CN113834034A

CN113834034A - LED motorcycle headlamp

Info

Publication number: CN113834034A
Application number: CN202111410161.4A
Authority: CN
Inventors: 刘丽芳; 余剑银; 赵努伟; 江明明; 许煜
Original assignee: Ningbo Longjia Power Technology Co ltd
Current assignee: Ningbo Longjia Power Technology Co ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2021-12-24

Abstract

The invention discloses an LED motorcycle headlamp, which comprises a lamp holder and a lampshade at the cavity opening of the lamp holder, wherein a high beam lamp component, a low beam lamp component and a front position lamp component are arranged in the cavity of the lamp holder, the positions and the matching relation of the front position lamp component, the high beam lamp component and the low beam component are redesigned, and the brightness requirement of a daytime running lamp can be met by adjusting the brightness of the front position lamp bead and the low beam lamp bead under the structure, so that the integration of low beam, high beam, front position lamp indication and daytime indication is realized, and the high beam, the low beam and the front position lamp are respectively provided with relatively independent light distribution systems, so that the light distribution effect is good, the whole structure of the scheme is simplified, the assembly is convenient, in addition, the depth direction of an optical system is shortened, and the processing precision is reduced.

Description

LED motorcycle headlamp

Technical Field

The invention relates to the technical field of lamp devices, in particular to an LED motorcycle headlamp.

Background

The motorcycle headlamp is one of important safety protection parts of a motorcycle, and is a part which is arranged at the head of a motorcycle body and is used for lighting and warning during the night driving process of the motorcycle. Currently, the existing motorcycle headlamp integrates the functions of a high beam, a low beam and a front position lamp, but does not have the function of a daytime running lamp.

The existing mainstream high-low beam integrated headlamp is usually realized by a light distribution mode of a projection lens type or a single reflector, although the brightness can meet the requirement, the LED is exposed to influence the appearance, the processing precision is difficult to guarantee due to the overlong depth direction of an optical system, the heat dissipation pressure is large due to the overhigh power of the LED, and the like, and the technical problems need to be improved.

Disclosure of Invention

In order to solve at least one technical defect, the invention provides the following technical scheme:

the application document discloses LED motorcycle head-light, lamp shade including lamp stand and lamp stand cavity mouth department, the intracavity of lamp stand sets up high beam subassembly, passing lamp subassembly, preceding position banks spare, and wherein the passing lamp subassembly includes passing lens, lens hood and passing lamp pearl, the high beam subassembly includes high beam reflector one and high beam lamp pearl, its characterized in that: still include base plate and far-reaching reflector two, wherein preceding position banks spare includes light band, leaded light strip and preceding position lamp pearl, set up near light lamp pearl on the base plate, the left and right side relative position of near light lamp pearl sets up preceding position lamp pearl respectively to and preceding, rear side relative position set up far-reaching reflector pearl respectively, preceding position lamp pearl owner light-emitting direction sets gradually leaded light strip, light band, near light lens are arranged in the ring chamber of light band, leaded light strip and its income plain noodles and near light lamp pearl owner light-emitting direction corresponds, near light lens global sets up the lens hood, is close to set up far-reaching reflector one in the lamp stand intracavity of far-reaching reflector pearl, the main light-emitting direction of far-reaching reflector pearl sets up far-reaching reflector two to far-reaching reflector one is reflected with the light of far-reaching lamp pearl to far-reaching reflector two.

Near light lamp pearl is controlled on the base plate in this scheme, position lamp pearl before the upper and lower side is installed respectively, high beam lamp pearl, carry out the low beam light with passing lens cooperation near light lamp pearl, preceding position lamp pearl cooperation light band, the leaded light strip carries out preceding position light instruction, and the printing opacity is located the light band, leaded light strip ring chamber and with the lens hood stop the miscellaneous light, and the lamp stand intracavity of neighbouring high beam lamp pearl installs high beam reflector one, and with high beam reflector two with the luminous reflection of high beam lamp pearl to high beam reflector one, reflection to lamp stand chamber mouth light-emitting then, the hidden of lamp pearl is luminous to secondary reflection light-emitting realized, have more aesthetic property and secondary grading and improve the utilization ratio of light, the grading is more meticulous.

This scheme redesign front position banks spare, the position and the cooperation relation of distance light banks spare and passing light subassembly, and the luminance demand of going the lamp in daytime can be satisfied through adjusting front position lamp pearl, the luminance of passing light lamp pearl under this structure, realize the passing light, the distance light, the integration is instructed and the going in daytime to the front position lamp, and the distance light, passing light and front position lamp possess relatively independent grading system respectively, the grading is effectual, this scheme overall structure simplifies, convenient assembling, in addition because of shortened optical system's depth direction, processing precision reduces.

Further, the lamp holder cavity is internally provided with a boss, the boss is provided with a base plate, the positions of the upper side and the lower side of the boss are respectively provided with a forming groove, and a first high-beam reflector is arranged in the forming groove.

Furthermore, the side wall of the first high-beam reflector, which is close to the high-beam lamp beads, is provided with a light inlet hole, a second high-beam reflector is arranged on a substrate corresponding to the light inlet hole, the second high-beam reflector is arc-shaped, the high-beam lamp beads are arranged on an intracavity substrate surrounded by the second high-beam reflector, light outlets of the second high-beam reflector correspond to the light inlet hole, and shielding sheets are arranged on the boss walls corresponding to the lower sides of the light outlets of the high-beam reflector.

Further, the tip play plain noodles of passing through optical lens sets up a plurality of light distribution faces, the light distribution face is including the arcwall face that is located the centre and the wave face that relative arcwall face symmetry set up, and constitutes the bellying of wave face all faces the arcwall face slope, rational design light distribution face, through passing through optical lens refraction and light distribution face distribution back, can not directly come under the plantago under the car, illuminate road surface and pedestrian that gos forward, and the light and shade cut-off line is clear, and the light transition is even.

Furthermore, the lens hood is cylindrical and is sleeved and fixed on the peripheral wall of the light-emitting surface of the dipped lens, a gap exists between the lens hood and the substrate, the sleeving and fixing mode is favorable for quick installation, and the gap between the lens hood and the substrate is favorable for air flow to avoid heat accumulation.

Preferably, the peripheral stabilizer blade that sets up of nearly optical lens's income plain noodles, the stabilizer blade with lamp stand chamber wall is fixed, and the structure of extension stabilizer blade helps realizing that the clearance formula is fixed between lens hood and the base plate, and conveniently assembles through the stabilizer blade, if fixed with the boss, fixes through preforming or screw etc..

Further, the light guide strip is annular and transparent, the light incident surfaces arranged at the two opposite ends of the light guide strip correspond to the front lamp bead, the part between the light incident surfaces at the two opposite ends is a cylinder arched by a preset curvature, and light guide teeth are arranged on the surface of the cylinder arched by the light guide strip, which corresponds to the substrate; the light band is annular transparent, the middle part of the light band is arched with a preset curvature, a plurality of square light distribution surfaces are arranged on the light emergent surface of the arched part, light rays emitted by the front lamp beads enter from the light guide teeth and are emitted through the cylindrical surface to enter the light band, the light rays are emitted after passing through the light distribution surfaces, and the light emitting effect of the square light distribution surfaces is in a square lattice array, uniform and attractive.

Furthermore, the light-emitting cavity department of lamp stand sets up the dress escutcheon and covers with the lamp shade cage, the centre of dress escutcheon corresponds the position of printing opacity mirror, leaded light strip to and the position department that corresponds high beam reflector one in upper and lower both sides all sets up the hole, increases the dress escutcheon in order to improve the aesthetic property.

Furthermore, the both ends of light band are fixed with the dress escutcheon, leaded light strip and lamp stand chamber wall are fixed, convenient equipment.

The lamp holder is characterized by further comprising a constant current source, a rear cover and an outlet plug-in unit, wherein the constant current source is arranged at the bottom of the lamp holder and sealed by the rear cover, the outlet plug-in unit is in butt joint with the constant current source, the end part of the outlet plug-in unit extends out of an opening in the rear cover, and the constant current source is connected with the substrate.

The constant current source is added in the scheme to effectively avoid current drift caused by temperature rise, avoid large light attenuation of the LED and ensure stable light output of the LED, and the rear cover is sealed and the outlet plug-in is added to facilitate butt joint with a peripheral power circuit and the like.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention redesigns the positions and the matching relation of the high beam lamp assembly, the low beam lamp assembly and the front position lamp assembly, simplifies the whole structure, has more aesthetic property and realizes the four-position integration of high beam, low beam, front position indication and daytime running indication.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a first perspective view of an LED motorcycle headlamp provided by an embodiment of the present invention;

FIG. 2 is a second perspective view of an LED motorcycle headlamp provided by an embodiment of the present invention;

FIG. 3 is an exploded view of an LED motorcycle headlamp provided by an embodiment of the present invention;

FIG. 4 is a schematic longitudinal cross-sectional view of an LED motorcycle headlamp provided in accordance with an embodiment of the present invention;

fig. 5 is a schematic front view angle structure diagram of a dipped headlight assembly provided by an embodiment of the invention;

FIG. 6 is a schematic view of the transverse cross-sectional configuration of FIG. 5;

FIG. 7 is a perspective view of a low beam assembly;

FIG. 8 is a schematic view of a front view of a forward position lamp assembly;

FIG. 9 is a schematic view of the transverse cross-sectional configuration of FIG. 8;

FIG. 10 is a perspective view of a forward light assembly;

FIG. 11 is a schematic view of the front view angle configuration of a high beam light assembly;

FIG. 12 is a schematic cross-sectional view of FIG. 11;

FIG. 13 is a perspective view of a high beam lamp assembly;

FIG. 14 is a schematic diagram of the connection between the substrate and the constant current source according to the embodiment of the present invention;

FIG. 15 is a schematic view of a front view angle fitting structure of a low beam assembly and a front position assembly according to an embodiment of the present invention;

FIG. 16 is a schematic cross-sectional view of FIG. 15;

FIG. 17 is a schematic cross-sectional view of FIG. 15;

fig. 18 is a schematic structural view of a low beam assembly and a front light assembly provided in an embodiment of the present invention in a three-dimensional manner;

FIG. 19 is a schematic view of a headlamp according to an embodiment of the present invention, shown in a top down view with the cover removed;

fig. 20 is a schematic view of a boss structure in a lamp socket;

wherein the reference numerals are:

1. a lamp socket; 2. a lamp shade; 3. a dipped headlight assembly; 4. a substrate; 5. a forward light assembly; 6. a high beam lamp assembly; 8. A constant current source; 9. lens pressing; 10. a rear cover; 11. a seal ring; 12. an outgoing line plug-in unit; 13. a decorative frame; 14. a boss;

31. a low beam lens; 32. a light shield; 31 a; an arc-shaped surface; 31b, a boss; 33. a dipped beam lamp bead; 34. a support leg;

51. a light band; 51a, a light distribution surface; 52. A light guide strip; 52a, a light incident surface; 52b, a cylindrical surface; 52c, light guide teeth; 53. A front lamp bead;

61. a high beam reflector I; 62. a high beam lamp bead; 63. a second high beam reflector; 64. a shielding sheet.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

Example 1

Referring to fig. 1-4, the LED motorcycle headlamp comprises a cylindrical lamp holder 1 with an inner cavity, a lampshade 2 fixedly mounted at an upper cavity opening of the lamp holder 1, a dipped headlight assembly 3, a high beam assembly 6 and a front position light assembly 5 mounted in the inner cavity of the lamp holder 1, wherein the dipped headlight assembly 3 comprises a dipped lens 31, a light shield 32 and a dipped headlight bulb 33, the high beam assembly 6 comprises a high beam reflector 61, a high beam reflector 63 and a high beam bulb 62, and the front position light assembly 5 comprises a light band 51, a light guide strip 52 and a front position lamp bulb 53. Wherein as shown in fig. 20, the center of the inner cavity of the lamp holder 11 protrudes the forming boss 14, the aluminum substrate 4 is fixed on the boss 14, the center of the substrate 4 is provided with a low beam lamp bead, the upper and lower side substrates 4 are symmetrically provided with high beam lamp beads 62, the upper and lower side substrates 4 are symmetrically provided with front position lamp beads 53, the whole lamp beads on the substrate 4 are distributed in a cross shape, and the low beam lamp beads 33 are positioned at the center of the cross shape.

In this embodiment, the low-beam lens 31 is installed in the main light emitting direction of the low-beam lamp bead, that is, along the axial direction of the lamp holder 1, as shown in fig. 3 to 7, in this embodiment, 7 light distribution surfaces are respectively disposed on the light emitting surface of the head end portion of the low-beam lens 31, wherein the middle position is an arc surface 31a, two opposite sides of the arc surface 31a are symmetrically formed into continuous wavy surfaces respectively, each wavy surface is composed of 3 protrusions 31b, the cross section is a cone, each protrusion 31b is inclined toward the arc surface 31a, as shown in fig. 5 and 7, the inclination angle of each protrusion is adjusted as required, in this embodiment, light emitted by the low-beam lamp bead 33 enters from the light incident surface at the tail end of the low-beam lens 31, and a clear cut-off line is formed through parallel projection. In order to avoid the parasitic light interference, the cylindrical light shield 32 is sleeved on the circumferential surface below the head end, in this embodiment, as shown in fig. 7, the upper portion of the circumferential wall of the low beam lens protrudes outward, corresponds to the formed caulking groove of the cavity wall of the light shield, and is fixed in a concave-convex matching manner, or is fixed by means of screws, glue, and the like, and directly embeds the low beam lens into the cavity of the light shield, and the like, and the number, the shape, and the like of the light distribution surfaces can be adjusted as required.

As shown in fig. 3 and 7, a plurality of legs 34 are formed by extending downward from the periphery of the tail end of the dipped lens, for example, 4 legs are L-shaped, as shown in fig. 7, the top surface of the boss 14 of the corresponding upper two legs 34 is formed with a groove, the lens-shaped pressing sheet 9 is fixed at the groove position after being embedded into the groove, the convex column is formed at the position corresponding to the lower two legs 34, the lower two legs are fixed with the convex column after being abutted, and the lower two legs are fixed with the convex column through screws and the like. In addition, the aluminum lamp holder 1 may be used, heat dissipation ribs are formed at positions on the back surface of the lamp holder 1, for assisting heat dissipation, the aluminum substrate 4 is used, heat conduction paste is filled between the substrate 4 and the boss 14, and the heat dissipation ribs and the heat conduction paste are commonly used for heat dissipation, which is not described herein.

In this embodiment, as shown in fig. 3, 8, 9, 10, 15, 16, 17, 18, and 19, the light band 51 and the light guide strip 52 of the front light assembly 5 both adopt a closed ring structure, and the light emitting direction of the front light bead 53, i.e. the light guide strip 52 and the light band 51 made of transparent materials are sequentially installed in the axial direction of the parallel lamp holder 1 in this embodiment, the low beam lens is located in the ring openings of the light band 51 and the light guide strip 52, the position of the two ends of the light guide strip 52 corresponding to the front light bead 53 is the light incident surface 52a, and enters the light incident surface and then enters the light band 51 and emits light, and the lens hood is wrapped outside the low beam lens to avoid the mutual interference of light.

In this embodiment, the portion between the light incident surfaces 52a at the two ends of the light guide bar 52 is a cylinder arched according to a predetermined curvature, the light guide teeth 52c are uniformly arranged on the back surface of the arched cylinder, i.e. the surface facing the substrate 4, and the light enters the light guide bar 52 from the light incident surface, and is reflected multiple times by the light guide teeth 52c, and finally is uniformly refracted out from the cylindrical surface 52b on the front surface. The light strip 51 is arranged in front of the light guide strip 52, the middle part of the light strip 51 is also arched according to a preset curvature, and a plurality of square light distribution surfaces 51a are formed on the front surface of the arched part, as shown in fig. 3, 10 and 19, light rays emitted by the light strip 51 are refracted by the square light distribution surfaces on the front surface and then emitted, and the light emitting effects are arranged into a square lattice array, so that the light strip is uniform and attractive.

In this embodiment, as shown in fig. 11 to 13, as shown in fig. 3 and 19, the bowl-shaped first high beam reflectors 61 in the high beam assembly 6 are installed on the upper and lower sides of the boss 14, that is, the high beam lamp beads 62 are installed below the corresponding installation sides, in the groove enclosed by the boss 14 and the cavity wall of the lamp holder 1, the forming support legs, the threaded columns and the like on the bottom wall of the first high beam reflector 61 are fixedly installed on the cavity wall of the lamp holder 1, the light inlet is opened on the cavity wall of the first high beam reflector 61 adjacent to the high beam lamp beads 62, the second high beam reflector 63 is installed at the position of the high beam lamp beads 62, and is arc-shaped, for example, an 1/4 ellipsoid, the high beam lamp beads 62 are located in the cavity enclosed by the second high beam reflectors 63, and the light outlet of the second high beam reflector 63 corresponds to the light inlet, so that the light emitted by the high beam lamp beads 62 is reflected toward the cavity of the lamp holder 1 after being reflected by the second high beam reflector 63. In order to avoid stray light interference, a shielding piece 64 can be further installed on the wall of the boss 14 below the light outlet of the second high-beam reflector 63 to synchronously shield the high-beam lamp beads 62, a welding point, an outgoing line and the like, and therefore attractiveness is improved.

In this embodiment, the light-emitting cavity department of lamp stand 1 fixes dress escutcheon 13 and covers with lamp shade 2, as shown in fig. 3, fig. 19, dress escutcheon 13's centre corresponds the light-transmitting mirror, the position of leaded light strip 52, and both sides correspond the equal trompil of position department of a high beam reflector 61 in order to make things convenient for the light-emitting, under this structure, can be fixed leaded light strip 52 and dress escutcheon 13, it is fixed with the corresponding tip of leaded light strip 52 if dress escutcheon 13 diapire and leaded light strip 52, can select at dress escutcheon 13 diapire shaping stabilizer blade, parts such as L type buckle, the corresponding light strip 51 tip position shaping mounting hole, the draw-in groove etc., it is fixed with stabilizer blade and mounting hole cooperation with the screw, with modes such as buckle embedding draw-in groove is fixed, select as required. The light guide strip 52 has mounting holes formed at the positions of the light incident surfaces at the two ends, and is fixed with the wall of the lamp holder 1 cavity through screws and the like, so that the assembly is convenient.

For the installation of the decoration frame 13, the periphery of the decoration frame 13 can be fixed in the groove formed on the end surface of the cavity opening of the lamp holder 1 through glue solution, and the fixing points of the components such as the light band 51, the light guide strip 52 and the like are independent, so that the assembly and the forming are convenient.

In this embodiment, as shown in fig. 14, fig. 2, and fig. 3, the constant current source 8 is installed at the bottom of the lamp holder 1 and sealed by the rear cover 10, preferably, a groove is formed on the boss 14 corresponding to the bottom surface of the lamp holder 1, the constant current source 8 is installed in the groove, the outlet plug 12 is butted with the constant current source 8, and the end of the outlet plug extends out of the hole on the rear cover 10, so that the cable inside the lamp can be led out of the lamp body and connected to the circuit of the whole vehicle, and the constant current source 8 is electrically connected to the substrate 4 to control the power supply input to each lamp bead. In addition, still can set up sealing washer 11 between back lid 101 and lamp stand 1, water-proof effects is good, can guarantee that the electric environment of constant current source 8 is stable.

In this embodiment, the first high beam reflector 61 and the second high beam reflector 63 have reflecting surfaces that are paraboloids with precise light distribution, and the surfaces are vacuum aluminized to reflect light rays in parallel after receiving the light rays.

To far-reaching headlamp pearl 62, selection of passing light lamp pearl 33 and preceding position lamp pearl 53, preferred LED lamp pearl, select in this embodiment to use far-reaching headlamp pearl to be 2 LED of 3 chips, passing light lamp pearl is 1 LED of 4 chips, preceding position lamp is the LED of 2 single-chips, above quantity is according to luminous mode and required luminance selection, can guarantee that the luminance of riding is suitable, again can more the power saving, can not cause too big burden for whole car magnet motor, certainly also can change quantity according to the demand.

When the front lamp needs to be used, the LED front lamp bead 53 is turned on, light emitted by the LED front lamp bead 53 is refracted out through the light guide strip 52 and the secondary optical system of the light band 51, and uniform and attractive light is emitted, so that pedestrians and road vehicles can find themselves as early as possible.

When needs use the passing lamp, open LED passing lamp pearl, the light that LED passing lamp pearl sent is through passing lens refraction play, can not directly shine under the opposite side car front, illuminates road surface and pedestrian that advances.

When the high beam lamp is needed, the LED high beam lamp beads 62 are turned on, light rays emitted by the LED high beam lamp beads 62 are emitted after secondary reflection through the second high beam reflector 63 and the first high beam reflector 61, the light rays are concentrated and have high brightness, and remote pedestrians, vehicles, guideboards and the like can be illuminated.

When the daytime running light needs to be used, the LED front lamp beads 53 and the LED near lamp beads 33 are turned on, the luminous brightness is adjusted to enable the emitted light to increase the visibility of the daytime running light, the occurrence rate of traffic accidents is reduced, and for the adjustment of the luminous brightness, if the near light is 13.3W alone, the front lamp is 2.94W alone, the near light is 3.2W during the daytime running light, and the front lamp is 2.94W to meet the requirement of the daytime running light on brightness.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides a LED motorcycle head-light, includes lamp stand (1) and lamp shade (2) of lamp stand (1) cavity mouth department, set up distance light subassembly (6), passing lamp subassembly (3), front position banks spare (5) in the intracavity of lamp stand (1), wherein passing lamp subassembly (3) are including passing lens (31), lens hood (32) and passing lamp pearl (33), distance light subassembly (6) are including high beam reflector one and high beam lamp pearl (62), its characterized in that: the LED lamp also comprises a substrate (4) and a second high-beam reflector (63), wherein the front lamp assembly (5) comprises a light band (51), a light guide strip (52) and a front lamp bead (53), a low-beam lamp bead (33) is arranged on the substrate (4), the front lamp bead (53) is arranged at the left side and the right side of the low-beam lamp bead (33) respectively, and the high-beam lamp bead (62) is arranged at the upper side and the lower side respectively, the light guide strip (52) and the light band (51) are sequentially arranged in the main light emitting direction of the front lamp bead (53), the low-beam lens (31) is positioned in the annular cavity of the light band (51) and the light guide strip (52), the light inlet surface of the low-beam lens corresponds to the main light emitting direction of the low-beam lamp bead (33), a light shield (32) is arranged on the peripheral surface of the low-beam lens (31), the first high-beam reflector (61) is arranged in the cavity of the lamp holder (1) adjacent to the high-beam lamp bead (62), the high-beam reflector (63) is arranged in the main light emitting direction of the high-beam reflector (62), and reflecting the light of the high beam lamp beads (62) to the high beam reflector I (61) by a high beam reflector II (63).

2. The LED motorcycle headlamp of claim 1, characterized in that: the lamp holder (1) is internally provided with a boss (14), the boss (14) is provided with a substrate (4), the upper side and the lower side of the boss (14) are provided with forming grooves, and a first high-beam reflector (61) is arranged in the grooves.

3. An LED motorcycle headlamp as claimed in claim 2, wherein: the side wall of the first high-beam reflector (61) adjacent to the high-beam reflector beads (62) is provided with a light inlet hole, a second high-beam reflector (63) is arranged on the substrate (4) corresponding to the light inlet hole, the second high-beam reflector (63) is arc-shaped, the high-beam reflector beads (62) are arranged on the substrate (4) in the cavity surrounded by the second high-beam reflector (63), the light outlet of the second high-beam reflector (63) corresponds to the light inlet hole, and a shielding sheet (64) is arranged on the wall of the boss (14) corresponding to the lower side of the light outlet of the high-beam reflector.

4. The LED motorcycle headlamp of claim 1, characterized in that: the tip of passing light lens (31) goes out the plain noodles and sets up a plurality of light-matches faces, the light-matches face is including being located middle arcwall face (31 a) and the wave face that sets up relatively arcwall face symmetry, and constitutes the bellying (31 b) of wave face all face arcwall face (31 a) slope.

5. The LED motorcycle headlamp of claim 4, wherein: the light shield (32) is cylindrical and is sleeved and fixed on the peripheral wall of the light-emitting surface of the dipped-beam lens (31), and a gap is formed between the light shield (32) and the substrate (4).

6. An LED motorcycle headlamp as claimed in claim 5, wherein: the periphery of the light incident surface of the dipped beam lens (31) is provided with a support leg (34), and the support leg (34) is fixed with the cavity wall of the lamp holder (1).

7. The LED motorcycle headlamp of claim 1, characterized in that: the light guide strip (52) is annular and transparent, the light incident surfaces (52 a) arranged at two opposite ends of the light guide strip (52) correspond to the front lamp beads (53), the part between the light incident surfaces (52 a) at the two ends is a cylinder arched by a preset curvature, and light guide teeth (52 c) are arranged on the surface, corresponding to the substrate (4), of the arched part of the cylinder of the light guide strip (52); the optical band (51) is annular transparent, the middle part of the optical band (51) is arched with a preset curvature, and a plurality of square light distribution surfaces (51 a) are arranged on the light emergent surface of the arched part.

8. The LED motorcycle headlamp of claim 1, characterized in that: the light-emitting cavity department of lamp stand (1) sets up dress escutcheon (13) and covers with lamp shade (2) cage, the position that corresponds printing opacity mirror, leaded light strip (52) in the middle of dress escutcheon (13) to and both sides correspond the position department of far-reaching reflecting mirror (61) and all set up the hole.

9. The LED motorcycle headlamp of claim 8, wherein: the two ends of the light belt (51) are fixed with the decoration frame (13), and the light guide strip (52) is fixed with the cavity wall of the lamp holder (1).

10. The LED motorcycle headlamp of claim 1, characterized in that: still include constant current source (8), back lid (10), plug-in components (12) of being qualified for the next round of competitions, the bottom of lamp stand (1) sets up constant current source (8) and after lid (10) seal, just the plug-in components of being qualified for the next round of competitions just stretch out in the trompil on lid (10) after with constant current source (8) butt joint and the tip of the plug-in components of being qualified for the next round of competitions, constant current source (8) with base plate (4) are connected.