COB light source light emitting structure and application thereof

Abstract

The invention discloses a COB light source light emitting structure, and is characterized in that the structure includes gratings (2) which separate adjacent chips (1), the grating (2) includes longitudinally and transversely staggered grid bars (3) whose cross sections are triangular, and the bottoms of the grid bars (3) are provided with a plurality of gaps (5) used for bonding wires (4) to pass. The invention also discloses application of the COB light source light emitting structure, and is characterized by application of gratings (2) in COB light source products of various watts. The COB light source light emitting structure and application thereof provided by the invention solve the problem of reduced light-emitting efficiency of an illuminating COB light source which is caused by large chip density in the prior art, and in use, solve the problem of mutual absorption of emitted light between chips, and the COB light structure has the characteristics of simple structure, low cost, high light efficiency, relatively good light source color temperature consistency and the like, and is very concise and practical.

Description

technical field [0001] The present invention relates to a light output structure of a COB light source and its application, in particular to an integrated light source light output structure capable of effectively improving the luminous efficiency and uniformity of a light source and its application. Background technique [0002] The conventional COB light source structure will cause multiple total reflections of light inside the light source, resulting in increased heat generation, reduced luminous efficiency, and low light uniformity. Especially for high-power COB light sources, the chip density is higher than that of a single SMD light source. decrease is more pronounced. Such as figure 1 Shown is the light path diagram of the total reflection of the conventional COB light source structure. The total reflection of light 2 causes multiple total emission of light 2 at the interface between the filled silica gel and the air. and low uniformity. Such as figure 2 Shown is...

AI Technical Summary

Problems solved by technology

[0002] The conventional COB light source structure will cause multiple total reflections of light inside the light source, resulting in increased heat generation, reduced luminous efficiency, and low light uniformity. Especially for high-power COB light sources, the chip density is higher than that of a single SMD light source. more pronounced reduction

like figure 1 Shown is the light path diagram of the total reflection of the conventional COB light source structure. The total reflection of light 2 causes multiple total emission of light 2 on the interface between the filled silica gel and the air. and uniformity are low

like figure 2 Shown is a schematic structural diagram of a conventional COB light source structure, image 3 for figure 2 In the enlarged picture of part B, the conventional COB light source has a simple structure, no light output structure, total reflection cannot be reduced, and the luminous efficiency and uniformity of the light source are low

[0003] In addition, the density of the chip in the conventional COB light source structure should not be too large. If the density is too high, the relative area of ​​the chip on the heat dissipation substrate will increase, and the relative amount of reflected light absorbed by the surface of the chip will increase, resulting in low overall light extraction efficiency.

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