Smoke detectors with light shields and alarm systems including such

    公开(公告)号:US11227474B2

    公开(公告)日:2022-01-18

    申请号:US16715027

    申请日:2019-12-16

    Abstract: Smoke detectors and smoke alarms are provided which have one or more light shields configured to block or minimize the transmission of ambient light to their light receivers. Light shield configurations for facilitating such functionality are provided as well. The shield/s include a material which attenuates a majority amount of light within a particular range of light that a light source of the smoke detector may be configured to only emit and/or the range of light the light receiver may configured to only convert to photocurrent. In some cases, the shield/s surrounds the light source and/or the light receiver arranged external to an interior chamber of the smoke detector. In some cases, the shield/s may at least partially span a connection side of an external housing of the smoke detector. Alternatively, the shield may be arranged in a space between the interior chamber and the connection side of the housing.

    Smoke detector shields and related methods

    公开(公告)号:US11282359B2

    公开(公告)日:2022-03-22

    申请号:US16690849

    申请日:2019-11-21

    Abstract: Smoke detector shields for blocking or minimizing the transmission of light therethrough and methods for use are provided. According to one embodiment, a method for shielding a smoke detector includes shielding at least a portion of a smoke detector operationally arranged within a room, and subsequently activating a light emission device arranged within the room, while shielding the smoke detector. In order to exclude light emission devices, which are commonly used within a room for lighting and/or communication purposes, the light emission device set forth in the method is configured for generating infrared light at a radiant intensity greater than approximately 1 W/sr, and/or ultraviolet light at a radiant intensity greater than approximately 1 W/sr, and/or visible light at a luminous flux greater than approximately 3000 lumens. Embodiments of smoke detector shields that prevent such light from penetrating the housing of a shielded smoke detector are provided herein.

    Smoke Detector Shields And Related Methods
    4.
    发明申请

    公开(公告)号:US20200090482A1

    公开(公告)日:2020-03-19

    申请号:US16690849

    申请日:2019-11-21

    Abstract: Smoke detector shields for blocking or minimizing the transmission of light therethrough and methods for use are provided. According to one embodiment, a method for shielding a smoke detector includes shielding at least a portion of a smoke detector operationally arranged within a room, and subsequently activating a light emission device arranged within the room, while shielding the smoke detector. In order to exclude light emission devices, which are commonly used within a room for lighting and/or communication purposes, the light emission device set forth in the method is configured for generating infrared light at a radiant intensity greater than approximately 1 W/sr, and/or ultraviolet light at a radiant intensity greater than approximately 1 W/sr, and/or visible light at a luminous flux greater than approximately 3000 lumens. Embodiments of smoke detector shields that prevent such light from penetrating the housing of a shielded smoke detector are provided herein.

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