JPH0659201A - Device for adjusting light transmittancy - Google Patents

Device for adjusting light transmittancy

Info

Publication number
JPH0659201A
JPH0659201A JP23523092A JP23523092A JPH0659201A JP H0659201 A JPH0659201 A JP H0659201A JP 23523092 A JP23523092 A JP 23523092A JP 23523092 A JP23523092 A JP 23523092A JP H0659201 A JPH0659201 A JP H0659201A
Authority
JP
Japan
Prior art keywords
polarizing plate
moving body
movable
dielectric
movable side
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
JP23523092A
Other languages
Japanese (ja)
Other versions
JP2638717B2 (en
Inventor
Takeshi Tanaka
猛 田中
Daisuke Oba
大祐 大場
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.)
Asmo Co Ltd
Denso Corp
Original Assignee
Asmo Co Ltd
NipponDenso 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 Asmo Co Ltd, NipponDenso Co Ltd filed Critical Asmo Co Ltd
Priority to JP4235230A priority Critical patent/JP2638717B2/en
Publication of JPH0659201A publication Critical patent/JPH0659201A/en
Application granted granted Critical
Publication of JP2638717B2 publication Critical patent/JP2638717B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE:To obtain a simple, small-sized, light is weight and silent device for adjusting light transmittancy obtainable at a low cost in a broad area as well. CONSTITUTION:This device is provided with a pair of polarizing plates 22, 24 at a fixed side and a movable side superposing relatively movably in parallel and an electrostatic actuator 30 polarization-moving the polarizing plate 24 at a movable side to the polarizing plate 22 at a fixed side. The electrostatic actuator 30 consists of a transparent dielectric moving body 26 integrated to the polarizing plate 24 at a movable side and a stator 28 arranging plural transparent electrode parts 38 facing to the dielectric moving body 26 each other and applied with poly-phase voltage in the direction of movement of the polarizing plate 24 at a movable side. Then, by electrostatic induction, polarization is generated in the dielectric moving body 26, and the polarizing plate 24 at a movable side is moved through the dielectric moving body 26. Further, the stator 28 and the dielectric moving body 26 are arranged in hermetically sealed space 20 formed in transparent plates 18a, 18b, and are interrupted from outdoor air surely, and then reliability in operation is secured.

Description

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

【0001】[0001]

【産業上の利用分野】本発明は透光調整装置に関し、特
に車両用のサンバイザやサンルーフあるいはリヤウィン
ドウ等の透光量を調整するのに用いて便なる透光調整装
置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light transmissive adjusting device, and more particularly to a light transmissive adjusting device which is convenient for adjusting a light transmissive amount of a vehicle sun visor, a sunroof, a rear window or the like.

【0002】[0002]

【従来の技術】従来、この種の透光調整装置として、例
えば特開昭62−296112号公報に示されるような
ものが知られている。
2. Description of the Related Art Heretofore, a light transmission adjusting device of this type is known, for example, as disclosed in Japanese Patent Laid-Open No. 62-296112.

【0003】この透光調整装置は、偏光方向の異なる2
種の帯状の偏光膜を交互に列状に一定間隔で配列した偏
光板を2枚重ね合わせ、少なくとも一方の偏光板を可動
として、この可動偏光板の移動に伴う偏光膜の重なり量
の変化により透光量を制御するようにしている。
This translucency adjusting device has two different polarization directions.
By stacking two polarizing plates in which different kinds of band-shaped polarizing films are alternately arranged in a row at regular intervals, and at least one of the polarizing films is made movable, the amount of overlap of the polarizing films due to the movement of the movable polarizing plate is changed. The amount of light transmitted is controlled.

【0004】また、可動偏光板の移動手段として、電動
モータを用いるようにしていた。
Further, an electric motor has been used as a moving means of the movable polarizing plate.

【0005】[0005]

【発明が解決しようとする課題】前記従来の透光調整装
置にあっては、可動偏光板の移動手段として電動モータ
を用いており、この電動モータにより2枚の偏光板の偏
光膜が正確に重なるように移動させるためには、2点以
上の位置制御を正確に行う必要があり、そのためには、
位置を精度よく制御するための位置決めセンサと、電動
モータを制御する制御回路が必要となり、構成が複雑に
なる上に、大型になり、また電動モータの回転音が気に
なる場合もあるという問題があった。
In the above-mentioned conventional light transmission adjusting device, an electric motor is used as the moving means of the movable polarizing plate, and the polarizing film of the two polarizing plates is accurately moved by this electric motor. In order to move them so that they overlap, it is necessary to accurately control the position of two or more points.
A positioning sensor for controlling the position with high precision and a control circuit for controlling the electric motor are required, which complicates the configuration and increases the size, and the rotation noise of the electric motor may be a concern. was there.

【0006】このため液晶を用い、この液晶に電圧を印
加することで光の偏光方向を変え、遮光させるようにし
たものも知られているが、この場合には液晶が高価であ
るため、広範な面積の遮光には不向きであるという問題
があった。
For this reason, a liquid crystal has been known in which the polarization direction of light is changed by applying a voltage to the liquid crystal so that the light is shielded. However, in this case, the liquid crystal is expensive, and therefore it is widely used. There is a problem that it is not suitable for shading large areas.

【0007】この発明は、前記従来の問題点を解決する
ためになされたもので、その目的は、簡素で小型軽量化
が実現でき、しかも静穏で、広範な面積にも活用するこ
とのできる透光調整装置を提供することにある。
The present invention has been made in order to solve the above-mentioned problems of the prior art, and its purpose is to realize a simple, small-sized and lightweight structure, which is quiet and can be used in a wide area. It is to provide a light adjusting device.

【0008】[0008]

【課題を解決するための手段】前記目的を達成するた
め、請求項1の透光調整装置は、相対的に平行移動可能
に重なり合う固定側及び可動側の一対の偏光板と、前記
可動側の偏光板を固定側の偏光板に対し平行移動させる
静電アクチュエータとを備え、前記静電アクチュエータ
は、前記可動側の偏光板と一体化された透明な誘電性移
動体と、前記誘電性移動体と相対向し多相電圧が印加さ
れる透明な複数の電極部を、前記可動側の偏光板の移動
方向に沿って配置したステータとを含み、静電誘導によ
り前記誘電性移動体に分極を発生させ、可動側の偏光板
を移動させることを特徴とする。
In order to achieve the above object, a light transmission adjusting device according to a first aspect of the invention has a pair of fixed side and movable side polarizing plates which overlap each other so as to be relatively movable in parallel, and the movable side of the movable side. An electrostatic actuator for moving the polarizing plate in parallel with the fixed side polarizing plate, wherein the electrostatic actuator is a transparent dielectric moving body integrated with the movable side polarizing plate, and the dielectric moving body. A plurality of transparent electrode parts facing each other and to which a multi-phase voltage is applied, arranged along the moving direction of the movable side polarizing plate, and the dielectric moving body is polarized by electrostatic induction. It is characterized in that the polarizing plate on the movable side is generated and moved.

【0009】また、請求項2の透光調整装置は、請求項
1において、前記ステータ及び誘電性移動体は、透明板
内に形成された密封空間内に配設されることを特徴とす
る。
The light transmission adjusting device according to a second aspect of the present invention is characterized in that, in the first aspect, the stator and the dielectric moving body are disposed in a sealed space formed in a transparent plate.

【0010】[0010]

【作用】請求項1の透光調整装置にあっては、静電アク
チュエータを駆動源にし、この静電アクチュエータの誘
電性移動体と、相対的に平行移動を可能に重なり合う一
対の偏光板の内の可動側の偏光板とを一体化している。
According to another aspect of the present invention, there is provided a light transmission adjusting device, wherein an electrostatic actuator is used as a driving source, and a pair of polarizing plates overlaps with a dielectric moving body of the electrostatic actuator so as to be relatively movable. It is integrated with the movable side polarizing plate.

【0011】そして、前記誘電性移動体に対するステー
タ側に、誘電性移動体と相対向し、かつ可動側の偏光板
の移動方向に沿って配置された複数の電極部を設け、こ
の複数の電極部に多相電圧を印加する。
On the side of the stator relative to the dielectric moving body, there are provided a plurality of electrode portions facing the dielectric moving body and arranged along the moving direction of the polarizing plate on the movable side. A multi-phase voltage is applied to the part.

【0012】すると、静電誘導により誘電性移動体に分
極が発生し、誘電性移動体と共に可動側の偏光板が固定
側の偏光板に対し平行移動して透光量を調整することと
なる。
Then, polarization is generated in the dielectric moving body by electrostatic induction, and the movable side polarizing plate moves in parallel with the dielectric moving body relative to the fixed side polarizing plate to adjust the light transmission amount. .

【0013】したがって、モータ等に比し、簡素で小型
軽量化ができ、しかも静穏で、広範な面積であっても安
価に提供することができる。
Therefore, as compared with a motor or the like, it can be provided in a simpler, smaller size and lighter weight, and can be provided quietly and inexpensively even in a wide area.

【0014】また、請求項2の透光調整装置にあって
は、ステータ及び誘電性移動体が透明板内に形成された
密封空間内に配設されるため、静電アクチュエータが外
気の水分に影響されることなく、安定した動作状況を得
ることができ、動作の信頼性を確保することが可能であ
る。
Further, in the light transmission adjusting device of the second aspect, since the stator and the dielectric moving body are arranged in the sealed space formed in the transparent plate, the electrostatic actuator is exposed to moisture in the outside air. It is possible to obtain a stable operation status without being affected and to secure reliability of operation.

【0015】[0015]

【実施例】以下、本発明の好適な実施例について、図面
を参照して詳細に説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the drawings.

【0016】図1〜図8は、本発明の一実施例に係る透
光調整装置を用いた自動車のサンバイザを示す図であ
る。
1 to 8 are views showing a sun visor of an automobile using a light transmission adjusting device according to an embodiment of the present invention.

【0017】本実施例のサンバイザ10は、図1に示す
ように、一端を図示せぬ車体側に回動可能に取り付け、
他端側を水平方向で揺動可能にした支持アーム12に対
し、ヒンジ14を介しサンバイザ本体16を上下方向に
回動可能に取り付けるようにしている。
As shown in FIG. 1, the sun visor 10 of this embodiment has one end rotatably attached to a vehicle body (not shown).
The sun visor body 16 is attached via a hinge 14 to a support arm 12 of which the other end side can be horizontally swung so as to be vertically rotatable.

【0018】このサンバイザ本体16は、図2及び図3
に示すように、例えばアクリル等の合成樹脂からなる2
枚の透明板18a,18bを貼り合わせ、これら2枚の
透明板18a,18b間に密封空間20を形成するよう
にしている。
This sun visor body 16 is shown in FIGS.
As shown in, 2 made of synthetic resin such as acrylic
The transparent plates 18a and 18b are attached to each other so that a sealed space 20 is formed between the two transparent plates 18a and 18b.

【0019】そして、この密封空間20内に、固定側及
び可動側の一対の偏光板22及び24と、誘電性移動体
26及びステータ28から構成される静電アクチュエー
タ30とが組み込まれるようになっている。尚、透明板
18bの外周縁部には、遮光部19が形成され、周縁部
から光が透過しないようにしている。
A pair of polarizing plates 22 and 24 on the fixed side and the movable side and an electrostatic actuator 30 composed of a dielectric moving body 26 and a stator 28 are incorporated in the sealed space 20. ing. A light-shielding portion 19 is formed on the outer peripheral edge of the transparent plate 18b to prevent light from passing through the peripheral edge.

【0020】固定側及び可動側の一対の偏光板22,2
4は、それぞれフィルム状のものからなり、固定側の偏
光板22は、サンバイザ本体16を構成する透明板18
aへの内側面に貼り付け固定された状態となっており、
可動側の偏光板24は、静電アクチュエータ30を構成
する誘電性移動体26の片側面に貼り付け固定されて誘
電性移動体26と一体化され、これにより相対的に平行
移動可能に重なり合う状態となっている。
A pair of fixed and movable polarizing plates 22, 2
4 is made of a film-like material, and the fixed side polarizing plate 22 is a transparent plate 18 that constitutes the sun visor body 16.
It is in a state of being stuck and fixed on the inner surface to a,
The movable-side polarization plate 24 is attached and fixed to one side surface of the dielectric moving body 26 that constitutes the electrostatic actuator 30 and is integrated with the dielectric moving body 26, so that the movable polarizing plate 24 is relatively parallel and overlaps. Has become.

【0021】また、この固定側の偏光板22及び可動側
の偏光板24は、図7(a),(b)に示すように、縦
方向に偏光線の入った偏光面32と横方向に偏光線の入
った偏光面34を互い違いに固定側の偏光板22及び可
動側の偏光板24に設けたものである。尚、偏光面32
と偏光面34の幅の大きさは等しくaとなっている。
As shown in FIGS. 7 (a) and 7 (b), the fixed-side polarizing plate 22 and the movable-side polarizing plate 24 have a polarization plane 32 having a polarization line in the vertical direction and a polarization plane 32 in the horizontal direction. Polarization planes 34 containing polarization lines are alternately provided on the fixed-side polarizing plate 22 and the movable-side polarizing plate 24. The polarization plane 32
And the width of the polarization plane 34 is equal to a.

【0022】この2枚の固定側の偏光板22と可動側の
偏光板24を偏光面32あるいは偏光面34同士が完全
に同一面に重なり合うように配置した場合、第8図
(a)に示すように、太陽からの光線は透過し易い状態
つまり全開の状態となる。
FIG. 8 (a) shows the case where the two polarizing plates 22 on the fixed side and the polarizing plate 24 on the movable side are arranged so that the polarization planes 32 or 34 completely overlap each other on the same plane. Thus, the light rays from the sun are easily transmitted, that is, in a fully open state.

【0023】この状態から,図示せぬが一方向に可動側
の偏光板24をずらした場合、偏光面32の一部と偏光
面34の一部が重なり合う遮蔽面ができて、光線を透過
し難くしており、半開の状態となる。
From this state, when the polarizing plate 24 on the movable side is displaced in one direction (not shown), a shielding surface where a part of the polarization surface 32 and a part of the polarization surface 34 overlap is formed, and the light beam is transmitted. It is difficult, and it is in a half-open state.

【0024】そして、さらに可動側の偏光板24をさら
にずらし、最初の重なり合う状態から偏光面32,34
の幅aだけずらすと、図8(b)に示すように偏光面3
2と偏光面34が完全に重なり合い、全てが遮蔽面36
となり、光線をほとんど透過せず遮蔽する状態つまり閉
の状態となる。尚、偏光面32,34の幅aを小さく設
定することによって、素早い遮光変化が得られることと
なると同時に、縦横の縞も見苦しくなくすることが可能
である。
Then, the movable-side polarizing plate 24 is further shifted, and the polarization planes 32 and 34 are moved from the first overlapping state.
When the width a is shifted, the plane of polarization 3
2 and the polarization plane 34 completely overlap each other, and all of them are shield planes 36.
Therefore, it is in a closed state, that is, it blocks almost no light rays. By setting the width a of the polarization planes 32 and 34 to be small, quick light-shielding change can be obtained, and at the same time, vertical and horizontal stripes can be made unobtrusive.

【0025】静電アクチュエータ30を構成する誘電性
移動体26は、透明な絶縁体で、前述のように可動側の
偏光板24と一体化されることにより、可動側の偏光板
24を固定側の偏光板22に対し平行移動させるように
なっている。
The dielectric moving body 26 constituting the electrostatic actuator 30 is a transparent insulator, and is integrated with the movable side polarizing plate 24 as described above, so that the movable side polarizing plate 24 is fixed. It is adapted to be moved in parallel with the polarizing plate 22 of.

【0026】静電アクチュエータ30を構成するステー
タ28は、図3及び図4に示すように、3相(A相,B
相,C相とする)のパルス電圧が印加される複数の電極
部38を有し、この電極部38の配置方向に沿って絶縁
性の誘電性移動体26を移動させるようになっている。
As shown in FIGS. 3 and 4, the stator 28 forming the electrostatic actuator 30 has three phases (A phase, B phase).
Phase, C phase) is applied to a plurality of electrode portions 38, and the insulating dielectric moving body 26 is moved along the arrangement direction of the electrode portions 38.

【0027】具体的には、電極部38は、サンバイザ本
体16を構成する透明板18bの内側面上下方向全体に
わたって形成され、誘電性移動体26と相対向した状態
となっている。また、複数の電極部38は、透明板18
bの横方向にわって配置され、誘電性移動体26を横方
向に移動可能にしている。さらに、各電極部38は、透
明で導電性を有する電極40,42,44が上下方向に
わたって設けてあり、図4に示すように、電極40及び
42は櫛歯状の形状で相互に入り組ませてあり、電極4
4は、電極40及び42の中間に独立して設けてある。
これら各電極40,42,44は等間隔に設けてあり、
また電極40,42,44の幅と隣接する電極でない部
分も電極の幅とほぼ等しく設定されている。尚、各電極
40,42,44は、合成樹脂等の透明な絶縁膜29で
覆われるようになっている。また、これらの各電極4
0,42,44は図1に示す制御回路46に結線される
ようになっている。尚、この制御回路46は、サンバイ
ザ本体16に一体に設けられている。
Specifically, the electrode portion 38 is formed over the entire inner surface vertical direction of the transparent plate 18b constituting the sun visor body 16, and is in a state of facing the dielectric moving body 26. In addition, the plurality of electrode portions 38 are provided on the transparent plate 18.
It is arranged across the horizontal direction of b and allows the dielectric moving body 26 to move in the horizontal direction. Further, in each electrode portion 38, transparent and conductive electrodes 40, 42, 44 are provided in the vertical direction. As shown in FIG. 4, the electrodes 40 and 42 are interdigitated in a comb-like shape. No, electrode 4
4 is independently provided between the electrodes 40 and 42.
These electrodes 40, 42, 44 are provided at equal intervals,
The width of the electrodes 40, 42, 44 and the non-adjacent portions of the electrodes are also set to be substantially equal to the width of the electrodes. The electrodes 40, 42, 44 are covered with a transparent insulating film 29 made of synthetic resin or the like. In addition, each of these electrodes 4
0, 42 and 44 are connected to the control circuit 46 shown in FIG. The control circuit 46 is provided integrally with the sun visor body 16.

【0028】この制御回路46は、発振器48と,分配
器50と,高耐圧スイッチ素子52と、高電圧電源54
a,54b,54cを備え、かつA相,B相,C相に対
応した3本の出力端子56a,56b,56cが設けら
れている。そして、例えば、高電圧電源で1kgVから
500Vの高電圧が供給され、かつ信号線より制御かろ
46に信号が入力されると、制御回路46が作動し3本
の出力端子56a,56b,56cには、1kgV〜5
00Vの+,−,0の高電圧が必要時間出力され、電極
40,42,44の各相に図5に示すように分配される
状態になっている。
The control circuit 46 includes an oscillator 48, a distributor 50, a high breakdown voltage switch element 52, and a high voltage power source 54.
Three output terminals 56a, 56b, 56c, which are provided with a, 54b, 54c and correspond to the A phase, B phase, and C phase, are provided. Then, for example, when a high voltage of 1 kgV to 500 V is supplied by the high voltage power source and a signal is input to the control shaft 46 from the signal line, the control circuit 46 operates and the three output terminals 56a, 56b, 56c are supplied. Is 1 kgV to 5
A high voltage of +,-, 0 of 00V is output for a required time and is distributed to each phase of the electrodes 40, 42, 44 as shown in FIG.

【0029】そして、ステータ28上に配置された電極
40,42,44に多相電圧を印加すると、これらの各
電極40,42,44に対向する誘電性移動体26の面
に静電誘導により分極を生じさせる(図5(a)照)。
次いで、この状態から同図(b)に示すように、各電極
に印加する電圧を変化させると、分極により生じた各電
荷と各電極40,42,44との間で吸引力あるいは反
発力が作用し、誘電性移動体26が一定方向(右方向)
に電極間距離だけ移動する状態になっている。
When a multiphase voltage is applied to the electrodes 40, 42, 44 arranged on the stator 28, electrostatic induction is applied to the surface of the dielectric moving body 26 facing the electrodes 40, 42, 44. It causes polarization (see FIG. 5 (a)).
Next, when the voltage applied to each electrode is changed from this state as shown in FIG. 6B, the attractive force or repulsive force is generated between each charge generated by the polarization and each electrode 40, 42, 44. The dielectric moving body 26 acts in a fixed direction (to the right).
It is in a state of moving by the distance between the electrodes.

【0030】したがって、誘電性移動体26が一定方向
に移動することにより、この誘電性移動体26と一体の
可動側偏光板24が固定側の偏光板22に対して移動す
ることとなり、一対の偏光板22,24の偏光面32,
34の組み合わせを変化させ、8(a)〜同図(b)の
状態間で光の透過量を変化させることとなる。
Therefore, when the dielectric moving body 26 moves in a fixed direction, the movable side polarizing plate 24 integrated with the dielectric moving body 26 moves with respect to the fixed side polarizing plate 22. Polarizing planes 32 of the polarizing plates 22 and 24,
By changing the combination of 34, the amount of light transmission is changed between the states 8 (a) to (b).

【0031】このように静電アクチュエータ30の誘電
性移動体26と、可動側の偏光板24を一体化させ、誘
電性移動体26を介して可動側の偏光板24を固定側の
偏光板22に対し平行移動させることにより、光の透過
量を調整することとしているため、電動モータ等に比し
簡素で小型軽量化ができ、しかも静穏で、広範な面積の
ものでも安価に提供することが可能となる。
In this way, the dielectric moving body 26 of the electrostatic actuator 30 and the movable side polarizing plate 24 are integrated, and the movable side polarizing plate 24 is fixed via the dielectric moving body 26. Since the amount of transmitted light is adjusted by moving the lens in parallel, it can be simpler, smaller and lighter than electric motors, etc., and it is quiet, and it can be provided at low cost even in a wide area. It will be possible.

【0032】また、静電アクチュエータ30を構成する
誘電性移動体26及びステータ28を透明板18a,1
8b間に形成した密封空間20内に配置することによ
り、外気と確実に遮断し、静電アクチュエータ30の動
作信頼性を向上させることが可能となる。また、同時に
埃等の侵入を防止して摺動部分の傷付きを防止すること
により大要製を向上させることも可能である。更に、制
御回路46をサンバイザ本体16に一体化することによ
り、高電圧の配線が装置内のみにとどめられ、配線の繁
雑さや、危険、更には高電圧のリーク等の問題も未然に
防止することが可能となる。
Further, the dielectric moving body 26 and the stator 28 constituting the electrostatic actuator 30 are connected to the transparent plates 18a, 1a.
By arranging it in the sealed space 20 formed between 8b, it is possible to reliably block the outside air and improve the operational reliability of the electrostatic actuator 30. At the same time, it is possible to improve the manufacturing cost by preventing the entry of dust and the like to prevent the sliding portion from being scratched. Further, by integrating the control circuit 46 with the sun visor body 16, high-voltage wiring can be kept only inside the device, and problems such as complexity of wiring, danger, and high-voltage leakage can be prevented. Is possible.

【0033】尚、図1及び図2において、符号60は電
源及び信号線で、支持アーム12の中空部内を貫通して
制御回路46に導かれている。
In FIGS. 1 and 2, reference numeral 60 denotes a power source and a signal line, which penetrates the hollow portion of the support arm 12 and is guided to the control circuit 46.

【0034】本発明は、前記実施例に限定されるもので
はなく、本発明の要旨の範囲内において種々の変形実施
が可能である。
The present invention is not limited to the above embodiments, but various modifications can be made within the scope of the gist of the present invention.

【0035】例えば、本実施例においては、自動車用の
サンバイザに透光調整装置を用いた例を示したが、この
例に限らず、例えば車両用のサンルーフ,リアウィン
ド,サイドウィンドあるいはルームミラーの遮光用とし
て、本発明の透光調整装置を用いることも可能である。
For example, in the present embodiment, an example in which a light transmission adjusting device is used for a sun visor for an automobile has been shown, but the present invention is not limited to this example, and for example, for a sun roof, a rear window, a side window or a rearview mirror for a vehicle. It is also possible to use the light transmission adjusting device of the present invention for shading.

【0036】[0036]

【発明の効果】以上説明したように、請求項1の透光調
整装置にあっては、相対的に平行移動可能に重なり合う
固定側及び可動側の一対の偏光板と、可動側の偏光板を
固定側の偏光側の偏光板に対し平行移動させる静電アク
チュエータとを備えることにより、静電アクチュエータ
のステータ側に配した複数の電極部に多相電圧を印加
し、静電誘導により誘電性移動体に分極を発生させ、誘
電性移動体を介して可動側の偏光板を移動させることが
でき、その結果簡素で小型軽量化が実現でき、しかも静
穏で広範な面積のものでも安価に提供することができる
という効果がある。
As described above, in the light transmission adjusting device according to the first aspect, the pair of fixed and movable polarizing plates, which overlap each other so as to be movable in parallel, and the movable polarizing plate, are provided. By including an electrostatic actuator that moves parallel to the polarization plate on the fixed polarization side, a multiphase voltage is applied to the multiple electrode parts placed on the stator side of the electrostatic actuator, and the dielectric movement is caused by electrostatic induction. The polarization can be generated in the body, and the movable side polarizing plate can be moved through the dielectric moving body. As a result, it is possible to realize simple, small size and light weight, and also to provide quiet and wide area at low cost. The effect is that you can.

【0037】また、請求項2の透光調整装置にあって
は、ステータ及び誘電性移動体を透明板内に形成した密
封空間内に配設することにより、静電アクチュエータと
外気とを遮断し、外気の水分に影響を受けることなく確
実な動作状態を得ることができ、動作の信頼性を向上さ
せることができるという効果がある。
Further, in the light transmission adjusting device of the second aspect, the electrostatic actuator and the outside air are shut off by disposing the stator and the dielectric moving body in the sealed space formed in the transparent plate. Therefore, it is possible to obtain a reliable operation state without being affected by the moisture in the outside air, and it is possible to improve the reliability of the operation.

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

【図1】本発明の一実施例にかかる透光調整装置を用い
たサンバイザの正面図である。
FIG. 1 is a front view of a sun visor using a light transmission adjusting device according to an embodiment of the present invention.

【図2】図1のA−A線に沿う断面図である。FIG. 2 is a sectional view taken along the line AA of FIG.

【図3】図1のB−B線に沿う断面図である。3 is a cross-sectional view taken along the line BB of FIG.

【図4】ステータの電極部の状態を示す正面図である。FIG. 4 is a front view showing a state of an electrode portion of a stator.

【図5】同図(a)は静電アクチュエータの構造を示す
図、同図(b)はその動作原理を示す図である。
5A is a diagram showing the structure of an electrostatic actuator, and FIG. 5B is a diagram showing the operating principle thereof.

【図6】制御回路の説明図である。FIG. 6 is an explanatory diagram of a control circuit.

【図7】同図(a)は可動側の偏光板を示す図で、同図
(b)は固定側の偏光板を示す図である。
FIG. 7 (a) is a diagram showing a movable-side polarizing plate, and FIG. 7 (b) is a diagram showing a fixed-side polarizing plate.

【図8】同図(a)透光時における一対の偏光板の状態
を示す図で、同図(b)は完全遮光時における一対の偏
光板の状態を示す図である。
FIG. 8A is a diagram showing a state of a pair of polarizing plates when transmitting light, and FIG. 8B is a diagram showing a state of a pair of polarizing plates when completely shielded from light.

【符号の説明】[Explanation of symbols]

10 サンバイザ 16 サンバイザ本体 18a,18b 透明板 20 密封空間 22 固定側の偏光板 24 可動側の偏光板 26 誘電性移動体 28 ステータ 30 静電アクチュエータ 38 電極部 10 sun visor 16 sun visor body 18a, 18b transparent plate 20 sealed space 22 fixed side polarizing plate 24 movable side polarizing plate 26 dielectric moving body 28 stator 30 electrostatic actuator 38 electrode section

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 相対的に平行移動可能に重なり合う固定
側及び可動側の一対の偏光板と、 前記可動側の偏光板を固定側の偏光板に対し平行移動さ
せる静電アクチュエータとを備え、 前記静電アクチュエータは、 前記可動側の偏光板と一体化された透明な誘電性移動体
と、 前記誘電性移動体と相対向し多相電圧が印加される透明
な複数の電極部を、前記可動側の偏光板の移動方向に沿
って配置したステータとを含み、 静電誘導により前記誘電性移動体に分極を発生させ、可
動側の偏光板を移動させることを特徴とする透光調整装
置。
1. A pair of fixed-side and movable-side polarizing plates that overlap with each other so that they can move in parallel relative to each other, and an electrostatic actuator that moves the movable-side polarizing plate in parallel with the fixed-side polarizing plate, The electrostatic actuator includes a transparent dielectric moving body integrated with the movable-side polarizing plate, and a plurality of transparent electrode portions facing the dielectric moving body and to which a multiphase voltage is applied. And a stator arranged along the moving direction of the polarizing plate on the side, wherein polarization is generated in the dielectric moving body by electrostatic induction, and the polarizing plate on the movable side is moved.
【請求項2】 請求項1において、 前記ステータ及び誘電性移動体は、透明板内に形成され
た密封空間内に配設されることを特徴とする透光調整装
置。
2. The light transmission adjusting device according to claim 1, wherein the stator and the dielectric moving body are arranged in a sealed space formed in a transparent plate.
JP4235230A 1992-08-11 1992-08-11 Light transmission adjustment device Expired - Fee Related JP2638717B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4235230A JP2638717B2 (en) 1992-08-11 1992-08-11 Light transmission adjustment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4235230A JP2638717B2 (en) 1992-08-11 1992-08-11 Light transmission adjustment device

Publications (2)

Publication Number Publication Date
JPH0659201A true JPH0659201A (en) 1994-03-04
JP2638717B2 JP2638717B2 (en) 1997-08-06

Family

ID=16983011

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4235230A Expired - Fee Related JP2638717B2 (en) 1992-08-11 1992-08-11 Light transmission adjustment device

Country Status (1)

Country Link
JP (1) JP2638717B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0720037A2 (en) * 1994-12-29 1996-07-03 Asmo Co., Ltd. Light transmittance adjusting apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61285419A (en) * 1985-06-13 1986-12-16 Seiko Epson Corp Optical writing printer
JPS62280711A (en) * 1986-05-29 1987-12-05 Nippon Denso Co Ltd Adjusting device for quantity of light transmission
JPS6395868A (en) * 1986-10-13 1988-04-26 Canon Inc Electrostatic actuator
JPH03270682A (en) * 1990-03-19 1991-12-02 Yaskawa Electric Corp Electrostatic actuator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61285419A (en) * 1985-06-13 1986-12-16 Seiko Epson Corp Optical writing printer
JPS62280711A (en) * 1986-05-29 1987-12-05 Nippon Denso Co Ltd Adjusting device for quantity of light transmission
JPS6395868A (en) * 1986-10-13 1988-04-26 Canon Inc Electrostatic actuator
JPH03270682A (en) * 1990-03-19 1991-12-02 Yaskawa Electric Corp Electrostatic actuator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0720037A2 (en) * 1994-12-29 1996-07-03 Asmo Co., Ltd. Light transmittance adjusting apparatus
EP0720037A3 (en) * 1994-12-29 1996-12-04 Asmo Co Ltd Light transmittance adjusting apparatus
US5905589A (en) * 1994-12-29 1999-05-18 Asmo Co., Ltd. Light transmittance adjusting apparatus

Also Published As

Publication number Publication date
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