JPS643996U - - Google Patents
Info
- Publication number
- JPS643996U JPS643996U JP9846487U JP9846487U JPS643996U JP S643996 U JPS643996 U JP S643996U JP 9846487 U JP9846487 U JP 9846487U JP 9846487 U JP9846487 U JP 9846487U JP S643996 U JPS643996 U JP S643996U
- Authority
- JP
- Japan
- Prior art keywords
- light
- light source
- smoke
- partition plate
- receiving section
- 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.)
- Pending
Links
- 239000000779 smoke Substances 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Fire-Detection Mechanisms (AREA)
Description
第１図は本考案の一実施例を示す断面図、第２
図は仕切板の斜視図、第３図は第２図Ａ矢視図、
第４図ａ，ｂ，ｃは第３図―線、―線お
よび―線断面図である。
１…煙感知器、２…暗箱、３…煙、４…測定室
、５，６，７…通気孔、８…光源、９…直射光、
１０…光トラツプ部、１２，１３…受光部、１５
…仕切板、１６Ａ，１６Ｂ…板体、１７，１８…
切欠部、１９…小孔。
Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a perspective view of the partition plate, Figure 3 is a view from arrow A in Figure 2,
FIGS. 4a, b, and c are cross-sectional views taken along the lines of FIG. 3. 1...Smoke detector, 2...Dark box, 3...Smoke, 4...Measurement room, 5, 6, 7...Vent hole, 8...Light source, 9...Direct light,
10... Optical trap section, 12, 13... Light receiving section, 15
...Partition plate, 16A, 16B...Plate body, 17, 18...
Notch portion, 19...small hole.
Claims (1)
光を照射する光源と、該光源の直射光を受光しな
い位置に配置され煙による散乱光を受光する受光
部と、前記光源と対向する位置に配置され該光源
の直射光を取込む光トラツプ部と、該光トラツプ
部と前記光源との間に適宜間隔をおいて配置され
該光源からの直射光が通過する小孔を有する複数
の仕切板とを備え、各仕切板は、互いに交差する
２つの板体で構成され、これら板体の交差部分に
は前記小孔を形成する切欠部が対向して設けられ
ていることを特徴とする光電式煙感知器。 A dark box having a ventilation hole for introducing smoke, a light source that irradiates light in the dark box, a light receiving section that is disposed at a position that does not receive direct light from the light source and receives light scattered by the smoke, and a light receiving section that faces the light source. a plurality of small holes arranged at appropriate intervals between the light trap and the light source, through which the direct light from the light source passes; and a partition plate, each partition plate being composed of two plates that intersect with each other, and cutouts forming the small holes are provided facing each other at the intersections of these plates. Photoelectric smoke detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9846487U JPS643996U (en) | 1987-06-29 | 1987-06-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9846487U JPS643996U (en) | 1987-06-29 | 1987-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS643996U true JPS643996U (en) | 1989-01-11 |
Family
ID=31324754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9846487U Pending JPS643996U (en) | 1987-06-29 | 1987-06-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643996U (en) |
-
1987
- 1987-06-29 JP JP9846487U patent/JPS643996U/ja active Pending