JPS557658A - Photo-electric type smoke detector - Google Patents

Photo-electric type smoke detector

Info

Publication number
JPS557658A
JPS557658A JP8077078A JP8077078A JPS557658A JP S557658 A JPS557658 A JP S557658A JP 8077078 A JP8077078 A JP 8077078A JP 8077078 A JP8077078 A JP 8077078A JP S557658 A JPS557658 A JP S557658A
Authority
JP
Japan
Prior art keywords
smoke
smoke detecting
introduction path
box
detecting 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
Application number
JP8077078A
Other languages
Japanese (ja)
Inventor
Shigeto Harano
Tsunehiko Araki
Yoshihiko Okuda
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP8077078A priority Critical patent/JPS557658A/en
Publication of JPS557658A publication Critical patent/JPS557658A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

PURPOSE:To avoid malfunction by flowing smoke to the smoke detecting section by means of convection. CONSTITUTION:The detector consists of the light shield window 15 formed at one side by clipping the smoke detecting chamber 14, which includes the smoke detecting section 2' at the shield case 12 covering the printed circuit board 7 mounting electronic components, and the light trapping fin 16 formed at another side. The smoke detecting window box 13 containing the light emitting element 9 and the photo detection element 11 is provided, and the smoke introducing box 18 is fitted at the lower end of the detector cover 17 covering the side of the smoke detecting chamber box 13 to form the smoke introduction path 5' horizontally and connects the smoke introduction path 5' and the smoke detecting chember 14 vertically via the opening 17a. Thus, fire smoke flowing to the smoke introduction path 5' via the insect prevention net 19 flows to the smoke detecting section 2' without accompanying smoke by cigarettes and floating substances by convection, and it is detected with the light emitting element 9 and the photo detection element 11.
JP8077078A 1978-06-30 1978-06-30 Photo-electric type smoke detector Pending JPS557658A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8077078A JPS557658A (en) 1978-06-30 1978-06-30 Photo-electric type smoke detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8077078A JPS557658A (en) 1978-06-30 1978-06-30 Photo-electric type smoke detector

Publications (1)

Publication Number Publication Date
JPS557658A true JPS557658A (en) 1980-01-19

Family

ID=13727644

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8077078A Pending JPS557658A (en) 1978-06-30 1978-06-30 Photo-electric type smoke detector

Country Status (1)

Country Link
JP (1) JPS557658A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0233754A2 (en) * 1986-02-13 1987-08-26 Nohmi Bosai Ltd. A fire detector
JPH01102746U (en) * 1987-12-25 1989-07-11
WO2008153441A1 (en) * 2007-06-15 2008-12-18 Valery Vasilievich Ovchinnikov Electro-optical smoke fire detector
EP2172916A1 (en) * 2008-10-01 2010-04-07 Nohmi Bosai Ltd. Photoelectric smoke detector
US20120067856A1 (en) * 2006-08-29 2012-03-22 Sony Corporation Laser irradiation apparatus, laser irradiation method, fabrication method for thin film semiconductor device and fabrication method for display apparatus
JP2018010444A (en) * 2016-07-13 2018-01-18 能美防災株式会社 Photoelectric smoke detector
CN108475460A (en) * 2015-10-26 2018-08-31 报知希株式会社 Alarm device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0233754A2 (en) * 1986-02-13 1987-08-26 Nohmi Bosai Ltd. A fire detector
JPH01102746U (en) * 1987-12-25 1989-07-11
US20120067856A1 (en) * 2006-08-29 2012-03-22 Sony Corporation Laser irradiation apparatus, laser irradiation method, fabrication method for thin film semiconductor device and fabrication method for display apparatus
WO2008153441A1 (en) * 2007-06-15 2008-12-18 Valery Vasilievich Ovchinnikov Electro-optical smoke fire detector
EP2172916A1 (en) * 2008-10-01 2010-04-07 Nohmi Bosai Ltd. Photoelectric smoke detector
CN101713733A (en) * 2008-10-01 2010-05-26 能美防灾株式会社 Photoelectric smoke sensor
US8232885B2 (en) 2008-10-01 2012-07-31 Nohmi Bosai Ltd. Photoelectric smoke detector
CN108475460A (en) * 2015-10-26 2018-08-31 报知希株式会社 Alarm device
US10621845B2 (en) 2015-10-26 2020-04-14 Hochiki Corporation Alarm device
CN112185055A (en) * 2015-10-26 2021-01-05 报知希株式会社 Alarm device
JP2018010444A (en) * 2016-07-13 2018-01-18 能美防災株式会社 Photoelectric smoke detector

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