LED street light of one of the heat is important to solve the problem

LED solar street light, heat dissipation is one of the important to solve the problem, not only directly related to the LED luminous efficiency during the actual work, and, because of the large LED street lamp brightness requirements, high calorific value and outdoor the use environment is harsh, if you can directly lead to LED rapid aging, reduced stability. Because the road lamps and lanterns, outdoor use should have certain levels of dust waterproof function ( IP） , a good IP protection tends to hamper the LED heat dissipation. To solve this contradiction, but have to solve the two problems are road lighting design should be an important aspect of attention. In this area is also apply LED to domestic road lamps and lanterns is unqualified and * more unreasonable. In the domestic use of unqualified and unreasonable situation are basic: ( 1) LED by the radiator, but LED connecting terminals and radiator design cannot achieve IP45 and above level, can meet GB7000. 5 / IEC6598 - 2 - 3 standard requirements. （ 2) Using common road lamps shell, using matrix LED inside the lamps and lanterns is a smooth surface, although this kind of design can meet the IP test, but not because of lamps and lanterns ventilation can cause at work, the temperature of the inner cavity of lamps and lanterns will rise to 50 ℃ ~ 80 ℃, under the working condition of the high, LED luminous efficiency is impossible high, the service life of the LED will also be discounted at the same time, in fact there is an obvious unreasonable situation. （ 3) In the lamps and lanterns, the instrument will be used to LED and fan cooling radiator, the inlet design in the lower part of lamps and lanterns, in order to avoid the rain the diffuser design in the next shot around the LED light source. It also can effectively avoid the entry of the rain, in addition the radiator and LED ( Light source cavity) Not, within the cavity is with the design, such as doing good, according to the requirements of the IP test of lamps and lanterns, can pass. This scheme not only can solve the problem of LED the heat dissipation, and at the same time meet the requirements of the IP rating. But this appears to be a good design, in fact, there is an obvious unreasonable situation. Because most of the roads in our country the use of lamps and lanterns, the dust in the air volume is larger, sometimes reach large ( Such as dust) , this kind of lamps and lanterns under the condition of general use after a period of time ( About three months to half a year) And the interior of the radiator dust will fill the gaps, make the heat sink effect, still can make the LED after * significantly shorten the service life by working temperature is too high. The lack of this scheme is not lasting good to use.

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