JP2020107422A - Illumination device and illumination system - Google Patents

Abstract

To provide an illumination device emitting light fitted to various situations.SOLUTION: An illumination device 10 according to one embodiment of the present invention includes a light emitting device 1, a first sensor 91 and a controller 71. The first sensor 91 receives external information and transmits the external information as first external information. The controller 71 controls a current or voltage to be applied to the light emitting device 1, based on the first external information from the first sensor 91.SELECTED DRAWING: Figure 9

Description

The present invention relates to a lighting device and a lighting system using LEDs and the like.

2. Description of the Related Art In recent years, an illumination device using a semiconductor light emitting element such as an LED (Light Emitting Diode) as a light source has been used instead of a fluorescent lamp or a light bulb. Further, for example, an illumination device using a light emitting element as a light source is also used as a light source for visual inspection of a painted surface of home electric appliances and passenger cars.

The semiconductor light emitting device has a narrow wavelength band of emitted light and can only emit light of a single color. When the illumination light is desired to be white light, a plurality of semiconductor light emitting elements having different wavelength bands of emitted light are prepared, and white light is realized by mixing the plurality of emitted light. Alternatively, a plurality of phosphors that emit fluorescence of different wavelength bands by excitation light of the same wavelength are prepared, and the emitted light from the semiconductor light emitting element and the plurality of fluorescent light that is excited by the emitted light from the semiconductor light emitting element to emit light. White light is realized by mixing colors. By using such a color mixing method, it is possible to manufacture a light source having a spectrum other than white light according to the purpose (see Patent Document 1).

JP, 2005-126160, A

However, the technique disclosed in Patent Document 1 is not supposed to control the light emission intensity and the light emission spectrum of the lighting device, and the control may be difficult.

An illumination device according to an embodiment of the present invention includes a light emitting device, a first sensor, and a controller. The first sensor receives external information. The control unit controls the current or voltage applied to the light emitting device.

An illumination system according to an embodiment of the present invention includes a light emitting device, a first sensor, a receiver, a controller, a second sensor, and a calculator. The first sensor receives the external information and wirelessly transmits it as the first external information. The receiving unit receives the first external information. The second sensor receives information on the light emitted from the light emitting device and wirelessly transmits the second external information to the receiving unit. The arithmetic unit is electrically connected to the control unit, compares the first external information with the second external information, and performs arithmetic processing. The control unit further controls the current or voltage applied to the light emitting device based on the arithmetic processing.

According to the lighting device of one embodiment of the present invention, with the above configuration, the emission spectrum can be controlled, and thus light can be emitted according to various situations.

FIG. 2 is an external perspective view of a light emitting device according to an embodiment of the present invention. It is sectional drawing when the light emitting device shown in FIG. 1 is cut|disconnected by the plane shown by a virtual line. It is sectional drawing when other embodiment of the light-emitting device shown in FIG. 1 is cut|disconnected by the plane shown by a virtual line. FIG. 3 is an enlarged view of the light emitting device shown in FIG. 2. 3 is a graph showing a spectrum of externally radiated light in the light emitting device of the embodiment of the present invention. It is an appearance perspective view of an illuminating device provided with a light emitting device concerning an embodiment of the present invention. It is a disassembled perspective view of the illuminating device which concerns on embodiment of this invention. It is a perspective view which shows the state which removed the transparent substrate from the housing|casing of the illuminating device which concerns on embodiment of this invention. It is a figure showing composition of an illuminating device and an illuminating system concerning an embodiment of the present invention. It is a figure showing composition of an illuminating device and an illuminating system concerning an embodiment of the present invention. It is the figure which showed the structure of the illuminating device which concerns on embodiment of this invention.

A light emitting device, a lighting device, and a lighting system according to embodiments of the present invention will be described below with reference to the drawings.

<Configuration of light emitting device and lighting device>
FIG. 1 is an external perspective view of a light emitting device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the light emitting device shown in FIG. 1 taken along a plane indicated by an imaginary line. FIG. 3 is a cross-sectional view of the light emitting device shown in FIG. 1 taken along a plane indicated by an imaginary line. FIG. 4 is an enlarged view of the light emitting device shown in FIG. FIG. 5 is a graph showing a spectrum of externally emitted light in the light emitting device according to the embodiment of the present invention. In these drawings, the light emitting device 1 includes a substrate 2, a light emitting element 3, a frame body 4, a sealing member 5, and a wavelength conversion member 6.

The light emitting device 1 includes a substrate 2, a light emitting element 3 provided on the substrate 2, a frame body 4 provided on the substrate 2 so as to surround the light emitting element 3, and an inner space surrounded by the frame body 4. The upper surface of the sealing member 5 is filled with the sealing member 5 which is filled with the upper part of the space surrounded by the frame body 4 and a part of the upper part of the inner space surrounded by the frame body 4. And a wavelength conversion member 6 that is provided so as to be accommodated in the frame body 4 along. The light emitting element 3 is, for example, an LED, and emits light toward the outside by recombination of electrons and holes in a pn junction using a semiconductor.

The substrate 2 is an insulating substrate and is made of, for example, a ceramic material such as alumina or mullite, or a glass ceramic material. Alternatively, it is composed of a composite material in which a plurality of materials among these materials are mixed. Further, the substrate 2 may be made of a polymer resin in which metal oxide fine particles capable of adjusting the thermal expansion of the substrate 2 are dispersed.

At least the main surface of the substrate 2 or the inside of the substrate 2 is provided with a wiring conductor that electrically connects the inside and the outside of the substrate 2. The wiring conductor is made of a conductive material such as tungsten, molybdenum, manganese, or copper. When the substrate 2 is made of a ceramic material, for example, a metal paste obtained by adding an organic solvent to powder of tungsten or the like is printed on a ceramic green sheet to be the substrate 2 in a predetermined pattern, and a plurality of ceramic green sheets are laminated. Then, it is obtained by firing. A plating layer of, for example, nickel or gold is formed on the surface of the wiring conductor to prevent oxidation. Further, on the upper surface of the substrate 2, in order to efficiently reflect light above the substrate 2, a metal reflective layer of, for example, aluminum, silver, gold, copper or platinum is provided at a distance from the wiring conductor and the plating layer. It may be formed.

The light emitting element 3 is mounted on the main surface of the substrate 2. The light emitting element 3 is electrically connected to the plating layer adhered to the surface of the wiring conductor formed on the main surface of the substrate 2 through, for example, a brazing material or solder. The light emitting element 3 has a transparent base and an optical semiconductor layer formed on the transparent base. The translucent substrate may be any one capable of growing an optical semiconductor layer by using a chemical vapor deposition method such as a metal organic chemical vapor deposition method or a molecular beam epitaxial growth method. As a material used for the translucent substrate, for example, sapphire, gallium nitride, aluminum nitride, zinc oxide, zinc selenide, silicon carbide, silicone, zirconium diboride, or the like can be used. The thickness of the transparent substrate is, for example, 50 μm or more and 1000 μm or less.

The optical semiconductor layer is composed of a first semiconductor layer formed on the transparent substrate, a light emitting layer formed on the first semiconductor layer, and a second semiconductor layer formed on the light emitting layer. .. The first semiconductor layer, the light emitting layer and the second semiconductor layer are, for example, a group III nitride semiconductor, a group III-V semiconductor such as gallium phosphide or gallium arsenide, or a group III nitride such as gallium nitride, aluminum nitride or indium nitride. A semiconductor or the like can be used. The thickness of the first semiconductor layer is, for example, 1 μm or more and 5 μm or less, the thickness of the light emitting layer is, for example, 25 nm or more and 150 nm or less, and the thickness of the second semiconductor layer is, for example, 50 nm or more and 600 nm or less. Further, the light emitting element 3 thus configured can emit excitation light in a wavelength range of 280 nm to 450 nm, for example.

The frame 4 is made by mixing, for example, a ceramic material such as aluminum oxide, titanium oxide, zirconium oxide or yttrium oxide, or a porous material, or a powder made of a metal oxide such as aluminum oxide, titanium oxide, zirconium oxide or yttrium oxide. Made of resin material. The frame body 4 is connected to the main surface of the substrate 2 via, for example, resin, a brazing material, solder or the like. The frame body 4 is provided on the main surface of the substrate 2 so as to surround the light emitting element 3 at a distance from the light emitting element 3. Further, the frame body 4 is formed so that the inclined inner wall surface spreads outward as the distance from the main surface of the substrate 2 increases. Then, the inner wall surface of the frame body 4 functions as a reflection surface of the excitation light emitted from the light emitting element 3. When the inner wall surface of the frame body 4 has a circular shape in plan view, the light emitted from the light emitting element 3 can be uniformly reflected outward by the reflecting surface.

The inclined inner wall surface of the frame body 4 is made of, for example, a metal layer made of tungsten, molybdenum, manganese or the like on the inner peripheral surface of the frame body 4 made of a sintered material, and nickel or gold coating the metal layer. You may form a plating layer. This plating layer has a function of reflecting the light emitted from the light emitting element 3. The inclination angle of the inner wall surface of the frame body 4 is set to, for example, 55 degrees or more and 70 degrees or less with respect to the main surface of the substrate 2.

An inner space surrounded by the substrate 2 and the frame 4 is filled with a light-transmissive sealing member 5. The sealing member 5 seals the light emitting element 3 and extracts the light emitted from the inside of the light emitting element 3 to the outside. Further, it has a function of transmitting the light extracted to the outside of the light emitting element 3. The sealing member 5 is filled in an inner space surrounded by the substrate 2 and the frame body 4, leaving a part of the space surrounded by the frame body 4. For the sealing member 5, for example, a transparent insulating resin such as a silicone resin, an acrylic resin, or an epoxy resin or a transparent glass material is used. The refractive index of the sealing member 5 is set to, for example, 1.4 or more and 1.6 or less.

The wavelength conversion member 6 is provided along the upper surface of the sealing member 5 in the upper part of the inner space surrounded by the substrate 2 and the frame body 4. The wavelength conversion member 6 is formed so as to fit inside the frame body 4. The wavelength conversion member 6 has a function of converting the wavelength of light emitted from the light emitting element 3. That is, in the wavelength conversion member 6, the light emitted from the light emitting element 3 enters the inside through the sealing member 5, and the phosphor contained therein is excited by the light emitted from the light emitting element 3 to generate fluorescence. In addition to emitting fluorescence from the body, part of the light from the light emitting element 3 is transmitted and emitted. The wavelength conversion member 6 is made of, for example, a translucent insulating resin such as a fluororesin, a silicone resin, an acrylic resin or an epoxy resin, or a translucent glass material, and the phosphor is contained in the insulating resin or the glass material. It is contained. The phosphor is uniformly dispersed in the wavelength conversion member 6. The phosphor contained in the light emitting element 3 and the wavelength conversion member 6 is selected so that the emission spectrum of the light emitted from the light emitting device 1 has an emission spectrum as shown in FIG. The number of light emitting devices 1 mounted on the lighting device 10 may be one or more. Therefore, the emission spectrum described above may be emitted from a plurality of light emitting devices 1.

In the light emitting device 1 of the embodiment of the present invention, for example, the light emitting element 3 having the peak wavelength λ of 360 to 430 nm is used, and as the phosphor, for example, the fluorescence having the peak wavelength of 430 to 700 nm and emitting blue fluorescence is used. A body and a phosphor that emits blue-green fluorescence may be used. In addition to this, a phosphor that emits green fluorescence, a phosphor that emits red fluorescence, and a phosphor that emits fluorescence in the near infrared region may be further used. The light emitting element 3 may be a blue LED having a peak wavelength λ in blue (430 to 500 nm), a red LED, or an ultraviolet LED having a shorter wavelength.

Each phosphor example, phosphor exhibiting a blue _{color, BaMgAl 10 O 17: Eu,} (Sr, Ca, Ba) 10 (PO 4) 6 Cl 2: Eu, (Sr, Ba) 10 (PO 4) 6 Cl _2: Eu, phosphor exhibiting blue _{green, (Sr, Ba, Ca)} 5 (PO 4) 3 Cl: Eu, Sr 4 Al 14 O 25: is Eu. Phosphors exhibiting green are SrSi ₂ (O,Cl) ₂ N ₂ :Eu, (Sr,Ba,Mg) ₂ SiO ₄ :Eu ²⁺ , ZnS:Cu,Al, Zn ₂ SiO ₄ :Mn. The phosphors exhibiting a red color are Y ₂ O ₂ S:Eu, Y ₂ O ₃ :Eu, SrCaClAlSiN ₃ :Eu ²⁺ , CaAlSiN ₃ :Eu, and CaAlSi(ON) ₃ :Eu. The phosphor showing the near infrared region is 3Ga ₅ O ₁₂ :Cr.

<Configuration of lighting device>
As shown in FIGS. 9 to 11, the illumination device 10 according to the embodiment of the present invention includes the light emitting device 1 described above, the control unit 71, and the first sensor 91.

The control unit 71 is a unit that controls the emission spectrum of the light emitting device 1. For example, the intensity of light emitted from the light emitting device 1 can be adjusted. Further, when the light emitting device 1 has a plurality of light emitting elements 3, it is possible to adjust which voltage is applied to which light emitting element, how much voltage or current is applied to the circuit of the light emitting device 1. it can. At this time, which light emitting element is selected may be adjusted. Further, when there are a plurality of light emitting devices 1, it is possible to adjust which light emitting device emits light, which light emitting device has a higher light emission intensity, and the like. The control unit 71 also controls the above-described light emitting device 1 based on a signal or information received from the outside. The control unit 71 may include an arithmetic unit such as a CPU and a memory.

The first sensor 91 is a part that receives external information. The first sensor 91 may be equipped with a photodetector, a spectrum meter, or the like. The first sensor 91 converts the received external information into data and transmits it as the first external information to the main body of the lighting device 10. The first sensor 91 may be connected to the main body of the lighting device 10 by a wire, or may be independent of the main body of the lighting device 10 and may transmit signals or information (first external information) by wireless communication. .. The main body of the lighting device 10 refers to a light emitting portion surrounded by a housing 11 including the light emitting device 1. When the first sensor 91 transmits the first external information by wireless communication, it is possible to control the emission spectrum of the light emitting device based on the information farther from the lighting device. Further, a plurality of first sensors 91 may be connected to the main body of the lighting device.

In the lighting device 10, the emission spectrum emitted from the light emitting device 1 is controlled by the control unit 71 based on the first external information transmitted from the first sensor 91. Specifically, for example, when the first sensor 91 is installed outdoors and the light of the sunlight at 14:00 is received by the photodetector or the spectrum meter in the first sensor 91, the received information is the first external information. The control unit 71 controls the current or voltage applied to the light emitting device 1 so that the emission intensity and the spectrum of the light emitted from the light emitting device 1 become equivalent to that of sunlight at 14:00. Controls such as increasing the output. That is, it is possible to control which light emitting device is adjusted at what output in order to reproduce a specific region, sunlight at a specific time, and a specific color. For example, if there is a light emitting device that emits blue, red, green, and white light, respectively, by combining blue and white to emit light and adjusting the output, from light blue to dark light blue, and red You can reproduce light pink to deep pink by combining and white and making it emit light and adjusting the output. Accordingly, even if the light emitting device 1 is provided in the indoor space, the same lighting environment as in a specific outdoor can be reproduced in real time by using the lighting device 10.

Since the lighting device 10 according to the embodiment of the present invention includes the first sensor 91 and the control unit 71, the current or the voltage can be controlled based on the external information received by the first sensor 91. The emission spectrum and emission intensity of the light emitting device 1 can be adjusted.

Further, in the light emitting device 1 and the lighting device 10 including the same according to the embodiment of the present invention, the temperatures of the plurality of phosphors 60 fluctuate, and the output of the fluorescence emitted from each phosphor at the peak wavelength fluctuates. By doing so, it is possible to reduce variations in the color of the light emitted from the light emitting device 1. That is, even when the output of the fluorescence emitted from one of the plurality of phosphors 60 at the peak wavelength fluctuates, the light emitted from the light-emitting device 1 is emitted by the fluorescence emitted from the other phosphor. It increases the possibility that the color can be maintained at a predetermined light color. Therefore, the light emitting device 1 according to the embodiment of the present invention can reduce the color variation of the light emitted from the light emitting device 1 caused by the variation of the emission intensity at the peak wavelength emitted from the phosphor. it can.

The lighting device 10 according to the embodiment of the present invention may further include a storage unit 72 that stores external information as data. The storage unit 72 is a server that stores information about the spectrum and color of light at a specific place or time or the first external information from the first sensor 91 as storage information. At this time, the lighting device 10 can take out and utilize the accumulated external information from the storage unit 72. As a result, the light emitting device 1 can reproduce the light at a specific place or time by adjusting the emission spectrum and the emission intensity in the control unit 71 based on the external information accumulated in the storage unit 72. ..

The lighting device 10 according to the embodiment of the present invention may further include a second sensor 92 that receives information on an emission spectrum emitted from the light emitting device 1. As a result, the information on the light emitted from the light emitting device 1 can be constantly monitored. The light information is, for example, a light spectrum, ambient temperature, time, or the like. Further, the first sensor 91 and the second sensor 92 may be of the same type. Further, the light information received by the second sensor 92 is transmitted as the second external information, the second external information is compared with the stored information, and the light information (second external information) and the stored information are based on the comparison result. You may have the calculating part 73 which calculates so that they match.

The light reproduced based on the stored information is emitted from the light emitting device 1, and the emission spectrum (light information) of the light is received by the second sensor 92. The light information received by the second sensor 92 is converted into data, and the data is transmitted to the calculation unit 73 as second external information. The second sensor 92 may be connected to the main body of the lighting device 10 by wire, or may be independent of the main body of the lighting device 10 and may transmit signals or information (second external information) by wireless communication. .. When the second sensor 92 transmits the second external information by wireless communication, connection wiring with the lighting device main body is unnecessary. The calculation unit 73 compares and calculates so as to obtain the difference between the stored information and the second external information. Then, based on the calculation result, the control unit 71 controls the current and voltage applied to the light emitting device 1 so that the light emitting spectrum emitted from the light emitting device 1 matches the emission spectrum of the stored information. By using the second sensor 92, the information (emission spectrum) of the light emitted from the light emitting device 1 is always fed back, so that the light that matches the stored information can be reproduced. For example, even when the emission spectrum of the light emitting device 1 cannot be accurately reproduced based on the stored information due to the influence of temperature and humidity in the indoor environment, the second sensor 92 detects the emission spectrum to reproduce more accurately. The calculation unit 73 and the control unit 71 can make corrections so that they can be performed. Further, in the above-described embodiment, the example in which the second sensor is used has been shown, but the first sensor 91 may be used to receive and control the emission spectrum emitted from the light emitting device 1.

Further, it may further include a calculation unit 73 and a reception unit 81 that perform calculation so that the external information received by the first sensor 91 and the light information received by the second sensor 92 match. The external information received by the first sensor is converted into data and transmitted to the receiving unit 81 as the first external information. The light information received by the second sensor 92 is converted into data and transmitted to the receiving unit 81 as second external information. For example, the first sensor 91 is installed outdoors in a remote place. The second sensor 92 is installed so as to monitor the light of the light emitting device 1. By including the calculation unit 73, the first external information and the second external information are constantly compared and calculated, and even when there is a difference between the first external information and the second external information, the light emitting device. The emission spectrum of No. 1 can be corrected to be equivalent to the first external information. Thereby, the light emitting device 1 can more accurately reproduce the emission spectrum based on the first external information. Further, the emission spectrum of the light emitting device 1 can be immediately corrected even when the first external information changes. Thereby, the light of a specific remote place can be reproduced in real time in the indoor where the light emitting device 1 is located.

Furthermore, the light emitting device 1 according to the embodiment of the present invention can be adjusted so as to emit light having a high color rendering property, which is close to the spectrum of sunlight. That is, it is possible to perform adjustment so as to reduce the difference between the relative light intensity in the spectrum of sunlight and the relative light intensity in the emission spectrum of the light emitting device 1 according to the embodiment of the present invention, and to provide the lighting device 10 close to sunlight. Can be made.

FIG. 5 shows an example of an emission spectrum including a plurality of phosphors 60 used in the light emitting device 1 of this embodiment. In the emission spectrum of FIG. 5, it is a spectrum represented by relative light intensity with the highest emission intensity being 1. The emission spectrum shows the relative light intensity based on the actually measured values.

FIG. 6 is an external perspective view of a lighting device including the light emitting device according to the present embodiment, and FIG. 7 is an exploded perspective view of the lighting device shown in FIG. FIG. 8 is a perspective view showing a state where the translucent substrate is removed from the housing of the lighting device shown in FIG. 7. The lighting device 10 includes a plurality of light emitting devices having the light emitting element 3. The light emitted from the plurality of light emitting devices has a first peak wavelength λ1 in the wavelength range of 360 to 430 nm and a plurality of peak wavelengths λx in the wavelength range of 360 to 780 nm.

The lighting device 10 includes, for example, a long casing 11 that is open upward, a plurality of light emitting devices 1 arranged in a line along the longitudinal direction inside the casing 11, and a plurality of light emitting devices 1 are mounted. And a long transparent substrate 13 that is supported by the housing 11 and closes the opening of the housing 11.

The housing 11 has, for example, a function of holding the transparent substrate 13 and a function of dissipating heat generated by the light emitting device 1 to the outside. The housing 11 is made of, for example, metal such as aluminum, copper or stainless steel, plastic, resin or the like. The housing 11 has a bottom portion 21a extending in the longitudinal direction and a pair of support portions 21b extending in the longitudinal direction, which are provided upright from both ends of the bottom portion 21a in the width direction, and are open at both upper and longitudinal sides. It is composed of a long body portion 21 and two lid portions 22 that respectively close the openings on one side and the other side in the longitudinal direction of the body portion 21. In the upper part of the inside of the housing 11 of each support part 21b, a holding part is provided in which recesses for holding the translucent substrate 13 are formed so as to face each other along the longitudinal direction. The length of the housing 11 in the longitudinal direction is set to, for example, 100 mm or more and 2000 mm or less.

The wiring board 12 is fixed to the bottom surface inside the housing 11. As the wiring board 12, for example, a printed board such as a rigid board, a flexible board, or a rigid flexible board is used. The wiring pattern of the wiring board 12 and the wiring pattern of the board 2 in the light emitting device 1 are electrically connected via solder or a conductive adhesive. Then, the signal from the wiring board 12 is transmitted to the light emitting element 3 through the board 2, and the light emitting element 3 emits light. Electric power is supplied to the wiring board 12 from a power supply provided outside through wiring.

The transparent substrate 13 is made of a material that allows the light emitted from the light emitting device 1 to pass therethrough, and is made of a transparent material such as acrylic resin or glass. The translucent substrate 13 is a rectangular plate body and has a length in the longitudinal direction set to, for example, 98 mm or more and 1998 mm or less. The translucent substrate 13 is inserted into the recess formed in each of the above-mentioned support portions 21b from the opening on one side or the other side in the longitudinal direction of the main body portion 21 and is slid along the longitudinal direction, so that a plurality of The light emitting device 1 is supported by the pair of supporting portions 21b. Then, the lighting device 10 is configured by closing the openings on one side and the other side in the longitudinal direction of the main body 21 with the lid 22.

The lighting device 10 is a linear light emitting device in which the plurality of light emitting devices 1 are linearly arranged, but is not limited to this, and a surface in which the plurality of light emitting devices 1 are arranged in a matrix or a houndstooth check pattern. It may be a light emitting lighting device.

In the light emitting device 1 according to the embodiment of the present invention, as the phosphor contained in one wavelength conversion member 6, as described above, a phosphor emitting blue fluorescence, a phosphor emitting blue green fluorescence, and green. The fluorescent substance that emits the fluorescent light, the fluorescent substance that emits the red fluorescent light, and the fluorescent substance that emits the fluorescent light in the near-infrared region are included, but the present invention is not limited to this. A wavelength conversion member may be provided. When two types of wavelength conversion members are provided, the first wavelength conversion member is used, and different phosphors are dispersed in the second wavelength conversion member, or the phosphors are dispersed in different combinations to form one light emitting device. It is also possible to provide these two wavelength conversion members and mix the lights emitted through the respective wavelength conversion members. By doing so, the color rendering of the emitted light can be easily controlled.

The emission spectrum of the manufactured light emitting device 1 is the emission spectrum shown in FIG.

<Structure of lighting system>
The lighting system 100 according to the embodiment of the present invention includes the light emitting device 1, a first sensor 91, a reception unit 81, a second sensor 92, a calculation unit 73, and a control unit 71. Note that, in the above-described lighting device 10, each device installed in a position apart from the main body including the light emitting device 1 was incorporated into the device itself, but in the lighting system 100, the first sensor 91 and the second sensor 92 are incorporated. It suffices that the above components are provided outside the lighting device 10 and interlock with each other. For example, it is an illumination system in which the first sensor is a personal portable device to which an attached spectrum meter or the like is connected, and the emission spectrum acquired by the spectrum meter can be transmitted to the illumination device 10 as data. Further, regarding the same configuration as the illumination device 10, the illumination system 100 also exhibits similar behavior. Therefore, the configuration example of the illumination system 100 according to the embodiment of the present invention is as shown in FIGS. 9 and 10, like the illumination device 10 described above.

The illumination system 100 according to the embodiment of the present invention receives external information and light information by the first sensor 91 and the second sensor 92, respectively. For example, the first sensor 91 is located at a remote location and transmits information on the remote location as first external information, and the second sensor 92 is installed near the light emitting device 1 and information on light emitted from the light emitting device 1. Is received and is transmitted to the receiving unit 81 as the second external information. In the illumination system 100, the receiving unit 81 receives the first external information and the second external information, and the arithmetic unit 73 compares the two external information and performs arithmetic processing. Similar to the illumination device 10 described above, the control unit 71 adjusts the emission spectrum and the emission intensity of the light emitting device 1 based on this arithmetic processing. Accordingly, the illumination system 100 can accurately reproduce the light of the specific place where the first sensor 91 is located in real time.

The lighting system 100 of the present invention may include the storage unit 72. The storage unit 72 holds the stored information and may be arithmetically processed so that the second external information becomes the same as the stored information. Further, arbitrary first external information or second external information may be added or accumulated as the storage information.

Further, the first sensor 91 may be located outdoors. At this time, the first sensor 91 may be a sensor that detects information such as outdoor weather, temperature, and a spectrum of light. As a result, the emission spectrum of light in the indoor space where the main body of the illumination system 100 is provided can be made equal to that in the outdoor environment. Further, the first sensor 91 may be located in the sea or underwater. At this time, information such as the sunlight spectrum in the water and the water temperature can be detected. As a result, the sunlight spectrum in water can be reproduced in real time, which is useful for applications such as an illumination system for growing aquatic organisms.

It should be noted that the present invention is not limited to the above-described example of the embodiment, and various modifications such as numerical values are possible. Various combinations of the characteristic portions in the present embodiment are not limited to the examples of the above-described embodiment.

1 Light-Emitting Device 10 Illuminating Device 100 Illuminating System 11 Housing 12 Wiring Substrate 13 Translucent Substrate 2 Substrate 21 Main Body 21a Bottom 21b Supporting Part 22 Lid 3 Light-Emitting Element 4 Frame 5 Sealing Member 6 Wavelength Converting Member 60 Phosphor 71 control unit 72 storage unit 73 arithmetic unit 81 receiving unit 91 first sensor 92 second sensor λ peak wavelength

Claims (11)

A light emitting device,
A first sensor for receiving external information and transmitting first external information;
An illumination device, comprising: a control unit that controls a current or a voltage applied to the light emitting device based on the first external information from the first sensor. The lighting device according to claim 1, further comprising a storage unit that stores external information and/or the first external information as storage information. The first external information transmitted from the first sensor,
The storage unit further comprises: a calculation unit that compares the stored information accumulated in the storage unit with each other and performs a calculation based on a comparison result so as to match the first external information with the stored information. Item 2. The lighting device according to item 2. A light emitting device,
A first sensor for receiving external information and transmitting it as first external information;
A receiver for receiving the first external information,
A second sensor for receiving information of light emitted from the light emitting device and transmitting the information to the receiving unit as second external information;
An arithmetic unit that performs arithmetic processing for comparing and/or arithmetically operating the first external information and the second external information;
A lighting unit, comprising: a control unit that is electrically connected to the calculation unit and that controls a current or a voltage applied to the light emitting device based on the calculation process. The illumination device according to claim 1, wherein the light emitted from the light emitting device has a peak wavelength in a wavelength range of 360 to 430 nm. A light emitting device,
A first sensor for transmitting first external information;
A receiver for wirelessly receiving the first external information from the first sensor,
A second sensor for receiving information on light emitted from the light emitting device and wirelessly transmitting second external information to the receiving unit;
A calculation unit that is electrically connected to the control unit and performs calculation processing for comparing and/or calculating the first external information and the second external information;
An illumination system comprising a control unit that controls a current or a voltage applied to the light emitting device based on the arithmetic processing. The lighting system according to claim 6, wherein the second external information is arithmetically processed to be the same as the first external information. The illumination system according to claim 6, further comprising: a storage unit that stores external information, the first external information, and/or the second external information as storage information. The lighting system according to claim 8, wherein the second external information is arithmetically processed so as to be the same as the stored information. The lighting system according to claim 6, wherein the first sensor is installed outdoors. The lighting system according to claim 6, wherein the first sensor is installed in the sea or underwater.