A cob light source light output structure and its application

Abstract

The invention discloses a light output structure of a COB light source, which is characterized in that it comprises: a grid (2) separating adjacent wafers (1), and the grid (2) includes criss-crossing cross-sections that are triangular The grid bar (3), the bottom end of the grid bar (3) is provided with several notches (5) for passing through the welding wire (4). The invention also discloses the application of a COB light source light output structure, which is characterized in that: the grid (2) is applied to COB light source products of various wattages. The light output structure of a COB light source and its application provided by the present invention solve the problem of low light output efficiency caused by the high chip density of the lighting COB light source in the prior art, and solve the problem of mutual absorption of light between chips when used, and have a structure Simple, low cost, high luminous efficiency, and good color temperature consistency of the light source, it is a very simple and practical COB light source structure.

Description

technical field [0001] The invention relates to a light emitting structure of a COB light source and its application, in particular to an integrated light emitting structure and its application which can effectively improve the luminous efficiency and uniformity of the light source. Background technique [0002] The conventional COB light source structure will lead to multiple total reflections of light inside the light source, resulting in increased light source heating, reduced luminous efficiency, and low light uniformity, especially for high-power COB light sources. decrease is more pronounced. like figure 1 Shown is the optical path diagram of the total reflection of the conventional COB light source structure. The total reflection of light 2 results in multiple total emission of light 2 at the interface between the filled silica gel and the air. Light 2 is not easy to exit the interface, resulting in the luminous efficiency of the chip. and uniformity are low. like ...

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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