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JPS5559041A - Automatic dewing-proof device - Google Patents

Automatic dewing-proof device

Info

Publication number
JPS5559041A
JPS5559041A JP13166878A JP13166878A JPS5559041A JP S5559041 A JPS5559041 A JP S5559041A JP 13166878 A JP13166878 A JP 13166878A JP 13166878 A JP13166878 A JP 13166878A JP S5559041 A JPS5559041 A JP S5559041A
Authority
JP
Japan
Prior art keywords
glass
circuit
thirmister
falling
glass surface
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
Application number
JP13166878A
Other languages
Japanese (ja)
Inventor
Minoru Aoki
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.)
Renesas Eastern Japan Semiconductor Inc
Hitachi Iruma Electronic Co Ltd
Original Assignee
Hitachi Tohbu Semiconductor Ltd
Hitachi Iruma Electronic 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 Hitachi Tohbu Semiconductor Ltd, Hitachi Iruma Electronic Co Ltd filed Critical Hitachi Tohbu Semiconductor Ltd
Priority to JP13166878A priority Critical patent/JPS5559041A/en
Publication of JPS5559041A publication Critical patent/JPS5559041A/en
Pending legal-status Critical Current

Links

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  • Control Of Non-Electrical Variables (AREA)

Abstract

PURPOSE: To automatically prevent a dew-falling on a glass surface, by operating a heater when tarnish on a glass is detected in such a method as detects a temperature difference happened due to the falling of dews on a glass surface.
CONSTITUTION: A thirmister 9 in a paste, wiring, and lead-out electrodes 10 are formed by printing on an indoor surface of a glass 6, a thirmister being produced as a result of said work being sintered. Meanwhile, a heating wire 7 and lead-out electrodes 8 are provided at the inside of the glass 6 to form a heater. A potential dividing circuit conprises a resistance Rs of the thirmister and a fixed resistance Ro, a glass surface temperature being converted into a voltage signal thereat. The signal is then supplied via an amplifying circuit 1 and a sampling hold circuit 2 to an operation amplifying circuit 3 whereat changes in the amount at intervals of a given time are detected. Afterwards, a voltage comparing circuit 4 compares said changes in the amount with a reference voltage established in proportion to the rise in temperature due to the falling of dews on the glass surface, its decision output being applied as a set input of a flip-flop circuit 5.
COPYRIGHT: (C)1980,JPO&Japio
JP13166878A 1978-10-27 1978-10-27 Automatic dewing-proof device Pending JPS5559041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13166878A JPS5559041A (en) 1978-10-27 1978-10-27 Automatic dewing-proof device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13166878A JPS5559041A (en) 1978-10-27 1978-10-27 Automatic dewing-proof device

Publications (1)

Publication Number Publication Date
JPS5559041A true JPS5559041A (en) 1980-05-02

Family

ID=15063427

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13166878A Pending JPS5559041A (en) 1978-10-27 1978-10-27 Automatic dewing-proof device

Country Status (1)

Country Link
JP (1) JPS5559041A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5672713A (en) * 1979-11-16 1981-06-17 Marcon Electronics Co Ltd Humidity controller
JPS57110612U (en) * 1980-12-24 1982-07-08
JPS6160309U (en) * 1984-09-20 1986-04-23
JPS63107014U (en) * 1986-12-26 1988-07-11

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5672713A (en) * 1979-11-16 1981-06-17 Marcon Electronics Co Ltd Humidity controller
JPS57110612U (en) * 1980-12-24 1982-07-08
JPS6160309U (en) * 1984-09-20 1986-04-23
JPS63107014U (en) * 1986-12-26 1988-07-11

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