JP2019036402A - Vehicular lighting tool - Google Patents

Abstract

To provide a vehicular lighting tool having a headlight unit and a marker light unit arranged side by side, for improving its good appearance while enabling the formation of a marker light distribution pattern without increasing the weight of the whole lighting tool.SOLUTION: A projector type headlight unit 20 for radiating emitted light from a first light source 24 through a projection lens 22 to the front side is constructed with the projection lens 22 having a convex front face shape. On the other hand, a marker light unit 40A for radiating light from a second light source 44A through a translucent member 42A to the front side while reflecting it with a reflector 46A is constructed with the translucent member 42A having a convex front face shape and smaller refractive power than the projection lens 22. Thus, a design effect such as seeming arrangement of a plurality of projection lenses 22 side by side is developed, and in addition reflected light from the reflector 46A can be easily radiated at a diffusion angle appropriate to the marker light distribution pattern while the weight of the translucent member 42A is reduced.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicular lamp provided with a projector-type headlamp unit.

  Conventionally, a headlamp configured to form a light distribution pattern for a headlamp by irradiating light emitted from a light source disposed on the rear side of the projection lens forward through the projection lens. A vehicular lamp provided with a unit is known.

  “Patent Document 1” describes a vehicular lamp in which a marker lamp unit is arranged side by side with respect to such a projector-type headlamp unit.

JP 2014-56769 A

  In the vehicular lamp in which the headlamp unit and the marker lamp unit are arranged side by side, if the marker lamp unit can be seen with the same design as the headlamp unit, this enhances the appearance of the vehicle lamp. Can do.

  In order to realize this, it is conceivable that the marker lamp unit arranged side by side with the projector-type headlamp unit includes a projection lens similar to the projection lens of the headlamp unit.

  However, in such a configuration, it becomes difficult to form the light distribution pattern for the marker lamp due to the optical action of the projection lens, and the weight of the entire lamp becomes large. .

  The present invention has been made in view of such circumstances, and in a vehicular lamp in which a headlamp unit and a marker lamp unit are arranged side by side, for a marker lamp without increasing the weight of the entire lamp. An object of the present invention is to provide a vehicular lamp that can improve the appearance of a light distribution pattern.

  The present invention is configured to include a reflector and a translucent member as a marker lamp unit, and to devise the configuration of the translucent member to achieve the above object.

That is, the vehicular lamp according to the present invention is
In the vehicular lamp in which the headlamp unit and the marker lamp unit are arranged side by side,
The headlamp unit is configured to form a light distribution pattern for headlamps by irradiating light emitted from a first light source disposed on the rear side of the projection lens forward through the projection lens. Has been
The said marker lamp unit is comprised so that the light distribution pattern for marker lamps may be formed by reflecting the light from a 2nd light source with a reflector, and irradiating ahead through a translucent member,
The projection lens has a convex curved front shape,
The translucent member has a convex curved front surface and has a refractive power smaller than that of the projection lens.

  The above “vehicle lamp” has a configuration in which a headlamp unit and a marker lamp unit are arranged side by side, but in that case, the specific arrangement of both units is not particularly limited, for example, A configuration arranged side by side in the left-right direction, a configuration arranged side by side in the vertical direction, or the like can be employed.

  Each type of the “first light source” and the “second light source” is not particularly limited, and for example, a light emitting element such as a light emitting diode, a light source bulb, or the like can be adopted.

  The “headlight unit” may be configured such that the light emitted from the first light source directly enters the projection lens, or the light emitted from the first light source is reflected by the reflector and then incident on the projection lens. It may be the composition to make it.

  The above-mentioned “light distribution pattern for headlamps” means a light distribution pattern formed in terms of the function of the headlamp. For example, a low beam distribution pattern, a high beam distribution pattern, or the like can be adopted. .

  The above-mentioned “light distribution pattern for a sign lamp” means a light distribution pattern formed in the function of the sign lamp. For example, a light distribution pattern for a clearance lamp, a light distribution pattern for a front turn signal lamp, and a daytime running A light distribution pattern for a lamp can be used.

  The “projection lens” is not particularly limited as long as it has a convex curved front surface.

  The “translucent member” has a convex curved front surface shape, but the specific shape of the convex curved surface constituting the front surface shape is not particularly limited. The “translucent member” may be any of a biconvex lens, a plano-convex lens, a convex meniscus lens, a through lens, and a concave meniscus lens as long as it has a refractive power smaller than that of the projection lens.

  A vehicular lamp according to the present invention includes a headlamp unit that irradiates light emitted from a first light source disposed on the rear side of a projection lens through the projection lens and a light reflected from the second light source. The projection lamp of the headlamp unit has a convex curved front shape, and is arranged side by side with a marker lamp unit that is reflected by and radiates forward through a translucent member. On the other hand, since the translucent member of the marker lamp unit has a convex-curved front surface shape and a refractive power smaller than that of the projection lens, the following effects can be obtained.

  That is, the sign lamp unit has a design in which a plurality of projection lenses appear to be arranged side by side because the translucent member thereof has a convex curved front shape similar to the front shape of the projection lens. Thus, the appearance of the vehicular lamp can be enhanced.

  At that time, since the light transmitting member has a refractive power smaller than that of the projection lens of the headlamp unit, the reflected light from the reflector is used as a diffusion angle suitable for the light distribution pattern for the marker lamp. It is possible to easily irradiate with light, and the light-transmissive member can be reduced in weight.

  Thus, according to the present invention, in the vehicular lamp in which the headlamp unit and the marker lamp unit are arranged side by side, it is possible to form a marker lamp light distribution pattern without increasing the weight of the entire lamp. This can improve the appearance.

  In the above configuration, as the translucent member, the radius of curvature of the convex curved surface constituting the front surface shape is 0.8 to 1.2 times the radius of curvature of the convex curved surface constituting the front surface shape of the projection lens. With the set configuration, it is possible to sufficiently ensure the design effect that a plurality of projection lenses appear to be arranged side by side, thereby further enhancing the appearance of the vehicular lamp. .

  In the above configuration, the second light source has a configuration in which a plurality of light emitting elements are arranged in the vehicle width direction, and the reflector has a configuration in which a plurality of reflection surfaces are arranged in the vehicle width direction. The diffusion angle in the left-right direction of the reflected light from the reflector can be easily increased, and thereby, it is possible to easily obtain the diffuse irradiation light suitable for the light distribution pattern for the sign lamp.

  In that case, if it is set as the structure by which the several light emitting element was mounted in the same board | substrate, the positional accuracy of each light emitting element can be raised, and a lamp structure can be simplified.

  In the above configuration, if a lens element that deflects and emits the reflected light from the reflector to the side is formed on the outer peripheral edge of the front surface of the translucent member, the horizontal direction of the irradiation light from the marker lamp unit The maximum diffusion angle can be further increased, thereby making it easier to obtain diffused irradiation light suitable for the light distribution pattern for the sign lamp.

  In the above configuration, if a plurality of marker lamp units are arranged, it is possible to enhance the design effect that a large number of projection lenses appear to be arranged side by side. The shine can be further enhanced.

The front view which shows the vehicle lamp which concerns on one Embodiment of this invention II-II sectional view of FIG. III-III sectional view of FIG. IV-IV sectional view of FIG. It is a figure which shows the light distribution pattern formed with the irradiation light from the said vehicle lamp, Comprising: (a) is a figure which shows the light distribution pattern for headlamps, (b) is a figure which shows the light distribution pattern for sign lamps The same figure as FIG. 3 which shows the 1st modification of the said embodiment. The same figure as FIG. 3 which shows the 2nd modification of the said embodiment. The figure similar to FIG. 4 which shows the 3rd modification of the said embodiment. The same figure as FIG. 3 which shows the 4th modification of the said embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view showing a vehicular lamp 10 according to an embodiment of the present invention. 2 is a sectional view taken along the line II-II in FIG. 1, FIG. 3 is a sectional view taken along the line III-III in FIG. 1, and FIG. 4 is a sectional view taken along the line IV-IV in FIG.

  In these drawings, the direction indicated by X is “front” as a lamp (“front” as a vehicle), and the direction indicated by Y is “left” (“left direction” as a vehicle) orthogonal to “front”. However, it is “right direction” in the front view of the lamp, and the direction indicated by Z is “upward direction”. The same applies to other figures.

  As shown in FIG. 1, a vehicular lamp 10 according to the present embodiment is a lamp provided at the left front end portion of a vehicle, and is a through-hole attached to a lamp body 12 and a front end opening of the lamp body 12. The headlamp unit 20 and the two marker lamp units 40A and 40B are incorporated in a lamp chamber formed by the translucent cover 14 in a state of being arranged side by side in the vehicle width direction.

  In the lamp chamber, an extension panel 16 is disposed in the vicinity of the front of the headlamp unit 20 and the marker lamp units 40A and 40B so as to surround them. In the extension panel 16, circular openings 16a, 16b, and 16c of the same size are formed in portions that are located in front of the headlamp unit 20 and the marker lamp units 40A and 40B.

  First, the configuration of the headlamp unit 20 located at the right end (that is, the inner side in the vehicle width direction) will be described.

  The headlamp unit 20 is a lamp unit for selectively forming a low beam light distribution pattern and a high beam light distribution pattern as a headlamp light distribution pattern, and is configured as a so-called projector-type lamp unit. Has been.

  Specifically, as shown in FIG. 2, the headlamp unit 20 includes a projection lens 22, a first light source 24 arranged behind the rear focal point F of the projection lens 22, and the first light source 24. The light source 24 is configured to include a reflector 26 that reflects light emitted from the light source 24 toward the projection lens 22, and a shade 28 disposed between the first light source 24 and the projection lens 22.

  The projection lens 22 projects the light source image of the first light source 24 formed on the rear focal plane, which is the focal plane including the rear focal point F, as a reverse image on the virtual vertical screen in front of the lamp. Yes.

  The projection lens 22 is a colorless and transparent biconvex lens, and has a circular outer shape when viewed from the front of the lamp. The spherical convex curved surface constituting the front surface 22a of the projection lens 22 is formed with a smaller radius of curvature than the spherical convex curved surface constituting the rear surface 22b. The projection lens 22 is supported by the lens holder 32 at the outer peripheral flange portion 22 c, and the lens holder 32 is supported by the base member 34.

  The extension panel 16 is disposed in the vicinity of the front of the outer peripheral flange portion 22c of the projection lens 22, and the front surface 22a of the projection lens 22 is exposed at the circular opening 16a.

  The first light source 24 is a white light emitting diode and has a light emitting surface having a horizontally long rectangular shape. The first light source 24 is supported by the base member 34 in a state in which the light emitting surface is arranged upward on the optical axis Ax1.

  The reflector 26 is supported by the base member 34 at the lower end edge in a state where the reflector 26 is disposed so as to cover the first light source 24 from above. The reflecting surface 26a of the reflector 26 has a long axis that is coaxial with the optical axis Ax1 of the projection lens 22 and a substantially elliptical curved surface that has the light emission center of the first light source 24 as a first focal point. The eccentricity is set to gradually increase from the vertical cross section toward the horizontal cross section. As a result, the reflector 26 converges the light from the first light source 24 to a point located slightly forward of the rear focal point F in the vertical section and displaces the convergence position to the front side in the horizontal section. It is like that.

  The shade 28 has an upward reflecting surface 28a that reflects part of the light from the first light source 24 reflected by the reflector 26 and reflects the shielded light upward. The light reflected by the upward reflecting surface 28a is incident on the projection lens 22, and is emitted from the projection lens 22 as downward light.

  The upward reflecting surface 28a of the shade 28 is configured by a horizontal plane including the optical axis Ax1 in the left region located on the left side (right side in the front view of the lamp) with respect to the optical axis Ax1, and located on the right side with respect to the optical axis Ax1. The right region is configured by a horizontal plane that is one step lower than the left region through a short slope. The front edge of the upward reflecting surface 28a extends to the left and right sides so as to pass through the rear focal point F.

  The shade 28 is configured as a movable shade. That is, the shade 28 is configured to move in the vertical direction by driving the actuator 30, and thereby, a light shielding position (see FIG. 5) that blocks part of the light from the first light source 24 reflected by the reflector 26. A position indicated by a solid solid line) and a light shielding cancellation position (a position indicated by a two-dot chain line in the figure) for canceling the light shielding can be adopted. The actuator 30 is driven when a beam changeover switch (not shown) is operated.

  Next, the configuration of the two marker lamp units 40A and 40B will be described.

  The marker lamp unit 40A located in the center is a lamp unit for forming a clearance lamp light distribution pattern as a marker lamp light distribution pattern. In addition, the marker lamp unit 40B located at the left end (that is, the outside in the vehicle width direction) is a lamp unit for forming a front turn signal lamp light distribution pattern as a marker lamp light distribution pattern.

  These two marker lamp units 40A and 40B are both so-called rose-bola lamp units and have substantially the same configuration. First, a specific configuration of the marker lamp unit 40A will be described.

  As shown in FIGS. 1, 3, and 4, the marker lamp unit 40A includes three second light sources 44A, a reflector 46A that reflects light from the three second light sources 44A forward, and the reflector 46A. It is the structure provided with the translucent member 42A arrange | positioned ahead.

  Each of the three second light sources 44A is a white light emitting diode, and has a rectangular light emitting surface. These three second light sources 44A are arranged at equal intervals in the vehicle width direction, and are supported by a common substrate 48 with their light emitting surfaces facing downward. Each of the second light sources 44 </ b> A has a considerably low brightness when turned on compared to the first light source 24 of the headlamp unit 20.

  The reflector 46A is disposed below the three second light sources 44A, and has a rectangular reflecting surface shape having a size just enough to cover the translucent member 42A in the front view of the lamp.

  The reflector 46A has three reflecting surfaces 46Aa located below each of the three second light sources 44A. Each reflecting surface 46Aa has a configuration in which the reflecting element 46As is assigned to a plurality of vertically long rectangular segments that are divided into vertical and horizontal grids when the lamp is viewed from the front.

  The plurality of reflective elements 46As constituting each reflective surface 46Aa are focused on the light emission center of the second light source 44A located above the reflective surface 46Aa and centered on the axis extending in the front-rear direction through the light emission center. It is comprised by the concave curved surface which uses the rotation paraboloid which makes an axis | shaft as a reference plane. At this time, the paraboloid of the reference surface is formed with a small focal length in the segment located in the upper stage, and is formed so as to gradually become a larger focal length as it is displaced to the lower stage side. .

  As a result, in each reflecting surface 46Aa, each of the plurality of reflecting elements 46As diffuses and reflects light from each second light source 44A in the vertical direction and the horizontal direction with the front direction of the lamp as the center. . At that time, each reflection element 46As diffuses and reflects light from the second light source 44A more in the left-right direction than in the up-down direction.

  The translucent member 42A is a colorless and transparent member, and has the same outer shape as the projection lens 22 of the headlamp unit 20 in a front view of the lamp.

  The translucent member 42 </ b> A is configured as a convex meniscus lens whose front surface 42 </ b> Aa is formed in a convex curved surface shape, and has a refractive power smaller than that of the projection lens 22.

  At this time, the convex curved surface constituting the front surface 42Aa of the light transmitting member 42A has the same curved surface shape as the convex curved surface constituting the front surface 22a of the projection lens 22. Further, the concave curved surface constituting the rear surface 42Ab of the translucent member 42A has a curved surface shape obtained by inverting the convex curved surface constituting the rear surface 22b of the projection lens 22 back and forth.

  The translucent member 42A has an outer peripheral flange portion 42Ac similar to the outer peripheral flange portion 22c of the projection lens 22, and the outer peripheral flange portion 42Ac is supported by a support member (not shown).

  The extension panel 16 is disposed so as to be positioned near the front of the outer peripheral flange portion 42Ac of the translucent member 42A, and the front surface 42Aa of the translucent member 42A is exposed at the circular opening 16b.

  In the marker lamp unit 40A, since the translucent member 42A is formed in the shape of a convex meniscus lens, the light from each second light source 44A reflected by each reflecting surface 46Aa of the reflector 46A has a slight optical axis Ax2. The light is deflected and emitted in the direction toward the side.

  Next, the configuration of the marker lamp unit 40B located at the left end (that is, the outside in the vehicle width direction) will be described.

  As shown in FIG. 1, the marker lamp unit 40B, like the marker lamp unit 40A located at the center, reflects the three second light sources 44B and the light from the three second light sources 44B forward. The reflector 46B and a translucent member 42B arranged in front of the reflector 46B are provided.

  At this time, also in this marker lamp unit 40B, the convex curved surface constituting the front surface 42Ba of the translucent member 42B is the convex curved surface constituting the front surface 42Aa of the translucent member 42A and the convex curved surface constituting the front surface 22a of the projection lens 22. Have the same curved surface shape.

  However, since this marker lamp unit 40B forms a light distribution pattern for a front turn signal lamp, the configuration of the marker lamp unit 40A is different in that all of the three second light sources 44B are composed of amber light emitting diodes. Is different.

  These three second light sources 44B are supported by a common substrate 48, and this substrate 48 is formed by extending the substrate supporting the three second light sources 44A in the marker lamp unit 40A outward in the vehicle width direction. It has been made.

  FIG. 5 is a perspective view showing a light distribution pattern formed on a virtual vertical screen arranged at a position 25 m ahead of the lamp by light irradiated forward from the vehicular lamp 10.

  At this time, the light distribution pattern shown in FIG. 5A is a low-beam light distribution pattern PL and a high-beam light distribution pattern PH as a headlight light distribution pattern formed by irradiation light from the headlight unit 20. The light distribution pattern shown in FIG. 5B is a clearance lamp light distribution pattern PC as a marker lamp light distribution pattern formed by irradiation light from the marker lamp unit 40A.

  A low-beam light distribution pattern PL indicated by a solid line in FIG. 5A is a headlight light-distribution pattern formed when the shade 20 is in the light shielding position, and is a low-beam light distribution pattern of the left light distribution. Is formed.

  The low-beam light distribution pattern PL is formed as a horizontally long light distribution pattern that extends in the left-right direction around the VV line passing through HV (vanishing point in the front direction of the lamp) in the vertical direction. Are provided with cut-off lines CL1 and CL2 having different left and right steps. The cut-off lines CL1 and CL2 extend horizontally in the left and right steps with the VV line as a boundary, and the opposite lane side portion on the right side of the V-V line is formed as the lower cut-off line CL1. The own lane side portion on the left side of the −V line is formed as an upper cut-off line CL2 that rises from the lower cut-off line CL1 via an inclined portion.

  In this low beam distribution pattern PL, the elbow point E, which is the intersection of the lower cut-off line CL1 and the VV line, is located about 0.5 to 0.6 ° below HV.

  A high beam light distribution pattern PH indicated by a two-dot chain line in FIG. 5A is a headlight light distribution pattern formed when the shade 20 is at the light shielding release position, and is a low beam light distribution pattern PL. It is formed as a light distribution pattern having a shape that extends to the upper side of the cutoff lines CL1 and CL2.

  The clearance lamp light distribution pattern PC shown in FIG. 5B is formed as a horizontally long light distribution pattern that expands to some extent in the vertical direction around HV and greatly expands in the horizontal direction.

  In the present embodiment, a light distribution pattern for front turn signal lamps (not shown) is formed as the light distribution pattern for the marker lamps by the irradiation light from the marker lamp unit 40B. The light distribution pattern for the front turn signal lamp is formed as an amber color light distribution pattern having substantially the same spread as the light distribution pattern PC for the clearance lamp.

  Next, the effect of this embodiment is demonstrated.

  The vehicular lamp 10 according to this embodiment includes a headlamp unit 20 that irradiates light emitted from a first light source 24 disposed on the rear side of the projection lens 22 forward through the projection lens 22, and a second The headlamp unit has a configuration in which a marker lamp unit 40A that reflects light from the light source 44A by the reflector 46A and irradiates forward through the translucent member 42A is arranged side by side in the vehicle width direction. The 20 projection lenses 22 have a convex curved front shape, while the light transmitting member 42A of the marker lamp unit 40A has a convex curved front shape and a refractive power smaller than that of the projection lens 22. Therefore, the following operational effects can be obtained.

  That is, in the marker lamp unit 40A, the translucent member 42A has a convex front surface shape similar to the front surface shape of the projection lens 22, so that the plurality of projection lenses 22 are arranged in the vehicle width direction. It is possible to obtain an effect on the design that the vehicle lamp 10 looks like, and thereby improve the appearance of the vehicular lamp 10.

  At that time, since the translucent member 42A has a smaller refractive power than the projection lens 22 of the headlamp unit 20, the marker lamp unit 40A uses the reflected light from the reflector 46A as a light distribution pattern for the marker lamp. It is possible to easily irradiate at a diffusion angle suitable for the light transmission, and it is possible to reduce the weight of the translucent member 42A.

  As described above, according to the present embodiment, in the vehicular lamp 10 in which the headlamp unit 20 and the marker lamp unit 40A are arranged side by side, the light distribution pattern for the marker lamp is formed without increasing the weight of the entire lamp. It is possible to improve the appearance.

  Furthermore, in this embodiment, since the marker lamp unit 40B is arranged side by side with the marker lamp unit 40A, the design is such that three projection lenses 22 appear to be arranged side by side in the vehicle width direction. The above effect can be obtained, whereby the appearance of the vehicular lamp 10 can be further enhanced.

  In particular, in the present embodiment, the convex curved surface constituting the front surfaces 42Aa and 40Ba of the translucent members 42A and 42B in the marker lamp units 40A and 40B is the convex curved surface constituting the front surface 22a of the projection lens 22 in the headlamp unit 20. Since they have the same curved surface shape, it is possible to enhance the design effect that three projection lenses 22 appear to be arranged side by side in the vehicle width direction, whereby the appearance of the vehicular lamp 10 can be improved. Can be further increased.

  Moreover, in the present embodiment, the second light sources 44A and 44B of the respective marker lamp units 40A and 40B have a configuration in which three light emitting elements are arranged side by side in the vehicle width direction. Since the reflectors 46A and 46B of 40A and 40B have a configuration in which three reflecting surfaces 46Aa and 46Ba are arranged in the vehicle width direction, the diffusion angle in the left-right direction of the reflected light from the reflectors 46A and 46B Can be easily increased, thereby making it possible to easily obtain diffused irradiation light suitable for a light distribution pattern for a marker lamp.

  In that case, in the marker lamp unit 40A, since the three light emitting elements as the second light source 44A are mounted on the same substrate 48, the positional accuracy of each light emitting element can be increased, and the lamp structure is simplified. Can be In addition, in the present embodiment, since the three light emitting elements as the second light source 44B of the marker lamp unit 40B are also mounted on the substrate 48, the lamp configuration can be further simplified.

  Instead of doing this, it is possible to adopt a configuration in which a substrate is arranged for each of the marker lamp units 40A and 40B.

  In the above-described embodiment, the convex curved surface constituting the front surfaces 42Aa and 40Ba of the translucent members 42A and 42B in each of the marker lamp units 40A and 40B is the convex curved surface constituting the front surface 22a of the projection lens 22 in the headlamp unit 20. Although described as having the same curved surface shape, as the translucent members 42A and 42B, the curvature radius of the convex curved surface constituting the front surface shape thereof is changed to the curvature radius of the convex curved surface constituting the front surface shape of the projection lens 22. On the other hand, if the configuration is set to a value that is 0.8 to 1.2 times, it is possible to sufficiently ensure the design effect that three projection lenses 22 appear to be arranged side by side. is there.

  In the above embodiment, the convex curved surface constituting the front shape of each of the translucent members 42A and 42B and the convex curved surface constituting the front shape of the projection lens 22 are both described as being spherical. In the case of an aspherical surface, the radius of curvature may be compared using the minimum radius of curvature (usually the radius of curvature is minimized on the optical axes Ax1 and Ax2).

  In the above embodiment, the headlamp unit 20 has been described as configured to reflect the light emitted from the first light source 24 by the reflector 26 and enter the projection lens 22. It is also possible to adopt a configuration in which direct light from is incident on the projection lens 22.

  In the above embodiment, the description has been given on the assumption that the two marker lamp units 40A and 40B are arranged as the marker lamp unit. However, it is possible to adopt a configuration in which one or three or more marker lamp units are arranged. is there.

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

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

  FIG. 6 is a view similar to FIG. 3, showing a marker lamp unit 140A of a vehicle lamp according to this modification.

  As shown in the figure, the basic structure of the marker lamp unit 140A of this modification is the same as that of the above embodiment, but the structure of the translucent member 142A is partially different from that of the above embodiment. Yes.

  The translucent member 142A of this modification example has the same outer shape as the translucent member 42A of the above-described embodiment in the lamp front view, and has an outer peripheral flange portion 142Ac similar to the outer peripheral flange portion 42Ac. .

  On the other hand, the translucent member 142A of the present modified example has the same curved surface shape as the convex curved surface constituting the front surface 42Aa of the translucent member 42A of the above-described embodiment. The surface 142Ab is a concave curved surface having a constant thickness with respect to the front surface 142Aa. That is, the translucent member 42A of the above embodiment is formed in a convex meniscus lens shape, whereas the translucent member 142A of the present modification is formed in a through lens shape.

  In the marker lamp unit 140A, since the translucent member 142A is formed in a transparent lens shape, the light from each second light source 44A reflected by each reflective surface 46Aa of the reflector 46A passes through the translucent member 142A. It will pass through as it is and will be irradiated forward.

  Also in this modification, the marker lamp unit 140A has the same front shape as that of the projection lens 22 in the translucent member 142A, so that the plurality of projection lenses 22 are arranged side by side. The design effect of being visible can be obtained.

  At that time, since the translucent member 142A has a refractive power (refractive power zero) that is smaller than that of the projection lens 22 of the headlamp unit 20, the marker lamp unit 140A labels the reflected light from the reflector 46A. It is possible to easily irradiate at a diffusion angle suitable for the light distribution pattern for lamps.

  In addition, by adopting the configuration of this modification, it is possible to further reduce the weight of the translucent member 142A.

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

  FIG. 7 is a view similar to FIG. 3, showing a marker lamp unit 240A of a vehicular lamp according to this modification.

  As shown in the figure, the basic configuration of the marker lamp unit 240A of the present modification is the same as that of the above embodiment, but the configuration of the translucent member 242A is partially different from that of the above embodiment. Yes.

  The translucent member 242A of the present modification also has the same outer shape as the translucent member 42A of the above-described embodiment in the lamp front view, and has the outer peripheral flange portion 242Ac similar to the outer peripheral flange portion 42Ac. .

  On the other hand, the translucent member 242A of the present modified example has a convex curved surface constituting the front surface 242Aa thereof more than a convex curved surface (convex curved surface indicated by a two-dot chain line in the drawing) constituting the front surface 42Aa of the translucent member 42A of the above embodiment. The radius of curvature is set to a large value, and the rear surface 242Ab is a concave curved surface having a constant thickness with respect to the front surface 242Aa.

  At this time, the curvature radius R2 of the convex curved surface constituting the front surface 242Aa of the translucent member 242A is set to R2 = 1.R with respect to the curvature radius R0 of the convex curved surface constituting the front surface 42Aa of the translucent member 42A of the above embodiment. The value is set to about 1 × R0.

  Also in this modification, the marker lamp unit 240 </ b> A has a translucent member 242 </ b> A having a convexly curved front surface shape similar to the front surface shape of the projection lens 22, so that the plurality of projection lenses 22 are arranged side by side. The effect on the design of appearing to be can be acquired.

  At that time, the light transmitting member 242A of the marker lamp unit 240A has a refractive power (refractive power of zero) smaller than that of the projection lens 22 of the headlamp unit 20, so that the reflected light from the reflector 46A is labeled. It is possible to easily irradiate at a diffusion angle suitable for the light distribution pattern for lamps.

  In addition, by adopting the configuration of the present modification, it is possible to further reduce the weight of the light transmitting member 242A.

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

  FIG. 8 is a view similar to FIG. 4 showing a marker lamp unit 340A of a vehicle lamp according to this modification.

  As shown in the figure, the basic configuration of the marker lamp unit 340A of the present modification is the same as that of the above embodiment, but the configuration of the translucent member 342A is partially different from that of the above embodiment. Yes.

  The translucent member 342A of the present modified example has the same configuration as the translucent member 42A of the above embodiment, but a part of the reflected light from the reflector 46A is laterally disposed on the outer peripheral edge of the front surface 342Aa. This is different from the above-described embodiment in that a lens element 342As that deflects and emits light toward is formed.

  A plurality of lens elements 342As are formed on the left and right sides of the optical axis Ax2 at positions slightly apart from the outer peripheral flange portion 342Ac toward the optical axis Ax2 so as to extend in an arc shape around the optical axis Ax2.

  Each lens element 342As has a wedge-shaped horizontal cross-sectional shape, and its outer peripheral wall surface extends substantially parallel to the optical axis Ax2, and its inner peripheral wall surface extends obliquely in a direction away from the optical axis Ax2. It is formed as follows.

  In this modification, the lens element 342As formed on the left and right outer peripheral edges of the front surface 342Aa is reflected from the reflector 46A incident on the light transmitting member 342A at the left and right outer peripheral edges of the rear surface 342Ab of the light transmitting member 342A. In FIG. 1, after being totally reflected once or twice, the lens element 342As is deflected and emitted in a direction that forms a large angle with respect to the optical axis Ax2.

  By adopting the configuration of this modification, the maximum diffusion angle in the left-right direction of the irradiation light from the marker lamp unit 340A can be further increased, thereby obtaining diffuse irradiation light suitable for the marker lamp light distribution pattern. It becomes possible more easily.

  Next, the 4th modification of the said embodiment is demonstrated.

  FIG. 9 is a view similar to FIG. 3, showing a marker lamp unit 440A for a vehicular lamp according to this modification.

  As shown in the figure, the basic configuration of the marker lamp unit 440A of this modification is the same as that of the above embodiment, but the arrangement of the second light source 44A and the configuration of the reflector 446A and the translucent member 442A. Is partially different from the above embodiment.

  In the present modification, the second light source 44A is arranged in a state of being displaced downward from the case of the above embodiment. Specifically, the second light source 44A of the present modification is disposed at an intermediate height position between the optical axis Ax2 of the translucent member 442A and the outer peripheral flange portion 442Ac immediately above it.

  Similarly to the reflector 46A of the above-described embodiment, the reflector 446A of the present modification is also disposed below the second light source 44A. However, the plurality of reflecting elements 446As constituting the reflecting surface 446Aa are formed in three upper and lower stages. Yes.

  As in the case of the above-described embodiment, the plurality of reflecting elements 446As have a paraboloid of revolution whose center axis is an axis extending in the front-rear direction so as to focus on the light emission center of the second light source 44A and pass through the light emission center. It is composed of a concave curved surface as a reference surface, and its rotational paraboloid is formed with a small focal length in the segment located in the upper stage, and gradually becomes a larger focal length as it is displaced to the lower stage side. Is formed.

  However, the reflecting surface 446Aa of the present modification directs the emitted light from the second light source 44A toward the upper region of the translucent member 442A between the reflecting element 446As located in the lower stage and the reflecting element 446As located in the middle stage. An upward reflecting element 446As1 that reflects obliquely upward is formed.

  The translucent member 442A of the present modification has the same configuration as the translucent member 42A of the above embodiment, but the reflected light from the upward reflecting element 446As1 is transmitted to the outer peripheral edge portion of the rear surface 442Ab on the optical axis Ax2. This is different from the above-described embodiment in that a lens element 442As that is deflected and incident in a direction toward the side is formed.

  A plurality of lens elements 442As are formed so as to extend in the horizontal direction at a position slightly apart downward from a portion of the outer peripheral flange portion 442Ac located immediately above the optical axis Ax2.

  Each lens element 442As has a wedge-like vertical cross-sectional shape, and is formed such that its lower wall surface extends in a substantially horizontal direction and its upper wall surface extends obliquely downward and rearwardly.

  In this modification, the reflected light from the upward reflecting element 446As1 that has reached the upper region of the rear surface 442Ab of the transparent member 442A is deflected and incident on the transparent member 442A from the lens element 442As toward the optical axis Ax2. The light is emitted from the front surface 442Aa as light traveling in a direction substantially along a horizontal plane.

  By adopting the configuration of this modification, the following operational effects can be obtained.

  That is, since the reflector 446A of this modification is arranged so as to be positioned in the substantially lower half portion of the translucent member 442A, the reflected light from the reflector 446A does not reach the upper region of the translucent member 442A. If this is the case, the forward irradiation light from the upper region of the translucent member 442A cannot be obtained.

  However, in this modification, the reflected light from the upward reflecting element 446As1 formed on the reflecting surface 446Aa of the reflector 446A reaches the upper region of the translucent member 442A, is deflected and incident from the lens element 442As, and from the front surface 442Aa. Since it is emitted as light traveling in a direction along a substantially horizontal plane, it is possible to make substantially the entire region of the translucent member 442A appear to emit light.

  Further, since the plurality of lens elements 442As are formed in the upper region of the rear surface 442Ab of the light transmitting member 442A, the second light source 44A and the substrate 48 disposed behind the upper region of the light transmitting member 442A can be used as the light transmitting member. It can be made difficult to see from the front side of 442A, and thereby it is possible to prevent the appearance of the marker lamp unit 440A from being impaired.

  In addition, the numerical value shown as a specification in the said embodiment and its modification is only an example, and of course, you may set these to a different value suitably.

  The invention of the present application is not limited to the configuration described in the above-described embodiment and its modifications, and a configuration with various other changes can be adopted.

DESCRIPTION OF SYMBOLS 10 Vehicle lamp 12 Lamp body 14 Light transmission cover 16 Extension panel 16a, 16b, 16c Circular opening 20 Headlamp unit 22 Projection lens 22a, 42Aa, 42Ba, 142Aa, 242Aa, 342Aa Front 22b, 42Ab, 142Ab, 242Ab, 342Ab, 442Ab Rear surface 22c, 42Ac, 142Ac, 242Ac, 342Ac, 442Ac Outer peripheral flange 24 First light source 26, 46A, 46B, 446A Reflector 26a, 46Aa, 446Aa Reflective surface 28 Shade 28a Upward reflective surface 30 Actuator base 32 Lens holder 34 Member 40A, 40B, 140A, 240A, 340A, 440A Marking light unit 42A, 42B, 142A, 242A, 342A, 442A Translucent member 44A, 44B Second light source 46As, 446As Reflective element 48 Substrate 342As, 442As Lens element 446As1 Upward reflective element Ax1, Ax2 Optical axis CL1 Lower cut-off line CL2 Upper cut-off line E Elbow point F Rear focus PC Light distribution pattern for clearance lamp ( Light distribution pattern for beacon lights)
PH High beam light distribution pattern (light distribution pattern for headlamps)
PL Light distribution pattern for low beams (light distribution pattern for headlamps)
R0, R2 radius of curvature

Claims (6)

In the vehicular lamp in which the headlamp unit and the marker lamp unit are arranged side by side,
The headlamp unit is configured to form a light distribution pattern for headlamps by irradiating light emitted from a first light source disposed on the rear side of the projection lens forward through the projection lens. Has been
The said marker lamp unit is comprised so that the light distribution pattern for marker lamps may be formed by reflecting the light from a 2nd light source with a reflector, and irradiating ahead through a translucent member,
The projection lens has a convex curved front shape,
The vehicular lamp, wherein the translucent member has a convex curved front surface and has a smaller refractive power than the projection lens.   In the translucent member, the radius of curvature of the convex curved surface constituting the front shape of the translucent member is 0.8 to 1.2 times the radius of curvature of the convex curved surface constituting the front shape of the projection lens. The vehicular lamp according to claim 1, wherein the vehicular lamp is set to a value. The second light source has a configuration in which a plurality of light emitting elements are arranged in the vehicle width direction,
The vehicular lamp according to claim 1, wherein the reflector has a configuration in which a plurality of reflecting surfaces are arranged side by side in the vehicle width direction.   4. The vehicular lamp according to claim 3, wherein the plurality of light emitting elements are mounted on the same substrate.   The vehicle according to any one of claims 1 to 4, wherein a lens element that deflects and emits the reflected light from the reflector to the side is formed on an outer peripheral edge of the front surface of the translucent member. Lamps.   The vehicular lamp according to claim 1, wherein a plurality of the marker lamp units are arranged.

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