Unbenannt 

radiates function

6:28 AM, 7.9.2011  ..  0 Kommentare  ..  Link

Single LED Bai Deng the data which examines on the aged board, the data which with fits out the LED white lamp bank lamps and lanterns get older when examines, definitely is a little comes in and goes out. This difference's size, is decided by the LED work time the electrical parameter and lamps and lanterns' design situation, as well as the lamps and lanterns use environment.

First, what LED lamp bead chooses This is very important, the LED lamp bead's quality may say that is the very important factor. Cites an example,LED Spot Lights similarly take crystal Yuan 14mil the white light section chip as representative, makes the LED lamp bead which with the ordinary epoxy resin the bottom rubber and the white light rubber and the seal glue water seal, single lightens under 30 degrees environment, 1000 hours later, weakens the data to fade 70% for the light; If fades lowly with D kind the glue water seal, under the similar aged environment, thousand hour light fades is 45%;

If C kind fades lowly the glue water seal, under the similar aged environment, thousand hour light fades is 12%; If B kind fades lowly the glue water seal, under the similar aged environment, thousand hour light fades for - 3%; If A kind fades lowly the glue water, under the similar aged environment, thousand hour light fades for - 6%.

Why the different package process will cause how the big difference? A most main reason lies in the LED chip to be sensitive to heat. Is occasionally short in the time to be heated surpasses more than 100 degrees, that is unimportant, feared that feared is under for a long time the high temperature, is to the LED chip one kind of greatest harm.

Generally speaking,LED Flood Lights the ordinary epoxy resin's thermal conductivity is very small, therefore, when the LED chip lightens works, the LED chip must launch the quantity of heat, but ordinary epoxy resin capacity of heat transmission is limited, therefore, when you exterior survey from the LED photo source the LED support's temperature has 45 degree time, the LED Bai Dengnei chip center temperature has the possibility to surpass 80 degrees.

The LED temperature node is 80 degrees actually, that when the LED chip works in the festival warm temperature, is unusual the suffering, this sped up the LED photo source aging. When the LED chip is working, the central temperature has had 100 degrees high temperatures, it may 98% lead immediately through the support pin the quantity of heat, thus reduced quantity of heat to its injury. Therefore,LED Ceiling Lights the LED lamp bead support temperature is 60 degree time, its chip center temperature possibly is only 61 degrees. From the above data may look that what package process chooses the LED lamp bead, decided directly the LED lamps and lanterns' light fades the situation.

Next, LED photo source working conditions temperature According to the single LED photo source aging's time data, the LED photo source, if only then lightens the work, simultaneously, it locates the ambient temperature is 30 degrees, that time the single LED photo source work's support temperature will not surpass 45 degrees. At this time, this LED life can be very ideal.

If has 100 LED photo sources simultaneously to lighten the work, between them the gap is only in the 11.4mm situation, that the lamp piles the peripheral LED photo source's support temperature possibly will also not surpass 45 degrees, but the lamp will pile the middle these LED photo source to have the possibility to achieve 65 degrees high temperatures. At this time, test on the LED photo source is.Patch Panel Manufacturer Then, will gather in the middle these LED photo source, the theory polishing fades will be quick a spot, but the lamp will pile the peripheral LED photo source, the light will fade will be slow a spot.

But if the LED lamp bead is separated by above 25mm, that they diverge mutually the quantity of heat that will not agglomerate, at this time, each LED lamp bead support's temperature should be short below 50 degrees, quite will favor LED the normal work. If the LED work's environment is in the quite cold place, all year average temperature is only possibly about 15 degrees, or is smaller,Ïø´­ then regarding LED, the life is longer.

Or, LED works, side has a small fan to blow, helps it to scatter the steam, this appearance is also very has the help to the LED life. Everybody should want in any case to know that LED is sensitive to heat, the temperature is higher, the LED life is shorter, the temperature is lower, the LED life is longer. The LED ideal operating temperature is certainly in negative 5 arrive at between the zero degree. But this basically is impossible.

Therefore, we understood after LED lamp bead ideal operational parameter, as far as possible in designs lamps and lanterns' time, strengthens the heat conduction, radiates function. The temperature is in any case lower, the LED life is longer.


Einen Kommentar schreiben 

{ Vorherige Seite }   { Page 27 von 52 }   { Nächste Seite }

Über mich

Home
Mein Profil
Archiv
Freunde
Mein Fotoalbum

Links


Kategorien


Frühere Beiträge

curative effects
Professor
parts minima
cooperate together
classic advertisement

Freunde