JP7439516B2 - Vehicle lights - Google Patents

Description

The present disclosure relates to a vehicle lamp.

A vehicle lamp is one in which light from a first light source is emitted from a projection lens to form a light distribution pattern for passing each other, and light from a second light source is emitted from a projection lens to form a light distribution pattern for driving. be.

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

JP2017-199660A

Here, the above-mentioned vehicle lighting device intersects the light from the first light source and the light from the second light source and then projects the light using a projection lens, thereby creating a light distribution pattern for passing each other and a light distribution pattern for driving. Form. On the other hand, in the above vehicle lamp, the first light source and the second light source generally emit light in a direction perpendicular to the substrate. For this reason, the above-mentioned vehicle lamp has an improvement in that the first light source and the second light source are provided on the same board, and the light from them is used to appropriately form a light distribution pattern for passing each other and a light distribution pattern for driving. There's room.

The present disclosure has been made in view of the above circumstances, and while providing the first light source and the second light source on the same board, the light from them can be used to appropriately create a light distribution pattern for passing each other and a light distribution pattern for driving. An object of the present invention is to provide a vehicle lamp that can be formed.

The vehicle lamp of the present disclosure includes a first light source that emits light that forms a light distribution pattern for passing each other, a second light source that emits light that forms a light distribution pattern for driving, and a light source that emits light that forms a light distribution pattern for driving. projection of light from the second light source to the front side in the front-rear direction in which the lens axis extends to form the light distribution pattern for passing each other; and projection of light from the second light source to the front side in the front-rear direction to form the light distribution pattern for driving. a lens, and a substrate on which the first light source and the second light source are provided, and the first light source and the second light source have their emission optical axes parallel to each other, and the emission optical axis The second light source is inclined at an inclined 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.

According to the vehicle lamp of the present disclosure, while the first light source and the second light source are provided on the same substrate, it is possible to appropriately form a light distribution pattern for passing each other and a light distribution pattern for driving using the light from them.

FIG. 1 is an explanatory diagram showing the configuration of a vehicle lamp as an example of an embodiment of the vehicle lamp according to the present disclosure. 2 is a cross-sectional view taken along line II in FIG. 1. FIG. FIG. 3 is an explanatory diagram showing the configuration of a first lens light guiding section of the vehicle lamp. FIG. 3 is an explanatory diagram showing the configuration of a second lens light guiding section of the vehicle lamp. It is an explanatory view showing a light distribution pattern for passing each other. It is an explanatory view showing a light distribution pattern for driving. It is an explanatory view showing a state where a light distribution pattern for running and a light distribution pattern for passing each other are overlapped.

Example 1 of a vehicle lamp 10 as an embodiment of a vehicle lamp according to the present disclosure will be described below with reference to FIGS. 1 to 7. In addition, in FIG. 2, hatching indicating a cross section is omitted to avoid complication.

The vehicle lamp 10 is used as a lamp for a vehicle such as an automobile, and is used, for example, as a headlamp, fog lamp, or the like. The vehicle lamp 10 has a light chamber formed by covering the open front end of the lamp housing with an outer lens on both left and right sides of the front of the vehicle, and is equipped with a vertical optical axis adjustment mechanism and a widthwise optical axis adjustment mechanism. Provided via a mechanism. In the following description, in the vehicle lamp 10, the direction in which the lens axis La of the projection lens 17, which is the direction in which light is irradiated, extends is referred to as the front-rear direction (Z in the drawing), and the front-rear direction is assumed to be along a horizontal plane. Let the vertical direction be the up-down direction (denoted as Y in the drawings), and let the direction (horizontal direction) orthogonal to the front-rear direction and the up-down direction be the width direction (denoted as X in the drawings). The front side in the longitudinal direction indicates the front of the vehicle in the vehicle lamp 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, forming a headlamp 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 the optical center axis of the projection lens 17.

The plurality of first light sources 11 are arranged in the width direction, and in Example 1, seven (see FIG. 3) are arranged. 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 supplied with power from a lighting control circuit and is appropriately lit. The seven first light sources 11 are arranged in the width direction in a plane perpendicular to the vertical direction, with the middle one being provided on the lens axis La, and the intervals increasing toward the outside in the width direction. (See Figure 3). In Example 1, 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 adjacent sides is 6 mm, the interval from them to the outside of the adjacent side is 7 mm, and the interval from these to the adjacent outside is 6 mm, The distance to the outermost point is 18 mm. It should be noted that the number and spacing of the first light sources 11 may be set appropriately so that the spacing may be uniform, or the difference in spacing may be irregular, and is not limited to the configuration of the first embodiment.

The plurality of second light sources 12 are arranged in the width direction, and in the first embodiment, twelve (see FIG. 4) are arranged. Each of the second light sources 12 is composed of a light emitting element such as an LED, and is located below the first light source 11 in the vertical direction and on the rear side in the front-back direction, and is mounted on the same substrate 18 as the first light source 11 and on the same plane. implemented on top. Therefore, the normal direction of the substrate 18 and the front surface 13a is at an inclined angle with respect to the front-back direction on a plane including the front-back direction and the up-down direction. Each of the second light sources 12 is appropriately lit all at once or individually by being supplied with power from the lighting control circuit. Note that the number of second light sources 12 may be set as appropriate and is not limited to the configuration of the first embodiment.

Each of the first light sources 11 and each of the second light sources 12 emits light from a flat light emitting portion, and has an emitting optical axis Li set in a direction perpendicular to the board 18 on which it is mounted. Hereinafter, light emitted by each first light source 11 will be referred to as light L1, and light emitted by each second light source 12 will be referred to as light L2. Each first light source 11 and each second light source 12 are mounted on the same substrate 18, so that their respective emission optical axes Li are parallel. Each output optical axis Li is within the range of 30 degrees to 50 degrees in inclination with respect to the front-rear direction, and in the first embodiment, it is 45 degrees. In the first embodiment, each of the output optical axes Li is set by determining an angle with respect to the front-rear direction of the substrate 18.

The heat sink member 13 is a heat radiating member that releases heat generated by each first light source 11 and each second light source 12 to the outside, and is formed of a metal material or resin material with high thermal conductivity. In the heat sink member 13, a plurality of plate-shaped radiation fins 13b are provided in parallel on the opposite side from 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 output optical axis Li is at the above angle.

The first light guide lens 14 guides the light L1 emitted from each first light source 11 mounted on the substrate 18 to the projection lens 17. The first light guiding lens 14 is made of transparent resin, and as shown in FIG. 3, seven first lens light guiding parts are arranged in the width direction and individually correspond to each first light source 11. It has 21. Each first lens light guide section 21 has a first light guide entrance surface 22 facing the corresponding first light source 11 and a first light guide exit surface 23 facing the projection lens 17 side.

As shown in a partially enlarged view in FIG. 2, each first light guide entrance surface 22 has an overall shape recessed inside the first lens light guide section 21 (on the opposite side from the first light source 11), It has a curved entrance surface 22a that is convexly curved outward at the center thereof, and an annular entrance surface 22b that surrounds the curved entrance surface 22a. Further, around each first light guide entrance surface 22, a conical reflection surface 22c surrounding the annular entrance surface 22b is provided. Each curved entrance surface 22a has a focal point on the rear side substantially aligned with the light emission center of the corresponding first light source 11, and allows the light L1 emitted from the first light source 11 to travel parallel to the output optical axis Li. The light is made to enter the first lens light guide section 21 as light. Note that this parallel light (parallel light) refers to light that is collimated by the light L1 passing through the curved incident surface 22a.

The annular entrance surface 22b is provided to protrude toward each first light source 11 side, and directs the light L1 from the first light source 11 that does not travel to the curved entrance surface 22a to the first lens light guide section 21. Make it incident. The reflective surface 22c is formed at a position where the light L1 entering the first light guide lens 14 from the annular entrance surface 22b travels. When the reflecting surface 22c reflects the light L1 that has entered from the annular entrance surface 22b, it becomes parallel light that travels parallel to the output optical axis Li. Note that the reflective surface 22c may reflect the light L1 using total reflection, or may reflect the light L1 by adhering aluminum, silver, or the like by vapor deposition, painting, or the like. For these reasons, each first light guiding entrance surface 22 allows the light L1 emitted from the corresponding first light source 11 to travel into the first light guiding lens 14 as parallel light traveling parallel to the output optical axis Li. Then, the light is guided to the first light guide/output surface 23.

Each of the first light guide/output surfaces 23 emits the parallel light L1 that is incident from the first light guide/incidence surface 22 toward the projection lens 17 . Each first light guide/output surface 23 has an upper exit surface section 23a and a lower exit surface section 23b in a cross section perpendicular to the width direction. Each upper exit surface section 23a is provided in a region where the light L1 reflected by the reflection surface 22c located above the curved entrance surface 22a advances, and is a concave surface curved convexly toward the first light guide entrance surface 22 side. ing. Each upper exit surface portion 23a refracts the parallel light L1 that has passed through the first light guide entrance surface 22, and causes the light L1 to travel toward a lower lens portion 41 of the projection lens 17, which will be described later. The focal points on the front side (projection lens 17 side) of each lower exit surface section 23b are arranged on a focal plane (image plane) including the lower focal point Fd of the lower lens section 41 near the tip edge 16a of the shade 16. It has been set as follows. Each lower output surface portion 23b refracts the parallel light L1 that has passed through the first light guide entrance surface 22, thereby condensing it near the tip edge 16a.

As shown in FIG. 3, these seven first light guiding/emitting surfaces 23 are arranged such that in a plane perpendicular to the vertical direction, the first lens light guiding part 21 in the middle is an orthogonal plane Op perpendicular to the lens axis La. They are substantially parallel to each other, and are inclined with respect to the orthogonal plane Op so as to move outward in the width direction toward the rear side (toward the first light source 11 side) when removed from the lens axis La. The seven first light guide/output surfaces 23 have an inclination angle with respect to the orthogonal plane Op that increases as they go outward in the width direction. That is, the seven first light guiding/emitting surfaces 23 have their front focal points aligned on a focal plane including the lower focal point Fd in the vicinity of the tip edge 16a, and the seven first light guiding/emitting surfaces 23 are aligned 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 axis La, that is, the distance from the lens axis La in the width direction of the provided first lens light guide section 21.

The first light guiding lenses 14 are connected to each other by connecting portions 24 with the first lens light guiding portions 21 having the above-mentioned positional relationship. The first light guiding lens 14 is configured such that the connecting portion 24 is fixed to the lens holder or the heat sink member 13 for assembling the heat sink member 13 and the projection lens 17. The positional relationship of the light sections 21 is set.

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

In each second lens light guiding section 31, a portion of each rod-shaped portion 32 facing the second light source 12 is a second light-guiding incident surface 34, and a portion of the plate-shaped portion 33 facing the projection lens 17 side is a second light guiding incident surface 34. 2 as the light guiding and exiting surface 35. Therefore, the second light guide entrance surface 34 is made up of 12 surfaces that individually face the 12 second light sources 12, and the second light guide exit surface 35 is made up of 12 surfaces that individually face the 12 second light sources 12. are connected in the width direction as a single surface. In addition, each second lens light guiding section 31 is provided with a light guiding reflective surface 36, as shown in FIG. The light guide reflection surface 36 is provided on the lower side in the vertical direction in the vicinity of the second light guide incident surface 34 of the second lens light guide section 31 (mainly in the rod-shaped portion 32), and is provided on the lower side in the vertical direction. The light L2 incident from the surface 34 is reflected toward the second light guide/output surface 35 side, that is, the front side in the front-rear direction and upward. Note that the light guide reflection surface 36 may have any other configuration, such as one that utilizes total internal reflection, or one that undergoes reflection treatment, as long as it reflects as described above. The second light guiding/emitting surface 35 emits the light L2 reflected by the light guiding/reflecting surface 36 toward the projection lens 17 . Further, in each second lens light guiding section 31, reflective surfaces may be provided at other locations in order to guide the light L2 incident from the second light guiding entrance surface 34 to the second light guiding exit surface 35 side. However, the present invention 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 guiding lens 15 and has a plate shape extending in the width direction. Therefore, the shade 16 is provided between the optical path from each first light source 11 through the first light guide lens 14 and the optical path from each second light source 12 through the second light guide lens 15. In the shade 16, on a plane orthogonal to the width direction, the angle with respect to the front-rear direction is smaller than each of the emission optical axes Li of each of the first light sources 11 and each of the second light sources 12, and in the first embodiment, each emission optical axis The angle is 22.5 degrees, which is half the angle made by Li. 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 front end edge 16a of the shade 16 has a shape in which two horizontal edges at different positions in the vertical direction are connected by an inclined edge (see FIG. 1). The shade 16 blocks 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 its first lens light guide parts 21) with its tip edge 16a, so that the shade 16 can avoid passing each other. A cutoff line CL (see FIG. 5) is formed by connecting two horizontal cutoff lines with an inclined cutoff line at the upper edge of the light distribution pattern LP. Note that the size of the shade 16 may be set appropriately as long as the cutoff line CL is formed at the tip edge 16a, and the size 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. This reflective surface 16b reflects the light L1 from each first light source 11 guided by the first light guide lens 14, and causes the light L1 to travel to the projection lens 17. Therefore, the shade 16 can improve the efficiency of using the light L1 from each first light source 11. In addition, the shade 16 has an inclination angle that is half the angle that each output optical axis Li of each first light source 11 makes with respect to the front-rear direction. Therefore, the shade 16 can reflect the light L1 along the output 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 the other 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. For these reasons, the shade 16 can cause the light L1 from the first light source 11 that has passed through the first light guide lens 14 to travel in the vicinity of the lens axis La in a direction parallel to or close to the lens axis La. can.

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

As shown in FIG. 2, the projection lens 17 includes a lower lens part 41 located on the lower side and an upper lens part 42 located on the upper side. Both lens portions (41, 42) have different curvatures of the exit surfaces 17a in cross sections in the radial direction from the lens axis La, and have different focal lengths. In the lower lens portion 41, the lower focal point Fd on the rear side in the projection direction is located near the tip edge 16a of the shade plate 16 on the lens axis La. In the upper lens section 42, the upper focal point Fu on the rear side in the projection direction is set on the lens axis La to the front side in the projection direction than the lower focal point Fd. The projection lens 17 continuously changes its focal length from a lower focal point Fd on the lower lens section 41 side to an upper focal point Fu on the upper lens section 42 side at a location where the lower lens section 41 and the upper lens section 42 are connected. It is being changed (so-called gradual change).

Next, lighting of the vehicle lamp 10 will be explained. The vehicle lamp 10 is provided in a light chamber, and an external connector is connected to a board 18 via a connector connection portion. The vehicular lamp 10 supplies power to each first light source 11 and each second light source 12 mounted on a board 18 from a lighting control circuit via an external connector and a connector connection part. Each second light source 12 is turned on and off as appropriate.

As shown in FIG. 2, in the vehicle lamp 10, when each first light source 11 is turned on, the light L1 from each first light source 11 is transmitted to each first light guide entrance surface 22 of the first light guide lens 14. The light L1 that enters the curved incident surface 22a and passes through the curved incident surface 22a is converted into parallel light, and the light L1 that passes through the annular incident surface 22b is reflected by the reflective surface 22c and exits from the first light guide/output 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, which is set near the tip edge 16a of the shade 16 on the lens axis La. As shown in FIG. 5, the light L1 is projected by the projection lens 17, and as shown in FIG. A light region lp is formed. The seven partial light distribution regions lp are integrally formed side by side in the width direction while partially overlapping to form a light distribution pattern LP for passing each other. The light distribution pattern LP for passing each other is such that a part of each light L1 is blocked by the tip edge 16a, is shaped along the tip edge 16a, advances to the projection lens 17, and is projected by the projection lens 17. A cutoff line CL is formed at the upper edge.

Further, as shown in FIG. 2, 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 is transmitted from the second light guide entrance surface 34 to the second light guide lens. The light enters each of the 15 second lens light guide sections 31 , is guided by each second lens light guide section 31 , and is emitted from the second light guide/output 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, which is set on the front side of the tip edge 16a in the front-rear direction on the lens axis La. The light L2 is projected by the projection lens 17, and as shown in FIG. A light region hp is formed. The 12 partial light distribution regions hp are integrally formed side by side in the width direction while partially overlapping to form a traveling light distribution pattern HP.

The vehicle lamp 10 of the first embodiment is an ADB (Adaptive Driving Beam), and by individually turning on and off each second light source 12, 12 partial light distribution areas can be created. Partial light distribution area hp in a specific direction of hp can be turned on and off. Thereby, the vehicle lamp 10 enables partial light distribution control in any direction in the driving light distribution pattern HP.

As described above, by lighting each of the first light sources 11, the vehicle lamp 10 can form a light distribution pattern LP for passing each other having a cut-off line CL, as shown in FIG. It can be a so-called low beam). Furthermore, by lighting each second light source 12 in addition to each first light source 11, the vehicle lamp 10 can create a driving light distribution pattern overlapping the light distribution pattern LP for passing each other, as shown in FIG. HP can be formed, and light distribution during driving (so-called high beam) can be achieved. As described above, the vehicle lamp 10 can individually control any partial light distribution area hp in the driving light distribution pattern HP by turning on and off each second light source 12 individually. , ADB functions can also be realized.

Next, the operation of the vehicle lamp 10 will be explained. 2. Description of the Related Art Conventionally, vehicle lamps have been considered in which light from each first light source forms a light distribution pattern for passing each other, and light from each second light source forms a light distribution pattern for driving. In this vehicle lamp, the light from each first light source is made to travel from above the lens axis in the vertical direction to the lower focal point of the lower lens part, and then projected by the projection lens to create a light distribution pattern for passing each other. form. In addition, in this vehicle lamp, the light from each second light source is made to travel from the lower side of the lens axis in the vertical direction to the upper focal point of the upper lens part, and then is projected by the projection lens, thereby distributing light for driving. form a pattern. Therefore, in the vehicle lamp, each first light source and each second light source are arranged so that their emitted lights intersect with each other. For this reason, in the vehicle lamp, it is difficult to provide each first light source and each second light source on the same substrate.

On the other hand, the vehicle lamp 10 has each of the first light sources 11 and each of the second light sources 12 mounted on the same substrate 18 so that the respective emission optical axes Li are parallel to each other and at an inclination angle with respect to the front-rear direction. It is set at 30 degrees to 50 degrees. Therefore, the vehicle lamp 10 can direct the output optical axis Li of each first light source 11 toward the lower focal point Fd of the lower lens portion 41, and the first light guide lens 14 allows each first light source 11 to It is possible to easily guide the light L1 from the center to the lower focal point Fd. Thereby, 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. . In addition, the vehicle lamp 10 is configured to move each second light source 12 forward and backward relative to each first light source 11, although the emission optical axis Li of each second light source 12 is significantly different from the direction in which it faces the upper focal point Fu of the upper lens portion 42. 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 in guiding light in the second light guide lens 15, and the second light guide lens 15 can change the direction in which the light L2 from each second light source 12 travels. , the light L2 can be efficiently guided to the upper focal point Fu. As a result, the vehicle lamp 10 provides each of the first light sources 11 and each of the second light sources 12 on the same substrate 18, and efficiently utilizes the light L1 and light L2 from them to create the light distribution pattern LP for passing each other. A driving light distribution pattern HP can be formed.

Further, the vehicle lamp 10 has a configuration in which a portion of the light L1 from each first light source 11 that has passed through the first light guide lens 14 is blocked by a tip edge 16a, and the upper surface of the shade 16 is a reflective surface 16b. . Therefore, the vehicle lamp 10 can reflect the light L1 from each first light source 11 that is blocked near the tip edge 16a on the reflective surface 16b and allow it to proceed to the projection lens 17. The utilization efficiency of the light L1 from 11 can be improved. In addition, the vehicular lamp 10 is provided with a shade 16 having an inclination angle that is half the angle formed by the emission optical axis Li of each first light source 11 with respect to the front-rear direction. Therefore, the vehicle lamp 10 can make the traveling direction of the light L1 reflected by the reflective surface 16b nearly parallel to the front-rear direction (a state where the inclination with the front-rear direction is small), and in this state, the lens axis of the projection lens 17 It can be advanced to the vicinity of La. Thereby, the vehicle lamp 10 can cause the light L1 reflected by the reflective surface 16b to travel near the center where the vertical line and the horizontal line intersect in the light distribution pattern LP for passing each other, and the light distribution pattern HP for driving It is possible to improve the utilization efficiency of the light L1 from each first light source 11 while forming the light L1 more appropriately.

Further, in the vehicle lamp 10, the distance between the seven first light sources 11 in the width direction increases toward the outside. Therefore, the vehicular lamp 10 can form each partial light distribution area lp over a wide range along the horizontal line while making the area near the center where the vertical line and the horizontal line intersect the brightest on the projection plane. Thereby, the vehicle lamp 10 can form the light distribution pattern LP for passing each other by sufficiently expanding the partial light distribution regions 1p in the horizontal direction and arranging the partial light distribution regions 1p without gaps. Here, since the light distribution pattern LP for passing each other is required to be brightest in the vicinity of the lens axis La, the vehicle lamp 10 can appropriately form the light distribution pattern LP for passing each other with a simple configuration. In addition, in the vehicle lamp 10, in each first lens light guide portion 21 of the first light guide lens 14, the inclination angle of the first light guide exit surface 23 with respect to the orthogonal plane Op increases as the distance from the lens axis La increases in the width direction. It's getting bigger. Therefore, the vehicle lamp 10 can condense each light L1 at a lined up position on the focal plane (image plane) including the lower focal point Fd of the lower lens part 41 near the tip edge 16a of the shade 16, so that the lights L1 can pass each other. The light distribution pattern LP can be appropriately formed.

In the vehicle lamp 10, the lower focal point Fd of the lower lens section 41 has a relatively long focal length Df, and the upper focal point Fu of the upper lens section 42 has a relatively short focal length Df on the lens axis La. In the vehicle lamp 10, the lower focal point Fd of the lower lens portion 41 is set near the tip edge 16a of the shade 16. Therefore, in the vehicle lamp 10, the light L1 emitted from each first light source 11 and guided by the first light guiding lens 14 is directed to the shade 16 at the lower focal plane (image plane) including the lower focal point Fd. The light can be made to pass above the tip edge 16a and enter the projection lens 17. Therefore, in the vehicle lamp 10, the light L1 from each first light source 11 can be guided below the cutoff line CL on the projection plane, and the light distribution pattern LP for passing each other can be appropriately formed.

Further, in the vehicle lamp 10, the upper focal point Fu of the upper lens portion 42 is closer to the projection lens 17 than the lower focal point Fd set near the tip edge 16a of the shade 16 on the lens axis La. Therefore, in the vehicle lamp 10, the light L2 from each second light source 12 is not blocked by the shade 16 in the vicinity of the upper focal point Fu, so the upper focal point Fu in the focal plane (image plane) including the upper focal point Fu The light L2 from each of the second light sources 12 can be made to travel to the projection lens 17 through the upper focal point Fu in the same focal plane as well as through the upper focal point Fu in the same focal plane. As a result, in the vehicle lamp 10, as shown in FIGS. 6 and 7, a portion of the light L2 from each second light source 12 is blocked by the tip edge 16a of the shade 16, resulting in a light distribution pattern HP for driving. The lower edge can be shaped to follow the tip edge 16a, and the lower edge can be positioned below the cutoff line CL on the projection plane. 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 to a point below the cutoff line CL on the projection plane, and can form the light distribution pattern LP for driving below the cutoff line CL on the projection plane. It is possible to suppress the occurrence of dark areas between the images. Thereby, the vehicle lamp 10 can appropriately form the light distribution pattern LP for passing each other and the light distribution pattern HP for driving while giving the projection lens 17 a good appearance with no steps.

The vehicle lamp 10 of Example 1 can obtain the following effects.

In the vehicle lamp 10, the first light source 11 and the second light source 12 are tilted at an angle of inclination with respect to the front-rear direction while making their emission optical axes Li parallel to each other, so that the projection is lower than that of 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. For this reason, the vehicle lamp 10 provides the first light source 11 and the second light source 12 on the same substrate 18, and appropriately uses the light L1 and light L2 from them to create a light distribution pattern LP for passing each other and a light distribution pattern for driving. Can create HP.

In the vehicle lamp 10, the emission optical axis Li of the first light source 11 and the second light source 12 is set at an inclination angle of 30 degrees to 50 degrees with respect to the front-rear direction. Therefore, the vehicle lamp 10 can easily form both light distribution patterns (LP, HP) using the lights L1 and L2 from both light sources (11, 12) provided on the same substrate 18. Can be done. That is, by setting the output optical axis Li within the above-mentioned angular range, the vehicle lamp 10 allows the first light guide lens 14 and the second light guide lens 15 to be configured easily, and the light L1, L2 guided by each to be can be appropriately guided to the projection lens 17.

Further, in the vehicle lamp 10, in the plurality of first lens light guide portions 21, as the distance from the lens axis La increases, the inclination angle of the first light guide/output surface 23 with respect to the orthogonal plane Op perpendicular to the front-rear direction increases. Therefore, the vehicle lamp 10 appropriately focuses the light L1 from each first light source 11 in the vicinity of the tip edge 16a of the shade 16 even if the widthwise interval of each first light source 11 is set as described above. Therefore, the light distribution pattern LP for passing each other can be appropriately formed.

Furthermore, the vehicle lamp 10 is provided with a shade 16 that forms a cut-off line CL of the light distribution pattern LP for passing each other between the first light source 11 and the second light source 12, and the shade 16 is arranged in the front-rear direction. The angle of inclination is set to be 1/2 of the angle formed by the output optical axis Li. Therefore, the vehicle lamp 10 can prevent the light L1 from the first light source 11 reflected by the reflective surface 16b from being projected onto an unexpected position in the region forming the driving light distribution pattern HP.

The vehicle lamp 10 is configured such that a plurality of first light sources 11 are arranged horizontally, and the distance between adjacent first light sources 11 increases as the distance from the lens axis La increases. For this reason, the vehicle lamp 10 can make the vicinity of the lens axis La the brightest, while sufficiently widening it in the horizontal direction and arranging the partial light distribution regions LP without any gaps, and appropriately forming the light distribution pattern LP for passing each other. .

In the vehicle lamp 10, in the projection lens 17, the upper focal point Fu of the upper lens section 42 is set to have a shorter focal length Df than the lower focal point Fd of the lower lens section 41 on the lens axis La. Therefore, the vehicle lamp 10 can be appropriately formed such that the upper end of the light distribution pattern LP for passing each other and the lower end of the light distribution pattern HP for driving overlap.

Therefore, the vehicle lamp 10 of Example 1 as a vehicle lamp according to the present disclosure provides the first light source 11 and the second light source 12 on the same substrate 18, and appropriately uses the light L1 and light L2 from them. A light distribution pattern LP for passing each other and a light distribution pattern HP for traveling can be formed.

Although the vehicle lamp of the present disclosure has been described above based on Example 1, the specific configuration is not limited to Example 1, and departs from the gist of the invention according to each claim. Changes and additions to the design are permitted unless otherwise specified.

In the first embodiment, the ADB function can be realized by individually controlling the lighting/extinguishing of each partial light distribution area hp in the driving light distribution pattern HP. However, in the vehicle lamp 10, the first light source 11 that forms the light distribution pattern LP for passing each other and the second light source 12 that forms the light distribution pattern HP for driving are provided on the same substrate 18, and the respective emitted light is The configuration is not limited to the first embodiment, as long as the axes Li are parallel to each other and the respective output optical axes Li have an inclination angle of 30 degrees to 50 degrees with respect to the front-rear direction.

Further, in Example 1, seven first lens light guides 21 and seven first light sources 11 are provided. However, the number of first lens light guide parts 21 and first light sources 11 may be set as appropriate depending on the number of partial light distribution areas LP to be formed and the size and shape of the light distribution pattern LP for passing each other. 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 at an angle of inclination of 30 degrees to 50 degrees with respect to the front-rear direction. However, the first light source 11 and the second light source 12 are tilted at an angle of inclination with respect to the front-rear direction while making their emission optical axes Li parallel to each other, and the position is further away from the projection lens 17 than the first light source 11 in the front-rear direction. As long as the second light source 12 is provided in the second light source 12, the angle of the output optical axis Li with respect to the front-rear direction may be set as appropriate, and is not limited to the configuration of the first embodiment.

10 Vehicle lamp 11 First light source 12 Second light source 16 Shade 17 Projection lens 18 Substrate 21 First lens light guide (as an example of a lens light guide) 23 First guide (as an example of a light guide exit surface) Light exit surface 41 Lower lens section 42 Upper lens section Cl Cutoff line Df Focal length Fd Lower focus Fu Upper focus HP Light distribution pattern for traveling La Lens axis Li Output optical axis LP Light distribution pattern for passing each other

Claims (6)

a first light source that emits light forming a light distribution pattern for passing each other;
a second light source that emits light forming a light distribution pattern for driving;
The light from the first light source is projected to the front side in the front-rear direction in which the lens axis extends to form the light distribution pattern for passing each other, and the light from the second light source is projected to the front side in the front-rear direction to prevent the traveling. a projection lens that forms a light distribution pattern for
a substrate on which the first light source and the second light source are provided,
The first light source and the second light source have their respective emission optical axes parallel to each other, and the emission optical axes are inclined at an oblique angle with respect to the front-rear direction,
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 is configured such that a plurality of the first light sources are arranged horizontally,
Between the plurality of first light sources and the projection lens, a lens light guide section that guides the light emitted from the plurality of first light sources to the projection lens corresponds to the plurality of first light sources individually. provided,
The plurality of lens light guide parts each have a light guide/output surface facing the projection lens, and the angle of inclination of the light guide/output surface with respect to an orthogonal plane perpendicular to the front/rear direction increases as the distance from the lens axis increases. ,
The vehicular lamp is characterized in that the light guiding/emitting surface is inclined with respect to the orthogonal surface so as to move outward from the lens axis in the width direction and toward the rear side . 2. The vehicular lamp according to claim 1, wherein the first light source and the second light source have their emitting optical axes inclined at an angle of 30 degrees to 50 degrees with respect to the longitudinal direction. A shade is provided between the first light source and the second light source, which blocks part of the light from the first light source to form a cutoff line in the light distribution pattern for passing each other,
3. The vehicle lamp according to claim 1, wherein the shade has an inclination angle that is half the angle that the output optical axis makes with respect to the longitudinal direction . Each of the plurality of lens light guide portions has a light guide incident surface facing the first light source and a reflective surface surrounding the light guide incident surface,
The light guiding and exiting surface has an upper exiting surface portion provided in a region where light reflected by the reflecting surface located above the light guiding and incident surface travels, and a focal point located near a leading edge of the shade. 4. The vehicular lamp according to claim 3 , further comprising a lower emission surface portion . Claims 1 to 4 are characterized in that a plurality of the first light sources are arranged in a horizontal direction, and the distance between adjacent first light sources increases as the distance from the lens axis increases. The vehicle lamp according to any one of the above. In the projection lens, a lower lens part and an upper lens part are set around the lens axis,
In the lower lens section, a lower focus is set on the lens axis,
The vehicle according to any one of claims 1 to 5, wherein the upper lens portion has an upper focus having a shorter focal length than the lower focus on the lens axis. Lighting equipment.