CN216158966U - Light emitting module and vehicle - Google Patents

Abstract

The utility model relates to a light emitting module and a vehicle. The light emitting module (1) has a main light exit direction and comprises: a first light source (52) for a first light function; a first reflector (22) for receiving and reflecting light from the first light source; a second light source (53) for a second light function; a second reflector (23) for receiving and reflecting light from the second light source; a carrier (3) on which the light source and the reflector are arranged; and a lens (4) for projecting the light rays of the light source reflected by the corresponding reflector. The lens (4) is configured to form a light distribution associated with the reflective surfaces of the first and second reflector, respectively, the first light source, the first reflector, the second light source (53) and the second reflector being arranged on the same mounting surface (7) on the carrier.

Description

Light emitting module and vehicle

Technical Field

The utility model relates to a light emitting module and a vehicle.

Background

Various light emitting modules for motor vehicles are known in the art to produce an illumination beam, a signal beam, or a combination of both.

For example, document CN102460002B discloses a lighting module for a motor vehicle. The lighting module includes: two concave reflectors each having a first focal point and a second focal point such that a majority of light rays exiting from the respective first focal point and reflected by the respective concave reflector converge toward the respective second focal point, wherein a reflective surface of one concave reflector is oriented toward a reflective surface of the other concave reflector; a shield disposed in a plane approximately between the two concave reflectors, having a first face and a second face facing the reflective surface of the respective concave reflector, the shield further comprising a cut-off line edge joining the first face and the second face; an optical element comprising a focal point in a plane perpendicular to an optical axis of the lighting module and passing through the edge of the cut-off line. The cut-off line edge of the illumination module is located at the second focal points of the two concave reflectors.

In the above type of lighting module, a high positioning accuracy is required. In addition, in particular when two concave reflectors are provided one above the other, a given installation dimension needs to be provided in the height direction due to the structural dimensions of the concave reflectors themselves.

SUMMERY OF THE UTILITY MODEL

It is therefore an object of the present invention to provide a light emitting module which is capable of overcoming the above-mentioned disadvantages at least in part.

According to a first aspect of the utility model, a light emitting module for a vehicle is presented, the light emitting module having a main light exit direction and comprising: a first light source for a first light function; the first reflector is distributed to the first light source, receives and reflects light rays emitted by the first light source along the main light emitting direction; a second light source for a second light function; the second reflector is distributed to the second light source, receives and reflects the light rays emitted by the second light source along the main light emitting direction; a carrier on which the first light source, the first reflector, the second light source and the second reflector are arranged; a lens projecting light rays emitted by the first and second light sources, wherein the lens is configured to form a light distribution associated with the reflective surfaces of the first and second reflectors, respectively, and the first light source, the first reflector, the second light source and the second reflector are arranged on the same mounting surface on the carrier.

In the proposed light emitting module, by arranging the light sources and the corresponding reflectors, which fulfill different light functions, on the same side of the carrier, this may effectively reduce the overall height dimension of the light emitting module, thereby achieving a compact size. Here, "light function" can be understood as a lighting function or a signaling function.

According to an embodiment of the utility model, the lens is one-piece and has a section assigned to the respective reflector, which section has a respective focal location and an optical axis corresponding to the main light exit direction. Preferably, the focus location may be a focal line. Thus, by individually designing each lens segment such that the respective lens segment matches the assigned reflector, a conditioning of the light emitted by the light source and a light distribution associated with the reflecting surface of the associated reflector can be achieved.

According to an embodiment of the utility model, the reflection surface of the respective reflector has a front edge and a rear edge with reference to the propagation direction of the light ray along the main light exit direction, wherein in the operating position of the light emitting module the front edge is associated with a lower part of the light distribution and the rear edge is associated with an upper part of the light distribution, wherein the focus point is at or near the rear edge of the reflection surface of the respective reflector; and/or the focal location is at or near a middle portion between the front and rear edges on the reflective surface of the respective reflector. For this purpose, the distance of the focus point with respect to the rear edge and/or the middle portion may be in a spatial range of less than 10mm, preferably in a spatial range of less than 5 mm. In other words, it is sufficient if the focus position is at or around the rear edge or the middle portion, and thus it is possible to focus on the front, rear, left, and right of the rear edge or the middle portion. In this way, a clear light distribution for the respective light function can likewise be formed. In this embodiment, this therefore makes the light emitting module insensitive to positioning tolerances of the light source relative to the reflective surface, it being only necessary to ensure that the reflective surface of the reflector is within tolerances relative to the lens, which is advantageous for manufacturing and assembly.

According to an embodiment of the utility model, the light function is selected from a low beam function, a high beam function, a signaling function. Thus, for example, the first light function is a low-beam function, the second light function is a high-beam function, or additionally a third signal function is also provided. Therefore, in the mounted state of the light emitting module in the vehicle, the light exit area having a smaller size in the vertical direction of the vehicle can be simultaneously used for a plurality of light functions, which is advantageous for satisfying the light distribution requirement of the vehicle lamp having a compact size, as compared with the related art.

According to an embodiment of the utility model, at least one of the first light source and the second light source is provided with a barrier arranged in front of the light source along a propagation direction of the light rays in the main light exit direction, wherein the barrier is preferably opaque. By means of the arranged barrier, light from the light source that is not reflected by the reflector can be received, in order to avoid that such light forms disturbing light. Especially for low-beam light distributions with a cut-off line, it is not desirable to be illuminated above the cut-off line. Preferably, an opaque barrier may absorb the received light. Of course, the barrier may also be a reflective barrier to reflect light, e.g. towards other light absorbing areas.

According to an embodiment of the utility model, the mounting face forms an inclination angle with respect to the main light exit direction, the inclination angle being less than or equal to 20 °, preferably less than or equal to 15 °, preferably less than or equal to 10 °, preferably less than or equal to 5 °. In the case of a light source whose emission angle is not 180 °, this arrangement enables the light source to illuminate the rear edge of the reflector or the region immediately behind the rear edge better.

According to an embodiment of the utility model, the minimum distance of the rear edge from the light source is in the range between 1mm and 5 mm. This enables a compact construction while ensuring illumination of the reflective surface.

According to an embodiment of the present invention, the first light source and the second light source are semiconductor-type light sources. The semiconductor type light source may be a light emitting diode such as a white, yellow, red light emitting diode or a light emitting diode capable of emitting light of other colors. Light emitting diodes are readily available on the market and are easy to assemble. Such a light source may emit light in a half space defined by the mounting surface, wherein the light source may have a light emission angle of 120 ° in the half space, for example.

According to an embodiment of the utility model, the first light source and the second light source are arranged on the printed circuit board, preferably close to an edge of the printed circuit board. This can, for example, reduce the size of the printed circuit board.

According to an embodiment of the utility model, the printed circuit board has an indentation for the barrier. The barrier for the light source may protrude through the indentation of the printed circuit board so that the barrier may be as close as possible to the assigned light source. Here, the notch may be provided in a face area of the printed circuit board body, or may be provided at a periphery of the printed circuit board body. In the latter case, the indentation forms a depression at the periphery of the printed circuit board body.

According to an embodiment of the utility model, the reflecting surface of the reflector has a parabolic or elliptical profile. Thus, it may be formed by rotation of a parabolic profile or an elliptical profile about an axis. The axis corresponds to the optical axis of the lens. When the reflecting surface of the reflector is a compound reflecting surface, i.e. comprises a plurality of segments, the single continuous reflecting surface forming each reflecting surface segment may have the above-mentioned parabolic profile or elliptical profile, which may be arranged offset along the main light exit direction or a direction transverse to the main light exit direction. The reflective surface or a section thereof may be an asymmetric surface. The reflecting surface of the reflector may also be other free-form surfaces. Here, the "free-form surface" is generally understood to be formed of a curved surface that freely changes in a complex manner, that is, a so-called free-form curved surface.

According to an embodiment of the utility model, the carrier is a unitary piece of heat sink material. Thus, the heat emitted by the light source can be dissipated directly through the carrier into the surroundings, while a compact structure is achieved. In order to increase the heat dissipation area, the carrier can also be provided with a sheet structure.

According to an embodiment of the utility model, the carrier is provided with a partition which extends vertically in the operating position of the light emitting module and is preferably light-absorbing, in order to avoid light sources reflected by one reflecting surface or a section thereof from interfering with light rays reflected by another reflecting surface or a section thereof. Thus, the reflectors can be arranged more compactly.

According to an embodiment of the utility model, the reflector of the light emitting module is integrally implemented. This may simplify positioning and assembly of the reflector.

According to an embodiment of the utility model, the light emitting module is a lighting and/or signaling module. The light emitting module may generate: illumination beams, such as low beam, high beam, and the like; signal beams, e.g. for direction indication, positioning, braking, etc.; or illuminating and indicating light beams.

Drawings

The utility model is further elucidated below with the aid of the drawing. Wherein the content of the first and second substances,

fig. 1 shows a perspective view of an embodiment of a light emitting module according to the utility model;

fig. 2 shows a carrier of the light emitting module of fig. 1;

fig. 3 illustrates a light source unit of the light emitting module of fig. 1;

fig. 4 shows a reflector unit of the light emitting module of fig. 1;

FIG. 5 shows a lens of the light emitting module of FIG. 1;

fig. 6 shows the assembled carrier and light source unit of the light emitting module of fig. 1;

fig. 7 shows a simplified illustration of the assembled carrier, light source unit and reflector unit of the light emitting module of fig. 1;

FIG. 8 schematically illustrates an optical path diagram of the light emitting module of FIG. 1;

FIG. 9 schematically illustrates another optical path diagram of the light emitting module of FIG. 1;

FIG. 10 shows a simplified top view of the light emitting module of FIG. 1, wherein the light rays reflected by the reflective surface of the reflector are partially shown;

FIG. 11 illustrates a bottom view of the reflector unit of the light module of FIG. 1, showing light rays reflected by a portion of the reflective surface of the reflector unit; and is

Fig. 12 shows a bottom view of the reflector unit of the light emitting module of fig. 1, wherein light rays reflected by another part of the reflecting surface of the reflector unit are shown.

Detailed Description

Embodiments of the present invention are exemplarily described below. As will be realized by those skilled in the art, the illustrated embodiments can be modified in various different ways, without departing from the spirit of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive. In the following, the same reference numbers generally indicate functionally identical or similar elements.

Fig. 1 shows an assembled perspective view of a light module 1 according to the utility model. The light emitting module 1 mainly comprises a cover 2, a carrier 3, a lens 4, and a reflector unit and a light source unit, not shown in fig. 1, arranged in the space defined by the above three parts. The light emitting module 1 has a main light exit direction H. The above-mentioned components of the light emitting module 1 of fig. 1 will be further explained below with reference to fig. 2 to 5. It can be seen that the output surface 44 of the lens 4 is a single continuous surface.

Fig. 2 shows the carrier 3 of the light emitting module 1. The reflector unit 21, the light source unit 5 and the lens 4 may be arranged on the body 30 of the carrier 3. The carrier 3 is thus provided with an associated positioning mechanism. Specifically, the carrier 3 has: positioning holes 39 and screw holes 36 for positioning pins 25 of the reflector unit 21, and screws are screwed into the screw holes 36 through the through holes 26 of the reflector unit 21; positioning pins 32 and threaded holes 34 for the light source unit 5, the positioning pins 32 being received in holes 55 of the carrier 51 of the light source unit 5, screws being screwable through holes 54 of the carrier 51 into the threaded holes 34 of the carrier 3; and a receiving groove 38 for receiving the positioning lug 41 of the lens 4.

The carrier 3 may also be provided with a barrier 35 in the form of a bump. In the assembled state of the light emitting module 1, the barrier 35 is arranged in front of the associated light source of the light source unit 5 in the main light exit direction of the light emitting module 1 to block undesired light. The barrier 35 is preferably opaque.

In addition, for fastening the carrier 3 itself to a support, not shown, a positioning means 33 is provided, which may be in the form of a projection provided with a threaded hole, for example.

It is noted that the above-described positioning mechanisms are merely exemplary, and that other possible positioning mechanisms may be provided as long as they are capable of connecting the above-described components relative to each other, including but not limited to, bonding, snapping, welding, etc.

The carrier 3 may be provided with a heat sink 31 to dissipate heat emitted by the light sources during operation to the surroundings. In order to increase the heat dissipation area, the heat sink 31 may be designed to have a plurality of fins, for example.

The carrier 3 may also be provided with partitions 37 to avoid that the light emitted by different light sources for different functions interfere with each other when they are operated simultaneously, in case the light sources are arranged on the carrier 3. A vertically extending sheet-like partition 37 is shown. Advantageously, the partition 37 is subjected to a light-absorbing treatment, for example provided with a light-absorbing layer.

In the example shown, the carrier 3 is embodied in one piece, i.e. the carrier 3 can be provided integrally with the above-described positioning means, barriers, heat sinks, partitions or combinations thereof, etc., without subsequent separate assembly. Therefore, particularly when the carrier 3 integrally has the above-described positioning mechanism, barrier, heat sink, partition, the carrier 3 is preferably cast from a heat dissipating material, such as aluminum, copper or alloys thereof, or other suitable materials. For example, in the case of forming the carrier 3 by casting using an aluminum alloy, sufficient strength, hardness, and light weight of the carrier can be advantageously secured in terms of cost.

The light source unit 5 has a light source 50 and a connector 58 that electrically connects the light source 50 with an external power supply.

The illustrated light source unit 5 includes a printed circuit board 51, and the light source 50 and the connector 58 are disposed on the printed circuit board 51. The printed circuit board 51 is provided with the above-mentioned holes 54 and holes 55 for positioning and fixing. In particular, the holes 55 for positioning may be a combination of circular holes and elliptical holes, for example. Alternatively, in an example not shown, the light source 50 of the light source unit 5 may be arranged directly on the carrier 3, in particular when the carrier 3 is composed of a metallic heat sink material. Accordingly, the printed circuit board 51 or a corresponding surface of the carrier 3 on which the light source 50 is directly mounted may form the mounting surface 7.

In the case of the printed circuit board 51, the printed circuit board 51 is thermally connected to the carrier 3 or the heat sink 31. For this, a heat conductive medium, for example, a heat conductive paste or a heat conductive sheet, etc., may be applied between the printed circuit board 51 and the heat sink 31.

The light source 50 is preferably mounted close to the edge of the mounting surface 7, as will be further explained below. In fig. 3, with reference to the main light exit direction of the light emitting module 1, the light source 50 is arranged near the front edge of the printed circuit board 51, the shape of which is designed according to practical constraints. To minimize costs, it is preferable to achieve as small a size of the printed circuit board 51 as possible. The printed circuit board 51 leaves an opening 56 for the screen 35 in front of part of the light source, through which opening 56 the screen 35 can protrude, as can be seen particularly clearly in fig. 6.

In order to achieve different functions, the light sources 50 of the light source unit 5 may be divided into different groups. For example, the light source 50 may have: a first light source 52 for a first light function; a second light source 53 for a second light function. Here, the respective light function may be a lighting function, a signaling function or a combination thereof. Therefore, not limited to the above-mentioned first light function, second light function, a light source for a third light function, fourth light function, and the like may also be provided. For example, the first function may be a low beam function and the second function may be a high beam function; or the first function may be a low beam function and the second function a direction indicating function. Only a few examples are listed here and other combinations are also contemplated. The number of light sources for each light function can be chosen according to the actual need. Furthermore, the light sources of the individual light functions can be arranged offset in the main light exit direction and/or in a direction transverse to the main light exit direction in order to achieve the desired light distribution.

Advantageously, the light source 50 is a semiconductor light source, in particular a light emitting diode. The light emitting color of the light source 50 can be selected according to actual needs.

In order to guide the light emitted by the light source 50 in the direction of the lens 4, a reflector unit 21 is provided, which is assigned to the light source unit 5. In fig. 4 it is shown that the reflector unit 21 is formed by one side of the cover 2. In this case, the reflector unit 21 may be formed by applying a metal plating layer (such as an aluminum plating layer) to the respective side surfaces, for example, after the cover body 2 is injection molded. Alternatively, the reflector unit 21 may also be provided separately and fixed on the carrier, wherein such a reflector unit 21 is preferably in one piece. The reflective surface is formed of a material having good heat resistance, such as glass or a synthetic polymer, such as polycarbonate or polyetherimide.

The reflector units 21 may be divided into different reflectors corresponding to light sources for different light functions. For example, the reflector unit 21 may have: a first reflector 22, which is assigned to the first light source 52, receives and reflects light rays emitted by the first light source 52 in the principal light-emitting direction H; and a second reflector 23 which is assigned to the second light source 53, receives and reflects light emitted from the second light source 53 in the principal light-emitting direction H. Each reflector may have a reflective surface assigned to the respective light source, which may be a single continuous surface or a compound reflective surface having multiple sub-continuous surfaces.

Fig. 4 shows an example of a compound reflector, i.e. a first reflector 22 having four reflectors 22A, 22B, 22C, 22D for four light sources of a first light function and a second reflector 23 having five reflectors 23A, 23B, 23C, 23D, 23E for five light sources of a second light function, wherein the reflectors are arranged offset from one another. Of course, a greater number of light sources may be assigned to each reflective surface.

The reflection surfaces of the individual reflectors of the reflector unit 21 may have a parabolic or elliptical profile formed by rotation, and the light source may be arranged, for example, at the focal point of the aforementioned reflection surfaces, wherein a "reflection surface" as referred to herein is to be understood as a single continuous surface of the reflection surface, i.e. in the case of a composite reflection surface having a plurality of sub-continuous surfaces, a "reflection surface" as referred to is a section of the reflection surface. Of course, other forms of reflective surfaces are also contemplated.

The lens 4 is arranged to receive and project light rays reflected by the reflective surface of the light source. The body 40 of the lens 4 has a discontinuous input surface 43, which input surface 43 may be divided into a plurality of sections. In the example of fig. 5, the input surface 43 is divided into 6 sections 43A, 43B, 43C, 43D, 43E, 43F that are joined together, which share a continuous output surface 44. The lens 4 can therefore be seen as being divided into 6 sections 40A, 40B, 40C, 40D, 40E, 40F which form sub-lenses and which cooperate respectively with different groups of light sources for the respective light functions. That is, individual sub-light sources of light sources for the same light function may cooperate with the sub-lenses described above, either individually or in combination. For example, in the example shown, referring to the illustration of fig. 10 (only a portion of the lens sections are labeled with reference numerals for clarity of illustration), the first light sources 52 for the first light function are divided into two groups, one of which has one sub-light source assigned to section 40C and the other group has three sub-light sources assigned to section 40D; while each of the secondary light sources 53 for the second light function is assigned a segment 40A, 40B, 40E, 40F. To prevent light from different groups of sub-light sources from interfering with each other when the light sources are simultaneously operated, a partition 37 is provided between the reflecting surface and the sub-lens. It is noted that the above described division of the input surface of the lens 4 and the light sources is merely exemplary, and different divisions may also be envisaged depending on the required light distribution. Each section of the lens 4 may be used to form a given area of desired light distribution.

The individual segments of the lens 4 have their own optical axis 6, which corresponds to the main light exit direction of the light emitting module.

The lens 4 is held in the accommodation groove 38 of the carrier 3 by a lug 41 connected to the body 40. The lugs 41 can have projections 42 which are inserted into the bottom of the receiving grooves 38, and the cover 2 can be placed against the side of the lugs 41 opposite the projections 42 in the assembled state, whereby the lens is fixed.

The lens 4 is preferably in one piece and may be made of a transparent thermoplastic polymer, such as polycarbonate or polymethylmethacrylate. The input and output surfaces of the lens may also be formed of silicone or other transparent material, depending on the desired index of refraction.

Each sub-lens has its own focal point F1, F2. The focal location is preferably a focal line, which falls at the associated reflective surface. The lenses 4 are thus configured to form a light distribution associated with the reflecting surface of the associated reflector, respectively. In particular, in the example shown, with reference to the propagation direction of the light rays along the main light-exit direction H, the reflective surfaces 22A, 22B, 22C, 22D, 23A, 23B, 23C, 23D, 23E of the respective reflectors 22, 23 have a front edge 22A1, 22B1, 22C1, 22D1, 23A1, 23B1, 23C1, 23D1, 23E1 and a rear edge 22A2, 22B2, 22C2, 22D2, 23A2, 23B2, 23C2, 23D2, 23E2, wherein, in the operating position of the light-emitting module 1, the lens is configured such that the front edge is associated with a lower part of the light distribution and the rear edge is associated with an upper part of the light distribution

The I-focus location F1 may be at the rear edge 22A2, 22B2, 22C2, 22D2 of the reflective surface 22A, 22B, 22C, 22D of the respective reflector 22, or near the rear edge 22A2, 22B2, 22C2, 22D2, such that the front edge forms a lower portion of the light distribution and the rear edge forms an upper portion of the light distribution, wherein the upper portion forms a boundary of the light distribution relative to the area not illuminated by the light beam; and/or

The II focus locations F2 may be located at the reflective surfaces 23A, 23B, 23C, 23D, 23E of the respective reflector 23, at or near the middle between the front edge 23A1, 23B1, 23C1, 23D1, 23E1 and the rear edge 23A2, 23B2, 23C2, 23D2, 23E2, the focus locations thus dividing the reflective surfaces into an upper reflective portion 23O and a lower reflective portion 23U, such that when the optical axis 6 of the corresponding sub-lens passes through the focus location F2, the resulting light distribution can be seen to be on both sides of the optical axis 6.

In the case I described above, this therefore applies in particular to the formation of the low beam function, for which only the rear edge of the reflection surface has to be designed to match. In case II this applies in particular to form the high beam function or a part of the high beam function, or to form other signal beam functions.

It is to be noted here that the distance of the focus points F1, F2 with respect to the rear edge 22a2, 22B2, 22C2, 22D2 and/or the middle is in the range of less than 10mm, preferably in the range of less than 5 mm.

Thus, the light source 50, the reflector unit 21 may be arranged on the same mounting surface 7 on the carrier 3 (see fig. 7). This makes it possible in particular for reflectors for achieving the low-beam function and the high-beam function to be arranged on the same side of the mounting surface, in order to achieve a small height dimension of the light exit surface of the light emitting module 1, i.e. of the lens 4, which may be, for example, less than 25mm or less in height. For this reason, for the reflector 22 for realizing the low beam function, the focusing point of the corresponding sub-lens falls at or near the rear edge of the reflection surface; for the reflector 23 for realizing the high beam function, the focusing point of the corresponding sub-lens is at the middle between the front edge and the rear edge or near the middle on the reflection surface.

The projection of some of the reflection surfaces of the reflectors for low-beam light function, such as the rear edges 22B2, 22C2, 22D2 of the reflection surfaces 22B, 22C, 22D, in the operating position of the light module 1 in a plane perpendicular to the optical axis 6 of the sub-lenses, can have a straight extent, so that a horizontal cut-off of the low-beam light distribution is formed; a projection of the rear edge 22A2 of the other one of the reflective surfaces 22A in a plane perpendicular to the sub-lens optical axis 6 has two straight extensions and an intermediate portion bridging the two straight extensions. According to the corresponding legislation, the intermediate portion may tiltably connect two straight extensions offset vertically, for example at an angle of 15 ° or 45 °; the two straight extensions may also be collinear and connected by a convex or concave middle portion. In summary, the course of the rear edge of the reflection surface of the reflector for the low-beam function is designed according to the cut-off profile of the low-beam light distribution required by the regulations.

If the reflector surfaces of the reflector are used for other light functions, in particular the front and rear edges of the reflector surfaces can be designed in accordance with the desired shape of the light distribution, similarly to the reflector surfaces of the above-described reflector for low beam light functions.

For a continuous single reflecting surface of the reflector, the rear edge forming the peripheral edge of the reflecting surface can be connected to the front edge extending directly in the plane of the rear edge or by an intermediate edge in the other side. As best seen in fig. 4, the reflective surface 22C has a middle edge 22C3 between its front and rear edges 22C1 and 22C2, the middle edge 22C3 being non-coplanar with either of the front and rear edges 22C1 and 22C 2; the rear edge 23A2 of the reflective surface 23A extends to meet the front edge 23A1 on one side and connects to the front edge 22a1 on the other side through an intermediate edge 23A 3. In other words, the light distribution to be finally formed can be adapted by such a flexible design of the reflective surface.

In addition to the mounting surface 7 being arranged parallel to the main light exit direction of the light emitting module, an embodiment of the light emitting module 1 is shown in fig. 7 and 8, in which the mounting surface 7 is arranged obliquely with respect to the optical axis 6, the mounting surface 7 being formed by a printed circuit board 51 or carrier 3 fitted with a light source. The mounting surface 7 forms an inclination angle α with respect to the optical axis 6 of 20 ° or less, preferably 15 ° or less, preferably 10 ° or less, preferably 5 ° or less. With this arrangement, in the case where the light emission angle of the light source is not 180 °, the light source can be made to better illuminate the rear edge of the reflection surface or the region immediately adjacent to the rear edge.

The minimum distance of the rear edge from the light source is in the range between 1mm and 5 mm. This enables a compact construction while ensuring illumination of the reflective surface.

The light paths in the case of a continuous single reflecting surface with an elliptical profile are shown in fig. 11 and 12. It can be seen that the light emitted by the light source is collected near the relevant section of the lens after being reflected by the reflecting surface, so that the width of the light beam on the incident surface of the lens can be reduced.

The light module according to the utility model can be used as a lighting and/or signaling module in a vehicle lamp. Thus, the light emitting module can generate: illumination beams, such as low beam, high beam, and the like; signal beams, e.g. for direction indication, positioning, braking, etc.; or illuminating and indicating light beams.

The present invention is not limited to the above configuration, and various other modifications may be adopted. While the utility model has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this disclosure, will appreciate that other embodiments can be devised which do not depart from the scope of the utility model as disclosed herein. Accordingly, the scope of the utility model should be limited only by the attached claims.

Claims (25)

1. A light emitting module (1) for a vehicle, the light emitting module (1) having a main light exit direction (H) and comprising:

a first light source (52), the first light source (52) for a first light function;

a first reflector (22), said first reflector (22) receiving and reflecting light emitted by said first light source (52) in said main light exit direction (H);

a second light source (53), the second light source (53) for a second light function;

a second reflector (23), said second reflector (23) receiving and reflecting light emitted by said second light source (53) in said main light emission direction (H);

a carrier (3), the first light source (52), the first reflector (22), the second light source (53) and the second reflector (23) being arranged on the carrier (3);

a lens (4), the lens (4) projecting light rays of the first light source (52) and the second light source (53) reflected by the respective reflectors,

characterized in that the lens (4) is configured to form a light distribution associated with the reflective surfaces of the first and second reflectors (22, 23), respectively, and

the first light source (52), the first reflector (22), the second light source (53) and the second reflector (23) are arranged on the same mounting surface (7) on the carrier (3).

2. Light emitting module (1) according to claim 1, characterized in that the lens (4) is in one piece and has sections (40A-40F) assigned to the respective reflectors, the sections (40A-40F) having respective focusing locations (F1, F2) and an optical axis (6) corresponding to the main light exit direction (H).

3. Light emitting module (1) according to claim 2, characterized in that the reflection face of the respective reflector has a front edge and a rear edge with reference to a propagation direction of a light ray along the main light exit direction, wherein the front edge is associated with a lower part of the light distribution and the rear edge is associated with an upper part of the light distribution in an operating position of the light emitting module (1), wherein,

-the focus location (F1, F2) is at a rear edge (22a2, 22B2, 22C2, 22D2) of the reflective surface of the respective reflector, or in the vicinity of the rear edge (22a2, 22B2, 22C2, 22D 2); and/or

-the focus location (F1, F2) is at a middle between the front edge and the rear edge, or near the middle, on the reflective surface of the respective reflector.

4. The lighting module (1) according to claim 3, characterized in that the distance of the focus point (F1, F2) with respect to the rear edge (22A2, 22B2, 22C2, 22D2) and/or the middle portion is in a spatial range of less than 10 mm.

5. The lighting module (1) according to claim 4, characterized in that the distance of the focus point (F1, F2) with respect to the rear edge (22A2, 22B2, 22C2, 22D2) and/or the middle portion is in a spatial range of less than 5 mm.

6. Light emitting module (1) according to claim 3, characterized in that the first light function and the second light function may comprise one or more of a low-beam function, a high-beam function, a signaling function, respectively.

7. A light emitting module (1) according to claim 3, characterized in that at least one of the first light source (52) and the second light source (53) is provided with a barrier (35), which barrier (35) is arranged in front of the respective light source with reference to the main light exit direction (H) to receive light rays of the light source propagating forward in the main light exit direction (H) and not reflected by the reflecting surface.

8. Light emitting module (1) according to claim 7, characterized in that the barrier (35) is opaque.

9. A light emitting module (1) according to claim 3, characterized in that the mounting surface (7) forms an inclination angle (α) with respect to the main light exit direction (H), which is smaller than or equal to 20 °.

10. Light emitting module (1) according to claim 9, characterized in that the tilting angle is smaller than or equal to 15 °.

11. Light emitting module (1) according to claim 9, characterized in that the tilting angle is smaller than or equal to 10 °.

12. Light emitting module (1) according to claim 9, characterized in that the tilting angle is smaller than or equal to 5 °.

13. Light emitting module (1) according to claim 3, characterized in that the minimum distance of the rear edge from the light source is in the range between 1mm and 5 mm.

14. The light emitting module (1) according to any one of claims 1 to 13, characterized in that the first light source (52) and the second light source (53) are semiconductor-type light sources.

15. The lighting module (1) according to claim 14, characterized in that the first light source (52) and the second light source (53) are arranged on a printed circuit board (51).

16. The lighting module (1) according to claim 15, characterized in that the first light source (52) and the second light source (53) are arranged close to an edge of the printed circuit board (51).

17. Light emitting module (1) according to claim 15, characterized in that at least one of the first light source (52) and the second light source (53) is provided with a barrier (35), which barrier (35) is arranged in front of the respective light source with reference to the main light exit direction (H) to receive light rays of the light source propagating forward in the main light exit direction (H) and not reflected by the reflecting surface, the printed circuit board (51) having an indentation (56) for the barrier (35).

18. Light emitting module (1) according to one of the claims 1 to 13, characterized in that the reflecting surface of the reflector has a parabolic or elliptical profile.

19. The lighting module (1) according to any of claims 1 to 13, characterized in that the carrier (3) is a unitary piece of heat sink material.

20. The lighting module (1) according to any one of claims 1 to 13, characterized in that the carrier (3) is provided with a partition (37), which partition (37) extends vertically in the operating position of the lighting module (1).

21. Light emitting module (1) according to claim 20, characterized in that the partition (37) is light absorbing.

22. Light emitting module (1) according to one of the claims 1 to 13, characterized in that the reflector of the light emitting module (1) is integrally implemented.

23. The lighting module (1) according to any one of claims 2 to 13, characterized in that the focus point (F1, F2) is a focal line.

24. Light emitting module (1) according to any one of claims 1 to 13, characterized in that the light emitting module (1) is a lighting and/or signaling module.

25. A vehicle, characterized in that it has a light module (1) according to any one of claims 1 to 24.

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