A high-efficiency convection heat dissipation system for LCD projection

Abstract

This invention provides a high-efficiency convection cooling system for LCD projectors, relating to the field of projection equipment technology. It includes an optical engine body, on which a lens module and optical components are mounted. An optical path cover is fixedly mounted on the optical engine body, pressing and fixing the lens module and optical components to the inner side. A light source + heat dissipation module is fixedly mounted on one side of the optical engine body near the optical components. An internal circulation fan is fixedly mounted on the lower side of the optical engine body. A convection cooling module is fixedly mounted on one side of the internal circulation fan, below the optical components. An axial fan is fixedly mounted on the optical engine body, on one side of the convection cooling module, with the outer side of the axial fan corresponding to the position of the light source + heat dissipation module. This invention significantly improves heat dissipation efficiency and effectively controls the operating temperature of the optical components through the coupling design of the internal circulation air duct and the external heat dissipation air duct, meeting the long-term stable operation requirements of high-brightness projectors. The overall structure is simple and easy to assemble.

Description

Technical Field

[0001] This utility model relates to the field of projection equipment technology, specifically a high-efficiency convection heat dissipation system for LCD projection. Background Technology

[0002] With the rapid development of LCD projection technology, high-brightness projection devices are increasingly widely used in commercial, educational, and home theater applications. However, the heat accumulation generated by high-brightness light sources and optical components during operation has become a key bottleneck restricting device performance and lifespan. Traditional heat dissipation solutions often employ a single airflow design or passive cooling structure, which suffers from low heat conduction efficiency, high thermal resistance, and lengthy heat dissipation paths, making it difficult to meet the temperature control requirements under high-load operating scenarios. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, this utility model provides an efficient convection heat dissipation system for LCD projection, which aims to solve the problems of low assembly efficiency caused by the complexity of the existing optical engine structure, insufficient thermal conductivity of the heat dissipation module, and heat retention caused by the excessively long heat dissipation air duct path.

[0004] This utility model provides a high-efficiency convection cooling system for LCD projection, characterized by comprising an optical engine body, on which a lens module and optical components are mounted. An optical path cover is fixedly mounted on the optical engine body, pressing and fixing the lens module and optical components to the inner side. A light-shielding plate is provided on one side of the optical path cover corresponding to the position of the optical components. An air duct cover fixedly connected to the optical engine body is provided on the outer side of the optical path cover. A light source + heat dissipation module is fixedly mounted on one side of the optical engine body near the optical components. An internal circulation fan is fixedly mounted on the lower side of the optical engine body. A bottom cover is fixedly mounted on the lower side of the internal circulation fan. A convection cooling module is fixedly mounted on one side of the internal circulation fan below the optical components. An axial flow fan is fixedly mounted on one side of the optical engine body and on one side of the convection cooling module, with the outer side of the axial flow fan corresponding to the position of the light source + heat dissipation module. An air guide cover covering the convection cooling module and axial flow fan is provided on the lower side of the optical engine body, with the lower part of one side of the convection cooling module located outside the air guide cover.

[0005] In a preferred embodiment, the internal circulation fan, the convection heat dissipation module, the optical components, and the internal structure of the optomechanical body constitute an internal circulation air duct.

[0006] In a preferred embodiment, the convection cooling module, the axial fan, and the light source + cooling module constitute an external cooling air duct.

[0007] In a preferred embodiment, the convection heat dissipation module includes a first combined fin and a second combined fin. The first combined fin is disposed on one side of the second combined fin. A metal heat-conducting plate is disposed between the first combined fin and the second combined fin. A copper heat pipe is connected between the sides of the first combined fin and the second combined fin.

[0008] In a preferred embodiment, the first combination of fins faces the air outlet of the internal circulation fan, and one side of the second combination of fins is located on the outside of the air guide cover.

[0009] In a preferred embodiment, the first and second combined fins are fixedly connected to both sides of the metal heat-conducting plate by welding, and the two ends of the copper heat pipe are fixedly connected to the first and second combined fins by welding.

[0010] The technical effects and advantages of this utility model are as follows:

[0011] This invention achieves a heat dissipation path for optical components and the light source through a coupled design of an internal circulation air duct and an external heat dissipation air duct. The internal circulation rapidly transfers core heat from the optical components, while the external circulation completes two-stage heat dissipation through axial fan convection, significantly improving heat dissipation efficiency. A combined structure of fins, a metal heat-conducting plate, and a copper heat pipe is adopted. The metal heat-conducting plate isolates the internal and external air while the copper heat pipe completes lateral heat conduction, maximizing the heat dissipation area of ​​the fins and effectively reducing thermal resistance. Through the synergistic effect of the dual air ducts, the operating temperature of the optical components is effectively controlled, extending the lifespan of the light source module and meeting the long-term stable operation requirements of high-brightness projectors. The overall structure is simple and easy to assemble. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the exploded structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the convection heat dissipation module structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the internal circulation air duct and the external heat dissipation air duct structure of this utility model;

[0015] In the diagram: 1-Air duct cover; 2-Optical path cover; 3-Lens module; 4-Internal circulation fan; 5-Bottom cover; 6-Convection heat dissipation module; 7-Light shield; 8-Optical components; 9-Optical engine body; 10-Light source + heat dissipation module; 11-Axial fan; 12-Air guide cover; 13-Internal circulation air duct; 14-External heat dissipation air duct; 61-First combination fins; 62-Second combination fins; 63-Metal heat conduction plate; 64-Copper heat pipe. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figure 1 As shown, an efficient convection cooling system for LCD projection includes an optical engine body 9, on which a lens module 3 and optical components 8 are mounted. An optical path cover 2 is fixedly mounted on the optical engine body 9, pressing and fixing the lens module 3 and optical components 8 to the inner side. A light-shielding plate 7 is provided on one side of the optical path cover 2 corresponding to the position of the optical components 8. A duct cover 1 fixedly connected to the optical engine body 9 is provided on the outer side of the optical path cover 2. A light source + heat dissipation module 10 is fixedly mounted on one side of the optical engine body 9 near the position of the optical components 8. An internal circulation fan 4 is fixedly installed on the lower side of the optical engine body 9. A bottom cover 5 is fixedly installed on the lower side of the internal circulation fan 4. A convection heat dissipation module 6 is fixedly installed on one side of the internal circulation fan 4 and below the optical device 8. An axial flow fan 11 is fixedly installed on one side of the optical engine body 9 and on one side of the convection heat dissipation module 6. The outer side of the axial flow fan 11 corresponds to the position of the light source + heat dissipation module 10. An air guide cover 12 is provided on the lower side of the optical engine body 9, covering the convection heat dissipation module 6 and the axial flow fan 11. The lower part of one side of the convection heat dissipation module 6 is located on the outer side of the air guide cover 12.

[0018] like Figure 2 As shown, the convection heat dissipation module 6 includes a first combined fin 61 and a second combined fin 62. The first combined fin 61 is disposed on one side of the second combined fin 62. A metal heat-conducting plate 63 is disposed between the first combined fin 61 and the second combined fin 62. A copper heat pipe 64 is connected between the sides of the first combined fin 61 and the second combined fin 62.

[0019] like Figure 3 As shown, the internal circulation fan 4, the convection heat dissipation module 6, the optical device 8, and the internal structure of the optomechanical body 9 constitute the internal circulation air duct 13. The flowing air generated by the internal circulation fan 4 passes through the convection heat dissipation 6 and then through the optical device 8 to carry away the heat of the optical device 8. After passing through the internal structure of the optomechanical body 9, it circulates back to the convection heat dissipation 6. The convection heat dissipation 6 conducts the heat generated by the optical device 8 during operation to the outside through the copper heat pipe 64.

[0020] like Figure 3As shown, the convection cooling module 6, the axial fan 11, and the light source + heat dissipation module 10 constitute the external heat dissipation duct 14. The convection cooling module 6 located outside the air guide cover 12 has an air inlet on one side. Driven by the axial fan 11, the cold air in the air inlet first passes through the convection cooling module 6 to remove the heat generated during the operation of the internal optical components 8. During the process of the axial fan 11 expelling heat, the heat is also expelled through the light source + heat sink module 10, completing two-stage heat dissipation and achieving bidirectional heat dissipation.

[0021] like Figure 1 and 2 As shown, the first set of fins 61 faces the air outlet of the internal circulation fan 4, and one side of the second set of fins 62 is located outside the air guide cover 12. This facilitates the formation of the internal circulation air duct 13 and the external heat dissipation air duct 14.

[0022] like Figure 2 As shown, the first combined fin 61 and the second combined fin 62 are fixedly connected to both sides of the metal heat-conducting plate 63 by welding. The two ends of the copper heat pipe 64 are also fixedly connected to the first combined fin 61 and the second combined fin 62 by welding. This process further improves the thermal conductivity and efficiency of the first combined fin 61 and the second combined fin 62. The metal heat-conducting plate 63 serves to conduct heat and isolate the internal and external air. With each air circulation cycle of the internal circulation fan 4, the heat from the optical device 8 is conducted through the air to the convection cooling module 6 and absorbed by the first combined fin 61. Through the temperature difference between the internal and external surfaces, the heat from the first combined fin 61 is transferred to the second combined fin 62 by the metal heat-conducting plate 63 and the copper heat pipe 64. The second combined fin 62 then operates continuously under the action of the axial flow fan 11.

[0023] The assembly of this utility model's optomechanical integrated structure is simpler, the fin welding of the convection heat dissipation module 6 and the heat pipe have higher thermal conductivity, the heat dissipation airflow path is shorter and straighter, and the heat dissipation efficiency is better.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency convection heat dissipation system for LCD projection, characterized in that, The system includes an optical engine body (9), on which a lens module (3) and optical components (8) are mounted. An optical path cover (2) is fixedly mounted on the optical engine body (9), which presses and fixes the lens module (3) and optical components (8) on the inside. A light shield (7) is provided on one side of the optical path cover (2) corresponding to the position of the optical components (8). A duct cover (1) fixedly connected to the optical engine body (9) is provided on the outside of the optical path cover (2). A light source + heat dissipation module (10) is fixedly mounted on one side of the optical engine body (9) near the position of the optical components (8). The lower side of the optical engine body (9) is fixed with a light source + heat dissipation module (10). An internal circulation fan (4) is provided, and a bottom cover (5) is fixedly provided on the lower side of the internal circulation fan (4). A convection heat dissipation module (6) is fixedly provided on one side of the internal circulation fan (4) and below the optical device (8). An axial flow fan (11) is fixedly provided on the optical engine body (9) and on one side of the convection heat dissipation module (6). The outer side of the axial flow fan (11) corresponds to the position of the light source + heat dissipation module (10). A wind guide cover (12) is provided on the lower side of the optical engine body (9) and covers the convection heat dissipation module (6) and the axial flow fan (11). The lower part of one side of the convection heat dissipation module (6) is located on the outer side of the wind guide cover (12).

2. The high-efficiency convection heat dissipation system for LCD projection according to claim 1, characterized in that: The internal circulation fan (4), together with the convection heat dissipation module (6), optical device (8) and optomechanical body (9), constitute an internal circulation air duct (13).

3. The high-efficiency convection heat dissipation system for LCD projection according to claim 1, characterized in that: The convection cooling module (6), the axial fan (11), and the light source + cooling module (10) constitute an external cooling air duct (14).

4. The high-efficiency convection heat dissipation system for LCD projection according to claim 1, characterized in that: The convection heat dissipation module (6) includes a first combined fin (61) and a second combined fin (62). The first combined fin (61) is disposed on one side of the second combined fin (62). A metal heat-conducting plate (63) is disposed between the first combined fin (61) and the second combined fin (62). A copper heat pipe (64) is connected between the sides of the first combined fin (61) and the second combined fin (62).

5. The high-efficiency convection heat dissipation system for LCD projection according to claim 4, characterized in that: The first combination fin (61) faces the air outlet of the internal circulation fan (4), and one side of the second combination fin (62) is located outside the air guide cover (12).

6. The high-efficiency convection heat dissipation system for LCD projection according to claim 4, characterized in that: The first combined fin (61) and the second combined fin (62) are fixedly connected to both sides of the metal heat-conducting plate (63) by welding. The two ends of the copper heat pipe (64) are fixedly connected to the first combined fin (61) and the second combined fin (62) by welding.

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