CN213334186U - Head lamp - Google Patents

Abstract

The utility model relates to the field of automobile illumination, and provides a headlamp, which comprises a light source component; the lens component is connected to the light source component and used for collecting and outputting light rays from the light source component; the far and near light conversion assembly is connected to the light source assembly and positioned between the light source assembly and the lens assembly; the far and near light conversion component can move into the light path to shield at least part of light rays emitted by the far light source and part of light rays emitted by the near light source, so as to realize near light illumination; the far and near light conversion component can be moved out of the light path to realize far and near light illumination; the lens assembly can simultaneously collect and output the light rays of the low beam light source, the high beam light source and the auxiliary high beam light source so as to realize auxiliary high beam illumination. The utility model discloses the lighting needs of passing light, distance light and supplementary distance light have been satisfied, and the radiating efficiency has been improved.

Description

Head lamp

Technical Field

The utility model relates to an automotive lighting field, more specifically relates to a headlamp.

Background

The low beam light source and the high beam light source of the automobile headlamp in the prior art are respectively arranged at two sides of the heat dissipation substrate, the positions of the two light sources at the two sides of the heat dissipation substrate are basically overlapped or are very close to each other, and heat generated by the high beam light source and the low beam light source is led out through the same heat dissipation substrate. Since the heat conduction channels of the two light sources are basically overlapped, local heat accumulation can be caused, and the heat dissipation effect of the light sources is seriously influenced.

In addition, in order to improve the light collection efficiency and the optical effect of the light-emitting lens, the distance between the two light sources in the vertical direction cannot be too large, so that the thickness of a heat dissipation substrate between the far and near light sources is limited, the heat dissipation effect of the headlamp is also influenced, the temperature of the vehicle lamp is increased finally, the photoelectric efficiency of the light sources is reduced, and the service life of the headlamp is seriously influenced.

In addition, the effective illumination distance of the headlamp can only reach about 50-100 meters, so that the requirement of narrow-angle ultra-far illumination cannot be met, and the defect causes great potential safety hazard to automobiles running at high speed at night.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the short defect of above-mentioned prior art effective illumination distance, provide a head-light for realize the illuminating effect of super remote.

The technical scheme adopted by the utility model is that the headlamp comprises a light source component, which comprises a first radiating substrate and a second radiating substrate, wherein the second radiating substrate is arranged above the first radiating substrate and has a certain distance with the first radiating substrate; the first heat dissipation substrate is provided with a near light source and a high beam light source, and the second heat dissipation substrate is provided with an auxiliary high beam light source; the lens component is connected to the light source component and used for collecting and outputting light rays from the light source component; the far and near light conversion assembly is connected to the light source assembly and positioned between the light source assembly and the lens assembly; the far and near light conversion component can move into the light path to shield at least part of light rays emitted by the far light source and part of light rays emitted by the near light source, so as to realize near light illumination; the far and near light conversion component can be moved out of the light path to realize far and near light illumination; the lens assembly can simultaneously collect and output the light rays of the low beam light source, the high beam light source and the auxiliary high beam light source so as to realize auxiliary high beam illumination.

This scheme has integrated three kinds of light source systems of passing light source, distance light source, supplementary distance light source, compares prior art only the scheme of two light source systems of passing light source and distance light source, and this scheme has satisfied the lighting requirements of passing light, distance light and supplementary distance light.

The in-process of head-light when using, if need the passing light illumination, the passing light source with the distance light source is luminous simultaneously, the passing light source with the light that the distance light source sent has partial stack, the distance light changes the subassembly and moves into the light path and with the partial light that at least partial light and the passing light source sent that shelters from the distance light source and send, so that the light-emitting lens output passing light illumination. Because far and near light conversion equipment is located near the light-emitting lens focal plane, the short-distance light source with the light that far and near light source sent is sheltered from through far and near light conversion equipment after the light stack and is cut the light and then by the light-emitting lens projection formation of image, can realize the illuminating effect that has bright and dark cut-off.

If high beam illumination is required, the lens assembly collects and outputs light rays emitted by the low beam light source and the high beam light source; if the auxiliary high beam illumination is needed, the lens assembly collects and outputs the light rays of the low beam light source, the high beam light source and the auxiliary high beam light source to form high-concentration narrow-angle light beam emergence, so that the ultra-high-distance illumination effect is realized, and the light concentration degree of the automobile headlamp is improved. The effective illumination distance of the ultra-long distance illumination is at least 200 meters, and the scheme reduces the potential safety hazard that the automobile runs at high speed at night.

The scheme also separates the first heat dissipation substrate from the second heat dissipation substrate so as to separate the near light source and the far light source from the heat dissipation channel of the auxiliary far light source and reduce heat accumulation.

Preferably, the front end of the first heat dissipation substrate is recessed downwards from the upper surface to form a groove, and the groove is used for accommodating and mounting the high-beam light source; the upper surface of the rear end part of the first heat dissipation substrate is provided with the low-beam light source, and the position of the low-beam light source is higher than that of the high-beam light source. This scheme will passing light source and distance light source are all installed on the upper surface of first heat dissipation base plate, and are located on the different positions of first heat dissipation base plate, compare the condition that prior art passing light source and distance light source coincide basically or are very close to in the position of heat dissipation base plate both sides, this scheme can with passing light source and distance light source's heat dissipation channel separates, can avoid heat dissipation base plate local heat to pile up, has improved the radiating efficiency. Furthermore, the near light source and the far light source are arranged on the upper surface of the first heat dissipation substrate and are not limited by the thickness of the first heat dissipation substrate. Moreover, the first heat dissipation substrate is only improved from the structure of the first heat dissipation substrate, and a groove is formed by downwards sinking from the upper surface of the first heat dissipation substrate to accommodate and mount the high-beam light source, so that the material and the cost are greatly saved.

Preferably, the lower surface of the first heat dissipation substrate is provided with a first heat sink corresponding to the low-beam light source and the high-beam light source; or, the lower surface of the first heat dissipation substrate is provided with a first heat sink corresponding to the low beam light source and the high beam light source, the first heat sink is provided with a plurality of heat dissipation fins, main heat dissipation channels are arranged between the adjacent heat dissipation fins, and the sizes of the main heat dissipation channels are the same. This scheme has set up first radiator in order to dispel the heat with higher speed to the heat that dipped beam light source and distance light source produced, improves the radiating efficiency, simultaneously, has main radiating channel between the adjacent heat radiation fins, just main radiating channel size is the same, can make the heat dissipation even, avoid the heat local pile up with on the heat radiation fins to improve heat radiation fins's life.

Preferably, the light source assembly further comprises a base; the edge of the two sides of the lower surface of the first radiating substrate is respectively provided with a plurality of mounting columns, the mounting columns are connected to the base, and an auxiliary radiating channel is arranged between every two adjacent mounting columns. In the scheme, on one hand, the first radiating substrate is arranged on the base by the mounting column and forms a whole with other parts of the headlamp; on the other hand, this scheme direct utilization arranging of erection column for form supplementary heat dissipation channel between the adjacent erection column, with the heat dissipation with higher speed, simple and convenient. In combination with the main heat dissipation channel, the auxiliary heat dissipation channel is combined with the main heat dissipation channel, so that the heat dissipation efficiency is improved.

Preferably, the light source assembly further comprises a second heat sink, a heat conducting pipe; the second heat dissipation substrate is connected to the second heat sink through the heat conduction pipe; the second radiator is arranged at the rear end part of the first radiating substrate. This scheme separates the heat conduction passageway of supplementary distance light source and the heat conduction passageway of passing light source, distance light source the two, avoids the heat to pile up. The heat generated by the auxiliary high beam light source passes through the second heat dissipation substrate and is transferred to the second heat sink through the heat conduction pipe for heat dissipation.

Preferably, the light source module further comprises an auxiliary heat dissipation substrate, the auxiliary heat dissipation substrate is connected to the second heat dissipation substrate, the auxiliary high beam light source is arranged on one side of the second heat dissipation substrate, and the auxiliary heat dissipation substrate is partially removed to form a light through hole, so that light emitted by the auxiliary high beam light source is incident to the light source module. According to the scheme, the auxiliary heat dissipation substrate is arranged, on one hand, heat generated by the auxiliary high-beam light source can be transferred to the auxiliary heat dissipation substrate through the second heat dissipation substrate, so that the heat dissipation efficiency is improved, and heat accumulation is avoided; on the other hand, the light emitted by the auxiliary high beam light source is incident to the light source assembly through the light through hole, so that the light emitted by the auxiliary high beam light source can be prevented from being emitted to the outside.

Preferably, the second heat dissipation substrate is perpendicular to the first heat dissipation substrate, and a front end surface of the second heat dissipation substrate is flush with a front end surface of the first heat dissipation substrate; the far and near light conversion assembly comprises a far and near light conversion device and a fixed support, the far and near light conversion device is arranged on the fixed support, and the fixed support is arranged on the front end face of the first heat dissipation substrate and the front end face of the second heat dissipation substrate; the lens component is connected to the light source component through the fixed support.

Preferably, the far and near light conversion device comprises a rack, a rotating shaft, a light shielding sheet, an elastic element and an electromagnetic valve, wherein the rotating shaft is inserted into the upper end of the rack, the light shielding sheet and the elastic element are inserted into the rotating shaft, the elastic element is pressed against the light shielding sheet, the light shielding sheet is connected to the electromagnetic valve, and the rack is mounted on the fixed support; when the lamp is powered on, the shading sheet is driven by the electromagnetic valve to turn around the rotating shaft so as to move out of a light path, and high beam illumination is realized; when the power is off, the shading sheet resets under the action of the elastic element to move into the light path to shade at least partial light rays emitted by the high beam light source and partial light rays emitted by the low beam light source, so that low beam illumination is realized.

Preferably, the lens assembly comprises an exit lens and a lens holder, the lens holder is connected to the light source assembly and has an inner cavity for accommodating and mounting the exit lens; or, the lens component comprises an emergent lens and a lens bracket, the lens bracket is connected with the light source component and is provided with an inner cavity for accommodating and installing the emergent lens; the light-emitting lens comprises a first lens and a second lens, wherein a cavity is formed by the first lens except for a part of the structure of the upper end part of the first lens so as to accommodate and mount the second lens; the light emitted by the low beam light source and the high beam light source is collected and output by the first lens, and the light emitted by the auxiliary high beam light source is collected and output by the second lens. Compare the scheme that the light that the passing light source of prior art sent and the light that the distance light source sent are exported by different lenses respectively, the first lens of this scheme can export the light that the passing light source sent and the light that the distance light source sent, has saved the cost. The partial structure of upper end is got rid of in order to set up the second lens to the first lens of this scheme, so set up for first lens and second lens not coaxial, on current space basis, add the function of realizing supplementary distance light illumination, also not to space expansion, its popularization suitability is wider.

Preferably, the head lamp further comprises a fan assembly, the fan assembly comprises a fan and a housing, and the fan is arranged in the housing and is connected to the rear end of the light source assembly through the housing. This scheme has set up the fan in order to improve vehicle headlamps's radiating efficiency.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses light source subassembly, lens subassembly, far and near light transform subassembly, fan unit spare have been set up to optimize each part, satisfied the lighting needs of short-distance beam, far and near light and supplementary far and near light through having set up short-distance beam light source, far and near light source, supplementary far and near light source, through having set up first heat dissipation base plate, second heat dissipation base plate and separating near light source, far and near light source the two and supplementary far and near light source's heat dissipation passageway, avoid the heat to pile up, improve the radiating efficiency.

Drawings

Fig. 1 is an exploded view of the present invention.

FIG. 2 is a partial structural view of the light source assembly 100.

FIG. 3 is a partial structural view of the light source assembly 100.

Fig. 4 is a diagram illustrating a back structure of the first heat dissipation substrate 101.

Fig. 5 is a second diagram of the backside structure of the first heat dissipation substrate 101.

Fig. 6 is a partial structural view of the light source assembly 100.

FIG. 7 is a side view of a partial structure of the light source module 100.

Fig. 8 is a structural view of the present invention.

Fig. 9 is a diagram showing the structure of the distance and near light conversion device 301.

Fig. 10 is a second diagram of the structure of the distance and near light conversion device 301.

Fig. 11 is a plan view of the distance/near light conversion device 301.

Fig. 12 is a side view of the far and near light conversion device 301.

Fig. 13 is a front view of the distance and near light conversion device 301.

Reference numerals: the light source assembly 100, the first heat dissipation substrate 101, the groove 1011, the left side arm 1012, the right side arm 1013, the middle arm 1014, the second heat dissipation substrate 102, the low-beam light source 103, the high-beam light source 104, the auxiliary high-beam light source 105, the first heat sink 106, the main heat dissipation channel 107, the base 108, the mounting post 109, the auxiliary heat dissipation channel 110, the second heat sink 111, the heat pipe 112, the fixing cover 113, the reflective cup 114, the auxiliary heat dissipation substrate 115, the light passing hole 1151, the lens assembly 200, the light emitting lens 201, the first lens 2011, the second lens 2012, the lens bracket 202, the notch 2021, the mounting groove 203, the high-beam near-beam converter assembly 300, the high-beam near-beam converter 301, the frame 3011, the rotating shaft 3012, the light shielding sheet 3013, the elastic element 3014, the electromagnetic valve 3015, the fixing bracket 302, the fan assembly.

Detailed Description

The drawings of the present invention are for illustration purposes only and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example 1

As shown in fig. 1, the present embodiment provides a head lamp, which includes a light source assembly 100, a lens assembly 200, a distance light conversion assembly 300, and a fan assembly 400. The fan assembly 400, the light source assembly 100, the distance light conversion assembly 300 and the lens assembly 200 are sequentially arranged.

As shown in fig. 2, the light source assembly 100 includes a first heat dissipation substrate 101 and a second heat dissipation substrate 102, wherein the second heat dissipation substrate 102 is disposed above the first heat dissipation substrate 101 and has a certain distance from the first heat dissipation substrate 101. The first heat dissipation substrate 101 is provided with a low beam light source 103 and a high beam light source 104, and the second heat dissipation substrate 102 is provided with an auxiliary high beam light source 105.

Specifically, as shown in fig. 3, the first heat dissipation substrate 101 has an upper surface and a lower surface. The front end of the first heat dissipation substrate 101 is recessed downwards from the upper surface to form a groove 1011, the groove 1011 is a rectangular groove, and the groove 1011 is used for accommodating and mounting the high beam light source 104. In detail, the first heatsink base plate 101 includes a left arm 1012, a right arm 1013, and a middle arm 1014, the middle arm 1014 is located between the left arm 1012 and the right arm 1013, and the left arm 1012 and the right arm 1013 are symmetrical to each other. The recess 1011 is located on the front end of the intermediate arm 1014. In detail, the mounting position of the low beam light source 103 is higher than the mounting position of the high beam light source 104. In detail, the low beam light source 103 is mounted to the rear end portion of the intermediate arm 1014. In detail, the first heat dissipation substrate 101 may be a metal plate, a copper plate, or an aluminum plate, and the material of the first heat dissipation substrate 101 is selected according to the heat dissipation effect and the weight requirement required by the vehicle headlamp. In detail, the upper surface of the first heat dissipation substrate 101 is further provided with a reflective cup 114, as shown in fig. 2, the reflective cup 114 is an ellipsoid-like or ellipsoid-like reflective cup, and is used for reflecting the light emitted by the low beam light source 103 and the high beam light source 104 and inputting the light into the lens assembly 200.

In detail, as shown in fig. 4, in order to improve the heat dissipation efficiency, the lower surface of the first heat dissipation substrate 101 is provided with a first heat sink 106 corresponding to the low beam light source 103 and the high beam light source 104. The first heat sinks 106 may be provided in two and respectively correspond to the low-beam light sources 103 and the high-beam light sources 104 in a one-to-one manner, and the first heat sinks 106 are not limited to two. Specifically, the first heat sink 106 is a heat dissipation fin, and in order to improve heat dissipation efficiency, the heat dissipation fin is perpendicular to the first heat dissipation substrate 101, and in detail, the heat dissipation fin is perpendicular to the lower surface of the first heat dissipation substrate 101. In order to further improve the heat dissipation efficiency, the plurality of heat dissipation fins are provided, and the structure of each heat dissipation fin can be set to be the same. As shown in fig. 5, adjacent fins have a distance therebetween, and the adjacent fins have a main heat dissipation channel 107, and the main heat dissipation channel 107 may be formed by the opposite sidewalls between the adjacent fins and the lower surface of the first heat sink 106. In order to enable uniform heat dissipation, the main heat dissipation channels 107 are the same size. In detail, the heat dissipation fins in the same first heat sink 106 are arranged in parallel, and the heat dissipation fins between different first heat sinks 106 are also arranged in parallel. The heat dissipation fins are hollow, heat is transferred by evaporation and condensation of working fluid, namely working medium, and the working fluid flows in the heat dissipation fins.

In detail, in order to accelerate heat dissipation, the mounting posts 109 are respectively disposed on both side edges of the lower surface of the first heat dissipation substrate 101, that is, the mounting posts 109 are respectively disposed on the edge regions of the lower surfaces of the left side arm 1012 and the right side arm 1013. Adjacent mounting posts 109 are spaced apart. The adjacent mounting posts 109 form an auxiliary heat dissipation channel 110 therebetween, i.e., the auxiliary heat dissipation channel 110 may be formed by the opposite sidewalls between the adjacent mounting posts 109 and the lower surface of the first heat sink 106. The auxiliary heat dissipation channel 110 is obliquely arranged, an included angle between the auxiliary heat dissipation channel 110 and the main channel 107 can be 30-70 degrees, and the included angle between the auxiliary heat dissipation channel 110 and the main heat dissipation channel 107 can be changed according to the shape of the automobile headlamp. In detail, as shown in fig. 1, the light source assembly 100 further includes a base 108, and the base 108 is connected to the mounting post 109. In detail, the mounting post 109 is connected to the mounting post 109 by fastening means such as screws, bolts, or the like.

Specifically, as shown in fig. 2 and 3, the second heat dissipation substrate 102 may be a flat metal plate, and the second heat dissipation substrate 102 may be a flat copper plate. In detail, the second heat dissipation substrate 102 is disposed perpendicular to the first heat dissipation substrate 101, and a front end surface of the second heat dissipation substrate 102 is flush with a front end surface of the first heat dissipation substrate 101. The central region of the second heat dissipation substrate 102 is partially removed to form a mounting groove 203, the mounting groove 203 is a rectangular groove, and the mounting groove 203 is used for accommodating and mounting the auxiliary high beam light source 105.

In detail, in one embodiment, in order to fix the auxiliary high beam light source 105 on the second heat sink base plate 102, the light source assembly 100 is further provided with a fixing cover plate 113, and the fixing cover plate 113 is detachably connected to the front end surface of the second heat sink base plate 102. In detail, the fixing cover plate 113 may be fixed to the front end of the second heat dissipation substrate 102 by screws. Specifically, the areas of the surfaces of the fixed cover plate 113 and the second heat dissipation substrate 102 that contact each other are substantially the same. The central area of the fixed cover plate 113 is provided with a through hole for installing the auxiliary high beam light source 105, the auxiliary high beam light source 105 is a laser light source, the laser light source can be a laser tube, and the laser tube is inserted into the through hole and clamped between the fixed cover plate 113 and the second heat dissipation substrate 102.

Of course, the auxiliary high beam light source 105 can also be directly fixed on the second heat dissipation substrate 102 by fasteners such as screws and bolts.

In detail, as shown in fig. 6, the light source assembly 100 further includes an auxiliary heat dissipating substrate 115, and the auxiliary heat dissipating substrate 115 is substantially rectangular. The auxiliary heat dissipation substrate 115 is connected to the side of the second heat dissipation substrate 102 where the auxiliary high beam light source 105 is disposed, and a part of the auxiliary heat dissipation substrate 115 is removed to form a light through hole 1151, so that light emitted by the auxiliary high beam light source 105 is incident on the light source assembly 100.

It can also be said that, in an embodiment, since the fixing cover plate 113 is connected to the front end surface of the second heat dissipation substrate 102, the auxiliary heat dissipation substrate 115 is connected to the second heat dissipation substrate 102 through the fixing cover plate 113, and at the same time, the front end surface of the fixing cover plate 113 is flush with the front end surface of the second heat dissipation substrate 101.

In detail, as shown in fig. 7, the light source assembly 100 further includes a second heat sink 111 and a heat conducting pipe 112. The second heat dissipation substrate 102 is connected to the second heat sink 111 through the heat conductive pipe 112; the second heat sink 111 is disposed at a rear end of the first heat dissipation substrate 101. In detail, the second heat sink 111 is located on the upper surface of the first heat dissipation substrate 101 and behind the high beam light source 104. In detail, the at least two heat pipes 112 are disposed on two sides of the second heat dissipation substrate 102, and connect the second heat dissipation substrate 102 to the second heat sink 111. Specifically, two heat pipes 112 are disposed, symmetrically distributed on the left and right sides of the second heat dissipation substrate 102, and extend to the upper surface of the second heat sink 111. Specifically, the heat pipe 112 is substantially cylindrical, and the inside thereof is hollow, and the heat pipe transfers heat by evaporation and condensation of a working fluid, i.e., a working medium, which flows inside the heat pipe 112.

The lens assembly 200 is connected to the light source assembly 100 and is used for collecting and outputting light from the light source assembly 100. Specifically, the lens assembly 200 includes an exit lens 201 and a lens holder 202. Specifically, the lens holder 202 is substantially cylindrical, and the lens holder 202 has an inner cavity that receives and mounts the light exit lens 201, the inner cavity being substantially cylindrical. The lens holder 202 is connected to the light source assembly 100. Specifically, as shown in fig. 8, the light-exiting lens 201 includes a first lens 2011 and a second lens 2012, and a portion of the first lens 2011, which is removed from an upper end portion thereof, is configured to form a cavity to receive and mount the second lens 2012; the light emitted from the low beam light source 103 and the high beam light source 104 is collected and output by the first lens 2011, and the light emitted from the auxiliary high beam light source 105 is collected and output by the second lens 2012.

Specifically, as shown in fig. 1, the lens holder 202 is formed with a notch 2021 by removing a portion of the structure from one side edge thereof, and the notch 2021 has a substantially rectangular parallelepiped shape. When the lens holder 202 is connected to the light source assembly 100 and the assembly is completed, the auxiliary heat dissipating substrate 115 is inserted into the gap 2021.

The distance light and near light conversion assembly 300 is connected to the light source assembly 100 and located between the light source assembly 100 and the lens assembly 200. The far and near light conversion assembly 300 comprises a far and near light conversion device 301 and a fixed bracket 302, wherein the far and near light conversion device 301 is mounted on the fixed bracket 302, and the fixed bracket 302 is mounted on the front end surface of the first heat dissipation substrate 101 and the front end surface of the second heat dissipation substrate 102; the lens assembly 200 is connected to the light source assembly 100 through the fixing bracket 302. Specifically, the fixing bracket 302 is a hollow structure, and the far and near light conversion device 301 is mounted at the lower end of the fixing bracket 302. Specifically, the lens holder 202 is attached to the fixing holder 302 by a fastener such as a screw or a bolt.

In one embodiment, the fixing bracket 302 may be coupled to the front surface of the first heat dissipation substrate 101 and the front surface of the second heat dissipation substrate 102 by a fastener.

In one embodiment, the fixing bracket 302 may be coupled to the front surface of the first heat dissipation substrate 101 and the front surface of the fixing cover plate 113 by a fastener.

Specifically, as shown in fig. 9, 10, 11, 12, and 13, the far and near light conversion device 301 includes a frame 3011, a rotation shaft 3012, a light shielding sheet 3013, an elastic element 3014, and an electromagnetic valve 3015. The rotating shaft 3012 is inserted into the upper end of the frame 3011. The light-shielding sheet 3013 is arc-shaped, the light-shielding sheet 3013 is provided with two symmetrical through holes, and the rotating shaft 3012 is inserted into the two through holes of the light-shielding sheet 3013, so that the light-shielding sheet 3013 rotates around the rotating shaft. In order to enable the light-shielding sheet 3013 to reset, an elastic element 3014 is inserted on one side of the rotation shaft 3013, and the elastic element 3014 is pressed against the light-shielding sheet 3013. In detail, the elastic element 3014 is a hinge spring. The shading sheet 3013 is connected to the electromagnetic valve 3015, and the frame 3011 is mounted on the fixing bracket 302.

When the lamp is powered on, the shading sheet 3013 is turned over around the rotating shaft 3012 under the driving of the electromagnetic valve 3015 to move out of a light path, so as to realize high beam illumination; when the power is off, the light shielding sheet 3013 is reset under the action of the elastic element 3014 to move into the light path, so as to shield at least part of the high beam and part of the low beam and realize low beam illumination.

As shown in fig. 1, the fan assembly 400 includes a fan 401 and a housing 402, wherein the fan 401 is disposed in the housing 402 and is connected to the rear end of the light source assembly 100 through the housing 402. Specifically, there may be one fan 401. The fan 401 is mounted on the first heat dissipation substrate 101, and specifically, the fan 401 is mounted at the rear end of the first heat dissipation substrate 101. The housing 402 is generally rectangular.

In one embodiment, the fan 401 is located at the rear end of the first heat sink 106; the main heat dissipation channel 107 is arranged towards the direction of the fan 401; when the fan 401 is operated, the airflow of the fan 401 flows to the auxiliary heat dissipating channel 110 through the main heat dissipating channel 107 to accelerate heat dissipation. The direction indicated by the arrow "←" in the figure is the direction of the air flow.

In one embodiment, the first heat sink 106 and the second heat sink 111 are symmetrically disposed about the first heat dissipation substrate 101, or the second heat sink 111 is disposed at the rear end of the first heat dissipation substrate 101 and on the upper surface of the first heat dissipation substrate 101. The fan 401 is located at the rear end of the first heat sink 106 and the second heat sink 111, and accelerates heat dissipation of the first heat sink 106 and the second heat sink 111. When the fan 401 is operated, the airflow of the fan 401 flows to the auxiliary heat dissipation channel 110 through the main heat dissipation channel 107 to accelerate heat dissipation; meanwhile, the airflow of the fan 401 flows out through the secondary heat dissipation channel to accelerate heat dissipation.

In the use of the headlamp, the low beam light source 103 and the high beam light source 104 are normally on. After the light generated by the low-beam light source 103 and the light generated by the high-beam light source are reflected by the reflecting cup 114, both the lights are emitted out of the light-emitting lens 201. The high beam and low beam switching in this embodiment is realized by the light shielding sheet 3013.

When high beam illumination is required, the shading sheet 3013 is driven by the solenoid valve 3015 to turn around the rotating shaft 3012 to move out of the optical path, so as to implement high beam illumination, and at this time, the first lens 2011 collects and outputs the light beams from the low beam light source 103 and the high beam light source 104. When low-beam illumination is required, the light shielding sheet 3013 is reset under the action of the elastic element 3014 to move into the light path, so as to shield at least part of the light emitted by the high-beam light source 104 and part of the light emitted by the low-beam light source 103, thereby realizing low-beam illumination. When the auxiliary high beam light illuminates, the low beam light source 103, the high beam light source 104, and the auxiliary high beam light source 105 emit light simultaneously, the first lens 2011 collects and outputs light from the low beam light source 103 and the high beam light source 104, and the second lens 2012 collects and outputs light from the auxiliary high beam light source 105.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not limitations to the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (12)

1. A head lamp, characterized by comprising

The light source assembly (100) comprises a first heat dissipation substrate (101) and a second heat dissipation substrate (102), wherein the second heat dissipation substrate (102) is arranged above the first heat dissipation substrate (101) and has a certain distance with the first heat dissipation substrate (101); a low-beam light source (103) and a high-beam light source (104) are arranged on the first heat dissipation substrate (101), and an auxiliary high-beam light source (105) is arranged on the second heat dissipation substrate (102);

a lens assembly (200) connected to the light source assembly (100) and used for collecting and outputting light rays from the light source assembly (100);

a distance light and near light conversion assembly (300) connected to the light source assembly (100) and located between the light source assembly (100) and the lens assembly (200); the distance light and near light conversion component (300) can move into the light path to shield at least part of light rays emitted by the distance light source (104) and part of light rays emitted by the near light source (103) so as to realize near light illumination; the far and near light conversion component (300) can be moved out of the light path to realize far light illumination;

the lens assembly (200) can simultaneously collect and output light rays of the low beam light source (103), the high beam light source (104) and the auxiliary high beam light source (105) so as to realize auxiliary high beam illumination.

2. A headlamp according to claim 1, wherein the front end portion of the first heat dissipating substrate (101) is recessed downward from the upper surface to form a recess (1011), and the recess (1011) is adapted to receive and mount the high beam light source (104); the low-beam light source (103) is mounted on the upper surface of the rear end of the first heat dissipation substrate (101), and the position of the low-beam light source (103) is higher than that of the high-beam light source (104).

3. A headlamp according to claim 2, wherein a first heat sink (106) is provided on the lower surface of the first heat dissipating substrate (101) in correspondence with the low beam light source (103) and the high beam light source (104).

4. A headlamp according to claim 3, wherein the first heat sink (106) is provided with a plurality of radiator fins and adjacent radiator fins have primary heat dissipation channels (107) therebetween, the primary heat dissipation channels (107) being of the same size.

5. A headlamp according to claim 1, wherein said light source assembly (100) further comprises a base (108); the edge of two sides of the lower surface of the first heat dissipation substrate (101) is respectively provided with a plurality of mounting columns (109), the mounting columns (109) are connected to the base (108), and auxiliary heat dissipation channels (110) are arranged between adjacent mounting columns (109).

6. A headlamp according to claim 1, wherein said light source assembly (100) further comprises a second heat sink (111), a heat conducting tube (112); the second heat dissipation substrate (102) is connected to the second heat sink (111) through the heat conductive pipe (112); the second heat sink (111) is disposed at a rear end portion of the first heat dissipation substrate (101).

7. A head lamp according to claim 1, wherein the light source module (100) further comprises an auxiliary heat-dissipating substrate (115), the auxiliary heat-dissipating substrate (115) is connected to the side of the second heat-dissipating substrate (102) where the auxiliary high beam light source (105) is located, and a portion of the auxiliary heat-dissipating substrate (115) is removed to form a light-passing hole (1151) so that the light emitted from the auxiliary high beam light source (105) is incident on the light source module (100).

8. A headlamp according to claim 1, wherein the second heat dissipating substrate (102) is perpendicular to the first heat dissipating substrate (101), and a front end surface of the second heat dissipating substrate (102) is flush with a front end surface of the first heat dissipating substrate (101); the far and near light conversion assembly (300) comprises a far and near light conversion device (301) and a fixed support (302), wherein the far and near light conversion device (301) is installed on the fixed support (302), and the fixed support (302) is installed on the front end face of the first heat dissipation substrate (101) and the front end face of the second heat dissipation substrate (102); the lens assembly (200) is connected to the light source assembly (100) through the fixing bracket (302).

9. The headlamp according to claim 8, wherein the distance and near light conversion device (301) comprises a frame (3011), a rotating shaft (3012), a light shielding sheet (3013), an elastic element (3014), and a solenoid valve (3015), the rotating shaft (3012) is inserted into an upper end of the frame (3011), the rotating shaft (3012) is inserted with the light shielding sheet (3013) and the elastic element (3014), the elastic element (3014) is pressed against the light shielding sheet (3013), the light shielding sheet (3013) is connected to the solenoid valve (3015), and the frame (3011) is mounted on the fixed support (302);

when the LED high-beam illumination lamp is powered on, the shading sheet (3013) is turned over around the rotating shaft (3012) under the driving of the electromagnetic valve (3015) to move out of a light path, and high-beam illumination is achieved; when the power is off, the shading sheet (3013) resets under the action of the elastic element (3014) to move into a light path, at least partial light emitted by the high beam light source (104) and partial light emitted by the low beam light source (103) are shaded, and low beam illumination is realized.

10. A headlamp according to claim 1, wherein the lens assembly (200) comprises an exit lens (201) and a lens holder (202), the lens holder (202) being connected to the light source assembly (100) and having an inner cavity to receive and mount the exit lens (201).

11. A headlamp according to claim 10, wherein the light-emitting lens (201) comprises a first lens (2011) and a second lens (2012), and the first lens (2011) has a portion of its upper end removed to form a cavity for receiving and mounting the second lens (2012); the light emitted by the low beam light source (103) and the high beam light source (104) is collected and output by the first lens (2011), and the light emitted by the auxiliary high beam light source (104) is collected and output by the second lens (2012).

12. A headlamp according to any of claims 1 to 11, further comprising a fan assembly (400), wherein said fan assembly (400) comprises a fan (401), a housing (402), said fan (401) being arranged inside said housing (402) and being connected to the rear end of said light source assembly (100) through said housing (402).

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