A led fluorescent lamp

Abstract

The invention discloses an LED daylight lamp comprising a lamp body, a first PCB (printed circuit board), a plurality of light sources and a light-guide plate. The first PCB is arranged on the inner side of the lamp body on the lengthwise direction, the LED light sources are fixed on the first PCB, and the lower portion of the light-guide plate is clamped in the lamp body and the top portion covers a light-emitting port of the lamp body. The light-guide plate is longitudinally divided into a light-entering face, a reflecting back surface, a reflecting side face and a light-emitting top face. The light-entering face of the light-guide plate aligns to the LED light sources of the first PCB, the reflecting base surface is a smooth spline surface which gradually rises from the bottom of the light-entering face and turns gently at a position close to the reflecting side face, the reflecting side face is connected with the reflecting back surface and the light-emitting top face to be parallel to the light-entering face, and the reflecting base surface and the reflecting side face are coated with light-reflecting coatings. Due to the fact that the light sources emit light from the lateral side, and the reflecting faces of the light-guide plate are coated with the light-reflecting coatings high in reflectance, light rays emitted are uniform and soft, and lighting effect is high, and exceeds that of the like products by over 20%.

Description

technical field [0001] The invention relates to a lamp, in particular to an LED fluorescent lamp. Background technique [0002] With the rise of LED in recent years, LED fluorescent lamps have gradually become the main force in the fluorescent lamp family. Conventional LED fluorescent lamps are composed of PCB boards with LED light sources, lampshades and diffuser plates. LED fluorescent lamps using diffuser plates often show glare and are too bright in parts, so human eyes will feel uncomfortable, and the illuminance of fluorescent lamps with this structure is also low. not enough. In response to this situation, some people in the industry have begun to use light guide plates, or light guide plates + diffuser plates to replace traditional diffuser plates. High-tech materials, use UV screen printing technology to print light guide points on the bottom of the optical-grade acrylic sheet, use the optical-grade acrylic sheet to absorb the light from the lamp to stay on the su...

AI Technical Summary

Problems solved by technology

The flat light guide plate is thick and heavy, and it is a direct-type light guide, that is, the luminous body (lamp tube or LED) is placed under the light guide plate. Optimal design of the secondary light distribution curve, the uniformity is not high, and the light efficiency is low