A high-concentration headlight reflector

Abstract

This utility model relates to the field of automotive parts technology, specifically to a high-concentration headlight reflector cup, including a reflector cup body and a heat sink cover. The heat sink cover is fixed to the rear side of the reflector cup body. The back of the reflector cup body is integrally die-cast with multiple sets of heat dissipation fins that match the geometry of the reflective surface. The heat dissipation fins are distributed in a gradient along the light reflection direction, and the height of the heat dissipation fins is positively correlated with the depth of the reflector cup body's surface. The height of the heat dissipation fins at the greater depth of the reflector cup body's surface is higher than that at the edge. An air intake box is fixedly connected to the lower end of the heat sink cover, and an exhaust box is fixedly connected to the upper end of the heat sink cover. By integrally molding the heat dissipation fins with the reflector cup body, thermal resistance is effectively reduced and heat conduction efficiency is improved. At the same time, the air intake box and the exhaust box work together to allow the inner area of ​​the heat sink cover to be connected to the external air, enabling air convection inside the heat sink cover to quickly remove the heat from the surface of the heat dissipation fins without affecting the internal sealing of the headlight body, thus effectively improving the heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a high-concentration headlight reflector. Background Technology

[0002] The reflector cup of a car headlight is a core component of the automotive lighting system. Its function is to focus the light emitted by the light source through a reflective surface to form a lighting pattern that meets regulatory requirements. However, traditional reflectors accumulate a lot of heat during the light focusing process. Especially after the widespread use of high-power LED chips, the heat dissipation problem is particularly prominent. If the heat cannot be dissipated in time, it will cause the reflector cup to deform, the coating to age, and the light efficiency to decrease, thereby affecting the light focusing effect of the reflector cup and even shortening the life of the headlight.

[0003] Among them, announcement number CN219140597U discloses a heat dissipation structure for a reflector bowl in a vehicle headlight, including: a lamp housing; a reflector bowl body, which has a bowl-shaped structure; and a heat dissipation base connected to the reflector bowl body. Both the heat dissipation base and the reflector bowl body are located within the lamp housing. The heat dissipation base is connected to the lamp housing, and it has several heat dissipation holes. Several heat dissipation ribs are formed at the lower end of the heat dissipation base. Compared with the prior art, the advantage of this utility model is that a heat dissipation base is installed at the rear end of the reflector bowl body. During the process of light focusing, the heat generated by the reflector bowl is partially discharged into the cavity through the several heat dissipation holes, and partially absorbed by the heat dissipation base for heat dissipation, thereby improving the service life of the vehicle headlight.

[0004] However, in actual use, the heat sink and reflector are combined separately for heat dissipation. There is thermal resistance at the connection interface, which affects the heat conduction efficiency. At the same time, both the heat sink and the reflector are located inside the housing, while the housing of the headlight is usually a sealed structure with poor air circulation, which cannot effectively dissipate heat, resulting in poor heat dissipation.

[0005] Therefore, it is necessary to invent a high-concentration vehicle headlight reflector to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a high-concentration vehicle headlight reflector to solve the problem of poor heat dissipation in existing high-concentration reflectors.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-concentration vehicle headlight reflector, comprising a reflector body and a heat sink, wherein the heat sink is fixed to the rear side of the reflector body, and the back of the reflector body is integrally die-cast with multiple sets of heat dissipation fins matching the geometric shape of the reflective surface, the heat dissipation fins being gradient-distributed along the light reflection direction, the height of the heat dissipation fins being positively correlated with the depth of the reflector body surface, the height of the heat dissipation fins at the greater depth of the reflector body surface being higher than that at the edge, an air intake box being fixedly connected to the lower end of the heat sink, and an exhaust box being fixedly connected to the upper end of the heat sink.

[0008] By adopting the above technical solution, the heat dissipation fins and the reflector body are integrally formed, which effectively reduces thermal resistance and improves thermal conductivity. The air inlet box and the exhaust box both extend through the lamp holder to the outside. Through the cooperation of the air inlet box and the exhaust box on the back, the inside of the heat dissipation cover is connected with the outside air, so that the inside of the heat dissipation cover can achieve air convection, so as to quickly remove the heat from the surface of the heat dissipation fins without affecting the sealing of the lamp body.

[0009] Optionally, an air intake pipe is fixedly connected to the rear end of the air intake box.

[0010] By adopting the above technical solution, the end of the air intake pipe away from the radiator extends to the vehicle's air intake grille, which can accelerate the air circulation inside the radiator during vehicle operation.

[0011] Optionally, an exhaust pipe is fixedly connected to the rear end of the exhaust box.

[0012] By adopting the above technical solution, the exhaust pipe is used to expel the air inside the heat sink.

[0013] Optionally, the internal reflective surface of the reflector cup is a multi-segment quadratic Bézier curve fitted surface.

[0014] By adopting the above technical solution, the multi-segment quadratic Bézier curve fitting surface makes the connection smooth and the radius of curvature gradually decreases from the cup mouth to the cup bottom, making the optical fiber focus more uniform, improving the brightness of the light plate, and avoiding the generation of local hot spots.

[0015] Optionally, a connecting plate is fixedly connected to the edge of the reflector body, and multiple sets of connecting feet are fixedly connected to the side of the connecting plate, with connecting grooves formed on the surface of the connecting feet.

[0016] By adopting the above technical solution, the connecting plate is used to be clipped onto the front edge of the heat sink to support the reflector body.

[0017] Optionally, the inner wall of the heat sink is fixedly connected to multiple sets of connecting posts, and the connecting posts are provided with threaded holes.

[0018] By adopting the above technical solution, the heat sink and the reflector body are tightly connected by using screws to connect the connecting groove and the threaded hole.

[0019] Optionally, a sealing strip is fixedly connected to the back edge of the connecting plate.

[0020] Optionally, a sealing groove is provided at the edge of the front surface of the heat sink.

[0021] By adopting the above technical solution, the sealing strip is stuck inside the sealing groove, improving the sealing performance between the heat sink and the reflector body.

[0022] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model integrates the heat dissipation fins with the reflector body, effectively reducing thermal resistance and improving heat conduction efficiency. At the same time, the air inlet and outlet boxes work together to allow the inner area of ​​the heat dissipation cover to be connected with the external air, enabling air convection inside the heat dissipation cover to quickly remove the heat from the surface of the heat dissipation fins without affecting the sealing of the lamp body, thus effectively improving the heat dissipation effect and thereby effectively improving the light focusing effect. 2. This utility model has a sealing strip fixedly connected to the back edge of the connecting plate and a sealing groove opened on the front surface edge of the heat sink. During installation, the sealing strip is stuck inside the sealing groove, which further improves the sealing performance between the heat sink and the reflector body. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the front structure of the reflector body of this utility model; Figure 3 This is a schematic diagram of the back structure of the reflector cup body of this utility model; Figure 4 This is a schematic diagram of the front structure of the heat sink of this utility model; Figure 5 This is a schematic diagram of the back structure of the heat sink of this utility model.

[0024] Explanation of reference numerals in the attached figures: 1. Reflector body; 11. Connecting plate; 12. Connecting foot; 13. Connecting groove; 14. Sealing strip; 15. Heat dissipation fins; 2. Heat dissipation cover; 21. Connecting post; 22. Threaded hole; 23. Sealing groove; 24. Air inlet box; 25. Air inlet pipe; 26. Exhaust box; 27. Exhaust pipe. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figures 1 to 5 The high-concentration headlight reflector shown includes a reflector body 1 and a heat sink 2. The heat sink 2 is fixed to the rear side of the reflector body 1. The back of the reflector body 1 has multiple sets of heat sink fins 15 integrally die-cast, which match the geometry of the reflective surface. The heat sink fins 15 are distributed in a gradient along the direction of light reflection. The height of the heat sink fins 15 is positively correlated with the depth of the surface of the reflector body 1. The height of the heat sink fins 15 at the point where the surface depth of the reflector body 1 is greater is higher than that at the edge. An air intake box 24 is fixedly connected to the lower end of the heat sink 2, and an exhaust box 26 is fixedly connected to the upper end of the heat sink 2.

[0027] The reflector cup body 1 and the heat sink 2 are both installed inside the headlight housing. The air intake box 24 and the exhaust box 26 extend through the headlight housing to the outside. The connection between the air intake box 24, the exhaust box 26 and the headlight housing is sealed with rubber strips to ensure the airtightness of the headlight and reduce external dust pollution.

[0028] Meanwhile, the reflector body 1 and the heat dissipation fins 15 are integrally die-cast from aluminum alloy. The inner surface of the reflector body 1 is covered with a high-reflectivity nano-aluminum coating to improve reflectivity. The heat dissipation fins 15 match the depth difference of the reflector body 1 to increase the heat dissipation area.

[0029] As a preferred embodiment, an intake pipe 25 is fixedly connected to the rear end of the intake box 24, and an exhaust pipe 27 is fixedly connected to the rear end of the exhaust box 26.

[0030] In addition, during vehicle operation, after external air enters the air intake grille, it is guided to the interior of the air intake box 24 through the air intake pipe 25. The air intake box 24 then guides the air into the heat sink 2, and then it is discharged from the exhaust box 26 and the exhaust pipe 27. This increases the airflow speed inside the heat sink 2, thereby quickly removing the heat from the surface of the heat sink fins 15 and rapidly cooling the reflector cup body 1, thus improving the cooling effect on the reflector cup body 1.

[0031] As a preferred embodiment, the inner reflective surface of the reflector body 1 is a multi-segment quadratic Bézier curve fitted surface.

[0032] In addition, the inner reflective surface of the reflector body 1 is fitted by multiple quadratic Bézier curves with smooth transitions at the joints. The radius of curvature decreases from the mouth of the cup to the bottom of the cup. This design makes the light focus more uniform, improves the brightness of the light spot, and avoids the generation of local hot spots.

[0033] See Figure 2 and Figure 4A connecting plate 11 is fixedly connected to the edge of the reflector body 1. Multiple sets of connecting feet 12 are fixedly connected to the side of the connecting plate 11. Connecting grooves 13 are opened on the surface of the connecting feet 12. Multiple sets of connecting posts 21 are fixedly connected to the inner wall of the heat sink 2. Threaded holes 22 are opened inside the connecting posts 21.

[0034] During the process of connecting the reflector body 1 and the heat sink 2, the connecting plate 11 is attached to the front edge of the heat sink 2, the back of the reflector body 1 is inserted into the interior of the heat sink 2, and then the screw is threaded through the connecting groove 13 and the threaded hole 22 to connect and fix the reflector body 1 and the heat sink 2.

[0035] As a preferred embodiment, a sealing strip 14 is fixedly connected to the back edge of the connecting plate 11, and a sealing groove 23 is provided at the front surface edge of the heat sink 2.

[0036] Meanwhile, after the reflector body 1 is fixed to the heat sink 2, the sealing strip 14 will be inserted into the sealing groove 23, thereby improving the sealing between the heat sink 2 and the reflector body 1.

[0037] The working principle of this utility model is as follows: the heat dissipation fins 15 are integrally formed with the reflector cup body 1, which effectively reduces thermal resistance and improves heat conduction efficiency. At the same time, the air inlet box 24 and the exhaust box 26 work together to make the inner area of ​​the heat dissipation cover 2 connected with the external air, so that the inner side of the heat dissipation cover 2 can achieve air convection, so as to quickly remove the heat from the surface of the heat dissipation fins 15 without affecting the sealing of the lamp body, thus effectively improving the heat dissipation effect.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A high-concentration vehicle headlight reflector, comprising a reflector body (1) and a heat sink (2), characterized in that: The heat sink (2) is fixed to the rear side of the reflector body (1). The back of the reflector body (1) has multiple sets of heat sink fins (15) that match the geometric shape of the reflective surface. The heat sink fins (15) are distributed in a gradient along the direction of light reflection. The height of the heat sink fins (15) is positively correlated with the depth of the reflector body (1). The height of the heat sink fins (15) at the larger depth of the reflector body (1) is higher than that at the edge. The lower end of the heat sink (2) is fixedly connected to an air inlet box (24), and the upper end of the heat sink (2) is fixedly connected to an exhaust box (26).

2. The high-concentration vehicle lamp reflector according to claim 1, characterized in that: An air intake pipe (25) is fixedly connected to the rear end of the air intake box (24).

3. The high-concentration vehicle lamp reflector according to claim 1, characterized in that: An exhaust pipe (27) is fixedly connected to the rear end of the exhaust box (26).

4. The high-concentration vehicle lamp reflector according to claim 1, characterized in that: The inner reflective surface of the reflector body (1) is a multi-segment quadratic Bézier curve fitted surface.

5. A high-concentration vehicle lamp reflector according to claim 1, characterized in that: A connecting plate (11) is fixedly connected to the edge of the reflector body (1), and multiple sets of connecting feet (12) are fixedly connected to the side of the connecting plate (11). A connecting groove (13) is provided on the surface of the connecting feet (12).

6. A high-concentration vehicle lamp reflector according to claim 1, characterized in that: The inner wall of the heat sink (2) is fixedly connected to multiple sets of connecting columns (21), and the connecting columns (21) are provided with threaded holes (22).

7. A high-concentration vehicle lamp reflector according to claim 5, characterized in that: A sealing strip (14) is fixedly connected to the back edge of the connecting plate (11).

8. A high-concentration vehicle lamp reflector according to claim 1, characterized in that: A sealing groove (23) is provided at the edge of the front surface of the heat sink (2).

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