Txoj kev loj hlob ntawm LED tshav kub dissipation technology
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.
Passive cua txias:
Increase radiation and convective heat dissipation through the design of LED lamp heatsink materials and structures.
Qhov zoo: tus nqi qis qis
Disadvantages: lub tshav kub dissipation nyhuv nyob ntawm tus qauv tsim ntawm lub radiator thiab yuav tsum tau ntau mature tsim technology.
Advantages and disadvantages of materials for LED heatsink:
Aluminum
Qhov zoo: tam sim no, lub ntsiab hauv kev ua lag luam yog siv aluminium casting kub dab dej rau cov cua sov dissipation, uas yog tus cwj pwm los ntawm tus nqi qis, lub teeb yuag, kev ua haujlwm zoo thaum tshav kub kub dissipation, tsis yooj yim rau corroded los ntawm ib puag ncig thiab hnav {{0} }tiv.
Disadvantages: tsis zoo rwb thaiv tsev. Yog tias lub rooj tsav xwm hauv Circuit Court (xws li LED qhov muag teev thiab lub teeb lub teeb) raug teeb tsa hauv lub dab dej kub, kev ntsuas hluav taws xob ntxiv yuav tsum raug coj los tiv thaiv hluav taws xob poob siab lossis teeb pom kev puas tsuaj los ntawm Circuit Court board luv luv; lub tshav kub dissipation ntim yog loj, uas yog tsis conducive rau cov khoom miniaturization;
Ceramic tshav kub dissipation:
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.
