Light-emitting diode (LED) lamp

Abstract

A light-emitting diode (LED) lamp comprises a lamp cap body, a bulb casing, an LED light source, a light guide pillar and a lens. The bulb casing covers the top end of the lamp cap body, the LED light source is arranged on the top surface of the lamp cap body, the light guide pillar is arranged above the LED light source, and the lens is arranged above the light guide pillar and comprises a concave lens part and a side light outlet part. The concave lens part comprises an upper concave surface and a lower concave surface, the side light outlet part surrounds the concave lens part and is connected with the upper concave surface and the lower concave surface, the lower concave surface is arranged above the light guide pillar, the light guide pillar is used for enabling light emitted by the LED light source to be guided to the lower concave surface of the concave lens part, and the upper concave surface and the side light outlet part are used for scattering light which enters the lower concave surface. The LED lamp can achieve large-angle light emitting and has the advantages of being simple in structure and uniform in light distribution.

Description

technical field [0001] The invention relates to the field of LED lighting, in particular to an LED lamp. Background technique [0002] In recent years, due to the rapid development of the LED industry, LED lamps have gradually replaced traditional lighting fixtures; however, if the current LED lighting fixtures meet the requirements of large-angle light emission, the structure is often complicated, and the light distribution is very uneven. In order to make LED lamps replace incandescent lamps, it is necessary to overcome the problems of small lighting angle and uneven lighting of LEDs. The current technology is to arrange the LED light source on a three-dimensional bracket, and install the bracket on the top of the lamp cap, so that the LED light source is vertically arranged relative to the top surface of the lamp cap, so that the light emitted by the LED light source is emitted towards the direction around the whole lamp. For example, the date of authorization announceme...

AI Technical Summary

Problems solved by technology

Although the high-efficiency large-angle LED bulb can emit light at a large angle, because the high-efficiency large-angle LED bulb has a bracket and needs to solder LED chips on each PCB, the assembly is complicated; and the light output point is on the upper side. In some parts, the light output is still incomplete and there are dark bands. In addition, the colored parts in the bulb are visible, and the appearance is not ideal when it is not lit.

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