JP2011034713A - Luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire loaded with a visible light communication function advantageous in cost. <P>SOLUTION: This luminaire 10 includes a light emitting portion substrate 12 on which a semiconductor light emitting element 11 is disposed; a lighting circuit substrate 13 to control lighting of the semiconductor light emitting element; and a visible light communication control substrate 14 separately disposed connectably between the lighting circuit substrate and the light emitting portion substrate to perform visible light communication control of the semiconductor light emitting element of the light emitting portion substrate. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lighting apparatus equipped with a visible light communication function.

  In recent years, lighting fixtures equipped with a visible light communication function for transmitting various kinds of information to free space using illumination light have been proposed. For example, Patent Literature 1 discloses an illumination system including a lighting fixture equipped with a visible light communication function and a receiver, and a user while performing visible light communication using a white light source and a light bulb color light source of the lighting fixture. It is trying to provide a lighting environment that does not feel uncomfortable.

JP 2008-34989 A

  On the other hand, in this kind of lighting fixtures, it is necessary to prepare various lineups to meet various needs, but lighting fixtures equipped with visible light communication functions have been developed exclusively for visible light communication. Has been proposed. For this reason, as also indicated in Patent Document 1, a lighting circuit for a lighting fixture equipped with a visible light communication function is a dedicated lighting for superimposing a communication signal on illumination light in accordance with control from the control unit. It must be configured as a circuit and must be designed separately from the lighting circuit that does not have a visible light communication function. For this reason, the cost of the lighting fixture which mounts a visible light communication function rises, and has become a cause which hinders spread.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a lighting apparatus equipped with a visible light communication function that is advantageous in terms of cost.

  The invention of the lighting apparatus according to claim 1 includes: a light emitting unit substrate on which a semiconductor light emitting element is disposed; a lighting circuit substrate connected to the light emitting unit substrate to control lighting of the semiconductor light emitting element; a lighting circuit substrate and the light emitting unit substrate And a visible light communication control board that controls the visible light communication of the semiconductor light emitting element of the light emitting unit substrate.

  According to the present invention, the visible light communication control board is provided by the visible light communication control board that is separately disposed so as to be connectable between the lighting circuit board and the light emitting part substrate and controls the semiconductor light emitting element of the light emitting part substrate. A lighting fixture equipped with a visible light communication function can be configured by connecting between the lighting circuit board and the light emitting unit board. Moreover, the visible light communication control board can be separated from between the lighting circuit board and the light emitting unit board, and a lighting fixture dedicated to illumination not equipped with a visible light communication function can be configured. Thereby, the design of the lighting fixture which mounts a visible light communication function and the lighting fixture which is not mounted can be made common, and the lighting fixture which mounts the visible light communication function advantageous in cost can be comprised. At the same time, it is possible to easily configure various lighting fixtures by connecting or separating the visible light communication control board.

  In the present invention, the luminaire preferably constitutes a luminaire for facilities / businesses such as a general home or office that performs general illumination from the ceiling in order to perform visible light communication well in free space. It may be a lighting device installed on a wall surface, a floor surface or the like, and is not particularly limited to a specific type of lighting device.

  As the semiconductor light emitting element, a light emitting element using a semiconductor as a light emitting source, such as a light emitting diode, an organic EL, or a semiconductor laser, is allowed. The required number of semiconductor light emitting elements is selected according to the lighting application. For example, even if a panel-shaped light emitting unit is configured by a plurality of elements, a light emitting unit is configured by a single element. Also good. The semiconductor light emitting element is preferably configured to emit white light, but may be configured to be red, blue, green, or a combination of various colors depending on the use of the lighting fixture.

  The light emitting unit substrate is a substrate on which the above-described semiconductor light emitting element is disposed. The shape of the light emitting unit may be a square or a rectangular shape such as a rectangle, or a light emitting unit having a long line shape. Polygonal shapes such as rectangular and octagonal shapes, and circular or elliptical light-emitting portions may be configured, and all shapes for obtaining the desired light distribution characteristics are allowed.

  The lighting circuit board is a board for arranging circuit components and the like constituting the lighting circuit, and has a function of controlling the lighting of the semiconductor light emitting element arranged on the light emitting part board, and is directly connected to the light emitting part board. Thus, it is possible to configure a lighting fixture dedicated to lighting that does not have a visible light communication function. The shape of the lighting circuit board is not limited to a specific shape. Moreover, although it is preferable that it is comprised in the lighting fixture, or it is comprised externally, you may install in the ceiling back etc. separately. For example, the lighting circuit is allowed to be configured by a lighting circuit that converts an AC voltage of 100 V into a DC voltage of 24 V and supplies the converted voltage to a semiconductor light emitting element such as a light emitting diode. Moreover, you may have a light control function.

  The visible light communication control board is a board for arranging circuit components and the like that constitute a control unit for performing visible light communication. The visible light communication control board is separately disposed so as to be connectable between the lighting circuit board and the light emitting part board. By connecting the optical communication control board between the lighting circuit board and the light emitting unit board, it is possible to configure a lighting fixture equipped with a visible light communication function. Moreover, the visible light communication control board can be separated from between the lighting circuit board and the light emitting unit board, and a lighting fixture dedicated to illumination not equipped with a visible light communication function can be configured.

  Here, the separation arrangement is preferably configured by separating the visible light communication control board separately from the light emitting unit board and the lighting circuit board, for example, one board. A light emitting unit, a lighting circuit unit, and a visible light communication control unit are separately separated on the top, and the substrate can be cut along a detachable cut as necessary, so that only the visible light communication control unit is emitted. Further, it may be easily separable from the lighting circuit portion. Furthermore, each board configured separately is mechanically connected simultaneously with a connecting means such as a connector, which is separable, and each board is integrated in a state where it can be separated by the connecting means, and visible light communication control is performed. Only the substrate may be removed from the connection means of the light emitting unit substrate and the lighting circuit substrate so that electrical separation and mechanical separation can be performed at the same time. All separable arrangement means that only the communication control board can be separated are allowed. Further, the shape of the visible light communication control board is not limited to a specific shape. Furthermore, although it is preferable that it is built in or externally attached to the lighting fixture, it may be installed separately on the ceiling or the like.

  The visible light communication control board is provided with a control unit and a switching element, and the switching element intermittently controls lighting of the semiconductor light emitting element in order to transmit a visible light communication signal according to a control signal from the control unit. Even if the control unit generates a control signal for the switching element based on information stored in a storage unit such as a nonvolatile memory, a signal from an external device such as an information terminal device such as a personal computer, a remote controller, or a mobile phone May be received to generate a control signal. Furthermore, the control signal may be generated by obtaining information from the Internet through a LAN, and is not limited to a specific means.

  The light emitting unit substrate, the lighting circuit substrate, and the visible light communication control substrate described above are, for example, non-metallic members such as glass epoxy materials, paper phenol materials, glass composites, or circuits made of metals such as aluminum and copper. A wiring board is allowed. Further, if it is advantageous in terms of cost, it may be made of ceramics. A wiring pattern is formed on these substrates, and it is preferable that, for example, a light-emitting diode chip or a circuit component is mounted on the wiring pattern. However, the means for configuring and mounting the substrate is specified. It is not limited to those.

  According to a second aspect of the present invention, in the lighting fixture according to the first aspect, the lighting circuit board has an output terminal portion of a power source, and the visible light communication control board is supplied with power from the output terminal portion of the lighting circuit board. It is made to be made to be done. According to the present invention, when a visible light communication control board is connected between a lighting circuit board and a light emitting part board to constitute a lighting fixture equipped with a visible light communication function, the visible light communication control board is a lighting circuit board. Since the power is supplied from the output terminal section, the power supply section dedicated to the visible light communication control board is not required, the structure of the visible light communication control board can be simplified, and the visible cost is more advantageous in terms of cost. A lighting fixture equipped with an optical communication function can be configured.

  In the present invention, the power supplied from the output terminal portion of the lighting circuit board is preferably capable of outputting a logic power source used for an IC on the lighting circuit board, but is designed exclusively for performing visible light communication control. It may be a power source.

  According to a third aspect of the present invention, in the luminaire according to the first or second aspect, the visible light communication control board includes a switching element that is switched by the control unit, and the switching element is a semiconductor light emitting element of the light emitting part substrate. Are connected in parallel to each other. According to the present invention, when a visible light communication control board is connected between a lighting circuit board and a light emitting part board to constitute a lighting fixture equipped with a visible light communication function, the switching element is a semiconductor light emitting device of the light emitting part substrate. The device was connected in parallel. Thereby, when the light emitting unit is turned on, an electrical loss in the switching element is reduced, and a lighting fixture equipped with an efficient visible light communication function can be configured.

  In the present invention, the switching element is an element for intermittently interrupting the semiconductor light emitting element for visible light communication signal transmission, and is preferably composed of a semiconductor switching element such as a transistor. It may be configured by.

  According to the first aspect of the present invention, it is possible to share the design of a lighting fixture that has a visible light communication function and a lighting fixture that is not mounted, and provide a lighting fixture that has a visible light communication function that is advantageous in terms of cost. can do. At the same time, it is possible to easily configure various lighting fixtures by connecting or disconnecting the visible light communication control board.

  According to the second aspect of the present invention, the power supply unit dedicated to the visible light communication control board is not required, the structure of the visible light communication control board can be simplified, and the visible light communication function advantageous in terms of cost is mounted. A luminaire can be provided.

  According to the third aspect of the present invention, it is possible to provide a lighting fixture equipped with an efficient visible light communication function with less loss in the switching element when the light emitting unit is turned on.

The block diagram which shows the light emission part board | substrate, lighting circuit board, and visible light communication control board in the lighting fixture carrying the visible light communication function which concerns on embodiment of this invention. The lighting fixture which similarly mounts a visible light communication function is shown, (a) is a top view, (b) is sectional drawing which follows the AA line in (a) figure. Similarly, the lighting fixture only for illumination which does not carry a visible light communication function is shown, (a) is a block diagram which shows a light emission part substrate and a lighting circuit board, and (b) is a sectional view equivalent to Drawing 2 (b) of a lighting fixture. The block diagram which shows the outline | summary of the wireless LAN system similarly constructed | assembled using the lighting fixture carrying a visible light communication function. The modification of the lighting fixture which similarly mounts a visible light communication function is shown, (a) is a block diagram which shows the light emission part board | substrate, lighting circuit board, and visible light communication control board in a 1st modification, (b) is 2nd. The block diagram which shows the light emission part board | substrate, lighting circuit board | substrate, and visible light communication control board in a modification of (a), (c) is the block diagram which shows the light emission part board | substrate, lighting circuit board | substrate, and visible light communication control board in a 3rd modification. The 4th modification of the lighting fixture which similarly mounts a visible light communication function is shown, (a) is a block diagram which shows a light emission part board | substrate, a lighting circuit board, and a visible light communication control board, (b) is a lighting circuit board and visible. The figure which shows the structure of the connector in an optical communication control board partly in cross section.

  Hereinafter, embodiments of a lighting apparatus according to the present invention will be described with reference to the drawings.

  In this embodiment, it is possible to configure a lighting fixture equipped with a visible light communication function, and it is also possible to easily construct a lighting fixture dedicated to illumination that is not mounted. First, the control portion will be described.

  As shown in FIG. 1, the control part in the lighting fixture 10 of a present Example is the light emission part board | substrate 12 which arrange | positioned the semiconductor light emitting element 11, the lighting circuit board 13 connected to a light emission part board | substrate, a lighting circuit board, The visible light communication control board 14 is arranged so as to be connectable with the light emitting unit board.

  The light emitting element 11 is composed of a light emitting diode (hereinafter referred to as “LED”). In this embodiment, the LED 11 is composed of a blue LED chip and a yellow phosphor excited by the LED chip, and emits white light with high brightness and high output.

  The light emitting unit substrate 12 is a member for disposing the LEDs 11, is composed of a circuit wiring substrate made of a glass epoxy material, and is formed in a flat plate shape having a substantially square shape. A wiring pattern made of copper foil is formed on the circuit wiring board, and a plurality of LEDs 11 are mounted along the wiring pattern. Each LED 11 is connected in series, and both ends thereof are connected to an input terminal 12 a provided on one side surface of the light emitting unit substrate 12.

  The lighting circuit board 13 is a board for arranging circuit components and the like for constituting a lighting circuit for lighting each LED 11, and is arranged separately from the light emitting unit board 12. The lighting circuit board 13 is composed of a circuit wiring board made of a glass epoxy material, similarly to the light emitting unit board 12, and is formed in a rectangular flat plate shape. A wiring pattern made of copper foil is formed on the circuit wiring board, and circuit components and the like constituting the lighting circuit are mounted along the wiring pattern.

  The lighting circuit is composed of a lighting circuit that converts an AC voltage of 100 V into a DC voltage of 24 V and supplies the converted voltage to the LED 11. An input terminal 13 a connected to a commercial power source is on one side of the lighting circuit board 13, and an output terminal 13 b is on the other side. Is provided.

  The lighting circuit board 13 configured as described above can control the lighting of each LED 11 disposed on the light emitting unit substrate 12 by connecting the output terminal 13b and the input terminal 12a of the light emitting unit substrate 12, so that the visible circuit is visible. An illumination-only lighting fixture that does not have an optical communication function can be configured.

  The visible light communication control board 14 is a board for arranging circuit components and the like for performing visible light communication, and is arranged separately from the light emitting unit board 12 and the lighting circuit board 13. The visible light communication control board 14 is composed of a circuit wiring board made of a glass epoxy material, like the light emitting part board 12 and the lighting circuit board 13, and is formed in a flat plate shape having a substantially square shape. A wiring pattern made of copper foil is formed on the circuit wiring board, and circuit components and the like for performing visible light communication control are mounted along the wiring pattern.

  The visible light communication control board 14 is provided with a control unit 14a, a storage unit 14b composed of a nonvolatile memory, a switching element 14c, and a control unit power generation unit 14d. In the storage unit 14b, operation information for turning ON / OFF the lighting fixture, various dimming control information, and various information such as audio information and video information such as music and movies are converted into digital signals and stored. Has been. The control unit 14a has a function of intermittently interrupting the switching element 14c by calling the information stored in the storage unit 14b, generating a control signal for the switching element 14c, and transmitting the control signal to the switching element 14c. is doing. When the switching element 14c is intermittently interrupted, each LED 11 of the light emitting unit substrate 12 performs a blinking operation, and a visible light communication signal is transmitted from each LED.

  In the figure, reference numeral 14e denotes a signal receiving unit that receives a signal from an external device such as an infrared transmission remote controller. For example, the signal receiving unit receives a signal from the remote control and transmits the signal to the control unit, and performs ON / OFF of the lighting fixture and light control. Reference numeral 14f denotes a LAN terminal which is connected to the Internet via a modem, obtains various information from the Internet, transmits the information to the control unit 14a, and transmits this information as a visible light communication signal.

  The visible light communication control board 14 is provided with an input terminal 14g connected to the output terminal 13b of the lighting circuit board 13 on one side and an output terminal 14h on the other side.

  The visible light communication control board 14 configured as described above connects the input terminal 14g and the output terminal 13b of the lighting circuit board, and connects the output terminal 14h and the input terminal 12a of the light emitting part board 12 to thereby form the light emitting part board. An output signal intermittently cut off from the switching element 14c is transmitted to each LED 11 disposed in 12, and each LED flashes to transmit a visible light communication signal to free space. Thereby, the lighting fixture 10 carrying a visible light communication function can be comprised.

  Further, by disconnecting each terminal and separating the visible light communication control board 14 from between the lighting circuit board 13 and the light emitting part board 12, the output terminal 13b of the lighting circuit board 13 and the input terminal 12a of the light emitting part board 12 are separated. Can be directly connected to each other, and a lighting fixture dedicated to lighting without a visible light communication function can be configured.

  Next, the structure of the lighting fixture incorporating the control part comprised above is demonstrated. As shown in FIG. 2, the luminaire 10 is configured as a ceiling-embedded panel-shaped luminaire having a square shape in this embodiment, and includes a luminaire 20, a light-emitting panel 21 disposed on the luminaire, and a luminaire. 20 includes a control unit 22 and a power supply unit 23 incorporated in the system 20.

  The instrument body 20 is configured as a substantially square box having a bottom surface 20a and an opening 20b with a synthetic resin having weather resistance, heat resistance and electrical insulation, in this embodiment, white PBT (polybutylene terephthalate). The opening size of the opening 20b of the box is configured such that four square light emitting panels 21 are disposed on the inner peripheral side of the square box, and the light emitting panel 21 is inserted into the box. The lighting fixture 10 which makes a substantially square with the light emission panel 21 is comprised by these. In the figure, reference numeral 24 denotes a control unit 22 formed by cutting out a central portion constituted by four light-emitting panels, that is, a housing unit for the visible light communication control board 14, and is closed by a detachable lid 24a. Can be removed.

  The four light emitting panels 21 have the same shape and configuration, and each light emitting panel is provided with the light emitting unit substrate 12 and the reflector 21a described above. The light emitting unit substrate 12 is mounted on a heat radiating plate 21b formed on a square having the same dimensions as the light emitting unit substrate 12 through an electrical insulating sheet or the like, and a reflector 21a is provided on the surface side on which the LED 11 is mounted. . The heat radiating plate 21b is composed of a steel plate having good thermal conductivity, a metal such as aluminum, or a steel plate in this embodiment. A plurality of LED chips 11 are arranged in a matrix on each of the four light emitting unit substrates 12, and each of the plurality of LEDs 11 is connected in series by a wiring pattern, and further to each of the four light emitting units 12. The plurality of LED groups arranged respectively are connected in series by lead wires, and all the LEDs 11 are connected in series.

  The reflector 21a is optically designed to obtain a desired light distribution, and is made of a synthetic resin having weather resistance, heat resistance and electrical insulation, in this example, white PBT (polybutylene terephthalate), The light emitting unit substrate 12 is configured as a square member having the same dimensions. Further, the appearance of the surface has a pyramid shape, a square-shaped "mortar-shaped" concave portion, each LED 11 mounted on the light emitting unit substrate 12 is located at the center of the bottom opening, and the reflection surface thereof is The LED chip is disposed so as to surround the periphery.

  The light emitting panel 21 configured as described above is fitted and fixed to the opening 20b of the instrument body 20 so that the reflector 21a faces outward from the opening. As a result, a space portion s is formed between the light emitting panel 21 and the bottom surface 20a of the instrument body 20. This space part is a space for installing and accommodating the control part 22 and the power supply part 23. The control part 22 is installed in the accommodating part 24 continuous with the substantially central part, and the power supply part 23 is located on one side surface side. Is installed.

  The control unit 22 includes the visible light communication control board 14 described above, and is fixed so that the board faces the housing part 24 with respect to the bottom surface 20 a of the instrument body 20. Further, the signal receiving unit 14e is installed on the inner surface side of the lid 24a of the housing unit 24 so as to receive a signal from an external device such as a remote controller. Further, the LAN terminal 14 f is disposed so as to be exposed to the outside from the bottom surface 20 a of the instrument body 20. The power supply unit 23 includes the lighting circuit board 13 described above, and this board is fixed to the bottom surface 20 a of the instrument body 20.

  As described above, the power supply line w1 connected to the commercial power supply is connected to the input terminal 13a of the lighting circuit board 13 provided in the space portion s of the fixture body 20, and the output terminal 13b is visible light communication by the lead wire w2. The input terminal 14g of the control board 14 is connected. Furthermore, the output terminal 14h of the visible light communication control board 14 is connected to the input terminal 12a of the light emitting unit board 12 disposed on the light emitting panel 21 by a lead wire w3. As a result, the visible light communication control board 14 is separately disposed so as to be electrically connectable between the lighting circuit board 13 and the light emitting unit board 12 on which the LEDs 11 are arranged.

  At this time, since the visible light communication control board 14 is accommodated in the accommodating portion 24 that is continuous with the substantially central portion of the space portion s of the instrument main body 20, the visible light communication control substrate 14 is separated from the heat radiating plate 21 b of the light emitting panel 21. Therefore, it is difficult to be affected by heat, and the temperature rise in the electronic component such as a semiconductor constituting the visible light communication control unit can be suppressed to improve the reliability of the component. .

  The lighting fixture 10 equipped with the visible light communication control function is configured as described above. In the present embodiment, the visible light communication control board 14 is separately disposed so as to be electrically connectable between the lighting circuit board 13 and the light emitting unit board 12 on which the LEDs 11 are arranged. Is separated from between the lighting circuit board 13 and the light emitting unit board 12, it is possible to configure a lighting fixture dedicated to illumination that does not have a visible light communication function.

  That is, as shown in FIG. 3, when configuring a lighting fixture 10 ′ dedicated to lighting, the lead wire w <b> 2 connected to the input terminal 14 g of the visible light communication control board 14 and the output terminal 13 b of the lighting circuit board 13 is connected. Further, the lead wire w3 connected to the output terminal 14h of the visible light communication control board 14 and the input terminal 12a of the light emitting unit board 12 is removed, and the visible light communication control board 14 is removed from the bottom surface 20a of the instrument body 20. Next, the lead wire w <b> 2 connected to the output terminal 13 b of the removed lighting circuit board 13 is directly connected to the input terminal 12 a of the light emitting board 12. As a result, the LEDs 11 of the light emitting unit substrate 12 can be lit and controlled by the lighting circuit of the lighting circuit substrate 13 directly, and a lighting fixture 10 ′ dedicated to lighting is configured.

  Therefore, in the design of the luminaire 10 equipped with the visible light communication control function, the design of the luminaire can be performed in common with the luminaire 10 ′ not equipped, and only the visible light communication control board 14 is designed. In addition, in the manufacturing process, a single visible light communication control board 14 for performing visible light communication is added and incorporated in a manufacturing line for a lighting fixture 10 ′ dedicated for lighting that does not have a visible light communication control function. The mounted lighting fixture 10 can be manufactured, or in the production line of the lighting fixture 10 equipped with the visible light communication control function, the lighting dedicated lighting fixture 10 ′ that is not mounted only by not incorporating the visible light communication control board 14 is used. It is possible to manufacture a lineup of two types of lighting fixtures at the same time.

  Next, a configuration of a wireless LAN system that performs visible light communication using the lighting fixture 10 equipped with the visible light communication control function configured as described above will be described. As shown in FIG. 4, the wireless LAN system 30 includes a personal computer PC that is an external device within a light irradiation range of a lighting fixture in which a lighting fixture 10 equipped with a visible light communication control function is installed on the ceiling X of the room. , A printer P and a remote controller R are installed.

  The lighting fixture 10 equipped with the visible light communication control function is installed on the ceiling, and the input terminal 13a of the lighting circuit board 13 is connected to a commercial power source by the power line w1. As a result, power is supplied to the lighting circuit board 13, power is supplied from the input terminal 14g of the visible light communication control board 14 to the control unit power generation unit 14d through the lead wire w2 from the output terminal 13b of the lighting circuit board, and visible. The optical communication control board 14 is set to the standby state. At the same time, the LAN terminal 14f is connected to the Internet N via a modem.

  The personal computer PC and the printer P are equipped with a receiver 31 that receives illumination light from the lighting fixture 10. This receiver operates a personal computer PC and a printer P by amplifying and demodulating a visible light communication signal contained in the received illumination light and a photoelectric conversion element such as a photodiode that receives the illumination light, and demodulating the received light. It has a function to make it. In addition, an infrared transmitter similar to the remote controller R is incorporated in the personal computer PC, and various signals can be transmitted to the signal receiver 14e of the lighting fixture 10.

  With the above configuration, the configured wireless LAN system 30 using visible light communication operates as follows. First, the remote controller R transmits a signal for operating the lighting fixture 10. This is received by the signal receiver 14e installed at the center of the lower surface of the luminaire, and the received signal is transmitted to the controller 14a. Based on the transmitted signal, the control unit reads the ON signal from the storage unit 14b, generates a continuous lighting signal, and transmits it to the switching element 14c. The switching element continues to turn on the switch based on the continuous lighting signal, and the LED 11 of the light emitting unit substrate 12 performs predetermined illumination in a state of continuous lighting.

  In this state, when the personal computer PC is operated and printing is performed by the printer P installed on the LAN system, first, a print signal is transmitted from the infrared transmission unit of the personal computer PC to the signal reception unit 14e of the lighting apparatus 10. Send to. This is received by the signal receiver 14e installed at the center of the lower surface of the luminaire, and the received signal is transmitted to the controller 14a. The control unit reads a print signal from the storage unit 14b based on the transmitted signal, generates a print signal based on the duty ratio of the digitized print signal, and transmits the print signal to the switching element 14c. The switching element turns on / off the switch based on the transmitted duty ratio to blink the LED 11 of the light emitting unit substrate 12. The LED superimposes a blinking signal with a predetermined duty ratio on the illumination light and transmits a visible light communication signal to free space.

  The visible light communication signal is received by the photoelectric conversion element of the receiver 31 in the printer P, the visible light communication signal included in the illumination light is amplified and demodulated to generate a print signal, the printer P is operated, and predetermined printing is performed. Do.

  Next, when a movie or the like is viewed on the personal computer PC, a predetermined image display request signal is transmitted from the infrared transmission unit. This is received by the signal receiver 14e of the luminaire 10, and the received signal is transmitted to the controller 14a. The control unit reads a predetermined movie stored in the storage unit 14b based on the transmitted image display request signal, generates an image signal and an audio signal based on the duty ratio of the digitized video signal and audio signal, and performs switching. Transmit to element 14c. The switching element turns on / off the switch based on the transmitted duty ratio to blink the LED 11 of the light emitting unit substrate 12. The LED 11 superimposes a blinking signal with a predetermined duty ratio on the illumination light and transmits a visible light communication signal to the free space.

  The visible light communication signal is received by the photoelectric conversion element of the receiver 31 in the personal computer PC, and the visible light communication signal included in the illumination light is amplified and demodulated to generate an image signal and an audio signal. And the sound is output from the speaker.

  In the above description, information on a movie or the like is extracted from information stored in the storage unit 14b of the visible light communication control board 14 of the lighting fixture 10, but various information can be obtained via the Internet N. Furthermore, mail communication using a telephone line such as ISDN can also be performed by visible light communication by the lighting fixture 10 equipped with a visible light communication function.

  As described above, according to the present embodiment, the visible light communication control board 14 for controlling the visible light communication is separately disposed so as to be connectable between the lighting circuit board 13 and the light emitting unit board 12. The lighting fixture 10 equipped with a visible light communication function can be configured by connecting between the lighting circuit board 13 and the light emitting unit board 12. Further, the visible light communication control board 14 can be separated from the lighting circuit board 13 and the light emitting unit board 12 to constitute a lighting fixture 10 ′ dedicated for illumination that does not have a visible light communication function.

  Thereby, in the design of the lighting fixture 10 equipped with the visible light communication control function, the design of the fixture is performed in common with the lighting fixture dedicated for lighting not equipped with the visible light communication control function, and only the design of the visible light communication control board is performed. It can be achieved by performing, and the lighting fixture 10 equipped with the visible light communication control function advantageous in cost can be provided. At the same time, it is possible to easily configure various types of lighting fixtures by a simple operation by connecting or separating the visible light communication control board 14.

  In addition, since the visible light communication control board 14 for controlling visible light communication is separately arranged so as to be connectable between the lighting circuit board 13 and the light emitting unit board 12, the degree of freedom for arranging each board in the lighting fixture is increased. In addition, it becomes possible to effectively utilize and arrange the limited space of the lighting fixture composed of a narrow space, and it is possible to provide an LED lighting fixture capable of achieving further downsizing of the fixture. In particular, according to the present embodiment, the visible light communication control board 14 on which expensive electronic components for controlling visible light communication and the like are mounted is separated from the light emitting part board 12 and the lighting circuit board 13, and separated from the fixture body 20. It can accommodate and arrange | position in the accommodating part 24 which follows the substantially center part of the space part s. For this reason, since it arrange | positions away from the heat sink 21b of the light emission panel 21 which mounts many LED and becomes high temperature, and is also spaced apart from the power supply part 23, it becomes difficult to receive a thermal influence and becomes the temperature in an electronic component. It is possible to suppress the rise and improve the reliability of the parts. In particular, by arranging the visible light communication control board 14 and the light emitting unit board 12 having the heat radiating plate 21b for radiating the heat of the LEDs 11 so as not to face each other, the temperature rise of the visible light communication control board 14 can be suppressed. it can. At the same time, the signal receiver 14e of the visible light communication control board 14 can be installed at the center of the lower surface of the instrument body 20, and the reception function in infrared communication can be improved.

  As described above, in this embodiment, the visible light communication control board 14 is provided with the control unit power generation part 14d. However, as shown in FIG. 5A, the lighting circuit board 13 is connected to an IC on the lighting circuit board. An output terminal unit 13 b ′ that can output a logic power supply to be used may be provided, and the visible light communication control board 14 may be supplied with power from the output terminal part of the lighting circuit board 13.

  According to this, the control unit power generation unit 14d of the visible light communication control board 14 is not required, the configuration of the visible light communication control board can be simplified, and the visible light communication function advantageous in terms of cost is mounted. A lighting fixture 10 can be provided.

  Further, the switching element 14c of the visible light communication control board 14 is connected between the output terminals 14h of the visible light communication control board 14 and is switched when the light emitting unit board 12 is connected, as shown in FIG. The element 14c may be connected to the LED 11 in parallel. According to this, since the current does not flow through the switching element 14c during normal lighting of the LED 11 that does not operate visible light communication, an electrical loss in the switching element is reduced, and an efficient visible light communication function is mounted. The luminaire can be configured. 5C shows a switching element 14c when the visible light communication control board 14 is supplied with power from the output terminal portion 13b ′ of the lighting circuit board 13, as in FIG. 5A. Is configured to be connected in parallel to the LED 11, which simplifies the configuration and constitutes a lighting fixture equipped with an efficient visible light communication function without electrical loss. be able to.

  Further, as shown in FIG. 6, a female connector 13b is provided at the output terminal of the lighting circuit board 13, and a pin-shaped male connector 14g is provided at the input terminal of the visible light communication control board 14. The lighting fixture 10 equipped with the visible light communication function may be configured by performing mechanical connection at the same time as the mechanical connection and integrating the substrates in a state where they can be separated by the connector and arranging them in the fixture body 20. The output terminal 14h of the visible light communication control board 14 is configured as a female connector, and the input terminal 12a of the light emitting unit board 12 is configured as a male connector.

  Accordingly, by removing only the visible light communication control board 14 from the respective connectors of the lighting circuit board 13 and the light emitting unit board 12, electrical separation can be performed simultaneously with mechanical separation, and visible light communication can be performed. It is possible to more easily configure a lighting fixture dedicated to lighting that is not equipped with a function.

  In FIGS. 5 and 6 showing the modified examples, the same parts as those in FIGS. 1 to 4 are denoted by the same reference numerals, and detailed description thereof is omitted. Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Lighting fixture 11 Semiconductor light emitting element 12 Light emission part board | substrate 13 Lighting circuit board 14 Visible light communication control board

Claims (3)

A light emitting unit substrate on which a semiconductor light emitting element is disposed;
A lighting circuit board connected to the light emitting unit board and controlling the lighting of the semiconductor light emitting element;
A visible light communication control board that is disposed so as to be connectable between the lighting circuit board and the light emitting part substrate and controls visible light communication of the semiconductor light emitting element of the light emitting part substrate;
The lighting fixture characterized by comprising. The lighting device according to claim 1, wherein the lighting circuit board has an output terminal portion of a power source, and the visible light communication control board is supplied with power from the output terminal portion of the lighting circuit board. The said visible light communication control board has a switching element switched by a control part, and the switching element was connected in parallel with the semiconductor light emitting element of the light emission part board | substrate. Lighting fixtures.

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