Long-service-life, high-energy-saving and environment-friendly LED illuminating lamp capable of preventing fever
An LED lighting, energy-saving and environmental protection technology, applied in the field of lighting, can solve the problems of inability to return, reduce the service life of LED, cure the symptoms but not the root cause, and achieve the effects of saving production costs, prolonging service life, and simple circuit structure
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Embodiment 1
[0025] refer to figure 1 , the present invention divides 20 LED lamp beads 4 into three groups and connects them in parallel with the DC stabilized voltage power supply 1 respectively. The numbers of the three groups of LED lamp beads 4 are 3, 5 and 12 respectively. After the beads 4 are connected in parallel, fixed resistors R1 and R2 with different resistances are connected in series, wherein the resistance values of R1 and R2 are 0.1-1000 ohms, and one end of the fixed resistors R1 and R2 is connected to the DC stabilized power supply 1 through the switch unit 2 .
[0026] The switch unit 2 adopts a double-control switch or a multi-control switch. When the switch unit 2 is transferred to the following circuit, a group containing three LED lamp beads 4 is connected in series with a fixed resistor R1, and a group containing five LED lamp beads 4 It is connected in series with two parallel fixed resistors R1, and a group containing twelve LED lamp beads 4 is connected in se...
Embodiment 2
[0030] refer to figure 2 , 60 LED lamp beads 4 are divided into 12 groups and connected in parallel, and the number of LED lamp beads 4 in each group is 5, and each group of LED lamp beads 4 is connected in series with resistors R1 and R2 respectively, and the rated power of each LED lamp bead 4 The actual working voltage is 0.5W, when the LED lamp bead 4 is working, the actual working voltage is 3.1V, the total working current of the LED lamp bead 4 is 7.2A, the actual working power of the LED lamp bead 4 is 22.32W, the rated power of the present invention is 30W LED The lights are capable of 200 lumens / watt.
[0031] working principle:
[0032] The LED lighting lamp of the present invention simultaneously adjusts the current of each group of 4 LED lamp beads through the resistor 3, so that the current of the 4 groups of LED lamp beads is just right, and the LED lamp beads 4 will not heat up due to excessive current, nor will the current be too small. Make the luminous flu...
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