LED light source

Abstract

The invention discloses an LED light source and an LED light source module formed by a plurality of the LED light sources. The LED light source comprises an LED luminous body and a reflector set, wherein the reflector set comprises two or more reflector units which are mutually independent; the horizontal cross section outline of the inner surface of each reflector unit is a straight line, or an inner arc-shaped curve, or an outer arc-shaped curve, or the combination of two line shapes; all reflector units are respectively arranged in different positions of the exterior of the LED luminous body, one reflector unit is respectively arranged before and after the front and rear sides of the LED luminous body, and the side wall of the reflector set is not closed, or discontinuous; one part of the ray sent out by the LED luminous body is reflected by the inner surface of the reflector set. The LED light source provided by the invention can achieve reasonable unsymmetric form batwing light distribution suitable for street lighting, so as to enable more rays to be guided to a direction having lighting utilization value, and unnecessary ray waste is reduced.

Description

technical field [0001] The invention relates to the technical field of LED lighting, in particular to an LED light source and an LED light source module composed of a plurality of such LED light sources. Background technique [0002] LED is easy to realize various forms of light distribution, and the corresponding LED light source can be formed through the primary light distribution process and the secondary light distribution process. The primary light distribution process is to package the lens on the packaging bracket in the process of making the LED package single lamp, so that it is integrated with the light-emitting chip, fluorescent glue and packaging bracket to form an LED single lamp. The common types of LED single lamps are: In-line type, SMD type, high-power package type, etc. Among them, the surface of the light-emitting chip is coated with fluorescent glue, and the lens is generally a silicone lens; this process is equivalent to a one-time realization in the pro...

AI Technical Summary

Problems solved by technology

The light distribution form obtained by the above two light distribution processes is a symmetrical batwing light distribution, that is: the C0-180 light distribution curve is a symmetrical batwing shape, and the C90-270 light distribution curve is a symmetrical approximately elliptical or approximately conical shape , but for street lighting applications, this form of light distribution is unreasonable, especially for motor vehicle lanes, this form of light distribution is lower than the utilization rate of lighting luminous flux of asymmetrical batwing light distribution

[0007] In the prior art, the process of realizing asymmetrical batwing light distribution through reflectors is: (1) An LED street lamp reflector module proposed by the Chinese patent application No. 201110414570.1. The light reflected by the polarized reflective surface is incident on the space area on the other side opposite to the polarized reflective surface, but there is no reflective structure on the opposite side of the polarized reflective surface of the reflector, causing the incident direction of some light to exceed the range of the lane, that is, it cannot be directly It irradiates the road surface of the road, causing a waste of light, which is reflected on the light distribution curve, that is, the beam angle of the curve on the C90-C270 plane is relatively large, especially the angle on the side of the positive angle is too large; (2) China with application number 201210584482.0 An LED light source module and its LED light source proposed in the patent application, and a LED light source proposed in the Chinese patent application with the application number 201310008008.8. The problem with these two technologies is the reflector with an asymmetric structure closed by the side wall , or a reflector with an asymmetric structure set around the LED single lamp on the side wall ring, so that the light is deflected to the side that is beneficial to street lighting, but the light is deflected to one side and the light is not evenly spread out according to the lighting range of the road surface , that is, the uniformity of illumination is not enough. The reason is that the reflector structures proposed by these two technologies are all closed side walls, or the side walls are ring-shaped and continuously surround the LED single lamp, which hinders the dispersion of light and reflects it to the distribution. On the light curve, that is, the maximum light intensity value of the curve on the C90-270 plane is obviously smaller than the maximum light intensity value of the curve on the C0-180 plane, and the maximum light intensity value of the curve on the C45-225 plane is obviously smaller than the maximum light intensity value of the curve on the C0-180 plane light intensity value

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