WO2021141052A1

WO2021141052A1 - Vehicle lighting tool

Info

Publication number: WO2021141052A1
Application number: PCT/JP2021/000230
Authority: WO
Inventors: 洋弥今村; 鈴木　英治; 悠二大橋
Original assignee: 市光工業株式会社
Priority date: 2020-01-06
Filing date: 2021-01-06
Publication date: 2021-07-15

Abstract

Provided is a vehicle lighting tool capable of appropriately forming an on-coming vehicle passing light distribution pattern and a traveling light distribution pattern using light from a first light source and a second light source while providing these light sources on the same substrate.　A vehicle lighting tool 10 is provided with: a first light source 11 for emitting light L1 that forms an on-coming vehicle passing light distribution pattern LP; a second light source 12 for emitting light L2 that forms a traveling light distribution pattern HP; a projection lens 17 for forming the on-coming vehicle passing light distribution pattern LP by projecting the light L1 to the front side in the front-rear direction in which a lens axis La extends and for forming the traveling light distribution pattern HP by projecting the light L2 to the front side in the front-rear direction; and a substrate 18 on which the first light source 11 and the second light source 12 are provided. The respective outgoing light axes Li of the first light source 11 and the second light source 12 are parallel to each other. The first light source 11 and the second light source 12 are inclined at inclination angles with respect to the front-rear direction. The second light source 12 is disposed at a position away from the projection lens 17 relative to the first light source 11 in the front-rear direction.

Description

Vehicle lighting

This disclosure relates to vehicle lighting equipment.

In vehicle lighting fixtures, light from the first light source is emitted from a projection lens to form a passing light distribution pattern, and light from a second light source is emitted from a projection lens to form a traveling light distribution pattern. is there.

It is considered that such a vehicle lamp has a simple configuration by providing the first light source and the second light source on the same substrate (see, for example, Patent Document 1 and the like).

JP-A-2017-199660

Here, in the above-mentioned vehicle lighting equipment, the light from the first light source and the light from the second light source are crossed and then projected by the projection lens to obtain a light distribution pattern for passing and a light distribution pattern for traveling. Form. On the other hand, the above-mentioned vehicle lamp generally emits light in a direction in which the first light source and the second light source are orthogonal to the substrate. Therefore, the above-mentioned vehicle lamps are improved in that the first light source and the second light source are provided on the same substrate, and the light from them appropriately forms a light distribution pattern for passing and a light distribution pattern for traveling. There is room.

The present disclosure has been made in view of the above circumstances, and while the first light source and the second light source are provided on the same substrate, the light distribution pattern for passing and the light distribution pattern for traveling are appropriately provided by the light from them. It is an object of the present invention to provide a vehicle lamp that can be formed.

The vehicle lighting equipment of the present disclosure 1 includes a first light source that emits light that forms a light distribution pattern for passing, a second light source that emits light that forms a light distribution pattern for traveling, and light from the first light source. Is projected onto the front side in the front-rear direction in which the lens axis extends to form the passing light distribution pattern, and the light from the second light source is projected onto the front side in the front-rear direction to form the traveling light distribution pattern. The projection lens, the first light source, and the substrate on which the second light source is provided are provided, and the first light source and the second light source have their emission light axes parallel to each other. The second light source is inclined so as to have a dip angle with respect to the front-rear direction, and the second light source is provided at a position farther from the projection lens than the first light source in the front-rear direction.

The first light source and the second light source have an emission angle of 30 to 50 degrees with respect to the front-rear direction.

A plurality of the first light sources are arranged in the horizontal direction, and the light emitted from the plurality of the first light sources is guided to the projection lens between the plurality of the first light sources and the projection lens. The lens light guide portions are individually provided corresponding to the plurality of first light sources, and the plurality of lens light guide portions have a light guide emitting surface directed to the projection lens, and as the distance from the lens axis increases. The inclination angle of the light source emitting surface with respect to the orthogonal surface orthogonal to the front-rear direction becomes large.
A shade is provided between the first light source and the second light source to block a part of the light from the first light source to form a cut-off line in the passing light distribution pattern. The dip angle is halved of the angle formed by the emitted optical axis with respect to the front-rear direction.

A plurality of the first light sources are arranged side by side in the horizontal direction, and the distance between the adjacent first light sources increases as the distance from the lens axis increases.

In the projection lens, a lower lens portion and an upper lens portion are set around the lens axis, in the lower lens portion, a lower focus is set on the lens axis, and in the upper lens portion, the lower focus is set. An upper focal point, which has a shorter focal distance than the lower focal point, is set on the lens axis.

The vehicle lighting equipment of the present disclosure 2 has a first light source that emits light that forms a light distribution pattern for passing each other, and a plurality of second light sources that emit light that forms a light distribution pattern for traveling, which is composed of a plurality of partially distributed light regions. The light source and the light from the first light source are projected to the front of the vehicle to form the passing light distribution pattern, and the light from a plurality of the second light sources is projected to the front of the vehicle to form the traveling light distribution pattern. A projection lens forming the above, and a plurality of lens light guide portions that are individually provided corresponding to the plurality of the second light sources and guide the light emitted from the corresponding second light sources to the projection lens. The lens light guide portion has a light guide incident surface facing the second light source, and the light guide incident surface is a curved surface having at least a part convex toward the second light source side.

The lens light guide unit includes a light guide reflecting surface that includes an intersection with an exit light axis of the second light source and reflects light from the second light source, and a guide that emits light reflected by the light guide reflecting surface. The light guide reflecting surface has a light emitting surface, and the light guide reflecting surface is a curved surface that collects light from the second light source in the vicinity of the rear focal point of the projection lens by reflection.

The light guide reflecting surface is an incident side light guide reflecting surface provided on the lower lower surface in the vertical direction in the vicinity of the light guide incident surface in the lens light guide portion, and the light guide incident surface is the first light guide incident surface. It is a curved surface that refracts the light from the two light sources toward the light guide incident surface side on the lower surface of the lens light guide portion.

The lens light guide portion has an exit side light guide reflection surface that reflects a part of the light reflected by the incident side light guide reflection surface toward the light guide emission surface, and the exit side light guide reflection surface. Is a curved surface that is convex on the side opposite to the light guide reflection surface on the incident side.

The light guide reflection surface on the exit side has a tangent line at the tip on the light guide exit surface side of 5 to 10 degrees with respect to a straight line connecting the intersection and the point where the light guide reflection surface on the incident side concentrates. It is characterized by making an angle.

The light guide emission surface is orthogonal to a straight line connecting the intersection and the point where the reflected light from the incident side light guide reflection surface is collected.

According to the vehicle lighting equipment of the present disclosure, while providing the first light source and the second light source on the same substrate, it is possible to appropriately form a passing light distribution pattern and a traveling light distribution pattern with the light from them.

It is explanatory drawing which shows the structure of the vehicle lamp as an example which concerns on one Embodiment of the vehicle lamp which concerns on this disclosure. It is sectional drawing obtained along the line II of FIG. It is explanatory drawing which shows the structure of the 1st lens light guide part of a vehicle lamp. It is explanatory drawing which shows the structure of the 2nd lens light guide part of a vehicle lamp. It is explanatory drawing which shows the light distribution pattern for passing. It is explanatory drawing which shows the light distribution pattern for traveling. It is explanatory drawing which shows the state which overlapped with the light distribution pattern for running and the light distribution pattern for passing. It is sectional drawing obtained along the line II of FIG. It is explanatory drawing which shows the structure of the 2nd lens light guide part of a vehicle lamp. It is explanatory drawing which shows the structure of the 2nd lens light guide part. It is explanatory drawing which shows the structure of the 2nd light guide entrance surface of the 2nd lens light guide part.

Hereinafter, Example 1 of the vehicle lamp 10 as an embodiment of the vehicle lamp according to the present disclosure will be described with reference to FIGS. 1 to 7. In FIG. 2, the hatch showing the cross section is omitted in order to avoid complication.

The vehicle lamp 10 is used as a lamp used in a vehicle such as an automobile, and is used, for example, in a head lamp, a fog lamp, or the like. The vehicle lighting fixture 10 has an optical axis adjustment mechanism for the vertical direction and an optical axis adjustment for the width direction in a lamp chamber formed by covering the open front end of the lamp housing with an outer lens on both the left and right sides of the front portion of the vehicle. It is provided via a mechanism. In the following description, in the vehicle lighting equipment 10, when the direction in which the lens axis La of the projection lens 17 which is the direction of irradiating light extends is the front-rear direction (Z in the drawing) and the front-rear direction is along the horizontal plane. The vertical direction is the vertical direction (Y in the drawing), and the direction orthogonal to the front-back direction and the vertical direction (horizontal direction) is the width direction (X in the drawing). The front side in the front-rear direction points to the front of the vehicle in the vehicle lighting tool 10.

As shown in FIGS. 1 and 2, the vehicle lamp 10 includes a plurality of first light sources 11, a plurality of second light sources 12, a heat sink member 13, a first light guide lens 14, a second light guide lens 15, and a shade 16. And a projection lens 17 are provided to form a headlight unit. In the vehicle lamp 10, the front-rear direction is defined by the lens axis La of the projection lens 17. The lens axis La is an axis that is the optical center of the projection lens 17.

The plurality of first light sources 11 are aligned in the width direction, and in Example 1, seven (see FIG. 3) are aligned. Each first light source 11 is composed of a light emitting element such as an LED (Light Emitting Diode), and each is mounted on a substrate 18. The substrate 18 has a flat plate shape and is fixed to the front surface 13a of the heat sink member 13 in a state of being inclined with respect to the front-rear direction. Each of the first light sources 11 is appropriately lit by being supplied with electric power from the lighting control circuit. The seven first light sources 11 are arranged in the width direction, with one in the middle provided on the lens axis La in a plane orthogonal to the vertical direction, and the distance is increased toward the outside in the width direction. (See Fig. 3). In the first embodiment, as an example of the interval in the width direction of each first light source 11, the interval from the center position on the lens axis La to both sides is 6 mm, the interval from them to the outside of the neighbor is 7 mm, and the distance from them to the neighbor is set to 7 mm. The distance to the outermost side, which is the outer side of the lens, is 18 mm. If the number and spacing of the first light sources 11 are appropriately set, the spacing may be uniform or the spacing may be irregular, and the configuration is not limited to that of the first embodiment.

The plurality of second light sources 12 are aligned in the width direction, and in Example 1, 12 (see FIG. 4) are aligned. Each of the second light sources 12 is composed of a light emitting element such as an LED, and is on the same plane as the first light source 11 on the same substrate 18 as the first light source 11 on the lower side in the vertical direction and the rear side in the front-rear direction. Implemented above. Therefore, the substrate 18 and the front surface 13a have a normal direction as a dip angle with respect to the front-rear direction on a surface including the front-rear direction and the up-down direction. Each of the second light sources 12 is appropriately turned on all at once or individually by being supplied with electric power from the lighting control circuit. The number of the second light sources 12 may be appropriately set, and is not limited to the configuration of the first embodiment.

Each of the first light source 11 and each second light source 12 emits light from a plane light emitting unit, and the emission optical axis Li is set in a direction orthogonal to the mounted substrate 18. In the following, what is emitted by each of the first light sources 11 is referred to as light L1, and what is emitted by each of the second light sources 12 is referred to as light L2. The first light source 11 and the second light source 12 are mounted on the same substrate 18, so that their respective emission optical axes Li are parallel. Each emission optical axis Li has a dip angle in the range of 30 to 50 degrees with respect to the front-rear direction, and is 45 degrees in the first embodiment. In the first embodiment, each of the emitted optical axes Li is set by determining an angle with respect to the front-rear direction on the substrate 18.

The heat sink member 13 is a heat radiating member that releases heat generated by each of the first light sources 11 and each of the second light sources 12 to the outside, and is made of a metal material or a resin material having high thermal conductivity. In the heat sink member 13, a plurality of plate-shaped heat radiating fins 13b are provided in parallel on the side opposite to the front surface 13a (see FIG. 1). In the heat sink member 13, the substrate 18 is attached to the front surface 13a so that each emission optical axis Li has the above angle.

The first light guide lens 14 guides the light L1 emitted from each of the first light sources 11 mounted on the substrate 18 to the projection lens 17. The first light guide lens 14 is made of a transparent resin, and as shown in FIG. 3, seven first lens light guide portions arranged in the width direction individually corresponding to each first light source 11. Has 21. Each first lens light guide unit 21 has a first light guide incident surface 22 facing the corresponding first light source 11, and a first light guide exit surface 23 directed toward the projection lens 17.

As shown in a partially enlarged view of FIG. 2, each first light guide incident surface 22 has an overall shape recessed inside the first lens light guide portion 21 (on the side opposite to the first light source 11). It has a curved incident surface 22a that is convexly curved outward at the center thereof, and an annular incident surface 22b that surrounds the curved incident surface 22a. Further, around each first light guide incident surface 22, a conical reflecting surface 22c surrounding the annular incident surface 22b is provided. Each curved incident surface 22a substantially coincides with the light emitting center of the corresponding first light source 11 with a focal point on the rear side, and the light L1 emitted from the first light source 11 travels parallel to the emitted optical axis Li. Light is incident on the light source 21 of the first lens. The parallel light (parallel light) refers to light in a state in which light L1 is collimated by passing through a curved incident surface 22a.

The annular incident surface 22b is provided so as to project toward each first light source 11, and among the light L1 from the first light source 11, the light L1 that does not travel to the curved incident surface 22a is directed to the first lens light guide portion 21. Make it incident. The reflecting surface 22c is formed at a position where the light L1 incident on the first light guide lens 14 travels from the annular incident surface 22b. When the light L1 incident from the annular incident surface 22b is reflected, the reflecting surface 22c is a parallel light traveling in parallel with the emitted light axis Li. The reflecting surface 22c may reflect the light L1 by utilizing total reflection, or may reflect the light L1 by adhering aluminum, silver, or the like by vapor deposition, painting, or the like. From these facts, each of the first light guide incident surfaces 22 advances the light L1 emitted from the corresponding first light source 11 into the first light guide lens 14 as parallel light traveling in parallel with the emitted light axis Li. Then, it leads to the first light guide emitting surface 23.

Each first light guide exit surface 23 emits light L1 incident from the first light guide incident surface 22 to be parallel light toward the projection lens 17. Each first light guide emitting surface 23 has an upper emitting surface portion 23a and a lower emitting surface portion 23b in a cross section orthogonal to the width direction. Each upper exit surface portion 23a is provided in a region where the light L1 reflected by the reflection surface 22c located above the curved incident surface 22a travels, and is a concave surface that is convexly curved toward the first light guide incident surface 22 side. ing. Each upper exit surface portion 23a is made to travel toward the lower lens portion 41 of the projection lens 17, which will be described later, by refracting the light L1 which is made parallel light through the first light guide incident surface 22. In each lower emitting surface portion 23b, the focal point on the front side (projection lens 17 side) is arranged on the focal plane (image plane) including the lower focal point Fd of the lower lens portion 41 in the vicinity of the tip edge 16a of the shade 16. It has been set. Each lower exit surface portion 23b refracts the light L1 which has been made parallel light through the first light guide incident surface 22 so that the light L1 is focused in the vicinity of the tip edge 16a.

As shown in FIG. 3, the seven first light guide emitting surfaces 23 have an orthogonal plane Op in which the one in the center of the first lens light guide unit 21 is orthogonal to the lens axis La in a plane orthogonal to the vertical direction. It is substantially parallel, and when it deviates from the lens axis La, it is inclined with respect to the orthogonal plane Op so as to move outward in the width direction toward the rear side (first light source 11 side). Then, the inclination angles of the seven first light guide emitting surfaces 23 with respect to the orthogonal surface Op are increased toward the outside in the width direction. That is, the seven first light guide emitting surfaces 23 have their front focal points aligned on the focal planes including the lower focal point Fd in the vicinity of the tip edge 16a, in the width direction of the corresponding first light source 11. The inclination angle with respect to the orthogonal plane Op is set according to the distance from the lens shaft La, that is, the distance from the lens shaft La in the width direction of the first lens light guide unit 21 provided.

The first light guide lens 14 is connected to each other by the connecting portion 24 in a state where each first lens light guide portion 21 has the above positional relationship. In the first light guide lens 14, the connecting portion 24 is fixed to the lens holder or the heat sink member 13 to which the heat sink member 13 and the projection lens 17 are assembled, so that the first lens guide to the first light source 11 and the projection lens 17 is obtained. The positional relationship of the light unit 21 is set.

The second light guide lens 15 guides the light L2 emitted from each of the second light sources 12 mounted on the substrate 18 to the projection lens 17. The second light guide lens 15 is made of a transparent resin, and as shown in FIG. 4, twelve second lens light guide portions arranged in the width direction individually corresponding to each second light source 12. Has 31. Each second lens light guide unit 31 has twelve long rod-shaped portions 32 extending toward the projection lens 17 side on the second light source 12 side, that is, the substrate 18 side, and each rod-shaped portion 32 is in the width direction. They are arranged in parallel at intervals. Further, in each second lens light guide portion 31, each rod-shaped portion 32 is integrated with a plate-shaped portion 33 on the projection lens 17 side, and has a plate shape that expands in the width direction.

In each second lens light guide unit 31, the portion of each rod-shaped portion 32 facing the second light source 12 is designated as the second light guide incident surface 34, and the portion of the plate-shaped portion 33 facing the projection lens 17 side is the second. 2 The light guide emitting surface 35 is used. Therefore, the second light guide incident surface 34 is formed into 12 surfaces individually facing the 12 second light sources 12, and the second light guide exit surface 35 is the 12 second lens light guide portions 31. Is a single surface connected in the width direction. In addition, each second lens light guide unit 31 is provided with a light guide reflecting surface 36 as shown in FIG. The light guide reflecting surface 36 is provided on the lower side in the vertical direction in the vicinity of the second light guide incident surface 34 (mainly the rod-shaped portion 32) in the second lens light guide unit 31, and the second light guide incident surface 36 is provided. The light L2 incident from the surface 34 is reflected on the second light guide emitting surface 35 side, that is, on the front side in the front-rear direction and on the upper side. The light guide reflecting surface 36 may have a structure that utilizes total reflection, a reflection process, or another configuration as long as it reflects as described above. The second light guide emitting surface 35 emits the light L2 reflected by the light guide reflecting surface 36 toward the projection lens 17. Further, in each second lens light guide unit 31, in order to guide the light L2 incident from the second light guide incident surface 34 to the second light guide exit surface 35 side, a reflection surface may be provided at other locations as well. Well, it is not limited to the configuration of the first embodiment.

As shown in FIGS. 1 and 2, the shade 16 is provided on the second light guide lens 15 and has a plate shape extending in the width direction. Therefore, the shade 16 is provided between the optical path from each of the first light sources 11 to pass through the first light guide lens 14 and the optical path from each of the second light sources 12 to pass through the second light guide lens 15. The shade 16 has an angle with respect to the front-rear direction smaller than each emission light axis Li of each first light source 11 and each second light source 12 on a plane orthogonal to the width direction. It is said to be 22.5 degrees, which is half the angle that Li makes. The shade 16 is fixed to a lens holder that combines the heat sink member 13 and the projection lens 17, so that the above positional relationship is set.

The shade 16 has a shape in which the front tip edge 16a in the front-rear direction is joined by two horizontal edges having different positions in the vertical direction at an inclined edge (see FIG. 1). The shade 16 is for passing by by blocking a part of the light L1 emitted from each of the first light sources 11 and guided by the first light guide lens 14 (each of the first lens light guide portions 21) by the tip edge 16a. A cut-off line CL (see FIG. 5) is formed by connecting two horizontal cut-off lines with an inclined cut-off line on the upper edge of the light distribution pattern LP. The size of the shade 16 may be appropriately set as long as it forms a cut-off line CL at the tip edge 16a, and is not limited to the configuration of the first embodiment.

The upper surface of the shade 16 in the vertical direction is a reflective surface 16b. The reflecting surface 16b propagates to the projection lens 17 by reflecting the light L1 from each of the first light sources 11 guided by the first light guide lens 14. Therefore, the shade 16 can increase the utilization efficiency of the light L1 from each of the first light sources 11. In addition, the shade 16 has a dip angle that is halved of the angle formed by each emission light axis Li of each first light source 11 with respect to the front-rear direction. Therefore, the shade 16 can reflect the light L1 along the emission optical axis Li from the first light source 11 guided by the first light guide lens 14 in a direction parallel to the lens axis La of the projection lens 17. Further, the shade 16 can reflect another light L1 from the first light source 11 guided by the first light guide lens 14 in a direction close to parallel to the lens axis La. From these facts, the shade 16 allows the light L1 from the first light source 11 passing through the first light guide lens 14 to travel in the direction parallel to or close to the lens axis La toward the vicinity of the lens axis La. it can.

The projection lens 17 is a convex lens, and in the first embodiment, the exit surface 17a is a convex surface and the incident surface 17b is a flat surface. As long as the projection lens 17 is a convex lens as a whole, the exit surface 17a may be a flat surface or a concave surface, and the incident surface 17b may be a convex surface or a concave surface, and is not limited to the configuration of the first embodiment. The projection lens 17 is supported by the lens holder. The lens holder is in a state where the projection lens 17 is positioned with respect to each of the first light source 11, each second light source 12, the first light guide lens 14, the second light guide lens 15, and the shade 16 mounted on the substrate 18. , Assembled to the heat sink member 13.

As shown in FIG. 2, the projection lens 17 has a lower lens portion 41 located on the lower side and an upper lens portion 42 located on the upper side. Both lens portions (41, 42) have different curvatures of the exit surface 17a in the cross section in the radial direction from the lens axis La, and have different focal lengths at each. In the lower lens portion 41, the lower focal point Fd on the rear side in the projection direction is set to be in the vicinity of the tip edge 16a of the shade plate 16 on the lens axis La. In the upper lens portion 42, the upper focal point Fu on the rear side in the projection direction is set on the lens axis La on the front side in the projection direction with respect to the lower focal point Fd. The projection lens 17 continuously increases the focal length from the lower focal length Fd on the lower lens portion 41 side to the upper focal length Fu on the upper lens portion 42 side at the position where the lower lens portion 41 and the upper lens portion 42 are connected. It is changing (so-called gradual change).

Next, the lighting of the vehicle lamp 10 will be described. The vehicle lighting fixture 10 is provided in the lighting chamber, and an external connector is connected to the substrate 18 via a connector connecting portion. The vehicle lighting fixture 10 supplies electric power to each of the first light sources 11 and each of the second light sources 12 mounted on the substrate 18 from the lighting control circuit via the external connector and the connector connection portion, thereby causing the first light sources 11 and each of the second light sources 12. Each second light source 12 is turned on and off as appropriate.

As shown in FIG. 2, in the vehicle lighting tool 10, when each of the first light sources 11 is turned on, the light L1 from each of the first light sources 11 is emitted from each of the first light guide incident surfaces 22 of the first light guide lens 14. The light L1 that has passed through the curved incident surface 22a is regarded as parallel light, and the light L1 that has passed through the annular incident surface 22b is reflected by the reflecting surface 22c and emitted from the first light guide emitting surface 23. The light L1 travels to the vicinity of the lower focal point Fd of the lower lens portion 41 of the projection lens 17 set in the vicinity of the tip edge 16a of the shade 16 on the lens axis La. When the light L1 is projected by the projection lens 17, as shown in FIG. 5, the light L1 is divided into seven parts arranged in the horizontal direction below the vicinity of the position (horizontal line) of the lens axis La on the projection surface. It forms an optical region lp. The seven partial distribution light regions lp are integrally formed side by side in the width direction while partially overlapping each other to form a passing light distribution pattern LP. In the passing light distribution pattern LP, a part of each light L1 is blocked by the tip edge 16a and advances to the projection lens 17 while being shaped along the tip edge 16a, and is projected by the projection lens 17. Then, a cut-off line CL is formed on the upper edge.

Further, as shown in FIG. 2, in the vehicle lighting tool 10, when each of the second light sources 12 is turned on, the light L2 from each of the second light sources 12 is emitted from the second light guide incident surface 34 to the second light guide lens. It is incident on each of the second light source light sources 31 of 15, guided by each second lens light source 31, and is emitted from the second light source exit surface 35. The light L2 travels to the vicinity of the upper focal point Fu of the upper lens portion 42 of the projection lens 17 set on the front side of the tip edge 16a in the front-rear direction on the lens axis La. When the light L2 is projected by the projection lens 17, as shown in FIG. 6, 12 parts are distributed in the horizontal direction above the vicinity of the position (horizontal line) of the lens axis La on the projection surface. The optical region hp is formed. The twelve partially distributed light regions hp are integrally formed side by side in the width direction while partially overlapping each other to form a traveling light distribution pattern HP.

The vehicle lighting fixture 10 of the first embodiment is an ADB (Adaptive Driving Beam (variable light distribution type headlight)), and by turning on and off each second light source 12 individually, 12 partial distribution light regions are used. The part distribution light region hp in a specific direction of the hp can be turned on and off. As a result, the vehicle lamp 10 enables partial light distribution control in any direction in the traveling light distribution pattern HP.

According to the above description, the vehicle lamp 10 can form a passing light distribution pattern LP having a cut-off line CL as shown in FIG. 5 by turning on each of the first light sources 11, and the light distribution at the time of passing (light distribution at the time of passing). It can be a so-called low beam). Further, as shown in FIG. 7, the vehicle lighting tool 10 is superposed on the passing light distribution pattern LP by turning on each of the second light sources 12 in addition to the first light source 11, and the traveling light distribution pattern. The HP can be formed, and the light distribution during traveling (so-called high beam) can be obtained. Then, as described above, the vehicle lamp 10 can individually control the arbitrary part distribution light region hp in the traveling light distribution pattern HP by turning on and off each of the second light sources 12 individually. , ADB functions can also be realized.

Next, the operation of the vehicle lamp 10 will be described. Conventionally, in a vehicle lamp, a light distribution pattern for passing is formed by light from each first light source, and a light distribution pattern for traveling is formed by light from each second light source. In the vehicle lighting equipment, the light from each first light source is propagated from the upper side in the vertical direction with respect to the lens axis to the lower focal point of the lower lens portion, and then projected by the projection lens to form a light distribution pattern for passing. To form. Further, in the vehicle lamp, the light from each second light source is projected from the lower side in the vertical direction with respect to the lens axis to the upper focal point of the upper lens portion and then projected by the projection lens to distribute the light for traveling. Form a pattern. Therefore, in the vehicle lamp, the first light source and the second light source are arranged so that the light emitted from each other intersects with each other. For this reason, it is difficult to provide each first light source and each second light source on the same substrate in the vehicle lamp.

On the other hand, in the vehicle lamp 10, the first light source 11 and the second light source 12 are mounted on the same substrate 18, and the emission optical axes Li are parallel to each other and have a dip angle in the front-rear direction. It is set to 30 to 50 degrees. Therefore, the vehicle lamp 10 can direct the emission light axis Li of each first light source 11 toward the lower focal point Fd of the lower lens portion 41, and each first light source 11 is provided by the first light guide lens 14. It is possible to easily guide the light L1 from the light source to the lower focal point Fd. As a result, the vehicle lamp 10 can guide the light L1 from each first light source 11 to the lower focal point Fd with a simple configuration, so that the light L1 can be efficiently guided to the lower focal point Fd. .. Further, in the vehicle lamp 10, the direction in which the emission light axis Li of each second light source 12 faces the upper focal point Fu of the upper lens portion 42 is significantly different, but the second light source 12 is moved forward and backward more than each first light source 11. By arranging it on the rear side in the direction, the distance from each second light source 12 to the upper focal point Fu can be increased. Therefore, the vehicle lamp 10 can secure the degree of freedom of the light guide in the second light guide lens 15, and the second light guide lens 15 changes the direction in which the light L2 from each of the second light sources 12 travels. , The light L2 can be efficiently guided to the upper focal point Fu. As a result, the vehicle lighting fixture 10 provides the first light source 11 and the second light source 12 on the same substrate 18, and efficiently utilizes the light L1 and the light L2 from them to provide a light distribution pattern LP for passing each other. A traveling light distribution pattern HP can be formed.

Further, the vehicle lamp 10 has a configuration in which a part of the light L1 from each first light source 11 passing through the first light guide lens 14 is blocked by the tip edge 16a, and the upper surface of the shade 16 is a reflecting surface 16b. .. Therefore, the vehicle lamp 10 can reflect the light L1 from each of the first light sources 11 blocked in the vicinity of the tip edge 16a by the reflecting surface 16b and proceed to the projection lens 17, and each of the first light sources. It is possible to increase the utilization efficiency of the light L1 from 11. In addition, the vehicle lamp 10 is provided with a shade 16 as a dip angle that is 1/2 of the angle formed by the emission light axis Li of each first light source 11 in the front-rear direction. Therefore, the vehicle lamp 10 can make the traveling direction of the light L1 reflected by the reflecting surface 16b close to parallel to the front-rear direction (a state in which the inclination with respect to the front-rear direction is small), and in that state, the lens axis of the projection lens 17 It can be advanced to the vicinity of La. As a result, the vehicle lamp 10 can advance the light L1 reflected by the reflecting surface 16b to the vicinity of the center where the vertical line and the horizontal line intersect in the passing light distribution pattern LP, and the traveling light distribution pattern HP. It is possible to improve the utilization efficiency of the light L1 from each of the first light sources 11 while forming the light L1 more appropriately.

Further, the vehicle lamp 10 is provided so that the distance between the seven first light sources 11 in the width direction increases toward the outside. Therefore, the vehicle lamp 10 can form the light distribution region lp over a wide range on the projection surface so as to be along the horizon while making the vicinity of the center where the vertical line and the horizon intersect the brightest. As a result, the vehicle lighting fixture 10 can be sufficiently expanded in the horizontal direction and the distributed light regions lp of each part are arranged without gaps to form a light distribution pattern LP for passing each other. Here, since the passing light distribution pattern LP is required to brighten the vicinity of the lens shaft La most, the vehicle lamp 10 can appropriately form the passing light distribution pattern LP with a simple configuration. In addition, the vehicle lamp 10 sets the inclination angle of the first light guide emitting surface 23 with respect to the orthogonal surface Op as the distance from the lens axis La in the width direction increases in each first lens light guide portion 21 of the first light guide lens 14. It's getting bigger. Therefore, the vehicle lamp 10 can collect each light L1 at a lined position on the focal plane (image plane) including the lower focal Fd of the lower lens portion 41 in the vicinity of the tip edge 16a of the shade 16 and pass each other. The light distribution pattern LP can be appropriately formed.

In the vehicle lamp 10, the lower focal length Fd of the lower lens portion 41 is a long focal length Df and the upper focal length Fu of the upper lens portion 42 is a short focal length Df on the lens axis La. Then, the vehicle lamp 10 sets the lower focal point Fd of the lower lens portion 41 in the vicinity of the tip edge 16a of the shade 16. Therefore, in the vehicle lamp 10, the light L1 emitted from each of the first light sources 11 and guided by the first light guide lens 14 is directed by the shade 16 on the lower focal plane (image plane) including the lower focal Fd. It can be incident on the projection lens 17 by passing above the tip edge 16a. Therefore, in the vehicle lamp 10, the light L1 from each of the first light sources 11 can be guided below the cut-off line CL on the projection surface, and the light distribution pattern LP for passing can be appropriately formed.

Further, in the vehicle lamp 10, the upper focal point Fu of the upper lens portion 42 is on the projection lens 17 side of the lower focal point Fd set in the vicinity of the tip edge 16a of the shade 16 on the lens axis La. Therefore, in the vehicle lighting equipment 10, since the light L2 from each of the second light sources 12 is not blocked by the shade 16 in the vicinity of the upper focal Fu, the upper focal Fu on the focal plane (image plane) including the upper focal Fu In addition to the lower side, the light L2 from each second light source 12 can be advanced to the projection lens 17 through the upper side of the upper focal point Fu on the same focal plane. As a result, in the vehicle lighting fixture 10, as shown in FIGS. 6 and 7, a part of the light L2 from each of the second light sources 12 is blocked by the tip edge 16a of the shade 16, and the traveling light distribution pattern HP The lower edge can be shaped along the tip edge 16a, and the lower edge can be positioned below the cut-off line CL on the projection surface. Therefore, the vehicle lamp 10 can form the passing light distribution pattern LP formed by the light L2 from each of the second light sources 12 below the cut-off line CL on the projection surface, and can be combined with the traveling light distribution pattern HP. It is possible to suppress the occurrence of dark areas between the two. As a result, the vehicle lamp 10 can appropriately form the light distribution pattern LP for passing and the light distribution pattern HP for traveling while giving the projection lens 17 a good appearance without steps.

The vehicle lamp 10 of the first embodiment can obtain the following effects.

In the vehicle lamp 10, the first light source 11 and the second light source 12 are tilted as a dip angle with respect to the front-rear direction while the emission light axes Li are parallel to each other, and are projected more than the first light source 11 in the front-rear direction. A second light source 12 is provided at a position away from the lens 17. Therefore, in the vehicle lamp 10, the first light source 11 and the second light source 12 are provided on the same substrate 18, and the light L1 and the light L2 from them are used to appropriately pass the light distribution pattern LP for passing and the light distribution pattern for traveling. HP can be formed.

The vehicle lamp 10 has an emission optical axis Li of the first light source 11 and the second light source 12 at a dip angle of 30 to 50 degrees with respect to the front-rear direction. Therefore, in the vehicle lamp 10, it is easy to appropriately form both light distribution patterns (LP, HP) by the lights L1 and L2 from both light sources (11, 12) provided on the same substrate 18. Can be done. That is, the vehicle lamp 10 has the light L1 and L2 guided by the light L1 and L2, respectively, while making the first light guide lens 14 and the second light guide lens 15 easy to configure by setting the emission light axis Li to the above angle range. Can be appropriately guided to the projection lens 17.

Further, in the vehicle lighting fixture 10, in the plurality of first lens light guide portions 21, the inclination angle of the first light guide emission surface 23 with respect to the orthogonal plane Op orthogonal to the front-rear direction increases as the distance from the lens axis La increases. Therefore, the vehicle lamp 10 appropriately collects the light L1 from each of the first light sources 11 in the vicinity of the tip edge 16a of the shade 16 even if the distance between the first light sources 11 in the width direction is set as described above. It is possible to appropriately form a light distribution pattern LP for passing each other.

Further, the vehicle lamp 10 is provided with a shade 16 forming a cut-off line CL of the passing light distribution pattern LP between the first light source 11 and the second light source 12, and the shade 16 is set with respect to the front-rear direction. The dip angle is halved of the angle formed by the emission light axis Li. Therefore, the vehicle lamp 10 can prevent the light L1 from the first light source 11 reflected by the reflecting surface 16b from being projected to an unexpected position in the region forming the traveling light distribution pattern HP.

The vehicle lamp 10 is configured such that a plurality of first light sources 11 are arranged in the horizontal direction, and the distance between adjacent first light sources 11 increases as the distance from the lens axis La increases. Therefore, the vehicle lighting fixture 10 can sufficiently widen the vicinity of the lens axis La in the horizontal direction and arrange the distributed light regions lp of each part without gaps, and can appropriately form the light distribution pattern LP for passing each other. ..

In the vehicle lamp 10, the projection lens 17 sets the upper focal length Fu of the upper lens portion 42 to be shorter than the lower focal length Fd of the lower lens portion 41 on the lens axis La. Therefore, the vehicle lighting fixture 10 can be appropriately formed so that the upper end portion of the passing light distribution pattern LP and the lower end portion of the traveling light distribution pattern HP overlap each other.

Therefore, in the vehicle lighting equipment 10 of the first embodiment as the vehicle lighting equipment according to the present disclosure, the first light source 11 and the second light source 12 are provided on the same substrate 18, and the light L1 and the light L2 from them are appropriately used. A light distribution pattern LP for passing and a light distribution pattern HP for traveling can be formed.

Although the vehicle lamps of the present disclosure have been described based on the first embodiment, the specific configuration is not limited to the first embodiment and deviates from the gist of the invention according to each claim of the claims. Unless otherwise, design changes and additions are allowed.

In the first embodiment, it is assumed that the function of the ADB can be realized by individually controlling the turning on and off of each part distributed light region hp in the traveling light distribution pattern HP. However, in the vehicle lamp 10, the first light source 11 that forms the passing light distribution pattern LP and the second light source 12 that forms the traveling light distribution pattern HP are provided on the same substrate 18, and the respective emitted lights are provided. It is not limited to the configuration of the first embodiment as long as the axes Li are parallel to each other and each emitted light axis Li has a dip angle of 30 to 50 degrees with respect to the front-rear direction.

Further, in the first embodiment, seven first lens light guides 21 and seven first light sources 11 are provided. However, the number of the first lens light guide unit 21 and the first light source 11 may be appropriately set according to the number of the unit-distributed light regions lp to be formed and the size and shape of the light distribution pattern LP for passing by them. It is not limited to the configuration of Example 1.

Further, in the first embodiment, the emission optical axes Li of the first light source 11 and the second light source 12 are set to 30 to 50 degrees in dip angle with respect to the front-rear direction. However, the first light source 11 and the second light source 12 are tilted as a dip angle with respect to the front-rear direction while the emission optical axes Li are parallel to each other, and the position is farther from the projection lens 17 than the first light source 11 in the front-rear direction. If the second light source 12 is provided in the above, the angle of the emitted optical axis Li with respect to the front-rear direction may be appropriately set, and is not limited to the configuration of the first embodiment.

Here, in the conventional vehicle lighting equipment of Patent Document 1, since each part-distributed light region is individually turned on and off, each part-distributed light region is not greatly expanded to the adjacent part-distributed light region and is not blurred. In addition, it is desired to clearly form the light region distributed to each part. For this reason, the vehicle lighting equipment described above is provided with a second light guide lens individually corresponding to each second light source, and a projection lens while condensing the light from each second light source with the corresponding second light source lens. By leading to, the light region distributed to each part is clarified. However, in the conventional vehicle lighting equipment, since each second light source emits light from a light emitting surface having a predetermined area, it is difficult to properly collect the light with the second light guide lens, and each part distributed light region is covered. There is room for improvement in terms of clarification.
The second embodiment is disclosed in view of the above circumstances, and discloses a vehicle lighting fixture capable of clearly forming a distributed light region for each part of a traveling light distribution pattern.

Hereinafter, a second embodiment of the vehicle lamp 10 as an embodiment of the vehicle lamp according to the present disclosure will be described with reference to FIGS. 1, 3, 5, 5 to 7, and 8 to 11. Note that in FIGS. 8, 10 and 11, the hatch showing the cross section of the second lens light guide unit 141 and the projection lens 17 is omitted in order to avoid complication.

As shown in FIGS. 1 and 8, the vehicle lamp 10 includes a plurality of first light sources 11, a plurality of second light sources 12, a heat sink member 13, a first light guide lens 14, a second light guide lens 15, and a shade 16. And a projection lens 17 are provided to form a headlight unit. In the vehicle lamp 10, the front-rear direction is defined by the lens axis La of the projection lens 17. The lens axis La is an axis that is the optical center of the projection lens 17.

The plurality of first light sources 11 are aligned in the width direction, and in Example 2, seven (see FIG. 3) are aligned. Each first light source 11 is composed of a light emitting element such as an LED (Light Emitting Diode), and each is mounted on a substrate 18. The substrate 18 has a flat plate shape and is fixed to the front surface 13a of the heat sink member 13. Each of the first light sources 11 is appropriately lit by being supplied with electric power from the lighting control circuit. The seven first light sources 11 are arranged in the width direction, with one in the middle provided on the lens axis La in a plane orthogonal to the vertical direction, and the distance is increased toward the outside in the width direction. (See Fig. 3). Note that this interval may be set as appropriate, and is not limited to the configuration of the second embodiment.

The plurality of second light sources 12 are aligned in the width direction, and in Example 2, 12 (see FIG. 9) are aligned. Each second light source 12 is composed of a light emitting element such as an LED, and is on the same substrate 18 as each first light source 11 on the lower side in the vertical direction and the rear side in the front-rear direction than each first light source 11. It is mounted on the same plane. Therefore, the substrate 18 and the front surface 13a have a normal direction as a dip angle with respect to the front-rear direction on a surface including the front-rear direction and the up-down direction. Each of the second light sources 12 is appropriately turned on all at once or individually by being supplied with electric power from the lighting control circuit. The number of the second light sources 12 may be appropriately set, and is not limited to the configuration of the second embodiment.

Each of the first light source 11 and each second light source 12 emits light from a plane light emitting unit, and the emission optical axis Li is set in a direction orthogonal to the mounted substrate 18. In the following, what is emitted by each of the first light sources 11 is referred to as light L1, and what is emitted by each of the second light sources 12 is referred to as light L2. The first light source 11 and the second light source 12 are mounted on the same substrate 18, so that their respective emission optical axes Li are parallel. Each emission optical axis Li has a dip angle in the range of 30 to 50 degrees with respect to the front-rear direction. In the second embodiment, each of the emitted optical axes Li is set by determining an angle with respect to the front-rear direction on the substrate 18.

The first light guide lens 14 guides the light L1 emitted from each of the first light sources 11 mounted on the substrate 18 to the projection lens 17. The first light guide lens 14 is made of a transparent resin, and as shown in FIG. 3, seven first lens light guide portions arranged in the width direction individually corresponding to each first light source 11. Has 21. Each first lens light guide unit 21 has a first light guide incident surface 22 facing the corresponding first light source 11, and a first light guide exit surface 23 directed toward the projection lens 17. They are connected to each other by the connecting portion 24. Each first lens light guide unit 21 causes light L1 from each first light source 11 incident from the first light guide incident surface 22 and emitted from each first light guide emission surface 23 to be emitted from the tip edge 16a of the shade 16. It is optically designed to focus in the vicinity.

The second light guide lens 15 guides the light L2 emitted from the second light source 12 mounted on the substrate 18 to the projection lens 17. As shown in FIG. 9, the second light guide lens 15 has twelve second lens light guide portions 141 individually corresponding to each second light source 12 and arranged in the width direction. The configuration of each of the second lens light guide portions 141 will be described later.

As shown in FIGS. 1 and 8, the shade 16 is provided on the second light guide lens 15 and has a plate shape extending in the width direction. Therefore, the shade 16 is provided between the optical path from each of the first light sources 11 to pass through the first light guide lens 14 and the optical path from each of the second light sources 12 to pass through the second light guide lens 15. The shade 16 has a shape in which the front end edge 16a in the front-rear direction is joined by two horizontal edges having different positions in the vertical direction at an inclined edge. The shade 16 is for passing by by blocking a part of the light L1 emitted from each of the first light sources 11 and guided by the first light guide lens 14 (each of the first lens light guide portions 21) by the tip edge 16a. A cut-off line CL (see FIG. 5) is formed by connecting two horizontal cut-off lines with an inclined cut-off line on the upper edge of the light distribution pattern LP. The size of the shade 16 may be appropriately set as long as it forms a cut-off line CL at the tip edge 16a, and is not limited to the configuration of the second embodiment.

The projection lens 17 is a convex lens, and in the second embodiment, the exit surface 17a is a convex surface and the incident surface 17b is a flat surface. As long as the projection lens 17 is a convex lens as a whole, the exit surface 17a may be a flat surface or a concave surface, and the incident surface 17b may be a convex surface or a concave surface, and is not limited to the configuration of the second embodiment. The projection lens 17 is supported by the lens holder. The lens holder is in a state where the projection lens 17 is positioned with respect to each of the first light source 11, each second light source 12, the first light guide lens 14, the second light guide lens 15, and the shade 16 mounted on the substrate 18. , Assembled to the heat sink member 13.

As shown in FIG. 8, the projection lens 17 has the rear focal point Fb set in the vicinity of the tip edge 16a of the shade 16. The projection lens 17 projects the light L1 emitted from the first light source 11 and guided by the first light guide lens 14 toward the front of the vehicle to obtain the passing light distribution pattern LP (at least a part) of FIG. Form. Further, the projection lens 17 forms the traveling light distribution pattern HP of FIG. 6 by projecting the light L2 emitted from each of the second light sources 12 and guided by the second light guide lens 15 toward the front of the vehicle. ..

Next, the configuration of the second light guide lens 15 will be described with reference to FIGS. 9 to 11. The second light guide lens 15 is made of a transparent resin, and as shown in FIG. 9, twelve second lens light guide portions arranged in the width direction individually corresponding to each second light source 12. It has 141. Each of the second lens light guide portions 141 has 12 long rod-shaped portions 142 whose second light source 12 side, that is, the substrate 18 side extends toward the projection lens 17 side, and each rod-shaped portion 142 is in the width direction. They are arranged in parallel at intervals. Further, each of the second lens light guide portions 141 has a plate shape in which each rod-shaped portion 142 is integrated with a plate-shaped portion 43 on the projection lens 17 side and expands in the width direction.

Each of the second lens light guide portions 141 has a portion of each rod-shaped portion 142 facing the second light source 12 as a second light guide incident surface 44, and a portion of the plate-shaped portion 43 facing the projection lens 17 side. 2 The light guide emitting surface 45 is used. Therefore, the second light guide incident surface 44 is formed into twelve surfaces individually facing the twelve second light sources 12, and the second light guide exit surface 45 is formed by the twelve second lens light guide portions 141. Is a single surface connected in the width direction. The width direction of each rod-shaped portion 142 is widened from the second light guide incident surface 44 toward the second light guide exit surface 45. The rate of expansion of each rod-shaped portion 142 in the width direction is increased from the inside to the outside in the width direction. That is, in each rod-shaped portion 142, the two central portions in the width direction extend toward the projection lens 17 side with substantially the same dimensions as the second light guide incident surface 44, and the provided positions are toward the outside in the width direction. , The way of spreading with respect to the second light guide incident surface 44 becomes large. Each of the second lens light guide portions 141 has the same optical design as each other. Therefore, in the following, the optical design of the second lens light guide unit 141 will be described with reference to FIG. 10 showing a cross section similar to that of FIG. 8 and FIG. 11 which is a partially enlarged view thereof. FIG. 10 shows a cross section of the second lens light guide unit 141, which is the sixth from the right in FIG.

As shown in FIG. 10, the second lens light guide unit 141 has, in addition to the second light guide incident surface 44 and the second light guide exit surface 45, the incident side light guide reflection surface 46 and the exit side light guide reflection surface. 47 is provided. Here, the second lens light guide unit 141 directs the light L2 from the second light source 12, whose emission optical axis Li is inclined toward the front side in the front-rear direction and downward in the up-down direction, to the rear side of the projection lens 17. Direct to the vicinity of the focal point Fb. Therefore, the second light guide incident surface 44 faces the second light source 12 and is orthogonal to the emission light axis Li of the second light source 12 as a whole, and is in the vertical direction toward the rear side in the front-rear direction. It is tilted downward, that is, parallel to the substrate 18. Further, since the upper end 45a of the second light guide emission surface 45 is located near the second focal point F2 of the incident side light guide reflection surface 46 described later, the second light guide emission surface 45 is in the vertical direction toward the front side in the front-rear direction. It is said to be inclined downward (see FIG. 8). As a result, the second lens light guide unit 141 intersects the direction in which the light L2 from the second light source 12 is incident from the second light guide incident surface 44 and the direction in which the light L2 is emitted from the second light guide exit surface 45. Has been done.

Therefore, the incident side light guide reflecting surface 46 is provided on the lower surface (lower surface) in the vertical direction in the vicinity of the second light guide incident surface 44 (mainly the rod-shaped portion 142) in the second lens light guide unit 141. The light L2 incident from the second light guide incident surface 44 is reflected on the second light guide exit surface 45 side, that is, on the front side in the front-rear direction and on the upper side. Further, the light emitting side light reflecting surface 47 is provided on the upper side in the vertical direction in the vicinity of the second light guide emitting surface 45 (mainly the plate-shaped portion 43) in the second lens light guide unit 141, and is provided on the incident side. The light L2 reflected by the light guide reflecting surface 46 is reflected to the front side in the front-rear direction. The light guide reflection surface 46 on the incident side and the light guide reflection surface 47 on the exit side may be those that utilize total reflection, those that are subjected to reflection processing, or other configurations as long as they reflect as described above. The second lens light guide unit 141 is optically set as follows in order to efficiently guide the light L2 from the corresponding second light source 12.

As shown in FIG. 11, the second light guide incident surface 44 advances the light L2 from the second light source 12 to the region provided with the incident side light guide reflection surface 46 on the lower surface of the second lens light guide unit 141. In other words, it is refracted toward the second light guide incident surface 44 side on the lower surface of the second lens light guide unit 141. The second light guide incident surface 44 has at least a second light source 12 side, that is, a curved incident surface 44a that is convexly curved upward in the vertical direction in order to guide the light L2 in this way. The curved incident surface 44a has a center of curvature Cc on the emission light axis Li of the second light source 12, and optically positions the position of the first focal point F1 of the incident side light guide reflecting surface 46 with the second light source 12. It is a curved surface that is displaced at the position (the center of light emission). The curved incident surface 44a may be a free curved surface based on such a curved surface, or may be a curved surface whose curvature is gradually changed. That is, in the second lens light guide unit 141, the light L2 from the second light source 12 travels in a state of being refracted by the second light guide incident surface 44, but the traveling direction is emitted from the first focal point F1. This is consistent with the mode of travel of the virtual light Lv that has not been refracted by the second light guide incident surface 44.

The curved incident surface 44a may be set to an arbitrary size from the upper end 44c of the second light guide incident surface 44 in the vertical direction, and in the second embodiment, the second light source 12 is set from the upper end 44c of the second light guide incident surface 44. It is set up to the position where it intersects the emission optical axis Li. The second light guide incident surface 44 of the second embodiment is provided with a continuous flat incident surface 44b of the curved incident surface 44a at a location other than the curved incident surface 44a. The flat incident surface 44b is a flat surface orthogonal to the emitted light axis Li, and causes the light L2 from the second light source 12 to travel to the incident side light guide reflecting surface 46.

As shown in FIG. 10, the incident-side light guide reflecting surface 46 has a position on the emission optical axis Li of the second light source 12 behind the second light source 12 in the front-rear direction as the first focal point F1 and is projected. The vicinity of the rear focal point Fb of the lens 17 is a free curved surface based on an ellipse having the second focal point F2. The second focal point F2 is set in the vicinity of the upper end 45a of the second light guide emitting surface 45. Here, the second light guide incident surface 44 has a curved incident surface 44a that optically displaces the position of the first focal point F1 of the incident side light guide reflection surface 46 to the position of the second light source 12 as described above. Therefore, the incident side light guide reflecting surface 46 substantially has the second light source 12 as the first focal point F1 in consideration of the optical characteristics of the curved incident surface 44a. Further, the incident side light guide reflecting surface 46 is optically set so as to focus the light L2 from the second light source 12 passing through the flat incident surface 44b in the vicinity of the second focal point F2. Therefore, the incident side light guide reflecting surface 46 reflects the light L2 emitted from the second light source 12 and passing through the curved incident surface 44a or the flat incident surface 44b toward the second focal point F2. As a result, the light guide reflecting surface 46 on the incident side has a second focal point F2 at which the reflected light is collected as an optical design.

Here, the incident side light guide reflecting surface 46 is optically set so as to reflect the light L2 from the center position of the light emitting surface of the second light source 12 toward the second focal point F2 as a point light source. On the other hand, the light emitting surface of the second light source 12 has a predetermined area. Therefore, it is difficult for the incident side light guide reflecting surface 46 to collect all of the light L2 passing through the second light source 12 to the second light guide incident surface 44 at the second focal point F2. Therefore, the second lens light guide unit 141 is provided with a light guide reflection surface 47 on the exit side.

The light emitting side light reflecting surface 47 reflects the light L2 emitted from the second light source 12 through the second light guide incident surface 44 and reflected by the incident side light guide reflecting surface 46 toward the front side in the front-rear direction. Then, it advances to the second light guide emission surface 45. The light emitting side light reflecting surface 47 is a surface extending from the upper end 45a of the second light guide emitting surface 45 to the rear side (second light source 12 side) in the front-rear direction, and is the incident side light guide reflecting surface 46. It is curved convexly on the opposite side, that is, on the upper side in the vertical direction. The light emitting side light reflecting surface 47 of the second embodiment has a curved surface having a radius of curvature of 100 mm to 1000 mm.

Further, in the light guide reflecting surface 47 on the exit side, the tangent line Lt at the tip portion 47a on the upper end 45a side has the following positional relationship. Here, the intersection of the emission light axis Li of the second light source 12 and the light guide reflection surface 46 on the incident side is set as an intersection Ip, and the intersection Ip and the second focal point F2 (the light guide reflection surface 46 on the incident side is an optical design). The straight line connecting the point to be focused on) is defined as the leading ray Lg. The leading ray Lg is in a direction in which the light L2 from the second light source 12 using the first focal point F1 as a virtual light source is reflected by the incident side light guide reflecting surface 46 and travels to the second focal point F2. Since the light L2 on the leading ray Lg travels on the light axis Li emitted from the second light source 12, the amount of light is high. The tangent line Lt has an angle θ of 5 to 10 degrees with respect to the leading ray Lg.

Further, the leading light beam Lg is orthogonal to the second light guide emitting surface 45. The second light guide emitting surface 45 of the second embodiment is a flat surface (flat surface) in a vertical cross section orthogonal to the width direction. The second light guide emitting surface 45 may be curved as long as it is orthogonal to the leading light Lg at the intersection with the leading light Lg, and is not limited to the configuration of the second embodiment.

The second light guide exit surface 45 emits the light L2 reflected by the incident side light guide reflection surface 46 and the exit side light guide reflection surface 47 toward the projection lens 17. Since the second light guide emitting surface 45 is a flat surface orthogonal to the leading light ray Lg in the vertical cross section, the light L2 passing on the leading light ray Lg is emitted without being refracted, and the other light L2 is at an angle. It is refracted according to the above and emitted. Even when the second light guide emitting surface 45 is curved as described above, since it is orthogonal to the leading light Lg at the intersection with the leading light Lg, the second light guide emitting surface 45 is on the leading light Lg. The passing light L2 is emitted without being refracted, and the other light L2 is refracted and emitted according to the angle.

By fixing the second light guide lens 15 to the lens holder or the like, the above positional relationship of each second lens light guide unit 141 with respect to each second light source 12 and projection lens 17 is set. Since the second light guide lens 15 does not allow light L2 to enter and exit at locations other than the second light guide incident surface 44 and the second light guide exit surface 45, aluminum, silver, or the like is formed by vapor deposition, painting, or the like at the locations other than these. The light L2 may be reflected by adhering the reflective member of the above, or the light transmission may be prevented by adhering the light-shielding member.

As shown in FIG. 8, in the vehicle lighting tool 10, when each of the first light sources 11 is turned on, the light L1 from each of the first light sources 11 is emitted from each of the first lens light guide portions 21 of the first light guide lens 14. It is incident on the first light source incident surface 22 of the above, is guided by each first lens light source unit 21, and is emitted from the first light source emission surface 23. The light L1 is projected by the projection lens 17, and as shown in FIG. 5, seven partially distributed light regions arranged in the horizontal direction below the vicinity of the position (horizontal line) of the lens axis La on the projection surface. Form lp. The seven partial distribution light regions lp are integrally formed side by side in the width direction while partially overlapping each other to form a passing light distribution pattern LP. In the passing light distribution pattern LP, a part of each light L1 is blocked by the tip edge 16a and projected by the projection lens 17 while being shaped along the tip edge 16a, so that a cut-off line CL is formed on the upper edge. It is formed.

Further, in the vehicle lamp 10, when each of the second light sources 12 is turned on, the light L2 from each of the second light sources 12 guides the light L2 from the second light guide incident surface 44 to each second lens guide of the second light guide lens 15. It is incident on the light unit 141. In each of the second lens light guide units 141, the incident side light guide reflecting surface 46 reflects the light L2 incident on the second light guide incident surface 44 toward the second focal point F2. A part of the light L2 reflected by the incident side light guide reflecting surface 46 travels directly to the second light guide emitting surface 45, and the other part is reflected by the emitting side light guide reflecting surface 47 to guide the second light. It proceeds to the light emitting surface 45. The light L2 is emitted from the second light guide emitting surface 45 and travels to the vicinity of the second focal point F2, that is, the rear focal point Fb of the projection lens 17. The light L2 travels to the projection lens 17 and is projected by the projection lens 17, and as shown in FIG. 6, is horizontal on the projection surface above the vicinity of the position (horizontal line) of the lens axis La. Twelve partially distributed optical regions hp arranged in the direction are formed. The twelve partially distributed light regions hp are integrally formed side by side in the width direction while partially overlapping each other to form a traveling light distribution pattern HP. Therefore, the vehicle lighting fixture 10 can form the traveling light distribution pattern HP so that the lower end portion overlaps the upper end portion of the passing light distribution pattern LP with the light L2 from each of the second light sources 12.

The vehicle lighting fixture 10 of the second embodiment is an ADB (Adaptive Driving Beam (variable light distribution type headlight)), and by turning on and off each second light source 12 individually, 12 partial distribution light regions are used. The part distribution light region hp in a specific direction of the hp can be turned on and off. As a result, the vehicle lamp 10 enables partial light distribution control in any direction in the traveling light distribution pattern HP.

Next, the operation of the vehicle lamp 10 will be described. The second light guide lens 15 has a curved incident surface 44a having a curved surface that is convex toward the second light source 12 at least in a part of the second light incident surface 44 of each second lens light guide unit 141. The second light guide incident surface 44 is a second lens light guide unit 141 when the light L2 emitted from the second light source 12 is incident on the second lens light guide unit 141 due to the condensing action of the curved incident surface 44a. It can be refracted toward the second light guide incident surface 44 side on the lower surface of the light guide. Therefore, the second light guide lens 15 can set the direction in which the light L2 from the second light source 12 travels toward the second light guide incident surface 44 side, and directs the light L2 to the second focal point F2 of the incident side light guide reflection surface 46. Can lead to. In particular, in the second light guide lens 15 of the second embodiment, the second light guide incident surface 44 allows the light L2 from the second light source 12 to be transmitted to the incident side light guide reflection surface 46 on the lower surface of the second lens light guide unit 141. It is supposed to proceed to the area where is provided.

As an example of this, in FIG. 10, the light L2 emitted from the second light source 12 is not provided with the light L2a refracted by the curved incident surface 44a of the second light guide incident surface 44 and the curved incident surface 44a. The light L2b refracted by the flat second light guide incident surface 44 (the flat incident surface 44b extended to the curved incident surface 44a side) is shown. The light L2a travels to a region on the lower surface of the second lens light guide portion 141 where the incident side light guide reflecting surface 46 is provided, and is reflected by the incident side light guide reflecting surface 46 toward the second focal point F2. Then, it proceeds to the projection lens 17 through the second light guide emitting surface 45. On the other hand, the light L2b travels to the front side in the front-rear direction from the region on the lower surface of the second lens light guide unit 141 where the incident side light guide reflection surface 46 is provided. Therefore, the light L2b is reflected at a location that is not set as the incident side light guide reflection surface 46, so that the light L2b travels to a position further downward from the second focal point F2, and the second light guide is transmitted from that position. It proceeds to the projection lens 17 through the exit surface 45. Therefore, the second light guide lens 15 appropriately guides the light L2 from the second light source 12 to the light guide reflection surface 46 on the incident side by providing the curved light incident surface 44a on the second light guide incident surface 44. Can be done. As a result, the second light guide lens 15 appropriately projects the light L2 so that the mode in which the light L2 from the second light source 12 actually travels has a desired luminous intensity distribution as the traveling light distribution pattern HP. Can lead to.

Further, in the second light guide lens 15, the incident side light guide reflection surface 46 is set at a position on the emission light axis Li of the second light source 12 behind the second light source 12 in the front-rear direction as the first focal point F1. At the same time, the vicinity of the rear focal point Fb of the projection lens 17 is a free curved surface based on an ellipse having the second focal point F2. Further, the second light guide lens 15 of the second embodiment optically displaces the position of the first focal point F1 of the light guide reflecting surface 46 on the incident side to the position of the corresponding second light source 12 (the center of light emission thereof). It has a curved incident surface 44a to be made to. In addition, the incident side light guide reflecting surface 46 concentrates the light L2 from the second light source 12 passing through the flat incident surface 44b of the second light guide incident surface 44 in the vicinity of the second focal point F2. Is also set optically. Therefore, when the second light guide lens 15 reflects the light L2 from the second light source 12 through the second light guide incident surface 44 on the incident side light guide reflecting surface 46, the second light guide reflecting surface 46 of the incident side light guide reflecting surface 46. It can be advanced to bifocal F2. Therefore, the second light guide lens 15 can concentrate the light on the center (lens axis La) side where the vertical line and the horizontal line intersect on the projection surface, and the distant visibility can be improved.

Further, in the second light guide lens 15, the light guide reflection surface 47 on the exit side has a curved surface that is convex on the side opposite to the light guide reflection surface 46 on the incident side. Therefore, the light emitting side light emitting surface 47 directs the light L2 reflected by the incident side light guide reflecting surface 46 toward the second light guide emitting surface 45 while suppressing the light L2 from spreading in the second lens light guide unit 141. It can be reflected and the light L2 can be appropriately guided to the projection lens 17 as a result. In particular, in the second light guide lens 15 of the second embodiment, the tangent line Lt at the tip portion 47a leads a straight line connecting the intersection Ip of the emission light axis Li and the light guide reflection surface 46 on the incident side and the second focal point F2. The light emitting side light reflecting surface 47 is set so as to form an angle θ of 5 to 10 degrees with respect to Lg. Therefore, the light emitting side light guide reflecting surface 47 can reflect the light L2 reflected by the incident side light guide reflecting surface 46 toward the vicinity of the second focal point F2, that is, the vicinity of the lens axis La. Therefore, the second light guide lens 15 can concentrate the light on the center (lens axis La) side on the projection surface, and the distant visibility can be improved.

As an example of this, in FIG. 10, with respect to the light L2 reflected by the incident side light guide reflection surface 46, the light L2c reflected by the exit side light guide reflection surface 47 and the light exit side light guide reflection surface made flat. The light L2d reflected at 47 (the position of the tangent line Lt) is shown. The light L2c travels in the vicinity of the second focal point F2, whereas the light L2d travels downward from the light L2c. This is because the light emitting side light reflecting surface 47 can be curved as described above so that the angle with respect to the leading light ray Lg can be made smaller than the tangent line Lt, and the leading light ray Lg is the light guide on the incident side from the first focal point F1. This is due to the fact that the light L2 is reflected by the reflecting surface 46 and travels toward the second focal point F2. Therefore, the second light guide lens 15 causes the light L2 from the second light source 12 to move to the vicinity of the second focal point F2, that is, to the vicinity of the lens axis La by curving the light emitting side light guide reflection surface 47 as described above. It can be directed and reflected, and can be appropriately guided to the projection lens 17.

The second light guide lens 15 has the second light guide emission surface 45 as a flat surface in the vertical cross section and is orthogonal to the leading light beam Lg. Therefore, the second light guide lens 15 does not refract the light L2 having a high amount of light passing on the leading light ray Lg from the second light source 12 on the second light guide emission surface 45, and the second light guide emission surface 45 thereof. Can be emitted from. From this, the second light guide lens 15 can efficiently utilize the light L2 from the second light source 12 to form the light distribution region hp for each part, that is, the light distribution pattern HP for traveling (see FIG. 6).

The second light guide lens 15 is composed of each second lens light guide portion 141 in which the divided rod-shaped portion 142 is integrated with the plate-shaped portion 43. Therefore, each second lens light guide unit 141 guides the light L2 from the second light source 12 to the projection lens 17 while suppressing the spread of the light L2 from the individually corresponding second light source 12. Can be done. As a result, the second light guide lens 15 can collect and brighten the light while suppressing the expansion of the distributed light region hp of each part. In particular, the second light guide lens 15 of the second embodiment increases the proportion of the rod-shaped portions 142 that expand in the width direction from the inside to the outside in the width direction. Therefore, the second light guide lens 15 has the smallest width dimension of the two central divided light regions hp to collect light and increase the luminous intensity, and the width is increased so that the position of the divided light region hp is on the outside. Increase the size to disperse the light and reduce the luminosity. Here, in the traveling light distribution pattern HP, the luminous intensity near the center (lens axis La) where the vertical line and the horizontal line intersect is the highest (so-called hot zone), and the luminous intensity on the outer side in the width direction is low. Is required. As a result, the second light guide lens 15 can form the traveling light distribution pattern HP with an appropriate luminous intensity distribution by setting the width dimension of each rod-shaped portion 142 as described above.

The vehicle lamp 10 of the second embodiment can obtain the following effects.

In the vehicle lamp 10, each second lens light guide portion 141 has a second light guide incident surface 44 facing the second light source 12, and at least a part of the second light guide incident surface 44 is the second light source 12. It is a curved surface that is convex to the side. Therefore, when the light L2 emitted from the second light source 12 is incident on the second lens light guide unit 141, the vehicle lamp 10 is in the front side (projection lens 17 side) in the front-rear direction in the second lens light guide unit 141. ) Can be suppressed, and the light L2 can be appropriately guided to the projection lens 17. As a result, the vehicle lamp 10 projects the light L2 from each of the second light sources 12 guided by each of the second light guide lenses 15 with the projection lens 17, so that the distributed light region hp of each part is blurred and optically. It is possible to suppress the brightness from protruding from the area designed in. Therefore, the vehicle lamp 10 can be clearly formed by suppressing blurring and spreading of each part distribution light region hp.

Further, in the vehicle lighting tool 10, the incident side light guide reflecting surface 46 in which the second lens light guide unit 141 includes the intersection Ip that intersects the emission light axis Li of the second light source 12 and reflects the light L2 from the second light source 12. And a second light source emitting surface 45 that emits the light L2 reflected by the incident side light source reflecting surface 46. Then, in the vehicle lamp 10, the incident side light guide reflecting surface 46 is a curved surface that focuses the light L2 from the second light source 12 in the vicinity of the rear focal point Fb of the projection lens 17 by reflection. Therefore, in the vehicle lamp 10, each second lens light guide unit 141 can guide the light L2 emitted from the second light source 12 to the vicinity of the second focal point F2, and each unit is projected by the projection lens 17. The distributed light region hp can be clearly formed.

Further, in the vehicle lamp 10, the incident side light guide reflecting surface 46 is provided on the lower surface in the vertical direction in the vicinity of the second light guide incident surface 44 in the second lens light guide unit 141. Further, in the vehicle lamp 10, the second light guide incident surface 44 receives the light from the second light source 12 on the lower surface of the second lens light guide unit 141 on the side where the second light guide incident surface 44 is provided (second light guide incident surface 44). It is a curved surface that refracts to the side). Therefore, the vehicle lamp 10 can guide the light L2 from the corresponding second light source 12 through the second light guide incident surface 44 to the incident side light guide reflection surface 46 in each second light guide lens 15. , The light L2 can be more appropriately guided to the projection lens 17.

In the vehicle lighting equipment 10, each second lens light guide unit 141 reflects a part of the light L2 reflected by the incident side light guide reflection surface 46 toward the second light guide exit surface 45. It has a surface 47, and the light emitting side light reflecting surface 47 thereof has a curved surface that is convex on the side opposite to the light emitting light reflecting surface 46 on the incident side. Therefore, the light emitting side light guide reflecting surface 47 can reflect the light L2 reflected by the incident side light guide reflecting surface 46 toward the projection lens 17 while suppressing the light L2 from spreading in the second lens light guide unit 141. As a result, the vehicle lamp 10 can appropriately guide the light L2 to the projection lens 17.

The vehicle lighting tool 10 has a tangent line Lt at the tip portion 47a on the second light guide emission surface 45 side on the light emission reflection surface 47 with respect to a leading light ray Lg which is a straight line connecting the intersection Ip and the second focal point F2. The angle θ is 5 to 10 degrees. Therefore, the light emitting side light guide reflecting surface 47 can reflect the light L2 reflected by the incident side light guide reflecting surface 46 toward the vicinity of the second focal point F2. As a result, the vehicle lamp 10 can appropriately guide the light L2 to the projection lens 17.

The vehicle lamp 10 has the second light guide emitting surface 45 orthogonal to the leading light beam Lg connecting the intersection Ip and the second focal point F2. Therefore, the second light guide lens 15 can emit light L2 having a high amount of light passing on the leading light ray Lg from the second light source 12 from the second light guide emission surface 45 without refraction. As a result, the vehicle lamp 10 can appropriately guide the light L2 to the projection lens 17.

Therefore, the vehicle lighting equipment 10 of the second embodiment as the vehicle lighting equipment according to the present disclosure can clearly form the distribution light region hp of each part of the traveling light distribution pattern HP.

Although the vehicle lamps of the present disclosure have been described based on the second embodiment, the specific configuration is not limited to the second embodiment and deviates from the gist of the invention according to each claim of the claims. Unless otherwise, design changes and additions are allowed.

In the second embodiment, the function of the ADB can be realized by individually controlling the turning on and off of the light distribution region hp of each part in the traveling light distribution pattern HP. However, the vehicle lamp 10 projects the light L1 from the first light source 11 with the projection lens 17 to form a light distribution pattern LP for passing each other, and the light L2 from each of the second light sources 12 is directed to the lens light guide unit (the first). The configuration is not limited to the configuration of the second embodiment, as long as it is guided by the two-lens light source unit 141) and projected by the projection lens 17 to form a traveling light distribution pattern HP composed of each portion distributed light region hp.

Further, in the second embodiment, twelve second lens light guide portions 141 of the second light guide lens 15 are provided, and the second lens light guide portions 141 thereof are arranged side by side at intervals in the width direction. It is composed of a long rod-shaped portion 142 and a plate-shaped portion 43 that integrates them. However, if the second light guide lens 15 has a second lens light guide portion 141 corresponding to each second light source 12, the second light guide lens 15 is composed of only the rod-shaped portion 142 without the plate-shaped portion 43, that is, separated. It may be composed of 12 rod-shaped portions (142), and is not limited to the configuration of the second embodiment. In this case, the twelve rod-shaped portions (142) may be arranged at intervals or may be arranged in contact with each other. Further, for example, of the 12 rod-shaped portions (142), 6 rod-shaped portions (142) in an odd order from one side are integrated by a first connecting portion extending in the width direction, and the remaining one side. Six rod-shaped portions (142) in an even-numbered order may be integrated by a second connecting portion extending in the width direction, and the twelve rod-shaped portions (142) may be meshed with each other so as to be arranged in order. .. In this case, since it can be configured as two parts in which six rod-shaped portions (142) are lined up, each rod-shaped portion (142) can be appropriately formed even when injection molding or the like is used, for example. This is because if the 12 rod-shaped portions (142) are integrated, the rod-shaped portions (142) will be lined up at narrow intervals or in contact with each other, which may make it difficult to form by injection molding or the like. by.

Further, in the second embodiment, 12 second lens

light guide portions

141 and 12 second light sources 12 are provided. However, the number of the second lens light guide unit 141 and the second light source 12 may be appropriately set according to the number of the unit-distributed light regions hp to be formed and the size and shape of the traveling light distribution pattern HP by them. It is not limited to the configuration of Example 2.

In the second embodiment, the light emitting side light reflecting surface 47 is a curved surface having a radius of curvature of 100 mm to 1000 mm. However, the light emitting side light reflecting surface 47 is convexly curved to the side opposite to the incident side light guide reflecting surface 46, and the light L2 reflected by the incident side light guide reflecting surface 46 is transferred to the second lens light guide unit. If the light is reflected toward the second light guide emitting surface 45 while being suppressed from spreading within 141, the radius of curvature may be appropriately set, and is not limited to the configuration of the second embodiment.

In the second embodiment, the light emitting side light reflecting surface 47 is a surface extending from the upper end 45a of the second light guide emitting surface 45 to the rear side in the front-rear direction, and is continuous with the second light guide emitting surface 45. However, the light emitting side light emitting surface 47 reflects the light L2 reflected by the incident side light guide reflecting surface 46 toward the second light guide emitting surface 45 while suppressing the light L2 from spreading in the second lens light guide unit 141. As long as it does, it does not have to be continuous with the second light guide emitting surface 45, and is not limited to the configuration of the second embodiment.

In the second embodiment, the second light guide incident surface 44 has a curved incident surface 44a set as described above. However, the second light guide incident surface 44 refracts the light L2 from the second light source 12 toward the second light guide incident surface 44 on the lower surface of the second lens light guide unit 141, and the incident side light guide reflection. The surface 46 may be set to advance to the provided region, and is not limited to the configuration of the second embodiment. For example, the second light guide incident surface 44 (the curved incident surface 44a) may be a free curved surface based on a curved surface having a curvature center Cc on the emission optical axis Li of the second light source 12, and is optically first. A free curved surface based on a curved surface that shifts the position of the focal point F1 to the position of the second light source 12 (the center of light emission thereof) may be used. That is, the curved incident surface 44a of the second embodiment is set based on the optical ideas of both of the two, but may be set based on the optical idea of either one. In addition, the shape of the curved incident surface 44a may be appropriately set as long as the light L2 from the second light source 12 is refracted toward the second light guide incident surface 44 on the lower surface of the second lens light guide unit 141. , The configuration is not limited to the second embodiment.

10 Vehicle lighting 11 First light source
12 Second light source
16 shade
17 Projection lens
18 board
21 First lens light guide (as an example of lens light guide)
23 First light guide emission surface (as an example of light guide emission surface)
41 Lower lens part
42 Upper lens part
Cl cut offline
Df focal length
Fd lower focus
Fu upper focus
Light distribution pattern for HP driving
La lens axis
Li exit optical axis
LP passing light distribution pattern 141 (as an example of the lens light guide unit) Second lens light guide unit
142 Rod-shaped part 44 Second light guide incident surface (as an example of light guide incident surface)
45 Second light guide exit surface (as an example of light guide exit surface)
46 Incident side light guide reflection surface (as an example of light guide reflection surface)
47 Exit side light guide reflection surface
47a tip

Claims

A first light source that emits light that forms a light distribution pattern for passing,
A second light source that emits light that forms a traveling light distribution pattern,
The light from the first light source is projected onto the front side in the front-rear direction in which the lens axis extends to form the passing light distribution pattern, and the light from the second light source is projected on the front side in the front-rear direction to form the traveling. A projection lens that forms a light distribution pattern for
The first light source and the substrate on which the second light source is provided are provided.
The first light source and the second light source are inclined so that their emission optical axes are parallel to each other and their emission optical axes are dip angles with respect to the front-rear direction.
A vehicle lamp characterized in that the second light source is provided at a position farther from the projection lens than the first light source in the front-rear direction.
The vehicle lamp according to claim 1, wherein the first light source and the second light source have an emission optical axis having a dip angle of 30 to 50 degrees with respect to the front-rear direction.
The first light source is configured by arranging a plurality of the first light sources in the horizontal direction.
Between the plurality of the first light sources and the projection lens, a lens light guide unit that guides the light emitted from the plurality of the first light sources to the projection lens individually corresponds to the plurality of the first light sources. Provided,
The plurality of lens light guide portions have a light guide emission surface directed to the projection lens, and the inclination angle of the light guide emission surface with respect to an orthogonal surface orthogonal to the front-rear direction increases as the distance from the lens axis increases. The vehicle lighting device according to claim 1, wherein the lighting device is characterized by the above.
A shade is provided between the first light source and the second light source to block a part of the light from the first light source and form a cut-off line in the passing light distribution pattern.
The vehicle lamp according to claim 1, wherein the shade has a dip angle having a magnitude of ½ of the angle formed by the emission optical axis with respect to the front-rear direction.
The vehicle use according to claim 1, wherein a plurality of the first light sources are arranged in a horizontal direction, and the distance between adjacent first light sources is increased as the distance from the lens axis increases. Lighting equipment.
In the projection lens, a lower lens portion and an upper lens portion are set around the lens axis, and the lower lens portion and the upper lens portion are set.
In the lower lens portion, a lower focus is set on the lens axis, and the lower focus is set.
The vehicle lamp according to claim 1, wherein an upper focal length having a focal length shorter than that of the lower focal length is set on the lens axis in the upper lens portion.
A plurality of lens light guides, which are individually provided for the plurality of the second light sources and guide the light emitted from the corresponding second light sources to the projection lens, are provided.
The lens light guide portion has a light guide incident surface facing the second light source.
The vehicle lighting fixture according to claim 1, wherein the light guide incident surface is a curved surface having at least a part convex toward the second light source side.
The lens light guide unit includes a light guide reflecting surface that includes an intersection with an exit light axis of the second light source and reflects light from the second light source, and a guide that emits light reflected by the light guide reflecting surface. Has a light emitting surface,
The vehicle lamp according to claim 7, wherein the light guide reflecting surface is a curved surface that collects light from the second light source in the vicinity of the rear focal point of the projection lens by reflection.
The light guide reflecting surface is an incident side light guide reflecting surface provided on the lower lower surface in the vertical direction in the vicinity of the light guide incident surface in the lens light guide portion.
The vehicle lamp according to claim 8, wherein the light guide incident surface is a curved surface that refracts light from the second light source toward the light guide incident surface side on the lower surface of the lens light guide portion.
The lens light guide portion has an exit side light guide reflecting surface that reflects a part of the light reflected by the incident side light guide reflection surface toward the light guide emission surface.
The vehicle lamp according to claim 9, wherein the light emitting side light reflecting surface is a curved surface that is convex on the side opposite to the light emitting light reflecting surface on the incident side.
The light guide reflection surface on the exit side has a tangent line at the tip on the light guide exit surface side of 5 to 10 degrees with respect to a straight line connecting the intersection and the point where the light guide reflection surface on the incident side concentrates. The vehicle lighting device according to claim 10, wherein the light fixture is angled.
The vehicle lighting tool according to claim 11, wherein the light guide emission surface is orthogonal to a straight line connecting the intersection and the point where the reflected light from the incident side light guide reflection surface is collected.