Light emitting diode (LED) lamp and lampshade thereof

Abstract

The invention provides a lampshade. The cross section of the lampshade is in an arc shape and is intercepted along a line which is basically vertical to the longitudinal direction of the lampshade; the inner surface of the lampshade is provided with a first sawtoothed stripe; the tops of teeth of the first stripe face to the top of the arc shape obliquely and are arranged continuously and regularly along the inner surface of the arc shape; and the included angle of the upper end part of the first stripe and a first end part of an opening of the lampshade is 50-60 degrees, and the included angle of the lower end part of the first stripe and the first end part of the opening of the lampshade is 0-30 degrees. The invention also provides a light emitting diode (LED) lamp comprising the lampshade. In the lampshade provided by the invention, the first sawtoothed stripe is arranged at the inner surface of the arc shape, and the first sawtoothed stripe and the first end part of the opening ofthe lampshade take on a specified included angle, so that light emitted by a light source can be emerged onto the first sawtoothed stripe and then is refracted, and further the emergent direction of the light is changed into the direction towards the edge part of the lampshade, therefore, the technical problem that the existing LED lamp is brighter at the middle and darker at the edges is solved.

Description

technical field [0001] The invention belongs to the field of LEDs, in particular to a lampshade of an LED lamp. Background technique [0002] At present, the application of LED in the field of lighting is still a new technical field, but there are still many technical problems. Please refer to figure 1 As shown, it is a schematic structural diagram of an existing LED lamp. The LED lamp includes a light source 11, and the light source 11 is arranged on a PCB board 12. Above PC lampshade 14, the structure and appearance of its lampshade 14 are fully transparent without stripes; or as figure 2 As shown, regular ordinary stripes 141 are provided on the inner wall of the lampshade. However, the height of the stripes 141 is relatively low, close to a circular arc surface, and does not form many refraction surfaces. Because the light emission of the LED lamp is directional, the two sides of the lampshade cannot absorb much light, so there is a bright spot in the middle. Darker...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem of the existing LED lamp being bright in the middle and darker on the side, the present invention provides a lampshade for the LED lamp, which can effectively change the light emitting direction of the LED lamp, and solve the technical problem of the existing LED lamp being bright in the middle and darker on the side question

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