WO2021036159A1

WO2021036159A1 - Illumination assembly for use in forming low beam middle region light shape of vehicle lamp

Info

Publication number: WO2021036159A1
Application number: PCT/CN2020/070727
Authority: WO
Inventors: 李聪; 仇智平; 祝贺; 桑文慧
Original assignee: 华域视觉科技(上海)有限公司
Priority date: 2019-08-26
Filing date: 2020-01-07
Publication date: 2021-03-04
Also published as: CN210141549U

Abstract

An illumination assembly for use in forming a low beam middle region light shape (100) of a vehicle lamp. The illumination assembly comprises a light guide piece (1), a support piece (2) and a lens (3). Two sides of the light guide piece (1) are provided with positioning parts (11); the support piece (2) is provided with a clamping groove (21) and limiting parts (22) that are located on two sides of the clamping groove (21); the light guide piece (1) is clamped into the clamping groove (21); the positioning parts (11) abut against corresponding limiting parts (22); the clamping groove (21) and the limiting parts (22) are configured to limit the light guide piece (1); the lens (3) is provided with a connection part (31) and a light exit part (32); two sides of the connection part (31) are provided with limiting grooves (311); the positioning parts (11) and the limiting parts (22) are correspondingly clamped in the limiting grooves (311); and the limiting grooves (311) are configured to limit the light guide piece (1).

Description

Illumination assembly for forming light shape of low beam middle area of vehicle lamp

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office with an application number of 201921393104.8 on August 26, 2019. The entire content of this application is incorporated into this application by reference.

Technical field

The present application relates to the technical field of vehicle lighting, for example, to a lighting assembly used to form the light shape of the middle area of the low beam of a vehicle lamp.

Background technique

Automotive lighting components generally include lens, lens holder, light guide, circuit board and radiator. When installing, first position and install the light guide and radiator, and then position and install the lens and lens holder with the radiator. Or it can be positioned and installed with the radiator via a transition bracket. As shown in FIG. 1, the low-beam light shape of a vehicle lamp includes a low-beam middle area light shape 100 located in the central area of the light shape and a low-beam widening area light shape 200 located in the light shape widening area, and the two are partially superimposed. The light shape 100 of the low beam center area mainly corresponds to the lighting of the own lane and the lanes on both sides, and mainly affects the visibility of the driver's driver in the far distance of the low beam irradiation area, and the low beam widened area light shape 200 mainly affects the vehicle illumination range.

Related car lamp lighting components have the following problems: In the car lamp lighting components, there are multiple assembly errors between the light guide and the lens, the positioning and installation steps are cumbersome, and the positioning and installation accuracy is difficult to guarantee, resulting in the relative position of the light guide and the lens. The accuracy is low; the two sides of the low-beam cut-off line of the low-beam central area light shape 100 formed by the related vehicle lamp lighting components are tilted upward as shown in FIG. 9, which affects the road lighting effect.

Summary of the invention

The present application provides a lighting assembly for forming the light shape of the middle area of the low beam of the vehicle lamp, which can ensure the positioning and installation accuracy of the light guide and the lens.

A lighting assembly used to form the light shape of the middle area of the low beam of a car lamp, comprising:

A light guide, positioning parts are provided on both sides of the light guide;

A supporting member, the supporting member is provided with a card slot and a limiting portion located on both sides of the card slot, the light guide member is locked into the card slot, and the positioning portion is attached to the corresponding limiting portion By the way, the card slot and the limiting portion are configured to limit the light guide;

The lens includes a connecting portion and a light-emitting portion, a limiting groove is provided on both sides of the connecting portion, the positioning portion and the limiting portion are respectively locked into the limiting groove, and the limiting groove is configured In order to limit the position of the light guide, the light incident on the light guide is emitted through the light exit portion.

A plurality of light-condensing cup structures are provided on the side of the light guide member away from the light-emitting portion.

An arc-shaped light-emitting surface is provided on a side of the light guide member close to the light-emitting portion, and the arc-shaped light-emitting surface is concave in a direction away from the light-emitting portion.

The intersection line between the bottom surface of the light guide and the arc-shaped light-emitting surface is a low-beam cut-off structure, and the low-beam cut-off structure is bent to a side away from the light guide to form an arc-shaped protrusion.

A cut-off groove is provided in the middle of the low-beam cut-off structure.

It also includes a circuit board, and a mounting portion is further provided on the side of the support away from the light-emitting portion, one side of the mounting portion abuts and connects with the circuit board, and the other side abuts and connects with the connecting portion .

It also includes a fastener, which sequentially penetrates the circuit board and the mounting part, and is connected to the connecting part.

It also includes a fastener and a radiator, the radiator is arranged on the other side of the circuit board, and the fastener penetrates the radiator, the circuit board and the mounting part in sequence, and is connected to the部连接。 Department connection.

The heat sink is in an inverted L shape, a plurality of heat sinks are provided on the top surface of the heat sink, and the heat sinks are configured to be located above the light guide.

The connecting portion and the card slot form an accommodating cavity, and the light guide is located in the accommodating cavity.

The connecting part and the light emitting part are an integral structure.

The top inner wall of the limiting groove is in contact or interference fit with the upper surface of the positioning portion, and the bottom inner wall of the limiting groove is in contact or interference fit with the lower surface of the limiting portion.

The lighting module provided in the present application for forming the light shape of the middle area of the low beam of the vehicle lamp, during installation, the light guide is limited in the left and right directions by snapping the light guide into the slot of the support, By abutting the positioning part of the light guide with the limiting part of the support, the light guide is limited in the front and rear direction. By setting the limiting groove on the connecting part of the lens, the positioning part of the light guide and the support The limit parts of the parts are all locked into the limit grooves of the connecting part of the lens, and the light guide part is restricted in the up and down direction. So far, the relative installation position of the light guide part and the lens is uniquely determined, which can ensure that the light guide part and the lens The relative installation position accuracy of the lens. The lighting module provided in the application for forming the light shape of the middle area of the low beam of the vehicle lamp has convenient installation and simple steps, can ensure the relative installation position accuracy of the light guide and the lens, reduce multiple assembly errors, and improve the entire vehicle The accuracy of the lamp optical system.

Description of the drawings

Figure 1 is a schematic diagram of the low beam shape of a car lamp in the related art;

2 is a schematic structural diagram of a lighting assembly for forming the light shape of the middle area of the low beam of a vehicle lamp according to a specific embodiment of the present application;

Fig. 3 is a schematic diagram of the structure of Fig. 2 with the lens hidden;

Figure 4 is a schematic diagram of the structure of Figure 2 with the support and the radiator hidden;

FIG. 5 is an assembly schematic diagram of a lighting assembly used to form the light shape of the middle area of the low beam of a vehicle lamp according to a specific embodiment of the present application;

Fig. 6 is a first axonometric view of a light guide provided by a specific embodiment of the present application;

FIG. 7 is a second axonometric view of the light guide provided by the specific embodiment of the present application;

Fig. 8 is a side view of a light guide provided by a specific embodiment of the present application;

FIG. 9 is a schematic diagram of the light shape with upturned light shape boundaries on both sides of the low beam cut-off line in the related art;

FIG. 10 is a schematic diagram of a light shape with flat light shape boundaries on both sides of a low beam cut-off line provided by the specific embodiment of the present application.

In the picture:

100-Light shape in the middle area of the low beam; 200-Light shape in the widened area of the low beam;

1- light guide; 2- support; 3- lens; 4- circuit board; 5- fastener; 6-heat sink;

11-Positioning part; 12-Condenser cup structure; 13-Curved light-emitting surface; 14-Low beam cut-off structure; 15-Cut-off groove;

21- card slot; 22- limit part; 23- installation part;

31-connecting part; 311-limiting groove; 312-threaded connecting hole; 32-light emitting part;

61-The heat sink.

detailed description

In order to make the technical problems solved by the present application, the technical solutions adopted, and the technical effects achieved more clear, the technical solutions of the embodiments of the present application will be described in further detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the present application. Some embodiments, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of this application.

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the pointed device or element must have a specific orientation or a specific orientation. The structure and operation cannot therefore be understood as a limitation of this application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

In the description of this application, it should be noted that the terms "installation", "connection", and "connection" should be understood in a broad sense, unless otherwise clearly specified and limited. For example, it can be a fixed connection or a detachable connection. Connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in this application can be understood under specific circumstances.

This embodiment provides a lighting assembly for forming the light shape of the middle area of the low beam of a car lamp, as shown in FIGS. 2 to 5, the lighting assembly for forming the light shape of the middle area of the low beam of a car lamp includes a light guide 1 , Support 2 and lens 3. The light guide 1 is provided with positioning portions 11 on both sides; the support 2 is provided with a card slot 21 and a limiting portion 22 located on both sides of the card slot 21, the light guide 1 is locked into the card slot 21, and the positioning portion 11 corresponds to The limiting portion 22 is pressed against, the slot 21 and the limiting portion 22 are configured to limit the light guide 1; the lens 3 includes a connecting portion 31 and a light emitting portion 32, and limiting slots 311 are provided on both sides of the connecting portion 31 , The positioning portion 11 and the limiting portion 22 are correspondingly locked into the limiting slot 311, and the limiting slot 311 is configured to limit the light guide 1. The light guide 1 is used to guide the light of the light source that enters the light guide to the lens 3, and the light is refracted through the lens 3 to form a vehicle light shape.

Specifically, as shown in FIGS. 2 and 3, positioning portions 11 are provided on both sides of the light guide 1, and the positioning portions 11 extend along the left-right direction of the light guide 1. The support 2 is provided with a card slot 21 and a limiting portion 22. The light guide 1 is locked into the card slot 21. The card slot 21 is configured to limit the light guide 1 in the left-right direction, and the positioning portion 11 is connected to the limiting portion. The portion 22 abuts, and the limiting portion 22 is configured to limit the light guide 1 in the front-to-rear direction. The lens 3 is provided with a connecting portion 31, and a limiting slot 311 is provided on both sides of the connecting portion 31. The positioning portion 11 and the limiting portion 22 are both locked into the limiting slot 311, and the limiting slot 311 is configured to carry out the light guide 1 Limit in the up and down direction. In order to facilitate the installation of the light guide 1, optionally, the connecting portion 31 and the card slot 21 form an accommodating cavity, and the light guide 1 is located in the accommodating cavity.

It should be noted that the left and right directions, the front and back directions, and the up and down directions here all refer to the left and right directions, the front and back directions, and the up and down directions in the normal use state of the lighting assembly as shown in FIG. 2.

The lens 3 further includes a light emitting portion 32, and the light is refracted through the light emitting portion 32 to form a vehicle light shape. In order to reduce one-time assembly errors, the connecting portion 31 and the light emitting portion 32 are integrated. The limiting groove 311 is opened at one end away from the light emitting portion 32, so that the positioning portion 11 and the limiting portion 22 can be locked into the limiting slot 311 through the opening; the top inner wall of the limiting slot 311 is in contact with the upper surface of the positioning portion 11 Or an interference fit, the bottom inner wall of the limiting groove 311 is in contact with the lower surface of the limiting portion 22 or an interference fit.

During installation, by snapping the light guide 1 into the slot 21 of the support 2, the light guide 1 is limited in the left-right direction; by limiting the positioning portion 11 of the light guide 1 and the support 2 The position part 22 is abutted to limit the light guide 1 in the front and back direction; by setting the limit slot 311 on the connecting part 31 of the lens 3, the positioning part 11 of the light guide 1 and the limit part of the support 2 22 are all locked into the limiting groove 311 of the connecting portion 31 of the lens 3 to limit the light guide 1 in the vertical direction. So far, the relative installation position of the light guide 1 and the lens 3 is uniquely determined, and the accuracy of the relative installation position of the light guide 1 and the lens 3 can be ensured.

As shown in FIGS. 6-8, optionally, a plurality of light-condensing cup structures 12 are provided on the side of the light guide 1 away from the light-emitting portion 32. Compared with the related art using a reflecting mirror, the light guide 1 of this embodiment is provided with a condenser cup structure 12, which has higher optical efficiency and can further reduce the vertical height of the lens 3, so that the ratio of the vertical height to the left-right width of the lens 3 Less than or equal to 2/3. The lens 3 can be very small, such as a height of 5mm-15mm, a width of 15mm-35mm, and an optional height of 10mm and a width of 30mm. The focal length of the lens 3 can be 5mm-20mm, and can be selected as 10mm, which greatly reduces the volume of the entire lighting assembly, reduces the occupied space, and reduces the manufacturing cost.

Optionally, an arc-shaped light-emitting surface 13 is provided on the side of the light guide 1 close to the light-emitting portion 32, and the arc-shaped light-emitting surface 13 is concave in a direction away from the light-emitting portion 32 of the lens 3. By setting the arc-shaped light-emitting surface 13, the light guide 1 is adapted to the focal plane of the lens 3, the lens 3 can be imaged more clearly, and the light shape at the cut-off line can be sharper.

As shown in Figure 9, the lower boundary of the light-emitting surface of the existing lighting assembly is on the same horizontal plane, that is, the bottom surface of the light-emitting surface is a horizontal plane, and the upper boundary of the low-beam shape formed in the middle area, that is, the two cut-off lines of the low-beam will appear. The phenomenon of side upturning. In this embodiment, the low beam shape formed in the middle region is improved. Optionally, as shown in FIG. 8, the intersection line between the arc-shaped light-emitting surface 13 of the lighting assembly in the embodiment of the present application and the bottom surface of the light guide 1 is the low-beam cut-off structure 14, and the low-beam cut-off structure 14 is far away One side of the light guide 1 is curved to form an arc-shaped protrusion. That is to say, in this embodiment, the intersection line between the arc-shaped light-emitting surface 13 of the light guide 1 and the bottom surface of the light guide 1 is an arc line curved upward on both sides. The phenomenon that the two sides of the upper boundary of the light shape are upwardly tilted, so that the upper boundary of the low beam light shape in the middle area is relatively flat, and a better road lighting effect can be achieved, as shown in Fig. 10.

Optionally, a cut-off groove 15 is provided in the middle of the low-beam cut-off structure 14. In FIG. 7, the cut-off groove 15 extends from the arc-shaped light-emitting surface 13 to the end surface where the condensing cup structure 12 is provided. The length of the cut-off groove 15 is not limited in the present application, and the cut-off groove 15 is provided in the low-beam cut-off structure 14. The middle part of the arc-shaped light-emitting surface 13 can be extended to any position. The upper boundary of the low-beam shape in the middle region formed by this structure, that is, the low-beam cut-off line is a low-beam cut-off line recessed downward in the middle, which also meets the requirements of corresponding regulations and can meet the needs of different customer groups.

As shown in Figures 2 to 5, in order to provide a light source, optionally, the lighting assembly for forming the light shape of the middle area of the low beam of the car light further includes a circuit board 4, and the side of the support 2 away from the light emitting portion 32 is also provided with One side of the mounting portion 23 is abutted and connected to one side of the circuit board 4, and the other side of the mounting portion 23 is abutted and connected to the connecting portion 31. The circuit board 4 is provided with a light source and electrical components.

In order to facilitate installation, optionally, the lighting assembly for forming the light shape of the middle area of the low beam of the vehicle light further includes a fastener 5, which passes through the circuit board 4 and the mounting portion 23 in turn, and is connected to the connecting portion 31 . The fastener 5 can be selected as a screw, which is convenient to obtain materials and low in cost.

In order to facilitate heat dissipation, optionally, the lighting assembly for forming the light shape of the middle area of the low beam of the car light further includes a radiator 6. The radiator 6 is arranged on the other side of the circuit board 4 and is connected to the circuit board by a fastener 5 4Connect. During installation, after the light guide 1 is placed on the support 2 and clamped with the lens 3, it passes through the radiator 6, the circuit board 4 and the mounting part 23 of the support 2 through the fastener 5, and is connected to the mounting part 23 of the support 2 The threaded connecting hole 312 on the connecting portion 31 of the lens 3 is connected, which reduces multiple assembly errors and improves the accuracy of the optical system.

In order to improve the heat dissipation performance, optionally, the heat sink 6 is in an inverted L shape, a plurality of heat sinks 61 are arranged on the top surface of the heat sink 6, and the heat sinks 61 are located above the light guide 1 and the heat sink 6 is facing away from the light. One side of piece 1. Cooling fins 61 may also be provided at other positions of the heat sink 6. Since the heat propagates from bottom to top in the lamp, a large number of radiating fins 61 are arranged above the light guide 1 to facilitate heat dissipation. Therefore, most of the radiating fins 61 are arranged on the top surface of the radiator 6 to correspond to the light guide. The position of 1 is conducive to improving the heat dissipation performance.

The lighting assembly provided in this embodiment is used to form the light shape of the middle area of the low beam of the vehicle lamp. During installation, the light guide 1 is aligned in the left and right directions by snapping the light guide 1 into the slot 21 of the support 2. The limit, by abutting the positioning part 11 of the light guide 1 with the limit part 22 of the support 2, the light guide 1 is limited in the front and rear direction, and the limit is set on the connecting part 31 of the lens 3 The groove 311 allows the positioning portion 11 of the light guide 1 and the limiting portion 22 of the support 2 to be both locked into the limiting slot 311 of the connecting portion 31 of the lens 3, and the light guide 1 is limited in the up and down direction, So far, the relative installation position of the light guide 1 and the lens 3 is uniquely determined, and the accuracy of the relative installation position of the light guide 1 and the lens 3 can be ensured. After the light guide 1 and the lens 3 are clamped, they pass through the radiator 6, the circuit board 4 and the mounting portion 23 of the support 2 through the fastener 5, and are connected to the threaded connection hole provided on the connecting portion 31 of the lens 3 312 connection completes the assembly, reducing multiple assembly errors and improving the accuracy of the optical system.

The lighting assembly provided in this embodiment for forming the light shape of the middle area of the low beam of the vehicle lamp has convenient installation and simple steps, can ensure the relative installation position accuracy of the light guide 1 and the lens 3, reduce multiple assembly errors, and improve The accuracy of the entire headlight optical system. Most of the heat sink 61 is arranged above the optical element, which is beneficial to improve the heat dissipation performance. Since the light guide 1 adopts the condensing cup structure 12, the optical efficiency is higher, so that the size of the lens 3 can be reduced correspondingly, the volume of the entire lighting assembly is reduced, the occupied space is reduced, and the manufacturing cost is reduced. The low-beam cutoff structure 14 forms an arc-shaped protrusion downward, that is, the intersection curve between the arc-shaped light-emitting surface 13 of the light guide 1 and the bottom surface of the light guide 1 is an arc that curves upward on both sides. The phenomenon that both sides of the upper boundary of the low-beam shape in the middle area are suppressed upwards, makes the upper boundary of the low-beam shape in the middle area relatively flat, and can achieve a better road lighting effect.

Claims

A lighting assembly used to form the light shape of the middle area of the low beam of a car lamp, comprising:

A light guide (1), with positioning parts (11) provided on both sides of the light guide (1);

The support (2), the support (2) is provided with a card slot (21) and a limiting portion (22) located on both sides of the card slot (21), and the light guide (1) is locked into the place In the card slot (21), the positioning portion (11) abuts against the corresponding limit portion (22), and the card slot (21) and the limit portion (22) are configured to align with each other. The light guide (1) is limited;

The lens (3) includes a connecting portion (31) and a light-emitting portion (32). The connecting portion (31) is provided with a limiting groove (311) on both sides, the positioning portion (11) and the limiting portion ( 22) All are correspondingly locked into the limiting slot (311), and the limiting slot (311) is configured to limit the light guide (1);

Wherein, the light that enters the light guide (1) is emitted through the light exit portion (32).
The lighting assembly for forming the light shape of the middle area of the low beam of a vehicle lamp according to claim 1, wherein the light guide (1) is provided with a plurality of condensing cups on a side away from the light exit portion (32) Structure (12).
The lighting assembly for forming the light shape of the middle area of the low beam of the vehicle lamp according to claim 1, wherein the light guide (1) is provided with an arc-shaped light exit surface ( 13) The arc-shaped light-emitting surface (13) is concave in a direction away from the light-emitting portion (32).
The lighting assembly for forming the light shape of the middle area of the low beam of the vehicle light according to any one of claims 1 to 3, wherein the bottom surface of the light guide (1) and the arc-shaped light-emitting surface (13) are different from each other. The intersection line therebetween is a low-beam cut-off structure (14), and the low-beam cut-off structure (14) forms an arc-shaped protrusion on the side away from the light guide (1).
The lighting assembly for forming the light shape of the middle area of the low beam of a vehicle lamp according to claim 4, wherein the middle of the low beam cut-off structure (14) is provided with a cut-off groove (15).
The lighting assembly for forming the light shape of the middle area of the low beam of the vehicle lamp according to claim 1, further comprising: a circuit board (4), and a side of the supporting member (2) away from the light emitting portion (32) is also A mounting portion (23) is provided, one side of the mounting portion (23) is abutted and connected to one side of the circuit board (4), and the other side of the mounting portion (23) is connected to the connecting portion (31) Snap and connect.
The lighting assembly for forming the light shape of the middle area of the low beam of the vehicle light according to claim 6, further comprising: a fastener (5), the fastener (5) sequentially penetrates the circuit board (4) and The mounting part (23) is connected with the connecting part (31).
The lighting assembly for forming the light shape of the middle area of the low beam of the vehicle lamp according to claim 6, further comprising: a fastener (5) and a radiator (6), the radiator (6) is arranged in the circuit On the other side of the board (4), the fastener (5) sequentially penetrates the heat sink (6), the circuit board (4) and the mounting portion (23), and is connected to the connecting portion (31). )connection.
The lighting assembly for forming the light shape of the middle area of the low beam of the vehicle lamp according to claim 8, wherein the radiator (6) is in an inverted L shape, and the top surface of the radiator (6) is provided with A plurality of radiating fins (61), the radiating fins (61) are located above the light guide (2).
The lighting assembly for forming the light shape of the middle area of the low beam of the vehicle lamp according to any one of claims 1-9, wherein the connecting portion (31) and the slot (21) form a receiving cavity, so The light guide (1) is located in the accommodating cavity.
The lighting assembly for forming the light shape of the middle area of the low beam of a vehicle lamp according to any one of claims 1-9, wherein the connecting portion (31) and the light emitting portion (32) are an integral structure.
The lighting assembly for forming the light shape of the middle area of the low beam of the vehicle lamp according to any one of claims 1-9, wherein the inner wall of the top side of the limiting groove (311) and the positioning portion (11) The upper surface is in contact or interference fit, and the bottom inner wall of the limiting groove (311) is in contact or interference fit with the lower surface of the limiting portion (22).