• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Lighting device for vehicle headlight (1), comprising at least one light source (2), at least one light guide (3) with at least three reflection faces arranged in a pyramidal shape, so that the incident light on the at least one reflection body (31) is dispersed substantially in at least three different directions, where a second reflection face (311b) and a third reflection face (311c) are configured to reflect internally in the light guide ( 3) the light towards a second reflection surface (32), and this towards a third reflection surface (33), which is configured to internally reflect the incident light towards a surface to be illuminated (4). In this way, a simple daytime running light function is available, using the minimum number of possible components but maintaining a high homogeneity and efficiency. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2575998A1
    申请号:ES201531914
    申请日:2015-12-28
    公开日:2016-07-04
    发明作者:Maite PARÍS GARCÍA；Carlos ELVIRA ÁVILA；Amara CALDERÓN FERNÁNDEZ
    申请人:SEAT SA；
    IPC主号:
    专利说明:

    DESCRIPTION

    Lighting device for vehicle headlight

     5
    OBJECT OF THE INVENTION

    The purpose of the present patent application is to provide a vehicle headlight lighting device according to claim 1, which incorporates notable innovations and advantages.
     10

    BACKGROUND OF THE INVENTION

    The present invention refers to DRL devices (Day Running Light or daytime running light) by using LED light. Within this category of devices, two different types can be highlighted in broad strokes:
    • A first type in which the LEDs illuminate a light guide at one of its ends, transmitting the light longitudinally. This solution is used to illuminate long contours or perimeter shapes, either for front lights used as DRL, or as a rear light used as a position light. twenty
    • A second type with which it is intended to illuminate a contour of smaller dimensions, where the previous concept of light guide presents deficiencies, such as lack of homogeneity in the corners or closed angles, where the loss of light is important.

    Within the second type of DRL devices, the concept of a massive light guide through which light is transmitted is known from the prior art. More particularly, it is known from EP2693105 to move from a simple LED light emitter, to illuminate an essentially rectangular and elongated surface by means of a massive light guide, by means of a reflection effect inside. Specifically, a vehicle lighting unit consisting of a first unit with a previous light function and a second light unit with a daytime running function is disclosed. The main objective of the document is that the DRL unit is arranged behind the first unit with a previous light function, so that the light of the DRL unit can pass through a light transmission section to be projected towards in front, crossing the first unit with function and previous light. Thus, a compact lighting module with reduced dimensions is achieved.

    Thus, and as main features, a DRL composed of a light guide, a light input, that consists of a surface that functions as a collimator and peripheral surfaces that refract the emitted light beams, multiple reflections of light would be known within the light guide on faceted surfaces and an interior cavity that is responsible for making a reflection on all the dimensions of the incident light.

    It is also known from the state of the art, as reflected in document US20050286262, a light and / or signaling device for a motor vehicle comprising at least one light emitting diode emitting a light beam, in particular as along the axis (X) of said emitter, and at least one optical guide (G), one end of which is illuminated by the at least one of the light emitting diodes. The optical guide comprises at least one blind hole produced in the thickness of the optical guide, located in front of the light emitter, in order to deflect the light beam, by a lateral reflection of the latter. Said optical guide is capable of emitting light, in particular over all or at least part of its length.

    So, and as main features would be known
    - The optical guide as an elongated solid element, with a cylindrical cross section, made of transparent material, although it could have different geometric shapes.
    - A hole located across the optical guide. This hole asymmetrically creates flat areas and inclined areas on which the light beams strike. Its purpose is the reflection of light in different directions.
    - A slot for diffusing the light towards the opposite face, that is, towards the exit face of the optical guide. It can comprise a diffuser zone based on micro-diffusions which may have different patterns, for example: straight or curved grooves, micro-prisms with a triangular cross-section, holes with a specific shape, produced in the material in order to improve the homogeneous appearance of the outgoing light on the output side of the optical guide. 30

    In both documents of the state of the art the problem of lighting in the central zone is not solved, that is, in the area after the hole that acts as a light transmitting element in different directions, in the direction of light emission. The devices described in both documents lose a lot of light homogeneity, making lighting alternatives where control is lost in the reflection of the beams. Thus in document EP2693105 homogeneity is lost, especially in the central exit surface (723), in addition to using a larger volume of massive light guide, element of high cost. In US20050286262 there is a clear loss of control of the light beams, as well as a decrease in the light beams and their intensity in said central area after the light transmission hole.

    Thus, it is seen that there is still a need to have a simple daytime running light function, using the minimum number of possible components but maintaining a high homogeneity and efficiency of the emitted light. Said device 10 could also be used for other functions than the daytime running light function, in which a high intensity of light is not necessary, such as in the rear lights for position or stop light function.

     fifteen
    DESCRIPTION OF THE INVENTION

    The present invention relates to daytime running light or DRL (Day Running Light) devices, whose light source is a LED emitting diode. The main elements on which the present invention is based are a massive solid material light guide through which a homogeneous light transmission is obtained, a cover for selecting the controlled light outputs of the guide, a first surface of reflection as a collimator of the light flow, a second reflection surface, which preferably includes a series of faceted optics, intended to direct the flow towards the light exits or towards the third reflection surfaces, and a possible third surface of reflection to direct the light beams towards the surfaces to be illuminated.

    Thus, and in more detail, the lighting device comprises at least one light source, at least one light guide comprising at least one surface to be illuminated, and at least one first reflection body facing the at least one light source so that at least one beam of light emitted by the at least one light source strikes the at least one first reflection body, wherein the at least one light guide comprises at least a third reflection surface and at the at least a second reflection surface, which in turn comprises at least two regions, where the at least a third reflection surface and the at least two regions surround at least a first reflection body, the at least one first reflection body it comprises at least three reflection faces arranged in a pyramidal manner, so that the incident light on the at least one reflection body is substantially dispersed in at least three different directions, where a prime The reflection face is configured to internally reflect in the light guide the light emitted by the at least one light source towards the at least a third reflection surface, 5 where a second reflection face and a third reflection face are configured to internally reflect in the light guide the light emitted by the at least one light source towards the at least a second reflection surface, the at least a second reflection surface is configured to internally reflect the incident light in the light guide towards the at least a third reflection surface, the at least a third reflection surface is configured to internally reflect in the light guide the incident light towards the at least one surface to be illuminated.

    A massive light guide has the advantage that it transmits the light in all its dimensions in a homogeneous way, which allows to achieve a high homogeneity inside to eliminate points of light that are reflections of the emission of an LED, correctly distributing light throughout the surface. In addition, it is a solid body illuminated throughout its entirety. Thus, the objective of the present idea is to direct the light beams inside the light guide so that they are channeled in the most homogeneous way possible to the at least one surface to be illuminated, getting a user to observe at least an illuminated surface with the same intensity of light, the same hue of light ...

    In addition, a remarkable feature is that all the light emitted by the at least one light emitter is reflected in the first reflection body of the massive light guide. This point 25 is advantageous since high control of the light beams is obtained, allowing direct control of the incident light beams towards other dimensions. More specifically, the emitted light beams are fully reflected on the at least three reflection faces arranged in a pyramidal manner, preventing light beams from flowing through the light guide randomly. 30

    Specify that with the idea that “all the light is reflected in a first reflection surface of the massive light guide”, it is intended to express the concept that all the controllable light beams emitted by the light emitter directly affect on the first body of reflection. Also when it is said “in the light guide” it means that the 35 beams of light are reflected inside the light guide. In addition, with "pyramid shape" reference is made to a geometric body comprising three faces, which meet two to two at edges, and all three at a single vertex.

    Advantageously, the at least two regions of the at least one second reflection surface comprise a plurality of faceted optics for the reflection of the incident light, so that the light reflected on the at least a second reflection surface is substantially in a same direction towards the third reflection surface. A reflection surface consisting of a plurality of faceted optics allows beams of light incident in a first direction to be reflected and directed in a controlled manner towards a second direction. Thus it is achieved that the incident light beams are substantially aligned in a second direction.

    According to another aspect of the invention, the lighting device comprises at least one cover superimposed on the at least one light guide, where the at least one cover defines the at least one surface to be illuminated, so as to allow a light output of the at least one light guide. Remember that a massive light guide is a body that transfers light minimizing losses. Thus, in the absence of surface treatments of the outer surface of the light guide, it is a body illuminated as a whole. By using the cover, only the surfaces that wish to be illuminated are illuminated, and at the same time, the 20 possible light leaks are covered, which would eliminate the homogeneous visual effect of the light emitted by the at least one surface to be illuminated .

    In a preferred embodiment of the invention, the cover is black, so that any light leakage is more effectively absorbed, preventing the transmission of light through the cover.

    Advantageously, the lighting device comprises a centering element of the light guide, so that the light guide is perfectly oriented and positioned with respect to at least one light emitter and the cover. In addition, the effects of 30 vibrations and rattles caused by vehicle movements are minimized.

    In a preferred embodiment of the invention, the lighting device comprises at least three light sources and at least three surfaces to be illuminated, wherein the at least one light guide comprises at least three first reflection bodies arranged in a pyramidal shape, at least three second reflection surfaces and at least three third reflection surfaces that direct the light towards the at least three surfaces to be illuminated, where the at least three surfaces to be illuminated form a polygon of at least three sides. In this way the shape of the daytime running light acquires a closed contour shape, giving a more aesthetic and compact feeling. 5

    Advantageously, the lighting device comprises a single common light guide for the at least three light sources and annexes to the at least three light sources. In this way the design is more robust and compact, while there is a saving in terms of components and volume of material used by the light guide. In addition, all the internal reflection of the light 10 emitted by the at least three light emitters is carried out entirely in a single light guide.

    More particularly, the at least one beam of light emitted by one of the at least three light sources strikes the first reflection body facing the light source and the second and third reflection surfaces surrounding the first body of reflection, so that one of the at least three light sources illuminates one of the at least three surfaces to be illuminated. Thus each light source has its own first reflection body, and its own second reflection surface, and its own third reflection surface, so that the flow of light is sharper and more homogeneous, avoiding crossings of light beams 20 , allocating each reflection surface to a specific function.

    According to another aspect of the invention, the lighting device comprises a common electronics and a radiator for the at least three light sources and annexes to the at least three light sources. The use of a single electronics and radiator for the at least three sources of 25 light is possible thanks to the use of a single light guide. This allows a design of the at least three light emitters in a central area of the light guide and close to each other. Therefore, component savings are obtained, in addition to a more robust and compact design.
     30
    More specifically, the at least a second reflection face is configured to reflect the incident light towards a first of the at least two regions and because the at least a third reflection face is configured to reflect the incident light towards a second of the at at least two regions, where the first and second of the at least two regions are comprised in the same second reflection surface. It is understood therefore that each second reflection surface is composed of two regions which, in turn, comprise the plurality of faceted optics. In addition, the two regions partially surround the respective first reflection body.

    Advantageously, the light reflected by at least one second reflection face and at least 5 a third reflection face is in the same direction, where the at least a second reflection face and the at least a third reflection face are comprised in The same first body of reflection. Thus, the light beams reflected by the second reflection face and the third reflection face are substantially aligned in the same direction towards the second reflection surface. Thus, by understanding the plurality of reflection faces in the same reflection body, possible misalignments and crossings between the light beams that could occur when found in independent components are avoided.

    Additionally, the light reflected by at least a second reflection face and by at least a third reflection face is in an opposite direction, where the at least a second reflection face and the at least a third reflection face are comprised in The same first body of reflection. It is thus observed that the light reflected in the second reflection face is towards one of the regions of the second reflection surface and the light reflected by the third reflection face is towards the other of the regions of the second reflection surface. The main function of the second and third reflection faces combined with the two regions of the second reflection surface is to direct beams of light towards the most distant points of the surface to be illuminated in a homogeneous and controlled manner. In this way, the second and third reflection faces seek to open the field of light beams emitted by the light emitter, so that a surface to be illuminated more elongated is achieved.

    On the other hand, the light reflected by at least one of the first reflection faces is in a direction substantially perpendicular to the light reflected by at least one of the second or third reflection faces, where at least one of the first reflection faces and at least one of the second or third faces of reflection are comprised in the same first body of reflection. Again, the substantially perpendicular direction of the first reflection face with respect to the second and third reflection faces allows a greater opening of the field formed by the light beams emitted by the light emitter. In addition, by understanding the plurality of reflection faces in the same reflection body, possible misalignments that could occur when found in independent components are avoided.

    According to another aspect of the invention, the light guide material is high transmissive optical polycarbonate, which is a lightweight material, and with high impact resistance, which minimizes the risk of possible breakage, in addition to allowing high light transmissivity inside the light guide, minimizing losses inside.

    The object of the present invention is also a vehicle headlight comprising a lighting device as described above, thus benefiting from the 10 advantages indicated so far.

    Note, then, that with the lighting device of the present invention, illumination of outer surfaces of the light guide is achieved through a set of reflections. Thus, a homogeneously illuminated surface is achieved both in its central zone 15, that is, the area after the first reflection body in the direction of light emission, and in the lateral zones to said central zone. In addition, components used, volume of the lighting device assembly and complexity in its assembly are minimized.
     twenty
    The attached drawings show, by way of non-limiting example, a vehicle headlight lighting device, constituted according to the invention. Other features and advantages of said vehicle headlight lighting device, object of the present invention, will be apparent from the description of a preferred but not exclusive embodiment, which is illustrated by way of non-limiting example in drawings 25 which They are accompanied, in which:


    BRIEF DESCRIPTION OF THE DRAWINGS
     30
    Figure 1.- It is a perspective and exploded view of the light guide and the light source of the vehicle headlight lighting device, in accordance with the present invention.
    Figure 2.- It is a perspective and exploded view of the guide, the light source, the cover and the centering element of the vehicle headlight lighting device, in accordance with the present invention. 35
    Figure 3A.- It is a perspective and detailed view of the light guide of the vehicle headlight lighting device, in accordance with the present invention.
    Figure 3B.- It is a front and detail view of the cover and the light guide of the vehicle headlight lighting device, in accordance with the present invention.
    Figure 4.- It is a front view of a vehicle headlight, in accordance with the present invention. 5
    Figure 5A.- It is a front detail view of the light guide of the vehicle headlight lighting device, in accordance with the present invention.
    Figure 5B.- It is a front detail view of the light guide of the vehicle headlight lighting device, in accordance with the present invention.
    Figure 6A.- It is a front detail view of the light guide of the lighting device 10 for vehicle headlight, in accordance with the present invention.
    Figure 6B.- It is a side view through section B-B of the vehicle headlight lighting device, in accordance with the present invention.
    Figure 6C.- It is a side view through section C-C of the vehicle headlight lighting device, in accordance with the present invention. fifteen


    DESCRIPTION OF A PREFERRED EMBODIMENT

    In view of the aforementioned figures and, according to the numbering adopted, an example of a preferred embodiment of the invention can be observed therein, which comprises the parts and elements indicated and described in detail below.
    The present invention is based on a vehicle headlight lighting device 1 which aims to illuminate a contour or silkscreen of reduced dimensions, more specifically, a geometric figure such that its contour is illuminated. An example would be the generation of three illuminated surfaces that form a contour of a triangle, as can be seen in Figure 4. This type of illumination is used both in previous pilots for DRL daytime running light functions, and for later pilots. for braking or position light functions. 30

    Thus, as can be seen in Figure 2, the main components that form the present lighting device for headlamp 1 are, from innermost zone to outermost zone in the direction of advance of the light emitted by a light source 2 :
    - a radiator 8 to dissipate the heat generated by the light source 2 and an electronics associated with said light source 2,
    - an electronics 7 that governs the operation of the light source 2,
    - at least one light source 2, being treated for the type of lighting required of a LED type diode, 5
    - a centering device 6, which aims to correctly position a light guide 3 with respect to the light sources 2,
    - a light guide 3, which has the function of transmitting and dispersing the light emitted by the at least one light source 2 in order to illuminate surfaces to be illuminated 4 in a homogeneous way, 10
    - a cover 5 which allows the light output of the lighting device for headlight 1 to be carried out only through the desired areas, thus avoiding light leaks that provide an unwanted appearance.

    Thus, as seen in Figures 1, 2, 3A, 3B, 5A, 5B and 6C the lighting device 15 for vehicle headlight 1 comprises at least one light source 2, at least one light guide 3 comprising at least one surface to be illuminated 4, and at least a first reflection body 31 facing the at least one light source 2 so that the at least one beam of light emitted by the at least one light source 2 impacts on the at least a first reflection body 31, wherein the at least one light guide 3 comprises at least a third reflection surface 33 and at least a second reflection surface 32, which in turn comprises at least two regions 321, where the at least a third reflection surface 33 and the at least two regions 321 surround at least a first reflection body 31, the at least a first reflection body 31 comprises at least three reflection faces arranged in a pyramidal manner, so that the incident light on the at least one cue Reflection rpo 25 31 is substantially dispersed in at least three different directions, where a first reflection face 311a is configured to internally reflect in the light guide 3 the light emitted by the at least one light source 2 towards the at least one third reflection surface 33, where a second reflection face 311b and a third reflection face 311c are configured to internally reflect in the light guide 3 the light 30 emitted by the at least one light source 2 towards the at least a second reflection surface 32, the at least one second reflection surface 32 is configured to internally reflect in the light guide 3 the incident light towards the at least a third reflection surface 33, the at least a third reflection surface 33 is configured to internally reflect in the light guide 3 the incident light towards the at least one surface to be illuminated 4.

    Note that the totality of controllable light beams emitted by the light emitter directly affects the first reflection body 31, so that the dimensions of the first reflection body 31 are suitable for the totality of light beams to fall on said body controllable light emitted by the light source 2. Forcing a first reflection of the light beams on the first reflection body 31 it is possible to control the dispersion directions of the light beams, achieving a homogeneous illumination of the surface to be illuminated 4 10

    Mention also that the light emitted by the LED is cone-shaped, and that it is these beams of light that are introduced in the massive light guide 3. Thus, and as seen in the section of Figure 6C or in the front view of figure 5A, all cone-shaped light beams emitted by each of the LEDs, directly impact on a first surface or reflection body 31. In an alternative embodiment there may be an intermediate lens or optic with the in order to direct more specifically these light beams. This first reflection surface or body 31 has in a preferred embodiment a pyramidal shape, with three surfaces intersected in a single vertex and with an essentially circumferential shaped base. Each of the faces reflects part of the light beams 20 emitted by the LEDs in a different direction.

    This first pyramidal surface allows the light beams to be dispersed essentially in three different directions. The light beams reflected on the two larger surfaces 311b, 311c find a second reflection surface 32 with a surface 25 of faceted optics 322. This second reflection allows the light beams to be emitted in a direction substantially parallel to each other. Once all the light beams are oriented in the same direction, a third reflection is presented through a third reflection surface 33 to direct them towards the surface to be illuminated 4.
     30
    More in detail, as seen in Figures 5A and 5B, the at least two regions 321 of the at least one second reflection surface 32 comprise a plurality of faceted optics 322 for the reflection of the incident light, so that the Light reflected on the at least a second reflection surface 32 is substantially in the same direction towards the third reflection surface 33. 35

    On the other hand, as seen in Figures 2, 3B and 4, the lighting device comprises at least one cover 5 superimposed on the at least one light guide 3, where the at least one cover 5 defines the at least one surface to be illuminated 4, so that it allows a light output of the at least one light guide 3. As an alternative embodiment, the cover 5 5 allows the light to pass partially through its particular geometry or because the cover 5 comprises at least a groove 51 superimposed on the at least one surface to be illuminated 4 that allows light to pass through said groove 51.

    It should be mentioned that, as can be seen in Figures 2, 3B and 4, the cover 5 is black 10, absorbing the incident light and preventing light leaks towards unwanted areas.

    Additionally, as seen in Figure 2, the lighting device comprises a centering element 6 of the light guide 3, which allows the light sources 2 to be correctly positioned and facing the respective first reflection bodies 15 31, ensuring in this way that the light beams emitted by each light source 2 fully affect the respective first reflection body 31.

    According to a preferred embodiment of the invention, as seen in Figures 3A, 5A and 5B the lighting device comprises at least three light sources 2 and at least three surfaces to be illuminated 4, wherein the at least one guide of light 3 comprises at least three first reflection bodies 31 arranged in pyramidal form, at least three second reflection surfaces 32 and at least three third reflection surfaces 33 that direct the light towards the at least three surfaces to be illuminated 4, where the At least three surfaces to be illuminated 4 form a polygon with at least three sides. According to the embodiment presented in Figure 3B, the headlight lighting device 1 comprises three light sources 2, so that each light source 2 emits the light to its respective first reflection body 31, to its respective second surface of reflection 32 and its respective third reflection surface 33, thus illuminating its respective surface to be illuminated 4. Note also that a triangle is made up of three surfaces to be illuminated 4 perimeters. 30

    More particularly, as seen in Figures 1, 2 and 6A, the lighting device comprises a single light guide 3 common to the at least three light sources 2 and annexed to the at least three light sources 2. Thus, the light beams emitted by a light source 2 do not interfere with the light beams emitted by another light source 2 inside the light guide 3. More in detail, as seen in the figure 5A or 5B, the light guide is configured so that it forms at least three different zones, so that independent light transmissions occur in each of the three parts. The component that produces the division of the light beams is the second reflection surface 32, where the two regions 321 that make up each second reflection surface 32 delimit each of the parts.

    More specifically, as seen in Figures 5A and 5B, the at least one beam of light emitted by one of the at least three light sources 2 strikes the first reflection body 31 facing the light source 2 and over the second and third reflection surfaces 32, 33 surrounding the first reflection body 31, so that one of the at least three light sources 2 illuminates one of the at least three surfaces to be illuminated 4.

    According to another aspect of the invention, as seen in Figure 2, the lighting device comprises an electronic 7 and a radiator 8 common for the at least three light sources 2 and annexed to the at least three light sources 2 .

    On the other hand, as seen in Figures 5A and 5B, the at least one second reflection face 311b is configured to reflect the incident light towards a first of the at least two regions 321 and because the at least one third face of reflection 311c is configured to reflect the incident light towards a second of the at least two regions 321, where the first and the second of the at least two regions 321 are comprised in the same second reflection surface 32.

    It should be mentioned that, as seen in Figure 5A, the light reflected by at least one second reflection face 311b and at least one third reflection face 311c is in the same direction, where the at least one second face of reflection 311b and the at least one third reflection face 311c are comprised in the same first reflection body 31.
     30
    Additionally, as seen in Figure 5A, the light reflected by at least one second reflection face 311b and at least one third reflection face 311c is in an opposite direction, where the at least one second reflection face 311b and the at least one third reflection face 311c is comprised in the same first reflection body 31. 35

    According to another aspect of the invention, as seen in Figures 5A and 5B, the light reflected by at least one of the first reflection faces 311a is in a direction substantially perpendicular to the light reflected by at least one of the second or third reflection faces 311b, 311c, where at least one of the first faces of reflection 311a and at least one of the second or third reflection faces 311b, 311c are comprised in the same first reflection body 31.

    Going into more detail, as shown in Figure 5B, a first path is shown schematically followed by the light beams inside the light guide 3 10 until a surface to be illuminated is reached 4. Thus, part of the light beams emitted by a light source 2, affect a first reflection face 311a of the first reflection body 31. These light beams are reflected towards the third reflection surface 33. Next, a reflection occurs in the third reflection surface 33 so that the light beams are directed towards the surface to be illuminated 4. As can be seen, 15 thanks to this first path followed by the light beams, a central surface of the surface to be illuminated is illuminated Four.

    In addition, as shown in Figure 5A, a second path is shown schematically followed by the light beams inside the light guide 3 until a surface to be illuminated is reached 4. Thus, going into more detail, part of the light beams emitted by a light source 2, affect a second reflection face 311b of the first reflection body 31. These light beams are reflected towards a region 321 of the second reflection surface 32. The faceted optics of the second reflection surface 32 reflect said light beams substantially parallel to each other towards the third reflection surface 25. Finally, a new reflection occurs on the third reflection surface 33 so that the light beams are directed towards the surface to be illuminated 4. The reflection on the second reflection face 311b opens the field of the incident light beams, so that with this second path followed, illumination is achieved ar a lateral surface of the surface to be illuminated 4. 30

    Finally, as shown in Figure 5A, a third path is shown schematically followed by the light beams inside the light guide 3 until a surface to be illuminated is reached 4. Thus, going into more detail, part of the light beams emitted by a light source 2, affect a third reflection face 311c of the first reflection body 31. These light beams are reflected towards another region 321 of the second reflection surface 32. The Faceted optics of the second reflection surface 32 reflect said light beams substantially parallel to each other towards the third reflection surface 33. Finally, a new reflection is produced on the third reflection surface 33 so that the light beams are directed towards the surface to be illuminated 4. The reflection on the third reflection face 311c opens the field of the incident light beams in a different path to the reflected beams in the signal There is a large reflection face 311b, so that with this third path followed, the other lateral surface of the surface to be illuminated is illuminated 4.
     10

    Advantageously to favor the transmissivity of the light inside the light guide 3, the material of the light guide 3 is high transmissivity optical polycarbonate.

    It is also an object of the invention, as seen in Figure 4, a vehicle headlight 15 comprising a lighting device as described above. Specifically, in figure 3 an anterior headlight is shown, where the daytime running light device comprises three surfaces to be illuminated 4 straight. Additionally, with the lighthouse lighting device 1 of the present invention it is possible to generate different geometric shapes, essentially, to illuminate the perimeter of polygonal surfaces 20 by extrapolating the concept presented and associating each surface to be illuminated 4 with a side of said polygonal surface.

    The details, shapes, dimensions and other accessory elements, as well as the components used in the implementation of the lighting device for headlamp of 25 vehicles may be conveniently replaced by others that are technically equivalent, and do not depart from the essentiality of the invention or the scope defined by the claims that are included after the following list.

     30

    List references:

    1 lighthouse
    2 light source 35
    3 light guide
    31 first body of reflection
    311st reflection face
    311b second reflection face
    311c third reflection face 5
    32 second reflection surface
    321 region
    322 faceted optics
    33 third reflection surface
    4 surface to light 10
    5 cover
    6 centering element
    7 electronics
    8 radiator
     fifteen
    权利要求:
    Claims (1)
    [1]

    1- Lighting device for headlight (1) of vehicle, where the lighting device comprises 5
    - at least one light source (2),
    - at least one light guide (3) comprising at least one surface to be illuminated (4), and at least one first reflection body (31) facing the at least one light source (2) so that the less a beam of light emitted by the at least one light source (2) affects the at least a first reflection body (31), 10
    characterized because
    - the at least one light guide (3) comprises at least a third reflection surface (33) and at least a second reflection surface (32), which in turn comprises at least two regions (321), where the at at least a third reflection surface (33) and the at least two regions (321) surround at least a first reflection body (31), 15
    - the at least one first reflection body (31) comprises at least three reflection faces arranged in a pyramidal form, so that the light incident on the at least one reflection body (31) is substantially dispersed in at least three different directions ,
    or where a first reflection face (311a) is configured to internally reflect in the light guide (3) the light emitted by the at least one light source (2) towards the at least a third reflection surface (33) ,
    or where a second reflection face (311b) and a third reflection face (311c) are configured to internally reflect in the light guide (3) the light emitted by the at least one light source (2) towards the at least a second reflection surface (32), 25
    - the at least one second reflection surface (32) is configured to internally reflect in the light guide (3) the incident light towards the at least a third reflection surface (33),
    - the at least one third reflection surface (33) is configured to internally reflect in the light guide (3) the incident light towards the at least one surface to be illuminated 30 (4).
    2- Lighting device for a vehicle headlight (1) according to claim 1, characterized in that the at least two regions (321) of the at least one second reflection surface (32) comprise a plurality of faceted optics (322) for the 35 reflection of the incident light, so that the light reflected on the at least a second reflection surface (32) is substantially in the same direction towards the third reflection surface (33).
    3- Lighting device for a vehicle headlight (1) according to claim 1, characterized in that it comprises at least one cover (5) superimposed on the at least one light guide (3), wherein the at least one cover (5) defines the at least one surface to be illuminated (4), so that it allows a light output from the at least one light guide (3).
    4- Lighting device for headlight (1) of vehicle according to claim 3, characterized in that the cover (5) is black.
    5- Lighting device for headlight (1) of vehicle according to claim 1, characterized in that it comprises a centering element (6) of the light guide (3).
     fifteen
    6- Lighting device for headlight (1) of vehicle according to claim 1, characterized in that it comprises at least three light sources (2) and at least three surfaces to be illuminated (4), wherein the at least one light guide ( 3) comprises at least three first reflection bodies (31) arranged in pyramidal form, at least three second reflection surfaces (32) and at least three third reflection surfaces (33) that direct the light 20 towards the at least three surfaces to be illuminated (4), where the at least three surfaces to be illuminated (4) form a polygon of at least three sides.
    7- Lighting device for a vehicle headlight (1) according to claim 6, characterized in that it comprises a single common light guide (3) for the at least three light sources (2) and annexes to the at least three sources of light light (2).
    8- Lighting device for a vehicle headlight (1) according to claim 6, characterized in that the at least one beam of light emitted by one of the at least three light sources (2) strikes the first reflection body (31) facing the light source (2) and 30 on the second and third reflection surfaces (32, 33) surrounding the first reflection body (31), so that one of the at least three light sources (2) Illuminates one of the at least three surfaces to be illuminated (4).
    9- Lighting device for a vehicle headlight (1) according to claim 6, characterized in that it comprises an electronic (7) and a radiator (8) common for the at least three light sources (2) and annexes to the at least three light sources (2).
    10- Lighting device for a vehicle headlight (1) according to claim 1, characterized in that the at least one second reflection face (311b) is configured to reflect the incident light towards a first of the at least two regions (321) and because the at least one third reflection face (311c) is configured to reflect the incident light towards a second of the at least two regions (321), where the first and second of the at least two regions (321) are comprised in the same second 10 reflection surface (32).
    11- Lighting device for a vehicle headlight (1) according to claim 1, characterized in that the light reflected by at least one second reflection face (311b) and at least one third reflection face (311c) is in the same direction , where the at least one second reflection face (311b) and the at least one third reflection face (311c) are comprised in the same first reflection body (31).
    12- Lighting device for a vehicle headlight (1) according to claim 11, characterized in that the light reflected by at least one second reflection face (311b) and 20 by at least one third reflection face (311c) is in one direction opposite, where the at least a second reflection face (311b) and the at least a third reflection face (311c) are comprised in the same first reflection body (31).
    13- A vehicle headlight lighting device (1) according to claim 1, characterized in that the light reflected by at least one of the first reflection faces (311a) is in a direction substantially perpendicular to the light reflected by at least one of the second or third reflection faces (311b, 311c), where at least one of the first reflection faces (311a) and at least one of the second or third reflection faces (311b, 311c) are comprised in the same first body of reflection (31). 30
    14- Illumination device for headlight (1) of vehicle according to claim 1, characterized in that the material of the light guide (3) is high transmissive optical polycarbonate.
     35
    15- Vehicle headlight (1) comprising a lighting device according to claim 1.
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    同族专利:
    公开号 | 公开日
    EP3187776A1|2017-07-05|
    ES2575998B2|2016-12-27|
    EP3187776B1|2021-03-31|
    引用文献:
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    US20050286262A1|2004-06-24|2005-12-29|Jean-Claude Gasquet|Lighting and/or signalling device with optical guide|
    ES2330969T3|2006-05-16|2009-12-17|Valeo Vision|LIGHTING AND / OR SIGNALING DEVICE FOR AUTOMOBILE VEHICLE.|
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    EP2693105A2|2012-07-31|2014-02-05|Stanley Electric Co., Ltd.|Vehicle lighting unit|
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    DE102013215471A1|2013-08-06|2015-03-05|Automotive Lighting Reutlingen Gmbh|Plate-shaped light guide element made of a transparent material and light module for a motor vehicle lighting device with such a light guide element|
    JP2015041448A|2013-08-21|2015-03-02|東芝ライテック株式会社|Lighting device and lighting device for mobile object|
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    法律状态:
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    优先权:
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    ES201531914A|ES2575998B2|2015-12-28|2015-12-28|Lighting device for vehicle headlight|ES201531914A| ES2575998B2|2015-12-28|2015-12-28|Lighting device for vehicle headlight|
    EP16382572.2A| EP3187776B1|2015-12-28|2016-11-29|Lightning device for a vehicle light|
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