JPH1051764A - On-vehicle display system - Google Patents
On-vehicle display systemInfo
- Publication number
- JPH1051764A JPH1051764A JP20554996A JP20554996A JPH1051764A JP H1051764 A JPH1051764 A JP H1051764A JP 20554996 A JP20554996 A JP 20554996A JP 20554996 A JP20554996 A JP 20554996A JP H1051764 A JPH1051764 A JP H1051764A
- Authority
- JP
- Japan
- Prior art keywords
- vehicle
- display
- polarization
- display device
- driver
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、車載用表示システ
ムに関し、特に、後続車両の運転者に眩惑作用を与えな
いようにして危険防止を図った車載用表示システムに関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle display system, and more particularly to an on-vehicle display system for preventing danger by not dazzling a driver of a following vehicle.
【０００２】[0002]
【従来の技術】最近、カーナビゲーションシステムを搭
載した車両の普及が目ざましい。また、ＴＶを搭載した
車両も多い。従来のこのような車載用表示装置（モノク
ロ及びカラー）は、表示画面から射出する表示光は専ら
当該車両の運転者及び同乗者の視認性向上を目的として
設計されており、周囲の明るさに対応して表示の明るさ
を調整する程度の機能はあるものの、後続車両に対する
眩惑作用に関しての配慮はされていなかった。2. Description of the Related Art Recently, vehicles equipped with a car navigation system have been remarkably popularized. In addition, many vehicles are equipped with a TV. In such conventional in-vehicle display devices (monochrome and color), the display light emitted from the display screen is designed solely for the purpose of improving the visibility of the driver and passengers of the vehicle, and the surrounding light is reduced. Although there is a function to adjust the brightness of the display correspondingly, no consideration has been given to the dazzling effect on the following vehicle.
【０００３】[0003]
【発明が解決しようとする課題】ところが、従来の車載
用表示装置を用いた場合、図６に後続車両から先行車両
を見た図に示すように、後続車両３の運転者から見る
と、先行車両１のカーナビゲーションシステム、ＴＶ等
の表示画面２の画面光が見えてしまい、ブレーキランプ
と見誤ったり、運転者の視線を引きつけるため、交通状
況への注意が散漫になったりして、安全性が非常に低下
してしまう欠点がある。However, when a conventional vehicle-mounted display device is used, as seen from the driver of the following vehicle 3 as shown in FIG. The screen light of the display screen 2 of the car navigation system, TV, etc. of the vehicle 1 can be seen, so that it may be misidentified as a brake lamp or may attract the driver's line of sight. There is a disadvantage that the properties are greatly reduced.
【０００４】特に、ダッシュボードに組み込むタイプの
ものではなく、後から設置したものでは、設置点が比較
的高いため、後続車両の運転者の視線の延長上に位置す
る場合が多かった。そのため、渋滞中に後続車の運転者
が先行車のディスプレイに映されたテレビ放送に気をと
られたり、赤色の表示がハイマウントストップランプと
誤認されること等による事故も起こり得る。[0004] In particular, in the case of a type that is installed later, rather than a type that is incorporated in a dashboard, the installation point is relatively high, and thus it is often located on an extension of the line of sight of the driver of the following vehicle. Therefore, during a traffic jam, a driver of a following vehicle may be distracted by a television broadcast displayed on a display of a preceding vehicle, or an accident may occur such that a red display is mistaken for a high-mount stop lamp.
【０００５】本発明は従来技術のこのような問題点に鑑
みてなされたものであり、その目的は、当該車両の運転
者及び同乗者には表示が明瞭に見え、後続車両の運転者
には見え難いため眩惑作用を与えないようにして安全性
を向上させ、危険防止を図った車載用表示システムを提
供することである。The present invention has been made in view of such problems of the prior art, and has as its object the purpose of making the display clearly visible to the driver and passengers of the vehicle, and to the driver of the following vehicle. An object of the present invention is to provide an in-vehicle display system that improves safety by preventing dazzling because it is difficult to see and prevents danger.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成する本発
明の車載用表示システムは、車載用表示装置の表示画面
から射出する表示光の偏光方向と当該車両の後方視界の
偏光透過方向とが略直交するように構成し、後続車両へ
の前記表示画面による眩惑作用を軽減させたことを特徴
とするものである。According to the present invention, there is provided a vehicle-mounted display system in which the polarization direction of display light emitted from a display screen of a vehicle-mounted display device and the polarization transmission direction of a rear view of the vehicle are different. The display device is configured to be substantially orthogonal to reduce dazzling effect of the display screen on a following vehicle.
【０００７】この場合、車載用表示装置として陰極線表
示管（以下、ＣＲＴと略記）あるいはプラズマ表示パネ
ルを用い、その表示面に第１の偏光フィルムを配置し、
当該車両のリアウンドウあるいはその近傍の少なくとも
一部の領域に第２の偏光フィルムを第１の偏光フィルム
とは偏光特性が略直角方向になるように配置して構成す
ることができる。In this case, a cathode ray display tube (hereinafter abbreviated as CRT) or a plasma display panel is used as a display device for a vehicle, and a first polarizing film is disposed on the display surface thereof.
A second polarizing film may be arranged in at least a part of the region around or around the rear window of the vehicle so that the polarizing characteristic of the second polarizing film is substantially perpendicular to that of the first polarizing film.
【０００８】また、車載用表示装置として少なくとも観
察側に偏光板を備えた液晶表示装置を用い、当該車両の
リアウンドウあるいはその近傍の少なくとも一部の領域
に偏光フィルムを液晶表示装置の観察側の偏光板とは偏
光特性が略直角方向になるように配置して構成すること
もできる。In addition, a liquid crystal display device having a polarizing plate at least on the observation side is used as a display device mounted on a vehicle, and a polarizing film is provided on at least a part of the rear window of the vehicle or in the vicinity of the rear window. The plate and the plate may be arranged so that their polarization characteristics are substantially perpendicular to each other.
【０００９】本発明においては、車載用表示装置の表示
画面から射出する表示光の偏光方向と当該車両の後方視
界の偏光透過方向とが略直交するように構成すること
で、当該車両の運転者及び同乗者には表示が明瞭に見
え、かつ、後続車両の運転者にはその表示が見え難いた
め、後続車両の運転者には眩惑作用を与えることがな
く、危険防止、運転業務安全に寄与するものである。In the present invention, the driver of the vehicle is provided with a configuration in which the polarization direction of the display light emitted from the display screen of the vehicle-mounted display device is substantially orthogonal to the polarization transmission direction of the rear view of the vehicle. In addition, the display is clearly visible to passengers, and it is difficult for the driver of the following vehicle to see the display, so that the driver of the following vehicle does not dazzle, contributing to danger prevention and driving work safety Is what you do.
【００１０】[0010]
【発明の実施の形態】以下、本発明の車載用表示システ
ムの原理と実施例について説明する。まず、本発明の原
理を図１の模式図を用いて説明する。図中、１１はＣＲ
Ｔ、ＰＤＰ（プラズマ表示パネル）等の車載表示装置、
１２は車載表示装置の表示面に貼り付ける画面用偏光フ
ィルター、１３はリアウインドウ等車両の後部に設ける
後方用偏光フィルターであり、車載表示装置１１として
液晶表示装置を用いる場合はその表示面に偏光フィルタ
ーを一体に備えているので、画面用偏光フィルター１２
は省かれる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The principle and embodiments of a vehicle-mounted display system according to the present invention will be described below. First, the principle of the present invention will be described with reference to the schematic diagram of FIG. In the figure, 11 is CR
In-vehicle display devices such as T, PDP (plasma display panel),
Reference numeral 12 denotes a screen polarizing filter to be attached to the display surface of the on-vehicle display device. Reference numeral 13 denotes a rear polarizing filter provided on the rear portion of the vehicle such as a rear window. When a liquid crystal display device is used as the on-vehicle display device 11, the display surface has polarized light. Since the filter is integrally provided, the polarizing filter 12 for screen is used.
Is omitted.
【００１１】このような構成であるので、車載表示装置
１１からの表示光１４は画面用偏光フィルター１２を通
過することにより、図中に符号１５で示すように、画面
用偏光フィルター１２の偏光方向（透過可能な偏光面の
方向。図では、水平方向）と同じ方向に偏光面を有する
直線偏光となる。図中で、光１５は大部分が水平方向に
偏光しているが、垂直方向の偏光成分を若干含むように
図示してある。これは、画面用偏光フィルター１２の偏
光特性が１００％でない場合を表している。この状態
で、当該車両に乗車している運転者及び同乗者１８には
上記直線偏光１５が見えるので、車載表示装置１１の表
示は明瞭に見える。With such a configuration, the display light 14 from the on-vehicle display device 11 passes through the screen polarizing filter 12, and as shown by reference numeral 15 in FIG. (Direction of a polarizing plane that can be transmitted; horizontal direction in the figure) is linearly polarized light having a polarizing plane in the same direction. In the figure, the light 15 is mostly polarized in the horizontal direction, but is shown to include a slight vertical polarization component. This represents a case where the polarization characteristics of the screen polarizing filter 12 are not 100%. In this state, the linearly polarized light 15 is visible to the driver and the passenger 18 in the vehicle, so that the display on the in-vehicle display device 11 is clearly visible.
【００１２】偏光フィルター１２を通過した直線偏光１
５は、その後リアウインドウ等車両の後部に設けられた
後方用偏光フィルター１３に達するが、後方用偏光フィ
ルター１３の偏光方向は偏光フィルター１２の偏光方向
と直交するように設定されている（図の場合は、垂直方
向）ため、光１５はこの後方用偏光フィルター１３で遮
断されほとんど通過できない。図中で、図示の目的で、
後方用偏光フィルター１３を通過した光１６が描かれて
いるが、偏光フィルター１２、１３の偏光特性が１００
％である場合は、この光は存在しない。したがって、後
続車両の運転者１７には、先行車両の車載表示装置１１
の表示はほとんど見えず、眩惑作用を与えることはな
い。The linearly polarized light 1 passing through the polarizing filter 12
5 reaches a rear polarizing filter 13 provided at the rear of the vehicle such as a rear window, and the polarization direction of the rear polarizing filter 13 is set to be orthogonal to the polarization direction of the polarizing filter 12 (see FIG. In this case, the light 15 is blocked by the rear polarizing filter 13 and hardly passes. In the figure, for illustration purposes,
The light 16 that has passed through the rear polarization filter 13 is illustrated, but the polarization characteristics of the polarization filters 12 and 13 are 100.
If it is%, this light is absent. Therefore, the driver 17 of the following vehicle is provided with the in-vehicle display device 11 of the preceding vehicle.
Is almost invisible and has no dazzling effect.
【００１３】このように、車載表示装置１１の表示光１
５の偏光方向と車両後方視界の偏光透過特性が遮断関係
になるように組み合わせて設定すると、表示光１５は後
方視界を透過できず、結果として後続車両の運転者１７
の眼には表示光が到達し難い。本発明はこの作用を応用
したものである。As described above, the display light 1 of the in-vehicle display device 11 is
If the polarization direction 5 and the polarization transmission characteristic of the field of view behind the vehicle are set so as to have a blocking relationship, the display light 15 cannot pass through the field of view behind, and as a result, the driver 17
The display light is difficult to reach the eyes. The present invention is an application of this function.
【００１４】具体的には、偏光フィルム１２、１３を相
互に偏光方向が直交するように配置することで簡単に実
現できる。なお、当該車両内の運転者には、表示の明る
さが余り低下せず明瞭に視認できるという特徴がある。Specifically, it can be easily realized by arranging the polarizing films 12 and 13 so that the polarizing directions are orthogonal to each other. It is to be noted that the driver in the vehicle has a feature that the brightness of the display does not decrease so much and can be clearly recognized.
【００１５】以下、本発明のいくつかの実施例について
説明する。図２に示すように、車載用６インチＣＲＴ１
１を用い、その管面に偏光フィルム（日東電工（株）
製）１２を貼り付け、画面からの射出光を直線偏光にし
た。次に、この表示管１１を搭載した車両のリアウイン
ドウガラス１９の車内側全面に同様の偏光フィルム１３
を表示管とは偏光特性が直角方向になるように調整して
貼り付けた。その結果、当該車両の運転者及び同乗者に
は表示画面の明るさは約半分となったが、車外の後方か
ら車内の表示管１１の画面は全く見えなかった。Hereinafter, some embodiments of the present invention will be described. As shown in FIG.
1 and a polarizing film (Nitto Denko Corporation)
12), and the light emitted from the screen was linearly polarized. Next, a similar polarizing film 13 is formed on the entire inner surface of the rear window glass 19 of the vehicle on which the display tube 11 is mounted.
Was attached to the display tube so that the polarization characteristics were in the direction perpendicular to the display tube. As a result, the brightness of the display screen was reduced to about half for the driver and the passenger of the vehicle, but the screen of the display tube 11 in the vehicle was not visible at all from the rear outside the vehicle.
【００１６】次に、図３に示すように、車載用６インチ
ＣＲＴ１１を用い、その管面に偏光フィルム（日東電工
（株）製）１２を貼り付け、画面からの射出光を直線偏
光にした。次に、この表示管１１を搭載した車両のリア
ウインドウガラス１９の車内側の後続車から上記の管面
が見える範囲に同様の偏光フィルム１３を表示管とは偏
光特性が直角方向になるように調整して貼り付けた。そ
の結果、当該車両の運転者及び同乗者には表示画面の明
るさは約半分となったが、車外の後方の後続車の表示管
１１が見えるはずの範囲からは車内の表示管１１の画面
は全く見えなかった。Next, as shown in FIG. 3, a polarizing film (manufactured by Nitto Denko Corporation) 12 is adhered to the tube surface of a 6-inch CRT 11 for in-vehicle use, and the light emitted from the screen is linearly polarized. . Next, a similar polarizing film 13 is placed in a range in which the above-mentioned tube surface can be seen from a vehicle behind the rear window glass 19 of the vehicle equipped with the display tube 11 so that the polarization characteristic is perpendicular to the display tube. Adjusted and pasted. As a result, the brightness of the display screen is reduced to about half for the driver and the passenger of the vehicle, but the screen of the display tube 11 in the vehicle is out of the range where the display tube 11 of the following vehicle behind the vehicle should be visible. Could not be seen at all.
【００１７】図２と同様に、車載用６インチＣＲＴ１１
を用い、その管面に低偏光能の偏光フィルム（日東電工
（株）製）１２を貼り付け、画面からの射出光を部分直
線偏光にした。次に、この表示管１１を搭載した車両の
リアウインドウガラス１９の車内側全面に同様の低偏光
能の偏光フィルム１３を表示管とは偏光特性が直角方向
になるように調整して貼り付けた。その結果、当該車両
の運転者及び同乗者には表示画面の明るさは約７０％と
なったが、車外の後方から車内の表示管１１の画面はほ
とんど見えなかった。As shown in FIG. 2, a 6-inch CRT 11 for in-vehicle use
And a polarizing film (manufactured by Nitto Denko Corporation) 12 having a low polarizing ability was attached to the tube surface, and the light emitted from the screen was partially linearly polarized. Next, a similar polarizing film 13 having a low polarization ability was attached to the entire rear window glass 19 of the vehicle equipped with the display tube 11 so that the polarization characteristics thereof were perpendicular to the display tube. . As a result, the brightness of the display screen became about 70% for the driver and the passenger of the vehicle, but the screen of the display tube 11 in the vehicle was hardly visible from the rear outside the vehicle.
【００１８】次に、図３と同様に、車載用６インチＣＲ
Ｔ１１を用い、その管面に低偏光能の偏光フィルム（日
東電工（株）製）１２を貼り付け、画面からの射出光を
部分直線偏光にした。次に、この表示管１１を搭載した
車両のリアウインドウガラス１９の車内側の後続車から
上記の管面が見える範囲に同様の低偏光能の偏光フィル
ム１３を表示管とは偏光特性が直角方向になるように調
整して貼り付けた。その結果、当該車両の運転者及び同
乗者には表示画面の明るさは約７０％となったが、車外
の後方の後続車の表示管１１が見えるはずの範囲からは
車内の表示管１１の画面はほとんど見えなかった。Next, similarly to FIG.
Using T11, a polarizing film 12 of low polarization capability (manufactured by Nitto Denko Corporation) was attached to the tube surface, and the light emitted from the screen was converted to partially linearly polarized light. Next, a polarizing film 13 having the same low polarization capability is placed in a range in which the above-mentioned tube surface can be seen from a vehicle behind the rear window glass 19 of the vehicle equipped with the display tube 11 in a direction perpendicular to the display tube. It was adjusted so that it became. As a result, the brightness of the display screen is reduced to about 70% for the driver and the passenger of the vehicle, but the display tube 11 in the vehicle is located within a range where the display tube 11 of the following vehicle behind the vehicle should be visible. The screen was almost invisible.
【００１９】次に、図２と同様に、車載用６インチＣＲ
Ｔ１１を用い、その管面に低偏光能の偏光フィルム（日
東電工（株）製）１２を貼り付け、画面からの射出光を
部分直線偏光にした。次に、この表示管１１を搭載した
車両のリアウインドウガラス１９において、図４に断面
を示すように、合わせガラスを構成する両側のガラス２
１、２２の間のサンドイッチフィルムに薄型の低偏光能
の偏光フィルム１３を表示管とは偏光特性が直角方向に
なるように調整して挟み込んだ。その結果、当該車両の
運転者及び同乗者には表示画面の明るさは約７０％とな
ったが、車外の後方から車内の表示管１１の画面はほと
んど見えなかった。Next, as shown in FIG.
Using T11, a polarizing film 12 of low polarization capability (manufactured by Nitto Denko Corporation) was attached to the tube surface, and the light emitted from the screen was converted to partially linearly polarized light. Next, in the rear window glass 19 of the vehicle equipped with the display tube 11, as shown in a cross section in FIG.
A thin polarizing film 13 having a low polarization ability was sandwiched between the sandwich films 1 and 22 so that the polarizing characteristics of the thin polarizing film 13 were perpendicular to the display tube. As a result, the brightness of the display screen became about 70% for the driver and the passenger of the vehicle, but the screen of the display tube 11 in the vehicle was hardly visible from the rear outside the vehicle.
【００２０】次に、図２と同様に、車載用６インチプラ
ズマ表示パネル（ＰＤＰ）１１を用い、その表示面に低
偏光能の偏光フィルム（日東電工（株）製）１２を貼り
付け、画面からの射出光を部分直線偏光にした。次に、
この表示パネル１１を搭載した車両のリアウインドウガ
ラス１９において、図４に断面を示すように、合わせガ
ラスを構成する両側のガラス２１、２２の間のサンドイ
ッチフィルムに薄型の低偏光能の偏光フィルム１３を表
示パネル１１とは偏光特性が直角方向になるように調整
して挟み込んだ。その結果、当該車両の運転者及び同乗
者には表示画面の明るさは約７０％となったが、車外の
後方から車内の表示パネル１１の画面はほとんど見えな
かった。Next, similarly to FIG. 2, a 6-inch plasma display panel (PDP) 11 for vehicle use is used, and a polarizing film 12 (manufactured by Nitto Denko Corporation) having a low polarization ability is attached to the display surface thereof. Was converted to partially linearly polarized light. next,
In a rear window glass 19 of a vehicle having the display panel 11 mounted thereon, as shown in a cross section in FIG. 4, a thin low-polarizing polarizing film 13 is sandwiched between sandwiched glasses 21 and 22 constituting a laminated glass. Was adjusted so that the polarization characteristics were in the direction perpendicular to the display panel 11 and sandwiched. As a result, the brightness of the display screen became about 70% for the driver and the passenger of the vehicle, but the screen of the display panel 11 in the vehicle was hardly visible from the rear outside the vehicle.
【００２１】次に、車載用４インチ液晶表示パネルにお
いて、液晶表示パネルはそのままとした。次に、この表
示パネルを搭載した車両のリアウインドウガラス１９に
おいて、図４に断面を示すように、合わせガラスを構成
する両側のガラス２１、２２の間のサンドイッチフィル
ムに薄型の低偏光能の偏光フィルム１３を表示パネルの
観察側の偏光板とは偏光特性が直角方向になるように調
整して挟み込んだ。その結果、当該車両の運転者及び同
乗者には表示画面の明るさは変化なく、車外の後方から
車内の表示パネルの画面はほとんど見えなかった。Next, in the in-vehicle 4-inch liquid crystal display panel, the liquid crystal display panel was kept as it was. Next, in the rear window glass 19 of the vehicle equipped with this display panel, as shown in a cross section in FIG. 4, a thin film of low polarization ability is sandwiched between sandwich glasses 21 and 22 on both sides constituting a laminated glass. The film 13 was sandwiched with the polarizing plate on the viewing side of the display panel so as to adjust the polarization characteristics in the direction perpendicular to the polarizing plate. As a result, the brightness of the display screen did not change for the driver and the passenger of the vehicle, and the screen of the display panel in the vehicle was hardly seen from behind the vehicle.
【００２２】次に、図３と同様に、車載用４インチ液晶
表示パネル１１をそのまま用いた。次に、この表示パネ
ル１１を搭載した車両のリアウインドウガラス１９の車
内側の後続車から上記の管面が見える範囲に同様の低偏
光能の偏光フィルム１３を表示パネル１１とは偏光特性
が直角方向になるように調整して貼り付けた。その結
果、当該車両の運転者及び同乗者には表示画面の明るさ
は変化なく、車外の後方の車内の表示パネル１１が見え
るはずの範囲からは車内の表示パネル１１の画面はほと
んど見えなかった。Next, similarly to FIG. 3, the 4-inch liquid crystal display panel 11 for a vehicle was used as it was. Next, a polarizing film 13 having a similar low polarization ability is provided at a right angle to the display panel 11 in a range where the above-described tube surface can be seen from a vehicle behind the rear window glass 19 of the vehicle equipped with the display panel 11. It was adjusted to the direction and pasted. As a result, the brightness of the display screen did not change for the driver and the fellow passenger of the vehicle, and the screen of the display panel 11 in the vehicle was hardly visible from a range where the display panel 11 in the vehicle behind the vehicle was supposed to be visible. .
【００２３】次に、図５に示すように、車載用４インチ
液晶表示パネル１１をそのまま用いた。次に、この表示
パネル１１を搭載した車両のリアトレイに設置した透明
衝立２０に偏光フィルム１３を表示パネル１１とは偏光
特性が直角方向になるように調整して貼り付けた。その
結果、当該車両の運転者及び同乗者には表示画面の明る
さは変化なく、車外の後方の車内の表示パネル１１が見
えるはずの範囲からは車内の表示パネル１１の画面はほ
とんど見えなかった。Next, as shown in FIG. 5, the in-vehicle 4-inch liquid crystal display panel 11 was used as it was. Next, a polarizing film 13 was attached to a transparent partition 20 installed on a rear tray of a vehicle on which the display panel 11 was mounted so that the polarization characteristics of the polarizing film 13 were perpendicular to the display panel 11. As a result, the brightness of the display screen did not change for the driver and the fellow passenger of the vehicle, and the screen of the display panel 11 in the vehicle was hardly visible from a range where the display panel 11 in the vehicle behind the vehicle was supposed to be visible. .
【００２４】以上、本発明の車載用表示システムを原理
といくつかの実施例に基づいて説明してきたが、本発明
はこれら実施例に限定されず種々の変形が可能である。Although the display system for a vehicle according to the present invention has been described based on the principle and some embodiments, the present invention is not limited to these embodiments, and various modifications are possible.
【００２５】[0025]
【発明の効果】以上の説明から明らかなように、本発明
の車載用表示システムによると、車載用表示装置の表示
画面から射出する表示光の偏光方向と当該車両の後方視
界の偏光透過方向とが略直交するように構成すること
で、当該車両の運転者及び同乗者には表示が明瞭に見
え、かつ、後続車両の運転者にはその表示が見え難いた
め、後続車両の運転者には眩惑作用を与えることがな
く、危険防止、運転業務安全に寄与するものである。ま
た、夜間、後続車両からの前照灯による強い光を、リア
ウインドウに設けた偏光フィルタで減光するための防眩
効果も同時に期待できる。As is apparent from the above description, according to the vehicle-mounted display system of the present invention, the polarization direction of the display light emitted from the display screen of the vehicle-mounted display device and the polarization transmission direction of the rear view of the vehicle are determined. Are arranged so as to be substantially orthogonal, the display is clearly visible to the driver and the passenger of the vehicle, and the display of the display is difficult for the driver of the following vehicle. It has no dazzling effect and contributes to danger prevention and driving safety. In addition, at night, an anti-glare effect for dimming strong light from a headlight from a following vehicle with a polarizing filter provided in a rear window can be expected.
【図１】本発明の車載用表示システムの原理を説明する
ための模式図である。FIG. 1 is a schematic diagram for explaining the principle of an in-vehicle display system according to the present invention.
【図２】１つの実施例の概略の構成を示す図である。FIG. 2 is a diagram showing a schematic configuration of one embodiment.
【図３】別の実施例の概略の構成を示す図である。FIG. 3 is a diagram showing a schematic configuration of another embodiment.
【図４】１つの実施例で用いる偏光フィルムを挟み込ん
だ合わせガラスの断面図である。FIG. 4 is a cross-sectional view of a laminated glass sandwiching a polarizing film used in one embodiment.
【図５】さらに別の実施例の概略の構成を示す図であ
る。FIG. 5 is a diagram showing a schematic configuration of still another embodiment.
【図６】従来の車載用表示装置を搭載した車両の問題点
を説明するための図である。FIG. 6 is a diagram for explaining a problem of a vehicle equipped with a conventional in-vehicle display device.
１…先行車両 ２…表示画面 ３…後続車両 １１…車載表示装置 １２…画面用偏光フィルター １３…後方用偏光フィルター １４…表示光 １５…画面用偏光フィルター透過した直線偏光 １６…後方用偏光フィルターを透過した光 １７…後続車両の運転者 １８…当該車両の運転者及び同乗者 １９…リアウインドウガラス ２０…透明衝立 ２１、２２…合わせガラスを構成するガラス DESCRIPTION OF SYMBOLS 1 ... Leading vehicle 2 ... Display screen 3 ... Subsequent vehicle 11 ... In-vehicle display device 12 ... Screen polarizing filter 13 ... Backward polarizing filter 14 ... Display light 15 ... Linear polarizing light transmitted through screen polarizing filter 16 ... Backward polarizing filter Transmitted light 17: Driver of following vehicle 18: Driver and passenger of the vehicle 19: Rear window glass 20: Transparent screen 21, 22: Glass forming laminated glass
Claims (3)
表示光の偏光方向と当該車両の後方視界の偏光透過方向
とが略直交するように構成し、後続車両への前記表示画
面による眩惑作用を軽減させたことを特徴とする車載用
表示システム。1. A display device of a vehicle-mounted display device, wherein a polarization direction of display light emitted from a display screen is substantially orthogonal to a polarization transmission direction of a rear view of the vehicle, and a dazzling effect of the display screen on a following vehicle is provided. In-vehicle display system characterized by reducing the number of vehicles.
あるいはプラズマ表示パネルを用い、その表示面に第１
の偏光フィルムを配置し、当該車両のリアウンドウある
いはその近傍の少なくとも一部の領域に第２の偏光フィ
ルムを前記第１の偏光フィルムとは偏光特性が略直角方
向になるように配置したことを特徴とする請求項１記載
の車載用表示システム。2. A cathode ray tube or a plasma display panel is used as the in-vehicle display device, and a first surface is provided on a display surface thereof.
Wherein the second polarizing film is disposed in at least a part of the rear window of the vehicle or in the vicinity thereof so that the polarization characteristics thereof are substantially perpendicular to the first polarizing film. The in-vehicle display system according to claim 1, wherein
察側に偏光板を備えた液晶表示装置を用い、当該車両の
リアウンドウあるいはその近傍の少なくとも一部の領域
に偏光フィルムを前記の液晶表示装置の観察側の偏光板
とは偏光特性が略直角方向になるように配置したことを
特徴とする請求項１記載の車載用表示システム。3. A liquid crystal display device having a polarizing plate on at least an observation side as the on-vehicle display device, and a polarizing film is provided on at least a part of the rear window of the vehicle or in the vicinity thereof to observe the liquid crystal display device. The in-vehicle display system according to claim 1, wherein the polarizer on the side is disposed so that a polarization characteristic thereof is substantially perpendicular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20554996A JPH1051764A (en) | 1996-08-05 | 1996-08-05 | On-vehicle display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20554996A JPH1051764A (en) | 1996-08-05 | 1996-08-05 | On-vehicle display system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1051764A true JPH1051764A (en) | 1998-02-20 |
Family
ID=16508738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20554996A Pending JPH1051764A (en) | 1996-08-05 | 1996-08-05 | On-vehicle display system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1051764A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6909544B2 (en) * | 2002-04-16 | 2005-06-21 | Honeywell International Inc. | Method for eliminating strong ambient light in aircraft cockpits |
| JP2007008271A (en) * | 2005-06-29 | 2007-01-18 | Optrex Corp | Vehicle-mounted display system and glass for vehicle |
| US7773299B2 (en) | 2007-05-31 | 2010-08-10 | Aither Optics Inc. | Controlling light transmission in a vehicle with polarization and ellipticity adjustment |
| US9547112B2 (en) | 2013-02-06 | 2017-01-17 | Steelcase Inc. | Polarized enhanced confidentiality |
| US9956854B2 (en) | 2016-07-12 | 2018-05-01 | Toyota Motor Engineering & Manufacturing North America, Inc. | Vehicle display screen safety and privacy system |
| US11106124B2 (en) | 2018-02-27 | 2021-08-31 | Steelcase Inc. | Multiple-polarization cloaking for projected and writing surface view screens |
| US11221497B2 (en) | 2017-06-05 | 2022-01-11 | Steelcase Inc. | Multiple-polarization cloaking |
-
1996
- 1996-08-05 JP JP20554996A patent/JPH1051764A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6909544B2 (en) * | 2002-04-16 | 2005-06-21 | Honeywell International Inc. | Method for eliminating strong ambient light in aircraft cockpits |
| JP2007008271A (en) * | 2005-06-29 | 2007-01-18 | Optrex Corp | Vehicle-mounted display system and glass for vehicle |
| US7773299B2 (en) | 2007-05-31 | 2010-08-10 | Aither Optics Inc. | Controlling light transmission in a vehicle with polarization and ellipticity adjustment |
| US7965443B2 (en) | 2007-05-31 | 2011-06-21 | Aither Optics, Inc. | Controlling light transmission with polarization and ellipticity adjustment |
| US9547112B2 (en) | 2013-02-06 | 2017-01-17 | Steelcase Inc. | Polarized enhanced confidentiality |
| US9885876B2 (en) | 2013-02-06 | 2018-02-06 | Steelcase, Inc. | Polarized enhanced confidentiality |
| US10061138B2 (en) | 2013-02-06 | 2018-08-28 | Steelcase Inc. | Polarized enhanced confidentiality |
| US9956854B2 (en) | 2016-07-12 | 2018-05-01 | Toyota Motor Engineering & Manufacturing North America, Inc. | Vehicle display screen safety and privacy system |
| US11221497B2 (en) | 2017-06-05 | 2022-01-11 | Steelcase Inc. | Multiple-polarization cloaking |
| US11106124B2 (en) | 2018-02-27 | 2021-08-31 | Steelcase Inc. | Multiple-polarization cloaking for projected and writing surface view screens |
| US11500280B2 (en) | 2018-02-27 | 2022-11-15 | Steelcase Inc. | Multiple-polarization cloaking for projected and writing surface view screens |
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