JP6277612B2 - Vehicle lighting - Google Patents

Description

  The present invention relates to a lens direct illumination type vehicle lamp that makes light (direct light) from a semiconductor light source incident on a lens and irradiates the lens as a predetermined light distribution pattern.

  This type of vehicular lamp is conventionally known (for example, Patent Document 1). Hereinafter, a conventional vehicle lamp will be described.

  A conventional vehicular lamp includes a light emitting element and a projection lens. A light beam emitted from the light emitting element and incident on the incident surface of the projection lens is diffused and emitted from the emission surface of the projection lens to the left and right sides to form a low beam. Irradiation. The conventional vehicular lamp has a light exit difference on the far side and the near side of the low beam to increase the near side visibility by the entire exit surface.

JP2011-228196A

  However, the conventional vehicular lamp can reduce the difference in brightness between the far side and the near side of the low beam, but cannot arbitrarily diffuse the light distribution of any part of the low beam.

  The problem to be solved by the present invention is that the conventional vehicular lamp cannot arbitrarily diffuse the partial light distribution of the low beam.

The inventions includes a lens, comprising: a semiconductor-type light source, a lens, having an entrance surface through which the direct light from the semiconductor-type light source opposed to the semiconductor-type light source in the lens, the light incident from the incident surface It is composed of an exit surface that emits from the lens to the outside as a predetermined light distribution pattern, and a light diffusion portion that is provided on a part of the incident surface and diffuses a part of the light distribution of the light distribution pattern, The light distribution pattern is a low beam light distribution pattern, and the light diffusing unit vertically extends so that at least a part of the light distribution pattern having a cut-off line on the opposite lane side of the low beam light distribution pattern straddles the cut-off line vertically. Alternatively, it is characterized in that a light distribution pattern for irradiating a plurality of points on the horizontal line is formed by diffusing substantially vertically .

The inventions, it emitting surface, is divided into a plurality, the light diffusing portion, of the incident plane, be one of the exit surface which is divided the cutoff line on the opposite lane side of the low-beam light distribution pattern It is provided in the range corresponding to the light emission surface which forms the light distribution pattern which has.

The inventions is the light distribution pattern, a low-beam light distribution pattern, the light diffusing portion, of the incident surface, a horizontal line or in the vicinity thereof through a reference optical axis provided in a part of the opposite lane side The light distribution pattern having a cut-off line on the opposite lane side of the low beam light distribution pattern is diffused in the vertical direction or substantially in the vertical direction.

The inventions, the light diffusing portion, have further provided in a part of the lower incidence surface, to diffuse at least a portion of the lower light distribution pattern in the vertical and horizontal direction or substantially vertical and horizontal directions, that Features.

  In the vehicular lamp of the present invention, an arbitrary part of the light distribution of the light distribution pattern can be arbitrarily diffused by the light diffusion portion provided on a part of the entrance surface of the lens.

FIG. 1 is a front view of a lamp unit (lens) showing an embodiment of a vehicular lamp according to the present invention. FIG. 2 is a perspective view illustrating a semiconductor light source. FIG. 3 is a rear view showing the lamp unit (lens). FIG. 4 is a rear perspective view showing the lamp unit (lens). FIG. 5 is an explanatory diagram of a light emitting surface image showing a partial diffusion state of light distribution. FIG. 6 is an explanatory diagram showing a light distribution pattern formed by the first emission surface, the second emission surface, the third emission surface, the fourth emission surface, the fifth emission surface, and the auxiliary lens portion. FIG. 7 is an explanatory diagram showing a low beam light distribution pattern and an overhead sign light distribution pattern.

  DESCRIPTION OF EMBODIMENTS Embodiments (examples) of a vehicular lamp according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. 5 to 7, reference sign “VU-VD” indicates vertical lines on the top and bottom of the screen. Reference sign “HL-HR” indicates horizontal lines on the left and right of the screen. In this specification, front, rear, upper, lower, left, and right are front, rear, upper, lower, left, and right when the vehicular lamp according to the present invention is mounted on a vehicle.

(Description of Configuration of Embodiment)
Hereinafter, the configuration of the vehicular lamp according to this embodiment will be described. In the figure, reference numerals 1L and 1R denote vehicle lamps (for example, a vehicle headlamp, a low beam headlamp, etc.) according to this embodiment. The vehicular lamps 1L and 1R are mounted on the left and right ends of the front portion of the vehicle. The vehicle lamps 1L and 1R are vehicle lamps for left-hand traffic. Therefore, the traveling lane side is the left side, and the opposite lane side is the right side.

(Explanation of lamp unit)
The vehicle lamps 1L and 1R include a lamp housing (not shown), a lamp lens (not shown), a lens 2, a semiconductor-type light source 3, a heat sink member (not shown), and a mounting member (not shown). (Such as a holder and a lens holder).

  The lens 2, the semiconductor-type light source 3, the heat sink member, and the mounting member constitute a lamp unit. The lamp housing and the lamp lens define a lamp chamber (not shown). The lamp unit is disposed in the lamp chamber and is attached to the lamp housing via a vertical optical axis adjustment mechanism (not shown) and a horizontal optical axis adjustment mechanism (not shown). ing. In the lamp chamber, lamp units other than the lamp unit, for example, fog lamps, high beam headlamps, low / high headlamps, turn signal lamps, clearance lamps, daytime running lamps, cornering lamps, and the like are arranged. There is a case.

(Description of the semiconductor-type light source 3)
As shown in FIGS. 1 to 4, the semiconductor light source 3 is a self-luminous semiconductor light source such as an LED, an OEL, or an OLED (organic EL) in this example. The semiconductor-type light source 3 includes a package (LED package) in which a light emitting chip (LED chip) 30 is sealed with a sealing resin member. The package is mounted on a substrate (not shown). A current from a power source (battery) is supplied to the light emitting chip 30 via a connector (not shown) attached to the substrate. The semiconductor-type light source 3 is attached to the heat sink member.

  The light emitting chip 30 has a planar rectangular shape (planar rectangular shape). That is, four square chips are arranged in the X-axis direction (horizontal direction). Two, three, or five or more square chips, one rectangular chip, or one square chip may be used. Front surface of the light emitting chip 30 In this example, the rectangular front surface forms the light emitting surface 31. The light emitting surface 31 faces the front side of a reference optical axis (reference optical axes of the vehicle lamps 1L and 1R, reference optical axis and reference axis of the lens 2) Z. The center O of the light emitting surface 31 of the light emitting chip 30 is located at or near the reference focal point F of the lens 2 and on or near the reference optical axis Z.

  In FIG. 2, X, Y, and Z constitute an orthogonal coordinate (XYZ orthogonal coordinate system). The X axis is a horizontal axis in the left-right direction that passes through the center O of the light emitting surface 31 of the light emitting chip 30, and in this embodiment, the left side is the + direction and the right side is the-direction. The Y axis is a vertical axis passing through the center O of the light emitting surface 31 of the light emitting chip 30. In this embodiment, the upper side is the + direction and the lower side is the-direction. Further, the Z axis is a normal line (perpendicular line) passing through the center O of the light emitting surface 31 of the light emitting chip 30, that is, an axis in the front-rear direction orthogonal to the X axis and the Y axis (the reference optical axis Z). In this embodiment, the front side is the + direction and the rear side is the-direction.

(Description of lens 2)
As shown in FIGS. 1, 3, and 4, the lens 2 includes one incident surface 20 and a plurality of, in this example, five exit surfaces, that is, a first exit surface 21 and a second exit surface 22. , A third exit surface 23, a fourth exit surface 24, and a fifth exit surface 25 (hereinafter may be referred to as “exit surfaces 21 to 25”). The lens 2 is attached to the heat sink member via the attachment member so as to face the semiconductor light source 3. In this example, the center (not shown) of the lens 2 is located below the center O (the X axis and the reference optical axis Z) of the light emitting surface 31 of the light emitting chip 30. Note that the center of the lens 2 and the center O of the light emitting surface 31 of the light emitting chip 30 may coincide with each other, or the center of the lens 2 may be the center O of the light emitting surface 31 of the light emitting chip 30. However, it may be positioned above.

(Description of the incident surface 20)
One incident surface 20 is a surface facing the semiconductor-type light source 3, and in this example, is continuously formed by a quadratic curved surface, a composite quadratic curved surface, or a free curved surface. The incident surface 20 allows light (direct light) from the semiconductor-type light source 3 to enter the lens 2.

(Description of exit surfaces 21 to 25)
The emission surfaces 21 to 25 are surfaces opposite to the surfaces facing the semiconductor light source 3, and in this example, are formed independently from a free-form surface, a composite quadric surface, or a quadric surface.

  The exit surfaces 21 to 25 are entirely divided into upper, middle and lower stages by two horizontal division step surfaces 2U and 2D, and the middle stage by two vertical division step surfaces 2L and 2R. It is divided into a left side (running lane side), a center, and a right side (opposite lane side). That is, it is divided into a total of five.

  The upper emission surface 21 is recessed rearward from the middle emission surfaces 22, 23, 24. The middle output surfaces 22, 23, and 24 are recessed rearward from the lower output surface 25. The middle middle exit surface 23 is recessed rearward from the middle exit surfaces 22 and 24 on both the left and right sides.

  The upper emission surface 21 emits a first light distribution pattern P1 (see FIG. 6A) as a diffused light distribution pattern that is symmetric or substantially symmetric with respect to the vertical line VU-VD above and below the screen. To do.

  The right middle output surface 22 emits a second light distribution pattern P2 (see FIG. 6B) as a diffuse light distribution pattern having a lower horizontal cut-off line CL1 on the right side.

  The middle middle exit surface 23 has a right lower horizontal cutoff line CL1, a central oblique cutoff line CL2, and a left upper horizontal cutoff line CL3 as a third light distribution pattern P3 (FIG. 6). (See (C)).

  The left middle output surface 24 emits a fourth light distribution pattern P4 (see FIG. 6D) as a diffused light distribution pattern having a left upper horizontal cutoff line CL3.

  The lower emission surface 25 emits a fifth light distribution pattern P5 (see FIG. 6E) as a diffused light distribution pattern that is bilaterally or substantially bilaterally symmetric with respect to the vertical line VU-VD above and below the screen. To do.

  By superimposing the five light distribution patterns P1 to P5, a low beam light distribution having a lower horizontal cut-off line CL1, an oblique cut-off line CL2, and an upper horizontal cut-off line CL3 shown in FIGS. 7A and 7B. A pattern LP is formed.

(Description of the first light diffusing unit 6)
As shown in FIGS. 1, 3, and 4, of the incident surface 20 of the lens 2, the horizontal line passing through the reference optical axis Z, that is, the X axis or the vicinity thereof, on the right side (on the opposite lane side). In part, the first light diffusion portion 6 is provided.

  The first light diffusing unit 6 is composed of a semi-cylindrical prism (horizontal cylindrical prism, lateral Kama prism, etc.) whose center line (center axis) is parallel or substantially parallel to the X axis. The first light diffusing unit 6 corresponds to a part of the right side (opposite lane side) that is the horizontal line passing through the reference optical axis Z, that is, the X axis or the vicinity thereof, of the middle exit surface 22 on the right side. Is provided. The first light diffusing unit 6 may be a light diffusing unit other than a semi-cylindrical prism, such as a microstructure.

  A part of the right middle exit surface 22 to which the first light diffusing unit 6 corresponds corresponds to the second light distribution pattern P2 having the lower horizontal cut-off line CL1 on the right side of the low beam light distribution pattern LP. A part (see the light emitting surface image in FIG. 5A) is formed.

  The first light diffusing unit 6 is a part of the second light distribution pattern P2 having the lower horizontal cut-off line CL1 on the right side of the low beam light distribution pattern LP (see the light emitting surface image in FIG. 5A). ) As a first diffused light distribution pattern P7 (see the light emitting surface image of FIG. 5B), as shown in FIG. 7B, is diffused in the vertical direction or substantially in the vertical direction.

  As shown in FIG. 7B, the first diffusion light distribution pattern P7 is irradiated across the lower horizontal cut-off line CL1 on the right side (opposite lane side) of the low beam light distribution pattern LP. Thereby, the range from the lower limit value to the upper limit value of the brightness at the first point P10, the second point P20, and the third point P30 on the left and right horizontal lines HL-HR of the screen of the low beam light distribution pattern LP is satisfied. Can do. The first light diffusing unit 60 diffuses light above the lower horizontal cut-off line CL1 so that light enters a predetermined point.

(Description of Second Light Diffusing Unit 60)
As shown in FIG. 3, a second light diffusing unit 60 is provided on a part of the lens 2 below the incident surface 20.

  The second light diffusing unit 60 includes a fisheye prism group. The second light diffusing unit 60 is provided corresponding to a part of the lower side of the lower emission surface 25. The second light diffusing unit 60 may be a light diffusing unit other than the fisheye prism group, such as a microstructure.

  A part of the lower side of the lower emission surface 25 corresponding to the second light diffusing unit 60 forms a part of the lower side of the fifth light distribution pattern P5.

  As shown in FIG. 7B, the second light diffusing unit 60 forms a lower part of the fifth light distribution pattern P5 in the vertical and horizontal directions as the second diffusion light distribution pattern P8. Alternatively, it is diffused substantially vertically and horizontally.

  As shown in FIG. 7B, the second diffused light distribution pattern P8 is applied to the lower side of the low beam light distribution pattern LP. As a result, the spectral color generated on the lower side of the low beam light distribution pattern LP can be erased (that is, the horizontal stripes of light can be reduced).

(Description of the third light diffusing unit 61)
As shown in FIG. 3, a third light diffusing portion 61 is provided on a part of the lens 2 on the left side of the incident surface 20. The third light diffusing unit 61 includes a prism, a microstructure, and the like.

  The upper right part of the left middle exit surface 24 corresponding to the third light diffusion part 61 forms part of the fourth light distribution pattern P4. The third light diffusing unit 61 diffuses a part of the fourth light distribution pattern P4 in the vertical direction or substantially in the vertical direction (or on the lower side). Thereby, the spectral color generated in the upper horizontal cut-off line CL3 of the low beam light distribution pattern LP can be erased (that is, the horizontal stripe of light is reduced).

(Description of the fourth light diffusion portion 62)
As shown in FIG. 3, a fourth light diffusing portion 62 is provided at a part of the center of the incident surface 20 of the lens 2. The fourth light diffusing unit 62 includes a prism, a microstructure, and the like.

  The lower right part of the central middle emission surface 23 corresponding to the fourth light diffusing part 62 forms a part of the third light distribution pattern P3. The fourth light diffusion part 62 diffuses a part of the third light distribution pattern P3 in the vertical direction or substantially in the vertical direction (or the lower side). Thereby, the spectral color generated under the lower horizontal cut-off line CL1 of the low beam light distribution pattern LP can be erased (that is, the horizontal stripe of light is reduced).

(Description of auxiliary lens unit 4)
An auxiliary lens unit 4 is integrally provided on the lower side of the lens 2. The auxiliary lens unit 4 includes an incident surface 40, a total reflection surface 41, and an exit surface 42. The auxiliary lens unit 4 receives light from the semiconductor-type light source 3 from the incident surface 40, totally reflects the incident light on the total reflection surface 41, and emits the total reflected light from the emission surface 42. Then, the emitted light L6 is irradiated as an overhead sign light distribution pattern P6 shown in FIGS. 6 (F) and 7 (A).

  The overhead sign light distribution pattern P6 formed by the auxiliary lens unit 4 is an auxiliary light distribution pattern with respect to the main light distribution pattern of the low beam light distribution pattern LP formed by the lens 2.

(Description of flange part 5)
A flange portion 5 is integrally provided around the lens 2 and the auxiliary lens portion 4. The flange portion 5 is for attaching to the attachment member. The lens 2 and the auxiliary lens portion 4 are attached to the attachment member via the flange portion 5.

(Description of the operation of the embodiment)
The vehicular lamps 1L and 1R according to this embodiment are configured as described above, and the operation thereof will be described below.

  The semiconductor light source 3 is turned on. Then, most of the light from the light emitting surface 31 of the semiconductor light source 3 is refracted and incident into the lens 2 from one incident surface 20 of the lens 2. At this time, the light distribution of the incident light is controlled on the incident surface 20. The incident light is refracted and emitted from the five exit surfaces 21 to 25 of the lens 2 to the outside. At this time, the emitted light is subjected to light distribution control on the emission surfaces 21 to 25. The emitted light is irradiated in front of the vehicle as five light distribution patterns P1 to P5.

  That is, the light is emitted from the upper emission surface 21 to the front of the vehicle as the first light distribution pattern P1 shown in FIG. From the middle exit surface 22 on the right side, the light is emitted forward of the vehicle as a second light distribution pattern P2 having a lower horizontal cut-off line CL1 shown in FIG. From the central middle exit surface 23, the light is irradiated forward of the vehicle as a third light distribution pattern P3 having a lower horizontal cut-off line CL1, an oblique cut-off line CL2, and an upper horizontal cut-off line CL3 shown in FIG. From the left middle output surface 24, the light is emitted ahead of the vehicle as a fourth light distribution pattern P4 having an upper horizontal cut-off line CL3 shown in FIG. From the lower emission surface 25, the light is emitted in front of the vehicle as a fifth light distribution pattern P5 shown in FIG.

  By superimposing the five light distribution patterns P1 to P5, a low beam light distribution having a lower horizontal cut-off line CL1, an oblique cut-off line CL2, and an upper horizontal cut-off line CL3 shown in FIGS. 7A and 7B. A pattern LP is formed. Here, the upper edges of the first light distribution pattern P1 and the fifth light distribution pattern P5 are located slightly below the lower horizontal cutoff line CL1, the oblique cutoff line CL2, and the upper horizontal cutoff line CL3.

  On the other hand, part of the light from the semiconductor light source 3 is refracted and incident from the incident surface 40 of the auxiliary lens unit 4 into the auxiliary lens unit 4. At this time, the light distribution of the incident light is controlled on the incident surface 40. The incident light is totally reflected by the total reflection surface 41 of the auxiliary lens unit 4. At this time, the light distribution of the totally reflected light is controlled on the reflecting surface 41. The totally reflected light is refracted and emitted from the emission surface 42 of the auxiliary lens unit 4 to the outside. At this time, the outgoing light L6 is subjected to light distribution control on the outgoing face 42. The emitted light L6 is irradiated on the front upper side of the vehicle as an overhead sign light distribution pattern P6 shown in FIGS. 6 (F) and 7 (A).

(Explanation of effect of embodiment)
The vehicular lamps 1L and 1R according to this embodiment are configured and operated as described above, and the effects thereof will be described below.

  The vehicular lamps 1L and 1R according to the present embodiment have an arbitrary low beam distribution pattern LP formed by the first light diffusing unit 6 and the second light diffusing unit 60 provided on a part of the incident surface 20 of the lens 2. A part of the light distribution can be arbitrarily diffused.

  In particular, the vehicular lamps 1L and 1R according to this embodiment cause light (direct light) from the semiconductor-type light source 3 to enter the lens 2 through the incident surface 20 of the lens 2, and the incident light is incident on the lens 2. A predetermined light distribution pattern is emitted from the emission surfaces 21 to 25 as a low beam light distribution pattern LP in this example. For this purpose, the first light diffusing unit 6, the second light diffusing unit 60, the third light diffusing unit 61, and the fourth light diffusing unit 62 provided on a part of the incident surface 20 of the lens 2 provide a low beam distribution. The light distribution of any part of the pattern LP can be arbitrarily diffused.

  Here, a projector-type vehicular lamp will be described. Even if a light diffusing portion is provided on the incident surface of the projection lens of a projector-type vehicle lamp, the entire light distribution pattern is diffused by the light diffusing portion. For this reason, in the projector type vehicle lamp, a part of the light distribution pattern cannot be diffused. On the other hand, since the vehicular lamps 1L and 1R according to this embodiment are of a direct lens type, a part of the light distribution pattern can be diffused.

  The vehicle lamps 1L and 1R according to this embodiment are configured such that a part of the second light distribution pattern P2 having the lower horizontal cut-off line CL1 on the right side (the light emitting surface of FIG. As shown in FIG. 7B, the first diffused light distribution pattern P7 (see the light-emitting surface image in FIG. 5B) can be diffused in the vertical direction or substantially in the vertical direction. .

  As shown in FIG. 7B, the first diffused light distribution pattern P7 is irradiated across the lower horizontal cutoff line CL1 on the right side (opposite lane side) of the low beam light distribution pattern LP. Thereby, the range from the lower limit value to the upper limit value of the brightness at the first point P10, the second point P20, and the third point P30 on the left and right horizontal lines HL-HR of the screen of the low beam light distribution pattern LP is satisfied. it can. As a result, a good low beam light distribution pattern LP is obtained.

  In the vehicular lamps 1L, 1R according to this embodiment, the second light diffusing unit 60 causes the lower part of the fifth light distribution pattern P5 to be the first as shown in FIG. The two-diffused light distribution pattern P8 can be diffused in the vertical and horizontal directions or substantially in the vertical and horizontal directions.

  As shown in FIG. 7B, the second diffused light distribution pattern P8 is applied to the lower side of the low beam light distribution pattern LP. As a result, the spectral color generated on the lower side of the low beam light distribution pattern LP can be erased. As a result, a good low beam light distribution pattern LP is obtained.

  The vehicular lamps 1L and 1R according to this embodiment have a plurality of exit surfaces divided into five exit surfaces 21 to 25 in this example, and the light diffusion portions 6, 60, 61, and 62 are provided on the entrance surface 20. It is provided within a range corresponding to the divided exit surfaces 21 to 25. That is, the light diffusion portions 6, 60, 61, 62 do not straddle the two horizontal division step surfaces 2U, 2D and the two vertical division step surfaces 2L, 2R. For this reason, the light diffused by the light diffusing sections 6, 60, 61, 62 is not emitted from the two horizontal division step surfaces 2U, 2D and the two vertical division step surfaces 2L, 2R. It is possible to reliably control the light distribution of the diffused light.

(Description of example other than embodiment)
In this embodiment, a vehicle headlamp and a low beam headlamp will be described. However, in the present invention, vehicle lamps other than vehicle headlamps and low beam headlamps such as fog lamps and high beam headlamps may be used.

  Moreover, in this embodiment, the output surfaces 21-25 are divided | segmented into five pieces. However, in this invention, you may comprise on one surface, without dividing | segmenting an output surface.

  Furthermore, in this embodiment, the case where the output surface 22, 23, 24 of the middle stage is divided into three will be described. However, in the present invention, the middle output surface may be divided into one non-divided case, or divided into two pieces, four pieces or more. In this case, if the number of emission surfaces increases, light distribution control becomes easier, but on the other hand, the loss of light from the semiconductor-type light source 3 increases. Further, when the number of emission surfaces is reduced, the loss of light from the semiconductor-type light source 3 can be reduced, but on the other hand, it is difficult to control light distribution. For this purpose, the number of emission surfaces is adjusted in consideration of the loss of light from the semiconductor light source 3 and the light distribution control.

  Furthermore, in this embodiment, the auxiliary lens portion 4 is provided on the lower side of the lens 2 to form the overhead sign light distribution pattern P6. However, in the present invention, an auxiliary lens portion may be provided around the lens 2 to form an auxiliary light distribution pattern other than the overhead sign light distribution pattern P6. Also, a plurality of auxiliary lens portions may be provided to form a plurality of auxiliary light distribution patterns. Further, the auxiliary lens part is not provided and the auxiliary light distribution pattern may not be formed.

  Furthermore, in this embodiment, the first light diffusing unit 6 is a semicylindrical prism whose center line is parallel to the X axis, and the second light diffusing unit 60 is a fish-eye prism group. However, in the present invention, the light diffusing portion may be a prism other than a semi-cylindrical prism or fisheye prism group whose center line is parallel to the X axis. For example, a semi-cylindrical prism whose center line is parallel to the Y axis (in this case, light is diffused in the left-right direction), and a semi-cylindrical prism whose center line is oblique (in this case, the light is center line) Diffusing in a direction orthogonal to the above).

  Furthermore, in this embodiment, the first light diffusing unit 6, the second light diffusing unit 60, the third light diffusing unit 61, and the fourth light diffusing unit 62 are provided on a part of the incident surface 20 of the lens 2. is there. However, in the present invention, a light incident surface other than the first light diffusing unit 6, the second light diffusing unit 60, the third light diffusing unit 61, and the fourth light diffusing unit 62 is formed on a part of the incident surface 20 of the lens 2. The light distribution of any part of the light distribution pattern can be arbitrarily diffused.

1L, 1R Vehicle lamp 2 Lens 20 Entrance surface 21, 22, 23, 24, 25 Exit surface 2L, 2R Vertical division step surface 2U, 2D Horizontal division step surface 3 Semiconductor type light source 30 Light emitting chip 31 Light emission surface 4 Auxiliary lens unit 40 entrance surface 41 total reflection surface 42 exit surface 5 flange portion 6 first light diffusion portion 60 second light diffusion portion CL1 lower horizontal cut-off line CL2 oblique cut-off line CL3 upper horizontal cut-off line F reference focus HL-HR LP low beam light distribution pattern O center P1 first light distribution pattern P2 second light distribution pattern P3 third light distribution pattern P4 fourth light distribution pattern P5 fifth light distribution pattern P6 overhead sign light distribution pattern P10 first point P20 second Point P30 3rd point VU-VD Linear X X axis Y Y axis Z reference optical axis (Z-axis)

Claims (3)

A lens and a semiconductor-type light source,
The lens is opposed to the semiconductor-type light source and allows incident light from the semiconductor-type light source to enter the lens, and the incident light incident from the incident surface is provided as a predetermined light distribution pattern from the lens to the outside. an exit surface which emits, provided in a part of the incident surface, a light diffusing portion that diffuses the light distribution of a portion of the light distribution pattern, which is composed,
The light distribution pattern is a low beam light distribution pattern,
The light diffusing unit diffuses at least a part of a light distribution pattern having a cut-off line on the opposite lane side of the low beam light distribution pattern vertically or substantially vertically so as to straddle the cut-off line, and horizontally Form a light distribution pattern that illuminates multiple points on the line,
A vehicular lamp characterized by the above. The exit surface is divided into a plurality of parts,
The light diffusing unit corresponds to the exit surface that forms one of the exit surfaces of the entrance surface that forms a light distribution pattern having a cutoff line on the opposite lane side of the low beam light distribution pattern. Provided within the scope of
The vehicular lamp according to claim 1. The light diffusion portion is further provided in a part of the lower side of the incident surface, and diffuses at least a part of the lower side of the light distribution pattern in the vertical and horizontal directions or substantially in the vertical and horizontal directions.
The vehicular lamp according to claim 1 or 2.

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