Projector heat dissipation structure and projector

Abstract

The utility model belongs to the technical field of projectors, and discloses a projector heat dissipation structure and a projector. The projector heat dissipation structure comprises a shell, a heat exchange assembly, a first fan and a second fan, the shell is provided with an inner cavity, a light source module and an LCD module are arranged in the inner cavity, a first air channel and a second air channel are formed in the inner cavity, and both the first air channel and the second air channel flow through the LCD module. The flow direction of air flowing through the LCD module in the first air duct is perpendicular to the flow direction of air flowing through the LCD module in the second air duct. The heat absorption end of the heat exchange assembly is in heat-conducting connection with the light source module. The first fan is arranged at one end of the first air duct, and the other end of the first air duct flows through the first heat dissipation end of the heat exchange assembly. The second fan is arranged at one end of the second air duct, and the other end of the second air duct communicates with the outside of the shell. The projector heat dissipation mechanism can achieve a good heat dissipation effect on a heating device in the projector, can achieve a high heat dissipation cooling effect without increasing the rotating speed of the fan, and enables the noise to be lower when the fan runs.

Description

Technical Field

[0001] This utility model relates to the field of projector technology, and in particular to a projector heat dissipation structure and a projector. Background Technology

[0002] Projection devices have been constantly striving for higher brightness, which has led to a gradual increase in their power consumption and the resulting increase in heat dissipation pressure. Therefore, the requirements for heat dissipation devices are also constantly rising. Existing LCD projectors require heat dissipation devices to cool the LCD module during use, ensuring the normal operation of the LCD module.

[0003] Existing technologies often employ single-fan or single-fan cooling methods, using a single fan to form a cooling path and using airflow to convect heat exchange with the LED module. This approach has the following drawbacks: 1. Due to the presence of structural components and circuit boards inside the projector, there are certain dead zones in the cooling path, requiring increased fan force for effective heat dissipation. This can generate mechanical noise from the fan, affecting the user experience of the projector. 2. Increased fan force generates high temperatures, and prolonged operation in a high-temperature environment will significantly reduce the fan's lifespan.

[0004] Therefore, there is an urgent need to provide a new type of projector heat dissipation structure and projector to solve the above-mentioned technical problems in the prior art. Utility Model Content

[0005] One objective of this invention is to provide a heat dissipation structure for a projector that achieves good heat dissipation for the heat-generating components inside the projector and produces less noise.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The projector's heat dissipation structure includes a housing, a heat exchange component, a first fan, and a second fan. The housing has an inner cavity in which a light source module and an LCD module are disposed. A first air duct and a second air duct are formed within the inner cavity, both of which flow through the LCD module. The airflow direction through the LCD module in the first air duct is perpendicular to the airflow direction through the LCD module in the second air duct. The heat absorption end of the heat exchange component is thermally connected to the light source module. The first fan is disposed at one end of the first air duct, and the other end of the first air duct flows through the first heat dissipation end of the heat exchange component. The second fan is disposed at one end of the second air duct, and the other end of the second air duct is connected to the outside of the housing.

[0008] Optionally, the first air duct includes an inlet section, a heat dissipation section, and an outlet section. The inlet section is provided with the first fan, the heat dissipation section is provided with the LCD module, and the outlet section is provided with the first heat dissipation end. One end of the heat dissipation section along the first direction is connected to the inlet section, and the other end is connected to the outlet section.

[0009] Optionally, the inlet section and the outlet section are spaced apart at both ends of the heat dissipation section along the second direction, the second direction being perpendicular to the first direction, and the airflow direction in the outlet section being the same as the airflow direction in the inlet section; the first direction being perpendicular to the second direction.

[0010] Optionally, the heat exchange component is provided with a first heat dissipation end at one end along the first direction and a second heat dissipation end at the other end, with a heat absorption end provided between the first heat dissipation end and the second heat dissipation end; the inner cavity is also formed with a third air duct that is separated from both the first air duct and the second air duct, and the air in the third air duct flows through the second heat dissipation end.

[0011] Optionally, a third fan is provided at one end of the third air duct away from the first heat dissipation end along the first direction. The inlet of the third fan is located on one side wall of the housing along the first direction, and the outlet of the third fan is directly opposite the second heat dissipation end.

[0012] Optionally, both the first heat dissipation end and the second heat dissipation end are connected to the first air outlet of the housing, and both the first heat dissipation end and the second heat dissipation end are provided with heat dissipation fins, which are parallel to the second direction.

[0013] Optionally, the second air duct includes an air inlet section and a convection section. The convection section is equipped with the LCD module, and the air inlet section is equipped with the second fan. One end of the convection section is equipped with the air inlet section, and the other end is connected to the outside of the housing.

[0014] Optionally, the aforementioned convection section is provided at one end along a third direction, and the aforementioned first direction, the aforementioned second direction, and the aforementioned third direction are perpendicular to each other.

[0015] Optionally, a second air outlet is provided at the other end of the convection section along the third direction, the second air outlet is provided on the side wall of the housing along the third direction, the LCD module is provided with the convection section at one end along the second direction, and the heat dissipation section is provided at the other end, with the outlet of the convection section; or, the convection section and the heat dissipation section are interconnected.

[0016] Another objective of this invention is to provide a projector that includes a heat dissipation structure as described in any of the above embodiments.

[0017] Beneficial effects:

[0018] The projector heat dissipation structure of this invention is specifically designed to cool the LCD module and the light source module within the housing. When cooling the LCD module, a first fan and a second fan are respectively installed in the first and second air ducts within the housing. These fans drive airflow, and the air in both the first and second air ducts flows over the LCD module. The airflow direction through the LCD module in the first air duct is perpendicular to that in the second air duct, thus achieving convective heat dissipation from the LCD module in different directions and angles, resulting in better convective cooling. When cooling the light source module, the heat-absorbing end of the heat exchange component is connected to the light source module, transferring heat from the heat-absorbing end to the first heat-dissipating end. The first fan drives airflow within the first air duct and over the first heat-dissipating end, achieving cyclic heat dissipation from the heat exchange component. This projector heat dissipation mechanism achieves excellent heat dissipation for the heat-generating components within the projector. By using multiple fans to drive air circulation, a high cooling effect can be achieved without increasing fan speed, resulting in lower fan noise during operation. Attached Figure Description

[0019] Figure 1 This is an isometric view of the projector provided in a specific embodiment of this utility model;

[0020] Figure 2 This is a top view of the projector with part of the housing hidden, provided in a specific embodiment of this utility model;

[0021] Figure 3 This is a longitudinal cross-sectional view of the projector provided in a specific embodiment of this utility model.

[0022] In the picture:

[0023] 10. Housing; 101. First air outlet; 102. Second air outlet; 11. Light source module; 12. LCD module; 13. First air duct; 131. Inlet section; 132. Heat dissipation section; 133. Outlet section; 14. Second air duct; 141. Air intake section; 142. Convection section;

[0024] 20. Heat exchange component; 21. Heat absorption end; 22. First heat dissipation end; 221. Heat dissipation fins; 23. Second heat dissipation end;

[0025] 30. First fan;

[0026] 40. Second fan;

[0027] 50. Third fan; 51. Third air duct. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0032] The first direction described in this embodiment is: Figure 2 The X direction shown is the horizontal direction; the second direction is... Figure 2 and Figure 3 The Y direction shown is another horizontal direction perpendicular to the X direction; the third direction is... Figure 3 The Z direction shown is the vertical direction; the first direction, the second direction, and the third direction are all perpendicular to each other.

[0033] like Figure 1 and Figure 2As shown, the projector's heat dissipation structure includes a housing 10, a heat exchange component 20, a first fan 30, and a second fan 40. The housing 10 has an inner cavity in which a light source module 11 and an LCD module 12 are disposed. A first air duct 13 and a second air duct 14 are formed in the inner cavity. Both the first air duct 13 and the second air duct 14 flow through the LCD module 12. The airflow direction of the first air duct 13 flowing through the LCD module 12 is perpendicular to the airflow direction of the second air duct 14 flowing through the LCD module 12. The heat absorption end 21 of the heat exchange component 20 is thermally connected to the light source module 11. The first fan 30 is disposed at one end of the first air duct 13, and the other end of the first air duct 13 flows through the first heat dissipation end 22 of the heat exchange component 20. The second fan 40 is disposed at one end of the second air duct 14, and the other end of the second air duct 14 is connected to the outside of the housing 10.

[0034] In this embodiment, the projector's heat dissipation structure is specifically designed to cool the LCD module 12 and the light source module 11 within the housing 10. When cooling the LCD module 12, a first fan 30 and a second fan 40 are respectively installed in the first air duct 13 and the second air duct 14 within the housing 10. The first fan 30 and the second fan 40 drive airflow, and the air in both the first air duct 13 and the second air duct 14 flows through the LCD module 12. The airflow direction of the first air duct 13 through the LCD module 12 is perpendicular to the first air duct 13. The airflow through the second air duct 14 flows through the LCD module 12, thereby providing convective heat dissipation to the LCD module 12 from different directions and angles, resulting in better convective heat dissipation. When cooling the light source module 11, the heat-absorbing end 21 of the heat exchange component 20 is connected to the light source module 11, transferring heat from the heat-absorbing end 21 to the first heat-dissipating end 22. The first fan 30 drives the airflow within the first air duct 13 and through the first heat-dissipating end 22, thus achieving cyclic heat dissipation of the heat exchange component 20. This projector cooling mechanism can achieve good heat dissipation for the heat-generating components within the projector. By using multiple fans to drive air circulation, a high cooling effect can be achieved without increasing the fan speed, resulting in lower fan noise during operation.

[0035] Please continue to refer to this. Figure 2The first air duct 13 includes an inlet section 131, a heat dissipation section 132, and an outlet section 133. The inlet section 131 is equipped with the first fan 30, the heat dissipation section 132 is equipped with the LCD module 12, and the outlet section 133 is equipped with the first heat dissipation end 22. One end of the heat dissipation section 132 along a first direction is connected to the inlet section 131, and the other end is connected to the outlet section 133. This arrangement allows the first air duct 13 to be extended as much as possible, and the heat dissipation section 132 of the first air duct 13 can have a larger contact area with the LCD module 12, thereby improving the heat dissipation and cooling effect of the first air duct 13 on the LCD module 12.

[0036] In this embodiment, the inlet section 131 and the outlet section 133 are spaced apart at both ends of the heat dissipation section 132 along the second direction, the second direction being perpendicular to the first direction. The airflow direction in the outlet section 133 is the same as the airflow direction in the inlet section 131; the first direction is perpendicular to the second direction. In this embodiment, both the inlet section 131 and the outlet section 133 are parallel to the first direction, forming an S-shaped airflow channel from the inlet section 131, the heat dissipation section 132, and the outlet section 133. This not only increases the length of the airflow path but also reduces the space occupied by the first air duct 13, thereby reducing the volume of the housing 10 and the projector.

[0037] Specifically, the heat exchange component 20 has a first heat dissipation end 22 at one end along the first direction and a second heat dissipation end 23 at the other end, with a heat absorption end 21 between the first heat dissipation end 22 and the second heat dissipation end 23; the inner cavity is also formed with a third air duct 51, which is separated from both the first air duct 13 and the second air duct 14, and the air in the third air duct 51 flows through the second heat dissipation end 23. By configuring the heat exchange component 20 with a first heat dissipation end 22 and a second heat dissipation end 23 at both ends and a heat absorption end 21 in the middle, heat exchange can be performed on the heat absorption end 21 from both ends in the first direction, improving the heat exchange and cooling effect of the heat exchange component 20 on the light source module 11.

[0038] Please continue to refer to this. Figure 2 A third fan 50 is provided at the end of the third air duct 51 away from the first heat dissipation end 22 along the first direction. The inlet of the third fan 50 is located on the side wall of the housing 10 along the first direction, and the outlet of the third fan 50 faces the second heat dissipation end 23. In this embodiment, the third fan 50 is a centrifugal fan that draws air in from the center and discharges air radially to the outer periphery of the third fan 50, thereby driving the air to flow directly towards the second heat dissipation end 23. The relative flow velocity between the air and the second heat dissipation end 23 is greater, resulting in better convective heat transfer.

[0039] Furthermore, both the first heat dissipation end 22 and the second heat dissipation end 23 are connected to the first air outlet 101 of the housing 10. Both the first heat dissipation end 22 and the second heat dissipation end 23 are provided with heat dissipation fins 221, which are parallel to the second direction. The heat dissipation fins 221 can increase the contact area between the first heat dissipation end 22 and the second heat dissipation end 23 and the air, improve the effect of convective heat transfer, and thus better cool the first heat dissipation end 22 and the second heat dissipation end 23.

[0040] like Figure 3 As shown, the second air duct 14 includes an air inlet section 141 and a convection section 142. The LCD module 12 is disposed in the convection section 142, and the second fan 40 is disposed in the air inlet section 141. One end of the convection section 142 is connected to the air inlet section 141, and the other end is connected to the outside of the housing 10. By configuring the second air duct 14 as an air inlet section 141 and a convection section 142, the contact area between the LCD module 12 and the second air duct 14 is increased, and the air can make sufficient contact with the LCD module 12 within the convection section 142, thereby improving the cooling effect of the air on the LCD module 12.

[0041] In this embodiment, the air inlet section 141 is provided at one end of the convection section 142 along the third direction, and the first direction, the second direction, and the third direction are all perpendicular to each other. In this embodiment, the air inlet section 141 is parallel to the second direction, making the longitudinal section of the second air duct 14 L-shaped, thereby reducing the space occupied by the second air duct 14 in the third direction, making the structure of the housing 10 and the projector more compact, reducing the size of the projector, and making it more portable.

[0042] Specifically, the convection section 142 is provided with a second air outlet 102 at the other end along the third direction. The second air outlet 102 is provided on the side wall of the housing 10 along the third direction. The LCD module 12 is provided with the convection section 142 at one end along the second direction and the heat dissipation section 132 at the other end. The outlet of the convection section 142 is provided. Alternatively, the convection section 142 and the heat dissipation section 132 are interconnected. In this embodiment, the second air duct 14 can be separated from the first air duct 13 by the LCD module 12, allowing the first air duct 13 and the second air duct 14 to cool both sides of the LCD module 12 respectively, resulting in better cooling and independent airflow, thus reducing noise. Alternatively, the first air duct 13 and the second air duct 14 can be interconnected, with the convection section 142 of the first air duct 13 and the heat dissipation section 132 of the second air duct 14 overlapping. This allows one side of the LCD module 12 to simultaneously have air flowing along both the first and third directions, creating a certain swirling effect. The air can then flow fully across the surface of the LCD module 12, resulting in better heat dissipation. Simultaneously, the airflow from the first fan 30 and the second fan 40 flows towards the first heat dissipation end 22, further enhancing the heat dissipation effect of the heat exchange component 20 on the light source module 11. The structures of the first air duct 13 and the second air duct 14 described above can be selected by those skilled in the art according to specific needs, and will not be elaborated further here.

[0043] This embodiment also provides a projector including a projector heat dissipation structure as described in any of the above solutions. The projector uses the projector heat dissipation mechanism described in any of the above solutions, thus achieving the beneficial effects of the projector heat dissipation mechanism described in any of the above solutions. Specifically, the projector can use the first air duct 13 and the second air duct 14 to perform convection heat dissipation on the LCD module 12 in different directions and at different angles, resulting in better convection heat dissipation. When cooling the light source module 11, the heat absorption end 21 of the heat exchange component 20 is heat-exchange connected to the light source module 11, thereby conducting the heat from the light source module 11 from the heat absorption end 21 to the first heat dissipation end 22. The airflow within the first air duct 13 achieves cyclic heat dissipation of the heat exchange component 20. The projector heat dissipation mechanism used in this projector can achieve good heat dissipation for the heat-generating components within the projector. By using multiple fans to drive air circulation, a high cooling effect can be achieved without increasing the fan speed, resulting in lower fan noise during operation.

[0044] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A heat dissipation structure for a projector, characterized in that, include: A housing (10) has an inner cavity in which a light source module (11) and an LCD module (12) are disposed. A first air duct (13) and a second air duct (14) are formed in the inner cavity. Both the first air duct (13) and the second air duct (14) flow through the LCD module (12). The airflow direction of the first air duct (13) flowing through the LCD module (12) is perpendicular to the airflow direction of the second air duct (14) flowing through the LCD module (12). A heat exchange assembly (20) is provided, wherein the heat-absorbing end (21) of the heat exchange assembly (20) is thermally connected to the light source module (11); The first fan (30) is disposed at one end of the first air duct (13), and the other end of the first air duct (13) flows through the first heat dissipation end (22) of the heat exchange component (20); The second fan (40) is disposed at one end of the second air duct (14), and the other end of the second air duct (14) is connected to the outside of the housing (10).

2. The projector heat dissipation structure according to claim 1, wherein, The first air duct (13) includes an inlet section (131), a heat dissipation section (132), and an outlet section (133). The inlet section (131) is provided with the first fan (30), the heat dissipation section (132) is provided with the LCD module (12), and the outlet section (133) is provided with the first heat dissipation end (22). One end of the heat dissipation section (132) along the first direction is connected to the inlet section (131), and the other end is connected to the outlet section (133).

3. The projector heat dissipation structure according to claim 2, wherein, The inlet section (131) and the outlet section (133) are respectively disposed at both ends of the heat dissipation section (132) along the second direction, the second direction being perpendicular to the first direction, the air flow direction in the outlet section (133) being the same as the air flow direction in the inlet section (131); the first direction being perpendicular to the second direction.

4. The projector heat dissipation structure according to claim 3, wherein, The heat exchange component (20) has a first heat dissipation end (22) at one end along the first direction and a second heat dissipation end (23) at the other end. The heat absorption end (21) is provided between the first heat dissipation end (22) and the second heat dissipation end (23). The inner cavity is also formed with a third air duct (51) that is separated from both the first air duct (13) and the second air duct (14). The air in the third air duct (51) flows through the second heat dissipation end (23).

5. The projector heat dissipation structure according to claim 4, wherein, The third air duct (51) is provided with a third fan (50) at one end away from the first heat dissipation end (22) along the first direction. The inlet of the third fan (50) is located on one side wall of the housing (10) along the first direction, and the outlet of the third fan (50) is directly opposite the second heat dissipation end (23).

6. The projector heat dissipation structure according to claim 5, wherein, The first heat dissipation end (22) and the second heat dissipation end (23) are both connected to the first air outlet (101) of the housing (10). The first heat dissipation end (22) and the second heat dissipation end (23) are both provided with heat dissipation fins (221), and the heat dissipation fins (221) are parallel to the second direction.

7. The projector heat dissipation structure according to claim 3, wherein, The second air duct (14) includes an air inlet section (141) and a convection section (142). The convection section (142) is provided with the LCD module (12), and the air inlet section (141) is provided with the second fan (40). One end of the convection section (142) is provided with the air inlet section (141), and the other end is connected to the outside of the housing (10).

8. The projector heat dissipation structure according to claim 7, wherein, The convection section (142) is provided with the air inlet section (141) at one end along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

9. The projector heat sink structure of claim 8, wherein, The convection section (142) is provided with a second air outlet (102) at the other end along the third direction. The second air outlet (102) is provided on the side wall of the housing (10) along the third direction. The LCD module (12) is provided with the convection section (142) at one end along the second direction and with the heat dissipation section (132) at the other end. The outlet of the convection section (142) is... Alternatively, the convection section (142) and the heat dissipation section (132) are interconnected.

10. A projector, characterized in that, The projector heat dissipation structure includes any one of claims 1 to 9.

Images