JP2023077595A - Vehicular lighting fixture - Google Patents

Abstract

To form a light distribution pattern for OHS irradiation while maintaining brightness and uniformity of a light distribution pattern for low beam in a vehicular lighting fixture which is constituted so as to radiate emission light from a plurality of light emitting elements toward the front of the lighting fixture via a projection lens.SOLUTION: A plurality of light emitting elements 30 is arranged in a state of being arrayed in a left-to-right direction and in a state where a light emitting surface 30a is faced toward a projection lens 50, and between the plurality of light emitting elements 30 and the projection lens 50, a shade 60 is arranged for shielding a part of the emission light from the plurality of light emitting elements 30 so as to form a cut-off line of a light distribution pattern for low beam. Then, below the shade 60, a reflection member 70 is arranged which reflects direct light emitted further to a lighting fixture rear side than the shade 60 from at least one light emitting element 30 out of the plurality of light emitting elements 30 toward the projection lens 50. Then, by the reflection light, a light distribution pattern for OHS irradiation is formed.SELECTED DRAWING: Figure 3

Description

The present invention relates to a vehicle lamp having a projection lens.

Conventionally, as a configuration of a vehicle lamp, there has been known one configured to form a low-beam light distribution pattern by irradiating light emitted from a plurality of light emitting elements toward the front of the lamp through a projection lens. ing.

In "Patent Document 1", as such a vehicle lamp, a light distribution pattern for illuminating an overhead sign (OHS) installed above the road surface in front of the lamp is cut. It is described that it is configured to be formed in a space above the off-line.

In the vehicle lamp described in "Patent Document 1", a light distribution pattern for OHS irradiation is formed by forming a stepped portion on the rear surface of the projection lens.

WO2020/044605

In the vehicle lamp described in the above-mentioned "Patent Document 1", part of the irradiation light that should originally form the light distribution pattern for low beam is used to form the light distribution pattern for OHS irradiation. The brightness of the low-beam light distribution pattern is correspondingly reduced, and uneven light distribution tends to occur in the low-beam light distribution pattern.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and provides a vehicle lamp configured to irradiate light emitted from a plurality of light emitting elements toward the front of the lamp via a projection lens. It is an object of the present invention to provide a vehicle lamp capable of forming a light distribution pattern for OHS irradiation while maintaining the brightness and uniformity of the light distribution pattern.

The invention of the present application is intended to achieve the above object by employing a configuration provided with a predetermined reflecting member.

That is, the vehicle lamp according to the present invention is
A vehicle comprising a plurality of light emitting elements and a projection lens, and configured to form a low beam light distribution pattern by irradiating light emitted from the plurality of light emitting elements toward the front of the lamp via the projection lens. In lighting fixtures,
The plurality of light emitting elements are arranged in a horizontal direction with their light emitting surfaces facing the projection lens,
A shade is arranged between the plurality of light emitting elements and the projection lens for blocking part of the light emitted from the plurality of light emitting elements in order to form a cutoff line of the light distribution pattern for low beam,
A reflecting member is arranged below the shade to reflect direct light emitted from at least one of the plurality of light emitting elements to the rear side of the lamp from the shade toward the projection lens. It is characterized by

The above-mentioned "plurality of light emitting elements" are not particularly limited in terms of their specific arrangement and the number of arranged elements, as long as they are arranged in a horizontal direction with their light emitting surfaces facing the projection lens.

If the above-mentioned "shade" is configured so as to form a cutoff line of a low-beam light distribution pattern by shielding part of the light emitted from a plurality of light emitting elements, its specific arrangement and The shape and the like are not particularly limited.

The "reflecting member" is arranged below the shade and is configured to reflect, toward the projection lens, direct light emitted from at least one of the plurality of light emitting elements to the rear side of the lamp with respect to the shade. The specific arrangement, shape, and the like are not particularly limited as long as they are the same.

A vehicle lamp according to the present invention is configured to form a low-beam light distribution pattern by irradiating light emitted from a plurality of light emitting elements toward the front of the lamp via a projection lens. The light-emitting elements are arranged in a horizontal direction with the light-emitting surfaces facing the projection lens. A shade is arranged to block part of the light emitted from the plurality of light emitting elements in order to form a light emitting element. Since the reflecting member is arranged to reflect the direct light emitted to the rear side of the lamp toward the projection lens, the following effects can be obtained.

That is, the direct light emitted from at least one of the plurality of light emitting elements to the rear side of the lamp from the shade is reflected by the reflecting member arranged below the light fixture, and then enters the projection lens. Since the light is emitted toward a space above the cutoff line of the light distribution pattern for low beam, the emitted light can form the light distribution pattern for OHS irradiation.

In this case, the light distribution pattern for OHS irradiation can be formed without affecting the configuration of the lamps for forming the light distribution pattern for low beam. The light distribution pattern for OHS irradiation can be formed while maintaining the uniformity.

As described above, according to the present invention, in a vehicle lamp configured to irradiate light emitted from a plurality of light emitting elements toward the front of the lamp via a projection lens, the brightness of the light distribution pattern for low beam and its A light distribution pattern for OHS irradiation can be formed while maintaining uniformity.

In addition, direct light emitted from the light emitting element to the rear side of the lamp from the shade may be unintentionally reflected by other constituent members of the lamp, becoming stray light and causing glare. can effectively suppress the occurrence of such stray light.

In the above configuration, if the reflecting member is configured to diffusely reflect the direct light from the plurality of light emitting elements in the horizontal direction, the light distribution pattern for OHS irradiation can be formed with substantially uniform brightness. can be done.

In the above configuration, if the reflective member is formed integrally with the shade, the accuracy of light distribution control can be improved, whereby the cut-off line of the light distribution pattern for low beam and the light distribution pattern for OHS irradiation can be improved. It is possible to improve the accuracy of the positional relationship with. Moreover, by adopting such a configuration, it is possible to reduce the number of parts of the vehicle lamp.

In the above configuration, if the configuration further includes a reflector for reflecting the light emitted from the plurality of light emitting elements toward the projection lens, the brightness of the low beam light distribution pattern can be increased, and the brightness of the light distribution pattern can be increased. The degree of freedom of light distribution can be increased. In addition, if the reflector is integrally formed with the shade, the accuracy of light distribution control can be further improved, and the number of parts of the vehicle lamp can be reduced.

In the above configuration, a plurality of second light emitting elements that are additionally lit when the high beam is irradiated and a second reflector that reflects the light emitted from the plurality of second light emitting elements toward the projection lens are further provided below the shade. is arranged, and the reflecting member is integrally formed with the second reflector, a lighting fixture configuration that can selectively form a low beam light distribution pattern and a high beam light distribution pattern Even in this case, it is possible to increase the accuracy of light distribution control and reduce the number of parts of the vehicle lamp.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side cross-sectional view showing a vehicle lamp according to an embodiment of the present invention; View from the direction of arrow II in Fig. 1 III-III line sectional view of FIG. (a) is a diagram showing a low-beam light distribution pattern formed by the light emitted from the vehicle lamp, and (b) is a diagram similar to (a) showing a comparative example. FIG. 3 is a view similar to FIG. 2, showing a first modification of the above embodiment; FIG. 3 is a view similar to FIG. 2 showing a second variant of the above embodiment; A view similar to FIG. 3 showing the second modification (a) is a diagram showing a low beam light distribution pattern formed by the light emitted from the vehicle lamp according to the second modification, and (b) is a diagram showing a high beam light distribution pattern.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side sectional view showing a vehicle lamp 10 according to one embodiment of the present invention. 2 is a view taken in the direction of arrow II in FIG. 1. FIG.

In these drawings, the direction indicated by X is the "front of the lamp", the direction indicated by Y is the "left direction" ("right direction" when viewed from the front of the lamp) orthogonal to the "front of the lamp", and the direction indicated by Z. is the "upward direction". The same applies to figures other than these.

The vehicle lamp 10 is a headlamp provided at the front end of a vehicle, and has a configuration in which a lamp unit 20 is accommodated in a lamp chamber formed by a lamp body 12 and a translucent cover 14 .

FIG. 3 is a cross-sectional view taken along line III--III in FIG.

As also shown in FIG. 3 , the lamp unit 20 is a so-called projector-type lamp unit, and includes a plurality of light emitting elements 30 , a reflector 32 and a projection lens 50 . The lamp unit 20 projects the direct light from the plurality of light emitting elements 30 and the light emitted from the plurality of light emitting elements 30 and reflected by the reflector 32 through the projection lens 50 toward the front of the lamp. A light distribution pattern for low beam is formed.

As shown in FIG. 3, the projection lens 50 is composed of a plano-convex aspherical lens having a convex curved front surface, and has an optical axis Ax extending in the longitudinal direction of the lamp. The projection lens 50 projects the light source image formed on the rear focal plane, which is the focal plane including the rear focal point F, as an inverted image onto a virtual vertical screen in front of the lamp (that is, in front of the vehicle). ing.

The projection lens 50 is supported at its outer peripheral portion by a lens holder 52 , and this lens holder 52 is supported by a heat sink 54 .

As shown in FIG. 2, the plurality of light emitting elements 30 are arranged side by side in the left-right direction above the optical axis Ax.

The plurality of light emitting elements 30 are composed of 11 white light emitting diodes each having a rectangular (specifically, square) light emitting surface 30a, and are arranged at small intervals from each other. At that time, the light emitting element 30 arranged directly above the optical axis Ax and the five light emitting elements 30 arranged on the right side thereof (the left side when viewed from the front of the lamp) are replaced by the remaining five light emitting elements 30 arranged on the left side. It is arranged in a state of being displaced downward with respect to.

A plurality of light emitting elements 30 are mounted on a substrate 56 , and this substrate 56 is supported by a heat sink 54 .

As shown in FIG. 3, the substrate 56 is arranged in a state tilted backward with respect to a vertical plane perpendicular to the optical axis Ax. At that time, the backward inclination angle of the substrate 56 with respect to the vertical plane is set to a value of 10 to 20 degrees (for example, about 15 degrees). As a result, the plurality of light emitting elements 30 are arranged with their light emitting surfaces 30a facing upward (ie, facing the projection lens 50) by 10 to 20 degrees (for example, about 15 degrees) with respect to the front direction of the lamp. ing.

The reflector 32 is arranged on the front side of the lamp with respect to the substrate 56 and supported by the heat sink 54 at both left and right ends thereof.

As shown in FIG. 2, the reflector 32 has a reflecting surface 32a formed so as to surround the plurality of light emitting elements 30. The light emitted from the plurality of light emitting elements 30 is projected onto the projection lens 50 on the reflecting surface 32a. configured to reflect toward At this time, the reflecting surface 32a has a horizontally elongated concave curved reflecting surface shape, and the upper edge thereof has a substantially horizontally elongated elliptical outer shape when viewed from the front of the lamp.

A reflecting surface 32a of the reflector 32 is formed with an opening 32b surrounding the plurality of light emitting elements 30 in the vicinity of the outer periphery thereof. The openings 32b are formed so as to extend along the arrangement of the plurality of light emitting elements 30 in a substantially laterally long rectangular shape with left and right steps.

Between the plurality of light emitting elements 30 and the projection lens 50, direct light from the plurality of light emitting elements 30 and part of the emitted light from the plurality of light emitting elements 30 reflected by the reflector 32 are shielded to provide low beam light distribution. A shade 60 is provided to form the cutoff line of the pattern.

The shade 60 is formed integrally with the lower region of the reflector 32 and its upper surface forms part of the reflecting surface 32a of the reflector 32. As shown in FIG.

A front edge 60a of the shade 60 is formed so as to extend in the left-right direction along a vertical plane perpendicular to the optical axis Ax at the position of the rear focal point F of the projection lens 50 in a staggered manner. Specifically, the front edge 60a extends in the horizontal direction at a position slightly above the optical axis Ax at the left side of the optical axis Ax (the right side when viewed from the front of the lamp). A portion on the right side of Ax extends horizontally at a position slightly below the optical axis Ax, and its left end portion extends obliquely in an upper left direction and is connected to a portion on the left side of the optical axis Ax. .

As shown in FIG. 3, the opening 32b of the reflector 32 is formed at a position slightly separated from the light emitting surfaces 30a of the plurality of light emitting elements 30 on the front side of the lamp. The rear end surface 32c of the reflector 32 extends parallel to the substrate 56 at a position slightly away from the light emitting surfaces 30a of the plurality of light emitting elements 30 toward the front of the lamp, but its lower region 32c1 extends from the plane parallel to the substrate 56. also extends obliquely downward toward the front side of the lamp.

Direct light emitted from the plurality of light emitting elements 30 to the rear side of the lamp from the shade 60 (that is, direct light emitted to the rear side of the lamp from the lower region 32c1 of the rear end surface 32c of the reflector 32) is located below the shade 60. A reflecting member 70 is arranged to reflect the light toward the projection lens 50 . The reflecting member 70 is composed of a plate-like member having a reflecting surface 70a extending obliquely downward toward the front side of the lamp. The reflecting member 70 is supported by the heat sink 54 at a plate-like bracket portion 70b that is bent downward from its rear end.

As shown in FIG. 2, the reflective member 70 is applied to a portion of the light emitting elements 30 (specifically, about seven light emitting elements 30) positioned near the optical axis Ax among the plurality of light emitting elements 30 when viewed from the front of the lamp. It is formed with corresponding left and right widths.

The reflecting surface 70a of the reflecting member 70 is composed of a plurality of small reflecting surfaces 70s arranged in the horizontal direction. Each of the small reflecting surfaces 70s is formed of a concave cylindrical surface extending obliquely downward toward the front side of the lamp. It's becoming

As shown in FIG. 3, the downward angle of the reflecting surface 70a is such that the reflected light from the plurality of small reflecting surfaces 70s passes through the rear focal plane of the projection lens 50 at a position spaced downward from the optical axis Ax. is set to

In FIG. 3, the optical paths of the direct light from the light emitting element 30 and the reflected light from its reflector 32 are indicated by thick solid lines, and the optical paths of the reflected light from the reflecting member 70 are indicated by thin solid lines.

4A shows a low-beam light distribution pattern PL formed on a virtual vertical screen positioned 25 m in front of the vehicle by light emitted forward from the lamp unit 20 of the vehicle lamp 10. FIG. It is a figure which shows perspectively.

As shown in FIG. 4A, the low-beam light distribution pattern PL is a left-handed low-beam light distribution pattern, and has cutoff lines CL1 and CL2 that are uneven on the left and right sides at the upper edge thereof. The cut-off lines CL1 and CL2 extend in the horizontal direction on the left and right sides of the line VV, which passes vertically through the vanishing point HV in the front direction of the lamp. The opposite lane side portion is formed as a lower cutoff line CL1, and the own lane side portion on the left side of the VV line is formed as an upper cutoff line CL2 rising from the lower cutoff line CL1 via an inclined portion. formed.

In the low-beam light distribution pattern PL, the elbow point E, which is the intersection of the lower cutoff line CL1 and the line VV, is positioned below HV by about 0.5 to 0.6°.

The low-beam light distribution pattern PL is formed as a light distribution pattern to which an OHS irradiation light distribution pattern PA for illuminating an overhead sign OHS installed above the road surface in front of the vehicle is added. The OHS irradiation light distribution pattern PA is formed as a horizontally elongated light distribution pattern that spreads in the left-right direction at a position away from the cutoff lines CL1 and CL2.

As described above, the low-beam light distribution pattern PL is formed by the direct light from the plurality of light emitting elements 30 and the reflected light from the reflector 32 thereof. It is formed as an inverted projection image of 60a.

In the OHS irradiation light distribution pattern PA, the direct light emitted from the plurality of light emitting elements 30 toward the rear side of the lamp from the shade 60 is reflected by the reflecting member 70 disposed below the light fixture, and then passes through the projection lens 50. The light is formed by emitting the light toward the front of the lamp through the light fixture.

At that time, when the direct light from the plurality of light emitting elements 30 is reflected by the plurality of small reflecting surfaces 70s constituting the reflecting surface 70a of the reflecting member 70, the light diffuses in the horizontal direction to some extent. The light pattern PA is formed with substantially uniform brightness.

On the other hand, FIG. 4B is a diagram showing a comparative example of the present embodiment, in which it is assumed that the lamp unit 20 does not include the reflecting member 70 and instead has a stepped portion formed on the rear surface of the projection lens 50. FIG. 10 is a diagram showing an OHS irradiation light distribution pattern PA′ formed in the case of the above configuration together with a low beam light distribution pattern PL′;

As shown in FIG. 4B, the low-beam light distribution pattern PL' is formed as a light distribution pattern substantially similar to the low-beam light distribution pattern PL. A dark portion D' is formed.

Such streak-shaped dark portions D' are formed because a stepped portion is formed on the rear surface of the projection lens 50 in order to form the light distribution pattern PA' for OHS irradiation, thereby forming a light distribution pattern for low beam. This is due to the fact that part of the illumination light that should have been lost is lost.

Next, the effect of this embodiment is demonstrated.

The lamp unit 20 of the vehicle lamp 10 according to the present embodiment is configured to form a low-beam light distribution pattern PL by irradiating the light emitted from the plurality of light emitting elements 30 through the projection lens 50 toward the front of the lamp. At that time, the plurality of light emitting elements 30 are arranged in a horizontal direction with the light emitting surface 30a facing the projection lens 50, and the plurality of light emitting elements 30 and the projection lens 50 are arranged. and a shade 60 for blocking part of the light emitted from the plurality of light emitting elements 30 in order to form the cutoff lines CL1 and CL2 of the low-beam light distribution pattern PL. A reflecting member 70 is disposed on the lower side of the reflective member 70 for reflecting the direct light emitted from at least one of the plurality of light emitting elements 30 to the rear side of the lamp from the shade 60 toward the projection lens 50 . Therefore, the following effects can be obtained.

That is, direct light emitted from at least one light emitting element 30 of the plurality of light emitting elements 30 to the rear side of the lamp with respect to the shade 60 is reflected by the reflecting member 70 , enters the projection lens 50 , and passes through the projection lens 50 . Since the light is emitted toward a space above the cutoff lines CL1 and CL2 of the low-beam light distribution pattern PL, the emitted light can form the OHS irradiation light distribution pattern PA.

In this case, the OHS irradiation light distribution pattern PA can be formed without affecting the configuration of the lamps for forming the low beam light distribution pattern PL. The light distribution pattern PA for OHS irradiation can be formed while maintaining the brightness and its uniformity.

As described above, according to the present embodiment, in the vehicle lamp 10 configured to irradiate the light emitted from the plurality of light emitting elements 30 toward the front of the lamp via the projection lens 50, the low beam light distribution pattern PL The light distribution pattern PA for OHS irradiation can be formed while maintaining the brightness and uniformity thereof.

At that time, the direct light emitted from each light emitting element 30 to the rear side of the lamp from the shade 60 is unintentionally reflected by other constituent members of the lamp (for example, the heat sink 54, etc.), becoming stray light and causing glare. However, by adopting the configuration of this embodiment, the occurrence of such stray light can be effectively suppressed.

Moreover, in this embodiment, the reflecting surface 70a of the reflecting member 70 is composed of a plurality of small reflecting surfaces 70s arranged in the left-right direction. The light distribution pattern PA for OHS irradiation can be formed with substantially uniform brightness because the light is reflected as light that emits light.

Further, in this embodiment, since the reflector 32 that reflects the light emitted from the plurality of light emitting elements 30 toward the projection lens 50 is provided, the brightness of the low beam light distribution pattern PL can be increased, and , the degree of freedom of the light distribution can be increased.

Furthermore, in this embodiment, the reflector 32 is integrally formed with the shade 60, so that the accuracy of light distribution control can be improved and the number of parts of the vehicle lamp 10 can be reduced.

It should be noted that the reflecting member 70 of the present embodiment can be formed so as to hide a connector (not shown) for connecting the plurality of light emitting elements 30 to a power supply. It is also possible to use a wiring pattern (not shown) or the like as a member for protecting it from sunlight.

In the above embodiment, the projection lens 50 is described as being composed of a plano-convex aspherical lens, but it is also possible to be composed of a biconvex lens, a convex meniscus lens, or the like. It is also possible to have a configuration having an outer shape of .

In the above embodiment, the lamp unit 20 has 11 light emitting elements 30, but it is also possible to have a configuration with a different number of light emitting elements 30. FIG.

In the above embodiment, the plurality of light emitting elements 30 are arranged in a staggered manner, but it is also possible to arrange them in a horizontal row.

In the above embodiment, the light emitting surface 30a of each of the plurality of light emitting elements 30 has been described as having a square outer shape. etc.).

In the above embodiment, the reflectors 32 are arranged in order to effectively utilize the light emitted from the plurality of light emitting elements 30, but it is also possible to adopt a configuration in which the reflectors 32 are not arranged.

Next, a modification of the above embodiment will be described.

First, a first modified example of the above embodiment will be described.

FIG. 5 is a view similar to FIG. 2 showing a lamp unit 120 of a vehicle lamp according to this modified example.

As shown in FIG. 5, the basic configuration of the lamp unit 120 is the same as that of the lamp unit 20 of the above embodiment, but the reflecting member 170 is integrally formed with the shade 60 in the above embodiment. is different from

That is, in this modification as well, the reflecting member 170 is arranged below the shade 60 , and reflects the direct light emitted from the plurality of light emitting elements 30 toward the rear side of the lamp from the shade 60 toward the projection lens 50 . However, it is connected to the lower surface of the shade 60 at bracket portions 170c formed on both left and right sides thereof.

The reflecting member 170 of this modified example also has a reflecting surface 170a composed of a plurality of small reflecting surfaces 170s arranged in the left-right direction, and the specific shape of the reflecting surface is the same as in the above embodiment.

It should be noted that the reflecting member 170 of this modified example does not have the bracket portion 70b that is formed in the reflecting member 70 of the above-described embodiment.

Even when the configuration of this modified example is employed, the same effects as those of the above-described embodiment can be obtained.

Moreover, in this modified example, since the reflecting member 170 is formed integrally with the shade 60, the accuracy of the light distribution control can be improved. It is possible to improve the accuracy of the positional relationship with the illumination light distribution pattern PA. Moreover, by adopting such a configuration, the number of parts of the lamp unit 120 can be reduced.

Next, the 2nd modification of the said embodiment is demonstrated.

6 and 7 are views similar to FIGS. 2 and 3, showing a lighting unit 220 of a vehicle lighting device according to this modified example.

As shown in FIG. 6, the basic configuration of the lamp unit 220 is the same as that of the lamp unit 20 of the above-described embodiment, but a plurality of second light emitting elements 240 are provided below the shade 260 for additional lighting during high beam irradiation. and a second reflector 242 for reflecting the light emitted from the plurality of second light emitting elements 240 toward the projection lens 50 are additionally arranged, and the reflecting member 270 is integrally formed with the second reflector 242. is different from the case of the above-described embodiment. Along with this, the configurations of the shade 260 and the substrate 256 are partially different from those of the above embodiment.

Each of the plurality of second light emitting elements 240 is composed of nine white light emitting diodes each having a rectangular light emitting surface 240a (specifically, a square having the same size as the light emitting surface 30a of the first light emitting element 30). , are arranged in a horizontal row with a small distance from each other.

The multiple second light emitting elements 240 are mounted on a common substrate 256 with the multiple light emitting elements 30 . The substrate 256 is supported by the heat sink 54 while being arranged at the same backward inclination angle as the substrate 56 of the above embodiment.

The second reflector 242 has a reflecting surface 242a formed to surround the plurality of second light emitting elements 240. The light emitted from the plurality of second light emitting elements 240 is directed to the projection lens 50 on this reflecting surface 242a. It is configured to be directed and reflected.

A reflective surface 242a of the second reflector 242 is formed with a laterally long opening 242b surrounding the plurality of second light emitting elements 240 in the vicinity of the outer periphery thereof. The opening 242b is formed to extend in a horizontally long rectangular shape along the arrangement of the plurality of second light emitting elements 240. As shown in FIG.

The shade 260 is integrally formed with the first and second reflectors 32,242. That is, the shade 260 is formed so that the connecting portion of the first and second reflectors 32 and 242 has a wedge-shaped vertical cross-section and extends forward to the front edge 260a of the lamp. It constitutes part of the reflecting surface 32 a and its lower surface constitutes part of the reflecting surface 242 a of the second reflector 242 .

The reflecting member 270 is formed by forming a through-hole 242c elongated in the left-right direction in a region above the opening 242b of the second reflector 242. As shown in FIG. That is, the reflecting surface 270a of the reflecting member 270 is formed by forming the lower surface of the through hole 242c so as to extend obliquely downward toward the front side of the lamp.

A reflecting surface 270a of the reflecting member 270 is composed of a plurality of small reflecting surfaces 270s arranged in the horizontal direction. Each small reflecting surface 270s is formed of a concave cylindrical surface extending obliquely downward toward the front side of the lamp. It's becoming

As shown in FIG. 7, the downward angle of the reflecting surface 270a is such that the reflected light from the plurality of small reflecting surfaces 270s passes through the rear focal plane of the projection lens 50 at a position spaced downward from the optical axis Ax. set to a value.

In FIG. 7, the thick solid line indicates the optical path of the direct light from the light emitting element 30 and the reflected light from the reflector 32, and the thin solid line indicates the optical path of the reflected light from the reflecting member 270. The optical paths of the direct light from the second light emitting element 240 and the reflected light from the second reflector 242 are indicated by dashed lines.

FIG. 8(a) is a diagram showing a low-beam light distribution pattern PL-2 formed on the virtual vertical screen by light emitted from the lamp unit 220 toward the front of the lamp, and FIG. 8(b). 2] is a view perspectively showing a high-beam light distribution pattern PH-2 formed on the virtual vertical screen by light emitted from the lamp unit 220 toward the front of the lamp. [FIG.

As shown in FIG. 8A, the low-beam light distribution pattern PL-2 is a light distribution pattern to which the OHS irradiation light distribution pattern PA-2 is added, similar to the low-beam light distribution pattern PL formed in the above embodiment. It is formed as a light pattern.

The low-beam light distribution pattern PL-2 itself is a light distribution pattern similar to the low-beam light distribution pattern PL. The OHS irradiation light distribution pattern PA-2 is also formed as a light distribution pattern substantially similar to the OHS irradiation light distribution pattern PA formed in the above embodiment.

As shown in FIG. 8B, the high-beam light distribution pattern PH-2 is formed as a synthetic light distribution pattern in which the additional light distribution pattern PB-2 is added to the low-beam light distribution pattern PL-2. there is

The additional light distribution pattern PB- 2 is formed by direct light from the plurality of second light emitting elements 240 and light emitted from the plurality of second light emitting elements 240 and reflected by the second reflector 242 .

Thus, the high-beam light distribution pattern PH-2 is formed as a continuous light distribution pattern in which the low-beam light distribution pattern PL-2 and the additional light distribution pattern PB-2 are integrated. At this time, the OHS irradiation light distribution pattern PA-2 is formed so as to be included in the additional light distribution pattern PB-2.

Even when the configuration of this modified example is employed, the same effects as those of the above-described embodiment can be obtained.

In this case, the lamp unit 220 of this modified example is configured to selectively form the low beam light distribution pattern PL-2 and the high beam light distribution pattern PH-2. Even in this case, it is possible to increase the accuracy of light distribution control and reduce the number of parts of the lamp unit 220 .

In the lamp unit 220 of this modified example, the plurality of second light emitting elements 240 are configured to light up all at once. . At that time, if each of the plurality of second light emitting elements 240 is turned on and off according to the driving situation of the own vehicle, the driving road ahead can be widened as much as possible without giving glare to the driver of the oncoming vehicle. It becomes possible to irradiate.

It should be noted that the numerical values shown as specifications in the above-described embodiment and its modification are merely examples, and it goes without saying that these values may be set to different values as appropriate.

Moreover, the present invention is not limited to the configurations described in the above embodiments and modifications thereof, and configurations with various other modifications can be adopted.

REFERENCE SIGNS LIST 10 vehicle lamp 12 lamp body 14 translucent cover 20, 120, 220 lamp unit 30 light emitting element 30a, 240a light emitting surface 32a, 242a reflecting surface 32 reflector 32b, 242b opening 32c rear end surface 32c1 lower region 50 projection lens 52 lens holder 54 heat sink 56, 256 substrate 60, 260 shade 60a, 260a front edge 70, 170, 270 reflective member 70a, 170a, 270a reflective surface 70b, 170c bracket portion 70s, 170s, 270s small reflective surface 240 second light emitting element 242 second second Reflector 242c Through hole Ax Optical axis CL1 Lower cutoff line CL2 Upper cutoff line E Elbow point F Back focus PA, PA-2 Light distribution pattern for OHS irradiation PB-2 Additional light distribution pattern PH-2 Light distribution pattern for high beam PL, PL-2 Light distribution pattern for low beam

Claims (5)

A vehicle comprising a plurality of light emitting elements and a projection lens, and configured to form a low beam light distribution pattern by irradiating light emitted from the plurality of light emitting elements toward the front of the lamp via the projection lens. In lighting fixtures,
The plurality of light emitting elements are arranged in a horizontal direction with the light emitting surface facing the projection lens,
A shade is arranged between the plurality of light emitting elements and the projection lens for blocking part of the light emitted from the plurality of light emitting elements in order to form a cutoff line of the light distribution pattern for low beam,
A reflecting member is arranged below the shade to reflect direct light emitted from at least one of the plurality of light emitting elements to the rear side of the lamp from the shade toward the projection lens. A vehicle lamp characterized by: 2. The vehicle lamp according to claim 1, wherein the reflecting member is configured to diffusely reflect the direct light from the plurality of light emitting elements in the horizontal direction. 3. The vehicle lamp according to claim 1, wherein the reflecting member is formed integrally with the shade. A reflector is provided for reflecting light emitted from the plurality of light emitting elements toward the projection lens,
4. The vehicle lamp according to claim 1, wherein the reflector is formed integrally with the shade. A plurality of second light emitting elements that are additionally lit when the high beam is irradiated and a second reflector that reflects the light emitted from the plurality of second light emitting elements toward the projection lens are arranged below the shade. cage,
5. The vehicle lamp according to claim 1, wherein the reflecting member is formed integrally with the second reflector.

Images