Ul Ce Passed Led Foldable Desk Lamp , Eye Protection Lamp, Dimmable Led Table Lamp
Flexible tube, flexible lighting angle
High brightness, but energy-saving
No stroboflash and long age
Saving Energy 85%
Fashion, but functional
Convenient to use at AC or USB
Bright, but less heat emitting
No stroboflash, No UV or IR radiation
Working voltage: AC 110V~240V or DC 5V
Life span: 50,000 hours
1. Table lighting;
2. Desk lighting;
3. Studying room lighting;
4. Bedroom lighting;
5. Stage lighting.
Nice products with nice price
Low consumption standby
Newest exclusive design
Strictly according to customers' requests when produce
Goods delivery in time
Fantastic feedbacks from the end users to our customers
Estimated Delivery Time
2-8 business days
3-8 business days
2-10 business days
1-7 business days
6-14 business days
7-12 business days
China Post Air Mail
7-15 business days
China Post SAL
14-30 business days
30-40 business days
1. 3-10 business days for Sample Orders; 7-40 business days for Bulk Orders.
2. "Business days" means Monday-Friday, excluding holidays.
3. DHL and UPS cannot ship to military or P.O. boxes address.
4. The Shipping Service above is for reference only, for any other questions, please feel free to contact us.
- Q:The principle of LED the desk lamp that shield an eye
- The LED similar principle. But the difference is that the LED is not by the electrons within the atoms jump to glow, but by the voltage on the LED on both ends of the PN junction, the PN junction itself form a level (in fact, is a series of energy levels), and then the electrons jump on this level and photon to glow. New LED display units are low power consumption, high brightness, long life, the advantages of small size, this article from the beginning of the LED display a brief history of the development of, surface-mount LED, automobile application is discussed and the development trend of LED lighting, LED to the Chinese engineers engaged in the development of display device has a certain reference value. Global the first commercial light emitting diode (LED) is made with germanium materials in 1965, its unit price is $45. In 1968, the LED research and development has made breakthrough progress, using nitrogen doping process to make GaAsP device efficiency reached 1 lumens/watt, and can emit red light, orange light and yellow light. To 1971, the industry and introduced with the same efficiency GaP green bare chip LED. Beginning in 1972 with a small amount of LED display for clock and calculator. The world's first using LED watch was initially sold in expensive jewelry store, it will cost up to $2100. Almost at the same time, HP and Texas instruments have also launched calculator with seven red LED display. In the 1970 s, due to the LED devices in the home and office equipment in a large number of applications, LED prices plummeting. In fact, the LED is the era's main text display and digital technology. However, in many commercial equipment, LED display also gradually by the fierce competition from other display technologies, such as LCD, plasma and vacuum fluorescent display.
- Q:How many watts of 10 square meters of the bedroom with led bulbs Warm white or white
- LED bulb specifications now have 3 w, 5 w, 7 w, 9 w is common, like how to buy big brand certainly better brightness, 5 w and close to the original energy-saving lamps 10 w, about half is the province. 10 square room seeing you is what lamps and lanterns, with an estimated 5 w and 7 w enough. Warm white or white look like, do you want to create a warm environment, for example, the preferred warm white, want to feel a little bit bright choice is white.
- Q:Energy-saving light bulbs or LED bulb can't use on the dimmer lamp holder?
- If will move light to the middle position, weakened due to power supply, energy-saving lamps and the LED light can't work normally. To energy-saving light, it will flash, affect the service life of energy-saving lamps. About LED lights, can cause brightness is low and unstable, but will not affect the service life of LED lights
- Q:How many volts 4 w power led desk lamp
- Depends on what kind of, have 220 v, also has a charging V6, 12 v.
- Q:Long amount of led desk lamp can plug the power cord with straight?
- See what kind of, is that a light, if it is r-c step-down circuit + lead-acid battery, internal voltage regulation and protection circuit, can't turn on the light, turn on the light charging will give lights to burn out, you look for the packing instructions are printed on the color card, flashlight, LED lamp will be printed with similar to turn off the lights and then charging, charging instructions, please do not use when we use the LED rechargeable flashlight, rechargeable lamps, all because of electricity used up, forgot to turn off the lights, on 220 v power directly, burn the majority.
- Q:Home to buy led desk lamp is broken? Can someone fix it?
- Led lamp production line is simpler, less complicated, general physics students will know their internal circuit structure, can also according to their own learning physical knowledge for repair, is a master of his own academic degree. If not, it may as well borrow coup. Led desk lamp is broken do next the third case is the light switch to normal, the general desk lamp can have between dark and light switch, if so, could be the governor, the interface carefully check, is there any loose or not, whether the governor is out of order, if the governor bad needs to be replaced, just stepping up strong interface
- Q:The LED lamp how to realize the function of adjustable brightness and color temperature?
- Simple dimming can be concatenated in the LED lamp bead loop resistance, change the current, can adjust the brightness, better with adjustable brightness of PWM pulse width adjustment, circuit is more complex. Color temperature seems to be no commonly, by LED lamp bead characteristics (fixed) materials and manufacturing has decided, unable to adjust.
- Q:With few desk lamp LED tile good children
- LED lamp general 6/7 w is very bright, is too light is bad for your eyes
- Q:Desk lamp battery charging why not directly connected light emitting LED lights
- Charging desk lamp is two to 2 v battery combination section two is 4 v battery current also big white leds optimal voltage at about 3 v Scope of work of floating + - 10% plus pressure drop a diode is just 0.7 V power 4 V - 0.7 = 3.3 thus satisfy the white LED lamp working condition No diode LED will be hot Even burned
- Q:A led desk lamp always zi zi ring is how to return a responsibility?
- Inside thrum have poor contact, look at the best, don't have accidents
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