|
News - About the LED Tube
light application
|
-
About the LED Tube light application
Glare lighting of office illumination is one of very important target.
In fact, glare-light is lamps and lanterns, not the light source. T8
LED Tube light will be accepted easily by everybody. The reference
fluorescent tube, T8 LED Tube light has a more uniform light, rather
than adopts transparent cover in the beginning, saw directly LED
creates dazzlingly, thus forms dazzles. In view of the different
application, solving dazzles should put into making the lamps and
lanterns design, not depending on the light source. So the uniform
light and the transparent two product plan may take civil, but uses the
different situation.
It is right, illumination products not only have unique design, but
also have the good capacity of production guarantee(many manufacturers
ignore this point, therefore product reliability need many aspects
guaranteed and a link's careless will make our diligently have a great
discount.
Diffuse heat of LED
is junction temperature. Generally, there is no way to test the
junction temperature, what we should do? We know that high efficiency
LED will give a parameter thermal resistance, the same to the LED
paste. Therefore we measure the base pin temperature and the thermal
resistance when we make the product test (this come from company
experienced accumulated), we can know the Led junction temperature
range. At present, As I know there are not measurement the LED chip of
junction temperature in application manufacturer. Upstairs, if you have
any good way, we can share together.
Continue to talk about heat dissipation:
Good heat dissipation, the first, making LEDs’ heat diffuse, that is to
say, this is a advantage which the heat more easily transmit to PCB, if
adopting patch replace plug (other advantages are not heat dissipation,
so we discuss later). Secondly, how the heat will quickly export PCB,
which need a bit of experience in the thermal conductivity of PCB
design, such as, increasing solder pad and so on. In principle, one is
reduce the PCB itself heat flow, anther is reduce thermal resistance
between the PCB and the case. Thirdly, how to make cover of heat
conduction to the environment, this not only consider the area of heat
dissipation, but also the shape of your products and the ways and
environment of using.
If you can consider above all during T8 thermal design, T8
led tube of thermal dissipation has basically completed. Of
course, you should make well and right in every step and need know some
basic knowledge about thermal design.
|
|