JPH03127990U - - Google Patents

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Publication number
JPH03127990U
JPH03127990U JP3651690U JP3651690U JPH03127990U JP H03127990 U JPH03127990 U JP H03127990U JP 3651690 U JP3651690 U JP 3651690U JP 3651690 U JP3651690 U JP 3651690U JP H03127990 U JPH03127990 U JP H03127990U
Authority
JP
Japan
Prior art keywords
light
receiving element
smoke
receiving
detection area
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.)
Granted
Application number
JP3651690U
Other languages
Japanese (ja)
Other versions
JP2545772Y2 (en
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 filed Critical
Priority to JP1990036516U priority Critical patent/JP2545772Y2/en
Publication of JPH03127990U publication Critical patent/JPH03127990U/ja
Application granted granted Critical
Publication of JP2545772Y2 publication Critical patent/JP2545772Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案請求項１に対応する第一実施例
の煙検出器を示す断面図、第２図は本考案請求項
２に対応する第二実施例の煙検出器における受光
素子の断面図、第３図は本考案請求項２に対応す
る第三実施例を示す煙検出器の受光素子の断面図
、第４図は従来の煙検出器の断面図、第５図は従
来における他の提案例を示す一部拡大断面図であ
る。 １５……煙、１６……発光部、１７……受光部
、１７ａ……採光窓、２１……受光素子、２２…
…受光側固定ケース、２４……可視光遮断体、Ｓ
０……外乱光、Ｓ１……信号光、Ｓ２……ノイズ
光。 FIG. 1 is a cross-sectional view showing a smoke detector of a first embodiment corresponding to claim 1 of the present invention, and FIG. 2 is a cross-sectional view of a light receiving element in a smoke detector of a second embodiment corresponding to claim 2 of the present invention. 3 is a sectional view of a light receiving element of a smoke detector showing a third embodiment corresponding to claim 2 of the present invention, FIG. 4 is a sectional view of a conventional smoke detector, and FIG. 5 is a sectional view of a conventional smoke detector. FIG. 2 is a partially enlarged sectional view showing a proposed example. 15... Smoke, 16... Light emitting part, 17... Light receiving part, 17a... Lighting window, 21... Light receiving element, 22...
...Light receiving side fixed case, 24...Visible light blocker, S
0...Disturbance light, S1...Signal light, S2...Noise light.

Claims (1)

【実用新案登録請求の範囲】 １ 被検知領域内の煙に照射光を発するための発
光部と、被検知領域の煙により反射した信号光を
受光するための受光部とから構成され、該受光部
は、受光素子と、該受光素子を収納し煙からの反
射信号光を受光素子に採光するための採光窓が形
成された固定ケースと、前記採光窓と受光素子と
の間に介在され外乱光である可視光を遮断するた
めの可視光遮断体とを備えた煙検出器において、
前記可視光遮断体は、その有効面積が受光素子と
ほぼ同一になるよう形成され、かつ煙からの信号
光以外の光の入射を規制するよう前記採光窓から
奥まつて受光素子に密着して配されたことを特徴
とする煙検出器。 ２ 被検知領域内の煙に照射光を発するための発
光部と、被検知領域の煙により反射した信号光を
受光するための受光部とから構成され、該受光部
は、受光素子と、該受光素子を収納し煙からの反
射信号光を受光素子に採光するための採光窓が形
成された固定ケースとを備えた煙検出器において
、前記受光素子の内部に、外乱光である可視光を
遮断する可視光遮断体が配設されたことを特徴と
する煙検出器。[Scope of Claim for Utility Model Registration] 1. Consisting of a light emitting part for emitting light to illuminate smoke in the detection area, and a light receiving part for receiving signal light reflected by the smoke in the detection area, The part includes a light-receiving element, a fixed case in which the light-receiving element is housed, and a lighting window is formed for guiding signal light reflected from smoke to the light-receiving element, and the part is interposed between the light-receiving window and the light-receiving element to prevent disturbances. A smoke detector equipped with a visible light blocker for blocking visible light, which is light,
The visible light blocking body is formed so that its effective area is almost the same as that of the light receiving element, and is set back from the lighting window and in close contact with the light receiving element so as to restrict the incidence of light other than the signal light from the smoke. A smoke detector characterized by: 2 Consists of a light emitting section for emitting light to illuminate smoke in the detection area, and a light receiving section for receiving signal light reflected by the smoke in the detection area, and the light receiving section includes a light receiving element and a A smoke detector that includes a fixed case that houses a light receiving element and has a lighting window formed therein for transmitting signal light reflected from smoke to the light receiving element, in which visible light, which is disturbance light, is introduced into the inside of the light receiving element. A smoke detector characterized by being provided with a visible light blocker that blocks visible light.
JP1990036516U 1990-04-03 1990-04-03 Smoke detector Expired - Fee Related JP2545772Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990036516U JP2545772Y2 (en) 1990-04-03 1990-04-03 Smoke detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990036516U JP2545772Y2 (en) 1990-04-03 1990-04-03 Smoke detector

Publications (2)

Publication Number Publication Date
JPH03127990U true JPH03127990U (en) 1991-12-24
JP2545772Y2 JP2545772Y2 (en) 1997-08-27

Family

ID=31542816

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990036516U Expired - Fee Related JP2545772Y2 (en) 1990-04-03 1990-04-03 Smoke detector

Country Status (1)

Country Link
JP (1) JP2545772Y2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014513584A (en) * 2011-02-25 2014-06-05 フレセニウス メディカル ケア ホールディングス インコーポレーテッド Shroud-covered sensor clip assembly and blood chamber for optical blood monitoring systems
WO2015151502A1 (en) * 2014-04-03 2015-10-08 パナソニックＩｐマネジメント株式会社 Particle-detecting sensor, dust sensor, smoke detector, air purifier, fan, and air conditioner
JP2015200547A (en) * 2014-04-07 2015-11-12 パナソニックＩｐマネジメント株式会社 Particle detection sensor, dust sensor, smoke detector, air cleaner and ventilator
US9285305B2 (en) 2010-09-07 2016-03-15 Fresenius Medical Care Holdings, Inc. Shrouded sensor clip assembly and blood chamber for an optical blood monitoring system
JP2016200980A (en) * 2015-04-10 2016-12-01 ホーチキ株式会社 Smoke detector
CN115083097A (en) * 2022-06-09 2022-09-20 南京英锐创电子科技有限公司 Analog front-end circuit and smoke alarm

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS562092A (en) * 1979-06-19 1981-01-10 Nippon Keibi Hosho Kk Smoke sensor
JPS6373045A (en) * 1986-09-12 1988-04-02 Matsushita Electric Ind Co Ltd Bathtub water purifier

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS562092A (en) * 1979-06-19 1981-01-10 Nippon Keibi Hosho Kk Smoke sensor
JPS6373045A (en) * 1986-09-12 1988-04-02 Matsushita Electric Ind Co Ltd Bathtub water purifier

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9285305B2 (en) 2010-09-07 2016-03-15 Fresenius Medical Care Holdings, Inc. Shrouded sensor clip assembly and blood chamber for an optical blood monitoring system
JP2014513584A (en) * 2011-02-25 2014-06-05 フレセニウス メディカル ケア ホールディングス インコーポレーテッド Shroud-covered sensor clip assembly and blood chamber for optical blood monitoring systems
WO2015151502A1 (en) * 2014-04-03 2015-10-08 パナソニックＩｐマネジメント株式会社 Particle-detecting sensor, dust sensor, smoke detector, air purifier, fan, and air conditioner
JP2015200547A (en) * 2014-04-07 2015-11-12 パナソニックＩｐマネジメント株式会社 Particle detection sensor, dust sensor, smoke detector, air cleaner and ventilator
JP2016200980A (en) * 2015-04-10 2016-12-01 ホーチキ株式会社 Smoke detector
CN115083097A (en) * 2022-06-09 2022-09-20 南京英锐创电子科技有限公司 Analog front-end circuit and smoke alarm

Also Published As

Publication number Publication date
JP2545772Y2 (en) 1997-08-27

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