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Three-color LED lamp bead and LED street lamp using same

A technology of LED lamp beads and LED street lamps, which is applied to circuits, circuit layouts, components of lighting devices, etc., can solve the problems of storage space, high management pressure, low resource utilization, and large lamps and lanterns. Pressure, lower production cost, uniform effect of light divergence

Pending Publication Date: 2020-01-14
ZHEJIANG ALITE LIGHTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the above-mentioned LED street lamps in the prior art larger in volume and higher in manufacturing cost, and the resource utilization rate is low because some lamp beads are often in an idle state.
At the same time, for manufacturers and users, it is necessary to reserve two colors of lamp beads (cold light lamp beads, warm light lamp beads) for assembly or maintenance and replacement, resulting in great pressure on storage space and management

Method used

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  • Three-color LED lamp bead and LED street lamp using same
  • Three-color LED lamp bead and LED street lamp using same
  • Three-color LED lamp bead and LED street lamp using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In the prior art, such as a Chinese patent disclosed an LED street lamp that automatically changes colors according to the ambient temperature, the application number is 201110201543.6, which includes LED lamp bead components, dimming controllers, temperature sensors, and intelligent controllers, wherein each LED The lamp bead assembly is composed of LED lamp beads of the same color in series or in parallel, and multiple LED lamp bead assemblies of different colors from cool to warm colors are integrated together to form a street light board. Each lamp bead can only emit light of one color. For example, when it needs to emit cold light, the lamp bead with warm color light is in a power-off and idle state, and vice versa. For this kind of street lamp, if the required light intensity is 50w, and the luminance of a single lamp bead is 1W, it needs to be equipped with at least 100 lamp beads, of which 50 alone emit cold white light and 50 alone emit yellow light. When emitt...

Embodiment 2

[0054] Compared with Embodiment 1 in this embodiment, when the street lamp is working, the line mediation unit controls the input current to the second line, that is, after the second conductive group 22 is energized, the second phosphor layer 72 cooperates with the second chip 52 to make the lamp The bead emits yellow light; taking the luminous brightness of the aforementioned three-color LED lamp bead as 1W as an example, the current of the second line is 350mA, the voltage is 3v, the current of the first line is 0, and the light emitted by the street lamp is yellow light.

[0055] at the same time as Figure 7 Shown is the spectrum diagram of the yellow light emitted by the three-color LED lamp beads in this embodiment, the peak wavelength is 581.7nm, and the color temperature of the light source is 3097K.

Embodiment 3

[0057] Compared with Embodiment 1 in this embodiment, when the street lamp is working, the line mediation unit controls the input current to the first line and the second line at the same time, that is, after the first conductive group 21 and the second conductive group 22 are energized, the The cold white light and yellow light mixed together form yellow and white light. Taking the luminance of the aforementioned three-color LED lamp bead as 1W as an example, the current of the first line is 175mA, the voltage is 3v, the current of the second line is 175mA, and the voltage is 3v, that is It is equivalent to two 0.5w chips to achieve the effect of 1w.

[0058] The street lamp eventually glows a yellow-white light.

[0059] at the same time as Figure 8 Shown is the spectrum diagram of the yellow-white light emitted by the three-color LED lamp beads in this embodiment, the peak wavelengths are 451.6nm and 575.9nm, and the color temperature of the light source is 4359K.

[006...

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Abstract

The invention belongs to the field of LED illumination, and relates to an LED lamp bead capable of displaying three colors and an LED street lamp using the lamp bead. The lamp bead comprises a support; two conductive groups, namely a first conductive group and a second conductive group, are arranged in the support in parallel at an interval; a first chip and a second chip are respectively mountedon the first conductive group and the second conductive group and are connected through a gold wire, and a first fluorescent powder layer and a second fluorescent powder layer respectively cover the first chip and the second chip; after the first conductive group is electrified, the first fluorescent powder layer cooperates with the first chip to enable the lamp bead to emit cold white light; after the second conductive group is electrified, the second fluorescent powder layer cooperates with the second chip to enable the lamp bead to emit yellow light; and when the first conductive group andthe second conductive group are electrified simultaneously, the lamp bead emits yellow-white light. The size of the three-color LED lamp bead is the same as that of a common lamp bead in the market, and the space in the lamp bead support is fully utilized; two blue light chips are distributed in parallel and correspondingly coated with the two kinds of fluorescent powder, so that the effect of emitting light sources with three color temperatures is achieved, and three purposes are achieved through one lamp.

Description

technical field [0001] The invention belongs to the field of LED lighting, and relates to an LED lamp bead capable of displaying three colors and an LED street lamp using the lamp bead. Background technique [0002] LED (Light Emitting Diode) is a semiconductor light-emitting device based on the principle of P-N junction electroluminescence. It has the advantages of high electro-optic conversion efficiency, long service life, environmental protection and energy saving, and small size. It is known as the 21st century green lighting source. If it can be applied to the field of traditional lighting, it will have a very significant energy-saving effect, which is of great significance in today's increasingly tense global energy sources. LED street lights have the advantages of energy saving, environmental protection and high reliability, and have been more and more widely used. [0003] With the development of social life, people are no longer satisfied with LED light sources wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/50H01L25/13F21V19/00F21V23/00F21W131/105F21Y115/10F21Y113/13
CPCF21V19/001F21V23/005F21W2131/103F21Y2113/13F21Y2115/10H01L25/13H01L33/504
Inventor 陈宏伟
Owner ZHEJIANG ALITE LIGHTING CO LTD
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