LED ceiling light lamp beads

      About the use of LED ceiling light lamp beads. Power greater of Ceiling Light than 30W  generally use 1W LED lamp beads, power is less than 30W Ceiling Light generally use small power LED lamp beads (eg 3020,3014,3528, etc.). Recommended for low-power SMD LED, easy to heat, but also improve the luminous uniformity.
      Lamp beads can be arranged according to their shape, such as square led ceiling light, lamp beads arranged in a square; If the shape is round, then arranged in a circle. Even so, the arrangement of lamp beads still there are many ways, the internal structure of a typical LED ceiling as shown.

      In the picture, has two ring LED lamp beads on the annular plate, it is the use of 23 0.4W type 5730 LED lamp beads, total power is 18W. The middle of the rectangular box is the constant current power supply, compared to the lower right corner square box remote control receiver - photodiode can receive infrared control signals control the brightness.
      Should be noted that there are still a large number of low-cost LED ceiling light adopts small power hat lamp, because the straw hat lamp high thermal resistance (450 ℃ /W), it is difficult to heat export,  so the light fades serious, life is very short.

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The above article from Sourcechip official website (http://www.sc-ledlights.com/)
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