Automobile headlamp with defogging structure

Abstract

This utility model relates to the field of automotive lighting technology and discloses an automotive lamp with a defogging structure. It includes a lamp panel and a lamp cover mounted on the lamp panel. Module lamps are mounted on both sides of the lamp panel, and a central frame is fixed between the opposing surfaces of the two module lamps. The defogging structure includes a reciprocating rotating assembly mounted on the top of the central frame, with its rotating end rotatably connected to the lamp panel. A heating wire is fixed to the rotating end of the reciprocating rotating assembly. This automotive lamp with a defogging structure drives the heating wire to rotate reciprocally through the reciprocating rotating assembly, dynamically and cyclically covering the entire internal cavity surface of the lamp with the generated heat. This significantly reduces the temperature gradient on the lamp body surface, qualitatively improving the defogging speed and uniformity. Simultaneously, because the heat is directly and evenly transferred to the entire lamp cavity, comprehensive defogging can be achieved with shorter heating time and lower energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, and in particular to an automotive lighting system with a defogging structure. Background Technology

[0002] In environments with large temperature fluctuations or high humidity (such as rainy days or winter), the internal cavities of car headlights are prone to condensation of fog or water droplets, forming mist. This fogging phenomenon significantly reduces the brightness and light transmittance of the headlights, distorts the light beam, seriously interferes with the driver's vision, and poses a major threat to nighttime driving safety.

[0003] Heating to defog by installing heating wires is currently the most common method. In order to minimize the obstruction of the main light path of the headlight, the heating wires are usually placed on the outer edge of the headlight lens or lens. However, in actual application, this leads to a serious problem of uneven heat distribution, resulting in a significant temperature gradient on the headlight surface where the "edge is hot and the center is cold".

[0004] It takes a long time for the central area to reach the defogging temperature, and the defogging speed is slow. This cannot meet the immediate requirement of rapid defogging for driving safety. In addition, there may be a phenomenon where the fog at the edges has dissipated while the central area is still foggy, resulting in uneven defogging and affecting the overall lighting quality. Utility Model Content

[0005] In view of the above-mentioned problems of slow defogging speed and uneven defogging in existing products, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide an automotive headlight with a defogging structure, which aims to achieve rapid, uniform, and efficient heating and defogging.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a car headlight with a defogging structure, including a headlight plate and a headlight cover mounted on the headlight plate. Module lights are mounted on both sides of the headlight plate. A central frame is fixed between the opposing surfaces of the two module lights. A set of first LED beads is mounted on one end of the central frame near the headlight plate. A defogging light is provided on the headlight plate below the module lights. A brake light is provided on the headlight plate on the side of the headlight plate away from the first LED beads.

[0008] The defogging structure includes a reciprocating rotating assembly installed on the top of the central frame, and the rotating end of the reciprocating rotating assembly is rotatably connected to the lamp panel. A heating wire is fixed to the rotating end of the reciprocating rotating assembly.

[0009] As an improved technical solution, a protruding edge is fixed on the outer edge of the front end face of the lamp panel, and a sealing groove is provided on the end face of the protruding edge away from the lamp panel, and a sealing strip is installed inside the sealing groove.

[0010] As an improved technical solution, the lamp plate has a first lamp cavity, and a third lamp cavity for fixing the fog light is provided on the lamp plate below the first lamp cavity. The lamp plate has a second lamp cavity for fixing the brake light on the side near the brake light.

[0011] As an improved technical solution, the module lamp includes a lamp housing, and multiple lamp holders are fixed inside the lamp housing, with a second LED bead installed in the center of each lamp holder.

[0012] As an improved technical solution, the reciprocating rotating assembly includes a horizontal platform and a hollow rotating column rotatably mounted on the lamp plate, with a driving body for driving the hollow rotating column to rotate mounted on the top of the horizontal platform.

[0013] As an improved technical solution, the driving body includes a transmission block that is laterally movably arranged on a cross platform, a rack fixed to the top of the transmission block, and a gear meshing with the rack is fitted onto one end of the hollow rotating column near the rack.

[0014] As an improved technical solution, the drive body also includes a servo motor installed at one end of the cross platform. The output shaft of the servo motor is equipped with a lead screw through a coupling, and the transmission block is provided with a threaded hole for threaded connection with the lead screw. The top of the cross platform is equipped with a guide rail that is slidably connected to the transmission block.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are:

[0016] 1. This utility model integrates two module lights, a set of first LED beads, a fog light and a brake light on the vehicle light to meet different lighting requirements. The integrated design makes it easier to quickly assemble the vehicle light and improves manufacturing efficiency.

[0017] 2. This utility model drives the heating wire to rotate reciprocally through a reciprocating rotating component, so that the heat generated by it dynamically and cyclically covers the entire internal cavity surface of the vehicle lamp, which greatly reduces the temperature gradient on the lamp body surface and significantly improves the defogging speed and uniformity. At the same time, since the heat is directly and evenly transferred to the entire lamp cavity, the goal of comprehensive defogging can be achieved with shorter heating time and lower energy consumption. Furthermore, when defogging is not required, the heating wire is driven to be in a horizontal position to avoid the heating wire obstructing the light. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0019] Figure 1 This is a three-dimensional structural diagram of a car headlight with a defogging structure according to the present invention.

[0020] Figure 2 This is a schematic diagram of the module lamp of an automotive headlight with a defogging structure according to the present invention.

[0021] Figure 3 This is a schematic diagram of the defogging structure of an automotive headlight with a defogging mechanism according to the present invention.

[0022] Figure 4 This is a schematic diagram of the reciprocating rotating assembly of an automotive headlight with a defogging structure according to the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Lamp panel; 2. Module lamp; 21. Lamp compartment; 22. Lamp holder; 23. Second LED bead; 3. Central frame; 4. First LED bead; 5. Defogging structure; 6. Reciprocating rotating assembly; 61. Horizontal platform; 62. Guide rail; 63. Transmission block; 64. Servo motor; 65. Lead screw; 66. Rack; 67. Gear; 68. Hollow rotating column; 7. Heating wire; 8. Defogging lamp; 9. Brake lamp; 10. First lamp cavity; 11. Second lamp cavity; 12. Third lamp cavity; 13. Raised edge; 14. Sealing groove. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Example 1

[0027] Reference Figures 1-4 This is the first embodiment of the present utility model, which provides a car headlight with a defogging structure. This car headlight with a defogging structure includes a lamp plate 1 and a lamp cover mounted on the lamp plate 1. Module lamps 2 are mounted on both sides of the lamp plate 1. A central frame 3 is fixed between the opposite faces of the two module lamps 2. A set of first LED beads 4 is mounted on one end face of the central frame 3 near the lamp plate 1. A defogging lamp 8 is provided on the lamp plate 1 and below the module lamps 2. A brake lamp 9 is provided on the lamp plate 1 and on the side of the module lamps 2 away from the first LED beads 4.

[0028] The defogging structure 5 includes a reciprocating rotating assembly 6 installed on the top of the central frame 3, and the rotating end of the reciprocating rotating assembly 6 is rotatably connected to the lamp panel 1. The rotating end of the reciprocating rotating assembly 6 is fixed with a heating wire 7. The defogging structure 5 also includes a temperature sensor installed on the vehicle lamp.

[0029] The reciprocating rotating component 6 drives the heating wire 7 to reciprocate. The rotation of the heating wire 7, which is located in the middle, expands the heating range of the heating wire 7 at the headlight. The heat generated by the heating wire 7 is dynamically and cyclically covered to the entire internal cavity surface of the headlight, which greatly reduces the temperature gradient on the surface of the headlight body. This achieves synchronous, rapid and uniform heating across the entire area, effectively avoiding local overheating and heating dead zones. The speed and uniformity of defogging are significantly improved. At the same time, since the heat is directly and evenly transferred to the entire headlight cavity, the accumulation of ineffective heat in the edge area is avoided. The goal of comprehensive defogging can be achieved with shorter heating time and lower energy consumption. Furthermore, when defogging is not required, the heating wire 7 is driven to be in a horizontal position to avoid the heating wire 7 obstructing the headlight.

[0030] A protruding edge 13 is fixed on the outer edge of the front end face of the lamp panel 1. A sealing groove 14 is provided on the end face of the protruding edge 13 away from the lamp panel 1, and a sealing strip is installed inside the sealing groove 14. The sealing strip inside the sealing groove 14 is used to improve the sealing performance of the vehicle lamp, which helps to prevent water vapor from entering the lamp cavity and facilitates the formation of fog.

[0031] The light panel 1 has a first light cavity 10, and two modular lights 2 and the central frame 3 are fixed inside the first light cavity 10. The light panel 1 and the third light cavity 12 for fixing the fog light 8 are provided below the first light cavity 10. The light panel 1 has a second light cavity 11 for fixing the brake light 9 on the side near the brake light 9. The headlight integrates two modular lights 2, a set of first LED beads 4, a fog light 8 and a brake light 9 to meet different lighting requirements. The integrated design is more conducive to the rapid assembly of the headlight and improves the production efficiency.

[0032] The module lamp 2 includes a lamp housing 21, and multiple lamp holders 22 are fixed inside the lamp housing 21. A second LED bead 23 is installed in the middle of each lamp holder 22.

[0033] The reciprocating rotating assembly 6 includes a horizontal platform 61 and a hollow rotating column 68 rotatably mounted on the lamp plate 1. The heating wire 7 passes through and is fixed inside the hollow rotating column 68. The lamp plate 1 and the hollow rotating column 68 are sealed by a mechanical rotation seal. A drive body for driving the hollow rotating column 68 to rotate is installed on the top of the horizontal platform 61.

[0034] The drive unit includes a transmission block 63 that is laterally movable on a cross platform 61. A rack 66 is fixed to the top of the transmission block 63. A gear 67 that meshes with the rack 66 is fitted onto one end of a hollow rotating column 68 near the rack 66.

[0035] The drive unit also includes a servo motor 64 installed at one end of the cross platform 61. The output shaft of the servo motor 64 is equipped with a lead screw 65 via a coupling. The transmission block 63 has a threaded hole that is threadedly connected to the lead screw 65. Both ends of the lead screw 65 are rotatably mounted on the cross platform 61 via bearings. The top of the cross platform 61 is equipped with a guide rail 62 that is slidably connected to the transmission block 63. The bottom of the transmission block 63 has a groove for the guide rail 62 to pass through.

[0036] The process for driving the heating wire 7 to rotate is as follows:

[0037] The servo motor 64 drives the lead screw 65 to rotate. Under the threaded transmission action of the lead screw 65 and the threaded hole on the transmission block 63, the transmission block 63 drives the rack 66 to slide. Under the meshing transmission action of the rack 66 and the gear 67, the hollow rotating column 68 drives the heating wire 7 to rotate. Therefore, by controlling the lead screw 65 to rotate in the forward and reverse directions through the servo motor 64, and under the meshing transmission action of the rack 66 and the gear 67, the heating wire 7 will be driven to rotate reciprocally, thus expanding the heating range of the heating wire 7 in the lamp cavity.

[0038] The working principle of this utility model is as follows: The heating wire 7 is turned on to heat the headlight, so as to balance the temperature difference between the inside and outside and to defog the headlight. The reciprocating rotating component 6 drives the heating wire 7 to rotate reciprocally. The rotation of the heating wire 7 located in the middle expands the heating range of the heating wire 7 at the headlight, and the heat generated by it dynamically and cyclically covers the entire internal cavity surface of the headlight, thereby achieving synchronous, rapid and uniform heating throughout the entire area.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A vehicle headlamp with a defogging structure, comprising a lamp panel (1) and a lamp cover installed on the lamp panel (1), characterized in that: Module lights (2) are installed on both sides of the light panel (1). A central frame (3) is fixed between the opposite sides of the two module lights (2). A set of first LED beads (4) is installed on one end of the central frame (3) near the light panel (1). A fog light (8) is provided on the light panel (1) and below the module lights (2). A brake light (9) is provided on the light panel (1) and on the side of the module lights (2) away from the first LED beads (4). The defogging structure (5) includes a reciprocating rotating assembly (6) installed on the top of the central frame (3), and the rotating end of the reciprocating rotating assembly (6) is rotatably connected to the lamp plate (1). The rotating end of the reciprocating rotating assembly (6) is fixed with a heating wire (7).

2. The vehicle lamp with defogging structure according to claim 1, characterized in that: A protruding edge (13) is fixed on the outer edge of the front face of the lamp plate (1). A sealing groove (14) is provided on the end face of the protruding edge (13) away from the lamp plate (1), and a sealing strip is installed inside the sealing groove (14).

3. The vehicle lamp with defogging structure according to claim 2, characterized in that: The lamp plate (1) has a first lamp cavity (10), and the lamp plate (1) and below the first lamp cavity (10) have a third lamp cavity (12) for fixing the fog light (8). The lamp plate (1) has a second lamp cavity (11) for fixing the brake light (9) on the side near the brake light (9).

4. The vehicle lamp with defogging structure according to claim 3, characterized in that: The module lamp (2) includes a lamp compartment (21), and multiple lamp holders (22) are fixed inside the lamp compartment (21). A second LED lamp bead (23) is installed in the middle of each lamp holder (22).

5. The vehicle lamp having a defogging structure according to claim 4, characterized by: The reciprocating rotating assembly (6) includes a cross platform (61) and a hollow rotating column (68) rotatably mounted on the lamp plate (1). The top of the cross platform (61) is equipped with a drive body for driving the hollow rotating column (68) to rotate.

6. The vehicle lamp having a defogging structure according to claim 5, characterized by: The driving body includes a transmission block (63) that is laterally movable on a cross platform (61). A rack (66) is fixed to the top of the transmission block (63). A gear (67) that meshes with the rack (66) is fitted on one end of the hollow rotating column (68) near the rack (66).

7. The vehicle lamp with defogging structure according to claim 6, characterized in that: The drive body also includes a servo motor (64) installed at one end of the cross platform (61). The output shaft of the servo motor (64) is equipped with a lead screw (65) through a coupling, and the transmission block (63) is provided with a threaded hole that is threadedly connected to the lead screw (65). The top of the cross platform (61) is equipped with a guide rail (62) that is slidably connected to the transmission block (63).

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