CN209856978U

CN209856978U - Headlight device for vehicle and motor vehicle

Info

Publication number: CN209856978U
Application number: CN201921051992.5U
Authority: CN
Inventors: 华定谟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2019-12-27
Anticipated expiration: 2029-07-05

Abstract

A headlight device for a vehicle and a motor vehicle relate to the field of auto parts. The headlight device for the vehicle comprises a reflecting bowl, a light source body and a shading sheet; the light reflecting bowl is provided with a first light reflecting inner wall and a second light reflecting inner wall which are connected with each other; the first reflective inner wall is parabolic; the light source body is positioned at the focus of the first reflective inner wall; the second reflecting inner wall is positioned above the horizontal plane where the focus is positioned, and/or the second reflecting inner wall is positioned below the horizontal plane where the focus is positioned, the shape of the second reflecting inner wall is a curved surface, a folded surface or a plane, and when the second reflecting inner wall is positioned above the horizontal plane where the focus is positioned, the curved surface does not include a part of the elliptic spherical surface; the light shading sheet is arranged on the inner wall of the light reflecting bowl, the light shading sheet is positioned on an emergent path of direct light of the light source body, and one surface of the light shading sheet facing the light source body is a matt surface. The headlight device for the vehicle and the motor vehicle effectively improve the effect of the dipped beam and strengthen the brightness of the dipped beam under the conditions of ensuring the function of the high beam and eliminating glare.

Description

Headlight device for vehicle and motor vehicle

Technical Field

The application relates to the field of auto parts, in particular to a headlamp device for a vehicle and a motor vehicle.

Background

The existing high beam is directed to the eyes of the driver of the oncoming vehicle and/or is directed to the rearview mirror of the same-direction front vehicle and then is reflected to the strong light of the eyes of the driver, which is called glare.

Specifically, glare refers to strong light emitted by a high beam to the eyes of a driver coming from the opposite side and/or to a rearview mirror in the same direction and then transmitted to the eyes of the driver, and the height of the high beam is lower than 100 cm except for a few vehicles, and the height of the eyes of the driver and the height of the rearview mirror are generally higher than 100 cm except for a few drivers with short stature. Therefore, glare is strong light that is directed to the upper left and upper right (here, up, down, front, rear, left, and right, in terms of the form of a high beam when the host vehicle is used, depending on the angle of the driver at the driving seat).

In the prior art, on the basis of a non-glare high beam, a strong high beam function is provided, but the improvement on the low beam function is less, or the low beam effect after the improvement is poor.

SUMMERY OF THE UTILITY MODEL

The application provides a vehicle headlight device and motor vehicle, effectively improves the passing light effect, strengthens the luminance of passing light.

The application provides a headlight device for a vehicle, it includes reflector, light source body and anti-dazzling screen.

The light reflecting bowl comprises a first light reflecting inner wall and a second light reflecting inner wall which are connected with each other.

The first reflective inner wall is parabolic.

The light source body is positioned at the focus of the first reflective inner wall.

The light emitting direction is defined as the front, the second reflecting inner wall is positioned above the horizontal plane where the focus is positioned, the second reflecting inner wall receives the light emitted by the light source body and totally or partially reflects the light to the front lower side, and/or the second reflecting inner wall is positioned below the horizontal plane where the focus is positioned, the second reflecting inner wall receives the light emitted by the light source body and totally or partially reflects the light to the front upper side.

The shape of the second reflective inner wall is a curved surface, a folded surface or a plane, and when the second reflective inner wall is positioned above the horizontal plane where the focus is positioned, the curved surface does not include a part of the elliptical spherical surface.

The light shading sheet is arranged on the inner wall of the light reflecting bowl, the light shading sheet is positioned on an emergent path of direct light of the light source body, and one surface of the light shading sheet facing the light source body is a matt surface.

Furthermore, the second reflecting inner wall is located above the horizontal plane where the focus is located, the second reflecting inner wall gradually shrinks towards one side away from the bowl opening end, and one end, away from the bowl opening end, of the second reflecting inner wall is lower than one end, located at the bowl opening end, of the second reflecting inner wall, so that light rays emitted by the light source body received by the second reflecting inner wall are partially or completely reflected towards the front lower side.

Furthermore, the second reflective inner wall is a curved surface formed by rotating the axis of the first reflective inner wall from the first preset position to the left and right by certain angles by taking the axis of the first reflective inner wall as a rotating shaft, and the parallel projection of the axis at the horizontal plane where the focus is located at the first preset position coincides with the axis of the first reflective inner wall.

Furthermore, the bus is a straight line segment, and the second reflective inner wall is a part of the side surface of the cone, so that light rays emitted by the light source body received by the second reflective inner wall are all reflected to the front lower part.

Furthermore, the bus is a curved section, the curved section is concave towards the axis direction of the first reflective inner wall, and the curved section is positioned above the end point connecting line of the bowl opening end at the focus and the bus, so that the second reflective inner wall receives light rays emitted by the light source body, part of the light rays are reflected to the front lower part, and the rest of the light rays are reflected to the front upper part and the front.

Furthermore, the first reflective inner wall is provided with a light reduction part, the shading sheet is superposed with the light reduction part under the irradiation of light rays parallel to the axis of the first reflective inner wall, and the light reduction part is a matt surface or a hole.

Further, still include the baffle, the baffle sets up in the one side that the light source body deviates from the bowl mouth end, and the baffle sets up in the top of the horizontal plane at light source body minimum place, and the baffle is the matt surface towards the one side of the light source body, and the shading of anti-dazzling screen under the light irradiation parallel with the axis of first reflection of light inner wall at the shading coincidence of first reflection of light inner wall with the baffle under the irradiation of the light source body.

Further, the bottom of the light source body is flush with the bottom of the light shielding sheet.

Further, the bottom of the light shielding sheet is positioned below the bottom of the light source body.

An automotive vehicle comprising the above headlamp apparatus for vehicles.

According to the headlamp device for the vehicle and the motor vehicle, the shape of the first reflecting inner wall of the reflecting bowl and the set position of the light source body reflect most of light rays emitted by the light source body into parallel light, and glare caused by reflection is eliminated; the shading sheet shields partial light rays of the light source body directly emitted from the upper part of the port of the light reflecting bowl, glare caused by direct radiation is eliminated, the eyes of a driver on the head are prevented from being damaged, and the damage to the eyes of a driver in a forward vehicle in the same direction is greatly reduced; meanwhile, the condition of illegally using the high beam lamp does not exist under the device, so that the possibility of driving accidents caused by glare is eliminated, and the problem that the vision of a driver is damaged and further traffic accidents are possible to happen due to the glare generated by the high beam lamp is solved; in addition, the second reflecting inner wall converts part of light rays which are originally reflected into parallel light by the first reflecting inner wall into non-parallel light rays which are reflected towards the front lower part or the front upper part, so that the near light intensity of the device is enhanced, the near light function of the device is improved, scenes such as signboards and the like at the front upper part of the vehicle are also illuminated, and the device is further improved for a non-glare high beam and is suitable for popularization and application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural view of a vehicular headlamp apparatus according to embodiment 1 of the present application;

fig. 2 is a schematic structural view of a vehicular headlamp apparatus according to embodiment 1 of the present application;

fig. 3 is a schematic structural view of a vehicular headlamp unit according to embodiment 2 of the present application;

fig. 4 is a schematic structural view of a vehicular headlamp unit according to embodiment 3 of the present application;

fig. 5 is a schematic structural view of a vehicular headlamp unit according to embodiment 4 of the present application;

fig. 6 is a schematic structural view of a vehicular headlamp unit according to embodiment 5 of the present application;

fig. 7 is a schematic structural view of a vehicular headlamp unit according to embodiment 6 of the present application;

fig. 8 is a schematic structural view of a vehicular headlamp unit according to embodiment 7 of the present application;

fig. 9 is a schematic structural view of a vehicular headlamp unit according to embodiment 8 of the present application;

fig. 10 is a schematic structural view of a vehicular headlamp unit according to embodiment 9 of the present application;

fig. 11 is a schematic structural view of a vehicular headlamp apparatus according to embodiment 10 of the present application.

Icon: 10-a vehicle headlight unit; 100-a light reflecting bowl; 120-a first reflective inner wall; 130-a second reflective inner wall a; 140-a chamber; 160-second reflective inner wall B; 170-dimming part; 180-a baffle; 200-shading sheet; 300-light source body.

Detailed Description

Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "high", "low", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the driver's view of the vehicle light of the technology of the present application installed in the vehicle in the driving position, and also based on the orientation or positional relationship shown in the drawings, and are only for convenience of describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, and a specific orientation configuration and operation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

For convenience of description, in the present application, the second light reflecting inner wall located above the horizontal plane where the focus is located is used as the second light reflecting inner wall a, and the second light reflecting inner wall located below the horizontal plane where the focus is located is used as the second light reflecting inner wall B.

Example 1

As shown in fig. 1 and 2, a headlamp unit 10 for a vehicle according to an embodiment of the present application includes a louver 200, a light source body 300, and a reflector 100.

The reflector 100 has a first reflective inner wall 120 and a second reflective inner wall connected to each other and defining a chamber 140.

The first reflective inner wall 120 has a parabolic shape.

The light source body 300 is disposed in the cavity 140 and disposed at a focus of the first reflective inner wall 120.

The light emitting direction is defined as the front, the second reflective inner wall is located above the horizontal plane where the focus is located, and serves as the second reflective inner wall a130, the second reflective inner wall a130 receives the light emitted by the light source body 300 and totally or partially reflects the light to the front lower side, and/or the second reflective inner wall is located below the horizontal plane where the focus is located, and serves as the second reflective inner wall B160, and the second reflective inner wall B160 receives the light emitted by the light source body 300 and totally or partially reflects the light to the front upper side.

The shape of the second reflective inner wall is a curved surface, a folded surface or a flat surface, and when the second reflective inner wall is located above the horizontal plane where the focus is located, the curved surface does not include a part of the elliptical spherical surface, that is, the shape of the second reflective inner wall a130 does not include a part of the elliptical spherical surface.

In this embodiment, the second reflective inner wall is a second reflective inner wall a130 disposed above the horizontal plane where the focus is located.

One end of the second reflective inner wall a130 is located in the cavity 140, for example, located on one side of the light source body 300 departing from or facing the bowl opening end, or flush with the light source body 300, and the other end of the second reflective inner wall a130 extends toward the direction of the bowl opening end, where the extension includes three situations of extending out of the bowl opening end, flush with the bowl opening end, or less than the bowl opening end.

In this embodiment, one end of the second reflective inner wall a130 is located between the light shielding sheet 200 and the light source body 300, and the other end is flush with the bowl mouth end, and the second reflective inner wall a130 gradually shrinks toward the side away from the bowl mouth end, and the end of the second reflective inner wall a130 away from the bowl mouth end is lower than the end of the second reflective inner wall a130 located at the bowl mouth end, so that the light emitted by the light source body 300 received by the second reflective inner wall a130 is partially or totally reflected towards the front lower side.

In this embodiment, the second reflective inner wall a130 is a curved surface, specifically, the second reflective inner wall a130 is a curved surface formed by rotating the generatrix by a certain angle, for example, 40 ± 10 °, from the first preset position to the left and right respectively, with the axis of the first reflective inner wall 120 as a rotation axis, and a parallel projection of the generatrix located at the first preset position on a horizontal plane where the focus is located coincides with the axis of the first reflective inner wall 120.

The light-shielding sheet 200 is located in the cavity 140, the light-shielding sheet 200 is disposed above a horizontal plane where the lowest point of the light source body 300 is located, and the light-shielding sheet 200 is located between the bowl-opening end and the light source body 300, specifically, the light-shielding sheet 200 is located at the center of the bowl-opening end and the focus, in other words, a horizontal distance between the light-shielding sheet 200 and the focus is L4, a horizontal distance between the bowl-opening end and the focus is L2, and L4 is 0.5 times of L2.

The side of the light-shielding sheet 200 facing the light source body 300 is a matte side.

According to the vehicular headlamp apparatus 10 of the embodiment of the present application, while enhancing the low-beam effect, the generation of glare (the glare here mainly refers to the glare formed by the second light-reflecting inner wall a130 reflecting light to the lower portion of the first light-reflecting inner wall 120 and further reflecting the light) is prevented.

In this embodiment, the second reflective inner wall a130 is a curved surface, specifically, the generatrix is a straight line segment, and the second reflective inner wall a130 is a part of a conical side surface, so that the light emitted by the light source body 300 received by the second reflective inner wall a130 is totally reflected to the front lower side.

Meanwhile, taking the range of the low beam requirement as 40 meters as an example, taking the connection line between one point a of the ground (plane) 40 meters right in front of the car light and the highest point B of the second reflective inner wall a130 (a.b is located on the same vertical plane of the horizontal plane) as a connection line a, taking the connection line between the highest point B of the second reflective inner wall a130 and the lowest point C of the light source body 300 (c.b is located on the same vertical plane of the horizontal plane) as a connection line B, wherein the included angle between the connection line a and the connection line B has a bisector C, and the acute angle formed by the line perpendicular to the bisector C and the horizontal plane is 2 times of the acute angle formed by the line perpendicular to the bisector C, so that the cone angle of the cone where the second reflective inner wall a130 is located is taken as the cone angle.

It should be noted that the second reflective inner wall a130 located at the upper part of the reflective bowl 100 is intended to enhance the low beam illuminating the road surface, and the central angle is preferably 80 ± 20 degrees, so that it is unnecessary to waste the light when the central angle is too large to illuminate the area other than 1 meter in front of the vehicle. The distance of the car lamp from the ground is an important value basis, the position of the car lamp is high, and the central angle can be correspondingly reduced.

The end of the second reflective inner wall a130 far from the bowl mouth end extends to the side close to the light source body 300 until the light reflected by the end point far from the bowl mouth end is shielded by the light shielding sheet 200, and the high beam function is not affected.

In order to ensure that the light emitted from the light source 300 received by the second reflective inner wall a130 is fully reflected to the front lower side and the effect of extending out of the bowl end is optimized, please refer to fig. 1, along the axial direction of the first reflective inner wall 120, the horizontal distance between the two ends of the second reflective inner wall a130 is L5, and L5 is 0.6 times of L2. According to this data, the light reflected by the second reflective inner wall a130 is not blocked by the light-shielding sheet 200 at all.

Under the condition that the second reflective inner wall a130 is located at the top center of the reflective bowl 100 and the bisector of the central angle of the second reflective inner wall a130 is perpendicular to the horizontal plane, the second reflective inner wall a130 may be deflected 5 ° leftward or rightward around the axis of the first reflective inner wall 120 according to actual needs, for example, the second reflective inner wall a130 of the left lamp is displaced 5 ° leftward, and the second reflective inner wall a130 of the right lamp is displaced 5 ° rightward; or, only the left end of the second light reflecting inner wall a130 of the left lamp extends leftwards by 5 degrees, and the right end of the second light reflecting inner wall a130 of the right lamp extends rightwards by 5 degrees; thereby enhancing the brightness of the ground between the two front wheels in front of the vehicle.

It should be noted that the angle of deflection cannot be too large to prevent wasted light and even glare.

The shape of the light-shielding sheet 200 may be planar, curved, or folded.

Referring to fig. 2, the projection shape of the light-shielding sheet 200 is a fan-like shape having a fan-shaped notch at the top and a three-fold line section at the bottom, wherein the fan-shaped notch is located at the center of the top of the light-shielding sheet 200, the middle section of the three-fold line is a horizontal line, and the two sections at the two sides have the same included angle with the horizontal line and are inclined upward. This is to make the same effect on the same-direction front-view mirror when a left-hand vehicle overtakes or a right-hand vehicle overtakes. Of course, the three-fold line can be changed into a curved line section or the connection of the curved line section and the straight line section according to the actual requirement.

The bottom horizontal line of the projected shape of the light-shielding sheet 200 is flush with the bottom of the light source body 300 or below the bottom of the light source body 300.

The central angle of the sector ring is proper at 50 +/-20 degrees, and glare can be generated to drivers of oncoming vans, buses and the like when the central angle is too large; the distance from the car lamp to the ground is an important value basis, and if the car lamp is high in position, the central angle can be correspondingly enlarged.

The top edge of the light shielding sheet 200 (not including the sector-shaped notch) is located on the curved surface formed by the connecting line between the light source body 300 and the top contour curve of the bowl-mouth end of the light reflecting bowl 100. When the points on the contour curve of the top of the port of the light reflecting bowl 100 from left to right are connected with the light source body 300, if the light source body 300 is "1", the points are connected with the uppermost point of "1"; if the light source body 300 is in a shape of "one", connecting lines with points of the "one" from left to right; if the light source body 300 is linear and parallel to the center line of the light reflecting bowl 100, connecting the point closest to the bowl bottom; if the light source body 300 is "O" shaped, it is connected to points of the upper edge from left to right of "O"; if the light source body 300 is Led lamp of other shapes or various types, and so on, the purpose is to block the direct light from the light source body 300 to the upper left and upper right. At this time, the light emitted from the fan-shaped notch is not glare.

It can be understood that the closer the light-shielding sheet 200 is to the light source body 300, the smaller the area of the light-shielding sheet 200.

Example 2

Referring to fig. 3, in the headlamp unit 10 for a vehicle of the present embodiment, unlike embodiment 1, the generatrix of the second reflective inner wall a130 is a curved line segment, the curved line segment is concave toward the axis near the first reflective inner wall 120, and the curved line segment is located above the connection line of the focal point and the generatrix located at the end point of the bowl end (the connection line is shown by a dotted line), so that the light emitted by the light source body 300 received by the second reflective inner wall a130 is partially reflected to the front lower side, and the rest of the light is reflected to the front upper side and the front side.

It is understood that the light reflected from the second reflective inner wall a130 (illustrated by a curved section) is not glare because the central angle of the second reflective inner wall a130 is limited to 60 ± 20 °, either downward or upward. At the junction of the two sections, there is also fine horizontal light exiting, except that the light reflected by the highest bus of the second reflective inner wall a130 is directed forward, and the light reflected by the other buses is deflected to the left or right. If the height of the vehicle lamp is 0.7m, the reflected light of the second reflecting inner wall A130 is only in the range of 2m width of the ground in front of the lamp, so that the low beam is not wasted, and the two lamps are matched to meet the requirement of the low beam.

It can be understood that, in this embodiment, if a part of the curve segment is recessed below the connection line between the end point of the bus bar at the bowl opening end and the focus, the light emitted from the light source 300 cannot be received by the segment of the curve near the bowl opening end, which is equivalent to shortening the length of the curve. There are countless shapes of the curved segments, for example, the curved segments include circumferential curved segments, hyperbolic segments, and the like.

In this embodiment, the curved line segment as the generatrix of the second reflective inner wall a130 is a part of a circumferential line, the center of the circle where the circumferential line segment is located right above the outside of the cavity 140 of the reflective bowl 100, and the parallel projection of the circumferential line segment located at the first preset position on the horizontal plane where the focus is located coincides with the axis of the first reflective inner wall 120; furthermore, the radius of a point of the circumferential line segment at the bowl opening end is perpendicular to the connecting line of the point and the focus, so as to determine the inclination of the chord of the circumferential line segment; then the light source 300 emits light to it, each light receiving point on the circumference line segment has a tangent line of the circumference line segment, the included angle between the incident light and the tangent line is the same as the included angle between the emergent light and the tangent line, it can be known that the light reflected by a section of the curved surface close to the bottom of the bowl is forward downward, and the light reflected by a section close to the mouth of the bowl is forward upward.

It should be noted that in other embodiments of the present application, the bus bar may be connected to the straight line segment and the curved line segment, which is not described herein.

Example 3

As shown in fig. 4, in the headlamp unit 10 for a vehicle of the present embodiment, the second light reflecting inner wall a130 is in a fold shape, unlike embodiment 1. The second reflecting inner wall a130 is formed by connecting a plurality of trapezoids with the same height by inclined edges, and a longer parallel line is positioned at the bowl opening end, wherein the height refers to the distance between two parallel edges of the trapezoids.

It can be understood that the polygonal second reflecting inner wall a130 is formed by connecting a plurality of rectangles with different heights by longer sides, and the shorter side is located at the bowl end, where the height refers to the length of the longer side of the rectangle, and the rectangle located in the center of the second reflecting inner wall a130 is the highest and gradually shortens located at both sides.

In other words, the cross section of the second reflective inner wall a130 in the folded shape is actually an inscribed polygon or a circumscribed polygon of the cross section arc of the second reflective inner wall a130 in embodiment 1, wherein in order to satisfy the requirement that the light rays emitted by the light source 300 received by the second reflective inner wall a130 are all reflected to the front lower side and extend out of the bowl port end, the overall length, width and inclination of the second reflective inner wall a130 in the folded shape are all dependent on the configuration of the second reflective inner wall a130 in embodiment 1, and in the actual use process, specific limitations are required to be performed in combination with embodiment 1, which is not described in detail herein.

Example 4

As shown in fig. 5, in the headlamp unit 10 for a vehicle of the present embodiment, the second light reflecting inner wall a130 is formed in a planar shape that is obliquely arranged, unlike embodiment 1.

The second reflective inner wall a130 is trapezoidal, and it should be noted that parameters such as the length, the width, and the inclination of the second reflective inner wall a130 are all required to be attached to the configuration of the second reflective inner wall a130 of a part of the conical side surface provided in embodiment 1.

Example 5

Referring to fig. 6, the difference from embodiment 1 is that the light reflecting bowl 100 only includes a first light reflecting inner wall 120 and a second light reflecting inner wall B160 connected to each other; the second reflective inner wall B160 is located below the horizontal plane where the focus is located, and located at one side of the bowl opening end of the light reflecting bowl 100, and the second reflective inner wall B160 receives the light emitted by the light source body 300, and partially or totally reflects the light to the front upper side.

The second reflective inner wall B160 reflects all the light emitted from the light source 300 to the front upper side, so that the partially reflected light directly illuminates the sign or the like on the front upper side of the vehicle, and the generation of glare (the glare here mainly refers to the glare formed by the second reflective inner wall B160 reflecting the light to the upper part of the first reflective inner wall 120 and further reflecting the light) can be effectively avoided.

The second reflective inner wall B160 may be a curved surface, a folded surface or a flat surface.

When the second reflective inner wall B160 is a curved surface, the second reflective inner wall B160 in this shape is a curved surface formed by rotating the generatrix by a certain angle, for example, 30 ± 10 °, from the second predetermined position to the left and right, with the axis of the first reflective inner wall 120 as the rotation axis, wherein the parallel projection of the generatrix at the second predetermined position on the horizontal plane where the focus is located coincides with the axis of the first reflective inner wall 120.

In this embodiment, the second reflective inner wall B160 is a part of a cylinder side surface formed by taking a straight line segment parallel to the axis of the first reflective inner wall 120 as a generatrix, taking the axis of the first reflective inner wall 120 as a rotation axis, and rotating from a second predetermined position to the left and right by a certain angle, for example, 30 ± 10 °.

In other words, the second reflective inner wall B160 is located below the axis of the first reflective inner wall 120, so that the reflected light is collected at the front upper part of the car light, the effect of extending out of the bowl end is optimized, and the sign board above the front of the car is effectively illuminated.

The second predetermined position is the bottom end of the bowl end, and it goes without saying that the second reflective inner wall B160 is located at the center of the lower portion of the reflective bowl 100.

Along the axial direction of the first reflective inner wall 120, the horizontal distance between the top end point of the second reflective inner wall B160 near the focus and the focus is set to be L3, along the axial direction of the first reflective inner wall 120, the horizontal distance between the bowl mouth end and the light source body 300 is set to be L2, and L3 is 0.5 times of L2.

By such a limitation, the structure itself is combined, so that the effect of the second reflective inner wall B160 reflecting all the light emitted from the light source 300 to the front upper side and extending out of the bowl mouth end is optimized, and the light cannot be reflected to the second reflective inner wall a130 to be reflected again to generate glare.

The central angle of the second reflective inner wall B160 is proper to be 50 +/-20 degrees, and glare can be generated to drivers of head-on large trucks, buses and the like when the central angle is too large. Of course, the height of the vehicle lamp from the ground is also referred to, and if the height is higher, the central angle can be increased.

The second reflective inner wall B160 can extend out of the end surface of the bowl opening end and can be flush with the bowl opening end; the second reflective inner wall B160 near one end of the light source 300 can also be lifted upwards to form an included angle of 6 +/-5 degrees between the bus and the horizontal plane. In this embodiment, the second reflective inner wall B160 is flush with the end surface of the bowl end, and the end of the second reflective inner wall B160 close to the light source 300 is not raised.

Example 6

Referring to fig. 7, in the headlamp apparatus 10 for a vehicle of the present embodiment, in addition to embodiment 5, the reflector 100 further has a second reflective inner wall a 130; wherein the arrangement of the second light reflecting inner wall a130 is the same as that in embodiment 1.

Example 7

Referring to fig. 8, in the headlamp device 10 for a vehicle of the present embodiment, different from embodiment 6, the second reflective inner wall B160 is a curved surface gradually shrinking toward a side away from the bowl end, and an end away from the bowl end is higher than the bowl end, so that the light emitted from the light source 300 received by the second reflective inner wall B160 is partially or completely reflected to the front upper side and completely extends out of the bowl end.

Specifically, the second light-reflecting inner wall B160 is formed by rotating the duplicated second light-reflecting inner wall a130 by 180 ° around the axis of the first light-reflecting inner wall 120 and contracting the central angle of the duplicated and transferred second light-reflecting inner wall a130 by 10 ° from each of the two sides to the center on the premise of keeping the second light-reflecting inner wall a130 provided in embodiment 1 or embodiment 2 unchanged, so that the light rays emitted by the light source body 300 received by the second light-reflecting inner wall B160 (whose generatrix is a straight line segment) are all reflected to the upper front and extend out of the bowl end, or the light rays emitted by the light source body 300 received by the second light-reflecting inner wall B160 (whose generatrix is a curved line segment) are partially reflected to the upper front and extend out of the bowl end, and the rest of the light rays are reflected to the lower front and the front and extend out of the bowl end.

It is understood that, in the headlamp unit 10 for a vehicle of the present embodiment, the curved second light reflecting inner wall B160, which is located below the level of the focal point, includes a portion of an ellipsoidal surface.

The second reflective inner wall A130 (the bus is a straight line segment) is at a height of 0.7-1 m from the ground, so that a road with the front distance of 1-40 m is illuminated, and in the embodiment, a signboard 10-60 m in front of the vehicle and 5-6 m above the vehicle is illuminated. The target to be illuminated is changed, and in order to avoid wasting light, the taper angle or inclination of the second reflective inner wall B160 (whose generatrix is a straight line segment) located below the axis of the first reflective inner wall 120 should be changed.

For example, for the second reflective inner wall B160 with a straight line segment as a generatrix, a connecting line between a point D on the upper part of the signboard at a position 50 m in front of the car light and a height of 5m and a point E (D, E are located on the same vertical plane of the horizontal plane) on the lowest end of the bowl end of the second reflective inner wall B160 is taken as a connecting line D, a connecting line between the point E on the lowest end of the bowl end of the second reflective inner wall B160 and a point c (c.e is located on the same vertical plane of the horizontal plane) on the lowest end of the light source body 300 is taken as a connecting line E, an included angle between the connecting line D and the connecting line E has a bisector F, and an acute angle formed by a line perpendicular to the bisector F and the horizontal plane is 2 times of an acute angle formed by the second reflective inner.

The second reflective inner wall B160 having the curved line segment as the generatrix can be used without any change except that the central angle is narrowed as in the case of the second reflective inner wall B160 having the straight line segment as the generatrix.

Example 8

Referring to fig. 9, in the vehicular headlamp apparatus 10 of the present embodiment, based on embodiment 1, the first reflective inner wall 120 is provided with the light-reducing portion 170, the light-shielding sheet 200 overlaps the light-reducing portion 170 with the shadow of the first reflective inner wall 120 under the irradiation of the light parallel to the axis of the first reflective inner wall 120, and the light-reducing portion 170 is a matt surface or a hole.

Since the sub-surface of the light shielding sheet 200 receives two kinds of light, namely, the light directly emitted from the light source body 300 and the light reflected by the first reflective inner wall 120 and parallel to the axis of the paraboloid, the amount of light of the light reflecting inner wall is about 2 times that of the light reflecting inner wall, and under such strong light, the sub-surface may indirectly generate glare. With the above arrangement, the sub-surface of the light-shielding sheet 200 is not irradiated with parallel light, and the possibility of reflection glare is further reduced.

Example 9

Referring to fig. 10, in the headlamp device 10 for a vehicle of the present embodiment, based on embodiment 1, the headlamp device further includes a baffle 180, the baffle 180 is disposed on a side of the light source 300 away from the bowl-mouth end, the baffle 180 is disposed above a horizontal plane where a lowest point of the light source 300 is located, a surface of the baffle 180 facing the light source 300 is a matt surface, and a shadow of the light shielding sheet 200 under irradiation of light parallel to an axis of the first reflective inner wall 120 on the first reflective inner wall 120 coincides with a shadow of the baffle 180 under irradiation of the light source 300 on the first reflective inner wall 120.

It should be noted that the baffle 180 may be an arc plate, a folded plate or a flat plate.

Example 10

Referring to fig. 11, in the vehicle headlamp apparatus 10 of the present embodiment, in addition to embodiment 1, the bottom of the light shielding sheet 200 is located below the bottom of the light source body 300. In other words, when the vehicle lamp is higher than the rear view mirror of a general car, the light-shielding sheet 200 has an extension deformation, the horizontal line at the center of the triple fold line at the bottom of the fan-like light-shielding sheet 200 extends downward, and the two oblique lines which are originally inclined upward incline downward.

Referring to fig. 2 and 11, when the vehicle lamp is lower than the eyes of the driver and the rearview mirror, the two straight lines beside the three folding lines at the bottom of the light shielding sheet 200 are inclined as shown in fig. 2, so as to shield less of the high beam. At present, the high beam lamp is not higher than the eyes of the driver, but is higher than the rearview mirror of the car, when the lamp is higher than the rearview mirror of the car, the light shading sheet 200 is deformed and extended as shown in fig. 10, and the oblique lines in fig. 10 cover the extended part.

Example 11

In an alternative aspect of the present embodiment, the present embodiment provides a motor vehicle including the vehicular headlamp apparatus according to any one of embodiments 1 to 10; the headlight device for the vehicle is arranged at the front part of the motor vehicle, eliminates glare, improves the safety of vehicle operation, and simultaneously has sufficient functions of high beam and low beam and the function of illuminating scenes such as an upper signboard and the like.

In conclusion, the light reflecting bowl provided by the application effectively improves the effect of the near light and enhances the brightness of the near light. The automobile headlamp device comprising the reflector can combine the high beam and the low beam by improving the low beam effect, so that the low beam device is cancelled, the secondary glare inherent to the low beam is eliminated fundamentally, the vehicle manufacturing cost is reduced, the distraction and labor of the driver for frequently opening and closing the high beam and the low beam are reduced, and the driving grade and efficiency are improved.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A headlight device for a vehicle, comprising a light reflecting bowl, a light source body and a light shielding sheet;

the light reflecting bowl comprises a first light reflecting inner wall and a second light reflecting inner wall which are connected with each other;

the first reflecting inner wall is in a parabolic shape;

the light source body is positioned at the focus of the first reflective inner wall;

defining the light emitting direction as the front, wherein the second light reflecting inner wall is positioned above the horizontal plane where the focus is positioned, receives the light emitted by the light source body and reflects the light to the front lower part wholly or partially, and/or the second light reflecting inner wall is positioned below the horizontal plane where the focus is positioned, receives the light emitted by the light source body and reflects the light to the front upper part wholly or partially;

the shape of the second reflecting inner wall is a curved surface, a folded surface or a plane, and when the second reflecting inner wall is positioned above the horizontal plane where the focus is positioned, the curved surface does not comprise a part of an elliptic spherical surface;

2. A headlamp unit for a vehicle as claimed in claim 1, wherein said second reflective inner wall is located above a horizontal plane on which said focus is located, said second reflective inner wall gradually tapers toward a side away from said bowl mouth end, and an end of said second reflective inner wall remote from said bowl mouth end is lower than an end of said second reflective inner wall located at said bowl mouth end, so that light emitted from said light source body received by said second reflective inner wall is partially or totally reflected downward.

3. A headlamp unit for a vehicle as claimed in claim 2, wherein said second reflecting inner wall is a curved surface formed by rotating a generatrix around the axis of said first reflecting inner wall by a predetermined angle from a first predetermined position to the left and right, and the parallel projection of said generatrix at said first predetermined position on the horizontal plane of said focal point coincides with the axis of said first reflecting inner wall.

4. A vehicle headlamp unit as defined in claim 3,

the bus is a straight line segment, and the second reflecting inner wall is a part of a conical side surface, so that light rays emitted by the light source body and received by the second reflecting inner wall are all reflected to the front lower part.

5. A headlamp unit for a vehicle as defined in claim 3, wherein said bus bar is a curved section recessed toward said axis of said first reflective inner wall, and located above a connection line of a focal point and said bus bar with an end point of said bowl end, so that said second reflective inner wall receives light from said light source and partially reflects the light to a lower front side and the remaining light reflects the light to an upper front side and a front side.

6. A vehicle headlamp unit as defined in claim 1, wherein said first reflecting inner wall is provided with a light-reducing portion, and said shade sheet is arranged such that a shadow of said first reflecting inner wall coincides with said light-reducing portion under irradiation of light rays parallel to an axis of said first reflecting inner wall, and said light-reducing portion is a matt surface or a hole.

7. A headlamp unit for a vehicle as defined in claim 1, further comprising a baffle disposed on a side of said light source body away from said bowl opening end, said baffle being disposed above a horizontal plane on which a lowest point of said light source body is located, a surface of said baffle facing said light source body being a matt surface, wherein said shade is exposed to light parallel to an axis of said first reflective inner wall, and said shade is overlapped with a shade of said baffle exposed to light of said light source body on said first reflective inner wall.

8. The headlamp unit for a vehicle according to claim 1, wherein a bottom of the light source body is flush with a bottom of the louver.

9. The headlamp unit for a vehicle according to claim 1, wherein a bottom portion of the shade is located below a bottom portion of the light source body.

10. A motor vehicle, characterized by comprising the headlamp unit for a vehicle as claimed in any one of claims 1 to 9.