Projector heat dissipation device and projector

Abstract

The application relates to a projector heat dissipation device and a projector, which comprises a body assembly, a lens assembly and a light source assembly. According to the above scheme, when the light source works, the heat generated by the light source is mainly gathered on the light path piece; at this time, the inner circulation fan is started; since the position of the inner circulation fan corresponds to the position of the light path piece, the air generated by the inner circulation fan blows on the light path piece, so that the heat on the surface of the light path piece is taken into the air in the body assembly; meanwhile, the air in the body assembly continues to flow through the second radiator, the second radiator again leads out the heat in the air, further, the air continues to flow through the first radiator, the first radiator again leads out the heat in the air, and finally the air after cooling reenters the inner circulation fan to start a new heat exchange cycle.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of projector, in particular to a projector heat dissipation device and a projector. BACKGROUND

[0002] The projector is a kind of projection device using optical magnification imaging principle to work, and a small dust particle falling on the liquid crystal screen of the projector will be enlarged and a very obvious spot will be seen on the imaging screen. To solve this problem, people hope that the light path part of the projector can be designed in a closed manner to isolate dust pollution in the external air.

[0003] Since the light source of the projector generates a large amount of heat during work, and the heat accumulation is particularly sensitive to the liquid crystal screen, when the heat accumulates in the working cavity, it will cause the temperature of the projector and the internal components to be too high, thereby causing the projector to work invalid or the service life to be reduced, therefore the heat dissipation effect is very important to the projector.

[0004] Most of the existing projectors use an open light path to solve the heat dissipation problem, but they are easily polluted by dust spots. Although some projectors use a closed light path, the heat dissipation structure is complex, the heat dissipation effect is poor, the price is high, and it is not convenient for wide range use. SUMMARY

[0005] In order to solve the above problems, the present application provides a projector heat dissipation device and a projector, which not only adopts a closed light path, but also has good heat dissipation effect, and can reduce the space volume of the projector.

[0006] The present application provides a projector heat dissipation device, which comprises a body assembly, a lens assembly and a light source assembly, the body assembly comprises a first shell, a second shell, a light path piece, an internal circulation fan, a first heat sink and an external circulation fan, the first shell and the second shell are detachably connected to form a first inner cavity and a second inner cavity; the light path piece is arranged in the first inner cavity, the internal circulation fan, the first heat sink and the external circulation fan are arranged in the second inner cavity in a first direction in sequence, and the position of the internal circulation fan corresponds to the position of the light path piece;

[0007] The lens assembly is arranged on the body assembly, and the lens assembly cooperates with the light path piece;

[0008] The light source assembly comprises a second heat sink and an emitting light source, the second heat sink is arranged on the body assembly, and the position of the second heat sink corresponds to the positions of the first heat sink and the external circulation fan, and the emitting light source is located in the second heat sink.

[0009] In one of the embodiments, the light path component includes a mirror, a front lens, a liquid crystal screen and a liquid crystal screen support;

[0010] The mirror, the front lens and the liquid crystal screen and the liquid crystal screen support are sequentially arranged in the first inner cavity along a first direction, the mirror is horizontally arranged at a preset angle, and the liquid crystal screen and the liquid crystal screen support are located above the light emitting source.

[0011] In one of the embodiments, the fuselage assembly further includes a heat insulation plate, the heat insulation plate is arranged in the first inner cavity, and the heat insulation plate is located between the liquid crystal screen and the liquid crystal screen support and the light emitting source.

[0012] In one of the embodiments, the first heat sink includes a first base plate, a plurality of first fins and a plurality of second fins, the first base plate is arranged in the second inner cavity, the first fins and the second fins are arranged on both sides of the first base plate along a first direction, and gaps are arranged between adjacent two first fins and between adjacent two second fins.

[0013] In one of the embodiments, the second heat sink includes a second base plate, a first side wall, a second side wall, a third fin, a fourth fin, a fifth fin, a sixth fin and a seventh fin;

[0014] The first side wall and the second side wall are arranged on the same side of the second base plate, and the first side wall and the second side wall are in an inverted V-shaped structure, one end of the first side wall away from the second base plate is connected with an inner wall of the first shell, and one end of the second side wall away from the second base plate is connected with an inner wall of the second shell;

[0015] The third fin is arranged on the other side of the second base plate, the fourth fin and the fifth fin are correspondingly arranged on opposite sides of the first side wall, and the sixth fin and the seventh fin are arranged on opposite sides of the second side wall;

[0016] The light emitting source is located on the second base plate and between the first side wall and the second side wall;

[0017] The position of the first heat sink corresponds to the positions of the first side wall and the second side wall, and the position of the outer circulating fan corresponds to the position of the third fin.

[0018] In one of the embodiments, the light emitting source includes a light collecting funnel, a rear lens and an LED lamp plate;

[0019] The LED lamp plate is arranged on the second base plate and between the first side wall and the second side wall;

[0020] The light collecting funnel is located in the inner cavity between the first sidewall and the second sidewall, the rear Fresnel lens is arranged on the side of the light collecting funnel away from the LED lamp panel, and the heat insulation plate is located between the liquid crystal screen and the liquid crystal screen support and the rear Fresnel lens.

[0021] In one of the embodiments, the light source assembly further comprises a cover plate arranged on the side of the first sidewall and the second sidewall located in the external space.

[0022] In one of the embodiments, the second heat sink further comprises a first supporting part and a second supporting part, the first supporting part is arranged at the end of the first sidewall away from the second base plate, and the second supporting part is arranged at the end of the second sidewall away from the second base plate.

[0023] The first supporting part is provided with a first clamping groove, the second supporting part is provided with a second clamping groove, the first clamping groove is matched with the first protrusion on the inner wall of the first shell, and the second clamping groove is matched with the second protrusion on the inner wall of the second shell.

[0024] In one of the embodiments, the first shell is provided with a first ventilation nozzle, the second shell is provided with a second ventilation nozzle, the position of the first ventilation nozzle corresponds to the position of the fifth fin, and the position of the second ventilation nozzle corresponds to the position of the seventh fin.

[0025] The application further provides a projector, which comprises a projector body and a projector heat dissipation device as described in any one of the embodiments of the application.

[0026] The application has the following beneficial effects:

[0027] The projector heat dissipation device provided by the application can realize the following effects: when the light emitting source works, the heat generated by the light emitting source is mainly gathered on the light path member, at this time, the inner circulation fan is started, the position of the inner circulation fan corresponds to the position of the light path member, so the air generated by the inner circulation fan blows on the light path member, thereby the heat on the surface of the light path member is brought into the air in the body assembly, the air in the body assembly flows through the cover plate, the cover plate leads out the heat in the air, meanwhile, the air in the body assembly continues to flow through the second heat sink, the second heat sink leads out the heat in the air again, further, the air continues to flow through the first heat sink, the first heat sink leads out the heat in the air again, and finally the air cooled again reenters the inner circulation fan to start a new heat exchange cycle.

[0028] Furthermore, when the external circulation fan draws in low-temperature air from the outside, because the position of the external circulation fan corresponds to the position of the second heat sink, the drawn-in low-temperature air also carries away the heat from the chassis components after passing through the second heat sink. Moreover, the first and second ventilation nozzles further increase the heat dissipation capacity of the second heat sink. This invention conducts heat away from the optical path components through internal circulation, and achieves forced convection and radiation heat transfer on multiple heat dissipation surfaces through external circulation. Compared with traditional heat exchange modes, the heat exchange surface area is larger, and the heat dissipation efficiency is higher. Furthermore, the optical path components are located in the first inner cavity, effectively avoiding pollution from the external environment. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of a projector heat dissipation device provided in an embodiment of this application;

[0030] Figure 2 for Figure 1 The front view;

[0031] Figure 3 for Figure 1 Rear view;

[0032] Figure 4 for Figure 1 Internal structure diagram;

[0033] Figure 5 for Figure 4 3D image

[0034] Figure 6 for Figure 5 A partial schematic diagram;

[0035] Figure 7 for Figure 5 A schematic diagram of the second heat sink in the diagram;

[0036] Figure 8 for Figure 5 A schematic diagram of the first radiator in the diagram;

[0037] Figure 9 for Figure 1 Internal structure diagram;

[0038] Figure 10 for Figure 1 Another schematic diagram.

[0039] The markings in the image are as follows:

[0040] 1. Body assembly; 101. First housing; 10101. First ventilation nozzle; 102. Second housing; 103. Reflector; 104. Front lens; 105. LCD screen and LCD screen bracket; 106. Heat insulation plate; 107. Internal circulation fan; 108. First heat sink; 10801. First substrate; 10802. First fin; 10803. Second fin; 109. External circulation fan; 2. Lens assembly; 201. Lens; 202. Focusing ring; 203. Focusing gear; 204. Stepper motor; 205. Position 3. Photosensor; 4. Light source assembly; 5. Second heat sink; 6. Second substrate; 7. First sidewall; 8. Second sidewall; 9. Third fin; 10. Fourth fin; 11. Fifth fin; 12. Sixth fin; 13. Seventh fin; 14. First support; 15. Second support; 16. Focusing light chamber; 17. Rear lens; 18. Cover plate; 19. LED light panel; 20. First inner cavity; 20. Second inner cavity. Detailed Implementation

[0041] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0042] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0043] Furthermore, 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0047] like Figures 1-9 As shown in one embodiment of this application, a projector heat dissipation device is provided, including a body assembly 1, a lens assembly 2, and a light source assembly 3. The body assembly 1 includes a first housing 101, a second housing 102, an optical path component, an internal circulation fan 107, a first heat sink 108, and an external circulation fan 109. The first housing 101 and the second housing 102 are detachably connected to form a first inner cavity S1 and a second inner cavity S2. The optical path component is disposed in the first inner cavity, and the internal circulation fan 107, the first heat sink 108, and the external circulation fan 109 are sequentially disposed in the second inner cavity along a first direction, with the position of the internal circulation fan 107 corresponding to the position of the optical path component. The lens assembly 2 is disposed on the body assembly 1 and cooperates with the optical path component. The light source assembly 3 includes a second heat sink 301 and an emitting light source. The second heat sink 301 is disposed on the body assembly 1, with the position of the second heat sink 301 corresponding to the positions of the first heat sink 108 and the external circulation fan 109. The emitting light source is located inside the second heat sink 301.

[0048] For example, the first direction in this application is as follows: Figure 7 The X-axis direction in the diagram. For example... Figure 2 As shown, the lens assembly 2 in this application includes a lens 201, a focus ring 202, a focus gear 203, a stepper motor 204, and a position sensor 205. Since the connection structure of the lens 201, focus ring 202, focus gear 203, stepper motor 204, and position sensor 205 is all prior art, it will not be described in detail here.

[0049] When in use, the heat generated by the emitting light source is mainly concentrated on the optical path component. At this time, the internal circulation fan 107 is turned on. Since the position of the internal circulation fan 107 corresponds to the position of the optical path component, the air generated by the internal circulation fan 107 will blow onto the optical path component, thereby carrying the heat from the surface of the optical path component into the air inside the body assembly. The air inside the body assembly will continue to flow through the second heat sink 301, and the second heat sink 301 will once again conduct heat out of the air. Further, the air will continue to flow through the first heat sink, and the first heat sink will once again conduct heat out of the air. Finally, the cooled air will re-enter the internal circulation fan to start a new heat exchange cycle.

[0050] Furthermore, when the external circulation fan 109 draws in low-temperature air from the outside, the air first flows through the first radiator, carrying away its heat. Since the position of the external circulation fan 109 corresponds to the position of the second radiator 301, the drawn-in low-temperature air also carries away heat from the chassis components after passing through the second radiator 301. This invention conducts heat to the optical components through internal circulation and achieves forced convection and radiation heat transfer across multiple heat dissipation surfaces through external circulation. Compared to traditional heat exchange modes, this results in a larger heat exchange surface area and higher heat dissipation efficiency. Moreover, the optical components are located within the first inner cavity, effectively preventing contamination from the external environment.

[0051] In some embodiments, such as Figure 4 As shown, the optical path components in this application include a reflector 103, a front fretlight 104, a liquid crystal display (LCD) screen and an LCD screen bracket 105. The reflector 103, the front fretlight 104, and the LCD screen and LCD screen bracket 105 are sequentially arranged in the first inner cavity along the first direction. The reflector 103 is horizontal at a preset angle, and the LCD screen and LCD screen bracket 105 are located above the emitting light source.

[0052] When in use, after all components are installed, the internal circulation fan 107 corresponds to the position of the optical path components, that is, the position of the internal circulation fan 107 corresponds to the position of the reflector 103, the front lens 104, the LCD screen and the LCD screen bracket 105. Therefore, the air blown out by the internal circulation fan 107 can quickly cool down the reflector 103, the front lens 104 and the LCD screen.

[0053] In some embodiments, in order to further reduce the temperature on the LCD screen, such as Figure 4 and combined Figure 5 As shown, the fuselage assembly 1 in this application also includes a heat insulation plate 106, which is disposed in the first inner cavity and is located between the liquid crystal screen and the liquid crystal screen bracket 105 and the emitting light source.

[0054] For example, the heat insulation plate 106 is made of heat-insulating glass, which can reduce the heat generated by the emitted light source from directly acting on the LCD screen.

[0055] In some embodiments, such as Figure 8 As shown, the first heat sink 108 in this application includes a first substrate 10801, a plurality of first fins 10802, and a plurality of second fins 10803. The first substrate 10801 is disposed in a second inner cavity. The first fins 10802 and second fins 10803 are disposed on both sides of the first substrate 10801 along a first direction, with a gap between adjacent first fins 10802 and a gap between adjacent second fins 10803. In use, the external circulation fan 109 draws in cool ambient air. As the air is drawn in, it passes through the second fins 10803, thereby carrying away heat.

[0056] In some embodiments, such as Figure 7 and combined Figure 6 As shown, the second heat sink 301 in this application includes a second substrate 30101, a first sidewall 30102, a second sidewall 30103, a third fin 30104, a fourth fin 30105, a fifth fin 30106, a sixth fin 30107, and a seventh fin 30108. The first sidewall 30102 and the second sidewall 30103 are disposed on the same side of the second substrate 30101, and the first sidewall 30102 and the second sidewall 30103 form an inverted V-shape. The end of the first sidewall 30102 away from the second substrate 30101 is connected to the inner wall of the first housing 101, and the end of the second sidewall 30103 away from the second substrate 30101... One end is connected to the inner wall of the second housing 102; the third fin 30104 is disposed on the other side of the second substrate 30101, the fourth fin 30105 and the fifth fin 30106 are located on opposite sides of the first sidewall 30102, and the sixth fin 30107 and the seventh fin 30108 are located on opposite sides of the second sidewall 30103; the light source is located on the second substrate 30101 and between the first sidewall 30102 and the second sidewall 30103; the position of the first heat sink 108 corresponds to the position of the first sidewall 30102 and the second sidewall 30103, and the position of the external circulation fan 109 corresponds to the position of the third fin 30104.

[0057] Driven by the internal circulation fan 107, the air inside the first inner cavity S1 of this invention blows over the rear focal length mirror 303, the heat insulation plate 106, the liquid crystal screen and its support 105, and the front focal length mirror 104, carrying heat from the surfaces of these components into the air inside the cavity. The air in the first inner cavity S1 then encounters the cover plate 304, dissipating some of the heat. The air in the first inner cavity S1 continues to flow past the fourth fin 30105 and the sixth fin 30107 on the second heat sink 301, transferring the heat in the air to the fifth fin 30106 and the seventh fin 30108 through thermal conduction.

[0058] During the airflow process in the first inner cavity S1, heat exchange also occurs with the focusing light box 302, carrying the heat from the surface of the focusing light box 302 into the air. The air in the first inner cavity S1 continues to flow, encountering the first fin 10802 and the second fin 10803 on the first heat sink 108, thereby dissipating the heat. Finally, the cooled air re-enters the internal circulation fan 107 to begin a new heat exchange cycle.

[0059] The external circulation fan 109 draws in cool ambient air from the front and sides of the device. As the air is drawn in, it passes through the second fin 10803 of the first heat sink 108, carrying heat into the air. The air blown out by the external circulation fan 109 flows through the third fin 30104 on the second heat sink 301, carrying away most of the heat generated by the LED light panel 305.

[0060] At the same time, such as Figure 10 As shown, the present application provides a first ventilation nozzle 10101 on the first housing 101 and a second ventilation nozzle on the second housing 102, wherein the position of the first ventilation nozzle 10101 corresponds to the position of the fifth fin 30106 and the position of the second ventilation nozzle corresponds to the position of the seventh fin 30108.

[0061] When the external circulation fan 109 is working, the air on both sides of the external circulation fan 109 will be blown from the first ventilation nozzle 10101 to the fifth fin 30106, and from the second ventilation nozzle to the seventh fin 30108, thereby achieving forced convection cooling on both sides of the second heat sink 301.

[0062] In some embodiments, such as Figure 6 and combined Figure 4As shown, the emission light source in this application includes a focusing light chamber 302, a rear Fresnel lens 303, and an LED light panel 305. The LED light panel 305 is disposed on the second substrate 30101 and located between the first sidewall 30102 and the second sidewall 30103. The focusing light chamber 302 is located in the cavity between the first sidewall 30102 and the second sidewall 30103. The rear Fresnel lens 303 is disposed on the side of the focusing light chamber 302 away from the LED light panel 305. The heat insulation plate 106 is located between the LCD screen and the LCD screen bracket 105 and the rear Fresnel lens 303.

[0063] Since the LED light panel 305 is disposed on the second substrate 30101, the heat generated by the LED light panel 305 during operation can be dissipated through the second substrate 30101 and the third fin 30104. At the same time, since the focusing light chamber 302 is located in the cavity between the first sidewall 30102 and the second sidewall 30103, the space is effectively utilized, reducing the overall size of the device.

[0064] In some embodiments, such as Figure 4 As shown, the light source assembly 3 also includes a cover plate 304, which is disposed on one side of the first sidewall 30102 and the second sidewall 30103 located in the external space.

[0065] The cover plate 304 is made of metal. The cover plate 304 not only ensures that the LED light panel 305 located in the first side wall 30102 and the second side wall 30103 is in a sealed space after installation, but also facilitates the heat in the cavity to be discharged to the outside from the cover plate 304.

[0066] In some embodiments, such as Figure 7 As shown, the second heat sink 301 in this application also includes a first support portion 30109 and a second support portion 30110, wherein the first support portion 30109 is disposed at one end of the first sidewall 30102 away from the second substrate 30101, and the second support portion 30110 is disposed at one end of the second sidewall 30103 away from the second substrate 30101; the first support portion 30109 is engaged with the first housing 101, and the second support portion 30110 is engaged with the second housing 102.

[0067] Furthermore, for ease of installation, this application provides a first slot on the first support portion 30109 and a second slot on the second support portion 30110. The first slot engages with a first protrusion on the inner wall of the first housing 101, and the second slot engages with a second protrusion on the inner wall of the second housing 102.

[0068] The present invention also provides a projector, including a projector body and a projector heat dissipation device as described in any of the embodiments of this application, wherein the projector heat dissipation device is disposed on the projector body.

[0069] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A projector heat sink apparatus, comprising: The application relates to a camera, which comprises a body assembly (1), a lens assembly (2) and a light source assembly (3), wherein the body assembly (1) comprises a first shell (101), a second shell (102), a light path component, an inner circulation fan (107), a first radiator (108) and an outer circulation fan (109), the first shell (101) and the second shell (102) are detachably connected to form a first inner cavity and a second inner cavity, the light path component is arranged in the first inner cavity, the inner circulation fan (107), the first radiator (108) and the outer circulation fan (109) are sequentially arranged in the second inner cavity along a first direction, and the position of the inner circulation fan (107) corresponds to the position of the light path component; the lens assembly (2) is arranged on the body assembly (1), and the lens assembly (2) cooperates with the light path component; the light source assembly (3) comprises a second radiator (301) and an emitting light source, the second radiator (301) is arranged on the body assembly (1), and the position of the second radiator (301) corresponds to the positions of the first radiator (108) and the outer circulation fan (109), and the emitting light source is arranged in the second radiator (301); the second radiator (301) comprises a second substrate (30101), a first side wall (30102), a second side wall (30103), a third fin (30104), a fourth fin (30105), a fifth fin (30106), a sixth fin (30107) and a seventh fin (30108); the first side wall (30102) and the second side wall (30103) are arranged on the same side of the second substrate (30101), the first side wall (30102) and the second side wall (30103) are in an inverted eight-shaped structure, one end of the first side wall (30102) away from the second substrate (30101) is connected with the inner wall of the first shell (101), and one end of the second side wall (30103) away from the second substrate (30101) is connected with the inner wall of the second shell (102); the third fin (30104) is arranged on the other side of the second substrate (30101), the fourth fin (30105) and the fifth fin (30106) are arranged on opposite sides of the first side wall (30102), and the sixth fin (30107) and the seventh fin (30108) are arranged on opposite sides of the second side wall (30103); the emitting light source is arranged on the second substrate (30101) and between the first side wall (30102) and the second side wall (30103); the position of the first radiator (108) corresponds to the positions of the first side wall (30102) and the second side wall (30103), and the position of the outer circulation fan (109) corresponds to the position of the third fin (30104). ​ ​ ​ ​ ​ ​ ​ The light source assembly (3) further comprises a cover plate (304) arranged on the side of the first side wall (30102) and the second side wall (30103) located outside the space; The first shell (101) is provided with a first ventilation nozzle (10101), and the second shell (102) is provided with a second ventilation nozzle, the position of the first ventilation nozzle (10101) corresponds to the position of the fifth fin (30106), and the position of the second ventilation nozzle corresponds to the position of the seventh fin (30108).

2. The projector heat sink apparatus of claim 1, wherein The light path member comprises a mirror (103), a front lens (104), a liquid crystal screen and a liquid crystal screen support (105); The mirror (103), the front lens (104) and the liquid crystal screen and the liquid crystal screen support (105) are sequentially arranged in the first inner cavity along the first direction, the mirror (103) is horizontally arranged at a preset angle, and the liquid crystal screen and the liquid crystal screen support (105) are located above the emitting light source.

3. The projector heat sink apparatus of claim 2, wherein, The fuselage assembly (1) further comprises a heat insulation plate (106), the heat insulation plate (106) is arranged in the first inner cavity, and the heat insulation plate (106) is located between the liquid crystal screen and the liquid crystal screen support (105) and the emitting light source.

4. The projector heat sink apparatus of claim 3, wherein, The first heat sink (108) comprises a first base plate (10801), a plurality of first fins (10802) and a plurality of second fins (10803), the first base plate (10801) is arranged in the second inner cavity, the first fins (10802) and the second fins (10803) are arranged on both sides of the first base plate (10801) along the first direction, and gaps are arranged between adjacent two first fins (10802) and between adjacent two second fins (10803).

5. The projector heat sink apparatus of claim 4, wherein, The emitting light source comprises a light collecting funnel (302), a rear lens (303) and an LED lamp plate (305); The LED lamp plate (305) is arranged on the second base plate (30101) and located between the first side wall (30102) and the second side wall (30103); The light collecting funnel (302) is located in the inner cavity between the first side wall (30102) and the second side wall (30103), the rear lens (303) is arranged on the side of the light collecting funnel (302) away from the LED lamp plate (305), and the heat insulation plate (106) is located between the liquid crystal screen and the liquid crystal screen support (105) and the rear lens (303).

6. The projector heat sink device of claim 4, wherein, The second heat sink (301) further comprises a first support portion (30109) and a second support portion (30110), the first support portion (30109) is arranged at one end of the first side wall (30102) away from the second base plate (30101), and the second support portion (30110) is arranged at one end of the second side wall (30103) away from the second base plate (30101); The first support part (30109) is provided with a first clamping groove, and the second support part (30110) is provided with a second clamping groove, the first clamping groove is matched with a first protrusion on the inner wall of the first shell (101), and the second clamping groove is matched with a second protrusion on the inner wall of the second shell (102).

7. A projector characterized by comprising: The projector comprises a projector body and the projector heat dissipation device as claimed in any one of claims 1-6, and the projector heat dissipation device is arranged on the projector body.

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