JPH0330954Y2 - - Google Patents
Info
- Publication number
- JPH0330954Y2 JPH0330954Y2 JP1982014406U JP1440682U JPH0330954Y2 JP H0330954 Y2 JPH0330954 Y2 JP H0330954Y2 JP 1982014406 U JP1982014406 U JP 1982014406U JP 1440682 U JP1440682 U JP 1440682U JP H0330954 Y2 JPH0330954 Y2 JP H0330954Y2
- Authority
- JP
- Japan
- Prior art keywords
- light
- scattered light
- smoke
- lens
- monitoring space
- 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.)
- Expired
Links
- 239000000779 smoke Substances 0.000 claims description 51
- 230000005855 radiation Effects 0.000 claims description 38
- 238000012544 monitoring process Methods 0.000 claims description 24
- 230000003287 optical effect Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Fire-Detection Mechanisms (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1440682U JPS58117587U (ja) | 1982-02-04 | 1982-02-04 | 散乱光式煙感知器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1440682U JPS58117587U (ja) | 1982-02-04 | 1982-02-04 | 散乱光式煙感知器 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58117587U JPS58117587U (ja) | 1983-08-11 |
JPH0330954Y2 true JPH0330954Y2 (fi) | 1991-06-28 |
Family
ID=30026878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1440682U Granted JPS58117587U (ja) | 1982-02-04 | 1982-02-04 | 散乱光式煙感知器 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58117587U (fi) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0650075Y2 (ja) * | 1989-11-17 | 1994-12-14 | ニッタン株式会社 | 散乱光式煙感知器 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5364083A (en) * | 1976-11-19 | 1978-06-08 | Matsushita Electric Works Ltd | Photoelectric smoke detector |
JPS5625111U (fi) * | 1979-08-01 | 1981-03-07 |
-
1982
- 1982-02-04 JP JP1440682U patent/JPS58117587U/ja active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5364083A (en) * | 1976-11-19 | 1978-06-08 | Matsushita Electric Works Ltd | Photoelectric smoke detector |
JPS5625111U (fi) * | 1979-08-01 | 1981-03-07 |
Also Published As
Publication number | Publication date |
---|---|
JPS58117587U (ja) | 1983-08-11 |
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