Self-balancing headlamp and vehicle

Abstract

A self-balancing headlamp comprises a supporting base, a driving unit and a lighting unit, the lighting unit is used for generating lighting light distribution, one end of the driving unit is fastened to the supporting base, and the other end of the driving unit is fastened to the supporting base. The lighting unit is far away from the supporting base and sequentially comprises a radiator, a first PCB (Printed Circuit Board), a first reflector, a second PCB, a second reflector, a shading bracket, a lens and a lens bracket. The LED lamp is characterized in that the lens is provided with a low-beam light emitting unit and a high-beam light emitting unit; wherein the low-beam light-emitting unit comprises a first low-beam light-emitting unit and a second low-beam light-emitting unit, and the lens curvature of the first low-beam light-emitting unit is smaller than that of the second low-beam light-emitting unit. According to the self-balancing headlamp, the self-balancing headlamp can be always parallel to the ground when turning along with the two-wheeled vehicle, so that a low beam light type with a cut-off line parallel to the ground is irradiated.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle lamps, and in particular relates to a self-balancing headlamp and a vehicle. Background Art

[0002] Two-wheeled vehicles (such as motorcycles, electric motorcycles, electric cars, etc.) are equipped with headlights at the front of the vehicle, which can provide lighting in poor light conditions, thereby providing the driver with a clear view of the road ahead. However, when turning, the headlights will turn to the inside of the turn with the vehicle, and when turning, the lighting distribution of the headlights will also rotate with the headlights, which will cause a blind spot in the front of the inside, especially at night when the road conditions in front of the inside of the turn are not clear, and there will be glare on the outside of the turn, which may cause danger.

[0003] When existing two-wheeled vehicles, such as motorcycles, turn on the road, most of them compensate for the turn by adding additional light sources. For example, the invention patent with the announcement number "CN217455814U" and the patent name "Optical group with high beam compensation" has two high beam light sources, which will have two disadvantages: 1. The additional light source needs to increase the additional power; 2. The additional light source also needs to increase the additional control, and it is not possible to compensate for a specific turning area, that is, it is not possible to always keep the cutoff line parallel to the road surface. The light type compensation beyond the cutoff line will cause glare, especially on the inside of the turn. If a pedestrian suddenly appears on the inside of the turn, and the pedestrian cannot avoid the glare of the vehicle compensation, it will cause serious consequences. Specifically, when the motorcycle is driving on a curve, the vehicle will tilt, and the original lighting system of the motorcycle will have a reduced light paving area, affecting the driver's visual range, especially the high beam. The driver experiences more high beam compensation, and the low beam compensation will end in an instant of turning, but when turning, what is more needed is the road condition farther away from the direction after the turn. Summary of the invention

[0004] In view of the above-mentioned prior art, the purpose of the present invention is to provide a self-balancing headlamp to solve the above problems.

[0005] In the first aspect, the present application provides a self-balancing headlamp, comprising a supporting base, a driving unit and a lighting unit, wherein the lighting unit is used to generate a lighting light distribution, one end of the driving unit is fastened to the supporting base, and the lighting unit is away from the supporting base and comprises a heat sink, a first PCB board, a first reflector, a second PCB board, a second reflector, a shading bracket, a lens and a lens bracket in sequence, characterized in that: the lens has a low beam output unit and a high beam output unit; wherein the low beam output unit comprises a first low beam output unit and a second low beam output unit, and the lens curvature of the first low beam output unit is smaller than the lens curvature of the second low beam output unit.

[0006] Preferably, the lens has a light incident surface and a light emitting surface, the cross section and the longitudinal section of the light emitting surface are both curved surfaces, and can collimate light in at least two directions, wherein the two directions are perpendicular to each other.

[0007] Preferably, the first reflector has a plurality of reflective bowls, and the number of the reflective bowls is equal to the sum of the number of the first low-beam light emitting units and the second low-beam light emitting units.

[0008] Preferably, a reflective surface of each reflective bowl of the first reflector corresponds to the first low-beam light emitting unit or the second low-beam light emitting unit.

[0009] Preferably, the reflecting surface of the reflective bowl is any one of a parabola, a quasi-parabola, an ellipsoid and a quasi-ellipsoid, and the reflecting surface can direct the light emitted by the light source to the lens in parallel.

[0010] Preferably, the heat sink is an aluminum profile, which is formed by extending the shape of the cross section and has a plurality of evenly distributed heat dissipating fins.

[0011] Preferably, the driving unit is a motor. Specifically, the motor includes a DC motor, an AC motor, a stepper motor, a servo motor, or a brushless motor.

[0012] Preferably, the self-balancing headlight also includes a gyroscope and a control unit, wherein the gyroscope is disposed on the control unit and is used to detect the tilt angle of the self-balancing headlight and feed back the tilt angle to the control unit, and the control unit is used to receive the tilt angle fed back by the gyroscope and control the drive unit to rotate the same angle in the opposite direction of the rotation angle.

[0013] Preferably, the self-balancing headlamp further comprises a base shell and a lampshade; the lampshade is fastened to the base shell and defines a containing cavity together with the base shell, and the containing cavity is used to contain the supporting base, the driving unit, the lighting unit and the control unit.

[0014] In a second aspect, a vehicle is provided, comprising a vehicle body and the self-balancing headlamp of the first aspect, wherein the self-balancing headlamp is fastened to the vehicle body. Compared with the prior art, this solution has the following beneficial effects: The headlight is fixed to the front of the vehicle. When the vehicle is driving, the internal structural parts of the headlight often need to withstand 10G vibration. The farther the motor drives the lens, the greater the driving force needs to be, which also causes greater losses to the motor. At the same time, the bracket connecting the outermost lens and the motor is also relatively long, which may cause grinding or even breakage under long-term vibration. The driving unit of this solution directly fixes the lighting unit, allowing the lighting unit to rotate with less torque.

[0015] The lens modulates the light according to the position to generate a light pattern unit, and the brightness is increased by superimposing multiple light pattern units. The low beam light pattern produced in this way is more uniform, overcoming the defects of the splicing method that leads to obvious stratification of bright and dark areas and general visual effect. The pins of the radiator and the high beam reflector bowl work together to block the low beam light source and control the amount of stray light, making the outline of the low beam light pattern clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other objects, features and advantages of the embodiments of the present invention will become more easily understood through the following detailed description with reference to the accompanying drawings, in which several embodiments of the present invention will be described by way of example and not limitation, wherein: Figure 1 is an exploded view of a self-balancing headlamp provided by an embodiment of the present invention; Figure 2 A cross-sectional view of a self-balancing headlamp provided by an embodiment of the present invention; Figure 3 A schematic diagram of a lens provided by an embodiment of the present invention; Figure 4 A schematic diagram of another viewing angle of a lens provided by an embodiment of the present invention; Figure 5 A schematic diagram of a low beam PCB board provided in an embodiment of the present invention; Figure 6 A schematic diagram of a low beam solution provided by an embodiment of the present invention; Figure 7-Figure 10 Schematic diagrams of low beam patterns generated by three low beam light sources provided in embodiments of the present invention and a final low beam pattern generated by superposition. DETAILED DESCRIPTION

[0017] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0022] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0023] A motor, also known as an electric motor, is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. A motor usually includes a stator and a rotor. The stator includes a stator core and a coil winding wound on the stator core. The rotor includes a rotating shaft and a rotor core sleeved on the rotating shaft. A permanent magnet is provided on the outer edge of the rotor core.

[0024] like Figure 1-5 As shown, the self-balancing headlamp includes a support base 1, a driving unit 2 and a lighting unit 3, wherein the lighting unit 3 is used to generate lighting light distribution, one end of the driving unit 2 is fastened to the support base 1, and the lighting unit 3 includes a heat sink 31, a first PCB board 32, a low beam light source 321, a first reflector 33, a second PCB board 34, a high beam light source 341, a second reflector 35, a light shielding bracket 36, a lens 37 and a lens bracket 38 away from the support base 1, and the lens 37 has a low beam light output unit 371 and a high beam light output unit 372. Among them, the low beam light output unit 371 includes a first low beam light output unit 3711 and a second low beam light output unit 3712, and the lens curvature of the first low beam light output unit 3711 is smaller than the lens curvature of the second low beam light output unit 3712. The lens 37 is formed by injection molding.

[0025] Among them, the first PCB board 32 is a low beam PCB board, and the second PCB board 34 is a high beam PCB board. The low beam PCB and the high beam PCB respectively have corresponding peripheral electrical structures of the low beam light source 321 and the high beam light source. The models and connection forms of their components are common knowledge in the field and are irrelevant to the content of this application. This application will not be further disclosed here.

[0026] A high-beam reflector 35 is provided corresponding to the high-beam light source, and the lens 37 includes a high-beam light emitting unit 372. The lens 37 is located on the light emitting side of the high-beam reflector 372, and each high-beam light source generates a high-beam light pattern through the high-beam light emitting unit 372. The high-beam light emitting unit 372 is also an integrated structure like the low-beam light emitting unit 371. Among them, the correspondence between the high-beam light source and the high-beam reflector 372 can be one-to-one or many-to-one, and the present application does not limit the correspondence between the high-beam light source and the high-beam reflector 372. However, the number of high-beam light emitting units 372 is a single one, and multiple high-beam light sources are used to splice one high-beam light emitting unit 372 to obtain the final high-beam light pattern.

[0027] The radiator 31 is divided into two parts, the first radiator is fixed to the drive unit 2, and the second radiator is fixed to the low beam PCB board and the high beam PCB board and provides heat dissipation for them. The second radiator is an integrally formed extrusion part, and the cross section is extended horizontally and then processed again, so the heat dissipation efficiency is better. Compared with the existing die-casting radiator, the production efficiency is higher. The fins of the second radiator have dense wave patterns and strong heat dissipation capacity of the fins. The second radiator dissipates heat for the low beam and the high beam at the same time, which can improve the space utilization rate and reduce the space occupation. The second radiator is provided with a heat dissipation platform, and a plurality of heat dissipation fins extend in a normal direction of the heat dissipation platform. The radiator is provided with a mounting plate, and the mounting plate is arranged on the side of the heat dissipation platform away from the heat dissipation fins. The low beam PCB and the low beam reflective bowl, as well as the high beam PCB and the high beam reflective bowl are respectively located on both sides of the mounting plate and fit with the mounting plate. The high beam light source is arranged on the high beam PCB. The low beam light source and the high beam light source are separated by the mounting plate to avoid the light generated by the high beam light source and the low beam light source from being mixed, which affects the light type effect.

[0028] The first reflector 33 is formed by a plurality of low beam reflective bowls, and the second reflector 35 is formed by a plurality of high beam reflective bowls. In other embodiments, each low beam reflective bowl and a plurality of high beam reflective bowls are independently and directly or indirectly fixed to a heat sink or a PCB board through skirts, and this application is not limited to this.

[0029] The shading bracket 36 and the lens bracket 38 are both hollow structures, and the diameter of the shading bracket 26 is smaller than the diameter of the lens bracket 38. The shading bracket 36 includes an inward first flange 361 and a first skirt 362. The lens bracket 38 includes an inward second flange 381 and a second skirt 382. The lens 37 includes a main body 371 and a third flange 372. The first flange 361 and the second flange 381 are fixed to the heat sink 31 with screws, and the first skirt 362 is used to support the third flange 372 of the lens 37, and cooperates with the second skirt 382 to press and fix the lens 37. A plurality of baffles are provided in the shading bracket 36, which are divided into a plurality of zones, and cooperate with a reflective bowl in the first reflector 33 and the light output unit of the lens 37 to form a lens module, which can generate a complete low beam light type or high beam light type alone. The second reflector 35 is also provided with an upwardly protruding light-shaped baffle, which passes through the heat sink to form the light-shaped baffle of the first reflector 33 and is used to form a cut-off line of the low-beam light pattern.

[0030] In this embodiment, a gyroscope and a control unit (not shown in the figure) are also included. The gyroscope is arranged on the control unit, and is used to detect the tilt angle of the motorcycle headlight and feed the tilt angle back to the control unit. The control unit is used to receive the tilt angle fed back by the gyroscope and control the drive unit to rotate the same angle in the opposite direction of the rotation angle. The drive unit is a motor, which can make the self-balancing headlight always remain parallel to the ground when the two-wheeled vehicle turns, so as to emit a low beam light type with a cut-off line parallel to the ground.

[0031] like Figure 6 As shown, the low-beam dimming unit includes a first reflector 33 and a low-beam light emitting unit 371 that are arranged corresponding to the low-beam light source 321. The multiple low-beam reflection bowls of the first reflector 33 correspond to the low-beam light sources 321 one by one.

[0032] The inner side of the reflective bowl is made of a material with low light absorption rate or is additionally provided with a corresponding coating, and the point light generated by the low beam light source 100 is collected and modulated to generate approximately parallel light rays, which are emitted to the low beam light output unit 371 of the lens.

[0033] like Figure 1As shown, the low beam light emitting unit 371 includes a first low beam light emitting unit 3711 and a second low beam light emitting unit 3712, and each low beam light source 321 independently generates a light type unit through the corresponding low beam light emitting unit 371. The shape of the light type unit is similar to the shape of the final low beam light type. The low beam light source 321, the multiple low beam reflection bowls of the first reflector 33 and the low beam light emitting unit 371 correspond one by one. In order to obtain the light type unit generated by each low beam light source 321 mentioned above, each first low beam light emitting unit 3711 and the second low beam light emitting unit 3712 are provided with a corresponding lens curvature on the light incident surface 373 according to the position on the low beam light emitting unit 371. In order to realize the light type unit, the lens curvature of the low beam side of the low beam light emitting unit 371 closer to the outside is smaller; each low beam light emitting unit 371 is an integrated structure, and the cross section of the light emitting surface 374 is a convex curve. Adapting to the curved shape, the outer low beam light emitting unit 371 has a larger inclination angle relative to the middle low beam light emitting unit 371. Specifically, the outer low beam light emitting unit 371 is closer to the corresponding low beam light source 321. In some embodiments, the number of low beam light sources 321 is three, and the left and right low beam light sources 321 are symmetrically arranged about the middle low beam light source 321. The corresponding low beam reflector and low beam light emitting unit 371 are also three, the low beam light emitting units 371 on the left and right sides are the first low beam light emitting unit 3711, and the middle low beam light emitting unit 371 is the second low beam light emitting unit 3712, and the curvature of the second low beam light emitting unit 3712 on the low beam side is greater than that of the first low beam light emitting unit 3711.

[0034] Among them, the light type unit refers to the light type unit generated by any low-beam light source 321 and the corresponding low-beam dimming unit, which is close in shape to the final low-beam light type generated by the superposition of multiple low-beam light sources 321: the light type unit generated by a single low-beam light source is lower in brightness than the final low-beam light type. The difference between the shape of the light type unit and the final low-beam light type mainly comes from the edge position, where the illuminance is low. When the low-beam light types generated by multiple low-beam light sources 321 are superimposed, the absolute value of the illuminance change is small, and the light and dark stratification is not easy to observe and can be ignored.

[0035] In practical applications, the middle low-beam light source 321 is positioned further back than the low-beam light sources 321 on both sides, that is, closer to the reflective bowl, so that the light generated by the low-beam light source 100 can be more evenly distributed on the entire light pattern unit.

[0036] The lens 37 is provided with a light incident surface 373 and a light emitting surface 374 . The cross-sectional and longitudinal cross-sectional shapes of the light emitting surface 374 are both curved, and can collimate light in at least two directions, the two directions being perpendicular to each other.

[0037] refer to Figures 7 to 10, from left to right, they are respectively the low-beam light patterns generated by the three low-beam light sources 321 on the left, middle and right sides, and the final low-beam light pattern generated by the superposition of the three low-beam light sources 321 . Figure 7 The low beam light pattern generated by the low beam light source 321 on the left side; Figure 8 A low beam light pattern generated by the middle low beam light source 321; Fig. 9 The low beam light pattern generated by the low beam light source 321 on the right side; Fig.10 It is a low beam light pattern generated by the low beam light source 321 generated by superposition. Figure 7 , Figure 8 , Fig. 9 and Fig.10 The width of the transmission image of the generated light pattern on the light distribution screen is -35 degrees to 35 degrees.

[0038] The reflecting surface of the reflecting bowl is any one of a parabola, a quasi-parabola, an ellipsoid and a quasi-ellipsoid, and the reflecting surface can direct the light emitted by the light source to the lens 37 in substantially parallel fashion.

[0039] The multiple low-beam light sources 321 independently generate low-beam light patterns according to the corresponding low-beam dimming units. This structure can realize the unitization of the low-beam light path design and reduce the coupling degree of the light path design caused by the splicing of multiple light sources. The low-beam light pattern generated by the superposition of multiple light sources is relatively uniform, without the defects of obvious stratification of bright and dark areas and general visual effects caused by splicing.

[0040] For subsequent research and development work, such as further improving the low beam brightness, it is only necessary to add low beam light sources on both sides, and expand the corresponding low beam output units on both sides based on the existing lens 37 to achieve further improvement in brightness. It is only necessary to design the shape of the newly expanded low beam output unit without redesigning the entire lens 37, which improves design efficiency and reduces design costs.

[0041] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned implementation modes, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned implementation modes, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation modes of the present invention.

Claims

1. A self-balancing headlamp, comprising a support base (1), a drive unit (2) and a lighting unit (3), wherein the lighting unit (3) is used to generate lighting light distribution, one end of the drive unit (2) is fastened to the support base (1), and the lighting unit (3) is remote from the support base (1) and comprises in sequence a heat sink (31), a first PCB board (32), a low-beam light source (321), a first reflector (33), a second PCB board (34), a high-beam light source (341), a second reflector (35), a light shielding bracket (36), a lens (37) and a lens bracket (38), characterized in that: The lens (37) has a low-beam light emitting unit (371) and a high-beam light emitting unit (372); The low-beam light emitting unit (371) comprises a first low-beam light emitting unit (3711) and a second low-beam light emitting unit (3712), and the lens curvature of the first low-beam light emitting unit (3711) is smaller than the lens curvature of the second low-beam light emitting unit (3712).

2. The self-balancing headlamp according to claim 1, characterized in that: The lens (37) has a light incident surface (373) and a light emitting surface (374); the cross section and the longitudinal section of the light emitting surface (374) are both curved surfaces, and are capable of collimating light in at least two directions, wherein the two directions are perpendicular to each other.

3. The self-balancing headlamp according to claim 1, characterized in that: The first reflector (33) has a plurality of reflective bowls, and the number of the reflective bowls is equal to the sum of the number of the first low-beam light emitting units (3711) and the number of the second low-beam light emitting units (3712).

4. The self-balancing headlamp according to claim 3, characterized in that: The reflective surface of each reflective bowl of the first reflector (33) corresponds to the first low-beam light emitting unit (3711) or the second low-beam light emitting unit (3712).

5. The self-balancing headlamp according to claim 3, characterized in that: The reflective surface of the reflective bowl is any one of a parabola, a quasi-parabola, an ellipsoid and a quasi-ellipsoid, and the reflective surface can direct the light emitted by the light source to the lens (37) in parallel.

6. The self-balancing headlamp according to claim 1, characterized in that: The heat sink (31) is an aluminum profile, formed by extending the shape of a cross section, and has a plurality of evenly distributed heat dissipation fins.

7. The self-balancing headlamp according to claim 1, characterized in that: The driving unit (2) is a motor. Specifically, the motor includes a DC motor, an AC motor, a stepping motor, a servo motor, or a brushless motor.

8. The self-balancing headlamp according to claim 1, characterized in that: The self-balancing headlight also includes a gyroscope and a control unit. The gyroscope is arranged on the control unit and is used to detect the tilt angle of the self-balancing headlight and feed back the tilt angle to the control unit. The control unit is used to receive the tilt angle fed back by the gyroscope and control the drive unit to rotate the same angle in the opposite direction of the rotation angle.

9. The self-balancing headlamp according to claim 1, characterized in that: The self-balancing headlamp further comprises a bottom shell and a lampshade; the lampshade is tightly connected to the bottom shell and defines a receiving cavity together with the bottom shell, wherein the receiving cavity is used to receive the support base (1), the drive unit (2), the lighting unit (3) and the control unit.

10. A vehicle, characterized in that: The invention comprises a vehicle body and a self-balancing headlamp as claimed in any one of claims 1 to 9, wherein the self-balancing headlamp is fastened to the vehicle body.

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