Luminaire

Abstract

To improve workability in replacing a battery.SOLUTION: A luminaire body 10 holds a battery unit 3 and a circuit unit inside. A plate-like base 21 is arranged on the lower side of the luminaire body 10. A support part 6 rotatably supports the base 21 so that the base 21 is movable between a first position where at least part of the battery unit 3 overlaps with the base 21 in view from the lower side and a second position where the battery unit 3 does not overlap with the base 21 in view from the lower side. A radio communication unit 5 has an antenna for performing radio communication using electric waves as media. The antenna is arranged outside the contour line of the base 21 in the state that the base 21 is located at the first position, in view from the lower side. The antenna is exposed to the lower side of the luminaire body 10.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure generally relates to lighting fixtures, and more particularly to lighting fixtures including a battery unit and a wireless communication unit.

Background Art

[0002] Patent Document 1 describes a lighting device including a light source and an antenna. In this lighting device, a light source, a storage battery, a communication module for controlling the antenna, a lighting device for controlling lighting of the light source, etc. are housed inside a cylindrical main body.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the lighting device of Patent Document 1, there is room for improvement in workability when replacing the battery.

[0005] An object of the present disclosure is to improve workability when replacing the battery.

Means for Solving the Problems

[0006] The lighting fixture according to one aspect of the present disclosure includes a light source, a battery unit, a circuit unit, an appliance body, a base, a support portion, and a wireless communication unit. The battery unit has a storage battery. The circuit unit has a lighting circuit that lights the light source with charging power charged in the storage battery. The appliance body holds the battery unit and the circuit unit inside. The base is plate-shaped and is disposed at one end side in one direction of the appliance body. The support portion rotatably supports the base so that the base can move between a first position and a second position. The first position is a position of the base where at least a part of the battery unit overlaps the base when viewed from the one end side in the one direction. The second position is a position of the base where the battery unit does not overlap the base when viewed from the one end side in the one direction. The wireless communication unit has an antenna and performs wireless communication using radio waves as a medium. The antenna is disposed outside the contour line of the base in a state where the base is located at the first position when viewed from the one end side in the one direction. The antenna is exposed at the one end side in the one direction of the appliance body.

Effect of the Invention

[0007] According to the present disclosure, there is an advantage that it is possible to improve the workability during battery replacement.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, the lighting fixture according to the embodiment will be described with reference to the drawings. The drawings referred to in the following embodiments and the like are schematic diagrams, and the sizes and thicknesses of the components in the drawings do not necessarily reflect the actual dimensions, and the ratios of the sizes and thicknesses between the components also do not necessarily reflect the actual dimensional ratios.

[0010] (1) Embodiment As shown in FIGS. 1 to 3, the lighting fixture 1 of the embodiment is an emergency light, which is a type of battery-integrated emergency lighting fixture. The emergency light is an emergency lighting fixture for general lighting to illuminate the evacuation route in the event of a power failure due to a disaster such as a fire. In this embodiment, as an example, the lighting fixture 1 is a ceiling-embedded emergency light embedded in the ceiling.

[0011] In the following description, unless otherwise specified, the front, rear, left, right, up, and down directions indicated by the arrows in FIGS. 1 and 2 are defined as the front, rear, left, right, up, and down directions of the lighting fixture 1 and its components. However, these directions are not intended to limit the directions of use of the lighting fixture 1 and its components. Also, the arrows indicating "front", "rear", "left", "right", "up", and "down" in each figure are only for the purpose of explanation and do not have any physical entity.

[0012] As shown in FIGS. 1 and 2, the lighting fixture 1 includes a light source unit 2 including a light source 20, a battery unit 3, a circuit unit 4, a wireless communication unit 5, a support portion 6, and a fixture body 10. The lighting fixture 1 further includes a pair of supports 12. The lighting fixture 1 is attached to the ceiling by a pair of supports 12.

[0013] (1.1) Fixture Body As shown in FIGS. 1 and 2, the instrument body 10 has an axis along the vertical direction (one direction) and is a bottomed cylindrical shape with an open bottom surface. Here, the instrument body 10 has an opening 101 on the bottom surface and is substantially cylindrical with flat side walls on both the left and right sides.

[0014] The instrument body 10 is formed in a size capable of accommodating the battery unit 3 and the circuit unit 4 inside. The instrument body 10 holds the circuit unit 4 inside. As shown in FIG. 1, the circuit unit 4 is arranged in a relatively right region inside the instrument body 10. Also, the instrument body 10 detachably holds the battery unit 3 inside the instrument body 10. As shown in FIG. 1, the battery unit 3 is arranged in a relatively left region inside the instrument body 10.

[0015] One support 12 is attached to each of the left and right side walls of the instrument body 10 (see FIGS. 1 and 2). The pair of supports 12 are formed in the shape of long leaf springs. Each of the pair of supports 12 is fixed to the wall of the instrument body 10 at one end in the longitudinal direction, and is configured to be bendable in a direction (upward) in which the other end in the longitudinal direction approaches the top surface of the instrument body 10. That is, the instrument body 10 is supported by the ceiling material by sandwiching the ceiling material between a pair of supports 12 inserted into the embedding holes formed in the ceiling surface and a plurality of flange pieces 100 provided on the lower end surface of the instrument body 10.

[0016] (1.2) Battery Unit The battery unit 3 has a plurality of storage batteries 30 (see FIG. 3) and a case 31 that houses the plurality of storage batteries 30. Each of the plurality of storage batteries 30 is, for example, a cylindrical nickel-metal hydride battery. Note that each storage battery 30 may be a rectangular nickel-metal hydride storage battery, or a cylindrical or rectangular lithium-ion storage battery, etc. Also, the number of storage batteries 30 may be any number that can satisfy the standard value of the lighting time required for the emergency light. That is, the battery unit 3 may have one or more storage batteries 30.

[0017] The case 31 is formed in a cylindrical shape with the bottom surfaces on both the upper and lower sides being horseshoe-shaped (U-shaped) (see Fig. 1). A plurality of storage batteries 30 are accommodated in the case 31 with the axial direction being the vertical direction and arranged in a row along the radial direction. Further, a connector portion is provided at one end portion on the lower side of the case 31. The connector portion is configured to electrically connect the plurality of storage batteries 30 electrically connected in series in the case 31 to the lighting device 40 of the circuit unit 4 described later.

[0018] (1.3) Circuit unit The circuit unit 4 has a lighting device 40 (see Fig. 3) and a housing 41.

[0019] The housing 41 is formed in a box shape from a synthetic resin material. The housing 41 houses the lighting device 40. Further, the housing 41 further houses two operation members 43 (see Fig. 1) that respectively press two push-button switches 406A and 406B described later.

[0020] The lighting device 40 is connected to a terminal block attached to the outer surface above the housing 41. A power cable drawn from a lead-in hole provided on the top surface of the appliance main body 10 is detachably connected to the terminal block. The power cable is connected to an external power source 7 (for example, a commercial power system). That is, the lighting device 40 is electrically connected to the power cable connected to the external power source 7 via the terminal block.

[0021] The lighting device 40 can be realized, for example, by a computer system having one or more processors and one or more memories. That is, when one or more processors execute a program recorded in one or more memories of the computer system, it functions as a control circuit 404 described later. The program is recorded in advance in the memory of the computer system here, but may be provided through an electrical communication line such as the Internet, or may be provided recorded on a non-temporary recording medium such as a memory card.

[0022] As shown in FIG. 3, the lighting device 40 includes a DC power supply circuit 400, a charging circuit 401, a lighting circuit 402, a power failure detection circuit 403, a control circuit 404, a monitor lamp 405, two push buttons 406, and a receiving unit 407.

[0023] The DC power supply circuit 400 is composed of a self-excited switching power supply circuit such as a ringing choke converter, for example. The DC power supply circuit 400 converts the AC voltage supplied from the external power supply 7 into a DC voltage lower than the effective value of the AC voltage.

[0024] The charging circuit 401 operates when being powered by the external power supply 7, and is configured to pass a charging current from the DC power supply circuit 400 to the battery unit 3.

[0025] The lighting circuit 402 is configured to constant-currentize the DC current supplied from the battery unit 3 and supply it to the light source unit 2. That is, the circuit unit 4 has a lighting circuit 402 that lights the light source 20 with the charging power charged in the storage battery 30.

[0026] The power failure detection circuit 403 is configured to detect a power failure of the external power supply 7 from the output voltage of the DC power supply circuit 400 and notify the control circuit 404.

[0027] The monitor lamp 405 is composed of, for example, a light-emitting diode that emits green light, and emits light by the charging current supplied from the charging circuit 401 to the battery unit 3. That is, by making the monitor lamp 405 emit light, it is notified that the storage battery 30 is being charged by the charging circuit 401.

[0028] The receiving unit 407 is configured to receive a wireless signal (infrared signal) using infrared rays as a communication medium, demodulate a transmission frame from the received infrared signal, and pass it to the control circuit 404. This infrared signal is transmitted from a wireless transmitter operated by an operator who performs regular inspections. Regular inspections are carried out at intervals specified by laws and regulations, and are aimed at confirming that the lighting circuit 402 is forced to operate and the light source unit 2 maintains a lit state for a specified period of time or more.

[0029] The control circuit 404 is configured to operate the charging circuit 401 and stop the lighting circuit 402 when the power failure detection circuit 403 does not detect a power failure. Also, the control circuit 404 is configured to stop the charging circuit 401 and operate the lighting circuit 402 when the power failure detection circuit 403 detects a power failure. Further, the control circuit 404 is configured to stop the charging circuit 401 and operate the lighting circuit 402 to perform an inspection operation when one of the push button switches 406B is pressed or when a transmission frame is received from the receiving unit 407. Also, when the other push button switch 406A is pressed, the control circuit 404 is configured to stop the charging circuit 401 and operate the lighting circuit 402 for a few seconds, then stop the lighting circuit 402 and operate the charging circuit 401. Each of the two push button switches 406A and 406B is pressed by the corresponding operating member 43 among the two operating members 43 (see FIG. 1).

[0030] (1.4) Light source unit As shown in FIGS. 1 and 2, the light source unit 2 includes a light source 20, a base 21, and a lens 22.

[0031] The light source 20 is a so-called white LED (Light Emitting Diode) for illumination. As shown in FIG. 1, the light source 20 includes a substrate 201, a plurality of LED elements mounted on the substrate 201, and a sealing member 202 that seals the plurality of LED elements. The light source 20 is lit by a direct current supplied from the lighting circuit 402.

[0032] The lens 22 is made of glass, for example. As shown in FIG. 2, the lens 22 is generally frustum-shaped. The lens 22 controls the light distribution of the illumination light emitted from the light source 20.

[0033] The base 21 is plate-shaped. Here, as shown in FIG. 1, the base 21 is a substantially circular flat plate having linear sides on the left and right when viewed from below. The base 21 may be formed of a material with high heat dissipation. The base 21 may be made of metal, for example, and may be formed of an aluminum material, for example. The base 21 may be subjected to anodizing treatment, for example.

[0034] The base 21 has a first surface 211 and a second surface 212 in the thickness direction of the base 21. The light source 20 and the lens 22 are provided on the second surface 212 of the base 21. That is, the base 21 holds the light source 20 on the second surface 212. The light source 20 and the lens 22 are arranged at the center of the base 21.

[0035] In the base 21, four holes (first hole 291, second hole 292, third hole 293, fourth hole 294) are provided so as to be arranged in two vertical and horizontal rows in the vicinity of the position where the lens 22 is provided. The first hole 291 and the second hole 292 are provided at positions corresponding to the two operation members 43. The third hole 293 is provided at a position corresponding to the monitor lamp 405. The fourth hole 294 is provided at a position corresponding to the receiving unit 407.

[0036] The base 21 is arranged on the lower end side of the appliance main body 10. That is, the base 21 is arranged at one end side (lower end side) in one direction (vertical direction) of the appliance main body 10.

[0037] (1.5) Support portion The support portion 6 rotatably supports the base 21. In the lighting fixture 1 of the present embodiment, the support portion 6 supports the base 21 so as to be rotatable around the rotation axis X1 along the front-rear direction (second direction) orthogonal to the vertical direction (first direction).

[0038] As shown in FIG. 1, the support portion 6 includes a support body 60 and a support structure 61. The support body 60 is plate-shaped and has a substantially arcuate shape when viewed from below. The support body 60 is supported by the instrument body 10. The support body 60 is held by the instrument body 10 in a state of covering a portion near the right end of the lower opening 101 of the instrument body 10.

[0039] The support structure 61 includes, for example, a hinge. As shown in FIGS. 1 and 2, the support structure 61 connects the left end portion of the support body 60 and the right end portion of the base 21. In this way, the support portion 6 is held by the instrument body 10 and supports the base 21 so that the base 21 can rotate with respect to the instrument body 10.

[0040] By being rotatably supported by the support portion 6, the base 21 is movable between a first position and a second position.

[0041] In the first position, the base 21 closes at least a part of the opening 101 of the instrument body 10. The first position is, for example, the position of the base 21 shown by the solid line in FIG. 2. With the base 21 in the first position, the entire opening 101 of the instrument body 10 is closed by the support body 60 and the base 21. Thereby, the base 21 also functions as a cover that closes the opening 101 on the lower surface of the instrument body 10 together with the support body 60.

[0042] As described above, the battery unit 3 is held in the relatively left region inside the instrument body 10. Therefore, the first position is the position of the base 21 where at least a part of the battery unit 3 overlaps with the base 21 when viewed from below (one end side of one direction). With the base 21 in the first position, the first surface 211 (the surface where the light source 20 is not arranged) of the base 21 faces the side of the battery unit 3. Also, with the base 21 in the first position, the second surface 212 (the surface where the light source 20 is arranged) of the base 21 faces the side opposite to the battery unit 3. By positioning the base 21 in the first position, it is possible to prevent the battery unit 3 from falling off.

[0043] The second position is the position of the base 21 that opens at least a part of the opening 101 of the appliance main body 10. The second position is, for example, the position of the base 21 indicated by the two-dot chain line in Fig. 2. Also, the second position is the position of the base 21 where the battery unit 3 does not overlap with the base 21 when viewed from the lower side (one end side in one direction). By positioning the base 21 at the second position, the battery unit 3 can be attached to and detached from the appliance main body 10, and the battery unit 3 can be replaced.

[0044] Thus, in the lighting fixture 1 of the present embodiment, since the base 21 is movable between the first position and the second position, it is possible to improve the workability during battery replacement.

[0045] The base 21 may have a locking structure (for example, a claw that catches in a recess formed in the left side wall of the appliance main body 10) for maintaining the base 21 in the first position at the end (left end) on the side opposite to the support portion 6.

[0046] (1.6) Wireless communication unit As shown in Fig. 3, the wireless communication unit 5 includes an antenna 51, a wireless communication circuit 52, and a housing 50 (see Figs. 1 and 2).

[0047] The antenna 51 is, for example, a so-called meander line antenna formed of a conductor (copper foil) having a meander structure formed on the surface of an insulating substrate. However, the antenna 51 is not limited to a meander line antenna, and may be, for example, a half-wavelength dipole, a quarter-wavelength dipole antenna, an inverted F-type antenna, or a microstrip antenna.

[0048] The wireless communication circuit 52 receives a wireless signal received by the antenna 51, for example, a wireless signal using radio waves in the 920 MHz band as a medium. Further, the wireless communication circuit 52 acquires a control command from the wireless signal and transmits the control command to the control circuit 404 of the lighting device 40. Furthermore, the wireless communication circuit 52 transmits, as a wireless signal, a message (for example, the result of inspection) received from the control circuit 404 from the antenna 51. Here, the control commands acquired by the wireless communication circuit 52 include, for example, a command for instructing the control circuit 404 to start an inspection operation and a command for instructing the control circuit 404 to transmit the result of the inspection. That is, the wireless communication unit 5 has the antenna 51 and performs wireless communication using radio waves as a medium.

[0049] The housing 50 houses the antenna 51 and the wireless communication circuit 52. The housing 50 is formed in a box shape, for example, from a synthetic resin material.

[0050] As shown in FIG. 1, the housing 50 is held on the lower surface of the support 60. Therefore, the housing 50 that houses the antenna 51 (that is, the antenna 51) is disposed outside the contour line 210 of the base 21 when viewed from below (one end side in one direction) in a state where the base 21 is located at the first position. Further, the housing 50 that houses the antenna 51 (that is, the antenna 51) is disposed at a position that does not overlap with the movement locus of the base 21 when the base 21 moves between the first position and the second position. Therefore, when the base 21 is moved from the second position to the first position to remove the battery unit 3 from inside the instrument body 10, the wireless communication unit 5 is less likely to interfere with the movement of the base 21. Thereby, it becomes possible to improve the workability during battery replacement. Note that the wiring connecting the light source 20 and the circuit unit 4 may be provided, for example, so as to pass through the support portion 6.

[0051] In addition, in the lighting fixture 1 of the present embodiment, the housing 50 that houses the antenna 51 (i.e., the antenna 51) is exposed on the lower side (one end side in one direction) of the fixture main body 10. As a result, radio waves received by the antenna 51 and radio waves transmitted from the antenna 51 are less likely to be blocked by the base 21. Therefore, the communication performance of the wireless communication unit 5 can be improved. Note that "the antenna 51 is exposed on the lower side of the fixture main body 10" may mean that at least a part of the antenna 51 is exposed on the lower side of the fixture main body 10, or that all of the antenna 51 is exposed on the lower side of the fixture main body 10.

[0052] (1.7) Inspection operation Next, the inspection operation of the lighting fixture 1 will be described. For the emergency lamp, it is desirable to switch to emergency lighting once every six months and check (inspect) the lighting time (the time of emergency lighting). And as a result of the inspection, if it does not light up during emergency or if it goes out before the rated time (30 minutes or 60 minutes) of emergency lighting defined by laws and regulations has elapsed, it is necessary to take appropriate measures, such as replacing the new battery 30. Hereinafter, the case where the inspection operation is performed by the wireless communication unit 5 receiving a wireless signal from an external device will be described as an example.

[0053] When the wireless communication unit 5 receives a wireless signal from an external device, the control circuit 404 controls the lighting circuit 402 according to the wireless signal and inspects the battery 30. The wireless signal includes an inspection start command for starting the inspection operation. In the inspection operation, the control circuit 404 controls the lighting circuit 402 to pass current through the light source 20. Thereby, the control circuit 404 inspects the presence or absence of an abnormality (capacity reduction) in the battery 30. The control circuit 404 causes the inspection result of the battery 30 to be transmitted to the external device by wireless signal from the wireless communication unit 5. The external device is, for example, an operator's smartphone, tablet terminal, or PC. Further, the external device may be an edge server provided in the facility where the lighting fixture 1 is installed, or a cloud server on the network.

[0054] That is, the circuit unit 4 further includes a control circuit 404 that controls the lighting circuit 402 according to the radio signal received by the wireless communication unit 5. And the control circuit 404 inspects the storage battery 30 according to the radio signal received by the wireless communication unit 5, and causes the wireless communication unit 5 to transmit the inspection result of the storage battery 30 by radio signal.

[0055] Note that the above inspection operation may be implemented by an operator who performs the inspection operation pressing the push button switch 406B, or an operator operating a remote controller to transmit an infrared signal including an inspection start command to the receiving unit 407, or may be automatically implemented by the control circuit 404.

[0056] (1.8) Effect In the lighting fixture 1 of the present embodiment, the base 21 is movable between the first position and the second position, and the antenna 51 of the wireless communication unit 5 is disposed outside the contour line 210 of the base 21 when viewed from the lower side (one end side in one direction) in a state where the base 21 is located at the first position. Thereby, the antenna 51 is less likely to get in the way when the base 21 is moved between the first position and the second position. As a result, it is possible to improve the workability during battery replacement.

[0057] Also, in the lighting fixture 1 of the present embodiment, the antenna 51 is exposed on the lower side (one end side in one direction) of the fixture main body 10. Thereby, it becomes difficult for the base 21 to block the radio wave which is the communication medium of the wireless communication unit 5, and the communication performance of the wireless communication unit 5 can be improved.

[0058] (2) Modification The above-described embodiment is only one of various embodiments of the present disclosure. The above-described embodiment can be variously modified according to the design and the like as long as the object of the present disclosure can be achieved. Hereinafter, modifications of the above-described embodiment will be listed. The modifications described below can be applied in appropriate combinations.

[0059] (2.1) Modification 1 In the above-described embodiment, as shown in FIG. 1, the housing 50 is held on the lower surface of the support 60. On the other hand, in the lighting fixture 1A of Modification 1, as shown in FIGS. 4 and 5, the housing 50 that houses the antenna 51 is housed inside the fixture body 10 and is held directly or indirectly by the fixture body 10. And an exposure opening 600 for exposing the antenna 51 is formed in the support 60. That is, the housing 50 (that is, the antenna 51) that houses the antenna 51 is disposed at a position overlapping the support portion 6 in the vertical direction (one direction), and the support portion 6 has an exposure opening 600 that exposes the antenna 51 to the lower side (one end side of one direction).

[0060] In the lighting fixture 1A of Modification 1, since the antenna 51 is located above the base 21, the antenna 51 is less likely to get in the way when the base 21 is moved. Therefore, it is possible to improve the workability during battery replacement. Further, since the exposure opening 600 is formed in the support portion 6, the support portion 6 is less likely to block radio waves. Therefore, it is possible to improve the communication performance of the wireless communication unit 5.

[0061] Note that instead of or in addition to the exposure opening 600, a notch for exposing the antenna 51 may be formed in the support portion 6 (support 60). Further, "the exposure opening 600 or the notch exposes the antenna 51 to the lower side" may mean that the exposure opening 600 or the notch exposes at least a part of the antenna 51 to the lower side, or may mean that the entire antenna 51 is exposed to the lower side.

[0062] (2.2) Modification 2 In the above-described embodiment, as shown in FIG. 1, the housing 50 is held on the lower surface of the support 60. On the other hand, in the lighting fixture 1B of Modification 2, as shown in FIG. 6, the housing 50 (i.e., the antenna 51) that houses the antenna 51 is arranged at a position that does not overlap with the base 21 and the support portion 6 in the vertical direction (one direction). More specifically, a gap (space S1) is provided between the right edge of the support 60 of the support portion 6 and the edge of the opening 101 of the appliance main body 10, and the housing 50 is arranged in this space S1. The housing 50 is exposed downward through this gap (space S1).

[0063] In the lighting fixture 1B of Modification 2, since the antenna 51 is arranged at a position that does not overlap with the base 21 and the support portion 6, the antenna 51 is less likely to get in the way when the base 21 is moved. Therefore, it is possible to further improve the workability when removing the battery unit 3 from the appliance main body 10.

[0064] Note that a member (lid member) different from the support portion 6 and the base 21 may be arranged in the space S1, and the housing 50 may be held on the lower surface of this different member.

[0065] Also, the position of the gap (space S1) where the housing 50 is arranged is not limited to the right side of the support 60. For example, a notch (recess) may be provided at the front end of the base 21, and the housing 50 may be arranged in the notch.

[0066] (2.3) Modification 3 In the above-described embodiment, the support portion 6 supports the base 21 so as to be rotatable around the rotation axis X1 along the front-rear direction. On the other hand, as shown in FIGS. 7 and 8, in the lighting fixture 1C of Modification 3, the support portion 6 supports the base 21 so as to be rotatable around the rotation axis X2 along the vertical direction (one direction). Specifically, the support portion 6 includes a support structure 62. The support structure 62 includes, for example, a swivel. Note that in the lighting fixture 1C of Modification 3, the length of the operation member 43 is short, and the lower end of the operation member 43 is above the first surface 211 of the base 21.

[0067] Even in the lighting fixture 1C of Modification 3, similar to the lighting fixture 1 of the embodiment, it is possible to improve the workability during battery replacement and to improve the communication performance of the wireless communication unit 5.

[0068] (2.4) Other Modifications In one modification, the lighting fixture 1 is not limited to a dedicated emergency lighting fixture that only performs emergency lighting, and may be a combined type emergency lighting fixture with a built-in battery that performs both normal lighting and emergency lighting. Alternatively, the lighting fixture 1 may be a type of emergency lighting fixture having two or more light sources, and one or more light sources are lit by an emergency power source, and the other light sources are lit by a normal power source.

[0069] In one modification, the lighting fixture 1 is not limited to a recessed ceiling emergency light, and may be a surface-mounted emergency light directly attached to the ceiling.

[0070] In one modification, the lighting fixture 1 is not limited to an emergency light, and may be, for example, an emergency lighting fixture other than an emergency light such as an induction lamp, or a lighting fixture for general lighting such as a so-called downlight. Further, the lighting fixture 1 may be a staircase passage induction lamp installed on the road surface of a staircase or on a wall facing a dance floor.

[0071] In one modification, in the inspection operation, the control circuit 404 may consume the charging power with a dummy load. The dummy load includes, for example, at least one of a resistor and a diode. Further, the dummy load may be a light source different from the light source 20. In this case, it is preferable that the other light source is covered with a case or the like so that the light emitted from the other light source does not leak to the outside.

[0072] In one modification, the shape of the appliance body 10 is not limited to a substantially cylindrical shape, and may be a rectangular parallelepiped shape, a cylindrical shape with a polygonal shape when viewed from below, or the like.

[0073] In a modification, the support portion 6 may connect the housing 41 of the circuit unit 4 and the base 21. That is, the support portion 6 may support the base 21 rotatably with respect to the housing 41. Further, the support portion 6 may support the base 21 rotatably with respect to a member other than the housing 41 of the appliance main body 10 or the circuit unit 4.

[0074] In a modification, the lighting device 40 may not include the receiving portion 407.

[0075] In a modification, the base 21 is not limited to a flat plate shape, and may be a curved plate shape, or may have appropriate unevenness, claws, or the like.

[0076] (3) Aspect As can be seen from the above embodiments and modifications, the following aspects are disclosed in this specification.

[0077] The lighting fixture (1; 1A to 1C) of the first aspect includes a light source (20), a battery unit (3), a circuit unit (4), an appliance body (10), a base (21), a support portion (6), and a wireless communication unit (5). The battery unit (3) has a storage battery (30). The circuit unit (4) has a lighting circuit (402) that lights the light source (20) with charging power charged in the storage battery (30). The appliance body (10) holds the battery unit (3) and the circuit unit (4) inside. The base (21) is plate-shaped and is disposed at one end side in one direction of the appliance body (10). The support portion (6) rotatably supports the base (21) so that the base (21) can move between a first position and a second position. The first position is the position of the base (21) where at least a part of the battery unit (3) overlaps the base (21) when viewed from one end side in one direction. The second position is the position of the base (21) where the battery unit (3) does not overlap the base (21) when viewed from one end side in one direction. The wireless communication unit (5) has an antenna (51) and performs wireless communication using radio waves as a medium. The antenna (51) is disposed outside the contour line (210) of the base (21) in a state where the base (21) is located at the first position when viewed from one end side in one direction. The antenna (51) is exposed at one end side in one direction of the appliance body (10).

[0078] According to this aspect, it is possible to improve the workability during battery replacement. Also, it is possible to improve the communication performance of the wireless communication unit (5).

[0079] In the lighting fixture (1A) of the second aspect, in the first aspect, the antenna (51) is disposed at a position overlapping the support portion (6) in one direction. The support portion (6) has an exposure opening (600) or notch that exposes the antenna (51) at one end side in one direction.

[0080] According to this aspect, it is possible to improve the workability during battery replacement while improving the communication performance of the wireless communication unit (5).

[0081] In the lighting fixture (1B) of the third aspect, in the first aspect, the antenna (51) is disposed at a position that does not overlap with the base (21) and the support portion (6) in one direction.

[0082] According to this aspect, it is possible to improve the workability during battery replacement.

[0083] In the lighting fixture (1; 1A to 1C) of the fourth aspect, in any one of the first to third aspects, the base (21) has a first surface (211) facing the side of the battery unit (3) in a state of being located at the first position in the thickness direction of the base (21), and a second surface (212) opposite to the first surface (211). The base (21) holds the light source (20) on the second surface (212).

[0084] According to this aspect, it is possible to improve the workability during battery replacement.

[0085] In the lighting fixture (1C) of the fifth aspect, in any one of the first to fourth aspects, the support portion (6) supports the base (21) rotatably around a rotation axis (X2) along one direction.

[0086] According to this aspect, it is possible to improve the workability during battery replacement.

[0087] In the lighting fixture (1; 1A; 1B) of the sixth aspect, in any one of the first to fourth aspects, the support portion (6) supports the base (21) rotatably around a rotation axis (X1) along a second direction orthogonal to a first direction which is one direction.

[0088] According to this aspect, it is possible to improve the workability during battery replacement.

Explanation of Reference Numerals

[0089] 1, 1A to 1C Lighting fixture 20 Light source 21 Base 210 Contour line 211 First surface Page 212 3 Battery unit 30 Storage battery 4 Circuit unit 402 Lighting circuit 5 Wireless communication unit 51 Antenna 6 Support part 600 Exposed opening X1 Rotation axis X2 Rotation axis

Claims

1. A light source, a battery unit having a storage battery, a circuit unit having a lighting circuit for lighting the light source with the charging power charged in the storage battery, an appliance body that holds the battery unit and the circuit unit inside, a base that is plate-shaped and is disposed at one end side in one direction of the appliance body, a support portion that rotatably supports the base so that the base is movable between a first position where at least a part of the battery unit overlaps the base when viewed from the one end side in the one direction and a second position where the battery unit does not overlap the base when viewed from the one end side in the one direction, a wireless communication unit having an antenna and performing wireless communication using radio waves as a medium, and the antenna, is disposed outside the contour line of the base in a state where the base is located at the first position when viewed from the one end side in the one direction, is exposed at the one end side in the one direction of the appliance body, a lighting fixture.

2. The antenna is disposed at a position overlapping the support portion in the one direction, the support portion has an exposure opening or notch for exposing the antenna at the one end side in the one direction, The lighting fixture according to claim 1.

3. The antenna is disposed at a position not overlapping the base and the support portion in the one direction, The lighting fixture according to claim 1.

4. The base has a first surface facing the side of the battery unit in a state where the base is located at the first position and a second surface opposite to the first surface in the thickness direction of the base, the base holds the light source on the second surface, The lighting fixture according to any one of claims 1 to 3.

5. The support portion supports the base rotatably around a rotation axis along the one direction, The lighting fixture according to any one of claims 1 to 3.

6. The support portion supports the base rotatably around a rotation axis along a second direction orthogonal to a first direction which is the one direction, The lighting fixture according to any one of claims 1 to 3.

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