• 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 module for a vehicle. The lighting module (10) comprises at least one light emitter (1); at least one printed circuit board (2), where the at least one light emitter (1) is connected to the at least one printed circuit board (2); an output surface (3) of the light generated by the at least one light emitter (1); a first reflection surface (4) and a second reflection surface (5), where the first reflection surface (4) is configured to reflect a light emitted by the at least one light emitter (1) towards the second surface of reflection (5), and where the second reflection surface (5) is configured to reflect the light coming from the first reflection surface (4) towards the output surface (3), in which the at least one circuit board printed (2) comprises the second reflection surface (5). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2732764A1
    申请号:ES201830501
    申请日:2018-05-24
    公开日:2019-11-25
    发明作者:Sueiro Xesus Manoel Bendaña；Cosconera Xavier Piqué；Massana Ernest Corull；Guixe Ferran Puigdellivol
    申请人:SEAT SA；
    IPC主号:
    专利说明:

    [0001]
    [0002] Lighting module for a vehicle
    [0003]
    [0004] The present invention relates to a lighting module for a vehicle, which is compact and with a small number of parts.
    [0005]
    [0006] Background of the invention
    [0007]
    [0008] Different lighting modules are used in vehicles to perform the different lighting functions required, for example, the rear position lights, which allow rearward visibility during driving in low light conditions.
    [0009]
    [0010] This signaling is usually done on the two rear pilots and additionally, as a design trend, also with a narrow and elongated strip located centrally at the rear of the vehicle. In this way, a surface of the vehicle that goes from the pilot on the left side of the vehicle to the pilot on the right side of the vehicle is illuminated red. For this application you want the light to be very homogeneous, having a very compact and reduced space.
    [0011]
    [0012] In order to achieve a homogeneity can, there are different methods, such as using light guides with diffuser elements at the end or making the light influence on different surfaces, producing a reflection of the light beams in all directions, achieving a homogeneity of the light.
    [0013]
    [0014] The problem in vehicles lies in the space or volume available to generate these functions. In the example of the signaling function mentioned above, there is not enough space to place all the necessary optical parts in addition to the required electronics.
    [0015]
    [0016] Increasing the size of this lighting module has a negative impact on the design and / or the environment. In the example of the signaling function mentioned above, an increase in the volume required to generate the rear position light produces a reduction in the volume of the trunk or introducing strange geometries both in the gate, difficult to obtain through drawing processes, as in the module of lighting, protruding from the volume of the vehicle. The addition of optical surfaces, in addition to cause the increase in size, requires more parts, which increases the complexity of the system and its cost. In addition, increasing the number of light sources (LED) has a direct impact on cost.
    [0017]
    [0018] Therefore, an objective of the present invention is to provide a vehicle lighting module that is compact and less complex than conventional lighting modules, reducing the number of parts and allowing better electronic integration.
    [0019]
    [0020] Description of the invention
    [0021]
    [0022] With the lighting module of the invention, the aforementioned drawbacks are resolved, presenting other advantages that will be described below.
    [0023]
    [0024] The lighting module for a vehicle according to the present invention comprises:
    [0025] - at least one light emitter;
    [0026] - at least one printed circuit board, where the at least one light emitter is connected to the at least one printed circuit board;
    [0027] - an output surface of the light generated by the at least one light emitter;
    [0028] - a first reflection surface and a second reflection surface, where the first reflection surface is configured to reflect a light emitted by the at least one light emitter towards the second reflection surface, and where the second reflection surface is configured to reflect the light coming from the first reflection surface towards the exit surface,
    [0029] wherein the at least one printed circuit board comprises the second reflection surface.
    [0030]
    [0031] It should be noted that an output lens means an external lens or external coverage of the lighting module, where the light comes out of the lighting module. It is therefore an area of the external coverage of the lighting module intended to allow the extraction of light beams that generate a certain lighting function. It is therefore a partially transparent element, which can be of a certain color, for example red, to provide the signaling function with the required chromatic properties.
    [0032] In addition, the printed circuit board is where the one or more light emitters and the electronic components required for the execution of the signaling function are connected, thus being a common component in the lighting modules.
    [0033]
    [0034] The lighting module of the present invention is configured to produce substantially a first reflection of the light on the first reflection surface and a second reflection of the light on the second reflection surface. Advantageously, the second reflection occurs on the printed circuit board, not requiring additional elements.
    [0035]
    [0036] In the supposed case that the at least one light emitter emits the light directly towards the exit surface, an external observer would see an uneven distribution of the light beams. Thus, you could observe areas of high light intensity and areas of low light intensity, giving a feeling of low quality. The two reflection surfaces allow to extend the distance between the light emitter and the output surface, allowing the light cone emitted by the light emitter to be opened and achieving a homogeneity in the light extracted by the output surface.
    [0037]
    [0038] Advantageously, the second reflection surface is a surface of the printed circuit board. Thus, in the lighting module of the present invention, it is the printed circuit board itself that comprises the second reflection surface, not requiring an additional element for said second reflection surface, improving the package of the assembly.
    [0039]
    [0040] In addition, the surface of the printed circuit board is substantially flat, where the surface of the printed circuit board extends in a plane substantially perpendicular to the direction of light emission.
    [0041]
    [0042] According to a preferred embodiment, the surface of the printed circuit board is white. Using a white printed circuit board generates a highly efficient diffuse reflection by reflecting almost all of the light that hits the surface. On the contrary, and in a manner detrimental to the achievement of the present invention, a dark colored printed circuit board absorbs the incident light beams, reducing the energy efficiency of the lighting module. It should be noted that the entire printed circuit board may be white, thereby improving the internal reflection that occurs within the lighting module.
    [0043] The surface of the printed circuit board preferably comprises a plurality of grooves, and they have an optical function to open the field or beam of light reflected towards the output surface. Preferably, said slits are substantially parallel to each other, so that they allow the light beam or light distribution field to be opened in a certain direction. According to a preferred embodiment, the slits are arranged in a substantially vertical direction, so that they contribute to open the light field in the horizontal direction. Horizontal direction means the direction perpendicular to the direction of travel of the vehicle.
    [0044]
    [0045] It is important to note that it is beneficial to use a printed circuit board that includes electronics on both sides. On the back side you will have all the circuitry. On the front face you will have at least one light emitter and cooling elements, trying to free the maximum surface area for the second reflection to occur.
    [0046]
    [0047] Preferably, the at least one light emitter is disposed in a first zone of the printed circuit board near the first reflection surface, and the slits are arranged in a second zone of the printed circuit board near the outlet surface of the lighting module, specifically on the surface of the printed circuit board.
    [0048]
    [0049] It is noted that a gap is generated by the difference in height or difference in height between two copper plates, where the copper plates allow electricity to be conducted to the electrical consumers arranged on the printed circuit board. If the copper plates are arranged parallel to each other and with a minimum gap between them, a channel or slot is generated that allows the function of optics.
    [0050]
    [0051] According to a preferred embodiment, the first reflection surface is facing said at least one light emitter, where the first reflection surface is substantially concave, although it could also be flat, and where the first reflection surface is white . As explained above, the white surface finish minimizes the absorption of the light beams, improving internal reflection in the lighting module. The concave geometry of the first reflection surface is configured to correctly direct the light beams towards the second reflection surface.
    [0052]
    [0053] In addition, said first reflection surface is of a substantially matte finish.
    [0054] Additionally, it can comprise an irregular surface finish, generated by a granite or stretch marks in order to generate an optical noise in the light beams reflected by the first surface, favoring a dispersion of the light beams that improve the homogeneity of the light issued.
    [0055]
    [0056] In addition, the lighting module comprises a diffuser arranged between the second reflection surface and the output surface.
    [0057]
    [0058] Said diffuser is configured to deflect the light beams in all directions, for example, by means of cuts, granite / optical surfaces, etc. increasing the degree of homogeneity of the light extracted by the exit surface, for example of PMMA DF23 material.
    [0059]
    [0060] According to a preferred embodiment, the distance between the at least one light emitter and the diffuser is between 10 and 25 mm in the light output direction of the lighting module, said distance or separation being between the at least one light emitter and the minimum diffuser with the aim of opening the light beams emitted by the at least one light emitter.
    [0061]
    [0062] In addition, the lighting module comprises a mask suitable for blocking a portion of the light generated by the at least one light emitter, so that the light generated by the at least one light emitter exits the lighting module by the diffuser and , later, by the exit surface. Preferably, the first reflection surface is attached to the mask, and the first reflection surface can be obtained by means of an overinjection process.
    [0063]
    [0064] According to a preferred embodiment, the lighting module comprises a plurality of light emitters arranged substantially aligned on the printed circuit board along a first direction, where the first reflection surface, the second reflection surface and the surface Exit extend in the first direction. Preferably, the first direction is substantially perpendicular to the direction of output of the light reflected on the second reflection surface, and is also perpendicular to the main direction of light emission of the plurality of light emitters.
    [0065]
    [0066] Preferably, the diffuser and mask also extend in the first direction, and the slits extend in a direction perpendicular to the first direction, in a second address
    [0067]
    [0068] If we take the vehicle as a reference, the first direction would be a horizontal direction, perpendicular to the vehicle's direction of advance, thus allowing the lighting module to extend between the pilot on the right side of the vehicle to the pilot arranged in The left side of the vehicle. Additionally, the second direction would be a vertical direction. Thus, the slits allow to open the light beam in the horizontal direction.
    [0069]
    [0070] In this way, in a minimum volume occupied by the lighting module of the present invention, it is possible to generate an illuminated surface with high homogeneity.
    [0071]
    [0072] Brief description of the drawings
    [0073]
    [0074] For a better understanding of how much has been exposed, some drawings are attached in which, schematically and only by way of non-limiting example, a practical case of realization is represented.
    [0075]
    [0076] Figure 1 is an elevational view of the rear part of a vehicle that includes the lighting module according to the present invention; Y
    [0077]
    [0078] Figure 2 is a sectional view of the lighting module according to the present invention.
    [0079]
    [0080] Description of a preferred embodiment
    [0081]
    [0082] Figure 1 shows the rear part of a vehicle, which comprises the lighting module according to the present invention, indicated in general by reference number 10. Although it is represented in this position in Figure 1 by way of For example, it is clear that the lighting module 10 of the present invention can be placed in any suitable position of the vehicle, for any lighting function. In the preferred example of the present invention, the lighting module 10 performs the function of rear position light signaling and, in particular, illuminating an elongated and narrow surface arranged between the right rear light and the left rear light.
    [0083] Fig. 2 is a cross-sectional view of the lighting module 10 according to the present invention, comprising at least one light emitter 1, preferably a plurality of aligned light emitters, that is, placed in a straight line. For example, the or each light emitter 1 may be a light emitting diode (LED). For the sake of simplicity in the present description we will refer to the light emitter 1 in the singular, but the lighting module 10 can also comprise a plurality of light emitters.
    [0084]
    [0085] The lighting module 10 also comprises a printed circuit board 2, to which the light emitter 1 is connected and an output surface 3 of the light generated by the light emitter 1.
    [0086]
    [0087] The light from the light emitter 1 is reflected on a first reflection surface 4 and on a second reflection surface 5, where the first reflection surface 4 is configured to reflect the light emitted by the light emitter 1 towards the second surface of reflection 5, and where the second reflection surface 5 is configured to reflect the light coming from the first reflection surface 4 towards the output surface 3, as can be seen in Figure 2.
    [0088]
    [0089] The path of the light emitted by the light emitter 1 until it exits the exit surface 3 is represented by the arrows in Figure 2.
    [0090]
    [0091] According to the present invention, it is the printed circuit board 2 which comprises the second reflection surface 5. In particular, the second reflection surface 5 is a surface of the printed circuit board itself 2. Thus, they are not added additional elements, taking advantage of the existing ones to achieve an internal reflection of the light beams sufficient to achieve a homogeneity in the light emitted by the output surface 3.
    [0092]
    [0093] The printed circuit board 2 comprises a first zone and a second zone. The first zone comprises the at least one light emitter 1 and electronic components necessary to execute the lighting function. This first zone is arranged close to the first reflection surface 4. On the contrary, the second zone, or zone where the second reflection occurs, is free of electronic components. Particularly, there is a plurality of slits in said second zone. The second zone is arranged adjacent to the first zone of the printed circuit board 2, preferably in the area closest to the output surface 3.
    [0094] According to the embodiment shown, this surface of the printed circuit board 2 is substantially flat, and extends in a plane substantially perpendicular to the direction of light emission.
    [0095]
    [0096] In addition, to provide adequate light reflection characteristics, the surface of the printed circuit board 2 is white, and may comprise a plurality of grooves, which are preferably substantially parallel to each other, so as to allow the beam to open of light or field of distribution of light in a certain direction. The plurality of indentations have not been represented in the figures. According to the preferred embodiment, a groove would be arranged on the surface of the printed circuit board 2 just in the section represented in Figure 2, that is, extending from the lower area of the printed circuit board 2 to the emitter of light 1. The slit would perform the function of an optic, allowing to open the field of light beams reflected in the second reflection surface 5 in a horizontal plane.
    [0097]
    [0098] On the other hand, as shown in Figure 2, said first reflection surface 4 faces said at least one light emitter 1, is substantially concave and is also white in color, optimizing the photometric characteristics necessary for achieving the Object of the present invention.
    [0099]
    [0100] In the embodiment shown, the lighting module 10 according to the present invention also comprises a diffuser 6 disposed between the second reflection surface 5 and the outlet surface 3 and a mask 7 suitable for blocking a portion of the light generated by the at least one light emitter 1, the first reflection surface 4 being attached to the mask 7.
    [0101]
    [0102] In the presented section it is observed how the diffuser 6 is arranged between two masks 7. The function of each mask is to prevent light from being transmitted through them, allowing the light beams to be extracted from the lighting module 10 only by the diffuser 6, prior to crossing the output surface 3. Additionally, the lighting module 10 comprises a housing, which holds the plurality of components mentioned and, additionally, prevents the leakage of light beams from the back of the lighting module 10 , that is, the area opposite the diffuser 6.
    [0103]
    [0104] To achieve a compact design, the distance between the light emitter 1 and the diffuser 6 is preferably between 10 and 25 mm in the direction of light output of the light module. lighting 10. With a distance between the light emitter 1 and the diffuser 6 so small, if the light beams were emitted directly against the diffuser 6, an observer would see a heterogeneous illumination on the output surface 3, that is, with variations in intensity Thus, to achieve the said homogeneity, the light beams are reflected on the first reflection surface 4 and on the second reflection surface 5 to increase the distance traveled by the light beams. This will produce two diffuse reflections, that is, in all directions.
    [0105]
    [0106] As indicated above, preferably the lighting module 10 according to the present invention comprises a plurality of light emitters 1, which are arranged substantially aligned on the printed circuit board 2 along a first direction, and the first reflection surface 4, the second reflection surface 5 and the outlet surface 3 extend in said first direction, as well as the diffuser 6 and the mask 7.
    [0107]
    [0108] According to the embodiment shown, said first direction is substantially perpendicular to the direction of output of the light reflected on the second reflection surface 5.
    [0109]
    [0110] Thus, as can be seen in Figure 1, the lighting module 10 extends in the first direction, that is, across the width of the vehicle. A substantially wide surface but of a reduced height is illuminated. With the configuration set forth in the present invention it is achieved that, despite having a plurality of light emitters 1 arranged aligned and at a very small distance from the output surface 3, an external observer visualizes a homogeneous illuminated surface. As indicated above, a lighting module 10 is obtained which is compact and less complex than conventional lighting modules, reducing the number of parts and allowing better electronic integration.
    [0111]
    [0112] Although reference has been made to a specific embodiment of the invention, it is apparent to one skilled in the art that the described lighting module is susceptible to numerous variations and modifications, and that all the mentioned details can be replaced by others technically equivalent, without departing from the scope of protection defined by the appended claims.
    权利要求:
    Claims (15)
    [1]
    1. Lighting module (10) for a vehicle, where the lighting module comprises: - at least one light emitter (1);
    - at least one printed circuit board (2), where the at least one light emitter (1) is connected to the at least one printed circuit board (2);
    - an output surface (3) of the light generated by the at least one light emitter (1);
    - a first reflection surface (4) and a second reflection surface (5), where the first reflection surface (4) is configured to reflect a light emitted by the at least one light emitter (1) towards the second surface of reflection (5), and where the second reflection surface (5) is configured to reflect the light coming from the first reflection surface (4) towards the output surface (3),
    characterized in that the at least one printed circuit board (2) comprises the second reflection surface (5).
    [2]
    2. Lighting module (10) for a vehicle according to claim 1, wherein the second reflection surface (5) is a surface of the printed circuit board (2).
    [3]
    3. Lighting module (10) for a vehicle according to claim 2, wherein the surface of the printed circuit board (2) is substantially flat, where the surface of the printed circuit board (2) extends in a plane substantially perpendicular to the direction of light emission.
    [4]
    4. Lighting module (10) for a vehicle according to any one of claims 2 or 3, wherein the surface of the printed circuit board (2) is white.
    [5]
    5. Lighting module (10) for a vehicle according to any one of claims 2 or 4, wherein the surface of the printed circuit board (2) comprises a plurality of slits.
    [6]
    6. Lighting module (10) for a vehicle according to any one of the preceding claims, wherein the first reflection surface (4) faces said at least one light emitter (1).
    [7]
    7. Lighting module (10) for a vehicle according to any one of the claims 1 or 6, wherein the first reflection surface (4) is substantially concave.
    [8]
    8. Lighting module (10) for a vehicle according to any one of claims 1, 6 or 7, wherein the first reflection surface (4) is white.
    [9]
    9. Lighting module (10) for a vehicle according to any one of the preceding claims, wherein the lighting module comprises a diffuser (6) disposed between the second reflection surface (5) and the output surface ( 3).
    [10]
    10. Lighting module (10) for a vehicle according to claim 8, wherein the distance between the at least one light emitter (1) and the diffuser (6) is between 10 and 25 mm in the direction of light output of the lighting module.
    [11]
    11. Lighting module (10) for a vehicle according to any one of the preceding claims, wherein the lighting module comprises a mask (7) suitable for blocking a portion of the light generated by the at least one emitter of light (1).
    [12]
    12. Lighting module (10) for a vehicle according to claim 11, wherein the first reflection surface (4) is attached to the mask (7).
    [13]
    13. Lighting module (10) for a vehicle according to any one of the preceding claims, wherein the lighting module comprises a plurality of light emitters (1) arranged substantially aligned on the printed circuit board (2) along a first direction, where the first reflection surface (4), the second reflection surface (5) and the output surface (3) extend in the first direction.
    [14]
    14. Lighting module (10) for a vehicle according to claim 13, wherein the first direction is substantially perpendicular to the direction of light output reflected on the second reflection surface (5).
    [15]
    15. Lighting module (10) for a vehicle according to any one of claims 13 or 14, wherein the diffuser (6) and the mask (7) also extend in the first direction.
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    同族专利:
    公开号 | 公开日
    EP3572720A1|2019-11-27|
    ES2732764B2|2020-11-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB763376A|1954-05-11|1956-12-12|Reinhard Paul Henry Hinds|Improvements relating to vehicle lamps|
    US20060268555A1|2004-02-17|2006-11-30|Kelly William M|Utility lamp|
    US20070183167A1|2006-02-03|2007-08-09|Teruo Koike|Vehicle light|
    GB2461316A|2008-06-27|2009-12-30|Visteon Global Tech Inc|Back-lit Display|
    EP2295850A1|2009-09-14|2011-03-16|Valeo Vision|Lighting and/or signalling device for an automobile|
    JP2008258001A|2007-04-05|2008-10-23|Koito Mfg Co Ltd|Lamp unit of vehicular headlamp|
    DE102012220455A1|2012-11-09|2014-05-15|Osram Gmbh|LIGHTING DEVICE WITH SEMICONDUCTOR LIGHT SOURCE|
    AT516638A1|2014-12-17|2016-07-15|A B Mikroelektronik Ges Mit Beschränkter Haftung|Method for producing a circuit carrier and circuit carrier|
    法律状态:
    2019-11-25| BA2A| Patent application published|Ref document number: 2732764 Country of ref document: ES Kind code of ref document: A1 Effective date: 20191125 |
    2020-11-26| FG2A| Definitive protection|Ref document number: 2732764 Country of ref document: ES Kind code of ref document: B2 Effective date: 20201126 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201830501A|ES2732764B2|2018-05-24|2018-05-24|Lighting module for a vehicle|ES201830501A| ES2732764B2|2018-05-24|2018-05-24|Lighting module for a vehicle|
    EP19172728.8A| EP3572720A1|2018-05-24|2019-05-06|Lighting module for a vehicle|
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