JP6281393B2 - Vehicle lamp and lens body - Google Patents

Description

  The present invention relates to a vehicular lamp and a lens body, and more particularly, to a vehicular lamp including a light source and a light distribution forming lens unit disposed in front of the light source, and a lens body used therefor.

  Conventionally, a vehicular lamp including a light source and a light distribution forming lens unit disposed in front of the light source has been proposed (see, for example, Patent Document 1).

  FIG. 14 is a schematic configuration diagram of a vehicle lamp 200 described in Patent Document 1.

  As shown in FIG. 14, the vehicular lamp 200 described in Patent Document 1 includes a light source 210 (semiconductor light emitting element), a light distribution forming lens unit 220 disposed in front of the light source 210, and the like.

  The light distribution forming lens unit 220 includes a front surface 222 and a rear surface 224. The light distribution forming lens unit 220 is incident on the light distribution forming lens unit 220 from the rear surface 224 and is emitted by the light from the light source 210 emitted from the front surface 222. It is configured as a lens portion that forms a light distribution pattern.

JP2013-26185A

  However, in the vehicular lamp 200 described in Patent Document 1, the light distribution forming lens unit 220 is disposed at a position separated from the light source 210 (that is, a space between the light source 210 and the light distribution forming lens unit 220). As a result, the appearance of the light source 210 and the internal structure such as wiring arranged around the light source 210 are directly visually recognized from the outside through the space.

  Further, in the vehicle lamp 200 described in Patent Document 1, the light utilization efficiency is reduced as a result of the loss of the light ray in the wide-angle direction from the light transmitted from the light distribution forming lens unit 220 out of the light from the light source 210. There is a problem.

  The present invention has been made in view of such circumstances, and in a vehicular lamp including a light source and a light distribution forming lens unit disposed in front of the light source, the light source and the surroundings are disposed from the outside. An object is to improve the appearance so that the internal structure of the wiring and the like is not directly recognized, and to increase the light use efficiency.

  In order to achieve the above object, the invention described in claim 1 includes a light source and a light distribution forming lens unit disposed in front of the light source, and is transmitted through the light distribution forming lens unit and irradiated forward. A vehicular lamp configured to form a predetermined light distribution pattern with light from the light source, including a front end portion that surrounds the periphery of the light distribution forming lens portion, and a cylindrical shape from the front end portion toward the light source side A cylindrical appearance light emitting lens portion that surrounds a space between the light distribution forming lens portion and the light source, and an outer peripheral surface of the appearance light emitting lens portion includes a lower surface and a surface other than the lower surface. The lower surface is configured as a diffuse reflection surface that enters the light emitting lens portion for appearance from the inner peripheral surface of the light emitting lens portion for appearance and diffuses and reflects light from the light source incident on the lower surface. Other than the lower surface The surface is configured as a diffusing surface that diffuses light from the light source that enters the light emitting lens portion for appearance from the inner peripheral surface of the light emitting lens portion for appearance and exits from a surface other than the lower surface. It is a lamp.

  According to the first aspect of the present invention, in the vehicular lamp including the light source and the light distribution forming lens unit disposed in front of the light source, the internal structure such as the light source and wiring disposed around the light source from the outside is provided. While improving appearance so that it may not be visually recognized directly, light use efficiency can be improved.

  The appearance can be improved so that the internal structure such as the light source and the wiring arranged around the light source is not directly visible from the outside. The appearance light-emitting lens portion has a front end portion that surrounds the light distribution forming lens portion. In addition, it extends in a cylindrical shape from the front end portion toward the light source, and surrounds the space between the light distribution forming lens portion and the light source.

  The light utilization efficiency can be increased because the light from the light source is light in a wider angle direction than the light transmitted through the light distribution forming lens portion (that is, the light that has been a conventional loss that does not enter the light distribution forming lens portion). Is used to make it look as if the light emitting lens portion for appearance is emitting light.

  In addition, according to the first aspect of the invention, it is visually recognized that the entire surface of the appearance light emitting lens portion emits light (that is, the appearance of the appearance light emitting lens portion is visually recognized as three-dimensionally emitting light). ) A new-looking vehicle lamp can be provided. This is because the light incident on the interior of the appearance light emitting lens portion is emitted as diffused light from the entire surface of the appearance light emitting lens portion by the action of the outer peripheral surface (diffuse reflection surface and diffusion surface).

  According to a second aspect of the present invention, in the invention of the first aspect, the inner peripheral surface of the appearance light emitting lens portion is light from the light source that enters the appearance light emitting lens portion from the inner peripheral surface. It is configured as a diffusion surface for diffusing.

  According to the second aspect of the present invention, the inner peripheral surface of the appearance light emitting lens portion is configured as a diffusion surface, so that the light source is incident on the appearance light emitting lens portion from the inner peripheral surface of the appearance light emitting lens portion. Can be incident on the entire area (or substantially the entire area) of the outer peripheral surface of the light-emitting lens unit.

  According to a third aspect of the present invention, in the invention according to the first or second aspect, the light distribution forming lens portion is configured as a lens portion having a rectangular outer shape when viewed from the front, and the light emitting lens portion for appearance is provided. Includes a front end portion that surrounds the periphery of the light distribution forming lens portion, and extends in a rectangular cylindrical shape from the front end portion to the light source side, and surrounds a space between the light distribution forming lens portion and the light source. It is configured as a rectangular cylindrical lens portion, and an outer peripheral surface of the appearance light emitting lens portion is configured as a rectangular cylindrical surface surrounded by the lower surface and a surface other than the lower surface. .

  According to the invention described in claim 3, it is visually recognized that the entire surface of the rectangular cylindrical appearance light emitting lens portion emits light (that is, the rectangular cylindrical appearance light emitting lens portion emits light three-dimensionally. A new-looking vehicular lamp can be provided. This is because the light incident on the rectangular cylindrical appearance light emitting lens part is emitted as diffused light from the entire surface of the rectangular cylindrical appearance light emitting lens part by the action of the outer peripheral surface (diffuse reflection surface and diffusion surface). Is due to.

  The invention according to claim 4 is the invention according to claim 1 or 2, wherein the light distribution forming lens portion is configured as a lens portion having a circular or elliptical outer shape when viewed from the front. The light emitting lens part includes a front end part surrounding the periphery of the light distribution forming lens part, and extends in a circular or elliptical cylindrical shape from the front end part to the light source side, and the light distribution forming lens part and the light source Is formed as a circular or elliptical cylindrical lens portion that surrounds the space between, and the outer peripheral surface of the appearance light emitting lens portion is a circular or elliptical cylindrical shape surrounded by the lower surface and a surface other than the lower surface It is characterized by being configured as a surface.

  According to the fourth aspect of the present invention, it is visually recognized that the entire surface of the circular or oval cylindrical light-emitting lens portion is emitting light (that is, the circular or elliptical cylindrical light-emitting lens portion is visually recognized. It is possible to provide a vehicular lamp having a new appearance (viewed as if it is emitting light three-dimensionally). This is because the light that has entered the circular or elliptical cylindrical light emitting lens part is reflected from the entire surface of the circular or elliptical cylindrical light emitting lens part by the action of the outer peripheral surface (diffuse reflection surface and diffusion surface). This is due to emission as diffused light.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein a rear end surface of the appearance light emitting lens portion is incident on the inside of the appearance light emitting lens portion from the rear end surface. The appearance light emitting lens part is configured such that the light from the light source becomes a parallel light beam and proceeds toward the front end face of the appearance light emitting lens part and exits from the front end face. The front end surface is configured as a diffusing surface for diffusing light from the light source emitted from the front end surface.

  According to the invention of claim 5, it is visually recognized that the entire appearance of the light emitting lens portion for appearance is emitted (that is, the appearance of the light emitting lens portion for appearance is visually recognized as three-dimensionally emitted). It is possible to provide a vehicular lamp that looks good. This is because the light incident on the light emitting lens part for appearance diffuses from the entire surface of the light emitting lens part for appearance by the action of the outer peripheral surface (diffuse reflection surface and diffusion surface) and the front end surface (diffusion surface) of the light emitting lens part for appearance. This is due to emission as light.

  The invention according to claim 6 is the invention according to any one of claims 1 to 4, wherein a rear end surface of the appearance light emitting lens portion is incident on the inside of the appearance light emitting lens portion from the rear end surface. The appearance light emitting lens part is configured such that the light from the light source becomes a parallel light beam and proceeds toward the front end face of the appearance light emitting lens part and exits from the front end face. The front end surface includes a plurality of lens surfaces with focal points set in front of the front end surface.

  According to the invention of claim 6, it is visually recognized as if the entire light emitting lens portion for appearance is emitting light (that is, it is visually recognized as if the light emitting lens portion for appearance is three-dimensionally emitted). It is possible to provide a vehicular lamp that looks good. This is because the light incident on the interior of the light-emitting lens portion for appearance is caused by the action of the outer peripheral surface (diffuse reflection surface and diffusion surface) and the front end surface (a plurality of lens surfaces) of the light-emitting lens portion for appearance. This is because the light is emitted as diffused light.

  According to the sixth aspect of the present invention, the light from the light source emitted from the lens surface can be condensed and then diffused. Further, since the light emitted from each lens surface is collected at one point, a vehicle lamp having a new appearance in which dots are arranged by the number of lens surfaces can be provided.

  The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the diffusing surface and the diffusive reflecting surface are a textured surface or a cut surface including a plurality of minute irregularities. Features.

  According to the seventh aspect of the present invention, the light from the light source can be diffused in all directions by the action of the embossed surface or the cut surface including a plurality of minute irregularities.

  The invention according to claim 8 is the invention according to any one of claims 1 to 7, wherein the light distribution forming lens part and the appearance light emitting lens part are integrally molded. .

  According to the eighth aspect of the present invention, it is possible to provide a vehicular lamp in which the light distribution forming lens portion and the appearance light emitting lens portion are integrally molded.

  The invention according to claim 9 is the light emission for appearance in the invention according to any one of claims 1 to 8, wherein a part of the outer peripheral surface of the light emitting lens portion for appearance is visually recognized from the outside. An extension disposed in a state of surrounding a portion other than the portion of the outer peripheral surface of the lens portion is further provided.

  According to the ninth aspect of the present invention, the extension surrounds a portion other than a part of the outer peripheral surface of the appearance light emitting lens portion, and a part of the outer peripheral surface of the appearance light emitting lens portion is visually recognized from the outside. A new-looking vehicle lamp can be provided.

  According to a tenth aspect of the present invention, in a lens body configured to form a predetermined light distribution pattern, a light distribution forming lens unit disposed in front of a light source, and a front end surrounding the periphery of the light distribution forming lens unit A cylindrical appearance light-emitting lens portion that extends in a cylindrical shape from the front end portion to the light source side and surrounds a space between the light distribution forming lens portion and the light source, The light distribution forming lens unit is configured as a lens unit that forms a predetermined light distribution pattern by light from the light source that is transmitted forward through the light distribution forming lens unit. The outer peripheral surface includes a lower surface and a surface other than the lower surface, and the lower surface is incident on the appearance light emitting lens portion from the inner peripheral surface of the appearance light emitting lens portion, and from the light source incident on the lower surface. Diffuse reflection of light It is configured as a diffuse reflection surface, and the surface other than the lower surface is incident on the appearance light emitting lens portion from the inner peripheral surface of the appearance light emitting lens portion, and is emitted from the light source that is emitted from the surface other than the lower surface. It is a lens body configured as a diffusion surface for diffusing light.

  According to the invention described in claim 10, in the vehicular lamp including the light source and the light distribution forming lens unit arranged in front of the light source, the internal structure such as the light source and wiring arranged around the light source from outside is provided. It is possible to provide a lens body that can improve the appearance so that it is not visually recognized directly and can enhance the light utilization efficiency.

  The appearance can be improved so that the internal structure such as the light source and the wiring arranged around the light source is not directly visible from the outside. The appearance light-emitting lens portion has a front end portion that surrounds the light distribution forming lens portion. In addition, it extends in a cylindrical shape from the front end portion toward the light source, and surrounds the space between the light distribution forming lens portion and the light source.

  The light utilization efficiency can be increased because the light from the light source is light in a wider angle direction than the light transmitted through the light distribution forming lens portion (that is, the light that has been a conventional loss that does not enter the light distribution forming lens portion). Is used to make it look as if the light emitting lens portion for appearance is emitting light.

  According to the invention described in claim 10, it is visually recognized as if the entire light emitting lens portion for appearance is emitting light (that is, it is visually recognized as if the light emitting lens portion for appearance is three-dimensionally emitting light). ) A new-looking lens body can be provided. This is because the light incident on the interior of the appearance light emitting lens portion is emitted as diffused light from the entire surface of the appearance light emitting lens portion by the action of the outer peripheral surface (diffuse reflection surface and diffusion surface).

  According to an eleventh aspect of the present invention, in the invention according to the tenth aspect, an inner peripheral surface of the appearance light emitting lens portion is light from the light source that enters the appearance light emitting lens portion from the inner peripheral surface. It is characterized by being configured as a diffusion surface for diffusing.

  According to the invention of claim 11, the inner peripheral surface of the appearance light emitting lens portion is configured as a diffusing surface, so that the light source that enters the appearance light emitting lens portion from the inner peripheral surface of the appearance light emitting lens portion. Can be incident on the entire area (or substantially the entire area) of the outer peripheral surface of the light-emitting lens unit.

  A twelfth aspect of the present invention is the light emitting lens portion for appearance according to the tenth or eleventh aspect, wherein the light distribution forming lens portion is configured as a lens portion having a rectangular outer shape when viewed from the front. Includes a front end portion that surrounds the periphery of the light distribution forming lens portion, and extends in a rectangular cylindrical shape from the front end portion to the light source side, and surrounds a space between the light distribution forming lens portion and the light source. It is configured as a rectangular cylindrical lens portion, and an outer peripheral surface of the appearance light emitting lens portion is configured as a rectangular cylindrical surface surrounded by the lower surface and a surface other than the lower surface. .

  According to the twelfth aspect of the present invention, it is visually recognized that the entire surface of the rectangular cylindrical appearance light emitting lens portion emits light (that is, the rectangular cylindrical appearance light emitting lens portion emits light three-dimensionally. A new-looking lens body can be provided. This is because the light incident on the rectangular cylindrical appearance light emitting lens part is emitted as diffused light from the entire surface of the rectangular cylindrical appearance light emitting lens part by the action of the outer peripheral surface (diffuse reflection surface and diffusion surface). Is due to.

  According to a thirteenth aspect of the present invention, in the invention according to the tenth or eleventh aspect, the light distribution forming lens portion is configured as a lens portion having a circular or elliptical outer shape when viewed from the front. The light emitting lens part includes a front end part surrounding the periphery of the light distribution forming lens part, and extends in a circular or elliptical cylindrical shape from the front end part to the light source side, and the light distribution forming lens part and the light source Is formed as a circular or elliptical cylindrical lens portion that surrounds the space between, and the outer peripheral surface of the appearance light emitting lens portion is a circular or elliptical cylindrical shape surrounded by the lower surface and a surface other than the lower surface It is characterized by being configured as a surface.

  According to the thirteenth aspect of the present invention, it is visually recognized that the entire surface of the circular or elliptical cylindrical light-emitting lens portion is emitting light (that is, the circular or elliptical cylindrical light-emitting lens portion is visually recognized. It is possible to provide a lens body having a new appearance (viewed as if it is emitting light three-dimensionally). This is because the light that has entered the circular or elliptical cylindrical light emitting lens part is reflected from the entire surface of the circular or elliptical cylindrical light emitting lens part by the action of the outer peripheral surface (diffuse reflection surface and diffusion surface). This is due to emission as diffused light.

  According to a fourteenth aspect of the present invention, in the invention according to any one of the tenth to thirteenth aspects, the rear end surface of the appearance light emitting lens portion is incident on the inside of the appearance light emitting lens portion from the rear end surface. The appearance light emitting lens part is configured such that the light from the light source becomes a parallel light beam and proceeds toward the front end face of the appearance light emitting lens part and exits from the front end face. The front end surface is configured as a diffusing surface for diffusing light from the light source emitted from the front end surface.

  According to the invention of claim 14, it is visually recognized as if the entire surface of the light emitting lens portion for appearance is emitting light (that is, it is visually recognized as if the light emitting lens portion for appearance is three-dimensionally emitted). An attractive lens body can be provided. This is because the light incident on the light emitting lens part for appearance diffuses from the entire surface of the light emitting lens part for appearance by the action of the outer peripheral surface (diffuse reflection surface and diffusion surface) and the front end surface (diffusion surface) of the light emitting lens part for appearance. This is due to emission as light.

  According to a fifteenth aspect of the present invention, in the invention according to any one of the twelfth to seventeenth aspects, a rear end surface of the appearance light emitting lens portion is incident on the appearance light emitting lens portion from the rear end surface. The appearance light emitting lens part is configured such that the light from the light source becomes a parallel light beam and proceeds toward the front end face of the appearance light emitting lens part and exits from the front end face. The front end surface includes a plurality of lens surfaces with focal points set in front of the front end surface.

  According to the fifteenth aspect of the present invention, it is visually recognized as if the entire light emitting lens portion for appearance is emitting light (that is, it is visually recognized as if the light emitting lens portion for appearance is three-dimensionally emitted). An attractive lens body can be provided. This is because the light incident on the interior of the light-emitting lens portion for appearance is caused by the action of the outer peripheral surface (diffuse reflection surface and diffusion surface) and the front end surface (a plurality of lens surfaces) of the light-emitting lens portion for appearance. This is because the light is emitted as diffused light.

  According to the fifteenth aspect of the present invention, the light from the light source emitted from the lens surface can be condensed and then diffused. Further, since the light emitted from each lens surface is collected at one point, a lens body having a new appearance in which dots are arranged by the number of lens surfaces can be provided.

  The invention according to claim 16 is the invention according to any one of claims 10 to 15, wherein the diffusing surface and the diffusive reflecting surface are embossed surfaces or cut surfaces including a plurality of minute irregularities. It is characterized by that.

  According to invention of Claim 16, the light from a light source can be spread | diffused in all directions by the effect | action of the embossed surface or cut surface containing several micro unevenness | corrugations.

  The invention according to claim 17 is the invention according to any one of claims 10 to 16, wherein the light distribution forming lens portion and the appearance light emitting lens portion are integrally molded. .

  According to the invention described in claim 17, it is possible to provide a lens body in which the light distribution forming lens portion and the appearance light emitting lens portion are integrally molded.

  According to the present invention, in a vehicular lamp including a light source and a light distribution forming lens unit disposed in front of the light source, the internal structure such as the light source and wiring disposed around the light source is not directly visible from the outside. The appearance can be improved and the light utilization efficiency can be increased.

(A) It is a front view of the vehicular lamp 10 which is one embodiment of the present invention, (b) is a perspective view, (c) is a longitudinal sectional view, (d) is a longitudinal sectional view (including the optical path). 3 is a perspective view of a light distribution forming lens unit 14. FIG. (A)-(d) Part distribution which constitutes a part of a low beam light distribution pattern formed on the virtual vertical screen by the light RayA from the light source 12 which is transmitted forward through the light distribution forming lens unit 14 (E) An example of a light distribution pattern for low beam formed by superimposing the partial distribution light patterns shown in FIGS. 3 (a) to 3 (d). It is an example of the road surface light distribution pattern formed on the road surface by the light RayA from the light source 12 that passes through the light distribution forming lens portion 14 and is irradiated forward. It is a front view of the light distribution formation lens part 14 (modification). (A) The figure showing the simulation result of the vehicular lamp 10 of this embodiment, (b) The simulation result of the vehicular lamp of the comparative example (the vehicular lamp from which the light emitting lens portion 16 for appearance is omitted from the vehicular lamp 10). FIG. It is a figure showing the simulation result of the vehicular lamp 10 of this embodiment (the vehicular lamp in which the inner peripheral surface 16a of the light-emitting lens portion for appearance 16 is configured as a flat surface instead of a diffusing surface). (A) The figure showing the simulation result of the vehicular lamp 10 of this embodiment (the vehicular lamp in which the inner peripheral surface 16a of the light emitting lens portion 16 for appearance is configured as a textured surface having a relatively large roughness). b) It is a figure showing the simulation result of the vehicular lamp 10 of this embodiment (the vehicular lamp in which the inner peripheral surface 16a of the light emitting lens portion 16 for appearance is configured as a textured surface having a relatively small roughness). It is a perspective view of the vehicular lamp 10 to which the extension E is added. It is a longitudinal cross-sectional view of the light emitting lens part for appearance 16A which is the 1st modification of the light emitting lens part for appearance. FIG. 12 is a perspective view of a light emitting lens portion for appearance 16B, which is a second modification of the light emitting lens portion for appearance 16, and FIG. It is a longitudinal cross-sectional view of the light emitting lens part for appearance 16B which is the 2nd modification of the light emitting lens part for appearance. It is a figure showing the simulation result of the vehicle lamp 10 using the light emitting lens part 16B for appearance of a 2nd modification. It is a schematic block diagram of the vehicle lamp 200 of patent document 1. FIG.

  Hereinafter, a vehicular lamp that is an embodiment of the present invention will be described with reference to the drawings.

  1A is a front view of a vehicular lamp 10 according to an embodiment of the present invention, FIG. 1B is a perspective view, FIG. 1C is a longitudinal sectional view, and FIG. 1D is a longitudinal sectional view. (Including the optical path).

  As shown in FIGS. 1A to 1D, the vehicular lamp 10 according to the present embodiment includes a light source 12, a light distribution forming lens unit 14 disposed in front of the light source 12, and a light emitting lens unit 16 for appearance. Etc., on a virtual vertical screen (located about 25 m ahead from the front of the vehicle) facing the front of the vehicle by the light RayA from the light source 12 that is transmitted forward through the light distribution forming lens unit 14 This is configured as a vehicle headlamp that forms a partial light distribution pattern (corresponding to the predetermined light distribution pattern of the present invention) constituting a part of the low beam light distribution pattern.

  The light source 12 includes, for example, a semiconductor light emitting element such as a metal substrate (not shown) and a white LED light source (or white LD light source) mounted on the surface of the substrate. The white LED light source includes a light emitting surface 12a (for example, 1 mm square). In addition, the number of white LED light sources should just be one or more.

The directivity of light emitted from the light source 12 (light emitting surface 12a) is Lambertian and can be expressed as I (θ) = I ₀ × cos θ. This represents the spread of light emitted from the light source 12 (light emitting surface 12a). However, I (θ) represents the luminous intensity in the direction inclined by the angle θ from the optical axis AX ₁₂ of the light source 12 (light emitting surface 12a), and I ₀ represents the luminous intensity on the optical axis AX ₁₂ . In the light source 12 (light-emitting surface 12a), the light intensity of the optical axis _{AX 12} above (theta = 0) becomes maximum.

Light source 12 toward the light emitting surface 12a to the front, the optical axis AX ₁₂ is arranged in the reference point near F of the optical design of the light distribution forming lens unit 14 in a state that matches the reference axis AX extending in longitudinal direction of the vehicle (See FIG. 1 (c)).

  A light distribution forming lens unit 14 is disposed in front of the light source 12 and on the reference axis AX.

  FIG. 2 is a perspective view of the light distribution forming lens unit 14. FIGS. 3A to 3D are diagrams showing a low beam light distribution pattern formed on the virtual vertical screen by the light RayA from the light source 12 that is transmitted forward through the light distribution forming lens unit 14. It is an example of the partial distribution light pattern which comprises a part. FIG. 3E is an example of a low beam light distribution pattern formed by superimposing the partial distribution light patterns shown in FIGS. 3A to 3D. FIG. 4 is an example of a road surface light distribution pattern formed on the road surface by the light RayA from the light source 12 that is transmitted forward through the light distribution forming lens unit 14.

  The light distribution forming lens unit 14 transmits part of the low beam distribution pattern on the virtual vertical screen by the light RayA from the light source 12 that is transmitted forward through the light distribution forming lens unit 14. It is configured as a lens unit that forms a pattern (for example, any one of the partial light distribution patterns shown in FIGS. 3A to 3D). Specifically, the light distribution forming lens portion 14 includes an optical design reference point F disposed at a position where the front surface 14a, the rear surface 14b, and the rear surface 14b face each other (FIG. 1C). And a lens portion (see FIG. 1A) having a rectangular outer shape when viewed from the front. Of course, the light distribution forming lens portion 14 may be configured as a lens portion having an outer shape other than this, for example, as shown in FIG. The material of the light distribution forming lens portion 14 may be polycarbonate, other transparent resin such as acrylic, or glass.

  The light distribution forming lens unit 14 is configured by the following procedure, for example.

  First, the external shape and surface shape of the front side surface 14a are designed. The external shape and surface shape of the front surface 14a are designed with priority on design. Next, on the premise of the outer shape and surface shape of the front side surface 14a, the light RayA from the light source 12 that enters the light distribution forming lens unit 14 from the rear side surface 14b and exits from the front side surface 14a is virtually vertical. The surface shape of the rear surface 14b is designed (for example, designed as a free-form surface) so as to form a partial light distribution pattern that forms part of the low beam light distribution pattern on the screen. The light distribution forming lens unit 14 is configured by the above procedure. Of course, the light distribution forming lens unit 14 may be configured as a lens unit other than this, for example, a general convex lens unit.

  An appearance light emitting lens portion 16 is disposed between the light source 12 and the light distribution forming lens portion 14.

As shown in FIGS. 1A to 1C, the appearance light emitting lens portion 16 includes a front end portion 16e surrounding the light distribution forming lens portion 14, and the reference axis AX extends from the front end portion 16e. Is formed as a rectangular cylindrical lens portion that extends in a rectangular tube shape toward the light source 12 and surrounds the space between the light distribution forming lens portion 14 and the light source 12. Of course, the light-emitting lens portion 16 for appearance includes a cylindrical lens portion other than this, for example, a front end portion 16e surrounding the periphery of the light distribution forming lens portion 14, and extends from the front end portion 16e along the reference axis AX. It may be configured as a circular or elliptical cylindrical lens portion that extends in a circular or elliptical cylindrical shape toward the light source 12 and surrounds the space between the light distribution forming lens portion 14 and the light source 12 (light distribution formation). When the outer shape of the lens unit 14 is circular or elliptical when viewed from the front (see FIG. 5). The material of the light emitting lens portion 16 for appearance may be polycarbonate, other transparent resin such as acrylic, or glass. Note that the axis AX ₁₆ of the light-emitting lens unit 16 for appearance may or may not coincide with the reference axis AX. The light distribution forming lens portion 14 is fixed to the appearance light emitting lens portion 16 in a state where the side surface 14c thereof is in close contact with the inner peripheral surface 16a (front end side) of the appearance light emitting lens portion 16 (for example, in a state of being in close contact by adhesion). (See FIG. 1C). The light distribution forming lens portion 14 and the appearance light emitting lens portion 16 may be integrally formed. The light distribution forming lens portion 14 and the appearance light emitting lens portion 16 correspond to the lens body of the present invention.

  First, the main function of the light emitting lens unit 16 for appearance is light RayB1, B2 and RayC in a wider angle direction than the light RayA transmitted through the light distribution forming lens unit 14 out of the light from the light source 12 (that is, the light distribution formation). Light that has been conventionally lost without being incident on the lens unit 14 (see FIG. 1D) is taken into the light emitting lens unit 16 for appearance, and secondly, the light RayB1 is taken into the light emitting lens unit 16 for appearance. , B2 and RayC are to make it visible as if the entire surface of the light emitting lens portion for appearance 16 is emitting light.

  An inner peripheral surface 16a of the appearance light emitting lens portion 16 is configured as a rectangular cylindrical surface surrounded by an upper surface 16a1, a lower surface 16a2, and side surfaces 16a3 and 16a4. The inner peripheral surface 16 a of the appearance light emitting lens portion 16 functions as an incident surface on which the light Rays B <b> 1 and B <b> 2 from the light source 12 enter the appearance light emitting lens portion 16. The inner peripheral surface 16a of the appearance light emitting lens unit 16 is configured as a diffusing surface that diffuses the light rays B1 and B2 from the light source 12 incident on the appearance light emitting lens unit 16 from the inner peripheral surface 16a. Specifically, it is configured as a textured surface or a cut surface including a plurality of minute irregularities. In this way, by configuring the inner peripheral surface 16a of the appearance light-emitting lens portion 16 as a diffusing surface, the light source 12 that enters the appearance light-emitting lens portion 16 from the inner peripheral surface 16a of the appearance light-emitting lens portion 16 is used. The light Rays B1 and B2 can be made incident on the entire area (or substantially the entire area) of the outer peripheral surface 16b of the light emitting lens portion 16 for appearance.

  Similarly, the outer peripheral surface 16b of the appearance light emitting lens portion 16 is configured as a rectangular cylindrical surface surrounded by surfaces (upper surface 16b1, side surfaces 16b3, 16b4) other than the lower surface 16b2 and the lower surface 16b2. Of course, the outer peripheral surface 16b of the light-emitting lens portion 16 for appearance may be configured as a circular or elliptical cylindrical surface surrounded by a surface 16b6 other than the lower surface 16b5 and the lower surface 16b5 (of the light distribution forming lens unit 14). When the outer shape is circular or elliptical when viewed from the front (see FIG. 5).

  The outer peripheral surface 16b (the upper surface 16b1 and the side surfaces 16b3 and 16b4) of the appearance light emitting lens unit 16 is light from the light source 12 that has entered the appearance light emitting lens unit 16 from the inner peripheral surface 16a (the upper surface 16a1 and side surfaces 16a3 and 16a4). It functions as an exit surface from which RayB1 exits. The outer peripheral surface 16b (the upper surface 16b1 and the side surfaces 16b3 and 16b4, that is, the surfaces other than the lower surface 16b2) of the appearance light emitting lens portion 16 is incident on the appearance light emitting lens portion 16 from the inner peripheral surface 16a of the appearance light emitting lens portion 16. And it is comprised as a diffusion surface which diffuses light RayB1 from the light source 12 radiate | emitted from the said outer peripheral surface 16b (upper surface 16b1 and side surface 16b3, 16b4). Specifically, it is configured as a textured surface or a cut surface including a plurality of minute irregularities.

  On the other hand, the outer peripheral surface 16b (lower surface 16b2) of the appearance light-emitting lens portion 16 enters the appearance light-emitting lens portion 16 from the inner peripheral surface 16a of the appearance light-emitting lens portion 16, and enters the outer peripheral surface 16b (lower surface 16b2). The diffuse reflection surface is configured to diffusely reflect the light RayB2 from the incident light source 12. Specifically, it is configured as a textured surface or a cut surface including a plurality of minute irregularities.

  The rear end surface 16c of the appearance light emitting lens portion 16 is formed on the front end surface 16d of the appearance light emitting lens portion 16 by the light RayC from the light source 12 that has entered the appearance light emitting lens portion 16 from the rear end surface 16c. The surface shape is configured so as to travel toward and exit from the front end surface 16d.

  On the other hand, the front end surface 16d of the appearance light emitting lens portion 16 is configured as a diffusion surface that diffuses the light RayC from the light source 12 emitted from the front end surface 16d. Specifically, it is configured as a textured surface or a cut surface including a plurality of minute irregularities.

  In the vehicular lamp 10 having the above-described configuration, the partial distribution that configures a part of the low beam light distribution pattern on the virtual vertical screen by the light RayA from the light source 12 that is transmitted forward through the light distribution forming lens unit 14. A light pattern (corresponding to the predetermined light distribution pattern of the present invention) is formed.

  Further, it is visually recognized as if the entire surface of the light emitting lens portion for appearance 16 is emitting light (that is, it is visually recognized as if the light emitting lens portion for appearance 16 is emitting light three-dimensionally). This is because the light RayB1, B2, and RayC from the light source 12 incident on the interior of the light emitting lens unit 16 for appearance are the outer peripheral surface 16b (diffuse reflection surface and diffusion surface) and the light emitting lens unit 16 for appearance as described below. This is because the light is emitted as diffused light from the entire surface of the appearance light emitting lens portion 16 by the action of the front end surface 16d (diffusion surface).

  As shown in FIG. 1D, the light RayB1 from the light source 12 enters the appearance light emitting lens unit 16 from the inner peripheral surface 16a (the upper surface 16a1 and the side surfaces 16a3 and 16a4).

  At that time, the light RayB1 from the light source 12 becomes diffused light that diffuses in all directions by the action of the inner peripheral surface 16a (the upper surface 16a1 and the side surfaces 16a3 and 16a4) as the diffusion surface, and becomes the outer peripheral surface 16b (the upper surface 16b1 and the upper surface 16b1). Side surface 16b3, 16b4) is incident on the entire region (or substantially the entire region), and further, diffused light diffuses in all directions by the action of outer peripheral surface 16b (upper surface 16b1 and side surfaces 16b3, 16b4) as a diffusion surface. The light exits from the surface 16b (the upper surface 16b1 and the side surfaces 16b3 and 16b4). Thereby, it is visually recognized that the outer peripheral surface 16b (the upper surface 16b1 and the side surfaces 16b3 and 16b4) of the light emitting lens portion 16 for appearance is emitting light.

  On the other hand, the light RayB2 from the light source 12 enters the appearance light emitting lens portion 16 from the inner peripheral surface 16a (lower surface 16a2).

  At that time, the light RayB2 from the light source 12 becomes diffused light diffusing in all directions due to the action of the inner peripheral surface 16a (lower surface 16a2) as a diffusion surface, and the entire area (or approximately) of the outer peripheral surface 16b (lower surface 16b2). Further, the diffused reflected light is diffused in all directions by the action of the outer peripheral surface 16b (lower surface 16b2) as the diffuse reflection surface, and becomes the inner peripheral surface 16a (lower surface 16a2) and the light distribution forming lens unit 14. Then, the light is transmitted through the front end face 16d of the light emitting lens portion 16 for appearance and emitted to the outside. Thereby, it visually recognizes that the light distribution formation lens part 14 grade | etc., Is light-emitting.

  On the other hand, the light RayC from the light source 12 enters the appearance light emitting lens portion 16 from the rear end surface 16c of the appearance light emitting lens portion 16, and is converted into parallel rays by the action of the rear end surface 16c. The diffused light travels toward the front end face 16d and diffuses in all directions by the action of the front end face 16d as a diffusing face, and is emitted from the front end face 16d. As a result, the front end face 16d of the appearance light emitting lens portion 16 is visually recognized as emitting light.

  As described above, the light RayB1, B2, and RayC from the light source 12 incident on the appearance light emitting lens unit 16 are the outer peripheral surface 16b (diffuse reflection surface and diffusion surface) and the front end surface 16d of the appearance light emitting lens unit 16 ( Due to the action of the diffusing surface, the light is emitted as diffused light from the entire surface of the appearance light emitting lens portion 16. As a result, the appearance light-emitting lens portion 16 is visually recognized as if the entire surface is emitting light (that is, the appearance light-emitting lens portion 16 is visually recognized as emitting light three-dimensionally).

  Next, the simulation result performed in order to confirm the effect of the vehicle lamp 10 of the said structure is demonstrated.

  FIG. 6A is a diagram showing a simulation result of the vehicular lamp 10 according to the present embodiment, which is 30 degrees above the horizontal plane including the reference axis AX extending in the vehicle front-rear direction, with respect to the vertical plane including the reference axis AX. It is the figure which observed the vehicular lamp 10 of this embodiment from the direction of 30 degrees to the right. In FIG. 6A, the light distribution forming lens portion 14 and the appearance light emitting lens portion 16 are divided into a plurality of cells at a pitch of 0.2 [mm] vertically and horizontally. In the simulation, a cell in which the number of light rays (light beam diameter 0.1 [mm]) transmitted from the vehicle lamp 10 of the present embodiment is larger than a predetermined threshold among a plurality of cells (that is, a region having a high light intensity). Was calculated. The dots drawn in FIG. 6B represent the calculated cells (that is, areas with high light intensity).

  FIG. 6B is a diagram showing a simulation result of the vehicle lamp of the comparative example (vehicle lamp in which the appearance light emitting lens portion 16 is omitted from the vehicle lamp 10), and includes a reference axis AX extending in the vehicle front-rear direction. It is the figure which observed the vehicular lamp of the comparative example from the direction of 30 degrees on the horizontal plane and 30 degrees on the right with respect to the vertical plane including the reference axis AX. In FIG. 6B, the light distribution forming lens portion 14 is divided into a plurality of cells at a pitch of 0.2 [mm] vertically and horizontally. In the simulation, a cell (that is, a region having a high luminous intensity) in which the number of light beams (light beam diameter 0.1 [mm]) transmitted from the vehicle lamp of the comparative example is greater than a predetermined threshold among a plurality of cells is calculated. did. However, as shown in FIG. 6B, there was no cell satisfying such a condition (that is, a region having a high luminous intensity).

  Comparing FIG. 6A and FIG. 6B, the vehicular lamp 10 of the present embodiment has a larger number of light emitting points (the number of rays through which light rays pass is determined in advance than the vehicular lamp of the comparative example. The cells that are larger than the threshold value) are dispersed in a wide area, and it is visually recognized as if the entire surface of the light emitting lens unit for appearance 16 emits light (that is, the light emitting lens unit for appearance 16 emits light three-dimensionally). Can be seen).

  FIG. 7 is a diagram showing a simulation result of the vehicular lamp 10 of this embodiment (a vehicular lamp in which the inner peripheral surface 16a of the appearance light emitting lens portion 16 is configured as a flat surface instead of a diffusing surface). It is the figure which observed the vehicular lamp 10 of this embodiment from the direction of 30 degrees above with respect to the horizontal plane containing the reference axis AX extended in the direction of 30 degrees on the right with respect to the vertical plane containing the reference axis AX. In FIG. 7, the light distribution forming lens portion 14 and the appearance light emitting lens portion 16 are divided into a plurality of cells at a pitch of 0.2 [mm] vertically and horizontally. In the simulation, a cell in which the number of light rays (light beam diameter 0.1 [mm]) transmitted from the vehicle lamp 10 of the present embodiment is larger than a predetermined threshold among a plurality of cells (that is, a region having a high light intensity). Was calculated. The dots drawn in FIG. 7 represent the calculated cells (that is, areas with high luminous intensity).

  6 (a) and FIG. 7 are compared, even if the inner peripheral surface 16a of the light emitting lens portion for appearance 16 is not a diffusing surface but a flat surface, the entire surface of the light emitting lens portion for appearance 16 is visible. It turns out that it is visually recognized as emitting light (that is, it is visually recognized that the light emitting lens portion for appearance 16 emits light three-dimensionally). Moreover, it turns out that the light emission area becomes larger when the inner peripheral surface 16a of the light emitting lens portion 16 for appearance is configured as a diffusing surface.

  FIG. 8A shows a simulation result of the vehicular lamp 10 of this embodiment (a vehicular lamp in which the inner peripheral surface 16a of the light-emitting lens portion 16 for appearance is configured as a textured surface having a relatively large roughness). In the figure, the vehicle lamp 10 of the present embodiment was observed from the direction of 30 degrees above the horizontal plane including the reference axis AX extending in the vehicle longitudinal direction and 30 degrees to the right with respect to the vertical plane including the reference axis AX. FIG. In FIG. 8A, the light distribution forming lens portion 14 and the appearance light emitting lens portion 16 are divided into a plurality of cells at a pitch of 0.2 [mm] in the vertical and horizontal directions. In the simulation, a cell in which the number of light rays (light beam diameter 0.1 [mm]) transmitted from the vehicle lamp 10 of the present embodiment is larger than a predetermined threshold among a plurality of cells (that is, a region having a high light intensity). Was calculated. The dots drawn in FIG. 8A represent the calculated cells (that is, areas with high light intensity).

  FIG. 8B shows a simulation result of the vehicular lamp 10 according to the present embodiment (the vehicular lamp in which the inner peripheral surface 16a of the appearance light emitting lens portion 16 is configured as a textured surface having a relatively small roughness). In the figure, the vehicle lamp 10 of the present embodiment was observed from the direction of 30 degrees above the horizontal plane including the reference axis AX extending in the vehicle longitudinal direction and 30 degrees to the right with respect to the vertical plane including the reference axis AX. FIG. In FIG. 8B, the light distribution forming lens portion 14 and the appearance light emitting lens portion 16 are divided into a plurality of cells at a pitch of 0.2 [mm] in the vertical and horizontal directions. In the simulation, a cell in which the number of light rays (light beam diameter 0.1 [mm]) transmitted from the vehicle lamp 10 of the present embodiment is larger than a predetermined threshold among a plurality of cells (that is, a region having a high light intensity). Was calculated. The dots drawn in FIG. 8B represent the calculated cells (that is, areas with high light intensity).

  8 (a) and FIG. 8 (b) are compared, the larger the roughness of the embossed surface formed on the inner peripheral surface 16a of the light emitting lens portion 16 for appearance, the larger the light diffuses and the light emitting area. It turns out that becomes large.

  The vehicular lamp 10 is subjected to an aluminum vapor deposition process on the surface thereof, covers and hides the internal structure of the vehicular lamp, and is arranged for the purpose of improving the appearance by making the entire lamp room space look like a mirror color. May be provided.

  FIG. 9 is a perspective view of the vehicular lamp 10 to which the extension E is added.

  As shown in FIG. 9, in the extension E, a part of the outer peripheral surface 16b (eg, the upper surface 16b1 and the left side surface 16b3 toward the front of the vehicle in FIG. 9) is visually recognized from the outside. In this way, the outer peripheral surface 16b of the appearance light emitting lens portion 16 is disposed in a state of surrounding a portion other than a part (for example, the upper surface 16b1 and the side surface 16b3). In this way, the extension E surrounds a part of the outer peripheral surface 16b of the appearance light-emitting lens portion 16 other than a part (for example, the upper surface 16b1 and the side surface 16b3), and the outer peripheral surface 16b of the appearance light-emitting lens portion 16 It is possible to provide a vehicular lamp having a new appearance in which a part (for example, the upper surface 16b1 and the side surface 16b3) is visually recognized from the outside.

  As described above, according to the present embodiment, in the vehicular lamp 10 including the light source 12 and the light distribution forming lens unit 14 disposed in front of the light source 12, the light source 12 and the periphery thereof are disposed from the outside. In addition to improving the appearance so that the internal structure (not shown) such as the wiring is not directly visible, the light utilization efficiency can be increased.

  The appearance can be improved so that the internal structure such as the light source 12 and the wiring arranged around the light source 12 is not directly visible from the outside. The light emitting lens portion 16 for appearance surrounds the periphery of the light distribution forming lens portion 14. This is because it includes the front end portion 16e and extends in a cylindrical shape from the front end portion 16e toward the light source 12 so as to surround the space between the light distribution forming lens portion 14 and the light source 12. Further, this is because the outer peripheral surface 16b (the upper surface 16b1 and the side surfaces 16b3 and 16b4) and the inner peripheral surface 16a of the light emitting lens portion 16 for appearance are configured as a diffusing surface.

  The light utilization efficiency can be increased by making light RayB1, B2 and RayC in a wider angle direction than the light RayA transmitted through the light distribution forming lens unit 14 out of the light from the light source 12 (that is, incident on the light distribution forming lens unit 14). This is due to the fact that the light that has been lost in the past (see FIG. 1D) is used to make it appear as if the light emitting lens portion for appearance 16 is emitting light.

  In addition, according to the present embodiment, it is visually recognized that the entire surface of the appearance light emitting lens unit 16 emits light (that is, it is visually recognized that the appearance light emitting lens unit 16 emits light three-dimensionally). It is possible to provide a vehicular lamp 10 that looks good. This is because the light incident on the interior of the appearance light emitting lens portion 16 is reflected by the action of the outer peripheral surface 16b (diffuse reflection surface and diffusion surface) and the front end surface 16d (diffuse surface) of the appearance light emitting lens portion 16. This is because the light is emitted as diffused light from the entire surface of the portion 16.

  Next, a modified example will be described.

  FIG. 10 is a longitudinal sectional view of an appearance light emitting lens portion 16A which is a first modification of the appearance light emitting lens portion 16.

  As shown in FIG. 10, the rear end portion 16f of the light emitting lens portion for appearance 16A of the present modification extends to the side of the light source 12 as compared with the light emitting lens portion for appearance 16 of the above embodiment.

  According to the light emitting lens portion for appearance 16A of this modification, the inner peripheral surface 16a of the light emitting lens portion for appearance 16A that functions as an incident surface is extended in the direction of the reference axis AX, and more light RayB1, B2 is extended. In addition, the light enters the appearance light emitting lens portion 16A from the inner peripheral surface 16a. As a result, the light emitting lens portion for appearance 16A is visually recognized as emitting light more brightly.

  Further, according to the light emitting lens portion for appearance 16A of this modification, the rear end surface 16c of the light emitting lens portion for appearance 16A does not function as an incident surface, and the front end surface 16d of the light emitting lens portion for appearance 16 serves as an output surface. Since it does not function, these rear end surface 16c and front end surface 16d can be made into a free surface shape.

  FIG. 11 is a perspective view of an appearance light emitting lens portion 16B as a second modification of the appearance light emitting lens portion 16, and FIG. 12 is a longitudinal sectional view.

As shown in FIGS. 11 and 12, the front end surface 16d of the light emitting lens portion for appearance 16B of the present modification has a plurality of lens surfaces 16d1 (for example, a spherical surface or a spherical lens surface) with a focal point F _16d1 set in front thereof. Is included.

  According to the light emitting lens portion for appearance 16B of this modification, the light RayC from the light source 12 emitted from the lens surface 16d1 can be condensed and then diffused. Further, since the light emitted from each lens surface 16d1 is collected at one point, a vehicle lamp having a new appearance in which dots are arranged by the number of lens surfaces 16d1 can be provided.

  FIG. 13 is a diagram showing a simulation result of the vehicular lamp 10 using the appearance light emitting lens portion 16B of the second modified example. The reference axis is 30 degrees above the horizontal plane including the reference axis AX extending in the vehicle front-rear direction. It is the figure which observed the vehicle lamp 10 using the light emitting lens part 16B for appearance of this modification from the direction of 30 degree | times on the right with respect to the vertical plane containing AX. In FIG. 13, the light distribution forming lens portion 14 and the light emitting lens portion for appearance 16B are divided into a plurality of cells at a pitch of 0.2 [mm] vertically and horizontally. In the simulation, the number of light rays (light beam diameter 0.1 [mm]) from the vehicular lamp 10 using the appearance light emitting lens portion 16B of the present modification among a plurality of cells is determined from a predetermined threshold value. A large number of cells (i.e. areas with high luminous intensity) were calculated. The dots drawn in FIG. 13 represent the calculated cells (that is, areas with high luminous intensity).

  Referring to FIG. 13, it can be seen that a new appearance can be realized in which dots are arranged by the number of lens surfaces 16d1.

  Each numerical value shown in the above embodiment and each modified example is an exemplification, and any appropriate numerical value different from this can be used.

  The above embodiment is merely an example in all respects. The present invention is not construed as being limited to these descriptions. The present invention can be implemented in various other forms without departing from the spirit or main features thereof.

  DESCRIPTION OF SYMBOLS 10 ... Vehicle lamp, 12 ... Light source, 12a ... Light emission surface, 14 ... Light distribution formation lens part, 14a ... Front side surface, 14b ... Rear side surface, 14c ... Side surface, 16, 16A, 16B ... Light emission lens part for appearance 16a ... inner peripheral surface, 16a1 ... upper surface, 16a2 ... lower surface, 16a3 ... side surface, 16b ... outer peripheral surface, 16b1 ... upper surface, 16b2 ... lower surface, 16b3 ... side surface, 16c ... rear end surface, 16d ... front end surface, 16d1 ... lens surface

Claims (17)

A light distribution forming lens unit disposed in front of the light source, and configured to form a predetermined light distribution pattern by light from the light source that is transmitted forward through the light distribution forming lens unit In the vehicle lamp
A cylindrical shape including a front end portion surrounding the periphery of the light distribution forming lens portion and extending in a cylindrical shape from the front end portion to the light source side and surrounding a space between the light distribution forming lens portion and the light source Equipped with a light emitting lens part for appearance,
The outer peripheral surface of the light emitting lens portion for appearance includes a lower surface and a surface other than the lower surface,
The lower surface is configured as a diffuse reflection surface that enters the appearance light emitting lens portion from the inner peripheral surface of the appearance light emitting lens portion and diffuses and reflects light from the light source incident on the lower surface,
The surface other than the lower surface is configured as a diffusion surface that diffuses light from the light source that is incident on the appearance light emitting lens portion from the inner peripheral surface of the appearance light emitting lens portion and exits from the surface other than the lower surface. Vehicle lamps.   2. The vehicle according to claim 1, wherein an inner peripheral surface of the appearance light emitting lens portion is configured as a diffusion surface that diffuses light from the light source that enters the appearance light emitting lens portion from the inner peripheral surface. Light fixture. The light distribution forming lens portion is configured as a lens portion having a rectangular outer shape in front view,
The light emitting lens portion for appearance includes a front end portion that surrounds the periphery of the light distribution forming lens portion, and extends in a rectangular cylindrical shape from the front end portion to the light source side, and the light distribution forming lens portion and the light source It is configured as a rectangular cylindrical lens that surrounds the space between
3. The vehicular lamp according to claim 1, wherein an outer peripheral surface of the appearance light emitting lens portion is configured as a rectangular cylindrical surface surrounded by the lower surface and a surface other than the lower surface. The light distribution forming lens part is configured as a circular or elliptical lens part in front view,
The light emitting lens portion for appearance includes a front end portion surrounding the periphery of the light distribution forming lens portion, and extends from the front end portion to the light source side in a circular or elliptical cylindrical shape, and the light distribution forming lens portion It is configured as a circular or elliptical cylindrical lens portion that surrounds the space between the light source,
The vehicular lamp according to claim 1, wherein an outer peripheral surface of the appearance light emitting lens portion is configured as a circular or elliptical cylindrical surface surrounded by the lower surface and a surface other than the lower surface. The rear end surface of the appearance light emitting lens unit travels toward the front end surface of the appearance light emitting lens unit from the rear end surface as light from the light source incident on the appearance light emitting lens unit becomes a parallel light beam. The surface shape is configured to exit from the front end surface,
The vehicular lamp according to any one of claims 1 to 4, wherein a front end surface of the appearance light emitting lens portion is configured as a diffusion surface that diffuses light from the light source emitted from the front end surface. The rear end surface of the appearance light emitting lens unit travels toward the front end surface of the appearance light emitting lens unit from the rear end surface as light from the light source incident on the appearance light emitting lens unit becomes a parallel light beam. The surface shape is configured to exit from the front end surface,
The vehicular lamp according to any one of claims 1 to 4, wherein the front end surface of the appearance light emitting lens unit includes a plurality of lens surfaces with a focal point set in front of the front end surface.   The vehicular lamp according to any one of claims 1 to 6, wherein the diffusing surface and the diffusing and reflecting surface are a textured surface or a cut surface including a plurality of minute irregularities.   The vehicular lamp according to any one of claims 1 to 7, wherein the light distribution forming lens portion and the appearance light emitting lens portion are integrally molded.   It further includes an extension arranged in a state of surrounding a portion other than the part of the outer peripheral surface of the appearance light emitting lens portion so that a part of the outer peripheral surface of the appearance light emitting lens portion can be visually recognized from the outside. The vehicular lamp according to any one of claims 1 to 8. In a lens body configured to form a predetermined light distribution pattern,
A light distribution forming lens portion disposed in front of the light source;
A cylindrical shape including a front end portion surrounding the periphery of the light distribution forming lens portion and extending in a cylindrical shape from the front end portion to the light source side and surrounding a space between the light distribution forming lens portion and the light source A light emitting lens part for appearance,
The light distribution forming lens unit is configured as a lens unit that forms a predetermined light distribution pattern by light from the light source that is transmitted forward through the light distribution forming lens unit,
The outer peripheral surface of the light emitting lens portion for appearance includes a lower surface and a surface other than the lower surface,
The lower surface is configured as a diffuse reflection surface that enters the appearance light emitting lens portion from the inner peripheral surface of the appearance light emitting lens portion and diffuses and reflects light from the light source incident on the lower surface,
The surface other than the lower surface is configured as a diffusion surface that diffuses light from the light source that is incident on the appearance light emitting lens portion from the inner peripheral surface of the appearance light emitting lens portion and exits from the surface other than the lower surface. Lens body.   11. The lens body according to claim 10, wherein an inner peripheral surface of the appearance light emitting lens portion is configured as a diffusion surface that diffuses light from the light source that enters the appearance light emitting lens portion from the inner peripheral surface. . The light distribution forming lens portion is configured as a lens portion having a rectangular outer shape in front view,
The light emitting lens portion for appearance includes a front end portion that surrounds the periphery of the light distribution forming lens portion, and extends in a rectangular cylindrical shape from the front end portion to the light source side, and the light distribution forming lens portion and the light source It is configured as a rectangular cylindrical lens that surrounds the space between
The lens body according to claim 10 or 11, wherein an outer peripheral surface of the appearance light emitting lens portion is configured as a rectangular cylindrical surface surrounded by the lower surface and a surface other than the lower surface. The light distribution forming lens part is configured as a circular or elliptical lens part in front view,
The light emitting lens portion for appearance includes a front end portion surrounding the periphery of the light distribution forming lens portion, and extends from the front end portion to the light source side in a circular or elliptical cylindrical shape, and the light distribution forming lens portion It is configured as a circular or elliptical cylindrical lens portion that surrounds the space between the light source,
The lens body according to claim 10 or 11, wherein an outer peripheral surface of the appearance light emitting lens portion is configured as a circular or elliptical cylindrical surface surrounded by the lower surface and a surface other than the lower surface. The rear end surface of the appearance light emitting lens unit travels toward the front end surface of the appearance light emitting lens unit from the rear end surface as light from the light source incident on the appearance light emitting lens unit becomes a parallel light beam. The surface shape is configured to exit from the front end surface,
The lens body according to any one of claims 10 to 13, wherein a front end surface of the appearance light emitting lens portion is configured as a diffusion surface that diffuses light from the light source emitted from the front end surface. The rear end surface of the appearance light emitting lens unit travels toward the front end surface of the appearance light emitting lens unit from the rear end surface as light from the light source incident on the appearance light emitting lens unit becomes a parallel light beam. The surface shape is configured to exit from the front end surface,
The lens body according to any one of claims 10 to 13, wherein a front end surface of the appearance light emitting lens portion includes a plurality of lens surfaces with a focal point set in front of the lens.   The lens body according to any one of claims 10 to 15, wherein the diffusing surface and the diffusive reflecting surface are textured surfaces or cut surfaces including a plurality of minute irregularities.   The lens body according to any one of claims 10 to 16, wherein the light distribution forming lens portion and the appearance light emitting lens portion are integrally molded.