A projector heat dissipation system

Abstract

This utility model discloses a projector heat dissipation system, including a housing, a PCB board, a housing compartment, and a fan. Ventilation holes are provided at both ends of the housing. The PCB board is disposed on top of the housing compartment. The housing compartment is disposed within the housing and is used to house the projector's optical and electronic components. An air duct is provided in the middle of the housing compartment, and an air guide is provided at the top of the housing compartment, located above the upper opening of the air duct, with the opening of the air guide facing the PCB board. The fan is disposed within the housing and located below the housing compartment. The fan's inlet corresponds to the lower opening of the air duct, and the fan's outlet faces the ventilation hole on one side of the housing. When air enters the air guide, it can pass through the PCB board, improving the PCB board's heat dissipation efficiency. When air passes through the air duct, it can carry away the heat dissipated by the housing compartment, improving the housing compartment's heat dissipation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of projector technology, and more particularly to a projector heat dissipation system. Background Technology

[0002] A projector is a device that can project videos, images, text, etc. onto a screen for display. It is widely used in homes, offices, schools, cinemas, and other places.

[0003] Projectors contain a large number of electronic components. With the development of technology, the performance of electronic components is becoming more and more powerful, and the requirements for heat dissipation are becoming more and more stringent. Projectors generate a lot of heat during operation. Traditional projectors have slow heat dissipation efficiency and cannot dissipate heat quickly and comprehensively, especially the PCB board. If heat dissipation cannot be done quickly, it will affect the performance of the projector and will not be conducive to improving the user experience. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a projector heat dissipation system to solve the technical problem of slow heat dissipation efficiency in the existing technology.

[0005] This utility model is achieved by the following technical solution: a projector heat dissipation system, including a housing, a PCB board, a housing compartment and a fan;

[0006] Ventilation holes are provided at both ends of the housing;

[0007] The PCB board is disposed on the top of the containment chamber;

[0008] The receiving chamber is disposed inside the housing. The receiving chamber is used to house the optical devices and electronic components of the projector. An air duct is provided in the middle of the receiving chamber, and an air guide is provided at the top of the receiving chamber. The air guide is located above the upper opening of the air duct, and the opening of the air guide faces the PCB board.

[0009] The fan is disposed inside the housing and is located below the containment chamber. The air inlet of the fan corresponds to the lower opening of the air duct, and the air outlet of the fan faces the ventilation hole on one side of the housing.

[0010] In one possible implementation, a plurality of first air guide vanes are evenly spaced on the inner wall of the air guide section.

[0011] In one possible implementation, the middle of the containment chamber is provided with a plurality of heat dissipation holes at intervals, and the heat dissipation holes are located near the back of the air guide, with the lower opening of the heat dissipation holes corresponding to the air inlet of the fan.

[0012] In one possible implementation, the bottom surface of the containment chamber is provided with a plurality of second air guide vanes at even intervals, and the second air guide vanes correspond to the air outlet of the fan.

[0013] In one possible implementation, a plurality of third air guide vanes are evenly spaced on the bottom wall of the housing, and the upper end face of each third air guide vane is in contact with the lower end face of each second air guide vane.

[0014] In one possible implementation, the side end of the containment chamber is provided with heat dissipation fins, which are located outside the second and third air guides.

[0015] In one possible implementation, the fan includes an upper shell and a lower shell, the upper shell being fixedly connected to the lower end of the receiving chamber, the top surface of the upper shell having an air inlet, the lower shell being fixedly connected to the bottom wall of the housing, and the upper shell and the lower shell being snap-fitted together.

[0016] In one possible implementation, a bracket is also included, which is rotatably connected to the housing;

[0017] The bracket is provided with a rotating shaft, and the side wall of the housing is provided with a rotating hole, and the rotating shaft can be rotatably inserted into the rotating hole;

[0018] The side wall of the housing is provided with a rotating groove, and a first limiting protrusion is provided in the rotating groove. The bracket is provided with a second limiting protrusion, which extends into the rotating groove and can contact the first limiting protrusion.

[0019] In one possible implementation, the side wall of the containment chamber is provided with a groove, in which dust-removing foam is placed, and a foam cover is detachably provided on the housing, the foam cover covering the groove.

[0020] In one possible implementation, the outer wall of the housing has multiple heat dissipation grooves arranged in an array.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows: When the fan is working, air enters from the ventilation hole at one end of the housing, then enters the air duct from the air guide section, and is drawn into the fan through the air duct. Then the fan blows the air out from the ventilation hole at the other end of the housing to form a wind circulation. When the air enters the air guide section, it can pass through the PCB board, thereby carrying away the heat dissipation of the PCB board and improving the heat dissipation efficiency of the PCB board. When the air passes through the air duct, it can carry away the heat dissipation of the containment chamber, thereby improving the heat dissipation efficiency of the containment chamber. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the heat dissipation system of the projector according to the present invention;

[0023] Figure 2 This is an exploded view of the projector heat dissipation system of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the receiving chamber in the projector heat dissipation system of this utility model;

[0025] Figure 4 This is a schematic diagram of the housing compartment in the projector heat dissipation system of this utility model from another perspective.

[0026] Figure 5 This is a schematic diagram of the housing structure in the projector heat dissipation system of this utility model.

[0027] In the picture:

[0028] 1. Housing; 11. Ventilation hole; 12. Third air guide vane; 13. Rotary hole; 14. Rotary groove; 15. First limiting protrusion; 16. Foam cover; 17. Heat dissipation groove;

[0029] 2. PCB board;

[0030] 3. Containment chamber; 31. Air duct; 32. Air guide section; 33. First air guide vane; 34. Heat dissipation hole; 35. Second air guide vane; 36. Heat dissipation fins; 37. Groove; 38. Dust removal foam; 39. Cable clip;

[0031] 4. Fan; 41. Upper casing; 42. Lower casing;

[0032] 5. Bracket; 51. Rotating shaft; 52. Second limiting protrusion. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0036] like Figure 1-5 The projector cooling system shown includes a housing 1, a PCB board 2, a housing 3, and a fan 4. Ventilation holes 11 are provided at both ends of the housing 1. The PCB board 2 is located on top of the housing 3. The housing 3 is located inside the housing 1 and is used to house the optical devices and electronic components of the projector. An air duct 31 is provided in the middle of the housing 3, and an air guide 32 is provided on the top of the housing 3. The air guide 32 is located above the upper opening of the air duct 31, and the opening of the air guide 32 faces the PCB board 2. The fan 4 is located inside the housing 1 and below the housing 3. The air inlet of the fan 4 corresponds to the lower opening of the air duct 31, and the air outlet of the fan 4 faces the ventilation hole 11 on one side of the housing 1. It should be noted that the housing 1 has studs, and the receiving chamber 3 is fixedly mounted on the studs so that the fan 4 is located below the receiving chamber 3. The PCB board 2 can be fixed to the top surface of the receiving chamber 3 with bolts, and part of the PCB board 2 is located on the top surface of the receiving chamber 3, while another part is suspended outside the receiving chamber 3 to improve the heat dissipation efficiency of the PCB board 2. In addition, since the PCB board 2 needs to be connected to electronic components, the top of the receiving chamber 3 is also provided with a wire clamp 39, and the wires pass through the wire clamp 39 to ensure the stability of the wire passage; the housing 1 has two The side ventilation holes 11 are used for air intake and exhaust respectively. The bottom wall of the housing 1 is also provided with through holes for natural heat dissipation. When the fan 4 is working, the air enters the housing 1 through the ventilation hole 11 on one side and flows through the air guide 32, passing through the PCB board 2 to carry away the heat of the PCB board 2. The air guide 32 can guide the air, allowing the air to smoothly enter the air duct 31. When the air passes through the air duct 31, it carries away the heat of the containment chamber 3 and finally blows the heat out through the ventilation hole 11 on the other side, which greatly improves the heat dissipation efficiency of the projector.

[0037] The beneficial effects of this utility model are as follows: When the fan 4 is working, air enters from the ventilation hole 11 at one end of the housing 1, and then enters the air duct 31 from the air guide 32. After passing through the air duct 31, it is drawn into the fan 4. Then the fan 4 blows the air out from the ventilation hole 11 at the other end of the housing 1 to form a wind circulation. When the air enters the air guide 32, it can pass through the PCB board 2, thereby carrying away the heat dissipation of the PCB board 2 and improving the heat dissipation efficiency of the PCB board 2. When the air passes through the air duct 31, it can carry away the heat dissipation of the receiving chamber 3 and improve the heat dissipation efficiency of the receiving chamber 3.

[0038] Please refer to Figure 3 In one possible implementation, a plurality of first air guide vanes 33 are evenly spaced on the inner wall of the air guide section 32. It should be noted that the arrangement of the first air guide vanes 33 can guide the air, and since the air guide section 32 is part of the containment chamber 3 and the first air guide vanes 33 are part of the air guide section 32, the first air guide vanes 33 can increase the contact area between the containment chamber 3 and the air, thereby enabling the air to carry away more heat and improving the heat dissipation efficiency of the containment chamber 3.

[0039] Please refer to Figure 2 In one possible implementation, the middle of the containment chamber 3 is provided with a plurality of heat dissipation holes 34 at intervals, and the heat dissipation holes 34 are located near the back of the air guide section 32, with the lower opening of the heat dissipation holes 34 corresponding to the air inlet of the fan 4. It should be noted that when the fan 4 is working, the heat dissipation holes 34 can also be used to ventilate the fan 4, which can improve the air intake efficiency of the fan 4 and further improve the heat dissipation efficiency of the containment chamber 3. Most of the air required by the fan 4 when it is drawing air is provided by the air duct 31, and a small part is provided by the heat dissipation holes 34. Furthermore, the heat dissipation holes 34 are located on the back of the air guide section 32 and can be offset from the air guide section 32. Therefore, the lower end of the ventilation hole 11 on the housing 1 corresponding to the air outlet of the fan 4 is used for air outlet, while the upper end can also be used for air inlet. The air entering from here can enter the fan 4 through the heat dissipation holes 34.

[0040] Please refer to Figure 4 In one possible implementation, a plurality of second air guide vanes 35 are evenly spaced on the bottom surface of the containment chamber 3, and the second air guide vanes 35 correspond to the air outlet of the fan 4. It should be noted that the second air guide vanes 35 are located at the air outlet of the fan 4, and the second air guide vanes 35 extend along the air flow path, so that the air blown out by the fan 4 flows along the second air guide vanes 35 to guide the air. Furthermore, the second air guide vanes 35 are also part of the containment chamber 3, which can increase the contact area between the containment chamber 3 and the air, thereby improving the heat dissipation efficiency of the containment chamber 3.

[0041] Please refer to Figure 5In one possible implementation, a plurality of third air guide vanes 12 are evenly spaced on the bottom wall of the housing 1, with the upper end face of each third air guide vane 12 corresponding to and contacting the lower end face of each second air guide vane 35. It should be noted that the second air guide vanes 35 and the third air guide vanes 12 have the same structure and number. The upper and lower contact between each second air guide vane 35 and each third air guide vane 12 corresponds to the entire air outlet of the fan 4, ensuring that all the air blown out by the fan 4 passes through the air guide vanes, thereby improving heat dissipation efficiency. Furthermore, the cooperation between the second air guide vanes 35 and the third air guide vanes 12 also helps to balance airflow, reduce noise, and prevent air backflow, which is beneficial to improving the user experience.

[0042] Please refer to Figure 2 In one possible implementation, the side end of the receiving chamber 3 is provided with heat dissipation fins 36, which are located outside the second air guide fin 35 and the third air guide fin 12. It should be noted that the heat dissipation fins 36 are located close to the ventilation hole 11 of the housing 1, and the lower end of the heat dissipation fins 36 extends downward to correspond to the third air guide fin 12, so that the air blown out by the fan 4 passes through the second air guide fin 35 and the third air guide fin 12 and then through the heat dissipation fins 36 before being blown out of the housing 1 through the ventilation hole 11, which greatly improves the heat dissipation efficiency of the projector.

[0043] Please refer to Figure 4 In one possible implementation, the fan 4 includes an upper shell 41 and a lower shell 42. The upper shell 41 is fixedly connected to the lower end of the receiving chamber 3, and the top surface of the upper shell 41 has an air inlet. The lower shell 42 is fixedly connected to the bottom wall of the housing 1, and the upper shell 41 and the lower shell 42 are snap-fitted together. It should be noted that the fan 4 also includes fan blades (not shown in the figure). The fan blades are rotatably mounted on the rotating shaft 51 of the lower shell 42, and the fan blades are driven to rotate by a motor. When the fan blades rotate, air is drawn in from the upper opening of the fan 4 and discharged from the side opening. The bottom of the housing 1 has a fan 4 mounting area to facilitate quick positioning and installation of the fan 4 on the housing 1. The upper shell 41 of the fan 4 can be fixedly connected to the receiving chamber 3 by bolts, which ensures that the fan 4 can only draw air from the air duct 31 and the heat dissipation hole 34 when drawing air, thus ensuring the stability of air circulation and improving the overall structural stability of the projector.

[0044] Please refer to Figure 2In one possible implementation, it also includes a bracket 5, which is rotatably connected to the housing 1; the bracket 5 is provided with a rotating shaft 51, and the side wall of the housing 1 is provided with a rotating hole 13, into which the rotating shaft 51 can be rotatably inserted; the side wall of the housing 1 is provided with a rotating groove 14, and a first limiting protrusion 15 is provided in the rotating groove 14; the bracket 5 is provided with a second limiting protrusion 52, which extends into the rotating groove 14 and can contact the first limiting protrusion 15. It should be noted that the bracket 5 has a base plate and two side arms on both sides of the base plate. The upper ends of the two side arms are rotatably connected to the two sides of the housing 1 to realize the adjustable projection angle of the projector. The rotating groove 14 is annular, and the rotating hole 13 is located in the center of the rotating groove 14. The second limiting protrusion 52 is arc-shaped and is arranged around the rotating shaft 51. After the rotating shaft 51 is inserted into the rotating hole 13, the second limiting protrusion 52 extends into the rotating groove 14. The first limiting protrusion 15 rotates with the housing 1. After the first limiting protrusion 15 rotates a certain arc, it can abut against the second limiting protrusion 52. The cooperation between the first limiting protrusion 15 and the second limiting protrusion 52 can limit the rotation angle of the housing 1 and prevent it from rotating without restriction.

[0045] Please refer to Figure 3 In one possible implementation, the side wall of the receiving chamber 3 is provided with a groove 37, and a dust-removing foam 38 is placed in the groove 37. A foam cover 16 is detachably provided on the housing 1, covering the groove 37. It should be noted that the foam cover 16 can be detachably connected to the housing 1 by means of a snap-fit, so as to facilitate the installation / removal of the foam cover 16. During the use of the projector, some dust spots may appear on its lens, affecting the user's viewing. If the user wipes it with a tissue or cloth, it may not only not be clean, but may also cause the dust spots to spread. At this time, the user only needs to remove the foam cover 16 and use the dust-removing foam 38 to clean the dust spots, which is very convenient and greatly improves the user experience.

[0046] Please refer to Figure 1 Multiple heat dissipation slots 17 are arranged in an array on the outer wall of the housing 1. It is easy to understand that the arrangement of the heat dissipation slots 17 can accelerate the natural heat dissipation of the housing 1, which is beneficial to improving the heat dissipation efficiency of the projector.

[0047] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A projector heat dissipation system, characterized in that, Includes the casing, PCB board, containment chamber, and fan; Ventilation holes are provided at both ends of the housing; The PCB board is disposed on the top of the containment chamber; The receiving chamber is disposed inside the housing. The receiving chamber is used to house the optical devices and electronic components of the projector. An air duct is provided in the middle of the receiving chamber, and an air guide is provided at the top of the receiving chamber. The air guide is located above the upper opening of the air duct, and the opening of the air guide faces the PCB board. The fan is disposed inside the housing and is located below the containment chamber. The air inlet of the fan corresponds to the lower opening of the air duct, and the air outlet of the fan faces the ventilation hole on one side of the housing.

2. The projector heat dissipation system as described in claim 1, characterized in that, Multiple first air guide vanes are evenly spaced on the inner wall of the air guide section.

3. The projector heat dissipation system as described in claim 1, characterized in that, The containment chamber is also provided with a number of heat dissipation holes at intervals in the middle, and the heat dissipation holes are located near the back of the air guide section, with the lower opening of the heat dissipation holes corresponding to the air inlet of the fan.

4. The projector heat dissipation system as described in claim 1, characterized in that, The bottom surface of the containment chamber is evenly spaced with multiple second air guide vanes, which correspond to the air outlet of the fan.

5. The projector heat dissipation system as described in claim 4, characterized in that, The bottom wall of the housing is provided with a plurality of third air guide vanes at even intervals, and the upper end face of each third air guide vane is in contact with the lower end face of each second air guide vane.

6. The projector heat dissipation system as described in claim 5, characterized in that, The containment chamber is provided with heat dissipation fins on its side, which are located outside the second and third air guides.

7. The projector heat dissipation system as described in claim 1, characterized in that, The fan includes an upper shell and a lower shell. The upper shell is fixedly connected to the lower end of the receiving chamber. The top surface of the upper shell has an air inlet. The lower shell is fixedly connected to the bottom wall of the housing. The upper shell and the lower shell are snap-fitted together.

8. The projector heat dissipation system as described in claim 1, characterized in that, It also includes a bracket, which is rotatably connected to the housing; The bracket is provided with a rotating shaft, and the side wall of the housing is provided with a rotating hole, and the rotating shaft can be rotatably inserted into the rotating hole; The side wall of the housing is provided with a rotating groove, and a first limiting protrusion is provided in the rotating groove. The bracket is provided with a second limiting protrusion, which extends into the rotating groove and can contact the first limiting protrusion.

9. The projector heat dissipation system as described in claim 1, characterized in that, The side wall of the containment chamber is provided with a groove, in which dust removal foam is placed. A foam cover is detachably provided on the shell, and the foam cover covers the groove.

10. The projector heat dissipation system as described in claim 1, characterized in that, The outer wall of the housing has multiple heat dissipation grooves arranged in an array.

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