JP2536630Y2 - 光電式煙感知器 - Google Patents
光電式煙感知器Info
- Publication number
- JP2536630Y2 JP2536630Y2 JP1989017887U JP1788789U JP2536630Y2 JP 2536630 Y2 JP2536630 Y2 JP 2536630Y2 JP 1989017887 U JP1989017887 U JP 1989017887U JP 1788789 U JP1788789 U JP 1788789U JP 2536630 Y2 JP2536630 Y2 JP 2536630Y2
- Authority
- JP
- Japan
- Prior art keywords
- dark box
- circuit board
- light receiving
- light emitting
- light
- 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 - Lifetime
Links
- 239000000779 smoke Substances 0.000 title claims description 20
- 230000002093 peripheral effect Effects 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 10
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000002184 metal Substances 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 13
- 239000007787 solid Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000077 insect repellent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Fire-Detection Mechanisms (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989017887U JP2536630Y2 (ja) | 1989-02-20 | 1989-02-20 | 光電式煙感知器 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989017887U JP2536630Y2 (ja) | 1989-02-20 | 1989-02-20 | 光電式煙感知器 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02111896U JPH02111896U (enrdf_load_stackoverflow) | 1990-09-06 |
| JP2536630Y2 true JP2536630Y2 (ja) | 1997-05-21 |
Family
ID=31232058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989017887U Expired - Lifetime JP2536630Y2 (ja) | 1989-02-20 | 1989-02-20 | 光電式煙感知器 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2536630Y2 (enrdf_load_stackoverflow) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3824422A (en) * | 1972-06-27 | 1974-07-16 | Anglo Amer Corp South Africa | Smoke detectors |
| JPS5929275Y2 (ja) * | 1980-08-08 | 1984-08-22 | ニッタン株式会社 | 複合型煙感知器 |
-
1989
- 1989-02-20 JP JP1989017887U patent/JP2536630Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02111896U (enrdf_load_stackoverflow) | 1990-09-06 |
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