KR102298323B1 - A light source control unit capable of selectively driving different types of light sources and a lighting device having the same - Google Patents

Abstract

The present invention relates to a lighting device capable of maintaining the high efficiency while reducing blue light. The lighting device includes: at least two different types of light sources; and a light source control unit that selectively turns on one type of light source among different types of light sources according to power from the outside and turns off the other types of light sources.

Description

A light source control unit capable of selectively driving different types of light sources and a lighting device having the same}

The present invention relates to a lighting device, and to a light source controller capable of selectively driving different types of light sources, and a lighting device having the same.

A light emitting device, for example, a light emitting diode (LED), has advantages such as low power consumption, semi-permanent lifespan, fast response speed, safety, and environmental friendliness compared to conventional light sources such as fluorescent lamps and incandescent lamps. Such light emitting diodes are being applied to various lighting devices such as various display devices, indoor lights or outdoor lights.

Korean Patent Publication No. 10-2020-0040340 (published on April 20, 2020)

An object of the present invention is to provide a light source controller capable of selectively driving different types of light sources and a lighting device having the same.

A lighting device according to the present invention for achieving the above object, at least two different types of light sources; and a light source control unit 1000 that selectively turns on one type of light source among the different types of light sources and turns off the other types of light sources according to an external power source.

The at least two different types of light sources include: a first light source 10a; and

and a second light source 20a having lower light efficiency than the first light source 10a and having a lower light intensity than the first light source in a blue light wavelength region.

According to the external power source, the light source control unit selectively turns on any one of the first light source and the second light source, and turns off the other one.

The light source control unit 1000 selects any one of the first lighting terminal and the second lighting terminal according to a switching operation from the external switch 2000, and receives an external power supply through the selected lighting terminal first channel relay (1110); and selecting one of the first light source and the second light source according to a switching operation from the external switch 2000, and providing a light source driving power LED_GND based on the external power source AC_L as the selected light source A second channel relay 1120 is included.

The light source control unit 1000 further includes a relay control unit 1130 for controlling the operations of the first channel relay 1110 and the second channel relay 1120 according to a switching operation from the external switch 2000 . do.

When the first channel relay 1110 selects the second lighting terminal according to a switching operation from the external switch 2000, the external power is supplied to the second lighting terminal and the relay controller 1130 together. .

The light source controller 1000 further includes a converter 1500 that receives external power through the first channel relay 1110 and generates the light source driving power.

The light source controller 1000 includes a gate electrode connected to a first light source connection terminal among first and second light source connection terminals switched by the second channel relay, and a converter 1500 for outputting the light source driving power LED_GND. ) a first switching element (TR1) including a source electrode connected to the output terminal and a drain electrode connected to the first light source; and a second switching element including a gate electrode connected to the second light source connection terminal, a source electrode connected to an output terminal of the converter 1500 outputting the light source driving power LED_GND, and a drain electrode connected to the second light source ( TR2) further comprises at least one of.

a first isolator (IST1) connected between the first light source connection terminal and the gate electrode of the first switching element (TR1); and at least one of a second isolator IST2 connected between the second light source connection terminal and a gate electrode of the second switching element TR2.

a cover unit 200 in which the at least two different types of light sources are accommodated; and at least two auxiliary light sources 10c and 10d electrically connected to each of the at least two different types of light sources and disposed at the edge of the cover part.

The light source and the auxiliary light source electrically connected to each other provide light of different colors.

The auxiliary light sources provide light of different colors.

The auxiliary light sources provide light of a color having a complementary color relationship.

The cover part has at least two through-holes disposed at the edges of the cover part to correspond to the at least two mutually auxiliary light sources.

The at least two through-holes have different shapes.

It further includes a light guide plate for guiding the light from the first light source and the light from the second light source in a specific direction.

the first light source is disposed on at least one of a first side surface and a second side surface facing each other of the light guide plate; The second light source is disposed on at least one of a third side and a fourth side facing each other of the light guide plate.

the first light source is disposed on one of the first and second side surfaces of the light guide plate facing each other; The second light source is disposed on the other one of the first side and the second side.

The first light source and the second light source further include a cover portion accommodated, the first light source and the second light source is disposed on the base portion of the cover portion.

The first light source is disposed to face a side surface of the light guide plate, and the second light source is disposed to face an upper surface of the light guide plate.

The light guide plate includes a light guide pattern disposed on an upper surface of the light guide plate.

The second light source is provided in plurality, and the distance between the plurality of second light sources increases as the distance between the plurality of second light sources increases from the first light source decreases.

The first light source and the second light source are alternately disposed along one side surface of the light guide plate.

The first light source is disposed farther from one side of the light guide plate than the second light source.

It further includes a light source circuit board on which the first light source and the second light source are mounted.

The light source circuit board has a concave-convex shape, and the concave portion of the light source circuit board is disposed farther from one side of the light guide plate than the convex portion of the light source circuit board.

The first light source is disposed on a recessed portion of the light source circuit board, and the second light source is disposed on a convex portion of the light source circuit board.

The second light source has a closer match rate to the solar spectrum than the first light source.

84 first light sources are disposed along the first side; the 84 first light sources include 7 first light source groups including 12 first light sources connected in series between a first power supply line and a second power supply line; the seven first light source groups are connected in parallel between the first power line and the second power line; another 84 first light sources are disposed along the second side; the other 84 first light sources include 7 second light source groups including 12 first light sources connected in series between the first power supply line and the second power supply line; the seven second light source groups are connected in parallel between the first power line and the second power line; 48 second light sources are disposed along the third side; said 48 second light sources comprising four third light source groups comprising twelve second light sources connected in series between a third power supply line and a fourth power supply line; the four third light source groups are connected in parallel between the third power line and the fourth power line; 48 other second light sources are disposed along the fourth side; the other 48 second light sources include four fourth light source groups comprising 12 second light sources connected in series between the third power supply line and the fourth power supply line; the four fourth light source groups are connected in parallel between the third power line and the fourth power line; first power from the first power supply is supplied to the first power line and the second power line; The second power from the second power supply is supplied to the third power line and the fourth power line.

Each of the first light sources exhibited a 72% coincidence rate with the sunlight spectrum at a color temperature of 2700K, a 71% coincidence rate with the sunlight spectrum at a color temperature of 3000K, and a 72% coincidence rate with the sunlight spectrum at a color temperature of 4000K and shows a 72% coincidence rate with the sunlight spectrum at a color temperature of 5000K, and a 73% coincidence rate with the sunlight spectrum at a color temperature of 6500K; In addition, each of the second light sources exhibits a 92% coincidence rate with the solar spectrum at the color temperature of 2700K, a 90% coincidence rate with the sunlight spectrum at the color temperature of 3000K, and 92% with the sunlight spectrum at the color temperature of 4000K %, and at the color temperature of 5000K, the sunlight spectrum and 93% match rate, and at the color temperature of 6500K, the sunlight spectrum and 94% match rate.

The first light source is a white light LED, and the second light source is a Sunlike LED.

The first light source is a white light LED, and the second light source is a light source emitting ultraviolet rays.

The light source control unit according to the present invention for achieving the above object, according to the power source from the outside, n (n is a natural number greater than 1) of the different types of light sources of different types of light sources are selectively turned on and turn off the remaining n-1 different types of light sources.

The light source controller and the lighting device having the same according to the present invention can provide the following effects.

First, since it is possible to selectively drive different types of light sources, it is possible to selectively light a necessary light source according to a user's purpose of use.

Second, since only one type of light source selected is turned on when it is turned on, the functional effect of the selected light source (eg, the effect of a sun-like LED) can be maximized.

Third, since only one type of light source selected when lighting is turned on, the lifespan of the lighting device may be substantially increased in proportion to the number of types of installed light sources.

Fourth, it is possible to easily determine the type of light currently emitted from the lighting device through the auxiliary light source.

In addition, even though two or more types of light sources are mixed and arranged, only one type of light source is selectively turned on when turned on. Therefore, for example, when only a high-efficiency white LED is selectively turned on, the energy used in the construction of domestic buildings is used. It is advantageous to obtain high-efficiency-related certification according to the Rationalization Act.

1 is a block diagram of a lighting device according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a spectral distribution of the first light source of FIG. 1 .
FIG. 3 is a diagram illustrating a spectral distribution of a second light source of FIG. 1 .
4A and 4B are detailed configuration diagrams of the first channel relay and the second channel relay of FIG. 1 .
5A and 5B are detailed configuration diagrams of the isolator and the switching unit of FIG. 1 .
6 is a block diagram of a lighting device according to another embodiment of the present invention.
7 is a plan view of a lighting device according to an embodiment of the present invention.
FIG. 8 is a cross-sectional view taken along line I-I' of FIG. 7 .
9 is a diagram for explaining a circuit configuration of the first light source module of FIG. 7 .
FIG. 10 is a diagram for explaining a circuit configuration of the second light source module of FIG. 7 .
11 is a plan view of a lighting device according to another embodiment of the present invention.
12 is a plan view of a lighting device according to another embodiment of the present invention.
13 is a plan view of a lighting device according to another embodiment of the present invention.
14 is a plan view of a lighting device according to another embodiment of the present invention.
15 is a plan view of a lighting device according to another embodiment of the present invention.
16 is a plan view of a lighting device according to another embodiment of the present invention.
17 is a plan view of a lighting device according to another embodiment of the present invention.
18 is a cross-sectional view taken along the line II-II' of FIG. 17 .
19 is a plan view of a lighting device according to another embodiment of the present invention.
20 is a cross-sectional view taken along line III-III' of FIG. 19 .
21 is a plan view of a lighting device according to another embodiment of the present invention.
22 is a plan view of a lighting device according to another embodiment of the present invention.
23 is a plan view of a lighting device according to another embodiment of the present invention.
24 is a plan view of a lighting device according to another embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Accordingly, in some embodiments, well-known process steps, well-known device structures, and well-known techniques have not been specifically described in order to avoid obscuring the present invention. Like reference numerals refer to like elements throughout.

In order to clearly express various layers and regions in the drawings, the thicknesses are enlarged. Throughout the specification, like reference numerals are assigned to similar parts. When a part, such as a layer, film, region, plate, etc., is "on" another part, it includes not only the case where it is "directly on" another part, but also the case where there is another part in between. Conversely, when we say that a part is "just above" another part, we mean that there is no other part in the middle. Also, when a part of a layer, film, region, plate, etc. is said to be “under” another part, it includes not only the case where the other part is “directly under” but also the case where there is another part in between. Conversely, when we say that a part is "just below" another part, it means that there is no other part in the middle.

Spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe a correlation between an element or components and other elements or components. Spatially relative terms should be understood as terms including different orientations of the device during use or operation in addition to the orientation shown in the drawings. For example, when an element shown in the figures is turned over, an element described as "beneath" or "beneath" another element may be placed "above" the other element. Accordingly, the exemplary term “below” may include both directions below and above.

In the present specification, when a part is said to be connected to another part, it includes not only a case in which it is directly connected, but also a case in which it is electrically connected with another element interposed therebetween. In addition, when it is said that a part includes a certain component, this means that other components may be further included, rather than excluding other components, unless otherwise stated.

In this specification, terms such as first, second, third, etc. may be used to describe various components, but these components are not limited by the terms. The above terms are used for the purpose of distinguishing one component from other components. For example, without departing from the scope of the present invention, the first component may be referred to as a second or third component, and similarly, the second or third component may also be alternately named.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly specifically defined.

Hereinafter, a light source controller and a lighting device having the same according to the present invention will be described in detail with reference to FIGS. 1 to 24 .

FIG. 1 is a block diagram of a lighting device according to an embodiment of the present invention, FIG. 2 is a view showing a spectral distribution of the first light source 10a of FIG. 1 , and FIG. 3 is a second light source 20a of FIG. 1 ) is a diagram showing the spectral distribution of

As shown in FIG. 1 , the lighting apparatus according to an embodiment of the present invention may include a first light source 10a , a second light source 20a , and a light source controller 1000 .

The first light source 10a generates light. For example, the first light source 10a may be a white light emitting diode (LED) emitting white light. As a specific example, the first light source 10a may include a blue light emitting diode emitting blue light and a phosphor surrounding the blue light emitting diode. Blue light from the blue light emitting diode may be converted into white light while passing through the phosphor. As another specific example, the first light source 10a may include a red light emitting diode emitting red light, a green light emitting diode emitting green light, and a blue light emitting diode emitting blue light. White light may be generated by mixing red light from the red light emitting diode, green light from the green light emitting diode, and blue light from the blue light emitting diode.

The X-axis of FIG. 2 represents the wavelength of light, and the Y-axis of FIG. 2 represents the intensity of light, and the light from the first light source 10a may have a spectral distribution as shown in FIG. 2 . . For example, light from the first light source 10a may have a maximum intensity (eg, 136 mW) at a blue wavelength of 454 nm. Here, the spectral distribution of FIG. 3 shows the spectral distribution at a color temperature (or correlated color temperature) of 5335K. On the other hand, the white light LED used as the first light source 10a exhibits a match rate of 72% with the sunlight spectrum at a color temperature of 2700K, a match rate of 71% with the sunlight spectrum at a color temperature of 3000K, and a color temperature of 4000K. The light spectrum and 72% coincidence rate, and the sunlight spectrum and 72% coincidence rate at a color temperature of 5000K, and 73% coincidence rate with the sunlight spectrum at a color temperature of 6500K.

The second light source 20a generates light. The second light source 20a may be a different type of light source from the first light source 10a. For example, the second light source 20a has a lower light intensity in a blue wavelength region than the first light source 10a, has a lower light efficiency than the first light source 10a, and has a lower light efficiency than the first light source 10a. It can have a closer match rate to the solar spectrum. The second light source 20a having these characteristics may be a natural light LED (Light Emitting Diode). The natural light LED is a light emitting diode that emits light of a spectrum similar to sunlight, and the light from the second light source 20a may have a spectral distribution as shown in FIG. 3 . For example, the X-axis of FIG. 3 represents the wavelength of light, and the Y-axis of FIG. 3 represents the intensity of light. The light from the second light source 20a has a spectrum distribution as shown in FIG. 3 . can have The maximum intensity of light from the second light source 20a in the blue wavelength region is smaller than the maximum intensity of light from the first light source 10a in the blue wavelength region. Here, the spectral distribution of FIG. 3 shows the spectral distribution of the second light source 20a at a color temperature of 3803K. The second light source 20a may include, for example, a Sunlike Light Emitting Diode (LED) manufactured by Seoul Semiconductor Corporation.

The SunLike LED may have a lower light intensity than the white light LED used as the first light source 10a in the blue light wavelength region. For example, when the white light LED used as the first light source 10a in the blue light wavelength region has a light intensity of 136 mW, the Sunlike LED may have a light intensity of 24 mW in the blue light wavelength region. Meanwhile, the SunLike LED may have a higher light intensity compared to the solar spectrum in the blue peak wavelength region of 450 nm.

In addition, the SunLike LED may have a closer match rate to the sunlight spectrum than the white light LED used as the first light source 10a. For example, as described above, the white light LED used as the first light source 10a exhibits a match rate of 72% with the sunlight spectrum at a color temperature of 2700K, and a match rate of 71% with the sunlight spectrum at a color temperature of 3000K, SunLike LED when it shows 72% agreement with the sunlight spectrum at a color temperature of 4000K, 72% agreement with the sunlight spectrum at a color temperature of 5000K, and 73% agreement with the sunlight spectrum at a color temperature of 6500K shows 92% agreement with the solar spectrum at a color temperature of 2700K, 90% agreement with the solar spectrum at a color temperature of 3000K, 92% agreement with the solar spectrum at a color temperature of 4000K, and a solar spectrum at a color temperature of 5000K It can show a 93% coincidence rate with the light spectrum, and a 94% coincidence rate with the sunlight spectrum at a color temperature of 6500K.

In addition, this sun-like LED may have a lower light efficiency than the white light LED used as the first light source 10a. For example, when the white light LED as the first light source 10a has a luminous efficiency of 105 lm/W, the Sunlike LED may have a luminous efficiency of 57.3 lm/W.

The light source control unit 1000 selectively turns on one type of light source among different types of light sources according to an external power source (AC_L; for example, an external power source), and turns off the other types of light sources. can For example, the light source controller 1000 may selectively turn on any one of the first light source 10a and the second light source 20a based on the external power source AC_L, and turn off the other one. Here, the external power source AC_L may be, for example, power provided from the external power supply unit 3000 . The external power AC_L from the external power supply 3000 may be supplied to the light source controller 1000 via the external switch 2000 . The light source control unit 1000 may include a power supply unit.

In this case, the external switch 2000 may be selectively connected to the first lighting terminal 1111 , the second lighting terminal 1112 , and the lighting off terminal 1113 . When the external switch 2000 is operated so that the external power supply 3000 and the first lighting terminal 1111 are electrically connected, only the first light source 10a among the first and second light sources 10a and 20a is selectively turned on and the second light source 20a may be turned off. On the other hand, when the external switch 2000 is operated so that the external power supply unit 3000 and the second lighting terminal 1112 are electrically connected, only the second light source 20a among the first and second light sources 10a and 20a is selective. is turned on, and the first light source 10a may be turned off. Meanwhile, when the external switch 2000 is operated so that the external power supply 3000 and the light-off terminal 1113 are electrically connected, all light sources, that is, the first and second light sources 10a and 20a may all be turned off. Here, the external switch 2000 may include, for example, a physical switch that can be operated by a user. Also, the external switch 2000 may be controlled by a wireless device such as a remote control.

Meanwhile, when there are three or more types of light sources, the light source controller 1000 selectively turns on only one type of light source and turns off other types of light sources. In other words, when n different types of light sources are provided (here, n is a natural number greater than 1), the light source controller 1000 in response to an external power source controls any one of the n different types of light sources. Only one type of light source may be selectively turned on, and the remaining n-1 different types of light sources may be turned off.

The number of the above-described lighting terminals may be the same as the number of different types of light sources. For example, as described above, when n different types of light sources are provided, correspondingly n lighting terminals may be used.

Meanwhile, the light source control unit 1000 of FIG. 1 will be described in more detail with reference to FIGS. 4A, 4B, 5A and 5B as follows.

4A and 4B are detailed configuration views of the first channel relay 1110 and the second channel relay 1120 of FIG. 1, and FIGS. 5A and 5B are the isolator 1200 and the switching unit 1300 of FIG. It is a detailed configuration diagram.

As shown in FIG. 1 , the light source control unit 1000 may include a converter 1500 , a relay 1100 , an isolator 1200 , and a switching unit 1300 .

The converter 1500 may receive the external power AC_L provided from the external power unit 3000 and generate various power sources and various signals based on the supplied external power AC_L. For example, the converter 1500 may reduce or boost external power to generate various types of signals and power sources required for the light source controller 1000 . As a specific example, the converter 1500 includes various ground voltages GND, a first control signal VCC_1, a second control signal VCC_2, and a first light source driving power LED_GND based on the external power source AC_L. and a second light source driving power LED_+ may be generated. Here, the external power is an AC signal, and may alternately have a high voltage AC_L and a low voltage AC_N. Alternatively, the external power source may be an AC power source having a higher voltage and a lower voltage smaller than the neutral voltage AC_N as the center. Meanwhile, the first control signal VCC_1 , the second control signal VCC_2 , the first light source driving power LED_GND and the second light source driving power LED_+ may all be DC signals.

The converter 1500 may include an AC-DC converter that converts AC power into DC power or a DC-DC converter that converts DC power into DC power. Meanwhile, the external power source AC_L may be, for example, an AC power source, but is not limited thereto, and any power source capable of being input to the converter 1500 may be used.

Meanwhile, the converter 1500 itself may be connected to the frame ground F.G.

The relay 1100 may select an input terminal to be supplied with the external power AC_L and select a light source to receive the first light source driving power LED_GND according to the control from the external switch 2000 . The relay 1100 may be, for example, a multi-channel relay including a first channel relay 1110 , a second channel relay 1120 , and a relay controller 1130 .

The first channel relay 1110 selects any one of the first lighting terminal 1111 and the second lighting terminal 1112 according to the switching operation from the external switch 2000, and an external power supply through the selected lighting terminal (AC_L) may be provided. For example, as shown in FIG. 4A , when the external switch 2000 is operated such that the external power supply 3000 and the first lighting terminal 1111 are electrically connected, the first channel relay 1110 is connected to the first and The external power source AC_L is provided by selecting the first lighting terminal 1111 among the second lighting terminals 1111 and 1112 . In other words, when the external power supply 3000 and the first lighting terminal 1111 are electrically connected by the external switch 2000, the first channel relay 1110 is the selected first lighting terminal 1111 and the converter ( 1500), electrically connect the power input terminal. Accordingly, the external power AC_L may be supplied to the converter 1500 through the first lighting terminal 1111 and the first relay 1100 . On the other hand, as shown in FIG. 4B , when the external switch 2000 is operated so that the external power source AC_L and the second lighting terminal 1112 are electrically connected, the first channel relay 1110 operates the first and second The second lighting terminal 1112 is selected among the lighting terminals 1111 and 1112 to receive the external power source AC_L. In other words, when the external power supply 3000 and the second lighting terminal 1112 are electrically connected by the external switch 2000, the first channel relay 1110 is the selected second lighting terminal 1112 and the converter ( 1500), electrically connect the power input terminal. Accordingly, the external power AC_L may be supplied to the converter 1500 through the second lighting terminal 1112 and the first relay 1100 .

The second channel relay 1120 selects one of the first light source 10a and the second light source 20a according to a switching operation from the external switch 2000, and uses the selected light source to drive the first light source (LED_GND) is provided. In other words, in response to the switching operation from the external switch 2000, the second channel relay 1120 uses only one type of light source among the first and second light sources 10a and 20a to drive the first light source ( LED_GND) can be switched to be supplied. For example, as shown in FIG. 4A , when the external switch 2000 is operated so that the external power supply 3000 and the first lighting terminal 1111 are electrically connected, the second channel relay 1120 is connected to the first and A first light source connection terminal 1301 is selected among the second light source connection terminals 1301 and 1302 , and a first control signal VCC_1 is output to the selected first light source connection terminal 1301 . In other words, when the external power supply 3000 and the first lighting terminal 1111 are electrically connected by the external switch 2000, the second channel relay 1120 is the selected first light source connection terminal 1301 and the converter The first control output terminal of 1500 is electrically connected. Accordingly, the first control signal VCC_1 output through the first control output terminal of the converter 1500 may be supplied to the first light source connection terminal 1301 via the second channel relay 1120 . On the other hand, as shown in FIG. 4B , when the external power supply unit 3000 and the second lighting terminal 1112 are electrically connected by the external switch 2000, the second channel relay 1120 is connected to the selected second light source. The terminal 1302 and the first control output terminal of the converter 1500 are electrically connected. Accordingly, the first control signal VCC_1 output through the first control output terminal of the converter 1500 may be supplied to the second light source connection terminal 1302 via the second channel relay 1120 .

The relay controller 1130 may control the operations of the first channel relay 1110 and the second channel relay 1120 described above according to a switching operation from the external switch 2000 . For example, when the external switch 2000 is operated so that the external power supply unit 3000 and the first lighting terminal 1111 are electrically connected, the external power source AC_L from the external power unit 3000 is the relay control unit 1130 . not supplied to In other words, when the external switch 2000 is operated so that the external power supply unit 3000 and the first lighting terminal 1111 are electrically connected, as shown in FIG. 4A , the external power supply unit 3000 and the relay control unit 1130 . Since a current path is not formed between them, the relay control unit 1130 does not operate. Accordingly, no current (hereinafter, coil current) flows to the first and second coils 111c and 112c. Here, the first coil 111c and the second coil 112c are one coil connected in series. Accordingly, the first channel relay 1110 and the second channel relay 1120 are maintained in the initial switching state. Here, as shown in Figure 4a, the initial switching state of the first channel relay 1110 is the first switch 111s of the first channel relay 1110 is the first lighting terminal 1111 and the converter 1500 means a switched state to connect to each other, and the initial switching state of the second channel relay 1120 is that the second switch 112s of the second channel relay 1120 is connected to the first light source connection terminal 1301 and It means a switched state to connect the converter 1500 to each other.

On the other hand, when the external switch 2000 is operated so that the external power supply unit 3000 and the second lighting terminal 1112 are electrically connected, the external power from the external power unit 3000 may be supplied to the relay control unit 1130 . . In other words, when the external switch 2000 is operated so that the external power supply 3000 and the second lighting terminal 1112 are electrically connected, as shown in FIG. 4b , the external power supply 3000 and the relay control unit 1130 . Since a current path may be formed between the two, the relay control unit 1130 may be operated by external power from the external power supply unit 3000 . Accordingly, a coil current may flow to the first and second coils 111c and 112c, thereby generating a magnetic field around the first coil 111c and the second coil 112c. Therefore, as shown in FIG. 4B, the first switch 111s of the first channel relay 1110 by the magnetic field of the first coil 111c is connected to the converter 1500 and the second lighting terminal 1112. and the second switch 112s of the second channel relay 1120 by the magnetic field of the second coil 112c is switched so that the converter 1500 and the second light source connection terminal 1302 are connected to each other.

Meanwhile, the number of the above-described light source connection terminals may be the same as the number of different types of light sources. For example, as described above, when n different types of light sources are provided, n light source connection terminals may be used correspondingly.

The isolator 1200 of FIG. 1 may be used for electrical insulation (or separation, or buffering) between an input signal from the relay 1100 and an output signal to the switching unit 1300 . The isolator 1200 may include a first isolator IST1 and a second isolator IST2 as shown in FIG. 1 .

5A or 5B , the first isolator IST1 may include a photo coupler PHC1. The photo coupler PHC1 may include a light emitting device D1 and a light receiving device PT1 electrically separated from each other as a pair. The light emitting device D1 may include, for example, a diode. The light emitting device D1 may emit light according to the first control signal VCC_1 . The light receiving element PT1 outputs the second control signal VCC_2 according to the light emitted from the light emitting element D1 . The light receiving element PT1 may include a photo transistor whose turn-on is determined according to light.

5A or 5B , the second isolator IST2 may include a photo coupler PHC2. The photo coupler PHC2 may include a light emitting device D2 and a light receiving device PT2 electrically separated from each other as a pair. The light emitting device D2 may include, for example, a diode. The light emitting device D2 may emit light according to the first control signal VCC_1 . The light receiving element PT2 outputs the second control signal VCC_2 according to the light emitted from the light emitting element D2 . The light receiving element PT2 may include a phototransistor whose turn-on is determined according to light.

5A, when the second switch 112s of the second channel relay 1120 is switched to connect the first light source connection terminal 1301 and the converter 1500, the first control signal VCC_1 is applied to the light emitting device D1 of the first isolator IST1. Then, the light emitting element D1 of the first isolator IST1 emits light according to the first control signal VCC_1 , and the emitted light is supplied to the light receiving element PT1 of the first isolator IST1 . . Accordingly, the light receiving element PT1 of the first isolator IST1 is turned on by the light, and the second control signal VCC_2 from the converter 1500 through the turned-on light receiving element PT1 is It is supplied to the switching unit 1300 (eg, TR1) through the first control line 1801.

On the other hand, as shown in FIG. 5B, when the second switch 112s of the second channel relay 1120 is switched to connect the second light source connection terminal 1302 and the converter 1500, the first control signal ( VCC_1) is applied to the light emitting device D2 of the second isolator IST2. Then, the light emitting device D2 of the second isolator IST2 emits light according to the first control signal VCC_1, and the emitted light is supplied to the light receiving device PT2 of the second isolator IST2. . Accordingly, the light receiving element PT2 of the second isolator IST2 is turned on by the light, and the second control signal VCC_2 from the converter 1500 is transmitted through the turned-on light receiving element PT2. It is supplied to the switching unit 1300 (eg, TR2) through the second control line 1802.

Meanwhile, the number of isolators described above may be provided to be the same as the number of light sources of different types. For example, as described above, when n different types of light sources are provided, n isolators may be used correspondingly.

The switching unit 1300 of FIG. 1 supplies the first light source driving power LED_GND to only one light source selected from among the first and second light sources 10a and 20a. The switching unit 1300 may include a first switching element TR1 and a second switching element, as in the example illustrated in FIG. 5A or 5B . The first switching element TR1 and the second switching element TR2 may each include, for example, a field effect transistor.

As shown in FIG. 5A , the second control signal VCC_2 is output only from the first isolator IST1 selectively supplied with the first control signal VCC_1 among the first and second isolators IST1 and IST2. , the second control signal VCC_2 from the first isolator IST1 is supplied to the gate electrode of the first switching element TR1. Accordingly, the first switching element TR1 is turned on, and the first light source driving power LED_GND is supplied only to the first light source 10a through the turned-on first switching element TR1 . Accordingly, only the first light source 10a among the first and second light sources 10a and 20a may selectively emit light. Meanwhile, since the first control signal VCC_1 is not supplied to the second isolator IST2 in FIG. 5A , the second control signal VCC_2 is not output from the second isolator IST2 . Accordingly, the second switching element TR2 is maintained in a turned-off state. Accordingly, in FIG. 5A , the second light source 20a is maintained in an unlit state.

On the other hand, as shown in FIG. 5B , only the second control signal VCC_2 from the second isolator IST2 selectively supplied with the first control signal VCC_1 among the first and second isolators IST1 and IST2 When is outputted, the second control signal VCC_2 from the second isolator IST2 is supplied to the gate electrode of the second switching element TR2. Accordingly, the second switching element TR2 is turned on, and the first light source driving power LED_GND is supplied only to the second light source 20a through the turned-on second switching element TR2 . Accordingly, only the second light source 20a among the first and second light sources 10a and 20a may selectively emit light. Meanwhile, since the first control signal VCC_1 is not supplied to the first isolator IST1 in FIG. 5B , the second control signal VCC_2 is not output from the first isolator IST1 . Accordingly, the first switching element TR1 is maintained in a turned-off state. Accordingly, in FIG. 5B , the first light source 10a is maintained in a light-off state.

Meanwhile, the second light source driving power LED_+ from the converter 1500 may be commonly supplied to the first light source 10a and the second light source 20a. On the other hand, the first light source driving power LED_GND and the second switching element TR2 (for example, The first light source driving power LED_GND applied to the source electrode of the second switching element TR2 may be the same or different from each other. Here, the second light source driving power LED_+ may have a greater value (eg, voltage) than the first light source driving power LED_GND. The first light source driving power LED_GND may be a ground level power, and the second light source driving power LED_+ may be a power having a higher positive voltage level than the first light source driving power LED_GND.

Meanwhile, as shown in FIG. 5A or 5B , a first pull-down resistor R1 may be further connected between the gate electrode and the source electrode of the first switching element TR1 . The first pull-down resistor R1 applies a voltage to the gate electrode of the turned-off first switching element TR1 when the first switching element TR1 is turned off to the voltage of the first light source driving power LED_GND. By falling to the level, leakage current from the first switching element TR1 can be prevented. In the same manner, the second pull-down resistor R2 may be connected between the gate electrode and the source electrode of the second switching element TR2 . The second pull-down resistor R2 applies a voltage to the gate electrode of the turned-off second switching element TR2 when the second switching element TR2 is turned off to the voltage of the first light source driving power LED_GND. By falling to the level, leakage current from the second switching element TR2 can be prevented. In this case, the first light source driving power LED_GND may have a voltage of a ground level.

6 is a block diagram of a lighting device according to another embodiment of the present invention.

As shown in FIG. 6 , the lighting apparatus according to another embodiment of the present invention may further include an attenuation signal output unit 5000 .

The attenuation signal output unit 5000 detects the AC voltage of the first lighting terminal 1111 and converts it into a DC voltage (hereinafter, a first detection voltage), and converts the AC voltage detected from the second lighting terminal 1112 to a DC voltage. (hereinafter referred to as a second detection voltage), measuring a first time point at which the second detection voltage becomes smaller than a preset first reference value, and measuring a second time point at which the first detection voltage becomes higher than a preset second reference value, and , and outputting an attenuation signal to the converter 1500 when the counted time from the first time point to the second time point is less than a preset reference count value. On the other hand, when the counted time is greater than or equal to the reference count value, the attenuation signal output unit 5000 does not output the attenuation signal. Here, the first time point is generated at a time earlier than the second time point.

After the converter 1500 supplies the attenuated driving power having a lower value than the second light source driving power LED_+ to the first light source 10a for a preset time according to the attenuated signal from the attenuated signal output unit 5000 , After the preset time, the second light source driving power LED_+ is applied to the first light source 10a. Accordingly, when the second light source 20a is rapidly switched from the second light source 20a to the first light source 10a having a relatively stronger blue light intensity by manipulation of the external switch 2000, glare of the user can be reduced. In other words, when the switching speed from the second light source 20a to the first light source 10a is faster than a preset speed, the size of the second light source driving power LED_+ supplied to the first light source 10a The glare may be reduced by lowering for the above-described preset time and then increasing it to the second light source driving power LED_+, which is the target voltage. In this case, the converter 1500 may apply the attenuated driving power to the first light source 10a and then linearly (or gradually) increase it to the level of the second light source driving power LED_+, which is the target voltage.

On the other hand, the second light source driving power LED_+ may be commonly supplied to the first light source 10a and the second light source 20a, but the external switch 2000 turns on the first light at the second lighting terminal 1112 Since the first light source driving power LED_GND is not applied to the second light source 20a when switched to be connected to the terminal 1111 , the second light source 20a is not turned on. This is because the second switching element TR2 is turned off when the external switch 2000 is switched to be connected from the second lighting terminal 1112 to the first lighting terminal 1111 . Meanwhile, the second light source driving power LED_+ may be independently provided to the first light source 10a and the second light source 20a through separate power lines. In this case, the second light source driving power LED_+ applied to the first light source 10a and the second light source driving power LED_+ applied to the second light source 20a may have different sizes. Of course, the second light source driving power LED_+ supplied to the first light source 10a and the second light source 20a may be the same. In this case, the second light source driving power LED_+ may be commonly provided to the first light source 10a and the second light source 20a through one power line.

On the other hand, the components of the light source control unit 1000 except for the attenuation signal output unit 5000 of FIG. 6 , the first light source 10a and the second light source 20a are the light source control unit 1000 of FIGS. 1 to 5B described above. ), since they are the same as the first light source 10a and the second light source 20a, their descriptions refer to the descriptions related to FIGS. 1 to 5B described above.

7 is a plan view of a lighting device according to an embodiment of the present invention, and FIG. 8 is a cross-sectional view taken along line II′ of FIG. 7 .

A lighting device according to an embodiment of the present invention, as shown in FIGS. 7 and 8 , a first light source module 10 , a second light source module 20 , a cover part 200 , a support part 500 , It may include a reflective sheet 400 , a light guide plate 100 , a diffusion plate 600 , and light source controllers 1000 and 1000 .

The cover part 200 may include an accommodation space in which the above-described first light source module 10 , the second light source module 20 , the reflective sheet 400 , the light guide plate 100 and the diffusion plate 600 can be accommodated. can In order to secure such a storage space, as in one example shown in FIGS. 1 and 2 , the cover part 200 includes a base part 222 and a plurality of side parts 201 and 202 protruding from the base part 222, 203, 204).

The cover part 200 may include first to fourth side parts 201 , 202 , 203 , and 204 , as in one example shown in FIG. 2 . The first side 201 extends from the first edge of the base 222 along the reverse direction of the Z-axis (hereinafter -Z-axis direction), and the second side 202 extends from the second edge of the base 222 - extending along the Z-axis direction, a third side portion 203 extends from a third edge of the base portion 222 along the -Z-axis direction, and a fourth side portion 204 is a fourth portion of the base portion 222 It extends along the -Z axis direction from the edge. Here, the first side part 201 and the second side part 202 are respectively disposed on the first edge and the second edge of the base part 222 to face each other in the X-axis direction, and the third side part 203 and the second side part 202 The fourth side portions 204 are respectively disposed on the third and fourth edges of the base portion 222 to face each other in the Y-axis direction.

The light guide plate 100 is located inside the cover part 200 . Two surfaces 100a and 100b facing each other in the Z-axis direction among the surfaces of the light guide plate 100 are defined as the lower surface 100a and the upper surface 100b of the light guide plate 100, respectively, and the light guide plate 100 Two surfaces 201 and 202 facing each other in the X-axis direction are defined as the first side surface 101 and the second side surface 102 of the light guide plate 100, respectively, and the surfaces of the light guide plate 100 Two surfaces facing each other in the middle Y-axis direction may be defined as a third side surface 103 and a fourth side surface 104 of the light guide plate 100 , respectively.

Meanwhile, although not shown, a plurality of light guide patterns may be disposed on the upper surface 100b of the light guide plate 100 . These light guide patterns serve to help the light incident on the side surface of the light guide plate 100 to travel to the opposite side surface.

The light guide plate 100 may be made of a light-transmitting material to efficiently guide light, for example, an acrylic resin such as PMMA (PolyMethylMethAcrylate), or a polycarbonate (PC: PolyCarbonate) material. In addition, the light guide plate 100 may be made of a glass material.

The first and second light source modules 10 and 20 are each of the side portions 201 , 202 , 203 , 204 of the cover portion 200 and each of the light guide plate 100 in the storage space of the cover portion 200 described above. It may be disposed between the sides 101 , 102 , 103 , 104 . For example, as shown in FIG. 7 , the first light source module 10 on the left is to be disposed between the first side part 201 of the cover part 200 and the first side surface 101 of the light guide plate 100 . The first light source module 10 on the right side may be disposed between the second side portion 202 of the cover part 200 and the second side surface 102 of the light guide plate 100 , and the second light source module on the upper side The reference numeral 20 may be disposed between the third side portion 203 of the cover portion 200 and the third side surface 103 of the light guide plate 100 , and the second light source module 20 on the lower side is the cover portion 200 . It may be disposed between the fourth side 204 of the light guide plate 100 and the fourth side 104 of the light guide plate 100 .

The first light source module 10 on the left may include a first light source circuit board 10b and at least one first light source 10a mounted on the first light source circuit board 10b. The light exit surface of the first light source 10a faces the first side surface 101 of the light guide plate 100 .

The first light source 10a on the left generates light. The first light source 10a on the left is the same as the first light source 10a of FIG. 1 described above.

When the first light source module 10 on the left includes a plurality of first light sources 10a , the plurality of first light sources 10a are disposed along the first side surface 101 of the light guide plate 100 . For example, the plurality of first light sources 10a are disposed along the Y-axis direction while facing the first side surface 101 of the light guide plate 100 .

One surface of the first light source circuit board 10b on the left may be divided into at least one mounting area and a wiring area. When the first light source module 10 includes a plurality of first light sources 10a, one first light source 10a is disposed in each mounting area, and power is supplied to the first light sources 10a in the wiring area. A plurality of power lines for transmitting the .

Light from the first light source 10a on the left is incident on the first side surface 101 of the light guide plate 100 . The light incident on the first side surface 101 may be totally reflected by the light guide pattern and travel to the second side surface 102 of the light guide plate 100 . At this time, the light incident on the first side surface 101 of the light guide plate 100 travels to the diffusion plate 600 through the lower surface 100a of the light guide plate 100 .

The first light source module 10 on the right side may include a first light source circuit board 10b and at least one first light source 10a mounted on the first light source circuit board 10b. The light exit surface of the first light source 10a faces the second side surface 102 of the light guide plate 100 .

The second light source 20a on the right generates light. The first light source 10a on the right is the same as the first light source 10a of FIG. 1 described above. In other words, the first light source 10a on the left and the first light source 10a on the right are the same type of light source.

When the right first light source module 10 includes a plurality of first light sources 10a , the plurality of first light sources 10a are disposed along the second side surface 102 of the light guide plate 100 . For example, the plurality of first light sources 10a are disposed along the Y-axis direction while facing the second side surface 102 of the light guide plate 100 .

One surface of the first light source circuit board 10b on the right side may be divided into at least one mounting area and a wiring area. When the first light source module 10 on the right includes a plurality of first light sources 10a, one first light source 10a is disposed in each mounting area, and the first light sources 10a are disposed in the wiring area. A plurality of power lines for transmitting power may be disposed.

Light from the first light source 10a on the right is incident on the second side surface 102 of the light guide plate 100 . The light incident on the second side surface 102 may be totally reflected by the light guide pattern and travel to the first side surface 101 of the light guide plate 100 . At this time, the light incident on the second side surface 102 of the light guide plate 100 travels to the diffusion plate 600 through the lower surface 100a of the light guide plate 100 .

The upper second light source module 20 may include a second light source circuit board 20b and at least one second light source 20a mounted on the second light source circuit board 20b. The light exit surface of the second light source 20a faces the third side surface 103 of the light guide plate 100 .

The upper second light source 20a generates light. The upper second light source 20a may be a light source different from that of the first light source 10a. For example, the upper second light source 20a may be the same as the second light source 20a of FIG. 1 described above.

When the upper second light source module 20 includes a plurality of second light sources 20a , the plurality of second light sources 20a are disposed along the third side surface 103 of the light guide plate 100 . For example, the plurality of second light sources 20a are disposed along the X-axis direction while facing the third side surface 103 of the light guide plate 100 .

One surface of the upper second light source circuit board 20b may be divided into at least one mounting area and a wiring area. When the second light source module 20 includes a plurality of second light sources 20a, one second light source 20a is disposed in each mounting area, and power is supplied to the second light sources 20a in the wiring area. A plurality of power lines for transmitting the .

Light from the upper second light source 20a is incident on the third side surface 103 of the light guide plate 100 . The light incident on the third side surface 103 may be totally reflected by the light guide pattern and travel to the fourth side surface 104 of the light guide plate 100 . At this time, the light incident on the third side surface 103 of the light guide plate 100 travels to the diffusion plate 600 through the lower surface 100a of the light guide plate 100 .

The lower second light source module 20 may include a second light source circuit board 20b and at least one second light source 20a mounted on the fourth light source circuit board 20b. The light exit surface of the second light source 20a faces the fourth side surface 104 of the light guide plate 100 .

The lower second light source 20a generates light. The lower second light source 20a may be a different type of light source than the first light source 10a. For example, the lower second light source 20a may be the same as the second light source 20a of FIG. 1 described above.

When the lower second light source module 20 includes a plurality of second light sources 20a , the plurality of second light sources 20a are disposed along the fourth side surface 104 of the light guide plate 100 . For example, the plurality of second light sources 20a are disposed along the X-axis direction while facing the fourth side surface 104 of the light guide plate 100 .

One surface of the lower second light source circuit board 20b may be divided into at least one mounting area and a wiring area. When the second light source module 20 includes a plurality of second light sources 20a, one second light source 20a is disposed in each mounting area, and power is supplied to the second light sources 20a in the wiring area. A plurality of power lines for transmitting the .

Light from the lower second light source 20a is incident on the fourth side surface 104 of the light guide plate 100 . The light incident on the fourth side surface 104 may be totally reflected by the light guide pattern and travel to the third side surface 103 of the light guide plate 100 . At this time, the light incident on the fourth side surface 104 of the light guide plate 100 travels to the diffusion plate 600 through the lower surface 100a of the light guide plate 100 .

The diffusion plate 600 may be disposed under the light guide plate 100 as shown in FIG. 8 . In other words, the diffusion plate 600 may be disposed to face the lower surface 100a of the light guide plate 100 . The diffusion plate 600 disperses the light transmitted from the light guide plate 100 to prevent the light from being partially concentrated.

Meanwhile, although not shown, a light collecting plate may be further disposed below the diffusion plate 600 . The light collecting plate serves to collect the light diffused from the diffusion plate 600 . To this end, triangular prisms may be arranged in a certain arrangement on one surface of the light collecting plate.

In addition, although not shown, a protective plate may be further disposed below the light collecting plate. The guard plate protects the surface of the light collecting plate, and spreads the light to make the light distribution uniform. Meanwhile, a double brightness enhancement film may be used instead of the above-described protective plate.

As shown in FIG. 8 , the reflective sheet 400 may be disposed between the base part 222 of the cover part 200 and the upper surface 100b of the light guide plate 100 . The reflective sheet 400 may increase light efficiency. Light emitted from the first and second light sources 10a and 20a and incident on the reflective sheet 400 through the upper surface 100b of the light guide plate 100 may be reflected by the reflective sheet 400 . The light reflected by the reflective sheet 400 may be incident on the diffusion plate 600 through the lower surface 100b of the light guide plate 100 .

As shown in FIG. 8 , the support part 500 supports the cover part 200 . In addition, the support unit 500 supports the first and second light source modules 10 and 20 , the reflective sheet 400 , the light guide plate 100 , and the diffuser plate 600 disposed in the accommodation space of the cover unit 200 . support To this end, the support part 500 may include a support frame 555 , a first support part 501 , a second support part 502 , and a third support part 503 .

The first support part 501 protrudes toward the diffusion plate 600 from one end of the support frame 555 . The first support part 501 supports the diffusion plate 600 .

The second support 502 protrudes from the first support 501 along the Z-axis direction. The second support part 502 supports the first to fourth sides 201 , 202 , 203 , 204 of the cover part 200 .

The third support part 503 may be fixed to the support frame 555 through the fastening means 550 . The third support part 503 supports the base part 222 of the cover part 200 .

The light source controller 1000 and 1000 may be disposed on the base 222 of the cover 200 . The light source controller 1000 may selectively turn on one type of light source among different types of light sources and turn off the other types of light sources according to the above-described external power source. For example, the light source control unit 1000 and 1000 may include a first light source (eg, the left and right first light sources 10a) and a second light source (eg, upper and lower sides) based on an external power source. One type of light sources among the two light sources 20a) may be selectively turned on, and the other type of light sources may be turned off.

Meanwhile, the power of the power supplied to the light source module including different types of light sources may be different. For example, the power of the power applied to the first light source module 10 including the first light source 10a, which is a white light LED, and the second light source 20a, which is a natural light LED (for example, a Sunlike LED), is included. The power of the power applied to the second light source module 20 may be different from each other. As a specific example, a ratio of power applied to the first light source module 10 to power applied to the second light source module 20 may be 4:1. As a more specific example, when the power applied to the first light source module 10 is 40W, the power applied to the second light source module 20 may be 10W. In this case, 40W of power is applied to the plurality of first light sources 10a of the first light source module 10 , and 10W of power is applied to the plurality of second light sources 20a of the second light source module 20 . This may be authorized. To this end, as an example, the light source control unit 1000, 1000 supplies 40W of power to the first light source modules 10 on the left and right sides, and supplies 10W of power to the upper and lower second light source modules ( 20) can be supplied. In this case, the light source controller 1000 and 1000 may supply power including a voltage of 36V (the voltage of the second light source driving power LED_+).

FIG. 9 is a diagram for explaining the circuit configuration of the first light source module 10 of FIG. 7 , and FIG. 10 is a diagram for explaining the circuit configuration of the second light source module 20 of FIG. 7 .

The first light source module 10 on the left may include 84 first light sources 10a, as in the example shown in FIG. 9 . In this case, the 12 adjacent first light sources 10a may be connected in series between the first power line PL1 and the second power line PL2 . When the 12 first light sources 10a connected in series are defined as the first light source group 10G, each first light source group 10G includes the first power line PL1 and the second power line PL2. connected in parallel between In the example shown in FIG. 9 , the number of the first light source group 10G is 7 in total. Here, the above-described first light source driving power LED_GND may be supplied to the first power line PL1 , and the above-described second light source driving power LED_+ may be supplied to the second power line PL2 . .

The right first light source module 10 may have the same circuit configuration as the left first light source module 10 shown in FIG. 9 . For example, the first light source module 10 on the right may include 84 first light sources 10a. In this case, the 12 adjacent first light sources 10a may be connected in series between the first power line PL1 and the second power line PL2 . When the 12 first light sources 10a connected in series are defined as a second light source group, each second light source group is connected in parallel between the first power line PL1 and the second power line PL2. . There are a total of seven second light source groups.

The upper second light source module 20 may include 48 second light sources 20a as in the example shown in FIG. 10 . In this case, the 12 adjacent second light sources 20a may be connected in series between the third power line PL3 and the fourth power line PL4 . When the 12 light sources connected in series are defined as the third light source group 30G, each third light source group 30G is connected in parallel between the third power line PL3 and the fourth power line PL4. do. In the example shown in FIG. 10 , there are a total of four third light source groups 30G. Here, the above-described first light source driving power LED_GND may be supplied to the third power line PL3 , and the above-described second light source driving power LED_+ may be supplied to the fourth power line PL4 . .

The lower second light source module 20 may have the same circuit configuration as the upper second light source module 20 shown in FIG. 10 . For example, the lower second light source module 20 may include 48 second light sources 20a. In this case, the 12 adjacent second light sources 20a may be connected in series between the third power line PL3 and the fourth power line PL4 . When the 12 light sources connected in series are defined as the fourth light source group, each fourth light source group is connected in parallel between the third power line PL3 and the fourth power line PL4. This fourth light source group is four in total.

Here, as shown in FIG. 7 , 84 first light sources 10a included in the first light source module 10 on the left are disposed along the first side 101 of the light guide plate 100 , and the 84 first light sources 10a included in one light source module 10 are disposed along the second side surface 102 of the light guide plate 100 , and 48 second light sources included in the second light source module 20 on the upper side The light sources 20a are disposed along the third side surface 103 of the light guide plate 100 , and 48 second light sources 20a included in the lower second light source module 20 are provided on the fourth side surface of the light guide plate 100 . It is arranged along the 104, the power of 40W is supplied to the 84 first light sources 10a of the first light source module 10 on the left side, and the 84 first light sources of the first light source module 10 on the right side 40W of power is supplied to the 10a, and 10W of power is supplied to the 48 second light sources 20a of the upper second light source module 20, and 48 of the lower second light source module 20 Power of 10W is supplied to the second light sources 20a, and the 84 left first light sources 10a and 84 right first light sources 10a are the above-described white light LEDs, respectively, and 48 upper The second light sources 20a and the 48 lower second light sources 20a may each be the above-described natural light LEDs (eg, sun-like LEDs).

11 is a plan view of a lighting device according to another embodiment of the present invention.

According to the lighting device of the present invention having the structure of FIG. 11 , the first light sources 10a of the first light source module 10 are arranged along the first side surface 101 of the light guide plate 100, and the second light source module ( The second light sources 20a of 20 may be disposed along the third side surface 103 of the light guide plate 100 .

The first light sources 10a of the first light source module 10 are the above-described white light LEDs, respectively, and the second light sources 20a of the second light source module 20 are the above-described natural light LEDs (eg, Sunlike LEDs), respectively. ) can be

Also, a ratio of power applied to the first light source module 10 to power applied to the second light source module 20 may be 4:1. As a more specific example, when the power applied to the first light sources 10a of the first light source module 10 is 40W, the power applied to the second light sources 20a of the second light source module 20 is 10W can be

Meanwhile, since the remaining components of FIG. 11 are the same as the above-described components of FIGS. 7 and 8 , the descriptions of the remaining components not described in FIG. 11 refer to FIGS. 7 and 8 and related descriptions.

12 is a plan view of a lighting device according to another embodiment of the present invention.

According to the lighting device of the present invention having the structure of FIG. 12 , the first light sources 10a of the first light source module 10 are disposed along the second side surface 102 of the light guide plate 100, and the second light source module ( The second light sources 20a of 20 may be disposed along the third side surface 103 of the light guide plate 100 .

The first light sources 10a of the first light source module 10 are the above-described white light LEDs, respectively, and the second light sources 20a of the second light source module 20 are the above-described natural light LEDs (eg, Sunlike LEDs), respectively. ) can be

Also, a ratio of power applied to the first light source module 10 to power applied to the second light source module 20 may be 4:1. As a more specific example, when the power applied to the first light sources 10a of the first light source module 10 is 40W, the power applied to the second light sources 20a of the second light source module 20 is 10W can be

Meanwhile, since the remaining components of FIG. 12 are the same as the above-described components of FIGS. 7 and 8 , the descriptions of the remaining components not described in FIG. 12 refer to FIGS. 7 and 8 and related descriptions.

13 is a plan view of a lighting device according to another embodiment of the present invention.

According to the lighting device of the present invention having the structure of FIG. 13 , the first light sources 10a of the first light source module 10 are disposed along the second side surface 102 of the light guide plate 100, and the second light source module ( The second light sources 20a of 20 may be disposed along the fourth side surface 104 of the light guide plate 100 .

The first light sources 10a of the first light source module 10 are the above-described white light LEDs, respectively, and the second light sources 20a of the second light source module 20 are the above-described natural light LEDs (eg, Sunlike LEDs), respectively. ) can be

Also, a ratio of power applied to the first light source module 10 to power applied to the second light source module 20 may be 4:1. As a more specific example, when the power applied to the first light sources 10a of the first light source module 10 is 40W, the power applied to the second light sources 20a of the second light source module 20 is 10W can be

Meanwhile, since the remaining components of FIG. 13 are the same as the above-described components of FIGS. 7 and 8 , the descriptions of the remaining components not described in FIG. 13 refer to FIGS. 7 and 8 and related descriptions.

14 is a plan view of a lighting device according to another embodiment of the present invention.

According to the lighting device of the present invention having the structure of FIG. 14 , the first light sources 10a of the first light source module 10 are disposed along the first side surface 101 of the light guide plate 100, and the second light source module ( The second light sources 20a of 20 may be disposed along the fourth side surface 104 of the light guide plate 100 .

The first light sources 10a of the first light source module 10 are the above-described white light LEDs, respectively, and the second light sources 20a of the second light source module 20 are the above-described natural light LEDs (eg, Sunlike LEDs), respectively. ) can be

Also, a ratio of power applied to the first light source module 10 to power applied to the second light source module 20 may be 4:1. As a more specific example, when the power applied to the first light sources 10a of the first light source module 10 is 40W, the power applied to the second light sources 20a of the second light source module 20 is 10W can be

Meanwhile, since the remaining components of FIG. 14 are the same as the above-described components of FIGS. 7 and 8 , the descriptions of the remaining components not described in FIG. 14 refer to FIGS. 7 and 8 and related descriptions.

15 is a plan view of a lighting device according to another embodiment of the present invention.

According to the lighting device of the present invention having the structure of FIG. 15 , the first light sources 10a of the first light source module 10 are disposed along the first side surface 101 of the light guide plate 100, and the second light source module ( The second light sources 20a of 20 may be disposed along the second side surface 102 of the light guide plate 100 .

The first light sources 10a of the first light source module 10 are the above-described white light LEDs, respectively, and the second light sources 20a of the second light source module 20 are the above-described natural light LEDs (eg, Sunlike LEDs), respectively. ) can be

Also, a ratio of power applied to the first light source module 10 to power applied to the second light source module 20 may be 4:1. As a more specific example, when the power applied to the first light sources 10a of the first light source module 10 is 40W, the power applied to the second light sources 20a of the second light source module 20 is 10W can be

Meanwhile, since the remaining components of FIG. 15 are the same as the above-described components of FIGS. 7 and 8 , the descriptions of the remaining components not described in FIG. 15 refer to FIGS. 7 and 8 and related descriptions.

On the other hand, although not shown, in FIG. 15 , the second light sources 20a of the second light source module 20 are the above-described white light LEDs, respectively, and the first light sources 10a of the first light source module 10 are respectively the above-described white light LEDs. It may be a natural light LED (eg, a Sunlike LED). In this case, the ratio of the power applied to the second light source module 20 to the power applied to the first light source module 10 may be 4:1.

16 is a plan view of a lighting device according to another embodiment of the present invention.

According to the lighting device of the present invention having the structure of FIG. 16 , the first light sources 10a of the first light source module 10 are disposed along the third side surface 103 of the light guide plate 100, and the second light source module ( The second light sources 20a of 20 may be disposed along the fourth side surface 104 of the light guide plate 100 .

The first light sources 10a of the first light source module 10 are the above-described white light LEDs, respectively, and the second light sources 20a of the second light source module 20 are the above-described natural light LEDs (eg, Sunlike LEDs), respectively. ) can be

Also, a ratio of power applied to the first light source module 10 to power applied to the second light source module 20 may be 4:1. As a more specific example, when the power applied to the first light sources 10a of the first light source module 10 is 40W, the power applied to the second light sources 20a of the second light source module 20 is 10W can be

Meanwhile, since the remaining components of FIG. 16 are the same as the above-described components of FIGS. 7 and 8 , the descriptions of the remaining components not described in FIG. 16 refer to FIGS. 7 and 8 and related descriptions.

On the other hand, although not shown, in FIG. 16 , the second light sources 20a of the second light source module 20 are the above-described white light LEDs, respectively, and the first light sources 10a of the first light source module 10 are respectively described above It may be a natural light LED (eg, a Sunlike LED). In this case, the ratio of the power applied to the second light source module 20 to the power applied to the first light source module 10 may be 4:1.

17 is a plan view of a lighting device according to another embodiment of the present invention, and FIG. 18 is a cross-sectional view taken along line II-II′ of FIG. 17 .

The lighting device of the present invention having the structure of FIGS. 17 and 18 may be a direct-type lighting device that does not include the light guide plate 100 .

The lighting device of the present invention having the structure of FIG. 17 may include first and second light source modules 10 and 20 disposed on the base 222 of the cover 200 .

The upper first light source module 10 includes a plurality of first light sources 10a and a first light source circuit board 10b, and the lower first light source module 10 includes a plurality of first light sources 10a. and a first light source circuit board 10b, the upper second light source module 20 includes a plurality of second light sources 20a and a second light source circuit board 20b, and the lower second light source module 20 includes a second light source circuit board 20b. The second light source module 20 may include a plurality of second light sources 20a and a second light source circuit board 20b.

The upper and lower first light source modules 10 may be disposed between the upper second light source module 20 and the lower second light source module 20 .

The first light sources 10a of the upper and lower first light source modules 10 may be the above-described white light LEDs, respectively, and the second light sources 20a of the upper and lower second light source modules 20 are respectively It may be a natural light LED (eg, a Sunlike LED).

The first light sources 10a of the upper and lower first light source modules 10 are supplied with the first light source driving power LED_GND through the above-described first switching elements TR1 (TR1), and the upper and lower first light sources 10a The second light sources 20a of the second light source modules 20 may receive the first light source driving power LED_GND through the second switching elements TR2 and TR2 described above.

A ratio of power applied to the upper and lower first light source modules 10 to power applied to the upper and lower second light source modules 20 may be 4:1. As a more specific example, when the power applied to the first light sources 10a of the first light source module 10 is 40W, the power applied to the second light sources 20a of the second light source module 20 is 10W can be

On the other hand, since the remaining components of FIGS. 17 and 18 are the same as the above-described components of FIGS. 7 and 8, the description of the remaining components not described in FIG. 17 includes FIGS. 7 and 8 and related descriptions. see

On the other hand, although not shown, the positions of the first light source modules 10 and the second light source modules 20 may be changed from each other in FIG. 17 . In other words, the first light source modules 10 are moved to the positions of the second light source modules 20 shown in FIG. 17 , and the second light source modules 20 are the first light source modules 10 shown in FIG. 17 . ) is free to move to the location of

On the other hand, in FIG. 17 , the first light source 10a and the second light source 20a arranged along the X-axis direction may be alternately arranged (see FIG. 22 ), and the first light source 10a and the second light source 20a arranged along the X-axis direction may also be alternately arranged along the Y-axis direction. 10a) and the second light source 20a may be alternately arranged (see FIG. 22 ). In other words, the first light source 10a and the second light source 10a may be arranged in a check pattern. In this case, the second light source 20a is disposed immediately to the left, right, immediately above, and directly below the single first light source 10a. Similarly, the first light source 10a is disposed immediately to the left, right, immediately above, and directly below the second light source 20a.

19 is a plan view of a lighting device according to another embodiment of the present invention, and FIG. 20 is a cross-sectional view taken along line III-III′ of FIG. 19 .

The lighting device of the present invention having the structure of FIGS. 19 and 20 is a hybrid type lighting device, and includes a first light source 10a arranged along the first side surface 101 of the light guide plate 100 . The light source module 10 and the second light source module 20 disposed on the base 222 of the cover unit 200 may be included. In this case, the second light source module 20 may be disposed between the base part 222 and the upper surface 100b of the light guide plate 100 . Meanwhile, when a plurality of second light source modules 20 are provided, as shown in FIG. 19 , the plurality of second light source modules 20 may be arranged in a line along the Y-axis direction.

The first light source module 10 may include a plurality of first light sources 10a and a first light source circuit board 10b, and the plurality of first light sources 10a are the first light sources of the light guide plate 100 . They may be arranged in a line along the Y-axis direction while facing the side surface 101 . Each of the first light sources 10a may be the above-described white light LED.

The second light source module 20 may include a plurality of second light sources 20a and a second light source circuit board 20b, and the plurality of second light sources 20a are arranged in a line along the X-axis direction. can be arranged. The second light sources 20a may each be the above-described natural light LEDs (eg, sun-like LEDs).

The first light sources 10a of the first light source modules 10 are supplied with the first light source driving power LED_GND through the above-described first switching elements TR1 (TR1), and the second light source modules 20 The second light sources 20a may receive the first light source driving power LED_GND through the second switching elements TR2 and TR2 described above.

A ratio of the power of the power applied to the first light source module 10 to the power of the power applied to the second light source module 20 (or the second light source modules 20 ) may be 4:1. As a more specific example, when the power applied to the first light sources 10a of the first light source module 10 is 40W, the second light source module 20 (or the second light source modules 20 ) Power applied to the light sources 20a may be 10W.

Meanwhile, the light guide plate 100 of FIGS. 19 and 20 includes a light guide pattern. For example, light guide patterns may be disposed on the upper surface of the light guide plate 100 , and the white light LED (ie, the second light source 20a) receives the light guide patterns from the upper surface 100a of the light guide plate 100 by the light guide patterns. The light intensity in the blue wavelength region of the light incident to the ?

Meanwhile, since the remaining components of FIGS. 19 and 20 are the same as the above-described components of FIGS. 7 and 8 , the description of the remaining components not described in FIGS. 19 and 20 is shown in FIGS. 7, 8 and See the related description.

21 is a plan view of a lighting device according to another embodiment of the present invention.

The lighting apparatus of the present invention having the structure of FIG. 21 is substantially the same as the lighting apparatus of the present invention having the structure of FIGS. 19 and 20 described above. However, according to the lighting device of the present invention having the structure of FIG. 21 , the farther the second light sources 20a of the second light source module 20 are from the first light source module 10 (or the first light source 10a), the more , a distance between adjacent second light sources 20a may gradually decrease. Accordingly, a deviation in the amount of light in the vicinity of the first side 101 and the vicinity of the second side 102 of the light guide plate 100 may be minimized. That is, the first light sources 10a are disposed closer to the first side surface 101 than the second side surface 102 of the light guide plate 100, so that the light from the first light sources 10a is transmitted to the light guide plate ( 100 may decrease nearer on the second side 102 than on the first side 101 . However, since a relatively larger number of second light sources 20a are densely disposed near the second side surface 102 of the light guide plate 100 than near the first side surface 101, the light generated by the second light sources 20a The amount of light in the vicinity of the second side surface 102 may be compensated by the light. Accordingly, the deviation of the amount of light between the first side 101 and the second side 102 may be reduced.

The first light source module 10 may include a plurality of first light sources 10a and a first light source circuit board 10b, and the plurality of first light sources 10a are the first light sources of the light guide plate 100 . They may be arranged in a line along the Y-axis direction while facing the side surface 101 . Each of the first light sources 10a may be the above-described white light LED.

The second light source module 20 may include a plurality of second light sources 20a and a second light source circuit board 20b, and the plurality of second light sources 20a are arranged in a line along the X-axis direction. can be arranged. The second light sources 20a may each be the above-described natural light LEDs (eg, sun-like LEDs).

The first light sources 10a of the first light source modules 10 are supplied with the first light source driving power LED_GND through the above-described first switching elements TR1 (TR1), and the second light source modules 20 The second light sources 20a may receive the first light source driving power LED_GND through the second switching elements TR2 and TR2 described above.

A ratio of the power of the power applied to the first light source module 10 to the power of the power applied to the second light source module 20 (or the second light source modules 20 ) may be 4:1. As a more specific example, when the power applied to the first light sources 10a of the first light source module 10 is 40W, the second light source module 20 (or the second light source modules 20 ) Power applied to the light sources 20a may be 10W.

Meanwhile, since the remaining components of FIG. 21 are the same as the above-described components of FIGS. 19 and 20 , the descriptions of the remaining components not described in FIG. 21 refer to FIGS. 19 and 20 and related descriptions.

Meanwhile, the light guide plate 100 of FIG. 21 includes a light guide pattern.

22 is a plan view of a lighting device according to another embodiment of the present invention.

The lighting device of the present invention having the structure of FIG. 22 may include a light source module 11 including a first light source 11a, a second light source 12a, and a light source circuit board 13b. In this case, the first light source 11a and the second light source 12a may be alternately disposed along the first side surface 101 of the light guide plate 100 .

The first light sources 11a may each be the above-described white light LEDs, and the second light sources 12a may each be the above-described natural light LEDs (eg, sun-like LEDs).

The first light sources 11a receive the first light source driving power LED_GND through the above-described first switching elements TR1 (TR1), and the second light sources 20a are supplied with the above-described second switching elements TR2. The first light source driving power LED_GND may be supplied through TR2 .

A ratio of the power of the power applied to the first light sources 11a and the power of the power applied to the second light sources 12a may be 4:1. As a more specific example, when the power applied to the first light sources 11a is 40W, the power applied to the second light sources 12a may be 10W.

Meanwhile, since the remaining components of FIG. 22 are the same as the above-described components of FIGS. 7 and 8 , the descriptions of the remaining components not described in FIG. 22 refer to FIGS. 7 and 8 and related descriptions.

Meanwhile, the light guide plate 100 of FIG. 22 includes a light guide pattern.

23 is a plan view of a lighting device according to another embodiment of the present invention.

The lighting apparatus of the present invention having the structure of Fig. 23 is substantially the same as the lighting apparatus of the present invention having the structure of Fig. 22 described above. However, according to the lighting device of the present invention having the structure of FIG. 23 , the first light source 11a is disposed farther from the first side surface 101 of the light guide plate 100 than the second light source 12a. In other words, the distance between the first light source 11a and the first side surface 101 of the light guide plate 100 is greater than the distance between the second light source 12a and the first side surface 101 of the light guide plate 100 . To this end, the light source circuit board 13b of the light source module 11 may have an uneven shape. The recessed portion 71 of the light source circuit board 13b is disposed farther from the first side surface 101 of the light guide plate 100 than the convex portion 72 . The first light source 11a may be disposed on the concave portion 71 of the light source circuit board 11 , and the second light source 12a may be disposed on the convex portion 72 of the light source circuit board 11 .

The first light sources 11a may each be the above-described white light LEDs, and the second light sources 12a may each be the above-described natural light LEDs (eg, sun-like LEDs).

The first light sources 11a receive the first light source driving power LED_GND through the above-described first switching elements TR1 (TR1), and the second light sources 20a are supplied with the above-described second switching elements TR2. The first light source driving power LED_GND may be supplied through TR2 .

A ratio of the power of the power applied to the first light sources 11a and the power of the power applied to the second light sources 12a may be 4:1. As a more specific example, when the power applied to the first light sources 11a is 40W, the power applied to the second light sources 12a may be 10W.

In addition, since the first light source 11a, which is a white light LED, is disposed farther from the light guide plate 100 than the second light source 12a, which is a natural light LED, the light in the blue wavelength region of the light incident to the light guide plate 100 from the white light LED age may be further reduced.

Meanwhile, the light guide plate 100 of FIG. 23 includes a light guide pattern.

24 is a plan view of a lighting device according to another embodiment of the present invention.

Meanwhile, as shown in FIG. 24 , the lighting device of the present invention may further include a first auxiliary light source 10c and a second auxiliary light source 10d disposed on the edge of the cover part 200 . For example, the first light source 10a and the second light source 20a are surrounded by the first to fourth side portions 201 , 202 , 203 , and 204 of the cover part 200 to define an accommodation space (or accommodation). region), the first auxiliary light source 10c and the second auxiliary light source 10d described above are any one of the first to fourth sides 201 , 202 , 203 , 204 defining an accommodation space thereof. can be placed in

The first auxiliary light source 10c may be electrically connected to the above-described first light source 10a. For example, the first auxiliary light source 10c may be connected in series to the first light source 10a. Accordingly, the first auxiliary light source 10c operates in the same manner as the first light source 10a. In other words, when the first light source 10a is turned on, the first auxiliary light source 10c is turned on at the same time, and when the first light source 10a is turned off, the first auxiliary light source 10c is turned off at the same time. Meanwhile, the first auxiliary light source 10c may have a smaller size than the first light source 10a. Also, the first auxiliary light source 10c may have a color different from that of the first light source 10a.

The second auxiliary light source 10d may be electrically connected to the above-described second light source 20a. For example, the second auxiliary light source 10d may be connected in series to the second light source 20a. Accordingly, the second auxiliary light source 10d operates in the same manner as the second light source 20a. In other words, when the second light source 20a is turned on, the second auxiliary light source 10d is turned on at the same time, and when the second light source 20a is turned off, the second auxiliary light source 10d is turned off at the same time. Meanwhile, the second auxiliary light source 10d may have a smaller size than the second light source 20a. Also, the second auxiliary light source 10d may have a color different from that of the second light source 20a.

The first auxiliary light source 10c and the second auxiliary light source 10d may emit light of different colors. For example, the light provided by the first auxiliary light source 10c may have a complementary color relationship with the light provided by the second auxiliary light source 10d. As a specific example, when the first auxiliary light source 10c is a light source emitting yellow light, the second auxiliary light source 10d may be a light source emitting blue light. Accordingly, the colors of the first auxiliary light source 10c and the second auxiliary light source 10d may be clearly distinguished.

On the other hand, the cover part 200 is the first auxiliary light source 10c and the second auxiliary light source 10d respectively disposed on the edge (for example, the side of the cover) so as to correspond to the first cover portion 200, respectively. It may have a through hole H1 and a second through hole H2. The first auxiliary light source 10c may emit light to the outside through the first through hole H1, and the second auxiliary light source 10d may emit light to the outside through the second through hole H2. .

In this case, the first through-hole H1 and the second through-hole H2 may have different shapes. For example, as shown in FIG. 24 , the first through hole H1 may have a rectangular shape, and the second through hole H2 may have a rhombic shape. However, the shape of the first through hole H1 and the second through hole H2 is not limited thereto, and for example, it may have any shape such as a triangular shape and a circular shape.

The first auxiliary light source 10c and the second auxiliary light source 10d may each include, for example, an LED.

By such auxiliary light sources 10c and 10d, the user can easily determine what kind of light is currently emitted from the lighting device.

Meanwhile, the number of the aforementioned auxiliary light sources may be the same as the number of different types of light sources. For example, as described above, when n different types of light sources are provided, n auxiliary light sources may be used correspondingly.

Further, in all the above-described embodiments, the first light source 10a may be the above-described white LED, and the second light source 20a may be an LED emitting ultraviolet light (ultraviolet ray or ultraviolet light). At this time, the ultraviolet rays are UV-A having a wavelength in the range of 315 nm to 400 nm, UV-B having a wavelength in the range of 280 nm to 315 nm, and UV-C (or Deep UV) having a wavelength in the range of 100 nm to 280 nm. may be any one of

As another variant embodiment, the n different types of light sources are that the first light source 10a is a white LED as described above, the second light source 20a is a Sunlike LED, and the third light source is an ultraviolet LED. can

In yet another variant embodiment, the first light source 10a is a white LED as described above, and the second light source 20a is a Sunlike LED, the third light source is a UV-A LED, and the fourth light source is a UV- B LED, and the fifth light source may be a UV-C LED.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the technical field to which the present invention pertains that various substitutions, modifications and changes are possible without departing from the technical spirit of the present invention. It will be clear to those who have the knowledge of

1000: light source control unit 1100: relay
1110: first channel relay 1120: second channel relay
1500: converter 2000: external switch
3000: external power unit 1130: relay control unit
1301: a first light source connection terminal 1302: a second light source connection terminal
1111: first lighting terminal 1112: second lighting terminal
1113: light off terminal 1200: isolator
IST1: first isolator IST2: second isolator
1300: switching unit TR1: first switching element
TR2: second switching element 10a: first light source
20a: second light source 1801: first control line
1802: second control line AC_L: external power
VCC_1: first control signal VCC_2: second control signal
GND: ground signal LED_GND: first light source driving power
LED_+: second light source driving power

Claims (33)

at least two different types of light sources; and
a light source control unit that selectively turns on one type of light source among the different types of light sources according to power from the outside, and turns off the other types of light sources,
The at least two different types of light sources may include: a first light source; and a second light source having lower light efficiency than the first light source and having a lower light intensity than the first light source in a blue light wavelength region,
According to the power from the outside, the light source control unit selectively turns on any one of the first light source and the second light source, and turns off the other,
The light source control unit may include: a first channel relay that selects any one of the first lighting terminal and the second lighting terminal according to a switching operation from an external switch, and receives external power through the selected lighting terminal; and a second channel relay that selects one of the first light source and the second light source according to a switching operation from the external switch, and provides light source driving power based on the external power to the selected light source. . delete delete delete The method of claim 1,
The light source control unit,
The lighting device further comprising a relay control unit for controlling the operation of the first channel relay and the second channel relay according to a switching operation from the external switch. 6. The method of claim 5,
When the first channel relay selects the second lighting terminal according to a switching operation from the external switch, the external power is supplied to the second lighting terminal and the relay control unit together. 6. The method of claim 5,
The light source control unit,
and a converter receiving external power through the first channel relay and generating the light source driving power. 8. The method of claim 7,
The light source control unit,
A gate electrode connected to the first light source connection terminal among first and second light source connection terminals switched by the second channel relay, a source electrode connected to an output terminal of a converter outputting the light source driving power, and the first light source a first switching element including a drain electrode connected to; and
Lighting further comprising at least one of a second switching element including a gate electrode connected to the second light source connection terminal, a source electrode connected to an output terminal of a converter outputting the light source driving power, and a drain electrode connected to the second light source Device. 9. The method of claim 8,
The light source control unit,
a first isolator connected between the first light source connection terminal and the gate electrode of the first switching element; and
The lighting device further comprising at least one of a second isolator connected between the second light source connection terminal and the gate electrode of the second switching element. The method of claim 1,
a cover in which the at least two different types of light sources are accommodated; and
The lighting device further comprising at least two auxiliary light sources electrically connected to each of the at least two different types of light sources and disposed at an edge of the cover part. 11. The method of claim 10,
A lighting device in which a light source and an auxiliary light source electrically connected to each other provide light of different colors. 11. The method of claim 10,
The auxiliary light sources provide light of different colors. 13. The method of claim 12,
The auxiliary light sources provide light of a color having a complementary color relationship. 11. The method of claim 10,
The cover portion has at least two through-holes disposed at the edges of the cover portion so as to correspond to the at least two mutually auxiliary light sources. 15. The method of claim 14,
The at least two through-holes have different shapes. delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete

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