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Shanghai Ceyuan Industrial (SCI) Ltd.

ADD:Room 901, No.20, Lane777, West Guangfu Road, Putuo District, Shanghai, China. 

Contact: Ellie Wang

TEL: +86-573-82753308

Mobile: +8618042017693

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E-mail: elliewangled@chinacytech.com

Website: www.cyledlight.com


Outdoor LED Fixtures Structure Waterproof

Outdoor lighting need to withstand long-term snow and ice, wind and rain lightning test, and the higher cost, and because the use of more difficult to repair on the external walls, to meet the requirements of long-term stable work. The LED is a delicate semiconductor components, Outdoor LED Fixtures if the damp, there will be chip moisture absorption, damage to the LED, PcB and other components, therefore, LED suitable for work in dry and low temperature. To ensure that the LED in the harsh outdoor conditions of long-term stable work, Outdoor LED Fixtures lighting waterproof structure design is critical

At present, the lamp waterproofing technology is divided into two directions: structural waterproof and waterproof material. The so-called structural waterproof, that is, Outdoor LED Fixtures in the product after the combination of structural components, already have a waterproof function. The material waterproof, it is the product design, leaving the potted plastic sealed electrical components of the location, Outdoor LED Fixtures assembly with glue material to achieve water. Two waterproof design are suitable for different product lines, Outdoor LED Fixtures each have their own advantages

Ultraviolet rays are exposed to the insulation of the wire outside the lamp, the protective coating of the shell, the plastic parts, the potting sealant, the sealing adhesive tape and the adhesive.

After the wire insulation layer is cracked, the water vapor penetrates into the interior of the lamp through the gap of the wire core. After the lamp shell coating aging, Outdoor LED Fixtures the edge of the shell coating crack or peeling, there will be gaps. After the plastic shell is aged, it will crack. Electronic potting colloid aging will produce cracking. Sealed rubber tape aging deformation, there will be gaps. Outdoor LED Fixtures Structural adhesive between the adhesive aging, reduce the adhesion will appear after the gap. These are UV damage to the lamp waterproof capacity.

Outdoor daily changes in temperature. Summer daytime lighting surface temperature can rise to 50 ~ 60 ℃, late to 10 ~ 20 qC, winter ice and snow days can be reduced to zero, Outdoor LED Fixtures the annual temperature difference is greater. Outdoor lighting in the summer high temperature environment, the material accelerated aging deformation. Outdoor LED Fixtures When the temperature drops to zero, the plastic parts become brittle, under the oppression of ice or cracking.

Lamp shell thermal expansion and contraction: changes in temperature lead to thermal expansion and contraction of lamps, different materials (such as glass and aluminum) coefficient of linear expansion of the two materials in the junction will appear displacement. Thermal expansion and contraction process is repeated, Outdoor LED Fixtures the relative displacement is also repeated, great damage to the airtight lighting.

Internal air thermal expansion and contraction: the ground floor can often be observed on the ground floor of the glass of water droplets condensation, and water droplets is how to infiltrate the pot filled with pottery? This is the result of the thermal expansion and contraction of breathing.

Temperature, in the huge negative pressure, the humid air through the light body material on the tiny gap, penetrate into the lamp body, the lower temperature of the lamp shell, Outdoor LED Fixtures condensed into water droplets and gathered. After the temperature decreases, under the action of positive pressure, Outdoor LED Fixtures the air is discharged from the lamp body, but the water droplets are still attached to the lamp. Repeated daily changes in the temperature of the breathing process, more and more water inside the lamp.

Thermal expansion and contraction of the physical changes, Outdoor LED Fixtures so that outdoor LED lighting waterproof design of the gas system into a complex system. The following two types of lighting waterproof system technical characteristics of the analysis, in order to understand its advantages and disadvantages.


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