• 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 to be mounted on a vehicle comprises a light source (14); a sensor (15) configured to acquire information outside the vehicle based on invisible light; and a cover (12) comprising a first portion (121) covering the light source (14) and a second portion (122) covering the sensor (15). The second portion (122) has a lower visible light transmission capacity than the first portion (121).
    公开号:FR3055042A1
    申请号:FR1757651
    申请日:2017-08-11
    公开日:2018-02-16
    发明作者:Yusuke Kasaba；Takashi Hori；Teruaki Yamamoto
    申请人:Koito Manufacturing Co Ltd；
    IPC主号:
    专利说明:

    ® FRENCH REPUBLIC
    NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number: 3,055,042 (to be used only for reproduction orders) © National registration number: 17 57651
    COURBEVOIE © Int Cl 8 : F21 V9 / 00 (2017.01), G 01 S 17/02
    A1 PATENT APPLICATION
    ©) Date of filing: 11.08.17.© Priority: 12.08.16 JP 2016158727. © Applicant (s): KOITO MANUFACTURING CO., LTD. - JP. ©) Date of public availability of the request: 16.02.18 Bulletin 18/07. @ Inventor (s): KASABA YUSUKE, HORI TAKASHI and YAMAMOTO TERUAKI. ©) List of documents cited in the preliminary search report: The latter was not established on the date of publication of the request. (© References to other related national documents: ® Holder (s): KOITO MANUFACTURING CO., LTD .. ©) Extension request (s): © Agent (s): CABINET BEAU DE LOMENIE. © LIGHTING DEVICE.
    123
    FR 3 055 042 - A1 yV) A lighting device to be mounted on a vehicle comprises a light source (14); a sensor (15) configured to acquire information outside the vehicle based on invisible light; and a cover (12) comprising a first part (121) covering the light source (14) and a second part (122) covering the sensor (15). The second part (122) has a lower visible light transmission capacity than the first part (121).
    BACK
    The present invention relates to a lighting device mounted on a vehicle.
    In order to achieve a technique for automatically driving a vehicle, it is necessary to mount on a vehicle body a sensor intended to acquire information outside the vehicle. LiDAR, for “Light Detection and Ranging” in English, or “Detection and Localization by Light” in French, is known as an example of such a sensor (see for example patent document 1). The LiDAR sensor is a device intended to emit invisible light and to acquire information on the distance to an object or the attribute of an object on the basis of the reflected light.
    Patent document 1: Japanese patent publication subject to public inspection No. 2010-185769 [0004] From the point of view of the effective acquisition of information around the vehicle and from the point of view of design , it is desirable to have the sensor described above in a headlight chamber of the lighting device arranged at the four corners of the vehicle. However, it is generally the case that the sensor intended to acquire information outside the vehicle on the basis of invisible light has a relatively large volume. The lighting device thus tends to be large.
    Illustrative embodiments of the invention provide a lighting device which can suppress an increase in the size of the lighting device while providing a sensor for acquiring information outside of the device. 'a vehicle based on invisible light.
    A lighting device to be mounted on a vehicle, according to an example embodiment, comprises:
    a light source;
    a sensor configured to acquire information outside the vehicle based on invisible light; and a cover comprising a first part covering the light source and a second part covering the sensor, in which the second part has a lower visible light transmission capacity than the first part.
    According to this configuration, the second part of the cover can function as a filter. More specifically, among lights other than infrared light used by the sensor, in particular, the transmission of visible light can be suppressed. Such a filter is generally provided in the sensor itself in order to reduce the influence of ambient light on the detection result. However, according to the above configuration, part of the cover covering the light source and the sensor has such a filter function, and therefore a structure related to the filter function can be omitted from the sensor. That is, the sensor can be reduced in size. In this way, it is possible to suppress an increase in the size of the lighting device while providing the sensor intended to acquire information outside the vehicle on the basis of invisible light.
    Furthermore, the second part of the cover has a lower visible light transmission capacity than the first part and therefore has a gray or black appearance. Thus, it is possible to make the sensor covered by the cover less visible from the outside of the cover. As a result, it is possible not only to suppress the deterioration in market value from the design point of view but also to provide a new appearance in which part of the cover is opaque.
    The lighting device described above can be configured as follows.
    The sensor can be installed on the hood.
    According to this configuration, the function of a filter provided on a detection surface of a LiDAR sensor is fulfilled by the second part of the cover, and thus, the detection surface of the sensor can be made as close as possible to the hood. Compared to the configuration in which the sensor is placed away from the cover, the area of the second part necessary to ensure the equivalent detection range can be reduced. That is, it is possible to minimize the design change required of the cover by incorporating the sensor. In addition, since it is easy to avoid interference between a detection range and another component disposed in the headlight chamber covered by the cover, the degree of freedom in the arrangement of the respective components in the headlight chamber which is limited space is improved. The lighting device described above can be configured as follows.
    The first part and the second part can be molded in one piece.
    That is to say that the first part and the second part having different colors can be formed by molding in two colors. Compared to the configuration in which the cover is formed by combining the first part and the second part provided as separate elements, an increase in the cost of manufacturing can be eliminated by reducing the time of assembly labor.
    The sensor can be a LiDAR sensor.
    The lighting device described above can be configured as follows.
    The cover may include a third part arranged to face a front-rear direction of the vehicle and a fourth part arranged to face a left-right direction of the vehicle, and the second part may be at a part d lateral end of the fourth part remote from the third part.
    In addition or alternatively, the second part can be located at a lateral end part of the third part remote from the fourth part.
    In addition or alternatively, the second part can be located at an upper end part of the third part.
    Figure 1 is a view schematically showing a position of a lighting device according to an embodiment in a vehicle.
    FIG. 2 is a view schematically showing a configuration of the lighting device shown in FIG. 1.
    FIG. 3 is a view showing a modification of the lighting device shown in FIG. 1.
    FIGS. 4A to 4C are views showing a modification of the lighting device shown in FIG. 1.
    An example of an embodiment according to the present invention will be described in detail below with reference to the accompanying drawings. In each drawing used in the following description, the scale is changed appropriately in order to bring each element to have a recognizable size.
    In the accompanying drawings, the arrow AV indicates a front direction of a structure shown, the arrow AR indicates a rear direction of a structure shown, the arrow H indicates an upward direction of a structure shown, the arrow B indicates a downward direction of a structure shown, arrow G indicates a left direction of a structure shown, and arrow D indicates a right direction of a structure shown. The terms "left" and "right" used in the following description indicate the left-right directions as viewed from a driver's seat. As shown in Figure 1, a left front lighting device 1LF according to one embodiment is mounted on a left front corner portion of a vehicle 2, and a right front lighting device 1RF according to one embodiment is mounted on a right front corner part of the vehicle 2.
    Figure 2 schematically shows a configuration of the right front lighting device 1RF. Although not shown, the left front lighting device 1LF has a configuration which is bilaterally symmetrical with the right front lighting device 1RF.
    The right front lighting device 1RF comprises a housing 11 and a translucent cover 12. The housing 11 and the translucent cover 12 define a headlight chamber
    13.
    The right front lighting device 1RF comprises a light source 14. The light source 14 comprises an optical system having at least one of a lens and an element diode a reflector, and emits light to illuminate a predetermined area. The light source 14 is disposed inside the headlight chamber 13. For the light source 14, a lamp light source or a semiconductor light emitting element can be used. Examples of the lamp light source may include an incandescent lamp, a halogen lamp, a discharge lamp, and a neon lamp and the like. Examples of the semiconductor light emitting element may include electroluminescent, a laser diode, and organic light emitting and the like.
    The right front lighting device 1RF comprises a LiDAR sensor 15. The LiDAR sensor 15 has a configuration for the emission of invisible light and a configuration for the detection of return light as a result of invisible light which reflected by an existing object outside the vehicle 2. The LiDAR sensor 15 includes a scanning mechanism which scans the invisible light by changing the emission direction (i.e. the direction of detection) as is necessary. In the present embodiment, infrared light with a wavelength of 905 nanometers is used as invisible light.
    The LiDAR sensor 15 is a sensor intended to acquire information outside the vehicle 2. For example, on the basis of time from the moment of emission of the infrared light in a certain direction up to at the moment of detection of the return light, it is possible to acquire a distance to an object associated with the return light. In addition, it is possible to acquire information on the shape of an object associated with the return light by accumulating this distance data in association with the detection position. In addition or alternatively, based on the difference between the wavelengths of the emitted light and the return light, it is possible to acquire information on attributes such as the material of an object. associated with the return light. Additionally or alternatively, for example, based on the difference in reflectivity of the return light from a road surface, it is possible to acquire color information (such as a white line on the road surface) of an object.
    The LiDAR sensor 15 delivers a signal corresponding to the attribute (intensity, wavelength, etc.) of the detected return light. The above information is acquired by appropriately processing the signal delivered by the LiDAR sensor 15 using an information processing unit (not shown). The information processing unit can be provided in the right front lighting device 1RF or can be mounted on the vehicle 2.
    The translucent cover 12 has a first part 121 and a second part 122. The first part 121 is provided so as to cover at least the light source 14. More specifically, the first part 121 is provided so as to cover the minus an irradiation range (solid angle) of the light emitted by the light source 14. The second part 122 is provided so as to cover at least the LiDAR sensor 15. More particularly, the second part 122 is provided so as to cover at least one detection range (solid angle) of the LiDAR 15 sensor.
    The light emitted by the light source 14 passes through the first part 121 of the translucent cover 12 and illuminates a predetermined area outside the vehicle 2. At least part of the wavelength of the light emitted by the light source 14 is included in the visible light area.
    The infrared light emitted by the LiDAR sensor 15 passes through the second part 122 of the translucent cover 12 and illuminates a predetermined area outside the vehicle 2. A range S indicated by a dotted line in FIG. 2 represents a range that can be (detected). The return light due to the fact that it through the irradiated object passes through the second part 122 and is detected by the LiDAR sensor in the irradiated is reflected
    15.
    On the other hand, the transmission capacity of visible light in the second part 122 is less than the transmission capacity of visible light in the first part 121. That is to say that the second part 122 has a wavelength selectivity for the passage of at least the wavelength of the infrared light emitted by the LiDAR sensor 15 and the wavelength of the return light detected by the LiDAR sensor 15.
    According to this configuration, the second part 122 of the translucent cover 12 can function as a filter. More specifically, among the lights other than the infrared light used by the LiDAR sensor 15, in particular, the transmission of visible light can be suppressed. Here, "suppression" means understanding the case of not allowing (zero transmission capacity) the transmission of visible light. Such a filter is generally provided in the sensor itself in order to reduce the influence of ambient light on the detection result. On the other hand, in the present embodiment, part of the translucent cover 12 which defines the headlight chamber 13 has such a filter function. Therefore, a structure related to the filter function can be omitted from the sensor
    LiDAR 15. This means that the LiDAR 15 sensor can be reduced in size. In this way, it is possible to suppress an increase in the size of the right front lighting device 1RF while providing the LiDAR sensor 15 intended to acquire information outside the vehicle 2 on the basis of invisible light. .
    Furthermore, the second part 122 of the translucent cover 12 has a lower visible light transmission capacity than the first part 121 and therefore has a gray or black appearance. Thus, it is possible to make the LiDAR sensor 15 disposed in the headlight chamber 13 less visible from the outside of the headlight chamber 13. As a result, it is possible not only to suppress the degradation of the market value of the from a design point of view but also to provide a new aspect in which a part of the translucent cover 12 is opaque.
    In this embodiment, the first part 121 and the second part 122 of the translucent cover 12 are molded in one piece.
    That is to say that the first part 121 and the second part 122 having different colors can be formed by molding in two colors. Compared to the configuration in which the translucent cover 12 is formed by combining the first part 121 and the second part 122 provided as separate elements, an increase in the manufacturing cost can be eliminated by reducing the labor time d 'assembly.
    Figure 3 schematically shows a configuration of a right front lighting device 10RF according to a modification. The constituent elements which are the same as or equivalent to the right front lighting device 1RF described above are designated by the same references, and repetitive explanations are omitted.
    The right front lighting device 10RF comprises a LiDAR 15A sensor. The LiDAR sensor 15A is installed on the second part 122 of the translucent cover 12. Installation means can be chosen as appropriate. Since the function of a filter provided on a detection surface of the LiDAR sensor is fulfilled by the second part 122 of the translucent cover 12, the detection surface of the LiDAR sensor 15 can be made as close as possible to the translucent cover 12 The detection surface and the second part 122 may be in close contact with each other, or an interval may be present between the detection surface and the second part 122.
    Compared to the position indicated by a dotted line of the LiDAR sensor 15 shown in Figure 2, we can see that the surface of the second part 122 necessary to ensure a detection range SA equivalent to the detection range S can be reduced. That is to say, by placing the LiDAR sensor 15A in the headlight chamber 13, it is possible to minimize the design change required of the translucent cover 12. [0040] In addition, compared to the position indicated by a dashed line of the LiDAR sensor 15 represented in FIG. 2, it can be seen that it is easy to avoid interference between the detection range SA and another device (the light source 14 in the example illustrated) arranged in the headlight chamber 13. That is, the degree of freedom in the arrangement of the respective components in the headlight chamber 13 which is a limited space is improved.
    The above embodiment is simply an example intended to facilitate understanding of the present invention. The configuration according to the above embodiment can be appropriately changed and improved without departing from the essence of the present invention. In addition, it is obvious that equivalents fall within the technical scope of the present invention.
    In the above embodiment, the first part 121 and the second part 122 of the translucent cover 12 are molded in one piece. However, the translucent cover 12 can be formed by integrating the first part 121 and the second part 122 provided as elements separated by adhesion, welding, or mounting or the like.
    As shown in Figure 2, the translucent cover 12 has a third portion 123 arranged to face a front-rear direction of the vehicle 2 and a fourth portion 124 arranged to face a left-right direction of the vehicle 2. As shown in FIG. 4A, in the above embodiment, the second part 122 is located at a side end part (i.e. an end part side of the translucent hood 12 which is on the outside in a vehicle width direction of the vehicle 2) of the fourth part 124 distant from the third part 123.
    However, the position of the second part 122 can be changed appropriately depending on the characteristic of the LiDAR sensor 15 or the object to be detected. For example, as shown in FIG. 4B, the second part 122 can be located at a side end part (that is to say a side end part of the translucent cover 12 which is located on the inner side in the vehicle width direction of the vehicle 2) of the third part 123 remote from the fourth part 124. As a variant, as shown in FIG. 4C, the second part 122 can be located at an upper end portion of the third portion 123. The respective configurations shown in Figures 4A to 4C can be combined as appropriate.
    In the above embodiment, the LiDAR sensor is used as the sensor intended to acquire information outside the vehicle 2. However, the sensor to be used can also be chosen appropriately depending on of the type of information to be acquired, as long as it is based on invisible light. For example, an infrared camera can be adopted.
    In the above embodiment, the left front lighting device 1LF and the right front lighting device 1RF have been described as an example of the lighting device comprising the LiDAR sensor 15. However, the configuration described with reference to the right front lighting device 1RF can be applied to a left rear lighting device 1LB arranged on a rear left corner of the vehicle 2 shown in FIG. 1 and a right rear lighting device 1RB arranged on a right rear corner of vehicle 2. For example, the right rear lighting device 1RB has a configuration which is longitudinally symmetrical with the right front lighting device 1RF (the light source is appropriately changed). The left rear lighting device 1LB has a configuration which is bilaterally symmetrical with the right rear lighting device 1RB.
    权利要求:
    Claims (7)
    [1" id="c-fr-0001]
    1. Lighting device configured to be mounted on a vehicle, characterized in that it comprises:
    a light source (14);
    a sensor (15; 15A) configured to acquire information outside the vehicle based on invisible light; and a cover (12) comprising a first part (121) covering the light source (14) and a second part (122) covering the sensor (15; 15A), in which the second part (122) has a transmission capacity weaker visible light than the first part (121).
    [2" id="c-fr-0002]
    2. Lighting device according to claim 1, in which the sensor (15; 15A) is installed on the cover (12).
    [3" id="c-fr-0003]
    3. Lighting device according to claim 1 or 2, wherein the first part (121) and the second part (122) are molded in one piece.
    [4" id="c-fr-0004]
    4. Lighting device according to any one of claims 1 to 3, wherein the sensor (15; 15A) is a LiDAR sensor.
    [5" id="c-fr-0005]
    5. Lighting device according to any one of claims 1 to 4, in which the cover (12) comprises a third part (123) arranged to face a front-rear direction of the vehicle and a fourth part (124) arranged to face a left-to-right direction of the vehicle, and the second part (122) is located at a lateral end part of the fourth part (124) remote from the third part (123).
    [6" id="c-fr-0006]
    6. Lighting device according to any one of claims 1 to 4, in which the cover (12) comprises a third part (123) arranged to face a front-rear direction of the vehicle and a fourth part (124) arranged to face a left-to-right direction of the vehicle, and the second part (122) is located at a lateral end part of the third part (123) remote from the fourth part (124).
    [7" id="c-fr-0007]
    7. Lighting device according to any one of claims 1 to 4, in which the cover (12) comprises a third part (123) arranged to face a front-rear direction of the vehicle and a fourth part (124) arranged to face a left-to-right direction of the vehicle, and the second part (122) is located at an upper end part of the third part (123).
    1/4
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    同族专利:
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    JP6786302B2|2020-11-18|
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    US20180045826A1|2018-02-15|
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    引用文献:
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    FR3100870A1|2019-09-16|2021-03-19|Valeo Vision|Lighting device of a vehicle|DE60331720D1|2002-01-11|2010-04-29|Nippon Sheet Glass Co Ltd|COMPOSITE GLASS FOR USE IN VEHICLES AND MANUFACTURING METHOD THEREFOR|
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    JP5405525B2|2011-06-07|2014-02-05|株式会社シマノ|lamp|
    JP2013164913A|2012-02-09|2013-08-22|Koito Mfg Co Ltd|Vehicle lamp|
    JP5723417B2|2013-06-26|2015-05-27|富士重工業株式会社|Vehicle headlamp|
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    法律状态:
    2018-07-13| PLFP| Fee payment|Year of fee payment: 2 |
    2019-07-11| PLFP| Fee payment|Year of fee payment: 3 |
    2020-06-25| PLFP| Fee payment|Year of fee payment: 4 |
    2021-07-15| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2016158727A|JP6786302B2|2016-08-12|2016-08-12|Lighting device|
    JP2016158727|2016-08-12|
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