Does a LED light heat up as usual like any system based on an electrical current conductor, the LEDs produce a Joule effect which releases heat. However to produce an equivalent amount of light a LED heats up 90% less than an incandescent lamp and 80% less halogen. To check it physically:
- Cautiously approach a hand of an incandescent or halogen lamp in operation
- Approach LED light in operation
You will notice easily to notice that the temperature of the LED is insignificant compared to the two others.
What is the temperature of a conventional light?
Incandescence or halogen, Does a LED light heat up the operation rests on a filament crossed by an electric current. The gas (argon or krypton) contained in the glass envelope avoids the combustion and thus the melting of the filament which can only warm up with the passage of the current. Part of this heating is returned in the form of light, the other part is lost in the form of heat. The filament reaches about 2500 ° C for an incandescent lamp and 2700 ° C for a halogen. The glass surface can reach several hundred degrees for incandescent and halogen lights. This heating does not bring anything in terms of lighting but is one of the reasons for the consumption of these lamps and their energy inefficiency.
- What is the temperature of an LED light?
For an LED, the surface temperature is around 30 ° C for low power lamps and 50 to 60 ° C for the most powerful. In addition, this heat release even originally minimal is reduced by the multiplication of LEDs whose temperature dissipates through the surface covering the assembly and heat sinks installed directly in your LED light, LED Spotlight or projector LED.
Why does a LED light heat up so little?
For the simple reason that an LED does not work on the principle of a filament crossed by the electric current. The recombination of an electron and an electron hole in a semiconductor leads to the emission of a photon. Although the design of an LED is complex, we can summarize the operating mode like this.
Each electron contained in the LED only takes care of the energy it is able to store. These particular electrons called photons then dissipate energy in the form of light while their colleagues called phonons are they “specialized” in the heat dissipation, which explains why some lamps are dedicated to heating.
Electrons consume only the energy they are able to store, losses are reduced with a minimum of heat and maximum light, all associated with low consumption. It is then sufficient to multiply the LEDs to obtain high lighting powers and without significant heat release.
Choose the color temperature of its lighting
Warm White, Neutral White, Day White, or Cool White – How to choose your color temperature to achieve the desired light output?
What is the color temperature?
The color temperature represents the hue of a light source and is expressed in degrees, Kelvin. This characterizes the amount of red, yellow, blue and pure white produced by the projector LED. The effect is often characterized by the terms hot (warm white), neutral, natural or cold (white of the day).
This concept can be simplified by imagining the light produced by the sun at different times of the day:
- at noon, the light is at its highest and most powerful: natural white color
- at sunset, the light takes on a more yellow-orange tone: warm white color
From a general point of view, the lower the color temperature, the more light is orange-red. When the color temperature is high, the tone of the light is blue.
- The different color temperatures
LED lights exist mainly with three color shades
The warm white
– 2700 ~ 3000K: it is the most usual temperature color because it is very close to incandescent and halogen lights. This type of light is recommended for the entire house and the interior and office uses. Find your warm white light.
Neutral white or natural white
– 3900 ~ 4500K: it is the temperature color closest to pure white. Does a LED light heat up this shade is often used for bathrooms (make-up), kitchen and workspace. For exterior uses (LED spotlights), we recommend using this shade which produces a light close to natural light. Many stores or commercial surfaces use this color hue because the rendering is both modern and pleasant.
The cold white
– 5500 ~ 6400K: it is a cold color temperature with blue reflections. We do not recommend the use of this color except for very specific uses such as precision work, some warehouse, powerful outdoor lighting. Find your cold white light.
What does the term warm white mean?
What is warm white?
The warm white refers to a color, a hue of light, it is a light color included in 2600 and 3500K. This hue of warm white light corresponds to an orange to yellow light. Incandescent or halogen lights illuminate in warm white. It is therefore historically this hue of color that is most familiar to us.
LEDs in warm white are grouped into two broad categories:
- The warm white 2700K – which corresponds to a range between 2600 and 2900K is a yellow-orange hue close to incandescence
- The 3000K warm white – fork in 2900 and 3200K is a hue of yellow light whiter than incandescent.
When to use warm white lighting?
The warm white creates more peaceful, cozy atmospheres ideal for rooms such as:
- The lounge and the relaxation areas of the evening
- The bedrooms
- The dining room is either warm white or neutral according to taste
The warm white is the color of the sun at dusk, it is an ideal color temperature to use at the end of the day, more relaxing for the eyes.
What is the brightness of a warm white?
At equal power, a warm white is 10% less bright than a white of the day (6000K) and 5% less bright than a natural white (4000K). If you wish to have a maximum brightness then you must avoid the warm white.