RU2441778C2 - Headlamp searchlight-type system for automobiles - Google Patents

Abstract

FIELD: automobile industry.

SUBSTANCE: this invention covers illumination units of the vehicles. Headlamp searchlight-type system includes a drag-cup reflector, light source, lens and shutter rod. The shutter rod is installed between the lens and the reflector with its possible movement into several angular positions along horizontal rotation axis. Side surface of the rod shutter for each angular position has a focal line which establishes light-to-dark limits of light distribution. Left and right headlamps are of similar shutter geometry. Focal lines (9, 10, 12, 13) are installed inversely towards the symmetry vertical plane. First light beam is reflected from the left headlamp by means of focal line (9, 12), and the second light beam is reflected from the right headlamp by means of focal line (10, 13). These beams are overlapped with the following generation of common light distribution. Common light distribution has a light gap limited by two opposite side edges formed by the first and the second light beams. External (9, 10) and/or internal area of the focal line are of a step form, or the external area of the focal line is of dactylose form with a finger located in such a manner that common light distribution is reflected at the measuring wall with the closed light gap.

EFFECT: improvement of headlamp system due to extension of light distribution alternatives.

9 cl, 13 dwg

Description

The invention relates to a system of headlights of a searchlight type for cars with left and right headlights of a searchlight type, each of which contains a bowl-shaped reflector with two foci, a light source installed in the first focus, a lens whose focus is near the second focus of the reflector, a shutter shaft mounted between a lens and a reflector with the ability to move in several angular positions around a horizontal axis of rotation extending across the optical axis, and the side surface of the shutter shaft for each angle Vågå has a focal position of the line, establishing cut-off in the distribution of light.

From DE 19739089 A1, a searchlight type headlight for automobiles is known comprising a light source, a lens and a shutter shaft mounted between the lens and the reflector. The shutter shaft has several focal lines extending in the horizontal direction and across the optical axis of the lens, which establish a cut-off line at a given light distribution. The shutter shaft is mounted to rotate around its own axis and can be set to several angular positions, and each time there is one single focal line of the shutter shaft. Due to the formation of solid focal lines, along with the main and dipped beam function, the lighting function is also performed in the city, on highways of local importance and on highways. However, the number of focal lines is limited due to the limited parameters of the shutter shaft. Improving the light distribution in accordance with the traffic situation and the associated increase in the number of focal lines require a different spotlight type, which requires more space for installation.

An object of the present invention is to improve such a system of headlights of a searchlight type for automobiles so that the number of types of light distribution for adapting to various traffic situations of the automobile can be increased, provided that space is saved.

The solution to this problem, the invention, along with the signs of the restrictive part of claim 1 of the claims, is characterized in that the left and right headlights of the searchlight type have the same geometry of the obturators, and their focal lines are set mirror-image relative to the vertical plane of symmetry passing between the left and right headlights of the searchlight , and the focal lines of the left and right headlights pass in such a way that the first light beam is reflected with the focal line of the left headlight and the second with the focal line of the right headlight light beam are superimposed on one another to form an overall light distribution, the overall distribution of light produces a light space, bounded by two opposing side edges, a first edge constituted by the first light beam and the second edge - the second light beam.

A particular advantage of the invention is that the various designs of the focal lines, respectively, the shutter shafts, the right and left headlights of the projector-type headlight system, which are compatible with each other, can create a general light distribution corresponding to the traffic situation. The focal lines of the right and left headlights, set for a certain traffic situation, each time create different light beams that, when superimposed, create a light gap corresponding to the front section of the road space on which the vehicle is located, moving forward or towards. The overall light distribution corresponds to the usual high beam distribution, in which only that part of the road space where the vehicle is moving towards or ahead is shaded. Preferably, as a result, shielding of the unwanted dazzle of another vehicle can occur while maintaining the maximum light distribution of the main beam.

According to one preferred embodiment of the invention, the focal lines of the obturator shaft of the left and right headlights, respectively, from the side facing away from the longitudinal axis of the vehicle (from the outside), comprise an external portion of the focal line located vertically higher compared to the adjacent portion of the focal line . Thus, preferably, an average light gap can be created with a total light distribution, wherein the edges of the light gap are formed by the transition surface of the obturator shaft extending perpendicular to the longitudinal axis of the obturator shaft. Preferably, the light gap is oriented towards the vehicle moving forward and / or towards, so that depending on the traffic situation, with the exception of the middle section of the road space, the entire road space is illuminated in accordance with the normal distribution of the main beam.

According to one of the preferred embodiments of the invention, the shutter shaft is mounted to move in the horizontal direction across the optical axis. Preferably, the adjusting mechanism can be used to perform the headlight type of the function of turning light, in which the headlight is mounted with the possibility of movement relative to the vertical axis. Preferably, the light gap, depending on the detected position of the vehicle moving forward and / or towards, can vary in the horizontal direction, so that relatively good illumination of the road space within the driving beam function is provided continuously, and dazzling of the vehicle moving forward or towards is prevented . The driver of the car preferably does not encounter any strong fluctuations in illumination or large contrasts, since the light gap is preferably filled by the intrinsic light of the oncoming vehicle. Preferably, a light space dynamically tracks the current position of the oncoming vehicle until the oncoming vehicle passes the driver’s car. After that, the system of headlights of the searchlight type instantly switches to the high beam function, in which a section of the road space is illuminated over the entire width. A light gap tracking this oncoming vehicle is created only with the detection of the next oncoming vehicle.

According to one of the improved variants of the invention, the shutter shaft is made in such a way that, along with the elevated external portion of the focal lines, it also contains a raised inner portion of the shaft. Thus, the shutter shaft has a recess in the middle, the focal line of which has a shorter length than the focal lines of the external and internal sections of the focal line. Thus, light beams having only a middle finger-shaped light gap can preferably be obtained. As a result of the superposition of the first and second light beams, an average light gap and two external light spaces are obtained, so that blindness is prevented for up to three vehicles, namely, one on the middle, one on the right and one left.

According to one of the improved variants of the invention, the obturator shaft has an external focal line portion with a finger extending parallel to the longitudinal axis of the obturator shaft, so that as a result of overlapping left and right light beams on the measuring wall, a light gap is created. Due to this, illumination can preferably occur above the light gap, reaching, for example, shield objects (pointers).

According to one of the improved variants of the invention, the system of headlights of the searchlight type, respectively, of the headlights of the searchlight type, is connected to the sensor unit and to the control unit, the current position of the vehicle moving towards and / or in front is determined using the sensor unit. In this case, depending on the position data, a combination of focal lines of the headlight type of headlights is set corresponding to this traffic situation, so that a general light distribution approaching the main beam is created, and only the road space in which the vehicle is moving towards and / or is excluded in front.

Examples of the invention are explained in more detail below with reference to the drawings, in which:

figa depicts a schematic vertical section of the shaft obturator left and right headlights of the searchlight type,

fig.1b - schematically light distribution with an average light gap according figa received by the driver of the car,

figs - schematically light distribution, in which the shutter shafts in figa, respectively, the headlights, are translated in the direction of movement from the middle position to the right,

fig.1d - schematically light distribution, in which the shafts of the shutter on figa, respectively lights, are translated in the direction of movement from the middle position to the left,

fige - light distribution with the shafts of the shutter in fig. 1a, in which the width of the middle light gap is increased by moving the shutter shafts in the longitudinal direction outward,

figa is a vertical section of the shafts of the obturator headlights of the searchlight type with a focal line according to the second embodiment,

fig.2b - schematically the light distribution created for the driver of the car, with the middle light gap and with two external light spaces obtained as a result of applying the focal line circuit in figa,

figa is a vertical section of the shaft of the obturator headlights of the searchlight type with a focal line according to another embodiment,

fig.3b - schematically the light distribution created for the driver of the car, with the formation of the average closed light gap when using the position of the shutter shaft in Fig. 3a

figa is a vertical section of the shaft of the headlight obturator with a focal line outline according to another embodiment,

fig.4b - schematically, the light distribution created for the driver of the car, using the contour of the focal line shown in figa,

figure 5 - schematically, the light distribution created for the driver of the car, when using the shutter shaft with the focal line in Fig.1A, and the focal line as a result of rotation of the shutter shaft is gradually lowered,

6 is a schematic top view of a car with a headlamp type headlamp system consisting of a right and left headlamp type headlamps.

The system 1 of headlights of the searchlight type consists essentially of the left and right headlights 2, 3 of the searchlight type, installed respectively at the corners of the hole in the front technological part of the car body.

The left and right headlights 2, 3 contain a bowl-shaped reflector 5, in the first focus of which a light source 4 is installed. A lens 6 is installed near the second focus of the reflector 5. The left and right headlights 2, 3 contain shafts 7, 8 of the shutter of various configurations, respectively, mounted with the possibility of rotation around the horizontal axis D of rotation in several angular positions, transverse to the optical axis. To obtain different types of light distribution, the side surface of the shutter shafts 7, 8 for each angular position has different focal lines.

According to the first embodiment of the invention, FIGS. 1a - 1e, the shafts 7, 8 of the left and right headlight shutter 2, 3, respectively, are in such an angular position that on the side of the shaft 7, respectively 8 of the shutter, facing away from the longitudinal axis F of the vehicle, an external plot 9, respectively, 10 of the focal line, elevated in the vertical direction. The outer portion 9, 10 of the focal line behind the optically inefficient transition surface is installed with a parallel offset relative to the inner portion 12, respectively, 13 of the focal line. Sections 9, 12 of the focal lines of the left headlight 2 and sections 10, 13 of the focal lines of the right headlight 3 are mounted mirror-image relative to the vertical plane S of symmetry passing between the left and right headlights 2, 3. Thus, the headlights 2, 3 of the projection type have the same geometry of the shutters True, the mirror.

As can be seen in FIG. 1b, the first light beam (left light beam TL) created by the left headlight 2 and the second light beam (right light beam TR, indicated by the dashed line) created by the right headlight 3 are superimposed on each other, with the formation of the overall light distribution G having a light gap in the middle 14. The middle light gap 14 is limited by the first edge 15 of the first light beam TL and the second edge 16 of the second light beam TR. The overall light distribution G corresponds to the usual high beam distribution, with the only difference being that the middle portion in which the vertical V passes is deprived of light. Due to this, glare of the vehicle P located in front of the middle road space can be prevented, otherwise the illumination of the road space can be provided over the entire width.

The first light beam TL and the second light beam TR comprise a corresponding main lighting portion 17, respectively 18, whereby from the main lighting portion 17 of the left light beam TL on the left side, the rear road portion is illuminated by the left finger-shaped lighting portion 19, and from the main lighting portion 18 illumination of the right light beam TR on the right side due to the right finger-shaped portion 20 of the lighting.

As can be seen in figa, the length l of the outer portion 9, 10 of the focal line is less than half the length L of the shaft 7, 8 of the shutter.

The shutter shafts 7, 8 can be allocated the corresponding control unit 21, 22, with which the shutter shafts 7, 8 are moved in the horizontal direction relative to the vertical axis. Thus, the shafts 7, 8 of the shutter are displaced perpendicular to the optical axis. The control units 21, 22 preferably move not only the shutter shafts 7, 8 directly, but also the entire left headlight 2, respectively, the entire right headlight 3. The control units 21, 22 can also be used to perform the turning light function. In this case, the entire headlight 2, 3 of the searchlight type also moves relative to the vertical axis.

To obtain a total light distribution G of FIG. 1c, in which the shutter shafts 7, 8 are in an angular position according to FIG. 1a, the shutter shafts 7, 8 are moved to the right with respect to the vertical axis in the direction of travel. To obtain the overall light distribution G´ of FIG. 1d, the shutter shafts 7, 8, respectively, of the headlights 2, 3, are moved respectively to the left relative to the vertical axis in the direction of movement. To obtain a larger width B of the middle light gap 14, the shafts 7, 8 of the shutter, respectively, of the headlights 2, 3, move in opposite directions, namely the left headlight 2 - to the left, and the right headlight 3 - to the right. As a result, an expanded luminous gap 14´ is created, so that it becomes possible to screen the moving wider vehicles in front or several vehicles traveling side by side. When the shafts 7, 8 of the shutter are displaced in the direction of the longitudinal axis F of the vehicle, overlapping edges 15, 16 of the light beams TL, TR can occur, so that the usual high beam light distribution will occur.

According to another embodiment of the invention in FIG. 2a and 2b, they may have another focal line 23 symmetrical about the mid-transverse plane Q of the shutter shaft 7, 8. In this case, the left and right headlights 2, 3 have the same focal line contour, and in contrast to the embodiment of Fig. 1a, the focal line 23 has two steps, and an adjacent middle recess A is formed next to the elevated outer portion 17 of the focal line, and next to her another elevated inner portion 24 of the focal line. The elevated inner focal line portion 24 creates an external light space 25 of the left light beam TL and an external light space 26 of the right light beam TR. In this way, it is preferable to avoid blinding other vehicles on the side of the road space. Thus, the total light distribution G on the measuring wall 10 m away is stepped, with the left high beam portion 27 and the right high beam portion 28 having edges 29, 30 created by transition surfaces 11 of the focal line 23.

According to another embodiment of the invention, the shutter shafts 7, 8 in FIGS. 3a and 3b have focal lines 31, 32, which, in contrast to the embodiment in FIG. 1a, have external focal line portions 33, 34 with fingers 35, 36 directed parallel to the longitudinal axis of the shafts 7, 8 of the shutter and in the direction of the longitudinal axis F of the vehicle. As a result, a general light distribution G according to FIG. 3b is created, including a closed middle light gap 37. Due to this, lighting can be provided over the vehicle moving in front, which can serve, for example, to illuminate a shield object.

According to another embodiment of the invention, FIGS. 4a and 4b may include a stepped focal line 38, 39 of the left and right shutter shaft 7, 8, respectively, with the steps rising outward in a vertical direction from the side facing the longitudinal axis F of the vehicle. By longitudinally moving the shutter shaft 7, 8, the shaded area may vary in height, i.e. the cut-off border of the HDG can be transferred, for example, when leaving the position indicated by the dotted line to a higher position indicated by the solid line.

According to another embodiment of the invention in FIG. 5, the focal line 9, 12 or 10, 13 according to FIG. 1a can be lowered by synchronously turning the headlights 2, 3 around the horizontal axis until the dipped beam position at which the cut-off line is reached The HDG of the left high beam portion 19 is translated to the low beam position. The movement of the shutter shaft 7, 8, with the inner portion 12, 13 of the focal line remaining unchanged, is continuous, so that the non-blinding portion can gradually monitor the current traffic situation.

To move the shutter shafts 7, 8, control units 21, 22 are provided, at the inputs of which a sensor signal is supplied from the sensor unit 40. The sensor unit 40 can be made in the form of a camera system that tracks the entire field (front road space) of the car and possible transport means P. The sensor unit 40 is designed in such a way that it fixes the position and / or removal of the headlights 2, 3 from the oncoming or moving ahead of the participant in the movement (vehicle) in the field. The control unit 21 may comprise a microcontroller or microprocessor with a memory in which a lighting control program is entered.

The tracking of the light gap 14, 14´ depending on the current position of the oncoming or front-moving vehicle is preferably carried out in such a way that, on the one hand, the glare of the oncoming or front-moving vehicle is prevented, and on the other, to ensure maximum illumination of the road space according to light distribution high beam. Preferably, the left and right headlights 2, 3, when the oncoming vehicle appears, are dynamically gradually shifted to the left relative to the vertical axis until the oncoming vehicle passes the headlight system of the searchlight type. In this case, a light space 14, 14´ tracks the oncoming vehicle with the overlapping of the latter. Preferably, the light gap 14, 14´ widens depending on the distance of the oncoming car, so that the light gap 14, 14´ when the oncoming vehicle appears at a large distance has a relatively small width, and when the oncoming vehicle appears at a short distance, it has a relatively large width. The position of the light space 14, 14´ in the horizontal direction, as well as the width B of the light space 14, 14´ are selected so that the oncoming vehicle is in the light space 14, 14´. At the same time, for the driver of the car, lighting of the road space in width to the right and left of the oncoming vehicle is guaranteed. As a result of the fact that the oncoming vehicle in the light gap itself emits light, the surface of the driver in the horizontal direction appears to be fully illuminated.

LIST OF POSITIONS

floodlight system

searchlight left headlight

right headlight

Light source

reflector

lens

shutter shaft

shutter shaft

outer focal line

outer focal line

transition surface

focal line interior

focal line interior

14, 14´ - middle light gap

15 - first edge

16 - second edge

17 - section of the main lighting

18 - section of the main lighting

19 - left finger-shaped area

20 - right finger-shaped area

21 - control unit

22 - control unit

23 - focal line

24 - the middle section of the focal line

25 - external light space

26 - external light space

27 - the left section of the main beam

28 - the right section of the main beam

29 - edge

30 - edge

31 - focal line

32 - focal line

33 - the outer portion of the focal line

34 - external portion of the focal line

35 - finger

36 - finger

37 - middle light gap

38 - focal line

39 - focal line

40 - touch unit

A - notch

B is the width of the middle light gap

D - axis of rotation

F - longitudinal axis of the car

G - total light distribution

HDG - black and white border

I - the length of the external burning light

L - half the length of the shutter shaft

P - vehicle, automobile

Q - transverse middle plane

S - plane of symmetry

TL - left light beam

TR - right light beam

V - vertical

Claims (9)

1. A system of headlights of a searchlight type for cars with left and right headlights of a searchlight type, each of which contains:
- a bowl-shaped reflector with two tricks,
- a light source installed in the first focus,
- a lens whose focus is near the second focus of the reflector,
- a shutter shaft mounted between the lens and the reflector with the ability to move in several angular positions around the horizontal axis of rotation passing across the optical axis, and the side surface of the shutter shaft for each angular position has a focal line that sets the cut-off line of the light distribution, and the left headlight (2) and the right headlight (3) have the same geometry of the shutters, and their focal lines (9, 10; 12, 13) are set mirror-image relative to the vertical plane (S) of symmetry passing m between the left headlight (2) and the right headlight (3), and the focal lines (9, 10; 12, 13) of the left headlight (2) and the right headlight (3) pass in such a way that using the focal line (9, 12) the left headlight (2) reflects the first light beam (TL), and using the focal line (10, 13) of the right headlight (3) - the second light beam (TR) overlapping each other with the formation of a common light distribution (G), and the total the light distribution (G) has a light gap bounded by two opposite side edges (15, 16), the first edge (15) being formed by the first light beam (TL) and the second edge and (16) the second light beam (TR), while the outer portion (9, 10) of the focal line and / or the inner portion of the focal line is made in the form of a step, or the outer portion (33, 34) of the focal line is finger-shaped with a finger (35, 36) parallel to the longitudinal axis of the shutter shaft (7, 8) so that the overall light distribution (G) is displayed on the measuring wall with a closed light gap (37). 2. The system of headlights of the searchlight type according to claim 1, characterized in that the focal line of the shaft (7, 8) of the obturator from the side facing away from the longitudinal axis (F) of the vehicle contains an outer portion elevated in the vertical direction compared to the adjacent portion of the focal line (9, 10) the focal line by which a high-beam section (19, 20) is created that extends vertically from the main lighting section (17) created by the projection type headlights located at a distance from the system (1) e first (TL) and second (TR) light beams, which edge (15, 16) are at such a distance from each other that the light gap (F) formed in a predetermined road space. 3. A floodlight system according to claim 1 or 2, characterized in that the first edge (15) of the first light beam (TL) and the second edge (16) of the second light beam (TR) are formed by a transition surface (11) perpendicular to the longitudinal axis of the shutter shaft (7, 8), wherein the transition surface (11) extends in a vertical plane (V) passing through the optical axis. 4. The system of headlights of the searchlight type according to claim 1 or 2, characterized in that the outer portion (9, 10) of the focal line is less than half the length of the focal line. 5. The system of headlights of the searchlight type according to claim 3, characterized in that at least one shaft (7, 8) of the shutter is mounted with the possibility of moving in the horizontal direction across the optical axis in such a way that with the external position of the shaft (7, 8 ) of the shutter, farther from the longitudinal axis (F) of the car, the overall light distribution (G) is set with the middle light gap (14), and with the internal position of the shaft (7, 8) of the shutter less than the longitudinal axis (F) of the car, it is set high beam light distribution. 6. The system of headlights of the searchlight type according to claim 1 or 2, characterized in that the focal line (23) of the shaft (7, 8) of the obturator from the side facing the longitudinal axis (F) of the vehicle contains an inner portion of the focal line elevated in the vertical direction so that external light gaps form from the outer edge of the overall light distribution (G) (25, 26). 7. The system of headlights of the searchlight type according to claim 1 or 2, characterized in that a sensor unit (40) is provided for covering the road space in front of the car, a control unit (21), the input of which receives a sensor signal from the sensor unit (40), an executive a unit for moving the shutter shaft (7, 8), to the input of which the control signal of the control unit (21) comes in such a way that the focal lines of the shutter shafts (7, 8), depending on the traffic situation, are set to create such light beams (TL, TR), that the total resulting The distribution (G) is set according to the traffic situation. 8. The system of headlights of the searchlight type according to claim 7, characterized in that, depending on the signal of the sensor determining the current position of the vehicle moving towards or in front, the shaft (7, 8) of the shutter or headlight (2, 3) is rotated around the horizontal axis, so that the corresponding portion (38, 39) of the focal line is continuously lowered until the total light distribution (G) has moved from the high beam position to the low beam position. 9. The system of headlights of the searchlight type according to claim 5, characterized in that at least one shaft (7, 8) is mounted to move horizontally across the optical axis in such a way that depending on the signal of the sensor determining the current position of a vehicle moving towards or in front, a light gap (14) tracks the position of the vehicle with overlapping.

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