First, the quilt should not be exposed for a long time Sun quilts are also learned. Ultraviolet rays can kill viruses. Under the combined action of sunlight and wind, harmful bacteria and microorganisms adsorbed in quilts can be quickly removed. Down, synthetic fibers and wool can not be exposed for a long time, and it can be dried in a ventilated place for about 1 hour. Second, the height of the pillow is also stressful If you wake up, you will feel headache and neck pain. It may also be accompanied by symptoms of asthma, stuffy nose or runny nose. If so, then you should change the pillow. The appropriate height of the pillow should be slightly lower behind the pillow when lying on the back, and higher near the neck, which can increase the contact area between the neck and the pillow, and maintain the natural physiological curvature of the cervical vertebra. Third, the method of storing quilts and pillows The best way to store quilts and pillows is in a breathable cotton bag. The duvets, silk quilts and wool in the home are not recommended to be vacuum-retained, and the air in the quilt is completely sucked away, which may affect the warmth effect in the future. Fourth, used quilts are best cleaned once a year Even if there is a quilt outside the quilt, the used quilt can be washed once a year. It is recommended to get a professional cleaning shop, which will greatly extend the use time. Five, bed cleaning points Sheets and quilts must be carefully distinguished when they are washed. Do not let the washing machine, powder excess, otherwise it will easily damage the cloth fiber of the bedding, causing premature wear. Chemical fiber fabrics, can not be soaked with high temperature water, machine wash, water wash can be. High-power LED Lamp Beads are a kind of LED Lamp Beads. Compared with low-power LED lamp beads, high-power LED lamp beads have higher power, brighter brightness and higher price. Low-power LED lamp beads have a rated current of 20mA, and those with a rated current higher than 20mA can basically be counted as high-power. The general power numbers are: 0.25w, 0.5w, 1w, 3w, 5w, 8w, 10w and so on. The main brightness unit is lm (lumens), and the low-power brightness unit is generally mcd (millicandela, 1cd=1000mcd), which is the luminous intensity I. High-power lamp beads generally refer to imitated lumen lamp beads, just like the shape of a picture. SMD's are higher than 20MA. It is not called high power. Smd Led 2835 Lamp Beads,High Power Lamp Beads,Highlight Warm White Glow,High-Power Purple Lamp Beads Dongguan XINYUDA Technology Co., Ltd. , https://www.gdxige.com
1cd=1 lm/sr (lumens/three-dimensional radian)=1 candlelight. It is explained as: the luminous flux emitted by the light source within the solid angle dΩ in the specified direction or the luminous flux dΦ transmitted by the obtained light source, the quotient of the two is the luminous intensity I (unit is candela, cd). The outer cover can be made of PC tube, which can withstand high temperature up to 135 degrees. PC tube made of LED cover, the internal temperature can reach 135 degrees, and the external temperature can resist -45 degrees without cracking
As an emerging green, environmentally friendly, energy-saving light source, it is widely used in car lights, flashlights, lamps and other places. The reason why LED high-power is called this is mainly for low-power LEDs. I have summarized three classification standards: The first one is that according to the power size can be divided into 0.5W, 1W, 3W, 5W, 10W... 100W varies, depending on the total power of the molded product after packaging.
The second type can be divided into different packaging processes: large-size epoxy resin packaging, piranha-like epoxy resin packaging, aluminum substrate (MCPCB) packaging, TO packaging, power SMD packaging, MCPCB integrated packaging, etc.
The third type can be divided into low-light-attenuation high-power products and non-low-light-attenuation high-power products according to its different degrees of light attenuation.
Of course, since there are many parameters of high-power LEDs, there will be different classification standards according to different parameters, so I will not repeat them here.
High-power LED lamp beads white light
High-power LED lamp beads white light
LED high-power is still one of the LED packaging products, and it is the most important part in the field of general lighting for semiconductor lighting.