JPS61174323U - - Google Patents
Info
- Publication number
- JPS61174323U JPS61174323U JP5746485U JP5746485U JPS61174323U JP S61174323 U JPS61174323 U JP S61174323U JP 5746485 U JP5746485 U JP 5746485U JP 5746485 U JP5746485 U JP 5746485U JP S61174323 U JPS61174323 U JP S61174323U
- Authority
- JP
- Japan
- Prior art keywords
- amount
- light amount
- windshield
- transmitted light
- detection signal
- 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
- 238000001514 detection method Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000004973 liquid crystal related substance Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 1
Description
第１図はこの考案に係るフロントガラスの透過
光量可変装置の実施例を示す回路図でフロントガ
ラス部は模式的に示す、第２図は同上実施例にお
ける光量センサの取付位置を模式的に示す図、第
３図は同上光量センサの入射光照度対出力検出電
圧特性を示す特性図、第４図は透過量制御部にお
けるリニアアンプの入・出力特性を示す特性図、
第５図は同上透過量制御部における複数個のシユ
ミツトトリガ回路の動作点特性を示す特性図であ
る。
１：光量検出部、２：透過量制御部、３：透過
光量可変手段、４：フロントガラス、４ａ，４ｂ
：ガラス板、８：液晶層、９ａ，９ｂ，９ｃ：透
明電極、１０：透明対極、Ｄ１，Ｄ２：光量セン
サ、ＳＴ１，ＳＴ２：シユミツトトリガ回路。
Fig. 1 is a circuit diagram showing an embodiment of the device for varying the amount of light transmitted through a windshield according to this invention, and the windshield portion is schematically shown, and Fig. 2 is a schematic diagram showing the mounting position of the light amount sensor in the same embodiment. 3 is a characteristic diagram showing the incident light illuminance vs. output detection voltage characteristic of the light amount sensor, and FIG. 4 is a characteristic diagram showing the input/output characteristics of the linear amplifier in the transmission amount control section.
FIG. 5 is a characteristic diagram showing operating point characteristics of a plurality of Schmitt trigger circuits in the transmission amount control section. 1: Light amount detection section, 2: Transmission amount control section, 3: Transmission light amount variable means, 4: Windshield, 4a, 4b
: glass plate, 8: liquid crystal layer, 9a, 9b, 9c: transparent electrode, 10: transparent counter electrode, D 1 , D 2 : light amount sensor, ST 1 , ST 2 : Schmitt trigger circuit.
Claims (1)
量を検出しこの光量に応じた検出信号を出力する
光量検出部と、前記フロントガラスに組込まれた
透過光量可変手段と、前記光量検出部からの検出
信号により前記透過光量可変手段を制御する制御
信号を出力する透過量制御部とを具備してなるこ
とを特徴とするフロントガラスの透過光量可変装
置。 ２ 透過量制御部には光量検出部からの検出信号
を共通に入力し異なつた検出信号レベルでそれぞ
れ“Ｈ”レベルの制御信号を出力する複数個のシ
ユミツトトリガ回路が並設され、透過光量可変手
段は少なくとも前記複数個のシユミツトトリガ回
路に対応した個数の透明電極を有する液晶ユニツ
トである実用新案登録請求の浪囲第１項記載のフ
ロントガラスの透過光量可変装置。[Scope of Claim for Utility Model Registration] 1. A light amount detection section that detects the amount of light projected onto the windshield from the outside of the vehicle and outputs a detection signal according to this light amount, and a transmitted light amount variable means incorporated in the windshield; A device for varying the amount of transmitted light through a windshield, comprising: a transmission amount control section that outputs a control signal for controlling the transmitted light amount variable means based on a detection signal from the light amount detection section. 2. The transmission amount control section is provided with a plurality of Schmitt trigger circuits that commonly input the detection signal from the light amount detection section and output "H" level control signals at different detection signal levels, and the transmitted light amount variable means. The device for varying the amount of transmitted light transmitted through a windshield according to claim 1, wherein is a liquid crystal unit having at least a number of transparent electrodes corresponding to the plurality of Schmitt trigger circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5746485U JPS61174323U (en) | 1985-04-19 | 1985-04-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5746485U JPS61174323U (en) | 1985-04-19 | 1985-04-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61174323U true JPS61174323U (en) | 1986-10-30 |
Family
ID=30582019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5746485U Pending JPS61174323U (en) | 1985-04-19 | 1985-04-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61174323U (en) |
-
1985
- 1985-04-19 JP JP5746485U patent/JPS61174323U/ja active Pending
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