JP2018073775A - Vehicular lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular lamp capable of making a dark part inconspicuous in an OHS light distribution pattern.SOLUTION: A vehicular lamp 10 includes: a projection lens 15 configured to project light from a light source 11; a reflector member 13 configured to reflect light from the light source 11 toward the projection lens 15; a shade 32 configured to shade part of light emitted from the light source 11; a reflection surface 27 for first overhead sign configured to reflect light from the light source 11 toward the shade 32 side; and a reflection surface 28 for second overhead sign configured to reflect light reflected on the reflection surface for first overhead sign toward the projection lens 15 in order to emit the light upward from the projection lens 15. The reflection surface 28 for second overhead sign has a light quantity adjustment unit 29 configured to partially reduce reflection light quantity to the projection lens 15, and the reflection surface 28 for second overhead sign is characterized in that a ratio of diffusion reflection to regular reflection is higher than that of the reflector member 13.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicular lamp from which an overhead sign light distribution pattern (hereinafter also referred to as an OHS light distribution pattern) is obtained.

  As a vehicular lamp, one that forms an OHS light distribution pattern for irradiating an overhead sign (an overhead sign) is known.

  Such a vehicular lamp is provided with an overhead sign reflection surface (hereinafter also referred to as an OHS reflection surface) on the shade, and reflects light not used in a normal light distribution pattern by the OHS reflection surface to form an OHS light distribution pattern. What is formed is considered (see, for example, Patent Document 1). The conventional vehicular lamp can form the OHS light distribution pattern by projecting the light reflected by the OHS reflecting surface toward the upper front side through the projection lens, thereby improving the visibility of the overhead sign.

Japanese Patent No. 4669434

  Here, the above-described conventional vehicular lamp has an OHS light distribution pattern by providing a portion that partially reduces reflection on the projection lens on the OHS reflecting surface in consideration of prevention of dazzling of an oncoming vehicle and the like, and regulations. A dark part with low illuminance is formed inside. However, the vehicular lamp forms a dark part with a sharp outline in the OHS light distribution pattern, and the dark part is conspicuous, giving the passenger a sense of incongruity.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a vehicular lamp that can make a dark portion inconspicuous in an OHS light distribution pattern.

  The vehicular lamp of the present invention includes a projection lens that projects light emitted from a light source forward, a reflector member that reflects the light emitted from the light source to the projection lens, and one of the light emitted from the light source. A shade that cuts off a portion to form a cut-off line of a light distribution pattern, a reflection surface for a first overhead sign that reflects light from the light source from the upper side toward the shade side, and a projection lens side of the shade. A second overhead sign reflecting surface that is formed on a surface and reflects the light reflected by the first overhead sign reflecting surface toward the projection lens so as to be emitted upward from the projection lens, and The reflecting surface for the second overhead sign has a light amount adjusting unit that partially reduces the amount of light reflected to the projection lens, and the second overhead sign. Reflection characteristics of Dosain reflecting surface is characterized in that the ratio of the diffuse reflection with respect to the specular reflection is higher than the reflector member.

  According to the vehicular lamp of the present invention, dark portions can be made inconspicuous in the OHS light distribution pattern.

It is a typical perspective view which decomposes | disassembles and shows each structure of the vehicle lamp 10 as an example which concerns on one Embodiment of the vehicle lamp which concerns on this invention. It is explanatory drawing which shows the structure of the vehicle lamp 10 in a schematic cross section. FIG. 2 is a schematic perspective view showing each configuration of a shade 32 of the shade unit 14 of the vehicular lamp 10 in an exploded manner. It is explanatory drawing which shows the cross section which looked at the shade 32 in the width direction, and is equivalent to the cross section which follows the II line | wire of FIG. It is explanatory drawing which shows a mode that the shade unit 14 was seen from the front. It is explanatory drawing which shows the high beam light distribution pattern HP. It is explanatory drawing which shows the low beam light distribution pattern LP and the OHS light distribution pattern OHP. It is explanatory drawing which shows the low beam light distribution pattern LPt and OHS light distribution pattern OHPt which are formed by the conventional structure.

  Hereinafter, a first embodiment of a vehicular lamp 10 as an example of a vehicular lamp according to the present invention will be described with reference to the drawings. 1 shows the front side of the yoke 52 open for easy understanding of the configuration of the solenoid 33, and FIG. 2 shows each configuration in a simple manner for easy understanding of the configuration of the vehicular lamp 10. The lens holder 16 is omitted while showing a cross section, and FIG. 4 shows each configuration in a simple cross section in order to facilitate understanding of the configuration and operation of the shade unit 14. FIGS. 2 and 4 show one bearing piece 44 having a second positioning piece 47 at the rotation base 41 of the shade 32.

  A vehicle lamp 10 of Example 1 according to an embodiment of a vehicle lamp according to the present invention will be described with reference to FIGS. 1 to 8. The vehicular lamp 10 according to the first embodiment is used to configure a headlamp for a vehicle such as an automobile. The headlamps are respectively mounted on the left and right sides of the front portion of the vehicle, and the vehicle lamp 10 is provided in a lamp chamber formed by a lamp housing whose opened front end is covered with an outer lens. The vehicular lamp 10 is provided in the lamp chamber via an up / down direction optical axis adjustment mechanism or a left / right direction optical axis adjustment mechanism, and appropriately illuminates the front of the vehicle.

  As shown in FIGS. 1 and 2, the vehicular lamp 10 according to the first embodiment includes a light source 11, a heat sink member 12, a reflector member 13, a shade unit 14, a projection lens 15, a lens holder 16, and a cooling fan unit 17. A projector type headlamp unit is configured. In the first embodiment, the vehicular lamp 10 uses the shade unit 14 so that the high beam light distribution pattern HP (running light distribution pattern (see FIG. 6)) and the low beam light distribution pattern LP (passing light distribution pattern (see FIG. 7) are used. )) And can be switched. In the following description, in the vehicular lamp 10, the direction along the optical axis of the reflector member 13 and the projection lens 15 described later is the optical axis direction (the projection lens 15 side is the front side), and the vehicle lamp 10 is mounted on the vehicle. The vertical direction is the vertical direction, and the direction perpendicular to the optical axis direction and the vertical direction is the width direction.

  The light source 11 is configured by mounting a light emitting element 11b which is a light emitting diode on a substrate 11a. The substrate 11 a is disposed on the base portion 21 of the upper surface 12 a of the heat sink member 12, and a power supply holder 22 is attached from above. The terminals of the substrate 11 a are connected to terminals provided on the power supply holder 22 and fixed to the upper surface 12 a. Is done. As a result, the light source 11 is appropriately lighted by supplying power from the lighting control circuit to the light emitting element 11b via the power supply holder 22.

  The heat sink member 12 is a heat radiating member that releases heat generated by the light source 11 provided on the upper surface 12a to the outside, and radiates heat from a plurality of heat radiating fins 23 provided on the lower surface. The heat sink member 12 is provided with two sets of screw holes 12b and guide projections 12c on the upper surface 12a (only the rear side is shown in FIG. 1), four mounting portions 24 projecting forward on the front surface, and a pair of fixed surface portions. 25 and a pair of fixed protrusions 26 protruding forward. Each mounting portion 24 and each fixing projection 26 have a screw hole 24a and a screw hole 26a. Each fixed surface portion 25 has a guide protrusion 25a and a screw hole 25b that protrude forward. The heat sink member 12 is fixed to the lamp housing through each mounting portion 24 (its screw hole 24a).

  The reflector member 13 reflects the light emitted from the light source 11 to the projection lens 15 side on the reflection surface. In the reflector member 13, the guide protrusion 12c on the upper surface 12a of the heat sink member 12 is inserted into the guide hole 13a provided on the periphery, and the screw member that has passed through the screw hole 13b is screwed into the screw hole 12b on the upper surface 12a. The heat sink member 12 (upper surface 12a) is positioned and fixed.

  As shown in FIG. 2, the reflector member 13 has a first overhead sign reflecting surface 27 (hereinafter also referred to as a first OHS reflecting surface 27) provided continuously at the upper portion. The first OHS reflecting surface 27 reflects the light emitted from the light source 11 toward the shade 32 (the second OHS reflecting surface 28 described later) side from the upper side, and the light source 11 (its central position). Is a free-form surface based on an ellipse having the second focal point in the vicinity of the second OHS reflecting surface 28 (the center thereof). The first OHS reflecting surface 27 is integrally formed with the reflector member 13, thereby preventing an increase in the number of parts.

  As shown in FIGS. 1 and 2, the projection lens 15 projects the light reflected by the reflector member 13 (the reflection surface thereof) and the first OHS reflection surface 27 to the front of the vehicle, and cooperates with them to arrange the low beam. A light pattern LP, a high beam light distribution pattern HP, and an OHS light distribution pattern OHP (see FIG. 7) described later are formed. The projection lens 15 is positioned with respect to the light source 11 and the reflector member 13 by being supported by the lens holder 16. The lens holder 16 is paired in the width direction (only the front side is shown), and has a guide hole 16a and a screw hole 16b arranged in the vertical direction, and a screw hole 16c above the guide hole 16a.

  The shade unit 14 switches the light distribution of the projection light projected by the projection lens 15 between the low beam light distribution pattern LP and the high beam light distribution pattern HP. The shade unit 14 includes a bracket plate 31, a shade 32 that is displaced for switching, a solenoid 33 that serves as a drive unit that operates to displace the bracket plate 31, a link mechanism 34 that transmits the operation to the shade 32, Is provided. The bracket plate 31 is formed by appropriately bending a plate-like member, a bearing portion 35 is provided at the upper edge portions of the left and right ends, and a connection opening 36 is provided at the center left side (front side when viewed from the front in FIG. 1). . Each of the bearing portions 35 is formed by appropriately cutting and bending the upper edge portion of the bracket plate 31 and supports the rotating shaft 37 in a rotatable manner. In addition, the bracket plate 31 is provided with a guide hole 31a and a screw hole 31b which are paired vertically at both left and right ends.

  The shade 32 blocks a part of the light emitted from the light source 11 and forms a cut-off line of the low beam light distribution pattern LP. The shade 32 is provided on the bracket plate 31 so as to be rotatable about a rotation shaft 37. As shown in FIG. 3, the shade 32 is configured by attaching a thin plate-like first shade portion 42 and a second shade portion 43 to a plate-like rotation base 41 in the first embodiment.

  The rotation base 41 is provided with a pair of bearing pieces 44 on both sides, and a rotation shaft 37 (see FIG. 4 etc.) is inserted into a shaft hole 44a formed in each. One end of the rotating shaft 37 is attached to the receiving portion of the bracket plate 31, and the other end is passed through a small hole 41 a (see FIG. 3, etc.) of the rotating base 41 of the shade 32. 5) is provided. The torsion coil spring 45 applies a rotational force in a direction in which the first shade portion 42 and the second shade portion 43 approach the projection lens 15 to the rotation base portion 41 that is rotatable with respect to the bracket plate 31.

  The rotation base 41 includes a pair of first positioning pieces 46, second positioning pieces 47, a transmission piece 48, and an opening 49. The first positioning pieces 46 are provided in pairs on the left and right below each bearing piece 44 (see FIG. 4 for the back side). The second positioning piece 47 is provided above the bearing piece 44 on one side (the front side when FIG. 3 is viewed from the front). The transmission piece 48 is formed by bending a portion where the center of the rotation base 41 in the width direction is cut out in a U shape. The opening 49 is formed at a position where the transmission piece 48 before being bent exists. The transmission piece 48 may be formed by bending the other cut-out side, or may be formed by bending the rotation base 41 without cutting out, and provided separately from the rotation base 41. However, the present invention is not limited to the configuration of the first embodiment. The transmission piece 48 has a transmission hole 48a, and is positioned closer to the projection lens 15 than the shaft hole 44a of both bearing pieces 44, as shown in FIG. The transmission piece 48 is provided in the center of the rotation base 41 (shade 32) in the width direction, and efficiently transmits the operation of the solenoid 33 via the link mechanism 34 (its later-described torsion coil spring 54) to the rotation base 41. When the transmission piece 48 is displaced downward, the rotation base 41 is raised (approaching in the vertical direction) (see a solid line), and when it is displaced upward, the rotation base 41 is laid down (approaching a horizontal state). (See broken line).

  As shown in FIG. 3, the first shade portion 42 is attached to the upper portion of the rotation base 41. The second shade portion 43 is attached to the first shade portion 42 in parallel with the first shade portion 42 at a predetermined interval. The first shade portion 42 and the second shade portion 43 have a shape in which two horizontal edges having different heights are joined by inclined edges so that the upper edges thereof form a cut-off line. In the first embodiment, the first shade portion 42 has a flat thin plate shape, and the second shade portion 43 has a predetermined shape between the first shade portion 42 to be attached by appropriately bending a flat thin plate member. An interval is provided. In the first embodiment, the first shade portion 42 and the second shade portion 43 are metal plates formed from a metal material, and have good wear resistance and corrosion resistance. When the shade 32 is in the rotation posture in which the rotation base 41 is raised, the upper edges (each edge) of the first shade portion 42 and the second shade portion 43 are located at or near the focal positions of the reflector member 13 and the projection lens 15. Are arranged as follows.

  In the first shade portion 42, the projection lens 15 side (front side) surface is a second overhead sign reflection surface 28 (hereinafter also referred to as a second OHS reflection surface 28). The second OHS reflecting surface 28 reflects the light reflected by the first OHS reflecting surface 27 toward the projection lens 15 so as to be emitted upward from the projection lens 15, and the center position is the second of the first OHS reflecting surface 27. It is substantially coincident with the focal point and the focal position of the projection lens 15. For this reason, the second OHS reflecting surface 28 reflects the light reflected by the first OHS reflecting surface 27 to the projection lens 15, and emits it as substantially parallel light that irradiates the upper side from the projection lens 15. An OHS light distribution pattern OHP (see FIG. 7) as an image of the surface 28 is formed. The second OHS reflecting surface 28 has a reflection characteristic having a higher ratio of diffuse reflection to regular reflection (lower glossiness) than the reflector member 13. In Example 1, the reflection characteristic has a larger proportion of diffuse reflection than regular reflection. It is said. In the first embodiment, the second OHS reflecting surface 28 satisfies the above-described reflection characteristics by forming the first shade portion 42 with a metal plate whose glossiness is adjusted.

  Further, the second OHS reflecting surface 28 has a light amount adjusting unit 29 as shown in FIGS. 3 and 5. The light amount adjusting unit 29 has a second concave portion of the second OHS reflecting surface 28, a through hole in the second OHS reflecting surface 28, or a lower reflection than the position of the second OHS reflecting surface 28 excluding the light amount adjusting unit 29. Formed as a rate. The light amount adjusting unit 29 does not reflect the light incident on itself or reflects the light with a reflectance lower than that of the second OHS reflecting surface 28, so that the light does not travel to the projection lens 15, and the second OHS reflecting surface. A dark portion Ds with low illuminance is formed in the OHS light distribution pattern OHP as an image of 28 (see FIG. 7 and the like). In the first embodiment, two light amount adjusting portions 29 are formed by partially denting two portions of the second OHS reflecting surface 28. In the OHS light distribution pattern OHP, one of the two light quantity adjustment units 29 forms a dark part Ds at a position where the face of an oncoming vehicle occupant is present, and the other is for ensuring safety in the event of an AFS (Adaptive Front Lighting System) failure. A dark part Ds is formed at a position where the face of the occupant of the oncoming vehicle exists when the irradiation direction is fixed. Since the position on the second OHS reflecting surface 28 is reflected on the position of the dark part Ds in the OHS light distribution pattern OHP, the light amount adjusting unit 29 may be set appropriately according to the position where the dark part Ds is to be formed. .

  As shown in FIG. 1 and the like, the solenoid 33 includes a coil 51, a yoke 52 incorporating the coil 51, and a plunger 53 that moves forward and backward from the coil 51. The yoke 52 is disposed on the front surface of the bracket plate 31 (on the projection lens 15 side). ) And is configured to be crimped. The plunger 53 is formed with a transmission groove 53 a at the tip, and is advanced and retracted by energization / non-energization of the coil 51.

  As shown in FIG. 5, the link mechanism 34 has a torsion coil spring 54 provided on the rear surface of the bracket plate 31. One end 54a is fitted into the transmission groove 53a of the plunger 53 of the solenoid 33 through the connection opening 36 of the bracket plate 31, and the other end 54b is fitted into the transmission hole 48a of the transmission piece 48 of the shade 32 (see FIG. 4 and the like). ). The torsion coil spring 54 is set to have a spring constant larger than the spring constant of the torsion coil spring 45 that applies a rotational force to the shade 32.

  In the shade unit 14, the guide projections 25 a of the both fixed surface portions 25 of the heat sink member 12 are passed through the guide holes 31 a of the bracket plate 31, and the bracket plate 31 is addressed to the heat sink member 12. Both guide protrusions 25a are passed through corresponding guide holes 16a of the lens holder 16 that supports the projection lens 15. Then, a screw member that passes through each screw hole 16b of the lens holder 16 and each screw hole 31b of the bracket plate 31 is screwed into a screw hole 25b of each fixing surface portion 25 of the heat sink member 12, and the screw of the lens holder 16 is screwed. The screw member that has passed through the use hole 16 c is screwed into each screw hole 26 a of the heat sink member 12. Thereby, the vehicular lamp 10 is assembled in a state where the positional relationship among the projection lens 15, the shade unit 14, the reflector member 13, and the light source 11 is determined.

  As shown in FIG. 1, the cooling fan unit 17 is configured by rotatably providing a cooling fan 56 connected to a motor in a rectangular parallelepiped frame 55, and is attached below the heat radiation fins 23 of the heat sink member 12. . When the light source 11 emits light, the cooling fan unit 17 drives the motor to rotate the cooling fan 56 and cools the radiating fins 23 of the heat sink member 12, thereby preventing problems due to heat generated by the light source 11. .

  Next, the light distribution pattern switching operation in the vehicular lamp 10 will be described. In the vehicular lamp 10, when the coil 51 of the solenoid 33 is not energized, as shown by a solid line in FIG. 4, the shade 32 is generated by the rotational force from the torsion coil spring 45, and both the first positioning pieces 46 are connected to the bracket plate 31. It hits. As a result, the shade 32 has a rotational posture in which the first shade portion 42 and the second shade portion 43 block a part of the light reaching the projection lens 15, that is, a low beam position. At this time, the transmission piece 48 of the rotation base 41 is displaced downward, and the plunger 53 of the solenoid 33 is advanced via the link mechanism 34 (see FIG. 5).

  In the vehicular lamp 10, when the coil 51 of the solenoid 33 is energized, the plunger 53 is retracted against the rotational force of the torsion coil spring 45 (see arrow A1 in FIG. 5), and is fixed to the transmission groove 53a at the tip thereof. Displacement of the one end 54a causes the torsion coil spring 54 of the link mechanism 34 to rotate clockwise (see arrow A2 in FIG. 5). Then, as shown by a chain line in FIG. 4, the shade 32 is laid down by pushing up the transmission piece 48 to which the other end 54 b of the torsion coil spring 54 is fixed, and the second positioning piece 47 hits the bracket plate 31. Then, the shade 32 is in a rotation posture in which the first shade portion 42 and the second shade portion 43 do not block the light reaching the projection lens 15, that is, a high beam position.

  The vehicular lamp 10 reflects light emitted from the light source 11 with power supplied thereto by the reflector member 13 and projects forward by the projection lens 15 (see FIG. 2). Then, the vehicular lamp 10 forms a high beam distribution pattern HP with projection light projected forward as shown in FIG. 6 when the shade 32 is set to a high beam position indicated by a chain line in FIG. 4 by the shade unit 14. Further, when the shade unit 14 causes the shade 32 to be a low beam position indicated by a solid line in FIG. 4, the vehicular lamp 10 generates a low beam light distribution pattern LP having a cut-off line with projection light projected forward as shown in FIG. Form. At this time, since the vehicular lamp 10 forms a cut-off line with the first shade part 42 and the second shade part 43 arranged in parallel at a predetermined interval, generation of color on the cut-off line can be suppressed. The vicinity of the cut-off line can be blurred.

  Then, as shown in FIG. 2, when the vehicle lamp 10 forms the low beam light distribution pattern LP, a part of the light emitted from the light source 11 and not used is reflected by the first OHS reflecting surface 27. The light travels toward the second OHS reflecting surface 28 and is emitted as substantially parallel light that is reflected by the second OHS reflecting surface 28 and irradiates the upper side from the projection lens 15. As a result, the vehicular lamp 10 forms an OHS light distribution pattern OHP on the upper side of the low beam light distribution pattern LP, as shown in FIG. The OHS light distribution pattern OHP has two dark portions Ds formed by the both light amount adjusting portions 29 provided on the second OHS reflecting surface 28. Here, since the second OHS reflecting surface 28 has a reflection characteristic in which the ratio of diffuse reflection is larger than that of regular reflection, as shown in FIG. 2, most of the light incident on the second OHS reflection surface 28 is caused to travel to the projection lens 15 while being diffused. . For this reason, the OHS light distribution pattern OHP, which is an image of the second OHS reflecting surface 28, is blurred in outline and the boundary between both dark portions Ds as shown in FIG.

  Here, the vehicular lamp 10 includes the size (dimensions) of the second OHS reflecting surface 28 and the both light quantity adjusting units provided on the second OHS reflecting surface 28 according to the ratio (reflection characteristics) of the diffuse reflection to the regular reflection of the second OHS reflecting surface 28. 29 sizes (dimensions) are set. More specifically, the larger the ratio of diffuse reflection to regular reflection, the smaller the second OHS reflecting surface 28 and the larger the both light quantity adjusters 29. This is due to the following. Since the OHS light distribution pattern OHP is an image of the second OHS reflection surface 28, the ratio of the size of both the light quantity adjustment units 29 in the second OHS reflection surface 28 is the ratio of the size of each dark portion Ds in the OHS light distribution pattern OHP. It almost matches. As described above, the OHS light distribution pattern OHP has a blurred outline and a boundary between both dark portions Ds by making the second OHS reflection surface 28 a reflection surface with low glossiness. Then, the OHS light distribution pattern OHP is larger than the OHS light distribution pattern (OHPt (see FIG. 8)) formed on the second glossy OHS reflecting surface having a high glossiness. The ratio of the size of the dark portion Ds in the OHS light distribution pattern OHP is smaller than the ratio of the size of. These ratios increase as the ratio of diffuse reflection to regular reflection increases. From this, the vehicular lamp 10 has a larger size of the both light quantity adjusting units 29 on the second OHS reflecting surface 28 than the ratio of the size of the dark portion Ds in the OHS light distribution pattern OHP according to the ratio of diffuse reflection to regular reflection. Increase the ratio. Further, when the vehicular lamp 10 forms the OHS light distribution pattern OHP (OHPt) having the same size, the second OHS reflecting surface 28 is made smaller than the second OHS reflecting surface having high glossiness.

  Here, the technical problem of the conventional vehicular lamp will be described. The subject of this technique is the same as that described above even if the vehicle lamp 10 of the first embodiment is not set in the reflection characteristics of the second OHS reflecting surface 28 as described above. To do. In the vehicular lamp 10, when the second OHS reflecting surface 28 is a reflective surface having high glossiness (reflection characteristics) as in the prior art, an OHS light distribution pattern OHPt that is an image of the second OHS reflecting surface 28 is shown in FIG. The outline becomes clear, and the boundary between both dark portions Dst becomes clear. Then, the two dark portions Dst are conspicuous in the brightly illuminated OHS light distribution pattern OHPt, and give the passenger a sense of incongruity.

  On the other hand, the vehicular lamp 10 of the present invention uses the second OHS reflection surface 28 as a reflection surface (reflection characteristics) having a low glossiness. Therefore, the contour of the OHS light distribution pattern OHP that is an image of the second OHS reflection surface 28 is used. Can be blurred. For this reason, the vehicular lamp 10 can also blur the outlines of the two dark portions Ds formed by the two light quantity adjusting portions 29 provided on the second OHS reflecting surface 28, and the two dark portions Ds can be made inconspicuous.

  The vehicular lamp 10 of one embodiment of the vehicular lamp according to the present invention can obtain the following functions and effects.

  In the vehicular lamp 10, the second OHS reflection surface 28 that forms the OHS light distribution pattern OHP has a reflection characteristic (reflection surface having a low glossiness) having a higher ratio of diffuse reflection to regular reflection than the reflector member 13. For this reason, the vehicular lamp 10 can blur the contours of the OHS light distribution pattern OHP to be formed to blur the contours of the two dark portions Ds, making both the dark portions Ds inconspicuous, giving the passenger a sense of incongruity. This can be suppressed. In particular, the vehicular lamp 10 according to the first embodiment has the second OHS reflecting surface 28 having a reflection characteristic that has a higher diffuse reflection ratio than the regular reflection, and thus is a case where both dark portions Ds of illuminance conforming to the regulations are formed. Even when the OHS light distribution pattern OHP is viewed, it is difficult to recognize both dark portions Ds. This is because the change in illuminance from the bright OHS light distribution pattern OHP becomes gradual due to the blurred outline even in both dark portions Ds that are sufficiently dark (low illuminance) conforming to the regulations. For this reason, the vehicular lamp 10 according to the first embodiment can form both dark portions Ds having a desired illuminance so as to comply with the regulations and the like, and can more reliably suppress giving a sense of incongruity to the occupant. The visibility of the part irradiated with OHP can be improved.

  Further, since the vehicular lamp 10 uses the second OHS reflecting surface 28 as a reflecting surface having a low glossiness, the OHS light distribution pattern OHP is made to travel to the projection lens 15 while diffusing a part of the light incident thereon. Form. For this reason, since the vehicle lamp 10 can emit light for forming the OHS light distribution pattern OHP from the entire projection lens 15, the vehicle lamp 10 is compared with the conventional vehicle lamp. The viewer can be prevented from feeling dazzling. This is due to the following. Since the conventional vehicular lamp uses the second OHS reflecting surface having a high glossiness, most of the light incident on the second OHS reflecting surface proceeds to the projection lens 15 while being regularly reflected. The light is emitted from the lower part of the projection lens 15 as indicated by the alternate long and short dash line (see arrow A3). For this reason, the conventional vehicular lamp emits the light forming the OHS light distribution pattern OHPt in a concentrated manner from the lower part of the projection lens 15, so that the luminance of the lower part of the projection lens 15 increases, and the vehicular lamp is viewed. People feel dazzling. On the other hand, since the vehicular lamp 10 emits light that forms the OHS light distribution pattern OHP from the entire projection lens 15, the light amount for the OHS light distribution pattern OHP is dispersed throughout the projection lens 15. The luminance can be suppressed, and it can be suppressed that a person who sees the vehicular lamp 10 feels dazzling.

  Furthermore, the vehicular lamp 10 is configured such that the reflection characteristic of the second OHS reflecting surface 28 is larger in the ratio of diffuse reflection than in regular reflection by forming the first shade portion 42 with a metal plate with adjusted glossiness. . For this reason, the vehicular lamp 10 can set the reflection characteristics of the second OHS reflecting surface 28 with a simple configuration, and can suppress an increase in cost.

  The vehicular lamp 10 increases the light amount adjusting unit 29 according to the ratio of diffuse reflection to regular reflection in the reflection characteristics of the second OHS reflecting surface 28. For this reason, the vehicular lamp 10 can form the dark portion Ds having a desired luminance with a desired size while making it inconspicuous, and can suppress the passenger from feeling uncomfortable even if it complies with the regulations.

  Since the vehicular lamp 10 has the second OHS reflecting surface 28 partially recessed to form the light amount adjusting unit 29, it is possible to suppress an increase in cost with a simple configuration and to prevent an increase in the weight of the shade 32. The influence on the operation of the shade 32 can be suppressed.

  The vehicular lamp 10 may form the light amount adjusting unit 29 by partially cutting away the second OHS reflecting surface 28. If comprised in this way, while the vehicle lamp 10 can suppress the increase in cost with a simple structure, it can prevent the increase in the weight of the shade 32 and can suppress the influence on operation | movement of the shade 32. FIG.

  Since the vehicular lamp 10 uses the second OHS reflecting surface 28 as a reflecting surface with low glossiness, when the prism is provided on the projection lens 15 to blur the projection light (various light distributions), the vehicular lamp 10 is formed by the prism. Can suppress unevenness of light. This is due to the following. In the OHS light distribution pattern OHP as projection light, there may be unevenness as if the shape (pattern) of the prism provided on the projection lens 15 is projected. However, since the vehicular lamp 10 of the present invention blurs the OHS light distribution pattern OHP using the second OHS reflecting surface 28 as a reflecting surface having a low glossiness, the shape of the prism of the projection lens 15 that can be projected is also blurred. And unevenness of light can be suppressed. Thereby, the vehicle lamp 10 can improve the visibility of the location irradiated with the OHS light distribution pattern OHP.

  Therefore, in the vehicular lamp 10 of the first embodiment as the vehicular lamp according to the present invention, the dark portion Ds can be made inconspicuous in the OHS light distribution pattern OHP.

  Although the vehicular lamp of the present invention has been described based on the first embodiment, the specific configuration is not limited to the first embodiment, and departs from the gist of the invention according to each claim of the claims. Unless otherwise, design changes and additions are permitted.

  In the first embodiment described above, switching between the low beam light distribution pattern LP and the high beam light distribution pattern HP is possible. However, any method may be used as long as it forms the OHS light distribution pattern OHP provided with the dark portion Ds. The configuration of the first embodiment is not limited.

  In Embodiment 1 described above, the shade 32 is formed by three members. However, the first shade portion 42 and the second shade portion 43 may be formed by a single thick member. One member may be formed of a single member, and may have other configurations, and is not limited to the configuration of the first embodiment described above.

  Further, in the first embodiment described above, the light is controlled by the reflector member 13 and the projection lens 15 to form a predetermined light distribution pattern, but it may be controlled only by the reflector member, or only by the projection lens. Alternatively, other configurations may be used, and the configuration is not limited to the configuration of the first embodiment described above.

DESCRIPTION OF SYMBOLS 10 Vehicle lamp 11 Light source 13 Reflector member 15 Projection lens 27 Reflective surface for 1st overhead sign 28 Reflective surface for 2nd overhead sign 29 Light quantity adjustment part 32 Shade

Claims (6)

A projection lens that projects the light emitted from the light source toward the front;
A reflector member that reflects light emitted from the light source to the projection lens;
A shade that blocks a part of the light emitted from the light source to form a cut-off line of a light distribution pattern;
A reflection surface for a first overhead sign that reflects light from the light source from above to the shade side;
For the second overhead sign that is formed on the projection lens side surface of the shade and reflects the light reflected by the first overhead sign reflection surface toward the projection lens so as to be emitted upward from the projection lens. A reflective surface,
The reflective surface for the second overhead sign has a light amount adjustment unit that partially reduces the amount of reflected light to the projection lens,
The vehicular lamp, wherein the reflection characteristic of the second overhead sign reflecting surface has a higher ratio of diffuse reflection to regular reflection than the reflector member.   2. The vehicular lamp according to claim 1, wherein the reflection characteristic of the second overhead sign reflecting surface has a higher ratio of diffuse reflection than regular reflection.   3. The vehicle according to claim 2, wherein the reflection surface for the second overhead sign has a reflection characteristic in which a ratio of diffuse reflection is higher than that of regular reflection because the shade is formed of a metal plate. Light fixture.   The said light quantity adjustment part enlarges a dimension according to the ratio of the diffuse reflection with respect to the regular reflection in the reflection characteristic of the said 2nd overhead sign reflective surface, The any one of Claims 1-3 characterized by the above-mentioned. The vehicle lamp as described in 2.   5. The vehicular lamp according to claim 1, wherein the light amount adjusting portion is formed by partially denting the second overhead sign reflecting surface. 6.   The vehicular lamp according to any one of claims 1 to 4, wherein the light amount adjusting portion is formed by partially cutting out the second overhead sign reflecting surface.