LED streetlight

Abstract

The invention discloses an LED streetlight, comprising a heat dissipating device and an LED light source; wherein, the heat dissipating device comprises a heat dissipating substrate and a heat sink; the LED light source comprises a heat-conducting stair and an LED chip on the stair; the heat dissipating substrate is hollow inside; the LED light source is positioned at the lower end of the hollow heat dissipating substrate; the inner wall of the hollow part of the heat dissipating substrate is axially provided with a heat-conducting channel which forms a loop; the lower end part of the heat-conducting channel is positioned at one end of the hollow heat dissipating substrate and the end is provided with the LED light source; fluid heat-conducting media are poured into the heat-conducting channel. With regard to the streetlight, the heat is rapidly dissipated to the heat sink by way of circulative convection and the liquefied heat-conducting media reflow by own gravity to achieve the effect of rapid heat dissipation, thus being a brand new heat dissipation technique.

Description

technical field [0001] The invention relates to a light source, in particular to an LED street lamp. Background technique [0002] Most of the LED street lamps in the prior art are composed of multiple or even hundreds of low-power LEDs scattered and arranged, which have the following disadvantages: 1. The light-emitting area is large, the surface brightness is low, and the light penetration is insufficient; Very bright and dazzling, in fact, the illumination of the road surface is not enough; 3. Many pieces are connected in series and parallel, and the power conversion rate is low; 4. Pedestrian ghosting on the road, etc. On the contrary, integrated packaged high-power LEDs have a smaller light-emitting area and higher surface brightness, so the directivity on the illuminated surface has certain advantages, making it easy for people to see the extension direction of the road in dense fog weather. The advantages are more obvious. Therefore, the integrated package type high...

AI Technical Summary

Problems solved by technology

[0002] Most of the LED street lamps in the prior art are composed of multiple or even hundreds of low-power LEDs scattered and arranged, which have the following disadvantages: 1. The light-emitting area is large, the surface brightness is low, and the light penetration is insufficient; Very bright and dazzling, in fact, the illumination of the road surface is not enough; 3. Many pieces are connected in series and parallel, and the power conversion rate is low; 4. Pedestrian ghosting on the road, etc.

Most of the existing sunflower aluminum radiators use copper plugs and plug heat pipes as the medium with strong thermal conductivity, but there are inevitably gaps between the copper, heat pipes, and radiators, which have a certain impact on heat transfer and cannot achieve relatively high performance. high thermal requirements

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