Lamp assembly, method for making lamp assembly, and motor vehicle

Abstract

The present invention discloses a lamp assembly (100), a method for making a lamp assembly, and a motor vehicle. The lamp assembly (100) comprises multiple light sources (10) arranged at intervals in an extension direction (E) of the lamp assembly (100); a second optical structure layer (30) being arranged in a light output direction of the light sources (10), the second optical structure layer (30) being configured to receive and deflect light from the light sources (10), such that a portion of the light emerges from a region (Z) corresponding to a part between two adjacent light sources (10), wherein the second optical structure layer (30) is formed of a transparent material and includes a collimating structure (310) on a surface facing the light sources (10), being configured to collimate at least a portion of the received light; and a light diffusing structure (330) on a surface facing away from the light sources (10), being configured to scatter light emerging from the second optical structure layer (30).

Description

Lamp assembly, method for making lamp assembly, and motor vehicle

[0001] The present invention relates to a lamp assembly, a method for making a lamp assembly, and a motor vehicle.

[0002] In an arrangement of a vehicle lamp assembly comprising multiple light sources, light from the light sources passes through an interior structure of the vehicle lamp assembly and is transmitted to the outside, so as to achieve an illumination effect. In existing vehicle lamp assemblies made by an extrusion process, in cases where the number of light sources is restricted or there are requirements regarding light output efficiency, the uniformity of optical distribution and the illumination effect are unable to satisfy actual requirements in some regions.Summary of the Invention

[0003] The object of the present invention is to provide a lamp assembly, a method for making a lamp assembly, and a motor vehicle. The lamp assembly can improve optical distribution uniformity and reduce costs while maintaining light output efficiency.

[0004] In one aspect, a lamp assembly is provided, comprising: multiple light sources, arranged at intervals in an extension direction of the lamp assembly; a second optical structure layer, the second optical structure layer being arranged in a light output direction of the light sources, the second optical structure layer being configured to receive and deflect light from the multiple light sources, such that a portion of the light emerges from a region corresponding to a part between two adjacent light sources.

[0005] In an embodiment, the second optical structure layer is provided with a collimating structure on a surface facing the light sources, the collimating structure being configured to collimate at least a portion of the received light;

[0006] the second optical structure layer is provided with a light diffusing structure on a surface facing away from the light sources, the light diffusing structure being configured to scatter light emerging from the second optical structure layer;

[0007] the second optical structure layer is formed of a transparent material.

[0008] In an embodiment, the lamp assembly further comprises a first optical structure layer, the first optical structure layer being arranged in the light output direction of the light sources, the second optical structure layer being arranged at the opposite side of the first optical structure layer from the light sources and separated from the first optical structure layer, the first optical structure layer being configured to cause at least a portion of light from each light source to be deflected away from the light source in the extension direction of the lamp assembly.

[0009] In an embodiment, the first optical structure layer comprises multiple lens structures, the multiple lens structures being arranged in one-to-one correspondence with the multiple light sources.

[0010] In an embodiment, the second optical structure layer is provided with multiple collimating structures on the surface facing the light sources, the multiple collimating structures being arranged to be connected to each other in the region corresponding to the part between two adjacent light sources, and configured to collimate at least a portion of the received light, so that it emerges substantially in an optical axis direction of the light sources, the optical axis direction being perpendicular to the extension direction; wherein an angle between the optical axis direction and the light collimated by the collimating structures is less than 10°.

[0011] In an embodiment, the multiple light sources, the multiple lens structures and the multiple collimating structures are in one-to-one correspondence with each other, and centred relative to each other.

[0012] In an embodiment, the second optical structure layer is provided with a corrugation structure on a surface facing the light sources, the corrugation structure being arranged continuously in the extension direction, and configured to deflect and scatter at least a portion of the received light.

[0013] In an embodiment, the second optical structure layer is provided with a light diffusing structure on a surface facing away from the light sources, the light diffusing structure being configured to scatter light emerging from the second optical structure layer.

[0014] In an embodiment, the first optical structure layer is made by an injection moulding process on the multiple light sources, such that each light source is tightly enclosed in each lens structure of the first optical structure layer.

[0015] In an embodiment, the first optical structure layer and the second optical structure layer are arranged parallel to each other.

[0016] In an embodiment, the first optical structure layer and the second optical structure layer are formed of a transparent material.

[0017] In an embodiment, the second optical structure layer contains no diffusing agent; or the second optical structure layer contains a small amount of a diffusing agent, and the second optical structure layer has a haze less than 30%.

[0018] In an embodiment, the lamp assembly further comprises a support structure, the support structure being configured to connect and support the first optical structure layer and the second optical structure layer.

[0019] In an embodiment, the support structure comprises a middle support part and an outer support part; the middle support part is made of a transparent material, and the outer support part is made of an opaque material;

[0020] the middle support part is deployed between the first optical structure layer and the second optical structure layer; inner surfaces at two sides of the outer support part are used as reflective faces, to reflect light emitted by the light sources towards a light output face.

[0021] In an embodiment, the collimating structure is a single collimating structure, which takes the form of a curved surface protruding towards the multiple light sources, the curved surface extending from one end of the second optical structure to another end thereof in the extension direction.

[0022] In another aspect, a method for making a lamp assembly is provided, the method comprising: providing multiple light sources on a printed circuit board, to form a lamp board; performing an injection moulding process, to form a first optical structure layer on the lamp board directly by injection moulding; performing a first extrusion process, to extrude a main body of a second optical structure layer, and separately forming different optical structures on opposite surfaces of the main body by roller-pressing, to obtain the second optical structure layer; performing a second extrusion process, using the lamp board, the first optical structure layer and the second optical structure layer to perform secondary extrusion, such that a support structure is formed to achieve mutual connection and form the lamp assembly.

[0023] In an embodiment, the injection moulding process further comprises: placing the lamp board into a mould of the first optical structure layer and performing injection moulding, the mould being provided with multiple lens structures in one-to-one correspondence with the multiple light sources; and the first extrusion process further comprises: using a first roller-pressing device to roller-press one of the opposite surfaces of the main body, a surface of the first roller-pressing device being a grid-like curved surface, so as to form a light diffusing structure; using a second roller-pressing device to roller-press the other surface of the main body, a surface of the second roller-pressing device being a collimating curved surface or a corrugated curved surface, so as to form a collimating structure or a corrugation structure.

[0024] In another aspect, a motor vehicle is provided, the motor vehicle comprising the lamp assembly according to an embodiment of the present invention.Brief Description of the Drawings

[0025] shows a side view of a first embodiment of a lamp assembly according to embodiments of the present invention.

[0026] shows a side view of a second embodiment of a lamp assembly according to embodiments of the present invention.

[0027] shows a 3D drawing of a first optical structure layer according to the first and second embodiments of the present invention.

[0028] shows a 3D drawing of a second optical structure layer with collimating structures according to the first embodiment of the present invention.

[0029] shows an optical path diagram of the lamp assembly with collimating structures according to the first embodiment of the present invention.

[0030] shows a 3D drawing of a second optical structure layer with a corrugation structure according to the second embodiment of the present invention.

[0031] shows a 3D drawing of the second optical structure layer shown in, viewed from another angle, according to the second embodiment of the present invention.

[0032] shows an optical path diagram of the second optical structure layer with the corrugation structure according to the second embodiment of the present invention.

[0033] shows a 3D drawing of a lamp assembly according to an embodiment of the present invention.

[0034] shows a 3D drawing of a lamp assembly according to another embodiment of the present invention.

[0035] shows a 3D drawing of a lamp assembly according to a third embodiment of the present invention.

[0036] shows a schematic drawing of section A-A of the lamp assembly shown in.

[0037] shows a schematic drawing of section B-B of the lamp assembly shown in.Detailed Description of the Invention

[0038] The technical solution of the present invention is explained in further detail below by means of embodiments, in conjunction with the accompanying drawings. In this Description, identical or similar reference signs denote identical or similar components. The following explanation of embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention, and should not be interpreted as a limitation of the present invention.

[0039] In addition, in the following detailed description, to facilitate explanation, many specific details are expounded to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is obvious that one or more embodiments may also be implemented without these specific details.

[0040] shows a side view of a first embodiment of a lamp assembly 100 according to embodiments of the present invention.shows a side view of a second embodiment of a lamp assembly 100 according to embodiments of the present invention.

[0041] The lamp assembly 100 according to embodiments of the present invention may comprise multiple light sources 10, as shown inand. As an example, when the lamp assembly 100 is placed in a straight line, the multiple light sources 10 may be arranged equidistantly from each other on a printed circuit board 50, and have the same light output direction, so as to emit light together to achieve illumination. As an example, the printed circuit board 50 may be a flexible printed circuit board, and the entire lamp assembly 100 may be flexible and used as a flexible lamp strip, so as to achieve a variety of lighting styles by bending the lamp assembly 100. However, the embodiments of the present invention are not limited to this.

[0042] The lamp assembly 100 may also comprise a first optical structure layer 20. As shown inand, the first optical structure layer 20 may be arranged in a light output direction of the multiple light sources 10, so as to be positioned above the multiple light sources 10, such that the light emitted from each light source 10 needs to pass through the first optical structure layer 20 to travel outwards.

[0043] shows a 3D drawing of the first optical structure layer 20 according to the first and second embodiments of the present invention. As shown in Figures 1 to 3, in conjunction with, the first optical structure layer 20 may be provided with multiple lens structures 210. According to embodiments of the present invention, the multiple light sources 10 and the multiple lens structures 210 may be arranged in one-to-one correspondence, so that the light emitted from each light source 10 needs to pass through the respective lens structure 210 to travel outwards. According to embodiments of the present invention, the lens structure 210 may be configured to cause at least a portion of the light from the respective light source 10 to be deflected away from the corresponding light source 10 in an extension direction E of the lamp assembly 100. For example, at least a portion of light in a central region of the light source 10 would originally travel substantially in an optical axis direction O of the light source 10. When passing through the lens structure 210, the light will change to travelling away from the optical axis direction O at two sides, due to the deflecting action of the lens structure 210. In this way, a portion of light in the central region of the light source 10 can be distributed to other regions, such as a part between two adjacent light sources 10, thereby weakening the intensity of light in the central region, and increasing the intensity of light in a region in the vicinity of each light source 10, so as to increase the uniformity of optical distribution of the lamp assembly 100 and improve the illumination effect.

[0044] The lamp assembly 100 may also comprise a second optical structure layer 30. As shown inand, the second optical structure layer 30 may be arranged at the opposite side of the first optical structure layer 20 from the light source 10, and separated from the first optical structure layer 20. According to embodiments of the present invention, light passing through the first optical structure layer 20 will travel to the second optical structure layer 30, and needs to pass through the second optical structure layer 30 in order to be emitted outwards. Thus, the second optical structure layer 30 is configured to receive light from the first optical structure layer 20. In addition, as shown inand, a variety of optical structures (for example, 310, 320, 330) may be provided on the second optical structure layer 30. These optical structures may further cause light from the first optical structure layer 20 to be deflected (e.g. performing a collimating and / or scattering action), thereby guiding a portion of light to emerge from a region (e.g. region Z) corresponding to the part between two adjacent light sources 10. The region Z may be a space corresponding to a space between two adjacent light sources 10 in a thickness direction of the lamp assembly 100, the thickness direction of the lamp assembly 100 being perpendicular to a length direction of the lamp assembly 100. In, the thickness direction of the lamp assembly 100 is the optical axis direction O of the light source, also called the main light emission direction, and the length direction is the extension direction E of the lamp assembly 100.

[0045] In this way, as a result of providing the first optical structure layer 20 and the second optical structure layer 30 in the lamp assembly 100, to cooperatively and synergistically adjust a route of travel of at least a portion of light from the light source 10 with the aid of a first deflecting action provided by the first optical structure layer 20 and a second deflecting action provided by the second optical structure layer 30, light emitted from a region corresponding to the central region of the light source is weakened, and light emitted from the region corresponding to the part between two adjacent light sources 10 is increased. Thus, the synergistic deflecting action of the first optical structure layer 20 and the second optical structure layer 30 ensures that a portion of light from the light source emerges from the region Z corresponding to the part between two adjacent light sources 10, and the amount of light at different parts is uniform, thereby improving the uniformity of optical distribution to provide a good illumination effect and a good visual effect.

[0046] In addition, providing the first optical structure layer 20 and the second optical structure layer 30 to improve uniformity can obviate the need to arrange multiple light sources 10 close together, thereby reducing costs, and reducing the impact which heat from the light sources has on surrounding structures, so as to increase the service life of the lamp assembly 100. In addition, it is also possible to avoid providing an additional diffusing material at a light outlet of the lamp assembly 100, thus reducing the impact on light output efficiency and ensuring the illumination effect.

[0047] In one embodiment, as shown in, the second optical structure layer 30 is provided with multiple collimating structures 310 on a surface facing the light sources 10.shows a 3D drawing of the second optical structure layer 30 with the collimating structures 310 according to the first embodiment of the present invention.shows an optical path diagram of the lamp assembly 100 with the collimating structures 310 according to the first embodiment of the present invention.

[0048] As shown in,and, the multiple collimating structures 310 are arranged in one-to-one correspondence with the multiple light sources 10 and the multiple lens structures 210, so that each collimating structure 310 is able to receive light which is emitted from the corresponding light source 10 and which passes through the corresponding lens structure 210, and collimate the received light. In this case, the multiple collimating structures 310 may be connected to each other in the corresponding regions Z between two adjacent light sources 10, thus forming a continuous collimating surface on the second optical structure layer 30.

[0049] In this embodiment, as an example, as shown in, the lens structure 210 may be configured to deflect light from the light source 10 within a region covered by the collimating structure 310, such that light deflected by the lens structure 210 can substantially be received by the corresponding collimating structure 310 in order to be collimated. The collimating structure 310 can then collimate the received light, so that it travels substantially in the optical axis direction O and can thus emerge from the second optical structure layer 30 substantially in the optical axis direction O. It should be explained here that when an angle between the optical axis direction O and light collimated by the collimating structure 310 is less than 10°, it can be considered that the collimating structure 310 has collimated the received light to travel substantially in the optical axis direction O.

[0050] In this way, the lens structure 210 first deflects light, so as to distribute a portion of the light to a region where the collimating structures 310 are connected to each other (i.e. region Z). The distributed light is then collimated by the collimating structure 310, so that light can emerge in the corresponding region Z between two light sources, thus improving the uniformity of the optical distribution. In addition, the light emitted from zone Z can be substantially in the optical axis direction O, thus enabling the light intensity in the optical axis direction O to meet regulatory requirements.

[0051] Preferably, the multiple collimating structures 310, the multiple light sources 10 and the multiple lens structures 210 may be centred relative to each other. Thus, the collimating structure 310 can be a symmetrical structure in relation to the centre of the light source 10. In this case, light from the light source 10 (especially light from a central part of the light source 10) can be deflected symmetrically to both sides, and the collimating effect of the collimating structure 310 is symmetrical thereto. This is therefore more conducive to a uniform distribution and illumination effect of light.

[0052] In the second embodiment, as shown in, a surface of the second optical structure layer 30 that faces towards the light sources 10 is provided with a corrugation structure 320.shows a 3D drawing of the second optical structure layer 30 with the corrugation structure 320 according to the second embodiment of the present invention.shows a 3D drawing of the second optical structure layer 30 shown in, viewed from another angle, according to the second embodiment of the present invention.shows an optical path diagram of the second optical structure layer 30 with the corrugation structure 320 according to the second embodiment of the present invention.

[0053] As shown inand Figures 6 - 8, the corrugation structure 320 may be arranged continuously in the extension direction E of the lamp assembly 100, and the dimensions of the corrugation structure 320 may be set very small; for example, a length of each corrugation structure 320 in the extension direction E is less than or equal to 2 mm, or even less than or equal to 1 mm. The corrugation structure 320 may not be in one-to-one correspondence with the light sources in the same way that the abovementioned collimating structures 310 were; instead, it may deflect light from all of the light sources 10 as a continuous structure. Thus, in this embodiment, since there is no need to consider the problem of alignment with the light sources, the corrugation structure 320 can be made and formed more easily, and mass-produced more easily.

[0054] As an example, as shown in, the corrugation structure 320 may be formed of multiple sub-structures 320D, each being semicylindrical in shape. These sub-structures 320D may be arranged in the extension direction E of the lamp assembly 100, and extend in a direction transverse to the extension direction E.

[0055] In this embodiment, the corrugation structure 320 is configured to collimate and scatter at least a portion of received light. Due to the structural characteristics of the corrugation structure 320, the corrugation structure 320 is not capable of achieving collimation to the same extent as the collimating structures 310. That is, the corrugation structure 320 is only able to deflect light towards the optical axis direction O to a certain extent, but might be unable to cause the light to travel substantially parallel to the optical axis direction O. However, compared with the prior art, the corrugation structure 320 is able to collimate received light to a certain angle, such that after collimation, the direction of the light is nearer to the optical axis direction. Therefore, in this case, the deflecting property of the lens structure 210 in this embodiment needs to be changed accordingly. That is, compared with the embodiment with the collimating structures 310 described above, when the corrugation structure 320 is used, the lens structure 210 will need to deflect light through a larger angle, so that more light is deflected to the region of the second optical structure layer 30 that corresponds to the part between two adjacent light sources 10. At the same time, the scattering property and weaker collimating property of the corrugation structure 320 enable a sufficient quantity of light to be emitted uniformly from the corresponding region Z between two adjacent light sources 10. As a result, the uniformity of optical distribution is improved.

[0056] In this way, light is first deflected by the lens structure 210 to the region corresponding to the part between two adjacent light sources 10, and it is then ensured that light emerges from the corresponding region Z between two adjacent light sources 10 through the deflecting action (i.e. weak collimating action) and scattering action of the corrugation structure 320, thereby improving the uniformity of optical distribution.

[0057] In one embodiment, as shown in,,and, the second optical structure layer 30 is provided with a light diffusing structure 330 on a surface facing away from the light source 10. The light diffusing structure 330 may be configured to scatter light emerging from the second optical structure layer 30. As an example, the light diffusing structure 330 may be disposed on the whole of an emitting face of the second optical structure layer 30, so that when light emerges from the second optical structure layer 30, it will scatter in all directions due to the action of the light diffusing structure 330. It is thus possible to further distribute light uniformly in all directions, so as to provide visual uniformity in the amount of light, thus meeting regulatory requirements and improving the illumination effect.

[0058] As an example, as shown inand, the light diffusing structure 330 may be formed of multiple sub-structures 330D, each being in the form of a stripe, and each sub-structure 330D having an arc-shaped cross section in the extension direction E. These sub-structures 330D may be arranged in the form of an array.

[0059] In one embodiment, as shown in Figs. 1 and 2, the first optical structure layer 20 and the second optical structure layer 30 may be arranged parallel to each other. In this way, symmetry of light deflected to the two sides of the optical axis direction O can be provided, and uniformity of brightness in the regions Z at the two sides of each light source can thereby be provided, so as to ensure uniform distribution of brightness at each region of the emitting face.

[0060] In one embodiment, the first optical structure layer 20 and the second optical structure layer 30 may be formed of a transparent material. As an example, the transparent material may be a transparent silicone rubber material. Since the second optical structure layer 30 is formed of a transparent material, containing no diffusing agent or a very small amount of diffusing agent, the second optical structure layer 30 has a haze less than 30%, thus improving light output efficiency and allowing the relevant regulatory requirements to be met. However, the embodiments of the present invention are not limited to this, and other suitable transparent materials may be chosen as required. In this way, the use of transparent material to form multiple optical structures for the deflection of light allows good uniformity of optical distribution to be achieved while minimizing the impact on optical efficiency, so that economic and energy costs can be reduced while ensuring the illumination effect.

[0061] In an embodiment, the lamp assembly 100 may further comprise a support structure 40. The support structure 40 may be configured to connect and support the first optical structure layer 20 and the second optical structure layer 30.

[0062] shows a 3D drawing of a lamp assembly 100 according to an embodiment of the present invention. The support structure 40 comprises a middle support part 41 and an outer support part 42, as shown in,and. The middle support part 41 may be deployed between the first optical structure layer 20 and the second optical structure layer 30, and can thus support the entire lamp assembly 100, to provide and ensure stability of support and avoid deformation. The middle support part 41 may be made of a transparent silicone rubber material; the materials of the middle support part 41 and the second optical structure layer 30 may be the same. The outer support part 42 may be arranged to surround the light sources 10, the printed circuit board 50, the first optical structure layer 20 and the second optical structure layer 30 from the outside (e.g. from two sides and the bottom), so as to support these components and connect them to form a whole which serves as the lamp assembly 100. The outer support part 42 may be formed of an opaque material; for example, the outer support part 42 may be formed of a white, opaque material with high reflectivity, with inner surfaces on the left and right sides in the drawing of the outer support part 42 being used as reflective faces, to reflect light emitted by the light sources 10 towards a light output face, thus further improving the light output efficiency. In this way, the support structure 40 allows more than one type of optical structure to be arranged in the light output direction of the light sources, thereby changing the paths of travel of light, so as to improve uniformity.

[0063] shows a 3D drawing of a lamp assembly 100 according to another embodiment of the present invention. As shown in, when multiple rows of light sources are provided on the printed circuit board 50, a corresponding first optical structure layer 20 and a corresponding second optical structure layer 30 may be separately provided for each row of light sources, to form a secondary lamp assembly capable of providing improved uniformity of optical distribution. The multiple secondary lamp assemblies of the multiple rows of light sources can then be combined by means of the support structure 40 to form the lamp assembly 100. As an example, the first optical structure layer 20 and the second optical structure layer 30 provided for each row of light sources may be designed separately. That is, the deflecting properties of the optical structure layers may be the same or different for the multiple rows of light sources, so that identical or different optical distributions can be provided. This provides design flexibility and allows for the integration of multiple functions into the same lamp assembly 100.

[0064] The present invention also provides a method for making a lamp assembly 100. The method may comprise providing multiple light sources 10 on a printed circuit board 50 to form a lamp board. For example, the printed circuit board 50 may be cut according to a preset length, and a preset number of multiple light sources 10 may be placed on the printed circuit board 50. An injection moulding process is performed, to form a first optical structure layer 20 on the lamp board directly by injection moulding. A first extrusion process is performed to extrude a main body of a second optical structure layer 30, and different optical structures are separately formed by roller-pressing on opposite surfaces of the main body, so as to obtain the second optical structure layer 30. A second extrusion process is performed, using the lamp board, the first optical structure layer 20 and the second optical structure layer 30 to perform secondary extrusion, such that a support structure 40 is formed to achieve mutual connection and form the lamp assembly 100.

[0065] As an example, the injection moulding process may comprise placing the lamp board comprising the printed circuit board 50 and the multiple light sources 10 into a mould of the first optical structure layer 20 and performing injection moulding. For example, a mould for forming the first optical structure layer 20 may be made in advance, such that the mould may comprise a lens curved surface for forming multiple lens structures 210 in one-to-one correspondence with the multiple light sources 10. The lamp board is then placed in the mould of the first optical structure layer 20, and a transparent material (e.g. a silicone rubber material) is injected into the mould. In the injection moulding process, the injected transparent material will solidify in accordance with the formation of the mould, thereby correspondingly forming multiple lens structures 20.

[0066] In this way, since the lens structures 20 are formed directly on the light sources 10 by an injection moulding process, each light source 10 is tightly enclosed in the lens structure 20, thus increasing the stability of connection and the tightness of fit between components, while ensuring a light deflection effect.

[0067] As an example, the first extrusion process may also comprise using a first roller-pressing device to roller-press one of the opposite surfaces of the main body of the second optical structure layer 30. A surface of the first roller-pressing device is designed to have a grid-like curved surface, so as to form a light diffusing structure 330 on the roller-pressed surface. A second roller-pressing device is then used to roller-press the other surface of the main body. A surface of the second roller-pressing device is designed to have a collimating curved surface or a corrugated curved surface, so as to form collimating structures 310 or a corrugation structure 320 on the roller-pressed surface. Optionally, the roller-pressing processes of the first roller-pressing device and the second roller-pressing device may be performed simultaneously.

[0068] shows a 3D drawing of a lamp assembly 100 according to a third embodiment of the present invention.shows a schematic drawing of section A-A of the lamp assembly 100 shown in.shows a schematic drawing of section B-B of the lamp assembly 100 shown in.

[0069] As shown in Figs. 11 - 13, similar to the lamp assembly of the first embodiment, the lamp assembly 100 of the third embodiment comprises multiple light sources 10 and a second optical structure layer 30, but does not comprise a first optical structure layer 20 similar to the first embodiment. Multiple light sources 10 are provided at intervals on an upper side of a circuit board 50 in an extension direction E of the lamp assembly 100, the multiple light sources 10 being configured to emit light in a main light output direction O. The second optical structure layer 30 is arranged in the light output direction O of the multiple light sources 10, the second optical structure layer 30 being configured to receive and deflect light from the light sources, such that a portion of the light emerges from a region Z corresponding to a part between two adjacent light sources 10.

[0070] The second optical structure layer 30 is provided with a collimating structure 310 on a surface facing the multiple light sources 10, the collimating structure 310 being configured to collimate at least a portion of the received light, to increase the gathering of light in a target light output direction, e.g. a direction HV of a vehicle lamp. The second optical structure layer 30 is provided with a light diffusing structure 330 on a surface facing away from the multiple light sources 10, the light diffusing structure 330 being configured to scatter light emerging from the second optical structure layer 30, so that the emerging light has better overall uniformity. The specific structural form of the light diffusing structure 330 may be similar to that in the other embodiments described above, and is not described again here. The second optical structure layer 30 may be formed of a transparent material, which can improve the overall efficiency of emergent light compared to a diffusing material. The properties of the transparent material may be similar to those in the embodiments described above, and are not described again here. Due to the omission of the first optical structure layer 20, the lamp assembly 100 of the third embodiment is simpler and more compact in structure, and also simpler to manufacture.

[0071] In some embodiments, the form of the collimating structure 310 may be similar to that of the collimating structures described in the embodiments above. However, in some embodiments, collimating structures 310 of different structures may also be designed. For example, in this embodiment, the collimating structure 310 is a single collimating structure, and the collimating structure 310 is a curved surface protruding towards the multiple light sources, the curved surface extending from one end of the second optical structure 30 to another end thereof in the extension direction E. Compared to the collimating structures in the other embodiments above, the collimating structure 310 of this embodiment is easier to extrude, by a simpler process.

[0072] The lamp assembly 100 of the third embodiment may be a flexible lamp strip, and the entire lamp assembly 100 may be extruded integrally. The lamp assembly 100 further comprises a support structure 40, a middle support part 40 and an outer support part 42, similar to the embodiments above. These are not described again individually here.

[0073] The present invention further provides a motor vehicle, which may comprise the lamp assembly 100 according to the present invention.

[0074] Although the present invention has been explained in conjunction with the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to provide an exemplary illustration of preferred embodiments of the present invention, and must not be interpreted as a limitation of the present invention.

[0075] Although some embodiments of the overall concept of the present invention have been shown and explained, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the overall inventive concept. The scope of the present invention is defined by the claims and their equivalents.

Claims

Lamp assembly (100), characterized in that the lamp assembly (100) comprises:multiple light sources (10), arranged at intervals in an extension direction (E) of the lamp assembly;a second optical structure layer (30), the second optical structure layer (30) being arranged in a light output direction of the light sources (10), the second optical structure layer (30) being configured to receive and deflect light from the light sources, such that a portion of the light emerges from a region (Z) corresponding to a part between two adjacent light sources (10);wherein the second optical structure layer (30) is provided with a collimating structure (310) on a surface facing the light sources (10), the collimating structure (310) being configured to collimate at least a portion of the received light;the second optical structure layer (30) is provided with a light diffusing structure (330) on a surface facing away from the light sources (10), the light diffusing structure (330) being configured to scatter light emerging from the second optical structure layer (30);the second optical structure layer (30) is formed of a transparent material.Lamp assembly (100) according to Claim 1, characterized in that the lamp assembly further comprises a first optical structure layer (20), the first optical structure layer (20) being arranged in the light output direction of the light sources (10), the second optical structure layer (30) being arranged at the opposite side of the first optical structure layer (20) from the light sources (10) and separated from the first optical structure layer (20), the first optical structure layer (20) being configured to cause at least a portion of light from each light source (10) to be deflected away from the light source (10) in the extension direction (E) of the lamp assembly (100);the first optical structure layer (20) comprises multiple lens structures (210), the multiple lens structures (210) being arranged in one-to-one correspondence with the multiple light sources (10).Lamp assembly (100) according to Claim 2, characterized in that the second optical structure layer (30) is provided with multiple collimating structures (310) on the surface facing the light sources (10), the multiple collimating structures (310) being arranged to be connected to each other in the region (Z) corresponding to the part between two adjacent light sources (10), and configured to collimate at least a portion of the received light, so that it emerges substantially in an optical axis direction (O) of the light sources (10), the optical axis direction (O) being perpendicular to the extension direction (E);wherein an angle between the optical axis direction (O) and the light collimated by the collimating structures (310) is less than 10°.Lamp assembly (100) according to Claim 3, characterized in that the multiple light sources (10), the multiple lens structures (210) and the multiple collimating structures (310) are in one-to-one correspondence with each other, and centred relative to each other.Lamp assembly (100) according to Claim 2, characterized in that the second optical structure layer (30) is provided with a corrugation structure (320) on a surface facing the light sources (10), the corrugation structure (320) being arranged continuously in the extension direction (E), and configured to deflect and scatter at least a portion of the received light.Lamp assembly (100) according to any one of Claims 2 - 5, characterized in that the first optical structure layer (20) is made by an injection moulding process on the multiple light sources (10), such that each light source (10) is tightly enclosed in each lens structure (210) of the first optical structure layer (20).Lamp assembly (100) according to any one of Claims 2 - 5, characterized in that the first optical structure layer (20) and the second optical structure layer (30) are arranged parallel to each other.Lamp assembly (100) according to any one of Claims 2 - 5, characterized in that the first optical structure layer (20) is formed of a transparent material.Lamp assembly (100) according to Claim 1, characterized in thatthe second optical structure layer (30) contains no diffusing agent; orthe second optical structure layer (30) contains a small amount of a diffusing agent, and the second optical structure layer (30) has a haze less than 30%.Lamp assembly (100) according to any one of Claims 2 - 5, characterized in that the lamp assembly (100) further comprises a support structure (40), the support structure (40) being configured to connect and support the first optical structure layer (20) and the second optical structure layer (30).Lamp assembly (100) according to Claim 10, characterized in that the support structure (40) comprises a middle support part (41) and an outer support part (42);the middle support part (41) is made of a transparent material, and the outer support part (42) is made of an opaque material;the middle support part (41) is deployed between the first optical structure layer (20) and the second optical structure layer (30);inner surfaces at two sides of the outer support part (42) are used as reflective faces, to reflect light emitted by the light sources (10) towards a light output face.Lamp assembly (100) according to Claim 1, characterized in that the collimating structure (310) is a single collimating structure, which takes the form of a curved surface protruding towards the multiple light sources, the curved surface extending from one end of the second optical structure to another end thereof in the extension direction.Method for making a lamp assembly (100), characterized in that the method comprises:providing multiple light sources (10) on a printed circuit board (50), to form a lamp board;performing an injection moulding process, to form a first optical structure layer (20) on the lamp board directly by injection moulding;performing a first extrusion process, to extrude a main body of a second optical structure layer, and separately forming different optical structures on opposite surfaces of the main body by roller-pressing, to obtain the second optical structure layer;performing a second extrusion process, using the lamp board, the first optical structure layer and the second optical structure layer to perform secondary extrusion, such that a support structure is formed to achieve mutual connection and form the lamp assembly (100).Method according to Claim 13, characterized in thatthe injection moulding process further comprises: placing the lamp board into a mould of the first optical structure layer and performing injection moulding, the mould being provided with multiple lens structures in one-to-one correspondence with the multiple light sources; andthe first extrusion process further comprises:using a first roller-pressing device to roller-press one of the opposite surfaces of the main body, a surface of the first roller-pressing device being a grid-like curved surface, so as to form a light diffusing structure;using a second roller-pressing device to roller-press the other surface of the main body, a surface of the second roller-pressing device being a collimating curved surface or a corrugated curved surface, so as to form a collimating structure or a corrugation structure.Motor vehicle, characterized by comprising the lamp assembly (100) according to any one of Claims 1 - 12.

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