Ceiling lamps, as the name suggests, the lamps above installed horizontally at the bottom is completely attached to the roof on so called ceiling. Its ordinary white light bulbs, fluorescent lamps, high intensity discharge lamps, halogen light source. The most popular on the market is the LED ceiling and Power LED Flood Lights, gorgeous appearance the LED Ceiling adsorbed or embedded in the roof ceiling lighting, indoor main lighting equipment.
With home decoration heat continues to heat up, the ceiling lamps changes with each passing day, is no longer confined to the front of the single lamp, but to diversify development, drawing on both the luxury and style of the chandelier, ceiling installation avoid the defect the shorter room can not be installed large luxury lighting. To make a more comprehensive understanding of the ceiling lamps led grow light fixtures, today I gave you in detail about the ceiling lamp of knowledge, in order to design and optional ceiling lamps reference.
(A) ordinary ceiling lamps
1 ceiling lamp shape
Ordinary ceiling lamp shape although there are many, but the most common is round or square, the complex is more variety of bizarre Crystal Ceiling.
2 lamp ceiling lamp
Most of its lamp T5 fluorescent bending, many different specifications, mainly in the following led grow light fixtures.
3 ceiling lamp power
Ceiling lamp power and not clearly defined, and its power is most commonly used for 10W, 16W, 21W, 28W, 32W, 38W, 40W.
(B) the problems and shortcomings of the ordinary Ceiling
Low luminous efficiency.
The entire ballast energy saving lamps lighting effects only 55lm /, the most high-power U type only 80lm / W. And because all of these Ceiling mostly used T5 lamp, bending into various shapes. However, regardless of the final bend into shape, it is 360 degrees luminescence, wherein upward 180 degrees of the light must be reflected back only into useful light, and this reflection process will lose a lot of light. So, later made into lamps light efficiency of at least want to make a 70% discount. Is the light efficiency but also multiplied by 0.7. And when in actual use, the luminance decay with time quickly. For example the tricolor lamp T5 YH32RR16 of a Philips 32W ring, the color temperature for 6500oK, its luminous efficiency to 67lm / W, the total number of lumens 2150lm, in fact, only 70% of the light can take advantage of. Is 1500lm.
2 containing mercury
The low boiling point of mercury, at room temperature, was evaporated. A waste discarded fluorescent lamps broken, immediately distributed to the surrounding mercury vapor, the moment the mercury concentration in the ambient air can be up to 10-20 mg / cubic meter, exceeding the national maximum allowable concentration of mercury in the air (0.01 mg / cubic 1000-2000 m) times the body once inhaled 2.5 grams of mercury vapor that is life-threatening. And high penetration of liquid mercury, into the ground immediately after they fell into the underground pollution of groundwater led grow light fixtures. 1 mg of mercury is enough to contaminate 5454.5 kg of drinking water, to make it up to meet the safety standards for drinking water. Now desperate to promote energy-saving lamps, it is really irresponsible to our children.
3 low life
Energy-saving lamps in accordance with the phosphor divided: the mixed powder, halogen powder, the three primary colors. The life of halogen powder; hybrid the powder life in 4000 to 6000 hours 3000 to 4000 hours; the tricolor known more than 8000 hours.