WO2024164527A1 - Light-emitting module, low-beam lighting apparatus, high-beam lighting apparatus, integrated high-beam and low-beam lighting apparatus and vehicle lamp - Google Patents

Abstract

A light-emitting module, comprising a light source (110), a reflector (120), an optical element (130) and a collimating element (140), which are sequentially arranged along an optical path. The optical element (130) has a first reflective surface (131), which is located on an upper surface or a top surface of the optical element (130). Light emitted by the light source (110) is reflected by the reflector (120) and is then respectively incident on the optical element (130) as first light (171) and incident on the collimating element (140) as second light. The first reflective surface (131) is used for reflecting the first light (171) to the collimating element (140), so that the first light and the second light are combined and emitted to form a first light shape. The light-emitting module can be applied to lighting apparatuses. According to different lighting functions, the lighting apparatuses can be divided into low-beam lighting apparatuses, high-beam lighting apparatuses and integrated high-beam and low-beam lighting apparatuses.

Description

Light output module and low beam, high beam, high and low beam integrated lighting device, car lights

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of Chinese patent application number 2023100994482 filed with the Chinese Patent Office on February 9, 2023, and entitled "Light output module and low beam, high beam, high and low beam integrated lighting device, car light", the entire contents of which are incorporated by reference in this application.

Technical Field

The present application relates to the technical field of vehicle lamps, and in particular to a light output module, a low beam, a high beam, and a high and low beam integrated lighting device, and a vehicle lamp.

Background Art

With the development of social economy, the automobile industry has also developed accordingly. With the continuous development of automobile lighting technology, more requirements have been put forward for the functions of car lights. In the lighting device that realizes the lighting function of car lights, a light output module is usually set to realize various light output shapes, thereby obtaining a better lighting effect.

In order to meet the diverse needs of actual use, many light output modules are designed and developed based on narrow light output port sizes. However, due to the limitation of the light output port size, the light output brightness is difficult to meet the needs.

Application Contents

The purpose of the present application is to provide a light output module and a low beam, high beam, and high and low beam integrated lighting device and a vehicle lamp in response to the deficiencies in the above-mentioned prior art.

To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

In one aspect of an embodiment of the present application, a light output module is provided, comprising a light source, a reflector, an optical element and a collimating element arranged in sequence along an optical path, the optical element having a first reflective surface, the first reflective surface being located above or on the top surface of the optical element, the light emitted by the light source being reflected by the reflector and incident on the optical element as a first light ray and on the collimating element as a second light ray, the first reflective surface being used to reflect the first light ray to the collimating element so as to be combined with the second light ray to form a first light shape.

Optionally, the optical element has a second reflecting surface on one side close to the reflector, and part of the light emitted by the light source is incident on the second reflecting surface, reflected toward the reflector by the second reflecting surface, and after reflection by the reflector, it is incident on the collimating element as a fourth light ray, and the first light ray, the second light ray and the fourth light ray are combined to emit to form a second light shape.

Optionally, the optical element has a second reflecting surface on one side close to the reflector, and the second reflecting surface is a light shielding surface. Unusable third light emitted by the light source is absorbed by the second reflecting surface or reflected toward the reflector and then reflected toward the collimating element by the reflector before being emitted.

Optionally, the optical element and the reflector are integrally formed, the first reflective surface is a light-shielding surface, and the unusable third light emitted by the light source is absorbed by the first reflective surface or reflected toward the decorative ring of the light output module and blocked.

Optionally, the collimating element may be 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 emitted after being projected by the lens or reflected by the light-emitting reflector to form an emitting light shape.

Optionally, the reflector has a surface shape of any one of a parabola, a quasi-parabola, an ellipsoid or a quasi-ellipsoid; a light source is arranged at a first focus of the ellipsoid or the quasi-ellipsoid, and a second focus is located on a side of the optical element close to the collimating element.

According to another aspect of an embodiment of the present application, a low-beam lighting device is provided, comprising at least one light output module of any one of the above-mentioned types, the light output module comprising a light source, a reflector, an optical element and a collimating element, the first reflecting surface of the optical element being close to a boundary of the collimating element forming a cutoff line structure, and the focus of the collimating element being arranged at or near the cutoff line structure.

Optionally, the cut-off line structure includes a plurality of sequentially connected sub-cut-off lines, and at least two adjacent sub-cut-off lines have an included angle.

Optionally, the connection between the two sub-cut-off lines with an included angle is arc-shaped transition.

Optionally, the optical element further includes a third reflecting surface arranged close to the collimating element, and a zone III structure is arranged on the third reflecting surface, so that the light passes through the zone III structure and is projected by the collimating element to form a low beam zone III light shape.

Optionally, the light output module is a main low beam module or an auxiliary low beam module.

Optionally, the light output module further includes a heat sink for dissipating heat from the light source of the light output module, and the optical element is connected to the heat sink;

Alternatively, when the optical element is arranged opposite to the light source of the light output module, the optical element is connected to a side of the reflector close to the collimating element.

In another aspect of the embodiments of the present application, a high beam lighting device is provided, comprising at least one light output module of any one of the above-mentioned types, the light output module comprising a light source, a reflector, an optical element and a collimating element, the focus of the collimating element being arranged at or near the boundary of the reflector close to the light source.

According to another aspect of the embodiments of the present application, a high and low beam integrated lighting device is provided, comprising a low beam light emitting module and a high beam light emitting module, wherein the low beam light emitting module or the high beam light emitting module is any one of the light emitting modules mentioned above.

Optionally, when the low beam light output module is the light output module, the optical element of the light output module also includes a third reflective surface arranged close to the collimating element of the light output module, and the high beam light output module emits high beam light to the third reflective surface, and is reflected by the third reflective surface to the collimating element to form a high beam light shape.

Optionally, the high beam light output module includes a high beam light source and a high beam reflector, a focus of the high beam reflector and a third reflector. The focal points of the incident surfaces coincide.

Optionally, when the high beam light emitting module is a light emitting module, the light emitting module includes an optical element and a collimating element, the optical element also includes a third reflecting surface arranged close to the collimating element, the low beam light emitting 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 light shape.

Optionally, the low beam light emitting module includes a low beam light source and a low beam reflector, and a focus of the low beam reflector coincides with the focus of the third reflective surface.

Optionally, a cut-off line structure is formed at the junction of the third reflecting surface and the first reflecting surface, and the focus of the collimating element is set at or near the cut-off line structure.

Optionally, the third reflecting surface is a plane or a curved surface.

According to another aspect of the embodiments of the present application, a vehicle lamp is provided, comprising any one of the above-mentioned low beam lighting devices, or any one of the above-mentioned high beam lighting devices, or any one of the above-mentioned high and low beam integrated lighting devices.

The beneficial effects of this application include:

The present application provides a light output module and a low beam, high beam, and high and low beam integrated lighting device, and a headlight, including a light source, a reflector, an optical element, and a collimating element arranged in sequence along the light path, the optical element having a first reflecting surface, the first reflecting surface being located above or on the top surface of the optical element, the light emitted by the light source being reflected by the reflector and incident on the optical element as a first light and the collimating element as a second light, respectively, the first reflecting surface being used to reflect the first light to the collimating element to be combined with the second light to form a first light shape. By providing an optical element having a first reflecting surface, the utilization rate of the light from the light source reflected by the reflector can be improved, so that the first light is added on the basis of the second light, so that the light shape formed by the light output module has a higher brightness, which is particularly beneficial for improving the lighting brightness of a module based on a narrow light outlet size.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic diagram of a structure of a light output module according to an embodiment of the present application;

FIG2 is a second schematic diagram of the structure of a light output module provided in an embodiment of the present application;

FIG3 is a third structural schematic diagram of a light output module provided in an embodiment of the present application;

FIG4 is a schematic diagram of a light path of a light output module provided in an embodiment of the present application;

FIG5 is a schematic diagram of the structure of another light output module provided in an embodiment of the present application;

FIG6 is a schematic diagram of a low beam light shape formed when the low beam lighting device is not provided with an optical element having a cut-off line structure;

7 is a schematic diagram of a low beam light shape formed by the combined emission of a first light ray and a second light ray when a low beam lighting device provided by an embodiment of the present application is provided with an optical element having a cut-off line structure;

FIG8 is a schematic diagram of a light shape formed when a first light beam is emitted alone when an optical element having a cut-off line structure is provided in a low-beam lighting device provided in an embodiment of the present application;

FIG9 is a low beam light shape formed by the combined emission of a first light ray, a second light ray and a fourth light ray when a low beam lighting device provided by an embodiment of the present application is provided with an optical element having a cut-off line structure;

FIG10 is a light shape formed when a fourth light ray is emitted alone when an optical element having a cut-off line structure is provided in a low-beam lighting device provided in an embodiment of the present application;

FIG11 is a schematic diagram of a light path of a high-beam lighting device provided in an embodiment of the present application;

FIG12 is a high beam light shape when the high beam lighting device is not provided with an optical element;

FIG13 is a schematic diagram of a high beam light shape when a high beam lighting device provided by an embodiment of the present application is provided with an optical element;

FIG14 is a schematic diagram of a high and low beam integrated lighting device according to an embodiment of the present application;

FIG15 is a second structural schematic diagram of a high and low beam integrated lighting device provided in an embodiment of the present application;

FIG16 is a third structural schematic diagram of a high and low beam integrated lighting device provided in an embodiment of the present application;

FIG17 is a schematic diagram of a low beam light path of a high and low beam integrated lighting device provided in an embodiment of the present application;

FIG18 is a schematic diagram of a high beam light path of a high and low beam integrated lighting device provided in an embodiment of the present application;

FIG19 is a schematic structural diagram of another high and low beam integrated lighting device provided in an embodiment of the present application;

FIG20 is a schematic diagram of a high beam light path of another high and low beam integrated lighting device provided in an embodiment of the present application;

FIG21 is a low beam light shape with a bright and dark cut-off line formed by a low beam light output module provided in an embodiment of the present application;

FIG22 is a high beam light shape formed by a high beam light output module provided in an embodiment of the present application;

FIG. 23 is a diagram showing the lighting light pattern formed by the high and low beam integrated lighting device provided in an embodiment of the present application.

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-focus of the collimating element; 150-heat sink; 160-circuit board; 171-first light ray; 172-fourth light ray; 173-third light ray; 180-high-beam light output module; 181-high-beam light source; 182-high-beam reflector; 210-coinciding focus position.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. It should be noted that, in the absence of conflict, the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the scope of protection of the present application.

In the description of this application, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. The terms "vertical" and "parallel" do not mean absolutely vertical or parallel, but can be approximately vertical or approximately parallel.

In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

It should be understood that, in order to facilitate the description of the present application and simplify the description, the terms "front and rear" refer to the front and rear directions of the lighting device along the light-emitting direction, the terms "left and right" refer to the left and right directions of the lighting device itself, and the terms "up and down" refer to the up and down directions of the lighting device itself, which are usually roughly the same as the front, back, left, right, up and down directions of the 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application; moreover, the orientation terms for the lighting device of the present application should be understood in conjunction with the actual installation status.

In this application, the light output shape refers to the projection shape of the light from the headlights on the light distribution screen 25m away from the front of the vehicle, and the cut-off line refers to the dividing line where the light is projected onto the light distribution screen and the visual perception of the significant change in brightness changes.

In one aspect of an embodiment of the present application, a light output module is provided, which includes an optical element arranged in an optical path, and utilizes a first reflective surface of the optical element to improve the utilization rate of light from the light source, thereby effectively improving the light output brightness of the light output module. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

Please refer to Figures 1 to 3, which show a light output module, which includes a light source 110, a reflector 120, an optical element 130 having a first reflective surface 131, and a collimating element 140, which are sequentially arranged along the light path. Please refer to Figure 4, the light source 110 emits light and enters the reflector 120, and after primary modulation by the reflector 120, it is reflected to the collimating element 140 and the first reflective surface 131 of the optical element 130 respectively. The first reflective surface 131 is located on the upper or top surface of the optical element 130. Specifically, a portion of the reflected light from the light source 110 (that is, the first light 171) directly enters the first reflective surface 131 and is reflected by the first reflective surface 131 to the collimating element 140, thereby making the light that was originally unable to enter the collimating surface 131 be reflected to the collimating element 140. A portion of the light from the element 140 is well utilized; and the main light path portion (i.e., the second light) of the light from the light source 110 reflected by the reflector 120 directly enters the collimating element 140, thereby, the first light 171 and the second light can be combined to be emitted from the collimating element 140 to form a first light shape, wherein the first light 171 emitted from the collimating element 140 alone can form a portion of the first light shape (as shown in FIG. 8 ), and the second light emitted from the collimating element 140 alone can form a portion of the first light shape (as shown in FIG. 7 ), and the two are superimposed to obtain the first light shape.

In summary, by providing an optical element 130 having a first reflective surface 131, the utilization rate of the light from the light source 110 reflected by the reflector 120 can be improved, so that the first light 171 is added on the basis of the second light, so that the light shape formed by the light output module has a higher brightness, which is particularly beneficial for improving the lighting brightness of the module based on the narrow light output port size.

Optionally, as shown in FIGS. 1 to 3 and 5 , the optical element 130 has a second reflecting surface 132 on one side close to the reflector 120 (for example, in FIGS. 1 to 3 and 5 , the upper surface or top surface of the optical element 130 serves as the first reflecting surface 131, and the side surface of the optical element 130 close to 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 light 171) directly enters the first reflecting surface 131, and is reflected by the first reflecting surface 131 to the collimating element 140, so that a portion of the light that was originally unable to enter the collimating element 140 is well utilized; a portion of the reflected light from the light source 110 (i.e., the fourth light 172) directly enters the second reflecting surface 131, is reflected by the second reflecting surface 132 to the reflector 120, and is reflected to the collimating element 140 after being modulated by the reflector 120, so that another portion of the light that was originally unable to enter the collimating element 140 is well utilized; and The main light path portion (i.e., the second light) of the reflected light from the light source 110 directly enters the collimating element 140, whereby the first light 171, the fourth light 172, and the second light can be combined to be emitted from the collimating element 140 to form a second light shape (as shown in FIG. 9), wherein the first light 171 emitted from the collimating element 140 alone can form a part of the second light shape (as shown in FIG. 8), the fourth light 172 emitted from the collimating element 140 alone can form a part of the second light shape (as shown in FIG. 10), and the second light emitted from the collimating element 140 alone can form the first light shape (as shown in FIG. 7), and the three are superimposed to obtain the second light shape (as shown in FIG. 9). Therefore, the utilization rate of the light from the light source 110 can be further improved by using the second reflecting surface 132 of the optical element 130, so that the illumination brightness of the light output module is further improved.

Optionally, as shown in FIG. 4 and FIG. 11 , the second reflecting surface 132 can also serve as a shading surface. At this time, the light emitted by the light source 110 can also include an unusable third light 173. The third light 173 may be stray light emitted directly from the light source 110 to the collimating element 140. In order to prevent the third light 173 from being emitted through the collimating element 140 to form stray light that affects the light output quality, the shading surface on the optical element 130 can be used to block the third light 173, so that it cannot be directly emitted from the light source 110 to the collimating element 140. Specifically, the shading surface can be a light-absorbing surface or a light-reflecting surface. For example, the shading surface is a light-absorbing surface, and the third light 173 directly emitted by the light source 110 is blocked by the shading surface on the optical element 130. Another example: the shading surface is a reflective surface, and the third light 173 emitted by the light source 110 is reflected by the reflective surface and then emitted through the reflector 120 toward the collimating element 140.

Optionally, as shown in FIGS. 14 to 16 , the optical element 130 and the reflector 120 are integrally formed, and the first reflective surface 131 can be used as a light shielding surface. At this time, the light source 110 emits light toward the reflector 120, and the light of the light source 110 reflected by the reflector 120 includes a first light 171 incident on the first reflective surface 131 (for example, in FIG. 14 or FIG. 16 , the first reflective surface 131 can be located above or on the top surface of the optical element 130) and a second light incident on the collimating element 140. As shown in FIG. 17 , the first light 171 is reflected by the first reflective surface 131 and combined with the second light to be emitted from the collimating element 140 to form a first light shape. On this basis, the light emitted by the light source 110 may also include the third light 173 which may not be used. The third light 173 may be the stray light emitted directly from the light source 110 to the collimating element 140. In order to prevent the third light 173 from being emitted through the collimating element 140 to form stray light and affect the light output quality of the light output module, as shown in FIG17 , the first reflecting surface 131 may be used to reflect the third light 173, so that the third light 172 is blocked by the decorative ring of the light output module, so that it cannot be emitted through the collimating element 140 in the end. Alternatively, the first reflecting surface 131 may also be set as a light absorbing surface to absorb the third light 172. Thus, the purpose of the first reflecting surface 131 changing the optical path of the third light 173 is achieved.

Optionally, the optical element 130 can be an independent component, which is fixed to surrounding devices by assembly. For example, in Figures 1 to 3, the optical element 130 is a plate-like structure; for example, in Figures 19 and 20, the optical element 130 is an irregular structure; in addition, the optical element 130 can also be an integrated structure integrated with other surrounding devices. For example, in FIG5 , the optical element 130 is integrated with a heat sink 150 (used to dissipate heat for the light source 110 and electronic devices related to the light source 110, such as a circuit board 160 carrying the light source 110). The heat sink 150 is usually made of a high thermal conductivity material, so that the heat absorbed by the shading surface when the third light 173 is irradiated can be dissipated through the heat sink 150, so as to avoid the shading surface temperature being too high and exceeding the tolerance range of the material. Moreover, when the first reflecting surface 131 is close to the boundary of the collimating element 140 as the cutoff line structure 134, the focusing point of the sunlight through the collimating element 140 is at the cutoff line structure 134 or near the cutoff line structure 134, and the heat sink 150 can also be used to dissipate heat for the sunlight. For another example, in FIG14 and FIG16 , the optical element 130 is integrated with the reflector 120. It should be noted that the vicinity of the cutoff line structure 134 refers to the range of 2 mm around the cutoff line structure.

Optionally, the collimating element 140 may 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 emitted after being transmitted through the lens or reflected by the light-emitting reflector to form a light-emitting light shape.

Optionally, in order to make the reflector 120 perform primary modulation on the incident light source 110, the reflector 120 may be made to have a surface shape of a parabola, a quasi-parabola, an ellipsoid, or a quasi-ellipsoid. A quasi-parabola refers to a curved surface similar to a parabola, and a quasi-ellipsoid refers to a curved surface similar to an ellipsoid. They have similar optical properties, and the present application does not make any specific restrictions thereon. As long as the light emitted by the reflector 120 can be parallel or quasi-parallel, Just shoot.

The light source 110 is arranged at the focus of a parabola or a quasi-parabola, or at the first focus of an ellipsoid or a quasi-ellipsoid, so that the divergent light emitted by the light source 110 is converted into nearly parallel light and projected toward the collimating element 140, thereby achieving the effect of emitting light from a narrow opening. The second focus of the ellipsoid or the quasi-ellipsoid is located on the side of the optical element 130 close to the collimating element 140, preferably at the light receiving surface of the collimating element 140 (such as the light incident surface of a lens or the reflecting surface of a light emitting reflector), so that the light reflected by the ellipsoid or the quasi-ellipsoid converges at the light receiving surface of the collimating element 140, thereby minimizing the light receiving surface area of the collimating element 140.

The light output module provided in the present application can be used in a lighting device, and the light output module can be used as any module such as high beam, low beam, auxiliary high beam, corner light, fog light, etc. in the lighting device. When the lighting device includes multiple light output modules, it can realize multiple lighting functions such as low beam and high beam, low beam and ADB high beam, main low beam and auxiliary low beam, etc. According to different lighting functions, the lighting device can be divided into a low beam lighting device, a high beam lighting device, a high and low beam integrated lighting device, etc., and the present application does not make any specific restrictions on it.

By applying the aforementioned light output module, the light output brightness of the lighting device can be effectively improved, so that the lighting device can have a higher lighting brightness based on the narrow light output port size. For the convenience of description, the following will schematically describe the low beam lighting device, the high beam lighting device and the high and low beam integrated lighting device respectively in conjunction with the accompanying drawings.

On the other hand, an embodiment of the present application provides a low-beam lighting device, as shown in FIGS. 1 to 3 or 5, including at least one light output module, the light output module including the aforementioned light source 110, reflector 120, optical element 130 and collimating element 140. In order to enable the low-beam lighting device to form a lighting light shape with a bright and dark cutoff line, modulation can be performed by the optical element 130. For example, a first reflecting surface 131 of the optical element 130 close to the boundary of the collimating element 140 can form a cutoff line structure 134, and the focus of the collimating element 140 is correspondingly arranged at or near the cutoff line structure 134. Therefore, as shown in FIG6 , the low beam light shape is formed when the low beam lighting device is not provided with the optical element 130 having the cut-off line structure 134, and the light shape does not have a bright and dark cut-off line and therefore does not meet the regulatory requirements; as shown in FIG7 , the low beam light shape (i.e., the first light shape) formed by the emission of the second light when the low beam lighting device is provided with the optical element 130 having the cut-off line structure 134, at this time, the low beam light shape has a bright and dark cut-off line; as shown in FIG8 , the first light 171 is formed when the low beam lighting device is provided with the optical element 130 having the cut-off line structure 134 The light shape formed by the single emission, at this time, the light shape also has a bright and dark cut-off line; as shown in Figure 9, when the optical element 130 with a cut-off line structure 134 is provided for the low-beam lighting device, the low-beam light shape (that is, the second light shape) formed by the combined emission of the first light 171, the second light 172 and the fourth light 172, at this time, the light shape also has a bright and dark cut-off line; as shown in Figure 10, when the optical element 130 with a cut-off line structure 134 is provided for the low-beam lighting device, the light shape formed by the single emission of the fourth light 172, at this time, the light shape also has a bright and dark cut-off line.

Optionally, the cut-off line structure 134 may include a plurality of sequentially connected sub-cut-off lines, wherein at least two adjacent sub-cut-off lines are connected to each other. The cut-off line has an angle, that is, the cut-off line structure 134 formed on the optical element 130 may have multiple inflection points. For example, FIGS. 1 to 3 show 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 connected between the first sub-surface and the second sub-surface. Thus, the cut-off line structure 134 at the boundary of the three near the reflector 120 has two inflection points.

Optionally, the connection between the two sub-cut-off lines with an included angle is arc-shaped, so that the gradient of the light cut-off line of the light shape is softer.

Optionally, the optical element 130 further includes a third reflective surface 133 disposed near the collimating element 140. The third reflective surface 133 is connected to the first reflective surface 131, and the junction of the two is a cut-off line structure 134. A zone III structure is disposed on the third reflective surface 133, so that the light passes through the zone III structure and is projected by the collimating element 140 to form a low beam zone III light shape.

Optionally, when the low-beam lighting device includes a light output module, it can be used as a main low-beam module or an auxiliary low-beam module, and the corresponding emitted light shape is also a main low-beam light shape or an auxiliary low-beam light shape. When the low-beam lighting device includes multiple light output modules, at least one of them can be used as a main low-beam module, and the rest can be used as auxiliary low-beam modules. Thus, the light shapes emitted by the main low-beam module and the auxiliary low-beam module are combined to form a low-beam light shape. The main low-beam light shape is the central area light shape of the low-beam light shape with high illumination, and the auxiliary low-beam light shape is the widened area light shape of the low-beam light shape, so that the left and right illumination ranges of the low-beam light shape meet the requirements.

In another aspect of the embodiments of the present application, a high-beam lighting device is provided, comprising at least one light emitting module, that is, when the light emitting module is used as a high-beam light emitting module 180, as shown in FIG. 11 , the light emitting module comprises a light source 110, a reflector 120, an optical element 130 and a collimating element 140. At this time, a focus 141 of the collimating element is arranged at or near the boundary of the reflector 120 close to the light source 110. Thus, the lower boundary gradient of the high-beam light shape can be adjusted by utilizing the first reflecting surface 131 of the optical element 130, thereby making the lower boundary gradient of the high-beam light shape softer, so that it is softer when connected with the low-beam light shape, and there is no obvious bright and dark boundary.

As shown in FIG12 , this is the high beam light shape when the high beam lighting device is not provided with the optical element 130, wherein the lower boundary gradient of the high beam light shape is relatively sharp; in contrast, as shown in FIG13 , this is the high beam light shape when the high beam lighting device is provided with the optical element 130, and it can be seen that, through the adjustment of the optical element 130, a part of the energy above the light-dark cutoff line can be mirrored to the bottom of the lower boundary of the virtual high beam light shape, thereby making the lower boundary gradient of the high beam light shape softer.

Optionally, the high beam lighting device includes a plurality of the above-mentioned light output modules connected in sequence. For example, the reflective surface of the low beam reflector can be a parabola, a quasi-parabola, an ellipsoid or a quasi-ellipsoid, and the collimating element 140 can be a plurality of lenses connected in sequence, and the light incident surface and the light output surface of the lens respectively realize unidirectional collimation of the light. The partial light shapes emitted by the plurality of light output modules connected in sequence are combined to form the final high beam light shape.

In another aspect of the embodiments of the present application, a high and low beam integrated lighting device is provided, as shown in FIG. 14 to FIG. 18 or FIG. 19 As shown in FIG20 , the low beam light output module and the high beam light output module 180 are included, and the low beam light output module is any of the above light output modules. Of course, in other embodiments, the low beam light output module and the high beam light output module 180 can also be exchanged, that is, the high beam light output module 180 is used as any of the above light output modules.

Optionally, as shown in Figures 14 to 18, when the low beam light output module is the above-mentioned light output module, the light output module includes a light source 110, a reflector 120, an optical element 130 and a collimating element 140, wherein the light source 110 and the optical element 130 can be arranged relative to each other, and at this time, the optical element 130 also includes a third reflecting surface 133 arranged close to the collimating element 140. As shown in FIG17 , for the low beam optical path: the first light 171 emitted by the light source 110 is reflected by the reflector 120 and then reflected again by the first reflecting surface 131 and then enters the collimating element 140; the second light 171 emitted by the light source 110 is reflected by the reflector 120 and then directly enters the collimating element 140, thereby, the first light 171 and the second light 171 can be combined and emitted through the collimating element 140 to form a low beam light shape; as shown in FIG18 , for the high beam optical path: the high beam light emitting module 180 emits the high beam light toward the third reflecting surface 133 of the optical element 130, and the high beam light is reflected by the third reflecting surface 133 and then emitted through the collimating element 140 to form a high beam light shape.

Optionally, as shown in FIG. 14 to FIG. 18 , the high-beam light-emitting module 180 includes a high-beam light source 181 and a high-beam reflector 182, that is, the high-beam light emitted by the high-beam light source 181 is emitted as the high-beam light emitted by the high-beam light-emitting module 180 after primary modulation by the high-beam reflector 182. The surface of the high-beam reflector 182 can be any one of a parabola, a quasi-parabola, an ellipsoid, or a quasi-ellipsoid. A quasi-parabola refers to a curved surface similar to a parabola, and a quasi-ellipsoid refers to a curved surface similar to an ellipsoid, which has similar optical properties. This application does not make specific restrictions on it, as long as the light emitted by the high-beam reflector 182 can be emitted as parallel or approximately parallel light. Optionally, a focus of the high-beam reflector 182 can be made to coincide with the focus of the third reflective surface 133, so as to avoid the high-beam light-emitting module 180 from blocking the low-beam light path. For example, as shown in Figures 19 and 20, the surface of the high-beam reflector 182 is an ellipsoid, and a high-beam light source 181 can be set at its near focus, and its far focus can coincide with the focus of the third reflecting surface 133. That is, at this time, the high-beam light 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 from the coincident focus position 210, and then after being reflected on the third reflecting surface 133, it is emitted from the collimating element 140 to form a high-beam light shape.

Optionally, the third reflective surface 133 may be a plane or a curved surface. When it is a curved surface, it can modulate the incident light, for example, collimate it in the horizontal direction and/or vertical direction. For example, as shown in FIG1 , the third reflective surface 133 is a plane, and for another example, as shown in FIG19 , the third reflective surface 133 is a parabola.

Optionally, as shown in FIG. 19 to FIG. 20, a low beam light output module and a high beam light output module 180 are included, and the low beam light output module is any of the above light output modules. Among them, the third reflective surface 133 is a parabola, and the junction of the third reflective surface 133 and the first reflective surface 131 forms a cutoff line structure 134. Further, the reflective surface of the low beam reflector adopts a parabola, a parabola-like surface, an ellipsoid or a ellipsoid-like surface, and the reflective surface of the high beam reflector adopts an ellipsoid or a ellipsoid-like surface. The light source is arranged at the first focus of the reflector, and the second focus coincides with the focus of the low-beam reflector. The focus of the collimating element is arranged near the inflection point of the cut-off line structure 134 .

Therefore, as shown in Figure 21, it is a low beam light shape with a light-dark cut-off line formed by the low beam light emitting module, as shown in Figure 22, it is a high beam light shape formed by the high beam light emitting module 180, and as shown in Figure 23, it is a lighting light shape formed by the high and low beam integrated lighting device (that is, the low beam light shape and the high beam light shape are connected near the light-dark cut-off line).

Optionally, the sub-cutoff lines of the cutoff line structure 134 have an arc-shaped transition at the connection, that is, the corners are rounded at the connection, thereby making the gradient of the light and dark cutoff lines softer, which facilitates the connection between the high beam light shape and the low beam light shape. In another aspect of the embodiment of the present application, a vehicle lamp is provided, comprising any of the above-mentioned low beam lighting devices, or any of the above-mentioned high beam lighting devices, or any of the above-mentioned high and low beam integrated lighting devices. The vehicle lamp in the present application can be used in transportation vehicles, such as bicycles, motorcycles, cars, ships, aircraft, etc., and the present application does not limit it.

The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Industrial Applicability

The present application provides a light output module and a low beam, high beam, and high and low beam integrated lighting device, and a headlight. By setting an optical element with a first reflective surface, the utilization rate of the light source reflected by the reflector can be improved, so that the first light is added on the basis of the second light, so that the light shape formed by the light output module has a higher brightness, which is particularly beneficial for improving the lighting brightness based on the module with a narrow light outlet size. The headlight of the present application can be used in transportation tools, such as bicycles, motorcycles, cars, ships, aircraft, etc., to improve the lighting brightness.

Claims (20)

A light output module, characterized in that it includes a light source, a reflector, an optical element and a collimating element arranged in sequence along an optical path, the optical element having a first reflecting surface, the first reflecting surface being located above or on the top surface of the optical element, the light emitted by the light source being reflected by the reflector and then incident on the optical element as a first light and on the collimating element as a second light, the first reflecting surface being used to reflect the first light to the collimating element so as to be combined with the second light to form a first light shape. The light output module as described in claim 1 is characterized in that the optical element has a second reflective surface on a side close to the reflector, part of the light emitted by the light source is incident on the second reflective surface, reflected toward the reflector by the second reflective surface, and after being reflected by the reflector, it is incident on the collimating element as a fourth light, and the first light, the second light and the fourth light are combined to emit to form a second light shape. The light output module as described in claim 1 is characterized in that the optical element has a second reflective surface on a side close to the reflector, the second reflective surface is a light shielding surface, and the unusable third light emitted by the light source is absorbed by the second reflective surface or reflected toward the reflector and reflected by the reflector toward the collimating element before being emitted. The light output module as described in claim 1 is characterized in that the optical element and the reflector are integrally formed, the first reflecting surface is a light shielding surface, and the unusable third light emitted by the light source is absorbed by the first reflecting surface or reflected toward the decorative ring of the light output module and blocked. The light output module as described in claim 1 is characterized in that the collimating element can be a lens or a light output reflector, and 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 output reflector to form a light output light shape. The light output module according to claim 1 is characterized in that the surface shape of the reflector is any one of a parabola, a quasi-parabola, an ellipsoid or a quasi-ellipsoid; the light source is arranged at a first focus of the ellipsoid or the quasi-ellipsoid, and the second focus is located on a side of the optical element close to the collimating element. A low beam lighting device, characterized in that it comprises at least one light output module as described in any one of claims 1 to 6, wherein the light output module comprises a light source, a reflector, an optical element and a collimating element, wherein the first reflecting surface of the optical element is close to the boundary of the collimating element to form a cut-off line structure, and the focus of the collimating element is set at or near the cut-off line structure. The low beam lighting device according to claim 7, characterized in that the cut-off line structure comprises a plurality of sub-cut-off lines connected in sequence, and at least two adjacent sub-cut-off lines have an included angle. The low beam lighting device according to claim 8, characterized in that the connection between the two sub-cut-off lines with an included angle is arc-shaped. The low beam lighting device as described in claim 7 is characterized in that the optical element also includes a third reflecting surface arranged close to the collimating element, and a zone III structure is arranged on the third reflecting surface, so that the light passes through the zone III structure and is projected by the collimating element to form a low beam zone III light shape. The low beam lighting device according to claim 7, characterized in that the light output module is a main low beam module or an auxiliary low beam module. A high beam lighting device, characterized in that it comprises at least one light output module as described in any one of claims 1 to 6, wherein the light output module comprises a light source, a reflector, an optical element and a collimating element, and the focus of the collimating element is set at or near the boundary of the reflector close to the light source. A high and low beam integrated lighting device, characterized in that it comprises a low beam light emitting module and a high beam light emitting module, wherein the low beam light emitting module or the high beam light emitting module is the light emitting module according to any one of claims 1 to 6. The high and low beam integrated lighting device as described in claim 13 is characterized in that, when the low beam light emitting module is the light emitting module, the optical element of the light emitting module also includes a third reflecting surface arranged close to the collimating element of the light emitting module, and the high beam light emitting module emits high beam light to the third reflecting surface, and is reflected by the third reflecting surface to the collimating element to form a high beam light shape. The high and low beam integrated lighting device as described in claim 14 is characterized in that the high beam light output module includes a high beam light source and a high beam reflector, and a focus of the high beam reflector coincides with the focus of the third reflective surface. The high and low beam integrated lighting device as described in claim 13 is characterized in that, when the high beam light emitting module is the light emitting module, the optical element of the light emitting module also includes a third reflecting surface arranged close to the collimating element of the light emitting module, and the low beam light emitting 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 light shape. The high and low beam integrated lighting device as described in claim 16 is characterized in that the low beam light output module includes a low beam light source and a low beam reflector, and a focus of the low beam reflector coincides with the focus of the third reflective surface. The high and low beam integrated lighting device according to any one of claims 14 to 17 is characterized in that a cut-off line structure is formed at the junction of the third reflecting surface and the first reflecting surface, and the focus of the collimating element is set at or near the cut-off line structure. The high and low beam integrated lighting device as described in claim 14 or 16 is characterized in that the third reflecting surface is a plane or a curved surface. A vehicle lamp, characterized in that it comprises the low beam lighting device as described in any one of claims 7 to 11, or the high beam lighting device as described in claim 12, or the high and low beam integrated lighting device as described in any one of claims 13 to 19.