JPS6421320A - Gradation display device - Google Patents

Gradation display device

Info

Publication number
JPS6421320A
JPS6421320A JP62178463A JP17846387A JPS6421320A JP S6421320 A JPS6421320 A JP S6421320A JP 62178463 A JP62178463 A JP 62178463A JP 17846387 A JP17846387 A JP 17846387A JP S6421320 A JPS6421320 A JP S6421320A
Authority
JP
Japan
Prior art keywords
alone
freezing
atmospheric temperature
display lamp
gradation display
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
JP62178463A
Other languages
Japanese (ja)
Inventor
Mitsuo Nishi
Kenji Tamaki
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP62178463A priority Critical patent/JPS6421320A/en
Publication of JPS6421320A publication Critical patent/JPS6421320A/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/40—Arrangements responsive to adverse atmospheric conditions, e.g. to signal icy roads or to automatically illuminate in fog; Arrangements characterised by heating or drying means

Abstract

PURPOSE:To simplify the construction of a gradation display device, by performing a level discrimination of an output corresponding to variations in measuring condition to make a gradation display based on an output of the level discrimination. CONSTITUTION:When the atmospheric temperature measured is below 1 deg.C, mercury 15 of a road thermometer 3 is positioned at least below a contact member 16b. The contact members 17b and 6b both fail to be energized by power to keep relay coils 21 and 22 from excitation, making switches 24 and 25 both cut off and a display lamp 10R comes ON to indicate a danger of freezing. When the atmospheric temperature ranges from 1 deg.C-2 deg.C, the relay coil 21 alone is excited and a display lamp 10Y alone come ON to arouse a caution against freezing of a road surface. When the atmospheric temperature is above 2 deg.C, the relay coils 21 and 22 are both excited and a display lamp 10G alone comes ON to indicate no more of danger of freezing the road surface.
JP62178463A 1987-07-16 1987-07-16 Gradation display device Pending JPS6421320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62178463A JPS6421320A (en) 1987-07-16 1987-07-16 Gradation display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62178463A JPS6421320A (en) 1987-07-16 1987-07-16 Gradation display device

Publications (1)

Publication Number Publication Date
JPS6421320A true JPS6421320A (en) 1989-01-24

Family

ID=16048956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62178463A Pending JPS6421320A (en) 1987-07-16 1987-07-16 Gradation display device

Country Status (1)

Country Link
JP (1) JPS6421320A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8177435B2 (en) 2006-06-08 2012-05-15 Nsk Ltd. Manufacturing method of a drawn cup needle roller bearing having seal ring

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8177435B2 (en) 2006-06-08 2012-05-15 Nsk Ltd. Manufacturing method of a drawn cup needle roller bearing having seal ring

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