JPS6114460B2 - - Google Patents

Info

Publication number
JPS6114460B2
JPS6114460B2 JP7404978A JP7404978A JPS6114460B2 JP S6114460 B2 JPS6114460 B2 JP S6114460B2 JP 7404978 A JP7404978 A JP 7404978A JP 7404978 A JP7404978 A JP 7404978A JP S6114460 B2 JPS6114460 B2 JP S6114460B2
Authority
JP
Japan
Prior art keywords
wall
smoke
light
darkroom
opening
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
Application number
JP7404978A
Other languages
English (en)
Japanese (ja)
Other versions
JPS552901A (en
Inventor
Furanshisu Suchiiru Donarudo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
American District Telegraph Co
Original Assignee
American District Telegraph Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by American District Telegraph Co filed Critical American District Telegraph Co
Priority to JP7404978A priority Critical patent/JPS552901A/ja
Publication of JPS552901A publication Critical patent/JPS552901A/ja
Publication of JPS6114460B2 publication Critical patent/JPS6114460B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)
JP7404978A 1978-06-19 1978-06-19 Optical smoke detector Granted JPS552901A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7404978A JPS552901A (en) 1978-06-19 1978-06-19 Optical smoke detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7404978A JPS552901A (en) 1978-06-19 1978-06-19 Optical smoke detector

Publications (2)

Publication Number Publication Date
JPS552901A JPS552901A (en) 1980-01-10
JPS6114460B2 true JPS6114460B2 (enrdf_load_stackoverflow) 1986-04-18

Family

ID=13535927

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7404978A Granted JPS552901A (en) 1978-06-19 1978-06-19 Optical smoke detector

Country Status (1)

Country Link
JP (1) JPS552901A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61256622A (ja) * 1985-05-08 1986-11-14 Mitsubishi Electric Corp 薄膜形成装置

Also Published As

Publication number Publication date
JPS552901A (en) 1980-01-10

Similar Documents

Publication Publication Date Title
US5719557A (en) Photoelectric smoke detector
US6756905B2 (en) Photoelectric smoke detector and chamber therefor
US4906978A (en) Optical smoke detector
US5400014A (en) Smoke detector with dark chamber
US4168438A (en) Light scattering type smoke detector
EP1253566B1 (en) Fire detector unit
RU2541178C2 (ru) Светоизлучающий участок, фотоэлектрический датчик дыма и система всасывающего типа для определения присутствия дыма
CA1103779A (en) Optical smoke detector
US20090009345A1 (en) System and method for an optical particle detector
US4124298A (en) Optical smoke detector inlet screen
US4269510A (en) Smoke detector
CN210865019U (zh) 一种带有导光散射结构的烟感探测装置
KR101675305B1 (ko) 화재감지기 및 그 조립방법
CN119832675A (zh) 双波长烟温复合火灾探测器及探测方法
JP3979032B2 (ja) 火災感知器
CA1050631A (en) Photocell smoke detector
JPS6114460B2 (enrdf_load_stackoverflow)
CN111080960A (zh) 一种带有导光散射结构的烟感探测装置
CN212228736U (zh) 一种用于光电感烟火灾探测器的光学暗室组件
WO2022016716A1 (zh) 一种多光源光学暗室
CA2123155C (en) Photoelectric smoke detector
JP3541959B2 (ja) 散乱光式煙感知器
JPH10241073A (ja) 光電式煙感知器
JPH04250345A (ja) 煙感知器
JPH04250344A (ja) 煙感知器