WO2021115365A1 - 一种前照车灯 - Google Patents

一种前照车灯 Download PDF

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Publication number
WO2021115365A1
WO2021115365A1 PCT/CN2020/135154 CN2020135154W WO2021115365A1 WO 2021115365 A1 WO2021115365 A1 WO 2021115365A1 CN 2020135154 W CN2020135154 W CN 2020135154W WO 2021115365 A1 WO2021115365 A1 WO 2021115365A1
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WO
WIPO (PCT)
Prior art keywords
light
light source
module
light guide
low
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Application number
PCT/CN2020/135154
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English (en)
French (fr)
Inventor
黄剑炜
顾世坤
郑闪光
Original Assignee
惠州市弗朗特光电科技有限公司
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Publication of WO2021115365A1 publication Critical patent/WO2021115365A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to the technical field of vehicle lamp lighting, in particular to a headlight of a vehicle.
  • the headlight is set on the head of the vehicle body and used for lighting and warning during the night driving of the motor vehicle. It is one of the important components to ensure the safe driving of the motor vehicle. Although there are corresponding headlamps that have the function of integrating high beam, low beam and front position lamp. However, the existing front-light integrated headlights with far and near beams still have certain limitations in the lighting range when turning and going up and down during the night driving of the vehicle. The driver has a blind spot of vision when turning and going up and down during the night driving of the vehicle. Greatly increase the potential safety hazards.
  • the purpose of the present invention is to solve the problems existing in the prior art and provide a headlight for a vehicle, which includes:
  • Light source module which adopts LED array light source, including low beam light source, high beam light source, curved light source and ramp light source;
  • the light guide module is used to guide the light emitted by the light source module.
  • the light guide module includes a low light guide, a high light guide, a curved light guide, and a ramp light guide;
  • An optical processing module which is used to shape the light emitted by the light guide module to obtain the required light distribution pattern on the target surface
  • the control module is used to control the light source module and make the illumination states of the low beam light source, the high beam light source, the curved light source and the ramp light source independent of each other;
  • the light entrance port of the light guide module is connected with the light source module, and the exit end face of the light guide module corresponds to the optical processing module, and the optical processing module performs independent light distribution in a specific area according to the lighting state of the light source module.
  • the optical processing module includes a light blocking plate and a light distribution lens, and the light blocking plate is arranged between the low beam light source and the high beam light source, so that the parts of the light distribution lens located on both sides of the light blocking plate are respectively used for the low beam. Light distribution and high beam light distribution.
  • an upper light-shielding surface and a lower light-shielding surface are provided on the side of the light-shielding plate facing the low light guide, and an oblique light-shielding surface is provided between the upper light-shielding surface and the lower light-shielding surface.
  • the angle between the oblique light-shielding surface and the horizontal plane is 30°-60°.
  • the light distribution lens includes a low-beam light distribution area and a high-beam light distribution area.
  • the low-beam light distribution area is located above the light barrier and faces the exit end of the low-beam light guide.
  • the zone is located under the light barrier and faces the exit end of the high beam light guide.
  • the light incident surface and the light exit surface of the low beam light distribution area are both quadric surfaces.
  • both the light incident surface and the light exit surface of the high beam light distribution area are quadric surfaces.
  • the center lines of the low beam light source and the low beam light guide deviate from the central axis of the light distribution lens by an angle of 10°-15°.
  • the optical processing module further includes a homogenization module, and the homogenization module is used to homogenize the shape of the high beam.
  • a heat dissipation module is further included, and the heat dissipation module is used to dissipate heat from the light source module.
  • the light source module has a low-beam light source and a high-beam light source, while also adding a curved light source and a ramp light source.
  • the illumination status of the low beam light source, the high beam light source, the curved light source and the ramp light source are independent of each other. , Can realize the target area divided area control, not only can improve the illumination, but also can reduce the driver's blind area of vision, and reduce the potential safety hazard.
  • LED array light sources not only combines the far and near lights of the headlights into one, but also adds a curved light source and a ramp light source, which improves the space utilization rate and makes the car light compact.
  • Figure 1 is a schematic diagram of the structure of the headlight of the present invention.
  • Figure 2 is an exploded view of Figure 1 with the shell removed;
  • Fig. 3 is a schematic diagram of the structure of the light barrier in Fig. 2;
  • FIG. 4 is a schematic diagram of the structure of the light distribution lens in FIG. 2;
  • Figure 5 is a rear view of Figure 1;
  • Figure 6 is a right side view of the cooling module with the cooling fan removed;
  • Figure 7 is an exploded view of the cooling module with the cooling fan removed
  • Light source module 2. Light guide module, 21. Low light guide, 22. High light guide, 23. Curved light guide, 23a Left bend light guide, 23b. Right bend Light guide, 24 ramp light guide, 24a. Uphill light guide, 24b. Downhill light guide, 3.
  • Optical processing module 31. Light barrier, 311. Upper shading surface, 312. Lower shading surface, 313. Oblique shading surface, 32.
  • Light distribution lens 321. Low beam light distribution area, 322. High beam light distribution area, 33. Uniform light module, 4. Heat dissipation module, 41. Heat conduction seat, 411. Longitudinal partition groove, 42. Radiator, 421. Mounting hole, 422. Mounting slot, 43. Heat spreader, 431. Evaporation section, 432. Condensation section, 433. Connection section, 44. Cooling fan, 5. Shell, 6. Fixed bracket, 311. Upper shading surface, 312. Lower shading surface, 313. Oblique shading surface, 32. Light distribution lens, 321. Low beam light distribution area, 322. High beam light distribution area, 33.
  • first”, “second”, etc. in the present invention are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish between The same technical terms describe only the components or operations, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include at least one of the features.
  • the technical solutions between the various embodiments can be combined with each other, but they must be based on what can be achieved by a person of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that such a combination of technical solutions does not exist. , Also does not fall within the scope of protection required by the present invention.
  • FIG. 1 is a schematic structural diagram of the headlight of the present invention
  • FIG. 2 is an exploded view of FIG. 1 with the housing removed.
  • the headlight of the present application includes: a light source module 1, which adopts an LED array light source, including a low beam light source, a high beam light source, a curved light source, and a ramp light source; a light guide module 2, which uses To transmit the light emitted by the light source module 1, the light guide module 2 includes a low light guide 21, a high light guide 22, a curved light guide 23, and a ramp light guide 24; an optical processing module 3, which is used for alignment The light emitted by the light guide module 2 is shaped to obtain the required light distribution pattern on the target surface; the control module (not marked in the figure) is used to control the light source module 1 and make the low beam light source, the high beam light source, and the curved light source
  • the illumination status of the road light source and the ramp light source are independent of each other; the heat diss
  • the headlamp of this embodiment is provided with a housing 5 and a fixing bracket 6, and the heat dissipation module 4 is provided with a mounting platform for installing the light source module 1, and the housing One end of 5 is connected with the heating module 5, and forms a containing cavity with the heating module 5.
  • the fixing bracket 6 is arranged in the containing cavity and connected with the heating module 5.
  • the light source module 1, the light guide module 2, the optical processing module 3 and the control module are provided In the accommodating cavity, the low beam light source, high beam light source, curved light source and ramp light source are arrayed and arranged on the installation platform on the heat dissipation module 4, low beam light source, high beam light source, curved light source and ramp The light source is electrically connected to the control module and controlled by the control module.
  • the low light guide 21, the high light guide 22, the curved light guide 23 and the ramp light guide 24 are fixed on the fixed bracket 6, and the entrance of the low light guide 21
  • the light port is connected to the low beam light source
  • the exit end face of the low light guide 21 corresponds to the optical processing module 3
  • the light entrance port of the high light guide 22 is connected to the high beam light source
  • the exit end face of the high light guide 22 corresponds to the optical processing module 3
  • the light entrance of the curved light guide 23 is connected with the curved light source
  • the exit end of the curved light guide 23 corresponds to the optical processing module 3
  • the light entrance of the ramp light guide 24 is connected with the ramp light source
  • the ramp The exit end surface of the light guide 24 corresponds to the optical processing module 3
  • the optical processing module 3 is arranged in the containing cavity, and the light exit surface of the optical processing module 3 protrudes from the other end of the housing 5.
  • the curve light source includes a left curve light source and a right curve light source
  • the curve light guide 23 includes a left curve light guide 23a and a right curve light guide.
  • the light device 23b, the left curve light source and the right curve light source are separately arranged on the left and right sides of the high beam light source.
  • the entrance ports of the left curve light guide 23a and the right curve light guide 23b are respectively connected to the left curve light source and the right curve light source.
  • the right curve light source is connected, and the exit end faces of the left curve light guide 23a and the right curve light guide 23b correspond to the optical processing module 3.
  • the left curve light source or right curve light source of the light source module 1 is automatically turned on, which can reduce the driver's blind spot of vision and reduce safety risks.
  • the ramp light source includes an uphill light source and a downhill light source
  • the ramp light guide 24 includes an uphill light guide 24a and a downhill light guide 24b.
  • the uphill light source is arranged below the high beam light source
  • the downhill light source is arranged above the low beam light source
  • the entrances of the uphill light guide 24a and the downhill light guide 24b are aligned with the uphill light source and the downhill light source, respectively.
  • the exit end faces of the uphill light guide 24a and the downhill light guide 24b correspond to the optical processing module 3.
  • the uphill light source or the downhill light source of the light source module 1 is automatically turned on, which can reduce the driver's blind spot of vision and reduce potential safety hazards.
  • the low beam of the front light is the most frequently used car light.
  • the low beam light source and the low beam guide 21 The number is two, the entrance ports of the two low-beam light guides 21 are connected to the low-beam light source, and the exit end surface of the low-beam light guide 21 corresponds to the optical processing module 3.
  • the two low beam light sources, the high beam light source, the left curve light source, the right curve light source, the uphill light source and the downhill light source are arranged in an array, the low beam light source is located above the high beam light source, and the left curve light source The light source and the right curve light source are separately arranged on the left and right sides of the high beam light source, the downhill light source is arranged above the low beam light source, and the uphill light source is arranged below the high beam light source.
  • the light sources of the light source module 1 are arranged in an array to realize the addition of the up and down auxiliary light path system and the left and right corner auxiliary light path system in the integrated system of far and near light, which greatly increases the safety performance of the car; at the same time, the optical processing module 3 illuminates according to each light source Perform independent control at different positions to obtain a target light shape that meets national standards.
  • the light guide 21 In order to maximize the projected range of the light emitted by the light source module 1 on the optical processing module 3 after passing through the light guide module 2, and at the same time make the light source module 1 occupy a small space, please refer to Figure 2, as shown in the figure, near the light guide 21.
  • the high-beam light guide 22, the curved light guide 23 and the ramp light guide 24 all use tapered light guides, so that the cross section of the light exit is larger than the cross section of the light entrance.
  • the near light guide 21, the far light guide 22, the curved light guide 23, and the ramp light guide 24 can use a total internal reflection cone prism, a cone-shaped cylindrical light guide, or a cone.
  • the low light guide 21, the high light guide 22, the curved light guide 23, and the ramp light guide 24 of this embodiment adopt tapered cylindrical light guides.
  • the optical processing module 3 includes a light blocking plate 31 and a light distribution lens 32.
  • the light blocking plate 31 is arranged between the low beam light source and the high beam light source, so that the light distribution lens 32 is located on the light blocking plate 31
  • the parts on both sides are used for the low-beam light distribution and the high-beam light distribution respectively.
  • the low light guide 21 and the downhill light source are partially aligned with the light distribution lens 32 located above the light barrier 31, and the high light guide 22, the left corner light source, the right corner light source, and the uphill light source are aligned with the light distribution lens 32 above the light barrier 31.
  • the light distributing lens 32 located under the light blocking plate 31 is partially aligned.
  • FIG. 3 is a schematic diagram of the structure of the light blocking plate in FIG. 2;
  • FIG. 4 is a schematic diagram of the structure of the light distribution lens in FIG.
  • the light distribution lens 32 includes a low-beam distribution area 321 and a high-beam distribution area 322.
  • the low-beam distribution area 321 is located above the light barrier 31 and faces the exit end of the low-beam light guide 21.
  • the exit end surface of the down-slope light guide 24b and the low-beam light distribution area 321 above the low-beam light guide 21 are aligned with the low-beam light distribution area 321, and the high-beam light distribution area 322 is located below the light barrier 31 and is connected to the high-beam light guide.
  • the exit end of the light guide 22 faces straight, the left corner light guide 23a and the right corner light guide 23b arranged on the left and right sides of the high beam light guide 22, and the uphill light guide arranged below the high light guide 22
  • the exit end surface of the device 24a is aligned with the high beam light distribution area 322.
  • the light incident surface and the light output surface of the low beam light distribution area 321 are both quadric surfaces, and the light incident surface of the high beam light distribution area 322 and The light exit surfaces are all quadric surfaces, the shape of the light blocking plate 31 on the side close to the light distribution lens 32 is an arc shape, and the light blocking plate 31 is located on the light incident surface of the low beam light distribution area 321 and the light incident light of the high beam light distribution area 322 Where the surface meets.
  • the light incident surface and the light output surface of the low beam light distribution area 321 and the high beam light distribution area 322 of this embodiment are both aspherical quadric surfaces.
  • the side of the light shielding plate 31 facing the light guide 21 is provided with an upper light-shielding surface 311 and a lower light-shielding surface 312, an upper light-shielding surface 311 and a lower light-shielding surface 312
  • an oblique light-shielding surface 313 in between.
  • the angle between the oblique light-shielding surface 313 and the horizontal plane is 45°, and the oblique light-shielding surface 313 is set on the right side of the incoming light direction.
  • the center line of the low-beam light source and the low-beam light guide 21 deviates from the center axis of the light distribution lens 32 by 12°. angle.
  • the light beam emitted by the low-beam light guide 21 is condensed on the light barrier 3.
  • the light beam is shaped by the light barrier 3 and is converged by the light distribution lens 32 and then emitted to obtain the required light distribution pattern.
  • the irradiation range of the low-beam light source is one horizontal line and horizontal line
  • the light-dark dividing line of 45° upward on the right side meets the standard of the light-dark dividing line, and is a wider illumination area compared to the prior art.
  • the optical processing module 3 further includes a light homogenization module 33, which is used to homogenize the high beam light shape.
  • the homogenization module 33 may adopt a fly-eye lens or a scattering material coated on the surface of the condenser lens.
  • the homogenization module 33 of this embodiment adopts a fly-eye lens, and the beam of the high beam light source is emitted by the high beam light guide 22 and then is transmitted by the homogenization module. 33 is homogenized, and then converges in the high beam light distribution area 322 of the light distribution lens 32 to obtain the required composite standard light intensity distribution.
  • Figure 5 is a rear view of Figure 1.
  • the headlight vehicle of this embodiment further includes a heat dissipation module 4, which is used to dissipate heat from the light source module 1.
  • the heat dissipation module 4 includes a heat conduction seat 41, a radiator 42, a heat exchanger 43, and a heat dissipation fan 44.
  • One side of the heat conduction seat 41 is provided with a mounting platform.
  • the other side of the heat conduction seat 41 is provided with a longitudinal partition groove 411.
  • the longitudinal partition groove 411 is located on the mounting platform and Below the part where the low-beam light source is aligned; the radiator 42 is arranged under the installation platform and is aligned with the high-beam light source part; the heat spreader 43 is arranged in the radiator 42; wherein the installation platform is used to fix the light source module 1, which is longitudinally partitioned
  • the groove 411 is used for dissipating heat for the body of the heat conducting seat 41, and the heat sink 42 and the heat spreader 43 are used for dissipating heat for the part of the installation platform where the high beam light source is installed.
  • the heat sink 42 includes a plurality of heat dissipation fins, and the plurality of heat dissipation fins are stacked longitudinally, and the gap between the plurality of heat dissipation fins and the longitudinal partition groove 411 The gaps are communicated with each other, which facilitates air circulation, and can better dissipate heat of the heat conducting seat 41, thereby reducing the temperature of the heat conducting seat.
  • Figure 6 is a right side view of the cooling module with the cooling fan removed;
  • Figure 7 is an exploded view of the cooling module with the cooling fan removed.
  • the heat exchanger 43 is U-shaped and includes an evaporation section 431, a condensation section 432, and a connecting section 433.
  • the two ends of the evaporation section 431 are connected with a connecting section 433, and the condensation section 432 passes through the connecting section 433.
  • the heat spreader 43 is used to conduct heat at the high beam light source.
  • the U-shaped heat spreader 43 increases the length of the heat spreader 43 without changing the height of the heat spreader 43, which can lead to a larger amount of heat at the high beam light source.
  • the radiator 42 is provided with a mounting hole 421 and a mounting groove 422.
  • One of the condensation sections 432 penetrates the mounting hole 421, and the other condensation section 432 is placed in the installation Inside the groove 422 and connected with the installation platform of the heat conducting seat 41.
  • the mounting hole 421 and the mounting groove 422 are arranged along the thickness direction of the heat sink 42.
  • a part of the condensing section 432 penetrating the mounting hole 421 is placed in the interlayer heat dissipation fins, and the other part is placed in the gap between the heat dissipation fins of each layer for heat dissipation.
  • the condenser 42 has a better heat dissipation effect on the condensing section 432; one side of the condensing section 432 placed in the installation groove 422 is placed in contact with the installation groove 422, and the other side is closely attached to the installation platform of the heat conducting seat 41, which can lead out the high beam The heat at the light source.
  • the evaporation section 431 extends to the longitudinal partition groove 411 and is connected to the part of the longitudinal partition groove 411 close to the radiator 42, which can not only maximize the heat at the high beam source through heat conduction
  • the heat sink 43 can also be exported, and the heat at the low beam light source can also be exported through the heat exchanger 43. While improving the heat dissipation efficiency of the heat dissipation module, the structure of the heat dissipation module is also more compact, which can reduce the cost.
  • the heat spreader 43 in this embodiment has a hollow structure, and the heat spreader 43 contains a heat conduction medium inside; the heat conduction medium can significantly reduce the thermal resistance of the heat spreader 43 and improve the heat dissipation efficiency.
  • the inside of the heat exchanger 43 of this embodiment is in a vacuum state; in the vacuum state, the boiling point of the heat transfer medium is reduced, and the liquid is evaporated by the evaporation section 431, and condenses in the condensation section 432 to take away heat, so that it can be used more quickly when the car lights are working.
  • the heat dissipation enhances the heat dissipation performance and meets the heat dissipation requirement of the light source module 1 under high power.
  • the installation platform of this embodiment is provided with positioning holes (not marked in the figure), and the positioning holes are used for positioning when fixing the light source module and accurately positioning the position of the light source module.
  • the heat dissipation fan 44 of the heat dissipation module of this embodiment is arranged on the side of the heat conduction base 41 where the longitudinal partition groove 411 is provided, and is detachably connected to the heat conduction base 41.
  • the heat dissipation fan 44 is connected to the heat conduction base 41 through a buckle (not marked in the figure) provided on the heat conduction base 41.
  • the heat dissipation fan 44 can quickly transfer the heat of the LED light source conducted on the radiator 42 to ensure that the LED light source is at a normal operating temperature.
  • the light source module on the installation platform starts to generate heat.
  • the heat conduction seat 41 conducts the heat at the low beam light source and radiates heat through the longitudinal partition groove 411 to circulate the outside air.
  • the condensing section 432 in contact with the installation platform will be far away.
  • the heat at the light source is taken out, and at the same time the part of the evaporation section 431 in contact with the longitudinal partition groove 411 conducts the heat at the longitudinal partition groove 411, the radiator 42 dissipates the heat from the heat spreader 43, and cools the high beam light source and the low beam light source;
  • the heat dissipation fan 44 is started, and quickly dissipates the heat conducted by the longitudinal partition groove 411 and the radiator 42 through convection, so as to ensure that the headlights are in a normal working temperature environment. .
  • the control module activates the low-beam light source, and the low-beam light guide 21 connected to the low-beam light source guides the light beam to the low-beam light distribution area 321, and the light beams emitted by the low-beam light guide 21 converge At the light barrier 3, the light beam is shaped by the light barrier 3 and converged by the light distribution lens 32 before being emitted to obtain the required light distribution pattern;
  • the control module activates the left corner light source or right
  • the curve light source, the left curve light guide 23a connected to the left curve light source or the right curve light guide 23b connected to the right curve light source conducts the light beam to the high beam light distribution area 322, and the light beam is shaped by the light barrier 3 After being converged by the light distribution lens 32, it is emitted and the required light distribution pattern is obtained, which reduces the blind spot of the driver's vision and reduces potential safety hazards.
  • the uphill light source When the vehicle needs to go uphill, the uphill light source is turned on because the headlights are upward as a whole, so that the uphill light guide 24a emits light to the high beam light distribution area 322 under the light distribution lens 32; when the vehicle needs to go downhill Because the headlights are tilted downward as a whole, the downhill light source is turned on, so that the downhill light guide 24b emits light to the upper part of the light distribution lens 32 into the light distribution area 321, which can reduce the driver’s blind area of vision and reduce safety Hidden danger
  • the control module activates the high-beam light source, and the high-beam light guide 22 connected to the high-beam light source guides the light beam to the low- and high-beam light distribution area 322, and the light is emitted through the low-beam light guide 21
  • the light beam is homogenized by the light homogenizing module 33, and then converged in the high beam light distribution area 322 of the light distribution lens 32 to obtain the required composite standard light intensity distribution.
  • this embodiment The structure and function of this embodiment are the same as the first embodiment. The difference is that in this embodiment, the angle between the oblique light shielding surface 313 of the light blocking plate 31 and the horizontal plane is 30°, and the center of the low beam light source and the low beam light guide 21 The line deviates from the central axis of the light distribution lens 32 by an angle of 10°.
  • this embodiment The structure and function of this embodiment are the same as the first embodiment. The difference is that in this embodiment, the angle between the oblique light-shielding surface 313 of the light blocking plate 31 and the horizontal plane is 60°, and the center of the low-beam light source and the low-beam light guide 21 is 60°. The line deviates from the central axis of the light distribution lens 32 by an angle of 15°.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种前照车灯，其包括：光源模块(1)，其采用LED阵列式光源，包括近光光源、远光光源、弯道光源和坡道光源；导光器模块(2)，其用于传导光源模块(1)发出的光，导光器模块(2)包括近光导光器(21)、远光导光器(22)、弯道导光器(23)和坡道导光器(24)；光学处理模块(3)，其用于对导光器模块(2)射出的光进行整形，以在目标面得到需要的配光图形；控制模块，其用于控制光源模块(1)，并使近光光源、远光光源、弯道光源和坡道光源的照明状态相互独立；利用LED阵列式光源不仅将前照车灯远近光合二为一，而且还加入了弯道照明和坡道照明，提高了空间利用率，使车灯结构紧凑，可以实现目标面分区域控制，还可以提高照明度。

Description

一种前照车灯 技术领域
本发明涉及车灯照明技术领域，具体地，涉及一种前照车灯。
背景技术
前照灯是设置在车身头部并用于机动车夜间行驶过程中进行照明和警示作用的，是保障机动车安全行驶的重要部件之一。虽然目前已有相应的前照灯具备集远光灯、近光灯及前位灯一体的功能。但是现有的远近光一体化前照车灯，在车辆夜间行驶过程中转弯及上下坡时的照明范围还是有一定的局限性，车辆夜间行驶过程中转弯及上下坡时驾驶员存在视野盲区，大大增加了安全隐患。
发明内容
本发明的目的在于解决现有技术存在的问题，提供一种前照车灯，其包括：
光源模块，其采用LED阵列式光源，包括近光光源、远光光源、弯道光源和坡道光源；
导光器模块，其用于传导光源模块发出的光，导光器模块包括近光导光器、远光导光器、弯道导光器和坡道导光器；
光学处理模块，其用于对导光器模块射出的光进行整形，以在目标面得到需要的配光图形；
控制模块，其用于控制光源模块，并使近光光源、远光光源、弯道光源和坡道光源的照明状态相互独立；
其中，导光器模块的入光口与光源模块连接，导光器模块的出射端面对应光学处理模块，光学处理模块依据光源模块的照明状态在特定区域进行独立配光。
根据本发明的一实施方式，光学处理模块包括挡光板和配光透镜，挡光 板设于近光光源和远光光源之间，以使配光透镜位于挡光板两侧的部分分别用于近光配光和远光配光。
根据本发明的一实施方式，挡光板朝向近光导光器的一侧设有上遮光面和下遮光面，上遮光面和下遮光面之间设有斜遮光面。
根据本发明的一实施方式，斜遮光面与水平面的夹角为30°-60°。
根据本发明的一实施方式，配光透镜包括近光配光区和远光配光区，近光配光区位于挡光板上方且与近光导光器的出射端面对正，远光配光区位于挡光板下方且与远光导光器的出射端面对正。
根据本发明的一实施方式，近光配光区的入光面和出光面均为为二次曲面。
根据本发明的一实施方式，远光配光区的入光面和出光面均为为二次曲面。
根据本发明的一实施方式，近光光源及近光导光器的中心线相对配光透镜中心轴偏离10°-15°的夹角。
根据本发明的一实施方式，光学处理模块还包括匀光模块，匀光模块用于对远光光形均匀化。
根据本发明的一实施方式，还包括散热模块，散热模块用于对光源模块散热。
本发明的有益效果为：
1.光源模块在具有近光光源和远光光源的同时还加入了弯道光源和坡道光源，通过控制模块使近光光源、远光光源、弯道光源和坡道光源的照明状态相互独立，可以实现目标面分区域控制，不仅可以提高照明度，还可以减小驾驶员的视野盲区，降低安全隐患。
2.利用LED阵列式光源不仅将前照车灯远近光合二为一，而且还加入了弯道光源和坡道光源，提高了空间利用率，使车灯结构紧凑。
附图说明
图1为本发明的前照车灯的结构示意图；
图2为图1移去壳体后的爆炸图；
图3为图2中挡光板的结构示意图；
图4为图2中配光透镜的结构示意图；
图5为图1的后视图；
图6为散热模块移去散热风扇后的右视图；
图7为散热模块移去散热风扇后的爆炸图；
图中：1.光源模块、2.导光器模块、21.近光导光器、22.远光导光器、23.弯道导光器、23a左弯道导光器、23b.右弯道导光器、24坡道导光器、24a.上坡导光器、24b.下坡导光器、3.光学处理模块、31.挡光板、311.上遮光面、312.下遮光面、313.斜遮光面、32.配光透镜、321.近光配光区、322.远光配光区、33.匀光模块、4.散热模块、41.导热座、411.纵向隔断槽、42.散热器、421.安装孔、422.安装槽、43.导热器、431.蒸发段、432.冷凝段、433.连接段、44.散热风扇、5.壳体、6.固定支架
本发明功能的实现及优点将结合实施例，参照附图做进一步说明。
具体实施方式
以下将以图式揭露本发明的多个实施方式，为明确说明起见，许多实务上的细节将在以下叙述中一并说明。然而，应了解到，这些实务上的细节不应用以限制本发明。也就是说，在本发明的部分实施方式中，这些实务上的细节是非必要的。此外，为简化图式起见，一些习知惯用的结构与组件在图式中将以简单的示意的方式绘示之。
需要说明，本发明实施例中所有方向性指示(诸如上、下、左右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，在本发明中如涉及“第一”、“第二”等的描述仅用于描述目的， 并非特别指称次序或顺位的意思，亦非用以限定本发明，其仅仅是为了区别以相同技术用语描述的组件或操作而已，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
为能进一步了解本发明的内容、特点及功效，兹例举以下实施例，并配合附图详细说明如下：
实施例一
请参阅图1及2，图1为本发明的前照车灯的结构示意图；图2为图1移去壳体后的爆炸图。如图所示，本申请的前照车灯包括：光源模块1，其采用LED阵列式光源，包括近光光源、远光光源、弯道光源和坡道光源；导光器模块2，其用于传导光源模块1发出的光，导光器模块2包括近光导光器21、远光导光器22、弯道导光器23和坡道导光器24；光学处理模块3，其用于对导光器模块2射出的光进行整形，以在目标面得到需要的配光图形；控制模块(图中未标示)，其用于控制光源模块1，并使近光光源、远光光源、弯道光源和坡道光源的照明状态相互独立；散热模块4，其用于对光源模块1散热；其中，导光器模块2的入光口与光源模块1连接，导光器模块2的出射端面对应光学处理模块3，光学处理模块3依据光源模块1的照明状态在特定区域进行独立配光。
请复阅图2，如图所示，具体应用时，本实施例的前照车灯设有壳体5和固定支架6，散热模块4上设有用于安装光源模块1的安装平台，壳体5一端与发热模块5连接，并与发热模块5构成容纳腔，固定支架6设于容纳腔内并与发热模块5连接，光源模块1、导光器模块2、光学处理模块3及控制模块设于容纳腔内，其中近光光源、远光光源、弯道光源和坡道光源阵列 式排布并设于散热模块4上的安装平台，近光光源、远光光源、弯道光源和坡道光源与控制模块电连接并由控制模块控制，近光导光器21、远光导光器22、弯道导光器23和坡道导光器24固定在固定支架6，近光导光器21的入光口与近光光源连接，近光导光器21的出射端面对应光学处理模块3，远光导光器22的入光口与远光光源连接，远光导光器22的出射端面对应光学处理模块3，弯道导光器23的入光口与弯道光源连接，弯道导光器23的出射端面对应光学处理模块3，坡道导光器24的入光口与坡道光源连接，坡道导光器24的出射端面对应光学处理模块3；光学处理模块3设于容纳腔，光学处理模块3的出光面从壳体5另一端伸出。
请复阅图2，如图所示，在本实施例中，弯道光源包括左弯道光源和右弯道光源，弯道导光器23包括左弯道导光器23a和右弯道导光器23b，左弯道光源和右弯道光源分设于远光光源的左侧和右侧，左弯道导光器23a和右弯道导光器23b的入射口分别与左弯道光源和右弯道光源连接，左弯道导光器23a和右弯道导光器23b的出射端面对应光学处理模块3。当汽车向左或向右转弯时，在控制模块的控制下，光源模块1的左弯道光源或右弯道光源自动打开，可以减小驾驶员的视野盲区，降低安全隐患。
请复阅图2，如图所示，在本实施例中，坡道光源包括上坡光源和下坡光源，坡道导光器24包括上坡导光器24a和下坡导光器24b，上坡光源设于远光光源的下方，下坡光源设于近光光源的上方，上坡导光器24a和下坡导光器24b的入射口分别与上坡光源和下坡光源对正，上坡导光器24a和下坡导光器24b的出射端面对应光学处理模块3。当汽车在夜晚行驶上或下坡时，在控制模块的控制下，光源模块1的上坡光源或下坡光源自动打开，可以减小驾驶员的视野盲区，降低安全隐患。
在实际应用中，前车灯的近光灯是使用最频繁的车灯，为了提高近光灯的照明度，请复阅图2，如图所示，近光光源和近光导光器21的数量为两个，两个近光导光器21的入射口与近光光源连接，近光导光器21的出射端面对 应光学处理模块3。
在本实施例中，两个近光光源、远光光源、左弯道光源、右弯道光源、上坡光源和下坡光源阵列式排布，近光光源位于远光光源上方，左弯道光源和右弯道光源分设于远光光源的左侧和右侧，下坡光源设于近光光源的上方，上坡光源设于远光光源的下方。光源模块1的个光源阵列式排布，实现在远近光一体的系统中加入上下坡辅助光路系统和左右弯道辅助光路系统，大大增加了汽车安全性能；同时，光学处理模块3依据各个光源照明的不同位置进行独立的控制，得出符合国家标准目标光形。
为了使光源模块1发出的光经导光器模块2后在光学处理模块3投射的范围最大化，同时使光源模块1占用空间小，请复阅图2，如图所示，近光导光器21、远光导光器22、弯道导光器23和坡道导光器24均采用锥形导光器，以使出光口的截面大于入光口的截面。近光导光器21、远光导光器22、弯道导光器23和坡道导光器24可以采用全内反射锥形棱镜，也可以采用锥形柱体导光器，还可以采用锥形导光槽，本实施例的近光导光器21、远光导光器22、弯道导光器23和坡道导光器24采用锥形柱体导光器。
请复阅图2，如图所示，光学处理模块3包括挡光板31和配光透镜32，挡光板31设于近光光源和远光光源之间，以使配光透镜32位于挡光板31两侧的部分分别用于近光配光和远光配光。在本实施例中，近光导光器21和下坡光源与位于挡光板31上方的配光透镜32部分对正，远光导光器22、左弯道光源、右弯道光源和上坡光源与位于挡光板31下方的配光透镜32部分对正。
请参阅图3及4，图3为图2中挡光板的结构示意图；图4为图2中配光透镜的结构示意图。如图所示，配光透镜32包括近光配光区321和远光配光区322，近光配光区321位于挡光板31上方且与近光导光器21的出射端面对正，设于近光导光器21的上方的下坡导光器24b与近光配光区321的出射端面与近光配光区321对正，远光配光区322位于挡光板31下方且与远光 导光器22的出射端面对正，设于远光导光器22左右两侧的左弯道导光器23a和右弯道导光器23b及设于远光导光器22下方的上坡导光器24a的出射端面与远光配光区322对正。
请复阅图3及4，如图所示，在本实施例中，近光配光区321的入光面和出光面均为为二次曲面，远光配光区322的入光面和出光面均为为二次曲面，挡光板31靠近配光透镜32一侧的形状为圆弧形，挡光板31位于近光配光区321的入光面和远光配光区322的入光面的衔接处。为了减小光束形变，同时使配光透镜32厚度变薄，本实施例的近光配光区321和远光配光区322的入光面和出光面均采用非球面二次曲面。
请复阅图4，如图所示，在本实施例中，挡光板31朝向近光导光器21的一侧设有上遮光面311和下遮光面312，上遮光面311和下遮光面312之间设有斜遮光面313。斜遮光面313与水平面的夹角为45°，斜遮光面313设置在迎光方向的右侧，近光光源及近光导光器21的中心线相对配光透镜32中心轴偏离12°的夹角。经近光导光器21出射的光束汇聚于挡光板3，光束经挡光板3整形并经配光透镜32汇聚后射出并得到需要的配光图形，近光光源的照射范围内存在一水平线和水平线右侧向上45°的明暗分界线，满足明暗分界线标准，且相对于现有技术为较宽阔的照明区域。
请复阅图2，如图所示，在本实施例中，光学处理模块3还包括匀光模块33，匀光模块33用于对远光光形均匀化。匀光模块33可以采用复眼透镜或者采用在聚光透镜表面镀散射材料，本实施例的匀光模块33在采用复眼透镜，远光光源的光束经远光导光器22射出后，被匀光模块33均匀化，然后在配光透镜32的远光配光区322汇聚后，得到所需复合标准的光强分布。
请复阅图1、2及5，图5为图1的后视图。如图所示，本实施例的前照灯车还包括散热模块4，散热模块4用于对光源模块1散热。散热模块4包括导热座41、散热器42、导热器43和散热风扇44，导热座41一侧设有安装平台导热座41另一侧设有纵向隔断槽411，纵向隔断槽411位于安装平台 与近光光源对正的部分的下方；散热器42设于安装平台下方且与远光光源部分对正；导热器43设于散热器42内；其中，安装平台用于固定光源模块1，纵向隔断槽411用于为导热座41的本体散热，散热器42和导热器43用于为安装平台安装远光光源的部分散热。
请复阅图5，如图所示，在本实施例中，散热器42包括多个散热鳍片，多个散热鳍片纵向叠置，多个散热鳍片之间的间隙与纵向隔断槽411之间的间隙相互连通，便于空气流通，可以更好的使导热座41散热，进而降低导热座的温度。
请参阅图6及7，图6为散热模块移去散热风扇后的右视图；图7为散热模块移去散热风扇后的爆炸图。如图所示，在本实施例中，导热器43为U型，包括蒸发段431、冷凝段432和连接段433，蒸发段431的两端连接有连接段433，冷凝段432通过连接段433连接于蒸发段431两侧。导热器43用于导出远光光源处的热量，U型的导热器43在不改变导热器43的高度的同时，增加了导热器43的长度，可以更大量地导出远光光源处的热量。
请复阅图6及7，如图所示，在本实施例中，散热器42设有安装孔421和安装槽422，其中一条冷凝段432贯穿安装孔421，另一条冷凝段432置于安装槽422内且与导热座41的安装平台连接。其中安装孔421和安装槽422沿散热器42的厚度方向设置，贯穿安装孔421的冷凝段432的一部分置于隔层散热鳍片内，另一部分置于各层散热鳍片的间隙内使散热器42对该冷凝段432的散热效果更好；置于安装槽422内的冷凝段432的一侧置与安装槽422接触，另一侧与导热座41的安装平台紧贴，可以导出远光光源处的热量。
请复阅图6及7，如图所示，蒸发段431向纵向隔断槽411延伸并与纵向隔断槽411靠近散热器42的部分连接，不仅可以最大化的将远光光源处的热量通过导热器43导出，还可以将近光光源处的热量也通过导热器43导出，在提高散热模块的散热效率的同时，使散热模块的结构也更加的紧凑，可以减少成本
本实施例的导热器43为中空结构，导热器43内部盛装有导热介质；导热介质可显著的降低导热器43的热阻，提升散热效率。
本实施例的导热器43内部呈真空状；在真空状态下，导热介质的沸点降低，液体由蒸发段431蒸发，在冷凝段432凝结带走热量，这样能更快速地在车灯工作时为其散热，使得散热性能增强，满足大功率下光源模块1散热需求。
本实施例的安装平台设有定位孔(图中未标示)，定位孔用于在固定光源模块时定位，精确定位光源模块的位置。
请复阅图5，如图所示，本实施例的散热模块的散热风扇44设于导热座41设有纵向隔断槽411的一侧，且与导热座41可拆卸连接。散热风扇44通过设于导热座41上的卡扣(图中未标示)与导热座41连接。散热风扇44可以将散热器42上传导的LED光源的热量迅速传递出去，以保证所述LED光源处于正常的工作温度。前照车灯工作时，设于安装平台的光源模块开始发热，导热座41将近光光源处的热量导出，并通过纵向隔断槽411与外界空气流通进行散热，安装平台接触的冷凝段432将远光光源处的热量导出，同时蒸发段431与纵向隔断槽411接触的部分将纵向隔断槽411处的热量导出，散热器42为导热器43散热，并使远光光源和近光光源降温；在此过程中，散热风扇44启动，速通过对流将纵向隔断槽411和散热器42传导的热量迅速散出，以保证前照车灯处于正常的工作温度环境。。
具体应用时：
车辆在照明度较好的路况行驶时，控制模块启动近光光源，与近光光源连接的近光导光器21将光束向近光配光区321传导，经近光导光器21出射的光束汇聚于挡光板3，光束经挡光板3整形并经配光透镜32汇聚后射出并得到需要的配光图形；
当车辆需要向左或向右转弯时，由于前照车灯随车头转弯方向向左或向右倾斜，使车辆左侧或右侧存在视野盲区，此时控制模块启动左弯道光源或 右弯道光源，与左弯道光源连接的左弯道导光器23a或与右弯道光源连接的右弯道导光器23b将光束向远光配光区322传导，光束经挡光板3整形并经配光透镜32汇聚后射出并得到需要的配光图形，减小驾驶员的视野盲区，降低安全隐患。
当车辆需要上坡时，由于前照灯整体向上仰，开启上坡光源，使上坡导光器24a将光向配光透镜32下部分远光配光区322射出；当车辆需要下坡时，由于前照灯整体向下倾斜，开启下坡光源，使下坡导光器24b将光向配光透镜32上部分进光配光区321射出，可以减小驾驶员的视野盲区，降低安全隐患；
当车辆在照明度较差的路况行驶时，控制模块启动远光光源，与远光光源连接的远光导光器22将光束向近远光配光区322传导，经近光导光器21出射的光束被匀光模块33均匀化，然后在配光透镜32的远光配光区322汇聚后，得到所需复合标准的光强分布。
实施例二
本实施例的结构及功能与实施例一相同，区别点在于，本实施例中，挡光板31的斜遮光面313与水平面的夹角为30°，近光光源及近光导光器21的中心线相对配光透镜32中心轴偏离10°的夹角。
实施例三
本实施例的结构及功能与实施例一相同，区别点在于，本实施例中，挡光板31的斜遮光面313与水平面的夹角为60°，近光光源及近光导光器21的中心线相对配光透镜32中心轴偏离15°的夹角。
以上仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换或改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种前照车灯，其特征在于，包括：
    光源模块(1)，其采用LED阵列式光源，包括近光光源、远光光源、弯道光源和坡道光源；
    导光器模块(2)，其用于传导所述光源模块(1)发出的光，所述导光器模块(2)包括近光导光器(21)、远光导光器(22)、弯道导光器(23)和坡道导光器(24)；
    光学处理模块(3)，其用于对导光器模块(2)射出的光进行整形，以在目标面得到需要的配光图形；
    控制模块，其用于控制光源模块(1)，并使所述近光光源、远光光源、弯道光源和坡道光源的照明状态相互独立；
    其中，所述导光器模块(2)的入光口与光源模块(1)连接，所述导光器模块(2)的出射端面对应光学处理模块(3)，所述光学处理模块(3)依据光源模块(1)的照明状态在特定区域进行独立配光。
  2. 根据权利要求1所述的前照车灯，其特征在于，所述光学处理模块(3)包括挡光板(31)和配光透镜(32)，所述挡光板(31)设于所述近光光源和远光光源之间，以使所述配光透镜(32)位于所述挡光板(31)两侧的部分分别用于近光配光和远光配光。
  3. 根据权利要求2所述的前照车灯，其特征在于，所述挡光板(31)朝向所述近光导光器(21)的一侧设有上遮光面(311)和下遮光面(312)，上遮光面(311)和下遮光面(312)之间设有斜遮光面(313)。
  4. 根据权利要求3所述的前照车灯，其特征在于，所述斜遮光面(313)与水平面的夹角为30°-60°。
  5. 根据权利要求2所述的前照车灯，其特征在于，所述配光透镜(32)包括近光配光区(321)和远光配光区(322)，所述近光配光区(321)位于 所述挡光板(31)上方且与所述近光导光器(21)的出射端面对正，所述远光配光区(322)位于所述挡光板(31)下方且与所述远光导光器(22)的出射端面对正。
  6. 根据权利要求5所述的前照车灯，其特征在于，所述近光配光区(321)的入光面和出光面均为为二次曲面。
  7. 根据权利要求5所述的前照车灯，其特征在于，所述远光配光区(322)的入光面和出光面均为为二次曲面。
  8. 根据权利要求2所述的前照车灯，其特征在于，所述近光光源及近光导光器(21)的中心线相对配光透镜(32)中心轴偏离10°-15°的夹角。
  9. 根据权利要求2所述的前照车灯，其特征在于，所述光学处理模块(3)还包括匀光模块(33)，所述匀光模块(33)用于对远光光形均匀化。
  10. 根据权利要求1所述的前照车灯，其特征在于，还包括散热模块(4)，所述散热模块(4)用于对所述光源模块(1)散热。
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