Heat dissipation module and projector

Abstract

The invention discloses a heat dissipation module and a projector. The heat dissipation module comprises a radiator used for receiving or flowing out air flow. The radiator comprises a body and radiating fins, the body comprises a fixing plate and a partition plate, the fixing plate is provided with a first surface, a second surface and a third surface, the first surface is opposite to the second surface, the third surface is connected to the first surface and the second surface, and the heat source is arranged adjacent to the first surface. The number of the partition plates is three or more, the end face of each partition plate is connected to the second surface of the fixing plate and arranged in parallel, so that spaces are formed between the partition plates, and one cooling fin is correspondingly arranged in each space. Each cooling fin is of a wavy structure with a plurality of sections, and a fracture structure is arranged on the surface of each section. The third surface of the fixing plate and the side face connected with the end face of the partition plate form an air guide face, and the radiator receives air flow or flows out of the air guide face. The heat dissipation module and the projector have a good overall heat dissipation effect.

Description

Technical Field

[0001] The present invention relates to a heat dissipation module and a projector. Background Art

[0002] The main design points of mainstream projector products mainly focus on the volume, price, and noise of the radiator. There are various manufacturing processes for heat dissipation fins. Among them, the most common, simple, and inexpensive method is extrusion, which is also the most commonly used manufacturing method for pure aluminum heat sinks without heat pipes on the market.

[0003] In addition, the radiator can also be manufactured by forging or die casting. Among them, the degree of freedom of the fin shape and arrangement of the radiator manufactured by forging is much higher than that of the extrusion method. Also, the fins using the stacked fin process have a higher fin density.

[0004] Currently, the heat sinks used in solid-state light source projectors usually adopt a forced cooling method with a fan and heat dissipation fins, and the fin structure mostly uses flat fins. With the evolution of products and the increasing demand of users for high-brightness and low-noise products, generally, the heat generated by high-brightness products will increase. Therefore, without increasing the noise, it is necessary to increase the volume of the heat sink to reduce the temperature.

[0005] However, with the increase in the volume of the heat sink, problems such as the product becoming more bulky, lacking mobility, and increasing the risk of installation will occur, causing trouble to users. Summary of the Invention

[0006] The present invention provides a heat dissipation module and a projection device with good heat dissipation effect and a thin and light overall volume.

[0007] Other objects and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

[0008] To achieve one or part or all of the above purposes or other purposes, an embodiment of the present invention provides a heat dissipation module for dissipating heat from a heat source. The heat dissipation module includes a radiator for receiving or discharging air flow. The radiator includes a body and a plurality of heat dissipation fins, wherein the body includes a fixing plate and a plurality of partition plates. The fixing plate has a first surface, a second surface, and a third surface. The first surface is opposite to the second surface, and the third surface is connected to the first surface and the second surface. Compared with the second surface of the fixing plate, the heat source is disposed closer to the first surface of the fixing plate. The second surface of the fixing plate is parallel to a first direction. The number of the plurality of partition plates is more than three, and they are respectively parallel to a second direction and connected to the second surface of the fixing plate by end faces. The first direction is perpendicular to the second direction. A plurality of spaces are formed between the plurality of partition plates and the second surface of the fixing plate. The plurality of heat dissipation fins are respectively disposed in the plurality of spaces. Each heat dissipation fin is a wave-like structure, and the orthographic projection of the wave-like structure on the plane formed by the first direction and the second direction is wave-like. The wave-like structure has a plurality of segments, and a rupture structure is provided on the surface of each segment extending along a third direction. The third direction is perpendicular to the first direction and the second direction. Wherein the third surface of the fixing plate and the side surfaces connected to the end faces of the plurality of partition plates form a wind guiding surface, and the radiator receives or discharges air flow through the wind guiding surface.

[0009] To achieve one or part or all of the above purposes or other purposes, an embodiment of the present invention provides a projector including an illumination module, a light valve module, a lens module, and a heat dissipation module. The illumination module is used to provide an illumination beam; the light valve module is disposed on the transmission path of the illumination beam and is used to convert the illumination beam into an image beam; the lens module is disposed on the transmission path of the image beam and is used to project the image beam; the heat dissipation module is used to dissipate heat from a heat source, wherein the heat source includes at least one of the illumination module and the light valve module. The heat dissipation module includes a radiator for receiving or discharging air flow. The radiator includes a body and a plurality of heat dissipation fins. The body includes a fixing plate and a plurality of partition plates. The fixing plate has a first surface, a second surface, and a third surface. The first surface is opposite to the second surface, and the third surface is connected to the first surface and the second surface. Compared with the second surface of the fixing plate, the heat source is disposed closer to the first surface of the fixing plate. The second surface of the fixing plate is parallel to a first direction. The number of the plurality of partition plates is more than three, and they are respectively parallel to a second direction and connected to the second surface of the fixing plate by end faces. The first direction is perpendicular to the second direction. A plurality of spaces are formed between the plurality of partition plates and the second surface of the fixing plate. The plurality of heat dissipation fins are respectively disposed in the plurality of spaces. Each heat dissipation fin is a wave-like structure, and the orthographic projection of the wave-like structure on the plane formed by the first direction and the second direction is wave-like. The wave-like structure has a plurality of segments, and a rupture structure is provided on the surface of each segment extending along a third direction. The third direction is perpendicular to the first direction and the second direction. Wherein the third surface of the fixing plate and the side surfaces connected to the end faces of the plurality of partition plates form a wind guiding surface, and the radiator receives or discharges air flow through the wind guiding surface.

[0010] Based on the above, the embodiments of the present invention have at least one of the following advantages or effects. In the heat dissipation module and the projector of the embodiments of the present invention, a wavy heat sink fin structure is used in the heat sink and the configuration position of the fan is matched, so that a good heat dissipation effect can be provided on the premise that the overall volume of the heat sink is thin and light, and further the projector applying this heat dissipation module has a thin and light volume.

[0011] To make the above features and advantages of the present invention more obvious and understandable, specific embodiments are given below and detailed descriptions are made in conjunction with the accompanying drawings as follows. Description of the Drawings

[0012] Figure 1 It is a schematic diagram of a projector according to an embodiment of the present invention.

[0013] Figure 2 is Figure 1 a schematic diagram of the heat dissipation module in

[0014] Figure 3 is Figure 2 a schematic diagram of the heat sink of

[0015] Figure 4A is a three-dimensional schematic diagram of the heat sink fin.

[0016] Figure 4B is a cross-sectional schematic diagram of the heat sink.

[0017] Figure 5A is a schematic diagram of a triangular rupture structure.

[0018] Figure 5B is a schematic diagram of a concave-convex rupture structure. Detailed Description of the Embodiments

[0019] Regarding the foregoing and other technical contents, features and effects of the present invention, they will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only for reference to the directions in the drawings. Therefore, the directional terms used are for explanation and not for limiting the present invention. In addition, the "connection" mentioned in the following embodiments includes the meanings of "direct connection" and "indirect connection".

[0020] Figure 1 It is a schematic diagram of a projector according to an embodiment of the present invention. Please refer to Figure 1 , the projector 10 includes a lighting module 12, a light valve module 14, a lens module 16 and a heat dissipation module 100.

[0021] The above-mentioned illumination module 12 is used to provide an illumination beam L1, and the light valve module 14 is disposed on the transmission path of the illumination beam L1 to convert the illumination beam L1 into an image beam L2. The lens module 16 is disposed on the transmission path of the image beam L2 to project the image beam L2 out of the projector 10. The heat dissipation module 100 is used to dissipate heat from a heat source H (shown in Figure 3 ), where the heat source H can be at least one of the illumination module 12 and the light valve module 14, and the heat source H can also be a heat generating element in the illumination module 12 or / and a heat generating element in the light valve module 14.

[0022] The above-mentioned light source module 12 for providing the illumination beam L1 includes a light source. The light source module 12 may further include optical elements such as a wavelength conversion element, a light homogenizing element, a filter element, a light guiding element, and a light transmission element. The light source module 12 is used to provide beams of different wavelengths as the source of the illumination beam. The light source can be a solid-state light source, such as a light-emitting diode (LED), a laser diode (LD), or a combination thereof. The light valve module 14 includes a light valve. The light valve is, for example, a reflective light modulator such as a liquid crystal on silicon panel (LCoS panel), a digital micro-mirror device (DMD), etc. In some embodiments, the light valve can also be a transmissive liquid crystal panel, an electro-optical modulator, a magneto-optic modulator, an acousto-optic modulator (AOM), etc. In addition, the lens module 16, for example, includes a combination of one or more optical lenses with diopters. The optical lenses include various combinations of non-planar lenses such as biconcave lenses, biconvex lenses, convex-concave lenses, concave-convex lenses, plano-convex lenses, and plano-concave lenses. The present invention does not limit the type and kind of the lens module 16.

[0023] Figure 2 For Figure 1 a schematic diagram of the heat dissipation module in Figure 3 and Figure 2 is a schematic diagram of the radiator in Figure 1 . Figure 2 And Figure 3 , the heat dissipation module 100 of this embodiment includes a radiator 200.

[0024] The radiator 200 is used to receive or discharge an air flow, and the radiator 200 includes a body 210 and a plurality of fins 220. The body 210 includes a fixing plate 212 and a plurality of partition plates 214. The fixing plate 212 has a first surface 212a, a second surface 212b, and a third surface 212c. The first surface 212a is opposite to the second surface 212b, and the third surface 212c is connected to the first surface 212a and the second surface 212b. Compared with the second surface 212b of the fixing plate 212, the heat source H is disposed closer to the first surface 212a of the fixing plate 212. In one embodiment, the heat source H is in direct contact with the first surface 212a of the fixing plate 212. In other words, the first surface 212a is the heat-receiving surface of the heat source H.

[0025] Continuing from the above, the first surface 212a and the second surface 212b of this embodiment are parallel to the first direction D1. Specifically, the first surface 212a and the second surface 212b of the fixing plate 212 are parallel to the plane formed by the first direction D1 and the third direction D3 and have a common normal direction N1, and this normal direction N1 and the third direction D3 are perpendicular to the first direction D1.

[0026] The end face 214a of the end of each of the above-mentioned partition plates 214 is connected to the second surface 212b of the fixing plate 212, and the partition plates 214 are arranged at intervals parallel to the second direction D2. Specifically, the partition plates 214 are arranged at intervals along the first direction D1. Each partition plate 214 has another end face (not labeled) opposite to the end face 214a, and the surface between the two end faces is parallel to the plane formed by the third direction D3 and the second direction D2, where the second direction D2 is perpendicular to the first direction D1 and the third direction D3. In other words, the normal direction N2 of the partition plate 214 is parallel to the first direction D1. More specifically, the normal direction N2 of the surface between the two opposite end faces of the partition plate 214 is parallel to the first direction D1.

[0027] In the radiator 200 of this embodiment, the number of partition plates 214 is six, and a space S is formed between any two adjacent partition plates 214 and the second surface 212b of the fixing plate 212. In other words, the arrangement of the plurality of partition plates 214 makes the radiator 200 have a plurality of spaces S, and a fin 220 is correspondingly arranged in each space S. Although this embodiment is described with six partition plates 214, it is not limited thereto. As long as the number of partition plates 214 is more than three, the radiator 200 can have a plurality of spaces S.

[0028] Figure 4A is a three-dimensional schematic diagram of the fin 220, and Figure 4B is a cross-sectional schematic diagram of the radiator 200. Please refer to Figure 3 、 Figure 4Aand Figure 4B In this embodiment, the heat sink 220 has a wavy structure, and the orthographic projection of the wavy structure on the plane formed by the first direction D1 and the second direction D2 is wavy. This wavy structure has a plurality of segments 222, and the orthographic projection of any two adjacent segments 222 on this plane is U-shaped. In other embodiments not shown, the orthographic projection of any two adjacent segments 222 of the wavy structure on this plane may also be V-shaped.

[0029] In one embodiment, the heat sink 220 is flexible, so the heat sink 220 can be deformed after being stressed. By virtue of the flexible characteristic of the heat sink 220, the angle and distance between adjacent segments 222 of the heat sink 220 can be adjusted.

[0030] In one embodiment, the thickness t1 of each segment 222 is less than 0.1 mm, and the ratio of the thickness t1 of the segment 222 to the thickness t2 of the partition plate 214 is less than 0.5. Specifically, the thickness t1 of each segment 222 refers to the width of the segment 222 in the plane formed by the first direction D1 and the second direction D2 (as Figure 4A , Figure 4B shown); the thickness t2 of the partition plate 214 refers to the length of each partition plate 214 in the first direction D1 in the plane formed by the first direction D1 and the second direction D2. With such a setting, the partition plate 214 can provide sufficient supporting force to support the heat sink 220, and the heat transferred to the partition plate 214 can also be dissipated more quickly through the heat sink 220.

[0031] In addition, a rupture structure 224 is further provided on the surface 222a of each segment 222 extending along the third direction D3, wherein the normal direction N3 of the third surface 212c of the fixing plate 212 is parallel to the third direction D3. In this embodiment, the rupture structure 224 is a louver structure and is inclined relative to the surface 222a of each segment 222.

[0032] As Figure 4A shown, the rupture structure in this embodiment is rectangular, that is, the shape of the rupture structure broken obliquely on the surface 222a is rectangular. However, in other embodiments, the rupture structure may also be other shapes or other structures. Figure 5A is a schematic diagram of the rupture structure being triangular. And Figure 5B is a schematic diagram of the rupture structure being a concavo-convex structure. As Figure 5A shown, the rupture structure can also be formed into a triangle, that is, an embodiment in which the shape of the rupture structure broken obliquely on the surface 222a is triangular. As Figure 5B shown, the rupture structure can also be a concavo-convex structure formed on the surface of the segment 222, that is, an opening is broken out in the structure by means of protrusion or depression.

[0033] As can be seen from the above, the shape of the rupture structure can be changed according to requirements, as long as it can achieve the purpose of disturbing the air flow to enhance the heat dissipation effect, and it is not limited to the examples listed.

[0034] In one embodiment, the heat dissipation module 100 includes a fan 300. The fan 300 is disposed adjacent to the heat sink 200 such that the heat sink 200 can receive the air flow generated by the fan 300, and the fan 300 faces the air guiding surface FI of the heat sink 200, wherein the third surface 212c of the fixing plate 212 and the side surface 214b connected to the end surface 214a of the partition plate 214 form the air guiding surface FI. In this embodiment, the air flow generated by the fan 300 can enter the heat sink 200 along the third direction D3 through the air guiding surface FI. Among them, the air flow generated by the fan 300, for example, passes through between any two adjacent segment portions 222 of the heat sink fins 220, and the rupture structures 224 on each segment portion 222 are used to disturb the air flow. In another embodiment, the air flow generated by the fan 300 can flow out from the air guiding surface FI after passing through the heat sink 200 in a direction opposite to the third direction D3. In other embodiments, the fan can be disposed at the distal end of the heat sink 200, and through a guiding element, such as an air duct, the air flow generated by the fan is guided to the air guiding surface FI of the heat sink 200, so that the air flow enters the heat sink 200 through the air guiding surface FI or the air flow flows out from the air guiding surface FI after passing through the heat sink 200.

[0035] Incidentally, the fan 300 in this embodiment is selectively used. Compared with the case where the fan 300 is not used in the heat dissipation module 100, the heat dissipation module 100 in this embodiment uses the heat sink 200 and the fan 300 in combination, and the air flow generated by the fan 300 can be used to perform forced convection on the heat sink 200 to effectively enhance the heat dissipation effect.

[0036] Please also refer to Figure 2 and Figure 3 , when this heat dissipation module 100 is applied to the projector 10, the heat source H disposed adjacent to the first surface 212a of the fixing plate 212 of the main body 210 of the heat sink 200 generates heat due to operation, and the heat is transferred to the first surface 212a of the fixing plate 212, passed through the fixing plate 212 to the second surface 212b, and then transferred through the second surface 212b to the heat sink fins 220 disposed in the space S for heat dissipation. At the same time, a part of the heat also passes from the second surface 212b of the fixing plate 212 through the end surface 214a to the partition plate 214, and is transferred and dissipated by the partition plate 214.

[0037] In this embodiment, when the fan 300 facing the air guiding surface FI operates, the air flow generated by the fan 300 enters the radiator 200 along the third direction D3 through the air guiding surface FI. Due to the set position of the air guiding surface FI, the air flow generated by the fan 300 can effectively pass through the surface 222a of each segment 222 of the heat sink 220 to carry away the heat on the heat sink 220.

[0038] Incidentally, the rupture structure 224 provided on the segment 222 of the heat sink 220 enhances the overall heat dissipation effect of the radiator 200. Specifically, the rupture structure 224 provided on the segment 222 is inclined relative to the surface 222a of the segment 222, thus disturbing the air flow flowing through the segment 222 of the heat sink 220 along the third direction D3, increasing the heat convection effect, and thus can further effectively improve the overall heat dissipation effect of the heat dissipation module 100.

[0039] In addition, the overall heat dissipation effect of the radiator 200 can be changed by controlling factors such as the cross-sectional area through which the air flow passes through the radiator 200, the surface area of the heat sink, and the heat flux area of the heat sink.

[0040] Incidentally, in this embodiment, the fixing plate 212 and the partition plate 214 have the same length d1 in the third direction D3, so that the body 210 of the radiator 200 also has a length d1 in the third direction D3, and the length d1 of the body 210 in the third direction D3 is greater than the length d2 of the heat sink 220 in the third direction D3; that is, in the third direction D3, the length d2 of the heat sink 220 is less than the length d1 of the partition plate 214 (i.e., the length d1 of the body 210). Therefore, the set position of the heat sink 220 in the body 210 can be set relatively close to the fan 300 (or the air guiding surface FI), relatively far from the fan 300 (or the air guiding surface FI), or centered (as Figure 2 、 Figure 3 shown), which is determined according to requirements. In other words, the cross-section SF can overlap with the air guiding surface FI, or the cross-section SF is spaced apart from the air guiding surface FI by a certain distance. Wherein, the cross-section SF is the cross-section of the radiator 200 cut along the first direction D1 and the second direction D2, and this cross-section SF corresponds to the set position of the edge of the heat sink 220 in the third direction in the radiator 200.

[0041] In addition, considering the overall heat dissipation effect, in one embodiment, the set position of the heat sink 220 corresponds to the set position of the heat source H; that is, the orthographic projection range of the heat sink 220 on the fixing plate 212 at least partially overlaps the orthographic projection range of the heat source H on the fixing plate 212. Through such a setting method, it can be ensured that the set position of the heat sink 220 corresponds to the set position of the heat source H, so that the radiator 200 has a good heat dissipation effect.

[0042] As described above, in the cross-section SF of the radiator 200 of this embodiment, the proportion of the area through which the air flow can pass is between 60% and 70%.

[0043] Specifically, the calculation method of the proportion of the area through which the air flow can pass is as follows:

[0044]

[0045] Wherein HSFS is the spacing distance between two adjacent partition plates 214 in the first direction D1, HSFN is the number of partition plates 214, HSFH is the length of the partition plate 214 in the second direction D2, LFN is the number of segment parts 222 of each heat sink 220 (such as Figure 4A that is, having 4 segment parts 222), LFT is the thickness of each segment part 222 (such as Figure 4A the thickness t1 in the figure), and HSW is the length of the radiator 200 in the first direction D1.

[0046] In addition, the heat transfer coefficient of the radiator 200 in the cross-section SF is between 0.3 and 0.4. Specifically, after the heat of the heat source H is transferred from the first surface 212a of the fixing plate 212 to the second surface 212b, it will be transferred from the second surface 212b to the heat sink 220 through the end face 214a of the partition plate 214 for heat dissipation. This heat transfer coefficient is the ability of the heat of the heat source H to be dissipated by the radiator 200 in the cross-section SF after being transferred from the end face 214a of the partition plate 214 to the heat sink 220.

[0047] Specifically, the heat transfer coefficient formula is:

[0048]

[0049] Wherein HSL is the length of the radiator 200 in the third direction D3 (which can be regarded as, for example, Figure 2 the length d1 in the figure), HSFT is the thickness of the partition plate 214 (such as Figure 4B the thickness t2 in the figure), HSFN is the number of partition plates 214, HSW is the length of the radiator 200 in the first direction D1, and HSFH is the length of the partition plate 214 in the second direction D2.

[0050] Table 1 shows the comparison of the overall volume and heat dissipation effect between a common radiator and the radiator 200 of this embodiment.

[0051]

[0052]

[0053] As can be seen from Table 1, the radiator 200 of this embodiment utilizes a corrugated heat sink 220 in combination with a rupture structure 224. Compared with conventional radiators with different combinations of heat dissipation methods (stacked fins or metal foam), the overall volume of the radiator 200 of this embodiment is reduced by more than 50%, thus significantly reducing the overall volume of the radiator 200.

[0054] In summary, the embodiments of the present invention have at least one of the following advantages or effects.

[0055] In the heat dissipation module and the projector of the embodiments of the present invention, a corrugated heat sink is used in the radiator and is combined with a rupture structure, which can not only increase the heat conduction area, but also improve the heat flow effect through the setting method of the rupture structure, thus enhancing the overall heat dissipation effect of the radiator.

[0056] In addition, the position configuration of the radiator and the air guiding surface enables the air flow generated by the fan to pass through each section of the heat sink provided in the body of the radiator.

[0057] The heat dissipation module of the present invention can provide better heat dissipation effect on the premise that its volume is smaller and thinner than that of conventional heat dissipation modules. Therefore, the projector applying this heat dissipation module also has a thin and light volume.

[0058] However, the above are only the preferred embodiments of the present invention, and the scope of implementation of the present invention cannot be limited thereby. That is, all simple equivalent changes and modifications made according to the claims and the content of the present invention still fall within the scope covered by the patent of the present invention. In addition, any embodiment or claim of the present invention does not have to achieve all the purposes, advantages or features disclosed in the present invention. In addition, the abstract and the title (invention name) are only used to assist in the retrieval of patent documents and are not used to limit the scope of rights of the present invention. In addition, the terms "first", "second", etc. mentioned in this specification or claims are only used to name elements or distinguish different embodiments or scopes, and are not used to limit the upper or lower limits of the number of elements.

Claims

1. A heat dissipation module for dissipating heat from a heat source, characterized in that, the heat dissipation module includes a radiator, wherein: the radiator is used for receiving or flowing out air flow, and it includes a body and a plurality of heat dissipation fins, wherein: the body includes a fixing plate and a plurality of partition plates. The fixing plate has a first surface, a second surface and a third surface. The first surface is opposite to the second surface, and the third surface is connected to the first surface and the second surface. Compared with the second surface of the fixing plate, the heat source is arranged closer to the first surface of the fixing plate. The second surface of the fixing plate is parallel to the first direction. The number of the plurality of partition plates is more than three, and they are respectively parallel to the second direction and connected to the second surface of the fixing plate by end faces. The first direction is perpendicular to the second direction, and a plurality of spaces are formed between the plurality of partition plates and the second surface of the fixing plate; and the plurality of heat dissipation fins are respectively arranged in the plurality of spaces. Each of the plurality of heat dissipation fins is a corrugated structure, and the orthographic projection of the corrugated structure on the plane formed by the first direction and the second direction is corrugated. The corrugated structure has a plurality of segments, and a rupture structure is provided on the surface of each of the plurality of segments extending along the third direction. The third direction is perpendicular to the first direction and the second direction, wherein, the third surface of the fixing plate and the side surfaces connected to the end faces of the plurality of partition plates form a wind guiding surface, and the radiator receives or flows out the air flow with the wind guiding surface.

2. The heat dissipation module according to claim 1, characterized in that, in the corrugated structure, the orthographic projection of any two adjacent segments on the plane is V-shaped or U-shaped.

3. The heat dissipation module according to claim 1, characterized in that, the thickness of each of the plurality of segments of the corrugated structure is less than 0.1 mm.

4. The heat dissipation module according to claim 1, characterized in that, the ratio of the thickness of each of the plurality of segments of the corrugated structure to the thickness of each of the plurality of partition plates is less than 0.

5.

5. The heat dissipation module according to claim 1, characterized in that, in the cross-section of the radiator, the area ratio of the area through which the air flow can pass is between 60% and 70%, wherein the cross-section is the section of the radiator cut along the first direction and the second direction.

6. The heat dissipation module according to claim 1, characterized in that, the heat transfer coefficient of the radiator in the cross-section is between 0.3 and 0.4, wherein the cross-section is the section of the radiator cut along the first direction and the second direction.

7. The heat dissipation module according to claim 1, characterized in that, in the third direction, the length of the plurality of heat dissipation fins is less than the length of the plurality of partition plates.

8. The heat dissipation module according to claim 1, characterized in that, the orthographic projection range of the plurality of heat dissipation fins on the fixing plate at least partially overlaps the orthographic projection range of the heat source on the fixing plate.

9. The heat dissipation module according to claim 1, characterized in that, The rupture structure is a louver structure, and the louver structure is inclined relative to the surface.

10. The heat dissipation module according to claim 1, wherein, the heat dissipation module further includes a fan, wherein: the fan is disposed adjacent to the radiator, and the fan faces the air guiding surface of the radiator, wherein the air flow generated by the fan is used to enter the radiator along the third direction or to make the air flow pass through the radiator along a direction opposite to the third direction and then flow out from the air guiding surface.

11. A projector, wherein, the projector includes an illumination module, a light valve module, a lens module, and a heat dissipation module, wherein: the illumination module is used to provide an illumination beam; the light valve module is disposed on the transmission path of the illumination beam and is used to convert the illumination beam into an image beam; the lens module is disposed on the transmission path of the image beam and is used to project the image beam; and the heat dissipation module is used to dissipate heat from a heat source, wherein the heat source includes at least one of the illumination module and the light valve module, and the heat dissipation module includes a radiator, wherein: the radiator is used to receive or discharge an air flow, and it includes a body and a plurality of heat dissipation fins, wherein: the body includes a fixing plate and a plurality of partition plates, the fixing plate has a first surface, a second surface, and a third surface, the first surface is opposite to the second surface, the third surface is connected to the first surface and the second surface, the heat source is disposed closer to the first surface of the fixing plate than to the second surface of the fixing plate, the second surface of the fixing plate is parallel to the first direction, the number of the plurality of partition plates is more than three, they are respectively parallel to the second direction and are connected to the second surface of the fixing plate by end faces, the first direction is perpendicular to the second direction, and a plurality of spaces are formed between the plurality of partition plates and the second surface of the fixing plate; and the plurality of heat dissipation fins are respectively disposed in the plurality of spaces, each of the plurality of heat dissipation fins is a corrugated structure, the orthographic projection of the corrugated structure on the plane formed by the first direction and the second direction is corrugated, the corrugated structure has a plurality of segments, and a rupture structure is provided on the surface of each of the plurality of segments extending along the third direction, the third direction is perpendicular to the first direction and the second direction, wherein, the third surface of the fixing plate and the side surfaces connected to the end faces of the plurality of partition plates form an air guiding surface, and the radiator receives or discharges the air flow with the air guiding surface.

12. The projector according to claim 11, wherein, in the corrugated structure, the orthographic projection of any two adjacent ones of the plurality of segments on the plane is V-shaped or U-shaped.

13. The projector according to claim 11, wherein, the thickness of each of the plurality of segments of the corrugated structure is less than 0.1 mm.

14. The projector according to claim 11, wherein, The ratio of the thickness of each of the plurality of segments of the wavy structure to the thickness of each of the plurality of partition plates is less than 0.

5.

15. The projector according to claim 11, wherein, in a cross-section of the heat sink, the area ratio through which the air flow can pass is between 60% and 70%, where the cross-section is a plane obtained by cutting the heat sink along the first direction and the second direction.

16. The projector according to claim 11, wherein, the heat transfer coefficient of the heat sink in the cross-section is between 0.3 and 0.4, where the cross-section is a plane obtained by cutting the heat sink along the first direction and the second direction.

17. The projector according to claim 11, wherein, in the third direction, the length of the plurality of heat dissipation fins is less than the length of the plurality of partition plates.

18. The projector according to claim 11, wherein, the orthographic projection range of the plurality of heat dissipation fins on the fixing plate at least partially overlaps the orthographic projection range of the heat source on the fixing plate.

19. The projector according to claim 11, wherein, the rupture structure is a louver structure, and the louver structure is inclined relative to the surface.

20. The projector according to claim 11, wherein, the projector further includes a fan, wherein: the fan is arranged adjacent to the heat sink, and the fan faces the air guiding surface of the heat sink, and the air flow generated by the fan is used to enter the heat sink along the third direction or to flow out from the air guiding surface after passing through the heat sink along a direction opposite to the third direction.

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