Vehicular lighting fixture

Abstract

To prevent the occurrence of a crack in a lens caused by laser welding.SOLUTION: A vehicular lighting fixture comprises: a light source for emitting light; and a lens joint body comprising at least three lenses arranged in an optical axis direction, and in which the adjacent lenses are joined by laser welding. The lenses each comprise: a light transmission part through which the light emitted from the light source is transmitted; and a welding protrusion part protruded in a direction orthogonal to the optical axis direction from an outer periphery of the light transmission part, and laser-welded. The lens located in the middle in a joining direction is provided as a middle lens. A light condensing concave part opened in a predetermined direction is formed in the welding protrusion part of the middle lens. A space in the light condensing concave part is formed as a light condensing space in which the focus of laser light is located at the time of the laser welding.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to the technical field of a vehicle lamp having a lens assembly in which three or more lenses are joined by laser welding. [Background technology]

[0002] Some vehicle lamps are equipped with a drawing lamp unit for projecting a drawing pattern onto the road surface, and some of these vehicle lamps have three or more lenses arranged in the optical axis direction in order to correct lens distortion and reduce distortion of the drawing pattern (see, for example, Patent Document 1).

[0003] However, in the vehicle lamp described in Patent Document 1, multiple lenses are attached separately to the attachment member, which may complicate the structure for attaching the lenses and the assembly process of the drawing lamp unit. Therefore, by using a lens assembly made up of three or more lenses that have been pre-attached, it is possible to simplify the attachment structure and the assembly process.

[0004] One method for joining lenses is, for example, a joining method by laser welding (see, for example, Patent Document 2). Patent Document 2 describes a method for joining two lenses (referred to in Patent Document 2 as "materials that are transparent to laser light") by laser welding. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2020-131922 [Patent Document 2] Japanese Patent Application Laid-Open No. 2010-194908 Summary of the Invention [Problem to be solved by the invention]

[0006] Incidentally, in a configuration using a lens cemented body in which three or more lenses are cemented together as described in Patent Document 1, it is possible to sufficiently correct lens distortion aberration, and it is possible to ensure a good projection state of a drawing pattern in a vehicle lamp equipped with a drawing lamp unit.

[0007] However, when joining three or more lenses by laser welding, it may be necessary to position the focal point of the laser light inside the lens in order to irradiate the welded surface with laser light of an appropriate energy density. If the focal point of the laser light is positioned inside the lens, excessive energy of the laser light will be concentrated, which may cause cracks in the lens.

[0008] Therefore, an object of the present invention is to prevent the occurrence of cracks in lenses due to laser welding. [Means for solving the problem]

[0009] The vehicle lamp according to the present invention comprises a light source that emits light, and a lens assembly having at least three lenses lined up in the optical axis direction and joined by laser welding adjacent lenses, wherein the lenses have a light-transmitting portion through which the light emitted from the light source passes and a welding protrusion that protrudes from the outer periphery of the light-transmitting portion in a direction perpendicular to the optical axis direction and is laser-welded, and at least one of the lenses positioned in the middle in the joining direction is provided as an intermediate lens, and a light-collecting recess that opens in a predetermined direction is formed in the welding protrusion of the intermediate lens, and the space of the light-collecting recess is formed as a light-collecting space in which the focus of laser light is located during laser welding.

[0010] This makes it possible for the energy of the laser light to be highest in the focused space, making it difficult for excessive energy of the laser light to be concentrated in the lens. [Effects of the Invention]

[0011] According to the present invention, the energy of the laser light is highest in the focused space, so that excessive energy of the laser light is less likely to be concentrated on the lens, and the occurrence of cracks in the lens due to laser welding can be prevented. [Brief explanation of the drawings]

[0012] [Figure 1] 2 to 11 show an embodiment of the vehicle lamp of the present invention, and this figure is a schematic cross-sectional view of the vehicle lamp. [Figure 2] FIG. [Figure 3] FIG. 2 is a schematic front view of an intermediate lens. [Figure 4] FIG. 10 is a cross-sectional view showing a state in which a lens is irradiated with laser light. [Figure 5] FIG. 10 is a cross-sectional view illustrating laser welding in a lens cemented body formed of four lenses. [Figure 6] 10 is a cross-sectional view showing a state in which a holding protrusion of a lens holder is fitted into a light-collecting recess. FIG. [Figure 7] FIG. 10 is a cross-sectional view of a lens cemented body having another configuration. [Figure 8] FIG. 8 is a schematic front view of an intermediate lens in the lens cemented structure shown in FIG. [Figure 9] FIG. 10 is a cross-sectional view of a lens cemented body having yet another configuration. [Figure 10] FIG. 10 is a schematic front view of an intermediate lens having yet another configuration. [Figure 11] 11 is a cross-sectional view of a welding protrusion in the lens cemented body having the intermediate lens shown in FIG. 10. DETAILED DESCRIPTION OF THE INVENTION

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle lamp according to an embodiment of the present invention will now be described with reference to the accompanying drawings.

[0014] In the following, the front, rear, up, down, left and right directions will be described assuming that the direction of light emitted from the vehicle lamp is forward. However, the front, rear, up, down, left and right directions shown below are for the convenience of explanation, and the present invention is not limited to these directions in terms of implementation.

[0015] The vehicle lamp according to the present invention is provided, for example, as a combination lamp having a plurality of lamp units, one of which is a drawing lamp unit. However, the vehicle lamp according to the present invention may be configured to include only a drawing lamp unit. Only the drawing lamp unit will be described in detail below.

[0016] <Vehicle lighting fixture configuration> First, the configuration of a vehicle lamp 1 will be described (see FIGS. 1 to 3).

[0017] The vehicle lamp 1 is attached to, for example, both left and right ends of the front end of the vehicle body.

[0018] The vehicle lamp 1 has a lamp housing 2 with an opening at the front end and a cover 3 that closes the opening of the lamp housing 2 (see Figure 1). The lamp housing 2 and the cover 3 form a lamp outer casing 4, and the internal space of the lamp outer casing 4 forms a lamp chamber 5.

[0019] A drawing lamp unit 6 is disposed in the lamp chamber 5. The drawing lamp unit 6 has a heat sink 7, a light source 8, a lens holder 9, and a lens assembly 10.

[0020] The heat sink 7 is made of, for example, a metal material and has a plate-shaped base portion 7a facing in the front-rear direction and a plurality of heat dissipation fins 7b protruding rearward from the base portion 7a. The heat dissipation fins 7b are arranged side by side in the left-right direction, for example. The heat sink 7 is attached to, for example, a bracket (not shown).

[0021] For example, a light emitting diode (LED) is used as the light source 8. The light source 8 is mounted on, for example, a circuit board (not shown). The circuit board is disposed on the base portion 7a of the heat sink 7.

[0022] The lens holder 9 has an annular frame portion 11 whose axial direction is in the front-to-rear direction and a cylindrical portion 12 that protrudes rearward from the outer periphery of the frame portion 11, and the rear end of the cylindrical portion 12 is attached to the base portion 7a of the heat sink 7 by screws or the like. The space inside the frame portion 11 is formed as a lens insertion hole 13. When the lens holder 9 is attached to the heat sink 7, the lens insertion hole 13 is located in front of the light source 8.

[0023] The lens assembly 10 is made up of three lenses joined together and aligned in the optical axis direction, and is held by the lens holder 9 with the optical axis oriented in the front-to-rear direction. The lens assembly 10 is attached, for example, by adhesive to the inner surface of the lens holder 9 with its front end inserted into the lens insertion hole 13. Note that the lens assembly 10 may be made up of four or more lenses joined together.

[0024] The lenses that make up the lens cemented assembly 10 include, for example, an incident-side lens 14, an exit-side lens 15, and an intermediate lens 16. The incident-side lens 14 is located at the rearmost position in the optical axis direction, the exit-side lens 15 is located at the frontmost position in the optical axis direction, and the intermediate lens 16 is located between the incident-side lens 14 and the exit-side lens 15. When the lens cemented assembly is made up of four or more lenses, multiple intermediate lenses are provided.

[0025] The lens cemented assembly 10 is made of a transparent resin material, such as polycarbonate or acrylic. The entrance lens 14, exit lens 15, and intermediate lens 16 may all be made of the same resin material, or may be made of different resin materials.

[0026] The incident-side lens 14 has a first light-transmitting portion 17 through which light emitted from the light source 8 passes, and an annular first welding protrusion 18 that protrudes from the outer periphery of the first light-transmitting portion 17 in a direction perpendicular to the optical axis direction (see FIGS. 1 to 3). The first light-transmitting portion 17 is formed, for example, as a plano-convex lens with a convex front surface. A plurality of first bonding portions 19 are formed on the front surface of the first welding protrusion 18, spaced apart in the circumferential direction. The first bonding portions 19 may be subjected to a treatment to promote melting, such as texturing or painting.

[0027] The output-side lens 15 has a second light-transmitting portion 20 through which light emitted from the light source 8 passes, and an annular second welding protrusion 21 that protrudes from the outer periphery of the second light-transmitting portion 20 in a direction perpendicular to the optical axis direction. The second light-transmitting portion 20 is formed, for example, as a biconvex lens. A plurality of second bonding portions 22 are formed on the rear surface of the second welding protrusion 21, spaced apart in the circumferential direction. Similar to the first bonding portions 19, the second bonding portions 22 may also be subjected to a treatment to promote melting.

[0028] The intermediate lens 16 has a third light-transmitting portion 23 through which the light emitted from the light source 8 passes, and an annular third welding protrusion 24 that protrudes in a direction perpendicular to the optical axis from the outer periphery of the third light-transmitting portion 23. The third light-transmitting portion 23 is formed, for example, as a biconcave lens.

[0029] A plurality of light-collecting recesses 25, which are open in the protruding direction, are formed spaced apart in the circumferential direction on the third welding projection 24 (see FIGS. 2 and 3). The spaces between the light-collecting recesses 25 are formed as light-collecting spaces S. The light-collecting recesses 25 may be formed around the entire circumference of the third welding projection 24. However, by forming the light-collecting recesses 25 spaced apart in the circumferential direction, high strength of the intermediate lens 16 can be ensured.

[0030] A third bonding portion 26 is formed on the rear surface of each third welding protrusion 24, rearward of the light-collecting recess 25, and the third bonding portion 26 is formed at a position coinciding with the first bonding portion 19 of the incident-side lens 14. A fourth bonding portion 27 is formed on the front surface of each third welding protrusion 24, frontward of the light-collecting recess 25, and the fourth bonding portion 27 is formed at a position coinciding with the second bonding portion 22 of the exit-side lens 15. The third bonding portion 26 and the fourth bonding portion 27 are formed on opposite sides of the light-collecting recess 25. Similar to the first bonding portion 19, the third bonding portion 26 and the fourth bonding portion 27 may also be subjected to a treatment to promote melting.

[0031] The first bonding portion 19 of the first welding protrusion 18 and the third bonding portion 26 of the third welding protrusion 24 are joined by laser welding, and the second bonding portion 22 of the second welding protrusion 21 and the fourth bonding portion 27 of the third welding protrusion 24 are joined by laser welding, thereby forming the lens bonded body 10.

[0032] In the lens assembly 10, light emitted from the light source 8 enters the rear surface of the entrance lens 14, passes through the intermediate lens 16, and exits from the front surface of the exit lens 15. The light emitted from the exit lens 15 passes through the cover 3 and is irradiated forward. At this time, in the vehicle lamp 1, the lens assembly 10 corrects the lens distortion aberration when the light is irradiated, so that a good projection state of the drawing pattern drawn on the road surface can be ensured.

[0033] Furthermore, in the vehicle lamp 1, the lens assembly 10, in which three or more lenses are joined together, is attached to the lens holder 9, so there is no need to attach multiple lenses to the lens holder 9 individually, which improves the positional accuracy of each lens and the lens holder 9 and simplifies the assembly process of the drawing lamp unit 6.

[0034] <Lens cementing> Next, the bonding of the lenses that make up the lens cemented structure 10 will be described (see FIG. 4).

[0035] As described above, the lens bonded body 10 is formed by joining three lenses together by laser welding. When the lenses are laser welded, the three lenses are held in a stacked state by, for example, a holding jig 100, and the lenses are irradiated with laser light L. The holding jig 100 has, for example, two pressing portions 101 that press the lenses from both sides in the optical axis direction. The length of the pressing portions 101 in the direction perpendicular to the optical axis direction of the holding jig 100 is shorter than the depth of the light-collecting recess 25.

[0036] Before being joined, the incident-side lens 14, intermediate lens 16, and exit-side lens 15 are stacked in a lined-up state, and are held in holding jig 100 by pressing the rear surface of first welding protrusion 18 on incident-side lens 14 and the front surface of second welding protrusion 21 on exit-side lens 15 with pressing portions 101, respectively. Note that holding jig 100 may be configured so that an engaging protrusion that is inserted into and engaged with light-collecting recess 25 is provided between two pressing portions 101 in the direction in which the two pressing portions 101 are aligned.

[0037] While the lens is held by the holding jig 100, the lens is irradiated with laser light L, for example, from the side of the output-side lens 15. The laser light L is incident on the front surface of the second welding protrusion 21 on the output-side lens 15, and a focus F where the energy is most concentrated is located in the light-collecting space S. The laser light L is set to an intensity that applies appropriate energy to the joining portions, that is, the second joining portion 22 and the fourth joining portion 27, and the first joining portion 19 and the third joining portion 26, and not excessive energy suitable for welding is irradiated to the joining portions. By irradiating the laser light L, the energy of the laser light L melts and joins the second joining portion 22 and the fourth joining portion 27, and also melts and joins the first joining portion 19 and the third joining portion 26.

[0038] In the vehicle lamp 1, the joined lens assembly 10 is made up of three lenses, each of which includes an intermediate lens 16. This makes it possible to simultaneously apply an appropriate amount of energy from the laser light L to both sides of the third welding protrusion 24 of the intermediate lens 16, making it possible to simultaneously weld all of the lenses that make up the joined lens assembly 10, thereby shortening the time required for joining the lenses.

[0039] Note that when a cemented lens is composed of four lenses, it is possible to cement all of the lenses together by dividing the four lenses into two groups of three adjacent lenses each and cementing three lenses together in each group (see FIG. 5). Specifically, in a configuration having intermediate lens 16A positioned on the side of output-side lens 15 and intermediate lens 16B positioned on the side of input-side lens 14, for example, first, laser light L is irradiated so that focal point F is located in the light-collecting space S of intermediate lens 16A, and output-side lens 15, intermediate lens 16A, and intermediate lens 16B are cemented together. Next, laser light L is irradiated so that focal point F is located in the light-collecting space S of intermediate lens 16B, and intermediate lens 16A, intermediate lens 16B, and input-side lens 14 are cemented together. Even when a cemented lens is composed of five or more lenses, it is possible to cement the lenses together in groups of three lenses in a similar manner.

[0040] <Summary> As described above, in the vehicle lamp 1, the light-collecting recess 25 is formed in the third welding protrusion 24 of the intermediate lens 16, and the space of the light-collecting recess 25 is formed as the light-collecting space S in which the focus F of the laser light L is located during laser welding. As a result, the energy of the laser light L is highest in the light-collecting space S, so excessive energy of the laser light L is less likely to be concentrated in the lens, and it is possible to prevent cracks from occurring in the lens due to laser welding.

[0041] Furthermore, the light-collecting recess 25 is open in the protruding direction of the third welding protrusion 24. This makes it possible to use the entire surfaces of the third welding protrusion 24 in the optical axis direction as bonding surfaces (welding surfaces). This makes it easy to ensure a large bonding area, and makes it easy to ensure high bonding strength of the lens.

[0042] Furthermore, the plurality of light-collecting recesses 25 are positioned at intervals in the circumferential direction of the third light-transmitting portion 23. This allows the lenses to be bonded at a plurality of locations in the circumferential direction, thereby ensuring high bonding strength between the plurality of lenses and sufficient strength for the entire lens bonded body 10.

[0043] <Other> Other configurations of the lens holder and the intermediate lens will be described below (see FIGS. 6 to 11).

[0044] The above example shows the lens assembly 10 attached to the inner surface of the lens holder 9 by adhesive or the like, but in the vehicle lamp 1, instead of the lens holder 9, a lens holder 9A provided with a holding protrusion 28 that fits onto the lens assembly 10 may be used (see Figure 6).

[0045] The lens holder 9A has a frame-shaped portion 11 and a cylindrical portion 12A, and the cylindrical portion 12A is provided with a holding protrusion 28 that protrudes inward. The lens assembly 10 is held by the lens holder 9A by fitting the holding protrusion 28 into the light-collecting recess 25.

[0046] In this way, the lens holder 9A is provided with the holding protrusions 28, and the lens assembly 10 is held by the lens holder 9A by fitting the holding protrusions 28 into the light-collecting recesses 25. This improves the positioning accuracy of the lens assembly 10 and the lens holder 9A.

[0047] Furthermore, even when the lens joined body 10 and the lens holder 9A are joined by, for example, laser welding, the joining can be performed while the lens joined body 10 is held by the lens holder 9A, thereby improving workability. In addition, by using the lens holder 9A as a holding jig 100 during laser welding of the lenses, it is possible to reduce manufacturing costs. When the lens holder 9A is used as the holding jig 100, the lens holder 9A is provided with a portion that holds the incident-side lens 14 from the rear side.

[0048] Although the above example shows the light-collecting recesses being open only in the protruding direction of the welding protrusion, the opening direction of the light-collecting recesses is not limited to this. For example, instead of the intermediate lens 16, an intermediate lens 16C may be used in which light-collecting recesses 29, 30 are formed that are open in the protruding direction of the third welding protrusion 24 and in the front or rear (optical axis direction) directions (see FIGS. 7 and 8).

[0049] The intermediate lens 16C has a third light transmitting portion 23 and an annular third welding protrusion 24C protruding from the outer periphery of the third light transmitting portion 23 in a direction perpendicular to the optical axis. The third welding protrusion 24C is formed with a plurality of light collecting recesses 29 that open in the protruding direction and forward, and a plurality of light collecting recesses 30 that open in the protruding direction and forward (see FIG. 7). The light collecting recesses 29 and the light collecting recesses 30 are formed to be spaced apart from each other in the circumferential direction and are positioned alternately in the circumferential direction (see FIG. 8). In the intermediate lens 16C, a rear portion of the light collecting recess 29 on the rear surface of the third welding protrusion 24C forms a third bonding portion 26, and a front portion of the light collecting recess 30 forms a fourth bonding portion 27.

[0050] When the intermediate lens 16C is used as the lens constituting the cemented lens assembly 10, the cementing of the output-side lens 15 and the intermediate lens 16C and the cementing of the input-side lens 14 and the intermediate lens 16C are performed separately. For example, first, laser light L is applied so that the focal point F is located in the light-collecting space S of the light-collecting recess 29, thereby melting the first cemented portion 19 and the third cemented portion 26 and cementing the output-side lens 15 and the intermediate lens 16C. Next, laser light L is applied so that the focal point F is located in the light-collecting space S of the light-collecting recess 30, thereby melting the second cemented portion 22 and the fourth cemented portion 27 and cementing the input-side lens 14 and the intermediate lens 16C. Note that it is also possible to simultaneously weld all of the lenses by simultaneously irradiating the light-collecting recess 29 and the light-collecting recess 30 with separate laser light L.

[0051] By forming the light-collecting recesses 29, 30 as described above, a lens portion is present on one side of the light-collecting recesses 29, 30 in the optical axis direction in the third welding protrusion 24C, which makes it possible to increase the thickness of the lens portion and ensure high strength of the third welding protrusion 24C. Furthermore, when molding the intermediate lens 16C using a mold that releases in the thickness direction of the lens (optical axis direction), it becomes possible to form the light-collecting recesses 29, 30 using only a cavity and a core, which makes it possible to mold the lens without complicating the mold configuration and improves manufacturability.

[0052] It is also possible to configure the light-collecting recesses 29, 30 so that they are open only to the front or only to the rear (see FIG. 9). By configuring the light-collecting recesses 29, 30 so that they are open only to the front or only to the rear, the second welding protrusion 21 and the first welding protrusion 18 are reinforced by the lens portions present on the outer peripheries of the light-collecting recesses 29, 30, and therefore it is possible to ensure a higher strength of the lens cemented body 10.

[0053] Moreover, instead of the intermediate lens 16, an intermediate lens 16D provided with a plurality of third welding projections 24D may be used (see FIGS. 10 and 11).

[0054] The intermediate lens 16D has a third light-transmitting portion 23 and a plurality of third welding protrusions 24D protruding from the outer periphery of the third light-transmitting portion 23 in a direction perpendicular to the optical axis (see FIG. 10 ). The plurality of third welding protrusions 24D are spaced apart in the circumferential direction. The third welding protrusion 24D has a through-hole 31 that opens on both sides in the circumferential direction (see FIGS. 10 and 11 ). In the intermediate lens 16D, the through-hole 31 functions as a light-collecting recess (light-collecting space). When the intermediate lens 16D is used as a lens constituting the lens cemented body 10, the focus F of the laser light L is positioned at the through-hole 31, and three lenses are cemented together simultaneously, as in the case of using the intermediate lens 16. The intermediate lens 16D configured as described above reduces the amount of resin material required to form the lenses, thereby reducing the weight of the lens cemented body 10.

[0055] Furthermore, as described above, the cemented lens structure 10 is made of a transparent resin material such as acrylic or polycarbonate. In the cemented lens structure 10, all of the lenses are made of the same resin material, which results in the same melting temperature for all of the lenses. This reduces variations in the melting state of the lenses during laser welding, ensuring a stable cemented state of the lenses. Generally, acrylic has higher transparency than polycarbonate, which in turn has a higher melting temperature than acrylic. Therefore, by making all of the lenses in the cemented lens structure 10 out of acrylic, the cemented lens structure 10 can ensure high beam efficiency. Conversely, by making all of the lenses out of polycarbonate, the cemented lens structure 10 can ensure high heat resistance.

[0056] However, the lenses of the lens cemented assembly 10 may be made of different resin materials. For example, the exit lens 15 and the intermediate lens 16 may be made of polycarbonate, and the entrance lens 14 may be made of acrylic.

[0057] In the case of the cemented lens structure 10 made up of three lenses, if all of the lenses are welded simultaneously, there is a possibility that energy loss occurs in the laser light L as it passes through the lenses, and the energy imparted to the third cemented part 26 may become smaller than the energy imparted to the fourth cemented part 27. In such a case, by forming the incident-side lens 14 from acrylic, which has a low melting temperature and is easily melted with small energy, it is possible to ensure high heat resistance of the cemented lens structure 10 as a whole and also to ensure a good cemented state of the lenses.

[0058] Alternatively, the lens cemented assembly 10 may be configured such that the exit-side lens 15 and the intermediate lens 16 are made of acrylic, and the entrance-side lens 14 is made of polycarbonate. In this configuration, the entrance-side lens 14, into which light from the light source 8 is incident, is made of polycarbonate, which has a high melting temperature, so that the influence of heat from the light source on the lens cemented assembly 10 can be reduced. Furthermore, energy loss of the laser light L in the exit-side lens 15 and the intermediate lens 16 is suppressed, and the energy imparted to the third cemented part 26 is less likely to be reduced, so that a good welding state of the lenses can be ensured. [Explanation of symbols]

[0059] 1 Vehicle lighting fixtures 6 Drawing lamp unit 8 light source 9 Lens holder 10 Lens cemented body 14 Incident lens 15 Exit lens 16 Intermediate Lens 17 First light transmitting portion 18 First welding projection 20 Second light transmitting section 21 Second welding projection 23 Third light transmitting section 24 Third welding protrusion 25 Light-collecting recess 16A Intermediate Lens 16B intermediate lens 9A Lens Holder 28 Holding protrusion 16C intermediate lens 24C Third welding protrusion 29 Light-collecting recess 30 Light-collecting recess 16C intermediate lens 24C Third welding protrusion 31 Through hole (light-collecting recess) S Concentration space L laser light F focus

Claims

1. a light source that emits light; a lens cemented body having at least three lenses arranged in the optical axis direction, and adjacent lenses cemented together by laser welding; the lens has a light-transmitting portion through which light emitted from the light source is transmitted, and a welding protrusion that protrudes from an outer periphery of the light-transmitting portion in a direction perpendicular to the optical axis direction and is laser-welded, the lens positioned at the middle in the joining direction is provided as an intermediate lens, a light-collecting recess portion that opens in a predetermined direction is formed in the welding protrusion portion of the intermediate lens; The space of the light-collecting recess is formed as a light-collecting space where the focus of the laser light is positioned during laser welding. Vehicle lighting fixtures.

2. The light collecting recess is open in the protruding direction of the welding protrusion.

2. A vehicle lamp according to claim 1.

3. One intermediate lens is provided.

3. A vehicle lamp according to claim 2.

4. a lens holder for holding the lens assembly is provided; The lens holder is provided with a holding protrusion that holds the lens assembly by fitting into the light-collecting recess.

4. A vehicle lamp according to claim 1, claim 2 or claim 3.

5. A plurality of the light-collecting recesses are formed, The plurality of light-collecting recesses are spaced apart from one another in the circumferential direction of the light-transmitting portion.

4. A vehicle lamp according to claim 1, claim 2 or claim 3.

Images