Now on the market for its own enough energy saving and long service life of LED is welcomed by everyone, because LED and traditional light bulbs are different, in the light-emitting process, the traditional light bulb surface touch temperature is very high, the surface of the LED light touch is cool, many people will ask: Do LED lights get hot? Let’s find out today with this article.
What are LEDs, and how do they work?
LED is fully known as light-emitting diode, is a semiconductor light source, when the current passes through, the electron complex jumps to produce photons, LED will emit a light source. From the first discovery of LEDs as a low-brightness red version of light, LEDs are now able to display full color light; and with visible, infrared and ultraviolet versions, LEDs are widely used in a variety of areas such as lighting and electronic screen displays.
Do LED light get hot?
LED lights can get hot. Although from the public’s perception, the surface of the LED when touched hardly feel the heat, but studies have shown that, even if the LED’s electrical energy conversion of light energy is very efficient, it is inevitable that almost all the energy conversion process to produce light energy will have a part of the energy used to produce heat, the difference lies in the different light models for light energy and heat energy conversion rate will be different.
How do LED lights generate heat?
LED in the process of energization, most of the electrons through the composite jump, resulting in the release of photons, the formation of light energy; a few electrons occurring in the non-radiative jump, did not produce photons, it will be released in the form of heat energy.
Usually, LED has 2 kinds of heat production form:
- Junction heat: when the electrons in the semiconductor internal electronic compound point for compound leap, part of the energy to thermal energy loss, which is the main reason for the LED to produce heat.
- Driver heat: LEDs require the use of a driver to run, the driver runs the process of converting AC power into low voltage DC power, which generates part of the heat energy.
How much heat does an LED light emit?
Energy Efficiency
20% to 50% of the LED’s energy will be used for heat, and most LEDs are able to convert 80% of the energy into light; this is compared to traditional incandescent lamps where 10% of the energy is used to emit light and 90% of the energy is used to produce heat, and the results are clearly amazing. This is why LEDs are said to be excellent at saving energy.
Temperature
Typical temperatures for LEDs are approximately 95°F (35 °C) on the exterior of the diffuser and 150°F (65.5 °C) near the base.
Diffusers
Every LED has a heat sink at its base, from which the heat generated by the LED is dissipated. A well-designed heat sink is critical to the longevity of an LED.
LEDs and why heat matters
If the energy conversion process of the LED some of the loss of a small amount of energy is not taken into account, the energy conversion process can be simply summarized as follows: electrical energy → light energy + heat energy.
This means that the part about heat energy conversion is reduced and the part about light energy conversion is increased.
Therefore, ordinary LED lighting is more energy-efficient than ordinary incandescent lamps, and when we choose the energy-saving LED lamps on the market is more energy-efficient than ordinary LED lamps.
Does the deformation of the LED light affect the heat generated?
The energy conversion process of LED is completed in the diode, therefore, the slightest distortion of the diode will lead to the failure of light energy conversion, energy loss in the form of heat.
The deformation of the LED lamp will not only affect the heat generated, and the impact is huge, LED production materials if the quality of high, more difficult to deformation.
The link between heat, energy and lifetime of LED lamps
All light energy conversion will produce heat energy in the conversion process, ordinary light bulbs will be in the long light-emitting process, due to the high temperature step by step to lead to changes in the material near the junction temperature point, and with the passage of time the light gradually dim.
LED itself is very low heat production, and the base has a heat sink, maximize the LED internal heat reduction, slowing down the process, but also so that the LED service life is longer, the general service life of the LED lights can reach more than 5 times the service life of traditional light bulbs.
How does LED lighting differ from other light sources such as incandescent and CFLs?
Incandescent Lights
Incandescent lamps typically convert 10% of their electrical energy into light and 90% of their electrical energy into heat, and have the highest touch temperature of the three lamp types.
Compact Fluorescent Lamp (CFL)
CFLs typically convert 20% of electrical energy into light and 80% into heat. Of the three types of lamps, CFLs have a slightly lower touch temperature than incandescent lamps.
LED bulbs
LED bulbs usually 80% of the electrical energy into light energy, 20% of the electrical energy into heat energy, and even energy-saving LED can achieve the conversion rate of electrical energy into light energy of more than 95% of the three types of lamps, LED touch temperature is the lowest.
Why LED display to choose LED lights rather than other types of bulbs?
After learning about the characteristics of LEDs, we realize that they produce less heat, which makes them ideal for use in large displays like LED displays.
The small thermal energy conversion of LED means that the material of the lamp body itself is less affected by high temperature, which makes the light emitting more stable and has a longer service life; the high light energy conversion of LED means higher brightness, higher utilization of electric energy and more energy saving.
In summary, the performance of LED is better than that of other bulbs, which is more in line with the requirements of electronic screen display. If you are interested in LED display, you can contact JYLED, we will give you more detailed information.
Summarize
After reading this article, I think you should have learned that, yes, even LED lights, will produce heat, but the same conversion of electricity, LED heat production is far lower than the traditional light bulbs, therefore, it is very consistent with the market demand, is used in light bulbs, displays, and other common in our daily life of a number of electronic devices.
