Heat dissipation module of illumination lens

Abstract

The utility model relates to the technical field of illumination lenses, in particular to a heat dissipation module of an illumination lens, which comprises the illumination lens, an annular sleeve is arranged on the outer wall surface of the illumination lens in a surrounding manner, a cavity is formed by the sleeve and the outer wall surface of the illumination lens, and the outer wall surface of the illumination lens at least comprises three annular surfaces which are not in the same horizontal plane in the cavity. A cavity is formed in the outer wall face of the lighting lens, the outer wall face of the lighting lens is divided into a first ring face, a second ring face and a third ring face, a pair of communicating pipes is arranged on the outer wall face of the sleeve, one end of each communicating pipe is communicated with the cavity, and communication of the communicating pipes is achieved. And the diameter of the second ring surface is gradually reduced in the direction from the first ring surface to the third ring surface, so that when the illumination lens is cooled, the cooling area is larger, the cooling effect is improved, the cooling uniformity is ensured, and local overheating of the illumination lens is prevented.

Description

Technical Field

[0001] This utility model relates to the field of lighting lens technology, and in particular to a heat dissipation module for lighting lenses. Background Technology

[0002] In DMD (Digital Micromirror Device) imaging technology, with the continuous innovation of modern lighting technology, illumination lenses are increasingly used in various high-end imaging and projection devices. As a core component of the optical imaging system, the performance of the illumination lens directly determines the light efficiency, beam quality, and overall durability of the entire imaging system. However, with the continuous increase in illumination power and the sharp increase in light source density, the heat generated by the illumination lens during operation also rises sharply, posing an unprecedented challenge to the lens's heat dissipation mechanism.

[0003] Traditional heat dissipation solutions, such as natural cooling and heat sinks, are inadequate for the heat dissipation requirements of modern high-power illumination lenses. Natural cooling, due to its low efficiency, often leads to excessively high lens temperatures, which in turn damages optical performance and shortens lifespan. While heat sinks can expand the heat dissipation area to some extent, their cooling effect remains insufficient in high-power-density operating environments, and they are prone to dust accumulation, further weakening their cooling performance. In addition, while air cooling solutions offer stronger heat dissipation capabilities, they often require additional space to accommodate fans and other heat dissipation components; and while water cooling solutions offer excellent heat dissipation performance, they also require a larger contact area and occupy more space, which is undoubtedly a significant challenge for DMD imaging systems that strive for a compact design.

[0004] Therefore, this application develops a heat dissipation module for an illumination lens to solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of this invention is to provide a heat dissipation module for an illumination lens, so as to solve the problem that the existing technology requires more space for heat dissipation of the illumination lens.

[0006] The technical solution of this utility model is: a heat dissipation module for an illumination lens, including an illumination lens, an annular sleeve is provided on the outer wall surface of the illumination lens, the sleeve and the outer wall surface of the illumination lens form a cavity, and the outer wall surface of the illumination lens includes at least three annular surfaces that are not on the same horizontal plane within the cavity. A pair of connecting pipes are provided on the outer wall surface of the sleeve, and one end of each pair of connecting pipes is connected to the cavity to realize the connection between the pair of connecting pipes.

[0007] Preferably, the illumination lens includes a first annular surface, a second annular surface, and a third annular surface arranged sequentially along the axial direction of the illumination lens. The diameter of the first annular surface is larger than the diameter of the second annular surface, such that the diameter of the second annular surface gradually decreases along the direction from the first annular surface to the third annular surface.

[0008] Preferably, the connecting pipe includes a first connecting pipe and a second connecting pipe, the second connecting pipe being connected to the cavity and protruding into the cavity, such that the bottom surface of the second connecting pipe is not on the same horizontal plane as the inner wall surface of the sleeve.

[0009] Preferably, the first connecting pipe is a cylindrical pipe, the second connecting pipe is a polygonal pipe, and the cross-sectional area of ​​the first connecting pipe is larger than the cross-sectional area of ​​the second connecting pipe.

[0010] Preferably, annular grooves are provided at both ends of the sleeve, the annular grooves are connected to the outer wall surface of the illumination lens, and a washer is provided in the annular groove.

[0011] Preferably, the inner wall surface of the illumination lens includes a first surface and a second surface, the projection of the first surface onto the first annular surface and the second annular surface, the projection of the second surface onto the second annular surface and the third annular surface, and the shape of the second surface matches the shape of the second annular surface.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] (1) By providing a cavity on the outer wall of the illumination lens and dividing the outer wall of the illumination lens into a first annular surface, a second annular surface and a third annular surface, the diameter of the second annular surface gradually decreases along the direction from the first annular surface to the third annular surface, thereby providing a larger cooling area when cooling the illumination lens, improving the cooling effect, and ensuring the uniformity of cooling to prevent local overheating of the illumination lens. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a cross-sectional view of the heat dissipation module of the illumination lens described in this utility model;

[0016] Figure 2 for Figure 1 Enlarged structural diagram of A in the middle;

[0017] Figure 3 This is a schematic diagram of the heat dissipation module of an illumination lens according to the present invention;

[0018] Figure 4This is a schematic diagram of the outer wall surface of an illumination lens according to the present invention;

[0019] Figure 5 This is a cross-sectional view of the connecting pipe described in this utility model.

[0020] Wherein: 1. Illumination lens; 11. First annular surface; 12. Second annular surface; 13. Third annular surface; 14. First surface; 15. Second surface; 2. Sleeve; 21. Annular groove; 22. Washer; 3. Cavity; 4. Connecting pipe; 41. First connecting pipe; 42. Second connecting pipe. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to specific embodiments:

[0022] like Figures 1-4 As shown, a heat dissipation module for an illumination lens includes an illumination lens 1. An annular sleeve 2 is provided around the outer wall of the illumination lens 1. A cavity 3 is formed between the inner wall of the sleeve 2 and the outer wall of the illumination lens 1. The cavity 3 is connected to a pair of connecting pipes 4, which are an inlet pipe and an outlet pipe, respectively. Coolant enters through the inlet pipe, passes through the cavity 3, and is discharged from the outlet pipe to form a circulation. When the illumination lens 1 is working, it generates heat, which is conducted to the cavity 3 through the outer wall of the illumination lens 1. Since the cavity 3 is in direct contact with the coolant, the heat can be quickly absorbed and carried away by the coolant, thereby achieving efficient heat dissipation. At the same time, the cavity 3 also allows the coolant to be evenly distributed around the outer wall of the illumination lens 1, thereby ensuring that the heat of all parts of the illumination lens 1 can be effectively carried away, avoiding local overheating or uneven temperature of the illumination lens 1, and improving the overall performance and stability of the lens.

[0023] In this embodiment, the illumination lens 1 includes a first annular surface 11, a second annular surface 12, and a third annular surface 13, wherein the second annular surface 12 is located between the first annular surface 11 and the third annular surface 13, and the diameter of the first annular surface 11 is larger than the diameter of the third annular surface 13, such that the diameter of the second annular surface 12 gradually decreases along the direction from the first annular surface 11 to the third annular surface 13. Figure 1As shown, the cross-sectional view of the second annular surface 12 is an inclined plane. When the cooling water flows in the cavity 3 formed by the annular sleeve, the inclined plane can guide the water flow to be more evenly distributed on the lens surface, ensuring that heat can be carried away more quickly. This helps to reduce the accumulation of heat on the lens surface, improve heat dissipation efficiency, and also increases the surface area of ​​the lens outer wall, thereby providing a larger heat dissipation area, further improving heat dissipation efficiency, reducing the lens's operating temperature, and forming a tighter contact between the lens and the annular sleeve due to the presence of the inclined plane. This reduces the generation of air gaps, which can reduce thermal resistance, improve heat conduction efficiency, and transfer the heat generated by the lens to the cooling water more quickly, achieving more effective heat dissipation. Since the inclined plane can guide the cooling water to flow more evenly on the lens surface, it can ensure that the heat distribution on the lens surface is more uniform, avoid the occurrence of local overheating, and improve the stability and service life of the lens.

[0024] Furthermore, such as Figure 5 As shown, the connecting pipe 4 includes a first connecting pipe 41 and a second connecting pipe 42, which are respectively the inlet pipe and the outlet pipe. Both the inlet pipe and the outlet pipe protrude into the cavity 3, which can reduce the flow resistance of the cooling water in the cavity, allowing the cooling water to enter and leave the cavity 3 more smoothly, thereby improving the heat dissipation efficiency. It can also guide the distribution of cooling water in the cavity 3. By reasonably designing the shape and position of the protrusions, it can be ensured that the cooling water can evenly cover the outer wall of the illumination lens 1, thereby further improving the heat dissipation effect. Preferably, the first connecting pipe 41 is a cylindrical pipe and the second connecting pipe 42 is a polygonal pipe, and the area of ​​the first connecting pipe 41 is larger than the area of ​​the second connecting pipe 42. The cylindrical pipe, due to its smooth inner wall and uniform cross-section, can reduce the turbulence and resistance of the fluid during the flow process, thereby ensuring the stability of the fluid flow. The first connecting pipe 41 has a larger area, which can hold more coolant, thereby buffering and distributing the flow before the coolant enters the second connecting pipe 42, making the pressure of the coolant entering the cavity 3 more stable, and avoiding excessive impact or pressure on the lens.

[0025] To improve the sealing during the cooling process and prevent coolant leakage, such as Figures 1-2 As shown, the sleeve 2 has annular grooves 21 at both ends, and a washer 22 is provided in the annular groove 21. The washer 22 is tightly sealed to the outer wall surface of the illumination lens 1 and the inner wall surface of the annular groove 21, forming an effective sealing barrier. This can prevent the coolant from leaking out from both ends of the sleeve 2 during the cooling process, ensuring the sealing and stability of the coolant. The washer 22 not only plays a sealing role, but also can disperse the pressure on both ends of the sleeve 2 to a certain extent, which helps to reduce the deformation or damage of the sleeve 2 caused by long-term high pressure, thereby extending its service life.

[0026] Furthermore, the inner wall surface of the illumination lens 1 includes a first surface 14 and a second surface 15. The projection of the first surface 14 onto the illumination lens falls on the first annular surface 11 and the second annular surface 12. The projection of the second surface 15 onto the illumination lens falls on the second annular surface 12 and the third annular surface 13. The shape of the second surface 15 matches the shape of the second annular surface 12, which can obtain a larger heat dissipation area, help to accelerate the heat transfer speed, and enable the heat inside the lens to be dissipated to the surrounding environment more quickly. At the same time, the coolant will not generate unnecessary obstruction during the flow process, affecting or changing the flow of the coolant.

[0027] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A heat dissipation module for an illumination lens, comprising an illumination lens (1), characterized in that: The outer wall of the illumination lens (1) is provided with an annular sleeve (2), and the sleeve (2) and the outer wall of the illumination lens (1) form a cavity (3). In the cavity (3), the outer wall of the illumination lens (1) includes at least three annular surfaces that are not on the same horizontal plane. The outer wall of the sleeve (2) is provided with a pair of connecting pipes (4), and one end of each pair of connecting pipes (4) is connected to the cavity (3) to realize the connection of the pair of connecting pipes (4).

2. The heat dissipation module for an illumination lens according to claim 1, characterized in that: The illumination lens (1) includes a first annular surface (11), a second annular surface (12) and a third annular surface (13) arranged sequentially along the axial direction of the illumination lens (1). The diameter of the first annular surface (11) is larger than the diameter of the second annular surface (12), so that the diameter of the second annular surface (12) gradually decreases along the direction from the first annular surface (11) to the third annular surface (13).

3. The heat dissipation module for an illumination lens according to claim 1, characterized in that: The connecting pipe (4) includes a first connecting pipe (41) and a second connecting pipe (42). The second connecting pipe (42) communicates with the cavity (3) and protrudes into the cavity (3), so that the bottom surface of the second connecting pipe (42) is not on the same horizontal plane as the inner wall surface of the sleeve (2).

4. The heat dissipation module for an illumination lens according to claim 3, characterized in that: The first connecting pipe (41) is a cylindrical pipe, the second connecting pipe (42) is a polygonal pipe, and the cross-sectional area of ​​the first connecting pipe (41) is greater than the cross-sectional area of ​​the second connecting pipe (42).

5. The heat dissipation module for an illumination lens according to claim 1, characterized in that: The sleeve (2) has annular grooves (21) at both ends, which are connected to the outer wall of the illumination lens (1), and a washer (22) is provided in the annular groove (21).

6. The heat dissipation module for an illumination lens according to claim 2, characterized in that: The inner wall surface of the illumination lens (1) includes a first surface (14) and a second surface (15). The projection of the first surface (14) onto the illumination lens (1) falls on the first annular surface (11) and the second annular surface (12). The projection of the second surface (15) onto the illumination lens (1) falls on the second annular surface (12) and the third annular surface (13). The shape of the second surface (15) matches the shape of the second annular surface (12).

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