A bicycle lamp with high-low light switching function

Abstract

The utility model provides a bicycle lamp with high -low light switching function, including an LED light source group and a special lens, the LED light source group includes a low beam light source and a high beam light source, the special lens includes a lens main body, an entrance light surface, an exit light surface and a light collecting surface, the entrance light surface includes an auxiliary entrance light part, when the low beam light source is opened, the auxiliary entrance light part and the light collecting surface will gather the scattered light, the bicycle lamp with high -low light switching function through the setting low beam light source and the high beam light source and the special lens, the light of low beam light source or high beam light source forms a low beam light spot group or high beam light spot group on the horizontal ground, through the setting auxiliary entrance light part, can gather the light of light source as far as possible, forms effective illumination light.

Description

Technical Field

[0001] This invention belongs to the field of lighting technology, specifically a bicycle lamp with high / low beam switching function. Background Technology

[0002] With the development of the times, a healthy lifestyle has gradually become a trend, and more and more people are cycling to and from get off work, while many others choose to cycle to the suburbs for relaxation on weekends. Bicycles often need to be equipped with bicycle lights to compensate for their lack of built-in lighting. Because the primary source of illumination while cycling relies on bicycle lights, people have high requirements for the functionality and brightness of these lights.

[0003] Existing bicycles often only offer one type of beam, either high beam or low beam, which fails to perfectly adapt to various environments. When long-distance illumination is needed, the only solution is to change the direction of the headlights. However, this reduces the amount of light reaching nearby objects, affecting close-range illumination. Furthermore, light emitted from the light source is scattered when it hits and passes through the lens, failing to be fully focused for effective illumination. Summary of the Invention

[0004] In view of this, the present invention provides a bicycle light with high / low beam switching function to meet industrial needs.

[0005] A bicycle light with high / low beam switching function includes an LED light source assembly and an irregularly shaped lens disposed in the optical path of the LED light source assembly. The LED light source assembly includes a low beam source and a high beam source. The low beam source is positioned above the high beam source in a direction perpendicular to the horizontal plane. The low beam source includes a low beam optical axis. The irregularly shaped lens includes a lens body, a light-incident surface disposed on one side of the lens body and facing the LED light source assembly, a light-exit surface disposed on the other side of the lens body and facing away from the LED light source assembly, and a light-concentrating surface surrounding the side of the lens body. The light-incident surface includes a main light-incident portion disposed in the center of the light-incident surface and an auxiliary light-incident portion disposed around the main light-incident portion. The auxiliary light-incident portion and the main light-incident portion form a light-incident cavity. The opening of the light-incident cavity is funnel-shaped. The profile of the light-incident surface in a cross-section along the near-optical axis and perpendicular to the horizontal plane includes a main light-incident arc and two auxiliary light-incident arcs symmetrically arranged along the near-optical axis. The convex direction of both the main and auxiliary light-incident arcs faces outwards from the lens body. The light-emitting surface includes a first light-emitting portion located at its center, a second and a third light-emitting portion surrounding the first light-emitting portion, and a fourth light-emitting portion disposed between the first and second / third light-emitting portions and used to converge light rays. The first light-emitting portion includes an upper light-emitting portion and a lower light-emitting portion. The profile of the first light-emitting portion in a cross-section along the near-optical axis and perpendicular to the horizontal plane includes an upper light-emitting arc and a lower light-emitting arc. The upper light-emitting arc convexes outwards from the lens body. The lower light-emitting arc convexes inwards towards the lens body. The outline of the second light-emitting portion in a cross-section along the near-optical axis and perpendicular to the horizontal plane includes a second light-emitting arc. The outline of the third light-emitting portion includes a third light-emitting arc. The second light-emitting arc protrudes outward from the lens body. The third light-emitting arc protrudes inward toward the lens body. In use, the light-emitting portions, from top to bottom, are the second light-emitting portion, the upper and lower light-emitting portions of the first light-emitting portion, and the third light-emitting portion. The focusing surface is an annular surface. In a cross-section along the near-optical axis and perpendicular to the horizontal plane, the outline of the focusing surface includes a pair of symmetrical focusing lines along the near-optical axis. One end of each of the two focusing lines is close to the near-optical axis, so that the focusing lines are funnel-shaped with the opening direction aligned with the light emission direction. When the near light source is turned on, the auxiliary light source and the focusing surface gather the scattered light and emit it from the second light source, the third light source, and the fourth light source to form a main illumination area spot and a near light band on the ground.

[0006] Furthermore, the low beam light source and the high beam light source each include at least one LED chip. The high beam light source has a high beam optical axis. The low beam optical axis and the high beam optical axis are parallel to each other. In use, the high beam optical axis is located above the low beam optical axis, and their projections on the horizontal plane coincide.

[0007] Furthermore, all of the LED chips are controlled by a control circuit to emit light.

[0008] Furthermore, the control circuit includes a positive electrode point, a negative electrode point, and a common electrode point connected in series between the two Zener diodes. The low beam light source is connected in series between the positive electrode point and the common electrode point, and the high beam light source is connected in series between the negative electrode point and the common electrode point. The positive electrode point and the common electrode point are each connected in parallel with a power supply, and the negative electrode point and the power supply electrode point are each connected in parallel with another power supply, so that the low beam light source and the high beam light source are controlled to emit light.

[0009] Furthermore, the control circuit includes two independent positive electrode points and two negative electrode points corresponding to the two positive electrode points respectively. The low beam light source and the high beam light source are connected in series between a pair of positive electrode points and negative electrode points to emit light in a controlled manner.

[0010] Furthermore, the low beam light source and the high beam light source are each connected in parallel with a Zener diode.

[0011] Furthermore, the bicycle lamp includes a lamp housing, which includes a main housing, a front cover disposed at one end of the main housing, and an inner liner disposed inside the main housing. The irregularly shaped lens is disposed inside the lamp housing, and the inner liner and the front cover are interlocked to hold the irregularly shaped lens inside the lamp housing.

[0012] Furthermore, the inner lining has at least two light-transmitting openings on its side, and each light-transmitting opening has a side-transmitting feature to allow light from the irregularly shaped lens to pass through.

[0013] Furthermore, a sealing ring is provided between the irregularly shaped lens and the front cover.

[0014] Compared with existing technologies, the bicycle light with high / low beam switching function provided by the present invention, through the setting of a low beam source and a high beam source, and a shaped lens, wherein the shaped lens includes a first light-emitting part, a second light-emitting part, a third light-emitting part, and a fourth light-emitting part, so that the light emitted by the low beam source or the high beam source forms a low beam light spot group or a high beam light spot group on the horizontal ground after passing through the light-emitting part, respectively. The low beam light spot group and the high beam light spot group have different shapes and positions, thereby meeting different usage needs. By setting an auxiliary light-injecting part, the light emitted by the light source can be collected as much as possible, and by setting a focusing surface to concentrate the scattered light and adjust the angle, an effective illumination light is formed and passes through the light-emitting part. Attached Figure Description

[0015] Figure 1 This is an exploded view of a bicycle lamp with high / low beam switching function provided in the first embodiment of the present invention.

[0016] Figure 2 for Figure 1 A cross-sectional view of the irregularly shaped lens of a bicycle headlight.

[0017] Figure 3 for Figure 1 A schematic diagram of the light spot of an irregularly shaped lens in a bicycle headlight.

[0018] Figure 4 for Figure 1 The circuit diagram of the control circuit for bicycle lights.

[0019] Figure 5 The circuit diagram of a bicycle lamp with high / low beam switching function provided in the second embodiment of the present invention. Detailed Implementation

[0020] The following provides a more detailed description of specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the scope of protection of the present invention.

[0021] The following is one embodiment of this example, such as... Figures 1 to 3The diagram shows a structural schematic of a bicycle lamp with high / low beam switching function provided by the present invention. The bicycle lamp with high / low beam switching function includes a lamp housing 10, an LED light source group 20 installed within the lamp housing, an irregularly shaped lens 30 disposed on the light path of the LED light source group 20 to adjust the light emitted by the LED light source group 20, and a light switching switch 40 for controlling the light emission state of the LED light source group 20. The lamp also includes other functional modules, such as a power supply for providing power to the LED light source group 20, etc., which should be known to those skilled in the art and will not be described in detail here.

[0022] The lamp housing 10 includes a main housing 11, a front cover 12 disposed at one end of the main housing 11, and an inner liner 13 disposed inside the main housing 11. The inner liner 13 cooperates with the front cover 12 to securely fix the irregularly shaped lens 30 inside the main housing 11. Two light-transmitting openings 14 are formed on the side of the inner liner 13, and two side windows 15 are provided at each light-transmitting opening 14 to allow some light from the irregularly shaped lens 30 to pass through. A sealing ring 16 is provided between the irregularly shaped lens 30 and the front cover 12.

[0023] The LED light source group 20 includes a low beam light source 21, a high beam light source 22, and a control circuit 23 for controlling the emission of the low beam light source 21 and the high beam light source 22. Both the low beam light source 21 and the high beam light source 22 are LED chips. In use, the low beam light source 21 is located above the high beam light source 22. The low beam light source 21 has a low beam optical axis 211, and correspondingly, the high beam light source 22 also has a high beam optical axis 221. In use, the low beam optical axis 211 is located at the top of the high beam optical axis 221, and the two are parallel to each other and located in the same vertical plane. Both the low beam light source 21 and the high beam light source 22 are LED chips, i.e., light-emitting diodes, which are technical terms well-known to those skilled in the art and therefore can be directly interchanged.

[0024] It should be noted that the specific structure of the control circuit 23 can vary depending on actual needs. In this application, the control circuit 23 has two structures. In this embodiment, the control circuit 23 uses one of these structures.

[0025] In this embodiment, the control circuit 23 is as follows: Figure 4As shown, it includes a positive electrode 231, a negative electrode 232, a low beam source 21 and a high beam source 22 connected in series between the positive electrode 231 and the negative electrode 232, two Zener diodes 234 connected in parallel with the low beam source 21 and the high beam source 22 respectively, and a common electrode 233 connected in series between the low beam source 21 and the high beam source 22. The positive electrode 231 and the common electrode are each connected in parallel with a power source, and the negative electrode 232 and the common electrode are each connected in parallel with another power source, thereby providing power to the low beam source 21 and the high beam source 22 respectively. By controlling the current flow in the circuits containing the two power sources, it is possible to achieve only the low beam source 21 emitting light, or the low beam source 21 and the high beam source 22 emitting light simultaneously, or both extinguishing simultaneously. The Zener diodes 234 can stabilize the voltage across the low beam source 21 and the high beam source 22 respectively, ensuring stable light emission. Since the low beam light source 21 and the high beam light source 22 share a common electrode point 233, it is convenient to integrate the two circuits on the same circuit board.

[0026] It should be noted that there is no limit to the number of low beam and high beam sources. All low beam sources 21 are connected in series, and all high beam sources 22 are connected in series. An appropriate number of low beam sources 21 and high beam sources 22 can be selected according to actual needs.

[0027] The irregularly shaped lens 30 includes a lens body 31, an incident light surface 32, an exit light surface 33, and a focusing light surface 34 for receiving a portion of the light emitted from the incident light surface 32 and reflecting that portion of the light to the exit light surface 33.

[0028] The light-incident surface 32 includes a main light-incident section 321 located in the center of the light-incident surface, and an auxiliary light-incident section 322 surrounding the main light-incident section 321. The main light-incident section 321 and the auxiliary light-incident section 322 can collect light rays emitted from the LED light source group 20 from different directions and adjust the light rays to different positions. The main light-incident section 321 is mainly used to collect light rays whose outgoing direction is horizontal or approximately horizontal with the near-optical axis, while the auxiliary light-incident section 322 collects divergent light rays whose outgoing direction has a large angle with the near-optical axis and performs subsequent processing. In a cross-section along the near-optical axis and perpendicular to the horizontal plane, the outline of the light-incident surface 32 includes a main light-incident section arc 3211 and two auxiliary light-incident section arcs 3221 symmetrically arranged along the near-optical axis. The convex direction of both the main light-incident section arc 3211 and the auxiliary light-incident section arc 3221 faces outward away from the lens body. The light-incident surface 32 is formed by rotating and scanning the arc-shaped line 3211 of the main light-incident portion and the arc-shaped line 3221 of the auxiliary light-incident portion around the near-light optical axis. The main light-incident portion and the auxiliary light-incident portion are respectively convex lens-shaped. It should be noted that the specific description of the contour line can be found in [reference needed]. Figure 2 or Figure 3 As shown in these two figures, the subsequent outline descriptions can also be referenced.

[0029] The light-emitting surface 33 includes a first light-emitting part 331 disposed in the middle of the light-emitting surface 33, a second light-emitting part 332 and a third light-emitting part 333 disposed around the first light-emitting part 331, and a fourth light-emitting part 334 disposed between the first light-emitting part 331 and the second light-emitting part 332 and the third light-emitting part 333.

[0030] The first light-emitting section 331 includes an upper light-emitting section 3311 and a lower light-emitting section 3312. In use, the upper light-emitting section 3311 is located above the lower light-emitting section 3312. In a cross-section along the near-optical axis and perpendicular to the horizontal plane, the outline of the first light-emitting section 331 includes an upper light-emitting arc 3313 and a lower light-emitting arc 3314. The first light-emitting section 331 is formed by scanning the upper light-emitting arc 3313 and the lower light-emitting arc 3314 along a straight line perpendicular to the near-optical axis and on the same horizontal plane as the near-optical axis. The upper light-emitting arc 3313 protrudes outward from the lens body 31, and the lower light-emitting arc 3314 protrudes inward toward the lens body 31.

[0031] The second light-emitting part 332 and the third light-emitting part 333 are respectively located on the upper and lower sides of the plane containing the near-light optical axis, with the horizontal plane as the dividing line. In use, the second light-emitting part 332 is located above the third light-emitting part 333. In a cross-section along the near-light optical axis and perpendicular to the horizontal plane, the outline of the second light-emitting part 332 includes a second light-emitting part arc 3321, and the third light-emitting part 333 includes a third light-emitting part arc 3331. The arc direction of the second light-emitting part arc 3321 protrudes outward from the light-emitting surface, and the arc direction of the third light-emitting part arc 3331 protrudes inward towards the light-emitting surface. Both the second light-emitting section 332 and the third light-emitting section 333 are semi-annular. The second light-emitting section 332 and the third light-emitting section 333 are respectively formed by scanning a straight line perpendicular to the near-optical axis and in the same plane as the near-optical axis, along the arc lines 3321 and 3331 of the second and third light-emitting sections, respectively. The boundary between the second light-emitting section 332 and the third light-emitting section 333 is stepped. The second light-emitting section 332 is a convex lens, and the third light-emitting section 333 is a concave lens. Most of the light rays incident on the second light-emitting section 332 and the third light-emitting section 333 are focused and adjusted light rays through the focusing surface.

[0032] The fourth light-emitting part 334 is disposed between the first light-emitting part 331, the second light-emitting part 332, and the third light-emitting part 333 as a transition section. The fourth light-emitting part 334 is annular, and an annular focusing part is formed on the outside of the annular body. In a cross-section along the near-optical axis and perpendicular to the horizontal plane, the annular focusing part includes a pair of annular focusing arcs 3341 symmetrical along the near-optical axis. The arc shape of the annular focusing arcs 3341 protrudes away from the lens body, and the end of the annular focusing arcs 3341 away from the lens body 31 is deflected toward the near-optical axis, so that an angle is formed between the two annular focusing arcs 3341. The fourth light-emitting part 334 is a convex lens.

[0033] After passing through various parts of the light-emitting surface 33, the light is adjusted by the lens shape of each part of the light-emitting surface 33 to form illumination areas of different shapes and sizes. These illumination areas include a low-beam light spot group 50 formed on the horizontal ground by the light emitted from the low-beam light source after passing through the light-emitting part 33, and a high-beam light spot group 60 formed on the horizontal ground by the light emitted from the high-beam light source after passing through the light-emitting part 33. It should be noted that, in addition to the light spots mentioned in the specification, the light passing through the light-emitting surface 33 may also form other scattered beams of light on the horizontal surface that are difficult to distinguish with the naked eye. Since these are not easily distinguishable to the naked eye and have no reference value in actual use, they will not be described in detail here.

[0034] like Figure 3 As shown, the left column is a front view of the irregularly shaped lens and a schematic diagram of each light-emitting surface. The middle column shows the shapes of the light spots projected onto the ground by each part when the light source is a low-beam light source, while the right column shows the shapes of the light spots when the light source is a high-beam light source. It should be noted that since the high-beam and low-beam light sources differ only in height, those skilled in the art can easily deduce the shape of the light spot projected by the high-beam light source from the light spot projected by the low-beam light source. Therefore, only the shape of the high-beam light spot group 60 is labeled in the figure.

[0035] When only the near beam source is on: the light emitted from the first light-emitting part 331 will form an approximately trapezoidal first light spot 51 on the ground, extending from near to far. The width of the first light spot 51 continuously increases as it extends from near to far. The first light spot 51 has the largest illumination area and the beam is evenly distributed, which can illuminate a large area in front during actual use.

[0036] The light emitted from the second light-emitting part 332 will form a second light spot 52, which is approximately rectangular and located at a distance, and a first light band 53, which extends from the near point to the far point, on the ground. The shortest distance between the first light band and the lens is greater than the shortest distance between the first light spot 51 and the lens. The second light spot 52 can provide illumination at a distance, while the first light band 53 can provide strong illumination from the center forward.

[0037] The light emitted from the third light-emitting section 333 will form an approximately trapezoidal third light spot 54 on the ground at a distance. The shortest distance between the third light spot 54 and the lens is greater than the shortest distance between the first light strip 53 and the lens. The third light spot 54 mainly provides illumination over a medium distance.

[0038] The light emitted from the fourth light-emitting section 334 will form a roughly rectangular fourth light spot 55 on the ground at a distance. The size of the fourth light spot 55 is larger than the size of the second light spot 52. The shortest distance of the fourth light spot 55 from the lens is greater than the shortest distance of the third light spot 54 from the lens. The fourth light spot 55 provides primary distant illumination.

[0039] The first light spot 51, the second light spot 52, the first light band 53, the third light spot 54, and the fourth light spot 55 are superimposed on each other on the ground to form the near-beam light source spot group 50. The near-beam light source spot group includes a main illumination area at a distance and a near-beam light band, thereby enabling the illumination of a large area in the foreground and at a distance while providing stable illumination at a distance.

[0040] When the low beam light source and the high beam light source are turned on at the same time, since the optical axes of the low beam light source and the high beam light source are not on the same horizontal plane, the light spot generated by the high beam light source after passing through the light-emitting surface 33 has a certain deformation compared with that generated by the low beam light source.

[0041] Compared to the near-beam light source spot 50, the far-beam light source spot 60 has a narrower width, a greater minimum distance from the lens, and a greater maximum distance from the lens. Therefore, the far-beam light source spot can provide illumination at a greater distance while also ensuring a certain level of near-field illumination.

[0042] The focusing surface 34 is an annular surface surrounding the outer side of the lens body. In a cross-section along the near-optical axis and perpendicular to the horizontal plane, the outline of the focusing surface 34 includes a pair of symmetrically distributed focusing lines 341 along the near-optical axis. The ends of the focusing lines closest to the near-optical surface are respectively close to the near-optical axis, so that the two focusing lines 341 form an angle. The focusing surface 34 is formed by scanning the focusing lines along the near-optical axis. The main source of light entering the focusing surface 34 is the light emitted from the LED light source group, which, after illuminating the auxiliary light source, is adjusted by the auxiliary light source. The focusing surface 34 reflects this portion of light, which is then emitted from the second light-emitting section 332, the third light-emitting section 333, and the fourth light-emitting section 334.

[0043] like Figure 1-3 The diagram shown is a structural schematic of a bicycle lamp with high / low beam switching function provided in the second embodiment of the present invention. The bicycle lamp with high / low beam switching function includes a lamp housing 10, an LED light source group 20 installed in the lamp housing, an irregularly shaped lens 30 disposed on the light path of the LED light source group to adjust the light emitted by the LED light source group 20, and a light switching switch 40.

[0044] The lamp housing 10, the irregularly shaped lens 30, and the light switching switch 40 have the same functions and structures as the bicycle lamp of the first embodiment that can reduce heat dissipation light, and will not be described again here.

[0045] like Figure 5The diagram shown is a circuit diagram of a bicycle light with high / low beam switching function provided in the second embodiment of the present invention. The LED light source group 70 includes at least one low beam light source 72, at least one high beam light source 71, and a control circuit 73. The control circuit 73 includes a pair of first positive and negative electrode points 74 disposed at both ends of the low beam light source 72, a pair of second positive electrode points 75 disposed at both ends of the high beam light source 71, and two Zener diodes 76 connected in parallel with the low beam light source 72 and the high beam light source 71, respectively. The wiring directions of the low beam light source 72 and the high beam light source 71 are opposite to those of the Zener diodes 76. By switching the voltage of the corresponding electrode points on or off, the low beam light source 72 can be turned on and the high beam light source 71 can be turned off, or the low beam light source 72 and the high beam light source 71 can be turned on or off simultaneously. In this embodiment, the circuits of the low beam light source 72 and the high beam light source 71 do not overlap and can be respectively disposed on a single circuit board, thereby facilitating maintenance and replacement.

[0046] It should be noted that there is no limit to the number of low-beam and high-beam light sources; all low-beam light sources are connected in series, and all high-beam light sources are connected in series. An appropriate number of low-beam and high-beam light sources can be selected according to actual needs.

[0047] During use, different light sources can be selectively activated via the light switch 40. The low beam light source is always on when the headlights are in use, forming a low beam spot 50 on the ground to provide illumination for both near and far objects, meeting most needs. When the high beam light source is activated, it firstly increases the overall brightness of the illumination, and also forms a high beam spot 60 to provide illumination over a greater distance, meeting the requirements for high beams.

[0048] Compared with existing technologies, the bicycle light with high / low beam switching function provided by the present invention, through the setting of a low beam source and a high beam source, and the irregularly shaped lens, the irregularly shaped lens including a first light-emitting part 331, a second light-emitting part 332, a third light-emitting part 333, and a fourth light-emitting part 334, allows the light emitted by the low beam source or the high beam source to form a low beam light spot group or a high beam light spot group on the horizontal ground after passing through the light-emitting part 33, respectively. The low beam light spot group and the high beam light spot group have different shapes and positions, thereby meeting different usage needs. By setting an auxiliary light-inlet part 322, the light emitted by the light source can be collected as much as possible, and by setting a focusing surface 34, the scattered light is gathered and the angle is adjusted to form effective illumination light that passes through the light-emitting part 33.

[0049] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions or improvements within the spirit of the present invention are covered within the scope of the claims of the present invention.

Claims

1. A bicycle light with high / low beam switching function, characterized in that: The bicycle light with high / low beam switching function includes an LED light source group and an irregularly shaped lens disposed in the optical path of the LED light source group. The LED light source group includes a low beam light source and a high beam light source. The low beam light source is disposed above the high beam light source in a direction perpendicular to the horizontal plane. The low beam light source includes a low beam optical axis. The irregularly shaped lens includes a lens body, an incident light surface disposed on one side of the lens body and facing the LED light source group, an exit light surface disposed on the other side of the lens body and facing away from the LED light source group, and a focusing light surface surrounding the side of the lens body. The light-incident surface includes a main light-incident portion disposed in the middle of the light-incident surface, and an auxiliary light-incident portion disposed around the main light-incident portion. The auxiliary light-incident portion and the main light-incident portion form a light-incident cavity. The opening of the light-incident cavity is funnel-shaped. On the cross-section along the near-optical axis and perpendicular to the horizontal plane, the outline of the light-incident surface includes a main light-incident portion arc and two auxiliary light-incident portion arcs symmetrical along the near-optical axis. The protrusion direction of the main light-incident portion arc and the auxiliary light-incident portion arc is outward away from the lens body. The light-emitting surface includes a first light-emitting section disposed at the center of the light-emitting surface, a second light-emitting section and a third light-emitting section disposed around the first light-emitting section, and a fourth light-emitting section disposed between the first light-emitting section and the second and third light-emitting sections for converging light. The first light-emitting section includes an upper light-emitting section and a lower light-emitting section. In a cross-section along the near-optical axis and perpendicular to the horizontal plane, the outline of the first light-emitting section includes an upper light-emitting section arc and a lower light-emitting section arc. The upper light-emitting section arc is away from the lens body. The lower light-emitting part bulges outwards, and the arc of the lower light-emitting part bulges inwards toward the lens body. On the cross-section along the near-optical axis and perpendicular to the horizontal plane, the outline of the second light-emitting part includes a second light-emitting part arc, and the outline of the third light-emitting part includes a third light-emitting part arc. The second light-emitting part arc bulges outwards away from the lens body, and the third light-emitting part arc bulges inwards toward the lens body. In use, the light-emitting surface from top to bottom consists of the second light-emitting part, the lower light-emitting part and the upper light-emitting part of the first light-emitting part, and the third light-emitting part. The focusing surface is an annular surface. On the cross-section along the near-optical axis and perpendicular to the horizontal plane, the outline of the focusing surface includes a pair of focusing straight lines symmetrical along the near-optical axis. One end of each of the two focusing straight lines is close to the near-optical axis, so that the focusing straight lines are in a trumpet shape with the opening direction consistent with the light emission direction. When the low beam light source is turned on, the auxiliary light source and the focusing surface gather the scattered light and emit it from the first light source, the second light source, the third light source, and the fourth light source to form a low beam light source spot group on the ground with a distant main illumination area and a low beam light band.

2. The bicycle light with high / low beam switching function as described in claim 1, characterized in that: The low beam light source and the high beam light source each include at least one LED chip. The high beam light source has a high beam optical axis. The low beam optical axis and the high beam optical axis are parallel to each other. In use, the high beam optical axis is located above the low beam optical axis and their projections on the horizontal plane coincide with each other.

3. The bicycle light with high / low beam switching function as described in claim 2, characterized in that: All of the LED chips are controlled by a single control circuit to emit light.

4. The bicycle light with high / low beam switching function as described in claim 3, characterized in that: The low beam source and the high beam source are each connected in parallel with a Zener diode. The control circuit includes a positive electrode point, a negative electrode point, and a common electrode point connected in series between the two Zener diodes. The low beam source is connected in parallel between the positive electrode point and the common electrode point, and the high beam source is connected in parallel between the negative electrode point and the common electrode point. The positive electrode point and the common electrode point are each connected in parallel with a power supply, and the negative electrode point and the common electrode point are each connected in parallel with another power supply, so that the low beam source and the high beam source emit light in a controlled manner.

5. The bicycle light with high / low beam switching function as described in claim 3, characterized in that: The control circuit includes two independent positive electrode points and two negative electrode points corresponding to the two positive electrode points respectively. The low beam light source and the high beam light source are connected in series between a pair of positive electrode points and negative electrode points to emit light in a controlled manner.

6. The bicycle light with high / low beam switching function as described in claim 1, characterized in that: The bicycle light includes a lamp housing, which includes a main housing, a front cover disposed at one end of the main housing, and an inner liner disposed inside the main housing. The irregularly shaped lens is disposed inside the lamp housing, and the inner liner and the front cover are interlocked to hold the irregularly shaped lens inside the lamp housing.

7. The bicycle light with high / low beam switching function as described in claim 6, characterized in that: The inner lining has at least two light-transmitting openings on its side, and each light-transmitting opening has a side-transmitting feature to allow light from the irregularly shaped lens to pass through.

8. The bicycle light with high / low beam switching function as described in claim 6, characterized in that: A sealing ring is provided between the irregularly shaped lens and the front cover.

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