LED灯泡和白炽灯有什么区别?

At the beginning of the 20th century, light bulbs were handmade, with incandescent filaments painstakingly being placed in tiny glass globes.现在的制造更加自动化了，但白炽灯泡的性能并没有改变——消耗的80-90%的能量仍然转化为热量，而不是光。

LED正好相反，大约80-90%的能量消耗都转化为光，所以与白炽灯泡相比，它们发出的热量非常少。就火灾隐患而言，它们更安全，甚至只是偶尔烧到你的手指，它们也有助于在夏天的几个月里舒适——在你的家里打开10个100瓦的白炽灯泡就像打开一个800-900瓦的加热器。

在它们问世后的很长一段时间里，led一直都很有效，但它们只提供冰冷的临床光。在那个年代，“更高效”的选择是发光的紧凑型荧光灯，这种灯泡充满了汞气体，如果你弄坏了它，也会对健康造成严重危害。在过去的几年里，led的颜色明显变暖，现在随着他们对灯丝灯泡的回应的引入，led终于可以像古董吊灯一样发出古老的光芒。

Are there filaments on an LED bulb?

Sort of... it's just an illusion: LED filament bulbs contain a glass frame with a series of simulated filaments that glow when lit. Apart from the fact that these mock 'filaments' appear yellow when the bulb is switched off, there is little indication that you are looking at an LED light when it's on.

A close inspection by a purist may reveal the fact that Thomas Edison didn't make them for you by hand (similar to the way a purist will notice the missing crackle of vinyl records in MP3 recordings); just don't look (or listen) that intently. Instead, sit back and enjoy the music and warm light.

The difference between incandescent and LED filament bulbs:

The thin coil of filament in an incandescent bulb heats up as an electric current flows through it, thus it produces light. The principle is the same with an LED filament bulb, but standard incandescent filaments are simply imitated using LED chips.真正值得记住的区别是，一个4瓦的LED灯丝灯泡和一个40瓦的白炽灯发出相同的光，它的寿命是40瓦的100倍，甚至更多。

  • Average life: between 15,000 and 40,000 hours (compared to 50 to 100 hours for incandescent)
  • Average energy consumption: between 2 and 10 watts (compared to 60 - 100 watts with incandescent)

led负担得起吗?

According to astudy by the Swedish Energy Agency2014年11月，LED灯丝灯泡的成本比传统LED灯泡平均高出20%，但效率却高出40%。你会发现价格差别很大——根据型号的不同，价格一般在3美元到20美元之间。

It would seem, however, that price is not directly related to performance. According to that same study, among the LED filament lamps tested, the cheapest ones cost less than half the average price, while their efficiency was actually above the average, and their brightness and available colour selection were also comparable.

Lastly on the topic of price, that study was done many years ago, and as LEDs have become more mainstream, they have already closed the gap significantly with incandescent bulbs.

Finding LED bulbs:

You should be able to find LED bulbs in most home and building supply stores; they're even common in local hardware stores now.Things to look for when comparison shopping between any LED bulbs are if they carry an ENERGY STAR certification, the colour of light they emit, and whether or not they are dimmable if that's what you're looking for. Filament bulbs are often also called 'vintage LEDs'. For further research of specific brands, it may be worth doing a product review of a particular brand before you stick it in your Amazon or Ebay shopping cart.

For an accurate visual comparison between the old world and the new, we found this great video atSuper Bright LEDsthat shows the incredible likeness between modern LEDs and traditional looking filament bulbs. The company sells filament bulbs and ship all across Canada and the US.

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