Light emitting module with automatically regulated light emitting power and its power regulating method

Abstract

The present invention is one kind of light emitting module with automatically regulated light emitting power and its power regulating method. The light emitting module includes one LED module and one power source controlling board connected electrically to the LED module. The power source controlling board has and one thermal sensing unit for measuring environment temperature and one power source adaptor unit to convert the first power source into the second power source based on the measured temperature value. The light emitting power is regulated automatically, that is, the light emitting power is lowered to lower the temperature in condition of higher environment temperature and raised to raise brightness in condition of lower environment temperature.

Description

technical field [0001] The invention relates to a light emitting module, in particular to a light emitting module which automatically adjusts the light emitting power and a method for automatically adjusting the light emitting power. Background technique [0002] Light-emitting diodes have been paid more and more attention in recent years, especially for high-brightness light-emitting diodes (HB LEDs), the demand has been greatly increased, and a frenzy has been set off in the industry. Compared with traditional incandescent light bulbs, high-brightness light-emitting diodes have the advantages of power saving, long service life, high durability and fast response. At present, the popular applications of high-brightness light-emitting diodes are not only in general lighting, commodity lighting, automotive lighting, outdoor billboards and traffic information display, but also due to the progress and development of consumer electronics products, it has become more popular in va...

AI Technical Summary

Problems solved by technology

However, LEDs have their temperature-limited ratings in the operating mode. If they are used at high temperatures for a long time with insufficient heat dissipation, the aging of the LEDs will be accelerated, the luminous efficacy will be reduced, and the lifespan will be greatly shortened. Therefore, how to use Affecting the high temperature derivation of light-emitting diodes is a problem worth exploring

[0004] In the known technology, in order to achieve the effect of heat dissipation, most of the light-emitting modules that use light-emitting diodes as light sources are designed to increase the heat dissipation medium (such as heat dissipation fins of various materials, etc.) by predicting the total heat dissipation needs in advance. The design often increases the size of the entire light-emitting diode, which cannot achieve the best luminous efficiency under the requirements of small size and good heat dissipation

In addition, the heat dissipation through the heat dissipation medium is in a relatively passive state, and the heat can only be exported according to the heat dissipation degree of the heat dissipation medium itself, but cannot be actively judged to adjust the temperature, so the LED still has the risk of overheating

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