【 Weak current College 】 LED luminescence Word use FAQ solution 】

LED luminescence Word (CG) is led as light source produces luminescence font. LED luminous Word to text or logo appearance forms, installed in the building at the top or wall, the use of led light source, selected as the led chip, using control system, text or logo for dynamic video control-unique design make the traditional outdoor advertising have entirely new possibilities, its color richness far beyond the limitations of traditional neon, coupled with the relative power saving features, as well as led life long, sharp and reduces maintenance costs.

However, in practice often arise, headache, is summarized as follows, for reference purposes only:

A short life, LED: formal manufacturers LED the life of a theory generally 80000 hours or so. And now a lot of letters not used enough for a year and began to frequently replace the LED module, to customers and advertising providers to bring a lot of trouble and economic loss.
Workaround:
Purchase formal producers qualified LED single LEDs tablets (requires manufacturers to provide quality parameters description), own production module. Never in the electronic market for the sake of cheap buy LED single LEDs grain or have made a good module. If you need to purchase a module, you should see the module on a few resistors, install a resistance of modules it is best not to use. Resistance in the module in the current role is easily fever. Long continuous use, once burned, the modular resistance will not light up. LED light is generally not bad. Do not throw out the module, simply replace a same resistance of resistance to normal use. This allows for the production unit cost savings. In order to reduce the hassle and cost-saving, preferably installed two resistance of modules. In addition, to make a module of the supplier of production facilities to be understanding and see you in the production module for anti-static facilities. If there are no additional anti-static facilities in use even if the resistance is not burned, LED lights are also very easily be breakdown damaged.

B, color decay very fast: just installed good letters issued in pure bright color, use less than a year, obviously, the dark color. Is the font to become red not green-red, green, not very ugly.
Workaround:
LED lamp safe use current 20 Ma culture in General, more than this number, although the brightness increases, but color decay noticeably faster. Therefore, in the purchase has been assembled for LED modules must test its current value. Less than 20 Ma Pui brightness is not enough, more than 22 Ma Pui impact LED life, so that the color fade speed.

C, colour unevenness, color clear: mainly in the plain white LED production of large letters. In the performance of a single module Assembly is not obvious, the entire font Assembly complete, chromatic aberration is clearly evident, the entire literal like maps, a piece of white, blue, yellow.
Workaround:
White LED lamps in the factory must undergo simultaneous color separations (no separations after UV LED some light is white, there's a partial blue, yellow), spectro separations instrument is expensive, there is no small factory in general such devices, production of white light are generally carried out by the manufacturers, because color is not the product of their own plant by separations will not be so careful. Some small factory simply won't light color separations. They generally are lower prices to customers. So when purchasing white led not just for the sake of cheap, be sure to purchase the same manufacturer, same time, same colors, led luminotron single particle light or modules to produce the same batch of letters.

D, part of the stroke, the overall font suddenly does not light or light is not lit when: letters in use for some time, in part or in whole font light flashing, began to appear when the light is not lit, until completely off. Now the market sales of luminescent modules, mostly use docking cable connection. In this way, advertising producers when installing luminescent modules easily. But there have been a number of new problems, because of the connectors in the long process from the air causing moisture erosion easy oxidation, poor contact so that, in part or in whole circuit outages or completely off, cause the font source Flash or off.
Solution:
1. make a module without connector, direct connection with copper tinned wire solder welding after activated carbon.
2. using artificial agate production closed hollow channel letters, isolated from the light and air.

E, font output power is large, energy-saving is not obvious.
Workaround:
As of adoption of a set of five LEDs LED glow of the module, so there is no change in the number of lights, and power is reduced by two fifths.