Light distribution member, lighting or signaling device and motor vehicle

Abstract

The invention relates to a light distribution member and a lighting or signaling device and a motor vehicle having the light distribution member. The body of the light distribution member defines a light entry face through which light from a light source enters the body, a light exit face to which a portion of the light entering the body can directly reach as at least substantially parallel first light beams, and a first side face and a second side face which are reflective faces and are arranged on either side of an axis, at least one of the first side face and the second side face being provided with at least one first reflective structure which reflects light reaching it and causes the reflected light to travel towards the light exit face as second light beams, the first light beams enclose an angle with respect to the axis which is different from the angle which the second light beams enclose with respect to the axis.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of lighting and / or signal indication, and more particularly, to a light distribution member, and a lighting or signal indication device and a motor vehicle having the same. BACKGROUND

[0002] Various lighting and / or signal indication devices are used to provide light for lighting and / or signal indication, and are widely used in various fields, for example, in motor vehicles, to ensure safe driving by using lighting devices or signal indication devices such as vehicle lamps.

[0003] Generally, light emitted from a light source and entering an optical element through an entrance surface or entrance opening of the optical element is modulated by the optical element to form emitted light having a desired light distribution or pattern, and the emitted light is guided or emitted at an exit surface of the optical element towards a target direction to achieve a lighting or signal indication function. In order to achieve a wide light emission or illumination range and improve light efficiency, the optical element can be provided with multiple entrance surfaces or entrance openings, but this increases the number of light sources, resulting in increased costs. Currently, when the size (such as the light emission width) of the exit surface of the optical element is large, such as greater than 60 mm, it is difficult to achieve a balance between light efficiency and light emission or illumination range and regulatory requirements in the case where the optical element is provided with only one entrance surface or entrance opening. This is particularly the case when the optical element is used for a turn signal, a position lamp, etc. of a motor vehicle.

[0004] For these lighting or signal indication devices, such as turn signals, position lamps, etc. of a motor vehicle, not only are they required to achieve normal lighting or signal indication functions, such as turn indication, position indication, etc., but they are also usually required to meet certain angular range of external visibility to ensure that nearby road users can see the vehicle within a certain angular range (such as at a lateral position), thereby improving driving safety. SUMMARY

[0005] Therefore, it is an object of the present application to overcome at least one of the problems and deficiencies of the prior art.

[0006] One aspect of the present application provides a light distribution member for a motor vehicle, the light distribution member having an axis and comprising a body portion, the body portion defining a light entry face through which light from a light source enters the body portion, a light exit face to which a portion of the light entering the body portion can directly arrive as at least substantially parallel first light beams, and a first side face and a second side face which are reflective faces and are arranged on either side of the axis, wherein at least one of the first side face and the second side face is provided with at least one first reflective structure which reflects light arriving at it and causes the reflected light to travel towards the light exit face as second light beams. Here, the angle which the first light beams enclose relative to the axis is different from the angle which the second light beams enclose relative to the axis. Here, the requirements of the lighting effect and the regulations on the exit angle are met by at least two different light beams having different angles relative to the axis arriving at the light exit face, for example the regulatory requirements of 25 degrees and 80 degrees are met, so that the light distribution member can be used for a position light or a turn signal.

[0007] In some embodiments, at least one of the first side face and the second side face is further provided with at least one second reflective structure which reflects light arriving at it into at least substantially parallel to the first light beams. Thereby the light exit area of the light exit face is further widened.

[0008] In some embodiments, a plurality of first reflective structures is provided which are distributed arranged on at least one of the first side face and the second side face and are inclined relative to the axis by a respective angle.

[0009] In some embodiments, the at least one first reflective structure is inclined towards the axis along the light exit direction.

[0010] In some embodiments, a plurality of second reflective structures is provided which are adjacently or spacedly arranged on the respective side face, wherein each second reflective structure is a portion of a parabolic surface having the light source as a focal point. By this arrangement, light arriving at the second reflective structure can be reflected at least to a large extent into a parallel light beam, preferably into parallel to the first light beams.

[0011] In some embodiments, the light distribution member has a single light entry face.

[0012] In some embodiments, the light entrance surface comprises a first sub light entrance surface and second sub light entrance surfaces located on both sides of the first sub light entrance surface; the light exit surface comprises a first sub light exit region and second sub light exit regions located on both sides of the first sub light exit region. The first sub light entrance surface collimates light entering the main body portion through the first sub light entrance surface into parallel light such that the parallel light travels within the main body portion parallel to the axis to the first sub light exit region and exits therefrom, and each of the second sub light entrance surfaces causes light transmitted into the main body portion through the second sub light entrance surface to travel in the main body portion to a corresponding one of the first and second side surfaces and to be reflected inside the main body portion at the side surface towards the light exit surface.

[0013] In some embodiments, the first sub light entrance surface is provided with a plurality of dome-like or pillow-like protrusions, each of which collimates light entering the main body portion through it into parallel light.

[0014] In some embodiments, at least one of the second sub light entrance surfaces is an arcuate surface that collimates light in the thickness direction of the light distribution member.

[0015] In some embodiments, an edge profile of at least one of the second sub light entrance surfaces in the thickness direction of the light distribution member is a portion of a circular arc centered on the light source.

[0016] In some embodiments, the light entrance surface is a cylindrical Fresnel lens structure centered on the light source so as to collimate incident light in the thickness direction of the light distribution member.

[0017] In some embodiments, a linear Fresnel lens structure is formed in the main body portion so as to collimate light entering the main body portion into parallel light beams.

[0018] Embodiments of another aspect of the present application also provide a lighting or signaling device comprising a light source and a light distribution member as described in any of the embodiments of the present application.

[0019] In some embodiments, the lighting or signaling device comprises one of a turn signal and a position light of a motor vehicle.

[0020] Embodiments of yet another aspect of the present application also provide a motor vehicle comprising a lighting or signaling device as described in any of the embodiments of the present application.

[0021] In the above-described embodiments of the present application, particularly in the case where only one light entrance surface is provided, by providing a first reflection structure on the respective side surface of the light distribution member in combination with other optical functional surfaces, the desired light exit effect can still be achieved for a long light exit surface, and the optical distribution likewise meets the regulatory requirements. Here, the construction of the light distribution member itself is relatively simple, which further facilitates installation and reduces costs.

[0022] Other objects and advantages of the present application will become apparent and the present application will be fully understood from the following detailed description, the appended claims and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] These and / or other aspects, features and advantages of the present application will become apparent and be more readily understood from the following description, by way of example, with reference to the drawings.

[0024] Figure 1 is a perspective view showing the structure of a light distribution member according to an exemplary embodiment of the present application, in which the light path for normal light emission and for external visibility is schematically shown;

[0025] Figure 2 is a front perspective view of a light distribution member according to an exemplary embodiment of the present application, showing the structure of the light emission surface viewed against the light emission direction of the light distribution member;

[0026] Figure 3 is a sectional view showing the structure of a light distribution member according to an exemplary embodiment of the present application, taken along the line B-B' in Figure 2

[0027] Figure 4 is a side perspective view of a light distribution member according to an exemplary embodiment of the present application, in which only the light path for external visibility is schematically shown alone;

[0028] Figure 5 is a perspective view showing the structure of a light distribution member according to another exemplary embodiment of the present application; Figure 4 is a partial enlarged view of the dotted circle portion in

[0029] Figure 6 is a schematic view showing the light path for external visibility of a light distribution member according to an embodiment of the present application;

[0030] Figure 7 is a rear perspective view schematically showing the structure of a light distribution member according to an exemplary embodiment of the present application; and

[0031] Figure 8 is a perspective view showing the structure of a light distribution member according to another exemplary embodiment of the present application. DETAILED DESCRIPTION

[0032] ​Embodiments of the present application will be described below in detail with reference to the accompanying drawings. In the present specification, components having the same function or similar functions are denoted by the same reference numerals. The following description of exemplary embodiments of the present application with reference to the drawings is intended to explain the inventive concept of the present disclosure and should not be understood as a limitation on the present application.

[0033] In addition, in the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the present application. However, it will be apparent to one skilled in the art that one or more embodiments can be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the accompanying drawings.

[0034] Embodiments of the present application provide a light distribution member, which can be used for lighting and / or signaling devices of a motor vehicle, such as a high brake light, a turn signal or a position light, for example. The light distribution member modulates light entering the light distribution member from a light source and through an entrance surface or entrance opening, in particular a single entrance surface or entrance opening, of the light distribution member, to form emergent light having a desired light distribution or pattern from an exit surface, thereby realizing a lighting and / or signaling function, wherein a reflective structure is formed on a side surface of the light distribution member to reflect at least a portion of the light entering the light distribution member towards the exit surface, so that the portion of light exits from the exit surface at a predetermined angle with respect to a vehicle longitudinal direction to satisfy an external visibility within a certain angular range, ensuring that nearby road users can see the vehicle equipped with the light distribution member within a certain angular range, such as at a lateral position, improving driving safety.

[0035] In one exemplary embodiment, as shown in Figure 1 The light distribution member 1000 has a main body portion 1100. The main body portion 1100 includes or defines an entrance surface 1200, an exit surface 1300, a first side surface 1110 configured as a reflective surface, and a second side surface 1120. Here, the main body portion 1100 includes a single entrance surface. An axis O-O’ of the light distribution member 1000 is also shown, which corresponds to a main exit direction or a vehicle longitudinal direction of the light distribution member. A light source for the light distribution member can be arranged on the axis.

[0036] As shown, the light distribution member 1000 or its main body portion 1100 has a generally plate-like sector shape as a whole. Here, the light exit face 1300 and the light entrance face 1200 can be arranged successively along a first direction Y parallel to the axis O-O', while the first side face 1110 and the second side face 1120 are located on both sides of the main body portion 1100 in a second direction X perpendicular to the axis O-O'. In other words, the first direction Y and the second direction X can divide into two quadrants, with the axis O-O' as the boundary line of the two quadrants, the first side face 1110 in the second quadrant and the second side face 1120 in the first quadrant. Here, the first side face 1110 and the second side face 1120 can be connected or joined to the light entrance face 1200, respectively. The light distribution member 1000 or its main body portion 1100 also has a thickness extending in a third direction Z perpendicular to the first direction Y and the second direction X. In one example, the thickness is constant, for example, about 10 mm, but the present application is not limited thereto, and the thickness can be selected or designed according to the specific application and requirements of the light distribution member.

[0037] Light from the light source 1001 enters the main body portion 1100 through the light entrance face 1200. The light entrance face 1200 is formed or defined by a recess or notch of the main body portion 1100 facing the light source 1001, for example, as shown in Figure 1 、 3 、4、5、7、8. The light distribution member 1000 adjusts or directs the light from the light source 1001 entering the main body portion 1100 via the light entrance face 1200, at least collimates the light in the thickness direction of the light distribution member at the light entrance face, so that a portion of the light travels directly inside the main body portion 1100 towards the light exit face 1300 as a first light beam 1002 substantially parallel to the axis O-O' after being adjusted or directed by the light entrance face 1200. For ease of understanding, "parallel" is described herein with reference to the axis O-O', for example, parallel to the axis, and "parallel" mentioned hereinafter can also be understood in this way. Of course, the adjusted first light beam 1002 can also have a certain opening angle with respect to the axis O-O'.

[0038] It will be understood that the light source described herein is not limited to a light emitting element such as a LED, but can also be an optical element such as a condenser or lens, etc. that concentrates or otherwise modulates light from a light emitting element. Accordingly, the light exit point of the light source described herein can be the center of the light emitting element, or the light exit center of such an optical element.

[0039] In one embodiment, as Figure 2As shown, the light-emitting surface 1300 has a light distribution structure, such as an array of dome-shaped or pillow-shaped protrusions 1301, to form uniform emitted light and ensure that the emitted light meets the regulatory requirements of relevant countries or regions regarding the light emission angle. It is understood that the shape, structure, arrangement, etc., of the light-emitting surface 1300 or its protrusions 1301 can be designed by those skilled in the art as needed or according to relevant regulations.

[0040] like Figure 3 As shown, the light-emitting surface 1300 has a width W extending in the second direction X. Individual dome-shaped or pillow-shaped protrusions 1301 have a width w1 extending in the second direction X, wherein the widths w1 of the various protrusions 1301 may be the same or different from each other. In some examples, the width W is at least 60 mm, for example up to 94.7 mm, while the corresponding width w1 is approximately 2.7 mm, but the invention is not limited thereto; these widths can be selected or designed according to the specific application and requirements of the light distribution component.

[0041] The light-emitting surface 1300 can be at any suitable angle relative to the axis O-O' as needed.

[0042] According to an embodiment of the present invention, at least one of the first side surface 1110 and the second side surface 1120 of the light distribution member 1000 is provided with a first reflective structure 1112. This first reflective structure 1112 causes another portion of the light entering the main body 1100 to travel towards the light-emitting surface 1300 at a first reflective interface between the first reflective structure 1112 and the air outside the light distribution member, so as to be emitted as a second light beam 1003 at the light-emitting surface 1300. The emitted light forms an angle α, for example, 80 ± 5 degrees, relative to the axis O-O', to form light for external visibility and meet regulatory requirements for the external visibility of lighting or signaling devices such as turn signals or position lights. Figure 1 , 3 As shown in -6.

[0043] Furthermore, although in the illustrated embodiment, only the first side 1110 of the light distribution member 1000 is provided with the first reflective structure 1112, it is understood that in other embodiments, such a reflective structure can also be provided on the second side 1120 as needed, so that this external visibility can be achieved on both sides of the light distribution member, thereby further improving driving safety. The following description only uses the first side 1110 being provided with the first reflective structure 1112 as an example.

[0044] In one example, the first reflective structure 1112 is a total reflection surface, which performs total reflection on the light traveling to the interface in the main body 1100 at the interface between itself and the outside air, avoiding light emanating from the side, so that the reflected light travels towards the light-emitting surface 1300 inside the main body 1100.

[0045] In some exemplary embodiments, such as Figure 1 , 3 As shown in Figure -5, the first reflective structures 1112 are arranged at predetermined intervals along the first side surface 1110. Each first reflective structure 1112 is tilted at a corresponding angle relative to the axis O-O', thereby ensuring that the angle of light reflected from the first reflective interface between the first reflective structure 1112 and the external air and emitted from the light-emitting surface 1300 relative to the axis O-O' is within a preset angular range, for example, 80 ± 5 degrees. This satisfies regulatory requirements and ensures that nearby traffic participants (such as pedestrians or other vehicle drivers) can see the vehicle equipped with the light-distributing member within a certain angular range, such as from the side of the vehicle, thereby improving driving safety. It is understood that, depending on actual needs, the first reflective structures 1112 can also be connected or combined with each other, as long as the emitted light for achieving external visibility within a certain angular range can be obtained by means of these reflective surfaces.

[0046] like Figure 5 and 6 As shown, in the second side, at least one first reflective structure 1112 extends toward the light-emitting surface 1300 in a manner inclined toward the axis O-O' (e.g., in the figure, in a manner gradually inclined toward the axis O-O' from bottom to top). The angle of inclination of each first reflective structure 1112 relative to the axis O-O' and / or the material, shape, etc. of the light distribution component can be set or designed according to actual needs, so that it modulates or redistributes light by reflection (such as total internal reflection) or other redirection methods, to ensure that emitted light for achieving external visibility within a certain angular range can be obtained by means of these reflective surfaces.

[0047] like Figure 3 As shown, the first reflective structure 1112 has a dimension h extending in the first direction Y. The dimension h of each first reflective structure 1112 may be the same or different from each other. In one example, the dimension h is approximately 2 mm, but the invention is not limited thereto, and the dimension may be selected or designed according to the specific application and requirements of the light distribution component.

[0048] In some embodiments, such as Figures 1-3As shown, the light-incident surface 1200 includes or defines a first sub-light-incident surface 1210 and second sub-light-incident surfaces 1220 located on both sides of the first sub-light-incident surface 1210 (in the second direction X). The light-exiting surface 1300 includes or defines a first sub-light-exiting region 1310 and second sub-light-exiting regions 1320 located on both sides of the first sub-light-exiting region 1310 (in the second direction X). It is understood that although different regions of the light-incident and light-exiting surfaces are described with different expressions herein for ease of explanation, these regions may be continuous or integral with each other, or they may be spaced apart from each other.

[0049] As shown in the figure, the first sub-incident surface 1210 is the middle part of the incident surface 1200. It collimates the light entering the main body 1100 through the first sub-incident surface 1210 into at least substantially parallel light, such as parallel light parallel to the axis O-O'. The parallel light travels within the main body 1100 to the first sub-exit region 1310 and is emitted from the first sub-exit region 1310.

[0050] In some examples, such as Figure 1 , 4 As shown in Figure 7, the first sub-light-incident surface 1210 is provided or formed with an array structure of multiple dome-shaped or pillow-shaped protrusions 1211, and collimates a portion of the light from the light source 1001 (such as conical light) into parallel light that travels directly towards the light-emitting surface 1300 within the main body 1100. For example, each protrusion 1211 protrudes towards the light source 1001 at different angles or orientations, and the distance from the center of each protrusion 1211 to the light-emitting point O of the light source 1001 is different, so that the overall outline of the first sub-light-incident surface 1210 presents a dome-shaped shape protruding towards the light source 1001. Figure 3 As shown, the cross-section of the first sub-incident surface 1210 has a dimension d extending in the second direction X. In one example, the dimension d is approximately 18 mm.

[0051] For example, suppose the distance or optical path from the light source 1001 to a position on the first sub-light-incident surface 1210 or the protrusion 1211 is I1 (the space between the light source 1001 and the first sub-light-incident surface 1210 is air), and the vertical distance or optical path from that position to the light-emitting surface 1300 is I2; the distance or optical path from the light source 1001 to another position on the first sub-light-incident surface 1210 or the protrusion 1211 is I... 10 The vertical distance or optical path from this position to the light-emitting surface 130° is I. 20 If the refractive index of the light distribution component or its main body 1100 is n, then the shape or position of each dome-shaped or pillow-shaped protrusion 1211 of the first sub-incident surface 1210 can satisfy the formula: I²×n + I1 = I 20 ×n + I 10.

[0052] The second sub-light-incident surface 1220 collimates light from the light source 1001 in the Z direction and causes light transmitted therethrough into the main body portion 1100 to travel in the main body portion 1100 to a corresponding one of the first side surface 1110 and the second side surface 1120. For example, some or all of the light that enters the main body portion 1100 from the second sub-light-incident surface 1220 on the left side of the figure travels toward the first side surface 1110 on the left side, and some or all of the light that enters the main body portion 1100 from the second sub-light-incident surface 1220 on the right side of the figure travels toward the second side surface 1120 on the right side and is reflected inside the main body portion 1100 toward the light-exit region and exits from the light-exit region at a reflection interface between the respective side surface and the external air.

[0053] Thus, not only can light from the light source exit from the first sub-light-exit region 1310 of the light-exit surface 1300 as an intermediate region, but light that enters the main body portion 1100 but deviates from the axis O-O’ can be modulated or redirected by means of side reflection to exit from the second sub-light-exit region 1320 on both sides of the first sub-light-exit region 1310, which increases the effective light-exit width or area of the light-exit surface 1300 and thus improves the light efficiency of the light distribution member. In some examples of the present application, the effective light-exit width of the light-exit surface 1300 in the second direction X is at least 60 mm, for example, can reach 94.7 mm, thus achieving a wider light-exit range in the case that the light distribution member is provided with only a single light-incident surface or light-incident opening.

[0054] In some examples, the two edge profiles of at least one of the two second sub-light-incident surfaces 1220 in the Z direction are portions of a circular arc line with the light source 1001 as the center. The second sub-light-incident surface is also an arched surface that is convex toward the light source, and light from the light source 1001 can enter the main body portion 1100 collimated in the Z direction through the second sub-light-incident surface. The intersection line of the second sub-light-incident surface and the first sub-light-incident surface is an arc line that is convex toward the light source.

[0055] At least one of the first side surface 1110 and the second side surface 1120 is provided with at least one second reflection structure or similar light redirection structure. For example, as shown in FIG. 12, the first side surface 1110 on the left side of the figure is provided with a second reflection structure 1130, and the second side surface 1120 on the right side of the figure is provided with a second reflection structure 1140. Figure 1 、 3As shown in FIGS. 7-8, the first side surface 1110 is provided or formed with second reflection structures 1101. The second reflection structures 1101 form second reflection interfaces with the outside air. Light entering the main body 1100 through the second sub-light entrance surface 1220 and proceeding to the second reflection structures is reflected at the second reflection interfaces. The reflected light proceeds inside the main body 1100 toward the second sub-light exit area 1320 in a direction that is at least substantially parallel to the proceeding direction of the light that is collimated through the first sub-light entrance surface and enters the main body 1100, and exits from the corresponding second sub-light exit area. Here, the light beam formed by the reflected light can also have a certain opening angle with respect to the axis O-O'.

[0056] Referring again to FIGS. 7-8, Figure 6 It can be seen that, in the side surface provided with both the first reflection structures 1112 and the second reflection structures 1101, the inclination conditions of the first reflection structures 1112 and the second reflection structures 1101 with respect to the axis O-O' of the light distribution member 1000 are different, thereby reflecting the light reaching the corresponding reflection structures toward the light exit surface at different angles.

[0057] In the illustrated embodiment, a plurality of second reflection structures 1101 are arranged on the first side surface 1110 at intervals. Additionally, a plurality of second reflection structures 1101 are arranged on the second side surface 1120 at intervals. There can be first reflection structures 1112 or other connecting structures between adjacent second reflection structures 1101. Here, each second reflection structure 1101 can be a portion of a parabolic surface with the light source 1001 as the focus, for example, a portion of a parabolic surface formed by parabolic line sweeping with the light source as the focus. In particular in the case where the second reflection structures are staggered in the X direction, the parameters of the parabolic surfaces forming the respective second reflection structures are different. Exemplarily, the distances from the centers of the parabolic surfaces of the respective second reflection structures 1101 to the light source as the focus (focal chord length) are 32 mm, 31 mm, 30 mm, 29 mm, 28 mm, and so on in sequence (i.e., in the order from the second reflection structure farthest from the light source to the second reflection structure closest to the light source), which can be selected or designed according to the specific application and requirements of the light distribution member.

[0058] As shown in FIGS. 7-8, Figure 1 and 4 A portion of the light entering the main body 1100 through the second sub-light entrance surface 1220 proceeds to the first reflection structures 1112 provided or formed on the first side surface 1110 and is reflected at the interfaces between the first reflection structures 1112 and the outside air to proceed inside the main body 1100 toward the light exit surface 1300, achieving the exiting light for external visibility.

[0059] It can be appreciated that in some cases, a portion of the light entering the main body 1100 through the first light entrance surface 1210 can also travel to the first side surface 1110 and / or the second side surface 1120 and be reflected by the reflective structure on the side surface at a different angle towards the light exit surface 1300, thereby further improving the light efficiency.

[0060] In some other embodiments of the present application, as shown in Figure 8 the light entrance surface 1200' of the light distribution member is a Fresnel structure, for example a cylindrical Fresnel structure, with the light source 1001 at the center of the Fresnel structure. In this case, the light from the light source 1001 enters the main body 1100 after being collimated in the Z direction, i.e. the thickness direction of the light distribution member, by the cylindrical Fresnel structure at each position of the light entrance surface 1200'. At this time, more reflective surfaces or similar light re-orientation structures can be provided or formed on one or more side surfaces of the light distribution member to reflect the light from the light source 1001 entering the main body 1100 via the light entrance surface 1200' in the form of a cylindrical Fresnel structure towards the light exit surface 1300.

[0061] In some embodiments of the present application, as shown in Figure 8 the main body 1100 is formed with a Fresnel lens structure 1130 configured to collimate at least a portion of the light entering the main body 1100 through the light entrance surface into parallel light parallel to the axis O-O' in the second direction X, thereby achieving more uniform light emission. For example, the Fresnel lens structure 1130 is a linear Fresnel lens extending in the second direction X. In Figure 8 , the Fresnel lens structure 1130 is formed or defined by a through hole 1131 (such as a rectangular hole) formed in the main body 1100, the through hole 1131 extending through the main body 1100 in the third direction Z, one side wall (such as the side wall close to the light source) of the through hole 1131 can be formed with a plurality of sawtooth-shaped light distribution portions 1132 for collimating the light into parallel light. The opposite side wall (such as the side wall close to the light exit surface) of the through hole 1131 can be flat and perpendicular to the emission direction of the parallel light formed by the light distribution portions 1132.

[0062] In the above embodiments, the adjusted or directed parallel light and the light reflected by the first reflective structure reach the light exit surface 1300 after being emitted through the light exit surface with light distribution function, forming a light distribution that meets regulatory requirements.

[0063] It should be noted that although the light exit surface of the light distribution member is shown as being inclined with respect to the axis in the drawings, this is merely illustrative. The orientation of the light exit surface of the light distribution member can be set as needed, and the light distribution structure forming the light exit surface is adjusted accordingly.

[0064] The light distribution member provided by the embodiments of the present application can be applied in various lighting or signal indicating devices, which can include a light source 1001 and the light distribution member, and the light distribution member modulates or distributes the light from the light source to achieve normal light emission and external visibility. Exemplarily, the lighting or signal indicating device can include one of a turn signal and a position lamp of a motor vehicle.

[0065] The embodiments of the present application also provide a motor vehicle including the lighting or signal indicating device according to any one of the above embodiments.

[0066] Although the present application is illustrated with reference to the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplarily illustrate the preferred embodiments of the present application, and cannot be understood as a limitation of the present application. The dimensional proportions in the drawings are merely illustrative, and cannot be understood as a limitation of the present application.

[0067] Although some embodiments of the general inventive concept have been shown and described, it is to be understood that changes can be made in the embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.

Claims

1. A light distribution member (1000) for a motor vehicle, the light distribution member having an axis (O-O’) and comprising a body portion (1100) defining: - a light entry face through which light from a light source (1001) enters the body portion (1100); - a light exit face (1300) comprising a first sub light exit area (1310) and second sub light exit areas (1320) located on either side of the first sub light exit area (1310), a portion of the light entering the body portion (1100) being directly accessible to the first sub light exit area of the light exit face (1300) as a first light beam (1002) which is at least substantially parallel; and - a first side face (1110) and a second side face (1120), the first side face (1110) and the second side face (1120) being reflective faces and being arranged on either side of the axis (O-O’), wherein - at least one of the first side face (1110) and the second side face (1120) being provided with at least one first reflective structure (1112) which reflects light arriving at it and causes the reflected light to travel towards the light exit face (1300) as a second light beam (1003) and to exit, to obtain an exit light for exterior visibility, the angle subtended by the first light beam (1002) relative to the axis (O-O’) being different from the angle subtended by the second light beam (1003) relative to the axis (O-O’); - wherein a plurality of said first reflective structures (1112) are provided, which are arranged spaced apart on at least one of the first side face (1110) and the second side face (1120); - wherein each first reflective structure (1112) is inclined by a respective angle towards the axis (O-O’) along a main exit direction of the light distribution member, and a surface area of the at least one side face adjacent to the first reflective structure is inclined relative to the first reflective structure in such a way as to extend away from the axis (O-O’) along the main exit direction, to form a step between the first reflective structure and the surface area, and the surface area is configured to re-direct light entering the body portion but deviating from the axis, to exit light from the second sub light exit area.

2. The light distribution member (1000) according to claim 1, wherein - at least one of the first side face (1110) and the second side face (1120) is further provided with at least one second reflective structure (1101) which reflects light arriving at it as at least substantially parallel to the first light beam (1002).

3. The light distribution member (1000) according to claim 2, wherein - a plurality of said second reflective structures (1101) are provided, which are arranged adjacent or spaced apart on the respective side face, wherein each second reflective structure (1101) is a portion of a parabolic surface having the light source (1001) as a focus.

4. The light distribution member (1000) according to claim 1, wherein - the light distribution member (1000) has a single light entry face.

5. The light distribution member (1000) according to any one of claims 1-4, wherein The light-incident surface comprises a first sub-light-incident surface (1210) and second sub-light-incident surfaces (1220) located on both sides of the first sub-light-incident surface (1210), The first sub-light-incident surface (1210) collimates light entering the main body portion (1100) through the first sub-light-incident surface (1210) into parallel light so that the parallel light travels within the main body portion (1100) to the first sub-light-exit region (1310) parallel to the axis (O-O') and exits from the first sub-light-exit region (1310), and Each of the second sub-light-incident surfaces (1220) causes light transmitted into the main body portion (1100) through the second sub-light-incident surface to travel in the main body portion (1100) to a corresponding one of the first side surface (1110) and the second side surface (1120) and be reflected inside the main body portion (1100) toward the light- exit surface at the side surface.

6. The light distribution member (1000) according to claim 5, wherein The first sub-light-incident surface (1210) is provided with a plurality of dome-shaped or pillow-shaped protrusions (1211), each protrusion collimating light entering the main body portion (1100) through the protrusion into parallel light.

7. The light distribution member (1000) according to claim 6, wherein At least one of the second sub-light-incident surfaces (1220) is an arc-shaped surface that collimates light in a thickness direction of the light distribution member (1000).

8. The light distribution member (1000) according to claim 7, wherein An edge profile of at least one of the second sub-light-incident surfaces (1220) in a thickness direction of the light distribution member (1000) is a part of a circular arc line with the light source (1001) as a center.

9. The light distribution member (1000) according to any one of claims 1-4, wherein The light-incident surface is a columnar Fresnel lens structure with the light source (1001) as a center.

10. The light distribution member (1000) according to claim 8, wherein A linear Fresnel lens structure (1130) is formed in the main body portion (1100).

11. The light distribution member (1000) according to any one of claims 1-4, wherein The axis is along a main exit direction of the light distribution member. A light source for the light distribution member is arranged on the axis.

12. The light distribution member (1000) according to any one of claims 1-4, wherein The second light beam (1003) is at an angle a relative to the axis, the angle a being 80±5 degrees; The first reflecting structure is inclined along the main exit direction in a manner of gradually approaching the axis.

13. An illumination or signal indicating device comprising a light source (1001) and a light distribution member (1000) according to any one of claims 1-12.

14. The illumination or signal indicating device according to claim 13, wherein the illumination or signal indicating device comprises one of a turn signal and a position light of a motor vehicle.

15. A motor vehicle comprising the illumination or signal indicating device according to claim 13 or 14.

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