A vehicle low beam structure

Abstract

The utility model provides a kind of automobile low beam structure belongs to automobile headlamp technical field, including base, fixed groove is set in the middle part of base upper surface, LED circuit board is fixedly connected in the fixed groove, boss is provided on the bottom surface of base, the boss is located just below fixed groove, multiple cooling fins are provided in the rear end of boss bottom surface side by side, the outer edge of boss is connected with multiple cooling fins. The utility model can improve the heat dissipation efficiency of LED light source, improve the service life of automobile low beam.

Description

Technical Field

[0001] This utility model belongs to the field of automotive lighting technology, and in particular relates to a structure for automotive low beam headlights. Background Technology

[0002] LED light sources are characterized by high reliability, fast response speed, high luminous efficiency, low power consumption, and long service life. With the popularization of LED light sources, they are gradually being used in automotive headlights, such as low beam headlights.

[0003] However, current automotive low beam headlights typically have a heat sink inside the headlight to dissipate heat from the LED circuit board. However, the contact area between the LED light source and the heat sink is small, resulting in slow heat conduction and low heat dissipation efficiency, which affects the lifespan of the LED chips. Furthermore, the wires inside the headlight are easily damaged by high temperatures, leading to circuit failures and posing safety risks. Utility Model Content

[0004] In view of the defects or deficiencies in the existing technology, this utility model provides a structure for automotive low beam lamps that can improve the heat dissipation efficiency of LED light sources and extend the service life of automotive low beam lamps.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An embodiment of this utility model provides a structure for a car low beam headlight, including a base. A fixing groove is formed in the middle of the upper surface of the base, and an LED circuit board is fixedly connected in the fixing groove. A boss is provided on the bottom surface of the base, and the boss is located directly below the fixing groove. Multiple heat sinks are arranged side by side at the rear end of the bottom surface of the boss, and the outer edge of the boss is connected to the multiple heat sinks.

[0006] Furthermore, multiple heat sinks are arranged side by side at the rear end of the upper surface of the base, and the multiple heat sinks on the upper surface of the base are correspondingly arranged with the multiple heat sinks on the lower surface of the base.

[0007] Furthermore, a low-beam reflector is fixedly connected to the upper surface of the base, and the low-beam reflector covers the LED circuit board.

[0008] Furthermore, a light-shielding plate is fixedly connected to the front end of the base, and an installation groove is provided on the upper surface of the front end of the base. One end of the light-shielding plate is adapted to the installation groove, and the end of the light-shielding plate can be inserted into the installation groove and fixed.

[0009] Furthermore, the light-shielding plate is located at the focal point of the near-light reflector.

[0010] Furthermore, the end of the light-shielding plate furthest from the base is arc-shaped.

[0011] Furthermore, a mounting bracket is fixed to the front end of the base, and one side of the mounting bracket is in contact with the end face of the base.

[0012] Furthermore, a housing is fixedly connected to the side of the mounting bracket away from the base, and a lens is snapped and fixed to the end of the housing away from the mounting bracket.

[0013] Furthermore, a plurality of positioning posts are provided on the end face of the housing near the mounting bracket, and positioning holes are provided on the mounting bracket at positions corresponding to the positioning posts.

[0014] Furthermore, a heat insulation plate is also provided inside the shell, which is adapted to the inner wall of the shell and covers the lower inner wall of the shell.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention features a fixing groove on the upper surface of the base, which allows the LED circuit board to be placed inside, increasing the contact area between the LED circuit board and the base. Simultaneously, a boss is provided on the lower surface of the base, with its outer edge connected to multiple heat sinks. During use, the boss located directly below the fixing groove can quickly absorb heat from the LED circuit board and diffuse it to the heat sinks, thereby optimizing the heat dissipation path and improving the heat dissipation effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the low beam headlight structure in an embodiment of this utility model; Figure 2 This is an exploded view of the low beam headlight structure in an embodiment of this utility model; The components include: 1. Base; 101. Fixing groove; 102. Boss; 103. Heat sink; 104. Mounting groove; 2. LED circuit board; 3. Low beam reflector; 4. Light shield; 5. Mounting bracket; 501. Mounting hole; 6. Housing; 601. Snap-fit ​​structure; 602. Limiting plate; 603. Positioning post; 7. Lens; 8. Heat insulation plate. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] A typical embodiment of this utility model is as follows: Figure 1 and Figure 2 As shown, a low beam headlight structure for automobiles includes a base 1. A fixing groove 101 is provided in the middle of the upper surface of the base 1. An LED circuit board 2 is fixedly connected in the fixing groove 101. An LED light source is provided on the LED circuit board 2. The LED light source can emit a vertically upward beam of light. A boss 102 is provided in the middle of the lower surface of the base 1. The boss 102 is located directly below the fixing groove 101. Multiple heat sinks 103 are arranged side by side on the upper and lower surfaces of the rear end of the base 1. The multiple heat sinks 103 are arranged perpendicular to the upper and lower surfaces of the base 1. The multiple heat sinks 103 on the upper surface of the base 1 and the multiple heat sinks 103 on the lower surface of the base 1 are arranged correspondingly. By setting multiple heat sinks 103, the heat dissipation area of ​​the base 1 can be increased, ensuring its heat dissipation effect.

[0019] The outer edge of the boss 102 is connected to multiple heat sinks 103. By setting the fixing groove 101, the LED circuit board 2 can be placed in the fixing groove 101, which increases the contact surface between the LED circuit board 2 and the base 1. In use, the boss 102 set directly below the fixing groove 101 can quickly absorb the heat of the LED circuit board 2 and diffuse it to the heat sink 103, thereby optimizing the heat dissipation path and improving the heat dissipation effect.

[0020] A low beam reflector 3 is fixedly connected to the upper surface of the base 1. The low beam reflector 3 covers the LED circuit board 2. The inner surface of the low beam reflector 3 is curved. The light beam emitted by the LED light source can be reflected by the low beam reflector 3 and focused on the front end of the base 1, thereby ensuring the lighting distance and brightness.

[0021] A light shield 4 is fixedly connected to the front end of the base 1. Specifically, an installation groove 104 is provided on the upper surface of the front end of the base 1. One end of the light shield 4 is adapted to the installation groove 104, so that the end of the light shield 4 can be inserted into the installation groove 104 and fixed by bolts. The light shield 4 is located at the focal point of the low beam reflector 3. The light emitted by the LED light source is focused by the low beam reflector 3, and after the light shield 4 blocks part of the light, it is emitted through the lens 7. The end of the light shield 4 away from the base 1 is arc-shaped, which can correct the low beam pattern.

[0022] By opening an installation groove 104 at the front end of the base 1, one end of the light shield 4 can be inserted into the installation groove 104 and fixed with bolts. The light shielding effect can be guaranteed without repeatedly adjusting the position of the light shield 4, thus improving the installation efficiency of the car's low beam headlights.

[0023] A mounting bracket 5 is fixed to the front end of the base 1. The mounting bracket 5 is a plate-shaped structure. One side of the bracket is attached to the end face of the base 1 and is fixedly connected to the front end face of the base 1 by bolts. A mounting hole 501 is provided on the upper part of the mounting bracket 5 at the position corresponding to the light shield 4, so that the light shield 4 can pass through when the mounting bracket 5 is fixed, without blocking the light beam.

[0024] The mounting bracket 5 is fixedly connected to the housing 6 on the side away from the base 1. The housing 6 is a cylindrical structure. Multiple snap-fit ​​structures 601 are provided on the side wall of the housing 6. The multiple snap-fit ​​structures 601 are evenly arranged around the side wall of the housing 6. Specifically, the snap-fit ​​structure 601 includes a connecting plate. One end of the connecting plate is elastically connected to the side wall of the housing 6, and the other end is provided with a protrusion that protrudes from the inner surface of the housing 6.

[0025] The protrusion is located near the end of the housing 6 away from the mounting bracket 5, and a limiting plate 602 is provided on the end face of the housing 6 away from the mounting bracket 5. The limiting plate 602 is a ring structure, the outer diameter of which is equal to the diameter of the end face of the housing 6, and the inner diameter of which is adapted to the outer surface of the lens 7.

[0026] The lens 7 can be fixed by the snap-fit ​​structure 601 and the limiting plate 602. Specifically, the lens 7 is inserted into the housing 6 from the end of the housing 6 near the mounting bracket 5, and the lens 7 is pushed to move along the axis of the housing 6 until the outer edge of the lens 7 is located between the limiting plate 602 and the protrusion, thereby using the limiting plate 602 and the protrusion to snap-fit ​​and fix the lens 7.

[0027] Multiple positioning posts 603 are provided on the end face of the housing 6 near the mounting bracket 5. The multiple positioning posts 603 are all perpendicular to the end face of the housing 6. Positioning holes are provided on the mounting bracket 5 at the positions corresponding to the positioning posts 603. During installation, the positioning posts 603 can be inserted into the positioning holes. The positioning posts 603 and the positioning holes ensure that the relative position between the housing 6 and the mounting bracket 5 is fixed.

[0028] The housing 6 is also equipped with a heat insulation plate 8. The longitudinal section of the heat insulation plate 8 is arc-shaped, which is adapted to the inner wall of the housing 6 and covers the lower inner wall of the housing 6. One end of the heat insulation plate 8 is fixedly connected to the mounting bracket 5, and the other end extends to the lens 7. By setting the heat insulation plate 8, heat can be isolated and the service life of the vehicle lamp can be improved.

[0029] By setting a fixing groove on the upper surface of the base, the LED circuit board can be placed in the fixing groove, which increases the contact area between the LED circuit board and the base. At the same time, a boss is set on the lower surface of the base. The outer edge of the boss is connected to multiple heat sinks. During use, the boss located directly below the fixing groove can quickly absorb the heat of the LED circuit board and diffuse it to the heat sink, thereby optimizing the heat dissipation path and improving the heat dissipation effect.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A structure for a car low beam headlight, characterized in that, The device includes a base, a fixing groove is provided in the middle of the upper surface of the base, an LED circuit board is fixedly connected in the fixing groove, a boss is provided on the bottom surface of the base, the boss is located directly below the fixing groove, a number of heat sinks are arranged side by side at the rear end of the bottom surface of the boss, and the outer edge of the boss is connected to the number of heat sinks.

2. The automotive low beam headlight structure as described in claim 1, characterized in that, Multiple heat sinks are arranged side by side at the rear end of the upper surface of the base, and the multiple heat sinks on the upper surface of the base are correspondingly arranged with the multiple heat sinks on the lower surface of the base.

3. The automotive low beam headlight structure as described in claim 1, characterized in that, A low-beam reflector is fixedly connected to the upper surface of the base, and the low-beam reflector covers the LED circuit board.

4. The automotive low beam headlight structure as described in claim 3, characterized in that, A light-shielding plate is fixedly connected to the front end of the base. An installation groove is provided on the upper surface of the front end of the base. One end of the light-shielding plate is adapted to the installation groove, and the end of the light-shielding plate can be inserted into the installation groove and fixed.

5. The automotive low beam headlight structure as described in claim 4, characterized in that, The light-shielding plate is located at the focal point of the near-light reflector.

6. The automotive low beam headlight structure as described in claim 4, characterized in that, The end of the light-shielding plate furthest from the base is curved.

7. The automotive low beam headlight structure as described in claim 1, characterized in that, The base is fixed with a mounting bracket at its front end, and one side of the mounting bracket is in contact with the end face of the base.

8. The automotive low beam headlight structure as described in claim 7, characterized in that, The mounting bracket is fixedly connected to a housing on the side away from the base, and a lens is snapped onto the end of the housing away from the mounting bracket.

9. The automotive low beam headlight structure as described in claim 8, characterized in that, The end face of the housing near the mounting bracket is provided with multiple positioning posts, and the mounting bracket is provided with positioning holes at positions corresponding to the positioning posts.

10. The automotive low beam headlight structure as described in claim 8, characterized in that, The shell is also equipped with a heat insulation plate, which is adapted to the inner wall of the shell and covers the lower inner wall of the shell.

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