Microlens array based large-power ceiling lamp

Abstract

The invention discloses a microlens array based large-power ceiling lamp. The microlens array based large-power ceiling lamp comprises a housing, a light source module, a driving power supply and a radiating system; the housing comprises a base plate and a lampshade; the light source module comprises a microlens array, an LED array light source and a bottom plate; the radiating system comprises a heat transfer adhesive and a ceramic radiating sheet; the lampshade is positioned on the top of the lamp and is closely combined with the base plate through a clamp; the LED array light source and the driving power supply are both positioned on the bottom plate and are combined with the bottom plate through fixing parts; the driving power supply is positioned in the center of a ring belt which is composed of the bottom plate; the microlens array cover the LED array light source, and each microlens is corresponding to single LED lamp bead; the radiating system is positioned on the rear surface of the bottom plate; the ceramic radiating sheet is in filling connection with the bottom plate through the heat transfer adhesive, wherein the bottom plate is combined with the base plate through the fixing part. According to the microlens array based large-power ceiling lamp, the secondary optical design is performed, thus the light collecting efficiency is improved, the light diffusion angle is expanded, the radiating effect is obvious, and the appearance is nice.

Description

technical field [0001] The invention relates to an LED ceiling lamp, in particular to a high-power LED ceiling lamp based on a microlens array. Background technique [0002] In recent years, LED has been used as a new generation of lighting source because of its high brightness, small size, low power consumption, green, environmental protection and many other advantages. Existing LED ceiling lamps use multiple LED chips to form an array of LED combinations. Power LEDs are expected to replace traditional light sources and be used in the lighting field on a large scale. However: [0003] LED light extraction efficiency is low. At present, through optical design and LED chip technology, the internal quantum efficiency of LED reaches more than 90%, but the external quantum efficiency is only 30% to 50%. In addition to reasonable thermal management, optical design must also be optimized. And research; the optical design of primary packaging will affect the external quantum effic...

AI Technical Summary

Problems solved by technology

[0003] LED light extraction efficiency is low. At present, through optical design and LED chip technology, the internal quantum efficiency of LED reaches more than 90%, but the external quantum efficiency is only 30% to 50%. In addition to reasonable thermal management, optical design must also be optimized. And research; primary packaging optical design will affect the external quantum efficiency of LED devices, so that the overall light energy utilization rate of LED lamps is low, so the secondary optical design is particularly important

[0004] Secondly, as a solid-state light source, LEDs must form a certain array of multiple point sources to meet the total luminous flux requirements of lighting-level light sources when realizing power-level lighting. Light scattered over a range of angles or illuminated unevenly on a defined plane

Furthermore, although high-power LEDs can meet the brightness requirements of lighting, due to the high operating temperature, heat dissipation is required through a radiator, and the heat dissipation effect of the existing aluminum substrate is not ideal, resulting in a short service life of the LED chip

[0005] The existing LED chips are arranged in the center of the lamp in an array. This arrangement reduces the utilization rate of LED light energy. In order to achieve the corresponding required brightness, it is necessary to rely on increasing the number of LED chips, resulting in LED ceiling lamps working Higher temperature, higher power consumption, higher cost

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