JPH0496U - - Google Patents
Info
- Publication number
- JPH0496U JPH0496U JP3946390U JP3946390U JPH0496U JP H0496 U JPH0496 U JP H0496U JP 3946390 U JP3946390 U JP 3946390U JP 3946390 U JP3946390 U JP 3946390U JP H0496 U JPH0496 U JP H0496U
- Authority
- JP
- Japan
- Prior art keywords
- infrared
- infrared sensor
- fire
- bandpass filter
- light source
- 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
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
Landscapes
- Burglar Alarm Systems (AREA)
- Fire-Detection Mechanisms (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3946390U JP2531468Y2 (ja) | 1990-04-16 | 1990-04-16 | 火災検出システム |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3946390U JP2531468Y2 (ja) | 1990-04-16 | 1990-04-16 | 火災検出システム |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0496U true JPH0496U (en:Method) | 1992-01-06 |
| JP2531468Y2 JP2531468Y2 (ja) | 1997-04-02 |
Family
ID=31548394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3946390U Expired - Lifetime JP2531468Y2 (ja) | 1990-04-16 | 1990-04-16 | 火災検出システム |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2531468Y2 (en:Method) |
-
1990
- 1990-04-16 JP JP3946390U patent/JP2531468Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2531468Y2 (ja) | 1997-04-02 |
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