An LED vehicle lamp

Abstract

The application provides an LED vehicle lamp, which comprises an LED chip assembly and a light-transmitting piece, the LED chip assembly comprises a substrate and LED chip groups, the LED chip groups are respectively arranged on two sides of the substrate in the thickness direction, each LED chip group comprises LED chips, the light-transmitting piece is sleeved outside the LED chip assembly, the light-transmitting piece is provided with light-transmitting windows corresponding to the positions of the LED chip groups, the opposite inner walls of the light-transmitting windows along the length direction of the substrate are respectively the top inner wall and the bottom inner wall of the light-transmitting window, the top inner wall and the bottom inner wall are both provided with first convex stripe patterns extending along the thickness direction of the substrate, the outer surface of the top wall of the light-transmitting piece is provided with second convex stripe patterns, and the extending direction of the second convex stripe patterns is perpendicular to the extending direction of the first convex stripe patterns. The application solves the problem that the existing LED lamp can only irradiate two opposite surfaces and the light-emitting angle is limited, realizes the dispersion of light to different directions, and makes the light-emitting more uniform.

Description

Technical Field

[0001] This invention relates to the field of automotive lighting, and more specifically to an LED vehicle light. Background Technology

[0002] LED lights are widely used in automotive lighting due to their high energy efficiency, long lifespan, fast response speed, and strong controllability. Currently, most LED automotive lights on the market have LED chips placed on two opposite surfaces of a circuit board. This structure allows the light to emit light primarily from these two surfaces, forming two main light-emitting surfaces. However, this structural layout limits the effective light emission from the top area of ​​the light headlight (perpendicular to the circuit board surface) and the lateral areas of the circuit board (perpendicular to the two main light-emitting surfaces), resulting in dark or weak light areas. This limitation restricts the light emission angle and illumination distribution range of this type of LED light. For automotive external signal lights or headlights such as parking lights and license plate lights, which require a large emission angle or uniform surface illumination, existing two-sided LED automotive lights often fail to meet their light distribution requirements due to insufficient light emission from the top and sides.

[0003] Some LED lights now achieve multi-directional light emission by adding LED chips and mounting them on five surfaces. However, this greatly increases the thickness of the LED light, and the LED chips are no longer at the focal point.

[0004] Therefore, how to provide an LED vehicle light with a wider light emission angle and more uniform light output, especially one that can meet the application requirements of position lights, license plate lights, etc., is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The purpose of this invention is to provide an LED vehicle light that solves the problems of limited light-emitting angle and uneven light emission in existing LED vehicle lights.

[0006] To achieve the above objectives, the present invention provides an LED vehicle light, comprising an LED chip assembly and a light-transmitting element. The LED chip assembly includes a substrate and LED chip groups, which are respectively disposed on two sides of the substrate along the thickness direction. Each LED chip group includes an LED chip. The light-transmitting element is sleeved on the LED chip assembly. A light-transmitting window is provided on the light-transmitting element at the position corresponding to the LED chip group. The two inner walls opposite to each other along the length direction of the substrate are the top inner wall and the bottom inner wall of the light-transmitting window, respectively. The top inner wall and the bottom inner wall are each provided with a first raised stripe extending along the thickness direction of the substrate. A second raised stripe is provided on the outer surface of the top wall of the light-transmitting element, and the extension direction of the second raised stripe is perpendicular to the extension direction of the first raised stripe.

[0007] As can be seen from the above solution, this invention, by setting first raised stripes on the top and bottom inner walls of the light-transmitting window and second raised stripes on the outer surface of the light-transmitting element, changes the direction of light, emitting light from multiple angles and achieving diffuse reflection. This ensures sufficient light illuminates the surrounding and top dark areas, solving the problem that existing LED lights can only illuminate two opposite surfaces, resulting in a limited light-emitting angle. Simultaneously, the extension directions of the first and second raised stripes are perpendicular, further dispersing the light in different directions and making the light emission more uniform, thus better meeting the application requirements of LED lights such as marker lights and license plate lights.

[0008] A further option is to make the outer peripheral wall of the light-transmitting element a fogged outer peripheral wall.

[0009] A further solution is to also atomize the inner peripheral wall of the light-transmitting component, with the inner peripheral wall corresponding to the outer peripheral wall.

[0010] As can be seen from the above scheme, the inner and outer peripheral walls can also form diffuse reflection areas after being atomized, which is softer than the raised stripe structure. This is suitable for the outer peripheral wall, which originally had a certain light output area, making the final LED light body emit a more uniform light intensity.

[0011] A further design involves an arc-shaped top surface of the light-transmitting element, with both ends of the second raised stripe extending above the lowest point of the LED chip assembly; the outer peripheral wall of the light-transmitting element, after being atomized, is located below the second raised stripe.

[0012] As can be seen from the above scheme, the above structure is adapted to the light-emitting path of the LED chip to achieve uniform light emission.

[0013] A further solution is that the two inner walls opposite each other along the width direction of the substrate are both inner walls of the light-transmitting window. Each inner wall has a first inclined inner wall on the side closest to the LED chip group. The first inclined inner wall is inclined to the inner wall. The inner wall is an inner wall that can produce diffuse reflection. For example, the inner wall can achieve diffuse reflection by atomization treatment, or the inner wall can be made of transparent material with added diffusing agent to produce a fog white effect to achieve diffuse reflection.

[0014] As can be seen from the above scheme, the light transmission direction is changed by the setting of the first inclined sidewall. At the same time, the inner sidewall is a sidewall that can produce diffuse reflection, which can also change the light transmission direction. Combined with the first and second raised stripes, a wider light emission angle is achieved.

[0015] A further solution is to have a slot inside the light-transmitting component, with the LED chip group near the first end of the substrate, and the first end of the substrate being inserted into the slot, the thickness of the slot matching the thickness of the substrate.

[0016] As can be seen from the above solution, fixing the substrate in the slot ensures the stability of the light source, and the installation of the LED vehicle light is also more stable.

[0017] A further option is that the lower end of the inner sidewall of the card slot is connected to a second inclined inner wall, which is inclined to the plane containing the length and width of the substrate.

[0018] As can be seen from the above scheme, the second inclined inner wall plays a buffering role in the installation of the substrate, and at the same time, the second inclined inner wall can further change the direction of light and distribute the light.

[0019] A further embodiment is that there are multiple first raised stripes, which are arranged along the width direction of the substrate; and there are multiple second raised stripes, which are arranged along the thickness direction of the substrate.

[0020] As can be seen from the above scheme, the arrangement of multiple first raised stripes and multiple second raised stripes improves the efficiency and degree of light dispersion.

[0021] A further solution is that the lower end of the light-transmitting element is connected to a housing, and the second end of the LED chip group, which is away from the substrate, is inserted into the housing; a contact pin is provided at the end of the substrate away from the LED chip group, and the contact pin is provided on both sides of the substrate in the thickness direction; a notch is provided on the housing, and the contact pin protrudes from the notch from inside the housing.

[0022] As can be seen from the above scheme, the shell provides a certain degree of protection for the substrate and further improves the stability of the substrate fixation.

[0023] A further solution is to provide a snap-fit ​​mounting hole on the light-transmitting component, which is located below the light-transmitting window; and to provide a snap-fit ​​protrusion on the housing, which can be detachably installed in the snap-fit ​​mounting hole.

[0024] As can be seen from the above scheme, the light-transmitting component and the housing are connected by snap-fit, which improves assembly efficiency and ensures installation stability.

[0025] A further embodiment is that the end of the housing facing the light-transmitting element is provided with a first ultrasonic welding surface, and the end of the light-transmitting element facing the housing is provided with a second ultrasonic welding surface; when the housing and the light-transmitting element are connected, the first ultrasonic welding surface and the second ultrasonic welding surface abut against each other.

[0026] As can be seen from the above scheme, the arrangement of the first ultrasonic welding surface and the second ultrasonic welding surface allows the housing and the light-transmitting component to be further fixedly connected through ultrasonic treatment, thereby improving the connection stability. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of the LED vehicle light of the first embodiment.

[0028] Figure 2 This is an exploded view of the LED vehicle light of the first embodiment.

[0029] Figure 3 This is a structural schematic diagram of the light-transmitting component from a first-view perspective in the first embodiment.

[0030] Figure 4 This is a structural schematic diagram of the light-transmitting component from a second perspective in the first embodiment.

[0031] Figure 5 This is a schematic diagram of the housing structure of the first embodiment.

[0032] Figure 6 This is a structural schematic diagram of the LED vehicle light of the second embodiment.

[0033] Figure 7 This is an exploded view of the LED vehicle light structure of the second embodiment.

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0035] First Embodiment See Figures 1 to 5 The LED vehicle light provided in this embodiment includes a light-transmitting element 1, a housing 2, and an LED chip assembly 3. The light-transmitting element 1 is disposed above the housing 2 and is connected to the housing 2. The LED chip assembly 3 is disposed inside the light-transmitting element 1 and the housing 2.

[0036] See Figure 1 and Figure 2 The LED chip assembly 3 includes a substrate 31, an LED chip group 32, and a contact pin 33. The substrate 31 is a circuit board, and both the LED chip group 32 and the contact pin 33 are disposed on the substrate 31. The LED chip groups 32 are respectively disposed on both sides of the substrate 31 along the thickness direction Z1. Each LED chip group 32 includes a plurality of LED chips 321, and the LED chips are light sources. The contact pin 33 is disposed at the end of the substrate 31 away from the LED chip group 32, and the contact pin 33 is disposed on both sides of the substrate 31 along the thickness direction Z1.

[0037] See Figures 1 to 4The light-transmitting element 1 is sleeved outside the LED chip assembly 3, and is made of a light-transmitting material well known to those skilled in the art. Each position of the light-transmitting element 1 corresponding to the LED chip assembly 32 has a light-transmitting window 11. The two opposite inner walls of the light-transmitting window 11 along the length X1 of the substrate 31 are the top inner wall 111 and the bottom inner wall 112, respectively. Both the top inner wall 111 and the bottom inner wall 112 are provided with a first raised stripe 113 extending along the thickness Z1 of the substrate 31. The outer surface of the top wall of the light-transmitting element 1 is provided with a second raised stripe 12, the extension direction of which is perpendicular to the extension direction of the first raised stripe 113. In addition, the outer peripheral wall 13 of the light-transmitting element 1 is an atomized outer peripheral wall. The atomization treatment is a process well known to those skilled in the art, and the atomization treatment gives the outer surface of the outer peripheral wall 13 of the light-transmitting element 1 a rough surface with micro-pits. Furthermore, the inner peripheral wall 131 of the light-transmitting element is also atomized, and the inner peripheral wall 131 is correspondingly arranged with the outer peripheral wall 13. In this embodiment, there are multiple first raised stripes 113, which are arranged along the width direction Y1 of the substrate 31; there are multiple second raised stripes 12, which are arranged along the thickness direction Z1 of the substrate 31.

[0038] In this embodiment, the top surface of the light-transmitting element 1 has an arc-shaped structure, and the two ends of the second raised stripe 12 extend above the lowest end of the LED chip assembly 32. The outer peripheral wall 13 of the light-transmitting element 1, which has undergone atomization treatment, is located below the second raised stripe 12.

[0039] The two inner walls of the light-transmitting window 11 opposite each other along the width direction Y1 of the substrate 31 are both side inner walls 114 of the light-transmitting window. Each side inner wall 14 is provided with a first inclined inner wall 14 on the side near the LED chip group 32. The first inclined inner wall 14 is inclined to the side inner wall 114. In this embodiment, the side inner wall 114 is a side inner wall that can generate diffuse reflection. The side inner wall 114 can achieve diffuse reflection by atomization treatment, or the side inner wall 114 can be made of transparent material with added diffusing agent to produce a fog white effect to achieve diffuse reflection.

[0040] The light-transmitting element 1 has a slot 15 inside. The first end 311 of the LED chip group 32 is close to the substrate 31 and is inserted into the slot 31. The thickness of the slot 31 matches the thickness of the substrate 31. In this embodiment, the slot 15 is centrally located. The LED chip group 32 does not extend into the slot 15, that is, the distance between the top side of the LED chip group 32 near the top of the substrate 31 and the top of the substrate 31 is greater than the depth of the slot 15. The lower end of the inner sidewall of the slot 15 is connected to a second inclined inner wall 16, which is inclined to the plane containing the length and width of the substrate 31.

[0041] See Figures 1 to 5The second end 312 of the LED chip assembly 32 is away from the substrate 31, and the first end 311 and the second end 312 are opposite each other along the length direction X1 of the substrate 31. The second end 312 is inserted into the housing 2. A notch 24 is provided on the housing 2, and the stylus 33 protrudes from the notch 34 from the inside of the housing 2.

[0042] The light-transmitting component 1 is provided with a snap-fit ​​mounting hole 17 and a matching protrusion 18. The snap-fit ​​mounting hole 17 is located below the light-transmitting window 11, and the matching protrusion 18 extends downward along the circumference of the light-transmitting component 1.

[0043] The housing 2 is provided with a snap-fit ​​protrusion 21 and a matching groove 23. The snap-fit ​​protrusion 21 is detachably installed in the snap-fit ​​mounting hole 17, and the matching protrusion 18 is matched with the matching groove 23, and the matching protrusion 18 can extend into the matching groove 23. In this embodiment, the end of the housing 2 facing the light-transmitting element 1 is provided with a first ultrasonic welding surface 22, and the end of the light-transmitting element 1 facing the housing 2 is provided with a second ultrasonic welding surface 19. When the housing 2 is connected to the light-transmitting element 1, the first ultrasonic welding surface 22 and the second ultrasonic welding surface 19 abut against each other, so that the housing 2 and the light-transmitting element 1 can be further fixedly connected by ultrasonic treatment, thereby improving the connection stability.

[0044] It should be noted that, in this embodiment, with the length direction X1 of the substrate 31 as the reference direction, the first end 311 of the substrate 31 is above the second end 312 of the substrate 31.

[0045] This embodiment alters the direction of light emitted from the LED chip assembly 32 by providing first raised stripes 113 on the top inner wall 111 and bottom inner wall 112 of the light-transmitting window 11, and second raised stripes 12 on the outer surface of the light-transmitting element 1. This allows for multi-angle light emission, achieving diffuse reflection and ensuring sufficient light to illuminate the surrounding and top dark areas. This solves the problem of existing LED lights only illuminating two opposite surfaces, resulting in limited light emission angles. Furthermore, the extension directions of the first raised stripes 113 and the second raised stripes 12 are perpendicular, further dispersing the light in different directions and making the light emission more uniform. Additionally, the outer peripheral wall 13, after being treated with a frosting process, can also form a diffuse reflection area, which is softer than the raised stripe structure. This design complements the outer peripheral wall 13, which originally had some light output, resulting in a more uniform intensity of the final LED light source.

[0046] Second Embodiment See Figure 6 and Figure 7 The LED vehicle light provided in this embodiment is the same as that in the first embodiment, both including a light-transmitting element 4, a housing 5, and an LED chip assembly 6. Similar to the first embodiment, the light-transmitting element 4 is disposed above the housing 5 and is connected to the housing 5. The LED chip assembly 6 is disposed within the light-transmitting element 5 and the housing 6.

[0047] The LED chip assembly 6 includes a substrate 61 and LED chip groups 62 disposed on both sides of the substrate 61 along the thickness direction Z2. Each LED chip group 62 includes a plurality of LED chips, which are light sources.

[0048] Similar to the first embodiment, the light-transmitting element 4 is sleeved around the LED chip assembly 6. Each position of the light-transmitting element 4 corresponding to the LED chip assembly 62 has a light-transmitting window 41. The two opposing inner walls of the light-transmitting window 41 along the length X2 of the substrate 61 are the top inner wall and the bottom inner wall, respectively. Both the top and bottom inner walls are provided with a first raised stripe 411 extending along the thickness Z2 of the substrate 61. The outer surface of the top wall of the light-transmitting element 4 is provided with a second raised stripe 42, the extension direction of which is perpendicular to the extension direction of the first raised stripe 411. Furthermore, the outer peripheral wall 43 of the light-transmitting element 4 is an atomized outer peripheral wall. Atomization is a process well known to those skilled in the art, and atomization gives the outer surface of the outer peripheral wall 43 of the light-transmitting element 4 a rough surface with micro-pits. In this embodiment, there are multiple first raised stripes 411, which are arranged along the width direction Y2 of the substrate 61; there are multiple second raised stripes 42, which are arranged along the thickness direction Z2 of the substrate 61.

[0049] In this embodiment, the top surface of the light-transmitting element 4 has an arc-shaped structure, and the two ends of the second raised stripe 42 extend above the lowest end of the LED chip group 62. The outer peripheral wall 43 of the light-transmitting element 4, which has undergone atomization treatment, is located below the second raised stripe 42.

[0050] The two inner walls of the light-transmitting window 41 opposite each other along the width direction Y2 of the substrate 61 are both side inner walls 412 of the light-transmitting window. In this embodiment, the side inner walls 412 are also side inner walls that can generate diffuse reflection.

[0051] The light-transmitting component 4 is provided with a snap-fit ​​mounting hole 44, which is located below the light-transmitting window 41.

[0052] The housing 5 is provided with a snap-fit ​​protrusion 51, which can be detachably installed in the snap-fit ​​mounting hole 44. The housing 5 and the light-transmitting element 4 can be fixedly connected by ultrasonic welding, thereby improving the connection stability.

[0053] Unlike the first embodiment, in this embodiment, the housing 5 has several through holes 52 arranged circumferentially at the end near the light-transmitting element 4. These through holes 52 are heat dissipation holes to facilitate heat dissipation of the LED vehicle light. At the same time, the LED vehicle light contact 53 is located at the end of the housing 5 away from the light-transmitting element 4, and the contact 53 is electrically connected to the substrate 61.

[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An LED vehicle light, comprising an LED chip assembly and a light-transmitting element, wherein the LED chip assembly includes a substrate and LED chip groups, the LED chip groups are respectively disposed on two sides of the substrate along the thickness direction, each LED chip group includes an LED chip, and the light-transmitting element is sleeved around the LED chip assembly, characterized in that: Each of the light-transmitting components has a light-transmitting window at the position corresponding to the LED chip group. The two inner walls of the light-transmitting window that are opposite each other along the length direction of the substrate are the top inner wall and the bottom inner wall of the light-transmitting window, respectively. Both the top inner wall and the bottom inner wall are provided with a first raised stripe extending along the thickness direction of the substrate. The outer surface of the top wall of the light-transmitting element is provided with a second raised stripe, and the extension direction of the second raised stripe is perpendicular to the extension direction of the first raised stripe.

2. The LED vehicle light according to claim 1, characterized in that: The outer peripheral wall of the light-transmitting element is an outer peripheral wall that has undergone atomization treatment.

3. The LED vehicle light according to claim 2, characterized in that: The top surface of the light-transmitting element has an arc-shaped structure, and the two ends of the second raised stripe extend to the top of the lowest end of the LED chip group. The outer peripheral wall of the light-transmitting element after atomization is located below the second raised stripe.

4. The LED vehicle light according to claim 1, characterized in that: The two inner walls opposite each other along the width direction of the substrate are the side inner walls of the light-transmitting window. Each side inner wall is provided with a first inclined inner wall on the side near the LED chip group. The first inclined inner wall is inclined to the side inner wall. The inner side wall is an inner side wall capable of producing diffuse reflection.

5. The LED vehicle light according to claim 1, characterized in that: The light-transmitting element has a slot inside, the LED chip group is close to the first end of the substrate, the first end of the substrate is inserted into the slot, and the thickness of the slot matches the thickness of the substrate.

6. The LED vehicle light according to claim 5, characterized in that: The lower end of the inner sidewall of the slot is connected to a second inclined inner wall, which is inclined to the plane containing the length and width of the substrate.

7. The LED vehicle light according to any one of claims 1 to 6, characterized in that: The number of the first raised stripes is multiple, and the multiple first raised stripes are arranged along the width direction of the substrate; The number of the second raised stripes is multiple, and the multiple second raised stripes are arranged along the thickness direction of the substrate.

8. The LED vehicle light according to any one of claims 1 to 6, characterized in that: The lower end of the light-transmitting element is connected to a housing, and the second end of the LED chip group, which is away from the substrate, is inserted into the housing. A contact pin is provided at the end of the substrate away from the LED chip group. The contact pin is provided on both sides of the substrate in the thickness direction. A notch is provided on the housing, and the contact pin protrudes from the notch inside the housing.

9. The LED vehicle light according to claim 8, characterized in that: The light-transmitting component is provided with a snap-fit ​​mounting hole, which is located below the light-transmitting window; The housing is provided with a snap-fit ​​protrusion, which can be detachably installed in the snap-fit ​​mounting hole.

10. The LED vehicle light according to claim 9, characterized in that: The end of the housing facing the light-transmitting element is provided with a first ultrasonic welding surface, and the end of the light-transmitting element facing the housing is provided with a second ultrasonic welding surface. When the housing is connected to the light-transmitting component, the first ultrasonic welding surface abuts against the second ultrasonic welding surface.

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