Vehicle lighting

Abstract

To provide a vehicle lighting fixture with a configuration for appropriate light diffusion. [Solution] The vehicle light fixture 1 of the present invention comprises a first lens 40 having an emission surface 41, and a projection lens 60 spaced apart in front of the first lens 40. The emission surface 41 includes a first emission surface 41A that emits light in the direction of a first optical axis AX1, and a second emission surface 41B that emits light in the direction of a second optical axis AX2 and is adjacent to the first emission surface 41A, with the second emission surface 41B being inclined toward the first emission surface 41A.

Description

Technical Field

[0001] The present invention relates to vehicle lamps.

Background Art

[0002] Patent Document 1 discloses a vehicle lamp including a low beam light source unit, a high beam light source unit, and a projection lens that projects the light of each light source unit to form a required light distribution. The vehicle lamp has a low beam lens unit that projects the light of the low beam light source unit to form a low beam light distribution and a high beam lens unit that projects the light of the high beam light source unit to form a high beam light distribution, and these units are integrally formed. Different structures of each light source unit can be arranged, and the front surface of the projection lens is configured to have the same lens shape regardless of the difference in the light source unit.

[0003] In the vehicle lamp of Patent Document 1, as a configuration on the high beam side, it includes a correction lens provided on the front side of a plurality of white LEDs and having one emission surface that protrudes forward in a curved shape, and a projection lens provided on the front side of the correction lens and including one incident surface that protrudes backward in a curved shape corresponding to the correction lens.

[0004] The projection lens has one surface that protrudes forward in a curved shape for the emission surface as well. That is, the projection lens of Patent Document 1 has a so-called biconvex lens structure for the portion corresponding to the correction lens.

[0005] The correction lens has one surface that protrudes backward in a curved shape for the incident surface as well. That is, the correction lens of Patent Document 1 has a so-called biconvex lens shape.

[0006] On the other hand, Patent Document 2 describes a vehicle lamp comprising a light source and a projection lens, configured to project light emitted from the light source toward the front of the lamp via the projection lens, wherein a light guide is arranged between the light source and the projection lens to guide the light emitted from the light source and cause it to enter the projection lens, the light source comprises a first light source for forming a low beam light distribution pattern and a second light source for forming a high beam light distribution pattern by simultaneous illumination with the first light source, the second light source is composed of a plurality of second light-emitting elements arranged in a left-right direction below the first light source, the light guide comprises a first incident part for receiving light emitted from the first light source and a plurality of second incident parts for receiving light emitted from each of the plurality of second light-emitting elements, the light guide comprises a first emission surface for emitting light for the low beam light distribution pattern and a high beam light distribution pattern A vehicle lamp is disclosed which includes a second emission surface that emits light for an additional light distribution pattern that is added to the low beam light distribution pattern when forming a turn, and a second incidence section which includes an incidence surface that causes light emitted from a second light-emitting element to be incident as light directed toward the second emission surface, a side incidence surface that causes light emitted from the second light-emitting element to be incident around the front incidence surface as light directed toward away from the front incidence surface, and a total reflection surface that causes light emitted from the second light-emitting element incident from the side incidence surface to be totally reflected toward the second emission surface, and a vehicle lamp is disclosed which includes a second incidence section located at the left and right ends of a plurality of second incidence sections which is configured to form a diffusion region of the additional light distribution pattern with reflected light from the reflection region on the left and right end side of the total reflection surface and to form a central region of the additional light distribution pattern with reflected light from the reflection region on the left and right central side of the total reflection surface.

[0007] In the vehicle lighting device described in Patent Document 2, the low beam side configuration includes a plurality of first light-emitting elements, a first emission surface that is curved and recessed toward the rear and emits light from the first light-emitting elements, and a projection lens provided on the front side of the first emission surface, the projection lens being a biconvex lens. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Japanese Patent Publication No. 2024-49456 [Patent Document 2] Japanese Patent Publication No. 2023-66000 [Overview of the Initiative] [Problems that the invention aims to solve]

[0009] Furthermore, in the configuration of Patent Document 1, the projection lens portion corresponding to the auxiliary lens has a biconvex lens structure and therefore has one back focus, and the auxiliary lens also has one back focus, which results in a problem of low freedom in superimposing light from multiple white LEDs.

[0010] Therefore, the first objective is to provide a vehicle lighting device equipped with a configuration for appropriate light superposition.

[0011] Furthermore, in the configuration of Patent Document 2, since the first emission surface is formed as a single curved concave surface that is recessed towards the rear, there is a problem that the degree of freedom of the diffusion state from the multiple first light-emitting elements is low.

[0012] Therefore, from another perspective, the objective is to provide a vehicle lighting fixture equipped with a configuration for appropriate light diffusion. [Means for solving the problem]

[0013] To achieve the above objective, the present invention is understood by the following configuration. The vehicle lighting device of the present invention is A first lens having an emission surface, The system comprises a projection lens provided spaced apart in front of the first lens, The aforementioned ejection surface is, A first emission surface that irradiates light in the direction of the first optical axis, Light is irradiated in the direction of the second optical axis, and the second emission surface is adjacent to the first emission surface, The second ejection surface is inclined toward the first ejection surface.

Advantages of the Invention

[0014] According to the present invention, in one aspect, there is provided a vehicle lamp having a configuration for an appropriate light diffusion state.

Brief Description of the Drawings

[0015] [Figure 1] It is a top view showing a vehicle equipped with a vehicle lamp according to an embodiment of the present invention. [Figure 2] It is a perspective view of a vehicle lamp according to an embodiment of the present invention. [Figure 3] It is an exploded perspective view of a vehicle lamp according to an embodiment of the present invention. [Figure 4] It is a view of a first holder according to an embodiment of the present invention as seen from the front side. [Figure 5] It is a cross-sectional view mainly showing an inner first lens and a projection lens according to an embodiment of the present invention. [Figure 6] It is a view showing the overlap on a screen of a light distribution pattern by light from a light emitting portion according to an embodiment of the present invention. [Figure 7] It is a view showing a light distribution pattern on a screen by light from a light emitting portion according to an embodiment of the present invention. [Figure 8] It is a cross-sectional view mainly showing an outer first lens and a projection lens according to an embodiment of the present invention. [Figure 9] It is a perspective view of an outer first lens according to an embodiment of the present invention as seen from the rear upper oblique side. [Figure 10] It is a perspective view of an outer first lens according to an embodiment of the present invention as seen from the front lower oblique side. [Figure 11] It is a view showing a low beam light distribution pattern on a screen by light from a light emitting portion according to an embodiment of the present invention. [Figure 12] It is a light distribution pattern on a screen by light reflected by a plurality of divided reflecting surfaces according to an embodiment of the present invention. [Figure 13]As a comparative example, this shows the light distribution pattern on the screen when the forward reflective surface located on the other side (outside) is not a divided reflective surface but an undivided surface. [Modes for carrying out the invention]

[0016] Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as "embodiments") will be described in detail with reference to the attached drawings. Throughout the description of the embodiments, the same elements are assigned the same numbers or reference numerals.

[0017] However, please note that, for the sake of readability in the drawings, not all identical elements are assigned numbers or symbols.

[0018] Additionally, some parts of the illustration emphasize the structure to make the explanation easier to understand, and dimensions and other details may differ from reality.

[0019] <<Embodiment>> A vehicle lighting device 1 according to an embodiment of the present invention will be described with reference to Figures 1 to 13.

[0020] Figure 1 is a top view showing a vehicle C equipped with a vehicle lighting device 1 according to an embodiment of the present invention. As shown in Figure 1, the vehicle light fixture 1 of this embodiment is a so-called headlight, which is installed on the front side of the vehicle C.

[0021] In the following description of vehicle lighting fixture 1, when installed on vehicle C, the side closer to the center line in the width direction of vehicle C (see dashed line) is referred to as one side (inside), and the side further away from the center line is referred to as the other side (outside).

[0022] Furthermore, the following explanation will use the vehicle light fixture 1 installed on the right side of vehicle C as an example when viewed from the driver's seat. However, since the left and right vehicle light fixtures 1 differ only in that they have a symmetrical configuration, the explanations below regarding one side and the other side are the same for the vehicle light fixture 1 installed on the left side of vehicle C.

[0023] Figure 2 is a perspective view of a vehicle lighting device 1 according to an embodiment of the present invention, and Figure 3 is an exploded perspective view of a vehicle lighting device 1 according to an embodiment of the present invention. As shown in Figure 3, the vehicle light fixture 1 comprises a base portion 10, a light source portion 20 attached to the base portion 10, an inner first lens 30 provided in front of the light irradiation direction of the light source portion 20 (also simply called the front) and positioned on one side, and an outer first lens 40 provided in front of the light source portion 20 and positioned on the other side.

[0024] Furthermore, the vehicle light fixture 1 includes a first holder 50 that is screw-fixed to the base portion 10 and holds an inner first lens 30 and an outer first lens 40, a projection lens 60 that is spaced apart in front of the inner first lens 30 and the outer first lens 40, and a second holder 70 that is screw-fixed to the first holder 50 and holds the projection lens 60.

[0025] (Base section 10) The base unit 10 comprises a main body unit 11 and a plurality of heat dissipation fins 12. The main body 11 comprises a flat mounting plate 11A on which the light source unit 20 is positioned on its surface side, and a pair of side plates 11B extending forward from one end and the other end of the mounting plate 11A.

[0026] Multiple heat dissipation fins 12 are provided, extending vertically and rearward from the back surface of the mounting plate 11A, and spaced apart from one side to the other.

[0027] For example, the main body 11 and the heat dissipation fins 12 may be formed using aluminum or other materials with good thermal conductivity.

[0028] (Light source section 20) The light source unit 20 comprises a single substrate 21, multiple LED chips serving as light-emitting units 22 located on the substrate 21 at positions corresponding to the inner first lens 30, and multiple LED chips serving as light-emitting units 23 located on the substrate 21 at positions corresponding to the outer first lens 40.

[0029] In this embodiment, four LED chips serving as light-emitting units 22 are provided on the substrate 21, and although partially hidden by the other side plate 11B in Figure 3, five LED chips serving as light-emitting units 23 are provided on the substrate 21.

[0030] (Inner first lens 30) The inner first lens 30 has an inner emitting surface 31 that emits light corresponding to the high beam light distribution pattern, and its relationship with the projection lens 60 will be explained in detail later.

[0031] (Outer first lens 40) The outer first lens 40 has an outer emission surface 41 that emits light corresponding to the low beam light distribution pattern, and its relationship with the projection lens 60 will be explained in detail later.

[0032] (First holder 50) Figure 4 is a view of the first holder 50 of an embodiment according to the present invention, as seen from the front. As shown in Figure 4, the first holder 50 includes an inner opening 51 on one side that corresponds to the inner emission surface 31 (not shown) of the inner first lens 30 (not shown), and an outer opening 52 on the other side that corresponds to the outer emission surface 41 of the outer first lens 40.

[0033] Then, the first holder 50 is screw-fixed to the base portion 10 as described above, with the inner first lens 30 (not shown) mounted so that its inner exit surface 31 (not shown) corresponds to the inner opening 51, and the outer first lens 40 mounted so that its outer exit surface 41 corresponds to the outer opening 52.

[0034] In other words, the first holder 50 is a holder for receiving the inner first lens 30 (not shown) and the outer first lens 40.

[0035] (Projection lens 60) The projection lens 60 is a lens in which the parts corresponding to the inner first lens 30 (not shown) and the outer first lens 40 are integrally formed. Details, including the relationship with the inner first lens 30 (not shown) and the outer first lens 40, will be explained later.

[0036] The projection lens 60 may be separated into two projection lenses: an inner projection lens consisting of a portion corresponding to the inner first lens 30 (not shown), and an outer projection lens consisting of a portion corresponding to the outer first lens 40.

[0037] In this case, the configuration of the projection lens 60 corresponding to the inner first lens 30 (not shown), as described below, can be provided on the inner projection lens, and the configuration of the projection lens 60 corresponding to the outer first lens 40 can be provided on the outer projection lens.

[0038] (Second holder 70) As shown in Figure 3, the second holder 70 has an opening 71 into which the projection lens 60 is inserted. After the projection lens 60 is inserted into the opening 71 (see Figure 2), the second holder 70 is screw-fixed to the first holder 50 as described earlier.

[0039] Next, we will explain the configuration for achieving proper light superposition while describing the high beam light distribution side. Furthermore, if a similar configuration is applicable, the configuration described below may be applied to form a light distribution other than the high beam distribution.

[0040] Figure 5 is a cross-sectional view mainly showing the inner first lens 30 and projection lens 60 of an embodiment according to the present invention.

[0041] Note that while Figure 5 shows the state of light rays with arrows, it represents only a small fraction of the light rays necessary for explanation, and there are actually many more light rays.

[0042] Furthermore, in Figure 5, for the sake of clarity, some parts of the inner first lens 30 and the projection lens 60 have been omitted from the illustration.

[0043] As shown in Figure 5, the inner emission surface 31 of the inner first lens 30 includes an inner first emission surface 31A provided on one side and an inner second emission surface 31B provided on the other side and adjacent to the inner first emission surface 31A. In Figure 5, the inner first ejection surface 31A and the inner second ejection surface 31B are arranged side by side (left and right), but they may also be arranged side by side vertically. In other words, the inner first ejection surface 31A and the inner second ejection surface 31B are not limited to being arranged side by side horizontally, but may be arranged side by side vertically.

[0044] On the other hand, the projection lens 60 is provided separately in front of the inner first lens 30 and has an inner incident surface 61 corresponding to the inner first lens 30.

[0045] The inner incident surface 61 includes an inner first incident surface 61A provided on one side, and an inner second incident surface 61B provided on the other side and adjacent to the inner first incident surface 61A. Furthermore, the boundary between the inner first incident surface 61A and the inner second incident surface 61B is located approximately where the boundary between the inner first exit surface 31A and the inner second exit surface 31B is projected forward, as shown by the dashed line.

[0046] As can be seen in Figure 5, the inner first incident surface 61A is the incident surface to which light mainly enters from the inner first exit surface 31A, and the inner second incident surface 61B is the incident surface to which light mainly enters from the inner second exit surface 31B.

[0047] However, a portion of the light from the inner second exit surface 31B is incident on the inner first incident surface 61A near the portion adjacent to the inner second incident surface 61B, and a portion of the light from the inner first exit surface 31A is incident on the inner second incident surface 61B near the portion adjacent to the inner first incident surface 61A.

[0048] Furthermore, the inner first incident surface 61A is inclined backward from one side to the other, and the inner second incident surface 61B is inclined backward from one side to the other. As a result, the portion of the projection lens 60 corresponding to the inner first lens 30 does not have a clear rear focus.

[0049] Therefore, since light from the inner first emission surface 31A and the light from the inner second emission surface 31B are incident on the projection lens 60 while maintaining a good overlap, it is possible to suitably form areas that are desired to be formed by the overlap of light distribution, such as hot zones required for high beam light distribution patterns.

[0050] Furthermore, if there is a clear back focus, the design will concentrate the light there, which may result in some light not being utilized effectively. However, as mentioned above, by not having a clear back focus, the inner exit surface 31 can be designed primarily to irradiate the inner incident surface 61 with light, thereby improving the efficiency of light utilization.

[0051] Furthermore, since the inner first emission surface 31A is located further forward than the inner second emission surface 31B and is clearly separated, individual surface designs can be performed, further increasing the degree of freedom in light distribution design and enabling the formation of an even more appropriate overlap of light distribution. Furthermore, the inner first ejection surface 31A may be located further back than the inner second ejection surface 31B, and may be clearly separated from it.

[0052] Furthermore, the inner first ejection surface 31A includes an inner first other-side curved surface 31A1 provided on the other side, which curves toward the rear toward the boundary between the inner first ejection surface 31A and the inner second ejection surface 31B, and the inner second ejection surface 31B includes an inner second one-side curved surface 31B1 provided on one side, which curves toward the rear toward the boundary between the inner first ejection surface 31A and the inner second ejection surface 31B.

[0053] By providing such an inner first other curved surface 31A1 and an inner second one-side curved surface 31B1, as shown in Figure 5, light from the inner first other-side curved surface 31A1 is directed toward the inner first incident surface 61A, suppressing stray light toward the inner second incident surface 61B. Similarly, light from the inner second one-side curved surface 31B1 is directed toward the inner second incident surface 61B, suppressing stray light toward the inner first exit surface 31A.

[0054] In this embodiment, as shown in Figure 5, the vehicle light fixture 1 includes two light-emitting units 22 that emit light corresponding to the inner first emission surface 31A, and two light-emitting units 22 that emit light corresponding to the inner second emission surface 31B.

[0055] However, the number of light-emitting units 22 to be provided can be determined by the required luminous intensity, and therefore the vehicle lamp 1 may include one or more light-emitting units 22 that emit light corresponding to the inner first emission surface 31A, and one or more light-emitting units 22 that emit light corresponding to the inner second emission surface 31B.

[0056] Figure 6 shows the overlap of the light distribution patterns on a screen caused by light from the light-emitting unit 22 in an embodiment of the present invention. In Figure 6, the light distribution patterns formed by the light from each light-emitting unit 22 are shown as HP1, HP2, HP3, and HP4, sequentially from one side to the other in Figure 5.

[0057] Figure 7 shows the high-beam light distribution pattern on the screen caused by light from the light-emitting unit 22 of the embodiment according to the present invention, and the state of the high-beam light distribution pattern is indicated by isophoton lines.

[0058] As shown in Figure 6, the light distribution pattern overlaps well near the center where the vertical reference line V and the horizontal reference line H intersect. As a result, as shown in Figure 7, a good hot zone with high luminosity is formed near the center where the vertical reference line V and the horizontal reference line H intersect.

[0059] Next, we will explain the configuration for achieving an appropriate light diffusion state while describing the low beam light distribution side. Furthermore, if a similar configuration is applicable, the configuration described below may be applied to form a light distribution other than the low beam distribution.

[0060] Figure 8 is a cross-sectional view mainly showing the outer first lens 40 and projection lens 60 of an embodiment according to the present invention. As shown in Figure 8, the outer emission surface 41 of the outer first lens 40 includes an outer first emission surface 41A that curves to protrude, an outer second emission surface 41B adjacent to one side of the outer first emission surface 41A and curves to protrude, and an outer third emission surface 41C adjacent to the other side of the outer first emission surface 41A, and curves to protrude, sandwiching the outer first emission surface 41A between the outer second emission surface 41B and the outer third emission surface 41C.

[0061] The outer first lens 40 has a first rear focus BF1 corresponding to the outer first emission surface 41A, a second rear focus BF2 corresponding to the outer second emission surface 41B, and a third rear focus BF3 corresponding to the outer third emission surface 41C.

[0062] Therefore, the outer first emission surface 41A emits light in the direction of the first optical axis AX1, the outer second emission surface 41B emits light in the direction of the second optical axis AX2, and the outer third emission surface 41C emits light in the direction of the third optical axis AX3.

[0063] Furthermore, the outer second emission surface 41B is inclined toward the outer first emission surface 41A such that the second optical axis AX2 intersects the first optical axis AX1 in front of the projection lens 60, and the outer third emission surface 41C is inclined toward the outer first emission surface 41A such that the third optical axis AX3 intersects the first optical axis AX1 and the second optical axis AX2 in front of the projection lens 60.

[0064] Therefore, the light from the outer second emission surface 41B and the light from the outer third emission surface 41C are inter-irradiated.

[0065] Furthermore, by adjusting the inclination of the outer second emission surface 41B and the outer third emission surface 41C, the cross-irradiation state can be adjusted, thereby forming an appropriate diffuse light distribution.

[0066] Furthermore, in this embodiment, the central positions of both the outer second emission surface 41B and the outer third emission surface 41C (the position where the outer second emission surface 41B intersects with the second optical axis AX2, and the position where the outer third emission surface 41C intersects with the third optical axis AX3) are located forward of the central position of the outer first emission surface 41A (the position where the outer first emission surface 41A intersects with the first optical axis AX1).

[0067] In other words, since the outer second emission surface 41B and the outer third emission surface 41C are located in front of the outer first emission surface 41A, there is no step or side wall between the outer second emission surface 41B and the outer third emission surface 41C and the outer first emission surface 41A. This prevents light from hitting the step and becoming stray light, thus improving the efficiency of light utilization.

[0068] Figure 9 is a perspective view of the outer first lens 40 of an embodiment according to the present invention, viewed from the rear and obliquely upper side. Figure 9 also shows five LEDs, which are multiple light-emitting units 23 provided in conjunction with the outer first lens 40.

[0069] Figure 10 is a perspective view of the outer first lens 40 of an embodiment according to the present invention, viewed from the front, side, and diagonally downward side. Figure 11 is a diagram showing the low-beam light distribution pattern on the screen caused by light from the light-emitting unit 23 of an embodiment according to the present invention.

[0070] As will be explained in more detail later, the light from the light-emitting section 23 is reflected back toward the outer emission surface 41 by the rearward reflecting surface RF1 on the rear side of the outer emission surface 41, as shown in Figure 9. As shown in Figure 9, an elbow E is provided below the center of the rear reflective surface RF1 to form the cutoff line of the low beam light distribution pattern, and the outer first emission surface 41A is the emission surface corresponding to the elbow E that forms the cutoff line.

[0071] As shown in Figure 10, the outer first lens 40 is equipped with an overhead light distribution surface 42 for overhead light distribution, which is provided adjacent to the lower side of the portion corresponding to the outer first light emission surface 41A.

[0072] More specifically, the overhead discharge surface 42 corresponds to the entire outer first discharge surface 41A and is provided adjacent to the lower side of the outer first discharge surface 41A. The overhead ejection surface 42 may be provided over the entire lower side of the outer first ejection surface 41A, as in this embodiment, or it may be provided only partially on the lower side of the outer first ejection surface 41A.

[0073] In this embodiment, as shown in Figure 10, the overhead ejection surface 42 is formed by a plurality of divided surfaces 42A.

[0074] Then, by forming multiple low-intensity light distribution patterns that will result in overhead light distribution on each dividing surface 42A in this manner, and by superimposing these light distribution patterns on the screen, the necessary luminous intensity for the overhead light distribution pattern OVH is obtained, as shown in Figure 11, and the luminous intensity within the overhead light distribution pattern OVH is made uniform. Furthermore, as shown in Figure 11, the outer first emission surface 41A mainly forms the lower light distribution pattern LP1 on the central side (overhead light distribution pattern OVH) of the low beam light distribution pattern, the outer second emission surface 41B mainly forms the outer light distribution pattern LP2 of the low beam light distribution pattern, and the outer third emission surface 41C mainly forms the inner light distribution pattern LP3 of the low beam light distribution pattern.

[0075] On the other hand, as shown in Figure 10, the vehicle light fixture 1 is integrally provided with the light guide member that constitutes the outer first lens 40, and is located on the optical path from the light-emitting part 23 (see Figure 9) to the outer emission surface 41. It includes a plurality of forward reflecting parts 43 provided on the front side of each light-emitting part 23, corresponding to each light-emitting part 23, and a plurality of light-diffusing parts 44 provided adjacent to the forward reflecting part 43 in the light reflection direction (upper side in Figure 10), corresponding to each light-emitting part 23.

[0076] In this embodiment, the light diffusion portion 44 is formed by knurling, in which linear recesses extending in the light reflection direction are arranged adjacently from one side to the other.

[0077] By providing such a light-diffusing section 44, light that could potentially cause glare can be diffused, thereby suppressing glare.

[0078] The forward reflecting section 43 located on the other side (outside) is formed of multiple segmented reflecting surfaces 43A, and by controlling the light distribution, it is designed to intensify the light near the horizontal reference line H on the screen, as will be described later.

[0079] Figure 12 shows the light distribution pattern on the screen due to light reflected by a plurality of segmented reflective surfaces 43A in an embodiment of the present invention.

[0080] Figure 13 shows the light distribution pattern on the screen when the forward reflective section 43 located on the other side (outside) is an undivided surface instead of a divided reflective surface 43A, as a comparative example.

[0081] As can be seen in Figures 12 and 11, the light distribution formed by the multiple segmented reflective surfaces 43A is mainly the portion of the low beam light distribution pattern to the left of the vertical reference line V, facing the screen.

[0082] As can be seen by comparing Figure 12 and Figure 13, the light distribution pattern reflected by multiple segmented reflective surfaces 43A (see Figure 12) has a slightly smaller light distribution range than the light distribution pattern when the surfaces are not segmented (see Figure 13), and the luminous intensity is higher closer to the horizontal reference line H.

[0083] Therefore, the low beam light distribution pattern also yields a good pattern with strong light near the horizontal reference line H.

[0084] Although the present invention has been described above based on specific embodiments, the present invention is not limited to the above embodiments.

[0085] For example, in the above embodiment, the inner exit surface 31 had two exit surfaces (inner first exit surface 31A and inner second exit surface 31B), and the inner incident surface 61 corresponding to the inner first lens 30 had correspondingly two incident surfaces (inner first incident surface 61A and inner second incident surface 61B).

[0086] However, the inner exit surface 31 may have three or more exit surfaces, and the inner incident surface 61 corresponding to the inner first lens 30 may also have three or more incident surfaces.

[0087] Furthermore, although the above embodiment shows a case where the outer emission surface 41 includes the outer third emission surface 41C, in the case of light directed toward one side (inward), it is less likely to deviate from the projection lens 60, and the outer first emission surface 41A may be extended to cover the range of the outer third emission surface 41C, thereby omitting the outer third emission surface 41C.

[0088] Furthermore, in the above embodiment, one side (inner) had a configuration related to the high beam light distribution pattern, and the other side (outer) had a configuration related to the low beam light distribution pattern. However, the other side (outer) may have a configuration related to the high beam light distribution pattern, and one side (inner) may have a configuration related to the low beam light distribution pattern. In this case, the only difference is that "inner" is read as "outer" and "outer" is read as "inner".

[0089] Thus, the present invention also includes modifications and improvements to the above embodiments, which will be clear to those skilled in the art from the claims.

[0090] Furthermore, with respect to the above embodiments, the following additional information is disclosed from the viewpoint of providing a vehicle lighting device 1 equipped with a configuration for appropriate light superposition. Note that the numbers and reference numerals correspond to the numbers and reference numerals used in the description of the embodiments. [Note 1] Vehicle lighting fixture 1, The aforementioned vehicle light fixture 1 is A first lens 30 having an emission surface 31, The system includes a projection lens 60 provided spaced apart in front of the first lens 30 and having an incident surface 61, The aforementioned ejection surface 31 is A first ejection surface 31A is provided on one side, It includes a second ejection surface 31B provided on the other side and adjacent to the first ejection surface 31A, The incident surface 61 is A first incident surface 61A is provided on one side, It includes a second incident surface 61B provided on the other side and adjacent to the first incident surface 61A, The first incident surface 61A is inclined towards the rear from the other side toward the one side, The second incident surface 61B is inclined towards the rear from one side to the other, The first incident surface 61A is the incident surface to which light mainly enters from the first exit surface 31A. A vehicle lighting device characterized in that the second incident surface 61B is mainly an incident surface into which light from the second exit surface 31B is incident. [Note 2] The vehicle lamp according to Appendix 1, characterized in that the boundary between the first incident surface 61A and the second incident surface 61B is located approximately as a projection of the boundary between the first output surface 31A and the second output surface 31B toward the front. [Note 3] The aforementioned vehicle light fixture 1 is One or more light-emitting parts 22 are provided corresponding to the first emission surface 31A and emit light, A vehicle lighting device according to Appendix 1 or Appendix 2, characterized by comprising one or more light-emitting parts 22 provided corresponding to the second emission surface 31B and emitting light. [Note 4] The first ejection surface 31A includes a first other-side curved surface 31A1 provided on the other side, which curves toward the rearward direction toward the boundary between the first ejection surface 31A and the second ejection surface 31B. The vehicle lamp according to any one of the appendices 1 to 4, characterized in that the second emission surface 31B is provided on one side and includes a second one-side curved surface 31B1 that curves toward the rear toward the boundary between the first emission surface 31A and the second emission surface 31B. [Note 5] The vehicle lighting device according to any one of the appendices 1 to 4, characterized in that the first emission surface 31A is located either forward or backward of the second emission surface 31B.

[0091] Furthermore, with respect to the above embodiments, the following additional information is disclosed with regard to providing a vehicle lighting device 1 equipped with a configuration for appropriate light diffusion. Note that the numbers and reference numerals correspond to the numbers and reference numerals used in the description of the embodiments. [Note 1] Vehicle lighting fixture 1, The aforementioned vehicle light fixture 1 is A first lens 40 having an emission surface 41, The system comprises a projection lens 60 provided spaced apart in front of the first lens 40, The aforementioned ejection surface 41 is A first emission surface 41A that irradiates light in the direction of the first optical axis AX1, Light is irradiated in the direction of the second optical axis AX2, and the second emission surface 41B adjacent to the first emission surface 41A is included, A vehicle light fixture characterized in that the second emission surface 41B is inclined toward the first emission surface 41A. [Note 2] The emission surface 41 irradiates light in the direction of the third optical axis AX3 and includes a third emission surface 41C adjacent to the first emission surface 41A, sandwiching the first emission surface 41A between the second emission surface 41B and the third emission surface 41C. The third ejection surface 41C is inclined toward the first ejection surface 41A, The vehicle lamp according to Appendix 1, characterized in that the third optical axis AX3 intersects the first optical axis AX1 and the second optical axis AX2 in front of the projection lens 60. [Note 3] The vehicle lighting device according to Appendix 2, characterized in that the center positions of both the second emission surface 41B and the third emission surface 41C are located forward of the center position of the first emission surface 41A. [Note 4] The first lens 40 includes an overhead light distribution surface 42 provided adjacent to the lower side of the portion of the first light output surface 41A corresponding to the elbow E that forms the cutoff line, The vehicle lighting device according to Appendix 1, characterized in that the overhead emission surface 42 is formed of a plurality of divided surfaces 42A. [Note 5] The emission surface 41 irradiates light in the direction of the third optical axis AX3 and includes a third emission surface 41C adjacent to the first emission surface 41A, sandwiching the first emission surface 41A between the second emission surface 41B and the third emission surface 41C. The vehicle light fixture according to Appendix 4, characterized in that the overhead emission surface 42 is provided adjacent to the lower side of the first emission surface 41A, corresponding to the entire first emission surface 41A. [Note 6] The aforementioned vehicle light fixture 1 includes a plurality of light-emitting parts 23 that emit light, The system comprises a plurality of reflectors 43 located on the optical path from the light-emitting unit 23 to the emission surface 41, each corresponding to a different light-emitting unit 23. The vehicle lamp according to Appendix 1, characterized in that the reflective portion 43 located on the outside is formed of a plurality of segmented reflective surfaces 43A. [Note 7] The vehicle lighting device according to Appendix 6, characterized in that it comprises a plurality of light-diffusing parts 44 provided adjacent to each of the light-emitting parts 23 on the side of the reflective part 43 in the light reflection direction. [Note 8] The vehicle lighting device according to Appendix 1, characterized in that the second optical axis AX2 intersects the first optical axis AX1 in front of the projection lens 60. [Explanation of Symbols]

[0092] 1...Vehicle lighting fixture, 10...Base section, 11...Main body section, 11A...Mounting plate, 11B...Side plate, 12...Heat dissipation fins, 20...Light source section, 21...Substrate, 22, 23...Light-emitting section, 30...Inner first lens, 31...Inner emission surface, 31A...Inner first emission surface, 31A1...Inner first other side curved surface, 31B...Inner second emission surface, 31B1...Inner second one side curved surface, 40...Outer first lens, 41...Outer emission surface, 41A...Outer first emission surface, 41B...Outer second emission surface, 41C...Outer third emission surface, 42 ...Overhead emission surface, 42A...Divided surface, 43...Forward reflecting section, 43A...Divided reflecting surface, 44...Light diffusion section, 50...First holder, 51...Inner aperture, 52...Outer aperture, 60...Projection lens, 61...Inner incident surface, 61A...Inner first incident surface, 61B...Inner second incident surface, 70...Second holder, 71...Aperture, AX1...First optical axis, AX2...Second optical axis, AX3...Third optical axis, BF1...First rear focus, BF2...Second rear focus, BF3...Third rear focus, C...Vehicle, RF1...Rear reflecting surface

Claims

1. Vehicle lighting fixtures, The aforementioned vehicle lighting fixture is, A first lens having an emission surface, The system comprises a projection lens provided spaced apart in front of the first lens, The aforementioned ejection surface is, A first emission surface that irradiates light in the direction of the first optical axis, Light is irradiated in the direction of the second optical axis, and the second emission surface is adjacent to the first emission surface, A vehicle light fixture characterized in that the second emission surface is inclined toward the first emission surface.

2. The aforementioned emission surface irradiates light in the direction of the third optical axis and includes a third emission surface adjacent to the first emission surface so as to sandwich the first emission surface between the second emission surface and the third emission surface. The third ejection surface is inclined toward the first ejection surface, The vehicle lamp according to claim 1, characterized in that the third optical axis intersects the first optical axis and the second optical axis in front of the projection lens.

3. The vehicle light fixture according to claim 2, characterized in that the center positions of both the second emission surface and the third emission surface are located forward of the center position of the first emission surface.

4. The first lens includes an overhead light distribution surface provided adjacent to the lower side of the portion of the first light-emitting surface corresponding to the elbow forming the cutoff line, The vehicle light fixture according to claim 1, characterized in that the overhead emission surface is formed of a plurality of divided surfaces.

5. The aforementioned emission surface irradiates light in the direction of the third optical axis and includes a third emission surface adjacent to the first emission surface so as to sandwich the first emission surface between the second emission surface and the third emission surface. The vehicle light fixture according to claim 4, characterized in that the overhead emission surface is provided adjacent to the lower side of the first emission surface, corresponding to the entirety of the first emission surface.

6. The aforementioned vehicle light fixture includes a plurality of light-emitting parts that emit light, The system comprises a plurality of reflectors located on the optical path from the light-emitting portion to the emission surface, and each of the light-emitting portions being provided in correspondence with the respective light-emitting portion. The vehicle lamp according to claim 1, characterized in that the reflective portion located on the outside is formed of a plurality of segmented reflective surfaces.

7. The vehicle lamp according to claim 6, further comprising a plurality of light-diffusing portions provided adjacent to each of the light-emitting portions on the side of the reflective portion in the light reflection direction.

8. The vehicle lamp according to claim 1, characterized in that the second optical axis intersects the first optical axis in front of the projection lens.

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