• 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:
    A lighting device (1) comprising: - a support element (10); - a light source (2) mounted on the support element (10), the light source (2) emitting a light beam in a first direction (100); - a lens holder element (40); and - at least one lens (41) mounted on the lens holder element (40). The lighting device (1) further comprises: - a motor (20) mounted on the support element (10); and - an intermediate part (30) for moving the lens holder element (40) along the first direction (100), the intermediate part (30) having first coupling means for coupling to the lens holder element (40), and second coupling means for coupling to the motor (20); - the motor (20) being configured to act on the intermediate part (30) in order to move the lens holder element (40) between a first position in which the lens (41) is closer to the light source (2) and a second position in which the lens (41) is farther from the light source (2) inside the lighting device (1).
    公开号:ES2755173A2
    申请号:ES202090010
    申请日:2017-09-15
    公开日:2020-04-21
    发明作者:Antoine Pizetti；Laurent Diemunsch；Daniel Anderlini
    申请人:Grupo Antolin Ingenieria SA；
    IPC主号:
    专利说明:

    [0001] Adaptive lighting device
    [0002]
    [0003] TECHNICAL FIELD
    [0004]
    [0005] The present invention is encompassed within the lighting sector, and more specifically, in reading lighting devices especially for motor vehicles.
    [0006]
    [0007] BACKGROUND OF THE INVENTION
    [0008]
    [0009] Lighting devices for vehicle interiors are well known, the design and structural characteristics of which depend on their specific use and functionality. These interior lamps are especially applicable in vehicles, in which the light conditions and needs may vary from moment to moment, for example by varying between an ambient light, more or less diffuse, and a more intense light for reading, and it may be necessary to adapt those conditions individually.
    [0010]
    [0011] In the case of a motor vehicle, these lamps are normally placed inside the vehicle, on the roof, and are configured to give light to the passengers of the car, so that these lamps are arranged above the seats of the passengers. passengers, to give light individually to each passenger.
    [0012]
    [0013] Typically these lamps have a light source, a light source bracket, a lens, and a connection to an electrical power source. Sometimes the bracket can tilt around a horizontal axis (eg, parallel to the vehicle roof); the bracket can also be rotatable about a vertical axis.
    [0014]
    [0015] Patent document WO 2005/077714 shows an adjustable lighting assembly, comprising a housing, an LED, and a lens that is movable between a local lighting position and a general lighting position. The lighting assembly has a structure formed by a gimbal mechanism (in turn formed by several elements), a lens support, as well as a locking mechanism with leaf-shaped springs. In addition to being a set of lighting whose drive for adjustment is completely manual.
    [0016]
    [0017] There is, therefore, a need to provide a lamp for vehicle interiors, capable of self-adjusting according to the needs of the vehicle occupants at all times, through a simple adjustable lens position. and durable in time.
    [0018] DESCRIPTION OF THE INVENTION
    [0019]
    [0020] The invention relates to a lighting device according to claim 1. Preferred embodiments of the lighting device are defined in the dependent claims.
    [0021]
    [0022] The lighting device of the present invention comprises:
    [0023] - a support element
    [0024] - a light source mounted on the support element, the light source emitting a light beam in a first essentially vertical direction;
    [0025] - a lens holder element; and
    [0026] - at least one lens mounted on the lens holder element.
    [0027]
    [0028] The support element has the function of serving as a base and position reference for the different elements of the lighting device, which is preferably mounted inside a motor vehicle, preferably on the ceiling.
    [0029]
    [0030] In the context of the present invention, lens is understood as any optical element capable of deflecting light rays. It can be a single lens or multiple lenses arranged according to a specific configuration.
    [0031]
    [0032] In accordance with an aspect of the invention, the lighting device further comprises: a motor mounted on the support element; and,
    [0033] - an intermediate part to move the lens-holder element along the first direction, this part having first coupling means for coupling to the lens-holder element, and second coupling means for coupling to the motor;
    [0034] - the motor being configured to act on the part to move the lens holder within the lighting device between a first position in which the lens is closer to the light source, the lighting device providing a wide lighting beam, and a second position where the lens is further from the light source, where the lighting device provides a narrow lighting beam.
    [0035]
    [0036] The lighting device of the present invention as just defined provides an adjustable lighting beam by a simple configuration with a motor-actuated intermediate piece capable of displacing the lens within the lighting device between at least two positions in where the lens-light source distance is different and a light beam of different characteristics is provided: a narrow and highly focused beam (eg suitable for reading) and a wide and poorly focused beam (suitable for general lighting).
    [0037]
    [0038] In the context of the present invention, motor is understood as any electromechanical actuation means that is capable of converting an electrical input into a mechanical output (eg. in discrete linear or angular displacements).
    [0039]
    [0040] Preferably this motor or actuation means is electrically connected to a control, capable of adjusting the position of the lens, and therefore the light beam of the lamp, either automatically according to certain parameters, or intentionally with a drive, by For example, an actuation button, so that a user can operate the motor remotely, without having to act directly on the motor.
    [0041]
    [0042] In some embodiments the first engaging means of the intermediate piece for engaging the lens holder element comprises a plurality of projections, the lens holder element comprising a plurality of helical grooves each projection being configured to slide into a helical groove of the lens holder element. lenses. In this way, the protrusions of the displacement piece in its sliding over the helical grooves provide a simple and robust way to transform the rotational movement of the intermediate piece, driven by the motor, into a linear displacement of the lens-holder element. in the first direction.
    [0043]
    [0044] In some embodiments, the second coupling means of the intermediate piece for coupling to the motor comprise a toothed portion, configured to engage on an output element - such as a pinion - of the motor. In this way, a simple coupling between the intermediate piece and the motor is achieved, to act directly on the lens holder. Furthermore, this coupling makes it possible to control the transmission ratio between the toothed portion and the motor output element.
    [0045]
    [0046] According to this proposed embodiment, the helical grooves have a shape - degree of inclination, propeller length - that is determined by certain characteristics of the motor - such as its speed of rotation - and by a transmission ratio between the toothed portion and the motor output element. In this way, the parameters of the different elements can be chosen to ensure that the transition from the first position to the second position is carried out in a certain time.
    [0047]
    [0048] In some embodiments, the support element comprises grooves and the lens element comprises guide elements configured to slide over said grooves, so that the lens-holder element moves in the first direction. In this way, the guiding of the lens holder element in the first direction is ensured. These grooves of the support element and the guide elements of the lens holder element preferably extend in the first direction.
    [0049]
    [0050] In some embodiments, the support element further comprises flanges, preferably flexible for holding the intermediate piece; for this, the intermediate piece it can have an annular projection along its outer surface, or a series of discrete projections, arranged in correspondence with the flanges of the support element, or one or more grooves in which said flanges can be inserted. In this way the position of the lens holder in the lighting device is fixed, with respect to the support element.
    [0051]
    [0052] In some embodiments the lighting device further comprises a detection element for detecting which lens holder element is in the first position where the lens is closest to the light source. This detection element can be a mechanical or electronic component.
    [0053]
    [0054] In some embodiments, the intermediate piece has an annular shape, and the support element and the lens holder element consist of cylindrical support elements, according to the kinematics of the assembly.
    [0055]
    [0056] In some embodiments the light source comprises at least one LED diode; in this way there is more free space to house the motor.
    [0057]
    [0058] In some embodiments, the lighting device further comprises connection means for connecting to an electrical supply source, such as a battery.
    [0059]
    [0060] The different aspects and embodiments of the invention defined in the preceding paragraphs can be combined with each other, as long as they are compatible.
    [0061]
    [0062] Other additional advantages and features of the invention will be apparent from the detailed description that follows and will be particularly pointed out in the appended claims.
    [0063]
    [0064] BRIEF DESCRIPTION OF THE DRAWINGS
    [0065]
    [0066] To complement the description and in order to help a better understanding of the characteristics of the invention, according to an example of practical embodiment thereof, a set of figures is included as an integral part of the description in which, with character illustrative and not limiting, the following has been represented:
    [0067]
    [0068] Figure 1 shows an exploded top perspective view of the lighting device of the invention, with its main elements.
    [0069]
    [0070] Figure 2 shows a bottom perspective view of the lighting device of Figure 1.
    [0071]
    [0072] Figure 1 shows a top perspective view of the lighting device of the invention of Figure 1, with the elements assembled.
    [0073]
    [0074] Figure 4 shows a top perspective view of the lens holder element.
    [0075]
    [0076] Figure 5 shows a bottom perspective view of the lens holder element.
    [0077]
    [0078] DESCRIPTION OF A MODE FOR CARRYING OUT THE INVENTION
    [0079]
    [0080] A possible embodiment of the lighting device of the invention is shown in Figures 1-5.
    [0081]
    [0082] As shown in the exploded view of Figure 1, the lighting device consists of a reading spot or lamp 1, which according to the characteristics that will be described below, provides an adjustable light beam by means of a motorized system.
    [0083]
    [0084] The reading lamp 1 has a light source which in this case is an LED 2; however, combinations of various LEDs are also possible.
    [0085]
    [0086] The LED 2 is mounted on a support element 10 and emits light in an essentially vertical direction 100. In this embodiment the support element 10 is preferably made of plastic material (although it could also be made of metal), and is mounted on a base plate 3, on which other electronic components are also mounted and through which the supply is ensured electric to the reading lamp 1. The reading lamp 1 is placed, inside a motor vehicle, preferably in the roof trim.
    [0087]
    [0088] As can be seen in Figure 1, the support element 10 also has flanges 11, as well as vertical grooves 12, the function of which will be explained later. In the embodiment shown, the support element 10 has four flanges 11 and three vertical grooves 12, flanges and grooves distributed regularly on the periphery of the support element 10. Logically, a different number of flanges and grooves is also possible, as well as a non-regular distribution along the support element 10.
    [0089]
    [0090] The reading lamp 1 of the invention has a motor 20, which as best seen in Figure 2, is mounted on the bottom of the base plate 3 and in this case is fixed to the base plate 3 by means of screws 20a. Other known types of fastening, such as rivets or adhesive, are also possible. Motor 20 can be an electric motor whose output shaft has a pinion 21.
    [0091]
    [0092] The lamp 1 of the invention also has an intermediate piece with an annular or crown shape 30, which in the example shown here is also made of plastic material. The intermediate piece 30 has a toothed portion 31 in its lower part that is configured to mesh with the pinion 21 of the motor 20. In the embodiment shown in the figures, the toothed portion 31 is on the outer surface of the intermediate piece 30, if or there is also the possibility that this toothed portion 31 is on the inner surface of the intermediate piece 30, for which the position of the pinion 21 would be relocated accordingly.
    [0093]
    [0094] On the other hand, the intermediate piece 30 has projections 32 on its inner surface at the top of the intermediate piece 30. In the shown embodiment the intermediate piece 30 has three projections 32 distributed in a regular manner. Likewise, another number of projections and a non-regular distribution is also possible.
    [0095]
    [0096] As can best be seen in Figure 3, the intermediate piece 30 is fixed to the support element 10 by the plastic tabs 11, which catch the intermediate piece 30 by an annular projection 33.
    [0097]
    [0098] The lamp 1 of the present invention also comprises a lens holder part 40, on which one or more lenses 41 are mounted. As shown in Figure 4, the lens holder part 40 has helical grooves on its outer surface 42 , which in the shown embodiment are three helical grooves 42. The lens holder part 40 and the intermediate piece 30 are coupled by placing the projections 32 of the intermediate piece 30 in these helical grooves 42 of the lens holder part 40.
    [0099]
    [0100] The lens-holder part 40 also has vertical guide elements 43 inside it, which are three in the embodiment shown.
    [0101]
    [0102] The operation of the adaptive lamp of the invention is explained below.
    [0103]
    [0104] When the motor 20 is operated for example through an activation button (not shown, but electrically connected to the motor 20, by cable or wirelessly, and the pinion 21 is rotated, this in turn rotates the portion toothed outer 31 of intermediate piece 30 on support member 10. Protrusions 32 of intermediate piece 30 slide into helical grooves 42 of lens-holder part 40, causing this lens-holder part 40 to move in a movement of translation along the vertical direction 100, the vertical guide elements 43 of the lens-holder part 40 being guided in the vertical grooves 12 of the support element 10. This movement of translation of the lens-holder part 40 modifies the distance between the lens 41, or the lenses, if there is more than one, with respect to the LED 2, which has the effect of modifying the beam or cone of illumination of the lamp 1. When the lens 41 is close to the LED 2 , the beam of lighting is wide. When the lens 41 is away from the LED 2, the illumination beam narrows.
    [0105] The shape of the helical grooves 42 (inclination, length) is calculated based on the rotational speed of the motor 20 and the transmission ratio between the pinion 21 of the motor 20 and the toothed portion 31 of the intermediate piece 30, to ensure that - the transition from the wide beam position to the narrow beam position is carried out in a given time.
    [0106]
    [0107] The motor 20 is controlled by an electronic control circuit, the motor being able to rotate in both directions of rotation to raise or lower the lens-holder part 40. In the case of the motor 20 being a stepper motor, a stop element 50 is placed. limit switch, as part of the support element 10, in order to stop the advance of the lens holder 40 beyond its limit position, so that the motor control electronics is able to recognize when the lens 41 is in said limit position, closer to the light source 2. Although a mechanical limit switch detection element has been used in the case shown, it is also possible to implement this detection by means of an electronic or opto-electronic component. In this way, the motor control electronics 20, in addition to detecting the limit position of the lens holder 40, can also count the number of steps to determine the position of the lens 41 with respect to the light source 2.
    [0108]
    [0109] In the case of using another type of motor, the positions closest and furthest from the lens 41 with respect to the light source 2 can be managed by means of mechanical end stops, detecting by increasing the consumption of the motor 20 when the Lens holder piece 40 reaches said stops located at its end of stroke.
    [0110]
    [0111] In this text, the word "includes" and its variants (such as "understanding", etc.) should not be interpreted exclusively, that is, they do not exclude the possibility that what is described includes other elements, steps, etc.
    [0112]
    [0113] On the other hand, the invention is not limited to the specific embodiments that have been described but also includes, for example, the variants that can be made by the average person skilled in the art (for example, regarding the choice of materials, dimensions , components, configuration, etc.), within the meaning of the claims.
    权利要求:
    Claims (12)
    [1]
    1. Lighting device (1) comprising:
    - a support element (10);
    - a light source (2) mounted on the support element (10), the light source (2) emitting a light beam in a first direction (100);
    - a lens holder element (40);
    - at least one lens (41) mounted on the lens-holder element (40); and
    wherein the lighting device (1) further comprises:
    - a motor (20) mounted on the support element (10); and,
    - an intermediate piece (30) to move the lens-holder element (40) along the first direction (100), the intermediate piece (30) having first coupling means for coupling to the lens-holder element (40) , and a second coupling means for coupling to the motor (20);
    - the motor (20) being configured to act on the intermediate part (30) to move the lens-holder element (40) between a first position in which the lens (41) is closer to the light source (2) and a second position in which the lens (41) is further from the light source (2), within the lighting device (1).
    [2]
    Lighting device (1) according to claim 1, in which the first coupling means for coupling to the lens holder element (40) comprise a plurality of projections (32), the lens holder element (40) comprising a plurality of helical grooves (42), each projection (32) being configured to slide in a helical groove (42) of the lens-holder element (40).
    [3]
    Illumination device (1) according to any of claims 1-2, wherein the second coupling means for coupling to the motor (20) comprise a toothed portion (31), configured to engage on an output element (21 ) the motor.
    [4]
    Lighting device (1) according to any of claims 2 and 3, in which the helical grooves (42) have a shape determined by the characteristics of the motor (20) and by a transmission ratio between the toothed portion ( 31) and the output element (21) of the motor.
    [5]
    Lighting device (1) according to any of claims 1-4, in which the support element (10) comprises grooves (12) and the lens-holder element (40) comprises guide elements (43) configured to slide on said grooves (12).
    [6]
    6. Lighting device (1) according to any of claims 1-5, wherein the support element (10) further comprises flanges (11) for clamping the piece. intermediate (30).
    [7]
    Lighting device (1) according to any of claims 1-6, further comprising a detection element (50) to detect which lens-holder element (40) is in the first position in which the lens (41) it is closer to the light source (2).
    [8]
    Lighting device (1) according to any of claims 1-7, in which the intermediate piece (30) has an annular shape, and the support element (10) and the lens-holder element (41) consist of elements cylindrical supports.
    [9]
    9. Lighting device (1) according to any of claims 1-8, in which the intermediate piece (30), the support element (10) and / or the lens-holder element (41) are made of plastic material .
    [10]
    10. Lighting device (1) according to any of claims 1-9, wherein the light source (2) comprises at least one LED diode.
    [11]
    11. Lighting device (1) according to any of claims 1-10, further comprising connection means for connecting to an electrical supply source.
    [12]
    12. Lighting device (1) according to any of claims 1-11, the lighting device (1) being a lamp of a motor vehicle.
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    同族专利:
    公开号 | 公开日
    WO2019053304A1|2019-03-21|
    US20200276932A1|2020-09-03|
    CN111295309A|2020-06-16|
    ES2755173R1|2020-07-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JP2005075316A|2003-09-04|2005-03-24|Toyoda Gosei Co Ltd|Lighting system|
    US7220029B2|2004-02-11|2007-05-22|Federal-Mogul World Wide, Inc.|Lamp assembly having variable focus and directionality|
    TW201038878A|2009-04-21|2010-11-01|ProLight Opto Technology Cooperation|Adjustable condenser seat|
    US20130021801A1|2011-07-18|2013-01-24|Wen-Sung Lee|Helmet light device|
    JP2013045543A|2011-08-23|2013-03-04|Yazaki Corp|Lighting device|
    法律状态:
    2020-04-21| BA2A| Patent application published|Ref document number: 2755173 Country of ref document: ES Kind code of ref document: A2 Effective date: 20200421 |
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    优先权:
    申请号 | 申请日 | 专利标题
    PCT/ES2017/070615|WO2019053304A1|2017-09-15|2017-09-15|Adaptive lighting device|
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