• 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:
    External lighting device for a vehicle (1), with a light emitter (21), an outer cover (41), partially transparent, so as to transmit light generated by the at least one light emitter (21) towards the exterior of the vehicle (1), a diffuser (42) of light, which homogenizes the light emitted by the at least one light emitter (21), wherein the light diffuser (42) is arranged adjacent to at least a portion of an inner surface of the outer covering (41). The outer covering (41) and the diffuser (42) are over-injected by a multiple injection process, first injecting the outer covering (41), and then the diffuser (42) in a portion of the inner surface of the outer covering (41). This creates a clean signature effect in three dimensions, eliminating optical noises as a result of the superposition of the different components. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2710076A1
    申请号:ES201731225
    申请日:2017-10-17
    公开日:2019-04-22
    发明作者:Massana Ernest Corull；Mesa Liliana Ramirez；Ruiz Tony Gallardo；Cela Jordi Castells
    申请人:SEAT SA；
    IPC主号:
    专利说明:

    [0001]
    [0002] Exterior lighting device for a vehicle, and manufacturing method
    [0003]
    [0004] OBJECT OF THE INVENTION
    [0005]
    [0006] The present patent application has as its object an exterior lighting device for a vehicle according to claim 1, which incorporates remarkable innovations and advantages, together with a method of manufacturing a lighting device, according to claim 13.
    [0007]
    [0008] BACKGROUND OF THE INVENTION
    [0009]
    [0010] The lighting devices of the current vehicles, specifically the pilots or signaling devices arranged in the rear part of the vehicle, have a protective component or external cover, in order to protect the internal components, such as a source of illumination. This coverage must have some transmission of light towards the outside, so that the light emitted towards the exterior is maximized, while various forms or geometries are presented in order to achieve a more elegant design of the exterior of the vehicle. .
    [0011]
    [0012] In this regard, it is known from the state of the art, according to the document US20050003159 discloses a cover of a headlight that includes a resin layer of a first color. Said layer is laminated and molded on a resin layer of a second light color. The second layer projects from the first layer. The first layer comes into contact with the second layer of molten resin. The first resin layer is not mixed with the second layer.
    [0013]
    [0014] In said document there is thus described a generic process of over-injecting a first resin onto a second resin in order that the first resin does not mix or move before the fact that the second resin comes into contact with said first resin in a molten state. The inner layer does not protrude from the headlight cavity. It is observed, unlike the present invention, that the inner layer does not make any Luminous treatment function, but it is only an opaque element that prevents the passage of light.
    [0015]
    [0016] It is also known from the state of the art, according to document US20080180970, a headlight with a housing and a lighting unit. The lighting unit is divided into at least two separate windows, with an area that does not allow the transmission of light. The objective of the present invention is to achieve a continuous illumination zone between two separate light transmission zones. In this way, despite the split light window, a continuous light transmission can be perceived for the observer, when both light windows fulfill the same lighting function. Said document also proposes a tulip, or outer covering, formed by two layers formed through a multi-injection process.
    [0017]
    [0018] It is also known from the state of the art, according to document US20080088926, a molding process for manufacturing a molded part having multiple individual optical elements with the same or different dimensions. This is achieved through the use of a multiple injection process. In the first stage, the optical elements are molded without any connection between them. In the second stage, a plastic layer is molded to join all the optical elements to create a single piece. The molded part consists of two injections of plastic with optical elements that is more easily adaptable to a variety of different designs for lights that have two or more colors. It is emphasized that the inclusion of optical elements in the external coverage causes non-homogeneous discontinuities in the illuminated areas.
    [0019]
    [0020] Thus, and in view of all the above, it is seen that there is still a need to have an exterior lighting device for a vehicle that allows to reduce the number of components and decrease the volume of critical areas, in order to create an effect clean of signature in three dimensions, and to eliminate optical noises as a result of the superposition of the different illuminating components.
    [0021]
    [0022] DESCRIPTION OF THE INVENTION
    [0023] The present invention consists of an external lighting device for a vehicle, and in an associated manufacturing method, in particular of an exterior cover or tulip of the headlight.
    [0024]
    [0025] By tulipa or exterior coverage is understood the exterior part of the pilot, fulfilling a function of closing it and protecting it from external agents and impacts. It is generally a transparent element and not a diffuser. The tulipas, or external covers, can have optical structures to improve the visibility, the field of illumination covered, or also due to design requirements. In the present invention, the inventive concept of presenting a tulip integrating a diffusing material is provided, by injecting the diffusing material directly into the tulip.
    [0026]
    [0027] As a known solution to date, and in order to achieve a signature or contour effect illuminated with a diffuse and homogeneous light, the interior of the pilot comprises a diffuser element arranged at a certain distance from the light emitters. Said distance is necessary to achieve homogeneity in the light emitted by the pilot. Additionally, the diffuser element was arranged at a certain distance from the tulip, in order to facilitate the assembly process of the tulip with the housing, usually by a vibration welding process.
    [0028]
    [0029] The designs sought previously consist of illuminated contours or screenprints, said screenprints being on a normally flat surface. Normally it is a surface substantially perpendicular to the direction of conduction. The current and future designs seek to generate illuminated surfaces in three dimensions, generating illuminated volumes that stand out in the direction of conduction. However, by combining the lighting technology with diffuser element explained above with the three-dimensional screenprints, noises and distortions are created in the brightness lines, while the volume occupied by the elements of the lighting device is greater. These noises are due to the fact that the diffuser element is substantially flat and the distance to the tulip or outer cover is variable, depending on its design. Thus, the edges of the outer covering will generate to the external observer black lines on the diffusing element, thus creating reflections and diffraction and, in turn, a non-homogeneous illumination.
    [0030]
    [0031] The present invention aims to be able to reconcile the design and the technique in the field of complying with the legislation in force relative to the visibility angles of the functions of signaling such as position and intermittency. It is also intended to improve the continuity in the lighting of signaling functions in vehicles that require split pilots, minimizing unlit areas between fixed pilot and mobile pilot, and avoiding the appearance of spreads, noise and distortions that arise when the diffuser It is separated from the outer shell or tulip.
    [0032]
    [0033] Detail on the other hand that the current process of mounting a vehicle headlight, incorporates a stage in which the tulip is attached to the housing by vibration. In this process the welding between both components takes place producing the union and sealing between both. To do this, it is necessary to use a minimum safety distance of at least 2 mm between components around the tulip in order to avoid interference or unwanted contacts.
    [0034]
    [0035] Additionally, other technical advantages of the present invention with respect to the concept of tulip or outer covering with distanced diffuser element, would be a reduction of the volume occupied by the elements, both in the direction X, that is to say in the direction of advancement of the vehicle, as in Z, ie in the vertical direction, while allowing a reduction in time and costs in the manufacturing process and the use of additional parts and tools.
    [0036]
    [0037] In particular, the present invention relates to an exterior lighting device for a vehicle, comprising at least one light emitter, an outer cover, where the outer cover is partially transparent, so that the outer cover allows to transmit a light generated by the at least one light emitter towards the outside of the vehicle, a light diffuser, where the diffuser homogenizes the light emitted by the at least one light emitter, wherein the light diffuser is arranged adjacent to at least a portion of a interior surface of the outer covering.
    [0038]
    [0039] Thus, the diffuser fulfills the function of generating a homogenous light. An observer outside the vehicle can visualize an illuminated surface in a constant and homogeneous way, with the same intensity of illumination.
    [0040]
    [0041] It is specified that the feature that the diffuser is arranged adjacent to the outer covering means that it is in contact, that is to say that the diffuser is arranged adjacent to the outer covering, located in an overlapping manner, without a space between both components. In a preferred embodiment, the entire diffuser contacts the inner surface of the outer covering. Thus, the external coverage may be larger than the diffuser. However, the diffuser is in contact with the outer covering portion that is in front of it. As mentioned, external coverage means a piece that fulfills a protective function of the interior components of the vehicle headlight.
    [0042]
    [0043] The advantages of the present invention make it possible to obtain novel designs in the headlights of vehicles, especially in combination with external covers or tulips with three-dimensional shapes. Thus, an effect of the silkscreen or illuminated contour is achieved, much more impressive, maintaining the homogeneity in the light generated, decreasing the space or volume occupied by the integrating elements. Thus, the undesired effect of optical "noises" and luminous interferences, in the signature, or illuminated form, is minimized. It also becomes possible to reduce the unenlightened franchise, or space between the various headlights that make up the entire lighting device on each side of the vehicle.
    [0044]
    [0045] Note that having the diffuser next to the tulip or outer cover provides a great improvement in terms of visibility. Currently, tests of photometry, in particular of angles in which a certain light is visible, must be passed. The fact that it is the tulip or outer cover that integrates the diffuser, makes it the outer glass itself that directly illuminates, so that you can increase the freedom of design and get designs more closed, ie concave, with a greater angle of visibility from an observation point in the same section on the vehicle floor, and preferably from a lateral angle.
    [0046]
    [0047] Additionally, the present invention makes it possible to obtain an external lighting device with an improved aesthetic effect, because it is the glass or outer covering itself that illuminates directly, causing a better visual effect. In addition, and thanks to the fact that the diffuser is arranged adjacent to the external cover, the outer cover will light homogeneously. In the current designs, which do not benefit from the present invention, a substantially transparent outer covering and an internal surface illuminated behind and spaced from the outer covering are observed.
    [0048]
    [0049] According to another aspect of the invention, the outer covering is made of plastic material and the light diffuser is made of plastic material, where the outer covering and the diffuser are produced by means of an over-injection process. In this way the diffuser element is contiguous to external coverage, as a result of the manufacturing process, benefiting additionally from a faster production process and lower tooling costs.
    [0050]
    [0051] In a preferred embodiment of the invention, the external lighting device comprises a third element, where the third element is substantially opaque in a manner that prevents transmission of a light generated by the at least one light emitter to the outside of the vehicle, where the third element is disposed adjacent to at least a portion of the inner surface of the outer covering. Thus, the third element, preferably composed of a plastic material, fulfills a screening function of the light emitted by at least one light emitter, so that, according to a preferred embodiment, where there is a diffuser, there is no third element and vice versa. Thus, the third element delimits the areas of light transmission towards the outside, helping to generate the screen print or desired illuminated contour.
    [0052]
    [0053] More particularly, the outer covering is made of plastic material and the third element is made of plastic material, where the outer covering and the third element are produced by means of an over-injection process. In this way, both components are contiguous and solidary, improving their sealing performance and opacity before a light transmission through an unwanted way.
    [0054]
    [0055] On the other hand, the diffuser is disposed adjacent to a first portion of the inner surface of the outer cover and the third element is disposed adjacent a second portion of the inner surface of the outer cover. In this way, there is a distribution of the outer coverage areas, in some there is a way for a transmission of light, according to certain properties, and in others there is an opacity, facing the non-transmission of light by unwanted areas according to design.
    [0056]
    [0057] According to a particular embodiment of the invention, the third element is disposed adjacent a portion of the inner surface of the outer covering and a portion of the inner surface of the diffuser. Thus, in order to optimize the overlap between the diffuser and the third element, a disposition is generated where the diffuser is between the third element and the external cover, there being always at least one material adjacent to the outer cover. In this way, there is a perfect fit between the three components, optimizing the sealing performance, while the transmission of light, in the directions and areas desired by design.
    [0058] According to another particular embodiment of the invention, the light diffuser is arranged adjacent to a portion of the inner surface of the outer covering and to a portion of the inner surface of the third element. Thus, in order to optimize the overlap between the diffuser and the third element, a disposition is generated where the third element is between the diffuser and the outer covering, there being always at least one material contiguous to the outer covering. In this way, there is a perfect fit between the three components, optimizing the sealing performance, while the transmission of light, in the directions and areas desired by design.
    [0059]
    [0060] According to another preferred embodiment of the invention, the outer covering is substantially transparent red. In this way, the vehicle headlight has a uniform surface, preferably of said red color, so that it adjusts to the type of light signal needed, both for a rear brake light and for a rear position light.
    [0061]
    [0062] More specifically, the third element is opaque black, so that it has good opacity performance, or obstruction of the passage of light towards the exterior of the lighting device.
    [0063]
    [0064] Advantageously, the outer covering is made of PMMA (methacrylate or polymethylmethacrylate), so that it benefits from the performance of said material in terms of strength and good weldability with the shell material, which is preferably ABS (acrylonitrile butadiene styrene) , a plastic resistant to impact and shock, or PC (polycarbonate), a plastic easy to work with, mold and thermoform.
    [0065]
    [0066] Note that the external coverage, preferably of PMMA, is not necessarily transparent in all its zones, but in the light outputs of the functions of the vehicle's headlight.
    [0067]
    [0068] Additionally, the diffuser is PMMA, benefiting also from the benefits of said plastic material. A diffuser means a light transmitting element, according to properties determined in intensity and direction. Specify that the greater diffusion, the less transmission of light and vice versa. Equally to greater homogeneity, lower efficiency (light issued) and vice versa. The thickness of the filter, or diffuser element, also influences the degree of diffusion.
    [0069]
    [0070] Mention that the diffuser material of PMMA is, preferably, one of the group of DF21, DF22, DF23 or 0V200 of Evonik, with a treatment with particles in the interior that reflect light in all directions, getting a uniformly illuminated surface .
    [0071]
    [0072] Mention further that the light source, preferably a LED, and alternatively a lamp or other lighting devices, is presented behind the diffuser at a sufficient distance. In order to avoid the generation of bright spots and dark spots, the minimum distance between the light source and the diffuser is 30 mm, preferably staying in a range of 20-40 mm.
    [0073]
    [0074] According to another aspect of the invention, the outer covering comprises at least one edge, where the at least one edge is in the transmission zone of the light generated by the at least one light emitter towards the outside of the vehicle. Thus, the outer covering has a non-flat outer covering, having surfaces in different planes. Preferably, the outer covering extends in the forward direction of the vehicle. It is observed that the objective is to illuminate said volume or three-dimensional exterior coverage. Note that the diffuser copies or reproduces said three-dimensional volume, so that it also copies said edge, since the diffuser is contiguous with the external coverage, as already mentioned.
    [0075]
    [0076] Thus, as mentioned above, with a traditional structure of the lighting device, the plies or edges of the outer tulip or outer glass will produce the generation of black lines towards the interior of the pilot, that is, reflections and light diffraction. The fact of producing a diffuser that directly copies the shape of the tulip avoids this aesthetic problem, generating a homogeneously illuminated volume.
    [0077]
    [0078] Another object of the present invention is a method of manufacturing a lighting device, wherein the outer covering and the diffuser are over-injected by a multiple injection process, comprising the steps of, first, injecting the outer covering, and second, inject the diffuser in a portion of the inner surface of the outer covering. In this way the contiguity of the diffuser with respect to the coverage is achieved Exterior. Thus, and in order to obtain a vehicle headlight with an illuminated signature integrated directly in the tuiipa or external cover, it is advantageous to inject the materials of both components by means of multiple injection.
    [0079]
    [0080] Additionally, the manufacturing method comprises a further step of injecting the third substantially opaque element on at least a portion of the inner surface of the outer covering. In this way, the contiguity of the third substantially opaque element is achieved with respect to the outer covering.
    [0081]
    [0082] From the above it follows that, in a preferred embodiment, the third element is arranged adjacent to a portion of the inner surface of the outer covering and to a portion of the inner surface of the diffuser. In another preferred embodiment, the light diffuser is disposed adjacent a portion of the inner surface of the outer cover and a portion of the inner surface of the third element.
    [0083]
    [0084] The accompanying drawings show, by way of non-limiting example, an exterior lighting device for a vehicle, and an associated manufacturing method, constituted in accordance with the invention. Other features and advantages of said exterior lighting device for a vehicle, and associated manufacturing method, object of the present invention, will be apparent from the description of a preferred, but not exclusive embodiment, which is illustrated by way of example not limitative in the accompanying drawings, in which:
    [0085]
    [0086] BRIEF DESCRIPTION OF THE DRAWINGS
    [0087]
    [0088] Figure 1.- It is a perspective view of an exterior lighting device for a vehicle, according to the present invention.
    [0089] Figure 2A.- It is a perspective view of the exploded view of a first module of an external lighting device for a vehicle, according to the present invention.
    [0090] Figure 2B.- It is a perspective view of the exploded view of a second module of an external lighting device for a vehicle, according to the present invention. Figure 3A.- It is a front view of the first and second modules of an exterior lighting device for a vehicle, according to the present invention.
    [0091] Figure 3B .- is a sectional view of the first module of an external lighting device for a vehicle, according to the present invention.
    [0092]
    [0093] DESCRIPTION OF A PREFERRED EMBODIMENT
    [0094]
    [0095] In view of the mentioned figures and, in accordance with the numeration adopted, an example of a preferred embodiment of the invention can be observed, which comprises the parts and elements that are indicated and described in detail below.
    [0096]
    [0097] FIG. 1 shows, illustratively, an external lighting device 2 for a vehicle 1 with an outer cover 41, with a particular design. The exterior lighting device 2 is located on the rear and left side of a vehicle 1, where the exterior lighting device 2 comprises a first module or half, located at the rear end of the vehicle 1, where the first module is integral with the structure of the vehicle. In addition, the exterior lighting device 2 comprises a second module or half, located adjacent to the first module and integral with the rear door of the vehicle 1. In the present description reference is made in a non-limiting manner to a lighting device composed of two modules, the invention can also be valid for a single module or for more than two modules.
    [0098]
    [0099] In said figure 1 there is observed an external lighting device 2 with the particularity that the outer cover 41 comprises at least one edge, so that it has a three-dimensional design or volume towards the exterior of the vehicle 1. The light transmission goes to occur also in the area where these edges exist, so that, in order for an outside observer to visualize a homogeneously illuminated three-dimensional surface, the optical structure used must be modified. By three-dimensional exterior coverage 41 means a cover composed of a non-continuous surface, with different planes separated by edges. In this way, it is sought to generate illuminated surfaces that protrude from the surface of the vehicle 1.
    [0100]
    [0101] FIG. 2A shows, illustratively, an exploded view of the first module of an exterior lighting device 2 for a vehicle 1, where the succession of the following parts is seen in its mounting arrangement: a housing 22, a third element 43, a diffuser 42 and an outer cover 41. Thus, the housing 22 and the outer cover 41 generate an interior volume, which houses a set of optical elements that allow generating a light with certain properties. Thus, in the interior volume a diffuser 42 and at least one light emitter 21 are housed, in addition to other components such as light dividers, optics, printed circuit boards, etc.
    [0102]
    [0103] To generate a homogeneously illuminated screen or outline, a light diffuser 42 is used, which is arranged between the at least one light emitter 21 and the outer cover 41. Additionally, it can be noted that the shape of the third element 43 and the diffuser 42 are complementary, so that the areas that will allow the transmission of light to the outside, through the diffuser 42, and the areas that are going to obstruct the transmission of light towards the outside, are precisely delimited, that is, in the third element 43.
    [0104]
    [0105] Figure 2B shows, illustratively, an exploded view of a second module of an exterior lighting device 2 for a vehicle 1 sharing the same structure and sequence as in the first module, with a different illuminated screen or outline. Thus, the succession of the following parts in its mounting arrangement is observed: the housing 22, the third element 43, the diffuser 42 and the outer covering 41. Accordingly, the light will be transmitted through the outer cover 41 in different areas of the first module, also delimited by the third element 43.
    [0106]
    [0107] FIG. 3A shows, illustratively, a front view of the first and second modules of an external lighting device 2 for a vehicle 1. One of the main advantages of the present invention is to achieve that the lighting occurs in the most external zone possible. Thus, an external observer will visualize an effect that will be the outer coverage 41 that directly illuminates. Advantageously, when the lighting occurs directly on the outermost element of the external lighting device 2 and not on internal elements, the clearance or separation space between the first module and the second module of the external lighting device 2 is minimal, achieving a better finish and visual appearance.
    [0108]
    [0109] Furthermore, the fact of directly illuminating the outer cover 41 allows to increase the angle or field in which the external lighting device 2 will be seen from the outside. Thus, a greater freedom of design is achieved to overcome the current regulations regarding this theme.
    [0110] FIG. 3B shows, illustratively, a sectional view of the first module of an exterior lighting device 2 for a vehicle 1. In said section view, at least two light emitters 21 are visible, located inside the housing 22. In this case, the light emitters 21 generate the same lighting function, being able alternatively to generate different lighting functions. In addition, each light emitter 21 illuminates a separate area. Preferably, a diffusing element 42 is located facing the light emitter 21 in order to homogenize the emitted light. In addition, the diffusing element 42 is located adjacent to the outer cover 41. Adjacent to the diffusing element 42 is the third element 43, also located adjacent to the outer cover 41.
    [0111]
    [0112] Also in Figure 3B is observed as the interior of the chamber delimited between the outer cover 41 and the inner cover or housing 22 is full of light, so that light escapes through the areas of the diffuser 42. Alternatively there may also be some channels that direct light directly from the light emitter 21 to the area of the diffuser 42, so as to avoid light losses. Said channels are preferably of a matt white material.
    [0113]
    [0114] It should be mentioned that the outer cover 41, in a preferred embodiment, is substantially transparent red in color. It can also be the outer covering 41, either monocolored (white or red), bicolor (red with white window), with a thin layer molded on top ("skinmolding"), either partially or totally, in both cases by over-injection. Note that the outer covering 41 or tulip can be preferably between 2 and 2.2 mm thick, and in the case of a thin layer molded on top ("skinmolding") the thickness can be between 4 and 5 mm
    [0115]
    [0116] More particularly, the third element 43 is opaque black, preferably of PMMA, wherein the outer covering41, the diffuser 42 and the third element 43 are of a different color from each other.
    [0117]
    [0118] According to another aspect of the invention, the diffuser 42 is PMMA, with a treatment with particles in the interior that reflect light in all directions, achieving a uniformly illuminated surface.
    [0119] According to the exposed structure, the light emitted by the at least one light emitter 21 is emitted only in the areas where the diffuser 42 exists, allowing the transmission of light towards the outer cover 41 and this, in turn, towards the outside of the Vehicle 1. Said lighting areas are delimited by the third element 43, which prevents the transmission of light towards the exterior of the vehicle 1. Thus, only illumination of the desired screen or outline is achieved.
    [0120]
    [0121] In greater detail, the diffuser 42 is arranged adjacent to part of the inner surface of the outer cover 41. On the other hand, the third element 43 is disposed contiguous to part of the inner surface of the outer cover 41. It can be said that the third element 43 and diffuser 42 are alternately distributed over the entire interior surface of outer cover 41, so that where diffuser material 42 exists, there is no third element 43, and vice versa.
    [0122]
    [0123] The detail of a first portion of the inner surface 41a is also observed, which protrudes from the vehicle 1 relative to a second portion of the inner surface 41b. Thus, the diffuser 42 is arranged adjacent to the first portion of the interior surface, generating an effect where the outermost zone of the exterior lighting device 2 of the vehicle 1 is illuminated. On the other hand, the third element is disposed adjacent to the second. portion of the inner surface 41b.
    [0124]
    [0125] A preferred embodiment has been presented where the diffuser 42 and the third element 43 are arranged contiguously and alternately on the inner surface of the outer cover 41. Alternatively, the third element 43 may be disposed adjacent a portion of the surface interior of the outer cover 41 and superimposed on a portion of the interior surface of the diffuser 42, thus ensuring the overlap between both components and the generation of a more precise illuminated contour. Alternatively, there may be an embodiment in which, at least partially and in some point area, the diffuser 42 may be disposed adjacent a portion of the inner surface of the outer cover 41 and superimposed on a portion of the inner surface of the third element 43.
    [0126]
    [0127] According to yet another aspect of the invention, the light emitter 21 is an LED, with a distance between the light emitter 21 and the diffuser diffuser 42 of at least 20mm.
    [0128] According to a preferred embodiment of the invention, the outer covering 41 comprises at least one edge, where the at least one edge is in the transmission zone of the light generated by the at least one light emitter 21 towards the exterior of the vehicle 1. Said edge or sheet in the tulip or outer cover 41, can be an acute or obtuse angle. The function of said edges is to generate protruding volumes and geometrics of the vehicle 1.
    [0129]
    [0130] According to an alternative embodiment of the invention, the light emitter 21 can be oriented and emit light towards a receiving optical element, preferably elongated, either from the same diffuser 42, or from the same outer cover 41, not being essential on the entire inner surface of the outer covering that the diffuser 42 and outer cover 41 are superimposed.
    [0131]
    [0132] Another object of the invention is a method of manufacturing an external lighting device 2 wherein the outer cover 41 and the diffuser 42 are over-injected by a multiple injection process, comprising the steps of injecting the outer cover 41, and of injecting the diffuser 42 into a portion of the inner surface of the outer covering 41, so that the diffuser 42 is disposed adjacent the outer cover 41.
    [0133]
    [0134] Note that the multiple injection process can also be bi-injection, and is based on injecting the diffuser filter 42 directly into the tulip or outer shell 41.
    [0135]
    [0136] According to an alternative embodiment of the invention, and counting on the inclusion of a third element 43, three materials are injected at three times: diffuser 42, third element 43 black opaque, and the tulip or outer shell 41 as a layer of transparent red on these two previous elements. In the same way as that explained above, the third element 43 is arranged adjacent to the outer cover 41, delimiting the areas of the outer cover 41 that transmit light towards the exterior of the vehicle 1.
    [0137]
    [0138] Details, shapes, dimensions and other accessory elements, as! as the components used in the implementation of the exterior lighting device for a vehicle, and associated manufacturing method, may be conveniently substituted by others that are technically equivalent, and do not depart from the essentiality of the invention or the scope defined by the claims which are included below of the following list.
    [0139] List of numerical references:
    [0140]
    [0141] 1 vehicle
    [0142] 2 external lighting device
    [0143] 21 light emitter
    [0144] 22 housing
    [0145] 41 outside coverage
    [0146] 41st first portion of interior surface 41b second portion of interior surface 42 diffuser
    [0147] 43 third element
    权利要求:
    Claims (1)
    [0001]
    1- Exterior lighting device for a vehicle (1), comprising:
    - at least one light emitter (21),
    - an outer covering (41), wherein the outer covering (41) is partially transparent, so that the outer covering (41) allows to transmit a light generated by the at least one light emitter (21) towards the exterior of the vehicle ( one),
    - a light diffuser (42), where the diffuser (42) homogenizes the light emitted by the at least one light emitter (21),
    characterized in that the light diffuser (42) is disposed adjacent to at least a portion of an inner surface of the outer cover (41).
    2- External lighting device according to claim 1, characterized in that the outer covering (41) is made of plastic material and the diffuser (42) of light is made of plastic material, where the outer covering (41) and the diffuser (42) are produced by means of an over-injection process.
    3- External lighting device according to claim 1, characterized in that it comprises a third element (43), where the third element (43) is substantially opaque so as to prevent transmitting a light generated by the at least one light emitter (21) towards the outside of the vehicle (1), where the third element (43) is disposed adjacent to at least a portion of the inner surface of the outer cover (41).
    4. External lighting device according to claim 3, characterized in that the outer covering (41) is made of plastic material and the third element (43) is made of plastic material, where the outer covering (41) and the third element (43) are produced by means of an over-injection process.
    5- External lighting device according to any of claims 3 or 4, characterized in that the diffuser (42) is arranged adjacent to a first portion of the inner surface (41a) of the outer cover (41) and the third element (43) is disposed adjacent a second portion of the inner surface (41b) of the outer cover (41).
    6- External lighting device according to any of claims 3 or 4, characterized in that the third element (43) is arranged adjacent to a portion of the inner surface of the outer cover (41) and a portion of the interior surface of the diffuser ( 42).
    7- External lighting device according to any of claims 3 or 4, characterized in that the light diffuser (42) is arranged adjacent to a portion of the inner surface of the outer cover (41) and a portion of the inner surface of the third element (43).
    8. External lighting device according to any of the preceding claims, characterized in that the outer cover (41) is substantially transparent red.
    9- Exterior lighting device according to any of claims 3 to 7, characterized in that the third element (43) is opaque black.
    10- Exterior lighting device according to any of the preceding claims, characterized in that the outer cover (41) is PMMA.
    11. External lighting device according to any of the preceding claims, characterized in that the diffuser (42) is made of PMMA.
    12- External lighting device according to any of the preceding claims, characterized in that the outer cover (41) comprises at least one edge, where the at least one edge is in the transmission area of the light generated by the at least one emitter of light (21) towards the outside of the vehicle (1).
    13. Method of manufacture of a lighting device according to any of the preceding claims, characterized in that the outer cover (41) and the diffuser (42) are over-injected by a multiple injection process, comprising the steps of:
    i) inject the outer covering (41),
    ii) injecting the diffuser (42) into a portion of the inner surface of the outer cover (41).
    14- Manufacturing method of a lighting device according to claim 13 characterized in that it comprises an additional step of injecting the third element (43) substantially opaque on at least a portion of the inner surface of the outer cover (41).
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    同族专利:
    公开号 | 公开日
    ES2710076B2|2020-06-08|
    EP3483499A1|2019-05-15|
    引用文献:
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    US7798687B2|2007-04-23|2010-09-21|Meiyin Lin|Modular light system for automobiles|
    ITPD20130075A1|2013-03-25|2014-09-26|Automotive Lighting Italia Spa|LIGHTING AND / OR SIGNALING DEVICE FOR VEHICLES AND ITS CONSTRUCTION METHOD|
    FR3026821B1|2014-10-03|2019-04-05|Psa Automobiles Sa.|SIGNALING LIGHT FOR MOTOR VEHICLE AND VEHICLE COMPRISING SUCH A FIRE|DE102018131777A1|2018-12-11|2020-06-18|Rehau Ag + Co|Cover element and method for producing a cover element|
    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201731225A|ES2710076B2|2017-10-17|2017-10-17|Exterior lighting device for a vehicle, and manufacturing method|ES201731225A| ES2710076B2|2017-10-17|2017-10-17|Exterior lighting device for a vehicle, and manufacturing method|
    EP18200727.8A| EP3483499A1|2017-10-17|2018-10-16|Outside illumination device for a vehicle, and method of manufacturing|
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