In 1,LED tube power protection sleeve: built-in power supply is placed in the aluminum alloy radiator, which must have a way with its insulation, or leakage. The external power supply is not the existence of this phenomenon. Currently on the market in three ways.

1) insulating sheet, with a paper insulation power around wrap, and then together into the lead alloy radiator. Disadvantage of this way: in the power into the aluminum alloy radiator during operation, insulation paper can easily be aluminum alloy corners cut; the two ends of the power supply for nothing is fixed, the power is easy in aluminium alloy pipe mobile.

2) heat shrinkable LED tube, which is a heated to tighten a PC material, is to use a heat-shrinkable sleeve in the power of the outside, then use hot wind blowing, so that the heat shrinkable tube close to the power pack on the inside, so as to achieve the aim of insulation. Disadvantages: heat-shrinkable tube and the power source the electrical components together, supply heat radiated from the not dispersed, thereby reducing the power of life.

3) led tube insulation box, which is based on the power size to order an insulation box, a heat dissipation hole, fixed pieces of it, is the best way of insulating effect.

In 2, the fixed end of the connector: currently on the market in many ways, there are aluminum skin, a PC material, PC material with aluminum skin, fixed points useful glue fixed at two ends of the light tube, also useful screw fixed in the lamp tube two. Safety, environmental surface words, fixed with screws is broad consumer use.

In 3, PC mask transmittance : the market is a transparent mask light transmission rate can reach 88 - 95%, mist mask transmittance in 70 - 86%. If one did not add mask lamp luminous flux is 2000lm, now give it with light transmission rate of only 88% of the transparent face mask, so its actual luminous flux is the only 1760lm luminous flux. If you add the transmittance is 95% of the transparent face mask, so its actual flux is 1900lm, is also a transparent mask, why there are such big difference? The answer is in the mask material. Currently on the market PC mask materials are ordinary PC material, optical material PC. Between them, because manufacturers are not the same, the transmittance of the considerable difference.

4: the LED chip, substrate current through a certain arrangement table posted on the PCB or aluminum based electronic circuit board, and then fixed in the aluminum alloy radiator. PCB thermal conductivity is 20W / MK, aluminum alloy thermal conductivity is 200W / MK. Thermal conductivity coefficient is bigger, its heat conduction effect.

5, life: lamp life, mainly depends on the chip, power supply, cooling and other aspects of the reasonable collocation, but these do not knowledgeable layman is still very difficult to make a choice, in the final analysis, besides the most basic materials, as well as one of the most basic reference is the light efficiency, high light efficiency, in a certain extent, this lamp is better! The general strength of the manufacturers have the test equipment.

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Davis shang