protrusions can approach each other under the action of an external force to reduce the radial dimension of the elastic deformation portion.

[0009] In some optional embodiments, each free end further comprises an embedding protrusion connected to a side of the elastic deformation portion away from the axis of the ring structure, and the two embedding protrusions are embedded into the matching grooves and abut against the main body portion; at least one of the two embedding protrusions can be disengaged from the matching groove when the two poking protrusions approach each other under the action of an external force.

[0010] In some optional embodiments, the limiting member further comprises a positioning portion connected to the outer periphery of the elastic deformation portion and protruding relative to the elastic deformation portion, and the positioning portion is embedded into the matching groove.

[0011] In some optional embodiments, the free end comprises a stress section and an embedding section, the stress section is connected between the elastic deformation portion and the embedding section, the extension directions of the two embedding sections are opposite relative to the elastic deformation portion, and the two embedding sections are respectively embedded into the matching grooves and abut against the main body portion; at least one of the two embedding sections can be disengaged from the matching groove when the two embedding sections approach each other under the action of an external force carried by the two stress sections.

[0012] In some optional embodiments, in the state that the two embedding sections are respectively embedded into the matching grooves, the two embedding sections define a deflection axis, and the limiting member is rotatably arranged in the mounting through hole around the deflection axis.

[0013] In some optional embodiments, the mounting member further comprises at least one rotation limiting portion protruding from the inner wall of the mounting through hole, and the peripheral structure of the image assembly abuts against the rotation limiting portion and the inner wall of the mounting through hole to limit the rotation of the image assembly relative to the main body portion.

[0014] In some optional embodiments, the mounting member comprises a plurality of meshing teeth arranged in sequence on the outer periphery of the main body portion.

[0015] In some optional embodiments, the slide projector further comprises a mounting bracket having a second light-transmitting hole; the mounting member is mounted on one side of the mounting bracket, the mounting through hole is exposed through the second light-transmitting hole, and the first light-transmitting hole is located at one end of the mounting through hole away from the second light-transmitting hole.

[0016] In some optional embodiments, the projection sheet support further comprises a fixing member covering the side of the mounting member away from the mounting support and exposing the first light-transmitting hole, the fixing member being connected with the mounting support and clamping the mounting member together with the mounting support.

[0017] In a second aspect, the present application provides a projection device, which comprises a housing, a projection lens, a light source module and the projection sheet support described above. The housing is provided with a mounting passage communicating between the interior of the housing and the outside. The projection lens is arranged in the housing. The light source module is located in the interior of the housing and is used for emitting projection light. In the state that the projection sheet support is mounted on the housing, the projection sheet support is arranged in the mounting passage, the projection sheet support is located between the projection lens and the light source module, and the image component and the first light-transmitting hole are sequentially located on the light path of the projection light.

[0018] The present application provides a projection sheet support, which comprises a mounting member, an image component and a limiting member. The mounting member comprises a main body and a supporting part connected with each other. The main body has a sleeve structure and a mounting through hole. The supporting part is located at one end of the mounting through hole, is connected with the edge structure of the one end of the mounting through hole and extends towards the axis of the mounting through hole relative to the main body, so that the supporting part has a stepped structure. The supporting part has a ring structure and defines a first light-transmitting hole. The first light-transmitting hole is located at one end of the mounting through hole and communicates with the mounting through hole. In actual application scenarios, the image component can be embedded into the mounting through hole through the one end of the mounting through hole away from the first light-transmitting hole and abut against the supporting part. The limiting member has two free ends. Then, a user can apply an external force to the limiting member, so that the limiting member is elastically deformed, the two free ends are close to each other, and the size of the limiting member can be embedded into the mounting through hole. In the state that the limiting member is placed into the mounting through hole, the user removes the external force, the limiting member restores the deformation, the two free ends of the limiting member are clamped in the mounting through hole, the limiting member is connected to the main body, and the limiting member and the supporting part are located on two sides of the image component, respectively, and clamping the image component together to stably connect the image component to the mounting member. In the case of switching the image component, the user can apply pressure to the limiting member, the two free ends of the limiting member are close to each other under the action of the external force, so that the size of the limiting member can be removed from the mounting through hole, and then the image component is removed from the mounting passage through the one end of the mounting passage away from the first light-transmitting hole. In the arrangement of the present application, the mounting member and the limiting member clamping the image component together can ensure the position stability of the image component. The user can remove the limiting member from the mounting member by applying an external force to the limiting member, and then release the limiting action of the limiting member on the image component, so that the user can remove the image component. The structure of the limiting member and the mounting member is simplified, the cooperation relationship between them is relatively simple, and they are convenient to disassemble or assemble, which can greatly simplify the steps of replacing the image component, and improve the efficiency of replacing the image component. BRIEF DESCRIPTION OF DRAWINGS

[0019] To more clearly illustrate the technical solution of this application, the drawings used in 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 from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the projection device provided in the embodiments of this application.

[0021] Figure 2 yes Figure 1 The diagram shows the internal structure of the projection device.

[0022] Figure 3 This is a schematic diagram of the structure of the slide holder provided in the embodiment of this application.

[0023] Figure 4 This is a schematic diagram of the structure of the slide tray module provided in the embodiments of this application.

[0024] Figure 5 yes Figure 4 The diagram shows the structural design of the mounting components for the slide tray module.

[0025] Figure 6 yes Figure 4 The diagram shows the structure of the limiting component of the slide tray module.

[0026] Figure 7 yes Figure 5 The diagram shows the structural schematic of the mating part of the mounting component.

[0027] Figure 8 yes Figure 5 The diagram shows a cross-sectional view of the mounting component.

[0028] Figure 9 yes Figure 4 A schematic diagram of another embodiment of the limiting component of the slide tray module shown.

[0029] Figure 10 yes Figure 9 The diagram shows the structure of the limiting component and the mounting component in tandem.

[0030] Figure 11 yes Figure 10 The diagram shows the structure of the limiting member fitting to the image component.

[0031] Figure 12 yes Figure 4 The diagram shows the structure of the mounting through hole of the mounting component.

[0032] Figure 13 yes Figure 4 The diagram shows the structure of the image component of the slide tray module.

[0033] Figure 14 yes Figure 3 The diagram shows the structural components of the slide holder, including the mounting parts, fasteners, and mounting bracket.

[0034] Reference numerals: 1000, projection device; 900, housing; 800, light source module; 700, projection lens; 600, slide holder; 610, mounting bracket; 611, second light-transmitting hole; 620, fixing component; 100, slide tray module; 10, mounting component; 11, main body; 111, mounting through hole; 112, mating part; 1121, mating groove; 113, meshing tooth; 12, support part; 121, first light-transmitting hole; 13, rotation limiting part; 20, image component; 21, slide; 22, transparent clamping piece; 30, limiting component; 31, elastic deformation part; 32, free end; 321, actuating protrusion; 322, embedding protrusion; 323, force-bearing section; 324, embedding section; 33, positioning part. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort are within the scope of protection of the present application.

[0036] Please see Figure 1The embodiment of the present application provides a projection film tray module 100, a projection film support 600 comprising the projection film tray module 100, and a projection device 1000 provided with the projection film support 600. The projection device 1000 is used to form a projection pattern on a projection surface such as a screen, a wall or a ground, to deliver information or attract people, and the projection device 1000 can also take a commodity or an exhibit as a projection target to improve the display effect. The projection pattern formed by the projection device 1000 can remain unchanged on the projection surface or other projection objects. The projection pattern can also be in a state of motion. As an example, the projection device 1000 is installed on an application platform through a driving mechanism such as a swing arm or a mechanical arm, and when the projection device 1000 is in a working state, the driving mechanism can drive the projection device 1000 to move, so as to change the position of the projection pattern on the projection surface or make the projection pattern move between multiple projection surfaces. As another example, the projection device 1000 comprises a projection film and a light source, and when the projection device 1000 is in a working state, the projection film and the light source are in a state of relative motion, so that the projection content in the projection pattern is in a state of continuous motion on the projection surface. In this example, the projection device 1000 can comprise a starry sky lamp, and the projection content in the projection pattern formed by the starry sky lamp can be a small light spot such as a snowflake-shaped or wave dot-shaped light spot, to form a dynamic starry sky effect.

[0037] Please refer to Figure 1 and Figure 2 In the embodiment, the projection device 1000 comprises a housing 900, a light source module 800 and a projection film support 600. The projection film support 600 is detachably mounted on the housing 900. Specifically, the housing 900 in the embodiment is a hollow structure, and the housing 900 is provided with a mounting channel 910 for the projection film support 600 to pass through and move. During the assembly of the projection film support 600 and the housing 900, the structure of the projection film support 600 can gradually extend into the housing 900 through the mounting channel 910 to be mounted on the housing 900, and after the assembly of the projection film support 600 and the housing 900 is completed, the projection film support 600 passes through the mounting channel 910. The light source module 800 is arranged in the interior of the housing 900 and is used to emit projection light as a light source. The projection film support 600 in the embodiment comprises an image assembly 20, which is a carrier of projection content. When the projection film support 600 is mounted on the housing 900, the image assembly 20 is located on the light path of the projection light. After the projection light transmits through the image assembly 20, a projection light beam is formed, which is conducted out of the housing 900 and to a projection surface to form a projection pattern.

[0038] In the embodiment, the projection device 1000 further comprises a projection lens 700, which is installed on the shell wall of the shell 900 to enable the light to be conducted between the inside and outside of the shell 900. The projection lens 700 is located on the side of the projection sheet support 600 away from the light source module 800, i.e. the projection sheet support 600 is located between the light source module 800 and the projection lens 700. The projection light transmits the image assembly 20 to form a projection light beam, which is conducted to the projection lens 700 and transmitted by the projection lens 700 to be conducted to the projection surface to form a projection pattern. The projection lens 700 has the light shaping function of converging light, which can improve the projection effect.

[0039] Please refer to Figure 3 In the embodiment, the projection sheet support 600 comprises a mounting support 610 and a projection sheet tray module 100. The projection sheet tray module 100 is installed on one side of the mounting support 610. The mounting support 610 is used to load the projection sheet tray module 100 and is arranged in the mounting channel 910. In the embodiment, the projection sheet tray module 100 comprises a mounting piece 10 and an image assembly 20. The mounting piece 10 is used to install the image assembly 20. The mounting piece 10 has a first light transmission hole 121. In the state that the projection sheet tray module 100 is installed on the mounting support 610, the axis of the first light transmission hole 121 is substantially parallel to the straight line defined by the transmission path of the projection light. In the state that the image assembly 20 is installed on the mounting piece 10, the first light transmission hole 121 is located on the side of the image assembly 20 away from the light source module 800. At least part of the structure of the image assembly 20 is exposed through the first light transmission hole 121. The projection light is conducted to the image assembly 20 to form a projection light beam. The projection light beam is conducted out of the mounting piece 10 and the projection sheet tray module 100 through the first light transmission hole 121.

[0040] In the embodiment, the mounting support 610 is partially hollow. The hollow part forms a second light transmission hole 611. The axis of the second light transmission hole 611 is substantially parallel to the axis of the first light transmission hole 121. In the state that the projection sheet tray module 100 is connected to the mounting support 610, the second light transmission hole 611 is located on the side of the image assembly 20 away from the first light transmission hole 121. At least part of the structure of the image assembly 20 is exposed through the second light transmission hole 611. The straight line defined by the optical axis of the projection light and the straight line defined by the transmission path of the projection light are substantially coincident. In the direction of the optical axis of the projection light, the first light transmission hole 121 is at least partially arranged opposite to the second light transmission hole 611. The projection light can be conducted to the image assembly 20 through the second light transmission hole 611 and transmitted by the image assembly 20 to form a projection light beam. The projection light beam is conducted out of the projection sheet tray module 100 through the first light transmission hole 121.

[0041] In the embodiment, the slide holder 600 further comprises a fixing member 620, which is located on the side of the slide tray module 100 away from the mounting bracket 610, and is connected with the mounting bracket 610 and clamps the slide tray module 100 together with the mounting bracket 610, so that the slide tray module 100 is stably mounted on the mounting bracket 610. In the state that the fixing member 620 clamps the slide tray module 100 together with the mounting bracket 610, the fixing member 620 covers part of the structure of the slide tray module 100 and exposes at least part of the first light-transmitting hole 121, so that the projection light beam can be conducted out of the slide holder 600 through the first light-transmitting hole 121. In the embodiment, the fixing member 620 is annular structure, and the fixing member 620 covers the edge structure of the slide tray module 100, i.e., the fixing member 620 clamps the edge structure of the slide tray module 100 together with the mounting bracket 610, so as to mount the slide tray module 100 on the mounting bracket 610. In the embodiment, the fixing member 620 and the mounting bracket 610 can be connected by clamping, or a fixing frame such as a screw, a pin, etc. is used to sequentially penetrate the fixing member 620 and the mounting bracket 610, so as to connect the fixing member 620 and the mounting bracket 610.

[0042] Please refer to Figure 4 , Figure 5 and Figure 6 , the slide tray module 100 in the embodiment comprises an image assembly 20 and a mounting member 10 for mounting the image assembly 20, and the mounting member 10 comprises a main body part 11 and a support part 12 connected with each other, the main body part 11 is sleeve-shaped structure, and the main body part 11 has a mounting through hole 111. The support part 12 is connected to the side of the main body part 11 away from the mounting bracket 610, and the support part 12 protrudes towards the axis direction of the mounting through hole 111 relative to the main body part 11, so as to present a stepped structure relative to the mounting through hole 111. In the embodiment, the support part 12 is substantially annular structure, and the support part 12 defines a first light-transmitting hole 121 of the mounting member 10, which is located at the end of the mounting through hole 111 away from the mounting bracket 610, and the first light-transmitting hole 121 is in communication with the mounting through hole 111. In actual application scenarios, the image assembly 20 is embedded in the mounting through hole 111 through the end of the mounting through hole 111 away from the first light-transmitting hole 121, and abuts against the stepped support part 12, and the size of the image assembly 20 is greater than the size of the first light-transmitting hole 121, so that the support part 12 can preliminarily limit the position of the image assembly 20 and prevent the image assembly 20 from falling out of the mounting through hole 111 through the first light-transmitting hole 121.

[0043] In the embodiment, the slide tray module 100 further comprises a limiting member 30, which is arranged in the mounting through hole 111 and used for temporarily fixing the image assembly 20 in the mounting through hole 111. Specifically, the limiting member 30 has two free ends 32 arranged in opposite intervals, and the two free ends 32 are clamped in the mounting through hole 111 respectively to connect the limiting member 30 on the main body 11. In the state that the limiting member 30 is temporarily fixed and connected on the main body 11, the limiting member 30 and the supporting part 12 are respectively located on the two sides opposite to the image assembly 20 and jointly clamp the image assembly 20 to limit the image assembly 20 in the mounting member 10. In the actual application scene, the user can apply pressure to the two free ends 32 of the limiting member 30, and the two free ends 32 approach each other under the action of the external force to make the part between the two free ends 32 of the limiting member 30 elastically deform, and in the process of approaching each other, the free end 32 is separated from the inner wall of the mounting through hole 111 respectively to release the clamping action and the connection relationship between the limiting member 30 and the mounting through hole 111, and the user can take out the limiting member 30 from the mounting through hole 111, and then can push the image assembly 20 through the first light-transmitting hole 121 to separate the image assembly 20 from the supporting part 12 and move out of the mounting through hole 111, and then can replace the image assembly 20 or replace the assembly in the image assembly 20 for recording the projection content.

[0044] In summary, the projection slide tray module 100 provided in the embodiment includes a mounting member 10, an image assembly 20, and a limiting member 30. The mounting member 10 includes a main body portion 11 and a support portion 12 connected to each other. The main body portion 11 is in a sleeve structure and has a mounting through hole 111. The support portion 12 is located at one end of the mounting through hole 111, is connected to the edge structure of one end of the mounting through hole 111, and extends towards the axis of the mounting through hole 111 relative to the main body portion 11, so that the support portion 12 is in a stepped structure. The support portion 12 is generally in a ring structure and defines a first light transmission hole 121 located at one end of the mounting through hole 111 and in communication with the mounting through hole 111. In an actual application scenario, the image assembly 20 can be embedded into the mounting through hole 111 through one end of the mounting through hole 111 away from the first light transmission hole 121 and abut against the stepped support portion 12. Then, a user can apply an external force to the two free ends 32 of the limiting member 30, so that the limiting member 30 is elastically deformed, the two free ends 32 of the limiting member 30 are close to each other, and the size of the limiting member 30 can be embedded into the mounting through hole 111. In the state that the limiting member 30 is placed into the mounting through hole 111, the user removes the external force, the limiting member 30 restores the deformation, and the two free ends 32 of the limiting member 30 are clamped in the mounting through hole 111, so as to connect the limiting member 30 on the main body portion 11. The limiting member 30 and the support portion 12 are respectively located on both sides of the image assembly 20 and jointly clamp the image assembly 20, so as to stably connect the image assembly 20 on the mounting member 10. In the case of switching the image assembly 20, the user can apply a pressure to the two free ends 32 of the limiting member 30, the two ends of the limiting member 30 are close to each other under the action of the external force, so that the size of the limiting member 30 can be removed from the mounting through hole 111, and then the image assembly 20 can be taken out through the first light transmission hole 121 for replacement.

[0045] In the setting of the embodiment, the mounting member 10 and the limiting member 30 jointly clamp the image assembly 20 to ensure the position stability of the image assembly 20. The user can remove the limiting member 30 from the mounting member 10 by applying an external force to the two free ends 32 of the limiting member 30, and then remove the limiting effect of the limiting member 30 on the image assembly 20, so that the user can remove the image assembly 20. The structure of the limiting member 30 and the mounting member 10 is simplified, the cooperation relationship therebetween is relatively simple, and the mounting member 10 and the limiting member 30 are convenient to disassemble or assemble, which can greatly simplify the steps of replacing the image assembly 20, is simple to operate, and improves the efficiency of replacing the image assembly 20.

[0046] Please refer to Figure 2 and Figure 3In the embodiment, the end of the main body 11 towards the mounting bracket 610 is arranged in the second light transmission hole 611, so that the peripheral structure of the second light transmission hole 611 is arranged around the outer periphery of the mounting through hole 111, to facilitate the embedding of the image assembly 20 into the mounting through hole 111, to avoid the structure of the main body 11 from shielding the projection mounting through hole 111 and the first light transmission hole 121, and to facilitate the transmission of the projection light. The arrangement of the main body 11 in the second light transmission hole 611 can limit the radial movement of the mounting member 10 relative to the mounting bracket 610 along the second light transmission hole 611, to improve the stability of the position of the projection sheet tray module 100. In the embodiment, the fixing member 620 is arranged around the outer periphery of the edge structure of the first light transmission hole 121, to facilitate the transmission of the projection light beam. As known from the foregoing, in the arrangement of the embodiment, after the mounting bracket 610, the mounting member 10, the image assembly 20, the limiting member 30 and the fixing member 620 are assembled, the structure of the mounting bracket 610 has little effect on the operation of taking out the image assembly 20, and the user can directly push the image assembly 20 through the first light transmission hole 121 to take out the image assembly 20 from the mounting through hole 111 without taking out the mounting member 10 from the mounting bracket 610, which greatly simplifies the steps of disassembling the image assembly 20.

[0047] Please refer to Figure 6 , Figure 7 and Figure 8In the embodiment, the limiting member 30 is a ring structure with an opening. The limiting member 30 has a radial dimension. In the embodiment, the limiting member 30 is a ring structure. A straight line can be determined as the axis of the limiting member 30. The limiting member 30 is arranged around the axis. The distance between any point on the limiting member 30 and the axis is the radial dimension of the limiting member 30. The limiting member 30 includes an elastic deformation part 31. The elastic deformation part 31 is also a ring structure. The elastic deformation part 31 has an elastic deformation capability. Two free ends 32 are connected to the two ends of the elastic deformation part 31 respectively. The opening of the limiting member 30 is between the two free ends 32. The two free ends 32 can be used as force points for the user to apply force to the elastic deformation part 31. The main body part 11 in the embodiment is provided with a matching part 112. The matching part 112 is arranged on the inner wall of the mounting through hole 111. In the actual application scenario, the user applies force on the two free ends 32. The two free ends 32 are pinched to move close to each other. The elastic deformation part 31 deforms. The size of the opening and the radial dimension of the limiting member 30 are reduced. Until the limiting member 30 can be embedded into the mounting through hole 111. In the state that the limiting member 30 is embedded into the mounting through hole 111, the user removes the external force. The elastic deformation part 31 releases the elastic force. The elastic deformation part 31 gradually changes from the compressed state to the relaxed state. The two free ends 32 move away from each other. The two free ends 32 can be moved to be clamped with the matching part 112 respectively. The limiting member 30 is connected to the main body part 11. In the embodiment, in the state that the two free ends 32 are clamped with the matching part 112 respectively, the elastic deformation part 31 can be completely relaxed without storing elastic force. Or the elastic deformation part 31 can not be completely relaxed to reserve a certain elastic force. The clamping relationship between the free end 32 and the matching part 112 is more stable.

[0048] In the embodiment, the fitting part 112 comprises a fitting groove 1121, which is arranged on the inner wall of the mounting through hole 111 and is recessed relative to the inner part of the mounting through hole 111, so as to avoid the fitting part 112 from hindering the image assembly 20 from being embedded into the mounting through hole 111 and abutting against the supporting part 12. At least part of the structure of the two free ends 32 is embedded into the fitting groove 1121, and the structure of the free end 32 can abut against the inner wall of the fitting groove 1121 or the slot of the fitting groove 1121, so as to ensure the stable position of the limiting part 30 and avoid the movement of the limiting part 30. In the state that the limiting part 30 is clamped in the mounting through hole 111, the two free ends 32 can be close to each other under the action of an external force, so as to reduce the radial dimension of the limiting part 30, and at least one of the two free ends 32 is separated from the fitting part 112, so as to be able to take out the limiting part 30 from the mounting through hole 111. In the embodiment, the fitting groove 1121 is arranged in a ring-shaped groove in the circumferential direction of the mounting through hole 111, which is simple in production process and convenient to process. The ring-shaped fitting groove 1121 makes the limiting part 30 not be limited by the position of the fitting groove 1121 in the mounting through hole 111 when being assembled with the mounting part 10. In the state that the axial direction of the elastic deformation part 31 of the limiting part 30 is substantially parallel to the axial direction of the mounting through hole 111, the limiting part 30 can be embedded into the mounting through hole 111 at any angle and be fitted with the fitting groove 1121, and part of the structure of the elastic deformation part 31 can also be embedded into the fitting groove 1121, so as to make the connection between the limiting part and the main body part 11 more stable. In other embodiments, the fitting part 112 comprises two independent grooves and is respectively used for embedding and fitting with the two free ends 32.

[0049] In the embodiment, the limiting member 30 is a ring structure, the ring structure is a circular ring, the elastic deformation part 31 is also a circular ring, and a central angle corresponding to the elastic deformation part 31 is greater than 180°, so that the limiting member 30 can be kept in the mounting hole 111 and kept in the clamping state with the matching part 112, and the limiting member 30 is prevented from automatically falling out of the mounting hole 111. In the embodiment, each free end 32 includes a poking protrusion 321, the poking protrusion 321 is connected to the elastic deformation part 31, and two poking protrusions 321 are respectively connected to two ends of the elastic deformation part 31. The poking protrusion 321 protrudes in the axial direction of the ring structure relative to the elastic deformation part 31, and the extension directions of the two poking protrusions 321 are the same. In the state that the mounting member 10, the image assembly 20 and the limiting member 30 are assembled, the poking protrusion 321 extends in the direction away from the image assembly 20 relative to the elastic deformation part 31, so that the user can contact the poking protrusion 321 and apply an external force to the two poking protrusions 321 to pinch the two poking protrusions 321 close to each other, so that the radial dimension of the elastic deformation part 31 is reduced, and in the process, at least one free end 32 is moved out of the matching groove, so that the connection relationship between the limiting member 30 and the mounting member 10 is released, and the user can take out the limiting member 30 from the mounting hole 111. In the embodiment, the free end 32 refers to the end structure of the circular ring-shaped limiting member 30, and the free end 32 can include the poking protrusion 321 and can also include the part connected between the elastic deformation part 31 and the poking protrusion 321.

[0050] In the embodiment, each free end 32 further comprises an embedded protrusion 322, and two embedded protrusions 322 are respectively located at two ends of the elastic deformation part 31. The embedded protrusion 322 is connected to one side of the elastic deformation part 31 away from the axis of the ring structure, and the embedded protrusion 322 extends away from the axis of the elastic deformation part 31 relative to the elastic deformation part 31. In the state that the limiting piece 30 is installed in the mounting hole 111, the two embedded protrusions 322 are respectively embedded in the matching groove, and the two embedded protrusions 322 respectively abut against the main body 11, that is, the embedded protrusion 322 abuts against the side wall of the matching groove facing the axis of the mounting hole 111, so that the state of the limiting piece 30 in the mounting hole 111 is relatively stable. In the case that the user pinches the two actuating protrusions 321, the two actuating protrusions 321 are close to each other under the action of external force, and the two embedded protrusions 322 carried by the two actuating protrusions 321 are also close to each other. At least one of the two embedded protrusions 322 can be separated from the matching groove, so as to release the connection relationship between the limiting piece 30 and the mounting piece 10. In the embodiment, the elastic deformation part 31 is a flat ring structure, and in the state that the embedded protrusion 322 is embedded in the matching groove, the elastic deformation part 31 near the embedded protrusion 322 can also be embedded in the matching groove, and other parts of the elastic deformation part 31 can also be embedded in the matching groove, so that the position of the limiting piece 30 in the mounting hole 111 is stable and not easy to move or fall off, and the limiting action of the limiting piece 30 on the image assembly 20 is ensured. In the embodiment, the limiting piece 30 is approximately in the shape of “C”, and in the state that the limiting piece 30 is connected to the mounting piece 10, the limiting piece 30 covers the peripheral structure of the image assembly 20. The limiting piece 30 has less shielding on the image assembly 20, and the structure of the image assembly 20 has more exposed parts relative to the limiting piece 30 to receive the projection light.

[0051] In the embodiment, the limiting piece 30 further comprises a positioning part 33, and the positioning part 33 is connected to the outer periphery of the elastic deformation part 31 and protrudes relative to the elastic deformation part 31. In the embodiment, the positioning part 33 is in the shape of a bump, and the positioning part 33 is approximately located at the intermediate position in the circumferential direction of the elastic deformation part 31. In the actual application scenario, the positioning part 33 is embedded in the matching groove 1121 to preliminarily connect the limiting piece 30 and the mounting piece 10, and the positioning part 33 abuts against the inner wall of the matching groove 1121 to support the limiting piece 30, so as to facilitate the user to pinch the two actuating protrusions 321. In the embodiment, the material of the limiting piece 30 includes metal or plastic, and the material of the limiting piece 30 itself has little or no elasticity, but the bending structure of the limiting piece 30 makes it have elasticity.

[0052] Please refer to Figure 9 , Figure 10 and Figure 11In another embodiment of the present application, the free end 32 comprises force receiving segments 323 and embedding segments 324, the force receiving segments 323 are connected between the elastic deformation part 31 and the embedding segments 324, and the two embedding segments 324 are opposite to each other relative to the extending direction of the elastic deformation part 31. In this embodiment, the elastic deformation part 31 is arc-shaped, and the two force receiving segments 323 are connected at the two ends of the elastic deformation part 31 respectively, and the two force receiving segments 323 are located at the concave side of the elastic deformation part 31, and the distance between the two ends of the elastic deformation part 31 away from the two force receiving segments 323 is less than the distance between the two ends of the elastic deformation part 31 connected to the two force receiving segments 323, and the two ends of the elastic deformation part 31 away from the two force receiving segments 323 define the opening of the limiting part 30. The two embedding segments 324 are connected to the two force receiving segments 323 respectively, and each embedding segment 324 extends away from the opening relative to the corresponding force receiving segment 323. The limiting part 30 in this embodiment is a wire or plastic wire structure, which is bent to form the elastic deformation part 31, the force receiving segments 323 and the embedding segments 324 as described above, and in this embodiment, the limiting part 30 is generally in the shape of “Ω”. In other embodiments, the limiting part 30 can be a bent sheet structure. In this embodiment, the limiting part 30 is slender in structure, and has less shielding to the image assembly 20, and the image assembly 20 has more exposed parts relative to the limiting part 30 to receive the projected light.

[0053] In this embodiment, the limiting part 30 is arranged in the mounting hole 111, and the two embedding segments 324 are embedded into the fitting grooves 1121 respectively, and abut against the main body 11, i.e. abut against the inner walls of the fitting grooves 1121, to connect the limiting part 30 to the mounting part 10. The user can apply an external force to the two force receiving segments 323, and the elastic deformation part 31 is bent to increase the bending degree after being subjected to the force, and the two force receiving segments 323 are close to each other after being pinched, and carry the two embedding segments 324 to be close to each other, and at least one of the two embedding segments 324 can be disengaged from the fitting groove 1121 in the case that the two embedding segments 324 are carried to be close to each other by the two force receiving segments 323 under the action of the external force, so as to release the connection between the limiting part 30 and the mounting part 10 and take out the limiting part 30 from the mounting hole 111.

[0054] Please refer to Figure 10 and Figure 11In the embodiment, the two embedded segments 324 are respectively embedded into the fitting grooves 1121, and the two embedded segments 324 are respectively abutted on the main body 11. Two positions where the two embedded segments 324 are abutted on the main body 11 define a deflection axis P. The limiting piece 30 is rotatably arranged on the mounting piece 10 around the deflection axis P, so that the overall structure of the limiting piece 30 is substantially located in the mounting through hole 111, avoiding the structure of the limiting piece 30 extending out of the mounting through hole 111, reducing the probability of collision between the structure of the limiting piece 30 and other structures of the projection device 1000. The elastic deformation part 31 of the limiting piece 30 can be rotated to fit the image assembly 20, so as to limit the axial movement of the image assembly 20 along the mounting through hole 111.

[0055] Referring to Figure 12 and Figure 13 In the embodiment, the inner wall of the mounting through hole 111 is substantially a cylindrical surface, which is a surface of revolution. The mounting piece 10 further comprises at least one rotation limiting part 13 arranged on the inner wall of the mounting through hole 111. The rotation limiting part 13 protrudes towards the axis of the mounting through hole 111 relative to the inner wall of the mounting through hole 111. The surface of the rotation limiting part 13 combined with the inner wall of the mounting through hole 111 is a non-surface of revolution. In the embodiment, the edge structure of the image assembly 20 is respectively abutted on the rotation limiting part 13 and part of the inner wall of the mounting through hole 111, so as to limit the rotation of the image assembly 20 around the axis of the mounting through hole 111 in the mounting through hole 111. In other embodiments, the inner wall of the mounting through hole 111 can be a non-surface of revolution, such as a prismatic surface or an elliptical cylindrical surface.

[0056] In the embodiment, the image assembly 20 can comprise two transparent clamping sheets 22 and a projection sheet 21. The projection sheet 21 records projection content, and the two transparent clamping sheets 22 are respectively arranged on two sides of the projection sheet 21 and jointly clamp the projection sheet 21. The two transparent clamping sheets 22 make the image assembly 20 have a certain hardness to facilitate installation. The two sides of the projection sheet 21 are covered by the transparent clamping sheets 22, which can avoid scratching the surface of the projection sheet 21 and ensure the projection effect. In the embodiment, the color of the transparent projection sheet 21 can be set according to actual projection requirements. The material of the transparent projection sheet 21 can include glass, resin, etc.

[0057] Referring to Figure 13 and Figure 14In the present embodiment, the mounting member 10 further comprises a plurality of engaging teeth 113 arranged in sequence on the outer periphery of the main body 11. Thus, the mounting member 10 in the present embodiment is a gear structure. The projection device 1000 in the present embodiment further comprises a rotating driving member, such as a servo motor, a step motor, etc. The rotating driving member is arranged inside the housing 900 and engages with the plurality of engaging teeth 113 on the outer periphery of the mounting member 10 to drive the gear structure and the image assembly 20 to rotate, so that the projection content in the projection pattern is constantly rotated to form a dynamic starry sky projection effect. In some embodiments, the optical axis of the projection light rays can coincide with the rotation axis of the gear structure, so that the projection pattern on the projection surface is rotated around a fixed axis, and the projection content of the projection pattern remains unchanged. In other embodiments, the optical axis of the projection light rays does not coincide with the rotation axis of the gear structure, and the projection content recorded by different parts of the projection sheet 21 is different. During the rotation of the gear structure, the projection light beam can be transmitted to different positions on the projection sheet 21. Thus, in such embodiments, the projection content in the projection pattern is constantly changed to be able to exhibit more projection content.

[0058] In the present embodiment, the gear structure (i.e. the mounting member 10) is mounted on the mounting bracket 610, and part of the structure of the gear structure protrudes radially from the mounting bracket 610, so that part of the engaging teeth 113 extends out of the mounting bracket 610. As mentioned above, the fixing member 620 is a ring structure, and the fixing member 620 covers the peripheral structure of the gear structure to jointly clamp the gear structure with the mounting bracket 610. In the present embodiment, the fixing member 620 is an incomplete ring structure, and the fixing member 620 has a gap. In the state that the fixing member 620 is connected to the mounting bracket 610, part of the engaging teeth 113 of the gear structure is exposed relative to the fixing member 620. The part of the engaging teeth 113 of the gear structure exposed relative to the fixing member 620 and the part of the engaging teeth 113 of the gear structure extending out of the mounting bracket 610 are the same part of the engaging teeth 113. In the arrangement of the present embodiment, part of the engaging teeth 113 extends out of the mounting bracket 610 and is exposed relative to the fixing member 620, so as to facilitate the engagement of the rotating driving member with the gear structure.

[0059] The application provides a projection sheet tray module 100, which comprises a mounting piece 10, an image assembly 20 and a limiting piece 30. The mounting piece 10 comprises a main body part 11 and a supporting part 12 which are connected with each other. The main body part 11 is in a sleeve structure and has a mounting through hole 111. The supporting part 12 is located at one end of the mounting through hole 111, is connected with the edge structure of one end of the mounting through hole 111 and extends towards the axis of the mounting through hole 111 relative to the main body part 11, so that the supporting part 12 is in a stepped structure. The supporting part 12 is in a ring structure and defines a first light transmission hole 121 which is located at one end of the mounting through hole 111 and communicates with the mounting through hole 111. In actual application scenarios, the image assembly 20 can be embedded into the mounting through hole 111 through one end of the mounting through hole 111 away from the first light transmission hole 121 and abuts against the stepped supporting part 12. Then, a user can apply an external force to the limiting piece 30, so that the limiting piece 30 is elastically deformed, the two ends of the limiting piece 30 are close to each other, and the size of the limiting piece 30 can be embedded into the mounting through hole 111. When the limiting piece 30 is placed into the mounting through hole 111, the user removes the external force, the limiting piece 30 restores the deformation, the two ends of the limiting piece 30 are clamped in the mounting through hole 111 respectively, the limiting piece 30 is connected on the main body part 11, the limiting piece 30 and the supporting part 12 are located on both sides of the image assembly 20 respectively and jointly clamp the image assembly 20, so that the image assembly 20 is stably connected on the mounting piece 10. When it is necessary to switch the projection assembly, the user can apply a pressure to the limiting piece 30, the two ends of the limiting piece 30 are close to each other under the action of the external force, so that the size of the limiting piece 30 can be removed from the mounting through hole 111, and then the image assembly 20 can be taken out through the first light transmission hole 121 for replacement. In the arrangement of the embodiment, the mounting piece 10 and the limiting piece 30 jointly clamp the image assembly 20, so that the position of the image assembly 20 is stable. The user can take down the limiting piece 30 from the mounting piece 10 by applying an external force to the limiting piece 30, and then the limiting effect of the limiting piece 30 on the image assembly 20 is removed, so that the user can take down the image assembly 20. The structure of the limiting piece 30 and the mounting piece 10 is simple, the cooperation relationship between the limiting piece 30 and the mounting piece 10 is simple, the limiting piece 30 and the mounting piece 10 are convenient to disassemble or assemble, the steps of replacing the image assembly 20 can be greatly simplified, the operation is simple, and the efficiency of replacing the image assembly 20 is improved.

[0060] In this application specification, certain terms are used to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. The specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "including but not limited to"; "generally" means that those skilled in the art can solve the technical problem within a certain margin of error and basically achieve the technical effect.

[0061] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of simplifying the description of this application and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0062] In this application, unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or merely surface contact. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A slide holder, characterized in that The mounting piece comprises a body part and a support part connected to each other, the body part has a mounting hole, the support part is arranged at one end of the mounting hole, the support part extends towards the axis of the mounting hole relative to the body part, and the support part defines a first light transmission hole communicating with the mounting hole. The image assembly is embedded in the mounting hole and abuts against the support part, and is exposed through the first light transmission hole and used for transmitting light. The limiting piece is arranged in the mounting hole, and the limiting piece and the support part are respectively located on two opposite sides of the image assembly to jointly clamp the image assembly; the limiting piece has two free ends arranged in opposite directions, and the two free ends respectively abut against the inner wall of the body part; the two free ends can approach each other under the action of an external force, so that the limiting piece is elastically deformed to release the clamping relationship between the limiting piece and the body part. The limiting piece has an open ring structure, and further comprises an elastic deformation part, the two free ends are respectively connected to two ends of the elastic deformation part, and the opening is located between the two free ends.

2. The projector screen of claim 1, wherein, The body part is provided with a matching part arranged on the inner wall of the mounting hole, and the two free ends are respectively clamped and matched with the matching part to connect the limiting piece to the body part. The matching part comprises a matching groove arranged on the hole wall of the mounting hole, and at least part of the structure of the free end is embedded in the matching groove; in the state that the limiting piece is clamped in the mounting hole, the two free ends can approach each other under the action of an external force, so that the radial dimension of the limiting piece is reduced.

3. The projector screen of claim 2, wherein, The ring structure is a circular ring, and the central angle corresponding to the elastic deformation part is greater than 180°.

4. The projector screen of claim 3, wherein, Each free end comprises a knob connected to one end of the elastic deformation part, the knob protrudes in the axial direction of the ring structure relative to the elastic deformation part, and the extension directions of the two knobs are the same. The two knobs can approach each other under the action of an external force to reduce the radial dimension of the elastic deformation part. Each free end further comprises an embedded protrusion connected to one side of the elastic deformation part away from the axis of the ring structure, and the two embedded protrusions are respectively embedded in the matching groove and abut against the body part.

5. The projector screen of claim 4, wherein, At least one of the two embedded protrusions can be separated from the matching groove when the two knobs approach each other under the action of an external force. The limiting piece further comprises a positioning part connected to the outer periphery of the elastic deformation part and protruding relative to the elastic deformation part, and the positioning part is embedded in the matching groove.

6. The projector screen of claim 3, wherein, The free end comprises a force receiving segment and an embedded segment, the force receiving segment is connected between the elastic deformation part and the embedded segment, the extension directions of the two embedded segments relative to the elastic deformation part are opposite, and the two embedded segments are respectively embedded in the matching groove and abut against the body part.

7. The projector screen of claim 3, wherein, ​ At least one of the two embedding sections is capable of being disengaged from the matching groove when the two embedding sections are brought closer to each other under the action of an external force.

8. The projector screen of claim 7, wherein, In a state where the two embedding sections are respectively embedded into the matching groove, the two embedding sections define a deflection axis, and the limiting member is rotatably arranged in the mounting through hole about the deflection axis.

9. The projector screen of any of claims 1 to 8, wherein, The mounting member further comprises at least one rotation limiting portion, the rotation limiting portion is protruded from the inner wall of the mounting through hole, and the peripheral structure of the image assembly is respectively in abutment with the rotation limiting portion and the inner wall of the mounting through hole to limit the rotation of the image assembly relative to the main body portion.

10. The projector screen of any of claims 1 to 8, wherein, The mounting member comprises a plurality of engagement teeth, and the plurality of engagement teeth are sequentially arranged on the outer periphery of the main body portion.

11. The projector screen of any of claims 1 to 8, wherein, The projection sheet support further comprises a mounting support, the mounting support has a second light transmission hole; the mounting member is mounted on one side of the mounting support, the mounting through hole is exposed via the second light transmission hole, and the first light transmission hole is located at one end of the mounting through hole away from the second light transmission hole.

12. The projector screen of claim 11, wherein, The projection sheet support further comprises a fixing member, the fixing member covers one side of the mounting member away from the mounting support and exposes the first light transmission hole, the fixing member is connected with the mounting support and clamps the mounting member together with the mounting support.

13. A projection apparatus, characterized by comprising: Comprise: a housing, the housing is provided with a mounting channel for communication between the inside of the housing and the outside; a projection lens, the projection lens is arranged in the housing; a light source module, the light source module is located in the inside of the housing and is used for emitting projection light; and The projection sheet support according to any one of claims 1 to 12, in a state where the projection sheet support is mounted on the housing, the projection sheet support is arranged in the mounting channel, and the projection sheet support is located between the projection lens and the light source module.

Images