Along with economic growth and development of AD industry,plenty AD signage products comes out,meanwhile it brings flourishing market for LED lighting source industry, thousands of AD light source products chocking up the goods shelf and lighting up any products sings.AD signages,indicators,lighting boxes,signages,Static and Dynamic display,AD machines etc.application areas from individual household to commercial bank;Fromlandmark indicator to controlling center display;From doorplate display,channeldisplay,jewelry display to construction profile ,airport,railway station,supermarket and so on different places.
There are nothing else than 2 structure modules:
First one uses dripping technology,materials includes:PVC module shell,PC board,lamp beads,cable,glue,resistance,solder paste.Stick the beads and resistance on PCB,using chip mounter;Then bonding wire and connect the cable on two PCB ends,put PCB on the PVC bottom shell,dripping epoxy resin,last step spontaneous curing.
The second one is so-called “injection module”.Sames as dripping module,difference is that it sends a PCB(with cable and beads)into injection molding machine,then wrap with PVC or ABS.
For the dripping module,the module seems fully wrapped the PCB,in fact it will result gap between epoxy resin and other arts,because of below reasons:quality of epoxy resin,operation time,environment of the material which contacted by epoxy resin,will work longer time if good waterproof function.If working under high moisture ,high temperature or raining place for long time,maybe the lifespan of the module will not exceed 3months,so structure is important;Besides,another reason is that it’s incompatible between epoxy resin and beads used silicone ，if any redundant contact when production,it will result vulcanized in the coming future so that the module cannot work regularly.In all this kind structure module ,will stop working because of structure probloem when high temperature,high moisture or a vulcanized place .
Comparing to dripping module,injection module will be easier in production controlling and it can change the viewing angle by lens ,in order to apply to different AD products.They have the same short comings with dripping modules,if any QC problem,the waterproof function will begreatly reduced,adding complicated production procedure ，low production efficiency,it rather difficult to be a eligible controller,even if comes good products,the price will be extremely expensive.
So in china,if any customer complaints happens,it will end up with nothing definites,since it’s decided by material,technology and production efficiency etc.Every supplier sold their products with margin.So among those china module manuacturers,the product wasnot so quality,because of their management level ,different kind of materialetc….
Published by Mr Gertrude F. Neumark.
Technical Director of Yayuhong Optoelectronic & Technology Co.,Ltd
There are nothing else than 2 structure modules:
First one uses dripping technology,materials includes:PVC module shell,PC board,lamp beads,cable,glue,resistance,solder paste.Stick the beads and resistance on PCB,using chip mounter;Then bonding wire and connect the cable on two PCB ends,put PCB on the PVC bottom shell,dripping epoxy resin,last step spontaneous curing.
The second one is so-called “injection module”.Sames as dripping module,difference is that it sends a PCB(with cable and beads)into injection molding machine,then wrap with PVC or ABS.
For the dripping module,the module seems fully wrapped the PCB,in fact it will result gap between epoxy resin and other arts,because of below reasons:quality of epoxy resin,operation time,environment of the material which contacted by epoxy resin,will work longer time if good waterproof function.If working under high moisture ,high temperature or raining place for long time,maybe the lifespan of the module will not exceed 3months,so structure is important;Besides,another reason is that it’s incompatible between epoxy resin and beads used silicone ，if any redundant contact when production,it will result vulcanized in the coming future so that the module cannot work regularly.In all this kind structure module ,will stop working because of structure probloem when high temperature,high moisture or a vulcanized place .
Comparing to dripping module,injection module will be easier in production controlling and it can change the viewing angle by lens ,in order to apply to different AD products.They have the same short comings with dripping modules,if any QC problem,the waterproof function will begreatly reduced,adding complicated production procedure ，low production efficiency,it rather difficult to be a eligible controller,even if comes good products,the price will be extremely expensive.
So in china,if any customer complaints happens,it will end up with nothing definites,since it’s decided by material,technology and production efficiency etc.Every supplier sold their products with margin.So among those china module manuacturers,the product wasnot so quality,because of their management level ,different kind of materialetc….
Published by Mr Gertrude F. Neumark.
Technical Director of Yayuhong Optoelectronic & Technology Co.,Ltd
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