JP2014127423A - Vehicle headlamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that, in a conventional vehicle headlamp, it is difficult to obtain a light distribution pattern excellent in remote visibility in combination with a low-beam light distribution pattern.SOLUTION: This vehicle headlamp comprises a first lamp unit 3 and a second lamp unit 2. The first lamp unit 3 comprises a shade 33. The shade 33 has a vertical edge 330 and a recessed edge 331. The first lamp unit 3 irradiates the front of a vehicle with an ADB light distribution pattern P having a vertical cutoff line CL4 and a protrusive light distribution pattern P1. The second lamp unit 2 irradiates the front of the vehicle with a low-beam light distribution pattern LP. As a result, a light distribution pattern excellent in remote visibility can be obtained in combination with the low-beam light distribution pattern LP.

Description

  The present invention relates to a vehicle headlamp that irradiates a front of a vehicle with a light distribution pattern having excellent visibility in the distance. In particular, the present invention relates to a vehicular headlamp that can obtain a light distribution pattern having excellent visibility in the distance by combining with a low beam light distribution pattern.

  This type of vehicle headlamp has been conventionally used (for example, Patent Document 1 and Patent Document 2). Hereinafter, a conventional vehicle headlamp will be described. The vehicle headlamp of Patent Document 1 forms a vertical cut-off line with a fixed light shielding plate and irradiates a high beam light distribution pattern having the vertical cut-off line. The vehicle headlamp of Patent Document 2 forms a vertical cutoff line by a mirror member and irradiates a high beam additional light distribution pattern having the vertical cutoff line.

JP 2012-38609 A JP 2010-140661 A

  However, the conventional vehicle headlamp is applied to a high beam light distribution pattern. For this reason, in the conventional vehicle headlamp, it is difficult to obtain a light distribution pattern with excellent distant visibility by combination with the low beam light distribution pattern.

  The problem to be solved by the present invention is that it is difficult for a conventional vehicle headlamp to obtain a light distribution pattern with excellent visibility in the distance by combining with a low beam light distribution pattern.

  The present invention (invention according to claim 1) provides a first lamp unit for irradiating a light distribution pattern having a vertical cutoff line in front of the vehicle, and a low beam light distribution pattern having a horizontal cutoff line and an oblique cutoff line. A second lamp unit that irradiates forward, the first lamp unit includes a shade, and the shade is provided at a vertical edge that forms a vertical cut-off line of the light distribution pattern, and at a part of the vertical edge. Projecting from a part of the vertical cut-off line, and having a concave edge forming a convex light distribution pattern irradiated to a part between the horizontal cut-off line and the oblique cut-off line of the low beam light distribution pattern, Features.

  According to the present invention (the invention according to claim 2), a detection unit that detects the presence or situation of a preceding vehicle ahead or an oncoming vehicle and outputs a detection signal thereof, and a control that outputs a control signal based on the detection signal from the detection unit And a swivel device that is actuated by a control signal from the control unit to rotate at least the first lamp unit about the vertical axis.

  The vehicle headlamp of the present invention (the invention according to claim 1) has a light distribution pattern having a vertical cut-off line and a convex light distribution pattern protruding from a part of the vertical cut-off line from the first lamp unit. A low beam light distribution pattern having a horizontal cut-off line and an oblique cut-off line is emitted from the second lamp unit to the front of the vehicle. As a result, the convex light distribution pattern is irradiated to the portion between the horizontal cutoff line and the oblique cutoff line in the low beam light distribution pattern. Thereby, the light distribution pattern excellent in the visibility of a distant place can be obtained by a combination with a low beam light distribution pattern.

FIG. 1 shows an embodiment of a vehicle headlamp according to the present invention, and is a front view showing a state in which a lamp lens is removed. FIG. 2 is a block diagram showing components of the vehicle headlamp device. 3 is a cross-sectional view taken along line III-III in FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. FIG. 5 is a view taken in the direction of arrow V in FIG. FIG. 6 is an explanatory diagram showing a state where the convex portion light distribution pattern is applied to a portion between the horizontal cutoff line and the oblique cutoff line in the low beam light distribution pattern. FIG. 7 is an explanatory diagram illustrating a light distribution pattern having a vertical cutoff line and a low beam distribution pattern having a horizontal cutoff line and an oblique cutoff line. FIG. 8 shows that the convex portion light distribution pattern of the ADB light distribution pattern irradiated from the first lamp unit of the left vehicle headlamp is in a portion between the horizontal cutoff line and the oblique cutoff line in the low beam light distribution pattern. It is explanatory drawing which shows the state currently irradiated.

  Hereinafter, an example of an embodiment (example) of a vehicle headlamp according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. 6 and 7, reference sign “VU-VD” indicates vertical lines on the upper and lower sides of the screen. Reference sign “HL-HR” indicates horizontal lines on the left and right of the screen. In this specification and the appended claims, front, rear, upper, lower, left, and right are front, rear, upper, lower, and left when the vehicle headlamp according to the present invention is mounted on a vehicle. , Right.

(Description of Configuration of Embodiment)
Hereinafter, the configuration of the vehicle headlamp according to this embodiment will be described. In FIG. 1, reference numeral 1 denotes a vehicle headlamp (for example, a headlamp) according to this embodiment. The vehicle headlamp 1 is mounted on both left and right ends of a front portion of a vehicle for left-hand traffic. Hereinafter, the right vehicle headlamp 1 mounted on the right side of the vehicle will be described. Since the left vehicle headlamp mounted on the left side of the vehicle has substantially the same configuration as the right vehicle headlamp 1, description thereof is omitted.

(Description of the vehicle headlamp 1)
As shown in FIG. 1, the vehicle headlamp 1 includes a first lamp unit 3, a second lamp unit 2 as a low beam lamp unit, a swivel device 91, and a control unit 90 (a dimming control unit, a swivel). A control device of the device 91), a first mounting member 51 and a second mounting member (bracket) 52, optical axis adjusting devices 53, 54, 55, a lamp housing 5, a lamp lens (for example, a transparent outer lens, etc.) ).

  The first lamp unit 3, the second lamp unit 2, the swivel device 91, the dimming controller, the first mounting member 51, the second mounting member 52, and the optical axis adjusting devices 53, 54, 55 The lamp housing 5 and the lamp lens are arranged in a lamp chamber 50 defined by the lamp lens. In the lamp chamber 50, although not shown, other lamp units such as a fog lamp, a cornering lamp, a clearance lamp, and a turn signal lamp may be arranged. Further, the dimming control unit may be disposed outside the lamp chamber 50.

  The first lamp unit 3 is attached to the second attachment member 52 via the first attachment member 51 and the swivel device 91. The second lamp unit 2 is attached to the second attachment member 52. The first lamp unit 3 is disposed inside the vehicle (on the left side in the case of the right vehicle headlamp 1 and on the right side in the case of the left vehicle headlamp). The second lamp unit 2 is disposed outside the vehicle (on the right side in the case of the right vehicle headlamp 1 and on the left side in the case of the left vehicle headlamp).

(Description of swivel device 91)
The swivel device 91 includes a drive unit (not shown) and a drive force transmission mechanism (not shown) housed in a casing 92, and a rotating shaft 93. By driving the driving unit, the driving force of the driving unit is transmitted to the rotating shaft 93 via the driving force transmission mechanism. As a result, the rotating shaft 93 rotates about the vertical axis (including substantially the vertical axis) VV.

  The first attachment member 51 is fixed to the rotating shaft 93 of the swivel device 91. The vertical axis VV of the rotating shaft 93 of the swivel device 91 passes through the center or almost the center of the first lamp unit 3. As a result, the first lamp unit 3 is configured to be rotatable about the vertical axis VV by the swivel device 91 via the first mounting member 51.

  The swivel device 91 is attached to the second attachment member 52. The second attachment member 52 is attached to the lamp housing 5 via the optical axis adjusting devices 53, 54 and 55.

  The swivel device 91 is connected to a control device (see the control unit 90 in FIG. 3) via, for example, a camera sensor or a steering angle sensor (see the detection unit 9 in FIG. 3). When detection signals from the camera sensor and the steering angle sensor are input to the control device, the control device outputs a control signal to the swivel device 91. As a result, the swivel device 91 is driven to rotate the first lamp unit 3 about the vertical axis VV in accordance with the left-right turn of the vehicle.

(Explanation of optical axis adjusting devices 53, 54, 55)
The optical axis adjusting devices 53, 54, and 55 are composed of a pivot mechanism (53), vertical adjustment screws and screw mountings (54), and left and right adjustment screws and screw mountings (55). . As a result, the first lamp unit 3 and the second lamp unit 2 are configured so that the optical axis can be adjusted integrally through the first mounting member 51, the swivel device 91, and the second mounting member 52. Yes.

(Description of the first lamp unit 3)
As shown in FIG. 3, the first lamp unit 3 is a projector type lamp unit. The first lamp unit 3 includes a semiconductor light source 30, a reflector 31, a projection lens 32, a shade 33, a heat sink member 34, and a holder 35.

  The said 1st lamp unit 3 irradiates the front of a vehicle with the ADB light distribution pattern P shown to FIG. 6, FIG. 7 (A), (C). 6, 7 </ b> A, and 7 </ b> C are emitted from the first lamp unit 3 of the right vehicle headlamp 1. The ADB light distribution pattern PL irradiated from the first lamp unit of the left vehicle headlamp is irradiated from the first lamp unit 3 of the right vehicle headlamp 1 as shown in FIG. The ADB light distribution pattern P shown in FIG. 6, FIG.

  The semiconductor-type light source 30 is a self-luminous semiconductor-type light source such as LED, OEL, or OLED (organic EL). The semiconductor light source 30 is attached to the heat sink member 34. The light emitting surface of the semiconductor-type light source 30 faces downward.

  The reflector 31 is provided with a reflection surface 310 formed of an elliptical reflection surface (a reflection surface made of a free-form surface having an ellipse as a basic tone (basic or reference) or a reflection surface made of a spheroid). The reflective surface 310 has a first reference focus (not shown), a second reference focus (not shown), and a reference optical axis. The light emitting surface of the semiconductor light source 30 is located at or near the first reference focus. The reflection surface 310 reflects light from the light emitting surface of the semiconductor light source 30 toward the shade 33 and the projection lens 32. The reflector 31 is attached to the holder 35 directly or via the heat sink member 34.

  The projection lens 32 has a lens focal point (not shown) and a lens axis (not shown). The lens focal point coincides with or substantially coincides with the second reference focal point. The lens axis coincides with or substantially coincides with the reference optical axis. The projection lens 32 irradiates the front of the vehicle with the reflected light from the reflective surface 310 other than the reflected light shielded by the shade 33 as the ADB light distribution pattern P. The projection lens 32 is attached to the holder 35.

  The shade 33 is disposed between the semiconductor-type light source 30, the reflector 31, and the projection lens 32, and at or near the second reference focus, the lens focus. As shown in FIG. 5, the shade 33 is disposed on the outside of the vehicle (on the right side in the case of the right vehicle headlamp 1 and on the left side in the case of the left vehicle headlamp). The shade 33 is attached to at least one of the reflector 31 and the holder 35. The shade 33 has a vertical edge 330 and a concave edge 331.

  The vertical edge 330 is provided on the vertical edge of the shade 33 on the inner side of the vehicle (left side in the case of the right vehicle headlamp 1 and right side in the case of the left vehicle headlamp). The vertical edge 330 forms a vertical cut-off line CL4 inside the vehicle of the ADB light distribution pattern P.

  The concave edge 331 is provided on the upper portion of the vertical edge 330 so as to be recessed outside the vehicle. The concave edge 331 is provided at an angle of about 45 ° obliquely upward on the outside of the vehicle from a point at the top of the vertical edge 330. Due to the concave edge 331, a triangular cutout 332 is formed on the outer side of the vehicle above the vertical edge 330 of the shade 33. The concave edge 331 and the notch 332 form a convex light distribution pattern P1 that protrudes from the lower part of the vertical cutoff line CL4 of the ADB light distribution pattern P to the inside of the vehicle.

  The convex portion light distribution pattern P1 is a portion between the lower horizontal cut-off line CL1 and the oblique cut-off line CL2 (hereinafter referred to as “dark portion”) in the low beam light distribution pattern LP shown in FIGS. 7B and 7C. This is a light distribution pattern irradiated to D (see FIG. 6). The convex light distribution pattern P1 is provided at an angle of approximately 45 ° obliquely downward to the inside of the vehicle from a point below the vertical cut-off line CL4, and the oblique cut-off line CL2 of the low beam light distribution pattern LP. It almost coincides with the slope of. This is especially true in the case of the left vehicle headlamp. Thereby, there is no sense of incongruity when the convex portion light distribution pattern P1 is applied to the dark portion D of the low beam light distribution pattern LP.

  Here, as described above, the ADB light distribution pattern PL irradiated from the first lamp unit of the left vehicle headlamp is, as shown in FIG. 8, the first of the right vehicle headlamp 1. The ADB light distribution pattern P shown in FIGS. 6, 7 </ b> A, and 7 </ b> C irradiated from the lamp unit 3 is symmetric (inverted horizontally). For this purpose, a vertical cut-off line CL4 is provided on the inner side (right side) of the left side of the ADB light distribution pattern PL. Moreover, it has the convex part light distribution pattern PL1 which protrudes inward (right side) of a vehicle from the lower part of the said vertical cut-off line CL4 of the said ADB light distribution pattern PL of the left side. An inclination angle of a line inclined from the lower part of the vertical cut-off line CL4 of the convex portion light distribution pattern PL1 to the inner side (right side) of the vehicle substantially coincides with an inclination angle of the oblique cut-off line CL2 of the low beam light distribution pattern LP. .

  The heat sink member 34 radiates heat generated in the semiconductor light source 30 to the outside. The semiconductor light source 30 is attached to the heat sink member 34.

  The holder 35 holds the reflector 31, the projection lens 32, the shade 33, and the heat sink member 34. The holder 35 and the heat sink member 34 may be combined as an integral structure.

(Description of the second lamp unit 2)
As shown in FIG. 4, the second lamp unit 2 is a projector type lamp unit. The second lamp unit 2 includes a semiconductor light source 20, a reflector 21, a projection lens 22, a shade 23, a heat sink member 24, and a holder 25 in substantially the same manner as the first lamp unit 3. ing.

  The second lamp unit 2 irradiates the low beam light distribution pattern LP forward of the vehicle. Note that the low beam light distribution pattern LP shown in FIGS. 7B and 7C is emitted from the second lamp unit 2 of the vehicle headlamp 1 on the right side. The low beam light distribution pattern irradiated from the second lamp unit of the left vehicle headlamp is shown in FIGS. 7B and 7C (C) irradiated from the second lamp unit 2 of the right vehicle headlamp 1. The light distribution pattern is substantially the same as the low beam light distribution pattern LP shown in FIG.

  The semiconductor-type light source 20 is a self-luminous semiconductor-type light source such as an LED, an OEL, or an OLED (organic EL). The semiconductor light source 20 is attached to the heat sink member 24. The light emitting surface of the semiconductor-type light source 20 is upward.

  The reflector 21 is provided with a reflection surface 210 formed of an elliptical reflection surface (a reflection surface made of a free-form surface having an ellipse as a base (basic or reference) or a reflection surface made of a spheroid). The reflective surface 210 has a first reference focus (not shown), a second reference focus (not shown), and a reference optical axis. The light emitting surface of the semiconductor light source 20 is located at or near the first reference focus. The reflection surface 210 reflects light from the light emitting surface of the semiconductor light source 20 toward the shade 23 and the projection lens 22. The reflector 21 is attached to the holder 25 directly or via the heat sink member 24.

  The projection lens 22 has a lens focal point (not shown) and a lens axis (not shown). The lens focal point coincides with or substantially coincides with the second reference focal point. The lens axis coincides with or substantially coincides with the reference optical axis. The projection lens 22 irradiates the front of the vehicle with the reflected light from the reflecting surface 210 and other than the reflected light shielded by the shade 23 as the low beam light distribution pattern LP. The projection lens 22 is attached to the holder 25.

  The shade 23 is disposed between the semiconductor-type light source 20 and the reflector 21 and the projection lens 22 and at or near the second reference focus, the lens focus. As shown in FIG. 4, the shade 23 is disposed below the semiconductor light source 20 (the reference optical axis and the lens axis). The shade 23 is attached to at least one of the reflector 21 and the holder 25.

  The upper edge of the shade 23 is provided with an upper horizontal edge, an oblique edge, and a lower horizontal edge. The upper horizontal edge forms the lower horizontal cut-off line CL1 of the low beam light distribution pattern LP. The oblique edge forms an oblique cutoff line CL2 of the low beam light distribution pattern LP. The lower horizontal edge forms the upper horizontal cutoff line CL3 of the low beam light distribution pattern LP. An elbow point E is formed at the intersection of the lower horizontal cutoff line CL1 and the oblique cutoff line CL2. The dark portion D is between the lower horizontal cutoff line CL1 and the oblique cutoff line CL2 and in the vicinity of the elbow point E.

  The heat sink member 24 radiates heat generated in the semiconductor light source 20 to the outside. The semiconductor light source 20 is attached to the heat sink member 24.

  The holder 25 holds the reflector 21, the projection lens 22, the shade 23, and the heat sink member 24. The holder 25 and the heat sink member 24 may be combined as an integral structure.

(Description of dimming control unit)
The dimming control unit is connected to the semiconductor light source 30 of the first lamp unit 3 and the semiconductor light source 20 of the second lamp unit 2. The dimming controller controls the semiconductor light sources 20 and 30 in order to gradually increase or decrease the light intensity (illuminance and luminance) of the low beam light distribution pattern LP and the ADB light distribution pattern P. Light control is performed. The dimming control of the semiconductor light sources 20 and 30 is, for example, binary pulse width modulation, and is performed by decreasing and increasing the duty ratio of the ON pulse width or the OFF pulse width.

(Description of vehicle headlamp system)
The vehicle headlamp system includes the vehicle headlamp 1, a detection unit 9 that detects the presence or absence of a preceding vehicle (not shown) or an oncoming vehicle (not shown), And a control unit 90 that outputs a control signal to the vehicle headlamp 1 based on a detection signal. The control unit 90 may also serve as the control device of the swivel device 91.

  The detection unit 9 detects the presence or situation of a preceding preceding vehicle or an oncoming vehicle, and outputs a detection signal to the control unit 90. The detection unit 9 uses, for example, a CCD camera.

  The control unit 90 includes the dimming control unit. The control unit 90 uses, for example, an ECU. The control unit 90 outputs a control signal to the semiconductor-type light sources 20 and 30 and the swivel device 91 of the vehicle headlamp 1 based on a detection signal from the detection unit 9.

  The vehicle headlamp 1 controls the turning on / off of the semiconductor light sources 20 and 30 and the swivel device 91 based on a control signal from the control unit 90 based on a detection signal from the detection unit 9. Drive stop control is performed.

(Description of the operation of the embodiment)
The vehicle headlamp 1 according to this embodiment is configured as described above, and the operation thereof will be described below.

  When the semiconductor light source 30 of the first lamp unit 3 is turned on, an ADB light distribution pattern P shown in FIG. When the semiconductor light source 20 of the second lamp unit 2 is turned on, the low beam light distribution pattern LP shown in FIG.

  When the ADB light distribution pattern P and the low beam light distribution pattern LP are combined (superimposed), the light distribution pattern shown in FIG. 7C is obtained. That is, the lower part of the ADB light distribution pattern P and the upper part on the opposite lane side (right side) of the low beam light distribution pattern LP overlap each other over a range of approximately 2 ° to 3 °.

  Further, as shown in FIG. 6, the convex portion light distribution pattern P1 of the ADB light distribution pattern P is applied to the dark portion D between the lower horizontal cut-off line CL1 and the oblique cut-off line CL2 in the low beam light distribution pattern LP. Yes.

  Here, the swivel device 91 is activated by the action of the vehicle headlamp system, and the ADB light distribution pattern P is changed depending on the presence of the preceding preceding vehicle and the oncoming vehicle and the situation. C) Move in the horizontal direction as shown by the solid arrows in the figure. In addition, due to the action of the vehicle headlamp system, the light intensity (illuminance, luminance) of the ADB light distribution pattern P and the low beam light distribution pattern LP varies depending on the presence and situation of the preceding preceding vehicle and the oncoming vehicle.

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

  The vehicle headlamp 1 according to this embodiment includes an ADB light distribution pattern P having a vertical cut-off line CL4 and a convex light distribution pattern P1 protruding from a part of the vertical cut-off line CL4 from the first lamp unit 3. Is irradiated to the front of the vehicle, and a low beam distribution pattern LP having a lower horizontal cut-off line CL1 and an oblique cut-off line CL2 is emitted from the second lamp unit 2 to the front of the vehicle. As a result, the convex portion light distribution pattern P1 is applied to the dark portion D between the lower horizontal cutoff line CL1 and the oblique cutoff line CL2 in the low beam light distribution pattern LP. Thereby, the light distribution pattern excellent in the visibility of a distant place can be obtained by the combination with the low beam light distribution pattern LP.

  Here, the inclination angle of the line inclined from the lower part of the vertical cut-off line CL4 of the ADB light distribution pattern PL irradiated from the first lamp unit of the left vehicle headlamp to the inside (right side) of the vehicle is shown in FIG. As shown, it almost coincides with the inclination angle of the oblique cutoff line CL2 of the low beam light distribution pattern LP. For this reason, when the left ADB light distribution pattern PL moves horizontally (swiveled) to the inside (right side) of the vehicle, there is little change in the road surface of the light distribution pattern, and the driver feels less uncomfortable.

  The vehicle headlamp 1 according to this embodiment can move the ADB light distribution pattern P emitted from the first lamp unit 3 in the left-right horizontal direction by the vehicle headlamp system. Thereby, the light distribution pattern according to the presence or absence and situation of the preceding preceding vehicle or the oncoming vehicle can be provided.

(Description of example other than embodiment)
In this embodiment, the vehicle headlamp 1 when the vehicle is on the left side will be described. However, the present invention can also be applied to a vehicle headlamp when the vehicle is on the right side.

  Further, in this embodiment, the first lamp unit 3 is rotated about the vertical axis VV by the swivel device 91. However, in the present invention, the second lamp unit 2 may be rotated about the vertical axis VV together with the first lamp unit 3 by the swivel device 91.

  Furthermore, in this embodiment, the semiconductor-type light source 30 of the first lamp unit 3 and the semiconductor-type light source 20 of the second lamp unit 2 are dimmed. However, in the present invention, only the semiconductor-type light source 30 of the first lamp unit 3 may be dimmed.

  Furthermore, in this embodiment, the low beam light distribution pattern LP irradiated from the second lamp unit 2 has a lower horizontal cutoff line CL1, an oblique cutoff line CL2, and an upper horizontal cutoff line CL3. However, in the present invention, a low beam light distribution pattern having a horizontal cutoff line and an oblique cutoff line may be used.

  Furthermore, in this embodiment, the first lamp unit 3 and the second lamp unit 2 are projector type lamp units. However, in the present invention, as the first lamp unit and the second lamp unit, a lamp unit other than the projector type lamp unit, for example, a direct lens type lamp unit, a reflector type lamp unit, a reflector lens type lamp unit, It may be.

DESCRIPTION OF SYMBOLS 1 Vehicle headlamp 2 2nd lamp unit 20 Semiconductor type light source 21 Reflector 210 Reflecting surface 22 Projection lens 23 Shade 24 Heat sink member 25 Holder 3 First lamp unit 30 Semiconductor type light source 31 Reflector 310 Reflecting surface 32 Projection lens 33 Shade 330 Vertical edge 331 Concave edge 332 Notch 34 Heat sink member 35 Holder 5 Lamp housing 50 Lamp chamber 51 First mounting member 52 Second mounting member 53, 54, 55 Optical axis adjustment device 9 Detection unit 90 Control unit 91 Swivel device 92 Casing 93 Rotation axis CL1 Lower horizontal cut-off line CL2 Oblique cut-off line CL3 Upper horizontal cut-off line CL4 Vertical cut-off line D Dark part E Elbow point HL-HR Horizontal line on the left and right of the screen LP Low beam Light pattern P, PL ADB light distribution pattern P1, PL1 protrusions light distribution pattern V-V and below the vertical line of the vertical axis VU-VD screen

Claims (2)

A first lamp unit for irradiating the front of the vehicle with a light distribution pattern having a vertical cutoff line;
A second lamp unit for irradiating the front of the vehicle with a low beam light distribution pattern having a horizontal cutoff line and an oblique cutoff line;
With
The first lamp unit includes a shade,
The shade is
A vertical edge forming the vertical cutoff line of the light distribution pattern;
A convex portion provided at a part of the vertical edge and projecting from a part of the vertical cutoff line and irradiated to a part between the horizontal cutoff line and the oblique cutoff line of the low beam light distribution pattern. A concave edge forming a light distribution pattern;
Having
A vehicle headlamp characterized by that. A detection unit that detects the presence or situation of a preceding vehicle ahead or an oncoming vehicle and outputs a detection signal thereof;
A control unit that outputs a control signal according to a detection signal from the detection unit;
A swivel device that is operated by a control signal from the control unit to rotate at least the first lamp unit around a vertical axis;
The vehicle headlamp according to claim 1, further comprising:

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