JP2018195994A - Lighting control device and lighting device including the same - Google Patents

Abstract

To provide a lighting control device which enables improvement of communication quality of an antenna to be easily achieved even if the antenna is housed within a metal housing.SOLUTION: A lighting control device 10 includes: a metal housing 22 in which a first slit S1 extending in a first direction and a second slit S2 extending in a direction different from the first direction are formed on an upper wall surface 28; an antenna 14 which is housed within the housing 22 and is rotatably provided; and a control part which controls an operation state of a light source on the basis of an external signal received by the antenna 14. The antenna 14 can rotate to a first position in which the antenna 14 faces the first slit S1 and a second position in which the antenna 14 faces the second slit S2.SELECTED DRAWING: Figure 2

Description

  The present disclosure relates to a lighting control device and a lighting fixture including the lighting control device.

  2. Description of the Related Art Conventionally, a lighting system that receives a signal wirelessly from a remote controller and controls lighting, extinction, dimming, and the like of a lighting fixture based on this signal is known.

  For example, Patent Literature 1 discloses an illumination control device used in such an illumination system. The illumination control device includes a housing having a movable portion that can be displaced to a second position where the electric field level is different from the electric field level at the first position, an antenna fixed to a portion inside the housing of the movable portion, And a control unit that is connected to the antenna and controls the state of the control unit of the luminaire based on a signal transmitted through the antenna. According to this configuration, it is described that the illumination control device can easily adjust the electric field level of the antenna provided in the housing.

JP 2007-287679 A

  In the illumination control device disclosed in Patent Document 1, the electric field level of the antenna is adjusted by sliding and rotating the antenna inside a casing that is at least partially formed of a dielectric material such as plastic.

  However, in an illumination control device, an antenna may be housed inside a metal housing. In this case, since radio waves are reflected from the outer surface of the metal casing and do not reach the inside of the casing, there is a problem that communication quality cannot be improved even if the antenna is displaced inside the casing.

  An object of the present disclosure is to provide an illumination control device that can easily improve communication quality of an antenna even if the antenna is housed in a metal casing.

  An illumination control device according to the present disclosure includes a metal housing in which a first slit extending in a first direction and a second slit extending in a direction different from the first direction are formed on an outer wall surface, and the housing And an antenna that is rotatably provided and a control unit that controls the operating state of the light source based on an external signal received by the antenna. The antenna is pivotable between a first position facing the first slit and a second position facing the second slit.

  According to the illumination control device according to the present disclosure, it is possible to easily improve the communication quality of the antenna even if the antenna is housed in a metal casing.

It is a schematic block diagram of the illumination system containing the illumination control apparatus which is one Embodiment. It is a perspective view of an illumination control device. It is (a) top view and (b) front view of a radio module including an antenna. (A) is a figure which shows the state which has arrange | positioned the wireless module in the 1st position corresponding to a 1st slit, (b) is a figure which shows the state which has arrange | positioned the wireless module in the 2nd position corresponding to a 2nd slit. It is a figure which shows the electromagnetic wave intensity in the antenna horizontal surface at the time of 1st slit use and 2nd slit use, and an antenna vertical surface. In a lighting control device installed on a ceiling with a metal beam, (a) is a diagram showing a relationship with radio wave intensity when the antenna is arranged at the first position, and (b) is a diagram showing the relationship between the antenna and the antenna. It is a figure which shows the relationship with the electromagnetic wave intensity when arrange | positioning in 2 positions. It is a figure which shows the modification by which three slits were formed in the upper wall surface of the housing | casing of an illumination control apparatus. It is a figure which shows the modification by which two slits were formed in the different positional relationship in the upper wall surface and lower wall surface of the housing | casing of an illumination control apparatus. It is a fragmentary perspective view which shows the example in which the 2nd slit is formed ranging from the upper wall surface of the housing | casing of a lighting control apparatus to a side wall surface. It is a bottom view which shows the lighting fixture with which the illumination control apparatus was provided integrally. FIG. 10A is a diagram showing an example in which four slits are formed on the upper wall surface of the illumination control device in FIG. 9, and FIG. 9B is an example in which the second slit is formed by bending in a substantially U shape. FIG. It is a figure which shows the example in which two slits are formed in the side wall surface of a lighting control apparatus in the lighting fixture with which the lighting control apparatus was provided integrally.

  Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. In this description, specific shapes, materials, numerical values, directions, and the like are examples for facilitating understanding of the present disclosure, and can be appropriately changed according to the application, purpose, specification, and the like. In addition, when a plurality of embodiments and modifications are included in the following, it is assumed from the beginning that these characteristic portions are used in appropriate combinations.

  FIG. 1 is a schematic configuration diagram of a lighting system 1 including a lighting control apparatus according to an embodiment.

  The lighting system 1 includes a remote controller 2, lighting control devices 10 (1), 10 (2),..., 10 (n-1), 10 (n), and lighting fixtures L1, L2,. Ln-1 and Ln are provided. Here, n is an integer of 4 or more.

  Each lighting control device 10 (1), 10 (2),..., 10 (n-1), 10 (n) is connected to the lighting fixtures L1, L2,. Each is connected. Each illumination control device 10 (1), 10 (2),..., 10 (n−1), 10 (n) can have the same configuration. Therefore, in the following, it is simply referred to as “lighting control device 10”. Similarly, the lighting fixtures L1, L2,..., Ln−1, Ln are also simply referred to as “lighting fixture L”. In addition, the illumination control apparatus 10 may be comprised separately from the lighting fixture L, or may be comprised with the lighting fixture L in combination.

  The luminaire L includes a light source including a light emitting element such as an LED (Light Emitting Diode). The light source is turned on by power (for example, direct current power) supplied from the illumination control device 10 via the electric wire 12 and turned off when the power is cut off. Moreover, the illumination control apparatus 10 can adjust the electric power (for example, direct current) supplied to a lighting fixture, and can adjust the light emission intensity of a light source by this (namely, light control).

  Note that the light emitting element constituting the light source is not limited to the LED, and may be, for example, an EL element such as an organic EL (Electro Luminescence) or an inorganic EL, or a semiconductor laser element.

  The illumination control device 10 includes an antenna 14, a radio unit 16, and a control unit 18. As will be described later, the antenna 14 and the radio unit 16 are integrally mounted on a circuit board and electrically connected to each other. The wireless unit 16 is electrically connected to the control unit 18 accommodated in the housing 22 via an electric wire or wiring 17.

  The remote controller 2 transmits a setting signal (external signal) for setting how the lighting control device 10 controls the lighting fixture L (for example, dimming level) to the lighting control device 10 wirelessly. The remote controller 2 may be a fixed switch installed on a building wall or the like, or may be a mobile terminal such as a smartphone or a tablet.

  In the illumination control device 10, the antenna 14 can be configured by, for example, an inverted F antenna or a chip antenna. The antenna 14 receives a radio wave transmitted by the remote controller 2 and inputs the received radio wave to the wireless unit 16.

  The wireless unit 16 extracts a setting signal from the radio wave input from the antenna 14 and inputs the extracted setting signal to the control unit 18 via the electric wire or wiring 17.

  The control unit 18 controls the operating state of the lighting fixture L based on the setting signal input from the wireless unit 16. Specifically, for example, the control unit 18 performs dimming control for controlling the operation state of the lighting fixture L in accordance with the dimming level indicated by the setting signal, or blinks, lights, Or turn off.

  Although not shown, the control unit 18 may be configured to include a processing unit such as a CPU that executes a program, a storage unit such as a memory (for example, RAM, ROM, flash memory, etc.), and a magnetic disk device. The processing unit is connected to the storage unit and other units via the bus and controls each unit. The storage unit stores data and signals. Data and signals are transmitted by buses, signal lines, cables and other transmission media.

  The control unit 18 or the like may be realized by software stored in the ROM, or only by hardware such as an element, a device, a board, and wiring, or by a combination of software and hardware. May be. The software is stored in the storage unit as a program. This program is read by the CPU and executed by the CPU.

  Next, the illumination control device 10 of the present embodiment will be described in detail with reference to FIG. FIG. 2 is a perspective view of the illumination control device 10. FIG. 3 is a (a) top view and (b) front view of the wireless module 20 including the antenna 14. 2 and 3, three directions orthogonal to each other are indicated by three arrows X, Y, and Z.

  As shown in FIG. 2, the illumination control device 10 includes a metal housing 22. In the present embodiment, the housing 22 includes a flat rectangular parallelepiped upper housing portion 24 that opens downward, and a bottom plate 26 that is disposed so as to close the opening.

  The bottom plate 26 is formed of a metal plate and constitutes the lower wall surface of the housing 22. Both end portions in the longitudinal direction of the bottom plate 26 are bent outwardly in L-shapes downward to form attachment portions 27. The lighting control device 10 is installed by fixing these mounting portions 27 to the upper surface of the ceiling material using screws or the like, for example.

  The upper housing portion 24 has an upper wall surface 28 that has a rectangular shape in plan view, and four side wall surfaces 30, 32, 34, and 36 that hang from the four edge portions of the upper wall surface 28. The upper housing part 24 is formed by bending or drawing a metal plate. The upper wall surface 28, the four side wall surfaces 30, 32, 34, 36 and the bottom plate 26 constitute the outer wall surface of the housing 22.

  The upper wall surface 28 of the upper housing part 24 faces the bottom plate 26. In the upper housing 24, the pair of side wall surfaces 30 and 32 face each other in the longitudinal direction of the housing 22, and the pair of side wall surfaces 34 and 36 face each other in the short side direction of the housing 22.

  A rectangular opening 31 is formed in the side wall surface 30 of the upper casing 24. An electric wire or the like can be led out from the inside of the housing 22 through the opening 31, and can be connected to the lighting fixture L or an external power source (for example, a commercial power source).

  The wireless module 20 is accommodated in the housing 22. As shown in FIG. 3, the wireless module 20 includes a mounting member 40, a circuit board 42, and a cover 44. The attachment member 40 is constituted by, for example, a resin component. The attachment member 40 is a member for attaching the circuit board 42 to the housing 22.

  The attachment member 40 includes a leg portion 46, a main body portion 48, and a fixing portion 50. The leg portions 46 are respectively provided at lower portions on both sides in the width direction (X direction) of the mounting member 40. The legs 46 are placed on the bottom plate 26 of the housing 22, whereby the wireless module 20 is disposed inside the housing 22.

  As shown in FIG. 3B, the main body 48 of the mounting member 40 has a rectangular shape when viewed from the front, and is erected on the two leg portions 46. When the bottom plate 26 of the housing 22 forms a horizontal plane, the attachment member 40 on which the leg portion 46 is placed on the bottom plate 26 is arranged with the main body portion 48 in a posture along the vertical direction. That is, the main body 48 is erected vertically with respect to the leg 46.

  For example, an opening 49 having a rectangular shape that is long in the width direction (X direction) is formed in the main body 48. A circuit board 42 is disposed in the opening 49. The circuit board 42 in the present embodiment is formed in, for example, a rectangular shape in plan view. The circuit board 42 is made of, for example, a resin plate.

  The circuit board 42 is arranged in a state in which one end projects from the one side surface of the main body 48. The antenna 14 is mounted on one end of the protruding circuit board 42. When the antenna 14 is an inverted F-type antenna, the antenna 14 can be configured by a pattern wiring formed on the circuit board 42. In the present embodiment, as shown in FIG. 3A, the antenna 14 occupies a rectangular region that is long in the width direction (X direction) in plan view. This antenna region has a long side direction and a short side direction, and the direction along the short side direction (that is, the vertical direction of the long side direction) is the excitation direction RD of the antenna 14.

  The circuit board 42 is fixed in a state where it is placed on a fixing part 50 connected to the main body part 48. The circuit board 42 is fixed to the fixing unit 50 using, for example, screws. The fixing portion 50 extends from the main body 48 on the side opposite to the side from which one end of the circuit board 42 (that is, the end where the antenna 14 is formed) protrudes.

  In the present embodiment, the fixing portion 50 extends perpendicular to the main body portion 48. Thereby, the upper surface (that is, the surface on which the antenna 14 is formed) of the circuit board 42 disposed on the fixed portion 50 is in a state where the attachment member 40 is installed on the bottom plate 26 of the housing 22 along the horizontal plane. It will be arranged along the horizontal direction. For example, the circuit board 42 may be fixed to the fixing portion 50 by screwing or the like, or may be fixed to the fixing portion 50 by an adhesive.

  The radio unit 16 is mounted on the surface of the end of the circuit board 42 opposite to the end on which the antenna 14 is mounted. The wireless unit 16 extracts a setting signal from the radio wave signal received by the antenna 14 and inputs it to the control unit 18 via a pattern wiring or the like formed on the circuit board 42.

  An end portion of the circuit board 42 on which the wireless portion 16 is mounted is disposed so as to protrude from the main body portion 48 of the mounting member 40, and a cover 44 is provided to cover the protruding end portion. The cover 44 is attached to the fixed portion 50 by fitting or the like, for example. The cover 44 is made of, for example, resin.

  The attachment member 40 has a rotation shaft 52. The rotation shaft 52 has a cylindrical shape, is erected on one leg portion 46, and is connected to the main body portion 48. As shown in FIG. 3B, the distal end portion 52 a of the rotation shaft 52 penetrates the bottom plate 26 of the housing 22 and protrudes downward. Thereby, the rotation shaft 52 is supported so as to be rotatable with respect to the bottom plate 26 of the housing 22.

  The attachment member 40 (that is, the antenna 14) can be rotated within the housing 22 by rotating the tip 52 a of the rotation shaft 52 from the outside (downward) of the housing 22. That is, in the present embodiment, the distal end portion 52a of the rotation shaft 52 is an operating element for rotating the antenna 14.

  In addition, although the operation element for moving the antenna 14 to the 1st position and the 2nd position in the illumination control apparatus 10 was demonstrated by the front end part 52a of the rotating shaft 52, the example comprised in the form like an operation knob was demonstrated. However, the present invention is not limited to this. The operation element for rotating the wireless module including the antenna may be in various forms such as an operation lever, an operation handle, and an operation grip.

  As shown in FIG. 3B, a boss portion 54 having a flat cylindrical shape is fixed to the lower surface of the bottom plate 26 of the housing 22 by, for example, welding. The distal end portion 52 a of the rotation shaft 52 protrudes downward through the boss portion 54. A screw hole penetrating in the radial direction is formed in the boss portion 54, and a bolt 56 is screwed into the screw hole. When the bolt 56 is loosened, the rotating shaft 52 is in a state where it can be rotated. On the other hand, when the bolt 56 is tightened, the distal end of the threaded portion of the bolt 56 is pressed against the outer peripheral surface of the distal end portion 52a, and the rotational position of the wireless module 20 including the rotational shaft 52, that is, the mounting member 40 is fixed. The boss portion 54 and the bolt 56 in the present embodiment are an example of a fixing unit that fixes the rotational position of the mounting member 40 that constitutes the wireless module 20. Any configuration that performs a similar function may be used.

  Referring again to FIG. 2, a first slit S <b> 1 and a second slit S <b> 2 are formed on the upper wall surface 28 of the housing 22. The first and second slits S <b> 1 and S <b> 2 are formed by narrow openings that penetrate the upper wall surface 28.

  The first slit S <b> 1 extends linearly in the first direction along the width direction (X direction) of the illumination control device 10. On the other hand, the second slit S2 is formed to extend in a second direction different from the first slit S1. Specifically, the second slit S2 includes a first straight portion S2a extending in a second direction that forms an angle θ with respect to the first slit S1, and a first slit S1 bent from the first straight portion S2a. And a second straight portion S2b extending in parallel. In the present embodiment, an example is shown in which the angle θ formed by the first straight portion S2a of the second slit S2 and the first slit S1 is 45 degrees. However, it is not limited to this, The said angle (theta) may be suitably set within the range of 30 degrees-90 degrees, for example.

  The width direction length of the first slit S1 is preferably set to ½ or more of the wavelength λ corresponding to the frequency of the radio wave radiated from the remote controller 2 (see FIG. 1). As a specific example, when the frequency of the radio wave is in the 900 MHz band, the length in the width direction of the first slit S1 is preferably set to about 160 mm or more. Thereby, the communication quality by the antenna 14 of the radio | wireless module 20 accommodated in the housing | casing 22 improves. For the same reason, it is preferable that the total length of the second slit S2 is also set to λ / 2 or more. The total length of the second slit S2 in this case is the total length of the first straight portion S2a and the second straight portion S2b.

  FIG. 4A is a diagram illustrating a state in which the wireless module 20 is arranged at the first position corresponding to the first slit S1, and FIG. 4B is a second position corresponding to the second slit S2. It is a figure which shows the state arrange | positioned.

  As shown in FIG. 4A, when the wireless module 20 is disposed at the first position corresponding to the first slit S1, the antenna 14 of the wireless module 20 faces the first slit S1. In this case, it is preferable that the excitation direction RD of the antenna 14 is orthogonal to the extending direction of the first slit S1 on the projection surface when the illumination control device 10 is viewed from above. Here, “orthogonal” includes an angle range (for example, ± several degrees) that can be regarded as being substantially vertical, in addition to a case where the angle is completely 90 °. This is the same when the wireless module 20 moves to a second position described later. By setting the excitation direction RD of the antenna 14 with respect to the first slit S1 in this way, radio waves incident in the housing 22 via the first slit S1 can be satisfactorily received by the antenna 14, and communication Quality is good.

  When the illumination control device 10 is shipped from the manufacturer, the wireless module 20 is disposed at the first position corresponding to the first slit S1. When the lighting control device 10 is installed together with the lighting fixture L on the ceiling of a facility such as a factory, a warehouse, or a gymnasium, it may be installed in a place where the reception environment from the remote controller 2 is bad. For example, there may be a situation where it is difficult to receive radio waves due to the presence of a metal beam or the like near the installation location of the illumination control device 10.

  In such a case, the position of the wireless module 20 is moved from the first position to the second position corresponding to the second slit S2 by rotating the tip 52a of the rotation shaft 52 by a contractor or the like. Let At this time, the antenna 14 of the wireless module 20 is at a position facing the first linear portion S2a of the second slit S1. In this case, it is preferable that the excitation direction RD of the antenna 14 is orthogonal to the extending direction of the first straight portion S2a of the second slit S2 on the projection surface when the illumination control device 10 is viewed from above. A stopper (not shown) is fixed to the lower surface of the upper wall surface 28. When the wireless module 20 is rotated from the first position to the second position, the stopper comes into contact with the main body 48 of the mounting member 40, so that the wireless module 20 is wireless. Module 20 is stopped in the second position. In addition, a stopper is provided for stopping when the wireless module 20 is rotated from the second position to the first position by contacting the main body 48 of the mounting member 40.

  FIG. 5 is a diagram showing the radio field intensity on the antenna horizontal plane and the antenna vertical plane when using the first slit and when using the second slit. Here, the “antenna horizontal plane” is a plane along the surface of the antenna formation region of the circuit board 42 (corresponding to the XY plane at the first position shown in FIG. 2), and the “antenna vertical plane” is the circuit board. 42 is a plane including an excitation direction RD orthogonal to the surface of the antenna formation region 42 (corresponding to the YZ plane at the first position shown in FIG. 2). In FIG. 5, the gain of vertical polarization is indicated by a broken line, the gain of horizontal polarization is indicated by a one-dot chain line, and the total gain is indicated by a solid line. As shown in FIG. 5, it was confirmed that when the radio module 20 was changed from the first position to the second position, the phase of each polarization changed and the gain changed by about 2.5 to 3 dB.

  FIG. 6 is a diagram illustrating a relationship between the radio wave intensity when the antenna is disposed at the first position in the lighting control apparatus 10 installed on the ceiling C with the metal beam B, (B) is a figure which shows the relationship with the field intensity when an antenna is arrange | positioned in the 2nd position. FIG. 6 shows that the radio wave intensity is relatively strong in the region or position where the stippling is given.

  As shown in FIG. 6A, when the antenna 14 of the wireless module 20 is in the first position, the radio beam radiated from the remote controller 2 is disturbed by the metal beam B, so that Radio field strength may be reduced. In this case, if the position of the antenna 14 at the first position is at or near the position corresponding to the “node” in the standing waveform of the radio wave, the reception environment is deteriorated, and the lighting fixture L is turned on, turned off, dimming, etc. Control can be difficult.

  In such a case, the wireless module 20 is rotated to change from the first position to the second position. As a result, as shown in FIG. 6B, the antenna 14 changes its position and orientation, so that the antenna is placed in a region where the radio wave intensity is relatively strong (a position corresponding to the “antinode” of the standing wave waveform or the vicinity thereof). 14 moves. As a result, the reception characteristics of the antenna 14 are improved, the communication quality of the lighting control device 10 is improved, and the operation control of the lighting fixture L can be performed satisfactorily.

  As described above, the illumination control device according to the present embodiment is made of a metal, in which the first slit S1 extending in the first direction and the second slit S2 extending in a direction different from the first direction are formed on the upper wall surface 28. A housing 22, an antenna 14 housed in the housing 22 and rotatably provided, and a control unit 18 that controls the operating state of the light source based on an external signal received by the antenna 14. And the antenna 14 can be rotated to the 1st position which opposes 1st slit S1, and the 2nd position which opposes 2nd slit S2. According to this configuration, when the reception environment at the first position is poor, changing the antenna 14 to the second position improves the reception characteristics of the antenna 14 and improves the communication quality of the illumination control device 10. it can.

  In the illumination control device 10 of the present embodiment, the antenna 14 has an excitation direction RD, and when the antenna 14 is disposed at the first position, the excitation direction RD is orthogonal to the first direction on the projection plane, and the antenna 14 Is preferably in the second position, the excitation direction RD is preferably orthogonal to the second direction on the projection plane. If comprised in this way, it will become possible to receive suitably the electromagnetic wave which injects into the inside of the housing | casing 22 via each slit S1, S2.

  Moreover, in the illumination control apparatus 10 of this embodiment, it is preferable to further include a wireless unit 16 that is electrically connected to the antenna 14, and the wireless unit 16 rotates together with the antenna 14. As described above, the antenna 14 and the wireless unit 16 are mounted on the circuit board 42 and can be rotated integrally, for example, so that the wireless module including the antenna 14 and the wireless unit 16 can be downsized, and thus illumination control can be performed. The apparatus 10 can be reduced in size.

  Moreover, in the illumination control apparatus 10 of this embodiment, it is preferable that the antenna 14 is attached to the attachment member 40, and the attachment member 40 has a rotation shaft 52 that is rotatably supported with respect to the housing 22. According to this configuration, the antenna 14 can be easily and stably pivoted from the first position to the second position or vice versa using the pivot shaft 52.

  Further, in the illumination control device 10 of the present embodiment, it is preferable that the distal end portion 52 a of the rotation shaft 52 that rotates the antenna 14 is provided outside the housing 22. According to this configuration, the position of the antenna 14 can be easily changed from the outside of the housing 22 to the first position and the second position.

  In the illumination control device 10 of the present embodiment, the second slit S2 may include a first straight portion S2a along the second direction and a second straight portion S2b that bends and extends from the second direction. According to this configuration, even if the length of the housing 22 cannot ensure the full length of the slit in a straight line with λ / 2 or more, the total length of the second slit S2 can be made λ / 2 or more. Good characteristics can be achieved.

  Moreover, in the illumination control apparatus 10 of this embodiment, the 1st slit S1 and 2nd slit S2 demonstrated the example currently formed in the upper wall surface 28 which is the same outer wall surface of the housing | casing 22. FIG. Instead, the housing 22 has an upper wall surface 28 and a bottom plate 26 as a pair of opposed outer wall surfaces, and the first slit S1 and the second slit S2 may be formed on the upper wall surface 28 and the bottom plate 26, respectively. good. With this configuration, it is possible to further improve the reception characteristics of the antenna 14 accommodated in the housing 22. Note that the first slit S <b> 1 and the second slit S <b> 2 may be formed only in the bottom plate 26 of the housing 22.

  Furthermore, the lighting fixture L of the present embodiment may include the lighting control device 10 having any one of the above configurations and a light source whose operation state is controlled by the lighting control device 10.

  Next, with reference to FIG. 7A, 7B and FIG. 8, the modification of the illumination control apparatus 10 of this embodiment is demonstrated. In the following, the same or similar elements as those in the above-described embodiment are denoted by the same or similar reference numerals, the description thereof will be omitted, and different points will be mainly described.

  FIG. 7A is a diagram showing a modification in which three slits S1, S2, and S3 are formed on the upper wall surface 28 of the housing 22A of the illumination control device 10. FIG. As shown in FIG. 7A, a first slit S1, a second slit S2, and a third slit S3 are formed on the upper wall surface of the housing 22A. The first and second slits S1, S2 are the same as in the above-described embodiment. The third slit S3 includes a first straight portion S3a, a second straight portion S3b, and a third straight portion S3c.

  The first straight line portion S3a extends in a third direction that is further different from the first and second slits S1 and S2. Specifically, the third direction is, for example, a direction that forms 90 ° with respect to the first direction, and a direction that forms 45 ° with respect to the first straight portion S2a of the second slit S2. The second straight portion S3b is bent and extended by, for example, 45 ° from the first straight portion S3a. The third straight portion S3c is further bent by, for example, 45 ° from the second straight portion S3b and extends parallel to the first slit S1. The total length of the third slit S3, that is, the total length of the first to third linear portions S3a, S3b, S3c is 1 / wavelength λ corresponding to the frequency of the radio wave radiated from the remote controller 2 (see FIG. 1). It is preferably set to 2 or more.

  In the case of this modification, the position of the wireless module 20 including the antenna 14 is set to the first position corresponding to the first slit S1, the second position corresponding to the second slit S2, and the third position corresponding to the third slit S3. It can be rotated to a position. When the wireless module 20 is disposed at the third position, it is preferable that the excitation direction RD of the antenna 14 is orthogonal to the first linear portion S3a of the third slit S3 on the projection surface when the housing 22A is viewed from above. is there. Thus, by setting the number of slits to 3 or more, the changeable position of the antenna 14 is increased, and the adjustment margin of the antenna reception characteristics can be widened.

  The first, second, and third slits S1, S2, and S3 may be formed on the bottom plate 26 that constitutes the housing 22A.

  FIG. 7B is a diagram illustrating a modification in which two slits are formed on the upper wall surface 28 and the bottom plate 26 of the housing 22B of the lighting control device 10 in different positional relationships. The housing 22B has an upper wall surface 28 and a bottom plate 26 facing each other. A first slit S1, S1 ′ and a second slit S2, S2 ′ are formed in the upper wall surface 28 and the bottom plate 26, respectively. The first and second slits S1 and S2 formed on the upper wall surface 28 are different from the first and second slits S1 ′ and S2 ′ formed on the bottom plate 26 on the projection surface when the housing 22B is viewed from above. They are formed at positions shifted from each other.

  Specifically, the first slit S1 ′ of the bottom plate 26 extends linearly with a length of λ / 2 in the positional relationship between the first slit S1 and the second slit S2 of the upper wall surface 28. The second slit S2 ′ of the bottom plate 26 is formed in the same shape as the third slit S3 of the housing 22A described with reference to FIG. 7A.

  Thus, according to the configuration of this modification, a total of four slits S1, S1 ′, S2, and S2 ′ are formed by the upper wall surface 28 and the bottom plate 26 of the housing 22B, and the antenna position is set to the first to the first positions. It becomes possible to change to the fourth position. Thereby, the changeable position of the antenna 14 increases, and the adjustment margin of the antenna reception characteristic can be widened. Note that the four slits S1, S1 ′, S2, S2 ′ may be formed in only one of the upper wall surface 28 and the bottom plate 26.

  Next, another modification will be described with reference to FIG. As shown in FIG. 8, the second slit S <b> 2 may be formed from the upper wall surface 28 to the side wall surface 34 of the housing 22 </ b> C of the illumination control device 10. In this case, the first slit S1 is linearly formed on the upper wall surface 28 as in the above embodiment.

  In this case, the distal end portion 52a of the rotating shaft 52 protrudes laterally via a boss portion 54 provided on the side wall surface 30 of the housing 22C. In FIG. 8, the wireless module 20 including the antenna 14 is in the first position corresponding to the first slit S1. From this state, the tip end portion 52a of the rotation shaft 52 is rotated by 90 ° in the direction of the arrow, so that the antenna 14 becomes the second position facing the portion formed on the side wall surface 34 of the second slit S2. Even if the formation position of the second slit S2 and the rotation direction of the antenna 14 are changed as in this modification, the same effect as that of the above-described embodiment can be obtained. In this case, the second slit S2 is formed linearly along the width direction (X direction) only on the side wall surface 34, and the excitation direction of the antenna 14 is the second side of the side wall surface 34 when the second position is reached. You may comprise so that it may orthogonally cross on the projection surface seen from the side to slit S2.

  Next, still another modification will be described with reference to FIGS. FIG. 9 is a bottom view showing the lighting fixture L in which the lighting control device 10 is integrally provided. FIG. 10 is a view showing an example in which (a) four slits are formed on the upper wall surface of the illumination control device 10 of FIG. 9, and (b) shows that the second slit is bent in a substantially U shape. It is a figure which shows the example currently formed. Hereinafter, the same or similar elements as those in the above-described embodiment will be denoted by the same or similar reference numerals, the description thereof will be omitted, and different points will be mainly described.

  As shown in FIG. 9, the lighting fixture L is installed in a ceiling etc., for example. The luminaire L includes a fixture main body 60 that is rectangular when viewed from below, and a light emitting portion 62 that extends in the longitudinal direction at the center in the short direction of the fixture main body 60. The light emitting unit 62 includes a light source (not shown) and a translucent cover.

  The lighting control device 10 is integrally attached to the upper surface of the fixture body 60 with, for example, a screw in the installed state of the lighting fixture L. The metal casing 22 constituting the illumination control device 10 is formed in a rectangular parallelepiped shape having a shorter length than the instrument body 60.

  As shown in FIG. 10A, the first to fourth slits S1, S2, S3, S4 may be formed in a radial shape or a fan shape on the upper wall surface 28 of the housing 22 of the lighting control device 10. The first to fourth slits S1, S2, S3, S4 are formed to extend linearly in different directions. In this case, the antenna 14 of the wireless module 20 accommodated in the housing 22 can be pivotally moved to first to fourth positions corresponding to the first to fourth slits S1, S2, S3, S4.

  Moreover, as shown in FIG.10 (b), in the upper wall surface 28 of the housing | casing 22 of the illumination control apparatus 10, the 1st slit S1 which makes a linear shape, and the 1st slit S1 are extended in a different direction, and are in the middle. A second slit S2 bent in a substantially U shape (or crank shape) may be formed. The way of bending the second slit S2 can be changed to various shapes.

  Thus, the lighting fixture L with which the lighting control device 10 is integrated has an advantage that the installation can be easily performed in a short time as compared with the case where each is separate.

  FIG. 11 is a diagram illustrating an example in which two slits are formed on the side wall surface of the lighting control device 10 in the lighting fixture L in which the lighting control device 10 is integrally provided. As illustrated in FIG. 11, the lighting fixture L includes two light emitting units 64. Each light-emitting part 64 includes a light source (not shown) and a translucent cover. Each light emitting portion 64 is configured as an integrated object by being fastened to the mounting plate 66 with a bolt.

  The attachment plate 66 is attached to the ceiling of a facility such as a gymnasium via a bracket 68. Further, an installation plate 70 is fixed to the upper portion of the mounting plate 66, and the illumination control device 10 is installed on the upper surface of the installation plate 70.

  In the illumination control device 10 of this modification, first and second slits S <b> 1 and S <b> 2 are formed on the side wall surface 34 of the housing 22. The first and second slits S1, S2 can be formed in the same shape as in the above-described embodiment.

  As described above, the lighting apparatus L in which the lighting control device 10 is integrated can also achieve the same effects as those of the above-described embodiment, and can be easily installed in a short time as compared with the case of being a separate body. There is.

  Note that the illumination control device according to the present disclosure and the luminaire including the illumination control device are not limited to the above-described embodiments and modifications, and various types can be made within the scope of the matters described in the claims of the present application. Changes and improvements are possible.

  DESCRIPTION OF SYMBOLS 1 Lighting system, 2 Remote controller, 10 Lighting control apparatus, 12 Electric wire, 14 Antenna, 16 Wireless part, 17 Electric wire or wiring, 18 Control part, 20 Wireless module, 22, 22A, 22B, 22C Case, 24 Upper case Part, 26 bottom plate, 27 mounting part, 28 upper wall surface (outer wall surface), 30, 32, 34, 36 side wall surface (outer wall surface), 31, 49 opening, 40 mounting member, 42 circuit board, 44 cover, 46 legs Part, 48 body part, 50 fixing part, 52 rotating shaft, 52a tip part, 54 boss part, 56 bolt, 60 instrument body, 62, 64 light emitting part, 66 mounting plate, 68 bracket, 70 installation plate, L, L1 , L2,..., Ln Lighting fixture, RD excitation direction, S1 first slit, S2 second slit, S2a, S3a first linear portion, S2b, S b second linear portion, S3 third slits, S3c third linear portion.

Claims (11)

A metal housing in which a first slit extending in a first direction and a second slit extending in a direction different from the first direction are formed on an outer wall surface;
An antenna housed inside the housing and rotatably provided;
A control unit for controlling the operating state of the light source based on an external signal received by the antenna,
The antenna is pivotable between a first position facing the first slit and a second position facing the second slit.
Lighting control device.   The antenna has an excitation direction, and when the antenna is disposed at the first position, the excitation direction is orthogonal to the first direction on the projection plane, and the antenna is disposed at the second position. The illumination control device according to claim 1, wherein the excitation direction is orthogonal to the second direction on the projection plane.   The illumination control device according to claim 1, further comprising a wireless unit electrically connected to the antenna, wherein the wireless unit rotates together with the antenna.   The lighting control device according to claim 1, wherein the antenna is attached to an attachment member, and the attachment member has a rotation shaft that is rotatably supported with respect to the housing.   The lighting control device according to any one of claims 1 to 4, wherein a manipulator for rotating the antenna is provided outside the housing.   The lighting control according to any one of claims 1 to 5, wherein the second slit includes a first straight portion along the second direction and a second straight portion that bends and extends from the second direction. apparatus.   The lighting control device according to any one of claims 1 to 6, wherein the first slit and the second slit are formed on the same outer wall surface of the casing.   The said 2nd slit is formed ranging over the outer wall surface of the said housing | casing in which the said 1st slit was formed, and an outer wall surface different from this, It is described in any one of Claims 1-6. Lighting control device.   The said housing | casing has a pair of outer wall surface which mutually opposes, The said 1st slit and the said 2nd slit are each formed in the said pair of outer wall surface, Each of Claims 1-7. Lighting control device.   The first slit and the second slit formed on one of the pair of outer wall surfaces, and the first slit and the second slit formed on the other of the pair of outer wall surfaces are mutually on the projection surface. The lighting control device according to claim 9, wherein the lighting control device is formed at a shifted position. The illumination control device according to any one of claims 1 to 10,
A lighting apparatus comprising: a light source whose operation state is controlled by the lighting control device.

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