Power supply unit and lighting unit

Abstract

The objective of this disclosure is to curb the increasing size of power supply blocks, including wireless communication devices. [Solution] The power supply A1 comprises a power supply block 1 that supplies power to a load and a wireless communication device 2 that performs wireless communication. The power supply block 1 has a plate-shaped power supply board 10 on which circuit components are mounted on the surface, and a connection part 3 provided on the power supply board 10 that is electrically connected to the wireless communication device 2. The connection part 3 is configured to electrically connect the wireless communication device 2 so that it can be inserted and removed. The power supply board 10 has a housing part 101 that can accommodate at least a part of the wireless communication device 2 when it is electrically connected to the connection part 3.

Description

Technical Field

[0001] The present disclosure relates to a power supply device and a lighting device, and more particularly, to a power supply device having a wireless communication function and a lighting device including the power supply device.

Background Art

[0002] As a conventional example, a lighting fixture (lighting device) described in Patent Document 1 is exemplified. The lighting fixture described in Patent Document 1 (hereinafter referred to as the conventional example) includes an LED module, a lighting circuit that controls lighting of the LED module, and a wireless communication unit that is connected to the lighting circuit and performs wireless communication with other lighting fixtures or lighting control devices.

[0003] The wireless communication unit has a wireless communication module substrate and a wireless communication unit case that houses the wireless communication module substrate. The wireless communication unit case is fixed to the sheet metal of the lighting fixture with screws.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, when the wireless communication module (wireless communication device) is directly connected to the lighting circuit (power supply block) without being housed in the wireless communication unit case, there is a concern that the size of the lighting circuit (power supply block) including the wireless communication module will increase.

[0006] An object of the present disclosure is to provide a power supply device and a lighting device capable of suppressing an increase in the size of a power supply block including a wireless communication device.

Means for Solving the Problems

[0007] A power supply device according to one aspect of the present disclosure comprises a power supply block that supplies power to a load and a wireless communication device that performs wireless communication. The power supply block has a plate-shaped power supply board on which circuit components are mounted on its surface and a connection portion provided on the power supply board that is electrically connected to the wireless communication device. The connection portion is configured to electrically connect the wireless communication device so that it can be inserted into and removed. The power supply board has a housing portion capable of housing at least a part of the wireless communication device when it is electrically connected to the connection portion.

[0008] A lighting device according to one aspect of the present disclosure comprises a power supply device and one or more light sources that are lit by the power supplied from the power supply device. [Effects of the Invention]

[0009] The power supply and lighting devices disclosed herein have the effect of suppressing the increase in size of the power supply block, including the wireless communication device. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a perspective view of a power supply device according to an embodiment of this disclosure. [Figure 2] Figure 2 is a partially omitted side view of the power supply unit shown above. [Figure 3] Figure 3 is a circuit block diagram of the power supply unit shown above. [Figure 4] Figure 4 is a partially omitted perspective view of the power supply unit shown above, showing the wireless communication device and connection parts before connection. [Figure 5] Figure 5 is an exploded perspective view of the power supply unit shown above. [Figure 6] Figure 6 is a plan view of the main components of the power supply unit described above. [Figure 7] Figure 7 is a perspective view of a lighting device according to an embodiment of this disclosure. [Figure 8] Figure 8 is an exploded perspective view of the same lighting device as shown above, viewed from below. [Figure 9] Figure 9 is an exploded perspective view of the same lighting device, seen from above. [Figure 10] Figure 10 is a perspective view of a modified example 1 of the same lighting device. [Figure 11] Figure 11 is an exploded perspective view of a modified example 1 of the same lighting device. [Figure 12] Figure 12 is a perspective view of a modified example 2 of the same lighting device. [Modes for carrying out the invention]

[0011] Hereinafter, a power supply device and a lighting device according to embodiments of this disclosure will be described in detail with reference to the drawings. However, the figures described in the following embodiments are schematic diagrams, and the ratios of the size and thickness of each component do not necessarily reflect the actual dimensional ratios. Furthermore, the configurations described in the following embodiments are merely examples of this disclosure. This disclosure is not limited to the following embodiments, and various modifications are possible depending on the design, etc., as long as the effects of this disclosure can be achieved.

[0012] (1) Overview The power supply device A1 according to this embodiment comprises a power supply block 1 that supplies power to a load and a wireless communication device 2 that performs wireless communication (see Figure 1). The load to which power is supplied from the power supply block 1 is preferably a light-emitting element (light source) such as a light-emitting diode (LED), an organic electroluminescent element, or a laser diode.

[0013] The wireless communication device 2 controls the power supply block 1 to adjust the power according to commands obtained via wireless communication. Preferably, the wireless communication device 2 receives wireless signals transmitted from communication devices such as remote controllers and smartphones, and controls the power supply block 1 according to the commands contained in the wireless signals. The communication medium for wireless communication is preferably electromagnetic waves such as radio waves, infrared rays, and visible light, with radio waves being particularly desirable.

[0014] The power supply block 1 includes a plate-shaped power supply board 10 on which circuit components are mounted on its surface 100, and a connection part 3 provided on the power supply board 10 that is electrically connected to the wireless communication device 2.

[0015] The power supply board 10 is composed of, for example, a rectangular printed wiring board. The circuit components (not shown) include two types of circuit components: inserted components and surface-mounted components. The circuit components that are inserted components are mounted on the surface 100 which is the component surface of the power supply board 10. The circuit components that are surface-mounted components are mainly mounted on the back surface which is the solder surface of the power supply board 10. However, a part of the circuit components that are surface-mounted components may be mounted on the component surface (surface 100).

[0016] The connection part 3 is configured such that the wireless communication device 2 can be electrically connected in a pluggable manner. The connection part 3 preferably has, for example, a receptacle connector (female connector). When the connection part 3 has a receptacle connector, the wireless communication device 2 preferably has a plug connector (male connector) that can be electrically and mechanically connected to the receptacle connector. However, the connection part 3 may have a plug connector and the wireless communication device 2 may have a receptacle connector.

[0017] Here, the power supply board 10 has a housing part 101 that can house at least a part of the wireless communication device 2 in a state of being electrically connected to the connection part 3 (see FIG. 1). The housing part 101 is, for example, a long hole (slit) whose longitudinal direction coincides with the longitudinal direction of the power supply board 10. Note that the housing part 101 may be a hole (slit) that penetrates the power supply board 10 in the thickness direction, or may be a non-penetrating hole (slit). The housing part 101 houses a part of the wireless communication device 2 by inserting it from the component surface (surface 100) toward the solder surface (back surface) (see FIGS. 1 and 2).

[0018] Thus, since the power supply device A1 according to the embodiment has the housing part 101 on the power supply board 10 that can house at least a part of the wireless communication device 2 in a state of being electrically connected to the connection part 3, the distance from the surface 100 of the power supply board 10 to the tip (upper end in FIG. 1) of the wireless communication device 2 can be shortened compared to the case where the housing part 101 is not provided. As a result, the power supply device A1 according to the embodiment can suppress the enlargement of the power block 1 including the wireless communication device 2.

[0019] Furthermore, the lighting device B1 according to the embodiment includes a power supply device A1 according to the embodiment and one or more light sources (LED modules 50) that are lit by the power supplied from the power supply device A1 according to the embodiment (see Figure 8).

[0020] Since the lighting device B1 according to this embodiment includes the power supply device A1 according to this embodiment, it is possible to suppress the increase in size of the power supply block 1, including the wireless communication device 2.

[0021] (2) Details (2-1) Details of the power supply device according to Embodiment 1 The power supply device A1 according to Embodiment 1 (hereinafter abbreviated as power supply device A1) comprises a power supply block 1 and a wireless communication device 2 (see Figure 1).

[0022] (2-1-1) Circuit configuration of the power supply unit Figure 3 shows the circuit configuration of power supply unit A1. Power supply unit A1 comprises a power supply block 1 and a wireless communication device 2.

[0023] The power supply block 1 includes a power connector 12, a power conversion circuit 13, a constant current circuit 14, a control circuit 15, a connection part 3, and the like.

[0024] The power conversion circuit 13 includes, for example, a rectifier circuit such as a diode bridge, a boost chopper circuit (power factor correction circuit), and the like. The power conversion circuit 13 converts AC power supplied from an external power supply P1 through a power connector 12 into DC power. The external power supply P1 is, for example, a commercial power grid that supplies AC voltage and AC current with an effective value of 100V or 200V. However, the power conversion circuit 13 may include a switching power supply circuit with a power factor correction function, such as a buck chopper circuit, a buck-boost chopper circuit, or a flyback converter, instead of a boost chopper circuit.

[0025] The constant current circuit 14 includes, for example, a buck converter. The constant current circuit 14 steps down the DC voltage output from the power conversion circuit 13 and applies it to the LED module 50, and also adjusts the DC current flowing through the LED module 50. However, the constant current circuit 14 may be equipped with various chopper circuits, series regulators, etc., instead of a buck converter.

[0026] The control circuit 15 includes, for example, a microcontroller. The control circuit 15 controls the power conversion circuit 13 to maintain its output voltage at a constant DC voltage. Furthermore, the control circuit 15 controls the step-down chopper circuit of the constant current circuit 14 to match the DC current supplied from the constant current circuit 14 to the LED module 50 to a target value. The control circuit 15 is electrically connected to the wireless communication device 2 via the connection part 3. As will be described later, the control circuit 15 changes the target value of the DC current supplied to the LED module 50 in response to a control signal received from the wireless communication device 2.

[0027] The wireless communication device 2 includes a wireless communication circuit 23, an antenna 24, etc. (see Figure 2). The wireless communication circuit 23 is an integrated circuit configured to perform wireless communication compliant with a wireless communication standard, such as BLE (Bluetooth® low energy). However, the wireless communication circuit 23 only needs to be configured to perform wireless communication compliant with any one standard, such as BLE, Wi-Fi®, ZigBee®, and 920MHz band low-power radio stations (for telecontrol). The wireless communication circuit 23 can send and receive wireless signals through the external antenna 24. The wireless communication device 2 operates by receiving a control power supply voltage from the power supply block 1 through the connection part 3.

[0028] The connection section 3 has, for example, four contacts 31 (see Figure 4). The four contacts 31 include a ground contact, a control power supply voltage contact, and two control signal contacts.

[0029] However, the wireless communication circuit 23 of the wireless communication device 2 acquires a control signal from the wireless signal received via the antenna 24 and outputs the acquired control signal to the control circuit 15 of the power supply block 1 via the connection unit 3. The control circuit 15 dims the LED module 50 by changing the target value of the DC current supplied to the LED module 50 according to the control signal received from the wireless communication circuit 23. If the LED module 50 includes multiple types of LEDs with different light colors, for example, two types of LEDs such as incandescent LEDs and daylight LEDs, the control circuit 15 can also adjust the color of the LED module 50 by individually adjusting the target value of the DC current supplied to the incandescent LEDs and the target value of the DC current supplied to the daylight LEDs.

[0030] (2-1-2) Structure of the power supply unit The power supply block 1 has a board-shaped power supply board 10 on which multiple circuit components (not shown) are mounted on its surface 100 (see Figure 1). The power supply board 10 is, for example, made up of a rectangular printed circuit board. The multiple circuit components include two types of circuit components: through-hole components and surface-mount components. Through-hole components are mounted on the surface 100, which is the component side of the power supply board 10. Surface-mount components are mainly mounted on the back side, which is the solder side of the power supply board 10. However, some surface-mount components may also be mounted on the component side (surface 100). The power conversion circuit 13, constant current circuit 14, and control circuit 15 of the power supply block 1 are made up of the power supply board 10 and printed circuits consisting of multiple circuit components.

[0031] The wireless communication device 2 has a plate-shaped wireless communication substrate 20 (see Figures 2 and 4). A wireless communication circuit 23 is mounted on the surface of the wireless communication substrate 20. An antenna 24 is also provided on the surface of the wireless communication substrate 20. The antenna 24 is made of a conductor (copper foil) formed on the surface of the wireless communication substrate 20.

[0032] A projection 21 is provided at one end (the left end in Figure 4) of the wireless communication board 20 in the longitudinal direction (first direction D1) (see Figure 4). The projection 21 is rectangular in shape, shorter than the width dimension in the short direction of the wireless communication board 20, and is integrally formed with the wireless communication board 20. Four conductors 22 are provided on the surface of the projection 21 (see Figure 4). Each of the four conductors 22 is formed in a rectangular shape with the first direction D1 as its longitudinal direction. The four conductors 22 are arranged parallel to each other with spacing along the short direction of the wireless communication board 20. These four conductors 22 are electrically connected to the wireless communication circuit 23. For example, the two conductors 22 at both ends are configured to make one-to-one contact and conduct electricity with the ground contact 31 and the control power supply voltage contact 31 of the connection part 3. The remaining two conductors 22 are configured to make one-to-one contact and conduct electricity with the two control signal contacts 31 of the connection part 3.

[0033] The connection part 3 has a box body 30 having an opening 300 into which the protruding piece 21 is inserted, four contacts 31 provided inside the box body 30, four terminals (not shown) electrically connected one-to-one with each contact 31, and four leg pieces 33 (see Figure 4). In this embodiment, the connection part 3 is made up of a general-purpose receptacle connector (Type A) compliant with the USB (Universal Serial Bus) standard, but it is not intended to limit the design to this.

[0034] The box body 30 is formed into a bottomed rectangular tube shape by processing a metal plate. The four leg pieces 33 protrude from the sides of the box body 30 along the shorter side of the box body 30. However, the four leg pieces 33 are integrally formed with the box body 30 by the metal plate.

[0035] The four contacts 31 are supported by a rectangular support (not shown) made of an electrically insulating material (e.g., synthetic resin) and housed inside the casing 30. The tips of the four contacts 31 are bent into a V-shape. The four terminals protrude from the side of the casing 30 along the shorter direction of the casing 30. The four terminals are also arranged in a row with spacing along the first direction D1.

[0036] The connector 3 is mounted on the surface 100 of the power supply board 10 at the center of the longitudinal direction of the power supply board 10, and at one end of the short direction of the power supply board 10 (the rear end in Figure 1). However, the connector 3 is mounted on the power supply board 10 such that the opening 300 of the casing 30 faces one end of the longitudinal direction (first direction D1) of the power supply board 10 (the right end in Figure 1). The four terminals of the connector 3 are inserted one by one into the four through-holes provided on the power supply board 10 and soldered to the printed circuit board on the back side (solder side) of the power supply board 10.

[0037] The wireless communication device 2 is mechanically and electrically connected to the connection part 3 by inserting the projection 21 into the opening 300 of the box body 30 along the first direction D1 (see Figures 1 and 2). The projection 21 inserted into the box body 30 from the opening 300 is positioned in the space between the inner surface of the box body 30 and the support. The four conductors 22 provided on the surface of the projection 21 make one-to-one contact and conduction with the four contacts 31 supported by the support. At this time, the V-shaped bent tip deforms, generating contact pressure on each contact 31 against the conductor 22, ensuring reliable contact and conduction between each contact 31 and each conductor 22.

[0038] Here, the power supply board 10 has a housing section 101 capable of housing at least a portion of the wireless communication device 2, which is electrically connected to the connection section 3 (see Figure 1). In this embodiment, the housing section 101 is a long hole (slit) provided near the opening 300 of the housing 30 of the connection section 3, with its longitudinal direction aligned with the longitudinal direction of the power supply board 10. The housing section 101 may be a hole (slit) that penetrates the power supply board 10 in the thickness direction, or it may not be a hole (slit) that penetrates through. The housing section 101 houses a portion of the wireless communication device 2 (the lower part of the wireless communication board 20) by inserting it from the component side (front surface 100) toward the solder side (back surface) (see Figures 1 and 2).

[0039] However, since the power supply unit A1 has a housing section 101 on the power supply board 10 that can accommodate at least a part of the wireless communication device 2 when it is electrically connected to the connection section 3, the distance from the surface 100 of the power supply board 10 to the tip (upper end in Figure 1) of the wireless communication device 2 can be shortened compared to the case where the housing section 101 is not present. As a result, the power supply unit A1 can suppress the increase in size of the power supply block 1, including the wireless communication device 2.

[0040] Furthermore, when the power supply unit A1 is electrically connected to the wireless communication device 2 and the connection unit 3, the antenna 24, which is provided at the end of the wireless communication board 20, protrudes from the solder side (back side) of the power supply board 10 through the housing unit 101 (see Figure 2). In other words, since only low-profile surface-mount circuit components are mounted around the antenna 24, the power supply unit A1 can improve the sensitivity of wireless signal transmission and reception by the antenna 24. However, the power supply unit A1 may also provide the antenna 24 at the end of the wireless communication board 20 opposite to the end housed in the housing unit 101. For example, if the bottom surface of the housing that houses the power supply block 1 and the surface 100 of the power supply board 10 are sufficiently far apart, the sensitivity of wireless signal transmission and reception by the antenna 24 can be improved by providing a slit on the side of the housing.

[0041] (2-1-3) Modified Power Supply Device Next, a modified example of the power supply A1 according to the embodiment will be described with reference to the drawings. However, the basic configuration of the modified power supply A1 described below is the same as the basic configuration of the power supply A1 according to the embodiment. Therefore, components that are common to the basic configuration of the power supply A1 according to the embodiment and components that are substantially common will be denoted by the same reference numerals, and their illustration and description will be omitted as appropriate. In the following description, "substantially common components" means components that differ slightly in shape, size, etc., but have the same function.

[0042] The modified power supply A1 is characterized by the structure of the housing section 101. In the modified version, the housing section 101 is formed such that the width W2 of the tip portion 104 in the insertion direction (first direction D1) is narrower than the width W1 of the portion excluding the tip portion 104 (see Figure 6). In the modified version, the thickness of the wireless communication board 20 is greater than or equal to the width W2 of the tip portion 104 (see Figure 6).

[0043] In other words, in the modified example, the housing portion 101, when viewed from the thickness direction of the power supply board 10, has a tapered trapezoidal tip portion 104 and the portion other than the tip portion 104 is rectangular (see Figure 6).

[0044] Next, the procedure for connecting the wireless communication device 2 to the connection part 3 will be explained.

[0045] First, the worker performing the connection inserts a portion (lower part) of the wireless communication board 20 into the housing portion 101, excluding the tip portion 104.

[0046] Next, the worker moves the wireless communication device 2 in the first direction D1 and inserts the projection 21 into the opening 300 of the housing 30 of the connection part 3. At this time, the lower part of the wireless communication board 20 moves within the housing 101 along the first direction D1. Once the worker has finished inserting the projection 21 into the housing 30 through the opening 300, the tip of the lower part of the wireless communication board 20 is press-fitted into the tip portion 104 of the housing 101 (see Figure 6).

[0047] In the wireless communication device 2 connected to the connection part 3 using the procedure described above, a portion of the wireless communication substrate 20 is pressed into the tip portion 104 of the housing part 101, thereby restricting its movement in the direction of detachment from the connection part 3 (opposite direction to the first direction D1). Therefore, the modified power supply device A1 can prevent the protruding piece 21 of the wireless communication device 2 from unintentionally coming out of the opening 300 of the connection part 3.

[0048] (2-2) Details of the lighting equipment The lighting device B1 according to this embodiment (hereinafter referred to as lighting device B1) comprises a light source unit 5 and a fixture body 6 that supports the light source unit 5 (see Figures 7-9). The light source unit 5 is detachably attached to the fixture body 6 which is directly attached to the ceiling. However, the fixture body 6 may be embedded in the ceiling. Alternatively, the fixture body 6 may be directly attached to the wall or embedded in the wall.

[0049] (2-2-1) Main body of the device The fixture body 6 comprises a long, box-shaped housing recess 60 with an open bottom, a pair of reflectors 61 projecting diagonally upward from the open edges on both sides along the longitudinal direction of the housing recess 60, and a pair of end plates 62 provided at both ends of the housing recess 60 and the pair of reflectors 61 in the longitudinal direction (see Figures 8 and 9). The housing recess 60 and the pair of reflectors 61 are integrally formed by punching and bending a metal plate.

[0050] The fixture body 6 is installed on the ceiling by inserting suspension bolts through at least two of the multiple mounting holes 63 provided on the bottom (top) surface of the housing recess 60, and tightening nuts onto these suspension bolts. In addition, a power cable is inserted through one of the multiple power supply holes 64 provided on the bottom surface of the housing recess 60.

[0051] A terminal block 65 is mounted on the bottom surface of the housing recess 60 (see Figure 8). The terminal block 65 is electrically connected to the power line. The end of the power line is provided with a power connector (not shown) which is electrically connected to a power connector (not shown) of the power supply unit A1.

[0052] However, the power cable inserted through the power hole 64 of the fixture body 6 is electrically connected to the terminal block 65, and via the terminal block 65, power line, and power connector, is electrically connected to the power supply A1 of the light source unit 5.

[0053] The receiving recess 60 has a pair of hooking holes and a pair of hooking parts 601 located near both ends in its longitudinal direction (see Figure 8). The pair of hooking holes are provided on the side wall of one end in the short direction of the receiving recess 60. The pair of hooking parts 601 are positioned on the upper part of the other end in the short direction of the receiving recess 60 (see Figure 8).

[0054] (2-2-2) Light source unit As shown in Figures 8 and 9, the light source unit 5 comprises an LED module 50, a mounting member 51, a cover 52, and a power supply A1.

[0055] The LED module 50 has two substrates 500 and a number of LEDs (Light Emitting Diodes) mounted on the surface (bottom surface) of each substrate 500 (see Figure 8). The light-emitting element, an LED (not shown), is, for example, a packaged white LED for illumination. However, the light-emitting element is not limited to an LED, and may be an organic electroluminescent element or a semiconductor laser element, etc. The number of substrates 500 in the LED module 50 is not limited to two, and may be three or more, or even just one.

[0056] Each circuit board 500 is formed in a long rectangular shape. Numerous LEDs are mounted in a single row at equal intervals along the longitudinal direction of each circuit board 500, in the center of the short side of the surface (bottom surface) of each circuit board 500. The numerous LEDs are electrically connected in series or series-parallel by printed wiring formed on the surface of each circuit board 500. In addition, two sets of connectors 502 are mounted on one end of the longitudinal side of the surface of each circuit board 500 (see Figure 8). The printed wiring formed on the surface of each circuit board 500 is electrically connected via the two sets of connectors 502.

[0057] The mounting member 51 is formed from a metal plate into a long, rectangular trough shape (see Figures 8 and 9). The mounting member 51 has a long, rectangular base plate 510 and a pair of side plates 511 that rise upward from both ends along the longitudinal direction of the base plate 510. The LED module 50 is attached to the underside of the base plate 510 by a plurality of claws 512 that are cut out from the base plate 510 (see Figure 8).

[0058] The mounting member 51 is provided with a pair of hook fittings 513 that protrude outwards from one end in the short direction near both ends in the longitudinal direction (see Figures 8 and 9). Furthermore, the mounting member 51 is provided with a pair of hook springs 514 at the other end in the short direction near both ends in the longitudinal direction (see Figure 9). The pair of hook fittings 513 and the pair of hook springs 514 play a role in holding the light source unit 5 to the fixture body 6, as will be described later.

[0059] Power supply unit A1 is constructed by adding a housing 4 to power supply unit A1 according to the embodiment. The housing 4 is formed in the shape of a long box with one side open, using a metal plate. Power supply unit A1 is attached to the bottom plate 510 of the mounting member 51 such that the opening of the housing 4 faces the upper surface of the bottom plate 510 (see Figure 9).

[0060] The cover 52 has a long, semi-cylindrical cover body 520, a pair of cover ends 521 attached to each of the longitudinal ends of the cover body 520, a pair of protruding walls 522, and a pair of extensions 523 (see Figures 8 and 9). However, the shape of the cover body 520 is not limited to a long, semi-cylindrical shape, but can be any shape such as a rectangular tube.

[0061] The pair of extensions 523 project inward from both ends of the cover body 520 in the short direction along the longitudinal direction of the cover body 520. The pair of protruding walls 522 project upward from the pair of extensions 523 along the longitudinal direction of the cover body 520 (see Figure 9). The cover body 520, the pair of protruding walls 522, and the pair of extensions 523 are integrally formed from a translucent synthetic resin such as acrylic resin or polycarbonate resin.

[0062] The pair of cover ends 521 are formed in a semi-circular shape in plan view from a material having the same light-transmitting properties as the cover body 520. The pair of cover ends 521 are attached one to each of the longitudinal ends of the cover body 520. In other words, both longitudinal ends of the cover body 520 are closed by the cover ends 521.

[0063] The cover 52 houses the mounting member 51 between a pair of protruding walls 522, and is attached to the mounting member 51 by the upper ends of the pair of protruding walls 522 being hooked onto the tips (upper ends) of the pair of side plates 511 of the mounting member 51 (see Figure 9).

[0064] The light source unit 5 is temporarily suspended from the fixture body 6 by hooking the tips of a pair of hook fittings 513 into a pair of hook holes in the housing recess 60. While the light source unit 5 is temporarily suspended, wiring work such as connecting the power connector of the power cable to the power connector 12 of the power supply unit A1 is performed. After the wiring work is completed, the light source unit 5 is hooked onto a pair of hooking springs 514 one by one into a pair of hooking parts 601, and then pressed against the fixture body 6 from below so that the power supply unit A1 is housed in the housing recess 60, and is held in place by the spring force of the pair of hooking springs 514 (see Figure 7).

[0065] (2-2-3) Operation of the lighting device Lighting devices B1 are installed, for example, on the ceiling of an office. Often, multiple lighting devices B1 are installed on the office ceiling in a row, spaced apart both vertically and horizontally. These multiple lighting devices B1 installed on the office ceiling can communicate wirelessly with each other. That is, when the wireless communication device 2 of any one of the lighting devices B1 receives a wireless signal from a remote controller or the like, the wireless communication device 2 of the lighting device B1 that received the wireless signal transmits a wireless signal containing the control information included in the received wireless signal. Then, the wireless communication devices 2 of one or more other lighting devices B1 receive the wireless signal and transmit the received wireless signal further. In this way, the wireless communication devices 2 of multiple lighting devices B1 send and receive wireless signals in a bucket brigade-like fashion, enabling remote control of dimming, color adjustment, etc., by transmitting control information to lighting devices B1 that are beyond the reach of the remote controller's wireless signal.

[0066] (2-3) Modified lighting devices Next, several modifications of the lighting device B1 according to the embodiment will be described with reference to the drawings. However, the basic configurations of the lighting devices B1, B2, and B3 of each modification described below are the same as the basic configuration of the lighting device B1 according to the embodiment. Therefore, components that are common to or substantially common with the basic configuration of the lighting device B1 according to the embodiment will be denoted by the same reference numerals, and their illustration and description will be omitted as appropriate. In the following description, "substantially common components" means components that differ slightly in shape, size, etc., but have the same function.

[0067] (2-3-1) Variation 1 The lighting device B2 in Modified Example 1 is a so-called spotlight and is detachably attached to a lighting wiring duct (also called a lighting duct) (see Figure 10). In the following description, the front-to-back, left-to-right, and up-and-down directions of the lighting device B2 in Modified Example 1 are defined as follows, assuming that the axial direction (longitudinal direction) of the main body 70 and the longitudinal direction of the arm 75 are perpendicular to each other, as shown in Figure 10. That is, the longitudinal direction of the arm 75 is defined as the up-and-down direction, the axial direction of the main body 70 (the direction perpendicular to the longitudinal direction of the arm 75) is defined as the front-to-back direction, and the direction perpendicular to the up-and-down direction and the front-to-back direction is defined as the left-to-right direction (see arrows in Figure 10).

[0068] The lighting device B2 of the modified example 1 comprises a luminaire B21, an arm 75, and a plug unit B22 (see Figure 10). The plug unit B22 is mechanically and electrically detachably attached to a lighting wiring duct installed on the ceiling or the like. The arm 75 is rotatably attached to the lower part of the plug unit B22. The axis of rotation of the arm 75 is parallel to the vertical direction. The luminaire B21 is supported by the arm 75 so as to be rotatable in a plane including the vertical and front-back directions. However, the rotatable range of the luminaire B21 is approximately 90 degrees, from a position where the axial direction of the main body 70 is perpendicular to the longitudinal direction (vertical direction) of the arm 75 (see Figure 10) to a position where the axial direction of the main body 70 is parallel.

[0069] The lighting fixture B21 includes a main body 70, a light source unit 72, a lens unit 73, a power supply A2, an end cover 76, and the like (see Figures 10 and 11).

[0070] The main body 70 has a first main body portion 701 and a second main body portion 702. The first main body portion 701 and the second main body portion 702 are each formed by die-casting an aluminum alloy into a cylindrical shape with open ends. The first main body portion 701 and the second main body portion 702 have the same diameter but different axial lengths. The second main body portion 702 is formed to be longer in the axial length than the first main body portion 701.

[0071] The second main body 702 has a rectangular slit 703 formed from its rear end to the axial center. The width (distance in the left-right direction) of the slit 703 is wider than the width of the arm 75.

[0072] The light source unit 72 includes an LED 720 which is the light source, a holder 721, a pair of connectors 722, a thermal conductive sheet, and a unit body 724 (see Figure 11). The LED 720 is a COB (Chip on Board) type white LED for lighting. The unit body 724 is formed in a disc shape by die-casting an aluminum alloy.

[0073] A rectangular recess is provided in the center of the front of the unit body 724. A rectangular heat conductive sheet is housed in this recess. In addition, one screw insertion hole 725 and one screw hole 726 are provided on both the left and right ends of the unit body 724 (see Figure 11).

[0074] A holder 721 for holding the LED 720 is attached to the front of the unit body 724. The holder 721 is made of synthetic resin and is formed in a frame shape with a square window opening in the center. The holder 721 holds the LED 720 by fitting it into the window. The LED 720, held by the holder 721 and attached to the unit body 724, is in close contact with the thermal conductive sheet and is thermally connected to the unit body 724 via the thermal conductive sheet.

[0075] The lens unit 73 includes a lens, a lens holder, a cover 732, a rotor 733, etc. (see Figure 11). The lens is a Fresnel lens formed from a translucent synthetic resin such as silicone resin, acrylic resin, or polycarbonate resin. The lens holder is formed in an annular shape from synthetic resin. The lens holder holds the lens by surrounding its periphery.

[0076] The cover 732 is formed in a disc shape from a translucent synthetic resin such as acrylic resin. The cover 732 is attached to the rotor 733 as described later. The cover 732 prevents insects from entering the rotor 733 by covering the front surface of the rotor 733 (see Figure 10). The rotor 733 has a cylindrical portion and an annular operating portion 734 provided at the front end of the cylindrical portion (see Figure 10). The lens and lens holder are housed inside the cylindrical portion.

[0077] The lens unit 73 is housed within the first main body portion 701 of the main body 70, as will be described later (see Figures 10 and 11). Here, the lens unit 73 moves in the front-rear direction within the cylindrical portion by operating the operating portion 734 to rotate the rotor 733. In other words, the lens unit 73 can adjust the illumination range of the light emitted from the LED 720 and focused by the lens by changing the relative distance between the LED 720 and the lens by operating the operating portion 734.

[0078] In the modified example 1, the power supply A2 has an AC / DC conversion block 74A and a DC conversion block 74B (see Figure 11).

[0079] The AC / DC conversion block 74A has an AC / DC conversion circuit that converts AC voltage (AC power) supplied from the power system via the lighting wiring duct and plug unit B22 to DC voltage (DC power). The AC / DC conversion circuit consists of a first printed circuit board 741 on which multiple circuit components are mounted on a double-sided printed circuit board. The AC / DC conversion block 74A further includes a first heat sink 743 to which the first printed circuit board 741 is attached, and a first heat conductive member 745 interposed between the first printed circuit board 741 and the first heat sink 743 (see Figure 11).

[0080] The DC conversion block 74B includes a DC conversion circuit, a connection part 3, and a wireless communication device 2. The DC conversion circuit has a DC conversion circuit that converts (steps down) the DC voltage output from the AC / DC conversion block 74A to a DC voltage suitable for the LED 720. The DC conversion circuit is composed of a second printed circuit board 742 on which multiple circuit components are mounted on a double-sided printed circuit board. The connection part 3 is mounted on the second printed circuit board 742. Furthermore, the DC conversion block 74B also includes a second heat sink 744 to which the second printed circuit board 742 is attached, and a second heat conductive member 746 interposed between the second printed circuit board 742 and the second heat sink 744 (see Figure 11).

[0081] The end cover 76 has a cover plate 760, a mounting portion 761, a first boss 764, and a second boss 765 (see Figure 11). The cover plate 760, the mounting portion 761, the first boss 764, and the second boss 765 are integrally formed from aluminum alloy die casting.

[0082] The mounting portion 761 is configured to rotatably attach the arm 75 to the end cover 76. Two screw holes 7610 are provided on the front surface of the mounting portion 761, spaced apart in the left-right direction (see Figure 11). That is, the AC / DC conversion block 74A is attached to the end cover 76 by screwing the first heat sink 743 into these two screw holes 7610. Furthermore, recesses 7611 are provided at both ends of the mounting portion 7611 in the left-right direction. One screw hole 7612 is provided on the bottom surface of each recess 7611 (see Figure 11).

[0083] The first boss 764 is formed in a roughly pyramidal truncated shape. The first boss 764 is integrally formed with the cover plate 760 so as to protrude forward from the lower end of the front surface of the cover plate 760. A screw hole 7640 is formed on the tip surface (front surface) of the first boss 764. The second boss 765 is formed in a roughly prismatic shape. The second boss 765 is integrally formed with the cover plate 760 so as to protrude forward from both sides of the first boss 764 at the lower end of the front surface of the cover plate 760. Two screw holes 7650 are provided on the tip surface (front surface) of the second boss 765. These two screw holes 7650 are located on the left and right sides of the first boss 764 when viewed from the front.

[0084] A DC conversion block 74B is attached to the second boss 765. In other words, two screws, one inserted into each of the screw insertion holes provided in the second heat sink 744, are then screwed into each of the two screw holes 7650, thereby fixing the second heat sink 744 to the end cover 76.

[0085] The end cover 76 is attached to the second main body 702 by being screwed into the screw hole 7640 of the first boss 764 and the two screw holes 7612 of the mounting portion 761.

[0086] However, in Modification 1, the power supply A2 is housed within the second main body 702, making it unlikely to be directly touched by a person. Therefore, the lighting device B2 in Modification 1 does not require the power supply A2 to be housed in a casing.

[0087] (2-3-2) Modification example 2 The lighting device B3 in the modified example 2 is a so-called downlight, which is installed on the ceiling, for example, by being embedded in a recessed hole provided in the ceiling.

[0088] Modified example 2, the lighting device B3, comprises a lamp body 8 and a power supply device A3 (see Figure 12). The lamp body 8 has a truncated cone-shaped frame 80, a cover 81 that closes the bottom surface of the frame 80, three mounting springs 82, and an LED (not shown). The LED is positioned above the bottom surface of the frame 80 and covered by the cover 81. The three mounting springs 82 are fixed to the frame 80 so as to protrude from the edge of the frame 80 along the radial direction of the frame 80.

[0089] In modified example 2, the power supply unit A3 comprises a power supply block 1, a wireless communication device 2, a connection part 3, and a metal housing 4. The housing 4 is formed in the shape of a rectangular parallelepiped. The power supply block 1, the wireless communication device 2, and the connection part 3 are housed within the housing 4. The housing 4 of the power supply unit A3 in modified example 2 is mounted on the upper part of the frame 80.

[0090] In the modified example 2, the lighting device B3 is installed on the ceiling by inserting the power supply A3 into the ceiling space through the recessed hole, and sandwiching the ceiling panel around the recessed hole between the periphery of the frame 80 and the three mounting springs 82.

[0091] However, the lighting device B3 of the modified example, like the lighting device B1 according to the embodiment, can improve the reliability of the electrical connection between the power supply block 1 and the wireless communication device 2.

[0092] (3) Summary A power supply device (A1; A2; A3) according to a first aspect of the present disclosure comprises a power supply block (1) that supplies power to a load and a wireless communication device (2) that performs wireless communication. The power supply block (1) has a plate-shaped power supply board (10) on which circuit components are mounted on its surface and a connection part (3) provided on the power supply board (10) that is electrically connected to the wireless communication device (2). The connection part (3) is configured so that the wireless communication module (2) can be inserted into and removed electrically. The power supply board (10) has a housing part (101) that can accommodate at least a part of the wireless communication device (2) when it is electrically connected to the connection part (3).

[0093] The power supply unit (A1; A2; A3) according to the first embodiment can shorten the distance from the surface (100) of the power supply board (10) to the tip of the wireless communication device (2) compared to the case without the housing (101). As a result, the power supply unit (A1; A2; A3) according to the first embodiment can suppress the increase in size of the power supply block (1) including the wireless communication device (2).

[0094] A power supply device (A1; A2; A3) according to a second aspect of this disclosure can be realized in combination with the first aspect. In the power supply device (A1; A2; A3) according to the second aspect, the housing (101) preferably includes a hole provided on the surface (100) of the power supply board (10).

[0095] In the second embodiment of the power supply device (A1; A2; A3), the housing section (101) can be easily provided on the surface (100) of the power supply board (10).

[0096] A power supply device (A1; A2; A3) according to a third aspect of the present disclosure can be realized by combining it with the second aspect. In the power supply device (A1; A2; A3) according to the third aspect, it is preferable that the housing section (101) is formed such that the width of the tip portion (104) in the direction in which the wireless communication device (2) is inserted into the connection section (3) is narrower than the width of the portion excluding the tip portion (104). It is preferable that the portion of the wireless communication device (2) that is housed in the housing section (101) has a width greater than or equal to the width of the tip portion (104).

[0097] The power supply devices (A1; A2; A3) according to the third embodiment can prevent the protruding piece (21) of the wireless communication device (2) from unintentionally coming out of the connection part (3).

[0098] A power supply device (A1; A2; A3) according to a fourth aspect of this disclosure can be realized in combination with a second or third aspect. In the power supply device (A1; A2; A3) according to the fourth aspect, the housing (101) is preferably formed to penetrate the power supply board (10). A part of the wireless communication device (2) is preferably projected through the housing (101) from the side of the power supply board (10) opposite to the surface (100). An antenna (24) for transmitting and receiving radio waves is preferably provided on the part (of the wireless communication device) that projects from the opposite side.

[0099] The power supply device (A1; A2; A3) according to the fourth embodiment can improve the sensitivity of radio wave transmission and reception by the antenna (24).

[0100] A lighting device (B1; B2; B3) according to a fifth aspect of this disclosure comprises a power supply device (A1; A2; A3) according to any of the first to fourth aspects, and one or more light sources (LED modules 50) that are lit by power supplied from the power supply device (A1; A2; A3).

[0101] The lighting device (B1; B2; B3) according to the fifth embodiment can suppress the increase in size of the power supply block (1), including the wireless communication device (2).

[0102] A lighting device (B1; B2; B3) according to a sixth aspect of this disclosure can be realized in combination with a fifth aspect. In a lighting device (B1; B2; B3) according to a sixth aspect, it is preferable that a wireless communication device (2) controls a power supply block (1) to adjust at least one of the light intensity and light color of the light emitted from the light source in response to a command obtained by wireless communication.

[0103] The lighting device (B1; B2; B3) according to the sixth embodiment allows for remote control of the light source while reducing wiring. [Explanation of symbols]

[0104] A1;A2;A3 Power supply B1;B2;B3 Lighting device 1 Power Block 2 Wireless communication device 3 Connection part 10 Power supply board 21 Protrusion 24 Antennas 50 LED modules (light sources) 100 (Surface of power supply board) 101 Storage Unit 104 (The tip of the storage section)

Claims

1. A power supply block that supplies power to the load, A wireless communication device that performs wireless communication, Equipped with, The aforementioned power supply block is A board-shaped power supply board with circuit components mounted on its surface, A connection part provided on the power supply board and electrically connected to the wireless communication device, It has, The connection portion is configured such that the wireless communication device is electrically connected in a removable manner. The power supply board has a housing section capable of housing at least a part of the wireless communication device in a state electrically connected to the connection section. power supply.

2. The housing portion includes a hole provided on the surface of the power supply board. The power supply device according to claim 1.

3. The housing portion is formed such that the width of the tip portion in the direction in which the wireless communication device is inserted into the connection portion is narrower than the width of the portion excluding the tip portion. The portion of the wireless communication device that is housed in the housing has a width greater than or equal to the width of the tip portion. The power supply device according to claim 2.

4. The aforementioned housing portion is formed to penetrate the power supply board, The part of the wireless communication device protrudes through the housing from the surface of the power supply board opposite to the surface, An antenna for transmitting and receiving radio waves is provided on the portion that protrudes from the opposite side. The power supply device according to claim 2 or 3.

5. A power supply device according to any one of claims 1-3, One or more light sources that are lit by the power supplied from the power supply device, Equipped with, Lighting device.

6. The wireless communication device controls the power supply block to adjust at least one of the light intensity and color of the light emitted from the light source in accordance with the command obtained by the wireless communication. The lighting device according to claim 5.

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