Pre-packaged LED illuminating lamp and manufacture method thereof

A technology of LED lighting lamps and LED lamps, which is applied in the direction of lighting and heating equipment, lighting devices, chemical instruments and methods, etc., can solve the problems of decreased luminous efficiency of phosphor powder, incomplete luminous chromaticity, and affecting the life of LEDs, etc., to achieve It is convenient to control the size and phosphor content, ensure high consistency of performance, improve production efficiency and product qualification rate

Inactive Publication Date: 2009-09-09
NANJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the above-mentioned LED packaging process, there are several key problems: first, it is difficult to keep the concentration of the phosphor powder consistent from beginning to end when dispensing glue, because the phosphor powder maintains a certain particle size in the binder, and the fluorescent powder The powder has a certain weight, and its density is much larger than that of the binder. Therefore, although the binder is relatively viscous, the phosphor will still slowly settle in it, and the time for degassing is longer, which indirectly promotes the phosphor powder. Therefore, when dispensing glue, the concentration of phosphor powder in the glue dispensed at the beginning is higher, and the concentration is lower as the glue is dispensed, which leads to different batches or even LEDs manufactured in the same batch. In the end, the factory must classify the manufacture

Method used

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  • Pre-packaged LED illuminating lamp and manufacture method thereof
  • Pre-packaged LED illuminating lamp and manufacture method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Example 1. Weigh 2g of YAG fluorescent powder and 5g of silica gel, mix them evenly, apply a layer of 0.2mm thick film by screen printing method, put it into a vacuum dryer and heat and cure at 150°C for 30 minutes, take out the film according to the production method It is required to cut into a film of a certain size, apply a little silica gel on one side of the light-transmitting lens, then paste the cut film on it, put it in a vacuum desiccator and heat and cure at 150°C for 30 minutes before use. Fix the chip on the bracket, solder the circuit, then cover the lens, inject silica gel into the gap in the middle, put it in a vacuum desiccator and heat and cure at 150°C for 1 hour, then fix 5 independent LED lights in the lampshade, and connect them well circuit, and finally the light-transmitting mirror pasted with phosphor powder and silicone film is fixed on the lampshade, and the side pasted with the film is fixed on the inside, thus manufacturing a pre-packaged LED...

Embodiment 2

[0027] Embodiment 2. Weigh 5gYAG fluorescent powder, 10gLiEuW 2 o 8 Phosphor powder and 20g epoxy resin, mix them evenly, apply a layer of 0.4mm thick film by screen printing method, put it in a vacuum dryer and heat and cure at 150°C for 60 minutes, take out the film and cut it into a certain size according to the production requirements Apply a little epoxy resin on one side of the light-transmitting mirror, then paste the cut film on it, put it in a vacuum desiccator and heat and cure it at 150°C for 10 minutes, and set it aside. Fix the chip on the bracket, solder the circuit, then cover the lens, inject silica gel into the gap in the middle, put it in a vacuum desiccator and heat and cure at 150°C for 1 hour, then fix 40 independent LEDs in the lampshade, and connect the circuit. Finally, the lens pasted with phosphor powder and epoxy resin film is fixed on the lampshade, and the side pasted with the film is fixed inside, thus a pre-packaged LED lighting lamp is manufact...

Embodiment 3

[0028] Embodiment 3. Weigh 20gYAG fluorescent powder, 10gSr 2 Si 2 N 8 :Eu 2+Fluorescent powder, 40g of silica gel, mix it evenly, apply a layer of 0.4mm thick film by screen printing method, put it in a vacuum dryer and heat and cure at 120°C for 120 minutes, take out the film and cut it into a film of a certain size according to the production requirements film, apply a little silica gel on one side of the light-transmitting mirror, and then paste the cut film on it, put it in a vacuum desiccator and heat and cure it at 150°C for 30 minutes, ready to use. Fix the chip on the bracket, solder the circuit, then cover the lens, inject silica gel into the gap in the middle, put it in a vacuum desiccator and heat and cure at 150°C for 1 hour, then fix 100 independent LEDs in the lampshade, and connect the circuit. Finally, fix the lens with the fluorescent powder and the silicone film on the lampshade, and fix the side with the film on the inside, so that the pre-packaged LED l...

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PUM

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Abstract

The invention provides a pre-packaged LED illuminating lamp which comprises independent LED lamps 8, a prefabricated film layer 7 of fluorescent powder and binding agent, a lampshade 9 and a transmission mirror 6, wherein at least one independent LED lamp is fixed in the lampshade; the transmission face of the lampshade is provided with the transmission mirror, and the prefabricated thin layer of fluorescent powder and binding agent is bonded inside the transmission mirror; and the independent LED lamps 8 do not contain the fluorescent powder. The LED illuminating lamp manufactured by the packaged structure has high consistency and uniformity of different transmission performances, simplifies the production technique and enhances the production efficiency simultaneously. The packaged structure can be widely applied to the production of various LED illuminating lamps.

Description

technical field [0001] The invention relates to a prepackaged LED lighting lamp and a preparation method thereof, belonging to the field of solid lighting. Background technique [0002] As a new type of solid light source, LED (Light Emitting Diode) develops rapidly because of its small size, fast response, good shock resistance, long life, especially energy saving and environmental protection. In recent years, it has been widely used in large-screen display, traffic signal lights, landscape lighting, street lighting and other fields. [0003] Due to technological development, the current mainstream LED manufacturing method is blue light chip + yellow phosphor powder. The specific process is: first fix the chip on the bracket, connect the circuit; then weigh the phosphor powder and binder according to a certain proportion, Mix the two together and put them in a vacuum desiccator to expel air bubbles (it takes at least 30 minutes), then apply the mixture of phosphor powder a...

Claims

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Application Information

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IPC IPC(8): F21S2/00F21V19/00F21V13/00F21V9/10C09K11/08H01L33/00F21Y101/02F21K9/20F21K9/90F21V9/40F21Y115/10
Inventor 王海波张瑞西黄如喜印琰谢晔
Owner NANJING UNIV OF TECH
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