LED electric light source device based on optimal luminous efficacy and service life and design method of LED electric light source device

Abstract

The invention discloses an LED electric light source device based on optimal luminous efficacy and service life and a design method of the LED electric light source device. The LED electric light source device is characterized by comprising a rectifying module, a PFC correcting module, a constant-current driving module and an LED lamp bead module. The heat generated when an LED works can be reduced by reducing the working current of LED lamp beads, the junction temperature during work of the LED lamp beads can be reduced, the light failure phenomenon of the LED lamp beads is reduced, the luminous efficacy of the LED lamp beads is improved, and the aims of prolonging the service life of the LED lamp beads and increasing the electric energy utilization rate are finally achieved.

Description

technical field [0001] The invention relates to an LED electric light source device based on optimal light efficiency and service life and a design method thereof, belonging to the field of semiconductor lighting. Background technique [0002] As a high-tech industry in the 21st century, LED lighting is showing a rapid development trend and is widely used in various industries with good economic benefits. Up to now, LED has been applied in many industries in our country and has played a vital positive effect. The application of LED mainly focuses on the following aspects: [0003] (1) Display screen [0004] Driven by the rapid development of digital information, LED has entered the display industry with its outstanding advantages, enabling the display to be optimized and upgraded. Second, due to the narrow bandwidth of the LED, the light emitted by the LED is pure in color and has no variegated light, covering all the bands of the entire visible light, and can be combine...

AI Technical Summary

Problems solved by technology

[0016] (1) Compared with the theoretical luminous efficacy of LED lamps, the luminous efficacy of LED lighting products on the market is generally low;

[0017] (2) LED lighting products will produce light decay as the working temperature rises, shortening the life of LED lighting products. When the LED light decays to 70%, it can be considered that the LED lighting product cannot work normally;

[0018] (3) At present, the maximum power of a single LED lamp bead is only about 5W, and the luminous flux is limited. In order to achieve the lighting effect, multiple series or parallel connections are required.

Once any one of the LED lamp beads in series is damaged due to various reasons and cannot work, the LED lamp will not work normally;

[0019] (4) Since LED lighting products work by converting alternating current into direct current, the power factor of LED lighting products on the market is generally not high, resulting in low power utilization

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