JPS54108320A - Device for preventing fog generated on the wind shield pane in motor vehicle - Google Patents
Device for preventing fog generated on the wind shield pane in motor vehicleInfo
- Publication number
- JPS54108320A JPS54108320A JP1578578A JP1578578A JPS54108320A JP S54108320 A JPS54108320 A JP S54108320A JP 1578578 A JP1578578 A JP 1578578A JP 1578578 A JP1578578 A JP 1578578A JP S54108320 A JPS54108320 A JP S54108320A
- Authority
- JP
- Japan
- Prior art keywords
- window pane
- motor vehicle
- electric poles
- oscillator
- reference value
- 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
Abstract
PURPOSE: To remove fog automatically from the window pane in a motor vehicle under a combination of a pair of electric poles, a switching circuit and a humidity removing mechanism.
CONSTITUTION: A switching circuit comprising an oscillatot 2, a frequency discriminator 3 and output part 4 is connected to a sensor 1 comprising a pair of spaced apart comb shaped metal foil electric poles 13, 13' on the inner surface of the passenger room i.e. the window pane 12. When fogs are generated in the window pane 12, an electrostatic capacity between the electric poles 13, 13' is largely varied, an oscillation frequency of the oscillator 2 comprising a calculation amplifier OPI and resistors R1 to R3 and R7, R8 is varied in response to the variation of the electrostatic capacity, two triggers are activated, a frequency discriminator 3 connected in series with stable multivibrators, 6, 6' discriminates if the output from the oscillator 2 is higher or lower than a reference value, and when higher than the reference value, an energization signal is transmitted to the humidity removal mechanism.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1578578A JPS54108320A (en) | 1978-02-14 | 1978-02-14 | Device for preventing fog generated on the wind shield pane in motor vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1578578A JPS54108320A (en) | 1978-02-14 | 1978-02-14 | Device for preventing fog generated on the wind shield pane in motor vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54108320A true JPS54108320A (en) | 1979-08-24 |
Family
ID=11898474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1578578A Pending JPS54108320A (en) | 1978-02-14 | 1978-02-14 | Device for preventing fog generated on the wind shield pane in motor vehicle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54108320A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4519443A (en) * | 1980-10-31 | 1985-05-28 | Diesel Kiki Kabushiki Kaisha | Window pane defroster device with vehicle air conditioning apparatus |
WO1988000143A1 (en) * | 1986-06-26 | 1988-01-14 | Tokai Rika Denki Seisakusho, Ltd. | Optical viewing device for vehicle |
JPS636965U (en) * | 1986-06-26 | 1988-01-18 | ||
JPS636967U (en) * | 1986-06-26 | 1988-01-18 | ||
JPS636966U (en) * | 1986-06-26 | 1988-01-18 | ||
JPS636964U (en) * | 1986-06-26 | 1988-01-18 |
-
1978
- 1978-02-14 JP JP1578578A patent/JPS54108320A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4519443A (en) * | 1980-10-31 | 1985-05-28 | Diesel Kiki Kabushiki Kaisha | Window pane defroster device with vehicle air conditioning apparatus |
WO1988000143A1 (en) * | 1986-06-26 | 1988-01-14 | Tokai Rika Denki Seisakusho, Ltd. | Optical viewing device for vehicle |
JPS636965U (en) * | 1986-06-26 | 1988-01-18 | ||
JPS636967U (en) * | 1986-06-26 | 1988-01-18 | ||
JPS636966U (en) * | 1986-06-26 | 1988-01-18 | ||
JPS636964U (en) * | 1986-06-26 | 1988-01-18 | ||
JPH0318296Y2 (en) * | 1986-06-26 | 1991-04-17 |
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