JPH02126295U - - Google Patents
Info
- Publication number
- JPH02126295U JPH02126295U JP3510789U JP3510789U JPH02126295U JP H02126295 U JPH02126295 U JP H02126295U JP 3510789 U JP3510789 U JP 3510789U JP 3510789 U JP3510789 U JP 3510789U JP H02126295 U JPH02126295 U JP H02126295U
- Authority
- JP
- Japan
- Prior art keywords
- smoke
- light receiving
- light
- case
- light emitting
- 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 7
- 238000001514 detection method Methods 0.000 claims description 6
Landscapes
- Fire-Detection Mechanisms (AREA)
Description
第１図は本考案一実施例の要部斜視図、第２図
は同上の要部断面図、第３図は同上の要部断面図
、第４図は同上の要部断面図、第５図は従来例の
側面図、第６図は同上の断面図、第７図は同上の
要部斜視図である。
１……ラビリンス、１ａ……検知エリア、２…
…投光素子、３……受光素子、４……煙検出回路
、５……プリント基板、６ａ，６ｂ……投、受光
孔、７……ケース、８……ハウジング、１１……
透明板である。
Fig. 1 is a perspective view of the main part of an embodiment of the present invention, Fig. 2 is a sectional view of the main part of the same, Fig. 3 is a sectional view of the main part of the same, Fig. 4 is a sectional view of the main part of the same, and Fig. 5 is a sectional view of the main part of the same. The figure is a side view of the conventional example, FIG. 6 is a sectional view of the same, and FIG. 7 is a perspective view of the main part of the same. 1... Labyrinth, 1a... Detection area, 2...
...Light emitting element, 3... Light receiving element, 4... Smoke detection circuit, 5... Printed circuit board, 6a, 6b... Emitting, light receiving hole, 7... Case, 8... Housing, 11...
It is a transparent plate.
Claims (1)
に投光する投光素子と、検知エリアからの反射光
を受光する受光素子と、受光素子出力に基づいて
煙の有無を検出する煙検出回路とで構成され、投
光素子、受光素子および煙検出回路を投、受光孔
が穿設されたシールド機能付ケースに収納し、上
記ケースをラビリンスを具備したハウジングに収
納した煙感知器において、ケースの投、受光孔に
透明板を覆着してケースを密封状態にしたことを
特徴とする煙感知器。 A light emitting element that emits light into a detection area where smoke is introduced via a labyrinth, a light receiving element that receives reflected light from the detection area, and a smoke detection circuit that detects the presence or absence of smoke based on the output of the light receiving element. In a smoke detector in which a light emitting element, a light receiving element, and a smoke detection circuit are housed in a case with a shield function that has a light emitting and light receiving hole, and the case is housed in a housing equipped with a labyrinth, , a smoke detector characterized in that the case is sealed by covering the light receiving hole with a transparent plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3510789U JPH02126295U (en) | 1989-03-28 | 1989-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3510789U JPH02126295U (en) | 1989-03-28 | 1989-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02126295U true JPH02126295U (en) | 1990-10-17 |
Family
ID=31540179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3510789U Pending JPH02126295U (en) | 1989-03-28 | 1989-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02126295U (en) |
-
1989
- 1989-03-28 JP JP3510789U patent/JPH02126295U/ja active Pending
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