Lighting device

Abstract

To provide a lighting device that improves the ease of attaching the light source unit to the fixture body. [Solution] The fixture body 11 has a light source placement section 18, a wiring area section 20 provided on the side of the light source placement section 18, and a wire insertion hole 36 that connects the light source placement section 18 and the wiring area section 20. The wiring units 16 and 17 have a connector 85, a power supply wire 83, and a non-power supply wire 84. The connector 85 is placed in the wiring area section 20. The middle part of the power supply wire 83 is inserted into the wire insertion hole 36, one end is connected to the connector 85, and the other end is connected to the light source unit 13. The non-power supply wire 84 is shorter in length than the power supply wire 83. The non-power supply wire 84 has its middle section inserted through the wire insertion hole 36, one end is connected to the connector 85, and the other end is connected to the light source unit 13 at a position closer to the wire insertion hole 36 than the position where the power supply wire 83 of the light source unit 13 is connected.

Description

Technical Field

[0001] Embodiments of the present invention relate to lighting devices.

Background Art

[0002] Conventionally, there is a lighting device in which a light source unit is detachably attached to an appliance body. In this lighting device, when attaching the light source unit to the appliance body, the appliance body side and the light source unit side are electrically connected by a power supply wire, and a fall prevention member such as a wire or a string is connected between the appliance body side and the light source unit side to prevent the light source unit from falling. Thus, in this lighting device, when attaching the light source unit to the appliance body, a two-step work procedure of connecting the power supply wire and connecting the fall prevention member is required.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The problem to be solved by the present invention is to provide a lighting device capable of improving the workability of attaching a light source unit to an appliance body.

Means for Solving the Problems

[0005] The lighting device of this embodiment comprises a fixture body, a light source unit, and a wiring unit. The fixture body has a light source placement section, a wiring area provided on the side of the light source placement section, and a wire insertion hole connecting the light source placement section and the wiring area section. The light source unit is placed in the light source placement section. The wiring unit has a connector, a power supply wire, and a non-power supply wire. The connector is placed in the wiring area section. The power supply wire has its middle section inserted into the wire insertion hole, one end connected to the connector, and the other end connected to the light source unit. The non-power supply wire is shorter in length than the power supply wire. The non-power supply wire has its middle section inserted into the wire insertion hole, one end connected to the connector, and the other end connected to the light source unit at a position closer to the wire insertion hole than where the power supply wire of the light source unit is connected. [Effects of the Invention]

[0006] According to this embodiment, improved workability can be expected when attaching the light source unit to the fixture body. [Brief explanation of the drawing]

[0007] [Figure 1] This is a schematic bottom view of a lighting device showing one embodiment. [Figure 2] This is a perspective view of the same lighting device. [Figure 3] This is a perspective view of the same lighting device with the light source unit removed. [Figure 4] This is a disassembled perspective view of the same lighting device with the light source unit removed. [Figure 5] This is a cross-sectional view of the same lighting device. [Figure 6] This is a cross-sectional view showing the installation process of the light source unit of the same lighting device. [Figure 7] This is an exploded perspective view of the same light source unit. [Figure 8] This is an exploded perspective view of a portion of the same light source unit. [Figure 9] This is a perspective view of a part of the same light source unit. [Figure 10] This is a perspective view showing the wiring unit of the same lighting device. [Modes for carrying out the invention]

[0008] One embodiment will be described below with reference to Figure 1.

[0009] Figure 1 shows a schematic bottom view of the lighting device 10. The lighting device 10 comprises a fixture body 11, light source units 12 and 13 attached to the fixture body 11, a terminal block 14 attached to the fixture body 11, a power supply unit 15 attached to one (first) light source unit 12 and supplying lighting power to the light source units 12 and 13, and wiring units 16 and 17 that connect the power supply unit 15 to the other (second) light source unit 13 and have a function to prevent the light source units 12 and 13 from falling off the fixture body 11. In the lighting device 10, the direction in which the light source units 12 and 13 are aligned is called the first direction x, and the direction intersecting this first direction x is called the second direction y.

[0010] The fixture body 11 has a light source arrangement section 18 on both sides in the first direction x where light source units 12 and 13 are arranged, a housing section 19 is formed between the light source arrangement sections 18, and wiring area sections 20 are formed at both ends of the housing section 19 in the second direction y.

[0011] The terminal block 14 is located on the side panel of the fixture body 11 in one of the wiring area sections 20, and power lines supplying AC power, which is external power, are connected to it. The connecting wire 21 connected to the terminal block 14 and the input wire 22 connected to the input side of the power supply unit 15 are connected by a connector 23.

[0012] As shown in Figures 2 to 4, the lighting device 10 has a rectangular shape when viewed from below and is attached to, for example, a T-bar of a system ceiling and embedded in the ceiling surface.

[0013] The main body of the device 11 is made of metal, for example, and comprises a pair of frame bodies 26 arranged at a distance from each other in a first direction x, and a pair of side plates 27 connecting the ends of the pair of frame bodies 26 in a second direction y.

[0014] The pair of frames 26 includes a top plate portion 28 that is long in the second direction y, and side plate portions 29 on both sides in the short side direction, which is the first direction x of the top plate portion 28. The cross-sectional shape in the short side direction is formed in a substantially U-shape that opens downward. An air vent 30 for air conditioning is formed in the top plate portion 28. Further, the side plate 27 is connected to both ends in the longitudinal direction, which is the second direction y, of the pair of frames 26. An upper plate portion 31 that protrudes between the upper surfaces of the pair of frames 26 is provided on the side plate 27. And a light source arrangement portion 18 that opens downward is formed inside each frame 26, a housing portion 19 is formed between the pair of frames 26, and a wiring region portion 20 is formed below the upper plate portion 31 of the side plate 27 at both ends in the second direction y of the housing portion 19. The housing portion 19 has openings on the lower and upper surfaces, and the lower surface is covered with a cover. Other equipment such as a speaker can be housed in the housing portion 19.

[0015] Mounting bases 32 for attaching the light source units 12, 13 are attached to both ends in the longitudinal direction of the light source arrangement portion 18. The mounting base 32 is made of metal and is a magnetic body, and has a flat lower surface portion 33 and side surface portions 34 that are legs rising from both sides of the lower surface portion 33. The upper side of the side surface portion 34 is attached to the lower surface of the top plate portion 28. The mounting base 32 protrudes downward from the center in the short side direction of the top plate portion 28.

[0016] When renewing the existing lighting device already installed on the ceiling to form the lighting device 10, the fixture body 11 of the existing lighting device is used as it is, but other parts such as the existing reflector, socket, lamp, and ballast are removed, and new light source units 12, 13, etc. are arranged in the fixture body 11. In this case, the socket base plate 35 attached to the fixture body 11 of the existing lighting device is used as the mounting base 32. In the existing lighting device, sockets are attached to the socket bases 35 arranged at both ends in the longitudinal direction of the light source arrangement portion 18 of the fixture body 11, a reflector is arranged in the light source arrangement portion 18 so that the socket protrudes downward, and a straight tube-shaped lamp is connected between the sockets at both ends below the reflector. Note that in the existing lighting device, there may be cases where there is no reflector.

[0017] On the side plate portion 29 of the frame body 26 between the light source arrangement portion 18 and the accommodation portion 19, a wire insertion hole 36 that communicates the light source arrangement portion 18 and the wiring area portion 20 of the accommodation portion 19 is provided. The wire insertion hole 36 is provided in the lower region of the upper plate portion 31 of the side plate 27 on the upper side at both ends in the longitudinal direction of the side plate portion 29, and enables insertion of the wiring units 16, 17, the input wire 22, and the like.

[0018] Also, as shown in FIGS. 2 to 8, the light source units 12, 13 are formed in a long shape and are detachably arranged in the light source arrangement portion 18 of the fixture main body 11. The dimension in the longitudinal direction (second direction y) of the light source units 12, 13 is slightly smaller than the dimension in the longitudinal direction of the light source arrangement portion 18 in order to be detachably attached to the light source arrangement portion 18, and the position in the longitudinal direction is regulated. However, the dimension in the short direction (first direction x) of the light source units 12, 13 is smaller than the dimension in the short direction of the light source arrangement portion 18, and the position in the short direction is not regulated.

[0019] The light source units 12, 13 commonly include a mounting member 40, a light source portion 41 attached to the lower surface side, which is one surface side of the mounting member 40, and guide members 42 and magnet portions 43 attached to both end sides in the longitudinal direction on the upper surface side, which is the other surface side of the mounting member 40. Only in one of the light source units 12, a power supply portion 15 is attached to the upper surface side of the mounting member 40.

[0020] The mounting member 40 also functions as a reflector that reflects light from the light source 41 downward. The mounting member 40 has a long upper surface portion 45, side portions 46 that are bent downward from both sides in the short direction of the upper surface portion 45, and reflective surface portions 47 that extend outward in opposite directions from the lower ends of the side portions 46 on both sides. An opening 48 is formed in the central area of ​​the upper surface portion 45, and connecting holes 49 are formed near the opening 48 at both ends in the longitudinal direction of the upper surface portion 45, and a slit-shaped groove portion 50 is provided on the end side of the upper surface portion 45 beyond the connecting holes 49. Mounting holes 51 for attaching the light source 41 are provided at both ends in the longitudinal direction of the side portions 46 on both sides. The mounting hole 51 is provided with a detachable hole 52 that opens from the side portion 46 to a part of the reflective surface portion 47 on one end of the side portion 46 in the longitudinal direction, and a slit-shaped mounting hole 53 that runs along the longitudinal direction of the side portion 46 at a position above the lower end of the side portion 46, with the upper side of the detachable hole 52 and the mounting hole 53 in communication.

[0021] The light source unit 41 comprises a long chassis 55, a light source module (not shown) located on the underside of the chassis 55, a light-transmitting cover 56 that covers the light source module and is attached to the chassis 55, and mounting fixtures 57 attached to both ends of the chassis 55 in the longitudinal direction.

[0022] The chassis 55 is made of metal and has a flat base 58 and edges 59 that rise on both sides in the width direction. The upper ends of the edges 59 are bent outward in the width direction and protrude.

[0023] The light source module has multiple light-emitting elements mounted on a long circuit board. The light source side wire 60 (see Figures 1 and 10) connected to the light source module is routed from one end of the chassis 55 to the top side.

[0024] The cover 56 has light-transmitting and light-diffusing properties. The cover 56 comprises a cover body 61 and end face cover portions 62 that are attached to cover both longitudinal ends of the cover body 61. On both sides of the cover body 61 in the short direction, there are fitting portions 61a that are fitted and attached to the outside and top of the edge portions 59 of the chassis 55. When the light source unit 41 is attached to the mounting member 40, the fitting portions 61a on both sides fit between the side portions 46 on both sides of the mounting member 40, and the positions of the mounting member 40 and the light source unit 41 in the short direction are positioned.

[0025] The mounting fixture 57 is made of metal, for example, and has mounting portions 63 on both sides that are attached to the edges 59 on both sides of the chassis 55. Each mounting portion 63 is provided with a connecting portion 64 that protrudes outward in the short direction of the chassis 55. The connecting portion 64 is formed to be wide along the longitudinal direction of the chassis 55 and is formed so that its tip is inclined downward. The connecting portion 64 is movable vertically relative to the attachment / detachment hole 52 of the mounting member 40, and the light source unit 41 is attached to the mounting member 40 by sliding from the attachment / detachment hole 52 to the mounting hole 53.

[0026] The guide members 42 are attached to the mounting member 40 at both ends in the longitudinal direction, in positions corresponding to the mounting base 32 of the light source arrangement section 18 where the light source units 12 and 13 are placed, by welding, screwing, or the like. The guide members 42 are attached to both ends in the longitudinal direction of the upper surface portion 45 of the mounting member 40, on the end side of the connecting holes 49 and grooves 50.

[0027] The guide member 42 is made of metal, for example, and has a mounting plate portion 66 that is positioned and mounted on the upper surface portion 45 of the mounting member 40, guide portions 67 that rise from both sides of the mounting plate portion 66 corresponding to the short side of the mounting member 40, and partition wall portions 68 that rise from the edge of the mounting plate portion 66 facing the opening 48 side in the central area of ​​the mounting member 40.

[0028] The guide portions 67 on both sides have introduction portions 69 that are inclined or curved to expand outwards from each other on their upper ends. The distance between the guide portions 67 on both sides below the introduction portions 69 is approximately the same as the distance between the outer surfaces of the side portions 34 on both sides of the mounting base 32 (socket base 35), and the distance between at least the upper parts of the introduction portions 69 on both sides is wider than the distance between the outer surfaces of the side portions 34 on both sides of the mounting base 32.

[0029] The partition wall 68 is provided across the entire width of the mounting plate 66. The distance between the partition wall 68 of the pair of guide members 42 attached to both ends of the mounting member 40 is smaller than the distance between the pair of mounting bases 32 located at both ends of the light source arrangement section 18.

[0030] The magnet section 43 is attached to both ends of the mounting member 40 in the longitudinal direction, at positions corresponding to the mounting base 32 of the light source arrangement section 18 where the light source units 12 and 13 are arranged. The magnet section 43 has a magnet 71 that generates magnetic force and a holding section 72 which is a magnetic material that holds the magnet 71. Two magnet sections 43 are used and are arranged side by side in the longitudinal direction of the mounting member 40. The magnet section 43 is placed on the upper surface of the mounting plate section 66 of the guide member 42 and is attached to the upper surface section 45 of the mounting member 40 together with the guide member 42 by multiple screws.

[0031] Furthermore, the power supply unit 15 converts AC power into a predetermined illuminating power, which is DC power, and outputs it. As shown in Figure 1, an input wire 22 for receiving AC power from an external source is connected to the input side of the power supply unit 15, and a power supply wire (not shown) that supplies illuminating power to one light source unit 12 on which the power supply unit 15 is located, and a power supply wire for a wiring unit 16 that supplies illuminating power to the other light source unit 13 are connected to the illuminating power output side of the power supply unit 15.

[0032] As shown in Figures 7 to 9, the power supply unit 15 is attached to the mounting member 40 of one of the light source units 12 by a support member 75. The support member 75 has a long support portion 76 on its lower surface to which the power supply unit 15 is attached, and leg portions 77 that are bent downward from both ends in the longitudinal direction of the support portion 76. The tip of the leg portion 77 has a fixing portion 78 that is positioned on the upper surface portion 45 of the mounting member 40, and a projection portion 79 that is bent downward from the tip of the fixing portion 78 and inserted into the groove portion 50 of the upper surface portion 45. The fixing portion 78 is provided with an insertion hole 80 coaxial with the connecting hole 49 of the upper surface portion 45. The support member 75 is attached to the mounting member 40 by screwing a screw that passes through the insertion hole 80 into the connecting hole 49, and a part of the power supply unit 15 supported by the support member 75 is positioned in the opening 48 of the mounting member 40.

[0033] Furthermore, as shown in Figures 1 and 10, the wiring units 16 and 17 each have two power supply wires 83, one non-power supply wire 84, a connector 85 to which one end of the power supply wires 83 and the non-power supply power source 84 are connected and linked, and a cylindrical tube 86 through which the intermediate portions of the power supply wires 83 and the non-power supply power source 84 are inserted together to form a single unit.

[0034] The power supply wire 83 is made of insulated wire. The non-power supply wire 84 is made of wire, string, or insulated wire. A fixing member 87, such as a crimp terminal, is fixed to the other end of the non-power supply wire 84, and this fixing member 87 is fixed to the mounting member 40 by a screw that is screwed into the connecting hole 49 of the mounting member 40.

[0035] As shown in Figure 1, one wiring unit 16, to which a non-power supply wire 84 is fixed to one light source unit 12, has the other ends of two power supply wires 83 connected to the output side (terminal block) of the power supply unit 15. One end of two other power supply wires is connected to the output side (terminal block) of the power supply unit 15, and the other end of these power supply wires is connected by a connector to a light source side wire 60 (not shown in Figure 1) drawn out from the light source section 41 of one light source unit 12.

[0036] As shown in Figures 1 and 10, the other wiring unit 17, to which the non-power supply wire 84 is fixed to the other light source unit 13, is connected to the other end of the two power supply wires 83 via a connector 88 to the light source side wire 60 which is drawn out from the light source unit 41.

[0037] The wiring units 16 and 17 have one end with a connector 85 inserted from the light source placement section 18 of the fixture body 11 through the wire insertion hole 36 into the wiring area section 20 of the housing section 19. The middle tube 86 portion of the wiring units 16 and 17 is inserted into the wire insertion hole 36, with one end with the connector 85 positioned in the wiring area section 20, and the other end connected to the light source units 12 and 13 of the light source placement section 18 positioned in the light source placement section 18. The connector 85 of one wiring unit 16 and the connector 85 of the other wiring unit 17 are connected to each other in the wiring area section 20, electrically connecting the power supply wires 83 and mechanically connecting the non-power supply wires 84. The connector 85 of one wiring unit 16 and the connector 85 of the other wiring unit 17 have a locking structure that locks them in a connected state, and they can be separated by releasing the locking of this locking structure.

[0038] The length of the non-power supply wire 84 is shorter than that of the power supply wire 83, and the connection position to which the other end of the non-power supply wire 84 is connected is closer to the end than the position to which the power supply wire 83 is connected to the light source units 12 and 13 (the connection position with the connector 88 located on the opening 48 side of the mounting member 40), and is close to the wire insertion hole 36 when the light source units 12 and 13 are placed in the light source arrangement section 18 of the fixture body 11.

[0039] Next, we will explain a method for renovating existing lighting fixtures already installed on the ceiling to create a new lighting fixture 10.

[0040] In existing lighting fixtures, sockets are attached to socket bases 35 located at both ends in the longitudinal direction of the light source arrangement section 18 of the fixture body 11, a reflector is placed inside the light source arrangement section 18 so that the sockets protrude downward, and a straight-tube lamp is connected between the sockets at both ends on the underside of the reflector.

[0041] First, remove the lamp from between the pair of sockets, remove the reflector from the light source placement section 18 of the fixture body 11, and remove the pair of sockets from the pair of socket bases 35. If a reflector is not provided, the step of removing the reflector is omitted. The ballast may also be removed, or if it does not interfere with the placement of the new light source units 12 and 13, it may be left in place on the fixture body 11 with the electrical connection between the terminal block 14 and the ballast disconnected.

[0042] The light source units 12 and 13 are pre-assembled, and the power supply wires 83 of the wiring units 16 and 17 are electrically connected to the light source units 12 and 13, while the non-power supply wires 84 are fixed to them.

[0043] Light source units 12 and 13 are placed in the respective light source placement sections 18 of the fixture body 11. At this time, as shown in Figure 10, one end of the wiring units 16 and 17 having a connector 85 is inserted from the light source placement section 18 of the fixture body 11 through the wire insertion hole 36 into the wiring area section 20 of the housing section 19. As shown in Figure 1, the input wire 22 connected to the input side of the power supply section 15 of one of the light source units 12 is connected to the connecting wire 21 connected to the terminal block 14 by the connector 23.

[0044] After the electrical connection is complete, the light source units 12 and 13 are pushed up into the light source placement section 18 in a horizontal position, as shown in Figure 6. At this time, the longitudinal dimension (second direction y) of the light source units 12 and 13 is slightly smaller than the longitudinal dimension of the light source placement section 18, so the longitudinal position of the light source units 12 and 13 is restricted by the light source placement section 18, and the positions of the guide members 42 and magnet parts 43 at both ends of the light source units 12 and 13 and the mounting bases 32 at both ends of the light source placement section 18 are positioned.

[0045] Since the dimensions of the light source units 12 and 13 in the short direction (first direction x) are smaller than the dimensions of the light source placement section 18 in the short direction, the positions of the light source units 12 and 13 in the short direction are not restricted by the light source placement section 18. However, as the light source units 12 and 13 are pushed up onto the light source placement section 18, the guide portions 67 on both sides of the guide member 42 engage with both sides of the mounting base 32 via the opening introduction portions 69, thereby positioning the guide member 42 and magnet portion 43 and the mounting base 32 in the short direction of the light source units 12 and 13.

[0046] As shown in Figure 5, when the light source units 12 and 13 are pushed up with the guide portions 67 on both sides of the guide member 42 engaged with both sides of the mounting base 32 and positioned, the magnet portion 43 comes into contact with the lower surface portion 33 of the mounting base 32 and is held in place by magnetic force. As a result, both longitudinal ends of the light source units 12 and 13 are attached to the fixture body 11 by the magnet portion 43.

[0047] At this time, as shown in Figure 9, the guide member 42 has a partition wall portion 68 rising from the central position of the mounting member 40, facing the guide portions 67 on both sides. This prevents the power supply wires 83 of the wiring units 16 and 17 from moving towards the magnet portion 43 and from getting caught between the magnet portion 43 and the mounting base 32.

[0048] As shown in Figure 10, in the wiring area 20, the connector 85 of the wiring unit 16 from one light source unit 12 is connected to the connector 85 of the wiring unit 17 from the other light source unit 13. The connector 85 of the wiring unit 16 and the connector 85 of the other wiring unit 17 electrically connect the power supply wires 83 and mechanically connect the non-power supply wires 84.

[0049] To remove the light source units 12 and 13, the magnet part 43 is pulled downward against the magnetic attraction force of the magnet part 43, causing it to detach from the mounting base 32.

[0050] Then, when AC power is supplied to the power supply unit 15, the power supply unit 15 converts the AC power into DC lighting power, and this lighting power is supplied to the light source units 41 of the light source units 12 and 13 to light up. From the power supply unit 15, lighting power is supplied to the light source unit 41 of one of the light source units 12 where the power supply unit 15 is located via power supply wires (not shown), and lighting power is supplied to the light source unit 41 of the other light source unit 13 via power supply wires 83 of the wiring units 16 and 17.

[0051] Furthermore, as shown in Figure 10, for example, even if the magnetic part 43 becomes detached from the mounting base 32 due to vibration or shock, causing the light source unit 13 to attempt to fall from the fixture body 11, the non-power supply wire 84 of the wiring unit 17 connected to the light source unit 13 and the non-power supply wire 84 of the wiring unit 16 connected to the wiring unit 17 prevent the light source unit 13 from falling.

[0052] At this time, the wiring units 16 and 17 support the light source unit 13 by having their intermediate parts catch on the edge of the wire insertion hole 36, or by supporting the light source unit 13 with the non-powered wires 84 of the wiring units 16 and 17 relative to the light source unit 12 attached to the fixture body 11, thereby preventing the light source unit 13 from falling.

[0053] Even if both light source units 12 and 13 detach from the fixture body 11 at the same time, the light source units 12 and 13 are connected by the non-power supply wires 84 of the wiring units 16 and 17. Therefore, both light source units 12 and 13 are supported by the wiring units 16 and 17 that hook onto the fixture body 11, preventing them from falling.

[0054] In this embodiment, the light source units 12 and 13 use a magnetic part 43 for attachment to the fixture body 11. The light source unit 41 is attached to the lower side of the mounting member 40, and the magnetic part 43 is attached to the upper side of the mounting member 40, forming an integrated structure. Therefore, they can be attached in a single step by simply attracting the magnetic part 43 to the mounting base 32 (socket base 35) provided in the light source arrangement section 18 of the fixture body 11, thereby improving the workability when attaching the light source unit 41 to the fixture body 11.

[0055] When renovating an existing lighting fixture already installed on the ceiling to create the lighting fixture 11, there are many work hours involved, such as removing existing parts and installing light source units 12 and 13. However, by making the installation of light source units 12 and 13 easier, the amount of work can be reduced.

[0056] Since the mounting member 40 is a reflector, it reflects light from the light source unit 41 outwards through the opening on the lower surface of the light source arrangement unit 18, thereby improving the light irradiation efficiency.

[0057] Furthermore, the light source units 12 and 13 of this embodiment are equipped with a guide member 42 on the upper surface side of the mounting member 40, which has a guide portion 67 that rises from both sides in a direction intersecting the longitudinal direction of the mounting member 40 and has an expanded tip. This allows the mounting member 40 to be positioned in a direction intersecting the longitudinal direction with respect to the mounting base 32 provided on the light source arrangement section 18 of the fixture body 11, thereby attracting the magnet portion 43 and improving the workability when attaching the light source unit 41 to the fixture body 11.

[0058] The guide member 42 has a partition wall 68 rising from the central position of the mounting member 40, facing the guide sections 67 on both sides. This prevents the power supply wires 83 of the wiring units 16 and 17 from moving towards the magnet section 43, thus preventing them from getting caught between the magnet section 43 and the mounting base 32, and improving workability when attaching the light source section 41 to the fixture body 11.

[0059] Furthermore, the lighting device 10 of this embodiment includes wiring units 16 and 17 having a power supply wire 83 and a non-power supply wire 84. The power supply wire 83 has its middle section inserted into a wire insertion hole 36, one end connected to a connector 85, and the other end connected to a light source unit 12 or 13. The non-power supply wire 84 is shorter than the power supply wire 83, has its middle section inserted into the wire insertion hole 36, one end connected to the connector 85, and the other end connected to the light source units 12 or 13 at a position closer to the wire insertion hole 36 than where the power supply wire 83 is connected. As a result, the connection of the power supply wire 83 and the connection of the non-power supply wire 84 can be performed in a single step via the connector 85, improving the workability when attaching the light source units 12 or 13 to the fixture body 11.

[0060] Since the connectors 85 of the wiring units 16 and 17, which are connected to the light source units 12 and 13 located in the light source arrangement section 18, are connected to each other in the wiring area section 20, electrical connection between the light source units 12 and 13 and fall prevention from the fixture body 11 can be ensured.

[0061] The above describes the case where an existing lighting fixture already installed on the ceiling is refurbished to form the lighting fixture 10, but it can also be applied when installing a new lighting fixture 10. In this case, after installing the fixture body 11 on the ceiling, the light source units 12 and 13 should be placed on the fixture body 11 as described above.

[0062] Furthermore, in the case of a lighting device with a single light source unit, the aforementioned wiring unit may be used on the input side where power is supplied to ensure electrical connection and prevent the unit from falling onto the fixture body 11.

[0063] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims of the invention and its equivalents. [Explanation of symbols]

[0064] 10 Lighting devices 11. Main body of the device 12,13 Light source units 16,17 Wiring Unit 18 Light source arrangement section 20 Wiring area 36 Wire insertion holes 83 Power supply wires 84 Non-powered power lines 85 Connectors

Claims

1. A device body having a light source placement section, a wiring area provided on the side of the light source placement section, and a wire insertion hole connecting the light source placement section and the wiring area; A light source unit arranged in the aforementioned light source arrangement section; A wiring unit having a connector arranged in the wiring area, a power supply wire whose intermediate portion is inserted through the wire insertion hole, one end connected to the connector, and the other end connected to the light source unit, and a non-power supply wire which is shorter in length than the power supply wire, whose intermediate portion is inserted through the wire insertion hole, one end connected to the connector, and the other end connected to the light source unit at a position closer to the wire insertion hole than the position where the power supply wire of the light source unit is connected; A lighting device characterized by having the following features.

2. The main body of the device is provided with a pair of light source arrangement sections, each of which is arranged on both sides of the wiring area. The connectors of the wiring units, each connected to the light source units arranged in the light source arrangement section, are connected to each other in the wiring area. The lighting device according to feature 1.

Images