A headlamp optical assembly, lighting device, headlamp, and vehicle

Abstract

The application relates to a vehicle lamp, and discloses a headlamp optical assembly which comprises a condensing element (1) and a lens support (2), wherein a cavity suitable for accommodating the condensing element (1) is formed on the lens support (2), a fitting structure suitable for mutual fitting is formed on the condensing element (1) and the condensing element (1) is fitted in the cavity through the fitting structure. The application further discloses an illuminating device containing the headlamp optical assembly, a headlamp and a vehicle containing the headlamp. The headlamp optical assembly of the application connects the condensing element (1) and the lens support (2) through the fitting structures capable of mutual fitting arranged on the condensing element (1) and the lens support (2), guarantees the installation precision between the two, and improves the optical efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to a vehicle lamp, in particular, to a headlamp optical assembly. Furthermore, the present application also relates to a lighting device comprising the headlamp optical assembly, a headlamp and a vehicle. BACKGROUND

[0002] In a lighting device in a vehicle headlamp, a Matrix matrix headlamp lighting device can subdivide a high beam lighting area into multiple lighting areas, realize a high beam adaptive function, shield a target object in front of the vehicle, avoid dazzling of other road users, and improve driving safety.

[0003] A primary optical element (such as a mirror, a condensing element) in the Matrix matrix headlamp lighting device is a core component of the Matrix matrix headlamp lighting device, which needs to accurately direct the outgoing light of a light source, generate an intermediate light distribution, and further modulate through a secondary optical element (such as a lens) to obtain a desired light distribution. Therefore, the manufacturing precision and assembly precision of the primary optical element and the secondary optical element are very high. However, in the existing Matrix matrix headlamp lighting device, the mounting connection relationship between the components is as follows: a support plate is fixedly connected to a heat sink provided with a circuit board through screws, a primary optical element is fixed on the support plate, a pressing plate cover is arranged above the primary optical element and fixedly connected with the support plate through screws to limit the primary optical element; a secondary optical element is mounted at the front end of a lens holder, and the rear end of the lens holder is fixedly connected with the heat sink. Because the number of installed parts is large, the accuracy of the relative positions between the primary optical element, the secondary optical element and the lens holder is affected by the multiple positioning and mounting connections between the support plate and the pressing plate, between the support plate and the heat sink, and between the lens holder and the heat sink, that is, there are multiple assembly errors between the three, resulting in insufficient accuracy of the relative positions between the optical elements.

[0004] Based on the above reasons, the prior art cannot effectively ensure the high accuracy of the relative positions between the optical elements. SUMMARY

[0005] The problem to be solved by the first aspect of the present application is to provide a headlamp optical assembly, which has a simple structure and high accuracy of the relative positions of the parts.

[0006] In addition, the problem to be solved by the second aspect of the present application is to provide a lighting device, which has a simple structure and high accuracy of the relative positions of the parts in the lighting device.

[0007] Further, the problem to be solved by the third aspect of the present application is to provide a headlamp, which has a simple structure and high accuracy of the relative positions of the parts in the headlamp.

[0008] Still further, the fourth aspect of the present application aims to provide a vehicle with a simple headlamp structure and high precision of relative positions of parts in the headlamp.

[0009] To solve the above technical problems, the first aspect of the present application provides a headlamp optical assembly, comprising a condensing element and a lens holder, wherein a cavity is formed on the lens holder to accommodate the condensing element, and a fitting structure is formed on the condensing element and the cavity to fit with each other, and the condensing element is fitted in the cavity through the fitting structure.

[0010] As a preferred embodiment, the fitting structure comprises a fitting portion provided on the inner circumferential wall of the cavity and a fitting groove provided on the front end of the condensing element.

[0011] Preferably, the condensing element and the lens holder are formed as an integral piece.

[0012] Preferably, the fitting portion is formed along the inner circumferential wall of the cavity, and a plurality of through holes are formed on the fitting portion.

[0013] More preferably, the fitting groove is a groove body suitable for the fitting portion to fit in, and a column body is integrally formed in the fitting groove to correspond to the through holes one by one.

[0014] Further preferably, the fitting groove is integrally formed around the light emitting portion of the condensing element.

[0015] As another preferred embodiment, the condensing element comprises a plurality of collimating units, each of which comprises a light inlet portion, a light guide portion and a light emitting portion, each of the light emitting portions is integrally formed as a light emitting portion of the condensing element, and a wedge-shaped gap is formed between each of the light guide portions, and the opening of the wedge-shaped gap gradually decreases along the light emitting direction.

[0016] More preferably, the longitudinal cross-sectional area of each of the light guide portions gradually decreases from front to back.

[0017] As yet another preferred embodiment, the longitudinal cross-sectional area of the lens holder decreases first and then increases from front to back, and the fitting portion is provided at the position where the longitudinal cross-sectional area is the smallest.

[0018] Typically, the lens holder is provided with a mounting portion, and the mounting portion is provided at the middle region of the lens holder.

[0019] As a specific structure, the upper portion of the lens holder is provided with at least one mounting portion, and the lower portion of the lens holder is provided with at least two mounting portions.

[0020] As another specific structural form, the mounting portion is formed as a forwardly open groove structure, a cylinder or a circular table is arranged in the groove structure, the cylinder or the circular table penetrates through the groove structure and is formed with a rearwardly open mounting through hole or blind hole.

[0021] In addition, the second aspect of the present application provides a lighting device, which comprises, from front to back, a secondary optical element, the headlamp optical assembly according to any one of the technical solutions of the first aspect, a positioning member for positioning the rear end of the headlamp optical assembly, a light source, a circuit board electrically connected to the light source, and a heat sink, wherein the secondary optical element is connected to the front end of the headlamp optical assembly, and the headlamp optical assembly, the positioning member, and the circuit board are fixedly connected to the heat sink.

[0022] As a specific embodiment, the positioning member is provided with a plurality of partition ribs, and a positioning opening is formed between any two adjacent partition ribs, and each positioning opening is arranged in one-to-one correspondence with the light source.

[0023] More specifically, the cross-sectional shape of the partition rib is rectangular or circular.

[0024] As another specific embodiment, a gap is formed between the rear end surface of the mounting portion and the heat sink.

[0025] Further specifically, the rear end of the lens holder is formed with a turned-up edge, and the rear side surface of the turned-up edge is adapted to abut against the circuit board; or the rear end of the lens holder is formed with a turned-up edge, and a boss is formed on the rear side surface of the turned-up edge, and the end surface of the boss is adapted to abut against the circuit board.

[0026] In addition, the third aspect of the present application provides a headlamp, which is the lighting device according to any one of the technical solutions of the second aspect.

[0027] Further, the fourth aspect of the present application also provides a vehicle comprising the headlamp according to the third aspect.

[0028] Through the above technical solutions, the headlamp optical assembly of the present application comprises a condensing element and a lens holder, wherein a cavity adapted to accommodate the condensing element is formed on the lens holder, a fitting structure adapted to be fitted with each other is formed in the cavity and on the condensing element, and the condensing element is fitted in the cavity through the fitting structure. The headlamp optical assembly of the present application can ensure the installation precision between the condensing element and the lens holder and improve the optical efficiency by arranging the fitting structures capable of being fitted with each other on the condensing element and the lens holder.

[0029] Other advantages of the present application and technical effects of the preferred embodiments will be further described in the specific embodiments below. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is one of the structural diagrams of one embodiment of the headlamp optical assembly of the present application;

[0031] Figure 2 is one of the structural diagrams of one embodiment of the headlamp optical assembly of the present application;

[0032] Figure 3 is a plan view of one embodiment of the headlamp optical assembly of the present application;

[0033] Figure 4 is an A-A sectional view of Figure 3

[0034] Figure 5 is a side view of one embodiment of the headlamp optical assembly of the present application;

[0035] Figure 6 is a B-B sectional view of Figure 5

[0036] Figure 7 is one of the structural diagrams of one embodiment of the lens holder of the present application;

[0037] Figure 8 is one of the structural diagrams of one embodiment of the light collecting element of the present application;

[0038] Figure 9 is one of the structural diagrams of one embodiment of the lighting device of the present application;

[0039] Figure 10 is a side view of one embodiment of the lighting device of the present application;

[0040] Figure 11 is a C-C sectional view of Figure 10

[0041] Figure 12 is a partial enlarged view of the D portion of Figure 11

[0042] Figure 13 is one of the structural diagrams of one embodiment of the positioning member, light source and circuit board mounting structure of the present application;

[0043] Figure 14 is one of the structural diagrams of one embodiment of the positioning member, light source and circuit board mounting structure of the present application;

[0044] Figure 15 is one of the structural diagrams of one embodiment of the positioning member of the present application;

[0045] Figure 16 is one of the structural diagrams of one embodiment of the lighting device of the present application;​​​​

[0046] Figure 17 Fig. 3 is a structural schematic diagram of a third embodiment of the lighting device of the present application;

[0047] Figure 18 Fig. 4 is a structural schematic diagram of a fourth embodiment of the lighting device of the present application.

[0048] BRIEF DESCRIPTION OF DRAWINGS

[0049] 1 condensing element 101 collimating unit

[0050] 1011 light inlet portion 1012 light guide portion

[0051] 1013 light outlet portion 1014 embedding groove

[0052] 1015 column 102 wedge-shaped gap

[0053] 2 lens holder 201 embedding portion

[0054] 2011 through hole 202 mounting portion

[0055] 203 flange 3 secondary optical element

[0056] 4 positioning member 401 positioning opening

[0057] 402 partition rib 403 mounting hole

[0058] 5 light source 6 circuit board

[0059] 7 heat sink 8 screw DETAILED DESCRIPTION

[0060] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to explain and illustrate the present application, and the scope of protection of the present application is not limited to the specific embodiments described below.

[0061] In the description of the present application, it should be explained that the terms "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of the simplified description of the present application. In the present application, the front and back refer to the optical path of the main transmission direction of the light after the light is converged by the condensing element 1. The end where the light is incident is the back end, and the end where the light is emitted is the front end, i.e. the end where the light source 5 is located is the back end, and the end where the secondary optical element 3 is located is the front end.

[0062] In the description of the present application, it is also necessary to explain that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be direct connection, or indirect connection through intermediate medium, it can be internal communication of two elements or interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0063] As shown in Figures 1 to 6 The present application provides a headlamp optical assembly, comprising a condensing element 1 and a lens holder 2, wherein a cavity adapted to accommodate the condensing element 1 is formed on the lens holder 2, and a fitting structure adapted to be fitted with each other is formed on the condensing element 1 and in the cavity, and the condensing element 1 is fitted in the cavity through the fitting structure.

[0064] In the existing headlamp optical assembly, the condensing element 1 and the lens holder 2 are important components of the headlamp optical assembly, and they are indirectly positioned, which will cause installation errors due to multiple positioning, and the installation precision between the condensing element 1 and the lens holder 2 will directly affect the light output effect of the headlamp, therefore, the fitting structure of the condensing element 1 and the lens holder 2 is formed on the condensing element 1 and the lens holder 2, so that the condensing element 1 and the lens holder 2 are directly connected and positioned, thereby reducing the positioning and installation errors and improving the installation precision between them.

[0065] The fitting of the condensing element 1 and the lens holder 2 of the present application can have two structural forms, and as one of the structural forms, the condensing element 1 and the lens holder 2 are preferably formed as an integral molded part, and through the fitting structure, the positioning precision between the condensing element 1 and the lens holder 2 is higher.

[0066] It is necessary to explain here that, since the condensing element 1 and the lens holder 2 are an integral molded part, the condensing element 1 and the lens holder 2 can be made of the same material or different materials. Preferably, the condensing element 1 and the lens holder 2 are made of different materials, the condensing element 1 is formed by a material (such as silica gel) with better heat resistance and optical performance, and the lens holder 2 is formed by a material (such as PC, PMMA or mixture thereof) with better rigidity, so as to better support the condensing element 1 and enhance its stability.

[0067] At the same time, the lens holder 2 and the condensing element 1 are integrally molded by insert molding process, and the molding process is as follows Figure 4 , Figure 6As shown: first, the lens holder 2 is formed by injection molding; then, the lens holder 2 is installed into the mold for injection molding of the light collecting element 1, and the integral molding of the lens holder 2 and the light collecting element 1 can be obtained after pouring the material. Of course, other molding processes and methods that can realize the integral structure can also be used between the lens holder 2 and the light collecting element 1, for example, two-color injection molding can also be used.

[0068] As shown in Figure 7 and Figure 8 As a preferred embodiment of the present application, the fitting structure includes a fitting part 201 provided on the inner circumferential wall of the cavity and a fitting groove 1014 provided at the front end of the light collecting element 1, and the fitting groove 1014 is integrally formed around the light emitting part of the light collecting element 1, thereby enabling the fitting structure to be arranged at the front end of the light collecting element 1 and effectively improving the rigidity of the light emitting part 1013.

[0069] As shown in Figure 7 The lens holder 2 is formed with a cavity for accommodating the light collecting element 1, and the cavity is through from front to back, and the fitting part 201 is formed on the inner side wall around the cavity, the fitting part 201 extends from the periphery to the center, and is formed around the inner circumferential wall of the cavity in a thin plate shape, and the fitting part 201 is formed with a plurality of through holes 2011 penetrating the fitting part 201.

[0070] As shown in Figure 8 The fitting groove 1014 is a groove body suitable for the fitting of the fitting part 201, and the fitting groove 1014 is integrally formed with a column 1015 capable of being fitted one by one into the through holes 2011.

[0071] And the fitting groove 1014 is integrally formed around the light emitting part of the light collecting element 1.

[0072] It can be seen that the fitting structure of the present application fits the fitting part 201 in the fitting groove 1014, and in order to make the fitting structure more firm and the fitting strength higher, the column 1015 and the through hole 2011 are also fitted together, and such fitting structure can firmly fit the light collecting element 1 and the lens holder 2 into one body. In addition, it should be noted that when the light collecting element 1 and the lens holder 2 are firmly fitted into one body, they are inseparable, Figure 7 and Figure 8 are shown as two parts, which is only to show the specific structure of the two.

[0073] As another structure of the fitting of the light collecting element 1 and the lens holder 2, the lens holder 2 is formed as a split structure, which can be in the form of being split up and down or in the form of being split left and right, at this time, the through hole 2011 on the fitting part 201 is replaced by a clamping groove with an opening, which can be clamped on the column 1015, this structure can ensure the installation precision of the light collecting element 1 and the lens holder 2 and is more convenient to install, when installing, the split lens holder 2 is closed, the clamping hole is clamped with the column 1015 to fit the light collecting element 1 and the lens holder 2; when disassembling, the split lens holder 2 is opened, and the light collecting element 1 and the lens holder 2 can be separated.

[0074] As shown in Figure 8 As another preferred embodiment of the present application, the light collecting element 1 comprises a plurality of collimating units 101, each of the collimating units 101 comprises an entrance part 1011, a light guide part 1012 and an exit part 1013, each of the exit parts 1013 is integrally formed as an exit part of the light collecting element 1, a wedge-shaped gap 102 is formed between each of the light guide parts 1012, the opening of the wedge-shaped gap 102 gradually decreases along the exit direction, and the longitudinal cross-sectional area of each of the light guide parts 1012 gradually decreases from front to back.

[0075] The collimating unit 101 is used to converge and collimate the incident light, each of the collimating units 101 comprises an entrance part 1011, a light guide part 1012 and an exit part 1013, the entrance part 1011 and the light guide part 1012 of each of the collimating units 101 are one-to-one corresponding, the exit parts 1013 of all the collimating units 101 are connected to each other to form the exit part of the light collecting element 1, that is, the light collecting element 1 has a plurality of entrance parts 1011 and light guide parts 1012, but only shares one exit part of the light collecting element 1. Moreover, the exit part of the light collecting element 1 is integrally formed in the cavity of the lens holder 2, the exit part of the light collecting element 1 is integrally formed with the lens holder 2, which can ensure the positional stability of the exit part, because the exit part of the light collecting element 1 is an important optical surface that affects the light shape effect, that is, the exit part of the light collecting element 1 may be deformed due to heat and stress during installation and use, which affects the light shape effect, therefore, the integral formation of the exit part of the light collecting element 1 with the lens holder 2 can reduce or even avoid the deformation of the exit part of the light collecting element 1, so that the light emission is more stable.

[0076] More preferably, the longitudinal cross-sectional area of the lens holder 2 decreases first and then increases from front to back, and the fitting part 201 is arranged at the position with the smallest longitudinal cross-sectional area.

[0077] The longitudinal section area of the lens holder 2 is designed in a shape that the section area decreases first and then increases from front to back, and the position with the minimum section area is the light emitting part of the light collecting element 1. This design reduces the space occupied by the lens holder 2, and more space can be provided for the heat sink 7. Compared with the prior art lens holder 2 with the section area gradually increasing from the front end to the back end, the lens holder 2 of the present application can make the structure after connecting the related parts more compact.

[0078] As another preferred embodiment of the present application, the lens holder 2 is provided with a mounting part 202, which is arranged in the middle region of the lens holder 2.

[0079] Further preferably, the upper part of the lens holder 2 is provided with at least one mounting part 202, and the lower part of the lens holder 2 is provided with at least two mounting parts 202. In this way, the three mounting parts 202 can form a triangular mounting structure in a plane, so that the mounting points of the lens holder 2 and the heat sink 7 are more stable.

[0080] It should be noted here that, as shown in Figure 17 The middle part of the lens holder 2 is provided with a mounting part 202 fixedly connected with the heat sink 7, so that the mounting part 202 is closer to the center of gravity of the headlamp optical assembly and the lens, greatly improving the vibration stability of the lighting device. The middle region is located in the middle region of the front and back length of the lens holder 2, i.e. in the 1 / 4 region forward and backward from the midpoint of the lens holder 2.

[0081] Further, the mounting part 202 is formed in a groove structure with an opening facing forward, and a cylinder or a circular truncated cone is arranged in the groove structure. The cylinder or the circular truncated cone passes through the groove structure and forms a mounting through hole or a blind hole with an opening facing backward. The groove structure can effectively improve the strength of the mounting part 202 without increasing the thickness of the mounting part 202 as much as possible, and the cylinder or the circular truncated cone arranged in the groove structure can improve the mounting strength of the lens holder 2 and the heat sink 7, and when the gap between the mounting part 202 and the heat sink 7 is out of tolerance, the rear end face of the cylinder or the circular truncated cone can be adjusted, and the adjustment amount is small. Of course, the structure arranged in the groove structure is not limited to the cylinder or the circular truncated cone, but can also be a cuboid or other structure, which will not affect the mounting of the mounting part 202 and the heat sink 7.

[0082] In addition, a second aspect of the present invention provides a lighting device comprising, from front to back, a secondary optical element 3, a headlight optical assembly according to any one of the above technical solutions, a positioning member 4 for positioning the rear end of the headlight optical assembly, a light source 5, a circuit board 6 electrically connected to the light source 5, and a heat sink 7, wherein the secondary optical element 3 is connected to the front end of the headlight optical assembly, and the headlight optical assembly, the positioning member 4, and the circuit board 6 are fixedly connected to the heat sink 7.

[0083] It should be noted that the secondary optical element 3 of the present invention is preferably a lens, which is connected to the front end of the lens holder 2. The connection method can be laser welding, adhesive bonding or snap-fit ​​connection, or other suitable connection methods.

[0084] like Figure 15 As shown, as a specific structural form of the present invention, the positioning member 4 is provided with a plurality of partition ribs 402, and a positioning port 401 is formed between two adjacent partition ribs 402. Each positioning port 401 is provided in a one-to-one correspondence with the light source 5.

[0085] In the above technical solution, a wedge-shaped gap 102 is formed between the multiple collimation units 101 of the focusing element 1. In order to ensure the accuracy of the relative position of the light-incident part 1011 of the multiple collimation units 101 and the light source 5 on the circuit board 6, the lighting device of the present invention is also provided with a positioning member 4 for positioning each light-incident part 1011. The positioning member 4 is provided with a plurality of partitions 402. The positioning port 401 between two adjacent partitions 402 is formed for the collimation unit 101 to pass through and be positioned. The positioning port 401 corresponds one-to-one with the light source 5 provided on the circuit board 6. The multiple collimation units 101 can be arranged in one row or in multiple rows. Correspondingly, the positioning port 401 can be arranged in one row or in multiple rows. The light-incident part 1011 of each collimation unit 101 can be inserted into the corresponding positioning port 401 and positioned. Thus, the light-emitting part 1013 and the light-incident part 1011 of the focusing element 1 are both positioned. The front end of the focusing element 1 is directly positioned with the secondary optical element 3, and the rear end is positioned with the light source 5 through the positioning member 4. This can effectively improve the positioning accuracy of the focusing element 1 and improve the light output effect.

[0086] Specifically, from Figures 9 to 12As can be seen, the rib 402 is shaped like a partition, and the transverse cross-sectional width of the positioning port 401 gradually narrows from front to back. The transverse cross-sectional width of the collimating unit 101 also gradually narrows from front to back, but the narrowing degree of the positioning port 401 is greater than that of the collimating unit 101. This minimizes the contact area between the collimating unit 101 and the rib 402. On the one hand, this facilitates guidance during insertion; on the other hand, a small contact area ensures positioning accuracy. Therefore, more specifically, the contact between the collimating unit 101 and the rib 402 is a line contact. It can also be seen that the rib 402 can be a cylinder, that is, the cross-sectional shape of the rib 402 can be rectangular or circular, forming a line contact with the collimating unit 101.

[0087] like Figure 13 and Figure 14 The mounting structure of the positioning component 4 shown is fixed to the heat sink 7 by two screws 8 and the circuit board 6.

[0088] As another specific structural form of the present invention, a gap is formed between the rear end face of the mounting part 202 and the heat sink 7.

[0089] from Figure 18 As can be seen, the mounting part 202 and the heat sink 7 are fixedly connected by fasteners (such as screws, bolts, etc.). When the fasteners are tightened, the lens bracket 2 is subjected to force, causing the rear end face of the lens bracket 2 to be pressed tightly against the circuit board 6, ensuring the reliability of the relative position between the focusing element 1 and the light source 5. At the same time, in order to prevent over-positioning in the front-rear direction between the lens bracket 2 and the heat sink 7, a corresponding gap should be left between the mounting part 202 and the heat sink 7 to avoid improper installation of the lens bracket 2 and the heat sink 7 due to manufacturing errors.

[0090] As another specific structural form of the present invention, the rear end of the lens bracket 2 is formed with a flange 203, and the rear side of the flange 203 is adapted to abut against the circuit board 6.

[0091] As an optional structural form of the above specific structure, the rear end of the lens bracket 2 is formed with a flange 203, and a boss is formed on the rear side of the flange 203. The end face of the boss is adapted to abut against the circuit board 6.

[0092] Furthermore, a third aspect of the present invention also provides a headlight, including a lighting device according to any one of the above-described technical solutions.

[0093] Furthermore, a fourth aspect of the present invention provides a vehicle including a headlight as described in the above-described technical solution.

[0094] As can be seen from the above description, the headlamp optical assembly of the present application comprises a condensing element 1 and a lens holder 2, wherein the lens holder 2 is formed with a cavity adapted to accommodate the condensing element 1, and the condensing element 1 is fitted in the cavity through a fitting structure formed on the condensing element 1 and adapted to be fitted with the fitting structure formed on the lens holder 2. The headlamp optical assembly of the present application can effectively improve the positioning accuracy between the condensing element 1 and the lens holder 2, ensure good light distribution performance, improve optical efficiency, and obtain ideal illumination light shape, by providing the fitting structure capable of being fitted with each other on the condensing element 1 and the lens holder 2.

[0095] In addition, the condensing element 1 and the lens holder 2 are preferably integrally formed, and are fitted with each other through the fitting structure provided thereon, which can reduce the installation error between the condensing element 1 and the lens holder 2, thereby improving the installation accuracy between the condensing element 1 and the lens holder 2 and ensuring the light emission effect.

[0096] The preferred embodiments of the present application are described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details in the above-described embodiments, and various simple modifications can be made to the technical solutions of the present application within the technical concept of the present application, and these simple modifications all belong to the protection scope of the present application.

[0097] In addition, it should be noted that each specific technical feature described in the above-described specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the present application will not further describe various possible combination manners.

[0098] In addition, various different embodiments of the present application can also be combined in any manner, as long as it does not deviate from the technical concept of the present application, and it should be considered as the disclosed content of the present application.

Claims

1. An illumination device, characterized by The front-to-back order includes a secondary optical element (3), a headlamp optical assembly, a positioning member (4) for positioning the rear end of the headlamp optical assembly, a light source (5), a circuit board (6) electrically connected with the light source (5), and a heat sink (7), the headlamp optical assembly includes a light collecting element (1) and a lens holder (2), wherein the light collecting element (1) includes a plurality of collimating units (101), the light source (5) is correspondingly arranged with each collimating unit (101), the lens holder (2) is formed with a cavity suitable for accommodating the light collecting element (1) through the front and rear, the cavity is formed with a fitting structure suitable for fitting each other with the light collecting element (1), the fitting structure includes an embedding part (201) arranged on the inner circumferential wall of the cavity and a fitting groove (1014) arranged at the front end of the light collecting element (1), the light collecting element (1) is fitted in the cavity through the fitting structure, the embedding part (201) extends from the periphery to the center and is in the form of a thin plate; the secondary optical element (3) is connected to the front end of the lens holder (2), and the light collecting element (1) and the lens holder (2) are formed as an integral part, the secondary optical element (3) and the light collecting element (1) are connected only through the lens holder (2), the secondary optical element (3) is connected to the front end of the headlamp optical assembly, the headlamp optical assembly, the positioning member (4) and the circuit board (6) are fixedly connected to the heat sink (7).

2. The illumination device of claim 1, wherein A plurality of partition ribs (402) are arranged on the positioning member (4), and a positioning opening (401) is formed between adjacent two partition ribs (402), each positioning opening (401) is correspondingly arranged with the light source (5).

3. The illumination device of claim 2, wherein, The cross-sectional shape of the partition rib (402) is rectangular or circular.

4. The lighting device according to any one of claims 1-3, characterized in that, An installation part (202) is arranged on the lens holder (2), and the installation part (202) is arranged at the middle region of the lens holder (2); or At least one installation part (202) is arranged on the upper part of the lens holder (2), and at least two installation parts (202) are arranged on the lower part of the lens holder (2); wherein, A gap is formed between the rear end face of the installation part (202) and the heat sink (7).

5. The lighting device according to any one of claims 1-3, characterized in that, A turned edge (203) is formed at the rear end of the lens holder (2), and the rear side surface of the turned edge (203) is suitable for abutting against the circuit board (6); or A turned edge (203) is formed at the rear end of the lens holder (2), and a boss is formed on the rear side surface of the turned edge (203), and the end face of the boss is suitable for abutting against the circuit board (6).

6. The illumination device of claim 1, wherein, The embedding part (201) is formed around the inner circumferential wall of the cavity, and a plurality of through holes (2011) are formed in the embedding part (201).

7. The illumination device of claim 6, wherein, The fitting groove (1014) is a groove suitable for embedding the embedding part (201), and a column (1015) capable of being embedded in the through hole (2011) is integrally formed in the fitting groove (1014).

8. The illumination device of claim 7, wherein, The groove (1014) is integrally formed around the light exit portion of the light collecting element (1).

9. The illumination device of claim 1, wherein, Each of the collimating units (101) comprises a light entrance portion (1011), a light guide portion (1012) and a light exit portion (1013), each of the light exit portions (1013) is integrally formed as the light exit portion of the light collecting element (1), and wedge-shaped gaps (102) are formed between each of the light guide portions (1012), the openings of the wedge-shaped gaps (102) gradually decrease along the light exit direction.

10. The illumination device of claim 9, wherein, The longitudinal cross-sectional area of each of the light guide portions (1012) gradually decreases from front to back.

11. The lighting device according to any one of claims 6-10, characterized in that The longitudinal cross-sectional area of the lens holder (2) decreases first and then increases from front to back, and the embedding portion (201) is arranged at the position where the longitudinal cross-sectional area of the lens holder (2) is the smallest.

12. The illumination device of claim 11, wherein, The lens holder (2) is provided with a mounting portion (202), which is arranged at the middle region of the lens holder (2).

13. The illumination device of claim 11, wherein, The upper portion of the lens holder (2) is provided with at least one mounting portion (202), and the lower portion of the lens holder (2) is provided with at least two mounting portions (202).

14. The illumination device of claim 11, wherein, The lens holder (2) is provided with a mounting portion (202), which is formed as a groove structure with the opening facing forward, a cylinder or a circular truncated cone is arranged in the groove structure, the cylinder or the circular truncated cone passes through the groove structure and forms a mounting through hole or a blind hole with the opening facing backward.

15. A headlamp characterized by comprising: The lighting device according to any one of claims 1-14.

16. A vehicle characterized by comprising: The headlamp comprising the front light according to claim 15.

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