JP6474122B2 - Vehicle lighting - Google Patents

Description

  The present invention relates to a vehicular lamp configured to selectively perform low beam irradiation and high beam irradiation.

  Conventionally, as a configuration of a vehicular lamp, a configuration in which low beam irradiation and high beam irradiation can be selectively performed by reflecting light from a light emitting element forward by a reflector is known. .

  “Patent Document 1” describes such a vehicular lamp configured to form a low beam light distribution pattern having horizontal and oblique cutoff lines by low beam irradiation.

Japanese Patent No. 4335621

  In the vehicular lamp described in the “Patent Document 1”, since the horizontal and oblique cut-off lines are formed by lighting different light emitting elements, the cost of the lamp increases accordingly. There is a problem.

  The present invention has been made in view of such circumstances, and is configured so that low beam irradiation and high beam irradiation can be selectively performed by reflecting light from a light emitting element forward by a reflector. An object of the present invention is to provide a vehicular lamp that can form a required light distribution pattern at a low cost.

  In the present invention, the light beam distribution pattern for low beam can be formed with a structure using a single light emitting element by devising the structure of the light emitting element and the reflector, thereby achieving the above object. .

That is, the vehicular lamp according to the present invention is
In a vehicular lamp configured to selectively perform low beam irradiation and high beam irradiation,
A first and a second light emitting element, and a reflector for reflecting the light emitted from the first and second light emitting elements forward,
The reflective surface of the reflector includes a first reflection region where light emitted from the first light emitting element and light emitted from the second light emitting element are incident, and the light emitted from the first light emitting element is not incident. A second reflection region on which light emitted from the second light emitting element is incident,
A low-beam light distribution pattern having horizontal and oblique cut-off lines is formed by lighting the first light-emitting element, and a high-beam light distribution pattern is formed by lighting the second light-emitting element or simultaneously lighting the first and second light-emitting elements. It is comprised so that it may form. It is characterized by the above-mentioned.

  The type of the “first and second light emitting elements” is not particularly limited, and for example, a light emitting diode or a laser diode can be employed.

  The specific positional relationship between the “first reflection region” and the “second reflection region” is not particularly limited.

  The “first reflection region” is configured to form a low beam light distribution pattern having horizontal and oblique cutoff lines by reflecting light emitted from the first light emitting element. The shape of the reflecting surface is not particularly limited.

  As shown in the above configuration, the vehicular lamp according to the present invention is configured to form a low beam light distribution pattern having horizontal and oblique cut-off lines by reflecting light emitted from the first light emitting element at the first reflection region. Therefore, a low beam light distribution pattern can be formed with a configuration using a single light emitting element. Therefore, the cost can be reduced as compared with the conventional vehicular lamp configured to form the horizontal and oblique cut-off lines by lighting different light emitting elements.

  Further, the second reflection region can be used as a dedicated region for controlling reflection of the light emitted from the second light emitting element, and thus is formed by the light emitted from the second light emitting element and reflected by the first reflection region. The deviation of the luminous intensity distribution of the light distribution pattern can be corrected by superimposing the light distribution pattern formed by the light emitted from the second light emitting element and reflected by the second reflection region, and thereby the light distribution for high beam It is possible to easily form a pattern with a required light intensity distribution.

  As described above, according to the present invention, in a vehicular lamp configured to selectively perform low beam irradiation and high beam irradiation by reflecting light from a light emitting element forward by a reflector, A light distribution pattern can be formed at low cost.

  In the above configuration, the first sub-reflection area for forming the horizontal cutoff line in the first reflection area and the second sub-reflection area for forming the oblique cutoff line are both in the left-right direction with respect to the first light emitting element. A first side edge located on the left and right opposite side to the first sub-reflection area and a second sub-reflection area located on the left and right opposite sides of the light emitting surface of the first light emitting element is disposed at the displaced position. The two side edges are formed so as to extend in the front-rear direction, and the first sub-reflection region is arranged at a position intersecting the horizontal plane including the first side edges, and the second sub If the reflection region includes the second side edge and is arranged at a position intersecting with an inclined surface inclined downward or upward at a rising angle of an oblique cut-off line with respect to the horizontal plane, the following is assumed. It is possible to obtain the operation and effect.

  That is, since the first sub-reflection area is disposed at a position intersecting the horizontal plane including the first side edge located on the left and right opposite side to the first sub-reflection area on the light emitting surface of the first light emitting element. By controlling the reflection of the emitted light from the first light emitting element in the first sub-reflection region, a light distribution pattern having a clear horizontal cutoff line can be formed as a light distribution pattern having a small vertical width.

  At that time, the specific reason why such a clear horizontal cut-off line can be formed is as follows.

  That is, when the light emitting surface of the first light emitting element is viewed from the first sub-reflective region, the first side edge located on the opposite side of the outer peripheral edge appears as a clear light / dark boundary line. Further, most of the light leaking as stray light from the peripheral region of the light emitting surface in the first light emitting element becomes light that is directed in a direction close to the normal direction of the light emitting surface, and is light that is largely inclined from the normal direction. Is negligible. Therefore, by forming the horizontal cut-off line using the first sub-reflection area located in a direction greatly inclined from the normal direction of the light emitting surface, this can be made a clear cut-off line.

  Similarly, the second sub-reflection area is disposed at a position intersecting an inclined surface including a second side edge located on the opposite side to the second sub-reflection area on the light emitting surface of the first light emitting element. Therefore, by controlling the reflection of the emitted light from the first light emitting element in the second sub-reflection area, a light distribution pattern having a clear oblique cutoff line can be formed as a light distribution pattern with a small vertical width.

  Then, by forming the light distribution pattern having a clear horizontal cutoff line and the light distribution pattern having a clear oblique cutoff line as a light distribution pattern having a small vertical width, the following operational effects can be obtained. it can.

  That is, in order to ensure the necessary brightness in each of these light distribution patterns, it is necessary to set the diffusion angle in the direction along the horizontal cutoff line or the direction along the oblique cutoff line to a relatively small value. . At this time, by forming each of these light distribution patterns as a light distribution pattern having a small vertical width, it is possible to prevent the near side region from becoming excessively bright in the low beam light distribution pattern. And thereby, forward visibility can be improved.

  In this case, the specific shape of the “light emitting surface” of the first light emitting element is particularly limited as long as both the first and second side edges extend in the front-rear direction. It is not a thing. In this case, the “first and second side edges” may be the same side edge or different side edges.

  In the above configuration, if the outer shape is longer in the left-right direction than the front-rear direction as the light-emitting surface of the first light-emitting element, the following operational effects can be obtained.

  In other words, since the vertical angle for viewing the light emitting surface of the first light emitting element from each of the first and second sub-reflective regions is increased, the brightness of the light distribution pattern having the horizontal cutoff line and the light distribution pattern having the oblique cutoff line is increased. Can be increased. In addition, the sub-reflective region other than the first and second sub-reflective regions in the first reflective region reflects light emitted from the light emitting surface of the first light emitting element in a direction close to the normal direction. Since the reflected light at the time becomes a horizontally long light distribution pattern, it is possible to prevent the near side region from becoming excessively bright in the low beam light distribution pattern.

  In the above configuration, if the normal direction of the light emitting surface of the second light emitting element is a direction closer to the horizontal direction than the normal direction of the light emitting surface of the first light emitting element, the reflection surface of the reflector is It is possible to easily secure the second reflection region where the light emitted from the second light emitting element is incident without the light emitted from the one light emitting element being incident.

  At this time, if the light emitting surface of the second light emitting element is configured to have an outer shape that is longer in the direction orthogonal to the front-rear direction, the emitted light from the second light emitting element reflected by the first and second reflective regions It is possible to easily form the light distribution pattern formed by the above as a light distribution pattern having a relatively large vertical width. This makes it easier to form a high-beam light distribution pattern with a required light intensity distribution.

The front view which shows the vehicle lamp which concerns on 1st Embodiment of this invention. II-II sectional view of FIG. Detailed view of part III in Fig. 1 It is a figure which shows perspectively the light distribution pattern formed with the irradiation light from the said vehicle lamp, Comprising: (a) is a light distribution pattern for low beams, (b) is a figure which shows the light distribution pattern for high beams The same figure as FIG. 1 which shows the modification of the said 1st Embodiment. Front view showing a vehicular lamp according to a second embodiment of the present invention. VII-VII sectional view of FIG. VIII-VIII sectional view of FIG. Detailed view of part IX in FIG. The same figure as FIG. 4 which shows the effect | action of the said 2nd Embodiment. Front view showing a vehicular lamp according to a third embodiment of the present invention. XII-XII sectional view of FIG. XIII-XIII sectional view of FIG. Detailed view of XIV part in Fig. 11 The same figure as FIG. 4 which shows the effect | action of the said 3rd Embodiment.

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

  First, a first embodiment of the present invention will be described.

FIG. 1 is a front view showing a vehicular lamp 10 according to the present embodiment. 2 is a cross-sectional view taken along line II-II in FIG. 1, and FIG.
FIG.

  As shown in these drawings, the vehicular lamp 10 according to the present embodiment is a headlamp disposed at the left front end portion of the vehicle, and is configured to selectively perform low beam irradiation and high beam irradiation. ing.

  As for the vehicular lamp 10, in FIG. 2, the direction indicated by X is “front” (also “front” as a vehicle), and the direction indicated by Y is “left direction” (as a vehicle) orthogonal to “front”. Is also “leftward” but “rightward” in front view of the lamp.

  The vehicular lamp 10 includes a first and second light emitting elements 22 and 24, and a first light emitting element 22 and a first light emitting element 22 in a lamp chamber formed by a lamp body 12 and a transparent translucent cover 14 attached to the front end opening. And the reflector 30 which reflects the emitted light from the 2nd light emitting elements 22 and 24 toward the front is built.

  In the vehicular lamp 10, a low beam light distribution pattern having horizontal and oblique cutoff lines is formed by lighting the first light emitting element 22, and a high beam light distribution pattern is formed by lighting the second light emitting element 24. Is configured to do.

  As shown in FIG. 2, the translucent cover 14 is formed so as to wrap around from the inner side in the vehicle width direction (that is, the right side) toward the outer side in the vehicle width direction.

  The first and second light emitting elements 22 and 24 are both white light emitting diodes and have elongated rectangular light emitting surfaces 22a and 24a. Each of the light emitting surfaces 22a and 24a has a long side set to a value that is twice or more (for example, about 4 times) a short side.

  The first and second light emitting elements 22 and 24 are disposed at the left rear end portion in the lamp chamber and supported by a common heat sink 26.

  The first light emitting element 22 is disposed on the upper surface 26a of the heat sink 26 in a state where the light emitting surface 22a is inclined to the right side ("left side" in the front view of the lamp) with respect to the vertically upward direction. At this time, the inclination angle θ1 with respect to the vertical upward direction in the normal direction of the light emitting surface 22a is set to a value of 15 ° ≦ θ1 ≦ 30 ° (for example, a value of about 20 °). In addition, the first light emitting element 22 is disposed in a state where the light emitting surface 22a is elongated in the left-right direction. Therefore, the side end edge 22a1 constituting the short side of the light emitting surface 22a on the outer side in the vehicle width direction is constituted by a horizontal line extending in the front-rear direction.

  The second light emitting element 24 has a normal direction of the light emitting surface 24a at a position obliquely lower right of the first light emitting element 22 in a direction closer to the horizontal direction than the normal direction of the light emitting surface 22a of the first light emitting element 22. In this case, the light emitting surface 24a is disposed on the right side surface 26b. The inclination angle θ2 of the light emitting surface 24a with respect to the vertically upward direction is a value of 45 ° ≦ θ2 ≦ 90 ° (for example, a value of about 80 °). Is set to Further, the second light emitting element 24 is arranged in a state where the light emitting surface 24a is elongated in a direction perpendicular to the front-rear direction.

  The reflector 30 is formed to extend from the rear of the first and second light emitting elements 22 and 24 toward the right front end portion in the lamp chamber.

  The reflecting surface 30a of the reflector 30 includes a first reflective region 30Aa where light emitted from the first light emitting element 22 is incident, and an output from the second light emitting element 24 where no light emitted from the first light emitting element 22 is incident. And a second reflection region 30Ba on which incident light enters. At that time, the boundary line B between the first reflective region 30Aa and the second reflective region 30Ba is an extended surface of the light emitting surface 22a of the first light emitting element 22 as shown by a one-dot chain line in FIGS. It is set at a position that intersects 30a.

  The first reflective region 30Aa includes a first sub-reflective region 30Aa1 for forming the horizontal cutoff line and a second sub-reflective region 30Aa2 for forming the oblique cutoff line.

  These first and second sub-reflection areas 30Aa1 and 30Aa2 are arranged at positions on the inner side in the vehicle width direction with respect to the first and second light-emitting elements 22 and 24. At this time, the first sub-reflection area 30Aa1 is located above the first sub-reflection area 30Aa1. Are adjacent to each other in the vertical direction. The first and second sub-reflective regions 30Aa1 and 30Aa2 are in a wide range from a position slightly away from the first light emitting element 22 to the inner side in the vehicle width direction to an edge position on the inner side in the vehicle width direction of the reflecting surface 30a. Is formed over.

  The first sub-reflective region 30Aa1 is disposed at a position that intersects a horizontal plane P1 (indicated by a two-dot chain line in FIGS. 1 and 3) including the side edge 22a1 of the light emitting surface 22a of the first light emitting element 22. At this time, the first sub-reflection area 30Aa1 has an upper end extending slightly inward in the horizontal direction toward the inner side in the vehicle width direction above the side end edge 22a1, and a lower end edge thereof being the side end edge 22a1. It is formed so as to extend slightly downward relative to the horizontal direction toward the inside in the vehicle width direction below.

  The first sub-reflection area 30Aa1 is composed of a plurality of reflection elements 30As1 divided into vertical stripes. In each of these reflecting elements 30As1, the light emitted from the first light emitting element 22 is reflected forward as light that is slightly deflected downward and diffused and / or deflected in the horizontal direction.

  The second sub-reflective region 30Aa2 includes an inclined surface P2 that includes the side edge 22a1 of the light emitting surface 22a of the first light emitting element 22 and is inclined downward by 15 ° with respect to the horizontal plane (indicated by a two-dot chain line in FIGS. 1 and 3). It is arranged at the position that intersects. At this time, the second sub-reflection area 30Aa2 has an upper end edge that coincides with a lower end edge of the first sub-reflection area 30Aa1, and a position at which the lower end edge intersects the extended surface of the upper surface 26a of the heat sink 26 (that is, the boundary) (A position slightly below the line B).

  The second sub-reflective region 30Aa2 is composed of a plurality of reflective elements 30As2 that are partitioned into diagonal vertical stripes in a direction orthogonal to the inclined surface P2. In each of the reflecting elements 30As2, the light emitted from the first light emitting element 22 is reflected forward as light that is slightly deflected downward and diffused and / or deflected in the direction along the inclined surface P2. It has become.

  In addition to the first and second sub-reflection areas 30Aa1 and 30Aa2, the first reflection area 30Aa includes a third sub-reflection area 30Aa3 adjacent above the first sub-reflection area 30Aa1 and a fourth sub-reflection adjacent to the left side thereof. Region 30Aa4. At this time, the lower end edge of the fourth sub-reflective region 30Aa4 is set at a position that intersects the extended surface of the upper surface 26a of the heat sink 26.

  The third sub-reflective region 30Aa3 reflects the light emitted from the first light emitting element 22 to the front as light that is slightly deflected downward and relatively diffused in the left-right direction. The fourth sub-reflective region 30Aa4 reflects the light emitted from the first light emitting element 22 to the front as light that is slightly deflected downward and largely diffused in the left-right direction.

  On the other hand, most of the second reflective region 30Ba is disposed at a position adjacent to the lower side of the second and fourth sub-reflective regions 30Aa2 and 30Aa4 on the right side of the right side surface 26b of the heat sink 26.

  The second reflection region 30Ba reflects light emitted from the second light emitting element 24 forward as light that slightly diffuses in the left-right direction.

  FIG. 4 is a perspective view showing a light distribution pattern formed on a virtual vertical screen disposed 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, and the light distribution pattern shown in FIG. 5B is a high beam light distribution pattern.

  A low beam light distribution pattern PL1 shown in FIG. 5A is a left light distribution light beam distribution pattern, and has cut-off lines CL1 and CL2 at its upper edge. The cut-off lines CL1 and CL2 are formed as a horizontal cut-off line CL1 on the opposite lane side portion on the right side of the VV line passing through the HV which is a vanishing point in the front direction of the lamp in the vertical direction. The own lane side portion on the left side of the line is formed as an oblique cut-off line CL2.

  In this low beam distribution pattern PL1, the elbow point E, which is the intersection of the horizontal cut-off line CL1 and the oblique cut-off line CL2, is located about 0.5 to 0.6 ° below HV.

  The low beam light distribution pattern PL1 is formed as a combined light distribution pattern of four light distribution patterns PL1a, PL1b, PL1c, and PL1d formed by lighting the first light emitting element 22.

  The light distribution pattern PL1a is a light distribution pattern formed by the reflected light from the first sub-reflection region 30Aa1.

  This light distribution pattern PL1a is a horizontally long light distribution pattern extending horizontally from the position slightly left of the VV line toward the right side of the VV line, and is formed as a bright light distribution pattern having a narrow vertical width. A clear horizontal cut-off line CL1 is formed at the upper edge.

  The light distribution pattern PL1a is formed as a narrow light distribution pattern having a clear horizontal cut-off line CL1 at the upper end edge. The first sub-reflection area 30Aa1 is formed on the side edge 22a1 of the light emitting surface 22a obliquely upward. This is because it is arranged at a position intersecting with the horizontal plane P1 including the first sub-reflective area 30Aa1 (the first side edge located on the left and right opposite side). The light distribution pattern PL1a is formed as a bright light distribution pattern because the light emitting surface 22a of the first light emitting element 22 has an outer shape that is longer in the left-right direction than in the front-rear direction. This is because the angle in the vertical direction in which the light emitting surface 22a is viewed from the reflection region 30Aa1 increases.

  The light distribution pattern PL1b is a light distribution pattern formed by the reflected light from the second sub-reflection region 30Aa2.

  This light distribution pattern PL1b is a horizontally long light distribution pattern that extends obliquely upward at a tilt angle of 15 ° from the position slightly on the right side of the VV line toward the left side of the VV line, and has a narrow vertical width. It is formed as a light distribution pattern, and a clear oblique cut-off line CL2 is formed at its upper edge.

  The light distribution pattern PL1b is formed as a narrow light distribution pattern having a clear oblique cut-off line CL2 at the upper end edge. The second sub-reflection area 30Aa2 is formed on the side edge 22a1 of the light emitting surface 22a obliquely upward. This is because it is disposed at a position intersecting with the inclined surface P2 including the second sub-reflecting region 30Aa2 (the second side edge located on the left and right opposite side). The light distribution pattern PL1b is formed as a bright light distribution pattern because the light emitting surface 22a of the first light emitting element 22 has an outer shape that is longer in the left-right direction than in the front-rear direction. This is because the angle in the vertical direction for viewing the light emitting surface 22a from the reflection region 30Aa2 increases.

  The light distribution pattern PL1c is a light distribution pattern formed by the reflected light from the third sub-reflective region 30Aa3, and is a horizontally long light that spreads relatively large in the left and right sides around the VV line below the horizontal cutoff line CL1. It is formed as a light distribution pattern.

  The light distribution pattern PL1d is a light distribution pattern formed by the reflected light from the fourth sub-reflection region 30Aa4, and is a horizontally long distribution that extends greatly to the left and right sides around the VV line below the horizontal cutoff line CL1. It is formed as a light pattern.

  The high-beam light distribution pattern PH1 shown in FIG. 5B is formed as a horizontally long light distribution pattern that extends to the left and right sides around HV.

  The high beam light distribution pattern PH1 is formed as a combined light distribution pattern of five light distribution patterns PH1a, PH1b, PH1c, PH1d, and PH1e formed by turning on the second light emitting element 24.

  The four light distribution patterns PH1a to PH1d are light distribution patterns formed by reflected light from the first to fourth sub-reflection regions 30Aa1 to 30Aa4.

  Each of the light distribution patterns PH1a to PH1d is formed by displacing the light distribution patterns PL1a to PL1d formed by turning on the first light emitting element 22 slightly upward, and slightly widens the vertical width and diffuses left and right thereof. It is formed as a light distribution pattern with reduced corners.

  At this time, the light distribution patterns PH1a to PH1d are slightly displaced upward because the second light emitting element 24 is positioned below the first light emitting element 22. In addition, the vertical width of each of the light distribution patterns PH1a to PH1d is slightly widened and the lateral diffusion angle is small. The normal direction of the light emitting surface 24a of the second light emitting element 24 is the light emitting surface 22a of the first light emitting element 22. This is because the direction is closer to the horizontal direction than the normal direction.

  The remaining one light distribution pattern PH1e is a light distribution pattern formed by the reflected light from the second reflective region 30Ba.

  This light distribution pattern PH1e is formed as a slightly horizontally long light distribution pattern centered on HV. At this time, the light distribution pattern PH1e is formed as a spot-like bright light distribution pattern.

  By superimposing the light distribution pattern PH1e on the position of HV with respect to the four light distribution patterns PH1a to PH1d, the deviation of the light intensity distribution of the four light distribution patterns PH1a to PH1d is corrected. The light distribution pattern PH1 is formed as a light distribution pattern having an appropriate light intensity distribution in which the light intensity in the vicinity of HV is the highest and the light intensity gradually decreases toward the peripheral region.

  Next, the effect of this embodiment is demonstrated.

  In the vehicular lamp 10 according to the present embodiment, the light emitted from the first light emitting element 22 is reflected by the first reflection region 30Aa to form the low beam light distribution pattern PL1 having horizontal and oblique cutoff lines CL1, CL2. Thus, the low beam light distribution pattern PL1 can be formed with a configuration using a single light emitting element. Therefore, the cost can be reduced as compared with the conventional vehicular lamp configured to form the horizontal and oblique cut-off lines CL1 and CL2 by lighting different light emitting elements.

  Further, since the second reflection region 30Ba can be used as a dedicated region for controlling reflection of the light emitted from the second light emitting element 24, the light emitted from the second light emitting element 24 and reflected by the first reflection region 30Aa. The light distribution patterns PH1a, PH1b, PH1c, and PH1d formed by the above are superimposed on the light distribution pattern PH1e formed by the light emitted from the second light emitting element 24 and reflected by the second reflective region 30Ba. Accordingly, it is possible to easily form the high beam light distribution pattern PH1 with a required light intensity distribution.

  As described above, according to this embodiment, in the vehicular lamp 10 configured to selectively perform the low beam irradiation and the high beam irradiation by reflecting the light from the light emitting element forward by the reflector, A required light distribution pattern can be formed at low cost.

  Moreover, in the present embodiment, the first sub-reflection area 30Aa1 for forming the horizontal cutoff line CL1 and the second sub-reflection area 30Aa2 for forming the oblique cutoff line CL2 are both the first reflection area 30Aa. The light emitting element 22 is disposed at a position displaced inward (that is, on the right side) in the vehicle width direction, and the side edge 22a1 of the light emitting surface 22a of the first light emitting element 22 is formed to extend in the front-rear direction. In addition, since the first and second sub-reflective regions 30Aa1 and 30Aa2 are arranged at positions intersecting the horizontal plane P1 including the side edge 22a1 and the downward inclined surface P2, respectively, the following operational effects are obtained. Can be obtained.

  That is, the first sub-reflection area 30Aa1 includes a horizontal plane P1 including a side edge 22a1 that is a first side edge located on the opposite side of the first sub-reflection area 30Aa1 on the light emitting surface 22a of the first light emitting element 22. Therefore, the light distribution pattern PL1a having a clear horizontal cut-off line CL1 is formed in the vertical width by controlling the reflection of the emitted light from the first light emitting element 22 in the first sub-reflection region 30Aa1. Can be formed as a small light distribution pattern.

  At that time, the specific reason why such a clear horizontal cut-off line CL1 can be formed is as follows.

  That is, when the light emitting surface 22a is viewed from the first sub-reflective region 30Aa1, the side edge 22a1 located on the opposite side of the outer peripheral edge appears as a clear light / dark boundary line. Further, most of the light leaking as stray light from the peripheral region of the light emitting surface 22a in the first light emitting element 22 is light directed in a direction close to the normal direction of the light emitting surface 22a, and is a direction greatly inclined from the normal direction. There is very little light going to. Therefore, by forming the horizontal cut-off line CL1 using the first sub-reflection region 30Aa1 that is located in a direction greatly inclined from the normal direction of the light emitting surface 22a, it is possible to make this a clear cut-off line.

  Similarly, the second sub-reflective region 30Aa2 includes a side edge 22a1 that is a second side edge located on the opposite side of the second sub-reflective region 30Aa2 on the light emitting surface 22a of the first light emitting element 22. Since the light is emitted from the first light emitting element 22 in the second sub-reflective region 30Aa2, the light distribution pattern PL1b having a clear oblique cut-off line CL2 is formed by being arranged at a position intersecting the plane P2. It can be formed as a light distribution pattern having a small vertical width.

  Then, by forming the light distribution pattern PL1a having the clear horizontal cut-off line CL1 and the light distribution pattern PL1b having the clear oblique cut-off line CL2 as light distribution patterns having a small vertical width as described above, the following operational effects are obtained. Can be obtained.

  That is, in order to ensure the necessary brightness in each of the light distribution patterns PL1a and PL1b, the diffusion angle in the direction along the horizontal cutoff line CL1 or the direction along the oblique cutoff line CL2 is set to a relatively small value. It will be necessary. At this time, by forming each of the light distribution patterns PL1a and PL1b as a light distribution pattern having a small vertical width, it is possible to prevent the near side region from becoming excessively bright in the low beam light distribution pattern PL1. be able to. And thereby, forward visibility can be improved.

  Further, in the present embodiment, since the first and second sub-reflection areas 30Aa1 and 30Aa2 are both arranged on the inner side in the vehicle width direction with respect to the first light emitting element 22, the first reflection area 30A is limited in the space of the limited reflection surface 30a. The first and second sub-reflection regions 30Aa1 and 30Aa2 can be arranged so as to extend as far as possible from the first light emitting element 22. Then, each light distribution pattern PL1a, PL1b is formed as a light distribution pattern having a smaller vertical width by reflected light from a position away from the first light emitting element 22 in the first and second sub-reflection regions 30Aa1, 30Aa2. Can do.

  In the present embodiment, since the light emitting surface 22a of the first light emitting element 22 has an outer shape that is longer in the left-right direction than in the front-rear direction, the following operational effects can be obtained.

  In other words, since the vertical angle of looking at the light emitting surface 22a of the first light emitting element 22 from each of the first and second sub-reflective regions 30Aa1 and 30Aa2 increases, the light distribution pattern PL1a having the horizontal cutoff line CL1 and the oblique cutoff line The brightness of the light distribution pattern PL1b having CL2 can be increased. In addition, the third and fourth sub-reflective regions 30Aa3 and 30Aa4, which are sub-reflective regions other than the first and second sub-reflective regions 30Aa1 and 30Aa2 in the first reflective region 30Aa, are separated from the light emitting surface 22a of the first light-emitting element 22 The light emitted in the direction close to the normal direction is reflected, but the reflected light at that time becomes the horizontally long light distribution patterns PL1c and PL1d, so that the near side region is excessively bright in the low beam light distribution pattern PL1. You can prevent it from becoming.

  Furthermore, in the present embodiment, the light emitting surface 24a of the second light emitting element 24 has a configuration in which the normal direction is oriented closer to the horizontal direction than the normal direction of the light emitting surface 22a of the first light emitting element 22. Therefore, it is possible to easily secure the second reflection region 30Ba where the light emitted from the second light emitting element 24 is incident without the light emitted from the first light emitting element 22 being incident on the reflecting surface 30a of the reflector 30. Become.

  At this time, since the light emitting surface 24a of the second light emitting element 24 has a configuration having a longer outer shape in a direction perpendicular to the front and rear direction, the first and second reflection regions 30Aa and 30Ba are reflected by the first light emitting surface 24a. Each light distribution pattern PH1a to PH1e formed by the light emitted from the two light emitting elements 24 can be formed as a light distribution pattern having a relatively large vertical width. As a result, the high-beam light distribution pattern PH1 can be more easily formed with a required light intensity distribution.

  In the above embodiment, the high-beam light distribution pattern PH1 is formed by lighting the second light-emitting element 24. However, the low-beam light distribution pattern PL1 is formed by simultaneously lighting the first and second light-emitting elements 22, 24. It is also possible to adopt a configuration in which the high beam light distribution pattern is formed as a light distribution pattern in which the high beam light distribution pattern PH1 is superimposed on the light distribution pattern. When such a configuration is adopted, the light distribution pattern for high beam can be made even brighter.

  In the embodiment described above, the vehicular lamp 10 has been described as being configured to form the left light distribution low beam light distribution pattern PL1. However, the vehicular lamp 10 according to the embodiment is reversed left and right. By adopting the configuration, it is possible to form a configuration in which a light distribution pattern for right beam low beam distribution is formed.

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

  FIG. 5 is a view similar to FIG. 1 showing the vehicular lamp 110 according to this modification.

  As shown in the figure, the vehicular lamp 110 is a headlamp disposed at the right front end portion of the vehicle, and is configured to selectively perform low beam irradiation and high beam irradiation.

  The basic configuration of the vehicular lamp 110 is the same as that of the vehicular lamp 10 according to the above-described embodiment, but the arrangement of the first and second light emitting elements 122 and 124 and the configuration of the reflector 130 are the same. This is partly different from the above embodiment. In addition, the structure itself of the 1st and 2nd light emitting elements 122 and 124 is the same as that of the 1st and 2nd light emitting elements 22 and 24 of the said embodiment.

  In this modification, the first and second light emitting elements 122 and 124 are supported by a common heat sink 126 in a state where they are arranged at the left rear end portion in the lamp chamber.

  In that case, the 1st light emitting element 122 is arrange | positioned in the state in which the light emission surface 122a inclined to the left with respect to the vertical upward direction in the position a little lower than the case of the said embodiment. At this time, the inclination angle θ1 with respect to the vertical upward direction in the normal direction of the light emitting surface 122a is set to a value of 0 ° ≦ θ1 ≦ 15 ° (for example, a value of about 5 °).

  On the other hand, in the second light emitting element 124, the normal direction of the light emitting surface 124 a is closer to the horizontal direction than the normal direction of the light emitting surface 122 a of the first light emitting element 122 at a position obliquely lower left of the first light emitting element 122. In this case, the angle of inclination of the light emitting surface 124a is set to the same value as in the above embodiment.

  The reflector 130 has a symmetrical outer shape with the reflector 30 of the above-described embodiment in the front view of the lamp.

  The reflecting surface 130a of the reflector 130 is also a first surface on which light emitted from the first light emitting element 122 is incident with a boundary line B where the extended surface of the light emitting surface 122a of the first light emitting element 122 intersects the reflecting surface 130a as a boundary. The reflective area 130Aa and the second reflective area 130Ba where the outgoing light from the second light emitting element 124 is incident without the outgoing light from the first light emitting element 122 being provided.

  The first reflective region 130Aa is composed of the first, second, third, and fourth sub-reflective regions 130Aa1, 130Aa2, 130Aa3, and 130Aa4, as in the case of the above embodiment, in order to form a horizontal cut-off line. A second sub-reflection region 130Aa2 for forming an oblique cut-off line with respect to the first sub-reflection region 130Aa1 is disposed adjacent to the upper side.

  The first sub-reflective region 130Aa1 is disposed at a position that intersects the horizontal plane P1 including the right side edge 122a1 of the light emitting surface 122a of the first light emitting element 122. At this time, the first sub-reflective region 130Aa1 has an upper edge extending slightly inward in the horizontal direction toward the vehicle width direction above the side edge 122a1, and a lower edge of the first sub-reflection area 130Aa1 from the boundary line B. Also extends slightly below and parallel to the boundary line B. The first sub-reflective region 130Aa1 is composed of a plurality of reflective elements 130As1 divided into vertical stripes.

  The second sub-reflective region 130Aa2 includes the right side edge 122a1 of the light emitting surface 122a of the first light emitting element 122, and is disposed at a position that intersects the inclined surface P2 inclined upward by 15 ° with respect to the horizontal plane. At this time, the lower edge of the second sub-reflection area 130Aa2 coincides with the upper edge of the first sub-reflection area 130Aa1, and the upper edge of the second sub-reflection area 130Aa2 is slightly larger than the inclined surface P2 toward the inner side in the vehicle width direction. It extends at an angle. The second sub-reflective region 130Aa2 is configured by a plurality of reflective elements 130As2 that are divided into diagonal vertical stripes in a direction orthogonal to the inclined surface P2.

  The third and fourth sub-reflection areas 130Aa3 and 130Aa4 have substantially the same configuration as the third and fourth sub-reflection areas 30Aa3 and 30Aa4 of the above embodiment.

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

  Next, a second embodiment of the present invention will be described.

  FIG. 6 is a front view showing the vehicular lamp 210 according to the present embodiment. 7 is a sectional view taken along line VII-VII in FIG. 6, and FIG. 8 is a sectional view taken along line VIII-VIII in FIG. Further, FIG. 9 is a detailed view of a part IX in FIG.

  As shown in these drawings, the vehicular lamp 210 according to the present embodiment is a headlamp disposed at the left front end portion of the vehicle, and is configured to selectively perform low beam irradiation and high beam irradiation. ing.

  The vehicular lamp 210 includes first and second light emitting elements 222 and 224 and a first light emitting element 222 and a second light emitting element 222 in a lamp chamber formed by a lamp body 212 and a transparent translucent cover 214 attached to a front end opening thereof. And the reflector 230 which reflects the emitted light from the 2nd light emitting element 222,224 toward the front is comprised. At this time, in the present embodiment, two second light emitting elements 224 are arranged.

  In the vehicular lamp 210, a low beam light distribution pattern having horizontal and oblique cut-off lines is formed by lighting the first light emitting element 222, and a high beam light distribution pattern is formed by lighting the two second light emitting elements 224. Is formed.

  As shown in FIG. 7, the translucent cover 214 is formed so as to extend slightly inclined toward the rear side from the vehicle width direction inner side (that is, the right side) toward the vehicle width direction outer side.

  The first light emitting element 222 is a white light emitting diode and has the same configuration as the first light emitting element 22 of the first embodiment.

  Each of the second light emitting elements 224 is a white light emitting diode and has an elongated rectangular light emitting surface 224a. The ratio of the long side to the short side is the second light emitting element 224 of the first embodiment. It is set to a smaller value than in the case of.

  The first light emitting element 222 and the two second light emitting elements 224 are disposed at the center rear portion in the lamp chamber and are supported by a common heat sink 226.

  The first light emitting element 222 is disposed on the upper surface 226a of the heat sink 226 in a state where the light emitting surface 222a is inclined to the right side ("left side" in the front view of the lamp) with respect to the vertically upward direction. At this time, the inclination angle θ1 with respect to the vertical upward direction in the normal direction of the light emitting surface 222a is set to a value of 0 ° ≦ θ1 ≦ 15 ° (for example, a value of about 7.5 °). Further, the first light emitting element 222 is arranged in a state where the light emitting surface 222a is elongated in the left-right direction. Therefore, the side edge 222a1 constituting the short side on the outer side in the vehicle width direction and the side edge 222a2 constituting the short side on the inner side in the vehicle width of the light emitting surface 222a are constituted by horizontal lines extending in the front-rear direction.

  The two second light emitting elements 224 have the normal direction of the light emitting surface 224a at a position obliquely lower right and lower left of the first light emitting element 222 than the normal direction of the light emitting surface 222a of the first light emitting element 222. The heat sink 226 is disposed on the right side surface 226b and the left side surface 226c in a state in which the direction is close to the horizontal direction. At that time, the two second light emitting elements 224 are arranged in a symmetrical positional relationship, and the inclination angle θ2 of the light emitting surface 224a with respect to the vertically upward direction is a value of 45 ° ≦ θ2 ≦ 90 ° (for example, 80 °). The value is set to about °. In addition, each of the second light emitting elements 224 is disposed in a state where the light emitting surface 224a is elongated in a direction orthogonal to the front-rear direction.

  The reflector 230 is formed so as to extend from the rear of the first and second light emitting elements 222 and 224 to the left and right sides toward the front end in the lamp chamber.

  The reflecting surface 230a of the reflector 230 includes a first reflection area 230Aa where light emitted from the first light emitting element 222 is incident, and two second light emitting elements 224 where light emitted from the first light emitting element 222 is not incident. And a second reflection region 230Ba on which the emitted light enters. At this time, the boundary line B between the first reflective region 230Aa and the second reflective region 230Ba is such that the extended surface of the light emitting surface 222a of the first light emitting element 222 is a reflective surface, as shown by a one-dot chain line in FIGS. It is set at a position that intersects 230a.

  The first reflection region 230Aa includes a first sub-reflection region 230Aa1 for forming the horizontal cutoff line and a second sub-reflection region 230Aa2 for forming the oblique cutoff line.

  The first and second sub-reflective regions 230Aa1 and 230Aa2 are disposed on the left and right sides with respect to the first light emitting element 222. The first and second sub-reflective regions 230Aa1 and 230Aa2 are formed over a range from a position slightly separated from the first light emitting element 222 to the left and right sides to edge positions on the left and right sides of the reflective surface 230a.

  The first sub-reflective region 230Aa1 is arranged on the right side of the first light emitting element 222 at a position intersecting with a horizontal plane P1 (indicated by a two-dot chain line in FIGS. 6 and 9) including the side edge 222a1 of the light emitting surface 222a. Yes. At this time, the first sub-reflective region 230Aa1 has an upper end extending slightly inward in the horizontal direction toward the inner side in the vehicle width direction above the side end edge 222a1, and its lower end edge is the upper surface of the heat sink 226. It is set at a position that intersects the extended surface of 226a (that is, a position slightly below the boundary line B).

  This first sub-reflective region 230Aa1 is composed of a plurality of reflective elements 230As1 divided into vertical stripes. In each of these reflecting elements 230As1, the light emitted from the first light emitting element 222 is reflected forward as light that is slightly deflected downward and diffused and / or deflected in the horizontal direction.

  The second sub-reflective region 230Aa2 includes, on the left side of the first light emitting element 222, an inclined surface P2 that includes the side edge 222a2 of the light emitting surface 222a and is inclined upward by 15 ° with respect to the horizontal plane (two points in FIGS. 6 and 9). (Shown with a chain line). At this time, the second sub-reflective region 230Aa2 has an upper end extending upward in the vehicle width direction at an inclination angle slightly larger than the inclined surface P2, and a lower end edge extending from the upper surface 226a of the heat sink 226. It is set at a position that intersects the surface.

  The second sub-reflective region 230Aa2 is composed of a plurality of reflective elements 230As2 that are partitioned into diagonal vertical stripes in a direction orthogonal to the inclined surface P2. In each of the reflecting elements 230As2, the light emitted from the first light emitting element 222 is reflected slightly forward as light that is slightly deflected downward and diffused and / or deflected in the direction along the inclined surface P2. It has become.

  In addition to the first and second sub-reflection regions 230Aa1 and 230Aa2, the first reflection region 230Aa is adjacent to the third sub-reflection region 230Aa3 adjacent above the first sub-reflection region 230Aa1 and above the second sub-reflection region 230Aa2. A fourth sub-reflection area 230Aa4 and a fifth sub-reflection area 230Aa5 located between the third and fourth sub-reflection areas 230Aa3 and 230Aa4. At that time, the lower end edge of the fifth sub-reflective region 230Aa5 is set at a position that intersects the extended surface of the upper surface 226a of the heat sink 226.

  The third and fourth sub-reflective regions 230Aa3 and 230Aa4 reflect the light emitted from the first light emitting element 222 toward the front as light that is slightly deflected downward and relatively diffused in the left-right direction. ing. Further, the fifth sub-reflective region 230Aa5 reflects the light emitted from the first light emitting element 222 toward the front as light slightly deflected downward and greatly diffused in the left-right direction.

  On the other hand, the second reflective region 230Ba includes a first sub-reflective region 230Ba1 disposed at a position adjacent to the lower side of the first sub-reflective region 230Aa1 on the right side of the right side surface 226b of the heat sink 226, and the left side surface 226c of the heat sink 226. And a second sub-reflection region 230Ba2 disposed at a position adjacent to the lower side of the second sub-reflection region 230Aa2 on the left side.

  The first sub-reflective region 230Ba1 reflects light emitted from the second light-emitting element 224 on the right side as light that slightly diffuses in the left-right direction, and the second sub-reflective region 230Ba2 The light emitted from the second light emitting element 224 is reflected forward as light that slightly diffuses in the left-right direction.

  FIG. 10 is a perspective view showing a light distribution pattern formed on the virtual vertical screen by light irradiated forward from the vehicular lamp 210. FIG.

  A low beam light distribution pattern PL2 shown in FIG. 5A is a left light distribution light beam distribution pattern, and four light distribution patterns PL2a, PL2b, PL2c formed by lighting the first light emitting element 222, It is formed as a synthetic light distribution pattern of PL2d.

  The light distribution pattern PL2a is a light distribution pattern formed by the reflected light from the first sub-reflection region 230Aa1, and has substantially the same shape as the light distribution pattern PL1a of the first embodiment.

  The light distribution pattern PL2b is a light distribution pattern formed by the reflected light from the second sub-reflection region 230Aa2, and has substantially the same shape as the light distribution pattern PL1b of the first embodiment.

  The light distribution pattern PL2c is a light distribution pattern formed by reflected light from the third and fourth sub-reflection regions 230Aa3 and 230Aa4, and has a shape that is substantially the same as the light distribution pattern PL1c of the first embodiment. ing.

  The light distribution pattern PL2d is a light distribution pattern formed by the reflected light from the fifth sub-reflection region 230Aa5, and has substantially the same shape as the light distribution pattern PL1d of the first embodiment.

  The high-beam light distribution pattern PH2 shown in FIG. 5B is formed as a horizontally long light distribution pattern that extends to the left and right sides with HV at the center.

  The high-beam light distribution pattern PH2 is formed as a combined light distribution pattern of five light distribution patterns PH2a, PH2b, PH2c, PH2d, and PH2e formed by turning on the second light emitting element 24.

  The four light distribution patterns PH2a to PH2d are light distribution patterns formed by the reflected light from the first to fifth sub-reflection areas 230Aa1 to 230Aa5.

  Each of these light distribution patterns PH2a to PH2d is formed by displacing the light distribution patterns PL2a to PL2d formed by turning on the first light emitting element 22 slightly upward, and slightly widens the vertical width and diffuses the left and right sides thereof. It is formed as a light distribution pattern with reduced corners.

  The remaining one light distribution pattern PH2e is a light distribution pattern formed by the reflected light from the first and second sub-reflection areas 230Ba1 and 230Ba2 of the second reflection area 30Ba.

  This light distribution pattern PH2e is formed as a slightly horizontally long light distribution pattern centered on HV. At this time, the light distribution pattern PH2e is formed as a spot-like bright light distribution pattern.

  By superimposing the light distribution pattern PH2e on the HV position with respect to the four light distribution patterns PH2a to PH2d, the deviation of the light intensity distribution of the four light distribution patterns PH2a to PH2d is corrected, and the distribution for high beam is performed. The light pattern PH2 is formed as a light distribution pattern having an appropriate light intensity distribution in which the light intensity in the vicinity of HV is the highest and the light intensity gradually decreases toward the peripheral area.

  Next, the effect of this embodiment is demonstrated.

  Also in the present embodiment, the light emitted from the first light emitting element 222 is reflected by the first reflection region 230Aa, thereby forming a low beam light distribution pattern PL2 having horizontal and oblique cutoff lines CL1, CL2. Therefore, the cost can be reduced as compared with the conventional vehicular lamp.

  Further, since the second reflection region 230Ba can be used as a dedicated region for controlling the reflection of the light emitted from the two second light emitting elements 224, it is easy to form the high beam light distribution pattern PH2 with a required light intensity distribution. It becomes possible.

  Therefore, even when the configuration of the present embodiment is adopted, substantially the same operational effects as those of the first embodiment can be obtained.

  Also in the present embodiment, the first sub-reflection region 230Aa1 is a side edge that is a first side edge located on the left and right opposite sides of the first sub-reflection region 230Aa1 on the light emitting surface 222a of the first light emitting element 222. Since the light emitted from the first light-emitting element 222 is controlled to be reflected in the first sub-reflection area 230Aa1, the light distribution having a clear horizontal cut-off line CL1 is disposed at a position intersecting the horizontal plane P1 including 222a1. The pattern PL2a can be formed as a light distribution pattern with a small vertical width.

  Similarly, the second sub-reflection region 230Aa2 includes a side edge 222a2 that is a second side edge located on the left and right opposite side of the second sub-reflection region 230Aa2 on the light emitting surface 222a of the first light emitting element 222. Since the light is emitted from the first light emitting element 222 in the second sub-reflection region 230Aa2, the light distribution pattern PL2b having a clear oblique cut-off line CL2 is formed by being arranged at a position intersecting the plane P2. It can be formed as a light distribution pattern having a small vertical width.

  Then, the light distribution pattern PL2a having the clear horizontal cut-off line CL1 and the light distribution pattern PL2b having the clear oblique cut-off line CL2 are formed as a light distribution pattern having a small vertical width, and thus the low-beam light distribution pattern PL2 is formed. In this case, it is possible to prevent the near side region from becoming excessively bright and improve the forward visibility.

  Also in the present embodiment, since the light emitting surface 222a of the first light emitting element 222 has an outer shape that is longer in the left-right direction than in the front-rear direction, the light distribution patterns PL2a, PL2b are the same as in the case of the first embodiment. In addition, it is possible to prevent the near side region from becoming excessively bright in the low beam light distribution pattern PL2.

  Further, in the present embodiment, the light emitting surface 224a of each second light emitting element 224 has a configuration in which the normal direction is oriented closer to the horizontal direction than the normal direction of the light emitting surface 222a of the first light emitting element 222. Therefore, it is possible to easily secure the second reflection region 230Ba in which the light emitted from the second light emitting element 224 is incident without the light emitted from the first light emitting element 222 entering the reflecting surface 230a of the reflector 230. It becomes.

  In particular, in the present embodiment, the first sub-reflective region 230Ba1 located on the right side in the second reflective region 230Ba is used as a dedicated region for controlling the reflection of the light emitted from the second light-emitting element 224 on the right side, and the second sub-region located on the left side Since the sub-reflective region 230Ba2 can be used as a dedicated region for controlling the reflection of the light emitted from the second light emitting element 224 on the right side, the high beam light distribution pattern PH2 can be more easily formed with a required light intensity distribution. Become.

  Also in the present embodiment, the light emitting surface 224a of the second light emitting element 224 is configured to have an outer shape that is longer in the direction orthogonal to the front-rear direction, so the first and second reflection regions 230Aa, 230Ba Thus, it is possible to easily form the light distribution patterns PH2a to PH2e formed by the light emitted from the second light emitting element 224 reflected by the light distribution pattern having a relatively large vertical width. As a result, the high beam light distribution pattern PH2 can be more easily formed with a required light intensity distribution.

  As in the present embodiment, the first and second sub-reflection regions 222 and 224 are disposed on the left and right opposite sides with respect to the first light emitting element 222, so that the shape of the reflector 230 is close to a left-right symmetrical shape. It can be easily formed into a shape. Therefore, as a configuration of the vehicle lamp disposed at the right front end portion of the vehicle, only the outer shape of the reflector 230 is reversed left and right, and the configuration of the vehicle lamp 210 is directly translated.

  In the present embodiment, as indicated by a two-dot chain line in FIG. 8, a shade 228 is disposed in a front portion of the first light emitting element 222 on the upper surface 226 a of the heat sink 226, and the first light emitting element 222 is formed by the shade 228. It is also possible to have a configuration in which direct light that is emitted obliquely upward from the front is blocked.

  Next, a third embodiment of the present invention will be described.

  FIG. 11 is a front view showing the vehicular lamp 310 according to the present embodiment. 12 is a cross-sectional view taken along line XII-XII in FIG. 11, and FIG. 13 is a cross-sectional view taken along line XIII-XIII in FIG. Further, FIG. 14 is a detailed view of the XIV portion of FIG.

  As shown in these drawings, the vehicular lamp 310 according to the present embodiment is a headlamp disposed at the left front end portion of the vehicle, and is configured to selectively perform low beam irradiation and high beam irradiation. ing.

  The vehicular lamp 310 includes first and second light emitting elements 322 and 324, and a first light emitting element 322 and a second light emitting element 322 in a lamp chamber formed by a lamp-shaped translucent cover 314 attached to the front end opening of the lamp body 312. And the reflector 330 which reflects the emitted light from the 2nd light emitting element 322,324 to the front is comprised.

  In this vehicular lamp 310, a low beam light distribution pattern having horizontal and oblique cutoff lines is formed by lighting the first light emitting element 322, and a high beam light distribution pattern is formed by lighting the second light emitting element 324. Is configured to do.

  As shown in FIG. 12, the translucent cover 314 is formed so as to extend slightly inclined toward the rear side from the vehicle width direction inner side (that is, the right side) toward the vehicle width direction outer side.

  Each of the first and second light emitting elements 322 and 324 is a white light emitting diode, and has the same configuration as the first and second light emitting elements 22 and 24 of the first embodiment.

  The first light emitting element 322 and the two second light emitting elements 324 are disposed at the center rear part in the lamp chamber and supported by a common heat sink 326.

  The first light emitting element 322 is disposed on the lower surface 326a of the heat sink 326 in a state where the light emitting surface 322a is inclined to the left side ("right side" in the front view of the lamp) with respect to the vertically downward direction. At this time, the inclination angle θ1 with respect to the vertical downward direction in the normal direction of the light emitting surface 322a is set to a value of 0 ° ≦ θ1 ≦ 15 ° (for example, a value of about 7.5 °). In addition, the first light emitting element 322 is disposed in a state in which the light emitting surface 322a is elongated in the left-right direction. Therefore, the side edge 322a1 constituting the short side on the inner side in the vehicle width direction and the side edge 322a2 constituting the short side on the outer side in the vehicle width of the light emitting surface 332a are constituted by horizontal lines extending in the front-rear direction.

  The second light emitting element 324 has a normal direction of the light emitting surface 324a at a position obliquely upward and forward of the first light emitting element 322 so that the normal direction of the light emitting surface 322a of the first light emitting element 322 is closer to the horizontal direction. It is arranged on the front inclined surface 326d of the heat sink 326 in the oriented state. At this time, the inclination angle θ2 of the light emitting surface 324a with respect to the vertically downward direction is set to a value of 30 ° ≦ θ2 ≦ 60 ° (for example, a value of about 45 °). In addition, each of the second light emitting elements 324 is disposed in a state where the light emitting surface 324a is elongated in the left-right direction.

  The reflector 330 is formed to extend from the rear of the first and second light emitting elements 322 and 324 toward the left and right sides toward the front end in the lamp chamber.

  The reflecting surface 330a of the reflector 330 includes a first reflection region 330Aa where light emitted from the first light emitting element 322 is incident, and two second light emitting elements 324 where light emitted from the first light emitting element 322 is not incident. And a second reflection region 330Ba on which the emitted light enters. At that time, the boundary line B between the first reflective region 330Aa and the second reflective region 330Ba is such that the extended surface of the light emitting surface 322a of the first light emitting element 322 is a reflective surface, as shown by a one-dot chain line in FIGS. It is set at a position that intersects 330a.

  The first reflective region 330Aa includes a first sub-reflective region 330Aa1 for forming the horizontal cutoff line and a second sub-reflective region 330Aa2 for forming the oblique cutoff line.

  The first and second sub-reflective regions 330Aa1 and 330Aa2 are disposed on the left and right sides with respect to the first and second light emitting elements 322 and 324. The first and second sub-reflection areas 330Aa1 and 330Aa2 are formed over a range from a position slightly separated from the first light emitting element 322 to the left and right sides to the respective edge positions on the left and right sides of the reflection surface 330a.

  The first sub-reflection region 330Aa1 is arranged on the left side of the first light emitting element 322 at a position intersecting with a horizontal plane P1 (indicated by a two-dot chain line in FIGS. 11 and 14) including the side edge 322a1 of the light emitting surface 322a. Yes. At this time, the first sub-reflection region 330Aa1 is set at a position where the upper end edge intersects the extended surface of the lower surface 326a of the heat sink 326 (that is, a position slightly above the boundary line B). Extends slightly downward in the horizontal direction toward the outside in the vehicle width direction below the side edge 322a1.

  The first sub-reflection area 330Aa1 is composed of a plurality of reflection elements 330As1 divided into vertical stripes. In each of the reflective elements 330As1, the light emitted from the first light emitting element 322 is reflected forward as light that is slightly deflected downward and diffused and / or deflected in the horizontal direction.

  The second sub-reflection region 330Aa2 includes, on the right side of the first light emitting element 322, an inclined surface P2 including two side edges 322a2 of the light emitting surface 322a and inclined downward by 15 ° with respect to the horizontal plane (two points in FIGS. 11 and 14). (Shown with a chain line). At this time, the second sub-reflective region 330Aa2 has its upper end edge set at a position where it intersects the extended surface of the lower surface 326a of the heat sink 326, and its lower end edge faces inward in the vehicle width direction from the inclined surface P2. It extends downward with a slightly large inclination angle.

  The second sub-reflective region 330Aa2 is composed of a plurality of reflective elements 330As2 divided into diagonal vertical stripes in a direction orthogonal to the inclined surface P2. In each of the reflecting elements 330As2, the light emitted from the first light emitting element 322 is reflected forward as light that is slightly deflected downward and diffused and / or deflected in the direction along the inclined surface P2. It has become.

  In addition to the first and second sub-reflection areas 330Aa1 and 330Aa2, the first reflection area 330Aa is adjacent to the third sub-reflection area 330Aa3 adjacent below the first sub-reflection area 330Aa1 and below the second sub-reflection area 330Aa2. Fourth sub-reflection areas 330Aa4 and fifth and sixth sub-reflection areas 330Aa5 and 330Aa6 arranged in two upper and lower stages between the third and fourth sub-reflection areas 330Aa3 and 330Aa4. At this time, the upper end edge of the fifth sub reflection region 330Aa5 located on the upper side is set to a position intersecting with the extended surface of the lower surface 326a of the heat sink 326, and the lower end edge of the sixth sub reflection region 330Aa6 is set on the reflection surface 330a. It extends to the front edge position.

  The third and fourth sub-reflective regions 330Aa3 and 330Aa4 reflect the light emitted from the first light emitting element 322 forward as light that is slightly deflected downward and relatively diffused in the left-right direction. ing. The fifth sub-reflective region 330Aa5 reflects the light emitted from the first light emitting element 322 forward as light that diffuses slightly downward and greatly diffuses in the left-right direction. The sixth sub-reflection region 330Aa6 reflects the light emitted from the first light emitting element 322 forward as light that is slightly deflected downward.

  On the other hand, the second reflective region 330Ba is composed of a first sub-reflective region 330Ba1 disposed at a position adjacent to the upper side of the first sub-reflective region 330Aa1 on the left side of the left side surface 326b of the heat sink 326, and a right side surface 326c of the heat sink 326. Is also provided with a second sub-reflection region 330Ba2 disposed at a position adjacent to the upper side of the second sub-reflection region 330Aa2 on the right side.

  The first and second sub-reflection areas 330Ba1 and 330Ba2 reflect the light emitted from the second light emitting element 324 forward as light that slightly diffuses in the left-right direction.

  FIG. 15 is a perspective view showing a light distribution pattern formed on the virtual vertical screen by light irradiated forward from the vehicular lamp 310.

  A low beam light distribution pattern PL3 shown in FIG. 5A is a left light distribution light beam distribution pattern PL5, and five light distribution patterns PL3a, PL3b, PL3c formed by turning on the first light emitting element 322, It is formed as a synthetic light distribution pattern of PL3d and PL3e.

  The light distribution pattern PL3a is a light distribution pattern formed by the reflected light from the first sub-reflection region 330Aa1, and has substantially the same shape as the light distribution pattern PL1a of the first embodiment.

  The light distribution pattern PL3b is a light distribution pattern formed by reflected light from the second sub-reflection region 330Aa2, and has substantially the same shape as the light distribution pattern PL1b of the first embodiment.

  The light distribution pattern PL3c is a light distribution pattern formed by reflected light from the third and fourth sub-reflection areas 330Aa3 and 330Aa4, and has a shape that is substantially the same as the light distribution pattern PL1c of the first embodiment. ing.

  The light distribution pattern PL3d is a light distribution pattern formed by the reflected light from the fifth sub-reflection region 330Aa5, and has substantially the same shape as the light distribution pattern PL1d of the first embodiment.

  The light distribution pattern PL3e is a light distribution pattern formed by the reflected light from the sixth sub-reflection region 330Aa6, and is formed in the vicinity below the elbow point E. In this case, the light distribution pattern PL3e is formed as a spot-like relatively bright light distribution pattern having a small vertical width with a smaller inclination angle than the light distribution pattern PL3b.

  The high-beam light distribution pattern PH3 shown in FIG. 5B is formed as a horizontally long light distribution pattern that extends to the left and right sides around HV.

  The high beam light distribution pattern PH3 is formed as a combined light distribution pattern of six light distribution patterns PH3a, PH3b, PH3c, PH3d, PH3e, and PH3f formed by lighting the second light emitting element 24.

  The four light distribution patterns PH3a to PH3d are light distribution patterns formed by reflected light from the first to fifth sub-reflection regions 30Aa1 to 30Aa5.

  Each of the light distribution patterns PH3a to PH3d is formed by displacing the light distribution patterns PL3a to PL3d formed by turning on the first light emitting element 22 slightly upward, and slightly widens the vertical width and diffuses left and right thereof. It is formed as a light distribution pattern with reduced corners.

  On the other hand, the light distribution pattern PH3e formed by the reflected light from the sixth sub-reflection region 30Aa6 is formed as a spot-like bright light distribution pattern with a narrow vertical width centered on HV.

  The remaining one light distribution pattern PH3f is a light distribution pattern formed by the reflected light from the first and second sub-reflection areas 330Ba1 and 330Ba2 of the second reflection area 330Ba.

  This light distribution pattern PH3f is formed as a slightly horizontally long light distribution pattern centered on HV. At this time, the light distribution pattern PH3f is formed as a spot-like bright light distribution pattern.

  These two light distribution patterns PH3e and PH3f are superimposed on the position of HV with respect to the four light distribution patterns PH3a to PH3d, thereby correcting the bias of the light intensity distribution of the four light distribution patterns PH3a to PH3d. The high beam light distribution pattern PH3 is formed as a light distribution pattern having an appropriate light intensity distribution in which the light intensity in the vicinity of HV is the highest and the light intensity gradually decreases toward the peripheral region.

  Next, the effect of this embodiment is demonstrated.

  Also in the present embodiment, the light emitted from the first light emitting element 322 is reflected by the first reflection region 330Aa to form the low beam light distribution pattern PL3 having the horizontal and oblique cutoff lines CL1 and CL2. Therefore, the cost can be reduced as compared with the conventional vehicular lamp.

  In addition, since the second reflection region 330Ba can be used as a dedicated region for controlling reflection of the light emitted from the second light emitting element 324, the high beam light distribution pattern PH3 can be easily formed with a required light intensity distribution. It becomes.

  Therefore, even when the configuration of the present embodiment is adopted, substantially the same operational effects as those of the first embodiment can be obtained.

  Also in this embodiment, the first sub-reflection area 330Aa1 is a side edge that is a first side edge located on the left and right opposite sides of the first sub-reflection area 330Aa1 on the light emitting surface 322a of the first light emitting element 322. Since the light is emitted from the first light emitting element 322 in the first sub-reflection area 330Aa1, the light distribution having a clear horizontal cut-off line CL1 is arranged at the position intersecting the horizontal plane P1 including 322a1. The pattern PL3a can be formed as a light distribution pattern with a small vertical width.

  Similarly, the second sub-reflection region 330Aa2 includes a side edge 322a2 that is a second side edge located on the left and right opposite sides of the light-emitting surface 322a of the first light-emitting element 322 with respect to the second sub-reflection region 330Aa2. Since the light is emitted from the first light emitting element 322 in the second sub-reflection region 330Aa2, the light distribution pattern PL3b having a clear oblique cut-off line CL2 is formed by being arranged at a position intersecting the plane P2. It can be formed as a light distribution pattern having a small vertical width.

  Then, the light distribution pattern PL3a having the clear horizontal cut-off line CL1 and the light distribution pattern PL3b having the clear oblique cut-off line CL2 are formed as light distribution patterns having a small vertical width as described above, whereby the low-beam light distribution pattern PL3. In this case, it is possible to prevent the near side region from becoming excessively bright and improve the forward visibility.

  Also in this embodiment, since the light emitting surface 322a of the first light emitting element 322 has an outer shape that is longer in the left-right direction than in the front-rear direction, the light distribution patterns PL3a, PL3b are the same as in the case of the first embodiment. In addition, it is possible to prevent the near side region from becoming excessively bright in the low beam light distribution pattern PL3.

  Furthermore, in the present embodiment, the light emitting surface 324a of the second light emitting element 324 has a configuration in which the normal direction is oriented closer to the horizontal direction than the normal direction of the light emitting surface 322a of the first light emitting element 322. Therefore, it is possible to easily secure the second reflection region 330Ba in which the light emitted from the second light emitting element 324 is incident without the light emitted from the first light emitting element 322 being incident on the reflecting surface 330a of the reflector 330. Become.

  In particular, in the present embodiment, a spot-like bright light distribution pattern PH3e having a narrow vertical width centered on HV is formed by light from the second light emitting element 324 reflected by the sixth sub-reflection region 30Aa6. Therefore, the central luminous intensity of the high beam light distribution pattern PH3 can be further increased.

  At this time, the light distribution pattern PH3e is formed as a spot-shaped light distribution pattern with a narrow vertical width because the second light-emitting element 324 has a light-emitting surface 324a that is long in the left-right direction and the sixth sub-reflection. This is because the region 30 </ b> Aa <b> 6 is arranged at a position that is considerably separated from the second light emitting element 324 in a diagonally downward and forward direction. The light distribution pattern PH3e is formed as a bright light distribution pattern because the sixth sub-reflection region 30Aa6 is positioned in a direction close to the normal direction of the light emitting surface 324a of the second light emitting element 324. Is.

  Also in this embodiment, since the first and second sub-reflection regions 322 and 324 are disposed on the left and right opposite sides with respect to the first light emitting element 322, the shape of the reflector 230 is formed in a shape close to a left-right symmetric shape. Can be easily done. Therefore, as a configuration of the vehicle lamp disposed at the right front end portion of the vehicle, only the outer shape of the reflector 330 is reversed left and right, and the configuration of the vehicle lamp 310 is translated as it is.

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

  Further, the present invention is not limited to the configurations described in the above embodiments and modifications thereof, and configurations in which various other changes are added can be employed.

10, 110, 210, 310 Vehicle lamps 12, 112, 212, 312 Lamp body 14, 114, 214, 314 Translucent cover 22, 122, 222, 322 First light emitting element 22a, 24a, 122a, 124a, 222a, 224a, 322a, 324a Light emitting surface 22a1, 122a1, 222a1, 322a1 Side edge (first side edge)
222a2, 322a2 side edge (second side edge)
24, 124, 224, 324 Second light emitting element 26, 126, 226, 326 Heat sink 26a, 226a Upper surface 26b, 226b, 326a Right side surface 30, 130, 230, 330 Reflector 30a, 130a, 230a, 330a Reflecting surface 30Aa, 130Aa , 230Aa, 330Aa First reflective area 30Aa1, 130Aa1, 230Aa1, 330Aa1 First sub reflective area 30Aa2, 130Aa2, 230Aa2, 330Aa2 Second sub reflective area 30Aa3, 130Aa3, 230Aa3, 330Aa3 Third sub reflective area 30Aa4, 130Aa4 330Aa4 Fourth sub-reflection area 230Aa5, 330Aa5 Fifth sub-reflection area 30As1, 30As2, 130As1, 130As2, 230As1, 2 0As2, 330As1, 330As2 Reflective elements 30Ba, 130Ba, 230Ba, 330Ba Second reflective region 226c, 326b Left side 228 Shade 230Ba1, 330Ba1 First sub reflective region 230Ba2, 330Ba2 Second sub reflective region 326a Lower surface 326a Front inclined surface 330A 6 sub-reflection area B boundary line CL1 horizontal cut-off line CL2 oblique cut-off line E elbow point PH1, PH2, PH3 light distribution pattern for high beam PL1, PL2, PL3 light distribution pattern for low beam PH1a, PH1b, PH1c, PH1d, PH1e, PH2a, PH2b, PH2c, PH2d, PH2e, PH3a, PH3b, PH3c, PH3d, PH3e, PH3f, PL1a, PL1b, PL1c, PL1d, P 2a, PL2b, PL2c, PL2d, PL3a, PL3b, PL3c, PL3d, PL3e light distribution pattern P1 horizontal P2 inclined surface

Claims (5)

In a vehicular lamp configured to selectively perform low beam irradiation and high beam irradiation,
A first and a second light emitting element, and a reflector for reflecting the light emitted from the first and second light emitting elements forward,
The reflective surface of the reflector includes a first reflection region where light emitted from the first light emitting element and light emitted from the second light emitting element are incident, and the light emitted from the first light emitting element is not incident. A second reflection region on which light emitted from the second light emitting element is incident,
A low-beam light distribution pattern having horizontal and oblique cut-off lines is formed by lighting the first light-emitting element, and a high-beam light distribution pattern is formed by lighting the second light-emitting element or simultaneously lighting the first and second light-emitting elements. A vehicular lamp characterized in that the vehicular lamp is formed. The first sub-reflection area for forming the horizontal cut-off line and the second sub-reflection area for forming the oblique cut-off line in the first reflection area both in the left-right direction with respect to the first light emitting element. It is located at the displaced position,
On the light emitting surface of the first light emitting element, a first side edge located on the left and right opposite side to the first sub reflective area and a second side edge located on the left and right opposite side to the second sub reflective area, Both are formed to extend in the front-rear direction,
The first sub-reflection region is disposed at a position intersecting a horizontal plane including the first side edge,
The second sub-reflection region is disposed at a position that intersects with an inclined surface that includes the second side edge and is inclined downward or upward at a rising angle of the oblique cutoff line with respect to a horizontal plane. The vehicular lamp according to claim 1.   3. The vehicular lamp according to claim 1, wherein the light emitting surface of the first light emitting element has an outer shape that is longer in the left-right direction than in the front-rear direction.   The light emitting surface of the second light emitting element is characterized in that a normal direction of the light emitting surface faces a direction closer to a horizontal direction than a normal direction of the light emitting surface of the first light emitting element. The vehicle lamp according to any one of? 3.   5. The vehicular lamp according to claim 4, wherein the light emitting surface of the second light emitting element has an outer shape that is longer in a direction perpendicular to the front-rear direction than in the front-rear direction.

Images