JPH01111226U - - Google Patents
Info
- Publication number
- JPH01111226U JPH01111226U JP596888U JP596888U JPH01111226U JP H01111226 U JPH01111226 U JP H01111226U JP 596888 U JP596888 U JP 596888U JP 596888 U JP596888 U JP 596888U JP H01111226 U JPH01111226 U JP H01111226U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- brightness
- sensor
- surrounding environment
- light reflectance
- 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
Links
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案のＥＣミラーの光反射率制御装
置の一実施例を示す回路図であり、自動車の前方
及び後方を含む周囲環境の明るさをそれぞれ検出
する２個のセンサーが配置されている。第２図は
第１図の２個のセンサーの出力特性図、第３図は
ＥＣミラーのエレクトロクロミツク素子の構造を
示す概略図である。
２０，２２……センサー、２４，２８，３２，
３６……比較器、２６，３０，３４，３８……設
定電圧発生回路、４０，４２，４４……ＡＮＤゲ
ート、４６……ＯＲゲート、５０……リレー、５
２……エレクトロクロミツク素子、５４……リレ
ー接点、５６……定電圧回路。
FIG. 1 is a circuit diagram showing an embodiment of the EC mirror light reflectance control device of the present invention, in which two sensors are arranged to detect the brightness of the surrounding environment including the front and rear of the vehicle. There is. FIG. 2 is a diagram showing the output characteristics of the two sensors shown in FIG. 1, and FIG. 3 is a schematic diagram showing the structure of the electrochromic element of the EC mirror. 20, 22...sensor, 24, 28, 32,
36... Comparator, 26, 30, 34, 38... Setting voltage generation circuit, 40, 42, 44... AND gate, 46... OR gate, 50... Relay, 5
2... Electrochromic element, 54... Relay contact, 56... Constant voltage circuit.
Claims (1)
覆う状態に配設し、エレクトロクロミツク素子に
異なる電圧を与えて異なる着色状態にすることに
よりミラーの光反射率を変化させるように構成さ
れた光反射率制御装置であつて、自動車の前方を
含む周囲環境の明るさを検出してその明るさに応
じた電気信号を出力する第１のセンサーと、自動
車の後方を含む周囲環境の明るさを検出してその
明るさに応じた電気信号を出力する第２のセンサ
ーと、前記周囲環境の異なる明るさに対応する異
なる参照信号を発生させる手段をそれぞれ備え前
記各センサーの出力信号と前記参照信号発生手段
からの異なる参照信号とをそれぞれ比較してその
比較値に対応した複数の論理信号をそれぞれ出力
する複数の比較器からなる比較回路と、前記比較
回路からの論理信号に基づいて前記エレクトロク
ロミツク素子に異なる電圧を選択的に印加する手
段とを備えた光反射率制御装置において、前記電
圧印加手段はバツテリーと、バツテリーの電圧を
分割するように配置された分圧抵抗を備える定電
圧回路と、前記第２のセンサーに対応する各比較
器からの論理信号に応答して前記定電圧回路の分
圧抵抗を変化させる手段とを含み、更に前記定電
圧回路の出力電圧がある特定の電圧からより小さ
い電圧に変化された場合には前記複数の論理信号
に基づき前記エレクトロクロミツク素子に前記よ
り小さい電圧を印加する前に、一定の短い時間だ
け、前記エレクトロクロミツク素子を短絡させる
手段を備えていることを特徴とするＥＣミラーの
光反射率制御装置。 A light reflectance device configured to change the light reflectance of the mirror by disposing an electrochromic element to cover the reflective surface of the mirror and applying different voltages to the electrochromic element to create different colored states. The control device includes a first sensor that detects the brightness of the surrounding environment including the area in front of the car and outputs an electrical signal according to the brightness, and a first sensor that detects the brightness of the surrounding environment including the area behind the car. a second sensor that outputs an electrical signal corresponding to the brightness of the surrounding environment; and means for generating different reference signals corresponding to different brightnesses of the surrounding environment; output signals of the respective sensors and the reference signal generating means; a comparator circuit comprising a plurality of comparators that respectively compare different reference signals from the comparator and output a plurality of logic signals corresponding to the comparison values; In the light reflectance control device, the voltage applying means includes a battery, a constant voltage circuit including a voltage dividing resistor arranged to divide the voltage of the battery, and means for changing the voltage dividing resistance of the constant voltage circuit in response to a logic signal from each comparator corresponding to the second sensor; and means for short-circuiting the electrochromic element for a predetermined short period of time before applying the smaller voltage to the electrochromic element based on the plurality of logic signals when the voltage is changed to a smaller voltage. A light reflectance control device for an EC mirror, characterized in that:
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP596888U JPH0641218Y2 (en) | 1988-01-22 | 1988-01-22 | EC mirror light reflectance control device |
| EP88102750A EP0280278B1 (en) | 1987-02-27 | 1988-02-24 | Light-reflectivity controller for use with automotive rearview mirror using electrochromic element |
| DE88102750T DE3886788T2 (en) | 1987-02-27 | 1988-02-24 | Device for controlling the reflectivity of an electrochromic vehicle rear-view mirror. |
| US07/161,482 US4896030A (en) | 1987-02-27 | 1988-02-29 | Light-reflectivity controller for use with automotive rearview mirror using electrochromic element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP596888U JPH0641218Y2 (en) | 1988-01-22 | 1988-01-22 | EC mirror light reflectance control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01111226U true JPH01111226U (en) | 1989-07-26 |
| JPH0641218Y2 JPH0641218Y2 (en) | 1994-10-26 |
Family
ID=31209803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP596888U Expired - Lifetime JPH0641218Y2 (en) | 1987-02-27 | 1988-01-22 | EC mirror light reflectance control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0641218Y2 (en) |
-
1988
- 1988-01-22 JP JP596888U patent/JPH0641218Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0641218Y2 (en) | 1994-10-26 |
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