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LED project-light lamp is easy bad reasons and assembly how to prevent

Return list source:Krgled view:- date:2016-06-30 09:42:00【Large Middle Small

LED project-light lamp series, the damage is the most likely cause of general: light bead death light and power to burn, and lead to damage of the two reasons besides the cause of the material itself, under normal use, the biggest is probably ooze water, and water where into?

There are three places:

The eye of a needle, shell, and the naked eye could not find, project-light lamp and spray tests only, but the reason is less, do not make key analysis;

Second, the shell gap between top and bottom cover, which has relations with the shell process and assembly, in addition to the shell itself reason, when assembling sealing ring must be installed in place, top and bottom cover screw locking;

Three, from the outlet hole water seepage, this is our factory most of the identity, reasons for hole didn't lock screw, wire line diameter, internal seal didn't prepare, install and use force pulling the qualification process, cause loose outlet, outlet seal glue sealing mechanism, from the outlet hole ooze water, water into the warp core driver inside, into the lamp bead ontology periphery, cause drive burn, into the lamp bead peripheral, shorting part of lamp bead forming overload burning lamp, as well as electrolytic electrolytic off the lamp bead foot, etc.

Besides from the outlet hole water penetration, surface cover through the weathered may ooze water, cover after weeping may directly into the lamp bead peripheral, how to prepare for this one? Believe that everyone is clear, surface cover lamp beads are first installed lens bracket, then pouring waterproof glue; Here is simple said this steps need to be aware of problems, first of all suggest choose conjoined lens (this is the cover after the water seepage water also can not enter the lamp bead peripheral, but if the black potting glue quality is bad, bubble water might ooze water for a long time, so pouring sealant suggest to buy a good, density larger); In order to achieve a good heat dissipation, need between aluminum plate and shell uniform coating a layer of thermal silicone (suggest using coefficient of heat transfer of above 1.5); Beat silicon grease, and if the plate and shell contact is bad, the effect is not good, need to use screws to aluminum plate and shell lock; Bracket with lens before need to call 705 glue in the figure below white circles have the effect of sealing lamp bead and fixed bracket, here must be sealed, or subsequent pouring sealant when they enter the internal stent, into the lamp bead on the ontology, the thickness of the vinyl keep in 5 to 7 mm, bracket height is 14 mm in general.

Potting vinyl when it is important to note that try not to spill onto the casing on the lamp body, lens, if color is not the same as bracket color of glue, glue onto scaffolds, glue can't be too thick nor too thin in 5 to 7 mm thick, namely (mixing glue must according to the proportion, the ratio of A and B can't switch, etc., before mixing, need to mix A and B agent, after mixing to stir fully, make A B agent full reaction, after the glue dried, first clean the lens mount, cover glass, then pretend to lock the cover, cover seal should be put in place, at the same time, screw to lock, electric group of torsion transferred to 10 ~ 12 kg force, there can be no gap between top and bottom cover.

Drive outside screw: screw for lock is not tight must change to lock screw, here not tighten, it is very easy to leak, even waterproof inside as well, but the permeability of water, can affect the product smooth effect, with water to form water vapor and even water, glow, luminous intensity will become weak, also may produce glare, reflection refraction, etc.

Finally aging before cleaning, packaging, the need for product testing, specific test steps:

a, mains normally on 2 ~ 4 hours.

Second, 265 plus or minus 5 v high impact test 60 plus or minus 10 minutes;

Three, three seconds, open circuit test 500 plus or minus 50 times; 4, mains normally on 60 plus or minus 10 minutes.