The problem of outdoor high power lamps, such as LED light, tunnel lamp, street lamp, etc.:
1. Contact with high damaging contamination like salt mist and other harmful gasses；
2. damage from rain, fog, frost and solar radiation；
3. bulb under long time working needs to dissipate heat；
4. protection level is under IP65。
Protective vent solution for LED bulb from Voir：
1. dust, particle and contamination repellent, to avoid inner components from getting damage；
2.Water proof and venting gases, to protect lightening components by balancing internal and external pressure；
3. able to work under high and low temperature, to protect the internal components from getting hurt bybalancing the internal andexternal pressure；
4. Porous structure with averaged pore diameter and high porosity can effectively reduce salt crystallization from generating。
