High color rendering LED (Light-Emitting Diode) illuminating device

Abstract

The invention discloses a high color rendering LED (Light-Emitting Diode) illuminating device which comprises a lamp body (2), LED lamp beads (8) and a power supply. The LED lamp beads (8) are connected with the power supply by circuits. The high color rendering LED illuminating device is characterized by also comprising a driving system and a light color regulating part (5), wherein under the support of the driving system, the light color regulating part (5) can rotate around a shaft; the grouped distribution structure of the LED lamp beads (8) are suitable for the structure of the light color regulating part (5); the light color regulating part (5) is positioned at the front ends of the LED lamp beads (8); and a rotation motion time sequence of the light color regulating part (5) is adaptive to a switch-on and switch-off time sequence of each group of LED lamp beads (8). Light emitted by the LED illuminating lamp has rich colors; the LED illuminating lamp has a good color rendering property, is uniform to emit the light and also can be suitable for the AC (Alternate Current) working environment.

Description

[0001] technical field [0002] The invention relates to the field of lighting fixtures, in particular to a high color rendering LED lighting device. [0003] Background technique [0004] Compared with incandescent lamps and energy-saving lamps, LED (light-emitting diode) has the advantages of energy saving, durability, and no pollution. It is regarded as the most promising next-generation lighting method and has attracted widespread attention. The basic light-emitting principle of light-emitting diodes is: in the process of carrier recombination in semiconductors, the excess energy released causes photon emission, and light waves of various colors such as red and blue are emitted. It belongs to the cold light source from electric energy directly to light energy. With outstanding advances, the unique principles and characteristics of LED not only bring the advantages of LED as a light source, but also put forward a series of new requirements for LED lighting applications, ...

AI Technical Summary

Problems solved by technology

Due to the unidirectional conduction of light-emitting diodes, in order to maintain stable light emission in lighting applications, the current practice is to use direct current for driving. A rectifier transformer is attached to the lamp for AC / DC conversion, which will bring additional power loss and reduce the overall life of the product. Therefore, Chinese patent document CN101208813B discloses a "light-emitting device for AC power operation 》, the device comprises a light-emitting diode chip, the light-emitting diode chip has an array of series-connected light-emitting units, and switching blocks respectively connected to the nodes between these light-emitting units, wherein when the array is connected to an AC voltage power supply and is powered by the AC When driven by a voltage power supply, these light-emitting units are turned on and off sequentially by means of these switching blocks. This light-emitting device can turn on these arrays sequentially under AC power, and then turn off these arrays in the reverse order, thereby reducing the flicker effect and The luminous time can be increased, but this scheme has a complex structure and high requirements on the manufacturing process

At the same time, because the spectrum of ordinary LED lamp beads is a linear spectrum and the light color is single, when used as general lighting, the color rendering is often not as good as that of incandescent lamps and other light sources.

Images