LED (Light-Emitting Diode) tube and manufacturing method thereof

Abstract

The invention discloses an LED (Light-Emitting Diode) fluorescent tube. The LED fluorescent tube is provided with diffusion films which are arranged along the length direction of the inner tube wall of the tube in an arc shape and have a light equalizing and diffusion function; the bracket part of the tube is provided with a rubber ring pad with adaptive glass tube wall thickness and pipe diameter change; a power supply part is a function module combined switch power supply consisting of a power supply front rectifying and PFC (Power Factor Correction) value compensation module and a rear drive chip and filtering capacitor module separately arranged at the two ends of the tube; the outer cover of the tube is a transparent glass tube; the load bearing part of the LED chip is a mirror-surface good heat conductor plate; since the heat conduction and transfer aluminum section is bonded with the glass cover, the heat is quickly transferred to the outer surface of the glass cover and uniformly dissipated along the circumferential direction in a sealing cavity at the same time; and red fill-in light transparent pigment penetrates into the section of the diffusion film to form red fill-in light, and the color rendering of the light of the LED fluorescent tube is improved.

Description

technical field [0001] The invention relates to an LED lamp tube with an LED as a luminous body, in particular to a fluorescent lamp tube with a COMMB-LED integrated surface light source as a luminous body. Background technique [0002] Existing LED lamp tubes mostly use LEDs with independent beads as the illuminant, paste them on the PCB board with solder paste, and then attach them to the heat-dissipating and heat-transfer aluminum profiles. The aluminum profiles used as the outer cover are seamless with the PC cover. Fastening production, although the temperature of the aluminum profile is only about 55°C when the fluorescent tube of the LED as the illuminant is turned on, in order to achieve the purpose of eliminating string light and uniform light, a PC cover mixed with diffusing powder is installed on the light-emitting surface, but due to The poor heat transfer ability of the PC cover makes the temperature of the closed space formed by the LED as the illuminant and th...

AI Technical Summary

Problems solved by technology

The first method has limited improvement in heat dissipation, especially for fluorescent tubes with a closed inner cavity, reducing the ambient temperature of the closed cavity on the light-emitting side becomes the main contradiction. The second method increases the power consumption of LED fluorescent tubes and the manufacturing cost In addition, the possibility of failure in use increases. Although the third method solves the heat dissipation problem well and makes the temperature field in the entire airtight tube uniform, but due to the structural characteristics of the existing PCB board, the LED is used as the light output end of the luminous body. The opposite surface cannot be processed into a highly reflective surface, so the light output efficiency is reduced by 20% to 30%

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