Motor vehicle headlight and motor vehicle

Abstract

The present invention provides a motor vehicle headlight and a motor vehicle, and relates to the field of lighting technology. The motor vehicle headlight comprises: a convex lens, a low beam part and a high beam part; the high beam part comprises a high beam light source, an ellipsoidal reflective surface and a plane reflective surface, the high beam light source and the convex lens are arranged on the same side of the ellipsoidal reflective surface; the high beam light source is arranged at the first focus of the ellipsoidal reflective surface; the plane reflective surface is arranged to image the second focus of the ellipsoidal reflective surface onto the focus of the convex lens. In the motor vehicle headlight and the motor vehicle provided by the present invention, the light beam emitted by the high beam light source converges to the second focus of the ellipsoidal reflective surface after being reflected by the ellipsoidal reflective surface, but due to the effect of the plane reflective surface in the middle, it actually converges to the focus of the convex lens, so that the high beam light source is equivalently located on the axis of the convex lens, thereby avoiding the influence of the thickness of the radiator on the light effect, and improving the light effect of the motor vehicle headlight.

Description

Technical Field

[0001] The invention relates to the technical field of lighting, and in particular to a motor vehicle headlight and a motor vehicle. Background Art

[0002] Headlights include low beam and high beam, which are installed on both sides of the front of the motor vehicle to illuminate the road at night. Since the lighting effect of headlights directly affects the operation and traffic safety of night driving, the traffic management departments of various countries have stipulated their lighting standards in the form of laws.

[0003] The structure of the high and low beam integrated headlight in the prior art is as follows: Figure 1 As shown, a low-beam light source 3 and a high-beam light source 9 and a reflector 4 and a reflector 8 are arranged above and below a radiator 7, respectively, and a visor 2 is arranged at the focus of the lens 1. The visor 2, the low-beam light source 3 and the reflector 4 constitute the low-beam part of the headlight. The visor 2 shields a part of the light emitted by the low-beam light source 3, and the low-beam light 6 not blocked by the visor 2 forms the low beam. The high-beam light source 9 and the reflector 8 constitute the high-beam part of the headlight. The high-beam light 5 emitted by the high-beam light source 9 enters the lens 1 from below the visor 2, and forms the high beam together with the low-beam light 6 from the low-beam light source 3.

[0004] The radiator 7 of the headlight has light sources arranged above and below, so a certain thickness is required for heat dissipation. However, the optical design hopes that the light source is arranged on the lens axis as much as possible to achieve the best light effect. These two are contradictory, and only a relatively balanced design can be adopted. Therefore, the existing headlight cannot achieve the best light effect in the optical design. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a motor vehicle headlight and a motor vehicle, so as to improve the light efficiency of the motor vehicle headlight.

[0006] In a first aspect, an embodiment of the present invention provides a motor vehicle headlight, comprising: a convex lens, a low beam portion, and a high beam portion; the low beam portion and the high beam portion are arranged on the same side of the convex lens, and are respectively located above and below the optical axis of the convex lens;

[0007] The high beam part comprises a high beam light source, an ellipsoidal reflective surface and a plane reflective surface, wherein the high beam light source and the convex lens are arranged on the same side of the ellipsoidal reflective surface; the high beam light source is arranged at a first focus of the ellipsoidal reflective surface; the plane reflective surface is connected to the ellipsoidal reflective surface, and the plane reflective surface is arranged to image the second focus of the ellipsoidal reflective surface onto the focus of the convex lens;

[0008] The high-beam light beam emitted by the high-beam light source is first reflected by the ellipsoidal reflecting surface to the plane reflecting surface, then reflected by the plane reflecting surface to converge to the focus of the convex lens, and finally collimated by the convex lens to form a parallel light beam to form a high beam together with the low beam from the low beam part formed by the convex lens.

[0009] In combination with the first aspect, an embodiment of the present invention provides a first possible implementation of the first aspect, wherein the high beam part also includes a first heat sink, and the high beam light source is arranged on the first heat sink; the first heat sink is used to dissipate heat for the high beam light source.

[0010] In combination with the first aspect, an embodiment of the present invention provides a second possible implementation of the first aspect, wherein the high beam light source includes one or more of a halogen lamp, a discharge lamp, a light emitting diode and a laser light source.

[0011] In combination with the first aspect, the embodiment of the present invention provides a third possible implementation of the first aspect, wherein the low beam portion includes, in sequence along the propagation direction of light: a low beam light source, a focusing element, and a transparent reflector; the transparent reflector and the convex lens are arranged on the same side of the focusing element;

[0012] The lower surface of the transparent reflector is a total reflection surface, and the shape of the lower surface is consistent with the shape of the light-dark cut-off line of the low beam light type; the focus of the convex lens is located on the bottom edge of the first side surface of the transparent reflector closest to the convex lens;

[0013] The low-beam light beam emitted by the low-beam light source is focused by the focusing element and then emitted into the transparent reflector; the light that is not emitted to the lower surface is refracted to the convex lens by the transparent reflector, and the light that is emitted to the lower surface is totally reflected by the lower surface to the convex lens to form a continuous light pattern corresponding to the low-beam light pattern on the focal plane of the convex lens; the continuous light pattern is imaged by the convex lens to form the low-beam light pattern.

[0014] In combination with the third possible implementation of the first aspect, the embodiment of the present invention provides a fourth possible implementation of the first aspect, wherein the focusing element includes a curved reflector or a concentrator.

[0015] In combination with the third possible implementation of the first aspect, an embodiment of the present invention provides a fifth possible implementation of the first aspect, wherein a recessed structure is provided on the lower surface close to the first side surface and deviating from the center position, and the recessed structure is used to form a recessed shape of the light-dark cutoff line.

[0016] In combination with the fifth possible implementation of the first aspect, an embodiment of the present invention provides a sixth possible implementation of the first aspect, wherein a darkening structure is provided on the recessed structure, and the darkening structure is used to form a dark spot on the corresponding light distribution test point of the low beam light type.

[0017] In combination with the third possible implementation of the first aspect, an embodiment of the present invention provides a seventh possible implementation of the first aspect, wherein the low beam part also includes a second radiator, and the low beam light source is arranged on the second radiator; the second radiator is used to dissipate heat for the low beam light source.

[0018] In combination with the seventh possible implementation of the first aspect, the embodiment of the present invention provides an eighth possible implementation of the first aspect, wherein the ellipsoidal reflection surface and the plane reflection surface are both integrated on the outer surface of the second radiator.

[0019] In a second aspect, an embodiment of the present invention further provides a motor vehicle, comprising a vehicle body and a motor vehicle headlight as described in the first aspect or any possible embodiment thereof; the motor vehicle headlight is arranged at the head of the vehicle body.

[0020] The embodiments of the present invention bring the following beneficial effects:

[0021] In an embodiment of the present invention, a motor vehicle headlight comprises: a convex lens, a low beam portion and a high beam portion; the low beam portion and the high beam portion are arranged on the same side of the convex lens, and are respectively located above and below the optical axis of the convex lens; the high beam portion comprises a high beam light source, an ellipsoidal reflection surface and a plane reflection surface, and the high beam light source and the convex lens are arranged on the same side of the ellipsoidal reflection surface; the high beam light source is arranged at a first focus of the ellipsoidal reflection surface; the plane reflection surface is connected to the ellipsoidal reflection surface, and the plane reflection surface is arranged to image the second focus of the ellipsoidal reflection surface onto the focus of the convex lens; the high beam light beam emitted by the high beam light source is first reflected by the ellipsoidal reflection surface to the plane reflection surface, and then reflected by the plane reflection surface to converge to the focus of the convex lens, and finally collimated by the convex lens to form a parallel beam to form a high beam together with the low beam formed from the low beam portion via the convex lens. In the motor vehicle headlight and the motor vehicle provided by the embodiments of the present invention, the light beam emitted by the high-beam light source will converge to the second focus of the ellipsoidal reflecting surface after being reflected by the ellipsoidal reflecting surface. However, due to the effect of the plane reflecting surface in the middle, it will actually converge to the focus of the convex lens, so that the high-beam light source is equivalent to being located on the axis of the convex lens. Compared with the existing headlight structure, the high-beam light source of the motor vehicle headlight is not actually under the radiator, avoiding the influence of the radiator thickness on the light efficiency, thereby improving the light efficiency of the motor vehicle headlight.

[0022] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the structure of a headlight in the prior art;

[0026] Figure 2 A schematic diagram of the structure of a motor vehicle headlight provided by an embodiment of the present invention;

[0027] Figure 3 A schematic diagram of the structure of a low beam light path of a motor vehicle headlight provided by an embodiment of the present invention;

[0028] Figure 4 For Figure 3 A corresponding schematic diagram of the structure of a motor vehicle headlight;

[0029] Figure 5a A three-dimensional diagram of a transparent reflective plate provided by an embodiment of the present invention;

[0030] Figure 5b A front view of a transparent reflective plate provided by an embodiment of the present invention;

[0031] Figure 5c A bottom view of a transparent reflective plate provided by an embodiment of the present invention;

[0032] Figure 5d A right side view of a transparent reflective plate provided by an embodiment of the present invention;

[0033] Figure 6 A method based on the embodiment of the present invention is provided Figure 4 A three-dimensional image of a motor vehicle headlight;

[0034] Figure 7 A method based on the embodiment of the present invention is provided Figure 4 A front view of a motor vehicle headlight;

[0035] Figure 8 The embodiment of the present invention provides Figure 7 Reflection structure diagram of the mid and far beam parts.

[0036] icon:

[0037] 100-convex lens; 201-high-beam light source; 202-ellipsoidal reflecting surface; 203-plane reflecting surface; 204-first radiator; 301-lower-beam light source; 302-curved reflector; 303-transparent reflector; 3031-lower surface; 3032-first side surface; 3033-recessed structure; 3034-darkening structure; 304-radiator. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The thickness of the radiator under the current existing headlight structure affects the light efficiency of the headlight. Based on this, a motor vehicle headlight and a motor vehicle provided by an embodiment of the present invention can avoid the influence of the radiator thickness on the light efficiency and improve the light efficiency of the motor vehicle headlight through a new arrangement of the high beam partial reflector (ellipsoidal reflective surface and plane reflective surface).

[0040] To facilitate understanding of this embodiment, a motor vehicle headlight disclosed in an embodiment of the present invention is first introduced in detail.

[0041] Embodiment 1:

[0042] The motor vehicle headlight provided by the embodiment of the present invention comprises: a convex lens, a low beam part and a high beam part; the low beam part and the high beam part are arranged on the same side of the convex lens and are respectively located above and below the optical axis of the convex lens. Figure 2 A schematic diagram of the structure of a motor vehicle headlight provided by an embodiment of the present invention, Figure 2 The low beam portion is not shown. Figure 2 As shown, the high beam part includes a high beam light source 201, an ellipsoidal reflective surface 202 and a plane reflective surface 203, and the high beam light source 201 and the convex lens 100 are arranged on the same side of the ellipsoidal reflective surface 202 ( Figure 2The high beam light source 201 is arranged at the first focus of the ellipsoidal reflecting surface 202; the plane reflecting surface 203 is connected to the ellipsoidal reflecting surface 202, and the plane reflecting surface 203 is arranged to image the second focus of the ellipsoidal reflecting surface 202 onto the focus of the convex lens 100.

[0043] Specifically, the high beam light source 201 may be a single light source or a light group consisting of multiple light sources. The high beam light source 201 may include one or more of a halogen lamp, a discharge lamp, a light emitting diode (LED), and a laser light source. Figure 2 As shown, the second focus of the ellipsoidal reflecting surface 202 and the focus of the convex lens 100 are in a mirror relationship with respect to the plane reflecting surface 203 , that is, the plane reflecting surface 203 is located on the perpendicular plane between the second focus of the ellipsoidal reflecting surface 202 and the focus of the convex lens 100 .

[0044] The working principle of the motor vehicle headlight to form high beam is as follows: Figure 2 As shown, the high beam emitted by the high beam light source 201 is first reflected by the ellipsoidal reflection surface 202 to the plane reflection surface 203, then reflected by the plane reflection surface 203 to converge to the focus of the convex lens 100, and finally collimated by the convex lens 100 to form a parallel beam, so as to form a high beam together with the low beam formed by the convex lens 100 from the low beam part. In this way, parallel light rays are easily obtained to realize the light distribution design of the high beam.

[0045] In the motor vehicle headlamp provided by the embodiment of the present invention, the light beam emitted by the high-beam light source 201 will converge to the second focus of the ellipsoidal reflecting surface 202 after being reflected by the ellipsoidal reflecting surface 202. However, due to the action of the plane reflecting surface 203 in the middle, it will actually converge to the focus of the convex lens 100, so that the high-beam light source 201 is equivalent to being located on the axis of the convex lens 100. Compared with the existing headlamp structure, the high-beam light source of the motor vehicle headlamp is not actually under the radiator, avoiding the influence of the radiator thickness on the light efficiency, thereby improving the light efficiency of the motor vehicle headlamp.

[0046] Considering that the high beam light source 201 generates heat during the light emission process, in order to improve the heat dissipation effect of the motor vehicle headlight, Figure 2 As shown, the high beam part further includes a first radiator 204, and the high beam light source 201 is arranged on the first radiator 204. The first radiator 204 is used to dissipate heat for the high beam light source 201. Specifically, the specific type, structure and shape of the first radiator 204 are not limited here. As for the type of the first radiator 204, the material may include: metal, thermally conductive plastic or graphene, etc.; the implementation form may include: simple radiator, radiator with fan or semiconductor refrigerator, etc. For example, an aluminum alloy radiator may be used, which has the advantages of beautiful appearance, light weight, good heat dissipation performance, good energy saving effect, etc.

[0047] The motor vehicle headlight adopts a new arrangement of high beam partial reflectors (ellipsoidal reflective surface 202 and plane reflective surface 203), and takes heat dissipation (first radiator 204) into consideration, thereby improving the light efficiency and heat dissipation effect in a limited space. In addition, the first radiator 204 can also be used as a mounting component for the convex lens 100.

[0048] Considering that when the low beam part adopts the existing visor structure, there will be a dark spot corresponding to the image of the visor in the middle of the high beam pattern formed by the headlight, which affects the road lighting effect. In this embodiment, the low beam part includes: a low beam light source, a focusing element and a transparent reflector in sequence along the propagation direction of light. The transparent reflector and the convex lens are arranged on the same side of the focusing element. The lower surface of the transparent reflector is a total reflection surface, and the shape of the lower surface is consistent with the shape of the light-dark cutoff line of the low beam pattern; the focus of the convex lens is located on the bottom edge of the first side surface of the transparent reflector closest to the convex lens.

[0049] Specifically, the low beam light source can be a single light source or a lamp group composed of multiple light sources. In some possible embodiments, the light source includes one or more of a halogen lamp, a discharge lamp, an LED and a laser light source. The focusing element includes a curved reflector or a concentrator. The main body of the transparent reflector is made of transparent material, such as glass, polycarbonate PC (Polycarbonate), polymethyl methacrylate PMMA (polymethyl methacrylate), polystyrene PS (Polystyrene), silica gel or polyetherimide PEI (Polyetherimide), etc. The lower surface of the transparent reflector can be coated with a total reflection layer.

[0050] The working principle of the low beam part is as follows: the low beam light beam emitted by the low beam light source is focused by the focusing element and then incident on the transparent reflector; the light that is not directed to the lower surface is refracted to the convex lens by the transparent reflector, and the light directed to the lower surface is totally reflected to the convex lens by the lower surface (the light originally directed to the lower half of the convex lens is re-reflected to the upper part of the convex lens), so as to form a continuous light pattern corresponding to the low beam light pattern on the focal plane of the convex lens; the continuous light pattern is imaged by the convex lens to form the low beam light pattern. The low beam part uses a transparent reflector to reflect the light originally directed to the lower half of the convex lens back to the upper part of the convex lens through total reflection, thereby achieving the effect of a sunshade, and this part of the energy will strengthen the brightness of the low beam light pattern near the light-dark cutoff line when it re-enters the convex lens through total reflection, thereby eliminating the dark spot caused by the sunshade in the high beam light pattern formed by the motor vehicle headlight, which not only improves the energy utilization rate, improves the efficiency of light distribution, but also optimizes road safety.

[0051] Figure 3A schematic diagram of the structure of a low beam light path of a motor vehicle headlight provided by an embodiment of the present invention, Figure 4 For Figure 3 The corresponding schematic diagram of the structure of a motor vehicle headlight. Figure 3 and Figure 4 As shown, the low beam part is located above the high beam part, and a curved reflector 302 is used as a focusing element. The low beam light source 301 and the transparent reflector 303 are arranged on the same side of the curved reflector 302; the first side surface 3032 is the side surface of the transparent reflector 303 closest to the convex lens 100, and the focus of the convex lens is located on the bottom edge of the first side surface 3032.

[0052] Refer to the following Figure 3 The low beam light path of the motor vehicle headlight is described in detail. Figure 3 As shown, the low beam light emitted from the low beam light source 301 is reflected by the curved reflector 302 and enters the transparent reflector 303. When the light passes through the transparent reflector 303 to the convex lens 100, only refraction occurs, such as light 2. When the light enters the transparent reflector 303 and is emitted to the lower surface 3031 of the transparent reflector 303, it will be totally reflected by the lower surface 3031 to the upper part of the convex lens 100, such as light 1, so that this part of the light cannot be emitted to the lower part of the convex lens 100. All the light generates a continuous light pattern with a cut-off line on the focal plane of the convex lens 100, and then the light cut-off line of the low beam light pattern is realized through the convex lens 100 for imaging.

[0053] This embodiment also provides a specific structural diagram of a transparent reflective plate. Figure 5a to Figure 5d The transparent reflective plate is specifically described, wherein: Figure 5a A three-dimensional diagram of a transparent reflective plate provided by an embodiment of the present invention, Figure 5b A front view of a transparent reflective plate provided by an embodiment of the present invention, Figure 5c A bottom view of a transparent reflective plate provided by an embodiment of the present invention, Figure 5d A right side view of a transparent reflective plate provided in an embodiment of the present invention.

[0054] like Figure 5a and Figure 5c As shown, a concave structure 3033 is provided on the lower surface 3031 at a position close to the first side surface 3032 and deviating from the center, and the concave structure 3033 is used to form a concave shape of the light-dark cut-off line. Figure 3 and Figure 4 The transparent reflective plates 303 are all made according to Figure 5d The size and depth (relative to the depth of the lower surface 3031) of the recessed structure 3033 can be set in combination with the entire optical design of the motor vehicle headlight, for example, the depth of the recessed structure 3033 can be 0.2-1 mm.

[0055] The low beam type includes two types: left-hand driving type (corresponding to left-hand driving) and right-hand driving type (corresponding to right-hand driving). The position of the concave structure 3033 on the lower surface 3031 corresponds to the type of low beam type. Figure 5b When the low beam light type is a left-hand driving light type, the recessed structure 3033 is arranged on the left side of the lower surface 3031, such as Figure 5c When the low beam type is a right-hand driving beam type, the recessed structure 3033 is disposed on the right side of the lower surface 3031 (symmetrical to the position of the left-hand driving beam type).

[0056] Considering that the low beam light pattern corresponding to the motor vehicle headlight may exceed the corresponding prescribed illuminance at some light distribution test points (for example, for left-hand drive, the upper limit of the 50L in the regulations is 15lx (12V lighting condition), and the illuminance at 50L of the low beam light pattern may exceed 15lx), in this embodiment, a dimming structure 3034 is provided on the recessed structure 3033, and the dimming structure 3034 is used to form a dark spot at the corresponding light distribution test point of the low beam light pattern through the principle of inverted image of a convex lens. The light distribution test point corresponding to the dimming structure 3034 can be 50L (corresponding to left-hand drive) or 50R (corresponding to right-hand drive).

[0057] Specifically, the dimming structure 3034 may be a concave shape, and its shape and depth shall be set in combination with the entire optical design. The depth of the dimming structure 3034 corresponds to the illuminance of the corresponding light distribution test point in the low beam light pattern. The greater the illuminance, the greater the depth of the dimming structure 3034. The depth of the dimming structure 3034 generally does not exceed 5 mm.

[0058] This embodiment also provides Figure 6 and Figure 7 Based on the Figure 4 The structural diagram of the motor vehicle headlight, and Figure 8 shown Figure 7 The reflection structure diagram of the mid- and far-beam parts, where: Figure 6 is a three-dimensional diagram of the motor vehicle headlight, Figure 8 is the front view of the motor vehicle headlight. Figure 8 As shown, the high beam light source 201 is disposed at the first focus of the ellipsoidal reflecting surface 202 , and the ellipsoidal reflecting surface 202 is connected to the plane reflecting surface 203 .

[0059] In order to prevent the heat generated by the low beam light source 301 from affecting the life of the motor vehicle headlight, Figure 4 , Figure 6 and Figure 7As shown, the low beam part further includes a second radiator 304, and the low beam light source 301 is disposed on the second radiator 304; the second radiator 304 is used to dissipate heat for the low beam light source 301. Similarly, the specific type, structure and shape of the second radiator 304 are not limited here, for example, the second radiator 304 may also be an aluminum alloy radiator.

[0060] Further, in some possible embodiments, such as Figure 4 , Figure 6 and Figure 7 As shown, the ellipsoidal reflecting surface 202 and the plane reflecting surface 203 are both integrated on the outer surface of the second radiator 304. This facilitates the assembly of the motor vehicle headlight.

[0061] Embodiment 2:

[0062] The embodiment of the present invention also provides a motor vehicle, which includes a vehicle body and a motor vehicle headlight as described in the first embodiment, and the motor vehicle headlight is arranged at the head of the vehicle body. Specifically, the motor vehicle includes two motor vehicle headlights, and the two motor vehicle headlights are respectively arranged on both sides of the head of the vehicle body.

[0063] In an embodiment of the present invention, a motor vehicle headlight comprises: a convex lens, a low beam portion and a high beam portion; the low beam portion and the high beam portion are arranged on the same side of the convex lens, and are respectively located above and below the optical axis of the convex lens; the high beam portion comprises a high beam light source, an ellipsoidal reflection surface and a plane reflection surface, and the high beam light source and the convex lens are arranged on the same side of the ellipsoidal reflection surface; the high beam light source is arranged at a first focus of the ellipsoidal reflection surface; the plane reflection surface is connected to the ellipsoidal reflection surface, and the plane reflection surface is arranged to image the second focus of the ellipsoidal reflection surface onto the focus of the convex lens; the high beam light beam emitted by the high beam light source is first reflected by the ellipsoidal reflection surface to the plane reflection surface, and then reflected by the plane reflection surface to converge to the focus of the convex lens, and finally collimated by the convex lens to form a parallel beam to form a high beam together with the low beam formed from the low beam portion via the convex lens. In the motor vehicle provided by the embodiment of the present invention, the light beam emitted by the high-beam light source will converge to the second focus of the ellipsoidal reflecting surface after being reflected by the ellipsoidal reflecting surface. However, due to the effect of the plane reflecting surface in the middle, it will actually converge to the focus of the convex lens, so that the high-beam light source is equivalent to being located on the axis of the convex lens. Compared with the existing headlight structure, the high-beam light source of the motor vehicle headlight is not actually under the radiator, avoiding the influence of the radiator thickness on the light efficiency, thereby improving the light efficiency of the motor vehicle headlight.

[0064] The motor vehicle provided in the embodiment of the present invention has the same technical features as the motor vehicle headlight provided in the above embodiment, and can therefore solve the same technical problems and achieve the same technical effects.

[0065] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the motor vehicle described above can refer to the corresponding process in the aforementioned motor vehicle headlight embodiment, and will not be repeated here.

[0066] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.

[0067] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0068] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0070] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A motor vehicle headlight, characterized in that: include: A convex lens, a low beam portion and a high beam portion; the low beam portion and the high beam portion are arranged on the same side of the convex lens, and are respectively located above and below the optical axis of the convex lens; The high beam part comprises a high beam light source, an ellipsoidal reflective surface and a plane reflective surface, wherein the high beam light source and the convex lens are arranged on the same side of the ellipsoidal reflective surface; the high beam light source is arranged at a first focus of the ellipsoidal reflective surface; the plane reflective surface is connected to the ellipsoidal reflective surface, and the plane reflective surface is arranged to image the second focus of the ellipsoidal reflective surface onto the focus of the convex lens; The high beam emitted by the high beam light source is first reflected by the ellipsoidal reflection surface to the plane reflection surface, then reflected by the plane reflection surface to converge to the focus of the convex lens, and finally collimated by the convex lens to form a parallel beam, so as to form a high beam together with the low beam from the low beam part formed by the convex lens; The low beam part includes, in sequence along the propagation direction of light: a low beam light source, a focusing element and a transparent reflector; the transparent reflector and the convex lens are arranged on the same side of the focusing element; The lower surface of the transparent reflector is a total reflection surface, and the shape of the lower surface is consistent with the shape of the light-dark cut-off line of the low beam light type; the focus of the convex lens is located on the bottom edge of the first side surface of the transparent reflector closest to the convex lens; The low-beam light beam emitted by the low-beam light source is focused by the focusing element and then incident on the transparent reflector; the light that is not incident on the lower surface is refracted by the transparent reflector to the convex lens, and the light that is incident on the lower surface is totally reflected by the lower surface to the convex lens, so as to form a continuous light pattern corresponding to the low-beam light pattern on the focal plane of the convex lens; the continuous light pattern is imaged by the convex lens to form the low-beam light pattern; The high-beam part further includes a first radiator, and the high-beam light source is arranged on the first radiator; the first radiator is used for dissipating heat for the high-beam light source.

2. The motor vehicle headlamp according to claim 1, characterized in that: The high beam light source includes one or more of a halogen lamp, a discharge lamp, a light emitting diode and a laser light source.

3. The motor vehicle headlamp according to claim 1, characterized in that: The light-concentrating element includes a curved reflector or a concentrator.

4. The motor vehicle headlamp according to claim 1, characterized in that: A concave structure is provided on the lower surface at a position close to the first side surface and deviating from the center, and the concave structure is used to form a concave shape of the light-dark cut-off line.

5. The motor vehicle headlamp according to claim 4, characterized in that: A darkening structure is arranged on the recessed structure, and the darkening structure is used to form a dark spot on a corresponding light distribution test point of the low beam light type.

6. The motor vehicle headlamp according to claim 1, characterized in that: The low beam part further includes a second radiator, and the low beam light source is arranged on the second radiator; the second radiator is used for dissipating heat for the low beam light source.

7. The motor vehicle headlamp according to claim 6, characterized in that: The ellipsoidal reflecting surface and the plane reflecting surface are both integrated on the outer surface of the second radiator.

8. A motor vehicle, characterized in that: It comprises a vehicle body and a motor vehicle headlight as described in any one of claims 1 to 7; the motor vehicle headlight is arranged at the head of the vehicle body.

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