Lighting module and motor vehicle

Abstract

The application provides a lighting module (100) comprising: a light source (10) configured to emit light along a main light emitting direction (X) of the lighting module; the lens (20) is arranged in front of the light source, the lens comprises a light inlet surface (21), a light outlet surface (22) and a side surface (23), the light inlet surface and the light outlet surface are oppositely arranged, and the side surface is connected between the light inlet surface and the light outlet surface; wherein the light incident surface is configured to receive the light emitted by the light source, the side surface is configured to reflect at least part of the light, and the light emergent surface is configured to project the light along the main light emergent direction and form a pattern of the light incident surface.

Description

Technical Field

[0001] This application relates to the field of lighting technology, and more specifically, to a lighting module and a motor vehicle. Background Technology

[0002] In the field of lighting technology, various lighting or signaling devices are known for providing light for illumination or signal indication. For example, vehicle lights are used in motor vehicles to provide lighting or signaling functions to ensure safe driving or to provide decorative functions.

[0003] Referring to patent publication CN222523522A, the applicant knows of an illumination module comprising a light source, a light collector, and a lens. The reflective surface of the light collector collects light emitted from the light source and reflects it into a beam, which is then projected out through a lens to form an image of the reflective surface of the light collector. In order to ensure that the emitted light pattern meets the width range required by regulations, the lens is usually relatively wide, resulting in a large overall width of the illumination module; moreover, the placement of the light collector makes the structure of the entire illumination module relatively complex and inconvenient to assemble.

[0004] Therefore, it is urgent to propose a lighting module with a simpler and more compact structure. Summary of the Invention

[0005] One objective of this application is to overcome at least one of the problems and defects existing in the prior art.

[0006] The first aspect of this application provides a lighting module comprising:

[0007] A light source, configured to emit light along the main light-emitting direction of the illumination module; and

[0008] A lens is disposed in front of the light source. The lens includes an incident surface, an exit surface, and a side surface. The incident surface and the exit surface are disposed opposite to each other, and the side surface is connected between the incident surface and the exit surface.

[0009] The light-incident surface is configured to receive the light emitted by the light source, the side surface is configured to reflect at least a portion of the light, and the light-emitting surface is configured to project the light along the main light-emitting direction and form a pattern on the light-incident surface.

[0010] In some embodiments, the focal point of the light-emitting surface is located at a distance of less than 10 mm from the light-incident surface.

[0011] In some embodiments, the focal point of the light-emitting surface is located on the light-incident surface.

[0012] In some embodiments, the light-incident surface includes an edge forming a cutoff line.

[0013] In some embodiments, the focal point of the light-emitting surface is located at a position less than 10 mm from the edge.

[0014] In some embodiments, the focal point of the light-emitting surface is located on the edge.

[0015] In some embodiments, the edge is located at the lower end of the light-incident surface, and the lighting module serves as a low beam headlight for a motor vehicle.

[0016] In some embodiments, the focal point of the light-emitting surface is located in the upper half of the light-incident surface, and the lighting module is used as the high beam of a motor vehicle.

[0017] In some embodiments, the side surface includes a left side and a right side disposed opposite to each other. Light reflected by the left side and the right side is emitted as a wide beam through the light-emitting surface. The angle between the wide beam and the main light-emitting direction is between -60° and +60°.

[0018] In some embodiments, the width of the lens is less than 20 mm or less than 15 mm.

[0019] A second aspect of this application provides a motor vehicle that includes a lighting module as provided in the first aspect and the embodiments described above. Attached Figure Description

[0020] Figure 1 A side view of the lighting module provided in the first embodiment of this application;

[0021] Figure 2 for Figure 1 A top view of the lighting module shown;

[0022] Figure 3 for Figure 1 The simulation diagram of the light output pattern of the lighting module is shown.

[0023] Figure 4 This is a side view of the lighting module provided in the second embodiment of this application. Detailed Implementation

[0024] The embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be understood that the embodiments of this application are primarily intended to illustrate possible implementations of the technical solutions of this application and should not be construed as limiting the technical solutions of this application. In this specification, identical or similar components are indicated by identical or similar reference numerals.

[0025] Figure 1 This is a side view of the lighting module 100 provided in the first embodiment of this application. Figure 2 for Figure 1 A top view of the lighting module 100 shown; Figure 3 for Figure 1 A simulation diagram of the light emission pattern of the lighting module 100 is shown. (As shown...) Figure 1-3 As shown, the first embodiment of this application provides a lighting module 100, which can be used as a low beam (LB) or high beam (HB) headlight of a motor vehicle. The lighting module 100 can project light along the main light emission direction X to the front. When the lighting module 100 is installed on a motor vehicle, the main light emission direction X can be, for example, the front of the motor vehicle, to illuminate the area in front of the motor vehicle and improve driving safety.

[0026] The lighting module 100 includes a light source 10 and a lens 20. The light source 10 is configured to emit light along the main light emission direction X of the lighting module 100, that is, the main light emission axis O of the light source 10 extends along the main light emission direction X. The light source 10 is disposed on a circuit board 11. The lens 20 is disposed in front of the light source 10, and the light emitted by the light source 10 directly enters the lens 20 without passing through an additional light collector. The lens 20 includes an incident surface 21, an emitting surface 22, and a side surface 23. The incident surface 21 and the emitting surface 22 are disposed opposite to each other, and the side surface 23 connects the incident surface 21 and the emitting surface 22. In a first embodiment, the side surface 23 includes a left side surface 231, a right side surface 232, an upper side surface 233, and a lower side surface 234, wherein the left side surface 231 and the right side surface 232 are disposed opposite to each other, and the upper side surface 233 and the lower side surface 234 are disposed opposite to each other. The light-incident surface 21 is configured to receive light emitted from the light source 10, the side surface 23 is configured to reflect at least a portion of the light received by the light-incident surface 21, and the light-exiting surface 22 is configured to project light along the main light-exiting direction X, forming a pattern on the light-incident surface 21. A portion of the light received by the light-incident surface 21 is directly transmitted to the light-exiting surface 22 and emitted from it without being reflected by the side surface 23; the other portion of the light received by the light-incident surface 21 is first reflected by the side surface 23 before being transmitted to the light-exiting surface 22 and emitted from it.

[0027] In this first embodiment, at least a portion of the light received by the incident surface 21 is reflected by the side surface 23 of the lens 20 and then emitted. In particular, the light reflected by the left side surface 231 and the right side surface 232 is emitted through the emitting surface 22 as a broad beam L. The broad beam L has a large divergence angle; for example, the angle between the broad beam L and the main emission direction X is between -60° and +60°. The light extraction efficiency can also reach more than 50%. This allows the size of the lighting module 100 in the lateral direction Y to be shortened, i.e., the same light extraction width can be achieved using a lens 20 with a smaller width, wherein the lateral direction Y is perpendicular to the main emission direction X. In some embodiments, the width of the lens 20 is less than 20 mm, or even less than 15 mm. This makes the structure of the lighting module 100 more compact, and the smaller size of the lighting module 100 is of great significance in applications of motor vehicles. Furthermore, since the light pattern is achieved by only one lens 20, there is no need to set up an additional light collector, which not only further reduces the size of the lighting module 100 but also saves costs.

[0028] It is worth noting that in this embodiment, the left side 231 and right side 232 are designed as total internal reflection surfaces, thus utilizing the principle of total internal reflection to reflect light incident upon them. Besides the left side 231 and right side 232 being total internal reflection surfaces, the upper side 233 and lower side 234 can also be total internal reflection surfaces. The light reflected from the upper side 233 and lower side 234 can result in a larger light profile, meeting the requirements of optical regulations for motor vehicles. In addition to designing the side 23 as a total internal reflection surface to achieve light reflection, in some other embodiments, aluminum plating or film coating can be applied to the side 23 to achieve light reflection. Although this is slightly more complex in terms of manufacturing process, it can achieve higher reflection efficiency. The lens 20 can be a diopter lens, with its width reduced to 15mm and its height approximately 30mm. The entire structure is very compact and has a more unique shape.

[0029] To make the image formed on the incident light surface 21 by the light emitted from the light-emitting surface 22 of the lens 20 clearer, in some embodiments, the focal point f of the light-emitting surface 22 can be set at a position less than 10 mm away from the incident light surface 21. Preferably, the focal point of the light-emitting surface 22 can be located on the incident light surface 21, thereby clearly presenting the image of the incident light surface 21 as the emitted light pattern.

[0030] When the lighting module 100 is used as a low beam lamp, since low beam lamps are required to have a cutoff line as mandated by regulations, an edge for forming the cutoff line can be provided on the light-incident surface 21. To make the cutoff line clearer, the focal point f of the light-emitting surface 22 can be set at a position less than 10 mm from the edge of the cutoff line. Preferably, the focal point f of the light-emitting surface 22 is located on this edge.

[0031] like Figure 1As shown, light reflected from the left side 231 passes through the light-emitting surface 22 and exits to the right, while light reflected from the right side 232 passes through the light-emitting surface 22 and exits to the left. Correspondingly, light reflected from the upper side 233 passes through the light-emitting surface 22 and exits downwards, while light reflected from the lower side 234 passes through the light-emitting surface 22 and exits upwards. The light-emitting pattern formed by the light-emitting surface 22 is an inverted image of the light-incident surface 21. In the low beam pattern, the cutoff line is usually the upper boundary of the beam pattern. Therefore, an edge forming the cutoff line can be provided at the lower end of the light-incident surface 21 to form a cutoff line in the low beam pattern, and the lighting module 100 is used as a low beam headlight for a motor vehicle. It is worth noting that the lower end of the light-incident surface 21 refers to the lower end of the light-incident surface 21 along the height direction Z, where the height direction Z is perpendicular to the main light-emitting direction X and the lateral direction Y. This lower end is connected to the lower side 234.

[0032] Figure 4 This is a side view of the lighting module 100 provided in the second embodiment of this application. Figure 4 As shown, the focal point f of the light-emitting surface 22 is located in the upper half of the light-incident surface 21, that is, above the main light-emitting axis O along the height direction Z, to form a high beam pattern. In this case, the lighting module 100 can be used as the high beam headlight of a motor vehicle. Other features in the lighting module 100 of the second embodiment are the same as or similar to the corresponding features in the lighting module 100 of the first embodiment, and will not be repeated here.

[0033] Embodiments of this application also provide a motor vehicle that includes the lighting module 100 described in any of the above embodiments. The motor vehicle may be an electric vehicle, a gasoline-powered vehicle, or a hybrid vehicle.

[0034] Although this application has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of this application and should not be construed as limiting this application. The dimensions and proportions in the drawings are merely illustrative and should not be construed as limiting this application.

[0035] While some embodiments of the general concept of this application have been shown and described, those skilled in the art will understand that this application may include many other equivalent embodiments without departing from the general inventive concept of this application, and the scope of protection of this application is defined by the claims.

Claims

1. A lighting module (100), characterized by Comprising: a light source (10) configured to emit light rays along a main light emission direction (X) of the illumination module; and a lens (20) disposed in front of the light source, the lens comprising an entrance face (21), an exit face (22) and a side face (23), the entrance face and the exit face being oppositely disposed, the side face being connected between the entrance face and the exit face; wherein the entrance face is configured to receive the light rays emitted by the light source, the side face is configured to reflect at least part of the light rays, and the exit face is configured to project the light rays along the main light emission direction and form a pattern of the entrance face. The focal point (f) of the exit face is located at a position less than 10 mm from the entrance face.

2. The lighting module according to claim 1, wherein, The focal point of the exit face is located on the entrance face.

3. The lighting module according to claim 2, wherein, The entrance face comprises an edge forming a cut-off line.

4. The lighting module of claim 1, wherein, The focal point of the exit face is located at a position less than 10 mm from the edge.

5. The lighting module of claim 4, wherein, The focal point of the exit face is located on the edge.

6. The lighting module of claim 5, wherein, The edge is located at a lower end of the entrance face, and the illumination module is used as a low beam of a motor vehicle.

7. The lighting module of claim 4, wherein, The focal point of the exit face is located at an upper half of the entrance face, and the illumination module is used as a high beam of a motor vehicle.

8. The lighting module of claim 4, wherein, The side face (23) comprises oppositely disposed left and right side faces (231, 232), and light rays reflected by the left and right side faces exit through the exit face as a wide light beam (L) having an angle with respect to the main light emission direction between -60° and +60°.

9. The lighting module of claim 1, wherein, The lens has a width less than 20 mm, or less than 15 mm.

10. The lighting module of claim 1, wherein, The motor vehicle comprises the illumination module according to any one of claims 1-10.

11. A motor vehicle characterised in that, ​

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