JP5126765B2 - Fire detection unit - Google Patents

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JP5126765B2
JP5126765B2 JP2006222204A JP2006222204A JP5126765B2 JP 5126765 B2 JP5126765 B2 JP 5126765B2 JP 2006222204 A JP2006222204 A JP 2006222204A JP 2006222204 A JP2006222204 A JP 2006222204A JP 5126765 B2 JP5126765 B2 JP 5126765B2
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茂 相原
真 椿
武 鎌田
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Tempearl Industrial Co Ltd
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この発明は、火災の発生を検出し外部に火災検出信号を送出する火災検出ユニットに係り、特に、該火災検出ユニットの駆動電源として熱電変換素子を利用した火災検出ユニットに関するものである。 The present invention relates to a fire detection unit that detects the occurrence of a fire and sends a fire detection signal to the outside, and more particularly to a fire detection unit that uses a thermoelectric conversion element as a drive power source for the fire detection unit.

従来，一般に火災を検出し周囲に警報を発する住宅用火災警報器はその駆動電源として，商用電源や電池を使用している。特に駆動電源として電池を用いる場合、電池はその電圧が時間の経過とともに低下するので、住宅用火災警報器に電圧低下の警報回路を設けていた。 Conventionally, a residential fire alarm that generally detects a fire and issues an alarm to the surrounding area uses a commercial power source or a battery as a driving power source. In particular, when a battery is used as a driving power source, the voltage of the battery decreases with time, so a fire alarm for a house is provided with a voltage drop alarm circuit.

例えば特許文献１では、熱、炎、煙により火災が発生したことを感知し、電気信号を出力する火災検出回路と、該火災検出回路から出力された電気信号が所定の基準値以上のときに警報信号を出力する火災判断回路と、該火災判断回路からの警報信号を受けて警報駆動信号を出力する警報器駆動回路と、該警報器駆動回路からの警報駆動信号により駆動される警報器と、火災検出回路、火災判断回路、警報器駆動回路及び警報器を駆動させるための電池電源と、電池電源の電圧を検出し、検出値が所定値以下のときにのみ電池電源の電圧を出力する電圧監視回路及び電圧監視回路が出力する電池電源の電圧に基づき周期的に警報信号を発生させて警報器駆動回路に出力する警報信号発振回路からなる電圧低下警報回路とを備えて構成されている。 For example, in Patent Document 1, a fire detection circuit that senses that a fire has occurred due to heat, flame, or smoke and outputs an electrical signal; A fire determination circuit for outputting an alarm signal, an alarm device driving circuit for receiving an alarm signal from the fire determination circuit and outputting an alarm driving signal, and an alarm device driven by the alarm driving signal from the alarm device driving circuit; , Fire detection circuit, fire judgment circuit, alarm drive circuit and battery power to drive the alarm and the voltage of the battery power supply are detected and the voltage of the battery power is output only when the detected value is below the predetermined value And a voltage drop alarm circuit comprising an alarm signal oscillation circuit that periodically generates an alarm signal based on the voltage of the battery power output from the voltage monitoring circuit and outputs the alarm signal to the alarm device driving circuit. .

特開平９−５４８８５号 図１Japanese Patent Laid-Open No. 9-54885 FIG.

住宅内に、火災を検出し周囲に警報を発する住宅用火災警報器を設置する場合、一般的に前記住宅用火災警報器は天井や壁の上方に取り付けられることが多い。該住宅用火災警報器の駆動電源として電池を用いた住宅用火災警報器においては、該住宅用火災警報器に設けられた電圧低下警報回路の駆動により電圧低下の警報が発生した場合には、該住宅用火災警報器に設けられている電池の交換が必要となるが、前記住宅用火災警報器は天井や壁の上方に取り付けられるため、前記電池を交換する場合、その交換作業は容易ではなかった。特に、高齢者にとっては電池交換に際して、脚立などの踏み台に上って行う作業は転倒するおそれがあるなど、危険が伴うという課題があった。 When installing a fire alarm for a house that detects a fire and issues an alarm around the house, the fire alarm for the house is generally mounted above a ceiling or a wall in many cases. In a residential fire alarm using a battery as a driving power source for the residential fire alarm, when a voltage drop alarm is generated by driving a voltage drop alarm circuit provided in the residential fire alarm, It is necessary to replace the battery provided in the residential fire alarm. However, since the residential fire alarm is mounted above the ceiling or wall, when replacing the battery, the replacement work is not easy. There wasn't. In particular, when the battery is replaced, there is a problem that the work performed on a stepping platform such as a stepladder may be overturned when the battery is replaced.

また、商用電源により駆動する住宅用火災警報器を設置するにあたっては、設置場所に電源線の敷設が必要となり、該電源線の敷設にかかるコストが大きく気軽には住宅用火災警報器を設置できないという課題や、特に建物の新築時ではなく後付により住宅用火災警報器を設置する場合には、設置そのものが困難であるという課題があった。 In addition, when installing a residential fire alarm driven by a commercial power source, it is necessary to lay a power line at the installation location, and the cost of laying the power line is large and it is not possible to install a residential fire alarm easily. In particular, when installing a residential fire alarm by retrofitting rather than when building a new building, there was a problem that the installation itself was difficult.

さらに、周囲に警報を発する警報部が前記住宅用火災警報器に一体に設けられている場合、該住宅用火災警報器を設置した付近に居住者がいない場合には、警報が発せられても気がつかないおそれがあるという課題があった。 Further, when an alarm unit that issues an alarm around is provided integrally with the residential fire alarm, if there is no resident in the vicinity of the residential fire alarm installed, an alarm may be issued There was a problem that there was a risk of not being aware.

そこで本件の発明の目的とするところは，電源線の敷設を不要として容易に取付けが行えるとともに、一旦取付けを行った後は電池交換作業を不要とでき、さらには警報出力を外部に信号出力することにより警報が発せられたことを警報ユニット付近以外にも出力が可能で確実に火災の発生を居住者に知らせることが可能な、居住者にとって非常に使い勝手がよい火災警報ユニットを提供することを目的としている。 Therefore, the object of the present invention is that it can be easily installed without the need for laying a power supply line, and once it has been installed, it is not necessary to replace the battery. Furthermore, an alarm output is output to the outside. To provide a fire alarm unit that is very easy to use for residents, which can output that other than the vicinity of the alarm unit and can surely inform the residents of the occurrence of a fire. It is aimed.

上述の目的を達成するために，本発明の請求項１では，周囲の温度を検出し該検出した温度に応じた信号を出力する温度センサーと、該温度センサーの出力信号に基づいて火災の発生を判定するとともに前記火災が発生したと判定した場合には該火災が発生したことを示す出力信号を出力する火災判定処理部と、該火災判定処理部から出力された出力信号を外部に無線送受信する無線通信部を備えた警報信号出力部と、少なくとも前記火災判定処理部に電源を供給する熱電変換素子とを備えた火災検出ユニットを、該火災検出ユニットの器体外観が略円柱状に設けられるとともに、該略円柱状の器体における円周方向に沿って、前記警報信号出力部と接続されて警報信号を外部に伝播させるアンテナ部を備え、
前記無線通信部における無線通信距離の範囲内に設置された複数の火災検出ユニットのうち、火災を検出したいずれかの火災検出ユニットの無線通信部から出力される警報信号を近辺の火災検出ユニットに伝播させる無線通信部を備え設けられたことを特徴として提供したものである。
In order to achieve the above-mentioned object, according to claim 1 of the present invention, a temperature sensor that detects the ambient temperature and outputs a signal corresponding to the detected temperature, and the occurrence of a fire based on the output signal of the temperature sensor A fire determination processing unit that outputs an output signal indicating that the fire has occurred, and wirelessly transmits and receives the output signal output from the fire determination processing unit to the outside A fire detection unit including an alarm signal output unit including a wireless communication unit and a thermoelectric conversion element that supplies power to at least the fire determination processing unit, and the external appearance of the fire detection unit is provided in a substantially cylindrical shape And an antenna unit that is connected to the alarm signal output unit and propagates the alarm signal to the outside along the circumferential direction of the substantially cylindrical vessel body ,
Among a plurality of fire detection units installed within the range of the wireless communication distance in the wireless communication unit, an alarm signal output from the wireless communication unit of any fire detection unit that detects a fire is sent to a nearby fire detection unit It is provided as a feature that a wireless communication unit for propagation is provided.

これにより、火災により建物内の空気が熱せられ、住宅用火災警報器の周囲温度が上昇した場合には、前記熱電変換素子に起電力が発生し、前記火災判定処理部に電源が印加されることにより該火災判定処理部が駆動し、所定の火災発生条件を満たした場合には火災が発生していると判定し、警報信号を外部に向けて信号出力することが可能な火災警報ユニットを提供することができる。 As a result, when the air in the building is heated by the fire and the ambient temperature of the residential fire alarm rises, an electromotive force is generated in the thermoelectric conversion element, and power is applied to the fire determination processing unit. A fire alarm unit capable of driving the fire determination processing unit and determining that a fire has occurred when a predetermined fire occurrence condition is satisfied and outputting the alarm signal to the outside. Can be provided.

これにより、複数個の火災検出ユニットを互いの無線通信距離の範囲内に設置することにより、いずれかの火災検出ユニットにて火災を検出した場合には、出力する警報信号を近辺の火災検出ユニットを伝搬させて、より広い範囲に向けて信号伝搬を可能とし、居住者に警報を知らせる火災検出ユニットを提供することができる。

As a result, if a fire is detected by any of the fire detection units by installing a plurality of fire detection units within the range of the mutual wireless communication distance, an alarm signal to be output is sent to the nearby fire detection unit. It is possible to provide a fire detection unit that enables signal propagation over a wider area and notifies a resident of an alarm .

前記熱電変換素子の低温側に一端が接続されるとともに他端が住宅用火災警報器の取付け場所周辺の建材本体もしくは建材内側に設けられる熱移送手段もしくは／及び熱維持手段とを備えたことを特徴として構成してもよい。
Further comprising a heat transfer means or / and heat maintaining means and the other end is provided in the building material body or building materials inside the mounting location near residential fire alarm one end to the cold side connected to the thermoelectric conversion element It may be configured as a feature.

これにより、居室内の空気の温度変化に対して、より温度変化が少なく比熱の大きな建材本体もしくは建材内部や内側の空間に熱移送手段の一端を設けておくことにより熱電変換素子における高温側及び低温側における温度差をより得やすくすることができるとともに、効率的に熱の移送や熱の維持を行え、前記熱電変換素子に発生する起電力の大きさをより大きくでき、前記火災判定処理部の駆動電源を得やすくなるように火災警報ユニットを設けることができる。 Accordingly, by providing one end of the heat transfer means in the building material main body or the interior of the building material having a large specific heat with less temperature change with respect to the temperature change of the air in the living room, the high temperature side in the thermoelectric conversion element and The temperature difference on the low temperature side can be obtained more easily, heat can be transferred and maintained efficiently, the electromotive force generated in the thermoelectric conversion element can be increased, and the fire determination processing unit A fire alarm unit can be provided so that it is easy to obtain a drive power source.

本発明によれば住宅内に火災を検出し警報信号を出力する火災警報ユニットを設置するにあたり、電源線の敷設を不要として容易に取付けが行えるとともに、一旦取付けを行った後は電池交換作業を不要とでき、さらには警報出力を外部に信号出力することにより警報が発せられたことを警報ユニット付近以外にも出力が可能で確実に火災の発生を居住者に知らせることが可能な、居住者にとって非常に使い勝手がよい火災警報ユニットを提供することができる。 According to the present invention, when installing a fire alarm unit that detects a fire in a house and outputs an alarm signal, it can be easily installed without the need for laying a power line. Residents who can make it unnecessary and can also output the alarm output to outside the alarm unit and can notify the resident about the occurrence of a fire. Can provide a fire alarm unit that is very easy to use.

以下，本発明の実施の形態について，図面を用いて詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図１はこの発明の第一の実施例を示したブロック図である。 FIG. 1 is a block diagram showing a first embodiment of the present invention.

図１において、１は火災警報ユニット、２は温度センサー、３は火災判定処理部、４は警報信号出力部、５は熱電変換素子である。 In FIG. 1, 1 is a fire alarm unit, 2 is a temperature sensor, 3 is a fire determination processing unit, 4 is an alarm signal output unit, and 5 is a thermoelectric conversion element.

温度センサー２はサーミスタを用いて構成したものである。該温度センサー２は、周囲の温度に応じて抵抗値が変化するため、後述する火災判定処理部にて、該抵抗値を周囲温度に応じた信号として検出することにより周囲温度を求出することができる。前記温度センサー２として、サーミスタの他、温度変化に伴い電圧信号が変化する熱電対や、半導体を用いた温度センサーなどを用いて構成してもよい。 The temperature sensor 2 is configured using a thermistor. Since the resistance value of the temperature sensor 2 changes depending on the ambient temperature, the fire determination processing unit described later obtains the ambient temperature by detecting the resistance value as a signal corresponding to the ambient temperature. Can do. In addition to the thermistor, the temperature sensor 2 may be configured using a thermocouple in which a voltage signal changes with a temperature change, a temperature sensor using a semiconductor, or the like.

火災判定処理部３は、前記温度センサー２からの出力を受けて周囲温度を演算により求出し、所定の温度に達した場合には、火災が発生したと判定する処理部である。また、該火災判定処理部３により火災が発生したと判定された場合には、後述する警報信号出力部４に向けて警報信号を出力する。 The fire determination processing unit 3 is a processing unit that receives an output from the temperature sensor 2 and calculates an ambient temperature by calculation, and determines that a fire has occurred when the temperature reaches a predetermined temperature. When the fire determination processing unit 3 determines that a fire has occurred, an alarm signal is output to an alarm signal output unit 4 described later.

警報信号出力部４は、前記火災判定処理部３から送出された警報信号を外部に出力する出力部である。該警報信号はデジタル信号であり、該デジタル信号を外部に伝送する。 The alarm signal output unit 4 is an output unit that outputs the alarm signal sent from the fire determination processing unit 3 to the outside. The alarm signal is a digital signal, and the digital signal is transmitted to the outside.

具体的には、ＲＦ回路（無線送信回路）が該警報信号出力部４に設けられており、前記火災判定処理部３から出力された警報信号は無線で外部に送出される。本実施例では無線方式としてＩＥＥＥにより定められた、ＩＥＥＥ８０２．１５．４を物理インターフェースに用いた短距離無線通信規格に基づいた構成としている。該ＩＥＥＥ８０２．１５．４により定められた無線通信規格は低消費電力であるため、本発明のように後述する熱電変換素子を駆動電源とする場合に適している。 Specifically, an RF circuit (wireless transmission circuit) is provided in the alarm signal output unit 4, and the alarm signal output from the fire determination processing unit 3 is transmitted to the outside wirelessly. In the present embodiment, the wireless communication system is configured based on the short-range wireless communication standard using IEEE 802.15.4 as a physical interface, which is defined by IEEE. Since the wireless communication standard defined by IEEE 802.15.4 has low power consumption, it is suitable when a thermoelectric conversion element (to be described later) is used as a drive power source as in the present invention.

また、前記無線方式の他、通信距離が必要な場合には特定小電力方式の無線通信方式を用いたり、駆動電源を別途用意できるような場合には、微弱電波方式の無線通信方式や、Ｂｌｕｅｔｏｏｔｈ（登録商標）方式の無線通信方式を用いて前記警報信号出力部４を構成してもよい。 In addition to the wireless method described above, when a communication distance is required, a specific low power wireless communication method is used, or when a drive power source can be prepared separately, a weak radio wave wireless communication method, Bluetooth, The alarm signal output unit 4 may be configured using a (registered trademark) wireless communication system.

なお、無線通信以外に、有線方式で警報信号を引出したい場合には、信号線を接続する信号線接続端子を該警報信号出力部４に設けて、該警報信号を出力させたい場所まで信号線を敷設するように構成してもよい。この場合には信号線を敷設することとなるが、商用電源線を敷設する場合と比較すると該信号線の敷設は容易に行うことができる。 In addition to wireless communication, when it is desired to draw out an alarm signal by a wired system, a signal line connection terminal for connecting a signal line is provided in the alarm signal output unit 4, and the signal line is connected to a place where the alarm signal is to be output. May be constructed. In this case, a signal line is laid, but the signal line can be easily laid as compared with a case where a commercial power line is laid.

前記警報信号を受信する側の機器については、前記デジタル信号を受信して周囲に火災が発生したことを報知するような報知部を設けた機器を用いるとよい。例えば、信号を受けた場合にブザーが鳴る機器を用いてもよいし、スピーカを用いて構成し音声処理回路を設けて音声にて火災が発生したことを周囲に向けて報知するように構成してもよいし、ＬＥＤやＥＬパネルを用いて発光させることにより火災が発生したことを周囲に向けて報知するように構成してもよい。 As a device that receives the alarm signal, a device provided with a notification unit that receives the digital signal and notifies that a fire has occurred around the digital signal may be used. For example, a device that sounds a buzzer when a signal is received may be used, or a speaker is used and a voice processing circuit is provided to notify the surroundings that a fire has occurred by voice. Alternatively, it may be configured to notify the surroundings that a fire has occurred by emitting light using an LED or EL panel.

これらの警報信号を受信する側の機器を住居内において居住者が居る可能性が高い場所に設置しておくことで、前記火災警報ユニットが火災を検出した場合に発する警報信号を該火災警報ユニットを設置している場所に居住者が居なくとも確実に知らせることが可能である。 By installing the device on the side that receives these alarm signals in a place where there is a high possibility that a resident is present in the dwelling, the alarm signal generated when the fire alarm unit detects a fire is generated. Even if there is no resident in the place where is installed, it is possible to reliably notify.

次に、熱電変換素子５は、該熱電変換素子５の一側面及び他側面に温度差が生ずる場合、ゼーベック効果により発電する素子であり、二種類の導体または半導体を接続した構造としている。該熱電変換素子５で生ずる起電力は、前記火災判定処理部３に供給されるように接続している。なお、前記報知部４の消費電力と前記火災判定処理部３の消費電力の和よりも、前記熱電変換素子５で生ずる起電力のほうが大きい場合には、該報知部の駆動電源として用いてもよい。 Next, the thermoelectric conversion element 5 is an element that generates power by the Seebeck effect when a temperature difference occurs between one side surface and the other side surface of the thermoelectric conversion element 5, and has a structure in which two types of conductors or semiconductors are connected. The electromotive force generated in the thermoelectric conversion element 5 is connected to be supplied to the fire determination processing unit 3. In addition, when the electromotive force generated in the thermoelectric conversion element 5 is larger than the sum of the power consumption of the notification unit 4 and the power consumption of the fire determination processing unit 3, it may be used as a drive power source for the notification unit. Good.

次に本発明の第二の実施例について説明を行う。 Next, a second embodiment of the present invention will be described.

図２は、本発明の火災警報ユニット１を居室内の天井面に取り付けた外観図を示したものである。該火災警報ユニット１の外観は略円柱状をしており、その中央付近には温度センサー２と、熱電変換素子５とが設けられ、器体外面には前記警報信号出力部に接続され、前記警報信号を外部に伝搬させるアンテナ部７が設けられてている。 FIG. 2 shows an external view of the fire alarm unit 1 of the present invention attached to the ceiling surface of a living room. The external appearance of the fire alarm unit 1 has a substantially cylindrical shape, a temperature sensor 2 and a thermoelectric conversion element 5 are provided in the vicinity of the center of the fire alarm unit 1, and the alarm signal output unit is connected to the outer surface of the body. An antenna unit 7 for propagating the alarm signal to the outside is provided.

該熱電変換素子は、その一側面（高温側）が居室内の空気に接するように住宅用火災警報器１の外面に露出しており、他側面側（低温側）は居室内の空気に接しないように、住宅用火災警報器１の器体内側方向に位置するように設けられている。 The thermoelectric conversion element is exposed on the outer surface of the residential fire alarm 1 so that one side surface (high temperature side) is in contact with the air in the room, and the other side surface (low temperature side) is in contact with the air in the room. It is provided so that it may be located in the container inner side direction of the fire alarm 1 for houses so that it may not.

このように設けることにより、前記熱電変換素子の一側面と他側面において、該一側面は居室内の空気に接することで該居室内の温度変化に応じて温度変化を敏感にとらえ、該他側面は居室内の空気に接しないことで前記居室内の温度変化には鈍感となることにより、火災発生時における熱電変換素子の両側面において温度差を得やすくなり、前記熱電変換素子に発生する起電力の大きさをより大きくでき、前記火災判定処理部の駆動電源を得やすく設けることができる。 By providing in this way, in the one side and the other side of the thermoelectric conversion element, the one side is in contact with the air in the room, so that the temperature change is sensitive to the temperature change in the room, and the other side Is insensitive to the temperature change in the room by not being in contact with the air in the room, thereby making it easier to obtain a temperature difference on both side surfaces of the thermoelectric conversion element in the event of a fire and causing the occurrence in the thermoelectric conversion element. The magnitude of electric power can be further increased, and a drive power source for the fire determination processing unit can be easily provided.

なお、前記熱電変換素子の配置については、本実施例においては住宅用火災警報器１の器体の下面中央部に配設したが、この他、住宅用火災警報器１の器体側面に複数の熱電変換素子を並設し、各々の出力端を接続し、発生する起電力を増加できるように設けてもよい。 In addition, about the arrangement | positioning of the said thermoelectric conversion element, although arrange | positioned in the lower surface center part of the housing | casing of the fire alarm 1 for houses in this Example, in addition to this, there are several on the side of the body of the fire alarm 1 for houses. These thermoelectric conversion elements may be arranged in parallel, and the output terminals of the thermoelectric conversion elements may be connected so that the generated electromotive force can be increased.

次に、該火災検出ユニット１の作動について説明する。 Next, the operation of the fire detection unit 1 will be described.

火災が発生した場合、火災発生源の周囲の空気が加熱され上昇気流が生じる。前記住宅用火災警報ユニット１の下面に配設された熱電変換素子５の高温側は、前記加熱された空気によって加熱され温度が上昇する。これに対して、熱電変換素子の低温側は前記火災警報ユニット１の内側方向に向けて配設されているため周囲の空気の温度上昇に対しては鈍感であり、前記熱電変換素子５の高温側と低温側において温度差が生ずる。この温度差により熱電変換素子が発電し、前記火災警報ユニット１の火災判定処理部３に電源を供給を開始する。 When a fire breaks out, the air around the fire source is heated and an updraft is generated. The high temperature side of the thermoelectric conversion element 5 disposed on the lower surface of the residential fire alarm unit 1 is heated by the heated air and the temperature rises. On the other hand, since the low temperature side of the thermoelectric conversion element is arranged toward the inner side of the fire alarm unit 1, it is insensitive to the temperature rise of the surrounding air, and the high temperature of the thermoelectric conversion element 5 is high. A temperature difference occurs between the low temperature side and the low temperature side. The thermoelectric conversion element generates electric power due to this temperature difference, and starts supplying power to the fire determination processing unit 3 of the fire alarm unit 1.

電源供給が開始された火災判定処理部３は、温度センサー２の抵抗値の測定を開始し、該抵抗値を検出することにより周囲温度を求出し、所定の温度に達した場合には、火災が発生したと判定する。 The fire determination processing unit 3 that has started supplying power starts measurement of the resistance value of the temperature sensor 2, obtains the ambient temperature by detecting the resistance value, and fires when the predetermined temperature is reached. Is determined to have occurred.

火災が発生したと判定した場合には、前記警報信号出力部４に対して警報信号を出力し、該警報信号出力部４は前記処理部からの警報信号を外部に無線送信する。 When it is determined that a fire has occurred, an alarm signal is output to the alarm signal output unit 4, and the alarm signal output unit 4 wirelessly transmits an alarm signal from the processing unit to the outside.

そして、警報信号を受信した機器は、周囲に対して火災の発生を報知することにより居住者は火災の発生を知ることができる。 And the apparatus which received the warning signal notifies the generation | occurrence | production of a fire with respect to the circumference | surroundings, and the resident can know generation | occurrence | production of a fire.

次に本発明の第三の実施例について説明を行う。 Next, a third embodiment of the present invention will be described.

図３には、本発明の火災警報ユニット１を居室内の天井面に取り付けた外観図を示したものである。第二の実施例で示した火災警報ユニットにおいて、熱電変換素子５の低温側に一端が接続されるとともに他端が該火災警報ユニット１が取付けられている天井面の建材本体に設けられた熱移送手段を備えたことを特徴として構成されている。本実施例においては前記熱移送手段としてヒートパイプを用いて構成している。 In FIG. 3, the external view which attached the fire alarm unit 1 of this invention to the ceiling surface in the living room is shown. In the fire alarm unit shown in the second embodiment, one end is connected to the low temperature side of the thermoelectric conversion element 5 and the other end is heat provided on the building material body on the ceiling surface to which the fire alarm unit 1 is attached. It is characterized by having a transfer means. In the present embodiment, a heat pipe is used as the heat transfer means.

ヒートパイプは金属管で構成され、該金属管内部に中空の筒が内装され、常温付近の温度で液化または気化する熱媒を封入している。小さな温度差でも多量の熱を移送できるため前記熱電変換素子の起電力発生のために都合がよい。 The heat pipe is composed of a metal tube, and a hollow cylinder is provided inside the metal tube and encloses a heat medium that liquefies or vaporizes at a temperature near room temperature. Since a large amount of heat can be transferred even with a small temperature difference, it is convenient for generating an electromotive force of the thermoelectric conversion element.

火災発生時における居室内の加熱された空気の温度と、天井面を形成している建材の温度もしくは天井内部の空気温度との間には温度差が生じやすく、該温度差を効率よく前記熱電変換素子に伝送することにより、該熱電変換素子の起電力をより得ることができる。 A temperature difference is likely to occur between the temperature of the heated air in the living room at the time of the fire and the temperature of the building material forming the ceiling surface or the temperature of the air inside the ceiling. By transmitting to the conversion element, the electromotive force of the thermoelectric conversion element can be obtained more.

また、前記熱移送手段に代えて、例えば蓄熱材や保温材などの熱維持手段を用いたり、熱の移送及び維持効果を高めるために、前記熱移送手段及び前記熱維持手段を用いて構成してもよい。 Further, instead of the heat transfer means, for example, a heat maintenance means such as a heat storage material or a heat insulation material is used, or in order to enhance the heat transfer and maintenance effect, the heat transfer means and the heat maintenance means are used. May be.

なお、本発明は、開示した実施例に限定されることなく、発明の要旨を逸脱しない限りにおいて、適宜、必要に応じて、改良や設計変更は自由であり、例えば、火災警報ユニットの器体形状は略円柱形状の他、多角形状として熱電変換素子を多数並設し易く構成してもよいし、火災を検出するセンサーを温度センサーの他に煙を検出する煙センサーを設けて構成し、火災の発生をより確実に行うことができるように構成してもよい。 It should be noted that the present invention is not limited to the disclosed embodiments, and can be freely modified and changed as necessary without departing from the gist of the invention. For example, the body of a fire alarm unit In addition to the substantially cylindrical shape, the shape may be a polygonal shape that makes it easy to arrange many thermoelectric conversion elements in parallel, or a fire detection sensor is provided with a smoke sensor that detects smoke in addition to a temperature sensor, You may comprise so that generation | occurrence | production of a fire can be performed more reliably.

また、本発明の火災検出ユニットにおける警報信号出力部の無線通信部を送受信可能に構成して、複数個の火災検出ユニットを互いの無線通信距離の範囲内に設置し、いずれかの火災検出ユニットにて火災を検出した場合には、出力する警報信号を近辺の火災検出ユニットを伝搬させることにより、より広い範囲に向けて信号伝搬を可能とし、居住者に警報を知らせるように構成してもよい。 Further, the wireless communication unit of the alarm signal output unit in the fire detection unit of the present invention is configured to be able to transmit and receive, and a plurality of fire detection units are installed within the range of the mutual wireless communication distance, and any one of the fire detection units If a fire is detected at, the alarm signal to be output is propagated to the nearby fire detection unit, so that the signal can be propagated to a wider range, and the resident is notified of the alarm. Good.

また、出力される警報信号をブロードキャスト方式とし、特定の警報受信機器のみならず、複数台の警報受信機器に対して警報信号を受信可能としておくことにより、電波が届く範囲であれば、より広範囲で警報を受信することができ、居住者の住宅内の位置にかかわらず警報を認識することが可能となる。 In addition, the alarm signal to be output is a broadcast method, and it is possible to receive the alarm signal not only for a specific alarm receiving device but also for a plurality of alarm receiving devices. The alarm can be received by the user, and the alarm can be recognized regardless of the position of the resident in the house.

本発明における火災警報ユニットは、その施工に際して新たな配線の敷設や、一旦取り付けた後は電池の取替えが不要であり、さらには、警報出力を外部に信号出力することにより警報が発せられたことを警報ユニット付近以外にも出力が可能であるため、省施工及びメンテナンス性に優れた住宅用火災警報器として使用でき、新築住宅への取付けはもちろんのこと、既築住宅への取付けも容易に行うことができ、居住者にとって非常に使い勝手がよい火災警報ユニットとして利用できる。 The fire alarm unit according to the present invention does not require the installation of new wiring or replacement of the battery once it is installed, and the alarm was issued by outputting the alarm output to the outside. Can be used outside of the alarm unit, so it can be used as a fire alarm for homes with excellent construction and maintainability, and can be easily installed not only in new homes but also in existing homes. It can be used and can be used as a fire alarm unit which is very convenient for residents.

第一の実施例の火災検出ユニットのブロック図である。It is a block diagram of the fire detection unit of a 1st Example. 火災検出ユニットを取付けた外観図である。It is an external view which attached the fire detection unit. 火災検出ユニットを取付けた概略側面図である。It is the schematic side view which attached the fire detection unit. 従来の住宅用火災警報器を示した図である。It is the figure which showed the conventional fire alarm for houses.

符号の説明Explanation of symbols

１ 火災検出ユニット
２ 温度センサー
３ 火災判定処理部
４ 警報信号出力部
５ 熱電変換素子
６ ヒートパイプ
７ アンテナ部
DESCRIPTION OF SYMBOLS 1 Fire detection unit 2 Temperature sensor 3 Fire judgment processing part 4 Alarm signal output part 5 Thermoelectric conversion element 6 Heat pipe 7 Antenna part

Claims (2)

周囲の温度を検出し該検出した温度に応じた信号を出力する温度センサーと、該温度センサーの出力信号に基づいて火災の発生を判定するとともに前記火災が発生したと判定した場合には該火災が発生したことを示す出力信号を出力する火災判定処理部と、該火災判定処理部から出力された出力信号を外部に無線送受信する無線通信部を備えた警報信号出力部と、少なくとも前記火災判定処理部に電源を供給する熱電変換素子とを備えた火災検出ユニットであって、
該火災検出ユニットの器体外観が略円柱状に設けられるとともに、
該略円柱状の器体における円周方向に沿って、前記警報信号出力部と接続されて警報信号を外部に伝播させるアンテナ部を備え、
前記無線通信部における無線通信距離の範囲内に設置された複数の火災検出ユニットのうち、火災を検出したいずれかの火災検出ユニットの無線通信部から出力される警報信号を近辺の火災検出ユニットに伝播させる無線通信部を備えたことを特徴とする火災検出ユニット。 A temperature sensor that detects an ambient temperature and outputs a signal corresponding to the detected temperature; determines the occurrence of a fire based on the output signal of the temperature sensor; A fire determination processing unit that outputs an output signal indicating that a fire has occurred, an alarm signal output unit including a wireless communication unit that wirelessly transmits and receives the output signal output from the fire determination processing unit, and at least the fire determination A fire detection unit comprising a thermoelectric conversion element that supplies power to the processing unit,
The outer appearance of the fire detection unit is provided in a substantially cylindrical shape,
Along the circumferential direction in the substantially cylindrical container, comprising an antenna unit connected to the alarm signal output unit to propagate the alarm signal to the outside ,
Among a plurality of fire detection units installed within the range of the wireless communication distance in the wireless communication unit, an alarm signal output from the wireless communication unit of any fire detection unit that detects a fire is sent to a nearby fire detection unit A fire detection unit comprising a wireless communication unit for propagation . 前記熱電変換素子の低温側に一端が接続されるとともに他端が住宅用火災警報器の取付け場所周辺の建材本体もしくは建材内側に設けられる熱移送手段もしくは／及び熱維持手段とを備えたことを特徴とする請求項１記載の火災検出ユニット。
Further comprising a heat transfer means or / and heat maintaining means and the other end is provided in the building material body or building materials inside the mounting location near residential fire alarm one end to the cold side connected to the thermoelectric conversion element The fire detection unit according to claim 1, wherein
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