Full-color COB device

Abstract

The invention discloses a full-color COB device which comprises a substrate, the upper surface of the substrate is provided with a light emitting area, the light emitting area comprises a white lightemitting area and an atmosphere lighting area, the atmosphere lighting area is of a closed annular structure, and the atmosphere lighting area surrounds the white light emitting area. The white lightemitting area is provided with a plurality of warm light emitting modules and cold light emitting modules, and the warm light emitting modules and the cold light emitting modules are arranged in a staggered mode. The atmosphere lighting area is provided with a plurality of red light emitting modules, green light emitting modules and blue light emitting modules, and the red light emitting modules,the green light emitting modules and the blue light emitting modules are arranged in a staggered mode. According to the full-color COB device provided by the technical scheme, the COB device is smallin light emitting area, wide in color adjusting range and good in light mixing effect, and the defects in the prior art can be overcome.

Description

technical field [0001] The invention relates to the technical field of COB light sources, in particular to a full-color COB device. Background technique [0002] Most of the RGB dimmable LED light sources on the market are generally bulb lamps and panel lights. This light source can only be used for floodlighting, and most commercial lighting requires the light source to have a small light-emitting surface, while COB devices are used in commercial lighting. The inherent advantages of power density can obtain a smaller light-emitting surface under the same power, which is beneficial to the secondary optical design. At present, although there are COB devices with RGB dimming on the market, there are also COB devices with cool and warm dimming, but the white light mixing effect of the existing RGB dimming COB devices is relatively poor, and the adjustable color of the existing cold and warm dimming COB devices The field range is narrow, and the above two dimming COB devices ca...

AI Technical Summary

Problems solved by technology

At present, although there are also RGB dimming COB devices on the market, there are also cold and warm dimmable COB devices, but the white light mixing effect of the existing RGB dimming COB devices is relatively poor, and the existing cold and warm dimming COB devices have adjustable color The range of dimming COB devices is narrow, and the above two dimming COB devices cannot meet the needs of the high-end commercial lighting market

[0003] In the prior art, there are also COB light sources integrated with RGB dimming chips and cold and warm light dimming chips. However, in the existing COB light sources, the RGB light emitting area is generally located in the middle of the total light emitting area, and the cool and warm light light emitting area is generally located in the total light emitting area. When the RGB light-emitting area occupies a small area, the white light spot has little effect, but the power of RGB is too small to give full play to its dimming function; when the RGB light-emitting area occupies a large area, when only white light is bright, The light-emitting surface in the middle of the COB light source is a dark area. After secondary optical treatment, it has a greater impact on the white light spot

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