WO2022025300A1 - Closed-space monitoring space - Google Patents

Closed-space monitoring space Download PDF

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Publication number
WO2022025300A1
WO2022025300A1 PCT/JP2021/033322 JP2021033322W WO2022025300A1 WO 2022025300 A1 WO2022025300 A1 WO 2022025300A1 JP 2021033322 W JP2021033322 W JP 2021033322W WO 2022025300 A1 WO2022025300 A1 WO 2022025300A1
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Prior art keywords
closed space
duct
main body
monitoring device
space monitoring
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PCT/JP2021/033322
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French (fr)
Japanese (ja)
Inventor
俊行 田賀
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株式会社アガタ
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Publication of WO2022025300A1 publication Critical patent/WO2022025300A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/15—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre with parallel simultaneously tiltable lamellae

Definitions

  • the present invention relates to a closed space monitoring device for confirming an image in a closed space from a distant place.
  • Patent Document 1 It is obligatory to install a fire prevention damper as shown in Patent Document 1 in the air conditioning duct that supplies and exhausts air, which is an air conditioning equipment.
  • This fire damper has a structure that automatically closes the flow path by high-temperature smoke or the like generated in the air conditioning duct.
  • the heat-sensitive fusing member is melted by the heat at the time of a fire to release the urging force, and a plurality of blades arranged in the horizontal direction rotate in the vertical direction. And close the flow path.
  • This regular inspection should be visually inspected from inside the duct to prevent the fire damper from malfunctioning in the event of a fire due to the adhesion of dust or oil to the heat-fusing member or the failure of the blades. be.
  • An object of the present invention is to solve the above-mentioned problems and to provide a closed space monitoring device capable of confirming the status of equipment installed in a closed space from a distant place.
  • the closed space monitoring device for achieving the above object has a fixed portion fixed to an insertion hole provided in a side surface portion forming the closed space, and a columnar column freely rotatably supported in the fixed portion.
  • a closed space monitoring device composed of a main body portion of the above, wherein the imaging direction is a direction orthogonal to the longitudinal direction of the main body portion at the tip end portion of the main body portion protruding into the closed space. Is arranged, and a communication unit for transmitting video information photographed by the photographing unit is arranged at the rear end portion of the main body portion arranged outside the closed space.
  • the closed space monitoring device it is possible to check the state of equipment installed in a closed space from a distant place without stopping air conditioning or the like for a closed space such as a duct. ..
  • FIG. 1 is a system configuration diagram in which the closed space monitoring device of this embodiment is installed in the duct D
  • FIG. 2 is a perspective view in a state where the closed space monitoring device is installed in the duct D
  • FIG. 3 is a closed space monitoring device. It is a block diagram of.
  • the duct D in which the closed space monitoring device 1 is installed is for supplying and exhausting air, for example, installed in a factory or the like, and the duct for exhausting exhausts air containing oil, dust, etc. to the outside. Further, it may be a smoke exhaust duct for exhausting the smoke exhaust generated by cooking in the kitchen to the outside.
  • the duct D has an appropriate cross-sectional shape such as a rectangle or a circle, and the above-mentioned fire damper corresponding to this cross-sectional shape is arranged for each section.
  • the blade portion B1 of the fire prevention damper B is arranged so as to be parallel to the airflow direction A in which an airflow is normally generated.
  • the closed space monitoring device 1 is installed on the side surface of the duct D in the vicinity of the fire prevention damper B to be monitored and on the upstream side of the air flow generated in the duct D.
  • the closed space monitoring device 1 has a fixed portion 2 fixed to an insertion hole S provided in a side surface portion forming a closed space such as a duct D, and a columnar columnar freely supported in the fixed portion 2. It is composed of a main body portion 3.
  • the fixing portion 2 is made of a metal or a heat-resistant hard resin material, and is composed of a cylindrical portion 2a to be inserted into the insertion hole S of the duct D and a flange portion 2b provided at the bottom of the cylindrical portion 2a and fixed to the outside of the duct D. It is configured.
  • the outer diameter of the cylindrical portion 2a is about 16 mm, which is smaller than the diameter of the insertion hole S, and the size of the cylindrical portion 2a is about 12 cm in height and about 2 mm in thickness.
  • the size of the flange portion 2b is, for example, about 7 cm in length and width, and the thickness is about 2 mm.
  • the main body 3 is made of metal or a heat-resistant hard resin material, and has a columnar height of, for example, about 17 cm.
  • the height of the main body 3 is slightly longer than half the diameter of the cross section of the duct D, and the main body 3 having a height corresponding to the diameter of the duct D is appropriately selected.
  • the main body 3 With the main body 3 inserted in the cylindrical portion 2a, the main body 3 can be rotated with respect to the cylindrical portion 2a. Further, since the outer diameter of the main body portion 3 substantially matches the inner diameter of the cylindrical portion 2a, when the closed space monitoring device 1 is installed in the duct D, the duct is formed through the gap between the cylindrical portion 2a and the main body portion 3. The air inside the D is prevented from leaking to the outside of the duct D. In order to prevent air leakage from a slight gap between the fixing portion 2 and the main body portion 3, a ring-shaped seal body made of heat-resistant rubber or the like is attached to the base of the main body portion 3 in contact with the end portion of the fixing portion 2. It may be arranged.
  • a convex portion for restricting insertion of the main body 3 from below is provided in the cylindrical portion 2a on the side surface on the rear end side of the main body 3.
  • the bottom surface of the flange portion 2b is provided with a scale indicating an angle with respect to the circular hole of the cylindrical portion 2a, and the above-mentioned convex portion or a mark or the like provided on the side surface on the rear end side of the main body portion 3 is graduated. It is possible to adjust the rotation position of the main body 3 by adjusting to.
  • a photographing portion 3b and a sensor portion 3c for detecting the degree of dirt in the duct are arranged at the tip portion 3a of the main body portion 3 protruding into the duct D.
  • a communication unit 3e including an antenna or the like for transmitting video information captured by the photographing unit 3b and measurement information measured by the sensor unit 3c is arranged. ..
  • control unit 3f arranged in the main body unit 3 is connected to the photographing unit 3b, the sensor unit 3c, and the communication unit 3e, and controls each unit.
  • the main body 3 has a built-in lithium battery or the like that can be driven for a long period of time (not shown), and supplies electric power to the photographing unit 3b, the sensor unit 3c, the communication unit 3e, and the control unit 3f. Further, instead of such a built-in power supply, an AC power supply may be input from the outside to an AC / DC conversion unit provided at the rear end portion 3d of the main body portion 3 to supply power to each unit. ..
  • the photographing unit 3b has an imaging direction orthogonal to the longitudinal direction of the main body portion 3, and the sensor unit 3c is arranged on the back surface side opposite to the imaging unit 3b. It is sufficient that at least the photographing unit 3b is arranged at the tip portion 3a of the main body unit 3, and it is not always necessary to arrange the sensor unit 3c.
  • the photographing unit 3b may employ a fisheye lens capable of photographing a wide-angle range, or may have a zoom function operated from the outside. Further, an infrared camera may be used, or a light unit may be provided in the vicinity of the photographing unit 3b so that the light unit is turned on in synchronization with the imaging of the photographing unit 3b.
  • the temperature sensor may be arranged at a position parallel to the photographing unit 3b and the main body 3 in the longitudinal direction. This temperature sensor may be arranged in parallel with the sensor unit 3c on the front surface side, or the temperature sensor may be arranged on each of the front surface side and the back surface side.
  • the light emitting unit and the light receiving unit are arranged in parallel, and the light receiving unit receives a predetermined amount of light emitted by the light emitting unit.
  • the degree of attenuation of the amount of light received it is possible to estimate the degree of adhesion of dust and the like adhering to the light emitting portion and the light receiving portion.
  • the main body 3 When the closed space monitoring device 1 is installed in the duct D, the main body 3 is rotatably locked to the fixing portion 2 in the insertion hole S provided in the center of the side surface of the duct D, for example, the bottom surface. In this state, insert from the tip 3a side.
  • the flange portion 2b of the fixing portion 2 is pushed in until it comes into contact with the side surface of the duct D, and the flange portion 2b is fixed to the duct D.
  • This fixing may be fixed to the side surface of the duct D by bolts or the like via screw holes provided at the four corners of the flange portion 2b, or a heat-resistant adhesive may be applied to the flange portion 2b and adhesively fixed to the side surface of the duct D. You may try to do it.
  • the fixing portion 2 is fixed to the center of the side surface of the duct D having a rectangular cross section, but when the closed space monitoring device 1 is installed in the duct D having a circular cross section, the duct D is used. It is fixed to the duct D by using the fixing portion 2 in which the flange portion 2b is curved along the curved surface.
  • the photographing portion 3b and the sensor portion 3c provided at the tip portion 3a of the main body portion 3 are arranged in the center of the cross section of the duct D.
  • the main body portion 3 is rotated with respect to the fixed portion 2 to align the main body portion 3 with respect to the scale provided on the flange portion 2b.
  • the angle of the main body 3 is adjusted so that the shooting direction of the shooting unit 3b faces the fire damper B, and the installation of the closed space monitoring device 1 is completed.
  • the angle of the main body 3 may be adjusted while watching the image taken by the fire damper B without using the scale.
  • the degree of adhesion of dust and the like is estimated by the sensor unit 3c arranged in the direction facing the airflow direction A generated in the duct D. Is possible.
  • the control unit 3f determines that when the amount of light received by the light receiving unit of the sensor unit 3c is equal to or less than a predetermined value, dust accumulates in the duct D and there is a risk of ignition, and the control unit 3f determines that there is a risk of ignition, and the mobile terminal T via the communication unit 3e. Etc. may be notified.
  • the temperature sensor when the temperature sensor is provided at the tip of the main body 3, it is determined that the temperature is abnormal when the temperature in the duct D exceeds a predetermined value, and the temperature is moved via the communication unit 3e.
  • the terminal T or the like may be notified.
  • the image of the fire prevention damper B photographed by the photographing unit 3b can be displayed on the screen T1 of the mobile terminal T via the communication unit 3e.
  • the mobile terminal T for example, a tablet PC equipped with a wireless LAN function is used, and as shown in FIG. 1, video information from a closed space monitoring device 1 installed at a plurality of locations is divided and displayed on a screen T1. It is also possible. Further, the screen T1 of the mobile terminal T may display the degree of dirt in the duct D detected by the sensor unit 3c in addition to displaying the image of the fire damper B.
  • the fire damper B is obliged to perform regular visual inspections, and the administrator periodically uses the mobile terminal T to check the images of the fire damper B transmitted from the closed space monitoring device 1. ..
  • the administrator cleans the inside of the duct D and the fire-prevention damper B, or the fire-prevention damper. Give instructions such as replacing parts of B. Similarly, when it is determined that the degree of adhesion of dust or the like by the sensor unit 3c is high, the administrator gives an instruction to clean the inside of the duct D.
  • the main body unit 3 can be pulled out from the fixed unit 2 and removed. Is possible. Then, after cleaning each part of the main body portion 3 removed from the fixing portion 2, the main body portion 3 is inserted into the fixing portion 2 again and fixed.
  • the closed space monitoring device 1 is arranged in the duct D, but the place where the closed space monitoring device 1 is installed is not necessarily the duct D for supplying and exhausting air, and the closed space with the monitored object is present. If so, it can be installed.
  • the closed space monitoring device As described above, according to the closed space monitoring device according to the present invention, equipment installed in the closed space from a distant place without directly inspecting the inside of the duct D with respect to the closed space such as the duct D, for example, the duct D. You can check the status of the fire prevention damper B inside. Furthermore, the situation inside the duct D should be checked without stopping the air conditioning that supplies and exhausts air, and the cleaning of the duct D and the fire damper B, the replacement of parts of the fire damper B, etc. should be decided according to the situation. Is possible.

Abstract

A closed-space monitoring device 1 consists of a securing part that is secured in an insertion hole provided to a wall surface that forms a closed space such as a duct D, and a cylindrical body 3 that is supported inside the securing part so as to be able to freely rotate. The body 3 has an image-capturing portion 3b and a sensor portion 3c disposed at a tip portion 3a that projects inside the duct D, and displays, on a screen T1 of a mobile terminal T, a video of a fire-preventing damper B captured by the image-capturing portion 3b via a communication portion 3e.

Description

閉空間監視装置Closed space monitoring device
　本発明は、閉空間内の映像を離れた個所から確認する閉空間監視装置に関するものである。 The present invention relates to a closed space monitoring device for confirming an image in a closed space from a distant place.
　空調設備であって給気・排気を行う空調ダクトには、特許文献１に示すような防火ダンパの設置が義務付けられている。この防火ダンパは空調ダクト内に発生した高温の煙等により自動的に流路を閉止する構造とされている。 It is obligatory to install a fire prevention damper as shown in Patent Document 1 in the air conditioning duct that supplies and exhausts air, which is an air conditioning equipment. This fire damper has a structure that automatically closes the flow path by high-temperature smoke or the like generated in the air conditioning duct.
　特許文献１の防火ダンパでは、感熱溶断部材が火災発生の際の熱により溶融することで付勢力が解除され、水平方向に向けて配置されている複数の羽根部が、垂直方向に回動して、流路を閉止する。 In the fire protection damper of Patent Document 1, the heat-sensitive fusing member is melted by the heat at the time of a fire to release the urging force, and a plurality of blades arranged in the horizontal direction rotate in the vertical direction. And close the flow path.
　流路を閉止することで、建物内に火災が発生した場合に、空調ダクトを通じて火災が広がることを防止することができる。このように火災の延焼を防止する防火ダンパについては、設置及び定期的な点検が義務付けられている。 By closing the flow path, if a fire breaks out in the building, it is possible to prevent the fire from spreading through the air conditioning duct. As for the fire damper to prevent the spread of fire in this way, installation and regular inspection are obligatory.
　この定期的な点検は、熱溶断部材に対する粉塵や油分の付着や、羽根部の故障等により防火ダンパが火災発生時に正常に作常しないことを予防するため、ダクト内から目視で点検する必要がある。 This regular inspection should be visually inspected from inside the duct to prevent the fire damper from malfunctioning in the event of a fire due to the adhesion of dust or oil to the heat-fusing member or the failure of the blades. be.
特開２００７－７８２１３号公報Japanese Unexamined Patent Publication No. 2007-78213
　しかし、上述のダクト内から、目視で防火ダンパを点検するためには、空調を一時的に停止し、防火ダンパ近傍のダクトの一部を取り外す必要があり、点検に手間を要するという問題がある。 However, in order to visually inspect the fire damper from inside the above-mentioned duct, it is necessary to temporarily stop the air conditioning and remove a part of the duct near the fire damper, which causes a problem that the inspection takes time and effort. ..
　本発明の目的は、上述の課題を解消し、離れた個所から閉空間に設置した設備の状況を確認することが可能な閉空間監視装置を提供することにある。 An object of the present invention is to solve the above-mentioned problems and to provide a closed space monitoring device capable of confirming the status of equipment installed in a closed space from a distant place.
　上記目的を達成するための本発明に係る閉空間監視装置は、閉空間を形成する側面部に設けた挿入孔に固定される固定部と、該固定部内に回動自由に支持される円柱状の本体部とから構成される閉空間監視装置であって、前記閉空間内に突出する前記本体部の先端部に、前記本体部の長手方向に対して直交する方向を撮影方向とする撮影部を配置し、前記閉空間外に配置される前記本体部の後端部に、前記撮影部により撮影された映像情報を送信する通信部を配置したことを特徴とする。 The closed space monitoring device according to the present invention for achieving the above object has a fixed portion fixed to an insertion hole provided in a side surface portion forming the closed space, and a columnar column freely rotatably supported in the fixed portion. A closed space monitoring device composed of a main body portion of the above, wherein the imaging direction is a direction orthogonal to the longitudinal direction of the main body portion at the tip end portion of the main body portion protruding into the closed space. Is arranged, and a communication unit for transmitting video information photographed by the photographing unit is arranged at the rear end portion of the main body portion arranged outside the closed space.
　本発明に係る閉空間監視装置によれば、ダクト等の閉空間に対して、空調等を停止することなく、離れた個所から閉空間内に設置した設備の状態を確認することが可能である。 According to the closed space monitoring device according to the present invention, it is possible to check the state of equipment installed in a closed space from a distant place without stopping air conditioning or the like for a closed space such as a duct. ..
ダクト内に閉空間監視装置を設置した状態のシステム構成図である。It is a system configuration diagram in the state where the closed space monitoring device is installed in the duct. ダクト内に閉空間監視装置を設置した状態の斜視図である。It is a perspective view of the state where the closed space monitoring device is installed in the duct. 閉空間監視装置の構成図である。It is a block diagram of the closed space monitoring device. ダクト内に火災が発生した状態の説明図である。It is explanatory drawing of the state that the fire occurred in the duct.
　本発明を本実施例に基づいて詳細に説明する。
  図１はダクトＤに本実施例の閉空間監視装置を設置した状態のシステム構成図、図２はダクトＤに閉空間監視装置を設置した状態の斜視図であり、図３は閉空間監視装置の構成図である。 The present invention will be described in detail with reference to the present examples.
FIG. 1 is a system configuration diagram in which the closed space monitoring device of this embodiment is installed in the duct D, FIG. 2 is a perspective view in a state where the closed space monitoring device is installed in the duct D, and FIG. 3 is a closed space monitoring device. It is a block diagram of.
　閉空間監視装置１を設置するダクトＤは、例えば工場等に設置した給気、排気を行うものであり、排気用のダクトでは油分や粉塵等を含む空気を外部に排気する。また、調理場の調理により発生する排煙を外部に排気するための排煙用のダクトであってもよい。 The duct D in which the closed space monitoring device 1 is installed is for supplying and exhausting air, for example, installed in a factory or the like, and the duct for exhausting exhausts air containing oil, dust, etc. to the outside. Further, it may be a smoke exhaust duct for exhausting the smoke exhaust generated by cooking in the kitchen to the outside.
　ダクトＤは矩形、円形等の適宜の断面形状をしており、この断面形状に応じた前述の防火ダンパが区画毎に配置されている。図１に示すように防火ダンパＢの羽根部Ｂ１は、通常時には気流が発生する気流方向Ａと平行になるように配置されている。 The duct D has an appropriate cross-sectional shape such as a rectangle or a circle, and the above-mentioned fire damper corresponding to this cross-sectional shape is arranged for each section. As shown in FIG. 1, the blade portion B1 of the fire prevention damper B is arranged so as to be parallel to the airflow direction A in which an airflow is normally generated.
　図４に示すように、気流の上流側で火災Ｆが発生した場合に、火災による熱により防火ダンパＢの感熱溶断部材が溶融することで、付勢力が解除されて羽根部Ｂ１が９０度回転し、ダクトＤの流路が閉止される。このように防火ダンパＢによって流路が閉止されることで、防火ダンパＢの下流側に火災が拡がることを防止することができる。 As shown in FIG. 4, when a fire F occurs on the upstream side of the air flow, the heat-sensitive fusing member of the fire prevention damper B melts due to the heat of the fire, so that the urging force is released and the blade portion B1 rotates 90 degrees. Then, the flow path of the duct D is closed. By closing the flow path by the fire prevention damper B in this way, it is possible to prevent the fire from spreading to the downstream side of the fire prevention damper B.
　図１に示すように監視対象である防火ダンパＢの近傍であって、ダクトＤ内で発生する気流に対して上流側のダクトＤの側面部に、閉空間監視装置１は設置される。 As shown in FIG. 1, the closed space monitoring device 1 is installed on the side surface of the duct D in the vicinity of the fire prevention damper B to be monitored and on the upstream side of the air flow generated in the duct D.
　閉空間監視装置１は、ダクトＤ等の閉空間を形成する側面部に設けた挿入孔Ｓに、固定される固定部２と、この固定部２内に回動自由に支持される円柱状の本体部３とから構成されている。 The closed space monitoring device 1 has a fixed portion 2 fixed to an insertion hole S provided in a side surface portion forming a closed space such as a duct D, and a columnar columnar freely supported in the fixed portion 2. It is composed of a main body portion 3.
　固定部２は金属又は耐熱性硬質樹脂材から成り、ダクトＤの挿入孔Ｓに挿入する円筒部２ａと、この円筒部２ａの底部に設けられ、ダクトＤの外側に固定するフランジ部２ｂとから構成されている。 The fixing portion 2 is made of a metal or a heat-resistant hard resin material, and is composed of a cylindrical portion 2a to be inserted into the insertion hole S of the duct D and a flange portion 2b provided at the bottom of the cylindrical portion 2a and fixed to the outside of the duct D. It is configured.
　円筒部２ａの外径は、１６ｍｍ程度であり、挿入孔Ｓの直径よりも小さく、円筒部２ａの大きさは高さ１２ｃｍ、厚み２ｍｍ程度である。また、フランジ部２ｂの大きさは、例えば縦横７ｃｍ程度であり、厚さは２ｍｍ程度である。 The outer diameter of the cylindrical portion 2a is about 16 mm, which is smaller than the diameter of the insertion hole S, and the size of the cylindrical portion 2a is about 12 cm in height and about 2 mm in thickness. The size of the flange portion 2b is, for example, about 7 cm in length and width, and the thickness is about 2 mm.
　本体部３は、金属又は耐熱性硬質樹脂材から成り、高さが例えば１７ｃｍ程度の円柱状とされている。なお、本体部３の高さは、ダクトＤの断面の直径の半分よりも若干長く、ダクトＤの直径に応じた高さの本体部３を適宜に選択する。 The main body 3 is made of metal or a heat-resistant hard resin material, and has a columnar height of, for example, about 17 cm. The height of the main body 3 is slightly longer than half the diameter of the cross section of the duct D, and the main body 3 having a height corresponding to the diameter of the duct D is appropriately selected.
　円筒部２ａ内に本体部３が挿入された状態で、本体部３を円筒部２ａに対して回動可能とされている。また、本体部３の外径は、円筒部２ａの内径と略一致していることから、ダクトＤに閉空間監視装置１を設置した際に、円筒部２ａと本体部３との隙間からダクトＤ内の空気がダクトＤ外に漏れることはないようにされている。なお、固定部２と本体部３との僅かな隙間からの空気漏れを防止するために、耐熱ゴム等から成るリング状のシール体を固定部２の端部と接触する本体部３の根本に配置するようにしてもよい。 With the main body 3 inserted in the cylindrical portion 2a, the main body 3 can be rotated with respect to the cylindrical portion 2a. Further, since the outer diameter of the main body portion 3 substantially matches the inner diameter of the cylindrical portion 2a, when the closed space monitoring device 1 is installed in the duct D, the duct is formed through the gap between the cylindrical portion 2a and the main body portion 3. The air inside the D is prevented from leaking to the outside of the duct D. In order to prevent air leakage from a slight gap between the fixing portion 2 and the main body portion 3, a ring-shaped seal body made of heat-resistant rubber or the like is attached to the base of the main body portion 3 in contact with the end portion of the fixing portion 2. It may be arranged.
　また、図示を省略しているが本体部３の後端側の側面には、円筒部２ａ内に本体部３の下方からの挿入を規制する凸部が設けられている。また、フランジ部２ｂの底面には、円筒部２ａの円孔に対して角度を示す目盛が設けられており、本体部３の後端側の側面に設けた前述の凸部又は目印等を目盛に合わせることで、本体部３の回動位置の調整を行うことが可能である。 Further, although not shown, a convex portion for restricting insertion of the main body 3 from below is provided in the cylindrical portion 2a on the side surface on the rear end side of the main body 3. Further, the bottom surface of the flange portion 2b is provided with a scale indicating an angle with respect to the circular hole of the cylindrical portion 2a, and the above-mentioned convex portion or a mark or the like provided on the side surface on the rear end side of the main body portion 3 is graduated. It is possible to adjust the rotation position of the main body 3 by adjusting to.
　図３に示すように、ダクトＤ内に突出される本体部３の先端部３ａには、撮影部３ｂ及びダクト内の汚れ具合を検出するセンサ部３ｃが配置されている。前記ダクトＤ外に配置される後端部３ｄには、撮影部３ｂにより撮影された映像情報やセンサ部３ｃにより測定された測定情報を送信する、アンテナ等から成る通信部３ｅが配置されている。 As shown in FIG. 3, a photographing portion 3b and a sensor portion 3c for detecting the degree of dirt in the duct are arranged at the tip portion 3a of the main body portion 3 protruding into the duct D. At the rear end portion 3d arranged outside the duct D, a communication unit 3e including an antenna or the like for transmitting video information captured by the photographing unit 3b and measurement information measured by the sensor unit 3c is arranged. ..
　また、本体部３内に配置した制御部３ｆは、撮影部３ｂ、センサ部３ｃ及び通信部３ｅと接続されており、各部の制御を行っている。 Further, the control unit 3f arranged in the main body unit 3 is connected to the photographing unit 3b, the sensor unit 3c, and the communication unit 3e, and controls each unit.
　本体部３は、図示しない長期間駆動可能なリチウム電池等を内蔵しており、撮影部３ｂ、センサ部３ｃ、通信部３ｅ及び制御部３ｆに対して電力を供給している。また、このような内蔵型電源に代えて、外部からＡＣ電源を本体部３の後端部３ｄに設けたＡＣ・ＤＣ変換部に入力し、各部に対して電力を供給するようにしてもよい。 The main body 3 has a built-in lithium battery or the like that can be driven for a long period of time (not shown), and supplies electric power to the photographing unit 3b, the sensor unit 3c, the communication unit 3e, and the control unit 3f. Further, instead of such a built-in power supply, an AC power supply may be input from the outside to an AC / DC conversion unit provided at the rear end portion 3d of the main body portion 3 to supply power to each unit. ..
　撮影部３ｂは本体部３の長手方向に対して直交する方向を撮影方向としており、センサ部３ｃは、撮影部３ｂの反対側である裏面側に配置されている。なお、本体部３の先端部３ａには、少なくとも撮影部３ｂが配置されていればよく、必ずしもセンサ部３ｃを配置する必要はない。 The photographing unit 3b has an imaging direction orthogonal to the longitudinal direction of the main body portion 3, and the sensor unit 3c is arranged on the back surface side opposite to the imaging unit 3b. It is sufficient that at least the photographing unit 3b is arranged at the tip portion 3a of the main body unit 3, and it is not always necessary to arrange the sensor unit 3c.
　撮影部３ｂは広角範囲を撮影可能な魚眼レンズを採用してもよく、又は外部からの操作によるズーム機能を有するものであってもよい。更には、赤外線カメラを用いたり、撮影部３ｂの近傍にライト部を設け、撮影部３ｂの撮影と同期して、ライト部を点灯させるようにしてもよい。 The photographing unit 3b may employ a fisheye lens capable of photographing a wide-angle range, or may have a zoom function operated from the outside. Further, an infrared camera may be used, or a light unit may be provided in the vicinity of the photographing unit 3b so that the light unit is turned on in synchronization with the imaging of the photographing unit 3b.
　更には、撮影部３ｂと本体部３の長手方向に並列とする個所に温度センサを配置してもよい。この温度センサは、表面側のセンサ部３ｃと並列に配置してもよく、表面側、裏面側のそれぞれに温度センサを配置するようにしてもよい。 Further, the temperature sensor may be arranged at a position parallel to the photographing unit 3b and the main body 3 in the longitudinal direction. This temperature sensor may be arranged in parallel with the sensor unit 3c on the front surface side, or the temperature sensor may be arranged on each of the front surface side and the back surface side.
　本体部３の長手方向に対して直交する方向を測定エリアとするセンサ部３ｃは、例えば発光部と受光部とを並列に配置し、発光部による所定量の発光量に対して、受光部で受光する受光量の減衰度合を計測することで、発光部と受光部に付着した塵芥等の付着度を推定することが可能である。 In the sensor unit 3c whose measurement area is a direction orthogonal to the longitudinal direction of the main body 3, for example, the light emitting unit and the light receiving unit are arranged in parallel, and the light receiving unit receives a predetermined amount of light emitted by the light emitting unit. By measuring the degree of attenuation of the amount of light received, it is possible to estimate the degree of adhesion of dust and the like adhering to the light emitting portion and the light receiving portion.
　閉空間監視装置１をダクトＤ内に設置する際には、ダクトＤの側面、例えば底面の中央に設けた挿入孔Ｓに、本体部３が固定部２に対して回動自在に係止された状態で、先端部３ａ側から挿入する。 When the closed space monitoring device 1 is installed in the duct D, the main body 3 is rotatably locked to the fixing portion 2 in the insertion hole S provided in the center of the side surface of the duct D, for example, the bottom surface. In this state, insert from the tip 3a side.
　そして、固定部２のフランジ部２ｂがダクトＤの側面に当接するまで押し込み、フランジ部２ｂをダクトＤに固定する。この固定はフランジ部２ｂの四隅に設けたねじ孔を介してボルト等によりダクトＤの側面に固定してもよいし、フランジ部２ｂに耐熱性接着剤を塗布してダクトＤの側面に接着固定するようにしてもよい。 Then, the flange portion 2b of the fixing portion 2 is pushed in until it comes into contact with the side surface of the duct D, and the flange portion 2b is fixed to the duct D. This fixing may be fixed to the side surface of the duct D by bolts or the like via screw holes provided at the four corners of the flange portion 2b, or a heat-resistant adhesive may be applied to the flange portion 2b and adhesively fixed to the side surface of the duct D. You may try to do it.
　また、実施例では、断面が矩形であるダクトＤの側面中央に固定部２を固定しているが、断面が円形であるダクトＤに閉空間監視装置１を設置する場合には、ダクトＤの曲面に沿って、フランジ部２ｂが湾曲した固定部２を用いて、ダクトＤに固定する。 Further, in the embodiment, the fixing portion 2 is fixed to the center of the side surface of the duct D having a rectangular cross section, but when the closed space monitoring device 1 is installed in the duct D having a circular cross section, the duct D is used. It is fixed to the duct D by using the fixing portion 2 in which the flange portion 2b is curved along the curved surface.
　フランジ部２ｂをダクトＤの側面に固定することで、本体部３の先端部３ａに設けた撮影部３ｂ及びセンサ部３ｃは、ダクトＤの断面中央に配置されることになる。 By fixing the flange portion 2b to the side surface of the duct D, the photographing portion 3b and the sensor portion 3c provided at the tip portion 3a of the main body portion 3 are arranged in the center of the cross section of the duct D.
　そして、図２の矢印に示すように、固定部２に対して本体部３を回動させて、フランジ部２ｂに設けた目盛に対して、本体部３の位置合わせを行う。撮影部３ｂの撮影方向が防火ダンパＢに向くように本体部３の角度調整を行い、閉空間監視装置１の設置が完了する。なお、目盛を用いずに、防火ダンパＢの撮影する映像を見ながら、本体部３の角度調整を行うようにしてもよい。 Then, as shown by the arrow in FIG. 2, the main body portion 3 is rotated with respect to the fixed portion 2 to align the main body portion 3 with respect to the scale provided on the flange portion 2b. The angle of the main body 3 is adjusted so that the shooting direction of the shooting unit 3b faces the fire damper B, and the installation of the closed space monitoring device 1 is completed. The angle of the main body 3 may be adjusted while watching the image taken by the fire damper B without using the scale.
　閉空間監視装置１を起動させると、図１に示すように、ダクトＤ内で発生する気流方向Ａに対向する方向に向けて配置されたセンサ部３ｃによって、塵芥等の付着度を推定することが可能となる。 When the closed space monitoring device 1 is activated, as shown in FIG. 1, the degree of adhesion of dust and the like is estimated by the sensor unit 3c arranged in the direction facing the airflow direction A generated in the duct D. Is possible.
　制御部３ｆは、センサ部３ｃの受光部による受光量が所定値以下となると、ダクトＤ内に塵芥が堆積し、引火の怖れがあると判断して、通信部３ｅを介して移動端末Ｔ等に報知するようにしてもよい。 The control unit 3f determines that when the amount of light received by the light receiving unit of the sensor unit 3c is equal to or less than a predetermined value, dust accumulates in the duct D and there is a risk of ignition, and the control unit 3f determines that there is a risk of ignition, and the mobile terminal T via the communication unit 3e. Etc. may be notified.
　また、前述のとおり本体部３の先端部に温度センサを設けた際は、ダクトＤ内の温度が所定値以上になった場合に異常温度であると判定して、通信部３ｅを介して移動端末Ｔ等に報知するようにしてもよい。 Further, as described above, when the temperature sensor is provided at the tip of the main body 3, it is determined that the temperature is abnormal when the temperature in the duct D exceeds a predetermined value, and the temperature is moved via the communication unit 3e. The terminal T or the like may be notified.
　また、撮影部３ｂにより撮影される防火ダンパＢの映像を、通信部３ｅを介して移動端末Ｔの画面Ｔ１に表示させることができる。移動端末Ｔには、例えば無線ＬＡＮ機能を備えたタブレットＰＣが用いられ、図１に示すように複数の個所に設置した閉空間監視装置１からの映像情報を、画面Ｔ１に分割して表示させることも可能である。更には、移動端末Ｔの画面Ｔ１に防火ダンパＢの映像の表示に併せて、センサ部３ｃが検出したダクトＤ内の汚れ具合を表示させるようにしてもよい。 Further, the image of the fire prevention damper B photographed by the photographing unit 3b can be displayed on the screen T1 of the mobile terminal T via the communication unit 3e. For the mobile terminal T, for example, a tablet PC equipped with a wireless LAN function is used, and as shown in FIG. 1, video information from a closed space monitoring device 1 installed at a plurality of locations is divided and displayed on a screen T1. It is also possible. Further, the screen T1 of the mobile terminal T may display the degree of dirt in the duct D detected by the sensor unit 3c in addition to displaying the image of the fire damper B.
　防火ダンパＢは前述のように、目視による定期点検が義務付けられており、管理者は定期的に移動端末Ｔを用いて、閉空間監視装置１から送信される防火ダンパＢの映像による確認を行う。 As described above, the fire damper B is obliged to perform regular visual inspections, and the administrator periodically uses the mobile terminal T to check the images of the fire damper B transmitted from the closed space monitoring device 1. ..
　防火ダンパＢの映像から、熱溶断部材に対する粉塵や油分の付着量が多かったり、羽根部Ｂ１の故障等を発見した場合には、管理者はダクトＤ内や防火ダンパＢの清掃や、防火ダンパＢの部品交換等の指示を行う。同様に、センサ部３ｃによる塵芥等の付着度が高いと判断された場合も、管理者はダクトＤ内の清掃の指示を行う。 If a large amount of dust or oil adheres to the heat-fusing member or a failure of the blade B1 is found from the image of the fire-prevention damper B, the administrator cleans the inside of the duct D and the fire-prevention damper B, or the fire-prevention damper. Give instructions such as replacing parts of B. Similarly, when it is determined that the degree of adhesion of dust or the like by the sensor unit 3c is high, the administrator gives an instruction to clean the inside of the duct D.
　また、撮影部３ｂ、センサ部３ｃ、ライト部及び温度センサを本体部３に円柱状の外形に対して、凹ませた状態で配置することで、固定部２から本体部３を引き抜いて取り外すことが可能となる。そして、固定部２から取り外した本体部３の各部に対して、掃除等を行った後に再度固定部２に本体部３を挿入して固定する。 Further, by arranging the photographing unit 3b, the sensor unit 3c, the light unit, and the temperature sensor in the main body unit 3 in a recessed state with respect to the cylindrical outer shape, the main body unit 3 can be pulled out from the fixed unit 2 and removed. Is possible. Then, after cleaning each part of the main body portion 3 removed from the fixing portion 2, the main body portion 3 is inserted into the fixing portion 2 again and fixed.
　なお、実施例においては、閉空間監視装置１はダクトＤ内に配置することについて説明したが、設置する個所は必ずしも給気、排気を行うダクトＤとは限らず、監視対象物のある閉空間であれば設置することが可能である。 In the embodiment, it has been described that the closed space monitoring device 1 is arranged in the duct D, but the place where the closed space monitoring device 1 is installed is not necessarily the duct D for supplying and exhausting air, and the closed space with the monitored object is present. If so, it can be installed.
　このように、本発明に係る閉空間監視装置によれば、ダクトＤ等の閉空間に対して、直接ダクトＤ内を点検することなく、離れた個所から閉空間に設置した設備、例えばダクトＤ内の防火ダンパＢの状況を確認することができる。更には、給気、排気を行う空調を停止することなく、ダクトＤ内の状況を確認し、状況に応じてダクトＤや防火ダンパＢの清掃や、防火ダンパＢの部品交換等を判断することが可能である。 As described above, according to the closed space monitoring device according to the present invention, equipment installed in the closed space from a distant place without directly inspecting the inside of the duct D with respect to the closed space such as the duct D, for example, the duct D. You can check the status of the fire prevention damper B inside. Furthermore, the situation inside the duct D should be checked without stopping the air conditioning that supplies and exhausts air, and the cleaning of the duct D and the fire damper B, the replacement of parts of the fire damper B, etc. should be decided according to the situation. Is possible.
　１　閉空間監視装置
　２　固定部
　２ａ　円筒部
　２ｂ　フランジ部
　３　本体部
　３ａ　先端部
　３ｂ　撮影部
　３ｃ　センサ部
　３ｄ　後端部
　３ｅ　通信部
　Ａ　気流方向
　Ｂ　防火ダンパ
　Ｄ　ダクト 1 Closed space monitoring device 2 Fixed part 2a Cylindrical part 2b Flange part 3 Main body part 3a Tip part 3b Imaging part 3c Sensor part 3d Rear end part 3e Communication part A Airflow direction B Fireproof damper D Duct

Claims (7)

  1. 　閉空間を形成する側面部に設けた挿入孔に固定される固定部と、該固定部内に回動自由に支持される円柱状の本体部とから構成される閉空間監視装置であって、
    　前記閉空間内に突出する前記本体部の先端部に、前記本体部の長手方向に対して直交する方向を撮影方向とする撮影部を配置し、前記閉空間外に配置される前記本体部の後端部に、前記撮影部により撮影された映像情報を送信する通信部を配置したことを特徴とする閉空間監視装置。     A closed space monitoring device composed of a fixed portion fixed to an insertion hole provided in a side surface portion forming a closed space and a columnar main body portion freely rotatably supported in the fixed portion.
    An imaging unit whose imaging direction is orthogonal to the longitudinal direction of the main body is arranged at the tip of the main body protruding into the closed space, and the main body is arranged outside the closed space. A closed space monitoring device characterized in that a communication unit for transmitting video information captured by the imaging unit is arranged at the rear end portion.
  2. 　前記閉空間は給気、排気を行うダクトであり、該ダクトに設置された防火ダンパの近傍であって、前記ダクト内で発生する気流に対して上流側の前記ダクトの側面部中央に前記挿入孔を設け、該挿入孔に前記固定部を固定することを特徴とする請求項１に記載された閉空間監視装置。 The closed space is a duct for supplying and exhausting air, and is inserted in the center of the side surface of the duct on the upstream side of the airflow generated in the duct in the vicinity of the fire damper installed in the duct. The closed space monitoring device according to claim 1, wherein a hole is provided and the fixing portion is fixed to the insertion hole.
  3. 　前記撮影部は前記防火ダンパを撮影するように配置されていることを特徴とする請求項２に記載された閉空間監視装置。 The closed space monitoring device according to claim 2, wherein the photographing unit is arranged so as to photograph the fire prevention damper.
  4. 　前記撮影部の裏面側の前記先端部に、前記閉空間の汚れ具合を検出するセンサ部を配置したことを特徴とする請求項１に記載された閉空間監視装置。 The closed space monitoring device according to claim 1, wherein a sensor unit for detecting the degree of contamination of the closed space is arranged at the tip end portion on the back surface side of the photographing unit.
  5. 　前記固定部は前記挿入孔に挿入する円筒部を有し、該円筒部内に前記本体部が挿入された状態で、前記本体部を前記固定部に対して回動可能とすることを特徴とする請求項１に記載された閉空間監視装置。 The fixing portion has a cylindrical portion to be inserted into the insertion hole, and is characterized in that the main body portion can be rotated with respect to the fixing portion in a state where the main body portion is inserted into the cylindrical portion. The closed space monitoring device according to claim 1.
  6. 　前記撮影部により撮影された映像情報を、前記通信部を介して移動端末に送信することを特徴する請求項１に記載された閉空間監視装置。 The closed space monitoring device according to claim 1, wherein the video information captured by the photographing unit is transmitted to the mobile terminal via the communication unit.
  7. 　前記本体部の先端部に、温度センサを設けたことを特徴する請求項１に記載された閉空間監視装置。 The closed space monitoring device according to claim 1, wherein a temperature sensor is provided at the tip of the main body.
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