JP2020192899A - Vehicular light control system - Google Patents

Vehicular light control system Download PDF

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JP2020192899A
JP2020192899A JP2019099876A JP2019099876A JP2020192899A JP 2020192899 A JP2020192899 A JP 2020192899A JP 2019099876 A JP2019099876 A JP 2019099876A JP 2019099876 A JP2019099876 A JP 2019099876A JP 2020192899 A JP2020192899 A JP 2020192899A
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vehicle
information
light emitting
light
dimming
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元貴 前川
Mototaka Maekawa
元貴 前川
慎貴 酒向
Shinki Sako
慎貴 酒向
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Toyota Boshoku Corp
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Toyota Boshoku Corp
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Priority to JP2019099876A priority Critical patent/JP2020192899A/en
Priority to US16/881,423 priority patent/US20200376937A1/en
Priority to CN202010479112.5A priority patent/CN112015021A/en
Publication of JP2020192899A publication Critical patent/JP2020192899A/en
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  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
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Abstract

To provide a vehicular light control system capable of controlling the brightness in a cabin of a vehicle regardless of day or night.SOLUTION: A vehicular light control system 1 comprises: an incident part 5 through which external light enters; a light control member 7 provided to the incident part 5; a light emitting part 9 provided in a cabin of a vehicle 3; and a control part 11. The control part 11 controls the transmissivity of the light control member 7 and controls the illuminance of the light emitting part 9. The vehicular light control system 1 comprises an information acquisition part 15 for acquiring information about predetermined objects in the cabin. The information acquisition part 15 is constituted of a sensor group consisted of various sensors which acquire information about the predetermined objects.SELECTED DRAWING: Figure 1

Description

本発明は、乗物用調光システムに関する。 The present invention relates to a vehicle dimming system.

窓に貼り付けて外部光の透過を制御する調光部材を用いた車両用調光システムが知られている（特許文献１参照）。この車両用調光システムは、調光フィルムの制御目標となる制御モードの選択を受け付ける制御モード選択部と、調光フィルムの透過率を制御する駆動制御部とを備えている。駆動制御部は、制御モード選択部により選択された制御モードに基づいて、調光フィルムの透過率を調整する。 A vehicle dimming system using a dimming member that is attached to a window to control the transmission of external light is known (see Patent Document 1). This vehicle dimming system includes a control mode selection unit that accepts selection of a control mode that is a control target of the dimming film, and a drive control unit that controls the transmittance of the dimming film. The drive control unit adjusts the transmittance of the light control film based on the control mode selected by the control mode selection unit.

特開２０１８−１７７１９３号公報Japanese Unexamined Patent Publication No. 2018-177193

しかし、従来の車両用調光システムでは、以下の課題があった。すなわち、このシステムは、調光フィルムの透過率の制御のみを行うシステムであるため、日中の日照時間のみしか調光できないという課題があった。
また、このシステムでは、車室内が明るすぎる場合に、外部光を遮って車室内の明るさを低減できるが、車室内が暗すぎる場合に、車室内の明るさを増加できない。
本発明は、上記実情に鑑みてなされたものであり、乗物の室内の明るさを昼夜問わずに調整できる乗物用調光システムを提供することを目的とする。本発明は、以下の形態として実現することが可能である。 However, the conventional vehicle dimming system has the following problems. That is, since this system is a system that only controls the transmittance of the dimming film, there is a problem that dimming can be performed only during the daytime sunshine hours.
Further, in this system, when the vehicle interior is too bright, the external light can be blocked to reduce the brightness of the vehicle interior, but when the vehicle interior is too dark, the brightness of the vehicle interior cannot be increased.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle dimming system capable of adjusting the indoor brightness of a vehicle day and night. The present invention can be realized as the following forms.

〔１〕乗物用調光システムであって、
外部光が入射する入射部と、
前記入射部に配された調光部材と、
乗物の室内に設けられた発光部と、
前記調光部材の透過率を制御し、かつ前記発光部の照度を制御する制御部と、を備える乗物用調光システム。 [1] A dimming system for vehicles.
The incident part where external light is incident and
The dimming member arranged in the incident part and
The light emitting part provided in the room of the vehicle and
A vehicle dimming system including a control unit that controls the transmittance of the dimming member and controls the illuminance of the light emitting unit.

本開示によれば、調光部材の透過率を制御しつつ、発光部の照度を制御するから、乗物の室内の明るさを昼夜問わずに調整できる。 According to the present disclosure, since the illuminance of the light emitting unit is controlled while controlling the transmittance of the dimming member, the brightness inside the vehicle can be adjusted day and night.

乗物用調光システム１が搭載された乗物３を鉛直上方から見た概略図である。It is the schematic which looked at the vehicle 3 which mounted the dimming system 1 for a vehicle from the vertical upper side. 乗物用調光システム１の全体構成を示すブロック図である。It is a block diagram which shows the whole structure of the dimming system 1 for a vehicle. 調光部材７を示す分解斜視図である。It is an exploded perspective view which shows the dimming member 7. 調光部材７の透過率の変化を示す概念図である。It is a conceptual diagram which shows the change of the transmittance of a light control member 7. 照射範囲２７を示す概念図である。It is a conceptual diagram which shows the irradiation range 27. 乗物用調光システム１の処理手順の一例を示すフローチャートである。It is a flowchart which shows an example of the processing procedure of the dimming system 1 for a vehicle.

ここで、本開示の望ましい例を示す。
〔２〕更に、室内の所定対象物の情報を取得する情報取得部を、備え、
前記制御部は、前記情報取得部によって取得された前記情報に基づいて、前記調光部材の前記透過率を調整し、かつ、前記発光部の照度を調整する〔１〕に記載の乗物用調光システム。
このようにすれば、所定対象物の情報に基づいて明るさが調整できるから、より適切な調光をすることができる。 Here, a desirable example of the present disclosure is shown.
[2] Further, an information acquisition unit for acquiring information on a predetermined object in the room is provided.
The vehicle adjustment according to [1], wherein the control unit adjusts the transmittance of the dimming member and adjusts the illuminance of the light emitting unit based on the information acquired by the information acquisition unit. Optical system.
By doing so, the brightness can be adjusted based on the information of the predetermined object, so that more appropriate dimming can be performed.

〔３〕前記制御部は、前記情報から得られる前記所定対象物の状態が、前記室内の明るさが予め定められた第１閾値よりも低いことに起因して生じている状態であると判断される場合には、前記発光部の照度を現状よりも高くするように制御し、
前記情報から得られる前記所定対象物の状態が、前記室内の明るさが予め定められた第２閾値よりも高いことに起因して生じていると判断される場合には、前記調光部材の前記透過率を現状よりも低下させるように制御する〔２〕に記載の乗物用調光システム。
このようにすれば、所定対象物の状態が、より望ましくなるように、明るさがコントロールされる。 [3] The control unit determines that the state of the predetermined object obtained from the information is caused by the brightness of the room being lower than a predetermined first threshold value. If so, the illuminance of the light emitting unit is controlled to be higher than the current state.
When it is determined that the state of the predetermined object obtained from the information is caused by the brightness of the room being higher than a predetermined second threshold value, the dimming member The vehicle dimming system according to [2], wherein the transmittance is controlled to be lower than the current level.
In this way, the brightness is controlled so that the state of the predetermined object becomes more desirable.

〔４〕前記情報が、前記所定対象物の明るさ、前記所定対象物の温度、まばたき回数、及び目の瞳孔の径からなる群から選択される少なくとも１つである請求項〔２〕又は〔３〕に記載の乗物用調光システム。
このようにすれば、所定対象物の明るさ、所定対象物の温度、まばたき回数、目の瞳孔の径が、より望ましくなるように、明るさがコントロールされるから、乗員がより快適に過ごせるようになる。 [4] Claim [2] or [4], wherein the information is at least one selected from the group consisting of the brightness of the predetermined object, the temperature of the predetermined object, the number of blinks, and the diameter of the pupil of the eye. The vehicle dimming system according to 3].
In this way, the brightness is controlled so that the brightness of the predetermined object, the temperature of the predetermined object, the number of blinks, and the diameter of the pupil of the eye are more desirable, so that the occupant can spend more comfortably. become.

〔５〕前記所定対象物は、複数の乗員であり、
前記情報取得部は、複数の前記乗員の個々の個別情報を取得し、
前記制御部は、前記乗員の個々の所定エリアの明るさが、それぞれ所定照度になるように、前記調光部材の前記透過率を調整し、かつ、前記発光部の照度を調整する〔２〕〜〔４〕のいずれか１項に記載の乗物用調光システム。
このようにすれば、個々の乗員に対して、それぞれ明るさを最適化できる。 [5] The predetermined object is a plurality of occupants.
The information acquisition unit acquires individual individual information of the plurality of occupants, and obtains individual information.
The control unit adjusts the transmittance of the dimming member and adjusts the illuminance of the light emitting unit so that the brightness of each predetermined area of the occupant becomes a predetermined illuminance [2]. The vehicle dimming system according to any one of [4].
In this way, the brightness can be optimized for each occupant.

本発明の乗物用調光システム１を備える乗物３の実施形態について、図面を参照しながら詳細に説明する。
図１は、乗物用調光システム１が搭載された乗物３を鉛直上方から見た概略図である。図２は、乗物用調光システム１の全体構成を示すブロック図である。
乗物用調光システム１は、外部光が入射する入射部５と、入射部５に配された調光部材７と、乗物３の室内に設けられた発光部９と、制御部１１（ＥＣＵ（Ｅｌｅｃｔｒｏｎｉｃ Ｃｏｎｔｒｏｌ Ｕｎｉｔ））と、を備える。制御部１１は、ＣＰＵ（Ｃｅｎｔｒａｌ Ｐｒｏｃｅｓｓｉｎｇ Ｕｎｉｔ）と、メモリ（例えば、ＲＯＭ（Ｒｅａｄ Ｏｎｌｙ Ｍｅｍｏｒｙ）、ＲＡＭ（Ｒａｎｄｏｍ Ａｃｃｅｓｓ Ｍｅｍｏｒｙ））等、を備えている。制御部１１は、調光部材７の透過率を制御し、かつ発光部９の照度を制御する。乗物用調光システム１は、室内の所定対象物の情報を取得する情報取得部１５を備える。制御部１１は、情報取得部１５と、有線又は無線で情報通信可能とされている。制御部１１は、調光部材７及び発光部９と、有線又は無線で情報通信可能とされている。
なお、図示は省略したが、運転手等の乗員からの操作を受け付ける操作キー、操作ボタン等の操作入力部も備えることができる。 An embodiment of the vehicle 3 including the vehicle dimming system 1 of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic view of a vehicle 3 equipped with a vehicle dimming system 1 as viewed from above vertically. FIG. 2 is a block diagram showing the overall configuration of the vehicle dimming system 1.
The vehicle dimming system 1 includes an incident portion 5 on which external light is incident, a dimming member 7 arranged on the incident portion 5, a light emitting unit 9 provided in the room of the vehicle 3, and a control unit 11 (ECU (ECU). (Electronic Control Unit)) and. The control unit 11 includes a CPU (Central Processing Unit), a memory (for example, a ROM (Read Only Memory), a RAM (Random Access Memory)), and the like. The control unit 11 controls the transmittance of the dimming member 7 and controls the illuminance of the light emitting unit 9. The vehicle dimming system 1 includes an information acquisition unit 15 that acquires information on a predetermined object in the room. The control unit 11 is capable of communicating information with the information acquisition unit 15 by wire or wirelessly. The control unit 11 is capable of communicating information with the dimming member 7 and the light emitting unit 9 by wire or wirelessly.
Although not shown, an operation input unit such as an operation key or an operation button for receiving an operation from an occupant such as a driver can also be provided.

乗物３には、座席ＳＳ１、ＳＳ２、ＳＳ３、ＳＳ４が設けられている。座席ＳＳ１は運転席とされている。座席ＳＳ１の搭乗者が、乗物３の運転手となる。
外部光が入射する入射部５は、具体的には、運転席側の前席サイドウインドウ５Ａ、運転席側の後席サイドウインドウ５Ｂ、助手席側の前席サイドウインドウ５Ｃ、助手席側の後席サイドウインドウ５Ｄ、フロントウインドウ５Ｅ、及びリアウインドウ５Ｆとされている。なお、入射部５として、ルーフウインドウ（図示せず）を備えていてもよい。 The vehicle 3 is provided with seats SS1, SS2, SS3, and SS4. Seat SS1 is the driver's seat. The passenger in seat SS1 is the driver of vehicle 3.
Specifically, the incident portion 5 on which the external light is incident includes the front seat side window 5A on the driver's seat side, the rear seat side window 5B on the driver's seat side, the front seat side window 5C on the passenger seat side, and the rear passenger seat side. The seat side window 5D, the front window 5E, and the rear window 5F. A roof window (not shown) may be provided as the incident portion 5.

調光部材７は、前席サイドウインドウ５Ａ、後席サイドウインドウ５Ｂ、前席サイドウインドウ５Ｃ、助手席側の後席サイドウインドウ５Ｄ、フロントウインドウ５Ｅ、及びリアウインドウ５Ｆのほぼ全面にそれぞれ配置されている。
より具体的には、前席サイドウインドウ５Ａ、後席サイドウインドウ５Ｂ、前席サイドウインドウ５Ｃ、助手席側の後席サイドウインドウ５Ｄ、フロントウインドウ５Ｅ、及びリアウインドウ５Ｆを構成する透明板材としての一例であるガラス板に、車内側から調光部材７が貼り付けられている。なお、調光部材７は、車外側より貼り付けられてもよく、また、各ウインドウの合わせガラスのガラス板間に中間膜を介して挟持されてもよい。 The dimming member 7 is arranged on almost the entire surface of the front seat side window 5A, the rear seat side window 5B, the front seat side window 5C, the passenger seat side rear seat side window 5D, the front window 5E, and the rear window 5F, respectively. There is.
More specifically, an example as a transparent plate material constituting the front seat side window 5A, the rear seat side window 5B, the front seat side window 5C, the passenger seat side rear seat side window 5D, the front window 5E, and the rear window 5F. A dimming member 7 is attached to the glass plate, which is the same as the inside of the vehicle. The dimming member 7 may be attached from the outside of the vehicle, or may be sandwiched between the glass plates of the laminated glass of each window via an interlayer film.

調光部材７は、図３に示されるように、第１電極２１と第２電極２３との間に調光フィルム２５が配置され、第１電極２１と第２電極２３との間に加えられた電圧によって透過率を変化させるものが例示される。例えば、調光部材７は、図４の左図に示すように印加時には透明又は高透過率となり、図４の右図に示すように非印加時には不透明又は低透過率となる。
調光フィルム２５として、（１）ＥＣ方式（Ｅｌｅｃｔｒｏ ｃｈｒｏｍｉｃ）を用いた調光フィルム２５、（２）ＳＰＤ方式（Ｓｕｓｐｅｎｄｅｄ Ｐａｒｔｉｃｌｅ Ｄｅｖｉｃｅ）を用いた調光フィルム２５、（３）ＶＡ（Ｖｉｒｔｉｃａｌ Ａｌｉｇｎｍｅｎｔ）方式、ＴＮ（Ｔｗｉｓｔｅｄ Ｎｅｍａｔｉｃ）方式、ＩＰＳ（Ｉｎ−Ｐｌａｃｅ−Ｓｗｉｔｃｈｉｎｇ）方式の液晶を用いた調光フィルム２５が好適に例示される。
なお、ＥＣ方式を用いた調光フィルム２５は、一対の電極で調光層（電解質層）を挟んだ構造を有する。電極間の電位差に応じ、酸化還元反応を利用して調光層の色が透明と濃紺との間で変化する。
ＳＰＤ方式を用いた調光フィルム２５は、微粒子の配向を利用し、通常濃紺色に着色しているが、電圧をかけると透明に変化し、電圧を切ると元の濃紺色に戻るものであり、電圧によって濃淡を調整できる。
また、ＰＤＬＣ（Ｐｏｌｙｍｅｒ Ｄｉｓｐｅｒｓｅｄ Ｌｉｑｕｉｄ Ｃｒｙｓｔａｌ）方式を用いた調光フィルム２５を用いてもよい。ＰＤＬＣ方式を用いた調光フィルム２５は、液晶層中に特殊なポリマーによるネットワーク構造体を形成させたもので、ポリマーネットワークの作用により、液晶分子の配列が不規則な状態を誘起して光を散乱させる。そして、電圧を印加することで、液晶分子を電界方向に配列させると、光が散乱されず、透明な状態となる。 As shown in FIG. 3, the light control member 7 has a light control film 25 arranged between the first electrode 21 and the second electrode 23, and is added between the first electrode 21 and the second electrode 23. An example is one in which the transmittance is changed by the applied voltage. For example, the dimming member 7 becomes transparent or has a high transmittance when applied as shown in the left figure of FIG. 4, and becomes opaque or has a low transmittance when not applied as shown in the right figure of FIG.
As the light control film 25, (1) a light control film 25 using an EC method (Electro chromatic), (2) a light control film 25 using a SPD method (Suspended Particule Device), and (3) a VA (Virtual Element) method. , TN (Twisted Nematic) type, IPS (In-Place-Switching) type liquid crystal light control film 25 is preferably exemplified.
The light control film 25 using the EC method has a structure in which a light control layer (electrolyte layer) is sandwiched between a pair of electrodes. Depending on the potential difference between the electrodes, the color of the light control layer changes between transparent and navy blue using the redox reaction.
The light control film 25 using the SPD method is usually colored in dark blue by using the orientation of fine particles, but changes to transparent when a voltage is applied and returns to the original dark blue when the voltage is turned off. , The shade can be adjusted by the voltage.
Further, the light control film 25 using the PDLC (Polymer Dispersed Liquid Crystal) method may be used. The light control film 25 using the PDLC method has a network structure made of a special polymer formed in the liquid crystal layer, and the action of the polymer network induces an irregular arrangement of liquid crystal molecules to emit light. Scatter. Then, when the liquid crystal molecules are arranged in the electric field direction by applying a voltage, the light is not scattered and becomes a transparent state.

情報取得部１５は、所定対象物の情報を取得する各種センサからなるセンサ群より構成されている。所定対象物としては、乗員、室内の各種部材が例示される。情報としては、特に限定されないが、所定対象物の明るさ、所定対象物の温度、まばたき回数、目の瞳孔の径が、好適に例示される。
センサ群には、音声を認識するためのマイク１５Ａ、室内の画像情報を取得するカメラ１５Ｂ等が含まれている。マイク１５Ａは、各乗員の個別の音声を識別して取得する機能を有している。カメラ１５Ｂは、対象物の状態をセンシング可能に構成されている。 The information acquisition unit 15 is composed of a sensor group including various sensors that acquire information on a predetermined object. Examples of the predetermined object include an occupant and various members in the room. The information is not particularly limited, but preferably examples include the brightness of the predetermined object, the temperature of the predetermined object, the number of blinks, and the diameter of the pupil of the eye.
The sensor group includes a microphone 15A for recognizing voice, a camera 15B for acquiring image information in a room, and the like. The microphone 15A has a function of identifying and acquiring individual voices of each occupant. The camera 15B is configured to be capable of sensing the state of the object.

制御部１１は、マイク１５Ａにより取得された音声情報、カメラ１５Ｂにより取得された画像情報等の入力データに基づいて演算を行い調光部材７の透過率を調整し、かつ、発光部９の照度や照射範囲２７を調整する制御を行う。ＲＡＭ（演算領域）は、制御部１１での一時的な演算データを保存する領域である。 The control unit 11 performs calculations based on input data such as voice information acquired by the microphone 15A and image information acquired by the camera 15B to adjust the transmittance of the dimming member 7, and the illuminance of the light emitting unit 9. And control to adjust the irradiation range 27. The RAM (calculation area) is an area for storing temporary calculation data in the control unit 11.

発光部９は、発光の光色、照度、色温度、コントラスト、照射範囲２７を調節可能な光源を備える発光ユニットであり、車室内の照明等のために用いられている。発光部９の数は特に問わず、１又は２以上とすることができる。
発光部９は、可視光（例えば波長３８０ｎｍ〜７５０ｎｍ）の他、以下の光色の光を出すことができる。光色としては、例えば、波長３８０ｎｍ〜４５０ｎｍに属する光色（紫）、波長４５０ｎｍ〜４９５ｎｍに属する光色（青）、波長４９０ｎｍ〜５７０ｎｍに属する光色（緑）、波長５７０ｎｍ〜５９０ｎｍに属する光色（黄）、波長５９０ｎｍ〜６２０ｎｍに属する光色（橙）、波長６２０ｎｍ〜７５０ｎｍに属する光色（赤）を例示できる。 The light emitting unit 9 is a light emitting unit including a light source capable of adjusting the light color, illuminance, color temperature, contrast, and irradiation range 27 of the light emission, and is used for lighting the interior of a vehicle. The number of light emitting units 9 is not particularly limited and may be 1 or 2 or more.
The light emitting unit 9 can emit light of the following light colors in addition to visible light (for example, a wavelength of 380 nm to 750 nm). Examples of the light color include a light color belonging to a wavelength of 380 nm to 450 nm (purple), a light color belonging to a wavelength of 450 nm to 495 nm (blue), a light color belonging to a wavelength of 490 nm to 570 nm (green), and a light color belonging to a wavelength of 570 nm to 590 nm. Examples thereof include a color (yellow), a light color belonging to a wavelength of 590 nm to 620 nm (orange), and a light color belonging to a wavelength of 620 nm to 750 nm (red).

発光部９において調整される発光の照度とは、物体の表面を照らす光の明るさを表す物理量でありルクスで表される。例えば相対的に明るい高照度（高ルクス）から暗い低照度（低ルクス）の範囲で物理量毎に段階的に調整される。
発光部９において調整される発光の色温度とは、光源が発している光の色を定量的な数値で表現する尺度であり熱力学的温度のＫ（ケルビン）で表される。例えば相対的に温かみのある電球色から温白色、白色、昼白色、昼光色等の種類の中から調整される。
発光部９において調整されるコントラストとは、照明における明暗比であり、例えば相対的に明暗がはっきりした高コントラストから明暗がぼやけた低コントラストまで数値毎に段階的に調整される。
発光部９において調整される照射範囲２７（照射エリア）とは、図５に示すように、発光部９で光を照射する範囲のこという。照射範囲２７は、スポットライトのような狭面積のものから広い範囲で光が行き渡る広面積の範囲まで段階的に調整される。例えば、照射範囲２７は、食事の際に広くするように調整できる。また、読書の際には、本周辺部のみに照射するスポットライトを採用できる。 The illuminance of light emission adjusted by the light emitting unit 9 is a physical quantity representing the brightness of light illuminating the surface of an object and is represented by lux. For example, it is adjusted stepwise for each physical quantity in the range of relatively bright high illuminance (high lux) to dark low illuminance (low lux).
The color temperature of light emission adjusted by the light emitting unit 9 is a scale for expressing the color of light emitted by a light source by a quantitative numerical value, and is represented by K (Kelvin) of thermodynamic temperature. For example, it is adjusted from a relatively warm light bulb color to a warm white color, a white color, a neutral white color, a daylight color, and the like.
The contrast adjusted in the light emitting unit 9 is a light-dark ratio in lighting, and is adjusted stepwise for each numerical value, for example, from a high contrast in which the light and darkness is relatively clear to a low contrast in which the light and darkness is blurred.
The irradiation range 27 (irradiation area) adjusted by the light emitting unit 9 means a range in which light is irradiated by the light emitting unit 9 as shown in FIG. The irradiation range 27 is adjusted stepwise from a narrow area such as a spotlight to a wide area where light is distributed over a wide range. For example, the irradiation range 27 can be adjusted to be widened during meals. In addition, when reading, a spotlight that illuminates only the peripheral part of the book can be adopted.

発光部９として、例えば光色、照度、色温度、コントラスト、照射範囲２７を一定範囲で調節可能なＬＥＤ等を用いることができる。また、発光部９は、それぞれ発光色の異なる複数の光源及びその駆動手段を備えて構成することもできる。具体的な例として、各光源を、それぞれ発光色が赤、緑及び青色であるＬＥＤ素子とすることができる。発光部９として発光色の異なる光源を複数備える場合には、各光源の混合比により光色を変化させることができる。 As the light emitting unit 9, for example, an LED whose light color, illuminance, color temperature, contrast, and irradiation range 27 can be adjusted in a certain range can be used. Further, the light emitting unit 9 may be configured to include a plurality of light sources having different emission colors and driving means thereof. As a specific example, each light source can be an LED element whose emission colors are red, green, and blue, respectively. When a plurality of light sources having different emission colors are provided as the light emitting unit 9, the light color can be changed depending on the mixing ratio of each light source.

発光部９において、光源の駆動手段は、発光の光色、照度、色温度、コントラスト、照射範囲２７を光源に指示するために制御部１１から送られた発光制御信号に基づいて、各光源を駆動するように構成できる。駆動方式は特に問わず、例えばＰＷＭ（パルス幅変調）方式を採用することができる。ＰＷＭ信号を用いる場合、その周波数及びデューティ比によって各光源の駆動電力を制御することができる。駆動手段には、使用する光源の種類や構造、特性等により、所望の光色、照度、色温度、コントラスト、照射範囲２７が得られるように、各光源に対する供給電力を補正する機能を備えることが可能である。 In the light emitting unit 9, the driving means of the light source sets each light source based on the light emission control signal sent from the control unit 11 to instruct the light source of the light color, illuminance, color temperature, contrast, and irradiation range 27 of the light emission. Can be configured to drive. The drive method is not particularly limited, and for example, a PWM (pulse width modulation) method can be adopted. When a PWM signal is used, the drive power of each light source can be controlled by its frequency and duty ratio. The driving means is provided with a function of correcting the power supply to each light source so that a desired light color, illuminance, color temperature, contrast, and irradiation range 27 can be obtained according to the type, structure, characteristics, etc. of the light source used. Is possible.

図６は、乗物用調光システム１の処理手順の一例を示すフローチャートである。この動作プログラムは、制御部１１内のＲＯＭに格納されており、ＣＰＵによって実行される。
マイク１５Ａから入力された音声が、乗物用調光システム１の起動指示であると判断される場合（ステップＳ１：ＹＥＳ）には、乗物用調光システム１が起動される。
制御部１１は、カメラ１５Ｂによって取得された情報に基づいて、調光部材７の透過率を調整し、かつ、発光部９の照度を調整する。
詳細には、次のように、調光部材７の透過率と、発光部９の照度を調整する。まず、制御部１１は、カメラ１５Ｂによって取得された乗員の顔の温度、乗員の顔の明るさ、乗員の目のまばたき回数、乗員の目の瞳孔の径等の情報（以下、「所定情報」ともいう。）から、室内の明るさが所定の第１閾値（下限値）より低いか否かを判断する（ステップＳ２）。
制御部１１は、所定情報から、室内の明るさが第１閾値よりも低いと判断する場合（ステップＳ２：ＹＥＳ）には、発光部９の照度を現状よりも高くする処理１を行う（ステップＳ３）。なお、発光部９をオフ状態からオン状態にすることは、照度が０から上昇することになるから、「発光部９の照度を現状よりも高くする処理１」に含まれる。
他方、所定情報から、室内の明るさが第１閾値以上と判断する場合（ステップＳ２：ＮＯ）には、制御部１１は、所定情報から、室内の明るさが所定の第２閾値（上限値）より高いか否かを判断する（ステップＳ４）。制御部１１は、所定情報から、室内の明るさが第２閾値よりも高いと判断する場合（ステップＳ４：ＹＥＳ）には、調光部材７の透過率を現状よりも低下させる処理２を行う（ステップＳ５）。
第１閾値と第２閾値との大小関係は、第１閾値＜第２閾値である。第１閾値と第２閾値は、乗員が任意に設定できるようにしてもよい。 FIG. 6 is a flowchart showing an example of the processing procedure of the vehicle dimming system 1. This operation program is stored in the ROM in the control unit 11 and executed by the CPU.
When it is determined that the voice input from the microphone 15A is an activation instruction of the vehicle dimming system 1 (step S1: YES), the vehicle dimming system 1 is activated.
The control unit 11 adjusts the transmittance of the dimming member 7 and adjusts the illuminance of the light emitting unit 9 based on the information acquired by the camera 15B.
Specifically, the transmittance of the dimming member 7 and the illuminance of the light emitting unit 9 are adjusted as follows. First, the control unit 11 provides information such as the temperature of the occupant's face, the brightness of the occupant's face, the number of blinks of the occupant's eyes, and the diameter of the pupil of the occupant's eyes acquired by the camera 15B (hereinafter, "predetermined information"). From (also referred to as)), it is determined whether or not the brightness of the room is lower than the predetermined first threshold value (lower limit value) (step S2).
When the control unit 11 determines from the predetermined information that the brightness of the room is lower than the first threshold value (step S2: YES), the control unit 11 performs the process 1 of increasing the illuminance of the light emitting unit 9 to be higher than the current state (step S2: YES). S3). It should be noted that turning the light emitting unit 9 from the off state to the on state means that the illuminance rises from 0, and is therefore included in "process 1 for increasing the illuminance of the light emitting unit 9 from the current state".
On the other hand, when it is determined from the predetermined information that the indoor brightness is equal to or higher than the first threshold value (step S2: NO), the control unit 11 determines from the predetermined information that the indoor brightness is the predetermined second threshold value (upper limit value). ) It is determined whether or not it is higher (step S4). When the control unit 11 determines from the predetermined information that the brightness of the room is higher than the second threshold value (step S4: YES), the control unit 11 performs the process 2 of lowering the transmittance of the dimming member 7 from the current state. (Step S5).
The magnitude relationship between the first threshold value and the second threshold value is <first threshold value <second threshold value. The first threshold value and the second threshold value may be arbitrarily set by the occupant.

なお、複数の乗員が乗っている場合に、カメラ１５Ｂは、複数の乗員の個々の個別情報を取得し、制御部１１は、乗員の個々の所定エリアの明るさが、それぞれ所定照度になるように、調光部材７の透過率を調整し、かつ、発光部９の照度を調整してもよい。このような調整は、例えば、前席サイドウインドウ５Ａ、後席サイドウインドウ５Ｂ、前席サイドウインドウ５Ｃ、助手席側の後席サイドウインドウ５Ｄ、フロントウインドウ５Ｅ、及びリアウインドウ５Ｆの透過率を個別に調整するとともに、発光部９を複数設置して、各発光部９の照度を個別に調整することで実現できる。ここで、乗員の個々の所定エリアとは、例えば、顔、手元、足元等である。 When a plurality of occupants are on board, the camera 15B acquires individual individual information of the plurality of occupants, and the control unit 11 sets the brightness of each predetermined area of the occupants to a predetermined illuminance. In addition, the transmittance of the dimming member 7 may be adjusted, and the illuminance of the light emitting unit 9 may be adjusted. For such adjustment, for example, the transmittance of the front seat side window 5A, the rear seat side window 5B, the front seat side window 5C, the passenger seat side rear seat side window 5D, the front window 5E, and the rear window 5F are individually adjusted. This can be achieved by adjusting and installing a plurality of light emitting units 9 and individually adjusting the illuminance of each light emitting unit 9. Here, the individual predetermined areas of the occupants are, for example, the face, hands, feet, and the like.

以上のように、乗物用調光システム１は、調光部材７の透過率を制御しつつ、発光部９の照度を制御するから、乗物３の室内の明るさを昼夜問わずに調整できる。
また、乗物用調光システム１は、乗員の情報に基づいて明るさが調整されるから、より適切な調光をすることができる。
また、制御部１１は、乗員の状態が、室内の明るさが予め定められた第１閾値よりも低く、暗いことに起因して生じている状態であると判断される場合には、発光部９の照度を現状よりも高くするように制御する。例えば、室内が暗すぎて食事、読書等の乗員が望む行動をしようとしても、視界が悪く、行動しにくい状態の場合に、発光部９の照度が現状よりも高くなるから、乗員が快適に行動できるようになる。
他方、制御部１１は、乗員の状態が、室内の明るさが予め定められた第２閾値よりも高く、明るすぎることに起因して生じていると判断される場合には、調光部材７の透過率を現状よりも低下させるように制御する。例えば、室内が明るすぎて乗員のまばたき回数が多い状態や、外部光が強すぎて乗員の温度が高くなっている状態の場合に、調光部材７の透過率を現状よりも低下するから、乗員が快適に過ごせるようになる。
情報が、所定対象物の明るさ、所定対象物の温度、まばたき回数、及び目の瞳孔の径からなる群から選択される少なくとも１つである場合には、これらのパラメータがより望ましくなるように、明るさをコントロールできるから、乗員がより快適に過ごせるようになる。
複数の乗員が乗っている場合に、カメラ１５Ｂは、複数の乗員の個々の個別情報を取得し、制御部１１は、乗員の個々の所定エリアの明るさが、それぞれ所定照度になるように、調光部材７の透過率を調整し、かつ、発光部９の照度を調整する場合には、個々の乗員に対して、それぞれ明るさを最適化できる。 As described above, since the vehicle dimming system 1 controls the illuminance of the light emitting unit 9 while controlling the transmittance of the dimming member 7, the indoor brightness of the vehicle 3 can be adjusted day and night.
Further, since the brightness of the vehicle dimming system 1 is adjusted based on the information of the occupant, more appropriate dimming can be performed.
Further, the control unit 11 emits light when it is determined that the occupant's state is caused by the darkness of the room, which is lower than the predetermined first threshold value. The illuminance of 9 is controlled to be higher than the current state. For example, even if the room is too dark and the occupant tries to perform the desired behavior such as eating or reading, the illuminance of the light emitting unit 9 becomes higher than the current state when the visibility is poor and it is difficult for the occupant to act, so that the occupant is comfortable. You will be able to act.
On the other hand, when the control unit 11 determines that the occupant's condition is caused by the brightness of the room being higher than the predetermined second threshold value and being too bright, the light control member 7 The transmittance of the light is controlled to be lower than the current level. For example, when the room is too bright and the occupant blinks frequently, or when the outside light is too strong and the occupant's temperature is high, the transmittance of the dimming member 7 is lower than the current state. The occupants will be able to spend their time comfortably.
These parameters are more desirable when the information is at least one selected from the group consisting of the brightness of the predetermined object, the temperature of the predetermined object, the number of blinks, and the diameter of the pupil of the eye. Since the brightness can be controlled, the occupants can spend more comfortably.
When a plurality of occupants are on board, the camera 15B acquires individual individual information of the plurality of occupants, and the control unit 11 sets the brightness of each predetermined area of the occupants to a predetermined illuminance. When adjusting the transmittance of the dimming member 7 and adjusting the illuminance of the light emitting unit 9, the brightness can be optimized for each occupant.

前述の例は単に説明を目的とするものでしかなく、本発明を限定するものと解釈されるものではない。本発明を典型的な実施形態の例を挙げて説明したが、本発明の記述及び図示において使用された文言は、限定的な文言ではなく説明的及び例示的なものであると理解される。ここで詳述したように、その形態において本発明の範囲又は本質から逸脱することなく、添付の特許請求の範囲内で変更が可能である。ここでは、本発明の詳述に特定の構造、材料及び実施例を参照したが、本発明をここにおける開示事項に限定することを意図するものではなく、むしろ、本発明は添付の特許請求の範囲内における、機能的に同等の構造、方法、使用の全てに及ぶものとする。 The above examples are for illustration purposes only and are not to be construed as limiting the invention. Although the present invention has been described with reference to typical embodiments, the wording used in the description and illustration of the present invention is understood to be descriptive and exemplary rather than limiting wording. As described in detail here, modifications can be made within the scope of the appended claims without departing from the scope or nature of the invention in that form. Although specific structures, materials and examples have been referred to herein in detail of the invention, it is not intended to limit the invention to the disclosures herein, but rather the invention is claimed in the accompanying claims. It shall cover all functionally equivalent structures, methods and uses within the scope.

本発明は上記で詳述した実施形態に限定されず、本発明の請求項に示した範囲で様々な変形又は変更が可能である。
（１）上記実施形態では、乗物３として車両（自動車）を例示したが、その他にも地上の乗物３としての列車や遊戯用車両、飛行用乗物としての飛行機やヘリコプター、海上や海中用乗物としての船舶や潜水艇などの乗物３についても乗物用調光システム１を適用することができる。
（２）上記実施形態では、乗物３の天井面にセンサ群より構成された情報取得部１５が配置されている例を示したが、情報取得部１５の設置場所は特に限定されない。また、複数のセンサを別々に異なる場所に配置することもできる。
（３）上記実施形態では、乗物３の天井面に発光部９が配置されている例を示したが、発光部９の設置場所は特に限定されない。
（４）上記実施形態では、発光部９が２つの例を示したが、発光部９の数は適宜変更可能である。
（５）上記実施形態では、所定対象物が乗員の例を示したが、所定対象物は適宜変更可能である。例えば、所定対象物をシート、フロア等の室内の部品としてもよい。
（６）上記実施形態では、マイク１５Ａから入力された音声によって、乗物用調光システム１が起動されることとしたが、乗物用調光システム１の起動方法は特に限定されない。例えば、乗員がスイッチ等の操作部を操作することで、乗物用調光システム１が起動されるようにしてもよい。 The present invention is not limited to the embodiments detailed above, and various modifications or modifications can be made within the scope of the claims of the present invention.
(1) In the above embodiment, a vehicle (automobile) is illustrated as a vehicle 3, but in addition, as a train or amusement vehicle as a ground vehicle 3, an airplane or helicopter as a flight vehicle, or a marine or underwater vehicle. The vehicle dimming system 1 can also be applied to a vehicle 3 such as a ship or a submersible.
(2) In the above embodiment, an example in which the information acquisition unit 15 composed of the sensor group is arranged on the ceiling surface of the vehicle 3 is shown, but the installation location of the information acquisition unit 15 is not particularly limited. It is also possible to arrange a plurality of sensors separately at different locations.
(3) In the above embodiment, an example in which the light emitting unit 9 is arranged on the ceiling surface of the vehicle 3 is shown, but the installation location of the light emitting unit 9 is not particularly limited.
(4) In the above embodiment, two light emitting units 9 are shown, but the number of light emitting units 9 can be changed as appropriate.
(5) In the above embodiment, the predetermined object is an example of an occupant, but the predetermined object can be changed as appropriate. For example, the predetermined object may be an indoor part such as a seat or a floor.
(6) In the above embodiment, the vehicle dimming system 1 is activated by the voice input from the microphone 15A, but the activation method of the vehicle dimming system 1 is not particularly limited. For example, the vehicle dimming system 1 may be activated by the occupant operating an operation unit such as a switch.

１ …乗物用調光システム
３ …乗物
５ …入射部
５Ａ …前席サイドウインドウ
５Ｂ …後席サイドウインドウ
５Ｃ …前席サイドウインドウ
５Ｄ …後席サイドウインドウ
５Ｅ …フロントウインドウ
５Ｆ …リアウインドウ
７ …調光部材
９ …発光部
１１ …制御部
１５ …情報取得部
１５Ａ…マイク
１５Ｂ…カメラ
２１ …第１電極
２３ …第２電極
２５ …調光フィルム
２７ …照射範囲
ＳＳ１…座席
ＳＳ２…座席
ＳＳ３…座席
ＳＳ４…座席 1 ... Vehicle dimming system 3 ... Vehicle 5 ... Incident part 5A ... Front seat side window 5B ... Rear seat side window 5C ... Front seat side window 5D ... Rear seat side window 5E ... Front window 5F ... Rear window 7 ... Dimming Member 9 ... Light emitting unit 11 ... Control unit 15 ... Information acquisition unit 15A ... Mike 15B ... Camera 21 ... First electrode 23 ... Second electrode 25 ... Dimming film 27 ... Irradiation range SS1 ... Seat SS2 ... Seat SS3 ... Seat SS4 ... seat

Claims (5)

乗物用調光システムであって、
外部光が入射する入射部と、
前記入射部に配された調光部材と、
乗物の室内に設けられた発光部と、
前記調光部材の透過率を制御し、かつ前記発光部の照度を制御する制御部と、を備える乗物用調光システム。 A dimming system for vehicles
The incident part where external light is incident and
The dimming member arranged in the incident part and
The light emitting part provided in the room of the vehicle and
A vehicle dimming system including a control unit that controls the transmittance of the dimming member and controls the illuminance of the light emitting unit. 更に、室内の所定対象物の情報を取得する情報取得部を、備え、
前記制御部は、前記情報取得部によって取得された前記情報に基づいて、前記調光部材の前記透過率を調整し、かつ、前記発光部の照度を調整する請求項１に記載の乗物用調光システム。 Further, an information acquisition unit for acquiring information on a predetermined object in the room is provided.
The vehicle adjustment according to claim 1, wherein the control unit adjusts the transmittance of the dimming member and adjusts the illuminance of the light emitting unit based on the information acquired by the information acquisition unit. Optical system. 前記制御部は、前記情報から得られる前記所定対象物の状態が、前記室内の明るさが予め定められた第１閾値よりも低いことに起因して生じている状態であると判断される場合には、前記発光部の照度を現状よりも高くするように制御し、
前記情報から得られる前記所定対象物の状態が、前記室内の明るさが予め定められた第２閾値よりも高いことに起因して生じていると判断される場合には、前記調光部材の前記透過率を現状よりも低下させるように制御する請求項２に記載の乗物用調光システム。 When the control unit determines that the state of the predetermined object obtained from the information is caused by the brightness of the room being lower than a predetermined first threshold value. The illuminance of the light emitting unit is controlled to be higher than the current level.
When it is determined that the state of the predetermined object obtained from the information is caused by the brightness of the room being higher than a predetermined second threshold value, the dimming member The vehicle dimming system according to claim 2, wherein the transmittance is controlled to be lower than the current level. 前記情報が、前記所定対象物の明るさ、前記所定対象物の温度、まばたき回数、及び目の瞳孔の径からなる群から選択される少なくとも１つである請求項２又は３に記載の乗物用調光システム。 The vehicle according to claim 2 or 3, wherein the information is at least one selected from the group consisting of the brightness of the predetermined object, the temperature of the predetermined object, the number of blinks, and the diameter of the pupil of the eye. Dimming system. 前記所定対象物は、複数の乗員であり、
前記情報取得部は、複数の前記乗員の個々の個別情報を取得し、
前記制御部は、前記乗員の個々の所定エリアの明るさが、それぞれ所定照度になるように、前記調光部材の前記透過率を調整し、かつ、前記発光部の照度を調整する請求項２〜４のいずれか１項に記載の乗物用調光システム。 The predetermined object is a plurality of occupants.
The information acquisition unit acquires individual individual information of the plurality of occupants, and obtains individual information.
2. The control unit adjusts the transmittance of the dimming member and adjusts the illuminance of the light emitting unit so that the brightness of each predetermined area of the occupant becomes a predetermined illuminance. The vehicle dimming system according to any one of Items to 4.
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