• 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:
    An electromagnetic wave utilization system for a vehicle includes an electromagnetic wave device (100, 201) that sends or/and receives an electromagnetic wave, and a passage part (1, 203) through which passes the electromagnetic wave utilized by the electromagnetic wave device (100, 201). The passage part (1, 203) has a hydrophilic portion (1a, 203a) having hydrophilicity. Accordingly, it is possible to suppress fogging of the passage part (1, 203) through which the electromagnetic wave passes with a simple configuration.
    公开号:FI20205861A1
    申请号:FI20205861
    申请日:2019-01-08
    公开日:2020-09-04
    发明作者:Kotaro Fukuda；Koji Ota；Naoki Yokoyama；Junji Goto；Tatsuhiko Nishino
    申请人:Denso Corp；
    IPC主号:
    专利说明:

    [0001] [0001] This application is based on Japanese Patent Application No. 2018- 40705 filed on March 7, 2018, the disclosure of which is incorporated herein by reference.TECHNICAL FIELD
    [0002] [0002] The present disclosure relates to an electromagnetic wave utilization system that uses electromagnetic waves for a vehicle.BACKGROUND
    [0003] [0003] Conventionally, Patent Literature 1 describes an in-vehicle camera that captures an image of a rear view of a vehicle. In this conventional art, the in- vehicle camera is installed on the ceiling in the vehicle cabin in proximity to the rear window, and captures an image of the outside through the rear window.
    [0004] [0004] In this conventional art, the in-vehicle camera is installed so that a heater wire of the defogger on the rear window is not included in the imaging range of the camera. The defogger is a device that clears fog on the rear window by heating the rear window with the heater wire.PRIOR ART LITERATURE
    [0008] [0008] Further, since it is necessary to control the power supplied to the heater wire, the configuration is complicated.
    [0009] [0009] This issue occurs not only in the in-vehicle camera that captures visible light, but also in various vehicle electromagnetic wave utilization systems that use electromagnetic waves, such as a laser device that transmits and receives laser light for a vehicle.
    [0010] [0010] An object of the present disclosure is to provide an electromagnetic wave utilization system for a vehicle, to suppress fogging of a passage part through which an electromagnetic wave passes with a simple configuration.
    [0011] [0011] In one aspect of the present disclosure, an electromagnetic wave utilization system for a vehicle includes: an electromagnetic wave device that performs at least one of transmission and reception of electromagnetic waves; and a passage part through which passes the electromagnetic wave utilized by the electromagnetic wave device.
    [0012] [0012] Accordingly, it is possible to suppress the fogging of the passage part o through which the electromagnetic wave passes with a simple configuration. a BRIEF DESCRIPTION OF DRAWINGS 3 [0013] x FIG. 1 is a cross-sectional view illustrating a vehicle eguipped with an r imaging device according to a first embodiment. E FIG. 2 is a partially enlarged cross-sectional view illustrating the imaging o device of FIG. 1. 2 FIG. 3 is a cross-sectional view illustrating a laser device according to a O second embodiment.
    [0014] [0014] Hereinafter, embodiments will be described with reference to the drawings. In the following embodiments, identical or equivalent elements are denoted by the same reference numerals as each other in the drawings.
    [0015] [0015] (First embodiment) Hereinafter, an imaging device for a vehicle according to the present embodiment will be described with reference to the drawings. In the drawings, the up, down, front and rear arrows indicate the up, down, front and rear directions of the vehicle. The imaging device corresponds to a vehicular electromagnetic wave utilization system that uses visible light, which is a type of electromagnetic waves.
    [0016] [0016] As shown in FIG. 1, a camera unit 10 is mounted on an inner surface of the windshield 1 of the vehicle in the cabin. The camera unit 10 is attached to the upper portion of the windshield 1 and is located at a substantially central portion in the left-right direction. The camera unit 10 is located near a rear-view mirror (not shown).
    [0017] [0017] As shown in FIG. 2, the camera unit 10 has a camera 100 and a housing
    [0020] [0020] The windshield 1 has a hydrophilic portion 1a. For convenience of illustration, in FIG. 2, the hydrophilic portion 1a is indicated by a thick solid line.
    [0021] [0021] The hydrophilic portion 1a is formed within an area of the inner surface of the windshield 1 in the cabin, and the area is surrounded by the housing 101. In other words, the hydrophilic portion 1a is formed at a portion of the inner surface of the windshield 1, through which visible light captured by the camera 100 passes. The hydrophilic portion 1a is formed by subjecting the windshield 1 to a hydrophilic treatment.
    [0022] [0022] The hydrophilic treatment is, for example, a treatment for applying a polymer to the surface of the windshield 1 or a treatment for forming a fractal on the surface of the windshield 1.
    [0023] [0023] When the hydrophilic portion 1a exhibits hydrophilicity, it is possible to restrict the windshield 1 from fogging even when the windshield 1 has dew condensation.
    [0024] [0024] In other words, since the hydrophilic portion 1a exhibits hydrophilicity, even if the windshield 1 has dew condensation, fine water droplets that diffusely reflect light are not generated, so that the windshield 1 can be restricted from fogging.
    [0027] [0027] In the present embodiment, the imaging device has the housing 101 that houses the camera 100, and the hydrophilic portion 1a is formed on the surface of the windshield 1 adjacent to the camera 100. Thereby, since the hydrophilic portion 1a can be protected from physical contact such as touching by a human hand, the hydrophilicity can be maintained.
    [0028] [0028] (Second Embodiment) In the above-described embodiment, the imaging device for a vehicle includes the hydrophilic portion 1a. In the present embodiment, a laser device 20 for a vehicle includes a hydrophilic portion 203a, and will be described with reference to FIGS 3 and 4.
    [0029] [0029] The laser device 20 irradiates a pulse of laser light, which is a type of electromagnetic waves, and measures distance, direction, attributes, and the like of the target object based on a time period taken until the laser light is reflected by the object and returns back. The laser device 20 is used, for example, as a sensor for automatic driving of the vehicle.
    [0030] [0030] The laser device 20 includes a laser transmitter 201, a housing 202, and a cover 203. The laser transmitter 201 is a device that irradiates a laser beam and detects an object and measures a distance to the object by receiving the laser beam reflected back from the object.
    [0031] [0031] The laser device 20 is mounted on, for example, a bumper (not shown) o of the vehicle. The laser device 20 irradiates the laser light frontward of the vehicle, a and receives the laser light returned from the front of the vehicle. The laser light 2 emitted by the laser device 20 is, for example, a laser light having a near-infrared x wavelength. r [0032] E The operation of the laser transmitter 201 is controlled by an automatic o operation control device 22. The result of detection and the result of 2 measurement by the laser transmitter 201 are input to the automatic operation O control device 22. The automatic operation control device 22 performs automatic operation of the vehicle based on the detection result and the measurement result 5/10 by the laser transmitter 201.
    [0033] [0033] The laser transmitter 201 is housed in a tightly-closed space by the housing 202 and the cover 203. The housing 202 and the cover 203 are members that house the laser transmitter 201 and protect the laser transmitter 201. The housing 202 is arranged in an area through which laser light transmitted and received by the laser transmitter 201 does not pass. The cover 203 is arranged in a region through which the laser light transmitted and received by the laser transmitter 201 passes. The cover 203 is made of resin.
    [0034] [0034] The cover 203 has the hydrophilic portion 203a. For convenience of illustration, in FIG. 3, the hydrophilic portion 203a is indicated by a thick solid line.
    [0035] [0035] The hydrophilic portion 203a is formed on the inner surface of the cover
    [0036] [0036] The hydrophilic treatment is, for example, a treatment for applying a polymer to the surface of the cover 203 or a treatment for forming a fractal on the surface of the cover 203.
    [0037] [0037] When the hydrophilic portion 203a exhibits hydrophilicity, it is possible to restrict the cover 203 from fogging even when the cover 203 has dew condensation.
    [0040] [0040] In the present embodiment, the cover 203 has the hydrophilic portion 203a having hydrophilicity. According to this, it is possible to suppress the fogging on a portion of the cover 203 through which the laser beam used by the laser transmitter 201 passes with a simple configuration.
    [0041] [0041] In the present embodiment, the housing 202 is provided to house the laser transmitter 201, and the hydrophilic portion 203a is formed on the surface of the cover 203 facing the laser transmitter 201. Thereby, since the hydrophilic portion 203a can be protected from physical contact such as touching by a human hand, the hydrophilicity can be maintained.
    [0042] [0042] (Other Embodiments) The above-described embodiments can be appropriately combined with each other. The above-described embodiments can be variously modified as follows, for example.
    [0043] [0043] (1) In the first embodiment, the hydrophilic portion 1a is formed by performing a hydrophilic treatment on the inner surface of the windshield 1 in the vehicle cabin. Alternatively, the hydrophilic portion 1a is provided on the inner surface of the windshield 1 by stacking a hydrophilic member.
    [0044] [0044] The hydrophilic member is a member having a hydrophilic surface. For example, the hydrophilic member is a film-like member having a predetermined thickness.
    [0045] [0045] o In the second embodiment, the hydrophilic portion 203a is formed by a performing hydrophilic treatment on the surface of the cover 203 facing the laser 2 transmitter 201. Alternatively, the hydrophilic portion 203a is formed on the x surface of the cover 203 facing the laser transmitter 201 by stacking a hydrophilic r member. E [0046] o (2) In the first embodiment, the camera unit 10 is arranged on the 2 windshield 1. Alternatively, the camera unit 10 may be arranged on a window O other than the windshield 1, such as a rear glass.
    [0047] [0047] 7110
    [0048] [0048] (4) The camera 100 according to the first embodiment is a camera that captures visible light, but may be a camera that captures infrared light or ultraviolet light.
    [0049] [0049] (5) The laser device 20 of the second embodiment transmits and receives laser light relative to the front of the vehicle, but may transmit and receive laser light to directions other than the front of the vehicle.
    [0050] [0050] For example, laser light may be transmitted and received while rotating the laser transmitter 201 in a horizontal plane. In that case, the housing 202 and the cover 203 may be rotated together with the laser transmitter 201, or the cover 203 may be provided so as to surround the laser transmitter 201 by 360 degrees.
    [0051] [0051] (6) In the second embodiment, the hydrophilic portion 203a is formed on the cover 203 of the laser device 20, but a hydrophilic portion may be formed on a cover of a radio device for a vehicle. The radio device measures a distance, a direction, an attribute, and the like of a target object based on a time period from when a radio wave is emitted and to when the radio wave returns after reflected by an object. The radio device is used as, for example, a sensor for automatic driving of a vehicle.
    [0052] [0052] o In this case, the hydrophilic portion 203a restricts the cover of the radio a device from fogging, not to affect the radio wave by moisture in the fogging. 3 [0053] 3 (7) In the above embodiments, the imaging device and the laser device r for a vehicle are described as specific examples of the electromagnetic wave E utilization system. Alternatively, the electromagnetic wave utilization system may o be a stationary imaging device, a stationary laser device, or the like.
    N 8/10
    权利要求:
    Claims (2)
    [1] 1. An electromagnetic wave utilization system for a vehicle comprising: an electromagnetic wave device (100, 201) configured to send or/and receive an electromagnetic wave while rotating in a horizontal plane; and a passage part (1, 203) through which passes the electromagnetic wave utilized by the electromagnetic wave device, wherein the passage part has a hydrophilic portion (1a, 203a) having hydrophilicity, and the passage part and the hydrophilic portion are configured to rotate together with the electromagnetic wave device, or surround the electromagnetic wave device by 360 degrees in a horizontal direction.
    [2] 2. The electromagnetic wave utilization system according to claim 1, further comprising: a housing (101, 202) that houses the electromagnetic wave device, wherein the hydrophilic portion is formed on a surface of the passage part facing the electromagnetic wave device.
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JP2002341432A|2001-05-16|2002-11-27|Murakami Corp|Imaging device|
    JP2002350966A|2001-05-25|2002-12-04|Hitachi Building Systems Co Ltd|Burglar prevention camera|
    JP2003078788A|2001-08-31|2003-03-14|Hitachi Kokusai Electric Inc|Outdoor use television camera|
    EP3425999A1|2012-03-05|2019-01-09|Saint-Gobain Glass France|Disc assembly with electrically heated light scattering aperture|
    JP2013218114A|2012-04-09|2013-10-24|Panasonic Corp|Camera cover and camera|
    JPWO2015104903A1|2014-01-10|2017-03-23|アスモ株式会社|Transmission shield device, camera device, and transmission sticker|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP2018040705A|JP2019155947A|2018-03-07|2018-03-07|Vehicular electromagnetic wave use system|
    PCT/JP2019/000182|WO2019171746A1|2018-03-07|2019-01-08|Electromagnetic wave utilization system for vehicle|
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