It is normal for the LED lamp housing to have a certain temperature.
Our lighting sources include incandescent lamps, fluorescent lamps, energy-saving lamps, and LED lamps. Incandescent have the longest history of use, followed by more energy-efficient fluorescent lamps and energy-saving lamps, and now more energy-efficient LED lamps. Even though LEDs are more energy-efficient, they do not convert 100% electrical energy into light energy, so some of the electrical energy is lost in the form of thermal energy, so we feel the temperature of the LED housing.
The principle of LED lighting
LED belongs to a kind of diode and also has the characteristics of one-way conduction, but it can convert electrical energy into visible light. Common LEDs are red, green, orange, blue, white, etc. High-power white LEDs are used for lighting. The power of a single lamp bead is generally 0.5W or 1W. Those who need to install many lamp beads inside the LED lamp can meet the lighting needs. LED lamp beads are composed of chips, brackets, fluorescent powder, lenses, etc.
The chip is the core part of the LED. It consists of a P-type semiconductor and an N-type semiconductor. There is also a transition layer between the P-type semiconductor and the N-type semiconductor, which is called a PN junction like a diode. In a PN junction composed of special semiconductor materials, if the injected minority carriers and majority carriers recombine, the excess energy will be released in the form of light, which is what we see as visible light.
The principle of LED heating
Energy is conserved, it does not arise for no reason nor disappear for no reason. The LED light starts to work after it is connected to the power supply, because only about 20% of the electrical energy is converted into light energy, and the other energy can only be converted into heat energy. Because the chip size of the LED lamp bead is very small, the heat is concentrated in a relatively small place. If the heat is not dissipated in time, the temperature will be particularly high, which will also affect the life of the lamp bead. High-quality LED lights will install the lamp beads on the aluminum substrate, and a larger radiator will be installed behind the aluminum substrate so that the heat emitted by the lamp beads can be quickly and evenly dissipated. Even if we touch it, there is only warmth. The feeling, and will not feel the too high temperature.
Compared with incandescent lamps, fluorescent lamps, and energy-saving lamps, LEDs are more energy-efficient and are more and more widely used. Although the price of LED is still high, with the development and progress of LED technology, we believe that LED will be the trend of lighting in the future! What do you think?
