White light LED lighting device and manufacturing method thereof

Abstract

The invention discloses a white light LED illuminating lamp which includes a lamp housing (1), a cool color LED light source (2) arranged in the lamp housing (1) and connected with a constant current regulated power supply, and a light pervious carrier (4) coated with a fluorescent material layer; the invention also includes a light pervious layer (3); the cool color LED light source (2) and the light pervious layer (3) are sealed in the same space; the light pervious carrier (4) coated with the fluorescent material layer is arranged in front of the light pervious layer (3); and the air space is left between the light pervious carrier (4) and the light pervious layer (3). The manufacturing method thereof comprises the steps as follows: the cool color LED light source is prepared; the prepared cool color LED light source (2) is sealed with the light pervious layer (3) and is arranged in the lamp housing (1); the light pervious carrier (4) coated with the fluorescent material layer is arranged on the lamp housing (1) in front of the light pervious layer (3) to form the white light LED. The white light LED illuminating lamp of the invention can greatly reduce glare, and has ideal heat dispersion and flexible overall pattern.

Description

technical field [0001] The invention relates to a lighting fixture and a manufacturing method thereof, in particular to a white LED lighting fixture and a manufacturing method thereof. Background technique [0002] The structure of the white light LED lamps in the prior art is generally such that the LED chip that produces blue light or blue light + green light is closely attached to the fluorescent material layer and packaged in a closed space to form a white light LED. The characteristic of this structure is that the LED chips that produce blue light or blue light + green light and the fluorescent material layer form a whole and cannot be separated from each other. This structure has the following drawbacks: [0003] 1. Due to the limitations of the combination of LED chips and fluorescent material layers that produce blue light or blue light + green light, and the fluorescent material layer that forms white light is affected by the packaging process and limited by the li...

AI Technical Summary

Problems solved by technology

[0003] 1. Due to the limitations of the combination of LED chips and fluorescent material layers that produce blue light or blue light + green light, and the fluorescent material layer that forms white light is affected by the packaging process and limited by the limited heat dissipation area of ​​the base, the area of ​​the finished LED cannot be limited. Make it larger, so that the area of ​​the fluorescent material layer is smaller, resulting in more serious glare of the finished white LED lamps

[0004] 2. Since the LED chip is closely attached to the fluorescent material layer and is packaged in a closed space, the heat generated by the red light component in the light beam cannot be removed in time. On the one hand, the temperature of the fluorescent layer is increased, which affects the temperature of the fluorescent layer. On the other hand, part of the heat generated needs to be dissipated by the LED chip base after being absorbed by the LED chip. However, the heat dissipation effect of the base of this structure is not ideal at present, which directly affects the performance and quality of the finished white LED lamp.

[0005] 3. Although the LED itself is the core part of the finished white LED luminaire, since the performance parameters such as the spectral characteristics of a single LED have been qualitative in the packaging stage, the performance of the finished white LED basically determines the overall performance of the white LED luminaire. In addition to investing in expensive packaging equipment, it is difficult for manufacturers who purchase finished white LEDs to make white LED lamps to make major changes to the shape and structure of white LED lamps, which seriously restricts the overall design diversity of finished lamps.

[0007] 1. Since the combination of LED chips and fluorescent material layers that produce blue light or blue light + green light is still limited, that is, the two are still packaged in a closed space, and the fluorescent material layer that forms white light is still affected by the packaging process and limited. The area of ​​the finished white LED cannot be made larger due to the restriction of the heat dissipation area of ​​the base, that is, the area of ​​the fluorescent material layer is still small, so the problem of serious glare of the white LED lamp has not been solved.

[0008] 2. Since the fluorescent material layer and the LED chip are still packaged in a closed space, when blue light or blue light + green light are excited by the fluorescent material layer and then mixed to produce white light, the heat generated by the warm color spectrum dominated by red light It still needs to dissipate heat in the form of heat conduction through the LED chip and chip base, and the heat dissipation effect is still not ideal. It still has some negative effects on the performance and quality of phosphors and LED chips, and still affects the performance and quality of finished white LED lamps.

[0009] 3. Since the phosphor powder and the LED chip are still packaged in a closed space, the relative position of the phosphor powder and the chip cannot be freely designed by the designer of the white light LED lamp, and it is still difficult to determine the shape and structure of the white light LED lamp After making major changes, it still restricts the diversity of the overall external shape design of white LED finished lamps, and still cannot meet the market's demand for the diversity and artistic effect of the overall external shape of white LED finished lamps.

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