JP2011173578A - Dimming device - Google Patents

Dimming device Download PDF

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JP2011173578A
JP2011173578A JP2010149754A JP2010149754A JP2011173578A JP 2011173578 A JP2011173578 A JP 2011173578A JP 2010149754 A JP2010149754 A JP 2010149754A JP 2010149754 A JP2010149754 A JP 2010149754A JP 2011173578 A JP2011173578 A JP 2011173578A
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light
polarizing plate
high beam
front window
automobile
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Takehiko Kiyohara
武彦 清原
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Imasen Electric Industrial Co Ltd
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Imasen Electric Industrial Co Ltd
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  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an dimming device for reducing the glare of the light of a headlamp of an oncoming car without impairing visibility. <P>SOLUTION: An automobile has a headlamp device and a front window. The headlamp device is the dimming device including a low beam irradiating unit for illuminating a near place in the advancing direction, a high beam irradiating unit for illuminating a distant place in the advancing direction, a resin cover for covering the front of the low beam irradiating unit and the high beam irradiating unit and a first polarizing plate arranged inside the resin cover and passing only the light of vibrating in the specific direction, wherein the front window includes a light receiving element for detecting the light of a high beam from the other automobile, a second polarizing plate for transmitting the light of the high beam from the other automobile and a variable device for changing an angle of the second polarizing plate. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、夜間自動車を走行させる際に対向車の前照灯の光の眩しさを軽減させる減光装置に関する。   The present invention relates to a dimming device that reduces the glare of the headlight of an oncoming vehicle when a vehicle is driven at night.

すれ違う対向車などの前照灯装置の光の眩しさを軽減させる減光装置として、例えば、特許文献1の「防眩装置」のようなものがある。この防眩装置は、垂直方向に振動する偏光のみを透過する偏光板をヘッドライト及びフォグランプの樹脂カバー表面に有し、水平方向に振動する偏光のみを透過する偏光板を90°交差するよう、フロントウィンドウに備えることにより、すれ違う対向車などの前照灯装置による幻惑を防いでいる。しかし、特許文献1の防眩装置では、対向車の前照灯の光はフロントウィンドウを一切通過しないため、対向車の視認性が著しく低下し危険であると予測される。   As a dimming device that reduces the glare of light from a headlight device such as a passing oncoming vehicle, there is, for example, a “anti-glare device” of Patent Document 1. This anti-glare device has a polarizing plate that transmits only polarized light that vibrates in the vertical direction on the resin cover surface of the headlight and fog lamp, and 90 ° crosses the polarizing plate that transmits only polarized light that vibrates in the horizontal direction. By providing it in the front window, it prevents illusions due to headlight devices such as passing oncoming vehicles. However, in the antiglare device of Patent Document 1, since the light of the headlight of the oncoming vehicle does not pass through the front window at all, the visibility of the oncoming vehicle is remarkably deteriorated and is expected to be dangerous.

特開2002−036876JP 2002-036876

運転手の視認性を損なうことなく対向車の前照灯装置の光の眩しさを軽減する減光装置を提供することを目的とする。 It is an object of the present invention to provide a dimming device that reduces glare in the headlamp device of an oncoming vehicle without impairing the visibility of the driver.

本発明は、前照灯装置とフロントウィンドウとを備える自動車において、前照灯装置は、進行方向近場を照らすロービーム照射ユニットと、進行方向遠方を照らすハイビーム照射ユニットと、ロービーム照射ユニット及びハイビーム照射ユニットの前方を覆う樹脂カバーと、樹脂カバーの内側に設けられ特定の方向に振動している光のみを通過させる第1偏光板を備え、フロントウィンドウは、他の自動車からのハイビームの光を検知する受光素子と、他の自動車からのハイビームの光が透過する第2偏光板と、第2偏光板の角度を変更する可変装置を備えることを技術的特徴とする減光装置。 The present invention relates to a vehicle including a headlight device and a front window. The headlight device includes a low beam irradiation unit that illuminates a near field in the traveling direction, a high beam irradiation unit that illuminates a far direction in the traveling direction, a low beam irradiation unit, and a high beam irradiation. A resin cover that covers the front of the unit and a first polarizing plate that is provided inside the resin cover and allows only light that vibrates in a specific direction to pass through. The front window detects high-beam light from other automobiles. A light-reducing device comprising: a light-receiving element that transmits light; a second polarizing plate that transmits high-beam light from another automobile; and a variable device that changes an angle of the second polarizing plate.

請求項1に記載する減光装置によれば、道路標識や歩行者の視認性に支障を与えず、対向車の前照灯の眩しさを軽減できるため、自動車を安全に運転することができる。   According to the light reduction device described in claim 1, since the glare of the headlight of the oncoming vehicle can be reduced without hindering the visibility of road signs and pedestrians, the automobile can be driven safely. .

ヘッドランプユニットの概略図である。It is the schematic of a headlamp unit. フロントウィンドウの概略図である。It is the schematic of a front window. 偏光板の概略図である。It is the schematic of a polarizing plate. 偏光板による減光する概略図である。It is the schematic which attenuates with a polarizing plate.

以下に、本発明の実施例を示す。本発明にかかる減光装置1は、自動車の前照灯装置(以下、ヘッドランプユニット2)と自動車のフロントウィンドウ3に設けられている。   Examples of the present invention are shown below. A dimming device 1 according to the present invention is provided in a headlight device (hereinafter referred to as a headlamp unit 2) of an automobile and a front window 3 of the automobile.

自動車のヘッドランプユニット2は、車両の進行方向に対し前面に設けてあり、図1に示すように、進行方向近場を照らすロービーム照射ユニット4と、進行方向遠方を照らすハイビーム照射ユニット5を備えており、前方を樹脂カバー6で覆っている。   The headlamp unit 2 of the automobile is provided in front of the traveling direction of the vehicle, and includes a low beam irradiation unit 4 that illuminates the near field in the traveling direction and a high beam irradiation unit 5 that illuminates the far direction in the traveling direction, as shown in FIG. The front is covered with a resin cover 6.

ハイビーム照射ユニット5は、照射角度が高く対向車の運転手の幻惑の原因となるため、樹脂カバー6内面に、垂直方向にのみ振動する光のみを透過する第1偏光板7を設けている。偏光板7は、特定の方向に偏光した光だけを通過させる薄い板状の偏光子で、自然光8や照明光などのあらゆる方向に振動している光を、偏光子を透過させることで振動方向が限られた光である直線偏光9に変えるものである。   Since the high beam irradiation unit 5 has a high irradiation angle and causes an illusion of the driver of the oncoming vehicle, the first polarizing plate 7 that transmits only light that vibrates only in the vertical direction is provided on the inner surface of the resin cover 6. The polarizing plate 7 is a thin plate-shaped polarizer that allows only light polarized in a specific direction to pass therethrough. Light that vibrates in all directions, such as natural light 8 and illumination light, is transmitted through the polarizer to vibrate. Is changed to linearly polarized light 9 which is limited light.

次に、フロントウィンドウ2は、運転席前方に設けられており、対向車のハイビームの光を検出する受光素子10と、他の自動車からのハイビームの光の透過をコントロールする第2偏光板11と、第2偏光板11の角度を可変できる可変装置12を備えている。 Next, the front window 2 is provided in front of the driver's seat, and includes a light receiving element 10 that detects high beam light from an oncoming vehicle, and a second polarizing plate 11 that controls transmission of high beam light from another vehicle. A variable device 12 that can change the angle of the second polarizing plate 11 is provided.

受光素子10は、光を検出するための素子であり、フロントウィンドウ3内の運転手が視認性を損なわない場所に設けられている。 The light receiving element 10 is an element for detecting light, and is provided in a place where the driver in the front window 3 does not impair visibility.

可変装置12は、フロントウィンドウ3に備えた第2偏光板11の角度を可変するものであって、対向車のハイビームの偏光角に対し45°<θ<90°の間で偏光板11を可変する。この可変装置12を、フロントウィンドウ3の内側両側面に設けることで、偏光板11の角度を可変し、対向車のハイビームの光の透過率をコントロールすることで眩しさを軽減する。ここで、透過率とは、自然光が反射板を透過する割合である。例えば、フロントウィンドウ3に偏光板11をハイビームの偏光角度に対し90°交差させて設けると、対向車が照射するハイビームの光はフロントウィンドウ3を一切透過しないため、視認性が著しく低下し危険である。 The variable device 12 changes the angle of the second polarizing plate 11 provided in the front window 3 and can change the polarizing plate 11 between 45 ° <θ <90 ° with respect to the polarization angle of the high beam of the oncoming vehicle. To do. By providing the variable device 12 on both inner side surfaces of the front window 3, the angle of the polarizing plate 11 can be varied, and glare can be reduced by controlling the light transmittance of the high beam of the oncoming vehicle. Here, the transmittance is a ratio of natural light transmitted through the reflecting plate. For example, if the polarizing plate 11 is provided on the front window 3 so as to cross 90 ° with respect to the polarization angle of the high beam, the high beam light radiated by the oncoming vehicle does not pass through the front window 3 at all. is there.

以下に、自動車のヘッドランプユニット2の一部と自動車のフロントウィンドウ3に設けることにより他の自動車からのハイビームの光の侵入が妨げられる実施例を示す。   In the following, an embodiment will be described in which intrusion of high beam light from other automobiles is prevented by providing a part of the automobile headlamp unit 2 and the front window 3 of the automobile.

運転手は、夜間の走行時やトンネル内を走行する際、道路の状況を把握するためするため、ヘッドランプを点灯させることにより安全に走行する。運転する車両の前方に他の車両が混雑して走行している場合では、運転手はヘッドランプをロービームの状態にして自動車を走行させる。そのため、後方を走る車両の光による眩しさや対向して走る車両の光による眩しさは気にすることなく自動車を安全に走行させることができようにしている。   The driver travels safely by turning on the headlamps in order to grasp the road conditions when traveling at night or in a tunnel. When another vehicle is congested and travels ahead of the vehicle to be driven, the driver travels the automobile with the headlamp in a low beam state. Therefore, it is possible to drive the automobile safely without worrying about the glare caused by the light of the vehicle running behind or the glare caused by the light of the vehicle running opposite.

運転する車両の前方に他の車両が走行していない場合、運転手は、自動車を安全に走行させるため、遠方の状況まで把握しようとハイビームの状態にして自動車を走行させることがある。運転手がハイビームを点灯すると、ハイビームの照射ユニット5の樹脂カバー6内面に設けた第1偏光板7により、垂直方向に振動する光のみ透過した光が自動車の進行方向に対し前方に照らし出される。この時、運転手がハイビームの状態にしてもロービームは消灯せず、自動車の進行方向近場と遠方の暗闇を照らしているため、自動車を安全に走行させることができる。   When no other vehicle is traveling ahead of the vehicle to be driven, the driver may drive the vehicle in a high beam state in order to grasp a distant situation in order to drive the vehicle safely. When the driver turns on the high beam, the first polarizing plate 7 provided on the inner surface of the resin cover 6 of the high beam irradiation unit 5 irradiates light that has transmitted only light that vibrates in the vertical direction forward with respect to the traveling direction of the automobile. . At this time, even if the driver is in a high beam state, the low beam is not extinguished, and the vehicle is traveling safely because it illuminates the near field and the darkness in the distance.

走行中ハイビーム状態ですれ違う対向車が現れた場合、すれ違う対向車の前照明のハイビームの光は樹脂カバー6内面に備えた第1偏光板7によって、垂直方向に振動する光のみ透過したが照射される。自分の運転している車両は、フロントウィンドウ3に備えた受光素子10によって対向車のハイビームの光を検出し、可変装置12によってフロントウィンドウ3に備えた偏光板11の角度を変更する。フロントウィンドウ3に備えた偏光板11の角度が変わることによって、対向車のハイビームの光の眩しさは、運転手が運転する際に気にならない程度に軽減され、自動車を安全に走行させることができる。この時、道路標識や歩行者に当たって跳ね返ったハイビームの光は、様々な方向に振動する光となるため視認性に影響を与えることはない。 When an oncoming vehicle appears in the high beam state while driving, the high beam light of the front lighting of the passing oncoming vehicle is irradiated by the first polarizing plate 7 provided on the inner surface of the resin cover 6 but only the light that vibrates in the vertical direction is transmitted. The The vehicle in which the driver is driving detects the high beam light of the oncoming vehicle by the light receiving element 10 provided in the front window 3, and changes the angle of the polarizing plate 11 provided in the front window 3 by the variable device 12. By changing the angle of the polarizing plate 11 provided in the front window 3, the glare of the high beam of the oncoming vehicle is reduced to the extent that the driver does not care, and the vehicle can be driven safely. it can. At this time, the high beam light bounced off when hitting a road sign or a pedestrian becomes light that vibrates in various directions, and thus does not affect the visibility.

また、ヘッドランプユニット2の中には、1つの照明バルブでハイとローを切り換えるタイプもある。このような場合では、偏光板7を備える位置を樹脂カバー6上面に設けることによって同様の効果を得ることができると思われる。 In addition, there is a type in which the headlamp unit 2 switches between high and low with one illumination bulb. In such a case, it seems that the same effect can be acquired by providing the position which provides the polarizing plate 7 in the upper surface of the resin cover 6. FIG.

よって、本発明の減光装置1を自動車に備えることによって、道路標識や歩行者を視認するのに支障を与えず、すれ違う対向車の光の眩しさを感じず自動車を運転できる。 Therefore, by providing the automobile with the dimming device 1 of the present invention, the automobile can be driven without causing any trouble in visually recognizing road signs and pedestrians and without feeling the glare of the passing oncoming vehicle.

1 減光装置
2 ヘッドランプユニット
3 フロントウィンドウ
4 ロービーム照射ユニット
5 ハイビーム照射ユニット
6 樹脂カバー
7 第1偏光板
8 自然光
9 直接偏光
10 受光素子
11 第2偏光板
12 可変装置
DESCRIPTION OF SYMBOLS 1 Dimming device 2 Headlamp unit 3 Front window 4 Low beam irradiation unit 5 High beam irradiation unit 6 Resin cover 7 1st polarizing plate 8 Natural light 9 Directly polarized light 10 Light receiving element 11 Second polarizing plate 12 Variable device

Claims (1)

前照灯装置とフロントウィンドウとを備える自動車において、
前記前照灯装置は、進行方向近場を照らすロービーム照射ユニットと、
進行方向遠方を照らすハイビーム照射ユニットと、
前記ロービーム照射ユニット及び前記ハイビーム照射ユニットの前方を覆う樹脂カバーと、
前記樹脂カバーの内側に設けられ特定の方向に振動している光のみを通過させる第1偏光板を備え、
前記フロントウィンドウは、他の自動車からのハイビームの光を検出する受光素子と、
他の自動車からのハイビームの光の透過をコントロールする第2偏光板と、
前記第2偏光板の角度を変更する可変装置を備えることを特徴とする減光装置。
In a car equipped with a headlight device and a front window,
The headlamp device includes a low beam irradiation unit that illuminates the near field in the traveling direction;
A high beam irradiation unit that illuminates the far direction of the traveling direction,
A resin cover covering the front of the low beam irradiation unit and the high beam irradiation unit;
A first polarizing plate that is provided inside the resin cover and allows only light vibrating in a specific direction to pass;
The front window includes a light receiving element that detects high beam light from another automobile,
A second polarizing plate for controlling the transmission of high beam light from other automobiles;
A dimming device comprising a variable device that changes an angle of the second polarizing plate.
JP2010149754A 2010-01-29 2010-06-30 Dimming device Pending JP2011173578A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010149754A JP2011173578A (en) 2010-01-29 2010-06-30 Dimming device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2010018572 2010-01-29
JP2010018572 2010-01-29
JP2010149754A JP2011173578A (en) 2010-01-29 2010-06-30 Dimming device

Publications (1)

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JP2011173578A true JP2011173578A (en) 2011-09-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102963294A (en) * 2012-11-02 2013-03-13 西安理工大学 Method for judging opening and closing states of high beam of vehicle driving at night
GB2527627A (en) * 2015-02-09 2015-12-30 Robin Aisher Headlight glare-reduction system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102963294A (en) * 2012-11-02 2013-03-13 西安理工大学 Method for judging opening and closing states of high beam of vehicle driving at night
CN102963294B (en) * 2012-11-02 2014-12-10 西安理工大学 Method for judging opening and closing states of high beam of vehicle driving at night
GB2527627A (en) * 2015-02-09 2015-12-30 Robin Aisher Headlight glare-reduction system
GB2527627B (en) * 2015-02-09 2019-03-06 Aisher Robin Headlight glare-reduction system

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