WO2023238959A1 - Composite structure of illumination device and wireless communication device, placement method for illumination device and wireless communication device, and illumination device-equipped wireless communication device placed by said placement method - Google Patents

Composite structure of illumination device and wireless communication device, placement method for illumination device and wireless communication device, and illumination device-equipped wireless communication device placed by said placement method Download PDF

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Publication number
WO2023238959A1
WO2023238959A1 PCT/JP2023/021801 JP2023021801W WO2023238959A1 WO 2023238959 A1 WO2023238959 A1 WO 2023238959A1 JP 2023021801 W JP2023021801 W JP 2023021801W WO 2023238959 A1 WO2023238959 A1 WO 2023238959A1
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WIPO (PCT)
Prior art keywords
light
wireless communication
communication device
micro
resin sheet
Prior art date
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PCT/JP2023/021801
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French (fr)
Japanese (ja)
Inventor
俊司 山本
泰樹 木村
功一 河井
英史 小澤
聡 小澤
Original Assignee
古河電気工業株式会社
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Application filed by 古河電気工業株式会社 filed Critical 古河電気工業株式会社
Publication of WO2023238959A1 publication Critical patent/WO2023238959A1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00Globes; Bowls; Cover glasses
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00Globes; Bowls; Cover glasses
    • F21V3/04Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/06Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00Globes; Bowls; Cover glasses
    • F21V3/04Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/10Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00Structural combinations of lighting devices with other articles, not otherwise provided for
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/22Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/09Arrangements for giving variable traffic instructions
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00Illuminated signs; Luminous advertising
    • G09F13/04Signs, boards or panels, illuminated from behind the insignia
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/02Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00Combination of light sources
    • F21Y2113/10Combination of light sources of different colours
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Definitions

  • the present invention relates to a composite structure in which an LED lighting device and a wireless communication device are integrated, a method of arranging the lighting device and the wireless communication device, and a wireless communication device with a lighting device arranged using the arrangement method.
  • Patent Document 1 discloses a base station device in which a base station unit, a guide light unit, and a common power supply unit are housed and integrated in a housing.
  • the base station device of Patent Document 1 includes a base station unit that wirelessly connects with a mobile terminal and relays communication with a partner device of the mobile terminal, and a guide light unit that receives power supply and performs a predetermined operation. It has a common power supply unit that supplies power to the base station unit and the guide light unit, and a casing that is fixedly installed indoors or outdoors.
  • a light emitting panel section and a resin display panel section are arranged as a lighting device in front of an electrical equipment unit.
  • This light emitting panel has a light guide plate with an LED light source arranged thereon or a planar EL element arranged thereon, and a lighting device is arranged inside the same housing in front of the wireless communication device. According to Patent Document 1, it is possible to provide a base station device that is small, can be manufactured at low cost, can avoid radio wave interference, and can operate even in the event of a disaster.
  • Patent Document 2 proposes a bus stop sign safety system that provides a bus stop sign equipped with a multipurpose function as a two-way communication device for familiar information.
  • a bidirectional communication function is installed at a bus stop, adding a display device for familiar information and advertisements using text and images.
  • the bus stop sign safety system disclosed in Patent Document 2 is equipped with solar cells and batteries, and can provide various information such as emergency disaster information notification via wireless LAN even in the event of a power outage in the event of a disaster.
  • bus stop sign safety system of Patent Document 2 various advisories and warnings such as disaster information, local government public relations, emergency earthquake early warnings, news, weather information, heavy rain information, pollen information, and wave warnings, or bicycle and horse racing It is possible to display and transmit various types of latest information such as breaking news on public race facilities such as boat races, information on events and information in the surrounding area, and other gourmet information for housewives, as well as advertisements.
  • the bus stop sign safety system of Patent Document 2 can also be equipped with communication means such as an emergency red revolving lamp, a siren, and a speaker, and it is possible to construct a network information system using the bus stop sign.
  • Patent Document 3 describes a self-contained lighting system that generates all the electricity it consumes in-house using renewable energy, supplies the generated electricity to light and drive equipment, and does not emit CO2 .
  • a device and a wireless communication device are proposed.
  • Patent Document 4 proposes an illuminated device-built-in antenna in which the device-built-in antenna is arranged on an antenna substrate. For example, it can be applied to building signs, convenience stores, drug stores, fixed parking lots, stations, post offices, etc., as well as wall-mounted signs, protruding signs, outdoor signs, stand signs, pole signs, etc. Signboards with built-in device antennas have been proposed.
  • the signboard of Patent Document 4 includes a horizontally long rectangular substrate, and on the surface of the substrate, a plurality of light emitting elements are provided in two rows approximately parallel to the long sides of the substrate at predetermined intervals from the center line.
  • a device built-in antenna for communication is arranged approximately in the center of the substrate, and an LED light emitting element as a lighting device and a device built-in antenna are arranged on the same substrate at different positions where they do not interfere with each other.
  • a switching means switches between direct connection and connection via a delay line. Since the phase of the feeding signal supplied to the first to fourth elements is determined in accordance with the switching of the switching means, the direction of the antenna beam of the device built-in antenna is determined by the sheet. That is, by bonding a predetermined sheet to the antenna substrate, the direction of the antenna beam can be set.
  • Patent Document 5 proposes a position measurement system that uses a visible light communication system and can be easily put into practical use.
  • the position measurement system of Patent Document 5 can measure the current position of a vehicle using a visible light communication beacon that transmits position information as a visible light signal and image information captured by one camera.
  • the visible light communication beacon in Patent Document 5 consists of a road lighting lamp and a visible light communication device provided on a road lighting pole.
  • the vehicle has a vehicle position measuring device that is equipped with one camera and that demodulates the position information of the visible light communication beacon from the visible light signal to calculate the current position.
  • an outdoor road light has both a lighting device and a communication device, but the lighting device and the communication device are provided at different positions.
  • the radio waves for wireless communication may be obstructed by the lighting device.
  • absorption when radio waves are transmitted through a substance tends to increase as the dielectric constant of the substance increases.
  • substrates used in lighting devices usually have a high relative permittivity, and when radio waves are transmitted through the substrate, they may be absorbed, resulting in a large transmission loss.
  • a reflector is usually used to make the light extracted from the lighting device uniform.
  • a reflective plate made of metal has a high dielectric constant as described above, and there is a possibility that the transmission loss of radio waves becomes large.
  • the reflector is not properly placed, it will cause uneven brightness due to direct light from the light source.
  • Patent Document 5 if the lighting device and the wireless communication device are placed in different positions, it is possible to create a layout in which the radio waves from the wireless communication device are not affected by the lighting device. . However, in this case, it is difficult to downsize the device because the lighting device and the wireless communication device need to be placed separately.
  • the present invention has been made in view of such problems, and provides a composite structure of a lighting device and a wireless communication device, and a lighting device that can extract light of uniform brightness with little loss of radio waves from a wireless communication device.
  • An object of the present invention is to provide a method for arranging a wireless communication device, and a wireless communication device with a lighting device arranged using the method.
  • the present invention provides a composite structure of a lighting device and a wireless communication device, which are arranged in front of a wireless communication device, using a micro-foamed resin sheet, the lighting device having an LED light source. and a substrate supporting the LED light source, a light transmitting member, a frame member supporting an outer peripheral portion of the light transmitting member, and a light diffusing and reflecting microfoamed resin sheet, and supported by the frame member.
  • the wireless communication device is placed facing the opposite direction, the wireless communication device is placed on the back side of the light reflecting surface of the micro foam resin sheet, and the micro foam resin sheet placed in front of the wireless communication device is placed on the back side of the light reflecting surface of the micro foam resin sheet, and the micro foam resin sheet is placed in front of the wireless communication device.
  • the micro-foamed resin sheet is placed in contact with the radio wave emitting surface of the wireless communication device as part of the casing of the wireless communication device, or is placed at a predetermined distance from the radio wave emitting surface of the wireless communication device, and the micro foam resin sheet
  • the material is made of a material that has excellent diffuse reflection properties, has a lower relative permittivity than the substrate and the light transmitting member, and has excellent radio wave transmittance.
  • the substrate is formed at a necessary position on the light guide space side of the frame member, on the light guide space side of the outer periphery of the light transmitting member, or formed on the light guide space side spanning both. .
  • Only the light transmitting member and the micro foam resin sheet are arranged in a central part of the lighting device corresponding to a front radio wave emitting surface of the wireless communication device so as not to obstruct transmission of radio waves from the wireless communication device. and the LED light source, the board, the frame member, and the casing of the lighting device are arranged on the outer periphery of the lighting device, without the LED light source, the board, the frame member, and the casing being arranged. It is possible to have a composite structure of the lighting device according to claim 1 and the wireless communication device.
  • the micro-foamed resin sheet disposed in front of the wireless communication device is a micro-foamed resin sheet with an average cell diameter of 0.2 to 10 ⁇ m, and the micro-foamed resin sheet is a micro-foamed resin sheet that has an average cell diameter of 0.2 to 10 ⁇ m. If the diffuse reflectance of the barium sulfate standard plate is 100%, the micro-foamed resin sheet has a diffuse reflectance of 95% or more relative to the barium sulfate standard plate, and is a light reflecting plate that can also serve as a casing of the lighting device.
  • the micro-foamed resin sheet may be placed in contact with the radio wave emitting surface of the wireless communication device, or may be placed at a predetermined distance from the radio wave emitting surface of the wireless communication device.
  • the dielectric constant of the foamed resin sheet may be measured at a measurement frequency of 2 GHz using a method specified in ASTM D2520 and JIS C2565, and the value may be 1.8 or less. Further, when the micro foam resin sheet and the wireless communication device are separated by a predetermined distance, the distance is preferably 5 mm or less.
  • the micro-foamed resin sheet placed in front of the wireless communication device has an average cell diameter of 0.2 to 10 ⁇ m, so it not only has excellent diffuse reflection properties and dielectric properties, but also has low radio wave transmission loss. It may also be a composite structure of a lighting device and a wireless communication device, which is characterized by low scattering loss.
  • the micro-foamed resin sheet serves as a light reflection plate for the lighting device to realize an indirect lighting device, and also prevents the transmission of radio waves emitted from the wireless communication device. Moreover, it has the effect of protecting the surface of the wireless communication device, and furthermore, by arranging the lighting device in front of the wireless communication device, the combined structure of the indirect lighting device and the wireless communication device can be miniaturized.
  • the light transmitting member is made of a light transmitting transparent resin such as PC resin, ABS resin, PET resin, vinyl chloride resin, acrylic resin, polystyrene resin, COP resin, or COC resin, or transparent glass, or the transparent resin.
  • a semi-transparent resin to which a pigment has been added a semi-transparent resin made translucent by roughening the surface of the transparent resin on the light extraction part side or forming a fine uneven structure, a surface of the transparent resin or the transparent glass. It may be either a translucent laminate with a translucent resin film attached, or translucent colored glass.
  • the resin constituting the light transmitting member includes COP resin, COC resin, and the like.
  • COP resin is known as a transparent general-purpose engineering plastic with excellent transparency, heat resistance, and water absorption, and is used for optical, biological, medical, and automotive applications. Because of its excellent properties, it is used for high-frequency connectors and high-frequency antenna substrate materials.
  • COC resin is a product obtained by copolymerizing COP resin with ethylene resin, rubber resin, etc., and is used to adjust the mechanical properties such as heat resistance and impact properties of COP resin.
  • the resins that form the light guide plate compared to PC resin, ABS resin, PET resin, vinyl chloride resin, acrylic resin, polystyrene resin, etc., the light guide plate is more transparent than other resins, considering the transmittance of radio waves from wireless communication devices.
  • COP resins and COC resins that have low dielectric constant and dielectric loss tangent.
  • a part of the front or back surface of the light transmitting member is covered with a thin film-like coating member made of colored paint, metal vapor deposition, or metal plating, or the front or rear surface of the light transmitting member, or an abbreviation of the light transmitting member.
  • a colored resin having a predetermined thickness that is non-light-transmitting is placed on the same plane or inside the light-transmitting member, or a colored resin that is the same as the light-transmitting member is placed in place of a part of the light-transmitting member. Colored resins having different thicknesses or different thicknesses may be arranged.
  • the covering member is used as a light shielding member that blocks light, and has the same meaning as a light shielding member.
  • the covering member When the covering member is provided at a predetermined position of the light transmitting member and the covering member is exposed on the back surface of the light transmitting member, a material having the same size as the covering member and the same size as the covering member is directly placed on the back surface of the covering member.
  • the micro foam resin sheet When the micro foam resin sheet is attached and the covering member is not exposed on the back surface of the light transmitting member, the position of the inner circumferential surface of the light transmitting member corresponding to the covering member on the back surface of the light transmitting member.
  • micro-foamed resin sheet which has a similar shape and a slightly smaller size to the covering member, almost all positions of the light-transmitting member on the light-guiding space side, except for the light-transmitting part, are covered with the micro-foamed resin. It is also possible to have a composite structure of a lighting device and a wireless communication device covered with a sheet. In this case, it is desirable to have a structure in which the covering member is provided on the inner surface of the light-transmitting member and the covering member is directly covered with the micro-foamed resin sheet.
  • a part of the light transmitting member is coated with the coating member selected from colored paint, metal vapor deposition, metal plating, or a non-light transmitting colored resin having a predetermined thickness, or one of the light transmitting members
  • the coating member selected from colored paint, metal vapor deposition, metal plating, or a non-light transmitting colored resin having a predetermined thickness, or one of the light transmitting members
  • a non-light transmitting colored resin having a predetermined thickness is disposed as a covering member in place of the light transmitting member in the light transmitting portion or the light transmitting member where the light transmitting member is not covered with the covering member.
  • Light may be extracted from a light transmitting portion in which colored resin is not disposed.
  • the shape and thickness of the coated light-transmitting member can be changed as desired by changing the arrangement, shape, and thickness of the covering member. It can be designed to change to In addition, by continuously changing the thickness of the covering member or the light transmitting member on the light transmitting portion side, it is possible to give a three-dimensional effect to the shape of the light extraction portion of the lighting device and improve the design. I can do it.
  • composite molding such as injection molding may be used.
  • the covering member is formed into a thin film using colored paint, metal vapor deposition, or metal plating, a light transmitting member having a thin film-like texture can be obtained.
  • the covering member When the covering member is provided at a predetermined position of the light transmitting member and the covering member is formed to be exposed on the back surface of the light transmitting member, the same material as the covering member is directly applied to the back surface of the covering member.
  • the covering member When the micro foamed resin sheet of the same size is attached and the covering member is not exposed on the back surface of the light transmitting member, the covering member is placed on the back surface of the light transmitting member at a position corresponding to the covering member.
  • the micro-foamed resin sheet having a similar shape and slightly smaller size or the same size as the covering member may be attached.
  • the LED light source arranged on the substrate is an RGB light source, a one-chip LED light source whose emission color can be switched to RGB, a white LED light source, a daylight LED light source, a white LED light source using a phosphor, white or daylight color. It may be one of the following LED array light sources or a combination of these light sources.
  • the light transmitting portion is divided into an outer circumferential side and an inner circumferential side by the covering member provided on the light transmitting member, and indirect light having approximately the same brightness is extracted from the light transmitting portion on the outer circumferential side and the inner circumferential side. Good too.
  • the light transmitting member may have a flat plate shape or a curved surface having an uneven structure. Even if the shape of the light-transmitting part side of the light-guiding space is formed into a flat plate shape or a curved surface having an uneven structure, the reflected light is diffused and multiple-reflected within the light-guiding space, so that the illumination The light extracted from the device can be only substantially uniform indirect light.
  • the lighting device is an outdoor lighting device
  • the wireless communication device is a wireless communication device that is installed on a park, a road, a wall or a rooftop of a building, and communicates with pedestrians and vehicles running on the road. There may be.
  • the wireless communication device may be a wireless transmitter used in 5G communication, and the lighting device may be an advertising electronic signboard lighting device or a guidance electronic signboard device.
  • the lighting device may be a lighting device mounted on a moving body, and the wireless communication device may be a millimeter wave radar transmitter.
  • the above-mentioned moving object refers to an artificial means of transportation that has the ability to move on its own, and for example, the purpose of use of this lighting device is to monitor the surrounding area for detecting obstacles for trains, drones, and robots. It may also be a forward monitoring radar.
  • the micro-foamed resin sheet has a diffuse reflectance of 95% or more with respect to the barium sulfate standard plate, assuming that the diffuse reflectance of the barium sulfate standard plate in the visible light band of wavelengths from 450 to 650 nm is 100%. Yes, it may be a PET resin sheet or a PC resin sheet in which the radio wave attenuation rate of the micro-foamed resin sheet is within the range of 0 to -0.15 dB relative to the radio wave attenuation rate due to radio wave absorption by air in the wavelength band of 70 to 100 GHz. .
  • a second invention is a method for arranging a lighting device and a wireless communication device in a composite structure of a lighting device and a wireless communication device, in which the lighting device is placed in front of a wireless communication device using a micro-foamed resin sheet,
  • the lighting device includes an LED light source, a substrate that supports the LED light source, a light transmitting member, a frame member that supports the outer periphery of the light transmitting member, and a light diffusing and reflecting microfoamed resin sheet,
  • the micro-foamed resin sheet is formed so that the cross-sectional shape of the micro-foamed resin sheet has a concave shape so that the light emitted from the light emitting surface of the LED light source is reflected by the micro-foamed resin sheet.
  • the light emitting surface of the LED light source is arranged to face the micro foam resin sheet in a direction opposite to the light transmitting member
  • the wireless communication device is arranged on the back side of the light-reflecting surface of the micro-foamed resin sheet, and the micro-foamed resin sheet arranged in front of the wireless communication device serves as a part of the casing of the lighting device.
  • the light emitting surface is arranged so as to be in contact with the radio wave emitting surface of the communication device, or is arranged at a predetermined distance from the radio wave emitting surface of the wireless communication device, and the light beam is disposed in front of the radio wave emitting surface in front of the wireless communication device.
  • Arrangement of a lighting device and a wireless communication device characterized in that a material made of a micro-foamed resin sheet, which has excellent radio wave transparency and has a relative permittivity of 1.8 or less compared to the light-transmitting member, is used as a light reflecting plate. It can also be a method.
  • the micro-foamed resin sheet is formed into a concave shape by heat molding, and the cross-sectional shape is at the center of the concave shape.
  • the molded article may be formed into a substantially U-shape, an inverted trapezoid shape, or a bowl shape, including a flat portion.
  • the shape of the molded body of the micro-foamed resin sheet as long as it is formed in a concave shape as a whole, it may include a protrusion in a part.
  • the micro-foamed resin sheet acts as a reflector and provides diffuse reflection properties to the lighting device, providing indirect illumination.At the same time, the micro-foamed resin sheet also serves as a casing, allowing for additional lighting. It becomes unnecessary to provide a housing.
  • the method of arranging the lighting device and the wireless communication device in the composite structure of the lighting device and the wireless communication device of the third invention by arranging the members in the composite structure of the lighting device and the wireless communication device, the diffuse reflection property can be improved. It is possible to obtain a wireless communication device with an illumination device that is excellent in transmission loss and scattering loss of radio waves.
  • the micro-foamed resin sheet can provide a protective effect of protecting the surface of the wireless communication device.
  • the LED light source is arranged on the inner peripheral surface of the outer peripheral side of the molded body of the micro-foamed resin sheet, and it is also possible to arrange the LED light source so that its light emitting surface faces the inner peripheral surface of the opposite outer peripheral side of the molded body. be.
  • the micro-foamed resin sheet is preferably formed into a cylindrical shape, and the LED light sources are preferably attached to the inner peripheral surface of the circumferential surface of the cylinder so as to face each other.
  • the light guide space is formed using a light-reflective micro-foamed resin sheet, and the light from the LED light source is multiplexed and diffusely reflected by the micro-foamed resin sheet within the light guide space.
  • the brightness of light extracted from the transparent member can be made uniform.
  • a board with high radio wave absorption, an LED light source, etc. are placed around the outer periphery of the light guide space, the light from the LED light source and the radio waves from the wireless communication device are not blocked by the board, etc., and light reflection is prevented. There will be no interference or interference with radio waves emitted from wireless communication devices.
  • the radio waves emitted from the wireless communication device need to pass through a light-reflective micro-foamed resin sheet, but the dielectric constant of the micro-foamed resin sheet Since the transmission loss is low, there is little transmission loss of radio waves when they pass through the micro-foamed resin sheet. Furthermore, since the lighting device is placed in front of the wireless communication device, it is possible to downsize the combined structure of the lighting device and the wireless communication device.
  • the micro-foamed resin sheet that forms the light guide space also serves as a part of the casing of the lighting device, there is no need to provide a separate casing for the lighting device even if the lighting device is placed in front of the wireless communication device. do not have. Further, since a separate casing is not provided for the lighting device disposed in front of the wireless communication device, absorption and reflection loss of radio waves due to the casing of the lighting device can be prevented.
  • the foam may be placed in contact with the surface of the wireless communication device, or if it is placed at a distance of 5 mm or less from the surface of the wireless communication device, the foam may
  • the micro-foamed resin sheet can protect the surface of the wireless communication device, and has the effect of protecting the surface of the wireless communication device.
  • the dielectric constant of the micro-foamed resin sheet is 1.8 or less, transmission loss of radio waves when the radio waves are transmitted through the micro-foamed resin sheet can be suppressed more reliably.
  • the dielectric constant of a normal transparent resin exceeds 2.0, the dielectric constant of a micro-foamed resin sheet is low, so there is little loss such as reflection, absorption, and scattering when transmitting radio waves.
  • the dielectric constant of the micro foamed resin sheet is preferably 1.50 or less.
  • the light-transmitting member not only a transparent light-transmitting member but also a translucent light-transmitting member or a translucent laminate in which a translucent resin film is attached to the surface of a transparent resin or transparent glass can be used. . By doing so, it becomes possible to express colors with a more complex and luxurious feel. Although both glass and resin can be used as the light transmitting member, it is generally preferable to use resin rather than glass in terms of lowering the dielectric constant.
  • the surface of the light transmitting member is described as two-dimensional, it can be formed into a three-dimensional shape by injection molding or the like having an uneven structure.
  • the diffuse reflection properties in the light guide space can be further improved. Therefore, the brightness of the light extracted from the light extraction section can be improved.
  • the micro-foamed resin sheet is pasted in a position where no covering member is formed, the micro-foamed resin sheet will be directly visible from the outside of the light-transmitting member, reducing the design. The micro-foamed resin sheet is not visible from the outside of the transparent member, and the design can be improved.
  • LED light sources it is possible to switch between different colors of light or turn on different colors of light at the same time. Therefore, color toning can be performed by switching the emitted light color or by additively mixing different colors. Further, by arranging multiple rows of LED light sources such as LED array light sources, it is possible to increase the size of the lighting device.
  • the light transmitting member is formed into a flat plate shape or a curved surface having an uneven structure, and the light guiding space is Even if the shape of the light transmitting part is formed into a flat plate or a curved surface having an uneven structure, the reflected light is diffused and multiple reflected within the light guiding space, so that the light taken out from the lighting device is almost uniformly indirect. It can be only light. Therefore, the glare caused by direct light can be reduced.
  • indirect light can be emitted with approximately the same brightness from the light transmitting part on the outer circumferential side and the inner circumferential side of the covering member. It can be taken out.
  • a large electronic signboard or the like is provided with a logo mark that is divided into an inner circumferential side and an outer circumferential side, light of equal brightness can be extracted from both the inner circumferential side and the outer circumferential side of the logo mark.
  • a collective light source in which LED light sources are arranged in a grid, houndstooth, or array on a board, and a plurality of wireless communication devices are arranged adjacent to each other. It may also be placed.
  • a wireless transmitter By attaching a wireless transmitter to an outdoor lighting device and installing it in parks, roads, walls or rooftops of buildings, it is a wireless communication device suitable for communicating with pedestrians and cars. Good too. For example, if a wireless transmitter is attached to an outdoor lighting device and the wireless transmitter is used to communicate with pedestrians and cars, there will be no obstacles between pedestrians and cars, so pedestrians and other people can It is suitable for communicating with people in the street and cars driving on the road.
  • wireless communication equipment used in 5G communication requires the construction of small cells to stabilize communication, and is usually installed on the roof or wall of a building, but lighting equipment for electronic billboards for advertising By applying it to such places, there are fewer restrictions on the installation location, and it is easy to secure the installation location.
  • a wireless communication device when attached to a moving object, it can be a composite structure of a wireless communication device for detecting obstacles and a lighting device to ensure the safety of moving objects such as trains, drones, and robots.
  • the wireless communication device for a mobile object can have a composite structure of a peripheral monitoring or forward monitoring radar and a lighting device.
  • the rate of change in the radio wave attenuation rate of the micro-foamed resin sheet with respect to the radio wave attenuation rate due to radio wave absorption in the air in the wavelength band of 70 to 100 GHz is within the range of 0 to -0.15 dB, and as described above, It is possible to more reliably suppress the absorption of radio waves by the micro-foamed resin sheet placed in front of the wireless communication device.
  • a composite structure of a lighting device and a wireless communication device that can extract light of uniform brightness with little loss of radio waves from a wireless communication device, a method of arranging the lighting device and a wireless communication device, and the arrangement.
  • a wireless communication device with a lighting device arranged in a method can be provided.
  • FIG. 2 is a plan view showing the composite structure 1.
  • FIG. FIG. 2 is a sectional view taken along line AA in FIG. 1.
  • FIG. 1 is a plan view showing a composite structure 1 of a lighting device and a wireless communication device
  • FIG. 2A is a sectional view taken along the line AA in FIG. 1
  • FIG. 2B is a sectional view taken along the line BB in FIG. . Note that in the following description, illustrations of wiring and the like will be omitted.
  • the composite structure 1 is a composite structure in which the lighting device 3 and the wireless communication device 17 are integrated.
  • the lighting device 3 mainly includes an LED light source 13, a substrate 11 that supports the LED light source 13, a light transmitting member 7, a frame member 5 that supports the outer periphery of the light transmitting member, and a light diffusing and reflecting micro-foamed member. It is composed of a resin sheet 15 and the like.
  • the lighting device 3 and the wireless communication device 17 are integrated and combined, but even if they are not integrated, the lighting device 3 and the wireless communication device 17 may be placed in contact with each other. , and may be arranged separately within a predetermined distance.
  • contour shape of the composite structure 1 in plan view may be approximately circular, approximately elliptical, approximately oval, approximately triangular, approximately rectangular, approximately polygonal, approximately H-shaped, etc. of the light guide space described later. It may have any shape as long as it does not impair the diffuse reflectance. In particular, in the case of a substantially polygonal shape, an even-numbered polygon having major and minor axes is desirable from the viewpoint of design.
  • the LED light sources 13 are arranged all around the substrate 11 arranged around the entire circumference.
  • the LED light source 13 may be arranged on a part or the entire circumference of the substrate 11 arranged on the entire circumference, or the LED light source 13 may be arranged on the substrate 11 arranged on a part of the outer periphery.
  • the LED light source 13 may be arranged over the entire area. The arrangement relationship between these substrates 11 and the LED light sources 13 may be determined as appropriate depending on the design of the lighting device.
  • the micro-foamed resin sheet 15 is formed to have a concave cross-sectional shape by heat molding, bending, or other molding processes that do not involve heating.
  • the heat forming may be any of press forming, vacuum forming, pressure forming, vacuum pressure forming, and match molding using upper and lower molds.
  • the shape of the micro-foamed resin sheet in plan view may be any shape as long as it does not impair the diffuse reflection properties, but considering the protective effect of the micro-foamed resin sheet, the cross-sectional shape of the micro-foamed resin sheet should be a concave shape.
  • a substantially U-shape, an inverted trapezoid shape, or a bowl-shape is desirable, having a flat part in the center of a concave shape.
  • the micro-foamed resin sheet 15 has a fine cell structure, so even if the sheet is molded using various molding methods, as long as the cell structure does not change significantly, diffuse reflection and reflection before and after molding will occur. It has a characteristic that the transmission loss of radio waves and the scattering loss of radio waves based on the relative dielectric constant are almost the same.
  • the micro-foamed resin sheet 15 is, for example, a PET resin sheet or a PC resin sheet. If the diffuse reflectance of the barium sulfate standard plate in the visible light band of wavelengths 450 to 650 nm is 100%, the micro foam resin sheet 15 has a diffuse reflectance of 95% or more with respect to the barium sulfate standard plate.
  • the micro-foamed resin sheet has a specific dielectric constant of desirably 96% or more, more desirably 98% or more, and 1.8 or less. The higher the diffuse reflectance, the higher the brightness can be obtained even after multiple reflections.
  • the micro-foamed resin sheet 15 is a material that has excellent light diffusing reflectance and, at the same time, excellent radio wave transmittance with a relative dielectric constant of 1.8 or less compared to a substrate or a light transmitting member, and can be used as a light reflecting plate. used.
  • the dielectric constant of the micro-foamed resin sheet is measured using the method specified in ASTM D2520 and JIS C2565 at a measurement frequency of 2 GHz on a sheet of 78 mm long x 2.4 mm wide x 1 mm thick (foamed resin sheet). The measurement was performed using a sample with a magnification of 4 times.
  • the dielectric constant of ordinary non-foamed materials such as PET resin and PC resin is 2.9 to 3.0, but the ratio of PET resin foam, PC resin foam, and especially these micro-foamed resin foams is 2.9 to 3.0. Both dielectric constants can be 1.8 or less, or even 1.5 or less. In this way, while the dielectric constant of ordinary transparent resin exceeds 2.0, the dielectric constant of foam is low, so it is possible to reduce losses such as reflection, absorption, and scattering when radio waves are transmitted. can.
  • the measurement result of the dielectric constant of the micro-foamed resin sheet of PET resin is 1.31
  • tan ⁇ (Tangent Delta) is 0.0020
  • the dielectric constant of the micro-foamed resin sheet of PC resin is 1.31.
  • tan ⁇ is 0.0022
  • the relative permittivity of both PET resin and PC resin is 1.50 or less
  • tan ⁇ also satisfies 0.0022 or less, so the heat loss of radio waves is also reduced. It turns out that there are few.
  • radio wave absorption loss was evaluated using the S-parameter method.
  • the transmission loss is the reception level between the antennas. It was evaluated as Note that the transmission loss between both antennas when no microfoamed resin sheet is disposed was set to 0 dB.
  • the absorption loss in the frequency band of 70 to 100 GHz was obtained from S21 of the S parameter using a network analyzer (model number N5291A manufactured by KEYSIGHT).
  • the rate of change in the radio wave attenuation rate of the micro-foamed resin sheet of PET resin and PC resin with respect to the radio wave attenuation rate due to radio wave absorption in the air in the wavelength band of 70 to 100 GHz is within the range of 0 to -0.15 dB. desirable.
  • the micro-foamed resin sheet 15 preferably has an average cell diameter in the range of 0.2 ⁇ m to 10 ⁇ m, for example. If the average bubble diameter is too small than 0.2 ⁇ m, the light transmittance will increase and the reflectance will decrease. Further, if the average bubble diameter is too large, the diffuse reflectance decreases, so it is desirable that the average bubble diameter is 0.2 ⁇ m or more and 10 ⁇ m or less.
  • the micro-foamed resin sheet 15 placed in front of the wireless communication device has an average bubble diameter of 0.2 to 10 ⁇ m, so it has excellent diffuse reflection properties and dielectric properties, and not only has little radio wave transmission loss, but also has low radio wave scattering. There are also fewer losses.
  • the wavelength of the radio waves used is, for example, 100 GHz
  • the wavelength will be approximately 3 mm.
  • the foam of the present invention has a bubble diameter of 0.2 to 10 ⁇ m, which is a sufficiently small diameter of several hundredths of the wavelength of the radio waves, so that when the foam passes through the microfoamed resin sheet, although it is less susceptible to scattering, when using ordinary foam, the bubble diameter is 100 ⁇ m to 300 ⁇ m, which is one tenth (1/10) to several tens of minutes compared to the wavelength of approximately 3 mm of millimeter wave radio waves. Since the wavelength is relatively large, the bubbles themselves become a cause of radio wave scattering. As described above, the microfoamed resin sheet 15 has the effect of reducing not only the transmission loss of radio waves but also the scattering loss.
  • a light transmitting member 7 is arranged on the opening side of the micro-foamed resin sheet 15 formed into a concave shape.
  • the light transmitting member 7 is fixed to the opening edge of the micro foam resin sheet 15 by the frame member 5.
  • the front surface of the light transmitting member 7 does not have to have a flat shape.
  • the light transmitting member 7 may have a somewhat uneven shape, such as a shape in which the central portion thereof protrudes forward.
  • the light transmitting member 7 is made of, for example, a light transmitting transparent resin such as a PC resin, an ABS resin, a PET resin, a vinyl chloride resin, an acrylic resin such as a PMMA resin, a polystyrene resin, a COP resin, a COC resin, or a transparent glass. Applicable. Further, the light transmitting member 7 may be made of a translucent resin obtained by adding a pigment to a transparent resin. Further, the light transmitting member 7 may be a translucent resin made semitransparent by roughening the surface of the transparent resin on the light extraction portion side or forming a fine uneven structure. Further, the light transmitting member 7 may be a translucent laminate in which a translucent resin film is attached to the surface of transparent resin or transparent glass, or may be semitransparent colored glass.
  • a translucent resin such as a PC resin, an ABS resin, a PET resin, a vinyl chloride resin, an acrylic resin such as a PMMA resin, a polystyrene resin, a COP resin
  • the translucent light transmitting member 7 for example, titanium oxide, zinc oxide, talc, mica, kaolin, etc. may be added to a transparent resin as a white pigment.
  • the amount of the pigment added must be controlled within a range that can maintain transparency.
  • a resin film obtained by coating a polyester film with a vinyl chloride resin can be used.
  • a light guiding space 19 is formed between the molded micro-foamed resin sheet 15 and the light transmitting member 7. More specifically, by arranging the micro-foamed resin sheet 15 having a concave cross-sectional shape behind the light-transmissive member 7 supported by the frame member, the light-transmissive member 7 and the micro-foamed resin A light guiding space 19 is formed between the sheet 15 and the sheet 15 .
  • a substrate 11 is arranged inside the light guiding space 19 and on the outer periphery of the frame member 5 or the light transmitting member 7. That is, the substrate 11 is formed on the outer periphery of the light transmitting member 7 and arranged on the outer periphery of the light guide space 19.
  • a composite structure of a lighting device and a wireless communication device according to the invention is obtained.
  • FIG. 3 is an enlarged view of the vicinity of the substrate 11.
  • the LED light source 13 is arranged on the substrate 11.
  • the LED light source 13 may be an RGB light source, a one-chip LED light source whose emission color can be switched to RGB, a white LED light source, a daylight LED light source, a white LED light source using phosphor, or a white or daylight LED array light source. Either one or a combination of these light sources can be applied.
  • the LED light source 13 is arranged toward the micro-foamed resin sheet 15 so that the light emitted from the LED light source 13 is reflected by the micro-foamed resin sheet 15. That is, the light-emitting surface of the LED light source 13 faces the micro-foamed resin sheet 15 in the opposite direction to the light-transmitting member so that the light emitted from the light-emitting surface of the LED light source 13 is reflected by the micro-foamed resin sheet 15.
  • the micro-foamed resin sheet 15 has a high diffuse reflectance, the light emitted from the LED light source 13 is diffusely reflected by the micro-foamed resin sheet 15, and a portion of the light is directed toward the light transmitting member 7 while other light is emitted from the LED light source 13.
  • the light becomes uniform, and it becomes possible to extract uniform indirect light.
  • the shape of the light guide space 19 may be any shape as long as it is a concave shape with a concave cross section so that the reflected light upon receiving the light emitted from the LED light source 13 is easily reflected in the direction of the light transmitting member 7. It can be of any shape.
  • the cross-sectional shape of the micro-foamed resin sheet 15 includes a U-shape, an inverted trapezoid shape, a bowl-shape, a gently concave shape, and the like.
  • the shape of the micro-foamed resin sheet 15 may be a substantially U-shape with a flat part in the center of a concave shape, or an inverted table shape. The shape is desirable.
  • a covering member 9 is placed on the front surface of the light transmitting member 7 to cover a part of the light transmitting member 7.
  • the covering member 9 may be, for example, a thin film coating member 9 made of colored paint, metal vapor deposition, or metal plating. In this case, for example, a thin film plating of In, Ge, Sn, etc. Alternatively, Al may be deposited through a mask with a large number of dot patterns.
  • a colored resin having a predetermined thickness that does not transmit light may be provided on the front surface of the light transmitting member 7.
  • the light transmitting portion is divided into an outer circumferential side 8 and an inner circumferential side 10 by the covering member 9 disposed on the light transmitting member 7. That is, the inner peripheral side 10 is a region surrounded by the covering member 9, and the outer peripheral side 8 is a region formed between the covering member 9 and the frame member 5.
  • the LED light source 13 is arranged toward the micro foam resin sheet 15 side.
  • the light is made uniform by the internal light guiding space 19
  • substantially uniform light cannot be taken out from the light transmitting portion of the light transmitting member 7 where the covering member 9 is not arranged. can. Therefore, the indirect light from the light guide space 19 can be extracted from the light transmitting portions on the outer circumferential side 8 and the inner circumferential side 10 at substantially the same brightness.
  • the emission direction of the LED light source 13 does not necessarily have to be opposite to the light extraction direction.
  • the LED light source 13 by arranging the LED light source 13 such that the light transmitting portion through which light is transmitted from the light transmitting member 7 is not included within the orientation angle range of the LED light source 13, the light extracted from the illumination device 3 can be made into substantially uniform indirect light. It can only be done.
  • the light transmitting member 7 is formed in the shape of a flat plate or a curved surface having an uneven structure
  • the shape of the light transmitting portion side of the light guide space 19 is formed in the shape of a flat plate or a curved surface having an uneven structure
  • a wireless communication device 17 is arranged on the back side of the reflective surface of the micro-foamed resin sheet 15 on the side opposite to the light guide space 19. That is, the wireless communication device 17 is arranged on the back side of the lighting device 3. Note that the wireless communication device 17 is fixed to a part of the lighting device 3 (for example, the frame member 5) by, for example, a support member (not shown) or the like.
  • the wireless communication device 17 is a device that can emit radio waves, and can be used for, for example, millimeter wave radar or 5G communication.
  • millimeter wave radar is characterized by being less affected by weather conditions such as rain, snow, and fog, and optical environmental conditions such as brightness. For this reason, millimeter waves in the frequency band from 24 GHz to approximately 80 GHz are used for obstacle detection, but the present invention is not limited to the above range and can also be applied to frequency bands applied to current 5G communications.
  • the micro foam resin sheet 15 placed in front of the wireless communication device 17 is a light reflecting plate that can also serve as a casing of the lighting device, and the micro foam resin sheet 15 It functions as a part of the housing of the device 3 and is arranged so as to be in contact with the radio wave emitting surface of the wireless communication device 17 .
  • the substrate 11 is formed on the outer periphery of the light transmitting member 7, and the substrate 11 is not arranged at the center of the lighting device 3. Therefore, the substrate 11 is not placed in the radio wave irradiation range in front of the wireless communication device 17, and the radio waves emitted from the wireless communication device 17 pass through the micro foam resin sheet 15 and the light transmitting member 7. Illuminated forward.
  • the micro-foamed resin sheet 15 is a material that has a lower dielectric constant than the substrate 11, has excellent radio wave transmittance, and has low radio wave absorption. In comparison, loss of radio waves can be reduced.
  • the dielectric constant of a glass epoxy substrate is 4.5 to 5.2.
  • the micro foam resin sheet 15 is arranged so as to overlap the radiation range of the radio waves emitted from the wireless communication device 17, but since it is formed of a material with a low dielectric constant, there is little reflection or absorption of radio waves, and the micro foam resin sheet 15 is The influence of radio wave loss when transmitting through the foamed resin sheet 15 can be reduced. Since the micro-foamed resin sheet 15 has a fine cell structure, even if the sheet is molded by thermoforming, the cell structure will not change significantly, so the light diffusive reflectance, relative dielectric constant, and radio wave characteristics before and after molding will be Transmission loss and radio wave scattering loss are almost the same before and after molding.
  • the substrate 11 has a higher dielectric constant and a higher radio wave absorption rate than the micro-foamed resin sheet 15, but since the substrate 11 is disposed on the outer periphery of the light-transmitting member 7, the back surface of the micro-foamed resin sheet 15 is Radio waves radiated from the wireless communication device 17 disposed on the side are radiated to the front of the composite structure 1 without passing through the substrate 11. Therefore, loss when transmitting through the substrate 11 can be suppressed.
  • the light transmitting member 7 or the light transmitting member 7 and the micro-light transmitting member 7 are installed in the center of the illumination device corresponding to the radio wave emitting surface in front of the wireless communication device so as not to obstruct the transmission of radio waves from the wireless communication device.
  • Only the foamed resin sheet 15 is arranged, and the LED light source 13, board 11, frame member 5, and casing of the lighting device are not arranged, and the LED light source, board, frame member, and casing of the lighting device are arranged around the outer periphery of the lighting device. By arranging it in the area, the influence of radio wave loss can be reduced.
  • the micro-foamed resin sheet and the micro-foamed resin sheet include cases where the micro-foamed resin sheet is placed in contact with the radio wave emitting surface of the wireless communication device and cases where the micro-foamed resin sheet is placed at a predetermined distance from the radio wave emitted surface of the wireless communication device.
  • the distance to the wireless communication device is 5 mm or less
  • the micro-foamed resin sheet has a micro-foamed cell structure with a dielectric constant of 1.8 or less, so that the effect can be more reliably obtained. That is, the micro-foamed resin sheet is made of a material that has excellent light diffusion and reflection properties, and has a lower dielectric constant and excellent radio wave transmittance than the substrate or the light-transmitting member.
  • the lighting device 3 is an outdoor lighting device
  • the wireless communication device 17 is a wireless communication device for communicating with pedestrians outside the room or vehicles running on the road. This method is applicable to cases where there is a machine. In this way, with a composite structure in which a wireless transmitter is attached to an outdoor lighting device, there are no obstacles between pedestrians or cars and the outdoor lighting device, making it possible to communicate outdoors using the wireless transmitter. suitable for
  • the wireless communication device 17 is a wireless transmitter used in 5G communication
  • the lighting device 3 is a lighting device for an advertising electronic signboard or a guide electronic signboard device.
  • the lighting device when used as a large lighting device such as an outdoor lighting device, a lighting device for an advertising electronic signboard, or a guidance electronic signage device, a frame
  • LED light sources arranged around the outer periphery of the lighting device as a plurality of collective light sources arranged in a grid, houndstooth pattern, or array on a substrate with a predetermined width provided on the member, the lighting device can be In addition to increasing the size, the brightness of the lighting device can be improved.
  • a plurality of wireless communication devices can be provided in parallel. Further, even if the purpose is not to increase the size of the lighting device, by arranging a plurality of LED light sources, it is possible to improve the brightness.
  • the composite structure 1 may be attached to an obstacle on the moving object. It can also be used as a peripheral monitoring or forward monitoring radar for detection.
  • the composite structure 1 consisting of the wireless communication device 17 capable of emitting millimeter wave radar or the like and the decorative lighting device 3 has a high design quality due to the function of emitting colored light and displaying characters, logos, advertisements, etc. It is possible to increase
  • millimeter wave radar such as a radar wavelength in the 24 to 26 GHz band, 77 GHz band, 79 GHz band, etc.
  • the transmission loss differs depending on the material such as glass, resin material, concrete, etc., but the 79 GHz band is larger.
  • FIG. 4 is a sectional view showing a composite structure 1a according to the second embodiment.
  • the same reference numerals as those in FIGS. 1 to 3 are given to structures that perform the same functions as those of the composite structure 1, and redundant description will be omitted.
  • the composite structure 1a has substantially the same structure as the composite structure 1, but the arrangement of the wireless communication device 17 is different.
  • a housing 21 is used, and the lighting device 3 and the wireless communication device 17 are fixed to the common housing 21 at the outer peripheral portions of the respective devices.
  • the micro foam resin sheet 15 placed in front of the wireless communication device 17 is placed at a predetermined distance from the radio wave emitting surface of the wireless communication device 17 .
  • the lighting device 3 and the wireless communication device 17 do not necessarily have to be fixed together, but may be arranged at a predetermined distance apart, and may be separate members separated from each other at a predetermined distance. It may be fixed.
  • the lighting devices 3 may be placed in front of the wireless communication device 17 in contact with each other, or may be separate from each other and fixed to separate members.
  • the wireless communication device 17 and the lighting device 3 may be in contact with each other, or may not be in contact with each other and may be separated by a predetermined distance.
  • FIG. 5A is a cross-sectional view showing a composite structure 1b according to the third embodiment.
  • the wireless communication device 17 is placed in contact with the micro-foamed resin sheet 15 forming the light guide space, but like the composite structure 1a, the wireless communication device 17 is It may be arranged at a predetermined distance from the micro-foamed resin sheet 15.
  • the composite structure 1b has substantially the same structure as the composite structure 1, but the arrangement of the covering member 9 is different.
  • FIG. 5B is an enlarged view of section C in FIG. 5A.
  • the covering member 9 is arranged on the front surface of the light transmitting member 7, but in the composite structure 1b, the covering member 9 is arranged on the back surface of the light transmitting member 7. That is, a part of the back surface of the light transmitting member 7 is covered with a thin film coating member 9 made of colored paint, metal vapor deposition, or metal plating, or the back surface of the light transmitting member 7 is coated with a predetermined thickness of non-light transmitting material.
  • a covering member made of a colored resin having a certain color is disposed.
  • a micro foamed resin sheet 15a is directly attached to the inner peripheral surface at a position corresponding to the covering member 9. That is, all positions on the light guide space 19 side of the light transmitting member 7 except for the light transmitting portion are covered with a light reflective microfoamed resin sheet 15a. Note that the same member as the micro-foamed resin sheet 15 can be used for the micro-foamed resin sheet 15a.
  • the micro-foamed resin sheet 15a can prevent the light in the light guide space 19 from being absorbed and reflected by the covering member, and can more efficiently diffuse and reflect the light. Therefore, it is possible to extract diffusely reflected light with a more uniform brightness level.
  • the micro-foamed resin sheet 15a is attached directly to the back surface of the light-transmitting member 7 without disposing the covering member 9, the micro-foamed resin sheet 15a is a white sheet-like member with no design. Therefore, if the micro-foamed resin sheet 15a is directly visible from the front surface of the light-transmitting member 7, the design quality will deteriorate. On the other hand, by arranging the micro foam resin sheet 15a only on the back surface of the covering member 9, the micro foam resin sheet 15a is not directly visible from the front surface of the light transmitting member 7, and the design can be improved. can.
  • FIG. 6A is a cross-sectional view showing the composite structure 1c.
  • the covering member 9 is arranged on the front side of the light transmitting member 7, but the micro foam resin sheet 15a is arranged on the back side of the light transmitting member 7 at a position corresponding to the covering member 9.
  • light of uniform brightness can be extracted by the diffuse reflection by the micro-foamed resin sheet 15a, and the micro-foamed resin sheet 15a can be visually recognized from the front side of the light-transmitting member 7 by the covering member 9. can be suppressed.
  • the micro-foamed resin sheet 15a is placed at a position corresponding to the colored resin on the back side of the light-transmitting member 7 at a predetermined distance from the colored resin serving as the covering member 9, so that the light-transmitting member 7 can be It is desirable that the micro-foamed resin sheet 15a be formed in a similar shape to the colored resin and slightly smaller so that it is not visible from the outside when the transparent portion is viewed from an oblique direction. On the other hand, if a part of the outer circumference of the micro-foamed resin sheet 15a may be visible from the outside, the micro-foamed resin sheet 15a may be formed to have the same size as the colored resin.
  • FIG. 6B is a cross-sectional view showing the composite structure 1d.
  • the composite structure 1d is substantially the same as the composite structure 1c, but the non-light-transmitting colored resin 9a is arranged on the front surface of the light-transmitting member 7 so as to be substantially flush with the front surface of the light-transmitting member 7. That is, in a part of the front surface of the light transmitting member 7, a colored resin 9a having a predetermined thickness and being non-light transmitting is disposed on a portion of the light transmitting member 7 that is substantially on the same plane.
  • a micro foamed resin sheet 15a is arranged on the back side of the light transmitting member 7 at a position corresponding to the colored resin 9a. The same effect as the composite structure 1c etc. can be obtained also in the composite structure 1d.
  • the micro-foamed resin sheet 15a is placed at a position corresponding to the colored resin 9a on the back surface side of the light-transmitting member 7 at a predetermined distance from the colored resin 9a as the covering member 9, so it is similar to FIG. 6A.
  • the micro-foamed resin sheet 15a may be formed to have the same size as the colored resin 9a.
  • FIG. 7A is a cross-sectional view showing the composite structure 1e.
  • the composite structure 1e is substantially the same as the composite structure 1b, but the colored resin 9a is arranged on the back surface of the light transmitting member 7 so as to be substantially flush with the rear surface of the light transmitting member 7. That is, on a part of the back surface of the light transmitting member 7, a colored resin 9a that is non-light transmitting and having a predetermined thickness is arranged on a portion that is substantially on the same plane as the light transmitting member 7, and a position corresponding to the colored resin 9a is arranged.
  • a micro-foamed resin sheet 15a having the same shape as the colored resin 9a is arranged on the back side of the light transmitting member 7. The same effects as the composite structure 1c and the like can be obtained also in the composite structure 1e.
  • FIG. 7B is a cross-sectional view showing the composite structure 1f.
  • Composite structure 1f is substantially the same as composite structure 1e, but colored resin 9a is arranged inside light transmitting member 7. That is, a colored resin 9a having a predetermined thickness that does not transmit light is arranged inside the light-transmitting member 7, and a micro-foamed resin sheet 15a is arranged on the back side of the light-transmitting member 7 at a position corresponding to the colored resin 9a. be done. The same effect as the composite structure 1c etc. can be obtained also in the composite structure 1f.
  • the micro-foamed resin sheet 15a as the covering member 9 is placed at a position corresponding to the colored resin 9a on the back side of the light transmitting member 7 at a predetermined distance from the colored resin 9a, so that the same procedure as in FIG. 6B is performed.
  • the micro-foamed resin sheet 15a may be formed to have the same size as the colored resin 9a.
  • FIG. 8 is a cross-sectional view showing the composite structure 1g.
  • the composite structure 1g is substantially the same as the composite structure 1f, but the colored resin 9a is arranged to have substantially the same thickness as the light transmitting member 7. 5A to 8, a micro foam resin sheet 15a is arranged on the back surface of the light transmitting member 7 at a position corresponding to the colored resin 9a as the covering member 9 at a predetermined distance from the colored resin 9a.
  • the micro foam resin sheet 15a can be placed directly on the back side of the covering member 9 placed on the back side of the light transmitting member 7, but the increase in the brightness level of the light extracted from the light transmitting part can be suppressed to a predetermined level. In this case, it is not necessary to arrange the micro-foamed resin sheet 15a on the back side of the covering member 9 and the colored resin 9a.
  • a microfoamed resin sheet 15a is arranged on the back side of the colored resin 9a. Therefore, light of uniform brightness can be extracted by the diffuse reflection by the micro foam resin sheet 15a, and the colored resin 9a suppresses the micro foam resin sheet 15a from being visible from the front of the light transmitting member 7. be able to.
  • a part of the front or back surface of the light transmitting member 7 is covered with a thin film coating member 9 made of colored paint, metal vapor deposition, or metal plating, or the front or back surface of the light transmitting member 7 or the light
  • a colored resin 9a that is non-transparent and has a predetermined thickness is disposed in a portion of the transparent member 7 that is substantially on the same plane or inside the light-transmissive member 7, or instead of a part of the light-transparent member 7,
  • the colored resin 9a having the same thickness as the light transmitting member 7 may be disposed.
  • a part of the light transmitting member 7 is coated with a coating member 9 made of colored paint, metal vapor deposition, metal plating, or a non-light transmitting colored resin having a predetermined thickness, or is coated with a light transmitting member 9.
  • a non-light-transmitting colored resin 9a having a predetermined thickness is placed in place of the light-transmitting member 7 in a part of the member 7, the light-transmitting member 7 is not covered with the covering member 9 and the light transmitting Light can be extracted from the transparent portion where the colored resin 9a is not disposed.
  • micro foam resin sheet 15a on the back side of the light transmitting member 7 at a position corresponding to the covering member 9 or the colored resin 9a, light with uniform brightness can be taken out through diffuse reflection by the micro foam resin sheet 15a. In addition, it is possible to prevent the micro foamed resin sheet 15a from being visible from the front side of the light transmitting member 7 by the covering member 9 or the colored resin 9a.
  • the covering member 9 is provided at a predetermined position of the light transmitting member 7 and the covering member 9 is formed to be exposed on the back surface of the light transmitting member 7, the covering member 9 is directly attached to the back surface of the covering member 9. It is sufficient if a micro foamed resin sheet 15a of the same size as 9 is attached. In addition, if the covering member 9 is not exposed on the back surface of the light transmitting member 7, a similar shape to the covering member 9 but slightly smaller in size may be placed at a position corresponding to the covering member 9 on the back surface of the light transmitting member 7. Alternatively, a micro-foamed resin sheet 15a having the same size as the covering member 9 may be attached.
  • the front of the wireless communication device Even if the lighting device is placed in the lighting device, the absorption loss of radio waves emitted from the wireless communication device by the components of the lighting device is small, and regardless of the formation position of the light transmitting part that extracts light from the light transmitting member of the lighting device, It is possible to obtain an indirect lighting device with excellent design that makes the brightness of light extracted from the lighting device substantially constant.
  • a covering member which has a dielectric constant of usually 2.0 or more, excluding the micro-foamed resin sheet that has excellent radio wave transparency. Since only the coated light transmitting member is placed, even if the lighting device is placed in front of the wireless communication device, it is possible to obtain a structure and arrangement method for the wireless communication device and the lighting device that have excellent radio wave transparency. can. Further, it is possible to obtain a composite structure of a lighting device and a wireless communication device that not only has low transmission loss of radio waves but also has excellent scattering loss of radio waves.
  • a lighting device and a wireless communication device in a composite structure using this method of arranging a lighting device and a wireless communication device, it is possible to create a lighting device that has excellent diffuse reflection characteristics and at the same time has excellent transmission loss and scattering loss of radio waves. It is possible to obtain a wireless communication device with a wireless communication device.

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Abstract

This composite structure 1 is a structure in which an illumination device 3 and a wireless communication device 17 have been integrated and composited. A light transmission member 7 is placed on the opening side of a micro-foamed resin sheet 15 having a depression-like recessed shape. A light guide space 19 is formed between the molded micro-foamed resin sheet 15 and the light transmission member 7. An LED light source 13 is placed on a substrate 11. A wireless communication device 17 is placed on the back surface side of the micro-foamed resin sheet 15 which is the side opposite to the light guide space 19. In the composite structure 1, the micro-foamed resin sheet 15 placed in front of the wireless communication device 17 functions as a portion of a housing of the illumination device 3, and is placed so as to contact a radio wave-emitting surface of the wireless communication device 17. As a result, it is possible to obtain a composite structure of an illumination device and a wireless communication device that not only excels in light diffusion reflectance properties and low radio wave transmission loss, but also excels in radio wave scattering loss.

Description

照明装置と無線通信装置の複合構造及び照明装置と無線通信装置の配置方法並びに当該配置方法で配置した照明装置付き無線通信装置A composite structure of a lighting device and a wireless communication device, a method of arranging the lighting device and a wireless communication device, and a wireless communication device with a lighting device arranged using the arrangement method
 本発明は、LED照明装置と無線通信装置とが一体化した複合構造及び照明装置と無線通信装置の配置方法並びに当該配置方法で配置した照明装置付き無線通信装置に関するものである。 The present invention relates to a composite structure in which an LED lighting device and a wireless communication device are integrated, a method of arranging the lighting device and the wireless communication device, and a wireless communication device with a lighting device arranged using the arrangement method.
 例えば、5Gサービスの拡大や情報通信ニーズの高度化により、スモールセル基地局を屋外だけでなく屋内含む種々の場所に多数配置する必要が生じている。このため、小型で低コストである無線通信装置が必要とされている。 For example, with the expansion of 5G services and the increasing sophistication of information and communications needs, it has become necessary to deploy large numbers of small cell base stations not only outdoors but also in various locations, including indoors. Therefore, there is a need for a wireless communication device that is small and low cost.
 従来の無線通信装置は、例えば建物の屋上や壁面などに設置されることが多い。しかし、多数の無線通信装置を設置するためには、設置場所の確保や設置作業によるコスト増などの懸念がある。このため、無線通信装置を屋内外に多数配置して多様化を計るために、例えば、照明装置などとの複合化が検討されている。 Conventional wireless communication devices are often installed, for example, on the roof or wall of a building. However, in order to install a large number of wireless communication devices, there are concerns about securing an installation location and increasing costs due to installation work. Therefore, in order to diversify wireless communication devices by arranging a large number of them indoors and outdoors, for example, combining them with lighting devices is being considered.
 例えば、特許文献1には、筐体により基地局ユニット、誘導灯ユニットおよび共通電源部が収容一体化された基地局装置が開示されている。特許文献1の基地局装置は、移動端末と無線接続して、その移動端末の相手装置との通信を中継する基地局ユニットと、電力供給を受けて所定の動作を実行する誘導灯ユニットと、基地局ユニットおよび誘導灯ユニットに電力を供給する共通電源部と、屋内または屋外において固定的に配備される筐体とを有している。 For example, Patent Document 1 discloses a base station device in which a base station unit, a guide light unit, and a common power supply unit are housed and integrated in a housing. The base station device of Patent Document 1 includes a base station unit that wirelessly connects with a mobile terminal and relays communication with a partner device of the mobile terminal, and a guide light unit that receives power supply and performs a predetermined operation. It has a common power supply unit that supplies power to the base station unit and the guide light unit, and a casing that is fixedly installed indoors or outdoors.
 特許文献1の基地局装置の筐体には、電気設備ユニットの前方に照明装置として発光パネル部と樹脂製の表示パネル部が配置されている。この発光パネルは、LED光源を配置した導光板または面状のEL素子を配置したもので、照明装置が無線通信装置の前方に同一の筐体内部に配置されている。特許文献1によれば、小型であり、低コストで製造可能であり、電波障害を回避でき、災害時であっても動作し得る基地局装置を提供することができる。 In the case of the base station device of Patent Document 1, a light emitting panel section and a resin display panel section are arranged as a lighting device in front of an electrical equipment unit. This light emitting panel has a light guide plate with an LED light source arranged thereon or a planar EL element arranged thereon, and a lighting device is arranged inside the same housing in front of the wireless communication device. According to Patent Document 1, it is possible to provide a base station device that is small, can be manufactured at low cost, can avoid radio wave interference, and can operate even in the event of a disaster.
 また、特許文献2では、身近な情報の双方向性通信装置として多目的な機能を装備したバス停標識を提供するバス停標識安全システムが提案されている。特許文献2のバス停標識安全システムでは、文字や画像による身近な情報や広告の標示装置などを付加した双方向性通信機能がバス停に取り付けられる。また、特許文献2のバス停標識安全システムは、太陽電池やバッテリーを装備し、災害時の停電にも、無線LANによる緊急を要する災害情報告知等多様な情報を提供することができる。 Further, Patent Document 2 proposes a bus stop sign safety system that provides a bus stop sign equipped with a multipurpose function as a two-way communication device for familiar information. In the bus stop sign safety system disclosed in Patent Document 2, a bidirectional communication function is installed at a bus stop, adding a display device for familiar information and advertisements using text and images. Furthermore, the bus stop sign safety system disclosed in Patent Document 2 is equipped with solar cells and batteries, and can provide various information such as emergency disaster information notification via wireless LAN even in the event of a power outage in the event of a disaster.
 このように、特許文献2のバス停標識安全システムによれば、災害情報、自治体広報、緊急地震速報、ニュース、気象情報、大雨情報、花粉情報、波浪警報など各種注意報や警報、或いは競輪、競馬、競艇等の公的レース施設速報や周辺地域の行事や案内、その他主婦向けグルメ情報などの各種最新情報、及び広告を標示、発信することができる。また、特許文献2のバス停標識安全システムは、緊急用の赤色回転ランプ、サイレン、スピーカーなどの伝達手段を具備することもでき、当該バス停標識を利用したネットワークインフォメーションシステムを構築可能である。 As described above, according to the bus stop sign safety system of Patent Document 2, various advisories and warnings such as disaster information, local government public relations, emergency earthquake early warnings, news, weather information, heavy rain information, pollen information, and wave warnings, or bicycle and horse racing It is possible to display and transmit various types of latest information such as breaking news on public race facilities such as boat races, information on events and information in the surrounding area, and other gourmet information for housewives, as well as advertisements. Moreover, the bus stop sign safety system of Patent Document 2 can also be equipped with communication means such as an emergency red revolving lamp, a siren, and a speaker, and it is possible to construct a network information system using the bus stop sign.
 また、特許文献3には、自らが消費する全ての電力を再生可能エネルギーで自家発電し、発電した電力を供給して機器類を点灯駆動可能であり、COを排出しない自己完結型の照明装置と無線通信装置が提案されている。 In addition, Patent Document 3 describes a self-contained lighting system that generates all the electricity it consumes in-house using renewable energy, supplies the generated electricity to light and drive equipment, and does not emit CO2 . A device and a wireless communication device are proposed.
 特許文献3の自家発電システムにおいては、液晶ディスプレイ装置の裏面に配置された太陽光発電装置により発電した電気を、蓄電装置集積層または二次電池に蓄電する。さらに蓄電された電力を利用して、5G基地局から、当該小型基地局で受信した5G電波を増幅して送信することができる。 In the private power generation system of Patent Document 3, electricity generated by a solar power generation device placed on the back surface of a liquid crystal display device is stored in a power storage device integrated layer or a secondary battery. Furthermore, using the stored power, the 5G radio waves received by the small base station can be amplified and transmitted from the 5G base station.
 従来は、内照式看板面や外照式看板面又は店舗の室内空間を明るく点灯照射する種々の照明器具は、商業用電力の供給を受け、グレア光害と思えるほどの光エネルギーを発光し、多くの二酸化炭素(CO)を排出し地球温暖化を助長していたが、特許文献3の照明装置と無線通信装置のシステムによれば、これを抑制することができる。 Conventionally, various lighting fixtures that brightly illuminate internally illuminated signboard surfaces, externally illuminated signboard surfaces, and indoor spaces of stores are supplied with commercial electricity and emit light energy that is considered to be glare light pollution. , a large amount of carbon dioxide (CO 2 ) is emitted and contributes to global warming, but this can be suppressed according to the system of a lighting device and a wireless communication device disclosed in Patent Document 3.
 また、特許文献4には、装置内蔵アンテナがアンテナ基板に配置された照明付き装置内蔵アンテナが提案されている。例えば、ビルの看板、コンビニエンスストア、ドラッグストア、時間決め駐車場、駅、郵便局などの看板で、壁面に取り付けられる看板、突出看板、野立看板、スタンド看板、ポール看板等にも適用可能な、装置内蔵アンテナが組み込まれた看板が提案されている。 Additionally, Patent Document 4 proposes an illuminated device-built-in antenna in which the device-built-in antenna is arranged on an antenna substrate. For example, it can be applied to building signs, convenience stores, drug stores, fixed parking lots, stations, post offices, etc., as well as wall-mounted signs, protruding signs, outdoor signs, stand signs, pole signs, etc. Signboards with built-in device antennas have been proposed.
 特許文献4の看板は、横長の矩形状の基板を備え、基板の表面には複数個の発光素子が基板の長辺にほぼ平行に、それぞれ中心線から所定間隔で2列設けられる。基板のほぼ中央部には、通信用の装置内蔵アンテナが配置されて、照明装置としてのLED発光素子と装置内蔵アンテナが同一基板上に相互に干渉しない異なる位置に配置される。 The signboard of Patent Document 4 includes a horizontally long rectangular substrate, and on the surface of the substrate, a plurality of light emitting elements are provided in two rows approximately parallel to the long sides of the substrate at predetermined intervals from the center line. A device built-in antenna for communication is arranged approximately in the center of the substrate, and an LED light emitting element as a lighting device and a device built-in antenna are arranged on the same substrate at different positions where they do not interfere with each other.
 特許文献4においては、切換手段によって、直接接続するか遅延ラインを介して接続するかが切り換えられる。切換手段の切換に応じて第1エレメント~第4エレメントに供給される給電信号の位相が決定されることから、装置内蔵アンテナのアンテナビームの方向はシートにより決まる。すなわち、アンテナ基板に所定のシートを貼り合わせることで、アンテナビームの方向を設定することができる。 In Patent Document 4, a switching means switches between direct connection and connection via a delay line. Since the phase of the feeding signal supplied to the first to fourth elements is determined in accordance with the switching of the switching means, the direction of the antenna beam of the device built-in antenna is determined by the sheet. That is, by bonding a predetermined sheet to the antenna substrate, the direction of the antenna beam can be set.
 また、特許文献5には、可視光通信システムを利用し、容易に実用化を図ることが可能な位置測定システムが提案されている。特許文献5の位置測定システムは、位置情報を可視光信号で発信する可視光通信ビーコンと、1台のカメラにより撮像した画像情報とを使用して、車両の現在位置を測定することができる。 Further, Patent Document 5 proposes a position measurement system that uses a visible light communication system and can be easily put into practical use. The position measurement system of Patent Document 5 can measure the current position of a vehicle using a visible light communication beacon that transmits position information as a visible light signal and image information captured by one camera.
 特許文献5における可視光通信ビーコンは、道路照明柱に設けられた道路照明灯及び可視光通信装置からなる。車両は、1台のカメラを搭載し、可視光信号から可視光通信ビーコンの位置情報を復調して、現在位置を算出する車両位置計測装置を有する。特許文献5においては、道路用外灯が照明装置と通信装置の両方を有するが、照明装置と通信装置はそれぞれ異なる位置に設けられる。 The visible light communication beacon in Patent Document 5 consists of a road lighting lamp and a visible light communication device provided on a road lighting pole. The vehicle has a vehicle position measuring device that is equipped with one camera and that demodulates the position information of the visible light communication beacon from the visible light signal to calculate the current position. In Patent Document 5, an outdoor road light has both a lighting device and a communication device, but the lighting device and the communication device are provided at different positions.
特開2015-226201号公報Japanese Patent Application Publication No. 2015-226201 特開2010-102279号公報Japanese Patent Application Publication No. 2010-102279 特開2021-35318号公報JP 2021-35318 Publication 特開2021-158492号公報JP 2021-158492 Publication 特開2009-36571号公報Japanese Patent Application Publication No. 2009-36571
 しかし、従来の構造では、無線通信を行うための電波が、照明装置によって阻害されてしまう恐れがある。例えば、一般的に、電波が物質を透過する際の吸収は、物質の比誘電率が高くなるほど大きくなる傾向にある。しかし、照明装置に使用される基板は、通常、比誘電率が高く、電波が基板を透過する際に吸収されて透過損失が大きくなる恐れがある。 However, with the conventional structure, there is a risk that the radio waves for wireless communication may be obstructed by the lighting device. For example, in general, absorption when radio waves are transmitted through a substance tends to increase as the dielectric constant of the substance increases. However, substrates used in lighting devices usually have a high relative permittivity, and when radio waves are transmitted through the substrate, they may be absorbed, resulting in a large transmission loss.
 また、照明装置から取り出される光を均一にするためには、通常、反射板が使用される。しかし、例えば金属製の反射板などは、上述した比誘電率が高く、電波の透過損失が大きくなる恐れがある。しかし、反射板が適切に配置されていないと、光源からの直接光による輝度ムラの要因となる。 Additionally, a reflector is usually used to make the light extracted from the lighting device uniform. However, for example, a reflective plate made of metal has a high dielectric constant as described above, and there is a possibility that the transmission loss of radio waves becomes large. However, if the reflector is not properly placed, it will cause uneven brightness due to direct light from the light source.
 これに対し、特許文献5のように、照明装置と無線通信装置とを異なる位置に配置すれば、無線通信装置からの電波が照明装置によって影響を受けないようなレイアウトとすることは可能である。しかし、このようにすると、照明装置と無線通信装置とを別個に配置する必要があるため小型化が困難である。 On the other hand, as in Patent Document 5, if the lighting device and the wireless communication device are placed in different positions, it is possible to create a layout in which the radio waves from the wireless communication device are not affected by the lighting device. . However, in this case, it is difficult to downsize the device because the lighting device and the wireless communication device need to be placed separately.
 本発明は、このような問題に鑑みてなされたもので、無線通信装置からの電波の損失が小さく、均一な輝度の光を取り出すことが可能な照明装置と無線通信装置の複合構造及び照明装置と無線通信装置の配置方法並びに当該配置方法で配置した照明装置付き無線通信装置を提供することを目的とする。 The present invention has been made in view of such problems, and provides a composite structure of a lighting device and a wireless communication device, and a lighting device that can extract light of uniform brightness with little loss of radio waves from a wireless communication device. An object of the present invention is to provide a method for arranging a wireless communication device, and a wireless communication device with a lighting device arranged using the method.
 前述した目的を達するために、本発明は、マイクロ発泡樹脂シートを用いた、無線通信装置の前方に配置される照明装置と無線通信装置との複合構造であって、前記照明装置は、LED光源と、前記LED光源を支持する基板と、光透過部材と、前記光透過部材の外周部を支持する枠部材と、光拡散反射性のマイクロ発泡樹脂シートと、を有し、前記枠部材により支持された前記光透過部材の後方に、断面形状が窪み状の凹形状に成形された前記マイクロ発泡樹脂シートを配置することで、前記光透過部材と前記マイクロ発泡樹脂シートとの間に導光空間が形成され、前記LED光源の発光面から出射される光が前記マイクロ発泡樹脂シートにより反射されるように、前記LED光源の発光面が前記マイクロ発泡樹脂シートに対向して、前記光透過部材と反対方向に向けて配置され、前記無線通信装置は、前記マイクロ発泡樹脂シートの光反射面の背面側に配置され、前記無線通信装置の前方に配置された前記マイクロ発泡樹脂シートが、前記照明装置の筐体の一部として前記無線通信装置の電波放射面に接触するように配置されるか、前記無線通信装置の電波放射面から所定距離離間して配置され、前記マイクロ発泡樹脂シートは、光の拡散反射性に優れると同時に、前記基板や前記光透過部材と比較して比誘電率が低く電波透過性に優れる材料であることを特徴とする照明装置と無線通信装置の複合構造である。ここで、前記基板は、枠部材の導光空間側の必要な位置または光透過部材の外周の導光空間側に形成されるか、両者に跨って導光空間側に形成されることが望ましい。 In order to achieve the above-mentioned object, the present invention provides a composite structure of a lighting device and a wireless communication device, which are arranged in front of a wireless communication device, using a micro-foamed resin sheet, the lighting device having an LED light source. and a substrate supporting the LED light source, a light transmitting member, a frame member supporting an outer peripheral portion of the light transmitting member, and a light diffusing and reflecting microfoamed resin sheet, and supported by the frame member. By arranging the micro-foamed resin sheet having a concave cross-sectional shape behind the light-transmissive member, a light-guiding space is created between the light-transmissive member and the micro-foamed resin sheet. is formed, and the light-emitting surface of the LED light source is opposed to the micro-foamed resin sheet, so that the light emitted from the light-emitting surface of the LED light source is reflected by the micro-foamed resin sheet, and the light-transmitting member The wireless communication device is placed facing the opposite direction, the wireless communication device is placed on the back side of the light reflecting surface of the micro foam resin sheet, and the micro foam resin sheet placed in front of the wireless communication device is placed on the back side of the light reflecting surface of the micro foam resin sheet, and the micro foam resin sheet is placed in front of the wireless communication device. The micro-foamed resin sheet is placed in contact with the radio wave emitting surface of the wireless communication device as part of the casing of the wireless communication device, or is placed at a predetermined distance from the radio wave emitting surface of the wireless communication device, and the micro foam resin sheet This is a composite structure of a lighting device and a wireless communication device, characterized in that the material is made of a material that has excellent diffuse reflection properties, has a lower relative permittivity than the substrate and the light transmitting member, and has excellent radio wave transmittance. Here, it is preferable that the substrate is formed at a necessary position on the light guide space side of the frame member, on the light guide space side of the outer periphery of the light transmitting member, or formed on the light guide space side spanning both. .
 前記無線通信装置の前方の電波放射面に対応する前記照明装置の中央部には前記無線通信装置からの電波の発信を阻害しないように、前記光透過部材、及び前記マイクロ発泡樹脂シートのみが配置され、前記照明装置のLED光源、基板、枠部材、及び筐体が配置されずに、前記照明装置のLED光源や基板、枠部材、筐体が照明装置の外周部に配置されることを特徴とする請求項1に記載の照明装置と無線通信装置の複合構造とすることができる。ここで、これらの部材を無線通信装置の電波放射面に対応する位置に配置しないのは、電波放射面の前方にこれらの部材が配置されると無線通信装置からの放射される電波を吸収・反射・散乱するなどして透過損失が生じるためであり、LED光源、基板、枠部材、筐体は、必要に応じて無線通信装置の電波の放射を阻害しない範囲で外周部に配置されることが望ましい。 Only the light transmitting member and the micro foam resin sheet are arranged in a central part of the lighting device corresponding to a front radio wave emitting surface of the wireless communication device so as not to obstruct transmission of radio waves from the wireless communication device. and the LED light source, the board, the frame member, and the casing of the lighting device are arranged on the outer periphery of the lighting device, without the LED light source, the board, the frame member, and the casing being arranged. It is possible to have a composite structure of the lighting device according to claim 1 and the wireless communication device. The reason why these members are not placed in positions corresponding to the radio wave emitting surface of the wireless communication device is that if these members are placed in front of the radio wave emitting surface, they will absorb the radio waves emitted from the wireless communication device. This is because transmission loss occurs due to reflection and scattering, so the LED light source, board, frame member, and housing should be placed on the outer periphery as necessary to the extent that they do not interfere with the radio wave radiation of the wireless communication device. is desirable.
 前記無線通信装置の前方に配置された前記マイクロ発泡樹脂シートは、平均気泡径が0.2~10μmのマイクロ発泡樹脂シートであり、前記マイクロ発泡樹脂シートは、波長450~650nmの可視光帯における硫酸バリウム標準板の拡散反射率を100%とすると、前記硫酸バリウム標準板に対する前記マイクロ発泡樹脂シートの拡散反射率が95%以上の前記照明装置の筐体を兼ねることが可能な光反射板であり、前記マイクロ発泡樹脂シートが前記無線通信装置の電波放射面に接触するように配置される場合と前記無線通信装置の電波放射面から所定距離離間して配置される場合を含めた、前記マイクロ発泡樹脂シートの比誘電率の測定をASTM D2520およびJIS C2565に規定される方法を用いて、測定周波数2GHzにて測定した場合の値が1.8以下であってもよい。また、前記マイクロ発泡樹脂シートと前記無線通信装置とが所定距離離間される場合の距離は、5mm以下であることが望ましい。 The micro-foamed resin sheet disposed in front of the wireless communication device is a micro-foamed resin sheet with an average cell diameter of 0.2 to 10 μm, and the micro-foamed resin sheet is a micro-foamed resin sheet that has an average cell diameter of 0.2 to 10 μm. If the diffuse reflectance of the barium sulfate standard plate is 100%, the micro-foamed resin sheet has a diffuse reflectance of 95% or more relative to the barium sulfate standard plate, and is a light reflecting plate that can also serve as a casing of the lighting device. The micro-foamed resin sheet may be placed in contact with the radio wave emitting surface of the wireless communication device, or may be placed at a predetermined distance from the radio wave emitting surface of the wireless communication device. The dielectric constant of the foamed resin sheet may be measured at a measurement frequency of 2 GHz using a method specified in ASTM D2520 and JIS C2565, and the value may be 1.8 or less. Further, when the micro foam resin sheet and the wireless communication device are separated by a predetermined distance, the distance is preferably 5 mm or less.
 前記無線通信装置の前方に配置された前記マイクロ発泡樹脂シートは、平均気泡径が0.2~10μmであるため、拡散反射特性と誘電特性に優れ、電波透過損失が少ないだけでなく、電波の散乱損失も少ないことを特徴とする照明装置と無線通信装置の複合構造であってもよい。 The micro-foamed resin sheet placed in front of the wireless communication device has an average cell diameter of 0.2 to 10 μm, so it not only has excellent diffuse reflection properties and dielectric properties, but also has low radio wave transmission loss. It may also be a composite structure of a lighting device and a wireless communication device, which is characterized by low scattering loss.
このような照明装置と無線通信装置の配置とすることで、マイクロ発泡樹脂シートが照明装置の光反射板をとして間接照明装置を実現するとともに、無線通信装置から放射される電波の透過を阻害せずに、しかも無線通信装置の表面の保護効果を有し、さらに無線通信装置の前方に照明装置を配置することで可能になる間接照明装置と無線通信装置の複合構造の小型化が実現できる。 By arranging the lighting device and the wireless communication device in this way, the micro-foamed resin sheet serves as a light reflection plate for the lighting device to realize an indirect lighting device, and also prevents the transmission of radio waves emitted from the wireless communication device. Moreover, it has the effect of protecting the surface of the wireless communication device, and furthermore, by arranging the lighting device in front of the wireless communication device, the combined structure of the indirect lighting device and the wireless communication device can be miniaturized.
 前記光透過部材は、PC樹脂、ABS樹脂、PET樹脂、塩化ビニル樹脂、アクリル樹脂、ポリスチレン樹脂、COP樹脂、COC樹脂のいずれかの光透過性の透明樹脂又は透明ガラス、あるいは、前記透明樹脂に顔料を添加した半透明樹脂、前記透明樹脂の光取出し部側の表面を粗面化または微小な凹凸構造を形成することで半透明化した半透明樹脂、前記透明樹脂または前記透明ガラスの表面に半透明な樹脂フィルムを貼り付けた半透明積層体、あるいは半透明な着色ガラスのいずれかであってもよい。ここで、前記光透過部材を構成する樹脂は、COP樹脂やCOC樹脂などがある。COP樹脂は、高透明性、耐熱性、吸水性に優れる透明汎用エンプラとして知られており、光学用、バイオ用、医療用、自動車用などに使用され、さらに低誘電性、低誘電正接性にも優れていることから、高周波コネクタや高周波アンテナ基板材料などに使用される。COC樹脂は、COP樹脂をエチレン系樹脂やゴム系樹脂などと共重合したものであり、COP樹脂の場合の耐熱性や衝撃特性等の機械的特性の調整に使用される。
 さらに、上記導光板を形成する樹脂の中でも、PC樹脂、ABS樹脂、PET樹脂、塩化ビニル樹脂、アクリル樹脂、ポリスチレン樹脂などと較べて、無線通信装置からの電波の透過性を考慮して光透部材を選定する場合に、特に好ましいのは比誘電率、比誘電正接ともに低いCOP樹脂、COC樹脂である。
The light transmitting member is made of a light transmitting transparent resin such as PC resin, ABS resin, PET resin, vinyl chloride resin, acrylic resin, polystyrene resin, COP resin, or COC resin, or transparent glass, or the transparent resin. A semi-transparent resin to which a pigment has been added, a semi-transparent resin made translucent by roughening the surface of the transparent resin on the light extraction part side or forming a fine uneven structure, a surface of the transparent resin or the transparent glass. It may be either a translucent laminate with a translucent resin film attached, or translucent colored glass. Here, the resin constituting the light transmitting member includes COP resin, COC resin, and the like. COP resin is known as a transparent general-purpose engineering plastic with excellent transparency, heat resistance, and water absorption, and is used for optical, biological, medical, and automotive applications. Because of its excellent properties, it is used for high-frequency connectors and high-frequency antenna substrate materials. COC resin is a product obtained by copolymerizing COP resin with ethylene resin, rubber resin, etc., and is used to adjust the mechanical properties such as heat resistance and impact properties of COP resin.
Furthermore, among the resins that form the light guide plate, compared to PC resin, ABS resin, PET resin, vinyl chloride resin, acrylic resin, polystyrene resin, etc., the light guide plate is more transparent than other resins, considering the transmittance of radio waves from wireless communication devices. When selecting members, particularly preferred are COP resins and COC resins that have low dielectric constant and dielectric loss tangent.
 前記光透過部材の前面または背面の一部が着色塗料、金属蒸着、又は金属メッキによる薄膜状の被覆部材により被覆されているか、あるいは前記光透過部材の前面又は背面、あるいは前記光透過部材の略同一平面となる部位又は前記光透過部材の内部に、光非透過性の所定厚さを有する着色樹脂が配置されるか、あるいは前記光透過部材の一部に代えて、前記光透過部材と同一厚みあるいは厚みの異なる着色樹脂が配置されても良い。本発明では、被覆部材は、光を遮蔽する光遮蔽部材として使用されるもので光遮蔽部材と同義である。 A part of the front or back surface of the light transmitting member is covered with a thin film-like coating member made of colored paint, metal vapor deposition, or metal plating, or the front or rear surface of the light transmitting member, or an abbreviation of the light transmitting member. A colored resin having a predetermined thickness that is non-light-transmitting is placed on the same plane or inside the light-transmitting member, or a colored resin that is the same as the light-transmitting member is placed in place of a part of the light-transmitting member. Colored resins having different thicknesses or different thicknesses may be arranged. In the present invention, the covering member is used as a light shielding member that blocks light, and has the same meaning as a light shielding member.
 前記光透過部材の所定位置に前記被覆部材が設けられ、前記被覆部材が前記光透過部材の裏面に露出している場合には、前記被覆部材の裏面に直接前記被覆部材と同一の大きさ前記マイクロ発泡樹脂シートが貼り付けられ、前記被覆部材が前記光透過部材の裏面に露出していない場合には、前記光透過部材の裏面の前記被覆部材に対応する前記光透過部材の内周面位置に前記被覆部材と相似形状で少し大きさが小さい前記マイクロ発泡樹脂シートが貼り付けられることで、前記導光空間側の前記光透過部材の光透過部を除く全ての位置が概ね前記マイクロ発泡樹脂シートで被覆される照明装置と無線通信装置の複合構造とすることも可能である。この場合には、被覆部材を光透過部材の内面に設けて、被覆部材をマイクロ発泡樹脂シートで直接被覆する構造とすることが望ましい。 When the covering member is provided at a predetermined position of the light transmitting member and the covering member is exposed on the back surface of the light transmitting member, a material having the same size as the covering member and the same size as the covering member is directly placed on the back surface of the covering member. When the micro foam resin sheet is attached and the covering member is not exposed on the back surface of the light transmitting member, the position of the inner circumferential surface of the light transmitting member corresponding to the covering member on the back surface of the light transmitting member. By pasting the micro-foamed resin sheet, which has a similar shape and a slightly smaller size to the covering member, almost all positions of the light-transmitting member on the light-guiding space side, except for the light-transmitting part, are covered with the micro-foamed resin. It is also possible to have a composite structure of a lighting device and a wireless communication device covered with a sheet. In this case, it is desirable to have a structure in which the covering member is provided on the inner surface of the light-transmitting member and the covering member is directly covered with the micro-foamed resin sheet.
 前記光透過部材の一部が、着色塗料、金属蒸着、金属メッキ、所定厚さを有する光非透過性の着色樹脂のいずれかの前記被覆部材で被覆されているか、あるいは前記光透過部材の一部に前記光透過部材の代わりに被覆部材として所定厚さを有する光非透過性の着色樹脂が配置されている場合に、前記被覆部材で前記光透過部材が被覆されていない光透過部または前記着色樹脂が配置されていない光透過部から、光が取り出されてもよい。 A part of the light transmitting member is coated with the coating member selected from colored paint, metal vapor deposition, metal plating, or a non-light transmitting colored resin having a predetermined thickness, or one of the light transmitting members When a non-light transmitting colored resin having a predetermined thickness is disposed as a covering member in place of the light transmitting member in the light transmitting portion or the light transmitting member where the light transmitting member is not covered with the covering member. Light may be extracted from a light transmitting portion in which colored resin is not disposed.
 このように、被覆部材として所定厚さを有する光非透過性の着色樹脂を用いることで、被覆部材の配置や形状、厚さを変えることで、被覆した光透過部材の形状や厚さを任意に変更するように設計可能である。また、ここで、被覆部材や光透過部材の光透過部側の厚さを連続的に変更することで、照明装置の光取出し部側の形状に立体感を付与して意匠性を向上させることができる。このような光透過部材と被覆部材の被覆構造を実現するには射出成形などによる複合成形などを利用すればよい。また、被覆部材を着色塗料、金属蒸着、又は金属メッキにより薄膜状に形成すれば、薄膜状の質感を有する光透過部材を得ることができる。 In this way, by using a non-light-transmitting colored resin with a predetermined thickness as the covering member, the shape and thickness of the coated light-transmitting member can be changed as desired by changing the arrangement, shape, and thickness of the covering member. It can be designed to change to In addition, by continuously changing the thickness of the covering member or the light transmitting member on the light transmitting portion side, it is possible to give a three-dimensional effect to the shape of the light extraction portion of the lighting device and improve the design. I can do it. In order to realize such a covering structure of a light transmitting member and a covering member, composite molding such as injection molding may be used. Furthermore, if the covering member is formed into a thin film using colored paint, metal vapor deposition, or metal plating, a light transmitting member having a thin film-like texture can be obtained.
 前記光透過部材の所定位置に前記被覆部材が設けられ、前記被覆部材が前記光透過部材の裏面に露出して形成されている場合には、前記被覆部材の裏面に直接前記被覆部材と同一の大きさの前記マイクロ発泡樹脂シートが貼り付けられ、前記被覆部材が前記光透過部材の裏面に露出していない場合には、前記光透過部材の裏面の前記被覆部材に対応する位置に前記被覆部材と相似形状で少し大きさが小さいか、あるいは被覆部材と同一の大きさの前記マイクロ発泡樹脂シートが貼り付けられてもよい。 When the covering member is provided at a predetermined position of the light transmitting member and the covering member is formed to be exposed on the back surface of the light transmitting member, the same material as the covering member is directly applied to the back surface of the covering member. When the micro foamed resin sheet of the same size is attached and the covering member is not exposed on the back surface of the light transmitting member, the covering member is placed on the back surface of the light transmitting member at a position corresponding to the covering member. The micro-foamed resin sheet having a similar shape and slightly smaller size or the same size as the covering member may be attached.
 前記基板に配置された前記LED光源は、RGB光源、あるいは発光色をRGBに切り替え可能な1チップのLED光源、白色LED光源、昼光色のLED光源、蛍光体を利用した白色LED光源、白色または昼光色のLEDアレイ光源のいずれかあるいはこれらの光源を組み合わせたものであっても良い。 The LED light source arranged on the substrate is an RGB light source, a one-chip LED light source whose emission color can be switched to RGB, a white LED light source, a daylight LED light source, a white LED light source using a phosphor, white or daylight color. It may be one of the following LED array light sources or a combination of these light sources.
 前記光透過部材に設けられた前記被覆部材によって、前記光透過部が外周側と内周側に区分され、外周側と内周側の前記光透過部から略同一輝度の間接光が取出されてもよい。 The light transmitting portion is divided into an outer circumferential side and an inner circumferential side by the covering member provided on the light transmitting member, and indirect light having approximately the same brightness is extracted from the light transmitting portion on the outer circumferential side and the inner circumferential side. Good too.
 前記LED光源の配向角の範囲内に、前記光透過部材から光が透過する光透過部が含まれないような配置とすることで、前記光透過部材が平板状または凹凸構造を有する曲面状に形成され、前記導光空間の光透過部側の形状が平板状または凹凸構造を有する曲面状に形成されたとしても、前記導光空間内で反射光が拡散多重反射されることで、前記照明装置から取り出される光が略均一な間接光のみとすることができる。このように、導光空間の光透過部材側の形状を、凹凸構造を有する曲面形状にしても、光透過部からの光取出し位置に関係なく、光透過部から略同一輝度の間接光を取り出すことが可能な間接照明装置を実現できる。 By arranging the LED light source such that a light transmitting portion through which light is transmitted from the light transmitting member is not included within the orientation angle range of the LED light source, the light transmitting member may have a flat plate shape or a curved surface having an uneven structure. Even if the shape of the light-transmitting part side of the light-guiding space is formed into a flat plate shape or a curved surface having an uneven structure, the reflected light is diffused and multiple-reflected within the light-guiding space, so that the illumination The light extracted from the device can be only substantially uniform indirect light. In this way, even if the shape of the light-transmitting member side of the light-guiding space is a curved surface having an uneven structure, indirect light of approximately the same brightness can be taken out from the light-transmitting part regardless of the light extraction position from the light-transmitting part. It is possible to realize an indirect lighting device that can
 前記照明装置が、屋外用の照明装置であり、前記無線通信装置が公園、道路、ビルの壁面又は屋上に設置され、歩行者や道路を走行する車両との間で通信を行う無線通信機であってもよい。 The lighting device is an outdoor lighting device, and the wireless communication device is a wireless communication device that is installed on a park, a road, a wall or a rooftop of a building, and communicates with pedestrians and vehicles running on the road. There may be.
 前記無線通信装置が5G通信において使用される無線送信機であり、前記照明装置が広告用電子看板用照明装置あるいは案内用電子看板装置であってもよい。 The wireless communication device may be a wireless transmitter used in 5G communication, and the lighting device may be an advertising electronic signboard lighting device or a guidance electronic signboard device.
 前記照明装置が移動体に装着される照明装置であり、前記無線通信装置がミリ波レーダ用送信機であってもよい。また、前記移動体は、自力で自走する能力を持つ人工的な移動手段を言うが、例えば、この照明装置の使用目的は、電車、ドローン、ロボットの障害物検知のための周辺監視用または前方監視用レーダであってもよい。 The lighting device may be a lighting device mounted on a moving body, and the wireless communication device may be a millimeter wave radar transmitter. In addition, the above-mentioned moving object refers to an artificial means of transportation that has the ability to move on its own, and for example, the purpose of use of this lighting device is to monitor the surrounding area for detecting obstacles for trains, drones, and robots. It may also be a forward monitoring radar.
 前記マイクロ発泡樹脂シートは、波長450~650nmの可視光帯における硫酸バリウム標準板の拡散反射率を100%とすると、前記硫酸バリウム標準板に対する前記マイクロ発泡樹脂シートの拡散反射率が95%以上であり、波長70~100GHz帯における空気の電波吸収による電波減衰率に対する前記マイクロ発泡樹脂シートの電波減衰率が0から-0.15dBの範囲に含まれるPET樹脂シートあるいはPC樹脂シートであってもよい。 The micro-foamed resin sheet has a diffuse reflectance of 95% or more with respect to the barium sulfate standard plate, assuming that the diffuse reflectance of the barium sulfate standard plate in the visible light band of wavelengths from 450 to 650 nm is 100%. Yes, it may be a PET resin sheet or a PC resin sheet in which the radio wave attenuation rate of the micro-foamed resin sheet is within the range of 0 to -0.15 dB relative to the radio wave attenuation rate due to radio wave absorption by air in the wavelength band of 70 to 100 GHz. .
 第2の発明は、マイクロ発泡樹脂シートを用いた無線通信装置の前方に照明装置が配置される照明装置と無線通信装置との複合構造における照明装置と無線通信装置の配置方法であって、前記照明装置は、LED光源と、前記LED光源を支持する基板と、光透過部材と、光透過部材の外周部を支持する枠部材と、光拡散反射性のマイクロ発泡樹脂シートと、を有し、前記LED光源の発光面から出射される光が前記マイクロ発泡樹脂シートにより反射されるように、前記マイクロ発泡樹脂シートの断面形状が窪み状の凹形状に成形されることで、前記マイクロ発泡樹脂シートと前記光透過部材との間に導光空間が形成されるように、前記LED光源の発光面が前記マイクロ発泡樹脂シートに対向するように前記光透過部材と反対方向に向けて配置され、前記無線通信装置は、前記マイクロ発泡樹脂シートの光反射面の背面側に配置され、前記無線通信装置の前方に配置された前記マイクロ発泡樹脂シートが、前記照明装置の筐体の一部として前記無線通信装置の電波放射面に接触するように配置されるか、前記無線通信装置の電波放射面から所定距離離間して配置され、前記無線通信装置の前方の電波放射面の前方には、前記光透過部材のみが配置されるか、あるいは前記光透過部材と前記マイクロ発泡樹脂シートが配置されるかのいずれかであり、前記マイクロ発泡樹脂シートは、光拡散反射率に優れると同時に、前記基板や前記光透過部材と比較して比誘電率が1.8以下と低い電波透過性に優れるマイクロ発泡樹脂シートからなる材料が光反射板として用いられることを特徴とする照明装置と無線通信装置の配置方法とすることもできる。 A second invention is a method for arranging a lighting device and a wireless communication device in a composite structure of a lighting device and a wireless communication device, in which the lighting device is placed in front of a wireless communication device using a micro-foamed resin sheet, The lighting device includes an LED light source, a substrate that supports the LED light source, a light transmitting member, a frame member that supports the outer periphery of the light transmitting member, and a light diffusing and reflecting microfoamed resin sheet, The micro-foamed resin sheet is formed so that the cross-sectional shape of the micro-foamed resin sheet has a concave shape so that the light emitted from the light emitting surface of the LED light source is reflected by the micro-foamed resin sheet. and the light transmitting member, the light emitting surface of the LED light source is arranged to face the micro foam resin sheet in a direction opposite to the light transmitting member, and The wireless communication device is arranged on the back side of the light-reflecting surface of the micro-foamed resin sheet, and the micro-foamed resin sheet arranged in front of the wireless communication device serves as a part of the casing of the lighting device. The light emitting surface is arranged so as to be in contact with the radio wave emitting surface of the communication device, or is arranged at a predetermined distance from the radio wave emitting surface of the wireless communication device, and the light beam is disposed in front of the radio wave emitting surface in front of the wireless communication device. Either only the transmitting member is disposed, or the light transmitting member and the micro foam resin sheet are disposed. Arrangement of a lighting device and a wireless communication device, characterized in that a material made of a micro-foamed resin sheet, which has excellent radio wave transparency and has a relative permittivity of 1.8 or less compared to the light-transmitting member, is used as a light reflecting plate. It can also be a method.
 また、第2の発明の照明装置と無線通信装置の配置方法において、前記マイクロ発泡樹脂シートが加熱成形により窪み状の凹形状に形成されたもので、断面視形状が窪み状の凹形状の中央部に平坦部を含む略U字型や逆台形状、おわん型のいずれかの形状に成形した成形体であってもよい。また、前記マイクロ発泡樹脂シートの成形体の形状としては、全体として窪み状の凹形状に形成されたものであれば、一部に突形状部を含んでもよい。このような形状とすることで、照明装置に対して、マイクロ発泡樹脂シートが反射板として拡散反射性を付与することで間接照明を実現すると同時に、マイクロ発泡樹脂シートが筐体を兼ねることで別途筐体を設けることが不要になる。 Further, in the method for arranging a lighting device and a wireless communication device according to a second aspect of the invention, the micro-foamed resin sheet is formed into a concave shape by heat molding, and the cross-sectional shape is at the center of the concave shape. The molded article may be formed into a substantially U-shape, an inverted trapezoid shape, or a bowl shape, including a flat portion. Moreover, as for the shape of the molded body of the micro-foamed resin sheet, as long as it is formed in a concave shape as a whole, it may include a protrusion in a part. With this shape, the micro-foamed resin sheet acts as a reflector and provides diffuse reflection properties to the lighting device, providing indirect illumination.At the same time, the micro-foamed resin sheet also serves as a casing, allowing for additional lighting. It becomes unnecessary to provide a housing.
 また、第3の発明の照明装置と無線通信装置との複合構造における照明装置と無線通信装置の配置方法により、照明装置と無線通信装置との複合構造に部材を配置することで、拡散反射特性に優れると同時に電波の透過損失及び散乱損失に優れる照明装置付き無線通信装置を得ることができる。 Further, according to the method of arranging the lighting device and the wireless communication device in the composite structure of the lighting device and the wireless communication device of the third invention, by arranging the members in the composite structure of the lighting device and the wireless communication device, the diffuse reflection property can be improved. It is possible to obtain a wireless communication device with an illumination device that is excellent in transmission loss and scattering loss of radio waves.
 また、無線通信装置としては、照明装置が無線通信装置の前方に配置されたとしても、電波を吸収する筐体が無線通信装置の前方に存在せずにマイクロ発泡樹脂シートが無線通信装置の前方に存在するだけであるから、電波吸収が少ない無線通信装置を得ることができる。また、前記マイクロ発泡樹脂シートにより無線通信装置の表面を保護する保護効果を得ることができる。この際、LED光源は、マイクロ発泡樹脂シートの成形体の外周部側面の内周面に配置され、その発光面が成形体の対向する外周部側面の内周面に向き合うような配置も可能である。ここでは、マイクロ発泡樹脂シートは円筒状に成形され、前記LED光源は円筒の円周面の内周面に相互に対向するように取り付けられることが望ましい。 Furthermore, even if the lighting device is placed in front of the wireless communication device, the casing that absorbs radio waves does not exist in front of the wireless communication device, and the micro foam resin sheet is placed in front of the wireless communication device. Therefore, it is possible to obtain a wireless communication device with less radio wave absorption. Furthermore, the micro-foamed resin sheet can provide a protective effect of protecting the surface of the wireless communication device. At this time, the LED light source is arranged on the inner peripheral surface of the outer peripheral side of the molded body of the micro-foamed resin sheet, and it is also possible to arrange the LED light source so that its light emitting surface faces the inner peripheral surface of the opposite outer peripheral side of the molded body. be. Here, the micro-foamed resin sheet is preferably formed into a cylindrical shape, and the LED light sources are preferably attached to the inner peripheral surface of the circumferential surface of the cylinder so as to face each other.
 本発明によれば、光反射性のマイクロ発泡樹脂シートにより導光空間を形成して、LED光源からの光を導光空間内でマイクロ発泡樹脂シートにより多重拡散反射させることで、照明装置の光透過部材から取り出す光の輝度を均一にすることができる。この際、電波吸収性が高い基板やLED光源などが導光空間の外周に配置されるため、LED光源からの光や無線通信装置の電波が基板等により遮蔽されることがなく、光反射の障害や無線通信装置から放射される電波の障害となることがない。 According to the present invention, the light guide space is formed using a light-reflective micro-foamed resin sheet, and the light from the LED light source is multiplexed and diffusely reflected by the micro-foamed resin sheet within the light guide space. The brightness of light extracted from the transparent member can be made uniform. At this time, since a board with high radio wave absorption, an LED light source, etc. are placed around the outer periphery of the light guide space, the light from the LED light source and the radio waves from the wireless communication device are not blocked by the board, etc., and light reflection is prevented. There will be no interference or interference with radio waves emitted from wireless communication devices.
 また、照明装置と無線通信装置が複合化されているため、無線通信装置から放射される電波は、光反射性のマイクロ発泡樹脂シートを透過する必要があるが、マイクロ発泡樹脂シートの比誘電率が低いため、電波がマイクロ発泡樹脂シートを透過する際における電波の透過損失が少ない。また、照明装置が無線通信装置の前方に配置されるため、照明装置と無線通信装置の複合構造の小型化が可能である。 In addition, since the lighting device and wireless communication device are combined, the radio waves emitted from the wireless communication device need to pass through a light-reflective micro-foamed resin sheet, but the dielectric constant of the micro-foamed resin sheet Since the transmission loss is low, there is little transmission loss of radio waves when they pass through the micro-foamed resin sheet. Furthermore, since the lighting device is placed in front of the wireless communication device, it is possible to downsize the combined structure of the lighting device and the wireless communication device.
 また、導光空間を形成するマイクロ発泡樹脂シートが、照明装置の筐体の一部を兼ねることで、照明装置を無線通信装置の前方に配置しても別途照明装置の筐体を設ける必要がない。また、無線通信装置の前方に配置される照明装置に別途の筐体を設けないため、照明装置の筐体による電波の吸収反射損失を防止することができる。 In addition, since the micro-foamed resin sheet that forms the light guide space also serves as a part of the casing of the lighting device, there is no need to provide a separate casing for the lighting device even if the lighting device is placed in front of the wireless communication device. do not have. Further, since a separate casing is not provided for the lighting device disposed in front of the wireless communication device, absorption and reflection loss of radio waves due to the casing of the lighting device can be prevented.
 さらに、マイクロ発泡樹脂シートが無線通信装置の表面に接触するように配置される場合や、例えば5mm以下離間して配置される場合には、外部から応力が作用した場合であっても、発泡体であるマイクロ発泡樹脂シートが無線通信装置の表面を保護することができ、無線通信装置の表面保護効果がある。 Furthermore, if the micro foam resin sheet is placed in contact with the surface of the wireless communication device, or if it is placed at a distance of 5 mm or less from the surface of the wireless communication device, the foam may The micro-foamed resin sheet can protect the surface of the wireless communication device, and has the effect of protecting the surface of the wireless communication device.
 また、マイクロ発泡樹脂シートの比誘電率が1.8以下であれば、電波がマイクロ発泡樹脂シートを透過する際における電波の透過損失をより確実に抑制することができる。例えば、通常の透明樹脂の比誘電率は2.0を超えるのに対して、マイクロ発泡樹脂シートの比誘電率は低いため、電波透過時の反射吸収散乱等のロスが少ない。マイクロ発泡樹脂シートの比誘電率は、1.50以下であることが望ましい Furthermore, if the dielectric constant of the micro-foamed resin sheet is 1.8 or less, transmission loss of radio waves when the radio waves are transmitted through the micro-foamed resin sheet can be suppressed more reliably. For example, while the dielectric constant of a normal transparent resin exceeds 2.0, the dielectric constant of a micro-foamed resin sheet is low, so there is little loss such as reflection, absorption, and scattering when transmitting radio waves. The dielectric constant of the micro foamed resin sheet is preferably 1.50 or less.
 また、光透過部材として、透明な光透過部材だけでなく、半透明な光透過部材、または透明樹脂または透明ガラスの表面に半透明な樹脂フィルムを張り付けた半透明積層体などを用いることができる。このようにすることで、より複雑で高級感のある色彩表現が可能になる。光透過部材としてはガラスと樹脂のいずれも用いることができるが、一般的に比誘電率を低くする点では、ガラスより樹脂を用いることが望ましい。 Furthermore, as the light-transmitting member, not only a transparent light-transmitting member but also a translucent light-transmitting member or a translucent laminate in which a translucent resin film is attached to the surface of a transparent resin or transparent glass can be used. . By doing so, it becomes possible to express colors with a more complex and luxurious feel. Although both glass and resin can be used as the light transmitting member, it is generally preferable to use resin rather than glass in terms of lowering the dielectric constant.
 また、光透過部材を被覆する被覆部材又は着色樹脂を設けることで、照明装置にデザイン性を付与することができ、デザイン性に優れた照明装置を得ることができる。特に図示しないが、光透過部材の表面を平面的に記載したが、凹凸構造を有する射出成形などにより立体形状に形成することができる。 Furthermore, by providing a coating member or a colored resin that covers the light-transmitting member, design can be imparted to the lighting device, and a lighting device with excellent design can be obtained. Although not particularly shown in the drawings, although the surface of the light transmitting member is described as two-dimensional, it can be formed into a three-dimensional shape by injection molding or the like having an uneven structure.
 また、光取出し部材の一部を被覆する被覆部材に対応する位置にマイクロ発泡樹脂シートを貼り付けることで、導光空間における拡散反射性をさらに向上させることができる。このため、光取出し部から取り出す光の輝度を向上させることができる。この際、マイクロ発泡樹脂シートを被覆部材が形成されていない位置に貼り付けると、光透過部材の外部からマイクロ発泡樹脂シートが直接視認され意匠性が低下するが、被覆部材に重ねることで、光透過部材の外部からマイクロ発泡樹脂シートが視認されず、意匠性を高めることができる。 Furthermore, by attaching a micro-foamed resin sheet to a position corresponding to the covering member that covers a part of the light extraction member, the diffuse reflection properties in the light guide space can be further improved. Therefore, the brightness of the light extracted from the light extraction section can be improved. At this time, if the micro-foamed resin sheet is pasted in a position where no covering member is formed, the micro-foamed resin sheet will be directly visible from the outside of the light-transmitting member, reducing the design. The micro-foamed resin sheet is not visible from the outside of the transparent member, and the design can be improved.
 このように、光透過部材を被覆する光非透過性の被覆部材又は着色樹脂を設けることで、被覆部材又は着色樹脂以外の光透過部からのみ光を取り出すことができるため、照明装置にデザイン性を付与することができる。 In this way, by providing a non-light-transmissive coating member or colored resin to cover the light-transmitting member, light can be extracted only from the light-transmitting parts other than the coating member or colored resin, which improves the design of the lighting device. can be granted.
 また、複数種類のLED光源を使用することで、異なる色の光を切り替えることや、異なる色の光を同時に点灯することができる。このため、発光色の切り替えによる調色や、異なる色の加法混色による調色を行うことができる。また、LEDアレイ光源など、LED光源を複数列配置すれば、照明装置を大きくすることが可能になる。 Additionally, by using multiple types of LED light sources, it is possible to switch between different colors of light or turn on different colors of light at the same time. Therefore, color toning can be performed by switching the emitted light color or by additively mixing different colors. Further, by arranging multiple rows of LED light sources such as LED array light sources, it is possible to increase the size of the lighting device.
 また、LED光源の配向角の範囲内に、光透過部材の光透過部が含まれないようにすることで、光透過部材が平板状または凹凸構造を有する曲面状に形成され、導光空間の光透過部側の形状が平板状または凹凸構造を有する曲面状に形成されたとしても、導光空間内で反射光が拡散多重反射されることで、照明装置から取り出される光を略均一な間接光のみとすることができる。このため、直接光によるグレア感を低減することができる。 Furthermore, by making sure that the light transmitting part of the light transmitting member is not included within the range of the orientation angle of the LED light source, the light transmitting member is formed into a flat plate shape or a curved surface having an uneven structure, and the light guiding space is Even if the shape of the light transmitting part is formed into a flat plate or a curved surface having an uneven structure, the reflected light is diffused and multiple reflected within the light guiding space, so that the light taken out from the lighting device is almost uniformly indirect. It can be only light. Therefore, the glare caused by direct light can be reduced.
 また、光透過部材に設けられた被覆部材によって、光透過部を外周側と内周側に区分することで、被覆部材の外周側と内周側の光透過部から略同一輝度で間接光を取出すことができる。例えば、大型の電子看板などに内周側と外周側とが区切られるようなロゴマークを設けたと場合に、ロゴマークの内周側と外周側ともに均等な輝度の光を取り出すことができる。大型の照明装置に本発明を適用する場合には、LED光源を、基板上に格子状、千鳥格子状、アレイ状に配置した集合光源を使用するのが望ましく、無線通信装置は複数隣接して配置してもよい。 In addition, by dividing the light transmitting part into the outer circumferential side and the inner circumferential side by the covering member provided on the light transmitting member, indirect light can be emitted with approximately the same brightness from the light transmitting part on the outer circumferential side and the inner circumferential side of the covering member. It can be taken out. For example, when a large electronic signboard or the like is provided with a logo mark that is divided into an inner circumferential side and an outer circumferential side, light of equal brightness can be extracted from both the inner circumferential side and the outer circumferential side of the logo mark. When applying the present invention to a large-sized lighting device, it is preferable to use a collective light source in which LED light sources are arranged in a grid, houndstooth, or array on a board, and a plurality of wireless communication devices are arranged adjacent to each other. It may also be placed.
 また、屋外用の照明装置に無線送信機を併設し、公園や道路、ビルの壁面や屋上などに設置することで、歩行者や自動車との通信を行うのに適した無線通信機であってもよい。例えば、屋外用照明装置に無線送信機を併設し、歩行者や自動車との交信を無線送信機により行うようにすれば、歩行者や自動車との間に障害物がないので、歩行者等室外にいる人や道路上を走行する自動車との通信を行うのに適している。 In addition, by attaching a wireless transmitter to an outdoor lighting device and installing it in parks, roads, walls or rooftops of buildings, it is a wireless communication device suitable for communicating with pedestrians and cars. Good too. For example, if a wireless transmitter is attached to an outdoor lighting device and the wireless transmitter is used to communicate with pedestrians and cars, there will be no obstacles between pedestrians and cars, so pedestrians and other people can It is suitable for communicating with people in the street and cars driving on the road.
 また、5G通信において使用される無線通信装置は、通信の安定化のためにスモールセルの構築が不可避であり、通常、建物の屋上や壁面などに設置されるが、広告用電子看板用照明装置等に適用することで、設置場所の制約が少なく、設置場所を確保することが容易である。 In addition, wireless communication equipment used in 5G communication requires the construction of small cells to stabilize communication, and is usually installed on the roof or wall of a building, but lighting equipment for electronic billboards for advertising By applying it to such places, there are fewer restrictions on the installation location, and it is easy to secure the installation location.
 また、移動体に無線通信装置を併設する場合には、電車、ドローン、ロボットなどの移動体の安全確保のための障害物検知の無線通信装置と照明装置との複合構造とすることができる。ここで、移動体用の無線通信装置は、周辺監視用または前方監視用レーダと照明装置との複合構造とすることができる。 In addition, when a wireless communication device is attached to a moving object, it can be a composite structure of a wireless communication device for detecting obstacles and a lighting device to ensure the safety of moving objects such as trains, drones, and robots. Here, the wireless communication device for a mobile object can have a composite structure of a peripheral monitoring or forward monitoring radar and a lighting device.
 また、波長70~100GHz帯における空気の電波吸収による電波減衰率に対するマイクロ発泡樹脂シートの電波減衰率の変化率が、0から-0.15dBの範囲に含まれるものであり、前述したように、無線通信装置の前方に配置されたマイクロ発泡樹脂シートでの電波の吸収をより確実に抑制することができる。 In addition, the rate of change in the radio wave attenuation rate of the micro-foamed resin sheet with respect to the radio wave attenuation rate due to radio wave absorption in the air in the wavelength band of 70 to 100 GHz is within the range of 0 to -0.15 dB, and as described above, It is possible to more reliably suppress the absorption of radio waves by the micro-foamed resin sheet placed in front of the wireless communication device.
 本発明によれば、無線通信装置からの電波の損失が小さく、均一な輝度の光を取り出すことが可能な照明装置と無線通信装置の複合構造及び照明装置と無線通信装置の配置方法並びに当該配置方法で配置した照明装置付き無線通信装置を提供することができる。 According to the present invention, a composite structure of a lighting device and a wireless communication device that can extract light of uniform brightness with little loss of radio waves from a wireless communication device, a method of arranging the lighting device and a wireless communication device, and the arrangement. A wireless communication device with a lighting device arranged in a method can be provided.
複合構造1を示す平面図。FIG. 2 is a plan view showing the composite structure 1. FIG. 図1のA-A線断面図。FIG. 2 is a sectional view taken along line AA in FIG. 1. 図1のB-B線断面図。A sectional view taken along the line BB in FIG. 1. LED光源13近傍の拡大図。An enlarged view of the vicinity of the LED light source 13. 複合構造1aを示す断面図。A sectional view showing a composite structure 1a. 複合構造1bを示す断面図。A cross-sectional view showing the composite structure 1b. 図5Aの部分拡大図。A partially enlarged view of FIG. 5A. 複合構造1cを示す断面図。A sectional view showing a composite structure 1c. 複合構造1dを示す断面図。A sectional view showing a composite structure 1d. 複合構造1eを示す断面図。A sectional view showing a composite structure 1e. 複合構造1fを示す断面図。A sectional view showing a composite structure 1f. 複合構造1gを示す断面図。A sectional view showing a composite structure 1g.
(第1の実施形態)
 以下、図面を参照しながら、本発明の実施形態について説明する。図1は照明装置と無線通信装置との複合構造1を示す平面図であり、図2Aは、図1のA-A線断面図、図2Bは、図1のB-B線断面図である。なお、以下の説明において配線等は図示を省略する。
(First embodiment)
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a composite structure 1 of a lighting device and a wireless communication device, FIG. 2A is a sectional view taken along the line AA in FIG. 1, and FIG. 2B is a sectional view taken along the line BB in FIG. . Note that in the following description, illustrations of wiring and the like will be omitted.
 図2A、図2Bに示すように、複合構造1は、照明装置3と無線通信装置17とが一体化して複合化された構造である。照明装置3は、主に、LED光源13と、LED光源13を支持する基板11と、光透過部材7と、光透過部材の外周部を支持する枠部材5と、光拡散反射性のマイクロ発泡樹脂シート15等から構成される。
 ここで、図2Bでは、照明装置3と無線通信装置17とが一体化されて複合化されているが、一体化させてなくとも、照明装置3と無線通信装置17とが接触配置されているか、所定距離の範囲内に両者別体で配置されていてもよい。
As shown in FIGS. 2A and 2B, the composite structure 1 is a composite structure in which the lighting device 3 and the wireless communication device 17 are integrated. The lighting device 3 mainly includes an LED light source 13, a substrate 11 that supports the LED light source 13, a light transmitting member 7, a frame member 5 that supports the outer periphery of the light transmitting member, and a light diffusing and reflecting micro-foamed member. It is composed of a resin sheet 15 and the like.
Here, in FIG. 2B, the lighting device 3 and the wireless communication device 17 are integrated and combined, but even if they are not integrated, the lighting device 3 and the wireless communication device 17 may be placed in contact with each other. , and may be arranged separately within a predetermined distance.
 なお、複合構造1(照明装置3)の平面視の輪郭形状は、略円形、略楕円形、略長円形、略三角形、略矩形、略多角形や略H形など、後述する導光空間の拡散反射性を損なわない形状であれば、任意の形状であってもよい。特に、略多角形の場合には、意匠性の点で長軸短軸を有する偶数辺多角形が望ましい。 Note that the contour shape of the composite structure 1 (illumination device 3) in plan view may be approximately circular, approximately elliptical, approximately oval, approximately triangular, approximately rectangular, approximately polygonal, approximately H-shaped, etc. of the light guide space described later. It may have any shape as long as it does not impair the diffuse reflectance. In particular, in the case of a substantially polygonal shape, an even-numbered polygon having major and minor axes is desirable from the viewpoint of design.
 ここで、本発明の複合構造1(照明装置3)の場合、照明装置の輝度の点では、全周に配置された基板11上の全周にLED光源13を配置するのが望ましいが、いずれの実施形態の場合においても、全周に配置された基板11上の一部または全周にLED光源13を配置してもよいし、外周の一部に配置された基板11上に、基板全体に渡ってLED光源13を配置してもよいものとする。これらの基板11とLED光源13の配置関係は、照明装置の設計に応じて適宜決定すればよい。 Here, in the case of the composite structure 1 (illumination device 3) of the present invention, from the point of view of the luminance of the illumination device, it is desirable to arrange the LED light sources 13 all around the substrate 11 arranged around the entire circumference. Even in the case of the embodiment, the LED light source 13 may be arranged on a part or the entire circumference of the substrate 11 arranged on the entire circumference, or the LED light source 13 may be arranged on the substrate 11 arranged on a part of the outer periphery. The LED light source 13 may be arranged over the entire area. The arrangement relationship between these substrates 11 and the LED light sources 13 may be determined as appropriate depending on the design of the lighting device.
 マイクロ発泡樹脂シート15は、加熱成形や、折り曲げ加工その他の加熱を行わない成形加工によって、断面形状が窪み状の凹形状を形成するように成形されたものである。加熱成形としては、プレス成形、真空成形、圧空成形、真空圧空成形、上下金型を使用するマッチモールド成形のいずれの成形でもよい。ここで、マイクロ発泡樹脂シートは、平面視形状は拡散反射性を損なわない限り、任意の形状でよいが、マイクロ発泡樹脂シートの保護効果を考えると、マイクロ発泡樹脂シートの断面視形状は、窪み状の凹形状の中央部に平坦部を有する略U字型や逆台形状、おわん型が望ましい。上記のように、マイクロ発泡樹脂シート15は微細気泡構造を有しているため、仮にシートを種々の成形法により、成形したとしても気泡構造が通常大きく変わらない限り、成形前後の拡散反射反射や比誘電率に基づく電波の透過損失および電波の散乱損失はほぼ同様であるという特徴を有している。 The micro-foamed resin sheet 15 is formed to have a concave cross-sectional shape by heat molding, bending, or other molding processes that do not involve heating. The heat forming may be any of press forming, vacuum forming, pressure forming, vacuum pressure forming, and match molding using upper and lower molds. Here, the shape of the micro-foamed resin sheet in plan view may be any shape as long as it does not impair the diffuse reflection properties, but considering the protective effect of the micro-foamed resin sheet, the cross-sectional shape of the micro-foamed resin sheet should be a concave shape. A substantially U-shape, an inverted trapezoid shape, or a bowl-shape is desirable, having a flat part in the center of a concave shape. As mentioned above, the micro-foamed resin sheet 15 has a fine cell structure, so even if the sheet is molded using various molding methods, as long as the cell structure does not change significantly, diffuse reflection and reflection before and after molding will occur. It has a characteristic that the transmission loss of radio waves and the scattering loss of radio waves based on the relative dielectric constant are almost the same.
 マイクロ発泡樹脂シート15は、例えば、PET樹脂シートあるいはPC樹脂シートである。マイクロ発泡樹脂シート15は、波長450~650nmの可視光帯における硫酸バリウム標準板の拡散反射率を100%とすると、硫酸バリウム標準板に対するマイクロ発泡樹脂シート15の拡散反射率が95%以上、より望ましいく96%以上、さらに望ましくは98%以上であり、比誘電率が1.8以下となるようなマイクロ発泡樹脂シートである。拡散反射率が高いほど、多重反射後にもより高い輝度を得ることができる。すなわち、マイクロ発泡樹脂シート15は、光拡散反射率に優れると同時に、基板や光透過部材と比較して比誘電率が1.8以下と低い電波透過性に優れる材料であり、光反射板として用いられる。 The micro-foamed resin sheet 15 is, for example, a PET resin sheet or a PC resin sheet. If the diffuse reflectance of the barium sulfate standard plate in the visible light band of wavelengths 450 to 650 nm is 100%, the micro foam resin sheet 15 has a diffuse reflectance of 95% or more with respect to the barium sulfate standard plate. The micro-foamed resin sheet has a specific dielectric constant of desirably 96% or more, more desirably 98% or more, and 1.8 or less. The higher the diffuse reflectance, the higher the brightness can be obtained even after multiple reflections. In other words, the micro-foamed resin sheet 15 is a material that has excellent light diffusing reflectance and, at the same time, excellent radio wave transmittance with a relative dielectric constant of 1.8 or less compared to a substrate or a light transmitting member, and can be used as a light reflecting plate. used.
 本発明では、マイクロ発泡樹脂シートの比誘電率の測定は、ASTM D2520およびJIS C2565に規定される方法を用いて、測定周波数2GHzにて、長さ78mm×幅2.4mm×板厚1mm(発泡倍率4倍)の試料を使用して測定を行った。 In the present invention, the dielectric constant of the micro-foamed resin sheet is measured using the method specified in ASTM D2520 and JIS C2565 at a measurement frequency of 2 GHz on a sheet of 78 mm long x 2.4 mm wide x 1 mm thick (foamed resin sheet). The measurement was performed using a sample with a magnification of 4 times.
 なお、通常の非発泡材のPET樹脂、PC樹脂の比誘電率は2.9~3.0であるが、PET樹脂発泡体、PC樹脂発泡体、特に、これらのマイクロ発泡樹脂発泡体の比誘電率はともに、1.8以下、さらには1.5以下とすることもできる。このように、通常の透明樹脂の比誘電率が2.0を超えるのに対して、発泡体の比誘電率は低いため、電波が透過する際の反射吸収散乱等の損失を小さくすることができる。例えば、実際の測定値を示すと、PET樹脂のマイクロ発泡樹脂シートの比誘電率の測定結果は、1.31,tanδ(Tangent Delta)は0.0020であり、PC樹脂のマイクロ発泡樹脂シート比誘電率は、1.39,tanδは0.0022であり、PET樹脂、PC樹脂の場合ともに、比誘電率は、1.50以下となっており、さらにtanδも0.0022以下を満足するため、電波の熱損失も少ないことが分かる。また、別途記載するように、通常の発泡体に比べて、微細の気泡構造を有するため、電波透過時の散乱損失も少ないという特徴がある。 Note that the dielectric constant of ordinary non-foamed materials such as PET resin and PC resin is 2.9 to 3.0, but the ratio of PET resin foam, PC resin foam, and especially these micro-foamed resin foams is 2.9 to 3.0. Both dielectric constants can be 1.8 or less, or even 1.5 or less. In this way, while the dielectric constant of ordinary transparent resin exceeds 2.0, the dielectric constant of foam is low, so it is possible to reduce losses such as reflection, absorption, and scattering when radio waves are transmitted. can. For example, to show actual measured values, the measurement result of the dielectric constant of the micro-foamed resin sheet of PET resin is 1.31, tan δ (Tangent Delta) is 0.0020, and the dielectric constant of the micro-foamed resin sheet of PC resin is 1.31. is 1.39, tan δ is 0.0022, and the relative permittivity of both PET resin and PC resin is 1.50 or less, and tan δ also satisfies 0.0022 or less, so the heat loss of radio waves is also reduced. It turns out that there are few. In addition, as described separately, since it has a fine cell structure compared to ordinary foam, it has a characteristic that scattering loss when transmitting radio waves is small.
 上記に加え、電波吸収損失の評価を、Sパラメーター法により行った。すなわち、2つのホーンアンテナを所定距離400mm離間して対向配置し、その間の空間の所定位置に寸法210mm×297mm×板厚1mmのマイクロ発泡樹脂シートを配置した時のアンテナ間の受信レベルを透過損失として評価した。なお、マイクロ発泡樹脂シートを配置しない場合の両アンテナ間の透過損失を0dBとした。電波吸収損失の評価は70~100GHzの周波数帯域における吸収損失を、ネットワークアナライザ(KEYSIGHT社製型番N5291A)を用いてSパラメーターのS21から得た。 In addition to the above, radio wave absorption loss was evaluated using the S-parameter method. In other words, when two horn antennas are placed facing each other with a predetermined distance of 400 mm, and a micro foam resin sheet with dimensions of 210 mm x 297 mm x 1 mm in thickness is placed in a predetermined position in the space between them, the transmission loss is the reception level between the antennas. It was evaluated as Note that the transmission loss between both antennas when no microfoamed resin sheet is disposed was set to 0 dB. For evaluation of radio wave absorption loss, the absorption loss in the frequency band of 70 to 100 GHz was obtained from S21 of the S parameter using a network analyzer (model number N5291A manufactured by KEYSIGHT).
 ここで、波長70~100GHz帯における空気の電波吸収による電波減衰率に対するPET樹脂とPC樹脂のマイクロ発泡樹脂シートの電波減衰率の変化率が、0から-0.15dBの範囲に含まれることが望ましい。このように電波減衰率を空気の場合より最大でも3.5%大きくなる程度に抑制することで、マイクロ発泡樹脂シート15の背面に配置される無線通信装置17から放射される電波が透過する際の損失を低減することができる。 Here, the rate of change in the radio wave attenuation rate of the micro-foamed resin sheet of PET resin and PC resin with respect to the radio wave attenuation rate due to radio wave absorption in the air in the wavelength band of 70 to 100 GHz is within the range of 0 to -0.15 dB. desirable. By suppressing the radio wave attenuation rate to a maximum of 3.5% greater than that of air, the radio waves emitted from the wireless communication device 17 disposed on the back surface of the micro foam resin sheet 15 are transmitted. loss can be reduced.
 なお、マイクロ発泡樹脂シート15は、例えば、平均気泡径が0.2μmから10μmの範囲であることが好ましい。平均気泡径が0.2μmより小さすぎると、光の透過度が高くなり反射率が低下する。また、平均気泡径が大きすぎると拡散反射率が低下するため、平均気泡径は0.2μm以上10μm以下であることが望ましい。無線通信装置の前方に配置されたマイクロ発泡樹脂シート15が、平均気泡径が0.2~10μmであるため、拡散反射特性と誘電特性に優れ、電波透過損失が少ないだけでなく、電波の散乱損失も少ない。 Note that the micro-foamed resin sheet 15 preferably has an average cell diameter in the range of 0.2 μm to 10 μm, for example. If the average bubble diameter is too small than 0.2 μm, the light transmittance will increase and the reflectance will decrease. Further, if the average bubble diameter is too large, the diffuse reflectance decreases, so it is desirable that the average bubble diameter is 0.2 μm or more and 10 μm or less. The micro-foamed resin sheet 15 placed in front of the wireless communication device has an average bubble diameter of 0.2 to 10 μm, so it has excellent diffuse reflection properties and dielectric properties, and not only has little radio wave transmission loss, but also has low radio wave scattering. There are also fewer losses.
 マイクロ発泡樹脂シート15による散乱損失について考えてみる。本発明では、マイクロ発泡樹脂シート15は無線通信装置17の前面に配置されることから、無線通信装置17から放射される電波の透過損失だけでなく、散乱損失についても、その影響を考慮する必要がある。 Let's consider the scattering loss caused by the micro-foamed resin sheet 15. In the present invention, since the micro-foamed resin sheet 15 is placed in front of the wireless communication device 17, it is necessary to consider not only the transmission loss but also the scattering loss of radio waves emitted from the wireless communication device 17. There is.
 ここで、使用する電波の波長を例えば、100GHzとすると、波長は約3mmとなる。ここで、本発明の発泡体は、気泡径が0.2~10μmと前記電波の波長に対して気泡径が数百分の一程度と十分に小さいので、マイクロ発泡樹脂シート透過時に、気泡による散乱を受けにくいが、通常の発泡体を用いる場合には、気泡径が100μm~300μmであり、ミリ波帯の電波の波長約3mmに対して、十分の一(1/10)~数十分の一と波長が比較的大きいことから、気泡自体が電波の散乱要因となる。以上のように、マイクロ発泡樹脂シート15は、電波の透過損失だけでなく、散乱損失も低減する効果がある。 Here, if the wavelength of the radio waves used is, for example, 100 GHz, the wavelength will be approximately 3 mm. Here, the foam of the present invention has a bubble diameter of 0.2 to 10 μm, which is a sufficiently small diameter of several hundredths of the wavelength of the radio waves, so that when the foam passes through the microfoamed resin sheet, Although it is less susceptible to scattering, when using ordinary foam, the bubble diameter is 100 μm to 300 μm, which is one tenth (1/10) to several tens of minutes compared to the wavelength of approximately 3 mm of millimeter wave radio waves. Since the wavelength is relatively large, the bubbles themselves become a cause of radio wave scattering. As described above, the microfoamed resin sheet 15 has the effect of reducing not only the transmission loss of radio waves but also the scattering loss.
 窪み状の凹形状に成形されたマイクロ発泡樹脂シート15の開口部側には、光透過部材7が配置される。光透過部材7は、枠部材5によってマイクロ発泡樹脂シート15の開口部縁部に固定される。なお、光透過部材7は平板状であるが、光透過部材7の前面は、平面形状でなくてもよい。例えば、光透過部材7の中央部が前方に突出する形状など、多少の凹凸形状を有していてもよい。 A light transmitting member 7 is arranged on the opening side of the micro-foamed resin sheet 15 formed into a concave shape. The light transmitting member 7 is fixed to the opening edge of the micro foam resin sheet 15 by the frame member 5. Note that although the light transmitting member 7 has a flat plate shape, the front surface of the light transmitting member 7 does not have to have a flat shape. For example, the light transmitting member 7 may have a somewhat uneven shape, such as a shape in which the central portion thereof protrudes forward.
 光透過部材7は、例えば、PC樹脂、ABS樹脂、PET樹脂、塩化ビニル樹脂、PMMA樹脂などのアクリル樹脂、ポリスチレン樹脂、COP樹脂、COC樹脂のいずれかの光透過性の透明樹脂又は透明ガラスが適用可能である。また、光透過部材7は、透明樹脂に顔料を添加した半透明樹脂であってもよい。また、光透過部材7は、透明樹脂の光取出し部側の表面を粗面化または微小な凹凸構造を形成することで半透明化した半透明樹脂であってもよい。また、光透過部材7は、透明樹脂または透明ガラスの表面に半透明な樹脂フィルムを貼り付けた半透明積層体であってもよく、あるいは半透明な着色ガラスであってもよい。 The light transmitting member 7 is made of, for example, a light transmitting transparent resin such as a PC resin, an ABS resin, a PET resin, a vinyl chloride resin, an acrylic resin such as a PMMA resin, a polystyrene resin, a COP resin, a COC resin, or a transparent glass. Applicable. Further, the light transmitting member 7 may be made of a translucent resin obtained by adding a pigment to a transparent resin. Further, the light transmitting member 7 may be a translucent resin made semitransparent by roughening the surface of the transparent resin on the light extraction portion side or forming a fine uneven structure. Further, the light transmitting member 7 may be a translucent laminate in which a translucent resin film is attached to the surface of transparent resin or transparent glass, or may be semitransparent colored glass.
 半透明な光透過部材7としては、例えば、透明樹脂に白色顔料として、酸化チタン、酸化亜鉛、タルク、マイカ、カオリン等を添加してもよい。この場合、添加する顔料の添加量は、透明性を維持できる範囲とするため、添加量を抑制する必要がある。また透明樹脂やガラスの表面に、半透明な樹脂フィルムなどを貼り付けた積層体とする場合には、例えば、ポリエステルフィルムに塩化ビニル樹脂でコーティングした樹脂フィルムを用いることができる。 As the translucent light transmitting member 7, for example, titanium oxide, zinc oxide, talc, mica, kaolin, etc. may be added to a transparent resin as a white pigment. In this case, the amount of the pigment added must be controlled within a range that can maintain transparency. Further, in the case of forming a laminate in which a translucent resin film or the like is attached to the surface of a transparent resin or glass, for example, a resin film obtained by coating a polyester film with a vinyl chloride resin can be used.
 成形されたマイクロ発泡樹脂シート15と光透過部材7との間には、導光空間19が形成される。より詳細には、枠部材により支持された光透過部材7の後方に、断面形状が窪み状の凹形状に成形されたマイクロ発泡樹脂シート15を配置することで、光透過部材7とマイクロ発泡樹脂シート15との間に導光空間19が形成される。導光空間19の内部であって、枠部材5又は光透過部材7の外周部には、基板11が配置される。すなわち、基板11は光透過部材7の外周に形成され、導光空間19の外周部に配置される。本発明の照明装置と無線通信装置の複合構造が得られる。 A light guiding space 19 is formed between the molded micro-foamed resin sheet 15 and the light transmitting member 7. More specifically, by arranging the micro-foamed resin sheet 15 having a concave cross-sectional shape behind the light-transmissive member 7 supported by the frame member, the light-transmissive member 7 and the micro-foamed resin A light guiding space 19 is formed between the sheet 15 and the sheet 15 . A substrate 11 is arranged inside the light guiding space 19 and on the outer periphery of the frame member 5 or the light transmitting member 7. That is, the substrate 11 is formed on the outer periphery of the light transmitting member 7 and arranged on the outer periphery of the light guide space 19. A composite structure of a lighting device and a wireless communication device according to the invention is obtained.
 図3は、基板11近傍の拡大図である。前述したように、基板11にはLED光源13が配置される。LED光源13としては、RGB光源、あるいは発光色をRGBに切り替え可能な1チップのLED光源、白色LED光源、昼光色のLED光源、蛍光体を利用した白色LED光源、白色または昼光色のLEDアレイ光源のいずれかあるいはこれらの光源を組み合わせたものを適用可能である。 FIG. 3 is an enlarged view of the vicinity of the substrate 11. As described above, the LED light source 13 is arranged on the substrate 11. The LED light source 13 may be an RGB light source, a one-chip LED light source whose emission color can be switched to RGB, a white LED light source, a daylight LED light source, a white LED light source using phosphor, or a white or daylight LED array light source. Either one or a combination of these light sources can be applied.
 LED光源13は、LED光源13から出射される光がマイクロ発泡樹脂シート15により反射するように、マイクロ発泡樹脂シート15の方向に向けて配置される。すなわち、LED光源13の発光面から出射される光がマイクロ発泡樹脂シート15により反射されるように、LED光源13の発光面がマイクロ発泡樹脂シート15に対向して、光透過部材と反対方向に向けて配置される。また、マイクロ発泡樹脂シート15は、拡散反射率が高いため、LED光源13から出射した光は、マイクロ発泡樹脂シート15により拡散反射して、一部は光透過部材7方向に向かい、他の光は導光空間19の内部で拡散反射を繰り返すことで、光が均一化して、均一な間接光を取り出すことが可能となる。 The LED light source 13 is arranged toward the micro-foamed resin sheet 15 so that the light emitted from the LED light source 13 is reflected by the micro-foamed resin sheet 15. That is, the light-emitting surface of the LED light source 13 faces the micro-foamed resin sheet 15 in the opposite direction to the light-transmitting member so that the light emitted from the light-emitting surface of the LED light source 13 is reflected by the micro-foamed resin sheet 15. be placed towards Furthermore, since the micro-foamed resin sheet 15 has a high diffuse reflectance, the light emitted from the LED light source 13 is diffusely reflected by the micro-foamed resin sheet 15, and a portion of the light is directed toward the light transmitting member 7 while other light is emitted from the LED light source 13. By repeating diffuse reflection inside the light guide space 19, the light becomes uniform, and it becomes possible to extract uniform indirect light.
 なお、導光空間19を形状は、LED光源13の照射光を受けて反射光を光透過部材7の方向に反射しやすいように、断面が窪み状の凹形状であれば、その形状は問わず任意の形状でよい。例えば、マイクロ発泡樹脂シート15の断面形状としては、U字型、逆台形状、おわん型、なだらかな窪み状の凹形状などを挙げることができる。一方、後述する無線通信装置17の表面の保護効果を目的とする場合には、マイクロ発泡樹脂シート15の形状として、窪み状の凹形状の中央部に平坦部を含む略U字型や逆台形状が望ましい。 Note that the shape of the light guide space 19 may be any shape as long as it is a concave shape with a concave cross section so that the reflected light upon receiving the light emitted from the LED light source 13 is easily reflected in the direction of the light transmitting member 7. It can be of any shape. For example, the cross-sectional shape of the micro-foamed resin sheet 15 includes a U-shape, an inverted trapezoid shape, a bowl-shape, a gently concave shape, and the like. On the other hand, when the purpose is to protect the surface of the wireless communication device 17, which will be described later, the shape of the micro-foamed resin sheet 15 may be a substantially U-shape with a flat part in the center of a concave shape, or an inverted table shape. The shape is desirable.
 光透過部材7の前面には、被覆部材9が配置されて、光透過部材7の一部が被覆される。被覆部材9としては、例えば、着色塗料、金属蒸着、又は金属メッキによる薄膜状の被覆部材9であってもよく、この場合には、例えば、In、Ge、Snなど蒸着させる薄膜メッキであってもよく、あるいは多数のドットパターンのマスクを通して、Alを蒸着させてもよい。あるいは、被覆部材9として、光透過部材7の前面に、光非透過性の所定厚さを有する着色樹脂を設けてもよい。 A covering member 9 is placed on the front surface of the light transmitting member 7 to cover a part of the light transmitting member 7. The covering member 9 may be, for example, a thin film coating member 9 made of colored paint, metal vapor deposition, or metal plating. In this case, for example, a thin film plating of In, Ge, Sn, etc. Alternatively, Al may be deposited through a mask with a large number of dot patterns. Alternatively, as the covering member 9, a colored resin having a predetermined thickness that does not transmit light may be provided on the front surface of the light transmitting member 7.
 このように、光透過部材7の一部が、着色塗料、金属蒸着、金属メッキ、所定厚さを有する光非透過性の着色樹脂のいずれかの被覆部材9で被覆されている場合には、着色塗料、金属蒸着又は金属メッキによる被覆部材9で光透過部材7が被覆されていない光透過部または着色樹脂が配置されていない光透過部から光が取り出される。 In this way, when a part of the light transmitting member 7 is coated with the coating member 9 made of colored paint, metal vapor deposition, metal plating, or non-light transmitting colored resin having a predetermined thickness, Light is extracted from the light transmitting portion where the light transmitting member 7 is not covered with the coating member 9 made of colored paint, metal vapor deposition, or metal plating, or from the light transmitting portion where no colored resin is disposed.
 ここで、図1に示すように、光透過部材7に配置された被覆部材9によって、光透過部が、外周側8と内周側10とに区分される。すなわち、内周側10は、被覆部材9によって囲まれている部位であり、外周側8は、被覆部材9と枠部材5との間に形成される部位である。 Here, as shown in FIG. 1, the light transmitting portion is divided into an outer circumferential side 8 and an inner circumferential side 10 by the covering member 9 disposed on the light transmitting member 7. That is, the inner peripheral side 10 is a region surrounded by the covering member 9, and the outer peripheral side 8 is a region formed between the covering member 9 and the frame member 5.
 ここで、LED光源13は、マイクロ発泡樹脂シート15側に向けて配置される。この際、前述したように、内部の導光空間19によって光が均一化されるため、光透過部材7の被覆部材9が配置されていない光透過部からは、略均一な光を取り出すことができる。したがって、外周側8と内周側10のそれぞれの光透過部から、導光空間19からの間接光を略同一輝度で取出すことができる。 Here, the LED light source 13 is arranged toward the micro foam resin sheet 15 side. At this time, as described above, since the light is made uniform by the internal light guiding space 19, substantially uniform light cannot be taken out from the light transmitting portion of the light transmitting member 7 where the covering member 9 is not arranged. can. Therefore, the indirect light from the light guide space 19 can be extracted from the light transmitting portions on the outer circumferential side 8 and the inner circumferential side 10 at substantially the same brightness.
 なお、LED光源13の出射方向は必ずしも光取出し方向とは逆方向ではなくてもよい。しかし、LED光源13の配向角の範囲内に、光透過部材7から光が透過する光透過部が含まれないような配置とすることで、照明装置3から取り出される光を略均一な間接光のみとすることができる。例えば、光透過部材7が平板状または凹凸構造を有する曲面状に形成され、導光空間19の光透過部側の形状が平板状または凹凸構造を有する曲面状に形成されたとしても、導光空間19内で反射光が拡散多重反射されるため、照明装置3から取り出される光を略均一な間接光のみとすることができる。 Note that the emission direction of the LED light source 13 does not necessarily have to be opposite to the light extraction direction. However, by arranging the LED light source 13 such that the light transmitting portion through which light is transmitted from the light transmitting member 7 is not included within the orientation angle range of the LED light source 13, the light extracted from the illumination device 3 can be made into substantially uniform indirect light. It can only be done. For example, even if the light transmitting member 7 is formed in the shape of a flat plate or a curved surface having an uneven structure, and the shape of the light transmitting portion side of the light guide space 19 is formed in the shape of a flat plate or a curved surface having an uneven structure, the light guide Since the reflected light is diffused and multiple reflected within the space 19, the light extracted from the illumination device 3 can be made into only substantially uniform indirect light.
 導光空間19とは反対側のマイクロ発泡樹脂シート15の反射面の背面側には、無線通信装置17が配置される。すなわち、無線通信装置17は、照明装置3の背面側に配置される。なお、無線通信装置17は、例えば、図示を省略した支持部材等によって、照明装置3の一部(例えば枠部材5)に固定される。 A wireless communication device 17 is arranged on the back side of the reflective surface of the micro-foamed resin sheet 15 on the side opposite to the light guide space 19. That is, the wireless communication device 17 is arranged on the back side of the lighting device 3. Note that the wireless communication device 17 is fixed to a part of the lighting device 3 (for example, the frame member 5) by, for example, a support member (not shown) or the like.
 無線通信装置17は、電波を放射することが可能な装置であり、例えば、ミリ波レーダや5G通信などに用いることができる。なお、ミリ波レーダは、雨、雪、霧などの気象条件や明るさなどの光学的環境条件による影響を受けにくいという特徴がある。このため、障害物検知には、24GHzから約80GHzの周波数帯のミリ波が使用されるが、上記範囲に限らず現状の5G通信などに適用される周波数帯にも適用できる。 The wireless communication device 17 is a device that can emit radio waves, and can be used for, for example, millimeter wave radar or 5G communication. Note that millimeter wave radar is characterized by being less affected by weather conditions such as rain, snow, and fog, and optical environmental conditions such as brightness. For this reason, millimeter waves in the frequency band from 24 GHz to approximately 80 GHz are used for obstacle detection, but the present invention is not limited to the above range and can also be applied to frequency bands applied to current 5G communications.
 ここで、複合構造1では、無線通信装置17の前方に配置されたマイクロ発泡樹脂シート15は、照明装置の筐体を兼ねることが可能な光反射板であって、マイクロ発泡樹脂シート15が照明装置3の筐体の一部として機能し、無線通信装置17の電波放射面に接触するように配置される。また、基板11は光透過部材7の外周に形成され、照明装置3の中央部には基板11が配置されない。このため、無線通信装置17の前方の電波の照射範囲には、基板11は配置されず、無線通信装置17から放射された電波は、マイクロ発泡樹脂シート15及び光透過部材7を通過して、前方に照射される。この際、マイクロ発泡樹脂シート15は、基板11と比較して比誘電率が低く電波透過性に優れ、電波吸収性が低い材料であるため、照明装置3の背面に基板11を配置する場合と比較して、電波の損失を低減することができる。例えば、ガラエポ基板の比誘電率は、4.5~5.2である。 Here, in the composite structure 1, the micro foam resin sheet 15 placed in front of the wireless communication device 17 is a light reflecting plate that can also serve as a casing of the lighting device, and the micro foam resin sheet 15 It functions as a part of the housing of the device 3 and is arranged so as to be in contact with the radio wave emitting surface of the wireless communication device 17 . Further, the substrate 11 is formed on the outer periphery of the light transmitting member 7, and the substrate 11 is not arranged at the center of the lighting device 3. Therefore, the substrate 11 is not placed in the radio wave irradiation range in front of the wireless communication device 17, and the radio waves emitted from the wireless communication device 17 pass through the micro foam resin sheet 15 and the light transmitting member 7. Illuminated forward. At this time, the micro-foamed resin sheet 15 is a material that has a lower dielectric constant than the substrate 11, has excellent radio wave transmittance, and has low radio wave absorption. In comparison, loss of radio waves can be reduced. For example, the dielectric constant of a glass epoxy substrate is 4.5 to 5.2.
 以上、本実施の形態によれば、成形されたマイクロ発泡樹脂シート15によって、光透過部材7との間に導光空間19を形成することで、LED光源13からの直接光ではなく間接光のみを取り出すことができるため、部位による光の輝度を均一にすることができる。 As described above, according to the present embodiment, by forming the light guiding space 19 between the molded micro-foamed resin sheet 15 and the light transmitting member 7, only indirect light is emitted from the LED light source 13 instead of direct light. can be taken out, making it possible to make the brightness of light uniform depending on the part.
 また、マイクロ発泡樹脂シート15は、無線通信装置17から放射される電波の放射範囲と重なるように配置されるが、比誘電率が低い材料で形成されるため、電波の反射吸収が少なく、マイクロ発泡樹脂シート15を透過する際の電波損失の影響を低減することができる。マイクロ発泡樹脂シート15は微細気泡構造を有しているため、仮にシートを熱成形などにより、成形したとしても気泡構造が大きく変わらないため、成形前後の光拡散反射率や比誘電率や電波の透過損失および電波の散乱損失などは成形前後でほぼ同様である。 Further, the micro foam resin sheet 15 is arranged so as to overlap the radiation range of the radio waves emitted from the wireless communication device 17, but since it is formed of a material with a low dielectric constant, there is little reflection or absorption of radio waves, and the micro foam resin sheet 15 is The influence of radio wave loss when transmitting through the foamed resin sheet 15 can be reduced. Since the micro-foamed resin sheet 15 has a fine cell structure, even if the sheet is molded by thermoforming, the cell structure will not change significantly, so the light diffusive reflectance, relative dielectric constant, and radio wave characteristics before and after molding will be Transmission loss and radio wave scattering loss are almost the same before and after molding.
 一方、基板11は、マイクロ発泡樹脂シート15と比較して、比誘電率が高く電波吸収率が高いが、基板11は光透過部材7の外周に配置されるため、マイクロ発泡樹脂シート15の背面側に配置される無線通信装置17から放射される電波は、基板11を透過することなく複合構造1の前方に放射される。このため、基板11を透過する際の損失を抑制することができる。 On the other hand, the substrate 11 has a higher dielectric constant and a higher radio wave absorption rate than the micro-foamed resin sheet 15, but since the substrate 11 is disposed on the outer periphery of the light-transmitting member 7, the back surface of the micro-foamed resin sheet 15 is Radio waves radiated from the wireless communication device 17 disposed on the side are radiated to the front of the composite structure 1 without passing through the substrate 11. Therefore, loss when transmitting through the substrate 11 can be suppressed.
 このように、無線通信装置の前方の電波放射面に対応する前記照明装置の中央部に、無線通信装置からの電波の発信を阻害しないように、光透過部材7のみ又は光透過部材7及びマイクロ発泡樹脂シート15のみが配置され、照明装置のLED光源13や基板11、枠部材5、及び筐体が配置されずに、照明装置のLED光源や基板、枠部材、筐体が照明装置の外周部に配置されることで、電波損失の影響を低減することができる。また、マイクロ発泡樹脂シートが無線通信装置の電波放射面に接触するように配置される場合と無線通信装置の電波放射面から所定距離離間して配置される場合を含めた、マイクロ発泡樹脂シートと無線通信装置との距離は5mm以下であり、マイクロ発泡樹脂シートの比誘電率が1.8以下となるマイクロ発泡気泡構造を有していることで、より確実に効果を得ることができる。すなわち、マイクロ発泡樹脂シートは、光の拡散反射性に優れると同時に、基板や光透過部材と比較して比誘電率が低く電波透過性に優れる材料で構成される。 In this way, only the light transmitting member 7 or the light transmitting member 7 and the micro-light transmitting member 7 are installed in the center of the illumination device corresponding to the radio wave emitting surface in front of the wireless communication device so as not to obstruct the transmission of radio waves from the wireless communication device. Only the foamed resin sheet 15 is arranged, and the LED light source 13, board 11, frame member 5, and casing of the lighting device are not arranged, and the LED light source, board, frame member, and casing of the lighting device are arranged around the outer periphery of the lighting device. By arranging it in the area, the influence of radio wave loss can be reduced. In addition, the micro-foamed resin sheet and the micro-foamed resin sheet include cases where the micro-foamed resin sheet is placed in contact with the radio wave emitting surface of the wireless communication device and cases where the micro-foamed resin sheet is placed at a predetermined distance from the radio wave emitted surface of the wireless communication device. The distance to the wireless communication device is 5 mm or less, and the micro-foamed resin sheet has a micro-foamed cell structure with a dielectric constant of 1.8 or less, so that the effect can be more reliably obtained. That is, the micro-foamed resin sheet is made of a material that has excellent light diffusion and reflection properties, and has a lower dielectric constant and excellent radio wave transmittance than the substrate or the light-transmitting member.
このような複合構造1としては、例えば、照明装置3が、屋外用の照明装置であり、無線通信装置17が、室外にいる歩行者や道路を走行する車両との間で通信を行う無線通信機であるような場合に適用可能である。このように、屋外用照明装置に無線送信機を併設する複合構造によれば、歩行者や自動車と屋外用照明装置の間に障害物がないため、無線送信機により屋外での通信を行うのに適している。 In such a composite structure 1, for example, the lighting device 3 is an outdoor lighting device, and the wireless communication device 17 is a wireless communication device for communicating with pedestrians outside the room or vehicles running on the road. This method is applicable to cases where there is a machine. In this way, with a composite structure in which a wireless transmitter is attached to an outdoor lighting device, there are no obstacles between pedestrians or cars and the outdoor lighting device, making it possible to communicate outdoors using the wireless transmitter. suitable for
 また、無線通信装置17が5G通信において使用される無線送信機であり、照明装置3が広告用電子看板用照明装置あるいは案内用電子看板装置であるような複合構造1としても利用可能である。無線送信機を、広告用電子看板用照明装置等に適用することで、設置場所の制約が少なく、設置場所を確保することが容易である。なお、現状の5G通信においては28GHz帯など30GHz以下の周波数も含まれ、上限はおおよそ100GHzまでの帯域を対象としている。 It can also be used as a composite structure 1 in which the wireless communication device 17 is a wireless transmitter used in 5G communication, and the lighting device 3 is a lighting device for an advertising electronic signboard or a guide electronic signboard device. By applying a wireless transmitter to a lighting device for an advertising electronic signboard, etc., there are fewer restrictions on the installation location, and it is easy to secure an installation location. In addition, current 5G communication includes frequencies below 30 GHz such as the 28 GHz band, and the upper limit covers bands up to approximately 100 GHz.
 ここで、本発明の照明装置と無線通信装置の複合構造において、屋外用の照明装置や広告用電子看板用照明装置あるいは案内用電子看板装置などの大型の照明装置として使用する場合には、枠部材に設けた所定幅の基板上に、照明装置の外周部に配置されるLED光源を、格子状、千鳥格子状、アレイ状に配置した複数の集合光源として使用することで、照明装置を大きくするとともに照明装置の輝度を向上させることができる。また、無線通信装置を複数並列に設けることもできる。また、照明装置の大型化を目的としなくても、LED光源を複数配列すれば、輝度向上のみを図ることができる。 Here, in the composite structure of the lighting device and wireless communication device of the present invention, when used as a large lighting device such as an outdoor lighting device, a lighting device for an advertising electronic signboard, or a guidance electronic signage device, a frame By using LED light sources arranged around the outer periphery of the lighting device as a plurality of collective light sources arranged in a grid, houndstooth pattern, or array on a substrate with a predetermined width provided on the member, the lighting device can be In addition to increasing the size, the brightness of the lighting device can be improved. Furthermore, a plurality of wireless communication devices can be provided in parallel. Further, even if the purpose is not to increase the size of the lighting device, by arranging a plurality of LED light sources, it is possible to improve the brightness.
 また、照明装置3が、電車、ドローン、ロボット等の移動体に装着する照明装置であり、無線通信装置17がミリ波レーダ用送信機である場合において、複合構造1を、移動体の障害物検知のための周辺監視用または前方監視用レーダとして利用することもできる。このように、例えばミリ波レーダ等を放射可能な無線通信装置17と装飾用の照明装置3との複合構造1は、色発光、文字、ロゴ、広告等を発光表示させる機能によって、意匠性を高めることが可能である。 In addition, when the lighting device 3 is a lighting device to be attached to a moving object such as a train, a drone, or a robot, and the wireless communication device 17 is a millimeter wave radar transmitter, the composite structure 1 may be attached to an obstacle on the moving object. It can also be used as a peripheral monitoring or forward monitoring radar for detection. In this way, the composite structure 1 consisting of the wireless communication device 17 capable of emitting millimeter wave radar or the like and the decorative lighting device 3 has a high design quality due to the function of emitting colored light and displaying characters, logos, advertisements, etc. It is possible to increase
 なお、移動体通信用の無線送信機に用いる波長帯域は、レーダの波長が24~26GHz帯、77GHz帯、79GHz帯の帯域等のミリ波レーダを用いることができる。この際、ミリ波の減衰特性として、代表的な79GHzと24GHz帯を比べると、透過損失はガラス、樹脂材料、コンクリート等材料によって異なるが、79GHz帯の方が大きい。 Note that as the wavelength band used for the wireless transmitter for mobile communication, millimeter wave radar, such as a radar wavelength in the 24 to 26 GHz band, 77 GHz band, 79 GHz band, etc., can be used. At this time, when comparing typical millimeter wave attenuation characteristics between 79 GHz and 24 GHz bands, the transmission loss differs depending on the material such as glass, resin material, concrete, etc., but the 79 GHz band is larger.
(第2の実施形態)
 次に、第2の実施形態について説明する。図4は、第2の実施形態にかかる複合構造1aを示す断面図である。なお、以下の説明において、複合構造1と同様の機能等を奏する構成については、図1~図3と同一の符号を付し、重複する説明を省略する。
(Second embodiment)
Next, a second embodiment will be described. FIG. 4 is a sectional view showing a composite structure 1a according to the second embodiment. In addition, in the following description, the same reference numerals as those in FIGS. 1 to 3 are given to structures that perform the same functions as those of the composite structure 1, and redundant description will be omitted.
 複合構造1aは、複合構造1と略同様の構造であるが、無線通信装置17の配置が異なる。複合構造1aでは、筐体21が用いられ、照明装置3及び無線通信装置17は、それぞれの装置の外周部が共通の筐体21に固定される。この際、無線通信装置17の前方に配置されたマイクロ発泡樹脂シート15が、無線通信装置17の電波放射面から所定距離離間して配置される。ここで、特に図示しないが、照明装置3及び無線通信装置17は、必ずしも一体に固定されている必要なく所定距離離間して配置されて、相互に別体で所定の間隔をあけて別部材に固定されていてもよい。あるいは、照明装置3が無線通信装置17の前方に、相互に接触配置されていても、相互に別体で別部材に固定されていてもよい。 The composite structure 1a has substantially the same structure as the composite structure 1, but the arrangement of the wireless communication device 17 is different. In the composite structure 1a, a housing 21 is used, and the lighting device 3 and the wireless communication device 17 are fixed to the common housing 21 at the outer peripheral portions of the respective devices. At this time, the micro foam resin sheet 15 placed in front of the wireless communication device 17 is placed at a predetermined distance from the radio wave emitting surface of the wireless communication device 17 . Here, although not particularly shown, the lighting device 3 and the wireless communication device 17 do not necessarily have to be fixed together, but may be arranged at a predetermined distance apart, and may be separate members separated from each other at a predetermined distance. It may be fixed. Alternatively, the lighting devices 3 may be placed in front of the wireless communication device 17 in contact with each other, or may be separate from each other and fixed to separate members.
 このような複合構造1aでも、前述した複合構造1と同様の効果を得ることができる。このように、無線通信装置17と照明装置3とは、接触していてもよく、接触せずに、所定距離離間させてもよい。 Even with such a composite structure 1a, the same effects as the composite structure 1 described above can be obtained. In this way, the wireless communication device 17 and the lighting device 3 may be in contact with each other, or may not be in contact with each other and may be separated by a predetermined distance.
(第3の実施形態)
 図5Aは、第3の実施形態にかかる複合構造1bを示す断面図である。なお、以下の説明では、無線通信装置17が導光空間を形成するマイクロ発泡樹脂シート15に接触して配置されている形態を説明するが、複合構造1aのように、無線通信装置17を、マイクロ発泡樹脂シート15から所定距離離間させて配置してもよい。
(Third embodiment)
FIG. 5A is a cross-sectional view showing a composite structure 1b according to the third embodiment. In the following description, a configuration in which the wireless communication device 17 is placed in contact with the micro-foamed resin sheet 15 forming the light guide space will be described, but like the composite structure 1a, the wireless communication device 17 is It may be arranged at a predetermined distance from the micro-foamed resin sheet 15.
 複合構造1bは、複合構造1と略同様の構造であるが、被覆部材9の配置が異なる。図5Bは、図5AのC部拡大図である。複合構造1では、光透過部材7の前面に被覆部材9が配置されたが、複合構造1bでは、被覆部材9は、光透過部材7の裏面に配置される。すなわち、光透過部材7の背面の一部が着色塗料、金属蒸着、又は金属メッキによる薄膜状の被覆部材9により被覆されているか、あるいは光透過部材7の背面に、光非透過性の所定厚さを有する着色樹脂による被覆部材が配置される。 The composite structure 1b has substantially the same structure as the composite structure 1, but the arrangement of the covering member 9 is different. FIG. 5B is an enlarged view of section C in FIG. 5A. In the composite structure 1, the covering member 9 is arranged on the front surface of the light transmitting member 7, but in the composite structure 1b, the covering member 9 is arranged on the back surface of the light transmitting member 7. That is, a part of the back surface of the light transmitting member 7 is covered with a thin film coating member 9 made of colored paint, metal vapor deposition, or metal plating, or the back surface of the light transmitting member 7 is coated with a predetermined thickness of non-light transmitting material. A covering member made of a colored resin having a certain color is disposed.
 また、被覆部材9のさらに裏面には、被覆部材9に対応する位置の内周面に、マイクロ発泡樹脂シート15aが直接貼り付けられる。すなわち、光透過部材7の導光空間19側は、光透過部を除く全ての位置が、光反射性のマイクロ発泡樹脂シート15aで被覆される。なお、マイクロ発泡樹脂シート15aは、マイクロ発泡樹脂シート15と同一の部材を適用することができる。 Furthermore, on the back surface of the covering member 9, a micro foamed resin sheet 15a is directly attached to the inner peripheral surface at a position corresponding to the covering member 9. That is, all positions on the light guide space 19 side of the light transmitting member 7 except for the light transmitting portion are covered with a light reflective microfoamed resin sheet 15a. Note that the same member as the micro-foamed resin sheet 15 can be used for the micro-foamed resin sheet 15a.
 複合構造1bによれば、マイクロ発泡樹脂シート15aによって、導光空間19内の光を、被覆部材による光の吸収反射を防止でき、さらに効率よく拡散反射させることができる。このため、より均一な輝度レベルを向上させた拡散反射光を取り出すことができる。 According to the composite structure 1b, the micro-foamed resin sheet 15a can prevent the light in the light guide space 19 from being absorbed and reflected by the covering member, and can more efficiently diffuse and reflect the light. Therefore, it is possible to extract diffusely reflected light with a more uniform brightness level.
 ここで、被覆部材9を配置せずに、マイクロ発泡樹脂シート15aを直接光透過部材7の裏面に貼り付けると、マイクロ発泡樹脂シート15aは、白色のシート状部材で意匠性が付与されていないことから、光透過部材7の前面から、マイクロ発泡樹脂シート15aが直接視認されると意匠性が低下する。これに対し、被覆部材9の裏面にのみマイクロ発泡樹脂シート15aを配置することで、光透過部材7の前面から、マイクロ発泡樹脂シート15aが直接視認されることがなく、意匠性を高めることができる。 Here, if the micro-foamed resin sheet 15a is attached directly to the back surface of the light-transmitting member 7 without disposing the covering member 9, the micro-foamed resin sheet 15a is a white sheet-like member with no design. Therefore, if the micro-foamed resin sheet 15a is directly visible from the front surface of the light-transmitting member 7, the design quality will deteriorate. On the other hand, by arranging the micro foam resin sheet 15a only on the back surface of the covering member 9, the micro foam resin sheet 15a is not directly visible from the front surface of the light transmitting member 7, and the design can be improved. can.
 なお、被覆部材9とマイクロ発泡樹脂シート15aとを用いた複合構造としては、複合構造1bには限られない。図6Aは、複合構造1cを示す断面図である。 Note that the composite structure using the covering member 9 and the micro-foamed resin sheet 15a is not limited to the composite structure 1b. FIG. 6A is a cross-sectional view showing the composite structure 1c.
 複合構造1cでは、被覆部材9は光透過部材7の前面に配置されるが、被覆部材9に対応する位置の光透過部材7の裏面側にマイクロ発泡樹脂シート15aが配置される。複合構造1cにおいても、マイクロ発泡樹脂シート15aによる拡散反射によって、均一な輝度の光を取り出すことができるとともに、被覆部材9によって、マイクロ発泡樹脂シート15aが光透過部材7の前面から視認されることを抑制することができる。 In the composite structure 1c, the covering member 9 is arranged on the front side of the light transmitting member 7, but the micro foam resin sheet 15a is arranged on the back side of the light transmitting member 7 at a position corresponding to the covering member 9. In the composite structure 1c as well, light of uniform brightness can be extracted by the diffuse reflection by the micro-foamed resin sheet 15a, and the micro-foamed resin sheet 15a can be visually recognized from the front side of the light-transmitting member 7 by the covering member 9. can be suppressed.
 この場合には、被覆部材9としての着色樹脂と所定距離離間してマイクロ発泡樹脂シート15aが光透過部材7の裏面側の着色樹脂と対応する位置に配置されるので、光透過部材7の光透過部を斜め方向から見た場合に、外部から視認されないようにマイクロ発泡樹脂シート15aは着色樹脂と相似形状で少し小さめに形成されることが望ましい。一方、マイクロ発泡樹脂シート15aの外周部の一部が、外部から視認されてもよい場合には、マイクロ発泡樹脂シート15aは着色樹脂と同一の大きさに形成されてもよい。 In this case, the micro-foamed resin sheet 15a is placed at a position corresponding to the colored resin on the back side of the light-transmitting member 7 at a predetermined distance from the colored resin serving as the covering member 9, so that the light-transmitting member 7 can be It is desirable that the micro-foamed resin sheet 15a be formed in a similar shape to the colored resin and slightly smaller so that it is not visible from the outside when the transparent portion is viewed from an oblique direction. On the other hand, if a part of the outer circumference of the micro-foamed resin sheet 15a may be visible from the outside, the micro-foamed resin sheet 15a may be formed to have the same size as the colored resin.
 また、図6Bは、複合構造1dを示す断面図である。複合構造1dは、複合構造1cと略同様であるが、光非透過性の着色樹脂9aが光透過部材7の前面において、光透過部材7の前面と略同一平面となるように配置される。すなわち、光透過部材7の前面の一部において、光透過部材7の略同一平面となる部位に、光非透過性の所定厚さを有する着色樹脂9aが配置される。着色樹脂9aに対応する位置の光透過部材7の裏面側にマイクロ発泡樹脂シート15aが配置される。複合構造1dにおいても、複合構造1c等と同一の効果を得ることができる。 Further, FIG. 6B is a cross-sectional view showing the composite structure 1d. The composite structure 1d is substantially the same as the composite structure 1c, but the non-light-transmitting colored resin 9a is arranged on the front surface of the light-transmitting member 7 so as to be substantially flush with the front surface of the light-transmitting member 7. That is, in a part of the front surface of the light transmitting member 7, a colored resin 9a having a predetermined thickness and being non-light transmitting is disposed on a portion of the light transmitting member 7 that is substantially on the same plane. A micro foamed resin sheet 15a is arranged on the back side of the light transmitting member 7 at a position corresponding to the colored resin 9a. The same effect as the composite structure 1c etc. can be obtained also in the composite structure 1d.
 この場合には、被覆部材9としての着色樹脂9aと所定距離離間してマイクロ発泡樹脂シート15aが光透過部材7の裏面側の着色樹脂9aと対応する位置に配置されるので、図6Aと同様にマイクロ発泡樹脂シート15aは着色樹脂9aと相似形状で少し小さめに形成されることが望ましいが、マイクロ発泡樹脂シート15aは着色樹脂9aと同一の大きさに形成されてもよい。 In this case, the micro-foamed resin sheet 15a is placed at a position corresponding to the colored resin 9a on the back surface side of the light-transmitting member 7 at a predetermined distance from the colored resin 9a as the covering member 9, so it is similar to FIG. 6A. Although it is desirable that the micro-foamed resin sheet 15a be formed in a similar shape to the colored resin 9a and slightly smaller, the micro-foamed resin sheet 15a may be formed to have the same size as the colored resin 9a.
 また、図7Aは、複合構造1eを示す断面図である。複合構造1eは、複合構造1bと略同様であるが、着色樹脂9aが光透過部材7の裏面において、光透過部材7の裏面と略同一平面となるように配置される。すなわち、光透過部材7の裏面の一部において、光透過部材7の略同一平面となる部位に、光非透過性の所定厚さを有する着色樹脂9aが配置され、着色樹脂9aに対応する位置の光透過部材7の裏面側に着色樹脂9aと同形状のマイクロ発泡樹脂シート15aが配置される。複合構造1eにおいても、複合構造1c等と同一の効果を得ることができる。 Further, FIG. 7A is a cross-sectional view showing the composite structure 1e. The composite structure 1e is substantially the same as the composite structure 1b, but the colored resin 9a is arranged on the back surface of the light transmitting member 7 so as to be substantially flush with the rear surface of the light transmitting member 7. That is, on a part of the back surface of the light transmitting member 7, a colored resin 9a that is non-light transmitting and having a predetermined thickness is arranged on a portion that is substantially on the same plane as the light transmitting member 7, and a position corresponding to the colored resin 9a is arranged. A micro-foamed resin sheet 15a having the same shape as the colored resin 9a is arranged on the back side of the light transmitting member 7. The same effects as the composite structure 1c and the like can be obtained also in the composite structure 1e.
 また、図7Bは、複合構造1fを示す断面図である。複合構造1fは、複合構造1eと略同様であるが、着色樹脂9aが光透過部材7の内部に配置される。すなわち、光透過部材7の内部に、光非透過性の所定厚さを有する着色樹脂9aが配置され、着色樹脂9aに対応する位置の光透過部材7の裏面側にマイクロ発泡樹脂シート15aが配置される。複合構造1fにおいても、複合構造1c等と同一の効果を得ることができる。 Further, FIG. 7B is a cross-sectional view showing the composite structure 1f. Composite structure 1f is substantially the same as composite structure 1e, but colored resin 9a is arranged inside light transmitting member 7. That is, a colored resin 9a having a predetermined thickness that does not transmit light is arranged inside the light-transmitting member 7, and a micro-foamed resin sheet 15a is arranged on the back side of the light-transmitting member 7 at a position corresponding to the colored resin 9a. be done. The same effect as the composite structure 1c etc. can be obtained also in the composite structure 1f.
 この場合には、被覆部材9として着色樹脂9aと所定距離離間してマイクロ発泡樹脂シート15aが光透過部材7の裏面側の着色樹脂9aと対応する位置に配置されるので、図6Bと同様にマイクロ発泡樹脂シート15aは着色樹脂9aと相似形状で少し小さめに形成されることが望ましいが、マイクロ発泡樹脂シート15aは着色樹脂9aと同一の大きさに形成されてもよい。 In this case, the micro-foamed resin sheet 15a as the covering member 9 is placed at a position corresponding to the colored resin 9a on the back side of the light transmitting member 7 at a predetermined distance from the colored resin 9a, so that the same procedure as in FIG. 6B is performed. Although it is desirable that the micro-foamed resin sheet 15a be formed in a similar shape to the colored resin 9a and slightly smaller, the micro-foamed resin sheet 15a may be formed to have the same size as the colored resin 9a.
 また、図8は、複合構造1gを示す断面図である。複合構造1gは、複合構造1fと略同様であるが、着色樹脂9aが光透過部材7と略同一厚みで配置される。図5A~図8までの図面には、いずれも被覆部材9としての着色樹脂9aと対応する位置の光透過部材7の裏面に着色樹脂9aと所定距離離間してマイクロ発泡樹脂シート15aを配置するか、あるいは光透過部材7の裏面側に配置された被覆部材9の裏面に直接マイクロ発泡樹脂シート15aを配置することができるが、光透過部から取り出す光の輝度レベルの向上を所定レベルで抑えるならば、被覆部材9や着色樹脂9aの裏面側にマイクロ発泡樹脂シート15aを配置しなくてもよい。 Further, FIG. 8 is a cross-sectional view showing the composite structure 1g. The composite structure 1g is substantially the same as the composite structure 1f, but the colored resin 9a is arranged to have substantially the same thickness as the light transmitting member 7. 5A to 8, a micro foam resin sheet 15a is arranged on the back surface of the light transmitting member 7 at a position corresponding to the colored resin 9a as the covering member 9 at a predetermined distance from the colored resin 9a. Alternatively, the micro foam resin sheet 15a can be placed directly on the back side of the covering member 9 placed on the back side of the light transmitting member 7, but the increase in the brightness level of the light extracted from the light transmitting part can be suppressed to a predetermined level. In this case, it is not necessary to arrange the micro-foamed resin sheet 15a on the back side of the covering member 9 and the colored resin 9a.
 複合構造1gにおいても、着色樹脂9aの裏面側にマイクロ発泡樹脂シート15aが配置される。このため、マイクロ発泡樹脂シート15aによる拡散反射によって、均一な輝度の光を取り出すことができるとともに、着色樹脂9aによって、マイクロ発泡樹脂シート15aが光透過部材7の前面から視認されることを抑制することができる。 Also in the composite structure 1g, a microfoamed resin sheet 15a is arranged on the back side of the colored resin 9a. Therefore, light of uniform brightness can be extracted by the diffuse reflection by the micro foam resin sheet 15a, and the colored resin 9a suppresses the micro foam resin sheet 15a from being visible from the front of the light transmitting member 7. be able to.
 このように、光透過部材7の前面または背面の一部が着色塗料、金属蒸着、又は金属メッキによる薄膜状の被覆部材9により被覆されているか、あるいは光透過部材7の前面又は背面、あるいは光透過部材7の略同一平面となる部位又は光透過部材7の内部に、光非透過性の所定厚さを有する着色樹脂9aが配置されるか、あるいは光透過部材7の一部に代えて、光透過部材7と同一厚みの着色樹脂9aが配置されればよい。このように、光透過部材7の一部が、着色塗料、金属蒸着、金属メッキ、所定厚さを有する光非透過性の着色樹脂のいずれかの被覆部材9で被覆されているか、あるいは光透過部材7の一部に光透過部材7の代わりに所定厚さを有する光非透過性の着色樹脂9aが配置されている場合には、被覆部材9で光透過部材7が被覆されていない光透過部または着色樹脂9aが配置されていない光透過部から、光を取り出すことができる。 In this way, a part of the front or back surface of the light transmitting member 7 is covered with a thin film coating member 9 made of colored paint, metal vapor deposition, or metal plating, or the front or back surface of the light transmitting member 7 or the light A colored resin 9a that is non-transparent and has a predetermined thickness is disposed in a portion of the transparent member 7 that is substantially on the same plane or inside the light-transmissive member 7, or instead of a part of the light-transparent member 7, The colored resin 9a having the same thickness as the light transmitting member 7 may be disposed. In this way, a part of the light transmitting member 7 is coated with a coating member 9 made of colored paint, metal vapor deposition, metal plating, or a non-light transmitting colored resin having a predetermined thickness, or is coated with a light transmitting member 9. When a non-light-transmitting colored resin 9a having a predetermined thickness is placed in place of the light-transmitting member 7 in a part of the member 7, the light-transmitting member 7 is not covered with the covering member 9 and the light transmitting Light can be extracted from the transparent portion where the colored resin 9a is not disposed.
 また、被覆部材9又は着色樹脂9aに対応する位置の光透過部材7の裏面側にマイクロ発泡樹脂シート15aを配置することで、マイクロ発泡樹脂シート15aによる拡散反射によって、均一な輝度の光を取り出すことができるとともに、被覆部材9又は着色樹脂9aによって、マイクロ発泡樹脂シート15aが光透過部材7の前面から視認されることを抑制することができる。 In addition, by arranging the micro foam resin sheet 15a on the back side of the light transmitting member 7 at a position corresponding to the covering member 9 or the colored resin 9a, light with uniform brightness can be taken out through diffuse reflection by the micro foam resin sheet 15a. In addition, it is possible to prevent the micro foamed resin sheet 15a from being visible from the front side of the light transmitting member 7 by the covering member 9 or the colored resin 9a.
 この際、光透過部材7の所定位置に被覆部材9が設けられ、被覆部材9が光透過部材7の裏面に露出して形成されている場合には、被覆部材9の裏面に直接、被覆部材9と同一の大きさのマイクロ発泡樹脂シート15aが貼り付けられればよい。また、被覆部材9が光透過部材7の裏面に露出していない場合には、光透過部材7の裏面の被覆部材9に対応する位置に被覆部材9と相似形状で少し大きさが小さいか、あるいは被覆部材9と同一の大きさのマイクロ発泡樹脂シート15aが貼り付けられればよい。 At this time, if the covering member 9 is provided at a predetermined position of the light transmitting member 7 and the covering member 9 is formed to be exposed on the back surface of the light transmitting member 7, the covering member 9 is directly attached to the back surface of the covering member 9. It is sufficient if a micro foamed resin sheet 15a of the same size as 9 is attached. In addition, if the covering member 9 is not exposed on the back surface of the light transmitting member 7, a similar shape to the covering member 9 but slightly smaller in size may be placed at a position corresponding to the covering member 9 on the back surface of the light transmitting member 7. Alternatively, a micro-foamed resin sheet 15a having the same size as the covering member 9 may be attached.
 以上のように、光拡散反射性のマイクロ発泡樹脂シートを使用した本発明の照明装置と無線通信装置の複合構造並びに照明装置と無線通信装置の配置方法の発明によれば、無線通信装置の前方に照明装置を配置しても、照明装置の構成部材による無線通信装置から発信される電波の吸収損失が少なく、照明装置の光透過部材から光取出しを行う光透過部の形成位置に関係なく、照明装置から取出す光の輝度を略一定にする意匠性に優れた間接照明装置を得ることができる。これらの発明においては、無線通信装置の前方には、電波の透過性に優れたマイクロ発泡樹脂シートを除くと、比誘電率が通常2.0以上の部材である、被覆部材が少なくとも一部に被覆された光透過部材が配置されるだけであるため、照明装置が無線通信装置の前方に配置されていても、電波透過性に優れる無線通信装置と照明装置の構造や配置方法を得ることができる。また、電波の透過損失が少ないだけでなく、電波の散乱損失にも優れる照明装置と無線通信装置の複合構造を得ることができる。また、このような照明装置と無線通信装置の配置方法により、照明装置と無線通信装置との複合構造を配置することで、拡散反射特性に優れると同時に電波の透過損失及び散乱損失に優れる照明装置付き無線通信装置を得ることができる。 As described above, according to the invention of the composite structure of a lighting device and a wireless communication device and the method of arranging the lighting device and a wireless communication device of the present invention using a light-diffusing and reflective micro-foamed resin sheet, the front of the wireless communication device Even if the lighting device is placed in the lighting device, the absorption loss of radio waves emitted from the wireless communication device by the components of the lighting device is small, and regardless of the formation position of the light transmitting part that extracts light from the light transmitting member of the lighting device, It is possible to obtain an indirect lighting device with excellent design that makes the brightness of light extracted from the lighting device substantially constant. In these inventions, at least a portion of the front of the wireless communication device is covered with a covering member, which has a dielectric constant of usually 2.0 or more, excluding the micro-foamed resin sheet that has excellent radio wave transparency. Since only the coated light transmitting member is placed, even if the lighting device is placed in front of the wireless communication device, it is possible to obtain a structure and arrangement method for the wireless communication device and the lighting device that have excellent radio wave transparency. can. Further, it is possible to obtain a composite structure of a lighting device and a wireless communication device that not only has low transmission loss of radio waves but also has excellent scattering loss of radio waves. In addition, by arranging a lighting device and a wireless communication device in a composite structure using this method of arranging a lighting device and a wireless communication device, it is possible to create a lighting device that has excellent diffuse reflection characteristics and at the same time has excellent transmission loss and scattering loss of radio waves. It is possible to obtain a wireless communication device with a wireless communication device.
 以上、添付図を参照しながら、本発明の実施の形態を説明したが、本発明の技術的範囲は、前述した実施の形態に左右されない。当業者であれば、特許請求の範囲に記載された技術的思想の範疇内において各種の変更例または修正例に想到し得ることは明らかであり、それらについても当然に本発明の技術的範囲に属するものと了解される。 Although the embodiments of the present invention have been described above with reference to the attached drawings, the technical scope of the present invention is not limited to the embodiments described above. It is clear that those skilled in the art can come up with various changes and modifications within the scope of the technical idea stated in the claims, and these naturally fall within the technical scope of the present invention. It is understood that it belongs.
1、1a、1b、1c、1d、1e、1f、1g………複合構造
3………照明装置
5………枠部材
7………光透過部材
8………外周側
9………被覆部材
9a………着色樹脂
10………内周側
11………基板
13………LED光源
15、15a………マイクロ発泡樹脂シート
17………無線通信装置
19………導光空間
21………筐体
 
1, 1a, 1b, 1c, 1d, 1e, 1f, 1g...Composite structure 3...Illuminating device 5...Frame member 7...Light transmitting member 8...Outer peripheral side 9...Coating Member 9a...Colored resin 10...Inner peripheral side 11...Substrate 13...LED light source 15, 15a...Micro foam resin sheet 17...Wireless communication device 19...Light guide space 21 ...... Housing

Claims (18)

  1.  マイクロ発泡樹脂シートを用いた、無線通信装置の前方に配置される照明装置と無線通信装置との複合構造であって、
     前記照明装置は、
     LED光源と、
     前記LED光源を支持する基板と、
     光透過部材と、
     前記光透過部材の外周部を支持する枠部材と、
     光拡散反射性のマイクロ発泡樹脂シートと、
     を有し、
     前記枠部材により支持された前記光透過部材の後方に、断面形状が窪み状の凹形状に成形された前記マイクロ発泡樹脂シートを配置することで、前記光透過部材と前記マイクロ発泡樹脂シートとの間に導光空間が形成され、
     前記LED光源の発光面から出射される光が前記マイクロ発泡樹脂シートにより反射されるように、前記LED光源の発光面が前記マイクロ発泡樹脂シートに対向して、前記光透過部材と反対方向に向けて配置され、
     前記無線通信装置は、前記マイクロ発泡樹脂シートの光反射面の背面側に配置され、
     前記無線通信装置の前方に配置された前記マイクロ発泡樹脂シートが、前記照明装置の筐体の一部として前記無線通信装置の電波放射面に接触するように配置されるか、前記無線通信装置の電波放射面から所定距離離間して配置され、
     前記マイクロ発泡樹脂シートは、光の拡散反射性に優れると同時に、前記基板や前記光透過部材と比較して比誘電率が低く電波透過性に優れる材料であることを特徴とする照明装置と無線通信装置の複合構造。
    A composite structure of a lighting device placed in front of a wireless communication device and a wireless communication device using a micro foam resin sheet,
    The lighting device includes:
    LED light source and
    a substrate that supports the LED light source;
    a light transmitting member;
    a frame member that supports the outer peripheral portion of the light transmitting member;
    A light-diffusing and reflective micro-foamed resin sheet,
    has
    By arranging the micro-foamed resin sheet having a concave cross-sectional shape behind the light-transmissive member supported by the frame member, the light-transmissive member and the micro-foamed resin sheet can be A light guide space is formed between the
    The light emitting surface of the LED light source faces the micro foam resin sheet and is oriented in a direction opposite to the light transmitting member so that the light emitted from the light emitting surface of the LED light source is reflected by the micro foam resin sheet. is placed,
    The wireless communication device is arranged on the back side of the light reflecting surface of the micro foam resin sheet,
    The micro foam resin sheet placed in front of the wireless communication device is placed in contact with the radio wave emitting surface of the wireless communication device as part of the casing of the lighting device, or placed at a predetermined distance from the radio wave emitting surface,
    The micro-foamed resin sheet is a material that has excellent light diffusion and reflection properties, and has a lower dielectric constant than the substrate and the light-transmitting member, and has excellent radio wave transparency. Complex structure of communication equipment.
  2.  前記無線通信装置の前方の電波放射面に対応する前記照明装置の中央部には前記無線通信装置からの電波の発信を阻害しないように、前記光透過部材、及び前記マイクロ発泡樹脂シートのみが配置され、前記照明装置のLED光源、基板、枠部材、及び筐体が配置されずに、前記照明装置のLED光源や基板、枠部材、筐体が照明装置の外周部に配置されることを特徴とする請求項1に記載の照明装置と無線通信装置の複合構造。 Only the light transmitting member and the micro foam resin sheet are arranged in a central part of the lighting device corresponding to a front radio wave emitting surface of the wireless communication device so as not to obstruct transmission of radio waves from the wireless communication device. and the LED light source, the board, the frame member, and the casing of the lighting device are arranged on the outer periphery of the lighting device, without the LED light source, the board, the frame member, and the casing being arranged. A composite structure of a lighting device and a wireless communication device according to claim 1.
  3.  前記無線通信装置の前方に配置された前記マイクロ発泡樹脂シートは平均気泡径が0.2μm~10μmのマイクロ発泡樹脂シートであり、前記マイクロ発泡樹脂シートは、波長450~650nmの可視光帯における硫酸バリウム標準板の拡散反射率を100%とすると、前記硫酸バリウム標準板に対する前記マイクロ発泡樹脂シートの拡散反射率が95%以上の前記照明装置の筐体を兼ねることが可能な光反射板であり、前記マイクロ発泡樹脂シートが前記無線通信装置の電波放射面に接触するように配置される場合と前記無線通信装置の電波放射面から所定距離離間して配置される場合を含めた、前記マイクロ発泡樹脂シートの比誘電率の測定をASTM D2520およびJIS C2565に規定される方法を用いて、測定周波数2GHzにて測定した場合の値が1.8以下であることを特徴とする請求項2に記載の照明装置と無線通信装置の複合構造。 The micro-foamed resin sheet placed in front of the wireless communication device is a micro-foamed resin sheet with an average cell diameter of 0.2 μm to 10 μm, and the micro-foamed resin sheet is made of sulfuric acid in a visible light band with a wavelength of 450 to 650 nm. If the diffuse reflectance of the barium standard plate is 100%, the micro-foamed resin sheet has a diffuse reflectance of 95% or more with respect to the barium sulfate standard plate, and is a light reflecting plate that can also serve as a casing of the lighting device. , the micro-foamed resin sheet includes cases where the micro-foamed resin sheet is placed in contact with a radio wave emitting surface of the wireless communication device and cases where the micro-foamed resin sheet is placed a predetermined distance away from the radio wave emitted surface of the wireless communication device. Claim 2, characterized in that the relative dielectric constant of the resin sheet is measured at a measurement frequency of 2 GHz using a method specified in ASTM D2520 and JIS C2565, and the value is 1.8 or less. A composite structure of lighting equipment and wireless communication equipment.
  4.  前記無線通信装置の前方に配置された前記マイクロ発泡樹脂シートは、平均気泡径が0.2~10μmであるため、拡散反射特性と誘電特性に優れ、電波透過損失が少ないだけでなく、電波の散乱損失も少ないことを特徴とする請求項3に記載の照明装置と無線通信装置の複合構造。 The micro-foamed resin sheet placed in front of the wireless communication device has an average cell diameter of 0.2 to 10 μm, so it not only has excellent diffuse reflection properties and dielectric properties, but also has low radio wave transmission loss. The composite structure of a lighting device and a wireless communication device according to claim 3, characterized in that scattering loss is also small.
  5.  前記光透過部材は、PC樹脂、ABS樹脂、PET樹脂、塩化ビニル樹脂、アクリル樹脂、ポリスチレン樹脂、COP樹脂、COC樹脂のいずれかの光透過性の透明樹脂又は透明ガラス、あるいは、前記透明樹脂に顔料を添加した半透明樹脂、前記透明樹脂の光取出し部側の表面を粗面化または微小な凹凸構造を形成することで半透明化した半透明樹脂、前記透明樹脂または前記透明ガラスの表面に半透明な樹脂フィルムを貼り付けた半透明積層体、あるいは半透明な着色ガラスのいずれかであることを特徴とする請求項1に記載の照明装置と無線通信装置の複合構造。 The light transmitting member is made of a light transmitting transparent resin such as PC resin, ABS resin, PET resin, vinyl chloride resin, acrylic resin, polystyrene resin, COP resin, or COC resin, or transparent glass, or the transparent resin. A semi-transparent resin to which a pigment has been added, a semi-transparent resin made translucent by roughening the surface of the transparent resin on the light extraction part side or forming a fine uneven structure, a surface of the transparent resin or the transparent glass. 2. The composite structure of a lighting device and a wireless communication device according to claim 1, wherein the structure is either a translucent laminate to which a translucent resin film is attached, or a translucent colored glass.
  6.  前記光透過部材の前面または背面の一部が着色塗料、金属蒸着、又は金属メッキによる薄膜状の被覆部材により被覆されているか、あるいは前記光透過部材の前面又は背面、あるいは前記光透過部材の略同一平面となる部位又は前記光透過部材の内部に、光非透過性の所定厚さを有する着色樹脂が配置されるか、あるいは前記光透過部材の一部に代えて、前記光透過部材と同一厚みの着色樹脂が配置されることを特徴とする請求項5に記載の照明装置と無線通信装置の複合構造。 A part of the front or back surface of the light transmitting member is covered with a thin film-like coating member made of colored paint, metal vapor deposition, or metal plating, or the front or rear surface of the light transmitting member, or an abbreviation of the light transmitting member. A colored resin having a predetermined thickness that is non-light-transmitting is placed on the same plane or inside the light-transmitting member, or a colored resin that is the same as the light-transmitting member is placed in place of a part of the light-transmitting member. 6. The composite structure of a lighting device and a wireless communication device according to claim 5, wherein a thick colored resin is disposed.
  7.  前記光透過部材の所定位置に前記被覆部材が設けられ、前記被覆部材が前記光透過部材の裏面に露出して形成されている場合には、前記被覆部材の裏面に直接前記被覆部材と同一の大きさの前記マイクロ発泡樹脂シートが貼り付けられ、前記被覆部材が前記光透過部材の裏面に露出していない場合には、前記光透過部材の裏面の前記被覆部材に対応する位置に前記被覆部材と相似形状で少し大きさが小さいか、あるいは被覆部材と同一の大きさの前記マイクロ発泡樹脂シートが貼り付けられることを特徴とする請求項6記載の照明装置と無線通信装置の複合構造。 When the covering member is provided at a predetermined position of the light transmitting member and the covering member is formed to be exposed on the back surface of the light transmitting member, the same material as the covering member is directly applied to the back surface of the covering member. When the micro foamed resin sheet of the same size is attached and the covering member is not exposed on the back surface of the light transmitting member, the covering member is placed on the back surface of the light transmitting member at a position corresponding to the covering member. 7. The composite structure of a lighting device and a wireless communication device according to claim 6, wherein the micro-foamed resin sheet having a similar shape and slightly smaller size or the same size as the covering member is attached.
  8.  前記光透過部材の一部が、着色塗料、金属蒸着、金属メッキ、所定厚さを有する光非透過性の着色樹脂のいずれかの前記被覆部材で被覆されているか、あるいは前記光透過部材の一部に前記光透過部材の代わりに所定厚さを有する光非透過性の着色樹脂が配置されている場合に、前記被覆部材で前記光透過部材が被覆されていない光透過部または前記着色樹脂が配置されていない光透過部から、光が取り出されることを特徴とする請求項6記載の照明装置と無線通信装置の複合構造。 A part of the light transmitting member is coated with the coating member selected from colored paint, metal vapor deposition, metal plating, or a non-light transmitting colored resin having a predetermined thickness, or one of the light transmitting members When a non-light-transmitting colored resin having a predetermined thickness is placed in place of the light-transmitting member in the part, the light-transmitting part where the light-transmitting member is not covered with the covering member or the colored resin is 7. The composite structure of a lighting device and a wireless communication device according to claim 6, wherein light is extracted from a light transmitting portion that is not arranged.
  9.  前記基板に配置された前記LED光源は、RGB光源、あるいは発光色をRGBに切り替え可能な1チップのLED光源、白色LED光源、昼光色のLED光源、蛍光体を利用した白色LED光源、白色または昼光色のLEDアレイ光源のいずれかあるいはこれらの光源を組み合わせたものであることを特徴とする請求項1記載の照明装置と無線通信装置の複合構造。 The LED light source arranged on the substrate is an RGB light source, a one-chip LED light source whose emission color can be switched to RGB, a white LED light source, a daylight LED light source, a white LED light source using a phosphor, white or daylight color. 2. The composite structure of a lighting device and a wireless communication device according to claim 1, characterized in that it is one of the following LED array light sources or a combination of these light sources.
  10.  前記LED光源の配向角の範囲内に、前記光透過部材から光が透過する光透過部が含まれないような配置とすることで、前記光透過部材が平板状または凹凸構造を有する曲面状に形成され、前記導光空間の光透過部側の形状が平板状または凹凸構造を有する曲面状に形成されたとしても、前記導光空間内で反射光が拡散多重反射されることで、前記照明装置から取り出される光が略均一な間接光のみからなることを特徴とする請求項1記載の照明装置と無線通信装置の複合構造。 By arranging the LED light source such that a light transmitting portion through which light is transmitted from the light transmitting member is not included within the orientation angle range of the LED light source, the light transmitting member may have a flat plate shape or a curved surface having an uneven structure. Even if the shape of the light-transmitting part side of the light-guiding space is formed into a flat plate shape or a curved surface having an uneven structure, the reflected light is diffused and multiple-reflected within the light-guiding space, so that the illumination 2. The composite structure of a lighting device and a wireless communication device according to claim 1, wherein the light extracted from the device consists only of substantially uniform indirect light.
  11.  前記光透過部材に設けられた前記被覆部材によって、前記光透過部が外周側と内周側に区分され、外周側と内周側の前記光透過部からの間接光が略同一輝度で取出されることを特徴とする請求項8に記載の照明装置と無線通信装置の複合構造。 The light transmitting portion is divided into an outer circumferential side and an inner circumferential side by the covering member provided on the light transmitting member, and indirect light from the light transmitting portions on the outer circumferential side and the inner circumferential side is extracted with substantially the same brightness. The composite structure of a lighting device and a wireless communication device according to claim 8.
  12.  前記照明装置が、屋外用の照明装置であり、前記無線通信装置が公園、道路、ビルの壁面又は屋上に設置され、歩行者や道路を走行する車両との間で通信を行う無線通信機であることを特徴とする請求項1から請求項11のいずれかに記載の照明装置と無線通信装置の複合構造。 The lighting device is an outdoor lighting device, and the wireless communication device is a wireless communication device that is installed on a park, a road, a wall or a rooftop of a building, and communicates with pedestrians and vehicles running on the road. A composite structure of a lighting device and a wireless communication device according to any one of claims 1 to 11.
  13.  前記無線通信装置が5G通信において使用される無線送信機であり、前記照明装置が広告用電子看板用照明装置あるいは案内用電子看板装置であることを特徴とする請求項1から請求項11のいずれかに記載の照明装置と無線通信装置の複合構造。 Any one of claims 1 to 11, wherein the wireless communication device is a wireless transmitter used in 5G communication, and the lighting device is a lighting device for an advertising electronic signboard or a guidance electronic signboard device. A composite structure of a lighting device and a wireless communication device according to claim 1.
  14.  前記照明装置が移動体に装着される照明装置であり、前記無線通信装置がミリ波レーダ用送信機であることを特徴とする請求項1から請求項11のいずれかに記載の照明装置と無線通信装置の複合構造。 The lighting device according to any one of claims 1 to 11, wherein the lighting device is a lighting device mounted on a moving object, and the wireless communication device is a millimeter wave radar transmitter. Complex structure of communication equipment.
  15.  波長70~100GHz帯における空気の電波吸収による電波減衰率に対するマイクロ発泡樹脂シートの電波減衰率の変化率が、0から-0.15dBの範囲に含まれるものであることを特徴とする請求項1に記載の照明装置と無線通信装置の複合構造。 Claim 1, characterized in that the rate of change in the radio wave attenuation rate of the micro-foamed resin sheet with respect to the radio wave attenuation rate due to radio wave absorption by air in the wavelength band of 70 to 100 GHz is within the range of 0 to -0.15 dB. A composite structure of a lighting device and a wireless communication device according to .
  16.  マイクロ発泡樹脂シートを用いた無線通信装置の前方に照明装置が配置される照明装置と無線通信装置との複合構造における照明装置と無線通信装置の配置方法であって、
     前記照明装置は、LED光源と、前記LED光源を支持する基板と、光透過部材と、光透過部材の外周部を支持する枠部材と、光拡散反射性のマイクロ発泡樹脂シートと、を有し、
     前記LED光源の発光面から出射される光が前記マイクロ発泡樹脂シートにより反射されるように、前記マイクロ発泡樹脂シートの断面形状が窪み状の凹形状に成形されることで、前記マイクロ発泡樹脂シートと前記光透過部材との間に導光空間が形成されるように、前記LED光源の発光面が前記マイクロ発泡樹脂シートに対向するように前記光透過部材と反対方向に向けて配置され、
     前記無線通信装置は、前記マイクロ発泡樹脂シートの光反射面の背面側に配置され、
     前記無線通信装置の前方に配置された前記マイクロ発泡樹脂シートが、前記照明装置の筐体の一部として前記無線通信装置の電波放射面に接触するように配置されるか、前記無線通信装置の電波放射面から所定距離離間して配置され、
     前記無線通信装置の前方の電波放射面の前方には、前記光透過部材のみが配置されるか、あるいは前記光透過部材と前記マイクロ発泡樹脂シートが配置されるかのいずれかであり、
     前記マイクロ発泡樹脂シートは、光拡散反射率に優れると同時に、前記基板や前記光透過部材と比較して比誘電率が1.8以下と低い電波透過性に優れる材料であり光反射板として用いられることを特徴とする照明装置と無線通信装置の配置方法。
    A method for arranging a lighting device and a wireless communication device in a composite structure of a lighting device and a wireless communication device, in which the lighting device is placed in front of a wireless communication device using a micro-foamed resin sheet, the method comprising:
    The lighting device includes an LED light source, a substrate supporting the LED light source, a light transmitting member, a frame member supporting an outer peripheral portion of the light transmitting member, and a light diffusing and reflecting microfoamed resin sheet. ,
    The micro-foamed resin sheet is formed so that the micro-foamed resin sheet has a concave cross-sectional shape so that the light emitted from the light emitting surface of the LED light source is reflected by the micro-foamed resin sheet. and the light transmitting member, the light emitting surface of the LED light source is arranged to face the micro foam resin sheet in a direction opposite to the light transmitting member, and
    The wireless communication device is arranged on the back side of the light reflecting surface of the micro foam resin sheet,
    The micro foam resin sheet placed in front of the wireless communication device is placed in contact with the radio wave emitting surface of the wireless communication device as part of the housing of the lighting device, or placed at a predetermined distance from the radio wave emitting surface,
    In front of the radio wave emitting surface in front of the wireless communication device, either only the light transmitting member is disposed, or the light transmitting member and the micro foam resin sheet are disposed,
    The micro-foamed resin sheet is a material that has excellent light diffusing reflectance and, at the same time, excellent radio wave transmittance with a relative dielectric constant of 1.8 or less compared to the substrate and the light transmitting member, and is used as a light reflecting plate. A method of arranging a lighting device and a wireless communication device, characterized in that:
  17.  前記マイクロ発泡樹脂シートが加熱成形または加熱を行わない成形により窪み状の凹形状に形成されたもので、断面視形状が窪み状の凹形状の中央部に平坦部を含む略U字型や逆台形状、おわん型のいずれかの形状に成形したものであり、成形前後の拡散反射反射率、比誘電率が同様であることを特徴とする請求項16に記載の照明装置と無線通信装置の配置方法。 The micro-foamed resin sheet is formed into a concave shape by heat molding or molding without heating, and the cross-sectional shape is approximately U-shaped or inverted, with a flat part in the center of the concave shape. 17. The lighting device and wireless communication device according to claim 16, wherein the lighting device and the wireless communication device are molded into either a trapezoidal shape or a bowl shape, and have the same diffuse reflection reflectance and dielectric constant before and after molding. Placement method.
  18.  請求項16または請求項17に記載の照明装置と無線通信装置の配置方法により、照明装置と無線通信装置との複合構造を配置することで得られる、拡散反射特性に優れると同時に電波の透過損失及び散乱損失に優れる照明装置付き無線通信装置。
     
    The method for arranging a lighting device and a wireless communication device according to claim 16 or 17 provides excellent diffuse reflection characteristics and radio wave transmission loss, which is obtained by arranging a composite structure of a lighting device and a wireless communication device. and a wireless communication device with a lighting device that has excellent scattering loss.
PCT/JP2023/021801 2022-06-10 2023-06-12 Composite structure of illumination device and wireless communication device, placement method for illumination device and wireless communication device, and illumination device-equipped wireless communication device placed by said placement method WO2023238959A1 (en)

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Publication number Priority date Publication date Assignee Title
JP2018082352A (en) * 2016-11-17 2018-05-24 古河電気工業株式会社 Light reflector, luminaire, and method for extracting sound from luminaire
JP2018137037A (en) * 2016-10-24 2018-08-30 古河電気工業株式会社 Fitting structure for led lighting device
JP2021099984A (en) * 2019-12-20 2021-07-01 スタンレー電気株式会社 Light-emitting unit and lamp device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018137037A (en) * 2016-10-24 2018-08-30 古河電気工業株式会社 Fitting structure for led lighting device
JP2018082352A (en) * 2016-11-17 2018-05-24 古河電気工業株式会社 Light reflector, luminaire, and method for extracting sound from luminaire
JP2021099984A (en) * 2019-12-20 2021-07-01 スタンレー電気株式会社 Light-emitting unit and lamp device

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