There are many LED bulbs on the market that can be used to replace 40-watt traditional incandescent bulbs. Do you believe it? Don't say anything else, just say that the luminous flux is just right. Is it true that these LED bulbs can replace 40-watt traditional incandescent bulbs? Or, to put it another way: To replace the traditional 40-watt incandescent lamp How bright is the LED bulb? How much does it take to meet the brightness requirements of a traditional 40W incandescent lamp? Which LED bulbs really meet the brightness requirements?
For the current major brands of LED bulbs in the first half of 2011, preliminary light flux inspection
We know that the efficiency of traditional light sources such as incandescent lamps is about 11 to 12 lumens per watt, which means that a 40W incandescent bulb should have a brightness of at least 450 lumens. The United States, Europe, Japan and other LED lighting have replaced the traditional light source requirements, which replace the traditional 40-watt incandescent LED bulb light measurement requirements between 450 to 485 lumens. Therefore, if we look at the LED bulbs on the market, we can find that many products claim to be able to replace the traditional 40W bulbs in their advertisements. However, if you look closely at the specifications, you can find that they actually have 485lm to 340lm. The specifications are different. Some manufacturers believe that because of the directivity of LED luminous flux, in some cases, such as the table lamp with limited illumination range, more than 300 lumens of LED bulbs can replace 40-watt white light bulbs.
There is no small difference in the brightness requirements of LED bulbs used to replace 40-watt traditional incandescent bulbs between different brands or products. Therefore, LEDinside examines the brightness specifications of representative LED bulb manufacturers around the world, and the following are our findings:
First, let's take a look at European and American lighting manufacturers such as Philips and General Electric (GE). The two companies claim LED bulbs equivalent to 40W conventional bulbs, including Philips' 8 watt Master LEDbulb, and GE's 8 watts. Model 62180 LED bulbs, with brightness of 470 lumens and 450 lumens, respectively, meet the replacement brightness requirements.
Next, let's take a look at the Japanese factory that is meticulous and rigorous. Sure enough, whether it is Toshiba's 7.2-watt LDA7L or Sharp's 7.8-watt DL-LA42L, its commercial brightness specifications are also 485 lumens, in line with the guidelines of the Japan Electric Ball Industry Association. And Toshiba's warm white light (electric ball color), Sharp this is the same.
Let's look at the Korean giants LG and Samsung, who are aggressive and brave. First of all, what we are looking at is the recent positive LG in the LED lighting layout. In May, the company introduced the LB08D830L0A, 7.5W LED bulb for the replacement of 40W incandescent lamps. After inspection, it was found that the results were not disappointing. The luminous flux was 485 lumens, which was in line with the specifications.
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