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JPS52143795A - Photoelectric type smoke sensor - Google Patents

Photoelectric type smoke sensor

Info

Publication number
JPS52143795A
JPS52143795A JP6087976A JP6087976A JPS52143795A JP S52143795 A JPS52143795 A JP S52143795A JP 6087976 A JP6087976 A JP 6087976A JP 6087976 A JP6087976 A JP 6087976A JP S52143795 A JPS52143795 A JP S52143795A
Authority
JP
Japan
Prior art keywords
smoke sensor
type smoke
photoelectric type
photo detector
light source
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
JP6087976A
Other languages
Japanese (ja)
Inventor
Shigeru Matsumoto
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 JP6087976A priority Critical patent/JPS52143795A/en
Publication of JPS52143795A publication Critical patent/JPS52143795A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fire-Detection Mechanisms (AREA)

Abstract

PURPOSE: To prevent the direct light from a light source from falling onto a photo detector and obtain stable operation of less noise conponents even at the time of non-fire by providing a light shielding plate and a screen plate between the light source and the photo detector in a smoke chamber.
COPYRIGHT: (C)1977,JPO&Japio
JP6087976A 1976-05-25 1976-05-25 Photoelectric type smoke sensor Pending JPS52143795A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6087976A JPS52143795A (en) 1976-05-25 1976-05-25 Photoelectric type smoke sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6087976A JPS52143795A (en) 1976-05-25 1976-05-25 Photoelectric type smoke sensor

Publications (1)

Publication Number Publication Date
JPS52143795A true JPS52143795A (en) 1977-11-30

Family

ID=13155092

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6087976A Pending JPS52143795A (en) 1976-05-25 1976-05-25 Photoelectric type smoke sensor

Country Status (1)

Country Link
JP (1) JPS52143795A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5011398B1 (en) * 1970-12-14 1975-04-30

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5011398B1 (en) * 1970-12-14 1975-04-30

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