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Thepicture below shows just how the BANFU really works, in all weathers, fromearly in the morning to the evening, in summer and winter time, and how muchefficiency difference you get in comparison with regular skylights. You willnotice: no temperature differences, no shadow on the floor or the walls,abundant light throughout the day!
Banfu daylighting system structure and working principle
What is a Tubular Skylight? How Do Tubular Skylights Work?
Lighting dome, flashing, light tube, fixed ring, decorative ring and diffuser composed a whole set of the BANFU light tube system. The upper lighting dome absorbs the sunshine sufficiently, after been reflected and enhanced by the high reflected light tube and guided to the diffuser; the diffuser spread the light to any angle of the space;this is how the system works. It is a miracle item warm in winter while cooler in summer which makes sure the heat and cool air stay inside and also prevent unwelcomed air outdoor. This system ended the electronic indoor illumination situation instead of pure natural light. It is a power saving, environmentally peaceful system which guarantees 12 years warrantee.
As a high efficient, simple install, low cost system,BANFU tubular skylight system can install at any place (flat roof, slope roof) like
Lighing dome
Round dome shape and flat shape is optional (irregular shape could be customized)
You can choose PMMA or PC as the raw material of the lighting dome which with high transparency and good reflection. The UV protection on the surfce can prevent 90% ultraviolet, which lengthen the dome’s life.
Flashing
The flashing is stamped out by machine one time to make sure the using time, appearance and waterproofing function.
The shape of flashing can be customized according to the roof structure. The flashing is a bridge
to connect the dome and light tube.
Light tube
Material: imported 0.4mm high reflective aluminum sheet, reflectivity high to 99.7%.
Style: rigidity tube, 30°,45°,60°,90°elbow angle.
Specification: 300mm, 400mm,600mm and 1200mm is available.
Advantage: high stability, high reflectivity, light weight, anti-rust, long life, install simple, maintenance free.
Suggestible longest length: 280mm-8m, 400mm-12m, 550mm-20m.
Ceiling trim & Diffuser holder
The fixed ring and decorative ring is made by injection molding, with wonderful appearance, can be matched with the ceiling perfectly. With good appearance.light weight, high intensity, anti-corruption.
Diffuser
Optional material is PC/PMMA; all of these three materials has good transparency, heat resistance and sound insulation. The diffuser redistributes light and spread to the room equally which brings more comfortable living situation to the human being.
How many efficiency can the BANFU day lighting system bring?
Economical benefit: electric power saving and reduce air condition’s using, 2-3 years you can recover the cost while the using life is about 25 years, no maintenance cost. The dome on roof can self-cleaning by rain water.
Healthy benefit:Scientific studies proves that natural light has better visual effects and phschonogical effect. It can improve the indoor environment and enhance body health.
Environmental peaceful:natural light been spreaded soft and even, no twinkle, no dizzle light, no pollution, and filter harmful rays which helps to protect the human being’s health.
Fashion:good appearance, creat low energy, high comfortable working, living and entertainment environment. It’s perfect cooperation between nature and artificial constructure.


Thank you for your interest in our solar tubular skylights.
Besides solar tubular skylights, there are more innovative lighting products from BANFU. Please feel free to send us inquiry for more details.
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