JPS55141640A - Earthquake sensing and alarming device - Google Patents
Earthquake sensing and alarming deviceInfo
- Publication number
- JPS55141640A JPS55141640A JP4956379A JP4956379A JPS55141640A JP S55141640 A JPS55141640 A JP S55141640A JP 4956379 A JP4956379 A JP 4956379A JP 4956379 A JP4956379 A JP 4956379A JP S55141640 A JPS55141640 A JP S55141640A
- Authority
- JP
- Japan
- Prior art keywords
- flicker lamp
- earthquake
- bimetal
- filament
- battery
- 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
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Emergency Alarm Devices (AREA)
Abstract
PURPOSE: To achieve the reduction of manufacturing cost by using a flicker lamp having a bimetal switching means.
CONSTITUTION: A flicker lamp 10 having a bimetal switching means 27 is connected to a battery B by way of an earthquake sensing switch 7 and manual switch S. As a result of this, when a metal plate 22 touches a metal barrel 21 owing to vibrations such as an earthquake and the vibration sensing switch 7 goes ON, the circuit of the battery B, flicker lamp 10, manual switch S, etc. is closed to energize a coil 18 which in turn attracts the metal plate 22 to maintain the contact state with the metal barrel 21. At the same time, electric current is supplied to the flicker lamp 10 to let a filament 26 emit red heat light, thereby announcing the earthquake sensing. Thereafter, the bimetal means 27 curves by the effect of heating and detaches from the filament 27 to stop its red heat light emission. Hence, the device may be constituted without using any costly semiconductor element.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4956379A JPS55141640A (en) | 1979-04-21 | 1979-04-21 | Earthquake sensing and alarming device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4956379A JPS55141640A (en) | 1979-04-21 | 1979-04-21 | Earthquake sensing and alarming device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55141640A true JPS55141640A (en) | 1980-11-05 |
Family
ID=12834663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4956379A Pending JPS55141640A (en) | 1979-04-21 | 1979-04-21 | Earthquake sensing and alarming device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55141640A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62123524U (en) * | 1986-01-28 | 1987-08-05 |
-
1979
- 1979-04-21 JP JP4956379A patent/JPS55141640A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62123524U (en) * | 1986-01-28 | 1987-08-05 |
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