Projection device

Abstract

An embodiment of the present application discloses a projection device, belonging to the field of projection technology. The projection device includes: a storage part having a first accommodating part, the first accommodating part having a light-transmitting opening, an optical engine, and the light beam emitted by the optical engine can pass through the light-transmitting opening; a projection screen for receiving the light beam to display an image; a driving mechanism located in the inner cavity of the first accommodating part; a sliding plate, and the driving mechanism can drive the sliding plate to switch between being accommodated in the inner cavity of the first accommodating part and blocking the area where the light-transmitting opening is located. In the embodiment of the present application, by providing a sliding plate on the first accommodating part, when the projection device is in use, the driving mechanism drives the sliding plate to be accommodated in the inner cavity of the first accommodating part to avoid the light-transmitting opening, thereby ensuring the normal use of the projection device; when the projection device is not in use, the driving mechanism drives the sliding plate to block the area where the light-transmitting opening is located, thereby avoiding the exposure of the optical engine and effectively protecting the optical engine.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of projection technology, and particularly to a projection device. Background Art

[0002] With the continuous development of technology, projection devices are increasingly applied to people's work and life. Currently, projection devices mainly include an optical engine and a projection screen. Among them, the optical engine is used to emit light beams, and the projection screen is located on the light-emitting side of the optical engine and is used to receive the light beams to achieve the display of images. Summary of the Invention

[0003] Embodiments of the present application provide a projection device, which can avoid the technical problem of ineffective protection of the optical engine. The technical solution is as follows:

[0004] A projection device, the projection device includes:

[0005] A storage part, the storage part has a first accommodation part and a second accommodation part;

[0006] An optical engine, the optical engine is located in the inner cavity of the first accommodation part, the light-emitting side of the first accommodation part has a light-transmitting opening, and the light beam emitted by the optical engine can pass through the light-transmitting opening;

[0007] A projection screen, the projection screen is fixed in the second accommodation part, the second accommodation part has a first opening, the projection screen can pass through the first opening and be accommodated in the inner cavity of the second accommodation part, or pass through the first opening and unfold, and when the projection screen unfolds, the light beam is used to display an image;

[0008] A driving mechanism, the driving mechanism is located in the inner cavity of the first accommodation part;

[0009] A sliding plate, the sliding plate is connected to the driving mechanism, the driving mechanism can drive the sliding plate to switch between being accommodated in the inner cavity of the first accommodation part and blocking the area where the light-transmitting opening is located, and the sliding plate avoids the light-transmitting opening when being accommodated in the inner cavity of the first accommodation part.

[0010] Optionally, the driving mechanism includes a translation mechanism, the translation mechanism is connected to the sliding plate, and the translation mechanism can drive the sliding plate to move.

[0011] Optionally, the translation mechanism is an electric telescopic rod, the electric telescopic rod is fixed in the first accommodation part, and the extending end of the electric telescopic rod is connected to the sliding plate.

[0012] Optionally, the translation mechanism includes a driving motor and a conveyor belt;

[0013] The driving motor is fixed within the first accommodating portion. The conveyor belt is rotatably limited within the first accommodating portion. The driving motor is in transmission connection with the conveyor belt, and the conveyor belt is connected to the sliding plate.

[0014] Optionally, the translation mechanism includes a toggle button. The side wall of the first accommodating portion has a chute. The first end of the toggle button is connected to the sliding plate. The second end of the toggle button passes through the chute and extends out of the first accommodating portion. The toggle button can slide within the chute.

[0015] Optionally, the chute is located on the side of the first accommodating portion facing the projection screen.

[0016] Optionally, the driving mechanism further includes a moving component. The moving component is respectively connected to the translation mechanism and the sliding plate. The translation mechanism drives the sliding plate to move through the moving component.

[0017] Optionally, the moving component is a push plate. The first side edge of the push plate is fixedly connected to the translation mechanism. The second side edge of the push plate is connected to the sliding plate.

[0018] Optionally, the side wall of the first accommodating portion has a slide rail. The push plate is slidably limited on the slide rail.

[0019] Optionally, the cross-section of the push plate is L-shaped.

[0020] Optionally, the driving mechanism further includes a lifting mechanism. The projection device further includes a support plate;

[0021] The support plate is fixed within the inner cavity of the first accommodating portion and is located below the sliding plate. The support plate has a second opening, and the projection area of the second opening on the plane where the light-emitting side is located covers the area where the light-transmitting opening is located, or coincides with the area where the light-transmitting opening is located;

[0022] The lifting mechanism is supported on the support plate. The lifting mechanism is connected to the sliding plate and can control the sliding plate to rise or fall.

[0023] Optionally, the lifting mechanism includes a sliding rod and a rotating frame;

[0024] On one side of the support plate close to the light-emitting side, there is a slideway. The sliding rod is slidably limited within the slideway. The sliding rod is fixedly connected to the moving component;

[0025] The first end of the rotating frame is connected to the sliding rod. The second end of the rotating frame is connected to the sliding plate, and the plane where the rotating frame is located is not parallel to the light-emitting side;

[0026] The support plate further has a baffle. When the sliding plate is received in the inner cavity of the first accommodating portion, the distance between the first end of the rotating frame and the baffle is greater than the distance between the second end of the rotating frame and the baffle. When the sliding plate blocks the area where the light-transmitting opening is located, the distance between the first end of the rotating frame and the baffle is greater than or equal to the distance between the second end of the rotating frame and the baffle.

[0027] Optionally, the rotating frame has a Z-shaped structure. The first end of the rotating frame is rotatably connected to the sliding rod, and the second end of the rotating frame is fixedly connected to the sliding plate, or the first end of the rotating frame is fixedly connected to the sliding rod, and the second end of the rotating frame is rotatably connected to the sliding plate.

[0028] Optionally, the length direction of the slideway is parallel to the length direction of the first accommodating portion.

[0029] Optionally, the sliding plate includes a first sub-sliding plate and a second sub-sliding plate;

[0030] Both the first sub-sliding plate and the second sub-sliding plate are connected to the driving mechanism. The driving mechanism can drive the first sub-sliding plate and the second sub-sliding plate to be received in the inner cavity of the first accommodating portion, or drive the first sub-sliding plate and the second sub-sliding plate to block the area where the light-transmitting opening is located.

[0031] The beneficial effects of the technical solution provided by the embodiment of the present application may at least include:

[0032] In the embodiment of the present application, by providing a sliding plate on the first accommodating portion, when using the projection device, the driving mechanism drives the sliding plate to be received in the inner cavity of the first accommodating portion to avoid the light-transmitting opening, so that the light beam emitted by the optical engine passes through the light-transmitting opening and is emitted to the projection screen, ensuring the normal use of the projection device; when the projection device is not in use, the driving mechanism drives the sliding plate to block the area where the light-transmitting opening is located, thereby avoiding the exposure of the optical engine and effectively protecting the optical engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a schematic structural diagram of a projection device provided by an embodiment of the present application;

[0035] Figure 2It is a schematic structural diagram of a projection device in which a skateboard avoids a light-transmitting opening provided by an embodiment of the present application;

[0036] Figure 3 It is a schematic structural diagram of a projection device in which a skateboard blocks a light-transmitting opening provided by an embodiment of the present application;

[0037] Figure 4 It is a schematic structural diagram of a first accommodation part in which a skateboard avoids a light-transmitting opening provided by an embodiment of the present application;

[0038] Figure 5 It is a schematic structural diagram of a first accommodation part in which a skateboard blocks a light-transmitting opening provided by an embodiment of the present application;

[0039] Figure 6 It is a schematic cross-sectional structure diagram of a first accommodation part provided by an embodiment of the present application;

[0040] Figure 7 It is a schematic front view structure diagram of a driving mechanism and a skateboard provided by an embodiment of the present application;

[0041] Figure 8 It is a schematic structural diagram of a skateboard avoiding a light-transmitting opening provided by an embodiment of the present application;

[0042] Figure 9 It is a schematic structural diagram of a skateboard blocking a light-transmitting opening provided by an embodiment of the present application;

[0043] Figure 10 It is a schematic structural diagram of a lifting mechanism provided by an embodiment of the present application;

[0044] Figure 11 It is a schematic side view cross-sectional structure diagram of a projection device provided by an embodiment of the present application;

[0045] Figure 12 It is a schematic side view cross-sectional structure diagram of another projection device provided by an embodiment of the present application.

[0046] Reference numerals:

[0047] 1: Storage part; 2: Optical engine; 3: Projection screen; 4: Skateboard; 5: Driving mechanism; 6: Support plate;

[0048] 11: First accommodation part; 111: Light-transmitting opening; 12: Second accommodation part;

[0049] 41: First sub-skateboard; 42: Second sub-skateboard;

[0050] 51: Translation mechanism; 52: Lifting mechanism;

[0051] 511: Driving motor; 512: Conveyor belt; 513: Moving component;

[0052] 521: Sliding rod; 522: Rotary frame. Detailed implementation manner

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

[0054] Combined with Figure 1 , Figure 2 and Figure 3 As shown, the projection device includes: a storage part 1, the storage part 1 has a first accommodation part 11 and a second accommodation part 12; an optical engine 2, the optical engine 2 is located in the inner cavity of the first accommodation part 11, the light-emitting side of the first accommodation part 11 has a light-transmitting opening 111, and the light beam emitted by the optical engine 2 can pass through the light-transmitting opening 111; a projection screen 3, the projection screen 3 is fixed in the second accommodation part 12, the second accommodation part 12 has a first opening, the projection screen 3 can pass through the first opening and be received in the inner cavity of the second accommodation part 12, or pass through the first opening and unfold, and when the projection screen 3 unfolds, the light beam is used to display an image; a driving mechanism 5, the driving mechanism 5 is located in the inner cavity of the first accommodation part 11; a sliding plate 4, the sliding plate 4 is connected to the driving mechanism 5, and the driving mechanism 5 can drive the sliding plate 4 to switch between being received in the inner cavity of the first accommodation part 11 and blocking the area where the light-transmitting opening 111 is located, and when the sliding plate 4 is received in the inner cavity of the first accommodation part 11, it avoids the light-transmitting opening 111.

[0055] In the embodiments of the present application, by providing the sliding plate 4 on the first accommodation part 11, when using the projection device, combined with Figure 2 and Figure 4 As shown, the driving mechanism 5 drives the sliding plate 4 to be received in the inner cavity of the first accommodation part 11 to avoid the light-transmitting opening 111, so that the light beam emitted by the optical engine 2 passes through the light-transmitting opening 111 and is emitted to the projection screen 3, ensuring the normal use of the projection device; when the projection device is not in use, combined with Figure 3 and Figure 5 As shown, the driving mechanism 5 drives the sliding plate 4 to block the area where the light-transmitting opening 111 is located, thereby avoiding the exposure of the optical engine 2 and effectively protecting the optical engine 2.

[0056] In addition, when the projection device is not in use, the projection screen 3 can pass through the first opening and be received in the inner cavity of the second accommodation part 12, thereby reducing the overall appearance size of the projection device. By limiting the optical engine 2 and the projection screen 3 by the first accommodation part 11 and the second accommodation part 12, the integration of the optical engine 2 and the projection screen 3 is achieved, avoiding the phenomenon of relative displacement between the optical engine 2 and the projection screen 3, and ensuring the display effect of the image on the projection screen 3.

[0057] Among them, for the convenience of arranging the optical engine 2 in the first accommodating portion 11 and for the convenience of dissipating heat from the optical engine 2 in the first accommodating portion, the first accommodating portion 11 has a certain length, that is, the first accommodating portion 11 is a rectangular frame in a long strip shape.

[0058] In the embodiment of the present application, the projection device is an ultra-short-throw laser projection device. Correspondingly, the optical engine 2 is an ultra-short-throw optical engine. In this way, a shorter distance can be set between the optical engine 2 and the projection screen 3, so as to realize the miniaturized design of the projection device. Exemplarily, the ultra-short-throw optical engine is a DLP (Digital Light Procession) optical engine.

[0059] Among them, the specific structures of the light source system, the illumination system, and the lens system included in the optical engine 2 can refer to the related art, and the embodiment of the present application does not limit this.

[0060] Exemplarily, red, green, and blue primary color solid-state lasers are used as the light source system, or a solid-state laser is used to excite a fluorescent substance as the light source system, or a solid-state laser is combined with an LED (Light-Emitting Diode) light source as the light source system. After the three primary color light beams emitted by the light source system are integrally processed by the lenses in the illumination system, they are irradiated onto the surface of the DMD (Digital Micromirror Device) in the illumination system, and then the integrally processed light beams are rotationally reflected to the lens system by the DMD, and then diffused by the lens system and emitted to the projection screen 3 to form a colorful picture on the projection screen 3.

[0061] Among them, the DMD is a display chip containing many small mirrors that can be quickly flipped.

[0062] Optionally, the projection screen 3 includes a screen sheet, a curling assembly, and a lifting assembly. The curling assembly is rotatably limited in the inner cavity of the second accommodating portion 12. The first end of the lifting assembly is fixed in the second accommodating portion 12. The first side edge of the screen sheet is fixedly connected to the curling assembly, and the curling assembly can rotate along its circumferential direction to control the retraction of the screen sheet; the second side edge of the screen sheet is fixedly connected to the lifting assembly, and the lifting assembly can drive the second side edge of the screen sheet to rise to control the unfolding of the screen sheet.

[0063] Among them, the structures of the curling assembly and the lifting assembly can refer to the related art, and the embodiment of the present application does not limit this.

[0064] In the embodiment of the present application, when the driving mechanism 5 drives the sliding plate 4 to be received in the inner cavity of the first accommodating portion 11 or to block the area where the light-transmitting opening 111 is located, in some embodiments, such as Figure 6As shown, the driving mechanism 5 only includes a translation mechanism 51. Of course, in some other embodiments, such as Figure 7 As shown, the driving mechanism 5 includes a translation mechanism 51 and a lifting mechanism 52.

[0065] When the driving mechanism 5 only includes the translation mechanism 51, in the case where the sliding plate 4 blocks the area where the light-transmitting opening 111 is located, the projection of the sliding plate 4 on the plane where the light-emitting side of the first accommodating portion 11 is located can cover the area where the light-transmitting opening 111 is located. That is, the projection of the area where the light-transmitting opening 111 is located in the plane where the sliding plate 4 is located is located on the sliding plate 4, and the distance between the edge of the sliding plate 4 and the edge of the light-transmitting opening 111 is greater than or equal to the first distance threshold to ensure the blocking effect of the sliding plate 4 on the light-transmitting opening 111. Optionally, the first distance threshold is 1 cm, 2 cm, 5 cm, etc. The embodiments of the present application do not limit this. In addition, the distance between the upper surface of the sliding plate 4 and the lower surface of the light-emitting side of the first accommodating portion 11 is less than or equal to the second distance threshold to reduce the gap between the sliding plate 4 and the light-emitting side of the first accommodating portion 11, thereby ensuring the blocking effect of the sliding plate 4 on the light-transmitting opening 111. Optionally, the second distance threshold is 1 mm, 1.5 mm, 2 mm, etc., as long as it does not affect the relative sliding between the sliding plate 4 and the light-emitting side of the first accommodating portion 11. The embodiments of the present application do not limit this.

[0066] Optionally, the translation mechanism 51 is connected to the sliding plate 4, and the translation mechanism 51 can drive the sliding plate 4 to move. In this way, the translation mechanism 51 can provide a power source for the sliding plate 4, and then when the sliding plate 4 needs to move, the translation mechanism 51 drives the sliding plate 4 to move to realize the sliding plate 4 being received in the inner cavity of the first accommodating portion 11 or blocking the area where the light-transmitting opening 111 is located.

[0067] Among them, the direction in which the translation mechanism 51 drives the sliding plate 4 to move is parallel to the plane where the light-emitting side of the first accommodating portion 11 is located. Exemplarily, the direction in which the translation mechanism 51 drives the sliding plate 4 to move is parallel to the length direction of the light-transmitting opening 111, or perpendicular to the length direction of the light-transmitting opening 111. Of course, the direction in which the translation mechanism 51 drives the sliding plate 4 to move is other directions, as long as it can realize the switching of the sliding plate 4 between being received in the inner cavity of the first accommodating portion 11 and blocking the area where the light-transmitting opening 111 is located. The embodiments of the present application do not limit this.

[0068] In the embodiments of the present application, the translation mechanism 51 is electric or manual.

[0069] When the translation mechanism 51 is electric, in some embodiments, it is an electric telescopic rod. The electric telescopic rod is fixed in the first accommodating portion 11, and the extending end of the electric telescopic rod is connected to the sliding plate 4.

[0070] Among them, the telescopic direction of the electric telescopic rod is parallel to the plane where the light-emitting side of the first accommodating part 11 is located. By way of example, the telescopic direction of the electric telescopic rod is parallel to the length direction of the light-transmitting opening 111, or perpendicular to the length direction of the light-transmitting opening 111.

[0071] Optionally, the distance from the fixed end of the electric telescopic rod to the first side wall of the first accommodating part 11 is less than the distance from the light-transmitting opening 111 to the first side wall of the first accommodating part 11. The first side wall of the first accommodating part 11 refers to a side wall that is on the same side of the light-transmitting opening 111 as the fixed end of the electric telescopic rod in the length direction or the width direction.

[0072] During actual use, the translation mechanism 51 further includes a controller, and the controller is electrically connected to the electric telescopic rod. When the controller receives a signal to use the projection device, it sends a first control signal to the electric telescopic rod to control the electric telescopic rod to shorten. Then, during the shortening process of the electric telescopic rod, the slide plate 4 is driven to move in the direction close to the fixed end of the electric telescopic rod, so as to realize the accommodation of the slide plate 4 in the inner cavity of the first accommodating part 11. When the controller receives a signal to pause using the projection device, it sends a second control signal to the electric telescopic rod to control the electric telescopic rod to extend. Then, during the extension process of the electric telescopic rod, the slide plate 4 is driven to move in the direction away from the fixed end of the electric telescopic rod, so as to realize the shielding of the area where the light-transmitting opening 111 is located by the slide plate 4.

[0073] In some other embodiments, such as Figure 6 , Figure 7 or Figure 8 As shown, the translation mechanism 51 includes a driving motor 511 and a conveyor belt 512; the driving motor 511 is fixed in the first accommodating part 11, the conveyor belt 512 is rotatably limited in the first accommodating part 11, the driving motor 511 is drivingly connected to the conveyor belt 512, and the conveyor belt 512 is connected to the slide plate 4.

[0074] Among them, the side wall of the first accommodating part 11 has a rotating shaft, and the conveyor belt 512 is rotatably limited through the output shaft of the driving motor 511 and this rotating shaft. The conveying direction of the conveyor belt 512 is parallel to the plane where the light-emitting side of the first accommodating part 11 is located. By way of example, the conveying direction of the conveyor belt 512 is parallel to the length direction of the light-transmitting opening 111, and at this time the slide plate 4 slides along the length direction of the light-transmitting opening 111; or perpendicular to the length direction of the light-transmitting opening 111, and at this time the slide plate 4 slides along the width direction of the light-transmitting opening 111.

[0075] Optionally, the distance from the driving motor 511 to the first side wall of the first accommodating part 11 is less than the distance from the light-transmitting opening 111 to the first side wall of the first accommodating part 11. The first side wall of the first accommodating part 11 refers to a side wall that is on the same side of the light-transmitting opening 111 as the driving motor 511 in the length direction or the width direction.

[0076] During actual use, the translation mechanism 51 further includes a controller, which is electrically connected to the driving motor 511. When the controller receives a signal for using the projection device, it sends a third control signal to the driving motor 511 to control the driving motor 511 to rotate forward. Then, during the forward rotation of the driving motor 511, the conveyor belt 512 drives the sliding plate 4 to move in the direction close to the driving motor 511, so as to realize that the sliding plate 4 is received in the inner cavity of the first accommodating portion 11. When the controller receives a signal for suspending the use of the projection device, it sends a fourth control signal to the driving motor 511 to control the driving motor 511 to rotate reversely. Then, during the reverse rotation of the driving motor 511, the conveyor belt 512 drives the sliding plate 4 to move in the direction away from the driving motor 511, so as to realize that the sliding plate 4 blocks the area where the light transmission opening 111 is located.

[0077] When the translation mechanism 51 is manual, in some embodiments, it includes a toggle button. The side wall of the first accommodating portion 11 has a chute. The first end of the toggle button is connected to the sliding plate 4, and the second end of the toggle button passes through the chute and extends out of the first accommodating portion 11. The toggle button can slide in the chute.

[0078] Among them, the chute is located on one side of the first accommodating portion 11 in the length direction, or on one side of the first accommodating portion 11 in the width direction away from the projection screen 3. Exemplarily, the chute is located on the side of the first accommodating portion 11 facing the projection screen 3. The length direction of the chute is parallel to the plane where the light-emitting side of the first accommodating portion 11 is located.

[0079] During actual use, when using the projection device, the toggle button is toggled in the direction away from the light transmission opening 111 to drive the sliding plate 4 to move synchronously, so as to realize that the sliding plate 4 is received in the inner cavity of the first accommodating portion 11. When suspending the use of the projection device, the toggle button is toggled in the direction close to the light transmission opening 111 to drive the sliding plate 4 to move synchronously, so as to realize that the sliding plate 4 blocks the area where the light transmission opening 111 is located.

[0080] It should be noted that when the translation mechanism 51 only includes the translation mechanism 51, the translation mechanism 51 and the sliding plate 4 are located in the same plane, so that the translation mechanism 51 can drive the sliding plate 4 to move in a plane parallel to the light-emitting side of the first accommodating portion 11.

[0081] When the translation mechanism 51 is located below the sliding plate 4, for the convenience of connecting the translation mechanism 51 and the sliding plate 4, optionally, as Figure 8 or Figure 9As shown in the figure, the driving mechanism 5 further includes a moving component 53. The moving component 53 is respectively connected to the translation mechanism 51 and the slide plate 4. The translation mechanism 51 drives the slide plate 4 to move through the moving component 53. In this way, through the connection of the moving component 53 to the translation mechanism 51 and the slide plate 4, under the driving action of the translation mechanism 51, the slide plate 4 can be driven to move synchronously by the moving component 53.

[0082] Exemplarily, the moving component 53 is a push plate. The first side of the push plate is fixedly connected to the translation mechanism 51, and the second side of the push plate is connected to the slide plate 4. Of course, the moving component 53 can be other structures besides the push plate, as long as it can realize the connection between the translation mechanism 51 and the slide plate 4, and when the translation mechanism 51 drives the moving component 53 to move, the moving component 53 can drive the slide plate 4 to move synchronously. The embodiments of the present application do not make any limitations in this regard.

[0083] Optionally, the inner wall of the first accommodating portion 11 has a slide rail, and the moving component 53 is slidably limited on the slide rail. Exemplarily, when the moving component 53 is a push plate, the push plate is slidably limited on the slide rail. In this way, through the limitation of the moving component 53 by the slide rail, the sliding direction of the moving component 53 is ensured, and the possibility of the moving component 53 driving the slide plate 4 to shake synchronously is avoided.

[0084] Among them, the length direction of the slide rail is parallel to the plane where the light-emitting side of the first accommodating portion 11 is located. Exemplarily, the slide rail is located on the inner wall of the first accommodating portion 11 on the side facing the projection screen 3, and the length direction of the slide rail is parallel to the length direction of the first accommodating portion 11.

[0085] Optionally, the cross-section of the push plate is L-shaped. At this time, there is a certain interval between the edge of the slide plate 4 and the side wall of the first accommodating portion 11. Of course, when the push plate has a rectangular structure, the distance between the edge of the slide plate 4 and the side wall of the first accommodating portion 11 is smaller.

[0086] In the embodiments of the present application, when the driving mechanism 5 further includes a lifting mechanism 52, the projection of the slide plate 4 on the plane where the light-emitting side of the first accommodating portion 11 is located is within the area where the light-transmitting opening 111 is located, and the distance between the edge of the slide plate 4 and the edge of the light-transmitting opening 111 is less than or equal to the third distance threshold. In this way, after the slide plate 4 is driven by the translation mechanism 51 to move to the area where the light-transmitting opening 111 is located, the lifting mechanism 52 can be used to drive the slide plate 4 to lift and lower, so that the upper surface of the slide plate 4 is flush with the upper surface of the first accommodating portion 11, thereby ensuring the overall aesthetics of the projection device while realizing the occlusion of the light-transmitting opening 111. Optionally, the third distance threshold is 0.5 mm, 1 mm, 1.5 mm, etc. The embodiments of the present application do not make any limitations in this regard.

[0087] For the convenience of installing the lifting mechanism 52, such as Figure 9As shown in the figure, the projection device further includes a support plate 6; the support plate 6 is fixed in the inner cavity of the first accommodating portion 11 and is located below the sliding plate 4. The support plate 6 has a second opening, and the projection area of the second opening on the plane where the light-emitting side is located covers the area where the light-transmitting opening 111 is located, or coincides with the area where the light-transmitting opening 111 is located; the lifting mechanism 52 is supported on the support plate 6, the lifting mechanism 52 is connected to the sliding plate 4, and can control the sliding plate 4 to rise or fall.

[0088] In this way, since the projection of the second opening on the support plate 6 in the plane of the light-emitting side of the first accommodating portion 11 at least coincides with the area where the light-transmitting opening 111 is located, the support plate 6 does not affect the light beam emitted by the optical engine 2. In addition, when using the projection device, the sliding plate 4 can be controlled to descend by the lifting mechanism 52, and when the upper surface of the sliding plate 4 is located below the light-emitting side of the first accommodating portion 11, the sliding plate 4 can be controlled to move by the translation mechanism 51 to be received in the inner cavity of the first accommodating portion 11. When the projection device is suspended from use, when the sliding plate 4 is driven by the translation mechanism 51 to move to the area where the light-transmitting opening 111 is located, the sliding plate 4 can be controlled to rise by the lifting mechanism 52 to block the light-transmitting opening 111.

[0089] Among them, when the lifting mechanism 52 controls the sliding plate 4 to rise, the upper surface of the sliding plate 4 is flush with the upper surface of the first accommodating portion 11, ensuring the aesthetics when the projection device is not in use. In order to ensure that the upper surface of the sliding plate 4 is flush with the upper surface of the first accommodating portion 11, the thickness of the sliding plate 4 is greater than the thickness of the light-emitting side of the first accommodating portion 11.

[0090] Optionally, the lifting mechanism 52 is a lifting frame. In this way, when the sliding plate 4 is lifted and lowered by the lifting frame, in order to avoid the limitation of the sliding plate 4 caused by the connection between the translation mechanism 51 and the sliding plate 4, the sliding plate 4 can move relative to the translation mechanism 51 or the moving component 53 in a direction perpendicular to the light-emitting side of the first accommodating portion 11. That is, between the sliding plate 4 and the translation mechanism 51 or the moving component 53, only the limit can be carried out in the plane where the light-emitting side of the first accommodating portion 11 is located, and the limit cannot be carried out in the direction perpendicular to the light-emitting side of the first accommodating portion 11.

[0091] Among them, the lifting frame is an electric lifting frame. In actual use, the lifting mechanism 52 further includes a controller, and the controller is electrically connected to the lifting frame. When the controller receives a signal to use the projection device, a fifth control signal is sent to the lifting frame to control the lifting frame to descend, thereby driving the sliding plate 4 to descend. After that, the sliding plate 4 is received in the inner cavity of the first accommodating portion 11 under the action of the translation mechanism 51. When the controller receives a signal to suspend the use of the projection device, after the translation mechanism 51 drives the sliding plate 4 to move to the area where the light-transmitting opening 111 is located, the controller sends a sixth control signal to the lifting frame to control the lifting frame to rise, thereby driving the sliding plate 4 to rise to block the area where the light-transmitting opening 111 is located.

[0092] It should be noted that the controller included in the lifting mechanism 52 and the controller included in the above-mentioned translation mechanism 51 are the same controller. Of course, the controller included in the lifting mechanism 52 and the controller included in the above-mentioned translation mechanism 51 may also be different controllers, and the embodiments of the present application do not limit this.

[0093] Optionally, as Figure 10 shown, the lifting mechanism 52 includes a sliding rod 521 and a rotating frame 522; one side of the support plate 6 near the light-emitting side has a slideway, the sliding rod 521 is slidably limited in the slideway, the sliding rod 521 is fixedly connected to the moving component 53, the first end of the rotating frame 522 is connected to the sliding rod 521, the second end of the rotating frame 522 is connected to the slide plate 4, and the plane where the rotating frame 522 is located is not parallel to the light-emitting side; the support plate 6 also has a baffle. When the slide plate 4 is received in the inner cavity of the first accommodating portion 11, the distance between the first end of the rotating frame 522 and the baffle is greater than the distance between the second end of the rotating frame 522 and the baffle. When the slide plate 4 blocks the area where the light-transmitting opening 111 is located, the distance between the first end of the rotating frame 522 and the baffle is greater than or equal to the distance between the second end of the rotating frame 522 and the baffle.

[0094] In this way, when using the projection device, the translation mechanism 51 drives the sliding rod 521 to slide in the slideway on the support plate 6 through the moving component 53. At this time, as Figure 11 shown, the sliding rod 521 drives the rotating frame 522 to rotate to reduce the angle between the plane where the rotating frame 522 is located and the horizontal plane, so as to realize the lowering of the slide plate 4. Then, the translation mechanism 51 continues to drive the sliding rod 521 to slide through the moving component 53, and the slide plate 4 continues to move under the drive of the sliding rod 521, so as to realize the accommodation of the slide plate 4 in the inner cavity of the first accommodating portion 11. When the projection device is paused from use, the translation mechanism 51 drives the sliding rod 521 to slide in the slideway on the support plate 6 through the moving component 53, and then drives the slide plate 4 to move through the rotating bracket when the sliding rod 521 slides. Since the distance between the first end of the rotating frame 522 and the baffle is greater than the distance between the second end of the rotating frame 522 and the baffle, when the slide plate 4 drives the rotating frame 522 to move, the baffle first contacts the second end of the rotating frame 522 to limit the second end of the rotating frame 522. At this time, as Figure 12 shown, when the sliding rod 521 continues to move, the rotating frame 522 can rotate to increase the angle between the plane where the rotating frame 522 is located and the horizontal plane, so as to realize the raising of the slide plate 4, and make the upper surface of the slide plate 4 flush with the upper surface of the first accommodating portion 11, thereby realizing the blocking of the light-transmitting opening 111 by the slide plate 4.

[0095] Among them, as Figure 10As shown, the rotating frame 522 has a Z-shaped structure. The first end of the rotating frame 522 is rotatably connected to the sliding rod 521, and the second end of the rotating frame 522 is fixedly connected to the sliding plate 4. Alternatively, the first end of the rotating frame 522 is fixedly connected to the sliding rod 521, and the second end of the rotating frame 522 is rotatably connected to the sliding plate 4. In this way, when the first end of the rotating frame 522 is rotatably connected to the sliding rod 521 and the second end of the rotating frame 522 is fixedly connected to the sliding plate 4, the rotating frame 522 can rotate around the second end as the rotation center under the limitation of the baffle, so as to reduce or increase the angle between the plane where it is located and the horizontal plane. When the first end of the rotating frame 522 is fixedly connected to the sliding rod 521 and the second end of the rotating frame 522 is rotatably connected to the sliding plate 4, the rotating frame 522 can rotate around the first end as the rotation center under the limitation of the baffle, so as to reduce or increase the angle between the plane where it is located and the horizontal plane.

[0096] Wherein, the length direction of the slideway on the support plate 6 is parallel to the length direction of the first accommodating portion 11. Of course, the length direction of the slideway on the support plate 6 can also be parallel to the width direction of the first accommodating portion 11, and the embodiments of the present application do not limit this.

[0097] In the embodiments of the present application, in addition to driving the cover plate to be received in the inner cavity of the first accommodating portion 11 or covering the area where the light-transmitting opening 111 is located through the translation mechanism 51 described above, or the translation mechanism 51 and the lifting mechanism 52, of course, the driving mechanism 5 can also include a rotating mechanism, and then drive the cover plate to be received in the inner cavity of the first accommodating portion 11 or cover the area where the light-transmitting opening 111 is located through the rotating mechanism.

[0098] When the driving mechanism 5 includes a rotating mechanism, the sliding plate 4 can be driven by the rotating mechanism to rotate to the lower part of the area where the light-transmitting opening 111 is located, so as to block the area where the light-transmitting opening 111 is located. At this time, the projection of the area where the light-transmitting opening 111 is located on the plane of the sliding plate 4 is completely located on the sliding plate 4. Or drive the sliding plate 4 to rotate to the area where the light-transmitting opening 111 is located through the rotating mechanism, so as to block the area where the light-transmitting opening 111 is located. At this time, the sliding plate 4 coincides with the area where the light-transmitting opening 111 is located.

[0099] Optionally, when the sliding plate 4 rotates to the area where the light-transmitting opening 111 is located, both long sides of the sliding plate 4 have arc chamfers, and the positions corresponding to the two long sides of the sliding plate 4 on the edge of the light-transmitting opening 111 also have arc chamfers, so as to reduce the gap between the edge of the sliding plate 4 and the edge of the light-transmitting opening 111.

[0100] In the embodiments of the present application, the rotating mechanism includes a rotating component; the rotating component is fixed in the first accommodating portion 11, the rotating component is rotatably connected to the sliding plate 4, the sliding plate 4 has a first limiting post, and the first limiting post is movably limited on the side wall of the first accommodating portion 11; the connection point between the rotating component and the sliding plate 4, and the straight line where the first limiting post is located are not parallel to the length direction of the sliding plate 4, and the rotating component is used to adjust the height of the connection point to control the rotation of the sliding plate 4.

[0101] In this way, by adjusting the height of the connection point through the rotating component, that is, by adjusting the height of the local position of the sliding plate 4 through the rotating component, at this time, the sliding plate 4 rotates relative to the side wall of the first accommodating portion 11 based on the first limiting post, so as to realize the rotation of the sliding plate 4. When the sliding plate 4 rotates, the plane where the sliding plate 4 is located rotates, so as to realize being received in the inner cavity of the first accommodating portion 11, or covering the area where the light-transmitting opening 111 is located.

[0102] In some embodiments, the side wall of the first accommodating portion 11 perpendicular to its own length direction has a first sliding groove, and the limiting post is slidably limited in the first sliding groove. In this way, when adjusting the height of the connection point through the rotating component, the sliding plate 4 rotates in the first sliding groove based on the first limiting post to realize the rotation of the sliding plate 4, and at the same time, the first limiting post slides in the first sliding groove.

[0103] Wherein, the first limiting post is located on the wide side of the sliding plate 4. Optionally, the first limiting post is located at the end of the wide side of the sliding plate 4, or at the middle position of the wide side of the sliding plate 4, and the length direction of the first limiting post is perpendicular to the connected wide side.

[0104] Wherein, the connection point between the rotating component and the sliding plate 4 is located at the end of the wide side of the sliding plate 4. Of course, the connection point between the rotating component and the sliding plate 4 is located on the long side of the sliding plate 4, or at other positions of the sliding plate 4, as long as the rotating component can drive the sliding plate 4 to rotate based on the first limiting post, the embodiments of the present application do not limit this.

[0105] It should be noted that when the rotating component is connected to the wide side or the long side of the sliding plate 4, the rotating component is connected to the sliding plate 4 at a position close to the bottom surface, that is, the connection point between the rotating component and the sliding plate 4 is located close to the bottom surface of the sliding plate 4, so as to facilitate the sliding plate 4 to rotate to the area where the light-transmitting opening 111 is located. Wherein, the bottom surface of the sliding plate 4 refers to the surface facing the inner cavity of the first accommodating portion 11 when the sliding plate 4 covers the area where the light-transmitting opening 111 is located.

[0106] Optionally, the first sliding groove is linear, and the length direction of the first sliding groove is not parallel to the lifting direction of the rotating component. For example, the length direction of the first sliding groove is parallel to the plane where the light-transmitting opening 111 is located. Or the first sliding groove is arc-shaped, and the opening of the first sliding groove faces away from the upward rotating component.

[0107] Optionally, the rotating assembly includes a lifting rod. The fixed end of the lifting rod is fixed within the first accommodating portion 11, and the lifting end of the lifting rod is rotatably connected to the sliding plate 4.

[0108] Wherein, the lifting rod is fixed within the first accommodating portion 11 in the vertical direction, that is, the lifting direction of the lifting rod is perpendicular to the plane where the light-transmitting opening 111 is located. Of course, the lifting direction of the lifting rod may also form a certain angle with the vertical direction, and the embodiments of the present application do not limit this.

[0109] Optionally, the rotating assembly includes a lifting rod and a connecting rod. When the length direction of the connecting rod is parallel to the lifting direction of the lifting rod, the fixed end of the lifting rod is fixed within the first accommodating portion 11, the lifting end of the lifting rod is fixedly connected to the first end of the connecting rod, and the second end of the connecting rod is rotatably connected to the sliding plate 4. At this time, the connecting rod and the lifting rod are located on the same straight line.

[0110] When the length direction of the connecting rod is not parallel to the lifting direction of the lifting rod, the fixed end of the lifting rod is fixed within the first accommodating portion 11, the lifting end of the lifting rod is rotatably connected to the first end of the connecting rod, and the second end of the connecting rod is fixedly connected or rotatably connected to the sliding plate 4.

[0111] Exemplarily, the length direction of the connecting rod is perpendicular to the lifting direction of the lifting rod, that is, the length direction of the connecting rod is parallel to the wide side of the sliding plate 4. At this time, the lifting end of the lifting rod is rotatably connected to the first end of the connecting rod, and the second end of the connecting rod is fixedly connected to the sliding plate 4. In this way, by the extension of the connecting rod in the width direction of the sliding plate 4, the rotation radius of the sliding plate 4 can be increased, so as to ensure that when the sliding plate 4 rotates to be received in the inner cavity of the first accommodating portion 11, the plane where the sliding plate 4 is located is parallel to the side wall of the first accommodating portion 11, so that the sliding plate 4 completely avoids the area where the light-transmitting opening 111 is located.

[0112] Wherein, when the first end of the connecting rod is rotatably connected to the lifting end of the lifting rod, in order to ensure the stability of the movement of the first end of the connecting rod, the first end of the connecting rod has a second limiting post, and the side wall of the first accommodating portion 11 has a second sliding groove. The second sliding groove is linear, and the second limiting post is slidably limited within the second sliding groove. In this way, through the limitation of the second sliding groove on the second limiting post, the possibility of the first end of the connecting rod shaking is avoided, the stability of the movement of the connecting rod is ensured, and thus the stability of the rotation of the sliding plate 4 is ensured.

[0113] In some other embodiments, the rotating assembly includes a lifting rod and a connecting rod; the fixed end of the lifting rod is fixed within the first accommodating portion 11, the lifting end of the lifting rod is rotatably connected to the first end of the connecting rod, and the second end of the connecting rod is rotatably connected to the sliding plate 4; the side wall of the first accommodating portion 11 has a groove, and the first limiting post is rotatably limited within the groove.

[0114] In this way, the first limiting post can be rotatably limited within the groove, so that when the lifting rod controls the lifting of the first end of the connecting rod, the driving of the connecting rod is realized, and then the driving of the sliding plate 4 is driven, so that the sliding plate 4 rotates with the center line direction of the first limiting post as the rotation axis.

[0115] Optionally, the groove is located in the lifting direction of the lifting rod. In this way, through the cooperation of the lifting rod and the connecting rod, when the sliding plate 4 rotates and is received in the first accommodating portion 11, the avoidance degree of the sliding plate 4 to the light-transmitting opening 111 is ensured.

[0116] Of course, the groove can also deviate from the lifting direction of the lifting rod, as long as it is ensured that when the sliding plate 4 avoids the light-transmitting opening 111, the folding or unfolding of the projection screen 3 will not be affected. The embodiments of the present application do not limit this.

[0117] Wherein, the first limiting post is located at the end of the wide side of the sliding plate 4. At this time, the groove is located on the side wall perpendicular to its own length direction within the first accommodating portion 11. Of course, the first limiting post is located on the long side of the sliding plate 4. At this time, the groove is located on the side wall parallel to its own length direction within the first accommodating portion 11.

[0118] When the first limiting post is located on the long side of the sliding plate 4, the first limiting post is limited within the groove through the rotation shaft to ensure the rotatability of the first limiting post within the groove.

[0119] It should be noted that in order to prevent the surface where the sliding plate 4 is located from being parallel to the length direction of the connecting rod and both being parallel to the lifting direction of the lifting rod after the sliding plate 4 rotates and is received in the first accommodating portion 11, resulting in difficulty for the lifting rod to drive the first end of the connecting rod to rise, and thus difficulty in driving the sliding plate 4 to rotate to the area where the light-transmitting opening 111 is blocked, the side wall of the first accommodating portion 11 perpendicular to the length direction has a baffle. Among them, the baffle and the connecting rod are on the same side of the lifting rod. In this way, through the limiting of the baffle, the rotation angle of the sliding plate 4 is limited to an acute angle.

[0120] In the embodiments of the present application, when the light-transmitting opening 111 is blocked by the sliding plate 4, as Figure 2 、 Figure 3 、 Figure 4 or Figure 5 shown, the sliding plate 4 includes a first sub-sliding plate 41 and a second sub-sliding plate 42; both the first sub-sliding plate 41 and the second sub-sliding plate 42 are connected to the driving mechanism 5, and the driving mechanism 5 can drive the first sub-sliding plate 41 and the second sub-sliding plate 42 to be received in the inner cavity of the first accommodating portion 11, or drive the first sub-sliding plate 41 and the second sub-sliding plate 42 to block the area where the light-transmitting opening 111 is located.

[0121] Among them, the number of the translation mechanism 51 and the lifting mechanism 52 included in the driving mechanism 5 is 2, that is, the driving mechanism 5 includes two groups of translation mechanisms 51 and two groups of lifting mechanisms 52. One group of translation mechanism 51 and one group of lifting mechanism 52 correspondingly control the first sub-slide plate 41 to realize that the first sub-slide plate 41 is received in the inner cavity of the first accommodating portion 11 or shields the area where the light-transmitting opening 111 is located; the other group of translation mechanism 51 and the other group of lifting mechanism 52 correspondingly control the second sub-slide plate 42 to realize that the second sub-slide plate 42 is received in the inner cavity of the first accommodating portion 11 or shields the area where the light-transmitting opening 111 is located.

[0122] Among them, when the first sub-slide plate 41 and the second sub-slide plate 42 are received in the inner cavity of the first accommodating portion 11 or shield the area where the light-transmitting opening 111 is located, they move in opposite directions. Of course, when the first sub-slide plate 41 and the second sub-slide plate 42 are received in the inner cavity of the first accommodating portion 11 or shield the area where the light-transmitting opening 111 is located, they may also move in the same direction, and the embodiments of the present application do not limit this.

[0123] In the embodiments of the present application, not only can the light-transmitting opening 111 be shielded or avoided in the above manner, but also the first opening of the second accommodating portion 12 can be shielded or avoided in the same or similar manner as the above manner to effectively protect the projection screen received in the second accommodating portion 12. The manner of protecting the projection screen 3 in the embodiments of the present application will not be elaborated herein.

[0124] In the embodiments of the present application, by providing a slide plate on the first accommodating portion, when using the projection device, the slide plate is driven by the cooperation of the translation mechanism and the lifting mechanism to be received in the inner cavity of the first accommodating portion to avoid the light-transmitting opening, so that the light beam emitted by the optical engine passes through the light-transmitting opening and is emitted to the projection screen, ensuring the normal use of the projection device; when the projection device is not in use, the slide plate is driven by the cooperation of the translation mechanism and the lifting mechanism to shield the area where the light-transmitting opening is located, thereby avoiding the exposure of the optical engine and effectively protecting the optical engine. In addition, with the cooperation of the lifting mechanism, when the slide plate shields the area where the light-transmitting opening is located, the upper surface of the slide plate is flush with the upper surface of the first accommodating portion, thereby improving the overall aesthetics of the projection device. In addition, when the projection device is not in use, the projection screen can pass through the first opening and be received in the inner cavity of the second accommodating portion, thereby reducing the overall appearance size of the projection device. When using the projection device, the projection screen can pass through the first opening and unfold, thereby ensuring the normal use of the projection device. In addition, through the limitation of the optical engine and the projection screen by the first accommodating portion and the second accommodating portion, the integration of the optical engine and the projection screen is realized, avoiding the phenomenon of relative displacement between the optical engine and the projection screen, and ensuring the display effect of the picture on the projection screen.

[0125] The above are only illustrative embodiments of the embodiments of the present application and are not intended to limit the embodiments of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the embodiments of the present application shall be included within the protection scope of the embodiments of the present application.

Claims

1. A projection device, characterized in that, The projection device includes: A storage part, which has a first accommodation part and a second accommodation part; An optical engine, which is located in the inner cavity of the first accommodation part. The light-emitting side of the first accommodation part has a light-transmitting opening, and the light beam emitted by the optical engine can pass through the light-transmitting opening; A projection screen, which is fixed in the second accommodation part. The second accommodation part has a first opening. The projection screen can be received in the inner cavity of the second accommodation part through the first opening, or pass through the first opening and unfold. When the projection screen unfolds, the light beam emitted by the optical engine passes through the light-transmitting opening and is incident on the projection screen to display an image; A driving mechanism, which is located in the inner cavity of the first accommodation part; A sliding plate, which is connected to the driving mechanism. The driving mechanism can drive the sliding plate to switch between being received in the inner cavity of the first accommodation part and blocking the area where the light-transmitting opening is located. When the sliding plate is received in the inner cavity of the first accommodation part, it avoids the light-transmitting opening; The driving mechanism includes a translation mechanism and a moving component. The moving component is respectively connected to the translation mechanism and the sliding plate. The translation mechanism drives the sliding plate to move through the moving component. Among them, the moving component is a push plate. The first side of the push plate is fixedly connected to the translation mechanism, and the second side of the push plate is connected to the sliding plate; the side wall of the first accommodation part has a slide rail, and the push plate is slidably limited on the slide rail. The length direction of the slide rail is parallel to the plane where the light-emitting side of the first accommodation part is located.

2. The projection device according to claim 1, wherein The translation mechanism is an electric telescopic rod, which is fixed in the first accommodation part, and the extending end of the electric telescopic rod is connected to the sliding plate.

3. The projection device according to claim 1, wherein, The translation mechanism includes a driving motor and a conveyor belt; The driving motor is fixed in the first accommodation part. The conveyor belt is rotatably limited in the first accommodation part. The driving motor is in transmission connection with the conveyor belt, and the conveyor belt is connected to the sliding plate.

4. The projection device according to claim 1, characterized in that, The translation mechanism includes a toggle button. The side wall of the first accommodation part has a chute. The first end of the toggle button is connected to the sliding plate, and the second end of the toggle button passes through the chute and extends out of the first accommodation part. The toggle button can slide in the chute.

5. The projection device according to claim 4, characterized in that, The chute is located on the side of the first accommodation part facing the projection screen.

6. The projection device according to claim 1, wherein The cross section of the push plate is L-shaped.

7. The projection device according to claim 1, wherein The driving mechanism further includes a lifting mechanism, and the projection device further includes a support plate; The support plate is fixed in the inner cavity of the first accommodation part and is located below the sliding plate. The support plate has a second opening, and the projection area of the second opening on the plane where the light-emitting side is located covers the area where the light-transmitting opening is located, or coincides with the area where the light-transmitting opening is located; The lifting mechanism is supported on the support plate. The lifting mechanism is connected to the sliding plate and can control the sliding plate to rise or fall.

8. The projection device according to claim 7, wherein The lifting mechanism includes a sliding rod and a rotating frame; One side of the support plate near the light-emitting side has a slideway, the sliding rod is slidably limited in the slideway, and the sliding rod is fixedly connected to the moving assembly; The first end of the rotating frame is connected to the sliding rod, the second end of the rotating frame is connected to the sliding plate, and the plane where the rotating frame is located is not parallel to the light-emitting side; The support plate further has a baffle. When the sliding plate is received in the inner cavity of the first accommodating portion, the distance between the first end of the rotating frame and the baffle is greater than the distance between the second end of the rotating frame and the baffle. When the sliding plate blocks the area where the light-transmitting opening is located, the distance between the first end of the rotating frame and the baffle is greater than or equal to the distance between the second end of the rotating frame and the baffle.

9. The projection device according to claim 8, wherein The rotating frame has a Z-shaped structure. The first end of the rotating frame is rotatably connected to the sliding rod, and the second end of the rotating frame is fixedly connected to the sliding plate, or the first end of the rotating frame is fixedly connected to the sliding rod, and the second end of the rotating frame is rotatably connected to the sliding plate.

10. The projection device according to claim 8, wherein, The length direction of the slideway is parallel to the length direction of the first accommodating portion.

11. The projection device according to claim 1, characterized in that The sliding plate includes a first sub-sliding plate and a second sub-sliding plate; Both the first sub-sliding plate and the second sub-sliding plate are connected to the driving mechanism, and the driving mechanism can drive the first sub-sliding plate and the second sub-sliding plate to be received in the inner cavity of the first accommodating portion, or drive the first sub-sliding plate and the second sub-sliding plate to block the area where the light-transmitting opening is located.

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