JPH0650076Y2 - 火災検知器の汚損軽減装置 - Google Patents
火災検知器の汚損軽減装置Info
- Publication number
- JPH0650076Y2 JPH0650076Y2 JP1988065210U JP6521088U JPH0650076Y2 JP H0650076 Y2 JPH0650076 Y2 JP H0650076Y2 JP 1988065210 U JP1988065210 U JP 1988065210U JP 6521088 U JP6521088 U JP 6521088U JP H0650076 Y2 JPH0650076 Y2 JP H0650076Y2
- Authority
- JP
- Japan
- Prior art keywords
- cover
- fire detector
- fire
- detector
- protective window
- 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
- 230000001681 protective effect Effects 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000000428 dust Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Fire Alarms (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Fire-Detection Mechanisms (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988065210U JPH0650076Y2 (ja) | 1988-05-19 | 1988-05-19 | 火災検知器の汚損軽減装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988065210U JPH0650076Y2 (ja) | 1988-05-19 | 1988-05-19 | 火災検知器の汚損軽減装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01172189U JPH01172189U (en]) | 1989-12-06 |
JPH0650076Y2 true JPH0650076Y2 (ja) | 1994-12-14 |
Family
ID=31290651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988065210U Expired - Lifetime JPH0650076Y2 (ja) | 1988-05-19 | 1988-05-19 | 火災検知器の汚損軽減装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0650076Y2 (en]) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3891465B2 (ja) * | 2000-02-29 | 2007-03-14 | 能美防災株式会社 | 炎検知器 |
JP7097417B2 (ja) * | 2020-10-08 | 2022-07-07 | ホーチキ株式会社 | 火災検知器 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5821037Y2 (ja) * | 1978-08-25 | 1983-05-02 | 能美防災工業株式会社 | 輻射式感知器の防塵カバ− |
JPH0441434Y2 (en]) * | 1984-09-12 | 1992-09-29 |
-
1988
- 1988-05-19 JP JP1988065210U patent/JPH0650076Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH01172189U (en]) | 1989-12-06 |
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