A projector based on color wheel time-sharing display and MONO LCD screen

Abstract

The present invention provides a projector based on color wheel time-sharing display and MONO LCD screen, including a shell assembly, wherein a main body assembly is installed inside the shell assembly; the main body assembly includes a white light source, a condenser lens, a color separation wheel, a shaping lens, a polarizing lens, a monochrome LCD screen, a projection lens, a mounting tube, a through hole and a limit seat; the white light source is installed on the inner rear wall of the mounting tube. The present invention uses white light color separation, and there is only one light source as a whole, instead of R / G / B separate light paths, thereby simplifying the optical system, and by using a white light source and using a color separation wheel for color separation, only part of the polarized light will be projected onto the monochrome LCD screen in a unit time, and the main heat source is at the white light source, not on the monochrome LCD screen, thereby avoiding the LCD heat dissipation bottleneck problem, and compared with the method of adding a large number of heat dissipation mechanisms on the outside in the prior art, it not only solves the problem of LCD screen heat dissipation, but also does not cause the overall volume of the projector to increase.

Description

Technical Field

[0001] The invention relates to an LCD projector, in particular to a projector based on color wheel time-sharing display and a MONO LCD screen, belonging to the technical field of projectors. Background Art

[0002] A monochrome LCD projector is mainly composed of a liquid crystal panel. When the light source emits white light, it first passes through a Fresnel lens to become regular parallel light, and then passes through a polarizer to form polarized light. Next, the light passes through the middle LCD panel and transmits image lights of different colors. These image lights are focused and enhanced by the Fresnel lens, and finally projected through a total reflection mirror to display the projected image.

[0003] The development of single LCD projection has reached a point where the light source can continue to increase in brightness, but the LCD screen cannot support higher temperatures. We are currently working on making the screen more heat-resistant or increasing the heat dissipation of the screen, but bottlenecks are gradually emerging.

[0004] For example, the technology disclosed in CN202322005979.9 "Single LCD projection optical machine and projector" installs the LCD screen through the installation cavity in the shell, and uses the inner circulation channel and the outer circulation channel in the heat exchanger to allow the air in the installation cavity to exchange heat with the outside air. The outside airflow and the airflow in the installation cavity will continuously exchange heat when flowing, so the heat exchange efficiency is higher than that of the profile radiator, and the temperature of the LCD screen can be reduced to a greater extent;

[0005] The addition of a heat dissipation component on the outside improves the heat dissipation effect of the LCD screen, but increases the overall size of the projector, thereby reducing the convenience of the projector and increasing the difficulty of installing the projector.

[0006] Another example is the technology disclosed in CN202122031272.6 "A short-throw single LCD projector high-definition optical path", which forms a projection optical path through structures such as a light source, a light funnel, a collimating lens, a heat shield, an LCD screen, and a focusing lens, and then cooperates with the projection lens to achieve high-definition imaging of the picture. However, one display unit in its LCD screen has three pixels, R / G / B, which means that more grids need to be opened per unit area, and thus its light transmittance and heat dissipation effect still need to be improved;

[0007] Therefore, a projector based on color wheel time-sharing display and MONO LCD screen is proposed. Summary of the invention

[0008] In view of this, the present invention provides a projector based on color wheel time-sharing display and MONO LCD screen to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0009] The technical solution of the embodiment of the present invention is achieved as follows:

[0010] A first aspect: A projector based on a color wheel time-sharing display and a MONO LCD screen, comprising a housing assembly, wherein the housing assembly comprises a projector upper shell and a projector lower shell, wherein a projector assembly is installed inside a chamber formed by the projector upper shell and the projector lower shell: the projector assembly comprises a projector upper cover, a projector main shell and an optical lens assembly;

[0011] The optical lens assembly is installed in a card slot of the projector main housing;

[0012] The projector cover is located on the top of the optical lens assembly and is snap-connected to the top of the projector main housing;

[0013] The optical lens assembly includes a light source module, a collimating lens, a reflector, a color wheel motor, a collimating light cup, a rear Fresnel mirror, a heat-insulating glass, an LCD screen, a front Fresnel mirror, and a lens module;

[0014] A rear Fresnel mirror, a heat-insulating glass, an LCD screen and a front Fresnel mirror are arranged in sequence between the collimating light cup and the lens module; a color wheel motor is arranged at one end of the collimating light cup away from the lens module; a reflector is arranged at one end of the color wheel motor away from the collimating light cup; a reflector and a light source module are respectively arranged at the front and rear ends of the collimating lens; and the light source module and the collimating lens are arranged perpendicular to the color wheel motor.

[0015] Further preferably: the projector assembly further includes a power board assembly, a light source heat dissipation assembly, a main control circuit board, a projector optical path heat sink, a light source heat sink, and a projector internal circulation fan;

[0016] The projector optical path radiator and the projector internal circulation fan are installed on the bottom surface of the projector main housing, the main control circuit board is snap-connected at the top of the projector main housing and at one end away from the lens module, a light source heat dissipation assembly and a light source radiator are sequentially installed on one side of the projector main housing and close to one end of the main control circuit board, and a power board assembly is installed on one side of the projector main housing and close to one end of the lens module.

[0017] Further preferably, the light source heat dissipation assembly includes a light source and a projector heat dissipation fan, and the light source is installed inside the projector heat dissipation fan.

[0018] Further preferably, the color wheel motor is a color wheel motor with R / G / B filters distributed thereon.

[0019] A second aspect: A projector based on a color wheel time-sharing display and a MONO LCD screen, wherein the housing assembly further comprises a shell, an upper cover and a movable seat, and a main assembly is installed inside a chamber formed by the shell and the upper cover;

[0020] The main assembly includes a white light source, a condenser lens, a color separation wheel, a shaping lens, a polarizing lens, a monochrome LCD screen, a projection lens, a mounting tube, a through hole and a limit seat;

[0021] The white light source is installed on the inner rear wall of the mounting tube, the focusing lens, color separation wheel, shaping lens, polarizing lens and monochrome LCD screen are installed on the inner wall of the mounting tube from back to front through the limit seats respectively, the through holes are symmetrically opened on the outer wall of the mounting tube, and the projection lens is attached to the front end of the mounting tube.

[0022] Further preferably: the upper cover is mounted on the upper surface of the housing, the projection lens is mounted inside the housing, and the rear surface of the mounting tube is fixedly connected to the front surface of the movable seat;

[0023] The outer wall of the mounting tube is provided with a heat dissipation assembly, which includes a guide shell, a connecting tube, an air inlet slot, two heat dissipation fans, a dust screen and a fixing tube;

[0024] The guide shell is sleeved on the outer wall of the dustproof net and fixedly connected to the dustproof net, the dustproof net is cylindrical, the connecting pipe is fixedly connected to the outer wall of the guide shell and communicates with the guide shell, the air inlet grooves are equidistantly arranged at the lower part of the outer wall of the guide shell, and the two cooling fans are symmetrically installed on the inner wall of the fixed pipe; the fixed pipe is fixedly connected to the connecting pipe, and the top of the fixed pipe is fixedly connected to the lower surface of the upper cover; the dustproof net is sleeved on the outer wall of the mounting tube, and the dustproof net is fixedly connected to the movable seat; the heat dissipation assembly is located inside the outer shell, and a protective net is fixedly connected to the upper surface of the upper cover, and the position of the protective net corresponds to the position of the fixed pipe.

[0025] Further preferably, a heat dissipation groove is opened on the lower surface of the shell, and the position of the air inlet groove corresponds to the position of the heat dissipation groove; the movable seat is installed on the rear surface of the shell by bolts, and the guide shell is fixedly connected to the movable seat.

[0026] Further preferably: the front end of the projection lens is located at the front part of the shell; a groove that defines the position of the guide shell is opened inside the shell, and the guide shell is slidably connected to the inner wall of the groove; a switch is installed on the front surface of the shell, a data interface is installed on one side of the shell, and a control circuit board is installed inside the shell.

[0027] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0028] First, the present invention uses white light color separation, and there is only one light source as a whole, instead of separate R / G / B light paths, thereby simplifying the optical system and reducing the production cost. Moreover, by using a white light source and a color separation wheel for color separation, only part of the polarized light will be projected onto the monochrome LCD screen in a unit time, and the main heat source is at the white light source, not on the monochrome LCD screen, thereby avoiding the bottleneck problem of LCD heat dissipation. Compared with the method of adding a large number of heat dissipation mechanisms on the outside in the prior art, it not only solves the problem of LCD screen heat dissipation, but also does not increase the overall volume of the projector.

[0029] 2. Compared with the prior art, in the conventional LCD screen in the prior art, one display unit has three pixels of R / G / B, which means that more grids need to be opened per unit area, while in the monochrome LCD screen in the present invention, one display unit has only one pixel, fewer grids per unit area, higher aperture ratio, and better light transmittance and heat dissipation.

[0030] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a structural diagram of a first embodiment of a projector based on a color wheel time-sharing display and a MONO LCD screen according to the present invention;

[0033] Figure 2 It is a structural diagram of the housing assembly of the present invention;

[0034] Figure 3 It is the structural diagram of the installation pipe of the present invention;

[0035] Figure 4 It is a structural diagram of the main components of the present invention;

[0036] Figure 5 This is a schematic diagram of the optical path of Embodiment 1 of the present invention;

[0037] Figure 6It is a structural diagram of the heat dissipation component of the present invention;

[0038] Figure 7 This is a schematic diagram of the optical path of Embodiment 3 of the present invention;

[0039] Figure 8 This is a schematic diagram of the optical path of Embodiment 4 of the present invention;

[0040] Fig. 9 This is a schematic diagram of the optical path of Embodiment 5 of the present invention;

[0041] Fig.10 It is a structural diagram of a sixth embodiment of a projector based on a color wheel time-sharing display and a MONO LCD screen according to the present invention;

[0042] Fig.11 This is a schematic diagram of the overall exploded structure of a projector according to Embodiment 6 of the present invention;

[0043] Fig.12 This is a schematic diagram of the exploded structure of a projector assembly according to Embodiment 6 of the present invention;

[0044] Fig.13 This is a schematic diagram of the axial structure of an optical lens assembly according to Embodiment 6 of the present invention;

[0045] Fig.14 Schematic diagram of a top view of an optical lens assembly according to embodiment 6 of the present invention.

[0046] Figure numerals: 101, main assembly; 11, white light source; 12, focusing lens; 13, color separation wheel; 14, shaping lens; 15, polarizing lens; 16, monochrome LCD screen; 17, projection lens; 18, mounting tube; 19, through hole; 20, limit seat; 201, shell assembly; 21, shell; 22, switch; 23, data interface; 24, control circuit board; 25, upper cover; 26, protective net; 27, movable seat; 30, heat dissipation assembly; 31, guide shell; 32, connecting pipe; 33, air inlet groove; 34, heat dissipation fan; 35, dust net; 36, fixing pipe; 1001, projector upper shell; 1002, projection Projector lower shell; 1003, projector assembly; 301, power board assembly; 302, projector upper cover; 303, light source heat dissipation assembly; 304, main control circuit board; 305, projector main shell; 306, projector optical path radiator; 307, light source radiator; 308, optical lens assembly; 309, projector internal circulation fan; 3081, light source module; 3082, collimating lens; 3083, reflector; 3084, color wheel motor; 3085, collimating light cup; 3086, rear Fresnel mirror; 3087, insulation glass; 3088, LCD screen; 3089, front Fresnel mirror; 3080, lens module. DETAILED DESCRIPTION

[0047] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0048] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0049] Embodiment 1

[0050] In the prior art, a heat dissipation component is added externally, which improves the heat dissipation effect of the LCD screen, but increases the overall volume of the projector, thereby reducing the convenience of the projector and increasing the difficulty of installing the projector. In addition, one display unit in the LCD screen in the prior art has three pixels of R / G / B, which means that more grids need to be opened per unit area, and thus its light transmittance and heat dissipation effect need to be improved.

[0051] To do this, see Figure 1-Figure 5 , an embodiment of the present invention provides a projector based on color wheel time-sharing display and MONO LCD screen, including a housing component 201, wherein a main body component 101 is installed inside the housing component 201;

[0052] The main assembly 101 includes a white light source 11, a focusing lens 12, a color separation wheel 13, a shaping lens 14, a polarizing lens 15, a monochrome LCD screen 16, a projection lens 17, a mounting tube 18, a through hole 19 and a limit seat 20;

[0053] The white light source 11 is mounted on the inner rear wall of the mounting tube 18, the focusing lens 12, the color separation wheel 13, the shaping lens 14, the polarizing lens 15 and the monochrome LCD screen 16 are respectively mounted on the inner side wall of the mounting tube 18 through the limit seats 20 from back to front, the through holes 19 are symmetrically opened on the outer side wall of the mounting tube 18, and the projection lens 17 is attached to the front end of the mounting tube 18;

[0054] The housing assembly 201 includes a housing 21, an upper cover 25 and a movable seat 27;

[0055] The upper cover 25 is mounted on the upper surface of the housing 21, the projection lens 17 is mounted inside the housing 21, and the rear surface of the mounting tube 18 is fixedly connected to the front surface of the movable seat 27;

[0056] The white light source 11 is the main light source of the projector;

[0057] During operation, when the white light source 11 emits light, the divergent white light source is converged and projected onto the color separation wheel 13 through the condenser lens 12. The color separation wheel 13 separates the converged white light into red, green, and blue or other colors, and displays them in sequence in time. After separation, the light of different colors is projected onto the shaping lens 14. The shaping lens 14 regulates the projection path of the light and allows the light to be projected horizontally. The projected light is filtered by the polarizing lens 15 to form the polarized light required for the monochrome LCD screen 16 to display. Then the monochrome LCD screen 16 displays the LCD picture. According to the color wheel splitting order, such as red, green, and blue pictures, the user can see the complete color picture by utilizing the visual persistence characteristics of the human eye. Finally, it is projected through the projection lens 17 to form a projection picture on the wall or the curtain.

[0058] In order to solve the above technical problems, the embodiment of the present invention provides a projector based on color wheel time-sharing display and MONO LCD screen, and the above technical solutions are used to solve the problems:

[0059] The projection system of the present invention uses white light color separation, and has only one light source as a whole, instead of separate R / G / B light paths, thereby simplifying the optical system and reducing the production cost. Moreover, by using a white light source 11 and a color separation wheel 13 for color separation, only part of the polarized light is projected onto the monochrome LCD screen 16 per unit time, and the main heat source is at the white light source 11, not on the monochrome LCD screen 16, thereby avoiding the bottleneck problem of LCD heat dissipation. Compared with the method of adding a large number of heat dissipation mechanisms on the outside in the prior art, the problem of LCD screen heat dissipation is solved, and the overall volume of the projector will not be increased.

[0060] In conventional LCD screens in the prior art, one display unit has three pixels of R / G / B, which means that more grids need to be opened per unit area. However, in the monochrome LCD screen 16 of the present invention, one display unit has only one pixel, fewer grids per unit area, a higher aperture ratio, and better light transmittance and heat dissipation.

[0061] Embodiment 2

[0062] Please refer to Figure 6 The outer wall of the mounting tube 18 is provided with a heat dissipation assembly 30, and the heat dissipation assembly 30 includes a guide shell 31, a connecting tube 32, an air inlet groove 33, two heat dissipation fans 34, a dustproof net 35 and a fixing tube 36;

[0063] The air guide shell 31 is sleeved on the outer wall of the dustproof net 35 and is fixedly connected to the dustproof net 35. The dustproof net 35 is cylindrical. The connecting pipe 32 is fixedly connected to the outer wall of the air guide shell 31 and communicates with the air guide shell 31. The air inlet grooves 33 are equidistantly arranged at the lower part of the outer wall of the air guide shell 31. Two heat dissipation fans 34 are symmetrically installed on the inner wall of the fixed pipe 36. The fixed pipe 36 is fixedly connected to the connecting pipe 32. The top of the fixed pipe 36 is fixedly connected to the lower surface of the upper cover 25. The dustproof net 35 is sleeved on the outer wall of the mounting pipe 18. The dustproof net 35 is fixedly connected to the movable seat 27. The dust in the air can be prevented from entering the mounting pipe 18 through the dustproof net 35, thereby ensuring the imaging effect of the projector.

[0064] When the cooling fan 34 is working, the interior of the guide shell 31 is under negative pressure. At this time, the external air flows into the guide shell 31 from the air inlet groove 33, and then flows to the connecting pipe 32 and the fixing pipe 36, and finally is discharged from the outer shell 21, thereby completing the internal heat discharge. By arranging the heat dissipation mechanism on the outside of the mounting tube 18, while ensuring the heat dissipation effect, no additional space is occupied, thereby reducing the size of the projector.

[0065] In the second embodiment, the heat dissipation assembly 30 is located inside the housing 21 , and a protective net 26 is fixedly connected to the upper surface of the upper cover 25 . The position of the protective net 26 corresponds to the position of the fixed tube 36 , and the protective net 26 can prevent the user from touching the heat dissipation fan 34 .

[0066] In the second embodiment, a heat dissipation groove is provided on the lower surface of the housing 21 , and the position of the air inlet groove 33 corresponds to the position of the heat dissipation groove. The heat dissipation groove is provided to facilitate air circulation, thereby achieving heat dissipation for the projector.

[0067] In the second embodiment, the movable seat 27 is installed on the rear surface of the outer shell 21 by bolts, the guide shell 31 is fixedly connected to the movable seat 27, and the movable seat 27 is removed. Since the movable seat 27 is fixedly connected to the mounting tube 18, the guide shell 31 and the dustproof net 35, the main body assembly 101 and the heat dissipation assembly 30 can be directly taken out from the outer shell 21 through the movable seat 27, and the fixed tube 36 is fixedly connected to the lower surface of the upper cover 25 by bolts.

[0068] In the second embodiment, the front end of the projection lens 17 is located at the front part of the outer shell 21. The inner part of the outer shell 21 is provided with a groove for limiting the position of the guide shell 31. The guide shell 31 is slidably connected to the inner wall of the groove. The outer shell 21 can limit the position of the projection lens 17 and the guide shell 31 to enhance the overall stability.

[0069] In the second embodiment, a switch 22 is installed on the front surface of the housing 21 , a data interface 23 is installed on one side of the housing 21 , and a control circuit board 24 is installed inside the housing 21 .

[0070] Embodiment 3

[0071] See also Figure 7 , a polarizing lens, a monochrome LCD screen 16 and a second polarizing lens 15 are arranged behind the polarizing lens 15. The polarizing lens 15 is a Fresnel lens. The white light source 11 emits white light with a spectrum range of 380-760nm, which provides energy for the entire system. The focusing lens 12 focuses the light emitted by the white light source 11 onto the color wheel to improve the light efficiency. The focusing lens 12 is composed of 3 positive lenses. The color separation color wheel 13 can separate the white light emitted by the white light source 11 into various narrow-wavelength monochromatic lights, which are displayed in sequence and mixed into various colors of light, and the color gamut of the projected image can be improved. The color separation color wheel 13 is a rotatable mechanism and includes three color combinations of RGB. The shaping lens 14 shapes the light beam into the size ratio of the monochrome LCD screen 16 and improves the uniformity of the entire light beam. The polarizing lens 15 collimates the shaped light beam. The polarizing lens serves as a polarizer of the monochrome LCD screen 16 to convert the circularly polarized light emitted by the monochrome LCD screen 16 into linearly polarized light. Imaging the monochrome LCD screen 16, and projecting the image outside the machine for viewing;

[0072] The monochrome display screen displays the input signal. Compared with the RBG screen, the monochrome display screen has a higher aperture ratio, so the transmittance is higher. The polarizing lens 15 serves as the field lens of the projection lens 17 to focus the light and improve the light efficiency. The projection lens 17 images the monochrome LCD screen 16 and projects the picture outside the machine for viewing.

[0073] Embodiment 4

[0074] See also Figure 8 In the fourth embodiment, two reflectors are added on the basis of the third embodiment to shorten the optical path length. The first reflector is located between the color separation wheel 13 and the polarizing lens 15, and the second reflector is located between the second polarizing lens 15 and the projection lens 17.

[0075] The reflection deflection angle β=α / 2. Several deformations and improvements can be made without departing from the concept of this patent, which all fall within the scope of this patent.

[0076] Embodiment 5

[0077] See also Fig. 9 , based on the third embodiment, the fifth embodiment adds a reflector to change the path of the light path, and the light path is at a right angle.

[0078] When the present invention is working: when the white light source 11 emits light, the divergent white light source is converged and projected onto the color separation wheel 13 through the condenser lens 12. The color separation wheel 13 separates the converged white light into red, green, blue or other colors, and displays them in sequence in time division. After separation, the light of different colors is projected onto the shaping lens 14. The shaping lens 14 regulates the projection path of the light and allows the light to be projected horizontally. The projected light is filtered by the polarizing lens 15 to form the polarized light required for display by the monochrome LCD screen 16. Then the monochrome LCD screen 16 displays the LCD picture. According to the color wheel splitting order, such as red, green, and blue pictures, the user can see the complete color picture by utilizing the visual persistence characteristics of the human eye. Finally, it is projected through the projection lens 17 to form a projection picture on the wall or the curtain.

[0079] When the cooling fan 34 is working, the interior of the guide shell 31 is under negative pressure. At this time, the external air flows into the outer shell 21, and then flows into the guide shell 31 from the air inlet groove 33. The flowing air flows to the connecting pipe 32 and the fixing pipe 36, and finally is discharged from the outer shell 21, thereby completing the internal heat discharge and realizing the heat dissipation of the projector. Since a dustproof net 35 is provided on the outside of the mounting tube 18, dust in the air can be prevented from entering the mounting tube 18. By arranging the heat dissipation mechanism on the outside of the mounting tube 18, while ensuring the heat dissipation effect, no additional space is occupied, thereby reducing the volume of the projector.

[0080] Embodiment 6

[0081] See also Figure 10-Figure 14 A projector based on color wheel time-sharing display and MONO LCD screen, comprising a housing assembly 201, wherein the housing assembly 201 comprises a projector upper housing 1001 and a projector lower housing 1002, wherein a projector assembly 1003 is installed inside a chamber formed by the projector upper housing 1001 and the projector lower housing 1002: the projector assembly 1003 comprises a projector upper cover 302, a projector main housing 305 and an optical lens assembly 308;

[0082] The optical lens assembly 308 is installed in the card slot of the projector main housing 305;

[0083] The projector cover 302 is located on the top of the optical lens assembly 308 and is snap-connected to the top of the projector main housing 305;

[0084] The optical lens assembly 308 includes a light source module 3081, a collimating lens 3082, a reflector 3083, a color wheel motor 3084, a collimating light cup 3085, a rear Fresnel mirror 3086, a heat-insulating glass 3087, an LCD screen 3088, a front Fresnel mirror 3089, and a lens module 3080;

[0085] A rear Fresnel mirror 3086, a heat-insulating glass 3087, an LCD screen 3088 and a front Fresnel mirror 3089 are arranged in sequence between the collimating light cup 3085 and the lens module 3080; a color wheel motor 3084 is arranged at one end of the collimating light cup 3085 away from the lens module 3080; a reflector 3083 is arranged at one end of the color wheel motor 3084 away from the collimating light cup 3085; a reflector 3083 and a light source module 3081 are respectively arranged at the front and rear ends of the collimating lens 3082; and the light source module 3081 and the collimating lens 3082 are arranged perpendicular to the color wheel motor 3084.

[0086] Specifically: the projector assembly 1003 also includes a power board assembly 301, a light source heat dissipation assembly 303, a main control circuit board 304, a projector optical path heat sink 306, a light source heat sink 307, and a projector internal circulation fan 309;

[0087] The projector optical path radiator 306 and the projector internal circulation fan 309 are installed on the bottom surface of the projector main housing 305, and the main control circuit board 304 is snap-connected at the top of the projector main housing 305 and at one end away from the lens module 3080. The light source heat dissipation assembly 303 and the light source radiator 307 are installed in sequence on one side of the projector main housing 305 and close to one end of the main control circuit board 304, and the power board assembly 301 is installed on one side of the projector main housing 305 and close to one end of the lens module 3080.

[0088] Specifically: the light source heat dissipation assembly 303 includes a light source and a projector heat dissipation fan, and the light source is installed inside the projector heat dissipation fan.

[0089] Specifically: the color wheel motor 3084 is a color wheel motor with R / G / B filters distributed thereon.

[0090] In this embodiment, the white light source is the total light source of the projection system;

[0091] The condenser lens converges the divergent white light source and projects it onto the color wheel;

[0092] The color wheel separates the white light into three colors: red, green, and blue (or other combinations), and displays them in sequence at different times.

[0093] The shaping lens, after the light of different colors is projected, regularizes the projection path of the light so that the light can be projected as horizontally as possible;

[0094] Polarized lens: the projected light is filtered by the polarized lens to form the polarized light required for LCD screen display;

[0095] Monochrome LCD screen, LCD screen display, according to the color wheel splitting order, such as displaying red, green, and blue pictures in sequence, using the visual persistence characteristics of the human eye to see the complete color picture;

[0096] The time-sharing display image is projected through the projection lens to form a projection image on the wall or screen.

[0097] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A projector based on a color wheel time-sharing display and a MONO LCD screen, comprising a housing assembly (201), the housing assembly (201) comprising a shell (21), an upper cover (25) and a movable seat (27), a main assembly (101) being installed inside a chamber formed by the shell (21) and the upper cover (25); The main body component (101) comprises a white light source (11), a focusing lens (12), a color separation wheel (13), a shaping lens (14), a polarizing lens (15), a monochrome LCD screen (16), a projection lens (17), a mounting tube (18), a through hole (19), and a limit seat (20); The white light source (11) is mounted on the inner rear wall of the mounting tube (18); the focusing lens (12), the color separation wheel (13), the shaping lens (14), the polarizing lens (15) and the monochrome LCD screen (16) are respectively mounted on the inner side wall of the mounting tube (18) from back to front through the limiting seat (20); the through hole (19) is symmetrically opened on the outer side wall of the mounting tube (18); the projection lens (17) is attached to the front end of the mounting tube (18); the upper cover (25) is mounted on the upper surface of the outer shell (21); the projection lens (17) is mounted inside the outer shell (21); and the rear surface of the mounting tube (18) is fixedly connected to the front surface of the movable seat (27); A heat dissipation assembly (30) is installed on the outer side wall of the installation tube (18), and the heat dissipation assembly (30) comprises a guide shell (31), a connecting tube (32), an air inlet groove (33), two heat dissipation fans (34), a dust screen (35) and a fixing tube (36); The guide shell (31) is sleeved on the outer wall of the dustproof net (35) and is fixedly connected to the dustproof net (35); the dustproof net (35) is cylindrical; the connecting pipe (32) is fixedly connected to the outer wall of the guide shell (31) and is in communication with the guide shell (31); the air inlet grooves (33) are equidistantly arranged at the lower part of the outer wall of the guide shell (31); the two heat dissipation fans (34) are symmetrically mounted on the inner wall of the fixed pipe (36); the fixed pipe (36) and the connecting pipe (32) are connected to each other. The connecting pipe (32) is fixedly connected, and the top end of the fixing pipe (36) is fixedly connected to the lower surface of the upper cover (25); the dustproof net (35) is sleeved on the outer wall of the mounting pipe (18), and the dustproof net (35) is fixedly connected to the movable seat (27); the heat dissipation component (30) is located inside the outer shell (21), and the upper surface of the upper cover (25) is fixedly connected with a protective net (26), and the position of the protective net (26) corresponds to the position of the fixing pipe (36).

2. A projector based on color wheel time-sharing display and MONO LCD screen according to claim 1, characterized in that: A heat dissipation groove is provided on the lower surface of the housing (21), and the position of the air inlet groove (33) corresponds to the position of the heat dissipation groove; the movable seat (27) is mounted on the rear surface of the housing (21) by means of bolts, and the guide shell (31) is fixedly connected to the movable seat (27).

3. A projector based on color wheel time-sharing display and MONO LCD screen according to claim 2, characterized in that: The front end of the projection lens (17) is located at the front part of the housing (21); a groove for defining the position of the guide shell (31) is provided inside the housing (21); the guide shell (31) is slidably connected to the inner wall of the groove; a switch (22) is installed on the front surface of the housing (21); a data interface (23) is installed on one side of the housing (21); and a control circuit board (24) is installed inside the housing (21).

Images