JPS6126920Y2 - - Google Patents
Info
- Publication number
- JPS6126920Y2 JPS6126920Y2 JP15908080U JP15908080U JPS6126920Y2 JP S6126920 Y2 JPS6126920 Y2 JP S6126920Y2 JP 15908080 U JP15908080 U JP 15908080U JP 15908080 U JP15908080 U JP 15908080U JP S6126920 Y2 JPS6126920 Y2 JP S6126920Y2
- Authority
- JP
- Japan
- Prior art keywords
- light
- light emitting
- lens
- protection device
- smoke detector
- 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 11
- 240000002853 Nelumbo nucifera Species 0.000 claims description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 239000011358 absorbing material Substances 0.000 claims 1
- 239000000428 dust Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Optical Measuring Cells (AREA)
- Fire-Detection Mechanisms (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15908080U JPS6126920Y2 (ko) | 1980-11-08 | 1980-11-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15908080U JPS6126920Y2 (ko) | 1980-11-08 | 1980-11-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5781547U JPS5781547U (ko) | 1982-05-20 |
| JPS6126920Y2 true JPS6126920Y2 (ko) | 1986-08-12 |
Family
ID=29518111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15908080U Expired JPS6126920Y2 (ko) | 1980-11-08 | 1980-11-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6126920Y2 (ko) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2540192Y2 (ja) * | 1991-03-12 | 1997-07-02 | ホーチキ株式会社 | 光線式感知器 |
| JP6525236B2 (ja) * | 2014-09-01 | 2019-06-05 | 能美防災株式会社 | 減光式煙検知器 |
-
1980
- 1980-11-08 JP JP15908080U patent/JPS6126920Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5781547U (ko) | 1982-05-20 |
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