High-beam and low-beam integrated lamp and vehicle

Abstract

The invention provides a high-beam and low-beam integrated lamp and a vehicle, and relates to the technical field of vehicle lamps. The high-beam and low-beam integrated lamp comprises a light emitting module and a light shading module, the light emitting module comprises a lamp bead, a light cup and a lens, and the light shading module comprises a driving device and a light barrier. The driving device is used for driving the light barrier to move in the preset direction so that the light barrier can move. The distance between the top of the light barrier and the central surface of the lens is a, and the radius of the light inlet surface of the lens is r; when the light barrier is located at the first position, the light-emitting module is in a low beam mode, and a is larger than or equal to-0.5 r and smaller than or equal to 0.5 r; and when the light barrier is located at the second position, the light emitting module is in a high beam mode: 0.5 r < a < = r. The high-beam and low-beam integrated lamp adopts a set of light-emitting module, and light types are switched through the action of a shading module; the size of a headlamp assembly is reduced; the overall material cost can still be effectively reduced without arranging two sets of optical modules; the optical path and the mechanical structure are simpler, and the assembly difficulty and the maintenance difficulty are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle lamps, in particular to a high-beam and low-beam integrated lamp and a vehicle. BACKGROUND

[0002] The headlamp of a vehicle is a core component for ensuring driving safety at night or in low-light conditions, and is directly related to the safety of driving. According to the light distribution performance and the use scene, the headlamp is mainly divided into two basic types of low-beam and high-beam. The low-beam is used to provide illumination for the front of the vehicle at a short distance; the high-beam is used to provide illumination for the front at a long distance and high brightness in the absence of oncoming vehicles or preceding vehicles.

[0003] On the existing vehicle, to realize the two different lighting functions of low-beam and high-beam, the most common solution is to use two independent and complete optical modules. Specifically, two independent optical modules are usually arranged side by side or one above the other in a headlamp assembly: one is responsible for low-beam illumination, and the other is responsible for high-beam illumination. Each optical module includes its own independent light source (such as a halogen bulb, a xenon bulb, or an LED chip), a lens, etc. When the driver switches the light through the control key inside the vehicle, the vehicle circuit system will control the lighting and extinguishing of the two modules respectively. For example, when the low-beam is turned on, only the low-beam module works; when the high-beam is switched, the high-beam module is lit alone, or both the low-beam and high-beam modules are lit at the same time. However, the existing headlamp has the following disadvantages: space occupation and layout limitation: two complete optical modules need to occupy a larger physical space inside the lamp housing; high cost and complexity: two independent systems mean that there are double the light sources, drivers, heat sinks, and optical components (such as lenses), which directly leads to a significant increase in material costs, and the maintenance cost is also higher. SUMMARY

[0004] The purpose of the present application is to overcome the defects of the prior art and provide a high-beam and low-beam integrated lamp and a vehicle to solve the problems in the prior art.

[0005] To solve the above problems, the first aspect of the embodiments of the present application provides a high-beam and low-beam integrated lamp applied to a vehicle, comprising a light-emitting module and a light-shielding module corresponding to the light-emitting module, the light-emitting module comprising a lamp bead, a light cup and a lens, the light-shielding module comprising a driving device and a light shield; wherein the heights of the lamp bead, the lens and the light shield are consistent, and all are parallel to a preset direction. The lamp bead is arranged in the light cup, a reflecting surface of the light cup is used for reflecting light generated by the lamp bead, and the lens is used for transmitting the light reflected by the light cup; wherein, in the preset direction, the light inlet surface of the lens comprises a first surface and a second surface, wherein the first surface and the second surface are sequentially arranged along the preset direction and symmetrically arranged on both sides of a center surface of the lens; both sides of the center surface are a first side and a second side respectively, the first surface is located on the first side, and the second surface is located on the second side; the mounting position of the light shielding module is located on the second side; The driving device is used for driving the light shielding plate to move along the preset direction, so that the light shielding plate moves to a first position or a second position; The distance between the top of the light shielding plate and the center surface of the lens is a, and the radius of the light inlet surface of the lens is r; wherein, when the top of the light shielding plate is flush with the center surface, a = 0; when the top of the light shielding plate is located on the first side, a < 0; and when the top of the light shielding plate is located on the second side, a > 0; When the light shielding plate is in the first position, the light emitting module is in low beam mode: -0.5r≤a≤0.5r; When the light shielding plate is in the second position, the light emitting module is in high beam mode: 0.5r<a≤r.

[0006] In a possible implementation, the lamp bead is arranged at the focal point of the reflecting surface of the light cup; the light inlet surface of the lens faces the reflecting surface of the light cup, wherein the lamp bead is located in the area faced by the second surface; The distance between the lamp bead and the light inlet surface is b, and the distance between the lamp bead and the center surface of the lens is c; wherein, 0.5r≤b≤2r, 0.25r≤c≤0.5r.

[0007] In a possible implementation, a heat dissipation shell, a panel and a lamp plate are included, wherein the lens is arranged on the panel, and the lamp bead is arranged on the lamp plate; The heat dissipation shell comprises a mounting cavity, the light cup, the lamp bead and the lamp plate are all mounted in the mounting cavity; the mounting cavity comprises a placement surface, the lamp plate is attached and fixed on the placement surface; the light cup is fixedly connected with the lamp plate; The light cup comprises a first open part and a second open part, the first open part and the second open part are adjacently arranged and in communication with each other; the first open part is oppositely arranged with the lens, and the light reflected by the reflecting surface of the light cup is emitted to the lens through the first open part; the second open part is provided with the lamp plate; The heat dissipation shell is provided with an opening part, and the lens part extends out of the opening part; the panel comprises connecting arms; the connecting arms are two and are separately arranged on two sides of the lens; the inner side wall of the opening part is provided with connecting grooves corresponding to the connecting arms, wherein the connecting arms are inserted into the corresponding connecting grooves; The connecting grooves are provided with first and second sealing members, which are separately arranged on two sides in the thickness direction of the connecting arms and are in sealing contact with the connecting arms; wherein the connecting grooves are further provided with first and second installation grooves, the first installation groove is used for installing and positioning the first sealing member, and the second installation groove is used for installing and positioning the second sealing member; the first sealing member is in sealing contact with the inner wall of the first installation groove, and the second sealing member is in sealing contact with the inner wall of the second installation groove; The installation cavity is provided with an inner recess on one side close to the opening part, and the driving device is arranged in the inner recess.

[0008] In a possible implementation, the outer part of the heat dissipation shell is provided with heat dissipation fins.

[0009] In a possible implementation, the light-emitting module has a plurality of light-emitting modules, and the light-emitting modules are arranged in sequence along a preset path.

[0010] In a possible implementation, the preset path comprises a line segment, a circle or a rectangle.

[0011] In a possible implementation, the driving device comprises a base, an electromagnet and a moving magnet. The inner cavity is arranged through the base; The electromagnet is fixedly arranged at the bottom of the inner cavity and is in sealing connection with the inner cavity; The moving magnet is slidably arranged at the top of the inner cavity; Part of the moving magnet is located outside the inner cavity; wherein the top of the moving magnet is provided with the light barrier, and the light barrier is located outside the inner cavity; The top of the base is provided with an elastic member; wherein the elastic member is located outside the inner cavity and is sleeved on the moving magnet; The bottom of the moving magnet is provided with a containing cavity; wherein when the light-emitting module is in a high beam mode, the electromagnet is inserted into the containing cavity.

[0012] In a possible implementation, the moving magnet is in sliding sealing connection with the inner cavity; The base is provided with a ventilation pipe in communication with the inner cavity, and the ventilation pipe is connected with a gas pump; wherein the gas pump is used to inflate or deflate the inner cavity through the ventilation pipe to change the air pressure inside the inner cavity. When the light shield plate moves from the first position to the second position, the gas pump is used to deflate the inner cavity through the ventilation pipe to make the inner cavity in a negative pressure state. When the light shield plate moves from the second position to the first position, the gas pump is used to inflate the inner cavity through the ventilation pipe to gradually increase the air pressure inside the inner cavity to a preset pressure value.

[0013] In a possible implementation, the second face is covered with an electrochromic film. The vehicle is provided with a detection module for detecting the conditions in front of the vehicle. When the light emitting module is in high beam mode and the detection module detects that there is a target object in front of the vehicle: Based on the distance between the vehicle and the target object, the light shield plate is kept in the second position, and the light transmittance of the electrochromic film is reduced; wherein when the distance between the vehicle and the target object is less than a preset distance, the light transmittance of the electrochromic film is reduced to the lowest; during the control of the electrochromic film to reduce the light transmittance, if the electrochromic film is detected to have a fault, the light shield plate is controlled to move from the second position to the first position. The detection module includes a solid-state laser radar or / and a millimeter wave radar, and the target object includes a vehicle or a pedestrian.

[0014] The second aspect of the embodiments of the present application provides a vehicle including a vehicle body, and the vehicle body is provided with the high-low beam integrated lamp as described above.

[0015] The beneficial effects of the present application at least include: The high-low beam integrated lamp provided by the present application includes a light emitting module and a light shielding module corresponding to the light emitting module. When the light emitting module works, the light emitted by the lamp beads is reflected by the reflecting surface of the light cup and is emitted to the lens, and then is emitted out through the lens; the driving device of the light shielding module drives the light shield plate to move to the first position or the second position, so that the light emitting module is switched to the low beam mode or the high beam mode.

[0016] The high-beam and low-beam integrated lamp only adopts one set of light-emitting module, and switches the light type through the action of the corresponding light-shielding module, replacing the traditional two sets of independent optical modules, which makes the volume of the headlamp assembly smaller, thereby providing greater freedom for the design of the front of the vehicle (such as low-drag styling, sensor arrangement, compact architecture of new energy vehicles). In addition, since there is no need to set two sets of optical modules, the overall material cost can be effectively reduced. Correspondingly, the optical path and mechanical structure also become simpler, among which the number of parts is reduced, the assembly and maintenance difficulty is reduced, and the overall reliability of the system is improved.

[0017] The distance between the top of the light-shielding plate and the center surface of the lens is a, and the radius of the light-incident surface of the lens is r, wherein the light-incident surface of the lens is divided into symmetrical first and second surface portions.

[0018] When the light-shielding plate is in the first position, the light-emitting module is in the low-beam mode: -0.5r≤a≤0.5r, thereby ensuring that the light-shielding plate is as close as possible to the center surface of the lens, ensuring that the low-beam produces a clear bright-dark cutoff line, and controlling the illumination range of the light. The inventor creatively sets the a range to -0.5r≤a≤0.5r by optimizing the a value range, which can allow a part of the light-shielding plate installation position to have a floating space (such as ±0.05mm machining error and ±0.1mm lens installation error), while reducing the manufacturing cost, it can also ensure that the low-beam performance meets the actual needs, and the top of the light-shielding plate is close to the center surface, which can obtain better lighting effect in low-beam mode. Therefore, the organic coordination between product performance and process difficulty is realized. Through testing, when the value of a exceeds the range of the application, for example, if a<-0.5r, it will cause the illumination range to be insufficient in low-beam mode, affecting the lighting effect and driving safety; if a>0.5r, it will cause the light to be not properly shielded, which may directly illuminate the drivers or pedestrians of the oncoming vehicles, causing glare and affecting traffic safety.

[0019] When the light shield is in the second position, the light-emitting module is in a high beam mode: 0.5r BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A schematic diagram of a high-low beam integrated lamp is shown; Figure 2 An exploded view of the high-low beam integrated lamp is shown; Figure 1 Figure 3 A sectional view of the high-low beam integrated lamp is shown; Figure 1 Figure 4 A sectional view of the light-emitting module and the light-shielding module in a low beam mode is shown; Figure 5 A sectional view of the light-emitting module and the light-shielding module in a high beam mode is shown; Figure 6 A side view of a lens is shown; Figure 7 A light spot diagram in a low beam mode is shown; Figure 8 A light spot diagram in a high beam mode is shown; Figure 9 A sectional view of a light-shielding module is shown; Figure 10 A sectional view of a light cup is shown; Figure 11 A sectional view of a heat dissipation shell is shown; Figure 12 A schematic diagram of a high-low beam integrated lamp with the light-emitting module distributed along a circular path is shown; Figure 13 A schematic diagram of a high-low beam integrated lamp with the light-emitting module distributed along a rectangular path is shown; Figure 14 A schematic diagram of the positional relationship between a lens and a light shield is shown; ​​Figure 15 A schematic diagram of the positional relationship between the lens and the lamp bead is shown.

[0021] Main element symbol explanation: 100 - light-emitting module, 110 - lamp bead, 120 - light cup, 121 - first open part, 122 - second open part, 130 - lens, 131 - first face, 132 - second face, 133 - center face, 1331 - first side, 1332 - second side, 200 - light-blocking module, 210 - driving device, 211 - base, 2111 - inner cavity, 212 - electromagnet, 213 - moving magnet, 214 - elastic member, 215 - limiting member, 216 - air pipe, 217 - air pump, 220 - light-blocking plate, 300 - heat dissipation shell, 310 - mounting cavity, 311 - placement face, 320 - opening part, 321 - connecting groove, 322 - first sealing member, 323 - second sealing member, 324 - first placement groove, 325 - second placement groove, 330 - inner recess, 400 - panel, 410 - connecting arm, 500 - lamp panel, 600 - end cover, 710 - first light spot, 720 - second light spot. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Reference Figures 1-3 In the present embodiment, a high-low beam integrated lamp is proposed, which is applied to a vehicle and includes a light-emitting module 100 and a light-blocking module 200 corresponding to the light-emitting module 100.

[0024] As Figure 4 and Figure 5 The light-emitting module 100 includes a lamp bead 110, a light cup 120, and a lens 130 (specifically, a convex lens 130), and the light-blocking module 200 includes a driving device 210 and a light-blocking plate 220. Among them, the heights of the lamp bead 110, the lens 130, and the light-blocking plate 220 are consistent, and all are parallel to a preset direction. Figure 3 In the present embodiment, the preset direction is parallel to the direction indicated by the arrow x, and is parallel to the vertical direction. Figure 4 and Figure 5 In the present embodiment, the preset direction is parallel to the vertical direction. Figure 4 and Figure 5 The arrows in the present embodiment represent the path of light.

[0025] The LED 110 is disposed in the reflector 120. The reflective surface of the reflector 120 is used to reflect the light generated by the LED 110, and the lens 130 is used to transmit the light reflected by the reflector 120.

[0026] like Figure 6 As shown, along a preset direction, the light-receiving surface of the lens 130 includes a first surface 131 and a second surface 132. The first surface 131 and the second surface 132 are sequentially arranged along the preset direction and symmetrically positioned on both sides of the central surface 133 of the lens 130. The two sides of the central surface 133 are respectively the first side 1331 and the second side 1332, with the first surface 131 located on the first side 1331 and the second surface 132 located on the second side 1332. The light-shielding module is installed on the second side 1332. Figure 6 The dashed line in the figure represents the center plane 133 of lens 130.

[0027] Figure 7 and Figure 8 The fan-shaped area in the middle is the first light spot 710, which is the light spot formed by light passing through the first face 131; Figure 8 The rectangular area in the upper middle is the second light spot 720, which is the light spot formed by light passing through the second face 132.

[0028] The driving device 210 is used to drive the light-blocking plate 220 to move along a preset direction, so that the light-blocking plate 220 moves to a first position or a second position.

[0029] like Figure 14 As shown, in this embodiment, the distance between the top of the light-blocking plate 220 and the center surface 133 of the lens 130 is 'a', and the radius of the light-entry surface of the lens 130 is 'r'. The top of the light-blocking plate 220 is located at... Figure 4 and Figure 5 The top of the light-blocking plate 220 shown.

[0030] When the top of the light-blocking plate 220 is flush with the center surface 133, a = 0; when the top of the light-blocking plate 220 is located on the first side 1331, a < 0; when the top of the light-blocking plate 220 is located on the second side 1332, a > 0. (Refer to...) Figure 14 When the light-blocking plate 220 is located on the second side 1332, the top of the light-blocking plate 220 is also located on the second side 1332. At this time, a > 0. If the light-blocking plate 220 moves vertically upward and passes the center plane 133, then the top of the light-blocking plate 220 is located on the first side 1331. At this time, a < 0.

[0031] When the light-blocking plate 220 is in the first position, the light-emitting module 100 is in low beam mode: -0.5r≤a≤0.5r; When the light shield 220 is in the second position, the light emitting module 100 is in the high beam mode: 0.5r < a ≤ r.

[0032] For example, r = 20mm; low beam mode: -10mm ≤ a ≤ 10mm; high beam mode: 10mm < a ≤ 20mm. Wherein, a = 0 represents that the top of the light shield 220 is flush with the center surface 133.

[0033] Referring to Figure 7 , the first light spot 710 is the light spot formed when a = 0; when a < 0, the first light spot 710 will shrink; referring to Figure 8 , when a > 0, the upper part of the first light spot 710 will form a second light spot 720. Wherein, Figure 8 , the second light spot 720 in the high beam mode is the light spot formed when the light passes through the second surface 132.

[0034] The high-low beam integrated lamp only uses one set of light emitting module 100, and switches the light type by the action of the corresponding light shielding module 200, replacing the traditional two sets of independent optical modules, which makes the volume of the headlamp assembly smaller, thereby providing more freedom for the design of the front of the vehicle (such as low-drag styling, sensor arrangement, compact architecture of new energy vehicles). In addition, since there is no need to set two sets of optical modules, the overall material cost can be effectively reduced. Correspondingly, the optical path and mechanical structure become simpler, wherein the number of parts is reduced, the assembly and maintenance difficulties are reduced, and the overall system reliability is improved. It should be noted that one set of light emitting module 100 does not mean only one light emitting module 100, wherein one set of light emitting module 100 can include multiple light emitting modules 100.

[0035] The distance between the top of the light shield 220 and the center surface 133 of the lens 130 is a, and the radius of the light entrance surface of the lens 130 is r, wherein the light entrance surface of the lens 130 is divided into symmetrical first surface 131 and second surface 132. Taking the radius of the light entrance surface of the lens 130 as the reference, the distance range between the top of the light shield 220 and the center surface 133 of the lens 130 is determined, which leaves a reasonable buffer space for the manufacturing tolerance (such as machining error of parts, assembly deviation between parts, and movable range of the light shield 220), reduces the difficulty and cost of production, assembly and control.

[0036] When the light shield is in the first position, the light-emitting module is in low-beam mode: -0.5r≤a≤0.5r, thereby ensuring that the light shield is as close as possible to the center plane of the lens, ensuring that the low beam produces a clear bright-dark cutoff line, and controlling the illumination range of the light. The inventor creatively sets the a range to -0.5r≤a≤0.5r by optimizing the a value range, which can allow a portion of the light shield installation position to have a floating space (such as a ±0.05mm machining error, a ±0.1mm lens installation error), while reducing manufacturing costs, and also ensuring that the low-beam performance meets the actual needs, the top of the light shield is close to the center plane, and better lighting effect in low-beam mode can be obtained. Therefore, the organic cooperation between product performance and process difficulty is realized. Through testing, when the value of a exceeds the range of the application, for example, if a<-0.5r, then the illumination range in low-beam mode will be insufficient, affecting the lighting effect and driving safety; if a>0.5r, then the light will not be properly shielded, which may directly illuminate the drivers of oncoming vehicles or pedestrians, causing glare and affecting traffic safety.

[0037] When the light shield is in the second position, the light-emitting module is in high-beam mode: 0.5r

[0038] The reflective surface of the light cup 120 is designed based on a parabolic surface, wherein the lamp bead 110 is arranged at the focal point of the reflective surface of the light cup 120. The light entrance surface of the lens 130 faces the reflective surface of the light cup 120, wherein the lamp bead 110 is located in the area facing the second face 132.

[0039] Referring to Figure 15 The distance between the lamp bead 110 and the light entrance surface is b, and the distance between the lamp bead 110 and the center plane 133 of the lens 130 is c.

[0040] Wherein, 0.5r≤b≤2r, 0.25r≤c≤0.5r. For example, r=20mm, b=10~40mm, c=5~10mm.

[0041] The lamp bead 110 is arranged at the focal point of the light cup 120, so as to ensure that the light emitted by the lamp bead 110 can be reflected by the light cup 120 to obtain parallel reflected light; then, the parallel reflected light is transmitted through the lens, so as to realize focusing in a region, thereby improving the brightness of the light spot and the lighting effect.

[0042] If b is controlled within the above range, the focusing effect can be further improved. If b<0.5r, the reflected light will form virtual light after being transmitted through the lens, which will cause the light spot to be blurred, and will affect the formation of the light spot and the lighting effect. If b>2r, the focusing region will be too far from the vehicle body, so that the region close to the vehicle body cannot obtain clear lighting. In addition, if b<0.5r, the size of the part and the installation space will be compressed, which will increase the manufacturing and assembly difficulty. If b>2r, a larger space will be occupied, which is not conducive to the miniaturization of the product.

[0043] If c is controlled within the above range, the size of the light spot can be controlled to be reasonable. If c<0.25r, a smaller light cup needs to be matched, which will cause the light reflected by the light spot to be less, so that the size of the formed light spot will be small, thereby affecting the lighting range. If c>0.5r, a larger light cup needs to be matched, which will increase the installation space (not conducive to the miniaturization of the product) on the one hand, and will cause the size of the light spot to be large, thereby affecting the oncoming vehicles and pedestrians (causing the occurrence of glare).

[0044] Based on the radius of the lens 130, b and c are controlled within a reasonable range, so that the overall module size is controlled while the optical performance and heat dissipation of the lamp bead 110 are ensured, so as to adapt to the space limitation in the vehicle lamp. In addition, a reasonable buffer space is left for the manufacturing tolerance (such as the machining error of the part and the assembly deviation between the parts), so as to reduce the difficulty and cost of production and assembly.

[0045] As shown in Figure 9 the driving device 210 includes a base 211, an electromagnet 212 and a moving magnet 213; The inner cavity 2111 is arranged in the base 211; The electromagnet 212 is fixedly arranged at the bottom of the inner cavity 2111 and is sealingly connected with the inner cavity 2111; The moving magnet 213 is slidably arranged at the top of the inner cavity 2111; The moving magnet 213 is partially located outside the inner cavity 2111; wherein, the top of the moving magnet 213 is provided with a light shield plate 220, and the light shield plate 220 is located outside the inner cavity 2111; The base 211 is provided at the top with an elastic member 214; wherein the elastic member 214 is located outside the inner cavity 2111 and is sleeved on the moving magnet 213; the elastic member 214 comprises a spring.

[0046] The bottom of the moving magnet 213 is provided with an accommodating cavity; wherein when the light-emitting module 100 is in the high beam mode, the electromagnet 212 is inserted into the accommodating cavity.

[0047] When the driving device 210 is not powered, the electromagnet 212 has no magnetism, and the light shield plate 220 is in the first position; after the driving device 210 is powered, the electromagnet 212 has magnetism, and the electromagnet 212 and the moving magnet 213 attract each other, at this time, the moving magnet 213 moves towards the electromagnet 212, and the corresponding light shield plate 220 moves synchronously with the moving magnet 213, so that the light shield plate 220 moves to the second position, and in the process, the elastic member 214 is gradually compressed. When the driving device 210 is powered off, the moving magnet 213 automatically returns to the initial position under the action of the elastic member 214, and correspondingly, the light shield plate 220 also moves to the first position.

[0048] The base 211 is detachably provided with a limiting member 215, and when the driving device 210 is in the powered-off state, the top of the electromagnet 212 can abut against the limiting member 215, thereby realizing positioning of the light shield plate 220 to ensure that the light shield plate 220 is in the first position.

[0049] The bottom of the moving magnet 213 is provided with a tapered cavity, and the electromagnet 212 comprises a tapered portion, which is located in the inner cavity 2111. When the light-emitting module 100 is in the high beam mode, the tapered portion is inserted into the tapered cavity.

[0050] Further, the moving magnet 213 is connected in sliding sealing with the inner cavity 2111; The base 211 is provided with an air pipe 216, which communicates with the inner cavity 2111, and the air pipe 216 is connected with a gas pump 217; wherein the gas pump 217 is used for inflating or exhausting the inner cavity 2111 through the air pipe 216 to change the air pressure inside the inner cavity 2111: When the light shield plate 220 moves from the first position to the second position, the gas pump 217 is used for exhausting the inner cavity 2111 through the air pipe 216 to make the inner cavity 2111 in a negative pressure state; When the light shield plate 220 moves from the second position to the first position, the gas pump 217 is used for inflating the inner cavity 2111 through the air pipe 216 to gradually increase the air pressure inside the inner cavity 2111 to a preset pressure value.

[0051] The vehicle will produce different degrees of vibration due to road conditions and other reasons during driving. The base 211, electromagnet 212 and vehicle body are in a relatively fixed state, and the moving magnet 213 is movable relative to the base 211. When the vibration amplitude during vehicle driving is too large, the moving magnet 213 will inevitably float (i.e. slide relative to the base 211), which will cause the position of the light shield plate 220 to change, thereby affecting the light output effect. Therefore, the air pump 217 is added in the embodiment to adjust the air pressure inside the inner cavity 2111: When the light shield plate 220 moves from the first position to the second position, the air pump 217 performs air extraction on the inner cavity 2111 through the air pipe 216, so that the inner cavity 2111 is in a negative pressure state. At this time, under the joint action of the magnetic field force and the external air pressure, the stability of the moving magnet 213 is improved, so that the moving magnet 213 and the base 211 can maintain a relatively fixed state, ensuring that the light shield plate 220 only moves within a reasonable range, avoiding affecting the light output effect; When the light shield plate 220 moves from the second position to the first position, the air pump 217 performs air charging on the inner cavity 2111 through the air pipe 216, so that the air pressure inside the inner cavity 2111 gradually increases to a preset pressure value. At this time, under the joint action of the elastic force and the internal air pressure, the stability of the moving magnet 213 is improved, so that the moving magnet 213 and the base 211 can maintain a relatively fixed state, ensuring that the light shield plate 220 only moves within a reasonable range, avoiding affecting the light output effect.

[0052] In the embodiment, the second face 132 is covered with an electrochromic film. By passing a corresponding current through the electrochromic film, the light transmittance of the electrochromic film can be adjusted. When the electrochromic film is powered, the light transmittance of the electrochromic film can be 100%.

[0053] A detection module is arranged on the vehicle, and the detection module is used to detect the condition in front of the vehicle.

[0054] When the light emitting module 100 is in the high beam mode and the detection module detects that there is a target object in front of the vehicle: Based on the distance between the vehicle and the target object, the light shield plate 220 is kept at the second position, and the light transmittance of the electrochromic film is reduced; wherein when the distance between the vehicle and the target object is less than a preset distance, the light transmittance of the electrochromic film is reduced to the lowest; during the process of controlling the electrochromic film to reduce the light transmittance, if the electrochromic film fails, the light shield plate 220 is controlled to move from the second position to the first position. Wherein whether the electrochromic film is faulty can be judged by detecting the current signal of the circuit where the electrochromic film is located.

[0055] The light shielding module 200 is a mechanical and electrical integrated device with high reliability, but frequent operation can cause mechanical wear, thereby affecting the actual service life. In addition, it takes a certain time for the light shielding plate 220 of the light shielding module 200 to move from the second position to the first position.

[0056] In the present embodiment, when the light emitting module 100 is in high beam mode and a target object is detected in front of the vehicle, the light transmittance of the electrochromic film of the second face 132 is reduced to weaken or block the light transmitted from the second face 132, thereby avoiding the adverse effects of high beam on the target object. The electrochromic film can switch the transparency in a very short time, and the response is more rapid, thereby making up for the long time of the light shielding module 200 in switching mode (relative to the electrochromic film), and also eliminating the frequent operation of the light shielding module 200 in a short time, effectively improving the service life of the light shielding module 200.

[0057] In addition, the reliability of the high-low beam integrated lamp is improved by the light shielding module 200 and the electrochromic film, for example, when one of them fails, the other can still realize the switching of the low beam mode and the high beam mode, ensuring that the lamp can work normally.

[0058] The detection module includes a solid-state laser radar or / and a millimeter wave radar, and the target object includes a vehicle or a pedestrian. The working principle of the detection module can refer to the prior art, which will not be described herein.

[0059] As shown in Figure 3 The high-low beam integrated lamp further includes a heat dissipation shell 300, a panel 400, and a lamp panel 500, wherein the lens 130 is arranged on the panel 400, and the lamp beads 110 are arranged on the lamp panel 500.

[0060] The heat dissipation shell 300 includes a mounting cavity 310, and the light cup 120, the lamp beads 110, and the lamp panel 500 are all mounted in the mounting cavity 310. The mounting cavity 310 includes a mounting surface 311, and the lamp panel 500 is attached and fixed to the mounting surface 311, thereby improving the heat dissipation effect of the lamp panel 500. The light cup 120 is fixedly connected with the lamp panel 500. The fixed connection can be achieved by clamping, screw connection, or the like.

[0061] As shown in Figure 10 The light cup 120 includes a first open portion 121 and a second open portion 122, and the first open portion 121 and the second open portion 122 are arranged adjacent to each other and communicate with each other. The first open portion 121 is arranged opposite to the lens 130, and the light reflected by the reflecting surface of the light cup 120 is emitted to the lens 130 through the first open portion 121. The second open portion 122 is provided with the lamp panel 500.

[0062] The heat dissipation shell 300 is provided with an opening part 320, and the lens 130 partially extends out of the opening part 320. The opening part 320 is in communication with the mounting cavity 310.

[0063] The panel 400 includes two connecting arms 410 which are respectively arranged on two sides of the lens 130. The panel 400 is integrally formed, and the connecting arms 410 and the lens 130 are in an integral structure. The number of the lens 130 on the panel 400 can be set as required, and each lens 130 corresponds to one light emitting module 100.

[0064] As shown in Figure 11 , the inner side wall of the opening part 320 is provided with a connecting groove 321 corresponding to the connecting arm 410, and the connecting arm 410 is inserted into the corresponding connecting groove 321. As shown in Figure 2 , after the assembly of the lens 130 and the heat dissipation shell 300 is completed, the end cover 600 is conveniently installed on both sides of the heat dissipation shell 300, so as to realize the installation and fixation of the lens 130 and the closure of the end part of the connecting groove 321.

[0065] The connecting groove 321 is provided with a first sealing member 322 and a second sealing member 323 which are respectively arranged on both sides of the thickness direction of the connecting arm 410 and are in sealing contact with the connecting arm 410.

[0066] The connecting groove 321 is further provided with a first installation groove 324 and a second installation groove 325, the first installation groove 324 is used for installation and positioning of the first sealing member 322, and the second installation groove 325 is used for installation and positioning of the second sealing member 323. The first sealing member 322 is in sealing contact with the inner wall of the first installation groove 324, and the second sealing member 323 is in sealing contact with the inner wall of the second installation groove 325.

[0067] The first sealing member 322 and the second sealing member 323 can play a sealing role to prevent external water, water vapor and the like from entering the mounting cavity 310 to generate fog or cause short circuit of electronic devices and other abnormal conditions. The first sealing member 322 and the second sealing member 323 can be elastic sealing strips.

[0068] The installation surface 311 is provided with an inner recess 330 on the side close to the opening part 320, and the inner recess 330 is located in the mounting cavity 310, and the driving device 210 is arranged in the inner recess 330. By arranging the inner recess 330, the space inside the mounting cavity 310 is effectively utilized, and the installation of the driving device 210 is realized.

[0069] The outer part of the heat dissipation shell 300 is provided with heat dissipation fins, so as to improve the heat dissipation effect.

[0070] The light-emitting modules 100 are arranged in sequence along a preset path.

[0071] In this embodiment, the preset path comprises a line segment, and the light-emitting modules 100 are arranged in sequence along the line segment.

[0072] In other embodiments, the preset path can be circular or rectangular, etc. For example, as shown in FIG. 2, the preset path is circular, and the light-emitting modules 100 are divided into a plurality of groups, and the light-emitting modules 100 in each group are arranged in sequence along the same circular path (i.e., distributed in a ring array). Figure 12 For another example, as shown in FIG. 3, the preset path is rectangular, and the light-emitting modules 100 are divided into a plurality of groups, and the light-emitting modules 100 in each group are arranged in sequence along the same rectangular path (i.e., distributed in a rectangular array). Figure 13 In the drawings, the preset path is represented by a dashed line for easy observation, and it should be noted that the dashed line does not exist in the actual product.

[0073] In this embodiment, a vehicle is also provided, comprising a vehicle body, and the high-beam / low-beam integrated lamp mentioned above is arranged on the vehicle body.

Claims

1. A high / low beam integrated headlight, used in vehicles, characterized in that, The device includes a light-emitting module and a light-shielding module corresponding to the light-emitting module. The light-emitting module includes LED beads, a light cup, and a lens. The light-shielding module includes a driving device and a light-blocking plate. The LED beads, the lens, and the light-blocking plate are aligned in height and are all parallel to a preset direction. The LED bead is disposed in the light cup, and the reflective surface of the light cup is used to reflect the light generated by the LED bead. The lens is used to transmit the light reflected by the light cup. The light-gathering surface of the lens includes a first facet and a second facet along the preset direction. The first facet and the second facet are arranged sequentially along the preset direction and symmetrically positioned on both sides of the center surface of the lens. The two sides of the center surface are a first side and a second side, respectively. The first facet is located on the first side, and the second facet is located on the second side. The light-shielding module is installed on the second side. The driving device is used to drive the light-blocking plate to move along the preset direction, so that the light-blocking plate moves to a first position or a second position; The distance between the top of the light-blocking plate and the center surface of the lens is 'a', and the radius of the light-incoming surface of the lens is 'r'. When the top of the light-blocking plate is flush with the center surface, a = 0; when the top of the light-blocking plate is located on the first side, a < 0; when the top of the light-blocking plate is located on the second side, a > 0. When the light-blocking plate is in the first position, the light-emitting module is in low beam mode: -0.5r≤a≤0.5r; When the light-blocking plate is in the second position, the light-emitting module is in high beam mode: 0.5r < a ≤ r.

2. The integrated high and low beam lamp according to claim 1, characterized in that, The LED bead is positioned at the focal point of the reflective surface of the light cup; the light-inlet surface of the lens faces the reflective surface of the light cup, wherein the LED bead is located in the area facing the second surface. The distance between the LED bead and the light-gathering surface is b, and the distance between the LED bead and the center surface of the lens is c; wherein, 0.5r≤b≤2r, 0.25r≤c≤0.5r.

3. The integrated high and low beam lamp according to claim 1, characterized in that, It includes a heat dissipation housing, a panel, and a lamp board, wherein the lens is disposed on the panel and the lamp beads are disposed on the lamp board; The heat dissipation housing includes a mounting cavity, in which the light cup, the LED bead, and the lamp board are all mounted; the mounting cavity includes a placement surface, in which the lamp board is attached and fixed; the light cup is fixedly connected to the lamp board. The light cup includes a first opening and a second opening, which are adjacent to and connected to each other; the first opening is positioned opposite to the lens, and the light reflected by the reflective surface of the light cup is directed to the lens through the first opening; the second opening is provided with the lamp plate; The heat dissipation housing has an opening, and the lens extends out of the opening; the panel includes a connecting arm; there are two connecting arms, which are respectively placed on both sides of the lens; a connecting groove is provided on the inner sidewall of the opening, and the connecting groove corresponds to the connecting arm, wherein the connecting arm is inserted into the corresponding connecting groove; The connecting groove is provided with a first sealing element and a second sealing element, which are respectively located on both sides of the connecting arm in the thickness direction and are in sealing contact with the connecting arm; wherein, the connecting groove is also provided with a first placement groove and a second placement groove, the first placement groove being used for installing and positioning the first sealing element, and the second placement groove being used for installing and positioning the second sealing element; the first sealing element is in sealing contact with the inner wall of the first placement groove, and the second sealing element is in sealing contact with the inner wall of the second placement groove; The mounting surface has a recessed portion on the side near the opening, the recessed portion being located within the mounting cavity, wherein the driving device is disposed within the recessed portion.

4. The integrated high and low beam lamp according to claim 3, characterized in that, The heat dissipation housing is provided with heat dissipation fins on its exterior.

5. The integrated high and low beam lamp according to claim 1, characterized in that, There are multiple light-emitting modules, which are arranged sequentially along a preset path.

6. The integrated high and low beam lamp according to claim 5, characterized in that, The preset path includes line segments, circles, or rectangles.

7. The integrated high and low beam lamp according to claim 1, characterized in that, The driving device includes a base, an electromagnet, and a moving magnet; An inner cavity is provided through the base; The electromagnet is fixedly installed at the bottom of the inner cavity and is sealed to the inner cavity; The movable magnet is slidably disposed at the top of the inner cavity; The movable magnet portion is located outside the inner cavity; wherein, the light-blocking plate is provided on the top of the movable magnet, and the light-blocking plate is located outside the inner cavity; An elastic element is provided on the top of the base; wherein the elastic element is located outside the inner cavity and is sleeved on the moving magnet; The bottom of the moving magnet is provided with a receiving cavity; wherein, when the light-emitting module is in high beam mode, the electromagnet is inserted into the receiving cavity.

8. The integrated high and low beam lamp according to claim 7, characterized in that, The moving magnet is slidably and sealed to the inner cavity; A vent pipe is provided on the base, and the vent pipe is connected to the inner cavity. An air pump is connected to the vent pipe; the air pump is used to inflate or de-inflate the inner cavity through the vent pipe to change the air pressure inside the inner cavity. As the light-blocking plate moves from the first position to the second position, the air pump is used to evacuate the inner cavity through the vent pipe, so that the inner cavity is under negative pressure. As the light-blocking plate moves from the second position to the first position, the air pump inflates the inner cavity through the vent pipe, so that the air pressure inside the inner cavity gradually increases to a preset pressure value.

9. The integrated high and low beam lamp according to claim 1, characterized in that, The second face is covered with an electrochromic film; The vehicle is equipped with a detection module, which is used to detect the conditions in front of the vehicle. When the light-emitting module is in high beam mode, and the detection module detects a target object in front of the vehicle: Based on the distance between the vehicle and the target object, the light-blocking plate remains in the second position and reduces the light transmittance of the electrochromic film; wherein, when the distance between the vehicle and the target object is less than a preset distance, the light transmittance of the electrochromic film is reduced to the minimum; during the process of controlling the electrochromic film to reduce its light transmittance, if a malfunction is detected in the electrochromic film, the light-blocking plate is controlled to move from the second position to the first position; The detection module includes solid-state lidar and / or millimeter-wave radar, and the target object includes a vehicle or a pedestrian.

10. A vehicle, characterized in that, The vehicle includes a vehicle body, on which a high beam headlight is provided as described in any one of claims 1-9.

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