3LCD projection ray machine convenient to maintain

Abstract

The utility model relates to a three-liquid crystal display (LCD) projection ray machine, in particular to a three-liquid crystal display (LCD) projection ray machine which is convenient to maintain. The utility model discloses a 3LCD projection ray machine convenient to maintain. The 3LCD projection ray machine comprises an adjustable shell assembly and a built-in assembly arranged in the adjustable shell assembly, the adjustable shell assembly comprises a bottom shell, a guide groove, a limiting sealing plate, a telescopic shell cover assembly, a placement hole and a keyboard; the built-in assembly comprises a retractable lens, a transmission assembly, a light source assembly and a controller. The utility model aims to provide the 3LCD projection ray machine which is simple and convenient to disassemble and assemble and convenient to maintain.

Description

Technical Field

[0001] The utility model relates to a 3LCD projection light machine, in particular to a 3LCD projection light machine which is convenient to maintain. Background Art

[0002] 3LCD projector usually refers to an LCD (liquid crystal display) projector that contains three independent LCD glass panels, one for the red, green, and blue components of the video signal. Each LCD panel contains tens of thousands (or even millions) of liquid crystals that can be configured to open, closed, or partially closed positions to allow light to pass through. Each individual liquid crystal essentially acts like a shutter or blind, representing a single pixel ("picture element"). When the red, green, and blue colors pass through different LCD panels, the liquid crystals open or close instantly based on how much of each color is needed for that pixel at that moment. By modulating the light during the working process, an image projected onto the screen is produced.

[0003] The existing 3LCD projector housings are mostly fixed with screws, which makes disassembly and maintenance difficult, time-consuming and labor-intensive. The rare housings that are fixed by snap-fitting also have a complicated disassembly and assembly process, which also makes maintenance and repair of the 3LCD projector itself difficult. Utility Model Content

[0004] In view of this, the present invention provides a 3LCD projection light engine that is easy to maintain. The purpose is to provide a 3LCD projection light engine that is easy to disassemble and assemble and convenient to maintain.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A 3LCD projection optical engine with convenient maintenance comprises an adjustable housing assembly and a built-in assembly arranged in the adjustable housing assembly; the adjustable housing assembly comprises a bottom shell, a guide groove, a limit sealing plate, a telescopic shell cover assembly, a placement hole and a keypad, the bottom shell is a semi-enclosed structure, the guide grooves are correspondingly provided on two relatively parallel sides of the top of the bottom shell, the limit sealing plate and the telescopic shell cover assembly are respectively provided at both ends of the guide groove, one end of the telescopic shell cover assembly is fixedly connected to the top of the bottom shell, and the other end is slidably connected to the guide groove through a guide block, the placement hole is opened on one side of the bottom shell, and the keypad is provided on the bottom shell adjacent to the placement hole; the built-in assembly comprises a retractable lens, a transmission assembly, a light source assembly and a controller, the retractable lens is arranged in the placement hole, the transmission assembly is correspondingly arranged on the rear side of the retractable lens, the light source assembly and the controller are arranged in the bottom shell, and the retractable lens, the transmission assembly and the light source assembly are respectively electrically connected to the controller.

[0007] The top end of the bidirectional screw rod is connected with the support plate on the right side of the base, and the bottom end of the bidirectional screw rod is connected with the support plate on the right side of the base.

[0008] Preferably, a plurality of clamping blocks are further provided on the connection side between the telescopic shell cover assembly and the guide block; a first clamping slot and a second clamping slot are respectively provided on the limiting sealing plate corresponding to the guide block and the clamping block, and an electromagnetic suction cup is provided in the first clamping slot corresponding to the guide block, and the electromagnetic suction cup is electrically connected to the controller.

[0009] Preferably, a plurality of heat dissipation holes are evenly arranged on the rear side of the bottom shell.

[0010] Preferably, the controller is electrically connected to the keyboard.

[0011] Preferably, bumps are correspondingly provided at the four corners of the bottom of the bottom shell.

[0012] Preferably, a pulling groove is correspondingly provided on the top of the guide block, and the guide block is made of ferromagnetic material.

[0013] Preferably, the telescopic folding plate is made of flexible anti-collision material.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model includes an adjustable shell component and a built-in component arranged in the adjustable shell component. The setting of the adjustable shell component allows the staff to perform maintenance and repair of the 3LCD projector light machine in a simple and convenient manner. The setting of the built-in component enables the 3LCD projector light machine to complete its main functions. Generally speaking, the adjustable shell component can be adjusted under the control of the controller to complete the maintenance and repair of the 3LCD projector light machine, and the normal operation of the built-in component can be controlled to enable the 3LCD projector light machine to perform its functions normally. Compared with the traditional 3LCD projector light machine, the maintenance and repair of this 3LCD projector light machine is more convenient, the operation process is simpler, the single maintenance and repair takes less time and is more efficient; the bottom shell is a semi-enclosed structure, and the setting of the semi-enclosed structure is conducive to the installation and maintenance of the internal components of the 3LCD projector light machine, and the top of the bottom shell is provided with guide grooves on both relatively parallel sides. The guide grooves are used to guide the sliding of the guide block, thereby facilitating the adjustment of the telescopic shell cover assembly, and the two ends of the guide grooves are respectively A limiting sealing plate and a telescopic shell cover assembly are provided. The limiting sealing plate is used to clamp and seal the telescopic shell cover assembly so that the entire device shell is in a closed state. One end of the telescopic shell cover assembly is fixedly connected to the top of the bottom shell, and the other end is slidably connected to the guide groove through a guide block. This setting can drive the telescopic shell cover assembly to be extended and extended by the guide block to adjust the adjustable shell assembly. The guide block and the clamping block are respectively engaged with the first clamping groove and the second clamping groove on the limiting sealing plate to perform limiting and fixing, so that this 3LCD projection light machine can work normally; a placement hole is opened on one side of the bottom shell, and a keypad is provided adjacent to the placement hole on the bottom shell, wherein the placement hole is provided to provide space conditions for placing the retractable lens, and the keypad is provided to facilitate the normal use of adjusting the entire 3LCD projection light machine; the built-in component is provided with a combination of the retractable lens, the transmission assembly, the light source assembly and the controller, and the retractable lens, the transmission assembly and the light source assembly can be controlled by the controller to be used in combination so that this 3LCD projection light machine can complete its function normally.

[0016] The two levers are connected by an L-shaped guide rod, which is adapted to move the lever back and forth, so that the lever can be moved in a direction of rotation relative to the first lever, thereby facilitating the movement of the lever back and forth, thereby facilitating the movement of the lever back and forth, and thus facilitating the movement of the lever back and forth, thereby facilitating the movement of the lever back and forth, and thus facilitating the movement of the lever back and forth, and thus facilitating the movement of the lever back and forth,

[0017] 3. The telescopic shell cover assembly of the utility model is further provided with a plurality of clamping blocks on the connection side with the guide block, and the limiting sealing plate is respectively provided with a first clamping slot and a second clamping slot corresponding to the guide block and the clamping block, and an electromagnetic suction cup is provided in the first clamping slot corresponding to the guide block, and the electromagnetic suction cup is electrically connected to the controller. This setting can respectively engage and connect the guide block and the clamping block with the first clamping slot and the second clamping slot, and at the same time, complete the guiding adsorption of the guide block through the electromagnetic suction cup, and limit the sealing of the adjustable shell, so that the entire shell of the 3LCD projector is installed and sealed. Compared with the traditional disassembly and assembly process, this operation process is simpler, simplifies the disassembly and assembly process of the shell of the 3LCD projector, and thus facilitates the maintenance and repair of the 3LCD projector.

[0018] 4. The rear side of the bottom shell of the present invention is evenly provided with heat dissipation holes, which are conducive to heat dissipation and cooling of the entire 3LCD projector during use.

[0019] 5. The controller of the utility model is electrically connected to the keyboard. This setting can make the 3LCD projection light machine quickly adjustable and disassembled through the combined control of the controller and the keyboard.

[0020] 6. The four corners of the bottom of the bottom shell of the present invention are also provided with support blocks. The setting of the support blocks can provide effective support for the 3LCD projector while also reducing the wear of the bottom of the bottom shell.

[0021] 7. A pulling groove is provided on the top of the guide block of the utility model. The pulling groove facilitates the staff to use fingers or other suitable tools to pull the two guide blocks at the same time to assist the two guide blocks to slide smoothly and steadily. The guide blocks are made of ferromagnetic material, which facilitates the adsorption of the guide blocks by the electromagnetic suction cup.

[0022] 8. The telescopic folding plate of the utility model is made of flexible anti-collision material. This setting can make the telescopic folding plate able to retract normally so that the staff can maintain and repair the 3LCD projector. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the telescopic shell cover assembly of the utility model when it is folded;

[0024] Figure 2 This is a front view structural diagram of the telescopic shell cover assembly of the utility model when it is folded;

[0025] Figure 3 This is a rear view structural diagram of the telescopic cover assembly of the utility model when it is folded;

[0026] Figure 4 This is a schematic diagram of the installation structure of the telescopic shell cover assembly of the utility model;

[0027] Figure 5 This is a schematic diagram of the installation structure of the telescopic connecting rod of the utility model;

[0028] Figure 6 This is a structural diagram of the limit sealing plate of the utility model;

[0029] Figure 7 This is a structural diagram of the guide groove of the utility model.

[0030] Figure markings: 1: adjustable shell assembly, 2: built-in assembly, 3: bottom shell, 4: guide groove, 5: limit sealing plate, 6: telescopic shell cover assembly, 7: placement hole, 8: keyboard, 9: guide block, 10: retractable lens, 11: transmission assembly, 12: light source assembly, 13: controller, 14: telescopic folding plate, 15: support block, 16: compression spring, 17: telescopic connecting rod, 18: first rotating connection, 19: slot, 20: second rotating connection, 21: L-shaped guide rod, 22: limit adjustment block, 23: limit adjustment slot, 24: bidirectional screw rod, 25: knob, 26: support plate, 27: block, 28: first slot, 29: second slot, 30: electromagnetic suction cup, 31: heat dissipation hole, 32: bump, 33: pulling slot. DETAILED DESCRIPTION

[0031] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0034] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7As shown, it includes an adjustable housing component 1 and a built-in component 2 arranged in the adjustable housing component 1. The setting of the adjustable housing component 1 allows the staff to perform maintenance and repairs on the 3LCD projection light machine in a simple and convenient manner. The setting of the built-in component 2 enables the 3LCD projection light machine to complete its main functions. In general, the adjustable housing component 1 can be adjusted under the control of the controller 13 to complete the maintenance and repair of the 3LCD projection light machine, and the built-in component 2 can be controlled to operate normally so that the 3LCD projection light machine can normally perform its functions. Compared with the traditional 3LCD projection light machine , the maintenance and overhaul of this 3LCD projection optical machine is more convenient, the operation process is simpler, the single maintenance and overhaul takes less time and is more efficient; the bottom shell 3 is a semi-enclosed structure, and the setting of the semi-enclosed structure is conducive to the installation and maintenance of the internal components of the 3LCD projection optical machine, and the top of the bottom shell 3 is provided with guide grooves 4 on both relatively parallel sides, and the guide grooves 4 are used to guide the sliding of the guide block 9, thereby facilitating the adjustment of the telescopic shell cover assembly 6, and the two ends of the guide groove 4 are respectively provided with a limit sealing plate 5 and the telescopic shell cover assembly 6, and the limit sealing plate 5 is used to clamp and seal the telescopic shell cover assembly 6 The entire device housing is sealed so that one end of the telescopic shell cover assembly 6 is fixedly connected to the top of the bottom shell 3, and the other end is slidably connected to the guide groove 4 through the guide block 9. This setting can drive the telescopic shell cover assembly 6 to be extended and extended by the guide block 9 so that the adjustable shell assembly 1 can be adjusted. The guide block 9 and the card block 27 are respectively engaged with the first card groove 28 and the second card groove 29 on the limit sealing plate 5 to limit and fix, so that this 3LCD projection light machine can work normally; a placement hole 7 is opened on one side of the bottom shell 3, and a keypad 8 is provided adjacent to the placement hole 7 on the bottom shell 3, wherein the placement hole 7 is The setting provides space conditions for placing the retractable lens 10, and the setting of the keyboard 8 provides convenience for adjusting the normal use of the entire 3LCD projector; the built-in component 2 includes the retractable lens 10, the transmission component 11, the light source component 12 and the controller 13. The built-in component 2 all adopts conventional components of the 3LCD projector in the prior art, which will not be described in detail here. The retractable lens 10 is set in the placement hole 7, the transmission component 11 is correspondingly set on the rear side of the retractable lens 10, the light source component 12 and the controller 13 are set in the bottom shell 3, and the controller 13 can adopt a small controller PNOZmult i2 model controller 13. This controller 13 is applicable to commonly used communication networks and can also connect, control and monitor multiple components at the same time. The retractable lens 10, the transmission component 11 and the light source component 12 are respectively electrically connected to the controller 13. This setting can be used in combination with the controller 13 to control the retractable lens 10, the transmission component 11 and the light source component 12 respectively, so that the 3LCD projector can complete its function normally.

[0035] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the telescopic shell cover assembly 6 includes a plurality of telescopic folding plates 14, and the bottoms of the front and rear sides of the plurality of telescopic folding plates 14 are respectively provided with support blocks 15, and compression springs 16 are respectively provided between two adjacent support blocks 15 (located on the same left and right horizontal lines), and two groups of telescopic connecting rods 17 are symmetrically provided below the front and rear sides of the plurality of telescopic folding plates 14, and each group of telescopic connecting rods 17 is slidably provided in the slots 19 on the corresponding guide grooves 4 through the plurality of first rotating connecting members 18 thereon (the length of the first rotating connecting member 18 is greater than the width of the guide groove 4), and the two groups of telescopic connecting rods 17 are symmetrically provided below the front and rear sides of the plurality of telescopic folding plates 14, and the two groups of telescopic connecting rods 17 are symmetrically provided in the slots 19 on the corresponding guide grooves 4 through the plurality of first rotating connecting members 18 thereon (the length of the first rotating connecting member 18 is greater than the width of the guide groove 4), and the two groups of telescopic connecting rods 17 are symmetrically provided The second rotating connection member 20 at the left end of the connecting rod 17 (the length of the second rotating connection member 20 is less than the width of the guide groove 4) is connected in sequence with the guide block 9 and the support block 15 located on the leftmost side through the L-shaped guide rod 21 (the guide block 9 and the support block 15 here refer to the guide block 9 and the support block 15 located on the corresponding side of the telescopic connecting rod 17). The second rotating connection member 20 is rotatably connected to one end of the L-shaped guide rod 21. Two L-shaped guide rods 21 can be provided and are provided on the front and rear end surfaces of the second rotating connection member 20. The right end portion of each group of telescopic connecting rods 17 is symmetrically rotated in an up and down manner. There are two limit adjustment blocks 22, the right ends of the two limit adjustment blocks 22 are slidably set in the corresponding limit adjustment grooves 23, and the two limit adjustment blocks 22 are respectively correspondingly threaded on the upper and lower sides of the bidirectional screw rod 24. The top of the bidirectional screw rod 24 extends upward to the outside of the bottom shell 3 and is connected to a knob 25. The bottom end of the bidirectional screw rod 24 is rotatably connected to the support plate 26 on the right inner wall of the bottom shell 3. This setting can be driven by simultaneously rotating the two knobs 25 forward (reverse) to drive the corresponding bidirectional screw rod 24 forward (reverse), thereby making the corresponding two limit adjustment blocks 22 in the corresponding limit Under the action of the sliding limit of the adjustment groove 23, they slide up and down relative to each other (towards each other), so that the two sets of telescopic connecting rods 17 are compressed up and down (extended up and down) and extended left and right (compressed left and right) at the same time, and then the L-shaped guide rod 21 on the corresponding side can synchronously push (pull) the guide block 9 to move, and can synchronously drive the support block 15 and the multiple telescopic folding plates 14 above the support block 15 to stretch (fold), thereby completing the adjustment of the telescopic shell cover assembly 6. The operation process is simple, which simplifies the disassembly and assembly process of the 3LCD projector optical machine shell, thereby facilitating the maintenance and repair of the 3LCD projector optical machine.

[0036] like Figure 1 and Figure 6As shown, a plurality of blocks 27 are further provided on the connection side of the telescopic shell cover assembly 6 and the guide block 9. A first card slot 28 and a second card slot 29 are respectively provided on the limit sealing plate 5 corresponding to the guide block 9 and the card slot 27. An electromagnetic suction cup 30 is provided in the first card slot 28 corresponding to the guide block 9. The electromagnetic suction cup 30 is electrically connected to the controller 13. The electromagnetic suction cup 30 can adopt the H1212-24B580 circular suction cup electromagnet produced by Zhongshan Landa Technology Co., Ltd. The electromagnetic suction cup 30 uses the electromagnetic principle to energize its internal coil. Generate magnetic force to complete the adsorption of the magnetic conductive component. This setting can respectively engage and connect the guide block 9 and the card block 27 with the first card slot 28 and the second card slot 29. At the same time, the guide adsorption of the guide block 9 is completed by the electromagnetic suction cup 30, and the adjustable shell can be limited and sealed, so that the entire shell of this 3LCD projector is installed and closed. Compared with the traditional disassembly and assembly process, this operation process is simpler, simplifies the disassembly and assembly process of the 3LCD projector shell, and thus facilitates the maintenance and repair of this 3LCD projector.

[0037] like Figure 3 As shown, heat dissipation holes 31 are evenly opened on the rear side of the bottom shell 3. The arrangement of the heat dissipation holes 31 is conducive to heat dissipation and cooling of the entire 3LCD projector during use.

[0038] like Figure 2 As shown, the controller 13 is electrically connected to the keypad 8. This arrangement enables the 3LCD projection light machine to be quickly adjusted and assembled through the combined control of the controller 13 and the keypad 8.

[0039] like Figure 2 、 Figure 3 and Figure 4 As shown, the four corners of the bottom of the bottom shell 3 are correspondingly provided with protrusions 32 . The setting of the protrusions 32 can provide effective support for the 3LCD projection light engine while also reducing the wear of the bottom of the bottom shell 3 .

[0040] like Figure 1 As shown, a pulling groove 33 is provided on the top of the guide block 9. The pulling groove 33 allows the staff to use their fingers or other suitable tools to pull the two guide blocks 9 at the same time to assist the two guide blocks 9 to slide smoothly and steadily. The guide block 9 is made of ferromagnetic material, which facilitates the adsorption of the guide block 9 by the electromagnetic suction cup 30.

[0041] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the telescopic folding plate 14 is made of a flexible anti-collision material. This setting allows the telescopic folding plate 14 to be normally extended and retracted to facilitate maintenance and repair of the 3LCD projector by the staff.

[0042] The specific operating principle is:

[0043] When the 3LCD projector needs to be maintained and repaired, the 3LCD projector must first be connected to an external power supply. The controller starts the projector by clicking on the keyboard, and the controller controls the electrical components connected to it. The controller then de-energizes the electromagnetic chuck by clicking on the keyboard. The two knobs can be reversed simultaneously to drive the corresponding bidirectional screws to reverse, causing the corresponding two limit adjustment blocks to slide up and down toward each other under the sliding limit of the corresponding limit adjustment slots. This causes the two sets of telescopic links to simultaneously extend up and down and compress left and right. Then, the L-shaped guide rods on the corresponding sides can synchronously pull the guide blocks to move within the guide slots, synchronously driving the support blocks and the multiple telescopic flaps above the support blocks to fold until the two limit adjustment blocks slide to the two ends of the bidirectional screws (at which point the two limit adjustment blocks are respectively limited by the separated ends of the corresponding limit adjustment slots). The telescopic link stops deforming, the guide blocks stop moving, the telescopic flaps are folded, and the built-in components installed in the bottom shell are exposed to the staff's field of vision. The staff can now use maintenance tools to repair the 3LCD projector. Comprehensive maintenance and overhaul; after the maintenance and overhaul is completed, click the keyboard again to energize the electromagnetic suction cup, and by simultaneously rotating the two knobs forward to drive the corresponding bidirectional screw rod to rotate forward, so that the corresponding two limit adjustment blocks slide up and down relative to each other under the sliding limit of the corresponding limit adjustment groove, so that the two sets of telescopic connecting rods are compressed up and down and extended left and right at the same time, and then the L-shaped guide rod on the corresponding side can synchronously push the guide block to move in the guide groove, and can synchronously drive the support block and the multiple telescopic folding plates above the support block to extend, until the two limit adjustment blocks slide to the bidirectional screw rod respectively When the telescopic folding plate is fully extended, the 3LCD projector housing is normally closed and can be used normally. During the above adjustment process, you can also place your fingers or other suitable tools in the pulling groove and pull the two guide blocks at the same time to assist the two guide blocks to slide smoothly and steadily in the guide groove.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A 3LCD projection light engine with easy maintenance, characterized in that: The invention comprises an adjustable shell component and a built-in component arranged in the adjustable shell component; the adjustable shell component comprises a bottom shell, a guide groove, a limit sealing plate, a telescopic shell cover component, a placement hole and a keypad, the bottom shell is a semi-enclosed structure, the guide grooves are correspondingly provided on two relatively parallel sides of the top of the bottom shell, the limit sealing plate and the telescopic shell cover component are respectively provided at both ends of the guide groove, one end of the telescopic shell cover component is fixedly connected to the top of the bottom shell, and the other end is slidably connected to the guide groove through a guide block, the placement hole is opened on one side of the bottom shell, and the keypad is provided on the bottom shell adjacent to the placement hole; The built-in components include a retractable lens, a transmission component, a light source component and a controller. The retractable lens is arranged in the placement hole, the transmission component is correspondingly arranged on the rear side of the retractable lens, the light source component and the controller are arranged in the bottom shell, and the retractable lens, the transmission component and the light source component are electrically connected to the controller respectively.

2. The 3LCD projection light engine with easy maintenance according to claim 1, characterized in that: The two lever arrangement comprises a first end of a shaft, and a second end of a shaft is connected to the bottom link of the two levers via a linking mechanism, the second end of the shaft being connected to the support frame of the second rotatable plate.

3. The 3LCD projection light engine with easy maintenance according to claim 1, characterized in that: A plurality of clamping blocks are further provided on the connection side between the telescopic shell cover assembly and the guide block; a first clamping slot and a second clamping slot are respectively provided on the limiting sealing plate corresponding to the guide block and the clamping block, an electromagnetic suction cup is provided in the first clamping slot corresponding to the guide block, and the electromagnetic suction cup is electrically connected to the controller.

4. The 3LCD projection light engine with easy maintenance according to claim 1, characterized in that: A plurality of heat dissipation holes are evenly arranged on the rear side of the bottom shell.

5. The 3LCD projection light engine with easy maintenance according to claim 1, characterized in that: The controller is electrically connected to the keyboard.

6. The 3LCD projection light engine with easy maintenance according to claim 1, characterized in that: The four corners of the bottom of the bottom shell are correspondingly provided with bumps.

7. The 3LCD projection light engine with easy maintenance according to claim 1, characterized in that: A pulling groove is correspondingly provided on the top of the guide block, and the guide block is made of ferromagnetic material.

8. The 3LCD projection light engine with easy maintenance according to claim 2, characterized in that: The telescopic folding plate is made of flexible anti-collision material.

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