A white LED light source with a blue chip packaged on the inner wall of a transparent ceramic fluorescent tube

Abstract

The invention relates to a white LED (Light-Emitting Diode) light source of a transparent ceramic fluorescent tube packaged with blue chips on an inner wall thereof. The white LED light source is composed of the transparent ceramic fluorescent tube (1), a high transmittance packaging shell (2), an electrode (3), a cooling fin (4) and blue light-emitting bars (5), wherein the blue light-emitting bars (5) are adhered to the inner wall of the transparent ceramic fluorescent tube (1); the transparent ceramic fluorescent tube (1) is located right on the cooling fin (4) and placed in the high transmittance packaging shell (2); the high transmittance packaging shell (2) is inverselybuckled on the upper end face of the cooling fin (4); the electrode (3) is located under the cooling fin (4); one end of the electrode (3) is connected with the cooling fin (4) via a connection line and the other end of the electrode (3) is connection with an external power source. As the inner wall adhesion technology is adopted, the white LED light source is efficient and concise, the light emission is uniform; as the transparent ceramic fluorescent tube per se has excellent heat-conducting property and a big cavity volume is reserved between the transparent ceramic fluorescent tube and the high transmittance packaging shell, the heat dissipation effect is greatly improved. Since the remote excitation technology is adopted, the light emission is more uniform, the light diffusion loss is reduced and the light-emitting efficiency is improved.

Description

technical field [0001] The invention relates to an LED illuminating lamp and an LED light-emitting tube in an LED light-emitting device, in particular to a white LED light source in which a blue-light chip is packaged on the inner wall of a transparent ceramic fluorescent tube; it is used as a discrete LED light-emitting device and an LED illuminating lamp. Background technique [0002] White LED light sources are widely used and can be used in parks, workshops, large supermarkets, gymnasiums, mining areas and other places. The most common way for LEDs to produce white light is to use a blue chip to excite phosphors, which is achieved by mixing the remaining blue light with the yellow light emitted by the phosphors. Phosphor powder is usually evenly mixed with silica gel and coated directly on the surface of the blue chip. However, because the light emitted by the LED chip is reflected and scattered on the surface of the phosphor, the light returns to the chip and is absorb...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a white LED light source with a blue chip packaged on the inner wall of a transparent ceramic fluorescent tube to solve the problems of difficult heat dissipation and low light efficiency in traditional LED lamps. Increase the output luminous flux of LED and improve the uniformity of output light

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