Three Types Of Automobile PCB Cooling Methods

Three types of Automobile PCB cooling methods
 Many people think that the Automobile PCB is not very hot, do not need a special cooling system. In fact, this is wrong. Qingdao Automobile PCB to understand the Automobile PCB has three cooling methods:
  The first: conventional cooling method. This conventional way is to use our frequently used heaters to heat the Automobile PCB. But as it is used in the ordinary thermal conductivity so the thermal conductivity of the general, this kind of Automobile PCB heat is not so to force.
  The second: liquid thermal way. This is a semiconductor research institute did not take long to study a way of cooling. This way to solve the Automobile PCB high-power small-volume LED cooling problem has a very big contribution.
  The third: heat pipe with the way heat. This kind of heat pipe to the Automobile PCB cooling way is similar to our computer CPU cooling. But so the size of the LED will become relatively large, more cumbersome.
 Automobile PCB in the modern decoration is widely used, such as shopping malls ceiling, hotel, home decoration and so on. The
  Secondary Optical Design of Automobile PCB System. The design of the optical system mainly includes the following aspects: ① According to the lighting object, the demand of the luminous flux determines the shape of the optical system, the number of LEDs and the size of the power; ② The combination of several LED tubes is designed as point light source, Surface light source of the "secondary light source", according to the composition of the secondary light source, the calculation of lighting optical system; ③ constitute the lighting system design of the "secondary light source" on each LED tube light distribution control is very important.
  Improve the Automobile PCB color. The current white LED (Qingdao Automobile PCB) generally use blue LED superimposed by the blue light to stimulate the yellow yttrium aluminum garnet (YAG) phosphor, synthetic white. The sensitivity of the human eye to the color difference is much higher than that of the light intensity, and the color rendering of the light source is often more important than the luminous efficiency. So adding the right amount of red light and can maintain a high luminous efficiency LED white light is an important issue.
  Automobile PCB system heat pipe. Often known as LED cold light source, it is because the principle of LED light is electronically directly through the composite photon, without the need for hot process. However, due to the presence of Joule heat, LED in the light also accompanied by heat, LED is a temperature-sensitive devices, when the temperature rises, its efficiency dropped sharply, so the system structure design and thermal technology development is also the subject of LED applications.
 Automobile PCB because of its energy-saving effect is obvious, long life, no flicker effect, no noise, light and wide operating voltage range and other characteristics of the growing popularity of consumers. But the current market, many of the Automobile PCB, the quality of good and bad. How to you in the lighting shop dazzling array of energy-saving lamps to buy their own satisfaction with the product? Through the "five to see" can identify the advantages and disadvantages of energy-saving lamps, Qingdao Automobile PCB introduced as follows.
   A look at packaging and trademark
The state compels the manufacturer of Automobile PCB products to mark the following contents on the outer packaging: rated voltage, voltage range, rated power, rated frequency. Generally speaking, high-quality products, trademark printing quality is good, the font is clear, easy to fall off, wipe with a soft damp cloth, signs clearly visible, easy to wipe, there are manufacturers of trademarks and related certification mark. Fake and shoddy products, poor quality printing, fuzzy fonts, easy to erase, no manufacturer's trademark and related certification mark.
   Second look at the appearance of the Automobile PCB
The real Automobile PCB, is the use of three primary colors tube, tube white, covered with hand to see, more white. In addition, from the lamp point of view, can be more than one lamp together, lamp shape and shape consistency is better for the machine bending forming, mostly large-scale production of the product. Product consistency is good, the quality is easier to be guaranteed, the maintenance of the interchangeability is better. Of course, the appearance can not have cracks, loose and intertwined between the traces of pry. In the installation, removal process, the lamp should not be loose, tilted head phenomenon. Lamp plastic shell must choose the kind of engineering plastic flame retardant type. Ordinary plastic is easy to deform and flammable, is prohibited for the production of energy-saving lamps. From the surface can be a simple distinction between the two, the latter surface is more smooth, shiny, the former surface similar to the frosted glass texture.
   Three look at the work of the temperature
 Automobile PCB in the normal working condition, the temperature rise should be low. Otherwise, the Automobile PCB life is very short. At the same time, energy-saving lamps lit, there is a very fast flash, or very dazzling fluctuations, indicating that the quality of energy-saving lamps.
   Four look start performance
Automobile PCB start has two characteristics: First, the higher the temperature start the easier; Second, the lights off, not flash. In addition, it is worth mentioning that many Automobile PCB is very dark, which bulb life expectancy, Automobile PCB should be in its internal power circuit and PCB board.