JPS5252396A - Transmission type smoke detector - Google Patents
Transmission type smoke detectorInfo
- Publication number
- JPS5252396A JPS5252396A JP12748375A JP12748375A JPS5252396A JP S5252396 A JPS5252396 A JP S5252396A JP 12748375 A JP12748375 A JP 12748375A JP 12748375 A JP12748375 A JP 12748375A JP S5252396 A JPS5252396 A JP S5252396A
- Authority
- JP
- Japan
- Prior art keywords
- transmission type
- smoke detector
- type smoke
- light receiving
- receiving element
- 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
- Fire-Detection Mechanisms (AREA)
Abstract
PURPOSE: The transmission type smoke detector so designed as to prevent the reduced output of a light receiving element owing to deposition of dust and dirt, deterioration of a light emitting element, etc. and detect the reduced output of the light receiving element owing to the entry of smoke.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12748375A JPS5252396A (en) | 1975-10-24 | 1975-10-24 | Transmission type smoke detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12748375A JPS5252396A (en) | 1975-10-24 | 1975-10-24 | Transmission type smoke detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5252396A true JPS5252396A (en) | 1977-04-27 |
Family
ID=14961047
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12748375A Pending JPS5252396A (en) | 1975-10-24 | 1975-10-24 | Transmission type smoke detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5252396A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4838998A (en) * | 1971-09-20 | 1973-06-08 |
-
1975
- 1975-10-24 JP JP12748375A patent/JPS5252396A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4838998A (en) * | 1971-09-20 | 1973-06-08 |
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