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    A light-scattering-type smoke detector
    1.
    发明公开
    A light-scattering-type smoke detector 失效
    光散射型烟雾探测器

    公开(公告)号：EP0399244A3

    公开(公告)日：1991-05-02

    申请号：EP90108035.8

    申请日：1990-04-27

    申请人： NOHMI BOSAI KABUSHIKI KAISHA

    发明人： Igarashi, Yoshinori, c/o Nohmi Bosai Kabushiki K. ,  Yasukawa, Makoto, c/o Nohmi Bosai Kabushiki Kaisha ,  Ariga, Yasuo, c/o Nohmi Bosai Kabushiki Kaisha ,  Kobayashi, Ichiro, c/o Nohmi Bosai Kabushiki K. ,  Horiuchi, Satoru, c/o Nohmi Bosai Kabushiki Kaisha

    IPC分类号： G08B17/107

    CPC分类号： G08B17/107 ,  G08B17/113

    摘要： A light-scattering-type smoke detector is disclosed which comprises a base portion to be secured to a ceiling, a head part forming one of the parts of a detecting portion to be detachably mounted to the base portion through setscrews passed therethrough, and a dark box forming the other of the portions of the detecting part to be detachably connected to the head part by screwing the setscrews thereto, the dark box comprising a body portion and a cover portion put one upon another. The body portion has a printed circuit board integrally secured thereto on its upper surface and the dark box is surronded by a labyrinth around its outer periphery that is internally provided with a light projection element and a light receiving element. The smoke detector allows the dismounting of the head part from the base portion, and the dark box from the head part so that maintenance and repair of the smoke detector can be carried out quite easily.

    摘要翻译： 公开了一种光散射型烟雾探测器，其包括将要固定到天花板上的基座部分，形成检测部分的一个部分的头部分，该部分通过穿过其中的固定螺钉可拆卸地安装到基座部分， 通过将固定螺丝拧入其中而将检测部分的另一部分形成为可拆卸地连接到头部，暗盒包括相互叠置的主体部分和盖部分。 主体部分在其上表面上整体地固定有印刷电路板，并且暗盒围绕其外周围绕着迷宫，该迷宫在内部设置有光投射元件和光接收元件。 烟雾探测器允许从基座部分拆卸头部部件，并且从头部部件拆卸暗箱，从而可以相当容易地进行烟雾探测器的维护和修理。

    A light-scattering-type smoke detector
    3.
    发明公开
    A light-scattering-type smoke detector 失效
    Streulichttyp-Rauchdetektor。

    公开(公告)号：EP0399244A2

    公开(公告)日：1990-11-28

    申请号：EP90108035.8

    申请日：1990-04-27

    申请人： NOHMI BOSAI KABUSHIKI KAISHA

    发明人： Igarashi, Yoshinori, c/o Nohmi Bosai Kabushiki K. ,  Yasukawa, Makoto, c/o Nohmi Bosai Kabushiki Kaisha ,  Ariga, Yasuo, c/o Nohmi Bosai Kabushiki Kaisha ,  Kobayashi, Ichiro, c/o Nohmi Bosai Kabushiki K. ,  Horiuchi, Satoru, c/o Nohmi Bosai Kabushiki Kaisha

    IPC分类号： G08B17/107

    CPC分类号： G08B17/107 ,  G08B17/113

    摘要： A light-scattering-type smoke detector is disclosed which comprises a base portion to be secured to a ceiling, a head part forming one of the parts of a detecting portion to be detachably mounted to the base portion through setscrews passed therethrough, and a dark box forming the other of the portions of the detecting part to be detachably connected to the head part by screwing the setscrews thereto, the dark box comprising a body portion and a cover portion put one upon another. The body portion has a printed circuit board integrally secured thereto on its upper surface and the dark box is surronded by a labyrinth around its outer periphery that is internally provided with a light projection element and a light receiving element. The smoke detector allows the dismounting of the head part from the base portion, and the dark box from the head part so that maintenance and repair of the smoke detector can be carried out quite easily.

    摘要翻译： 公开了一种光散射型烟雾探测器，其包括固定到天花板的基部，形成检测部分中的一个部分的头部，通过穿过的固定螺丝可拆卸地安装到基部，以及黑暗 通过将固定螺丝拧到其上形成检测部分的另一个部分以可拆卸地连接到头部，该暗盒包括主体部分和盖部分。 主体部分具有在其上表面上一体地固定到其上的印刷电路板，并且暗盒由围绕其外周的迷宫围绕，内部设置有光投射元件和光接收元件。 烟雾探测器允许从基座部分拆卸头部部分，并且从头部部分拆下暗盒，从而可以非常容易地进行烟雾探测器的维护和修理。