JP4341536B2 - head lamp - Google Patents

Description

  The present invention relates to a headlamp. In particular, the present invention relates to a projector-type headlamp that is inexpensive to manufacture and that can accurately switch between a low beam and a high beam.

  In a conventional projector-type headlamp, a desired light distribution pattern is obtained by shielding a part of light from a light source reflected by a reflecting surface of a reflector with a shade. For this reason, when the light distribution pattern for passing and the light distribution pattern for traveling are irradiated by one headlamp, the light distribution pattern is changed by moving the shade by a solenoid or the like. However, if the shade is moved only by a switching means such as a solenoid, the position accuracy of the shade may be lowered. If the accuracy when the shade is moved is so low, the light distribution pattern may not be as designed, and in this case, the light emitted from the headlamp may become glare. It was. Therefore, some conventional headlamps use a switching means such as a solenoid and another shade operating member. For example, in Patent Document 1, the position of the shade is switched by a solenoid serving as a shade switching means and a spring member. Thereby, since the position accuracy at the time of moving a shade improves, the accuracy of a light distribution pattern can be improved.

JP 2003-59311 A

  However, in the headlamp configured as described above, there are two types of light distribution patterns at the maximum. For this reason, when three or more kinds of light distribution patterns are required for the headlamp having the above-described configuration, a solenoid that stops at three positions is used or a plurality of headlamps are required. However, when a solenoid that stops at three positions is used, the structure of the solenoid is complicated, which tends to be expensive. When a plurality of headlamps are used, the number of parts increases and the cost tends to increase. For these reasons, it has been difficult to easily obtain three or more types of light distribution patterns.

  The present invention has been made in view of the above, and an object of the present invention is to provide a headlamp capable of obtaining three types of light distribution patterns at a low manufacturing cost.

  In order to solve the above-described problems and achieve the object, a headlamp according to the present invention includes a light source, a reflector having a reflection surface based on an ellipse, and one of the light from the light source reflected by the reflection surface. A plurality of shades that form different light distribution patterns by shielding a portion, and the plurality of shades includes a first shade and a second shade, and the first shade is A first operating part that switches the first shade between a first shade first position and a first shade second position; and a first operating part that switches the first shade between a first shade second position and a first shade third position. The second shade is configured to be operable by a driving means having two operating portions, and the first shade is moved by the driving means. When the mode is switched between the second shade position and the first shade third position, the second shade first position and the second shade second position are configured to be operable in conjunction with the operation of the first shade. The first operating part and the second operating part are provided so as to be independently operable, and the light distribution pattern is such that the first shade is located at the first shade first position. When the second shade is located at the second shade first position, a light distribution pattern for passing is formed, the first shade is located at the second shade first position, and the second shade is the second shade first. When the first shade is located at the first position, the light distribution pattern for high-speed running is obtained, and when the first shade is located at the first shade third position and the second shade is located at the second shade second position. Characterized in that a traveling light distribution pattern.

  In the present invention, the shade is formed by the first shade and the second shade, the first shade is switched to three positions by the driving means, and the second shade is switched to two positions in conjunction with the first shade. Is formed. In this way, the first shade is formed so as to be switched to three positions, and the second shade is formed so as to be switched to two positions in conjunction with the first shade, whereby the first shade and the second shade are formed. The three types of light distribution patterns, the passing light distribution pattern, the high-speed traveling light distribution pattern, and the traveling light distribution pattern, can be formed according to the balance of the positional relationships. In this way, since the first shade is operated by the driving means and the second shade is operated in conjunction with the first shade, three types of light distribution patterns can be formed. Three types of light distribution patterns can be formed without using a plurality of headlamps. As a result, three types of light distribution patterns can be obtained at a low manufacturing cost.

  In the headlamp according to the present invention, the first shade can be switched to the first shade first position, the first shade second position, and the first shade third position by rotating. The second shade is formed so as to be switched between the second shade first position and the second shade second position by rotating, and the first shade and the second shade. The shade is characterized in that it is formed so as to be able to rotate independently about the same rotation axis.

  In the present invention, the first shade and the second shade are formed so as to be able to be switched by rotating, and further, the first shade and the second shade are rotated about the same rotation axis. The relative positional accuracy when rotating can be improved. In addition, since the first shade and the second shade are formed so as to be independently rotatable, it is possible to reduce the influence received when the other shades rotate, and the accuracy when the shade rotates is improved. Improvements can be made. As a result, irradiation can be performed with a highly accurate light distribution pattern.

  In the headlamp according to the present invention, the driving unit includes a first driving unit having the first operating unit and a second driving unit having the second operating unit, and the first driving unit The second driving means is provided so as to be operable independently of each other.

  In the present invention, since the driving means is formed by the first driving means and the second driving means, two different types of driving means can be used, so that the driving means more suitable for the operating situation can be obtained. it can. That is, the first operating part operates only the first shade, but the second operating part operates both the first shade and the second shade at the same time. Thereby, the load at the time of an operation | movement differs between the 1st operation part and the 2nd operation part, and the load at the time of an operation | movement is larger than the load of the 2nd operation part than the 1st operation part. For this reason, the first operating part does not require a larger output than the second operating part, but the first operating part and the second operating part can be easily formed by forming the driving means from the first driving means and the second driving means. The output from the operating part can be made different. As a result, it is possible to suppress the output of the driving means from becoming unnecessarily large, and the driving means having suitable performance can be used, so that the manufacturing cost can be suppressed. As a result, the manufacturing cost can be further reduced. Further, since the first operating part does not require a larger output than the second operating part, the first driving means having the first operating part has a smaller output than the second driving means having the second operating part. Thus, the first drive means can be reduced in size and weight. As a result, the headlamp can be reduced in size and weight. Further, when the first shade is positioned at the first shade third position, only the second driving means has to be operated, so that no load acts on the first driving means. Thereby, the durability of the first drive means can be improved. As a result, it is possible to improve the durability when the shade is operated.

  In the headlamp according to the present invention, an interlocking portion is formed in the first shade, an interlocking portion abutting portion is formed in the second shade, and the second shade is When the first shade is actuated, the interlocking part is actuated by contacting the interlocking part abutting part.

  In this invention, when the second shade is interlocked with the movement of the first shade, the interlocking portion formed on the first shade abuts on the interlocking portion abutting portion formed on the second shade, so that the second shade Is working. Thereby, it is not necessary to make a complicated structure when the second shade is interlocked with the operation of the first shade, and the second shade can be easily interlocked with the operation of the first shade. As a result, the manufacturing cost can be further reduced.

  The headlamp according to the present invention has an effect that three kinds of light distribution patterns can be obtained at a low manufacturing cost.

  Hereinafter, embodiments of a headlamp according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same. In the following description, the front, rear, left side, right side, upper side, and lower side of a vehicle equipped with the headlamp of the present invention will be described as front, rear, left side, right side, upper side, and lower side in the headlamp. . Furthermore, in the following description, a headlamp that is installed in an automobile traveling on a left-handed road will be described.

  FIG. 1 is a cross-sectional view of a headlamp according to an embodiment of the present invention. The headlamp 1 shown in the figure includes a reflector 10, a discharge bulb 13 as a light source, a condenser lens 15 provided in front of the reflector 10 and irradiating reflected light from the reflector 10 in a predetermined direction, and a discharge bulb. 13 and the condensing lens 15 are formed of a first shade 21 and a second shade 41, and a frame 16 for fixing them together. The first shade 21 and the second shade 41 are both attached to a shade frame 70 so as to be rotatable. Further, a solenoid 80 serving as a driving means is provided on the shade frame 70 with the first shade 21 and the second shade. The shade frame 70 is fixed to the frame 16.

  A reflective surface 11 is formed on the inner surface of the reflector 10 by aluminum vapor deposition or the like. Further, an insertion hole 12 for the discharge bulb 13 is formed near the rear end of the reflector 10, and the discharge bulb 13 is inserted through the insertion hole 12 and fixed to the reflector 10. The discharge bulb 13 is connected to a bulb socket (not shown) that is electrically connected to a power source (not shown).

  The shape of the reflecting surface 11 has two focal points of a first focal point F1 and a second focal point F2 on a central line (optical axis) 5 and is based on a spheroid having the central line 5 as a central axis. It has become a part of. The light emitting part 14 of the discharge bulb 13 is located in the vicinity of the first focus F1. Near the second focal point F2, when the second shade 41 is located at a second shade first position, which will be described later, the vicinity of the upper end of the second shade 41 is located. Thus, the second shade 41 is in the second position. When located at the shade first position, the position of the second shade 41 in the front-rear direction is substantially the same position as the second focal point F2. The first focal point F1 and the second focal point F2 are optical reference points that are the reference for determining the shape of the reflecting surface 11.

  The first shade 21 is formed of a front first shade 22 and a rear first shade 23, and the first shade 21 is positioned at a first shade first position described later. The first shade 21 is in the vicinity of the second shade 41 located at the second shade first position as described above, and the front first shade 22 is the front side of the second shade 41 and the rear first shade 23. Is located on the rear side of the second shade 41. That is, the second shade 41 is located between the front first shade 22 and the rear first shade 23 in the front-rear direction.

  A frame 16 is provided in front of the reflector 10, and a condensing lens 15 is provided at the front end thereof, that is, in front of the second focal point F2. The condenser lens 15 is an aspherical lens and is made of a transparent material such as glass. The shape is a substantially circular convex lens shape, and is provided with the convex side facing forward.

  FIG. 2 is a cross-sectional view taken along the line AA of FIG. 3 is a BB arrow view of FIG. FIG. 4 is a perspective view of the first shade, the second shade, and the solenoid. As described above, the first shade 21 is formed of the front first shade 22 and the rear first shade 23, and the front first shade 22 and the rear first shade 23 are both substantially rectangular plates. And is fixed at both ends in the left-right direction. At that time, both end portions of the front first shade 22 are bent so as to have a step on the rear side, and this portion is fixed to the rear first shade 23, so the front first shade 22 and the rear first shade A space is formed between the two. Similarly, the second shade 41 is formed in a substantially rectangular plate shape, and the second shade 41 is positioned in a space between the front first shade 22 and the rear first shade 23. Is provided.

  A rotating shaft 90 is fixed to the shade frame 70, and the first shade 21 and the second shade 41 are attached to the rotating shaft 90 so as to be rotatable. Specifically, the rotating shaft 90 is fixed to the shade frame 70 in a direction extending in the left-right direction in the headlamp 1. The first shade 21 is formed with a first shade bearing portion 24 on the front side of the front first shade 22 near both ends in the left-right direction. For this reason, the first shade bearing portion 24 is provided at two locations of the first shade 21. Similarly, second shade bearing portions 42 are formed on the second shade 41 in two locations near both ends in the left-right direction, facing forward.

  The second shade bearing portion 42 is provided from the lower part of the second shade 41 toward the front, and the front first shade 22 is located in front of the second shade 41. For this reason, a notch 25 is formed in a portion corresponding to the portion where the second shade bearing portion 42 is located in the left and right direction and the vertical direction in the front first shade 22. The notch 25 is notched upward from the lower end at two locations corresponding to the second shade bearing portion 42. The second shade bearing portion 42 is provided so as to protrude forward from the cutout portion 25. Accordingly, the second shade bearing portion 42 is positioned in front of the front first shade 22. The portion facing the notch 25 on the surface of the second shade bearing portion 42 protruding forward from the lower side of the notch 25 of the first shade 21 is the interlocking portion contact portion. The surface of the cutout portion 25 facing downward is formed as the interlocking portion 26. The surface facing the interlocking portion contact portion 43.

  The first shade bearing part 24 is also provided from the lower part of the first shade 21 toward the front, and the first shade bearing part 24 and the second shade bearing part 42 are slightly larger than the rotating shaft 90. A hole (not shown) is formed. This hole is opened in a direction penetrating in the left-right direction, and when the second shade 41 is located between the front first shade 22 and the rear first shade 23 as described above, the up-down direction and the front-back direction It is formed so that the directions are almost the same position. Thereby, the said rotating shaft 90 can penetrate both the holes of the 1st shade bearing part 24 and the 2nd shade bearing part 42, and this rotating shaft 90 has penetrated both these holes. Further, the shade frame 70 has a side wall portion 71 whose both ends in the left-right direction are bent forward, and the rotation shaft 90 is located between the side wall portions 71, and the rotation shaft 90 is located on the side wall portion 71. The both ends of 90 are fixed to the shade frame 70. Thereby, the 1st shade 21 and the 2nd shade 41 are attached so that rotation with respect to the shade frame 70 centering | focusing on the rotating shaft 90 is possible.

  Moreover, the position control part 72 is provided in the inner side of each of the two side wall parts 71 in the left-right direction. That is, the position restricting portions 72 are provided at two locations, and the distance between the two position restricting portions 72 in the left-right direction is slightly wider than the width in the left-right direction of the two first shade bearing portions 24. Have. The position restricting portion 72 is also formed with a hole (not shown) that is slightly larger than the rotating shaft 90, and the rotating shaft 90 fixed to the shade frame 70 also penetrates the hole of the position restricting portion 72. . The two first shade bearing portions 24 are positioned between the two position restricting portions 72. For this reason, since the 1st shade bearing part 24 does not move to the axial direction of the rotating shaft 90, the position of the axial direction of the rotating shaft 90 or the left-right direction of the 1st shade 21 is regulated by this.

  Further, a first shade spring 61 and a second shade spring 62 are fixed to the rotating shaft 90, and the upper end portion of the first shade 21 is placed in the first shade 21 by the first shade spring 61. An urging force is applied in a rotational direction that is inclined forward. Similarly, the second shade 41 is applied with an urging force by a second shade spring 62 in a rotational direction in which the upper end portion of the second shade 41 is inclined forward. A first shade pressing portion 27 is located below the first shade 21. The first shade pressing portion 27 has a plate-like shape and protrudes forward, and is formed so that the plane of the plate faces in the vertical direction, and the lower surface is formed as a biasing surface 28.

  The solenoid 80 is provided below the first shade pressing portion 27, and the solenoid 80 is provided with a first solenoid 81 serving as a first driving means and a second solenoid 85 serving as a second driving means. . Both the first solenoid 81 and the second solenoid 85 are fixed to the shade frame 70. The first solenoid 81 has a first plunger 82 serving as a first operating portion. The first plunger 82 protrudes above the first solenoid 81 and is provided so as to be extendable in the vertical direction. Similarly, the 2nd solenoid 85 has the 2nd plunger 86 used as the 2nd operation part, the 2nd plunger 86 protrudes above the 2nd solenoid 85, and is provided so that expansion and contraction is possible in the up-and-down direction.

  The first solenoid 81 and the second solenoid 85 are different in size, and the second solenoid 85 is formed in a size larger than the first solenoid 81. For this reason, the first plunger 82 and the second plunger 86 have different expansion / contraction strokes, and the stroke of the second plunger 86 is larger than the stroke of the first plunger 82. The first solenoid 81 and the second solenoid 85 formed in this way are arranged so that the vertical heights of the respective tip portions of the first plunger 82 and the second plunger 86 in the contracted state are the same. It is fixed to the shade frame 70 side by side in the direction. For this reason, when the first plunger 82 and the second plunger 86 extend, they both extend upward, and their strokes are different. Therefore, the second plunger 86 is more upward than the first plunger 82. extend.

  FIG. 5 is a detailed view of part C of FIG. An upper edge portion of the first shade 21 is provided with a passing edge 31 that forms a cut-off line 101 of a passing light distribution pattern 100 to be described later when the headlamp 1 is turned on. A high-speed running edge 51 that forms a cut-off line 111 of a high-speed running light distribution pattern 110 (described later) when the headlamp 1 is turned on is provided at the upper end portion. The passing edge 31 is formed in the same shape on the front first shade 22 and the rear first shade 23. The passing edge 31 is different in height in the vertical direction from the vicinity of the central portion in the left-right direction, and the portion located in the left side direction of the automobile is higher than the portion located in the right direction. ing. In other words, the traveling lane side passing edge 32 positioned on the traveling lane side is positioned higher than the opposing lane side passing edge 33 positioned on the facing lane. Thus, the traveling lane side passing edge 32 and the opposite lane side passing edge 33 having a step in the vertical direction are located near the center of the passing edge 31 in the left-right direction, and the traveling lane side passing edge. 32 and the opposite lane side passing edge 33 are connected by a passing edge inclined portion 34 formed in an oblique direction.

  Similarly to the passing edge 31, the high-speed running edge 51 provided at the upper end portion of the second shade 41 is different in height in the vertical direction from the vicinity of the central portion in the left-right direction. The portion located in the direction is higher than the portion located in the right direction. In other words, the traveling lane side high speed traveling edge 52 located on the traveling lane side is located above the opposing lane side high speed traveling edge 53 located on the opposing lane side, and the traveling lane side The high-speed traveling edge 52 and the opposite lane side high-speed traveling edge 53 are connected by a high-speed traveling edge inclined portion 54 that is located in the vicinity of the center in the left-right direction of the high-speed traveling edge 51 and is formed in an oblique direction. . Further, the step between the traveling lane side high speed traveling edge 52 and the opposite lane side high speed traveling edge 53 is smaller than the level difference between the traveling lane side passing edge 32 and the opposing lane side passing edge 33.

  The headlamp 1 according to this embodiment is configured as described above, and the operation thereof will be described below. When the headlamp 1 irradiates the passing beam, the solenoid 80 is operated so that the first plunger 82 of the first solenoid 81 and the second plunger 86 of the second solenoid 85 contract together. In a state where the first plunger 82 of the first solenoid 81 and the second plunger 86 of the second solenoid 85 are both contracted, the first plunger 82 and the second plunger 86 are in the vertical direction of the tip portion as described above. The positions are formed to be the same position.

  FIG. 6 is a cross-sectional view taken along the line DD of FIG. 2 and shows a state during irradiation of the passing beam. Further, the first shade 21 and the second shade 41 are applied with an urging force in the above-described rotation direction by the first shade spring 61 and the second shade spring 62, respectively. Therefore, the first shade 21 has a passing edge 31 at the top, the second shade 41 has a high-speed running edge 51 at the top, and each of the first shade 21 and the second shade 41 has a shape. Are formed along the vertical direction, and are arranged almost in parallel. This state of the first shade 21 is the first shade first position, and this state of the second shade 41 is the second shade first position. In this state, the first plunger 82 of the first solenoid 81 and the second plunger 86 of the second solenoid 85 are both contracted. In this state, the first plunger 82 and the second plunger 86 in the above state do not apply an urging force to the urging surface 28 of the first shade pressing portion 27 formed on the first shade 21. It is in contact or away from the biasing surface 28. Further, in the second shade 41 in this state, the high-speed traveling edge 51 located at the upper end portion is located on the second focus F2 or in the vicinity of the second focus F2, and the first shade 21 is located at the upper end portion. The passing edge 31 is located in front of and behind the second focal point F2 (see FIG. 1).

  Further, in a state where the first shade 21 is located at the first shade first position and the second shade 41 is located at the second shade first position, the passing edge 31 formed on the first shade 21 is All are located above the high-speed running edge 51 formed in the second shade 41 (see FIG. 5). In this state, when the headlamp 1 is turned on, first, the light emitting unit 14 in the discharge bulb 13 is turned on. When the light emitting unit 14 is turned on, a part of the light from the light emitting unit 14 is directed toward the reflecting surface 11 of the reflector 10 and reflected by the reflecting surface 11. The shape of the reflecting surface 11 is formed in a part of a shape based on a rotation ellipse having the first focal point F1 and the second focal point F2 as optical reference points, and is therefore located near the first focal point F1. When the light from the light emitting unit 14 is reflected by the reflecting surface 11, the reflected light travels in the direction of the second focal point F2.

  Further, since the reflecting surface 11 is formed based on the ellipse as described above, the light reflected by the reflecting surface 11 intersects at the second focal point F2. For example, light reflected by the upper half portion of the reflecting surface 11 is reflected toward the lower direction, and light reflected by the lower half portion of the reflecting surface 11 is reflected toward the upper direction. Of the light, the light traveling in the direction of the second focal point F2 after reflection intersects when passing through the second focal point F2. Thus, after passing through the second focal point F2, the light reflected by the upper half portion of the reflecting surface 11 proceeds in the lower direction, and the light reflected by the lower half portion of the reflecting surface 11 proceeds in the upper direction. .

  Here, the 2nd shade 41 is provided in the 2nd focus F2 vicinity, and also the 1st shade 21 is provided in the front and back. The first shade 21 and the second shade 41 are provided with a passing edge 31 or a high-speed running edge 51 at the upper end portion, and the passing edge 31 and the high-speed running edge 51 are positioned near the second focal point F2. Therefore, most of the first shade 21 and the second shade 41 are located below the second focal point F2. For this reason, the light reflected by the lower half portion of the reflecting surface 11 is blocked by the first shade 21 or the second shade 41.

  When a part of the light reflected by the reflecting surface 11 is blocked by the first shade 21 or the second shade 41 as described above, the passing edge 31 is above the high-speed running edge 51 as described above. Therefore, the light reflected by the reflecting surface 11 is blocked in a shape along the shape of the passing edge 31 at the boundary with the portion where the light is blocked. At that time, since the passing edge 31 is located slightly forward and rearward of the second focus F2, the boundary portion thereof is slightly blurred. The first shade 21 is formed by a front first shade 22 and a rear first shade 23 positioned before and after the second focal point F2, and a passing edge 31 is formed by the front first shade 22 and the rear first shade. 23, the light shielding by the first shade 21 has an achromatic action. For this reason, coloring to the boundary part of the light shielded by the first shade 21 is suppressed.

  The light reflected by the reflecting surface 11 is blocked in this way and then travels toward the condenser lens 15. The light reflected by the reflecting surface 11 travels to the second focal point F2 while condensing to the second focal point F2, and proceeds in the direction of the condensing lens 15 while diffusing after passing through the second focal point F2. Then, when the light reaches the condensing lens 15 and passes through the condensing lens 15, the direction of the light is changed to irradiate the front as substantially parallel light.

  FIG. 7 is a diagram showing a light distribution pattern of the passing beam. The light reflected by the reflecting surface 11 is directed to the front of the condenser lens 15 because only the light without the first shade 21 or the second shade 41 is directed toward the condenser lens 15 and is emitted forward from the condenser lens 15. The irradiated light is irradiated in a shape opposite to the shape of the first shade 21 or the second shade 41. Further, since the irradiation light is shielded by the shape of the passing edge 31 as described above, the irradiation light is irradiated in the shape opposite to the shape of the first shade 21. That is, the irradiation light irradiates generally below the HH line that is the center in the vertical direction in front of the automobile, so the light distribution pattern is substantially below the HH line, and the left side of the automobile, that is, the traveling lane side. Only slightly above the HH line is irradiated. By irradiating the irradiation light in this range, the irradiation light of the headlamp 1 becomes a passing beam, so that the light distribution pattern becomes a passing light distribution pattern 100.

  The shape of the upper part of the light distribution pattern 100 for passing, that is, the cutoff line 101, is the opposite lane side horizontal cutoff line 102 which is the right side part of the cutoff line 101, and the traveling lane side horizontal cutoff line 103 which is the left side part of the cutoff line 101. It is formed lower than. The traveling lane side horizontal cut-off line 103 is located slightly above the HH line. In this way, the traveling lane side horizontal cutoff line 103 and the opposite lane side horizontal cutoff line 102 having a step in the vertical direction are located between them and are connected by the inclined cutoff line 104 formed to be inclined in the oblique direction. . The inclined cutoff line 104 corresponds to the passing edge inclined portion 34. Further, the inclined cut-off line 104 is located on the VV line, which is the center in the left-right direction in front of the automobile.

  When the headlamp 1 irradiates the passing beam, both the first plunger 82 of the first solenoid 81 and the second plunger 86 of the second solenoid 85 are contracted, and the first shade 21 is moved to the first shade first. When the second shade 41 is positioned at the second shade first position, the light distribution pattern becomes the passing light distribution pattern 100 as described above. Further, in the cut-off line 101 of the passing light distribution pattern 100, the light shielding by the passing edge 31 is blocked in a state where the boundary portion is slightly blurred, so that the cut-off line 101 is also slightly blurred. Further, since the front first shade 22 and the rear first shade 23 are achromatic, coloring to the cut-off line 101 is suppressed.

  In such a light distribution pattern 100 for passing, the left side of the VV line irradiates slightly above the HH line, and the right side is separated downward from the HH line. The passing beam is not irradiated near the HH line on the right side of the line. Even in the case where the right lane is an oncoming lane, in the passing light distribution pattern 100, the oncoming lane near the center in the vertical direction is not irradiated with the passing beam in this way. It does not illuminate near the driver's seat and does not shine against oncoming vehicles. Further, in the passing light distribution pattern 100, only the traveling lane side horizontal cut-off line 103 irradiates slightly above the H-H line, so that it does not irradiate the door mirror of the preceding vehicle, and the passing beam is ahead. There is no glare against the car.

  FIG. 8 is a cross-sectional view taken along the line DD of FIG. 2 and shows a state at the time of irradiation with a high-speed traveling beam. When the headlamp 1 irradiates the high-speed traveling beam, the second solenoid 85 is not operated, only the first solenoid 81 is operated, and only the first plunger 82 is extended upward. As a result, the biasing surface 28 of the first shade pressing portion 27 provided in the first shade 21 is pushed upward by the first plunger 82, and the first shade 21 is moved rearward to the first shade pressing portion 27. A biasing force in the direction of tilting is provided. When an urging force in this direction is applied to the first shade pressing portion 27, the first shade 21 is inclined in the direction in which the first shade 21 is tilted backward as described above about the rotation shaft 90. Rotate. This rotation is performed until the first plunger 82 is extended, and when the first plunger 82 is extended, the first shade 21 is moved in the direction opposite to the rotation direction by the urging force of the first plunger 82. Since the urging force is applied by the one-shade spring 61, the rotation of the first shade 21 stops when the first plunger 82 is fully extended.

  When the first shade 21 rotates in this way, the interlocking portion 26 formed in the notch 25 of the first shade 21 and the interlocking portion contact formed in the second shade bearing portion 42 of the second shade 41. In the state where the first plunger 82 is fully extended and the rotation of the first shade 21 is stopped, the interlocking portion 26 and the interlocking portion abutting portion 43 are not in contact with each other and are slightly separated from each other. It becomes a state. Further, when only the first solenoid 81 is operated and only the first plunger 82 extends upward and the first shade 21 rotates in the above direction, the second plunger 86 of the second solenoid 85 is Then, the first shade pressing portion 27 is separated from the urging surface 28. Further, when the first shade 21 rotates and the first shade 21 tilts rearward in this way, the upper end portion of the first shade 21, that is, the passing edge 31 changes in height in the vertical direction. The edge 31 moves downward. This state of the first shade 21 is the first shade second position. Further, when only the first solenoid 81 is operated and only the first plunger 82 is extended upward, the second shade 41 does not rotate, so the second shade 41 is positioned at the second shade first position.

  FIG. 9 is a detailed view of a portion C in FIG. 2 and shows a state at the time of irradiation with a high-speed traveling beam. The detailed position of the first shade 21 in this state is such that all portions of the passing edge 31 are located below the high-speed running edge 51. Specifically, the step between the traveling lane side passing edge 32 and the opposite lane side passing edge 33 of the first shade 21 is different from the traveling lane side high speed traveling edge 52 and the opposite lane side high speed traveling of the second shade 41. Since the difference between the edge 53 and the edge 53 is larger, the traveling lane side passing edge 32 of the first shade 21 is positioned below the traveling lane side high speed traveling edge 52 of the second shade 41, thereby All parts are located below the high-speed running edge 51. Thus, the opposite lane side high speed traveling edge 53 of the second shade 41 when the first shade 21 is located at the first shade second position and the second shade 41 is located at the second shade first position is When the first shade 21 is located at the first shade first position, the position of the opposite lane side passing edge 33 of the first shade 21 and the position in the vertical direction are substantially the same.

  The step between the traveling lane side high speed traveling edge 52 and the opposite lane side high speed traveling edge 53 of the second shade 41 is different from the traveling lane side passing edge 32 and the opposing lane side passing edge 33 of the first shade 21. Therefore, the first shade 21 is the first shade second than the position in the vertical direction of the traveling lane side passing edge 32 when the first shade 21 is located at the first shade first position. When the second shade 41 is located at the second shade first position, the traveling lane side high speed traveling edge 52 of the second shade 41 is located below. Accordingly, when the first shade 21 is positioned at the first shade first position while the second shade 41 is positioned at the second shade first position, and when the first shade 21 is positioned at the first shade second position. When compared with the case where the opposite lane side of the upper part of the shade is compared, the opposite lane side passing edge 33 of the first shade 21 or the opposite lane side high speed traveling edge 53 of the second shade 41 is substantially the same height. Is located at.

  On the other hand, in the portion on the traveling lane side of the upper part of the shade, the first shade 21 is the first shade than the traveling lane side passing edge 32 when the first shade 21 is located at the first shade first position. The traveling lane side high-speed traveling edge 52 of the second shade 41 when positioned at the second position is positioned below. In other words, when the first shade 21 is located at the first shade second position, only the portion on the traveling lane side generally above the shade is compared with the case where the first shade 21 is located at the first shade first position. Will be located below.

  FIG. 10 is a diagram illustrating a light distribution pattern of a high-speed traveling beam. The light that is emitted from the light emitting unit 14 when the discharge bulb 13 is turned on is reflected by the reflecting surface 11 and travels in the direction of the second focal point F2 as described above. Of the light that travels in this direction, the reflected light is reflected. The light reflected by the lower half portion of the surface 11 is blocked by the second shade 41 or the first shade 21. At that time, since all the portions of the passing edge 31 are located below the high-speed running edge 51, the light reflected by the reflecting surface 11 is a boundary portion with the portion where the light is blocked. Is obstructed by a shape along the shape of the edge 51 for high-speed traveling. At that time, since the position in the front-rear direction of the high-speed running edge 51 is substantially the same as the second focal point F2, the boundary portion is blocked so that the brightness is clearly separated. Further, the light reflected by the reflecting surface 11 and having passed through the second focal point F2 is directed in the direction of the condensing lens 15 as in the case of passing the passing beam, and is substantially parallel when passing through the condensing lens 15. And illuminate the front. Since this irradiation light is shielded by the second shade 41, it is irradiated in a shape opposite to the shape of the second shade 41. Specifically, most of the irradiation light irradiates below the HH line in front of the automobile.

  Further, the first shade 21 is located at the first shade second position than the traveling lane side passing edge 32 of the passing edge 31 when the first shade 21 is located at the first shade first position. In this case, the traveling lane side high speed traveling edge 52 of the high speed traveling edge 51 is lower in the vertical direction, so the portion on the opposite lane side above the light distribution pattern is opposite to the passing light distribution pattern 100. It becomes higher than the lane side horizontal cut-off line 102. Further, when the first shade 21 is positioned at the first shade first position, the opposite lane side passing edge 33 of the passing edge 31 and the first shade 21 are positioned at the first shade second position. In this case, since the position in the vertical direction of the opposite lane side high speed traveling edge 53 of the high speed traveling edge 51 is substantially the same, the portion on the traveling lane side above the light distribution pattern is the light distribution pattern for passing. It becomes substantially the same position as 100 travel lane side horizontal cut-off line 103. By forming the light distribution pattern in this manner, the light distribution pattern when the first shade 21 is positioned at the first shade second position and the second shade 41 is positioned at the second shade first position is as follows. Thus, the light distribution pattern 110 for high speed running is obtained.

  The upper shape of the light distribution pattern 110 for high-speed travel, that is, the cut-off line 111 is similar to the cut-off line 101 of the light distribution pattern 100 for passing. Is also formed low. The traveling lane side horizontal cutoff line 113 is located slightly above the HH line. Furthermore, the driving lane side horizontal cut-off line 113 and the opposite lane side horizontal cut-off line 112 are formed to be inclined in an oblique direction corresponding to the high-speed driving edge inclined portion 54 and are the center in the left-right direction in front of the automobile. They are connected by an inclined cut-off line 114 located on the VV line.

  When the headlamp 1 irradiates the beam for high-speed travel, the first plunger 82 of the first solenoid 81 is extended and the second plunger 86 of the second solenoid 85 is contracted, so that the first shade 21 is the first shade 21. The second shade 41 is positioned at the second position of the shade, and the second shade 41 is positioned at the first position of the second shade. As a result, the light distribution pattern becomes the light distribution pattern 110 for high-speed traveling as described above. The cut-off line 111 of the high-speed running light distribution pattern 110 is also clear because the light shielding by the high-speed running edge 51 is shielded in a state where the boundary portion is clearly separated from light and dark. It becomes a state.

  In such a high-speed light distribution pattern 110, the oncoming lane side horizontal cut-off line 112 is positioned above the oncoming lane side horizontal cut-off line 102 of the passing light distribution pattern 100, so this portion is a passing beam. The high-speed traveling beam irradiates far away. For this reason, it becomes easy to visually recognize a distant place. Moreover, the opposite lane side horizontal cut-off line 112 of the light distribution pattern for high-speed traveling 110 irradiates above the same part of the passing light distribution pattern 100, and therefore, the opposite lane side is more irradiated than when the passing beam is irradiated. However, since the cut-off line 111 of the light distribution pattern 110 for high-speed traveling is clearly bright and dark, it does not become glare with respect to the oncoming vehicle. Further, the traveling lane side horizontal cut-off line 113 of the light distribution pattern 110 for high-speed traveling is almost the same height as the horizontal cut-off line 103 for the traveling lane side of the light distribution pattern 100 for passing, so the beam for high-speed traveling is the preceding vehicle. It will not be glare.

  FIG. 11 is a cross-sectional view taken along the line DD of FIG. 2 and shows a state during irradiation with a traveling beam. When the headlamp 1 irradiates the traveling beam, the second solenoid 85 is activated to extend the second plunger 86 upward. As a result, the biasing surface 28 of the first shade pressing portion 27 is pushed upward by the second plunger 86, and the first shade pressing portion 27 is attached to the first shade pressing portion 27 in the rotation direction in which the first shade 21 tilts backward. Power is applied, and the first shade 21 rotates in the direction in which the first shade 21 tilts backward with the rotation shaft 90 as the center of rotation, as in the case of irradiating the beam for high-speed traveling. The first shade 21 rotates until the second plunger 86 is fully extended, but the second plunger 86 has a longer stroke than the first plunger 82. For this reason, the rotation angle of the first shade 21 is large, and the first shade 21 is largely rotated in a direction inclined backward rather than the backward rotation when the high-speed traveling beam is irradiated. For this reason, when the first shade 21 rotates, the interlocking portion 26 formed in the notch 25 abuts on the interlocking portion abutting portion 43 of the second shade 41. The first shade 21 rotates even after the interlocking portion 26 comes into contact with the interlocking portion abutting portion 43, and the rotation of the first shade 21 stops when the second plunger 86 is fully extended.

  When the first shade 21 rotates and the interlocking portion 26 contacts the interlocking portion abutting portion 43, a biasing force is applied from the interlocking portion 26 to the interlocking portion abutting portion 43 by the rotation of the first shade 21. . This urging force is a force for rotating the second shade 41 in the direction in which the second shade 41 tilts backward with the rotation shaft 90 as the center of rotation. By abutting against the contact portion 43, the second shade 41 rotates in the same direction as the rotation direction of the first shade 21 together with the first shade 21. This rotation of the second shade 41 is stopped at the same time as the second plunger 86 is fully extended and the rotation of the first shade 21 is stopped.

  Further, when the first plunger 21 and the second shade 41 are rotated by the extension of the second plunger 86 and tilted backward, the upper end portions of the first shade 21 and the second shade 41, that is, passing each other. The vertical edge 31 and the high-speed running edge 51 change in height in the vertical direction, and both the passing edge 31 and the high-speed running edge 51 move downward. Further, the passing edge 31 is positioned below the high-speed traveling beam irradiation because the first shade 21 is greatly inclined rearward than during the high-speed traveling beam irradiation. Further, when the second shade 41 is located at the second shade first position, the high-speed running edge 51 located in the vicinity of the second focal point F2 causes the second shade 41 to tilt backward, It is located below the second focal point F2. As a result, both the passing edge 31 and the high-speed running edge 51 are positioned below the second focal point F2. This state of the first shade 21 is the first shade third position, and this state of the second shade 41 is the second shade second position. In this state, the first plunger 82 of the first solenoid 81 does not contact the first shade pressing portion 27 in the contracted state or the upward extended state, and the first shade 21 or the second shade 41 is rotated. Therefore, the first plunger 82 may be either in a contracted state or in an extended state.

  FIG. 12 is a diagram illustrating a light distribution pattern of a traveling beam. The discharge bulb 13 is turned on, and the light emitted from the light emitting unit 14 is reflected by the reflecting surface 11 and travels in the direction of the second focal point F2 as described above. Of this light, the light reflected by the lower half of the reflecting surface 11 is blocked by the first shade 21 or the second shade 41 when passing the low beam or the high speed beam. At the time of beam irradiation, both the first shade 21 and the second shade 41 are all located below the second focal point F2. Thereby, the light shielded by the first shade 21 and the second shade 41 is directed forward from the second focal point F2 when the passing beam irradiation or the high-speed traveling beam irradiation is performed. As described above, most of the light reflected by the reflecting surface 11 is directed to the condenser lens 15 without being blocked by the first shade 21 or the second shade 41, and passes through the condenser lens 15. Irradiates the front in the form of substantially parallel light. Since this irradiation light is hardly shielded by the first shade 21 and the second shade 41, it irradiates both above and below the HH line in front of the automobile.

  In the passing beam and the high-speed traveling beam, a part of the light reflected by the reflecting surface 11 is shielded by the first shade 21 and the second shade 41, so that the irradiation light that irradiates the front is almost under the front of the automobile. Although only on the half side, in the traveling beam, since the light reflected by the reflecting surface 11 is not shielded by the first shade 21 or the second shade 41, the irradiation light is not only on the lower half side in front of the automobile but also on the upper half side. Also irradiate. For this reason, the light distribution pattern has a form in which the upper side of the H-H line is added to the light distribution pattern for passing 100 or the light distribution pattern for high-speed traveling 110 as an irradiation range. By forming the light distribution pattern in this way, the light distribution pattern when the first shade 21 is positioned at the first shade third position and the second shade 41 is positioned at the second shade second position is as follows: A light distribution pattern 120 for travel is obtained. That is, when the headlamp 1 irradiates the traveling beam, the first shade 21 is positioned at the first shade third position by extending the second plunger 86 of the second solenoid 85, and the second shade 41. Is located at the second shade second position. Thereby, the light distribution pattern becomes the traveling light distribution pattern 120 as described above. In such a traveling light distribution pattern 120, the traveling beam can be irradiated far away because the traveling light distribution pattern 120 is irradiated above the HH line. Thereby, it becomes easy to visually recognize a distant place.

  The headlamp 1 described above includes the first shade 21 that forms the passing light distribution pattern 100 and the second shade 41 that forms the high-speed light distribution pattern 110. The first shade 21 and the second shade 41 are operated by a solenoid 80 having two plungers having different strokes, that is, a first plunger 82 and a second plunger 86, and the first shade 21 and the second shade 41 and The light distribution pattern is changed by the solenoid 80. That is, when both of the two plungers are shrunk, the irradiation light is changed to the passing light distribution pattern 100 by the first shade 21. In addition, when the first plunger 82, which is a short stroke plunger, is extended, the irradiation light is changed to the high-speed running light distribution pattern 110 by the second shade 41. Further, when the second plunger 86, which is a long stroke plunger, is extended, the irradiation light is made into the running light distribution pattern 120 without blocking the irradiation light by the first shade 21 and the second shade 41. Thereby, it can irradiate with 3 types of light distribution patterns, and since a 2 position stop solenoid can be used, manufacturing cost can be held down. As a result, three types of light distribution patterns can be obtained at a low manufacturing cost.

  Moreover, since the 1st shade 21 and the 2nd shade 41 rotate independently, respectively, even when each other shade rotates, it is not mutually influenced by the motion. Thereby, the optical positional accuracy of a shade can be improved and it can irradiate with a more precise light distribution pattern. As a result, it is possible to improve the visibility when irradiated, and to suppress glare to the outside such as an oncoming vehicle, so it is possible to improve safety when traveling by irradiating the outside.

  In addition, since the first plunger 82 and the second plunger 86 are respectively provided with the first solenoid 81 and the second solenoid 85 that are independent from each other, it is possible to use a driving unit that is more suitable for the work amount. That is, the first plunger 82 only rotates the first shade 21, but the second plunger 86 rotates the first shade 21 and the second shade 41 simultaneously. For this reason, when the first plunger 82 is operated, only a load due to the urging force of the first shade spring 61 is applied. However, when the second plunger 86 is operated, the first shade spring 61 is operated. The load due to the urging force and the load due to the urging force of the second shade spring 62 act. Accordingly, when the second plunger 86 is operated, a larger load is applied than when the first plunger 82 is operated. Therefore, the second plunger 86 requires a larger force than the first plunger 82 when operating. On the contrary, when the first plunger 82 is operated, it can be operated with a smaller output than when the second plunger 86 is operated.

  Therefore, by providing the solenoids 80 independently, the size can be changed between the first solenoid 81 having the first plunger 82 and the second solenoid 85 having the second plunger 86. The output and the output from the second plunger 86 can be made different from each other. Accordingly, it is possible to suppress the provision of the solenoid 80 having an output larger than necessary, and it is possible to use the solenoid 80 having a performance suitable for the work amount, so that the manufacturing cost can be suppressed. As a result, the manufacturing cost can be further reduced. Further, since the output of the first plunger 82 may be smaller than the output of the second plunger 86 in this way, the first solenoid 81 having the first plunger 82 outputs more than the second solenoid 85 having the second plunger 86. Can be reduced. Thereby, size reduction and weight reduction of the 1st solenoid 81 can be achieved. As a result, the headlamp 1 can be reduced in size and weight.

  Furthermore, when the first shade 21 is positioned at the first shade third position, only the second solenoid 85 needs to be operated, so that no load acts on the first solenoid 81. Thus, since the load on the first solenoid 81 can be reduced, the durability of the first solenoid 81 can be improved. As a result, it is possible to improve the durability in the case where the shade is structured to operate, and the high-quality headlamp 1 can be obtained.

  In addition, since it is possible to irradiate with three kinds of light distribution patterns using the two-position stop solenoid 80, it is possible to improve accuracy when irradiating with three light distribution patterns. That is, when irradiating with three or more light distribution patterns, if a solenoid 80 having three or more stop positions, such as a three-position stop solenoid 80, is used, there is a risk that accuracy when stopping in the middle is reduced. is there. Therefore, by providing a plurality of two-position stop solenoids 80 and irradiating with three types of light distribution patterns, the accuracy of all the light distribution patterns is improved. As a result, it is possible to improve the accuracy of the light distribution pattern when irradiating with three types of light distribution patterns.

  Further, both the first plunger 82 and the second plunger 86 rotate the first shade 21 by pushing the first shade pressing portion 27, and the second shade 41 is connected to the interlocking portion 26 of the first shade 21 and the second one. Since the second shade 41 rotates by contacting the interlocking portion contact portion 43 of the two shades 41, the relative positional accuracy between the first shade 21 and the second shade 41 can be easily improved. As a result, the first shade 21 and the second shade 41 can be easily aligned and assembled. As a result, the manufacturing cost can be more reliably reduced.

  Further, when the second shade 41 is interlocked with the movement of the first shade 21, the interlocking portion 26 formed on the first shade 21 abuts on the interlocking portion abutting portion 43 formed on the second shade 41. Thus, the second shade 41 is operating. Further, the interlocking portion 26 is formed on the surface facing the lower portion of the cutout portion 25 that is formed on the first shade 21 and protrudes the second shade bearing portion 42 of the second shade 41 forward. Has been. Further, the interlocking portion abutting portion 43 is formed in a portion of the second shade bearing portion 42 that faces upward and is opposed to the interlocking portion 26. Accordingly, there is no need to have a complicated structure when the second shade 41 is interlocked with the operation of the first shade 21, and the second shade 41 can be easily interlocked with the operation of the first shade 21. As a result, the manufacturing cost can be further reduced.

  Further, since the first shade 21 is formed by the front first shade 22 and the rear first shade 23 and the second shade 41 is provided between them, the light distribution pattern for passing by one headlamp 1 is provided. Even when irradiating with 100 and the light distribution pattern 110 for high speed travel, coloring of irradiation light can be suppressed. As a result, it is possible to achieve both good visibility and irradiation with a plurality of light distribution patterns without deteriorating the visibility when the headlamp 1 irradiates the outside.

  The first shade 21 is formed by the front first shade 22 and the rear first shade 23, but the first shade 21 may be formed by one sheet. Even when the first shade 21 is formed as a single piece, the second shade 41 can be rotated in conjunction with the rotation of the first shade 21 by providing the first shade pressing portion 27 and the interlocking portion 26. In addition, three types of light distribution patterns can be obtained with the two solenoids 80.

  Further, the solenoid 80 is not divided into the first solenoid 81 and the second solenoid 85, and a solenoid 80 having two plungers with different strokes may be used as one solenoid 80. If the strokes of the two plungers are different, only the first shade 21 can be rotated with a short stroke plunger, and the first shade 21 and the second shade 41 can be rotated with a long stroke plunger. Three types of light distribution patterns can be obtained.

  Further, as the driving means, a device other than the solenoid 80 may be used. For example, the first shade 21 and the second shade 41 may be rotated using a stepping motor. When rotating, the first shade 21 is directly rotated, and if the second shade 41 is structured to rotate in conjunction with the rotation of the first shade 21, three types of light distribution patterns are obtained. As long as the first shade 21 can be rotated, the type of driving means is not limited.

  In addition, the headlamp 1 of the embodiment uses the discharge bulb 13 as a light source, but the light source may be other than the discharge bulb 13 such as a halogen bulb or an incandescent bulb. Even when a light source other than the discharge bulb 13 is used, the degree of light shielding from the light source is changed by the first shade 21 and the second shade 41 by positioning the light emitting portion of the light source in the vicinity of the first focal point F1. And the above effects can be obtained.

  Further, in the above description, the headlamp 1 mounted on a vehicle traveling on a left-handed road is described. However, the headlamp 1 of the present invention is applied to a vehicle mounted on a vehicle traveling on a right-handed road. When equipped, the shape of the edge of each shade may be reversed. Thereby, since the shape of the cut-off line of the light distribution pattern is reversed left and right, the light distribution pattern is suitable for right-side traveling, and the above effect can be obtained even when traveling on a right-side traveling road.

  As described above, the headlamp according to the present invention is useful for a projector-type headlamp having a shade, and is particularly suitable for a case where a plurality of light distribution patterns are switched for irradiation.

It is sectional drawing of the headlamp which concerns on the Example of this invention. It is AA sectional drawing of FIG. It is a BB arrow line view of FIG. It is a perspective view of a 1st shade, a 2nd shade, and a solenoid. FIG. 3 is a detailed view of part C in FIG. 2. It is DD sectional drawing of FIG. 2, and is a figure which shows the state at the time of irradiation of the beam for passing. It is a figure which shows the light distribution pattern of the beam for passing. It is DD sectional drawing of FIG. 2, and is a figure which shows the state at the time of irradiation of the beam for high-speed driving | running | working. FIG. 3 is a detailed view of a part C in FIG. 2, illustrating a state at the time of irradiation with a high-speed traveling beam. It is a figure which shows the light distribution pattern of the beam for high-speed driving | running | working. It is DD sectional drawing of FIG. 2, and is a figure which shows the state at the time of irradiation of the beam for driving | running | working. It is a figure which shows the light distribution pattern of the beam for driving | running | working.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Headlamp 5 Centerline 10 Reflector 11 Reflecting surface 12 Insertion hole 13 Discharge bulb 14 Light emission part 15 Condensing lens 16 Frame 21 1st shade 22 Front part 1st shade 23 Rear part 1st shade 24 1st shade bearing part 25 Notch part 26 Interlocking portion 27 First shade pushing portion 28 Energizing surface 31 Passing edge 32 Driving lane side passing edge 33 Opposing lane side passing edge 34 Passing edge inclined portion 41 Second shade 42 Second shade bearing portion 43 Interlocking portion Contact portion 51 Edge for high-speed travel 52 Edge for high-speed travel on lane side 53 Edge for high-speed travel on opposite lane side 54 Edge inclined portion for high-speed travel 61 Spring for first shade 62 Spring for second shade 70 Shade frame 71 Side wall 72 Position restriction part 80 Solenoid 81 First solenoid 82 First Plunger 85 Second Solenoid 86 Second Plunger 90 Rotating Shaft 100 Passing Light Distribution Pattern 101 Cut-off Line 102 Opposite Lane Side Horizontal Cut-Off Line 103 Traveling Lane Side Horizontal Cut-Off Line 104 Inclined Cut Line 110 High-Speed Traveling Light Distribution Pattern 111 Cut-off line 112 Opposite lane side horizontal cut-off line 113 Travel lane-side horizontal cut-off line 114 Inclined cut line 120 Traveling light distribution pattern F1 First focus F2 Second focus

Claims (4)

A projector having a light source, a reflector having a reflection surface based on an ellipse, and a plurality of shades each forming a different light distribution pattern by shielding a part of light from the light source reflected by the reflection surface In the type of headlamp,
The plurality of shades are composed of a first shade and a second shade that are independently rotatable around the same rotation axis ,
The first shade is formed with a first shade pressing portion and an interlocking portion, and the first shade rotates about the rotation axis by applying a biasing force to the first shade pressing portion. According to the urging force which the 1st operation part of the drive means which has the 1st operation part and the 2nd operation part which are provided so that it can move and has a different expansion and contraction stroke gives to the 1st shade pushing part By rotating, the first shade is switched to the first shade first position and the first shade second position, and the second shade is rotated according to the urging force applied to the first shade pressing portion by the second operating portion. It is formed to be switchable between the second position and the first shade third position ,
The second shade is formed with an interlocking portion contact portion, and the second shade is in contact with the interlocking portion contact portion when the first shade rotates, wherein by rotating around the rotary shaft, the first shade the first shade and the previous SL first shade second position in response to the biasing force given to the interlocking abutting part from the interlocking portion is formed so as to be switched to the third position and the second shade first position and the second shade second position in conjunction with rotation of the first shade when switched,
The first operating part and the second operating part are provided so as to be independently operable,
The light distribution pattern is a passing light distribution pattern when the first shade is located at the first shade first position and the second shade is located at the second shade first position,
When the first shade is located at the first shade second position and the second shade is located at the second shade first position, a light distribution pattern for high speed running is obtained.
The headlamp according to claim 1, wherein when the first shade is located at the first shade third position and the second shade is located at the second shade second position, a travel light distribution pattern is obtained. The first shade is switched to the first shade first position when the first actuating part and the second actuating part of the driving means do not apply a biasing force to the first shade pushing part, and the first shade is switched to the first shade. The operating portion is switched to the first shade second position by applying a biasing force to the first shade pressing portion, and the second shade is applied to the first shade pressing portion by the second operating portion. It is formed to be switchable to the third position,
In the second shade, the first shade is switched to the first shade first position or the first shade second position, so that the interlock portion and the interlock portion abutting portion do not come into contact with each other. The second shade is switched to the first position, and the first shade is switched to the first shade third position, whereby the interlocking portion and the interlocking portion abutting portion come into contact with each other, and the interlocking portion contacts the interlocking portion. 2. The headlamp according to claim 1, wherein the headlamp is configured to be switchable to the second position of the second shade when an urging force is applied to the portion . The driving means comprises first driving means having the first operating part, and second driving means having the second operating part,
3. The headlamp according to claim 1, wherein the first driving unit and the second driving unit are provided so as to be independently operable. 4. Further, the first shade is applied with a biasing force by a first shade spring that applies a biasing force in a direction opposite to the rotation direction by the biasing force of the first operating portion.
The second shade is given a biasing force by a second shade spring that applies a biasing force in a direction opposite to the rotation direction by a biasing force given from the interlocking portion to the interlocking portion abutting portion. The headlamp according to any one of claims 1 to 3.

Images