Method for producing lamp assembly, extrusion device, lamp assembly and motor vehicle

Abstract

The invention discloses a preparation method of a lamp assembly, extrusion equipment, the lamp assembly and a motor vehicle. The manufacturing method of the lamp assembly comprises: continuously conveying the printed circuit board (10) and the plurality of light sources (20) in a first direction (D1) through an extrusion device (200); forming a light-transmitting layer (30) on the plurality of light sources (20) and the printed circuit board (10) via a first extrusion device (210); and forming a light-emitting layer (40) on the light-transmitting layer (30) via a second extrusion device (220), wherein the light-transmitting layer (30) is configured to propagate light (L) from the plurality of light sources (20) in the light-transmitting layer (30) to a surface (S) of the light-transmitting layer (30) facing the light-emitting layer (40), and the light-emitting layer (40) is configured to receive and emit the light (L) from the light-transmitting layer (30) to the outside; wherein at least one light diffusion structure (50) is provided on the surface (S) of the light-transmissive layer (30) before the light exit layer (40) is formed.

Description

Technical Field

[0001] The invention relates to a preparation method of a lamp component, an extrusion device, a lamp component and a motor vehicle. Background Art

[0002] In the arrangement of a vehicle lamp assembly including multiple light sources, light from the light sources passes through the internal structure of the vehicle lamp assembly and is transmitted to the outside to achieve a lighting effect. In the existing vehicle lamp assembly prepared by the extrusion process, under the condition that there are restrictions on the number of light sources and the size of the assembly, in some areas, the uniformity of optical distribution and the lighting effect cannot meet the actual needs. Summary of the invention

[0003] The purpose of the present invention is to provide a lamp assembly, a method for preparing the lamp assembly, an extrusion device and a motor vehicle. The lamp assembly is prepared by an extrusion process and can form a light diffusion structure during the preparation process, thereby improving the uniformity of optical distribution and reducing costs.

[0004] On the one hand, a method for preparing a lamp assembly using an extrusion device is provided, wherein the extrusion device includes a first extrusion device and a second extrusion device sequentially arranged along a first direction, and the method includes: continuously transmitting a printed circuit board and a plurality of light sources arranged on the printed circuit board through the extrusion device along the first direction; forming a light-transmitting layer on the plurality of light sources and the printed circuit board via the first extrusion device; and forming a light-emitting layer on the light-transmitting layer via the second extrusion device; wherein the light-transmitting layer is configured to allow light from the plurality of light sources to propagate within the light-transmitting layer to a surface of the light-transmitting layer facing the light-emitting layer, and the light-emitting layer is configured to receive and emit light from the light-transmitting layer to the outside; wherein, before forming the light-emitting layer, at least one light diffusion structure is provided on the surface of the light-transmitting layer.

[0005] In one embodiment, an air layer is formed between the light extraction layer and the at least one light diffusion structure.

[0006] In one embodiment, the light-transmitting layer is formed to include a main body portion that contacts the multiple light sources and the printed circuit board and a rolled portion arranged on the main body portion; and after extruding the light-transmitting layer and before curing the light-transmitting layer, the rolled portion is pressed using an embossing device to form the at least one light diffusion structure.

[0007] In one embodiment, the rolling portion is centrally arranged on the main body portion in a second direction transverse to the first direction.

[0008] In one embodiment, after curing the light-transmitting layer and before forming the light-emitting layer, the at least one pre-fabricated light diffusion structure is assembled onto the surface of the light-transmitting layer.

[0009] In one embodiment, the light diffusion structure is formed to include a support portion in contact with the light-transmitting layer, and a diffusion portion on the support portion and centered relative to the support portion in a second direction transverse to the first direction, wherein the support portion is formed to have the same width as the light-transmitting layer in the second direction.

[0010] In one embodiment, the support portion (510) is adhered to the light-transmitting layer (30).

[0011] In one embodiment, the method further comprises forming a reflective layer supporting the printed circuit board and the light-transmitting layer via the first extrusion device, wherein the reflective layer is configured to guide light from the plurality of light sources to be emitted from the surface of the light-transmitting layer.

[0012] In one embodiment, the at least one light diffusion structure is disposed in a one-to-one correspondence between the at least one light diffusion structure and the plurality of light sources, wherein each of the light sources is centrally disposed below the corresponding light diffusion structure.

[0013] In one embodiment, the light diffusion structure includes a tooth-shaped array structure or a pillow-shaped array structure.

[0014] On the other hand, an extrusion device for preparing a lamp assembly is provided, the extrusion device comprising: a first extrusion device, the first extrusion device being configured to form a light-transmitting layer on a printed circuit board and a plurality of light sources arranged on the printed circuit board; a second extrusion device, the second extrusion device being configured to form a light-emitting layer on the light-transmitting layer; wherein the extrusion device further comprises: an embossing device, the embossing device being configured to press at least one light-diffusing structure on a surface of the light-transmitting layer facing the light-emitting layer before forming the light-emitting layer; or a light-diffusing structure supplying device, the light-diffusing structure supplying device being configured to assemble at least one pre-formed light-diffusing structure on a surface of the light-transmitting layer facing the light-emitting layer before forming the light-emitting layer.

[0015] In one embodiment, the first extrusion device comprises a first extrusion port, the first extrusion port is used to extrude a light-transmitting material to form the light-transmitting layer, and the embossing device or the light diffusion structure supplying device is located downstream of the first extrusion port.

[0016] In one embodiment, the first extrusion device further comprises a curing device near the first extrusion port, and the embossing device is located between the curing device and the first extrusion port; wherein the curing device is located between the embossing device and the second extrusion device, or the curing device is located downstream of the second extrusion device.

[0017] In one embodiment, the first extrusion device further includes a curing device downstream of the first extrusion port, and the light diffusion structure supply device is located downstream of the curing device.

[0018] In one embodiment, the first extrusion device further includes a second extrusion port, which is arranged on a side of the printed circuit board opposite to the first extrusion port, and the second extrusion port is configured to form the reflective layer on the outer sides of the printed circuit board and the light-transmitting layer.

[0019] On the other hand, a lamp assembly is provided, comprising: a printed circuit board and a plurality of light sources arranged on the printed circuit board; a light-transmitting layer, the light-transmitting layer being arranged on the printed circuit board and the plurality of light sources, the plurality of light sources being located between the light-transmitting layer and the printed circuit board; and a light-emitting layer, the light-emitting layer being arranged on the light-transmitting layer; wherein the light-transmitting layer is configured to allow light from the plurality of light sources to propagate within the light-transmitting layer to a surface of the light-transmitting layer facing the light-emitting layer, the light-emitting layer being configured to receive and emit light from the light-transmitting layer to the outside; wherein at least one light diffusion structure is provided on a surface of the light-transmitting layer facing the light-emitting layer.

[0020] In one embodiment, the light-transmitting layer is formed by an extrusion process; the at least one light diffusion structure is pressed onto the light-transmitting layer, or the at least one light diffusion structure is bonded to the light-transmitting layer; the light-emitting layer is formed by an extrusion process; the at least one light diffusion structure is arranged to form an air layer between the light-emitting layer and the light-emitting layer.

[0021] In one embodiment, the at least one light diffusion structure is centrally arranged relative to the light-transmitting layer in a second direction transverse to the first direction.

[0022] In one embodiment, the lamp assembly further comprises a reflective layer, which is arranged to surround at least a portion of the printed circuit board and the light-transmitting layer and to support the printed circuit board and the light-transmitting layer.

[0023] In one embodiment, the light emitting layer is in contact with the light transmitting layer and the reflective layer at both sides in the second direction, respectively, so that the light transmitting layer is fixed in cooperation with the reflective layer; or, the light emitting layer is in contact with the at least one light diffusion structure and the reflective layer at both sides in the second direction, respectively, so that the at least one light diffusion structure and the light transmitting layer are fixed in cooperation with the reflective layer.

[0024] In one embodiment, the lamp assembly further comprises a marking layer, which is located on a side of the printed circuit board facing away from the light-transmitting layer and penetrates through the reflecting layer in the first direction.

[0025] In one embodiment, the multiple light sources are arranged on the printed circuit board at equal intervals, and the at least one light diffusion structure includes a plurality of light diffusion structures arranged one-to-one corresponding to the multiple light sources, wherein each of the light sources is centrally disposed below the corresponding light diffusion structure.

[0026] In one embodiment, the size of each of the light diffusion structures is greater than 1 mm; and / or the light-transmitting layer (30) is made of a completely light-transmitting silicone material; and / or the light-emitting layer (40) is made of a semi-transmitting silicone material, and the light-emitting layer is used to diffuse light.

[0027] In yet another aspect, a motor vehicle is provided, the motor vehicle comprising a lamp assembly according to an embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram showing a preparation sequence of a lamp assembly according to an embodiment of the present invention.

[0029] Figure 2 A longitudinal sectional view of a lamp assembly according to an embodiment of the present invention is shown.

[0030] Figure 3 A schematic diagram showing an extrusion apparatus according to an embodiment of the present invention is shown.

[0031] Figure 4 The embodiment according to the present invention is shown Figure 3 A transverse cross-sectional view of a lamp component produced by the extrusion apparatus shown.

[0032] Figure 5 A schematic diagram of an extrusion device according to another embodiment of the present invention is shown.

[0033] Figure 6 The embodiment according to the present invention is shown. Figure 5 A transverse cross-sectional view of a lamp component produced by the extrusion apparatus shown. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further specifically described below by examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals represent the same or similar components. The following description of the 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 construed as a limitation of the present invention.

[0035] In addition, in the following detailed description, for the purpose of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments can also be implemented without these specific details.

[0036] Figure 1 A schematic diagram showing a preparation sequence of a lamp assembly 100 according to an embodiment of the present invention. Figure 2 A longitudinal cross-sectional view of a lamp assembly 100 according to an embodiment of the present invention is shown. Figure 3 A schematic diagram of an extrusion apparatus 200 according to an embodiment of the present invention is shown. Figure 4 The embodiment according to the present invention is shown. Figure 3 A transverse cross-sectional view of a lamp assembly 100 produced by an extrusion apparatus 200 is shown.

[0037] According to an embodiment of the present invention, the lamp assembly 100 may be manufactured using the extrusion device 200. Figure 1-3 As shown, the extrusion device 200 may include a first extrusion device 210 and a second extrusion device 220 sequentially arranged along a first direction D1. The printed circuit board 10 and the plurality of light sources 20 arranged on the printed circuit board 10 may be continuously conveyed through the extrusion device 200 along the first direction D1 to form corresponding material layers on the printed circuit board 10 and the plurality of light sources 20 through the extrusion device 200 to prepare the lamp assembly 100.

[0038] As an example, the printed circuit board 10 may be a flexible printed circuit board. The light source 20 may be a light emitting diode (LED). However, the embodiments of the present invention are not limited thereto, and according to actual needs, the light source 20 may be any light source capable of emitting light.

[0039] like Figure 1 and Figure 3 As shown, the printed circuit board 10 and the plurality of light sources 20 may first be conveyed through the first extrusion device 210 along the first direction D1 to form a light-transmitting layer 30 on the printed circuit board 10 and the plurality of light sources 20 via the first extrusion device 210. As an example, the light-transmitting layer 30 may be formed of a completely light-transmitting material, such as a completely light-transmitting silicone material. However, embodiments of the present invention are not limited thereto.

[0040] Specifically, the first extrusion device 210 may be provided with a first extrusion port 2101 on the side of the printed circuit board 10 where the light source 20 is arranged. The light-transmitting material for forming the light-transmitting layer 30 may enter from a feed port corresponding to the first extrusion port 2101, and be pushed and conveyed to the first extrusion port 2101, so as to be extruded from the first extrusion port 2101 and laid on the printed circuit board 10 and the plurality of light sources 20. Thus, the light-transmitting layer 30 is formed on the printed circuit board 10 and the plurality of light sources 20, and the plurality of light sources 20 may be located between the light-transmitting layer 30 and the printed circuit board 10. Figure 4 As shown, the light-transmitting layer 30 may be formed to completely contact the printed circuit board 10 and the light source 20 .

[0041] like Figure 1 and Figure 3 As shown, the first extrusion device 210 may also be provided with a second extrusion port 2102. The second extrusion port 2102 may be arranged at a side of the printed circuit board 10 opposite to the first extrusion port 2101, so as to form a reflective layer 60 outside the printed circuit board 10 and the light-transmitting layer 30. As an example, the reflective layer 60 may be formed of a completely light-proof material, such as a completely light-proof silicone material. However, the embodiments of the present invention are not limited thereto. According to an embodiment of the present invention, the reflective material for forming the reflective layer 60 may enter from a feed port corresponding to the second extrusion port 2102, and be pushed and conveyed to the second extrusion port 2102, so as to be extruded from the second extrusion port 2102 to form the reflective layer 60.

[0042] like Figure 4 As shown, the reflective layer 60 may be formed to surround at least a portion of the printed circuit board 10 and the light-transmitting layer 30 from the outside. That is, the reflective layer 60 may be formed at a side of the printed circuit board 10 opposite to the light-transmitting layer 30, and cover at least a portion of the printed circuit board 10. The reflective layer 60 may extend upward at both sides of the printed circuit board 10 in a second direction D2 transverse to the first direction D1, respectively, to cover at least a portion of both sides of the light-transmitting layer 30 in the second direction D2, so as to surround the light-transmitting layer 30 from the side of the light-transmitting layer 30. In this way, the reflective layer 60 may achieve a supporting function for the printed circuit board 10 and the light-transmitting layer 30. The reflective layer 60 may be in full contact with the printed circuit board 10 and the light-transmitting layer 30.

[0043] According to an embodiment of the present invention, the light-transmitting layer 30 and the reflective layer 60 can be extruded simultaneously in the first extrusion device 210, or the light-transmitting layer 30 and the reflective layer 60 can be extruded in sequence instead of at the same time. This can be adjusted according to actual needs. According to the characteristics of the extrusion process, the extrusion port is usually designed to have a specific shape so that the extrusion material can be extruded in the specific shape, and then the extrusion material is cured into the specific shape. Therefore, according to an embodiment of the present invention, the shapes of the first extrusion port 2101 and the second extrusion port 2102 can be designed respectively according to the required positional relationship between the printed circuit board 10, the light source 20, the light-transmitting layer 30 and the reflective layer 60. In the case where the first extrusion port 2101 and the second extrusion port 2102 are combined together, the light-transmitting layer 30 and the reflective layer 60 can be formed at the same time. In the case where the first extrusion port 2101 and the second extrusion port 2102 are staggered, the light-transmitting layer 30 and the reflective layer 60 will be extruded respectively at different times, and the extrusion order can be adjusted according to actual needs, for example, the light-transmitting layer 30 is extruded first, and then the reflective layer 60 is extruded.

[0044] In addition, according to the characteristics of the extrusion process, a curing device is usually provided near the extrusion port to quickly cure and shape the extruded layer, so as to maintain the formed shape. According to an embodiment of the present invention, a curing device may be provided near the first extrusion port 2101 and the second extrusion port 2102 to cure and shape the extruded light-transmitting layer 30 and the reflective layer 60.

[0045] Then, the light emitting layer 40 may be further transmitted through the second extrusion device 220 to form the light emitting layer 40 on the light transmissive layer 30 via the second extrusion device 220. That is, the light emitting layer 40 is formed on the side of the light transmissive layer 30 opposite to the printed circuit board 10. As an example, the light emitting layer 40 may be formed of a semi-transmissive material, such as a semi-transmissive silicone material, so that light may be diffusely reflected in the light emitting layer 40 to enhance the light scattering lighting effect. However, the embodiments of the present invention are not limited thereto.

[0046] Specifically, the second extrusion device 220 may be provided with a third extrusion port 2103. The third extrusion port 2103 may be provided at the same side as the first extrusion port 2101 relative to the printed circuit board 10, so as to form the light emitting layer 40 on the light-transmitting layer 30. According to an embodiment of the present invention, the material for forming the light emitting layer 40 may enter from a feed port corresponding to the third extrusion port 2103, and be pushed and transferred to the third extrusion port 2103, so as to be extruded from the third extrusion port 2103 to form the light emitting layer 40.

[0047] In some embodiments, the curing device 2100 may be located between the embossing device 300 and the second extrusion device 220. In this case, another curing device (not shown) may be provided downstream of the second extrusion device 220 to cure the light output layer 40. In other embodiments, the curing device 2100 may be directly provided downstream of the second extrusion device 220, and a unified curing step may be performed after all the extrusion steps are completed.

[0048] like Figure 4 As shown, the light emitting layer 40 is formed to cover the light-transmitting layer 30, and is in contact with the light-transmitting layer 30 and the reflective layer 60 at both sides in the second direction D2 transverse to the first direction D1. Therefore, the positional relationship of the light-transmitting layer 30, the light emitting layer 40 and the reflective layer 60 is arranged such that the light emitting layer 40 and the reflective layer 60 are in contact with each other at the two sides of the light-transmitting layer 30, so that the reflective layer 60 supports the light emitting layer 40 while supporting the printed circuit board 10 and the light-transmitting layer 30. Moreover, at the contact position between the light emitting layer 40 and the reflective layer 60, the light emitting layer 40 is also in contact with the light-transmitting layer 30, so that the light emitting layer 40 can apply a fixing force to the light-transmitting layer 30 with the support of the reflective layer 60. In this way, the light emitting layer 40 can cooperate with the reflective layer 60 to fix the light-transmitting layer 30 on the printed circuit board 10 and the light source 20, so as to achieve close contact between the three, thereby improving the product quality and service life of the lamp assembly 100. As described above, the light extraction layer 40 can be extruded in a desired shape by designing the third extrusion port 2103 to have a specific shape.

[0049] The first extrusion device 210 may also be provided with a fourth extrusion port. The fourth extrusion port may be located on the same side as the second extrusion port 2102 relative to the printed circuit board 10 for extruding the marking layer 70. As described above, the positional relationship and shape of the second extrusion port 2102 and the fourth extrusion port may be designed according to the desired positional relationship between the marking layer 70 and the reflective layer 60. As an example, Figure 3 As shown, the marking layer 70 can be formed at a side of the printed circuit board 10 facing away from the light-transmitting layer 30, and can penetrate through the reflective layer 60 in the first direction D1. This allows the marking layer 70 to be in direct contact with the printed circuit board 10. According to an embodiment of the present invention, the marking layer 70 can be formed of the same material as the light-transmitting layer 30. That is, the marking layer 70 can also be formed of a completely light-transmitting material, such as a completely light-transmitting silicone material. However, the embodiments of the present invention are not limited thereto. In this way, the cutting marks on the printed circuit board 10 can be seen through the light-transmitting effect of the marking layer 70, so as to facilitate a convenient and accurate cutting process in the cutting stage after the curing stage, thereby accelerating the production schedule and saving costs.

[0050] According to an embodiment of the present invention, before forming the light extraction layer 40, at least one light diffusion structure 50 may be provided on the surface S of the light transmission layer 30 facing the light extraction layer 40. As an example, Figure 2 A plurality of light diffusion structures 50 are shown. However, the embodiments of the present invention are not limited thereto, for example, only one continuous, integral light diffusion structure 50 may be provided on the surface S of the light-transmitting layer 30, or the number of light diffusion structures 50 may be adjusted according to actual needs. In this article, "light diffusion structure" may refer to a structure that scatters the light passing therethrough, thereby expanding the irradiation range of the light.

[0051] like Figure 2 and Figure 4 As shown, according to the lamp assembly 100 of the embodiment of the present invention, when the plurality of light sources 20 are powered on to emit light, the light L from the light source 20 will propagate in the light-transmitting layer 30 to the surface S of the light-transmitting layer 30, and will be emitted from the surface S. As described above, the reflective layer 60 is arranged to surround the light-transmitting layer 30 from the outside and is formed of a completely opaque material, so the reflective layer 60 can guide the light L toward the surface S of the light-transmitting layer 30 to be emitted from the surface S. According to the embodiment of the present invention, since the light diffusion structure 50 is provided on the surface S of the light-transmitting layer 30, at least a portion of the light L from the light source 20 will be emitted through the light diffusion structure 50. Then, the light-transmitting layer 40 can receive the light L from the light-transmitting layer 30 and emit it to the outside to achieve a lighting effect.

[0052] In this way, on the one hand, the light diffusion structure 50 can be used to expand the irradiation range of the light L emitted from the light source 20, so that the irradiation ranges of the light L emitted by adjacent light sources in the multiple light sources 20 can overlap with each other, thereby ensuring that the lamp assembly 100 is fully illuminated without the occurrence of unilluminated dark areas, so that it has the desired optical distribution uniformity. On the other hand, by arranging the light diffusion structure 50, the distance between each light source 20 in the multiple light sources 20 can also be widened, without the need to arrange the light sources 20 closely to each other in order to avoid illuminating the dark areas. This makes it possible to save costs. On the other hand, the height of the lamp assembly 100 in the direction perpendicular to the first direction D1 and the second direction D2 can also be reduced, without the need to deliberately raise the height of the lamp assembly 100 in order to increase the light range to increase the light irradiation range. This makes it possible to reduce the weight of the lamp assembly 100, save costs, and more flexibly adapt to surrounding structures such as those in the vehicle body.

[0053] According to an embodiment of the present invention, during the process of forming the light extraction layer 40, an air layer 80 is formed between the light extraction layer 40 and the light diffusion structure 50 on the light transmission layer 30. Figure 2 and Figure 4As shown, the light emitting layer 40 is arranged not to be in direct contact with the light transmitting layer 30 and the light diffusion structure 50 on the light transmitting layer 30 , but to be spaced a certain distance from each other, thereby forming an air layer 80 .

[0054] In this way, by providing the air layer 80, the scattering effect of the light diffusion structure 50 can be ensured to present the effect of expanding the illumination range of the light. Due to the difference in refractive index between the air medium in the air layer 80 and the material forming the light-transmitting layer 30 and the light-diffusing structure 50, when the light L is emitted from the light-transmitting layer 30 and the light-diffusing structure 50 to the air layer 80, refraction occurs, so the travel path of the light L is deflected and the illumination range is expanded. Furthermore, due to the scattering characteristics of the light-diffusing structure 50 itself, the light L emitted from the light-diffusing structure 50 can be deflected at various angles, which further expands the illumination range, so that the illumination ranges of adjacent light sources 20 can overlap with each other.

[0055] As an example, the air layer 80 can be formed while the light exit layer 40 is formed by correspondingly designing the shape of the third extrusion port 2103 for forming the light exit layer 40. For example, a hollow design can be performed at the portion corresponding to the light exit layer 40, and a solid design can be performed at the portion corresponding to the air layer 80. Thus, when the material of the light exit layer 40 is extruded from the third extrusion port 2103, it can pass through the hollow portion but cannot pass through the solid portion, so that a light exit layer 40 of a corresponding shape is formed through the hollow portion, and the solid portion is left as the air layer 80. In addition, the height of the air layer 80 in the direction perpendicular to the first direction D1 and the second direction D2 (i.e., the spacing distance between the light exit layer 40 and the light diffusion structure 50) can be appropriately designed according to the actual lighting effect and / or the size requirements of the actual lamp assembly.

[0056] In one embodiment, the light-transmitting layer 30 may be formed to include a main body portion 310 in contact with the plurality of light sources 20 and the printed circuit board 10, and a rolling portion 320 disposed on the main body portion 310. After the light-transmitting layer 30 is extruded and before the light-transmitting layer 30 is cured, the rolling portion 320 is pressed or embossed using an embossing device 300 to form at least one light diffusion structure 50. In this embodiment, the rolling layer 320 protrudes from the main body portion 310, so that the light diffusion structure 50 can be easily formed.

[0057] like Figure 3 As shown, the extrusion device 200 may include an embossing device 300. As an example, Figure 3As shown, the embossing device 300 may be a circular rotating device, and an embossed pattern is provided on the outer peripheral surface of the embossing device 300. For example, when the light-transmitting layer 30 is extruded from the first extrusion port 2101 and the light-transmitting layer 30 is continuously conveyed along the first direction D1, the embossing device 300 may be continuously rotated, and the outer peripheral surface of the embossing device 300 may contact a portion of the light-transmitting layer 30, for example, the outer peripheral surface of the embossing device 300 may contact the rolling part 320 of the light-transmitting layer 30, and the portion of the light-transmitting layer 30 may be pressed according to the embossed pattern on the embossing device 300, so as to shape the light-transmitting layer 30 according to the shape of the embossed pattern, thereby forming a light diffusion structure 50 having the same shape as the embossed pattern on the surface S of the light-transmitting layer 30.

[0058] However, the embodiments of the present invention are not limited thereto. Other forms of embossing devices 300 are also conceivable, as long as they can emboss a specific shape on the light-transmitting layer 30 extruded from the first extrusion port 2101. In addition, the frequency of the pattern printing of the light-transmitting layer 30 by the embossing device 300 and the length of the pattern printing can also be designed differently according to the actual structural requirements of the light diffusion structure 50.

[0059] As an example, Figure 3 As shown, the embossing device 300 may be included in the first extrusion device 210 and located downstream of the first extrusion port 2101. In addition, the first extrusion device 210 further includes a curing device 2100 near the first extrusion port 2101, and the embossing device 300 is located between the first extrusion port 2101 and the curing device 2100. Therefore, according to an embodiment of the present invention, the light diffusion structure 50 may be formed on the surface S of the light-transmitting layer 30 by using the embossing device 300 before the light-transmitting layer 30 is extruded from the first extrusion port 2101 but before the light-transmitting layer 30 is cured.

[0060] Generally, according to the characteristics of the extrusion process, the extruded material extruded from the extrusion port is in a soft state, and then is shaped into a solid state by a curing device to extrude a finished product from the extrusion device. Therefore, the pressing process of the light-transmitting layer 30 needs to be carried out when the light-transmitting layer 30 is in a soft state, so as to easily realize the shaping of the surface S of the light-transmitting layer 30. In this case, the embossing device 300 is arranged between the first extrusion port 2101 and the curing device 2100. Thus, after the light-transmitting layer 30 in a soft state is extruded from the first extrusion port 2101, the light-transmitting layer 30 in a soft state is pressed by the embossing device 300 to form a light diffusion structure 50, and then cured and shaped by the curing device 2100, so that the light-transmitting layer 30 with at least one light diffusion structure 50 on the surface S is extruded from the first extrusion device 210.

[0061] Although in Figure 3In the embodiment, the curing device 2100 is shown as being located between the embossing device 300 and the second extrusion device 220, but this is only an example. In other embodiments, as described above, the curing device 2100 can also be arranged to be located downstream of the second extrusion device 220, so that the curing step is performed uniformly after all the extrusion steps are completed.

[0062] As an example, Figure 4 As shown, the light-transmitting layer 30 may be formed to include a main body portion 310 and a rolling portion 320. The main body portion 310 is arranged to contact the printed circuit board 10, the light source 20, and the reflective layer 60. The rolling portion 320 is arranged on a side of the main body portion 310 that is away from the light source 20. During the pressing process of the embossing device 300, the embossing device 300 may be configured to press the rolling portion 320 of the light-transmitting layer 30 to form a light diffusion structure 50 in the rolling portion 320. In this way, it is convenient to carry out different structural designs for the light diffusion structure 50, so as to be easily applicable to different application needs.

[0063] In one embodiment, the rolling portion 320 may be centrally arranged on the main body 310 in the second direction D2. Figure 4 As shown, the rolling portion 320 can be located in the middle position relative to the main body 310, so that the rolling portion 320 does not contact the light emitting layer 40 in the second direction D2. In this way, after the light diffusion structure 50 is formed by the rolling portion 320, the light emitted from the light diffusion structure 50 can also be deflected in the second direction D2 and achieve a scattering effect, thereby ensuring the lighting effect of the part of the light emitting layer 40 in the second direction D2. In addition, by arranging the rolling portion 320 in the center, the light emitting layer 40 can be in contact with the main body 310 of the light-transmitting layer 30 at the position where it contacts the reflective layer 60. As described above, this allows the light emitting layer 40 to cooperate with the reflective layer 60 to fix the light-transmitting layer 30, thereby improving the structural stability of the lamp assembly 100.

[0064] Figure 5 A schematic diagram of an extrusion device 200 according to another embodiment of the present invention is shown. Figure 6 The embodiment according to the present invention is shown. Figure 5 A transverse cross-sectional view of a lamp assembly 100 produced by an extrusion apparatus 200 is shown.

[0065] In one embodiment, after curing the light-transmitting layer 30 and before forming the light-emitting layer 40, at least one pre-fabricated light diffusion structure 50 may be assembled onto the surface S of the light-transmitting layer 30. In this embodiment, Figure 5 As shown, the extrusion device 200 may include a light diffusion structure supply device 400, and utilizes the light diffusion structure supply device 400 instead of Figure 3The embossing device 300 shown in FIG. 1 is configured to provide at least one light diffusion structure 50 on the surface S of the light-transmitting layer 30 .

[0066] According to an embodiment of the present invention, Figure 5 The extrusion equipment 200 and Figure 3 The difference between the extrusion devices 200 in FIG. 1 and FIG. 2 is only the portion of the first extrusion device 210 for extruding the light-transmitting layer 30 and the light diffusion structure supply device 400. Figure 5 The extrusion device 200 is not shown. Figure 3 The same parts are shown only with Figure 3 However, it should be noted that Figure 5 The extrusion device 200 in the illustrated embodiment may include Figure 3 The same parts used to form the reflective layer 60 and the marking layer 70 (including the second extrusion outlet 2102 and the fourth extrusion outlet), and the part used to form the light output layer 40 (including the third extrusion outlet 2103) shown in FIG.

[0067] As an example, Figure 5 As shown, the light diffusion structure supply device 400 may include a plurality of pre-prepared light diffusion structures 50, and may supply the light diffusion structures 50 to the surface S of the light-transmitting layer 30 at a certain frequency to assemble the light diffusion structures 50 on the surface S. Figure 3 Unlike the embossing device 300 in the embodiment, the light diffusion structure 50 supplied by the light diffusion structure supply device 400 is a pre-prepared component with a complete and fixed structure. Therefore, the assembly between the light diffusion structure 50 and the light-transmitting layer 30 should belong to the physical bonding between the two components. In this case, the light diffusion structure 50 needs to be bonded with the light-transmitting layer 30 after curing to complete the assembly process. Therefore, the light diffusion structure supply device 400 is arranged downstream of the curing device 2100 of the first extrusion device 210. After the light-transmitting layer 30 is extruded from the first extrusion port 2101, the light-transmitting layer 30 is first cured and shaped by the curing device 2100, and then at least one light diffusion structure 50 is arranged on the surface S by the light diffusion structure supply device 400, thereby forming a light-transmitting layer 30 having a light diffusion structure 50. Preferably, the light diffusion structure supply device 400 can be arranged between the first extrusion device 210 and the second extrusion device 220. However, the embodiments of the present invention are not limited to this.

[0068] By adopting the light diffusion structure supply device 400, the light diffusion structure 50 can be more flexibly arranged on the light-transmitting layer 30. For example, the light diffusion structure supply device 400 can include a plurality of forms of light diffusion structures 50, and the supply frequency can be set more freely. This allows the extrusion device 200 to be applied to the processing of various types of lamp components, and the structure or size of the light diffusion structure 50 can be easily changed at any time according to the design and application requirements.

[0069] In one embodiment, the light diffusion structure 50 may be formed to include a support portion 510 in contact with the light-transmitting layer 30, and a diffusion portion 520 disposed on the support portion 510 and centered relative to the support portion 510 in the second direction D2, wherein the support portion 510 is formed to have the same width as the light-transmitting layer 30 in the second direction D2. In other embodiments, the width of the support portion 510 may also be smaller than the width of the light-transmitting layer 30, and the light-emitting layer 40 directly abuts against the light-transmitting layer 30.

[0070] like Figure 5 and Figure 6 As shown, the pre-prepared light diffusion structure 50 supplied by the light diffusion structure supply device 400 may include a support portion 510 and a diffusion portion 520. The support portion 510 is configured to contact the light-transmitting layer 30 and the reflective layer 60. The diffusion portion 520 is arranged on the side of the support portion 510 that is opposite to the light source 20 for emitting light outward. The support portion 510 is arranged to extend the same width as the light-transmitting layer 30 in the second direction D2, so that the support portion 510 can completely cover the light-transmitting layer 30 in the second direction D2, thereby contacting the reflective layer 60 at both sides. In this way, the support portion 510 can have the largest contact area with the light-transmitting layer 30, thereby ensuring the stability of the physical connection between the two and improving the product quality of the lamp assembly.

[0071] In addition, the diffusion part 520 is configured to emit light outward and has a scattering effect. Therefore, the diffusion part 520 can be prepared in advance in a specific shape to form a light diffusion structure. Figure 6 The diffusion portion 520 in may correspond to Figure 4The rolled portion 320 after being pressed and cured. In this case, similar to the rolled portion 320, the diffuser 520 can also be arranged to be centered relative to the support portion 510, and therefore also centered relative to the light-transmitting layer 30. As described above, in this way, while ensuring the lighting effect of the light emitting layer 40 on both sides of the second direction D2, the light emitting layer 40 is allowed to contact the support portion 510 at the position in contact with the reflective layer 60, so that the reflective layer 60 can cooperate with the support portion 510 to press and fix the light diffusion structure 50, thereby further ensuring the structural stability of the lamp assembly 100, and then ensuring the lighting effect and uniformity of optical distribution. In this embodiment, the diffuser 520 protrudes from the support portion 510.

[0072] In one embodiment, the support portion 510 of the light diffusion structure 50 may be bonded or adhered to the light-transmitting layer 30. For example, an adhesive may be provided at the bottom of the support portion 510, and then the support portion 510 may be assembled to the light-transmitting layer 30 through the adhesion of the adhesive, thereby completing the arrangement of the light diffusion structure 50 on the light-transmitting layer 30. However, the embodiments of the present invention are not limited thereto, and other bonding methods may be considered as long as the support portion 510 can be stably maintained on the light-transmitting layer 30.

[0073] In one embodiment, the plurality of light sources 20 may be arranged at equal intervals on the printed circuit board 10. The at least one light diffusion structure 50 may include a plurality of light diffusion structures 50 arranged corresponding to the plurality of light sources 20. Figure 2 As shown, by arranging a plurality of light sources 20 on the printed circuit board 10 at equal intervals, the irradiation range of each light source 20 can be made equal to each other, which is conducive to the uniformity of the lighting effect of the lamp assembly 100. Further, by arranging a plurality of light diffusion structures 50 to correspond to the plurality of light sources 20, the optical distribution uniformity of the lamp assembly 100 can be further improved and enhanced. In this case, the light emitted by each light source 20 will be emitted outward through the corresponding light diffusion structure 50, which expands the irradiation range of each light source 20. As a result, the irradiation ranges of adjacent light sources 20 will overlap with each other, so that the entire lamp assembly 100 can be illuminated without the presence of dark areas on the light emitting layer 40 where no light passes. Therefore, the lamp assembly 100 according to the embodiment of the present invention has excellent optical distribution uniformity, good lighting effect, and a simple preparation process, high flexibility, and easy operation and execution.

[0074] Preferably, each light diffusion structure 50 may be arranged so that the light source 20 is centrally arranged relative to the corresponding light diffusion structure 50. In this way, the illumination range of the light source 20 may be maximized to ensure uniformity of the lighting effect.

[0075] Preferably, the size of each light diffusion structure 50 may be greater than 1 mm.

[0076] In one embodiment, the light diffusion structure 50 may include a tooth-shaped array structure or a pillow-shaped array structure. However, the embodiments of the present invention are not limited thereto, and may include light diffusion structures arranged in other suitable shapes according to actual needs.

[0077] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to exemplify the preferred implementations of the present invention and should not be construed as limiting the present invention.

[0078] Although some embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the present general inventive concept, the scope of which is defined by the claims and their equivalents.

Claims

1. A method for preparing a lamp assembly (100) using an extrusion device (200), wherein the extrusion device (200) comprises a first extrusion device (210) and a second extrusion device (220) sequentially arranged along a first direction (D1), characterized in that: The method comprises: Continuously conveying a printed circuit board (10) and a plurality of light sources (20) arranged on the printed circuit board (10) through the extrusion device (200) along the first direction (D1); forming a light-transmitting layer (30) on the plurality of light sources (20) and the printed circuit board (10) via the first extrusion device (210); and forming a light emitting layer (40) on the light-transmitting layer (30) via the second extrusion device (220); The light-transmitting layer (30) is configured to allow light (L) from the plurality of light sources (20) to propagate within the light-transmitting layer (30) to a surface (S) of the light-transmitting layer (30) facing the light-emitting layer (40), and the light-emitting layer (40) is configured to receive and emit light (L) from the light-transmitting layer (30) to the outside; Wherein, before forming the light emitting layer (40), at least one light diffusion structure (50) is arranged on the surface (S) of the light transmitting layer (30).

2. The method according to claim 1, characterized in that The method further comprises: An air layer (80) is formed between the light emitting layer (40) and the at least one light diffusion structure (50).

3. The method according to claim 2, characterized in that The method further comprises: The light-transmitting layer (30) is formed to include a main body portion (310) in contact with the plurality of light sources (20) and the printed circuit board (10) and a rolling portion (320) arranged on the main body portion (310); and After the light-transmitting layer (30) is extruded and before the light-transmitting layer (30) is solidified, the rolling part (320) is pressed using an embossing device (300) to form the at least one light diffusion structure (50).

4. The method according to claim 3, characterized in that The method further comprises: The rolling portion (320) is centrally arranged on the main body portion (310) in a second direction (D2) transverse to the first direction (D1).

5. The method according to claim 2, characterized in that: The method further comprises: After curing the light-transmitting layer (30) and before forming the light-emitting layer (40), the at least one pre-prepared light diffusion structure (50) is assembled onto the surface (S) of the light-transmitting layer (30).

6. The method according to claim 5, characterized in that The method further comprises: The light diffusion structure (50) is formed to include a support portion (510) in contact with the light-transmitting layer (30), and a diffusion portion (520) arranged on the support portion (510) and centered relative to the support portion (510) in a second direction (D2) transverse to the first direction (D1), The support portion (510) is formed to have the same width as the light-transmitting layer (30) in the second direction (D2).

7. The method according to claim 6, characterized in that The assembling comprises: adhering the support portion (510) to the light-transmitting layer (30).

8. The method according to any one of claims 1 to 7, characterized in that The method also includes forming a reflective layer (60) supporting the printed circuit board (10) and the light-transmitting layer (30) via the first extrusion device (210), wherein the reflective layer (60) is configured to guide light (L) from the plurality of light sources (20) to be emitted from the surface (S) of the light-transmitting layer (30).

9. The method according to any one of claims 1 to 7, characterized in that: The method comprises: The at least one light diffusion structure (50) is arranged in a one-to-one correspondence between the at least one light diffusion structure (50) and the plurality of light sources (20), wherein each of the light sources (20) is centrally arranged below the corresponding light diffusion structure (50).

10. The method according to any one of claims 1 to 7, characterized in that The light diffusion structure (50) comprises a tooth-shaped array structure or a pillow-shaped array structure.

11. An extrusion device (200) for preparing a lamp assembly (100), characterized in that: The extrusion device (200) comprises: A first extrusion device (210) configured to form a light-transmitting layer (30) on a printed circuit board (10) and a plurality of light sources (20) arranged on the printed circuit board (10); A second extrusion device (220), the second extrusion device (220) being configured to form a light emitting layer (40) on the light-transmitting layer (30); Wherein, the extrusion equipment (200) further comprises two An embossing device (300), the embossing device (300) being configured to emboss at least one light diffusion structure (50) on a surface (S) of the light-transmitting layer (30) facing the light-emitting layer (40) before forming the light-emitting layer (40); or A light diffusion structure supply device (400) is configured to assemble at least one pre-formed light diffusion structure (50) on a surface (S) of the light-transmitting layer (30) facing the light emitting layer (40) before forming the light emitting layer (40).

12. The extrusion device (200) according to claim 11, characterized in that The first extrusion device (210) comprises a first extrusion port (2101), which is used to extrude a light-transmitting material to form the light-transmitting layer (30), and the embossing device (300) or the light diffusion structure supplying device (400) is located downstream of the first extrusion port (2101).

13. The extrusion device (200) according to claim 12, characterized in that The first extrusion device (210) further comprises a curing device (2100) near the first extrusion port (2101), and the embossing device (300) is located between the curing device (2100) and the first extrusion port (2101); Wherein, the curing device (2100) is located between the embossing device (300) and the second extrusion device (220), or, the curing device (2100) is located downstream of the second extrusion device (220).

14. The extrusion device (200) according to claim 12, characterized in that: The first extrusion device (210) further comprises a curing device (2100) downstream of the first extrusion port (2101), and the light diffusion structure supply device (400) is located downstream of the curing device (2100).

15. The extrusion device (200) according to claim 12, characterized in that The first extrusion device (210) further comprises a second extrusion port (2102), wherein the second extrusion port (2102) is arranged on a side of the printed circuit board (10) opposite to the first extrusion port (2101), and the second extrusion port (2102) is configured to form the reflective layer (60) on the outer sides of the printed circuit board (10) and the light-transmitting layer (30).

16. A lamp assembly (100), characterized in that: The lamp assembly (100) comprises: A printed circuit board (10) and a plurality of light sources (20) arranged on the printed circuit board (10); a light-transmitting layer (30), the light-transmitting layer (30) being arranged on the printed circuit board (10) and the plurality of light sources (20), the plurality of light sources (20) being located between the light-transmitting layer (30) and the printed circuit board (10); and a light emitting layer (40), the light emitting layer (40) being arranged on the light transmitting layer (30); The light-transmitting layer (30) is configured to allow light (L) from the plurality of light sources (20) to propagate within the light-transmitting layer (30) to a surface (S) of the light-transmitting layer (30) facing the light-emitting layer (40), and the light-emitting layer (40) is configured to receive and emit light (L) from the light-transmitting layer (30) to the outside; Wherein, at least one light diffusion structure (50) is arranged on a surface (S) of the light-transmitting layer (30) facing the light-emitting layer (40).

17. The lamp assembly (100) according to claim 16, characterized in that The light-transmitting layer (30) is formed by an extrusion process; The at least one light diffusion structure (50) is pressed onto the light-transmitting layer (30), or the at least one light diffusion structure (50) is bonded onto the light-transmitting layer (30); The light emitting layer (40) is formed by an extrusion process; The at least one light diffusion structure (50) is arranged to form an air layer (80) between the at least one light diffusion structure and the light output layer (40).

18. The lamp assembly (100) according to claim 16, characterized in that The at least one light diffusion structure (50) is centrally arranged relative to the light-transmitting layer (30) in a second direction (D2) transverse to the first direction (D1).

19. The lamp assembly (100) according to claim 18, characterized in that The lamp assembly (100) further comprises a reflective layer (60) arranged to surround at least a portion of the printed circuit board (10) and the light-transmitting layer (30), and to support the printed circuit board (10) and the light-transmitting layer (30).

20. The lamp assembly (100) according to claim 19, characterized in that The light emitting layer (40) is in contact with the light-transmitting layer (30) and the reflective layer (60) at both sides in the second direction (D2), respectively, so as to cooperate with the reflective layer (60) to fix the light-transmitting layer (30); or, The light emitting layer (40) is in contact with the at least one light diffusion structure (50) and the reflective layer (60) at both sides in the second direction (D2), respectively, so as to cooperate with the reflective layer (60) to fix the at least one light diffusion structure (50) and the light-transmitting layer (30).

21. The lamp assembly (100) according to any one of claims 19-20, characterized in that: The lamp assembly (100) further comprises a marking layer (70), the marking layer (70) being located on a side of the printed circuit board (10) facing away from the light-transmitting layer (30) and penetrating through the reflecting layer (60) in the first direction (D1).

22. The lamp assembly (100) according to any one of claims 16 to 20, characterized in that: The plurality of light sources (20) are arranged on the printed circuit board (10) at equal intervals, and the at least one light diffusion structure (50) comprises a plurality of light diffusion structures (50) arranged in one-to-one correspondence with the plurality of light sources (20), wherein each of the light sources (20) is centrally arranged below the corresponding light diffusion structure (50).

23. The lamp assembly (100) according to any one of claims 16 to 20, characterized in that: The size of each of the light diffusion structures (50) is greater than 1 mm; and / or The light-transmitting layer (30) is made of a completely light-transmitting silicone material; and / or The light emitting layer (40) is made of a semi-transparent silicone material and is used for diffusing light.

24. A motor vehicle, characterized in that: Comprising a lamp assembly (100) according to any one of claims 16 to 23.

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