To really understand the full scope of this question, we have to understand how LED bulbs actually produce light and in turn heat. Inefficiencies due to physical deformities in the components of the LED light will instead convert some of the electricity into heat. We can, for example, quite easily unscrew an LED bulb that has been turned on for hours, while an incandescent bulb will burn if touched.
Why does this occur? There are two main reasons:. Incandescent bulbs are famous, or notorious for being very hot when they produce light. In our process of trying to create different degrees of brightness and color temperature, the inefficiencies in converting energy to the light desired results in energy wasted and this energy is in the form of heat. It is true that this heat will be much less than the incandescent of the past, but heat is still produced.
Due to the way the lighting is laid out and the amount of power generated, both will create heat but the LED will be considerably lower across the entire piece. By staying at or below this temperature, you are expected to gain the most life out of the product, exceeding the temperature will still allow it to function but properties like lifespan and color will be diminished at a much faster rate. That's great for the environment, and it can save you money on your electricity bill in the long term.
If you're smart home-inclined, LEDs open the door to many interesting and worthwhile features , including bulbs that change colors and bulbs that sync with your security system or voice assistant of choice. Besides, several incandescent bulbs -- including the watt incandescent -- are being phased out, so you'll need to make the switch eventually in any case. Buying the right LED is different from buying incandescent bulbs.
Before you go shopping, though, there are some things you need to know. Read more: The best LED floodlights you can buy in When shopping for bulbs, you're probably accustomed to looking for watts as an indication of how bright the bulb will be. The brightness of LEDs, however, is determined a little differently. Contrary to common belief, wattage isn't an indication of brightness, but a measurement of how much energy the bulb draws. For incandescents, there is an accepted correlation between the watts drawn and the brightness produced, but for LEDs, watts aren't a great predictor of how bright the bulb will be.
The point, after all, is that they draw less energy. But don't bother doing the math -- there isn't a uniform way to covert incandescent watts to LED watts.
Instead, a different form of measurement should be used: lumens. The lumen lm is the real measurement of brightness provided by a light bulb, and is the number you should look for when shopping for LEDs.
For reference, here's a chart that shows the watt-lumen conversion for incandescents and LEDs. Read more: The best LED light bulb for every room in your house. As you can see in the chart above, an incandescent can draw up to five times as many watts for the same number of lumens.
Get a sense of the brightness in lumens you need before heading to the store, and throw away your affinity for watts. A heat sink is a device that pulls heat away from the rest of the equipment and then releases the heat.
LEDs produce less heat energy and the temperature released by the heat sink is generally less hot than other light types. However, the heat sink of an LED does get hot so be careful not to touch this part when the light is turned on. The quality of the heat sink determines how fast the heat is released into the surroundings. How much heat LED lights produce and how energy efficient they are is the main reason why LED lights last longer than any other form of light bulb.
All lights produce an internal heat, also called the junction temperature of lights. LEDs are able to keep the junction temperature lower than other types of lights thanks to the heat sink. A higher junction temperature of other light types is the reason why they have a shorter lifespan compared to LED lights.
The higher internal heat affects the filament or structure of the light and over time creates damage.
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