JP2003159942A - Sun visor for vehicle - Google Patents

Sun visor for vehicle

Info

Publication number
JP2003159942A
JP2003159942A JP2001402144A JP2001402144A JP2003159942A JP 2003159942 A JP2003159942 A JP 2003159942A JP 2001402144 A JP2001402144 A JP 2001402144A JP 2001402144 A JP2001402144 A JP 2001402144A JP 2003159942 A JP2003159942 A JP 2003159942A
Authority
JP
Japan
Prior art keywords
light
liquid crystal
driver
crystal film
sun visor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2001402144A
Other languages
Japanese (ja)
Other versions
JP2003159942A5 (en
JP3688637B2 (en
Inventor
Motoi Noba
基 野場
Shunichi Ogawa
俊一 小川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Noba Denkoh Co Ltd
Original Assignee
Noba Denkoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Noba Denkoh Co Ltd filed Critical Noba Denkoh Co Ltd
Priority to JP2001402144A priority Critical patent/JP3688637B2/en
Publication of JP2003159942A publication Critical patent/JP2003159942A/en
Publication of JP2003159942A5 publication Critical patent/JP2003159942A5/ja
Application granted granted Critical
Publication of JP3688637B2 publication Critical patent/JP3688637B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Liquid Crystal (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sun visor for a vehicle, which automatically functions as a glare shield when a driver feels the dazzling of light from the sun settling in a descended position or turns a steering wheel freely. <P>SOLUTION: A crystal liquid film is attached to the front window of a vehicle. A light sensor providing a visual angle relatively matching that of the driver is fitted to a room mirror, where the light sensor detects a light source, such as the sun light, that causes the driver dazzling. The whole of the liquid crystal film is separated into a plurality of areas based on a signal produced by the sensor detection, and the light permeability of each area can be changed according to an applied signal. Thus, when the liquid crystal film is driven, the light permeability of each area is changed according to the brightness of the outside or the incident direction of light, so that an optimum glare shielding is carried out. <P>COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】これは自動車用サンバイザ装置
(防眩装置)に関する。
This invention relates to an automobile sun visor device (anti-glare device).

【0002】[0002]

【従来の技術】従来、自動車のサンバイザ装置は不透明
の板状のものが運転席および助手席についています。運
転者は、太陽の光が眩しいときには、サンバイザを手で
動かして、太陽の光が自分の目に直接に当たらないよう
にしています。しかし、運転者がハンドルを切ると、光
の入射する位置が変わるので、そのたびごとに運転者は
サンバイザの位置を調整しなければなりません。これは
運転中にハンドルから一時手を離すこと、視線をサンバ
イザに移動するなどの危険な状況をもたらします。また
普通のサンバイザは完全に不透明で見えない等の欠点が
あります。
2. Description of the Related Art Conventionally, an opaque plate-shaped sun visor device for automobiles has been installed in the driver's seat and passenger seat. When the sun's rays are dazzling, the driver manually moves the sun visor to prevent the sun's rays from hitting his eyes directly. However, when the driver turns the steering wheel, the position of the incident light changes, so the driver must adjust the position of the sun visor each time. This can lead to dangerous situations, such as temporarily removing your hand from the wheel while driving and moving your line of sight to the sun visor. Ordinary sun visors have the drawback of being completely opaque and invisible.

【0003】[0003]

【発明が解決しようとする課題】本発明はこれらの欠点
を解決したものです。運転者が自由にハンドルを切って
も、フロントウィンドウに装着した液晶フィルムが即座
に対応し防眩する装置です。
The present invention solves these drawbacks. Even if the driver freely turns the steering wheel, the liquid crystal film attached to the front window immediately responds to the glare.

【0004】[0004]

【課題を解決するための手段】本発明は、フロントウィ
ンドウに液晶フィルムを貼付あるいは封入します。また
ルームミラーあるいはフロントダッシュボード、ヘッド
レスト、などに取り付けた光センサによって、運転者の
目に入る光と相似した光を検出します。この検出した信
号をもとに液晶フィルムコントローラにより液晶フィル
ムの各部の光の透過率を自動的に可変します。このよう
に運転者は一時も手をハンドルから離すことなく容易に
各方向の視界を良好に保つことができます。
[Means for Solving the Problems] In the present invention, a liquid crystal film is attached or enclosed in the front window. In addition, a light sensor attached to the rearview mirror, front dashboard, headrest, etc. detects light similar to the light entering the driver's eyes. Based on this detected signal, the liquid crystal film controller automatically changes the light transmittance of each part of the liquid crystal film. In this way, the driver can easily maintain good visibility in each direction without having to take his hands off the steering wheel even once.

【0005】[0005]

【実施例】図1は本発明装置の構成図です。自動車のフ
ロントウィンドウ1の室内側に液晶フィルム2が貼付け
られています。太陽光3等の外光がフロントウィンドウ
1及び液晶フィルム2を通過して運転者4の目5に入り
ます。目5の垂直面の視角を2γとします。またルーム
ミラー6に取り付けられた光センサ7が外光を感知しま
す。センサの視角を2θとします。図2は光センサの構
成図です。光センサ7の入り口8の直径をdとします。
センシングユニットの光電面9は4分割されていて、そ
れぞれにフォトセンサー等の光電デバイス10、11,
12,13が設置されています。光電面9の半径a、光
電面9の入り口8からの距離をbとすると、a−bの値
から光センサ7の視角2θが計算されます。 a=d/2 tanθ=b/a ここで求めたθの2倍と前記2−γを一致させると、理
想的なセンサになります。θはbを調節することによっ
て自由に設定できます。同様な方法で水平面も求めま
す。図3は制御装置14のブロック図です。光電デバイ
ス10〜13の信号を演算器15に加え、必要な演算を
して、液晶フィルムコントローラ16へ指示します。図
3の<I+II+III+IV>演算は全体の平均透過
率をもとめています。また、<(I+II)−(III
+IV)>を演算すれば、光の上下の入射方向を判別で
きます。その他<(I+IV)−(II+III)>を
演算すれば、水平面の光の入射方向を判別できます。液
晶フィルムコントローラ16は上記演算結果を基に、液
晶フィルム2の各部の透過率を制御します。
[Embodiment] FIG. 1 is a block diagram of the device of the present invention. A liquid crystal film 2 is attached to the inside of the front window 1 of a car. Outside light such as sunlight 3 passes through the windshield 1 and the liquid crystal film 2 and enters the eyes 5 of the driver 4. The visual angle of the vertical plane of eye 5 is 2γ. An optical sensor 7 attached to the rearview mirror 6 detects outside light. The viewing angle of the sensor is 2θ. Figure 2 is a block diagram of the optical sensor. The diameter of the entrance 8 of the optical sensor 7 is d.
The photocathode 9 of the sensing unit is divided into four parts, each of which has a photoelectric device 10, 11, such as a photosensor,
12 and 13 are installed. If the radius of the photocathode 9 is a and the distance from the entrance 8 of the photocathode 9 is b, the viewing angle 2θ of the photosensor 7 is calculated from the value of ab. a = d / 2 tan θ = b / a By matching the value of θ obtained here with the value of 2-γ above, it becomes an ideal sensor. θ can be set freely by adjusting b. Use the same method to find the horizontal plane. Figure 3 is a block diagram of the controller 14. The signals from the photoelectric devices 10 to 13 are applied to the calculator 15 to perform necessary calculations and instruct the liquid crystal film controller 16. The <I + II + III + IV> calculation in Fig. 3 is based on the average average transmittance. In addition, <(I + II)-(III
By calculating + IV)>, the upper and lower incident directions of light can be determined. Others By calculating <(I + IV)-(II + III)>, the incident direction of light on the horizontal plane can be determined. The liquid crystal film controller 16 controls the transmittance of each part of the liquid crystal film 2 based on the above calculation result.

【0006】[0006]

【他の実施例1】ルームミラーの形状、あるいは本シス
テムを後付する場合、光センサ7をルームミラー6に取
り付けが困難な場合には図1のように上記の光センサ7
をフロントダッシュボード17にの取り付ける方法もあ
ります。
[Embodiment 1] The shape of the room mirror, or when the system is retrofitted and it is difficult to attach the optical sensor 7 to the room mirror 6, the optical sensor 7 as shown in FIG.
There is also a method of attaching the to the front dashboard 17.

【0007】[0007]

【他の実施例2】複数の光センサ7を図1のヘッドレス
ト18に配置すると、センサが運転者の目5の位置に近
くになるため光源3に対する検出精度が向上します。光
センサ7はヘッドレストの左右に配置します。運転者4
の頭部位置で一つのセンサへ入力が遮られた場合でも、
もう一方のセンサが機能してセンサ作動を正常に保つた
め、信頼性が向上します。
[Other Embodiment 2] When a plurality of optical sensors 7 are arranged on the headrest 18 of FIG. 1, the sensors are close to the position of the eyes 5 of the driver, so that the detection accuracy for the light source 3 is improved. The optical sensors 7 are placed on the left and right of the headrest. Driver 4
Even if the input to one sensor is blocked at the head position of
The other sensor works and keeps the sensor operating normally, improving reliability.

【0008】[0008]

【他の実施例3】前記液晶フィルムをフロントウィンド
ウの運転室内に貼付するだけでなく、予めフロントウィ
ンドウに封入することもできます。
[Other Embodiment 3] Not only can the liquid crystal film be attached to the driver's cab of the front window, but it can also be sealed in the front window in advance.

【0009】[0009]

【発明の効果】以上説明したように太陽の光等の外光が
運転者の目に入り運転者が眩しく感じるようななると、
自動的にフロントウィンドウに設置された液晶フィルム
の各部が最適な透過率となり、眩しさを減少させます。
防眩材質が液晶のためサンバイザを機械的に駆動するよ
りも高速に対応できます。さらに動作に伴う機械音を皆
無にできるため運転者に不快感を与えることはありませ
ん。また透過率も外光の大きさにより段階的に変化でき
るため外界の視認性を著しく損なうことなうこともあり
ません。その他光センサの位置を最適な位置に設置する
ことで、より高精度で信頼性の高い装置が出来ます。
As described above, when external light such as the sunlight comes into the eyes of the driver and the driver feels dazzling,
Each part of the liquid crystal film automatically installed in the front window will have the optimum transmittance and reduce glare.
Since the anti-glare material is liquid crystal, it can handle faster than mechanically driving the sun visor. Moreover, the mechanical noise that accompanies the operation can be completely eliminated, so that the driver will not be discomforted. In addition, the transmittance can be changed step by step depending on the size of the external light, so the visibility of the external environment is not significantly impaired. In addition, by installing the position of the optical sensor in the optimum position, a more accurate and highly reliable device can be made.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明装置の構成図です。FIG. 1 is a block diagram of the device of the present invention.

【図2】光センサの構成図です。[Fig.2] Configuration diagram of the optical sensor.

【図3】制御装置のブロック図です。[Fig. 3] Block diagram of the controller.

【符号の説明】[Explanation of symbols]

1;フロントウィンドウ、2;液晶フィルム、3;太陽
等の光源、4;運転者、5;運転者の目、6;ルームミ
ラー、7;光センサ、 8;光センサ入光部9;光セン
サ受光部、10、11,12,13;光電デバイス、1
4;制御装置、15;演算器、16液晶フィルムコント
ローラ、17;ダッシュボード; 18;ヘッドレスト
1; front window, 2; liquid crystal film, 3; light source such as the sun, 4; driver, 5; driver's eyes, 6; rearview mirror, 7; optical sensor, 8; optical sensor light entrance section 9; optical sensor Light receiving part 10, 11, 12, 13; Photoelectric device, 1
4; control device, 15; computing unit, 16 liquid crystal film controller, 17; dashboard; 18; headrest

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】自動車のフロントウィンドウに液晶フィル
ムを装着する。運転者の目の視角と相対的に適合した視
角を持った光センサを車室内に取り付ける。この光セン
サで太陽光などの眩しさの原因となる光源を検知する。
その検知信号をもとに液晶フィルムを駆動して、光源と
運転者の目との間の光の透過率を下げて防眩する自動用
サンバイザ装置。
1. A liquid crystal film is mounted on a front window of an automobile. An optical sensor having a viewing angle that is relatively compatible with the viewing angle of the driver's eyes is installed in the vehicle interior. This light sensor detects a light source such as sunlight that causes glare.
An automatic sun visor device that drives the liquid crystal film based on the detection signal to reduce the light transmittance between the light source and the driver's eyes to prevent glare.
【請求項2】前記液晶フィルム全体を複数個に分割し、
その各々が印可信号によって透過率を可変出来るように
して、外界の明るさや光の入射方向に応じて各部の透過
率を可変し、最適な防眩作用をすることを特徴とする請
求項1の自動用サンバイザ装置
2. The entire liquid crystal film is divided into a plurality of pieces,
The transmittance of each part can be varied according to the applied signal, and the transmittance of each part can be varied according to the brightness of the outside world and the incident direction of light to provide an optimum anti-glare action. Automatic sun visor device
【請求項3】前記光センサの受光面を複数のセルに分割
し、そのセル各々に光電デバイスを取り付け、そのデバ
イスの信号を演算処理することによって、前記液晶フィ
ルムを最適に制御することを特徴とする請求項1の自動
用サンバイザ装置。
3. The liquid crystal film is optimally controlled by dividing the light-receiving surface of the optical sensor into a plurality of cells, attaching a photoelectric device to each of the cells, and processing the signals of the device. The automatic sun visor device according to claim 1.
JP2001402144A 2001-11-26 2001-11-26 Sun visor device for automobile Expired - Lifetime JP3688637B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001402144A JP3688637B2 (en) 2001-11-26 2001-11-26 Sun visor device for automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001402144A JP3688637B2 (en) 2001-11-26 2001-11-26 Sun visor device for automobile

Publications (3)

Publication Number Publication Date
JP2003159942A true JP2003159942A (en) 2003-06-03
JP2003159942A5 JP2003159942A5 (en) 2004-10-28
JP3688637B2 JP3688637B2 (en) 2005-08-31

Family

ID=19189962

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001402144A Expired - Lifetime JP3688637B2 (en) 2001-11-26 2001-11-26 Sun visor device for automobile

Country Status (1)

Country Link
JP (1) JP3688637B2 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008089311A (en) * 2006-09-29 2008-04-17 Noba Denko Kk Solar radiation sensor
JP2009241812A (en) * 2008-03-31 2009-10-22 Murakami Corp Vehicle accessory
GB2475102A (en) * 2009-11-09 2011-05-11 Paul Slevin A vehicle windscreen with a liquid crystal light polarising layer
JP2012148675A (en) * 2011-01-19 2012-08-09 Stanley Electric Co Ltd Sun visor device
CN101607520B (en) * 2008-06-17 2012-11-14 联想(北京)有限公司 Shading system, automobile shading system and method
CN103985334A (en) * 2014-05-04 2014-08-13 京东方科技集团股份有限公司 Transparent display system and device with transparent display system
CN110573939A (en) * 2017-03-01 2019-12-13 思维奇材料公司 variable transmittance vehicle window
CN112789185A (en) * 2020-12-31 2021-05-11 华为技术有限公司 Digital automatic shading method and shading system for vehicle
EP4183606A1 (en) * 2021-11-22 2023-05-24 Volvo Construction Equipment AB A vehicle compartment with smart glass controlled by a light sensor

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014084064A1 (en) * 2012-11-28 2014-06-05 株式会社村田製作所 Automobile light amount adjustor
JP7043428B2 (en) * 2017-02-01 2022-03-29 林テレンプ株式会社 Vehicle visor device
CN111591111A (en) * 2020-06-22 2020-08-28 京东方科技集团股份有限公司 Shading board assembly, control method and control device thereof, and vehicle

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008089311A (en) * 2006-09-29 2008-04-17 Noba Denko Kk Solar radiation sensor
JP2009241812A (en) * 2008-03-31 2009-10-22 Murakami Corp Vehicle accessory
CN101607520B (en) * 2008-06-17 2012-11-14 联想(北京)有限公司 Shading system, automobile shading system and method
GB2475102A (en) * 2009-11-09 2011-05-11 Paul Slevin A vehicle windscreen with a liquid crystal light polarising layer
JP2012148675A (en) * 2011-01-19 2012-08-09 Stanley Electric Co Ltd Sun visor device
CN103985334A (en) * 2014-05-04 2014-08-13 京东方科技集团股份有限公司 Transparent display system and device with transparent display system
US9710059B2 (en) 2014-05-04 2017-07-18 Boe Technology Group Co., Ltd. Transparent display system and apparatus provided with the same
CN110573939A (en) * 2017-03-01 2019-12-13 思维奇材料公司 variable transmittance vehicle window
JP2020510572A (en) * 2017-03-01 2020-04-09 スイッチ マテリアルズ インコーポレイテッドSwitch Materials Inc. Vehicle windows with variable transmittance
JP7295801B2 (en) 2017-03-01 2023-06-21 ソルティア・カナダ・インコーポレーテッド Vehicle window with variable transmittance
CN112789185A (en) * 2020-12-31 2021-05-11 华为技术有限公司 Digital automatic shading method and shading system for vehicle
EP4183606A1 (en) * 2021-11-22 2023-05-24 Volvo Construction Equipment AB A vehicle compartment with smart glass controlled by a light sensor

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