Email:elliewangled@chinacytech.com Shanghai Ceyuan Industrial Co.,Ltd

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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

FAX: +86-573-82753302

E-mail: elliewangled@chinacytech.com

Website: www.cyledlight.com


Outdoor LED Fixtures Structural Design Is Critical

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, if 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, long-term stable work, lighting waterproof structure design is critical.

At present, the lamp waterproofing technology is mainly divided into two directions: structural waterproof and waterproof material. The so-called structural waterproof, that is, 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, assembly with glue material to achieve water. Two waterproof design are suitable for different product lines, each have their own advantages.

UV radiation on the outside of the lamp insulation layer, Outdoor LED Fixtures protective coating shell, plastic parts, potting, sealing rubber tape, adhesive has a damaging effect.

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, the shell edge coating cracked or stripped, there will be gaps. After the plastic shell is aged, it will crack. Electronic potting colloid aging will produce cracking. Seal 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.

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.Outdoor LED Fixtures Thermal expansion and contraction process repeated, the relative displacement is also repeated, great damage to the airtight lighting.

The 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 how to infiltrate the water droplets filled with potting lamps inside it? This is the result of the thermal expansion and contraction of breathing.

The temperature rises, Outdoor LED Fixtures under the action of the huge negative pressure, the humid air passes through the tiny gap on the material of the lamp body, penetrates into the lamp body interior, encounters the lower temperature lamp shell, condenses into the water droplets and gathers. After the temperature decreases, Outdoor LED Fixtures under the action of positive pressure, 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.


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