CN212510961U - Vehicle lamps - Google Patents
Vehicle lamps Download PDFInfo
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- CN212510961U CN212510961U CN202021347494.8U CN202021347494U CN212510961U CN 212510961 U CN212510961 U CN 212510961U CN 202021347494 U CN202021347494 U CN 202021347494U CN 212510961 U CN212510961 U CN 212510961U
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Abstract
本实用新型提供的车辆用灯具，包括：第一光源、第二光源、第一光导件和第二光导件，第一光导件具有相对的第一入光端和第一出光端，第一入光端接收第一光源发射的第一照明光，第一出光端具有与第一光导件的轴线呈倾斜设置的第一出光面，第一出光面上设置有第一散射层，第一出光面用于使经传导的第一照明光在第一角度范围内出射；第二光导件具有相对的第二入光端和第二出光端，第二入光端接收第二光源发射的第二照明光，第二出光端具有与第二光导件的轴线呈倾斜设置的第二出光面，第二出光面上设置有第二散射层，第二出光面用于使经传导的第二照明光在第二角度范围内出射。该方案能够减少光损失，提高光利用率，并提高光的均匀性。
The vehicle lamp provided by the utility model comprises: a first light source, a second light source, a first light guide and a second light guide. The light end receives the first illumination light emitted by the first light source, and the first light emitting end has a first light emitting surface arranged obliquely with the axis of the first light guide, the first light emitting surface is provided with a first scattering layer, and the first light emitting surface The second light guide is used to make the guided first illumination light exit within the first angle range; the second light guide has a second light incident end and a second light exit end opposite, and the second light incident end receives the second illumination emitted by the second light source light, the second light-emitting end has a second light-emitting surface inclined to the axis of the second light guide, a second scattering layer is arranged on the second light-emitting surface, and the second light-emitting surface is used to make the guided second illumination light in Exit within the second angle range. The solution can reduce light loss, improve light utilization, and improve light uniformity.
Description
Technical Field
The utility model relates to the field of lighting technology, especially, relate to a lamp for vehicle.
Background
The lamps on the vehicle are important factors influencing the driving safety of the vehicle, the development of the automobile industry puts higher and higher requirements on the lamps of the vehicle, and the headlights of the vehicle are required to have low beam illumination and high beam illumination according to the application requirements of the headlights of the vehicle. For compact structure and cost, some vehicle lamps are made as a high beam and a low beam integrated in a module, such as a high beam and low beam integrated vehicle lamp, and have a low beam light source and a high beam light source, the reflector cup is divided into two parts, the upper part is a low beam reflector cup, the light emitted from the low beam light source is collected and projected to form the low beam illumination of the vehicle, and the lower part is a high beam reflector cup, the light emitted from the high beam light source is collected and projected to form the high beam illumination.
The light source of the traditional high-low integrated car lamp is a halogen lamp, but the halogen lamp has low electro-optical efficiency, large power consumption and low brightness, and is a 360-degree luminous body, wherein the light emitted downwards from the low-beam filament cannot be received by the low-beam reflector cup, the light emitted upwards from the high-beam filament cannot be received by the high-beam reflector cup positioned at the lower part, and the overall light utilization rate is low. The LED has the characteristics of high electro-optical efficiency, difficulty in attenuation and long service life, so that the LED is adopted to replace a traditional halogen lamp light source, and the most common LED high-low integrated vehicle lamp in the current market is characterized in that two groups of LED chips are respectively attached to the positions of a low beam filament and a high beam filament of the halogen lamp, and the two surfaces of the LED chips emit light. However, due to the excessively large light emitting angle of the LED chip, there are still some cases where the light emitted from the LED chip cannot be used, for example, some light emitted from the low beam LED chip arranged on the upper side of the bracket is emitted downwards and cannot be received and used by the low beam reflector cup, and some light emitted from the high beam LED chip arranged on the lower side of the bracket is emitted upwards and cannot be received and used by the high beam reflector cup, which results in a low light utilization rate. In addition, the light emitted from the LED chip is mainly concentrated in the central area, and the light in the edge area is less, which results in uneven brightness of the illumination pattern projected by the vehicle lamp.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a vehicle lamp to solve above-mentioned problem.
The utility model provides a lamp for vehicle, include: a first light source, a second light source, a first light guide, and a second light guide; the first light source is used for emitting first illumination light, and the second light source is used for emitting second illumination light; the first light guide is in a long strip shape and is provided with a first light inlet end and a first light outlet end which are opposite, the first light inlet end is opposite to the first light source so that first illumination light emitted by the first light source is coupled into the first light guide, the first light outlet end is provided with a first light outlet surface which is obliquely arranged with the axis of the first light guide, a first scattering layer is arranged on the first light outlet surface, and the first light outlet surface is used for enabling the first illumination light conducted by the first light guide to be emitted in a first angle range; the second light guide is in a long strip shape, is arranged side by side with the first light guide, and is provided with a second light inlet end and a second light outlet end which are opposite, the second light inlet end is opposite to the second light source so that second illumination light emitted by the second light source is coupled into the second light guide, the second light outlet end is provided with a second light outlet surface which is obliquely arranged with the axis of the second light guide, a second scattering layer is arranged on the second light outlet surface, and the second light outlet surface is used for enabling the second illumination light transmitted by the second light guide to be emitted in a second angle range.
In one embodiment, the first light emitting surface includes a first light emitting plane, the first light emitting plane is disposed in an inclined manner with respect to an axis of the first light guide, the first light emitting plane is inclined toward a direction gradually approaching the second light guide along a direction from the first light incident end toward the first light exiting end, the first light emitting plane is provided with the first scattering layer, and the first scattering layer is a scattering transmission layer.
In one embodiment, the first light-emitting surface includes a second light-emitting plane and a third light-emitting plane, the second light-emitting plane and the third light-emitting plane are respectively located at two sides of a plane passing through an axis of the first light guide, the second light-emitting plane and the third light-emitting plane are both obliquely arranged with the axis of the first light guide, the second light-emitting plane and the third light-emitting plane are gradually close to each other in a direction departing from the second light guide, the second light-emitting plane and the third light-emitting plane are provided with the first scattering layer, and the first scattering layer is a scattering transmission layer.
In one embodiment, the second and third light exit planes have different angles of inclination with respect to a plane perpendicular to the first light guide axis.
In one embodiment, the first light emitting surface includes a fourth light emitting plane, the fourth light emitting plane is disposed in an inclined manner with respect to an axis of the first light guide, the fourth light emitting plane is inclined in a direction gradually away from the second light guide along a direction from the first light incident end toward the first light exiting end, and the first scattering layer is a scattering reflective layer.
In an embodiment, the second light emitting surface includes a fifth light emitting plane, the fifth light emitting plane is disposed in an inclined manner with respect to an axis of the second light guide, the fifth light emitting plane is inclined toward a direction gradually approaching the first light guide along a direction from the second light incident end toward the second light exiting end, the fifth light emitting plane is provided with the second scattering layer, and the second scattering layer is a scattering transmission layer.
In one embodiment, the second light emitting surface includes a non-rotationally symmetric conical light emitting surface, a projection of a vertex of the non-rotationally symmetric conical light emitting surface on a cross section of the second light guide is close to the first light guide, the non-rotationally symmetric conical light emitting surface is provided with the second scattering layer, and the second scattering layer is a scattering transmission layer.
In an embodiment, the second light emitting surface includes a sixth light emitting plane, the sixth light emitting plane is disposed in an inclined manner with respect to an axis of the second light guide, the sixth light emitting plane is inclined in a direction gradually away from the first light guide along a direction from the second light incident end toward the second light exiting end, the sixth light emitting plane is provided with the second scattering layer, and the second scattering layer is a scattering reflective layer.
In one embodiment, at least a portion of a side of the first light exit end facing the second light guide is provided with a first reflective layer.
In one embodiment, at least a portion of the second light exit end facing a side of the first light guide is provided with a second reflective layer.
In one embodiment, the first light guide has a first side face connecting the first light incoming end and the first light outgoing end, the first side face comprising a first arc face and a first plane face connected; and/or the second light guide member has a second side surface connecting the second light-in end and the second light-out end, and the first side surface comprises a second cambered surface and a second plane which are connected.
In one embodiment, the first light guide has a first rectangular cross-section perpendicular to an axis of the first light guide; and/or the cross section of the second light guide member is a second rectangle, and the cross section of the second light guide member is perpendicular to the axis of the second light guide member.
In one embodiment, the first light guide and the second light guide have a space therebetween.
In one embodiment, the vehicular lamp further includes: and the shading device comprises a fixing part and a shading part, the fixing part is fixed between the first light guide part and the second light guide part, and the shading part is opposite to the first light outlet end and is used for shading part of first illumination light emitted by the first light outlet end.
In one embodiment, the vehicular lamp further includes: the first reflector is provided with a first reflecting curved surface opposite to the first light-emitting plane, and the first reflecting curved surface is used for reflecting first illumination light emitted by the first light-emitting plane; and the second reflector is provided with a second reflecting curved surface opposite to the second light-emitting plane, and the second reflecting curved surface is used for reflecting second illumination light emitted by the second light-emitting plane.
Compared with the prior art, the utility model provides a lamp for vehicle, include: the first light source and the second light source are opposite to each other, so that first illuminating light emitted by the first light source is coupled into the first light guide, second illuminating light emitted by the second light source is coupled into the second light guide, the first illuminating light is transmitted by the first light guide and then emitted through a first light emitting surface of the first light emitting end within a first angle range, and the second illuminating light is transmitted by the second light guide and then emitted through a second light emitting surface of the second light emitting end within a second angle range, so that the first illuminating light and the second illuminating light are received by a downstream optical element arranged in the corresponding angle range, the light loss is reduced, and the light utilization rate is improved; and because the first light-emitting surface and the second light-emitting surface are respectively provided with the scattering layers, the uniformity of the illumination patterns of the first illumination light and the first illumination light is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of a vehicle lamp according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a first light guide in a vehicle lamp according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a second light guide in a vehicle lamp according to an embodiment of the present invention;
fig. 4 is an axial cross-sectional view schematically illustrating a structure of a first light guide in a vehicle lamp according to an embodiment of the present invention;
fig. 5 is a schematic perspective view of another structure of a first light guide in a vehicle lamp according to an embodiment of the present invention;
fig. 6 is an axial cross-sectional view schematically illustrating still another structure of a first light guide in a vehicle lamp according to an embodiment of the present invention;
fig. 7 is an axial cross-sectional view schematically illustrating a structure of a second light guide in a vehicle lamp according to an embodiment of the present invention;
fig. 8 is an axial cross-sectional view schematically illustrating another structure of a second light guide in a vehicle lamp according to an embodiment of the present invention;
fig. 9 is an axial cross-sectional view schematically illustrating still another structure of a second light guide in a vehicle lamp according to an embodiment of the present invention.
Detailed Description
In order to facilitate understanding of the embodiments of the present invention, the embodiments of the present invention will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle lamp 100 according to an embodiment of the present invention, where the vehicle lamp 100 includes a first light source 101, a second light source 102, a first light guide 103, and a second light guide 104. Referring to fig. 4 and 7 together, fig. 4 is an axial sectional view of the first light guide 103 in the vehicle lamp 100, and fig. 7 is an axial sectional view of the second light guide 103 in the vehicle lamp 100.
The first light source 101 is used for emitting first illumination light, and the second light source 102 is used for emitting second illumination light; the first light guide 103 is elongated and has a first light entrance end 1031 and a first light exit end 1032 which are opposite to each other, the first light entrance end 1031 is opposite to the first light source 101 so as to couple the first illumination light emitted by the first light source 101 into the first light guide 103, the first light exit end 1032 has a first light exit surface 1033 which is arranged obliquely to an axis of the first light guide 103, the first light exit surface 1033 is provided with a first scattering layer 1034, the first light exit surface 1033 is used for emitting the first illumination light transmitted by the first light guide 103 within a first angle range, for example, the first light exit surface 1033 emits the first illumination light upwards, the first angle range may be 120 ° to 160 °, that is, a maximum included angle between the first illumination light emitted from the first light exit surface 1033 and a vertical plane may be 60 ° to 80 °; the second light guide 104 is in a long bar shape and is arranged side by side with the first light guide 103, and has a second light-in end 1041 and a second light-out end 1042 which are opposite, the second light-in end 1041 is opposite to the second light source 102, so that the second illumination light emitted from second light source 102 is coupled into second light guide 104, second light-emitting end 1042 has second light-emitting surface 1043 inclined with the axis of second light guide 104, second scattering layer 1044 is disposed on second light-emitting surface 1043, second light-emitting surface 1043 is used for emitting the second illumination light transmitted by second light guide 104 in a second angle range, for example, the second light emitting surface 1043 emits the second illumination light downward, the second angle range may be 120 ° -160 °, that is, the maximum included angle between the second illumination light emitted from the second light emitting surface 1043 and the vertical plane may be 60 ° to 80 °, and the first angle range and the second angle range are substantially opposite in direction. In other embodiments, the first and second angular ranges may be 110-150, respectively. In another embodiment, the second angular range is smaller than the first angular range, for example, the first angular range may be 120 ° -160 °, and the second angular range may be 100 ° -140 °, so that the second illumination light can still maintain a higher brightness when illuminated at a distance by setting a smaller second angular range. As required, the specific numerical ranges of the first angle range and the second angle range can be set according to actual requirements.
Compared with the prior art, the present invention provides a vehicle lamp 100, by making the first light source 101 and the second light source 102 respectively opposite to the first light incident end 1031 and the second light incident end 1041, the first illuminating light emitted from the first light source 101 is coupled into the first light guide 103, the second illuminating light emitted from the second light source 102 is coupled into the second light guide 104, the first illuminating light is transmitted by the first light guide 103 and then emitted in the first angular range through the first light emitting surface 133 of the first light emitting end 1032, and the second illuminating light is transmitted by the second light guide 104 and then emitted in the second angular range through the second light emitting surface 1043 of the second light emitting end 1042, so that the first illuminating light and the second illuminating light are received by the downstream optical elements disposed in the corresponding angular ranges, thereby reducing the light loss and improving the light utilization rate; moreover, since the first light-emitting surface and the second light-emitting surface are respectively provided with the first scattering layer 1034 and the second scattering layer 1044, the uniformity of the first illumination light and the first illumination light is improved.
Specifically, in the present embodiment, the first light source 101 and the second light source 102 respectively include one or more solid-state light emitting elements, and the solid-state light emitting elements may be light emitting diodes LED or laser diodes LD. The number of solid state light emitting elements in the first light source 101 and the second light source 102 may be determined according to the brightness requirement of the vehicle lighting fixture 100, for example, in one specific embodiment, the first light source 101 includes 2 white light emitting LEDs for emitting first illumination light, and the second light source 102 includes 4 white light emitting LEDs for emitting second illumination light.
In other embodiments of the present invention, the light source is not limited to a white LED or LD, for example, in one embodiment, at least one of the first light source and the second light source is a blue light source, the light guide corresponding to the blue light source is a yellow transparent phosphor (e.g., Ce: YAG transparent fluorescent ceramic), the light emitted from the blue light source enters the yellow transparent phosphor, is partially absorbed and converted into yellow light, and the remaining unabsorbed blue light and the yellow light reach the light emitting end of the light guide to be emitted together, so as to form a white light illumination source.
In the present embodiment, the vehicle lamp 100 further includes a substrate, and the first light source 101 and the second light source 102 are both provided on the same side of the substrate. Since the first light source 101 and the second light source 102 are accompanied by heat generation when they are operated to emit light, the substrate is preferably made of a material having good thermal conductivity, such as a copper material or an aluminum material, in order to allow heat to be discharged in time. Further, the vehicle lamp 100 may further include a ceramic substrate on which the first and second light sources 101 and 102 are mounted, and the ceramic substrate is mounted on the substrate.
The first light guide member 103 and the second light guide member 104 are both strip-shaped transparent light guide members, and may be made of transparent materials such as transparent acrylic resin, Polycarbonate (PC), polymethyl methacrylate (PMMA), glass, or quartz, and the first light guide member 103 and the second light guide member 104 have higher refractive indexes, so that light can be transmitted in the first light guide member 103 and the second light guide member 104 in a total reflection manner. The first light guides 103 and the second light guides 104 are arranged side by side, i.e., the first light guides 103 and the second light guides 104 extend in the same direction.
As shown in fig. 2, a cross section of the first light guide member 103 perpendicular to an axis thereof may be a semicircular shape or a major arc arcuate shape (a large semicircular shape, a portion of a larger area remaining after cutting a circular chord), specifically, the first light guide member 103 has a first side surface 1035 connecting the first light incident end 1031 and the first light exit end 1032, the first side surface 1035 includes a first arc surface 1035a and a first plane surface 1035b connected, when the first arc surface 1035a is a semicircular arc, the cross section of the first light guide member 103 is a semicircular shape, and when the first arc surface 1035a is a major arc, the cross section of the first light guide member 103 is a major arc arcuate shape. In other types of embodiments, the cross-section of the first light guide 103 perpendicular to its axis is rectangular, i.e. the first light guide 103 is an elongated rectangular light guide.
Similarly, as shown in fig. 3, the cross section of the second light guide 104 perpendicular to the axis thereof may also be a semicircular shape or a major arc shape, specifically, the second light guide 104 has a second side surface 1045 connecting the second light incident end 1041 and the first light exiting end 1042, the second side surface 1045 includes a second arc surface 1045a and a second flat surface 1045b, when the second arc surface 1045a is a semicircular arc, the cross section of the second light guide 104 is a major arc shape, when the second arc surface 1045a is a major arc, the cross section of the second light guide 104 is a major arc shape. In other types of embodiments, the cross-section of the second light guide 104 perpendicular to its axis is rectangular, i.e. the second light guide 104 is an elongated rectangular light guide.
In one embodiment of the present invention, which satisfies the technical solutions described in fig. 2 and 3, the first plane 1035b is disposed opposite to the second plane 1045b, and the two planes are substantially parallel. Further, the first plane 1035b and the second screen 1045b are arranged at an interval, so that an air gap is kept between the first light guide and the second light guide, and an air gap is kept between the first light guide and the second light guide, so that light rays incident into the light guides can be conducted by means of total reflection, and damage caused by friction when the first light guide and the second light guide shift is avoided.
The first light incident end 1031 of the first light guide 103 is opposite to the first light source 101 so that the first illumination light emitted from the first light source 101 is coupled into the inside of the first light guide 103 and is guided by total reflection inside the first light guide 103. The first light emitting end 1032 has a first light emitting surface 1033 obliquely arranged with the axis of the first light guide 103, and the first illumination light transmitted by the first light guide 103 is emitted within a first angle range through the first light emitting surface 1033. The first light emitting surface 1033 is provided with a first scattering layer 1034, and the first scattering layer 1034 is configured to perform scattering processing on the first illumination light emitted from the first light emitting surface 1033, so that the emitted first illumination light is distributed uniformly.
The second light incident end 1041 of the second light guide 104 is opposite to the second light source 102, so that the second illumination light emitted from the second light source 102 is coupled into the inside of the second light guide 104 and is guided in the inside of the second light guide 104 in a total reflection manner. The second light emitting end 1042 has a second light emitting surface 1043 inclined with the axis of the second light guide 104, and the second illumination light transmitted by the second light guide 104 is emitted within a second angle range through the second light emitting surface 1043. The second light emitting surface 1033 is provided with a second scattering layer 1034, and the second scattering layer 1034 is configured to perform scattering processing on the second illumination light emitted from the second light emitting surface 1033, so that the emitted second illumination light is distributed uniformly.
For convenience of description, in this embodiment, the directions of the first light source 101 and the second light source 102 are defined as "rear side", the directions of the first light emitting end 1032 and the second light emitting end 1042 are defined as "front side", the direction of the first light guide 103 is defined as "upper side", and the direction of the second light guide 104 is defined as "lower side", that is, the first light guide 103 and the second light guide 104 are arranged side by side up and down, the first light guide 103 is located above, and the second light guide 104 is located below.
In an embodiment, as shown in fig. 4, the first light emitting surface 1033 includes a first light emitting plane 1033a, the first light emitting plane 1033a is disposed obliquely to an axis of the first light guide 1033, and the first light emitting plane 1033a is inclined toward a direction gradually approaching the second light guide 104 along a direction from the first light incident end 1031 toward the first light emitting end 1032, that is, the first light emitting plane 1033a is inclined from top to bottom. The first light-emitting plane 1033a is provided with a first scattering layer 1034, the first scattering layer 1034 is a scattering transmission layer, and includes a transparent matrix and scattering particles dispersed in the transparent matrix, the transparent matrix may be glass or glue, and the scattering particles may be alumina particles or titanium oxide particles.
In another embodiment, as shown in fig. 5, the first light emitting surface 1033 includes a second light emitting plane 1033b and a third light emitting plane 1033c, the second light emitting plane 1033b and the third light emitting plane 1033c are respectively located at two sides of a plane passing through the axis of the first light guide 103, the second light emitting plane 1033b and the third light emitting plane 1033c are both inclined from the axis of the first light guide 103, and the second light emitting plane 1033b and the third light emitting plane 1033c are gradually close to each other in a direction away from the second light guide 104, and are arranged such that normal directions of the second light emitting plane 1033b and the third light emitting plane 1033c are obliquely forward and upward. The second light-emitting plane 1033b and the third light-emitting plane 1033c are both provided with a first scattering layer (not labeled), the first scattering layer is a scattering transmission layer, and includes a transparent matrix and scattering particles dispersed in the transparent matrix, the transparent matrix can be glass or glue, and the scattering particles can be alumina particles or titanium oxide particles.
The second and third light exit planes 1033b and 1033c may be symmetrically disposed with respect to a plane passing through the axis of the first light guide 103. Preferably, in order to obtain a cut-off line of low beam type, the second and third light exit planes 1033b and 1033c are arranged asymmetrically with respect to a plane passing through the axis of the first light guide 103, i.e. the second and third light exit planes 1033b and 1033c are arranged at different angles of inclination with respect to a plane perpendicular to the axis of the first light guide 103, e.g. the second light exit plane 1033b is located on the left side of the first light guide 103 and the third light exit plane 1033c is located on the right side of the first light guide 103, as seen in the direction of the first light exit end 1032 of the first light guide 103, the area of the left side of the low beam cup receiving light is higher and the area of the right side of the low beam cup receiving light is lower, by making the angle of inclination of the plane of the second light exit plane 1033b perpendicular to the axis of the first light guide 103 larger than the angle of inclination of the plane of the third light exit plane 1033c perpendicular to the axis of the first light guide 103, so that the first illumination light emitted from the second light-emitting plane 1033b is projected to the upper left region of the low-beam reflector cup, and the second illumination light emitted from the third light-emitting plane 1033c is projected to the lower right region of the low-beam reflector cup, so as to obtain a more obvious cut-off line of the low-beam type.
In the above two embodiments, at least a portion of the side of the first light outlet end 1032 facing the second light guide 104 (i.e. the lower side of the first light outlet end 1032) is provided with a first reflective layer 1036, and the first reflective layer 1036 may be a scattering reflective layer. When the first illumination light transmitted by the first light transmitting member 103 exits through the first light emitting surface 1033, a part of the first illumination light is reflected back to the inside of the first light transmitting member 103, and the first illumination light reflected back to the inside of the first light transmitting member 103 exits again by disposing the first reflective layer 1035, so that the light utilization rate is improved.
In another embodiment, as shown in fig. 6, the first light emitting surface 1033 includes a fourth light emitting plane 1033d, the fourth light emitting plane 1033d is disposed obliquely to an axis of the first light guide 103, and the fourth light emitting plane 1033d is inclined along a direction from the first light incident end 1031 to the first light emitting end 1032 in a direction away from the second light guide 104, that is, the fourth light emitting plane 1033d is inclined from bottom to top. The fourth light-emitting plane 1033d is provided with a first scattering layer 1034, where the first scattering layer 1034 is a scattering reflective layer, and the scattering reflective layer may be a lambertian scattering reflective layer, a gaussian scattering reflective layer, or a specular scattering reflective layer. When the first illumination light conducted through the first light conducting member 103 reaches the fourth light exit plane 1033d, it is scattered and reflected by the first scattering layer 1034, and exits from the side of the first light exit end 1032 opposite to the fourth light exit plane 1033 d. Further, at least a portion of a side of the first light outlet end 1032 facing away from the second light guide 104 (i.e., an upper side of the first light outlet end 1032) is provided with a scattering and transmitting structure 1037, such as a frosted surface, a scattering and transmitting layer, etc., so that the first illumination light scattered and reflected by the first scattering layer 1034 is conveniently emitted from the first light outlet end 1032, and the first illumination light emitted from the first light outlet end 1032 is subjected to scattering treatment by the scattering and transmitting structure 1037, so that the first illumination light emitted from the first light outlet end 1032 is more uniform.
In an embodiment, as shown in fig. 7, the second light-emitting surface 1043 includes a fifth light-emitting plane 1043a, the fifth light-emitting plane 1043a is disposed in an inclined manner with an axis of the second light guide 104, and the fifth light-emitting plane 1043a is inclined toward a direction gradually approaching the first light guide 103 along a direction from the second light-entering end 1041 toward the second light-emitting end 1042, that is, the fifth light-emitting plane 1043a is inclined from bottom to top. The fifth light-emitting plane 1043a is disposed thereon a second scattering layer 1044, which is a scattering transmission layer and includes a transparent matrix and scattering particles dispersed in the transparent matrix, where the transparent matrix may be glass or glue, and the scattering particles may be aluminum oxide particles or titanium oxide particles. Further, at least a portion of the side of the second light exit end 1042 facing the first light guide 103 is provided with a second reflective layer 1046. The second reflective layer 1046 may be a scattering reflective layer. When the second illumination light transmitted by the second light transmission member 104 exits through the second light exit surface 1043, a part of the second illumination light is reflected back to the inside of the second light transmission member 104, and the second illumination light reflected back to the inside of the second light transmission member 104 exits again by disposing the second reflection layer 1046, so that the light utilization rate is improved.
In another embodiment, as shown in fig. 8, the second light exiting surface 1043 includes a non-rotationally symmetric conical light exiting surface 1043b, a projection of a vertex of the non-rotationally symmetric conical light exiting surface 1043b on the cross section of the second light guide 104 is close to the first light guide 103, and a closest distance between a projection point of the vertex on the cross section of the second light guide 104 and an edge of the cross section is smaller than 1/2 where the projection point is farthest from the edge of the cross section. By providing the non-rotationally symmetric conical light emitting surface 1043b, the second illumination light is emitted within the second angle range after being transmitted by the second light guide 104. The non-rotationally symmetric conical light emitting surface 1043b is provided with a second scattering layer 1044, the second scattering layer 1044 is a scattering transmission layer, and includes a transparent matrix and scattering particles dispersed in the transparent matrix, the transparent matrix may be glass or glue, and the scattering particles may be aluminum oxide particles or titanium oxide particles.
In another embodiment, as shown in fig. 9, the second light-emitting surface 1043 includes a sixth light-emitting plane 1043b, the sixth light-emitting plane 1043b is disposed obliquely to an axis of the second light guide 104, and the sixth light-emitting plane 1043b is inclined in a direction gradually away from the first light guide 103 along a direction from the second light-entering end 1041 toward the second light-emitting end 1042, that is, the sixth light-emitting plane 1043b is inclined from top to bottom. A second scattering layer 1044 is disposed on the sixth light-emitting plane 1043b, the second scattering layer 1044 is a scattering reflective layer, and the scattering reflective layer may be a lambertian scattering reflective layer, a gaussian scattering reflective layer, or a specular scattering reflective layer. When the second illumination light transmitted by the second light transmitting member 104 reaches the sixth light emitting plane 1043b, the second illumination light is scattered and reflected by the second scattering layer 1044, so as to exit from the side surface of the second light emitting end 1042 opposite to the sixth light emitting plane 1043 b. Further, at least a portion of the side surface of the second light outlet 1042 facing away from the first light guide 103 (i.e. the lower side surface of the second light outlet 1042) is provided with a scattering and transmitting structure 1047, such as a frosted surface, a scattering and transmitting layer, etc., so that, on one hand, the second illumination light scattered and reflected by the second scattering layer 1044 is conveniently emitted from the second light outlet 1042, and on the other hand, the second illumination light emitted from the second light outlet 1042 is subjected to scattering treatment by the scattering and transmitting structure 1047, so that the second illumination light emitted from the second light outlet 1042 is more uniform.
Referring to fig. 1, in an embodiment of the present invention, the vehicular lamp 100 further includes a light shielding device 105, the light shielding device 105 includes a fixing portion 1051 and a light shielding portion 1052 connected to each other, the fixing portion 1051 is fixed between the first light guide 103 and the second light guide 104, and the light shielding portion 1052 is opposite to the first light emitting end 1032 for shielding a portion of the first illumination light emitted from the first light emitting end 1032.
Specifically, the fixing portion 1051 may be a strip-shaped sheet, and is sandwiched between the first light guide 103 and the second light guide 104, that is, the fixing portion 1051 is sandwiched between the first light guide 103 and the second light guide 104, so as to fix the light shielding device 105, and make the light shielding portion 1052 of the light shielding device 105 opposite to the first light emitting end 1032. Of course, the fixing portion 1051 may have other shapes, and is not particularly limited as long as it can be fixed between the first light guide 103 and the second light guide 104. The light shielding portion 1052 is substantially in the shape of a scoop, the bottom of the light shielding portion 1052 may be a curved surface or a flat surface, the light shielding portion 1052 includes a light shielding surface similar to the shape of the low beam type bright-dark cut-off line, and the light shielding portion 1052 shields a part of the first illumination light emitted from the first light emitting end 1032, so that the first illumination light forms a low beam type pattern.
In the present invention, the fixing part 1051 of the light blocking device 105 is not necessarily in direct contact with the first light guide 103 or the second light guide 104. In some embodiments, the light shielding device 105 is suspended with respect to the first light guide 103 and the second light guide 104, and the light shielding device 105 is connected to the housing or other structural member of the lamp through the fixing portion 1051, which can prevent the light shielding device 105 from damaging the total reflection of the first light guide or the second light guide on one hand, and can prevent the first light guide or the second light guide from being damaged mechanically or thermally in an operating state on the other hand.
With reference to fig. 1, the vehicular lamp 100 further includes a first reflector 106 and a second reflector 107, the first reflector 106 has a first reflecting curved surface opposite to the first light-emitting plane 1033, the first light-emitting end 1032 of the first light guide 103 is located at or near a focal point of the first reflecting curved surface, the first reflecting curved surface is configured to reflect the first illumination light emitted from the first light-emitting plane 1033, and a portion of the first illumination light reflected by the first reflecting curved surface is shielded by the light-shielding portion 1052, so as to form a low beam pattern; the second reflector 107 has a second reflecting curved surface opposite to the second light exit plane 1043, the second light exit end 1042 of the second light guide 104 is located at a focal point of the second reflecting curved surface or near the focal point, and the second reflecting curved surface is used for reflecting the second illumination light emitted from the second light exit plane, so as to form a high beam pattern. The length of the first light guide 103 is different from that of the second light guide 104, for example, the length of the first light guide 103 is greater than that of the second light guide 104, such that the first light emitting end 1032 of the first light guide 103 is greater than the second light emitting end 1042 of the second light guide 104 and is located at or near the focal point of the first reflective curved surface, the second reflective curved surface, respectively. The cross section of the first light guide 103 and/or the second light guide 104 may be a semicircle, a major arc segment, or a rectangle, etc., and the first light emitting plane 1033 and the second light emitting end 1042 may be closer to the focus of the first reflective curved surface and the second reflective curved surface in the direction perpendicular to the axis of the first light guide 103 and the axis of the second light guide 104, respectively, so as to obtain a better low beam pattern and/or high beam pattern. Of course, the cross-sectional shapes of the first light guide 103 and the second light guide 104 may be the same or different, and may be determined according to actual circumstances.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (15)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021347494.8U CN212510961U (en) | 2020-07-09 | 2020-07-09 | Vehicle lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021347494.8U CN212510961U (en) | 2020-07-09 | 2020-07-09 | Vehicle lamps |
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| Publication Number | Publication Date |
|---|---|
| CN212510961U true CN212510961U (en) | 2021-02-09 |
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| CN202021347494.8U Active CN212510961U (en) | 2020-07-09 | 2020-07-09 | Vehicle lamps |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944276A (en) * | 2021-02-24 | 2021-06-11 | 华域视觉科技(上海)有限公司 | Far and near light integrated optical device, automobile lighting device and automobile |
| CN113915582A (en) * | 2020-07-09 | 2022-01-11 | 深圳市绎立锐光科技开发有限公司 | Vehicle lamp |
| WO2022007958A1 (en) * | 2020-07-09 | 2022-01-13 | 深圳市绎立锐光科技开发有限公司 | Illumination device and vehicle lamp |
-
2020
- 2020-07-09 CN CN202021347494.8U patent/CN212510961U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915582A (en) * | 2020-07-09 | 2022-01-11 | 深圳市绎立锐光科技开发有限公司 | Vehicle lamp |
| WO2022007958A1 (en) * | 2020-07-09 | 2022-01-13 | 深圳市绎立锐光科技开发有限公司 | Illumination device and vehicle lamp |
| CN112944276A (en) * | 2021-02-24 | 2021-06-11 | 华域视觉科技(上海)有限公司 | Far and near light integrated optical device, automobile lighting device and automobile |
| CN112944276B (en) * | 2021-02-24 | 2021-10-01 | 华域视觉科技(上海)有限公司 | Far and near light integrated optical device, automobile lighting device and automobile |
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