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heat emitted by LED signs and lights.

Discussion in 'LEDs and Optoelectronics' started by chand kewalramani, May 10, 2017.

  1. chand kewalramani

    chand kewalramani

    1
    0
    May 10, 2017
    i am chand kewalramani. i have question that how much heat is emitted by LED signs and lights. Has anybody measured it.
    it is commonly said they emit less heat but how much less. what is the measurment? how much percentage wise less? is there any scale to measure it?
    chand
     
  2. Alec_t

    Alec_t

    2,656
    699
    Jul 7, 2015
    Welcome to EP!
    (1-e)*p, where e is the sign/light efficiency and p is the input power.
    Yes. Ask a sign/light manufacturer.
    Conventional sign/light power (CP) minus LED power (LP).
    Probably Watts.
    100*(CP-LP)/CP.
    It's a percentage
     
  3. duke37

    duke37

    5,211
    718
    Jan 9, 2011
    The heat emitted can be estimated from the power input. Most of the input will be output as thermal energy, some will come out as light.
     
  4. AnalogKid

    AnalogKid

    2,297
    646
    Jun 10, 2015
    Are you asking about the heat produced by the entire display system (power supply, control electronics, drivers, LEDs) or just the LED emitters themselves?

    ak
     
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