JPS5460897A - Fire sensor device - Google Patents
Fire sensor deviceInfo
- Publication number
- JPS5460897A JPS5460897A JP12788377A JP12788377A JPS5460897A JP S5460897 A JPS5460897 A JP S5460897A JP 12788377 A JP12788377 A JP 12788377A JP 12788377 A JP12788377 A JP 12788377A JP S5460897 A JPS5460897 A JP S5460897A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- thyristor
- smoke
- relation
- fire
- 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.)
- Granted
Links
Landscapes
- Fire-Detection Mechanisms (AREA)
Abstract
PURPOSE: To ensure detection of the fire outbreak via the heat and smoke in relation to each other and with use of the heat-sensitive thyristor and the photo detector.
CONSTITUTION: When the peripheral temperature rises up to the set level, heat- sensitive thyristor 11 conducts and actuates alarm device 13. Photo transistor PhTr14 is connected between the gate of thyristor 11 and one main electrode adjacent to the thyristor gate and usually conducts with reception of the optical output given from light emission source 5. The optical output, however, is reduced due to the intrusion of the smoke when the fire breaks out. As a result, the conduction of PhTr11 is reduced, and the switch temperature is lowered. In this way, the fire outbreak can be detected by both the heat and smoke in relation to each other
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12788377A JPS589480B2 (en) | 1977-10-24 | 1977-10-24 | fire detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12788377A JPS589480B2 (en) | 1977-10-24 | 1977-10-24 | fire detection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5460897A true JPS5460897A (en) | 1979-05-16 |
JPS589480B2 JPS589480B2 (en) | 1983-02-21 |
Family
ID=14970997
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12788377A Expired JPS589480B2 (en) | 1977-10-24 | 1977-10-24 | fire detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS589480B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0530390U (en) * | 1991-09-21 | 1993-04-20 | 明 山吹 | Storage with input port |
-
1977
- 1977-10-24 JP JP12788377A patent/JPS589480B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS589480B2 (en) | 1983-02-21 |
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