JP2002289013A - Light fixture for use in vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light fixture that does not emit dazzling light to a vehicle in front, makes lighting distance in the opposite lane side longer and emits enough bright light to the moving direction of the vehicle when turning right or left and running in the corner. SOLUTION: A projector type light fixture 10 for use in vehicle comprises a light source 11, a reflecting surface 12 which reflects light from the light source toward the front, a projection lens 13 which focuses light from the light source and/or reflecting surface and a shutter 14 which shut off one portion of a light path arranged in the light path from the light source to projection lens. The light fixture 10 is constituted so that the shutter 14 is formed from a fixed part 15 arranged firmly and a movable part 16 which overlaps at least partially to the fixed part and which is sustained to be movable in the horizontal direction from a inserting position, and the light distribution pattern projected can be changed near the horizontal line by the movable part being moved to the fixed part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp used, for example, as a headlight or an auxiliary headlight provided at a front portion of an automobile.

[0002]

2. Description of the Related Art Conventionally, an automobile headlamp includes, for example, a light source, a main reflection surface for reflecting light from the light source toward the front, a projection lens for converging light from the light source or the main reflection surface, and a light source. And a shutter for cutoff arranged in the optical path from the lens to the projection lens.

According to the headlight having such a configuration, the light emitted from the light source is directly or reflected by the main reflection surface, enters the projection lens, and is focused by the projection lens, so that it is directed forward. And illuminates a predetermined range. At this time, since a part of the light incident on the projection lens is blocked by the shutter, a desired light distribution characteristic is obtained such that the irradiation distance is shortened on the opposite lane side so as not to give a dazzling light to the oncoming vehicle. It has become. For example, such an alignment characteristic is represented by a regulation line A indicated by oblique lines in FIG. 32, that is, a horizontal line on the right side (on the opposite lane side) from the center, and an upper edge extending leftward at an angle of 15 degrees from the horizontal position on the left side from the center. Regulated by
The orientation characteristic B is configured to fall within this regulation range.

[0004]

However, in such a headlight, since the orientation characteristics due to the cut-off described above are fixed, for example, when a vehicle runs in the right corner, the driver is required to be in front of the corner. Even if one wants to see the scene, since the front of the corner is on the opposite lane, the irradiation distance by the headlight is short, and a sufficiently bright view cannot be secured.

On the other hand, in order to extend the irradiation distance of the headlight on the opposite lane side, there are methods of turning the headlight itself upward and moving the entire shutter downward. In this case, the irradiation light to the preceding vehicle (especially, an automobile running ahead of the traveling lane during the overtaking lane) is increased. In this case, the mounting height of the headlight of the vehicle is generally lower than the mounting height of the side mirror. Therefore, when the amount of irradiation upward from the headlight increases, the irradiation light is reflected by the side mirror of the leading vehicle. As a result, the dazzling light for the driver of the preceding vehicle increases.
For this reason, when a preceding vehicle is detected and there is a preceding vehicle,
Although it is possible to prevent the headlights from illuminating upward, the overall equipment becomes expensive and traffic performance without a leading vehicle is rare, resulting in extremely low cost performance. Would.

In view of the above, according to the present invention, it is possible to increase the irradiation distance on the opposite lane side without giving a dazzling light to a preceding vehicle by a simple configuration, and to make a right or left turn or corner driving. It is an object of the present invention to provide a vehicular lamp capable of sometimes illuminating a vehicle with a sufficiently bright light in a traveling direction of the vehicle.

[0007]

According to a first aspect of the present invention, there is provided a light source, a reflecting surface for reflecting light from the light source toward the front, and a light from the light source or the reflecting surface. In a projector-type vehicular lamp including a projection lens to be focused and a shutter disposed in an optical path from the light source to the projection lens to block a part of the optical path, a fixed portion in which the shutter is fixedly disposed; A movable portion that is at least partially overlapped with the portion and that is supported so as to be movable in the lateral direction from the insertion position, and is projected by moving the movable portion with respect to the fixed portion. This is achieved by a vehicular lamp characterized by changing the shape of a light distribution pattern near a horizontal line.

Further, according to a second aspect of the present invention, there is provided a light source, a main reflection surface for reflecting light from the light source toward the front, and light from the light source and / or the main reflection surface. In a projector-type vehicular lamp including: a projection lens to be focused; and a shutter disposed in a main optical path from the light source and / or the main reflection surface to the projection lens to block a part of the main optical path, In addition, it further comprises at least a first and a second reflecting surface constituting a sub optical path for irradiating the light emitted from the light source forward, wherein the first reflecting surface allows the light of the main optical path to pass therethrough. A concave reflecting surface on the side of the light source having an opening or a notch, wherein the light source and / or
Or it is formed so as to reflect the light from the main reflection surface toward the second reflection surface, the second reflection surface is a concave reflection surface toward the front of the lamp, and the first reflection surface The shutter is formed so as to reflect the reflected light from the light source toward a region below the front horizontal line, and the shutter is at least partially overlapped with the fixedly arranged fixed portion, and inserted. And a movable portion supported so as to be movable in the lateral direction from the position. The movable portion is moved with respect to the fixed portion, so that a shape near a horizontal line of a light distribution pattern projected through the main optical path is formed. Is achieved by a vehicular lamp.

Further, according to a third aspect of the present invention, there is provided a light source, a main reflection surface for reflecting light from the light source toward the front, and light from the light source and / or the main reflection surface. In a projector-type vehicular lamp including: a projection lens to be focused; and a shutter disposed in a main optical path from the light source and / or the main reflection surface to the projection lens to block a part of the main optical path, In addition, it further comprises at least three reflecting surfaces and a covering member constituting a sub-optical path for irradiating light emitted from the light source forward, wherein the first reflecting surface is provided by the light source and / or the main reflecting surface. The coating member is formed so as to constitute a first sub optical path that reflects light forward, and the coating member has a concave reflection surface on the plateau side provided with an opening or a cutout that allows light of the main optical path to pass therethrough. So, the first counter An opening or notch through which the light of the sub optical path toward the surface can pass, and the second reflecting surface is disposed so as to be insertable into and removable from the sub optical path, and the second reflecting surface is retracted from the sub optical path. A light source that is configured as a movable reflecting surface located in the shadow area of the covering member, and the third reflecting surface is reflected by the movable reflecting surface when the movable reflecting surface is inserted into the sub optical path. Formed so as to constitute a second sub-optical path for reflecting light from different directions,
The light reflected by the third reflecting surface passes through the projection lens, or is radiated forward without passing through,
By moving the movable reflecting surface, the first sub optical path and the second sub optical path are switched to change the shape or brightness balance of the light distribution pattern. You.

[0010] The vehicular lamp according to the present invention preferably comprises:
The inner surface of the covering member is configured as a reflecting surface, and the light reflected by the covering member is reflected by another reflecting surface or a third reflecting surface that is concave toward the front of the lamp, and the reflected light is The light is emitted forward without passing through the projection lens or without passing through the projection lens.

The vehicular lamp according to the present invention is preferably
The shutter includes a fixed portion that is fixedly arranged, and a movable portion that is at least partially overlapped with the fixed portion and that is instructed to be movable in the lateral direction from the insertion position. By being moved relative to the
The shape of the light distribution pattern projected through the main optical path is changed near the horizontal line.

[0012] The vehicular lamp according to the present invention preferably comprises:
Forming a cutoff shape by blocking a part of the light of the second sub optical path reflected by the third reflection surface by an individual shutter forming a shape near a horizontal line of the light distribution pattern. It is characterized by.

The vehicular lamp according to the present invention is preferably
The fixed portion of the shutter defines an upper end on one side of a cutoff shape of the light distribution pattern of the irradiation light, and the movable portion of the shutter faces the other side near the cutoff center of the irradiation light at the insertion position. A slanted portion that descends and a horizontal portion that is continuous with the slanted portion.

The vehicular lamp according to the present invention is preferably
At least a movable part of the shutter is formed in a concave shape toward the projection lens, and the movable part is swingably supported around a vertical axis on the projection lens side.

The vehicular lamp according to the present invention is preferably
A return spring for urging the movable portion of the shutter to the insertion position and a stopper for locking the shutter at the insertion position are provided.

The vehicular lamp according to the present invention is preferably
The movable part of the shutter and / or the movable reflective surface is
The shape or brightness balance of the light distribution pattern is changed by being moved based on a steering angle of the steering and / or a signal such as a road condition acquired by car navigation.

According to the above-described first configuration, the light that has entered the projection lens directly from the light source or reflected by the reflection surface is converged by the projection lens, is irradiated forward, and illuminates a predetermined irradiation range. . At that time, part of the light incident on the projection lens is blocked by the shutter,
A desired orientation characteristic is obtained such that the irradiation distance becomes longer on the oncoming lane side so as not to give dazzling light to the oncoming vehicle.

When the movable portion of the shutter is moved in the horizontal direction with respect to the fixed portion, the cutoff shape of the light distribution pattern changes. The shape near the horizontal line partially changes in the vertical direction. Thus, for example, when the vehicle is traveling on the right corner in a left-hand traffic or turning right, the irradiation distance is increased toward the opposite lane of the vehicle, and sufficient visibility can be secured.

As described above, according to the first configuration of the present invention, the cut-off shape of the light distribution pattern can be changed by moving the movable portion of the shutter in the horizontal direction. When traveling in the right corner, it is possible to increase the irradiation distance on the opposite lane side, improving the visibility of the front of the corner and moving the movable part in the lateral direction, so that the cutoff of the irradiation light Vertical movement is suppressed, and a highly accurate cutoff can be formed.

According to the above-described second configuration, the light that has entered the projection lens directly from the light source or reflected by the main reflecting surface is:
Focused by the projection lens and illuminated forward,
Illuminate a predetermined irradiation range. Light that is reflected from the light source directly or on the main reflecting surface and enters the first reflecting surface is reflected by the first reflecting surface and travels toward the second reflecting surface. Then, the light incident on the second reflecting surface is reflected toward the front of the lamp, and proceeds toward a region below the horizontal line. At this time, since a part of the light incident on the projection lens is blocked by the shutter, a desired light distribution characteristic is obtained such that the irradiation distance becomes longer on the oncoming lane side so as not to give the oncoming vehicle dazzling light. .

When the movable portion of the shutter is moved in the horizontal direction with respect to the fixed portion, the cutoff shape of the light distribution pattern changes. That is, the horizontal movement of the movable portion causes the horizontal line of the light distribution pattern to move. The nearby shape partially changes in the vertical direction. Thus, for example, when the vehicle is traveling in a right corner in a left-hand traffic or turning right, the irradiation distance is increased toward the opposite lane of the vehicle, and sufficient visibility can be secured.

As described above, according to the second configuration of the present invention, the cut-off shape of the light distribution pattern can be changed by moving the movable portion of the shutter in the horizontal direction. When traveling in the right corner, it is possible to increase the irradiation distance on the opposite lane side, improving the visibility of the front of the corner and moving the movable part in the lateral direction, so that the cutoff of the irradiation light Vertical movement is suppressed, and a highly accurate cutoff can be formed.

According to the third configuration, the light that has entered the projection lens directly from the light source or reflected by the main reflecting surface is:
Focused by the projection lens and illuminated forward,
Illuminate a predetermined irradiation range. Light reflected directly from the light source or on the main reflecting surface enters the first reflecting surface through the opening or the cutout of the covering member, is reflected by the first reflecting surface, and enters the first sub optical path. Along the second reflective surface. Then, the light incident on the second reflecting surface is reflected toward the front of the lamp, and proceeds toward a region below the horizontal line.

On the other hand, when the second reflecting surface is inserted into the first sub optical path, the light traveling on the first sub optical path is reflected by the second reflecting surface, and Are reflected by the third reflecting surface along the optical axis, and are irradiated in different directions through the projection lens. At this time, since a part of the light incident on the projection lens is blocked by the shutter, a desired light distribution characteristic is obtained such that the irradiation distance becomes longer on the oncoming lane side so as not to give the oncoming vehicle dazzling light. .

Therefore, when the second reflecting surface as the movable reflecting surface is inserted into and removed from the first sub-optical path, the first sub-optical path and the second sub-optical path are switched, and the light distribution pattern is changed. By changing the cutoff shape or the brightness balance, that is, by moving the second reflecting surface as a movable reflecting surface, the shape of the light distribution pattern near the horizontal line is partially changed in the vertical direction, and the brightness near the central axis is changed. Changes. Thus, when the vehicle travels straight, the light traveling along the first sub-optical path increases the brightness near the central axis of the cutoff shape, and when the vehicle travels, for example, at the right corner in a left-hand traffic or turns right, , The irradiation distance becomes longer toward the opposite lane, and sufficient visibility can be secured.

Thus, according to the third configuration of the present invention, by moving the second reflecting surface as a movable reflecting surface, the light passing through the first sub-optical path when the vehicle is traveling straight ahead can be used. Since the light is focused near the cutoff center of the light distribution pattern, the brightness near the center is increased, and the light passing through the second sub optical path can change the cutoff shape of the light distribution pattern. For example, when traveling on the right corner in left-hand traffic, the irradiation distance can be lengthened on the opposite lane side, and visibility regarding the front of the corner is improved.

The inner surface of the covering member is formed as a reflecting surface, and the light reflected by the covering member is reflected by another concave reflecting surface or a third reflecting surface concave toward the front of the lamp. When the reflected light passes through the projection lens or is irradiated forward without passing through, the light reflected on the inner surface of the covering member is reflected by the third reflecting surface or another reflecting surface. Then, the light is irradiated forward without passing through or not through the projection lens, so that the brightness of the alignment pattern is increased.

The above-mentioned shutter at least partially overlaps with the fixed portion fixedly arranged, and
A movable part instructed to be movable laterally from the insertion position,
When the movable portion is moved relative to the fixed portion to change the shape near the horizontal line of the light distribution pattern projected through the main optical path, the movable portion of the shutter is moved to the fixed portion. , The cutoff shape changes, that is, the cutoff shape partially changes in the vertical direction due to the movement of the movable portion. This allows
When the vehicle turns left or right or runs in a corner, the irradiation distance increases in the traveling direction of the vehicle, and sufficient visibility can be secured.

A part of the light in the second sub optical path reflected by the third reflecting surface is blocked by an individual shutter forming a shape near the horizontal line of the light distribution pattern, so that the cutoff shape is reduced. In the case of forming, the individual shutters act on a part of the light in the second sub optical path, so that the cutoff shape changes substantially, that is, by the lateral movement of the movable portion, The cut-off shape partially changes in the vertical direction. As a result, when the car turns left or right or runs in a corner,
The irradiation distance becomes longer, and sufficient visibility can be secured. In this case, since the individual shutters are fixedly arranged, the configuration is simplified, the cost can be reduced, and the maintenance is facilitated as compared with the case where the movable portions are provided in the shutters.

The fixed portion of the shutter defines an upper end on one side of a cutoff shape of the light distribution pattern of the irradiation light, and the movable portion of the shutter has another position near the cutoff center of the irradiation light at the insertion position. When defining a sloped portion descending toward the side and a horizontal portion continuous with the sloped portion, when the movable portion of the shutter is at the insertion position, the movable portion is
This defines an inclined portion near the center of the cutoff and a horizontal portion continuous with the inclined portion. As a result, the movable part forms a cutoff on the opposite lane side,
The irradiation distance is configured to be short.

On the other hand, when the movable portion moves from the insertion position in the horizontal direction, the lower right portion near the center of the cutoff of the irradiation light moves in the lateral direction toward the opposite lane. Will be shifted upward from the center side. As a result, on the left side from the center of the cutoff, the fixed portion defines the cutoff, so that the dazzling light to the preceding vehicle is blocked. Changes the cutoff due to
The irradiation distance becomes longer. Therefore, when the vehicle travels in the right corner, for example, a sufficiently bright view can be ensured by increasing the irradiation distance on the opposite lane side. The performance is improved.

In the case where at least the movable portion of the shutter is formed in a concave shape toward the projection lens side, and the movable portion is swingably supported around a vertical axis on the projection lens side, Since the movable portion can be moved laterally from the insertion position by a simple configuration, the increase in cost is suppressed and the movable portion can be moved with high accuracy.

When a return spring for urging the movable portion of the shutter to the insertion position and a stopper for locking the shutter at the insertion position are provided, a drive mechanism for moving the movable portion of the shutter is provided. When a failure occurs, the movable portion of the shutter is urged to the insertion position by the return spring, and the movable portion of the shutter comes into contact with the stopper to be positioned at the insertion position. Therefore, the movable portion of the shutter is positioned at the insertion position when the drive mechanism fails, so that the irradiation distance on the opposite lane side does not inadvertently increase.

The movable portion of the shutter and / or the movable reflecting surface is moved based on a steering angle and / or a signal such as a road condition acquired by car navigation, thereby forming the light distribution pattern or the light distribution pattern. When the brightness balance is changed, the movable portion and / or the movable reflective surface of the shutter largely moves in the lateral direction as the steering angle of the steering increases or in accordance with the radius of curvature of the road curve in the traveling direction. Will do. Thereby, on one side from the center of the cutoff shape,
Since the fixed portion defines the cutoff shape, the dazzling light to the preceding vehicle is blocked, and the movable portion extends over a wider angle range from the center of the cutoff shape to the other side, that is, the opposite lane. The cutoff shape changes, and the irradiation distance increases. Therefore, the angle range in which the irradiation distance is longer at a corner having a smaller radius of curvature is broadened toward the opposite lane, so that the visibility in front of the corner is improved.

[0035]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS.
The embodiment described below is a preferred specific example of the present invention, and thus various technically preferable limitations are added. However, the scope of the present invention particularly limits the present invention in the following description. The embodiment is not limited to these embodiments unless otherwise stated.

FIGS. 1 to 3 show the configuration of a first embodiment of a vehicular lamp according to the present invention. 1 to 3, a vehicle lamp 10 is a headlight of an automobile,
It comprises a bulb 11 as a light source, a main reflection surface 12 arranged so as to surround the bulb 11, a projection lens 13, and a shutter 14.

The bulb 11 is a bulb generally used for a headlight or an auxiliary headlight of an automobile, and is fixedly held by a socket 11a and is supplied with power.

The main reflection surface 12 is formed so as to be concave toward the front so as to reflect light from the bulb 11 and guide the light to the projection lens 13.

The projection lens 13 is a convex lens disposed on an optical axis extending in front of the bulb 11, and focuses light reflected directly from the bulb 11 or on the main reflection surface 12 to go forward. And irradiate.

The shutter 14 is made of a light-shielding material, and is disposed between the bulb 11 and the projection lens 13, preferably near the focal point of the projection lens 13. By cutting off a part of the light reflected by, a cutoff is defined and the light distribution characteristic of the light projected by the projection lens 13 is adjusted.

Here, the shutter 14 is composed of a fixed part 15 and a movable part 16 in the case shown. As shown in FIG. 1, the fixing portion 15 of the shutter 14 is formed in a concave shape toward the front, that is, toward the projection lens 13, for example, in a cylindrical shape centered on a vertical axis, and is fixedly arranged.

On the other hand, the movable portion 16 of the shutter 14 is similarly concaved toward the front, that is, toward the projection lens 13 inside the fixed portion 15, for example, in a cylindrical shape centered on the vertical axis. It is swingably supported around the vertical axis 16a from an insertion position indicated by a solid line in FIG. 2 to a retracted position indicated by a chain line in FIG. As shown in FIG. 3, the movable unit 16 is driven by the driving unit 17 to move the vertical axis 1.
6a, and is urged toward the insertion position by a return spring 16b.
, So that it is positioned at the insertion position.

The drive section 17 comprises a drive motor 17a and a reduction gear 17b in the illustrated case.
The rotational drive of the drive motor 17a is transmitted to the vertical shaft 16a via the reduction gear 17b, and the movable portion 16 is moved to the vertical shaft 16a.
To be turned around. The drive of the drive motor 17a is preferably controlled based on the steering angle of the steering. Further, the drive unit 17 may be a drive mechanism having any other configuration.

Further, the fixing portion 15 of the shutter 14
As shown in FIG. 4A, an upper edge defining an upper edge U extending horizontally slightly above the horizontal line on the left side from the center of the cutoff shape of the irradiation pattern (see FIG. 4B). A portion 15U, an inclined portion 15N2 defining a right-downward portion N2 extending slightly below the horizontal line at the cutoff center at an angle of 15 degrees from the upper edge portion 15U, and slightly below the horizontal line on the right side of the cutoff center. A horizontal portion 15H2 defining a horizontal portion H2 extending horizontally.

On the other hand, as shown in FIGS. 4A and 4B, the movable portion 16 of the shutter 14 is slightly obliquely inward of the lower right portion N2 at the insertion position. Inclined portion 16N that defines extending lower right portion N1
1 and a horizontal portion 16H1 defining a horizontal portion H1 extending horizontally below the horizontal line slightly to the right of the cutoff center of the illumination light.

Here, when the movable portion 16 moves in the horizontal direction, as shown in FIGS. 5B and 6B,
The inclined portion 16N1 of the movable portion 16 is
Retreat laterally from 5N2. Thereby, the fixing portion 15
The horizontal portion 15H2 is exposed from the back side of the movable portion 16 and forms a cutoff, whereby the cutoff shape changes.

The vehicle lamp 10 according to the embodiment of the present invention comprises:
The valve 11 is configured as described above.
1a, the light emitted from the bulb 11 is reflected directly or on the main reflection surface 12, is partially blocked by the shutter 14, and then enters the projection lens 13, where the light is emitted. The light is converged by the refraction of the light 13 and is irradiated forward.

At this time, the movable portion 16 of the shutter 14 is at the insertion position, and as shown in FIG.
In contrast, the shutter 14, which is disposed so as to cover the inclined portion 15 N 2 and the horizontal portion 15 H 2, has a cut-off formed by the shutter 14, that is, the fixed portion 15 and the movable portion 16, so that its orientation characteristics are as shown in FIG. As shown in FIG. 2), on the left side from the center, the upper edge portion 15U of the fixed portion 15 defines an area above the horizontal line, and at an angle by the inclined portion 16N1 of the movable section 16, and on the right side from the center, the movable section 1
The second horizontal portion 16H1 is horizontally defined slightly below the horizontal line.

Thus, as shown in FIG. 4C, the illumination range of the vehicle lamp 10 in front of the vehicle is such that light is radiated to the far part of the road ahead of the vehicle on the left side from the center. On the right side of the center, that is, on the oncoming lane side, the irradiation distance is set to be short, so that no dazzling light is given to oncoming vehicles. In addition, on the slightly left side from the center,
Since the orientation characteristics are obliquely blocked by the inclined portion 16N1 of the movable portion 16, no dazzling light is given to the preceding vehicle.

Here, when the vehicle enters the right corner where the radius of curvature is large, the driver turns the steering slightly to the right, and based on this steering angle, the movable portion 16 is rotated by the driving portion 17. When driven, as shown in FIG. 5A, the movable part 16 moves in the lateral direction (left direction) with respect to the fixed part 15. As a result, the orientation characteristics are changed as shown in FIG.
As shown in (B), on the left side from the center, it is defined above the horizontal line by the upper edge portion 15U of the fixing portion 15, and obliquely by the inclined portion 15N2 of the fixing portion 15, and small on the right side from the center. The horizontal portion 15H2 of the fixed portion 15 is slightly below the horizontal line over the horizontal angle range (the range indicated by oblique lines in FIG. 5B), and further on the right side, the inclined portion 16N1 and the horizontal portion 16H1 of the movable portion 16
A little below the horizon.

Therefore, as shown in FIG. 5 (C), the irradiation range of the vehicle lamp 10 in front of the vehicle is, as shown in FIG. At the same time, the irradiation distance is set longer on the right side from the center, that is, on the opposite lane side, as indicated by reference numeral X1, in a small horizontal angle range, and is set shorter in a larger angle range, Light distribution to the oncoming lane is performed in a small horizontal angle range. Thus, when the vehicle is traveling in the right corner having a large radius of curvature, the driver can secure visibility in front of the corner by increasing the irradiation distance in front of the corner.
In this case as well, the fixing portion 15 is slightly leftward from the center.
Since the orientation characteristics are obliquely blocked by the inclined portion 15N2, no dazzling light is given to the preceding vehicle.

Further, when the vehicle enters the right corner having a small radius of curvature, the driver turns the steering greatly to the right, and based on this steering angle, the driving unit 1 is turned on.
7, the movable portion 16 is driven to rotate, and as shown in FIG. 6A, the movable portion 16 moves largely laterally (leftward) with respect to the fixed portion 15. Thereby, as shown in FIG. 6 (B), the orientation characteristics of the fixed portion 15 on the left side from the center are changed.
The upper edge portion 15U is above the horizontal line, and is obliquely defined by the inclined portion 15N2 of the fixing portion 15, and a large horizontal angle range is shown on the right side from the center (the range indicated by oblique lines in FIG. 6B). Over the horizontal portion 1 of the fixing portion 15
5H2 will define a point slightly below the horizon.

Accordingly, as shown in FIG. 6 (C), the irradiation range of the vehicle lamp 10 in front of the vehicle is, as shown in FIG. At the right side from the center, that is, on the opposite lane side, the irradiation distance is set long in a large horizontal angle range, as indicated by reference numeral X2, and light distribution to the opposite lane side in a large horizontal angle range is performed. Done. Thus, when the vehicle is traveling in the right corner having a small radius of curvature, the driver can secure visibility in front of the corner by increasing the irradiation distance in front of the corner.
In this case, similarly, on the slightly left side from the center,
Since the orientation characteristics are obliquely blocked by the inclined portion 15N2 of the fixing portion 15, no dazzling light is given to the preceding vehicle.

Further, when the drive unit 17 is out of order,
The movable portion 16 of the shutter 14 is urged toward the insertion position by the tension of the return spring 16b, and is positioned at the insertion position by contacting the stopper 16c. Accordingly, when the drive unit 17 fails, the movable unit 16 is fixedly held at the insertion position by the return spring 16b.
It is configured such that the irradiation distance does not inadvertently increase on the opposite lane side.

As described above, according to the vehicular lamp 10 according to the embodiment of the present invention, the movable portion 16 of the shutter 14 swings around the vertical axis 16a and moves in the horizontal direction. Since the cutoff shape can be changed, it is possible to increase the irradiation distance on the opposite lane side when traveling in the right corner, and the visibility in front of the corner is improved.

Further, since the movable section 16 can be moved in the horizontal direction by the driving section 17 having a simple structure, the cost does not increase so much and the vertical movement of the cutoff of the irradiation light is suppressed. As a result, a highly accurate cutoff can be formed. At that time, on the left side from the center of the light distribution pattern, the fixed portion defines a cutoff, so that the dazzling light is not always given to the preceding vehicle. Further, when the drive unit 17 fails, the movable unit 1
6 is held at the insertion position, so that the irradiation distance does not increase on the oncoming lane side, and no dazzling light is accidentally given to the oncoming vehicle.

FIGS. 7 and 8 show a second embodiment of the vehicular lamp according to the present invention. 7 and 8, a vehicular lamp 20 includes a bulb 21 as a light source, a main reflection surface 22 arranged to surround the bulb 21, and five reflection surfaces respectively arranged outside the main reflection surface 22. ,
That is, the first reflecting surface 23, the second reflecting surface 24, the third reflecting surface 25, the fourth reflecting surface 26 and the fifth reflecting surface 27, the projection lens 28, and the shutter 29 are provided. .
Among the above components, all the components other than the second reflection surface 24 and the movable portion 31 of the shutter 29 described later are fixedly arranged, and the second reflection surface 24 is
As described later, it is arranged to be swingable.

The bulb 21 is a bulb generally used for a headlight or an auxiliary headlight of an automobile, and is fixedly held by a socket 21a and is supplied with power.

The main reflection surface 22 is formed to be concave toward the front so as to reflect light from the bulb 21 and guide the light to the projection lens 28. The main reflection surface 22 is directed forward so that the first focal point is located near the light emitting position 21b of the bulb 21 and the second focal point is located near the focal point on the bulb 21 side of the projection lens 28. It is configured as a concave elliptical reflecting surface. Here, the elliptical reflection surface includes not only a spheroidal surface and an elliptic cylinder but also a free-form surface based on an ellipse.

The first reflecting surface 23 is provided on the main reflecting surface 2
2 is arranged on the side, that is, on the right side in the figure, and is configured as a parabolic reflecting surface that is concave toward the front such that its focal point is located near the light emitting position 21b of the bulb 21 and will be described later. The composite reflecting surface is composed of a plurality of reflecting surfaces so as to have a light distribution characteristic like L3 shown in FIG. 9B. Here, the parabolic reflecting surface includes not only a rotating paraboloid and a parabolic column, but also a free-form surface based on a paraboloid.

The second reflecting surface 24 is disposed so as to be able to be inserted and removed in an optical path from the bulb 21 to the first reflecting surface 23, and has a first focal point near the light emitting position 21 b of the bulb 21. It is a spheroidal reflecting surface having a concave long side facing the light source, and is swingably supported around the long axis Y. Here, the second reflecting surface 24 is moved from a retracted position shown in FIG. 7 to an insertion position facing an opening 25a of the third reflecting surface 25 described later by a driving unit (not shown). The second reflection surface 2
4 is located at the retracted position, the second reflecting surface 24 is located in the shadow area of the third reflecting surface 25 when viewed from the bulb 21, and the third reflecting surface 25 acts as a covering member. I do.

The third reflecting surface 25 is an elliptical reflecting surface having a first focal point located in the vicinity of the light emitting position 21b of the bulb 21 and having a major axis Y in the horizontal direction and concave toward the light source. It is supported so as to cover almost the entire surface of the bulb 21 and the main reflection surface 22 on the irradiation direction side. The third reflection surface 25 has openings 25a and 25b in a region corresponding to the insertion position of the second reflection surface 24 and a region corresponding to the optical path from the bulb 21 to the projection lens 28, respectively. I have.
In the illustrated case, the second reflecting surface 24 and the third reflecting surface 2
5 is configured as substantially the same spheroidal reflecting surface,
The first focus and the second focus are substantially coincident.

The fourth reflecting surface 26 is formed as a parabolic reflecting surface that is concave toward the front such that its focal position is located near the second focal point of the second reflecting surface 24.

The fifth reflecting surface 27 is formed as a parabolic reflecting surface that is concave toward the front such that its focal position is located near the second focal point of the third reflecting surface 25.

The projection lens 28 is a convex lens disposed on the optical axis X extending in front of the bulb 21. The projection lens 28 is reflected directly from the bulb 21 or by the main reflection surface 22, and the opening of the third reflection surface 25 is formed. Focus the light passing through the part 25b,
Irradiate forward.

The shutter 29 is made of a light-shielding material, is disposed between the opening 25b of the third reflection surface 25 and the projection lens 28, and is provided directly from the bulb 21 or by the main reflection surface 22. By blocking a part of the light that has been reflected and passed through the opening 25b of the third reflection surface 25, a cutoff is defined, and the light distribution characteristics of the light projected by the projection lens 28 are adjusted.

Here, the shutter 29 comprises a fixed part 30 and a movable part 31 in the case shown in the figure. As shown in FIG. 7, the fixed portion 30 of the shutter 29 is formed in a concave shape toward the front, that is, toward the projection lens 23, for example, in a cylindrical shape around the vertical axis, and is fixedly disposed.

On the other hand, the movable portion 31 of the shutter 29 has a concave shape toward the front, that is, the projection lens 23 inside the fixed portion 30, for example, a cylindrical surface centered on the vertical axis. And is swingably supported around a vertical axis 31a. And the movable part 31
Is driven by a drive unit (not shown) having the same configuration as the drive unit 17 in the vehicle lamp 10 shown in FIG.
And is urged toward the insertion position shown in FIG. 7 by a return spring (not shown), and is positioned at the insertion position by contacting a stopper (not shown).

Further, the fixed part 30 and the movable part 31 of the shutter 29 are connected to the vehicular lamp 10 shown in FIGS.
Similarly to the fixed portion 15 and the movable portion 16 of the shutter 14, the upper edge portion 30U, the inclined portion 30N2 and the horizontal portion 30H2, and the inclined portion 31N1 and the horizontal portion 31H1 respectively.
And

According to the vehicular lamp 20 having such a configuration, the light emitted from the light emitting position 21b of the bulb 21 is reflected directly or by the main reflecting surface 22 to form the third reflecting surface 2b.
Proceed towards 5.

The opening 25 of the third reflecting surface 25
The light L <b> 2 incident on portions other than a and 25 b is reflected by the third reflection surface 25, travels toward the second focal point of the third reflection surface 25, and is further reflected by the fifth reflection surface 27. . At this time, the light L2 incident on the fifth reflecting surface 27 passes through the focal position of the fifth reflecting surface 27, so that the light L2 reflected on the fifth reflecting surface 27 travels forward, Further, the light passes through the front lens 28b and is irradiated forward. At this time, the light L reflected by the fifth reflection surface 27
As shown in FIG. 9 (B), the alignment characteristics of No. 2 are designed to irradiate light below the horizontal line, wide in the horizontal direction, and sufficiently below.

Further, the opening 25a of the third reflecting surface 25
Incident on the second reflecting surface 24 has a different course depending on whether the second reflecting surface 24 is at the insertion position or the retracted position. Second reflective surface 24
Is in the retracted position, the light L3 incident on the opening 25a of the third reflecting surface 25 passes through the opening 25a and is reflected by the first reflecting surface 23. First reflective surface 23
Is a composite reflecting surface composed of a plurality of reflecting surfaces, and since each reflecting surface reflects substantially parallel light toward the vicinity of the front center, the light L3 reflected by the first reflecting surface 23 is reflected by the front lens 28b. And is radiated forward. At this time, the orientation characteristic of the light L3 reflected by the first reflection surface 23 is such that the light is focused near the center and irradiated with light, as indicated by L3 in FIG. 9B.

On the other hand, when the second reflecting surface 24 is at the insertion position, the light L4 incident on the opening 25a of the third reflecting surface 25 passes through this opening 25a and The light is reflected by the reflection surface 24, advances toward the second focal point of the second reflection surface 24, and further reflected by the fourth reflection surface 26. At this time, since the light L4 incident on the fourth reflecting surface 26 passes through the focal position of the fourth reflecting surface 26, the light distribution characteristic of the light L4 reflected on the fourth reflecting surface 26 is as shown in FIG. In (A), as indicated by L4, irradiation is broadened in the horizontal direction below the center.

When the second reflecting surface 24 is located at the retracted position, light is irradiated relatively widely forward as in the case of the vehicular lamp 10 shown in FIGS.
Further, when the second reflecting surface 24 is located at the insertion position, the light L3 from the first reflecting surface 23 irradiates the light in a concentrated manner, particularly to a far part near the center, so that the light is near the center of the road. Can irradiate light farther.

The light L 1, which becomes the main optical path and has passed through the opening 25 b of the third reflecting surface 25, is partially blocked by the shutter 29 and then enters the projection lens 28, where the light L 1 is refracted. And the front lens 2
Irradiated forward through 8b. Shutter 2
9, when the movable portion 31 is at the insertion position, a part of the light L1 is blocked by the upper edge portion 30U of the fixed portion 30 and the inclined portions 31N1 and the horizontal portion 31H1 of the movable portion 31.
As shown in (D), a cut-off orientation characteristic having a horizontal portion U above the horizontal line, a horizontal portion H1 below the horizontal line, and an inclined portion N1 is defined.

Here, when the movable portion 31 of the shutter 29 moves laterally from the insertion position, the cutoff shape of the irradiation light changes, and as shown by the oblique line in FIG. Thus, the light is irradiated slightly below the horizontal line, the irradiation distance on the opposite lane side becomes longer, and the amount of irradiation is increased by the second reflection surface 24. Note that, in the drawing, a dotted line indicates an irradiation range in a state where the movable section 31 has completely moved. Therefore, shutter 2
The cut-off shape can be controlled and formed with high precision by the nine movable portions 31. Also, the light distribution characteristics can be changed at the same time.

In the above embodiment, the case where the second reflecting surface 24 is located at the insertion position or the retracted position has been described. However, the present invention is not limited to this.
Like the movable portion 31 of the shutter 29, the shutter 4 may swing gradually in accordance with the steering angle of the steering wheel. Thus, when the vehicle is traveling in a corner, light can be reliably emitted to the front of the corner, and the visibility of the front of the corner is improved. Although the opening 25a and the opening 25b of the third reflection surface 25 are formed separately, they may be formed as an integrated opening or cutout.

FIG. 10 shows a third embodiment of the vehicular lamp according to the present invention. In FIG. 10, the vehicle lamp 20 ′ is different from the projection lens 28 in that the light L 3 ′ as the sub optical path is not the light L 3 that passes through the optical path that does not pass through the projection lens 28.
The configuration is the same as that of the vehicle lamp 20 of the second embodiment, except that the light passes through an optical path that is irradiated forward of the lamp through the lamp. Therefore, the same components as those of the vehicle lamp 20 of the second embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The first reflecting surface 23 ′ is connected to the main reflecting surface 22.
, That is, on the right side in the drawing, is disposed so as to have a first focal point near the light emitting position 21b of the bulb 21 and a second focal point near the focal position on the bulb 21 side of the projection lens 28. It is configured as a laterally concave elliptical reflecting surface. Therefore, the opening 25a of the third reflection surface 25
When the second reflection surface 24 is at the retracted position, the light incident on the first reflection surface 2 passes through the opening 25a.
The light is reflected at 3 ′, advances toward the second focal point of the first reflection surface 23 ′, and further enters the projection lens. At this time, since the light L3 ′ incident on the projection lens 28 passes near the focal position of the projection lens 28, the light L3 ′ is concentrated forward toward the vicinity of the center by the refraction of the projection lens 28, and is directed toward the front of the lamp. Irradiated.

At this time, the light distribution characteristic of the light L 3 ′ reflected by the first reflecting surface 23 ′ and transmitted through the projection lens 28 is such that when the movable portion 31 of the shutter 29 is at the insertion position, as shown in FIG.
(D) shows the same cutoff shape as the light L1 which is the main optical path. Here, when the movable portion 31 of the shutter 29 moves in the horizontal direction from the insertion position, light is emitted slightly below the horizontal line as shown by the oblique lines in FIG. 11C as in the second embodiment. As a result, the irradiation distance on the opposite lane side increases, and the amount of irradiation increases due to the second reflecting surface.

FIGS. 12 to 14 show the configuration of the fourth embodiment of the vehicular lamp according to the present invention. 12 to 14, a vehicle lamp 40 is a headlight of an automobile, and includes a bulb 41 as a light source, a main reflection surface 42 arranged to surround the bulb 41, and a main reflection surface 42. Five reflecting surfaces respectively arranged on the outside, that is, a first fixed reflecting surface 43 as a sixth reflecting surface, a movable reflecting surface 44 as a first reflecting surface, a second reflecting surface and a fourth reflecting surface A second fixed reflection surface 45 as a third reflection surface and a third fixed reflection surface 46 as a fifth reflection surface;
8, and a shutter 49. Note that, of the above components, the other components except the movable reflection surface 44 are fixedly disposed, and the movable reflection surface 44 is rotatably disposed as described later.

The bulb 41 is a bulb generally used for a headlight or an auxiliary headlight of an automobile, and is fixedly held by a socket 41a and is supplied with power.

The main reflection surface 42 is formed so as to be concave toward the front so as to reflect light from the bulb 41 and guide the light to the projection lens 48.

The first fixed reflecting surface 43 is disposed in front of the main reflecting surface 42, the first focal position is near the light emitting position of the bulb 41, and the second focal position is It is configured as an elliptical reflection surface located below and in front of the first focal position. Here, the elliptical reflection surface includes not only a spheroidal surface and an elliptic cylinder but also a free-form surface based on an ellipse. Further, the first fixed reflection surface 43 has a center hole 43a near the center where the optical axis of the bulb 41 passes, and four windows symmetrically provided side by side in the vicinity of the upper edge. Parts, that is, inner first windows 43b and 43c and outer second windows 43d and 43e.
And

The movable reflecting surface 44 is slightly outside the first fixed reflecting surface 43 and
3 in the area of each of the windows 43b, 43d and 43c, 43e,
Each is configured as an elliptical reflecting surface such that the first focal position is located near the light emitting position of the bulb 41 and the second focal position is located below and in front of the first focal position. And each movable reflecting surface 44a, 44
b, each is independently rotatably supported around the major axis Y of the elliptical reflection surface.

As shown in FIG. 13, the left movable reflection surface 44a of the movable reflection surface 44 has a rotation axis 44c mounted on its long axis Y.
is rotated by a motor 44e via a reduction gear 44d, so that the movable reflection surface 44a
It is swung around c, and is rotated laterally from an insertion position for closing the windows 43b and 43d to a retracted position for opening the windows 43b and 43d. As shown in FIG. 13, the right movable reflection surface 44b is provided with a rotation shaft 44f coaxial with the rotation shaft 44c on its long axis Y. The rotation shaft 44f is connected to a reduction gear 44g.
, The movable reflection surface 44b is swung around the rotation axis 44f, and the retracted position is opened from the insertion position to close the windows 43c and 43e to the windows 43c and 43e. It is designed to be rotated in the horizontal direction up to.

Note that these motors 44e and 44h
Preferably, drive control is performed according to the traveling direction of the vehicle based on the steering angle of the steering or based on road conditions obtained by car navigation. Thereby, with respect to the left and right movable reflection surfaces 44a and 44b of the movable reflection surface 44, for example, when the traveling speed is low (for example, 40 km / h or less), both the movable reflection surfaces 44a and 44b are at the insertion position, and the traveling speed When the speed is high (for example, over 80 km / h), both movable reflecting surfaces 44a and 44b are rotated to the retracted position. Further, when the traveling speed is a medium speed (for example, 40
km / h and less than or equal to 80 km / h), only the right movable reflection surface 44b rotates to the right when the vehicle travels to the left in accordance with the traveling direction of the vehicle. When the vehicle travels to the right, only the movable reflection surface 44a on the left side rotates to the left side.

The second fixed reflecting surface 45 is formed as a parabolic reflecting surface that is concave toward the front so that the focal point is located near the second focal position of the first fixed reflecting surface 43. . Here, the parabolic reflecting surface includes not only a rotating paraboloid and a parabolic column, but also a free-form surface based on a paraboloid. Further, as shown in FIG. 14, the second fixed reflecting surface 45 passes through the first windows 43b and 43c inside the first fixed reflecting surface 43, and is reflected by the movable reflecting surface 44. Reflecting surfaces on which the light reflected by the movable reflecting surface 44 passes through the portions 45a and 45b as the second reflecting surfaces on which the reflected light is incident and the second reflecting windows 43d and 43e. Parts 45c and 45d.

Here, the portions 45c and 45d are disposed adjacent to the outside of the portions 45a and 45b, respectively.
These portions 45c and 45d are connected to the first fixed reflection surface 43.
Through the second windows 43d and 43e of the movable reflecting surface 44
The light reflected by the movable reflecting surface 44a through the second window 43d on the right side to the left side toward the front by the portion 45d. And the second window 43 on the left side.
e, the light reflected by the movable reflecting surface 44b
The portion 45d causes the light beam to converge rightward toward the front.

The third fixed reflecting surface 46 has a first focal point located near the light emitting position of the bulb 41 and a second focal point located between the bulb 41 and the projection lens 48. Each of the windows 43b, 43c, 43d, 43d,
43e, the light transmitted through the projection lens 4 is reflected.
8, portions 46a and 46 as third reflecting surfaces
b, and portions 46c and 46d as fifth reflecting surfaces.

The projection lens 48 is a convex lens disposed on the optical axis extending in front of the bulb 41, and is reflected directly from the bulb 41 or by the main reflection surface 42, and the center of the first fixed reflection surface 43. The light transmitted through the hole 43a is focused and irradiated forward.

The shutter 49 is made of a light-shielding material, and is disposed between the bulb 41 and the projection lens 48. The shutter 49 removes a part of the light reflected directly from the bulb 41 or by the main reflection surface 42. By blocking the light, a cutoff is defined, and the light distribution characteristics of the light projected by the projection lens 48 are adjusted.

Here, the shutter 49 comprises a fixed portion 49a and a movable portion 49b in the case shown. As shown in FIG. 12, the fixing portion 49a of the shutter 49 is formed in a concave shape toward the front, that is, toward the projection lens 48.
For example, it is formed in a cylindrical shape with the vertical axis 49c as the center, and is fixedly arranged. On the other hand, the movable portion 49b of the shutter 49 is similarly formed inside the fixed portion 49a in a concave shape toward the front, that is, toward the projection lens 48, for example, in a cylindrical shape centered on the vertical axis 49c. And is swingably supported around a vertical axis 49c.
The movable section 49b is configured to swing about a vertical axis 49c by a driving section (not shown). The drive unit is preferably driven and controlled in accordance with the traveling direction of the vehicle based on the steering angle of the steering or on the basis of the road condition obtained by car navigation.

Further, the fixing portion 49a of the shutter 49
The movable portion 49b is formed in an appropriate shape, for example, similarly to the above-described embodiment, so as to define a cutoff shape of a predetermined irradiation pattern.

When the movable portion 49b moves in the lateral direction in accordance with the traveling direction of the vehicle, the cutoff shape changes, and light is emitted slightly below the horizontal line in the traveling direction of the vehicle. , The irradiation distance becomes longer.

The vehicle lamp 40 according to the embodiment of the present invention
The valve 41 is configured as described above,
1a, the light emitted from the bulb 41 is partially or directly reflected by the main reflection surface 42, and the light emitted from the bulb 41 is reflected by the central hole 4 of the first fixed reflection surface 43.
After passing through 3a and partially blocked by the shutter 49, the light enters the projection lens 48, is converged by the refraction of the projection lens 48, and is irradiated forward in a cutoff shape of a predetermined irradiation pattern. . The cutoff shape can be changed in the same manner as in the above-described embodiment by moving the movable portion 49b of the shutter 49. For example, when the movable part 49b has the same shape and position as the movable part 16 in FIG.
The shape is as shown in FIG. Also, the valve 41
16 is reflected by the first fixed reflection surface 43 and further reflected by the second fixed reflection surface 45, and is converged on the second fixed reflection surface 45, whereby the light L2 shown in FIG.
As shown in (B), the light is emitted forward as slightly downward.

When both of the movable reflecting surfaces 44a and 44b are in the retracted position, the windows 43b and 4 of the first fixed reflecting surface 43
3c, 43d, 43e, and the third fixed reflecting surface 46
The light L3 reflected by the portions 46a, 46b, 46c, and 46d is focused by the projection lens 48 so that the light L3 is focused forward as shown in FIG. The light L4, which is emitted slightly below the horizontal line and slightly upward to the right of the center, and reflected by the portion 46a, is converged by the projection lens 48, as shown in FIG. The light is emitted slightly below the horizon toward the front and slightly upward to the left of the center. On the other hand, the light L reflected by the portion 46c
5 is focused by the projection lens 48 to obtain FIG.
As shown in (C), the light is emitted slightly below the horizontal line toward the front, slightly upward, and near the center.
The light L6 reflected by 6d is also converged by the projection lens 48, so that it is irradiated slightly forward, slightly below the horizontal line, and slightly upward near the center, as shown in FIG. 17D.

When both the movable reflecting surfaces 44a and 44b are at the insertion positions, the window 43 of the first fixed reflecting surface 43
b, 43c, 43d, 43e, and passes through the movable reflecting surface 44.
18A, the light L7 reflected by the window 43b is reflected by the portion 45b of the second fixed reflection surface 45, and as shown in FIG. It is irradiated slightly below the horizon and the window 4
The light L8 reflected by 3c is reflected by the portion 45a of the second fixed reflection surface 45, so that the light L8 is irradiated forward and downward as shown in FIG. 18B, similarly to the fixed light L7. Is done. On the other hand, the light L reflected by the window 43d
9 is a portion 45 of the fixed reflecting surface 45 as a fourth reflecting surface.
As shown in FIG. 18 (C), the light L10 radiated forward and slightly below the horizontal line toward the left, and reflected by the window 43e, as shown in FIG.
Is reflected by the portion 45c serving as the fourth reflection surface, and is irradiated downward toward the front and toward the right as shown in FIG. 18D.

Thus, when the traveling speed of the vehicle is low, and when the vehicle is traveling at a medium speed and the traveling direction of the vehicle is straight, both movable reflection surfaces 44a and 44b
As shown in FIG. 17 (A), it is located at the insertion position,
The window portion 4 of the first fixed reflection surface 43 emitted from the valve 41
3b, 43c, 43d, 43e, and the movable reflecting surface 4
The lights L7 to L10 reflected by the light reflecting surface 4 are reflected by the respective portions of the second fixed reflecting surfaces 45a and 45b and the fourth reflecting surfaces 45c and 45d, and as a whole, FIG.
The irradiation pattern shown in (B) is obtained, and in the irradiation range of the light L1 passing through the central hole 43a, the irradiation luminous intensity particularly at the lower portion near the center and on both the left and right sides is increased.

Here, for example, when the vehicle enters the right corner where the radius of curvature is large, the driver turns the steering slightly to the right, and the steering angle or the signal such as the road condition acquired by the car navigation is used on the basis of the signal. Depending on the traveling direction of the vehicle, the left movable reflection surface 44
a is rotated to the left by the motor 44e.
As shown in FIG. 0 (A), the first window 43b is partially opened. At this time, if the movable portion 49b of the shutter 49 is controlled to move simultaneously with the movement of the movable reflection surface 44a, the movable portion 49b also moves outward from the center side of the projection lens 48. As a result, the cutoff shape is changed, and the cutoff in a small angle range on the right side toward the front is lifted slightly below the horizontal line. Accordingly, the light L3 transmitted from the bulb 41 through the open portion of the window 43b is reflected by the portion 46b of the third fixed reflection surface 46, passes through the projection lens 48, and
It is emitted slightly below the horizon toward the front. Thereby, the irradiation pattern shown in FIG.
The irradiation distance becomes longer on the right side of the center, and the visibility in the traveling direction of the vehicle is improved.

When the vehicle enters the right corner having a small radius of curvature, the driver turns the steering largely to the right, and the vehicle turns on the basis of the steering angle or a signal such as a road condition acquired by car navigation. 21A, the movable reflection surface 44a on the left side is rotated leftward by the motor 44e in accordance with the traveling direction of.
As shown in (1), the first window 43b is completely opened. At this time, the cut-off shape is changed by controlling the movable portion 49b of the shutter 49 to also largely move from the central axis, and the cut-off in a large angle range on the right side toward the front is slightly lower than the horizontal line. Will be lifted. Thus, the light L3 transmitted through the window 43b from the bulb 41 is transmitted to the third fixed reflection surface 46.
The light is reflected by the portion 46b, and passes through the projection lens 48, and is emitted slightly below the horizontal line toward the front. As a result, the irradiation pattern shown in FIG. 21B is obtained, the irradiation distance is increased in a large angle range on the right side of the center, and the visibility in the traveling direction of the vehicle is improved.

On the other hand, for example, when the car enters the left corner where the radius of curvature is large, the driver turns the steering slightly to the left, and the steering angle or the signal such as the road condition acquired by the car navigation is used. , The right movable reflecting surface 44b is rotated rightward by the motor 44h in accordance with the traveling direction of the vehicle,
As shown in FIG. 22A, the first window 43c is partially opened. As a result, the light L4 transmitted through the open portion of the window 43c from the bulb 41 is reflected by the portion 46a of the third fixed reflecting surface 46, and
8 illuminates forward slightly below the horizon. As a result, the irradiation pattern shown in FIG. 22B is obtained, the irradiation distance becomes longer on the left side of the center, and the visibility in the traveling direction of the vehicle is improved.

When the vehicle enters the left corner having a small radius of curvature, the driver turns the steering largely to the left, and the vehicle turns on the basis of the steering angle or a signal such as a road condition acquired by car navigation. 23A, the right movable reflecting surface 44b is rotated rightward by the motor 44e in accordance with the traveling direction of.
As shown in (1), the first window 43c is completely opened. As a result, the light from the bulb 41 is
c, is reflected by the portion 46a of the third fixed reflection surface 46, passes through the projection lens 48, and irradiates forward slightly below the horizontal line. As a result, FIG.
The irradiation pattern shown in FIG. 3 (B) is obtained, the irradiation distance becomes longer in a large angle range on the left side of the center, and the visibility in the traveling direction of the vehicle is improved.

When the traveling speed of the vehicle is high, both movable reflecting surfaces 44a and 44b are
As shown in (A), it is located in a completely retracted position,
The windows 43b, 43e, 43c, 43b, 43d are opened. At this time, the movable part 49b of the shutter 49 also moves largely. As a result, the windows 43 b, 43 c, 43 d, and 43 of the first fixed reflection surface 43 exit from the bulb 41.
e, the light beams L3, L4, L5, L6 transmitted through the third fixed reflecting surface 46 are respectively reflected by the respective portions 46b, 46a, 46c, 46d, converged by the projection lens 48, and the movable portion of the shutter 49. When the cutoff shape is changed by the movement of 49b, as a whole, FIG.
The irradiation pattern shown in FIG. 4 (B) is obtained, and the light is irradiated near the center slightly below the horizontal line toward the front. As a result, when the vehicle is traveling at a high speed and the distance from the preceding vehicle is relatively wide, the forward irradiation distance is increased and the visibility in the forward direction is improved. Each part 45a to 45 of the second fixed reflecting surface 45
d, each part 46a to 46d of the third fixed reflecting surface 46
Although they are provided individually, they may be provided integrally.

FIG. 25 and FIG. 26 show the structure of the main part of a fifth embodiment of the vehicular lamp according to the present invention. FIG.
5 and FIG. 26, a vehicle lamp 50 is a headlight of an automobile, and is a vehicle lamp 4 shown in FIGS.
The configuration is almost the same as 0. Therefore, the vehicle lamp 4
The same reference numerals are given to the same components as 0, and the description thereof will be omitted. In FIGS. 25 and 26, the vehicle lighting device 50 includes the respective portions 46 b and 46 of the third fixed reflection surface 46.
a, Lc, L4, L reflected by a, 46c, 46d
5 and L6, the individual projection lenses 51a and 51
1b, 51c and 51d, and fixedly arranged individual shutters 52a, 52b, 52c and 52d, and the movable part 49b of the shutter 49 is omitted. In this case, the projection light L3 by the individual projection lens 51a
However, the light distribution pattern shown in FIG. 15A, the projection light L4 from the individual projection lens 51b, the light distribution pattern shown in FIG. 15B, and the projection light L5, L6 from the individual projection lenses 51c, 51d are 15 (C) and FIG.
It is configured to form the light distribution pattern shown in (D).

According to the vehicle lamp 50 having such a configuration, the light beams L3, L4, L5, and L6 are cut off by the individual shutters 52a, 52b, 52c, and 52d, respectively, and are individually projected. Lens 51a, 51
By being converged by b, 51c, and 51d, the light is emitted forward in the same manner as the lights L1 to L6 in the vehicle lamp 40 of the embodiment. In this manner, according to the vehicle lamp 50, the same irradiation pattern as that of the vehicle lamp 40 is obtained, and since the movable portion 49b of the shutter 49 in the vehicle lamp 40 is unnecessary,
Fewer moving parts can be used, costs can be reduced and maintenance is easier. The cut-off shape may be changed by providing a movable portion 49b in the shutter 49 or the individual shutters 52a to 52d, similarly to the vehicle lamp 40 of the fourth embodiment described above.

FIG. 27 shows the structure of the main part of a sixth embodiment of the vehicular lamp according to the present invention. 27, a vehicle lamp 60 is a headlight of an automobile,
Vehicle lamp 40 of the fourth embodiment shown in FIGS. 2 to 14
The configuration is almost the same. Therefore, the vehicle lighting device 40
The same components as those described above are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 27, the vehicle lighting device 60 has a first fixed reflection surface 43 at a central portion, which has first window portions 43 b and 43.
c, but not the second windows 43d and 43e. Correspondingly, the portions 46c and 46d of the third fixed reflecting surface 46 and the fourth reflecting surfaces 45c and 4d
5d is omitted. The left and right movable reflection surfaces 44 are integrally formed.

According to the vehicle lighting device 60 having such a configuration, for example, when the vehicle enters the right corner, the driver turns the steering wheel to the right side, and the steering angle or the road condition obtained by the car navigation is used. 28, the movable reflecting surface 44 is rotated leftward in accordance with the traveling direction of the vehicle, so that the first window 43b is opened as shown in FIG. At this time, by simultaneously controlling the movable portion 49b of the shutter 49 to largely move leftward, the cutoff shape is changed, and the cutoff on the right side is lifted slightly below the horizontal line toward the front. Become. Thereby, the light L3 transmitted through the window 43b from the bulb 41 is
The light is reflected by the portion 46a of the third fixed reflecting surface 46, passes through the projection lens 48, and is emitted forward slightly below the horizontal line. On the other hand, the light L8 that has passed through the first window portion 43c and has been reflected by the movable reflection surface 44 is reflected by the portion 45a of the second fixed reflection surface 45, and is irradiated downward toward the front. As a result, the irradiation pattern shown in FIG. 28B is obtained, the irradiation distance becomes longer on the right side of the center, and the visibility in the traveling direction of the vehicle is improved.

On the other hand, for example, when the vehicle enters the left corner, the driver turns the steering wheel to the left, and the vehicle turns on the basis of the steering angle or the signal such as the road condition acquired by the car navigation. Since the movable reflection surface 44 rotates to the right according to the traveling direction, the first window 43c is completely opened as shown in FIG. At this time, the movable part 49b of the shutter 49 does not move. Thus, the light L4 transmitted through the window 43c from the bulb 41 is transmitted to the third fixed reflection surface 4
The light is reflected by the portion 46b of FIG. 6, passes through the projection lens 48, and is emitted forward slightly below the horizontal line. On the other hand, the movable reflection surface 44 passes through the first window 43b.
Is reflected by the portion 45b of the second fixed reflection surface 45, and is radiated forward and downward. As a result, the irradiation pattern shown in FIG. 29B is obtained, the irradiation distance becomes longer on the left side from the center, and the visibility in the traveling direction of the vehicle is improved.

In this manner, the vehicle lamp 4 described above is used.
According to 0,50,60, according to the traveling direction of the car,
The left and right movable reflection surfaces 44a or 44b of the movable reflection surfaces 44 are reflected from the portions 46a and 46b of the second fixed reflection surface 46 by being retracted from the insertion position, and the projection lens 48 or the individual projection lens 51a , 51c converge light toward the front of the vehicle and slightly below the horizon in the direction of travel of the vehicle. Thereby, the visibility in the traveling direction of the vehicle is improved by increasing the irradiation distance of the light in the traveling direction of the vehicle.

In the above-described second to sixth embodiments, the vehicular lamp is provided with a plurality of reflecting surfaces including a reflecting surface, but the arrangement of each reflecting surface is as described above. The arrangement is not limited to the arrangement of the embodiment described above, and any other arrangement is possible. For example, when the movable reflection surface such as the reflection surface 25 of the second embodiment is at the retracted position, the movable reflection surface is The reflection surface that shields from the light source is not limited to the reflection surface, but may be a coating member or the like that has been subjected to an internal reflection prevention process. Further, the number of reflecting surfaces is not limited to these, and other configurations such as omitting the reflecting surface 45 and the like in the fourth embodiment are possible. Further, for example, a window provided on a covering member that shields the movable reflecting surface from the light source when the movable reflecting surface such as the reflecting surface 43 of the fourth embodiment is in the retracted position, for example, the window in the fourth embodiment 43a to 43e and the like may be provided individually, or may be integrally formed as a whole, and further, a notch may be provided instead of the window.

FIGS. 30 and 31 show the structure of the main part of a seventh embodiment of the vehicular lamp according to the present invention. FIG.
In FIGS. 0 and 31, a vehicle lamp 70 is a headlight of an automobile, and has substantially the same configuration as the vehicle lamp 50 of the fifth embodiment shown in FIGS. 25 and 26. Therefore, the same components as those of the vehicle lamp 50 are denoted by the same reference numerals, and description thereof will be omitted. 30 and 31, each movable reflecting surface 74 corresponding to each hole H1 to H4.
Move to open the holes H1 to H4, and illuminate the holes H1 to H4.
Is provided.

Each of the reflecting surfaces E1 to E4 forms an elliptical reflecting surface such that the first focal point is located near the light emitting position 41b of the light source 41 and the second focal point is located at the focal position of the individual reflecting surfaces 73a to 73d. are doing. The individual reflecting surfaces 73a to 73d are each formed as a paraboloid of revolution, and emit light L3, L4, L5, and L6, which are substantially parallel light, toward the front of the lamp.

Further, between the reflection surfaces E1 to E4 and the individual reflection surfaces 73a to 73d, individual fixed shutters 72a to 72d are provided, respectively, so as to have a predetermined light distribution pattern shape, for example, a fifth light distribution pattern. In this embodiment, a light distribution pattern having the same shape as the light distribution pattern projected by the individual projection lenses 51a to 51d is defined. Accordingly, a predetermined light distribution pattern can be obtained by moving the movable reflection surface 74 without providing a movable portion in the shutter 49 of the main optical path.

[0115]

As described above, according to the present invention, the cut-off shape can be changed by moving the movable portion of the shutter in the lateral direction. Makes it possible to increase the irradiation distance, improves the visibility in front of the corner, and moves the movable part in the horizontal direction, thereby suppressing the vertical movement of the cutoff of the irradiation light. , A high-precision cutoff can be formed.

Further, according to the present invention, when the movable reflecting surface starts to evacuate from the area of the window corresponding to the fixed reflecting surface by rotating and moving in the lateral direction in accordance with the traveling direction of the automobile, A portion of the light traveling from the fixed reflecting surface toward each window portion is transmitted through the window portion and reflected by the third fixed reflecting surface,
When the light is incident on the projection lens, the light is emitted to a position below the horizon in a direction slightly deviated toward the traveling direction of the vehicle toward the front. As a result, the irradiation distance of the headlight in the direction in which the light travels is increased, and the visibility in the traveling direction of the vehicle is improved. Furthermore, when each movable reflecting surface is rotated in the lateral direction in accordance with the traveling direction of the automobile and completely retracted from the area of the corresponding window portion of the fixed reflecting surface, the light source is moved to each window of the fixed reflecting surface. All of the incoming light is transmitted through the window and reflected by the third fixed reflective surface,
When the light is incident on the projection lens, the light is irradiated below the horizontal line in a direction slightly deviated toward the traveling direction of the vehicle toward the front. Thereby, the illuminance of the headlight in the direction in which the light travels is increased, and the visibility in the traveling direction of the vehicle is further improved.

As described above, according to the present invention, with a simple structure, the dazzling light is not given to the preceding vehicle.
The irradiation distance on the opposite lane side can be lengthened,
It is possible to provide a vehicular lamp capable of irradiating a sufficiently bright light in the traveling direction of the vehicle when turning right or left or running in a corner.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a first embodiment of a vehicular lamp according to the present invention.

FIG. 2 is a plan view of the vehicular lamp of FIG.

FIG. 3 is a side view of the vehicular lamp of FIG. 1;

4A is a front view of the shutter when the movable portion of the shutter is in the insertion position in the vehicle lamp of FIG. 1; FIG.
It is a light distribution characteristic of irradiation light and (C) a road surface light distribution characteristic.

FIG. 5A is a front view of the shutter when the movable portion of the shutter in the vehicle lamp of FIG.
(B) Light distribution characteristics of irradiation light and (C) Road surface light distribution characteristics.

FIG. 6A is a front view of the shutter when the movable portion of the shutter in the vehicle lamp of FIG. 1 has moved to a retracted position;
(B) Light distribution characteristics of irradiation light and (C) Road surface light distribution characteristics.

FIG. 7 is a schematic perspective view showing a second embodiment of the vehicular lamp according to the present invention.

FIG. 8 is a schematic plan view of the vehicular lamp of FIG. 7;

FIG. 9 shows the orientation characteristics of each reflecting surface of the vehicular lamp of FIG. 7;

FIG. 10 is a schematic perspective view showing a third embodiment of the vehicular lamp according to the present invention.

FIG. 11 shows the orientation characteristics of each reflecting surface of the vehicular lamp of FIG.

FIG. 12 is a schematic perspective view showing a fourth embodiment of the vehicular lamp according to the present invention.

FIG. 13 is a side view of the vehicle lamp of FIG.

FIG. 14 is a front view of a main part of the vehicular lamp of FIG.

FIG. 15 is a schematic perspective view showing a configuration example of a driving mechanism of a movable reflection surface in the vehicle lamp of FIG.

FIG. 16 shows light distribution characteristics of (A) fixed light by a projection lens and (B) fixed light by a fixed reflection surface and a second fixed reflection surface in the vehicle lamp of FIG.

17 shows light distribution characteristics of lights L3 to L6 by a third fixed reflection surface in the vehicle lamp of FIG.

18 shows light distribution characteristics of light L7 to L10 by the movable reflection surface and the fifth and seventh reflection surfaces in the vehicle lamp of FIG.

19A and 19B are diagrams illustrating (A) the position of the movable reflection surface and (B) the screen orientation characteristics of the vehicle lamp of FIG.

20A and 20B are diagrams illustrating (A) the position of the movable reflection surface and (B) the screen orientation characteristics of the vehicular lamp of FIG. 12 when the vehicle is running at the right corner with a large radius of curvature at a middle speed.

21A and 21B are diagrams illustrating (A) the position of the movable reflection surface and (B) the screen orientation characteristics of the vehicular lamp of FIG. 12 when the vehicle is traveling in the right corner with a small radius of curvature at medium speed.

22A and 22B are diagrams illustrating (A) the position of the movable reflection surface and (B) the screen orientation characteristics of the vehicle lamp of FIG. 12 when the vehicle is traveling in the left corner with a large radius of curvature at a middle speed.

23A and 23B are diagrams illustrating (A) the position of the movable reflection surface and (B) the screen orientation characteristics when the vehicle lamp of FIG. 12 is running at the middle speed at the left corner with a small radius of curvature.

24A and 24B are diagrams showing (A) the position of the movable reflection surface and (B) the screen orientation characteristics of the vehicle lamp of FIG. 12 during high-speed running.

FIG. 25 is a side view showing a fifth embodiment of the vehicular lamp according to the present invention.

26 is a front view of a main part of the vehicular lamp of FIG. 25.

FIG. 27 (A) Position of movable reflection surface and (B) during straight running in the sixth embodiment of the vehicle lamp according to the present invention.
FIG. 4 is a diagram showing an orientation characteristic.

28A and 28B are diagrams illustrating (A) the position of the movable reflection surface and (B) the orientation characteristics of the vehicular lamp of FIG. 27 when traveling at the right corner.

29A and 29B are diagrams illustrating (A) the position of the movable reflection surface and (B) the orientation characteristics when the vehicle lamp of FIG.

FIG. 30 is a side view showing a seventh embodiment of the vehicular lamp according to the present invention.

FIG. 31 is a front view of a main part of the vehicular lamp of FIG. 30;

FIG. 32 is a diagram showing light distribution characteristics and a restricted range in a conventional vehicle lamp.

[Explanation of symbols]

10, 20, 60, 70 Vehicle lamp 11, 21 Bulb 12, 22 Main reflection surface 13, 28 Projection lens 14, 29 Shutter 15, 30 Fixed portion 16, 31, Movable portion 17 Drive portion 23 First reflection surface 24 First Second reflective surface 25 Third reflective surface 26 Fourth reflective surface 27 Fifth reflective surface 40 Vehicle light 41 Bulb 42 Main reflective surface 43 First fixed reflective surface (Sixth reflective surface) 43a Center hole 43b , 13c, 13d, 13e Window portion 44 Movable reflective surface (first reflective surface) 44a Left movable reflective surface 44b Right movable reflective surface 45 Second fixed reflective surface (second reflective surface, fourth reflective surface) 45a, 45b portion (second reflecting surface) 45c, 45d portion (fourth reflecting surface) 46 third fixed reflecting surface (third reflecting surface, fifth reflecting surface) 46b, 46c portion (third reflecting surface) Reflective surface) 46a, 4 d portion (fifth reflecting surface) 48 projection lens 49 shutter 49a fixed portion 49b movable unit 50 vehicle lamp 51a, 51b, 51c, 51d individual projection lenses 32a, 32b, 32c, 32d individually shutter

────────────────────────────────────────────────── ─── of the front page continued (51) Int.Cl ⁷ identification mark FI theme Court Bu (reference) F21Y 101:. 00

Claims (10)

[Claims] 1. A light source, a reflecting surface for reflecting light from the light source toward the front, a projection lens for converging light from the light source or the reflecting surface, and a projection lens disposed in an optical path from the light source to the projection lens. In a projector-type vehicular lamp including a shutter that partially blocks the shutter, the shutter is at least partially overlapped with the fixed portion that is fixedly arranged, and is movable in the lateral direction from the insertion position. And a movable portion supported by the movable portion, wherein the movable portion is moved relative to the fixed portion, thereby changing a shape of the projected light distribution pattern near a horizontal line. Lights. 2. A light source, a main reflection surface for reflecting light from the light source forward, a projection lens for converging light from the light source and / or the main reflection surface, and projection from the light source and / or the main reflection surface A shutter disposed in the main optical path to the lens and blocking a part of the main optical path, a projector-type vehicular lamp including, in addition to the main reflecting surface, further irradiating light emitted from a light source forward. It has at least a first and a second reflecting surface constituting a sub optical path, and the first reflecting surface is a concave reflecting surface on the side of a light source provided with an opening or a cutout for passing light of the main optical path. Is formed so as to reflect light from a light source and / or a main reflection surface toward a second reflection surface, wherein the second reflection surface is a concave reflection surface toward the front of the lamp. Reflected by the first reflective surface The shutter is formed so as to reflect light from the light source toward a region below the front horizontal line, wherein the shutter is at least partially overlapped with the fixed portion arranged and fixed, and is laterally moved from the insertion position. A movable portion supported movably in the direction, and the movable portion is moved relative to the fixed portion, thereby changing a shape of a light distribution pattern projected through the main optical path near a horizontal line. A vehicle lighting device, characterized in that: 3. A light source, a main reflection surface for reflecting light from the light source toward the front, a projection lens for focusing light from the light source and / or the main reflection surface, and projection from the light source and / or the main reflection surface. A shutter disposed in the main optical path to the lens and blocking a part of the main optical path, a projector-type vehicular lamp including, in addition to the main reflecting surface, further irradiating light emitted from a light source forward. A first sub-optical path for reflecting light from the light source and / or the main reflecting surface toward the front, the first sub-optical path comprising at least three reflecting surfaces constituting a sub-optical path and a covering member; The covering member is a reflecting surface concave on the plateau side provided with an opening or a cutout for transmitting the light in the main light path, and the light in the sub light path heading toward the first reflecting surface. Through the opening or A notch portion, and a second reflecting surface is arranged so as to be insertable into and removable from the sub-optical path, and is configured as a movable reflecting surface positioned in a shadow area of the covering member when retracted from the sub-optical path. And a third reflecting surface that, when the movable reflecting surface is inserted into the sub optical path, reflects light from the light source reflected by the movable reflecting surface in a different direction. By forming a sub optical path, the light reflected by the third reflection surface passes through the projection lens, or is radiated forward without passing, and the movable reflection surface moves, A vehicular lamp characterized in that the shape or brightness balance of a light distribution pattern is changed by switching between a first sub optical path and a second sub optical path. 4. An inner surface of the covering member is configured as a reflecting surface, and light reflected by the covering member is reflected by another reflecting surface or a third reflecting surface that is concave toward the front of the lamp. The reflected light passes through the projection lens, or is irradiated forward without passing through,
The vehicle lamp according to claim 3. 5. The fixing device according to claim 1, wherein the shutter is at least partially overlapped with a fixed portion fixedly arranged, and
A movable part instructed to be movable laterally from the insertion position,
Wherein the movable portion is moved relative to the fixed portion to change the shape of the light distribution pattern projected through the main optical path in the vicinity of the horizontal line. The vehicle lighting device according to the above. 6. A part of the light of the second sub optical path reflected by the third reflecting surface is blocked by an individual shutter forming a shape near a horizontal line of the light distribution pattern,
4. A cut-off shape is formed.
Or the vehicular lamp according to 4. 7. A fixed portion of the shutter defines an upper end on one side of a cutoff shape of a light distribution pattern of irradiation light, and a movable portion of the shutter has a vicinity of a cutoff center of irradiation light at an insertion position. The vehicular lamp according to any one of claims 1, 2, and 5, wherein an inclined portion descending toward the other side and a horizontal portion continuous with the inclined portion are defined. 8. The camera according to claim 1, wherein at least a movable portion of the shutter is formed in a concave shape toward the projection lens, and the movable portion is swingably supported around a vertical axis on the projection lens side. Claims 1, 2, 5
Or the vehicular lamp according to any of 7. 9. The device according to claim 7, further comprising a return spring for urging the movable portion of the shutter to the insertion position, and a stopper for locking the shutter at the insertion position. Vehicle lighting fixtures. 10. The light distribution pattern of the light distribution pattern is obtained by moving a movable portion of the shutter and / or the movable reflection surface based on a steering angle and / or a signal such as a road condition acquired by car navigation. The vehicular lamp according to any one of claims 1 to 9, wherein a shape or a brightness balance is changed.