White-light LED (Light Emitting Diode) three dimensional light source module allowing light emitting in 360 degrees

Abstract

The invention discloses a white-light LED (Light Emitting Diode) three dimensional light source module allowing light emitting in 360 degrees. The white-light LED three dimensional light source module allowing the light emitting in 360 degrees is formed by a substrate, a substrate electrode bayonet, a chip, silica gel, a down-conversion fluorescence device and a down-conversion fluorescence device bayonet; the down-conversion fluorescence device is formed by base materials and fluorescent powders; the substrate is in regular three-surface or regular four-surface or regular six-surface or regular eight-surface column-shaped structure; the electrode bayonet is arranged at one end of the substrate; the chip is fixed on the lateral side of the substrate in an integrated packaging mode; the down-conversion fluorescence device which is far from the chip is arranged on the outermost side of the module; the down-conversion fluorescence device bayonet is arranged at one end of the fluorescence device; the fluorescent powders are yellow fluorescent powders or yellow red composited fluorescent powders or yellow, red and green composited fluorescent powders which are in same base materials. The white-light LED three dimensional light source module allowing the light emitting in 360 degrees has the advantages of reducing production processes of a whole lamp, reducing production costs, large in light emitting angles and high in color rendering index, reducing contact thermal resistance of the chip, being benefited for integral heat dissipation of a light source, effectively reducing use temperature of the fluorescent powders and improving spectrum consistency and reliability during long-term using process.

Description

technical field [0001] The invention relates to a white LED three-dimensional light source module that emits light at 360°, and belongs to the field of semiconductor lighting. Background technique [0002] There are four main ways for LEDs to produce white light: (1) blue light chips excite yellow phosphors; (2) red, green, and blue chips directly mix light; (3) blue light chips excite red and green phosphors; (4) The UV chip excites red, green and yellow phosphors. At present, the more common method is to excite yellow phosphor powder by blue LED, and the light source prepared by it has high reliability and high efficiency. [0003] In the existing technical field, the white light LED light source mainly has the following problems: [0004] (1) The spectral saturation is low, and the color rendering index is not high. At present, the improvement method in the industry is mainly to dope red and green phosphors. However, most of the phosphors used are red, green, and yello...

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Problems solved by technology

[0006] (3) The packaging process of white light is the traditional way of dispensing and coating. The phosphor is directly coated on the surface of the chip. Due to the high heat generation of the chip, it will lead to the fluorescence quenching effect of the phosphor when it is heated for a long time. ; The prepared white light will also have uneven light color caused by phosphor precipitation, which will affect the visual effect

[0007] (4) The process of preparing the whole lamp in this way is mainly to say that multiple white LEDs are usually fixed on the light bar by means of a combination of single white light in series and parallel. This method increases the thermal resistance between the chip and the light bar. And cause the adverse consequences of high chip temperature; at the same time, the process is lengthy and the cost is relatively high

The luminescent lamp post described in this patent is made of a transparent glass-based or plexiglass-based PCB board combined with blue and red light chips, and the U-shaped lamp tube is also filled with nitrogen for heat dissipation and cooling, but this method can increase the light output angle. , color rendering index and heat dissipation effect, but the requirements for the process are high, the cost is expensive, and it is not suitable for practical application

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