Illuminating device

Abstract

To provide an illuminating device in which an attachment structure for attaching a power supply part to a light source unit is improved.SOLUTION: An illuminating device comprises an appliance body, a light source unit, a power supply part 44, and a fixing tool 57. The light source unit comprises a light source module, and a chassis 40, and is attached to the appliance body. The chassis 40 comprises a light source attachment part 46 in which the light source module is attached to one surface side, a side wall part 47 erected to the other surface side opposite to the one surface side from the side edge of the light source attachment part 46, and a light source side engagement part 51 provided in the side wall part 47. The power supply part 44 is arranged on the other surface side of the light source attachment part 46 of the chassis 40. The power supply part 44 comprises a power supply side engagement part 74 attached by being engaged with the light source side engagement part 51 of the chassis 40 on one end side. The fixing tool 57 fixes the other end side of the power supply part 44 to the chassis 40 while the power supply side engagement part 74 on the one end side of the power supply part 44 is engaged with the light source side engagement part 51 of the chassis 40.SELECTED DRAWING: Figure 4

Description

Technical Field

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

Background Art

[0002] Conventionally, there is a lighting device including an instrument body installed on a ceiling surface and a light source unit attached to the lower surface side of the instrument body. The light source unit includes a chassis, a light source module is attached to the front portion of the chassis, and a power supply unit for supplying lighting power to the light source module is attached to the back portion of the chassis. One end side of the power supply unit is engaged with an engagement structure provided on the back portion of the chassis, and the other end side is attached to the back portion of the chassis by a screw.

[0003] By providing an engagement structure for engaging and attaching the power supply unit to the back portion of the chassis, an opening portion is formed on the back portion of the chassis. Therefore, there are problems such as insects from the outside easily entering the light source cover of the light source unit through the opening portion of the chassis, and the heat dissipation performance of the light source module at the opening portion of the chassis deteriorating. It is desired to improve the attachment structure for attaching the power supply unit to the light source unit.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The problem to be solved by the present invention is to provide a lighting device with an improved attachment structure for attaching a power supply unit to a light source unit.

Means for Solving the Problems

[0006] The lighting device of the embodiment includes an appliance body, a light source unit, a power supply unit, and a fixture. The light source unit includes a light source module and a chassis, and is attached to the appliance body. The chassis has a light source attachment portion to which the light source module is attached on one side, a side wall portion that rises from the side edge of the light source attachment portion to the other side opposite to the one side, and a light source side engagement portion provided on the side wall portion. The power supply unit is disposed on the other side of the light source attachment portion of the chassis. The power supply unit has a power supply side engagement portion that is engaged and attached to the light source side engagement portion of the chassis at one end side. The fixture fixes the other end side of the power supply unit to the chassis in a state where the power supply side engagement portion at one end side of the power supply unit is engaged with the light source side engagement portion of the chassis.

Advantages of the Invention

[0007] According to the embodiment, improvement of the attachment structure for attaching the power supply unit to the light source unit can be expected.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0009] Hereinafter, one embodiment will be described with reference to the drawings.

[0010] Figs. 1 to 3 show the lighting device 10. The lighting device 10 includes an appliance body 11 installed on a ceiling surface which is an installation site, and a light source unit 12 detachably attached to the appliance body 11.

[0011] The appliance body 11 is made of metal and is provided in a long shape. The appliance body 11 includes a top plate portion 20, side plate portions 21 on both sides bent from both sides in the short side direction (also referred to as the width direction) intersecting the longitudinal direction of the top plate portion 20, reflecting plate portions 22 on both sides protruding obliquely upward from the lower ends of these side plate portions 21, and end plate portions 23 closing both ends in the longitudinal direction, and is formed in a so-called reverse Fuji shape. An opening 24 is formed on the lower surface between the top plate portion 20, the side plate portions 21 on both sides, and the end plate portions 23 at both ends, and a concave accommodating portion 25 is formed inside. Note that the appliance body 11 is not limited to the reverse Fuji shape, and may be a trough shape without the reflecting plate portion 22, or a hat-shaped type having a hat protruding obliquely downward from the lower ends of the side plate portions 21 on both sides.

[0012] A plurality of mounting holes 26 for mounting to two suspension bolts protruding from the ceiling structure are provided on both end sides in the longitudinal direction of the top plate portion 20. A wiring hole 27 for drawing a power line drawn from the ceiling surface side into the accommodating portion 25 of the appliance body 11 is provided at the center in the longitudinal direction of the top plate portion 20.

[0013] In addition, a terminal block 29 for connecting a power line and a spring receiving member 30 which is a pair of main body side mounting portions for mounting the light source unit 12 are attached to the appliance body 11.

[0014] The terminal block 29 is attached on the lower surface side of the top plate portion 20 of the appliance body 11, on one side in the longitudinal direction of the appliance body 11 with respect to the wiring hole 27. For example, an electric wire for supplying AC power from a commercial AC power source is connected to the terminal block 29, and an electric wire with a connector on the terminal block side for supplying the input AC power to the light source unit 12 side is electrically connected.

[0015] Figure 2 shows the spring receiving member 30. The spring receiving member 30 is attached to two locations near both longitudinal ends on the lower surface of the top plate portion 20 of the instrument body 11. The spring receiving member 30 is attached substantially perpendicular to the lower surface of the top plate portion 20, a hook hole 31 is provided inside the spring receiving member 30, and a hook projection 32 projects upward from the center of the lower edge of the hook hole 31.

[0016] Next, FIGS. 1 to 3 show the light source unit 12. The light source unit 12 includes a long chassis 40, a light source module 41 which is a light source attached to the lower surface side of the chassis 40, a light source cover 42 which covers the light source module 41 and is attached to the chassis 40, and a pair of mounting springs 43 which are light source unit side mounting portions disposed on the upper surface side of the chassis 40. A power supply unit 44 for supplying lighting power to the light source module 41 is attached to the light source unit 12, and the light source unit 12 includes the power supply unit 44.

[0017] The chassis 40 is made of metal and provided in a long shape. The chassis 40 has a long light source mounting portion 46 which is attached to the lower surface side which is the front side where the light source module 41 is on one side, and both side wall portions (side surface portions) 47 which are raised from both side portions in the short hand direction of the light source mounting portion 46 to the upper surface side which is the other surface side, the back side. The upper end sides of both side wall portions 47 are bent in an arc shape on the outer surface side of the side wall portions 47.

[0018] On the upper surface side of the chassis 40, on the other longitudinal side opposite to the terminal block 29 with respect to the wiring hole 27 of the instrument body 11 when the light source unit 12 is attached to the instrument body 11, a power supply mounting portion 48 for attaching the power supply unit 44 is provided. As shown in FIG. 4, the power supply mounting portion 48 has a first mounting portion 49 for attaching one end side of the power supply unit 44 and a second mounting portion 50 for attaching the other end side of the power supply unit 44.

[0019] The first attachment portion 49 has a light source side engaging portion (chassis side engaging portion) 51 provided on the side wall portions 47 on both sides of the chassis 40. As shown in FIGS. 5 and 6, the light source side engaging portion 51 is constituted by an engaging piece raised on the inner surface side of the side wall portion 47. The light source side engaging portion 51 has an upper engaging portion 52 raised from the tip side on the inner surface side of the side wall portion 47, and an inner engaging portion 53 extending downward from the tip side of the upper engaging portion 52. An engaging groove 54 with a predetermined interval is provided between the inner engaging portion 53 and the inner surface of the side wall portion 47. The engaging groove 54 is covered by the upper engaging portion 52 on the upper side, but the lower side and both end sides in the longitudinal direction of the chassis 40 are open. A raised hole 55 that opens by raising the light source side engaging portion 51 is formed in the side wall portion 47.

[0020] The second attachment portion 50 has an attachment hole 56 provided in the light source attachment portion 46 of the chassis 40. One attachment hole 56 is provided at the center in the width direction of the light source attachment portion 46, or two attachment holes 56 are provided on both sides in the width direction. A fixture 57 for fixing the power supply portion 44 to the upper surface side of the chassis 40 is inserted into the attachment hole 56. Bolts and screws including screws are used for the fixture 57. Although the light source module 41 is attached to the light source attachment portion 46 of the chassis 40, a region through which the fixture 57 is inserted is provided in a part of the light source module 41 so that the light source module 41 and the fixture 57 do not interfere with each other, or the fixture 57 is arranged with its position shifted in the width direction of the light source module 41.

[0021] Also, FIGS. 1 and 2 show the light source module 41. The light source module 41 has a long light source substrate and a plurality of light emitting elements mounted along the longitudinal direction on the front surface side of the light source substrate. The back surface side of the light source substrate is attached so as to face the lower surface side of the light source attachment portion 46 of the chassis 40. As the light emitting elements, semiconductor light emitting elements such as LEDs and organic ELs are used. The light source module 41 is electrically connected to the lighting power output portion of the power supply portion 44 by a lighting power supply line.

[0022] Further, the light source cover 42 is made of a resin having translucency and light diffusing properties, and light from the light emitting element of the light source module 41 passes through it. The light source cover 42 is provided in a long shape and is formed such that the cross-sectional shape in the width direction with respect to the longitudinal direction is a convex curved surface on the front side.

[0023] On the upper surface side of the light source cover 42, an opening is formed along the longitudinal direction in the central region in the width direction where the light source module 41 is disposed. On both side regions of the opening, which are both side regions in the width direction on the upper surface side of the light source cover 42, there are provided a mounting portion 58 that engages with and is attached to the outside and the upper side of the side wall portions 47 on both sides of the chassis 40, and a contact portion 59 that can contact the lower end portions of the side plate portions 21 on both sides of the instrument body 11, along the longitudinal direction. The light source cover 42 is slid from the longitudinal direction with respect to the chassis 40 and integrally combined.

[0024] An end face cover 60 is attached to the end of the light source cover 42. The end face cover 60 is made of resin, but may be non-translucent or may have translucency. The end face cover 60 is attached to the end of the light source cover 42 combined with the chassis 40 and holds the light source cover 42 on the chassis 40.

[0025] In addition, the mounting spring 43 is attached to the upper surface of the chassis 40 at two locations near both longitudinal ends by the attachment members 62. The mounting spring 43 is constituted by, for example, a torsion spring. A pair of coil portions 63 are held by the attachment members 62, and a substantially U-shaped hook portion 64 connecting between one end portions of the pair of coil portions 63 extends toward each end side in the longitudinal direction of the light source unit 12, and this hook portion 64 can be engaged with the hook hole 31 of the spring receiving member 30. The other end portions of the pair of coil portions 63 are attached to the attachment members 62. The mounting spring 43 is arranged such that a spring force acts in a direction in which the hook portion 64 goes from the upper side to the lower side through the end side of the chassis 40. The mounting spring 43 is inserted into the hook hole 31 of the spring receiving member 30 of the instrument main body 11 in a state where the hook portion 64 is pulled up from the chassis 40 against the spring force and hooked on the hook projection 32, thereby temporarily suspending the light source unit 12 on the instrument main body 11. Further, by pushing up the light source unit 12, the light source unit 12 is pulled up until the contact portion 59 of the light source cover 42 abuts against the lower end portion of the side plate portion 21 of the instrument main body 11 by the spring force of the mounting spring 43 and attached to the instrument main body 11, and is configured to maintain the attached state.

[0026] Note that the mounting spring 43 is not limited to a torsion spring, and a leaf spring or the like may be used. Further, the mounting spring 43 may be attached to the instrument main body 11, and the spring receiving member 30 may be attached to the light source unit 12.

[0027] In addition, the power supply unit 44 is long and is attached along the longitudinal direction on the upper surface side of the chassis 40. That is, the power supply unit 44 is arranged on the upper surface side of the chassis 40 on the other side in the longitudinal direction opposite to the terminal block 29 with respect to the wiring hole 27 of the instrument main body 11 when the light source unit 12 is attached to the instrument main body 11. The power supply unit 44 is housed in the housing portion 25 of the instrument main body 11 when the light source unit 12 is attached to the instrument main body 11.

[0028] The power supply unit 44 inputs AC power through the terminal block 29, converts it into lighting power which is a predetermined DC power, and supplies it to the light source module 41. The power supply unit 44 includes a power supply board 66 and a power supply case 67 that houses the power supply board 66.

[0029] The power supply board 66 is provided in a long shape, and a plurality of electronic components constituting the power supply circuit are mounted thereon. One end side of the power supply board 66 faces the terminal block 29 and is a power input section for inputting AC power from the terminal block 29, and an input side terminal block 68 for inputting AC power is mounted thereon. The other end side of the power supply board 66 is a lighting power output section for outputting lighting power, and an output side terminal block 69 for outputting lighting power is mounted thereon. An electric wire with a connector on the power supply side is electrically connected to the input side terminal block 68 and can be connector-connected to an electric wire with a connector on the terminal block side that is electrically connected to the terminal block 29. The output side terminal block 69 and the light source module 41 are electrically connected by a lighting power supply line.

[0030] The power supply case 67 has a first case part 70 that is a bottom plate and a second case part 71 that is attached and mounted to the first case part 70, and the power supply board 66 is disposed between the first case part 70 and the second case part 71.

[0031] The first case part 70 has a bottom plate part 72 and side plate parts 73 that are raised from both sides in the width direction of the bottom plate part 72, and is formed in a substantially U-shape facing upward. The bottom plate part 72 is disposed on the upper surface side of the light source mounting part 46 of the chassis 40, and the side plate parts 73 on both sides are disposed facing the inner surface sides of the side wall parts 47 on both sides of the chassis 40. Further, the second case part 71 is provided in a cover shape formed in a substantially U-shape facing downward, and both side parts are connected to the side plate parts 73 of the first case part 70.

[0032] The first case part 70 is longer in the longitudinal direction than the second case part, and both end parts of the first case part 70 protrude from both end parts of the second case part 71. The power supply board 66 is shorter in the longitudinal direction than the first case part 70 and longer than the second case part, and both end parts of the power supply board 66 protrude from both end parts of the second case part 71. The input side terminal block 68 and the output side terminal block 69 disposed at both end parts of the power supply board 66 are disposed outside both end parts of the second case part 71.

[0033] The power supply unit 44 has one end in the longitudinal direction attached to the first attachment portion 49 of the chassis 40, and the other end attached to the second attachment portion 50 of the chassis 40.

[0034] As shown in FIGS. 5 and 6, on one end side of the power supply unit 44, a power supply side engaging portion 74 is provided which engages and is attached to the light source side engaging portion 51 of the first attachment portion 49 of the chassis 40. The power supply side engaging portion 74 is an engaging claw formed by a part of the side plate portion 73. With the power supply unit 44 (the bottom plate portion 72 of the first case portion 70) disposed on the upper surface side of the light source attachment portion 46 of the chassis 40, when the power supply unit 44 is slid in the longitudinal direction of the chassis 40, it is inserted into the engaging groove 54 of the light source side engaging portion 51 from the longitudinal direction and engaged. On the side plate portion 73, a stopper portion 75 is provided which abuts against the light source side engaging portion 51 to restrict sliding in the engaging direction in a state where the power supply side engaging portion 74 is engaged with the light source side engaging portion 51 at a predetermined engaging position.

[0035] In a state where the power supply side engaging portion 74 is engaged with the light source side engaging portion 51, the power supply side engaging portion 74 is engaged between the light source attachment portion 46 of the chassis 40 and the upper engaging portion 52 of the light source side engaging portion 51 to restrict movement in the vertical direction, and the power supply side engaging portion 74 is engaged between the side wall portion 47 of the chassis 40 and the inner engaging portion 53 of the light source side engaging portion 51 to restrict movement in the lateral direction of the chassis 40. Further, the cut-out and raised hole 55 in the side wall portion 47 of the chassis 40 is closed by the power supply side engaging portion 74.

[0036] As shown in FIG. 4, the other end side of the power supply unit 44 is fixed to the chassis 40 by the fixture 57 in a state where the power supply side engaging portion 74 is engaged with the light source side engaging portion 51. An attachment hole 76 is provided in the bottom plate portion 72 of the first case portion 71 on the other end side of the power supply unit 44. The attachment hole 76 is arranged coaxially with the attachment hole 56 of the chassis 40 in a state where the power supply side engaging portion 74 is engaged with the light source side engaging portion 51, and a fixture 57 that passes through the attachment hole 56 of the chassis 40 is screwed or inserted. The fixing by the fixture 57 may be performed by screwing a screw, which is the fixture 57, into the attachment hole 76 for fixing, or a nut may be screwed and fixed to the tip side of the screw that passes through the attachment hole 76 and protrudes on the bottom plate portion 72 of the first case portion 71 with the screw, which is the fixture 57.

[0037] Here, the procedure for attaching the power supply unit 44 to the chassis 40 will be described.

[0038] As shown in FIG. 5, on the central side in the longitudinal direction of the chassis 40 rather than the position where the light source side engaging portion 51 of the chassis 40 is provided, the power supply side engaging portion 74 on one end side of the power supply unit 44 faces the light source side engaging portion 51 of the chassis 40, and the power supply unit 44 is arranged on the upper surface side of the light source attachment portion 46 through the side wall portions 47 on both sides of the chassis 40.

[0039] By sliding the power supply unit 44 along the longitudinal direction of the chassis 40 toward the end side where the light source side engaging portion 51 of the chassis 40 is provided, as shown in FIG. 6, the power supply side engaging portion 74 of the power supply unit 44 is inserted into the engaging groove 54 of the light source side engaging portion 51 of the chassis 40, and the power supply side engaging portion 74 is engaged with the light source side engaging portion 51. In a state where the power supply side engaging portion 74 is engaged with the light source side engaging portion 51 at a predetermined engaging position, the slide of the power supply unit 44 is restricted by the stopper portion 75 provided on the side plate portion 73 of the power supply unit 44 abutting against the light source side engaging portion 51.

[0040] As shown in FIG. 4, the fixture 57 is inserted into the attachment hole 76 of the power supply unit 44 through the attachment hole 56 from the lower surface side of the chassis 40, and the other end side of the power supply unit 44 is fixed to the chassis 40 by the fixture 57.

[0041] In this way, one end side of the power supply unit 44 is fixed to the chassis 40 by the engagement between the light source side engaging portion 51 and the power supply side engaging portion 74, and the other end side is fixed to the chassis 40 by the fixture 57, so that the power supply unit 44 is securely fixed to the chassis 40.

[0042] Next, the installation of the lighting device 10 will be described.

[0043] Pull the power line drawn from the ceiling surface into the appliance body 11 through the wiring hole 27, screw nuts through the pair of mounting holes 26 of the appliance body 11 onto the pair of suspension bolts protruding from the ceiling surface, and install the appliance body 11 on the ceiling surface. Electrically connect the power line to the terminal block 29.

[0044] Lift the hooked portions 64 of the pair of mounting springs 43 from the light source unit 12, insert the tip sides of these hooked portions 64 into the hook holes 31 of the pair of spring receiving members 30 of the appliance body 11, and hook them on the hook projections 32. In this state, the light source unit 12 is temporarily suspended below the appliance body 11.

[0045] Connect the wire with connector of the terminal block 29 and the wire with connector of the power supply unit 44 by connector through the gap between the appliance body 11 and the temporarily suspended light source unit 12.

[0046] By pushing up the light source unit 12 upward toward the appliance body 11, the hooked portions 64 of the mounting springs 43 are inserted into the hook holes 31 of the spring receiving members 30, and a spring force acting in the direction of pulling up the light source unit 12 by the mounting springs 43 is applied, and the light source unit 12 is pulled up and attached to the appliance body 11.

[0047] Then, the AC power supplied by the power line is input to the power supply unit 44 through the terminal block 29, the lighting power obtained by converting the AC power by the power supply unit 44 is supplied to the light source module 41, and the plurality of light emitting elements of the light source module 41 are lit.

[0048] Also, when removing the light source unit 12 from the appliance body 11, the light source unit 12 is pulled down against the spring force of the mounting spring 43, and the mounting spring 43 is removed from the spring receiving member 30, whereby the light source unit 12 is removed.

[0049] In the lighting device 10 configured as described above, one end side power source side engaging portion 74 of the power source unit 44 is engaged with the light source side engaging portion 51 of the chassis 40, and the other end side of the power source unit 44 is fixed to the chassis 40 by the fixture 57. Therefore, the number of components such as screws for fixing the power source unit 44 to the chassis 40 can be reduced, and the workability of assembly can be improved.

[0050] Moreover, since the light source side engaging portion 51 is provided on the side wall portion 47 of the chassis 40 and no engaging portion forming opening or the like is provided in the light source mounting portion 46 of the chassis 40 to which the light source module 41 is attached, it is possible to suppress the intrusion of insects from the outside into the light source cover 42 of the light source unit 12, and it is possible to suppress a decrease in the heat dissipation performance of the light source module 41.

[0051] Since the mounting portion 58 of the light source cover 42 is engaged with the side wall portion 47 of the chassis 40, when the light source side engaging portion 51 is provided on the side wall portion 47 of the chassis 40, the mounting portion 58 of the light source cover 42 is disposed facing the raised hole 55 of the light source side engaging portion 51, and it is possible to suppress the intrusion of insects from the outside into the light source cover 42 of the light source unit 12. Further, since the raised hole 55 of the light source side engaging portion 51 is closed by the power source side engaging portion 74 that engages with the light source side engaging portion 51, it is possible to more reliably suppress the intrusion of insects from the outside into the light source cover 42 of the light source unit 12.

[0052] Also, one end side of the power source unit 44 is attached to the chassis 40 by the power source side engaging portion 74 provided on the side surface (side plate portion 73) of the power source unit 44, and the other end side of the power source unit 44 is fixed to the chassis 40 by the fixing portion 57 with the bottom surface (bottom plate portion 72) of the power source unit 44, that is, since the power source unit 44 is attached to the chassis 40 on different surfaces, rattling of the power source unit 44 with respect to the chassis 40 can be prevented.

[0053] In addition, in the present embodiment, the light source side engaging portion 51 is provided on the side wall portions 47 on both sides of the chassis 40, but it may be provided on either one of them, and one end side of the power supply unit 44 can be attached to the chassis 40.

[0054] Further, the light source side engaging portion 51 may have the back surface in the direction in which the power supply side engaging portion 74 is inserted closed even when the power supply unit 44 slides. Further, the power supply side engaging portion 74 may protrude in a lever shape from the side plate portion 73. In this case, the light source side engaging portion 51 may be formed in a bag shape that is opened only in the insertion direction of the power supply side engaging portion 74. Further, the light source side engaging portion 51 may be provided in a lever shape or a claw shape, and the power supply side engaging portion 74 may be provided in a receiving portion shape into which the lever-shaped or claw-shaped light source side engaging portion 51 is inserted. Thus, the light source side engaging portion 51 and the power supply side engaging portion 74 may have any configuration as long as they are configured to be relatively inserted and engaged by the sliding of the power supply unit 44.

[0055] Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalent scope thereof.

Explanation of Reference Numerals

[0056] 10 Lighting device 11 Appliance main body 12 Light source unit 40 Chassis 41 Light source module 44 Power supply unit 46 Light source mounting portion 47 Side wall portion 51 Light source side engaging portion 57 Fixture 74 Power supply side engaging portion

Claims

1. An appliance body; A light source unit including a light source module, a light source mounting portion to which the light source module is attached on one side, a side wall portion raised from a side edge of the light source mounting portion to the other side opposite to the one side, and a light source side engaging portion provided on the side wall portion, the light source unit being attached to the appliance body; A power supply unit having a power supply side engaging portion engaged and attached to the light source side engaging portion of the chassis at one end side, the power supply unit being disposed on the other side of the light source mounting portion of the chassis; A fixture for fixing the other end side of the power supply unit to the chassis in a state where the power supply side engaging portion at one end side of the power supply unit is engaged with the light source side engaging portion of the chassis; An illumination device, characterized by comprising the above components.

2. The power supply side engaging portion of the power supply unit is provided on a side surface facing the side wall portion of the chassis, The fixture fixes a surface different from the side surface of the power supply unit to the chassis The illumination device according to claim 1, characterized by the above features.

Images