A lighting fixture assembly, a vehicle headlamp, and a vehicle

Abstract

The present invention relates to an automotive headlamp, and discloses a lamp assembly which sequentially includes a circuit board (2), at least one light source (3) electrically connected to the circuit board (2), and a light guide element (4) along the light-emitting direction. The light guide element (4) sequentially includes at least one light-incident portion (401), a light guide portion (402), and a light-emitting portion (403) along the light-emitting direction. A first reflecting surface (402a) and a second reflecting surface (402b) are formed on the light guide portion (402). After the light is focused and collimated by the light-incident portion (401), it is sequentially reflected by the first reflecting surface (402a) and the second reflecting surface (402b), and finally emitted by the light-emitting portion (403). The present invention also discloses a headlamp including the lamp assembly and a vehicle including the headlamp. The lamp assembly of the present invention has a simple structure, strong practicability, and a flexible and variable lighting effect.

Description

Technical Field

[0001] The present invention relates to automotive headlights, and specifically, to a lighting fixture assembly. In addition, the present invention also relates to a headlight and a vehicle including the lighting fixture assembly. Background Art

[0002] With the rapid development of automotive headlight technology, consumers have put forward higher-level requirements for the cool appearance of headlights. In recent years, with the rapid development of virtual reality technology, a series of three-dimensional products with a sense of technology have gradually been applied in various fields, and the pursuit of three-dimensional effects in the headlight field has also been increasing day by day. In recent years, affected by the downward pressure of the global economy, the current automotive market has become increasingly strict in controlling the cost of lighting fixtures, and cost reduction will be the main theme of future automotive enterprise reforms. Therefore, designing a product with high quality, low price and a three-dimensional effect with a sense of technology has become the favored direction of automotive manufacturers and consumers.

[0003] Currently, the existing headlight systems with three-dimensional effects have low optical efficiency. If they are to be applied to brake lights, turn signals and daytime running lights with high light intensity requirements by regulations, high-power light sources, especially high-power LED light sources, are required to meet the regulatory requirements. Such high-power LED light sources will cause a large amount of heat to be generated during the use of the headlights. However, the structures of the existing headlight systems with three-dimensional effects are generally relatively compact and relatively enclosed, resulting in it being very difficult for the heat dissipation performance of the headlight systems with three-dimensional effects to meet the use requirements, making the practicality of the headlight system not strong, and because of the high requirements for heat dissipation performance, the styles of the headlight system are also relatively monotonous.

[0004] For the above reasons, it is difficult for the prior art to effectively ensure the strong practicality and the requirements for flexible lighting effects of the headlight system with three-dimensional effects. Summary of the Invention

[0005] The first problem to be solved by the present invention is to provide a lighting fixture assembly, which has a simple structure, strong practicality and flexible lighting effects.

[0006] In addition, the second problem to be solved by the present invention is to provide a headlight, the lighting fixture assembly of which has a simple structure, strong practicality and flexible lighting effects.

[0007] Furthermore, the third problem to be solved by the present invention is to provide a vehicle, the headlight of which has strong practicality and flexible lighting effects.

[0008] To solve the above technical problems, on the one hand, the present invention provides a lighting fixture assembly, which sequentially includes a circuit board, at least one light source electrically connected to the circuit board, and a light guiding element along the light emitting direction. The light guiding element sequentially includes at least one light incident portion, a light guiding portion, and a light emitting portion along the light emitting direction. A first reflecting surface and a second reflecting surface are formed on the light guiding portion. After the light is focused and collimated by the light incident portion, it is sequentially reflected by the first reflecting surface and the second reflecting surface, and finally emitted by the light emitting portion.

[0009] As a preferred structural form, the light guiding portion is a frustum structure. The first reflecting surface is formed on the outer peripheral surface of the light guiding portion. A conical cavity is provided in the central area of the end of the light guiding portion close to the light incident portion, and the cavity wall of the conical cavity forms the second reflecting surface.

[0010] More preferably, the first reflecting surface gradually approaches the central axis of the light guiding portion from the rear end to the front end.

[0011] Further preferably, the cavity wall of the conical cavity gradually approaches the central axis of the light guiding portion along the light emitting direction.

[0012] Typically, the number of the light incident portions is multiple, and the multiple light incident portions are circumferentially and uniformly distributed around the center of the bottom surface of the conical cavity, and the light sources are arranged in one-to-one correspondence with the light incident portions.

[0013] As another preferred structural form, the light incident portion is a condenser cup structure. A concave cavity is provided at the rear end of the condenser cup structure, and a protrusion is provided at the bottom of the concave cavity. The outer contour surface of the condenser cup structure is a curved surface structure with a gradually increasing diameter from the rear end to the front end opening; or the structure of the light incident portion is the same as that of a Fresnel lens, and an arc-shaped optical surface is formed in the central area of the light incident portion; or the light incident portion is a collimating mirror.

[0014] As a specific embodiment, the light emitting portion is a cylinder structure, the light emitting portion is provided on the end surface of the light guiding portion away from the light incident portion, and the end surface of the light emitting portion away from the light guiding portion forms a light emitting surface.

[0015] As another specific embodiment, it further includes a lamp housing. A through hole is provided on one end surface of the lamp housing, and the light emitting portion is adapted to be inserted into the through hole.

[0016] More specifically, the light emitting surface is flush with the front end surface of the lamp housing; or the light emitting surface protrudes from the front end surface of the lamp housing.

[0017] Further specifically, the light emitting surface is circular, C-shaped, L-shaped or a free curve shape.

[0018] As yet another specific embodiment, a leather pattern or a scattering layer is provided on the light emitting surface.

[0019] In addition, the present invention further provides a vehicle lamp, which includes the lamp assembly according to any one of the above technical solutions.

[0020] Furthermore, the present invention further provides a vehicle, which includes the vehicle lamp according to the above technical solution.

[0021] Through the above technical solution, the lamp assembly of the present invention sequentially includes a circuit board, at least one light source electrically connected to the circuit board, and a light guide element along the light emitting direction. The light guide element sequentially includes at least one light incident portion, a light guide portion, and a light emitting portion along the light emitting direction. A first reflection surface is formed on the outer peripheral surface of the light guide portion. A conical cavity is provided in the central region of one end of the light guide portion close to the light incident portion, and the cavity wall of the conical cavity forms a second reflection surface. After the light is collected and collimated by the light incident portion, it is sequentially reflected by the first reflection surface and the second reflection surface, and finally emitted by the light emitting portion. The lamp assembly of the present invention uses the light incident portion to collect light, and at the same time uses one light emitting portion on the light guide element to emit light to form a lighting effect with a three-dimensional effect. The structure is relatively compact and the optical efficiency is high. In addition, multiple light sources of the present invention are arranged on one circuit board, and multiple low-power light sources can be used instead of high-power light sources, and it can meet the regulatory requirements, solve the heat dissipation problem of using high-power light sources, and can realize the diversification of the lighting effect by controlling the on / off and color of each light source.

[0022] Other advantages of the present invention and the technical effects of the preferred embodiments will be further described in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an exploded view of a specific embodiment of the lamp assembly of the present invention;

[0024] Figure 2 is a schematic structural diagram of a specific embodiment of the lamp assembly of the present invention;

[0025] Figure 3 is a schematic structural diagram of a specific embodiment of the light guide element of the present invention;

[0026] Figure 4 is Figure 3 a bottom view of

[0027] Figure 5 a light ray schematic diagram of a specific embodiment of the lamp assembly of the present invention;

[0028] Figure 6 is one of the front lighting effect diagrams of the lamp assembly of a specific embodiment of the present invention;

[0029] Figure 7It is one of the side lighting effect diagrams of the lamp assembly according to the specific embodiment of the present invention;

[0030] Figure 8 It is the second front lighting effect diagram of the lamp assembly according to the specific embodiment of the present invention;

[0031] Figure 9 It is the second side lighting effect diagram of the lamp assembly according to the specific embodiment of the present invention;

[0032] Figure 10 It is one of the structure diagrams of the light incident part with the same structure as the Fresnel lens of the present invention;

[0033] Figure 11 It is Figure 10 The sectional view of;

[0034] Figure 12 It is the light ray diagram of the single condenser cup structure of the present invention;

[0035] Figure 13 It is the schematic diagram of the front lighting effect of the single condenser cup structure of the present invention;

[0036] Figure 14 It is the schematic diagram of the front lighting effect of the lamp assembly with the light incident part of the Fresnel lens structure of the present invention.

[0037] Explanation of reference numerals

[0038] 1 Lamp housing 101 Through hole

[0039] 2 Circuit board 3 Light source

[0040] 4 Light guide element 401 Light incident part

[0041] 401a Arc-shaped optical surface 402 Light guide part

[0042] 402a First reflection surface 402b Second reflection surface

[0043] 403 Light exit part 403a Light exit surface

[0044] 404 Conical cavity Detailed implementation manners

[0045] The following will describe in detail the specific implementation manners of the present invention with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the present invention, and the protection scope of the present invention is not limited to the following specific implementation manners.

[0046] First of all, it should be noted that some orientation words involved in the following description to clearly illustrate the technical solution of the present invention, such as "rear", "front", etc., are all the meanings analogized according to the orientation indicated by the light exit direction. For example, taking the light guide element 4 as an example, ifFigure 2 As shown in the figure, one end of the light guide element 4 close to the light source 3 is the rear end, and the end far from the light source 3 is the front end; it can also be understood that the end where light enters is the rear end, and the end where light exits is the front end, that is, the end where the light incident part 401 is located is the rear end, and the end where the light exit part 403 is located is the front end.

[0047] In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0048] As Figure 1 and Figure 2 As shown in the figure, the present invention provides a lamp assembly, which sequentially includes a circuit board 2, at least one light source 3 electrically connected to the circuit board 2, and a light guide element 4 along the light exit direction. Among them, the light guide element 4 sequentially includes at least one light incident part 401, a light guide part 402, and a light exit part 403 along the light exit direction. A first reflection surface 402a and a second reflection surface 402b are formed on the light guide part 402. After the light is focused and collimated by the light incident part 401, it is sequentially reflected by the first reflection surface 402a and the second reflection surface 402b, and finally exits from the light exit part 403.

[0049] Preferably, the lamp assembly of the present invention further includes a lamp housing 1. A through hole 101 is provided on one end face of the lamp housing 1, and the light exit part 403 is adapted to be inserted into the through hole 101.

[0050] From Figure 2It can be seen that the lamp housing 1 in the lamp assembly of the present invention is a hollow cylindrical structure, one end is a closed structure, and a through hole 101 is provided on the end surface of the other end. This hollow cylindrical structure is not a completely closed structure at both ends. A cavity structure with one end open can be adopted, and a lid is provided at the open end. The lid and the open cavity structure are connected to form a hollow cylindrical structure. The through hole 101 can be provided in the central area of the lid. Of course, the through hole 101 can also be provided at the closed end of the cavity structure. One end of the lamp housing 1 where the circuit board 2 is provided can be provided with a lid or not, and the circuit board 2 can be directly installed on the radiator behind the lamp housing 1. Moreover, the lamp housing 1 of the present invention can also be formed by connecting two open cavity structures with the same shape. Threaded connection structures or snap connection structures are provided at the open ends of the two cavity structures, and the through hole 101 is provided at the closed end of one of the open cavity structures. However, the hollow cylindrical structure is not limited to the above structural forms and other combination methods can also be adopted, and the purpose is to form a lamp housing 1 that can accommodate the circuit board 2, the light source 3, and the light guiding element 4.

[0051] The light source 3 in the lamp assembly of the present invention can be an RGB light source, a two-color LED light source, a multi-color LED light source, a laser light source, etc., and at least includes one light source 3. The light source 3 is electrically connected to a circuit board 2, and the circuit board 2 can also be replaced by a flexible circuit board 2 to meet the modeling requirements with a drop in height before and after multiple light sources 3. When the number of light sources 3 is multiple, different combined three-dimensional lighting effects and dynamic effects can be achieved by controlling each light source 3, such as dynamic lighting effects like running lights, breathing lights, and flowing water lights. At the same time, the light guiding element 4 of the present invention has high optical efficiency, and multiple low-power light sources 3 can be used to meet the requirements of vehicle lamp regulations such as position lights, brake lights, turn signals, and daytime running lights, and can well solve the heat dissipation problem of the system, with strong practicability.

[0052] As Figure 3 and Figure 4 shown, as a preferred embodiment of the present invention, the light guiding part 402 is a frustum structure, the first reflecting surface 402a is formed on the outer peripheral surface of the light guiding part 402, a conical cavity 404 is provided in the central area of one end of the light guiding part 402 close to the light incident part 401, and the cavity wall of the conical cavity 404 forms a second reflecting surface 402b.

[0053] More preferably, the first reflecting surface 402a gradually approaches the central axis of the light guiding part 402 from the rear end to the front end.

[0054] Further preferably, the cavity wall of the conical cavity 404 gradually approaches the central axis of the light guiding part 402 along the light emitting direction, so that the second reflecting surface 402b gradually approaches the central axis of the light guiding part 402 along the light emitting direction.

[0055] Here, it needs to be explained that the light guide part 402 has a frustum structure, and the rotation center line of the light guide part 402 can be regarded as the central axis of the light guide part 402, that is, the center connection line of the two circular end faces of the light guide part 402.

[0056] As can be seen from Figure 3 , on the transverse section of the light guide element 4, the transverse section lines of the first reflection surface 402a and the second reflection surface 402b are parallel. Of course, according to the requirements of the three-dimensional lighting effect, there can also be a certain included angle between the transverse section lines of the first reflection surface 402a and the second reflection surface 402b. Here, it needs to be explained that the transverse section line refers to the line formed by the intersection of the virtual plane that perpendicularly cuts the light guide element 4 and the first reflection surface 402a and the second reflection surface 402b after the virtual plane cuts the light guide element 4.

[0057] As can be seen from Figure 5 , on the outer peripheral surface of the light guide part 402, the first reflection surface 402a is formed, and the cavity wall of the conical cavity 404 forms the second reflection surface 402b. The light emitted by the light source 3 is focused and collimated by the light incident part 401, and then successively reflected by the first reflection surface 402a and the second reflection surface 402b, and finally emitted from the light emitting surface 403a.

[0058] At this time, if the light incident part 401 has a condenser cup structure, a concave cavity is provided at the rear end of the condenser cup structure, a protrusion is provided at the bottom of the concave cavity, and the outer contour surface of the condenser cup structure is a curved surface structure with a gradually increasing diameter from the rear end to the front end opening. Generally, the number of condenser cup structures is multiple, and the multiple condenser cup structures are circumferentially evenly distributed with the center of the bottom surface of the conical cavity 404 as the center, and the light source 3 is arranged in one-to-one correspondence with the condenser cup structure. It can be seen that the optical surface of the light guide element 4 is composed of the outer contour surface of the condenser cup structure, the peripheral surfaces of the concave cavity, the surface of the protrusion, the first reflection surface 402a, the second reflection surface 402b, and the light emitting surface 403a. The light emitted by the light source 3 is focused and collimated by the condenser cup structure and then enters the light guide part 402, is reflected by the first reflection surface 402a and the second reflection surface 402b and then enters the light emitting part 403, and finally is emitted from the light emitting surface 403a. For the light of each light source 3, after being focused and collimated by the condenser cup structure, if an imaging screen is vertically arranged in front of the condenser cup structure, the outgoing light of the condenser cup structure is projected on this imaging screen, and its imaging pattern is as Figure 13The lighting effect of the single condenser cup structure shown. Among them, the circular bright spot in the central area of the imaging pattern is formed by the projection of light rays on the surface of the protrusion in the condenser cup structure, and the bright rings around are formed by the projection of light rays after being reflected by the outer contour surface of the condenser cup structure. The annular dark area between the circular bright spot in the central area and the bright rings around is caused by the draft angle of the peripheral surface of the concave cavity of the condenser cup structure and the Lambert emission characteristic of the light source. It can be seen from here that the size of the circular bright spot in the central area can be changed by adjusting the size of the surface of the protrusion in the concave cavity. It should be explained that the Lambert emission characteristic means that the luminous intensity of the emitted light rays of the light source decreases as the angle between it and the positive light-emitting direction increases. As Figure 12 shown, after the light rays pass through the peripheral surface of the concave cavity of the condenser cup structure, they are refracted outward, and basically no light rays are emitted directly in front of the peripheral surface of the concave cavity with the draft angle. This part forms the dark area part. And according to the Lambert emission characteristic, the luminous intensity of the light rays received by the peripheral surface of the concave cavity will gradually weaken from front to back. Therefore, the luminous intensity of the light rays reflected by the outer contour surface of the condenser cup structure will gradually weaken from outside to inside.

[0059] When the light pattern with the above-mentioned imaging pattern shown in Figure 13 is projected onto the first reflecting surface 402a, the light pattern will be stretched into the single elliptical petal shape shown in Figure 6 . The brightness of the outside of the petal is relatively high because the projection distance of the light rays onto the first reflecting surface 402a is relatively short, and the intensity of the projected light pattern is relatively bright. While the brightness of the root of the petal is relatively low because the projection distance of the light rays onto the first reflecting surface 402a is relatively long, and the intensity of the projected light pattern is relatively dim. This change in brightness makes the contour brightness of the petal gradually dim from outside to inside. This pattern of bright and dark changes is finally projected through the light-emitting surface 403a, and through this bright and dark change, a three-dimensional visual effect is given to people.

[0060] And multiple light sources 3 together constitute the Figures 6 to 9 final lighting effect. In this way, it can be seen that not only can the lighting effect be changed by controlling the number and position of the light-incident parts 401, but also different lighting effects can be formed by controlling the state of each light source 3. Its change methods are relatively numerous and the change effects are relatively good.

[0061] Optionally, as shown in Figures 10 to 11 , the structure of the light-incident part 401 can also be the same as that of a Fresnel lens. An arc-shaped optical surface 401a is formed in the central area of the light-incident part 401. The lighting effect of the lamp assembly with this light-incident part 401 is as shown in Figure 14As shown, the outgoing light rays of the arc-shaped optical surface 401a form a central bright spot correspondingly. Here, the size of the central bright spot and its proportion in the petals can be controlled by controlling the arc-shaped optical surface 401a. Different numbers and brightness levels of the petals, as well as different sizes of the central bright spot and its proportion in the petals, can all form different lighting effects.

[0062] Optionally, the light incident part 401 of the present invention can also be a collimating mirror, or other structural forms, which all fall within the protection scope of the present invention.

[0063] As another preferred embodiment of the present invention, the light guiding element 4 is made of PC, or PMMA, or silica gel, or composite rubber, or PET, or PA, or TAC, or a glass optical element.

[0064] As a specific structural form of the present invention, the light emitting part 403 is of a cylindrical structure, the light emitting part 403 is arranged on the end face of the light guiding part 402 far away from the light incident part 401, and one end face of the light emitting part 403 far away from the light guiding part 402 forms a light emitting surface 403a.

[0065] More specifically, the light emitting surface 403a is flush with the front end face of the lamp housing 1.

[0066] Optionally, the light emitting surface 403a protrudes from the front end face of the lamp housing 1.

[0067] As another specific structural form of the present invention, the light emitting surface 403a is circular, C-shaped, L-shaped or a free curve shape. From this, it can be seen that the shape of the light emitting part 403 will also change according to the change of the shape of the light emitting surface 403a, and the through hole 101 will also change accordingly. These changes made for the lighting effect all fall within the protection scope of the present invention.

[0068] As yet another specific structural form of the present invention, a leather pattern or a scattering layer is provided on the light emitting surface 403a. Adding a leather pattern or a scattering layer on the light emitting surface 403a can make the lighting effect more uniform and the viewing effect at a large angle better. Among them, the scattering layer is a plastic layer or a silica gel layer containing a light scattering material, etc.

[0069] In addition, the present invention also provides a vehicle lamp, including the lamp assembly according to any one of the above technical solutions.

[0070] Furthermore, the present invention also provides a vehicle, which has the vehicle lamp according to the above technical solution.

[0071] As can be seen from the above description, the lamp assembly of the present invention sequentially includes a circuit board 2, at least one light source 3 electrically connected to the circuit board 2, and a light guide element 4 along the light-emitting direction. Among them, the light guide element 4 sequentially includes at least one light-incident portion 401, a light guide portion 402, and a light-emitting portion 403 from back to front. A first reflection surface 402a is formed on the outer peripheral surface of the light guide portion 402. A conical cavity 404 is provided in the central region of one end of the light guide portion 402 close to the light-incident portion 401. The cavity wall of the conical cavity 404 forms a second reflection surface 402b. After the light is concentrated and collimated by the light-incident portion 401, it is sequentially reflected by the first reflection surface 402a and the second reflection surface 402b, and finally emitted by the light-emitting portion 403. The lamp assembly of the present invention can achieve a three-dimensional lighting effect. The light-incident portion 401 with a condenser cup structure or a Fresnel lens structure is used to collect light, with high optical efficiency and a compact structure. Thus, multiple low-power light sources 3 can be used to meet the requirements of vehicle lamp regulations such as position lamps, brake lamps, turn signals, and daytime running lamps, well solving the heat dissipation problem caused by using high-power light sources, with strong practicability. It can also form a light distribution pattern in the shape of a petal with a gradual change in brightness and darkness, giving a three-dimensional visual effect. At the same time, the brightness and on / off of multiple light sources 3 can be controlled to achieve effect modes such as running lights, flowing lights, and breathing lights; and through the change of the color of the light source, a colorful lighting effect can be achieved, with flexible and variable forms.

[0072] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0073] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0074] In addition, any combination can be made between various different embodiments of the present invention as long as it does not violate the idea of the present invention, and it should also be regarded as the content disclosed by the present invention.

Claims

1. A lighting fixture assembly, characterized in that, it sequentially includes a circuit board (2), at least one light source (3) electrically connected to the circuit board (2), and a light guide element (4) along the light-emitting direction, wherein the light guide element (4) sequentially includes at least one light-incident part (401), a light-guiding part (402), and a light-emitting part (403) along the light-emitting direction. A first reflecting surface (402a) and a second reflecting surface (402b) are formed on the light-guiding part (402), and there is an included angle between the transverse cross-lines of the first reflecting surface (402a) and the second reflecting surface (402b); the light-emitting part (403) is disposed on an end surface of the light-guiding part (402) away from the light-incident part (401). One end surface of the light-emitting part (403) away from the light-guiding part (402) forms a light-emitting surface (403a). After the light is concentrated and collimated by the light-incident part (401), it is sequentially reflected by the first reflecting surface (402a) and the second reflecting surface (402b), and finally emitted from the same light-emitting surface (403a) to form an imaging pattern with bright and dark changes; wherein, the light-incident part (401) is a condenser cup structure. A concave cavity is provided at the rear end of the condenser cup structure, and a protrusion is provided at the bottom of the concave cavity. The outer contour surface of the condenser cup structure is a curved surface structure with a gradually increasing diameter from the rear end to the front end opening. The circular bright spot in the central area of the imaging pattern is formed by the light projected from the surface of the protrusion in the condenser cup structure. The bright ring around the imaging pattern is formed by the light projected after being reflected by the outer contour surface of the condenser cup structure. The concave cavity and the protrusion are arranged such that the light is refracted outward after passing through the peripheral surfaces of the concave cavity of the condenser cup structure, rather than being emitted directly in front of the peripheral surfaces of the concave cavity with a draft angle, so as to form the dark area part of the imaging pattern; or the structure of the light-incident part (401) is the same as that of a Fresnel lens. An arc-shaped optical surface (401a) is formed in the central area of the light-incident part (401), and the size of the central bright spot of the imaging pattern is controlled by the arc-shaped optical surface (401a).

2. The lighting fixture assembly according to claim 1, characterized in that, the light-guiding part (402) is a frustum structure. The first reflecting surface (402a) is formed on the outer peripheral surface of the light-guiding part (402). A conical cavity (404) is provided in the central area of one end of the light-guiding part (402) close to the light-incident part (401), and the cavity wall of the conical cavity (404) forms the second reflecting surface (402b).

3. The lighting fixture assembly according to claim 2, characterized in that, the first reflecting surface (402a) gradually approaches the central axis of the light-guiding part (402) from the rear end to the front end.

4. The lighting fixture assembly according to claim 2, characterized in that, the cavity wall of the conical cavity (404) gradually approaches the central axis of the light-guiding part (402) along the light-emitting direction.

5. The lighting fixture assembly according to claim 2, characterized in that, The number of the light incident parts (401) is multiple, and the multiple light incident parts (401) are circumferentially and uniformly distributed with the center of the bottom surface of the conical cavity (404) as the center of the circle, and the light source (3) is arranged in one-to-one correspondence with the light incident part (401).

6. The lamp assembly according to claim 1, characterized in that, the light incident part (401) is a condenser cup structure, a concave cavity is arranged at the rear end of the condenser cup structure, a protrusion is arranged at the bottom of the concave cavity, and the outer contour surface of the condenser cup structure is a curved surface structure with a gradually increasing diameter from the rear end to the front end opening; or the structure of the light incident part (401) is the same as that of a Fresnel lens, and an arc-shaped optical surface (401a) is formed in the central area of the light incident part (401); or the light incident part (401) is a collimating reflector.

7. The lamp assembly according to any one of claims 1 to 6, characterized in that, the light emitting part (403) is a cylindrical structure.

8. The lamp assembly according to any one of claim 7, characterized in that, it further includes a lamp housing (1), a through hole (101) is arranged on one end face of the lamp housing (1), and the light emitting part (403) is adapted to be inserted into the through hole (101).

9. The lamp assembly according to claim 8, characterized in that, the light emitting surface (403a) is flush with the front end surface of the lamp housing (1); or the light emitting surface (403a) protrudes from the front end surface of the lamp housing (1).

10. The lamp assembly according to claim 7, characterized in that, the light emitting surface (403a) is circular, C-shaped, L-shaped or a free curve shape.

11. The lamp assembly according to claim 7, characterized in that, a leather pattern or a scattering layer is arranged on the light emitting surface (403a).

12. A vehicle headlamp, characterized in that, it includes the lamp assembly according to any one of claims 1 to 11.

13. A vehicle, characterized in that, it includes the vehicle headlamp according to claim 12.

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