Light-emitting module, low beam, high beam, and combination of low beam and high beam lighting device, and vehicle lamp

Abstract

The application provides a light-emitting module, a low beam, a high beam, a combination of a low beam and a high beam, and a vehicle lamp, and relates to the technical field of vehicle lamps. The light-emitting module comprises a light source, a reflector, an optical element, and a collimating element arranged in sequence along a light path. The optical element has a first reflecting surface, which is located on the upper surface or top surface of the optical element. Light emitted by the light source is reflected by the reflector and then enters the optical element as first light and enters the collimating element as second light. The first reflecting surface is used to reflect the first light to the collimating element to combine with the second light to form a first light pattern. By arranging the optical element with the first reflecting surface, the utilization rate of the light emitted by the light source and reflected by the reflector can be improved, the first light is added on the basis of the second light, and thus the light pattern formed by the light-emitting module has high brightness, which is particularly beneficial to improving the illumination brightness of a module based on a narrow light-emitting port size.

Description

Technical Field

[0001] This application relates to the field of automotive lighting technology, specifically to a light-emitting module and an integrated lighting device for low beam, high beam, and high and low beam, and an automotive lamp. Background Technology

[0002] With the development of society and the economy, the automotive industry has also developed. As automotive lighting technology continues to advance, more demands are being placed on the functions of vehicle lights. Lighting devices that achieve vehicle lighting functions typically include light-emitting modules to realize various light patterns and thus obtain better lighting effects.

[0003] To meet the diverse needs of actual use, many light-emitting modules are designed and developed based on narrow light-emitting port sizes. However, due to the limitation of the light-emitting port size, the light output brightness is difficult to meet the requirements. Summary of the Invention

[0004] The purpose of this application is to address the shortcomings of the prior art by providing a light-emitting module and an integrated lighting device for low beam, high beam, and high and low beam, as well as a vehicle light.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0006] In one aspect of this application, a light-emitting module is provided, including a light source, a reflector, an optical element, and a collimating element arranged sequentially along the optical path. The optical element has a first reflective surface located on the top or upper surface of the optical element. Light emitted from the light source is reflected by the reflector and then incident on the optical element as a first ray and on the collimating element as a second ray, respectively. The first reflective surface is used to reflect the first ray to the collimating element so that it can be combined with the second ray to form a first light pattern.

[0007] Optionally, the optical element has a second reflecting surface on the side near the reflector. Part of the light emitted by the light source is incident on the second reflecting surface, reflected by the second reflecting surface to the reflector, and after being reflected by the reflector, a fourth ray is incident on the collimating element. The first ray, the second ray, and the fourth ray are combined and emitted to form a second light pattern.

[0008] Optionally, the optical element has a second reflecting surface on the side near the reflector. The second reflecting surface is a light-shielding surface. Unusable third rays emitted by the light source are absorbed or reflected by the second reflecting surface to the reflector and then reflected by the reflector to the collimating element before exiting.

[0009] Optionally, the optical element and the reflector are integrally formed, and the first reflective surface is a light-shielding surface. The third light emitted by the light source that is not usable is absorbed by the first reflective surface or reflected towards the decorative ring of the light-emitting module and blocked.

[0010] Optionally, the collimating element can be a lens or a light-emitting reflector. The light emitted by the light source is modulated by the reflector and optical elements, and then projected through the lens or reflected by the light-emitting reflector to form the light-emitting pattern.

[0011] Optionally, the reflector can be any one of a parabola, a parabolic-like surface, an ellipsoid, or a ellipsoid; a light source is set at the first focal point of the ellipsoid or ellipsoid, and the second focal point is located on the side of the optical element closer to the collimating element.

[0012] In another aspect of the embodiments of this application, a low beam illumination device is provided, including at least one light-emitting module of any of the above. The light-emitting module includes a light source, a reflector, an optical element, and a collimating element. The first reflective surface of the optical element forms a cutoff line structure near the boundary of the collimating element, and the focal point of the collimating element is disposed at or near the cutoff line structure.

[0013] Optionally, the cutoff line structure includes multiple sequentially connected sub-cutoff lines, with at least two adjacent sub-cutoff lines having an included angle.

[0014] Optionally, the connection between the two sub-cutoff lines with an included angle can be curved.

[0015] Optionally, the optical element also includes a third reflecting surface located near the collimating element. The third reflecting surface has a III-zone structure, so that light rays passing through the III-zone structure are projected by the collimating element to form a near-light III-zone light pattern.

[0016] Optionally, the light output module can be either the main low beam module or the auxiliary low beam module.

[0017] Optionally, the light-emitting module also includes a heat sink for dissipating heat from the light source of the light-emitting module, and the optical components are connected to the heat sink;

[0018] Alternatively, when the optical element and the light source of the light-emitting module are positioned opposite each other, the optical element is connected to the side of the reflector closest to the collimating element.

[0019] In another aspect of the embodiments of this application, a high beam lighting device is provided, including at least one light-emitting module of any of the above, wherein the light-emitting module includes a light source, a reflector, an optical element and a collimating element, and the focal point of the collimating element is disposed at or near the boundary of the reflector near the light source.

[0020] In another aspect of the embodiments of this application, a high and low beam integrated lighting device is provided, including a low beam output module and a high beam output module, wherein the low beam output module or the high beam output module is any one of the above-mentioned output modules.

[0021] Optionally, when the low beam output module is an output module, the optical elements of the output module also include a third reflecting surface disposed near the collimating element of the output module. The high beam output module outputs high beam rays to the third reflecting surface, and the high beam rays are reflected by the third reflecting surface to the collimating element for output to form a high beam pattern.

[0022] Optionally, the high beam output module includes a high beam source and a high beam reflector, wherein one focal point of the high beam reflector coincides with the focal point of the third reflecting surface.

[0023] Optionally, when the high beam output module is an output module, the output module includes an optical element and a collimating element. The optical element also includes a third reflecting surface disposed near the collimating element. The low beam output module outputs low beam light to the third reflecting surface, and the light is reflected by the third reflecting surface to the collimating element to form a low beam pattern.

[0024] Optionally, the low beam output module includes a low beam source and a low beam reflector, wherein one focal point of the low beam reflector coincides with the focal point of the third reflecting surface.

[0025] Optionally, a cutoff line structure is formed at the junction of the third reflecting surface and the first reflecting surface, and the focal point of the collimating element is set at or near the cutoff line structure.

[0026] Optionally, the third reflecting surface can be a plane or a curved surface.

[0027] In another aspect of this application, a vehicle light is provided, including any of the above-described low beam lighting devices, or any of the above-described high beam lighting devices, or any of the above-described high and low beam integrated lighting devices.

[0028] The beneficial effects of this application include:

[0029] This application provides a light-emitting module and an integrated low beam, high beam, and high / low beam lighting device for vehicles, including a light source, a reflector, an optical element, and a collimating element arranged sequentially along the light path. The optical element has a first reflective surface located on its top or upper surface. Light emitted from the light source is reflected by the reflector and then incident on the optical element as a first ray and on the collimating element as a second ray. The first reflective surface reflects the first ray to the collimating element to combine with the second ray and form a first light pattern. By providing an optical element with a first reflective surface, the utilization rate of the light reflected by the reflector can be improved, allowing the first ray to be added on top of the second ray, thereby resulting in a higher brightness light pattern formed by the light-emitting module, which is particularly beneficial for improving the lighting brightness of modules with narrow light-emitting apertures. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is one of the structural schematic diagrams of a light-emitting module provided in an embodiment of this application;

[0032] Figure 2 This is a second schematic diagram of the structure of a light-emitting module provided in an embodiment of this application;

[0033] Figure 3 This is the third schematic diagram of the structure of a light-emitting module provided in the embodiments of this application;

[0034] Figure 4 This application provides an embodiment of an optical path diagram of a light-emitting module.

[0035] Figure 5 This is a schematic diagram of another light-emitting module provided in an embodiment of this application;

[0036] Figure 6 A schematic diagram of the low beam pattern formed when the low beam illumination device does not have an optical element with a cutoff line structure;

[0037] Figure 7 A schematic diagram of the near beam pattern formed by the combined emission of a first ray and a second ray when an optical element with a cutoff line structure is provided in an embodiment of this application;

[0038] Figure 8 A schematic diagram of the light pattern formed by the single emission of a first ray when an optical element with a cutoff line structure is provided in a low beam illumination device according to an embodiment of this application;

[0039] Figure 9 The near beam pattern formed by the combined emission of a first ray, a second ray, and a fourth ray when an optical element with a cutoff line structure is provided in the near beam illumination device provided in the embodiments of this application;

[0040] Figure 10 The light pattern formed by the fourth ray emitted alone when an optical element with a cutoff line structure is provided in a low beam illumination device provided in this application embodiment;

[0041] Figure 11 A schematic diagram of the optical path of a high beam lighting device provided in an embodiment of this application;

[0042] Figure 12The beam pattern of the high beam illumination device when no optical elements are installed;

[0043] Figure 13 This application provides a schematic diagram of the high beam pattern of a high beam lighting device equipped with optical elements.

[0044] Figure 14 This is one of the structural schematic diagrams of an integrated high and low beam lighting device provided in the embodiments of this application;

[0045] Figure 15 A second schematic diagram of a high and low beam integrated lighting device provided in this application embodiment;

[0046] Figure 16 A third schematic diagram of a high and low beam integrated lighting device provided in this application embodiment;

[0047] Figure 17 A schematic diagram of the low beam optical path of an integrated high and low beam lighting device provided in this application embodiment;

[0048] Figure 18 A schematic diagram of the high beam optical path of an integrated high and low beam lighting device provided in this application embodiment;

[0049] Figure 19 A schematic diagram of another integrated high and low beam lighting device provided in this application embodiment;

[0050] Figure 20 A schematic diagram of the high beam optical path of another integrated high and low beam lighting device provided in this application embodiment;

[0051] Figure 21 This application provides an embodiment of a near beam emission module that generates a near beam pattern with a bright and dark cutoff line.

[0052] Figure 22 This application provides an embodiment of a high-beam beam pattern formed by the emitted beam from a high-beam beam emission module.

[0053] Figure 23 The illumination pattern formed by the high and low beam integrated lighting device provided in the embodiments of this application.

[0054] Icons: 110 - Light source; 120 - Reflector; 130 - Optical element; 131 - First reflecting surface; 132 - Second reflecting surface; 133 - Third reflecting surface; 134 - Cutoff line structure; 140 - Collimating element; 141 - Focal point of collimating element; 150 - Heat sink; 160 - Circuit board; 171 - First ray; 172 - Fourth ray; 173 - Third ray; 180 - High beam output module; 181 - High beam source; 182 - High beam reflector; 210 - Coincident focal point position. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. It should be noted that, in the absence of conflict, the various features in the embodiments of this application can be combined with each other, and the combined embodiments are still within the protection scope of this application.

[0056] In the description of this application, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "perpendicular" and "parallel" do not mean absolutely perpendicular or parallel, but can be approximately perpendicular or approximately parallel.

[0057] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0058] It should be understood that, for ease of description and simplification, the terms "front" and "rear" refer to the front-rear direction of the lighting device along the light emission direction, the terms "left" and "right" refer to the left-right direction of the lighting device itself, and the terms "up" and "down" refer to the up-down direction of the lighting device itself, which are generally roughly the same as the front-rear, left-right, up-down directions of a vehicle; the terms are based on the orientation or positional relationship shown in the accompanying drawings, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application; moreover, the orientation terms of the lighting device in this application should be understood in conjunction with the actual installation state.

[0059] In this application, the light pattern refers to the projection shape of the light from the vehicle headlights onto a light distribution screen located 25m directly in front of the vehicle, and the cutoff line refers to the boundary line where the light is projected onto the light distribution screen and the visually perceived change in brightness is significant.

[0060] One aspect of this application provides a light-emitting module, which includes an optical element disposed in an optical path. The first reflective surface of the optical element is used to improve the utilization rate of the light source, thereby effectively increasing the light output brightness of the light-emitting module. The embodiments of this application will be described below with reference to the accompanying drawings.

[0061] Please refer to Figures 1 to 3 The diagram illustrates a light-emitting module comprising a light source 110, a reflector 120, an optical element 130 having a first reflective surface 131, and a collimating element 140 arranged sequentially along the optical path. Please refer to the reference [reference needed]. Figure 4 Light rays emitted from the light source 110 are incident on the reflector 120. After primary modulation by the reflector 120, they are reflected to the collimating element 140 and the first reflecting surface 131 of the optical element 130, respectively. The first reflecting surface 131 is located above or on the top surface of the optical element 130. Specifically, a portion of the reflected light rays from the light source 110 (i.e., the first ray 171) directly enters the first reflecting surface 131 and is reflected by the first reflecting surface 131 to the collimating element 140, thus making good use of a portion of the light rays that would otherwise not be able to enter the collimating element 140. The main optical path portion of the light rays from the light source 110 reflected by the reflector 120 (i.e., the second ray) directly enters the collimating element 140. Thus, the first ray 171 and the second ray can be combined and emitted from the collimating element 140 to form a first light pattern. The first ray 171 alone can form a portion of the first light pattern (e.g., ...). Figure 8 As shown), the second ray emitted alone from the collimating element 140 can form a portion of the first ray pattern (as shown). Figure 7 As shown), the two are superimposed to obtain the first light pattern.

[0062] In summary, by setting an optical element 130 with a first reflective surface 131, the utilization rate of the light source 110 reflected by the reflector 120 can be improved, so that a first light 171 is added on the basis of the second light ray, thereby resulting in a light pattern formed by the light module with higher brightness, which is especially beneficial for improving the illumination brightness of the module based on the narrow light output aperture size.

[0063] Optional, such as Figures 1 to 3 as well as Figure 5 As shown, the optical element 130 also has a second reflecting surface 132 on the side near the reflector 120 (e.g., in...). Figures 1 to 3 as well as Figure 5In this configuration, the top or upper surface of the optical element 130 serves as the first reflecting surface 131, and the side of the optical element 130 near the reflector 120 serves as the second reflecting surface 132. Specifically, a portion of the reflected light from the light source 110 (i.e., the first ray 171) directly enters the first reflecting surface 131 and is reflected by the first reflecting surface 131 to the collimating element 140, thus making good use of a portion of the light that would otherwise not have entered the collimating element 140; a portion of the reflected light from the light source 110 (i.e., the fourth ray 172) directly enters the second reflecting surface 131, is reflected by the second reflecting surface 132 to the reflecting mirror 120, and after being modulated by the reflecting mirror 120, is reflected to the collimating element 140, further making good use of another portion of the light that would otherwise not have entered the collimating element 140; and the main optical path portion of the light from the light source 110 reflected by the reflecting mirror 120 (i.e., the second ray) directly enters the collimating element 140. Thus, the first ray 171, the fourth ray 172, and the second ray can be combined and emitted from the collimating element 140 to form a second light pattern (e.g., ...). Figure 9 As shown), the first ray 171, emitted alone from the collimating element 140, can form a portion of the second ray pattern (as shown). Figure 8 As shown), the fourth ray 172, emitted alone from the collimating element 140, can form part of the second ray pattern (as shown). Figure 10 As shown), the second ray emitted alone from the collimating element 140 can form the first ray pattern (as shown). Figure 7 As shown), the three are superimposed to obtain the second light pattern (as shown). Figure 9 (As shown). Therefore, by utilizing the second reflective surface 132 of the optical element 130, the utilization rate of the light source 110 can be further improved, thereby further enhancing the illumination brightness of the light-emitting module.

[0064] Optional, such as Figure 4 , Figure 11 As shown, the second reflective surface 132 can also serve as a light-shielding surface. In this case, the light emitted from the light source 110 may also include a third ray 173 that can be disregarded. The third ray 173 may be stray light directly emitted from the light source 110 to the collimating element 140. To prevent the third ray 173 from forming stray light that affects the light output quality after exiting through the collimating element 140, the light-shielding surface on the optical element 130 can be used to block the third ray 173, preventing it from directly exiting from the light source 110 to the collimating element 140. Specifically, the light-shielding surface can be an absorbing surface or a reflective surface. For example, if the light-shielding surface is an absorbing surface, the third ray 173 directly emitted from the light source 110 is absorbed by the light-shielding surface on the optical element 130; or, if the light-shielding surface is a reflective surface, the third ray 173 emitted from the light source 110 is reflected by the reflective surface and then emitted through the reflector 120 to the collimating element 140.

[0065] Optional, such as Figures 14 to 16 As shown, the optical element 130 and the reflector 120 are integrally formed, and the first reflecting surface 131 can serve as a light-shielding surface. At this time, the light source 110 emits light towards the reflector 120, and the light rays from the light source 110 reflected by the reflector 120 include those incident on the first reflecting surface 131 (e.g., light emitted from the light source 110). Figure 14 or Figure 16 The first reflecting surface 131 (which may be located above or on the top surface of the optical element 130) and the first ray 171 and the second ray incident on the collimating element 140 are combined. Figure 17 As shown, the first ray 171, after being reflected by the first reflecting surface 131, combines with the second ray and exits from the collimating element 140 to form the first light pattern. Based on this, the light emitted from the light source 110 may also include a third ray 173 that may be unusable. The third ray 173 may be stray light directly emitted from the light source 110 to the collimating element 140. To avoid the third ray 173 forming stray light after exiting through the collimating element 140 and affecting the light output quality of the light-emitting module, such as... Figure 17 As shown, the third ray 173 can also be reflected by the first reflecting surface 131, thereby blocking the third ray 172 by the decorative ring of the light-emitting module, preventing it from being emitted through the collimating element 140. Alternatively, the first reflecting surface 131 can be configured as a light-absorbing surface to absorb the third ray 172. Thus, the purpose of changing the optical path of the third ray 173 by the first reflecting surface 131 is achieved.

[0066] Optionally, the optical element 130 can be a separate component that is fixed to surrounding components through assembly, for example in... Figures 1 to 3 In the example, optical element 130 has a plate-like structure; for example, in Figure 19 and Figure 20 In this design, optical element 130 has an irregular structure; furthermore, optical element 130 can also be an integrated structure that integrates with other surrounding devices. For example, in... Figure 5 In this configuration, optical element 130 is integrated with heat sink 150 (used to dissipate heat from light source 110 and related electronic equipment, such as circuit board 160 supporting light source 110). Heat sink 150 typically uses a high thermal conductivity material. Thus, the heat absorbed by the light-shielding surface by the third ray 173 can be dissipated through heat sink 150, preventing the temperature of the light-shielding surface from exceeding the material's tolerance range. Furthermore, when the first reflecting surface 131 is near the boundary of collimating element 140 as a cutoff line structure 134, the focal point of sunlight after passing through collimating element 140 is at or near the cutoff line structure 134, and the heat sink 150 can also dissipate heat from the sunlight. For example, in... Figure 14 and Figure 16In this design, optical element 130 is integrated with mirror 120. It should be noted that "near the cutoff line structure 134" refers to the area within 2mm around the cutoff line structure.

[0067] Optionally, the collimating element 140 can be a lens or a light-emitting reflector. After the light from the light source 110 is modulated by the reflector 120 and the optical element 130, it is transmitted through the lens and then emitted or reflected by the light-emitting reflector to form an emitted light pattern.

[0068] Optionally, in order for the reflector 120 to perform primary modulation of the incident light source 110, the surface shape of the reflector 120 can be any one of a parabola, a parabolic-like surface, an ellipsoid, or an ellipsoid-like surface. A parabolic-like surface refers to a curved surface that is similar to a parabola, and an ellipsoid-like surface refers to a curved surface that is similar to an ellipsoid, having similar optical properties. This application does not specifically limit it, as long as the light rays emitted through the reflector 120 can be emitted as parallel or approximately parallel light rays.

[0069] The light source 110 is positioned at the focal point of a parabolic or parabolic-like surface, or at the first focal point of an ellipsoid or ellipsoidal surface, so that the diverging light emitted by the light source 110 is converted into nearly parallel light rays that are projected onto the collimating element 140, thereby achieving the effect of narrow-aperture light emission. The second focal point of the ellipsoid or ellipsoidal surface is located on the side of the optical element 130 closer to the collimating element 140, preferably at the light-receiving surface of the collimating element 140 (such as the incident surface of a lens or the reflecting surface of an exiting mirror), so that the light rays reflected by the ellipsoid or ellipsoidal surface converge at the light-receiving surface of the collimating element 140, thereby minimizing the area of ​​the light-receiving surface of the collimating element 140.

[0070] The light-emitting module provided in this application can be used in lighting devices. The light-emitting module can be any module in the lighting device, such as high beam, low beam, auxiliary high beam, corner light, fog light, etc. When the lighting device includes multiple light-emitting modules, it can realize a variety of lighting functions such as low beam and high beam, low beam and ADB high beam, main low beam and auxiliary low beam. According to different lighting functions, the lighting device can be divided into low beam lighting device, high beam lighting device, high beam and low beam integrated lighting device, etc. This application does not make specific limitations on them.

[0071] By applying the aforementioned light-emitting module, the light output brightness of the lighting device can be effectively improved, enabling the lighting device to achieve high illumination brightness based on a narrow light-emitting aperture size. For ease of description, the low beam lighting device, high beam lighting device, and integrated high and low beam lighting device will be described schematically below with reference to the accompanying drawings.

[0072] Another aspect of the embodiments of this application provides a low beam lighting device, such as... Figures 1 to 3 ,or Figure 5As shown, it includes at least one light-emitting module, which includes the aforementioned light source 110, reflector 120, optical element 130, and collimating element 140. To enable the near-beam illumination device to form an illumination pattern with a cutoff line, modulation can be achieved through the optical element 130. For example, the first reflective surface 131 of the optical element 130 near the boundary of the collimating element 140 can form a cutoff line structure 134, and the focal point of the collimating element 140 is correspondingly located at or near the cutoff line structure 134. Thus, as... Figure 6 The image shows the low beam pattern formed when the low beam illumination device does not have an optical element 130 with a cutoff line structure 134. This beam pattern lacks a clear cutoff line and therefore does not meet regulatory requirements. Figure 7 As shown, when an optical element 130 with a cutoff line structure 134 is provided for a low beam illumination device, the low beam pattern (i.e., the first beam pattern) formed by the emission of the second light ray is described. At this time, the low beam pattern has a light and dark cutoff line; as shown... Figure 8 As shown, when an optical element 130 with a cutoff line structure 134 is provided for a low beam illumination device, the light pattern formed by the first ray 171 emanating alone is also shown. At this time, the light pattern also has a light and dark cutoff line; as shown... Figure 9 As shown, when an optical element 130 with a cutoff line structure 134 is provided for a low beam illumination device, the low beam pattern (i.e., the second beam pattern) formed by the combined emission of the first ray 171, the second ray, and the fourth ray 172 is also provided. At this time, the beam pattern also has a cutoff line for both light and dark areas; as shown... Figure 10 As shown, when an optical element 130 with a cutoff line structure 134 is provided for a low beam illumination device, the light pattern formed by the fourth ray 172 emanating alone is also shown. At this time, the light pattern also has a light and dark cutoff line.

[0073] Optionally, the cutoff line structure 134 may include multiple sequentially connected sub-cutoff lines, with at least two adjacent sub-cutoff lines having an included angle. That is, the cutoff line structure 134 formed on the optical element 130 may have multiple inflection points, for example... Figures 1 to 3 The diagram shows that the first reflecting surface 131 includes a first sub-surface and a second sub-surface with a height difference, and a third sub-surface connecting the first and second sub-surfaces, such that the cutoff line structure 134 near the boundary of the three sub-surfaces near the reflector 120 has two inflection points.

[0074] Optionally, the connection between the two sub-cutoff lines with an angle is curved to create a smoother gradient between the light and dark cutoff lines.

[0075] Optionally, the optical element 130 also includes a third reflecting surface 133 disposed near the collimating element 140. The third reflecting surface 133 is connected to the first reflecting surface 131, and the junction of the two is the cutoff line structure 134. A region III structure is provided on the third reflecting surface 133, so that light passing through the region III structure and being projected by the collimating element 140 forms a near-light region III light pattern.

[0076] Optionally, when the low beam illumination device includes a single light-emitting module, it can serve as either a main low beam module or an auxiliary low beam module, and the corresponding emitted light pattern is also either the main low beam pattern or the auxiliary low beam pattern. When the low beam illumination device includes multiple light-emitting modules, at least one of them can serve as the main low beam module, while the others can serve as auxiliary low beam modules. Thus, the light patterns emitted by the main low beam module and the auxiliary low beam modules combine to form the low beam pattern. The main low beam pattern is the central area of ​​the low beam pattern, with high illuminance, while the auxiliary low beam pattern is the extended area of ​​the low beam pattern, ensuring that the left and right illumination range of the low beam pattern meets the requirements.

[0077] In another aspect of the embodiments of this application, a high beam lighting device is provided, including at least one light-emitting module, that is, when the light-emitting module is used as a high beam light-emitting module 180, such as Figure 11 As shown, the light-emitting module includes a light source 110, a reflector 120, an optical element 130, and a collimating element 140. At this time, the focal point 141 of the collimating element is set at or near the boundary of the reflector 120 near the light source 110. Thus, the lower boundary gradient of the high beam pattern can be adjusted by the first reflecting surface 131 of the optical element 130, so that the lower boundary gradient of the high beam pattern is softer, making it easier for it to connect with the low beam pattern more smoothly without obvious bright and dark boundaries.

[0078] like Figure 12 As shown, the high beam pattern is displayed when the high beam illumination device does not have optical element 130, where the lower boundary gradient of the high beam pattern is relatively sharp; in contrast, as shown... Figure 13 As shown, the high beam pattern is provided with optical element 130 in the high beam lighting device. It can be seen that by adjusting the optical element 130, a portion of the energy above the cutoff line of brightness and darkness can be mirrored to the lower boundary of the blurred high beam pattern, thereby making the lower boundary gradient of the high beam pattern more gentle.

[0079] Optionally, the high beam illumination device includes multiple light-emitting modules connected in sequence as described above. For example, the reflecting surface of the low beam reflector can be a parabolic, parabolic-like, ellipsoidal, or ellipsoidal surface, and the collimating element 140 can be multiple lenses connected in sequence, with the incident and emitting surfaces of the lenses respectively achieving unidirectional collimation of the light rays. The combined light patterns emitted from the multiple sequentially connected light-emitting modules form the final high beam pattern.

[0080] Another aspect of the embodiments of this application provides a high and low beam integrated lighting device, such as... Figures 14 to 18 or Figures 19 to 20 As shown, it includes a low beam output module and a high beam output module 180, wherein the low beam output module is any of the above-mentioned output modules. Of course, in other embodiments, the low beam output module and the high beam output module 180 can be interchanged, that is, the high beam output module 180 can be any of the above-mentioned output modules.

[0081] Optional, such as Figures 14 to 18 As shown, when the near beam output module is the aforementioned output module, the output module includes a light source 110, a reflector 120, an optical element 130, and a collimating element 140. The light source 110 and the optical element 130 can be arranged opposite to each other. In this case, the optical element 130 also includes a third reflecting surface 133 disposed near the collimating element 140. Figure 17 As shown, for the near-beam optical path: the first ray 171 emitted from the light source 110 is reflected by the mirror 120, then reflected again by the first reflecting surface 131, and then enters the collimating element 140. The second ray emitted from the light source 110 is reflected by the mirror 120 and then directly enters the collimating element 140. Thus, the first ray 171 and the second ray can be combined and emitted through the collimating element 140 to form the near-beam optical pattern; as shown... Figure 18 As shown, for the high beam optical path: the high beam output module 180 emits high beam light towards the third reflective surface 133 of the optical element 130. After being reflected by the third reflective surface 133, the high beam light is emitted through the collimating element 140 to form the high beam pattern.

[0082] Optional, such as Figures 14 to 18 As shown, the high beam output module 180 includes a high beam source 181 and a high beam reflector 182. The high beam light emitted from the high beam source 181 is modulated by the high beam reflector 182 before being emitted as the high beam light emitted from the high beam output module 180. The surface shape of the high beam reflector 182 can be any one of a parabola, a parabolic-like surface, an ellipsoid, or a ellipsoid-like surface. A parabolic-like surface refers to a surface approximating a parabola, and an ellipsoid-like surface refers to a surface approximating an ellipsoid, possessing similar optical properties. This application does not specifically limit its shape, as long as the light emitted by the high beam reflector 182 can be emitted as parallel or approximately parallel light. Optionally, one focal point of the high beam reflector 182 can coincide with the focal point of the third reflecting surface 133, thereby avoiding obstruction of the low beam path by the high beam output module 180. For example... Figure 19 and Figure 20As shown, the surface of the high beam reflector 182 is an ellipsoid. A high beam source 181 can be set at its near focal point. Its far focal point can coincide with the focal point of the third reflecting surface 133. That is, at this time, the high beam source 181 emits high beam light to the high beam reflector 182, and after being reflected by the high beam reflector 182, it enters the third reflecting surface 133 at the coincident focal point position 210. Then, after being reflected by the third reflecting surface 133, it exits from the collimating element 140 to form a high beam light pattern.

[0083] Optionally, the third reflecting surface 133 can be a plane or a curved surface. When it is a curved surface, it can modulate the incident light rays, for example, to collimate them in the horizontal and / or vertical directions. For example... Figure 1 As shown, the third reflecting surface 133 is a plane, and for example... Figure 19 As shown, the third reflecting surface 133 is a parabolic surface.

[0084] Optional, such as Figures 19 to 20 As shown, the system includes a low beam output module and a high beam output module 180, with the low beam output module being any of the aforementioned output modules. The third reflecting surface 133 is a parabolic surface, and a cutoff line structure 134 is formed at the junction of the third reflecting surface 133 and the first reflecting surface 131. Further, the reflecting surface of the low beam reflector is a parabolic, parabolic-like, ellipsoidal, or ellipsoidal-like surface, while the reflecting surface of the high beam reflector is an ellipsoidal or ellipsoidal-like surface. A light source is located at the first focal point of the high beam reflector, and the second focal point coincides with the focal point of the low beam reflector. The focal point of the collimating element is located near the inflection point of the cutoff line structure 134.

[0085] Therefore, as Figure 21 As shown, this is the near beam pattern with a bright and dark cutoff line formed by the near beam output module, such as... Figure 22 As shown, this is the beam pattern of the high beam emitted by the 180° high beam output module, as follows: Figure 23 As shown, this is the lighting pattern formed by an integrated high and low beam lighting device (that is, the low beam pattern and the high beam pattern are connected near the light-dark cutoff line).

[0086] Optionally, the sub-cutoff line connection of the cutoff line structure 134 has an arc transition, that is, the corners are rounded at the connection. This makes the gradient of the light and dark cutoff lines softer, facilitating the connection between the high beam and low beam patterns. In another aspect, this application provides a vehicle lamp, including any of the above-described low beam lighting devices, or any of the above-described high beam lighting devices, or any of the above-described integrated high and low beam lighting devices. The vehicle lamp of this application can be applied to vehicles such as bicycles, motorcycles, automobiles, ships, and aircraft; this application does not limit its application to these vehicles.

[0087] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lighting device integrating high and low beams, characterized in that, It includes a low beam output module and a high beam output module, wherein the low beam output module or the high beam output module is an output module; The light-emitting module includes a light source, a reflector, an optical element, and a collimating element arranged sequentially along the optical path. The optical element has a first reflective surface, which is located on the top or upper surface of the optical element. The light emitted by the light source is reflected by the reflector and then enters the optical element as a first ray and the collimating element as a second ray. The first reflective surface is used to reflect the first ray to the collimating element so that it can be combined with the second ray to form a first light pattern. When the near beam output module is a light output module, the optical elements of the light output module further include a third reflecting surface disposed near the collimating element of the light output module. The third reflecting surface is provided with a III-zone structure, so that light rays pass through the III-zone structure and are projected by the collimating element to form a near beam III-zone light pattern. The far beam output module emits far beam light rays to the third reflecting surface, and is reflected by the third reflecting surface to the collimating element to form a far beam light pattern. The far beam output module includes a far beam light source and a far beam reflector, and one focal point of the far beam reflector coincides with the focal point of the third reflecting surface. When the high beam output module is a light output module, the optical element of the light output module also includes a third reflecting surface disposed near the collimating element of the light output module. The low beam output module emits low beam light to the third reflecting surface, and is reflected by the third reflecting surface to the collimating element to form a low beam pattern. The focal point of the collimating element is disposed at the boundary of the reflector near the light source. The first light ray is formed at the lower boundary of the first beam pattern after being emitted by the collimating element.

2. The integrated high and low beam lighting device as described in claim 1, characterized in that, The optical element has a second reflective surface on the side near the reflector. Part of the light emitted by the light source is incident on the second reflective surface, reflected by the second reflective surface towards the reflector, and after being reflected by the reflector, a fourth ray is incident on the collimating element. The first ray, the second ray, and the fourth ray are combined and emitted to form a second light pattern.

3. The integrated high and low beam lighting device as described in claim 1, characterized in that, The optical element has a second reflective surface on the side near the reflector. The second reflective surface is a light-shielding surface. Unusable third rays emitted by the light source are absorbed or reflected by the second reflective surface to the reflector and then reflected by the reflector to the collimating element before being emitted.

4. The integrated high and low beam lighting device as described in claim 1, characterized in that, The optical element and the reflector are integrally formed. The first reflective surface is a light-shielding surface. The unusable third light emitted by the light source is absorbed or reflected by the first reflective surface to the decorative ring of the light-emitting module and is blocked.

5. The integrated high and low beam lighting device as described in claim 1, characterized in that, The collimating element is a lens or a light-emitting reflector. The light emitted by the light source is modulated by the reflector and the optical element, and then projected by the lens or reflected by the light-emitting reflector to form a light pattern.

6. The integrated high and low beam lighting device as described in claim 1, characterized in that, The reflector has a surface shape that is any one of a parabola, a parabolic-like surface, an ellipsoid, or a ellipsoid; the light source is located at the first focal point of the ellipsoid or ellipsoid, and the second focal point is located on the side of the optical element closer to the collimating element.

7. The integrated high and low beam lighting device as described in claim 1, characterized in that, When the near beam output module is a light output module, the first reflective surface of the optical element forms a cutoff line structure near the boundary of the collimating element, and the focal point of the collimating element is set at the cutoff line structure or within 2 mm around the cutoff line structure.

8. The integrated high and low beam lighting device as described in claim 7, characterized in that, The cutoff line structure includes multiple sequentially connected sub-cutoff lines, and at least two adjacent sub-cutoff lines have an included angle.

9. The integrated high and low beam lighting device as described in claim 8, characterized in that, The connection between the two sub-cutoff lines with an included angle has an arc transition.

10. The integrated high and low beam lighting device as described in claim 7, characterized in that, The light-emitting module is either the main low beam module or the auxiliary low beam module.

11. The integrated high and low beam lighting device as described in claim 1, characterized in that, When the high beam output module is a light output module, the low beam output module includes a low beam source and a low beam reflector, and one focal point of the low beam reflector coincides with the focal point of the third reflective surface.

12. The integrated high and low beam lighting device as described in any one of claims 1 to 11, characterized in that, The junction of the third reflecting surface and the first reflecting surface forms a cutoff line structure, and the focal point of the collimating element is located at the cutoff line structure.

13. The integrated high and low beam lighting device as described in claim 1, characterized in that, The third reflecting surface is either a plane or a curved surface.

14. A vehicle light, characterized in that, Includes the integrated high and low beam lighting device as described in any one of claims 1 to 13.

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