External-power-source LED (light-emitting diode) energy-saving lamp

Abstract

The invention provides an external-power-source LED (light-emitting diode) energy-saving lamp which comprises an external power source and an energy-saving lamp tube, wherein the external power source comprises a switching power source, a constant-current module electrically connected with the switching power source, and a voltage dimming module; the energy-saving lamp tube comprises a lamp cap and a lamp tube body; a heat-dissipation aluminum substrate and an LED circuit board are arranged in the lamp tube body; the LED circuit board is attached to the heat-dissipation aluminum substrate and electrically connected with the voltage dimming module; and the LED circuit board is provided with LED patches. The external-power-source LED energy-saving lamp adopts the external isolated power source and the patch LED lamp with the minimal thermal resistance; and the maximum output voltage of the external isolated power source is 36V. When an adjustable light technology is matched and half aluminum is used for heat dissipation, the temperature in the lamp tube can be controlled within the junction temperature range allowed by the maximum luminescence efficiency, so that the LED energy-saving lamp has low light attenuation (the light attenuation after 1000-hour service time is less than 3%) and long service life (50000 hours or above on average).

Description

technical field [0001] The present invention belongs to the technical field of lighting device systems not included in large groups F21S4 / 00 to F21S10 / 00 or F21S19 / 00, such as modular structures, and specifically relates to external power supply LED energy-saving lamps. Background technique [0002] LED (light-emitting diode) lamps have gradually replaced traditional high-energy-consumption lamps, such as fluorescent lamps and incandescent lamps, because of their low energy consumption and high brightness, and have gradually become popular in people's daily life. With the development of LED technology, the energy consumption and heat dissipation of LED lamps need to be reduced. Now various companies are researching various LED lights to meet people's different needs for LED lights in different occasions. Domestic LED lights generally use built-in non-isolated or isolated power supply plus semi-aluminum heat dissipation pipe or no aluminum heat dissipation. Ordinary PVC tube...

AI Technical Summary

Problems solved by technology

Now various companies are researching various LED lights to meet people's different needs for LED lights in different occasions. Domestic LED lights generally use built-in non-isolated or isolated power supply plus semi-aluminum heat dissipation pipe or no aluminum heat dissipation. Ordinary PVC tubes, and low-end LED straw hat tubes are used as the light source. Due to the heat generated by the power supply itself and the small heat dissipation area of ​​the LED, the temperature inside the tube cannot be dissipated too quickly. Gradually the temperature rises, resulting in increased light decay. The life of the tube is reduced, and the life of ordinary domestic LED energy-saving lamps is 3000 to 10000 hours

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