WO2022007958A1

WO2022007958A1 - Illumination device and vehicle lamp

Info

Publication number: WO2022007958A1
Application number: PCT/CN2021/105555
Authority: WO
Inventors: 付锦江; 陈彬; 原祖浩
Original assignee: 深圳市绎立锐光科技开发有限公司
Priority date: 2020-07-09
Filing date: 2021-07-09
Publication date: 2022-01-13
Also published as: CN113915583A

Abstract

An illumination device and a vehicle lamp. The illumination device comprises a light source module (140), a first light guide member (110), a second light guide member (111) and a light shielding device (120). The light source module (140) comprises a first light source for emitting first illumination light and a second light source for emitting second illumination light; and the first light guide member (110) is provided with a first light incidence end (1101) and a first light emission end (1103), wherein the first light incidence end (1101) is used for receiving the first illumination light, and wherein the first light emission end (1103) is used for emitting the first illumination light. The second light guide member (111) is provided with a second light incidence end (1111) and a second light emission end (1113), wherein the second light incidence end (1111) is used for receiving the second illumination light, and wherein the second light emission end (1113) is used for emitting the second illumination light conducted by means of the second light guide member (111). The light shielding device (120) comprises a light shielding part, which is used for shielding a part of the first illumination light emitted from the first light emission end. The illumination device can realize a preset illumination pattern.

Description

Lighting devices and lamps for vehicles

technical field

The present application belongs to the technical field of vehicle lighting, and more particularly, relates to a lighting device and a lamp for vehicles.

Background technique

Lamps on vehicles are an important factor affecting the safety of vehicles, and the development of the automotive industry has put forward higher and higher requirements for vehicle lamps. According to the application requirements of automobile headlights, automobile headlights require low-beam lighting and high-beam lighting. For low-beam lighting, there should be a clear cut-off line of light and dark. In order to consider the compact structure and cost, a far-near integrated vehicle lamp is proposed, which has both a low-beam light source and a high-beam light source. The reflector cup is divided into two parts, and the upper part is a low-beam reflector cup. Projected out to form low beam lighting of the car, and the lower part is a high beam reflector cup, which collects and projects the light emitted by the high beam light source as high beam lighting.

The existing LED far-near integrated vehicle lamp realizes low beam lighting and high beam lighting by attaching two sets of LED chips to the two sides of the bracket respectively. However, in order to realize the low beam light distribution type of the existing LED far-near integrated vehicle lamp, the structure of the vehicle lamp is complicated, the assembly is difficult, and the production cost is high.

SUMMARY OF THE INVENTION

The objects of the present application include, for example, to provide a lighting device and a vehicle lamp to improve the above-mentioned problems.

The embodiments of the present application can be implemented as follows:

In a first aspect, a lighting device is provided, including a light source module, a first light guide, a second light guide, and a shading device. The light source module includes a first light source and a second light source, the first light source is used for emitting the first illumination light, and the second light source is used for emitting the second illumination light. The first light guide is in the shape of a strip, and has a first light incident end and a first light exit end opposite to each other. The first illumination light guided by the first light guide. The second light guide is in the shape of a strip, and has a second light incident end and a second light exit end opposite to each other. The second illuminating light guided by the second light guide is arranged side by side with the first light guide. The light shielding device includes a light shielding part located at the first light exit end, and the light shielding part is used for shielding part of the first illumination light exiting from the first light exit end.

In a second aspect, a vehicle lamp is provided, including a reflector cup and a lighting device. The reflector cup includes a first reflector and a second reflector, the first reflector has a first reflective curved surface, the first reflective curved surface is used to reflect the first illumination light exiting through the first light exit end; the second reflector has a second reflector A reflective curved surface, the second reflective curved surface is used for reflecting the second illumination light exiting through the second light exit end. The lighting device is installed on the reflection cup, and the first light guide member, the second light guide member and the light shielding device are all located on the concave side of the reflection cup.

In the embodiment of the present application, a double light guide light guide element (a first light guide member and a second light guide member) corresponding to the first light source and the second light source is adopted. the first illumination light emitted from the end, so that the first illumination light forms a preset illumination pattern. The lighting device of the solution of the present application can realize a preset lighting pattern, has a simple and compact structure, can achieve miniaturization, and can reduce the production cost.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following drawings will briefly introduce the drawings that need to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore do not It should be regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is an exploded schematic diagram of a lighting device provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a light source module in a lighting device according to an embodiment of the present application

3 is a schematic diagram of a structure of a housing in the lighting device provided by the embodiment of the present application;

FIG. 4 is a schematic diagram of another structure of the housing in the lighting device provided by the embodiment of the application;

5 is a schematic diagram of a first viewing angle of a first light guide in the lighting device provided by the embodiment of the present application;

6 is a schematic diagram of a second viewing angle of the first light guide in the light shielding assembly provided by the embodiment of the present application;

7 is a schematic diagram of a first viewing angle of the second light guide in the light shielding assembly provided by the embodiment of the present application;

8 is a schematic diagram of a second viewing angle of the second light guide in the light shielding assembly provided by the embodiment of the present application;

FIG. 9 is a schematic structural diagram of a lighting device provided by an embodiment of the present application;

10 is a schematic diagram of a structure of a light-shielding device in a lighting device provided by an embodiment of the present application;

Fig. 11 is the enlarged schematic diagram of A in Fig. 10;

FIG. 12 is a schematic diagram of another structure of the shading device in the lighting device provided by the embodiment of the application;

13 is a schematic diagram of another structure of a light-shielding device in a lighting device provided by an embodiment of the present application;

FIG. 14 is an exploded schematic view of another structure of the light shielding device in the lighting device provided by the embodiment of the present application.

detailed description

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. The components of the embodiments of the present application generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

It should be noted that the features in the embodiments of the present application may be combined with each other under the condition of no conflict.

Referring to FIG. 1 , an embodiment of the present application provides a lighting device 100 . The lighting device 100 may include a light source module 140 , a first light guide 110 , a second light guide 111 , and a light shielding device 120 .

The light source module 140 includes a first light source and a second light source. The first light source is used for emitting the first illumination light, and the second light source is used for emitting the second illumination light. The first light guide member 110 and the second light guide member 111 are both strip-shaped structures, and the first light guide member 110 has a first light incident end 1101 and a first light exit end 1103 opposite to each other. The first light incident end 1101 is used for receiving the first illuminating light emitted by the first light source, and the first light emitting end 1103 is used for emitting the first illuminating light guided by the first light guide member 110 . The second light guide 111 has opposite second light incident ends 1111 and second light exit ends 1113 . The second light incident end 1111 is used for receiving the second illuminating light emitted by the second light source, and the second light emitting end 1113 is used for emitting the second illuminating light transmitted through the second light guide member 111 . The first light guide member 110 and the second light guide member 111 are made of transparent light guide material, so that the light passing through the first light guide member 110 and the second light guide member 111 can be totally reflected during transmission.

In the embodiment of the present application, the first light guide 110 includes a first light exit end 1103, the first light exit end 1103 is provided with a first light exit surface 1170, the second light guide 111 includes a second light exit end 1113, and the second light exit end 1113. The light exit end 1113 is provided with a second light exit surface 1150 . The second light guide member 111 and the first light guide member 110 are arranged side by side with a predetermined gap therebetween, and the light shielding device 120 may be located within the predetermined gap. The light shielding device 120 includes a light shielding portion 123 located at the first light exit end 1103 . The light shielding portion 123 is used for shielding part of the first illumination light emitted from the first light exit end 1103, so that the first illumination light forms a preset illumination pattern. Preferably, there is a certain interval between the light shielding portion 123 and the first light exit end 1103 .

Further, the lighting device 100 may further include a casing 130 , and the light source module 140 is mounted on one end of the casing 130 . The housing 130 defines a mounting hole 1355 , the first light guide 110 and the second light guide 111 pass through the mounting hole 1355 , and the first light incident end of the first light guide 110 and the second light incident end of the second light guide 111 Opposite to the first light source and the second light source, respectively. Please refer to FIG. 9 , FIG. 10 , FIG. 13 and FIG. 14 , the light-shielding device 120 further includes a fixing part 121 connected to the light-shielding part 123 , and the fixing part 121 is sandwiched between the first light guide part 110 and the second light guide part 111 or the fixing part 121 is fixedly connected with the housing 130 , so as to realize the fixed connection of the shading device 120 .

1 and FIG. 2 , the light source module 140 includes a first light source 141 and a second light source 142 . The first light source 141 is used to emit first illumination light, and the first illumination light is emitted as low beam through the first light guide 110 . The second light source 142 is used for emitting second illuminating light, and the second illuminating light is emitted as a high beam through the second light guide member 111 . The illuminating device 100 can be applied to the H4 far-near integrated vehicle lamp.

Optionally, as shown in FIG. 3 , the side of the casing body 131 of the casing 130 away from the light shielding device 120 includes an accommodating space, and the light source module 140 is installed in the accommodating space.

Specifically, the first light source 141 and the second light source 142 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 141 and the second light source 142 may be determined according to the brightness requirements of the vehicle lamp 100 . For example, in a specific embodiment, the first light source 141 includes two LEDs emitting white light, For emitting the first illumination light, the second light source 142 includes four LEDs emitting white light for emitting the second illumination light.

Further, the light source module 140 further includes a substrate 143 , and both the first light source 141 and the second light source 142 are disposed on the same side of the substrate 143 . Since the first light source 101 and the second light source 102 generate heat when they work and emit light, the substrate 143 is preferably made of a material with good thermal conductivity, such as copper or aluminum, in order to discharge the heat in time. Further, the light source module 140 may further include a ceramic substrate, the first light source 101 and the second light source 102 are mounted on the ceramic substrate, and then the ceramic substrate is mounted on the substrate.

In other embodiments of the present invention, the light source is not limited to white light LEDs or LDs. For example, in one embodiment, at least one of the first light source and the second light source is a blue light source, and the light guide corresponding to the blue light source It is a yellow transparent phosphor (for example, Ce:YAG transparent fluorescent ceramics). After the light emitted by the blue light source enters the yellow transparent phosphor, it is partially absorbed and converted into yellow light, and the remaining unabsorbed blue light reaches the light guide together with the yellow light. The light-emitting end is emitted to form a white light illumination source.

Further, the lighting device 100 may further include a heat dissipation module 150 , and the heat dissipation module 150 is installed on the side of the light source module 140 away from the shading device 120 for dissipating heat from the light source module 140 . Optionally, the heat dissipation module 150 is installed on the side of the light source module 140 away from the shading device 120. The heat dissipation module 150 may include a radiator 151 and a fan assembly 153. The fan assembly 153 is installed on the radiator 151 away from the light source module. 140 side. The heat dissipation of the device through the heat dissipation module 150 is beneficial to the normal operation of the lighting device 100 .

Referring to FIG. 1 and FIG. 3 , the housing 130 may include a housing body 131 and a fixing component 139 . The fixing assembly 139 is fixedly connected to the casing body 131 . Specifically, the casing body 131 defines a mounting hole 1355 , and a peripheral side surface of the casing body 131 defines a fixing groove 1351 . The fixing groove 1351 communicates with the mounting hole 1355, the fixing component 139 is fixed in the fixing groove 1351, and the fixing component 139 abuts with at least one of the first light guide 110 and the second light guide 111, so that the first light guide 110 and the second light guide 111 are in contact with each other. The second light guide 111 is fixed in the mounting hole 1355 .

During installation, the first light incident end 1101 of the first light guide 110 and the second light incident end 1111 of the second light guide 111 are inserted into the installation holes 1355 of the housing body 131 , and the light shielding device 120 is sandwiched between the first light guide The light-shielding part 123 of the light-shielding device 120 is located at the end corresponding to the first light-emitting end 1103 of the first light-guiding part 110 . The light shielding portion 123 is used for shielding part of the light emitted from the first light exit end 1103 of the first light guide member 110, so as to control the low beam type. The fixing assembly 139 fixedly connects the first light guide 110 , the second light guide 111 and the shading device 120 relative to the housing body 131 , so as to achieve the purpose of stable installation of the low beam light distribution and the shading device 120 through the dual light guide light guide elements.

Specifically, the housing body 131 may include a base 133 and a holding portion 135 , and the holding portion 135 is fixedly connected to the base 133 . The fixing portion 15 is a columnar structure, and a fixing groove 1351 is defined on the peripheral side of the holding portion 135 . The assembly 139 is fixedly connected in the fixing groove 1351, and the first light guide 110, the second light guide 111 and the light shielding device 120 are locked at the same time, so that the first light guide 110, the second light guide 111 and the light shielding device 120 can be relative to each other. The housing body 131 is fixedly connected.

Optionally, a fixing groove 1351 is formed on the peripheral side of the holding portion 135 , and the fixing groove 1351 can be formed in the middle position of the holding portion 135 .

When the fixing groove 1351 is opened at the middle position of the holding portion 135 (as shown in FIG. 3 ), the fixing groove 1351 may include a groove bottom wall 1352 , an outer side wall 1354 away from the base 133 , and an inner side wall 1356 close to the base 133 . The fixing groove 1351 formed by the groove bottom wall 1352 and the outer side wall 1354 is a U-shaped structure. The outer side wall 1354 is provided with a mounting hole 1355 which penetrates through the bottom wall 1352 of the groove.

During installation, the first light guide member 110 , the second light guide member 111 and the light shielding device 120 pass through the installation holes 1355 on the outer side wall 1354 , so as to realize the function of position limit. The fixing component 139 is fixedly connected in the fixing groove 1351 , and at least one of the first light guide 110 and the second light guide 120 abuts against the bottom wall 1352 of the groove, and the first light guide 110 and the second light guide are realized by the fixing component 139 The component 111 and the shading component 120 are locked in the housing body 131 at the same time.

It is worth noting that the diameter of the mounting hole 1355 is larger than the radial dimension of the first light guide 110 , the second light guide 111 and the light shielding device 120 after mating, so as to ensure the first light guide 110 , the second light guide 111 and the light shielding device 120 It can be inserted into the shell body 131 smoothly. In other embodiments, two installation holes may be opened on the housing body, and the first light guide member and the second light guide member are respectively installed in the two installation holes, and then the fixing components are used to complete the fixing.

When the fixing groove 1351 is opened at the edge of the holding portion 135 (as shown in FIG. 4 ), the fixing groove 1351 may include a groove bottom wall 1352 and an inner side wall 1356 close to the base 133 . The bottom wall 1352 of the groove is provided with a mounting hole 1355 in the axial direction. The first light guide member 110, the second light guide member 111 and the light shielding device 120 are inserted into the mounting hole 1355. The fixing component 139 is fixedly connected with the holding portion 135, and the first light guide The component 110, the second light guide component 111 and the light shielding component 120 are clamped and fixed.

Referring to FIG. 3 , the fixing component 139 may include a pressing block 1391 , a rigid member 1393 and an elastic member 1395 .

Wherein, the elastic member 1395 can be a silicone pad. Silicone pads are silicone products with certain tension, flexibility, excellent insulation, pressure resistance, high temperature resistance, low temperature resistance, stable chemical properties, environmental protection and safety, and no odor.

Optionally, the pressing block 1391 is provided with an embedding groove, and the extending direction of the embedding groove is the same as the extending direction of the mounting hole 1355 . When the fixing component 139 is fixedly connected to the fixing groove 1351 , the elastic member 1395 is elastically deformed to make the rigid member 1393 abut against the first light guide member 110 or the second light guide member 111 . The purpose of fixing the first light guide 110, the second light guide 111 and the light shielding device 120 is achieved by the rigid part 1393 abutting against the first light guide 110 and the second light guide 111; in addition, the rigid part 1393 can prevent damage from entering the second light guide 110. Total reflection of the light in the first light guide 110 and the second light guide 111 during the transmission process along the first light guide 110 and the second light guide 111 .

The pressing block 1391 is fixedly connected to the holding portion 135 by bolts, and the elastic member 1395 is elastically deformed to make the rigid member 1393 press against the first light guide member 110 , the second light guide member 111 and the light shielding member 120 located in the mounting hole 1355 , and has elastic properties. The elastic member 1395 plays a buffering role, and can fix the first light guide member 110 , the second light guide member 111 and the light shielding device 120 more firmly.

Specifically, please continue to refer to FIG. 1 , the first light guide member 110 and the second light guide member 111 are both strip-shaped structures, which are used to guide the light entering the first light guide member 110 and the second light guide member 111 , and transmit light into the first light guide member 110 and the second light guide member 111 . Light exits from the exit end.

Please refer to FIG. 5 , FIG. 6 , FIG. 7 and FIG. 8 , in order to enhance the stability of the light shielding device 120 installed between the first light guide member 110 and the second light guide member 111 . Optionally, the first light guide 110 includes a side surface connecting the first light incident end 1101 and the first light exit end 1103 , and the side surface of the first light guide 110 includes a first arc surface and a first flat surface 1172 connected to each other. The second light guide member 111 may also include a side surface connecting the second light incident end 1111 and the second light exit end 1113 , and the side surface of the second light guide member 111 includes a second arc surface and a second plane 1152 connected to each other, that is, the first light guide The cross-sections of the light guide member 110 and the second light guide member 111 are semicircular or arcuate. Preferably, the cross-sections of the first light guide member 110 and the second light guide member 111 are both arcuate. The first light guide 110 includes a first plane 1172 parallel to the central axis, and the second light guide 111 includes a second plane 1152 parallel to the central axis. During installation, the first plane 1172 of the first light guide 110 and the second plane 1152 of the second light guide 111 are disposed opposite to each other. In other words, by arranging the side of the first light guide 110 with the first plane 1172 and the side of the second light guide 111 with the second plane 1152 opposite to each other, the fixing part 121 of the light shielding device 120 is sandwiched between the first plane 1172 Between the second plane 1152 and the second plane 1152 , the stability during the installation process can be enhanced, so that the light shielding device 120 is not easy to swing relative to the first light guide 110 and the second light guide 111 .

Optionally, please refer to FIG. 5 and FIG. 6 , the first light guide 110 has a first light incident end 1101 and a first light exit end 1103 opposite to each other, and the first light exit end 1103 includes two first light exit surfaces 1170 , The two first light exit surfaces 1170 are inclined relative to the central axis of the first light guide member 110 , and the two first light exit surfaces 1170 are gradually approached in a direction away from the first light guide member 111 . Optionally, the included angle between the first light exit surface 1170 and the central axis of the first light guide member 110 may be 25°˜30°. The two first light exit surfaces 1170 are respectively disposed on both sides of the first plane 1172 , and the two first light exit surfaces 1170 are disposed adjacent to one side away from the first plane 1172 . In other words, the end of the first light guide 110 is formed by the two first light exit surfaces 1170 and the first plane 1172 around the central axis of the first light guide 110 .

Further, please refer to FIG. 7 and FIG. 8 , the second light guide member 111 has a second light incident end 1111 and a second light exit end 1113 opposite to each other, the second light exit end 1113 includes a second light exit surface 1150, the second light exit end 1113 The exit surface 1150 is inclined with respect to the central axis of the second light guide member 111 , and the second light exit surface 1150 is gradually approached to the first light guide member 110 in the direction away from the second light incident end 1111 , so that the second light exit surface 1150 There is an acute angle with the second plane 1152 . Optionally, the included angle between the second light exit surface 1150 and the second plane 1152 may be 70°˜80°. When the light emitted by the second light source passes through the second light guide member 111 , it is emitted from the second light emitting surface 1150 to the high beam cup.

Further, scattering layers are provided on both the second light exit surface 1150 located at the end of the second light guide 111 and the first light exit surface 1170 located at the end of the first light guide 110 .

The length of the first light guide 110 is greater than the length of the second light guide 111 . When the first light guide 110 and the second light guide 111 are installed in the case body 131 of the case 130, the first light incident end 1101 of the first light guide 110 and the second light incident end 1111 of the second light guide 111 The end faces are flush, and the end face of the first light exit end 1103 of the first light guide member 110 protrudes from the end face of the second light exit end 1113 of the second light guide member 111 (as shown in FIG. 9 ). By setting the length of the first light guide member 110 to be greater than the length of the second light guide member 111 , the light shielding portion 123 of the light shielding device 120 can be located on the side of the first light exit end 1103 close to the second light guide member 111 and at the second light exit end 1113 is on the side away from the second light incident end 1111, and this arrangement not only enables the light shielding portion 123 to block the first illumination light emitted by the first light exit end 1103, but also prevents the light shielding portion 123 from blocking the second light exit end 1113 from exiting. The second illuminating light can also effectively utilize the structural space of the illuminating device 100, so that the structure of the illuminating device 100 is more compact, which is beneficial to miniaturization.

Optionally, both the second light guide member 111 and the first light guide member 110 may be made of transparent light guide material, and the second light guide member 111 and the first light guide member 110 in the lighting device 100 provided in this embodiment of the present application are both solid glass structures. Double light guide light guide elements (the first light guide member 110 and the second light guide member 111 ) are used to guide light, the light is incident from the incident end and exits from the exit end, and the peripheral side of the double light guide light guide element needs to meet the condition of total light reflection .

Specifically, referring to FIG. 10 , the light-shielding device 120 may include a fixing portion 121 and a light-shielding portion 123 , and the light-shielding portion 123 is connected to one end of the fixing portion 121 . The fixing portion 121 is inserted into a predetermined gap formed by the first light guide member 110 and the second light guide member 111 , and is relatively fixed to the housing 130 . The fixing portion 121 is used to stabilize the light-shielding device 120 relative to the first light guide member 110 or the housing 130 , and the light-shielding portion 123 is used to protect part of the first illumination light emitted from the first light exit end 1103 of the first light guide member 110 . Shade to create a low beam pattern.

Optionally, the light-shielding portion 123 includes a first light-shielding plate 1230 and a second light-shielding plate 1235. The end of the second light-shielding plate 1235 away from the first light-shielding plate 1230 is fixedly connected to the fixing portion 121, that is, the second light-shielding plate 1235 is located in the fixing portion. 121 and the first shading plate 1230. The first light shielding plate 1230 and the second light shielding plate 1235 form a groove 1231 . The groove 1231 makes the light shielding portion 123 form a hollow structure with an opening facing the first light exit end 1103 of the first light guide 110 . The opening of the groove 1231 is opposite to the first light exit end 1103 of the first light guide member 110 , and the first light shielding plate 1230 is located on the side of the second light shielding plate 1235 away from the light source module 140 and is perpendicular to the axis of the first light guide member 110 .

Further, please refer to FIG. 11 , the end surface of the first shading plate 1230 close to the opening of the groove 1231 includes a first linear segment 1238 and a second linear segment 1239 connected to each other, and the second linear segment 1239 is opposite to the first linear segment 1238 Inclined, that is, the first straight section 1238 is arranged horizontally, and the second straight section 1239 is gradually inclined downward in the direction away from the first straight section, so that the end face of the first shading plate 1230 close to the opening of the groove 1231 and the low beam type The light and dark cutoff lines are similar in shape. When the shading device 120 is installed in the headlight of the vehicle, the first straight section 1238 is in a horizontal state, the second straight section 1239 is inclined obliquely downward relative to the first straight section 1238 , and the second straight section 1239 and the first straight section The included angle between the extension lines of the 1238 may be 10°˜20°, for example, the included angle between the second straight line segment 1239 and the extension line of the first straight line segment 1238 is 15°. Through the first straight line segment 1238 and the second straight line segment 1239 , the illumination pattern emitted by the first illumination light through the first light guide member 110 has a clear cut-off line.

Optionally, the second light-shielding plate 1235 of the light-shielding portion 123 may be a parabolic curved surface structure (as shown in FIG. 11 ), and the light-shielding portion 123 of this structure is substantially spoon-shaped.

In an optional embodiment, please refer to FIG. 12 , the second light shielding plate 1235 includes a bottom wall and a side wall connected to the edge of the bottom wall, the bottom wall is a plane perpendicular to the first light shielding plate 1230 , and the side wall is arc-shaped surface structure. When the bottom wall of the second light shielding plate 1235 is set to be flat, the light shielding portion 123 may be a flat structure. Compared with the scoop-shaped light-shielding portion, the flat-structured light-shielding portion has a simple processing technique, is convenient for production, and is beneficial to reduce the production cost in the processing process.

Please continue to refer to FIG. 12 , the end face of the first shading plate 1230 close to the opening of the groove 1231 includes a first straight line segment and a second straight line segment that are connected to each other. The second straight line segment is inclined relative to the first straight line segment, that is, the first straight line segment. Set horizontally, the second straight line segment gradually slopes downward toward the direction away from the first straight line segment, so that the end face of the first shading plate 1230 close to the opening of the groove 1231 is similar in shape to the low beam type cut-off line. When the shading device 120 is installed in the headlight of the vehicle, the first straight line segment is in a horizontal state, the second straight line segment is inclined obliquely downward relative to the first straight line segment, and the distance between the second straight line segment and the extension line of the first straight line segment is The included angle between them may be 10°˜20°, for example, the included angle between the second straight line segment and the extension line of the first straight line segment is 15°. Through the first straight line segment and the second straight line segment, the illumination pattern emitted by the first illumination light through the first light guide member 110 has a clear cut-off line. Further, the height of the side wall of the second shading plate 1235 located on the side of the second straight line segment of the first shading plate 1230 increases gradually from the first shading plate 1230 to the extending direction of the fixing portion 121, so as to better enable the The first illuminating light emitted from the first light emitting end 1103 forms an illuminating pattern required by the low beam type.

Optionally, please continue to refer to FIG. 10 , the fixing portion 121 is connected to the side of the light shielding portion 123 away from the first light shielding plate 1230 , the fixing portion 121 may be a thin strip structure, and the fixing portion 121 is sandwiched between the first light guide member 110 and the second light guide 111 .

Optionally, the shading device 120 further includes a limiting portion 126 fixedly connected with the fixing portion 121 , the limiting portion 126 protrudes from the fixing portion 121 , and the end of the housing 130 facing away from the light source module 140 is provided with a connecting portion 137 , and the limiting portion 126 is provided with a connecting portion 137 . It is attached or fixedly connected with the connecting portion 137 to make the shading device 120 more stable.

Specifically, please continue to refer to FIG. 3 , the connecting portion 137 is disposed at the end of the housing body 131 facing away from the light source module 140 , that is, the connecting portion 137 is connected to the end of the holding portion 135 away from the base 133 . The connecting portion 137 can be arranged in a U shape, and includes an arc-shaped first side surface and a planar second side surface arranged along the circumferential direction. The slot 1374 plays a guiding role for the first light guide member 110 , the second light guide member 111 and the light shielding device 120 during installation.

The connecting portion 137 includes a defining surface 1372 and a positioning groove 1374 coaxially arranged with the mounting hole 1355 of the holding portion 135. The radius of the positioning groove 1374 may be slightly larger than or equal to the radius of the mounting hole 1355, which is convenient for the first light guide 110 and the second light guide. The component 111 and the shading component 120 are inserted into the mounting hole 1355 under the guidance of the positioning groove 1374 .

Further, the limiting surface 1372 is the second side surface of the connecting portion 137 , the plane where the second side surface is located is parallel to the central axis of the first light guide 110 and the second light guide 111 , and the limiting surface 1372 is provided with threaded holes. After the first light guide member 110 and the second light guide member 111 are both penetrated through the positioning groove 1374 and the installation hole 1355 at the same time, there is a predetermined gap between the first light guide member 110 and the second light guide member 111, and the light shielding member 120 is installed in the predetermined gap. In the setting gap, the limiting portion 126 of the shading device 120 is provided with a through hole 1217 which is matched with the threaded hole on the limiting surface 1372 . In another embodiment, please refer to FIG. 12 , the shading device 120 includes a fixing portion 1121 and a limiting portion 126 , and the fixing portion 121 and the limiting portion 126 have a cross-shaped structure, and the limiting portion 126 is not provided with a through hole 1217 , so that the limiting portion 126 and the limiting surface 1372 of the connecting portion 137 are attached to each other, which can also improve the stability of the light-shielding device 120 , so that the light-shielding device 120 is not easy to swing relative to the first light guide 110 and the second light guide 111 .

It can be understood that, the fixing part and the connecting part of the light-shielding device can also be fixedly connected in other ways, for example, welding, glue bonding and so on. The specific connection method is not limited, and the specific connection is determined according to actual needs.

During installation, the fixing portion 121 is clamped in a preset gap between the first light guide 110 and the second light guide 111 , and the limiting portion 126 protrudes from the central axis of the second light guide 111 and the first light guide 110 . At least one side of the plane where the central axis lies. When the limiting portion 126 and the fixing portion 121 are disposed crosswise and connected to form a substantially cross-shaped structure, the limiting portion 126 protrudes from both sides of the plane where the central axis of the second light guide member 111 and the central axis of the first light guide member 110 are located, and The limiting portion 126 is used to fit with the housing 130 . Specifically, the limiting portion 126 is fitted or fixedly connected to the connecting portion 137 of the housing.

In another optional embodiment, please refer to FIG. 13 , the light shielding device 120 may further include a support member 125 , and the support member 125 is a thin strip-shaped structure. The support member 125 is used to be sandwiched between the first light guide member 110 and the second light guide member 111 , so that there is a preset gap between the first light guide member 110 and the second light guide member 111 , so that the fixing portion 121 is away from the shielding portion 123 . One end may be sandwiched between the first light guide 110 and the second light guide 111 .

Specifically, the fixing portion 121 may include a first support rod 1213 and a second support rod 1214 that are spaced apart. The first support rod 1213 and the second support rod 1214 are fixedly connected at one end close to the shading portion 123 . The first support rod 1213 and There is an avoidance gap 1215 between the second struts 1214 . The ends of the first support rod 1213 and the second support rod 1214 away from the light-shielding portion 123 are both provided with through holes 1217 . During installation, bolts are used to pass through the through holes 1217 to be threadedly connected to the threaded holes, so that the fixing portion 121 and the housing 130 are fixedly connected, and the fixed first support rod 1213 and the second support rod 1214 are located in the first light guide member 110 respectively. The central axis of the second light guide 111 and the two sides of the plane where the central axis of the second light guide 111 is located.

It can be understood that the ends of the first support rod 1213 and the second support rod 1214 away from the shading portion 123 and the connecting portion 137 of the housing 130 may be fixedly connected by other means, such as welding, glue bonding, etc. The specific form of the fixed connection is not limited.

Optionally, both ends of the first support rod 1213 and the second support rod 1214 away from the shading part 123 are provided with a locking part 1216 , and the width of the locking part 1216 is larger than the width of the first support rod 1213 and the second support rod 1214 The side of the locking portion 1216 close to the avoidance gap 1215 is the inner side, and the inner side of the locking portion 1216 and the inner sides of the first support rod 1213 and the second support rod 1214 are located on the same plane. The side of the locking portion 1216 away from the avoidance gap 1215 is the outside, and the outside of the locking portion 1216 protrudes from the outside of the first support rod 1213 and the second support rod 1214 . The locking portion 1216 is provided with the above-mentioned through hole 1217 . The locking portion 1216 is provided so that the area of the connection portion between the fixing portion 121 and the housing 130 is larger, which is beneficial for the shading device 120 to be stably fixed on the housing 130 .

In the light-shielding device 120 of this structure, the fixing portion 121 is designed as the first support rod 1213 and the second support rod 1214, and the first support rod 1213 and the second support rod 1214 have a structure with an avoidance gap 1215, so that the light is shielded. During the installation process of the device 120 with the dual light guide light guide element (the first light guide member 110 and the second light guide member 111 ), the fixing portion 121 can avoid the possible friction with the first light guide member 110 and the second light guide member 111 . position, which reduces the situation that the first light guide 110 and the second light guide 111 are scratched due to friction. By being sandwiched between the first light guide member 110 and the second light guide member 111 by the support member 125, the relative positions of the double light guide light guide elements are ensured. On the premise of realizing the stable installation of the low-beam light distribution and light-shielding device 120, it is possible to prevent the first light guide 110 and the second light guide 111 from being damaged due to friction and scratches during the installation process. The total reflection during transmission in the light guide 111 affects product performance. In addition, the fixing portion 121 having the first support rod 1213 and the second support rod 1214 has a simple structure, is convenient to process and assemble, is conducive to reducing production costs, and is conducive to avoiding the damage to the first light guide member 110 and the second light guide member 111. Potential damage risk.

The light-shielding device 120 can be made of metal material, and the thickness of the fixing portion 121 is relatively thin, for example, 0.1-0.3 mm, so that the light-shielding device 120 has a certain flexibility. When the shading device 120 is installed between the double light guide light guide elements, the first light guide 110 and the second light guide 111 can press-fit the fixing portion 121 of the shading device 120 .

Referring to FIG. 14 , when the light-shielding device 120 includes a support member 125 , a fixed portion 121 that is fixedly connected, and a light-shielding portion 123 , the support member 125 is sandwiched in a predetermined gap between the first light guide member 110 and the second light guide member 111 and It is located in the fixing groove 1351 of the holding part 135 . The first support rod 1213 and the second support rod 1214 of the fixing portion 121 are respectively located on two sides of the plane where the central axis of the first light guide member 110 and the central axis of the second light guide member 111 are located. At the same time, the through holes 1217 opened at the ends of the first support rod 1213 and the second support rod 1214 away from the light-shielding portion 123 just fit with the threaded holes opened on the limiting surface 1372 of the connecting portion 137 , and the bolts pass through the through holes 1217 and are connected to the limiting surface 1372 of the connecting portion 137 . Face 1372 threaded connection.

Preferably, the width of the avoidance gap 1215 formed between the first support rod 1213 and the second support rod 1214 (the distance between the first support rod 1213 and the second support rod 1214 ) is greater than or equal to the width of the first light guide 110 toward the The thickness of the clearance gap 1215 between the first support rod 1213 and the second support rod 1214 is greater than or equal to the thickness of the first light guide member 110 and the second light guide member on the side surface of the second light guide member 111 or the side surface of the second light guide member 111 facing the first light guide member 110 . The distance between 111, that is, the avoidance gap 1215 formed between the first support rod 1213 and the second support rod 1214 is greater than or equal to the preset gap formed between the first light guide member 110 and the second light guide member 111, in this implementation In the example, there is a certain interval between the fixing portion 121 and the first light guide member 110 and the second light guide member 111 , so as to avoid the problem that the fixing portion 121 damages the first light guide member 110 and the second light guide member. It should be noted that both the first support rod 1213 and the second support rod 1214 have a certain hardness, so as to ensure the stability of the light shielding portion 123 .

The light-shielding device 120 of this structure has an ingenious and reasonable structural design, which is convenient for installation, and also effectively avoids the position where friction with the first light guide 110 and the second light guide 111 may occur during the installation process. The case where the first light guide 110 and the second light guide 111 are rubbed to affect the performance of the product.

The lighting device 100 provided by the embodiment of the present application is applied to the lighting of the vehicle as a whole by assembling the light source module 140 , the first light guide member 110 , the second light guide member 111 , the shading device 120 , the housing 130 and the heat dissipation module 150 . It can ensure the light distribution of the low beam and improve the safety and reliability of the light distribution during the driving process of the vehicle.

The installation method of the lighting device 100 provided by the embodiment of the present application is as follows:

First, insert the first light incident end 1101 of the first light guide 110 and the second light incident end 1111 of the second light guide 111 into the installation holes 1355 of the casing body 131 in the casing 130 , and the first light guide is passed through the installation holes 1355 The light guide 110 and the second light guide 111 are pre-positioned. Specifically, insert the second light incident end 1111 of the second light guide 111 and the first light incident end 1101 of the first light guide 110 into the installation hole 1355 of the housing body 131 , and insert the second light guide 111 into the installation hole 1355 . The position of the second light incident end 1111 is flush with the position of the first light incident end 1101 after the first light guide 110 is inserted into the mounting hole 1355 .

Then, the fixing portion 121 of the light shielding device 120 is inserted between the second light guide member 111 and the first light guide member 110 , and the end of the fixing portion 121 away from the light shielding portion 123 can be located in the fixing groove of the holding portion 135 of the housing 130 Inside 1351 , the limiting portion 126 is abutted with the limiting surface 1372 of the connecting portion 137 of the housing 130 .

Finally, the fixing assembly 139 is fixedly connected to the fixing groove 1351 of the fixing portion 235 , and the shading device 120 , the first light guide 110 and the second light guide 120 are locked between the fixing assembly 139 and the housing body 131 .

It can be understood that, when the fixing portion 121 of the shading device 120 is the structure of the first support rod 1213 and the second support rod 1214, in the above steps, first, the support member 125 is inserted into the second light guide member 111 and the second light guide member 111. Between a light guide member 110 and the support member 125 is located in the fixing groove 1351 of the holding portion 135 , so that a predetermined gap is formed between the second light guide member 111 and the first light guide member 110 . Then, insert the ends of the first support rod 1213 and the second support rod 1214 away from the light shielding portion 123 between the second light guide member 111 and the first light guide member 110, and make the first support rod 1213 and the second support rod 1214 The end of the connector 137 is matched with the defining surface 1372 of the connecting portion 137 . During the insertion process, try to keep the first support rod 1213 and the second support rod 1214 away from the position where the first light guide member 110 and the second light guide member 111 are easily touched, so as to avoid the first light guide member 110 and the second light guide member. Scratches are formed on the outer surface of the 111 to prevent damage to the total reflection of the first light guide 110 and the second light guide 111 . Finally, the fixing component 139 is fixedly connected to the holding part 135 , so that the first light guide member 110 , the second light guide member 111 and the support member 125 are fixedly connected with respect to the housing body 131 . In addition, bolts are used to pass through the through holes 1217 of the first support rod 1213 and the second support rod 1214 to be threadedly connected to the threaded holes on the defining surface 1372 of the connecting portion 137 . At this time, the light-shielding portion 123 of the light-shielding device 120 just corresponds to the first light exit surface 1170 of the first light guide 110, and is used to shield part of the light emitted from the first light exit surface 2170, thereby controlling the low beam type.

In the lighting device 100 provided by the embodiment of the present application, by fixing the double light guide light guide element (the second light guide member 111 and the first light guide member 110 ) and the light shielding device 120 on the casing 130 , the low beam light distribution and light shielding are realized. Under the premise of stable installation of the screen, the assembly process is simplified, the structure is simple, the assembly difficulty is reduced, the potential damage risk of the double light guide light guide element in the assembly process is effectively improved, and the production cost is reduced.

Embodiments of the present application also provide a lamp for a vehicle, especially a low beam and a high beam in a headlight of a vehicle. The luminaire may include a reflector cup and the above-mentioned lighting device 100 .

The reflector cup includes a first reflector and a second reflector, the first reflector has a first reflective curved surface, and the first reflective curved surface is used to reflect the first illumination light exiting through the first light exit end 1103 . The second reflector has a second reflective curved surface, and the second reflective curved surface is used to reflect the second illumination light emitted through the second light emitting end 1113 .

The first reflective curved surface of the first reflector is arranged opposite to the second reflective curved surface of the second reflector, the first reflector and the second reflector can be arranged separately, or can be spliced into one, the first reflector is located on the reflector cup side, and the second reflector is located on the lower side of the reflector cup. The lighting device 100 is installed on the base of the reflector cup, and the first light guide member 110 , the second light guide member 111 and the light shielding device 120 are all located on the concave side of the reflector cup. Specifically, the first reflector is a low beam reflector cup, the second reflector is a high beam reflector cup, the first reflector corresponds to the first light exit end 1103 of the first light guide 110, and is used to receive and reflect light from the first light guide The second reflector corresponds to the second light exit end 1113 of the second light guide 111 and is used to receive the light emitted from the first light exit end 1113 of the second light guide 111 light. Most of the first illumination light emitted by the first light exit end 1103 is projected on the first reflector located on the upper side of the reflector cup, and the light shielding portion 123 is also used for shielding the first illumination light reflected from the first reflector, The first illumination light reflected from the first reflector and not blocked by the groove 1231 may form a low beam type.

The lighting device 100 and the vehicle lamp provided by the embodiments of the present application simplify the assembly process and reduce the production cost under the premise of realizing the low beam light distribution of the vehicle lighting light source and the stable installation of the shading device 120 by using the double light guide light guide elements. , while reducing the potential risk of damage to the double light guide light guide element during the assembly process, and on the other hand, enhancing the product competitiveness.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or some technical features thereof are equivalently replaced; and these modifications or replacements do not drive the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

A lighting device, characterized in that it includes:

a light source module, comprising a first light source and a second light source, 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 strip-shaped and has a first light incident end and a first light exit end opposite to each other, the first light incident end is used for receiving the first illumination light emitted by the first light source, and the first light incident end is used for receiving the first illumination light emitted by the first light source. The light exit end is used for exiting the first illumination light guided by the first light guide member;

The second light guide is strip-shaped and has a second light incident end and a second light exit end opposite to each other. The second light incident end is used to receive the second illumination light emitted by the second light source. The light exit end is used for emitting the second illumination light guided by the second light guide member, and the second light guide member is arranged side by side with the first light guide member; and

The light shielding device includes a light shielding part located at the first light exit end, and the light shielding part is used for shielding part of the first illumination light exiting from the first light exit end.
The lighting device according to claim 1, further comprising a housing, the light source module is mounted on one end of the housing, the housing defines a mounting hole, the first light guide and the The second light guide is penetrated through the mounting hole, the first light incident end and the second light incident end are respectively opposite to the first light source and the second light source;

The shading device further includes a fixing part connected to the shading part, the fixing part is sandwiched between the first light guide and the second light guide and/or the fixing part and the casing Fixed connection.
The lighting device according to claim 2, wherein a predetermined gap is formed between the first light guide member and the second light guide member, and the fixing portion is inserted and fixed in the predetermined gap.
The lighting device according to claim 2, wherein the housing comprises a housing body and a fixing component, a fixing groove communicated with the mounting hole is formed on the peripheral side of the housing body, and the fixing component is fixed on the the fixing groove, and the fixing component abuts at least one of the first light guide and the second light guide, so that the first light guide and the second light guide are fixed to the Mounting holes.
The lighting device according to claim 2, wherein the shading device further comprises a limiting portion fixedly connected with the fixing portion, the limiting portion protrudes from the fixing portion, and the housing faces away from the fixing portion. One end of the light source module is provided with a connecting portion, and the limiting portion is fitted or fixedly connected with the connecting portion.
The lighting device according to claim 3, wherein the shading device further comprises a support member, and the support member is sandwiched in the preset gap;

One end of the housing facing away from the light source module is provided with a connecting portion;

The fixing part includes a first support rod and a second support rod arranged at intervals, and one end of the first support rod and the second support rod away from the shading part is fixedly connected to the connecting part.
The lighting device according to claim 4, wherein the fixing component comprises a pressing block, a rigid part and an elastic part;

The pressing block is provided with an embedding groove, and the elastic member and the rigid member are embedded in the embedding groove in sequence. When the fixing component is fixedly connected to the fixing groove, the elastic member is elastically deformed. so that the rigid member abuts against at least one of the first light guide member and the second light guide member.
The lighting device according to claim 1, wherein the light shielding part comprises a first light shielding plate and a second light shielding plate, the first light shielding plate and the second light shielding plate enclose a groove, and the The opening of the groove is opposite to the first light outgoing end of the first light guide, and the first shading plate is located on the side of the second shading plate away from the light source module and is opposite to the first light guide The axis is vertical;

The end surface of the first light shielding plate close to the opening of the groove includes a first straight line segment and a second straight line segment that are connected to each other, and the second straight line segment is inclined relative to the first straight line segment.
The lighting device according to claim 8, wherein the second light shielding plate is a parabolic curved surface structure; or

The second light shielding plate includes a bottom wall and a side wall connected to the edge of the bottom wall, the bottom wall is a plane perpendicular to the first light shielding plate, and the side wall is a curved surface.
The lighting device according to claim 1, wherein the first light guide member includes a side surface connecting the first light incident end and the first light exit end, and the side surface of the first light guide member includes a side surface connecting the first light incident end and the first light exit end. The first arc surface and the first plane of ;

The second light guide includes a side surface connecting the second light incident end and the second light exit end, the side surface of the second light guide includes a connected second arc surface and a second plane, the first The plane and the second plane are arranged opposite to each other.
The lighting device according to claim 10, wherein the first light exit end comprises two first light exit surfaces, and the two first light exit surfaces are both opposite to the center of the first light guide member The axes are arranged obliquely, and the two first light exit surfaces are respectively arranged on two sides of the first plane and gradually approach in a direction away from the second light guide.
The lighting device according to claim 11, wherein the second light exit end comprises a second light exit surface, and the second light exit surface is inclined relative to the central axis of the second light guide, and is located at the center of the second light guide member. The direction away from the second light incident end is gradually approached to the first light guide.
The lighting device according to claim 12, wherein a scattering layer is provided on both the first light exit surface and the second light exit surface.
The lighting device according to any one of claims 1-13, wherein the length of the first light guide is greater than the length of the second light guide.
The lighting device according to claim 14, wherein the light shielding portion is located on a side of the first light exit end close to the second light guide member, and is located at the second light exit end away from the first light exit end The side of the two light incident ends.
The lighting device according to claim 1, further comprising a heat dissipation module, the heat dissipation module being mounted on a side of the light source module away from the shading device.
A lamp for vehicles, characterized by comprising: a reflector cup, and the lighting device according to any one of claims 1-16;

The reflector cup includes a first reflector and a second reflector, the first reflector has a first reflective curved surface, and the first reflective curved surface is used to reflect the first light exiting through the first light exit end Illuminating light; the second reflector has a second reflective curved surface, and the second reflective curved surface is used for reflecting the second illuminating light exiting through the second light exit end.