Rectangular (Light Emitting Diode) reflector and LED light fitting

Abstract

The invention relates to a rectangular (Light Emitting Diode) reflector and an LED light fitting, wherein the rectangular LED reflector comprises four connected light reflection surfaces, the shape of each light reflection surface is formed by stretching a broken line segment towards the two sides of the broken line segment along a direction vertical to the plane of the broken line segment, the stretching broken lines of opposite light reflection surfaces are identical, and the stretching broken lines of adjacent light reflection surfaces are different; and the LED light fitting comprises an LED light source and the rectangular LED reflector, the LED light source is arranged on the bottom end of the rectangular LED reflector, and the optical axis of the LED light source is overlapped with the axial line of the reflector. The light reflection surface in the invention is formed by stretching the broken line segment, so that the formed reflector can greatly reduce the volume of the reflector when meeting with the light distribution demand of floodlight illumination so as to reduce the volume of the LED light fitting, and the stretching broken lines of the adjacent light reflection surfaces are different to realize the light distribution effect within a rectangular illumination range.

Description

technical field [0001] The invention relates to the field of lighting lamps, and more specifically, to a rectangular 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 ord...

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Problems solved by technology

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

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