JPH0341394U - - Google Patents
Info
- Publication number
- JPH0341394U JPH0341394U JP10133189U JP10133189U JPH0341394U JP H0341394 U JPH0341394 U JP H0341394U JP 10133189 U JP10133189 U JP 10133189U JP 10133189 U JP10133189 U JP 10133189U JP H0341394 U JPH0341394 U JP H0341394U
- Authority
- JP
- Japan
- Prior art keywords
- holder
- light
- light emitting
- light receiving
- 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.)
- Pending
Links
- 239000000779 smoke Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 2
- 230000001154 acute effect Effects 0.000 claims 2
- 230000003287 optical effect Effects 0.000 claims 1
Landscapes
- Fire-Detection Mechanisms (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
第１図はこの考案の実施例を示す断面図で第２
図の−線断面図、第２図は縦断面図、第３図
は従来例を示す断面図、である。
７……発光部ホルダ、８……受光部ホルダ、９
……発光窓、９ａ……枠内壁面、１０……受光窓
、１０ａ……枠内壁面、１３……遮光壁、２０…
…検煙部、２１……受光窓。
Figure 1 is a sectional view showing an embodiment of this invention.
2 is a longitudinal sectional view, and FIG. 3 is a sectional view showing a conventional example. 7... Light emitting unit holder, 8... Light receiving unit holder, 9
...Light emitting window, 9a...Wall surface within the frame, 10...Light receiving window, 10a...Wall surface within the frame, 13...Shading wall, 20...
...Smoke detection section, 21...Light receiving window.
Claims (1)
光窓の枠内壁面を夫々鋭角に傾斜せしめ、前記両
ホルダ間に設けた遮光壁の光軸側端面を鋭角に傾
斜せしめると共に、検煙部の内面を艶消し黒色に
形成したことを特徴とする散乱光式煙感知器。 (2) 受光部ホルダの受光窓の枠内壁面が、ホル
ダの内側に向かつて放射状に形成されていること
を特徴とする請求項第１記載の散乱光式煙感知器
。 (3) 発光部ホルダの発光窓の枠内壁面が、ホル
ダの外側に向かつて放射状に形成されていること
を特徴とする請求項第１記載の散乱光式煙感知器
。[Claims for Utility Model Registration] (1) The inner frame wall surfaces of the light emitting window of the light emitting unit holder and the light receiving window of the light receiving unit holder are each inclined at an acute angle, and the end face on the optical axis side of the light shielding wall provided between the two holders is A scattered light type smoke detector characterized by being inclined at an acute angle and having a matte black inner surface of the smoke detection part. (2) The scattered light type smoke detector according to claim 1, wherein the inner wall surface of the frame of the light receiving window of the light receiving portion holder is formed in a radial shape toward the inside of the holder. (3) The scattered light type smoke detector according to claim 1, wherein the inner wall surface of the frame of the light emitting window of the light emitting unit holder is formed in a radial shape toward the outside of the holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10133189U JPH0341394U (en) | 1989-08-30 | 1989-08-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10133189U JPH0341394U (en) | 1989-08-30 | 1989-08-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0341394U true JPH0341394U (en) | 1991-04-19 |
Family
ID=31650290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10133189U Pending JPH0341394U (en) | 1989-08-30 | 1989-08-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0341394U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6237751B2 (en) * | 1981-07-27 | 1987-08-13 | Voest Alpine Ag | |
| JPS63167246A (en) * | 1986-12-27 | 1988-07-11 | Hochiki Corp | Scattered light type smoke sensor |
-
1989
- 1989-08-30 JP JP10133189U patent/JPH0341394U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6237751B2 (en) * | 1981-07-27 | 1987-08-13 | Voest Alpine Ag | |
| JPS63167246A (en) * | 1986-12-27 | 1988-07-11 | Hochiki Corp | Scattered light type smoke sensor |