A projector

Abstract

The application provides a projector, comprising: a shell provided with a mounting cavity and a first heat dissipation air outlet; an inner fan arranged in the mounting cavity and facing the first heat dissipation air outlet; an outer fan arranged at the first heat dissipation air outlet; and a first heat sink arranged in the mounting cavity, wherein the inner fan and the outer fan are located on the upper and lower sides of the first heat sink along the direction of gravity; and the first heat sink comprises a partition plate arranged between the inner fan and the outer fan to hinder air exchange between the inner fan and the outer fan, and an included angle between the partition plate and the direction of gravity is greater than 0 degrees and less than 180 degrees.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a projector. Background Technology

[0002] An LCD projector is an instrument that removes the backlight portion of an LCD panel and uses a high-power backlight and a focusing lens to project light onto the LCD panel. Because the LCD panel is translucent, the light passes through and projects the image onto a screen or wall, where it is then focused by a lens. Currently, the heat sinks in projectors often have limited airflow, resulting in poor heat dissipation and affecting the instrument's lifespan. Utility Model Content

[0003] This invention provides a projector to solve the problem of poor heat dissipation caused by insufficient airflow in the radiator.

[0004] To achieve the above objectives, this application proposes a projector comprising: The housing has a mounting cavity and a first heat dissipation vent. An internal fan is disposed inside the mounting cavity and faces the first heat dissipation vent; An external fan is installed at the first heat dissipation vent; and, A first radiator is disposed within the mounting cavity, and along the direction of gravity, the inner fan and the outer fan are located on the upper and lower sides of the first radiator; The first radiator includes a partition plate, which is disposed between the inner fan and the outer fan to impede airflow exchange between the inner fan and the outer fan. The partition plate has an angle greater than 0 degrees and less than 180 degrees with respect to the direction of gravity.

[0005] Optionally, in one embodiment, the partition divides the mounting cavity into an outer circulation cavity and an inner circulation cavity. The first heat sink further includes a plurality of spaced first heat sinks and a plurality of spaced second heat sinks connected to opposite sides of the partition. The plurality of first heat sinks are located in the outer circulation cavity, and the plurality of second heat sinks are located in the inner circulation cavity. The first heat dissipation vent communicates with the outer circulation cavity.

[0006] Optionally, in one embodiment, a plurality of first heat sinks and a plurality of second heat sinks are arranged in a centrally symmetrical manner with respect to the geometric center of the partition.

[0007] Optionally, in one embodiment, the first heat sink and the second heat sink are both right-angled triangles, and the hypotenuses of the first heat sink and the second heat sink are both located on the partition. Alternatively, both the first heat sink and the second heat sink are right-angled trapezoids, with the inclined sides of both the first and second heat sinks located on the partition.

[0008] Optionally, in one embodiment, a plurality of first heat dissipation plates, the partition plate, and the inner wall of the outer circulation cavity enclose to form a first flow channel. Along the direction of the first flow channel approaching the outer fan, the first flow channel gradually increases in size, and the air inlet side of the outer fan is disposed towards the first flow channel. A plurality of second heat dissipation plates, the partition plate, and the inner wall of the inner circulation cavity enclose to form a second flow channel. Along the direction of the second flow channel approaching the inner fan, the second flow channel gradually increases in size, and the air inlet side of the inner fan is disposed towards the second flow channel.

[0009] Optionally, in one embodiment, a fixing plate is detachably connected to the inner wall of the mounting cavity. The fixing plate is disposed on the side of the second heat sink away from the partition. The fixing plate and the inner wall of the mounting cavity jointly fix the first heat sink. The fixing plate is provided with a second air inlet communicating with one end of the second guide channel. One side of the fixing plate and the inner wall of the mounting cavity enclose a second air outlet communicating with the other end of the second guide channel.

[0010] Optionally, in one embodiment, the housing includes a first housing and a second housing that are detachably connected, the first housing and the second housing forming the mounting cavity, the fixing plate being detachably connected to the side of the first housing facing the second housing, the first housing being provided with the first heat sink, and the opposing inner walls of the second housing being provided with limit grooves, one end of each limit groove facing the fixing plate; The projector also includes a lens, with both ends of the lens located in the two limiting grooves, and the fixing plate fitting into the opening of each limiting groove.

[0011] Optionally, in one embodiment, the internal fan is located inside the first housing, and the internal fan is used to circulate airflow within the first housing and the second housing.

[0012] Optionally, in one embodiment, the system further includes a lens assembly, wherein the external fan, the first radiator, the internal fan, and the lens assembly are arranged side by side in sequence.

[0013] Optionally, in one embodiment, the projector further includes a light source assembly and a second heat sink, the light source assembly being disposed in the mounting cavity, the second heat sink being located outside the housing and close to the light source assembly, and the air outlet side of the external fan being disposed towards the second heat sink.

[0014] The projector provided in this application changes the airflow angle to the external and internal fans by making the partition form an angle with the direction of gravity, thereby reducing wind resistance, increasing the airflow through the first radiator, and improving the heat dissipation effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a structural schematic diagram of the projector from one of the viewpoints in this application; Figure 2 This is a structural schematic diagram of the projector from another perspective. Figure 3 This is a bottom view of the projector in this application; Figure 4 For along Figure 3 A sectional view obtained from one of the three-dimensional perspectives using section line II; Figure 5 For along Figure 3 Another sectional view from a three-dimensional perspective obtained by section line II; Figure 6 This is an exploded view of the projector in this application; Figure 7 This is a schematic diagram of the internal structure of the first housing in this application; Figure 8 This is a side view of the first heat sink in this application; Figure 9 This is a three-dimensional structural diagram of the first heat sink in this application.

[0017] Explanation of icon numbers: 1. Housing; 11. Mounting cavity; 111. External circulation cavity; 112. Internal circulation cavity; 12. First heat dissipation vent; 13. Fixing plate; 131. Second air inlet; 2. Internal fan; 3. External fan; 4. First radiator; 41. Baffle plate; 42. First heat dissipation plate; 421. First airflow channel; 43. Second heat dissipation plate; 431. Second airflow channel; 5. Lens assembly; 6. Light source assembly; 61. LED light source; 62. Light chamber; 7. Second radiator; 8. Imaging assembly; 81. Front Fresnel lens; 82. Heat shield; 83. LCD screen; 84. Rear Fresnel lens; 85. Reflector.

[0018] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model.

[0020] In the description of this application, it should be understood that the terms "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a unique orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0023] The use of "applies to" or "configured to" in this application implies open and inclusive language, which does not exclude the applicability to or configuration to devices performing additional tasks or steps. Additionally, the use of "based on" implies openness and inclusivity, because processes, steps, calculations, or other actions "based on" one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0024] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0025] In this application, "arranged side by side" means that multiple technical features are arranged in the order in which they appear in a specific statement. For example, "the external fan, the first radiator, the internal fan and the lens assembly are arranged side by side" means that the external fan, the first radiator, the internal fan and the lens assembly are arranged in the same direction.

[0026] This application provides a projector to solve the problem of poor heat dissipation caused by insufficient airflow in the radiator. The following description will be provided in conjunction with the accompanying drawings.

[0027] In the embodiments of this application, such as Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, the projector includes: The housing 1 is provided with a mounting cavity 11 and a first heat dissipation vent 12. An internal fan 2 is installed inside the mounting cavity 11 and faces the first heat dissipation vent 12; External fan 3 is located at the first heat dissipation vent 12; and, The first radiator 4 is disposed within the mounting cavity 11. Along the direction of gravity, the inner fan 2 and the outer fan 3 are located on the upper and lower sides of the first radiator 4. The first radiator 4 includes a partition 41, which is located between the inner fan 2 and the outer fan 3 to obstruct airflow exchange between the inner fan 2 and the outer fan 3. The partition 41 has an angle greater than 0 degrees and less than 180 degrees with the direction of gravity.

[0028] It should be noted that the external fan 3 is located below the first radiator 4, and the internal fan 2 is located above the first radiator 4.

[0029] It is understandable that when airflow passes through the partition 41 and flows towards the inner fan 2 or the outer fan 3, the inclined partition 41 can reduce wind resistance, thereby increasing airflow and improving the heat exchange efficiency of the first radiator 4, thus improving the heat exchange effect and solving the problem of shortened projector lifespan caused by poor heat exchange. Alternatively, the airflow from the outer fan 3 or the inner fan 2 can flow towards the partition 41, be guided by the partition 41, and then flow out in a direction perpendicular to the direction from the outer fan 3 to the inner fan 2.

[0030] In some embodiments, such as Figure 4 and Figure 5 As shown, the partition 41 divides the mounting cavity 11 into an outer circulation cavity 111 and an inner circulation cavity 112. The first heat sink 4 also includes a plurality of spaced first heat sinks 42 and a plurality of spaced second heat sinks 43 connected to opposite sides of the partition 41. The plurality of first heat sinks 42 are located in the outer circulation cavity 111, and the plurality of second heat sinks 43 are located in the inner circulation cavity 112. The first heat dissipation vent 12 is connected to the outer circulation cavity 111.

[0031] It should be noted that, as the name suggests, the external circulation chamber 111 refers to the space through which external airflow passes for the projector; the internal circulation chamber 112 refers to the space through which internal airflow passes for the projector. The opposite sides of the partition 41 refer to the opposite sides in the horizontal direction.

[0032] It is understandable that the heat exchange area of ​​the first radiator 4 can be increased and the heat dissipation efficiency improved by using multiple first heat dissipation plates 42 and multiple second heat dissipation plates 43. The side wall of the external circulation cavity 111 is provided with an external air inlet to allow external airflow from the projector to flow into the external circulation cavity 111.

[0033] In some embodiments, such as Figure 5 and Figure 6 As shown, with respect to the geometric center of the partition 41, a plurality of first heat dissipation plates 42 and a plurality of second heat dissipation plates 43 are arranged symmetrically in a one-to-one correspondence.

[0034] It should be noted that the geometric center of the partition 41 refers to the center when the partition 41 has a regular shape. This center is located at the exact midpoint of the length direction, the exact midpoint of the width direction, and the exact midpoint of the height direction of the partition 41. Central symmetry means that after each first heat sink 42 is rotated 180° around the geometric center, there exists a second heat sink 43 that can coincide with it.

[0035] It is understandable that by centrally symmetrically arranging the first heat sink 42 and the second heat sink 43, the airflow on both sides of the partition 41 can be kept as consistent as possible, and by adjusting the tilt angle of the partition 41, the airflow on both sides of the partition 41 can be increased simultaneously.

[0036] For example, a plurality of first heat sinks 42 are arranged at relative intervals in a direction perpendicular to the direction from the external fan 3 to the internal fan 2, that is, at relative intervals in a horizontal direction, so that the space between adjacent first heat sinks 42 faces the external fan 3. Similarly, a plurality of second heat sinks 43 are arranged at relative intervals in a direction perpendicular to the direction from the external fan 3 to the internal fan 2, so that the space between adjacent second heat sinks 43 faces the external fan 3.

[0037] In some embodiments, such as Figure 8 and Figure 9 As shown, the shapes of the first heat sink 42 and the second heat sink 43 are both right-angled triangles, and the hypotenuses of the first heat sink 42 and the second heat sink 43 are both located on the partition plate 41. Alternatively, the shape of the first heat sink 42 and the shape of the second heat sink 43 are both right trapezoids, and the inclined waist of the first heat sink 42 and the inclined waist of the second heat sink 43 are both located on the partition 41.

[0038] It should be noted that the first heat sink 42, which is a right-angled triangle, has two perpendicular straight sides and a hypotenuse inclined to the two straight sides. Therefore, the hypotenuse of the first heat sink 42 refers to the hypotenuse of the right-angled triangle. Similarly, the hypotenuse of the second heat sink 43, which is also a right-angled triangle, is also mentioned.

[0039] The first heat sink 42, which is a right trapezoid, has a straight leg perpendicular to the two bases and an inclined leg sloping towards the two bases. Therefore, the inclined leg of the first heat sink 42 refers to the inclined leg of the right trapezoid. Similarly, the inclined leg of the second heat sink 43, which is a right triangle, is also described.

[0040] It is understandable that by setting the first heat sink 42 and the second heat sink 43 into the above-described shapes, the first heat sink 4 has a straight quadrangular prism structure.

[0041] In this configuration, the straight edge of the first heat sink 42 faces the external air inlet of the external circulation chamber 111, and the other straight edge of the first heat sink 42 faces the external air inlet of the external circulation chamber 111 (i.e., the first heat dissipation vent 12), with the external air outlet facing the air inlet side of the external fan 3. Alternatively, the straight edge of the first heat sink 42 can be replaced with the straight waist of a first heat sink 42 with a right-angled trapezoidal shape, and the other straight edge of the first heat sink 42 can be replaced with the sloping waist of a first heat sink 42 with a right-angled trapezoidal shape. In this case, the airflow flowing in from the external air inlet forms an angle greater than 90° with the partition 41 when it flows towards the partition 41. This angle can reduce wind resistance and better guide the airflow towards the external fan 3. Alternatively, the air outlet side of the external fan 3 can also be positioned facing the first heat dissipation vent 12.

[0042] The straight edge of the second heat sink 43 faces the outer air inlet of the outer circulation chamber 111, and the other straight edge of the second heat sink 43 faces the inner air inlet of the inner circulation chamber 112. The inner air outlet faces the air inlet side of the inner fan 2. Alternatively, the straight edge of the second heat sink 43 can be replaced with the straight waist of the second heat sink 43 having a right-angled trapezoidal shape, and the other straight edge of the second heat sink 43 can be replaced with the sloping waist of the second heat sink 43 having a right-angled trapezoidal shape. In this case, the airflow flowing in from the inner air inlet forms an angle greater than 90° with the partition 41 when it flows towards the partition 41. This angle can reduce wind resistance and better guide the airflow to the outer fan 3. Alternatively, the air outlet side of the inner fan 2 can also be set to face the second heat sink vent.

[0043] Furthermore, in some embodiments, such as Figure 8 and Figure 9 As shown, the angle between the partition 41 and the direction from the external fan 3 to the internal fan 2 is greater than or equal to 0° and less than 43.7°.

[0044] It is understandable that when the included angle is within the above range, not only can the sealing between the external circulation chamber 111 and the internal circulation chamber 112 be guaranteed, but the airflow between the adjacent first heat dissipation plate 42 and between the adjacent second heat dissipation plate 43 can also be increased. Compared with the case where the partition plate 41 and the external fan 3 are arranged parallel to the direction of the internal fan 2, the overall airflow of the first heat dissipation 4 is increased, and the heat dissipation efficiency is improved.

[0045] Furthermore, due to the different thicknesses of the partition 41, the angle between the partition 41 and the direction from the external fan 3 to the internal fan 2 can be further increased without affecting the sealing between the internal circulation chamber 112 and the external circulation chamber 111. The angle can be infinitely close to 45°.

[0046] The angle between the partition 41 and the direction from the external fan 3 to the internal fan 2 can also be selected from: 10°, 20°, 25°, 30°, 40°, 43.7° or any two of the above values.

[0047] In some embodiments, such as Figure 9 As shown, multiple first heat dissipation plates 42, partitions 41, and the inner wall of the external circulation cavity 111 enclose to form a first guide channel 421. Along the direction of the first guide channel 421 near the external fan 3, the first guide channel 421 gradually increases in size, and the air inlet side of the external fan 3 is set towards the first guide channel 421. Multiple second heat dissipation plates 43, partitions 41, and the inner wall of the internal circulation cavity 112 enclose to form a second guide channel 431. Along the direction of the second guide channel 431 near the internal fan 2, the second guide channel 431 gradually increases in size, and the air inlet side of the internal fan 2 is set towards the second guide channel 431.

[0048] It should be noted that the direction of gas flow in the first guide channel 421 is closer to the external fan 3, and the direction of gas flow in the second guide channel 431 is closer to the internal fan 2.

[0049] Understandably, based on the inclined setting of the partition 41, the gradually increasing first guide channel 421 and second guide channel 431 further increase the airflow through the first radiator 4 and improve the heat dissipation effect.

[0050] In some embodiments, such as Figure 6 and Figure 7 As shown, a fixing plate 13 is detachably connected to the inner wall of the mounting cavity 11. The fixing plate 13 is located on the side of the second heat sink 43 away from the partition plate 41. The fixing plate 13 and the inner wall of the mounting cavity 11 together fix the first heat sink 4. The fixing plate 13 is provided with a second air inlet 131 that communicates with one end of the second guide channel 431. One side of the fixing plate 13 and the inner wall of the mounting cavity 11 enclose a second air outlet that communicates with the other end of the second guide channel 431.

[0051] It should be noted that detachable connections include known connection methods such as bolt connections, snap-fit ​​connections, pin connections, and adhesive bonding.

[0052] It is understood that the second air inlet 131 is the inner air inlet of the inner circulation cavity 112 mentioned in other embodiments, and the second air outlet is the inner air outlet of the inner circulation cavity 112 mentioned in other embodiments. After the first radiator 4 is installed in the mounting cavity 11, the partition 41 can be used to form a mutually sealed inner circulation cavity 112 and outer circulation cavity 111. Then, the fixing plate 13 is installed on the inner wall of the mounting cavity 11 to fix the first radiator 4.

[0053] In some embodiments, such as Figure 6 and Figure 7As shown, the housing 1 includes a first housing and a second housing that are detachably connected. The first housing and the second housing together form an installation cavity 11. The fixing plate 13 is detachably connected to the side of the first housing facing the second housing. The first housing is provided with a first heat sink 4. The inner walls of the opposite sides of the second housing are provided with limit grooves, and one end of each limit groove faces the fixing plate 13. The projector also includes a lens with its two ends located in two limiting grooves, and a fixing plate 13 fitting into the opening of each limiting groove.

[0054] It should be noted that detachable connections include known connection methods such as bolt connections, snap-fit ​​connections, pin connections, and adhesive bonding. The specific detachable connection method used here may be the same as or different from that in other embodiments. The lens may refer to the front Fresnel lens 81 or the rear Fresnel lens 84 commonly used in projectors.

[0055] Understandably, the fixing plate 13 not only serves to fix the first heat sink 4, but also works with the wall of the limiting groove to limit the lens, preventing the lens from sliding into the first housing along the limiting groove when the projector tilts.

[0056] In some embodiments, such as Figure 5 As shown, the internal fan 2 is located inside the first housing, and the internal fan 2 is used to circulate the airflow between the first housing and the second housing.

[0057] It is understandable that, compared to placing the internal fan 2 on the outside of the second housing away from the first housing and communicating with the mounting cavity 11, placing the internal fan 2 inside the first housing for the first radiator 4 can reduce the size of the projector in the direction of the second housing pointing towards the first housing.

[0058] In some embodiments, such as Figure 4 and Figure 5 As shown, the projector also includes a lens assembly 5, an external fan 3, a first radiator 4, an internal fan 2, and the lens assembly 5 arranged side by side.

[0059] Understandably, this design makes the projector structure more compact, further reducing its size.

[0060] In some embodiments, such as Figure 5 As shown, the projector also includes a light source assembly 6 and a second heat sink 7. The light source assembly 6 is disposed in the mounting cavity 11, and the second heat sink 7 is located outside the housing 1 and close to the light source assembly 6. The air outlet side of the external fan 3 is disposed towards the second heat sink 7.

[0061] It is understandable that the second heat sink 7 is used to dissipate heat from the light source assembly 6, while the external fan 3 is used to accelerate the airflow speed on the surface of the second heat sink 7, thereby improving the heat dissipation effect of the second heat sink 7.

[0062] For example, the second radiator 7 includes a plurality of spaced third heat dissipation plates, with the space between adjacent third heat dissipation plates facing the external fan 3.

[0063] For example, the light source assembly 6 includes an LED light source 61 and a light chamber 62. The LED light source 61 emits light into the light chamber 62, and the light chamber 62 focuses the large-angle light emitted by the LED light source 61 and delivers it to the imaging assembly 8. The shape of the light chamber 62 can be approximately a square pyramid or a cone, etc.

[0064] In some embodiments, such as Figure 4 As shown, the projector also includes an imaging assembly 8, which comprises a front Fresnel lens 81, a heat shield 82, an LCD screen 83, a rear Fresnel lens 84, and a reflector 85 arranged sequentially. The heat shield 82 is a structure that blocks the heat generated by the light source, preventing it from being transferred to the LCD screen 83. The reflector 85 is a structure used to change the light path emitted from the rear Fresnel lens 84 and direct the light towards the lens assembly 5.

[0065] The first radiator provided in this application was simulated to detect the airflow to the external fan and the internal fan, as shown in Table 1.

[0066] Table 1

[0067] Note: Inclination angle refers to the angle formed between the external fan and the partition along the direction from the external fan to the internal fan.

[0068] As shown in the table above, compared with the first radiator with a partition tilt angle of 0°, when the tilt angle is greater than 0° and less than or equal to 43.7°, the first radiator provided in this application has a larger internal fan air volume, a larger external fan air volume, and a larger total air volume, resulting in better heat dissipation.

[0069] In the above embodiments, the descriptions of each embodiment have different focuses. Parts not described in detail in a particular embodiment can be referred to in the relevant descriptions of other embodiments. In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0070] The projector provided in the embodiments of this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A projector, characterized in that, include: The housing has a mounting cavity and a first heat dissipation vent. An internal fan is disposed inside the mounting cavity and faces the first heat dissipation vent; An external fan is installed at the first heat dissipation vent; and, A first radiator is disposed within the mounting cavity, and along the direction of gravity, the inner fan and the outer fan are located on the upper and lower sides of the first radiator; The first radiator includes a partition plate, which is disposed between the inner fan and the outer fan to impede airflow exchange between the inner fan and the outer fan. The partition plate has an angle greater than 0 degrees and less than 180 degrees with respect to the direction of gravity.

2. The projector according to claim 1, characterized in that, The partition divides the mounting cavity into an outer circulation cavity and an inner circulation cavity. The first heat sink also includes a plurality of spaced first heat sinks and a plurality of spaced second heat sinks connected to opposite sides of the partition. The plurality of first heat sinks are located in the outer circulation cavity, and the plurality of second heat sinks are located in the inner circulation cavity. The first heat dissipation vent is connected to the outer circulation cavity.

3. The projector according to claim 2, characterized in that, With respect to the geometric center of the partition, a plurality of first heat dissipation plates and a plurality of second heat dissipation plates are arranged symmetrically at the center, corresponding one to one.

4. The projector according to claim 3, characterized in that, The first heat sink and the second heat sink are both right-angled triangles, and the hypotenuses of the first heat sink and the second heat sink are both located on the partition. Alternatively, both the first heat sink and the second heat sink are right-angled trapezoids, with the inclined sides of both the first and second heat sinks located on the partition.

5. The projector according to claim 2, characterized in that, Multiple first heat dissipation plates, the partition, and the inner wall of the outer circulation cavity enclose a first flow channel. Along the direction of the first flow channel towards the outer fan, the first flow channel gradually increases in size, and the air inlet side of the outer fan is positioned towards the first flow channel. Multiple second heat dissipation plates, the partition, and the inner wall of the inner circulation cavity enclose a second flow channel. Along the direction of the second flow channel towards the inner fan, the second flow channel gradually increases in size, and the air inlet side of the inner fan is positioned towards the second flow channel.

6. The projector according to claim 5, characterized in that, A fixing plate is detachably connected to the inner wall of the mounting cavity. The fixing plate is located on the side of the second heat sink away from the partition. The fixing plate and the inner wall of the mounting cavity together fix the first heat sink. The fixing plate is provided with a second air inlet that communicates with one end of the second guide channel. One side of the fixing plate and the inner wall of the mounting cavity enclose a second air outlet that communicates with the other end of the second guide channel.

7. The projector according to claim 6, characterized in that, The housing includes a first housing and a second housing that are detachably connected. The first housing and the second housing together form the mounting cavity. The fixing plate is detachably connected to the side of the first housing facing the second housing. The first housing is provided with the first heat sink. The opposite inner walls of the second housing are provided with limit grooves, and one end of each limit groove faces the fixing plate. The projector also includes a lens, with both ends of the lens located in the two limiting grooves, and the fixing plate fitting into the opening of each limiting groove.

8. The projector according to claim 7, characterized in that, The internal fan is located inside the first housing and is used to circulate the airflow between the first housing and the second housing.

9. The projector according to claim 1, characterized in that, It also includes a lens assembly, with the external fan, the first radiator, the internal fan, and the lens assembly arranged side by side in sequence.

10. The projector according to claim 9, characterized in that, The projector also includes a light source assembly and a second heat sink. The light source assembly is disposed in the mounting cavity, and the second heat sink is located outside the housing and close to the light source assembly. The air outlet side of the external fan is disposed towards the second heat sink.

Images