Optical device for vehicle lamp, vehicle lighting device, and vehicle

Abstract

The present invention relates to a vehicle lamp, and discloses an optical device for a vehicle lamp, which includes a light guide part integrally formed by a first light guide body and a second light guide body. The first light guide body and the second light guide body in the light guide part are arranged side by side, a material interface is formed between the first light guide body and the second light guide body, a cut-off line structure is arranged in the second light guide body, and the refractive index of the first light guide body is greater than that of the second light guide body, so that when the light transmitted in the first light guide body irradiates on the material interface, total reflection can be formed on the material interface, and when the light transmitted in the second light guide body irradiates on the material interface, it can enter the first light guide body through the material interface. The optical device for the vehicle lamp has a compact structure, and the light path directions in different light channels can be controlled. In addition, the present invention also discloses an automotive lighting device and a vehicle.

Description

Technical Field

[0001] The present invention relates to vehicle lamps, and more particularly to an optical device for vehicle lamps. The present invention also relates to an automotive lighting device and a vehicle. Background Art

[0002] Vehicles used in different countries and regions have different left-hand drive and right-hand drive configurations. Due to the differences between left-hand drive and right-hand drive, the regulations on vehicle lamps in different countries and regions are not consistent. When this difference is reflected in the cut-off line of the low beam, the shape of the cut-off line of the low beam of left-hand drive vehicles is higher on the right and lower on the left, while the shape of the cut-off line of the low beam of right-hand drive vehicles is higher on the left and lower on the right. With the development of the automotive industry and the international economy, the internationalization of the automotive industry has been increasing day by day. As the lighting device of a vehicle, vehicle lamps are an important and indispensable component of vehicles at present and for some time to come. In order to meet the needs of the international market, automotive lighting devices need to meet the lighting requirements of different countries and regions.

[0003] In order to achieve the functions of the headlamps for left-hand drive and right-hand drive, usually different left-hand drive headlamps or right-hand drive headlamps are designed according to the different needs of different countries or regions. Since left-hand drive headlamps can only be applied to the left-hand drive market and right-hand drive headlamps can only be applied to the right-hand drive market, the versatility of the products is poor. When integrating left-hand drive and right-hand drive into one headlamp, usually the rotation of rotating mechanisms such as a light shield, a rotating shaft, and a solenoid valve is used to achieve the light pattern switching. Such a light pattern switching method has a large noise, low styling flexibility, and a relatively complex system structure.

[0004] Recently, there has also emerged a technology that sets an independent auxiliary low beam module and a main low beam module. The auxiliary low beam module forms a low beam widened illumination, and the main low beam module forms a left-hand drive cut-off area illumination or a right-hand drive cut-off area illumination. The two are combined with each other to form a left-hand drive lighting pattern or a right-hand drive lighting pattern. However, in this technology, the auxiliary low beam module and the main low beam module are usually set separately, resulting in a relatively large volume of the vehicle lamp, which is difficult to meet the requirements of today's miniaturized vehicle lamps. Moreover, if the optical elements for low beam widened illumination and the optical elements for left / right-hand drive cut-off area illumination are set close together, part of the light in the optical elements for low beam widened illumination will enter the optical elements for cut-off area illumination, which has an adverse effect on the cut-off area illumination. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an optical device for vehicle lamps, which has a compact structure and the light path in different light channels is controllable.

[0006] The further technical problem to be solved by the present invention is to provide an automotive lighting device, which has a compact structure and the bright-dark cut-off line of the lighting pattern is clear.

[0007] Another technical problem to be solved by the present invention is to provide an automobile with clear and stable lighting light pattern.

[0008] To solve the above technical problem, on the one hand, the present invention provides an optical device for vehicle lamps, which includes a light guide part integrally formed by a first light guide body and a second light guide body. The first light guide body and the second light guide body in the light guide part are arranged in parallel, a material interface is formed between the first light guide body and the second light guide body, a cut-off line structure is arranged in the second light guide body, and the refractive index of the first light guide body is greater than that of the second light guide body, so that when the light transmitted in the first light guide body irradiates on the material interface, total reflection can be formed on the material interface, and when the light transmitted in the second light guide body irradiates on the material interface, it can enter the first light guide body through the material interface.

[0009] Preferably, the optical device for vehicle lamps of the present invention includes a first light channel composed of a first light incident part, a first light passing part and a first light emitting part connected in sequence, and a second light channel composed of a second light incident part, a second light passing part and a second light emitting part connected in sequence. The first light passing part and the second light passing part constitute the light guide part, and the first light passing part is located above the second light passing part. The first light passing part is formed by the first light guide body, the second light passing part is formed by the second light guide body, the interface between the first light passing part and the second light passing part forms the material interface, and the cut-off line structure is formed in the second light passing part. Through this preferred technical solution, when light enters from the first light incident part, after being transmitted by the first light passing part and emitted from the first light emitting part, a lighting area can be formed; when it enters from the second light incident part, after being transmitted by the second light passing part and emitted from the second light emitting part, another lighting area with a bright-dark cut-off line can be formed. The light transmitted through the first light passing part can produce total reflection at the material interface between the first light passing part and the second light passing part and cannot enter the second light passing part. On the one hand, it forms the upper boundary of the lighting area, and on the other hand, it can prevent the light transmitted in the first light passing part from entering the second light passing part and affecting the bright-dark cut-off line in the other lighting area; and part of the light transmitted through the second light passing part can pass through the material interface between the first light passing part and the second light passing part, enter the first light passing part, and be emitted from the first light emitting part, so that the two lighting areas partially overlap and avoid the appearance of a dark area between the two lighting areas.

[0010] Further preferably, the first light incident part is formed by the first light guide body, and the second light incident part is formed by the second light guide body. Through this preferred technical solution, the light channel formed by the first light incident part and the first light passing part is formed by the same kind of light guide body, and the light channel formed by the second light incident part and the second light passing part is also formed by the same kind of light guide body, which can reduce the molding process of the optical device for vehicle lamps of the present invention and improve the convenience of processing.

[0011] Preferably, both the first light incident part and the second light incident part are formed by the first light guide body. In this preferred technical solution, the structure of the light incident part is relatively complex. The first light incident part and the second light incident part formed by the same light guide body can be formed in one processing, which is more convenient for processing and has a lower manufacturing cost.

[0012] As a preferred solution, both the first light incident part and the second light incident part are formed by the second light guide body. In this preferred technical solution, the first light incident part and the second light incident part are also formed by the same light guide body, which is more convenient for processing.

[0013] Preferably, the first light incident part includes a plurality of widened condenser cups. The widened condenser cups are adapted to introduce the light emitted by the light source and emit it through the first light emitting part, so as to form a low beam widened illumination area; the second light incident part includes a cut-off part condenser cup. The cut-off part condenser cup is adapted to introduce the light emitted by the light source and emit it after being blocked by the cut-off line forming structure, so as to form a low beam cut-off part illumination area; the low beam widened illumination area and the low beam cut-off part illumination area are combined to form a low beam illumination light pattern. In this preferred technical solution, since the light transmitted in the first light passing part cannot pass through the material interface between the first light passing part and the second light passing part, an upper boundary of the low beam widened illumination area corresponding to the material interface is formed, and at the same time, the light transmitted in the first light passing part is prevented from entering the second light passing part and irradiating the low beam cut-off part illumination area, which affects the light and dark cut-off line of the low beam illumination light pattern. On the other hand, a part of the light transmitted in the second light passing part can enter the first light passing part through the material interface, forming a partial overlap between the low beam cut-off part illumination area and the low beam widened illumination area, so that the connection between the low beam cut-off part illumination area and the low beam widened illumination area is good. Therefore, the formed light and dark cut-off line of the low beam illumination light pattern is clearer, and the connection dark area between the low beam cut-off part illumination area and the low beam widened illumination area is avoided.

[0014] Further preferably, the cut-off part condenser cup includes a left-driving cut-off part condenser cup and a right-driving cut-off part condenser cup. The light introduced by the left-driving cut-off part condenser cup is emitted through the second light emitting part after being blocked by the cut-off line structure, and can form a left-driving cut-off part illumination area; the light introduced by the right-driving cut-off part condenser cup is emitted through the second light emitting part after being blocked by the cut-off line forming structure, and can form a right-driving cut-off part illumination area. In this preferred technical solution, by controlling the light sources corresponding to the left-driving cut-off part condenser cup and the right-driving cut-off part condenser cup, the left-driving cut-off part illumination area and the right-driving cut-off part illumination area can be respectively formed, and combined with the low beam widened illumination area to respectively form a left-driving low beam illumination light pattern and a right-driving low beam illumination light pattern, conveniently completing the switching of the left and right driving low beam illumination light patterns.

[0015] Preferably, the optical device for vehicle lamps of the present invention further includes a Zone III structure, which includes a condenser cup extension part, a Zone III light channel, and a Zone III light exit surface that are integrally connected. The condenser cup extension part is connected to the lower side of the condenser cup of the cutoff part, and the condenser cup extension part is connected to the lower side of the second light-passing part. The Zone III light exit surface is located at the front end of the Zone III light channel. A part of the light introduced by the condenser cup of the cutoff part can enter the condenser cup extension part, pass through the Zone III light channel, and be emitted from the Zone III light exit surface to form the near-light Zone III light. Through this preferred technical solution, a small amount of light emitted by the cutoff part illumination light source can be used to form the near-light Zone III light, so as to irradiate the road marker board.

[0016] Preferably, the optical device for vehicle lamps of the present invention further includes a lens part, which includes a lens light entrance surface and a lens light exit surface. The first light exit part and the second light exit part are integrally connected to the lens light entrance surface. Through this preferred technical solution, the optical device for vehicle lamps of the present invention also has the function of an ordinary lens, that is, an independent lens does not need to be provided to form an illumination light pattern, so the structure of the vehicle lamp can be streamlined, the volume of the vehicle lamp can be reduced, and the stability of the vehicle lamp structure can be improved.

[0017] Further preferably, the lens light entrance surface is larger than the sum of the first light exit part and the second light exit part, and the first light exit part and the second light exit part are integrally connected to one side of the lens light entrance surface. In this preferred technical solution, in addition to the part connected to the first light exit part and the second light exit part, there is still a part of the lens light entrance surface outside the connection part. Other incident light can be received through this part of the lens light entrance surface, so that the lens part can also be used to realize other illumination functions.

[0018] As a preferred technical solution, the first light guide is a PC light guide or a PMMA light guide, and the second light guide is a silicone light guide. In this preferred technical solution, the PC light guide refers to a light guide made of PC material, the PMMA light guide refers to a light guide made of PMMA material, and the silicone light guide refers to a light guide made of silicone material. The light guide made of PC or PMMA material has a relatively high refractive index, and the light guide made of silicone material has a relatively low refractive index, which can be used as the first light guide and the second light guide respectively. In addition, the silicone material has high heat resistance, which can prevent the light guide from deforming or changing its light guiding performance due to the rise of temperature.

[0019] The second aspect of the present invention provides a vehicle lighting device, which uses the optical device for vehicle lamps provided in the first aspect of the present invention.

[0020] The third aspect of the present invention provides a vehicle, which uses the vehicle lighting device provided in the second aspect of the present invention.

[0021] Through the above technical solution, the optical device for vehicle lamps of the present invention includes a light guide portion formed by arranging a first light guide body and a second light guide body side by side. The first light guide body and the second light guide body can respectively form light channels for light to pass through, and the two light channels can respectively form two different illumination areas. Among them, the cut-off line structure in the second light channel can form an illumination area with a bright-dark cut-off line. The first light guide body and the second light guide body are integrally formed into a light guide portion including two light channels, reducing the volume of the optical device for vehicle lamps. The refractive index of the first light guide body is greater than that of the second light guide body, so that the light transmitted in the first light guide body can generate total reflection at the material interface formed between the first light guide body and the second light guide body. Therefore, it can prevent the light transmitted in the first light guide body from entering the second light guide body through the material interface. The light transmitted in the second light guide body does not form total reflection at the material interface, so part of the light can enter the first light guide body through the material interface. In the optical device for vehicle lamps of the present invention, the different light channels arranged side by side are closely attached together, and the structure is more compact. It can prevent the light in the first light guide body from entering the second light guide body and affecting the illumination light pattern of the illumination area formed by the light in the second light guide body. At the same time, part of the light in the second light guide body can enter the first light guide body, forming an overlapping part between the illumination area formed by the light in the first light guide body and the illumination area formed by the light in the second light guide body, preventing the formation of a dark area between the two illumination areas. The vehicle lighting device of the present invention can form different illumination areas with a smaller volume, and the illumination light pattern is clear, and the connection between the two illumination areas is good. The vehicle of the present invention also has the above advantages due to the use of the vehicle lighting device of the present invention.

[0022] Other technical features and technical effects of the present invention will be further described in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view of an embodiment of the optical device for vehicle lamps of the present invention;

[0024] Figure 2 is Figure 1 a perspective view from another angle;

[0025] Figure 3 is Figure 1 a perspective view from another angle;

[0026] Figure 4 is Figure 1 the top view;

[0027] Figure 5 is Figure 4 the schematic cross-sectional view taken along the line A-A;

[0028] Figure 6 is Figure 1Schematic diagram of the optical path of the optical device for vehicle lamps shown

[0029] Figure 7 Is a perspective view of another embodiment of the optical device for vehicle lamps of the present invention

[0030] Figure 8 Is Figure 7 The top view of

[0031] Figure 9 Is Figure 8 The schematic cross-sectional view taken along the B-B direction of

[0032] Figure 10 Is a perspective view of another embodiment of the optical device for vehicle lamps of the present invention

[0033] Figure 11 Is Figure 10 The top view of

[0034] Figure 12 Is Figure 11 The schematic cross-sectional view taken along the C-C direction of

[0035] Figure 13 Is Figure 1 The schematic diagram of the second light channel part in

[0036] Figure 14 Is a perspective view of another embodiment of the optical device for vehicle lamps of the present invention

[0037] Figure 15 Is Figure 14 The schematic diagram of the second light channel part in

[0038] Figure 16 Is Figure 15 The top view of

[0039] Figure 17 Is Figure 16 The schematic cross-sectional view taken along the D-D direction of

[0040] Figure 18 Is the schematic diagram of the left-driving low-beam illumination light pattern formed by an embodiment of the optical device for vehicle lamps of the present invention

[0041] Figure 19 Is the schematic diagram of the right-driving low-beam illumination light pattern formed by an embodiment of the optical device for vehicle lamps of the present invention

[0042] Figure 20 Is a perspective view of another embodiment of the optical device for vehicle lamps of the present invention

[0043] Figure 21 Is Figure 20 The perspective view from another angle

[0044] Figure 22 is Figure 20 the top view of;

[0045] Figure 23 is Figure 22 the schematic cross-sectional view taken along the E-E direction of;

[0046] Figure 24 is Figure 20 the schematic optical path diagram of Region III of the optical device for vehicle lamps shown in;

[0047] Figure 25 is the perspective view of another embodiment of the optical device for vehicle lamps of the present invention;

[0048] Figure 26 is Figure 25 the perspective view from another angle;

[0049] Figure 27 is Figure 25 the top view of;

[0050] Figure 28 is Figure 27 the schematic cross-sectional view taken along the F-F direction of;

[0051] Figure 29 is the schematic cross-sectional view of another embodiment of the optical device for vehicle lamps of the present invention;

[0052] Figure 30 is the schematic cross-sectional view of yet another embodiment of the optical device for vehicle lamps of the present invention;

[0053] Figure 31 is the schematic structural view of an embodiment of the vehicle lighting device of the present invention;

[0054] Figure 32 is Figure 31 the top view of;

[0055] Figure 33 is Figure 32 the schematic cross-sectional view taken along the G-G direction of.

[0056] Explanation of Reference Numerals

[0057] 1 First light guide 11 First light incident part

[0058] 12 First light passing part 13 First light emitting part

[0059] 2 Second light guide 21 Second light incident part

[0060] 211 Left-driving cut-off part condenser 212 Right-driving cut-off part condenser

[0061] 22 Second light passing part 23 Second light emitting part

[0062] 24 Cut-off line structure 241 Cut-off inclined surface

[0063] 242 Cut-off top groove 25 Condensing cup extension

[0064] 26 Light channel in Zone III 27 Light output part in Zone III

[0065] 3 Material interface 41 Low beam broadening illumination area

[0066] 42 Low beam cut-off part illumination area 421 Left-drive cut-off part illumination area

[0067] 422 Right-drive cut-off part illumination area 5 Lens part

[0068] 51 Lens light input surface 52 Lens light output surface

[0069] 6 Light source module 61 Low beam broadening light source

[0070] 62 Low beam cut-off part light source 621 Left-drive cut-off part light source

[0071] 622 Right-drive cut-off part light source 7 Lens Detailed implementation mode

[0072] In the present invention, unless otherwise stated, the orientation terms such as "front, rear, top, bottom, left, right" indicate the orientation or positional relationship based on the orientation or positional relationship after the automotive lighting device of the present invention is normally installed on the vehicle. Among them, the direction indicated by the orientation term "front" is the direction towards which the light output surface of the automotive lighting device faces. The description of the orientation or positional relationship of the vehicle lighting optical elements, the vehicle lighting module and their components in the present invention is consistent with their installation orientation in actual use.

[0073] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features.

[0074] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "set" or "connected" should be understood in a broad sense. For example, the term "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present invention, and the protection scope of the present invention is not limited to the following specific embodiments.

[0076] As Figures 1 - 12 shown, an embodiment of the optical device for vehicle lamps of the present invention includes a light guide portion for conducting vehicle lamp light. The light guide portion is integrally formed by a first light guide body 1 and a second light guide body 2. Specifically, the first light guide body 1 and the second light guide body 2 can be integrally formed by insert molding or two-color injection molding. Among them, the first light guide body 1 and the second light guide body 2 are arranged side by side. In the present invention, the side-by-side arrangement of the first light guide body 1 and the second light guide body 2 is with respect to the light conduction direction, that is to say, the first light guide body 1 and the second light guide body 2 are connected to each other in a direction perpendicular to the light conduction direction. A material interface 3 is formed at the contact portion of the first light guide body 1 and the second light guide body 2. The material interface 3 is parallel to the light conduction direction or forms a small angle therewith. A cut-off line structure 24 is provided in the second light guide body 2. The cut-off line structure 24 can block the light passing through the second light guide body to form a light and dark boundary of the light. The first light guide body 1 and the second light guide body 2 are light guide bodies made of different materials. Among them, the refractive index of the first light guide body 1 is greater than that of the second light guide body 2. In this way, when the light transmitted in the first light guide body 1 irradiates on the material interface 3, total reflection can be formed and the light is reflected back into the first light guide body 1, so that the light transmitted in the first light guide body 1 cannot enter the second light guide body 2; while when the light transmitted in the second light guide body 2 irradiates on the material interface 3, total reflection will not occur, and part of the light can be refracted at the material interface 3 and enter the first light guide body 1.

[0077] In some embodiments of the optical device for vehicle lamps of the present invention, such as Figures 1 - 17As shown in the figure, the optical device for vehicle lamps of the present invention includes a first light incident portion 11, a first light transmission portion 12, a first light exit portion 13, a second light incident portion 21, a second light transmission portion 22, and a second light exit portion 23. The first light incident portion 11, the first light transmission portion 12, and the first light exit portion 13 are connected in sequence to form a first light channel. Light can enter the first light channel from the first light incident portion 11, be transmitted through the first light transmission portion 12, and exit from the first light exit portion 13. This part of the light can be projected through a converging optical element to form a first illumination area. The converging optical element can be an independent element in the vehicle lamp, such as a lens, or a light condensing structure attached to the optical device. The second light incident portion 21, the second light transmission portion 22, and the second light exit portion 23 are connected in sequence to form a second light channel. A cut-off line structure 24 is formed in the second light transmission portion 22. The cut-off line structure 24 is provided on the lower side of the second light transmission portion 22 and has a boundary corresponding to the shape of the light and dark cut-off line of the low beam light pattern. Light can enter the second light channel from the second light incident portion 21, be transmitted through the second light transmission portion 22, and after being blocked by the cut-off line structure 24, exit from the second light exit portion 23. This part of the light can be projected through a converging optical element to form a second illumination area with a light and dark cut-off line. Among them, the first light transmission portion 12 is integrally connected to the upper side of the second light transmission portion 22 to form a light guiding portion. Moreover, the first light transmission portion 12 is formed by a first light guide 1, the second light transmission portion 22 is formed by a second light guide 2, and the interface between the first light transmission portion 12 and the second light transmission portion 22 forms a material interface 3. In this way, when the light transmitted through the first light transmission portion 12 irradiates the material interface 3, total reflection will occur, preventing the light in the first light transmission portion 12 from entering the second light transmission portion 22. On the one hand, a clear upper boundary of the first illumination area is formed, and on the other hand, it can prevent the light in the first light transmission portion 12 from irradiating the second illumination area and affecting the clarity of the light and dark cut-off line in the second illumination area. When the light transmitted through the second light transmission portion 22 irradiates the material interface 3, part of the light can be refracted at the material interface 3 and enter the first light transmission portion 12, and exit from the first light exit portion 13. After being projected through the converging optical element, an overlapping portion between the first illumination area and the second illumination area is formed, preventing a dark area from being formed between the first illumination area and the second illumination area. The first light incident portion 11 and the second light incident portion 21 are provided with light incident structures. The light incident structure can be a light collecting cup, or other light incident structures with a flat, concave, or convex light incident surface. The light incident structures of the first light incident portion 11 and the second light incident portion 21 can be the same or different. The light incident structure can better introduce the light emitted by the light source. The first light exit portion 13 and the second light exit portion 23 can be light exit structures with light exit surfaces, or can be the light exit surfaces at the front ends of the corresponding light transmission portions. The shape of the light exit surface can be freely designed according to the needs of the illumination area, and can be a plane, a cylindrical surface, a concave surface, a convex surface, or a free-form surface. The shapes of the first light exit portion 13 and the second light exit portion 23 can be the same or different.

[0078] In some embodiments of the optical device for vehicle lamps of the present invention, as Figures 1 - 6 shown, the first light incident part 11, the first light transmitting part 12 and the first light emitting part 13 are all made of the first light guide 1, the second light incident part 21, the second light transmitting part 22 and the second light emitting part 23 are all made of the second light guide 2, and the whole optical device for vehicle lamps is integrally formed. In this way, the first light incident part 11, the first light transmitting part 12 and the first light emitting part 13 are made of the same material, and there is no interface between the first light incident part 11, the first light transmitting part 12 and the first light emitting part 13; the second light incident part 21, the second light transmitting part 22 and the second light emitting part 23 are also made of the same material, and there is no interface between the second light incident part 21, the second light transmitting part 22 and the second light emitting part 23. In this way, when light passes through the corresponding light channels, there will be no reflection due to the interface, and the light efficiency of the light channels is relatively high.

[0079] As a specific embodiment of the optical device for vehicle lamps of the present invention, as Figures 7 - 9 shown, the first light incident part 11, the second light incident part 21, the first light transmitting part 12 and the first light emitting part 13 are all made of the first light guide 1, and the second light transmitting part 22 and the second light emitting part 23 are made of the second light guide 2, and the whole optical device for vehicle lamps is integrally formed. Since the structure of the light incident part is usually relatively complex, and the first light incident part 11 and the second light incident part 21 are made of the same material, the first light incident part 11 and the second light incident part 21 can be injection-molded at one time, simplifying the processing technology of the optical device for vehicle lamps of the present invention and reducing the processing cost.

[0080] As a specific embodiment of the optical device for vehicle lamps of the present invention, as Figures 10 - 12 shown, the first light incident part 11, the second light incident part 21, the second light transmitting part 22 and the second light emitting part 23 are all made of the second light guide 2, and the first light transmitting part 12 and the first light emitting part 13 are made of the first light guide 1. Similarly, since the first light incident part 11 and the second light incident part 21 are made of the same material, the first light incident part 11 and the second light incident part 21 can be injection-molded at one time, simplifying the processing technology of the optical device for vehicle lamps of the present invention. In addition, the second light guide 2 can be made of silica gel with a relatively low refractive index. Silica gel has good heat resistance, and since the light incident part is close to the light source, using silica gel material can prevent the first light incident part 11 and the second light incident part 21 from deforming or aging at a relatively high working temperature, ensuring the stability of the emitted light pattern and extending the service life of the optical device for vehicle lamps.

[0081] In some embodiments of the optical device for vehicle lamps of the present invention, as Figures 1 - 12As shown, the first light incident part 11 includes a plurality of widened condenser cups. The plurality of widened condenser cups can correspond to a plurality of light-emitting light sources one by one, and can guide the light emitted by the plurality of light-emitting light sources into the optical device for vehicle lamps of the present invention. After being transmitted through the first light passing part 12, it is emitted through the first light emitting part 13. The first illumination area formed after being projected by the converging optical element is as Figure 18 , Figure 19 shown in the low beam widened illumination area 41. The second light incident part 21 includes a cut-off part condenser cup, and a cut-off line structure 24 is arranged on the second light passing part 22. The cut-off line structure 24 can be a recess with a set shape arranged on the lower side of the second light passing part 22, or a light-shielding member arranged inside the second light passing part 22. The cut-off line structure 24 has an edge corresponding to the shape of the required light and dark cut-off line, and can block the light passing through the second light passing part 22 to form the light and dark cut-off line of the second illumination area. The cut-off part condenser cup can guide the light emitted by the corresponding light source. When the light is transmitted through the second light passing part 22, the cut-off line structure 24 blocks the passing light, and the blocked light is emitted through the second light emitting part 23. The second illumination area formed after being projected by the converging optical element is as Figure 18 , Figure 19 shown in the low beam cut-off part illumination area 42 with a light and dark cut-off line. The low beam widened illumination area 41 and the low beam cut-off part illumination area 42 are combined to form a low beam illumination light pattern with a light and dark cut-off line.

[0082] In some embodiments of the optical device for vehicle lamps of the present invention, as Figures 1 - 17 shown, the cut-off part condenser cup includes a left-driving cut-off part condenser cup 211 and a right-driving cut-off part condenser cup 212. The left-driving cut-off part condenser cup 211 and the right-driving cut-off part condenser cup 212 can correspond to the left-driving cut-off part light source and the right-driving cut-off part light source respectively. The cut-off line structure 24 is arranged at a position between the left-driving cut-off part condenser cup 211 and the right-driving cut-off part condenser cup 212. The cut-off line structure 24 can be a recess that penetrates through the second light passing part 22 up and down in the middle of the second light passing part 22. Cut-off slopes 241 are respectively formed on the left and right sides of the cut-off line structure 24, and a cut-off top groove 242 on the upper side of the second light passing part 22 is formed at the top of the cut-off line structure 24. The front end of the cut-off line structure 24 can be limited inside the second light passing part 22, or can penetrate through the second light emitting part 23 forward, dividing the light emitting part into two parts on the left and right. The settings of the cut-off slopes 241 on the left and right sides respectively correspond to the shapes of the required left-driving light and dark cut-off line and right-driving light and dark cut-off line. The light guided by the left-driving cut-off part condenser cup 211 is emitted through the second light emitting part 23 after being blocked by the cut-off line structure 24, and can form as Figure 18The left-driving cut-off part lighting area 421 shown; the light introduced through the right-driving cut-off part condenser cup 212 is blocked by the cut-off line structure 24 and then emitted through the second light-emitting part 23, and after being projected by the converging optical element, it can form as Figure 19 shown in the right-driving cut-off part lighting area 422. The left-driving cut-off part lighting area 421 is combined with the low beam broadening lighting area 41 to form the left-driving low beam lighting pattern, and the right-driving cut-off part lighting area 422 is combined with the low beam broadening lighting area 41 to form the right-driving low beam lighting pattern. The top of the cut-off line structure 24 penetrating through the second light-transmitting part 22 can make the light introduced through the left-driving cut-off part condenser cup 211 and the light introduced through the right-driving cut-off part condenser cup 212 be limited to their respective corresponding second light-transmitting part 22 areas, ensuring the clarity and lighting range of the left- and right-driving low beam lighting patterns, thereby ensuring driving safety.

[0083] As a specific embodiment of the optical device for vehicle lamps of the present invention, as Figures 20 - 24 shown, the lower side of the cut-off part condenser cup of the second light-incident part 21 extends forward to form a condenser cup extension part 25. A light channel 26 in area III is provided at the rear part of the lower side of the second light-transmitting part 22, and a light-emitting surface 27 in area III is provided at the front end of the light channel 26 in area III. The front end of the condenser cup extension part 25 is integrally connected with the light channel 26 in area III to form the structure in area III. A small part of the light introduced by the cut-off part condenser cup can enter the condenser cup extension part 25, be transmitted through the light channel 26 in area III, and be emitted through the light-emitting surface 27 in area III to form the low beam light in area III. The low beam light in area III is used for the vehicle driver to identify road signs.

[0084] In some embodiments of the optical device for vehicle lamps of the present invention, as Figures 25 - 30 shown, the optical device for vehicle lamps of the present invention further includes a lens part 5. The lens part 5 includes a lens light-incident surface 51 and a lens light-emitting surface 52, and the first light-emitting part 13 and the second light-emitting part 23 are both integrally connected with the lens light-incident surface 51. The light introduced through the first light-incident part 11 directly enters the lens part 5 through the first light-emitting part 13, and after being refracted by the lens part 5, it is emitted through the lens light-emitting surface 52 to form a first lighting area; the light introduced through the second light-incident part 21 directly enters the lens part 5 through the second light-emitting part 23, and after being refracted by the lens part 5, it is emitted through the lens light-emitting surface 52 to form a second lighting area. Since the lens part 5 is provided in the optical device for vehicle lamps of the present invention, the lens part 5 can be used as a converging optical element to project the light emitted through the first light-emitting part 13 and the second light-emitting part 23 to form a lighting pattern, so that an independently provided converging optical element in the vehicle lamp can be omitted, simplifying the structure of the vehicle lamp. At the same time, since the lens part 5 is integrally connected with other components of the optical device for vehicle lamps, the positional stability between them is higher, and the formed lighting area is also more stable.

[0085] In some embodiments of the optical device for vehicle lamps of the present invention, as Figures 25 - 30 shown, the light incident surface 51 of the lens is larger than the sum of the first light emitting portion 13 and the second light emitting portion 23, and the first light emitting portion 13 and the second light emitting portion 23 are integrally connected to the upper part of the light incident surface 51 of the lens. That is to say, the height of the light incident surface 51 of the lens is greater than the sum of the heights of the first light emitting portion 13 and the second light emitting portion 23. The upper part of the light incident surface 51 of the lens coincides with the first light emitting portion 13 and the second light emitting portion 23, and is only formed as a virtual surface, while the solid surface of the lower part of the light incident surface 51 of the lens is retained. The light can still be incident through the remaining part of the light incident surface 51 of the lens, so that a part of the lens portion 5 of the optical device for vehicle lamps of the present invention can also be used as an ordinary lens to realize other lighting functions. In this way, while realizing more functions, the structure of the vehicle lamp can be further simplified.

[0086] As a specific embodiment of the optical device for vehicle lamps of the present invention, the first light guide 1 is a PC light guide or a PMMA light guide, and the second light guide 2 is a silica gel light guide. The refractive indices of PC and PMMA are both greater than that of silica gel. When the light transmitted in the PC light guide or the PMMA light guide irradiates the interface between the PC light guide and the silica gel light guide or the interface between the PMMA light guide and the silica gel light guide, total reflection can occur. When the light transmitted in the silica gel light guide irradiates the interface between the PC light guide and the silica gel light guide or the interface between the PMMA light guide and the silica gel light guide, total reflection will not occur. However, silica gel has better heat resistance and can better withstand the higher temperature generated by the light source.

[0087] The vehicle lighting device of the present invention adopts the optical device for vehicle lamps of any embodiment of the present invention.

[0088] An embodiment of the vehicle lighting device of the present invention is as Figures 31 - 33As shown, it includes a light source module 6, the optical device for vehicle headlamps of the present invention, and a lens 7. The vehicle lighting device of the present invention includes a first light incident portion 11, a first light passing portion 12, a first light emitting portion 13, a second light incident portion 21, a second light passing portion 22, and a second light emitting portion 23. The first light incident portion 11, the first light passing portion 12, and the first light emitting portion 13 are all made of a first light guide 1, and the second light incident portion 21, the second light passing portion 22, and the second light emitting portion 23 are all made of a second light guide 2. The first light incident portion 11, the first light passing portion 12, and the first light emitting portion 13 are respectively connected in parallel with the second light incident portion 21, the second light passing portion 22, and the second light emitting portion 23. A plurality of widened condenser cups are provided on the first light incident portion 11. A left-driving cut-off portion condenser cup 211 and a right-driving cut-off portion condenser cup 212 are provided on the second light incident portion 21. The lower sides of the left-driving cut-off portion condenser cup 211 and the right-driving cut-off portion condenser cup 212 both extend forward to respectively form condenser cup extension portions 25. The fronts of the condenser cup extension portions 25 are both connected to a zone III light channel 26. A zone III light emitting surface 27 is provided at the front end of the zone III light channel 26. A cut-off line structure 24 is provided on the lower side surface of the second light passing portion 22. At a position on the light source module 6 corresponding to the light incident ports of the widened condenser cups, there are provided as many low beam widened light sources 61 as the number of widened condenser cups. At a position on the light source module 6 corresponding to the left-driving cut-off portion condenser cup 211, there is provided a left-driving cut-off portion light source 621, and at a position corresponding to the right-driving cut-off portion condenser cup 212, there is provided a right-driving cut-off portion light source 622. A lens 7 is provided in front of the first light emitting portion 13 and the second light emitting portion 23. When the low beam widened light sources 61 are turned on, the light rays emitted by the respective low beam widened light sources 61 are introduced by the corresponding widened condenser cups, transmitted through the first light passing portion 12, emitted through the first light emitting portion 13, and projected through the lens 7 to form a widened illumination area 41 as shown in Figure 18 , Figure 19. When the left-driving cut-off portion light source 621 is turned on, the light rays emitted by the left-driving cut-off portion light source 621 are introduced by the left-driving cut-off portion condenser cup 211, transmitted through the second light passing portion 22, emitted through the second light emitting portion 23, and projected through the lens 7 to form a left-driving cut-off portion illumination area 421 as shown in Figure 18 . A small portion of the light rays introduced by the left-driving cut-off portion condenser cup 211 pass through the condenser cup extension portion 25, enter the zone III light channel 26, and are emitted through the zone III light emitting surface 27 and projected through the lens 7 to form low beam zone III light rays. When the right-driving cut-off portion light source 622 is turned on, the light rays emitted by the right-driving cut-off portion light source 622 are introduced by the right-driving cut-off portion condenser cup 212, transmitted through the second light passing portion 22, emitted through the second light emitting portion 23, and projected through the lens 7 to form as shown in Figure 19The right-driving cut-off part lighting area 422 shown. A small part of the light introduced by the right-driving cut-off part condenser cup 212 passes through the condenser cup extension part 25, enters the light channel 26 of area III, and is emitted through the light-emitting surface 27 of area III. After being projected by the lens 7, the light in the low beam area III is formed. When the low beam broadening light source 61 and the left-driving cut-off part light source 621 are turned on simultaneously, as Figure 18 shown, the broadening lighting area 41 and the left-driving cut-off part lighting area 421 are combined to form the left-driving low beam lighting pattern; when the low beam broadening light source 61 and the right-driving cut-off part light source 622 are turned on simultaneously, as Figure 19 shown, the broadening lighting area 41 and the right-driving cut-off part lighting area 422 are combined to form the right-driving low beam lighting pattern. The vehicle lighting device of this embodiment uses one vehicle lamp optical device to form three different lighting areas, and the structure is more compact. And it can prevent the light emitted by the low beam broadening light source 61 from entering the second light-transmitting part 22, interfering with the light distribution pattern of the low beam cut-off part lighting area 42, and affecting the clarity of the light and dark cut-off line.

[0089] The vehicle lamp optical device provided by the present invention, the first light guide body 1 and the second light guide body 2 can respectively form a light channel. The first light guide body 1 and the second light guide body 2 are connected side by side, making the structure of the vehicle lamp optical device more compact and the volume can be designed smaller. The setting of the cut-off line structure 24 can form the light and dark cut-off line of the low beam lighting pattern. The refractive index of the first light guide body 1 is greater than that of the second light guide body 2, which can prevent the light in the first light guide body from entering the light channel of the second light guide body and interfering with the light distribution pattern formed by the light in the light channel of the second light guide body. And part of the light in the second light guide body can enter the second light guide body to form an overlapping part between the lighting areas formed by the light in the two light channels, preventing the appearance of a lighting dark area between the two lighting areas. In the preferred embodiment of the vehicle lamp optical device of the present invention, the first light guide body 1 is used to form the first light-transmitting part 12, and the second light guide body is used to form the second light-transmitting part 22, which can form different light channels respectively formed by the first light-transmitting part 12 and the second light-transmitting part 22. A plurality of broadening condenser cups are arranged on the first light-transmitting part 11, the left-driving cut-off part condenser cup 211 and the right-driving cut-off part condenser cup 212 are respectively arranged on the second light-incident part 21, and the cut-off line structure 24 is arranged at the relative position in the middle, which can be used to form the left-driving low beam lighting pattern and the right-driving low beam lighting pattern respectively through the vehicle lamp optical device, and can conveniently switch the left-driving and right-driving low beam lighting patterns by controlling the corresponding light sources. The vehicle lighting device of the present invention adopts the vehicle lamp optical device of the present invention, can form different lighting areas, and has a more compact structure, and there is less light interference between different lighting areas. The vehicle lighting device adopting the preferred embodiment of the vehicle lamp optical device of the present invention also has the advantages of each preferred embodiment at the same time.

[0090] The vehicle of the present invention that uses the vehicle lighting device according to any embodiment of the present invention also has the above advantages.

[0091] In the description of the present invention, the descriptions referring to terms such as "one embodiment", "some embodiments", "a specific implementation manner", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0092] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, including the combination of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods. However, these simple modifications and combinations should also be regarded as the content disclosed by the present invention and fall within the protection scope of the present invention.

Claims

1. An optical device for a vehicle lamp, It is characterized in that The invention comprises a light guide part formed by a first light guide (1) and a second light guide (2) in one piece, wherein the first light guide (1) and the second light guide (2) in the light guide part are arranged in parallel, a material interface (3) is formed between the first light guide (1) and the second light guide (2), a cut-off line structure (24) is arranged in the second light guide (2), and the refractive index of the first light guide (1) is greater than the refractive index of the second light guide (2), so that when light transmitted in the first light guide (1) is irradiated on the material interface (3), total reflection is formed on the material interface (3), and when light transmitted in the second light guide (2) is irradiated on the material interface (3), total reflection is formed on the material interface (3) and light transmitted in the second light guide (2) is able to enter the first light guide (1) through the material interface (3); The second light guide (2) is formed with a second light entrance portion (21), a second light passing portion (22) and a second light exit portion (23); The left and right sides of the cut-off line structure (24) are respectively formed as cut-off inclined surfaces (241); The first light guide (1) and the second light guide (2) in the light guide portion are arranged side by side in a direction perpendicular to the light transmission direction; The second light entry portion (21) comprises a cutoff focusing cup, the cutoff focusing cup being suitable for introducing light emitted by the light source, and emitting light after being shielded by the cutoff line structure (24), so as to form a low-beam cutoff lighting area, the cutoff focusing cup comprising a left-hand drive cutoff focusing cup (211) and a right-hand drive cutoff focusing cup (212); The cut-off line structure (24) is a concave structure, and the cut-off line structure (24) is arranged on a side of the second light-transmitting portion (22) away from the material interface (3), and is located between the left-driving cut-off portion focusing cup (211) and the right-driving cut-off portion focusing cup (212); The light introduced into the left-hand driving cutoff portion focusing cup (211) is blocked by the cutoff line structure (24) and then emitted through the second light emitting portion (23), thereby forming a left-hand driving cutoff portion lighting area; the light introduced into the right-hand driving cutoff portion focusing cup (212) is blocked by the cutoff line structure (24) and then emitted through the second light emitting portion (23), thereby forming a right-hand driving cutoff portion lighting area.

2. The optical device for a vehicle lamp according to claim 1, It is characterized in that The invention comprises a first light channel formed by a first light entrance portion (11), a first light passing portion (12) and a first light exit portion (13) connected in sequence, and a second light channel formed by a second light entrance portion (21), a second light passing portion (22) and a second light exit portion (23) connected in sequence, wherein the first light passing portion (12) and the second light passing portion (22) form the light guiding portion, and the first light passing portion (12) is located on the upper side of the second light passing portion (22), the first light passing portion (12) is formed by the first light guiding body (1), and the interface between the first light passing portion (12) and the second light passing portion (22) forms the material interface (3).

3. The optical device for vehicle lamps according to claim 2, wherein, the first light incident portion (11) is formed by the first light guide body (1), and the second light incident portion (21) is formed by the second light guide body (2).

4. The optical device for vehicle lamps according to claim 2, wherein, both the first light incident portion (11) and the second light incident portion (21) are formed by the first light guide body (1).

5. The optical device for vehicle lamps according to claim 2, wherein, both the first light incident portion (11) and the second light incident portion (21) are formed by the second light guide body (2).

6. The optical device for vehicle lamps according to any one of claims 2 - 5, wherein, the first light incident portion (11) includes a plurality of widened condenser cups, and the widened condenser cups are adapted to introduce the light emitted by the light source and emit the light through the first light exit portion (13) so as to be able to form a low beam widened illumination area; the low beam widened illumination area is combined with the low beam cut-off portion illumination area to form a low beam illumination light pattern.

7. The optical device for vehicle lamps according to claim 6, wherein, the optical device for vehicle lamps further includes a Zone III structure, and the Zone III structure includes a condenser cup extension portion (25), a Zone III light channel (26) and a Zone III light exit surface (27) which are integrally connected. The condenser cup extension portion (25) is connected to the lower side of the cut-off portion condenser cup, and the condenser cup extension portion (25) is connected to the lower side of the second light passing portion (22). The Zone III light exit surface (27) is located at the front end of the Zone III light channel (26). A part of the light introduced by the cut-off portion condenser cup can enter the condenser cup extension portion (25), pass through the Zone III light channel (26), and be emitted by the Zone III light exit surface (27) to form low beam Zone III light.

8. The optical device for vehicle lamps according to any one of claims 2 - 5, wherein, it further includes a lens portion (5), and the lens portion (5) includes a lens light incident surface (51) and a lens light exit surface (52). The first light exit portion (13) and the second light exit portion (23) are integrally connected to the lens light incident surface (51).

9. The optical device for vehicle lamps according to claim 8, wherein, the lens light incident surface (51) is larger than the sum of the first light exit portion (13) and the second light exit portion (23), and the first light exit portion (13) and the second light exit portion (23) are integrally connected to one side of the lens light incident surface (51).

10. The optical device for vehicle lamps according to any one of claims 2 - 5, wherein, the first light guide body (1) is a PC light guide body or a PMMA light guide body, and the second light guide body (2) is a silica gel light guide body.

11. An automotive lighting device, wherein, it includes the optical device for vehicle lamps according to any one of claims 1 to 10.

12. An automobile, wherein, it includes the automotive lighting device according to claim 11.

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