High-power LED street light

Abstract

The invention relates to a high-power LED street light which consists of an electric part, a heat transfer part, an optical part and a supporting and preventing part, wherein the electric part comprises a power supply, an LED chip and a thermoelectric isolation device; the heat transfer part comprises a radiating substrate with an internal radiating channel, an aluminum radiating body also provided with an internal radiating channel, a tubule and a thermoelectric isolation device; the radiating channel in the radiating substrate and the radiating channel in the aluminum radiating body are communicated through the tubule to form a radiating loop, and a heat transfer medium is filled in the radiating loop; the optical part comprises LED grains on the LED chip, chip silica gel, fluorescent powder and a lens according to an optical path; the supporting and preventing part comprises a plastic cover, a mesh cover and a fastening piece; the aluminum radiating body is arranged in the plastic cover, and the mesh cover is arranged at an opening part of the plastic cover; the lens is fixed on the radiating substrate by using a clamp; the radiating substrate, the power supply and the LED chip are respectively arranged in a larger space between the aluminum radiating body and the mesh cover; the LED chip is tightly adhered to the radiating substrate and positioned at the side near to the mesh cover; and the power supply is positioned at the side close to the aluminum radiating body. According to the high-power LED street light, high-efficiency heat transfer is a core technology, thereby bringing a corresponding matched design of the power supply and a power supply circuit.

Description

Technical field [0001] The invention relates to a lighting device using LEDs as light sources, in particular to a high-power LED street lamp. Background technique [0002] At present, the heat dissipation of all LED street lamp chips in use is based on the traditional heat transfer mechanism and corresponding heat transfer technology. Various efforts to improve heat transfer technology (including the use of heat pipes, fins, and the use of chip base materials with excellent thermal conductivity) on all heat transfer paths are still difficult to break through the bottleneck of chip heat dissipation. Especially for high-power LEDs, the problem is more prominent, resulting in higher light decay of LED street lamps, which affects the popularization and use of LED street lamps. [0003] The three serious defects of LED street lamps can be attributed to: poor comprehensive heat dissipation effect; large weight; poor reliability. [0004] The above questions are specifically explained as ...

AI Technical Summary

Problems solved by technology

The regulated power supply passes a large current, generates a large amount of heat, and has a high failure rate. It is difficult to prevent the sudden possibility of turning off the light.

The power supply and chip are closely attached to the metal shell, which is easily damaged by lightning strikes and high-voltage leakage, thus becoming a risk factor affecting the reliability and stability of LED street lights

Street lamps have a short working life

[0007] The regulated power supply used in LED street lamps increases the weight of the lamp body

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