CN220188845U - Off-axis projector with sealing and heat dissipation functions - Google Patents
Off-axis projector with sealing and heat dissipation functions Download PDFInfo
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- CN220188845U CN220188845U CN202320537784.6U CN202320537784U CN220188845U CN 220188845 U CN220188845 U CN 220188845U CN 202320537784 U CN202320537784 U CN 202320537784U CN 220188845 U CN220188845 U CN 220188845U
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 54
- 238000007789 sealing Methods 0.000 title claims abstract description 17
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 41
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000007664 blowing Methods 0.000 claims abstract description 3
- 230000007246 mechanism Effects 0.000 claims description 31
- 230000003287 optical effect Effects 0.000 claims description 31
- 241000237858 Gastropoda Species 0.000 claims description 3
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
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- Projection Apparatus (AREA)
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Abstract
The utility model discloses an off-axis projector with a sealing and heat dissipation function, which comprises a shell component, a shell and a shell, wherein the shell component is a hollow cavity; an off-axis light path assembly fixedly arranged in the housing assembly and performing off-axis operation on the projection light path; the lens is arranged on the shell component in a penetrating way and corresponds to the off-axis light path component; the air blowing component and the first heat dissipation component are fixedly arranged in the shell component, and form a sealed circulating air channel together with the shell component, the off-axis light path component and the lens; a fan assembly disposed in the housing assembly and on a side of the first heat dissipating assembly; the second heat dissipation component is arranged on the side edge of the fan component and the side edge of the off-axis light path component and penetrates through the shell component. The utility model realizes off-axis projection through the cooperation of the off-axis light path component and the lens; meanwhile, a sealed circulating air duct is arranged, and the liquid crystal screen is radiated through the sealed circulating air duct, so that dust is prevented from polluting the liquid crystal screen.
Description
Technical Field
The utility model relates to the technical field of projectors, in particular to an off-axis projector with a sealing and heat dissipation function.
Background
Currently, single LCD projectors are commercially available, and basically, a mode of 0% offset (0 offset) is adopted, that is, the LCD liquid crystal display center, the fresnel lens center, and the projection lens center are on the same axis, and the projected images are central symmetry with respect to the liquid crystal display. The single LCD projector lens design of 0offset (0 off axis) is relatively simple, but the lower half of the projected picture is easily blocked by the desktop during the actual projection process, which severely affects the consumer experience; meanwhile, as the heat generated by the liquid crystal screen is large, the liquid crystal screen needs to be radiated, in the prior art, the circulating air duct is mainly adopted for radiating, and external dust can be possibly brought into the projector and adhered to the liquid crystal screen, so that black spots are caused, and the projection effect is affected; therefore, the off-axis projector with the sealing and heat dissipation functions is provided and is used for solving the problem that the projection effect of the liquid crystal projector in the prior art is poor.
Disclosure of Invention
One of the objectives of the present utility model is to provide an off-axis projector with a sealed heat dissipation function, so as to solve the problem of poor projection effect of the liquid crystal projector in the prior art.
The off-axis projector with the sealing and heat dissipation functions can be realized by the following technical scheme:
the utility model relates to an off-axis projector with a sealing and heat dissipation function, which comprises a shell component, wherein the shell component is a hollow cavity; an off-axis light path assembly fixedly arranged in the housing assembly and performing off-axis operation on the projection light path; the lens is arranged on the shell component in a penetrating way and corresponds to the off-axis light path component; the air blowing component and the first heat dissipation component are fixedly arranged in the shell component, and form a sealed circulating air channel together with the shell component, the off-axis light path component and the lens; a fan assembly disposed in the housing assembly and on a side of the first heat dissipating assembly; the second heat dissipation component is arranged on the side edge of the fan component and the side edge of the off-axis light path component and penetrates through the shell component.
In one embodiment, the off-axis light path component comprises a light source, a light cone mechanism, a first fresnel lens, a polaroid, a liquid crystal screen mechanism and a second fresnel lens which are sequentially arranged, wherein the dimensional centers of the six fresnel lenses are on the same axis; the size center of the second Fresnel lens is not coincident with the optical thread center; the size center of the lens and the optical thread center of the second Fresnel lens are on the same axis.
In one embodiment, the light cone mechanism comprises a light cone bracket and a light cone body; the light cone bracket is a hollow cavity and is fixedly arranged in the shell component; the light cone body is fixedly arranged in the light cone support, and the light source and the first Fresnel lens are respectively fixedly arranged on two sides of the light cone support.
In one embodiment, the light source is an LED light source.
In one embodiment, the first fresnel lens is rectangular in shape, and its dimensional center coincides with the optical thread center.
In one embodiment, the liquid crystal screen mechanism comprises a liquid crystal screen bracket and a liquid crystal screen main body; the liquid crystal screen bracket is fixedly arranged in the shell component; the polaroid, the liquid crystal screen main body and the second Fresnel lens are sequentially arranged on the bracket of the liquid crystal screen.
In one embodiment, the housing assembly includes a main housing and a cover plate disposed above the main housing; the cover plate comprises a cover plate main body and an optical path cover plate, wherein the optical path cover plate is detachably connected to the cover plate main body, and the position of the optical path cover plate corresponds to the position of the liquid crystal screen mechanism.
In one embodiment, the blower assembly is a snail blower.
In one embodiment, the first heat dissipation component is an aluminum profile heat sink; the second heat dissipation component adopts a copper-aluminum composite heat radiator.
In one embodiment, the fan assembly is an axial flow fan.
Compared with the prior art, the off-axis projector with the sealing and heat dissipation functions has the beneficial effects that:
the off-axis projector with the sealing and heat dissipation functions is characterized in that a light source, a light cone mechanism, a first Fresnel lens, a polaroid, a liquid crystal screen mechanism and a second Fresnel lens are sequentially arranged, and the dimensional centers of the light source, the light cone mechanism, the first Fresnel lens, the polaroid, the liquid crystal screen mechanism and the second Fresnel lens are on the same axis; the second Fresnel lens adopts an eccentric design, and the optical center of the second Fresnel lens and the size center of the imaging lens are positioned on the same axis, so that the projection picture is effectively displayed on the upper half part of the projection area; meanwhile, the projector can realize the function of not shielding a projection picture by a desktop without increasing a bracket or increasing the height of a lens, so that the projection performance and the customer experience are greatly improved;
according to the off-axis projector with the sealed heat dissipation function, the shell component, the off-axis light path component, the lens, the air blast component and the first heat dissipation component form the sealed circulating air duct, the circulating air duct is used for dissipating heat of the liquid crystal screen, pollution of dust to the liquid crystal screen is prevented, and projection performance and customer experience are improved to a certain extent.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an off-axis projector with sealed heat dissipation function according to the present utility model;
FIG. 2 is a schematic cross-sectional view of an off-axis projector with sealed heat dissipation according to the present utility model shown in FIG. 1;
FIG. 3 is a schematic cross-sectional view of an off-axis projector with sealed heat dissipation as shown in FIG. 1, comprising an off-axis light path assembly and a lens;
FIG. 4 is a schematic diagram of an internal structure of an off-axis projector with a sealed heat dissipation function according to the present utility model shown in FIG. 1;
FIG. 5 is a schematic diagram of an off-axis light path assembly in the off-axis projector with sealing and heat dissipation function of FIG. 3 according to the present utility model;
FIG. 6 is a schematic cross-sectional view of the off-axis optical path assembly of FIG. 5;
FIG. 7 is a schematic diagram of an exploded construction of the off-axis optical path assembly of FIG. 5, including a second Fresnel mirror;
FIG. 8 is a schematic view of the optical path projection of the off-axis optical path assembly and lens assembly of FIG. 3;
fig. 9 is a schematic structural view of the second fresnel mirror shown in fig. 7.
The figures indicate: a housing assembly; 111, a main housing; 112, cover plate; 1121, a cover body; 1122, an optical path cover plate; 12, an off-axis optical path assembly; 121, a light cone mechanism; 1211, light cone holders; 1212, a cone body; 122, a light source; 123, a first fresnel lens; 124, a liquid crystal screen mechanism; 1241, a liquid crystal screen bracket; 1242, a liquid crystal screen body; 125, a polarizer; 126, a second fresnel lens; 1261, optical thread center; 13, a lens; 14, a blower assembly; 15, a first heat dissipation assembly; a fan assembly; 17, a second heat dissipation assembly; 20, a screen throwing area.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-9, an off-axis projector with sealed heat dissipation function of the present utility model includes a housing assembly 11, an off-axis light path assembly 12, a lens 13, a blower assembly 14, a first heat dissipation assembly 15, a fan assembly 16 and a second heat dissipation assembly 17; the shell component 11 is a hollow cavity; the off-axis light path component 12 is fixedly arranged in the shell component 11, and the off-axis light path component 12 performs off-axis operation on a projection light path; the lens 13 is arranged on the shell component 11 in a penetrating way and corresponds to the off-axis light path component 12 in position, so that an image projected by the lens 13 is positioned at the upper half part of the projection area 20; the air blast assembly 14 and the first heat dissipation assembly 15 are fixedly arranged in the shell assembly 11, and form a sealed circulation air duct together with the shell assembly 11, the off-axis light path assembly 12 and the lens 13, and the circulation air duct dissipates heat of the liquid crystal display mechanism 124 in the off-axis light path assembly 12; the fan assembly 16 is disposed in the housing assembly 11 and on a side of the first heat dissipation assembly 15, and is used for accelerating the heat dissipation performance of the first heat dissipation assembly 15; the second heat dissipation component 17 is disposed on the side of the fan component 16 and the off-axis light path component 12 and penetrates through the housing component 11, and is used for respectively performing heat dissipation operation on the fan component 16 and the light source 122 in the off-axis light path component 12. The off-axis projector with the sealed heat dissipation function of the present utility model further includes a circuit board (not shown), and the circuit board (not shown) is electrically connected to the off-axis light path component 12, the blower component 14 and the fan component 16, respectively, and the control technology is adopted in the prior art, so that the specific control process and the adopted model thereof are not repeated herein, and only the utility model is satisfied.
Referring to fig. 1 and 3, in this embodiment, the housing assembly 11 includes a main housing 111 and a cover plate 112, the cover plate 112 is disposed above the main housing 111, and the two are connected together by a fastening structure or a screw structure, and in order to enhance the sealing performance between the two, a sealing ring is disposed at a connection portion between the main housing 111 and the cover plate 112, and specifically, the sealing ring is made of silica gel. In this embodiment, the cover 112 includes a cover body 1121 and an optical path cover 1122, and the optical path cover 1122 is detachably connected to the cover body 1121 at a position corresponding to the position of the liquid crystal panel mechanism 124.
Referring to fig. 5-9, in the present embodiment, the off-axis optical path component 12 includes a light cone mechanism 121, a light source 122, a first fresnel lens 123, a liquid crystal screen mechanism 124, a polarizer 125, and a second fresnel lens 126; the light source 122, the light cone mechanism 121, the first fresnel lens 123, the polarizer 125, the liquid crystal screen mechanism 124, and the second fresnel lens 126 are sequentially disposed and have their dimensional centers on the same axis, and the optical thread center 1261 of the second fresnel lens 126 and the dimensional center of the liquid crystal screen mechanism 124 are offset; the light source 122 and the first fresnel lens 123 are respectively and fixedly arranged at two sides of the light cone mechanism 121, the light source 122 is a light emitting body of the projector, the light cone mechanism 121 is used for collecting and gathering light rays emitted by the light source 122, and the first fresnel lens 123 corrects the light rays passing through the light cone mechanism 121 into parallel light from astigmatism; the polarizer 125 and the second fresnel lens 126 are respectively and fixedly arranged at two sides of the liquid crystal screen mechanism 124, and the polarizer 125 is used for filtering out P light and transmitting effective S light; the LCD mechanism 124 is the source of projector images and colors; the size center of the second fresnel lens 126 is not coincident with the optical thread center 1261 thereof, and the second fresnel lens 126 converges the light transmitted by the liquid crystal screen mechanism 124 onto the lens 13; the lens 13 is disposed on one side of the second fresnel lens 126, and the size center thereof is on the same axis as the optical thread center 1261 of the second fresnel lens 126, so that the image projected by the lens 13 is located at the upper half of the projection area 20 by using an optical method.
Referring to fig. 6 and 7, in the present embodiment, the light cone mechanism 121 includes a light cone bracket 1211 and a light cone body 1212, the light cone bracket 1211 is a hollow cavity, the light cone bracket 1211 is fixedly disposed in the housing assembly 11, the light cone body 1212 is fixedly disposed in the light cone bracket 1211, and the light source 122 and the first fresnel lens 123 are fixedly disposed at two sides of the light cone bracket 1211 respectively; the light source 122 is an LED light source; the first fresnel lens 123 has a rectangular shape, and its size center coincides with the optical thread center.
Referring to fig. 6 and 7, in the present embodiment, the lcd mechanism 124 includes an lcd bracket 1241 and an lcd main body 1242, the lcd bracket 1241 is fixedly disposed in the housing assembly 11, and the polarizer 125, the lcd main body 1242, and the second fresnel lens 126 are sequentially disposed on the lcd bracket 1241; the second fresnel lens 126 is also rectangular in shape with its dimensional center not coincident with the optical thread center 1261.
Referring to fig. 2-4, in the present embodiment, the blower assembly 14 is a snail blower; the first heat dissipation component 15 is an aluminum profile radiator; the fan assembly 16 is an axial fan; the second heat dissipation component 17 is a copper-aluminum composite heat sink.
It should be noted that, in the off-axis projector with sealed heat dissipation function of the present utility model, by adopting the second eccentric fresnel lens 126, and the optical center of the second fresnel lens 126 and the size center of the lens 13 are on the same axis, and the axis is offset from the size center of the liquid crystal screen main body 1242 (i.e. off-axis projection), and the projection images are all displayed above the desktop by using an optical method, so that the problem that the desktop shields the lower half of the projection images is avoided; meanwhile, a sealed circulation air duct is formed by the shell component 11, the off-axis light path component 12, the lens 13, the air blast component 14 and the first heat dissipation component 15, and heat dissipation is performed on the liquid crystal display main body 1242 through the circulation air duct.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. An off-axis projector with a sealing and heat dissipation function is characterized by comprising a shell component, wherein the shell component is a hollow cavity; an off-axis light path assembly fixedly arranged in the housing assembly and performing off-axis operation on the projection light path; the lens is arranged on the shell component in a penetrating way and corresponds to the off-axis light path component; the air blowing component and the first heat dissipation component are fixedly arranged in the shell component, and form a sealed circulating air channel together with the shell component, the off-axis light path component and the lens; a fan assembly disposed in the housing assembly and on a side of the first heat dissipating assembly; the second heat dissipation component is arranged on the side edge of the fan component and the side edge of the off-axis light path component and penetrates through the shell component.
2. The off-axis projector with the sealed heat dissipation function according to claim 1, wherein the off-axis light path component comprises a light source, a light cone mechanism, a first fresnel lens, a polaroid, a liquid crystal screen mechanism and a second fresnel lens which are sequentially arranged, and the dimensional centers of the six are on the same axis; the size center of the second Fresnel lens is not coincident with the optical thread center; the size center of the lens and the optical thread center of the second Fresnel lens are on the same axis.
3. The off-axis projector with the sealing and heat dissipation functions according to claim 2, wherein the light cone mechanism comprises a light cone bracket and a light cone body; the light cone bracket is a hollow cavity and is fixedly arranged in the shell component; the light cone body is fixedly arranged in the light cone support, and the light source and the first Fresnel lens are respectively fixedly arranged on two sides of the light cone support.
4. An off-axis projector with sealed heat dissipation function as defined in claim 2, wherein the light source is an LED light source.
5. The off-axis projector with sealed heat dissipation function according to claim 2, wherein the first fresnel lens is rectangular in shape with a size center coinciding with the optical thread center.
6. The off-axis projector with the sealing and heat dissipation functions according to claim 2, wherein the liquid crystal screen mechanism comprises a liquid crystal screen bracket and a liquid crystal screen main body; the liquid crystal screen bracket is fixedly arranged in the shell component; the polaroid, the liquid crystal screen main body and the second Fresnel lens are sequentially arranged on the bracket of the liquid crystal screen.
7. The off-axis projector with sealed heat dissipation function according to claim 2, wherein the housing assembly comprises a main housing and a cover plate, the cover plate being disposed above the main housing; the cover plate comprises a cover plate main body and an optical path cover plate, wherein the optical path cover plate is detachably connected to the cover plate main body, and the position of the optical path cover plate corresponds to the position of the liquid crystal screen mechanism.
8. An off-axis projector with sealed heat dissipation function according to any of claims 1-7 and wherein said blower assembly is a snail blower.
9. The off-axis projector with sealing and heat dissipation function according to any one of claims 1-7, wherein the first heat dissipation component is an aluminum profile heat sink; the second heat dissipation component adopts a copper-aluminum composite heat radiator.
10. An off-axis projector with sealed heat dissipation according to any of claims 1-7 and wherein said fan assembly is an axial fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320537784.6U CN220188845U (en) | 2023-03-20 | 2023-03-20 | Off-axis projector with sealing and heat dissipation functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320537784.6U CN220188845U (en) | 2023-03-20 | 2023-03-20 | Off-axis projector with sealing and heat dissipation functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220188845U true CN220188845U (en) | 2023-12-15 |
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ID=89103579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320537784.6U Active CN220188845U (en) | 2023-03-20 | 2023-03-20 | Off-axis projector with sealing and heat dissipation functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220188845U (en) |
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2023
- 2023-03-20 CN CN202320537784.6U patent/CN220188845U/en active Active
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