SMD type LED flexible lamp band

Abstract

The invention discloses an SMD type LED flexible lamp band and belongs to the field of illumination. The SMD type LED flexible lamp band comprises a core wire, a coating layer coating the core wire, a plurality of flexible circuit boards and a plurality of SMD type LED chips arranged on the flexible circuit boards. The core wire is provided with a containing channel in the length direction of the core wire. The flexible circuit boards are sequentially arranged in the containing channel. The side wall of the core wire is sequentially provided with through holes. The SMD type LED chips are contained in the through holes. The core wire is provided with a placement groove for allowing the flexible circuit boards to be placed into the core wire. Silica gel is adopted to serve as a packaging adhesive material in LED chip insulating base containing cavities. The coating layer is made of a silica gel material. The core wire is made of a PVC material or other plastic. According to the SMD type LED flexible lamp band, the stable quality can be ensured, and the light transmittance performance can be stably kept for a long time.

Description

technical field [0001] The invention relates to the lighting field, in particular to a patch type LED flexible light strip. Background technique [0002] With the continuous improvement of people's living standards, the use of LED light strips is becoming more and more popular. In the prior art, Chinese patents with publication numbers CN104763914A disclose a patch-type LED flexible light strip, which includes a flexible core wire, a flexible coating layer covering the core wire, several flexible circuit boards and A plurality of SMD LED chips arranged on the flexible circuit board, the core wire is provided with an accommodating channel along its length direction, the flexible circuit board is sequentially arranged in the accommodating channel, the core wire The side walls are sequentially provided with through holes, the patch LED chips are at least partially accommodated in the through holes, and the core wires are provided with inserting grooves. The LED chips of the e...

AI Technical Summary

Problems solved by technology

In actual use, the covering layer and core wire of the light strip product are made of PVC material, and the covering layer is directly extruded on the basis of the core wire through an injection molding machine. , due to the different materials, the coating layer does not combine with the surface of the packaging silicone in the insulating seat cavity of the chip. The inner surface of the coating layer forms a reflective surface on the LED chip, and part of the light emitted from the LED chip passes through the inner surface of the coating layer. Reflected back, affecting the amount of light emitted

In addition, PVC will change color under high temperature and ultraviolet light conditions, and the light transmission will deteriorate. For example, it will start to decompose and change color at 130°C, and the light transmission will deteriorate. PVC will release corrosive substances at high temperatures, which will corrode the insulating seat that is in contact with the chip. Silicone is packaged in the housing cavity, which leads to deterioration of the packaged silicone and blurred light output

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