Light emitting diode (LED) reflector and LED lamp

Abstract

The invention relates to a light emitting diode (LED) reflector and an LED lamp. The LED reflector comprises four light reflection surfaces connected with one another, wherein each light reflection surface is formed by stretching the two sides of a broken line along the direction vertical to the plane where the broken line is located; the stretched broken lines of the opposite light reflecting surfaces are the same; and the stretched broken lines of the adjacent light reflecting surfaces are different. The LED lamp comprises an LED light source and the LED reflector, wherein the LED light source is arranged at the bottom end of the LED reflector; and the optical axis of the LED light source is superposed with the axis of the reflector. According to the invention, the light reflection surfaces are formed by stretching the broken lines, so that the reflector formed in the way can meet the light distribution requirement of the flood illumination and has a greatly reduced size; and therefore, the size of the LED lamp is reduced; and due to the different stretched broken lines of the adjacent reflection surfaces, the light distribution effect in a rectangular illumination range can be achieved.

Description

technical field [0001] The invention relates to the field of lighting lamps, and more specifically, to an LED reflector and an LED lamp. Background technique [0002] With the rapid development of high-power LED technology, more and more LEDs are used as light sources in the lighting field. When the LED light source is not reflected by the reflector or refracted by the lens, its luminous light distribution characteristics conform to the radiation law of the Lambert (J.H.Lambert) luminous body. This type of luminous body is also called a cosine luminous body. Its luminous intensity is dI and cosθ is positively correlated, that is, its brightness B has nothing to do with the direction, where dI is the luminous intensity of each surface element dS of the extended light surface along a certain direction r, and θ is the angle between r and the normal n. When the light emitted by the LED light source is not distributed, its illumination intensity is very uneven. In order to obtai...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an LED reflector and an LED lamp with a sufficiently small size in view of the above-mentioned oversized defect of the LED reflector in the prior art, so that the LED lamp can meet the illuminance requirements. The volume is as small as possible, and the light distribution effect with a rectangular irradiation range can be realized

Images