JP6178589B2 - Vehicle lighting - Google Patents

Description

  The present invention relates to a vehicular lamp that includes a reflector made of a translucent member.

  2. Description of the Related Art Conventionally, as a vehicular lamp including a reflector that reflects light from a light source toward the front of the lamp, one in which the reflector is configured by a translucent member is known.

  For example, “Patent Document 1” describes a reflector in which a front surface of a translucent member is subjected to a light reflection process so that the front surface is configured as a light reflection region.

  And in the vehicle lamp described in this "patent document 1," the light from the 2nd light source different from the said light source is comprised in the inside from the end surface part of a reflector.

  On the other hand, in “Patent Document 2”, as a reflector composed of a translucent member, light from a light source incident inside from an end surface portion is internally reflected on the rear surface thereof, and then directed from the front surface to the front of the lamp. What is configured to emit is described.

  In the vehicle lamp described in “Patent Document 2”, the second light source and the second reflector are arranged behind the reflector, and the light from the second light source is reflected by the second reflector. The light is emitted toward the front of the lamp through the reflector.

JP 2010-40484 A JP 2009-26462 A

  The reflector described in the above-mentioned “Patent Document 1” includes an extension formed to extend to the front side of the lamp from the front side to a position covering the light reflection region from the front side. Since the light from the light source reflected by the light reflection region is reincident, there is a problem that the utilization efficiency with respect to the light from the light source is not good.

  On the other hand, the vehicle lamp described in “Patent Document 2” is difficult to be molded because the reflector is made of a thick translucent member, and therefore, reflection control for light from the light source is difficult. There is a problem that it cannot be performed with high accuracy. In addition, since the light from the second light source reflected by the second reflector is configured to re-enter the reflector made of a thick translucent member, the utilization efficiency for the light from the second light source is not good. There is a problem.

  The present invention has been made in view of such circumstances, and in a vehicular lamp provided with a reflector constituted by a translucent member and first and second light sources, the utilization efficiency with respect to light from each light source It is an object of the present invention to provide a vehicular lamp that can accurately perform light reflection control by a reflector while enhancing the above.

  The present invention is intended to achieve the above object by devising the configuration of the reflector.

That is, the vehicular lamp according to the present invention is
In a vehicular lamp including a first light source and a reflector that reflects light from the first light source toward the front of the lamp,
The reflector is composed of a translucent member,
A second light source arranged to cause light to enter the interior surface or Ra該reflector after the reflector, arranged additionally second such light is incident on the interior of the reflector from the end face of the reflector A light source ,
The front surface of the reflector includes a light reflection region that has been subjected to a light reflection process and a light transmission region that has not been subjected to a light reflection process.
The reflector reflects light from the first light source toward the front of the lamp in the light reflection region, and transmits light from the second light source and the additional second light source incident on the reflector to the light. In the transmission region, the light is emitted toward the front of the lamp.

  The types of the “first light source” and the “second light source” are not particularly limited.

  The specific shape of the “reflector” is not particularly limited as long as the “reflector” is configured to reflect the light from the first light source toward the front of the lamp in the light reflection region.

  The “end face part” means a part located on the end face of the reflector or the periphery thereof, and its specific arrangement is not particularly limited.

  The arrangement of the “light reflection region” and the “light transmission region” and the area ratio between them are not particularly limited.

  As shown in the above configuration, in the vehicular lamp according to the present invention, a part of the front surface of the reflector made of a translucent member is formed as a light reflection region, so that the light from the first light source is emitted in this light reflection region. By reflecting toward the front of the lamp, the light reflection control by the reflector can be performed with high accuracy. Thus, a required light distribution pattern can be formed with high accuracy.

On top of that, the reflector is a light from the second light source incident on the inner rear surface or al so has a configuration to be emitted toward the front of the lamp in the light transmitting region of its front face, from the second light source Utilization efficiency for light can be increased.

  As described above, according to the present invention, in the vehicular lamp including the reflector constituted by the translucent member and the first and second light sources, the light used by the reflector is improved after the utilization efficiency with respect to the light from each light source is increased. Reflection control can be performed with high accuracy.

  In addition, in the present invention, by turning on the second light source, the light transmission region adjacent to the light reflection region can emit light with a relatively wide light emitting area, and thus the lamp design can be provided with novelty.

  In the above configuration, if the first light source and the second light source have different light emitting functions, it is possible to provide a plurality of lamp functions by appropriately controlling lighting of both light sources. Here, “different light emission functions” mean that the first light source and the second light source emit light with different colors, emit light with different brightness, or emit light with different lighting modes. It is.

  In the above configuration, if the light transmission region is arranged in front of the light reflection region, the front end region on the front surface of the reflector can be caused to emit light by turning on the second light source. The novelty of the design can be further enhanced.

In the above configuration, when the additional second light source is arranged so that light is incident on the inside thereof from the upper end surface of the reflector, the additional second light source cannot be seen when the lamp is observed obliquely from above and forward. Thus, the above-described effects can be obtained without impairing the appearance of the lamp.

In such a case, a light guide extending along the upper end surface is disposed above the upper end surface of the reflector, and additional light is incident on the light guide from the side end surface. If the light source is configured so that light from the additional second light source incident on the light guide is emitted toward the upper end surface of the reflector, the additional light source is provided. In addition to minimizing the number of second light sources, light can be uniformly incident from the upper end surface of the reflector.

Side sectional view which shows the vehicle lamp which concerns on one Embodiment of this invention. FIG. 2 is a view taken in the direction of the arrow II in FIG. 1 showing the main part of the vehicle lamp. The same figure as FIG. 1 which shows the 1st modification of the said embodiment. The same figure as FIG. 1 which shows the 2nd modification of the said embodiment. The same figure as FIG. 2 which shows the said 2nd modification The same figure as FIG. 1 which shows the 3rd modification of the said embodiment. The same figure as FIG. 1 which shows the 4th modification of the said embodiment. The figure similar to FIG. 2 which shows the 5th modification of the said embodiment.

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

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

  As shown in these drawings, the vehicular lamp 10 according to the present embodiment includes a first light source in a lamp chamber formed by a lamp body 12 and a transparent translucent cover 14 attached to the front end opening thereof. 20, the reflector 30, the second light source 40, and the sub-reflector 50 are incorporated.

  The vehicular lamp 10 is a lamp disposed on the left side of the front end portion of the vehicle, and has both a headlamp function and a clearance lamp function.

  The first light source 20 is a light emitting diode that emits white light, and is supported by the light source support member 22 with its light emitting surface facing downward. The light source support member 22 is supported by the lamp body 12.

  The reflector 30 is composed of a translucent member (specifically, a colorless and transparent resin member) formed so as to extend along a concave curved surface from the upper end surface 30c to the front end surface 30d. It is supported by. In this case, the concave curved surface is constituted by a rotating paraboloid P having a point near the first light source 20 (for example, a light emission center of the first light source 20) as a focal point and an axis extending in the front-rear direction of the lamp as a central axis Ax. ing.

  At this time, the front end face 30d of the reflector 30 extends in the horizontal direction from the right end portion (the left end portion in the front view of the lamp, the same applies hereinafter) toward the left end portion, but in the vicinity of the left end portion, wraps upward. It extends so as to be curved.

  The front surface 30a of the reflector 30 is subjected to light reflection processing by aluminum vapor deposition or the like in a region excluding the belt-like peripheral region along the front edge, and the portion subjected to the light reflection processing is a first light source. A light reflection region 30a1 is configured to reflect the light from 20 toward the front of the lamp. The light reflecting area 30a1 is composed of a plurality of reflecting elements 30s formed with the paraboloid P as a reference plane.

  In the present embodiment, the headlamp light distribution pattern is formed by synthesizing the light distribution patterns formed by the reflected light from each of the reflective elements 30s.

  On the other hand, a region other than the light reflection region 30a1 on the front surface 30a of the reflector 30 (that is, a belt-like peripheral region along the front end surface 30d of the reflector 30) constitutes a transparent light transmission region 30a2.

  Seven second light sources 40 are arranged on the rear side of the reflector 30. At this time, these seven second light sources 40 are arranged at intervals from each other so as to be located on the inner peripheral side with respect to the outer peripheral edge of the light reflection region 30a1 of the reflector 30 in the front view of the lamp.

  Each of the second light sources 40 is a light emitting diode that emits white light as in the first light source 20, but its output is smaller than that of the first light source 20. Each of the second light sources 40 has a light-emitting surface facing downward (however, the three second light sources 40 located closer to the left end of the reflector 30 are directed to the left) and the common light source support member 42. It is supported. The light source support member 42 is supported by the lamp body 12.

  The sub reflector 50 is disposed on the rear side of the reflector 30 and is supported by the lamp body 12.

  The sub-reflector 50 is arranged in a shape and positional relationship so as to substantially overlap the light transmission region 30a2 of the reflector 30 when viewed from the front of the lamp, and has seven reflecting surfaces 50a. These seven reflecting surfaces 50a are arranged at positions corresponding to the seven second light sources 40, respectively. Each of the reflecting surfaces 50a reflects the light from each second light source 40 toward the front of the lamp as substantially parallel light in the vertical plane and as light diffused in the horizontal direction in the horizontal plane. It is supposed to let you.

  Thereby, after the light from each 2nd light source 40 reflected in each reflective surface 50a of the sub reflector 50 injects into the inside from the rear surface 30b of the reflector 30, it goes to the front of a lamp from the light transmission area | region 30a2 in the front surface 30a. Are emitted.

  In this embodiment, a clearance lamp light distribution pattern is formed by synthesizing the light distribution patterns formed by the reflected light from each of the reflecting surfaces 50a.

  Next, the effect of this embodiment is demonstrated.

  In the vehicular lamp 10 according to the present embodiment, a part of the front surface 30a of the reflector 30 made of a translucent member is formed as a light reflection region 30a1, and thus the light from the first light source 20 is emitted in the light reflection region 30a1. By reflecting toward the front of the lamp, light reflection control by the reflector 30 can be performed with high accuracy. As a result, the headlamp light distribution pattern can be formed with high accuracy.

  In addition, the reflector 30 of the present embodiment is configured to emit the light from each second light source 40 incident on the inside from the rear surface 30b toward the front of the lamp in the light transmission region 30a2 of the front surface 30a. Therefore, the utilization efficiency with respect to the light from each second light source 40 can be increased.

  As described above, according to the present embodiment, in the vehicular lamp 10 including the reflector 30 formed of a translucent member and the first and second light sources 20 and 40, utilization efficiency with respect to light from the light sources 20 and 40 is used. In addition, the light reflection control by the reflector 30 can be performed with high accuracy.

  In addition, in the present embodiment, by turning on each second light source 40, the light transmission region 30a2 adjacent to the light reflection region 30a1 can emit light with a relatively wide light emission area, thereby giving the lamp design a novelty. be able to.

  In the present embodiment, the light from each second light source 40 is reflected by the sub reflector 50 arranged in a shape and positional relationship substantially overlapping with the light transmission region 30a2 of the reflector 30 when viewed from the front of the lamp. Since it is configured to enter the light transmission region 30a2, the light transmission region 30a2 can emit light substantially uniformly.

  At that time, each second light source 40 is disposed so as to be located on the inner peripheral side with respect to the outer peripheral edge of the light reflection region 30a1 of the reflector 30 in the front view of the lamp. It can be made invisible, and the above-mentioned effect can be obtained without impairing the appearance of the lamp.

  In the present embodiment, since the first light source 20 is turned on in the headlamp lighting mode and each second light source 40 is turned on in the clearance lamp lighting mode, the front surface 30a of the reflector 30 is used as the light emitting surface. The vehicular lamp 10 can have the functions of a headlamp and a clearance lamp.

  In the present embodiment, since the light transmission region 30a2 is disposed in front of the light reflection region 30a1, the front end region of the front surface 30a of the reflector 30 emits light when each second light source 40 is turned on. This makes it possible to clearly distinguish the light emitting area between the headlamp lighting mode and the clearance lamp lighting mode.

  In the above-described embodiment, the seven second light sources 40 have been described as being configured by light emitting diodes that emit white light. However, some of the second light sources 40 (for example, three second light sources positioned near the left end of the reflector 30). It is also possible to configure the light source 40) with light emitting diodes that emit light in amber color and to light them in the front turn signal lamp lighting mode.

  In the said embodiment, although demonstrated as what used the light emitting diode as the 1st and 2nd light sources 20 and 40, it is also possible to set it as the structure using the light source of the other kind.

  In the above-described embodiment, the first light source 20 is described as being single, but a configuration including a plurality of first light sources 20 is also possible.

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

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

  FIG. 3 is a view similar to FIG. 1 showing a vehicular lamp 110 according to this modification.

  As shown in the figure, the vehicular lamp 110 according to the present modification has the same basic configuration as that of the above embodiment, but instead of the second light source 40 and the sub reflector 50 of the above embodiment. In the second embodiment, the second light source 140 and the lens 150 are arranged.

  That is, in this modification, a plurality of sets of second light sources 140 and lenses 150 are arranged on the rear side of the reflector 30. The second light source 140 and the lens 150 of each set are disposed at a distance from each other so as to be positioned on the rear side of the light transmission region 30a2 of the reflector 30.

  Each second light source 140 is a light emitting diode that emits white light, and is supported by a common light source support member 142 with its light emitting surface facing forward. The light source support member 142 is supported by the lamp body 12.

  Each lens 150 is disposed at a position corresponding to each of the seven second light sources 140 and is supported by the lamp body 12. Each of these lenses 150 is made of a colorless and transparent resin member, and is configured such that light emitted from each second light source 140 is incident from the rear surface 150b and is emitted forward from the front surface 150a. Has been.

  Since these lenses 150 have the same configuration, one of them will be described.

  That is, the rear surface 150b of the lens 150 allows light from the second light source 140 to enter forward as light in the central region, and light from the second light source 140 to travel in directions away from the upper and lower sides on both upper and lower sides. After being incident, it is formed so as to be reflected internally as light traveling forward. On the other hand, the front surface 150a of the lens 150 is formed of a vertical surface orthogonal to the lamp front-rear direction.

  The lens 150 emits light from the second light source 140 toward the front of the lamp as substantially parallel light in the vertical plane and as light that diffuses in the horizontal direction in the horizontal plane. It has become.

  Thereby, the light from each second light source 140 emitted from each lens 150 is incident on the inside from the rear surface 30b of the reflector 30, and then emitted toward the front of the lamp from the light transmission region 30a2 on the front surface 30a. It has become.

  In this modification, the light distribution pattern for the clearance lamp is formed by synthesizing the light distribution patterns formed by the light emitted from these lenses 150.

  Even in the case of adopting the configuration of the present modification, it is possible to obtain the same operational effects as those of the above embodiment.

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

  FIGS. 4 and 5 are views similar to FIGS. 1 and 2, showing a vehicular lamp 210 according to this modification.

  As shown in these drawings, the vehicular lamp 210 according to this modification is the same in the basic configuration as in the above embodiment, but the type of the second light source 240 is the same as in the above embodiment. The third embodiment is different from the above embodiment in that a third light source 260 and a light guide 270 are additionally arranged.

  That is, in this modification, the second light source 240 is configured as a light emitting diode that emits light in amber color, and is lit in the front turn signal lamp lighting mode.

  In the present modification, the light guide 270 is disposed above the upper end surface 30c of the reflector 30 so as to extend along the upper end surface 30c. And the 3rd light source 260 is arrange | positioned at the right-and-left both sides of the side end surface 270a of the both sides of the light guide 270. FIG.

  Each third light source 260 is a light emitting diode that emits white light, and is lit in a clearance lamp lighting mode. Each of these third light sources 260 is arranged with its light emitting surface directed toward the side end surface 270a of the light guide 270. Each of these third light sources 260 is supported by a light source support member (not shown), and this light source support member is supported by the lamp body 12.

  The light guide 270 is made of a colorless and transparent resin member. The light guide 270 has a circular cross-sectional shape, and a plurality of reflective elements 270s are formed on the outer peripheral surface 270b. The plurality of reflecting elements 270s are continuously formed in the longitudinal direction so as to protrude from the outer peripheral surface 270b in a wedge shape.

  In this light guide 270, the light from each third light source 260 incident from each side end face 270a is internally reflected by each reflecting element 270s while being guided in the longitudinal direction, and the outer peripheral face 270b. The light is emitted downward from the lower region.

  The light emitted from the light guide 270 enters the inside from the upper end surface 30c of the reflector 30, and reaches the front end surface 30d while repeating internal reflection by total reflection between the front surface 30a and the rear surface 30b. The light is emitted from the front end face 30d toward the front of the lamp.

  By adopting the configuration of this modification, it is possible to obtain the same operational effects as in the above embodiment.

At this time, in the present modification, by turning on each of the second light sources 240, the light transmission region 30a2 can emit light in amber color so that the function as a front turn signal lamp can be exhibited. The front end face 30d of the reflector 30 can emit white light by turning on 260, and the function as a clearance lamp can be exhibited.
In addition, in this modification, the light from each third light source 260 is emitted from the light guide 270 disposed above the upper end surface 30c of the reflector 30 toward the upper end surface 30c of the reflector 30. In addition, the number of the third light sources 260 can be minimized, and light can be uniformly incident on the inside from the upper end surface 30c of the reflector 30. As a result, the front end face 30d of the reflector 30 can be uniformly illuminated.

  In the present modification, the third light source 260 and the light guide 270 are disposed above the reflector 30. Therefore, when the lamp is observed from the front and obliquely above, it can be made invisible. Thus, the appearance of the lamp can be improved.

  It is also possible to adopt a configuration in which a light shielding plate is arranged on the front side of the third light source 260 and the light guide 270 so that they are not visible from the front direction of the lamp.

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

  FIG. 6 is a view similar to FIG. 1 showing a vehicular lamp 310 according to this modification.

  As shown in these drawings, the vehicular lamp 310 according to the present modification has the same basic configuration as that of the above embodiment, but the second light source 40 and the sub reflector 50 of the above embodiment are similar to those of the above embodiment. Instead, the second light source 340 and the light guide 370 are arranged, which is different from the case of the above embodiment, and the configuration of the reflector 330 is partially different from the case of the above embodiment.

  That is, in this modification, the light guide 370 having the same configuration as the light guide 270 of the second modification is disposed at the same position as the light guide 270.

  In addition, the second light source 340 of the present modification is disposed on both the left and right sides of the side end surfaces 370a on both sides of the light guide 370, similarly to the third light source 260 of the second modification. However, each of these second light sources 340 is a light emitting diode that emits white light and is lit in the clearance lamp lighting mode.

  Similar to the reflector 30 of the above-described embodiment, the reflector 330 of the present modified example has a front surface 330a composed of a light reflecting region 330a1 and a light transmitting region 330a2, and the light reflecting region 330a1 is composed of a plurality of reflecting elements 330s. Has been. However, in the reflector 330 of this modification, the region located behind the light transmission region 330a2 on the rear surface 330b is configured as a light diffusion region 330b1 that has been subjected to light diffusion processing such as embossing.

  In this modification, the light emitted from the light guide 370 enters the inside from the upper end surface 330c of the reflector 330, and repeats internal reflection by total reflection between the front surface 330a and the rear surface 330b, After reaching the light diffusion region 330b1 on the rear surface 330b, the light diffusion region 330b1 is diffusely reflected and emitted from the light transmission region 330a2 on the front surface 330a toward the front of the lamp.

  Note that most of the light incident on the inside from the upper end surface 330c of the reflector 330 is diffusely reflected by the light diffusion region 330b1, so that the amount of light reaching the front end surface 330d is small.

  Even in the case of adopting the configuration of the present modification, it is possible to obtain the same operational effects as in the case of the above embodiment.

  Also in this modified example, as in the case of the second modified example, the number of second light sources 340 is minimized, and light is uniformly incident on the inside from the upper end surface 330c of the reflector 3330. Can be.

  In addition, in this modification, the light diffusely reflected by the light diffusion region 330b1 is emitted from the light transmission region 330a2 toward the front of the lamp, so that the light transmission region 330a2 can emit light uniformly.

  Also in this modified example, the second light source 340 and the light guide 370 can be made invisible when the lamp is observed from obliquely upward from the front.

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

  FIG. 7 is a view similar to FIG. 1 showing a vehicular lamp 410 according to this modification.

  As shown in these drawings, the vehicular lamp 410 according to the present modification has the same basic configuration as that of the third modification, but the second light source 40 and the sub-reflector of the above embodiment. 50 differs from the third modification in that 50 is additionally arranged.

  In other words, the present modification has a configuration including two types of second light sources 40 and 340.

  Even in the case of adopting the configuration of the present modification, it is possible to obtain the same operational effects as in the case of the above embodiment.

  In addition, in the present modification, since the two types of second light sources 40 and 340 are arranged, the brightness as the clearance lamp can be further increased.

  In addition, it is also possible to set it as the structure which has the function as a front turn signal lamp by making one of these two types of 2nd light sources 40 and 340 light-emit in amber color.

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

  FIG. 8 is a view similar to FIG. 2 showing a vehicular lamp 510 according to this modification.

  As shown in these drawings, the vehicular lamp 510 according to the present modification has the same basic configuration as that of the fourth modification, but the second light source 340 of the fourth modification and Instead of the light guide 370, the second light source 540 is arranged.

  At that time, seven second light sources 540 are arranged above the upper end surface 330 c of the reflector 330. These seven second light sources 540 are arranged at intervals from each other along the upper end surface 330 c of the reflector 330. Each of the second light sources 540 is a light emitting diode that emits white light, and is supported by a common light source support member 542 with its light emitting surface facing downward. The light source support member 542 is supported by the lamp body 12.

  Even when the configuration of the present modification is employed, the same operational effects as those of the fourth modification can be obtained.

  Further, in the present modification, the second light source 540 is arranged so that light is incident on the inside thereof from the upper end surface 330c of the reflector 330, so that the second light source 540 can be seen when the lamp is observed from obliquely upward in front. Therefore, the appearance of the lamp can be improved.

  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.

10, 110, 210, 310, 410, 510 Vehicle lamp 12 Lamp body 14 Translucent cover 20 First light source 22, 42, 142, 542 Light source support member 30, 330 Reflector 30a, 150a, 330a Front surface 30a1, 330a1 Light reflection Region 30a2, 330a2 Light transmission region 30b, 150b, 330b Rear surface 30c, 330c Upper end surface 30d, 330d Front end surface 30s, 270s, 330s Reflective element 40, 140, 240, 340, 540 Second light source 50 Sub-reflector 50a Reflective surface 150 Lens 260 Third light source 270, 370 Light guide body 270a, 370a Side end surface 270b Outer peripheral surface 330b1 Light diffusion region Ax Central axis P Rotary paraboloid

Claims (5)

In a vehicular lamp including a first light source and a reflector that reflects light from the first light source toward the front of the lamp,
The reflector is composed of a translucent member,
A second light source arranged to cause light to enter the interior surface or Ra該reflector after the reflector, arranged additionally second such light is incident on the interior of the reflector from the end face of the reflector A light source ,
The front surface of the reflector includes a light reflection region that has been subjected to a light reflection process and a light transmission region that has not been subjected to a light reflection process.
The reflector reflects light from the first light source toward the front of the lamp in the light reflection region, and transmits light from the second light source and the additional second light source incident on the reflector to the light. A vehicular lamp characterized by being configured to emit light forward of the lamp in a transmission region. The first light source is lit in a headlamp lighting mode, and one of the second light source and the additional second light source is lit in a clearance lamp lighting mode and the other is lit in a front turn signal lamp lighting mode. It is configured vehicular lamp according to claim 1, wherein a.   The vehicular lamp according to claim 1, wherein the light transmission region is disposed so as to be positioned in front of the light reflection region. The vehicular lamp according to any one of claims 1 to 3, wherein the additional second light source is disposed so that light enters the reflector from an upper end surface of the reflector. A light guide extending along the upper end surface is disposed above the upper end surface of the reflector,
The additional second light source is arranged to allow light to enter the light guide from a side end surface of the light guide;
The said light guide is comprised so that the light from the said additional 2nd light source which injected into this light guide may be radiate | emitted toward the upper end surface of the said reflector, The said light guide is comprised. Vehicle lamp.

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