High-power white-light LED light source based on transparent ceramic fluorescent tube

Abstract

The invention relates to a high-power white-light LED light source based on a transparent ceramic fluorescent tube, and the LED light source consists of a metal thermal conducting column (1), a blue light chip (2), the transparent ceramic fluorescent tube (3), a high-transmittance packaging housing (4), a cooling fin (5), and an electrode (6). The blue light chip (2) is pasted on the metal thermal conducting column (1), and the transparent ceramic fluorescent tube (3) is disposed outside the metal thermal conducting column (1). The transparent ceramic fluorescent tube (3) and the metal thermal conducting column (1) are disposed at the center of the upper end face of the cooling fin (5). The high-transmittance packaging housing (4) is reversely buckled on the upper end face of the cooling fin (5), and a heat dissipation material is disposed in the high-transmittance packaging housing (4). The electrode (6) is located exactly below the cooling fin (5), and is connected with the cooling fin (5) through a connecting line, and the other end of the electrode (6) is connected with an external power supply. The light source employs the technology of remote excitation, employs the transparent ceramic fluorescent tube (3) to replace fluorescent powder, and enables the transparent ceramic fluorescent tube (3) to be separated from the blue light chip (2). The prepared LED light source is good in light uniformity, is easier for heat dissipation, and can be used as a large-power LED light source.

Description

technical field [0001] The present invention relates to a high-power white LED light source based on remote excitation technology, in particular to a high-power white LED light source based on a transparent ceramic fluorescent tube, which uses a transparent ceramic fluorescent tube to replace the fluorescent powder directly coated on the blue chip , the technical idea of ​​separating it from the Blu-ray chip. Background technique [0002] White light LED light sources have gradually replaced incandescent lamps and fluorescent lamps, and are widely used in people's daily life. At present, there are two main ways of emitting light from white LED light sources. The white light LED light source widely circulated in the market mainly uses monochromatic light and phosphor powder to excite to form white light. Compared with incandescent lamps and fluorescent lamps, white LED light sources have a longer service life, stronger safety and reliability, and are more environmentally fr...

AI Technical Summary

Problems solved by technology

This technology coats the phosphor powder on the lampshade to avoid direct contact between the phosphor powder and the blue light chip, but this technology also has disadvantages such as astigmatism loss, uneven light intensity distribution, and poor light uniformity.

Therefore, the power of the current white LED light source is generally small, even if there is a high-power LED light source, the price is high, and the development and application are limited.

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