Projector

Abstract

The utility model relates to the technical field of projectors, and provides a projector which comprises a rotating shaft, a first mounting box, a second mounting box, an optical machine module and a power supply module, the first mounting box is rotatably connected with the second mounting box through the rotating shaft, the optical machine module is mounted on the first mounting box, and the power supply module is mounted on the second mounting box. And the power supply module is electrically connected with the light machine module. According to the projector, the light machine module and the power supply module are installed in the first installation box and the second installation box which are different, the first installation box and the second installation box are rotationally connected through the rotating shaft, the projection angle of the light machine module can be adjusted by rotating the first installation box, a rotating support does not need to be additionally arranged, and therefore the projector is more compact in structure and convenient to use. The space occupation of the projector is reduced, and the portability of the projector is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of projectors, and particularly relates to a projector. BACKGROUND

[0002] In the related art, a projector usually adopts a rotating support to increase the main body of the projector to adjust the scene viewing angle of the projector, resulting in a large overall volume of the projector, which is inconvenient to carry and store. CONTENT OF THE UTILITY MODEL

[0003] Embodiments of the application provide a projector to solve the problem of a large volume and poor portability of the existing projector.

[0004] In a first aspect, embodiments of the application provide a projector, comprising:

[0005] a rotating shaft;

[0006] a first mounting box and a second mounting box, the first mounting box being rotationally connected with the second mounting box through the rotating shaft;

[0007] an optical engine module, installed in the first mounting box;

[0008] a power supply module, installed in the second mounting box, and electrically connected with the optical engine module.

[0009] In some embodiments of the application, the first mounting box is provided with a cover plate support on a side close to the second mounting box, the second mounting box is provided with a rotating disc support on a side corresponding to the cover plate support, and the cover plate support is rotationally connected with the rotating disc support through the rotating shaft.

[0010] In some embodiments of the application, an installation cavity is formed between the cover plate support and the rotating disc support, and the rotating shaft is arranged in the installation cavity.

[0011] In some embodiments of the application, a limiting groove is arranged on a side of the cover plate support facing the rotating disc support, and a limiting column is arranged on the rotating disc support, and the limiting column is slidingly arranged in the limiting groove.

[0012] In some embodiments of the application, a striker is arranged on a side of the cover plate support facing the rotating disc support, a plurality of grooves matched with the striker are arranged on the rotating disc support in a circumferential direction, and the striker is adapted to sequentially hit different grooves during rotation of the cover plate support relative to the rotating disc support.

[0013] In some embodiments of the application, heat dissipation holes are arranged in a region corresponding to the cover plate support and the optical engine module;

[0014] And / or, the rotating disc support is provided with heat dissipation holes.

[0015] In some embodiments of the present application, the second mounting box has a side surface facing the first mounting box and a support surface, the side surface and the support surface are different surfaces, and the axis of the rotating shaft is arranged perpendicular to the support surface.

[0016] In some embodiments of the present application, a middle part of the rotating shaft is formed with a threading hole, and a power supply wire of the power supply module is arranged in the threading hole and connected with the optical engine module.

[0017] In some embodiments of the present application, the projector further comprises a sound module, the sound module is mounted on the second mounting box, and the sound module is located above the power supply module.

[0018] In some embodiments of the present application, the second mounting box is provided with a mounting bracket, the mounting bracket is formed with a first mounting cavity and a second mounting cavity arranged at intervals along the height direction, the sound module is mounted in the first mounting cavity, and the power supply module is mounted in the second mounting cavity.

[0019] In some embodiments of the present application, the second mounting box is provided with a heat dissipation hole.

[0020] In some embodiments of the present application, the projector further comprises a heat dissipation module, the heat dissipation module is mounted on the first mounting box, and the heat dissipation module is located below the optical engine module.

[0021] The projector provided by the embodiments of the present application comprises a rotating shaft, a first mounting box, a second mounting box, an optical engine module and a power supply module, the first mounting box is rotationally connected with the second mounting box through the rotating shaft, the optical engine module is mounted on the first mounting box, the power supply module is mounted on the second mounting box, and the power supply module is electrically connected with the optical engine module. By mounting the optical engine module and the power supply module in different first mounting box and second mounting box respectively, and rotationally connecting the first mounting box with the second mounting box through the rotating shaft, the adjustment of the projection angle of the optical engine module can be realized by rotating the first mounting box, without the need of additionally setting a rotating bracket, so that the structure of the projector is more compact, the space occupation of the projector is reduced, and the portability of the projector is improved.

[0022] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0024] For a more complete understanding of the present application and the advantages thereof, reference is now made to the following description taken in connection with the accompanying drawings in which: Like reference numerals refer to like parts throughout the several views thereof.

[0025] Figure 1 An exploded structural schematic diagram of a projector is provided for an embodiment of the present application.

[0026] Figure 2 A structural schematic diagram of a projector is provided for an embodiment of the present application Figure 1 .

[0027] Figure 3 A cooperation schematic diagram of a cover bracket, a rotating shaft and a rotating disc bracket is provided for an embodiment of the present application Figure 1 .

[0028] Figure 4 A cooperation schematic diagram of a cover bracket, a rotating shaft and a rotating disc bracket is provided for an embodiment of the present application Figure 2 .

[0029] Figure 5 A sectional schematic diagram of A-A in Figure 4 .

[0030] Figure 6 A structural schematic diagram of a rotating disc bracket is provided for an embodiment of the present application.

[0031] Figure 7 A structural schematic diagram of a projector is provided for an embodiment of the present application Figure 2 .

[0032] Figure 8 A structural schematic diagram of a projector in the prior art is provided.

[0033] Reference Signs:

[0034] 100, first mounting box; 110, cover bracket; 111, mounting cavity; 112, limiting groove; 113, heat dissipation hole;

[0035] 200, second mounting box; 210, rotating disc bracket; 211, limiting column; 212, groove; 220, mounting bracket; 221, first mounting cavity; 222, second mounting cavity;

[0036] 300, rotating shaft; 310, threading hole;

[0037] 400, optical engine module;

[0038] 500, power supply module;

[0039] 600, sound module;

[0040] 700, heat dissipation module;

[0041] 800, master module;

[0042] 900, perception algorithm module. DETAILED DESCRIPTION

[0043] The embodiments of the present application will be further described in details with reference to the drawings and embodiments. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0044] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the embodiments of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0045] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0046] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0047] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0048] In the related art, referring to Figure 8 As shown in the figure, the projector usually adopts the way of increasing a rotating support to the projector main body to realize the adjustment of the scene viewing angle of the projector, resulting in a large overall volume of the projector, which is inconvenient to carry and store.

[0049] The present application provides a kind of projector, to solve the problem of the large volume of existing projector, poor portability. The following will be combined with the attached Figures 1-7 It will be illustrated.

[0050] The projector provided by the present application is combined Figure 1 And Figure 2 As shown in the figure, it includes rotating shaft 300, first mounting box 100 and second mounting box 200, and optical machine module 400 and power supply module 500. The first mounting box 100 is rotatably connected with the second mounting box 200 through the rotating shaft 300, the optical machine module 400 is installed in the first mounting box 100, the power supply module 500 is installed in the second mounting box 200, and the power supply module 500 is electrically connected with the optical machine module 400.

[0051] It can be understood that the power supply module 500 in the embodiment can be a battery module built in the projector; can also be a power adapter arranged in the projector, the power adapter can be connected with an external power supply in a plug-in manner to supply power to the optical engine module 400; can also be a capacitor, a solar power supply or other forms of power supply device, as long as it can supply power to the optical engine module 400. For example, the projector is a miniature projector with a built-in battery module, which can be used without plugging in. The first mounting box 100 is rotatably connected to the second mounting box 200 through the rotating shaft 300, so that the first mounting box 100 can rotate relative to the second mounting box 200, thereby adjusting the projection angle of the optical engine module 400 in the first mounting box 100, realizing the projection angle adjustment of the projector, so that the projector can be placed flat and projected along the horizontal direction, or adjusted according to needs to be projected upward or downward relative to the horizontal direction, for example, the projector can be adjusted within the range of -45° to 45° relative to the horizontal direction, matching the full scene angle requirement. Of course, it can also be arranged to be adjusted within other angle ranges, which are not limited here.

[0052] By installing the optical engine module 400 and the power supply module 500 in the two independent first mounting box 100 and second mounting box 200 respectively, and connecting the first mounting box 100 and the second mounting box 200 through the rotating shaft 300, the user can simply rotate the first mounting box 100 to realize the projection angle adjustment of the optical engine module 400, which is simple and convenient to operate, and meets the needs of different use scenarios, and omits the rotating bracket required in the traditional design, so that the overall structure of the projector is more compact, the space occupation of the projector is reduced, and the projector is more portable and convenient for users to carry.

[0053] Further, the separate arrangement of the optical engine module 400 and the power supply module 500 helps to improve the heat dissipation effect of the projector, avoid heat source concentration, and improve the stability and service life of the projector. Moreover, since the power supply module 500 is usually heavy, it is installed in the second mounting box 200, and the optical engine module 400 is installed in the first mounting box 100, which can effectively disperse the overall weight. When adjusting the projection angle, the weight of the power supply module 500 will not directly affect the rotation of the optical engine module 400, so that the first mounting box 100 is more stable when rotating based on the second mounting box 200. After the projector is placed on a horizontal surface, the second mounting box 200 can also remain horizontal during the rotation of the first mounting box 100, reducing the shaking caused by uneven weight distribution and ensuring the stability of the projected image.

[0054] In an alternative embodiment, with reference to Figure 1 and Figure 2As shown, the second mounting box 200 has a side facing the first mounting box 100 and a supporting surface, the side and the supporting surface are different surfaces, for example, the side is a surface of the second mounting box 200 away from the first mounting box 100, and the supporting surface is a surface of the second mounting box 200 close to the first mounting box 100, and the axis of the rotating shaft 300 is perpendicular to the supporting surface, so that the first mounting box 100 and the second mounting box 200 are arranged side by side to form a rotating structure of a type of Rubik's Cube, which reduces the occupied volume, keeps the structure compact, and facilitates the rotation of the first mounting box 100, thereby facilitating the adjustment of the projection angle of the light engine module 400.

[0055] In an optional embodiment, referring to Figure 1 and Figure 3 As shown, the side of the first mounting box 100 close to the second mounting box 200 is provided with a cover bracket 110, and the side of the second mounting box 200 corresponding to the cover bracket 110 is provided with a rotating disc bracket 210, and the cover bracket 110 is rotationally connected to the rotating disc bracket 210 through the rotating shaft 300.

[0056] Optionally, the cover bracket 110 can be a side plate or a part of a side plate of the first mounting box 100, and the rotating disc bracket 210 can be a side plate or a part of a side plate of the second mounting box 200. Through the design of the cover bracket 110 and the rotating disc bracket 210, the contact area during rotation can be increased, thereby improving the stability of the entire projector during angle adjustment.

[0057] Exemplarily, the rotating shaft 300 can be a damping rotating shaft, which is provided with a damping mechanism inside, and can provide a certain resistance during rotation, so that the rotation process is more stable. The damping rotating shaft enables the light engine module 400 to achieve precise hovering during angle adjustment, and the user can accurately position the best projection angle according to the projection requirements without additional fixing measures, thereby simplifying the operation process. In addition, the damping rotating shaft can reduce the shaking of the light engine module 400 caused by external vibration or touching, thereby maintaining the stability of the projection picture.

[0058] In an optional embodiment, referring to Figure 1 , Figure 4 and Figure 5 As shown, an installation cavity 111 is formed between the cover bracket 110 and the rotating disc bracket 210, and the rotating shaft 300 is arranged in the installation cavity 111.

[0059] In this embodiment, the rotating shaft 300 is at least partially embedded in the installation cavity 111 and is not directly exposed to the outside, so that the rotating shaft 300 is not visually visible, eliminating the sense of abruptness that may be caused by the traditional exposed rotating shaft 300, making the appearance of the projector more smooth and beautiful, thereby improving the appearance neatness and integration of the projector, and also making the structure of the projector more compact, which is conducive to reducing the overall volume of the projector.

[0060] In an alternative embodiment, as shown in Figure 3 、 Figure 4 and Figure 6 , the cover bracket 110 is provided with a limiting slot 112 on one side facing the turntable bracket 210, and the turntable bracket 210 is provided with a limiting post 211 which is slidingly arranged in the limiting slot 112.

[0061] In this embodiment, the limiting slot 112 can be a predetermined track or groove, and the limiting slot 112 can be in the shape of a circular arc, the length of which determines the maximum angle of rotation of the optical engine module 400. When the cover bracket 110 rotates relative to the turntable bracket 210, the limiting post 211 and the limiting slot 112 slide relative to each other. When the limiting post 211 slides to the end of the limiting slot 112, the cover bracket 110 is prevented from continuing to rotate, thereby limiting the rotation angle of the optical engine module 400 and preventing the optical engine module 400 from rotating excessively, ensuring stable use of the projector.

[0062] In an alternative embodiment, since the projection angle adjustment of the optical engine module 400 does not need to be adjusted within a range of 360 degrees, the angle adjustment range of the optical engine module 400 can be set to 90 degrees, which can meet the daily needs of users.

[0063] In an alternative embodiment, as shown in Figure 3 、 Figure 4 and Figure 6 , the cover bracket 110 is provided with a striker (not shown) on one side facing the turntable bracket 210, and the turntable bracket 210 is provided with a plurality of grooves 212 matching the striker at intervals in the circumferential direction. During the rotation of the cover bracket 110 relative to the turntable bracket 210, the striker is adapted to hit different grooves 212 in sequence.

[0064] When the user rotates the first mounting box 100 (i.e. the optical engine module 400), the striker on the cover bracket 110 will hit the grooves 212 on the turntable bracket 210 in sequence, producing a series of "click" sounds. This sound feedback provides an intuitive feel for the user, allowing the user to perceive the angle and speed of rotation, thereby reducing the likelihood of misoperation and improving the overall user experience.

[0065] In an alternative embodiment, as shown in Figure 1 and Figure 3 , the cover bracket 110 is provided with a heat dissipation hole 113 in the area corresponding to the optical engine module 400. The design of the heat dissipation hole 113 allows air to circulate, thereby accelerating the dissipation of heat inside the optical engine module 400, preventing overheating of the equipment, effectively reducing the internal temperature of the optical engine module 400, reducing the impact of thermal stress on electronic components, and thereby prolonging the service life of the projector.

[0066] In an optional embodiment, the rotating disc support 210 is provided with heat dissipation holes 113, which are beneficial to air circulation and heat dissipation, and can also dissipate heat for the power supply module 500 in the second mounting box 200.

[0067] For example, as shown in Figure 3 The shape of the heat dissipation holes 113 can be circular, rectangular, arc-shaped or other shapes, and the number of the heat dissipation holes 113 can be multiple, which are not limited in the embodiment.

[0068] For example, the cover plate support 110 and the rotating disc support 210 can be formed by an integrated mold of super-hard aluminum alloy, which has high strength, light weight and excellent wear resistance, and improves the stability and durability during rotation. The surface of the cover plate support 110 and the rotating disc support 210 can be provided with honeycomb-shaped heat dissipation and ventilation holes, which effectively improve the heat dissipation and ventilation efficiency and meet the whole machine heat dissipation requirement of the projector.

[0069] In an optional embodiment, as shown in Figure 1 and Figure 5 The middle part of the rotating shaft 300 is formed with a threading hole 310, and the power supply wire of the power supply module 500 is threaded through the threading hole 310 and connected with the optical engine module 400. By integrating the threading function in the rotating shaft 300, the requirement for internal space is reduced, and the overall design of the projector is more compact. The cable is threaded inside the rotating shaft 300, which reduces the possibility of cable entanglement and interference during the rotation of the first mounting box 100. When adjusting the projection angle, the cable will not be stretched or twisted, which ensures the flexibility of rotation and improves the use stability of the projector.

[0070] In an optional embodiment, as shown in Figure 1 The projector further comprises a sound module 600, which is installed in the second mounting box 200 and located above the power supply module 500.

[0071] In the embodiment, the sound module 600 is installed in the second mounting box 200 and separately arranged from the optical engine module 400, which avoids the influence of the sound module 600 on the heat dissipation effect of the optical engine module 400. The sound module 600 is installed above the power supply module 500, which is usually heavy, which is beneficial to reduce the gravity center of the projector and improve the stability during the angle adjustment of the optical engine module 400.

[0072] In an optional embodiment, as shown in Figure 1 and Figure 7As shown, the second mounting box 200 is provided with a mounting bracket 220, the mounting bracket 220 is formed with a first mounting cavity 221 and a second mounting cavity 222 arranged in the height direction, the sound module 600 is installed in the first mounting cavity 221, and the power supply module 500 is installed in the second mounting cavity 222.

[0073] By arranging the first mounting cavity 221 and the second mounting cavity 222 in the vertical direction, the space inside the second mounting box 200 is effectively utilized, so that the overall design is more compact. The first mounting cavity 221 and the second mounting cavity 222 are arranged in a spaced manner, which helps to isolate the sound module 600 and the power supply module 500, reduces the interference between them, such as electromagnetic interference and heat transfer, and improves the use stability of the projector.

[0074] In an optional embodiment, the second mounting box 200 is provided with a heat dissipation hole 113, which can be arranged at the bottom, top or side of the second mounting box 200, and can be arranged according to the specific heat dissipation requirement, to help dissipate the heat generated by the power supply module 500 and the sound system during operation.

[0075] In an optional embodiment, referring to Figure 1 As shown, the projector further comprises a heat dissipation module 700, the heat dissipation module 700 is installed in the first mounting box 100, and the heat dissipation module 700 is located below the optical engine module 400.

[0076] Exemplarily, the heat dissipation module 700 can comprise a turbine fan, the turbine fan is placed below the optical engine module 400, and the airflow generated by the fan is used to directly cool the optical engine module 400, thereby improving the heat dissipation efficiency.

[0077] In some optional embodiments, referring to Figure 1 As shown, the projector further comprises a main control module 800 and a perception algorithm module 900, the optical engine module 400, the heat dissipation module 700, the main control module 800 and the perception algorithm module 900 in the first mounting box 100 on the left are designed in an integrated manner, the rotating shaft 300 is embedded and hidden through the cover bracket 110, the power supply module 500 and the sound module 600 in the second mounting box 200 on the right are installed as a whole, and then are connected with the rotating shaft 300 through the rotating disc bracket 210, to realize the rotating connection between the first mounting box 100 and the second mounting box 200. The cover bracket 110, the rotating shaft 300 and the rotating disc bracket 210 are limited through mutual cooperation, to realize the damping suspension at any angle within 90 degrees, to achieve the user experience of adjusting the angle of the overhead projection or the floor projection and matching the projection full-scene angle requirement.

[0078] The projector overall structure provided by the embodiment of the application adopts a design similar to a magic cube, comprising a rotating shaft 300, a first mounting box 100 and a second mounting box 200, a light machine module 400 and a power supply module 500, the first mounting box 100 is rotationally connected with the second mounting box 200 through the rotating shaft 300, the light machine module 400 is installed in the first mounting box 100, the power supply module 500 is installed in the second mounting box 200, and the power supply module 500 is electrically connected with the light machine module 400. By installing the light machine module 400 and the power supply module 500 in different first mounting box 100 and second mounting box 200 respectively, and rotationally connecting the first mounting box 100 and the second mounting box 200 through the rotating shaft 300, the adjustment of the projection angle of the light machine module 400 can be realized by rotating the first mounting box 100, without the need of additionally setting a rotating support, so that the structure of the projector is more compact, the space occupation of the projector is reduced, and the portable performance of the projector is improved.

[0079] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the present application, but not to limit the present application. Although the present application is described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present application do not deviate from the spirit and scope of the present application, and should be covered in the protection scope of the present application.

Claims

1. A projector characterized by comprising: The projector comprises: a rotating shaft; a first mounting box and a second mounting box, the first mounting box being rotatably connected to the second mounting box through the rotating shaft; a light engine module installed in the first mounting box; a power supply module installed in the second mounting box, and the power supply module being electrically connected to the light engine module.

2. The projector of claim 1, wherein, The first mounting box is provided with a cover plate support on a side close to the second mounting box, the second mounting box is provided with a rotating disc support on a side corresponding to the cover plate support, and the cover plate support is rotatably connected to the rotating disc support through the rotating shaft.

3. The projector of claim 2, wherein, An installation cavity is formed between the cover plate support and the rotating disc support, and the rotating shaft is arranged in the installation cavity.

4. The projector of claim 2, wherein, The cover plate support is provided with a limiting slot on a side facing the rotating disc support, and the rotating disc support is provided with a limiting column, which is slidingly arranged in the limiting slot.

5. The projector of claim 2, wherein, The cover plate support is provided with a striker on a side facing the rotating disc support, and the rotating disc support is provided with a plurality of grooves matching the striker and spaced apart in a circumferential direction, and the striker is adapted to sequentially hit different grooves during rotation of the cover plate support relative to the rotating disc support.

6. The projector of claim 2, wherein, The cover plate support and the light engine module are provided with heat dissipation holes corresponding to the areas. And / or, the rotating disc support is provided with heat dissipation holes.

7. The projector according to any of claims 1-6, characterized in that The second mounting box has a side facing the first mounting box and a supporting surface, the side and the supporting surface are different surfaces, and the axis of the rotating shaft is perpendicular to the supporting surface.

8. The projector according to any one of claims 1 to 6, characterized in that A middle part of the rotating shaft is formed with a threading hole, and a power supply line of the power supply module is arranged in the threading hole and connected to the light engine module. And / or, the projector further comprises a sound module, the sound module is installed in the second mounting box, and the sound module is located above the power supply module.

9. The projector of claim 8, wherein, The second mounting box is provided with a mounting support, the mounting support is formed with a first installation cavity and a second installation cavity spaced apart in a height direction, the sound module is installed in the first installation cavity, and the power supply module is installed in the second installation cavity.

10. The projector according to any one of claims 1 to 5, characterized in that, The second mounting box is provided with heat dissipation holes. And / or, the projector further comprises a heat dissipation module, the heat dissipation module is installed in the first mounting box, and the heat dissipation module is located below the light engine module.

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