LED issiqlik tarqalishi texnologiyasini ishlab chiqish yo'nalishi
As we all know, LED lamps need good heat dissipation conditions to ensure the normal use and service life of LED. The heat dissipation of LED lighting has always been the most difficult castle in the industry. Which direction will LED heat dissipation technology develop in the future?
Active cooling:
By adding micro fan and increasing convective heat dissipation, the node temperature of LED can be effectively reduced.
Advantages: the heat dissipation effect is remarkable, because the heat dissipation of LED lamp mainly depends on convective heat dissipation, accounting for about 80 percent
Disadvantages: A. noise: there will be noise after adding the fan, which may affect the normal work, rest and entertainment. B. service life: the bearing life of the general fan is difficult to reach the long service life of 100000 hours as that of the LED lamp. C. cost: increasing the active heat dissipation will increase the product cost accordingly. In particular, long-life micro fans are installed.
Passiv sovutish:
Increase radiation and convective heat dissipation through the design of LED lamp heatsink materials and structures.
Afzalliklari: past ovozsiz xarajat
Kamchiliklari: issiqlik tarqalish effekti radiatorning strukturaviy dizayniga bog'liq va yanada etuk dizayn texnologiyasini talab qiladi.
Advantages and disadvantages of materials for LED heatsink:
Aluminum
Afzalliklari: hozirgi vaqtda bozordagi asosiy oqim issiqlik tarqalishi uchun alyuminiy quyma issiqlik qabul qiluvchidan foydalanish bo'lib, u arzonligi, engilligi, yaxshi issiqlik tarqalish ko'rsatkichi, atrof-muhit tomonidan korroziyaga tushishi va aşınması oson emas{{0} } chidamli.
Kamchiliklari: yomon izolyatsiya. Issiqlik moslamasiga elektron plata (masalan, LED lampochka va chiroq trubkasi) o'rnatilgan bo'lsa, elektr toki urishi yoki elektron plataning qisqa tutashuvi natijasida chiroq shikastlanishining oldini olish uchun qo'shimcha izolyatsiyalash choralari ko'riladi; issiqlik tarqalish hajmi katta, bu mahsulotni miniatyuralashtirishga yordam bermaydi;
Seramika issiqlik tarqalishi:
The price is relatively low, corrosion resistance and good insulation performance. If there is a circuit board installed inside the heat sink, it does not need too much insulation treatment to meet the safety performance requirements of the product. However, the heat dissipation performance is worse than that of aluminum radiator; and it is east to broken.
Copper
Its thermal conductivity is good. For the heatsink with the same volume, copper can bear the heat dissipation demand of higher power LED than aluminum, which is conducive to the miniaturization of products. However, the insulation of copper is poor and additional insulation treatment is required; The price is higher.
