WO2021036106A1 - Illumination assembly for use in forming low beam widened region light shape of vehicle lamp - Google Patents

Abstract

An illumination assembly for use in forming a low beam widened region light shape (200) of a vehicle lamp, the assembly comprising a support piece (1), a light guide piece (2) and a lens (3). The light guide piece (2) is clamped on the support piece (1). The lens (3) comprises a connection part (31) and a light exit part (32). The support piece (1) and the light guide piece (2) are clamped on the connection part (31). The light exit part (32) is provided with a first arc-shaped light-emitting surface (321) that is inwardly recessed toward the direction nearing the light guide piece (2), and the transverse cross-sectional line of the first arc-shaped light-emitting surface (321) is an arc that is inwardly recessed at two sides toward the middle.

Description

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

This application is required to be submitted to the Chinese Patent Office on August 26, 2019, and the application number is 201921394156.7 The priority of the Chinese patent application, the entire content of the 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 for forming the light shape of a low beam widening area 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 assembly errors between the light guide and the lens due to multiple assembly during assembly, the positioning and installation steps are cumbersome, and the positioning and installation accuracy is difficult to guarantee, resulting in the light guide. The relative position accuracy of the lens and the lens is low; the two sides of the upper boundary of the light shape 200 of the low-beam widening area formed by the related vehicle lamp lighting assembly will tilt upwards 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 low beam widening area of a vehicle lamp, which can avoid the phenomenon that the upper boundary of the light shape of the low beam widening area is tilted upward on both sides.

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

supporting item;

The light guide member is clamped on the support member;

The lens includes a connecting portion and a light emitting portion, the support member and the light guide member are both clamped on the connecting portion, and the light emitting portion is provided with a first arc that is concave in a direction close to the light guide member A light-emitting surface is formed, and the transverse section of the first arc-shaped light-emitting surface is a concave arc from both sides to the middle.

Positioning portions are provided on both sides of the light guide member, the support 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 The portion abuts against the corresponding limiting portion, and the card slot and the limiting portion are configured to limit the light guide.

Limiting slots are provided on both sides of the connecting portion, the positioning portion and the limiting portion are both locked into the limiting slot, and the limiting slot is configured to limit the light guide.

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

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

It also includes a circuit board, a mounting portion is further provided on the side of the support away from the light-emitting portion, one surface of the mounting portion is connected to one surface of the circuit board, and the other surface of the mounting portion is connected to the connecting portion connection.

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 heat sink, the heat sink is arranged on the other side of the circuit board, and the fastener penetrates the heat sink, the circuit board and the mounting part in sequence, and is connected to the connecting part. 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 sink is configured to be located above the light guide.

The connecting portion and the support member are surrounded to form an accommodating cavity, and the light guide member is located in the accommodating cavity.

The connecting portion and the light emitting portion 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 first arc-shaped light-emitting surface is a convex surface that protrudes in a direction away from the light guide, that is, the longitudinal section of the first arc-shaped light-emitting surface is an arc that protrudes from both sides to the middle.

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 a light shape of a low beam widening area of a vehicle lamp according to an embodiment of the present application;

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

4 is a schematic diagram of assembling a light guide and a lens provided by an embodiment of the present application;

FIG. 5 is an assembly schematic diagram of a lighting assembly for forming a light shape of a low beam widening area of a vehicle lamp according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a lens provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of the structure of a light emitting unit provided by an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a light guide provided by an 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 an 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-support; 2-light guide; 3-lens; 4-circuit board; 5-fastener; 6-heat sink;

11-card slot; 12-limiting part; 13-installation part;

21-Positioning part; 22-Condenser cup structure; 23-Second arc-shaped light-emitting surface;

31-connecting part; 311-limiting groove; 312-threaded connecting hole; 32-light emitting part; 321-first curved light emitting surface;

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.

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 low beam widening area of a car light, as shown in FIGS. 2 to 5, the lighting assembly for forming the light shape of the low beam widening area of a car light includes a supporting member 1, Light guide 2 and lens 3. The light guide 2 is clamped on the support 1. The lens 3 includes a connecting portion 31 and a light emitting portion 32. The supporting member 1 and the light guide member 2 are both clamped on the connecting portion 31. The light-emitting portion 32 is provided with a first arc-shaped light-emitting surface 321 that is recessed toward the direction close to the light guide 2. The transverse section of the first arc-shaped light-emitting surface 321 is concave toward the middle from both sides, and the concave direction is closer to the guide. The arc of the direction of the light element 2.

The light guide 2 is used to guide the light of the light source to the lens 3, and the light is refracted through the lens 3 to form a vehicle light shape.

The transverse section line in the text is defined as the section line between a plane parallel to the horizontal plane and the first arc-shaped light-emitting surface 321, and the longitudinal section line in the text is defined as a plane perpendicular to the horizontal plane and the first arc. The section line where the light-emitting surface 321 intersects.

The lens 3 includes a connecting portion 31 and a light emitting portion 32. The connecting portion 31 and the light emitting portion 32 are an integral structure. The light guide 2 is clamped on the support 1, and then the support 1 and the light guide 2 are both clamped on On the connecting portion 31 of the lens 3, the number of assembly times is reduced, the installation is convenient, and the relative installation position accuracy of the light guide 2 and the lens 3 is ensured, thereby reducing errors caused by multiple assembly, and improving the entire vehicle light optics The accuracy of the system.

Positioning portions 21 are provided on both sides of the light guide 2, and the positioning portions 21 extend along the left and right directions of the light guide 2; the support 1 is provided with a slot 11 and a limiting portion 12, and the light guide 2 is locked into the slot 11 , The card slot 11 is configured to limit the light guide 2 in the left and right direction, the positioning portion 21 abuts the corresponding limit portion 12, and the limit portion 12 is configured to limit the light guide 2 in the front and rear direction Limit. The connecting portion 31 and the supporting member 1 are surrounded to form an accommodating cavity, and the light guide member 2 is located in the accommodating cavity. The connecting portion 31 and the slot 11 of the supporting member 1 form an accommodating cavity, which is convenient for placing the light guide member 2. Limiting slots 311 are provided on both sides of the connecting portion 31, the positioning portion 21 and the limiting portion 12 are both locked into the limiting slot 311, and the limiting slot 311 is configured to limit the light guide 2 in the up and down direction.

It should be noted that the above-mentioned left and right directions, front and rear directions, and up and down directions, as shown in FIG. 2, refer to the left and right directions, front and back directions, and up and down directions in normal use of the lighting assembly used to form the light shape of the low beam widening area direction.

The limiting groove 311 is opened at one end away from the light emitting portion 32, so that the positioning portion 21 and the limiting portion 12 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 21 or In an interference fit, the bottom inner wall of the limiting groove 311 is in contact with the lower surface of the limiting portion 12 or an interference fit.

During installation, by snapping the light guide 2 into the slot 11 of the support 1, the light guide 2 is limited in the left-right direction; by limiting the positioning portion 21 of the light guide 2 and the support 1 The position part 12 is abutted to limit the light guide 2 in the front and back direction; by setting the limit groove 311 in the connecting part 31 of the lens 3, the positioning part 21 of the light guide 2 and the limit part of the support 1 12 are all locked into the limiting groove 311 of the connecting portion 31 of the lens 3 to limit the light guide 2 in the vertical direction. So far, the relative installation position of the light guide 2 and the lens 3 is uniquely determined, and the accuracy of the relative installation position of the light guide 2 and the lens 3 can be ensured.

In order to provide a light source, the lighting assembly for forming the light shape of the low beam widening area of the car light may further include a circuit board 4, and a mounting portion 13 is further provided on the side of the support 1 away from the light emitting portion 32. One side of the mounting portion 13 and the circuit One side of the board 4 is connected, and the other side of the mounting portion 13 is connected to the connecting portion 31. The circuit board 4 is provided with a light source and electrical components. For ease of installation, the lighting assembly for forming the light shape of the low beam widening area of the vehicle light may further include a fastener 5, which penetrates the circuit board 4 and the mounting portion 13 in turn, and is connected to the connecting portion 31. The fastener 5 can be a screw, which is convenient to obtain materials and has low cost.

In order to facilitate heat dissipation, the lighting assembly used to form the light shape of the low beam widened area of the car light may also include a radiator 6. The radiator 6 is arranged on the other side of the circuit board 4, and the fastener 5 penetrates the radiator 6 and the circuit board in turn 4 and the mounting part 13, and connected with the connecting part 31.

During installation, after the light guide 2 and the lens 3 are clamped, they pass through the radiator 6, the circuit board 4 and the mounting portion 13 of the support 1 through the fastener 5, and are connected to the connecting portion 31 provided on the lens 3 The threaded connection hole 312 on the upper part is connected, which reduces multiple assembly errors and improves the accuracy of the optical system.

In order to improve the heat dissipation performance, the heat sink 6 may be in an inverted L shape, a plurality of heat sinks 61 are provided on the top surface of the heat sink 6, and the heat sinks 61 are arranged above the light guide 2. Of course, radiating fins 61 are also provided at other positions of the heat sink 6. Since the heat propagates from the bottom to the top in the vehicle lamp, a large number of radiating fins 61 above are beneficial to heat dissipation. Therefore, most of the radiating fins 61 are disposed above the optical element, which is beneficial to improve the heat dissipation performance.

As shown in FIGS. 5-7, the light-emitting portion 32 is provided with a first arc-shaped light-emitting surface 321 that is concave toward the direction close to the light guide 2, and the transverse section lines of the first arc-shaped light-emitting surface 321 are inward from both sides to the middle. The concave and concave direction is an arc toward the direction approaching the light guide 2. By providing a first arc-shaped light-emitting surface 321 that is concave in the direction close to the light guide 2 in the light-emitting portion 32, and the transverse section of the first arc-shaped light-emitting surface 321 is a concave arc from both sides to the middle, not only can When the size of the lens 3 is small, a large-angle widened illumination range is formed, and the light shape of the low-beam widened area can also be suppressed from the upward warping phenomenon on both sides of the upper boundary as shown in Fig. 9, and the upper side shown in Fig. 10 is obtained. The light shape of the low beam widened area with a relatively flat boundary, so as to achieve a better road lighting effect.

The first arc-shaped light-emitting surface 321 is a convex surface that protrudes in a direction away from the light guide 2, that is, the longitudinal section of the first arc-shaped light-emitting surface 321 is an arc that is convex from both sides to the middle. By arranging the first arc-shaped light-emitting surface 321 that is convex as a whole, the light can be converged in the up and down direction, and a more ideal light shape can be obtained.

As shown in FIG. 8, a plurality of light-concentrating cup structures 22 may be provided on the side of the light guide 2 away from the light-emitting portion 32. Compared with the related art using mirrors, the light guide 2 of this embodiment adopts the condenser cup structure 22, which has higher optical efficiency, and can further reduce the vertical height dimension 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. The light guide 2 is provided with a second arc-shaped light-emitting surface 23 on a side close to the light-emitting portion 32, and the second arc-shaped light-emitting surface 23 is concave in a direction away from the light-emitting portion 32. By setting the second arc-shaped light exit surface 23, the light guide 2 is adapted to the object focal surface of the lens 3, and the image of the lens 3 can be made clearer, and the light shape at the cut-off line can be sharper.

The lighting assembly provided in this embodiment is used to form the light shape of the low beam widening area of the vehicle light. During installation, the light guide 2 is clamped into the slot 11 of the support 1 to move the light guide 2 in the left and right directions. The limit, by abutting the positioning part 21 of the light guide 2 with the limit part 12 of the support 1, the light guide 2 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 enables the positioning portion 21 of the light guide 2 and the limiting portion 12 of the supporting member 1 to be locked into the limiting groove 311 of the connecting portion 31 of the lens 3 to limit the light guide 2 in the up and down direction, So far, the relative installation positions of the light guide 2 and the lens 3 are uniquely determined, which can ensure the accuracy of the relative installation positions of the light guide 2 and the lens 3; after the light guide 2 and the lens 3 are clamped, they pass through the fastener 5 in turn The heat sink 6, the circuit board 4, and the mounting portion 13 of the support 1 are connected to the threaded connection hole 312 provided on the connection portion 31 of the lens 3 to complete the assembly, reduce multiple assembly errors, and improve the accuracy of the optical system; By providing a first arc-shaped light-emitting surface 321 that is concave in the direction close to the light guide 2 in the light-emitting portion 32, and the transverse section of the first arc-shaped light-emitting surface 321 is a concave arc from both sides to the middle, not only can When the size of lens 3 is small, a large-angle widened illumination range can be formed, and the upward warping phenomenon on both sides of the upper boundary of the low-beam widening area can also be suppressed, and the light shape of the low-beam widening area with a relatively flat upper boundary can be obtained. Good road lighting effect; most of the heat sink 61 is arranged above the optical element, which is beneficial to improve the heat dissipation performance; because the light guide 2 adopts the condenser cup structure 22, the optical efficiency is higher, so that the size of the lens 3 can be reduced accordingly Therefore, the volume of the entire lighting assembly is reduced, the occupied space is reduced, and the manufacturing cost is reduced.

Claims (13)

A lighting assembly used to form the light shape of the low beam widening area of a car lamp, comprising: Support (1); The light guide (2) is clamped on the support (1); The lens (3) includes a connecting portion (31) and a light emitting portion (32). The supporting member (1) and the light guiding member (2) are both clamped on the connecting portion (31), and the light emitting portion The portion (32) is provided with a first arc-shaped light-emitting surface (321) that is concave in the direction close to the light guide (2), that is, the transverse section of the first arc-shaped light-emitting surface (321) is on both sides A concave arc toward the middle. The lighting assembly for forming the light shape of the low beam widening area of the vehicle lamp according to claim 1, wherein the two sides of the light guide (2) are provided with positioning portions (21), and the support (1) A card slot (11) and a limiting portion (12) located on both sides of the card slot (11) are provided; the light guide (2) is locked into the card slot (11), and the positioning portion ( 21) Abutting against the corresponding limiting portion (12), the card slot (11) and the limiting portion (12) are configured to limit the light guide (2). The lighting assembly for forming the light shape of the low beam widening area of the vehicle light according to claim 2, wherein a limit slot (311) is provided on both sides of the connecting portion (31), and the positioning portion (21) and The limiting parts (12) are all locked into the limiting slot (311), and the limiting slot (311) is configured to limit the light guide (2). The lighting assembly for forming the light shape of the low beam widening area of the vehicle light according to claim 1, 2 or 3, wherein the light guide (2) is provided with a light guide on a side far from the light exit portion (32). A condenser cup structure (22). The lighting assembly for forming the light shape of the low beam widening area of the vehicle light according to claim 1, 2 or 3, wherein a side of the light guide (2) close to the light exit portion (32) is provided with a Two arc-shaped light-emitting surfaces (23), the second arc-shaped light-emitting surface (23) is concave in a direction away from the light-emitting portion (32). The lighting assembly for forming the light shape of the low beam widening area of a vehicle lamp according to any one of claims 1 to 5, further comprising a circuit board (4), and the supporting member (1) is away from the light emitting portion (32) One side of the mounting portion (13) is also provided with a mounting portion (13), one side of the mounting portion (13) is connected to one side of the circuit board (4), and the other side of the mounting portion (13) is connected to the connecting portion (31). )connection. The lighting assembly for forming the light shape of the low beam widening area of the vehicle light according to claim 6, further comprising a fastener (5), the fastener (5) sequentially penetrates the circuit board (4) and the The mounting portion (13) is connected with the connecting portion (31). The lighting assembly for forming the light shape of the low beam widening area of the vehicle light according to claim 6, further comprising a fastener (5) and a radiator (6), the radiator (6) is arranged on the circuit board On the other side of (4), the fastener (5) sequentially penetrates the heat sink (6), the circuit board (4) and the mounting portion (13) and is connected to the connecting portion (31) . The lighting assembly for forming the light shape of the low beam widening area of a 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 configured to be located above the light guide (2). [Corrected according to Rule 91 17.02.2020]
The lighting assembly for forming the light shape of the low beam widening area of a vehicle lamp according to any one of claims 1 to 9, wherein the connecting portion (31) and the supporting member (1) are enclosed to form a accommodating cavity , The light guide (2) is located in the accommodating cavity. [Corrected according to Rule 91 17.02.2020]
The lighting assembly for forming the light shape of the low beam widening area of the vehicle lamp according to claim 3, wherein the top inner wall of the limiting groove (311) is in contact with or passes over the upper surface of the positioning portion (21). With an interference fit, the bottom inner wall of the limiting groove (311) is in contact with the lower surface of the limiting portion (12) or an interference fit. The lighting assembly for forming the light shape of the low beam widening area of the vehicle lamp according to claim 1, wherein the first arc-shaped light-emitting surface (321) is a convex surface that protrudes in a direction away from the light guide (2) , That is, the longitudinal section of the first arc-shaped light-emitting surface (321) is an arc that protrudes from both sides to the middle.
The lighting assembly for forming the light shape of the low beam widening area of a vehicle lamp according to claim 10, wherein the connecting portion (31) and the light emitting portion (32) are an integral structure.

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