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How Much Heat Does The LED Headlights Generate?
- Dec 07, 2018 -

The generation of light energy is generally accompanied by heat generation. The bulb generates heat during the process of illuminating. The process of illuminating the LED bulb is the conversion of electrical energy into light energy. In this conversion process, it is impossible to convert all electrical energy into light. Yes, according to the law of conservation of energy, the remaining part of the electrical energy is converted into heat. How much heat is generated? It depends on the luminous efficiency of the semiconductor light emitting diode. If the luminous efficiency of the light-emitting diode can reach 40% or 50%, then the remaining 60% or 50% of the electrical energy will be converted into heat energy in other forms. Under the work of the P-N structure, electrical energy is converted into various light sources that are visible to the naked eye through various media. Therefore, the luminous efficiency of the light-emitting diode should take into account factors such as the input rate of the current in the LED circuit, the luminous efficiency of the LED chip, and the light transmission rate outside the chip.


With the use of LED bulbs, the stability of the LED chip will increase, and the increase in temperature will further reduce the luminous efficiency, resulting in more heat generation, so that a vicious cycle of the product causes more problems. But how much heat does the LED bulb generate?


However, in fact, electrons transition from the N zone to the P zone, and when the P zone is recombined, the external electric energy is not directly converted, but the electron energy of the N zone is higher than that of the P zone, but only under the action of the external power plant. The electrons in the N zone are driven to move toward the P zone, and the energy difference between the electrons in the N zone and the P zone itself is not provided by the external power plant. This energy difference depends on the material of the LED itself. Therefore, to a certain extent, the main reason for the generation of LED thermal energy is that the LED luminous efficiency is not high, so that the electric energy can not be efficiently converted into light energy, and the excess energy is released in the form of heat energy. So at this stage, we must fundamentally improve the luminous efficiency of LEDs, for example, by increasing the packaging technology of LED chips, the rational use of LED resistors, and the efficient use of LED drivers to reduce heat generation.