LED (light emitting diode) streetlamp lens and LED streetlamp system

Abstract

The invention provides an LED (light emitting diode) streetlamp lens and an LED streetlamp system comprising same. The LED lens is installed on a light source installation plate of a streetlamp, the lens is symmetric about a direction which is vertical to the extension direction of a road after being installed, and the lens comprises an installation surface, an inner curved surface and an outer curved surface, and the installation surface is connected with the inner curved surface and the outer curved surface; the inner curved surface forms an inner cavity for installing an LED chip; on a sectional drawing of a symmetric surface of the lens, the curve rate of an arc line of the outer curved surface is gradually reduced along the increasing direction of the curve rate of an arc line of the inner curved surface; and the inner curved surface of the lens is connected with the installation surface of the lens through a transitional arc surface, and the bending direction of the transitional arc surface is opposite to the bending direction of the arc surface of other parts except the transitional arc surface on the inner curved surface. By adopting the lens, the light energy can be more reasonably allocated, the light brightness distribution is more uniform, the possibility for producing the glare can be reduced, the utilization rate of the road can be increased, more reasonability for the light distribution of the large-power LED streetlamp encapsulated by COB (chip on board) can be realized, and the application range is wider.

Description

technical field [0001] The invention relates to the field of road lighting, more specifically, to an LED street lamp lens and an LED street lamp system. Background technique [0002] Street lamps are an important part of urban lighting. Traditional municipal lighting fixtures mainly use sodium lamps, mercury lamps or metal halide lamps, but these lamps consume a lot of power, have a short life, high maintenance costs, and are not conducive to environmental protection. Therefore, the development of new street lamps with high efficiency, energy saving, long life, high color rendering index and environmental protection is of great significance to the energy saving of urban lighting. [0003] As a new type of light source, light-emitting diode (Light-Emitting Diode, referred to as LED) has developed rapidly in the new lighting industry due to its advantages of small size, bright light, energy saving, and no pollution. High-pressure sodium, mercury, and metal halide lamps are go...

AI Technical Summary

Problems solved by technology

[0007] In view of this, the present invention provides an LED street lamp lens and an LED street lamp system to solve the poor light color uniformity and uniform brightness obtained when the LED street lamp lens distributes light to a high-power COB-packaged LED street lamp in the prior art. Low intensity, low glare threshold, easy to cause glare and low road utilization

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