How can we determine whether the heat dissipation performance of a LED Street Light Die Casting meets the requirements of high-power LEDs?

1. Thermal Resistance and Heat Dissipation Temperature Threshold
According to industry standards, the maximum operating temperature of the heat sink should not exceed 65°C, and the overall thermal resistance of the luminaire should be controlled below 0.5°C/W to ensure that the LED core junction temperature remains below 85°C.
2. Thermal Simulation and Experimental Verification
Finite element thermal analysis was used to predict the temperature distribution. Field measurements then verified that the heat sink maintained a steady-state temperature of approximately 45°C in a 25°C environment, meeting the heat dissipation requirements of a 112W high-power luminaire.
3. Key Design Points for Heat Dissipation Structure
Multi-layer heat dissipation modules, embedded heat pipes, or phase change materials can significantly reduce thermal resistance. Ventilation holes within the die-cast housing create a "chimney effect" to enhance natural convection heat dissipation efficiency. 4. Jieda's Technical Support
Jieda boasts over 80 high-precision CNC, EDM, and automated die casting machines (1600T-200T), capable of die casting high-precision heat sinks and heat dissipation channels, ensuring a continuous and consistent heat conduction path.

How does surface treatment of LED Street Light Die Casting affect luminous efficiency and weather resistance?

1. Electrophoretic Spraying Improves Light Transmittance

Housings coated with electrophoretic spray can achieve light transmittance exceeding 93%, significantly improving the lamp's luminous efficiency and increasing actual luminous flux by approximately 5-10%.
This treatment also creates a uniform anti-corrosion layer, protecting against salt spray, acid, and alkali corrosion.
2. Weather Resistance of Anodizing and Powder Coating

Anodizing or powder coating provides a surface that is resistant to high temperatures, corrosion, and aging, maintaining its appearance and performance for over five years in highly corrosive environments such as coastal areas and industrial areas. In actual use, the light attenuation rate remains at <1%/1000 hours, significantly lower than that of untreated metal surfaces.
3. The Indirect Impact of Surface Roughness on Heat Dissipation

Fine surface treatment (Ra ≤0.8µm) helps improve the heat transfer efficiency of the heat sink, reducing the operating temperature of the LED chip by 5-8°C, further improving luminous efficacy by approximately 3% and extending lifespan.
4. Ningbo Jieda Molding & Machine Co., Ltd.'s Surface Treatment Capabilities
The company offers a variety of surface treatments, including sandblasting, polishing, priming, powder coating, ED coating, and anodizing. We can customize colors such as white, black, and gray to ensure both aesthetics and functionality.