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 23 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 inside the contour line of the base 21 in view from the lower side in the state that the base 21 is located at the first position. In the state that the base 21 is located at the first position, 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 provided with 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 the lighting of the light source, etc. are accommodated 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 on one end side in one direction of the appliance body. The support portion rotatably supports the base so that the base is movable between a first position and a second position. The first position is the 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 the 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. In a state where the base is located at the first position, the antenna is disposed inside a contour line of the base when viewed from the one end side in the one direction. In a state where the base is located at the first position, the antenna is exposed at the one end side in the one direction of the appliance body.

Advantages of the Invention

[0007] According to the present disclosure, there is an advantage that it is possible to improve 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

Figure 9

[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 etc. are schematic drawings, 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 the ratios of the 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 according to 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 type emergency light that is 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 description 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, 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 the pair of supports 12.

[0013] (1.1) Appliance body As shown in FIGS. 1 and 2, the appliance body 10 has an axis along the vertical direction (one direction) and is a bottomed cylindrical shape with an open bottom surface. Here, the appliance 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 appliance body 10 is formed in a size capable of accommodating the battery unit 3 and the circuit unit 4 inside. The appliance 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 appliance body 10. Also, the appliance body 10 detachably holds the battery unit 3 inside the appliance body 10. As shown in FIG. 1, the battery unit 3 is arranged in a relatively left region inside the appliance body 10.

[0015] The size of the opening 101 on the bottom surface of the appliance body 10 is formed to be large enough to pass the battery unit 3. Thus, in the lighting fixture 1, the battery unit 3 can be replaced (removed and attached) through the opening 101. In the lighting fixture 1 of the present embodiment, the entire bottom surface of the appliance body 10 is open.

[0016] On the side walls on both the left and right sides of the appliance body 10, one support 12 is attached to each (see FIGS. 1 and 2). The pair of supports 12 are formed in a long leaf spring shape. Each of the pair of supports 12 is fixed to the wall of the appliance body 10 at one end in the longitudinal direction, and is configured to be bendable in a direction (upward) where the other end in the longitudinal direction approaches the top surface of the appliance body 10. That is, the appliance 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 appliance body 10.

[0017] (1.2) Battery unit The battery unit 3 includes 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-prism-shaped nickel-metal hydride storage battery, or a cylindrical or rectangular-prism-shaped 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.

[0018] 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). The plurality of storage batteries 30 are housed in the case 31 such that their axial directions are the vertical direction and they are arranged in a row along the radial direction. Also, a connector portion is provided at one end of the lower side of the case 31. The connector portion is configured to electrically connect the plurality of storage batteries 30 that are electrically connected in series within the case 31 to the lighting device 40 of the circuit unit 4 described later.

[0019] (1.3) Circuit Unit The circuit unit 4 includes a lighting device 40 (see FIG. 3) and a housing 41.

[0020] The housing 41 is formed in a box shape from a synthetic resin material. The housing 41 houses the lighting device 40. Also, the housing 41 further houses two operation members 43 (see FIG. 1) that respectively press two push-button switches 406A and 406B described later.

[0021] 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 6 (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 6 via the terminal block.

[0022] The lighting device 40 can be realized by, for example, 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. Here, the program is pre-recorded in the memory of the computer system, but it may be provided through a telecommunication line such as the Internet, or may be provided by being recorded on a non-transitory recording medium such as a memory card.

[0023] 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.

[0024] The DC power supply circuit 400 is composed of, for example, a self-excited switching power supply circuit such as a ringing choke converter. The DC power supply circuit 400 converts an AC voltage supplied from an external power supply 6 into a DC voltage lower than the effective value of the AC voltage.

[0025] The charging circuit 401 operates when being powered from the external power supply 6, and is configured to pass a charging current from the DC power supply circuit 400 to the battery unit 3.

[0026] 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.

[0027] The power failure detection circuit 403 is configured to detect a power failure of the external power supply 6 from the output voltage of the DC power supply circuit 400 and notify the control circuit 404.

[0028] The monitor lamp 405 is composed of, for example, light-emitting diodes that emit 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.

[0029] 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 inspection work. The regular inspection is carried out at regular intervals stipulated by laws and regulations, and is aimed at confirming that the lighting circuit 402 is forced to operate and the light source unit 2 maintains the lighting state for a specified period of time or more.

[0030] 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 push button switch 406B is pressed, or when a transmission frame is received from the receiving unit 407. Also, the control circuit 404 is configured to stop the charging circuit 401 for several seconds and operate the lighting circuit 402 when the other push button switch 406A is pressed, and 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 operation member 43 among the two operation members 43 (see FIG. 1).

[0031] (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, a lens 22, and a support portion 23.

[0032] 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.

[0033] The lens 22 is made of, for example, glass. 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.

[0034] The base 21 is plate-shaped. Here, as shown in FIG. 1, when viewed from below, the base 21 is a substantially circular flat plate having linear sides on the left and right. The base 21 may be formed of a material with high heat dissipation. The base 21 may be made of, for example, metal, and may be formed of, for example, an aluminum material. The base 21 may be subjected to, for example, anodizing treatment.

[0035] 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 disposed at the center of the base 21.

[0036] 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 operating 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.

[0037] The base 21 is disposed at the lower end side of the appliance main body 10. That is, the base 21 is disposed at one end side (lower end side) in one direction (vertical direction) of the appliance main body 10. The base 21 is formed in a shape and size capable of closing the entire opening 101 of the appliance main body 10.

[0038] The support portion 23 rotatably supports the base 21. In the lighting fixture 1 of the present embodiment, the support portion 23 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).

[0039] The support portion 23 includes a support structure 231. The support structure 231 includes, for example, a hinge. As shown in FIGS. 1 and 2, the support portion 23 connects the lower end portion of the right side wall of the appliance main body 10 and the right end portion of the base 21. That is, the support portion 23 is held by the appliance main body 10, and supports the base 21 so that the base 21 can rotate with respect to the appliance main body 10.

[0040] By being rotatably supported by the support portion 23, 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 appliance main body 10. The first position is, for example, the position of the base 21 indicated by the solid line in FIG. 2. As described above, since the base 21 is formed in a shape and size capable of closing the entire opening 101 of the appliance main body 10, in the first position, the base 21 closes the entire opening 101 of the appliance main body 10. Thereby, the base 21 also functions as a cover for closing the opening 101 on the lower surface of the appliance main body 10.

[0042] Since the battery unit 3 is held inside the appliance main body 10, 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 the lower side (one end side of one direction). In the state where the base 21 is located at 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, in the state where the base 21 is located at 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 at 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 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 of 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] As described above, 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 at the first position at the end (left end) opposite to the support portion 23.

[0046] (1.5) 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 composed 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 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 command acquired by the wireless communication circuit 52 includes, 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 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] The housing 50 that houses the antenna 51 (i.e., the antenna 51) is arranged inside 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, as shown in FIG. 1. Further, in a state where the base 21 is located at the first position, 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 appliance main body 10. Therefore, in a state where the base 21 is located at the first position, 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. Thereby, the communication performance of the wireless communication unit 5 can be improved. Note that "in a state where the base 21 is located at the first position, the antenna 51 is exposed on the lower side of the appliance main body 10" may mean that at least a part of the antenna 51 is exposed on the lower side of the appliance main body 10 in a state where the base 21 is located at the first position, or all of the antenna 51 may be exposed on the lower side of the appliance main body 10.

[0051] In the lighting fixture 1 of the present embodiment, the housing 50 that houses the antenna 51 (i.e., the antenna 51) is located below the base 21 (one end side in one direction) in a state where the base 21 is at the first position. Thereby, the communication performance of the wireless communication unit 5 can be further improved. Note that "in a state where the base 21 is located at the first position, the antenna 51 is located below the base 21" may mean that at least a part of the antenna 51 is located below the base 21 in a state where the base 21 is located at the first position, or all of the antenna 51 may be located below the base 21.

[0052] Also, as shown in FIG. 2, in the lighting fixture 1 of the present embodiment, the housing 50 (i.e., the antenna 51) that houses the antenna 51 is held on the second surface 212 of the base 21. Thereby, when the base 21 moves between the first position and the second position, the wireless communication unit 5 also moves together with the base 21. Therefore, compared with a comparative example in which the wireless communication unit is fixed to the appliance main body and the antenna is on the movement locus of the base, the wireless communication unit 5 is less likely to get in the way when the base 21 moves. Thereby, the workability when removing the battery unit 3 from the appliance main body 10 is improved, and the workability when replacing the battery is improved. Note that the wiring connecting the light source 20, the wireless communication unit 5, and the circuit unit 4 may be provided so as to pass through the support portion 23, for example.

[0053] (1.6) Inspection operation Next, the inspection operation of the lighting fixture 1 will be described. For the emergency light, it is desirable to perform switching to the emergency lighting once every six months and confirmation (inspection) of the lighting time (the time of emergency lighting). And as a result of the inspection, if it does not light up for emergency use, or if it goes out before the rated time (30 minutes or 60 minutes) of emergency lighting defined by law has elapsed, it is necessary to take appropriate measures such as replacing it with a new storage battery 30. Hereinafter, a 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.

[0054] 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 checks the storage battery 30. The wireless signal includes a check start command for starting the check operation. In the check operation, the control circuit 404 controls the lighting circuit 402 to pass a current through the light source 20. Thereby, the control circuit 404 checks whether there is an abnormality (capacity reduction) in the storage battery 30. The control circuit 404 causes the wireless communication unit 5 to transmit the result of the check of the storage battery 30 to the external device by a wireless signal. The external device is, for example, the 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.

[0055] That is, the circuit unit 4 further includes a control circuit 404 that controls the lighting circuit 402 according to the wireless signal received by the wireless communication unit 5. Then, the control circuit 404 checks the storage battery 30 according to the wireless signal received by the wireless communication unit 5, and causes the wireless communication unit 5 to transmit the result of the check of the storage battery 30 by a wireless signal.

[0056] Note that the above-described check operation may be performed by the operator who performs the check operation pressing the push button switch 406B, or the operator operating the remote controller to transmit an infrared signal including the check start command to the receiving unit 407, or may be automatically performed by the control circuit 404.

[0057] (1.7) Effect In the lighting fixture 1 of the present embodiment, the base 21 is movable between a first position and a second position, and the antenna 51 of the wireless communication unit 5 is exposed on the lower side (one end side in one direction) of the fixture main body 10 in a state where the base 21 is located at the first position. Thereby, in a state where the base 21 is located at the first position, radio waves, which are the communication medium of the wireless communication unit 5, are less likely to be blocked by the base 21. Therefore, the communication performance of the wireless communication unit 5 can be improved. Further, by positioning the base 21 at the second position, it becomes easy to attach and detach the battery unit 3 to and from the fixture main body 10. As a result, in the lighting fixture 1 provided with the wireless communication unit 5, it becomes possible to improve the workability when replacing the battery.

[0058] Further, in the lighting fixture 1 of the present embodiment, in a state where the base 21 is at the first position, the antenna 51 is located on the lower side (one end side in one direction) of the base 21. Thereby, in a state where the base 21 is located at the first position, it becomes less likely that the base 21 blocks radio waves, and the communication performance of the wireless communication unit 5 can be improved.

[0059] Further, in the lighting fixture 1 of the present embodiment, the antenna 51 is held on the second surface 212 of the base 21. That is, when the base 21 moves between the first position and the second position, the antenna 51 also moves together with the base 21. Thereby, it is less likely that the antenna 51 gets in the way when the base 21 moves. As a result, it becomes possible to further improve the workability when replacing the battery.

[0060] (2) Modification The above-described embodiment is merely 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.

[0061] (2.1) Modification 1 In the above-described embodiment, the antenna 51 is held on the second surface 212 of the base 21. In contrast, 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 main body 10 and is held directly or indirectly by the fixture main body 10. And an exposure opening 295 for exposing the antenna 51 is formed in the base 21. That is, in a state where the base 21 is in the first position, the antenna 51 is located above the base 21 (the other end side opposite to one end side in one direction). And the base 21 has an exposure opening 295 for exposing the antenna 51 at a position overlapping the antenna 51 in the vertical direction (one direction) in a state where the base 21 is in the first position.

[0062] 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. Also, since the exposure opening 295 is formed in the base 21, in a state where the base 21 is in the first position, the base 21 is less likely to block radio waves. Therefore, it is possible to improve the communication performance of the wireless communication unit 5.

[0063] Note that instead of or in addition to the exposure opening 295, a notch for exposing the antenna 51 may be formed in the base 21. Also, "the exposure opening 295 or the notch overlaps the antenna 51 in the vertical direction in a state where the base 21 is in the first position" means that the exposure opening 295 or the notch may overlap at least a part of the antenna 51 or may overlap all of the antenna 51 in the vertical direction in a state where the base 21 is in the first position. Also, the exposure opening 295 or the notch may expose at least a part of the antenna 51 or may expose all of the antenna 51.

[0064] (2.2) Modification 2 In the above-described Modification 1, the antenna 51 is held by the appliance main body 10. In contrast, in the lighting fixture 1B of Modification 2, as shown in FIG. 6, the housing 50 that houses the antenna 51 is held on the first surface 211 of the base 21. That is, the antenna 51 is held by the base 21 on the side of the first surface 211 of the base 21. Note that the portion of the housing 50 that houses the antenna 51 faces the exposed opening 295 formed in the base 21.

[0065] Also in the lighting fixture 1B of Modification 2, as in the lighting fixture 1A of Modification 1, it is possible to improve the workability during battery replacement, and it is possible to improve the communication performance of the wireless communication unit 5.

[0066] (2.3) Modification 3 In the above-described embodiment, the antenna 51 is held on the second surface 212 of the base 21. In contrast, in the lighting fixture 1C of Modification 3, as shown in FIG. 7, the base 21 is provided with a through hole 296, and in a state where the base 21 is located at the first position, the housing 50 that houses the antenna 51 penetrates the through hole 296. That is, in a state where the base 21 is at the first position, the housing 50 (that is, the antenna 51) that houses the antenna 51 penetrates the base 21. Note that the through hole 296 is formed in a shape and size such that the housing 50 does not contact the inner surface of the through hole 296 when the base 21 moves between the first position and the second position.

[0067] In the lighting fixture 1C of Modification 3, in a state where the base 21 is located at the first position, the antenna 51 penetrates the base 21. Therefore, it is possible to improve the communication performance of the wireless communication unit 5. Also, since the base 21 is movable between the first position and the second position, it is possible to improve the workability during battery replacement.

[0068] (2.4) Modification 4 In the above-described embodiment, the support portion 23 supports the base 21 so as to be rotatable about the rotation axis X1 along the front-rear direction. On the other hand, in the lighting fixture 1D of Modification 4, as shown in FIGS. 8 and 9, the support portion 23 supports the base 21 so as to be rotatable about the rotation axis X2 along the vertical direction (one direction). Specifically, the support portion 23 includes a support structure 232. The support structure 232 includes, for example, a swivel. In the lighting fixture 1D of Modification 4, 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.

[0069] Also in the lighting fixture 1D of Modification 4, 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.

[0070] (2.5) Other Modifications In one modification, the lighting fixture 1 is not limited to a dedicated emergency lighting fixture that only performs emergency lighting, but may be a combined battery-integrated emergency lighting fixture 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, in which one or more light sources are lit by an emergency power source and the other light sources are lit by a normal power source.

[0071] In one modification, the lighting fixture 1 is not limited to a recessed ceiling emergency light, but may be a surface-mounted emergency light directly attached to the ceiling.

[0072] 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 light, or a lighting fixture for general lighting such as a so-called downlight. Further, the lighting fixture 1 may be a staircase passage induction light installed on the road surface of a staircase or on a wall facing a dance floor.

[0073] In a modification, in the inspection operation, the control circuit 404 may cause the charging power to be consumed by 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.

[0074] In a modification, the size of the base 21 may be smaller than the opening 101 of the appliance main body 10. That is, in the first position, the base 21 only needs to block at least a part of the opening 101. Further, in the first position, the base 21 only needs to overlap at least a part of the case 31 of the battery unit 3 when viewed from below. Conversely, the size of the base 21 may be larger than the opening 101 of the appliance main body 10.

[0075] In a modification, the shape of the appliance main 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.

[0076] In a modification, the support portion 23 may connect the housing 41 of the circuit unit 4 and the base 21. That is, the support portion 23 may support the base 21 rotatably with respect to the housing 41. Further, the support portion 23 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.

[0077] In a modification, the lighting device 40 may not include the receiving portion 407.

[0078] 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.

[0079] (3) Aspect As can be seen from the above embodiments and modifications, the following aspects are disclosed in this specification.

[0080] The lighting fixture (1; 1A to 1D) according to 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 (23), 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 the 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 (23) rotatably supports the base (21) so that the base (21) is movable 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. In a state where the base (21) is located at the first position, the antenna (51) is disposed inside the contour line (210) of the base (21) when viewed from one end side in one direction. In a state where the base (21) is located at the first position, the antenna (51) is exposed at one end side in one direction of the appliance body (10).

[0081] According to this aspect, it becomes possible to improve the workability during battery replacement. Also, it becomes possible to improve the communication performance of the wireless communication unit (5).

[0082] In the lighting fixture (1; 1C; 1D) according to the second aspect, in the first aspect, in a state where the base (21) is at the first position, the antenna (51) is located on the one end side in one direction with respect to the base (21).

[0083] According to this aspect, it becomes possible to improve the communication performance of the wireless communication unit (5).

[0084] In the lighting fixture (1) of the third aspect, in the second aspect, 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 antenna (51) is held on the second surface (212) of the base (21).

[0085] According to this aspect, it is possible to improve the workability during battery replacement.

[0086] In the lighting fixture (1A; 1B) of the fourth aspect, in the first aspect, with the base (21) in the first position, the antenna (51) is located on the other end side opposite to one end side of the base (21) in one direction. The base (21) has an exposure opening (295) or a notch for exposing the antenna (51) at a position overlapping the antenna (51) in one direction with the base (21) in the first position.

[0087] According to this aspect, it is possible to improve the workability during battery replacement, and it is possible to improve the communication performance of the wireless communication unit (5).

[0088] In the lighting fixture (1B) of the fifth aspect, in the fourth aspect, 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 antenna (51) is held on the base (21) on the first surface (211) side of the base (21).

[0089] According to this aspect, it is possible to improve the workability during battery replacement.

[0090] In the lighting fixture (1C) of the sixth aspect, in the first aspect, the antenna (51) penetrates the base (21) with the base (21) in the first position.

[0091] According to this aspect, it is possible to improve the communication performance of the wireless communication unit (5).

[0092] In the lighting fixture (1; 1A to 1D) of the seventh aspect, in any one of the first to sixth 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).

[0093] According to this aspect, it is possible to improve the workability during battery replacement.

[0094] In the lighting fixture (1D) of the eighth aspect, in any one of the first to seventh aspects, the support portion (23) supports the base (21) so as to be rotatable around a rotation axis (X2) along one direction.

[0095] According to this aspect, it is possible to improve the workability during battery replacement.

[0096] In the lighting fixture (1; 1A to 1C) of the ninth aspect, in any one of the first to seventh aspects, the support portion (23) supports the base (21) so as to be rotatable around a rotation axis (X1) along a second direction orthogonal to a first direction which is one direction.

[0097] According to this aspect, it is possible to improve the workability during battery replacement.

Explanation of Signs

[0098] 1, 1A to 1D Lighting fixture 10 Appliance body 20 Light source 21 Base 210 Outline 211 First surface 212 Second surface 23 Support portion 295 Exposure opening 3 Battery unit 30 Battery 4 Circuit unit 402 Lighting circuit 5 Wireless communication unit 51 Antenna 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 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 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, in a state where the base is located at the first position, the antenna is disposed inside a contour line of the base 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, a lighting fixture.

2. In a state where the base is at the first position, the antenna is located on the one end side in the one direction rather than the base, The lighting fixture according to claim 1.

3. The base has, in a thickness direction of the base, 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, the antenna is held on the second surface of the base, The lighting fixture according to claim 2.

4. In a state where the base is at the first position, the antenna is located on the other end side opposite to the one end side in the one direction rather than the base, the base has an exposure opening or notch for exposing the antenna at a position overlapping the antenna in the one direction in a state where the base is at the first position, The lighting fixture according to claim 1.

5. The base has, in a thickness direction of the base, 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, the antenna is held on the base on the first surface side of the base, The lighting fixture according to claim 4.

6. The antenna penetrates the base in a state where the base is located at the first position, The lighting fixture according to claim 1.

7. The base has a first surface facing the side of the battery unit in a state of being located at the first position in the thickness direction of the base, and a second surface opposite to the first surface. The base holds the light source on the second surface. The lighting fixture according to any one of claims 1 to 6.

8. 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 6.

9. 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 6.

Images