Automobile lamp

Abstract

The utility model relates to the technical field of automobile lighting, in particular to an automobile lamp, which comprises a heat dissipation substrate, a floodlight source and a condensation light source which are arranged on the upper surface of the heat dissipation substrate, a light cutting mechanism used for realizing high and low beam function switching, and a light emitting lens, the light-emitting lens is provided with a first lens part used for emitting light of a floodlight source and a second lens part used for emitting light of a condensation light source, and the width of the light emitted by the first lens part is larger than that of the light emitted by the second lens part. The brightness of the light emitted from the first lens part is lower than that of the light emitted from the second lens part; the automobile lamp further comprises a heat dissipation structure used for conducting active heat dissipation and / or passive heat dissipation on the automobile lamp. The floodlight source and the condensation light source are both arranged on the upper surface of the heat dissipation substrate, heat conduction channels of the two light sources do not coincide, heat dissipation of the two light sources is facilitated, the light emitting efficiency is good, the brightness is high, and the heat dissipation effect of the whole lamp is good.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lighting, in particular to an automobile lamp. Background Art

[0002] The lighting effects of automobile lights are divided into two types: low beam and high beam. Low beam is mainly used for short-range wide-range lighting in the direction of vehicle travel. Its irradiation distance is generally about 30 to 40 meters. It is suitable for driving at night or in low visibility. The low beam has a low light angle and a short distance, so objects in front can be clearly distinguished. High beam is usually used for driving on roads without street lights such as highways and suburbs. Its light is parallel or nearly parallel, with high brightness and an irradiation distance of about 80 to 120 meters. The use of high beam can increase the sight height, thereby expanding the field of vision, especially when used on dark or other roads with low visibility. The effect is particularly significant.

[0003] The low beam and high beam of existing automobile lamps on the market are usually set on the same heat dissipation substrate and located on the upper and lower sides of the heat dissipation substrate. In order to maximize the light output efficiency of the lamp, the thickness of the heat dissipation substrate needs to be as thin as possible. However, this will cause the low beam light source and the high beam light source to be very close on the upper and lower sides of the heat dissipation substrate, and the projections on the heat dissipation substrate will be highly overlapped. Such a design makes the heat conduction channels of the low beam light source and the high beam light source basically overlap, and the heat dissipation effect of the light source is poor. In addition, the existing automobile lamp design has a poor heat circulation effect inside the lamp, resulting in poor heat dissipation effect of the entire lamp, which affects its service life. Utility Model Content

[0004] Based on this, the utility model aims to overcome at least one defect of the prior art and provide a car lamp, which has good light output efficiency, high brightness, good heat dissipation effect of the light source, and good heat dissipation effect of the entire lamp.

[0005] The technical solution is as follows:

[0006] A car lamp comprises a heat dissipation substrate, a floodlight source and a spotlight source arranged on the upper surface of the heat dissipation substrate, a light cutting mechanism for realizing high and low beam function switching, and a light emitting lens, wherein the light emitting lens is provided with a first lens portion for emitting light from the floodlight source and a second lens portion for emitting light from the spotlight source, the width of the light emitted through the first lens portion is greater than the width of the light emitted through the second lens portion, the brightness of the light emitted through the first lens portion is lower than the brightness of the light emitted through the second lens portion, and the first lens portion and the second lens portion are arranged along the width direction of the car lamp; and also comprises a heat dissipation structure for actively and / or passively dissipating heat for the car lamp.

[0007] Preferably, the floodlight source includes a first LED light-emitting body and a first light-collecting component for collecting light from the first LED light-emitting body, and the spotlight source includes a second LED light-emitting body and a second light-collecting component for collecting light from the second LED light-emitting body, the collection efficiency of the first light-collecting component for the first LED light-emitting body is not less than 80%, and the collection efficiency of the second light-collecting component for the second LED light-emitting body is not less than 80%.

[0008] Preferably, the first light receiving member is a first reflective cup, which covers the first LED light-emitting body and is a symmetrical structure relative to the first LED light-emitting body; the second light receiving member is a second reflective cup, which covers the second LED light-emitting body and is a symmetrical structure relative to the second LED light-emitting body; and the size of the first reflective cup is larger than that of the second reflective cup.

[0009] Preferably, the light cutting mechanism includes a cut-off line baffle and a driving member for driving the cut-off line baffle to change position, the cut-off line baffle includes a first light cutting piece corresponding to the floodlight source and a second light cutting piece corresponding to the spotlight source, the light-emitting surfaces of the first LED light-emitting body and the second LED light-emitting body are not higher than the vertices of the first light cutting piece and the second light cutting piece, and the first light cutting piece and the second light cutting piece can both cut the light into a low-beam light type.

[0010] Preferably, the cut-off line baffle is an asymmetric special-shaped structure, and in a direction parallel to the width of the vehicle lamp, the length of the first light cutting piece is greater than the length of the second light cutting piece.

[0011] Preferably, the first light cutting piece includes a first arc piece and a second arc piece, the second light cutting piece includes a third arc piece and a fourth arc piece, the width of the first arc piece is greater than that of the second arc piece, the width of the third arc piece is greater than that of the fourth arc piece, the width of the first arc piece and the third arc piece are the same, the width of the second arc piece and the fourth arc piece are the same, and the curvatures of the first arc piece, the second arc piece, the third arc piece and the fourth arc piece are the same; the first arc piece is close to the fourth arc piece or the two are connected, or the second arc piece is close to the third arc piece or the two are connected; the first arc piece and the second arc piece are integrally formed, and / or the third arc piece and the fourth arc piece are integrally formed, and / or the first light cutting piece and the second light cutting piece are integrally formed.

[0012] Preferably, the distance between the first LED light-emitting body and the light-emitting lens is smaller than the distance between the second LED light-emitting body and the light-emitting lens.

[0013] Preferably, the distance between the optical center of the first LED light emitting body and the optical axis of the first lens portion is 0 to 4 mm, and the distance between the optical center of the second LED light emitting body and the optical axis of the second lens portion is 0 to 4 mm.

[0014] Preferably, the heat dissipation structure includes a fan, which is arranged at the tail of the automobile light or the bottom of the automobile light, the tail of the automobile light is the side away from the light output lens, and the bottom of the automobile light is the side away from the upper surface of the heat dissipation substrate.

[0015] Preferably, the first LED light-emitting body is installed on the first light source copper plate, and the second LED light-emitting body is installed on the second light source copper plate; the first light source copper plate and the second light source copper plate are both installed on the upper surface of the heat dissipation substrate; the heat dissipation structure also includes a concentrated flood light source heat dissipation component, and the concentrated flood light source heat dissipation component is in contact with the upper surfaces of the first light source copper plate and the second light source copper plate.

[0016] Further preferably, the concentrated flood light source heat dissipation assembly is a heat pipe assembly, which includes a heat pipe and a connector, and the connector is provided with a groove for accommodating at least a portion of the heat pipe; the first light source copper plate and the second light source copper plate are arranged below the connector and in contact with the connector and / or the heat pipe.

[0017] The concentrated flood light source heat dissipation assembly also includes heat dissipation fins connected to the heat pipe, the fan is arranged at the rear of the automobile lamp, and the heat dissipation fins are arranged close to the fan and are located between the fan and the first light source copper plate and / or between the fan and the second light source copper plate.

[0018] Preferably, the automobile lamp further comprises a fill light source, and the light output lens is provided with a third lens portion for emitting the fill light source.

[0019] Preferably, there is one third lens portion, the third lens portion is located at the top of the light output lens, and the first lens portion and the second lens portion are symmetrically arranged along the third lens portion; or there are two third lens portions, the two third lens portions are respectively located above the first lens portion and the second lens portion; or the number of the third lens portions is three or more.

[0020] Preferably, the first lens portion and the second lens portion are of the same size, and the equivalent diameters of the first lens portion and the second lens portion are 40 to 50 mm; and / or the equivalent diameter of the third lens portion is 40 to 50 mm, and the number of the third lens portions is 2.

[0021] Preferably, a plane parallel to the surface of the heat dissipation substrate and passing through the vertices of the first lens portion and the second lens portion is taken as a reference plane, and the area of ​​the curved surface of the first lens portion and the second lens portion below the reference plane is larger than the area of ​​the curved surface above the reference plane.

[0022] Preferably, the heat dissipation structure also includes a heat dissipation fan inclined to the upper surface of the heat dissipation substrate and located above the floodlight source and the spotlight source, and a heat sink arranged above the floodlight source and the spotlight source, the heat dissipation fan is arranged in the heat sink, the fill light source is arranged on the heat sink, and the fill light source is an LED light source and / or a laser light source.

[0023] Preferably, the fill light source is a laser light source, the number of the third lens portions is 2, and the laser light source includes: a laser that emits a laser beam; a beam splitter element arranged on the path of the laser beam and used to split the laser beam into a first laser and a second laser; a first wavelength conversion element arranged on the path of the first laser, the first wavelength conversion element being used to convert the first laser at least partially into a converted light; a second wavelength conversion element arranged on the path of the second laser, the second wavelength conversion element being used to convert the second laser at least partially into a converted light; and a first lens for collecting light emitted after being acted upon by the first wavelength conversion element and a second lens for collecting light emitted after being acted upon by the second wavelength conversion element; the first lens and one of the third lens portions are coaxially arranged, and the second lens and the other third lens portion are coaxially arranged.

[0024] Compared with the prior art, the beneficial effects of the utility model are as follows: the floodlight source and the spotlight source are both arranged on the upper surface of the heat dissipation substrate, the heat conduction channels of the two light sources do not overlap, the thickness of the heat dissipation substrate can be increased, which is beneficial to the heat dissipation of the two light sources, the floodlight source emits light in a wide angle range through the first lens portion, and the spotlight source emits light with high brightness through the second lens portion, most of the light from the floodlight source and the spotlight source can be fully utilized, the light blocking mechanism for the floodlight source and the spotlight source is very small, the obtained light irradiation range is wide, the brightness is high, and the light emitting efficiency of the entire automobile lamp is high, and a heat dissipation structure for active heat dissipation and / or passive heat dissipation is provided for the automobile lamp, so that the heat in the lamp can circulate, the heat dissipation effect of the entire lamp is good, and the service life is long. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an exploded view of the automobile lamp according to Embodiment 1 of the present utility model.

[0026] Figure 2 This is a front view of the automobile lamp according to Embodiment 1 of the present utility model.

[0027] Figure 3 for Figure 2 Cross-section at medium AA angle.

[0028] Figure 4 This is a partial exploded view of the automobile lamp according to Example 1 of the utility model.

[0029] Figure 5This is a three-dimensional diagram of the automobile lamp according to Embodiment 1 of the present utility model.

[0030] Figure 6 This is a schematic diagram of heat conduction of the light source of the automobile lamp in Example 1 of the utility model.

[0031] Figure 7 This is a structural schematic diagram of the heat dissipation component of the concentrated flood light source in Example 1 of the utility model.

[0032] Figure 8 This is another structural schematic diagram of the heat dissipation assembly of the floodlight source in Example 1 of the utility model.

[0033] Fig. 9 It is a schematic diagram of assembling the heat pipe assembly with the first light source copper plate and the second light source copper plate.

[0034] Fig.10 It is an exploded view of the heat pipe assembly, the first light source copper plate, and the second light source copper plate.

[0035] Fig.11 A schematic diagram of the structure of the heat pipe assembly from another perspective.

[0036] Fig.12 for Fig.11 Exploded diagram.

[0037] Fig.13 Schematic diagram of the structure of the light cutting mechanism, wherein the circle represented by A is an asymmetrically designed special-shaped structure.

[0038] Fig.14 Schematic diagram of the light output lens structure.

[0039] Fig.15 It is a configuration solution for the existing LED light emitters and reflective cups in the original equipment market.

[0040] Fig.16 This is a partial exploded view of the automobile lamp according to Embodiment 2 of the present utility model.

[0041] Description of reference numerals:

[0042] 1. Heat dissipation substrate; 21. First reflective cup; 22. First LED luminous body; 31. Second reflective cup; 32. Second LED luminous body; 4. Light cutting mechanism; 41. Solenoid valve; 42. Cut-off line baffle; 421. First light cutting piece; 4211. First arc piece; 4212. Second arc piece; 422. Second light cutting piece; 4221. Third arc piece; 4222. Fourth arc piece; 423. Vertex; 5. Light output lens; 51. First lens portion; 511. Lower curved surface of first lens portion; 512. Upper curved surface of first lens portion; 52. Second lens portion; 521. Lower curved surface of second lens portion; 522. Upper curved surface of second lens portion; 53. Third lens portion; 61. First light source copper plate; 62. Second light source copper plate; 7. Heat dissipation fan; 8 , heat dissipation assembly of the concentrated flood light source; 81, heat pipe assembly; 811, heat pipe; 812, connector; 8121, groove; 8122, bump; 82, cooling fin; 9, heat sink; 10, fill light source; 11, fan; 12, fan cover; 13, drive board; 14, lower cover; 15, lens bracket; 16, mounting bracket; 171, first light source; 172, second light source; 173, third light source; 181, first cup body; 182, second cup body; 183, third cup body; 101, laser; 102, spectrometer; 103, first wavelength conversion element; 104, second wavelength conversion element; 105, first lens; 106, second lens; 107, third lens; 108, diffuser; 109, reflector. DETAILED DESCRIPTION

[0043] The drawings of the present invention are only used for illustrative purposes and cannot be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0044] Example 1

[0045] like Figures 1 to 6 As shown, this embodiment provides an automobile lamp, including a heat dissipation substrate 1, a floodlight source and a spotlight source arranged on the upper surface of the heat dissipation substrate 1, a light cutting mechanism 4 for realizing high and low beam function switching, and a light emitting lens 5, wherein the light emitting lens 5 is provided with a first lens portion 51 for emitting light from the floodlight source and a second lens portion 52 for emitting light from the spotlight source, the width of the light emitted through the first lens portion 51 is greater than the width of the light emitted through the second lens portion 52, the brightness of the light emitted through the first lens portion 51 is lower than the brightness of the light emitted through the second lens portion 52, and the first lens portion 51 and the second lens portion 52 are arranged along the width direction of the automobile lamp; and also includes a heat dissipation structure for actively and / or passively dissipating heat for the automobile lamp.

[0046] To make the description clearer, the length, width and height directions of the car lights are marked, such as Figure 1 As shown, the direction parallel to the optical axis of the light-emitting lens 5 (the optical axis of the light-emitting lens 5 is the line passing through the center point and the focus of the light-emitting lens 5) is the length direction, represented by x; the direction parallel to the surface of the heat dissipation substrate 1 and perpendicular to the length direction is the width direction, represented by y; the direction perpendicular to x and y is the height direction, represented by z.

[0047] The brightness of the emitted light mentioned in the present application refers to the illumination of the emitted light, and the width of the emitted light refers to the distance between the left and right sides of the light emitting area when the light is emitted forward.

[0048] When a low beam effect is to be achieved, the light cutting mechanism 4 is located on the light path to block the light and achieve a low beam lighting effect with a clear cut-off line; when a high beam effect is to be achieved, the light cutting mechanism 4 is moved out of the light path of the floodlight source and the spotlight source to achieve a high beam lighting effect.

[0049] Compared with the existing low beam and high beam, which are respectively arranged on the same heat dissipation substrate and located on the upper and lower sides of the heat dissipation substrate, in this embodiment, the floodlight source and the spotlight source are both installed on the upper surface of the heat dissipation substrate 1, and the heat dissipation substrate can be made thicker, which is conducive to the heat dissipation of the two light sources. In the existing headlights, the light of the low beam light source is emitted through the lower half of the light-emitting lens, and the light of the high beam light source is emitted through the upper half of the light-emitting lens. When the low beam lighting is realized, most of the light of the high beam light source is blocked, and the brightness of the headlight is relatively low when the low beam lighting is realized. However, the technical solution of the present application, when the low beam lighting is performed, not only the utilization rate of the floodlight source is high, but also the utilization rate of the spotlight source is very high. Only a small part of the light of the floodlight source and the spotlight source is blocked by the light cutting mechanism 4 (when the low beam lighting is realized, the role of the light cutting mechanism 4 is only to block a small part of the stray light of the floodlight source and the spotlight source to obtain a low beam light type with a clear cutoff line). The floodlight source emits light of a wide angle range through the first lens portion 51, and the spotlight source emits light of high brightness through the second lens portion 52, so that the emitted light has a wide irradiation range and high brightness. In addition, since the floodlight source and the spotlight source emit light respectively through the first lens portion 51 and the second lens portion 52, the light emitted by the floodlight source and the spotlight source after the light emission lens 5 is acted on can be symmetrical along the optical axis of the light emission lens 5, avoiding the occurrence of eccentric or asymmetrical objects of the light emission effect, and ensuring the light emission effect. And since the first lens portion 51 and the second lens portion 52 are both arranged on the light emission lens 5, the size of the first lens portion 51 and the second lens portion 52 is smaller than the size of the entire light emission lens 5, so that the floodlight source and the spotlight source can be designed to be closer to the light emission lens 5, thereby shortening the length of the entire automobile headlight or reserving more space for the headlight for heat dissipation design at the same length. The heat dissipation structure set as the active heat dissipation and / or passive heat dissipation of the automobile headlight can make the heat in the headlight circulate, the heat dissipation effect of the whole lamp is good, and the service life is long.

[0050] Furthermore, the floodlight source includes a first LED light emitter 22 and a first light receiving member for collecting light from the first LED light emitter 22, and the spotlight source includes a second LED light emitter 32 and a second light receiving member for collecting light from the second LED light emitter, the first light receiving member has a collection efficiency of not less than 80% for the first LED light emitter 22, and the second light receiving member has a collection efficiency of not less than 80% for the second LED light emitter 32. Most of the existing headlights in the aftermarket have the high and low beam light sources respectively arranged on the lower and upper surfaces of the heat dissipation substrate, and a small number of headlights have the light-emitting surfaces of the high and low beam light sources facing upward, but the mounting surface of the high beam light source is lower than the mounting surface of the low beam light source. The former has always had problems with heat dissipation and light output efficiency due to the thickness of the heat dissipation substrate, and the latter has low light output efficiency because the high beam reflector cannot block the low beam light. Some headlights in the OEM market use multiple light sources on the upper surface of the heat dissipation substrate as low-beam light sources. However, the light collection efficiency of the light collecting structure is very low, the light loss is large, the headlight brightness is low, and the light sources must usually be set at 3 or more positions. Fig.15 The figure shows one of the configuration schemes of LED illuminants and reflective cups in the existing front-end market. The substrate includes a first illuminant 171, a second illuminant 172 and a third illuminant 173. An integrally formed three-cup reflective cup is arranged above the three illuminants. The three-cup reflective cup includes a first cup 181, a second cup 182 and a third cup 183. The first cup 181 is located above the first illuminant 171, the second cup 182 is located above the second illuminant 172, and the third cup 183 is located above the third illuminant 173. The reflective cup of this structure has a relatively low light collection efficiency. The collection efficiency of the first cup 181 to the first illuminant 171, the second cup 182 to the second illuminant 172, and the third cup 183 to the third illuminant 173 is less than 70%. The effective light collection efficiency of the entire three-cup structure light-emitting board to the three illuminants is less than 70%. In addition, this method also requires the configuration of a high-beam light source under the substrate to better meet the requirements of low-beam lighting and high-beam lighting. The collection efficiency of the first light receiving element and the second light receiving element of the technical solution is not less than 80%, and can even reach not less than 90%, and the collection efficiency is high.

[0051] More specifically, if Figure 1As shown, the first light receiving member is a first reflective cup 21, which covers the first LED luminous body 22 and is a symmetrical structure relative to the first LED luminous body 22, and the second light receiving member is a second reflective cup 31, which covers the second LED luminous body 22 and is a symmetrical structure relative to the second LED luminous body 32, and the size of the first reflective cup 21 is larger than the size of the second reflective cup 31. As mentioned above, some of the existing front-end markets have a method of setting multiple light sources on the upper surface of the heat dissipation substrate, but the light collection efficiency of the light receiving structure for the luminous body is very low, the light loss is large, the brightness of the headlight is low, and the luminous body must usually be set at 3 or more positions; in this embodiment, the luminous body is set at 2 positions, which reduces the heat generation of the headlight from the number of light sources, and at the same time, with the reflective cup in a symmetrical structure relative to the LED luminous body, the reflective cup has a high collection efficiency for the LED luminous body. Further, the first reflective cup 21 includes an upper plane and a side curved surface with an opening facing the light output lens 51, and the side curved surface is connected to the heat dissipation substrate 1 except for the opening position. This type of reflector is a standard reflector on the market, also known as an ellipsoid reflector. Since no light leaks except at the opening, the collection efficiency of the LED light source is very high, up to 90%. The shape of the second reflector 31 is similar to that of the ellipsoid reflector. Fig.15 With this design, the light emitted by the LED light source can be well collected. Moreover, the size of the first reflector cup that collects the low beam light is designed to be larger than the size of the second reflector cup that collects the high beam light, which can simultaneously achieve focusing and flooding, making the light irradiation range wider, the brightness higher, and reducing the amount of light loss.

[0052] Among them, Fig.13 As shown, the light cutting mechanism 4 includes a cut-off baffle 42 and a driving member for driving the cut-off baffle 42 to change its position. In this embodiment, the driving member is a solenoid valve 41. The cut-off baffle 42 includes a first light cutting piece 421 corresponding to the floodlight source and a second light cutting piece 422 corresponding to the spotlight source. The light-emitting surfaces of the first LED illuminator 22 and the second LED illuminator 32 are not higher than the apex 423 of the first light cutting piece 421 and the second light cutting piece 422. The first light cutting piece 421 and the second light cutting piece 422 can both cut the light into a low-beam light type. The light-emitting surfaces of the first LED illuminator 22 and the second LED illuminator 32 are set to be not higher than the apex 423 of the first light cutting piece 421 and the second light cutting piece 422, so that only a very small part of the light of the spotlight source and the floodlight source is blocked by the light cutting mechanism 4, and the light can basically be emitted from all the light-emitting surfaces of the first lens portion 51 and the second lens portion 52, and the light-emitting efficiency is high. The apex 423 of the first light cutting piece 421 and the second light cutting piece 422 described in the present invention refers to the highest point at the transition of the light cutting pieces.

[0053] In addition, the cut-off baffle 42 is an asymmetric special-shaped structure, and in the direction parallel to the width of the headlight, the length of the first light-cutting piece 421 is greater than the length of the second light-cutting piece 422. Further preferably, the weight difference between the first light-cutting piece 421 and the second light-cutting piece 422 is less than 10%. Fig.13 As shown, the cut-off line baffle 42 is an asymmetric special-shaped structure. The cut-off line baffle 42 needs to be connected to the electromagnetic rod of the electromagnetic valve 41. The connection area is as shown in FIG. Fig.13 As shown in the circular area A, this embodiment adopts an asymmetric special-shaped structure design, which can reserve space for the connecting part on the one hand, ensure the overall balance on the other hand, and better balance the cost and light effect on the other hand. From an optical point of view, since focusing requires the light path of the spotlight to be more concentrated, the area that needs to be shielded is smaller, so the length of the second light-cutting piece 422 can be reduced. However, if the size and weight difference on both sides of the cut-off baffle 42 is large, it is difficult to better ensure the balance of the cut-off baffle 42, so the end of the second light-cutting piece 422 close to the electromagnet rod can be designed with a special shape. This technical solution can meet the balance and assemblability at the same time through this special-shaped design, and the light effect is not affected.

[0054] In this embodiment, the first light cutting piece 421 includes a first arc piece 4211 and a second arc piece 4212, the second light cutting piece 422 includes a third arc piece 4221 and a fourth arc piece 4222, the width of the first arc piece 4211 is greater than the width of the second arc piece 4212, the width of the third arc piece 4221 is greater than the width of the fourth arc piece 4222, the first arc piece 4211 and the third arc piece 4221 are the same width, the second arc piece 4212 and the fourth arc piece 4222 are the same width, and the first arc piece 4211, the second arc piece 4212, the third arc piece 4221, and the fourth arc piece 4222 have the same curvature. More specifically, the first arc piece 4211 is close to the fourth arc piece 4222 or the two are connected, or the second arc piece 4212 is close to the third arc piece 4221 or the two are connected. This embodiment is configured so that the light pattern after the two light-cutting pieces are cut is symmetrical, which is beneficial to improving the light-emitting effect. More specifically, in this embodiment, the first arc piece 4211 is arranged close to the fourth arc piece 4222, that is, the second arc piece 4212 and the third arc piece 4221 are located on both sides of the cut-off baffle 42, and the first arc piece 4211 and the fourth arc piece 4222 are located in the middle of the cut-off baffle. This design is more suitable for the left-hand drive mode in China. Furthermore, the first arc piece 4211 and the second arc piece 4212 are integrally formed, the third arc piece 4221 and the fourth arc piece 4222 are integrally formed, and the first light-cutting piece 421 and the second light-cutting piece 422 are integrally formed. The one-piece molding design facilitates the manufacture, installation and disassembly of components.

[0055] Furthermore, the distance between the first LED illuminator 22 and the light-emitting lens 5 is smaller than the distance between the second LED illuminator 32 and the light-emitting lens 5. This arrangement allows the two LED illuminators to be staggered in the length direction of the lamp, which is beneficial to the heat dissipation of the light source. In addition, it can also better achieve the effects of spotlighting and floodlighting.

[0056] In this embodiment, the distance between the optical center of the first LED illuminant 22 and the optical axis of the first lens portion 51 is 0 to 4 mm, and the distance between the optical center of the second LED illuminant 32 and the optical axis of the second lens portion 52 is 0 to 4 mm. The optical center of the first LED illuminant 22 and the optical center of the second LED illuminant 32 are located on or near the optical axis of the first lens portion 51 and the second lens portion 52, respectively, which can ensure good heat dissipation effect of the spotlight source and the floodlight source while taking into account the light collection efficiency of the floodlight source and the spotlight source, and the light output brightness is high. The optical center of the LED illuminant in this embodiment refers to the optical center of the LED light-emitting surface. The LED illuminant is composed of an LED chip and a fluorescent layer covering the LED chip, and the surface of the fluorescent layer is the LED light-emitting surface.

[0057] In addition, the heat dissipation structure includes a fan 11, and the fan 11 is arranged at the tail of the automobile lamp or the bottom of the automobile lamp, the tail of the automobile lamp is the side away from the light-emitting lens 5, and the bottom of the automobile lamp is the side away from the upper surface of the heat dissipation substrate 1. In this embodiment, in order to protect the fan 11, a fan cover 12 is provided to prevent dust from entering the interior of the lamp while increasing the aesthetics.

[0058] Among them, the first LED illuminant 22 is mounted on the first light source copper plate 61, and the second LED illuminant 32 is mounted on the second light source copper plate 62; the first light source copper plate 61 and the second light source copper plate 62 are both mounted on the upper surface of the heat dissipation substrate 1; the heat dissipation structure also includes a concentrated flood light source heat dissipation component 8, and the concentrated flood light source heat dissipation component 8 is in contact with the upper surface of the first light source copper plate 61 and the second light source copper plate 62. The heat dissipation substrate 1 is the main bearing mechanism and also has a heat dissipation function. The first LED illuminant 22 and the second LED illuminant 32 are respectively mounted on the first light source copper plate 61 and the second light source copper plate 62, and the first light source copper plate 61 and the second light source copper plate 62 are mounted on the upper surface of the heat dissipation substrate 1, and the heat is quickly conducted through the heat dissipation substrate 1, which is conducive to the heat circulation and discharge outside the headlight. In the prior art, since the low beam light source and the high beam light source are respectively located on the upper and lower sides of the heat dissipation substrate, it is impossible to design the concentrated flood light source heat dissipation component 8 to be directly connected to the copper plates of the low beam light source and the high beam light source at the same time. In this embodiment, since the spotlight source and the floodlight source are both on the upper surface of the heat dissipation substrate 1, that is, located on the same side of the heat dissipation substrate 1, the spotlight heat dissipation assembly 8 can directly contact the first light source copper plate 61 and the second light source copper plate 62, and the light source heat dissipation efficiency is good.

[0059] Furthermore, the concentrated flood light source heat dissipation component 8 is a heat pipe component 81, such as Figure 9-12 As shown, the heat pipe assembly 81 includes a heat pipe 811 and a connector 812, and the connector 812 is provided with a groove 8121 for accommodating at least a portion of the heat pipe 811; the first light source copper plate 61 and the second light source copper plate 62 are arranged below the connector 812 and contact the connector 812 and / or the heat pipe 811. The heat pipe 811 is welded in the groove 8121, and the welding method can make the heat pipe 811 and the connector 812 tightly connected together. The design of the groove 8121 can also make the heat pipe 811 and the connector 812 contact the first light source copper plate 61 and the second light source copper plate 62. The heat pipe has the characteristics of high thermal conductivity and large surface area, and can quickly absorb and conduct heat. The heat pipe 811 directly contacts the first light source copper plate 61 and the second light source copper plate 62, and can directly conduct heat, so that the heat dissipation efficiency is higher. The design of the connector 812 can increase the contact area between the heat pipe assembly 81 and the first light source copper plate 61 and the second light source copper plate 62, and improve the heat dissipation effect by increasing the heat conduction surface.

[0060] In this embodiment, the concentrated flood light source heat dissipation assembly 8 includes a heat pipe assembly 81 and a heat dissipation fin 82 connected to the heat pipe assembly 81. By welding the heat pipe assembly 81 to the heat dissipation fin 82, the heat dissipation surface area of ​​the concentrated flood light source heat dissipation assembly 8 is larger and the heat dissipation effect is better. The heat dissipation fin 82 includes a variety of design methods, such as Figure 7 The heat sink fin 82 is an integrally formed metal part with a plurality of spaced metal sheets in the middle. Figure 8 The heat sink fin 82 is shown to be a metal component assembled by splicing a number of metal sheets.

[0061] In this embodiment, the fan 11 is arranged at the rear of the automobile lamp, and the heat dissipation fins are arranged close to the fan 11 and between the fan 11 and the first light source copper plate 61 and / or between the fan 11 and the second light source copper plate 62. The combination of active heat dissipation and passive heat dissipation can further improve the heat dissipation effect of the light source and the entire lamp.

[0062] Furthermore, the automobile headlight further comprises a fill light source 10, and the light output lens 5 is provided with a third lens portion 53 for outputting the fill light source 10. The provision of the fill light source 10 can further achieve a light output effect with higher brightness and longer distance, increase the brightness of the headlight, and improve the utilization rate of the entire light output lens.

[0063] In this embodiment, there are two third lens portions 53, and the two third lens portions 53 are respectively located above the first lens portion 51 and the second lens portion 52. In other embodiments, there may be one third lens portion 53, and the third lens portion 53 is located at the top of the light-emitting lens 3, and the first lens portion 51 and the second lens portion 52 are symmetrically arranged along the third lens portion 53. In other embodiments, there may be three or more light-emitting lens portions 53.

[0064] In this embodiment, the first lens portion 51 and the second lens portion 52 are of the same size, and the equivalent diameters of the first lens portion 51 and the second lens portion 52 are 40 to 50 mm; the equivalent diameter of the third lens portion 53 is 40 to 50 mm. Furthermore, in this embodiment, the ratio of the equivalent diameter of the first lens portion 51, the equivalent diameter of the second lens portion 52 and the diameter of the light incident surface of the light output lens 5 is (0.55 to 0.7):1. The focal length of the small lenses such as the first lens portion 51 and the second lens portion 52 is shorter, the positions of the floodlight source and the spotlight source can be closer to the light output lens 5, the overall length of the headlight is shorter, the volume of the headlight is small, the structure is more compact, and the weight is lighter. The equivalent diameter described in the utility model refers to: the diameter of a complete spherical lens or aspherical lens under the condition of equal side thickness.

[0065] Furthermore, taking the plane parallel to the surface of the heat dissipation substrate and passing through the vertices of the first lens portion 51 and the second lens portion 52 as the reference plane, the area of ​​the curved surface of the first lens portion 51 and the second lens portion 52 below the reference plane is greater than the area of ​​the curved surface above the reference plane. Fig.14 As shown, that is, the plane where the vertices of the first lens portion 51 and the second lens portion 52 are located is used as the reference plane, the lower part is the lower curved surface 511 of the first lens portion, the lower curved surface 521 of the second lens portion, and the upper part is the upper curved surface 512 of the first lens portion, the upper curved surface 522 of the second lens portion, the area of ​​the lower curved surface 511 of the first lens portion is greater than the area of ​​the upper curved surface 512 of the first lens portion, and the area of ​​the lower curved surface 521 of the second lens portion is greater than the area of ​​the upper curved surface 522 of the second lens portion. With such a design, the light emitting efficiency of the spotlight source and the floodlight source is higher. In this embodiment, the vertices of the first lens portion 51 and the second lens portion 52 refer to the convex points of the light emitting surfaces of the first lens portion 51 and the second lens portion 52 located at the most edge position in the length direction of the automobile headlight. Further, in this embodiment, the vertices of the first lens portion 51 and the first lens portion 52 are located in the lower half of the light emitting lens 5.

[0066] Furthermore, the heat dissipation structure also includes a heat dissipation fan 7 which is inclined to the upper surface of the heat dissipation substrate 1 and is located above the floodlight source and the spotlight source, and a heat sink 9 which is arranged above the floodlight source and the spotlight source. The heat dissipation fan 7 is arranged in the heat sink 9, and the fill light source 10 is arranged on the heat sink 9, so that the heat dissipation effect of the fill light source 10 is good. The fill light source 10 is an LED light source and / or a laser light source. The laser light source and the LED light source can be conventional structures on the market, such as a laser light source including a housing, a laser arranged in the housing, a focusing lens and a phosphor sheet arranged in sequence along the laser light path of the laser. The LED light source includes an LED illuminant.

[0067] In this embodiment, the heat dissipation fan 7 is arranged facing the curved surface of the first reflective cup 21 and the second reflective cup 31. The heat dissipation fan 7 is arranged obliquely to the heat dissipation substrate 1 and facing the curved surface of the first reflective cup 21 and the second reflective cup 31, so that the internal hot air flow can be discharged more quickly; on the other hand, the light cutting mechanism 4 includes a solenoid valve 41, which also generates heat. The heat dissipation fan 7 is designed in this way and can be arranged close to the light cutting mechanism 4, so that the local heat of the light cutting mechanism 4 can be discharged more effectively, and the heat dissipation effect is good.

[0068] In this embodiment, Figure 11-Figure 12 As shown, a protrusion 8122 is provided on the left and right sides of the connecting member 812, and the two protrusions 8122 are respectively located on the upper and lower sides of the connecting member 812; the first light source copper plate 61 and the second light source copper plate 62 are respectively connected to a protrusion 8122. The protrusion 8122 is provided with a screw hole, and the heat pipe assembly 81 is locked on the heat dissipation substrate 1 through the screw hole. The setting of the protrusion 8122 facilitates the installation of the heat pipe assembly 81, and the central symmetric design of the protrusion 8122 makes the center of gravity of the connecting member 812 at its center position, which is convenient for ensuring the balance of the car light. On the other hand, since the first LED light emitter 22 and the second LED light emitter 32 are at different distances from the light output lens 5, such a design can enable the heat pipe assembly 81 to better dissipate heat for the first LED light emitter 22 and the second LED light emitter 32.

[0069] Furthermore, the heat sink 9 is a metal shell structure that matches the placement position of the cooling fan 7, which can prevent the internal structure of the headlight from being exposed, dust and other impurities from entering the headlight, and also improve the aesthetics of the headlight; the volume and surface area of ​​the heat sink 9 are much larger than the heat sinks currently on the market, and the cooling fan 7 and the heat sink 9 cooperate to achieve a significant improvement in the heat dissipation effect.

[0070] like Figure 3As shown, in this embodiment, the fan 11 is used to blow air into the headlight, and the heat dissipation fan 7 is used to exhaust air to the outside of the headlight. Due to the presence of the first reflector 21 and the second reflector 31 inside the headlight, the position and direction of the airflow from the fan 11 will change after it is blown into the reflector. The heat dissipation fan 7 is arranged obliquely to the heat dissipation substrate 1 and directly facing the curved surface of the reflector, so that the hot air flow inside the headlight can be exhausted more quickly. Figure 6 As shown, the heat of the first LED light-emitting body 21 and the second LED light-emitting body 32 in the car lamp is transferred to the first light source copper plate 61 and the second light source copper plate 62, and then transferred to the floodlight source heat dissipation assembly 8 and the heat dissipation substrate 1 through the heat pipe 811 and the connector 812. With the combined effect of the fan 11 blowing air into the car lamp, the heat dissipation fan 7 exhausting air outwards, and the heat sink 9, the heat circulation in the car lamp is accelerated, the heat is quickly discharged from the outside of the car lamp, and the heat dissipation effect is good.

[0071] In this embodiment, a driving plate 13 for driving the floodlight source and the spotlight source is also included. A lower cover plate 14 is provided below the heat dissipation substrate 1 to achieve the encapsulation of the bottom of the lamp. In order to facilitate the installation of the light-emitting lens 5, a lens bracket 15 is provided; in order to facilitate the installation of various components of the lamp, a mounting bracket 16 is provided, and the lens bracket 15 is mounted on the mounting bracket 16. Furthermore, the mounting bracket 16 is perpendicular to the heat dissipation substrate 1, and the mounting bracket 16 can be fixed to the heat dissipation substrate 1 by means of screws or the like, or the mounting bracket 16 and the heat dissipation substrate 1 can be integrally formed.

[0072] Example 2

[0073] The vehicle lamp of the second embodiment is substantially the same as that of the first embodiment, except that the fill light source of the second embodiment is Fig.16As shown, the fill light source of this embodiment is a laser light source, the number of the third lens parts is 2, and the laser light source includes: a laser 101 that emits a laser beam; a beam splitter 102 arranged on the path of the laser beam for dividing the laser beam into a first laser and a second laser; a first wavelength conversion element 103 arranged on the path of the first laser, the first wavelength conversion element 103 is used to convert the first laser at least partially into a converted light; a second wavelength conversion element 104 arranged on the path of the second laser, the second wavelength conversion element 104 is used to convert the second laser at least partially into a converted light; and a first lens 105 for collecting light emitted after being acted on by the first wavelength conversion element 103 and a second lens 106 for collecting light emitted after being acted on by the second wavelength conversion element 104; the first lens 105 and one of the third lens parts 53 are coaxially arranged, and the second lens 106 and the other third lens part 53 are coaxially arranged. The laser beam emitted by the laser light source of the second embodiment is divided into two laser beams under the action of the beam splitter 102, namely the first laser beam and the second laser beam. After the first wavelength conversion element 103 is acted upon, at least part of the first laser beam is converted into the converted laser beam, and the unconverted laser beam and the converted laser beam are combined to form the illumination light, which is collected by the first lens 105 and then emitted through one of the third lens portions 53 to form the high-beam illumination. After the second wavelength conversion element 104 is acted upon, at least part of the second laser beam is converted into the converted laser beam, and the unconverted laser beam and the converted laser beam are combined to form the illumination light, which is collected by the second lens 106 and then emitted through another third lens portion 53 to form the high-beam illumination. The beam splitter 102 is designed in the present embodiment so that one laser can emit light from two third lens portions, thereby improving the light emission efficiency of the laser. Specifically, the beam splitter 102 can be a polarization beam splitter or a beam splitter filter. More specifically, the first wavelength conversion element 103 and the second wavelength conversion element 104 are both phosphor sheets. Furthermore, a diffuser 108 is provided on the optical path of the first laser and the second laser, and the diffuser 108 is used to homogenize the light spot irradiated on the phosphor sheet to avoid the burning phenomenon. More specifically, a third lens 107 is provided between the diffuser 108 and the phosphor sheet to focus the first laser and the second laser onto the phosphor sheet. Fig.16 As shown, a reflector 109 is further provided on the optical path of the second laser. The reflector 109 is used to change the propagation mode of the second laser so that the second laser is parallel to the first laser after passing through the reflector 109.

[0074] The other structures and working principles of the second embodiment are basically the same as those of the first embodiment and will not be described in detail here.

[0075] Obviously, the above embodiments of the utility model are only examples for clearly explaining the technical solution of the utility model, and are not intended to limit the specific implementation methods of the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the utility model shall be included in the protection scope of the claims of the utility model.

Claims

1. A car lamp, characterized in that: The invention comprises a heat dissipation substrate, a floodlight source and a spotlight source arranged on the upper surface of the heat dissipation substrate, a light cutting mechanism for realizing switching between high and low beam functions, and a light emitting lens, wherein the light emitting lens is provided with a first lens portion for emitting light from the floodlight source and a second lens portion for emitting light from the spotlight source, the width of the light emitted through the first lens portion is greater than the width of the light emitted through the second lens portion, the brightness of the light emitted through the first lens portion is lower than the brightness of the light emitted through the second lens portion, and the first lens portion and the second lens portion are arranged along the width direction of the automobile lamp; and the invention also comprises a heat dissipation structure for actively and / or passively dissipating heat for the automobile lamp.

2. The automobile lamp according to claim 1, characterized in that: The floodlight source includes a first LED light-emitting body and a first light-collecting component for collecting light from the first LED light-emitting body. The spotlight source includes a second LED light-emitting body and a second light-collecting component for collecting light from the second LED light-emitting body. The collection efficiency of the first light-collecting component for the first LED light-emitting body is not less than 80%, and the collection efficiency of the second light-collecting component for the second LED light-emitting body is not less than 80%.

3. The automobile lamp according to claim 2, characterized in that: The first light receiving component is a first reflective cup, which covers a first LED light-emitting body and is a symmetrical structure relative to the first LED light-emitting body. The second light receiving component is a second reflective cup, which covers a second LED light-emitting body and is a symmetrical structure relative to the second LED light-emitting body. The size of the first reflective cup is larger than that of the second reflective cup.

4. The automobile lamp according to claim 2, characterized in that: The light cutting mechanism includes a cut-off line baffle and a driving member for driving the cut-off line baffle to change position, the cut-off line baffle includes a first light cutting piece corresponding to the floodlight source and a second light cutting piece corresponding to the spotlight source, the light emitting surfaces of the first LED light emitting body and the second LED light emitting body are not higher than the vertices of the first light cutting piece and the second light cutting piece, and the first light cutting piece and the second light cutting piece can both cut the light into a low beam light type.

5. The automobile lamp according to claim 4, characterized in that: The cut-off line baffle is an asymmetric special-shaped structure, and in a width direction parallel to the vehicle lamp, the length of the first light cutting piece is greater than the length of the second light cutting piece.

6. The automobile lamp according to claim 4, characterized in that: The first light cutting piece includes a first arc piece and a second arc piece, the second light cutting piece includes a third arc piece and a fourth arc piece, the width of the first arc piece is greater than that of the second arc piece, the width of the third arc piece is greater than that of the fourth arc piece, the width of the first arc piece and the third arc piece are the same, the width of the second arc piece and the fourth arc piece are the same, and the curvatures of the first arc piece, the second arc piece, the third arc piece, and the fourth arc piece are the same; The first arc piece is close to the fourth arc piece or the two are connected, or the second arc piece is close to the third arc piece or the two are connected; the first arc piece and the second arc piece are integrally formed, and / or the third arc piece and the fourth arc piece are integrally formed, and / or the first light cutting piece and the second light cutting piece are integrally formed.

7. The automobile lamp according to claim 2, characterized in that: The distance between the first LED light emitting body and the light emitting lens is smaller than the distance between the second LED light emitting body and the light emitting lens.

8. The automobile lamp according to claim 2, characterized in that: The distance between the optical center of the first LED light emitting body and the optical axis of the first lens portion is 0 to 4 mm, and the distance between the optical center of the second LED light emitting body and the optical axis of the second lens portion is 0 to 4 mm.

9. The automobile lamp according to claim 2, characterized in that: The heat dissipation structure includes a fan, which is arranged at the tail of the automobile lamp or the bottom of the automobile lamp. The tail of the automobile lamp is the side away from the light output lens, and the bottom of the automobile lamp is the side away from the upper surface of the heat dissipation substrate.

10. The automobile lamp according to claim 9, characterized in that: The first LED light-emitting body is installed on the first light source copper plate, and the second LED light-emitting body is installed on the second light source copper plate; the first light source copper plate and the second light source copper plate are both installed on the upper surface of the heat dissipation substrate; the heat dissipation structure also includes a concentrated flood light source heat dissipation component, and the concentrated flood light source heat dissipation component is in contact with the upper surfaces of the first light source copper plate and the second light source copper plate.

11. The automobile lamp according to claim 10, characterized in that: The concentrated flood light source heat dissipation assembly is a heat pipe assembly, which includes a heat pipe and a connector, and the connector is provided with a groove for accommodating at least a portion of the heat pipe; the first light source copper plate and the second light source copper plate are arranged below the connector and are in contact with the connector and / or the heat pipe.

12. The automobile lamp according to claim 11, characterized in that: The concentrated flood light source heat dissipation assembly also includes heat dissipation fins connected to the heat pipe, the fan is arranged at the rear of the automobile lamp, and the heat dissipation fins are arranged close to the fan and are located between the fan and the first light source copper plate and / or between the fan and the second light source copper plate.

13. The vehicle lamp according to any one of claims 1 to 12, characterized in that: The automobile lamp also includes a fill light source, and the light output lens is provided with a third lens portion for emitting the fill light source.

14. The automobile lamp according to claim 13, characterized in that: There is one third lens portion, which is located at the top of the light-emitting lens, and the first lens portion and the second lens portion are symmetrically arranged along the third lens portion; or there are two third lens portions, which are respectively located above the first lens portion and the second lens portion; or the number of the third lens portions is three or more.

15. The automobile lamp according to claim 13, characterized in that: The first lens portion and the second lens portion are of the same size, and the equivalent diameters of the first lens portion and the second lens portion are 40 to 50 mm; and / or the equivalent diameter of the third lens portion is 40 to 50 mm, and the number of the third lens portions is 2.

16. The automobile lamp according to claim 13, characterized in that: Taking a plane parallel to the surface of the heat dissipation substrate and passing through the vertices of the first lens portion and the second lens portion as a reference plane, the area of ​​the curved surface of the first lens portion and the second lens portion below the reference plane is larger than the area of ​​the curved surface above the reference plane.

17. The automobile lamp according to claim 13, characterized in that: The heat dissipation structure also includes a heat dissipation fan inclined to the upper surface of the heat dissipation substrate and located above the floodlight source and the spotlight source, and a heat dissipation body arranged above the floodlight source and the spotlight source, the heat dissipation fan is arranged in the heat dissipation body, the fill light source is arranged on the heat dissipation body, and the fill light source is an LED light source and / or a laser light source.

18. The automobile lamp according to claim 13, characterized in that: The fill light source is a laser light source, the number of the third lens parts is 2, and the laser light source includes: a laser that emits a laser beam; A beam splitter element disposed on a path of the laser beam and used to split the laser beam into a first laser beam and a second laser beam; A first wavelength conversion element disposed on a path of the first laser, the first wavelength conversion element being used to convert at least part of the first laser into converted light; A second wavelength conversion element disposed on a path of the second laser, the second wavelength conversion element being used to convert at least part of the second laser into converted light; and a first lens for collecting the light emitted after being acted upon by the first wavelength conversion element and a second lens for collecting the light emitted after being acted upon by the second wavelength conversion element; The first lens and one of the third lens portions are coaxially arranged, and the second lens and the other third lens portion are coaxially arranged.

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