KR20220071039A - Led lighting device and operation method thereof - Google Patents

Abstract

According to an embodiment of the present invention, provided are an LED lighting device and an operating method of the LED lighting device. The LED lighting device and the operating method of the LED lighting device may comprise: a step of generating a brightness intensity control value of an LED module required for dimming control; a step of comparing the brightness intensity control value and a minimum brightness intensity value of the LED module; and a step of controlling a latch relay so that a power supply transmitted from a power supply device to the LED module is blocked based on a comparison result between the brightness intensity control value and the minimum brightness intensity value. Therefore, the present invention is capable of having an advantage of being economical.

Description

LED lighting device and its operation method {LED LIGHTING DEVICE AND OPERATION METHOD THEREOF}

The present invention relates to an LED lighting device and a method of operating the LED lighting device.

Recently, the use of LED modules in addition to conventional incandescent or fluorescent lamps as lighting for houses or buildings is increasing. Compared to conventional incandescent or fluorescent lamps, lighting using LED modules consumes less power, is small and has a long lifespan, and has the advantages of being environmentally friendly because it does not use mercury, so the demand for LED lighting devices is increasing. there is a trend

A conventional LED lighting device is configured to convert AC power into a desired DC power through a Switching Mode Power Supply (SMPS), and then control the LED module through dimming control. At this time, the SMPS maintains an operating state to supply power even in a standby mode in which the home appliance does not perform its original function, and thus continues to consume power even in the standby mode. That is, even in the LED lighting device, even if dimming control is not performed, standby power is continuously consumed, so a lot of energy is consumed, and the lifespan of the SMPS is also shortened.

Therefore, a new LED lighting device capable of solving such a problem and an operating method thereof are required.

The present invention is to solve the above problem, to provide an LED lighting device and an operating method of the LED lighting device that can eliminate the standby power of the LED SMPS by controlling a latch relay to selectively cut off the power delivered to the LED SMPS for that purpose

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to an embodiment of the present invention, a method of operating an LED lighting device is provided. The operating method includes: generating a luminance control value of the LED module required for dimming control; comparing the luminance control value with a minimum luminance value of the LED module; and controlling a latch relay to cut off power transmitted from a power supply to the LED module based on a comparison result of the luminance control value and the minimum luminance value.

Preferably, the controlling of the latch relay may be performed when the luminance control value is equal to or less than the minimum luminance value.

In addition, preferably, according to a user input, setting the target illuminance value of the LED lighting device; and detecting an actual illuminance value outside the LED lighting device, wherein the generating of the luminance control value includes generating the luminance control value based on a comparison result between the target illuminance value and the actual illuminance value. It can be done by

In addition, preferably, when the luminous intensity control value is higher than the minimum luminous intensity value, the method may further include performing the dimming control by adjusting the luminous intensity of the LED module based on the luminous intensity control value.

In addition, preferably, detecting an object outside the LED lighting device; transmitting the power to the LED module by controlling the latch relay when the external object is detected; performing the dimming control when the power is transferred to the LED module; and controlling the latch relay to cut off the power transmitted to the LED module when a predetermined time elapses after the external object is detected.

In addition, preferably, receiving a blocking (Off) signal from the outside of the LED lighting device; The method may further include controlling the latch relay according to the blocking signal to cut off the power transmitted from the power supply to the LED module.

According to an embodiment of the present invention, an LED lighting device is provided. The lighting device includes: LED SMPS for converting AC power to DC power; a latch relay that receives the AC power from a power supply and selectively transmits it to the LED SMPS; an LED module emitting light by receiving the DC power from the LED SMPS; and performing dimming control for the LED lighting device by generating a luminous intensity control value of the LED module, and transmitted from the power supply to the LED module based on a comparison result of the luminous intensity control value and the minimum luminous intensity value of the LED module It may include a control unit for controlling the latch relay so that the power to be cut off.

Preferably, when the luminous intensity control value is less than or equal to the minimum luminous intensity value, the power transmitted from the power supply device to the LED module may be cut off.

In addition, preferably, the LED lighting device further includes a sensor unit configured to set an external target illuminance value according to a user input and detect an actual illuminance value outside the LED lighting device, wherein the control unit includes the target illuminance value. The luminance control value may be generated based on a comparison result of the value and the actual illuminance value.

Also, preferably, when the luminous intensity control value is higher than the minimum luminous intensity value, the controller may perform the dimming control by adjusting the luminous intensity of the LED module based on the luminous intensity control value.

In addition, preferably, the sensor unit detects an object outside the LED lighting device, but when the external object is detected, transmits an object detection signal to the control unit, and the control unit receives the object detection signal and the dimming Control is performed, but after a certain time has elapsed, the power transmitted from the power supply device to the LED module may be cut off.

In addition, preferably, the LED lighting device further comprises a communication unit for receiving a cutoff (Off) signal from the outside and transmitting it to the control unit, wherein the control unit is transmitted from the power supply device to the LED module according to the cutoff signal The power can be cut off.

In addition, preferably, it may further include a small SMPS that receives the AC power from the power supply, converts the DC power to the control unit, the sensor unit, and the communication unit.

According to the present invention, it is possible to cut off the power transmitted to the LED SMPS through the control of the latch relay, so that the LED SMPS does not consume standby power, which is economical.

In addition, according to the present invention, when dimming control is unnecessary, since power is not transmitted to the LED SMPS, there is an advantage in that the lifespan of the LED SMPS is increased.

In addition, according to the present invention, by separately providing a small SMPS for transmitting power to the control unit, the sensor unit, and the communication unit, there is an advantage that the loss of power supplied to the LED module does not occur.

In addition, according to the present invention, by enabling the change of the latch relay according to the power capacity of the LED SMPS, there is an advantage that it can be applied to products having various power capacities.

In order to more fully understand the drawings cited in the Detailed Description, a brief description of each drawing is provided.
1 is a block diagram of an LED lighting device according to an embodiment of the present invention.
2 is a view for explaining a method of operating a latch relay according to an embodiment of the present invention.
3 is a view for explaining a method of operating an LED lighting device according to an embodiment of the present invention.
4 is a view for explaining a method of operating an LED lighting device according to an embodiment of the present invention.
5 is a view for explaining a method of operating an LED lighting device according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described with reference to the accompanying drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted. In addition, the embodiments of the present invention will be described below, but the technical spirit of the present invention is not limited thereto and may be variously implemented by those skilled in the art. On the other hand, for convenience described below, the up, down, left and right directions are based on the drawings, and the scope of the present invention is not necessarily limited to the direction.

Throughout the specification, when a part is "connected" with another part, this includes not only the case where it is "directly connected" but also the case where it is "indirectly connected" with another element interposed therebetween. . Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated. In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms.

1 is a block diagram of an LED lighting device according to an embodiment of the present invention, and FIG. 2 is a diagram for explaining an operation method of a latch relay according to an embodiment of the present invention. In more detail, (a) of FIG. 2 shows an Off state of the latch relay, and FIG. 2 (b) shows an On state of the latch relay.

1 and 2 , the LED lighting device 1000 includes a power supply device 100 , an LED SMPS 200 , an LED module 300 , a latch relay 400 , a small SMPS 500 , and a control unit 600 . , a sensor unit 700 and a communication unit 800 may be included.

The power supply device 100 is connected in parallel to the latch relay 400 and the small SMPS 500 through a path connected to the LED SMPS 200 through the latch relay 400 and a path connected to the small SMPS 500 . AC power may be delivered to the LED SMPS 200 and the small SMPS 500 .

The LED SMPS 200 is a device for transmitting DC power to the LED module 300 and may be configured as a Switching Mode Power Supply (SMPS). The LED SMPS 200 may convert AC power received from the power supply device 100 into DC power, and transmit the converted DC power to the LED module 300 . In one embodiment, the LED SMPS 200 includes a DC/DC converter for dropping the converted DC power to a voltage suitable for use in the LED module 300, a control circuit for stabilizing the output voltage, an overvoltage and overcurrent protection circuit, and the like. may include more.

The LED module 300 is a device capable of emitting light by receiving DC power from the LED SMPS 200 , and may be composed of at least one or more. In one embodiment, in the LED module 300 , the driving current is controlled according to the control of the controller 600 , and as a result, the luminous intensity of the LED module 300 may be controlled.

The latch relay 400 may be connected to the power supply 100 and the LED SMPS 200 to receive AC power from the power supply 100 and selectively transmit it to the LED SMPS 200 . In more detail, the latch relay 400 may include a plurality of contacts and at least one coil, and the coil is energized or deenergized according to the control of the controller 600 to differentiate the plurality of contacts. It is possible to transmit and/or cut off AC power to the LED SMPS 200 by opening and closing. For example, when the latch relay 400 is in the NC (Normal Close) state (Off state), the power transmitted to the LED SMPS 200 is cut off, and the latch relay 400 is in the NO (Nomal Open) state (On). state), power is transmitted to the LED SMPS (200). Through this, it is possible to completely cut off the standby power of the LED SMPS 200 , thereby increasing the lifespan of the LED SMPS 200 and increasing energy efficiency.

In one embodiment, the latch relay 400 can be changed according to the power capacity of the LED SMPS 200, and thus can be applied to various products. Here, the latch relay 400 may be a double-coil latching relay (2-coil laching relay), but is not limited thereto, and various types of relays may be applied according to an embodiment of the present invention.

The small SMPS 500 may receive AC power from the power supply device 100 , convert it into DC power, and transmit it to the control unit 600 , the sensor unit 700 , and the communication unit 800 . The small SMPS 500 transmits power to the control unit 600 , the sensor unit 700 and the communication unit 800 separately from the power delivered to the LED module 300 , so that when power is delivered using one SMPS possible power loss can be avoided. In addition, even if the power delivered to the LED module 300 is cut off, it is possible to maintain the power delivered to the control unit 600 , the sensor unit 700 and the communication unit 800 by the small SMPS 500 , so that the dimming is more efficient control and power management.

The control unit 600 may receive a control-related signal from the sensor unit 700 , the communication unit 800 , and the like to control the latch relay 400 and perform dimming control of the LED module 300 .

In an embodiment, the controller 600 may generate a luminance control value of the LED module 300 to perform dimming control for the LED lighting device 1000 . Here, the luminous intensity control value is a value for controlling the luminous intensity of the LED module 300 to increase the external illuminance of the LED lighting device 1000 to a certain value, and includes an external actual illuminance value sensed through the sensor unit 700 and It may be generated by comparing a target illuminance value to be reached through dimming control. Here, the target illuminance value is an external illuminance to be reached through dimming control, and may be set according to a user input or a preset value.

For example, when the actual illuminance value is lower than the target illuminance value, the luminance control value may be generated to control the luminance of the LED module 300 so that the actual illuminance value is equal to or greater than the target illuminance value. In this case, the luminance control value may be generated so that the LED module 300 emits light with a luminance of 0 to 100%.

In one embodiment, when the brightness control value is higher than a predetermined minimum brightness value, the control unit 600 may be implemented to perform dimming control by adjusting the brightness of the LED module 300 based on the brightness control value. Here, the minimum luminance value may refer to a reference value for determining whether to supply or block AC power to the LED SMPS 200 through the control of the latch relay 400 , as will be described in detail below. This minimum luminance value may be set according to a user's input or may be a value set as a default.

For example, when the minimum luminous intensity value is set to 10% and the generated luminous intensity control value is 80%, the control unit 600 may perform dimming control by allowing the LED module 300 to emit light at 80% of the luminous intensity. .

In an embodiment, the controller 600 may control the latch relay 400 based on a comparison result of the luminance control value and the minimum luminance value. Specifically, the controller 600 may cut off the power transmitted from the power supply device 100 to the LED module 300 when the luminance control value is less than or equal to the minimum luminance value. For example, when the generated luminous intensity control value is less than or equal to the minimum luminous intensity value, the LED module 300 may stop emitting light by cutting off power transmitted to the LED SMPS 200 through the latch relay 400 .

According to an embodiment, in order to set a target illuminance value and/or a minimum luminance value, the LED lighting apparatus 1000 may further include an input unit (not shown).

In an embodiment, the control unit 600 may be configured to start dimming control based on an object detection signal received from the sensor unit 700 . Specifically, upon receiving the object detection signal, the control unit 600 may transmit power to the LED SMPS 200 through the latch relay 400 to cause the LED module 300 to emit light and perform dimming control. At this time, when a predetermined time elapses after receiving the object detection signal, the LED module 300 may not emit light by cutting off the power transmitted to the LED SMPS 200 through the latch relay 400 .

In one embodiment, the control unit 600 may receive a cutoff (Off) signal from the communication unit 800 to cut off the power transmitted from the power supply device 100 to the LED module 300 . Specifically, when the control unit 600 receives the blocking signal from the communication unit 800, the LED module 300 can stop light emission by cutting off the power transmitted to the LED SMPS 200 through the latch relay 400. .

The sensor unit 700 may detect an external state of the LED lighting device 1000 and transmit a related signal to the control unit 600 .

As an embodiment, the sensor unit 700 may detect an actual illuminance value outside the LED lighting device 1000 , and transmit it to the control unit 600 . For example, the sensor unit 700 may include an illuminance sensor capable of detecting external illuminance.

In one embodiment, the sensor unit 700 may detect an object outside the LED lighting device, and when the object is detected, may transmit an object detection signal to the control unit 600 . For example, the sensor unit 700 may include a motion detection sensor capable of detecting an external object, an infrared sensor, and the like.

The communication unit 800 may receive a blocking (Off) signal from the outside of the LED lighting device 1000 through wired/wireless communication and transmit it to the control unit 600 , through which the power transmitted to the LED module 300 is cut off. can do. However, the present invention is not limited thereto, and power may be transmitted to the LED module 300 by receiving an On signal and transmitting it to the control unit 600 according to an embodiment.

3 is a view for explaining a method of operating an LED lighting device according to an embodiment of the present invention.

In step S310 , the LED lighting device 1000 may set an external target illuminance value.

The target illuminance value is an external illuminance to be reached through dimming control, and may be set according to a user's input through an input unit (not shown) or preset according to an embodiment.

In step S320 , the LED lighting device 1000 may detect an external actual illuminance value through the sensor unit 700 .

The actual illuminance value is the illuminance of the space in which the LED lighting device 1000 is installed, and may be a value formed by natural light or light currently irradiated from the lighting device 1000 .

In step S330 , the LED lighting apparatus 1000 may generate a luminance control value of the LED module 300 required for dimming control by comparing the actual illuminance value with the target illuminance value.

For example, when the actual illuminance value is lower than the target illuminance value, the luminance control value may be generated to increase the luminance of the LED module 300 .

Subsequently, in step S340 , the LED lighting apparatus 1000 may determine whether to perform dimming control by comparing the generated luminance control value with the minimum luminance value of the LED module 300 .

For example, if the luminance control value is higher than the minimum luminance value in step S340, the process may proceed to step S350, and if the luminance control value is less than or equal to the minimum luminance value, the process may proceed to step S360.

In step S350 , the LED lighting apparatus 1000 may perform dimming control by adjusting the brightness of the LED module 300 based on the brightness control value. That is, when the luminance control value is higher than the minimum luminance value, the LED module 300 may emit light according to the luminance control value to adjust the actual external illuminance to reach the target illuminance.

For example, when the minimum luminous intensity value is set to 10% and the generated luminous intensity control value is 80%, dimming control may be performed by allowing the LED module 300 to emit light at an luminous intensity of 80%. At this time, the dimming control may be performed by transmitting power to the LED SMPS 200 through the latch relay 400 and then being controlled by the controller 600 , in a state in which the LED module 300 does not emit light. It may include a process of converting to a light-emitting state.

In step S360 , the LED lighting device 1000 may stop the light emission of the LED module 300 by cutting off the power transmitted to the LED SMPS 200 through the latch relay 400 . That is, when the luminance control value is less than or equal to the minimum luminance value, the dimming control may be stopped.

4 is a view for explaining a method of operating an LED lighting device according to an embodiment of the present invention. More specifically, FIG. 4 shows an operation method when an object outside the LED lighting device is detected according to an embodiment of the present invention.

In step S410 , the LED lighting device 1000 may detect an external object.

In step S420 , the LED lighting device 1000 may determine whether an external object is detected. At this time, if an external object is detected, the process may proceed to step S430, and if no external object is detected, the process may proceed to step S450.

In step S430 , the LED lighting device 1000 may cause the LED module 300 to emit light by transmitting power to the LED SMPS 200 through the latch relay 400 , and then S310 described above with reference to FIG. 3 . Step S310 to S350 may be performed.

In step S440 , the LED lighting device 1000 may calculate the lapse of time after the external object is detected. In this case, the elapsed time after the external object is sensed may be newly set according to a user input or may be a preset value. If a predetermined time has not elapsed since the detection of an external object, the process may proceed to step S430 again to continue dimming control of the LED lighting device 1000, and if a predetermined time has elapsed, it may proceed to step S450.

Subsequently, in step S450 , the LED lighting device 1000 may stop the light emission of the LED module 300 by cutting off the power transmitted to the LED SMPS 200 through the latch relay 400 . Subsequently, although not shown in the drawing, the LED lighting device 1000 may proceed to step S410 to further perform the above-described steps S410 to S440.

5 is a view for explaining a method of operating an LED lighting device according to an embodiment of the present invention. More specifically, FIG. 4 shows an operation method when a blocking signal is received from the outside of the LED lighting device according to an embodiment of the present invention.

First, in step S510 , the LED lighting device 1000 may perform dimming control. Step S510 may be performed as a procedure continuing from step S310 to step S350 described above with reference to FIG. 3 .

In step S520 , the LED lighting device 1000 may determine whether a blocking signal is received. When the blocking signal is received from the outside, the process proceeds to step S530, and when the blocking signal is not received from the outside, the process proceeds to step S510 again to perform dimming control.

In step S530 , the LED lighting device 1000 may cut off the power transmitted to the LED SMPS 200 through the latch relay 400 based on the received blocking signal. For example, the LED lighting device 1000 receives a blocking signal from the outside through the communication unit 800 , controls the latch relay 400 through the control unit 600 , and receives power delivered to the LED SMPS 200 . By blocking, it is possible to stop the light emission of the LED module 300 .

As described above, an optimal embodiment has been disclosed in the drawings and the specification. Although specific terms are used herein, they are used only for the purpose of describing the present invention, and are not used to limit the meaning or scope of the present invention described in the claims. Therefore, it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

100: power supply 200: LED SMPS
300: LED module 400: latch relay
500: small SMPS 600: control unit
700: sensor unit 800: communication unit
1000: LED lighting device

Claims (13)

In the operating method of the LED lighting device,
generating a luminance control value of the LED module required for dimming control;
comparing the luminance control value with a minimum luminance value of the LED module; and
and controlling a latch relay so that power transmitted from a power supply device to the LED module is cut off based on a comparison result of the luminance control value and the minimum luminance value. The method of claim 1,
The controlling of the latch relay is performed when the luminance control value is equal to or less than the minimum luminance value. The method of claim 1,
setting a target illuminance value of the LED lighting device according to a user input; and
Further comprising the step of detecting an actual illuminance value outside the LED lighting device,
The generating of the luminance control value is performed by generating the luminance control value based on a comparison result of the target illuminance value and the actual illuminance value. 4. The method of claim 3,
When the luminance control value is higher than the minimum luminance value, the method further comprising the step of performing the dimming control by adjusting the luminance of the LED module based on the luminance control value. The method of claim 1,
detecting an object outside the LED lighting device;
transmitting the power to the LED module by controlling the latch relay when the external object is detected;
performing the dimming control when the power is transferred to the LED module; and
The method further comprising the step of controlling the latch relay to cut off the power delivered to the LED module when a predetermined time elapses after the external object is detected. The method of claim 1,
Receiving a blocking (Off) signal from the outside of the LED lighting device;
Controlling the latch relay according to the blocking signal further comprising the step of cutting off the power transmitted from the power supply to the LED module. In the LED lighting device,
LED SMPS for converting AC power to DC power;
a latch relay that receives the AC power from a power supply and selectively transmits it to the LED SMPS;
an LED module emitting light by receiving the DC power from the LED SMPS; and
It performs dimming control for the LED lighting device by generating a luminous intensity control value of the LED module, and is transmitted from the power supply to the LED module based on a comparison result of the luminous intensity control value and the minimum luminous intensity value of the LED module and a control unit controlling the latch relay so that power is cut off. 8. The method of claim 7,
When the luminous intensity control value is less than or equal to the minimum luminous intensity value, the power transmitted from the power supply device to the LED module is cut off. 8. The method of claim 7,
The LED lighting device further includes a sensor unit configured to set an external target illuminance value according to a user input, and detect an actual illuminance value outside the LED lighting device,
The control unit generates the luminance control value based on a comparison result of the target illuminance value and the actual illuminance value. 10. The method of claim 9,
The control unit, when the luminance control value is higher than the minimum luminance value, the dimming control by adjusting the luminous intensity of the LED module based on the luminous intensity control value, the lighting device. 8. The method of claim 7,
The sensor unit detects an object outside the LED lighting device, and when the external object is detected, transmits an object detection signal to the control unit,
The control unit performs the dimming control by receiving the object detection signal, but after a predetermined time has elapsed, cut off the power transmitted from the power supply to the LED module, a lighting device. 8. The method of claim 7,
Further comprising a communication unit for receiving a blocking (Off) signal from the outside of the LED lighting device and transmitting it to the control unit,
The control unit cuts off the power transmitted from the power supply to the LED module according to the blocking signal, the lighting device. 13. The method of claim 12
The lighting device further comprising a small SMPS that receives the AC power from the power supply, converts it into the DC power, and transmits it to the control unit, the sensor unit, and the communication unit.

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