WO2021199244A1 - Light control device for vehicle and light control method - Google Patents

Light control device for vehicle and light control method Download PDF

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Publication number
WO2021199244A1
WO2021199244A1 PCT/JP2020/014751 JP2020014751W WO2021199244A1 WO 2021199244 A1 WO2021199244 A1 WO 2021199244A1 JP 2020014751 W JP2020014751 W JP 2020014751W WO 2021199244 A1 WO2021199244 A1 WO 2021199244A1
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WIPO (PCT)
Prior art keywords
vehicle
line
sight
transmittance
directed
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PCT/JP2020/014751
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French (fr)
Japanese (ja)
Inventor
夏幸 香田
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三菱電機株式会社
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2022512968A priority Critical patent/JP7237243B2/en
Priority to PCT/JP2020/014751 priority patent/WO2021199244A1/en
Publication of WO2021199244A1 publication Critical patent/WO2021199244A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J3/00—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles
    • B60J3/04—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles adjustable in transparency

Definitions

  • the present invention relates to a vehicle dimming device that controls the light transmittance of a vehicle window glass.
  • Patent Document 1 discloses a method of automatically controlling the transmittance of a window glass according to a stop position when it is detected that a vehicle has stopped at a pre-registered point such as a station.
  • the purpose of this disclosure is to prevent peeping inside the vehicle, suppress the restriction of incident light into the vehicle by unnecessary transmittance control, and improve the comfort of the occupants.
  • the vehicle dimming device has a line-of-sight detection unit that acquires an image captured by an image pickup device that captures the surroundings of the own vehicle and detects the direction of the line of sight of a person around the own vehicle, and a line-of-sight detection unit that detects the direction of the line of sight in advance.
  • a line-of-sight target determination unit that determines whether or not the vehicle is directed to the own vehicle for a predetermined time or longer, and a line-of-sight target determination unit that is arranged in the window of the own vehicle when the direction of the line of sight is directed to the own vehicle for a predetermined time or longer. It is provided with a transmittance control unit for reducing the transmittance of the dimming member.
  • the vehicle dimming device of the present disclosure can prevent peeping inside the vehicle, suppress the restriction of incident light into the vehicle by unnecessary transmittance control, and improve the comfort of the occupant.
  • FIG. 1 is a diagram showing a vehicle 1 according to the first embodiment.
  • the vehicle 1 is provided with a windshield 10a, a front door glass 10b, 10c, a rear glass 20a, and a rear door glass 20b, 20c, and a voltage is applied to each glass to increase the light transmittance.
  • a changeable dimming member is arranged.
  • the dimming member may be in the form of a film, or may be integrally formed with each glass as a dimming glass.
  • FIG. 2 is an example when the dimming member is arranged on the rear glass 20a.
  • FIG. 2 shows a situation in which the transmittance of the dimming member 30c is lowered.
  • the dimming members 30a, 30b, and 30c are arranged so as to divide the rear glass 20a into three parts.
  • One dimming member may be arranged on the entire surface of the rear glass 20a, but the transmittance can be controlled for each area by arranging the dimming member in a plurality of regions as shown in FIG. It becomes.
  • the dimming member is arranged in three divisions as an example, and the number of divisions may be two divisions, three divisions or more, may be arranged in a matrix, or may be arranged only in a part of the rear glass. You may.
  • the dimming members are arranged in the arrangement described above for the front door glasses 10b and 10c and the rear door glasses 20b and 20c.
  • the dimming member is arranged only in a region that does not obstruct the driver's field of vision.
  • FIG. 3 is a block diagram showing the configuration of the vehicle privacy protection system 100 according to the present embodiment.
  • the vehicle privacy protection system 100 includes a vehicle dimming device 40, an external camera 50, and the vehicle exterior camera 50. It includes an illuminance detection unit 51, an occupant position detection unit 52, and a notification unit 53.
  • the vehicle dimming device 40 includes a line-of-sight detection unit 41, a line-of-sight target determination unit 42, and a transmittance control unit 43.
  • the vehicle dimming device 40 is connected to an external camera 50, an illuminance detection unit 51, an occupant position detection unit 52, and a notification unit 53.
  • the vehicle exterior camera 50 is provided on the outside of the vehicle 1 and images the surroundings of the vehicle 1.
  • the vehicle exterior camera 50 is, for example, a visible light camera.
  • the illuminance detection unit 51 is a sensor that detects the illuminance around the vehicle 1 and is provided in the vicinity of the dimming member. When a plurality of dimming members are provided in the vehicle 1, the illuminance detecting unit 51 may be provided for each dimming member.
  • the illuminance detection unit 51 transmits the detected illuminance to the line-of-sight target determination unit 42.
  • the occupant position detection unit 52 detects in which seat the occupant of the vehicle 1 is located. The position of the occupant may be detected based on the image captured by the occupant image pickup device that images the occupant in the vehicle, or may be detected from the information of the seating sensor provided on the seat of the vehicle 1.
  • the line-of-sight detection unit 41 detects the direction of the line of sight of a person existing around the vehicle 1 from the image around the vehicle captured by the external camera 50.
  • the detection of the direction of the line of sight is based on, for example, detecting facial feature points that are components of the face such as eyes, nose, and mouth from the image around the vehicle captured by the external camera 50, and based on the positional relationship of the facial feature points. Or it may be calculated from the rotation angle of the eyeball by detecting the eyeball.
  • the line-of-sight detection unit 41 calculates the distance to the person who is detecting the line of sight. For example, the line-of-sight detection unit 41 prepares a correspondence table of the distance from the vehicle 1 and the size of the face in the storage unit (not shown) in advance, and the size of the face detected from the image around the vehicle captured by the external camera 50. Calculate the distance from it.
  • the line-of-sight detection unit 41 detects the time change of the distance to the person detecting the line-of-sight calculated above, and calculates the relative speed with the person detecting the line-of-sight.
  • the line-of-sight detection unit 41 acquires the relative speed from the image captured by the camera outside the vehicle.
  • any configuration can be used as long as the relative speed can be measured, for example, a millimeter wave radar or the like. The distance measurement technique using the above may be applied.
  • the line-of-sight detection unit 41 transmits information on the direction of the line of sight, the distance to the person who is directing the line of sight, and the relative speed with the person who is directing the line of sight to the line-of-sight target determination unit 42.
  • the line-of-sight target determination unit 42 determines whether the direction of the line of sight detected by the line-of-sight detection unit 41 is directed toward the vehicle 1 for a predetermined time or longer.
  • the line-of-sight target determination unit 42 may determine which window glass of the vehicle 1 the line of sight is directed to. Further, the predetermined time is, for example, 3 seconds, and a time is set so that it is not determined that the vehicle 1 is visually recognized only by accidentally directing the line of sight to the vehicle 1.
  • the line-of-sight target determination unit 42 transmits, as a result of determining whether or not the line of sight is directed, information on the distance to the person who is directing the line of sight and the relative speed with the person who is directing the line of sight to the transmittance control unit 43.
  • the transmittance control unit 43 includes a power supply unit that individually outputs a driving voltage to the dimming member arranged on each window glass, and is composed of an arithmetic processing unit that controls the power supply unit.
  • the transmittance control unit 43 determines that the transmittance of the dimming member is high. To reduce.
  • the transmission rate control unit 42 directs the line of sight of a person around the vehicle. The transmission rate is reduced only for the window glass that is used.
  • the line-of-sight target determination unit 42 determines which window glass of the vehicle 1 the line of sight of a person around the vehicle is directed to, the line-of-sight target determination unit 42 is based on the occupant position acquired by the occupant position detection unit 52. Determines if the occupant is in a position visible through the window in which the line of sight is directed, and reduces the transparency of the window in which the line of sight is directed when the occupant is in a position visible from the window in which the line of sight is directed. You may do so.
  • the degree of reduction in the transmittance of the dimming member may be constant at all times, but is based on at least one of the illuminance around the vehicle, the distance to the person looking at the vehicle, and the relative speed to the person looking at the person.
  • the reduction rate of the transmittance for each illuminance may be set in advance or may be arbitrarily set by the occupant. When the vehicle does not have an illuminance sensor, it may be changed according to the time, such as increasing the reduction rate of the transmittance of the dimming member in the daytime and decreasing the reduction rate of the transmittance at night.
  • the reduction rate of the transmittance for each distance may be set in advance, or may be arbitrarily set by the occupant.
  • the line-of-sight target determination unit 42 determines that a person present around the vehicle is directing the line of sight to the vehicle 1
  • the line-of-sight target determination unit 43 directs the line of sight of the person present around the vehicle to the vehicle 1 to the occupant of the vehicle 1.
  • the notification method display on the display unit of the navigation device of the vehicle, output by voice, etc. can be considered.
  • FIG. 4 is an example of the notification according to the first embodiment, and the notification unit 53 may give a notification that the occupant of the vehicle can select whether or not to reduce the transmittance of the window as shown in FIG.
  • the transmittance control unit 42 controls to reduce the transmittance when the occupant of the vehicle chooses to reduce the transmittance of the dimming member.
  • FIG. 5A and 5B are diagrams showing a hardware configuration example of the vehicle dimming device 40.
  • Each function of the line-of-sight detection unit 41, the line-of-sight target determination unit 42, and the transmittance control unit 43 in the vehicle dimming device 40 is realized by a processing circuit. That is, the vehicle dimming device 40 includes a processing circuit for realizing each of the above functions.
  • the processing circuit may be a processing circuit 200a which is dedicated hardware as shown in FIG. 5A, or may be a processor 200b which executes a program stored in the memory 200c as shown in FIG. 5B. good.
  • the processing circuit 200a is, for example, a single circuit, a composite circuit, or a programmed processor. , A parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-programmable Gate Array), or a combination thereof.
  • the functions of the line-of-sight detection unit 41, the line-of-sight target determination unit 42, and the transmittance control unit 43 may be realized by processing circuits, or the functions of each part may be collectively realized by one processing circuit.
  • the line-of-sight detection unit 41, the line-of-sight target determination unit 42, and the transmittance control unit 43 are processors 200b, the functions of each unit are realized by software, firmware, or a combination of software and firmware. ..
  • the software or firmware is written as a program and stored in the memory 200c.
  • the processor 200b realizes each function of the line-of-sight detection unit 41, the line-of-sight target determination unit 42, and the transmittance control unit 43 by reading and executing the program stored in the memory 200c. That is, the line-of-sight detection unit 41, the line-of-sight target determination unit 42, and the transmittance control unit 43 store a program in which each step shown in FIG.
  • the processor 200b is, for example, a CPU (Central Processing Unit), a processing device, an arithmetic unit, a processor, a microprocessor, a microcomputer, a DSP (Digital Signal Processor), or the like.
  • the memory 200c may be, for example, a non-volatile or volatile semiconductor memory such as a RAM (Random Access Memory), a ROM (Read Only Memory), a flash memory, an EPROM (Erasable Program ROM), or an EPROM (Electrically EPROM).
  • a magnetic disk such as a hard disk or a flexible disk, or an optical disk such as a mini disk, a CD (Compact Disc), or a DVD (Digital Versaille Disc).
  • the line-of-sight detection unit 41 the line-of-sight target determination unit 42, and the transmittance control unit 43 may be realized by dedicated hardware and partly by software or firmware.
  • the processing circuit 200a in the vehicle dimmer 40 can realize each of the above-mentioned functions by hardware, software, firmware, or a combination thereof.
  • FIG. 6 is a flowchart showing the operation of the vehicle dimming device 40 according to the first embodiment of the present disclosure.
  • the line-of-sight detection unit 41 acquires an image captured by an external camera 50 provided on the outside of the vehicle 1 (ST1), and detects the direction of the line of sight of a person existing around the vehicle 1 (ST2).
  • the line-of-sight target determination unit 42 determines whether or not the direction of the line of sight of a person around the vehicle detected by the line-of-sight detection unit 40 is directed toward the vehicle 1 for a predetermined time or longer (ST3).
  • the transmission control unit 43 is provided in the window of the vehicle 1.
  • the transmittance of the dimming member is reduced (ST4).
  • the line-of-sight target determination unit 41 determines that the direction of the line of sight of a person around the vehicle is not directed toward the vehicle 1 for a predetermined time or longer (ST3: NO)
  • the process returns to ST1.
  • the line-of-sight detection unit that acquires the image captured by the image pickup device that captures the surroundings of the own vehicle and detects the direction of the line of sight of a person around the own vehicle, and the direction of the line of sight. Is placed in the window of the own vehicle when the line-of-sight target determination unit determines whether or not the light is directed toward the own vehicle for a predetermined time or longer and when the direction of the line of sight is directed toward the own vehicle for a predetermined time or longer. Since it is configured to have a transmittance control unit that reduces the transmittance of the dimming member, it prevents peeping inside the vehicle and suppresses the restriction of incident light into the vehicle due to unnecessary transmittance control. Comfort can be improved.
  • the line-of-sight target determination unit 42 determines which window glass of the vehicle 1 the line of sight is directed to, it is necessary to prevent the line-of-sight target determination unit 42 from looking only at the window glass seen by people around both sides. Therefore, it is possible to prevent the inside of the vehicle from becoming too dark while protecting the privacy of the occupants in the vehicle. In addition, it is possible to suppress power consumption as compared with reducing the transmittance of the dimming member of all windows.
  • the degree of reduction of the transmittance of the dimming member based on at least one of the illuminance around the vehicle, the distance to the person who is looking at the vehicle, and the relative speed to the person who is looking at the vehicle. , It is possible to change the transmittance appropriately, and it is possible to improve the comfort of the occupants.
  • Vehicle with privacy protection system for vehicles 10 Windshield 10a Windshield, 10b Right front door glass, 10c Left front door glass 20a Rear glass, 20b Right rear door glass, 20c Left rear door glass 30a, 30b, 30c Dimming member 40 Vehicles Dimming device, 41 line-of-sight detection unit, 42 line-of-sight target determination unit 43 transmission rate control unit, 50 External camera, 51 Illuminance detection unit, 52 Crew position detection unit, 53 Notification unit 200a processing circuit, 200b processor, 200c memory

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

The present invention comprises: a line-of-sight detection unit (41) for acquiring an image captured by an imaging device that captures an image around an own vehicle, and detecting the direction of a line of sight of a person around the own vehicle; a line-of-sight target determination unit (42) for determining whether the direction of the line of sight is directed to the own vehicle for more than or equal to a predetermined period of time; and a transmittance control unit (43) for, if the direction of the line of sight is directed to the own vehicle for more than or equal to the predetermined period of time, reducing the transmittance of a light control member placed on a window of the own vehicle.

Description

車両用調光装置および調光方法Vehicle dimming device and dimming method
　本発明は、車両の窓ガラスの光透過率制御を行う車両用調光装置に関するものである。 The present invention relates to a vehicle dimming device that controls the light transmittance of a vehicle window glass.
　従来から、移動体の窓ガラス等に透過率制御可能な調光部材を取り付け、必要に応じて透過率を制御する技術が提案されている。例えば、特許文献１には、駅等の予め登録された地点に車両が停車したことを検知すると、停車位置に応じで窓ガラスの透過率を自動制御する方法が開示されている。 Conventionally, a technique has been proposed in which a dimming member capable of controlling the transmittance is attached to a window glass or the like of a moving body, and the transmittance is controlled as needed. For example, Patent Document 1 discloses a method of automatically controlling the transmittance of a window glass according to a stop position when it is detected that a vehicle has stopped at a pre-registered point such as a station.
特開２０１９－６４３７６号公報JP-A-2019-64376
　上記特許文献１の方法では、例えば、人の視線が向けられておらずプライバシー保護が不要な場合であっても窓ガラス等の光の透過率を制御するため、不必要な透過率制御が発生し、車内への入射光が制限されるといった問題がある。 In the method of Patent Document 1, for example, unnecessary transmittance control occurs because the transmittance of light such as a window glass is controlled even when the line of sight of a person is not directed and privacy protection is unnecessary. However, there is a problem that the incident light into the vehicle is limited.
　本開示は、車内の覗き見を防止するとともに、不必要な透過率制御による車内への入射光の制限を抑制し、乗員の快適性を向上することを目的とする。 The purpose of this disclosure is to prevent peeping inside the vehicle, suppress the restriction of incident light into the vehicle by unnecessary transmittance control, and improve the comfort of the occupants.
本開示に係わる車両用調光装置は、自車両の周囲を撮像する撮像装置の撮像した画像を取得し、自車両周囲の人の視線の方向を検出する視線検出部と、視線の方向が予め定められた時間以上前記自車両に向けられているかを判定する視線対象判定部と、視線の方向が予め定められた時間以上前記自車両に向けられている場合に、自車両の窓に配置された調光部材の透過率を低減させる透過率制御部と、を備える。 The vehicle dimming device according to the present disclosure has a line-of-sight detection unit that acquires an image captured by an image pickup device that captures the surroundings of the own vehicle and detects the direction of the line of sight of a person around the own vehicle, and a line-of-sight detection unit that detects the direction of the line of sight in advance. A line-of-sight target determination unit that determines whether or not the vehicle is directed to the own vehicle for a predetermined time or longer, and a line-of-sight target determination unit that is arranged in the window of the own vehicle when the direction of the line of sight is directed to the own vehicle for a predetermined time or longer. It is provided with a transmittance control unit for reducing the transmittance of the dimming member.
　本開示の車両用調光装置は、車内の覗き見を防止するとともに、不必要な透過率制御による車内への入射光の制限を抑制し、乗員の快適性を向上することができる。 The vehicle dimming device of the present disclosure can prevent peeping inside the vehicle, suppress the restriction of incident light into the vehicle by unnecessary transmittance control, and improve the comfort of the occupant.
本開示の実施の形態１に係わる車両を示す図である。It is a figure which shows the vehicle which concerns on Embodiment 1 of this disclosure. 本開示の実施の形態１に係わるリアガラスに調光部材を配置するときの一例の図である。It is a figure of an example when the dimming member is arranged on the rear glass which concerns on Embodiment 1 of this disclosure. 本開示の実施の形態１に係わる車両用プライバシー保護システムの構成を示すブロック図である。It is a block diagram which shows the structure of the privacy protection system for vehicles which concerns on Embodiment 1 of this disclosure. 本開示の実施形態１に係る通知の一例である。This is an example of the notification according to the first embodiment of the present disclosure. 図５Ａおよび図５Ｂは、本開示の実施の形態１に係わる、車両用調光装置のハードウェア構成例を示す図である。5A and 5B are diagrams showing a hardware configuration example of a vehicle dimmer according to the first embodiment of the present disclosure. 本開示の実施の形態１に係る車両用調光装置の動作を示すフローチャートである。It is a flowchart which shows the operation of the vehicle dimming apparatus which concerns on Embodiment 1 of this disclosure.
　以下、本開示を実施するための形態について、図を参照して説明する。なお、各図中の同一又は相当する部分には同一の符号を付しており、その重複説明は適宜に簡略化ないし省略する。 Hereinafter, the mode for implementing the present disclosure will be described with reference to the figures. The same or corresponding parts in each drawing are designated by the same reference numerals, and the duplicated description thereof will be appropriately simplified or omitted.
実施の形態１
　本実施の形態に係る車両用調光装置４０を含む車両用プライバシー保護システム１００が車両１に搭載される例について説明する。
図１は、本実施形態１に係る車両１を示す図である。
図１に示すとおり車両１にはフロントガラス１０ａ、フロントドアガラス１０ｂ、１０ｃ、リアガラス２０ａ、リアドアガラス２０ｂ、２０ｃが設けられており、各ガラスには、電圧を印加することで光の透過率を変更可能な調光部材が配置されている。なお、調光部材はフィルム状のものでもよいし、調光ガラスとして各ガラスと一体に形成されていてもよい。 Embodiment 1
An example in which the vehicle privacy protection system 100 including the vehicle dimming device 40 according to the present embodiment is mounted on the vehicle 1 will be described.
FIG. 1 is a diagram showing a vehicle 1 according to the first embodiment.
As shown in FIG. 1, the vehicle 1 is provided with a windshield 10a, a front door glass 10b, 10c, a rear glass 20a, and a rear door glass 20b, 20c, and a voltage is applied to each glass to increase the light transmittance. A changeable dimming member is arranged. The dimming member may be in the form of a film, or may be integrally formed with each glass as a dimming glass.
図２はリアガラス２０ａに調光部材を配置するときの一例である。図２は、調光部材３０ｃの透過率を下げている状況を表している
　図２に示すように、調光部材３０ａ、３０ｂ、３０ｃはリアガラス２０ａを三分割するように配置されている。リアガラス２０ａ全面に１つの調光部材を配置する構成としてもよいが、図２のように複数の領域に分けて調光部材を配置する構成とすることで、領域ごとの透過率の制御が可能となる。なお、三分割で調光部材を配置させたのは一例であり、分割数は二分割でも三分割以上でもよいし、マトリックス状に配列させてもよいし、リアガラスの一部分のみに配置させるようにしてもよい。 FIG. 2 is an example when the dimming member is arranged on the rear glass 20a. FIG. 2 shows a situation in which the transmittance of the dimming member 30c is lowered. As shown in FIG. 2, the dimming members 30a, 30b, and 30c are arranged so as to divide the rear glass 20a into three parts. One dimming member may be arranged on the entire surface of the rear glass 20a, but the transmittance can be controlled for each area by arranging the dimming member in a plurality of regions as shown in FIG. It becomes. It should be noted that the dimming member is arranged in three divisions as an example, and the number of divisions may be two divisions, three divisions or more, may be arranged in a matrix, or may be arranged only in a part of the rear glass. You may.
　なお、図２ではリアガラス２０ａについて説明したが、もちろん、フロントドアガラス１０ｂ、１０ｃ、リアドアガラス２０ｂ、２０ｃについても上述した配置で調光部材を配置することが可能である。
なお、フロントガラス２０ａについては運転者の視界を妨げない領域のみに調光部材が配置される。 Although the rear glass 20a has been described with reference to FIG. 2, it is of course possible to arrange the dimming members in the arrangement described above for the front door glasses 10b and 10c and the rear door glasses 20b and 20c.
Regarding the windshield 20a, the dimming member is arranged only in a region that does not obstruct the driver's field of vision.
　次に車両用プライバシー保護システム１００の構成について図３を用いて説明する。
　図３は本実施形態に係る車両用プライバシー保護システム１００の構成を示すブロック図であり、図３に示すとおり、車両用プライバシー保護システム１００は、車両用調光装置４０と、車外カメラ５０と、照度検出部５１と、乗員位置検出部５２と、通知部５３とを備えている。また、車両用調光装置４０は、視線検出部４１と視線対象判定部４２、透過率制御部４３とを備える。車両用調光装置４０は車外カメラ５０と、照度検出部５１と、乗員位置検出部５２と、通知部５３とに接続されている。 Next, the configuration of the vehicle privacy protection system 100 will be described with reference to FIG.
FIG. 3 is a block diagram showing the configuration of the vehicle privacy protection system 100 according to the present embodiment. As shown in FIG. 3, the vehicle privacy protection system 100 includes a vehicle dimming device 40, an external camera 50, and the vehicle exterior camera 50. It includes an illuminance detection unit 51, an occupant position detection unit 52, and a notification unit 53. Further, the vehicle dimming device 40 includes a line-of-sight detection unit 41, a line-of-sight target determination unit 42, and a transmittance control unit 43. The vehicle dimming device 40 is connected to an external camera 50, an illuminance detection unit 51, an occupant position detection unit 52, and a notification unit 53.
　車外カメラ５０は、車両１の外側に設けられており、車両１の周囲を撮像する。車外カメラ５０は、例えば可視光カメラである。
　照度検出部５１は、車両１の周囲の照度を検出するセンサであって、調光部材の近傍に設けられている。照度検出部５１は調光部材が車両１に複数備えられている場合は、調光部材毎に設けられていてもよい。照度検出部５１は、検出した照度を視線対象判定部４２に送信する。
　乗員位置検出部５２は、車両１の乗員がどの座席に位置しているかを検出する。乗員の位置は車内の乗員を撮像する乗員撮像装置の撮像した画像に基づいて検出してもよいし、車両１の座席に設けられた着座センサの情報から検出してもよい。 The vehicle exterior camera 50 is provided on the outside of the vehicle 1 and images the surroundings of the vehicle 1. The vehicle exterior camera 50 is, for example, a visible light camera.
The illuminance detection unit 51 is a sensor that detects the illuminance around the vehicle 1 and is provided in the vicinity of the dimming member. When a plurality of dimming members are provided in the vehicle 1, the illuminance detecting unit 51 may be provided for each dimming member. The illuminance detection unit 51 transmits the detected illuminance to the line-of-sight target determination unit 42.
The occupant position detection unit 52 detects in which seat the occupant of the vehicle 1 is located. The position of the occupant may be detected based on the image captured by the occupant image pickup device that images the occupant in the vehicle, or may be detected from the information of the seating sensor provided on the seat of the vehicle 1.
　次に、車両用調光装置４０の各構成について説明する。
　視線検出部４１は、車外カメラ５０が撮像した車両周囲の画像から車両１の周囲に存在する人の視線の方向を検出する。視線の方向の検出は、例えば、車外カメラ５０が撮像した車両周辺の画像から、目、鼻、口等の顔の構成要素である顔特徴点を検出し、当該顔特徴点の位置関係に基づいて算出してもよいし、眼球を検出し、眼球の回転角度から算出してもよい。 Next, each configuration of the vehicle dimming device 40 will be described.
The line-of-sight detection unit 41 detects the direction of the line of sight of a person existing around the vehicle 1 from the image around the vehicle captured by the external camera 50. The detection of the direction of the line of sight is based on, for example, detecting facial feature points that are components of the face such as eyes, nose, and mouth from the image around the vehicle captured by the external camera 50, and based on the positional relationship of the facial feature points. Or it may be calculated from the rotation angle of the eyeball by detecting the eyeball.
　更に、視線検出部４１は、視線を検出している人との距離を算出する。視線検出部４１は、例えば、車両１からの距離と顔の大きさの対応表を予め記憶部（不図示）に備えておき、車外カメラ５０が撮像した車両周囲の画像から検出した顔の大きさから距離を算出する。 Further, the line-of-sight detection unit 41 calculates the distance to the person who is detecting the line of sight. For example, the line-of-sight detection unit 41 prepares a correspondence table of the distance from the vehicle 1 and the size of the face in the storage unit (not shown) in advance, and the size of the face detected from the image around the vehicle captured by the external camera 50. Calculate the distance from it.
　更に、視線検出部４１は、上記で算出した視線を検出している人との距離の時間変化を検出し、視線を検出している人との相対速度を算出する。
　なお、本実施の形態では、視線検出部４１が車外カメラの撮像した画像から相対速度を取得する構成としているが、相対速度を測定可能な構成であればよいものであり、例えばミリ波レーダなどを用いた距離計測技術を応用してもよい。 Further, the line-of-sight detection unit 41 detects the time change of the distance to the person detecting the line-of-sight calculated above, and calculates the relative speed with the person detecting the line-of-sight.
In the present embodiment, the line-of-sight detection unit 41 acquires the relative speed from the image captured by the camera outside the vehicle. However, any configuration can be used as long as the relative speed can be measured, for example, a millimeter wave radar or the like. The distance measurement technique using the above may be applied.
　視線検出部４１は、視線の方向、視線を向けている人との距離および視線を向けている人との相対速度の情報を視線対象判定部４２に送信する。 The line-of-sight detection unit 41 transmits information on the direction of the line of sight, the distance to the person who is directing the line of sight, and the relative speed with the person who is directing the line of sight to the line-of-sight target determination unit 42.
　視線対象判定部４２は、視線検出部４１が検出した視線の方向が予め定められた時間以上車両１に向けられているかを判定する。なお、視線対象判定部４２は、視線が車両１の窓ガラスのうち、どの窓ガラスに向けられているかを判定してもよい。
また、予め定められた時間は、例えば３秒であり、たまたま車両１に視線を向けただけでは車両１を視認していると判定されないような時間が設定されている。
　視線対象判定部４２は、視線を向けているかの判定結果、視線を向けている人との距離および視線を向けている人との相対速度の情報を併せて透過率制御部４３に送信する。 The line-of-sight target determination unit 42 determines whether the direction of the line of sight detected by the line-of-sight detection unit 41 is directed toward the vehicle 1 for a predetermined time or longer. The line-of-sight target determination unit 42 may determine which window glass of the vehicle 1 the line of sight is directed to.
Further, the predetermined time is, for example, 3 seconds, and a time is set so that it is not determined that the vehicle 1 is visually recognized only by accidentally directing the line of sight to the vehicle 1.
The line-of-sight target determination unit 42 transmits, as a result of determining whether or not the line of sight is directed, information on the distance to the person who is directing the line of sight and the relative speed with the person who is directing the line of sight to the transmittance control unit 43.
　透過率制御部４３は、各窓ガラスに配置された調光部材に個別に駆動用電圧を出力する電源部を備え、この電源部を制御する演算処理部により構成される。 The transmittance control unit 43 includes a power supply unit that individually outputs a driving voltage to the dimming member arranged on each window glass, and is composed of an arithmetic processing unit that controls the power supply unit.
透過率制御部４３は、視線対象判定部４２が、視線検出部４１が検出した視線の方向が予め定められた時間以上車両１に向けられていると判定した場合に、調光部材の透過率を低減させる。視線対象判定部４２が、車両１の窓ガラスのうち、どの窓ガラスに車両周囲の人の視線が向けられているかまで判定する場合、透過率制御部４２は、車両周囲の人の視線が向けられている窓ガラスのみ透過率を低減させる。この場合、車両周囲の人から覗かれている窓ガラスのみを外から覗けないようにするため、車内の乗員のプライバシーを保護しつつ、車内が暗くなりすぎてしまうのを抑制することが可能となる。また、全ての窓の調光部材の透過率を低減させるのに比べ消費電力を抑制することが可能となる。 When the line-of-sight target determination unit 42 determines that the direction of the line of sight detected by the line-of-sight detection unit 41 is directed toward the vehicle 1 for a predetermined time or longer, the transmittance control unit 43 determines that the transmittance of the dimming member is high. To reduce. When the line-of-sight target determination unit 42 determines which window glass of the vehicle 1 the line of sight of a person around the vehicle is directed to, the transmission rate control unit 42 directs the line of sight of a person around the vehicle. The transmission rate is reduced only for the window glass that is used. In this case, since only the window glass that is being viewed by people around the vehicle cannot be seen from the outside, it is possible to protect the privacy of the occupants in the vehicle and prevent the interior of the vehicle from becoming too dark. Become. In addition, it is possible to suppress power consumption as compared with reducing the transmittance of the dimming member of all windows.
なお、視線対象判定部４２が、車両１の窓ガラスのうち、どの窓ガラスに車両周囲の人の視線が向けられているかまで判定する場合、乗員位置検出部５２が取得した乗員位置に基づき、視線が向けられている窓から見える位置に乗員が存在するかを判定し、視線が向けられている窓から見える位置に乗員が存在する場合に視線が向けられている窓の透過率を低減させるようにしてもよい。 When the line-of-sight target determination unit 42 determines which window glass of the vehicle 1 the line of sight of a person around the vehicle is directed to, the line-of-sight target determination unit 42 is based on the occupant position acquired by the occupant position detection unit 52. Determines if the occupant is in a position visible through the window in which the line of sight is directed, and reduces the transparency of the window in which the line of sight is directed when the occupant is in a position visible from the window in which the line of sight is directed. You may do so.
　調光部材の透過率の低減度合いは常時一定でもよいが、車両周辺の照度、視線を向けている人との距離および視線を向けている人との相対速度の内、少なくとも１つに基づいて調光部材の透過率の低減度合いを変更することでより、効率的なプライバシーの保護を行うことが可能となる。
　以下、車両周辺の照度、視線を向けている人との距離および視線を向けている人との相対速度に応じて透過率の低減度合いを変化させる例について説明する。 The degree of reduction in the transmittance of the dimming member may be constant at all times, but is based on at least one of the illuminance around the vehicle, the distance to the person looking at the vehicle, and the relative speed to the person looking at the person. By changing the degree of reduction in the transmittance of the dimming member, it is possible to protect privacy more efficiently.
Hereinafter, an example in which the degree of reduction of the transmittance is changed according to the illuminance around the vehicle, the distance to the person looking at the vehicle, and the relative speed with the person looking at the vehicle will be described.
＜照度＞
　車両周囲の照度が明るいほど、車両の内部の視認が容易になる。従って、照度センサ５１の検出した明照度が明るいほど調光部材の透過率を低減させる。照度ごとの透過率の低減率については、予め設定されていてもよいし、乗員が任意に設定可能としてもよい。
　車両に照度センサが存在しない場合は、昼の場合は調光部材の透過率の低減率を大きく、夜は透過率の低減率を小さくするなど、時刻に応じて変更させてもよい。 <Illuminance>
The brighter the illuminance around the vehicle, the easier it is to see the inside of the vehicle. Therefore, the brighter the bright illuminance detected by the illuminance sensor 51, the lower the transmittance of the dimming member. The reduction rate of the transmittance for each illuminance may be set in advance or may be arbitrarily set by the occupant.
When the vehicle does not have an illuminance sensor, it may be changed according to the time, such as increasing the reduction rate of the transmittance of the dimming member in the daytime and decreasing the reduction rate of the transmittance at night.
　＜視線を向けている人との距離＞
　車両１に視線を向けている人と車両１との距離は近いほど車両１の内部が視認しやすくなる。従って、車両１に視線を向けている人の距離が近いほど、調光部材の透過率を低減させる。距離ごとの透過率の低減率については、予め設定されていてもよいし、乗員が任意に設定可能としてもよい。 <Distance to the person who is looking at you>
The closer the distance between the person who is looking at the vehicle 1 and the vehicle 1, the easier it is to see the inside of the vehicle 1. Therefore, the closer the person looking at the vehicle 1 is, the lower the transmittance of the dimming member is. The reduction rate of the transmittance for each distance may be set in advance, or may be arbitrarily set by the occupant.
　＜視線を向けている人との相対速度＞
　車両１に視線を向けている人と車両１の相対速度が２０ｋｍ／時以上の場合、つまり、止まっている歩行者の前を通過するような状況では、歩行者は走行している車両の内部を視認するのは困難である。一方、車両１に視線を向けている人と車両１の相対速度が２０ｋｍ／時よりも遅い場合、つまり、車両１が停車している、または、車両１に視線を向けている人が車両で並走しているような場合では、車両１の内部を視認することが可能である。従って、
車両１に視線を向けている人と車両１の相対速度がゼロに近づくほど、調光部材の透過率を低減させる。 <Relative velocity with the person looking at you>
When the relative speed between the person looking at the vehicle 1 and the vehicle 1 is 20 km / hour or more, that is, when the vehicle passes in front of a stopped pedestrian, the pedestrian is inside the running vehicle. Is difficult to see. On the other hand, when the relative speed between the person looking at the vehicle 1 and the vehicle 1 is slower than 20 km / hour, that is, the person who is stopped or the person looking at the vehicle 1 is the vehicle. In the case of running in parallel, it is possible to visually recognize the inside of the vehicle 1. Therefore,
As the relative speed between the person looking at the vehicle 1 and the vehicle 1 approaches zero, the transmittance of the dimming member is reduced.
　通知部５３は、視線対象判定部４２が、車両周囲に存在する人が車両１に視線を向けていると判定した場合に、車両１の乗員に車両周囲に存在する人の視線が車両１に向けられているため窓の透過率を低減させる旨を車両の乗員に通知する。通知方法は車両のナビゲーション装置の表示部への表示や、音声で出力等が考えられる。
図４は実施の形態１に係る通知の一例であり、通知部５３は、図４のように窓の透過率を低減させるかどうかを車両の乗員が選択可能な通知を行ってもよい。この場合、透過率制御部４２は、車両の乗員が調光部材の透過率を低減させることを選択した場合に、透過率を低減するように制御する。 When the line-of-sight target determination unit 42 determines that a person present around the vehicle is directing the line of sight to the vehicle 1, the line-of-sight target determination unit 43 directs the line of sight of the person present around the vehicle to the vehicle 1 to the occupant of the vehicle 1. Notify the occupants of the vehicle that the window transmittance will be reduced because it is aimed. As the notification method, display on the display unit of the navigation device of the vehicle, output by voice, etc. can be considered.
FIG. 4 is an example of the notification according to the first embodiment, and the notification unit 53 may give a notification that the occupant of the vehicle can select whether or not to reduce the transmittance of the window as shown in FIG. In this case, the transmittance control unit 42 controls to reduce the transmittance when the occupant of the vehicle chooses to reduce the transmittance of the dimming member.
　次に、車両用調光装置４０のハードウェア構成例を説明する。
　図５Ａおよび図５Ｂは、車両用調光装置４０のハードウェア構成例を示す図である。
　車両用調光装置４０における視線検出部４１、視線対象判定部４２および透過率制御部４３の各機能は、処理回路によって実現される。即ち、車両用調光装置４０は上記各機能を実現するための処理回路を備える。当該処理回路は、図５Ａに示すように専用のハードウェアである処理回路２００ａであってもよいし、図５Ｂに示すようにメモリ２００ｃに格納されているプログラムを実行するプロセッサ２００ｂであってもよい。 Next, a hardware configuration example of the vehicle dimming device 40 will be described.
5A and 5B are diagrams showing a hardware configuration example of the vehicle dimming device 40.
Each function of the line-of-sight detection unit 41, the line-of-sight target determination unit 42, and the transmittance control unit 43 in the vehicle dimming device 40 is realized by a processing circuit. That is, the vehicle dimming device 40 includes a processing circuit for realizing each of the above functions. The processing circuit may be a processing circuit 200a which is dedicated hardware as shown in FIG. 5A, or may be a processor 200b which executes a program stored in the memory 200c as shown in FIG. 5B. good.
　図５Ａに示すように、視線検出部４１、視線対象判定部４２および透過率制御部４３が専用のハードウェアである場合、処理回路２００ａは、例えば、単一回路、複合回路、プログラム化したプロセッサ、並列プログラム化したプロセッサ、ＡＳＩＣ（Ａｐｐｌｉｃａｔｉｏｎ　Ｓｐｅｃｉｆｉｃ　Ｉｎｔｅｇｒａｔｅｄ　Ｃｉｒｃｕｉｔ）、ＦＰＧＡ（Ｆｉｅｌｄ－ｐｒｏｇｒａｍｍａｂｌｅ　Ｇａｔｅ　Ａｒｒａｙ）、またはこれらを組み合わせたものが該当する。視線検出部４１、視線対象判定部４２および透過率制御部４３の各部の機能それぞれ処理回路で実現してもよいし、各部の機能をまとめて１つの処理回路で実現してもよい。 As shown in FIG. 5A, when the line-of-sight detection unit 41, the line-of-sight target determination unit 42, and the transmission rate control unit 43 are dedicated hardware, the processing circuit 200a is, for example, a single circuit, a composite circuit, or a programmed processor. , A parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-programmable Gate Array), or a combination thereof. The functions of the line-of-sight detection unit 41, the line-of-sight target determination unit 42, and the transmittance control unit 43 may be realized by processing circuits, or the functions of each part may be collectively realized by one processing circuit.
　図５Ｂに示すように、視線検出部４１、視線対象判定部４２および透過率制御部４３がプロセッサ２００ｂである場合、各部の機能は、ソフトウェア、ファームウェア、またはソフトウェアとファームウェアとの組み合わせにより実現される。ソフトウェアまたはファームウェアはプログラムとして記述され、メモリ２００ｃに格納される。プロセッサ２００ｂは、メモリ２００ｃに記憶されたプログラムを読み出して実行することにより、視線検出部４１、視線対象判定部４２および透過率制御部４３の各機能を実現する。即ち、視線検出部４１、視線対象判定部４２および透過率制御部４３は、プロセッサ２００ｂにより実行されるときに、後述する図４に示す各ステップが結果的に実行されることになるプログラムを格納するためのメモリ２００ｃを備える。また、これらのプログラムは、視線検出部４１、視線対象判定部４２および透過率制御部４３の手順または方法をコンピュータに実行させるものであるともいえる。 As shown in FIG. 5B, when the line-of-sight detection unit 41, the line-of-sight target determination unit 42, and the transmittance control unit 43 are processors 200b, the functions of each unit are realized by software, firmware, or a combination of software and firmware. .. The software or firmware is written as a program and stored in the memory 200c. The processor 200b realizes each function of the line-of-sight detection unit 41, the line-of-sight target determination unit 42, and the transmittance control unit 43 by reading and executing the program stored in the memory 200c. That is, the line-of-sight detection unit 41, the line-of-sight target determination unit 42, and the transmittance control unit 43 store a program in which each step shown in FIG. 4, which will be described later, is eventually executed when executed by the processor 200b. A memory 200c for the purpose is provided. Further, it can be said that these programs cause the computer to execute the procedure or method of the line-of-sight detection unit 41, the line-of-sight target determination unit 42, and the transmittance control unit 43.
　ここで、プロセッサ２００ｂとは、例えば、ＣＰＵ（Ｃｅｎｔｒａｌ Ｐｒｏｃｅｓｓｉｎｇ Ｕｎｉｔ）、処理装置、演算装置、プロセッサ、マイクロプロセッサ、マイクロコンピュータ、またはＤＳＰ（Ｄｉｇｉｔａｌ Ｓｉｇｎａｌ Ｐｒｏｃｅｓｓｏｒ）などのことである。メモリ２００ｃは、例えば、ＲＡＭ（Ｒａｎｄｏｍ Ａｃｃｅｓｓ Ｍｅｍｏｒｙ）、ＲＯＭ（Ｒｅａｄ Ｏｎｌｙ Ｍｅｍｏｒｙ）、フラッシュメモリ、ＥＰＲＯＭ（Ｅｒａｓａｂｌｅ Ｐｒｏｇｒａｍｍａｂｌｅ ＲＯＭ）、ＥＥＰＲＯＭ（Ｅｌｅｃｔｒｉｃａｌｌｙ ＥＰＲＯＭ）等の不揮発性または揮発性の半導体メモリであってもよいし、ハードディスク、フレキシブルディスク等の磁気ディスクであってもよいし、ミニディスク、ＣＤ（Ｃｏｍｐａｃｔ Ｄｉｓｃ）、ＤＶＤ（Ｄｉｇｉｔａｌ Ｖｅｒｓａｔｉｌｅ Ｄｉｓｃ）等の光ディスクであってもよい。 Here, the processor 200b is, for example, a CPU (Central Processing Unit), a processing device, an arithmetic unit, a processor, a microprocessor, a microcomputer, a DSP (Digital Signal Processor), or the like. The memory 200c may be, for example, a non-volatile or volatile semiconductor memory such as a RAM (Random Access Memory), a ROM (Read Only Memory), a flash memory, an EPROM (Erasable Program ROM), or an EPROM (Electrically EPROM). However, it may be a magnetic disk such as a hard disk or a flexible disk, or an optical disk such as a mini disk, a CD (Compact Disc), or a DVD (Digital Versaille Disc).
　なお、視線検出部４１、視線対象判定部４２および透過率制御部４３の各機能について、一部を専用のハードウェアで実現し、一部をソフトウェアまたはファームウェアで実現するようにしてもよい。このように、車両用調光装置４０における処理回路２００ａは、ハードウェア、ソフトウェア、ファームウェア、または、これらの組み合わせによって、上述の各機能を実現することができる。 Note that some of the functions of the line-of-sight detection unit 41, the line-of-sight target determination unit 42, and the transmittance control unit 43 may be realized by dedicated hardware and partly by software or firmware. As described above, the processing circuit 200a in the vehicle dimmer 40 can realize each of the above-mentioned functions by hardware, software, firmware, or a combination thereof.
　次に、車両用調光装置４０の動作について図６を用いて説明する。
　図６は本開示の実施の形態１に係る車両用調光装置４０の動作を示すフローチャートである。
　視線検出部４１は、車両１の外側に設けられた車外カメラ５０の撮像した画像を取得し（ＳＴ１）、車両１の周囲に存在する人の視線の方向を検出する（ＳＴ２）。視線対象判定部４２は、視線検出部４０が検出した車両周囲の人の視線の方向が予め定められた時間以上車両１に向けられているか判定する（ＳＴ３）。
視線対象判定部４２が車両周囲の人の視線の方向が予め定められた時間以上車両１に向けられていると判定した場合（ＳＴ３：ＹＥＳ）、透過制御部４３は、車両１の窓に設けられた調光部材の透過率を低減させる（ＳＴ４）。
一方、視線対象判定部４１が車両周囲の人の視線の方向が予め定められた時間以上車両１に向けられていないと判定した場合（ＳＴ３：ＮＯ）、ＳＴ１の処理に戻る。 Next, the operation of the vehicle dimming device 40 will be described with reference to FIG.
FIG. 6 is a flowchart showing the operation of the vehicle dimming device 40 according to the first embodiment of the present disclosure.
The line-of-sight detection unit 41 acquires an image captured by an external camera 50 provided on the outside of the vehicle 1 (ST1), and detects the direction of the line of sight of a person existing around the vehicle 1 (ST2). The line-of-sight target determination unit 42 determines whether or not the direction of the line of sight of a person around the vehicle detected by the line-of-sight detection unit 40 is directed toward the vehicle 1 for a predetermined time or longer (ST3).
When the line-of-sight target determination unit 42 determines that the direction of the line of sight of a person around the vehicle is directed toward the vehicle 1 for a predetermined time or longer (ST3: YES), the transmission control unit 43 is provided in the window of the vehicle 1. The transmittance of the dimming member is reduced (ST4).
On the other hand, when the line-of-sight target determination unit 41 determines that the direction of the line of sight of a person around the vehicle is not directed toward the vehicle 1 for a predetermined time or longer (ST3: NO), the process returns to ST1.
　以上のように、本実施の形態１においては、自車両の周囲を撮像する撮像装置の撮像した画像を取得し、自車両周囲の人の視線の方向を検出する視線検出部と、視線の方向が予め定められた時間以上自車両に向けられているかを判定する視線対象判定部と、視線の方向が予め定められた時間以上自車両に向けられている場合に、自車両の窓に配置された調光部材の透過率を低減させる透過率制御部と、を備える構成にしたため、車内の覗き見を防止するとともに、不必要な透過率制御による車内への入射光の制限を抑制し、乗員の快適性を向上することができる。 As described above, in the first embodiment, the line-of-sight detection unit that acquires the image captured by the image pickup device that captures the surroundings of the own vehicle and detects the direction of the line of sight of a person around the own vehicle, and the direction of the line of sight. Is placed in the window of the own vehicle when the line-of-sight target determination unit determines whether or not the light is directed toward the own vehicle for a predetermined time or longer and when the direction of the line of sight is directed toward the own vehicle for a predetermined time or longer. Since it is configured to have a transmittance control unit that reduces the transmittance of the dimming member, it prevents peeping inside the vehicle and suppresses the restriction of incident light into the vehicle due to unnecessary transmittance control. Comfort can be improved.
　また、視線対象判定部４２が、視線が車両１の窓ガラスのうち、どの窓ガラスに向けられているかまで判定する場合、両周囲の人から覗かれている窓ガラスのみを外から覗けないようにするため、車内の乗員のプライバシーを保護しつつ、車内が暗くなりすぎてしまうのを抑制することが可能となる。また、全ての窓の調光部材の透過率を低減させるのに比べ消費電力を抑制することが可能となる。 Further, when the line-of-sight target determination unit 42 determines which window glass of the vehicle 1 the line of sight is directed to, it is necessary to prevent the line-of-sight target determination unit 42 from looking only at the window glass seen by people around both sides. Therefore, it is possible to prevent the inside of the vehicle from becoming too dark while protecting the privacy of the occupants in the vehicle. In addition, it is possible to suppress power consumption as compared with reducing the transmittance of the dimming member of all windows.
　また、車両周辺の照度、視線を向けている人との距離および視線を向けている人との相対速度の内、少なくとも１つに基づいて調光部材の透過率の低減度合いを変更することによって、適切な透過率の変更が可能となり、乗員の快適性を向上することができる。 Further, by changing the degree of reduction of the transmittance of the dimming member based on at least one of the illuminance around the vehicle, the distance to the person who is looking at the vehicle, and the relative speed to the person who is looking at the vehicle. , It is possible to change the transmittance appropriately, and it is possible to improve the comfort of the occupants.
１　車両用プライバシー保護システムを備えた車両
１０　フロントガラス
１０ａ　フロントガラス、１０ｂ　右フロントドアガラス、１０ｃ　左フロントドアガラス
２０ａ　リアガラス、２０ｂ　右リアドアガラス、２０ｃ　左リアドアガラス
３０ａ、３０ｂ、３０ｃ　調光部材
４０　車両用調光装置、４１　視線検出部、４２　視線対象判定部
４３　透過率制御部、
５０　車外カメラ、５１　照度検出部、５２　乗員位置検出部、５３　通知部
２００ａ　処理回路、２００ｂ　プロセッサ、２００ｃ　メモリ 1 Vehicle with privacy protection system for vehicles 10 Windshield 10a Windshield, 10b Right front door glass, 10c Left front door glass 20a Rear glass, 20b Right rear door glass, 20c Left rear door glass 30a, 30b, 30c Dimming member 40 Vehicles Dimming device, 41 line-of-sight detection unit, 42 line-of-sight target determination unit 43 transmission rate control unit,
50 External camera, 51 Illuminance detection unit, 52 Crew position detection unit, 53 Notification unit 200a processing circuit, 200b processor, 200c memory

Claims (7)

  1. 　自車両の周囲を撮像する撮像装置の撮像した画像を取得し、前記自車両周囲の人の視線の方向を検出する視線検出部と、
    　前記視線の方向が予め定められた時間以上前記自車両に向けられているかを判定する視線対象判定部と、
    　前記視線の方向が予め定められた時間以上前記自車両に向けられている場合に、前記自車両の窓に配置された調光部材の透過率を低減させる透過率制御部と、
    　を備える車両用調光装置。     A line-of-sight detection unit that acquires an image captured by an imaging device that captures the surroundings of the own vehicle and detects the direction of the line of sight of a person around the own vehicle.
    A line-of-sight target determination unit that determines whether the direction of the line of sight is directed toward the own vehicle for a predetermined time or longer.
    A transmittance control unit that reduces the transmittance of the dimming member arranged in the window of the own vehicle when the direction of the line of sight is directed to the own vehicle for a predetermined time or longer.
    A vehicle dimming device equipped with.
  2. 　前記視線対象判定部は、前記自車両周囲の人の視線の方向が前記自車両に設けられた複数の窓の内、いずれの窓に向けられているかを判定し、
    　前記透過率制御部は、前記視線が向けられている窓に配置された調光部材の透過率を低減させる請求項１記載の車両用調光装置。     The line-of-sight target determination unit determines which of the plurality of windows provided in the own vehicle the direction of the line of sight of a person around the own vehicle is directed to.
    The vehicle dimming device according to claim 1, wherein the transmittance control unit reduces the transmittance of a dimming member arranged in a window to which the line of sight is directed.
  3. 　前記透過率制御部は、前記視線が向けられている窓に対応した座席に乗員が存在するか否かを判定し、前記視線が向けられている窓に対応した座席に乗員が存在する場合、前記透過率制御部は、前記視線が向けられている窓に設けられた調光部材の透過率を低減させ、前記視線が向けられている窓に対応した座席に乗員が存在しない場合、前記透過率制御部は、前記視線が向けられている窓に設けられた調光部材の透過率を低減させない請求項２記載の車両用調光装置。 The transmittance control unit determines whether or not there is an occupant in the seat corresponding to the window to which the line of sight is directed, and when the occupant is present in the seat corresponding to the window to which the line of sight is directed, the transmittance control unit determines. The transmittance control unit reduces the transmittance of the dimming member provided in the window to which the line of sight is directed, and when there is no occupant in the seat corresponding to the window to which the line of sight is directed, the transmittance is transmitted. The vehicle dimming device according to claim 2, wherein the rate control unit does not reduce the transmittance of the dimming member provided in the window to which the line of sight is directed.
  4. 　前記透過率制御部は、前記自車両に視線を向けている人と前記自車両との相対速度を取得し、前記透過率制御部は、前記相対速度に基づいて前記透過率の低減度合いを変化させる請求項１または請求項２記載の車両用調光装置。 The transmittance control unit acquires the relative speed between the person who is looking at the own vehicle and the own vehicle, and the transmittance control unit changes the degree of reduction of the transmittance based on the relative speed. The vehicle dimming device according to claim 1 or 2.
  5. 　前記視線検出部は、前記自車両周囲の人と距離を検出し、前記透過率制御部は、前記距離に基づいて前記透過率の低減度合いを変化させる請求項１または請求項２記載の車両用調光装置。 The vehicle according to claim 1 or 2, wherein the line-of-sight detection unit detects a distance from a person around the own vehicle, and the transmittance control unit changes the degree of reduction of the transmittance based on the distance. Dimmer.
  6. 　前記透過率制御部は、前記車両周囲の照度を取得し、前記照度に応じて前記調光部材の低減度合を変更する請求項１または請求項２記載の車両用調光装置。 The vehicle dimming device according to claim 1 or 2, wherein the transmittance control unit acquires the illuminance around the vehicle and changes the degree of reduction of the dimming member according to the illuminance.
  7. 　自車両の周囲を撮像する撮像装置の撮像した画像を取得し、前記自車両周囲の人の視線の方向を検出するステップと、
    　前記視線の方向が予め定められた時間以上前記自車両に向けられているかを判定するステップと、
    　前記視線の方向が予め定められた時間以上前記自車両に向けられている場合に、前記自車両の窓に配置された調光部材の透過率を低減させるステップと、
    　を含む調光方法。     A step of acquiring an image captured by an imaging device that captures the surroundings of the own vehicle and detecting the direction of the line of sight of a person around the own vehicle.
    A step of determining whether the direction of the line of sight is directed toward the own vehicle for a predetermined time or longer, and
    A step of reducing the transmittance of the dimming member arranged in the window of the own vehicle when the direction of the line of sight is directed to the own vehicle for a predetermined time or longer.
    Dimming methods including.
PCT/JP2020/014751 2020-03-31 2020-03-31 Light control device for vehicle and light control method WO2021199244A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003271084A (en) * 2002-03-15 2003-09-25 Omron Corp Apparatus and method for providing information
JP2007326526A (en) * 2006-06-09 2007-12-20 Quality Kk Light control device of window glass for vehicles
JP2013205526A (en) * 2012-03-28 2013-10-07 Sony Corp Display device and display control method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003271084A (en) * 2002-03-15 2003-09-25 Omron Corp Apparatus and method for providing information
JP2007326526A (en) * 2006-06-09 2007-12-20 Quality Kk Light control device of window glass for vehicles
JP2013205526A (en) * 2012-03-28 2013-10-07 Sony Corp Display device and display control method

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