LED illumination device and application thereof in lamp

Abstract

The invention relates to an LED illumination device and application thereof in a lamp. The LED illumination device consists of a heat dissipation supporting structure, a printed circuit board, a light source and a lampshade, wherein a layer of light conversion luminous film is arranged between the light source and the lampshade or on the lampshade, and the thickness of the luminous film is 30-200mu m. The light conversion luminous film can be excited by the light within the range of 200-480nm sent by an ultraviolet or blue light source so as to emit light the spectrum peak wavelength of which is in the range of 440-640 nm, and the light is combined with the remaining ultraviolet or blue light into white light or red, orange, yellow, olivine, green, blue green, green, blue, purple and purplish red lights. The illumination device is used on a variety of lamps, such as high-power street lamps, tunnel lamps, wall wash lamps, flood lights, underground lamps, landscape lamps, spot lights, car lights, commercial and civil illumination lamps and the like so as to greatly improve the photochromic homogeneity, color scope, color rendering properties and purity of the illumination lamp and radically solve the problem of glare of the conventional lamp.

Description

technical field [0001] The invention relates to an LED lighting device and its application in lamps, belonging to the field of semiconductor lighting. technical background [0002] The civilization of the earth and human beings is constantly moving forward with the generation and development of light sources. The light source has developed to today, and has evolved from the original single natural light such as sunlight and fire to the abundant secondary light sources invented by human beings such as incandescent lamps, fluorescent lamps, field light sources, energy-saving lamps, lasers, and new LEDs. [0003] Current secondary light sources, such as various types of lamps and backlights in displays, basically include material support structures, drive and control circuits, optical auxiliary components, and illuminants. Taking the new high-power LED lamps as an example, it is mainly composed of the following parts: heat dissipation support structure, printed circuit board, ...

AI Technical Summary

Problems solved by technology

The common problems of this kind of LED lamps are: a single LED generates a lot of heat, which causes its lifespan to decrease. Due to the packaging process, there are disadvantages of inconsistent brightness and poor uniformity among white LEDs. The color of the LED itself, you must replace the LED if you change the color, the brightness of the LED itself is not uniform, the color decay period is inconsistent, etc.

However, due to the small number of LEDs, the brightness of this type of lamp is low; the combination of phosphor powder, glass and plastic increases the content of phosphor powder and increases the cost of this lamp; in the utility model, the combination of light source and three materials , which limits the size of LED lamps, it is also difficult to achieve good lighting and optical effects

[0006] Another example is the invention patent CN200710072829.2CN, which proposes several methods to solve the defects of existing white light LEDs. Although the film application method improves the defects of white light LEDs, the corresponding inventive structure is not well combined with optical design. Moreover, the structure is single, the use is not flexible enough, it cannot be conveniently used on existing lamps, and there is a limitation in the scope of application, which cannot meet the wide application of existing various types of LED lamps.

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