LED (light emitting diode) lamp tube with front-mounted light and heat-conducting glass pipe lens and manufacturing method of LED lamp tube

Abstract

An LED (light emitting diode) lamp tube with a front-mounted light and heat-conducting glass pipe lens and a manufacturing method of the LED lamp tube are characterized in that a COMMB-LED light source assembly is arranged at the outer wall of a glass pipe along the axial direction; due to the higher heat conductivity and light transmission of glass, heat emitted from a luminous chip of the COMMB-LED light source assembly is outward conducted along the glass pipe wall at the light outgoing end to form a second radiating channel besides being outward conducted along a good conductor bottom plate, so the junction temperature in an LED chip is lower. The safety of insulation on high voltage of the lamp body is realized by adopting a carrier of the COMMB-LED light source assembly as a non-closed insulation section bar. A pull line storing hole (slot) is formed along the axis (length direction), so mounting and maintaining are facilitated, subsequent mounting procedures are simplified, and the product manufacturing cost is reduced under the premise that the LED lamp tube quality is ensured.

Description

technical field [0001] The invention relates to an LED lamp tube in which the LED is used as a luminous body. In particular, a COMMB-LED light source assembly is used as a light source, and the branch body of the light source group is a non-closed insulating profile, and the LED tube with the front light-conducting and heat-conducting glass tube as the lens. Background technique [0002] Existing LED light tubes mostly use a single lamp bead LED as the illuminant and paste it on the PCB board with thermally conductive adhesive. After completing the circuit connection, paste it on the heat-dissipating and heat-transfer aluminum profile. Manufactured, and the aluminum profile is exposed to achieve good heat dissipation. As far as the existing LED tubes are used as illuminants, in order to ensure their practical safety, series connection and multi-set parallel connection below 48v are used, so that the output current of the power supply is large, the heat loss of the power sup...

AI Technical Summary

Problems solved by technology

Whether the illuminant uses a rectangular electrode in-line lamp bead as the illuminant, or uses a PCB-type aluminum substrate to directly bond the LED chip as the illuminant, or uses a patch-type lamp bead bonded to the PCB, because The integrated power of the lighting source is large and the choice of heat dissipation treatment is limited, which limits the application of LED illuminants. The technical improvement measures adopted to overcome this limitation increase the difficulty of processing and also greatly increase the cost

From the point of view of the heat dissipation of the entire fluorescent tube, the control of the chip junction temperature at the chip is the key, so as long as the core heat of the chip can be quickly transferred outside, the chip junction temperature can be effectively controlled, and the existing aluminum shell and PC cover alloy The way of heat dissipation, due to the addition of a PCB circuit board in the middle to cover the insulation (heat insulation) layer and multiple bonding of the adhesive layer, the thermal resistance becomes larger, so that the rapid transfer of the focus heat cannot be well realized.

Due to the requirement of improving the conversion efficiency of the circuit, the high-voltage series LED layout method has gradually become the mainstream of LED fluorescent tubes. Therefore, high-voltage insulation requirements must be put forward for the insulation of the shell that can be touched by the human body to ensure the safety of the lamp tube. Sex, the existing structure has potential safety hazards

Another kind of LED lamp tube adopts the heat dissipation and heat transfer aluminum profile to be built into the inner wall of the glass cover tube along the axial direction, so that the LED as the luminous body directly fits closely with the inner opening of the aluminum profile, so that the heat on the mirror aluminum plate is quickly transferred to the heat dissipation and heat transfer aluminum On the profile, the aluminum profile and the glass cover are seamed and made. Due to the high heat transfer and light transmittance of the glass cover, the temperature field in the closed space formed by the LED as the illuminant and the glass cover is uniform, which makes the node of the LED chip The heat dissipation state has been improved, and the high-voltage insulation characteristics of the shell that the human body can touch have been guaranteed, but the cost has increased due to the use of aluminum profiles, and the high cost performance of the product has not been realized.

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