LED daytime running lamp for vehicle

Abstract

An LED daytime running lamp for a vehicle comprises a lampshade, a lamp shell, a reflecting mirror, a light source plate and an inner cover. The light source plate comprises an aluminum substrate and LED light sources, and a plurality of LED light sources are arranged on the aluminum substrate; the reflecting mirror is formed by connecting a plurality of reflecting bowls of side light emitting structures, and a plurality of light inlet holes are formed in the side walls of the reflecting bowls; the light source plate is arranged on the reflecting mirror, and one LED light source corresponds to one light inlet hole; the lamp shell and the lampshade are connected in a sealed mode to form a cavity, and an inner cover and a reflector are sequentially arranged in the cavity from front to back. An extension surface extending outwards is arranged on the edge of a light outlet of the reflector, a plurality of first grooves are formed in the extension surface, a plurality of second grooves are formed in the edge of the inner cover, the positions of the second grooves correspond to those of the first grooves, and the first grooves and the second grooves are used for airflow circulation. The utility model has a simple structure, and can effectively solve the problems in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, and in particular to an LED daytime running light for vehicles. Background Technology

[0002] With rising living standards and a faster pace of life, automobiles have become an indispensable means of transportation, and automotive lighting is a crucial component. Currently, daytime running lights (DRLs) are mandatory equipment mandated by law in many countries and regions. Installing DRLs makes your vehicle more visible to other vehicles and pedestrians, especially in low-visibility conditions such as fog, rain, and smoke. Furthermore, on narrow or winding roads, DRLs can also alert oncoming traffic to your vehicle.

[0003] Due to vehicle styling requirements, elongated daytime running lights have emerged, giving them a more fashionable and streamlined appearance. For example, Chinese patent CN212204395U discloses an LED daytime running light where a reflector is fixed inside the lamp housing, a PCB board is fixed to one outer side of the reflector, an LED module is fixed to the PCB board with one end of the LED module extending into the reflector, a driver board is fixed inside the lamp housing, and the driver board is connected to the PCB board. The power cord and heat dissipation valve are both fixed to the lamp cover, with the power cord connected to the driver board. The lamp cover is fixedly connected to the lamp housing. Because the PCB board is located on the side of the reflector, it changes the original structure where the PCB board was located at the rear of the reflector bowl. This facilitates PCB board installation and disassembly, avoids material waste during assembly, and saves costs. To prevent the internal structure of the lamp housing from being seen from the outside, the daytime running light of this structure has a gap of about 2mm between the reflector and the lamp housing. During use, a large amount of hot air is generated inside the lamp. However, because the reflector blocks the hot air concentrated inside the lamp housing, it cannot quickly reach all corners of the lamp housing. This results in a large temperature difference between different parts of the lamp housing. When the temperature in some areas is lower than the saturation temperature of the air inside the lamp, fogging will occur. Fogging not only affects the lifespan of the vehicle's lights but also greatly affects the lighting effect, thus affecting driving safety.

[0004] In addition, the daytime running lights of this structure, which use LED modules to reflect light through a reflector, are prone to unevenness and low brightness, and can no longer meet the ever-increasing demands.

[0005] In addition, the daytime running lights of this structure are mainly installed on the vehicle through the three mounting feet on the outside. However, with the development of curved vehicles, the curvature of the daytime running light covers is getting larger and larger. Due to the influence of product processing errors and assembly errors, there is an uneven gap between the daytime running lights and the body light holes after using this mounting structure, which affects the appearance quality. Utility Model Content

[0006] In view of the above-mentioned defects, the purpose of this utility model is to provide an automotive LED daytime running light. The inner cover greatly improves the optical quality of the beam. The first and second grooves, in conjunction with the heat-conducting sheet, prevent fogging of the lamp cover, thereby improving driving safety. The limiting installation structure improves the installation accuracy, making the gap between the lamp mounting hole in the vehicle body and the lamp cover uniform, and the appearance after installation is more beautiful. This invention can effectively solve the problems existing in the prior art.

[0007] The technical solution of this utility model is a vehicle LED daytime running light implemented in the following manner, including a lamp cover, a lamp housing, a reflector, a light source board, and an inner cover; the light source board includes an aluminum substrate and LED light sources, and multiple LED light sources are disposed on the aluminum substrate; the reflector is composed of multiple reflector bowls with side-emitting structures connected together, and multiple light-entry holes are disposed on the sidewalls of the reflector bowls; the light source board is disposed on the reflector, and one LED light source corresponds to one light-entry hole; the lamp housing and the lamp cover are sealed together to form a cavity, and the inner cover and the reflector are disposed sequentially from front to back inside the cavity; the reflector has an outwardly extending surface on its light-emitting port edge, and multiple first grooves are disposed on the extending surface; multiple second grooves are disposed on the edge of the inner cover, and the positions of the second grooves correspond to the first grooves; the first grooves and the second grooves are used for airflow; and heat-conducting sheets are disposed on the outer surfaces of both ends of the inner cover.

[0008] Furthermore, multiple Fresnel condenser lenses are integrally disposed on the inner surface of the inner cover facing the reflector, with one Fresnel condenser lens corresponding to one reflector bowl. The Fresnel condenser lenses are connected by a grid pattern. The Fresnel condenser lenses are used to adjust the brightness of the light beam, and the grid pattern is used to adjust the uniformity of the light beam.

[0009] Furthermore, the reflector and the light source board are limited by a limiting structure and then fixed by a fixing component. The limiting structure includes a limiting through hole on the reflector and a limiting boss on the aluminum substrate. The limiting boss cooperates with the limiting through hole to limit the light source board on the reflector. The fixing component includes a plastic fixing buckle and a screw. The plastic fixing buckle is provided with a fixing groove and a fixing hole. The fixing groove is used to insert the aluminum substrate to be fixed. A silicone layer is provided in the fixing groove and contacts the aluminum substrate through the silicone layer. The fixing hole is used for the screw to pass through and cooperate with the mounting hole post provided on the reflector to fix the light source board on the reflector.

[0010] Furthermore, the aluminum substrate has a limiting boss at each end of its bottom end face, and the reflector has two corresponding limiting through holes. Since the distance between the two ends is relatively long, the limiting structure also includes a slot. The reflector also has at least one slot between the two limiting through holes, and the slot is provided with a guide rib. The aluminum substrate is provided with a guide groove, which is used to cooperate with the guide rib to play a guiding role.

[0011] Furthermore, the bottom of the heat-conducting sheet extends through the edge of the inner cover and is located in front of the limiting boss, and the heat-conducting sheet and the limiting boss are connected by a heat-conducting adhesive.

[0012] Furthermore, the heat-conducting sheet is fixed to the inner cover by a connector, which is a rubber component, including an outer corrugation and an inner corrugation disposed inside the outer corrugation. A first connecting plate is integrally formed at the upper end of the outer corrugation and the inner corrugation, and a second connecting plate is integrally formed at the lower end of the outer corrugation and the inner corrugation. A buffer cavity is formed between the outer corrugation and the inner corrugation, and self-adhesive is disposed on the end faces of the first connecting plate and the second connecting plate.

[0013] Furthermore, the heat-conducting sheet is L-shaped and made of aluminum sheet with a thickness of 0.5-0.8mm.

[0014] Furthermore, the lamp cover is fixedly installed to the lamp mounting hole in the vehicle body by a limiting installation structure. The limiting installation structure includes at least two abutment ribs on the upper side of the lamp cover's outer surface, at least two adjustment grooves on the lower side of the lamp cover's outer surface, a rubber pad on the right side of the lamp cover's outer surface, and at least two mounting feet on the lamp housing. One mounting foot has a first limiting post and a first mounting hole, and the other mounting foot has a second limiting post and a second mounting hole. The first limiting post is used to cooperate with the limiting hole on the vehicle body to limit the forward and backward movement of the lamp. The second limiting post is used to cooperate with the limiting hole on the vehicle body to limit the left, right, up, and down movement of the lamp. The abutting rib is used to abut against the flange extending backward from the upper side of the inner edge of the lamp mounting hole to correct the gap. The adjusting groove is used to insert the flange extending backward from the lower side of the inner edge of the lamp mounting hole to correct the gap. The rubber pad is used to abut against the flange extending backward from the right side of the inner edge of the lamp mounting hole to correct the gap.

[0015] Furthermore, the lamp housing is provided with a wire outlet hole, and a waterproof connector sleeve made of PA6 material is detachably installed on the wire outlet hole.

[0016] Furthermore, one end of the waterproof connector sleeve is a connecting end, and a snap-fit ​​protrusion is provided on the connecting end. A waterproof gasket is fitted on the connecting end above the snap-fit ​​protrusion. The connecting end of the waterproof connector sleeve enters the outlet hole. The waterproof gasket is located between the snap-fit ​​protrusion and the lamp housing. The waterproof connector sleeve is rotated at a set angle, and the snap-fit ​​protrusion snaps into the snap-fit ​​groove provided around the outlet hole of the lamp housing, so that the waterproof connector sleeve is sealed and connected to the lamp housing.

[0017] This invention significantly improves the optical quality of the light beam by using an inner cover. The first and second grooves, in conjunction with the heat-conducting sheet, prevent fogging of the lamp cover, thus enhancing driving safety. The limiting installation structure improves installation accuracy, ensuring a uniform gap between the lamp mounting holes in the vehicle body and the lamp cover, resulting in a more aesthetically pleasing appearance after installation. This invention effectively solves the problems existing in the prior art. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention.

[0019] Figure 2 This is a rear view of the present invention.

[0020] Figure 3 yes Figure 2 Sectional view of AA.

[0021] Figure 4 yes Figure 3 Enlarged view of the structure within the dashed box.

[0022] Figure 5 yes Figure 2 A cross-sectional view of BB.

[0023] Figure 6 yes Figure 5 Enlarged view of the structure within the dashed box.

[0024] Figure 7 This is an exploded view of the structure of this utility model.

[0025] Figure 8 This is a perspective view of the fixing component in this utility model.

[0026] Figure 9 This is a structural schematic diagram of the lamp cover and lamp mounting hole after the present invention is installed on a vehicle.

[0027] Figure 10 This is a schematic diagram of the cross-sectional structure of the heat-conducting sheet when it is installed on the inner cover in this utility model.

[0028] In the diagram: lampshade 1, lamp housing 2, cable outlet 21, snap-fit ​​groove 22, reflector 3, reflector bowl 31, light inlet 311, extension surface 32, first groove 321, light source board 4, aluminum substrate 41. LED light source 42, inner cover 5, second groove 51, through hole 52, Fresnel condenser lens 53, grid pattern 54, limiting installation structure 6, contact rib 61, adjustment groove 62, mounting foot 63, first limiting post 631, first mounting hole 632, second limiting post 633, second mounting hole 634, limiting structure 7, limiting through hole 71, limiting boss 72, slot 73, fixing component 8, plastic fixing buckle 81, fixing groove 811, silicone layer 8111, fixing hole 812, screw 82, heat conduction sheet 9, connector 10, outer corrugation 101, inner corrugation 102, first connecting plate 103, second connecting plate 104, lamp mounting hole 100, flange 1001, rubber pad 20, waterproof connector sleeve 30, snap-fit ​​boss 301, waterproof rubber pad 40. Detailed Implementation

[0029] Depend on Figures 1-10This is a schematic diagram of the structure of the present invention. An LED daytime running light for vehicles includes a lamp cover 1, a lamp housing 2, a reflector 3, a light source board 4, and an inner cover 5. The light source board 4 includes an aluminum substrate 41 and multiple LED light sources 42. The reflector 3 is composed of multiple side-emitting reflector bowls 31 connected together. A light inlet hole 311 is provided on the side wall of each reflector bowl 31. The light source board 4 is mounted on the reflector 3, with one LED light source 42 corresponding to one light inlet hole 311. The reflector 3 has an outwardly extending surface 32 on its light outlet edge, and multiple first grooves 321 are provided on the extending surface 32. Multiple second grooves 51 are provided on the edge of the inner cover 5, with the positions of the second grooves 51 corresponding to the first grooves 321. The first grooves 321 and second grooves 51 are used for airflow. The lamp housing 2 and the lamp cover 1 are sealed together to form a cavity. The inner cover 5 and the reflector 3 are arranged sequentially from front to back inside the cavity. Specifically, the light source board 4 is mounted on the reflector 3, the reflector 3 is mounted inside the lamp housing 2, the inner cover 5 is mounted on the opening end of the lamp housing 2 to cover the internal structure of the lamp housing 2, and the lamp shade 1 is mounted on the outside of the inner cover 5 and is sealed to the lamp housing 2. In this embodiment, eighteen LED light sources 42 are mounted on the aluminum substrate 41, making the aluminum substrate 41 have a large area. The LED light sources 42 dissipate heat directly through the aluminum substrate, resulting in a longer service life. Due to the large area of ​​the aluminum substrate 41, the driving circuit can be directly mounted on the aluminum substrate 41 without the need for a separate driving board, making installation simpler and further saving production costs. When the LED light source 42 is working, the hot airflow inside the lamp can flow through the first groove 321 and the second groove 51, flowing from the rear of the reflector 3 to the front of the inner cover 5, quickly reaching all corners of the lamp shade 1, thereby avoiding large temperature differences in different parts of the lamp shade 1. When the temperature in some areas is lower than the saturation temperature of the air inside the lamp, fogging will occur.

[0030] With the development of vehicle curvature, the curvature of the daytime running light lens 1 is getting larger and larger. When the lens 1 has a large curvature, the hot airflow cannot quickly reach both ends of the lens 1 by relying solely on the first groove 321 and the second groove 51. Therefore, fogging is likely to occur at both ends of the lens 1. Heat-conducting plates 9 are respectively provided on the outer surfaces of both ends of the inner cover 5. The hot airflow inside the lamp flows from the rear of the reflector 3 to the front of the inner cover 5 through the first groove 321 and the second groove 51, and the heat is quickly reached to both ends of the lens 1 by the heat-conducting plates 9, thereby avoiding the problem that the hot airflow cannot quickly reach both ends of the lens 1.

[0031] To improve the effective utilization of light, the reflector 3 and the light source plate 4 are limited by a limiting structure 7, and then fixed to the reflector 3 by a fixing component 8. The limiting structure 7 includes a limiting through hole 71 on the reflector 3 and a limiting boss 72 on the aluminum substrate 41. The limiting boss 72 cooperates with the limiting through hole 71 to limit the light source plate 4 to the reflector 3, and then is fixed to the reflector 3 by the fixing component 8. The limiting structure 7 improves the installation accuracy of the light source plate 4, ensuring that the light emission center of the LED light source 42 is located at the focal point of the reflector bowl 31, thereby improving the effective utilization of light and further improving the beam quality. In this embodiment, the aluminum substrate 41 is provided with a limiting boss 72 at each end of its bottom end face, and the reflector 3 is provided with two corresponding limiting through holes 71. Since the distance between the two ends is relatively long, the limiting structure 7 also includes a slot 73. The reflector 3 is also provided with at least one slot 73 between the two limiting through holes 71, and the slot 73 is provided with a guide rib. The aluminum substrate 41 is provided with a guide groove. When the light source board 4 is installed, the aluminum substrate 41 is inserted into the slot 73. The guide groove and the guide rib cooperate to make the aluminum substrate 41 move down to the same position, so that the limiting boss 72 can be quickly and accurately inserted into the limiting through hole 71 and cooperate with it, making the installation more convenient and faster.

[0032] To prevent damage to the light source board 4 due to friction between it and the fixing component 8 during use, the fixing component 8 includes a plastic fixing buckle 81 and screws 82. The plastic fixing buckle 81 is provided with a fixing groove 811 and a fixing hole 812. The fixing groove 811 is used to insert the aluminum substrate 41 to be fixed. A silicone layer 8111 is provided in the fixing groove 811, which contacts the aluminum substrate 41 through the silicone layer 8111. The fixing hole 812 is used for the screw 82 to pass through and engage with the mounting post provided on the reflector 3. In this embodiment, the reflector 3 is provided with three mounting posts, and three fixing components 8 are used to fix the light source board 4 to the reflector 3, which improves the installation stability. At the same time, the silicone layer 8111 protects the outer surface of the aluminum substrate 41 and provides cushioning, preventing direct contact from damaging the circuit on the aluminum substrate 41, and providing cushioning during vibration, further improving the service life of the light source board 4.

[0033] To improve heat conduction, the bottom of the heat-conducting sheet 9 extends through the edge of the inner cover 5 and is located in front of the limiting boss 72. The heat-conducting sheet 9 and the limiting boss 72 are connected by thermally conductive adhesive. Specifically, the heat-conducting sheet 9 is fixed to the inner cover 5 by a connector 10. The connector 10 is a rubber component, including an outer corrugation 101 and an inner corrugation 102 disposed inside the outer corrugation 101. A first connecting plate 103 is integrally formed at the upper end of the outer corrugation 101 and the inner corrugation 102, and a second connecting plate 104 is integrally formed at the lower end of the outer corrugation 101 and the inner corrugation 102, thereby forming a buffer cavity between the outer corrugation 101 and the inner corrugation 102. Self-adhesive is provided on the end faces of the first connecting plate 103 and the second connecting plate 104. In this embodiment, heat-conducting sheets 9 are respectively disposed on the upper sides of both ends of the inner cover 5. The heat-conducting sheets 9 are L-shaped and made of aluminum sheets with a thickness of 0.5-0.8 mm, preferably 0.5 mm. When the heat-conducting sheet 9 is installed, its long side passes through the through-hole 52 provided on the edge of the inner cover 5 and is fixed to the outside of the inner cover 5 by the connector 10. Its short side is located in front of the limiting boss 72. The two are connected by thermally conductive adhesive, which facilitates the aluminum substrate 41 to conduct heat to the heat-conducting sheet 9, improves the heat transfer effect, and allows heat to quickly reach both ends of the lampshade 1, thereby avoiding the problem that the hot airflow cannot quickly reach both ends of the lampshade 1. When the lampshade 1 is wide, the heat-conducting sheet 9 can be set on the end faces of both sides of the inner cover 5.

[0034] To improve beam quality and prevent issues such as dimness and unevenness, multiple Fresnel condenser lenses 53 are integrally formed on the inner surface of the inner cover 5 facing the reflector 3. Each Fresnel condenser lens 53 corresponds to one reflector bowl 31, and the multiple Fresnel condenser lenses 53 are connected by a grid pattern 54. The Fresnel condenser lenses 53 are used to adjust the beam brightness, and the grid pattern 54 is used to adjust the beam uniformity. In this embodiment, eighteen Fresnel condenser lenses 53 are integrally formed on the inner surface of the inner cover 5 facing the reflector 3, and the eighteen Fresnel condenser lenses 53 are connected by a grid pattern 54. The Fresnel condenser lenses 53 increase the amount of light collected, improve the effective utilization of light, further improve the beam brightness, and the grid pattern 54 homogenizes the light.

[0035] Furthermore, the lamp cover 1 is fixedly installed to the lamp mounting hole 100 in the vehicle body by a limiting installation structure 6. The limiting installation structure 6 ensures that the gap between the lamp mounting hole 100 and the lamp cover 1 is uniform, resulting in a more aesthetically pleasing appearance. Specifically, the limiting installation structure 6 includes at least two mounting feet 63 on the lamp housing 2. One mounting foot 63 is provided with a first limiting post 631 and a first mounting hole 632, and the other mounting foot 63 is provided with a second limiting post 633 and a second mounting hole 634. The first limiting post 631 is used to cooperate with the limiting hole on the vehicle body to limit the lamp to move left, right, up, and down, so that the gap between the left edge, right edge, upper edge, and lower edge of the lamp mounting hole 100 and the lamp cover 1 is uniform. The second limiting post 633 is used to cooperate with the limiting hole on the vehicle body to limit the lamp to move forward and backward, so that the front and rear positions of the lamp cover 1 are accurate. Finally, it is fixed to the vehicle body by bolts passing through the mounting hole. When the lampshade 1 has a large curvature, the machining accuracy of the lamp mounting hole 100 will deviate. After the lamp is installed, due to the curvature, the gap between the lampshade 1 and the right edge, upper edge, and lower edge of the lamp mounting hole 100 will be uneven. To ensure that the gap between the lampshade and the lamp mounting hole 100 is uniform after installation, the limiting installation structure 6 also includes at least two abutment ribs 61 on the upper side of the lampshade 1's outer surface, at least two adjustment grooves 62 on the lower side of the lampshade 1's outer surface, and a rubber pad 20 on the right side of the lampshade 1's outer surface. The lamp is positioned by the limiting post. When the lamp is positioned and fixed to the vehicle body through the mounting hole, the abutment rib 61 abuts against the flange 1001 extending backward from the upper inner edge of the lamp mounting hole 100, the adjusting groove 62 inserts the flange 1001 extending backward from the lower inner edge of the lamp mounting hole 100, and the rubber pad 20 abuts against the flange 1001 extending backward from the right inner edge of the lamp mounting hole 100. The uneven gap between the lamp and the lamp mounting hole 100 is adjusted and corrected by the abutment rib 61, the adjusting groove 62, and the rubber pad 20, so that the gap between the upper edge, lower edge, right edge of the lamp mounting hole 100 and the lamp cover 1 is more uniform.

[0036] In addition, to prevent the soft rubber plug used in the lamp housing 2 in the prior art from easily deforming and causing water leakage when subjected to external force, a wire outlet hole 21 is provided on the lamp housing 2. A waterproof connector sleeve 30 is detachably installed on the wire outlet hole 21. The waterproof connector sleeve 30 is made of PA6. One end of the waterproof connector sleeve 30 is a connecting end, which is provided with a snap-fit ​​boss 301. A waterproof rubber gasket 40 is fitted on the connecting end above the snap-fit ​​boss 301. The connector end enters the outlet hole 21. The waterproof rubber gasket 40 is located between the snap-fit ​​boss 301 and the lamp housing 2. The waterproof connector sleeve 30 rotates 15-45 degrees, and the snap-fit ​​boss 301 snaps into the snap-fit ​​groove 22 provided around the outlet hole 21 of the lamp housing 2. The snap-fit ​​groove 22 restricts the snap-fit ​​boss 301 from continuing to rotate to complete the fixed installation. At the same time, the waterproof rubber gasket 40 is compressed so that the waterproof connector sleeve 30 is sealed and connected to the lamp housing 2. The installation is convenient and quick, thus avoiding the water leakage problem of soft rubber plugs.

[0037] This utility model features a simple structure and convenient use. The beam brightness is adjusted by the Fresnel focusing lens 53 on the inner cover 5, and the beam uniformity is adjusted by the grid pattern 54, greatly improving the optical quality of the beam. The first groove 321 and the second groove 51 facilitate the rapid flow of hot air from behind the reflector 3 to all corners of the lamp cover 1, thus avoiding large temperature differences between different parts of the lamp cover 1. When the temperature in some areas is lower than the saturation temperature of the air inside the lamp, fogging will occur. The heat-conducting sheet 9 prevents slow flow of hot air at both ends of the large-curvature lamp cover 1, which can cause fogging due to temperatures below the saturation temperature of the air inside the lamp, further improving lamp life and driving safety. The limiting installation structure 6 improves installation accuracy, ensuring a uniform gap between the lamp mounting hole 100 in the vehicle body and the lamp cover 1, resulting in a more aesthetically pleasing appearance after installation.

[0038] Although specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and various changes or modifications can be made to these embodiments without departing from the principles and essence of the present invention. The scope of protection of the present invention is defined only by the appended claims.

Claims

1. A vehicle LED daytime running light, characterized in that, The system includes a lampshade, a lamp housing, a reflector, a light source board, and an inner cover. The light source board includes an aluminum substrate and LED light sources, with multiple LED light sources disposed on the aluminum substrate. The reflector is composed of multiple side-emitting reflector bowls connected together, with multiple light-entry holes disposed on the sidewalls of the reflector bowls. The light source board is disposed on the reflector, with one light-entry hole corresponding to one LED light source. The lamp housing and the lampshade are sealed together to form a cavity, and the inner cover and the reflector are disposed sequentially from front to back inside the cavity. The reflector has an outwardly extending surface on its light-exit edge, and multiple first grooves are disposed on the extending surface. Multiple second grooves are disposed on the edge of the inner cover, with the positions of the second grooves corresponding to the first grooves. The first and second grooves are used for airflow. Heat-conducting sheets are disposed on the outer surfaces of both ends of the inner cover.

2. The automotive LED daytime running light according to claim 1, characterized in that, Multiple Fresnel condenser lenses are integrally disposed on the inner surface of the inner cover facing the reflector. Each Fresnel condenser lens corresponds to one reflector bowl. The multiple Fresnel condenser lenses are connected by a grid pattern. The Fresnel condenser lenses are used to adjust the brightness of the light beam, and the grid pattern is used to adjust the uniformity of the light beam.

3. The automotive LED daytime running light according to claim 1, characterized in that, The reflector and the light source board are limited by a limiting structure and then fixed by a fixing component. The limiting structure includes a limiting through hole on the reflector and a limiting boss on the aluminum substrate. The limiting boss cooperates with the limiting through hole to limit the light source board on the reflector. The fixing component includes a plastic fixing buckle and a screw. The plastic fixing buckle has a fixing groove and a fixing hole. The fixing groove is used to insert the aluminum substrate to be fixed. A silicone layer is provided in the fixing groove and contacts the aluminum substrate through the silicone layer. The fixing hole is used for the screw to pass through and cooperate with the mounting hole post provided on the reflector to fix the light source board on the reflector.

4. The automotive LED daytime running light according to claim 3, characterized in that, The aluminum substrate has a limiting boss at each end of its bottom end face. The reflector has two corresponding limiting through holes. Since the distance between the two ends is long, the limiting structure also includes a slot. The reflector has at least one slot between the two limiting through holes, and the slot is provided with a guide rib. The aluminum substrate has a guide groove, which is used to cooperate with the guide rib to play a guiding role.

5. A vehicle LED daytime running light according to claim 4, characterized in that, The bottom of the heat-conducting sheet extends through the edge of the inner cover and is located in front of the limiting boss, and the heat-conducting sheet and the limiting boss are connected by a heat-conducting adhesive.

6. A vehicle LED daytime running light according to claim 5, characterized in that, The heat-conducting sheet is fixed to the inner cover by a connector. The connector is a rubber part, including an outer corrugation and an inner corrugation provided inside the outer corrugation. A first connecting plate is integrally formed at the upper end of the outer corrugation and the inner corrugation, and a second connecting plate is integrally formed at the lower end of the outer corrugation and the inner corrugation. A buffer cavity is formed between the outer corrugation and the inner corrugation. Self-adhesive is provided on the end faces of the first connecting plate and the second connecting plate.

7. A vehicle LED daytime running light according to claim 6, characterized in that, The heat-conducting sheet is L-shaped and made of aluminum sheet with a thickness of 0.5-0.8mm.

8. A vehicle LED daytime running light according to claim 1, characterized in that, The lamp cover is fixedly installed to the lamp mounting hole in the vehicle body by a limiting installation structure. The limiting installation structure includes at least two abutment ribs on the upper side of the lamp cover's outer surface, at least two adjustment grooves on the lower side of the lamp cover's outer surface, a rubber pad on the right side of the lamp cover's outer surface, and at least two mounting feet on the lamp housing. One mounting foot has a first limiting post and a first mounting hole, and the other mounting foot has a second limiting post and a second mounting hole. The second limiting post is used to cooperate with the limiting hole on the vehicle body to limit the forward and backward movement of the lamp. The first limiting post is used to cooperate with the limiting hole on the vehicle body to limit the left, right, up, and down movement of the lamp. The abutting rib is used to abut against the flange extending backward from the upper side of the inner edge of the lamp mounting hole to correct the gap. The adjusting groove is used to insert the flange extending backward from the lower side of the inner edge of the lamp mounting hole to correct the gap. The rubber pad is used to abut against the flange extending backward from the right side of the inner edge of the lamp mounting hole to correct the gap.

9. A vehicle LED daytime running light according to claim 1, characterized in that, The lamp housing is provided with a wire outlet hole, and a waterproof connector sleeve made of PA6 material is detachably installed on the wire outlet hole.

10. A vehicle LED daytime running light according to claim 9, characterized in that, One end of the waterproof connector sleeve is a connecting end, and a snap-fit ​​protrusion is provided on the connecting end. A waterproof gasket is fitted on the connecting end above the snap-fit ​​protrusion. The connecting end of the waterproof connector sleeve enters the outlet hole. The waterproof gasket is located between the snap-fit ​​protrusion and the lamp housing. The waterproof connector sleeve is rotated at a set angle, and the snap-fit ​​protrusion snaps into the snap-fit ​​groove provided around the outlet hole of the lamp housing, so that the waterproof connector sleeve is sealed and connected to the lamp housing.

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