JPH0410162B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The vehicle headlamp of the present invention will be explained in accordance with the following items.

A. Field of industrial application B. Summary of the invention C. Prior art [Figures 13 and 14] D. Problems to be solved by the invention [Figures 13 to 16] E. Means for solving the problems F Examples [Fig. 1 to 12] a Reflector [Fig. 1 to 4, Fig. 6 to 8, Fig. 11] b Support part [Fig. 1 to 5, Fig. 7] , 8th
Figures, Figure 10] c Lens support frame [Figures 1 to 5, Figure 7
Figures, Figures 8 and 10] d Condensing lens [Figures 1 to 5, Figure 7,
8, 11] e Light shielding body [Fig. 2, 7, 11] f Drive unit [Fig. 1 to 3, Fig. 5 to 10] f-1 Cam plate [ Figures 1 to 3, Figure 10
] f-2 Tilt plate [Figures 1 to 3, Figures 7 to 10] f-3 Solenoid [Figures 1 to 3, Figures 7
Figures, Figure 8] f-4 Tilt plate stopper [Figures 1 to 3
Figures, Figures 6, 7, and 10] f-5 Lens support frame stopper [Figures 1 to 3, Figure 10] f-6 Connecting link [Figures 1 to 3, Figure 1
[Figure 0] g Operation [Figures 10 to 12] h Reflective surface G that can be used in the vehicle headlamp of the present invention Effects of the invention (A Industrial application field) The present invention is a novel vehicle headlamp Regarding. especially,
It is an object of the present invention to provide a novel vehicle headlight that is suitable as a vehicle headlight, can emit two types of beams, a passing beam and a running beam, and exhibits an extremely good light distribution pattern. That is.

(B. Summary of the Invention) The vehicle headlamp of the present invention transmits reflected light from a light source located at a first position to a second light source located in front of the first position.
a reflecting mirror having a reflecting surface that condenses light in a dotted manner or in a line extending substantially horizontally at a position, a light shielding body whose upper light shielding edge is located near the second position, and a front side of the light shielding body. and a condenser lens located at the light shielding body and having a focal point near the light shielding edge of the light shielding body, the light shielding body and the condensing lens are integrally rotatable with respect to the reflecting mirror, and the light shielding edge of the light shielding body is approximately at the second The passing beam is emitted when the light shielding edge is at the second position, and the traveling beam is emitted when the light shielding edge is lower than the second position.

As a result, one vehicle headlamp can emit two types of beams, a passing beam and a running beam, and an extremely good light distribution pattern can be obtained.

(C Prior Art) [Figures 13 and 14] Reflected light from a light source located at a first position is reflected at a second position ahead of the first position in a dotted manner or in a line extending approximately horizontally. a reflecting mirror having a reflective surface that condenses light into a shape, a light shielding body whose upper light shielding edge is located near the second position, and a light shielding body located in front of the light shielding body and focusing near the light shielding edge of the light shielding body. There is a vehicle headlamp equipped with a condensing lens.

Such a vehicle headlamp is designed as shown in FIG.

In the figure, a is a reflecting mirror having a reflecting surface b in the shape of an ellipsoid of revolution.

c is a light source placed at the first focal point _F1 of the reflective surface b. Therefore, the lights d _, d, .

e is a light-shielding body, and its light-shielding edge f is located near the second focal point _F2 of the reflecting surface b. In this figure, the light-shielding edge f is located slightly behind the second focal point _F2 , that is, closer to the first focal point _F1 . Therefore,
Among the reflected lights d, d, ..., the light d ₁ reflected at the center of the reflective surface b and the light d ₂ reflected at the upper half of the reflective surface b are emitted forward without being obstructed by the light shield e. However, the light d ₃ reflected by the lower half of the reflecting surface b is blocked by the light shielding body e, so that it is not emitted forward.

Reference character g denotes a condensing lens in the shape of a convex lens, which is positioned in front of the light shielding body e, and its focal point F _C is located approximately on the light shielding edge f of the light shielding body e.

Therefore, the light reflected at the center in the vertical direction of the reflective surface b (light including d ₁ ) is transmitted through substantially the center in the vertical direction of the condensing lens g, and is hardly deflected in the vertical direction. Moreover, since some of them are blocked by the light-shielding edge f of the light-shielding body e, a cut line _h1 having a shape similar to the shape of the light-shielding edge f is formed at the upper edge of the light distribution pattern h shown in FIG. Also, the light reflected by the upper half of reflective surface b (d ₂
(including
A portion _h2 is formed that extends downward from _h1 .

In the above manner, a so-called passing beam light distribution pattern h is formed, and the light distribution pattern h is formed along the cut line at the upper edge of the light distribution pattern h.
Since the h ₁ is extremely sharply shaped, it does not emit upward light that would dazzle the drivers of oncoming vehicles, and it still provides the light necessary to see the road ahead of the car, making it extremely good. It has a light distribution pattern.

(D Problems to be solved by the invention) [No. 13
Figures to Figures 16] As mentioned above, with the vehicle headlight shown in Figure 13, an extremely good light distribution pattern can be obtained as a passing beam, but with this alone, only a passing beam can be obtained. However, there is a problem in that the vehicle also requires a vehicle headlight for the running beam.

Therefore, in view of the fact that the light _d3 reflected on the lower half of the reflective surface b is blocked by the light shield e, the inventor made the light shield e movable up and down, and irradiated the traveling beam. When doing so, we considered moving the light shield e downward (see Fig. 15).

Then, the light _d3 reflected by the lower half of the reflective surface b is also irradiated forward through the condenser lens g, so that a light distribution pattern j as shown in FIG. 16 can be obtained, and this light distribution The entire outline of pattern j is suitable as a light distribution pattern of the traveling beam.

However, the light distribution pattern h of the above-mentioned passing beams is changed from this light distribution pattern j to the two-dot chain line k.
(This is a line corresponding to the shading edge f of the shading body e.) It is formed by cutting the upper part from the shading edge f of the shading body e, and when it comes to the light distribution pattern of the passing beam, it is located in the highest luminous intensity zone, the so-called hot zone. must be below the horizontal line H-H lying approximately at the height of the headlights, so in the light distribution pattern j in Fig. 16, the hot zone l is too low for the light distribution pattern of the driving beam. There is a problem with becoming.

E Means for Solving the Problems In order to solve the above-mentioned problems, the vehicle headlamp of the present invention directs the reflected light from the light source located at the first position to the light source located in front of the first position. a reflecting mirror having a reflective surface that condenses light in a dotted manner or in a linearly extending substantially horizontal direction at the position No. 2;
A light shielding body located near the position of the light shielding body, and a condensing lens located in front of the light shielding body and having a focal point near the light shielding edge of the light shielding body, the light shielding body and the condensing lens are integrally formed with respect to the reflecting mirror. The passing beam is emitted when the light-shielding edge of the light-shielding body is at approximately the second position, and the traveling beam is emitted when the light-shielding edge is below the second position. It is something.

Therefore, in the vehicle headlamp of the present invention, not only can the passing beam be irradiated with a good light distribution pattern, but also the light shield can be rotated to move downward. This makes it possible to irradiate the light reflected on the lower half of the reflective surface, and furthermore, since the condensing lens is tilted slightly upward at this time, it passes through this condensing lens and illuminates the front. The direction of the light irradiated on the beam is corrected slightly upward compared to when the beam is irradiated, so
A hot zone in the light distribution pattern appears approximately at the center, making it a suitable light distribution pattern for the traveling beam.

(Embodiment F) [Figures 1 to 12] Details of the vehicle headlamp of the present invention will be described below with reference to illustrated embodiments.

The illustrated embodiment 1 is an example in which the present invention is applied to an automobile headlamp.

(a Reflector) [Figures 1 to 4, Figures 6 to 8, and Figure 11] Reference numeral 2 denotes a reflector, which is made of aluminum die-casting. The reflecting mirror 2 has a spheroidal reflecting surface 3, and a light bulb mounting hole 4 is formed in the center of the rear part.

5 is a light bulb support plate, and a halogen light bulb 6 is detachably supported on the light bulb support plate 5. A glass bulb 7 of a halogen light bulb 6 has a light shielding film 8 formed on its front end.

Thus, the halogen light bulb 6 is inserted into the reflector 2 through the light bulb attachment hole 4, and the light bulb support plate 5 is attached to the reflector 2 while covering the light bulb attachment hole 4. The filament 6a of the light bulb 6 is positioned at the first focal point _F1 of the reflective surface 3. Therefore, the light emitted from the filament 6a of the light bulb 6 is reflected by the reflective surface 3 and focused on the second focal point _F2 of the reflective surface 3.
Note that the light that is not directed toward the reflective surface 3 but directly forward is blocked by a light shielding film 8 provided on the front end of the glass bulb 7.

(b Support part) [Figures 1 to 5, Figures 7, 8, and 10] 9 is a flange protruding outward from the front edge of the reflector 2, and the outer periphery seen from the front. is rectangular in shape.

Support plates 10 and 10' are fixed to the flange 9 at their rear edges so as to project forward from both left and right edges of the flange 9. Therefore, these support plates 10, 10' are opposed to each other so as to be spaced apart from each other in the left and right directions and to be parallel to each other.

In the center portions of these support plates 10, 10', long rectangular holes 11, 11' are formed in the front and rear.

Reference numeral 12 denotes a reinforcing plate, whose both side edges are connected to the lower ends of the supporting plates 10, 10'.

(c Lens support frame) [Figures 1 to 5, 7
8 and 10] Reference numeral 13 denotes a lens support frame having a short cylindrical shape, and two arm pieces 14, 14' projecting rearward from both left and right sides of the frame are formed.

The lens support frame 13 is attached to the arm pieces 14 and 1.
The support plates 10, 10' are rotatably supported by shafts 15, 15' near the protruding portions 4' of the support plates 10, 10'.

The rear most part of the right arm piece 14 is located at a position corresponding to the hole 11 formed in the right support plate 10.

(d Condensing lens) [Figures 1 to 5, Figure 7,
8 and 11] 16 is a condensing lens in the shape of a convex lens;
It is supported by the lens support frame 13. The condenser lens 16 is rotated by the rotation shafts 15, 1.
It is located slightly anterior to 5'.

(e Light shield) [Figures 2, 7, and 11] Reference numeral 17 denotes a light shield support base, which is provided in a bridging manner between the lower edges of the arm pieces 14 and 14' of the lens support frame 13. There is.

Reference numeral 18 denotes a light shielding body fixedly supported on the upper surface of the support base 17, and its upper edge 19 is used as a light shielding edge. The positional relationship between the condenser lens 16 and the light shield 18 is defined such that the center of the light shield edge 19 is located at the focal point F _C of the condenser lens 16 . Further, the second focal point F ₂ of the reflective surface 3 is located near the center of this light-shielding edge 19 .

Furthermore, the light-shielding edge 19 is curved in the horizontal direction so as to approximately fit a curve obtained by cutting the curvature of field surface of the condenser lens 16 in the horizontal direction.

(f Drive unit) [Figures 1 to 3, Figures 5 to 10] (f-1 Cam plate) [Figures 1 to 3, Figures 10
20 is a cam plate, which is fixed to a portion of the right arm piece 14 of the lens support frame 13 at a location corresponding to the hole 11 of the support plate 10, and is positioned within the hole 11 with a margin.

Further, a cam groove 21 having a substantially "H" shape is formed on the outer surface of the cam plate 20. Furthermore, two engagement recesses 22a and 22b are formed on the rear end surface of the cam plate 20, vertically slightly spaced apart from each other.

(f-2 tilting plate) [Figures 1 to 3, Figures 7 to 10] Reference numeral 23 is a tilting plate, and the part near the lower end of the tilting plate rotates to the lower part of the hole 11 of the support plate 10. freely supported.

Reference numeral 24 denotes a tension coil spring, which is tensioned between the lower end of the tilting plate 23 and a locking pin 25 protruding from the front side of the support plate 10. A moving force is applied to move the upper end portion toward the rear.

A support pin 26 is provided at the upper end of the tilting plate 23 to protrude leftward.
A roller 27 is rotatably supported at the tip of the
The roller 27 is rotatably engaged with a cam groove 21 formed in the cam plate 20.

Therefore, when the tilting plate 23 tilts, the rollers 27
As a result, the position of the cam plate 20 in the vertical direction changes, and the lens support frame 13
will be forced to tilt. That is, when the roller 27 is engaged with the rear end portion 21a of the cam groove 21, the lens support frame 13 is positioned so that the light-shielding edge 19 of the light-shielding body 18 supported thereon is very close to the second focal point _F2 of the reflective surface 3. The rollers 27 are held close to each other in the cam groove 21.
When engaged near the bent portion 21b of the cam plate 20
As the position of the lens support frame 13 moves downward, the lens support frame 13 is tilted upward, and the light-shielding edge 19 of the light-shielding body 18 supported by it is several millimeters away from the second focal point F2 of the reflective surface ₃ . move downwards. Conversely, the condensing lens 16 in front is tilted slightly upward by the rotational supports 15, 15' of the lens support frame 13, and is tilted so that its optical axis x-x is slightly raised forward. .

An endless cam groove 28 is provided on the outer surface of the tilting plate 23.
is formed. The cam groove 28 has a shape approximately like a flower petal turned sideways. That is, a first portion 28a that draws a gentle hill-shaped arc from the front end and extends to the rear;
a second portion 28b extending slightly obliquely forward and downward from the rear end and having a length returning to the front approximately one-third of the length of the first portion 28a;
a third portion 28c extending slightly obliquely rearward and downward from the front end of the portion 28b and having substantially the same length as the second portion 28b;
A fourth portion extends in a gentle concave arc connecting the rear end of the first portion 8c and the front end of the first portion 28a.
It consists of a portion 28d.

If the opening side of the cam groove 28 is the top and the bottom side is the bottom, then as shown in FIG. 9B, 28a → 28b → 28c → 28d → 28
If the direction of movement is the forward direction, each portion 28a, 28b, 28c and 28d is
It is sloped so that it is low at the starting end and high at the terminal end, and each part 28a, 28b, 2
A slope descending in the forward direction is formed between 8c and 28d. That is, the first part 2
Between 8a and the second portion 28b is a slope 29a that slopes downward toward the second portion 28.
Between the second portion 28b and the third portion 28c there is a slope 29b that slopes downward toward the third portion 28c, and between the third portion 28c and the fourth portion 28d there is a slope 29b that slopes downward toward the third portion 28c. A slope 29c that slopes downward toward the fourth portion 28d, and a slope 29c that slopes downward toward the first portion 28a between the fourth portion 28d and the first portion 28a.
9d are formed respectively.

(f-3 Solenoid) [Figs. 1 to 3, 7, and 8] 30 is a bracket protruding from the right side of the front end of the reflector 2, and a solenoid is attached to the outer end of the bracket 30. 31 is supported. When the solenoid 31 is energized, the plunger 32 protruding from the rear end of the main body 31a is drawn into the main body 31a, and when the solenoid 31 is demagnetized, the plunger 32 is pulled into the rear end of the main body 31a by a spring built in the main body 31a. It is becoming more and more prominent.

A connecting rod 33 is connected to the inner end of the plunger 32 and projects from the front end of the main body 31a of the solenoid 31. Therefore, the connecting rod 33 is largely projected forward when the solenoid 31 is energized, and the amount of forward projection is reduced when the solenoid 31 is demagnetized.

34 is an operating block, the main part 34
a is connected to the front end of the connecting rod 33.

Reference numeral 35 designates a first connecting portion of the actuating block 34, which projects forward from the main portion 34a and has a connecting hole 35 that is long in the front-rear direction. And this connecting hole 35a
A connecting pin 36 that projects outwardly above the rotational fulcrum of the tilting plate 23 is slidably engaged with the connecting pin 36 .

Reference numeral 37 designates a second connecting portion of the actuating block 34, which projects downward from the main portion 34a. Reference numeral 38 denotes a locking pin protruding outward from the second connecting portion 37, and the locking pin 38 and the locking pin 38 projecting outward from the rear end of the lower end of the bracket 30. A tension coil spring 40 is tensioned between the pin 39 and the pin 39 . Therefore, the actuating block 34 is biased by the tension coil spring 40 with a moving force to move it rearward.

(f-4 tilting plate stopper) [Figures 1 to 3
6, 7, and 10] Reference numeral 41 denotes a tilting plate stopper, which is used to alternately stop the tilting plate 23 at two predetermined positions.

The tilting plate stopper 41 is made by bending both ends of a metal rod in the same direction, with a bent portion 42 at the rear end.
serves as a support end, and is inserted into a support hole 43 formed above the portion of the outer surface of the bracket 30 where the solenoid 31 is supported. Rotatably supported. Further, the bent portion 44 at the front end serves as an engaging portion, and its tip engages in the cam groove 28 of the tilting plate 23 in a slidable manner.

Reference numeral 45 denotes a leaf spring, whose base end is supported by a support protrusion 46 provided on the right support plate 10, and whose front end is supported by the tilt plate 4.
It is in elastic contact with the middle part of 1 from the outside. Therefore, the tip of the engaging portion 44 of the tilting plate stopper 41 is in elastic contact with the bottom surface of the cam groove 28 of the tilting plate 23.

Therefore, the engaging portion 44 of the tilting plate stopper 41 is connected to a point 47a (hereinafter referred to as "first engagement point") where the first portion 28a and the fourth portion 28d of the cam groove 28 of the tilting plate 23 are connected. To tell.)
The tilting plate 23 changes from the state in which it is engaged with the first
When rotated counterclockwise in figure 0,
The engaging portion 44 of the tilting plate stopper 41 moves backward through the first portion 28a of the cam groove 28 to the rear end, and slides down the slope 29a continuous to the rear end of the first portion 28a (Fig. 10). B
reference). At this time, since there is a slope 29d between the first part 28a and the fourth part 28d of the cam groove 28, which is higher on the fourth part 28d side (located on the opening side), the engagement is not possible. Section 44
does not move along the fourth portion 28d.

Then, when the force that was rotating the tilting plate 23 in the counterclockwise direction disappears, the tilting plate 23 is rotated in the clockwise direction by the tensile force of the tension coil spring 24. Therefore, this time,
The engaging portion 44 of the tilting plate stopper 41 moves along the second portion 28b of the cam groove 28 from the rear end to the front end, slides down the slope 29b continuous thereto at the front end of the second portion 28b, and slides down the slope 29b continuous with the front end of the second portion 28b.
A point 47b where the portion 28b and the third portion 28c are connected (hereinafter referred to as the "second engagement point").
(see Figure 10C). At this time, since there is a slope 29a between the first portion 28a and the second portion 28b of the cam groove 28 that is higher on the first portion 28a side, the engaging portion 4
4 does not move along the first portion 28a.

When the tilting plate 23 is next rotated counterclockwise, the engaging portion 44 of the tilting plate stopper 41
moves along the third portion 28c of the cam groove 28 from the front end to the rear end, and when it reaches the rear end, slides down the slope 29c (see FIG. 10D).
At this time, the second portion 28 is located between the third portion 28b and the third portion 28c of the cam groove 28.
Since there is a high slope 29b on the b side, the engaging portion 44 does not move along the second portion 28b.

Then, when the force that was rotating the tilting plate 23 in the counterclockwise direction disappears, the tilting plate 23 is rotated in the clockwise direction by the tensile force of the tension coil spring 24. Therefore, the engaging portion 44 of the tilt plate stopper 41 moves from the rear end to the front end of the fourth portion 28d of the cam groove 28, slides down the slope 29d at the front end, and engages with the first engaging point 47a. (1st
(See Figure A). At this time, the third
Between the portion 28c and the fourth portion 28d, there is a slope 29 that is higher on the third portion 28c side.
c, the engaging portion 44 is connected to the third portion 28
It does not move along direction c.

Then, the engaging portion 4 of the tilting plate stopper 41
4 is engaged with the first engagement point 47a of the cam groove 28 of the tilting plate 23, the roller 27 of the tilting plate 23 is engaged with the right arm piece 1 of the lens support frame 13.
4 (see FIG. 10A), and therefore, the condenser lens 16 and the light shield 1
8 is the posture for irradiating the passing beam, that is,
The optical axis x-x of the condensing lens 16 substantially coincides with the optical axis x-x of the reflecting mirror 2, and the light-shielding edge 1 of the light-shielding body 18
9 is placed in a position close to the second focal point F ₂ of the reflective surface 3 (see FIG. 11A). Further, the engaging portion 44 of the tilting plate stopper 41 is connected to the tilting plate 2.
In the state where the roller 27 of the tilting plate 23 is engaged with the second engagement point 47b of the cam groove 28 of No. 3, the roller 27 of the tilting plate 23 is engaged with the vicinity of the bent portion 21b of the cam groove 21 of the cam plate 20 (see FIG. C), therefore,
The condensing lens 16 and the light shielding body 18 are arranged in a posture in which the traveling beam is irradiated, that is, the optical axis x-x of the condensing lens 16 is inclined slightly forwardly upward with respect to the optical axis x-x of the reflecting mirror 2, and the light shielding body 18 shading edges 19
is held in a position moving downward from the second focal point _F2 of the reflective surface 3 (see FIG. 11B).

(f-5 Lens support frame stopper) [Figures 1 to 3, Figure 10] 48 is a lens support frame stopper, in which a stopper pin 49 and a guide pin 50 are vertically spaced apart from the base 51 and lined up in parallel. It is protruded towards the front in an open position. A conical engagement protrusion 49a is protruded from the tip of the stopper pin 49.

52a and 52b are guide holes, and the reflecting mirror 2
The bracket 30 is formed so as to pass through the right side of the flange 9 and the bracket 30 in the front-rear direction. Further, the upper guide hole 52a except for the rear end is opened laterally through a slit 53.

The stopper pin 49 is slidably inserted into the upper guide hole 52a, and the guide pin 50 is slidably inserted into the lower guide hole 52b from the rear. The tip of the stopper pin 49 projects forward from the front end of the guide hole 52a.

Then, when the lens support frame 13 is in a state where it irradiates the passing beam, the engagement protrusion 49a of the stopper pin 49 engages the lens support frame 1.
It engages with the lower engagement recess 22b formed on the rear end surface of the cam plate 20 attached to the arm piece 14 of No. 3, so that the posture of the lens support frame 13 is maintained in that state, and , lens support frame 13
When the is in the state of irradiating the traveling beam,
The engagement protrusion 49a engages with the upper engagement recess 22a, so that the attitude of the lens support frame 13 is maintained in that state.

(f-6 Connecting link) [Figures 1 to 3, and 10] Reference numeral 54 denotes a connecting link, which connects the actuating block 34 and the stopper pin 49 so that the movement of the actuating block 34 is controlled by the stopper pin 49. It is something that can be conveyed to people.

A portion of the connecting link 54 near its lower end is rotatably supported by a rotation shaft 55 at a position near the lower end of the rear end of the right support plate 10 . The lower end of the connecting link 54 is rotatably connected to the second connecting portion 27 of the actuating block 34 via a connecting pin 56. Therefore, the connecting link 54 is connected to the actuating block 34.
As a result of this movement, it is rotated about the rotation shaft 55.

Further, a vertically long connecting hole 57 is formed at the upper end of the connecting link 54, and a connecting pin 58 protruding from the right side of the stopper pin 49 is slidably engaged with the connecting hole 57. ing.

Therefore, when the actuation block 34 is in the retracted position, the engagement protrusion 49a of the stopper pin 49 engages the engagement recess 22a or 2 of the cam plate 20.
2b, when the actuating block 34 moves forward, the connecting link 54 rotates clockwise in FIG. 10, so that the connecting hole 57 at its upper end moves approximately rearward. Therefore, the connecting pin 58 provided in the light shielding body 49 is pressed rearward by the front edge of the connecting hole 57, so that the stopper pin 49,
That is, the lens support frame stopper 48 moves rearward. At this time, the connecting pin 58 moves rearward along the slit 53 communicating with the guide hole 52a. And solenoid 31
is demagnetized and the actuating block 34 retreats, the connecting link 54 rotates counterclockwise, thereby the stopper pin 49 is advanced, and its engagement protrusion 49a engages the cam plate 2.
It will be in a state of engagement with the engagement recess 22a or 22b provided at 0.

(g Operation) [Figures 10 to 12] However, in the above automobile headlamp 1, each time the solenoid 31 is energized, the irradiation changes from low beam irradiation to driving beam irradiation, and
The beam irradiation is alternately switched from the traveling beam irradiation to the low beam irradiation.

That is, in the state where the irradiation with the low beam is being performed, the engaging portion 44 of the tilting plate stopper 41
is engaged with the first engagement point 47a of the cam groove 28 of the tilting plate 23, and the roller 27 provided on the tilting plate 23 is engaged with the rear end portion 21a of the cam groove 21 of the cam plate 20. (see FIG. 10A), thereby, the lens support frame 13 allows the optical axis XX of the condensing lens 16 to substantially coincide with the optical axis XX of the reflecting mirror 2, and the light shielding body 18 to block light. The edge 19 is positioned close to the second focal point _F2 of the reflective surface 3 (see FIG. 11A). Therefore, a hot zone 60 whose upper edge 59 is limited by the light-shielding edge 19 of the light-shielding body 18 is irradiated with the passing beam of the light distribution pattern 61 located below the H-H line (the first
(See Figure 2A).

When the solenoid 31 is energized from this state, the actuation block 34 moves forward. As a result, the connecting link 54 is rotated clockwise, the stopper pin 49 is retreated, and its engagement protrusion 49a is disengaged from the engagement recess 22b of the cam plate 20, so that the lock to the lens support frame 13 is released. , since the connecting pin 36 is pressed forward by the rear end of the connecting hole 35a of the first connecting portion 35 of the actuating block 34, the tilting plate 23
rotates counterclockwise, and in this process, the rollers 27 of the inclined plate 23 move the cam groove 21 of the cam plate 20 from the rear end 21a to the vicinity of the bent part 21b, causing the lens support frame 13 to tilt upward and forward. (See Figure 10B). Then, when the solenoid 31 is demagnetized, the tilting plate 23 is rotated slightly clockwise, and the engaging portion 44 of the tilting plate stopper 41 engages with the cam groove 2 of the tilting plate 23.
8, the tilting plate 23 is locked there, and during this time the actuating block 34 returns to its original position and the connecting link 54
is rotated counterclockwise, the stopper pin 49 moves forward, and its engagement protrusion 49a engages with the engagement recess 22a to lock the lens support frame 13. At this time, the connecting pin 36 of the tilting plate 23 is located near the front end of the connecting hole 35a (see FIG. 10C).

By being in the above state, the light shielding body 18
The light-shielding edge 19 moves downward from the second focal point _F2 of the reflective surface 3 (see FIG. 11B).
Since the light reflected on the lower half of the reflecting surface 3 is also irradiated forward, a light distribution pattern 62 without a so-called cut line-in is irradiated on the upper edge (see FIG. 12B). Furthermore, since the optical axis x-x of the condensing lens 16 is tilted slightly upward compared to the time of irradiation with the passing beam (see FIG. 11B), the entire light distribution is corrected upward, and the hot zone 63 becomes H. This is a preferable light distribution pattern for a traveling beam located on the -H line (see FIG. 12B).

Next, when the solenoid 31 is energized from this state, the actuation block 34 moves forward.
As a result, the locking of the lens support frame 13 by the stopper pin 49 is released. Further, the connecting pin 36 is pressed forward by the rear end of the connecting hole 35a, causing the tilting plate 23 to rotate counterclockwise (see FIG. 10D), and from there,
When the solenoid 31 is demagnetized, the tilting plate 23 is rotated clockwise, and when the engaging portion 44 of the tilting plate stopper 41 engages with the first engagement point 47a of the cam groove 28, the tilting plate 23 is rotated clockwise. stops rotating and is locked there. At the same time, the engagement protrusion 49a of the stopper pin 49 engages the cam plate 2.
The lens support frame 13 engages with the engagement recess 22b of 0.
(See Figure 10A).

(h Reflective surface that can be used in the vehicle headlamp of the present invention) In the first embodiment described above, the reflected light from the light source located at the first position is reflected at a second position ahead of the first position. Although the spheroidal reflecting surface 3 is shown as a reflecting surface that condenses light into a straight line or a line extending substantially horizontally, other reflecting surfaces can also be used in the present invention.

For example, in Japanese Patent Application No. 61-183202, Figure 2 (composite reflective surface of a paraboloid and ellipsoid), Figure 3 (compound reflective surface of a deformed paraboloid and ellipsoid), and Figure 4 (deformed It is also possible to apply the reflecting surfaces shown in the compound reflecting surface of a paraboloid and an ellipsoid, as well as the reflecting surface shown in Japanese Patent Application No. 68260/1983.

(G Effect of the Invention) As is clear from the above description, the vehicle headlamp of the present invention directs the reflected light from the light source located at the first position to the second position ahead of the first position. a reflecting mirror having a reflecting surface that condenses light into a dot or a line extending substantially horizontally at a position; a light shield whose upper edge is located near the second position; and a light shield in front of the light shield. a condenser lens positioned near the light-shielding edge of the light-shielding body; The light-shielding member and the condensing lens are provided so as to be freely rotatable in the vertical direction with an intermediate position between the light-shielding pair and the condensing lens as a rotation axis, and a drive means for rotating the combined body of the light-shielding body and the condensing lens is provided. Features.

Therefore, in the vehicle headlamp of the present invention, not only can the passing beam be irradiated with a good light distribution pattern, but also the light shield can be rotated to move downward. This makes it possible to irradiate the light reflected on the lower half of the reflective surface, and furthermore, since the condensing lens is tilted slightly upward at this time, it passes through this condensing lens and illuminates the front. The direction of the light irradiated on the beam is corrected slightly upward compared to when the beam is irradiated, so
A hot zone in the light distribution pattern appears approximately at the center, making it a suitable light distribution pattern for the traveling beam.

[Brief explanation of drawings]

1 to 12 show an example of implementation of the vehicle headlamp of the present invention, in which FIG. 1 is a perspective view, FIG. 2 is an exploded perspective view, FIG. 3 is a right side view, and FIG. The figure is a left side view, Figure 5 is a front view, Figure 6 is a rear view, Figure 7 is a plan view, Figure 8 is a bottom view, Figure 9 shows the cam groove of the tilting plate, and Figure A is an enlarged view. Right side view, Figure B is a developed height view, Figure 10 is a side view of main parts showing operation,
Fig. 11 is a schematic sectional view showing the positional relationship and function of the reflective surface, light shielding body, and condensing lens, Fig. 12 is a drawing showing the light distribution pattern, and Figs. 13 and 14 are conventional vehicle headlights. An example is shown, FIG. 13 is a schematic sectional view, FIG. 14 is a light distribution pattern diagram, FIGS. 15 and 16 are improvement plans, and FIG. 15 is a schematic sectional view.
FIG. 16 is a light distribution pattern diagram. Explanation of symbols, 1...Vehicle headlight, 2...Reflector, 3...Reflecting surface, 6a...Light source, 10, 10'
...Support, 15, 15'...Rotation shaft, 16...
Condensing lens, 18... Light blocking body, 19... Light blocking edge,
_F1 ...First position, 20, 23, 31...Driving means, _F2 ...Second position, _FC ...Focus of the condenser lens.

Claims (1)

[Claims] 1. A reflecting surface that focuses reflected light from a light source located at a first position into a point or a line extending substantially horizontally at a second position in front of the first position. a light-shielding body whose upper light-shielding edge is located near the second position, and a condensing lens located in front of the light-shielding body and having a focal point near the light-shielding edge of the light-shielding body. The light shielding body and the condensing lens are integrally combined, and the support body is in a fixed relationship with the reflecting mirror, and the rotation axis is set at an intermediate position between the light shielding body and the condensing lens in the vertical direction. 1. A vehicle headlamp, characterized in that the vehicle headlamp is rotatably provided, and is further provided with a driving means for rotating a combined body of a light blocking body and a condensing lens.