What innovative heat dissipation technologies does direct down led panel light have?
Publish Time: 2025-03-12
As an important product in the field of modern lighting, direct down led panel light has been widely welcomed for its advantages such as high brightness, high uniformity and long life. However, with the continuous increase in LED power, heat dissipation has become a key factor restricting its further performance improvement. In order to solve this problem, the industry has been constantly exploring and innovating heat dissipation technologies to improve the thermal management efficiency of direct down led panel light.
Limitations of traditional heat dissipation technology
Traditional direct down led panel light heat dissipation technology mainly relies on aluminum substrate or copper substrate for heat conduction, and dissipates heat through natural convection or forced air cooling. However, with the increase of LED power, this heat dissipation method gradually exposes its limitations. On the one hand, the heat dissipation efficiency of natural convection and forced air cooling is limited, and it is difficult to meet the heat dissipation needs of high-power LEDs; on the other hand, although the thermal conductivity of the metal substrate is good, it may still cause the temperature of the LED chip to rise under long-term high-load work, affecting the life and performance of the lamp.
Emergence of innovative heat dissipation technology
In order to overcome the limitations of traditional heat dissipation technology, a series of innovative heat dissipation technologies have emerged in the industry. These technologies mainly focus on improving thermal conductivity, increasing heat dissipation area and optimizing heat dissipation structure.
Heat pipe heat dissipation technology: Heat pipe heat dissipation technology is a heat dissipation method that uses the phase change process of the working medium inside the heat pipe for efficient heat transfer. In the direct down led panel light, one end of the heat pipe is in close contact with the LED chip, absorbs heat and evaporates into gas, which is quickly transferred to the other end through the tiny channel inside the heat pipe, where it condenses into liquid to release heat. This method has the advantages of high efficiency, stability and reliability, and can effectively reduce the temperature of the LED chip.
Graphene heat dissipation technology: As a new type of two-dimensional material, graphene has extremely high thermal conductivity and excellent mechanical properties. In the direct down led panel light, graphene can be coated on the LED chip or heat dissipation substrate as a heat dissipation material to form an efficient heat dissipation channel. Graphene heat dissipation technology not only has excellent heat dissipation performance, but also can effectively reduce the weight and volume of the lamp.
Liquid cooling heat dissipation technology: Liquid cooling heat dissipation technology is a heat dissipation method that uses liquid circulation to take away heat. In direct down led panel light, a micro pump and a piping system can be set up inside the lamp to circulate the coolant through the LED chip and the heat dissipation substrate to take away the generated heat. This method has the advantages of high heat dissipation efficiency and low noise, but the cost is relatively high.
Microgroove group phase change heat dissipation technology: Microgroove group phase change heat dissipation technology is a method of heat dissipation using the liquid phase change process in the microgroove structure. In direct down led panel light, a microgroove structure can be processed on the heat dissipation substrate and filled with liquid with high thermal conductivity. When the LED chip generates heat, the liquid in the microgroove will quickly evaporate into gas to take away the heat, and condense into liquid reflux away from the heat source. This method has the advantages of high efficiency and compactness, and is suitable for the heat dissipation needs of high-power LEDs.
With the continuous increase in the power of direct down led panel light and the continuous expansion of its application, heat dissipation will become a key factor restricting its further performance improvement. By continuously exploring and innovating heat dissipation technology and improving the thermal management efficiency of direct down led panel light, it will help promote its application and development in a wider range of fields. In the future, with the continuous emergence of new materials and new technologies, the heat dissipation technology of direct down LED panel light will usher in a broader development prospect.
