CN112781003A - Headlamp optical assembly, lighting device, headlamp and vehicle - Google Patents

Headlamp optical assembly, lighting device, headlamp and vehicle Download PDF

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Publication number
CN112781003A
CN112781003A CN202010519122.7A CN202010519122A CN112781003A CN 112781003 A CN112781003 A CN 112781003A CN 202010519122 A CN202010519122 A CN 202010519122A CN 112781003 A CN112781003 A CN 112781003A
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CN
China
Prior art keywords
light
optical assembly
headlamp
lens holder
headlamp optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010519122.7A
Other languages
Chinese (zh)
Inventor
仇智平
朱柯仰
祝贺
桑文慧
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HASCO Vision Technology Co Ltd
Original Assignee
HASCO Vision Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HASCO Vision Technology Co Ltd filed Critical HASCO Vision Technology Co Ltd
Priority to CN202010519122.7A priority Critical patent/CN112781003A/en
Priority to EP21823130.6A priority patent/EP4130555A4/en
Priority to PCT/CN2021/083316 priority patent/WO2021248981A1/en
Priority to JP2022564723A priority patent/JP7456000B2/en
Publication of CN112781003A publication Critical patent/CN112781003A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment thereof
    • F21S41/295—Attachment thereof specially adapted to projection lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/322—Optical layout thereof the reflector using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Abstract

The invention relates to a vehicle lamp and discloses a headlamp optical assembly which comprises a light-gathering element (1) and a lens support (2), wherein a cavity suitable for accommodating the light-gathering element (1) is formed in the lens support (2), an embedding structure suitable for being embedded with each other is formed in the cavity and the light-gathering element (1), and the light-gathering element (1) is embedded in the cavity through the embedding structure. The invention also discloses a lighting device comprising the headlamp optical assembly, a headlamp and a vehicle comprising the headlamp. The headlamp optical assembly is characterized in that the light gathering element (1) and the lens support (2) are provided with the embedded structures capable of being embedded with each other so as to connect the light gathering element (1) and the lens support (2), so that the mounting precision between the light gathering element and the lens support is ensured, and the optical efficiency is improved.

Description

Headlamp optical assembly, lighting device, headlamp and vehicle
Technical Field
The present invention relates to vehicle lamps, and in particular, to a headlamp optical assembly. Furthermore, the invention relates to a lighting device, a headlamp and a vehicle comprising the headlamp optical assembly.
Background
Among the lighting device in vehicle headlamps, Matrix headlamp lighting device can be with the regional subdivision of high beam illumination a plurality of illumination areas, realizes the high beam self-adaptation function, shields the target object in vehicle the place ahead, avoids other users on road to dazzle, improves driving safety.
The primary optical elements (e.g., reflectors, light-condensing elements) in the Matrix headlamp lighting device are the core components of the Matrix headlamp lighting device, and the primary optical elements need to precisely orient the light emitted from the light source, generate an intermediate light distribution, and further modulate the light by the secondary optical elements (e.g., lenses) to obtain a desired light shape distribution, so that the requirements for manufacturing accuracy and assembling accuracy of the primary optical elements and the secondary optical elements are very high. However, the conventional Matrix-type headlamp lighting apparatus has the following mounting and connecting relationships among the respective components: the supporting plate is fixedly connected to the radiator provided with the circuit board through screws, the primary optical element is fixed on the supporting plate, and the pressing plate is covered above the primary optical element and is fixedly connected with the supporting plate through screws so as to limit the primary optical element; the secondary optical element is arranged at the front end of the lens support, and the rear end of the lens support is fixedly connected with the radiator. Because the number of the installed parts is large, the accuracy of the relative positions among the primary optical element, the secondary optical element and the lens support is influenced by the multiple positioning installation connection between the supporting plate and the pressing plate, between the supporting plate and the heat radiator and between the lens support and the heat radiator, namely, multiple assembly errors exist among the supporting plate, the pressing plate, the heat radiator and the lens support, and the relative position accuracy among the optical elements is not high enough.
For the above reasons, it is difficult in the prior art to effectively ensure high accuracy of the relative position between the optical elements.
Disclosure of Invention
The problem to be solved by the first aspect of the present invention is to provide a headlamp optical assembly having a simple structure and high accuracy of relative positions of respective parts.
In addition, a second aspect of the present invention is to provide a lighting device having a simple structure and high accuracy of relative positions of respective parts in the lighting device.
Further, a third aspect of the present invention is to provide a headlamp having a simple structure and high accuracy of relative positions of respective parts in the headlamp.
Further, a problem to be solved by a fourth aspect of the present invention is to provide a vehicle having a simple headlamp structure with high accuracy of relative positions of respective parts in the headlamp.
In order to solve the above technical problem, a first aspect of the present invention provides a headlamp optical assembly, including a light collecting element and a lens holder, wherein a cavity adapted to accommodate the light collecting 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 light collecting element, and the light collecting element is fitted in the cavity through the fitting structure.
As a preferred embodiment, the fitting structure includes an insertion portion provided on an inner peripheral wall of the cavity and an insertion groove provided at a front end of the light condensing element.
Preferably, the light condensing element is formed as an integral molding with the lens holder.
Preferably, the embedded part is formed around the inner circumferential wall of the cavity, and a plurality of through holes penetrating through the embedded part are formed on the embedded part.
More preferably, the insertion groove is a groove body suitable for the insertion of the insertion portion, and columns capable of being inserted into the through holes in a one-to-one correspondence manner are integrally formed in the insertion groove.
Further preferably, the caulking groove is integrally formed around the light exit portion of the light condensing element.
As another preferred embodiment, the light-condensing element includes a plurality of collimating units, a single collimating unit includes an incident portion, a light-guiding portion, and an emergent portion, each of the emergent portions is integrally formed as an emergent portion of the light-condensing element, a wedge-shaped gap is formed between each of the light-guiding portions, and an opening of the wedge-shaped gap is gradually reduced along a light-emitting direction.
More preferably, a longitudinal sectional area of each of the light guide parts is gradually reduced from front to rear.
In a further preferred embodiment, the longitudinal cross-sectional area of the lens holder is decreased from front to back and then increased, and the insertion portion is provided at the position where the longitudinal cross-sectional area is smallest.
Typically, the lens holder is provided with a mounting portion provided in a central region of the lens holder.
As a specific structure form, the upper part of the lens support is provided with at least one mounting part, and the lower part of the lens support is provided with at least two mounting parts.
As another specific structural form, the mounting portion is formed into a groove structure with a forward opening, a cylinder or a circular truncated cone is arranged in the groove structure, and the cylinder or the circular truncated cone penetrates through the groove structure and is provided with a mounting through hole or a blind hole with a backward opening.
In addition, a second aspect of the present invention provides an illumination device, which sequentially includes, from front to back, a secondary optical element, the headlamp optical assembly according to any one of the first aspect, a positioning element for positioning a 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 a front end of the headlamp optical assembly, and the headlamp optical assembly, the positioning element, and the circuit board are fixedly connected to the heat sink.
As a specific implementation manner, a plurality of separating ribs are arranged on the positioning element, positioning openings are formed between every two adjacent separating ribs, and each positioning opening is in one-to-one correspondence with the light source.
More specifically, the cross-sectional shape of the spacer ribs is rectangular or circular.
In another embodiment, a gap is formed between the rear end surface of the mounting portion and the heat sink.
Further specifically, a flange is formed at the rear end of the lens support, and the rear side surface of the flange is suitable for being abutted with the circuit board; or a flange is formed at the rear end of the lens support, a boss is formed on the side surface of the rear side of the flange, and the end surface of the boss is suitable for being attached to the circuit board.
Furthermore, a third aspect of the present invention provides a headlamp according to any one of the second aspect technical solutions.
Further, a fourth aspect of the invention also provides a vehicle including the headlamp according to the third aspect.
Through the technical scheme, the headlamp optical assembly comprises the light-gathering element and the lens support, wherein a cavity suitable for containing the light-gathering element is formed in the lens support, the cavity and the light-gathering element are provided with embedded structures suitable for being mutually embedded, and the light-gathering element is embedded in the cavity through the embedded structures. The headlamp optical assembly provided by the invention has the advantages that the embedded structures which can be embedded with each other are arranged on the light-gathering element and the lens support, so that the installation precision between the light-gathering element and the lens support can be ensured, and the optical efficiency is improved.
Further advantages of the present invention, as well as the technical effects of preferred embodiments, are further described in the following detailed description.
Drawings
FIG. 1 is one of the schematic structural views of one embodiment of the headlamp optical assembly of the present invention;
FIG. 2 is a second schematic structural view of an embodiment of the headlamp optical assembly of the present invention;
FIG. 3 is a top view of one embodiment of the headlamp optical assembly of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a side view of one embodiment of the headlamp optical assembly of the present invention;
FIG. 6 is a cross-sectional view B-B of FIG. 5;
FIG. 7 is a schematic structural view of one embodiment of a lens holder of the present invention;
FIG. 8 is a schematic structural diagram of one embodiment of a light concentrating element of the present invention;
FIG. 9 is one of the schematic structural views of an embodiment of the lighting device of the present invention;
FIG. 10 is a side view of one embodiment of the lighting device of the present invention;
FIG. 11 is a cross-sectional view C-C of FIG. 10;
FIG. 12 is an enlarged partial schematic view of section D of FIG. 11;
FIG. 13 is a schematic view of the mounting structure of the positioning member, the light source and the circuit board according to the present invention;
FIG. 14 is a second schematic view of the mounting structure of the positioning member, the light source and the circuit board according to the present invention;
FIG. 15 is a schematic structural view of one embodiment of a positioning member of the present invention;
FIG. 16 is a second schematic structural view of an embodiment of the lighting device of the present invention;
FIG. 17 is a third schematic structural view of an embodiment of the lighting device of the present invention;
FIG. 18 is a fourth schematic structural view of an embodiment of the lighting device of the present invention.
Description of the reference numerals
1 light-condensing element 101 collimation unit
1011 incident portion 1012 light guide portion
1013 light-emitting part 1014 caulking groove
1015 column 102 wedge gap
2 lens holder 201 fitting part
2011 through hole 202 mounting part
203 turnup 3 secondary optical element
4 positioning piece 401 positioning port
402 spacer bar 403 mounting hole
5 light source 6 circuit board
7 radiator 8 screw
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, and it is to be understood that the detailed description is provided for purposes of illustration and explanation and is not intended to limit the scope of the invention.
In the description of the present invention, it should be explained that the directions or positional relationships indicated by the terms "front" and "rear" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of simplifying the description of the present invention, where front and rear in the present invention refer to the light path in which the light rays are mainly transmitted after being converged by the light condensing element 1, one end where the light rays are incident is the rear end, one end where the light rays are emitted is the front end, that is, the end where the light source 5 is located is the rear end, and the end where the secondary optical element 3 is located is the front end.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 6, the present invention provides a headlamp optical assembly, which includes a light-gathering element 1 and a lens holder 2, wherein a cavity adapted to accommodate the light-gathering element 1 is formed on the lens holder 2, a fitting structure adapted to be fitted with each other is formed in the cavity and the light-gathering element 1, and the light-gathering element 1 is fitted in the cavity through the fitting structure.
In the existing headlamp optical assembly, the light condensing element 1 and the lens support 2 are important components forming the headlamp optical assembly, and are indirectly positioned, so that installation errors are formed due to multiple positioning, and the installation precision between the light condensing element 1 and the lens support 2 directly influences the light emitting effect of the headlamp, therefore, the light condensing element 1 and the lens support 2 are provided with mutually embedded structures, so that the light condensing element 1 and the lens support 2 are directly connected and positioned, the positioning and installation errors are reduced, and the installation precision between the light condensing element 1 and the lens support 2 is improved.
The fitting of the light condensing element 1 and the lens holder 2 of the present invention may have two structural forms, and as one of the structural forms, the light condensing element 1 and the lens holder 2 are preferably formed as an integrally formed part, and by the fitting structure, the positioning accuracy between the light condensing element 1 and the lens holder 2 is higher.
Here, since the light collecting element 1 and the lens holder 2 are integrally molded, the light collecting element 1 and the lens holder 2 may be made of the same material or different materials. Preferably, the light-condensing element 1 and the lens holder 2 are made of different materials, the light-condensing element 1 can be made of a material with better heat resistance and optical performance (such as silica gel), and the lens holder 2 can be made of a material with better rigidity (such as PC, PMMA, etc. or a mixture thereof), so as to support the light-condensing element 1 better and enhance the stability thereof.
Meanwhile, the lens holder 2 and the light-gathering element 1 are integrally formed by an insert molding process, and the molding process is as shown in fig. 4 and 6: first, the lens holder 2 is injection molded; then, the lens holder 2 is placed in a mold for injection molding of the light condensing element 1, and a material is poured to obtain an integrally molded part of the lens holder 2 and the light condensing element 1. Of course, other molding processes and methods for realizing the integral structure between the lens holder 2 and the light collecting element 1 may be used, for example, two-color injection molding may also be used.
As shown in fig. 7 and 8, as a preferred embodiment of the present invention, the fitting structure includes an insertion portion 201 provided on the inner peripheral 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 exiting portion of the light collecting element 1, so that the fitting structure can be provided at the front end of the light collecting element 1, and the rigidity of the light exiting portion 1013 can be effectively improved.
As shown in fig. 7, a cavity for accommodating the light collecting element 1 is formed in the lens holder 2, the cavity is through-going in the front-rear direction, an insertion portion 201 is formed on the inner side wall of the periphery of the cavity, the insertion portion 201 extends from the periphery to the center, is formed around the periphery along the inner peripheral wall of the cavity, and is in a thin plate shape, and a plurality of through holes 2011 penetrating through the insertion portion 201 are formed in the insertion portion 201.
As shown in fig. 8, the insertion groove 1014 is a groove body adapted to be inserted by the insertion portion 201, and the insertion groove 1014 is integrally formed with a column 1015 capable of being inserted into the through holes 2011 in a one-to-one correspondence manner.
The recessed groove 1014 is formed integrally with the periphery of the light emitting portion of the light collecting element 1.
It can be seen that the fitting structure of the present invention is to fit the fitting portion 201 into the fitting groove 1014, and to make the fitting structure stronger and the fitting strength higher, the column 1015 and the through hole 2011 are also fitted together, and this fitting structure can firmly fit the light collecting element 1 and the lens holder 2 into one. Note that, when the light collecting element 1 and the lens holder 2 are firmly fitted to each other, they are inseparable from each other, and fig. 7 and 8 are shown as two parts only for showing the specific configurations of the two parts.
As another structure form of the fitting of the light condensing element 1 and the lens holder 2, the lens holder 2 is formed into a split structure, which may be a vertically split form or a horizontally split form, and at this time, the through hole 2011 on the embedding portion 201 is replaced by a clamping groove with an opening, which can be clamped on the column 1015, and the structure can ensure the installation accuracy of the light condensing element 1 and the lens holder 2 and is more convenient to install at the same time, during installation, the split lens holder 2 is closed, and the clamping hole is clamped with the column 1015 to fit the light condensing element 1 and the lens holder 2; when the lens holder 2 is detached, the light-gathering element 1 and the lens holder 2 can be separated by opening the split lens holder 2.
As shown in fig. 8, as another preferred embodiment of the present invention, the light-focusing element 1 includes a plurality of collimating units 101, a single collimating unit 101 includes an incident portion 1011, a light-guiding portion 1012 and an emergent portion 1013, each emergent portion 1013 is integrally formed as an emergent portion of the light-focusing element 1, a wedge-shaped gap 102 is formed between each light-guiding portion 1012, an opening of the wedge-shaped gap 102 is gradually reduced along a light-emergent direction, and a longitudinal cross-sectional area of each light-guiding portion 1012 is gradually reduced from a front direction to a rear direction.
The collimating unit 101 is used for converging and collimating incident light, the single collimating unit 101 comprises an incident portion 1011, a light guiding portion 1012 and an emergent portion 1013, the incident portion 1011 and the light guiding portion 1012 of the single collimating unit 101 are in one-to-one correspondence, and the emergent portions 1013 of all the collimating units 101 are connected with each other to form the emergent portion of the light-focusing element 1, that is, the light-focusing element 1 has a plurality of incident portions 1011 and light guiding portions 1012, but only one emergent portion of the light-focusing element 1 is shared. Moreover, the light-emitting portion of the light-condensing element 1 is integrally formed in the cavity of the lens support 2, and the light-emitting portion of the light-condensing element 1 and the lens support 2 are integrally formed, so that the position stability of the light-emitting portion can be ensured, because the light-emitting portion of the light-condensing element 1 is an important optical surface which affects the light shape effect, namely, the light-emitting portion of the light-condensing element 1, and the light-emitting portion may be deformed due to heat and stress during installation and use to affect the light shape effect, so that the deformation of the light-emitting portion of the light-condensing element 1 can be reduced or even avoided by integrally forming the light-emitting portion with the lens support 2, and the light emission is more stable.
More preferably, the longitudinal cross-sectional area of the lens holder 2 is decreased from front to back and then increased, and the insertion portion 201 is provided at the minimum position of the longitudinal cross-sectional area.
The longitudinal section area of the lens support 2 is made into a shape that the section area is firstly reduced from front to back and then increased, and the position with the minimum section area is the position of the light emergent part of the light-gathering element 1, so that the space occupied by the lens support 2 is reduced, more spaces can be provided with the heat radiators 7, and compared with the lens support 2 with the section area gradually increased from the front end to the rear end in the prior art, the lens support 2 can enable the structure after the connection of related parts to be more compact.
In another preferred embodiment of the present invention, the lens holder 2 is provided with a mounting portion 202, and the mounting portion 202 is provided in a middle region of the lens holder 2.
It is further preferable that at least one of the mounting portions 202 is disposed on the upper portion of the lens holder 2, and at least two of the mounting portions 202 are disposed on the lower portion of the lens holder 2, so that the three mounting portions 202 can form a triangular mounting structure on a plane, and the mounting point of the lens holder 2 and the heat sink 7 is more stable.
It should be noted that, as shown in fig. 17, the middle of the lens holder 2 is provided with a mounting portion 202 fixedly connected with the heat sink 7, so that the mounting portion 202 is closer to the center of gravity of the lens and the optical assembly of the headlamp, and the vibration stability of the lighting device is greatly improved. This central region is located at the central region of the front-to-rear length of the lens holder 2, i.e., in the region 1/4 forward and rearward from the midpoint of the lens holder 2.
Further, the mounting portion 202 is formed as a groove structure with a forward opening, and a cylinder or a circular truncated cone is disposed in the groove structure, and the cylinder or the circular truncated cone passes through the groove structure and is formed with a mounting through hole or a blind hole with a backward opening. The groove structure can effectively improve the strength of the installation part 202 on the basis that the thickness of the installation part is not increased as much as possible, and the cylinder or the circular truncated cone is arranged in the groove structure, so that the installation strength of the lens support 2 and the radiator 7 can be improved, meanwhile, the installation part 202 and the radiator 7 can be machined and adjusted when the gap is out of tolerance, only the rear end face of the cylinder or the circular truncated cone is adjusted, and the adjustment amount is small. Of course, the arrangement of the groove structure is not limited to a cylinder or a circular truncated cone, and may be a rectangular parallelepiped or other structures, which does not affect the installation of the installation portion 202 and the heat sink 7.
In addition, the second aspect of the present invention further provides an illumination device, which sequentially comprises a secondary optical element 3, a headlamp optical assembly according to any one of the above technical solutions, a positioning member 4 for positioning a rear end of the headlamp optical assembly, a light source 5, a circuit board 6 electrically connected to the light source 5, and a heat sink 7 from front to back, wherein the secondary optical element 3 is connected to a front end of the headlamp optical assembly, and the headlamp optical assembly, the positioning member 4, and the circuit board 6 are fixedly connected to the heat sink 7.
It should be noted that the secondary optical element 3 of the present invention is preferably a lens, and the lens is connected to the front end of the lens holder 2 by laser welding, gluing, or snap-fit connection, or other suitable connection methods.
As shown in fig. 15, as a specific structural form of the present invention, a plurality of spacer ribs 402 are disposed on the positioning member 4, positioning openings 401 are formed between two adjacent spacer ribs 402, and each positioning opening 401 is disposed in one-to-one correspondence with the light source 5.
In the above technical solution, a wedge-shaped gap 102 is formed between a plurality of collimating units 101 of the light condensing element 1, in order to ensure the accuracy of the relative positions of the light incident portions 1011 of the plurality of collimating units 101 and the light sources 5 on the circuit board 6, a positioning member 4 for positioning each light incident portion 1011 is further provided in the lighting device of the present invention, a plurality of ribs 402 are provided in the positioning member 4, a positioning opening 401 for the collimating unit 101 to pass through and position is formed between two adjacent ribs 402, the positioning opening 401 corresponds to the light sources 5 on the circuit board 6 one by one, the plurality of collimating units 101 may be arranged in a row or in multiple rows, and correspondingly, the positioning opening 401 may be arranged in a row or in multiple rows. The light incident portion 1011 of each collimating unit 101 can be inserted into the corresponding positioning opening 401 to be positioned, so that the light emergent portion 1013 and the light incident portion 1011 of the light condensing element 1 are both positioned, the front end of the light condensing 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 piece 4, thereby effectively improving the positioning precision of the light condensing element 1 and improving the light emitting effect.
Specifically, as can be seen from fig. 9 to 12, the spacer ribs 402 are in the shape of partition plates, the width of the transverse section of the positioning port 401 gradually narrows from front to back, and the width of the transverse section 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, so that the contact area between the collimating unit 101 and the spacer ribs 402 is as small as possible, on one hand, the guiding during insertion is facilitated, on the other hand, the positioning accuracy can be ensured by the small-area contact, and therefore, more specifically, the contact between the collimating unit 101 and the spacer ribs 402 is line contact. It can be seen that the spacer ribs 402 may also be cylindrical, i.e. the cross-sectional shape of the spacer ribs 402 is rectangular or circular, forming a line contact with the collimating unit 101.
As shown in fig. 13 and 14, the positioning member 4 is fixedly connected to the heat sink 7 by two screws 8 and the circuit board 6.
As another specific configuration of the present invention, a gap is formed between the rear end surface of the mounting portion 202 and the heat sink 7.
As can be seen from fig. 18, the mounting portion 202 and the heat sink 7 are fixedly connected by a fastener (e.g., a screw, a bolt, etc.), and when the fastener is tightened, the lens holder 2 is forced to make the rear end surface of the lens holder 2 abut against the circuit board 6, so as to ensure the relative positional reliability between the light-collecting element 1 and the light source 5. Meanwhile, in order to prevent the over-positioning in the front-rear direction between the lens holder 2 and the heat sink 7, a corresponding gap should be left between the mounting portion 202 and the heat sink 7 to avoid the mounting of the lens holder 2 and the heat sink 7 being out of place due to manufacturing errors.
As a further specific construction form of the invention, the rear end of the lens holder 2 is formed with a flange 203, and the rear side surface of the flange 203 is adapted to abut against the circuit board 6.
As an alternative to the above-mentioned specific structure, the rear end of the lens holder 2 is formed with a flange 203, and the rear side surface of the flange 203 is formed with a boss, the end surface of which is adapted to abut against the circuit board 6.
Further, a third aspect of the present invention also provides a headlamp comprising the lighting device according to any one of the above technical aspects.
Still further, a fourth aspect of the present invention also provides a vehicle including the headlamp according to the above-described aspect.
As can be seen from the above description, the headlamp optical assembly of the present invention includes a light-collecting element 1 and a lens holder 2, wherein the lens holder 2 is formed with a cavity adapted to receive the light-collecting element 1, and a fitting structure adapted to be fitted with each other is formed in the cavity and on the light-collecting element 1, and the light-collecting element 1 is fitted in the cavity through the fitting structure. The headlamp optical assembly of the invention can effectively improve the positioning precision between the light condensing element 1 and the lens support 2 by arranging the tabling structures which can be tabled with each other on the light condensing element 1 and the lens support 2, can ensure good light distribution performance, improves the optical efficiency and obtains ideal illumination light shape.
In addition, the light condensing element 1 and the lens holder 2 are preferably integrally formed, and fitting structures provided on the light condensing element 1 and the lens holder 2 are fitted with each other, so that the mounting error between the light condensing element 1 and the lens holder 2 can be reduced, the mounting accuracy between the light condensing element 1 and the lens holder 2 can be improved, and the light emitting effect can be ensured.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims (19)

1. A headlamp optical assembly is characterized by comprising a light-gathering element (1) and a lens support (2), wherein a cavity suitable for accommodating the light-gathering element (1) is formed on the lens support (2), a matching structure suitable for matching with each other is formed in the cavity and the light-gathering element (1), and the light-gathering element (1) is matched in the cavity through the matching structure.
2. Headlamp optical assembly according to claim 1, wherein the fitting structure comprises an insert (201) provided on an inner peripheral wall of the cavity and a recess (1014) provided at a front end of the light-concentrating element (1).
3. Headlamp optical assembly according to claim 2, characterized in that the light-focusing element (1) is formed as an integral molding with the lens holder (2).
4. The headlamp optical assembly according to claim 3, wherein the insert portion (201) is formed around the inner circumferential wall of the cavity, and a plurality of through holes (2011) penetrating through the insert portion (201) are formed on the insert portion (201).
5. The headlamp optical assembly according to claim 4, wherein the insertion groove (1014) is a groove body adapted to be inserted by the insertion portion (201), and the insertion groove (1014) is integrally formed therein with a column (1015) capable of being inserted into the through-hole (2011) in a one-to-one correspondence.
6. Headlamp optical assembly according to claim 5, characterized in that the bezel (1014) is integrally formed around the light exit portion of the light concentrating element (1).
7. The headlamp optical assembly according to claim 2, wherein the light-focusing element (1) comprises a plurality of collimating units (101), a single collimating unit (101) comprises an incident portion (1011), a light-guiding portion (1012) and an emergent portion (1013), each emergent portion (1013) is integrally formed as an emergent portion of the light-focusing element (1), a wedge-shaped gap (102) is formed between each light-guiding portion (1012), and an opening of the wedge-shaped gap (102) is gradually reduced along the emergent direction.
8. The headlamp optical assembly according to claim 7, wherein each of the light guide portions (1012) has a longitudinal sectional area that is gradually reduced from a front side to a rear side.
9. The headlamp optical assembly according to any one of claims 2 to 8, wherein the longitudinal cross-sectional area of the lens holder (2) decreases from front to back and then increases, and the insert portion (201) is provided at the position where the longitudinal cross-sectional area is smallest.
10. The headlamp optical assembly according to claim 9, wherein the lens holder (2) is provided with a mounting portion (202), the mounting portion (202) being provided in a central region of the lens holder (2).
11. The headlamp optical assembly according to claim 9, 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).
12. The headlamp optical assembly according to claim 9, wherein the mounting portion (202) is formed as a forwardly opening groove structure having a cylinder or truncated cone disposed therein, the cylinder or truncated cone passing through the groove structure and being formed with a rearwardly opening mounting through hole or blind hole.
13. A lighting device, characterized by comprising, in order from front to back, a secondary optical element (3), a headlamp optical assembly according to any one of claims 1 to 12, a positioning member (4) for positioning the rear end of the headlamp 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 headlamp optical assembly, and the headlamp optical assembly, the positioning member (4), and the circuit board (6) are fixedly connected to the heat sink (7).
14. The lighting device according to claim 13, wherein a plurality of separating ribs (402) are arranged on the positioning member (4), a positioning opening (401) is formed between two adjacent separating ribs (402), and each positioning opening (401) is arranged in one-to-one correspondence with the light source (4).
15. A lighting device as claimed in claim 14, characterized in that the cross-sectional shape of the spacer ribs (402) is rectangular or circular.
16. The lighting device according to any one of claims 13 to 15, wherein a gap is formed between a rear end surface of the mounting portion (202) and the heat sink (7).
17. A lighting device as claimed in any one of claims 13 to 15, characterized in that the rear end of the lens holder (2) is formed with a flange (203), the rear side of the flange (203) being adapted to abut against the circuit board (6); or
The rear end of the lens support (2) is provided with a flange (203), the rear side surface of the flange (203) is provided with a boss, and the end surface of the boss is suitable for being attached to the circuit board (6).
18. A headlamp characterized by the lighting device according to any one of claims 13 to 17.
19. A vehicle characterized by comprising a headlamp according to claim 18.
CN202010519122.7A 2020-06-09 2020-06-09 Headlamp optical assembly, lighting device, headlamp and vehicle Pending CN112781003A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN202010519122.7A CN112781003A (en) 2020-06-09 2020-06-09 Headlamp optical assembly, lighting device, headlamp and vehicle
EP21823130.6A EP4130555A4 (en) 2020-06-09 2021-03-26 Headlamp optical assembly, illumination device, headlamp, and vehicle
PCT/CN2021/083316 WO2021248981A1 (en) 2020-06-09 2021-03-26 Headlamp optical assembly, illumination device, headlamp, and vehicle
JP2022564723A JP7456000B2 (en) 2020-06-09 2021-03-26 Headlight optics, lighting devices, headlights and vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010519122.7A CN112781003A (en) 2020-06-09 2020-06-09 Headlamp optical assembly, lighting device, headlamp and vehicle

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EP4130555A1 (en) 2023-02-08
JP2023522758A (en) 2023-05-31
EP4130555A4 (en) 2023-08-30
JP7456000B2 (en) 2024-03-26
WO2021248981A1 (en) 2021-12-16

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