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Tubular LED (Light-Emitting Diode) light source

An LED light source, tubular technology, applied in the field of LED light source structure, can solve the problems of decreased light utilization rate, poor visual adaptability, uneven light illumination, etc., to save the process, ensure uniformity, and improve the effect of light efficiency

Inactive Publication Date: 2012-05-30
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the luminous efficiency of high-power white LEDs has reached 100lm / W, and the luminous efficacy of stable products is also 90lm / W. However, LEDs are point light sources, and the light emitted has the characteristics of uneven illumination and poor visual adaptability.
At present, many manufacturers use the form of fluorescent tubes to make LED tube-type light sources, and arrange the LEDs on the PCB strips. However, this method will cause each LED to be clearly visible when the lamp is lit.
In order to solve the above problems, some manufacturers make the tube-shaped glass tube outside the LED into a frosted type, but these methods will lead to a decrease in the utilization rate of light.

Method used

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  • Tubular LED (Light-Emitting Diode) light source
  • Tubular LED (Light-Emitting Diode) light source
  • Tubular LED (Light-Emitting Diode) light source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 and 2 As shown, a tubular LED light source includes a white light LED11, a light guide rod 13, and a light scattering column 12 composed of light reflecting particles arranged along its axial direction in the central area of ​​the light guide rod 13 is used to fix the white light. The heat dissipation substrate 14 of the LED11, and the bracket 15 for fixing the whole structure.

[0028] In this embodiment, the outer diameters of the light scattering column 12 and the light guide rod 13 are circular,

[0029] The colorless and transparent parts of the two end faces of the light guide rod 13 are evenly provided with small LED grooves or holes, the size of which matches the white LED 11, and the bottom surface is plated with a high reflection film for visible light except for the LED grooves or holes.

[0030] The material of the colorless and transparent part of the light guide rod 13 and the bonding material of the light scattering column 12 can be PMM...

Embodiment 2

[0039] Such as image 3 As shown, a tubular LED light source, the basic packaging structure is similar to that of Embodiment 1, the difference is that the shape of the light scattering column 12 is selected as a square, and the light scattering particles are titanium dioxide particles with a particle size of 1 μm, so the white LED 21 The alignment has also changed.

Embodiment 3

[0041] Such as Figure 4 As shown, a tubular LED light source, the basic packaging structure is similar to that of Embodiment 1, the difference is that the shape of the light scattering column 12 and the outer diameter of the light guide rod 13 are regular hexagonal, and the light scattering particles are two The zirconia particles have a particle size of 100 μm, so the arrangement of the white LEDs 31 is also changed.

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Abstract

The invention belongs to the field of photoelectrons, and discloses a tubular LED (Light-Emitting Diode) light source, which comprises LEDs for emitting white light and a cylindrical transparent light-conducting stick of a regular appearance, wherein the LEDs are sleeved into LED holes formed on the two end faces of the light-conducting stick in a matching way; the central region of the light-conducting stick is provided with a light scattering column consisting of light scattering particles along the axial direction of the light-conducting stick; and the light-conducting stick is a cylindrical, elliptical or regular polyhedral prism. In the tubular LED light source provided by the invention, a way of adopting a white-light LED lamp strip in the conventional tubular LED light source is eliminated, LED side face illumination is adopted, and the uniformity of a light emitting surface can be ensured under the total reflection action of the outer surface of the light-conducting stick and the scattering action of the light scattering column. Due to the adoption of the tubular LED light source, procedures are eliminated, cost is reduced, and the light efficiency is increased greatly.

Description

technical field [0001] The invention relates to an LED light source structure, in particular to a tubular LED light source for lighting and screen display. Background technique [0002] The LED light source has the characteristics of low power consumption and long service life. At present, the luminous efficiency of high-power white LEDs has reached 100lm / W, and the luminous efficacy of stable products is also 90lm / W. However, LEDs are point light sources, and the light emitted has the characteristics of uneven illumination and poor visual adaptability. At present, many manufacturers use the form of fluorescent tubes to make LED tube-type light sources, and arrange the LEDs on the PCB strips. However, this method will cause each LED to be clearly visible when the lamp is lit. In order to solve the above problems, some manufacturers make the tube-shaped glass tube outside the LED into a frosted type, but these methods will lead to a decrease in the utilization rate of light....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21V13/00F21V19/00F21V17/00F21V29/00F21Y101/02F21V29/70
Inventor 周明杰马文波陈贵堂
Owner OCEANS KING LIGHTING SCI&TECH CO LTD