Roadside Lampshade

Aluminum die-cast lamp shades have significant advantages over plastic and iron ones. Plastic shades are prone to aging, brittleness and deformation under high temperatures, with a service life usually less than 3 years; iron shades are heavy, easy to rust and have poor impact resistance. Leveraging the low density of aluminum alloy (2.7g/cm³), aluminum die-cast lamp shades achieve lightweight-products with a 30cm diameter weigh only 1.5-2kg, reducing the load on lamp poles. Meanwhile, with a tensile strength exceeding 200MPa, they can resist flying stone impacts and vehicle scratches. Combined with anodizing treatment, their weather resistance can reach 5-8 years, perfectly adapting to complex outdoor environments.

Heat dissipation is a core requirement for outdoor street lamps. For LED bulbs, their service life decreases by 30% for every 10℃ increase in temperature. Aluminum die-cast lamp shades solve this problem through a "material + structure" dual design: Aluminum alloy itself has a thermal conductivity of 120-150W/(m·K), more than 10 times that of plastic. During production, uniform heat dissipation ribs are reserved on the inner wall of the shade. When closely attached to the lamp body, they can quickly conduct heat to the surface and dissipate it through air convection. In practical applications, they can reduce the working temperature of LED bulbs by 15-20℃, extending their service life from 30,000 hours to over 50,000 hours.

Precise light control is achieved through sophisticated technology. Aluminum die casting can reach IT12 level dimensional accuracy, with surface roughness controlled within Ra 3.2-6.3μm, which can perfectly replicate subtle optical structures such as prisms and curved surfaces on the mold. Exclusive light distribution curves are designed for different scenarios-for main roads, "batwing light distribution" is used to focus light on the 0-30m range of the road surface; for residential area street lamps, a diffuse reflection structure is adopted to control the light projection angle within 120°, preventing light from directly shining into residents' windows or spilling into the sky, effectively reducing light pollution.

They have excellent environmental adaptability. For humid environments, an integrated die-casting process is adopted, with no splicing gaps, preventing rainwater and moisture from seeping into the lamp body; the surface anodizing treatment forms an oxide film of 5-10μm thickness, with salt spray corrosion resistance of over 500 hours, suitable for humid coastal areas. To deal with sand and dust, the shade surface uses smooth electrostatic spraying to reduce sand adhesion, and the tight sealing structure can prevent sand and dust from entering the lamp body and abrading LED bulbs, ensuring long-term stable operation even in grassland dusty areas.

The cost is significantly lower than that of traditional materials. For installation, the lightweight feature (single weight 1-2kg) allows workers to complete replacement without heavy equipment alone, reducing traffic control time by more than 50% during main road lamp maintenance. For maintenance, due to strong weather resistance and long service life, the annual maintenance cost of aluminum die-cast lamp shades is only 1/3 of plastic shades and 1/2 of iron shades. Moreover, the integrated structure reduces component wear, and basically no replacement is needed within 5-8 years, greatly reducing long-term operation and maintenance investment.

They fully conform to the "dual carbon" concept. On the production side, the utilization rate of aluminum alloy materials is over 95%, far exceeding 70% of iron sheets. The leftover materials generated during production can be 100% recycled and remelted, and the recycling energy consumption is only 5% of primary aluminum production. On the application side, no harmful chemicals are released, and they can be recycled after disposal to avoid environmental pollution. Compared with plastic shades that are difficult to degrade and iron shades with low recycling value, aluminum die-cast lamp shades realize the whole life cycle of "production - use - recycling" green environmental protection.