WO2022024466A1

WO2022024466A1 - Light source unit and light fixture

Info

Publication number: WO2022024466A1
Application number: PCT/JP2021/015442
Authority: WO
Inventors: 健大野; 正博清水; 和宇堀; 桂介植田
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2020-07-30
Filing date: 2021-04-14
Publication date: 2022-02-03
Also published as: JP2022026246A

Abstract

The purpose of the present disclosure is to improve noise tolerance of wireless signals. A light source unit (B1) comprises a light source module, a power supply device (2), a mounting plate (3), and a communication device (4). The power supply device (2) causes a plurality of LEDs to emit light by supplying an electric current thereto. The mounting plate (3) has: the light source module mounted to a front surface thereof; and the power supply device (2) mounted to a rear surface thereof. The communication device (4) receives a wireless signal and transmits control information contained in the wireless signal to the power supply device (2) via an electric wire (46). The power supply device (2) is configured to adjust the supply of electric current in accordance with the control information. The mounting plate (3) has formed therein a through-hole (32) penetrating from the front surface to the rear surface so as to allow the wireless signal to pass therethrough. The communication device (4) is disposed at a location adjacent to the power supply device (2).

Description

Light source unit and lighting equipment

The present disclosure relates to a light source unit and a luminaire, and more particularly to a light source unit that receives a radio signal and operates in response to the radio signal, and a luminaire having the light source unit.

As a conventional example, the light emitting unit (light source unit) and the lighting device (lighting fixture) described in Patent Document 1 are exemplified. The light emitting unit described in Patent Document 1 (hereinafter referred to as a conventional example) includes a long light emitting element substrate on which a semiconductor light emitting element is mounted, a power supply unit, and a control unit that controls light emission. In the conventional example, a long support member, a long translucent cover attached to the support member, and a pair of end covers covering the openings at both ends of the translucent cover and the support member in the longitudinal direction. And further prepare. The control unit includes an antenna that receives a signal and a wireless control unit that controls the power supplied from the power supply unit according to the signal received by the antenna. The radio control unit is provided between at least one end cover and the end of the support member. The power supply unit is attached near the center in the longitudinal direction of the support member. The power supply unit and the control unit are electrically connected by electric wires.

Japanese Unexamined Patent Publication No. 2017-33791

In the above conventional example, since the power supply unit and the control unit are arranged apart from each other, the electric wire connecting the power supply unit and the control unit becomes long, and the signal of the signal transmitted from the control unit to the power supply unit via the electric wire. There is a high possibility that the signal-to-noise ratio will decrease.

An object of the present disclosure is to provide a light source unit and a lighting fixture capable of improving noise resistance in a wireless signal.

The light source unit according to one aspect of the present disclosure includes a light source module having a plurality of light emitting elements and a substrate on which the plurality of light emitting elements are mounted, and a power supply device that supplies current to the plurality of light emitting elements to emit light. .. The light source unit receives a radio signal with a mounting plate to which the light source module is mounted on the front surface and the power supply device is mounted on the back surface, and transmits control information contained in the radio signal to the power supply device via an electric wire. It is equipped with a communication device. The power supply device is configured to adjust the supply of the current according to the control information. The mounting plate has a through hole that penetrates from the front surface to the back surface and allows the radio signal to pass through. The communication device is arranged at a position adjacent to the power supply device.

The lighting fixture according to one aspect of the present disclosure includes a light source unit and a fixture main body that supports the light source unit.

FIG. 1 is a perspective view of a lighting fixture according to the first embodiment of the present disclosure. FIG. 2 is an exploded perspective view of the lighting fixture of the same as above and the light source unit according to the first embodiment of the present disclosure. FIG. 3 is a circuit block diagram of the same light source unit. FIG. 4 is a perspective view of the communication device in the same light source unit. FIG. 5 is a partial cross-sectional view of the same light source unit. FIG. 6 is a cross-sectional view of the same light source unit in which a part is omitted. FIG. 7 is a front view of a main part of the same light source unit. FIG. 8 is an explanatory diagram for explaining the installation state of the lighting fixture as above. FIG. 9 is a cross-sectional view of the light source unit according to the second embodiment of the present disclosure in which a part is omitted.

Hereinafter, the light source unit and the lighting fixture according to the embodiment of the present disclosure will be described in detail with reference to the drawings. However, each figure described in the following embodiment is a schematic view, and the ratio of the size and the thickness of each component does not necessarily reflect the actual dimensional ratio. The configuration described in the following embodiments is only an example of the present disclosure. The present disclosure is not limited to the following embodiments, and various changes can be made depending on the design and the like as long as the effects of the present disclosure can be achieved.

(1) Embodiment 1
(1-1) Lighting Equipment The lighting equipment A1 according to the first embodiment of the present disclosure (hereinafter, abbreviated as the lighting equipment A1) is a light source unit according to the first embodiment of the present disclosure, as shown in FIGS. 1 and 2. A B1 (hereinafter, abbreviated as a light source unit B1) and an instrument main body 6 are provided. The light source unit B1 is detachably attached to the fixture body 6 which is directly attached to the ceiling. However, the instrument body 6 may be embedded in the ceiling. Alternatively, the instrument body 6 may be directly attached to the wall. The instrument body 6 may be embedded in the wall.

The instrument body 6 includes a rectangular box-shaped accommodating portion 60 having an open lower surface, a pair of reflectors 61 projecting diagonally upward from the opening edge edges on both sides along the longitudinal direction of the accommodating portion 60, and the accommodating portion 60 and the accommodating portion 60. A pair of end plates 62 provided at both ends in the longitudinal direction of the pair of reflectors 61 are provided (see FIG. 2). In the instrument body 6, suspension bolts (not shown) are inserted into at least two mounting holes 63 among the plurality of mounting holes 63 provided on the bottom surface of the accommodating portion 60, and nuts (not shown) are inserted into the suspension bolts (not shown). It is installed on the ceiling by tightening (not shown). Further, the power supply line is inserted into the power supply hole 64 of any one of the plurality of power supply holes 64 provided on the bottom surface of the accommodating portion 60. The power line inserted through the power hole 64 is electrically connected to the terminal block 65 attached to the inner bottom surface of the accommodating portion 60. Three electric wires 66 are drawn out from the terminal block 65. The tips of these three wires 66 are electrically connected to one male power connector 67.

(1-2) Light Source Unit As shown in FIG. 2, the light source unit B1 includes a light source module 1, a power supply device 2, a mounting plate 3, a communication device 4, and a cover 5.

(1-2-1) Light Source Module The light source module 1 has a large number of LEDs (Light Emitting Diodes) 10 and a substrate 11. The LED 10 which is a light emitting element is, for example, a package type white LED for lighting. However, the light emitting element is not limited to the LED, and may be an organic electroluminescence element, a semiconductor laser element, or the like.

The substrate 11 is formed in a long rectangular shape. However, the substrate 11 may be configured by connecting a plurality of substrates in the longitudinal direction. A large number of LEDs 10 are mounted in a row at equal intervals along the longitudinal direction of the substrate 11 at the center of the surface (lower surface) of the substrate 11 in the lateral direction (see FIG. 2). A large number of LEDs 10 are electrically connected in series or series-parallel by printed wiring formed on the surface of the substrate 11.

(1-2-2) Mounting plate The mounting plate 3 is formed of a metal plate into a long square shape. The mounting plate 3 has a long rectangular bottom plate 30 and a pair of side plates 31 that rise upward from both ends along the longitudinal direction of the bottom plate 30. The light source module 1 is attached to the surface (lower surface) of the bottom plate 30 by a plurality of claws (not shown) cut up from the bottom plate 30. The width of the bottom plate 30 in the lateral direction is larger than the width of the substrate 11 in the lateral direction (see FIG. 2).

Further, the bottom plate 30 is provided with a circular through hole 32 (see FIG. 2). The through hole 32 is provided in a portion of the bottom plate 30 outside the light source module 1. In other words, the through hole 32 is provided at a position that does not overlap with the light source module 1 when viewed from the thickness direction of the bottom plate 30.

(1-2-3) Cover The cover 5 is formed in a semi-cylindrical shape by a translucent synthetic resin such as an acrylic resin or a polycarbonate resin. Further, the cover 5 has a pair of protrusions 50 protruding upward along the longitudinal direction. The cover 5 accommodates the mounting plate 3 between the pair of protruding walls 50, and is hooked on the tip (upper end) of the pair of side plates 31 of the mounting plate 3 at the tip (upper end) of the pair of protruding walls 50. It is attached to the mounting plate 3 by hooking the portion.

(1-2-4) Power Supply Device As shown in FIG. 2, the power supply device 2 has a lighting circuit 20 and a power supply case 21 accommodating the lighting circuit 20. The lighting circuit 20 is composed of a printed circuit in which various electronic components including an integrated circuit and a female power connector 23 are mounted on a rectangular printed circuit board 22. The power connector 23 is electrically and mechanically connected to the power connector 67.

The power supply case 21 is formed of a metal plate in the shape of a long rectangular box with one side (lower surface) open. The power supply case 21 accommodates the lighting circuit 20 and is fixed to the mounting plate 3 so that the opening surface faces the back surface (upper surface) of the bottom plate 30. The power supply case 21 is electrically connected to the mounting plate 3 in a state of being fixed to the mounting plate 3. Further, the mounting plate 3 is electrically connected to the fixture main body 6 in a state where the light source unit B1 is attached to the fixture main body 6. Therefore, the power supply case 21 of the power supply device 2 is electrically connected to the instrument main body 6 through the mounting plate 3.

As shown in FIG. 3, the lighting circuit 20 is supplied with AC power from the commercial power system 9 through the power connector 23. The lighting circuit 20 includes a power conversion circuit 200, a constant current circuit 201, a control circuit 202, a control power supply circuit 203, a pair of

output terminals

204 and 205, a signal terminal 206, a control power supply terminal 207, and a ground terminal. It has 208 and. One output terminal 204 is electrically connected to the positive electrode of the light source module 1, and the other output terminal 205 is electrically connected to the negative electrode of the light source module 1.

The power conversion circuit 200 is configured to convert AC power supplied from the power system 9 into DC power. The power conversion circuit 200 preferably includes, for example, a full-wave rectifier circuit, a power factor improving circuit (step-up chopper circuit), a back converter (step-down chopper circuit), and the like. Alternatively, the power conversion circuit 200 may be composed of a full-wave rectifier circuit and a converter circuit. The converter circuit has a single stage converter (also referred to as a one converter) capable of performing voltage conversion and power factor improvement in parallel. Specifically, the converter circuit preferably has a SEPIC (Single Ended Primary Inductance Converter) type DC / DC converter circuit.

The constant current circuit 201 is configured to match the direct current supplied from the power conversion circuit 200 to the light source module 1 via the pair of

output terminals

204 and 205 to the target value.

The control circuit 202 includes a microcontroller as a main component. The control circuit 202 switches between operation and stop of the power conversion circuit 200 and the constant current circuit 201 according to the control information received from the communication device 4, and changes the target value of the direct current (load current) in the constant current circuit 201. It is configured to do.

The control circuit 202 receives a PWM (Pulse Width Modulation) signal from the communication device 4 through the signal terminal 206 and the ground terminal 208. The PWM signal transmits control information by changing the duty ratio of the rectangular wave signal having a fixed period. For example, when the duty ratio is 95% to 100%, control information in which the target value of the load current is zero is transmitted. Further, when the duty ratio is 5% or less, control information is transmitted in which the target value of the load current is the current rated value of the light source module 1. Further, when the duty ratio is an arbitrary value in the range of 95% to 5%, the control information is set so that the target value of the load current is the corresponding value in the range of 5% to 100% of the rated current value of the light source module 1. Be transmitted.

The control power supply circuit 203 is configured to generate a control power supply voltage from the DC output of the power conversion circuit 200. The control power supply circuit 203 is configured to create a control power supply voltage (for example, a DC voltage of about 5V to 3.3V) from the output voltage of the power conversion circuit 200. The control power supply circuit 203 applies the created control power supply voltage to the control power supply terminal 207 and the ground terminal 208, and supplies the created control power supply voltage to the communication device 4 via the two electric wires 46.

(1-2-5) Communication device (1-2-5-1) Circuit configuration of communication device The communication device 4 has a reception unit 40 and a signal circuit unit 41, and is a remote controller 7 (see FIG. 2). It is configured to receive a radio signal (infrared signal) transmitted from and acquire control information. The infrared signal transmitted from the remote controller 7 conforms to, for example, a standard defined by the Home Appliances Association, the so-called Home Appliances Association format. In the household appliances cooperative format, a carrier wave consisting of a square wave having a wavelength peak value of 900 to 950 nm, a duty ratio of 50%, a frequency of 33 kHz or more and a frequency of 40 kHz or less is pulse position modulated.

The receiving unit 40 has two light receiving elements (for example, a photodiode or a phototransistor) for receiving infrared rays (infrared light). The receiving unit 40 is configured to waveform-shape the output signal of each light receiving element, amplify it, and output it. That is, the receiving unit 40 has a function of converting a wireless signal (infrared signal) into an electric signal and outputting the signal. In the following description, the electric signal output from the receiving unit 40 is referred to as a received signal.

The signal circuit unit 41 demodulates the received signal output by the receiving unit 40 and acquires control information. The control information is information including each command of a lighting command for turning on the light source unit B1, a turning off command for turning off the light source unit B1, and a dimming command for instructing the dimming ratio of the light source unit B1.

Further, the signal circuit unit 41 converts the acquired control information (lighting command, extinguishing command, and dimming command) into a PWM signal. For example, when the signal circuit unit 41 acquires a lighting command, it converts it into a PWM signal having a duty ratio of 3%, and when it acquires an extinguishing command, it converts it into a PWM signal having a duty ratio of 100%. Further, when the signal circuit unit 41 acquires the dimming command, it converts it into a PWM signal having a duty ratio corresponding to the dimming ratio instructed by the dimming command. The signal circuit unit 41 outputs the converted PWM signal to the signal terminal 206 and the ground terminal 208 of the lighting circuit 20. The receiving unit 40 and the signal circuit unit 41 operate at the control power supply voltage supplied from the control power supply circuit 203 of the lighting circuit 20.

(1-2-5-2) Structure of Communication Device The communication device 4 has a circuit board 42 and a case 43 as shown in FIG. The circuit board 42 is formed in a rectangular shape. A receiving unit 40, a signal circuit unit 41, a signal connector 47, and the like are mounted on the surface of the circuit board 42. However, in FIG. 4, the signal circuit unit 41 is not shown.

The receiving unit 40 is provided with two light receiving lenses 401 on one side surface of the rectangular parallelepiped package 400 (see FIGS. 4 and 5). Each light receiving lens 401 is configured to collect an infrared signal (infrared light) on a light receiving element such as a photodiode or a phototransistor housed in the package 400. The receiving unit 40 is mounted so that the side surface of the package 400 provided with the light receiving lens 401 is orthogonal to the surface of the circuit board 42 near one corner on the surface of the circuit board 42. However, the number of light receiving lenses 401 included in the receiving unit 40 is not limited to two, and may be three or more or only one. When the circuit board 42 is housed in the case 43 with the surface of the circuit board 42 facing the lower wall 430 of the case 43, the receiving unit 40 circuits the side surface of the package 400 in which the light receiving lens 401 is provided. It is mounted so as to be parallel to the surface of the substrate 42.

The signal connector 47 is mounted on the surface of the circuit board 42 at a diagonal position with the receiving unit 40. The tip of each of the three electric wires 46, that is, the electric wire for the control signal, the electric wire for the control power supply, and the electric wire for the ground, is electrically connected to the signal connector 47 (see FIG. 4).

(1-2-5-3) Case The up / down, left / right, and front / back directions indicated by the arrows in FIG. 4 are defined as the up / down, left / right, and front / back directions of the communication device 4.

As shown in FIG. 4, the case 43 has a lower wall 430, a front wall 431, a rear wall 432, a side wall 433, and an upper wall 434, and is formed in a box shape with an open left side surface. However, the upper portion of the front wall 431 of the case 43 is inclined upward toward the rear wall 432 (see FIG. 4). Further, the case 43 has a pair of support pieces 435 that sandwich and support both ends of the circuit board 42 along the longitudinal direction with the rear wall 432. The pair of support pieces 435 are integrally formed with each of the lower wall 430 and the upper wall 434 so as to project one from each of the lower wall 430 and the upper wall 434. The case 43 is preferably configured as a synthetic resin molded body made of a synthetic resin material such as a polycarbonate resin.

A circular opening 44 is formed at the rear end of the right end of the lower wall 430. The opening 44 penetrates the lower wall 430 in the vertical direction and faces the two light receiving lenses 401 of the receiving unit 40 mounted on the circuit board 42 in the vertical direction (see FIGS. 4 and 5). ). Further, a peripheral wall 45 is formed at the rear end of the right end on the lower surface of the lower wall 430. The peripheral wall 45 is formed in a cylindrical shape so as to surround the circumference of the opening 44. That is, the two light receiving lenses 401 of the receiving unit 40 face the outside of the case 43 through the inside of the opening 44 of the lower wall 430 and the peripheral wall 45. Therefore, the receiving unit 40 can receive the infrared signal coming from the outside of the case 43 by the two light receiving lenses 401 through the inside of the peripheral wall 45 and the opening 44.

Here, the opening 44 of the case 43 faces the through hole 32 provided in the bottom plate 30 of the mounting plate 3 along the vertical direction (see FIG. 5). Therefore, by designing the respective sizes of the opening 44 and the through hole 32 to the optimum size, the radio signal transmitted to the other light source unit B1 can be obtained while ensuring the communication distance required for the communication device 4. The possibility of receiving can be reduced.

Further, a wire groove 4300 is formed at the left end of the lower wall 430. Further, an L-shaped holding claw 4301 is formed in the vicinity of the wire groove 4300 on the lower surface of the lower wall 430 (see FIG. 4). The holding claw 4301 holds three electric wires 46 drawn out of the case 43 from the wire groove 4300. A plug connector is connected to the tips of these three electric wires 46.

Case 43 has a pair of connecting male portions 436. Each of the pair of connecting male portions 436 is formed in an E shape. These pair of coupling male portions 436 are mechanically coupled to the pair of coupling female portions provided in the power supply case 21 (see FIG. 2). The pair of coupling female portions are provided on one side surface of the power supply case 21 in the longitudinal direction.

Thus, the case 43 is arranged at a position adjacent to the power supply case 21 along the longitudinal direction of the power supply case 21 by connecting the pair of coupling male portions 436 to the pair of coupling female portions (see FIG. 6). .. The three electric wires 46 of the communication device 4 have the signal terminal 206, the control power supply terminal 207, and the control power supply terminal 207 of the lighting circuit 20 by connecting the plug connector to the receptacle connector mounted on the printed circuit board 22 of the power supply device 2. It is electrically connected to the ground terminal 208 (see FIG. 3).

(1-3) Features of the light source unit One feature of the light source unit B1 is that the communication device 4 is arranged at a position adjacent to the power supply device 2.

The smaller the difference between the frequency of the common mode noise flowing from the lighting circuit 20 of the power supply device 2 to the mounting plate 3 via the power supply case 21 and the frequency (33 kHz to 40 kHz) of the carrier carrier of the radio signal (infrared signal), the more the common mode. There is a high possibility that noise will interfere with the radio signal (received signal). Then, when the common mode noise interferes with the wireless signal (received signal), the possibility that the power supply device 2 malfunctions and the possibility that the power supply device 2 malfunctions increases.

Therefore, in the light source unit B1, since the communication device 4 is arranged at a position adjacent to the power supply device 2, the electric wire 46 that electrically connects the communication device 4 and the power supply device 2 can be shortened. That is, the light source unit B1 can reduce the possibility that the received signal interferes with the common mode noise by shortening the electric wire 46 that electrically connects the communication device 4 and the power supply device 2. As a result, the light source unit B1 can improve the noise immunity (S / N ratio) of the wireless signal.

Further, since the case 43 of the communication device 4 is attached to the power supply case 21 of the power supply device 2, the light source unit B1 can further shorten the electric wire 46 that electrically connects the communication device 4 and the power supply device 2. .. As a result, the light source unit B1 can further improve the noise immunity of the radio signal.

Here, a power cable 8 for feed wiring may be arranged between one side plate 31 of the mounting plate 3 and the power supply device 2 (see FIG. 6). Then, in the light source unit B1, the circuit board 42 is housed in the case 43 so as to be along the wall far from the power cable 8 (the rear wall 432 of the case 43). That is, the light source unit B1 can improve the noise immunity in the wireless signal by separating the circuit board 42 of the communication device 4 from the power cable 8.

Another feature of the light source unit B1 is that an opening 44 is provided in the case 43 of the communication device 4, and the receiving unit 40 receives a wireless signal (infrared signal) through the opening 44. For example, when the light receiving lens 401 of the receiving unit 40 is arranged outside the case 43, the reception range of the radio signal becomes too wide, so that the radio signal transmitted to another light source unit may be received. ..

On the other hand, the light source unit B1 narrows the range in which the receiving unit 40 can receive the wireless signal (infrared signal) by causing the receiving unit 40 to receive the wireless signal (infrared signal) through the opening 44 of the case 43. be able to. As a result, the light source unit B1 can reduce the possibility of erroneously receiving a radio signal (infrared signal) transmitted to another light source unit.

Further, the opening 44 of the case 43 overlaps with the through hole 32 of the mounting plate 3 along the thickness direction of the bottom plate 30 (see FIGS. 5 to 7). Therefore, the radio signal (infrared signal) radiated from the remote controller 7 is received by the receiving unit 40 from the through hole 32 of the mounting plate 3 through the opening 44 of the case 43. For example, when the light receiving lens 401 of the receiving unit 40 is arranged on the surface (lower surface) of the mounting plate 3 (bottom plate 30), the reception range of the radio signal becomes too wide, so that the radio signal transmitted to another light source unit is transmitted. May be received.

On the other hand, in the light source unit B1, the receiving unit 40 receives a wireless signal (infrared signal) from the through hole 32 of the mounting plate 3 through the opening 44 of the case 43 to the receiving unit 40, so that the receiving unit 40 receives the wireless signal (infrared signal). ) Can be narrowed down. As a result, the light source unit B1 can reduce the possibility of erroneously receiving a radio signal (infrared signal) transmitted to another light source unit.

By the way, the through hole 32 is provided at a position that does not overlap with the light source module 1 when viewed from the thickness direction of the bottom plate 30 (see FIG. 7). For example, when the through hole is provided at a position overlapping the light source module 1, the hole is provided at a position overlapping the through hole on the substrate 11, so that the pitch of the LED 10 is partially increased in the vicinity of the hole. As a result, the uniformity of the light distribution characteristics of the light source module may decrease.

On the other hand, the light source unit B1 aims to equalize the light distribution characteristics of the light source module 1 while reducing the possibility of erroneously receiving a radio signal (infrared signal) transmitted to another light source unit. be able to.

Further, in the light source unit B1, the case 43 has a cylindrical peripheral wall 45. The peripheral wall 45 projects from the case 43 so as to surround the opening 44 on the surface of the case 43 (see FIGS. 4 and 5). It is preferable that the tip end (lower end) of the peripheral wall 45 comes into contact with or does not come into contact with the back surface (upper surface) of the bottom plate 30 (see FIG. 5). When the peripheral wall 45 is not provided, the possibility that the radio signal (infrared signal) that has passed through the through hole 32 of the bottom plate 30 reaches the opening 44 of the case 43 and is received by the receiving unit 40 is reduced.

On the other hand, in the light source unit B1, the peripheral wall 45 provided in the case 43 reaches the opening 44 of the case 43 while the radio signal passing through the through hole 32 of the bottom plate 30 is reflected by the inner peripheral surface of the peripheral wall 45. Therefore, there is a high possibility that the reception unit 40 will receive the signal.

Further, the inner peripheral surface of the peripheral wall 45 is formed in a conical trapezoidal shape in which the inner diameter is reduced from the tip (lower end) of the peripheral wall 45 toward the opening 44 (see FIG. 5). Since the inner peripheral surface of the peripheral wall 45 of the light source unit B1 is formed in a conical trapezoidal shape, most of the radio signal (infrared signal) that enters the inside of the peripheral wall 45 through the through hole 32 reaches the opening 44. It can be made to be received by the receiving unit 40. That is, the light source unit B1 can increase the reception sensitivity of the required wireless signal while preventing the reception of the unnecessary wireless signal.

Here, it is assumed that a lighting space E1 in which a large number of lighting fixtures A1 are installed on the ceiling at equal intervals (see FIG. 8). This lighting space E1 is, for example, one floor of an office building, and a plurality of lighting fixtures A1 (light source units B1) are installed so as to be arranged vertically and horizontally at equal intervals. The distance between the plurality of lighting fixtures A1 in the vertical direction (longitudinal direction of the light source unit B1) is referred to as P1, and the distance in the horizontal direction (shortward direction of the light source unit B1) is referred to as P2.

For example, when the operator H1 operates the remote controller 7 to light only one lighting fixture A1 directly above, the possibility that the wireless signal transmitted from the remote controller 7 is received by the adjacent lighting fixture A1 is low. It is desirable to do. That is, the range in which the receiving unit 40 of each light source unit B1 can receive the radio signal is narrower than the sum of the length in the longitudinal direction of the light source unit B1 and twice the interval P1 in the vertical direction, and is short of the light source unit B1. It is preferably narrower than the sum of the length in the hand direction and the interval P2 in the lateral direction twice. However, the reach of the radio signal transmitted from the remote controller 7 is, for example, a range of an angle of 20 degrees from the tip of the remote controller 7 and a distance of 5 m to 6 m from the tip of the remote controller 7.

Therefore, the light source unit B1 is unnecessary because the size of the opening 44, the size of the through hole 32, and the size of the peripheral wall 45 (length in the axial direction and inner diameter) are set to appropriate values. It is possible to increase the reception sensitivity of the required wireless signal while preventing the reception of various wireless signals.

(2) Embodiment 2
The light source unit B2 (hereinafter, abbreviated as light source unit B2) according to the second embodiment of the present disclosure is configured such that the communication device 4 receives a radio signal using a radio wave as a medium. However, among the components of the light source unit B2, the components common to the light source unit B1 are designated by the same reference numerals, and the illustration and description thereof will be omitted as appropriate.

As shown in FIG. 9, the communication device 4 in the light source unit B2 includes a wireless communication circuit 48 and a case 43 accommodating the wireless communication circuit 48.

The wireless communication circuit 48 has a rectangular circuit board 480, a wireless communication module 481 mounted on the surface of the circuit board 480, and an antenna 482 formed on the surface of the circuit board 480 by a conductor (copper foil). is doing.

The wireless communication module 481 receives a wireless signal received by the antenna 482, for example, a wireless signal using a radio wave in the 920 MHz band as a medium, acquires control information from the wireless signal, converts the control information into a PWM signal, and converts the control information into a PWM signal. The converted PWM signal is transmitted to the lighting circuit 20 via the electric wire 46.

The case 43 has almost the same configuration as the case 43 of the light source unit B1 according to the first embodiment, except that it does not have the opening 44 and the peripheral wall 45. That is, since the case 43 is made of a material (synthetic resin) that transmits radio waves, it is not necessary to provide the opening 44 and the peripheral wall 45 unlike the infrared signal.

On the other hand, since the mounting plate 3 facing the communication device 4 is made of metal, a through hole 33 for passing a radio signal using radio waves as a medium is required. The through hole 33 is formed in a rectangular shape. Further, the through hole 33 is arranged at a position facing the antenna 482 along the thickness direction of the bottom plate 30 and at a position not overlapping with the light source module 1. However, the through hole 33 may be arranged at a position not facing the antenna 482 along the thickness direction of the bottom plate 30 and at a position not overlapping with the light source module 1.

Since the communication device 4 is arranged adjacent to the power supply device 2 in the light source unit B2 as well, the received signal is obtained by shortening the electric wire 46 that electrically connects the communication device 4 and the power supply device 2. Can reduce the possibility of interfering with common mode noise. As a result, the light source unit B2 can improve the noise immunity (S / N ratio) of the wireless signal.

(3) Summary The light source unit (B1; B2) according to the first aspect of the present disclosure includes a light source module (1), a power supply device (2), a mounting plate (3), and a communication device (4). Be prepared. The light source module (1) has a plurality of light emitting elements (LED10) and a substrate (11) on which a plurality of light emitting elements are mounted. The power supply device (2) supplies a current to a plurality of light emitting elements to emit light. The light source module (1) is attached to the front surface of the mounting plate (3), and the power supply device (2) is attached to the back surface. The communication device (4) receives the radio signal and transmits the control information included in the radio signal to the power supply device (2) via the electric wire (46). The power supply device (2) is configured to adjust the current supply according to the control information. The mounting plate (3) has a through hole (32; 33) that penetrates from the front surface to the back surface and allows a radio signal to pass through. The communication device (4) is arranged at a position adjacent to the power supply device (2).

The light source unit (B1; B2) according to the first aspect can shorten the electric wire (46) for transmitting control information from the communication device (4) to the power supply device (2). As a result, the light source unit (B1; B2) according to the first aspect can improve the noise immunity in the radio signal.

The light source unit (B1; B2) according to the second aspect of the present disclosure can be realized in combination with the first aspect. In the light source unit (B1; B2) according to the second aspect, the power supply device (2) may have an electric circuit (lighting circuit 20) for supplying a current and a power supply case (21) for accommodating the electric circuit. preferable. The communication device (4) includes a receiving unit (40) for receiving a radio signal, a signal circuit unit (41) for acquiring control information from the radio signal received by the receiving unit (40), a receiving unit (40), and a signal. It is preferable to have a case (43) for accommodating the circuit unit (41). The case (43) is preferably attached to the power supply case (21).

The light source unit (B1; B2) according to the second aspect can further improve the noise immunity in the wireless signal by further shortening the electric wire (46).

The light source unit (B1; B2) according to the third aspect of the present disclosure can be realized in combination with the second aspect. In the light source unit (B1; B2) according to the third aspect, it is preferable that the receiving unit (40) is configured to receive a radio signal using infrared rays as a medium. The case (43) preferably has an opening (44) through which infrared rays pass.

The light source unit (B1; B2) according to the third aspect is a wireless signal (infrared ray) transmitted to another light source unit by narrowing the range in which the receiving unit (40) can receive the wireless signal (infrared ray). ) Can be reduced by mistake.

The light source unit (B1; B2) according to the fourth aspect of the present disclosure can be realized in combination with the third aspect. In the light source unit (B1; B2) according to the fourth aspect, the mounting plate (3) has a through hole (32; 33) that penetrates from the front surface to the back surface of the mounting plate (3) and allows a radio signal to pass through. It is preferable to have. It is preferable that the through hole (32; 33) is provided at a position that does not overlap with the light source module (1) when viewed from the thickness direction of the mounting plate (3).

The light source unit (B1; B2) according to the fourth aspect can aim at equalizing the light distribution characteristics of the light source module (1).

The light source unit (B1; B2) according to the fifth aspect of the present disclosure can be realized in combination with the fourth aspect. In the light source unit (B1; B2) according to the fifth aspect, the case (43) is positioned so that the opening (44) faces the through hole (32; 33) along the thickness direction of the mounting plate (3). It is preferable to be arranged in.

The light source unit (B1; B2) according to the fifth aspect is a wireless signal (B1; B2) transmitted to another light source unit by narrowing the range in which the receiving unit (40) can receive the wireless signal (infrared signal). The possibility of erroneously receiving an infrared signal) can be further reduced.

The light source unit (B1; B2) according to the sixth aspect of the present disclosure can be realized by combining with any one of the third to fifth aspects. In the light source unit (B1; B2) according to the sixth aspect, it is preferable that the case (43) has a cylindrical peripheral wall (45). The peripheral wall (45) preferably projects from the case (43) so as to surround the opening (44) on the surface of the case (43).

The light source unit (B1; B2) according to the sixth aspect can increase the reception sensitivity of the required wireless signal while preventing the reception of the unnecessary wireless signal.

The light source unit (B1; B2) according to the seventh aspect of the present disclosure can be realized by combining with any one of the first to sixth aspects. It is preferable that the light source unit (B1; B2) according to the seventh aspect has a translucent property and includes a cover (5) attached to the mounting plate (3) so as to cover the light source module (1).

The light source unit (B1; B2) according to the seventh aspect irradiates the illumination space with the light emitted from the light source module (1) through the cover (5), and receives the radio signal through the cover (5). It can be received in 40).

The lighting fixture (A1) according to the eighth aspect of the present disclosure includes the light source unit (B1; B2) according to any one of the first to seventh aspects and the fixture main body (B1; B2) that supports the light source unit (B1; B2). 6) and.

The lighting fixture (A1) according to the eighth aspect can improve the noise immunity in a wireless signal.

A1 Lighting equipment B1, B2 Light source unit 1 Light source module 2 Power supply device 3 Mounting plate 4 Communication device 10 LED (light emitting element)
11 Board 32 Through hole 33 Through hole 46 Electric wire

Claims

A light source module having a plurality of light emitting elements and a substrate on which the plurality of light emitting elements are mounted, and a light source module.
A power supply device that supplies electric current to the plurality of light emitting elements to emit light.
A mounting plate to which the light source module is mounted on the front surface and the power supply device is mounted on the back surface.
A communication device that receives a wireless signal and transmits control information contained in the wireless signal to the power supply device via an electric wire.
Equipped with
The power supply unit is configured to adjust the current supply according to the control information.
The mounting plate has a through hole that penetrates from the front surface to the back surface and allows the radio signal to pass through.
The communication device is arranged at a position adjacent to the power supply device.
Light source unit.
The power supply device includes an electric circuit for supplying the current and a power supply case for accommodating the electric circuit.
The communication device includes a receiving unit that receives the radio signal, a signal circuit unit that acquires the control information from the radio signal received by the receiving unit, and a case that houses the receiving unit and the signal circuit unit. Have,
The case is attached to the power supply case.
The light source unit according to claim 1.
The receiving unit is configured to receive the radio signal using infrared rays as a medium.
The case has an opening through which the infrared rays pass.
The light source unit according to claim 2.
The mounting plate has a through hole that penetrates from the front surface to the back surface of the mounting plate and allows the radio signal to pass through.
The through hole is provided at a position that does not overlap with the light source module when viewed from the thickness direction of the mounting plate.
The light source unit according to claim 3.
The case is arranged at a position where the opening faces the through hole along the thickness direction of the mounting plate.
The light source unit according to claim 4.
The case has a cylindrical peripheral wall and has a tubular peripheral wall.
The peripheral wall projects from the case so as to surround the opening on the surface of the case.
The light source unit according to any one of claims 3-5.
It has a translucent property and includes a cover attached to the mounting plate so as to cover the light source module.
The light source unit according to any one of claims 1-6.
With any of the light source units of claim 1-7,
The fixture body that supports the light source unit and
To prepare
lighting equipment.