Luminaire

Abstract

To restrain a deterioration in charging characteristics of an emergency power supply unit while restraining an increase in size of an appliance body.SOLUTION: An appliance body 10 supports an emergency illuminating device 3 arranged next to a normal illuminating device 2. An emergency power source unit 5 is supported by the appliance body 10 so as not to overlap with an emergency light source unit 4 as viewed from a predetermined direction. The predetermined direction is a direction orthogonal to a direction (horizontal direction) in which the normal illuminating device 2 and the emergency illuminating device 3 are arranged, and a direction (vertical direction) in which the normal illuminating device 2 and the emergency illuminating device 3 protrude outside the appliance body 10. A control device 6 is supported by the appliance body 10 so as to overlap with the emergency light source unit 4 as viewed from the predetermined direction. A cover 7 comprises a part (second cover 72) arranged between the normal illuminating device 2 and the emergency illuminating device 3.SELECTED DRAWING: Figure 11

Description

[Technical field]

[0001] The present invention relates to a lighting fixture, and more particularly to a lighting fixture that provides normal lighting and emergency lighting. [Background technology]

[0002] As a conventional example, the lighting fixture described in Patent Document 1 is exemplified. This conventional example includes a fixture body, a normal light source unit for normal lighting, and an emergency lighting device for emergency lighting. The fixture body is formed in a long rectangular box shape with an opening on the bottom. The normal light source unit includes a plurality of LED modules, a mounting member to which each LED module is attached, a cover attached to the mounting member so as to cover each LED module, and a power supply device that lights each LED module. The normal light source unit is housed in the fixture body so that the cover is exposed from the bottom of the fixture body.

[0003] The emergency lighting device includes an emergency light source unit and a control device. The emergency light source unit includes an LED module, a lens, a cover, an emergency power source (storage battery), etc. The lens is disposed in front of the LED module. The cover is disposed in front of the LED module so as to expose the lens forward. The emergency power source is disposed behind the LED module. The control device includes a charging circuit that charges the emergency power source with power supplied from the normal power source, and an emergency power source circuit that uses the emergency power source as a power source to light up the LED module when the normal power source is interrupted. The control device also includes a control circuit that receives an operation input from an inspection switch and performs an inspection operation. The normal power source is, for example, a power source (commercial AC power source) that supplies power to a power source device of the normal light source unit. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-134208 A Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, the charging characteristics of a storage battery used as an emergency power source, for example, a nickel-metal hydride battery, show that the charging efficiency decreases as the temperature increases. Therefore, it is preferable to place the emergency power source as far away as possible from heat sources (such as light sources, and power supply devices and control devices that turn on the light sources). However, placing the emergency power source away from the heat source may lead to an increase in the size of the device body that supports the emergency power source and the heat source.

[0006] An object of the present invention is to provide a lighting fixture that can suppress deterioration of the charging characteristics of an emergency power supply unit while preventing an increase in size of the fixture body. [Means for solving the problem]

[0007] A lighting fixture according to one aspect of the present invention includes a normal lighting device that performs normal lighting, an emergency lighting device that performs emergency lighting, and a fixture body that supports the normal lighting device and the emergency lighting device. The emergency lighting device includes an emergency light source unit, an emergency power supply unit having at least one storage battery, a control device that charges the storage battery and lights up the emergency light source unit with power discharged from the storage battery, and a cover that has a hole through which light emitted from the emergency light source unit passes and covers the emergency light source unit and the emergency power supply unit. The fixture body supports the emergency lighting device next to the normal lighting device. The emergency power supply unit is supported by the fixture body so as not to overlap with the emergency light source unit when viewed from a predetermined direction. The predetermined direction is a direction perpendicular to the direction in which the normal lighting device and the emergency lighting device are arranged, and is a direction in which the normal lighting device and the emergency lighting device protrude outside the fixture body. The control device is supported by the fixture body so as to overlap with the emergency light source unit when viewed from the predetermined direction. The cover has a portion disposed between the normal lighting device and the emergency lighting device. Effect of the Invention

[0008] The present invention can provide a lighting fixture that can suppress deterioration of the charging characteristics of an emergency power supply unit while preventing an increase in size of the fixture body. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is an exploded perspective view of a lighting fixture according to one embodiment of the present invention. [Diagram 2] Fig. 2A is a front view of the lighting fixture of the same, Fig. 2B is a plan view of the same, and Fig. 2C is a left side view of the same. [Diagram 3] FIG. 3 is a perspective view of an emergency lighting device in the lighting fixture. [Figure 4] Fig. 4A is a front view of the emergency lighting device of the same, Fig. 4B is a plan view of the same, and Fig. 4C is a right side view of the same. [Diagram 5] 5A and 5B are rear and bottom views of the emergency lighting device of the same. [Figure 6] FIG. 6 is an exploded perspective view of the emergency lighting device. [Figure 7] FIG. 7 is a cross-sectional view of the emergency lighting device. [Figure 8] FIG. 8 is an exploded perspective view of the emergency lighting device. [Figure 9] FIG. 9 is an exploded perspective view of an emergency light source unit and a control device in the lighting fixture. [Figure 10] FIG. 10 is an exploded perspective view of the emergency power supply unit in the lighting fixture. [Figure 11] FIG. 11 is an exploded perspective view of the above lighting fixture with a portion thereof omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] An embodiment of a lighting fixture according to the present invention will be described in detail with reference to the drawings. The lighting fixture 1 of this embodiment is, for example, a ceiling mounted lighting fixture that is directly attached to the ceiling of an office or the like, but may also be a ceiling recessed lighting fixture or a lighting fixture that is attached to a wall. Note that the configuration described in the following embodiment is merely one example of the present invention. The present invention is not limited to the following embodiment, and various modifications are possible depending on the design, etc., as long as the effects of the present invention can be achieved.

[0011] 1 and 2A to 2C, the lighting fixture 1 of this embodiment includes a normal use lighting device 2 that provides normal lighting, an emergency lighting device 3 that provides emergency lighting, and a fixture body 10 that houses the normal use lighting device 2 and the emergency lighting device 3. In the following description, unless otherwise specified, the up-down, left-right, and front-rear directions of the lighting fixture 1 are defined in the orientation shown in FIG.

[0012] The fixture body 10 is formed in a long box shape from a metal material. The fixture body 10 has a long rectangular flat top plate 11 and a pair of first side plates 12 protruding downward from each of two edges along the longitudinal direction (left-right direction) of the top plate 11. The fixture body 10 further has a pair of second side plates 13 protruding downward from each of two edges along the short direction (front-back direction) of the top plate 11. Furthermore, the fixture body 10 has an opening on the lower surface facing the top plate 11. The top plate 11 has a hole 110 for passing an electric wire at approximately the center in the left-right direction. The top plate 11 also has holes 111 for passing a hanging bolt at positions near both ends in the left-right direction (see FIG. 1). Furthermore, a terminal block 14 to which the electric wire drawn from the hole 110 is connected is attached to the lower surface of the top plate 11.

[0013] The regular lighting device 2 includes a regular light source, a mounting member 21 to which the regular light source is attached, a light-transmitting cover 20 that covers the regular light source, and a power supply device that lights up the regular light source. The regular light source has a long board and a number of LEDs (light emitting diodes) mounted on the surface of the board. The mounting member 21 is formed into a long gutter shape from a metal material. The mounting member 21 has a bottom plate formed into a long rectangular plate shape and a pair of side plates 210 that rise upward from both ends in the short direction (front-rear direction) of the bottom plate. The regular light source is attached to the lower surface of the bottom plate of the mounting member 21. The power supply device is configured to convert AC power supplied from a regular power source (for example, a commercial AC power source) via a terminal block 14 into DC power. The power supply device is attached to the upper surface of the bottom plate of the mounting member 21. The regular light source and the power supply device are electrically connected by an electric wire inserted into an insertion hole provided in the bottom plate. The utility light source is turned on by receiving DC power from a power supply device via an electric wire.

[0014] The light-transmitting cover 20 is made of a light-transmitting synthetic resin material such as acrylic resin or polycarbonate resin, and is formed in a long box shape with an open top. The bottom surface of the light-transmitting cover 20 is formed in a curved shape that protrudes gently downward from both ends toward the center in the short side direction (front-rear direction) (see FIG. 1). The synthetic resin material forming the light-transmitting cover 20 contains a diffusing material. That is, the light emitted from the regular light source is diffused when passing through the light-transmitting cover 20.

[0015] The regular lighting device 2 is attached to the fixture body 10 such that the light-transmitting cover 20 is projected downward from the opening of the fixture body 10 by housing the light-transmitting cover 20 (the pair of side plates 210 of the mounting member 21, the power supply device, etc.) in the fixture body 10, and the regular lighting device 2 is attached to the fixture body 10 (see Figs. 2A to 2C). The regular lighting device 2 is detachably attached to the fixture body 10 such that the light-transmitting cover 20 covers most of the opening of the fixture body 10 (see Figs. 2A to 2C). Here, the fixture body 10 forms a space (dead space) between the mounting member 21 of the regular lighting device 2 and the top plate 11. The power supply device of the regular lighting device 2 is disposed in the dead space of the fixture body 10. However, the structure for detachably attaching the regular lighting device 2 to the fixture body 10 is the same as the conventional example described in Patent Document 1, and therefore detailed description and illustration will be omitted.

[0016] Next, the emergency lighting device 3 will be described in detail with reference to the drawings.

[0017] The emergency lighting device 3 includes an emergency light source unit 4, an emergency power supply unit 5, a control device 6, a cover 7, and a clamp 8 (see Figs. 1 to 8).

[0018] As shown in Figs. 7 and 8, the emergency light source unit 4 has an LED module 40, a holder 41, a pair of terminal boards 42, a heat dissipation sheet 43, and a lens 44. The LED module 40 is configured by mounting at least one LED chip at the center of a rectangular flat mounting board 400. The LED chip is preferably a blue light-emitting diode that emits blue light. The mounting surface (lower surface) of the mounting board 400 including the LED chip is sealed with a sealing resin 401 mixed with a fluorescent material that converts the wavelength of the blue light emitted from the LED chip (see Fig. 8). Furthermore, the mounting board 400 has electrodes on the lower surfaces of a pair of corners located diagonally opposite each other. One electrode is electrically connected to the cathode of the LED chip, and the other electrode is electrically connected to the anode of the LED chip. Furthermore, these two electrodes are electrically connected to the corresponding terminal boards 42 of the pair of terminal boards 42.

[0019] Lens 44 is made of, for example, glass, and has lens body 440 and annular outer flange 441 protruding outward from the periphery of lens body 440 (see FIG. 8). Lens 44 has aspheric entrance surface 442 and exit surface 443 (see FIG. 7), and is preferably a wide-angle light distribution lens that realizes a so-called batwing-shaped light distribution characteristic. However, lens 44 may be formed of a synthetic resin material (such as polycarbonate resin) in which glass fiber is mixed to improve heat resistance (flame retardancy).

[0020] The heat dissipation sheet 43 is preferably made of a sheet material made of silicone resin having high thermal conductivity, electrical insulation properties, and flame retardancy. The heat dissipation sheet 43 is in contact with the upper surface of the mounting substrate 400 of the LED module 40.

[0021] Holder 41 is preferably made of a synthetic resin material such as polycarbonate resin and is formed in a roughly diamond shape when viewed from above and below (see FIG. 8). Holder 41 holds LED module 40 and lens 44 by overlapping lens body 440 of lens 44 on the light emitting surface (lower surface) of LED module 40. Holder 41 also has terminal board holding portion 410. Terminal board holding portion 410 is formed in a rectangular tube shape extending upward, and holds a pair of terminal boards 42 housed therein (see FIGS. 7 and 8).

[0022] As shown in FIG. 10, the emergency power supply unit 5 includes a plurality of dry cell type storage batteries 50 (five in the illustrated example), a case 51 made of a synthetic resin material that houses the plurality of storage batteries 50, a first conductor 54, and a second conductor 55. The case 51 includes a case body 52 and a case cover 53. The case body 52 includes a rectangular bottom wall 520 and a pair of first side walls 521 that protrude downward from both front and rear end edges of the bottom wall 520. The case body 52 also includes a second side wall 522 that protrudes downward from the right end edge of the bottom wall 520, and a third side wall 523 that protrudes downward from the left end edge of the bottom wall 520. However, the third side wall 523 is formed so as to be higher in the up-down direction than the pair of first side walls 521 and second side walls 522.

[0023] The bottom wall 520 has five protruding portions 526 protruding downward from its lower surface. These five protruding portions 526 are lined up in the left-right direction on the lower surface of the bottom wall 520. The lower surface of each protruding portion 526 is formed into a semi-cylindrical surface shape. One storage battery 50 is placed on and supported on the lower surface of each protruding portion 526 (see FIG. 7). However, of the five protruding portions 526, the leftmost protruding portion 526 is located lower than the other four protruding portions 526.

[0024] Each of the pair of first side walls 521 has a pair of protrusions 5210. The pair of protrusions 5210 are formed in a rectangular plate shape and protrude downward from the lower end of the first side wall 521. Each of the protrusions 5210 has a triangular prism-shaped claw 5211 at its tip (lower end). However, the claw 5211 of each of the protrusions 5210 on the front first side wall 521 protrudes forward, and the claw 5211 of each of the protrusions 5210 on the rear first side wall 521 protrudes rearward.

[0025] A protrusion 524 protrudes rightward from the rear end of the right side surface of the second side wall 522. The protrusion 524 is formed in a roughly rectangular parallelepiped shape. However, it is preferable that the lower right side of the protrusion 524 be formed in a convex curved shape.

[0026] The third side wall 523 is formed in a rectangular plate shape. The third side wall 523 has a terminal holding portion 527 at the lower front part on its left side surface. The terminal holding portion 527 is formed in a square tube shape with its axial direction coinciding with the up-down direction. The space inside the terminal holding portion 527 is divided into two by a partition wall 5270 (see FIG. 10). The terminal holding portion 527 has a rectangular plate-shaped guide piece 5271 at the upper end part on its front surface. The guide piece 5271 protrudes forward from the front surface of the terminal holding portion 527 with its thickness direction coinciding with the left-right direction.

[0027] The case cover 53 has a rectangular first bottom wall 530, a rectangular first side wall 531 protruding diagonally downward to the left from the left edge of the first bottom wall 530, and a pair of second side walls 532 protruding upward from both front and rear end edges of the first bottom wall 530 and the first side wall 531. The case cover 53 also has a third side wall 533 protruding upward from the right edge of the first bottom wall 530, and a second bottom wall 534 protruding leftward from the left edge of the first side wall 531.

[0028] Each of the pair of second side walls 532 has a pair of through holes 5320. In addition, the front second side wall 532 is formed in a stepped shape.

[0029] The third side wall 533 has a protrusion 5330. The protrusion 5330 protrudes upward from an upper end near the rear end of the third side wall 533. The protrusion 5330 has a triangular prism-shaped claw 5331 at its tip (upper end). The claw 5331 protrudes rightward from the right side surface at the upper end of the protrusion 5330.

[0030] The second bottom wall 534 is formed in a rectangular plate shape. The second bottom wall 534 has a lid portion 535 at its front left end. The lid portion 535 is formed so as to have a U-shape when viewed from the left-right direction.

[0031] The five storage batteries 50 are arranged alternately along the radial direction. One end (right end) of the first conductor 54 is electrically connected to the negative terminal of the rightmost storage battery 50. One end (right end) of the second conductor 55 is electrically connected to the positive terminal of the leftmost storage battery 50. The positive terminal of the rightmost storage battery 50 and the negative terminal of the second storage battery 50 from the right are electrically connected by a conductor plate 56. The positive terminal of the second storage battery 50 from the right and the negative terminal of the third storage battery 50 from the right are electrically connected by the conductor plate 56. The negative terminal of the leftmost storage battery 50 and the positive terminal of the second storage battery 50 from the left are electrically connected by the conductor plate 56. The positive terminal of the third storage battery 50 from the right and the negative terminal of the second storage battery 50 from the left are electrically connected by the conductor plate 56. In other words, the five storage batteries 50 are electrically connected in series by the four conductor plates 56.

[0032] The first conductor 54 is formed in an S-shape by a metal plate (see FIG. 10). One end (right end) of the first conductor 54 in the longitudinal direction is electrically connected to the negative terminal of the storage battery 50 at the right end. The first conductor 54 has a first contact 57 at the other end (left end) in the longitudinal direction. The first contact 57 has a rectangular cylindrical frame 570 and a spring body housed in the frame 570. The spring body is joined to the upper end of the frame 570 and is formed integrally with the frame 570 so as to be flexible in the left-right direction within the frame 570. The first conductor 54 is housed in the case body 52 along the upper first side wall 521 and the third side wall 523. The first contact 57 is housed in the upper space of the partition wall 5270 among the two spaces in the terminal holding portion 527.

[0033] The second conductor 55 is formed in an S-shape by a metal plate. One end (right end) of the second conductor 55 in the longitudinal direction is electrically connected to the positive terminal of the storage battery 50 at the left end. The second conductor 55 has a second contact 58 at the other end (left end) of the second conductor 55 in the longitudinal direction. The second contact 58 has a rectangular cylindrical frame and a spring body housed in the frame. The spring body is connected to the upper end of the frame and is formed integrally with the frame so as to be flexible in the left-right direction within the frame. The second conductor 55 is housed in the case body 52 along the first side wall 521 and the third side wall 523 on the lower side. The second contact 58 is housed in the space below the partition wall 5270 among the two spaces in the terminal holding portion 527.

[0034] The case 51 is assembled by joining the case cover 53 to the case body 52 (see FIG. 8). The four protruding pieces 5210 of the case body 52 are inserted into the corresponding through holes 5320 among the four through holes 5320 of the case cover 53. Furthermore, the protruding piece 5330 of the case cover 53 is inserted into the through hole 5240 provided in the protruding portion 524 of the case body 52. ​​Then, the claws 5211 and 5331 provided at the tips of the protruding pieces 5210 and 5330 are hooked onto the edges of the through holes 5320 and 5240, respectively, thereby joining the case body 52 and the case cover 53. The opening on the lower side of the terminal holding portion 527 of the case body 52 is closed by covering it with the lid portion 535 of the case cover 53 (see FIG. 8).

[0035] As shown in Fig. 9, the control device 6 includes a first circuit block 60, a second circuit block 61, a housing 62, and a heat sink 63. The first circuit block 60 includes a rectangular first printed wiring board 600, a plurality of types of electronic components 601, a receiving connector 64, an input terminal block 603, an output connector 602, and a first connector 604. Among the plurality of types of electronic components 601, electronic components 601 with leads are inserted and mounted on the lower surface (component surface) of the first printed wiring board 600. Among the plurality of types of electronic components 601, surface-mount electronic components 601 are surface-mounted on the upper surface (solder surface) of the first printed wiring board 600 (see Fig. 7). However, the receiving connector 64, the input terminal block 603, the output connector 602, and the first connector 604 are also inserted and mounted on the component surface of the first printed wiring board 600.

[0036] The output connector 602 has a pair of contacts 6020 (see FIG. 9). Each contact 6020 of the output connector 602 comes into contact with a corresponding one of the pair of terminal boards 42 of the emergency light source unit 4, and is electrically connected thereto.

[0037] The receiving connector 64 has a first contact receiver 641, a second contact receiver 642, and a base 640 (see FIG. 9). The base 640 is formed in a rectangular plate shape from a synthetic resin material having electrical insulation. The first contact receiver 641 and the second contact receiver 642 are formed in a rod shape and are supported by the base 640 while penetrating the base 640 in the thickness direction. When the first contact receiver 641 is inserted into the frame body 570 of the first contact 57 of the emergency power supply unit 5, the first contact receiver 641 is pressed against the frame body 570 by a spring body in the frame body 570, thereby being electrically connected to the first contact 57. When the second contact receiver 642 is inserted into the frame body of the second contact 58 of the emergency power supply unit 5, the second contact receiver 642 is pressed against the frame body by a spring body in the frame body, thereby being electrically connected to the second contact 58.

[0038] The first circuit block 60 has a printed circuit formed of printed wiring formed on the first printed wiring board 600 and a plurality of types of electronic components 601 mounted on the component side and the solder side of the first printed wiring board 600 (see Figs. 7 and 9). The printed circuit of the first circuit block 60 includes, for example, a DC power supply circuit, a charging circuit, a lighting circuit, a power failure detection circuit, and a control circuit. The DC power supply circuit is formed of, for example, a self-excited switching power supply circuit such as a ringing choke converter, and is configured to convert an AC voltage input from a normal power supply to an input terminal block 603 into a DC voltage. The charging circuit is configured to output a constant charging current through the receiving connector 64 when power is supplied from the normal power supply. The lighting circuit is configured to make the DC current input from the emergency power supply unit 5 to the receiving connector 64 constant current, and to supply the constant current DC current to the emergency light source unit 4 through the output connector 602. The power failure detection circuit is configured to detect a power failure of the normal power supply based on the output voltage of the DC power supply circuit and notify the control circuit. The control circuit is configured to operate the charging circuit and stop the lighting circuit when the power failure detection circuit does not detect a power failure of the utility power supply, and is configured to stop the charging circuit and operate the lighting circuit when the power failure detection circuit detects a power failure of the utility power supply.

[0039] The second circuit block 61 has a rectangular second printed wiring board 610, two push button switches 611 and 612, a display element 613, a light receiving element 614, and a second connector 615 (see FIG. 9). The second connector 615 is mounted on one end (front end) of the lower surface of the second printed wiring board 610 in the longitudinal direction. One push button switch 611 is mounted on the lower surface of the second printed wiring board 610 behind the second connector 615. The other push button switch 612 is mounted on the lower surface of the second printed wiring board 610 at the other end (rear end) of the longitudinal direction. The display element 613 has, for example, an LED chip that emits green light. The display element 613 is mounted on the lower surface of the second printed wiring board 610 in front of the push button switch 612. The light receiving element 614 is configured to receive a control signal using infrared rays as a communication medium and demodulate a transmission frame from the received control signal. This control signal is transmitted from a remote controller operated by an operator performing periodic inspection. The light receiving element 614 is mounted between the display element 613 and the push button switch 611 on the lower surface of the second printed wiring board 610. The second connector 615 is electrically connected to the first connector 604 of the first circuit block 60 by, for example, a cable. The control circuit of the first circuit block 60 is configured to monitor the operation states (on and off) of the push button switches 611 and 612 through the cable. The control circuit is also configured to receive, through the cable, a transmission frame of the control signal demodulated by the light receiving element 614. Furthermore, the control circuit is configured to cause the display element 613 to emit light by passing a current through the cable when the charging circuit of the first circuit block 60 is operating.

[0040] The control circuit is configured to perform a periodic inspection operation when one of the pushbutton switches 611 is turned on and when a transmission frame is received from the light receiving element 614. The control circuit performing the periodic inspection operation stops the charging circuit and operates the lighting circuit. Furthermore, the control circuit is configured to perform a self-inspection operation when the other pushbutton switch 612 is turned on. The control circuit performing the self-inspection operation stops the charging circuit and operates the lighting circuit for several seconds, and then stops the lighting circuit again and operates the charging circuit. However, it is preferable that the control circuit is also configured to perform the self-inspection operation when a transmission frame instructing the control circuit to perform the self-inspection operation is received from the light receiving element 614.

[0041] The housing 62 has a first housing 620 and a second housing 621. The first housing 620 has a bottom 6200 and a side wall 6201. The bottom 6200 is formed in a roughly rectangular box shape. The bottom 6200 is configured to support the solder surface of the first printed wiring board 600 of the first circuit block 60 from the thickness direction (up and down direction). The side wall 6201 is formed in a plate shape. The side wall 6201 is connected to the bottom 6200 via a hinge. Therefore, the side wall 6201 is configured to be rotatable with respect to the bottom 6200 about the hinge as an axis. In addition, the side wall 6201 is configured to sandwich and support an end (left end) along the longitudinal direction of the second printed wiring board 610 of the second circuit block 61 from the thickness direction.

[0042] Second housing 621 is formed in a box shape with an open top and left side. Second housing 621 is coupled to first housing 620. The top of second housing 621 is closed by bottom 6200 of first housing 620. In addition, the left side of second housing 621 is closed by side wall 6201 of first housing 620 (see FIG. 7).

[0043] The second housing 621 has a protruding portion 6210 that protrudes downward from the left end of the lower surface (see FIG. 9). The protruding portion 6210 is formed in an approximately pyramidal shape. The protruding portion 6210 has two operation members (a first operation member 6214 and a second operation member 6215). The first operation member 6214 is provided at the front end of the lower surface of the protruding portion 6210. The second operation member 6215 is provided at the rear end of the lower surface of the protruding portion 6210. The first operation member 6214 and the second operation member 6215 are configured to be movable in the up and down direction relative to the lower surface of the protruding portion 6210. In other words, the first operation member 6214 pushed upward presses the push button of the push button switch 611, and the push button switch 611 is turned on. Furthermore, the second operating member 6215, which is pushed upward, presses the push button of the push button switch 612, thereby turning on the push button switch 612. Furthermore, the support base 6210 has two circular windows 6216, 6217 between the first operating member 6214 and the second operating member 6215 on its underside. The front window 6216 faces the light receiving element 614 of the second circuit block 61 in the vertical direction. The rear window 6217 faces the display element 613 of the second circuit block 61 in the vertical direction. That is, the control signal transmitted from the remote controller reaches the light receiving element 614 through the front window 6216. Furthermore, the light (green light) emitted by the display element 613 is radiated to the outside of the housing 62 through the rear window 6217.

[0044] The second housing 621 also has three openings 6211, 6212, and 6213 at the right end. These three openings 6211, 6212, and 6213 are aligned in a row in the front-rear direction (see FIG. 9). The opening 6211 at the front end faces the receiving connector 64 of the first circuit block 60. The opening 6213 at the rear end is through which the input terminal block 603 is inserted. The opening 6212 at the center faces the output connector 602 (see FIG. 8).

[0045] The heat sink 63 has an attachment portion 630 to which the emergency light source unit 4 is attached, a pair of legs 631, and a pair of fixing portions 632 (see FIG. 9). The attachment portion 630 is formed in an approximately trapezoidal shape. The pair of legs 631 are formed in a flat plate shape and protrude upward from the front and rear ends of the attachment portion 630. The pair of fixing portions 632 protrude from the upper ends of the pair of legs 631 in the front-rear direction in a direction approaching each other. However, it is preferable that the attachment portion 630, the pair of legs 631, and the pair of fixing portions 632 are integrally formed from a plate material made of aluminum or an aluminum alloy.

[0046] 8, the heat sink 63 is attached to the housing 62 by arranging the attachment portion 630 facing the lower surface of the second housing 621, arranging the pair of legs 631 facing the front and rear surfaces of the second housing 621, and hooking the pair of fixing portions 632 onto the upper surface of the bottom portion 6200 of the first housing 620. The heat sink 63 is positioned with respect to the housing 62 by fitting protrusions 6218 protruding from the upper ends of the upper and lower surfaces of the second housing 621 into rectangular fitting holes 633 provided in the pair of legs 631, respectively (see FIGS. 8 and 9).

[0047] The emergency light source unit 4 is attached to the attachment portion 630 by screwing the holder 41 with two attachment screws 45 into screw holes 6300 provided in the attachment portion 630 of the heat sink 63 (see Figs. 6 to 9). The emergency light source unit 4 is electrically connected to the first circuit block 60 of the control device 6 by inserting the terminal board holding portion 410 of the holder 41 into the output connector 602 exposed from the central opening 6212 of the second housing 621 (see Fig. 7). Furthermore, the LED module 40 is thermally coupled to the attachment portion 630 of the heat sink 63 via the heat sink sheet 43 (see Fig. 7).

[0048] The control device 6 is accommodated at the left end inside the fixture body 10 (see FIG. 11). The control device 6 is preferably fixed to the fixture body 10 by screwing a pair of fixing portions 632 of the heat sink 63 to the top plate 11. Therefore, the heat generated by the LED module 40 is conducted from the heat sink sheet 43 to the heat sink 63, and further conducted from the heat sink 63 to the fixture body 10 and dissipated.

[0049] 6, the presser 8 has a main piece 80, a hook piece 81, a side piece 82, a first insertion piece 83, a second insertion piece 84, and a third insertion piece 85. It is preferable that the main piece 80, the hook piece 81, the side piece 82, the first insertion piece 83, the second insertion piece 84, and the third insertion piece 85 are integrally formed from a metal plate.

[0050] The main piece 80 is formed in an L-shape when viewed from below. The main piece 80 has a female thread portion 800. The hook piece 81 has a curved portion 810 curved in an arc shape, a connecting portion 811 connecting the curved portion 810 and the main piece 80, and a rectangular flat portion 812 protruding from the lower end of the curved portion 810 (see Figs. 4A to 4C and 6). The hook piece 81 is connected to the lower part of the left end of the main piece 80 by the connecting portion 811. The hook piece 81 is configured so that the curved portion 810 can be displaced in the left and right directions by the connecting portion 811 bending in the thickness direction. The side piece 82 is formed in a rectangular shape. The side piece 82 protrudes downward and leftward from the rear end of the main piece 80. The lower part of the side piece 82 is inclined toward the rear. The first insertion piece 83 and the second insertion piece 84 are formed in an L-shape when viewed from the front-rear direction (see Figs. 4B and 5B). It is preferable that the second insertion piece 84 is formed by cutting and raising the main piece 80. The third insertion piece 85 is formed in an L-shape when viewed from the front-rear direction (see Figs. 4B and 5B). The third insertion piece 85 protrudes upward from the upper end of the left end of the side piece 82 (see Fig. 4B).

[0051] The retainer 8 is configured such that the first insertion piece 83, the second insertion piece 84, and the third insertion piece 85 are inserted in one-to-one correspondence into three holes penetrating the top plate 11, and the first insertion piece 83, the second insertion piece 84, and the third insertion piece 85 each sandwich the top plate 11. The retainer 8 is attached to the underside of the top plate 11 by screwing a screw inserted into a screw insertion hole provided in the top plate 11 into the female threaded portion 800 of the main piece 80 (see FIG. 11).

[0052] The emergency power supply unit 5 is disposed between the control device 6 and the clamp 8 attached to the top plate 11 of the device body 10 (see FIG. 11). The emergency power supply unit 5 is accommodated in the space between the control device 6 and the clamp 8 in the device body 10 with the case body 52 facing the top plate 11. The terminal holder 527 of the emergency power supply unit 5 is inserted into the housing 62 through the opening 6211 at the front end of the second housing 621. At this time, the guide piece 5271 of the terminal holder 527 is guided by the guide groove 6219 provided at the right end of the front surface of the second housing 621 (see FIG. 6). Then, the first contact 57 of the emergency power supply unit 5 is electrically connected to the first contact receptacle 641 of the control device 6. Also, the second contact 58 of the emergency power supply unit 5 is electrically connected to the second contact receptacle 642 of the control device 6. Furthermore, the emergency power supply unit 5 is supported by the holding tool 8 by the curved portion 810 of the hook piece 81 of the holding tool 8 being hooked on the protrusion 524 provided on the case 51 (see FIG. 4A and FIG. 8). Here, when the connecting portion 811 of the hook piece 81 is bent by the force applied to the flat portion 812, the curved portion 810 is displaced rightward and the hooking between the curved portion 810 and the protrusion 524 is released. Then, when the emergency power supply unit 5 is pulled downward in a state in which the hooking between the curved portion 810 and the protrusion 524 is released, the first contact 57 and the second contact 58 are pulled out from the first contact receiver 641 and the second contact receiver 642. That is, the worker can complete the electrical connection between the emergency power supply unit 5 and the control device 6 almost at the same time as the work of storing the emergency power supply unit 5 in the equipment body 10. Furthermore, the worker can complete the electrical disconnection work between the emergency power supply unit 5 and the control device 6 almost simultaneously with the work of removing the emergency power supply unit 5 from the equipment body 10.

[0053] As shown in FIG. 3, the cover 7 includes a first cover 71 and a second cover 72. The first cover 71 and the second cover 72 are connected to each other so as to be aligned in the left-right direction by a long connecting body 73 formed in an L-shape when viewed from the front-rear direction. The first cover 71, the second cover 72, and the connecting body 73 are preferably integrally formed of a non-combustible material such as metal. For example, the cover 7 is preferably made of aluminum die-casting. However, the cover 7 may be made of a non-combustible material other than metal, such as ceramics. If the cover 7 is made of a non-combustible material, it is possible to prevent the cover 7 from burning in the event of a fire. Furthermore, if the first cover 71 and the second cover 72 are integrally formed, it is possible to reduce the number of parts and simplify the assembly work.

[0054] The first cover 71 is formed in a box shape with an open top. The bottom surface of the first cover 71 is formed in a curved shape that protrudes gently downward from both ends toward the center in the short-side direction (front-rear direction) like the light-transmitting cover 20 of the daily lighting device 2 (see Figs. 3 and 6). A recess 710 is formed in the bottom surface of the first cover 71. The recess 710 is formed in an elliptical shape when viewed from below (see Fig. 4A). A hole 711 penetrates the center (bottom) of the recess 710. The hole 711 is formed in a shape (elliptical shape) that allows the lens body 440 of the lens 44 to be inserted therethrough. The recess 710 is formed so that both ends in its long-axis direction (left-right direction) protrude downward more than both ends in its short-axis direction (front-rear direction) (see Fig. 4B).

[0055] The first cover 71 has four through holes (a first through hole 712, a second through hole 713, a third through hole 714, and a fourth through hole 715) at the left end of the lower surface thereof (see FIGS. 4A and 6). The first through hole 712, the second through hole 713, the third through hole 714, and the fourth through hole 715 are arranged in a line from the front to the rear.

[0056] The first cover 71 has two hooks 716 at the left end of the upper surface thereof (see FIG. 5A). The hooks 716 are L-shaped when viewed from the front-rear direction (see FIG. 5B). The hooks 716 are configured to incline upward as they approach the tip (left end) (see FIG. 5B).

[0057] As shown in FIG. 6, the second cover 72 has a flat portion 720, an arm portion 721, and a fixing portion 722. The flat portion 720 is formed in a roughly rectangular plate shape. The flat portion 720 is connected to the connector 73 at its left end. The arm portion 721 is formed in a roughly rectangular plate shape. The arm portion 721 is configured to rise upward from the front end at the right end of the flat portion 720. The fixing portion 722 is formed in a roughly rectangular plate shape. The fixing portion 722 is configured to protrude rightward from the upper end of the arm portion 721. The fixing portion 722 also has a circular screw insertion hole 723 in its right corner near the front.

[0058] As shown in Figs. 4A to 4C, the cover 7 is configured such that the first cover 71 covers the emergency light source unit 4, the control device 6, and a part (left end) of the emergency power supply unit 5 from below, and the second cover 72 covers the entire remaining emergency power supply unit 5 from below. The lens body 440 of the emergency light source unit 4 is inserted through a hole 711 of the first cover 71 and exposed to the outside of the cover 7. The first operating member 6214 faces the first through hole 712 of the first cover 71 (see Fig. 4A). The first operating member 6214 is pushed by a jig inserted through the first through hole 712. The second operating member 6215 is inserted through a fourth through hole 715 of the first cover 71 (see Fig. 5B). The second operating member 6215 is pushed by, for example, a person's finger. The second through hole 713 of the first cover 71 faces the light receiving element 614 of the control device 6 (see Fig. 4A). Furthermore, the third through-hole 714 of the first cover 71 faces the display element 613 of the control device 6 (see FIG. 4A). That is, a control signal transmitted from the remote controller reaches the light receiving element 614 through the second through-hole 713. Furthermore, light (green light) emitted by the display element 613 is radiated to the outside of the cover 7 through the third through-hole 714.

[0059] The cover 7 is fixed to the device body 10 by a pair of hooking portions 716 of the first cover 71 and a fixing portion 722 of the second cover 72. The pair of hooking portions 716 are hooked to a protruding piece 130 protruding rightward from the lower end of the second side plate 13 on the left side of the device body 10 (see FIG. 11). The fixing portion 722 is screwed to the top plate 11 of the device body 10. The screw for screwing the fixing portion 722 is inserted through the screw insertion hole 723 of the fixing portion 722 and the screw insertion hole 801 provided in the main piece 80 of the clamp 8, and then screwed into the female thread provided in the top plate 11 of the device body 10 (see FIG. 11).

[0060] Incidentally, the nickel-metal hydride battery used in the storage battery 50 has a discharge characteristic in which the battery capacity is largest near room temperature and decreases at high temperatures. If the discharge characteristic of the storage battery 50 deteriorates, the illuminance of the emergency lighting of the emergency lighting device 3 may decrease, or the duration of the emergency lighting may be shortened. Therefore, it is preferable to place the emergency power supply unit 5 having the storage battery 50 as far away from the heat source (emergency light source unit 4) as possible.

[0061] Therefore, as shown in Figs. 2A and 2B, the emergency power supply unit 5 is accommodated in the fixture body 10 so as not to overlap with the emergency light source unit 4 when viewed from a predetermined direction (vertical direction). The predetermined direction is a direction perpendicular to the direction (horizontal direction) in which the normal lighting device 2 and the emergency lighting device 3 are arranged, and is a direction (vertical direction) in which the normal lighting device 2 and the emergency lighting device 3 protrude outside the fixture body 10. Therefore, the emergency power supply unit 5 is disposed farther away from the emergency light source unit 4, which is a heat source, compared to the conventional example described in Patent Document 1. As a result, the lighting fixture 1 can suppress the deterioration of the discharge characteristics of the emergency power supply unit 5 by reducing the influence of heat that the emergency power supply unit 5 receives from the emergency light source unit 4.

[0062] Furthermore, the nickel-metal hydride battery used in the storage battery 50 has a charging characteristic in which the charging efficiency decreases as the temperature increases. If the charging efficiency of the storage battery 50 decreases, the illuminance of the emergency lighting of the emergency lighting device 3 may decrease, or the duration of the emergency lighting may be shortened. Therefore, it is preferable that the emergency power supply unit 5 having the storage battery 50 is disposed as far away from the heat source (the regular lighting device 2) as possible. However, if the emergency power supply unit 5 is accommodated at one end of the longitudinal direction of the fixture body 10 and the emergency light source unit 4 is disposed between the emergency power supply unit 5 and the regular lighting device 2, the longitudinal dimension of the fixture body 10 becomes large.

[0063] Therefore, the emergency lighting device 3 has the second cover 72 disposed between the service lighting device 2 and the emergency power supply unit 5 in the vertical direction. That is, the first bottom wall 530 of the case cover 53 of the emergency power supply unit 5 faces the upper surface of the left end of the service lighting device 2 across the second cover 72 (see FIG. 11). Therefore, the emergency lighting device 3 blocks the heat generated by the service lighting device 2 with the second cover 72, and therefore it is possible to prevent the temperature of the emergency power supply unit 5 from excessively increasing due to the heat generated by the service lighting device 2.

[0064] As described above, the lighting fixture 1 includes the normal lighting device 2 for normal lighting, the emergency lighting device 3 for emergency lighting, and the fixture body 10 for housing the normal lighting device 2 and the emergency lighting device 3. The emergency lighting device 3 includes an emergency light source unit 4, an emergency power supply unit 5 having at least one storage battery 50, and a control device 6 for charging the storage battery 50 and turning on the emergency light source unit 4 with the power discharged from the storage battery 50. The emergency lighting device 3 further includes a cover 7 for covering the emergency light source unit 4 and having a hole 711 through which the light emitted from the emergency light source unit 4 passes. The fixture body 10 houses the emergency lighting device 3 next to the normal lighting device 2. The emergency power supply unit 5 is housed in the fixture body 10 so as not to overlap with the emergency light source unit 4 when viewed from a predetermined direction. The predetermined direction is a direction perpendicular to the direction (left-right direction) in which the normal lighting device 2 and the emergency lighting device 3 are arranged, and is also a direction (up-down direction) in which the normal lighting device 2 and the emergency lighting device 3 protrude outside the fixture body 10. The cover 7 has a portion (second cover 72) disposed between the normal lighting device 2 and the emergency lighting device 3.

[0065] When the lighting fixture 1 is configured as described above, the heat generated by the normal lighting device 2 is blocked by a portion (second cover 72) disposed between the normal lighting device 2 and the emergency lighting device 3, so that the emergency lighting device 3 can be disposed close to the normal lighting device 2 while suppressing a temperature rise in the emergency power supply unit 5 caused by the heat generated by the normal lighting device 2. Moreover, since the emergency power supply unit 5 faces the normal lighting device 2 in a predetermined direction (up and down direction) with the second cover 72 in between, it is possible to suppress an increase in size of the fixture body. As a result, the lighting fixture 1 can suppress a decrease in the charging characteristics of the emergency power supply unit 5 while suppressing an increase in size of the fixture body 10.

[0066] In addition, in lighting device 1, second cover 72 is preferably formed integrally with first cover 71.

[0067] When lighting fixture 1 is configured as described above, it is possible to reduce the number of parts and simplify the assembly work, compared to a case in which second cover 72 and first cover 71 are configured separately.

[0068] Furthermore, in the lighting fixture 1, the fixture body 10 is preferably formed in a long box shape. The regular lighting device 2 and the emergency lighting device 3 are preferably housed in the fixture body 10 so as to be aligned along the longitudinal direction of the fixture body 10.

[0069] If the lighting fixture 1 is configured as described above, the width dimension in the short side direction of the fixture body 10 can be made smaller than when the regular lighting device 2 and the emergency lighting device 3 are housed side by side along the short side direction of the fixture body 10.

[0070] In the lighting device 1, the first cover 71 and the second cover 72 are preferably made of a non-flammable material such as metal.

[0071] When the lighting fixture 1 is configured as described above, it is possible to prevent the first cover 71 and the second cover 72 from burning in the event of a fire.

[0072] In the lighting fixture 1, the control device 6 is preferably housed in the fixture body 10 so as to overlap with the emergency light source unit 4 when viewed from a predetermined direction (vertical direction).

[0073] If the lighting fixture 1 is configured as described above, the emergency lighting device 3 can be made smaller in the left-right direction compared to when the control device 6 is housed in the fixture body 10 side-by-side with the emergency light source unit 4. [Explanation of symbols]

[0074] 1 Lighting equipment 2 Regular lighting equipment 3 Emergency lighting system 4 Emergency light source unit 5 Emergency power supply unit 6. Control device 7 Cover 10. Equipment body 50 Battery 71 First Cover 72 2nd Cover

Claims

1. A lighting device for normal use that provides normal lighting, a lighting device for emergency use that provides emergency lighting, and a lighting fixture body that supports the lighting device for normal use and the emergency lighting device, The emergency lighting device includes an emergency light source unit, an emergency power supply unit having at least one storage battery, a control device that charges the storage battery and lights up the emergency light source unit with power discharged from the storage battery, and a cover that has a hole through which light emitted from the emergency light source unit passes and covers the emergency light source unit and the emergency power supply unit, The fixture body supports the emergency lighting device next to the normal lighting device, The emergency power supply unit is supported by the fixture body so as not to overlap with the emergency light source unit when viewed from a predetermined direction, The predetermined direction is a direction perpendicular to a direction in which the normal lighting device and the emergency lighting device are arranged, and is a direction in which the normal lighting device and the emergency lighting device protrude outside the device body, The control device is supported by the device body so as to overlap with the emergency light source unit when viewed from the predetermined direction, The lighting fixture according to claim 1, wherein the cover has a portion disposed between the normal lighting device and the emergency lighting device.

2. The instrument body is formed in a long box shape, 2. The lighting fixture according to claim 1, wherein the regular lighting device and the emergency lighting device are supported by the fixture body so as to be aligned along a longitudinal direction of the fixture body.

3. 3. The lighting device according to claim 1, wherein the cover is made of a non-combustible material such as metal.

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