Light source module of LED street lamp

Abstract

The invention discloses a light source module of an LED street lamp, comprising a plurality of LED devices and an LED light source support body, wherein the LED devices are stuck to the light source support body; the LED devices mainly comprise PCBs, LED chips coated with fluorescent powder and transparent packaging bodies; the LED chips are arranged in the centers of the reflection cups of the PCBs; the transparent packaging bodies cover the LED chips; the lower parts of the transparent packaging bodies are filled with the reflection cups and are in contact with the LED chips; and the upper parts of the transparent packaging bodies are exposed outside the reflection cups. Since the transparent packaging bodies of the invention cover the LED chips, and the lower parts of the transparent packaging bodies are filled with the reflection cups and are in contact with the LED chips, the loss of light in the process of propagating from the LED chips to a target radiation area because different medium interfaces exist between a secondary optical lens and the LED devices when the secondary optical lens is adopted to carry out light distribution is avoided , and the integral luminous efficiency of the LED street lamp is improved.

Description

technical field [0001] The invention relates to the technical field of LED lighting, in particular to an LED street light source module. Background technique [0002] With the continuous improvement of LED luminous efficiency and reliability and the continuous reduction of production costs, the use of LEDs for road lighting has become a technical development trend in the lighting field. Although the photopic luminous efficacy of white LEDs is still lower than that of high-pressure sodium lamps, due to the wide spectrum of white LEDs, it is expected to obtain higher luminous efficiency than high-pressure sodium lamps in mesopic state by adjusting their spectral energy distribution reasonably. Moreover, due to the good orientation of the LED light source and the high utilization rate of light energy, the use of low-power LED street lights can replace high-power high-pressure sodium lamps, which has very prominent advantages in energy saving and emission reduction. In addition...

AI Technical Summary

Problems solved by technology

The disadvantage of this conventional LED street lamp structure is that the secondary optical lens must be used to meet the light distribution requirements. Since there is a gap between the secondary optical lens 3" and the LED device 1", there are different medium interfaces, which increases the light from the The loss during the propagation process of the LED chip to the target irradiation area leads to a decrease in the overall light efficiency of the LED street light source.

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