CN217506350U

CN217506350U - Modular projector

Info

Publication number: CN217506350U
Application number: CN202221517963.5U
Authority: CN
Inventors: 任乐军; 吴贵来
Original assignee: Changsha Cre Electronic Technology Co ltd
Current assignee: Changsha Cre Electronic Technology Co ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-09-27
Anticipated expiration: 2032-06-17

Abstract

The utility model provides a modularized projector, which comprises an optical machine and a shell, wherein the optical machine is arranged inside the shell, the optical machine comprises an optical machine shell, a lens module, an image display module, a heat dissipation module and a mainboard, the interior of the optical machine shell is sequentially provided with a first cavity, a lens module installation cavity and an image display module installation cavity from top to bottom, one side of the first cavity is provided with a lens installation port, the lens is arranged on the lens installation port, one side of the lens module installation cavity is provided with a lens module installation port, the lens module is inserted into the interior of the lens module installation cavity through the lens module installation port, one side of the image display module installation cavity is provided with an image display module installation port, the image display module is inserted into the interior of the image display module installation cavity through the image display module installation port, the mainboard is arranged below the optical machine shell, and a gap is arranged between the mainboard and the optical machine shell, the heat dissipation module is arranged on two opposite sides of the optical machine shell and the main board, so that the projector is more convenient to maintain.

Description

Modular projector

Technical Field

The utility model relates to a relevant technical field of projecting apparatus specifically is a modularization projecting apparatus.

Background

Along with electronic equipment's popularization, the masses field of vision is walked into gradually to the projecting apparatus, the projecting apparatus has small in size, the display surface is big, advantages such as convenient removal, it is multi-purpose in conferences, teaching, occasion such as show, begin to walk into gradually during the family simultaneously, more and more people intend to replace the audio-visual equipment of TV as the family with the projecting apparatus, current trade generally adopts dispersion stick assembly process, production assembly maintenance efficiency is low, need single part installation, if when bad phenomenon appears needing to maintain, need tear whole optical system apart and carry out maintenance operation again, therefore the utility model discloses the main problem of solving is through carrying out modular design to the part of the different functions of projecting apparatus to improve the convenience of later maintenance.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned problem that prior art exists, the utility model provides a projector for overcome the above-mentioned defect among the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a modular projector comprises an optical machine and a shell, wherein the optical machine is arranged inside the shell and comprises an optical machine shell, a lens module, an image display module, a heat dissipation module and a mainboard,

the interior of ray apparatus casing is equipped with first chamber, lens module installation cavity and image display module installation cavity from the top down in proper order, one side in first chamber is equipped with the camera lens installing port, the camera lens sets up on the camera lens installing port, be equipped with lens module installing port on one side of lens module installation cavity, the lens module by lens module installing port cartridge is in the inside of lens module installation cavity, be provided with image display module installing port on one side of image display module installation cavity, the image display module by image display module installing port cartridge is in the inside of image display module installation cavity, the mainboard sets up the below of ray apparatus casing, just the mainboard with be provided with the clearance between the ray apparatus casing, the heat dissipation module sets up relative both sides on ray apparatus casing and the mainboard.

In one embodiment, the optical-mechanical housing is further provided with a second cavity inside, the second cavity is located below the image display module mounting cavity, one side of the periphery of the second cavity and the bottom opening are arranged,

the heat dissipation module comprises a ventilation assembly and a heat dissipation assembly, the ventilation assembly comprises a fan, a fan and a first heat dissipation module, the fan is arranged inside the second cavity, the first heat dissipation module is arranged on the side wall of the second cavity in a closed manner, an opening in the second cavity and the lens module mounting port are formed in the side wall of the second cavity, the first heat dissipation module is located above the mainboard, the heat dissipation assembly is arranged on one side, opposite to the first heat dissipation module, of the optical machine shell, the heat dissipation assembly and the mainboard are arranged side by side, the fan is located between the optical machine shell and the heat dissipation assembly, and the fan and the mainboard are arranged side by side.

In one embodiment, the display device further comprises an image display module mounting opening cover plate, and the image display module mounting opening cover plate covers the image display module mounting opening.

In one embodiment, a sliding strip is arranged on the outer side wall of the lens module, a sliding groove is arranged on the inner wall of the lens module installation cavity, and the sliding strip is slidably installed in the sliding groove.

In one embodiment, the display module comprises a display panel, a display panel mounting groove is formed in the inner wall of the image display module mounting cavity, and the display panel is mounted inside the display panel mounting groove.

In one embodiment, the fan comprises a fan seat and fan bodies, the fan seat is of a rectangular frame structure, the upper end of the fan seat is connected with the optical engine shell, and at least two fan bodies are arranged in the fan seat side by side.

In one embodiment, a partition board is arranged inside the fan base, at least two ventilation holes are formed in the partition board, the diameter of each ventilation hole is smaller than or equal to the outer diameter of a fan blade in the fan body, the fan body is fixed on the partition board, and the central point of the fan blade in the fan body and the central point of each ventilation hole are arranged in a collinear mode.

In one embodiment, the heat dissipation assembly includes a first heat pipe and a plurality of heat dissipation fins, the heat dissipation fins are arranged at intervals layer by layer, one end of the first heat pipe is connected with the optical machine housing, and the other end of the first heat pipe sequentially penetrates through the heat dissipation fins.

In one embodiment, the optical machine further comprises a main board support, a through hole is formed in the middle of the main board support, the upper side wall of the main board support is connected with the optical machine shell, and the main board is arranged on the lower side wall of the main board support.

In one embodiment, the longitudinal section of the first heat dissipation module is in an "L" shape, the side walls of the inner side and the outer side of the first heat dissipation module are respectively provided with a plurality of first fins, the first fins are arranged at intervals, the longitudinally arranged part of the first heat dissipation module is located at the outer side of the optical machine housing, and the transversely arranged part of the first heat dissipation module is located between the optical machine housing and the main board support.

Compared with the prior art, the utility model provides a modular projector, which comprises an optical machine and a shell, wherein the optical machine is arranged inside the shell, the optical machine comprises an optical machine shell, a lens module, an image display module, a heat dissipation module and a mainboard, the optical machine shell is internally provided with a first cavity, a lens module installation cavity and an image display module installation cavity from top to bottom in sequence, one side of the first cavity is provided with a lens installation port, the lens is arranged on the lens installation port, one side of the lens module installation cavity is provided with a lens module installation port, the lens module is inserted into the lens module installation cavity through the lens module installation port, one side of the image display module installation cavity is provided with an image display module installation port, the image display module is inserted into the image display module installation cavity through the image display module installation port, the mainboard is arranged below the optical machine shell, and be provided with the clearance between mainboard and the ray apparatus casing, the heat dissipation module sets up the both sides relative on ray apparatus casing and mainboard, compare in current projecting apparatus, the utility model provides a lens module and display module in the projecting apparatus are connected with the ray apparatus casing through the mode of cartridge, the camera lens simultaneously, also adopt the detachable connected mode between heat dissipation module and mainboard and the ray apparatus casing, consequently, very big make things convenient for carrying out dismouting and maintenance to the lens, the lens module, image display module, heat dissipation module and mainboard, change or maintain the camera lens, need not to disassemble projecting apparatus overall structure during lens and the display panel for the maintenance efficiency of whole projecting apparatus has obtained improvement by a wide margin.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention;

fig. 2 is a schematic view of the structure of the present invention;

fig. 3 is a schematic structural view of a lens module according to the present invention;

FIG. 4 is an enlarged view of the latch of FIG. 3;

FIG. 5 is a cross-sectional view taken at B-B of FIG. 3;

FIG. 6 is a schematic diagram of the right-view internal partial structure of the present invention;

fig. 7 is a schematic right-view structural diagram of the present invention;

fig. 8 is a left side view structure diagram of the present invention.

Detailed Description

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

As shown in fig. 1-8, for convenience of description, the references of "up", "down", "left", "right", "front" and "rear" directions in the present invention are based on the directions shown in fig. 1;

a modular projector comprises an optical machine 100 and a housing, the optical machine 100 is disposed inside the housing, the optical machine 100 comprises an optical machine housing 1, a lens 2, a lens module 3, an image display module, a heat dissipation module 5 and a main board 6,

a first cavity 101, a lens module mounting cavity 102 and an image display module mounting cavity 103 are sequentially arranged in the optical machine shell 1 from top to bottom, a lens mounting port is arranged on one side of the first cavity 101, a lens 2 is arranged on the lens mounting port, a lens module mounting port is arranged on one side of the lens module mounting cavity 102, a lens module 3 is inserted in the lens module mounting cavity 102 through the lens module mounting port, an image display module mounting port is arranged on one side of the image display module mounting cavity 103, an image display module is inserted in the image display module mounting cavity 103 through the image display module mounting port, a mainboard 6 is arranged below the optical machine shell 1, a gap is formed between the mainboard 6 and the optical machine shell 1, and heat dissipation modules 5 are arranged on two opposite sides of the optical machine shell 1 and the mainboard 6;

further, a second cavity 104 is further arranged inside the optical machine housing 1, the second cavity 104 is positioned below the image display module mounting cavity 103, one side of the periphery of the second cavity 104 and the bottom opening are arranged,

the heat dissipation module comprises a ventilation component and a heat dissipation component, the ventilation component comprises a fan 501, a fan 502 and a first heat dissipation module 03, the fan 501 is arranged inside the second cavity 104, the first heat dissipation module 03 is arranged on the side wall of the second cavity 104 to seal the opening on the second cavity 104 and the lens module mounting port, the first heat dissipation module 03 is positioned above the main board 6, the heat dissipation component is arranged on the side of the optical machine housing 1 opposite to the first heat dissipation module 03, the heat dissipation component and the main board 6 are arranged side by side, the fan 502 is positioned between the optical machine housing 1 and the heat dissipation component, and the fan 502 and the main board 6 are arranged side by side, therefore, heat generated inside the optical machine 100 is extracted by the fan 502, part of the heat is conducted to the outside air by the first heat dissipation module 03, meanwhile, under the action of suction force generated by the fan 502, the outside air is blown to the heat dissipation component through the gap between the optical machine housing 1 and the main board 6, meanwhile, the heat generated by the mainboard 6 during working is taken away, and finally, the heat is completely dissipated to the outside of the shell through the through holes on the shell under the action of the heat dissipation assembly, so that the aim of quickly dissipating the heat of the optical machine 100 is fulfilled;

on the other hand, lens module 3 and display module are connected with ray apparatus casing 1 through the mode of cartridge respectively, also adopt detachable connected mode such as screw simultaneously between camera lens 2, heat dissipation module 5 and mainboard 6 and the ray apparatus casing 1, when needing to maintain or change any one of them part, need not to disassemble projecting apparatus overall structure, consequently make the maintenance efficiency of whole projecting apparatus obtain improvement by a wide margin.

In this embodiment, still include image display module assembly installing port apron 7, image display module assembly installing port apron 7 lid closes on the image display module assembly installing port, and is concrete, and image display module assembly installing port apron 7's both ends are connected with the lateral wall of image display module assembly installation cavity 103 through the screw respectively.

In this embodiment, the outer side wall of the lens module 3 is provided with a sliding bar 301, the inner wall of the lens module installation cavity 102 is provided with a sliding groove, and the sliding bar 301 is slidably installed in the sliding groove to realize the purpose that the lens module 3 is inserted into the lens module installation cavity 102.

Specifically, the lens module 3 includes a lens fixing body 301, a light-transmitting cavity 302 is vertically penetrated through the lens fixing body 301, lens mounting grooves 303 are respectively formed on the upper surface and the lower surface of the lens fixing body 301, lenses 304 are mounted in the lens mounting grooves 303, a gap is formed between the upper lens 304 and the lower lens 304, and clampers are arranged on the outer sides of the upper lens 304 and the lower lens 304 and can lock the lenses 304 in the lens mounting grooves 303;

use this device, when needs change the maintenance to lens module 3 in this device, only need with lens module 3 from lens module installation cavity 102 on the lens module installing port pull out can, then loosen the binding clasp, disassemble lens 304, change into new lens 304 in two sets of lens mounting grooves 303, the binding clasp relocks lens 304 in lens mounting groove 303, wholly install lens module 3 in lens module installing cavity 102 again, accomplish the swift replacement to lens module 3 through the mode of slot, compare in current projecting apparatus, a plurality of lenses 304 can take out or install simultaneously with the form of whole module, the dismouting maintenance of lens 304 with the module formula has been made things convenient for, dismouting lens module 3 need not to disassemble projecting apparatus overall structure, lens 304 maintenance efficiency has obtained the improvement by a wide margin of disassembling.

Preferably, the side of the lens fixing body 301 is equipped with and locks groove 305, the binding clasp includes the locking clip 306 that is equipped with in locking groove 305, both ends are equipped with locking head 307 about locking clip 306, locking head 307 has elasticity, one side that the lens fixing body 301 upper and lower face is close to locking groove 305 is equipped with locking protrusion 308, the locking protrusion 308 outside is equipped with the inclined plane, locking protrusion 308 inboard is equipped with vertical face, locking head 307 inboard is equipped with the inclined plane, the locking head 307 outside is equipped with vertical face, one side that locking head 307 is close to the lens fixing body 301 is equipped with the locking plane, locking plane department is equipped with the abrasionproof layer.

When the lens 304 needs to be fixed in the lens mounting groove 303, the locking clip 306 is aligned with the locking groove 305, the locking clip 306 is pushed inwards, the inclined surface of the inner side of the locking head 307 abuts against the inclined surface of the locking protrusion 308, the locking protrusion 308 pushes the locking head 307 to be opened for a certain distance, the locking head 307 continues to be pushed inwards until the locking head 307 is separated from the locking protrusion 308, the locking head 307 rebounds inwards, the locking plane of the locking head 307 abuts against the lens 304, the vertical surface of the locking head 307 can abut against the vertical surface of the locking protrusion 308, and the position of the locking head 307 is locked, and the locking plane of the locking head 307 locks the lens 304.

Preferably, the position of the bottom of the lens mounting groove 303 for supporting the lens 304 is provided with an elastic body, the surface friction coefficient of the elastic body is small, friction on the lens 304 is reduced, and when the clamp is taken out, the elastic body pops the lens 304 for a certain distance, so that the lens 304 is convenient to replace.

When the lens 304 needs to be taken out, the clamp is taken off firstly, the elastic body ejects the lens 304 outwards, the situation that the lens 304 is clamped in the lens mounting groove 303 is avoided, and the lens 304 is conveniently and quickly taken out from the lens mounting groove 303.

Preferably, the clamper includes the clamp plate 309 that lens mounting groove 303 side was equipped with, be equipped with first permanent magnet 3010 in the clamp plate 309, the wall body of clamp plate 309 with the opening part of lens mounting groove 303 rotates to be connected, printing opacity chamber 302 side wall body is equipped with external intercommunication and rotates hole 3011, be equipped with pivot 3012 in the rotation hole 3011, pivot 3012 is located the inboard edge of printing opacity chamber 302 and establishes central permanent magnet 3013, pivot 3012 is equipped with hexagonal hole 3014 through the tip that rotates hole 3011 and extend to the external world.

The hexagon socket head cap spanner is inserted into hexagonal hole 3014, rotates hexagonal hole 3014, and hexagonal hole 3014 drives central permanent magnet 3013 and rotates, and central permanent magnet 3013 and first permanent magnet 3010 homopolar repulsion, opposite sex attract each other to outwards promote clamping plate 309 or inwards attract, realized utilizing magnetic force control clamping plate 309 to rotate, realized disassembling the function of lens 304 fast.

In this embodiment, the display module includes display panel 401, be provided with display panel mounting groove 1031 on the inner wall of image display module installation cavity 103, display panel 401 cartridge is in the inside of display panel mounting groove 1031, when needing to maintain or change display panel 401, at first pull down image display module installation mouth apron 7, then just can conveniently take out display panel 401 from display panel mounting groove 1031 on the inner wall of image display module installation cavity 103 can, then insert display panel 401 or new display panel 401 after the maintenance again in display panel mounting groove 1031, then adorn image display module installation mouth apron 7, can accomplish the maintenance or the change operation to display panel 401, need not to disassemble projecting apparatus overall structure.

In this embodiment, the fan 502 includes the fan seat 5021 and the fan body 5022, the fan seat 5021 is the frame structure of rectangle, the upper end of the fan seat 5021 is connected with the optical machine casing 1 and is fixed, the inside at least two fan bodies 5022 that is provided with side by side of fan seat 501, of course, the quantity of fan body 5022 can increase or reduce according to the demand of design, this embodiment is preferably two, therefore, compare in the traditional projector that adopts single fan body 5022, the projecting apparatus that adopts two or more fan bodies 5022 is fast in heat dissipation speed, and the heat dissipation effect is better.

In this embodiment, a partition 5023 is disposed inside the fan seat 5021, at least two ventilation holes are disposed on the partition 5023, the diameter of the ventilation holes is less than or equal to the outer diameter of the fan blade in the fan body 5022, the fan body 5022 is fixed on the partition 5023, the center point of the fan blade in the fan body 5022 and the center point of the ventilation holes in the partition 5023 are arranged in a collinear manner,

further, the corners around the fan body 5022 are provided with threaded through holes respectively, the positions corresponding to the threaded through holes on the fan body 5022 on the partition 5023 are also provided with threaded through holes respectively, the threaded through holes on the fan body 5022 and the partition 5023 are connected through screws, the fan body 5022 is fixed on the fan seat 5021 through the partition 5023 and the threaded through holes and matched screws, and meanwhile, the normal operation of the fan body 5022 can be guaranteed.

Preferably, for better fixed fan seat 5021, make whole fan 502 appear rocking phenomenon when preventing that fan body 5022 from moving, the design is located and still is provided with the connecting plate between ray apparatus casing 1 and the baffle 5023, and the one end and the ray apparatus casing 1 of connecting plate are connected, the other end is connected with baffle 5023.

Preferably, in order to simplify the structure of whole projecting apparatus, promote the packaging efficiency of whole projecting apparatus, further promote the joint strength between ray apparatus casing 1, fan seat 5021 and the connecting plate simultaneously, design ray apparatus casing 1, fan seat 5021 and connecting plate integrated into one piece setting.

In this embodiment, the heat dissipation assembly includes a first heat pipe 504 and a plurality of heat dissipation fins 505, the plurality of heat dissipation fins 505 are disposed at intervals layer by layer, one end of the first heat pipe 504 is connected to the optical device casing 1, and the other end of the first heat pipe 504 penetrates the plurality of heat dissipation fins 505 in sequence and is connected and fixed with the plurality of heat dissipation fins, preferably, a light source component of the optical device 100 is disposed inside a connection portion of the optical device casing 1 and one end of the first heat pipe 504, so that heat generated by the light source component can be cooled by air through the fan 501, and can be dissipated by direct conduction with the first heat pipe 504.

In this embodiment, still include mainboard support 8, be provided with the through-hole in the middle of the mainboard support 8, pass through bolted connection between the last lateral wall of mainboard support 8 and the ray apparatus casing 1, mainboard 6 passes through the screw and the double-screw bolt setting is on the lower lateral wall of mainboard support 8, under the effect of the suction that produces like this when fan 502 operates, external wind blows to fin 505 via the clearance between ray apparatus casing 1 and the mainboard 6, take away the heat that mainboard 6 during operation produced simultaneously, under the effect of fin 505 and fan 502, the heat is finally all given off the outside of shell.

In this embodiment, the longitudinal cross section of the first heat dissipation module 03 is "L" shaped, the side walls of the inner side and the outer side of the first heat dissipation module 03 are respectively provided with a plurality of first fins 5031, the plurality of first fins 5031 are arranged at intervals, the longitudinally arranged portion of the first heat dissipation module 03 is located at the outer side of the optical engine housing 1, and the transversely arranged portion of the first heat dissipation module 03 is located between the optical engine housing 1 and the motherboard bracket 8, because the motherboard bracket 8 is provided with a through hole, heat generated by the motherboard 6 can be further dissipated upwards through the first heat dissipation module 503.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A modular projector comprises an optical machine and a shell, wherein the optical machine is arranged inside the shell, and is characterized in that the optical machine comprises an optical machine shell, a lens module, an image display module, a heat dissipation module and a mainboard,

2. The modular projector as claimed in claim 1, wherein a second cavity is further disposed inside the optical engine housing, the second cavity is located below the image display module mounting cavity, a side of the periphery of the second cavity and a bottom opening of the second cavity are disposed,

3. The modular projector as in claim 2, further comprising an image display module mount cover plate that covers the image display module mount.

4. A modular projector as claimed in any one of claims 1 to 3, wherein a sliding bar is provided on an outer side wall of the lens module, a sliding groove is provided on an inner wall of the lens module mounting cavity, and the sliding bar is slidably mounted in the sliding groove.

5. The modular projector as claimed in claim 4, wherein the display module comprises a display panel, a display panel mounting groove is formed on an inner wall of the image display module mounting cavity, and the display panel is mounted inside the display panel mounting groove.

6. The modular projector as claimed in claim 2, wherein the fan includes a fan base and a fan body, the fan base is a rectangular frame structure, the upper end of the fan base is connected to the carriage, and at least two fan bodies are disposed inside the fan base side by side.

7. The modular projector as claimed in claim 6, wherein a partition is provided inside the fan base, at least two ventilation holes are provided in the partition, the diameter of the ventilation holes is smaller than or equal to the outer diameter of the fan blade in the fan body, the fan body is fixed on the partition, and the center point of the fan blade in the fan body and the center point of the ventilation holes are arranged in a collinear manner.

8. The modular projector as claimed in claim 2, wherein the heat dissipation assembly comprises a first heat pipe and a plurality of heat dissipation fins, the heat dissipation fins are disposed at intervals, one end of the first heat pipe is connected to the optical engine housing, and the other end of the first heat pipe sequentially penetrates through the heat dissipation fins.

9. The modular projector as claimed in claim 2, further comprising a main board bracket, wherein a through hole is disposed in the middle of the main board bracket, an upper sidewall of the main board bracket is connected to the optical engine housing, and the main board is disposed on a lower sidewall of the main board bracket.

10. The modular projector as claimed in claim 9, wherein the longitudinal section of the first heat dissipation module is "L" shaped, the first heat dissipation module has a plurality of first fins disposed on the inner and outer side walls of the first heat dissipation module, the first fins are spaced from each other, the longitudinal portion of the first heat dissipation module is located outside the optical engine housing, and the transverse portion of the first heat dissipation module is located between the optical engine housing and the motherboard bracket.