A signaling light source facilitates locating personnel under adverse conditions such as in a smoky environment and resists damage from exposure to a harsh user environment A lighting unit includes at least one, and preferably two, of the signaling light sources also includes at least one personnel identifying red-green-blue ("RGB") light emitting diode ("LED") Disclosed methods for operating the signaling light source include energizing operation of a LED light source by supplying a sequence of electrical current pulses which repeat at a rate which causes emitted light to pulse visually, supplying electrical current to a pair of LEDs alternatively connected either in series or in parallel depending upon battery operating condition, and monitoπng smoke density in environment around the signaling light source and modulating the intensity of emitted light responsive to smoke density


    Access

    Download


    Export, share and cite



    Title :

    Light-pipe based identification and location signaling light


    Contributors:

    Publication date :

    2015-06-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G08B SIGNALLING OR CALLING SYSTEMS , Signalisier- oder Rufsysteme / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein



    LIGHT-PIPE BASED IDENTIFICATION AND LOCATION SIGNALING LIGHT

    HATHAWAY KEVIN JOSEPH | European Patent Office | 2017

    Free access

    Light pipe

    CHEN LINSHENG | European Patent Office | 2022

    Free access

    VEHICLE SIGNALING LIGHT

    TOKIEDA YUKI / FURUBAYASHI KAZUYA | European Patent Office | 2017

    Free access

    VEHICLE SIGNALING LIGHT

    TOKIEDA YUKI / FURUBAYASHI KAZUYA | European Patent Office | 2017

    Free access

    Light signaling system

    WENDORFF TERRY C / BREHMER JACOB R / KOCH TIMOTHY | European Patent Office | 2022

    Free access