Circuit board, vehicle lamp module and vehicle lamp

Abstract

The invention relates to a vehicle lamp, and discloses a circuit board, a light passing part is arranged on the circuit board, and / or one side of the circuit board forms the light passing part, and a light and shade cut-off line structure is formed on the edge, connected with the light passing part, of the circuit board. In addition, the invention further discloses a vehicle lamp module and a vehicle lamp. The circuit board, the vehicle lamp module and the vehicle lamp are simple in structure and good in light emitting effect.

Description

Technical Field

[0001] The present application relates to a vehicle lamp, and more particularly, to a circuit board. In addition, the present application also relates to a vehicle lamp module and a vehicle lamp. Background Art

[0002] Current vehicle lighting systems are generally divided into high-beam and low-beam systems. Existing low-beam lighting systems all have a low-beam cutoff line, which ensures the safety of the driver while preventing glare to other road users. Therefore, the low-beam cutoff line plays an important role in preventing glare to other road users.

[0003] Existing projection-type headlight systems generally form a cutoff line using a shading structure positioned at or near the lens focal point. For example, in patent 201510059641.9, a near-light cutoff line is formed by providing a hood or shading structure. However, this results in a more complex component structure and an increased number of parts. Other methods utilize the boundaries of a reflective surface to form a near-light cutoff line. For example, in patent 201811196900.2, a reflector has a reflective boundary corresponding to the cutoff line shape required by the headlight system's illumination pattern. However, this reflector is prone to a small amount of light leakage beyond the reflective boundary, which not only reduces light efficiency but also easily generates stray light.

[0004] Based on the above reasons, it is difficult in the prior art to effectively ensure that a headlight with a low-brightness cut-off line has a simpler structure and higher light efficiency. Summary of the Invention

[0005] The problem to be solved in the first aspect of the present application is to provide a circuit board, on which the edge connected to the light-transmitting part is provided with a light-dark cutoff line structure, which can replace the shading parts or structures used to form the light-dark cutoff line, and simplify the structure of the car light without affecting the light output effect.

[0006] The problem to be solved in the second aspect of the present application is to provide a vehicle light module, which is provided with a light-and-dark cutoff line structure at the edge connected to the light-through part of the circuit board to replace the shading parts or structures that form the light-and-dark cutoff line, and the collimating optical element is combined with the focusing element and the light-and-dark cutoff line structure to form a high beam lighting light pattern, an auxiliary low beam lighting light pattern and a main low beam lighting light pattern, with a simple structure and good light output effect.

[0007] In addition, the problem to be solved in the third aspect of this application is to provide a car lamp with a simple structure and good light output effect.

[0008] In order to solve the above technical problems, the first aspect of the present application provides a circuit board, which is provided with a light-transmitting area, and / or one side of the circuit board is formed as the light-transmitting area, and the edge of the circuit board connected to the light-transmitting area is formed with a light-dark cutoff line structure.

[0009] Preferably, the light-dark cutoff line structure includes a main near light-dark cutoff line structure and / or an auxiliary near light-dark cutoff line structure, the main near light-dark cutoff line structure is formed as a plurality of line segments and / or arcs continuously connected, and the auxiliary near light-dark cutoff line structure is formed as a line segment or an arc.

[0010] Preferably, the substrate of the circuit board is at least one of an aluminum plate, a copper plate, a ceramic substrate or a glass fiber reinforced plastic substrate.

[0011] Preferably, the surface of the substrate of the circuit board is provided with a black or white coating.

[0012] Preferably, the main near-bright light-dark cut-off line structure has at least one inflection point, and the inflection point is a sharp corner or a rounded corner, and the rounded corner is preferably R0.5mm to R2mm.

[0013] Preferably, a light shielding structure is further provided on the circuit board, and the light shielding structure forms a part of the light-dark cut-off line structure.

[0014] The second aspect of the present application also provides a vehicle light module, comprising a circuit board, a light source, and a focusing element and an optical collimating element arranged in sequence along the light transmission direction according to any one of the technical solutions of the first aspect, wherein the light source is arranged on the circuit board.

[0015] Preferably, the focusing element is a reflector, and the reflector is arranged corresponding to the light source.

[0016] Preferably, the reflector includes at least one of a main low-beam reflector, an auxiliary low-beam reflector, and a high-beam reflector.

[0017] Preferably, the reflective surface of the main low-beam reflector is a parabolic reflective surface, a quasi-parabolic reflective surface, an ellipsoidal reflective surface or a quasi-ellipsoidal reflective surface, and the reflective surface of the auxiliary reflector is a parabolic reflective surface, a quasi-parabolic reflective surface, an ellipsoidal reflective surface or a quasi-ellipsoidal reflective surface.

[0018] Preferably, the reflective surface of the reflector includes a first reflective surface and a second reflective surface, the light emitting direction of the first reflective surface is nearly parallel to the light emitting surface of the light source, and the light emitting direction is toward the optical collimating element.

[0019] Preferably, the optical collimating element is one of a lens, a reflector, a lens group, or a lens and reflector combination.

[0020] Preferably, the circuit board is formed in a direction opposite to the light emitting direction of the optical element, the light source is at least partially blocked by the circuit board, and the angle between the light source and the optical axis of the optical collimating element is 0-30°.

[0021] Preferably, the minimum distance between the light-dark cut-off line structure and the light source is 0.5-100 mm.

[0022] Preferably, the minimum distance between the light-dark cut-off line structure and the light source is 3-60 mm.

[0023] Preferably, the light source includes a light-emitting body and a driving device thereof, the circuit board includes a first circuit board and a second circuit board, the light-emitting body is arranged on the first circuit board, the driving device is arranged on the second circuit board, and the edge of the second circuit board connected to the light-transmitting part is formed with the light-cutoff line structure.

[0024] Preferably, the light source includes at least one of a main low-beam light source, an auxiliary low-beam light source, and a high-beam light source. Corresponding to the light source, the focusing element includes at least one of a main low-beam focusing element, an auxiliary low-beam focusing element, and a high-beam focusing element. The main low-beam light source, the main low-beam focusing element, and the corresponding optical collimating element form a main low-beam illumination light pattern, wherein the focus of the corresponding optical collimating element is set at the inflection point of the main low-beam light-dark cut-off line structure, or within a 5 mm diameter range around the inflection point.

[0025] The auxiliary low-beam light source, the auxiliary low-beam focusing element and the corresponding optical collimating element form an auxiliary low-beam lighting light pattern, wherein the focus or focal line of the corresponding optical collimating element is set at the auxiliary low-beam light-dark cut-off line structure or within a 5 mm diameter range around the auxiliary low-beam light-dark cut-off line structure.

[0026] Preferably, the high beam light source, the high beam focusing element and the corresponding optical collimating element form a high beam lighting light pattern, the high beam focusing element is a high beam reflector, and the focus of the corresponding optical collimating element is set on the reflecting surface of the high beam reflector or within a 5 mm diameter range around the reflecting surface.

[0027] Preferably, when the optical collimating element used to form the auxiliary low beam lighting pattern is an optical element having only a unidirectional collimating function for light, the optical collimating element only forms a focal line, which is arranged at the auxiliary low beam light / dark cut-off line structure or within a 5 mm diameter range around it.

[0028] In addition, the third aspect of the present application also provides a vehicle lamp, comprising a vehicle lamp module according to any one of the technical solutions of the second aspect.

[0029] The vehicle light module of this application has the following advantages:

[0030] First, the circuit board of the present application can adopt a trimming process to directly form a light-dark cutoff line structure, so that the headlight module of the present application does not need to add any additional shading parts or structures for forming the light-dark cutoff line.

[0031] Second, the packaging structure of the light source of the present application, the shading plate, and other electronic components or non-electronic components on the circuit board (such as the focusing element set on the circuit board) can also be set to form a part of the light-dark cutoff line structure to participate in blocking light and form a part of the light-dark cutoff line.

[0032] Third, the circuit board is oriented in a direction opposite to the light output of the optical collimating element, so that the light source is at least partially obscured by the circuit board and the angle with the optical axis of the optical collimating element is 0-30°. Specifically, the circuit board can be tilted downward from front to back, so that both direct and reflected light from the light source enter from above the focal point of the optical collimating element. As a result, the direct light from the light source is located within the low-beam illumination pattern and does not form unnecessary bright spots above the cutoff line. In other words, the direct light from the light source does not become stray light. This eliminates the need for a structure that blocks the direct light from the light source.

[0033] Fourth, without setting up a shielding structure, the direct light emitted by the light source can be projected onto the optical collimating element after passing through the focusing element. The light within the entire solid angle range of the light source can be utilized, the light utilization rate is higher, and the light extraction efficiency is improved.

[0034] Fifth, the substrate of the circuit board of the present application is provided with a coating. This coating can be applied with black ink to absorb light, or it can be coated with white ink and / or partially aluminum-plated to form a reflective coating. This coating reflects a portion of the light that strikes the circuit board toward the optical collimating element and onto the road surface, thereby improving light efficiency. Because this portion of reflected light enters from above the focal point of the optical collimating element, it is located within the low-beam lighting pattern and similarly does not form unnecessary bright spots above the cutoff line. In other words, the reflected light does not become stray light, resulting in a better light output effect.

[0035] Other advantages of the present application and the technical effects of the preferred embodiments will be further described in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is one of the structural schematic diagrams of a specific embodiment of the vehicle light module of the present application;

[0037] Figure 2 This is the second structural diagram of a specific embodiment of the vehicle light module of the present application;

[0038] Figure 3 yes Figure 1 Exploded diagram;

[0039] Figure 4 yes Figure 1 A top view of

[0040] Figure 5 It is a structural schematic diagram of a specific embodiment of a focusing element and a circuit board;

[0041] Figure 6 yes Figure 1 One of the cross-sectional views;

[0042] Figure 7 yes Figure 6 A partial enlarged schematic diagram;

[0043] Figure 8 This is a schematic structural diagram of a specific embodiment of the circuit board of the present application when viewed from the front;

[0044] Figure 9 This is a structural diagram of a specific embodiment of the circuit board and light source of the present application;

[0045] Figure 10 yes Figure 8 A schematic diagram of the structure of the circuit board in a top-down direction;

[0046] Figure 11 FIG3 is a third structural diagram of a specific embodiment of the vehicle lamp module of the present application, showing the positions of the focal points P1, P2, P3 and the focal line PL of the optical collimating element;

[0047] Figure 12 yes Figure 1 The second cross-sectional view shows that in low-beam lighting mode, the focus of the optical collimating element is set within a 5mm diameter range at or near the edge of the circuit board;

[0048] Figure 13 yes Figure 1 The third cross-sectional view shows that in high-beam lighting mode, the focus of the optical collimating element is set within a 5mm diameter range on or near the reflective surface;

[0049] Figure 14 yes Figure 1 The fourth cross-sectional view shows that the reflective surface of the reflector is formed as an ellipsoidal reflective surface, a light source is provided at the first focus thereof, and a second focus is in the light output path of the reflector;

[0050] Figure 15 Schematic diagram of the main low beam lighting pattern;

[0051] Figure 16 Schematic diagram of the auxiliary low-beam lighting pattern, with the focus of the optical collimator being set slightly to the right of the cut-off line structure;

[0052] Figure 17This is a schematic diagram of the auxiliary low-beam lighting pattern, where the focal line of the optical collimator has the same shape as the cut-off line.

[0053] Figure 18 yes Figure 15 、 Figure 16 and Figure 17 Schematic diagram of the light patterns after superposition;

[0054] Figure 19 Schematic diagram of high beam lighting pattern;

[0055] Figure 20 It is a schematic diagram of the superposition of the high beam lighting pattern and the low beam lighting pattern;

[0056] Figure 21 This is a structural diagram of a specific embodiment of the circuit board and light-shielding structure of the present application;

[0057] Figure 22 is a structural schematic diagram of another specific embodiment of the circuit board of the present application;

[0058] Figure 23 This is a structural diagram of a specific embodiment in which the light source and the driving device of the light source of the present application are arranged on different circuit boards;

[0059] Figure 24 is a schematic diagram of the light pattern corresponding to the second reflective surface of the present application;

[0060] Figure 25 is a schematic diagram of the light pattern corresponding to the first reflective surface of the present application;

[0061] Figure 26 This is a schematic diagram of the light pattern corresponding to the direct light of the light source of this application;

[0062] Figure 27 1 is a schematic structural diagram of a first specific embodiment of the cut-off line structure of the present application;

[0063] Figure 28 yes Figure 27 Normal diagram of ;

[0064] Figure 29 1 is a schematic structural diagram of a second specific embodiment of the cut-off line structure of the present application;

[0065] Figure 30 yes Figure 29 Normal diagram of ;

[0066] Figure 31 1 is a schematic structural diagram of a third specific embodiment of the cut-off line structure of the present application;

[0067] Figure 32 yes Figure 31Normal diagram of ;

[0068] Figure 33 It is a structural diagram of the circuit board of this application.

[0069] Description of Reference Numerals

[0070] 1 focusing element 101 reflecting mirror

[0071] 1011 Main reflector 1012 Auxiliary reflector

[0072] 1013 Reflecting surface 1013a first reflecting surface

[0073] 1013b Second reflecting surface 1014 High beam reflector

[0074] 2 light source 201 high beam light source

[0075] 202 Main low beam light source 203 Auxiliary low beam light source

[0076] 3 Circuit board 301 light-transmitting structure

[0077] 302 light and dark cut-off line structure 3021 main and near light light and dark cut-off line structure

[0078] 3021a First inflection point 3021b Second inflection point

[0079] 3022 auxiliary low beam dark cut-off line structure 31 first circuit board

[0080] 32 second circuit board 4 optical collimation element

[0081] 5 radiator 6 fixing parts

[0082] 7 First Focus 8 Second Focus

[0083] 9Shading structure DETAILED DESCRIPTION

[0084] The specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described here are only used to illustrate and explain the present application, and the scope of protection of the present application is not limited to the specific implementation methods described below.

[0085] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "installed" and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0086] In the description of this application, it is necessary to explain that some directional words involved in the following description to clearly illustrate the technical solution of this application, such as "up", "down", "left", "right", etc., are based on the normal use orientation of the headlight module. "Front" refers to the direction of light emission, "rear" refers to the direction opposite to "front", and "up" and "down" refer to the vertical orientation of the headlight module after it is assembled on the vehicle. The terms are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on this application.

[0087] like Figures 8 to 10 、 Figure 22 As shown, the first aspect of the present application provides a circuit board 3, on which a light-transmitting portion 301 is provided, and / or one side of the circuit board 3 is formed as the light-transmitting portion 301, and an edge of the circuit board 3 connected to the light-transmitting portion is formed with a light-dark cutoff line structure 302.

[0088] Specifically, through holes are formed on the circuit board 3, such as Figure 22 The rectangular through-hole shown in the figure can be considered as a light-transmitting area 301. Furthermore, the blank area on one side of the circuit board 3, such as the front area, can be considered as a light-transmitting area. According to the above technical solution, the edge of the circuit board 3 that connects to the light-transmitting area (such as the front edge of the circuit board 3) can be formed into a light-cutoff line structure 302. It is clear that the light-cutoff line structure 302 must be provided on the circuit board 3.

[0089] As a preferred embodiment of the present application, the cutoff line structure 302 includes a main low-beam cutoff line structure 3021 and / or an auxiliary low-beam cutoff line structure 3022. The main low-beam cutoff line structure 3021 is formed as a plurality of continuously connected line segments and / or arcs, while the auxiliary low-beam cutoff line structure 3022 is formed as a line segment or arc. Different cutoff line structures 302 correspond to different focusing elements 1 in the headlight module to produce different lighting patterns.

[0090] As a preferred embodiment of the present application, the substrate of the circuit board 3 is at least one of an aluminum substrate, a copper substrate, a ceramic substrate or a glass fiber reinforced plastic (FR4) substrate.

[0091] More preferably, the substrate surface of the circuit board 3 is provided with a black or white coating. For example, the substrate surface of the circuit board 3 on which the light source 2 is mounted can be provided with a black or white coating. The black coating can absorb most of the light irradiated on the circuit board 3, while the white coating can be formed into a reflective layer. Furthermore, the black coating is preferably black ink to absorb light, and the white coating is preferably white ink and / or a partial aluminum-plated layer to form a reflective layer, thereby improving optical efficiency. In addition, the circuit board 3 can also adopt a copper-exposed process without providing a coating, which can also play a role in reflecting light. In addition, since the reflected light is incident from above the focus of the optical collimating element, this part of the light is located in the low-beam lighting light type and will not form unnecessary bright spots above the light-dark cutoff line, that is, the reflected light will not become stray light.

[0092] As another preferred embodiment of the present application, the main low-light dark-cutoff line structure 3021 has at least one inflection point.

[0093] like Figure 27 and Figure 28 As shown in FIG. 3 , as a first preferred embodiment of the main near-bright light-dark cut-off line structure 3021 of the present application, the main near-bright light-dark cut-off line structure 3021 has four inflection points.

[0094] like Figure 29 and Figure 30 As shown in FIG. 3 , as a second preferred embodiment of the main near-bright light-dark cut-off line structure 3021 of the present application, the main near-bright light-dark cut-off line structure 3021 has an inflection point.

[0095] like Figure 31 and Figure 32 As shown in FIG. 3 , as the third preferred embodiment of the main near-bright light-dark cut-off line structure 3021 of the present application, the main near-bright light-dark cut-off line structure 3021 also has two inflection points.

[0096] In the above three preferred embodiments, different shapes of the main low beam cut-off line structures 3021 form correspondingly different shapes of bright and dark cut-off lines, for example Figure 27 and Figure 28 The main near-bright light / dark cutoff line structure 3021 shown has four inflection points, and the corresponding cutoff line formed is in the shape of a "bathtub". In addition, the inflection points are sharp corners or rounded corners, and the rounded corners are preferably R0.5mm to R2mm.

[0097] As a specific embodiment of this application, Figure 21 As shown, a shading structure 9 can be further provided on the circuit board, and the shading structure 9 is used to participate in the shielding to form a part of the light-dark cut-off line structure 302. For example, the shading structure 9 can be at least one of the packaging structure of the light source, the shading plate, the electronic components or the non-electronic components.

[0098] like Figures 1 to 7 As shown, the second aspect of the present application provides a vehicle lamp module, comprising a circuit board 3 according to any one of the technical solutions of the first aspect, a light source, and a focusing element 1 and an optical collimating element 4 arranged in sequence along the light transmission direction, the light source 2 is arranged on the circuit board, the circuit board 3 is fixed on the heat sink 5, the focusing element 1 and the optical collimating element 4 are connected by a fixing member 6, and the fixing member 6 is preferably a spring clip. The light source 2 is preferably an LED light-emitting chip, a laser light source, etc. The light emitted by the light source is converged by the focusing element 1 and then emitted through the optical collimating element 4 to form an illumination light pattern. Furthermore, the focusing element 1 can be one or more of a reflector, a concentrator, and a lens, or can be other types of light guides, which are not limited here.

[0099] Specifically, the focusing element 1 is a reflector 101, which is disposed corresponding to the light source 2. The reflector 101 can focus the light emitted by the light source 2 and reflect it toward the optical collimating element 4, and the light is emitted from the optical collimating element 4 to form an illumination light pattern.

[0100] Furthermore, if Figure 11 As shown, the reflector 101 includes at least one of a main low-beam reflector 1011, an auxiliary low-beam reflector 1012, and a high-beam reflector 1014, wherein:

[0101] The reflecting surface of the main low-beam reflector 1011 is a parabolic reflecting surface, a quasi-parabolic reflecting surface, an ellipsoidal reflecting surface or a quasi-ellipsoidal reflecting surface, and the reflecting surface of the auxiliary low-beam reflector 1012 is a parabolic reflecting surface, a quasi-parabolic reflecting surface, an ellipsoidal reflecting surface or a quasi-ellipsoidal reflecting surface. When the reflecting surfaces of the main low-beam reflector 1011 and the auxiliary low-beam reflector 1012 are parabolic reflecting surfaces or quasi-parabolic reflecting surfaces, the light source 2 is arranged at the focus of the main low-beam reflector 1011 and the auxiliary low-beam reflector 1012 or near the focus, for example, within a diameter range of 5 mm around the focus. When the reflecting surfaces of the main low-beam reflector 1011 and the auxiliary low-beam reflector 1012 are ellipsoidal reflecting surfaces or quasi-ellipsoidal reflecting surfaces, as Figure 14 As shown, the light source 2 is arranged at the first focus 7 of the main low-beam reflector 1011 and the auxiliary low-beam reflector 1012 or near the first focus 7, for example, within a 5 mm diameter range around the first focus 7, and the second focus 8 is arranged in its light output path, that is, the second focus 8 is arranged in the light path of the light emitted by the light source 2 and then reflected by the reflector 101 and transmitted to the optical collimation element 4.

[0102] As a specific embodiment of the present application, the reflector 101 of the present application includes at least a main low beam reflector 1011, and the main low beam reflector 1011 and the auxiliary low beam reflector 1012 can also be set at the same time. The main low beam reflector 1011 and the auxiliary low beam reflector 1012 are used to converge the light emitted by the light source 2 and reflect it toward the optical collimation element 4.

[0103] As a specific embodiment of the reflector 101 of the present application, Figure 22 As shown, the reflector 101 includes a main low beam reflector 1011 and an auxiliary low beam reflector 1012. The reflecting surface of the main low beam reflector 1011 is a parabolic reflecting surface or a quasi-parabolic reflecting surface, and the reflecting surface of the auxiliary low beam reflector 1012 is an ellipsoidal reflecting surface or a quasi-ellipsoidal reflecting surface. The main low beam reflector 1011 is only formed with a first focus 7, and the light source 2 is arranged at the first focus 7 of the main low beam reflector 1011. The auxiliary low beam reflector 1012 is formed with a first focus 7 and a second focus 8. The light source 2 is arranged at the first focus 7 of the auxiliary low beam reflector 1012, and the light emitting direction of the reflector 101 is toward the optical collimating element 4.

[0104] Specifically, the main low-beam light source 202 is disposed at or near the focus of the main low-beam reflector 1011 , and the auxiliary low-beam light source 203 is disposed at or near the focus of the auxiliary low-beam reflector.

[0105] As another specific embodiment of the reflector 101 of the present application, refer to Figure 11 and Figure 14 As shown, the reflector 101 includes a main low beam reflector 1011 and an auxiliary low beam reflector 1012. The reflecting surfaces of the main low beam reflector 1011 and the auxiliary low beam reflector 1012 are ellipsoidal reflecting surfaces or ellipsoidal-like reflecting surfaces. The main low beam reflector 1011 and the auxiliary low beam reflector 1012 have a first focus 7 and a second focus 8. The main low beam light source 202 and the auxiliary low beam light source 203 are both arranged at the first focus 7 of their respective corresponding reflectors 101, and the second focus 8 of their respective corresponding reflectors 101 are arranged in their light output paths.

[0106] As a preferred embodiment of the reflector 101 of the present application, Figure 6 and Figure 7 As shown, the reflecting surface 1013 of the reflector 101 includes a first reflecting surface 1013a and a second reflecting surface 1013b. The light-emitting direction of the first reflecting surface 1013a is nearly parallel to the light-emitting surface of the light source 2, and the light-emitting direction is toward the optical collimating element 4. The first reflecting surface 1013a can reflect the light emitted by the light source 2 in a direction parallel to the circuit board 3, thereby preventing most of the light from being blocked by the circuit board 3 or the light source 2 and unable to be transmitted to the optical collimating element 4, thereby reducing the light efficiency.

[0107] It should be noted here that nearly parallel can be understood as parallel, or the angle between the parallel and the light-emitting surface of the light source 2 is less than 5°.

[0108] As a specific embodiment of the present application, the optical collimating element 4 is a lens, a reflector, a lens group, a reflector group or a lens and reflector combination, which can converge the parallel light incident on the optical collimating element 4 from the outside to the focus of the optical collimating element 4 or the area near the focus.

[0109] As a specific embodiment of this application, Figure 33 As shown, the circuit board 3 is formed in the direction opposite to the light emitting direction of the optical collimating element 4, the light source 2 is at least partially blocked by the circuit board 3, and the angle f with the optical axis of the optical collimating element 4 is 0-30°, that is, the circuit board 3 can be formed to tilt downward from front to back, and the normal of the light emitting surface of the light source 2 is tilted backward, so that the light emitted by the light source 2 can be more received and reflected by the reflector 101, and the light efficiency is higher. It should be noted that the light emitting direction of the car light module is "front". Of course, in another specific embodiment of the present application, such as Figure 33 As shown in the structure depicted by the dotted line, the circuit board 3 can also be formed to be inclined downward from the back to the front, and the normal of the light-emitting surface of the light source 2 is inclined forward. At this time, the circuit board 3 and the optical axis of the optical collimation element 4 also form a certain angle. In the specific implementation process, the circuit board 3 is set within the range of the angle f inclined downward from the front to the back and the angle inclined downward from the back to the front, and can be set accordingly according to needs.

[0110] Furthermore, since the circuit board 3 is tilted downward from front to back, the light directly emitted by the light source 2 and the light reflected by the reflective surface 1013 are both incident from above the focus of the optical collimating element 4. Therefore, the light directly emitted by the light source 2 is located in the low-beam lighting pattern and will not form unnecessary bright spots above the cut-off line, that is, the light directly emitted by the light source 2 will not become stray light. Therefore, the light within the entire solid angle range of the light source 2 can be utilized, the light utilization rate is higher, and there is no need to set up an additional shielding structure to block the direct light of the light source 2 to prevent the formation of stray light. Figures 24-26 As shown, Figure 24 Schematic diagram of the light pattern corresponding to the second reflective surface 1013b is shown. Figure 25 Schematic diagram of the light pattern corresponding to the first reflecting surface 1013a is shown. Figure 26 A schematic diagram of the light pattern corresponding to the light directly emitted by light source 2 is shown. It can be clearly seen that the light pattern formed by the light directly emitted by light source 2 is located below the HH axis on the light distribution screen, that is, no unnecessary bright spots are formed above the light and dark cut-off line, and the light output effect is better.

[0111] As a specific embodiment of the present application, when the circuit board 3 is formed to be tilted downward from the front to the back, the circuit board 3 is observed from the direction opposite to the light emitting direction of the optical collimating element 4, as shown in FIG. Figure 8 As shown, there is a viewing angle difference d between the inflection points of the cut-off line structure, and the circuit board 3 is observed from a top view, as shown in FIG. Figure 10 As shown, the distance between the inflection points of the cut-off line structure is d′, and d and d′ satisfy the relationship d=d′×Sin(f), where f is the angle between the optical axis of the circuit board 3 and the optical collimating element 4 .

[0112] As a specific embodiment of the present application, at least a portion of the circuit board 3 is disposed in the light-emitting path of the focusing element 1, so that the circuit board 3 partially blocks light in the light-emitting path of the focusing element 1, thereby forming a primary light pattern with a bright / dark cutoff line. The primary light pattern is then subjected to a secondary imaging process by the optical collimating element 4 and projected to obtain an illumination light pattern. Most of the light in the light-emitting path of the focusing element 1 passes through the light-passing portion 301 and is transmitted to the optical collimating element 4. The remaining light blocked by the circuit board 3 is absorbed by the circuit board 3 or reflected to the optical collimating element 4, ultimately forming an illumination light pattern with a bright / dark cutoff line.

[0113] As a specific embodiment of the present application, the minimum distance between the light-dark cutoff line structure 302 and the light source 2 is 0.5-100 mm. Preferably, the minimum distance between the light-dark cutoff line structure 302 and the light source 2 is 3-60 mm. This arrangement ensures that light can pass through the light-transmitting portion 301 and be transmitted to the optical collimating element 4, and can form a light-dark cutoff line by blocking the light through the edge of the circuit board 3.

[0114] As another specific embodiment of the present application, the light source 2 includes a light emitting body and a driving device thereof. The light emitting body and the driving device thereof can be arranged on the same circuit board 3 or separately on different circuit boards 3, such as Figure 23 As shown, the first circuit board 31 is provided with the light source 2's illuminant, the second circuit board 32 is provided with the driving device of the light source 2, and a light-dark cutoff line structure 302 is provided on the edge of the second circuit board 32 near the light-passing portion. The second circuit board 32 is tilted downward from front to back, and the angle between the second circuit board 32 and the optical axis of the optical collimating element 4 is -45° to 45°, preferably 0° to 30°, so as to achieve higher light efficiency.

[0115] As a specific embodiment of the present application, the vehicle light module includes at least one of a main low-beam lighting module, an auxiliary low-beam lighting module, and a high-beam lighting module. Figure 11 and Figure 13 As shown, the high beam lighting module that forms the high beam lighting pattern includes a high beam light source 201, a high beam focusing element and an optical collimating element 4. The high beam focusing element can be a high beam reflector 1014. The focus P1 of the corresponding optical collimating element 4 is set on the reflecting surface of the high beam reflector 1014 or near the reflecting surface, preferably within a diameter range of 5 mm around the reflecting surface, so as to obtain the maximum lighting brightness. Figure 11 The focus arrangement of the optical collimating element 4 of the present application is shown: in the high-beam lighting module, the focus P1 is set on the reflective surface; in the main low-beam and auxiliary low-beam lighting modules, the focus P2 is set at the cutoff line structure 302. If the optical collimating element 4 of the present application is only single-directionally collimated, then the optical collimating element 4 of the present application only forms a focal line. In this case, it can be used to form the auxiliary low-beam lighting light pattern, and its focal line position is also located at the cutoff line structure 302.

[0116] As a preferred embodiment of the present application, Figure 11 and Figure 12 As shown, the main low-beam lighting module forming the main low-beam lighting pattern includes a main low-beam light source 202, a main low-beam focusing element, and an optical collimating element 4. The corresponding focus P2 of the optical collimating element 4 is set at the inflection point of the main low-beam light cut-off line structure 3021. When the main low-beam light cut-off line structure 3021 has a first inflection point 3021a and a second inflection point 3021b, the focus of the optical collimating element 4 is set at the first inflection point 3021a or the second inflection point 3021b, or is set near the first inflection point 3021a or the second inflection point 3021b, preferably within a 5mm diameter range around the inflection point. Figure 11 and Figure 12 As shown, the auxiliary low-beam lighting module that forms the auxiliary low-beam lighting pattern includes an auxiliary low-beam light source 203, an auxiliary low-beam focusing element, and an optical collimating element 4. The focus P3 or focal line PL of the corresponding optical collimating element 4 is set at or near the auxiliary low-beam light cut-off line structure 3022, preferably within a 5 mm diameter range around the auxiliary low-beam light cut-off line structure 3022. In the auxiliary low-beam lighting module, when the optical collimating element 4 is an optical element that only has a unidirectional collimating function for light, it can only form the focal line PL. For example, if the optical collimating element 4 has a vertical collimating function for light, it forms a horizontal focal line PL. The focal line PL can be set at or near the auxiliary low-beam light cut-off line structure 3022. The shape of the auxiliary low-beam light cut-off line structure 3022 can be set according to the shape of the focal line PL. For example, if the focal line PL is a straight line, the shape of the auxiliary low-beam light cut-off line structure 3022 can also be set to a straight line.

[0117] Preferably, in the auxiliary low-beam lighting module, the optical collimating element 4 is a cylindrical lens or a free-form surface lens, the auxiliary low-beam light cut-off line structure 3022 is a straight line or an arc, the cylindrical lens or the free-form surface lens has a focal line PL, and the focal line PL is set at the auxiliary low-beam light cut-off line structure 3022 or within a 5 mm diameter range around it.

[0118] In addition, the third aspect of the present application further provides a vehicle lamp, comprising a vehicle lamp module according to any one of the technical solutions of the second aspect.

[0119] For example, Figure 11 and Figure 15 As shown, on the light distribution screen, the main low beam lighting pattern formed by the headlight of the present application has the inflection point of the light-dark cutoff line corresponding to the first inflection point 3021a located on the HH axis, and the inflection point of the light-dark cutoff line corresponding to the second inflection point 3021b located on the VV axis.

[0120] For example, Figure 11 The second auxiliary low-beam lighting module on the left side shown in the figure has a focus P3 of the corresponding optical collimating element 4 that is set to the right of the corresponding auxiliary low-beam light-dark cut-off line structure 3022, and the auxiliary low-beam lighting light pattern formed is as follows: Figure 16 As shown in the figure, it is the auxiliary low beam lighting pattern located to the right on the light distribution screen; Figure 11 The first auxiliary low-beam lighting module on the right side shown in the figure has a corresponding focal line PL of the optical collimator 4 that is close in shape to the auxiliary low-beam light / dark cut-off line structure 3022, and the auxiliary low-beam lighting light pattern formed is as follows: Figure 17 The auxiliary low-beam lighting module can adjust the lighting direction by setting the focus or focal line of the optical collimator 4 to form different auxiliary low-beam lighting patterns.

[0121] And as Figure 18 As shown, it shows Figures 15 to 17 Schematic diagram of the superimposed light pattern of the main low-beam lighting pattern and the auxiliary low-beam lighting pattern.

[0122] In addition, if Figure 19 As shown, the vehicle lamp of the present application can also form a high beam lighting pattern, as well as Figure 20 As shown, the high beam and low beam lighting patterns are superimposed.

[0123] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, various simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the scope of protection of the present application.

[0124] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner unless there is any contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.

[0125] In addition, the various implementation methods of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.

Claims

1. A circuit board, characterized in that: A light-transmitting portion (301) is provided on the circuit board, and / or one side of the circuit board is formed as the light-transmitting portion (301), and a light-dark cutoff line structure (302) is formed on the edge of the circuit board connected to the light-transmitting portion.

2. The circuit board according to claim 1, wherein: The light / dark cutoff line structure (302) comprises a main near light / dark cutoff line structure (3021) and / or an auxiliary near light / dark cutoff line structure (3022); the main near light / dark cutoff line structure (3021) is formed as a plurality of line segments and / or arcs connected continuously; and the auxiliary near light / dark cutoff line structure (3022) is formed as a line segment or an arc.

3. The circuit board according to claim 1, wherein: The substrate of the circuit board is at least one of an aluminum plate, a copper plate, a ceramic substrate or a glass fiber reinforced plastic substrate.

4. The circuit board according to claim 1, wherein: The surface of the substrate of the circuit board is provided with a black or white coating.

5. The circuit board according to claim 2, wherein: The main near-bright light-dark cut-off line structure (3021) has at least one inflection point, which is a sharp corner or a rounded corner, and the rounded corner is preferably R0.5mm to R2mm.

6. The circuit board according to claim 1, wherein: A light shielding structure (9) is also provided on the circuit board (3), and the light shielding structure (9) forms a part of the light-dark cutoff line structure (302).

7. A vehicle light module, characterized in that: The optical optical system comprises a circuit board (3) according to any one of claims 1 to 6, a light source (2), and a focusing element (1) and an optical collimating element (4) arranged in sequence along the light transmission direction, wherein the light source (2) is arranged on the circuit board (3).

8. The vehicle light module according to claim 7, characterized in that: The light-collecting element (1) is a reflector (101), and the reflector (101) is arranged corresponding to the light source (2).

9. The vehicle light module according to claim 8, characterized in that: The reflector (101) includes at least one of a main low-beam reflector (1011), an auxiliary low-beam reflector (1012), and a high-beam reflector (1014).

10. The vehicle light module according to claim 9, characterized in that: The reflecting surface of the main low-beam reflector (1011) is one of a parabolic reflecting surface, a quasi-parabolic reflecting surface, an ellipsoidal reflecting surface or a quasi-ellipsoidal reflecting surface, and the reflecting surface of the auxiliary reflector (1012) is one of a parabolic reflecting surface, a quasi-parabolic reflecting surface, an ellipsoidal reflecting surface or a quasi-ellipsoidal reflecting surface.

11. The vehicle lamp module according to claim 10, characterized in that: The reflecting surface (1013) of the reflecting mirror (101) comprises a first reflecting surface (1013a) and a second reflecting surface (1013b); the light emitting direction of the first reflecting surface (1013a) is nearly parallel to the light emitting surface of the light source, and the light emitting direction is toward the optical collimating element.

12. The vehicle lamp module according to claim 9, characterized in that: The optical collimating element (4) is one of a lens, a reflector, a lens group, or a lens and reflector assembly.

13. The vehicle lamp module according to any one of claims 7 to 12, characterized in that: The circuit board (3) is formed in a direction opposite to the light emitting direction of the optical collimating element (4), the light source (2) is at least partially blocked by the circuit board (3), and the angle between the light source and the optical axis of the optical collimating element (4) is 0-30°.

14. The vehicle lamp module according to any one of claims 7 to 12, characterized in that: The minimum distance between the light / dark cutoff line structure (302) and the light source (2) is 0.5-100 mm.

15. The vehicle lamp module according to claim 14, characterized in that: The minimum distance between the light-dark cutoff line structure (302) and the light source (2) is 3-60 mm.

16. The vehicle lamp module according to any one of claims 7 to 12, characterized in that: The light source (2) comprises a light emitting body and a driving device thereof, the circuit board (3) comprises a first circuit board (31) and a second circuit board (32), the light emitting body is arranged on the first circuit board (31), the driving device is arranged on the second circuit board (32), and a light-dark cutoff line structure (302) is formed on the edge of the second circuit board (32) that is connected to the light-transmitting portion (301).

17. The vehicle lamp module according to any one of claims 7 to 12, characterized in that: The light source (2) includes at least one of a main low-beam light source (202), an auxiliary low-beam light source (203) and a high-beam light source (201); corresponding to the light source (2), the focusing element (1) includes at least one of a main low-beam focusing element, an auxiliary low-beam focusing element and a high-beam focusing element; the main low-beam light source (202), the main low-beam focusing element and the corresponding optical collimating element (4) form a main low-beam lighting light pattern; wherein the focus (P2) of the corresponding optical collimating element (4) is arranged at the inflection point of the main low-beam light-dark cut-off line structure (3021), or within a 5 mm diameter range around the inflection point; The auxiliary low-beam light source (203), the auxiliary low-beam focusing element and the corresponding optical collimating element (4) form an auxiliary low-beam lighting light pattern, wherein the focus (P3) or focal line (PL) of the corresponding optical collimating element (4) is arranged at the auxiliary low-beam light-dark cut-off line structure (3022) or within a 5 mm diameter range around the auxiliary low-beam light-dark cut-off line structure (3022).

18. The vehicle lamp module according to claim 17, characterized in that: The high-beam light source (201), the high-beam focusing element, and the corresponding optical collimating element (4) form a high-beam lighting light pattern; the high-beam focusing element is a high-beam reflector (1014); and the focus (P1) of the corresponding optical collimating element (4) is arranged on a reflection surface of the high-beam reflector (1014) or within a 5 mm diameter range around the reflection surface.

19. The vehicle lamp module according to claim 17, wherein: When the optical collimating element (4) used to form the auxiliary low-beam lighting pattern is an optical element having only a unidirectional collimating function for light, the optical collimating element (4) only forms a focal line (PL), and the focal line (PL) is arranged at the auxiliary low-beam light / dark cut-off line structure (3022) or within a 5 mm diameter range around it.

20. A vehicle lamp, characterized in that: The vehicle light module comprises the vehicle light module according to any one of claims 7 to 19.

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