JPH0374098U - - Google Patents
Info
- Publication number
- JPH0374098U JPH0374098U JP13303189U JP13303189U JPH0374098U JP H0374098 U JPH0374098 U JP H0374098U JP 13303189 U JP13303189 U JP 13303189U JP 13303189 U JP13303189 U JP 13303189U JP H0374098 U JPH0374098 U JP H0374098U
- Authority
- JP
- Japan
- Prior art keywords
- light
- smoke
- detection area
- dark box
- smoke detection
- 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
- 239000000779 smoke Substances 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims 5
Description
第１図はこの考案の散乱光式煙感知器の一実施
例を示す縦断面図、第２図は第１図のＤ−Ｄ線断
面図である。
１……器体、２……暗箱、３，５……フレネル
レンズ、４……発光素子、６……受光素子、７…
…プリント基板。
FIG. 1 is a longitudinal sectional view showing an embodiment of the scattered light type smoke detector of this invention, and FIG. 2 is a sectional view taken along the line DD in FIG. 1... Container body, 2... Dark box, 3, 5... Fresnel lens, 4... Light emitting element, 6... Light receiving element, 7...
…Printed board.
Claims (1)
領域に光線を放射する発光素子と、上記暗箱の煙
検出領域に流入した煙による散乱光を検出する受
光素子と、煙の流入方向に対し平行な上記暗箱の
一側面に配置し、上記発光素子の光線が上記煙検
出領域に照射するようにした発光用フレネルレン
ズと、煙の流入方向に対し平行な上記暗箱の一側
面に配置し、上記煙検出領域の煙による散乱光を
上記受光素子に収束するようにした受光用フレネ
ルレンズとを具備したことを特徴とする散乱光式
煙感知器。 a dark box that can communicate with outside air; a light emitting element that emits light to a smoke detection area of the dark box; a light receiving element that detects light scattered by smoke that has flowed into the smoke detection area of the dark box; A light emitting Fresnel lens is placed on one side of the dark box parallel to the smoke detection area so that the light beam of the light emitting element illuminates the smoke detection area, and a light emitting Fresnel lens is placed on one side of the dark box parallel to the smoke inflow direction. A scattered light type smoke sensor comprising: a light-receiving Fresnel lens configured to converge light scattered by smoke in the smoke detection area onto the light-receiving element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989133031U JPH0650075Y2 (en) | 1989-11-17 | 1989-11-17 | Scattered light smoke detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989133031U JPH0650075Y2 (en) | 1989-11-17 | 1989-11-17 | Scattered light smoke detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0374098U true JPH0374098U (en) | 1991-07-25 |
| JPH0650075Y2 JPH0650075Y2 (en) | 1994-12-14 |
Family
ID=31680451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989133031U Expired - Lifetime JPH0650075Y2 (en) | 1989-11-17 | 1989-11-17 | Scattered light smoke detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0650075Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010040006A (en) * | 2008-08-08 | 2010-02-18 | Sharp Corp | Photoelectric smoke sensor and lighting apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58117587U (en) * | 1982-02-04 | 1983-08-11 | 能美防災工業株式会社 | Scattered light smoke detector |
-
1989
- 1989-11-17 JP JP1989133031U patent/JPH0650075Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58117587U (en) * | 1982-02-04 | 1983-08-11 | 能美防災工業株式会社 | Scattered light smoke detector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010040006A (en) * | 2008-08-08 | 2010-02-18 | Sharp Corp | Photoelectric smoke sensor and lighting apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0650075Y2 (en) | 1994-12-14 |