Totally-enclosed LCD projection ray machine module and projector

Abstract

The utility model discloses a totally enclosed LCD projection ray machine module and projector, including ray machine part and heat dissipation part, ray machine part includes first shell, second shell and LCD subassembly, first shell and second shell are fixedly connected to form the cavity, LCD subassembly is installed between first shell and second shell, and the heat dissipation part is installed in the cavity. The LCD assembly is fixedly connected with the first shell and the second shell, a micro water pump is arranged in the LCD assembly, a driving motor is connected to the position, corresponding to the micro water pump, of the outer portion of the LCD assembly, the micro water pump is in non-rigid connection with the driving motor through a magnetic coupling, the heat dissipation part comprises an LCD assembly radiator, and the LCD assembly radiator is arranged on the outer side of the light machine part. The LCD component radiator is fixedly connected with the first shell and the second shell; according to the invention, the cooling liquid is driven by the driving motor to circulate, heat on the LCD is taken away, sealing foam is filled among all parts of the light machine, dust is prevented from entering the light machine part, the heat dissipation efficiency is further improved, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to LCD projector technical field especially relates to a full -enclosed type LCD projection light machine module and projector. BACKGROUND

[0002] LCD projection technology is a kind of industrialization degree very high projection technology. With the development of technology, we find that higher power light source can bring higher brightness, and also put forward higher heat dissipation requirement to LCD. Specifically, the heat on the LCD needs to be well controlled to improve the light efficiency and service life of LCD projector, but in the prior art, the blower is usually used to dissipate heat for the LCD, and the operation of the blower will also generate a large amount of heat, and will bring the dust in the air into the LCD, affecting the optical efficiency, so the LCD is difficult to get good heat dissipation, resulting in the service life of the LCD being limited.

[0003] Therefore, we specifically design a full -enclosed type LCD projection light machine module and projector with better heat dissipation efficiency and longer service life of LCD. SUMMARY

[0004] The utility model discloses a full -enclosed type LCD projection light machine module and projector, solve the problem that LCD cannot get good heat dissipation, lead to the service life of LCD projector being limited.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] A full -enclosed type LCD projection light machine module and projector, comprising:

[0007] Light machine part, the light machine part includes first shell, second shell and LCD assembly, and the first shell and the second shell are fixedly connected to form an inner cavity, the LCD assembly is installed between the first shell and the second shell, the LCD assembly is fixedly connected between the first shell and the second shell, a micro water pump is arranged in the LCD assembly, a driving motor is connected to the position corresponding to the micro water pump outside the LCD assembly, and the micro water pump and the driving motor are non-rigidly connected through a magnetic coupling.

[0008] Heat dissipation part, the heat dissipation part includes LCD assembly radiator, the LCD assembly radiator is arranged on the outside of the light machine part, the LCD assembly radiator is fixedly connected between the first shell and the second shell, a cooling liquid box is formed between the LCD assembly radiator and the LCD assembly, at least a part of the cooling liquid box is located in the LCD assembly, and at least another part is located in the LCD assembly radiator, and cooling liquid is arranged in the cooling liquid box.

[0009] Optionally, the optical machine part further comprises an imaging Fresnel lens and an illuminating Fresnel lens, the imaging Fresnel lens and the illuminating Fresnel lens are fixed on two sides of the LCD assembly respectively, a reflecting cup is installed on the other side of the illuminating Fresnel lens, a light source copper substrate and an LED lamp bead are installed on the side of the reflecting cup away from the illuminating Fresnel lens, the reflecting cup is fixedly connected with the light source copper substrate and the LED lamp bead, and two light source heat sinks are connected to the light source copper substrate in a mechanical fixing mode, and the two light source heat sinks are installed on two sides of the light source copper substrate respectively.

[0010] Optionally, the reflective mirror and the lens are further included, the reflective mirror is installed on the side wall of the inner cavity, and the lens is installed in the inner cavity and corresponds to the reflective mirror, and a total reflection film is coated on the reflective mirror.

[0011] Optionally, the LCD assembly comprises an LCD, heat insulation glass and an LCD assembly support, and the LCD and the heat insulation glass are installed on the LCD assembly support.

[0012] Optionally, the heat dissipation part further comprises a blower, the blower is installed at the bottom of the second shell, and a wind channel baffle is arranged at the air outlet of the blower.

[0013] Optionally, the connecting position between the first shell and the second shell is filled with sealing foam, the connecting position between the LCD assembly and the first shell and the second shell is filled with sealing foam, the connecting position between the reflecting cup and the light source copper substrate and the LED lamp bead is connected through sealing silica gel, and the connecting position between the light source copper substrate and the two light source heat sinks is filled with heat-conducting silica grease.

[0014] Optionally, the air outlet line of the blower passes through the two light source heat sinks through the blocking of the wind channel baffle.

[0015] A projector comprises a projector shell and a fully-closed LCD projection optical machine module as described above, a shell cover is arranged at the top of the projector shell, a first air hole and a second air hole are respectively arranged on a first side and a second side of the projector shell, a third air hole is arranged on a third side adjacent to the first side and the second side, a lens hole is arranged on a fourth side opposite to the third side, the first shell and the second shell are installed in the interior of the projector shell, and the lens is arranged in the lens hole.

[0016] Compared with the prior art, the projector has the following beneficial effects:

[0017] The driving motor power of the full-enclosed LCD projection light machine module and the projector is transmitted to the micro water pump through the magnetic coupling, the micro water pump promotes the flow of the cooling liquid in the inner cavity, realizes the circulation of the cooling liquid in the cooling liquid box, takes away the heat on the LCD, the driving motor and the micro water pump adopt non-rigid connection, a perforation for the driving shaft to pass through is not needed, the light-transmitting side of the LCD assembly is isolated from dust, the design increases the heat export efficiency of the LCD assembly, meanwhile, the entry of dust is avoided, the connection between the LCD assembly, the first shell and the second shell, and the connections of the light machine part are all filled with sealing foam to avoid the entry of dust, the heat dissipation efficiency is improved, and dust is isolated, and good dustproof effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0019] The structure, proportion, size and the like shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and are not used to limit the implementation conditions of the present application, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose of the present application, should still fall within the scope of the technical content disclosed by the present application.

[0020] Figure 1 is a schematic diagram of the side cross-sectional structure of the whole of the present application;

[0021] Figure 2 is a schematic diagram of the three-dimensional structure of the whole of the present application;

[0022] Figure 3 is a schematic diagram of the route of the air blower air path of the present application;

[0023] Figure 4 is a schematic diagram of the route of the lens light path of the present application;

[0024] Figure 5 is a schematic diagram of the three-dimensional structure of the projector shell of the present application;

[0025] Figure 6 is an exploded view of the internal structure of the projector of the present application.

[0026] Illustrations: 11. First housing; 12. Second housing; 13. LCD assembly; 131. LCD; 132. Heat-insulating glass; 133. LCD assembly bracket; 14. Miniature water pump; 15. Drive motor; 16. LCD assembly heat sink; 17. Coolant tank; 21. Reflector; 22. Imaging Fresnel lens; 23. Illumination Fresnel lens; 24. Light source copper substrate; 25. LED beads; 26. Light source heat sink; 27. Reflector; 28. Lens; 29. ​​Blower; 31. Projector housing; 32. First vent; 33. Housing cover; 34. Lens hole; 35. Second vent; 36. Third vent. Detailed Implementation

[0027] To make the invention's objectives, features, and advantages more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0029] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] This utility model embodiment provides a fully enclosed LCD projection optical engine module and projector.

[0031] like Figures 1 to 6 As shown, Figure 1 This is a side sectional view of the overall structure of this utility model. Figure 2 This is a three-dimensional structural diagram of the entire utility model. Figure 3 This is a schematic diagram of the airflow path of the blower in this utility model. Figure 4 This is a schematic diagram of the optical path of the lens of this utility model. Figure 5 This is a three-dimensional structural diagram of the projector housing of this utility model. Figure 6It is the explosion view of the internal structure of the projector.

[0032] Embodiment one:

[0033] The full-closed LCD projection light machine module provided in the embodiment is applied to a projector, can realize better heat dissipation of the LCD, prolong the service life of the LCD, can reduce the overall opening, thereby avoiding the dust from being brought into the LCD, preventing the dust from being deposited on the surface of the LCD screen and from entering the internal light path of the light machine, and prolonging the service life of the LCD projection light machine.

[0034] As shown in the figure, Figures 1 to 6 The full-closed LCD projection light machine module in the embodiment includes a light machine part, the light machine part includes a first shell 11, a second shell 12 and an LCD assembly 13, the first shell 11 and the second shell 12 are fixedly connected to form an inner cavity, the LCD assembly 13 is installed between the first shell 11 and the second shell 12, the LCD assembly 13 is fixedly connected with the first shell 11 and the second shell 12, a micro water pump 14 is arranged inside the LCD assembly 13, a driving motor 15 is connected to a position outside the LCD assembly 13 corresponding to the micro water pump 14, the micro water pump 14 and the driving motor 15 are non-rigidly connected through a magnetic coupling, a heat dissipation part includes an LCD assembly radiator 16, the LCD assembly radiator 16 is arranged on one side of the LCD assembly 13, the LCD assembly radiator 16 is filled with sealing foam at the connection with the first shell 11 and the second shell 12, a cooling liquid box 17 is formed between the LCD assembly radiator 16 and the LCD assembly 13, at least a part of the cooling liquid box 17 is located in the LCD assembly 13, and at least another part of the cooling liquid box 17 is located in the LCD assembly radiator 16, and the cooling liquid box 17 is internally provided with cooling liquid.

[0035] Specifically, as shown in the figure, Figures 1 to 6 The cooling liquid is sealed by the LCD assembly 13 and the LCD assembly radiator 16, the driving motor 15 and the micro water pump 14 are non-rigidly connected, the power output shaft of the driving motor 15 is connected with the power output shaft of the micro water pump 14 through the magnetic coupling, when the power output shaft of the driving motor 15 rotates, the magnetic field is used to transmit the torque, so as to drive the power output shaft of the micro water pump 14 to rotate, under the action of the driving motor 15, the cooling liquid in the cooling liquid box 17 is circulated, so as to take away the heat in the LCD assembly 13, the driving motor 15 and the micro water pump 14 are non-rigidly connected, no perforation is needed for the driving shaft to pass through, the one side of the LCD assembly 13 is isolated from the dust, the design increases the heat dissipation efficiency of the LCD assembly 13, and simultaneously avoids the entry of the dust, meanwhile, the first shell 11 and the second shell 12 are fixedly connected, and the LCD assembly 13 is fixedly connected with the first shell 11 and the second shell 12, so as to avoid the entry of the dust and play a certain dustproof role.

[0036] Therefore, the fully-enclosed LCD projection light engine module in the embodiment can drive the power output shaft of the micro water pump 14 to rotate through the magnetic field torque transmission when the power output shaft of the driving motor 15 rotates, thereby driving the cooling liquid in the cooling liquid box 17 to circulate and further taking away the heat on the LCD assembly 13, so that the LCD assembly 13 has better heat dissipation effect, and the one side of the LCD assembly 13 is isolated from dust, thereby achieving a certain dustproof effect. Meanwhile, the first shell 11 and the second shell 12 are fixedly connected, and the LCD assembly 13 is fixedly connected between the first shell 11 and the second shell 12, thereby achieving good dustproof effect.

[0037] Further, as shown in Figures 1 to 4 the light engine part further includes an imaging Fresnel lens 22 and an illumination Fresnel lens 23, the imaging Fresnel lens 22 and the illumination Fresnel lens 23 are respectively fixed on the two sides of the LCD assembly 13, the other side of the illumination Fresnel lens 23 is connected with a reflecting cup 21, the reflecting cup 21 is installed with a light source copper substrate 24 and an LED lamp bead 25 away from the other side of the illumination Fresnel lens 23, the reflecting cup 21 is fixedly connected with the light source copper substrate 24 and the LED lamp bead 25, and the light source copper substrate 24 is connected with two light source heat sinks 26 in a mechanical fixed manner, and the two light source heat sinks 26 are respectively installed on the two sides of the bottom of the first shell 11.

[0038] Specifically, as shown in Figures 1 to 4 the light source copper substrate 24 and the LED lamp bead 25 form a light source, the reflecting cup 21, the light source copper substrate 24, the LED lamp bead 25, the illumination Fresnel lens 23 and the imaging Fresnel lens 22 are installed in the inner cavity formed by the fixed connection of the first shell 11 and the second shell 12, and are sealed by the first shell 11 and the second shell 12, the reflecting cup 21 is fixedly connected with the light source copper substrate 24 and the LED lamp bead 25, thereby avoiding the dust in the light path part, and achieving good dustproof effect.

[0039] Further, as shown in Figure 1 the reflecting mirror 27 is installed on the side wall of the inner cavity, the lens 28 is installed in the inner cavity and corresponds to the reflecting mirror 27, and the reflecting mirror 27 is coated with a total reflection film.

[0040] Specifically, the light path is folded by the reflecting mirror 27, is emitted through the lens 28, and projects a picture, the central axis of the LCD assembly 13 and the lens 28 can not be parallel, the structure is compact, and the volume of the light engine is further reduced, the reflecting mirror 27 is coated with a total reflection film, the reflectivity can be increased, and the utilization efficiency of light can be improved.

[0041] Further, the LCD assembly 13 comprises an LCD 131, heat insulation glass 132 and an LCD assembly support 133, the LCD 131 and the heat insulation glass 132 are installed on the LCD assembly support 133.

[0042] Specifically, the LCD 131 is installed on the LCD assembly support 133, and the heat generated by the LCD 131 can be taken away by the cooling liquid in the LCD assembly 13, so that the LCD 131 can be well cooled.

[0043] Further, as shown in Figures 2 to 3 the heat dissipation part further comprises a blower 29, the blower 29 is installed at the bottom of the second shell 12, and a wind channel baffle 30 is arranged at the air outlet of the blower 29, and the air outlet line of the blower 29 passes through the wind channel baffle 30 and then passes through the two light source heat sinks 26.

[0044] Specifically, as shown in Figures 2 to 3 the air inlet direction of the blower 29 is parallel to the LCD assembly 13, and the air outlet direction is perpendicular to the light source copper substrate 24. Under the action of the blower 29, the cold air flows into the air duct of the blower 29 from the LCD assembly heat sink 16 and takes away the heat conducted to the LCD assembly heat sink 16 by the cooling liquid, and at the same time, the air in other directions also flows into the air duct of the blower 29, and the wind channel baffle 30 forces the air flowing out of the blower 29 to pass through the light source heat sink 26, thereby taking away the heat on the light source heat sink 26, so that the LCD 131 and the light source can be better cooled.

[0045] Further, the connection between the first shell 11 and the second shell 12 is filled with sealing foam, the connection between the LCD assembly 13 and the first shell 11 and the second shell 12 is filled with sealing foam, the connection between the light reflecting cup 21 and the light source copper substrate 24 and the LED lamp bead 25 is connected by sealing silica gel, and the connection between the light source copper substrate 24 and the two light source heat sinks 26 is filled with heat-conducting silica gel.

[0046] Specifically, the connection between the first shell 11, the second shell 12 and the LCD assembly 13 is filled with sealing foam, the connection between the light reflecting cup 21 and the light source is filled with sealing silica gel, the connection between the light source copper substrate 24 and the two light source heat sinks 26 is filled with heat-conducting silica gel, so as to ensure that no dust enters the light path part and achieve good dustproof effect.

[0047] In order to facilitate the understanding of those skilled in the art, the overall working process of the fully enclosed LCD projection light machine module will be explained as follows:

[0048] The light emitted by the light source passes through the reflector cup 21, and under the uniform light and beam expansion of the reflector cup 21, the light is further focused by the illumination Fresnel lens 23, the LCD assembly 13, the imaging Fresnel lens 22, the light brightness is improved, and then the light path is folded by the mirror 27, and the picture is projected by the lens 28. In this process, the light emitted by the light source will continuously generate heat, and the light adjustment of the LCD 131 will also generate a large amount of heat. Based on this, the LCD assembly radiator 16, the driving motor 15 and the micro water pump 14 are connected in a non-rigid manner. The power output shaft of the driving motor 15 is connected with the power output shaft of the micro water pump 14 through a magnetic coupling. When the power output shaft of the driving motor 15 rotates, the torque is transmitted by the magnetic field to drive the power output shaft of the micro water pump 14 to rotate. Under the action of the driving motor 15, the cooling liquid in the cooling liquid box 17 circulates to carry away the heat on the LCD 131; the driving motor 15 and the micro water pump 14 are connected in a non-rigid manner, and a perforation for the driving shaft to pass through is not needed, which ensures that one side of the LCD 131 is isolated from dust.

[0049] Then, under the action of the air blower 29, the cold air flows from the LCD assembly radiator 16 into the air duct of the air blower 29 and carries away the heat conducted to the LCD assembly radiator 16 by the cooling liquid circulation. At the same time, the air in other directions also flows into the air duct of the air blower 29, and the air duct baffle 30 forces the air flowing out of the air blower 29 to pass through the light source radiator 26, thereby carrying away the heat on the light source radiator 26, so that the LCD 131 and the light source are better cooled.

[0050] In addition, the place where the first shell 11, the second shell 12 and the LCD assembly 13 meet is filled with sealing foam, the place where the reflector cup 21 and the light source meet is filled with sealing silica gel, and the connection between the light source copper substrate 24 and the two light source radiators 26 is filled with heat-conducting silicone grease, which constitutes a sealing measure for the light path, so that no dust enters the light path part.

[0051] In summary, the fully enclosed LCD projection light machine module in the embodiment has better cooling efficiency, so that dust cannot deposit on the surface of the LCD and cannot enter the light path inside the light machine, and the service life of the LCD projection light machine is prolonged.

[0052] Example two:

[0053] The embodiment provides a projector, which specifically comprises a projector shell 31 and a fully-enclosed LCD projection light machine module as described above, the top of the projector shell 31 is provided with a shell cover 33, the first side and the second side of the projector shell 31 are respectively provided with a first air hole 32 and a second air hole 35, the third side adjacent to the first side and the second side is provided with a third air hole 36, the fourth side opposite to the third side is provided with a lens hole 34, the first shell 11 and the second shell 12 are installed in the interior of the projector shell 31, and the lens 28 is arranged in the lens hole 34. The embodiment one describes the specific structure and technical effects of the fully-enclosed LCD projection light machine module, and the projector in the embodiment adopts the structure and has the technical effects.

[0054] It should be noted that, in the application, the driving motor 15 and the micro water pump 14 are connected in a non-rigid mode, and a through hole for the driving shaft to pass through is not needed, so that one side of the LCD 131 is isolated from dust, and the LCD 131 becomes the first sealing and dustproof measure of the application, the joint between the first shell 11, the second shell 12 and the LCD assembly 13 is filled with sealing foam, and the joint between the reflecting cup 21 and the light source is filled with sealing silica gel, so that the light path part is ensured to be free of dust, and the LCD projection light machine becomes the second sealing and dustproof measure, the two sealing measures ensure that dust cannot deposit on the surface of the LCD 131 and cannot enter the light path in the interior of the light machine, the service life of the LCD projection light machine is prolonged, and meanwhile, the mirror 27 is coated with a total reflection film, the volume of the projector is greatly reduced through the super folding of the total reflection mirror 27.

[0055] In conclusion, the projector in the embodiment has the advantages that the heat dissipation efficiency is better, dust cannot deposit on the surface of the LCD and cannot enter the light path in the interior of the light machine, and the service life of the LCD projection light machine is prolonged.

[0056] The above, the above embodiment is only used to illustrate the technical scheme of the present application, and is not limited to it; although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical scheme recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the spirit and scope of the technical scheme of the embodiments of the present application.

Claims

1. A totally enclosed LCD projection engine module, characterized in that, It includes: Optical machine part, the optical machine part includes first shell (11), second shell (12) and LCD assembly (13), the first shell (11) and second shell (12) are fixedly connected to form inner cavity; The LCD assembly (13) is installed between the first shell (11) and the second shell (12), and the LCD assembly (13) is fixedly connected between the first shell (11), the second shell (12), the micro water pump (14) is arranged in the LCD assembly (13), the driving motor (15) is connected to the position corresponding to the micro water pump (14) outside the LCD assembly (13), and the micro water pump (14) and the driving motor (15) are non-rigidly connected through a magnetic coupling. The heat dissipation part includes an LCD assembly radiator (16), which is arranged outside the optical machine part, and is fixedly connected between the first shell (11) and the second shell (12). The LCD assembly radiator (16) and the LCD assembly (13) form a cooling liquid box (17), at least a part of the cooling liquid box (17) is located in the LCD assembly (13), and at least another part is located in the LCD assembly radiator (16). The cooling liquid box (17) is internally provided with cooling liquid.

2. The totally enclosed LCD projection engine module of claim 1, wherein: The optical machine part further includes an imaging Fresnel lens (22) and an illumination Fresnel lens (23), the imaging Fresnel lens (22) and the illumination Fresnel lens (23) are fixed on both sides of the LCD assembly (13) respectively, the other side of the illumination Fresnel lens (23) is provided with a reflecting cup (21), the reflecting cup (21) is provided with a light source copper substrate (24) and an LED lamp bead (25) away from the illumination Fresnel lens (23), the reflecting cup (21) is fixedly connected between the light source copper substrate (24) and the LED lamp bead (25), and the light source copper substrate (24) is connected with two light source radiators (26) in a mechanical fixed manner. Two light source radiators (26) are installed on both sides of the light source copper substrate (24).

3. The totally enclosed LCD projection engine module of claim 2, wherein: The optical machine part further includes a reflecting mirror (27) and a lens (28), the reflecting mirror (27) is installed on the side wall of the inner cavity, the lens (28) is installed in the inner cavity and corresponds to the reflecting mirror (27), and a total reflection film is coated on the reflecting mirror (27).

4. The totally enclosed LCD projection engine module of claim 1, wherein, The LCD assembly (13) includes an LCD (131), heat insulation glass (132) and an LCD assembly support (133), the LCD (131) and the heat insulation glass (132) are installed on the LCD assembly support (133).

5. The totally enclosed LCD projection engine module of claim 1, wherein, The heat dissipation part further includes a blower (29), the blower (29) is installed at the bottom of the second shell (12), and a wind channel baffle (30) is arranged at the air outlet of the blower (29).

6. The totally enclosed LCD projection engine module of claim 2, wherein, The connection between the first shell (11) and the second shell (12) is filled with sealing foam, the connection between the LCD assembly (13) and the first shell (11) and the second shell (12) is filled with sealing foam, the connection between the light cup (21) and the light source copper substrate (24) and the LED lamp bead (25) is connected through sealing silica gel, and the connection between the light source copper substrate (24) and the two light source heat sinks (26) is filled with heat-conducting silicone grease.

7. The totally enclosed LCD projection engine module of claim 5, wherein: The air outlet line of the air blower (29) passes through the two light source heat sinks (26) by being blocked by the air duct baffle (30).

8. A projector characterized by comprising: The projector shell (31) and the fully-closed LCD projection light machine module as claimed in any one of claims 1-7, The top of the projector shell (31) is provided with a shell cover (33), the first side and the second side of the projector shell (31) are respectively provided with a first air hole (32) and a second air hole (35), the third side adjacent to the first side and the second side is provided with a third air hole (36), and the fourth side opposite to the third side is provided with a lens hole (34). The first shell (11) and the second shell (12) of the fully-closed LCD projection light machine module are installed in the interior of the projector shell (31), and the lens (28) is arranged in the lens hole (34).

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