JP6396750B2 - Fire detector or fire alarm - Google Patents

Fire detector or fire alarm Download PDF

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JP6396750B2
JP6396750B2 JP2014206069A JP2014206069A JP6396750B2 JP 6396750 B2 JP6396750 B2 JP 6396750B2 JP 2014206069 A JP2014206069 A JP 2014206069A JP 2014206069 A JP2014206069 A JP 2014206069A JP 6396750 B2 JP6396750 B2 JP 6396750B2
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加藤 健一
健一 加藤
英聖 森田
英聖 森田
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Nohmi Bosai Ltd
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本発明は、火災発生時に間欠的なフラッシュ発光によって警報を発する、自動火災報知設備の火災感知器や住宅用の火災警報器に関する。   The present invention relates to a fire detector for an automatic fire alarm system and a fire alarm for a house that issues an alarm by intermittent flash emission when a fire occurs.

従来、自動火災報知設備は、所定の音量を発する音響装置を所定の間隔で配設して火災発生を警報し、火災発生を知らせると共に避難を促すものであった。また、住宅用の火災警報器も所定の音量を発して火災発生を警報し、火災発生を知らせると共に避難を促すものであった。   Conventionally, the automatic fire alarm facility has been provided with an acoustic device that emits a predetermined volume at predetermined intervals to warn of the occurrence of a fire, notifying the occurrence of a fire and prompting evacuation. In addition, residential fire alarms also emit a predetermined volume to warn of the occurrence of a fire, notifying the occurrence of a fire and prompting evacuation.

しかしながら、非常事態発生時に避難するべき人に聴覚障害があるような場合、光等の聴覚以外の感覚に働きかけて非常事態を知らせる警報装置の普及が望まれている。そして、強烈な閃光を発するストロボ(登録商標)に代表されるエレクトロニック・フラッシュや、大光量のLEDランプ、等を光源に用い、間欠的にフラッシュ発光する警報装置が知られている(特許文献1〜3参照)。   However, when a person who should evacuate in the event of an emergency situation has a hearing impairment, the spread of an alarm device that works on senses other than hearing such as light to notify the emergency situation is desired. An alarm device that emits light intermittently using an electronic flash represented by a strobe (registered trademark) that emits intense flash light, a large-intensity LED lamp, or the like as a light source is known (Patent Document 1). To 3).

特開平8−161679号公報JP-A-8-161679 特開2011−198194号公報JP 2011-198194 A 特開2014−63207号公報JP 2014-63207 A

従来のフラッシュ発光する警報装置は、平常時は消灯し、火災時に間欠的にフラッシュ発光する光警報装置である。そのような光警報装置は、火災による煙中を通して視認できるだけの強い光を発生する必要がある(参考文献:1970年消防研究所報告「煙中の視程について(I)」、1971年日本火災学会論文集「煙中の見通し距離について」、等、神忠久の一連の研究論文)。そのため、発光素子には、強烈な閃光を発するストロボ(登録商標)に代表されるエレクトロニック・フラッシュや、大光量のLEDランプ等を用いる。要求される光量の強さは設置場所の広さにより異なり、広い設置場所では、より強い光量で発光素子をフラッシュ発光させる必要がある。しかし、このような強い光は、光学的検出手段を備えた火災感知器を、例えば、光電式の煙感知器を誤作動させる虞がある。   Conventional alarm devices that emit flash light are light alarm devices that are normally turned off and intermittently emit flash light in the event of a fire. Such a light alarm device needs to generate strong light that can be visually recognized through smoke in a fire (Reference: Report of the Fire Research Institute in 1970, “Visibility in Smoke (I)”, 1971 Japan Fire Society A series of research papers written by Tadahisa Kamita, such as “The Prospect Distance in Smoke”. For this reason, an electronic flash typified by a strobe (registered trademark) that emits intense flash light, a large-intensity LED lamp, or the like is used as the light emitting element. The intensity of the required amount of light varies depending on the size of the installation location. In a wide installation location, it is necessary to flash the light emitting element with a greater amount of light. However, such strong light may cause a fire detector equipped with an optical detection means to malfunction, for example, a photoelectric smoke detector.

図8は、特許文献3の光警報装置を有した警報システムのように、自動火災報知設備の火災感知器と光警報装置を別に設けた、従来の火災警報システムの例である。この例では、火災感知器として光電式スポット型感知器を用いている。光電式スポット型感知器103(以下、煙感知器103と称する)が火災(煙)を感知すると火災感知信号が受信機102に送られ、受信機102で火災と判断をすると火災警報信号を送出し、光警報装置101のブザー101bにより警報音を鳴動させると共に、発光手段101aにより間欠的にフラッシュ発光させる。この火災警報システムでは、発光手段101aの近くに煙感知器103があると、フラッシュ発光の強い光にさらされることになる。煙感知器103は、内部の暗室に検出発光素子と検出受光素子を、光軸をずらして配置しており、暗室に煙が入った際に検出発光素子からの光が煙で散乱し、その散乱した光を検出受光素子で検出することにより煙の存在を検出する。すなわち、光学的に火災に起因する現象を検出する検出手段を有し、その検出結果に基づいて火災を感知している。この煙感知器103は、ラビリンス構造により外部から煙が暗室に入るようにしながら暗室に外部の光が入らないようにしているが、光警報装置のフラッシュ発光のような強い光は減衰しながらもラビリンスを抜けて暗室内に入射し、検出受光素子で検出されて誤作動する虞がある。   FIG. 8 is an example of a conventional fire alarm system in which a fire detector of an automatic fire alarm facility and an optical alarm device are separately provided as in an alarm system having an optical alarm device of Patent Document 3. In this example, a photoelectric spot type detector is used as a fire detector. When the photoelectric spot type detector 103 (hereinafter referred to as smoke detector 103) detects a fire (smoke), a fire detection signal is sent to the receiver 102, and when the receiver 102 determines a fire, a fire alarm signal is sent out. Then, the buzzer 101b of the light alarm device 101 sounds an alarm sound and the light emitting means 101a intermittently flashes light. In this fire alarm system, if there is a smoke detector 103 near the light emitting means 101a, it is exposed to light with strong flash emission. The smoke detector 103 has a detection light emitting element and a detection light receiving element arranged in an internal dark room with the optical axis shifted, and when smoke enters the dark room, the light from the detection light emitting element is scattered by the smoke. The presence of smoke is detected by detecting the scattered light with a detection light receiving element. That is, it has a detecting means for optically detecting a phenomenon caused by a fire, and senses the fire based on the detection result. The smoke detector 103 has a labyrinth structure that allows smoke to enter the dark room from outside, but prevents light from entering the dark room, but attenuates strong light such as flash light emitted from the light alarm device. There is a risk that it will enter the dark room through the labyrinth and be detected by the detection light-receiving element and malfunction.

このように外部からの強い光の影響を受ける虞がある火災感知器は、光電式スポット型感知器に限らない。火災に起因する現象(煙、熱、放射、ガス、等)を光学的に検出する検出手段の検出結果に基づいて火災を感知する火災感知部で、外部からの強い光の影響を受ける虞がある火災感知器であれば、本発明の適用対象となる。例えば、光電式分離型感知器や、炎からの放射(例えば、紫外線や赤外線)を検出する炎感知器も本発明の適用対象となる。   Thus, the fire detector that may be affected by strong light from the outside is not limited to the photoelectric spot type detector. Fire detection unit that detects a fire based on the detection result of a detection means that optically detects a phenomenon (smoke, heat, radiation, gas, etc.) caused by a fire, and may be affected by strong external light If it is a certain fire detector, it becomes an application object of this invention. For example, photoelectric separation type detectors and flame detectors that detect radiation from flames (for example, ultraviolet rays and infrared rays) are also applicable to the present invention.

そして、火災発生時に、フラッシュ発光する光警報装置からの強い光が火災を感知していない火災感知器に入射して誤作動すると、実際に火災が発生している場所を正しく把握することができなくなる。また、受信機を操作して自動火災報知設備を復旧する際に、光警報装置の復旧(フラッシュ発光の停止)に時間がかかり、火災感知器の復旧よりも遅れるようなことがあると、火災感知器が光警報装置のフラッシュ発光によって再び誤作動してしまい、警報を停止できなくなる虞もある。   When a fire breaks out, if the strong light from the flashing light alarm device enters the fire detector that does not detect the fire and malfunctions, it is possible to correctly grasp the location where the fire actually occurred. Disappear. In addition, when operating the receiver to restore the automatic fire alarm system, it takes time to restore the light alarm device (stop flash emission), and there may be a delay behind the restoration of the fire detector. There is also a possibility that the sensor may malfunction again due to flash emission of the light alarm device, and the alarm cannot be stopped.

一方、火災感知器は一般に警戒区域の天井下面等の高い位置に配設されるが、このような火災感知器に光警報装置を一体化すると、障害物の影響を受け難いことからフラッシュ発光を視認し易く、また、火災感知器と光警報装置の電路を共用化することによって、省線化および電路工事の省力化が期待できる。さらに、火災感知器と光警報装置とを一体化することにより、両者の動作を整合させることが可能となる。すなわち、火災に起因する煙や炎からの放射といった物理現象の検出を行うタイミングと、フラッシュ発光のタイミングとが重ならないように制御し、フラッシュ発光による火災感知器の誤作動を防止することができる。これは、火災感知手段と警報手段とを一体化して単独で動作できる住宅用の火災警報器を、光警報装置と一体化した場合も同様である。本発明は、上記技術的思想に基づいて成されたものであり、光警報装置と一体化しながらもフラッシュ発光によって誤作動することがない火災感知器又は火災警報器を得ることを目的とする。   On the other hand, fire detectors are generally installed at high positions such as under the ceiling of the warning area. However, if a light alarm device is integrated with such a fire detector, it is difficult to be affected by obstacles. It is easy to see, and by sharing the electric circuit of the fire detector and the light alarm device, it can be expected to save wires and labor of electric circuit work. Furthermore, by integrating the fire detector and the light alarm device, it becomes possible to match the operations of both. In other words, it is possible to prevent the malfunction of the fire detector due to flash emission by controlling the timing to detect physical phenomena such as smoke and flame radiation caused by fire and the timing of flash emission. . The same applies to a case where a fire alarm for homes that can operate independently by integrating the fire detection means and the alarm means is integrated with the light alarm device. The present invention has been made based on the above technical idea, and an object thereof is to obtain a fire detector or a fire alarm that is integrated with a light alarm device but does not malfunction due to flash emission.

(1)本発明は、火災に起因する現象光学的に検出する検出手段を備え、該検出手段の検出結果に基づいて火災を感知する火災感知部と、発光手段と該発光手段を発光させる発光駆動手段とを備えた光警報部と、を具備する火災感知器又は火災警報器において、前記火災感知部は、前記現象の検出を行う検出期間と、前記現象の検出を行わない非検出期間とを有し、火災発生時に、前記非検出期間に前記発光手段を間欠的にフラッシュ発光させると共に、前記検出期間には前記フラッシュ発光をさせないように前記発光駆動手段を制御する制御手段を備える火災感知器又は火災警報器である。   (1) The present invention includes a detection means for optically detecting a phenomenon caused by a fire, a fire detection unit for detecting a fire based on a detection result of the detection means, a light emission means, and a light emission for causing the light emission means to emit light A fire alarm or a fire alarm having a driving means, wherein the fire sensor includes a detection period in which the phenomenon is detected, and a non-detection period in which the phenomenon is not detected. A fire detection system comprising: control means for controlling the light emission driving means so that the flash light emission is intermittently flashed during the non-detection period and the flash light emission is not caused during the detection period when a fire occurs. Or fire alarm.

(2)また、本発明は、前記(1)において、前記検出手段は、火災に起因する煙、炎、熱、ガスの少なくとも何れか1つ以上を検出する、火災感知器又は火災警報器である。   (2) Further, in the present invention, in the above (1), the detection means is a fire sensor or a fire alarm that detects at least one of smoke, flame, heat, and gas caused by a fire. is there.

(3)また、本発明は、前記(1)又は(2)において、前記発光手段は、外周部にリング状に配置される、火災感知器又は火災警報器である。   (3) Moreover, this invention is a fire detector or a fire alarm in which the said light emission means is arrange | positioned in an outer peripheral part in ring shape in the said (1) or (2).

(4)また、本発明は、前記(3)において、前記発光手段は、回転するように順次発光する、請求項3の火災感知器又は火災警報器である。   (4) Moreover, the present invention is the fire detector or the fire alarm according to claim 3, wherein the light emitting means sequentially emits light so as to rotate.

(5)また、本発明は、前記(1)又は(2)において、前記発光手段は、天板に1以上配置される、火災感知器又は火災警報器である。   (5) Moreover, this invention is a fire detector or a fire alarm in which the said light emission means is arrange | positioned 1 or more in a top plate in said (1) or (2).

(6)また、本発明は、前記(1)乃至(5)何れかにおいて、前記発光手段は、真横方向への放射を抑制するように調整された配光である火災感知器又は火災警報器である。   (6) Further, according to the present invention, in any of the above (1) to (5), the light emitting means is a fire detector or a fire alarm that is a light distribution adjusted so as to suppress radiation in a lateral direction. It is.

本発明の請求項1に記載の構成によると、天井下面等の高い位置に配設される火災感知器又は火災警報器に光警報部を備えることによって、障害物の影響を受け難いことからフラッシュ発光を視認し易く、また、火災感知部と光警報部の電路を共用化することによって、省線化および電路工事の省力化が期待できる。さらに、火災感知器等と光警報装置とを一体化したことにより、両者の動作を整合させることが可能となる。すなわち、火災に起因する煙や炎からの放射といった物理現象の検出を行わない非検出期間にフラッシュ発光し、上記物理現象の検出を行う検出期間にフラッシュ発光させないことにより、検出期間にフラッシュ発光のタイミングが重ならないように制御し、光警報部のフラッシュ発光が、火災に起因する現象を光学的に検出する検出手段に入ることによる火災感知器等の誤作動を防止することができる。   According to the structure of the first aspect of the present invention, since the fire detector or the fire alarm provided at a high position such as the lower surface of the ceiling is provided with the light alarm unit, the flash is not easily affected by the obstacle. Light emission is easy to visually recognize, and by sharing the electric circuit of the fire detection unit and the light alarm unit, it can be expected to save wires and labor of electric circuit work. Furthermore, by integrating the fire detector and the light alarm device, it becomes possible to match the operations of both. In other words, flash emission is performed during a non-detection period in which no physical phenomenon such as smoke or flame caused by fire is detected, and flash emission is not performed during the detection period in which the physical phenomenon is detected. Control is made so that timing does not overlap, and malfunction of a fire detector or the like due to the flash emission of the light alarm unit entering a detection means for optically detecting a phenomenon caused by a fire can be prevented.

また、本発明の請求項2に記載の構成によると、具体的に、煙、炎、熱、ガスの何れか1つ以上を検出する検出手段を備えた火災感知器又は火災警報器で、誤作動を防止するという効果を奏する。   Further, according to the configuration of claim 2 of the present invention, specifically, a fire detector or a fire alarm provided with a detecting means for detecting any one or more of smoke, flame, heat, and gas, There is an effect of preventing the operation.

また、本発明の請求項3に記載の構成によると、発光手段が火災感知器又は火災警報器の外周部にリング状に配置されるため、火災感知器又は火災警報器が設置された状態でフラッシュ発光を全方位から視認しやすいという効果を奏する。   Moreover, according to the structure of Claim 3 of this invention, since the light emission means is arrange | positioned in the ring shape in the outer peripheral part of a fire detector or a fire alarm device, in the state in which the fire detector or the fire alarm device was installed There is an effect that it is easy to visually recognize the flash emission from all directions.

また、本発明の請求項4に記載の構成によると、火災感知器又は火災警報器の外周部にリング状に配置された発光手段が順次点灯して回転するようにフラッシュ発光するため、さらに視認しやすく、また、順次点灯であるために瞬間消費電流を低く抑えることができるという効果を奏する。   Moreover, according to the structure of Claim 4 of this invention, since the light emission means arrange | positioned in the ring shape at the outer peripheral part of a fire detector or a fire alarm light-emits light so that it may light up sequentially and rotate, it is further visually recognized. In addition, since the light is sequentially turned on, the instantaneous current consumption can be reduced.

また、本発明の請求項5に記載の構成によると、発光手段が火災感知器又は火災警報器の天板に配置されているためにフラッシュ発光を視認しやすい。また、一度にフラッシュ発光するので、順次発光のように発光期間が長くならずに、周囲に対する発光を一度で済ませることができる。ひいては、1回のフラッシュ発光が終了してから次の発光までの間隔を長くとることができる。その間隔には火災の検出期間等が設定されるので、フラッシュ発光のタイミングが検出期間と重ならないように制御することが容易となる。   Moreover, according to the structure of Claim 5 of this invention, since the light emission means is arrange | positioned at the top plate of a fire detector or a fire alarm device, it is easy to visually recognize flash emission. In addition, since flash emission is performed at a time, the light emission period is not prolonged as in the case of sequential light emission, and light emission to the surroundings can be completed at once. As a result, the interval from the end of one flash emission to the next emission can be increased. Since the fire detection period is set at the interval, it is easy to control the flash emission timing so that it does not overlap the detection period.

また、本発明の請求項6に記載の構成によると、天井下面に配設される火災感知器等は他の火災感知器等から真横方向に位置することになるため、発光手段が真横方向への放射を抑制するように調整された配光とすることにより、他の火災感知器等からのフラッシュ発光があたりにくいという効果を奏する。   According to the configuration of the sixth aspect of the present invention, since the fire detectors and the like arranged on the lower surface of the ceiling are located in the lateral direction from other fire detectors and the like, the light emitting means is in the lateral direction. By making the light distribution adjusted so as to suppress the radiation of the light, there is an effect that the flash emission from other fire detectors or the like is difficult to hit.

本発明の実施例1に係る煙感知器1の外観図。1 is an external view of a smoke detector 1 according to Embodiment 1 of the present invention. 本発明の実施例1に係る煙感知器1の装置構成を表す図。The figure showing the apparatus structure of the smoke detector 1 which concerns on Example 1 of this invention. 本発明の実施例1に係る煙感知器1を設けた自動火災報知設備のシステムを表す図。The figure showing the system of the automatic fire alarm equipment which provided the smoke detector 1 which concerns on Example 1 of this invention. 本発明の実施例1に係る煙の検出期間と高輝度白色LED2の発光タイミングを説明するための図。The figure for demonstrating the light emission timing of the smoke detection period which concerns on Example 1 of this invention, and high-intensity white LED2. 本発明の実施例1に係る煙感知器1の変形例の外観図。The external view of the modification of the smoke detector 1 which concerns on Example 1 of this invention. 本発明の実施例2に係る煙感知器1を天井設置状態で下方から見た図。The figure which looked at the smoke detector 1 which concerns on Example 2 of this invention from the downward direction in the ceiling installation state. 本発明の実施例3に係る炎感知器10を天井設置状態で下方から見た図。The figure which looked at the flame detector 10 which concerns on Example 3 of this invention from the downward direction in the ceiling installation state. 煙感知器103と光警報装置101を別に設けた従来の火災警報システム。A conventional fire alarm system provided with a smoke detector 103 and a light alarm device 101 separately.

次に、実施例により本発明を実施する形態を説明する。   Next, embodiments for carrying out the present invention will be described by way of examples.

まず、図1に基づいて、本発明の実施例1に係る火災感知器の構成を説明する。1は自動火災報知設備を構成する本発明の実施例1に係る火災感知器としての光電式スポット型感知器であり(以下、煙感知器1と称する)、図1は実施例1に係る煙感知器1の外観図である。図1(a)は天井下面へ設置した状態で煙感知器1を側方から見た図であり、(b)は下方から見た図である。2は高輝度白色LED、3は感知器ヘッド、4は煙流入窓、5は天板、6はフィン、7は確認灯、8は感知器ヘッド3を取り付けるベースを示す。天板5はフィン6により感知器ヘッド3に連結している。確認灯7は火災感知した火災感知器を目視で識別できるように点灯する表示灯である。複数の高輝度白色LED2が、感知器ヘッド3の下面外周部にリング状に配列され、火災警報の際にフラッシュ発光する。高輝度白色LED2は、傾斜した感知器ヘッド3の下面から頭頂部が突出した状態でリング状に配列されており、設置状態で全方位から視認しやすくなっている。天板5の上部にはラビリンス(図示せず)に囲まれた暗室(図示せず)があり、暗室内の散乱光を検出して煙流入窓4から入った煙を感知する。煙流入窓4の内側には防虫網(図示せず)がラビリンスとの間に設けられ、虫や埃等の異物の侵入を防止する。   First, based on FIG. 1, the structure of the fire detector which concerns on Example 1 of this invention is demonstrated. 1 is a photoelectric spot type detector (hereinafter referred to as a smoke detector 1) as a fire detector according to a first embodiment of the present invention which constitutes an automatic fire alarm system. FIG. 1 shows a smoke according to the first embodiment. 1 is an external view of a sensor 1. FIG. FIG. 1A is a view of the smoke detector 1 viewed from the side in a state where it is installed on the lower surface of the ceiling, and FIG. 1B is a view of the smoke detector 1 viewed from below. 2 is a high brightness white LED, 3 is a sensor head, 4 is a smoke inflow window, 5 is a top plate, 6 is a fin, 7 is a confirmation lamp, and 8 is a base to which the sensor head 3 is attached. The top plate 5 is connected to the sensor head 3 by fins 6. The confirmation lamp 7 is an indicator lamp that is lit so that a fire detector that has detected a fire can be visually identified. A plurality of high-intensity white LEDs 2 are arranged in a ring shape on the outer periphery of the lower surface of the sensor head 3, and flash light is emitted during a fire alarm. The high-intensity white LEDs 2 are arranged in a ring shape with the top portion protruding from the lower surface of the tilted sensor head 3, and are easily visible from all directions in the installed state. There is a dark room (not shown) surrounded by a labyrinth (not shown) at the top of the top plate 5, and the scattered light in the dark room is detected to detect smoke entering from the smoke inflow window 4. An insect screen (not shown) is provided between the smoke inflow window 4 and the labyrinth to prevent entry of foreign matters such as insects and dust.

次に、図2により煙感知器1の装置構成を、図3により煙感知器1を設けた自動火災報知設備のシステムを説明する。図2の11は制御手段、12は検出発光素子、13は検出受光素子、14は発光駆動手段、15は増幅器、16はA/Dコンバータ、17は順次発光回路、18は送受信手段である。検出発光素子12と検出受光素子13は、ラビリンスで囲まれた暗室内に設置されている。本実施例の検出発光素子12はLEDである。制御手段11は、機能的構成として、火災感知に関する制御と情報処理を行う検出制御部111と、光警報に関する制御を行う光警報制御部112を有する。検出発光素子12、検出受光素子13、発光駆動手段14、増幅器15、A/Dコンバータ16、検出制御部111は、火災に起因する現象である煙を検出する検出手段であり、火災感知部を構成し、複数の高輝度白色LED2、順次発光回路17、光警報制御部112は、光で警報するための光警報部を構成している。また、図3の19は受信機である。   Next, an apparatus configuration of the smoke detector 1 will be described with reference to FIG. 2, and an automatic fire alarm system having the smoke detector 1 will be described with reference to FIG. In FIG. 2, 11 is a control means, 12 is a detection light emitting element, 13 is a detection light receiving element, 14 is a light emission drive means, 15 is an amplifier, 16 is an A / D converter, 17 is a sequential light emission circuit, and 18 is a transmission / reception means. The detection light emitting element 12 and the detection light receiving element 13 are installed in a darkroom surrounded by a labyrinth. The detection light emitting element 12 of the present embodiment is an LED. As a functional configuration, the control unit 11 includes a detection control unit 111 that performs control and information processing regarding fire detection, and a light alarm control unit 112 that performs control regarding a light alarm. The detection light emitting element 12, the detection light receiving element 13, the light emission drive means 14, the amplifier 15, the A / D converter 16, and the detection control unit 111 are detection means for detecting smoke, which is a phenomenon caused by fire, The plurality of high-intensity white LEDs 2, the light emitting circuit 17, and the light alarm control unit 112 constitute a light alarm unit for alarming with light. Further, reference numeral 19 in FIG. 3 denotes a receiver.

火災感知部では一定時間ごとに煙の検出を行う検出期間になると、検出制御部111が発光駆動手段14を制御して検出発光素子12を発光させる。検出発光素子12と検出受光素子13は、互いの光軸がずれるように配置されており、平常時は検出発光素子12の光が検出受光素子13に直接入らないようになっている。火災により煙が発生し、煙流入窓4から暗室に煙が流入すると、検出期間に発光する検出発光素子12の光は煙によって散乱して、その散乱光を検出受光素子13が検出する。検出受光素子13の受光出力は増幅器15で増幅された後にA/Dコンバータ16でデジタル化されて検出制御部111に入力し、このように光学的に煙を検出する検出手段の検出結果に基づいて火災が感知される。
そして、火災を感知した煙感知器1は、送受信手段18を介して火災感知信号を受信機19に送信する。この火災感知信号を受信した受信機19が火災と判断すると、受信機19は高輝度白色LED2のフラッシュ発光を開始させるための火災警報信号を煙感知器1に送信する。各煙感知器1では、送受信手段18を介して制御手段11が受信機19からの火災警報信号を受信する。
火災警報信号を受信すると、光警報部では制御手段11の光警報制御部112が発光信号を順次発光回路17に出力し、順次発光回路17は図1の複数の高輝度白色LED2が順次フラッシュ発光させる。これにより、高輝度白色LED2が回転するようにフラッシュ発光して全方位から視認され、聴覚障害者等に対して警報を視覚的に報知することができる。
In a detection period in which smoke is detected at regular intervals in the fire detection unit, the detection control unit 111 controls the light emission drive unit 14 to cause the detection light emitting element 12 to emit light. The detection light-emitting element 12 and the detection light-receiving element 13 are arranged so that their optical axes are shifted from each other, and the light from the detection light-emitting element 12 does not directly enter the detection light-receiving element 13 in normal times. When smoke is generated by a fire and smoke flows into the dark room from the smoke inflow window 4, the light of the detection light emitting element 12 that emits light during the detection period is scattered by the smoke, and the detection light receiving element 13 detects the scattered light. The light reception output of the detection light receiving element 13 is amplified by the amplifier 15, digitized by the A / D converter 16 and input to the detection control unit 111, and based on the detection result of the detection means for optically detecting smoke in this way. A fire is detected.
Then, the smoke detector 1 that has detected a fire transmits a fire detection signal to the receiver 19 via the transmission / reception means 18. When the receiver 19 that has received this fire detection signal determines that a fire has occurred, the receiver 19 transmits a fire alarm signal for starting flash emission of the high-intensity white LED 2 to the smoke detector 1. In each smoke detector 1, the control means 11 receives a fire alarm signal from the receiver 19 through the transmission / reception means 18.
When the fire alarm signal is received, the light alarm control unit 112 of the control means 11 sequentially outputs the light emission signal to the light emission circuit 17 in the light alarm unit, and the light emission circuit 17 sequentially flashes the plurality of high brightness white LEDs 2 in FIG. Let Thereby, flash light is emitted so that the high-intensity white LED 2 rotates, and it is visually recognized from all directions, and a warning can be visually notified to a hearing impaired person or the like.

次に、火災警報の際のフラッシュ発光による煙感知器1の誤作動とその防止について説明する。図1の煙感知器1では高輝度白色LED2が煙流入窓4の近傍にあり、高輝度白色LED2からの強い光が煙流入窓4に入射し、減衰しながらも内側のラビリンスを抜けて暗室にノイズ光として入り込む虞がある。検出受光素子13が受光する煙による散乱光は微弱であることから、このようなノイズ光が僅かであっても検出受光素子13で受光されてしまうと煙感知器1は誤作動を起こす虞がある。そこで、検出期間以外は煙の検出を行わない非検出期間とし、非検出期間では検出受光素子13が受光出力しても受け付けないようにしておく。このようにしておくことにより、検出期間以外、すなわち非検出期間に暗室に光が入射するようなことがあっても誤作動させないようにすることができる。そして、制御手段11の光警報制御部112は、検出制御部111からの検出期間の情報に基づいて、高輝度白色LED2の発光タイミングが煙の検出期間と重ならないように順次発光回路17を制御し、高輝度白色LED2の光で煙感知器1が誤作動しないようにする。   Next, malfunction of the smoke detector 1 due to flash emission at the time of a fire alarm and its prevention will be described. In the smoke detector 1 of FIG. 1, the high-intensity white LED 2 is in the vicinity of the smoke inflow window 4, and strong light from the high-intensity white LED 2 enters the smoke inflow window 4, and passes through the inner labyrinth while being attenuated. There is a risk of entering as noise light. Since the scattered light due to the smoke received by the detection light receiving element 13 is weak, the smoke detector 1 may malfunction if it is received by the detection light receiving element 13 even if such noise light is slight. is there. In view of this, the non-detection period during which smoke is not detected other than the detection period is set so as not to be received even if the detection light receiving element 13 receives and outputs light. By doing in this way, it is possible to prevent malfunctions even if light enters the dark room outside the detection period, that is, during the non-detection period. Then, the light alarm control unit 112 of the control unit 11 sequentially controls the light emission circuit 17 based on the detection period information from the detection control unit 111 so that the light emission timing of the high-intensity white LED 2 does not overlap with the smoke detection period. In addition, the smoke detector 1 is prevented from malfunctioning by the light of the high-intensity white LED 2.

図4は、煙の検出期間と高輝度白色LED2の発光タイミングを説明するための図である。横軸は時間を示し、図中、左方から右方へと時間が流れるように記載されている。Sは火災に起因する現象である煙の検出を行う検出期間、NSは検出を行わない非検出期間、Tは検出期間Sの周期、Fsは高輝度白色LED2が順次発光する順次発光期間、Aは火災状態を表し、図4(a)は煙の検出期間Sのタイミング、(b)はフラッシュ発光する高輝度白色LED2の順次発光回路17による順次発光のタイミング、(c)は火災状態Aのタイミングを示す。図4(a)に示すように、検出期間Sおよび非検出期間NSは一定の期間であり、期間Tごとに繰り返す。火災感知部では、検出受光素子13に光が入ったとき、図4(a)における検出期間Sでは火災感知するが、非検出期間NSでは火災感知しない。具体的には、例えば、非検出期間NSでは検出受光素子13の受光に基づく信号を検出制御部111が受け付けない。また、検出受光素子13からの信号が非検出期間NSに検出されることがないように、増幅器15、A/Dコンバータ16の出力を遮断したり、増幅器15、A/Dコンバータ16への電源供給を停止したりしてもよい。また、非検出期間NSでは、A/Dコンバータ16の出力情報を検出制御部111に取り込む際に光非検出の値に書き換えたり、その出力情報を一度、検出制御部111に取り込んで記憶した後に光非検出の値に書き換えたりするようにしてもよい。   FIG. 4 is a diagram for explaining the smoke detection period and the light emission timing of the high-intensity white LED 2. The horizontal axis indicates time, and is described so that time flows from left to right in the figure. S is a detection period in which smoke is detected as a phenomenon caused by fire, NS is a non-detection period in which no detection is performed, T is a period of the detection period S, Fs is a sequential light emission period in which the high-intensity white LED 2 sequentially emits light, A 4A shows the fire state, FIG. 4A shows the timing of the smoke detection period S, FIG. 4B shows the timing of sequential light emission by the sequential light emission circuit 17 of the high-intensity white LED 2 that emits flash, and FIG. Indicates timing. As shown in FIG. 4A, the detection period S and the non-detection period NS are constant periods and are repeated every period T. In the fire detection unit, when light enters the detection light receiving element 13, fire detection is performed in the detection period S in FIG. 4A, but fire detection is not performed in the non-detection period NS. Specifically, for example, in the non-detection period NS, the detection control unit 111 does not accept a signal based on light reception by the detection light receiving element 13. Further, the output of the amplifier 15 and the A / D converter 16 is cut off and the power to the amplifier 15 and the A / D converter 16 is prevented so that the signal from the detection light receiving element 13 is not detected in the non-detection period NS. The supply may be stopped. Further, in the non-detection period NS, after the output information of the A / D converter 16 is taken into the detection control unit 111, it is rewritten to a value of non-detection of light, or the output information is once taken into the detection control unit 111 and stored. You may make it rewrite to the value of light non-detection.

図4(a)に示すように、火災感知部では周期Tの一定時間ごとに検出期間Sを設けて、検出制御部111の制御により検出発光素子12の発光と検出受光素子13による受光を繰り返している。そして、隣り合う2つの検出期間Sの間に位置する非検出期間NSでは火災感知を行わない。煙感知器1は検出期間Sに煙を検出して火災を感知すると受信機19に火災感知信号を送信する。受信機19は火災と判断すると火災状態Aの期間に火災警報信号を送出する。この火災警報信号は、接点信号であってもよいし、シリアル通信や無線通信等によるデータ通信であってもよく、自動火災報知設備1の形態に応じて適宜決定される。
図4(c)に示す火災状態Aで煙感知器1は受信機19からの火災警報信号を受信するが、光警報部ではすぐにはフラッシュ発光を開始しない。光警報制御部112は、火災感知部における検出期間Sの情報に基づいて、図4(a),(b)に示すように次の検出期間Sが終了してからさらに遅延時間d後に順次発光回路17を作動させて順次発光期間Fsを開始し、その次の検出期間Sの前に終了させる。すなわち、フラッシュ発光は非検出期間NSに行われる。その後も、非検出期間NSごとに順次発光期間Fsを設けてフラッシュ発光する。このようにして、煙感知器1内で煙の検出期間Sに、高輝度白色LED2の順次発光が重ならないように光警報制御部112が順次発光回路17を制御し、フラッシュ発光による煙感知器1の誤作動を防止する。
As shown in FIG. 4A, the fire sensing unit provides a detection period S at regular intervals of the period T, and repeats light emission of the detection light emitting element 12 and light reception by the detection light receiving element 13 under the control of the detection control unit 111. ing. In the non-detection period NS located between two adjacent detection periods S, fire detection is not performed. When the smoke detector 1 detects smoke during the detection period S and senses a fire, it transmits a fire detection signal to the receiver 19. When the receiver 19 determines that there is a fire, it sends out a fire alarm signal during the fire state A. This fire alarm signal may be a contact signal or data communication by serial communication, wireless communication, or the like, and is appropriately determined according to the form of the automatic fire alarm facility 1.
In the fire state A shown in FIG. 4C, the smoke detector 1 receives a fire alarm signal from the receiver 19, but the light alarm unit does not immediately start flash emission. Based on the information of the detection period S in the fire detection unit, the light alarm control unit 112 sequentially emits light after a delay time d after the next detection period S ends, as shown in FIGS. 4 (a) and 4 (b). The circuit 17 is activated to sequentially start the light emission period Fs, and is ended before the next detection period S. That is, flash light emission is performed during the non-detection period NS. Thereafter, the light emission period Fs is sequentially provided for each non-detection period NS to perform flash light emission. In this manner, during the smoke detection period S in the smoke detector 1, the light alarm control unit 112 sequentially controls the light emission circuit 17 so that the sequential light emission of the high-intensity white LEDs 2 does not overlap, and the smoke detector by flash light emission. 1 malfunction is prevented.

したがって、フラッシュ発光を自機の火災感知部で感知してしまう誤作動がない。そうすると、火災感知していない煙感知器1の確認灯が点灯するようなこともない。また、煙感知器1が上記のように誤作動しないため、火災の発生場所を把握できなくなることがない。さらに、防災センタ要員らが復旧操作した後、自動火災報知設備が復旧動作している際に、フラッシュ発光の停止が火災感知部の復旧より遅れたとしても、火災感知部が誤作動して復旧できなくなることはない。また、複数の高輝度白色LED2を順次発光させるので、これらを同時発光させた場合よりも、発光時のピーク電力を抑制することができる。さらに、施設内の全ての煙感知器1や、少なくとも、階層や区画ごとの系統分け、連続するアドレス、等で規定される隣接する煙感知器1について、フラッシュ発光又は検出期間Sを同期させるように制御したり、隣接する他の煙感知器1にフラッシュ発光が直接入射しないように高輝度白色LED2の真横方向の放射を抑制するように配光特性を調整したりして、他の煙感知器1が誤作動しないようにしてもよい。このように構成することにより、火災発生時に煙感知器1が一斉にフラッシュ発光した際に、煙を感知していない煙感知器1の誤作動を防止することができる。ひいては、火災の発生場所が把握できなくなることもない。   Therefore, there is no malfunction that the flash light is detected by the fire detection unit of the own aircraft. If it does so, the confirmation light of the smoke detector 1 which is not detecting fire will not light up. Further, since the smoke detector 1 does not malfunction as described above, it is not possible to grasp the place where the fire has occurred. In addition, after the disaster prevention center personnel perform recovery operations, when the automatic fire alarm system is in recovery operation, even if the flash emission stop is delayed from the recovery of the fire detection unit, the fire detection unit malfunctions and recovers It will not be impossible. Moreover, since several high-intensity white LED2 is light-emitted one by one, the peak electric power at the time of light emission can be suppressed rather than the case where these are light-emitted simultaneously. Further, the flash emission or the detection period S is synchronized with respect to all smoke detectors 1 in the facility, and at least adjacent smoke detectors 1 defined by a system classification, a continuous address, etc. Or by adjusting the light distribution characteristics so as to suppress the radiation in the lateral direction of the high-intensity white LED 2 so that the flash emission does not directly enter the other smoke detectors 1 adjacent to each other. The device 1 may be prevented from malfunctioning. By configuring in this way, it is possible to prevent malfunction of the smoke detector 1 that does not detect smoke when the smoke detector 1 flashes all at once in the event of a fire. As a result, the location of the fire is not lost.

実施例1では、図4(b)に示すように、高輝度白色LED2が1つの順次発光期間Fsに30回順次発光し、高輝度白色LED2を8個備えた図1の煙感知器1ではフラッシュ発光が4周弱回転する。なお、順次発光はこのようなものに限らず、例えば、順次発光期間に高輝度白色LED2を複数回回転させることなく、1回転だけ順次発光させるようにしてもよい。また、隣接する高輝度白色LED2の発光を1つ以上とばして、五芒星や六芒星等を描くように、全体として回転するように発光させてもよいし、回転するような順序でなくてもよい。   In Example 1, as shown in FIG. 4B, the high-intensity white LED 2 sequentially emits 30 times in one sequential light emission period Fs, and the smoke detector 1 in FIG. 1 having eight high-intensity white LEDs 2 is used. The flash emission rotates about 4 rounds. Note that the sequential light emission is not limited to this, and for example, the high-intensity white LED 2 may be caused to sequentially emit light only once in a sequential light emission period without being rotated a plurality of times. Alternatively, one or more of the adjacent high-intensity white LEDs 2 may be skipped to emit light so as to rotate as a whole so as to draw a pentagram, a six-pointed star, or the like. Good.

図4に示した例では、周期Tの検出期間Sごとに1回の順次発光期間Fsを設けているが、順次発光期間Fsがある周期Tの次の周期Tは休止期間として、検出期間Sの周期T2回ごとに1回の順次発光期間Fsを設けるようにしても良い。このようにフラッシュ発光の休止期間を設けることにより火災感知部よりも大きな電力を消費する光警報部の電力消費を低減することができる。またこのように発光間隔を延ばすことにより、その間をフラッシュ発光させるための充電期間にあてて、瞬時消費電力を増加させないようにしてもよい。そして、このように瞬時消費電力を増加させないようにして、複数又は全ての高輝度白色LED2を同時に発光させるようにしてもよい。   In the example shown in FIG. 4, one sequential light emission period Fs is provided for each detection period S of the period T, but the next period T after the period T with the sequential light emission period Fs is set as a pause period, and the detection period S One sequential light emission period Fs may be provided every period T2. In this way, by providing the flash emission pause period, it is possible to reduce the power consumption of the light alarm unit that consumes more power than the fire detection unit. Further, by extending the light emission interval in this way, the instantaneous power consumption may not be increased during the charging period for flash emission. Then, a plurality or all of the high-intensity white LEDs 2 may be caused to emit light simultaneously without increasing the instantaneous power consumption.

フラッシュ発光に休止期間を設ける具体的な例としては、例えば検出期間Sの周期Tが3秒である場合、0.2秒の検出期間Sと2.8秒の非検出期間NSを設け、非検出期間NSでは、0.5秒の遅延時間dの後に光警報部を2秒間順次発光させるようにする。順次発光の休止後、0.3秒で次の検出期間Sとなる。それから次の1周期Tである3秒の間は順次発光させない。そして、その次の検出期間Sが終了してからさらに遅延時間dである0.5秒後に順次発光を開始し、2秒後に休止する。なお、順次発光期間Fsは、検出期間Sの周期Tの2回ごとに設けるものとは限らず、3回以上ごとに設けるようにしてもよい。   As a specific example of providing a pause period for flash emission, for example, when the period T of the detection period S is 3 seconds, a detection period S of 0.2 seconds and a non-detection period NS of 2.8 seconds are provided. In the detection period NS, the light alarm unit sequentially emits light for 2 seconds after a delay time d of 0.5 seconds. After the sequential light emission is stopped, the next detection period S is reached in 0.3 seconds. Then, the light is not emitted sequentially for the next one period T, 3 seconds. Then, after the next detection period S ends, the light emission is sequentially started 0.5 seconds after the delay time d, and is stopped after 2 seconds. Note that the sequential light emission period Fs is not necessarily provided every two periods T of the detection period S, and may be provided every three or more times.

次に、実施例1に係る煙感知器1の変形例の外観を図5に示す。高輝度白色LED2の配置は、図5のように感知器ヘッド3の外周部である側面に高輝度白色LED2をリング状に配列したものとしてもよい。図1と同様に図5(a)は天井下面に設置した状態で側方から見た図であり、(b)は下方から見た図である。この高輝度白色LED2は感知器ヘッド3の外側へは膨出していない。そして、高輝度白色LED2の位置が自機の煙流入窓4に光が直接あたらない構造であるため、高輝度白色LED2のフラッシュ発光による自機の誤作動を防止することができる。また、隣接する他の煙感知器1の誤作動も防止することができる。すなわち、施設内の全ての煙感知器1や、少なくとも、階層や区画ごとの系統分け、連続するアドレス、等で規定される隣接する煙感知器1について、フラッシュ発光のタイミング又は検出期間Sを同期させるように制御したり、隣接する他の煙感知器1にフラッシュ発光が直接入射しないように高輝度白色LED2の真横方向の放射を抑制するように配光特性を調整したりすることにより、隣接する他の煙感知器1の誤作動を防止できる。   Next, the external appearance of the modification of the smoke detector 1 which concerns on Example 1 is shown in FIG. The arrangement of the high-intensity white LEDs 2 may be such that the high-intensity white LEDs 2 are arranged in a ring shape on the side surface that is the outer peripheral portion of the sensor head 3 as shown in FIG. Like FIG. 1, FIG. 5 (a) is a view seen from the side in a state of being installed on the lower surface of the ceiling, and FIG. 5 (b) is a view seen from below. The high-intensity white LED 2 does not bulge outside the sensor head 3. And since the position of the high brightness white LED 2 is a structure in which light does not directly hit the smoke inflow window 4 of the own machine, the malfunction of the own machine due to the flash emission of the high brightness white LED 2 can be prevented. Further, malfunction of other adjacent smoke detectors 1 can also be prevented. That is, the timing of flash emission or the detection period S is synchronized with respect to all smoke detectors 1 in the facility, and at least adjacent smoke detectors 1 defined by a system classification, a continuous address, etc. By adjusting the light distribution characteristics so as to suppress the radiation in the lateral direction of the high-intensity white LED 2 so that the flash emission does not directly enter the other adjacent smoke detectors 1. It is possible to prevent malfunctions of other smoke detectors 1 that do.

また、図5において、高輝度白色LED2をベース8の側面に設け、煙感知器1が火災警報信号を受信すると、高輝度白色LED2へ電力と発光信号とを供給してフラッシュ発光による警報を開始するようにしても良い。この構成でも、上記の図5の煙感知器1と同様に、誤作動を防止できる構造となる。さらに、高輝度白色LED2をベース8の側面に設ける構成にすると、高輝度白色LED2等を設けた光警報用ベースと、設けない通常ベースの2種類を用意することにより、感知器ヘッド3を共通化してコストを削減することができる。   In FIG. 5, a high-intensity white LED 2 is provided on the side surface of the base 8, and when the smoke detector 1 receives a fire alarm signal, power and a light emission signal are supplied to the high-intensity white LED 2 to start an alarm by flash emission. You may make it do. Even in this configuration, a malfunction can be prevented as in the smoke detector 1 of FIG. 5 described above. Furthermore, if the configuration is such that the high-intensity white LED 2 is provided on the side surface of the base 8, the sensor head 3 can be shared by preparing two types of light alarm bases with the high-intensity white LEDs 2 and the normal base without them. To reduce costs.

ところで、煙感知器1には、自機が火災を感知したことを表示する確認灯7が設けられるが、この確認灯7を廃し、その機能を光警報部の発光手段である高輝度白色LED2に持たせるようにしてもよい。光警報部としての発光であるか、確認灯としての発光であるかは、発光態様を変えることによって判別することができる。発光態様としては、例えば、発光周期を異なるものとしたり、発光輝度や発光色を変えるようにしたりすることができる。発光色を変えるには、高輝度白色LED2に代えて、2色以上の高輝度LEDを用いるようにすればよい。
なお、火災を感知した煙感知器1が、受信機19から火災警報信号を受信したときの光警報部の発光手段の発光態様は、火災を警報するための間欠的なフラッシュ発光であると共に、確認灯としての発光であることが認識できるような発光態様であればよい。したがって、上記のように火災感知していない火災感知器と異なる発光周期としてもよいし、間欠的なフラッシュ発光を行っていない期間に、フラッシュ発光と明確に区別できる程度の低い輝度で点灯させたり、異なる色で点灯させたりするようにしてもよい。
By the way, the smoke detector 1 is provided with a confirmation light 7 for indicating that the own device has detected a fire. However, the confirmation light 7 is eliminated, and its function is a high-intensity white LED 2 which is a light emitting means of the light alarm unit. You may make it have. Whether the light is emitted as the light alarm unit or the confirmation lamp can be determined by changing the light emission mode. As the light emission mode, for example, the light emission cycle can be made different, or the light emission brightness and the light emission color can be changed. In order to change the emission color, two or more high-intensity LEDs may be used instead of the high-intensity white LED 2.
The light emission mode of the light emitting means of the light alarm unit when the smoke detector 1 that has detected a fire receives a fire alarm signal from the receiver 19 is intermittent flash emission for alarming a fire, Any light emission mode may be used as long as it can be recognized as light emission as a confirmation lamp. Therefore, it may have a light emission period different from that of a fire detector that does not detect fire as described above, or it may be lit at a low brightness that can be clearly distinguished from flash light emission during periods when intermittent flash light emission is not performed. Alternatively, they may be lit in different colors.

図6は、本発明の実施例2に係る煙感知器1を天井下面へ設置した状態で下方から見た図である。図1と同じ構成は同じ符号で表わし、その説明を省略する。実施例2では、実施例1の煙感知器1と異なり、光警報部の発光手段として、1つ又は複数の高輝度白色LEDを一つの基板上に配置した高輝度白色LEDランプ9を用いる。高輝度白色LEDランプ9は天板5に設けられているが、どの方向からも視認することができるように天板5より突出するように設けるとよい。あるいは、直下から側方近傍までの範囲に配光できるようにレンズやプリズムを用いるようにしてもよい。高輝度白色LEDランプ9は複数設けてもよく、天板に1以上配置される。実施例1では、複数の高輝度白色LED2を順次発光したために、周囲に対して発光を行うまでに一定の時間を要したが、実施例2では高輝度白色LEDランプ9は一度にフラッシュ発光するので、周囲に対する発光を一度で済ませることができる。ひいては、1回のフラッシュ発光が終了してから次の発光までの間隔を長くとることができ、その間を次のフラッシュ発光を行うための電力を蓄える充電期間にあてて瞬時消費電力を抑えることもでき、遅延時間dにあててマージンをとることもできる。図6の実施例では高輝度白色LEDランプ9は天板5に設けられているため、フラッシュ光が煙流入窓に入射せず、自機のフラッシュ発光による誤作動が起こらない。   FIG. 6 is a view of the smoke detector 1 according to the second embodiment of the present invention as viewed from below with the smoke detector 1 installed on the lower surface of the ceiling. The same components as those in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted. In the second embodiment, unlike the smoke detector 1 of the first embodiment, a high-intensity white LED lamp 9 in which one or a plurality of high-intensity white LEDs are arranged on one substrate is used as the light emitting means of the light alarm unit. Although the high-intensity white LED lamp 9 is provided on the top plate 5, it may be provided so as to protrude from the top plate 5 so as to be visible from any direction. Alternatively, a lens or a prism may be used so that light can be distributed in a range from directly below to the vicinity of the side. A plurality of high-intensity white LED lamps 9 may be provided, and one or more high-intensity white LED lamps 9 are arranged on the top plate. In the first embodiment, since the plurality of high-intensity white LEDs 2 emit light sequentially, it takes a certain time to emit light to the surroundings. However, in the second embodiment, the high-intensity white LED lamp 9 flashes at a time. Therefore, the light emission to the surroundings can be completed at once. As a result, the interval from the end of one flash emission to the next emission can be extended, and the instantaneous power consumption can be suppressed during the charging period for storing the power for performing the next flash emission. It is also possible to take a margin for the delay time d. In the embodiment of FIG. 6, since the high-intensity white LED lamp 9 is provided on the top plate 5, the flash light does not enter the smoke inflow window, and the malfunction due to the flash emission of the own device does not occur.

図7は、本発明の実施例3に係る炎感知器10を天井下面に設置した状態で下方から見た図である。炎感知器10の中央には、炎からの放射(例えば、赤外線や紫外線)を検出する炎検出部である受光素子20を有する。炎感知器10は実施例1と同様の光警報部を有し、高輝度白色LED2は感知器カバー21の下面の外周近くへリング状に配列して、火災警報の際に強い光で発光する。受光素子20は感知器カバー21の下面から奥まった位置にあるため、高輝度白色LED2の光は直接には受光素子20に入ることはなく、自機のフラッシュ発光による誤作動が起こらない。また、高輝度白色LED2は、外側に傾斜した感知器カバー21の下面から少し盛り上がった形状であり、リング状にも配列されており、設置状態で全方位から視認しやすいものである。   FIG. 7 is a view of the flame detector 10 according to the third embodiment of the present invention as viewed from below with the flame detector 10 installed on the bottom surface of the ceiling. In the center of the flame detector 10, there is a light receiving element 20 that is a flame detection unit that detects radiation (for example, infrared rays or ultraviolet rays) from the flame. The flame detector 10 has the same light alarm unit as in the first embodiment, and the high-intensity white LEDs 2 are arranged in a ring shape near the outer periphery of the lower surface of the sensor cover 21 to emit light with strong light at the time of fire alarm. . Since the light receiving element 20 is in a position recessed from the lower surface of the sensor cover 21, the light of the high-intensity white LED 2 does not directly enter the light receiving element 20, and malfunction due to flash emission of the own device does not occur. The high-intensity white LED 2 has a shape that is slightly raised from the lower surface of the sensor cover 21 that is inclined outward, and is also arranged in a ring shape, so that it can be easily seen from all directions in the installed state.

実施例3の炎感知器10は、炎からの放射を受光素子20で検出して火災を感知するが、他の炎感知器10等の高輝度白色LED2から発した強いフラッシュ光が受光素子20にあたると誤作動の虞がある。そこで、実施例1,2と同様に高輝度白色LED2のフラッシュ発光を炎の非検出期間NSに行うと共に、少なくとも隣接する炎感知器10等の検出期間Sと順次発光期間Fsを同期させることにより誤作動を防止することができる。すなわち、実施例1と同様に、炎感知器10では検出期間Sに、光警報部の順次発光を行わないようにする。   The flame detector 10 according to the third embodiment detects a fire by detecting the radiation from the flame by the light receiving element 20, but strong flash light emitted from the high-intensity white LED 2 such as another flame detector 10 is received by the light receiving element 20. If it hits, there is a risk of malfunction. Therefore, as in the first and second embodiments, flash emission of the high-intensity white LED 2 is performed in the flame non-detection period NS, and at least the detection period S of the adjacent flame detectors 10 and the like are sequentially synchronized with the light emission period Fs. Malfunctions can be prevented. That is, as in the first embodiment, the flame detector 10 is configured not to sequentially emit light from the light alarm unit during the detection period S.

実施例3の炎感知器10における検出期間Sおよび非検出期間NSとフラッシュ発光のタイミングは図4と同様であるが、炎感知器10では、実施例1の煙感知器1よりも長い検出期間Sに炎からの放射の検出を行い、それ以外の期間は炎からの放射の検出を行わない非検出期間NSとする。炎感知器10は、炎からの放射をパッシブに検出するものであるので、実施例1における検出発光素子12および発光駆動手段14に相当する構成はない。その他は、実施例1と同様であるので説明を省略する。   The detection period S and non-detection period NS and the timing of flash emission in the flame sensor 10 of the third embodiment are the same as those in FIG. 4, but the flame sensor 10 has a longer detection period than the smoke sensor 1 of the first embodiment. The radiation from the flame is detected in S, and the non-detection period NS in which the radiation from the flame is not detected in other periods. The flame detector 10 passively detects the radiation from the flame, so there is no configuration corresponding to the detection light emitting element 12 and the light emission drive means 14 in the first embodiment. Others are the same as in the first embodiment, and a description thereof will be omitted.

上記実施例の火災感知器としての煙感知器1や炎感知器10は、これに限定されるものではなく、火災に起因する現象を光学的に検出する検出手段の検出結果に基づいて火災を感知する火災感知部を有する火災感知器に適用できるものであり、その検出手段は、火災に起因する熱、煙、放射、ガスの少なくとも一つ以上を検出するものであれば本発明を適用する対象となり得る。火災感知器は、熱検出部を備えた熱感知器(例えば、定温式スポット型感知器、差動式スポット型感知器、差動式分布型感知器)、減光式の煙検出部を備えた光電式分離型感知器、ガス検出部を備えたガス漏れ火災検知器、等でもよい。また、これらの検出部を複数備えた複合式の火災感知器であってもよい。さらに、高輝度白色LED2は、これに限定されるものではなく、フラッシュ発光をするものであればよく、キセノン管等の他の発光手段でもよい。   The smoke detector 1 and the flame detector 10 as the fire detector of the above embodiment are not limited to this, and the fire is detected based on the detection result of the detection means for optically detecting the phenomenon caused by the fire. The present invention can be applied to a fire detector having a fire detector for sensing, and the detection means can detect at least one of heat, smoke, radiation, and gas caused by a fire. Can be a target. The fire sensor has a heat sensor (eg, a constant temperature spot sensor, a differential spot sensor, a differential distribution sensor) with a heat detector, and a light-reducing smoke detector. Alternatively, a photoelectric separation type detector, a gas leak fire detector provided with a gas detection unit, or the like may be used. Further, it may be a composite fire detector provided with a plurality of these detection units. Further, the high-intensity white LED 2 is not limited to this, and any other light emitting means such as a xenon tube may be used as long as it emits flash light.

上記実施例の火災感知器としての煙感知器1や炎感知器10では、図3のように受信機19と煙感知器1や炎感知器10とを直接接続しているが、これに限るものではなく、受信機19と煙感知器1や炎感知器10との間に中継装置を介在させるようにしてもよい。例えば、受信機19からの火災警報信号を受信する警報信号受信手段と、煙感知器1や炎感知器10の光警報部を駆動するための電力を供給する電源装置として設けられ、停電時でも所定時間の動作を可能とする二次電池から成る予備電源を備えた電源装置と、煙感知器1や炎感知器10の光警報部を動作させる信号を出力する信号出力手段と、上記警報信号受信手段が受信した火災警報信号に基づいて上記信号出力手段を介して煙感知器1や炎感知器10の光警報部を動作させる制御手段と、を有する中継装置を設けてもよい。また、この中継装置から煙感知器1や炎感知器10へ電源を供給する電源線に、煙感知器1や炎感知器10の光警報部を動作させる信号を重畳させるようにしてもよい。このように、煙感知器1や炎感知器10のための中継装置を設けることにより、複数の煙感知器1や炎感知器10における光警報部が動作するときに消費する大きな電力を、電力供給に限界がある受信機19ではなく、煙感知器1や炎感知器10の光警報部のために設けた専用の上記中継装置から供給することができる。   In the smoke detector 1 and the flame detector 10 as the fire detector of the above embodiment, the receiver 19 and the smoke detector 1 and the flame detector 10 are directly connected as shown in FIG. Instead of this, a relay device may be interposed between the receiver 19 and the smoke detector 1 or the flame detector 10. For example, an alarm signal receiving means for receiving a fire alarm signal from the receiver 19 and a power supply device for supplying power for driving the light alarm unit of the smoke detector 1 or the flame detector 10 are provided. A power supply device having a standby power source composed of a secondary battery capable of operating for a predetermined time; signal output means for outputting a signal for operating a light alarm unit of the smoke detector 1 or the flame detector 10; and the alarm signal You may provide the relay apparatus which has a control means to operate the light alarm part of the smoke detector 1 or the flame detector 10 via the said signal output means based on the fire alarm signal which the receiving means received. Further, a signal for operating the light alarm unit of the smoke detector 1 or the flame detector 10 may be superimposed on a power supply line that supplies power from the relay device to the smoke detector 1 or the flame detector 10. Thus, by providing the relay device for the smoke detector 1 and the flame detector 10, the large electric power consumed when the light alarm unit in the plurality of smoke detectors 1 and flame detectors 10 operates can be reduced. It can be supplied from the dedicated relay device provided for the light alarm unit of the smoke detector 1 or the flame detector 10 instead of the receiver 19 having a limited supply.

また、上記実施例の火災感知器としての煙感知器1や炎感知器10では、受信機19と煙感知器1や炎感知器10とを通信線を介して接続しているが、無線通信を介して通信するものであってもよい。さらに、受信機19と煙感知器1や炎感知器10との間に無線中継装置を介在させるようにしてもよい。例えば、受信機19からの火災警報信号を有線又は無線で受信する警報信号受信手段と、煙感知器1や炎感知器10を動作させる無線信号を出力する通信手段と、上記警報信号受信手段が受信した火災警報信号に基づいて上記通信手段を介して煙感知器1や炎感知器10を動作させる制御手段と、を有する無線中継装置を設けてもよい。このとき、煙感知器1や炎感知器10は、送受信手段18を上記無線中継装置の通信手段と無線通信するための通信手段とし、図示しない電池電源を備えるようにする。このように、煙感知器1や炎感知器10を無線式とし、煙感知器1や炎感知器10等の火災感知手段と受信機19とから成る自動火災報知設備とを無線中継器により無線接続することにより、煙感知器1や炎感知器10の設置が容易となる。例えば、既設の建築物に新たに煙感知器1や炎感知器10を配設するとき、新たに電路工事を行わずにリニューアル工事することができるという効果を奏する。また、建築物の改築、改装、間仕切り変更等による煙感知器1や炎感知器10の設置場所変更は、電路による制約がないので大幅に自由度が高まるという効果を奏する。   In the smoke detector 1 and the flame detector 10 as the fire detector of the above embodiment, the receiver 19 and the smoke detector 1 and the flame detector 10 are connected via a communication line. You may communicate via. Further, a wireless relay device may be interposed between the receiver 19 and the smoke detector 1 or the flame detector 10. For example, an alarm signal receiving means for receiving a fire alarm signal from the receiver 19 by wire or wirelessly, a communication means for outputting a wireless signal for operating the smoke detector 1 or the flame detector 10, and the alarm signal receiving means You may provide the wireless relay apparatus which has a control means to operate the smoke detector 1 and the flame detector 10 via the said communication means based on the received fire alarm signal. At this time, the smoke detector 1 and the flame detector 10 use the transmission / reception means 18 as a communication means for wirelessly communicating with the communication means of the wireless relay device, and include a battery power source (not shown). As described above, the smoke detector 1 and the flame detector 10 are wireless, and the automatic fire alarm system including the fire detection means such as the smoke detector 1 and the flame detector 10 and the receiver 19 is wirelessly transmitted by the wireless repeater. By connecting, the smoke detector 1 and the flame detector 10 can be easily installed. For example, when the smoke detector 1 or the flame detector 10 is newly provided in an existing building, there is an effect that renewal work can be performed without newly performing electric circuit work. In addition, changing the installation location of the smoke detector 1 and the flame detector 10 by remodeling, refurbishing, changing partitions, etc. has the effect of greatly increasing the degree of freedom because there is no restriction due to the electric circuit.

上記実施例の火災感知器としての煙感知器1や炎感知器10等は、火災感知時に受信機19へ火災感知信号を送り、この火災感知信号を受信して火災と判断した受信機19が火災警報信号を煙感知器1や炎感知器10等に出力する自動火災報知設備の火災感知器として説明した。しかしながら、本発明は自動火災報知設備の火災感知器のみに限定して適用されるものではなく、火災感知部と、警報ブザーや音声メッセージ発生手段といった音響警報手段とを備え、受信機と共に用いずに単独動作可能な、住宅用の火災警報器にも適用することができる。また、1台の住宅用の火災警報器が火災を感知した際に、無線通信によって他の1台又は複数台の火災警報器を連動して動作させ、火災警報してもよい。このとき、従来の音響による警報に加えて、上記実施例に示した光警報部を連動して動作させるようにすることができる。さらに光警報部のフラッシュ発光を同期させることもできる。また、上述した無線式の火災感知器や住宅用の火災警報器の電源として、電池電源を用いるようにしてもよい。   The smoke detector 1, the flame detector 10, and the like as the fire detectors of the above embodiment send a fire detection signal to the receiver 19 when a fire is detected, and the receiver 19 that receives the fire detection signal and determines that a fire has occurred. It has been described as a fire detector of an automatic fire alarm facility that outputs a fire alarm signal to the smoke detector 1, the flame detector 10, or the like. However, the present invention is not applied only to the fire detector of the automatic fire alarm system, but includes a fire detector and an acoustic alarm means such as an alarm buzzer and a voice message generating means, and is not used with a receiver. It can also be applied to residential fire alarms that can operate independently. Further, when a fire alarm for one house senses a fire, another one or a plurality of fire alarms may be operated in conjunction with each other by wireless communication to give a fire alarm. At this time, in addition to the conventional alarm by sound, the light alarm unit shown in the above embodiment can be operated in conjunction. Furthermore, the flash emission of the light alarm unit can be synchronized. Further, a battery power source may be used as the power source of the above-described wireless fire detector or residential fire alarm.

1 煙感知器、2 高輝度白色LED、3 感知器ヘッド、4 煙流入窓、5 天板、6 フィン、7 確認灯、8 ベース、9 高輝度白色LEDランプ、10 炎感知器、11 制御手段、111 検出制御部、112 光警報制御部、12 検出発光素子、13 検出受光素子、14 発光駆動手段、15 増幅器、16 A/Dコンバータ、17 順次発光回路、18 送受信手段、19 受信機、20 受光素子、21 感知器カバー、101 光警報装置、101a 発光手段、101b ブザー、102 受信機、103 煙感知器 DESCRIPTION OF SYMBOLS 1 Smoke detector, 2 high brightness white LED, 3 sensor head, 4 smoke inflow window, 5 top plate, 6 fin, 7 confirmation lamp, 8 base, 9 high brightness white LED lamp, 10 flame detector, 11 control means , 111 detection control unit, 112 light alarm control unit, 12 detection light emitting element, 13 detection light receiving element, 14 light emission drive means, 15 amplifier, 16 A / D converter, 17 sequential light emission circuit, 18 transmission / reception means, 19 receiver, 20 Light receiving element, 21 Sensor cover, 101 Light alarm device, 101a Light emitting means, 101b Buzzer, 102 Receiver, 103 Smoke detector

Claims (6)

火災に起因する現象を光学的に検出する検出手段を備え、該検出手段の検出結果に基づいて火災を感知する火災感知部と、
発光手段と該発光手段を発光させる発光駆動手段とを備えた光警報部と、
を具備する火災感知器又は火災警報器において、
前記火災感知部は、前記現象の検出を行う検出期間と、前記現象の検出を行わない非検出期間とを有し、
火災発生時に、前記非検出期間に前記発光手段を間欠的にフラッシュ発光させると共に、前記検出期間には前記フラッシュ発光をさせないように前記発光駆動手段を制御する制御手段を備える火災感知器又は火災警報器。
A fire detecting unit that optically detects a phenomenon caused by a fire, and that detects a fire based on a detection result of the detection means;
A light alarm unit comprising a light emitting means and a light emission driving means for causing the light emitting means to emit light;
In a fire detector or fire alarm with
The fire sensing unit has a detection period for detecting the phenomenon and a non-detection period for not detecting the phenomenon,
A fire detector or fire alarm comprising control means for controlling the light emission driving means so that the light emission means is intermittently flashed during the non-detection period and the flash light emission is not caused during the detection period when a fire occurs. vessel.
前記検出手段は、火災に起因する煙、炎、熱、ガスの少なくとも何れか1つ以上を検出する、
請求項1の火災感知器又は火災警報器。
The detection means detects at least one of smoke, flame, heat, gas caused by a fire,
The fire detector or fire alarm according to claim 1.
前記発光手段は、外周部にリング状に配置される、
請求項1又は2の火災感知器又は火災警報器。
The light emitting means is arranged in a ring shape on the outer periphery,
The fire detector or fire alarm according to claim 1 or 2.
前記発光手段は、回転するように順次発光する、
請求項3の火災感知器又は火災警報器。
The light emitting means sequentially emits light so as to rotate.
The fire detector or fire alarm according to claim 3.
前記発光手段は、天板に1以上配置される、
請求項1又は2の火災感知器又は火災警報器。
One or more of the light emitting means are disposed on the top plate,
The fire detector or fire alarm according to claim 1 or 2.
前記発光手段は、真横方向への放射を抑制するように調整された配光である、
請求項1乃至5の何れか1項の火災感知器又は火災警報器。
The light emitting means is a light distribution adjusted to suppress radiation in a lateral direction.
The fire detector or fire alarm according to any one of claims 1 to 5.
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