JP2020035699A - Vehicular lighting fixture - Google Patents

Abstract

To provide a vehicular lighting fixture which has suppressed light whose light distribution is not scheduled to be controlled on an emission surface of a compound optical lens being radiated frontward from the emission surface of the compound optical lens.SOLUTION: A vehicular lighting fixture includes a light source (22) and a compound optical lens (31) for radiating the light of the light source (22) frontward. The compound optical lens (31) is a lens in which an incident surface (31B) where light enters, an emission surface (31A) for radiating the light which has entered from the incident surface (31B) frontward and a shade part (31C) formed between the incident surface (31B) and the emission surface (31A) are molded integrally. The compound optical lens (31) includes a light scattering part (31F) formed further on the emission surface side (31A) than a top line (31CA) of the shade part (31C), and formed at a portion for reflecting the reflection light whose light distribution is not scheduled to be controlled on the emission surface (31A) toward the emission surface (31A).SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicular lamp.

  Patent Literature 1 discloses a vehicle lamp in which a low beam light distribution pattern is formed by a plurality of light source units having different light distribution characteristics using a compound optical lens in which a shade and a reflecting mirror are integrally formed on a lens itself. ing.

JP-A-2004-241349

  By the way, in the compound optical lens, in addition to the light that is reflected at a portion intended for reflection and is irradiated forward from the emission surface, the light that is reflected at a portion not intended for reflection and is emitted forward from the emission surface May occur.

  As described above, light that is reflected at a portion that is not intended for reflection and is emitted from the emission surface to the front side is harmful light because the light distribution is not scheduled to be controlled at the emission surface.

  The present invention has been made in view of such circumstances, and a vehicle in which light that is not scheduled to be subjected to light distribution control on an emission surface of a composite optical lens is suppressed from being emitted forward from the emission surface of the composite optical lens. It is an object to provide a lighting fixture.

The present invention is grasped by the following configurations to achieve the above object.
(1) A vehicular lamp of the present invention is a vehicular lamp including a light source and a compound optical lens that irradiates light of the light source to a front side, wherein the compound optical lens has an incident surface on which light is incident, An exit surface for irradiating light incident from the entrance surface to the front side, and a shade portion formed between the entrance surface and the exit surface are integrally formed lenses, and the compound optical lens is a shade. A light scattering portion formed on a portion of the emission surface closer to the emission surface than a top line of the portion and configured to reflect reflected light that is not scheduled to be subjected to light distribution control on the emission surface toward the emission surface.

(2) In the configuration of (1), the shade portion has a rear inclined surface inclined rearward from the top line, and the light scattering portion is reflected by the rear inclined surface. Light is formed directly on the portion of the compound optical lens to be irradiated.

(3) In the configuration of the above (1) or (2), the shade portion has a front inclined surface inclined forward from the top line, and the compound optical lens has a front inclined surface. A reflecting surface that reflects a part of the direct light toward at least a part of the front inclined surface is formed,
Light reflected by the reflection surface and further reflected by the front-side inclined surface is emitted from the emission surface as overhead light distribution.

(4) In any one of the above-described constitutions (1) to (3), the compound optical lens is formed above the top surface on the incident surface side with respect to the top line, and emits light forming a first light distribution pattern. A first reflector surface that reflects toward the exit surface, and a second reflector surface that is formed below the top line and below the incident surface side and reflects light that forms a condensed light distribution pattern toward the exit surface. And

(5) In the configuration of the above (4), the width of the position adjacent to the first reflector surface and the second reflector surface in the vehicle width direction is larger on the first reflector surface.

(6) In any one of the above-described constitutions (1) to (5), the incident surface has a concave shape in which the overall shape is depressed inside the compound optical lens, and the first light distribution pattern is located on the center side. The composite optical lens has a convex surface protruding outside the compound optical lens on which light for forming a smaller second light distribution pattern is incident.

  ADVANTAGE OF THE INVENTION According to this invention, the vehicle lamp which suppressed that the light which is not going to be light-distributed at the output surface of a compound optical lens is irradiated from the output surface of a compound optical lens to the front side can be suppressed.

It is a top view of the vehicles provided with the vehicular lamp of an embodiment concerning the present invention. It is an exploded perspective view of a lamp unit of an embodiment according to the present invention. 1 is a cross-sectional view of a compound optical lens according to an embodiment of the present invention. It is a perspective view of the compound optical lens which made the entrance surface side of the embodiment concerning the present invention visible. 1 is a perspective view of a compound optical lens according to an embodiment of the present invention, in which an emission surface side is visible. It is a figure for explaining a light scattering part of an embodiment concerning the present invention.

Hereinafter, a mode for carrying out the present invention (hereinafter, referred to as “embodiment”) will be described in detail with reference to the accompanying drawings.
The same elements are denoted by the same reference numerals or symbols throughout the description of the embodiments.

In the embodiment and the drawings, unless otherwise specified, “front” and “rear” indicate “forward” and “reverse” of the vehicle 102, respectively, and “up”, “down”, “ “Left” and “right” indicate directions viewed from a driver who gets on the vehicle 102, respectively.
Needless to say, “up” and “down” are also “up” and “down” in the vertical direction, and “left” and “right” are also “left” and “right” in the horizontal direction.

FIG. 1 is a plan view of a vehicle 102 provided with a vehicle lamp according to an embodiment of the present invention.
As shown in FIG. 1, the vehicular lamp according to the embodiment of the present invention is a vehicular headlamp (101L, 101R) provided on each of the left and right sides on the front side of a vehicle 102. Described as a lamp.

  The vehicle lamp of the present embodiment includes a housing (not shown) opened to the front of the vehicle and an outer lens (not shown) attached to the housing so as to cover the opening, and is formed by the housing and the outer lens. A lamp unit 1 (see FIG. 2) and the like are arranged in the lamp room.

FIG. 2 is an exploded perspective view of the lamp unit 1 according to the embodiment of the present invention.
As shown in FIG. 2, the lamp unit 1 includes a heat sink 10, a light source device 20 attached to the heat sink 10, an optical control member 30 disposed on the light source device 20, and a cover that covers a part of the optical control member 30. 40.

(Heat sink 10)
The heat sink 10 includes a base portion 11 on which the light source device 20 is disposed, a plurality of radiating fins 12 provided on the rear side of the base portion 11 and arranged in the vehicle width direction, and one side of the base portion 11 in the vertical direction (in FIG. And a pair of positioning pins 11A protruding forward and spaced apart in the vehicle width direction.

  A pair of screw holes 11B is formed in the base portion 11 at a position on the center side in the vehicle width direction and separated in the vertical direction. The pair of screw holes 11B will be described later. A pair of screws N are screwed and fixed so as to fix the light source device 20, the optical control member 30, and the cover 40 together.

  The radiation fins 12 each extend on the other side in the vertical direction (upper side in FIG. 2) than the base portion 11, and portions that extend in the vertical direction from the base portion 11 (upper portions in FIG. 2). However, it is shaped like a notch from the base portion 11 side to the rear side so as to be able to accommodate the connector connection portion 23B of the light source device 20 described later.

  In the present embodiment, the heat sink 10 is a heat sink 10 made of aluminum die-casting. However, the heat sink 10 is not limited to this, and may be formed using a metal or a resin having a high thermal conductivity.

(Light source device 20)
The light source device 20 includes a heat transfer member 21, a light source 22 disposed on the heat transfer member 21, an opening 23 </ b> A provided on the heat transfer member 21 and provided at a position corresponding to the light source 22, and an external connector. A connection portion 23 having a connector connection portion 23B to be connected.

  Note that the connector connection portion 23B is located on the other side (upper side in FIG. 2) in the vertical direction with respect to the heat transfer member 21, and is provided so that a part thereof protrudes rearward from the heat transfer member 21. As described above, this protruding portion is located at a portion shaped like a notch on the rear side of the radiation fin 12.

In the present embodiment, the heat transfer member 21 uses an aluminum plate having a larger outer shape than the light source 22. However, the material is not limited to aluminum, and a metal or resin other than aluminum having a high heat conductivity is used. And so on.
Then, the heat transfer member 21 plays a role of improving the cooling efficiency of the light source 22 by efficiently transmitting the heat to the heat sink 10 while quickly diffusing the heat generated by the light source 22 to a wide range.

The light source 22 includes a substrate 22A having a light-emitting region 22B that transmits light, and a light-emitting chip (not shown) that is disposed on the back surface side of the substrate 22A and emits light for causing the light-emitting region 22B to emit light. In the present embodiment, the light source is an LD light source (laser light source) using an LD chip (laser diode chip) as the light emitting chip, but may be an LED light source (light emitting diode light source) using an LED chip as the light emitting chip.
Note that the light source 22 (light emitting chip) of the present embodiment has a Lambertian distribution or a shape close to this, having a planar light emitting portion.

  However, it is preferable to use an LD light source as the light source 22 because the use of an LD light source as the light source 22 facilitates downsizing compared to the case of using an LED light source.

  The connection portion 23 is formed by, for example, insert molding using an electrically insulating resin having excellent heat resistance, and accommodates therein an electric wiring (not shown) for electrically connecting the light source 22 to the external connector. One end of the electric wiring (not shown) is led out to the opening 23A to be electrically connected to the light source 22, and the other end of the electric wiring (not shown) is a connector. It is led out into the connection part 23B and is electrically connected to an external connector.

  The light source device 20 includes a pair of positioning holes 24A through which a pair of positioning pins 11A provided on the base portion 11 pass, and a pair of positioning holes 24B provided at positions corresponding to screw screw holes 11B provided on the base portion 11. And a screw hole 24B, and can be fixed to the heat sink 10 by the screw N while being positioned by the positioning pin 11A.

(Optical control member 30)
The optical control member 30 includes a compound optical lens 31 for irradiating light from the light source 22 to the front side, and a fixing unit for disposing the compound optical lens 31 on the light source device 20 and fixing the compound optical lens 31 together with the light source device 20 to the heat sink 10. 32, and the composite optical lens 31 and the fixing portion 32 are members integrally formed of a transparent resin (for example, an acrylic resin or a polycarbonate resin).

  The fixing portion 32 includes a pair of leg portions 32A extending rearward from left and right side surfaces (left and right side surfaces in front of a top line 31CA of a shade portion 31C described later) which do not affect optical control of the compound optical lens 31. And a fixing base 32B provided so as to be connected to the pair of legs 32A.

  The base 32B has a pair of positioning holes 32BA through which a pair of positioning pins 11A provided on the base 11 pass, and a pair of screws provided at positions corresponding to the screw screw holes 11B provided on the base 11. Hole 32BB, and is fixed to the heat sink 10 together with the light source device 20 by the screw N while being positioned by the positioning pin 11A.

  The base portion 32B of the optical control member 30 is disposed on the connection portion 23 of the light source device 20, thereby avoiding contact with the heat transfer member 21 of the light source device 20, and the connection portion 23 is An acrylic resin (for example, a heat-resistant temperature of about 100 ° C.) having low heat resistance is used for the optical control member 30 by performing a function as a heat insulator provided between the heat transfer member 21 and the heat transfer member 21. Even if there is no problem.

(Cover 40)
The cover 40 has a substantially cylindrical shape that opens so as not to block the light-emitting surface 31A of the compound optical lens 31 that emits light and the light-entering surface 31B (not shown) that receives light, and covers the side surface of the compound optical lens 31. A cover portion 41 and a flange positioned on the rear end side of the cover portion 41 so as to protrude outward from the cover portion 41 and for fixing the optical control member 30 and the light source device 20 to the heat sink 10 And a part 42.

  In addition, the cover part 41 has a pair of legs that are cut away from the rear end side toward the front end side in the vehicle width direction so that the pair of legs 32A of the fixing part 32 of the composite optical lens 31 can be inserted. A notch 41A is provided.

  In addition, the flange portion 42 has one side in the vertical direction with reference to the position of the pair of notches 41A (the lower side in FIG. 2) in order to allow the legs 32A to be inserted into the pair of notches 41A. ) And the other side in the vertical direction (the upper side in FIG. 2).

  The flange portion 42 is formed on the flange portion 42 on one side (lower side in FIG. 2) in the vertical direction, and has a pair of positioning holes 42A through which a pair of positioning pins 11A provided on the base portion 11 pass. One is formed on each of the flange portions 42 on one side (the lower side in FIG. 2) and the other side (the upper side in FIG. 2) in the vertical direction, and corresponds to the screw screw holes 11 </ b> B provided in the base portion 11. And a pair of screw holes 42 </ b> B provided at positions, and is fixed to the heat sink 10 together with the optical control member 30 and the light source device 20 by screws N while being positioned by the positioning pins 11 </ b> A.

  The cover 40 is for suppressing light from leaking from a position other than the exit surface 31A of the composite optical lens 31. In the present embodiment, the cover 40 is formed of an opaque resin that does not transmit light. I have.

  However, the cover 40 may be formed of a transparent resin through which light is transmitted, and may have a surface on which a colored layer that suppresses light transmission is formed.

Next, the compound optical lens 31 will be described in detail with reference to FIGS.
FIG. 3 is a cross-sectional view of the compound optical lens 31, which is a cross-sectional view taken along a vertical direction along the lens optical axis Z and viewed from a side surface.
FIG. 3 also shows a light emitting region 22B of the light source 22 schematically described.
FIG. 4 is a perspective view of the composite optical lens 31 of the present embodiment in which the incident surface 31B side is visible, and FIG. 5 is a perspective view of the composite optical lens 31 of the present embodiment in which the exit surface 31A side is visible. is there.

As shown in FIGS. 3 and 4, the compound optical lens 31 includes a light incident surface 31B on which light from the light source 22 (see FIG. 3) is incident, and a fine light that irradiates light incident on the light incident surface 31B to the front side. This is a lens in which a light-emitting surface 31A that has a smooth curved surface protruding forward without irregularities and the like, and a shade portion 31C formed between the light-entering surface 31B and the light-emitting surface 31A are integrally formed.
In addition, as in the present embodiment, by not forming irregularities such as prisms on the exit surface 31A, it is possible to suppress the occurrence of light streaks and unevenness, and to form a low-beam light distribution pattern that does not cause discomfort to the driver. can do.

  The shade portion 31C is formed so as to form a substantially triangular depression inside the composite optical lens 31 from the vertically lower side of the position between the entrance surface 31B and the exit surface 31A of the composite optical lens 31, The position of the vertex of the triangular depression is set as the top line 31CA that matches the shape of the cutoff line.

  Note that the top line 31CA is formed such that a portion forming the upper side of the oblique cutoff line is located at or near the rear focal point of the emission surface 31A.

The composite optical lens 31 is formed above the top surface 31CA of the shade portion 31C on the incident surface 31B side (upper side in the vertical direction), and outputs the light L1 that forms the first light distribution pattern of the low beam light distribution pattern to the emission surface 31A. And a condensing light distribution pattern of a low beam light distribution pattern, which is formed on the lower side (vertical direction lower side) of the incident surface 31B from the top line 31CA, and a semi-dome-shaped first reflector surface 31D having a free-form surface that reflects toward the surface. And a free-form surface semi-dome-shaped second reflector surface 31E that reflects the light L2 forming the light toward the emission surface 31A.
In the present embodiment, since the first light distribution pattern is a diffuse light distribution pattern of a low beam light distribution pattern, the first light distribution pattern may be hereinafter referred to as a first diffuse light distribution pattern.

As can be seen from FIG. 4, the width in the vehicle width direction of the position adjacent to the first reflector surface 31D and the second reflector surface 31E is larger on the first reflector surface 31D, and the low-beam light distribution pattern is excellent. The first diffused light distribution pattern can be formed.
In addition, the front focal point of the basic optical path of the first reflector surface 31D and the second reflector surface 31E substantially coincides with the rear focal point of the emission surface 31A.

As described above, in the present embodiment, since the single diffused light distribution pattern and the condensed light distribution pattern of the low beam light distribution pattern can be formed by one compound optical lens 31, the lamp unit 1 for forming the low beam light distribution pattern is used. There is no need to provide a large number of such lamps, and the vehicle lamp can be reduced in size.
Note that near the upper end of the cutoff line, the spectral distribution of the light distribution pattern with a slightly yellow tint and the spectral distribution of the bluish tint of the first diffused light distribution pattern are multiplexed, so that the spectral color can be reduced.

On the other hand, in the present embodiment, the light incident surface 31B has a concave shape whose entire shape is recessed inside the compound optical lens 31, and the light L3 forming the second light distribution pattern of the low beam light distribution pattern is incident on the center side. The composite optical lens 31 has a convex surface 31BA protruding outside.
In the present embodiment, the second light distribution pattern is a medium-diffusion light distribution pattern that is smaller than the first diffusion light distribution pattern of the low-beam light distribution pattern. Sometimes referred to as a light pattern.

  As shown in FIG. 4, the convex surface 31BA has a substantially rectangular (square) outer shape, and is formed such that the front focal point is located near the top line 31CA or near the top line 31CA as shown in FIG. ing.

Then, since the light source 22 is positioned behind the convex surface 31BA so that the center of the convex surface 31BA and the light emission center of the light source 22 substantially match in the vehicle width direction and the vertical direction, light incident from the convex surface 31BA is greatly refracted. The light is condensed gently toward the top line 31CA, and further gently spreads from the front-side focal point toward the emission surface 31A to form a good middle-diffusion light distribution pattern.
More precisely, the convex surface 31BA condenses light in the vertical direction, but diffuses light so as to spread in the horizontal direction.

  As described above, in the present embodiment, the second diffused light distribution pattern, which is a medium diffused light distribution pattern (medium diffused light distribution pattern), multiplexed with the condensed light distribution pattern and the first diffused light distribution pattern is also formed. Therefore, the luminous intensity distribution as the low beam light distribution pattern can be made more favorable.

Then, the light is emitted toward the front side because the incident surface 31B outside the convex surface 31BA has a shape that spreads rearward, and the entire shape of the incident surface 31B has a concave shape that is recessed inside the compound optical lens 31. In consideration of the spread of the light from the light source 22, the light can be made to enter the composite optical lens 31 without waste.
In addition, the concave rear focal point concaved inside the compound optical lens 31 having the entire shape of the incident surface 31B substantially coincides with the rear focal points of the first reflector surface 31D and the second reflector surface 31E. , And the light emission center of the light source 22.

  By the way, if the contrast is too sharp at the cut-off line of the low-beam light distribution pattern, visibility deteriorates. In this embodiment, as shown in FIG. Is formed in a shape in which a part (the lower part in this example) of the light L1 forming the light is irradiated above the cutoff line of the condensed light distribution pattern and the second diffused light distribution pattern. .

  Specifically, the lower curvature of the exit surface 31A is smoothly adjusted so that light is irradiated upward from the lens optical axis Z by about 0.2 to 0.5 degrees.

  For this reason, light is also irradiated above the cutoff lines of the condensing light distribution pattern and the second diffused light distribution pattern, and the sharpness of the cutoff line is appropriately reduced, so that visibility can be improved.

Further, in the present embodiment, the composite optical lens 31 forms not only a low beam light distribution pattern but also an overhead light distribution.
Specifically, since the shade portion 31C is formed so as to form a substantially triangular recess inside the compound optical lens 31, the shade portion 31C is inclined forward from the top line 31CA. It has an inclined surface 31CC.

  Since the front side inclined surface 31CC can be used to reflect light obliquely upward, in the present embodiment, a part of the direct light from the light source 22 is applied to the compound optical lens 31 by at least one of the front side inclined surface 31CC. The light L4 reflected by the reflection surface 31G and further reflected by the front inclined surface 31CC is emitted from the emission surface 31A as an overhead light distribution, as forming a reflection surface 31G that reflects toward the portion. ing.

  Specifically, as shown in FIGS. 3 to 5, a part of the direct light from the light source 22 is placed above a position between the first reflector surface 31D of the compound optical lens 31 and a light scattering portion 31F described later. A reflecting surface 31G that reflects toward at least a part of the front inclined surface 31CC is formed.

  In the present embodiment, as shown in FIGS. 3 and 4, a portion of the front inclined surface 31 </ b> CC irradiated with the light reflected by the reflection surface 31 </ b> G is used to adjust the reflection angle toward the emission surface 31 </ b> A. It is assumed that a reflection angle adjusting unit 31CCA is provided.

  However, it is not essential that the front-side inclined surface 31CC include the reflection angle adjusting portion 31CCA, and the light reflected by the reflection surface 31G is reflected on the emission surface 31A at a reflection angle suitable for overhead light distribution. The inclined state of the entire front inclined surface 31 </ b> CC may be set so as to be reflected toward.

  Since the first reflector surface 31D, the second reflector surface 31E, the front inclined surface 31CC (only the reflection angle adjusting portion 31CCA), and the reflection surface 31G are required to have a function of reflecting light, light reflection is required. White or silver coloring may be applied so as to increase the rate.

  As described above, according to the present embodiment, the light source 22 is disposed so as to irradiate light to the front side, and the composite optical lens 31 utilizes the spread of light to make the largest low-beam light distribution among the lights spread upward. A diffuse light distribution pattern of the pattern (first diffuse light distribution pattern) is formed, a condensed light distribution pattern of the low beam light distribution pattern is formed by light spreading downward, and middle diffusion of the low beam light distribution pattern is performed by light at the center. Since a light distribution pattern (second diffused light distribution pattern) is formed, a good low-beam light distribution pattern can be formed without using a large number of lamp units 1 and the front inclined surface 31CC of the shade portion 31C. The overhead light distribution can be formed by forming the reflection surface 31G that reflects toward a part of the light.

  By the way, in the composite optical lens 31, there is a case where light that is not scheduled to be subjected to light distribution control on the exit surface 31A is irradiated from the exit surface 31A of the composite optical lens 31 to the front side, and in order to suppress such light irradiation. In the present embodiment, the compound optical lens 31 includes the light scattering unit 31F. Hereinafter, the light scattering unit 31F will be described in detail.

FIG. 6 is a diagram for explaining the light scattering portion 31F, and is a cross-sectional view corresponding to FIG.
As shown in FIG. 6, since the shade portion 31C is formed so as to form a substantially triangular depression inside the compound optical lens 31, the shade portion 31C is inclined rearward from the top line 31CA. It has a rear-side inclined surface 31CB, and is a part of the light reflected by the first reflector surface 31D, a part of the light reflected by the second reflector surface 31E, and the direct light from the light source 22. When a part of the light is reflected by the rear inclined surface 31CB, a part of the reflected light is reflected by the upper surface on the front side from the top line 31CA, and is emitted from the emission surface 31A to the front side.

  Such light is light that is not scheduled to be light-distributed on the emission surface 31A, and may be harmful light emitted to the lamp room or the vicinity of the vehicle.

  Therefore, as shown in FIG. 6, the complex optical lens 31 is formed on the emission surface 31A side from the top line 31CA of the shade portion 31C, and the reflected light that is not scheduled to be light-distributed on the emission surface 31A toward the emission surface 31A. And a light scattering portion 31F formed at a portion that reflects light.

  Specifically, the light scattering portion 31F is formed at the portion of the composite optical lens 31 where the light reflected by the rear-side inclined surface 31CB is directly radiated. As a result, as shown in FIG. The light is scattered, and most of the light becomes light L5 emitted from the light scattering portion 31F, and is shielded by the cover 40 (see FIG. 2) so as not to go outside.

  On the other hand, a part of the light scattered by the light scattering portion 31F is the light L6 emitted from the emission surface 31A to the front side. It does not cause harm even if it is irradiated.

Although the light scattering portion 31F is formed by forming fine irregularities (for example, prisms) on the surface of the composite optical lens 31, the light scattering portion 31F is not limited to this as long as the structure can efficiently scatter light.
Further, a light scattering portion may be provided also on the rear side inclined surface 31CB, and by doing so, it is possible to further reduce the amount of light that may be irradiated to the lamp room or the vicinity of the vehicle.

  However, in the present embodiment, the portion that reflects the reflected light that is not scheduled to be subjected to the light distribution control on the emission surface 31A toward the emission surface 31A is a composite optic in which the light reflected on the rear inclined surface 31CB is directly irradiated. Since it is a part of the lens 31, the light scattering part 31F is provided there. However, depending on the design of the compound optical lens 31, the light scattering part 31F is provided in a part different from this part. The reflected light is not limited to this part, and the composite optical lens 31 appropriately does not control the light distribution on the emission surface 31A toward the emission surface 31A on the emission surface 31A side from the top line 31CA of the shade portion 31C. The light scattering portion 31F may be provided at a portion that reflects light.

  As described above, according to the present embodiment, the composite optical lens 31 is formed on the emission surface 31A side from the top line 31CA of the shade portion 31C, and the light distribution control is performed on the emission surface 31A toward the emission surface 31A. Since the light scattering portion 31F is formed at a portion that reflects the reflected light that is not reflected, light that is not scheduled to be subjected to light distribution control on the emission surface 31A of the composite optical lens 31 is directed forward from the emission surface 31A of the composite optical lens 31. Irradiation is suppressed, and harmful light emitted to the lamp room and the vicinity of the vehicle can be suppressed.

  As described above, the present invention has been described based on the specific embodiments. However, the present invention is not limited to the above-described embodiments, and modifications and improvements made to the above-described embodiments may also be achieved. It will be apparent to those skilled in the art from the description of the claims.

DESCRIPTION OF SYMBOLS 1 Lamp unit 10 Heat sink 11 Base part 11A Positioning pin 11B Screw screw hole 12 Radiation fin 20 Light source device 21 Heat transfer member 22 Light source 22A Substrate 22B Light emitting area 23 Connection part 23A Opening 23B Connector connection part 24A Positioning hole 24B Screw hole 30 Optical control member 31 Composite optical lens 31A Outgoing surface 31B Incident surface 31BA Convex surface 31C Shade portion 31CA Top line 31CB Back side inclined surface 31CC Front side inclined surface 31CCA Reflection angle adjusting unit 31D First reflector surface 31E Second reflector surface 31F Light scattering unit 31G Reflecting surface 32 Fixed portion 32A Leg 32B Base 32BA Positioning hole 32BB Screw hole 40 Cover 41 Cover 41A Notch 42 Flange 42A Positioning hole 42B Screw holes L1, L2, L3, L4, L5, L6 Optical N screw Z Len Optical axis 101L, headlamp 102 vehicles for 101R vehicle

Claims (6)

A vehicular lamp including a light source and a compound optical lens that irradiates light of the light source to a front side,
The compound optical lens includes an incident surface on which light is incident, an exit surface for irradiating light incident from the incident surface to a front side, and a shade portion formed between the incident surface and the exit surface. A molded lens,
The compound optical lens is formed closer to the light exit surface than the top line of the shade portion, and light scattering is formed at a portion that reflects reflected light that is not scheduled to be light distribution controlled at the light exit surface toward the light exit surface. A vehicle lighting device comprising a part. The shade portion has a rear inclined surface inclined rearward from the top line,
2. The vehicular lamp according to claim 1, wherein the light scattering portion is formed at a portion of the composite optical lens to which light reflected by the rear-side inclined surface is directly irradiated. 3. The shade portion has a front inclined surface inclined forward from the top line,
The compound optical lens has a reflecting surface that reflects a part of the direct light from the light source toward at least a part of the front-side inclined surface,
The vehicular lamp according to claim 1, wherein the light reflected by the reflection surface and further reflected by the front-side inclined surface is emitted from the emission surface as overhead light distribution. . The composite optical lens,
A first reflector surface formed above the incident surface side of the top line and reflecting light forming a first light distribution pattern toward the emission surface;
A second reflector surface formed below the top line below the incident surface and reflecting light forming a condensed light distribution pattern toward the emission surface. The vehicular lamp according to any one of claims 1 to 3.   The vehicular lamp according to claim 4, wherein a width in a vehicle width direction of a position adjacent to the first reflector surface and the second reflector surface is larger on the first reflector surface.   The incident surface is a concave surface having an overall shape that is recessed inside the compound optical lens, and a light that forms a second light distribution pattern smaller than the first light distribution pattern is incident on the center side of the compound optical lens. The vehicular lamp according to any one of claims 1 to 5, further comprising a convex surface protruding outward.