CN222142799U - A car headlight - Google Patents

Abstract

The utility model relates to the technical field of automobile illumination, in particular to an automobile lamp, which comprises a heat radiating substrate, a floodlight source and a condensing light source which are arranged on the upper surface of the heat radiating substrate, a light cutting mechanism for realizing the switching of the far light function and the near light function, and a light emitting lens, wherein the light emitting lens is provided with a first lens part for emitting the light of the floodlight source and a second lens part for emitting the light of the condensing light source, the width of the light emitted by the first lens part is larger than the width of the light emitted by the second lens part, the brightness of the light emitted by the first lens part is lower than the brightness of the light emitted by the second lens part, and the automobile lamp further comprises a heat radiating structure for actively radiating and/or passively radiating the automobile lamp. According to the utility model, the floodlight source and the spotlight source are arranged on the upper surface of the radiating substrate, and the heat conduction channels of the two light sources are not overlapped, so that the radiating of the two light sources is facilitated, the light emitting efficiency is good, the brightness is high, and the radiating effect of the whole lamp is good.

Description

Automobile lamp

Technical Field

The utility model relates to the technical field of automobile illumination, in particular to an automobile lamp.

Background

The light-emitting effect of the automobile lamp is divided into a low beam type and a high beam type. The low beam is mainly used for short-distance wide-range illumination in the travelling direction of the vehicle, the illumination distance is generally about thirty meters, the low beam is suitable for being used in the evening driving or under the condition of low visibility, the light angle of the low beam is low, the distance is short, and the object in front can be clearly distinguished. The high beam is usually used for driving on roads without street lamps such as expressways, suburban areas and the like, the light rays are emitted in parallel or nearly parallel, the brightness is high, the irradiation distance can reach about 80 meters to 120 meters, the use of the high beam can increase the sight height, and therefore the observation visual field is enlarged, and the effect is particularly remarkable when the high beam is used on roads with black paint or other low visibility.

In order to improve the light-emitting efficiency of the vehicle lamp as much as possible, the thickness of the heat-dissipating substrate needs to be as thin as possible, however, the positions of the low beam light source and the high beam light source on the upper side and the lower side of the heat-dissipating substrate are usually very close to each other, and the projections on the heat-dissipating substrate are highly overlapped, so that the heat-conducting channels of the low beam light source and the high beam light source are basically overlapped, and the heat-dissipating effect of the light source is poor. In addition, the existing automobile lamp design has poor heat circulation effect in the automobile lamp, so that the heat dissipation effect of the whole lamp is poor, and the service life of the whole lamp is influenced.

Disclosure of utility model

Based on the above, the utility model aims to overcome at least one defect in the prior art and provide the automobile lamp, which has the advantages of good light emitting efficiency, high brightness, good light source heat dissipation effect and good whole lamp heat dissipation effect.

The technical scheme is as follows:

The automobile lamp comprises a heat radiating substrate, a floodlight source and a condensing light source which are arranged on the upper surface of the heat radiating substrate, a light cutting mechanism for realizing the switching of the far light function and the near light function, and a light emitting lens, wherein the light emitting lens is provided with a first lens part for emitting light rays of the floodlight source and a second lens part for emitting light rays of the condensing light source, the width of the light rays emitted by the first lens part is larger than that of the light rays emitted by the second lens part, the brightness of the light rays emitted by the first lens part is lower than that of the light rays emitted by the second lens part, and the first lens part and the second lens part are arranged along the width direction of the automobile lamp, and the automobile lamp further comprises a heat radiating structure for actively radiating and/or passively radiating the automobile lamp.

Preferably, the floodlight source comprises a first LED light emitter and a first light receiving piece for receiving light from the first LED light emitter, the floodlight source comprises a second LED light emitter and a second light receiving piece for receiving light from the second LED light emitter, the collecting efficiency of the first light receiving piece on the first LED light emitter is not lower than 80%, and the collecting efficiency of the second light receiving piece on the second LED light emitter is not lower than 80%.

Preferably, the first light receiving part is a first light reflecting cup, the first light reflecting cup cover is arranged above the first LED luminous body and is of a symmetrical structure relative to the first LED luminous body, the second light receiving part is a second light reflecting cup, the second light reflecting cup cover is arranged above the second LED and is of a symmetrical structure relative to the second LED luminous body, and the size of the first light reflecting cup is larger than that of the second light reflecting cup.

Preferably, the light cutting mechanism comprises a cut-off line baffle and a driving piece for driving the cut-off line baffle to perform position conversion, the cut-off line baffle comprises a first light cutting piece corresponding to the floodlight source and a second light cutting piece corresponding to the spotlight source, the luminous surfaces of the first LED luminous body and the second LED luminous body are not higher than the vertexes 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 cut light into dipped beams.

Preferably, the cut-off line baffle is of an asymmetric special-shaped structure, and the length of the first cut-off sheet is larger than that of the second cut-off sheet in the direction parallel to the width direction of the car lamp.

Preferably, the first light cutting piece comprises a first circular arc piece and a second circular arc piece, the second light cutting piece comprises a third circular arc piece and a fourth circular arc piece, the width of the first circular arc piece is larger than that of the second circular arc piece, the width of the third circular arc piece is larger than that of the fourth circular arc piece, the widths of the first circular arc piece and the third circular arc piece are the same, the widths of the second circular arc piece and the fourth circular arc piece are the same, the curvatures of the first circular arc piece, the second circular arc piece, the third circular arc piece and the fourth circular arc piece are the same, the first circular arc piece is close to the fourth circular arc piece or is connected with the second circular arc piece or is close to the third circular arc piece or is connected with the fourth circular arc piece, the first circular arc piece and the second circular arc piece are integrally formed, and/or the third circular arc piece and the fourth circular arc piece are integrally formed, and/or the first light cutting piece and the second light cutting piece are integrally formed.

Preferably, a distance between the first LED emitter and the light-emitting lens is smaller than a distance between the second LED emitter and the light-emitting lens.

Preferably, the distance between the optical center of the first LED light emitter and the optical axis of the first lens portion is 0-4 mm, and the distance between the optical center of the second LED light emitter and the optical axis of the second lens portion is 0-4 mm.

Preferably, the heat dissipation structure comprises a fan, the fan is arranged at the tail part of the automobile lamp or at the bottom of the automobile lamp, the tail part of the automobile lamp is one side deviating from the light-emitting lens, and the bottom of the automobile lamp is one side deviating from the upper surface of the heat dissipation substrate.

The LED light source comprises a first LED light source copper plate, a second LED light source copper plate, a heat radiation structure and a heat radiation assembly, wherein the first LED light source is arranged on the first LED light source copper plate, the second LED light source is arranged on the second LED light source copper plate, the first LED light source copper plate and the second LED light source copper plate are both arranged on the upper surface of a heat radiation substrate, and the heat radiation structure further comprises a heat radiation assembly of the concentrated light source, and the heat radiation assembly of the concentrated light source is in contact with the upper surfaces of the first light source copper plate and the second light source copper plate.

Further preferably, the heat dissipation assembly of the floodlight source is a heat pipe assembly, the heat pipe assembly comprises a heat pipe and a connecting piece, a groove for accommodating at least a part of the heat pipe is formed in the connecting piece, and the first light source copper plate and the second light source copper plate are arranged below the connecting piece and are in contact with the connecting piece and/or the heat pipe.

The floodlight source heat dissipation assembly further comprises heat dissipation fins connected with the heat pipes, the fans are arranged at the tail parts of the automobile lamps, and the heat dissipation fins are arranged close to the fans and located between the fans and the first light source copper plate and/or between the fans and the second light source copper plate.

Preferably, the automobile lamp further comprises a light supplementing light source, and the light emitting lens is provided with a third lens part for emitting the light supplementing light source.

Preferably, the number of the third lens parts is one, the third lens parts are positioned at the top of the light emitting lens, the first lens parts and the second lens parts are symmetrically arranged along the third lens parts, or the number of the third lens parts is two, the two third lens parts are respectively positioned above the first lens parts and the second lens parts, or the number of the third lens parts is three or more.

Preferably, the first lens portion and the second lens portion have the same size, the equivalent diameters of the first lens portion and the second lens portion are 40-50 mm, and/or the equivalent diameter of the third lens portion is 40-50 mm, and the number of the third lens portions is 2.

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

Preferably, the heat dissipation structure further comprises a heat dissipation fan which is inclined to the upper surface of the heat dissipation substrate and is positioned above the floodlight source and the spotlight source, and a heat dissipation body which is arranged above the floodlight source and the spotlight source, the heat dissipation fan is arranged in the heat dissipation body, the light supplementing source is arranged on the heat dissipation body, and the light supplementing source is an LED light source and/or a laser light source.

Preferably, the light supplementing light source is a laser light source, the number of the third lens parts is 2, the laser light source comprises a laser for emitting laser beams, a light splitting element arranged on the path of the laser beams and used for splitting the laser beams into first laser beams and second laser beams, a first wavelength conversion element arranged on the path of the first laser beams and used for at least partially converting the first laser beams into the laser beams, a second wavelength conversion element arranged on the path of the second laser beams and used for at least partially converting the second laser beams into received laser beams, a first lens used for collecting the light rays emitted after the first wavelength conversion element acts and a second lens used for collecting the light rays emitted after the second wavelength conversion element acts, the first lens and one of the third lens parts are coaxially arranged, and the second lens and the other third lens part are coaxially arranged.

Compared with the prior art, the floodlight source and the spotlight source are arranged on the upper surface of the radiating substrate, the heat conduction channels of the two light sources are not overlapped, the thickness of the radiating substrate can be increased, the radiating of the two light sources is facilitated, the floodlight source emits light rays with wide angle range through the first lens part, the spotlight source emits light rays with high brightness through the second lens part, most of the light rays of the floodlight source and the spotlight source can be fully utilized, the light cutting mechanism shields the light rays of the floodlight source and the spotlight source very little, the obtained light irradiation range is wide, the brightness is high, the whole automobile lamp has high light emitting efficiency, and the radiating structure for active radiating and/or passive radiating is arranged for the automobile lamp, so that the heat in the automobile lamp circularly flows, the radiating effect of the whole lamp is good, and the service life is long.

Drawings

Fig. 1 is an exploded view of an automotive lamp according to embodiment 1 of the present utility model.

Fig. 2 is a front view of an automotive lamp according to embodiment 1 of the present utility model.

FIG. 3 is a cross-sectional view taken at the angle A-A of FIG. 2.

Fig. 4 is a partial explosion diagram of an automotive lamp according to embodiment 1 of the present utility model.

Fig. 5 is a perspective view of an automotive lamp according to embodiment 1 of the present utility model.

Fig. 6 is a schematic diagram showing heat conduction of a light source of an automotive lamp according to embodiment 1 of the utility model.

Fig. 7 is a schematic structural diagram of a heat dissipation assembly for a spotlight and floodlight according to embodiment 1 of the present utility model.

Fig. 8 is a schematic diagram of another structure of the heat dissipation assembly of the floodlight in embodiment 1 of the present utility model.

Fig. 9 is an assembly schematic diagram of the heat pipe assembly with the first and second light source copper plates.

Fig. 10 is an exploded view of a heat pipe assembly with a first light source copper plate and a second light source copper plate.

FIG. 11 is a schematic view of a heat pipe assembly from another perspective.

Fig. 12 is an exploded view of fig. 11.

Fig. 13 is a schematic structural view of a light cutting mechanism, wherein a is a circular irregular structure with asymmetric design.

Fig. 14 is a schematic view of a light-emitting lens structure.

Fig. 15 is a schematic diagram of a prior art front-loading LED luminary and reflector cup arrangement.

Fig. 16 is a partial exploded view of an automotive lamp according to embodiment 2 of the present utility model.

Reference numerals illustrate:

1. A heat-dissipating substrate; 21, a first reflecting cup; 22, a first LED luminary; 31, second reflector cup, 32, second LED illuminant, 4, light cutting mechanism, 41, electromagnetic valve, 42, cut-off line baffle, 421, first cut-off sheet, 4211, first circular-arc sheet, 4212, second circular-arc sheet, 422, second cut-off sheet, 4221, third circular-arc sheet, 4222, fourth circular-arc sheet, 423, vertex, 5, light-emitting lens, 51, first lens portion, 511, first lens portion lower curved surface, 512, first lens portion upper curved surface, 52, second lens portion, 521, second lens portion lower curved surface, 522, second lens portion upper curved surface, 53, third lens portion, 61, first light source copper plate, 62, second light source copper plate, 7, radiator fan, 8, polyflood light source radiator assembly, 81, heat pipe assembly, 811, heat pipe, 812, connector, 8121, recess, 8122, bump, 82, fin, 9, radiator, 10, light supplement source, 11, fan, 12, fan housing, 13, driving plate, 14, lower cover plate, 15, bracket 16, bracket, 172, radiator, 10, light supplement source, fan housing, 13, driving plate, first light-emitting element, second light source copper plate, 7, lower cover plate, 15, bracket, 16, bracket, 172, radiator, 10, light source, third lens housing, light source copper plate, first light source copper plate, and first light source plate, 62, second light source copper plate, copper plate and 8, heat-plate and 8, heat radiating plate, 8, heat-radiating plate, 8, and heat radiating plate and 8, and 8 and heat-and heat to arc to and to.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the utility model. For better illustration of the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and not represent the actual product size, and it will be understood by those skilled in the art that some well-known structures in the drawings and their descriptions may be omitted.

Example 1

As shown in fig. 1 to 6, the present embodiment provides an automotive lamp, which comprises a heat dissipation substrate 1, a floodlight source and a condensing light source arranged on the upper surface of the heat dissipation substrate 1, a light cutting mechanism 4 for realizing the switching of the far and near light functions, and a light emitting lens 5, wherein the light emitting lens 5 is provided with a first lens part 51 for emitting the light of the floodlight source and a second lens part 52 for emitting the light of the condensing light source, the width of the light emitted by the first lens part 51 is larger than the width of the light emitted by the second lens part 52, the brightness of the light emitted by the first lens part 51 is lower than the brightness of the light emitted by the second lens part 52, and the first lens part 51 and the second lens part 52 are arranged along the width direction of the automotive lamp, and the automotive lamp further comprises a heat dissipation structure for actively dissipating heat and/or passively dissipating heat of the automotive lamp.

For the sake of clarity of description, the length direction, width direction, and height direction of the automobile lamp are identified, and as shown in fig. 1, a direction parallel to the optical axis of the light-emitting lens 5 (the optical axis of the light-emitting lens 5 is a line passing through the center point and focus of the light-emitting lens 5) is denoted by x, a direction parallel to the surface of the heat-dissipating substrate 1 and perpendicular to the length direction is denoted by y, and a direction perpendicular to the x and y is denoted by z.

The brightness of the emergent light rays refers to the illuminance of the emergent light rays, and the width of the emergent light rays refers to the distance between the left side and the right side of the emergent light region when the emergent light rays are emitted forwards.

When the low beam effect is to be realized, the light cutting mechanism 4 is positioned on the light path to shield the light rays, so as to realize the low beam illumination effect with clear cut-off line, and when the high beam effect is to be realized, the light cutting mechanism 4 moves out of the light paths of the floodlight source and the spotlight source, so as to realize the high beam illumination effect.

Compared with the prior art that the low beam and the high beam are respectively arranged on the same radiating substrate and are respectively positioned on the upper side and the lower side of the radiating substrate, in the embodiment, the floodlight light source and the spotlight source are both arranged on the upper surface of the radiating substrate 1, so that the radiating substrate can be thicker, and the radiating of the two light sources is facilitated. In the existing car lamp, the light of the low beam light source is emitted through the lower half part of the light-emitting lens, the light of the high beam light source is emitted through the upper half part of the light-emitting lens, most of the light of the high beam light source is blocked when low beam illumination is realized, and the brightness of the car lamp is lower when the low beam illumination is realized. In the technical scheme of the application, when low beam illumination is performed, the utilization rate of the floodlight source is high, the light utilization rate of the spotlight source is also very high, and only a small part of light of the floodlight source and the spotlight source is shielded by the light cutting mechanism 4 (when low beam illumination is realized, the light cutting mechanism 4 only serves to shield stray light of a small part of the floodlight source and the spotlight source so as to obtain low beam light with a clear cut-off line). The floodlight source emits light with a wide angle range through the first lens part 51, and the condensing light source emits light with high brightness through the second lens part 52, so that the emitted light has a wide irradiation range and high brightness. In addition, since the floodlight source and the condensing light source emit light through the first lens portion 51 and the second lens portion 52, respectively, the light emitted from the floodlight source and the condensing light source after being acted by the light emitting lens 5 is symmetrical along the optical axis of the light emitting lens 5, so that an eccentric or asymmetric object of the light emitting effect is avoided, and the light emitting effect is ensured. And because the first lens part 51 and the second lens part 52 are arranged on the light-emitting lens 5, the sizes of the first lens part 51 and the second lens part 52 are smaller than the size of the whole light-emitting lens 5, so that the floodlight source and the condensing light source can be designed to be closer to the light-emitting lens 5, and the length of the whole automobile lamp can be shortened or more space is reserved for the automobile lamp under the same length for heat dissipation design. The heat dissipation structure for the active heat dissipation and/or the passive heat dissipation of the automobile lamp can enable the heat in the automobile lamp to flow circularly, and the whole lamp has good heat dissipation effect and long service life.

Further, the floodlight source comprises a first LED emitter 22 and a first light receiving element for receiving light from the first LED emitter 22, the floodlight source comprises a second LED emitter 32 and a second light receiving element for receiving light from the second LED emitter, the collection efficiency of the first light receiving element for the first LED emitter 22 is not lower than 80%, and the collection efficiency of the second light receiving element for the second LED emitter 32 is not lower than 80%. Most of the car lamps in the existing aftermarket are provided with high beam and low beam light sources on the lower surface and the upper surface of a heat dissipation substrate respectively, and a small part of the car lamps have the luminous surfaces of the high beam and low beam light sources facing upwards, but the installation surfaces of the high beam and low beam light sources are lower than those of the low beam light sources. The former always has the problems of heat dissipation and light-emitting efficiency caused by the thickness of a heat dissipation substrate, and the latter has the problem of low light-emitting efficiency of a high-beam light source because the high-beam reflecting cup cannot shield the light of low beam. Some front-loading lamps adopt a mode of arranging a plurality of light sources on the upper surface of a heat-radiating substrate as low-beam light sources, but the collecting efficiency of a light receiving structure on a luminous body is very low, the light loss is large, the brightness of the lamps is low, and the luminous bodies are usually arranged at 3 or more positions. As shown in fig. 15, one of the configurations of the LED luminaries and the reflective cups in the existing front-loading market is shown, the substrate includes a first luminary 171, a second luminary 172 and a third luminary 173, the reflective cup with an integrally formed three-cup structure is disposed above the three luminary, the reflective cup with the three-cup structure includes a first cup 181, a second cup 182 and a third cup 183, the first cup 181 is disposed above the first luminary 171, the second cup 182 is disposed above the second luminary 172, and the third cup 183 is disposed above the third luminary 173. The light-reflecting cup with the structure has lower light-receiving efficiency, the collecting efficiency of the first cup body 181 to the first illuminant 171, the second cup body 182 to the second illuminant 172 and the third cup body 183 to the third illuminant 173 is lower than 70%, and the effective light collecting efficiency of the luminescent plate with the whole three-cup structure to the three illuminants is lower than 70%. And the high beam light source is additionally arranged below the substrate in the mode, so that low beam illumination and high beam illumination can be better met. According to the technical scheme, the collection efficiency of the first light receiving part and the second light receiving part is not lower than 80%, and even not lower than 90% can be achieved, and the collection efficiency is high.

More specifically, as shown in fig. 1, the first light receiving element is a first light reflecting cup 21, the first light reflecting cup 21 covers the first LED luminary 22 and has a symmetrical structure with respect to the first LED luminary 22, the second light receiving element is a second light reflecting cup 31, the second light reflecting cup 31 covers the second LED luminary 22 and has a symmetrical structure with respect to the second LED luminary 32, and the size of the first light reflecting cup 21 is larger than the size of the second light reflecting cup 31. As described above, in the existing front-loading market, a plurality of light sources are partially arranged on the upper surface of the heat-dissipating substrate, but the collection efficiency of the light-receiving structure on the light emitters is very low, the light loss is large, the light emitters are usually arranged at 3 or more positions, in addition, in the embodiment, the light emitters are arranged at 2 positions, the generation of the heat of the vehicle light is reduced in number from the light sources, and meanwhile, the collection efficiency of the light-reflecting cup on the light emitters of the LEDs is high by matching with the light-reflecting cup which is symmetrical with respect to the light emitters of the LEDs. Further, the first reflecting cup 21 includes an upper plane and a side curved surface with an opening facing the light-emitting lens 51, and the side curved surface is connected to the heat-dissipating substrate 1 except for the opening. The reflecting cup with the structure is a standard reflecting cup on the market, is also called an ellipsoidal reflecting cup, and has high collecting efficiency of an LED illuminant which can reach 90% because light is not leaked in other places except the opening position. The second reflector cup 31 is also similarly shaped and is also an ellipsoidal reflector cup. Compared with the design shown in fig. 15, the light emitted by the LED luminous body can be well collected. And the size of the first reflecting cup for collecting the low beam light is designed to be larger than the size of the second reflecting cup for collecting the high beam light, so that floodlight can be collected simultaneously, the light irradiation range is wider, the brightness is higher, and the light loss is reduced.

As shown in fig. 13, the light cutting mechanism 4 includes a cut-off line baffle 42 and a driving member for driving the cut-off line baffle 42 to perform position change, and in this embodiment, the driving member is an electromagnetic valve 41. The cut-off line baffle 42 includes a first cut-off sheet 421 corresponding to the floodlight source and a second cut-off sheet 422 corresponding to the spotlight source, the light emitting surfaces of the first LED luminary 22 and the second LED luminary 32 are not higher than the vertexes 423 of the first cut-off sheet 421 and the second cut-off sheet 422, and the first cut-off sheet 421 and the second cut-off sheet 422 can cut light into dipped beam patterns. By setting the light emitting surfaces of the first LED light emitter 22 and the second LED light emitter 32 not higher than the apexes 423 of the first light cut sheet 421 and the second light cut sheet 422, only a very small portion of the light of the condensed light source and the floodlight source can be blocked by the light cut mechanism 4, and the light can be emitted from substantially all the light emitting surfaces of the first lens portion 51 and the second lens portion 52, with high light emitting efficiency. The vertex 423 of the first light-cutting sheet 421 and the second light-cutting sheet 422 in the present invention refers to the highest point at the transition of the light-cutting sheets.

In addition, the cut-off line baffle 42 has an asymmetric profile structure, and the length of the first cut-off sheet 421 is greater than the length of the second cut-off sheet 422 in a direction parallel to the width direction of the lamp. Further preferably, the weight of the first cut sheet 421 and the weight of the second cut sheet 422 are different by less than 10%. As shown in fig. 13, the stop line baffle 42 is of an asymmetric special structure, the stop line baffle 42 needs to be connected with an electromagnetic rod of the electromagnetic valve 41, and a connection area is shown in a circular area a of fig. 13. In view of optical considerations only, the length of the second cut-off sheet 422 can be reduced because the condensing requires a more concentrated light path of the condensing spot, so that there are fewer areas that need to be blocked. However, if the weight difference between the two sides of the cut-off line baffle 42 is large, it is difficult to ensure the balance of the cut-off line baffle 42, so that the end of the second cut-off sheet 422 near the electromagnet rod may be shaped. The technical scheme can simultaneously meet balance and assemblability through the special-shaped design, and the light effect is not affected.

In this embodiment, the first light cutting sheet 421 includes a first circular arc sheet 4211 and a second circular arc sheet 4212, the second light cutting sheet 422 includes a third circular arc sheet 4221 and a fourth circular arc sheet 4222, the width of the first circular arc sheet 4211 is greater than that of the second circular arc sheet 4212, the width of the third circular arc sheet 4221 is greater than that of the fourth circular arc sheet 4222, the widths of the first circular arc sheet 4211 and the third circular arc sheet 4221 are the same, the widths of the second circular arc sheet 4212 and the fourth circular arc sheet 4222 are the same, and the curvatures of the first circular arc sheet 4211, the second circular arc sheet 4212, the third circular arc sheet 4221 and the fourth circular arc sheet 4222 are the same. More specifically, the first arcuate piece 4211 is connected near the fourth arcuate piece 4222 or both, or the second arcuate piece 4212 is connected near the third arcuate piece 4221 or both. The arrangement of the embodiment is that the light patterns of the two light-cutting sheets are symmetrical after the light-cutting sheets are cut, and the light-emitting effect is improved. More specifically, in this embodiment, the first circular arc piece 4211 is disposed close to the fourth circular arc piece 4222, that is, the second circular arc piece 4212 and the third circular arc piece 4221 are located at two sides of the stop line baffle 42, and the first circular arc piece 4211 and the fourth circular arc piece 4222 are located in the middle of the stop line baffle, so that the design is more suitable for the domestic left driving mode. Further, the first circular arc piece 4211 and the second circular arc piece 4212 are integrally formed, the third circular arc piece 4221 and the fourth circular arc piece 4222 are integrally formed, and the first cut piece 421 and the second cut piece 422 are integrally formed. The integrated molding design is convenient for manufacturing, installing and disassembling the components.

Further, the distance between the first LED luminary 22 and the light-emitting lens 5 is smaller than the distance between the second LED luminary 32 and the light-emitting lens 5. The arrangement makes two LED luminous bodies stagger in the length direction of the car lamp, which is beneficial to the heat dissipation of the light source, and in addition, the light gathering and floodlighting effects can be better realized respectively.

In this embodiment, the distance between the optical center of the first LED emitter 22 and the optical axis of the first lens portion 51 is 0 to 4mm, and the distance between the optical center of the second LED emitter 32 and the optical axis of the second lens portion 52 is 0 to 4mm. The optical centers of the first LED luminary 22 and the second LED luminary 32 are respectively located on or near the optical axes of the first lens portion 51 and the second lens portion 52, so that the heat dissipation effect of the spotlight source and the floodlight source is ensured, and meanwhile, the light collection efficiency of the floodlight source and the spotlight source is ensured, and the brightness of the outgoing light is high. The optical center of the LED light emitter in this embodiment refers to the optical center of the light emitting surface of the LED, and the LED light emitter is composed of an LED chip and a fluorescent layer covered on the LED chip, and the surface of the fluorescent layer is the light emitting surface of the LED.

In addition, the heat radiation structure includes a fan 11, the fan 11 is arranged at the tail part of the automobile lamp or at the bottom of the automobile lamp, the tail part of the automobile lamp is one side deviating from the light-emitting lens 5, and the bottom of the automobile lamp is one side deviating from the upper surface of the heat radiation substrate 1. In this embodiment, in order to protect the fan 11, a fan cover 12 is provided to prevent dust from entering the inside of the lamp and to increase the aesthetic appearance.

The first LED luminous body 22 is installed on the first light source copper plate 61, the second LED luminous body 32 is installed 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 installed on the upper surface of the heat dissipation substrate 1, the heat dissipation structure further comprises a floodlight source heat dissipation assembly 8, and the floodlight source heat dissipation assembly 8 is in contact with the upper surfaces of the first light source copper plate 61 and the second light source copper plate 62. The heat dissipation substrate 1 is a main bearing mechanism, and simultaneously has a heat dissipation function, the first LED luminous body 22 and the second LED luminous body 32 are respectively arranged on the first light source copper plate 61 and the second light source copper plate 62, the first light source copper plate 61 and the second light source copper plate 62 are arranged on the upper surface of the heat dissipation substrate 1, heat is conducted rapidly through the heat dissipation substrate 1, and heat is discharged out of the car lamp in a circulating manner. In the prior art, the low beam light source and the high beam light source are respectively positioned at the upper side and the lower side of the radiating substrate, so that the heat radiating component 8 of the concentrated flood light source cannot be designed to be directly and simultaneously connected with the copper plates of the low beam light source and the high beam light source. In this embodiment, the condensing light source and the floodlight source are both on the upper surface of the heat dissipation substrate 1, i.e. on the same side of the heat dissipation substrate 1, so that the condensing and floodlight source heat dissipation assembly 8 can directly contact with the first light source copper plate 61 and the second light source copper plate 62, and the heat dissipation efficiency of the light source is good.

Further, the heat dissipation assembly 8 of the floodlight is a heat pipe assembly 81, as shown in fig. 9-12, the heat pipe assembly 81 includes a heat pipe 811 and a connecting piece 812, a groove 8121 for accommodating at least a portion of the heat pipe 811 is provided on the connecting piece 812, and the first light source copper plate 61 and the second light source copper plate 62 are disposed below the connecting piece 812 and contact with the connecting piece 812 and/or the heat pipe 811. The heat pipe 811 is welded in the groove 8121, the heat pipe 811 and the connecting piece 812 can be tightly connected together in a welding mode, the design of the groove 8121 can enable the heat pipe 811 and the connecting piece 812 to be in contact with the first light source copper plate 61 and the second light source copper plate 62, the heat pipe has the characteristics of high heat conductivity and large surface area, heat can be quickly absorbed and conducted, the heat pipe 811 is in direct contact with the first light source copper plate 61 and the second light source copper plate 62, heat can be directly conducted, heat dissipation efficiency is higher, the design of the connecting piece 812 can increase the contact area of the heat pipe assembly 81 and the first light source copper plate 61 and the second light source copper plate 62, and the heat dissipation effect is improved by increasing the heat conducting surface.

In this embodiment, the heat dissipation assembly 8 of the spotlight source includes a heat pipe assembly 81 and heat dissipation fins 82 connected with the heat pipe assembly 81, and the heat dissipation surface area of the heat dissipation assembly 8 of the spotlight source is larger and the heat dissipation effect is better by welding the heat pipe assembly 81 with the heat dissipation fins 82. The heat sink fins 82 include various designs, such as a metal piece with a plurality of metal sheets spaced apart from each other in the middle of the heat sink fins 82 being integrally formed as shown in fig. 7. As shown in fig. 8, the heat sink fin 82 is a metal member formed by splicing and assembling a plurality of metal sheets.

In this embodiment, the fan 11 is disposed at the tail of the automobile lamp, and the heat dissipation fins are disposed close to the fan 11 and located 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 mode of combining active heat dissipation and passive heat dissipation can further improve the heat dissipation effect of the light source and the whole lamp.

Further, the vehicle lamp further comprises a light supplementing light source 10, and the light emitting lens 5 is provided with a third lens part 53 for emitting the light supplementing light source 10. The arrangement of the light supplementing light source 10 can further achieve higher brightness and a longer-distance light emitting effect, increase the brightness of the car lamp and improve the utilization rate of the whole light emitting lens.

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, the third lens portion 53 may be one, the third lens portion 53 is located on top of the light-emitting lens 3, and the first lens portion 51 and the second lens portion 52 are symmetrically disposed along the third lens portion 53. In other embodiments, the number of the light-emitting lens portions 53 may be 3 or more.

In this embodiment, the first lens portion 51 and the second lens portion 52 have the same size, the equivalent diameters of the first lens portion 51 and the second lens portion 52 are 40 to 50mm, and the equivalent diameter of the third lens portion 53 is 40 to 50mm. Further, in the present embodiment, the ratio of the equivalent diameter of the first lens portion 51 to the equivalent diameter of the second lens portion 52 to the diameter of the light incident surface of the light-emitting lens 5 is (0.55-0.7): 1. The focal length of the small lenses of the first lens part 51 and the second lens part 52 is shorter, the position of the floodlight source and the position of the condensing light source can be closer to the emergent lens 5, the whole length of the car lamp is shorter, the car lamp is small in size, more compact in structure and lighter in weight. The equivalent diameter refers to the diameter of a complete spherical lens or an aspheric lens under the condition of equal side thickness.

Further, with a plane parallel to the surface of the heat dissipation substrate and passing through the apexes of the first and second lens portions 51, 52 as a reference plane, the area of the curved surface of the first and second lens portions 51, 52 located below the reference plane is larger than the area of the curved surface located above the reference plane. As shown in fig. 14, the plane where the vertices of the first lens portion 51 and the second lens portion 52 are located is taken as a reference plane, the lower portion is a first lens portion lower curved surface 511, the second lens portion lower curved surface 521, the upper portion is a first lens portion upper curved surface 512 and a second lens portion upper curved surface 522, the area of the first lens portion lower curved surface 511 is larger than the area of the first lens portion upper curved surface 512, and the area of the second lens portion lower curved surface 521 is larger than the area of the second lens portion upper curved surface 522. By the design, the light-emitting efficiency of the spotlight source and the floodlight source is higher. In this embodiment, the apexes 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 at the most marginal positions in the longitudinal direction of the vehicle lamp. Further, in the present embodiment, the vertices of the first lens portion 51 and the first lens portion 52 are located in the lower half area of the light-emitting lens 5.

Further, the heat dissipation structure further comprises a heat dissipation fan 7 inclined to the upper surface of the heat dissipation substrate 1 and located above the floodlight source and the condensing light source, and a heat dissipation body 9 arranged above the floodlight source and the condensing light source, the heat dissipation fan 7 is arranged in the heat dissipation body 9, the light supplementing light source 10 is arranged on the heat dissipation body 9, the heat dissipation effect of the light supplementing light source 10 is good, and the light supplementing 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 of conventional structures in the market, for example, the laser light source comprises a shell, a laser arranged in the shell, a focusing lens and a fluorescent powder sheet, wherein the focusing lens and the fluorescent powder sheet are sequentially arranged along a laser light path of the laser. The LED light source comprises an LED illuminant.

In this embodiment, the heat dissipation fan 7 is disposed opposite to the curved surfaces of the first reflecting cup 21 and the second reflecting cup 31. On the other hand, the light cutting mechanism 4 comprises an electromagnetic valve 41, and heat is generated, and the heat radiating fan 7 can be arranged close to and opposite to the light cutting mechanism 4, so that local heat of the light cutting mechanism 4 can be discharged more effectively, and the heat radiating effect is good.

In this embodiment, as shown in fig. 11-12, two protruding blocks 8122 are respectively disposed on the left and right sides of the connecting piece 812, and two protruding blocks 8122 are respectively disposed on the upper and lower sides of the connecting piece 812, and the first light source copper plate 61 and the second light source copper plate 62 are respectively connected to one protruding block 8122. The bump 8122 is provided with a screw hole, the heat pipe assembly 81 is locked on the heat dissipation substrate 1 through the screw hole, the heat pipe assembly 81 is convenient to install due to the arrangement of the bump 8122, and the bump 8122 is designed in a central symmetry mode, so that the center of gravity of the connecting piece 812 is located at the central position of the connecting piece, and balance of the vehicle lamp is convenient to guarantee. On the other hand, since the first LED emitter 22 and the second LED emitter 32 are different in distance from the light-emitting lens 5, the heat pipe assembly 81 can be designed to better dissipate heat from the first LED emitter 22 and the second LED emitter 32.

Further, the heat radiation body 9 is of a metal shell structure matched with the placing position of the heat radiation fan 7, so that the internal structure of the car lamp is prevented from being exposed, dust and other impurities enter the car lamp, the attractive appearance of the car lamp is improved, the volume and the surface area of the heat radiation body 9 are far larger than those of the heat radiation bodies on the market at present, and the heat radiation fan 7 and the heat radiation body 9 are matched, so that the remarkable improvement of the heat radiation effect can be realized.

As shown in fig. 3, in the present embodiment, the fan 11 is used to blow air into the lamp, and the radiator fan 7 is used to exhaust air to the outside of the lamp. Because the first reflecting cup 21 and the second reflecting cup 31 exist in the car lamp, the position direction of the reflecting cup can be changed after the air flow of the fan 11 blows in, the radiating fan 7 is obliquely opposite to the radiating substrate 1 and is opposite to the curved surface of the reflecting cup, and the hot air flow in the car lamp can be discharged more quickly. As shown in fig. 6, the heat of the first LED light emitter 21 and the second LED light emitter 32 in the vehicle lamp is conducted to the first light source copper plate 61 and the second light source copper plate 62, and is conducted to the heat collecting and radiating component 8 and the heat radiating substrate 1 through the heat pipe 811 and the connecting piece 812, and the heat circulation in the vehicle lamp is accelerated by the combined action of the fan 11 blowing air into the vehicle lamp, the heat exhausting fan 7 exhausting air outwards and the heat radiating body 9, so that the heat is discharged out of the vehicle lamp quickly, and the heat radiating effect is good.

In this embodiment, the driving board 13 is further included for driving the floodlight source and the spotlight source to work. A lower cover plate 14 is arranged below the heat dissipation substrate 1 to realize the encapsulation of the bottom of the car lamp. In order to facilitate the installation of the light-emitting lens 5, a lens bracket 15 is provided, and in order to facilitate the installation of the components of the vehicle lamp, an installation bracket 16 is provided, and the lens bracket 15 is installed on the installation bracket 16. Further, the mounting bracket 16 is perpendicular to the heat dissipation substrate 1, and the mounting bracket 16 may be fixed to the heat dissipation substrate 1 by screws or the like, or the mounting bracket 16 and the heat dissipation substrate 1 may be integrally formed.

Example 2

The lamp of this embodiment 2 is substantially the same as that of embodiment 1, except for the light source for light supplement of this embodiment 2. As shown in fig. 16, the light supplementing light source of the present embodiment is a laser light source, the number of which is 2, and the laser light source includes a laser 101 that emits a laser beam, a spectroscopic element 102 that is provided on a path of the laser beam for dividing the laser beam into a first laser light and a second laser light, a first wavelength conversion element 103 that is provided on a path of the first laser light, the first wavelength conversion element 103 for converting the first laser light at least partially into the laser light, a second wavelength conversion element 104 that is provided on a path of the second laser light, the second wavelength conversion element 104 for converting the second laser light at least partially into the laser light, and a first lens 105 that is provided for collecting the light emitted after the first wavelength conversion element 103 acts and a second lens 106 that is provided for collecting the light emitted after the second wavelength conversion element 104 acts, the first lens 105 and one of the third lens portions 53 are coaxially provided, and the second lens 106 and the other third lens portions 53 are coaxially provided. In the embodiment 2, the laser beam emitted from the laser source is split into two paths of laser light, namely, the first laser light and the second laser light, under the action of the light splitting element 102, the first laser light is at least partially converted into laser light after passing through the action of the first wavelength conversion element 103, the unconverted laser light and the laser light are combined into illumination light, and the illumination light is collected by the first lens 105 and then emitted through one of the third lens portions 53 to form high beam illumination. The second laser light is at least partially converted into laser light by the second wavelength conversion element 104, and the unconverted laser light and the laser light are combined to form illumination light, which is collected by the second lens 106 and emitted by the other third lens 53 to form high beam illumination. In this embodiment, the light-splitting element 102 is designed to enable one laser to emit light from two third lens portions, so that the light-emitting efficiency of the laser is improved. Specifically, the light splitting element 102 may be a polarizing 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. Further, a diffusion sheet 108 is further arranged on the optical paths of the first laser and the second laser, and the diffusion sheet 108 is used for homogenizing light spots irradiated on the fluorescent powder sheet, so that the phenomenon of powder burning is avoided. More specifically, a third lens 107 for focusing the first and second laser light onto the phosphor sheet is further provided between the diffusion sheet 108 and the phosphor sheet. Further, as shown in fig. 16, a mirror 109 is further provided on the optical path of the second laser light, and the mirror 109 is used to change the propagation mode of the second laser light so that the second laser light and the first laser light after passing through the mirror 109 are parallel.

Other structures and working principles of this embodiment 2 are substantially the same as those of embodiment 1, and will not be described here again.

It should be understood that the foregoing examples of the present utility model are merely illustrative of the present utility model and are not intended to limit the present utility model to the specific embodiments thereof. Any modification, equivalent replacement, improvement, etc. that comes within the spirit and principle of the claims of the present utility model should be included in the protection scope of the claims of the present utility model.

Claims (18)

1. The automobile lamp is characterized by comprising a heat radiating substrate, a floodlight source and a condensing light source which are arranged on the upper surface of the heat radiating substrate, a light cutting mechanism for realizing the switching of the far light function and the near light function, and a light emitting lens, wherein the light emitting lens is provided with a first lens part for emitting light rays of the floodlight source and a second lens part for emitting light rays of the condensing light source, the width of the light rays emitted through the first lens part is larger than the width of the light rays emitted through the second lens part, the brightness of the light rays emitted through the first lens part is lower than the brightness of the light rays emitted through the second lens part, and the first lens part and the second lens part are arranged along the width direction of the automobile lamp, and the automobile lamp further comprises a heat radiating structure for actively radiating and/or passively radiating the heat of the automobile lamp.

2. The automotive lamp according to claim 1, wherein the floodlight source comprises a first LED emitter and a first light receiving element for receiving light from the first LED emitter, the spotlight source comprises a second LED emitter and a second light receiving element for receiving light from the second LED emitter, the first light receiving element has a collection efficiency of not less than 80% for the first LED emitter, and the second light receiving element has a collection efficiency of not less than 80% for the second LED emitter.

3. The automotive lamp of claim 2, wherein the first light receiving member is a first light reflecting cup, the first light reflecting cup is disposed above and symmetrically disposed with respect to the first LED light emitter, the second light receiving member is a second light reflecting cup, the second light reflecting cup is disposed above and symmetrically disposed with respect to the second LED light emitter, and the first light reflecting cup has a size greater than the second light reflecting cup.

4. The automotive lamp according to claim 2, wherein the light cutting mechanism comprises a cut-off line baffle and a driving member for driving the cut-off line baffle to perform position conversion, the cut-off line baffle comprises a first light cutting sheet corresponding to the floodlight source and a second light cutting sheet corresponding to the spotlight source, the light emitting surfaces of the first LED light emitter and the second LED light emitter are not higher than the vertexes of the first light cutting sheet and the second light cutting sheet, and the first light cutting sheet and the second light cutting sheet can cut light into dipped beam shapes.

5. The automotive lamp of claim 4, wherein the cutoff baffle is of an asymmetric profile, and the length of the first cut-off sheet is greater than the length of the second cut-off sheet in a direction parallel to the width of the lamp.

6. The automotive lamp according to claim 4, wherein the first light-cutting sheet comprises a first circular arc sheet and a second circular arc sheet, the second light-cutting sheet comprises a third circular arc sheet and a fourth circular arc sheet, the width of the first circular arc sheet is larger than that of the second circular arc sheet, the width of the third circular arc sheet is larger than that of the fourth circular arc sheet, the widths of the first circular arc sheet and the third circular arc sheet are identical, the widths of the second circular arc sheet and the fourth circular arc sheet are identical, the curvatures of the first circular arc sheet, the second circular arc sheet, the third circular arc sheet and the fourth circular arc sheet are identical, the first circular arc sheet is adjacent to the fourth circular arc sheet or is connected with the fourth circular arc sheet or the second circular arc sheet is adjacent to the third circular arc sheet or is connected with the third circular arc sheet, the first circular arc sheet and the second circular arc sheet are integrally formed, and/or the third circular arc sheet and the fourth circular arc sheet are integrally formed, and/or the first light-cutting sheet and the second light-cutting sheet are integrally formed.

7. The automotive lamp of claim 2, wherein the distance between the first LED emitter and the light extraction lens is less than the distance between the second LED emitter and the light extraction lens.

8. The automobile lamp according to claim 2, wherein the distance between the optical center of the first LED light emitter and the optical axis of the first lens portion is 0-4 mm, and the distance between the optical center of the second LED light emitter and the optical axis of the second lens portion is 0-4 mm.

9. The automobile lamp according to claim 2, wherein the heat dissipation structure comprises a fan, the fan is arranged at the tail part of the automobile lamp or at the bottom of the automobile lamp, the tail part of the automobile lamp is at one side deviating from the light-emitting lens, and the bottom of the automobile lamp is at one side deviating from the upper surface of the heat dissipation substrate.

10. The automotive lamp according to claim 9, wherein the first LED light emitter is mounted on a first light source copper plate and the second LED light emitter is mounted on a second light source copper plate, the first light source copper plate and the second light source copper plate are both mounted on the upper surface of the heat dissipation substrate, and the heat dissipation structure further comprises a heat dissipation assembly of a concentrated light source, the heat dissipation assembly of a concentrated light source being in contact with the upper surfaces of the first light source copper plate and the second light source copper plate.

11. The automotive lamp according to claim 10, wherein the heat-collecting and radiating component is a heat pipe component, the heat pipe component comprises a heat pipe and a connecting piece, a groove for accommodating at least part of the heat pipe is formed in the connecting piece, and the first light source copper plate and the second light source copper plate are arranged below the connecting piece and are in contact with the connecting piece and/or the heat pipe.

12. The automotive lamp of claim 11, wherein the floodlight heat dissipation assembly further comprises heat fins connected to the heat pipe, the fan is disposed at a tail of the automotive lamp, and the heat fins are disposed proximate to the fan and between the fan and the first light source copper plate and/or between the fan and the second light source copper plate.

13. An automotive lamp as claimed in any one of claims 1 to 12, characterized in that the automotive lamp further comprises a light-supplementing light source, and the light-emitting lens is provided with a third lens portion for emitting the light-supplementing light source.

14. The automotive lamp according to claim 13, wherein the number of the third lens portions is one, the third lens portions are located at the top of the light-emitting lens, and the first lens portions and the second lens portions are symmetrically arranged along the third lens portions, or the number of the third lens portions is two, the two third lens portions are located above the first lens portions and the second lens portions, respectively, or the number of the third lens portions is three or more.

15. The automotive lamp according to claim 13, wherein the first lens portion and the second lens portion are identical in size, the equivalent diameters of the first lens portion and the second lens portion are 40-50 mm, and/or the equivalent diameter of the third lens portion is 40-50 mm, and the number of the third lens portions is 2.

16. The automotive lamp according to claim 13, wherein a plane parallel to the surface of the heat radiation substrate and passing through the apexes of the first and second lens portions is taken as a reference plane, and the area of the curved surface of the first and second lens portions located below the reference plane is larger than the area of the curved surface located above the reference plane.

17. The automotive lamp as claimed in claim 13, wherein the heat dissipation structure further comprises a heat dissipation fan inclined to the upper surface of the heat dissipation substrate and located above the floodlight source and the condensing light source, and a heat dissipation body disposed above the floodlight source and the condensing light source, the heat dissipation fan is disposed in the heat dissipation body, the light supplement source is disposed on the heat dissipation body, and the light supplement source is an LED light source and/or a laser light source.

18. The automotive lamp according to claim 13, wherein the light-compensating light source is a laser light source, the number of the third lens portions is 2, and the laser light source includes:

A laser for emitting a laser beam;

A beam splitting element provided on a path of the laser beam for splitting the laser beam into a first laser beam and a second laser beam;

a first wavelength converting element disposed on a path of the first laser light, the first wavelength converting element for converting the first laser light at least partially into laser light;

a second wavelength converting element disposed on a path of the second laser light, the second wavelength converting element for converting the second laser light at least partially into laser light;

And a first lens for collecting the light emitted after the first wavelength conversion element acts and a second lens for collecting the light emitted after the second wavelength conversion element acts;

The first lens is coaxially disposed with one of the third lens portions, and the second lens is coaxially disposed with the other of the third lens portions.