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KR-102962458-B1 - LED Bar-Type Lighting Apparatus for RGBCW Control Using 3-Pin Based Single Communication Line

KR102962458B1KR 102962458 B1KR102962458 B1KR 102962458B1KR-102962458-B1

Abstract

The present invention relates to an LED lighting device, and more specifically, to an LED lighting device that can control various colors while having the same number of connection pins as a conventional T5 type LED lighting device by controlling a plurality of color channels (RGBCW) through a single communication connection pin, and can be safely used even in areas with high humidity, such as bathrooms, by receiving DC power as the driving power.

Inventors

  • 김한준

Assignees

  • 주식회사 엘엔피

Dates

Publication Date
20260508
Application Date
20250509

Claims (7)

  1. Lighting housing; An LED lighting module provided inside the above lighting housing and capable of implementing multiple colors; An interface disposed in the lighting housing and having two power connection pins to which DC power of different polarities is input, and one communication connection pin to which a communication signal for implementing the LED lighting module of multiple colors is input; A control unit that controls the power input to the LED lighting module based on a communication signal input through the communication connection pin; and It includes a correction unit that corrects the communication signal when correction of the communication signal is required, and The above control unit determines the need for correction of the communication signal based on the waveform of the communication signal input through the communication connection pin, and The above communication signal includes a plurality of color control channels for independently controlling multiple color LED lighting modules in a single control frame, and The above control unit determines whether a communication signal is input through the communication connection pin, and if a communication signal is not input through the communication connection pin, the LED lighting device controls the LED lighting module to a preset default color.
  2. In Article 1, An LED lighting device characterized by the above-described LED lighting module independently implementing R (Red), G (Green), B (Blue), C (Cool White), and W (Warm White) colors, respectively.
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  5. In claim 1 or 2, the LED lighting device An LED lighting device further comprising a reverse polarity protection unit between the power connection pin and the LED lighting module, which blocks the power supplied to the power connection pin when power of opposite polarity is supplied to the power connection pin, thereby protecting the LED lighting module and the control unit.
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  7. In claim 1, the LED lighting device An LED lighting device further comprising a switch unit for changing the above default color.

Description

LED Bar-Type Lighting Apparatus for RGBCW Control Using 3-Pin Based Single Communication Line The present invention relates to an LED lighting device, and more specifically, to an LED lighting device that can control various colors while having the same number of connection pins as a conventional T5 type LED lighting device by controlling a plurality of color channels (RGBCW) through a single communication connection pin, and can be safely used even in areas with high humidity, such as bathrooms, by receiving DC power as the driving power. Lighting devices are essential for illuminating indoor and outdoor spaces; having evolved from incandescent bulbs, fluorescent lamps, and high-intensity discharge lamps, LED (Light Emitting Diode) lighting, which offers high energy efficiency and a long lifespan, has recently become widely adopted. In particular, LEDs are used in various fields, including residential, commercial, and industrial lighting, due to advantages such as low power consumption and instant lighting characteristics. These LED lights can be classified in various ways depending on their shape and function; bar-type LED lighting devices are lighting fixtures with a linear structure that are widely used as replacements for fluorescent lamps. In particular, T5-type LED lighting devices that maintain the shape of existing T5 fluorescent lamps (5/8 inch diameter) while having LED modules installed inside are widely used as replacements for existing T5 fluorescent lamps for kitchen lighting, office lighting, and parking lot lighting. Conventional T5-type LED lighting devices incorporate warm white, cool white, daylight, or single-color LED lighting modules, and thus can only produce one color among warm white, cool white, daylight, or Red/Green/Blue. To this end, conventional T5-type LED lighting devices are equipped with three connection pins: two pins (+, -) for power supply and one connection pin for ground (GND). While simple on/off control is possible through these three connection pins, precise control, such as expressing diverse colors or adjusting brightness for multiple colors, is impossible. Meanwhile, with the advancement of smart lighting technology, there is a growing demand for color rendering and brightness control functions tailored to user environments. To meet this need, T5-type LED lighting devices must transition to a structure capable of multi-channel control. In other words, multiple connection pins are required for channels to control various colors or brightness levels (Red/Green/Blue/Cool White/Warm White). However, there is a problem in that it is difficult to secure additional connection pins to control multiple channels in a T5 type LED lighting device with a limited interface area. Therefore, there is a need for an LED lighting device that can independently control multiple color channels (RGBCW) while maintaining the same number of connection pins, such as two or three, as in existing T5 type LED lighting devices. FIG. 1 is a drawing for explaining an LED lighting system according to the present invention. FIG. 2 is a functional block diagram for explaining a T5 type LED lighting device according to one embodiment of the present invention. FIG. 3 illustrates an example of a communication signal according to the present invention. FIG. 4 illustrates an example of a control signal applied to each of the multiple color channels (RGBCW) according to a communication signal. FIG. 5 illustrates the external appearance of a T5 type LED lighting device according to the present invention. Figure 6 illustrates an internal circuit diagram of a T5 type LED lighting device according to the present invention. It should be noted that the technical terms used in this invention are used merely to describe specific embodiments and are not intended to limit the invention. Furthermore, unless specifically defined otherwise in this invention, the technical terms used in this invention should be interpreted in the sense generally understood by those skilled in the art to which this invention pertains, and should not be interpreted in an overly broad or overly narrow sense. Additionally, if a technical term used in this invention is an incorrect technical term that fails to accurately express the concept of the invention, it should be understood as being replaced by a technical term that can be correctly understood by those skilled in the art. Furthermore, singular expressions used in the present invention include plural expressions unless the context clearly indicates otherwise. In the present invention, terms such as "composed of" or "comprising" should not be interpreted as necessarily including all of the various components or steps described in the invention, and should be interpreted as meaning that some of the components or steps may not be included, or that additional components or steps may be included. In addition, it should be noted that the attached drawings are intended only to facilitate