Projector

Abstract

The utility model relates to the technical field of projection equipment, in particular to a projector, which comprises a shell, and a projection assembly, an air uniformizing structure and a cooling fan which are arranged on the shell, a containing cavity is formed in the shell, an air duct inlet communicated with the containing cavity is formed in the shell, and the projection assembly is arranged in the containing cavity; the air inlet end of the air uniformizing structure is connected with an air outlet of the cooling fan, and the air outlet end of the air uniformizing structure is connected with the air channel inlet. According to the projector provided by the embodiment of the invention, the air uniformizing structure is arranged between the cooling fan and the air duct inlet, so that airflow blown by the cooling fan passes through the air uniformizing structure and then enters the accommodating cavity of the shell to dissipate heat of the internal projection assembly, thereby enabling the airflow entering the accommodating cavity to be distributed more uniformly; the problem of poor local heat dissipation effect caused by non-uniform distribution of heat dissipation airflow in the existing projector can be effectively solved.

Description

[Technical field]

[0001] The utility model relates to the technical field of projection equipment, in particular to a projector. [Background technology]

[0002] In modern visual display technology, projectors play a vital role. They use the principle of optical magnification imaging to enlarge images or video content and project them onto the screen. They are widely used in education, business presentations, home entertainment and other fields. As users' requirements for image quality continue to increase, the design of projectors tends to have high brightness output, which directly leads to internal thermal management becoming one of the key technical challenges. In particular, for projectors with a closed optical path design, although it effectively blocks external dust, it also limits the ability to dissipate heat naturally. Compared with an open optical path design, closed projectors usually perform poorly in terms of heat dissipation performance.

[0003] Driven by high-power light sources, a large amount of heat will accumulate inside the projector, especially in the optical and mechanical parts. If this heat cannot be dissipated in a timely and effective manner, it will not only reduce the brightness and color saturation of the light source, affecting the picture quality, but also accelerate the aging of electronic components and shorten the service life of the projector. Traditional heat dissipation methods mostly rely on forced exhaust by cooling fans. However, the airflow generated by the fan when working is often unevenly distributed in the air channel, resulting in insufficient heat dissipation in local areas of key heat-generating components such as LCD screens and light sources, which has become a technical bottleneck that needs to be solved urgently. [Contents of the utility model]

[0004] In order to solve the technical problem that the uneven distribution of heat dissipation airflow of the existing projector leads to poor local heat dissipation effect, the utility model provides a projector.

[0005] The utility model solves the technical problem by providing a projector, which includes a shell and a projection component, a uniform wind structure and a heat dissipation fan arranged on the shell; a accommodating cavity is arranged in the shell, an air duct inlet connected to the accommodating cavity is opened on the shell, and the projection component is arranged in the accommodating cavity; the air inlet end of the uniform wind structure is connected to the air outlet of the heat dissipation fan, and the air outlet end of the uniform wind structure is connected to the air duct inlet.

[0006] Preferably, the wind uniformity structure includes a first connection part, a wind uniformity part and a second connection part connected in sequence, a plurality of wind uniformity teeth are arranged in an array on the wind uniformity part, the first connection part is connected to the air outlet of the cooling fan, and the second connection part is connected to the air duct inlet.

[0007] Preferably, the wind uniforming structure is detachably connected to the shell.

[0008] Preferably, when the uniform wind structure is installed on the shell, the first connecting portion presses the top of the cooling fan; and / or the air duct inlet is a protruding structure protruding outward from the shell, and when the uniform wind structure is installed on the shell, the second connecting portion presses the top surface of the protruding structure.

[0009] Preferably, the projection assembly includes a light source and an optical path assembly arranged corresponding to the light source, the optical path assembly includes a front mirror, a liquid crystal screen and a rear mirror arranged in sequence along a direction close to the light source, a first air duct is defined between the front mirror and the liquid crystal screen, a second air duct is defined between the liquid crystal screen and the rear mirror, and the air duct entrance, the first air duct and the second air duct are connected in sequence.

[0010] Preferably, a first turning portion is provided on the housing at a side corresponding to the optical path component away from the air duct entrance, and the first air duct and the second air duct are connected via the first turning portion.

[0011] Preferably, a focusing structure is also arranged between the light source and the optical path component, and a third air duct is also defined between the focusing structure, the light source and the shell. A second turning portion is arranged on the shell on the side of the optical path component away from the first turning portion, and the second air duct is connected to the third air duct through the second turning portion.

[0012] Preferably, a heat sink is further provided on the housing, and the heat sink is provided corresponding to the light source.

[0013] Preferably, the heat sink comprises a substrate, and a plurality of heat sink fins are arranged at intervals on a surface of the substrate facing away from the light source.

[0014] Preferably, the substrate is further provided with a through hole, and the third air duct is connected to at least a portion of the gaps between the heat dissipation fins and the outside through the through hole.

[0015] Compared with the prior art, the utility model provides a projector with the following advantages:

[0016] 1. A projector provided by an embodiment of the utility model is provided with a uniform wind structure between the cooling fan and the air duct inlet, so that the airflow blown by the cooling fan first passes through the uniform wind structure and then enters the accommodating cavity of the shell to dissipate the heat of the internal projection component, thereby making the airflow entering the accommodating cavity more evenly distributed, which can effectively solve the problem of uneven heat dissipation airflow distribution in the existing projector resulting in poor local heat dissipation effect; at the same time, by arranging the projection component in the shell, good sealing is ensured, which helps to prevent dust; by arranging the uniform wind structure outside the internal air duct to connect the cooling fan and the air duct inlet, the structure of the heat dissipation system can be simplified, the production difficulty can be reduced, and maintenance and cleaning can be facilitated.

[0017] 2. The array of uniform wind teeth on the uniform wind section of the utility model can significantly enhance the uniformity and guidance of the airflow. This design allows the airflow from the cooling fan to be more evenly dispersed to the entire air duct inlet, reducing the possibility of local overheating; at the same time, the uniform airflow reduces the generation of aerodynamic noise, which is conducive to reducing the working noise of the projector.

[0018] 3. The detachable connection between the air-distributing structure and the housing of the embodiment of the utility model provides convenience for maintenance and upgrading. Users can replace or clean the air-distributing structure alone without disassembling the entire projector, which improves maintenance efficiency. At the same time, it is also convenient to upgrade and replace different air-distributing structures.

[0019] 4. The compression design of the first connecting part and the second connecting part of the embodiment of the utility model not only completes the installation of the uniform wind structure, but also fixes the cooling fan by compression. The layout is compact, the space utilization efficiency is improved, and the installation process is simple. The compression design also ensures the close fit between the uniform wind structure and the cooling fan and the housing, avoids air leakage, and further optimizes the heat dissipation effect. Through such a tight connection, the air tightness of the projector can be improved, dust intrusion can be prevented, and the stability of the heat dissipation system can be ensured.

[0020] 5. The embodiment of the utility model uses the front mirror, LCD screen and rear mirror of the projection assembly to construct the air duct, which is conducive to the detailed layout of the optical path components. Combined with the connection design of the air duct, a comprehensive heat dissipation network is formed, so that the air flow near the heat source can flow smoothly, achieving the purpose of rapid heat dissipation. Such a design effectively controls the temperature around the optical path components, especially the LCD screen and the mirror, avoids the influence of thermal stress on optical performance, thereby ensuring the clarity and color reproduction of the image and improving the user experience.

[0021] 6. In the embodiment of the utility model, the introduction of the first turning part cleverly connects the first air duct and the second air duct, so that the airflow can continuously pass through the optical path component. This design optimizes the airflow path, reduces the airflow resistance, forms a smoother air path, and makes the heat dissipation process more efficient.

[0022] 7. The embodiment of the utility model realizes the setting of the heat dissipation air path between the light source, the optical path component and the heat sink through the design of the focusing structure, the second turning part and the third air duct, forming a comprehensive heat dissipation system, which not only enhances the heat dissipation of the light source, but also further balances the temperature rise of the whole machine, reduces energy consumption, and improves the overall energy utilization efficiency of the system.

[0023] 8. The arrangement of the heat sink in the embodiment of the utility model, especially the layout corresponding to the light source, directly dissipates heat from the main heat source, which can further improve the heat dissipation performance of the projector, effectively control the temperature of the light source, avoid light attenuation caused by overheating of the light source, ensure the lasting stability of the projection brightness and color, and extend the service life of the light source.

[0024] 9. The structural design of the substrate and the heat dissipation fins in the embodiment of the utility model accelerates the heat dissipation by increasing the surface area in contact with the air, thereby significantly improving the heat dissipation effect.

[0025] 10. The embodiment of the utility model also provides a perforation design on the substrate, which realizes the connection between the third air duct and the gap between the heat sink fins and the outside world, forming a three-dimensional heat dissipation channel. This design promotes the free flow of air, enhances the cooling effect on the heat sink fins, and further improves the heat dissipation performance; at the same time, the perforation design also helps to balance the internal pressure and optimize the overall operation of the heat dissipation system.

Brief Description of the Drawings

[0026] Figure 1 It is a structural schematic diagram of a projector provided by an embodiment of the utility model.

[0027] Figure 2 It is a cross-sectional view of a projector provided by an embodiment of the utility model.

[0028] Figure 3 The utility model provides a projector explosion Figure 1 .

[0029] Figure 4 The utility model provides a projector explosion Figure 2 .

[0030] Figure 5 It is a structural schematic diagram of a uniform wind structure of a projector provided in an embodiment of the utility model.

[0031] Figure 6 An exploded view of a shell of a projector provided by an embodiment of the utility model.

[0032] Figure 7 A schematic diagram of the internal structure of a projector provided by an embodiment of the utility model.

[0033] Figure 8 A schematic structural diagram of a projection assembly of a projector provided by an embodiment of the utility model.

[0034] Fig. 9 A schematic structural diagram of a heat sink of a projector provided by an embodiment of the utility model.

[0035] Description of the accompanying drawings:

[0036] 100. Projector;

[0037] 1. Shell; 11. Main body; 111. First turning part; 112. Third air duct; 12. Cover; 121. Air duct inlet; 122. Second turning part; 13. Accommodating chamber;

[0038] 2. Projection assembly; 21. Light source; 22. Optical path assembly; 221. Front mirror; 222. LCD screen; 223. Rear mirror;

[0039] 224, first air duct; 225, second air duct; 226, focusing structure;

[0040] 3. wind uniformity structure; 31. first connection part; 32. wind uniformity part; 321. wind uniformity teeth; 3211. wind guide slope; 33. second connection part; 34. fixing plate; 341. positioning notch;

[0041] 4. cooling fan; 5. heat sink; 51. substrate; 511. perforation; 52. cooling fins; 521. gap. [Specific implementation method]

[0042] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0043] It should be noted that the terms "first" and "second" and the like in the specification and claims of the present invention are used to distinguish different objects rather than to describe a specific order.

[0044] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0045] In the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0046] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0047] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0048] See also Figure 1 and Figure 2 The first embodiment of the utility model provides a projector 100, which includes a shell 1 and a projection component 2, a uniform wind structure 3 and a heat dissipation fan 4 arranged in the shell 1; a housing cavity 13 is arranged in the shell 1, and an air duct inlet 121 connected to the housing cavity 13 is opened on the shell 1, and the projection component 2 is arranged in the housing cavity 13; the air inlet end of the uniform wind structure 3 is connected to the air outlet of the heat dissipation fan 4, and the air outlet end of the uniform wind structure 3 is connected to the air duct inlet 121.

[0049] It can be understood that a projector 100 provided by an embodiment of the utility model is provided with a uniform wind structure 3 between the cooling fan 4 and the air duct inlet 121, so that the airflow blown by the cooling fan 4 first passes through the uniform wind structure 3 and then enters the accommodating cavity 13 of the shell 1 to dissipate the heat of the internal projection component 2, thereby making the airflow distribution entering the accommodating cavity 13 more uniform, which can effectively solve the problem of uneven heat dissipation airflow distribution in the existing projector 100 resulting in poor local heat dissipation effect; at the same time, by arranging the projection component 2 in the shell 1, good sealing is ensured, which helps to prevent dust; by arranging the uniform wind structure 3 outside the internal air duct to connect the cooling fan 4 and the air duct inlet 121, the structure of the heat dissipation system can be simplified, the production difficulty can be reduced, and maintenance and cleaning can be facilitated.

[0050] For further information, see Figure 3 The housing 1 includes a main body 11 and a cover body 12 . The main body 11 defines a receiving cavity 13 . The cover body 12 is disposed on the top of the main body 11 to cover the receiving cavity 13 .

[0051] Further, please combine Figures 4 to 6The wind uniformity structure 3 includes a first connection part 31, a wind uniformity part 32 and a second connection part 33 connected in sequence. A plurality of wind uniformity teeth 321 are arranged in an array on the wind uniformity part 32. The first connection part 31 is connected to the air outlet of the cooling fan 4, and the second connection part 33 is connected to the air duct inlet 121.

[0052] It can be understood that the array of uniform wind teeth 321 on the uniform wind portion 32 of the embodiment of the utility model can significantly enhance the uniformity and guidance of the airflow. This design allows the airflow from the cooling fan 4 to be more evenly distributed to the entire air duct inlet 121, reducing the possibility of local overheating; at the same time, the uniform airflow reduces the generation of aerodynamic noise, which is conducive to reducing the working noise of the projector 100.

[0053] Furthermore, a wind guide slope 3211 is provided on one side of the wind leveling tooth 321 close to the cooling fan 4. This design can ensure that the airflow can achieve the most efficient kinetic energy conversion when passing through the wind leveling tooth 321, which is not only uniform but also can minimize the noise generated by turbulence. In addition, the surface of the wind leveling tooth 321 is smoothed to reduce wind resistance, making the airflow smoother and further improving the heat dissipation efficiency.

[0054] Furthermore, the first connection portion 31 , the wind uniforming portion 32 and the second connection portion 33 are all in an arch shape, that is, the wind uniforming structure 3 is in an arch shape, so that when the wind uniforming structure 3 is installed on the cover body 12 , it cooperates with the cover body 12 to form an air-guiding connection channel.

[0055] Furthermore, the wind uniforming structure 3 is detachably connected to the shell 1 .

[0056] It can be understood that the detachable connection between the air-distributing structure 3 and the housing 1 of the embodiment of the utility model provides convenience for maintenance and upgrading. The user can replace or clean the air-distributing structure 3 alone without disassembling the entire projector 100, which improves the maintenance efficiency. At the same time, it is also convenient to upgrade and replace different air-distributing structures 3.

[0057] Specifically, a fixing plate 34 is provided on the wind uniformity structure 3, and the wind uniformity structure 3 is installed on the cover body 12 through the fixing plate 34; specifically, the fixing plate 34 and the cover body 12 are detachably connected through a screw member.

[0058] Furthermore, at least one fixing plate 34 is provided with a positioning notch 341 , and the positioning notch 341 is matched with at least a portion of the outer contour of the heat dissipation fan 4 , so as to assist in positioning when installing the air uniformity structure 3 .

[0059] Furthermore, when the uniform wind structure 3 is installed on the shell 1, the first connecting portion 31 presses the top of the cooling fan 4; and / or the air duct inlet 121 is a protruding structure protruding outward from the shell 1, and when the uniform wind structure 3 is installed on the shell 1, the second connecting portion 33 presses the top surface of the protruding structure.

[0060] It can be understood that the compression design of the first connection part 31 and the second connection part 33 of the embodiment of the utility model not only completes the installation of the uniform wind structure 3, but also completes the fixation of the cooling fan 4 by compression, with a compact layout, improved space utilization efficiency and simple installation process; the compression design also ensures a close fit between the uniform wind structure 3 and the cooling fan 4 and the housing 1, avoiding air leakage and further optimizing the heat dissipation effect; through such a close connection, the air tightness of the projector 100 can be improved, dust intrusion can be prevented, and the stability of the heat dissipation system can also be ensured.

[0061] During installation, first position the cooling fan 4 to the corresponding position on the cover body 12, define an installation slot between the air outlet of the cooling fan 4 and the air duct inlet 121 of the cover body 12, press the wind uniformity structure 3 into the installation slot from top to bottom until the first connection part 31 and the second connection part 33 press the top outer surfaces of the cooling fan 4 and the air duct inlet 121 respectively, and then complete the fixation between the wind uniformity structure 3 and the cover body 12 by means of screws.

[0062] Furthermore, the first connection portion 31 is matched with the air outlet of the heat dissipation fan 4, and the second connection portion 33 is matched with the air duct inlet 121. It can be understood that by adding a separate air uniformity structure 3 as a transitional connection piece, the model size of the heat dissipation fan 4 and the air duct inlet 121 of the cover body 12 do not have to be completely matched, and the corresponding air uniformity structure 3 can be used according to the needs.

[0063] Specifically, in this embodiment, the length direction is the arrangement direction of the wind uniforming teeth 321, and the lengths of the first connection portion 31, the wind uniforming portion 32, and the second connection portion 33 are increased in sequence. This design allows the heat dissipation fan 4 with a smaller air outlet to be matched with the air duct inlet 121 of the cover body 12. Based on the same principle, the heat dissipation fan 4 with a larger air outlet can also be matched with the air duct inlet 121 of the cover body 12, which will not be described in detail here.

[0064] As an optional implementation, the heat dissipation fan 4 is a turbo fan, with the air inlet facing the top surface and the air outlet facing the side and aligned with the air duct inlet 121. This design can facilitate the design and installation of the wind uniformity structure 3.

[0065] Further, please combine Figure 2 , Figure 7 and Figure 8The projection assembly 2 includes a light source 21 and an optical path assembly 22 arranged corresponding to the light source 21. The optical path assembly 22 includes a front mirror 221, a liquid crystal screen 222 and a rear mirror 223 arranged along a direction close to the light source 21. A first air duct 224 is defined between the front mirror 221 and the liquid crystal screen 222. A second air duct 225 is defined between the liquid crystal screen 222 and the rear mirror 223. The air duct inlet 121, the first air duct 224 and the second air duct 225 are connected in sequence.

[0066] It can be understood that the embodiment of the utility model uses the front mirror 221, the LCD screen 222 and the rear mirror 223 of the projection assembly 2 to construct the air duct, which is conducive to the detailed layout of the optical path assembly 22, and combined with the connection design of the air duct, a comprehensive heat dissipation network is formed, so that the airflow near the heat source can flow smoothly, achieving the purpose of rapid heat dissipation. Such a design effectively controls the temperature around the optical path assembly 22, especially the LCD screen 222 and the mirror, avoids the influence of thermal stress on optical performance, thereby ensuring the clarity and color reproduction of the image, and improving the user experience.

[0067] Furthermore, a first turning portion 111 is provided on the housing 1 at a side of the optical path component 22 away from the air duct inlet 121 , and the first air duct 224 and the second air duct 225 are connected via the first turning portion 111 .

[0068] It can be understood that in the embodiment of the utility model, the introduction of the first turning portion 111 cleverly connects the first air duct 224 and the second air duct 225, so that the airflow can continuously pass through the optical path component 22. This design optimizes the airflow path, reduces airflow resistance, forms a smoother air path, and makes the heat dissipation process more efficient.

[0069] Specifically, the first turning portion 111 is an arc-shaped air guide groove.

[0070] Furthermore, a focusing structure 226 is arranged between the light source 21 and the optical path component 22, and a third air duct 112 is defined between the focusing structure 226, the light source 21 and the shell 1. A second turning portion 122 is arranged on the side of the shell 1 away from the first turning portion 111 of the optical path component 22, and the second air duct 225 is connected to the third air duct 112 through the second turning portion 122.

[0071] It can be understood that through the design of the focusing structure 226, the second turning part 122 and the third air duct 112, the heat dissipation air path setting between the light source 21, the optical path component 22 and the heat sink 5 is realized, forming a comprehensive heat dissipation system, which not only enhances the heat dissipation of the light source 21, but also further balances the temperature rise of the whole machine, reduces energy consumption, and improves the overall energy utilization efficiency of the system.

[0072] Specifically, in this embodiment, the light focusing structure 226 includes a light focusing bucket.

[0073] Specifically, in this embodiment, the second turning portion 122 is an arc-shaped air guide groove.

[0074] For further information, see Fig. 9 A heat sink 5 is also provided on the housing 1 , and the heat sink 5 is provided corresponding to the light source 21 .

[0075] It can be understood that the setting of the heat sink 5, especially the layout corresponding to the light source 21, directly dissipates heat from the main heat source, which can further improve the heat dissipation performance of the projector 100, effectively control the temperature of the light source 21, avoid light attenuation caused by overheating of the light source 21, ensure the long-term stability of the projection brightness and color, and extend the service life of the light source 21.

[0076] Furthermore, the heat sink 5 includes a substrate 51 , and a plurality of heat sink fins 52 are arranged at intervals on a surface of the substrate 51 facing away from the light source 21 .

[0077] It can be understood that by increasing the surface area in contact with the air, the heat dissipation is accelerated, so that the heat dissipation effect is significantly improved.

[0078] Furthermore, a through hole 511 is further provided on the base plate 51 , and the third air duct 112 is connected to at least a portion of the gaps 521 between the heat dissipation fins 52 and the outside through the through hole 511 .

[0079] It can be understood that the perforation 511 design realizes the connection between the third air duct 112 and the gap 521 between the heat sink fins 52 and the outside world, forming a three-dimensional heat dissipation channel. This design promotes the free flow of air, enhances the cooling effect on the heat sink fins 52, and further improves the heat dissipation performance; at the same time, the perforation 511 design also helps to balance the internal pressure and optimize the overall operation of the heat dissipation system.

[0080] For details, please combine Figures 1 to 9 When the projector 100 provided by the embodiment of the utility model is working, the heat dissipation fan 4 is started, and the heat dissipation airflow enters from the air inlet of the heat dissipation fan 4 and then enters into the uniform wind structure 3 from the air outlet of the heat dissipation fan 4. The heat dissipation airflow is evenly divided by the uniform wind teeth 321 at the uniform wind portion 32 of the uniform wind structure 3, and then enters into the accommodating chamber 13 from the air duct inlet 121; and flows through the first air duct 224, the first turning portion 111, the second air duct 225, the second turning portion 122 and the third turning portion in the accommodating chamber 13 in sequence, and finally leaves the accommodating chamber 13 from the through hole 511 of the heat dissipation plate 5. When the heat dissipation airflow flows through the first air duct 224, the front mirror 221 and the liquid crystal screen 222 are cooled; when the heat dissipation airflow flows through the second air duct 225, the liquid crystal screen 222 and the rear mirror 223 are cooled; when the heat dissipation airflow flows through the third air duct 112, the focusing structure 226 and the light source 21 are cooled; finally, when leaving from the through hole 511, the heat on the heat dissipation plate 5 can be taken away.

[0081] Compared with the prior art, the utility model provides a projector with the following advantages:

[0082] 1. A projector provided by an embodiment of the utility model is provided with a uniform wind structure between the cooling fan and the air duct inlet, so that the airflow blown by the cooling fan first passes through the uniform wind structure and then enters the accommodating cavity of the shell to dissipate the heat of the internal projection component, thereby making the airflow entering the accommodating cavity more evenly distributed, which can effectively solve the problem of uneven heat dissipation airflow distribution in the existing projector resulting in poor local heat dissipation effect; at the same time, by arranging the projection component in the shell, good sealing is ensured, which helps to prevent dust; by arranging the uniform wind structure outside the internal air duct to connect the cooling fan and the air duct inlet, the structure of the heat dissipation system can be simplified, the production difficulty can be reduced, and maintenance and cleaning can be facilitated.

[0083] 2. The array of uniform wind teeth on the uniform wind section of the utility model can significantly enhance the uniformity and guidance of the airflow. This design allows the airflow from the cooling fan to be more evenly dispersed to the entire air duct inlet, reducing the possibility of local overheating; at the same time, the uniform airflow reduces the generation of aerodynamic noise, which is conducive to reducing the working noise of the projector.

[0084] 3. The detachable connection between the air-distributing structure and the housing of the embodiment of the utility model provides convenience for maintenance and upgrading. Users can replace or clean the air-distributing structure alone without disassembling the entire projector, which improves maintenance efficiency. At the same time, it is also convenient to upgrade and replace different air-distributing structures.

[0085] 4. The compression design of the first connecting part and the second connecting part of the embodiment of the utility model not only completes the installation of the uniform wind structure, but also fixes the cooling fan by compression. The layout is compact, the space utilization efficiency is improved, and the installation process is simple. The compression design also ensures the close fit between the uniform wind structure and the cooling fan and the housing, avoids air leakage, and further optimizes the heat dissipation effect. Through such a tight connection, the air tightness of the projector can be improved, dust intrusion can be prevented, and the stability of the heat dissipation system can be ensured.

[0086] 5. The embodiment of the utility model uses the front mirror, LCD screen and rear mirror of the projection assembly to construct the air duct, which is conducive to the detailed layout of the optical path components. Combined with the connection design of the air duct, a comprehensive heat dissipation network is formed, so that the air flow near the heat source can flow smoothly, achieving the purpose of rapid heat dissipation. Such a design effectively controls the temperature around the optical path components, especially the LCD screen and the mirror, avoids the influence of thermal stress on optical performance, thereby ensuring the clarity and color reproduction of the image and improving the user experience.

[0087] 6. In the embodiment of the utility model, the introduction of the first turning part cleverly connects the first air duct and the second air duct, so that the airflow can continuously pass through the optical path component. This design optimizes the airflow path, reduces the airflow resistance, forms a smoother air path, and makes the heat dissipation process more efficient.

[0088] 7. The embodiment of the utility model realizes the setting of the heat dissipation air path between the light source, the optical path component and the heat sink through the design of the focusing structure, the second turning part and the third air duct, forming a comprehensive heat dissipation system, which not only strengthens the heat dissipation of the light source, but also further balances the temperature rise of the whole machine, reduces energy consumption, and improves the overall energy utilization efficiency of the system.

[0089] 8. The arrangement of the heat sink in the embodiment of the utility model, especially the layout corresponding to the light source, directly dissipates heat from the main heat source, which can further improve the heat dissipation performance of the projector, effectively control the temperature of the light source, avoid light attenuation caused by overheating of the light source, ensure the lasting stability of the projection brightness and color, and extend the service life of the light source.

[0090] 9. The structural design of the substrate and the heat dissipation fins in the embodiment of the utility model accelerates the heat dissipation by increasing the surface area in contact with the air, thereby significantly improving the heat dissipation effect.

[0091] 10. The embodiment of the utility model also provides a perforation design on the substrate, which realizes the connection between the third air duct and the gap between the heat sink fins and the outside world, forming a three-dimensional heat dissipation channel. This design promotes the free flow of air, enhances the cooling effect on the heat sink fins, and further improves the heat dissipation performance; at the same time, the perforation design also helps to balance the internal pressure and optimize the overall operation of the heat dissipation system.

[0092] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A projector, characterized in that: The projector comprises a housing and a projection assembly, a wind uniformity structure and a heat dissipation fan arranged on the housing; The housing is provided with a receiving cavity, the housing is provided with an air duct inlet connected to the receiving cavity, and the projection assembly is arranged in the receiving cavity; The air inlet end of the uniform wind structure is connected to the air outlet of the heat dissipation fan, and the air outlet end of the uniform wind structure is connected to the air duct inlet.

2. The projector according to claim 1, wherein: The wind uniformity structure includes a first connection part, a wind uniformity part, and a second connection part which are connected in sequence. A plurality of wind uniformity teeth are arranged in an array on the wind uniformity part. The first connection part is connected to the air outlet of the cooling fan, and the second connection part is connected to the air duct inlet.

3. The projector according to claim 2, characterized in that: The wind uniformity structure is detachably connected to the shell.

4. The projector according to claim 2, wherein: When the uniform wind structure is installed on the shell, the first connecting portion presses the top of the cooling fan; and / or the air duct inlet is a protruding structure protruding outward from the shell, and when the uniform wind structure is installed on the shell, the second connecting portion presses the top surface of the protruding structure.

5. The projector according to claim 1, wherein: The projection assembly includes a light source and an optical path assembly arranged corresponding to the light source, the optical path assembly includes a front mirror, a liquid crystal screen and a rear mirror arranged in sequence along a direction close to the light source, a first air duct is defined between the front mirror and the liquid crystal screen, a second air duct is defined between the liquid crystal screen and the rear mirror, and the air duct entrance, the first air duct and the second air duct are connected in sequence.

6. The projector according to claim 5, characterized in that: A first turning portion is provided on the housing at a side corresponding to the optical path component away from the air duct entrance, and the first air duct and the second air duct are connected via the first turning portion.

7. The projector according to claim 6, characterized in that: A focusing structure is also arranged between the light source and the optical path component, and a third air duct is also defined between the focusing structure, the light source and the shell. A second turning portion is arranged on the shell on a side of the optical path component away from the first turning portion, and the second air duct is connected to the third air duct via the second turning portion.

8. The projector according to claim 7, characterized in that: The housing is also provided with a heat sink, and the heat sink is provided corresponding to the light source.

9. The projector according to claim 8, characterized in that: The heat sink comprises a substrate, and a plurality of heat sink fins are arranged at intervals on a side of the substrate facing away from the light source.

10. The projector according to claim 9, characterized in that: The base plate is also provided with a through hole, and the third air duct is connected to at least a portion of the gaps between the heat dissipation fins and the outside through the through hole.

Images