CN211119164U - High beam and low beam integrated vehicle headlight - Google Patents

Abstract

The utility model discloses an integrative vehicle headlamps of far and near light, including the heat dissipation support, the branch is located the nearly light source group and the far light source group of both sides about the heat dissipation support, the nearly light reflector that corresponds with nearly light source group, the far light reflector that corresponds with far light source group, nearly light source group includes first L ED light source unit, first L ED light source unit includes a plurality of first L ED light sources, far light source group includes exciting light unit and wavelength conversion unit, exciting light unit includes laser source unit and second L ED light source unit, wavelength conversion unit's position corresponds with the focus of far light reflector, it excites wavelength conversion unit jointly by the exciting light unit that laser source unit and second L ED light source unit constitute to set up in far light source group, the laser beam of laser source unit transmission has collimation nature good, energy concentration's characteristic, can improve the central illuminance and the light beam concentration of far light beam greatly, set up second L ED light source unit simultaneously and be used for the light filling, further improve the illuminating effect of far light beam.

Description

High beam and low beam integrated vehicle headlight

Technical Field

The utility model relates to the field of lighting technology, concretely relates to integrative vehicle headlamps of far and near light.

Background

With the development of semiconductor technology, L ED (L light Emitting Diode) light source is gradually replacing traditional incandescent lamp and energy saving lamp due to its advantages of high efficiency, energy saving, environmental protection, low cost and long life, and becomes a general lighting source.

In the conventional L ED automobile headlamp, a L ED light source is positioned at the focus of a reflector of an automobile lamp, and light beams emitted by a L ED light source are collected by the reflector of the automobile lamp and distributed by a rear-end optical system (comprising a baffle, a lens and the like) to finally project required far and near light field distribution.

SUMMERY OF THE UTILITY MODEL

The utility model provides an integrative vehicle headlamps of far and near light to solve the far light beam center luminance that exists among the prior art not enough and the problem that the light beam is not concentrated.

In order to solve the technical problem, the technical scheme of the utility model is that:

a vehicle headlamp integrating high beam and low beam comprises a radiating support, a low beam light source group and a high beam light source group which are respectively arranged on the upper side and the lower side of the radiating support, a low beam light reflecting bowl corresponding to the low beam light source group, a high beam light reflecting bowl corresponding to the high beam light source group, a movable light shielding plate and a lens which are arranged at the front end of the radiating support, and a radiating fin group arranged at the rear end of the radiating support, wherein the low beam light source group comprises a first L ED light source unit, the first L ED light source unit comprises a plurality of first L ED light sources, the high beam light source group comprises an excitation light unit and a wavelength conversion unit, the excitation light unit comprises a laser source unit and a second L ED light source unit, the position of the wavelength conversion unit corresponds to the focus of the high beam light reflecting bowl, a laser beam emitted by the laser source unit and a light beam emitted by the second L ED light source unit are respectively projected onto the wavelength conversion unit and excite to emit fluorescence, and the fluorescence is emitted in an appointed direction after being reflected by the.

Further, the light that short-distance beam light source group sent passes through the parallel outgoing of oblique below of following after the reflection of short-distance beam reflector, the light that the high beam light source group sent passes through the parallel outgoing of oblique top of following after the reflection of high beam reflector.

Further, a plurality of first L ED light sources are packaged into a whole by taking the focus of the low-beam light reflecting bowl as the center.

Furthermore, laser source unit and wavelength conversion unit are located respectively the both sides of far-reaching beam reflector, be equipped with on the far-reaching beam reflector and be used for seeing through the logical light portion of laser beam.

Further, the laser source unit further includes one or a combination of two or more of a collimating unit, a beam angle changing unit, and a focusing unit, and the collimating unit, the beam angle changing unit, and the focusing unit are disposed along the optical path.

Further, the laser source unit comprises one or more laser sources, and the light-passing part is provided with one or more laser sources.

Further, the second L ED light source unit includes a substrate and at least one L ED chip, and the wavelength conversion unit includes at least one phosphor layer, the phosphor layer is disposed on the L ED chip or on the substrate, one phosphor layer is disposed above each L ED chip, and the phosphor layer is disposed below the substrate.

Furthermore, the high beam reflector is a curved mirror, the wavelength conversion unit is located at a focus of the curved mirror, the L ED chip and the phosphor layer are respectively provided with one, and the laser beam is projected to the center of the upper surface of the phosphor layer.

Furthermore, the high beam reflector is a curved mirror, the L ED chips and the phosphor layers are multiple in number, the phosphor layers are closely arranged and located at the focal point of the curved mirror, each L ED chip is provided with a corresponding phosphor layer, a reflection interface is arranged between the L ED chip and the substrate, and the laser beam is projected onto each phosphor layer or one of the phosphor layers.

Furthermore, far-reaching light reflector is formed by a plurality of curved mirror concatenations, L ED chip and phosphor layer are equipped with a plurality ofly respectively, and are a plurality of phosphor layer gap distribution, every phosphor layer is located the focus department that corresponds a curved mirror, every L ED chip top corresponds a phosphor layer, L ED chip with be equipped with reflection interface between the substrate, the laser beam projects on every phosphor layer or projects on one of them phosphor layer.

The utility model provides an integrative vehicle headlamps of far and near light, locate including heat dissipation support, branch near light source group and far light source group of both sides about the heat dissipation support, with near light reflector that near light source group corresponds, with far light reflector that far light source group corresponds, locate but the movable light screen and the lens of heat dissipation support front end and locate the fin group of heat dissipation support rear end, near light source group includes first L ED light source unit, first L ED light source unit includes a plurality of first L ED light sources, far light source group includes exciting light unit and wavelength conversion unit, exciting light unit includes laser source unit and second L ED light source unit, wavelength conversion unit's position with far light reflector's focus corresponds, the laser beam of laser source unit transmission and the light beam of second L light source unit transmission throw respectively to wavelength conversion unit goes up and laser and send fluorescence, fluorescence passes through after far light reflection according to appointed direction outgoing set up in light source group and set up by far light source unit and second L light source unit transmission, the common luminous energy of laser source L light source is used for the light beam of far light source 4625, and the light source is concentrated light beam, and the common luminous energy conversion unit is used for the light beam, and the light source is improved the direct light source and is improved the characteristic is improved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a high-beam and low-beam integrated vehicle headlamp according to the present invention;

fig. 2 is a schematic structural view of an embodiment of a low beam light source group of the present invention;

FIG. 3 is a schematic view of one embodiment of the present invention in which a laser beam is projected onto the upper surface of a wavelength conversion unit;

fig. 4 is a schematic structural diagram of an embodiment of a wavelength conversion unit according to the present invention;

fig. 5 is a schematic structural diagram of another embodiment of the wavelength conversion unit of the present invention;

fig. 6 is a schematic structural diagram of an embodiment of the present invention, which includes a plurality of curved mirrors.

The LED light source comprises a heat dissipation support 10, a low-beam light source group 20, a first L ED light source 210, a first L ED light source 311, a laser source unit 312, a second L ED light source unit 313, a focusing unit 314, a substrate 315, a L ED chip 316, a reflection interface 320, a wavelength conversion unit 321, a fluorescent powder layer 317, a laser source 40, a low-beam light reflecting bowl 50, a high-beam light reflecting bowl 510, a light transmitting part 520, a curved mirror 60, a movable light shading plate 70, a lens 80 and a heat dissipation plate group 80.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

as shown in fig. 1-3, the present invention provides a vehicle headlamp integrating high beam and low beam, including a heat dissipation bracket 10, a low beam light source group 20 and a high beam light source group separately disposed on upper and lower sides of the heat dissipation bracket 10, a low beam light reflector 40 corresponding to the low beam light source group 20, a high beam light reflector 50 corresponding to the high beam light source group, a movable light shield 60 and a lens 70 disposed at a front end of the heat dissipation bracket 10, and a heat dissipation plate group 80 disposed at a rear end of the heat dissipation bracket 10, the low beam light source group 20 includes a first L ED light source unit, the first L light source unit includes a plurality of first L light sources 210, the high beam light source group includes an excitation light source unit and a wavelength conversion unit 320, the excitation light source unit includes a laser light source unit 311 and a second L ED light source unit 312, the wavelength conversion unit 320 corresponds to a focus of the high beam light reflector 50, the laser beam emitted from the laser source unit 311 and the second L light source unit 312 are projected onto the wavelength conversion unit 320 and emit a fluorescent light beam, the fluorescent light source unit 312 emits a high beam, and the fluorescent light beam passes through the fluorescent light reflector 34, the high beam, the fluorescent reflector 110 forms a high beam, when the high beam emits a high beam, the high beam passes through the low beam reflected by the low beam led light source unit 110, the low beam, the fluorescent reflector 60, the fluorescent reflector 110, the fluorescent reflector 100, the fluorescent reflector forms a high beam, the fluorescent reflector 110, the fluorescent reflector 14, the fluorescent reflector forms a high beam, the fluorescent reflector 14, the fluorescent reflector 3 and the fluorescent reflector.

Preferably, passing light reflector 40 and distance light reflector 50 are the curved surface structure, distance light reflector 50's camber is less than distance light reflector 50's camber, and when practical application, the facula of passing light beam is wide more than high ellipse, and consequently the passing light reflector 40 camber that corresponds is less, and the facula of distance light beam is high more than wide ellipse, and consequently the distance light reflector 50 camber that corresponds is great.

With reference to fig. 1, the light emitted from the low-beam light source set 20 is reflected by the low-beam light reflecting bowl 40 and then emitted in parallel along an oblique lower direction, and finally refracted by the lens 70 to form a low-beam light beam. The light emitted by the high beam light source group is reflected by the high beam reflector 50 and then exits in parallel along the oblique upper direction, and finally is refracted by the lens 70 to form a high beam.

Referring to fig. 2, the first L ED light sources 210 are integrally packaged with the focus of the low-beam light reflecting bowl 40 as a center, in this embodiment, 9 first L ED light sources 210 are fixed on the upper surface of the heat dissipation bracket 10, and form an array of 3 × 3 with the focus of the low-beam light reflecting bowl 40 as a center, although other numbers are possible, and are not limited herein.

Preferably, the laser source unit 311 and the wavelength conversion unit 320 are respectively disposed on two sides of the far-light reflecting bowl 50, and the far-light reflecting bowl 50 is provided with a light transmitting portion 510 for transmitting the laser beam, specifically, the number of the light transmitting portions 510 may be one or more, and may be a through hole, or a through hole provided with a transparent member through which the laser beam can pass, or a transparent member through which the laser beam can pass, which is integrated with the far-light reflecting bowl 50, and may be a transparent plate having a filter, and the transparent plate may transmit the laser beam, and reflect fluorescence, i.e., white light, excited by the wavelength conversion unit 320, so that the fluorescence emitted by the wavelength conversion unit 320 can be prevented from leaking from the light transmitting portion 510, the light transmitting portion 510 is used to guide the laser beam to the wavelength conversion unit 320, and may be an oval, circular or other shape, and the size is adapted to the diameter of the laser beam, so that the laser beam passes through the laser source unit 311 is mounted on the other side of the wavelength conversion unit 320 opposite to the far-light reflecting bowl 50, so that the structure of the laser source unit 311 and the light emitting unit 311 may be further simplified as the ED conversion unit L.

Preferably, the laser source unit 311 includes one or more laser sources 317, which are designed according to the power of output light, particularly the central illumination, and of course, a plurality of laser sources 317 may be disposed in the laser source unit 311, and the number of currently operating laser sources 317 is selected according to the need when in use, for example, the laser sources are selected through a switch or other elements, so that the convenience of use and the general performance can be further improved. The number of the light-passing parts 510 is one or more, specifically, when there is only one laser source 317, there is also one light-passing part 510 correspondingly; when the number of the laser sources 317 is multiple, that is, greater than or equal to 2, the number of the light-passing portions 510 may be only one, and at this time, the light beams emitted by the multiple laser sources 317 share one light-passing portion 510; of course, the light-passing portion 510 may be provided in plural, corresponding to the laser light sources 317 one by one, and each light-passing portion 510 is used for guiding the laser beam emitted by the corresponding laser light source 317 to the wavelength conversion unit 320. In this embodiment, the laser source 317 is preferably a semiconductor laser, that is, a laser diode, and has the characteristics of small size and long service life, so that the size of the device is further reduced, and the service life and stability are improved. The semiconductor laser used here may be an element having 1 light emitting point on 1 chip, or may be an element having a plurality of light emitting points on 1 chip.

Preferably, the laser source unit 311 further includes one or a combination of two or more of a collimating unit (not shown), a beam angle changing unit (not shown), and a focusing unit 313, and the collimating unit, the beam angle changing unit, and the focusing unit 313 are disposed along the optical path. The collimating unit may be disposed at an outlet of the laser source 317, and usually employs a collimating lens or other beam collimating element for converting the output laser light into collimated parallel light, so as to further improve the collimation of the laser beam. The beam angle changing unit is used for deflecting the laser beam to change the advancing direction of the laser beam, so that the whole system is compact in structure, the beam angle changing unit can adopt a plane reflector or a curved reflector, can also adopt a metal film or a dielectric film and the like, the same effect can be achieved, and certainly, when the using space is not limited, the angle of the semiconductor laser can be directly adjusted to save the beam angle changing unit, so that the cost is reduced. The focusing unit 313 may adopt a focusing lens or other focusing elements for converging the laser beam to be better projected onto the wavelength conversion unit 320 through the light-transmitting part 510, and at the same time, the curved surface of the focusing unit 313 may be adjusted to form light with a proper size when the laser beam is incident on the wavelength conversion unit 320, as shown in fig. 1, only the focusing unit 313 is used in the laser source unit 311, and in actual use, one of the collimating unit, the beam angle changing unit and the focusing unit 313 may be selected for use alone or two or three of them may be selected for use in combination, and the positions of the three may be arranged according to the use space requirement, as long as it is ensured that the laser beam can be projected onto the wavelength conversion unit 320 through the light-transmitting part 510.

Preferably, the second L ED light source unit 312 includes a substrate 314 and at least one L ED chip 315, the wavelength conversion unit 320 includes at least one phosphor layer 321, the phosphor layer 321 is disposed on the L ED chip 315 or on the substrate 314, one phosphor layer 321 is disposed above each L ED chip 315, and one phosphor layer is disposed below each L ED chip 314.

Preferably, the far-light reflecting bowl 50 is a curved mirror, the wavelength conversion unit 320 is located at a focal point of the curved mirror, the L ED chip 315 and the phosphor layer 321 are respectively provided with one, and the laser beam is projected to a center of an upper surface of the phosphor layer 321, as shown in fig. 3, the phosphor layer 321 is located above the L ED chip 315, and the phosphor layer 321 is located below the L ED chip 315 and connected to the substrate 314 through a reflective interface 316, specifically, the substrate 314 has two functions, that is, on one hand, heat generated by the L ED chip 315 is conducted downward, on the other hand, an electrode is provided on the substrate 314 and connected to an external power supply for supplying power to the L ED chip 315, in this embodiment, the L ED chip 315 is a light emitting diode and is integrated on a chip, and emits a light beam, i.e., excitation light, a part of the excitation light is transmitted upward and enters the phosphor layer 321 to excite a phosphor portion therein to generate phosphor, and on the other part of the excitation light is transmitted downward and is incident on the reflective interface 316, the reflective interface 316 has a high reflectivity, and the same part of the excitation light emitted by the phosphor layer 315, and the phosphor layer L is sufficiently utilized to generate the excitation light, and the excitation light emitted by the ED chip.

In the present embodiment, the phosphor layer 321 and the L ED chip 315 are detachably connected, so as to be easily replaced, and may be adhered to the L ED chip 315 through an adhesion process, or may be disposed on the L ED chip 315 through a transparent snap, or the like, as long as the detachable connection is achieved, the upper and lower surfaces of the phosphor layer 321 may receive excitation from the laser source and the L ED chip 315, respectively, so as to make the phosphor layer 321 have higher brightness, so as to meet the requirement of the high beam application in the automotive headlamp, of course, the phosphor layer 321 and the corresponding L ED chip 315 may be packaged together, even the wavelength conversion unit 320 and the L ED chip 315 may be packaged together, so as to reduce the difficulty of assembly and improve the relative position stability of the two, however, the phosphor layer 321 or L may be replaced, and the wavelength conversion unit 320 and the 5636 ED chip 315 may be packaged together, as long as the phosphor layer may not contact with the ED chip 315, and the ED chip 315 may not be stably suspended, as long as the led layer 321 may not contact with the ED chip 315.

Preferably, the far-light reflector 50 is a curved mirror 520, the number of the L ED chips 315 and the number of the phosphor layers 321 are both multiple, the multiple phosphor layers 321 are closely arranged and located at a focal point of the curved mirror 520, one phosphor layer 321 corresponds to each of the L ED chips 315, a reflective interface 316 is disposed between the L ED chips 315 and the substrate 314, and the laser beams are projected onto each phosphor layer 321 or onto one of the phosphor layers 321. specifically, the L ED chips 315 and the number of the phosphor layers 321 are both multiple and the same, that is, L ED chips 315 and the phosphor layers 321 correspond one to one, and the laser beams are projected onto one of the phosphor layers 321, as shown in fig. 4, three of the L ED chips 315 and the phosphor layers 321 are respectively provided, of course, 2 or more than 4 are provided, the laser beams are closely arranged at the focal point of the far-light reflector 50 along a straight line, the laser beams are projected onto the upper surface of the second phosphor layer 321, and may also be projected onto the upper surface of the other phosphor layers 321, generally, the heat-radiation-resistance-light-field-enhanced-light-field-emission-light-emission-.

As shown in fig. 5-6, the far-light reflector 50 is formed by splicing a plurality of curved mirrors 520, a plurality of led chips 315 and phosphor layers 321 are respectively disposed, and a plurality of phosphor layers 321 are distributed in a gap, each phosphor layer 321 is located at a focus corresponding to one curved mirror 520, one phosphor layer 321 is located above each L ED chip 315, a reflective interface 316 is disposed between each L ED chip 315 and the substrate 314, the laser beam is projected onto each phosphor layer 321 or onto one of the phosphor layers 321, specifically, the far-light reflector 50 is formed by splicing a plurality of curved mirrors 520, each curved mirror 520 corresponds to one focus, the surface shape of the curved mirror 520 may be a paraboloid, an ellipsoid, or other curved surface, each phosphor layer 321 is located at a focus corresponding to one curved mirror 520, the number of phosphor layers 321 may be the same as the number of curved mirrors 520, both may be less than the number of curved mirrors 321, a plurality of phosphor layers 321 may be located along a straight line or other gap, the straight line pattern may be disposed between the top surface of the plurality of phosphor layers 321 and the phosphor layers 321, and the phosphor layers 321 may be disposed symmetrically, and the phosphor layers 321 may be disposed along a straight line pattern of phosphor layers, the top surface pattern of phosphor layers 321 may be disposed as well as a pattern of a phosphor layers 321, a phosphor layer 321 disposed between the top surface pattern of a phosphor layer 321 disposed along a straight line pattern, or a phosphor layer 321 disposed between the curved mirror 321, or a phosphor layer 321 disposed under a phosphor layer 321 disposed, or a substrate 314, and a phosphor layer 321 disposed symmetrically, and a phosphor layer pattern disposed under a phosphor layer, and a phosphor layer disposed under a phosphor layer 321 disposed between the substrate 321 disposed under a phosphor layer 321 disposed symmetrically, and a phosphor layer, a phosphor layer 321 disposed symmetrically, and a phosphor layer 321 disposed between the substrate 314, and a phosphor layer composed of a phosphor layer.

To sum up, the utility model provides an integrative vehicle headlamp of far and near light, including heat dissipation support 10, locate respectively near light source group 20 and far light source group of heat dissipation support 10 upper and lower both sides, with near light reflector 40 that near light source group 20 corresponds, with far light reflector 50 that far light source group corresponds, locate the movable light screen 60 and the lens 70 of heat dissipation support 10 front end and locate the fin group 80 of heat dissipation support 10 rear end, near light source group 20 includes first L ED light source unit, first L ED light source unit includes a plurality of first L ED light sources 210, far light source group includes exciting light unit and wavelength conversion unit 320, the exciting light unit includes laser source unit 311 and second L ED light source unit 312, the position of wavelength conversion unit 320 corresponds with the focus of far light reflector 50, the laser beam that laser source unit emitted and the light beam that second L emitted respectively project to wavelength conversion unit 320 and send out fluorescence, the fluorescence light source unit is used for the concentrated light beam of far and far light source is better than the light source unit 46311 and the light source is used for the light beam of far light source is better than the light source unit 46L, the light source unit is set up the light source is the light source unit and is better according to the light beam of far light source 46311 and the light source is set up the light source is better.

Although the embodiments of the present invention have been described in the specification, these embodiments are only for the purpose of presentation and should not be construed as limiting the scope of the present invention. Various omissions, substitutions, and changes may be made without departing from the spirit and scope of the invention.

Claims (10)

1. A vehicle headlamp integrating high beam and low beam comprises a radiating support, a low beam light source group and a high beam light source group which are respectively arranged on the upper side and the lower side of the radiating support, a low beam light reflecting bowl corresponding to the low beam light source group, a high beam light reflecting bowl corresponding to the high beam light source group, a movable light shielding plate and a lens which are arranged at the front end of the radiating support, and a radiating fin group arranged at the rear end of the radiating support.

2. The high-low beam integrated vehicle headlamp according to claim 1, wherein the light emitted from the low beam light source group is reflected by the low beam reflector and then emitted in parallel obliquely downward, and the light emitted from the high beam light source group is reflected by the high beam reflector and then emitted in parallel obliquely upward.

3. The high-beam and low-beam integrated vehicle headlamp as defined in claim 1, wherein a plurality of first L ED light sources are integrally packaged with the focus of the low-beam reflector as a center.

4. The high-beam and low-beam integrated vehicle headlamp according to claim 1, wherein the laser source unit and the wavelength conversion unit are respectively disposed on both sides of the high-beam reflector, and the high-beam reflector is provided with a light transmitting portion for transmitting the laser beam.

5. The high-beam and low-beam integrated vehicle headlamp according to claim 4, wherein the laser light source unit further comprises one or a combination of two or more of a collimating unit, a beam angle changing unit, and a focusing unit, and the collimating unit, the beam angle changing unit, and the focusing unit are disposed along the optical path.

6. The high-low beam integrated vehicle headlamp according to claim 4, wherein the laser light source unit comprises one or more laser light sources, and the light-passing portion is provided with one or more laser light sources.

7. The high-beam and low-beam integrated vehicle headlamp of claim 4, wherein the second L ED light source unit comprises a substrate and at least one L ED chip, the wavelength conversion unit comprises at least one phosphor layer, the phosphor layer is disposed on the L ED chip or on the substrate, one phosphor layer is disposed above each L ED chip, and the phosphor layer is disposed below the substrate.

8. The high-beam and low-beam integrated vehicle headlamp as defined in claim 7, wherein the high-beam reflector is a curved mirror, the wavelength conversion unit is located at a focal point of the curved mirror, and the L ED chip and the phosphor layer are respectively provided with one, and the laser beam is projected to a center of an upper surface of the phosphor layer.

9. The high-beam and low-beam integrated vehicle headlamp of claim 7, wherein the high-beam reflector is a curved mirror, the L ED chips and the phosphor layers are all in multiple numbers, the phosphor layers are closely arranged and located at the focal point of the curved mirror, one phosphor layer is located above each L ED chip, a reflective interface is provided between each L ED chip and the substrate, and the laser beam is projected onto each phosphor layer or one of the phosphor layers.

10. The vehicle headlamp of claim 7, wherein the high beam reflector is formed by joining a plurality of curved mirrors, the L ED chips and the phosphor layers are respectively provided in plurality, and the phosphor layers are distributed at intervals, each phosphor layer is located at a focus of a corresponding curved mirror, a phosphor layer is located above each L ED chip, a reflective interface is provided between each L ED chip and the substrate, and the laser beam is projected onto each phosphor layer or one of the phosphor layers.

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