CN212905875U - Closed projection ray apparatus - Google Patents
Closed projection ray apparatus Download PDFInfo
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- CN212905875U CN212905875U CN202021915402.1U CN202021915402U CN212905875U CN 212905875 U CN212905875 U CN 212905875U CN 202021915402 U CN202021915402 U CN 202021915402U CN 212905875 U CN212905875 U CN 212905875U
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- conducting part
- medium heat
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- closed space
- fresnel lens
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Abstract
The utility model discloses a closed projection optical machine, which comprises a display component, a Fresnel lens, a cover body and a medium heat conducting part; the display module is arranged in the closed space, a gas circulation path is formed in the closed space, and gas in the closed space can flow through the display module, the Fresnel lens and the medium heat conducting part along the gas circulation path; one side of the medium heat conducting part is arranged in the closed space and the other side of the medium heat conducting part is arranged outside the closed space. The gas flows in the closed space to dissipate heat, so that the display assembly and the Fresnel lens are always kept clean and transparent, and the long-term high-definition imaging of the projection light machine is facilitated; the gas flows along the gas circulation path to take away the heat on the display component and the Fresnel lens, and then flows through the medium heat conduction part to conduct the heat away, so that the circulation continuously takes away the heat for the display component and the Fresnel lens, and the phenomenon that the imaging effect is influenced or even the device is damaged due to overhigh temperature is avoided.
Description
Technical Field
The utility model belongs to projection ray apparatus field, in particular to closed projection ray apparatus.
Background
For a projection optical machine, dust has a large influence on the projection optical machine, enters an optical assembly in the projection optical machine and is attached to parts such as a display screen, a Fresnel lens and a reflector, so that the projection effect is greatly influenced, and for manufacturers, the after-sale maintenance cost of the projection optical machine is increased.
The semi-closed optical machine is communicated with the outside, and external cold air can be continuously introduced into the optical machine, so that effective heat dissipation of optical components such as a display screen, a Fresnel lens and the like in a high-heat environment is realized. However, because the machine is not completely closed, a large amount of external dust enters the optical system after the machine runs for a long time, so that the dust is accumulated on the display screen, the service life of image display and parts is influenced, the yield control of production is also adversely affected, and the watching effect is also influenced.
The projection light machine is made into a totally enclosed form, so that the possibility of dust entering can be blocked. However, due to the closed design, a large amount of heat inside the optical device cannot be effectively and timely discharged out of the optical device, which easily causes the temperature of the internal optical components such as the display screen to be too high. Some closed optical machines disclosed in the prior art have complex heat dissipation structures, high production cost, difficult batch production and wide application.
Disclosure of Invention
In order to solve the above problem, an object of the present invention is to provide a closed optical machine capable of effectively dissipating heat.
Another object of the utility model is to provide a simple structure, low cost realize radiating closed ray apparatus.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the utility model provides a closed projection optical machine, which comprises a display component, a Fresnel lens, a cover body and a medium heat conducting part; the display module is arranged in the closed space, a gas circulation path is formed in the closed space, and gas in the closed space can flow through the display module, the Fresnel lens and the medium heat conducting part along the gas circulation path; one side of the medium heat conducting part is arranged in the closed space and the other side of the medium heat conducting part is arranged outside the closed space. The medium heat conduction part conducts heat from a high-temperature part to a low-temperature part by utilizing the physical property of the medium. The air flows in the closed space to dissipate heat, so that dust, impurities and the like in the outside air cannot be brought into the projector, the display assembly and the Fresnel lens are always kept clean and transparent, and the long-term high-definition imaging of the projector is facilitated; gas flows along the gas circulation route, takes away the heat on display module, fresnel lens when flowing through display module, fresnel lens, when flowing through medium heat conduction portion again, goes out the heat conduction through medium heat conduction portion, and the heat is taken away for display module, fresnel lens to so circulation lasts, avoids the high temperature and influences the imaging effect and damage the device even.
Further, still include COB light source, light funnel, the big, the tip of light funnel are arranged respectively in to display module and COB light source, fresnel lens parallel arrangement in display module's opposite side, and the gas circulation route includes the first passageway that forms between the cover body and the display module, the second passageway that forms between display module and the fresnel lens, and the medium heat-conducting part is arranged in between first passageway and the second passageway. When the gas flows out of the first channel, the heat of one side of the display assembly, which is close to the light funnel, is taken away; the heat carried by the gas is conducted out through the medium heat conducting part; then flows through the second channel to take away the heat on the other side of the display component and the Fresnel lens. The above steps are repeated to dissipate heat for the closed projection light machine.
Furthermore, the cover body is also provided with heat insulation glass, the heat insulation glass is arranged between the light funnel and the display assembly in parallel, and a first channel is formed between the heat insulation glass and the display assembly. The heat insulation glass provides a heat insulation function and reduces the temperature in the closed space.
Furthermore, a circulating fan is arranged in the cover body, the circulating fan is arranged between the first channel and the second channel on the gas circulating path, and the circulating fan assists in circulating gas along the gas circulating path.
Further, the circulating fan comprises two centrifugal fans which are respectively arranged at two ends of the display component. The air on the air circulation path is sucked by the centrifugal fan and then is quickly blown to the first channel or the second channel to take away the heat on the display assembly and the Fresnel lens.
Further, still be provided with the plastic spacer in the cover body, plastic spacer one end is connected with display element, and the plastic spacer other end is connected with centrifugal fan. The plastic spacer separates the sealed space between the display module and the centrifugal fan into two channels, which facilitates the gas to flow along the gas circulation path.
Furthermore, the heat dissipation device also comprises a heat dissipation fan, wherein the heat dissipation fan is arranged outside the closed space, and an air inlet of the heat dissipation fan is opposite to the medium heat conduction part. The heat of the medium heat conducting part is quickly dissipated by the heat dissipating fan, so that the medium heat conducting part is quickly cooled, and the medium heat conducting part is favorable for heat dissipation of a closed space.
Furthermore, the overall shape of the medium heat-conducting part is in an L shape, the gas circulation path further comprises a third channel formed between the medium heat-conducting part and the plastic spacer, and the third channel is arranged between the first channel and the second channel. The contact area of the medium heat conducting part and the gas is large, and the heat carried by the gas can be absorbed quickly.
Further, medium heat-conducting portion includes aluminum sheet and aluminium pig, and the aluminum sheet setting sets up the aluminium pig in medium heat-conducting portion both sides, interval in the middle of the both sides aluminum sheet. The aluminum material has good heat-conducting property, and the aluminum sheet and the aluminum block are arranged to increase the contact area of the medium heat-conducting part and the gas, so that the heat-conducting efficiency is improved.
The utility model has the advantages that: compared with the prior art, in the utility model, the air flows in the closed space to dissipate heat, so that dust, impurities and the like in the outside air can not be brought into the projector, the display assembly and the Fresnel lens can always keep clean and transparent, and the long-term high-definition imaging of the projector is facilitated; gas flows along the gas circulation route, takes away the heat on display module, fresnel lens when flowing through display module, fresnel lens, when flowing through medium heat conduction portion again, goes out the heat conduction through medium heat conduction portion, and the heat is taken away for display module, fresnel lens to so circulation lasts, avoids the high temperature and influences the imaging effect and damage the device even.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
referring to fig. 1, the present invention provides a closed projection optical machine, which includes a COB light source 1, a light funnel 2, a display module 3, a fresnel lens 4, a heat insulation glass 5, a cover body 6, a medium heat conducting portion 7, a plastic spacer 8, a heat dissipation fan 9, and a centrifugal fan 10; thermal-insulated glass 5, the cover body 6, medium heat-conducting part 7, fresnel lens 4 enclose and close and form the enclosure space, and display module 3, centrifugal fan 10, plastic spacer 8 set up in the enclosure space, and radiator fan 9, COB light source 1, light funnel 2 set up outside the enclosure space. One side of the medium heat-conducting part 7 is arranged in the closed space and the other side of the medium heat-conducting part 7 is arranged outside the closed space. The overall shape of the medium heat-conducting portion 7 is "L" shaped.
A gas circulation path 11 is formed in the closed space, the gas circulation path 11 includes a first channel 111 formed between the heat insulating glass 5 and the display module 3, a second channel 112 formed between the display module 3 and the fresnel lens 4, and a third channel 113 formed between the medium heat-conducting portion 7 and the plastic spacer 8, and the third channel 113 is disposed between the first channel 111 and the second channel 112. One centrifugal fan 10 is arranged between a third channel 113 and a second channel 112 on the gas circulation path 11, the other centrifugal fan 10 is arranged between the first channel 111 and the second channel 112, the gas in the closed space can flow from the first channel 111 to the third channel 113 along the gas circulation path 11, in the third channel 113, the medium heat-conducting part 7 absorbs the heat carried by the gas, and after passing through the third channel 113, the gas is cooled; the cooled gas is sucked by the centrifugal fan 10 and then quickly blown to the second channel 112, and the gas takes away heat on the display modules 3 and the Fresnel lenses 4 positioned at the left and right sides of the second channel 112 through the second channel 112; then, the air is sucked by the centrifugal fan 10 and blown to the first channel 111 rapidly, and the above steps are repeated in this way to dissipate heat for the closed projection light machine.
The heat radiation fan 9 is arranged outside the closed space, and an air inlet of the heat radiation fan 9 is over against the medium heat conducting part 7. The heat dissipation fan 9 enables the heat of the medium heat conduction portion 7 to be dissipated quickly, so that the medium heat conduction portion 7 is cooled quickly, and heat dissipation of the medium heat conduction portion 7 in a closed space is facilitated.
The medium heat conducting part 7 comprises aluminum sheets and aluminum blocks, the aluminum sheets are arranged on two sides of the medium heat conducting part 7, and the aluminum blocks are arranged in the middle of the aluminum sheets on two sides at intervals. The aluminum material has good heat conduction performance, and the medium heat conduction part 7 conducts heat from a high-temperature part to a low-temperature part by utilizing the physical property of the aluminum material. The arrangement of the aluminum sheets and the aluminum blocks increases the contact area of the medium heat conducting part 7 and the gas, and improves the heat conducting efficiency.
The gas in the closed space can flow through the display component 3, the Fresnel lens 4 and the medium heat conducting part 7 along the gas circulation path 11; the air flows in the closed space to dissipate heat, so that dust, impurities and the like in the outside air cannot be brought into the projector, the display assembly 3 and the Fresnel lens 4 are always kept clean and transparent, and long-term high-definition imaging of the projector is facilitated; gas flows along gas circulation route 11, takes away the heat on display module 3, fresnel lens 4 when flowing through display module 3, fresnel lens 4, when flowing through medium heat-conducting part 7 again, goes out the heat conduction through medium heat-conducting part 7, and the heat is taken away for display module 3, fresnel lens 4 to circulation such continuously, avoids the high temperature and influences the imaging effect and even damages the device.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a closed projection ray apparatus, includes display element, fresnel lens, its characterized in that: also comprises a cover body and a medium heat conducting part; the display module is arranged in the closed space, a gas circulation path is formed in the closed space, and gas in the closed space can flow through the display module, the Fresnel lens and the medium heat conducting part along the gas circulation path; one side of the medium heat conducting part is arranged in the closed space and the other side of the medium heat conducting part is arranged outside the closed space;
the closed projection light machine further comprises a COB light source and a light funnel, the display assembly and the COB light source are arranged at the large end and the small end of the light funnel respectively, the Fresnel lens is arranged on the other side of the display assembly in parallel, the gas circulation path comprises a first channel formed between the cover body and the display assembly, a second channel formed between the display assembly and the Fresnel lens, and the medium heat conducting part is arranged between the first channel and the second channel on the gas circulation path.
2. The hermetic projector according to claim 1, wherein: the cover body is also provided with heat insulation glass, the heat insulation glass is arranged between the light funnel and the display assembly in parallel, and a first channel is formed between the heat insulation glass and the display assembly.
3. The hermetic projector according to claim 1, wherein: and a circulating fan is also arranged in the housing, the circulating fan is arranged between the first channel and the second channel on the gas circulation path, and the circulating fan assists the gas to circulate along the gas circulation path.
4. The hermetic projector according to claim 3, wherein: the circulating fan comprises two centrifugal fans which are respectively arranged at two ends of the display component.
5. The hermetic projector according to claim 4, wherein: still be provided with the plastic spacer in the cover body, plastic spacer one end is connected with display module, and the plastic spacer other end is connected with centrifugal fan.
6. The hermetic projector according to claim 1, wherein: the heat dissipation fan is arranged outside the closed space, and an air inlet of the heat dissipation fan is opposite to the medium heat conducting part.
7. The hermetic projector according to claim 5, wherein: the overall shape of the medium heat-conducting part is L-shaped, the gas circulation path also comprises a third channel formed between the medium heat-conducting part and the plastic spacer, and the third channel is arranged between the first channel and the second channel.
8. The hermetic projector according to claim 7, wherein: the medium heat conducting part comprises aluminum sheets and aluminum blocks, the aluminum sheets are arranged on two sides of the medium heat conducting part, and the aluminum blocks are arranged in the middle of the aluminum sheets on two sides at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021915402.1U CN212905875U (en) | 2020-09-04 | 2020-09-04 | Closed projection ray apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021915402.1U CN212905875U (en) | 2020-09-04 | 2020-09-04 | Closed projection ray apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212905875U true CN212905875U (en) | 2021-04-06 |
Family
ID=75255854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021915402.1U Active CN212905875U (en) | 2020-09-04 | 2020-09-04 | Closed projection ray apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212905875U (en) |
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2020
- 2020-09-04 CN CN202021915402.1U patent/CN212905875U/en active Active
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