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 support, a projection sheet and a limiting cover, and the mounting support is provided with a light transmission channel; the screen sheet is detachably arranged on the mounting bracket, and at least part of the structure of the screen sheet is exposed through the light-transmitting channel; the limiting cover is detachably connected to the mounting bracket and clamps the projection sheet together with the mounting bracket; the limiting cover comprises a connecting part and at least two limiting parts, the connecting part is detachably connected to the mounting support, one end of each limiting part is connected to the connecting part, and the other end of each limiting part elastically abuts against the screen sheet to limit movement of the screen sheet. The limiting part elastically deforms under the action of external force so as to change the size of the mounting channel, and the projection light penetrates through the mounting channel and the projection sheet and is transmitted out of the light-transmitting channel. In the embodiment of the invention, the mounting bracket and the limiting cover do not need to be disassembled, so that the steps of mounting, taking down or replacing the screen sheet can be simplified, and the working efficiency is improved.

Description

TECHNICAL FIELD

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

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

[0003] However, in the conventional projection device, the structure of the projection device needs to be disassembled to a large extent when the projection sheet is mounted or removed, so that the steps of replacing the projection sheet are more cumbersome and the efficiency is lower. UTILITY MODEL CONTENT

[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 support, a projection sheet and a limiting cover. The mounting support is provided with a light transmission channel. The projection sheet is detachably arranged on the mounting support, and at least part of the structure of the projection sheet is exposed through the light transmission channel. The limiting cover is detachably connected to the mounting support and clamps the projection sheet together with the mounting support. The limiting cover comprises a connecting portion and at least two limiting portions. The connecting portion is detachably connected to the mounting support. One end of the limiting portion is connected to the connecting portion, and the other end elastically abuts against the projection sheet to limit the movement of the projection sheet. The two limiting portions are arranged at intervals to form a mounting channel. The limiting portion elastically deforms under the action of an external force to change the size of the mounting channel. Projection light passes through the mounting channel and the projection sheet and is transmitted out of the light transmission channel.

[0006] In some optional embodiments, the limiting portion comprises a connecting end and a matching end connected to each other, and the connecting end is connected to the connecting portion. The number of limiting portions is greater than two, and the matching ends of the plurality of limiting portions are arranged around the axis of the light transmission channel to jointly define the mounting channel. In the state that the limiting cover is mounted on the mounting support, when the size of the mounting channel expands, the mounting channel allows the projection sheet to pass through so that the projection sheet moves to between the limiting cover and the mounting support.

[0007] In some optional embodiments, the side of the matching end away from the mounting support is provided with a matching chamfer or a matching fillet, and / or the side of the matching end towards the mounting support is provided with a matching chamfer or a matching fillet.

[0008] In some optional embodiments, the connecting portion is arranged around the axis of the light transmission channel, the limiting portion comprises a deformation segment and an abutting segment, the deformation segment extends along the circumference of the connecting portion and is spaced from the connecting portion, one end of the deformation segment is connected to the connecting portion, and the other end is connected to the abutting segment, and the abutting segment is used to abut against the projection sheet to change the size of the mounting channel by the pushing force applied by the projection sheet.

[0009] In some optional embodiments, the connecting portion comprises a connecting body and a first matching portion connected to each other, and the limiting portion is connected to the connecting body; the mounting bracket is provided with a second matching portion, and the first matching portion and the second matching portion are detachably connected.

[0010] In some optional embodiments, one of the first matching portion and the second matching portion comprises a buckle, and the other of the first matching portion and the second matching portion comprises a clamping groove, and the buckle and the clamping groove are clamped and matched.

[0011] In some optional embodiments, the projection sheet bracket further comprises a heat dissipation member, the heat dissipation member is arranged on the mounting bracket, and the heat dissipation member is in contact with the surface of the projection sheet.

[0012] In some optional embodiments, the heat dissipation member is provided with a light transmission hole, the axis direction of the light transmission hole is the same as the axis direction of the light transmission channel, and the projection sheet is embedded in the light transmission hole.

[0013] In some optional embodiments, the light transmission hole is a stepped hole, a stepped surface is arranged in the light transmission hole, and the projection sheet is stacked on the stepped surface.

[0014] In some optional embodiments, the projection sheet bracket is applied to a projection device comprising a driving mechanism; the outer periphery of the heat dissipation member is sequentially arranged with a plurality of teeth, the heat dissipation member is rotatably arranged in the light transmission channel, the plurality of teeth are in transmission connection with the driving mechanism, and / or the heat dissipation member comprises a metal heat conduction structure.

[0015] In a second aspect, the present application provides a projection device, which comprises a housing, a light source module, and the projection sheet bracket described above, the housing is provided with a through channel and a light exit window, which are in communication with the inside of the housing and the outside; the light source module is located in the inside of the housing and is used to emit projection light; the projection sheet bracket extends into or out of the inside of the housing through the through channel, in the state that the projection sheet bracket is mounted in the housing, the projection sheet bracket is located between the light exit window and the light source module, and the projection sheet and the light exit window are sequentially located on the light path of the projection light.

[0016] This application provides a slide holder, which includes a mounting bracket, a limiting cover, and a slide. The slide is generally located between the mounting bracket and the limiting cover. The mounting bracket and the limiting cover are connected and together clamp the slide, so that the slide is stably mounted on the mounting bracket. The mounting bracket has a light-transmitting channel for exposing at least a portion of the slide's structure. The limiting cover includes a connecting portion and at least two limiting portions. The connecting portion is connected to the mounting bracket to fix the limiting cover to the mounting bracket. The two limiting portions are connected to the connecting portion and are spaced apart to form a mounting channel. At least a portion of the slide's structure is exposed through the mounting channel. Therefore, in this embodiment, the mounting channel is used for both the slide and the projection light to pass through. The projection light passes through the mounting channel and is conducted to the slide, transmitting through the slide to form a projection beam. The projection beam can be conducted out through the light-transmitting channel. When the slide is installed between the mounting bracket and the limiting cover, one end of the limiting part is connected to the connecting part, and the other end elastically abuts against the slide to limit the movement of the slide, thereby preventing the slide from moving out of the space between the mounting bracket and the limiting cover.

[0017] In this embodiment, the limiting part is movably connected to the connecting part. When subjected to external force, the limiting part can elastically deform and move relative to the connecting part, thereby changing the size of the mounting channel. This allows the projector to pass through the mounting channel and move between the mounting bracket and the limiting cover for installation, or allows the projector to pass through the mounting channel and move to the side of the limiting cover away from the mounting bracket for removal. With this embodiment, the size of the mounting channel can be changed, and the projector can easily pass through the mounting channel by cooperating with the limiting part, making operation easy. It eliminates the need to disassemble the mounting bracket and the limiting cover, simplifying the steps of installing, removing, or replacing the projector and improving work efficiency. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the projection device provided in the embodiments of this application.

[0020] Figure 2 yes Figure 1 The diagram shows the positional relationship of some components in the projection device.

[0021] Figure 3 This is a schematic diagram of the structure of the slide holder provided in the embodiment of this application.

[0022] Figure 4 is a schematic view of the back structure of the projection sheet support. Figure 3

[0023] Figure 5 is a schematic view of the limiting cover of the projection sheet support. Figure 3

[0024] Figure 6 Figure 5 is a schematic view of the limiting part of the limiting cover.

[0025] Figure 7 Figure 3 is a schematic view of the heat dissipation part of the projection sheet support.

[0026] Figure 8 Figure 7 is a schematic view of the assembly of the mounting support and the heat dissipation part.

[0027] Figure 9 Figure 7 is a schematic view of the step surface of the heat dissipation part.

[0028] Figure 10 Figure 3 is a schematic view of the notch of the mounting support of the projection sheet support.

[0029] Fig. 1 is a schematic view of a projection device according to an embodiment of the present application; Fig. 2 is a schematic view of a shell of the projection device according to an embodiment of the present application; Fig. 3 is a schematic view of a light source module of the projection device according to an embodiment of the present application; Fig. 4 is a schematic view of a projection lens of the projection device according to an embodiment of the present application; Fig. 5 is a schematic view of a converging assembly of the projection device according to an embodiment of the present application; Fig. 6 is a schematic view of a projection sheet support of the projection device according to an embodiment of the present application; Fig. 7 is a schematic view of a mounting support of the projection sheet support according to an embodiment of the present application; Fig. 8 is a schematic view of a limiting cover of the projection sheet support according to an embodiment of the present application; Fig. 9 is a schematic view of a limiting part of the limiting cover according to an embodiment of the present application; Fig. 10 is a schematic view of a heat dissipation part of the projection sheet support according to an embodiment of the present application; Fig. 11 is a schematic view of the assembly of the mounting support and the heat dissipation part according to an embodiment of the present application; Fig. 12 is a schematic view of a step surface of the heat dissipation part according to an embodiment of the present application; Fig. 13 is a schematic view of a notch of the mounting support according to an embodiment of the present application; Fig. 14 is a schematic view of a projection sheet according to an embodiment of the present application; Fig. 15 is a schematic view of a projection device according to another embodiment of the present application; Fig. 16 is a schematic view of a shell of the projection device according to another embodiment of the present application; Fig. 17 is a schematic view of a light source module of the projection device according to another embodiment of the present application; Fig. 18 is a schematic view of a projection lens of the projection device according to another embodiment of the present application; Fig. 19 is a schematic view of a converging assembly of the projection device according to another embodiment of the present application; Fig. 20 is a schematic view of a projection sheet support of the projection device according to another embodiment of the present application; Fig. 21 is a schematic view of a mounting support of the projection sheet support according to another embodiment of the present application; Fig. 22 is a schematic view of a limiting cover of the projection sheet support according to another embodiment of the present application; Fig. 23 is a schematic view of a limiting part of the limiting cover according to another embodiment of the present application; Fig. 24 is a schematic view of a heat dissipation part of the projection sheet support according to another embodiment of the present application; Fig. 25 is a schematic view of the assembly of the mounting support and the heat dissipation part according to another embodiment of the present application; Fig. 26 is a schematic view of a step surface of the heat dissipation part according to another embodiment of the present application; Fig. 27 is a schematic view of a notch of the mounting support according to another embodiment of the present application; Fig. 28 is a schematic view of a projection sheet according to another embodiment of the present application; Fig. 29 is a schematic view of a projection device according to another embodiment of the present application; Fig. 30 is a schematic view of a shell of the projection device according to another embodiment of the present application; Fig. 31 is a schematic view of a light source module of the projection device according to another embodiment of the present application; Fig. 32 is a schematic view of a projection lens of the projection device according to another embodiment of the present application; Fig. 33 is a schematic view of a converging assembly of the projection device according to another embodiment of the present application; Fig. 34 is a schematic view of a projection sheet support of the projection device according to another embodiment of the present application; Fig. 35 is a schematic view of a mounting support of the projection sheet support according to another embodiment of the present application; Fig. 36 is a schematic view of a limiting cover of the projection sheet support according to another embodiment of the present application; Fig. 37 is a schematic view of a limiting part of the limiting cover according to another embodiment of the present application; Fig. 38 is a schematic view of a heat dissipation part of the projection sheet support according to another embodiment of the present application; Fig. 39 is a schematic view of the assembly of the mounting support and the heat dissipation part according to another embodiment of the present application; Fig. 40 is a schematic view of a step surface of the heat dissipation part according to another embodiment of the present application; Fig. 41 is a schematic view of a notch of the mounting support according to another embodiment of the present application; Fig. 42 is a schematic view of a projection sheet according to another embodiment of the present application. DETAILED DESCRIPTION

[0030] In order to make the personnel in the art 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 drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the personnel in the art without creative labor are within the protection scope of the present application. ​​​​​​​

[0031] Please refer to Figure 1 and Figure 2 The embodiments of the present application provide a projection sheet support 100 and a projection device 1000 provided with the projection sheet support 100. The projection device 1000 is used to form a projection pattern on a projection surface such as a screen, a wall, a ground, etc., for delivering information or attracting crowds, etc. 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, a mechanical arm, etc.) in a working state. The driving mechanism can drive the projection device 1000 to move to change the position of the projection pattern on the projection surface or to move the projection pattern between multiple projection surfaces. As another example, the projection device 1000 is in a static state relative to an application environment in a working state. The projection light source in the projection device 1000 is in a state of motion to make the projection pattern on the projection surface in a state of continuous motion. In this example, the projection device 1000 can include a starry sky lamp. The projection content in the projection pattern formed by the starry sky lamp can be a small light spot such as a snowflake-shaped light spot or a wave dot-shaped light spot to form a dynamic starry sky effect.

[0032] In the embodiments, the projection device 1000 further includes a housing 900, a projection sheet support 100, and a light source module 800. The housing 900 is a hollow structure. The housing 900 is provided with a penetrating passage 910. The projection sheet support 100 is independent of the housing 900. The projection sheet support 100 can include a projection sheet 20 which is a carrier of projection content. The projection sheet support 100 can penetrate the penetrating passage 910 and be installed on the housing 900 so that most of the structure (such as the projection sheet 20) of the projection sheet support 100 is located inside the housing 900. The light source module 800 is arranged inside the housing 900 and is used to emit projection light. The housing 900 is provided with a light exit window 920. In a state where the projection sheet support 100 is installed on the housing 900, the projection sheet support 100 is located approximately between the light exit window 920 and the light source module 800. The projection sheet 20 on the projection sheet support 100 and the light exit window 920 are sequentially located on the light path of the projection light.

[0033] In an actual application scenario, the light source module 800 emits projection light and conducts the projection light to the projection sheet 20. After the projection light transmits through the projection sheet 20, a projection light beam is formed. The projection light beam is conducted out of the shell 900 through the light exit window 920 to form a projection pattern on a projection surface. In some embodiments, the projection device 1000 further includes a projection lens 700 installed on the light exit window 920. After the projection light beam transmits through the projection lens 700, the projection light beam is conducted to the projection surface. The projection lens 700 can shape and converge the projection light beam to improve the projection effect of the projection device 1000. In the present embodiment, the projection sheet support 100 is detachably installed on the shell 900. When it is necessary to replace the projection content, the projection sheet support 100 can be pulled out of the shell 900. The projection sheet support 100 is arranged in the through channel 910 and gradually pulled out of the shell 900. Then, a different projection sheet 20 is replaced.

[0034] In the present embodiment, the projection device 1000 can further include a converging assembly 600 arranged on the light path of the projection light between the light source module 800 and the projection sheet 20 assembly. The converging assembly 600 is used to converge the projection light emitted by the light source module 800 to make the projection light more concentrated, reduce the loss of the projection light, improve the brightness of the projection pattern, and make the projection device 1000 have a better projection effect. In the present embodiment, the converging assembly 600 includes at least two convex lenses arranged in sequence and at intervals on the light path of the projection light between the light source module 800 and the projection sheet 20 assembly. The two convex lenses include a first convex lens 610 and a second convex lens 620. The first convex lens 610 is located between the second convex lens 620 and the light source module 800. The first convex lens 610 has a stronger converging ability. The first convex lens 610 is closer to the light source module 800 relative to the second convex lens 620. The first convex lens 610 can converge the projection light in a state that the light path of the projection light is short, and can reduce the scattering of the projection light. The second convex lens 620 converges the projection light again on the basis of the converging effect of the first convex lens 610. In the present embodiment, the two convex lenses converge the projection light twice, which can greatly utilize the projection light and reduce the loss of the projection light. In other embodiments, the converging assembly 600 can include three or more convex lenses, and can also include other optical elements having a converging light function, such as a reflecting cup, a curved mirror, etc. In the present embodiment, the light source module 800 can include an LED lamp bead or a laser lamp. The LED lamp bead can be a multi-color LED lamp bead to make the projection light emitted by the light source module 800 have multiple colors and be switchable to enrich the visual effect of the projection pattern.

[0035] Please refer to Figure 3 and Figure 4In the embodiment, the projection sheet support 100 comprises the projection sheet 20, the mounting support 10 and the limiting cover 30. The mounting support 10 forms the structural outline of the projection sheet support 100. The projection sheet support 100 is mounted on the mounting support 10. The limiting cover 30 is also mounted on the mounting support 10. The limiting cover 30 is located on the same side of the mounting support 10 as the projection sheet 20. The limiting cover 30 is connected to the mounting support 10. The limiting cover 30 can hold the projection sheet 20 together with the mounting support 10 to stabilize the state of the projection sheet 20 relative to the mounting support 10 and ensure the projection effect. In the embodiment, the mounting support 10 and the limiting cover 30 can directly abut the two opposite sides of the projection sheet 20 to hold the projection sheet 20. The mounting support 10 (or the limiting cover 30) can also indirectly abut the projection sheet 20, for example, other components are arranged between the mounting support 10 and the projection sheet 20. The mounting support 10 indirectly abuts the side of the projection sheet 20 away from the limiting cover 30 through the other components. In the embodiment, the mounting support 10 is provided with a light-transmitting passage 11. At least part of the structure of the projection sheet 20 is exposed through the light-transmitting passage 11 in the state of being mounted on the mounting support 10. The light-transmitting passage 11 is a hole-like or groove-like structure with a certain space for allowing light to pass through. The projection sheet 20 can be located inside the light-transmitting passage 11 or outside the light-transmitting passage 11, which is specifically arranged according to the components of the projection sheet support 100 and the projection requirements of the embodiment.

[0036] In the embodiment, the limiting cover 30 comprises a connecting portion 31 and two limiting portions 32. The connecting portion 31 is used to connect with the mounting support 10. The two limiting portions 32 are respectively connected to different positions of the connecting portion 31 so that the two limiting portions 32 are spaced apart. The two limiting portions 32 form a mounting passage 33. It should be noted that the mounting passage 33 in the embodiment can be a space with a clear outline formed by the specific structure of the two limiting portions 32, or can be a certain area roughly defined by the two limiting portions 32. In the embodiment, the limiting portion 32 is movably connected to the connecting portion 31. At least part of the structure of the limiting portion 32 can move relative to the connecting portion 31. The mounting passage 33 is formed by at least two limiting portions 32 (for example, the two limiting portions 32 are oppositely spaced apart, and the mounting passage 33 is formed between the two spaced apart limiting portions 32). Therefore, when the limiting portion 32 is subjected to an external force, the limiting portion 32 elastically deforms and moves relative to the connecting portion 31. The relative position between the two limiting portions 32 changes, and the size of the mounting passage 33 can be changed, for example, the maximum size of the mounting passage 33 becomes larger, and the mounting passage 33 can be passed through by an object with a larger size.

[0037] In the embodiment, the installation channel 33 has an axial direction and a radial direction, the axial direction of the installation channel 33 is substantially the same as the axial direction of the light transmission channel 11, and the radial direction of the installation channel 33 is perpendicular to the axial direction of the installation channel 33. In the case that the installation channel 33 is not subjected to external force, the maximum dimension of the projection sheet 20 in the radial direction of the installation channel 33 is greater than the maximum radial dimension of the installation channel 33, so that the projection sheet 20 is limited by the dimension of the installation channel 33 and cannot pass through the installation channel 33.

[0038] In the embodiment, the projection sheet includes the film 22 and two protective sheets 23, the two protective sheets 23 are respectively located at the opposite sides of the film 22 and clamp the film 22 to protect the film 22, the dimension of the protective sheet 23 is greater than the dimension of the film 22 so that the two protective sheets 23 can encapsulate the film 22. Therefore, the dimension of the projection sheet 20 in the embodiment should be understood as the dimension of the protective sheet 23, and the cooperation process between the projection sheet 20 and the limiting part will be introduced below with the projection sheet 20 as the main body. In the embodiment, the protective sheet 23 is a light transmission structure, for example, transparent glass or the like, and the protective sheet 23 can select optical elements with optical effects such as diffraction grating according to the requirement of projection effect.

[0039] Specifically, in the process of installing the projection sheet 20 and moving the projection sheet 20 to the installation support 10 and the limiting cover 30, the projection sheet 20 and the limiting part 32 are extruded to each other to make the limiting part 32 elastically deform and expand the dimension of the installation channel 33, until the projection sheet 20 passes through the installation channel 33 and moves to the installation support 10 and the limiting cover 30, after the projection sheet 20 and the limiting part 32 are separated, the limiting part 32 returns to the original state, the maximum radial dimension of the installation channel 33 returns to be less than the maximum dimension of the projection sheet 20 in the radial direction of the installation channel 33, in this case, at least part of the structure of the limiting part 32 is located at the side of the projection sheet 20 away from the installation support 10, and since one end of the limiting part is connected to the connecting part and the other end elastically abuts against the projection sheet to limit the movement of the projection sheet, the limiting part 32 can abut against the surface of the side of the projection sheet 20 away from the installation support 10 in the process that the projection sheet 20 shakes or fluctuates, and forms a clamping relationship with the installation support 10 to the projection sheet 20, so as to limit the projection sheet 20 to pass through the limiting cover 30 (i.e. limit the projection sheet 20 to pass through the installation channel 33).

[0040] In the embodiment, at least part of the structure of the projection sheet 20 is exposed via the installation channel 33 when the mounting bracket 10, the limiting cover 30 and the projection sheet 20 are in the assembled state, the projection light can pass through the installation channel 33 and conduct to the projection sheet 20, and the projection light beam is formed after being transmitted through the projection sheet 20 and conducted out of the light transmission channel 11, so that the front and back of the projection sheet 20 in the embodiment expose part of the structure via the installation channel 33 and the light transmission channel 11 respectively. In the embodiment, the projection light beam can directly pass through the light transmission channel 11 or indirectly pass through the light transmission channel 11, which will be described in detail later. It can be determined that the projection light can pass through the installation channel 33 and the light transmission channel 11 in turn, and the projection sheet 20 is located on the light path between the installation channel 33 and the light transmission channel 11.

[0041] In the process of dismounting the projection sheet 20 from the mounting bracket 10, the user can apply an external force to the projection sheet 20 via the light transmission channel 11 by fingers or other tools, the projection sheet 20 abuts, extrudes and transmits the external force to the limiting portion 32, so that the limiting portion 32 elastically deforms and moves relative to the connecting portion 31, the maximum radial dimension of the installation channel 33 gradually increases until the projection sheet 20 can pass through the installation channel 33 and move to the side of the limiting cover 30 away from the mounting bracket 10, and after the projection sheet 20 is separated from the limiting portion 32, the limiting portion 32 returns to the original state. Then, a new projection sheet 20 is selected, and the installation steps in the foregoing are repeated. The whole process is completed to replace the projection sheet 20.

[0042] In summary, the projection sheet bracket 100 provided by the embodiment includes the mounting bracket 10, the limiting cover 30 and the projection sheet 20. The projection sheet 20 is located between the mounting bracket 10 and the limiting cover 30. The mounting bracket 10 is connected with the limiting cover 30 and clamps the projection sheet 20 together to stably mount the projection sheet 20 on the mounting bracket 10. The mounting bracket 10 is provided with the light transmission channel 11 for exposing at least part of the structure of the projection sheet 20. The limiting cover 30 includes the connecting portion 31 and at least two limiting portions 32. The connecting portion 31 is connected to the mounting bracket 10 to fix the limiting cover 30 on the mounting bracket 10. The two limiting portions 32 are connected to the connecting portion 31 and are spaced apart to form the installation channel 33. At least part of the structure of the projection sheet 20 is exposed via the installation channel 33, so that the installation channel 33 in the embodiment is used for passing the projection sheet 20 and the projection light. The projection light passes through the installation channel 33 and conducts to the projection sheet 20, forms the projection light beam after being transmitted through the projection sheet 20, and conducts out of the light transmission channel 11. When the projection sheet 20 is mounted between the mounting bracket 10 and the limiting cover 30, at least part of the structure of the limiting portion 32 is located on the side of the projection sheet 20 away from the mounting bracket 10 to prevent the projection sheet 20 from moving out of the space between the mounting bracket 10 and the limiting cover 30.

[0043] In this embodiment, the limiting part 32 is movably connected to the connecting part 31. When subjected to external force, the limiting part 32 can elastically deform and move relative to the connecting part 31, thereby changing (enlarging) the size of the mounting channel 33. This allows the projector 20 to pass through the mounting channel 33 to move between the mounting bracket 10 and the limiting cover 30 for installation, or allows the projector 20 to pass through the mounting channel 33 to move to the side of the limiting cover 30 away from the mounting bracket 10 for removal. With this embodiment, the size of the mounting channel 33 can be changed, and the projector 20 can easily pass through the mounting channel 33 by cooperating with the limiting part 32, making operation easy. It eliminates the need to disassemble the mounting bracket 10 and the limiting cover 30, simplifying the steps of installing, removing, or replacing the projector 20 and improving work efficiency.

[0044] Please see Figure 5 In this embodiment, the limiting part 32 includes a connecting end 3211 and a mating end 3223 connected to each other, with the connecting end 3211 connected to the connecting part 31. When the limiting cover 30 is mounted on the mounting bracket 10, at least two limiting parts 32 are arranged sequentially at intervals around the axis of the light-transmitting channel 11, and the mating ends 3223 of at least two limiting parts 32 are arranged sequentially at intervals around the axis of the light-transmitting channel 11. In other embodiments, at least two limiting parts 32 may be arranged in other ways (e.g., linearly), and the mating ends 3223 of at least two limiting parts 32 may be arranged around each other through the extension of their own structures. In this embodiment, the specific number of limiting parts 32 is not limited. As an example, if there are two limiting parts 32, the two limiting parts 32 are approximately located on both sides of the axis of the light-transmitting channel 11. The mating ends 3223 of the two limiting parts 32 are respectively located on both sides of the axis of the light-transmitting channel 11. The line connecting the center points of the two mating ends 3223 approximately intersects or nearly intersects the axis of the light-transmitting channel 11. In this example, the mounting channel 33 is the space formed between the two mating ends 3223. The mounting channel 33 is similar to the shape of a gate or a turnstile. The projection sheet 20 abuts and presses against the two mating ends 3223, causing the limiting parts 32 to elastically deform, thereby expanding the size of the mounting channel 33 (i.e., expanding the distance between the two mating ends 3223) to allow the projection sheet 20 to pass through.

[0045] In this embodiment, the number of limiting parts 32 is greater than two, for example, three, four, five, six, seven, etc. In this embodiment, multiple limiting parts 32 are arranged sequentially and at intervals around the axis of the light-transmitting channel 11, and the mating ends 3223 of multiple limiting parts 32 are arranged sequentially and at intervals around the axis of the light-transmitting channel 11, and the multiple mating ends 3223 together define the mounting channel 33. In this embodiment, the mounting channel 33 is approximately a circular channel, and the multiple mating ends 3223 are respectively arranged on the same circumference of the mounting channel 33, so that when the projection sheet 20 is engaged with the limiting cover 30, it can simultaneously press and engage with the multiple mating ends 3223, so that the multiple limiting parts 32 undergo elastic deformation, thereby expanding the maximum radial dimension of the mounting channel 33 to allow the projection sheet 20 to pass through. After the mounting channel 33 is formed, the plurality of limiting parts 32 and the mating ends 3223 of the plurality of limiting parts 32 are arranged in a state of surrounding the axis of the mounting channel 33. The axis of the mounting channel 33 is roughly coincident with the axis of the light transmission channel 11, so that the front and back sides of most of the structure of the slide 20 can be exposed by the mounting channel 33 and the light transmission channel 11 respectively, so that most of the content recorded on the slide 20 can be projected onto the projection surface.

[0046] In this embodiment, during the installation of the projector 20, the projector 20 abuts and presses against the side of the mating end 3223 away from the mounting bracket 10 to expand the size of the mounting channel 33, so that the projector 20 can pass through the mounting channel 33 and move between the mounting bracket 10 and the limiting cover 30. Therefore, in this embodiment, the mating end 3223 away from the mounting bracket 10 is provided with a mating chamfer or rounded corner 3224, so that the user can apply external force to the limiting part 32 through the projector 20 to deform the limiting part 32 and expand the size of the mounting channel 33, reducing the difficulty of installing the projector 20 and improving efficiency. During the removal of the projector 20, the projector 20 abuts and presses against the side of the mating end 3223 facing the mounting bracket 10 to expand the size of the mounting channel 33, so that the projector 20 can pass through the mounting channel 33 and move to the side of the limiting cover 30 away from the mounting bracket 10. Therefore, in this embodiment, the mating end 3223 is provided with a mating chamfer or rounded corner 3224 on the side facing the mounting bracket 10, so that the user can apply external force to the limiting part 32 through the projection sheet 20 to deform the limiting part 32 and expand the size of the mounting channel 33, thereby reducing the difficulty of removing the projection sheet 20 and improving efficiency. When the projection sheet 20 is in the installed state, the projection sheet 20 is clamped between the mounting bracket 10 and the limiting cover 30. At least one of the mating chamfers or rounded corners 3224 of the limiting part 32 abuts against the surface of the projection sheet 20, or against the edge of the projection sheet 20, or against the edge structure of the projection sheet 20, so that the projection sheet 20 can cooperate with the mating chamfer or rounded corner 3224, which is beneficial for the projection sheet 20 to pass through the mounting channel 33 to install or remove the projection sheet 20.

[0047] In this embodiment, the connecting part 31 is arranged approximately around the axis of the light-transmitting channel 11, and multiple limiting parts 32 are sequentially and spaced apart from the connecting part 31 along the circumference of the connecting part 31. In this embodiment, the connecting part 31 has a ring structure, which makes the structure of the limiting cover 30 more stable. The connecting part 31 can overcome a certain amount of external force to avoid changing the positional relationship between the multiple limiting parts 32 and thus changing the size of the mounting channel 33. It also avoids the size of the mounting channel 33 from changing due to reasons other than the elastic deformation of the limiting parts 32, so that the mounting channel 33 has stability to limit the movement of the projection sheet 20.

[0048] Please see Figure 5 and Figure 6In this embodiment, the limiting part 32 is a bent elongated structure. The limiting part 32 includes a deformable section 321 and an abutting section 322. The deformable section 321 extends circumferentially along the connecting part 31. One end of the deformable section 321 is connected to the connecting part 31, and the remaining part is spaced apart from the connecting part 31 so that there is a certain space between the deformable section 321 and the connecting part 31 to allow the deformable section 321 to undergo elastic deformation and move relative to the connecting part 31. The other end of the deformable section 321 is connected to the abutting part. As can be seen from the above, the end of the deformable section 321 away from the abutting section 322 is the connecting end 3211 for connecting the connecting part 31. The abutment section 322 extends along the axis of the mounting channel 33 relative to the deformation section 321. The abutment sections 322 of multiple limiting portions 32 collectively form the mounting channel 33. The abutment section 322 abuts against the projection sheet 20 to transmit external force to the deformation section 321. The deformation section 321 undergoes elastic deformation and deflects in a direction away from the axis of the mounting channel 33, thereby changing (enlarging) the size of the mounting channel 33. In this embodiment, the connecting portion 31, the deformation section 321, and the abutment section 322 are integrally formed, exhibiting good integrity and strength. In this embodiment, the material of the limiting cover 30 may include rigid materials such as plastic or metal, which are inherently inelastic or have low elasticity. The limiting portion 32, due to its elongated structure, possesses the ability to elastically deform. In other embodiments, the material of the limiting portion 32 may include materials with a certain elastic deformation capacity, such as rubber. In other embodiments, the connecting part 31 may be a rigid structure, and the limiting part 32 may include a spring and a block structure. The block structure is used to abut and press against the projection sheet 20. The block structure is connected to the connector through a spring, an elastic rubber pad, or other structure, so that the limiting part 32 can undergo elastic deformation and move relative to the connecting part 31.

[0049] In this embodiment, the abutting section 322 includes a first abutting section 3221 and a second abutting section 3222 connected to each other. The first abutting section 3221 is connected to one end of the deformable section 321 and is bent relative to the deformable section 321 toward the axis of the mounting channel 33. The second abutting section 3222 is connected to the end of the first abutting section 3221 away from the deformable section 321 and is bent relative to the first abutting section 3221 in the direction toward the mounting bracket 10. In this embodiment, the second abutting segment 3222 is the mating end 3223 mentioned above. The end of the second abutting segment 3222 away from the first abutting segment 3221 is provided with a mating chamfer or rounded corner 3224 to facilitate the removal of the projection sheet 20. The end of the second abutting segment 3222 connected to the first abutting segment 3221 is provided with a mating chamfer or rounded corner 3224 to facilitate the installation of the projection sheet 20. In this embodiment, the first abutting segment 3221 and the second abutting segment 3222 are smoothly connected to form a rounded corner 3224 at the connection between the first abutting segment 3221 and the second abutting segment 3222.

[0050] Please seeFigure 7 In this embodiment, the projector holder 100 further includes a heat sink 40, which is disposed on the mounting bracket 10 and contacts the surface of the projection surface. In practical applications, the heat generated by the projector 20 under prolonged projection light exposure can be dissipated through the heat sink 40, keeping the temperature of the projector 20 low. This prevents users from being burned by the hot projector 20 during removal, protecting their health and safety and providing a better user experience. In this embodiment, the heat sink 40 is a metal heat sink, meaning it is a metal thermally conductive structure. The heat sink 40 can be made of materials such as copper, copper alloys, aluminum, or aluminum alloys to have good thermal conductivity and effectively dissipate most of the heat from the projector 20.

[0051] In this embodiment, the heat sink 40 is provided with a light-transmitting hole 41, and the projection sheet 20 is embedded in the light-transmitting hole 41. At least a portion of the structure of the projection sheet 20 is exposed through the light-transmitting hole 41. In this embodiment, the heat sink 40 is installed in the light-transmitting channel 11, and at least a portion of the light-transmitting hole 41 coincides with the light-transmitting channel 11 to make full use of space and avoid the projection sheet holder 100 being too large in the axial direction of the light-transmitting channel 11. The axial direction of the light-transmitting hole 41 is approximately consistent with the axial direction of the light-transmitting channel 11 so that the projection light can pass through the projection sheet holder 100. In this embodiment, the axis of the light-transmitting hole 41 is approximately coincident with the axis of the light-transmitting channel 11. In other embodiments, the axis of the light-transmitting hole 41 and the axis of the light-transmitting channel 11 can be arranged parallel. In this embodiment, the projection sheet is located within the range of the light-transmitting channel 11, and the projection light passes through the projection sheet 20 while passing through the light-transmitting channel 11.

[0052] In this embodiment, the light-transmitting hole 41 and the light-transmitting channel 11 have multiple relationships. As an example, if one port of the light-transmitting hole 41 away from the limiting cover 30 is located in the light-transmitting channel 11, then in this example, the projected light passes through the mounting channel 33 and is conducted into the light-transmitting hole 41. The projected light is transmitted through the projection sheet 20 to form a projection beam. The projection beam is conducted out of the light-transmitting hole 41 and into the light-transmitting channel 11, and then conducted out of the light-transmitting channel 11 to conduct out the projection sheet support 100.

[0053] Please see Figure 7 and Figure 8In this embodiment, the end of the heat sink 40 away from the limiting cover 30 passes through the light-transmitting channel 11 and extends out of the light-transmitting channel 11. The edge structure of the port of the light-transmitting channel 11 is arranged around the outer periphery of the end of the heat sink 40. The port of the light-transmitting hole 41 away from the limiting cover 30 is located outside the light-transmitting channel 11. In this embodiment, the projection light passes through the mounting channel 33 and is conducted into the light-transmitting hole 41. The projection light is transmitted through the projection sheet 20 to form a projection beam. The projection beam is conducted out of the light-transmitting hole 41 to be directly conducted out of the projection sheet support 100. In this embodiment, the projection beam should be understood as passing through both the light-transmitting hole 41 and the light-transmitting channel 11 at the same time. The difference is that the projection beam directly passes through the light-transmitting hole 41 and indirectly passes through the light-transmitting channel 11.

[0054] Please see Figure 9 In this embodiment, the inner wall of the light-transmitting hole 41 is a non-rotating surface. When the projection sheet 20 is embedded in the light-transmitting hole 41, it cannot rotate relative to the heat sink 40. The light-transmitting hole 41 in this embodiment is a stepped hole, meaning it includes at least two segments with the same axis. The inner diameters of the two segments are different to form a step, resulting in a stepped surface 43 inside the light-transmitting hole 41. The projection sheet 20 is stacked on the stepped surface 43, with its edge structure fitting or contacting the stepped surface 43. The central portion of the projection sheet 20 is exposed through the light-transmitting hole 41, increasing the contact area between the projection sheet 20 and the heat sink 40 and improving heat dissipation. In this embodiment, the inner diameter of the segment of the light-transmitting hole 41 near the limiting cover 30 is larger than the maximum radial dimension of the projection sheet 20 in the mounting channel 33, allowing the projection sheet 20 to be embedded into the light-transmitting hole 41 after passing through the mounting channel 33. In this embodiment, when the projection sheet 20 is mounted on the heat sink 40, the heat sink 40 and the limiting cover 30 together clamp the projection sheet 20. That is, the mounting bracket 10 in this embodiment does not directly abut against the projection sheet 20. The mounting bracket 10 indirectly abuts against the projection sheet 20 through the heat sink 40 and together with the limiting cover 30 clamps the projection sheet 20.

[0055] Please see Figure 7 and Figure 8In this embodiment, the heat sink 40 is a structure independent of the mounting bracket 10 and the limiting cover 30. The heat sink 40 has a light-transmitting hole 41 for accommodating the projection sheet 20. Therefore, in the radial direction of the mounting channel 33, the size of the heat sink 40 is larger than the size of the projection sheet 20. In this embodiment, the heat sink 40 is mounted on the mounting bracket 10, and the limiting cover 30 is detachably connected to the mounting bracket and together with the mounting bracket 10 clamps the heat sink 40. Specifically, the connecting part 31 in this embodiment includes a connecting body 311 and a first mating part 312 connected to each other. The connecting body 311 is generally annular and arranged around the axis of the mounting channel 33. A plurality of limiting parts 32 are sequentially and spaced apart on the connecting body 311 along the circumference of the connecting body 311. The mounting bracket 10 is provided with a second mating part 13, which is detachably connected to the first mating part 312. In this embodiment, multiple first mating parts 312 can be provided. These multiple first mating parts 312 are sequentially and spaced apart on the connecting body 311 along its circumference. The number of second mating parts 13 is the same as the number of first mating parts 312. Each of the multiple second mating parts 13 corresponds one-to-one with each of the multiple first mating parts 312 and is detachably connected. This improves the stability of the connection between the mounting bracket 10 and the limiting cover 30, ensuring that the heat sink 40 remains positioned between the mounting bracket 10 and the limiting cover 30. In this embodiment, the maximum radial dimension of the heat sink 40 in the mounting channel 33 is greater than the maximum size that the mounting channel 33 can expand to, thus preventing the heat sink 40 from detaching from the mounting bracket 10 via the mounting channel 33.

[0056] In this embodiment, one of the first mating part 312 and the second mating part 13 includes a snap fastener, and the other of the first mating part 312 and the second mating part 13 includes a slot. The snap fastener and the slot engage in a snap-fit ​​relationship. That is, in this embodiment, if the first mating part 312 is a snap fastener, then the second mating part 13 is a slot; if the first mating part 312 is a slot, then the second mating part 13 is a snap fastener. In other embodiments, the limiting cover 30 and the mounting bracket 10 can be detachably connected by a threaded structure, or they can be connected and detachably connected using fasteners (screws, pins, etc.).

[0057] Please see Figure 9In this embodiment, the heat sink 40 is a gear structure, rotatably mounted in the light-transmitting channel 11. One end of the heat sink 40, away from the limiting cover 30, passes through one port of the light-transmitting channel 11 away from the limiting cover 30 and extends out of the light-transmitting channel 11. The edge structure of this port of the light-transmitting channel 11 fits against the outer periphery of this end of the heat sink 40, so that the gear-type heat sink 40 is stably and rotatably mounted within the light-transmitting channel 11. In this embodiment, a plurality of teeth 42 are sequentially arranged on the outer periphery of the heat sink 40. The teeth 42 protrude relative to the outer periphery of the heat sink 40 in a direction away from the mounting channel 33, so that the heat sink 40 presents a gear shape. The light-transmitting channel 11 includes at least two hole segments, which are coaxial and have different inner diameters, forming a limiting step surface within the light-transmitting channel 11. The teeth 42 of the heat sink 40 abut against the limiting step surface to limit the heat sink 40 within the light-transmitting channel 11.

[0058] Please see Figure 10 The projection device 1000 in this embodiment also includes a drive mechanism (not shown in the figure), which may include a motor and a transmission gear. In this embodiment, the mounting bracket 10 has a notch 12, which communicates with the light-transmitting channel 11 via the inner wall of the light-transmitting channel 11. A portion of the continuous teeth 42 on the heat sink 40 extends out of the light-transmitting channel 11 through the notch 12 and is connected to the drive mechanism for transmission. That is, the extended portion of the continuous teeth 42 meshes with the transmission gear, and the motor drives the transmission gear to rotate, thereby causing the heat sink 40 to rotate. In actual application scenarios, the projection sheet 20 is mounted on the heat sink 40 and rotates with the heat sink 40. The pattern formed by the projection beam on the projection surface is in a rotating state. When the content of the projection pattern is a small light spot, a dynamic starry sky effect can be formed on the projection surface, increasing the atmosphere of the application environment.

[0059] This embodiment provides a slide holder 100, which includes a mounting bracket 10, a limiting cover 30, and a slide 20. The slide 20 is generally located between the mounting bracket 10 and the limiting cover 30. The mounting bracket 10 and the limiting cover 30 are connected and together clamp the slide 20, so that the slide 20 is stably mounted on the mounting bracket 10. The mounting bracket 10 is provided with a light-transmitting channel 11 to expose at least a portion of the structure of the slide 20. The limiting cover 30 includes a connecting portion 31 and at least two limiting portions 32. The connecting portion 31 is connected to the mounting bracket 10 to fix the limiting cover 30 to the mounting bracket 10. The two limiting portions 32 are connected to the connecting portion 31 and are spaced apart to form an installation channel 33. At least a portion of the structure of the slide 20 is exposed through the installation channel 33. Therefore, in this embodiment, the installation channel 33 is used for both the slide 20 and the projection light to pass through. The projected light passes through the mounting channel 33 and is transmitted to the projection sheet 20. The projection beam is formed by transmitting light through the projection sheet 20 and can be transmitted out through the light transmission channel 11. When the projection sheet 20 is mounted between the mounting bracket 10 and the limiting cover 30, at least a portion of the structure of the limiting part 32 is located on the side of the projection sheet 20 away from the mounting bracket 10, so as to prevent the projection sheet 20 from moving out of the space between the mounting bracket 10 and the limiting cover 30.

[0060] In this embodiment, the limiting part 32 is movably connected to the connecting part 31. When subjected to external force, the limiting part 32 can elastically deform and move relative to the connecting part 31, thereby changing (enlarging) the size of the mounting channel 33. This allows the projector 20 to pass through the mounting channel 33 to move between the mounting bracket 10 and the limiting cover 30 for installation, or allows the projector 20 to pass through the mounting channel 33 to move to the side of the limiting cover 30 away from the mounting bracket 10 for removal. With this embodiment, the size of the mounting channel 33 can be changed, and the projector 20 can easily pass through the mounting channel 33 by cooperating with the limiting part 32, making operation easy. It eliminates the need to disassemble the mounting bracket 10 and the limiting cover 30, simplifying the steps of installing, removing, or replacing the projector 20 and improving work efficiency.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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, include: Mounting bracket, wherein the mounting bracket is provided with a light-transmitting channel; A projection sheet, detachably mounted on the mounting bracket, wherein at least a portion of the structure of the projection sheet is exposed via the light-transmitting channel; as well as A limiting cover, which is connected to the mounting bracket and together with the mounting bracket clamps the projection sheet; The limiting cover includes a connecting part and at least two limiting parts. The connecting part is connected to the mounting bracket. One end of the limiting part is connected to the connecting part, and the other end elastically abuts against the projection sheet to limit the movement of the projection sheet. The two limiting parts spaced apart form an installation channel. The limiting part undergoes elastic deformation under external force to change the size of the installation channel. The projection light passes through the installation channel and the projection sheet and is transmitted out through the light-transmitting channel.

2. The slide holder as described in claim 1, characterized in that, The limiting part includes a connecting end and a mating end that are connected to each other, and the connecting end is connected to the connecting part; The number of limiting parts is greater than two, and the mating ends of the multiple limiting parts are arranged around the axis of the light-transmitting channel to jointly define the installation channel; With the limiting cover installed on the mounting bracket, when the size of the mounting channel expands, the mounting channel allows the projector to pass through so that the projector can move between the limiting cover and the mounting bracket.

3. The slide holder as described in claim 2, characterized in that, The mating end has a chamfer or rounded corner on the side facing away from the mounting bracket; and / or The mating end has a chamfer or rounded corner on the side facing the mounting bracket.

4. The slide holder as described in claim 1, characterized in that, The connecting portion is arranged around the axis of the light-transmitting channel. The limiting portion includes a deformable section and an abutting section. The deformable section extends circumferentially along the connecting portion and is spaced apart from the connecting portion. One end of the deformable section is connected to the connecting portion, and the other end is connected to the abutting section. The abutting section is used to elastically abut against the projection sheet to change the size of the mounting channel by utilizing the thrust applied by the projection sheet.

5. The slide holder as described in claim 1, characterized in that, The connecting part includes a connecting body and a first mating part that are connected to each other, and the limiting part is connected to the connecting body; The mounting bracket is provided with a second mating part, and the first mating part and the second mating part are detachably connected.

6. The slide holder as described in claim 5, characterized in that, One of the first mating part and the second mating part includes a snap fastener, and the other of the first mating part and the second mating part includes a slot, wherein the snap fastener and the slot engage in a snap-fit ​​relationship.

7. The slide holder as described in claim 1, characterized in that, The projection sheet holder also includes a heat sink, which is disposed on the mounting bracket and contacts the surface of the projection sheet. The heat sink is a metal heat sink.

8. The slide holder as described in claim 7, characterized in that, The heat sink is provided with a light-transmitting hole, the axis of which is the same as the axis of the light-transmitting channel, and the projection sheet is embedded in the light-transmitting hole.

9. The slide holder as described in claim 8, characterized in that, The projection plate holder is used in a projection device including a drive mechanism; multiple teeth are arranged sequentially on the outer periphery of the heat sink, the heat sink is rotatably mounted on the light-transmitting channel, and the multiple teeth are connected to the drive mechanism for transmission.

10. A projection device, characterized in that, include: The housing is provided with a light-emitting window; A light source module, located inside the housing and used to emit projected light; as well as The slide holder as described in any one of claims 1 to 9, wherein the slide holder is detachably connected to the housing, and when the slide holder is installed in the housing, the slide holder is located between the light-emitting window and the light source module.

Images