| Model |
CVDSGV3432 |
| Production Country |
China |
| Size (L x W x H cm) |
12 x 13 x 15 |
| Weight (kg) |
0.52 |
| Color |
7w E27 AC-DC12-85V No |
| Main Material |
Synthetic |
It is generally believed that the electric light bulb was invented by the American Thomas Alva Edison. But if you do serious research, another American, Heinrich Go, invented the same principle and material and reliable light bulb decades before Edison, and many others before Edison also invented the light bulb. made many contributions. In 1801, British chemist Davy energized platinum wire to emit light. He also invented the electric candle in 1810, using an electric arc between two carbon rods for lighting. In 1854, Henri Goebbels used a carbonized bamboo thread, which was energized and glowed under a vacuum glass bottle. His invention today appears to be the first practical incandescent lamp. The light bulb he tested at that time could last for 400 hours, but he did not apply for a design patent in time. In 1850, the Englishman Joseph Wilson Swan began to study the electric light. In 1878, he obtained a British patent for a light bulb powered by carbon filaments in a vacuum, and began to establish a company in the United Kingdom to install electric lights in each home.
Key Features
BrandName：haotiancheng
ItemType：LEDBulbs
ColorTemperature：CoolWhite(5500-7000K)
LedBulbType：UmbrellaBulb
LEDChipModel：2835
Occasion：livingroom
Voltage：DC&AC12-85V
LuminousFlux：250-499Lumens
LEDChipBrand：Epistar
Shape：Annular
Certification：ROHS
Certification：ce
Certification：LVD
Certification：EMC
BeamAngle(°)：180°
BaseType：E27
AverageLife(hrs)：50000hours
Length：5cm
PowerTolerance：5%
What's In the Box
1*product
