Projector mounting device and projection apparatus

Abstract

The application relates to a projector mounting device and a projection equipment, the mounting device comprising a bearing platform, a convex piece and a locking piece; the bearing platform is configured to bear a projector, the bearing platform is provided with a positioning slot, the positioning slot comprises a clamping position; the convex piece can be inserted into the positioning slot and slid along the positioning slot to the clamping position, and is configured to be connected with the projector; the locking piece is arranged on the bearing platform and is configured to lock the projector to the bearing platform when the convex piece is located in the clamping position. The traditional alignment of the projector and the bearing platform relying on eyes and hands is replaced by mechanical cooperation alignment of the positioning slot and the convex piece, the installation efficiency of the projector is improved, and the risk of projector installation deviation can be reduced.

Description

Technical Field

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

[0002] Projectors are typically mounted on a stand, which supports the projector when it is in use and stores it when not in use. In some technologies, the projector is secured to the stand's support platform with screws. This requires multiple adjustments to the projector's position to align the screw holes on the projector with the screw holes on the support platform, making the process complex. Utility Model Content

[0003] This application discloses a projector mounting device and a projection device, which can position the projector on a support platform and lock it to the support platform.

[0004] In a first aspect, this application discloses a projector mounting device, including a support platform, a protrusion, and a locking member; the support platform is configured to support a projector, and the support platform is provided with a positioning groove, the positioning groove including a holding position; the protrusion can be inserted into the positioning groove and slide along the positioning groove to the holding position, and is configured to connect the projector; the locking member is provided on the support platform and is configured to lock the projector to the support platform when the protrusion is in the holding position.

[0005] In the aforementioned installation device, the protruding part is placed into the positioning groove for pre-positioning. The projector is then lowered onto the support platform, and the protruding part is slid along the positioning groove to the locking position by gentle pushing and sliding. This positions the protruding part, achieving precise alignment between the projector and the support platform. At this point, the locking component secures the projector to the support platform. The positioning groove, which allows the protruding part to slide, reduces the difficulty of inserting the protruding part, making it easier to align and insert it. The positioning groove also guides the protruding part to the locking position for automatic projector correction, preventing the projector from shifting relative to the support platform. Positioning the projector first via the positioning groove and then locking it with the locking component is convenient. It replaces the traditional method of aligning the projector and support platform by eye and hand coordination with mechanical alignment via the positioning groove and the protruding part, improving installation efficiency and reducing the risk of projector misalignment.

[0006] The positioning groove includes a receiving section and a limiting section. The limiting section has a first end and a second end opposite to each other in a first direction. The first end is connected to the receiving section, and the holding position is located at the second end. The size of the receiving section in the first direction and / or the second direction is larger than that of the limiting section. The receiving section can accommodate the insertion of the protrusion. The two opposite inner walls of the limiting section contact the two sides of the protrusion along the second direction and guide the protrusion to move from the first end to the second end. The second direction is perpendicular to the first direction.

[0007] The protrusion is pre-positioned by accommodating the insertion of the receiving section. The protrusion is then stopped by the two opposing inner walls of the limiting section to position it in the second direction and guide its movement from the first end to the second end, thus defining its position. The receiving section has a large area, which reduces the difficulty of insertion as the protrusion moves closer to the support platform, allowing for easier alignment and insertion.

[0008] The protrusion includes a slider that slides in the positioning groove; a retaining ring is provided at the opening of the limiting section, which is configured to stop the slider from moving away from the bearing platform.

[0009] The retaining ring can stop the slider within the limit section, preventing the protrusion from moving away from the support platform and causing the slider to move out of the positioning groove from the opening.

[0010] Among them, the two inner walls of the limiting section opposite each other along the second direction are provided with buffer pads, and the buffer pads are configured to abut against the protrusions.

[0011] When the protrusion moves within the limiting section, the buffer pad increases the friction between the protrusion and the inner wall of the limiting section, preventing the protrusion from sliding freely or from rigidly colliding with the inner wall of the limiting section. This buffers the impact force between the protrusion and the inner wall of the limiting section, reducing the risk of rigid collision damage to the projector.

[0012] The support platform is provided with a connection hole, and a locking component is inserted through the connection hole and configured to connect to the projector.

[0013] When the protrusion is in the holding position, the locking part passes through the connecting hole and connects to the projector, which can fix the projector to the support platform, eliminating the need for separate positioning of the projector and the connecting hole, making the operation simple and safe.

[0014] The locking element is configured as a positioning pin; the mounting device also includes a pressing locking structure configured to abut against the locking element and switch between a first state and a second state under the pushing action of the locking element; when the pressing locking structure is in the first state, the locking element is inserted into the projector; when the pressing locking structure is in the second state, the pressing locking structure drives the locking element out of the projector.

[0015] When the pressing and locking structure is in the first state, it is in a compressed state, allowing the locking member to be inserted into the projector. When the pressing and locking structure is pushed by the locking member, it switches to the second state, extending to push the locking member out of the projector. By pressing the locking member, the pressing and locking structure can switch between the first and second states under the push of the locking member, facilitating the avoidance of the locking member to fix the projector to the support platform, or driving the locking member out of the projector to release the projector from the support platform.

[0016] The bearing platform is provided with two positioning slots at intervals. Each positioning slot is configured to insert a protrusion. Along the interval direction between the two positioning slots, locking members are provided at intervals with the positioning slots. In the direction perpendicular to the interval direction, the locking members are located between the two positioning slots.

[0017] Two protrusions are positioned by two positioning slots, allowing the projector to be more stably positioned on the support platform. After the locking device secures the projector to the support platform, the locking device and the two positioning slots form a triangular structure, making the projector connection stable and less prone to shaking.

[0018] The locking element is configured as a magnetic element, which is located on the upper surface of the support platform and is configured to attract the projector.

[0019] When the protrusion is in the holding position, the magnetic component magnetically attracts the lower surface of the projector to fix the projector to the support platform.

[0020] The locking element is configured as two elastic hooks, which are spaced apart on the upper surface of the support platform and are configured to elastically hold one side of the projector respectively.

[0021] When the protrusion is in the holding position, the two elastic hooks elastically hold one side of the projector respectively, thereby holding the opposite sides of the projector and fixing the projector to the support platform.

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

[0023] In the aforementioned projection equipment, the traditional method of aligning the projector with the support platform by coordinating the eyes and hands is replaced by mechanical alignment through positioning grooves and protrusions. This improves the installation efficiency of the projector and reduces the risk of misalignment. Attached Figure Description

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

[0025] Figure 1 This is a schematic diagram of the structure of the mounting device after the projector is installed in one embodiment of this application.

[0026] Figure 2 yes Figure 1 Exploded view of the installation device.

[0027] Figure 3 yes Figure 1 A partial schematic diagram of the installation device after being cut along point III-III.

[0028] Figure 4 yes Figure 1 A partial schematic diagram of the installation device after being cut along line IV-IV.

[0029] Figure 5 yes Figure 2 A magnified view of the middle V section.

[0030] Explanation of main component symbols

[0031] 100. Mounting device; 10. Supporting platform; 11. Positioning groove; 1101. Holding position; 111. Receiving section; 112. Limiting section; 112a. First end; 112b. Second end; 1121. Retaining ring; 1122. Buffer pad; 12. Connecting hole; 20. Protrusion; 21. Slider; 30. Locking element; 200. Projector; X. First direction; Y. Second direction. Detailed Implementation

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

[0033] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0035] Projectors are typically mounted on a stand, which supports the projector when it is in use and stores it when not in use. In some technologies, the projector is secured to the stand's support platform with screws. This requires multiple adjustments to the projector's position to align the screw holes on the projector with the screw holes on the support platform, making the process complex.

[0036] This application discloses a projector mounting device, including a support platform, a protrusion, and a locking member; the support platform is configured to support a projector, and the support platform is provided with a positioning groove, the positioning groove including a holding position; the protrusion can be inserted into the positioning groove and slide along the positioning groove to the holding position, and is configured to connect the projector; the locking member is provided on the support platform and is configured to lock the projector to the support platform when the protrusion is in the holding position.

[0037] In the aforementioned installation device, the protruding part is placed into the positioning groove for pre-positioning. The projector is then lowered onto the support platform, and the protruding part is slid along the positioning groove to the locking position by gentle pushing and sliding. This positions the protruding part, achieving precise alignment between the projector and the support platform. At this point, the locking component secures the projector to the support platform. The positioning groove, which allows the protruding part to slide, reduces the difficulty of inserting the protruding part, making it easier to align and insert it. The positioning groove also guides the protruding part to the locking position for automatic projector correction, preventing the projector from shifting relative to the support platform. Positioning the projector first via the positioning groove and then locking it with the locking component is convenient. It replaces the traditional method of aligning the projector and support platform by eye and hand coordination with mechanical alignment via the positioning groove and the protruding part, improving installation efficiency and reducing the risk of projector misalignment.

[0038] The embodiments of this application will be further described below with reference to the accompanying drawings. Unless otherwise specified, the various embodiments in this application can be combined with each other.

[0039] Please see Figure 1 This application discloses a projection device, including a projector mounting device 100 and a projector 200, wherein the mounting device 100 is used to support and fix the projector 200.

[0040] Please combine Figure 2 The mounting device 100 includes a support platform 10, a protrusion 20, and a locking member 30. The support platform 10 is configured to support a projector 200. The protrusion 20 is disposed on the projector 200. The locking member 30 is disposed on the support platform 10 and configured to lock the projector 200 to the support platform 10. Exemplarily, the projector 200 may also be a video player, a music player, or other device requiring support.

[0041] In some embodiments, the support platform 10 is a support area for supporting the projector 200.

[0042] Please see Figure 3 and Figure 4 In some embodiments, the protrusion 20 is detachably connected to the projector 200 and protrudes from the lower surface of the projector 200 to facilitate connection and assembly between the protrusion 20 and the projector 200. Exemplarily, the protrusion 20 is threadedly connected to the projector 200.

[0043] Please combine Figures 2 to 4 In some implementations, the support platform 10 is provided with a positioning groove 11, which includes a retaining position 1101. The protrusion 20 can be inserted into the positioning groove 11 and slide along the positioning groove 11 to the retaining position 1101.

[0044] In use, the protrusion 20 is placed into the positioning groove 11 for pre-positioning, the projector 200 is lowered onto the support platform 10, and the protrusion 20 is slid along the positioning groove 11 to the holding position 1101 by gently pushing and sliding it to position the protrusion 20, thereby achieving precise alignment between the projector 200 and the support platform 10. At this time, the locking member 30 can lock the projector 200 onto the support platform 10.

[0045] Understandably, compared to the positioning groove 11 that is adapted to the protrusion 20, the positioning groove 11 that allows the protrusion 20 to slide can reduce the difficulty of inserting the protrusion 20, making it easier for the protrusion 20 to be aligned and inserted into the positioning groove 11; the positioning groove 11 can also guide the protrusion 20 to slide to the holding position 1101 to automatically correct the projector 200 and prevent the projector 200 from shifting relative to the support platform 10.

[0046] Please combine Figure 2 , Figure 4 and Figure 5 In some embodiments, the positioning groove 11 includes a receiving section 111 and a limiting section 112. The limiting section 112 has a first end 112a and a second end 112b opposite each other in a first direction X. The first end 112a communicates with the receiving section 111, and a retaining position 1101 is provided at the second end 112b. The size of the receiving section 111 in the first direction X and / or the first direction Y is larger than that of the limiting section 112, and the receiving section 111 is accommodating the insertion of the protrusion 20. The two opposing inner walls of the limiting section 112 contact the two sides of the protrusion 20 along the first direction Y and guide the protrusion 20 to move from the first end 112a to the second end 112b. In the illustrated embodiment, the size of the receiving section 111 in both the first direction X and the second direction Y is larger than that of the limiting section 112.

[0047] Understandably, the protrusion 20 is inserted through the receiving section 111 to preposition the protrusion 20. The two inner walls of the limiting section 112 stop the protrusion 20 to position it in the first direction Y and guide the protrusion 20 to move from the first end 112a to the second end 112b, thereby positioning the protrusion 20 in the first direction X. At this time, without external force driving the projector 200 and the protrusion 20 to move, the protrusion 20 is positioned in the holding position 1101.

[0048] The larger the area of ​​the receiving section 111, the more the receiving section 111 can reduce the difficulty of inserting the protrusion 20 when it moves close to the support platform 10, making it easier for the protrusion 20 to be aligned with the receiving section 111 and inserted.

[0049] In some embodiments, the first direction X and the second direction Y are two mutually perpendicular horizontal directions.

[0050] Please see Figure 2 In some embodiments, the support platform 10 is provided with two positioning slots 11 spaced apart, each positioning slot 11 being configured to insert a protrusion 20. A locking member 30 is spaced apart from the positioning slots 11 along the spacing direction of the two positioning slots 11. The locking member 30 is located between the two positioning slots 11 along the direction perpendicular to the spacing direction. The spacing direction of the two positioning slots 11 is parallel to the second direction Y. The direction perpendicular to the spacing direction is the first direction X.

[0051] The two protrusions 20 are positioned by the two positioning slots 11, allowing the projector 200 to be more stably positioned on the support platform 10. After the locking member 30 fixes the projector 200 to the support platform 10, the locking member 30 and the two positioning slots 11 form a triangular structure, allowing one locking member 30 to stably fix the projector 200 to the support platform 10. In other embodiments, two or more locking members 30 may also be provided.

[0052] Please see Figures 3 to 5 In some embodiments, the protrusion 20 includes a slider 21, which is slidably disposed in the positioning groove 11. A retaining ring 1121 is provided at the opening of the limiting section 112, which is configured to stop the slider 21 from moving away from the support platform 10.

[0053] The retaining ring 1121 can stop the slider 21 from moving away from the support platform 10 in the vertical direction, so as to stop the slider 21 within the limiting section 112 and prevent the protrusion 20 from moving away from the support platform 10, causing the slider 21 to move out of the positioning groove 11 from the opening.

[0054] Please combine Figure 3 In some embodiments, the limiting segment 112 has two inner walls opposite each other along the second direction Y with buffer pads 1122, and the buffer pads 1122 are configured to abut against the protrusion 20.

[0055] Understandably, the buffer pad 1122 can cover the inner wall of the limiting section 112, and the buffer pad 1122 can also be provided only in the holding position 1101.

[0056] When the protrusion 20 moves within the limiting section 112, the buffer pad 1122 can increase the friction between the protrusion 20 and the inner wall of the limiting section 112, which can prevent the protrusion 20 from sliding freely or from rigidly colliding with the inner wall of the limiting section 112, thereby buffering the impact force between the protrusion 20 and the inner wall of the limiting section 112 and reducing the risk of rigid collision damage to the projector 200.

[0057] Please combine Figure 3 and Figure 4 In some embodiments, a buffer pad 1122 can also be provided at the second end 112b of the limiting segment 112, connecting the two inner walls opposite each other along the second direction Y, to increase the friction between the protrusion 20 and the limiting segment 112 when the protrusion 20 moves to the holding position 1101, so as to prevent the protrusion 20 from slipping and shocking, thereby reducing the risk of the protrusion 20 colliding with the limiting segment 112 at the moment it slides to the second end 112b.

[0058] In some embodiments, the cushioning pad 1122 is made of a soft, deformable material, including but not limited to rubber.

[0059] Please see Figure 2 In some embodiments, both the support platform 10 and the projector 200 are provided with connection holes 12. When the protrusion 20 is in the holding position 1101, the connection hole 12 of the support platform 10 corresponds to the connection hole (not shown) of the projector 200. The locking member 30 can be inserted into the connection hole of the projector 200 from the connection hole 12 of the support platform 10 so that the projector 200 is fixed relative to the support platform 10.

[0060] In some embodiments, the locking member 30 is a threaded member, such as a screw, bolt, or bolt. The connecting hole 12 is a threaded hole. By rotating the threaded member, the connecting hole 12 of the support platform 10 and the projector 200 can be threadedly connected, so that the projector 200 is fixed relative to the support platform 10.

[0061] When the protrusion 20 is in the holding position 1101, the locking member 30 passes through the connecting hole 12 and connects to the projector 200, which can fix the projector 200 to the support platform 10, eliminating the need to separately position the connecting hole 12 between the projector 200 and the support platform 10, making the operation simple and safe.

[0062] In some embodiments, the locking member 30 is configured as a locating pin, such as a cylindrical pin, a conical pin, or a diamond pin. By inserting the locating pin into the connection hole 12 between the support platform 10 and the projector 200, the projector 200 can be fixed relative to the support platform 10. The locating pin is interference-fitted with the connection hole 12, making it difficult for the locating pin to loosen or fall off without external force.

[0063] In some embodiments, the mounting device 100 further includes a press-locking structure (not shown). The press-locking structure is disposed in the connection hole of the projector 200 and is configured to abut against the locking member 30. When the locking member 30 is a positioning pin, the press-locking structure can switch between a first state and a second state under the push of the locking member 30.

[0064] When the pressing and locking structure is in the first state, it is in a compressed state, and the locking member 30 is inserted into the projector 200. When the pressing and locking structure is in the second state, it extends to push the locking member 30, thereby driving the locking member 30 out of the projector 200, so as to facilitate the removal of the locking member 30 and the cancellation of the projector 200's fixation to the support platform 10.

[0065] Understandably, when the pressing and locking structure is in the first state, the pressing and locking member 30 can switch the pressing and locking structure to the second state, and when the pressing and locking structure is in the first state, the pressing and locking member 30 can switch the pressing and locking structure to the first state.

[0066] Therefore, by pressing the locking member 30, the pressing locking structure can switch between the first state and the second state under the pushing of the locking member 30, which facilitates avoiding the locking member 30 so that the locking member 30 fixes the projector 200 to the support platform 10, or drives the locking member 30 out of the projector 200 to cancel the fixation between the projector 200 and the support platform 10.

[0067] The press-lock mechanism is a press-type spring lock. The working principle of the press-type spring lock is that when the locking element 30 is pressed, the spring is compressed, and the lock is locked in place via a snap-fit ​​connection. To unlock, simply press the locking element 30 again to release the lock, causing the spring to return and move the locking element 30. The press-type spring lock is a commonly used lock, frequently found in wardrobes, ballpoint pens, and other applications.

[0068] In some embodiments, the locking member 30 is configured as a magnetic member (not shown), which is disposed on the upper surface of the support platform 10 and configured to attract the projector 200. It is understood that the lower surface of the projector 200 may be partially made of metal, or a metal mating part may be provided on the lower surface of the projector 200. When the protrusion 20 is in the holding position 1101, the magnetic member corresponds to the metal portion of the lower surface of the projector 200, or to the mating part, enabling the magnetic member to attract and fix the projector 200 to the support platform 10. Exemplarily, the magnetic member is a magnet.

[0069] Specifically, the magnetic component can be located between the positioning groove 11 and the locking component 30, or it can be located at other positions on the bearing platform 10.

[0070] In some embodiments, the locking member 30 is configured as two elastic hooks, which are spaced apart on the upper surface of the support platform 10 and are configured to elastically hold one side of the projector 200 respectively.

[0071] The projector 200 is provided with buckles on both sides of the second direction Y for engaging with the elastic hooks. When the protrusion 20 is in the holding position 1101, the two elastic hooks elastically hold one side of the projector 200 respectively to hold the opposite sides of the projector 200, thereby holding and fixing the projector 200 to the support platform 10.

[0072] In some embodiments, the locking member 30 is a helical force-multiplying clamp (quick clamping structure) (not shown). The helical force-multiplying clamp includes a knob, a lever arm, and a clamping structure. The knob is rotatably connected to the lower surface of the support platform 10, and a screw is fixedly installed inside the knob. The screw is threaded and passes through the support platform 10. One end of the lever arm is hinged to the screw, and the other end of the lever arm is fixedly connected to the clamping structure. By rotating the knob, the screw rotates relative to the support platform 10, causing the screw to move vertically relative to the support platform 10. The screw pushes or pulls the lever arm to rotate, causing the lever arm to rotate and drive the clamping structure to engage or disengage from the slot at the bottom of the projector 200, thereby achieving a strong clamping or quick release of the projector 200. The helical force-multiplying clamp converts the rotational torque input by the operator into the vertical movement of the screw, and then uses the lever arm to amplify and change the direction of this axial force, driving the clamping structure to move, ultimately achieving the clamping and releasing of the clamping structure on the connection hole 12 of the projector 200. The entire process is efficient, labor-saving, and self-locking. Spiral force-increasing clamps are often used in industrial fields that require efficient and powerful manual clamping, such as machining center clamps, inspection fixtures, and welding positioning.

[0073] In some embodiments, the locking member 30 is a spring-assisted self-locking double-position locking mechanism (not shown in the figure), which is mainly used in scenarios requiring rapid opening and closing, automatic locking, and bidirectional stability. The spring-assisted self-locking double-position locking mechanism is located at the holding position 1101. When the protrusion 20 is located at the holding position 1101, the working principle of the spring-assisted self-locking double-position locking mechanism is to use the downward pressure of the protrusion 20 to open and deform the double-sided hook arms through the inclined surface, and to drive the hook arms to rebound and embed into the slot of the protrusion 20 through the built-in spring to achieve automatic locking.

[0074] When using the installation device 100, the projector 200 is first positioned by the positioning groove 11 and then locked by the locking member 30. This is convenient to operate and replaces the traditional method of aligning the projector 200 with the support platform 10 by eye and hand coordination (such as manually adjusting the position of the projector 200 so that the support platform 10 of the projector 200 corresponds to the connection hole 12 of the projector 200) with the mechanical alignment by the positioning groove 11 and the protrusion 20. This improves the installation efficiency of the projector 200 and reduces the risk of misalignment of the projector 200.

[0075] The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A projector mounting device, characterized in that, include: A support platform is configured to support a projector, and the support platform is provided with a positioning slot, the positioning slot including a holding position; The protrusion is capable of being inserted into the positioning groove and sliding along the positioning groove to the holding position, and is configured to connect to the projector; A locking element is provided on the support platform and configured to lock the projector to the support platform when the protrusion is in the holding position.

2. The installation device according to claim 1, characterized in that, The positioning groove includes a receiving section and a limiting section. The limiting section has a first end and a second end opposite to each other in a first direction. The first end is connected to the receiving section, and the holding position is located at the second end. The receiving section is larger than the limiting section in the first direction and / or the second direction. The receiving section is capable of accommodating the protrusion. The two opposing inner walls of the limiting section contact the two sides of the protrusion along the second direction and guide the protrusion to move from the first end to the second end. The second direction is perpendicular to the first direction.

3. The installation device according to claim 2, characterized in that, The protrusion includes a slider that is slidably disposed in the positioning groove; a retaining ring is provided at the opening of the limiting section, and the retaining ring is configured to prevent the slider from moving away from the bearing platform.

4. The installation device according to claim 2, characterized in that, The limiting segment has buffer pads on its two inner walls that are opposite each other along the second direction, and the buffer pads are configured to abut against the protrusion.

5. The installation device according to any one of claims 1 to 4, characterized in that, The support platform is provided with a connection hole, and the locking member passes through the connection hole and is configured to connect to the projector.

6. The installation device according to claim 5, characterized in that, The locking element is configured as a locating pin; the mounting device further includes a press-locking structure configured to abut against the locking element and switch between a first state and a second state under the push of the locking element. When the press-locking structure is in the first state, the locking member is inserted into the projector; When the press-locking structure is in the second state, the press-locking structure drives the locking member to exit the projector.

7. The installation device according to claim 5, characterized in that, The support platform is provided with two positioning slots at intervals, each positioning slot is configured to insert a protrusion, the locking member is provided at intervals with the positioning slots along the interval direction of the two positioning slots, and the locking member is provided between the two positioning slots along the perpendicular direction of the interval direction.

8. The installation device according to claim 1, characterized in that, The locking element is configured as a magnetic element, which is disposed on the upper surface of the support platform and configured to attract the projector.

9. The installation device according to claim 1, characterized in that, The locking element is configured as two elastic hooks, which are spaced apart on the upper surface of the support platform and configured to elastically hold one side of the projector respectively.

10. A projection device, characterized in that, It includes a projector and a mounting device as described in any one of claims 1 to 9, the mounting device being configured to mount the projector.

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