LED (Light-Emitting Diode) light source

Abstract

The invention discloses a LED (Light-Emitting Diode) light source which comprises a capacitive energy storage part and a rectification circuit. The capacitive energy storage part comprises a polyester film core; a zinc foil layer is surrounded outside the polyester film core; a polyester film layer is surrounded outside the zinc foil layer; an insulating tape layer is surrounded outside the polyester film layer; both front and rear ends of the capacitive energy storage part are provided with epoxy resin layers; one end of the capacitive energy storage part is electrically connected with an AC (Alternate Current) power supply; and the other end of the capacitive energy storage part is firstly connected in series with two capacitances, then is connected in parallel with a resistance and is electrically connected with the rectification circuit. According to the invention, a high voltage and a low current can be output; not only can the LED illuminating effect be improved and the problems of lumens depreciation, high heat and the like are solved, but also the LED light source has high voltage resistance, is waterproof, has anti-creeping property and is not afraid of the electric shock or the instantaneous short circuit, the service life of a LED lamp bead is prolonged and the LED light source is simple in structure and low in cost.

Description

technical field [0001] The invention relates to a power supply, in particular to an LED power supply. Background technique [0002] The LED needs to be connected to a DC current to work, so in actual use, it is necessary to convert the 220V AC power into a DC power supply to the LED. At present, the LED power supply is generally a switching power supply, which uses high-frequency oscillation (50KHZ-100KHZ) electromagnetic induction to generate low voltage and high current. In this way, due to the high current, the power supply and the LED heat up severely. If you want to make the LED brighter, you must increase the current, but if you increase the current, the LED will be hotter, and the power supply body will also be hotter. Therefore, if the heat dissipation is not good, light decay will occur, and the power supply is more likely to fail. The high current leads to serious heating of the circuit, and most of the electric energy is converted into heat energy, resulting in...

AI Technical Summary

Problems solved by technology

Therefore, if the heat dissipation is not good, light decay will occur, and the power supply is more likely to fail

The high current leads to serious heating of the circuit, and most of the electric energy is converted into heat energy, resulting in low LED luminous efficiency (only 20%-30% efficiency), and finally manufacturers have to choose to use high-power LEDs, which not only increases the cost, but also high The power LED generates a lot of heat, causing high heat problems inside the lamp and the outer shell (the temperature is about 63 degrees -70 degrees)

In addition to the short life of the lamp bead and the large light decay, it is completely impossible to touch it with human hands due to high heat

In addition, there are many power supply components. If one component changes or fails due to high temperature, it will speed up the burning of the lamp beads and generate electromagnetic waves that are harmful to the human body.

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