JPS55140620A - Light controller for car - Google Patents
Light controller for carInfo
- Publication number
- JPS55140620A JPS55140620A JP4511179A JP4511179A JPS55140620A JP S55140620 A JPS55140620 A JP S55140620A JP 4511179 A JP4511179 A JP 4511179A JP 4511179 A JP4511179 A JP 4511179A JP S55140620 A JPS55140620 A JP S55140620A
- Authority
- JP
- Japan
- Prior art keywords
- lamp
- light
- comparator
- output
- relay
- 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
Landscapes
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
PURPOSE: To automatize the switching operation of automobile lights by providing a control circuit for electronically opening/closing a lamp circuit such as head lamp or side lamp in accordance with the detection signal from optical sensor for detecting the ambient brightness optically.
CONSTITUTION: Upon detection of exterior light by the illuminance sensor 1 when the ignition switch SW1, and the light switch SW2 are closed, said output is provided through an amplifier 3 to the first comparator 4 where it is compared with referential voltage VR. Said comparison output is integrated by an integrating circuit 5, then compared again with referential voltage VR by second comparator 6. In order to prevent erroneous function due to external disturbance light or the chattering of relay RY, operational hysteresis is provided to the switching command of transistor Q thereby transistor Q is turned on when the output of the comparator 6 is "1" thus to close (a)-contact of relay RY and to light the lamp L.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4511179A JPS55140620A (en) | 1979-04-13 | 1979-04-13 | Light controller for car |
US06/138,528 US4376909A (en) | 1979-04-13 | 1980-04-09 | Automatic light control for automotive vehicles |
DE3014048A DE3014048C2 (en) | 1979-04-13 | 1980-04-11 | Device for automatic light control on motor vehicles |
GB8012055A GB2050091B (en) | 1979-04-13 | 1980-04-11 | Automatic light control for automotive vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4511179A JPS55140620A (en) | 1979-04-13 | 1979-04-13 | Light controller for car |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55140620A true JPS55140620A (en) | 1980-11-04 |
Family
ID=12710148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4511179A Pending JPS55140620A (en) | 1979-04-13 | 1979-04-13 | Light controller for car |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55140620A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57170333U (en) * | 1981-04-23 | 1982-10-27 | ||
JPS57174249U (en) * | 1981-04-30 | 1982-11-02 | ||
JPS59109543U (en) * | 1983-01-14 | 1984-07-24 | クラリオン株式会社 | Automotive lighting circuit |
JPS59132435U (en) * | 1983-02-25 | 1984-09-05 | 富士バルブ株式会社 | Automobile headlight automatic extinguishing device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS45124Y1 (en) * | 1965-12-23 | 1970-01-07 |
-
1979
- 1979-04-13 JP JP4511179A patent/JPS55140620A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS45124Y1 (en) * | 1965-12-23 | 1970-01-07 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57170333U (en) * | 1981-04-23 | 1982-10-27 | ||
JPS6324027Y2 (en) * | 1981-04-23 | 1988-07-01 | ||
JPS57174249U (en) * | 1981-04-30 | 1982-11-02 | ||
JPS59109543U (en) * | 1983-01-14 | 1984-07-24 | クラリオン株式会社 | Automotive lighting circuit |
JPS59132435U (en) * | 1983-02-25 | 1984-09-05 | 富士バルブ株式会社 | Automobile headlight automatic extinguishing device |
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