CN119087733B - Projector based on color wheel time-sharing display and MONO LCD screen - Google Patents
Projector based on color wheel time-sharing display and MONO LCD screen Download PDFInfo
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- CN119087733B CN119087733B CN202411572008.5A CN202411572008A CN119087733B CN 119087733 B CN119087733 B CN 119087733B CN 202411572008 A CN202411572008 A CN 202411572008A CN 119087733 B CN119087733 B CN 119087733B
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 46
- 238000000926 separation method Methods 0.000 claims abstract description 25
- 238000007493 shaping process Methods 0.000 claims abstract description 13
- 239000000428 dust Substances 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 abstract description 17
- 239000003086 colorant Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 230000005855 radiation Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000002834 transmittance Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 3
- 230000002688 persistence Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/145—Housing details, e.g. position adjustments thereof
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/142—Adjusting of projection optics
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
- Liquid Crystal (AREA)
Abstract
The invention provides a projector based on color wheel time-sharing display and a MONO LCD screen, which comprises a shell component, wherein a main body component is arranged in the shell component, the main body component comprises a white light source, a condensing lens, a color separation color wheel, a shaping lens, a polarizing lens, a monochromatic LCD screen, a projection lens, a mounting tube, a through hole and a limiting seat, and the white light source is mounted on the inner rear wall of the mounting tube. The invention uses white light color separation, the whole has 1 light source instead of R/G/B separated light path, so that the optical system can be simplified, and only partial polarized light is projected onto a monochromatic LCD screen in unit time by using a white light source and a color separation color wheel, and the main heat source is arranged at the white light source instead of the monochromatic LCD screen, so that the problem of LCD heat dissipation bottleneck is avoided.
Description
Technical Field
The invention relates to an LCD projector, in particular to a projector based on color wheel time-sharing display and MONO LCD screen, and belongs to the technical field of projectors.
Background
The monochrome LCD projector is mainly composed of one liquid crystal panel. When the light source emits white light, it is first converted into regular parallel light by the fresnel lens and then polarized light is formed by the polarizer. Next, the light passes through the intermediate LCD panel, transmitting image light of different colors. The image light is focused and enhanced by the Fresnel lens, and finally projected out of the projection display screen through the total reflection mirror.
Single LCD projection has evolved to the point where it has emerged that the light source can continue to illuminate, but the LCD screen cannot support higher temperatures. The bottleneck is also gradually developed at present by the more temperature resistant screens being made or by increasing the heat dissipation of the screens.
For example, CN202322005979.9 "single LCD projector machine and projector" discloses a technology, in which an LCD screen is installed through an installation cavity in a housing, and air in the installation cavity exchanges heat with external air through an internal circulation channel and an external circulation channel in a heat exchanger, and external air flow and air flow in the installation cavity exchange heat continuously when flowing, so that the heat exchange efficiency is higher than that of a section radiator, and the temperature of the LCD screen can be reduced to a greater extent;
The mode of adding the heat dissipation component outside improves the heat dissipation effect on the LCD screen, but leads to the whole volume increase of the projector, thereby reducing the convenience of the projector and increasing the installation difficulty of the projector;
For example, CN202122031272.6 "a short-focus single-LCD projector high-definition light path" discloses a technology, which forms a projection light path through structures such as a light source, a light funnel, a collimating lens, a heat insulation sheet, an LCD screen, and a focusing lens, and then cooperates with the projection lens to implement high-definition imaging of a picture, but 1 display unit in the LCD screen has three pixels R/G/B, which means that more grids are required to be opened per unit area, and further the light transmittance and the heat dissipation effect of the LCD screen still need to be improved;
For this purpose, a projector based on color wheel time-sharing display and MONO LCD screen is proposed.
Disclosure of Invention
In view of the above, 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 provides a beneficial choice.
The technical scheme of the embodiment of the invention is realized as follows:
The projector based on the color wheel time-sharing display and the MONO LCD screen comprises a shell component, wherein the shell component comprises a projector upper shell and a projector lower shell, and a projector component is arranged in a cavity formed by the projector upper shell and the projector lower shell;
the optical lens component is arranged in a clamping groove of the projector main shell;
the projector upper cover is positioned at the top of the optical lens assembly and is in buckling connection with the top of the projector main machine shell;
the optical lens assembly comprises a light source module, a collimating lens, a reflecting mirror, a color wheel motor, a collimating light cup, a rear Fresnel mirror, heat insulation glass, an LCD screen, a front Fresnel mirror and a lens module;
The collimating light cup with arrange in proper order between the camera lens module and be provided with back fei nier, insulating glass, LCD screen and preceding fei nier, the collimating light cup is kept away from the one end of camera lens module is provided with the colour wheel motor, the colour wheel motor is kept away from the one end of collimating light cup is provided with the speculum, both ends are provided with speculum and light source module respectively around the collimating lens, light source module and collimating lens all with colour wheel motor mutually perpendicular sets up.
It is further preferable that the projector assembly further comprises a power panel assembly, a light source heat dissipation assembly, a main control circuit board, a projector light path radiator, a light source radiator and a projector internal circulating fan;
The utility model discloses a projector, including main casing, lens module, main control circuit board, projector light path radiator and projector internal circulation fan install in the bottom surface of main casing of projector, the top of main casing of projector and keep away from the one end department buckle of lens module is connected with the main control circuit board, light source radiator module and light source radiator and be close to are installed in proper order to one side of main casing of projector the one end of main circuit board, one side of main casing of projector and be close to the one end of lens module is installed the power strip subassembly.
It is further preferable that the light source heat dissipation assembly comprises a light source and a projector heat dissipation fan, and the light source is arranged in the projector heat dissipation fan.
Further preferably, the color wheel motor is a color wheel motor distributed with R/G/B filters.
The projector based on the color wheel time-sharing display and the MONO LCD screen is characterized in that the shell assembly further comprises a shell, an upper cover and a movable seat, and a main body assembly is arranged in a cavity formed by the shell and the upper cover;
The main body component comprises a white light source, a condensing lens, a color separation color wheel, a shaping lens, a polarizing lens, a monochromatic LCD screen, a projection lens, an installation tube, a through hole and a limiting seat;
The white light source is installed in the interior back wall of installation tube, condensing lens, colour separation colour wheel, plastic lens, polarized lens and monochromatic LCD screen pass through respectively from the back to the front spacing seat install in the inside wall of installation tube, the through-hole symmetry set up in the lateral wall of installation tube, projection lens laminate in the front end of installation tube.
It is further preferable that 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;
the outer side wall of the installation tube is provided with a heat radiation assembly, and the heat radiation assembly comprises a guide shell, a connecting tube, an air inlet groove, two heat radiation fans, a dust screen and a fixing tube;
The air inlet grooves are formed in the lower portion of the outer side wall of the guide shell at equal intervals, two radiating fans are symmetrically arranged on the inner side wall of the fixed pipe, the fixed pipe is fixedly connected with the connecting pipe, the top end of the fixed pipe is fixedly connected with the lower surface of the upper cover, the dust screen is sleeved on the outer side wall of the mounting pipe, the dust screen is fixedly connected with the movable seat, the radiating assembly is located in the shell, the upper surface of the upper cover is fixedly connected with the protective screen, and the positions of the protective screens correspond to the positions of the fixed pipe.
It is further preferable that the lower surface of the housing is provided with a heat dissipation groove, the position of the air inlet groove corresponds to the position of the heat dissipation groove, the movable seat is mounted on the rear surface of the housing through a bolt, and the diversion shell is fixedly connected with the movable seat.
It is further preferable that the front end of the projection lens is located at the front portion of the housing, a groove for limiting the position of the diversion shell is formed in the housing, the diversion shell is connected to the inner side wall of the groove in a sliding mode, a switch is installed on the front surface of the housing, a data interface is installed on one side of the housing, and a control circuit board is installed in the housing.
By adopting the technical scheme, the embodiment of the invention has the following advantages:
1. According to the invention, by using white light color separation, the whole light path is provided with 1 light source instead of R/G/B, so that an optical system can be simplified, the production cost is reduced, and by using a white light source and using a color separation color wheel for color separation, only partial polarized light is projected onto a monochromatic LCD screen in unit time, and a main heat source is arranged at the white light source and is not arranged on the monochromatic LCD screen, so that the bottleneck problem of LCD heat dissipation is avoided, and compared with the mode of externally adding a large number of heat dissipation mechanisms in the prior art, the problem of LCD screen heat dissipation is solved, and the whole volume of a projector is not increased;
2. Compared with the prior art, in the conventional LCD screen in the prior art, 1 display unit has three pixels of R/G/B, so that more grids are required to be opened in unit area, but in the monochromatic LCD screen in the invention, 1 display unit has 1 pixel, the grids in unit area are fewer, the aperture ratio is higher, and the light transmittance and heat dissipation are better.
The foregoing summary is for the purpose of the specification 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 become apparent by reference to the drawings and the following detailed description.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a first embodiment of a color wheel time-sharing display and MONO LCD screen based projector of the present invention;
FIG. 2 is a block diagram of a housing assembly of the present invention;
FIG. 3 is a block diagram of a mounting tube of the present invention;
FIG. 4 is a block diagram of a body assembly of the present invention;
FIG. 5 is a schematic view of an optical path according to a first embodiment of the present invention;
FIG. 6 is a block diagram of a heat dissipating assembly according to the present invention;
FIG. 7 is a schematic view of a light path according to a third embodiment of the present invention;
FIG. 8 is a schematic view of a fourth embodiment of the present invention;
FIG. 9 is a schematic diagram of a fifth embodiment of the present invention;
FIG. 10 is a block diagram of a sixth embodiment of the projector of the present invention based on color wheel time-sharing display and MONO LCD screen;
FIG. 11 is a schematic diagram of an overall exploded structure of a projector according to a sixth embodiment of the invention;
FIG. 12 is an exploded view of a projector assembly according to a sixth embodiment of the invention;
FIG. 13 is a schematic axial side view of an optical lens assembly according to a sixth embodiment of the present invention;
fig. 14 is a schematic top view of an optical lens assembly according to a sixth embodiment of the invention.
Reference numeral 101, a body assembly; 11, white light source, 12, condenser lens, 13, color separation color wheel, 14, shaping lens, 15, polarized lens, 16, monochrome LCD screen, 17, projection lens, 18, mounting tube, 19, through hole, 20, limit seat, 201, housing assembly, 21, housing, 22, switch, 23, data interface, 24, control circuit board, 25, upper cover, 26, protective mesh, 27, movable seat, 30, heat dissipation assembly, 31, guide shell, 32, connecting tube, 33, air inlet slot, 34, heat dissipation fan, 35, dust screen, 36, fixed tube, 1001, projector upper shell, 1002, projector lower shell, 1003, projector assembly, 301, power panel assembly, 302, projector upper cover, 303, light source heat dissipation assembly, 304, main control circuit board, 305, projector main housing, 306, projector light path radiator, 307, light source radiator, 308, optical lens assembly, 309, projector inner circulation fan, 3081, light source module, 3082, collimating lens, 3083, reflector, 3084, color wheel motor, 3085, 3086, 3088, rear light guide lens, 3088, LCD lens, 3080, LCD screen assembly.
Detailed Description
Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example 1
In the prior art, a heat dissipation component is externally added, and although the heat dissipation effect on the LCD screen is improved, the whole volume of the projector is increased, the convenience of the projector is further reduced, the installation difficulty of the projector is increased, and 1 display unit in the LCD screen in the prior art is provided with three pixels R/G/B, so that more grids are required to be arranged in unit area, and the light transmittance and the heat dissipation effect of the grids are required to be improved.
To this end, referring to fig. 1 to 5, an embodiment of the present invention provides a color wheel time-sharing display and MONO LCD screen-based projector, which includes a housing assembly 201, wherein a main body assembly 101 is installed inside the housing assembly 201;
The main body assembly 101 comprises a white light source 11, a condensing lens 12, a color separation color wheel 13, a shaping lens 14, a polarized lens 15, a monochromatic LCD screen 16, a projection lens 17, a mounting tube 18, a through hole 19 and a limiting seat 20;
The white light source 11 is arranged on the inner rear wall of the mounting tube 18, the condensing lens 12, the color separation wheel 13, the shaping lens 14, the polarizing lens 15 and the monochromatic LCD screen 16 are respectively arranged on the inner side wall of the mounting tube 18 from back to front through the limiting seat 20, the through holes 19 are symmetrically formed 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;
the housing assembly 201 includes a housing 21, an upper cover 25, and a movable seat 27;
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;
The white light source 11 is the total light source of the projector;
When the LED display screen works, when the white light source 11 emits light, the divergent white light source is converged and projected onto the color separation color wheel 13 through the condensing lens 12, the color separation color wheel 13 separates the converged white light into red, green and blue colors or other colors, the colors are sequentially displayed in a time-sharing mode, different colors of light after the color separation are projected onto the shaping lens 14, the shaping lens 14 regulates the projection path of the light, the light is horizontally projected out, the projected light is filtered through the polarizing lens 15 to form the required polarized light for displaying on the monochromatic LCD screen 16, then the monochromatic LCD screen 16 displays an LCD picture, and according to the color wheel splitting sequence, such as red, green and blue pictures, a user can see a complete color picture by utilizing the persistence characteristics of human eyes, and finally the complete color picture is projected out through the projection lens 17 to form a projection picture on a wall surface or a curtain.
In order to solve the technical problems, the embodiment of the invention provides a projector based on color wheel time-sharing display and MONO LCD screen, and solves the problems through the technical scheme:
The projection system of the invention has the advantages that by using white light color separation, the whole projection system has only 1 light source instead of R/G/B separated light paths, thereby simplifying the optical system, reducing the production cost, and by using the white light source 11 and using the color separation color wheel 13 for color separation, only partial polarized light is projected onto the monochromatic LCD screen 16 in unit time, and the main heat source is arranged at the white light source 11 and is not arranged on the monochromatic LCD screen 16, thereby avoiding the bottleneck problem of LCD heat dissipation, and compared with the mode of externally adding a large number of heat dissipation mechanisms in the prior art, the problem of LCD screen heat dissipation is solved, and the whole volume of the projector is not increased;
In the conventional LCD screen in the prior art, 1 display unit has three pixels of R/G/B, which means that more grids are required to be opened in a unit area, but in the monochrome LCD screen 16 of the present invention, 1 display unit has only 1 pixel, less grids in a unit area, higher aperture ratio, and better light transmittance and heat dissipation.
Example two
Referring to fig. 6, a heat dissipation assembly 30 is mounted on an outer side wall of the mounting tube 18, and the heat dissipation assembly 30 includes a guide shell 31, a connection tube 32, an air inlet groove 33, two heat dissipation fans 34, a dust screen 35 and a fixing tube 36;
The air guide shell 31 is sleeved on the outer side wall of the dust screen 35 and is fixedly connected with the dust screen 35, the dust screen 35 is in a cylinder shape, the connecting pipe 32 is fixedly connected to the outer side wall of the air guide shell 31 and is communicated with the air guide shell 31, the air inlet grooves 33 are formed in the lower part of the outer side wall of the air guide shell 31 at equal intervals, the two radiating fans 34 are symmetrically arranged on the inner side wall of the fixed pipe 36, the fixed pipe 36 is fixedly connected with the connecting pipe 32, the top end of the fixed pipe 36 is fixedly connected to the lower surface of the upper cover 25, the dust screen 35 is sleeved on the outer side wall of the mounting pipe 18, the dust screen 35 is fixedly connected with the movable seat 27, and dust in air can be prevented from entering the mounting pipe 18 through the dust screen 35, so that the imaging effect of the projector is ensured;
When the heat radiation fan 34 works, the inside of the guide shell 31 is negative pressure, at this time, the outside air flows into the guide shell 31 from the air inlet groove 33, then flows into the connecting pipe 32 and the fixing pipe 36, finally is discharged out of the shell 21, and then the inside heat can be discharged.
In the second embodiment, the heat dissipation assembly 30 is located inside the housing 21, the upper surface of the upper cover 25 is fixedly connected with the protection net 26, the position of the protection net 26 corresponds to the position of the fixing tube 36, and the protection net 26 can prevent the user from touching the heat dissipation fan 34.
In the second embodiment, the lower surface of the housing 21 is provided with a heat dissipation groove, and the position of the air inlet groove 33 corresponds to the position of the heat dissipation groove, and the heat dissipation of the projector is realized by providing the heat dissipation groove to facilitate circulation of air.
In the second embodiment, the movable seat 27 is mounted on the rear surface of the housing 21 by bolts, the air guide shell 31 is fixedly connected with the movable seat 27, and the movable seat 27 is detached, so that the main body assembly 101 and the heat dissipation assembly 30 can be directly taken out of the housing 21 by the movable seat 27 due to the fixed connection of the movable seat 27 with the mounting tube 18, the air guide shell 31 and the dust screen 35, and the fixing tube 36 is fixedly connected with the lower surface of the upper cover 25 by bolts.
In the second embodiment, the front end of the projection lens 17 is located at the front of the housing 21, the housing 21 is internally provided with a groove defining the position of the guide shell 31, the guide shell 31 is slidably connected to the inner side wall of the groove, and the positions of the projection lens 17 and the guide shell 31 can be defined by the housing 21, so as to enhance the overall stability.
In the second embodiment, a switch 22 is mounted on the front surface of the housing 21, a data interface 23 is mounted on one side of the housing 21, and a control circuit board 24 is mounted inside the housing 21.
Example III
Referring to fig. 7, a polarizing lens, a single color LCD screen 16 and a second polarizing lens 15 are disposed behind the polarizing lens 15, the polarizing lens 15 is a fresnel lens, the spectrum range of white light emitted from the white light source 11 is 380-760nm, energy is provided for the whole system, the condensing lens 12 focuses the light emitted from the white light source 11 to the color wheel, improving the light efficiency, the condensing lens 12 is composed of 3 positive lenses, the color separation color wheel 13 can divide the white light emitted from the white light source 11 into various single color lights with narrow bandwidths, sequentially displays the single color lights in a time-sharing sequence, mixes the single color lights into lights with various colors, and can improve the projection screen color gamut, the color separation color wheel 13 is a rotatable mechanism and comprises three color combinations of RGB, the shaping lens 14 shapes the light beam into the size proportion of the single color LCD screen 16, and improves the uniformity of the whole light beam, the polarized lens 15 collimates the shaped light beam, and the polarizing lens serves as a polarizer of the single color LCD screen 16 to convert the circularly polarized light emitted from the single color LCD screen 16 into linearly polarized light. Imaging the monochrome LCD screen 16, projecting the picture out of the machine for viewing;
The monochrome display screen displays input signals, has higher aperture ratio relative to the RBG screen, so that the transmittance is higher, the polarized lens 15 is used as a field lens of the projection lens 17, the light efficiency is improved by focusing light, the projection lens 17 images the monochrome LCD screen 16, and the picture is projected outside the machine for viewing.
Example IV
Referring to fig. 8, in the fourth embodiment, two reflectors are added to shorten the optical path length, wherein the first reflector is located between the color wheel 13 and the polarized lens 15, and the second reflector is located between the second polarized lens 15 and the projection lens 17;
The reflection deflection angle β=α/2 can be modified and improved without departing from the scope of the present patent, and these are all included in the present patent.
Example five
Referring to fig. 9, in the fifth embodiment, a mirror is added to change the path of the optical path, and the optical path is at a right angle.
When the white light source 11 emits light, the divergent white light source is converged and projected onto the color separation color wheel 13 through the condensing lens 12, the color separation color wheel 13 separates the converged white light into red, green and blue colors or other colors, the colors are sequentially displayed in a time-sharing mode, the light with different colors after the color separation is projected onto the shaping lens 14, the shaping lens 14 regulates the projection path of the light, the light is horizontally projected out, the projected light is filtered through the polarizing lens 15 to form the required polarized light for the monochromatic LCD screen 16 to display, then the monochromatic LCD screen 16 displays LCD pictures, and according to the color wheel splitting sequence, such as red, green and blue pictures, a user can see a complete color picture by utilizing the persistence of vision of human eyes, and finally the light is projected out through the projection lens 17 to form a projection picture on a wall surface or a curtain;
when the heat radiation fan 34 works, the inside of the guide shell 31 is negative pressure, at the moment, the outside air flows into the shell 21, then flows into the guide shell 31 from the air inlet groove 33, flows to the connecting pipe 32 and the fixing pipe 36, finally is discharged out of the shell 21, and then the heat in the projector is discharged, so that the heat radiation of the projector is realized, and the dust in the air can be prevented from entering the mounting tube 18 due to the dust screen 35 arranged outside the mounting tube 18, and the heat radiation mechanism is arranged outside the mounting tube 18, so that the heat radiation effect is ensured, and meanwhile, the volume of the projector is reduced.
Example six
Referring to fig. 10-14, a projector based on color wheel time-sharing display and a MONO LCD screen includes a housing assembly 201, wherein the housing assembly 201 includes a projector upper case 1001 and a projector lower case 1002, a projector assembly 1003 is installed in a chamber formed by the projector upper case 1001 and the projector lower case 1002, and the projector assembly 1003 includes a projector upper cover 302, a projector main case 305 and an optical lens assembly 308;
The optical lens assembly 308 is mounted in a slot of the projector main housing 305;
The projector upper cover 302 is positioned at the top of the optical lens assembly 308 and is in snap connection with the top of the projector main housing 305;
the optical lens assembly 308 includes a light source module 3081, a collimating lens 3082, a reflecting mirror 3083, a color wheel motor 3084, a collimating light cup 3085, a rear fresnel lens 3086, a heat insulating glass 3087, an LCD screen 3088, a front fresnel lens 3089, and a lens module 3080;
The collimating light cup 3085 with arrange in proper order between the camera lens module 3080 and be provided with back fei nier 3086, insulating glass 3087, LCD screen 3088 and preceding fei nier 3089, collimating light cup 3085 keeps away from camera lens module 3080's one end is provided with colour wheel motor 3084, colour wheel motor 3084 keeps away from collimating light cup 3085's one end is provided with speculum 3083, collimating lens 3082's front and back both ends are provided with speculum 3083 and light source module 3081 respectively, light source module 3081 and collimating lens 3082 all with colour wheel motor 3084 mutually perpendicular sets up.
Specifically, the projector assembly 1003 further includes a power panel assembly 301, a light source heat dissipation assembly 303, a main control circuit board 304, a projector light path radiator 306, a light source radiator 307, and a projector internal circulation fan 309;
The projector light path radiator 306 and the projector internal circulation fan 309 are mounted on the bottom surface of the projector main housing 305, the top of the projector main housing 305 is connected with the main control circuit board 304 by being buckled at one end far away from the lens module 3080, one side of the projector main housing 305 is sequentially provided with the light source radiating component 303 and the light source radiator 307 and is close to one end of the main control circuit board 304, and one side of the projector main housing 305 is close to one end of the lens module 3080 and is provided with the power board component 301.
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.
Specifically, the color wheel motor 3084 is a color wheel motor with R/G/B filters distributed.
In this embodiment, the white light source is the total light source of the projection system;
A condensing lens converging and projecting the divergent white light source onto the color wheel;
a color separation color wheel for separating the collected white light into red, green and blue (or more other combinations) for time-sharing sequential display;
The shaping lens is used for regulating the projection path of the light rays after the light rays with different colors are projected, so that the light rays are projected horizontally as much as possible;
The polarized lens filters the projected light rays to form polarized light required by the display of the LCD screen;
the single-color LCD screen is used for displaying LCD pictures, and according to the color wheel light splitting sequence, red, green and blue pictures are displayed in sequence, and the complete color pictures are seen by utilizing the persistence of vision characteristics of human eyes;
The projection lens projects the picture displayed in a time-sharing way, and the picture is projected out through the projection lens to form a projection picture on the wall surface or the curtain.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that various changes and substitutions are possible within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411572008.5A CN119087733B (en) | 2024-11-06 | 2024-11-06 | Projector based on color wheel time-sharing display and MONO LCD screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411572008.5A CN119087733B (en) | 2024-11-06 | 2024-11-06 | Projector based on color wheel time-sharing display and MONO LCD screen |
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| CN119087733A CN119087733A (en) | 2024-12-06 |
| CN119087733B true CN119087733B (en) | 2025-02-14 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114253052A (en) * | 2022-01-26 | 2022-03-29 | 深圳市科金明电子股份有限公司 | Projection arrangement based on LED light source |
| CN216670485U (en) * | 2021-09-24 | 2022-06-03 | 深圳奇立电子科技有限公司 | LCD projecting apparatus that possesses heat-proof function |
| CN221804467U (en) * | 2024-01-08 | 2024-10-01 | 广东汉影智能电子科技有限公司 | A new optical path structure of projector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211348965U (en) * | 2020-01-22 | 2020-08-25 | 深圳市九十九度光电技术有限公司 | LCD projection device |
| CN216351727U (en) * | 2021-09-24 | 2022-04-19 | 深圳奇立电子科技有限公司 | Projector |
| CN118101910A (en) * | 2024-04-16 | 2024-05-28 | 深圳市华影光学光电有限公司 | Internal circulation double-air-duct projector |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216670485U (en) * | 2021-09-24 | 2022-06-03 | 深圳奇立电子科技有限公司 | LCD projecting apparatus that possesses heat-proof function |
| CN114253052A (en) * | 2022-01-26 | 2022-03-29 | 深圳市科金明电子股份有限公司 | Projection arrangement based on LED light source |
| CN221804467U (en) * | 2024-01-08 | 2024-10-01 | 广东汉影智能电子科技有限公司 | A new optical path structure of projector |
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