JP6659304B2 - Lens body, lens assembly and vehicle lamp - Google Patents

Description

  The present invention relates to a lens body, a lens assembly, and a vehicle lamp, and more particularly, to a lens body and a lens assembly used in combination with a light source, and a vehicle lamp including the same.

  DESCRIPTION OF RELATED ART Conventionally, the vehicle lamp which combined the light source and the lens body has been proposed (for example, refer to patent documents 1 and 2). In a vehicular lamp, light from a light source enters the inside of a lens body from an entrance portion of the lens body, and is partially reflected by a reflection surface of the lens body. The light is emitted. Thus, the light emitted in front of the lens body reversely projects the light source image formed near the focal point of the exit surface of the lens body, and includes a cutoff line defined by the front end of the reflection surface at the upper end edge. A light distribution pattern for low beam is formed.

JP-A-2004-241349 Japanese Patent No. 4068387

  By the way, in the above-described vehicle lighting device, an overhead (OH) light distribution pattern is formed above a cutoff line as light for irradiating a road sign or the like (hereinafter, referred to as overhead (OH) light). Have been done.

  For example, in the vehicle lamp described in Patent Document 1, a metal reflection film (reflection surface) is formed on the surface of a lens body by metal vapor deposition, and light reflected by the metal reflection film is emitted forward. (See FIG. 8 of cited document 1). However, when a metal reflection film is used for the reflection surface, a part of the light incident on the metal reflection film is absorbed, so that the reflectance on the reflection surface is reduced.

  On the other hand, in the vehicle lamp described in Patent Literature 2, a reflecting surface extending so as to be inclined downward and forward is provided on the translucent block, and the position of the lower end edge of the emission end surface of the translucent block is lowered. The light deflected and emitted from the emission end surface is emitted forward as additional irradiation light including upward light and downward light via a projection lens (see FIG. 13 of Reference 2). However, when this additional irradiation light is used as the OH light, the intensity of the upward light becomes too strong, and glare may be generated. Further, since the additional irradiation light includes upward light and downward light, the cutoff line of the light distribution pattern for low beam may not be clear and may be blurred.

  The present invention has been proposed in view of such conventional circumstances, a lens body and a lens assembly that can freely form an overhead light distribution pattern while preventing the occurrence of glare and blurring, It is another object of the present invention to provide a vehicular lamp provided with these.

In order to achieve the above object, according to the first aspect of the present invention, an incident portion, a reflecting surface, and an emitting surface are arranged in this order along a first reference axis extending in a horizontal direction, and light from a light source is provided. but the incident from the incident part inside the lens, after a part by the reflecting surface is reflected by the light to the lens outside from the output surface is emitted, thus defining the reflective surface above the edge A lens body configured to form a predetermined light distribution pattern including a cut-off line to be formed, wherein the lens body is provided to protrude downward from the reflection surface and transmits a part of light incident on the reflection surface. It has a light guide convex portion, and includes an overhead exit surface located in front of the light guide convex portion, and an overhead incident surface located below a focal point of the exit surface. Out of the light guide projection The emitted light is incident on the inside of the lens from the overhead incident surface, and is emitted from the exit surface to the outside of the lens, so that the light illuminated in front of the lens emits an overhead light distribution pattern above the cutoff line. Is formed, the light distribution amount of the overhead light distribution pattern is adjusted by the height of the overhead emission surface in the vertical direction, and the height of the overhead incidence surface in the vertical direction is adjusted by the height in the vertical direction. A lens body, wherein a height of the overhead light distribution pattern extending upward from a cutoff line is adjusted .

According to the first aspect of the present invention, a part of the light incident on the reflection surface is transmitted through the light guide convex portion, so that the light emitted from the overhead emission surface of the light guide convex portion to the outside of the light guide convex portion. After entering the inside of the lens from the incident surface for overhead, the light exits from the exit surface to the outside of the lens and becomes overhead (OH) light for forming a light distribution pattern for overhead. The OH light is light distributed by the overhead emission surface and the overhead incidence surface separately from the light forming the light distribution pattern including the cutoff line. Therefore, by adjusting the overhead emission surface and the overhead incidence surface, it is possible to freely form the overhead light distribution pattern while preventing the occurrence of glare, blurring, and the like.
According to the first aspect of the present invention, the amount of light distribution (light intensity) of the overhead light distribution pattern and the height (shape) of the overhead light distribution pattern can be easily determined by the overhead emission surface and the overhead incidence surface. Can be adjusted.

According to a second aspect of the present invention, in the lens body according to the first aspect, the overhead incident surface is formed as a surface extending downward from a focal point of the emission surface .

According to the second aspect of the present invention, since the light that has entered the inside of the lens from the overhead entrance surface passes below the focal point of the exit surface , the overhead light is separated from the light that forms the light distribution pattern including the cutoff line. The light distribution (luminous intensity distribution) of the OH light can be easily adjusted by the emission surface and the overhead incidence surface.

According to a third aspect of the present invention, in the lens body according to the second aspect, a focal point of the emission surface is set near a front end of the reflection surface.

According to the third aspect of the present invention, a predetermined light distribution pattern including a cutoff line defined by the front end of the reflection surface is formed on the upper end edge by reversely projecting the light source image formed near the focal point of the emission surface. be able to.

According to a fourth aspect of the present invention, an entrance, a reflection surface, and an exit surface are arranged in this order along a first reference axis extending in a horizontal direction, and light from a light source passes through a lens from the entrance. After the light enters the inside and is partially reflected by the reflection surface, light is emitted from the emission surface to the outside of the lens, so that a predetermined arrangement including a cutoff line defined by the reflection surface at the upper end edge is provided. A lens body configured to form an optical pattern, a first lens unit including the first incident surface, the reflective surface, and the first exit surface serving as the incident unit; a second incident surface and the exit surface And a second lens portion including a second exit surface, the surface shape of the first exit surface being adjusted so as to condense light emitted from the first exit surface in the first direction. And the second exit surface is perpendicular to the first direction. With respect to the direction, the surface shape is adjusted so as to condense the light emitted from the second emission surface, and the first lens portion is provided so as to protrude downward from the reflection surface, and is provided with the reflection surface. A light-guiding projection that transmits a portion of light incident on the surface, an overhead emission surface located in front of the light-guiding projection, and between the overhead emission surface and the first emission surface. And a light exiting from the overhead light exit surface to the outside of the light guide convex portion is incident on the inside of the lens from the overhead light incident surface, and the second light exit surface passes through the second light exit surface. The lens is configured so that light emitted to the front of the lens by being emitted to the outside of the lens unit forms an overhead light distribution pattern above the cutoff line. It is a body.

  According to the fourth aspect of the present invention, a part of the light incident on the reflection surface is transmitted through the light guide convex portion, so that the light emitted from the overhead emission surface of the light guide convex portion to the outside of the light guide convex portion. Is incident on the inside of the lens from the incident surface for overhead, is emitted from the second exit surface to the outside of the second lens unit, and becomes overhead (OH) light for forming the light distribution pattern for overhead. The OH light is light distributed by the overhead emission surface and the overhead incidence surface separately from the light forming the light distribution pattern including the cutoff line. Therefore, by adjusting the overhead emission surface and the overhead incidence surface, it is possible to freely form the overhead light distribution pattern while preventing the occurrence of glare, blurring, and the like.
In the invention described in claim 4, the first exit surface of the first lens unit is mainly in the first direction (for example, in the horizontal direction or in the first lens unit). It has a function of condensing light in the vertical direction, and a function of condensing light in a second direction (for example, a vertical direction or a horizontal direction) in which the second emission surface of the second lens portion is mainly orthogonal to the first direction. Thus, it is possible to form a predetermined light distribution pattern condensed in the horizontal direction and the vertical direction while decomposing the light condensing function between the first light exit surface and the second light exit surface.

According to a fifth aspect of the present invention, in the lens body according to the fourth aspect, there is provided a connecting portion for connecting the first lens portion and the second lens portion, and the connecting portion is provided on the first emission surface. The first lens unit and the second lens unit are connected in a state where a space is formed between the first lens unit and the second incident surface.

According to the fifth aspect of the present invention, it is possible to obtain a lens body in which the first lens portion and the second lens portion are integrally formed via the connecting portion.
According to a sixth aspect of the present invention, in the lens body according to the fourth or fifth aspect, the overhead incident surface includes the first exit surface, the second incident surface of the second lens unit, and the second exit surface. It is characterized in that it is located below the combined focal point of the combined lens composed of a plane.
According to the sixth aspect of the present invention, it is possible to form a predetermined light distribution pattern including a cutoff line defined by the reflection surface on the upper edge by reversely projecting the light source image formed in the vicinity of the combined focal point.
According to a seventh aspect of the present invention, in the lens body according to the sixth aspect, the incident surface for overhead is located on an extension extending vertically from a combined focal point of the combined lens. And
According to the seventh aspect of the present invention, since the light incident on the inside of the lens from the overhead entrance surface passes below the combined focal point, the overhead exit surface is provided separately from the light forming the light distribution pattern including the cutoff line. Further, the light distribution (luminous intensity distribution) of the OH light can be easily adjusted by the incident surface for overhead.

According to an eighth aspect of the present invention, in the lens body according to any one of the first to seventh aspects, the reflecting surface is inclined forward and obliquely downward with respect to the first reference axis. It is characterized by.

In the invention according to claim 8 , the utilization efficiency of the light reflected on the reflection surface is increased while suppressing a part of the light reflected on the reflection surface from becoming light (stray light) traveling in a direction not entering the emission surface. be able to.

  According to a ninth aspect of the present invention, there is provided the lens body according to any one of the first to eighth aspects, wherein a plurality of the lens bodies are arranged, and each of the light-emitting surfaces is combined, so that a predetermined A lens combination comprising a continuous emission surface extending linearly in a direction.

  According to the ninth aspect of the present invention, it is possible to provide a visually appealing lens assembly having a sense of unity and extending linearly in a predetermined direction (for example, a horizontal direction or a vertical direction).

  According to a tenth aspect of the present invention, there is provided a vehicle comprising: the lens body according to any one of the first to eighth aspects; and a light source that irradiates light to the incident part of the lens body. It is a lighting fixture.

  According to the tenth aspect of the present invention, it is possible to provide a vehicular lamp including a lens body that can freely form an overhead light distribution pattern while preventing the occurrence of glare and blur.

  According to an eleventh aspect of the present invention, there is provided a lens assembly according to the ninth aspect, and a plurality of light sources that irradiate each of the plurality of lens bodies constituting the lens assembly with light toward each of the incident portions. It is a vehicle lamp characterized by comprising:

  According to the eleventh aspect of the present invention, it is possible to provide a vehicular lamp provided with an attractive-looking lens assembly that extends in a line in a predetermined direction (for example, a horizontal direction or a vertical direction).

  As described above, according to the present invention, a lens body and a lens assembly capable of freely forming an overhead light distribution pattern without generating glare, blur, and the like, and a vehicular lamp provided with these are provided. It is possible to provide.

FIG. 1 is a side view illustrating a schematic configuration of a vehicle lamp including a lens body according to a first embodiment of the present invention. FIG. 2 is an optical path diagram showing an optical path of light incident on a lens body from a light source of the vehicle lamp shown in FIG. 1. FIG. 2 is a schematic diagram for explaining a shape of a front end of a reflection surface in the lens body shown in FIG. 1. It is a light intensity distribution diagram which shows the LB light distribution pattern formed on the surface of the virtual vertical screen by LB light. It is a light intensity distribution figure which shows the light distribution pattern for OH formed on the surface of the virtual vertical screen by OH light. It is a light intensity distribution figure which shows the light distribution pattern formed on the surface of the virtual vertical screen by LB light and OH light. It is a side view showing the schematic structure of the vehicular lamp provided with the lens body concerning a 2nd embodiment of the present invention. FIG. 8 is an optical path diagram showing an optical path of light incident on a lens body from a light source of the vehicle lamp shown in FIG. 7. FIG. 8 is a perspective view illustrating an example of a shape of a first emission surface, a second incidence surface, and a second emission surface constituting the lens body illustrated in FIG. 7. It is a figure showing the schematic structure of the vehicular lamp provided with lens combination concerning a 3rd embodiment of the present invention. It is a figure showing the schematic structure of the vehicular lamp provided with lens combination concerning a 4th embodiment of the present invention. FIG. 4 is a luminous intensity distribution diagram showing an OH light distribution pattern formed on a surface of a virtual vertical screen in the first embodiment. FIG. 11 is a luminous intensity distribution diagram showing an OH light distribution pattern formed on a surface of a virtual vertical screen in a second embodiment. FIG. 14 is a luminous intensity distribution diagram showing a light distribution pattern for OH formed on a surface of a virtual vertical screen in a third embodiment. It is a light intensity distribution diagram which shows the OH light distribution pattern formed on the surface of the virtual vertical screen in the 4th Example.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Note that, in the drawings used in the following description, in order to make each component easy to see, the scale of the dimensions may be different depending on the component, and the dimensional ratio of each component is not necessarily the same as the actual one. Absent.

(First embodiment)
First, a vehicle lamp 10 including a lens body 12 shown in FIGS. 1 and 2 will be described as a first embodiment of the present invention. FIG. 1 is a side view showing a schematic configuration of the vehicular lamp 10. FIG. 2 is an optical path diagram showing an optical path of light L incident on the lens body 12 from the light source 14 of the vehicle lamp 10. In the drawings shown below, an XYZ orthogonal coordinate system is set, the X-axis direction is the front-rear direction of the vehicle lamp 10 (lens body 12), the Y-axis direction is the left-right direction of the vehicle lamp 10 (lens body 12), The Z-axis direction is defined as the up-down direction of the vehicle lamp 10 (lens body 12).

  As shown in FIGS. 1 and 2, the vehicular lamp 10 includes a lens body 12 to which the present invention is applied, and a light source 14 that irradiates light L toward an incident surface 12 a that is an incident portion of the lens body 12. ing.

  The lens body 12 is a polyhedral lens body having a shape extending along a first reference axis AX1 extending in the horizontal direction (X-axis direction). Specifically, the lens body 12 includes, in a first reference axis AX1 extending in the horizontal direction, an entrance surface 12a, a reflection surface 12b, a front end 12c of the reflection surface 12b, and an emission surface 12d in this order. It has the configuration arranged in. The lens body 12 may be made of a material having a higher refractive index than air, such as a transparent resin such as polycarbonate or acrylic, or glass. When a transparent resin is used for the lens body 12, the lens body 12 can be formed by injection molding using a mold.

  The incident surface 12a is located at the rear end (rear surface) of the lens body 12, and refracts light L from a light source 14 (accurately, a reference point F in optical design) disposed near the incident surface 12a. Thus, a lens surface (for example, a free-form surface that is convex toward the light source 14) that enters the inside of the lens body 12 is configured.

At least in the vertical direction (Z-axis direction), the light L from the light source 14 disposed in the vicinity of the incident surface 12a is close to the center (reference point F) of the light source 14 and the vicinity of the front end 12c of the reflecting surface 12b. passes through the point (focal point F _12d of the exit surface 12d _side), and, as focused on the second reference axis AX2 towards inclined forwardly obliquely downward with respect to the first reference axis AX1, the surface The shape has been adjusted.

  Further, in the horizontal direction (Y-axis direction), the light L from the light source 14 incident on the inside of the lens body 12 is gathered toward the front end 12c of the reflection surface 12b toward the first reference axis AX1 in the horizontal direction (Y-axis direction). The surface shape is configured to illuminate. The incident surface 12a has a surface shape such that the light from the light source 14 incident on the inside of the lens body 12 is parallel to the first reference axis AX1 in the horizontal direction (Y-axis direction). May be configured. Further, the incident portion is not limited to such an incident surface 12a, and an incident concave portion may be provided on the rear end side of the lens body 12, and the light source 14 may be arranged inside the incident concave portion.

  The reflecting surface 12b has a planar shape extending forward (in the + X-axis direction) from the lower edge of the incident surface 12a. The reflecting surface 12b reflects the light L1 incident on the reflecting surface 12b of the light L from the light source 14 incident on the inside of the lens body 12 toward the front exit surface 12d inside the lens body 12 (total reflection). reflect. Thereby, in the lens body 12, since the reflection surface 12b can be formed without using a metal reflection film formed by metal evaporation, it is possible to prevent an increase in cost and a decrease in reflectance.

  The reflection surface 12b is inclined forward and obliquely downward with respect to the first reference axis AX1. In this case, it is possible to increase the use efficiency of the light reflected by the reflection surface 12b while suppressing a part of the light L1 reflected by the reflection surface 12b from becoming light (stray light) traveling in a direction not entering the emission surface 12d. it can.

  The front end 12c of the reflection surface 12b defines a cutoff line for the light L that has entered the lens body 12 from the light source 14.

  Here, the shape of the front end 12c of the reflection surface 12b will be described with reference to FIGS. FIG. 3A is a schematic diagram illustrating a front view shape (a shape when viewed from the incident surface 12a side (+ X axis direction)) of the front end 12c of the reflection surface 12b. FIGS. 3B to 3D are schematic diagrams illustrating an example of a side view shape (a shape when viewed from the side surface (+ Y axis direction)) of the front end portion 12c of the reflection surface 12b.

  The front end 12c of the reflection surface 12b is formed to extend in the left-right direction (Y-axis direction) of the lens body 12 at the front end of the reflection surface 12b, as shown in FIGS. 1, 2 and 3A. ing. Specifically, the front end portion 12c of the reflection surface 12b is connected to a side e1 corresponding to the left horizontal cutoff line, a side e2 corresponding to the right horizontal cutoff line, and between the left horizontal cutoff line and the right horizontal cutoffline. It has a stepped shape including a side e3 corresponding to the oblique cut-off line to be connected.

  The shape of the front end 12c of the reflection surface 12b shown in FIG. 3A illustrates a case where the vehicle is traveling on the right side. On the other hand, when the vehicle is traveling on the left side, the shape of the front end 12c of the reflection surface 12b is a stepped shape in which the height of the side e1 corresponding to the left horizontal cutoff line and the side e2 corresponding to the right horizontal cutoff line are reversed. . Further, the shape of the front end 12c of the reflection surface 12b is not limited to these shapes, and may be a shape consisting of only sides corresponding to a horizontal cutoff line extending linearly in the horizontal direction.

  As shown in FIG. 3B, the front end 12c of the reflection surface 12b has a shape that extends linearly upward (in the + Z-axis direction) from the front end of the reflection surface 12b, as shown in FIG. . Further, as shown in FIG. 3 (c), the shape of the front end 12c of the reflection surface 12b in a side view may be a shape extending linearly obliquely upward and forward as shown in FIG. 3 (c). Thus, the shape may be curved and extend obliquely upward and forward.

  Note that the front end 12c of the reflection surface 12b is not necessarily limited to the above-described shape, and can be appropriately changed as long as a cutoff line can be defined. Further, the front end 12c of the reflection surface 12b is not limited to the above-described stepped shape, but may be formed by a groove corresponding to a cutoff line.

The exit surface 12d is located at the front end (front surface) of the lens body 12, as shown in FIG. 1 and FIG. 2, and out of the light L from the light source 14 incident inside the lens body 12, the exit surface 12d Light L2 traveling toward the light (hereinafter referred to as straight light) L2 and light L1 reflected at the reflection surface 12b and traveling toward the emission surface 12d (hereinafter referred to as reflected light) L1 are provided outside the lens body 12. (For example, a free-form surface that is convex forward). The focal _{F 12d} of the exit surface 12d side is set to the front end portion 12c vicinity of the reflecting surface 12b (e.g., near the center in the lateral direction of the front end portion 12c of the reflecting surface 12b (Y axis direction)).

  As the light source 14, for example, a semiconductor light emitting element such as a white light emitting diode (LED) or a white laser diode (LD) can be used. In the present embodiment, one white LED is used. Note that the type of the light source 14 is not particularly limited, and a light source other than the above-described semiconductor light emitting element may be used. Further, the number of light sources 14 is not limited to one and may be plural.

  The light source 14 has a light emitting surface directed obliquely downward and forward, that is, in a state where the optical axis of the light source 14 coincides with the second reference axis AX2, in the vicinity of the entrance surface 12a of the lens body 12 (the reference point F). (Nearby). Further, the light source 14 is in a state where the optical axis of the light source 14 does not coincide with the second reference axis AX2 (for example, the optical axis of the light source 14 is arranged in parallel with the first reference axis AX1). 12 may be arranged near the incident surface 12a (near the reference point F).

  In the vehicular lamp 10 of the present embodiment, of the light L from the light source 14 incident on the interior of the lens body 12 from the incident surface 12a, the reflected light that is reflected by the reflective surface 12b and then proceeds toward the emission surface 12d. L <b> 1 and the straight light L <b> 2 traveling toward the emission surface 12 d are emitted from the emission surface 12 d to the outside of the lens body 12.

As a result, light (hereinafter, referred to as low beam (LB) light L _LOW ) emitted in front of the lens body 12 reversely projects a light source image formed near the focal point F _12d on the emission surface 12d side, and the upper end is formed. A predetermined low beam (LB) light distribution pattern including a cutoff line defined by the front end 12c of the reflection surface 12b is formed on the edge.

Here, FIG. 4 shows a light source image when the LB light L _LOW is projected on a virtual vertical screen directly facing the lens body 12 by simulation. FIG. 4 is a luminous intensity distribution diagram showing the LB light distribution pattern P _LOW formed on the surface of the virtual vertical screen. In addition, the virtual vertical screen is disposed about 25 m ahead of the emission surface 12 d of the lens body 12.

The light source image based on the LB light L _LOW is for LB including cut-off lines CL1 to CL3 corresponding to the respective sides e1 to e3 of the front end 12c of the reflection surface 12b at the upper end edge on the surface of the virtual vertical screen shown in FIG. A light distribution pattern P _LOW is formed.

The degree of diffusion of the LB light distribution pattern P _{LOW in} the horizontal direction (Y-axis direction) is adjusted by adjusting the surface shape of the incident surface 12a (for example, the curvature of the incident surface 12a in the horizontal direction (Y-axis direction)). Can be adjusted freely. Further, the degree of diffusion of the LB light distribution pattern P _{LOW in} the horizontal direction (Y-axis direction) and the vertical direction (Z-axis direction) can be freely adjusted by adjusting the surface shape of the emission surface 12d. is there.

  By the way, as shown in FIGS. 1 and 2, the lens body 12 of the present embodiment has the light guide convex portion 16 that transmits a part of the light L1 incident on the reflection surface 12b. The light guide convex portion 16 is provided so as to protrude downward (-Z-axis direction) from the reflection surface 12b. The light guide convex portion 16 can be formed integrally with the lens body 12. The light guide convex portion 16 is formed of a material having the same material (refractive index) as the lens body 12 or a material having a higher refractive index than the lens body 12 separately from the lens body 12 and attached to the reflection surface 12b. It is also possible.

The lens body 12 of the present embodiment includes an overhead (OH) emission surface 16a located on the front surface of the light guide convex portion 16, and an overhead (OH) incidence surface 12e located below the focal point F _12d of the emission surface 12d. And The OH emission surface 16a and the OH incidence surface 12e face each other with a space K therebetween.

  The OH emission surface 16a is formed by the front surface of the light guide convex portion 16, and has a planar shape extending linearly obliquely rearward and downward. The OH emission surface 16a may have a planar shape that extends linearly downward (in the −Z-axis direction) from the reflection surface 12b. Further, the surface shape of the OH emission surface 16a is not limited to such a planar shape, but may be a curved surface curved in a horizontal direction (Y-axis direction), a curved surface curved in a vertical direction (Z-axis direction), or a horizontal surface. It is also possible to form a curved surface curved in the direction (Y-axis direction) and the vertical direction (Z-axis direction).

The OH incident surface 12e has a planar shape extending downward (-Z-axis direction) from the tip of the reflection surface 12b. The OH incident surface 12e is located on an extension line V extending in the vertical direction (Z-axis direction) from the focal point F _12d on the exit surface 12d side.

  In the vehicle lamp 10 of the present embodiment, after a part of the light L (hereinafter, referred to as transmitted light) L3 of the light L incident on the reflection surface 12b passes through the light guide convex part 16, the OH emission surface 16a. Then, the transmitted light L3 is emitted to the outside (space K) of the light guide projection 16. Then, while passing through the space K, the transmitted light L3 enters the inside of the lens body 12 from the OH incident surface 12e, and is emitted from the emission surface 12d to the outside of the lens body 12.

Accordingly, the light (hereinafter, referred to as overhead (OH) light) L _OH irradiated in front of the lens body 12 forms a light distribution pattern for overhead (OH). The OH light L _OH is emitted from the emission surface 12d to the outside of the lens body 12 upward (in the + Z-axis direction) more than the LB light L _LOW .

Here, FIG. 5 shows a light source image when OH light L _OH is projected on a virtual vertical screen directly facing the lens body 12 by simulation. FIG. 5 is a luminous intensity distribution diagram showing the _OH light distribution pattern P _OH formed on the surface of the virtual vertical screen.

The light source image by the OH light L _OH forms an _OH light distribution pattern P _OH on the surface of the virtual vertical screen shown in FIG. Further, the OH light distribution pattern P _OH shown in FIG. 5 is located above the cutoff lines CL1 to CL3 of the LB light distribution pattern P _LOW shown in FIG.

In the vehicle lighting device 10, the light distribution pattern in which the LB light distribution pattern P _LOW and the OH light distribution pattern P _OH are combined by the LB light L _LOW and the OH light L _OH emitted in front of the lens body 12 described above. To form

Here, FIG. 6 shows a light source image when LB light L _LOW and OH light L _OH are projected on a virtual vertical screen directly facing the lens body 12 by simulation. FIG. 6 is a luminous intensity distribution diagram showing the light distribution pattern P formed on the surface of the virtual vertical screen.

The light source image by the LB light L _LOW and the OH light L _{OH is} a light distribution in which the LB light distribution pattern P _LOW and the OH light distribution pattern P _OH are combined (superimposed) on the surface of the virtual vertical screen shown in FIG. A pattern P is formed.

The OH light L _OH forming the OH light distribution pattern P _OH is distributed by the OH emission surface 16a and the OH incidence surface 12e separately from the LB light L _LOW forming the LB light distribution pattern P _LOW. Light.

Therefore, in the lens body 12 of the present embodiment, the OH light distribution pattern P _OH can be freely formed while preventing the occurrence of glare, blur, and the like by adjusting the OH emission surface 16a and the OH incidence surface 12e. It is possible.

Specifically, the width and height, luminous intensity, light distribution position, and the like of the _OH light distribution pattern P _OH can be freely set. The parameters for changing the _OH light distribution pattern P _OH include, for example, the following (1) to (7).
(1) Position of the light guide convex portion 16 (length from the focal point F _12d to the OH emission surface 16a)
(2) Length of the light guide protrusion 16 (length in the front-rear direction (X-axis direction) of the light guide protrusion 16)
(3) Width of the light guide protrusion 16 (length of the light guide protrusion 16 in the horizontal direction (Y-axis direction))
(4) Angle of OH emitting surface 16a (angle formed with respect to vertical direction (Z-axis direction))
(5) Height of Light Guide Convex Portion 16 (Length of OH Outgoing Surface 16a in the Vertical Direction (Z-Axis Direction))
(6) Curvature of OH emitting surface 16a (curvature when curved in horizontal direction (Y-axis direction))
(7) Height of OH incident surface 12e (distance in vertical direction (Z-axis direction) from focal point F _12d to lower end of OH incident surface 12e)

In the lens body 12 of the present embodiment, as shown in FIG. 1, the OH light distribution is determined by the height (height of the light guide projection 16) t ₁ of the OH emission surface 16 a in the vertical direction (Z-axis direction). adjust the light distribution amount of the pattern _{P OH} (light intensity), the vertical direction (Z-axis direction) of the (heights of OH for incident surface 12e) of the OH for the incident surface 12e by _{t 2,} extending from the cutoff line above It is preferable to adjust the height (shape) of the _OH light distribution pattern P _OH .

In this case, the OH for exit surface 16a and OH for incident surface 12e, and OH light distribution pattern _{P OH} distribution amount (light intensity), the height of the OH light distribution pattern _{P OH} (shape) and easily adjusted can do.

Further, as shown in FIGS. 1 and 2, the OH incident surface 12e is preferably located on an extension line V extending in the vertical direction (Z-axis direction) from the above-described focal point F _12d on the exit surface 12d side. In this case, since the light L3 incident from OH for entrance plane 12e to the inside of the lens body 12 passes below the focal point _{F 12d} of the exit surface 12d side, LO light _{L LOW} for forming a light distribution pattern _{P LOW} for LO Apart from this, the light distribution (luminous intensity distribution) of the OH light L _OH can be easily adjusted by the OH emitting surface 16a and the OH incident surface 12e.

The OH incident surface 12e may be located in front of the extension line V (on the + X axis side). In this case, the light L3 that has entered the inside of the lens body 12 from the OH incident surface 12e passes below the focal point F _12d on the exit surface 12d side, but the OH incident surface 12e is located on the extension line V. As compared with the case, the light distribution adjustment of the OH light L _OH by the OH emitting surface 16a and the OH incident surface 12e becomes more complicated.

On the other hand, when the OH incident surface 12e is located behind the extension line V (on the −X axis side), a part of the light L3 that has entered the inside of the lens body 12 from the OH incident surface 12e is on the exit surface 12d side. It is conceivable that the _{light beam} passes through the focal point F _12d or above the focal point F _12d (in the + Z axis direction). In this case, the light distribution (luminous intensity distribution) of the LB light L _LOW forming the LB light distribution pattern P _LOW may be affected, which is not preferable.

  Among the surfaces constituting the lens body 12, a surface 12f connecting the upper edge of the incident surface 12a and the upper edge of the output surface 12d, a lower edge of the OH incident surface 12e, and a lower edge of the output surface 12d. Are not particularly described, but these surfaces 12f and 12g have an adverse effect (for example, shield) on the light L1 to L4 passing through the inside of the lens body 12 described above. It is possible to design freely within a range that does not exist.

(Second embodiment)
Next, a vehicle lamp 10A having a lens body 12A shown in FIGS. 7 and 8 will be described as a second embodiment of the present invention. FIG. 7 is a side view showing a schematic configuration of the vehicle lamp 10A. FIG. 8 is an optical path diagram showing an optical path of light L incident on the lens body 12A from the light source 14 of the vehicle lamp 10A. In the following description, the same parts as those of the vehicular lamp 10 (lens body 12) will not be described, and will be denoted by the same reference numerals in the drawings.

  As shown in FIGS. 7 and 8, the vehicle lamp 10 includes a lens body 12A to which the present invention is applied, and a light source 14 that irradiates light L toward an incident surface 12a of the lens body 12A. That is, the vehicle lamp 10 has a configuration in which a lens body 12A is provided instead of the lens body 12 included in the vehicle lamp 10.

  The lens body 12A has a first lens portion 12A1 including a first incidence surface 12a, a reflection surface 12b, and a first emission surface 12A1a, and a second lens portion 12A2 including a second incidence surface 12A2a and a second emission surface 12A2b. are doing. Further, the first lens portion 12A1 and the second lens portion 12A2 are connected by a connecting portion 12A3.

  The lens body 12A is a polyhedral lens body having a shape extending along a first reference axis AX1 extending in the horizontal direction (X-axis direction). Specifically, the lens body 12 includes a first incident surface 12a, a reflecting surface 12b, a first exit surface 12A1a, a second incident surface 12A2a, and a first reference axis AX1 extending in the horizontal direction. The two emission surfaces 12A2b are arranged in this order. The first light exit surface 12A1a and the second light incident surface 12A2a are opposed to each other with a space S surrounded by the first lens portion 12A1, the second lens portion 12A2, and the connecting portion 12A3 interposed therebetween.

  Among the surfaces constituting the lens body 12A, the first incident surface 12a, the reflecting surface 12b, and the front end 12c of the reflecting surface 12b are located on the incident surface 12a, the reflecting surface 12b, and the front end 12c of the reflecting surface 12b of the lens body 12. This is the equivalent side. On the other hand, among the surfaces constituting the lens body 12A, the first exit surface 12A1a and the second entrance surface 12A2a constitute different surfaces from the lens body 12. FIGS. 9A and 9B show the shapes of the first exit surface 12A1a, the second entrance surface 12A2a, and the second exit surface 12A2b.

  The first emission surface 12A1a is located at the front end (front surface) of the first lens portion 12A1, and emits light L4 emitted from the first emission surface 12A1a in the horizontal direction (Y-axis direction) that is the first direction. The surface shape is adjusted so as to converge light. More specifically, as shown in FIG. 9A, the first emission surface 12A1a is configured as a semi-cylindrical lens surface whose cylindrical axis extends in the vertical direction (Z-axis direction). Further, the focal line of the first emission surface 12A1a extends in the vertical direction (Z-axis direction) near the front end 12c of the reflection surface 12b.

  The second incident surface 12A2a is located at the rear end (rear surface) of the second lens portion 12A2, and forms a plane as a surface on which the light L4 emitted from the first emission surface 12A1a enters. The shape of the second incident surface 12A2a is not limited to such a flat surface, but may be a curved surface (lens surface).

  The second exit surface 12A2b is a surface corresponding to the exit surface 12d of the lens body 12, is located at the front end (front surface) of the second lens portion 12A2, and is in the vertical direction (Z-axis direction) that is the second direction. The surface shape is adjusted so that the light L4 emitted from the second emission surface 12A2b is collected. Specifically, as shown in FIG. 9A, the second emission surface 12A2a is configured as a semi-cylindrical lens surface whose column axis extends in the horizontal direction (Y-axis direction). Further, the focal line of the second emission surface 12A2b extends in the horizontal direction (Y-axis direction) near the front end 12c of the reflection surface 12b.

As shown in FIGS. 7 and 8, the combined focal point F _12A4 of the combined lens 12A4 including the first exit surface 12A1a and the second lens portion 12A2 (the second entrance surface 12A2a and the second exit surface 12A2b) (the exit surface described above). corresponding to the focal point _{F 12d} and 12d side.) is set to the front end portion 12c vicinity of the reflecting surface 12b (e.g., near the center in the lateral direction of the front end portion 12c of the reflection surface 12b).

  The connection part 12A3 connects the upper part between the first lens part 12A1 and the second lens part 12A2 with the space S interposed therebetween. The lens body 12A can be formed by injection molding using a mold using the same material as the lens body 12 described above.

  Here, the first exit surface 12A1a and the second entrance surface 12A2a are each formed with a draft angle (also referred to as a draft angle) in accordance with the direction (+ Z-axis direction) in which the lens body 12A is removed from the mold after the molding of the lens body 12A. ) Α and β are set. It is desirable to set the draft angles α and β to approximately 2 ° or more. Thereby, the lens body 12A can be die-cut at the time of molding, and can be manufactured inexpensively by one-time die-cutting (without using a slide).

  In the lens body 12A, the direction of the light L4 emitted from the second emission surface 12A2b becomes obliquely upward with respect to the first reference axis AX1 by setting the above-described draft angles α and β. The surface shape of the second exit surface 12A2b is adjusted so as not to cause glare (specifically, to be parallel to the first reference axis AX1).

Incidentally, the lens body 12A of the present embodiment has the light guide convex portion 16 that transmits a part of the light L1 incident on the reflection surface 12b, similarly to the lens body 12. In addition, the lens body 12A includes an OH emission surface 16a located in front of the light guide convex portion 16, and an OH incidence surface 12e located below the combined focal point _F12A4 .

  In the vehicle lamp 10A having the above-described configuration, similarly to the vehicle lamp 10, the light L from the light source 14 incident on the inside of the lens body 12A from the incident surface 12a is reflected on the reflection surface 12b. Thereafter, the light (reflected light) L1 traveling toward the first emission surface 12A1a and the light (straight light) L2 traveling toward the first emission surface 12A1a are converted from the first emission surface 12A1a to the first emission surface 12A1a as the light L4. The light is emitted to the outside (space S) of the one lens portion 12A1. Then, while passing through the space S, the light L4 enters the inside of the second lens portion 12A2 from the second incident surface 12A2a, and is emitted from the second emission surface 12A2b to the outside of the second lens portion 12A2. .

Accordingly, the light (LB light) L _LOW irradiated in front of the lens body 12A reversely projects the light source image formed in the vicinity of the combined focal point F _12A4 , and is defined on the upper edge by the front end 12c of the reflection surface 12b. A predetermined low beam (LB) light distribution pattern (not shown) including the cut-off line to be formed is formed.

  In the vehicle lamp 10A of the present embodiment, a part of the light L (transmitted light) L3 of the light L incident on the reflection surface 12b is transmitted through the light guide convex portion 16 and then guided from the OH emission surface 16a. The transmitted light L3 is emitted to the outside (space K) of the light convex portion 16. Then, the transmitted light L3 enters the inside of the lens body 12A from the incident surface for OH 12e while passing through the space K, and then exits from the first exit surface 12A1a to the outside (space S) of the first lens portion 12A1. Is done. The transmitted light L3 enters the second lens portion 12A2 from the second incident surface 12A2a while passing through the space S, and is emitted from the second emission surface 12A2b to the outside of the second lens portion 12A2. You.

As a result, the light (OH light) L _OH emitted in front of the lens body 12A forms a light distribution pattern (not shown) for overhead (OH).

The OH light L _OH forming the OH light distribution pattern is light distributed by the OH emission surface 16a and the OH incidence surface 12e separately from the LB light L _LOW forming the LB light distribution pattern.

  Therefore, in the lens body 12A of the present embodiment, similarly to the lens body 12, by adjusting the OH emission surface 16a and the OH incidence surface 12e, the OH light distribution can be prevented while preventing the occurrence of glare and blur. It is possible to freely form a pattern. Specifically, the width, height, luminous intensity, light distribution position, and the like of the OH light distribution pattern can be freely set.

  In the lens body 12A of the present embodiment, of the first lens portion 12A1 and the second lens portion 12A2, the first emission surface 12A1a of the first lens portion 12A1 condenses mainly in the horizontal direction (Y-axis direction). The second exit surface 12A2b of the second lens portion 12A2 has a function of condensing light mainly in the vertical direction (Z-axis direction), so that the first exit surface 12A1a and the second exit surface 12A2b It is possible to form a predetermined light distribution pattern condensed in the horizontal direction and the vertical direction while decomposing the light condensing function.

  Further, in the lens body 12A of the present embodiment, similarly to the lens body 12, the OH distribution is determined by the height (height of the light guide convex portion 16) of the OH emission surface 16a in the vertical direction (Z-axis direction). The light distribution (light intensity) of the light pattern is adjusted, and the OH distribution extending upward from the cutoff line is determined by the height (the height of the OH incident surface 12e) in the vertical direction (Z-axis direction) of the OH incident surface 12e. It is preferable to adjust the height (shape) of the light pattern.

  In this case, the light distribution amount (light intensity) of the OH light distribution pattern and the height (shape) of the OH light distribution pattern can be easily adjusted by the OH emission surface 16a and the OH incidence surface 12e. .

Further, in the lens body 12A of the present embodiment, similarly to the lens body 12, the OH incident surface 12e is placed on an extension (not shown) extending in the vertical direction (Z-axis direction) from the above-described composite focal point _F12A4 . Is preferably located. In this case, the light L3 that has entered the inside of the first lens unit 12A1 from the OH incident surface 12e passes below the combined focal point _F12A4 , and thus is separate from the LO light L _LOW that forms the LO light distribution pattern. The light distribution (luminous intensity distribution) of the OH light L _OH can be easily adjusted by the OH emitting surface 16a and the OH incident surface 12e.

  In the lens body 12A, as shown in FIG. 9A, the first exit surface 12A1a of the first lens portion 12A1 has a function of condensing light in the horizontal direction (Y-axis direction), and the second lens Although the second emission surface 12A2b of the portion 12A2 has a function of condensing light in the vertical direction (Z-axis direction), the configuration may be reversed. That is, in the lens body 12A, as shown in FIG. 9B, the function of the first exit surface 12A1a of the first lens portion 12A1 to condense light in the vertical direction (Z-axis direction) (when the cylindrical axis is in the horizontal direction (Y-axis direction)). (A semi-cylindrical lens surface extending in the axial direction), and the second light exit surface 12A2b of the second lens portion 12A2 condenses light in the horizontal direction (Y-axis direction) (when the cylindrical axis is in the vertical direction (Z-axis direction)). (A lens surface) having a semi-cylindrical shape extending in the direction (1).

(Third embodiment)
Next, a vehicle lamp 20 including a lens assembly 22 shown in FIGS. 10A and 10B will be described as a third embodiment of the present invention. FIG. 10A is a front view of the lens assembly 22 viewed from the light source 14 side. FIG. 10A is a top view illustrating the configuration of the vehicular lamp 20. In the following description, the same parts as those of the vehicular lamp 10 (lens body 12) will not be described, and will be denoted by the same reference numerals in the drawings.

  As shown in FIGS. 10A and 10B, the vehicular lamp 20 includes a lens assembly 22 to which the present invention is applied and a plurality of the lens bodies 12 constituting the lens assembly 22. A plurality of light sources 14 for irradiating the light L toward the incident surface 12a are provided.

  That is, the vehicle lamp 20 has a configuration in which a plurality of vehicle lamps 20 (a plurality of lens bodies 12A) are arranged in a row in the horizontal direction (Y-axis direction). The lens assembly 22 has a continuous emission surface 12D extending linearly in the horizontal direction (Y-axis direction) by coupling the respective emission surfaces 12d in a state where a plurality of the lens bodies 12 are arranged. .

  In the vehicle lighting device 20 of the present embodiment, the appearance of the lens assembly 22 having a sense of unity extending in a line shape in the horizontal direction can improve the design.

  Note that the lens assembly 22 is not limited to the one in which the plurality of lens bodies 12 are integrally formed, but may be formed by forming the plurality of lens bodies 12 separately and holding them on a holding member such as a lens holder. It is also possible to form an integral structure.

(Fourth embodiment)
Next, as a fourth embodiment of the present invention, a vehicle lamp 20A including a lens assembly 22A shown in FIGS. 11A and 11B will be described. FIG. 11A is a front view of the lens assembly 22A viewed from the light source 14 side. FIG. 11A is a top view illustrating the configuration of the vehicle lamp 20A. In the following description, the same parts as those of the vehicle lamp 10A (lens body 12A) will not be described, and will be denoted by the same reference numerals in the drawings.

  As shown in FIGS. 11A and 11B, the vehicle lighting device 20A includes a lens assembly 22A to which the present invention is applied and a plurality of the lens bodies 12A forming the lens assembly 22A. A plurality of light sources 14 for irradiating the light L toward the first incident surface 12a are provided.

  That is, the vehicle lamp 20A has a configuration in which a plurality of vehicle lamps 10A (a plurality of lens bodies 12A) are arranged in a row in the horizontal direction (Y-axis direction). The lens assembly 22A has a continuous emission surface 12A2B that extends in a horizontal direction (Y-axis direction) by joining the second emission surfaces 12A2b in a state where a plurality of the lens bodies 12A are arranged. ing.

  In the vehicle lamp 20A of the present embodiment, the appearance of the lens assembly 22A having a sense of unity and extending in a line shape in the horizontal direction can be improved in design.

  It should be noted that the lens assembly 22A is not limited to one in which the plurality of lens bodies 12A are integrally formed, but may be formed by separately forming the plurality of lens bodies 12A and then holding these in a holding member such as a lens holder. It is also possible to form an integral structure.

Note that the present invention is not necessarily limited to the first to fourth embodiments, and various changes can be made without departing from the spirit of the present invention.
For example, the lens body 12 has a configuration in which the above-described one light guide convex portion 16 is arranged, but has a configuration in which a plurality of (two in this example) light guide convex portions 16 are arranged. Is also possible.

  In this case, a plurality of OH lights can be formed by the plurality of light guide projections 16. Then, it is possible to freely form the OH light distribution pattern while preventing the occurrence of glare, blur, and the like by using the plurality of OH lights.

  In addition, also in the said lens body 12A, it is not restricted to the structure which arrange | positioned one light guide convex part 16 mentioned above, and can be set as the structure in which several light guide convex parts 16 were arrange | positioned. Further, by combining the lens bodies 12 and 12A on which the plurality of light guide projections 16 are arranged, it is possible to form the lens combined bodies 22 and 22A.

  Hereinafter, the effects of the present invention will be made clearer by examples. It should be noted that the present invention is not limited to the following embodiments, and can be implemented with appropriate changes within the scope of the present invention.

(First embodiment)
In the first embodiment, the light source image when the OH light L _OH is projected on the virtual vertical screen directly facing the lens body 12 by the simulation is expressed by (3) among the parameters (1) to (5). 12) FIGS. 12A to 12C show light source images when the “width of the light guide projection” is changed. FIGS. 12A to 12C are luminous intensity distribution diagrams showing the _OH light distribution patterns P _OH formed on the surface of the virtual vertical screen when the “width of the light guide convex portion 16” is changed. is there. Numerical values (1) to (5) shown in FIGS. 12A to 12C represent dimensions (relative values) of the parameters (1) to (5).

As shown in FIGS. 12A to 12C, the luminous intensity distribution mainly in the width direction (Y-axis direction) of the _OH light distribution pattern P _OH is changed by changing the “width of the light guide convex portion 16”. Can be changed.

(Second embodiment)
In the second embodiment, among the parameters (1) to (5), (4) of the light source image when the OH light _LOH is projected on the virtual vertical screen facing the lens body 12 by simulation. 13) (a) to (c) show light source images when the “angle of the OH emission surface 16a” is changed. 13A to 13C are luminous intensity distribution diagrams showing the _OH light distribution patterns P _OH formed on the surface of the virtual vertical screen when the “angle of the OH emission surface 16a” is changed. is there. Numerical values (1) to (5) shown in FIGS. 13A to 13C represent respective dimensions (relative values) of the parameters (1) to (5).

As shown in FIGS. 13A to 13C, the luminous intensity distribution mainly in the height direction (Z-axis direction) of the _OH light distribution pattern P _OH is changed by changing the “angle of the OH emission surface 16a”. Can be changed.

(Third embodiment)
In the third embodiment, among the above parameters (1) to (7), (6) of the light source image when the OH light L _OH is projected on the virtual vertical screen facing the lens body 12 by simulation. 14) FIGS. 14A and 14B show light source images when the "curvature of the emission surface 16a for OH" is changed. FIGS. 14A and 14B are luminous intensity distribution diagrams showing the _OH light distribution patterns P _OH formed on the surface of the virtual vertical screen when the “curvature of the OH emission surface 16a” is changed. is there. The numerical values (1) to (7) shown in FIGS. 14A and 14B represent the dimensions (relative values) of the parameters (1) to (7). When the numerical value of (6) is “none”, it indicates that the OH emission surface 16a is a plane.

As shown in FIGS. 14A and 14B, the luminous intensity distribution mainly in the width direction (Y-axis direction) of the _OH light distribution pattern P _OH is changed by changing the “curvature of the OH emission surface 16a”. Can be changed.

(Fourth embodiment)
In the fourth embodiment, among the parameters (1) to (7), (7) regarding the light source image when the OH light L _OH is projected on the virtual vertical screen directly facing the lens body 12 by simulation. FIGS. 15A and 15B show light source images when the “height of the incident surface 12e for OH” is changed. FIGS. 15A and 15B are luminous intensity distribution diagrams showing the _OH light distribution pattern P _OH formed on the surface of the virtual vertical screen when the “height of the OH incident surface 12e” is changed. It is. Numerical values (1) to (7) shown in FIGS. 15A and 15B represent respective dimensions (relative values) of the parameters (1) to (7).

As shown in FIGS. 15A and 15B, the luminous intensity mainly in the height direction (Z-axis direction) of the _OH light distribution pattern P _OH is changed by changing the “height of the OH incident surface 12e”. The distribution can be changed.

10, 10A: vehicle lamp 12, 12A: lens body 12a: incident part (first incident surface) 12b: reflective surface 12c: front end of the reflective surface 12d: emission surface 12D: continuous emission surface 12e: overhead (OH) Incident surface 12A1 First lens portion 12A2 Second lens portion 12A3 Connecting portion 12A4 Synthetic lens 12A1a First exit surface 12A2a Second entrance surface 12A2b Second exit surface 12A2B Continuous exit surface 14 Light source 16 Light guide convex portion 16a: Overhead (OH) emission surface 20, 20A: Vehicle lamp 22, 22A: Lens assembly F _12d : Focus F _12A4 : Synthetic focus K, S: Space V: Extension line L: Light L _LOW ... low beam (LB) light L _{OH ...} overhead (OH) light P _{LOW ...} low beam (LB) for the light distribution pattern P _{OH ...} O Heddo (OH) light distribution pattern P ... light distribution pattern

Claims (11)

An entrance, a reflection surface, and an exit surface are arranged in this order along a first reference axis extending in a horizontal direction, and light from a light source enters the inside of the lens from the entrance to enter the reflection surface. After a part of the light is reflected, the light is emitted to the outside of the lens from the emission surface to form a predetermined light distribution pattern including a cutoff line defined by the reflection surface on the upper edge. Lens body,
A light guide projection that is provided to protrude downward from the reflection surface and transmits a part of light incident on the reflection surface,
Includes an overhead exit surface located on the front surface of the light guide projection, and an overhead entrance surface located below the focal point of the exit surface,
The light emitted from the overhead emission surface to the outside of the light guide convex portion enters the lens from the overhead incidence surface, and is emitted from the emission surface to the outside of the lens. Light is formed to form an overhead light distribution pattern above the cutoff line,
By the height in the vertical direction of the overhead emission surface, the light distribution amount of the overhead light distribution pattern is adjusted,
Vertical by height in the direction of the possible features and, Relais lens body height of the light distribution pattern for the overhead extending from cutoff line upward is adjusted incidence surface for the overhead. The lens body according to claim 1, wherein the overhead incident surface is formed as a surface extending downward from a focal point of the emission surface . The lens body according to claim 2, wherein a focal point of the emission surface is set near a front end of the reflection surface. An entrance, a reflection surface, and an exit surface are arranged in this order along a first reference axis extending in a horizontal direction, and light from a light source enters the inside of the lens from the entrance to enter the reflection surface. After a part of the light is reflected, the light is emitted to the outside of the lens from the emission surface to form a predetermined light distribution pattern including a cutoff line defined by the reflection surface on the upper edge. Lens body,
A first lens unit including the first incidence surface serving as the incidence unit, the reflection surface, and a first emission surface;
A second lens portion including a second entrance surface and a second exit surface serving as the exit surface,
The surface shape of the first emission surface is adjusted so as to condense light emitted from the first emission surface in the first direction,
The surface shape of the second emission surface is adjusted so as to collect light emitted from the second emission surface in a second direction orthogonal to the first direction ,
The first lens unit is provided so as to protrude downward from the reflection surface, and has a light guide protrusion that transmits a part of light incident on the reflection surface,
Includes an overhead emission surface located on the front surface of the light guide convex portion, and an overhead incidence surface located between the overhead emission surface and the first emission surface,
Light emitted from the overhead exit surface to the outside of the light guide convex portion enters the lens from the overhead incidence surface and exits from the second exit surface to the outside of the second lens portion. , light irradiated to the lens front, the cut-off line features and, Relais lens body that is configured to form an overhead light distribution pattern upward. A connection unit that connects the first lens unit and the second lens unit;
The connection unit connects the first lens unit and the second lens unit in a state where a space is formed between the first exit surface and the second entrance surface. The lens body according to claim 4 . The overhead entrance surface is located below a combined focal point of a combined lens including the first exit surface, the second entrance surface of the second lens unit, and the second exit surface. The lens body according to claim 4, wherein the lens body is a lens body. The lens body according to claim 6, wherein the overhead incidence surface is located on an extension extending vertically from a combined focal point of the combined lens. The lens body according to any one of claims 1 to 7 , wherein the reflection surface is inclined obliquely downward and forward with respect to the first reference axis. A lens body according to any one of claims 1 to 8,
A lens combined body, wherein a plurality of the lens bodies are arranged in a row, and the respective emission faces are combined to form a continuous emission face extending linearly in a predetermined direction. A lens body according to any one of claims 1 to 8,
A light source for irradiating light toward the incident portion of the lens body. A lens assembly according to claim 9,
A vehicular lamp, comprising: a plurality of light sources that irradiate a plurality of lens bodies constituting the lens assembly with light toward each of the incident portions.