Vehicle lighting

Abstract

The projection lens (4) comprises: a first lens body (9), which includes a first incident portion (7) located at a position opposite to the first light source (2) and an exit portion (8) located on the side opposite to the first incident portion (7); and a second lens body (11), which includes a second incident portion (10) located at a position opposite to the second light source (3) and a third incident portion (13) located between the first incident portion (7) and the second incident portion (10). The mirror body (11) has a structure in which a first boundary surface (T1) and a second boundary surface (T2) are connected to each other. The first boundary surface (T1) is arranged between the exit portion (8) and the third incident portion (13). The second boundary surface (T2) is arranged in the entire range between the first incident portion (7) and the third incident portion (13) from the boundary line (S) with the first boundary surface (T1). In addition, the first boundary surface (T1) and the second boundary surface (T2) are configured to form an acute angle with respect to the boundary line (S).

Description

Technical Field

[0001] The present invention relates to a vehicle lamp.

[0002] This application claims priority based on Japanese Patent Application No. 2020-194027, filed on November 24, 2020, and cites its contents herein. Background Art

[0003] For example, a vehicle lamp such as a vehicle headlamp includes: a light source; a reflector that reflects light emitted from the light source toward the direction of travel of the vehicle; a sunshade that blocks (cuts off) a portion of the light reflected by the reflector; and a projection lens that projects the light partially blocked by the sunshade toward the direction of travel of the vehicle.

[0004] In such a vehicle lamp, a light source image defined by the front end of the shade is inverted and projected by a projection lens as an oncoming beam (low beam), thereby forming a low beam light distribution pattern including a cutoff line at the upper end.

[0005] In addition, in the vehicle lamp, another light source that emits light in the direction of travel of the vehicle is arranged below the sun visor as a driving beam (high beam). The light emitted by this light source is projected by a projection lens to form a high beam distribution pattern above the low beam distribution pattern.

[0006] Furthermore, the vehicle lamp described in Patent Document 1 below proposes forming a low-beam light distribution pattern and a high-beam light distribution pattern using two light guide members provided corresponding to two upper and lower light sources, instead of the reflector and shade described above.

[0007] Prior art literature

[0008] Patent Literature

[0009] Patent Document 1: International Publication No. 2018 / 043663 Summary of the Invention

[0010] Problems to be solved by the invention

[0011] However, in the vehicle lamp described in Patent Document 1, an air layer (air gap) exists between the two light guide components, and the light from the first light guide lens is totally reflected by the total reflection surface to form the oncoming light beam. Therefore, although light is not irradiated into the high-beam light distribution area, it is difficult to form the overhead light distribution pattern in the high-beam light distribution area required for the oncoming light beam.

[0012] An aspect of the present invention provides a vehicle lamp capable of obtaining a good light distribution pattern and forming a light distribution pattern for overhead installation.

[0013] Means for solving problems

[0014] In order to achieve the above-mentioned object, the present invention provides the following structure.

[0015] [1] A vehicle lamp, characterized by comprising:

[0016] a first light source emitting first light;

[0017] a second light source disposed adjacent to the first light source and emitting second light in the same direction as the first light; and

[0018] a projection lens that projects the first light and the second light in the same direction,

[0019] The projection lens comprises: a first lens body including a first incident portion located at a position opposite to the first light source and an exit portion located on a side opposite to the first incident portion; and a second lens body including a second incident portion located at a position opposite to the second light source and a third incident portion located between the first incident portion and the second incident portion.

[0020] The vehicle lamp has the following structure: the first lens body and the second lens body are butted against each other in a state where a first boundary surface and a second boundary surface are sandwiched between the first lens body and the second lens body, wherein the first boundary surface is a boundary surface between the first lens body and the second lens body provided between the emission portion and the third incidence portion, and the second boundary surface is a boundary surface between the first lens body and the second lens body provided over the entire range between the first incidence portion and the third incidence portion 13 from a boundary line with the first boundary surface.

[0021] Furthermore, the first boundary surface and the second boundary surface are arranged to form an acute angle with respect to the boundary line.

[0022] Among the first light incident on the interior of the first lens body from the first incident portion, the first light reflected on the second boundary surface is emitted from the emission portion to the outside of the first lens body.

[0023] Of the second light incident on the interior of the second lens body from the second incident portion, the second light transmitted through the first boundary surface and the second light transmitted through the second boundary surface are emitted from the emission portion to the outside of the first lens body.

[0024] Of the first light incident on the interior of the second lens body from the third incident portion, the first light transmitted through the first boundary surface is emitted from the emission portion to the outside of the first lens body.

[0025] [2] The vehicle lamp according to [1] above, characterized in that:

[0026] The refractive index of the second lens body is smaller than the refractive index of the first lens body.

[0027] [3] The vehicle lamp according to [2] above, characterized in that:

[0028] The vehicle lamp has a structure in which the first lens body and the second lens body are butted against each other via an intermediate layer.

[0029] The refractive index of the second lens body is lower than the refractive index of the intermediate layer.

[0030] [4] The vehicle lamp according to any one of [1] to [3] above, characterized in that:

[0031] The emission portion includes a lens surface that converges the first light and the second light in a direction in which the boundary line extends and in a direction in which the first light source and the second light source are arranged.

[0032] [5] The vehicle lamp according to any one of [1] to [3] above, characterized in that:

[0033] The projection lens has a third lens body located on a side opposite to the emission portion.

[0034] The emission portion includes a lens surface that converges the first light and the second light in a direction in which the boundary line extends.

[0035] The third lens body has a lens surface that converges the first light and the second light emitted from the emission portion in a direction in which the first light source and the second light source are arranged.

[0036] [6] The vehicle lamp according to [5] above, characterized in that:

[0037] The third lens body is integrated with the first lens body with an air layer provided between the third lens body and the emission portion.

[0038] [7] The vehicle lamp according to any one of [1] to [6] above, characterized in that:

[0039] The first light source and the second light source are provided on the same surface of the same substrate.

[0040] [8] The vehicle lamp according to any one of [1] to [7] above, characterized in that:

[0041] The first light incident from the first incident portion and projected by the projection lens forms a first light distribution pattern including a cutoff line defined by the boundary line at an upper end.

[0042] The second light incident from the second incident portion and projected by the projection lens forms a second light distribution pattern, and the second light distribution pattern is located above the first light distribution pattern.

[0043] The first light incident from the third incident portion and projected by the projection lens forms a third light distribution pattern, and the third light distribution pattern is located above the cutoff line.

[0044] Effects of the Invention

[0045] According to the aspects of the present invention, it is possible to provide a vehicle lamp that can obtain a good light distribution pattern and form a light distribution pattern for overhead installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a perspective view showing the structure of a vehicle lamp according to a first embodiment of the present invention.

[0047] Figure 2 It shows Figure 1 An exploded perspective view of the structure of the vehicle lamp shown.

[0048] Figure 3 It shows Figure 1 A vertical cross-sectional view of the structure of the vehicle lamp shown.

[0049] Figure 4 It shows Figure 1 FIG. 2 is a horizontal cross-sectional view of the structure of the vehicle lamp on the first incident portion side.

[0050] Figure 5 It shows Figure 1 A horizontal cross-sectional view of the structure of the vehicle lamp on the second incident portion side is shown.

[0051] Figure 6 It shows Figure 1 A horizontal cross-sectional view of the structure of the vehicle lamp on the third incident portion side is shown.

[0052] Figure 7 It is a perspective view showing the structure of a vehicle lamp according to a second embodiment of the present invention.

[0053] Figure 8 It shows Figure 7 An exploded perspective view of the structure of the vehicle lamp shown.

[0054] Figure 9 It shows Figure 7A vertical cross-sectional view of the structure of the vehicle lamp shown.

[0055] Figure 10 It shows Figure 7 A horizontal cross-sectional view of the structure of the vehicle lamp on the first incident portion side is shown.

[0056] Figure 11 It shows Figure 7 FIG. 2 is a horizontal cross-sectional view of the structure of the vehicle lamp on the second incident portion side.

[0057] Figure 12 It shows Figure 7 A horizontal cross-sectional view of the structure of the vehicle lamp on the third incident portion side is shown.

[0058] Figure 13 It is a vertical cross-sectional view showing the structure of a vehicle lamp according to a third embodiment of the present invention.

[0059] Figure 14 It shows Figure 13 A horizontal cross-sectional view of the structure of the vehicle lamp on the third incident portion side is shown.

[0060] Figure 15 Schematic diagram showing a low-beam light distribution pattern, a high-beam light distribution pattern, and an overhead light distribution pattern formed by the first light and the second light. DETAILED DESCRIPTION

[0061] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0062] In the drawings used in the following description, components may be shown with their dimensions altered to facilitate visualization, and the dimensional ratios of the components are not necessarily the same as the actual ones.

[0063] In addition, in the figures shown below, an XYZ orthogonal coordinate system is set, the X-axis direction is represented as the front-to-back direction (length direction) of the vehicle lamp, the Y-axis direction is represented as the left-right direction (width direction) of the vehicle lamp, and the Z-axis direction is represented as the up-down direction (height direction) of the vehicle lamp.

[0064] (First embodiment)

[0065] First, as a first embodiment of the present invention, for example Figures 1 to 6 The vehicle lamp 1A shown will be described.

[0066] also, Figure 1 It is a perspective view showing the structure of the vehicle lamp 1A. Figure 2 It is an exploded perspective view showing the structure of the vehicle lamp 1A. Figure 3It is a vertical cross-sectional view showing the structure of the vehicle lamp 1A. Figure 4 It is a horizontal cross-sectional view showing the structure of the vehicle lamp 1A on the first incident portion 7 side. Figure 5 It is a horizontal cross-sectional view showing the structure of the vehicle lamp 1A on the second incident portion 10 side. Figure 6 It is a horizontal cross-sectional view showing the structure of the vehicle lamp 1 on the third incident portion 13 side.

[0067] The vehicle lamp 1A of this embodiment applies the present invention to a vehicle headlamp, and irradiates a meeting beam (low beam) having a low beam distribution pattern including a cut-off line at the upper end and a running beam (high beam) having a high beam distribution pattern formed on the upper side of the low beam distribution pattern toward the front of the vehicle (+X axis direction) in a manner that can be freely switched.

[0068] Specifically, if Figures 1 to 6 As shown, the vehicle lamp 1A generally includes a first light source 2 emitting a first light L1 , a second light source 3 emitting a second light L2 , and a projection lens 4 projecting the first light L1 and the second light L2 inside a lamp body (not shown).

[0069] In addition, the lamp body is composed of a housing with an opening on the front and a transparent lens cover covering the opening of the housing. In addition, the shape of the lamp body can be appropriately changed according to the design of the vehicle, etc.

[0070] The first light source 2 and the second light source 3 are composed of, for example, light-emitting diodes (LEDs) that emit white light. Furthermore, high-output (high-brightness) LEDs for vehicle lighting (e.g., SMD LEDs) can be used as the LEDs. Furthermore, in addition to the aforementioned LEDs, light-emitting elements such as laser diodes (LDs) can also be used for the first light source 2 and the second light source 3.

[0071] In the vehicle lamp 1A of this embodiment, a first light source 2 and a second light source 3 are arranged adjacent to each other in the vertical direction (up and down direction) of the vehicle lamp 1A. The first light source 2 includes a single LED positioned at the top, while the second light source 3 includes a single LED positioned at the bottom.

[0072] The first light source 2 and the second light source 3 are mounted on one side (the front side in this embodiment) of a circuit board 5, which is provided with a drive circuit for driving each LED. As a result, the first light source 2 and the second light source 3 radially emit the first light L1 and the second light L2 toward the front (+X axis). In other words, the first light source 2 and the second light source 3 are arranged on the same surface of the same circuit board 5 and are configured to radially emit the first light L1 and the second light L2 toward the same direction.

[0073] Furthermore, a heat sink 6 is mounted on the other side (the back side in this embodiment) of the circuit board 5 to dissipate heat generated by the first light source 2 and the second light source 3. The heat sink 6 is formed of an extruded body made of a metal with high thermal conductivity, such as aluminum. The heat sink 6 includes a base portion 6a that contacts the circuit board 5 and a plurality of fin portions 6b that improve the heat dissipation of heat transferred from the circuit board 5 to the base portion 6a.

[0074] In addition, in this embodiment, the LEDs constituting the above-mentioned first light source 2 and second light source 3 and the driving circuit for driving the LEDs are mounted on the circuit board 5, but it can also be constructed as follows: a mounting substrate on which the LEDs are mounted and a circuit board on which the driving circuit for driving the LEDs is provided are separately arranged, and the mounting substrate and the circuit board are electrically connected by a wiring harness called a wiring harness to protect the driving circuit from the heat emitted by the LEDs.

[0075] The projection lens 4 includes: a first lens body 9, which includes a first incident portion 7 located at a position opposite to the first light source 2 and an exit portion 8 located on the side opposite to the first incident portion 7; and a second lens body 11, which includes a second incident portion 10 located at a position opposite to the second light source 3 and a third incident portion 13 located between the first incident portion 7 and the second incident portion 10.

[0076] In the projection lens 4, the refractive index of the second lens body 11 is smaller than that of the first lens body 9. In this embodiment, for example, the first lens body 9 is made of polycarbonate resin (PC) and the second lens body 11 is made of acrylic resin (PMMA).

[0077] The combination of materials having different refractive indices for the first lens body 9 and the second lens body 11 is not necessarily limited to this combination and can be modified as appropriate.

[0078] The projection lens 4 has the following structure: when the first boundary surface T1 and the second boundary surface T2 are clamped between the first lens body 9 and the second lens body 11, the first lens body 9 and the second lens body 11 are connected to each other via the intermediate layer M, wherein the first boundary surface T1 is a boundary surface between the first lens body 9 and the second lens body 11 arranged between the exit part 8 and the third incident part 13, and the second boundary surface T2 is a boundary surface between the first lens body 9 and the second lens body 11 arranged from the boundary line S with the first boundary surface T1 in the entire range between the first incident part 7 and the third incident part 13.

[0079] The intermediate layer M is made of a light-transmitting adhesive material that joins the first lens body 9 and the second lens body 11. The intermediate layer M may have a thickness sufficient to join the first lens body 9 and the second lens body 11.

[0080] In the projection lens 4, the refractive index of the intermediate layer M is lower than that of the first lens body 9. Furthermore, the refractive index of the second lens body 11 is lower than that of the intermediate layer M. In other words, the refractive index of the second lens body 11 is the same as that of the intermediate layer M, or the refractive index of the intermediate layer M is higher than that of the second lens body 11.

[0081] On the other hand, when increasing the difference in refractive index (critical angle) between the first lens body 9 and the intermediate layer M, it is preferable to use an intermediate layer M having a refractive index close to that of the second lens body 11. The intermediate layer M can be made of an adhesive material that satisfies these conditions and is appropriately selected from known adhesive materials.

[0082] The first boundary surface T1 is formed by a surface that divides the first lens body 9 and the second lens body 11 downward from the boundary line S, and the first boundary surface T1 is inclined obliquely backward from the boundary line S. The second boundary surface T2 is formed by a surface that divides the first lens body 9 and the second lens body 11 backward from the boundary line S, and the second boundary surface T2 is inclined obliquely upward from the boundary line S.

[0083] Therefore, the first boundary surface T1 and the second boundary surface T2 are arranged to form an acute angle with respect to the boundary line S. The boundary line S extends in the horizontal direction (left-right direction) of the vehicle lamp 1A and defines the cutoff line of the low-beam light distribution pattern.

[0084] By butting the first boundary surface T1 and the second boundary surface T2 of the first lens body 9 and the second lens body 11 against each other via the intermediate layer M, the first boundary surface T1 and the second boundary surface T2 are bonded via the intermediate layer M as an adhesive material without interposing an air layer therebetween.

[0085] The first lens body 9 has a pair of arms 9a and 9b extending rearward from the upper and lower sides of the first lens body 9. The front ends of the arms 9a and 9b are bent away from each other.

[0086] In the projection lens 4, a pair of arms 9a and 9b are fixed to a fixed position such as a bracket within the lamp body by screw fastening together with the circuit board 5. As a result, the first lens body 9 and the second lens body 11 are positioned and fixed relative to the first light source 2 and the second light source 3, while maintaining the spacing between the first light source 2 and the second light source 3 and the first incident portion 7 and the second incident portion 10.

[0087] The first incident portion 7 includes: a convex first focusing incident surface 7a, which is located at a portion opposite to the first light source 2, and is provided with a portion of the first light L1 emitted from the first light source 2 for incident; a roughly cylindrical second focusing incident surface 7b, which is located on the inner peripheral side of a portion protruding toward the first light source 2 from a position surrounding the first focusing incident surface 7a, and is provided with a portion of the first light L1 emitted from the first light source 2 for incident; and a truncated conical focusing reflecting surface 7c, which is located on the outer peripheral side of the protruding portion, and reflects the first light L1 incident from the second focusing incident surface 7b.

[0088] The first incident portion 7 is adjacent to the third incident portion 13 across the first boundary surface T1 and has a shape in which a portion of the lower side of the first light-collecting incident surface 7a, the second light-collecting incident surface 7b, and the light-collecting reflecting surface 7c is cut away along the second boundary surface T2.

[0089] In the first incident portion 7, the first light L1 incident on the first lens body 9 from the first light-collecting incident surface 7a, out of the first light L1 radially emitted from the first light source 2, is converged so as to be close to the optical axis. On the other hand, the first light L1 incident on the first lens body 9 from the second light-collecting incident surface 7b is reflected by the light-collecting reflecting surface 7c and is thereby converged so as to be close to the optical axis.

[0090] Therefore, in Figure 3 In the vertical cross-section of the vehicle lamp 1A shown, the first light L1 incident from the first incident portion 7 to the interior of the first lens body 9 is converged in a manner close to the optical axis AX2 while being guided toward the front of the first lens body 9, wherein the optical axis AX2 is an optical axis inclined obliquely downward relative to the optical axis AX1 of the first light L1 emitted from the first light source 2.

[0091] On the other hand, Figure 4 In the horizontal cross-section of the vehicle lamp 1A shown, the first light L1 incident from the first incident portion 7 into the interior of the first lens body 9 is guided toward the front of the first lens body 9 while being parallelized with respect to the optical axis AX1 of the first light L1. Alternatively, the first incident portion 7 may be configured such that, in the horizontal cross-section of the vehicle lamp 1A, the first light L1 is converged so as to approach the optical axis AX1 while being incident into the interior of the first lens body 9.

[0092] The first light L1 incident on the first lens body 9 from the first incident portion 7 is guided toward the emission portion 8 located in front of the first lens body 9. The first light L1 incident on the second boundary surface T2 is reflected by the second boundary surface T2 and then guided toward the emission portion 8.

[0093] That is, at the second boundary surface T2 , since the refractive index of the intermediate layer M is lower than the refractive index of the first lens body 9 , the first light L1 incident on the second boundary surface T2 can be totally reflected toward the emission portion 8 .

[0094] The second incident portion 10 includes: a convex first light-focusing incident surface 10a, which is located at a portion opposite to the second light source 3, and is provided with a portion of the second light L2 emitted from the second light source 3 for incident; a roughly cylindrical second light-focusing incident surface 10b, which is located on the inner peripheral side of a portion protruding toward the second light source 3 from a position surrounding the first light-focusing incident surface 10a, and is provided with a portion of the second light L2 emitted from the second light source 3 for incident; and a truncated conical light-focusing reflecting surface 10c, which is located on the outer peripheral side of the protruding portion, and reflects the second light L2 incident from the second light-focusing incident surface 10b.

[0095] In the second incident portion 10, the second light L2 incident on the first light-collecting incident surface 10a of the second light L2 emitted radially from the second light source 3 and entering the interior of the second lens body 11 is converged so as to approach the optical axis. On the other hand, the second light L2 incident on the second light-collecting incident surface 10b and entering the interior of the second lens body 11 is reflected by the light-collecting reflecting surface 10c and converged so as to approach the optical axis.

[0096] Therefore, in Figure 3 In the vertical cross-section of the vehicle lamp 1A shown, the second light L2 incident from the second incident portion 10 into the interior of the second lens body 11 is converged in a manner close to the optical axis AX4 while being guided toward the front of the second lens body 11, wherein the optical axis AX4 is an optical axis inclined obliquely upward relative to the optical axis AX3 of the second light L2 emitted from the second light source 3.

[0097] On the other hand, Figure 5 In the horizontal cross-section of the vehicle lamp 1A shown, the second light L2 incident from the second incident portion 10 into the interior of the second lens body 11 is guided toward the front of the second lens body 11 while being parallelized with respect to the optical axis AX3 of the second light L2. Alternatively, the second incident portion 10 may be configured such that, in the horizontal cross-section of the vehicle lamp 1A, the second light L2 is converged so as to approach the optical axis AX3 while being incident into the interior of the second lens body 11.

[0098] Furthermore, the second light L2 incident on the interior of the second lens body 11 from the second incident portion 10 passes through the first boundary surface T1 and the second boundary surface T2 located in front of the second lens body 11 and enters the interior of the first lens body 9. The second light L2 incident on the interior of the first lens body 9 is guided toward the emission portion 8.

[0099] That is, in the first boundary surface T1 and the second boundary surface T2, since the refractive index of the intermediate layer M and the second lens body 11 is smaller than the refractive index of the first lens body 9, the second light L2 incident on the first boundary surface T1 and the second boundary surface T2 can be transmitted toward the emission portion 8.

[0100] Furthermore, at the second boundary surface T2, since the refractive index of the intermediate layer M and the second lens body 11 is lower than the refractive index of the first lens body 9, the second light L2 incident on the second boundary surface T2 can be refracted downward while being transmitted toward the front exit portion 8. Consequently, the height dimension of the projection lens 4 can be kept low, thereby achieving an overall thinning.

[0101] The third incident portion 13 is located above the light-collecting and reflecting surface 10 c and has a concave diffusion incident surface 13 a on which a portion of the first light L1 emitted from the first light source 2 is incident.

[0102] In the third incident portion 13, the first light L13 of the first light L1 radially emitted from the first light source 2 that is incident from the diffusion incident surface 13a into the interior of the second lens body 11 is diffused, wherein the diffusion incident surface 13a is located below the portion opposite to the first light source 2.

[0103] Therefore, in Figure 3 In the vertical cross section of the illustrated vehicle lamp 1A, the first light L13 incident on the second lens body 11 from the third incident portion 13 is guided forward of the second lens body 11 while diffusing toward the vicinity of the boundary line S.

[0104] On the other hand, Figure 6 In the horizontal cross section of the illustrated vehicle lamp 1A, the first light L13 incident from the third incident portion 13 into the interior of the second lens body 11 is guided while diffusing toward the front of the second lens body 11 .

[0105] The first light L13 incident on the second lens body 11 from the third incident portion 13 passes through the first boundary surface T1 located in front of the second lens body 11 and enters the first lens body 9. The first light L13 incident on the first lens body 9 is guided toward the emission portion 8.

[0106] That is, in the first boundary surface T1, since the refractive index of the intermediate layer M and the second lens body 11 is smaller than the refractive index of the first lens body 9, the first light L13 incident on the first boundary surface T1 can be refracted upward while passing toward the front emission portion 8.

[0107] The emitting portion 8 has an emitting surface 8a on the front side of the first lens body 9. The emitting surface 8a is composed of a spherical or aspherical convex lens surface that converges the first light L1 and the second light L2 in the vertical direction (the direction in which the first light source 2 and the second light source 3 are arranged) and the horizontal direction (the direction in which the boundary line S extends) of the vehicle lamp 1A. The focal point of the convex lens surface is set at or near the boundary line S.

[0108] In the emission section 8, the first light L1 and the second light L2 guided inside the first lens body 9 are converged by the emission surface 8a and emitted to the outside of the first lens body 9. In addition, in the emission section 8, the first light L1 and the second light L2 emitted from the emission surface 8a are converged and then diffused in the horizontal and vertical directions of the vehicle lamp 1A, thereby magnifying and projecting the first light L1 and the second light L2 toward the front of the first lens body 9 (projection lens 4).

[0109] In addition, other surfaces that are omitted from illustration and description among the surfaces constituting the first lens body 9 and the second lens body 11 can be freely designed (for example, shielding, etc.) within a range that does not adversely affect the first light L1 and the second light L2 passing through the interior of the first lens body 9 and the second lens body 11.

[0110] In the vehicle lamp 1A of this embodiment having the above-described structure, the first light L1 emitted by the first light source 2 is projected toward the vehicle's traveling direction as an oncoming beam (low beam) by the projection lens 4. At this time, the first light L1 projected forward of the projection lens 4 inverts the light source image formed near the focal point of the exit surface 8a, forming a low-beam light distribution pattern (first light distribution pattern) that includes a cutoff line defined by the boundary line S at its upper end.

[0111] On the other hand, in the vehicle lamp 1A of this embodiment, the first light L1 and second light L2 emitted by the first light source 2 and the second light source 3 are projected by the projection lens 4 toward the vehicle's travel direction as a running beam (high beam). At this time, the second light L projected forward of the projection lens 4 forms a second light distribution pattern positioned above the low-beam light distribution pattern (first light distribution pattern). This second light distribution pattern is superimposed on the low-beam light distribution pattern (second light distribution pattern) formed by the first light L1 to form a high-beam light distribution pattern.

[0112] In the vehicle lamp 1A of the present embodiment, the first light L1 emitted from the first light source 2 is incident from the first incident portion 7 to the interior of the first lens 9. Figure 3In the vertical cross-section of the vehicle lamp 1A shown, the first light L1 incident from the first incident portion 7 into the interior of the first lens body 9 is converged in a manner close to the optical axis AX2 while being guided toward the front of the first lens body 9, wherein the optical axis AX2 is an optical axis inclined obliquely downward relative to the optical axis AX1 of the first light L1 emitted from the first light source 2.

[0113] Among them, the first light L11 guided toward the emission portion 8 is emitted from the emission portion 8 to the outside of the first lens body 9. Figure 15 The light distribution pattern shown is a light distribution pattern with the HH line positioned below in the low beam light distribution pattern LP.

[0114] On the other hand, the first light L12 incident on the second boundary surface T2 is reflected at the second boundary surface T2, guided toward the emission portion 8, and emitted from the emission portion 8 to the outside of the first lens body 9. Figure 15 The light distribution pattern shown is a light distribution pattern near the cutoff line CL in the low-beam light distribution pattern LP.

[0115] In the vehicle lamp 1A of the present embodiment, the second light L2 emitted from the second light source 3 is incident from the second incident portion 10 to the interior of the second lens 11. Figure 3 In the vertical cross-section of the vehicle lamp 1A shown, the second light L2 incident from the second incident portion 10 into the interior of the second lens body 11 is converged in a manner close to the optical axis AX4 while being guided toward the front of the second lens body 11, wherein the optical axis AX4 is an optical axis inclined obliquely upward relative to the optical axis AX3 of the second light L2 emitted from the second light source 3.

[0116] The second light L21 incident on the first boundary surface T1 passes through the first boundary surface T1, is incident on the inside of the first lens body 9, is guided toward the emission portion 8, and is emitted from the emission portion 8 to the outside of the first lens body 9. Figure 15 The light distribution pattern HP for high beam shown has the line HH positioned upward.

[0117] On the other hand, the second light L22 incident on the second boundary surface T2 passes through the second boundary surface T2, is incident on the inside of the first lens body 9, is guided toward the emission portion 8, and is emitted from the emission portion 8 to the outside of the first lens body 9. Thus, the second light L22 forms Figure 15 The light distribution pattern shown is the lower light distribution pattern among the high-beam light distribution patterns HP.

[0118] In addition, the second light L22 incident on the second boundary surface T2, when passing through the second boundary surface T2, is close in position and light angle to the first light L12 reflected at the second boundary surface T2. As a result, the second light L22 is emitted to a position below the cutoff line CL of the low beam light distribution pattern LP, thereby enabling Figure 15 The lower side of the illustrated high-beam light distribution pattern HP overlaps with the cutoff line CL of the low-beam light distribution pattern LP.

[0119] In the vehicle lamp 1A of the present embodiment, a portion of the first light L1 emitted from the first light source 2 is incident from the third incident portion 13 to the interior of the second lens 11. Figure 3 In the vertical cross section of the illustrated vehicle lamp 1A, the first light L13 incident on the second lens body 11 from the third incident portion 13 is guided forward of the second lens body 11 while diffusing toward the vicinity of the boundary line S.

[0120] The first light L13 incident on the first boundary surface T1 passes through the first boundary surface T1, is incident on the inside of the first lens body 9, is guided toward the emission portion 8, and is emitted from the emission portion 8 to the outside of the first lens body 9. Figure 15 An overhead light distribution pattern (third light distribution pattern) OP for illuminating road signs and the like is formed above the cutoff line CL in the illustrated low-beam light distribution pattern LP.

[0121] As described above, in the vehicle lamp 1A of the present embodiment, by using the projection lens 4 to project the first light L1 and the second light L2 emitted from the above-mentioned first light source 2 and the second light source 3, a good low beam light distribution pattern LP, a high beam light distribution pattern HP, and an overhead light distribution pattern OP required for the low beam light distribution pattern LP can be obtained.

[0122] In addition, in the vehicle lamp 1A of this embodiment, the first boundary surface T1 and the second boundary surface T2 of the first lens body 9 and the second lens body 11 constituting the above-mentioned projection lens 4 are connected to each other via the intermediate layer M, so that there is no air layer between the first boundary surface T1 and the second boundary surface T2, but they are connected via the intermediate layer M.

[0123] Thus, in the vehicle lamp 1A of this embodiment, Fresnel loss between the first boundary surfaces T1 and the second boundary surfaces T2 can be prevented, and the utilization efficiency of the first light L1 and the second light L2 emitted from the first light source 2 and the second light source 3 can be improved.

[0124] Furthermore, in the vehicle lamp 1A of the present embodiment, by suppressing the height dimension of the projection lens 4 described above, it is possible to achieve overall thickness reduction.

[0125] (Second embodiment)

[0126] Next, as a second embodiment of the present invention, for example Figures 7 to 12 The vehicle lamp 1B shown will be described.

[0127] also, Figure 7 It is a perspective view showing the structure of a vehicle lamp 1B. Figure 8 It is an exploded perspective view showing the structure of the vehicle lamp 1B. Figure 9 It is a vertical cross-sectional view showing the structure of the vehicle lamp 1B. Figure 10 It is a horizontal cross-sectional view showing the structure of the vehicle lamp 1B on the first incident portion 7 side. Figure 11 It is a horizontal cross-sectional view showing the structure of the vehicle lamp 1B on the second incident portion 10 side. Figure 12 It is a horizontal cross-sectional view showing the structure of the vehicle lamp 1B on the third incident portion 13 side. In the following description, description of parts equivalent to those of the vehicle lamp 1A will be omitted, and the same reference numerals will be given in the drawings.

[0128] like Figures 7 to 12 As shown, a vehicle lamp 1B according to the present embodiment includes a third lens body 12 constituting a projection lens 4 in addition to the configuration of the vehicle lamp 1A described above.

[0129] That is, the projection lens 4 includes the first lens body 9 and the second lens body 11 described above, and further includes the third lens body 12 located on the side facing the emission portion 8 .

[0130] The third lens body 12 has an incident surface 12a on the rear side thereof on which the first light L1 and the second light L2 are incident, and an emitting surface 12b on the front side thereof from which the first light L1 and the second light L2 are emitted.

[0131] The incident surface 12 a is formed of a substantially semi-cylindrical concave lens surface whose cylindrical axis extends in the horizontal direction so as to converge the first light L1 and the second light L2 in the vertical direction of the vehicle lamp 1A.

[0132] The emission surface 12 b is formed of a substantially semi-cylindrical convex lens surface whose cylindrical axis extends in the horizontal direction so as to converge the first light L1 and the second light L2 in the vertical direction of the vehicle lamp 1A.

[0133] In the vehicle lamp 1B of this embodiment, the composite focus of the composite lens composed of the emission surface 8a of the first lens body 9 and the incident surface 12a and emission surface 12b of the third lens body 12 is set at the boundary line S or in the vicinity thereof.

[0134] In addition, the emitting portion 8 is configured to have an emitting surface 8a that converges the first light L1 and the second light L2 in the vertical direction and the horizontal direction of the above-mentioned vehicle lamp 1A, but in the case of having a third lens body 12, it can also be configured to have an emitting surface 8a that converges the first light L1 and the second light L2 only in the horizontal direction of the vehicle lamp 1A.

[0135] In this case, the emission surface 8a can be formed of a substantially semi-cylindrical convex lens surface whose cylindrical axis extends in the vertical direction so as to converge the first light L1 and the second light L2 in the horizontal direction of the vehicle lamp 1A.

[0136] In addition, regarding the third lens body 12, the incident surface 12a is not limited to be formed of a concave lens surface as described above, and the incident surface 12a may be a lens body formed of a flat surface.

[0137] The third lens body 12 is integrally assembled with the first lens body 9 with an air layer K provided between the third lens body 12 and the emission portion 8. The third lens body 12 includes a pair of arm portions 12c and 12d. The arm portions 12c and 12d extend rearward from the upper and lower sides of the third lens body 12. The distal ends of the arm portions 12c and 12d are bent away from each other.

[0138] In the projection lens 4, the first lens body 9 is sandwiched between the pair of arm portions 12c and 12d, and the pair of arm portions 12c and 12d are positioned and fixed relative to the first lens body 9. Thus, the first lens body 9 and the third lens body 12 are integrated with each other, with an air layer K provided between the incident surface 12a and the exit surface 8a.

[0139] In addition, other surfaces constituting the third lens body 12 , whose illustration and description are omitted, can be freely designed (for example, shielding) within a range that does not adversely affect the first light L1 and the second light L2 passing through the interior of the third lens body 12 .

[0140] In the vehicle lamp 1B of this embodiment having the above-described structure, the first light L1 emitted by the first light source 2 is projected toward the vehicle's traveling direction as an oncoming beam (low beam) by the projection lens 4. At this time, the first light L1 projected forward of the projection lens 4 inverts the light source image formed near the focal point of the aforementioned synthesizing lens, forming a low-beam light distribution pattern (first light distribution pattern) having a cutoff line defined by the boundary line S at its upper end.

[0141] On the other hand, in the vehicle lamp 1B of this embodiment, the first light L1 and second light L2 emitted by the first light source 2 and the second light source 3 are projected by the projection lens 4 toward the vehicle's travel direction as a running beam (high beam). At this time, the second light L projected forward of the projection lens 4 forms a second light distribution pattern positioned above the low-beam light distribution pattern (first light distribution pattern). This second light distribution pattern is superimposed on the low-beam light distribution pattern (second light distribution pattern) formed by the first light L1 to form a high-beam light distribution pattern.

[0142] In the vehicle lamp 1B of the present embodiment, the first light L1 emitted from the first light source 2 is incident from the first incident portion 7 to the interior of the first lens 9. Figure 9 In the vertical cross-section of the vehicle lamp 1B shown, the first light L1 incident from the first incident portion 7 into the interior of the first lens body 9 is converged in a manner close to the optical axis AX2 while being guided toward the front of the first lens body 9, wherein the optical axis AX2 is an optical axis inclined obliquely downward relative to the optical axis AX1 of the first light L1 emitted from the first light source 2.

[0143] The first light L11 guided toward the emission portion 8 is emitted from the emission portion 8 to the outside of the first lens body 9. The first light L11 emitted to the outside of the first lens body 9 is incident on the inside of the third lens body 12 from the incident surface 12a via the air layer K, and is emitted from the emission surface 12b to the outside of the third lens body 12. As a result, the first light L11 forms a Figure 15 The light distribution pattern shown is a light distribution pattern with the HH line positioned below in the low beam light distribution pattern LP.

[0144] On the other hand, the first light L12 incident on the second boundary surface T2 is reflected at the second boundary surface T2, guided toward the emission portion 8, and emitted from the emission portion 8 to the outside of the first lens body 9. Furthermore, the first light L12 emitted to the outside of the first lens body 9 is incident from the incident surface 12a to the inside of the third lens body 12 through the air layer K, and is emitted from the emission surface 12b to the outside of the third lens body 12. Thus, the first light L12 forms Figure 15 The light distribution pattern shown is a light distribution pattern near the cutoff line CL in the low-beam light distribution pattern LP.

[0145] In the vehicle lamp 1B of the present embodiment, the second light L2 emitted from the second light source 3 is incident from the second incident portion 10 to the interior of the second lens 11. Figure 9In the vertical cross-section of the vehicle lamp 1A shown, the second light L2 incident from the second incident portion 10 into the interior of the second lens body 11 is converged in a manner close to the optical axis AX4 while being guided toward the front of the second lens body 11, wherein the optical axis AX4 is an optical axis inclined obliquely upward relative to the optical axis AX3 of the second light L2 emitted from the second light source 3.

[0146] The second light L21 incident on the first boundary surface T1 passes through the first boundary surface T1, is guided toward the emission portion 8 after being incident on the inside of the first lens body 9, and is emitted from the emission portion 8 to the outside of the first lens body 9. Furthermore, the second light L21 emitted to the outside of the first lens body 9 is incident on the inside of the third lens body 12 from the incident surface 12a through the air layer K, and is emitted from the emission surface 12b to the outside of the third lens body 12. As a result, the second light L21 forms a larger lens than the first lens body 9. Figure 15 The light distribution pattern HP for high beam shown has the line HH positioned upward.

[0147] On the other hand, the second light L22 incident on the second boundary surface T2 passes through the second boundary surface T2, is incident on the inside of the first lens body 9, is guided toward the emission portion 8, and is emitted from the emission portion 8 to the outside of the first lens body 9. Furthermore, the second light L22 emitted to the outside of the first lens body 9 is incident from the incident surface 12a to the inside of the third lens body 12 through the air layer K, and is emitted from the emission surface 12b to the outside of the third lens body 12. Thus, the second light L22 forms Figure 15 The light distribution pattern shown is the lower light distribution pattern among the high-beam light distribution patterns HP.

[0148] In addition, the second light L22 incident on the second boundary surface T2, when passing through the second boundary surface T2, is close in position and light angle to the first light L12 reflected at the second boundary surface T2. As a result, the second light L22 is emitted to a position below the cutoff line CL of the low beam light distribution pattern LP, thereby enabling Figure 15 The lower portion of the illustrated high-beam light distribution pattern HP overlaps with the cutoff line CL of the low-beam light distribution pattern LP.

[0149] In the vehicle lamp 1B of the present embodiment, a portion of the first light L1 emitted from the first light source 2 is incident from the third incident portion 13 to the interior of the second lens 11. Figure 9 In the vertical cross section of the illustrated vehicle lamp 1A, the first light L13 incident on the second lens body 11 from the third incident portion 13 is guided forward of the second lens body 11 while diffusing toward the vicinity of the boundary line S.

[0150] The first light L13 incident on the first boundary surface T1 passes through the first boundary surface T1, is guided toward the emission portion 8 after being incident on the inside of the first lens body 9, and is emitted from the emission portion 8 to the outside of the first lens body 9. Furthermore, the first light L13 emitted to the outside of the first lens body 9 is incident on the inside of the third lens body 12 from the incident surface 12a through the air layer K, and is emitted to the outside of the third lens body 12 from the emission surface 12b. As a result, the first light L13 is incident on the inside of the third lens body 12 from the incident surface 12a through the air layer K, and is emitted from the emission surface 12b to the outside of the third lens body 12. Figure 15 An overhead light distribution pattern (third light distribution pattern) OP for illuminating road signs and the like is formed above the cutoff line CL in the illustrated low-beam light distribution pattern LP.

[0151] As described above, in the vehicle lamp 1B of the present embodiment, by using the projection lens 4 to project the first light L1 and the second light L2 emitted from the above-mentioned first light source 2 and the second light source 3, a good low beam light distribution pattern LP, a high beam light distribution pattern HP, and an overhead light distribution pattern OP required for the low beam light distribution pattern LP can be obtained.

[0152] In addition, in the vehicle lamp 1B of this embodiment, the first boundary surface T1 and the second boundary surface T2 of the first lens body 9 and the second lens body 11 constituting the above-mentioned projection lens 4 are connected to each other via the intermediate layer M, so that there is no air layer between the first boundary surface T1 and the second boundary surface T2, but they are connected via the intermediate layer M.

[0153] Thus, in the vehicle lamp 1B of this embodiment, Fresnel loss between the first boundary surfaces T1 and the second boundary surfaces T2 can be prevented, and the utilization efficiency of the first light L1 and the second light L2 emitted from the first light source 2 and the second light source 3 can be improved.

[0154] Furthermore, in the vehicle lamp 1B of the present embodiment, by suppressing the height dimension of the projection lens 4 described above, it is possible to achieve overall thickness reduction.

[0155] In the vehicle lamp 1B of this embodiment, by adding the above-mentioned third lens body 12, the function of converging the first light L1 and the second light L2 in the vertical direction of the vehicle lamp 1B and the function of converging the first light L1 and the second light L2 in the horizontal direction of the vehicle lamp 1B can be shared between the output portion 8 of the first lens body 9 and the third lens body 12.

[0156] (Third embodiment)

[0157] Next, as a third embodiment of the present invention, for example Figure 13 and Figure 14 The vehicle lamp 1C shown will be described.

[0158] also, Figure 13 It is a vertical cross-sectional view showing the structure of the vehicle lamp 1C. Figure 14 1C is a horizontal cross-sectional view showing the structure of the vehicle lamp 1C. In the following description, description of parts equivalent to those of the vehicle lamp 1A will be omitted, and the same reference numerals will be given in the drawings.

[0159] like Figure 13 As shown, the vehicle lamp 1C of this embodiment has the structure of the vehicle lamp 1A described above, in which the refractive index of the second lens body 11 is greater than the refractive index of the first lens body 9. Therefore, in this embodiment, for example, the second lens body 11 is made of polycarbonate resin (PC) and the first lens body 9 is made of acrylic resin (PMMA).

[0160] The third incident portion 13 includes: a concave diffusion incident surface 13b, which is located on the upper side of a portion protruding from a position above the focusing reflection surface 10c, and is used for incident part of the first light L1 emitted from the first light source 2; and a concave diffusion reflection surface 13c, which is located on the lower side of the protruding portion, and reflects the first light L13 incident from the diffusion incident surface 13b.

[0161] In the third incident portion 13, the first light L13 of the first light L1 radially emitted from the first light source 2 and incident from the diffuse incident surface 13b into the interior of the second lens body 11 is refracted toward the diffuse reflection surface 13c and then reflected forward by the diffuse reflection surface 13c, wherein the diffuse incident surface 13b is located below the portion opposite to the first light source 2.

[0162] Therefore, in Figure 13 In the vertical cross section of the illustrated vehicle lamp 1C, the first light L13 incident on the second lens body 11 from the third incident portion 13 is guided forward of the second lens body 11 while diffusing toward the vicinity of the boundary line S.

[0163] On the other hand, Figure 14 In the horizontal cross section of the illustrated vehicle lamp 1C, the first light L13 incident on the interior of the second lens body 11 from the third incident portion 13 is guided while diffusing toward the front of the second lens body 11 .

[0164] Furthermore, the first light L13 incident on the interior of the second lens body 11 from the third incident portion 13 passes through the first boundary surface T1 located in front of the second lens body 11 and is incident on the interior of the first lens body 9. The first light L13 incident on the interior of the first lens body 9 is guided toward the exit portion 8 and is emitted from the exit portion 8 to the outside of the first lens body 9.

[0165] Therefore, the first light L13 is Figure 15An overhead light distribution pattern (third light distribution pattern) OP for illuminating road signs and the like is formed above the cutoff line CL in the illustrated low-beam light distribution pattern LP.

[0166] As described above, in the vehicle lamp 1C of the present embodiment, similarly to the above-mentioned vehicle lamp 1A, by projecting the first light L1 and the second light L2 emitted from the first light source 2 and the second light source 3 using the projection lens 4, a good low beam light distribution pattern LP, a high beam light distribution pattern HP, and an overhead light distribution pattern OP required for the low beam light distribution pattern LP can be obtained.

[0167] Furthermore, the structure of the vehicle lamp 1C is not limited to being applied to the structure of the vehicle lamp 1A, but can also be applied to the structure of the vehicle lamp 1B.

[0168] In addition, the present invention is not necessarily limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0169] For example, in the above-described vehicle lamps 1A, 1B, and 1C, the first lens body 9 and the second lens body 11 are butted against each other via the intermediate layer M. However, the intermediate layer M may be omitted and the first lens body 9 and the second lens body 11 may be directly butted against each other.

[0170] Furthermore, the vehicle lamp to which the present invention is applied is suitable for use in the above-mentioned vehicle headlamp, but the vehicle lamp to which the present invention is applied is not limited to the above-mentioned front vehicle lamp, and the present invention can also be applied to rear vehicle lamps such as rear combination lamps.

[0171] That is, the present invention can be widely applied to the following vehicle lamp, which includes: a first light source that emits a first light; a second light source that is arranged adjacent to the first light source and emits the second light in the same direction as the first light; and a projection lens that projects the first light and the second light in the same direction as each other.

[0172] In addition, the first light source and the second light source are not limited to the above-mentioned LEDs. For example, light-emitting elements such as laser diodes (LDs) may also be used. In addition, the colors of the first light and the second light are not limited to the above-mentioned white light. They can be appropriately changed according to their use, for example, red light, orange light, etc. In addition, it is also possible to configure the first light source and the second light source to selectively emit first light and second light of different colors.

[0173] In addition, in the above-mentioned vehicle lamps 1A, 1B, and 1C, the direction in which the above-mentioned first light source 2 and second light source 3 are arranged is the vertical direction of the vehicle lamps 1A, 1B, and 1C, and the direction in which the boundary line S extends is the horizontal direction of the vehicle lamps 1A, 1B, and 1C, but the present invention can also be applied to vehicle lamps in which the direction in which the first light source and the second light source are arranged is the horizontal direction of the vehicle lamp and the direction in which the boundary line extends is the vertical direction of the vehicle lamp.

[0174] Description of Reference Numerals

[0175] 1A, 1B, 1C: Vehicle lamp; 2: First light source; 3: Second light source; 4: Projection lens; 5: Circuit board; 6: Heat sink; 7: First incident portion; 8: Exit portion; 9: First lens body; 10: Second incident portion; 11: Second lens body; 12: Third lens body; 13: Third incident portion; T1: First boundary surface; T2: Second boundary surface; M: Intermediate layer; S: Boundary line; L1: First light; L2: Second light; LP: Low beam light distribution pattern; HP: High beam light distribution pattern; OP: Overhead light distribution pattern.

Claims

1. A vehicle lamp, characterized in that: have: a first light source emitting first light; a second light source disposed adjacent to the first light source and emitting second light in the same direction as the first light; as well as a projection lens that projects the first light and the second light in the same direction, The projection lens comprises: a first lens body including a first incident portion located at a position opposite to the first light source and an exit portion located on a side opposite to the first incident portion; and a second lens body including a second incident portion located at a position opposite to the second light source and a third incident portion located between the first incident portion and the second incident portion, The vehicle lamp has the following structure: the first lens body and the second lens body are butted against each other in a state where a first boundary surface and a second boundary surface are sandwiched between the first lens body and the second lens body, wherein the first boundary surface is a boundary surface between the first lens body and the second lens body provided between the emission portion and the third incidence portion, and the second boundary surface is a boundary surface between the first lens body and the second lens body provided over the entire range between the first incidence portion and the third incidence portion from a boundary line with the first boundary surface. Furthermore, the first boundary surface and the second boundary surface are arranged to form an acute angle with respect to the boundary line. Among the first light incident on the interior of the first lens body from the first incident portion, the first light reflected on the second boundary surface is emitted from the emission portion to the outside of the first lens body. Of the second light incident on the interior of the second lens body from the second incident portion, the second light transmitted through the first boundary surface and the second light transmitted through the second boundary surface are emitted from the emission portion to the outside of the first lens body. Of the first light incident on the interior of the second lens body from the third incident portion, the first light transmitted through the first boundary surface is emitted from the emission portion to the outside of the first lens body.

2. The vehicle lamp according to claim 1, wherein: The refractive index of the second lens body is smaller than the refractive index of the first lens body.

3. The vehicle lamp according to claim 2, wherein: The vehicle lamp has a structure in which the first lens body and the second lens body are butted against each other via an intermediate layer. The refractive index of the second lens body is lower than the refractive index of the intermediate layer.

4. The vehicle lamp according to any one of claims 1 to 3, characterized in that: The emission portion includes a lens surface that converges the first light and the second light in a direction in which the boundary line extends and in a direction in which the first light source and the second light source are arranged.

5. The vehicle lamp according to any one of claims 1 to 3, characterized in that: The projection lens has a third lens body located on a side opposite to the emission portion. The emission portion includes a lens surface that converges the first light and the second light in a direction in which the boundary line extends. The third lens body has a lens surface that converges the first light and the second light emitted from the emission portion in a direction in which the first light source and the second light source are arranged.

6. The vehicle lamp according to claim 5, characterized in that: The third lens body is integrated with the first lens body with an air layer provided between the third lens body and the emission portion.

7. The vehicle lamp according to any one of claims 1 to 3, characterized in that: The first light source and the second light source are provided on the same surface of the same substrate.

8. The vehicle lamp according to any one of claims 1 to 3, characterized in that: The first light incident from the first incident portion and projected by the projection lens forms a first light distribution pattern including a cutoff line defined by the boundary line at an upper end. The second light incident from the second incident portion and projected by the projection lens forms a second light distribution pattern, and the second light distribution pattern is located above the first light distribution pattern. The first light incident from the third incident portion and projected by the projection lens forms a third light distribution pattern, and the third light distribution pattern is located above the cutoff line.

Images