LED road lamp light source with light distribution

Abstract

A light source of an LED street lamp having light distribution comprises a metal heat conducting base, an LED crystal grain array, a bonding golden wire, a positive and a negative power supply flow deflectors, a fixed support, a silica gel lens, etc. The metal heat conducting base is provided with a drop pit used for being installed with LED crystal grains which are fixed inside the drop pit of the metal heat conducting base; after each group of crystal grains are connected in series, the positive pole and the negative pole of the crystal grain are respectively welded with wire connecting terminals on a positive wire solder plate and a negative wire solder plate, and a wafer array is encapsulated by silica gel. The light source is characterized in that the light source of the LED street lamp is provided with a plane metal heat conducting surface and two symmetrical luminous surfaces which have a certain included angle, and the two luminous surfaces are respectively provided with a silica gel lens having light distribution in a symmetrical way. The silica gel lens is fixedly arranged on the LED crystal grain array which is coated with fluorescent powder in the fixed support on the two luminous surfaces by adopting the method of mould pressing and encapsulation. Two light emitting surfaces can flexibly control the illumination scope and effect according to the luminous intensity requirements; the structure (being similar to a lens) for encapsulating the silica gel of the invention can change the emergence angle of light ray, thus obtaining ideal luminous spot effect; compared with the secondary light distribution of an optical lens, the light source can reduce the loss of light and ensures the light emitting efficiency of the LED light source to be higher. The generation and application of the technical products can lead the LED street lamp to achieve or exceed the illuminating effect of the traditional street lamp, thus realizing the green lighting in the true sense.

Description

technical field [0001] The invention relates to a light source for illumination, specifically an LED light source for street lamps with a light distribution function. Background technique [0002] With the increasing global energy and environmental problems, people pay more and more attention to energy-saving and environmental protection products, and the energy-saving and environmental protection effects of semiconductor diodes (LEDs) in the lighting field have been more and more widely recognized. Therefore, technicians have invented a variety of LED light sources, common ones are single LED light source and multiple integrated LED light sources, but these light sources usually have some defects such as small luminous flux and directional light emission, and it is difficult to meet the high light distribution and The requirement of high luminous flux is difficult to popularize and apply, which seriously restricts the application prospect of this energy-saving product. Co...

AI Technical Summary

Problems solved by technology

Therefore, technicians have invented a variety of LED light sources, common ones are single LED light source and multiple integrated LED light sources, but these light sources usually have some defects such as small luminous flux and directional light emission, and it is difficult to meet the high light distribution and The requirement of high luminous flux is difficult to popularize and apply, which seriously restricts the application prospect of this energy-saving product

Images