A kind of dimmable LED circuit module and LED surface lamps applied thereto

An LED circuit and LED light source technology, applied in the field of LED lighting, can solve the problem of uneven brightness and darkness of LED surface lamps, and achieve the effects of improving light distribution, reducing light efficiency and reducing brightness difference.

Active Publication Date: 2015-09-23
SHANGHAI YAMING LIGHTING +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a dimmable LED circuit module and a light distribution method for LED surface lamps applied thereto, which are used to solve the above-mentioned prior art LED surface lamps. average problem

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  • A kind of dimmable LED circuit module and LED surface lamps applied thereto
  • A kind of dimmable LED circuit module and LED surface lamps applied thereto
  • A kind of dimmable LED circuit module and LED surface lamps applied thereto

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Embodiment Construction

[0026] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0027] Specifically, the technical problem to be solved by the present invention is that, due to the working principle different from that of DC-driven LED surface lamps, in the LED surface lamps driven by segmented linear power supply, the current flowing in the LED particle strings varies greatly , If the particles are mounted in a regular arrangement, the light-emitting surface of the lamp will have a large difference between light ...

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Abstract

The invention provides a light-adjustable LED circuit module and an LED face type lamp with the light-adjustable LED circuit module. The light-adjustable LED circuit module comprises a rectifier bridge connected with an alternating-current power source externally, a light adjusting signal input end, a GND end, multiple LED light source modules, multiple branch linear breakover switches, and multiple load resistors. Through adjustment of the value of each load resistor, the difference of values of currents passing through the LED light source modules is reduced, and therefore the luminance difference of the LED light source modules is reduced. In addition, the light-adjustable LED circuit module is assembled on the LED face type lamp, the smaller the current flowing through each LED light source module is, the denser the distribution of LED particles in the corresponding LED light source module on the light-emitting face of a lamp body is, through combined action of the light-adjustable LED circuit module and the LED face type lamp, the light distribution effect of the alternating-current-driven LED face type lamp is remarkably improved, the luminance uniformity of the light emitting face of the lamp is basically achieved, the system cost is not increased at the same time, and the luminous efficiency of a system is not reduced.

Description

technical field [0001] The invention relates to the technical field of LED lighting, in particular to a dimmable LED circuit module and an LED surface lamp for its application. Background technique [0002] In LED surface-type lamps, such as ceiling lamps, display screens, etc., many LED particles are required to cover the light-emitting surface of the lamp, and it is hoped that the brightness on the light-emitting surface will be consistent, and there will be no obvious differences between bright and dark areas. [0003] According to the working status of the switching devices in the power supply, the power supply can be divided into two categories, namely high-frequency switching power supply and linear power supply. Similarly, LED lighting power supplies are also divided into switching power supplies and linear power supplies. [0004] Such as figure 1 As shown, in a DC LED lamp driven by a high-frequency switching power supply, LED1-LED5 respectively represent particle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
Inventor 曹箫洪李宝泉肖祥
Owner SHANGHAI YAMING LIGHTING
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