CN112902102A

CN112902102A - Automobile lamp

Info

Publication number: CN112902102A
Application number: CN202110112397.3A
Authority: CN
Inventors: 万余星; 陈瑜
Original assignee: Dongfeng Motor Co Ltd
Current assignee: Dongfeng Motor Co Ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-06-04
Anticipated expiration: 2041-01-27
Also published as: CN112902102B

Abstract

The application discloses an automobile lamp, which comprises a light source, a light guide and a thick-wall part, wherein the light source is arranged at the end part of the light guide, the light guide is arranged behind the thick-wall part, and light rays emitted by the light source are transmitted to the back of the thick-wall part after being conducted by the light guide; the front surface of the thick-wall part is provided with a plurality of parallel light emitting planes, the back surface of the thick-wall part is provided with at least one light incident plane, the light incident plane and the light emitting plane are parallel to each other, and light rays are emitted from the light emitting planes after being incident into the thick-wall part from the light incident plane. The light brightness of different axial parts of the light guide is uniform, light rays irradiate to the thick-wall part from the light incident plane and uniformly irradiate to the thick-wall part from multiple angles in a surface light source mode, and no local dark area appears; the light emitted by the light guide has components in the vertical and horizontal directions, and the light emitting plane and the light incident plane are parallel, so that the emergent light and the incident light are kept in a divergent state, the requirements of regulations are met, the luminous granular sensation of the light emitting surface caused by the arrangement of the arc light emitting surface is avoided, and the automobile lamp emits light uniformly.

Description

Automobile lamp

Technical Field

The application relates to the technical field of automobiles, in particular to an automobile lamp.

Background

The automobile lamp is the main part of an automobile, part of the automobile lamp irradiates a light source on the thick-walled part through the arrangement of the thick-walled part, and light is emitted after being refracted by the thick-walled part to form the light-emitting effect of the thick-walled part.

The light distribution scheme of the existing thick-wall part is that light rays emitted by an LED lamp are collimated into parallel light through a condenser, and then the light rays are emitted from the front surface of the thick-wall part through a body of the thick-wall part. The positive cooperation molding face of thick wall spare is provided with the grading decorative pattern, and the grading decorative pattern includes a plurality of flower grain faces, and the surface of every flower grain face all is the arc, and the curved setting makes light can disperse towards all directions.

In the light distribution mode, each LED emits light in a point shape, light spots with bright centers and dark edges are formed on the pattern surface when the LEDs irradiate, a local dark area exists on the front surface of the thick-walled part when the thick-walled part emits light, as shown in fig. 21, the light intensity of a C-C line on the thick-walled part 001 is shown in a coordinate of fig. 22, the light of each LED forms one light spot, and two light spots are shown in the C-C line area.

Moreover, as shown in fig. 23, the length of the lines on the patterned surface 002 represents the intensity of the light, so as to show the light emitting effect on the patterned surface 002, because the arc-shaped patterned surface 002 is arranged, the light enters different areas of the patterned surface 002, the direction of the refracted emergent light is different, the light can be dispersed towards all directions, when viewed from the front (the X direction shown in the figure), only the emergent light emitted from the central area of the arc-shaped patterned surface 002 can be observed, the emergent light from the edge area of the arc-shaped patterned surface 002 cannot be observed, the light emitting brightness on each patterned surface 002 tends to be weakened from the center to the edge, the dark area between two adjacent patterned surfaces 002 is more obvious, so that the front of the thick wall part appears granular when the car lamp emits light, the car lamp emits light unevenly, and the light emitting quality is poorer.

Disclosure of Invention

The utility model provides an aim at overcomes prior art car light and presents local dark space and graininess not enough when luminous, provides the car light of luminous effect preferred.

The technical scheme of the application provides an automobile lamp, which comprises a light source, a light guide and a thick-wall part, wherein the light source is arranged at the end part of the light guide, the light guide is arranged behind the thick-wall part, and light rays emitted by the light source are transmitted to the back surface of the thick-wall part after being conducted by the light guide;

the front of thick wall spare is provided with a plurality of light-emitting planes that are parallel to each other, the back of thick wall spare is provided with at least one income light plane, go into the light plane with the light-emitting plane is parallel to each other, and light follows after launching into the thick wall spare from the light-emitting plane jets out.

Furthermore, the front surface of the thick-wall part is also provided with a plurality of connecting step surfaces, and two adjacent light emitting planes are connected through one connecting step surface.

Further, the normal direction of the connecting step surface is perpendicular to the front-rear direction of the thick-walled member.

Further, an included angle between the connecting step surface and the light emergent plane is greater than or equal to 90 degrees.

Furthermore, the back of the thick-wall part is provided with a plurality of parallel light incidence planes, and the light incidence planes are arranged at intervals along the left and right directions of the thick-wall part.

Furthermore, two adjacent light incidence planes are connected through a connecting surface, and the normal direction of the connecting surface is perpendicular to the front and back direction of the thick-wall part.

Further, the light guide comprises a first light guide, the thick-wall part comprises a first thick-wall part, and the outer surface of the first light guide is provided with a light distribution tooth, a light emergent cambered surface and two light gathering guide surfaces;

the light distribution teeth and the light-emitting cambered surface are arranged oppositely, the light distribution teeth and the light-emitting cambered surface are connected through two light-gathering guide surfaces, and the light-emitting cambered surface faces to the back surface of the first thick-wall part.

Furthermore, the light guide further comprises a second light guide, the thick-walled part comprises a second thick-walled part, an auxiliary light distribution tooth is arranged on the outer surface of the second light guide, the auxiliary light distribution tooth is arranged along the length direction of the second light guide, and part of light of the light source is reflected by the auxiliary light distribution tooth and then enters the second thick-walled part and then is emitted from the upper surface of the second thick-walled part.

Furthermore, the auxiliary light distribution teeth are positioned on the upper surface of the second light guide, part of light rays of the light source are reflected by the auxiliary light distribution teeth and then emitted to the lower surface of the second thick-wall part, and the light rays are reflected by the lower surface of the second thick-wall part and then emitted from the upper surface of the second thick-wall part.

After adopting above-mentioned technical scheme, have following beneficial effect:

in the application, light of a light source is transmitted to the thick-wall part after being transmitted by the light guide, the light guide converts point light of the LED into light of a light guide surface, namely the light is uniformly diffused to the periphery from the axis of the light guide, the brightness of different positions in the axial direction of the light guide is uniform, the diffused light is emitted into the thick-wall part from the light incident plane and is transmitted to the thick-wall part from multiple angles in a surface light source mode, and therefore a local dark space caused by a point light source in the prior art cannot be generated;

because the light that the light guide sent is the divergent light that launches from the axis of light guide, the light source itself has the weight of upper and lower left and right sides direction, the light of incidenting into the plane of light is for the light after breaing up, and the light-emitting plane keeps parallel with the income light plane, incident light is after the twice refraction of thick wall spare, can follow the light-emitting plane of thick wall spare with the direction parallel of incidence and jet out, consequently, the light that jets out from the light-emitting plane also keeps the state of divergence, emergent light satisfies the regulation requirement, need not set up the light-emitting plane to the arc, thereby avoid setting up the arc and going out the plain noodles and lead to the luminous grain sense of every light-emitting plane, make the car light present the effect of evenly giving.

Drawings

The disclosure of the present application will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present application. In the figure:

FIG. 1 is a front view of an automotive lamp according to an embodiment of the present application;

FIG. 2 is an exploded view of an automotive lamp according to an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a schematic front view of a thick-walled part according to an embodiment of the present application;

FIG. 6 is a schematic rear view of a thick-walled member according to an embodiment of the present application;

FIG. 7 is a schematic top view of a thick walled member according to an embodiment of the present application;

FIG. 8 is an enlarged partial view of FIG. 5;

FIG. 9 is an oblique view of a thick-walled member according to an embodiment of the present application;

FIG. 10 is a schematic diagram of the light emitting surface of the thick-walled member according to an embodiment of the present application;

FIG. 11 is a schematic view of the light exit plane and the connecting step plane at a right angle;

FIG. 12 is a schematic diagram of the position relationship between the light-emitting plane and the connecting step surface in an embodiment of the present application;

FIG. 13 is a schematic view of a portion of the rear of a thick walled member according to an embodiment of the present application;

FIG. 14 is a cross-sectional view taken along line B-B of FIG. 5;

FIG. 15 is an enlarged partial view of FIG. 3;

FIG. 16 is a schematic view of the position of the light guide and the thick-walled member in an embodiment of the present application;

FIG. 17 is a schematic view of the light emitting surface contouring of the thick walled member as an arc surface in one embodiment of the present application;

FIG. 18 is a schematic illustration of the normal to the light emitting faceting surface of the thick wall member in an XYZ coordinate system in an embodiment of the present application;

FIG. 19 is a schematic illustration of the light exit plane normal to the thick-walled member in an XYZ coordinate system in an embodiment of the present application;

FIG. 20 is a schematic view of the light exit plane of the thick-walled member normal to the XYZ coordinate system in an embodiment of the present application;

FIG. 21 is a schematic front view of a prior art thick-walled part;

FIG. 22 is a graph showing the light intensity coordinates at the line C-C in FIG. 20;

FIG. 23 is a schematic representation of the glow on the tread surface of a prior art thick-walled member.

Detailed Description

Embodiments of the present application are further described below with reference to the accompanying drawings.

It is easily understood that according to the technical solutions of the present application, those skilled in the art can substitute various structures and implementations without changing the spirit of the present application. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present application, and should not be construed as limiting or restricting the technical solutions of the present application in their entirety.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Throughout the description of the present application, it is to be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "coupled" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The foregoing is to be understood as belonging to the specific meanings in the present application as appropriate to the person of ordinary skill in the art.

The vehicle lamp in the embodiment of the present application, as shown in fig. 1 to 3, includes a light source (not shown in the figure), a light guide 01 and a thick-walled member 02, the light source is installed at an end of the light guide 01, the light guide 01 is installed behind the thick-walled member 02, and light emitted from the light source is transmitted to the back of the thick-walled member 02 after being conducted by the light guide 01;

the front surface of the thick-wall part 02 is provided with a plurality of light emitting planes 21 which are parallel to each other, the back surface of the thick-wall part 02 is provided with at least one light incident plane 22, the light incident plane 22 and the light emitting plane 21 are parallel to each other, and light rays are emitted from the light emitting plane 21 after being emitted into the thick-wall part 02 from the light incident plane 22.

Specifically, as shown in fig. 1 and 2, the automotive lamp further includes a housing assembly 03, a light guide bracket 04, a bezel 05 and an outer cover 06, wherein the light guide bracket 04, the light guide 01, the light source and the thick-walled member 02 are all mounted in the housing assembly 03. The light guide 01 and the light source are installed on the light guide support 04, the thick-wall part 02 is located in front of the light guide 01 and installed in the decorative ring 05, and the outer lamp cover 06 covers in front of the thick-wall part 02.

As shown in fig. 1 and 2, the X direction is the front-rear direction of the thick-walled member, the longitudinal direction of the vehicle body, the Y direction is the left-right direction of the thick-walled member, the width direction of the vehicle body, and the Z direction is the up-down direction of the thick-walled member, and the height direction of the vehicle body. The definition of the above-mentioned direction continues to be used hereinafter.

The automotive lamp shown in fig. 1, 2 is provided with two thick-walled members, a first thick-walled member 02a, a second thick-walled member 02b, an upper second thick-walled member 02b as a position lamp, a daytime running lamp, and a turn lamp (hereinafter referred to as a hybrid lamp) of the automobile, a lower first thick-walled member 02a as a daytime running lamp of the automobile, the first thick-walled member 02a being provided with a first light guide 01a and a light source, and the second thick-walled member 02b being provided with a second light guide 01b and a light source.

Specifically, as shown in fig. 3, the second thick-walled material 02b as a hybrid lamp is provided with one light-emitting portion 26, and since the light-emitting portion 26 is thick (i.e., the height in the vertical direction), two second light guides 01b are provided to guide light so as to ensure the light-emission luminance of the second thick-walled material 02 b. A first thick-walled member 02a serving as a daytime running light is provided below, and four light-emitting portions 25 are provided at intervals in the vertical direction, and one first light guide 01a is provided for each light-emitting portion 25 to guide light.

As shown in fig. 3, the light guides 01 are disposed behind the corresponding thick-walled members 02, and light is emitted from the back surfaces of the thick-walled members 02 to the front surfaces. To ensure that the front side of the thick-walled part 02 emits light uniformly, all the light exit planes 21 are parallel to each other.

Moreover, the light incident plane 22 and the light exit plane 21 are parallel to each other, specifically, as shown in fig. 3, an extension line L1 of one of the light exit planes 21 is parallel to an extension line L2 of one of the light incident planes 22; similarly, an extension line L3 of one of the light exit planes 21 in fig. 14 is parallel to an extension line L4 of one of the light entrance planes 22.

Taking fig. 4 as an example, the light incident plane 22 of the second thick-walled member 02b is disposed parallel to the light emergent plane 21, so that the angle of the light incident on the thick-walled member 02a from the light incident plane 22 at any angle can be kept the same as the incident angle of the light after the light is refracted by the second thick-walled member 02b, i.e., the emitted light can be kept parallel to the incident light.

Alternatively, one or more light incident planes 22 may be provided, specifically, according to the shape of the thick-walled member 02.

The light source is generally an LED, and is mounted at an end of the light guide 01, and light emitted from the light source is first incident into the light guide 01, then emitted from a surface of the light guide 01 after being conducted by the light guide 01, and scattered in the vertical and horizontal directions so that the light can be emitted from the surface of the light guide 01 in all directions. The light scattered by the light guide 01 is emitted into the thick-walled member 02 from the light incident plane 22 of the thick-walled member 02, and since the light incident plane 22 and the light emitting plane 21 are parallel, the light emitted into the thick-walled member 02 can be emitted from the light emitting plane 21 in the same direction, so that the emergent light of the light emitting plane of the thick-walled member 02 keeps the same direction as the scattered incident light, and is scattered light in the vertical and horizontal directions, see a luminous effect diagram shown in fig. 10, wherein the line direction is the light direction, the length of the line refers to the light intensity, and the longer the line length, the stronger the light intensity.

Moreover, since the light-emitting plane 21 is a plane, an observer can observe the light-emitting plane 21 from any angle, and can see that the whole light-emitting plane 21 emits light, and a single light-emitting plane 21 emits light uniformly. Meanwhile, the whole light guide 01 emits light uniformly in the length direction, namely, the light intensity of the light which enters different positions in the length direction of the thick-wall part is uniform, and the whole light emitting surface formed by the light emitting plane 21 emits light uniformly. As shown in fig. 10, the direction of the lines on the light-emitting plane 21 refers to the direction of the light, the length of the lines refers to the intensity of the light, and longer length means stronger light intensity. As can be seen from the figure, the light emitted from the same light-emitting plane 21 in the same direction has the same intensity at different positions (center and edge) of the same light-emitting plane 21, so that the light emission of each light-emitting plane 21 is uniform from any angle, no edge dark area occurs, and the granular feeling of the light emission of the thick-walled member 02 is eliminated. Further, since the light intensity emitted in the same direction is the same for different light emitting planes 21, the light emitting planes 21 at different positions on the thick-walled member 02 emit light uniformly from any angle, and no local dark area occurs.

Fig. 4 to 14 all show the structure of the second thick-walled material 02b, and the structure of the thick-walled material 02 will be described below by taking the second thick-walled material 02b as an example: further, as shown in fig. 9, the front surface of the second thick-wall part 02b is further provided with a plurality of connecting step surfaces 23, and two adjacent light-emitting planes 21 are connected through one connecting step surface 23.

The front surface of the second thick-wall part 02b is a light emitting surface molding surface, which follows the shape of the light emitting surface molding surface, as shown in fig. 5, 8 and 9, the light emitting planes 21 are arranged in a grid shape, a plurality of light emitting planes 21 are arranged in a vertical and horizontal manner, and the grid shape can be a square, a rectangle or a parallelogram. Preferably, the area of each light exit plane 21 is the same.

As shown in fig. 17, the light emitting surface molding surface 28 of the second thick-wall member 02b is fitted to a smooth arc surface, which is an optimal shape of the light emitting surface molding surface 28 regardless of the light distribution requirement. The normal arrangement of the light exit plane 21 is dependent on the normal arrangement of the light-emitting surface-forming surface 28.

Specifically, as shown in FIG. 18, at the aforementioned XIn the YZ coordinate system, the included angle between the normal E of the light-emitting surface profile 28 and the X direction is alpha, and the component of the included angle alpha on the XOZ plane is alpha_XOZThe component of the angle α in the XOY plane is α_XOY. As shown in fig. 19, in the XYZ coordinate system, the angle between the normal F of the light-emitting plane 21 and the X direction is β, and the component of the angle β on the XOZ plane is β_XOZThe component of the angle β in the XOY plane is β_XOY。

Preferably, the component of the included angle β in the XOZ plane is β_XOZThe recommended angle is 0 degrees, so that the light emergent plane 21 can face the front of the vehicle, and the light distribution requirement of regulations can be favorably met; the component of the angle β in the XOY plane is β_XOYShould be smaller than and tend to have a component of the included angle alpha on the XOY plane as alpha on the premise of meeting the light distribution requirement of the regulation_XOYI.e. alpha_XOY-β_XOYShould be as small as possible so that the angle of the light exit plane 21 can approach the angle of the light emitting facet profile 28, fig. 20 shows a schematic view of the best normal angle of the light exit plane 21 of the second rear wall element 02b in the embodiment of the present application.

Further, since the light emitting surface molding surface of the second thick-wall part 02b is a curved surface, the light emitting planes 21 are parallel planes, the adjacent light emitting planes 21 are not on the same plane, and the two light emitting planes are connected through the connecting step surface 23, and the connecting step surface 23 plays a role in connecting the two adjacent light emitting planes 21. As shown in fig. 9, for the light exit planes 21 in a lattice shape, each light exit plane 21 is connected with four connection step faces 23 at most.

Preferably, the normal direction of the connection step surface 23 is perpendicular to the front-rear direction of the second thick-wall part 02b, i.e., the plane of the connection step surface 23 is parallel to the front-rear direction of the second thick-wall part 02 b.

Therefore, only the light emitting planes 21 can be observed when viewed from the front of the second thick-wall part 02b, and the connecting step surfaces 23 arranged in the front-back direction of the second thick-wall part 02b cannot be observed, specifically, referring to the front view of the second thick-wall part 02b shown in fig. 8, when the light source is turned on, each light emitting plane 21 uniformly emits light, and all the light emitting planes 21 are visually connected together to form a complete plane, so that the whole light emitting surface modeling surface of the second thick-wall part 02b uniformly emits light in the visual effect, and the granular sensation of light emission is completely eliminated.

Further, in the embodiment of the present application, an included angle between the connection step surface 23 and the light exit plane 21 is greater than or equal to 90 °, so as to reduce an area of the connection step surface 23, and thereby improve appearance quality of the second thick-wall member 02 b. For the connecting step surface 23a (see fig. 9) connecting the two light-emitting planes 21 adjacent up and down, the included angle between the connecting step surface 23a and the light-emitting plane 21 is 90 °, and for the connecting step surface 23b (see fig. 9) connecting the two light-emitting planes 21 adjacent left and right, the included angle between the connecting step surface 23b and the light-emitting plane 21 is an obtuse angle.

Specifically, fig. 11 is a schematic diagram illustrating a comparison of the angle α 2 between the light-emitting plane 21 and the connecting step surface 23 set as a right angle, wherein the maximum distance a2 between two adjacent light-emitting planes 21 in the front-back direction of the thick-wall member 02a is the same as the maximum distance a1 between two light-emitting planes 21 in the front-back direction of the second thick-wall member 02b in fig. 12 in the embodiment of the present application. Comparing the comparative example shown in fig. 11 with the example of the present application shown in fig. 12, the area of the connecting step face 23 in fig. 11 is significantly larger than the area of the connecting step face 23 in fig. 12, and the range of the connecting step face 23 which can be observed in fig. 11 is larger when the front face of the second thick-walled member 02b is observed at the same azimuth point O. Therefore, the included angle between the light-emitting plane 21 and the connecting step surface 23 is an obtuse angle, so that the area of the connecting step surface 23 can be effectively reduced, the dark space caused by the connecting step surface 23 observed from angles other than the front surface can be reduced as much as possible, and the light-emitting effect of the second thick-wall part 02b is improved. In addition, in the non-lighting state, the included angle α 1 is set to be an obtuse angle, which can weaken the saw tooth state of the front surface of the second thick-walled member 02b and improve the appearance quality of the thick-walled member.

Further, as shown in fig. 6, 13 and 14, a plurality of light incident planes 22 parallel to each other are disposed on the back surface of the second thick-walled material 02b, and the plurality of light incident planes 22 are disposed at intervals in the left-right direction of the second thick-walled material 02 b.

In the embodiment of the present application, the back surface of the second thick-wall member 02b is arc-shaped, as shown in fig. 7, when the second thick-wall member 02b is viewed from above, the back surface is arc-shaped, and cannot be set to be a light incident plane 22 parallel to the light emitting plane 21, therefore, a plurality of light incident planes 22 parallel to each other are disposed on the back surface of the second thick-wall member 02b for receiving incident light, so that the back surface of the second thick-wall member 02b is zigzag.

Preferably, as shown in fig. 13, two adjacent light entrance planes 22 are connected by a connecting surface 24, and a normal direction of the connecting surface 24 is perpendicular to the front-back direction X of the second thick-wall member 02b, i.e., a plane on which the connecting surface 24 is located is parallel to the front-back direction X of the second thick-wall member 02 b. The connecting surface 24 is used for connecting two adjacent light incident planes 22, and the light guide 01a is arranged behind the second thick-wall part 02b, most light rays are emitted to the light incident plane 22 of the second thick-wall part 02b from back to front, so that loss of the light rays on the connecting surface 24 is reduced as much as possible, the connecting surface 24 is parallel to the front and back direction of the second thick-wall part 02b, direct light rays on the connecting surface 24 are reduced, the utilization rate of the light rays is improved, and the light emitting effect of the second thick-wall part 02b is ensured.

In the present embodiment, the light entrance plane 22 is aligned in the left-right direction of the second thick-walled member 02b, and thus the normal direction of the connection surface 24 is disposed in the left-right direction Y of the second thick-walled member 02 b.

Alternatively, if the light entrance plane 22 is aligned in the up-down direction of the thick-walled member 02, the normal direction of the connection surface 24 is disposed in the up-down direction Z of the thick-walled member 02.

It should be noted that the above-described structure is described only by taking the second thick-walled member 02b as the hybrid lamp in the embodiment of the present application as an example, and the structure of the first thick-walled member 02a as the daytime running lamp is the same as the second thick-walled member 02b, and details thereof are not repeated.

Further, as shown in fig. 15, the first light guide 01a is provided with light distribution teeth 11, a light exit arc surface 12 and two light collection guide surfaces 13 on the outer surface;

the light distribution teeth 11 and the light emergent cambered surface 12 are oppositely arranged, the light distribution teeth 11 and the light emergent cambered surface 12 are connected through two light condensing guide surfaces 13, and the light emergent cambered surface 12 faces the back surface of the first thick-wall part 02 a.

Specifically, fig. 15 shows a cross-sectional view of the first thick-walled member 02a as the daytime running light in the embodiment of the present application, in which the thickness (i.e., the height in the up-down direction) of each light emitting portion 25 of the first thick-walled member 02a is thin, the light emission range of the first light guide 01a having a tubular shape is large, and one light-condensing guide surface 13 is provided on each of the upper and lower sides of the light distribution teeth 11 in order to intensively emit light to the light emitting portions 25 of the first thick-walled member 02 a.

As shown in fig. 16, the light-gathering guide surface 13 is a plane, that is, the original arc surfaces on the upper and lower sides of the light-distributing teeth 11 of the first light guide 01a are flattened to form the light-gathering guide surface 13, so that the light is gathered to the light-emitting arc surface 12 to be scattered and emitted, and the utilization rate of the light is improved.

Preferably, the distance D between the light distribution tooth 11 and the back surface of the first thick-wall member 02a needs to be adjusted to an angle θ 15 ° -20 ° between a light ray emitted from the center position of the light distribution tooth 11 to the center of the corresponding light-emitting portion 25 and a light ray emitted from the center position of the light distribution tooth 11 to the upper edge of the light-emitting portion 25 in the figure, so as to ensure that the optimal light utilization efficiency can be obtained.

Further, fig. 4 shows a cross-sectional view of a second thick-walled member 02b as an automobile position light in the embodiment of the present application, an auxiliary light distribution tooth 14 is further provided on an outer surface of the second light guide 01b, the auxiliary light distribution tooth 14 is provided along a longitudinal direction of the second light guide 01b, and a part of light of the light source is reflected by the auxiliary light distribution tooth 14 to enter the second thick-walled member 02b and then is emitted from an upper surface 26 of the second thick-walled member 02 b.

The upper surface 26 of the second thick-walled member 02b is an arc-shaped surface, when the hybrid lamp is mounted on a vehicle body, the upper surface 26 of the second thick-walled member 02b can be seen from above the vehicle, and in order to avoid the whole upper surface 26 of the second thick-walled member 02b from appearing as a dark space, in the embodiment of the present application, the auxiliary light distribution teeth 14 are arranged on the upper surface 26 of the second light guide 01b located above, so that light is reflected to the upper surface 26 of the second thick-walled member 02 b.

As shown in fig. 4, part of the light from the light source is reflected by the auxiliary light distribution teeth 14 and then directed to the lower surface 27 of the second thick-walled material 02b, and the light is reflected by the lower surface 27 of the second thick-walled material 02b and then emitted from the upper surface 26 of the second thick-walled material 02 b. Thereby carry out the light filling to the upper surface 26 of second thick-walled spare 02b, avoid the upper surface of second thick-walled spare 02b dark space to appear, improve the whole luminous effect of second thick-walled spare 02 b.

The automobile lamp in the embodiment of the application avoids granular sensation of the front luminous effect of the thick-wall part while ensuring the luminous uniformity of the thick-wall part, and improves the texture of the side luminous effect; meanwhile, the light guide is provided with the light gathering guide surface and the auxiliary light distribution teeth, so that the utilization efficiency of a light source is improved, and the overall light-emitting texture is improved.

What has been described above is merely the principles and preferred embodiments of the present application. It should be noted that, for a person skilled in the art, several other modifications can be made on the basis of the principle of the present application, and these should also be considered as the scope of protection of the present application.

Claims

1. An automobile lamp is characterized by comprising a light source, a light guide (01) and a thick-wall part (02), wherein the light source is arranged at the end part of the light guide (01), the light guide (01) is arranged behind the thick-wall part (02), and light emitted by the light source is transmitted to the back surface of the thick-wall part (02) after being conducted by the light guide (01);

the front of thick wall spare (02) is provided with a plurality of light-emitting plane (21) that are parallel to each other, the back of thick wall spare (02) is provided with at least one income light plane (22), go into light plane (22) with light-emitting plane (21) are parallel to each other, and light is followed go into light plane (22) and jet into follow behind thick wall spare (02) light-emitting plane (21) jets out.

2. The vehicle lamp according to claim 1, wherein the front surface of the thick-wall member (02) is further provided with a plurality of connecting step surfaces (23), and two adjacent light-emitting planes (21) are connected through one connecting step surface (23).

3. The vehicle lamp according to claim 2, wherein a normal direction of the connecting step face (23) is perpendicular to a front-rear direction of the thick-walled member (02).

4. Automotive light according to claim 3, characterized in that the angle of the connecting step surface (23) with the light exit plane (21) is greater than or equal to 90 °.

5. The vehicle lamp according to claim 1, wherein a plurality of the light incident planes (22) parallel to each other are provided on the back surface of the thick-walled member (02), and the plurality of the light incident planes (22) are provided at intervals in the left-right direction of the thick-walled member (02 b).

6. The vehicle lamp according to claim 5, wherein two adjacent light incident planes (22) are connected through a connecting surface (24), and the normal direction of the connecting surface (24) is perpendicular to the front-back direction of the thick-walled member (02).

7. The vehicle lamp according to claim 1, wherein the light guide (01) comprises a first light guide (01a), the thick-wall member (02) comprises a first thick-wall member (02a), and the outer surface of the first light guide (01a) is provided with light distribution teeth (11), a light-emitting arc surface (12) and two light-gathering guide surfaces (13);

grading tooth (11) with light-emitting cambered surface (12) sets up relatively, grading tooth (11) with light-emitting cambered surface (12) are connected through two spotlight guide surfaces (13), light-emitting cambered surface (12) orientation the back of first thick-walled spare (02 a).

8. The vehicle lamp according to claim 1, wherein the light guide (01) further comprises a second light guide (01b), the thick-walled member (02) comprises a second thick-walled member (02b), an auxiliary light distribution tooth (14) is arranged on an outer surface of the second light guide (01b), the auxiliary light distribution tooth (14) is arranged along a length direction of the second light guide (01b), and a part of light rays of the light source is reflected by the auxiliary light distribution tooth (14) to enter the second thick-walled member (02b) and then is emitted from an upper surface (26) of the second thick-walled member (02 b).

9. The vehicle lamp according to claim 8, wherein the auxiliary light distribution teeth (14) are located on an upper surface (26) of the second light guide (01b), a part of light rays of a light source are reflected by the auxiliary light distribution teeth (14) and then emitted to a lower surface (27) of the second thick-wall member (02b), and the light rays are reflected by the lower surface (27) of the second thick-wall member (02b) and emitted from the upper surface (26) of the second thick-wall member (02 b).