KR20240036904A - Led lighting apparatus and system with automatic color conversion - Google Patents

Abstract

LED lighting devices and systems are provided according to embodiments of the present invention. The LED lighting device includes an LED module unit including a first LED unit and a second LED unit, each having a different color temperature; An LED converter unit that converts AC power to DC power and outputs power to one of the first LED unit and the second LED unit; a first control unit that controls the intensity of the output power of the LED converter unit and the operation of the second control unit according to a detection result of the surrounding temperature; And it may include the second control unit that selectively applies the output power of the LED converter unit to the first LED unit and the second LED unit according to the control signal of the first control unit.

Description

LED lighting device and system capable of automatic color conversion {LED LIGHTING APPARATUS AND SYSTEM WITH AUTOMATIC COLOR CONVERSION}

The present invention relates to an LED lighting device and system capable of automatic color conversion.

LEDs have been widely used recently because they have many advantages over conventional light sources, such as long lifespan, low power consumption, easy control of output, and small size.

A conventional LED lighting system includes, for example, a power supply unit that supplies power, a sensor unit that detects changes in ambient illuminance according to irradiated light, an illuminance control unit that adjusts the power to be applied according to the detection signal of the sensor unit, and an illuminance control unit that adjusts the power to be applied according to the detection signal of the sensor unit. It may be configured to include an LED lighting unit whose on/off and brightness is variable according to the control of the control unit. This lighting system has the advantage of increasing power efficiency by controlling output according to changes in ambient illuminance.

However, in this conventional LED lighting system, the luminous intensity only changes according to changes in illuminance, and the color temperature of the LED lighting is maintained constant. In other words, since the light emitting device is controlled solely based on changes in illumination regardless of the temperature of the room, the room feels colder or hotter depending on the color temperature of the lighting.

For example, a color temperature similar to an incandescent light tends to make the room feel hotter than the actual room temperature, while a color temperature similar to a fluorescent light tends to make the room feel colder even though the room temperature is low.

Therefore, there is a need to introduce an LED lighting system that can automatically emit light at a color temperature appropriate for the temperature.

The purpose of the present invention is to provide an LED lighting device and system capable of automatic color conversion designed to solve the above problems.

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 description below.

An LED lighting device is provided according to an embodiment of the present invention. The LED lighting device includes an LED module unit including a first LED unit and a second LED unit, each having a different color temperature; An LED converter unit that converts AC power to DC power and outputs power to one of the first LED unit and the second LED unit; a first control unit that controls the intensity of the output power of the LED converter unit and the operation of the second control unit according to a detection result of the surrounding temperature; And it may include the second control unit that selectively applies the output power of the LED converter unit to the first LED unit and the second LED unit according to the control signal of the first control unit.

Additionally, the second control unit may include a latch relay that switches between the input terminal of the first LED unit and the input terminal of the second LED unit according to a control signal from the first control unit.

Additionally, the first LED unit may emit light at a color temperature ranging from 2700 to 3500K, and the second LED unit may emit light at a color temperature ranging from 4000 to 6000K.

Additionally, the first control unit may control the second control unit to apply the output power of the LED converter unit to the second LED unit when the ambient temperature is higher than a predetermined reference temperature.

Additionally, it may include a temperature sensor that detects the ambient temperature and transmits a detection signal to the first control unit.

An LED lighting system is provided in accordance with an embodiment of the present invention. The LED lighting system includes the LED lighting devices classified into at least one lighting group, and each of the lighting groups includes a master lighting device and at least one slave lighting that are interconnected through wireless communication. A device comprising: a first LED unit of the master lighting device and the slave lighting device, and a second LED unit of the master lighting device and the slave lighting device, according to a detection result of the ambient temperature of the master lighting device. It can be controlled to emit light.

Additionally, according to a user's input, a lighting group to which each of the plurality of LED lighting devices belongs, and the master lighting device and the slave lighting device for each of the lighting groups may be set.

In addition, the master lighting device and the slave lighting device belonging to each of the lighting groups are controlled so that the first LED unit and the second LED unit selectively emit light according to a reference temperature, and the reference temperature is controlled according to the user's input. At least two of the lighting groups may be set differently.

According to the present invention, by causing the first and second LED units with different color temperatures to selectively emit light according to the detection result of the surrounding temperature, it is possible to appropriately provide warm lighting and cold lighting depending on the temperature.

In addition, according to the present invention, a plurality of LED lighting devices can be assigned to a lighting group through a wireless communication channel, and a plurality of lighting devices can be controlled simultaneously and in a unified manner by setting the master device and the slave device.

In order to more fully understand the drawings cited in the detailed description of the present invention, a brief description of each drawing is provided.
1 shows a functional block diagram of an LED lighting device according to an embodiment of the present invention.
2 shows an LED lighting system according to an embodiment of the present invention.
Figure 3 exemplarily shows a wireless communication channel allocated to a plurality of LED lights in an LED lighting system according to an embodiment of the present invention.
4 and 5 show a user interface for controlling an LED lighting system according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described with reference to the attached drawings. When adding reference numerals to components in each drawing, it should be noted that identical components are given the same reference numerals as much as possible even if they are shown in different drawings. Additionally, when describing embodiments of the present invention, if detailed descriptions of related known configurations or functions are judged to impede understanding of the embodiments of the present invention, the detailed descriptions will be omitted. In addition, embodiments of the present invention will be described below, but the technical idea of the present invention is not limited or limited thereto and may be modified and implemented in various ways by those skilled in the art.

Throughout the specification, when a part is said to be "connected" to 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 in between. . Throughout the specification, when a part is said to “include” a certain element, this means that it may further include other elements rather than excluding other elements, unless specifically stated to the contrary. Additionally, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the component is not limited by the term.

1 shows a functional block diagram of an LED lighting device according to an embodiment of the present invention.

Referring to FIG. 1, the LED lighting device 100 may include an LED module unit 110, an LED converter unit 120, a control unit 130, a sensor unit 140, and a power supply unit 150.

The LED module unit 110 may include a first LED unit 111 and a second LED unit 112.

The first LED unit 111 and the second LED unit 112 are composed of a plurality of LED elements connected in series or parallel, and can emit light when DC power output from the LED converter unit 120 is applied. In an embodiment, the first LED unit 111 and the second LED unit 112 may be implemented to include a plurality of LED arrays. In this case, each LED array may be configured to have a plurality of LED elements connected in series and spaced apart, and the LED arrays may be connected in parallel to each other.

In an embodiment, the first LED unit 111 and the second LED unit 112 may have different color temperatures. That is, the first LED unit 111 and the second LED unit 112 may emit light in different first and second colors, respectively, when DC power output from the LED converter unit 120 is applied. For example, the first LED unit 111 emits light with a color temperature ranging from 2700 to 3500K (warm white), and the second LED unit 112 emits light with a color temperature ranging from 4000 to 6000K (cool white). It may be configured to emit light.

In an embodiment, the first LED unit 111 and the second LED unit 112 may be implemented to selectively emit light. For example, based on the ambient temperature detected by the temperature sensor, the second control unit 132 controls the direct current power output from the LED converter unit 120 to the first LED unit 111 and the second LED unit 112. By implementing one of the applied conditions, the first LED unit 111 and the second LED unit 112 can selectively emit light according to the ambient temperature.

The LED converter unit 120 may receive alternating current power from the power unit 150, convert it into direct current power, and output it to the LED module unit 110. Additionally, the LED converter unit 120 may supply direct current power as a driving power for the operation of other components (i.e., control unit 130, sensor unit 140, etc.). In an embodiment, the LED converter unit 120 may be comprised of an input filter that removes noise from an external power source, a rectifier circuit that converts alternating current power supplied from an external power source to direct current, and an SMPS module for voltage drop. At this time, the SMPS module is a component that steps down the high voltage input from the rectifier circuit to a voltage that can be used in the LED module unit 110. It uses a semiconductor element as a switch to convert the direct current input voltage into a square wave voltage. It can be implemented as a Switching Mode Power Supply (SMPS) that obtains a controlled direct current output voltage through a filter after conversion.

The control unit 130 may receive driving power from the LED converter unit 120 and control the operation of other components of the LED lighting device 100 through control signals.

In an embodiment, the control unit 130 may include a first control unit 131 and a second control unit 132.

The first control unit 131 may control the size of the output of the LED converter unit 120 based on user input and/or a detection signal from the sensor unit 140. For example, when a user transmits a user input for setting the brightness of the first LED unit 111 and/or the second LED unit 112 through a user terminal or a separate remote control device, the first control unit ( 131) can control the size of the output of the LED converter unit 120 to correspond to the corresponding brightness. In addition, for example, the first control unit 131 controls the first LED unit 111 and/or the second LED unit 112 when a motion detection signal is received from the motion detection sensor of the sensor unit 140. The size of the output of the LED converter unit 120 is controlled to emit light at a brightness of 1, and when the motion detection signal is not received for more than a certain period of time, the first LED unit 111 and/or the second LED unit 112 The size of the output of the LED converter unit 120 can be controlled to emit light at a lower second brightness. In an embodiment, the output control of the LED converter unit 120 by the first control unit 131 is performed using a pulse width modulation (PWM) method, a method of applying a control voltage in a predetermined range (0 to 10 V), etc. It can be implemented through .

Additionally, the first control unit 131 may control the second control unit 132 so that the output of the LED converter unit 120 is selectively applied to the first LED unit 111 and the second LED unit 112. For example, the first control unit 131 may receive a detection signal about the ambient temperature from the temperature sensor of the sensor unit 140. Subsequently, according to the temperature detection result, the first control unit 131 may control the second control unit 132 to apply power to the first LED unit 111 when the surrounding temperature is lower than a predetermined temperature. Meanwhile, the first control unit 131 may control the second control unit 132 to apply power to the second LED unit 112 when the surrounding temperature is higher than a predetermined temperature.

In an embodiment, the first control unit 131 may be implemented through a wireless communication module and an MCU (microcontroller). At this time, the wireless communication module includes LAN, WCDMA (Wideband Code Division Multiple Access), LTE (Long Term Evolution), WiBro (Wireless Broadband Internet), RF (Radio Frequency) communication, wireless LAN, and Wi-Fi ( It can be implemented using various wired and wireless communication technologies available in the relevant technology field, such as Wireless Fidelity, Bluetooth communication, and Zigbee. The LED lighting device 100 can configure a wireless communication network and set wireless communication functions through a wireless communication module, and can transmit and receive signals and/or data with other LED lighting devices 100.

The second control unit 132 selectively applies the output of the LED converter unit 120 to one of the first LED unit 111 and the second LED unit 112 according to the control signal of the first control unit 131. You can. For this purpose, the second control unit 132 uses a latch relay (latch relay) that switches between the input terminal of the first LED unit 111 and the input terminal of the second LED unit 112 according to the control signal of the first control unit 131. Latch relay) may be included.

The sensor unit 140 may receive a driving signal from the first control unit 131, generate a predetermined detection signal, and transmit it to the first control unit 131. For example, the sensor unit 140 may include sensors such as a motion detection sensor for detecting the user's approach or motion, an infrared sensor for providing one-to-one infrared communication, and a temperature sensor for detecting the surrounding temperature.

Based on the detection signal from the sensor unit 140, the first control unit 131 may control the operation of the LED lighting device 100.

For example, when a user's approach or movement is detected by a motion detection sensor, the first control unit 131 causes the 111 and/or the second LED unit 112 to emit light at a first brightness and adjusts the brightness according to a predetermined standard. If a motion detection signal is not received for a period of time, the light can be controlled to emit at a second brightness. At this time, the first brightness, second brightness, and reference time may be set according to user input.

In addition, for example, the first control unit 131 operates the second control unit 132 to apply power to the first LED unit 111 when the ambient temperature is lower than a predetermined reference temperature according to the temperature detection result of the temperature sensor. and, if the ambient temperature is above a predetermined reference temperature, the second control unit 132 can be controlled to apply power to the second LED unit 112. At this time, the reference temperature can be set according to user input.

The LED lighting device 100 according to FIG. 1 is an example, and various configurations may be applied depending on the embodiment to which the present invention is applied.

2 shows an LED lighting system according to an embodiment of the present invention.

An LED lighting system can be configured by connecting a plurality of LED lighting devices 100-1, 2, ..., N through wireless communication. Here, the plurality of LED lighting devices 100-1, 2, ..., N may be the LED lighting devices described above with reference to FIG. 1.

The LED lighting system may include a master lighting device and at least one slave lighting device.

For example, a plurality of LED lighting devices (100-1, 2, ..., N) are allocated to N wireless communication channels generated through the wireless communication module of the first control unit 131, and signals and/or data are transmitted between them. It can be configured to transmit and receive. At this time, the LED lighting device 100-1 assigned to the first channel may be set as the master lighting device, and the LED lighting devices 100-2, ..., N assigned to the remaining channels may be set as slave lighting devices.

In an embodiment, the operation of the slave lighting devices 100-2, ..., N may be configured to be dependent on the master lighting device 100-1.

That is, according to the ambient temperature detection result of the master lighting device 100-1, the first LED unit and the second LED unit of the master lighting device 100-1 and the slave lighting device 100-2,..., N are selectively selected. can emit light. Specifically, the temperature sensor of the master lighting device 100-1 detects the ambient temperature, and when the ambient temperature is lower than a predetermined reference temperature, the master lighting device 100-1 and the slave lighting device 100-2,... , N) emit light simultaneously, and if the surrounding temperature is above a predetermined reference temperature, the second LED parts of the master lighting device 100-1 and the slave lighting devices 100-2, ..., N) emit light simultaneously. It can be controlled to do so.

In an embodiment, allocation of the master lighting device 100-1 and slave lighting devices 100-2,..., N, and setting a reference temperature may be performed based on user input.

Figure 3 exemplarily shows a wireless communication channel allocated to a plurality of LED lights in an LED lighting system according to an embodiment of the present invention.

A plurality of LED lighting devices constituting an LED lighting system may be classified into at least one lighting group.

LED lighting devices belonging to each lighting group are sequentially assigned to wireless communication channels, so that they can be interconnected through a wireless communication network. At this time, a wireless communication network may not be configured between each lighting group.

Each lighting group may include a master lighting device and at least one slave lighting device.

At this time, the operation of the slave lighting device in each lighting group may be configured to be dependent on the master lighting device. According to the result of detecting the ambient temperature of the master lighting device, the first LED unit and the second LED unit of the master lighting device and the slave lighting device may selectively emit light. Specifically, the temperature sensor of the master lighting device detects the ambient temperature, and when the ambient temperature is lower than the predetermined reference temperature, the first LED unit of the master lighting device and the slave lighting device emits light simultaneously, and the ambient temperature is lower than the predetermined reference temperature. If this is the case, the second LED units of the master lighting device and the slave lighting device can be controlled to emit light simultaneously. In an embodiment, the reference temperature may be set differently for at least two of the lighting groups based on user input.

Additionally, in an embodiment, allocation of LED lighting devices, master lighting devices, and slave lighting devices included in each lighting group may be performed based on user input.

4 and 5 show a user interface for controlling an LED lighting system according to an embodiment of the present invention.

Referring to FIGS. 4 and 5 , a user terminal or a separate remote control device may be provided with a predetermined user interface for controlling the LED lighting system.

In embodiments, a user may search for assigned lighting groups and wireless channels for each of a plurality of LED lighting devices through a user interface. Additionally, a new lighting group can be assigned to each LED lighting device, or a wireless channel within the lighting group can be assigned. Wireless channel allocation allows users to set a master lighting device (e.g., an LED lighting device assigned to the first wireless channel) and slave lighting devices within each lighting group.

In embodiments, a user may set a reference temperature for each LED lighting device and/or group of lights through a user interface. The first LED unit and the second LED unit having different color temperatures may selectively emit light based on the set reference temperature.

In embodiments, a user may manually adjust the on/off status and brightness of each LED lighting device and/or lighting group through a user interface.

However, this user interface is an example and may be modified in various ways depending on the embodiment to which the present invention is applied.

As described above, the optimal embodiments are disclosed in the drawings and specifications. Although specific terms are used here, they are used only for the purpose of explaining the present invention and are not used to limit the meaning or scope of the present invention described in the claims. Therefore, those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the attached patent claims.

100: LED lighting device 110: LED module unit
111: 1st LED unit 112: 2nd LED unit
120: LED converter unit 130: Control unit
131: first control unit 132: second control unit
140: sensor unit 150: power unit

Claims (8)

As an LED lighting device,
An LED module unit including a first LED unit and a second LED unit each having a different color temperature;
An LED converter unit that converts AC power to DC power and outputs power to one of the first LED unit and the second LED unit;
a first control unit that controls the intensity of the output power of the LED converter unit and the operation of the second control unit according to a detection result of the surrounding temperature; and
An LED lighting device comprising the second control unit that selectively applies the output power of the LED converter unit to the first LED unit and the second LED unit according to the control signal of the first control unit. According to claim 1,
The second control unit includes a latch relay that switches between the input terminal of the first LED unit and the input terminal of the second LED unit in accordance with a control signal from the first control unit. According to claim 1,
An LED lighting device wherein the first LED unit emits light with a color temperature in the range of 2700 to 3500K, and the second LED unit emits light with a color temperature in the range of 4000 to 6000K. According to claim 3,
The first control unit controls the second control unit to apply the output power of the LED converter unit to the second LED unit when the ambient temperature is higher than a predetermined reference temperature. According to claim 1,
An LED lighting device comprising a temperature sensor that detects the ambient temperature and transmits a detection signal to the first control unit. Comprising a plurality of LED lighting devices according to any one of claims 1 to 5, classified into at least one lighting group,
Each of the lighting groups includes a master lighting device and at least one slave lighting device interconnected through wireless communication, and according to a detection result of the ambient temperature of the master lighting device, the master lighting An LED lighting system wherein the first LED units of the device and the slave lighting device, and the second LED units of the master lighting device and the slave lighting device are controlled to selectively emit light. According to claim 6,
An LED lighting system in which, according to a user's input, a lighting group to which each of the plurality of LED lighting devices belongs, and the master lighting device and the slave lighting device of each of the lighting groups are set. According to claim 6,
The master lighting device and the slave lighting device belonging to each of the lighting groups are controlled so that the first LED unit and the second LED unit selectively emit light according to a reference temperature,
The reference temperature is set differently for at least two of the lighting groups according to user input.