Light-emitting diode (LED) street lamp

Abstract

The invention relates to a light-emitting diode (LED) street lamp, which comprises an optical cavity with two LED high-power integrated light sources, a power cavity which supplies electric energy to the LED high-power integrated light sources and a radiating device, wherein the optical cavity is formed by covering a lamp body upper cover on a lamp body lower cover; a sealing structure is arranged between the lamp body upper cover and the lamp body lower cover; the two LED high-power integrated light sources are symmetrically arranged on the left and right sides of the interior of the optical cavity by using a central axis relative to the vertical direction of the lamp body upper cover as a starting point and inclining lower edges of the LED high-power integrated light sources outwards by 5 to 45 DEG; and the two LED high-power integrated light sources form downward inner installation angles of 10 to 90 DEG. The LED street lamp has the advantages that: the two LED high-power integrated light sources which irradiate each other can be used for expanding a light irradiation range, so a dark area cannot be generated between two adjacent lamps, and illumination uniformity is improved; meanwhile, a reflector is arranged in the optical cavity, so the upward residual light of the light sources is completely reflected in a controllable range of irradiating points in the center of the lamp, and brightness can be improved.

Description

technical field [0001] The invention relates to an LED street lamp. Background technique [0002] The light distribution structure of existing LED street lamps mainly has the following two forms: [0003] (1) Use a single LED point light source. The light distribution structure of this point light source must pass the secondary light distribution. A filter is used on each point light source to control the direction of light. The lamp will affect the design of the light distribution structure of the lamp. 10%~15% light loss due to the light source with the filter, and the filter is made of plastic, which will age and turn yellow when used in a high temperature environment for a long time, which will gradually increase the light loss of the lamp; [0004] (2) Use a small-volume high-power integrated light source. There is a high-power integrated light source installed in the optical cavity of this street lamp. In order to expand the irradiation area of ​​the light emitted by ...

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Problems solved by technology

[0003] (1) Use a single LED point light source. The light distribution structure of this point light source must pass the secondary light distribution. A filter is used on each point light source to control the direction of light. The lamp will affect the design of the light distribution structure of the lamp. 10%~15% light loss due to the light source with the filter, and the filter is made of plastic, which will age and turn yellow when used in a high temperature environment for a long time, which will gradually increase the light loss of the lamp;

[0004] (2) Use a small-volume high-power integrated light source. There is a high-power integrated light source installed in the optical cavity of this street lamp. In order to expand the irradiation area of ​​the light emitted by the light source, a concave-convex mirror is added. This lamp has no scientific design. The light distribution structure design cannot meet the requirements of road lighting

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