Illuminating device

Abstract

To provide an illuminating device that can reduce the number of components, and improve assemblability.SOLUTION: An illuminating device comprises a light source board 61, a power supply part 45, and a fixing member 80. A light emitting element is mounted on the light source board 61. The power supply part 45 comprises a power supply board 73, and outputs lighting power for lighting the light emitting element. The fixing member 80 fixes and electrically connects the light source board 61 and the power supply board 73, and supplies the lighting power outputted from the power supply board 73, to the light source board 61.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 a light source substrate on which a light emitting element is mounted and a power supply unit that supplies lighting power to the light emitting element. In this lighting device, the power supply unit is fixed to an appliance body, a chassis on the light source side, etc. with screws and nuts, and the power supply unit and the light source substrate are electrically connected by wiring. In such a lighting device, reduction in the number of parts and improvement in assemblability are desired.

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 reducing the number of parts and improving assemblability.

Means for Solving the Problems

[0005] The lighting device according to the embodiment includes a light source substrate, a power supply unit, and a fixing member. The light source substrate mounts a light emitting element. The power supply unit has a power supply substrate and outputs lighting power for lighting the light emitting element. The fixing member fixes and electrically connects the light source substrate and the power supply substrate, and supplies the lighting power output from the power supply substrate to the light source substrate.

Effects of the Invention

[0006] According to the lighting device of the embodiment, reduction in the number of parts and improvement in assemblability can be expected.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Mode for Carrying Out the Invention

[0008] Hereinafter, one embodiment will be described with reference to the drawings.

[0009] The lighting device 10 is shown in FIGS. 1 to 3. The lighting device 10 is a ceiling-mounted lighting device installed on, for example, a ceiling surface which is an installation location. The lighting device 10 has a long base light as a light-emitting part.

[0010] The lighting device 10 includes a fixture body 11 installed on the ceiling surface, and a light source unit (light source bar) 12 detachably attached to the fixture body 11.

[0011] The fixture body 11 is made of metal and is provided in a long shape. The fixture body 11 includes a top plate portion 20, both side plate portions 21 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, both reflection plate portions 22 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 inverted Fuji shape. A concave accommodation portion 24 opening downward is formed between the top plate portion 20, both side plate portions 21 on both sides, and end plate portions 23 at both ends. Note that the fixture body 11 is not limited to the inverted Fuji shape, and may be various types such as a trough shape without the reflection plate portion 22, or a hat-shaped type having a hat protruding obliquely downward from the lower ends of both side plate portions 21.

[0012] At both longitudinal ends of the top plate portion 20, mounting holes 25 for attachment to two suspension bolts from a ceiling structure protruding from the ceiling surface are provided. At the center in the longitudinal direction of the top plate portion 20, a wiring hole 26 for drawing a power line drawn from the ceiling surface into the accommodating portion 24 of the appliance body 11 is provided.

[0013] The appliance body 11 includes spring receivers 27 which are a pair of appliance body side attachment portions. The spring receivers 27 are attached at two locations near both longitudinal ends on the lower surface of the top plate portion 20 of the appliance body 11 and are accommodated in the accommodating portion 24. The spring receivers 27 protrude substantially perpendicularly to the lower surface of the top plate portion 20, a hanging hole 28 is provided in the inner region of the spring receiver 27, and a hanging protrusion 29 protrudes upward from the center of the lower edge of this hanging hole 28.

[0014] Next, the light source unit 12 is shown in FIGS. 1 to 6. The light source unit 12 includes a long chassis 40, a light source module 41 (see FIG. 5) attached to the lower surface side of this chassis 40, a light source cover 42 attached to the chassis 40 covering this light source module 41, a pair of mounting springs 43 which are light source unit side attachment portions disposed on the upper surface side of the chassis 40, and a terminal block 44 and a power supply unit 45 disposed on the upper surface side of the chassis 40.

[0015] The chassis 40 is made of metal and is provided in a long shape. The chassis 40 includes a long light source attachment portion 48 and rising portions 49 rising upward from both side portions in the short hand direction of this light source attachment portion 48.

[0016] In the central region in the longitudinal direction of the light source attachment portion 48, a first power supply attachment portion 51 and a second power supply attachment portion 52 for attaching the power supply unit 45 are provided. The first power supply attachment portion 51 is provided near the center of the light source attachment portion 48, and the second power supply attachment portion 52 is provided on one end side of the light source attachment portion 48 rather than the first power supply attachment portion 51.

[0017] The first power supply attachment part 51 has a bulging part 53 that protrudes from the back side of the chassis 40. The front end surface of the bulging part 53 is provided in a planar shape, and a mounting hole 54 is provided in the front end surface of the bulging part 53. The mounting hole 54 is provided in a shape like a funnel hole having a circular insertion hole 55 and an insertion groove 56 that is provided in a groove shape from the insertion hole 55 toward the other end side of the light source attachment part 48 and whose groove width is smaller than the diameter of the insertion hole 55.

[0018] The second power supply attachment part 52 has a mounting piece part 57 that is cut and raised substantially perpendicularly from the light source attachment part 48 toward one end side of the light source attachment part 48. The mounting piece part 57 is raised from the light source attachment part 48 along a direction intersecting the longitudinal direction of the chassis 40. A long hole-shaped mounting hole 58 that is long in the vertical direction, which is the upward direction, is provided in the mounting piece part 57. An opening part 59, which is an insulating opening part whose at least a part is opened by cutting and raising the mounting piece part 57, is provided on the central side of the light source attachment part 48 with respect to the mounting piece part 57.

[0019] Further, the light source module 41 has a long light source substrate 61 on which a wiring pattern is formed on the surface side, and a plurality of light emitting elements 62 mounted along the longitudinal direction of the light source substrate 61 on the wiring pattern on the surface side of the light source substrate 61. The light source substrate 61 is attached along the longitudinal direction of the chassis 40 so that the back side faces the lower surface side of the chassis 40. The light source substrate 61 is attached to the chassis 40 by a plurality of screws, a plurality of claws protruding from the chassis 40, and the like. As the light emitting element 62, a semiconductor light emitting element such as an LED or an organic EL is used.

[0020] The light source cover 42 is a translucent cover made of resin and having translucency and light diffusing properties, and the light from the light emitting element 62 passes through it. The light source cover 42 is formed so that the cross-sectional shape in the width direction is a convex curved surface shape on the front side.

[0021] On the upper surface side of the light source cover 42, an opening for arranging the light source module 41 is formed along the longitudinal direction in the central region in the width direction, and abutting portions 63 that can abut against the lower ends of the side plate portions 21 on both sides of the instrument body 11 are formed along the longitudinal direction in both side regions in the width direction of the opening. On both side abutting portions 63, a lower engaging portion 64 that engages with the lower surface side of the light source mounting portion 48 of the chassis 40 and an upper engaging portion 65 that engages on the upright portion 49 of the chassis 40 are provided. The chassis 40 and the light source cover 42 are combined by sliding in the longitudinal direction.

[0022] An end face cover 66 is attached to the end of the light source cover 42. The end face cover 66 is made of resin and may be non-translucent or may have translucency. The end face cover 66 is attached to the end of the light source cover 42 held by the chassis 40 and holds the light source cover 42 with respect to the chassis 40.

[0023] The mounting spring 43 is attached by attachment members 67 at two locations near both ends in the longitudinal direction on the upper surface of the chassis 40. The mounting spring 43 is composed of, for example, a torsion spring, a pair of coil portions 68 are held by the attachment members 67, and a substantially U-shaped hook portion 69 connecting between one ends of the pair of coil portions 68 extends toward each end side in the longitudinal direction of the light source unit 12, and this hook portion 69 can be engaged with the hook hole 28 of the spring receiver 27. The other ends of the pair of coil portions 68 are attached to the attachment members 67. The mounting spring 43 is arranged such that a spring force acts in a direction in which the hook portion 69 goes from the upper side to the lower side through the end side of the chassis 40. The mounting spring 43 inserts the hook portion 69 into the hook hole 28 of the spring receiver 27 of the instrument body 11 and hooks it on the hook projection 29 in a state where the hook portion 69 is pulled up from the chassis 40 against the spring force, temporarily suspends the light source unit 12 on the instrument body 11, and further, by pushing up the light source unit 12, pulls up the light source unit 12 until the abutting portion 63 of the light source cover 42 abuts against the lower end of the side plate portion 21 of the instrument body 11 and attaches it to the instrument body 11, and is configured to maintain the attached state.

[0024] Note that the mounting spring 43 is not limited to a torsion spring, and a leaf spring or the like may be used. Also, the instrument body 11 side may be provided with the mounting spring 43, and the light source unit 12 side may be provided with the spring receiver 27.

[0025] Also, the terminal block 44 is integrally incorporated into the power supply unit 45. A power supply line drawn into the instrument body 11 from the wiring hole 26 is connected to the power supply unit 45, and a feed wiring is connected when supplying power to other lighting devices. The power supply line and the feed wiring may include a ground wire in addition to a pair of voltage lines. Connection holes 71 into which the power supply line and the feed wiring are inserted and connected are provided on one surface of the terminal block 44, and terminals electrically connected to the power supply line and the feed wiring are disposed inside each connection hole 71. The terminal block 44 is disposed on one end side of the light source unit 12 with respect to the wiring hole 26 in a state where the light source unit 12 is attached to the instrument body 11, and one surface of the terminal block 44 provided with the connection holes 71 faces the wiring hole 26. Therefore, the power supply line and the feed wiring drawn into the instrument body 11 from the wiring hole 26 are inserted and connected to the connection holes 71 on one surface of the terminal block 44.

[0026] Also, the power supply unit 45 is provided in a long shape and is attached along the longitudinal direction of the chassis 40. The power supply unit 45 is attached to the power supply attachment portions 51 and 52 between the mounting springs 43 at both ends of the chassis 40. The power supply unit 45 is accommodated in the accommodation portion 24 of the instrument body 11 in a state where the light source unit 12 is attached to the instrument body 11.

[0027] The power supply unit 45 includes a power supply board 73 on which a plurality of power supply components constituting a power supply circuit are mounted, and a power supply case 74 that covers and accommodates the power supply board 73. The power supply circuit of the power supply unit 45 inputs external power, which is AC power from, for example, a commercial AC power supply, through the terminal block 44, converts it into lighting power, which is DC power for lighting the light emitting element 62 of the light source module 41, and supplies it to the light source module 41.

[0028] The power supply board 73 has a first surface 73a facing the chassis 40 and a second surface 73b opposite to the first surface 73a. Power supply components are mounted on the second surface 73b of the power supply board 73, and a wiring pattern for electrically connecting the terminals of the power supply components by soldering is formed on the first surface 73a.

[0029] The power supply board 73 is provided in a long shape, and an input portion 75 for inputting external power is provided on one end side in the longitudinal direction of the power supply board 73, and an output portion 76 for outputting lighting power is provided on the other end side. The input portion 75 of the power supply board 73 faces the wiring hole 26 of the appliance main body 11, and the output portion 76 faces one end side of the chassis 40 on the opposite side to the wiring hole 26 of the appliance main body 11.

[0030] A terminal block 44 is disposed on the input portion 75 side of the second surface 73b of the power supply board 73. Each terminal in the terminal block 44 is electrically connected to the wiring pattern of the power supply board 73, and the external power supplied to the terminal block 44 is input to the input portion 75 of the power supply board 73.

[0031] On the end side of the input portion 75 of the power supply board 73, a mounting screw 77 is inserted from the first surface 73a side to the second surface 73b side, and a nut 78 is screwed onto the mounting screw 77 on the second surface 73b side. By these mounting screw 77 and nut 78, the input portion 75 side of the power supply board 73 is attached to the first power supply attachment portion 51 of the chassis 40. After the head of the mounting screw 77 is inserted into the insertion hole 55 of the bulging portion 53 of the first power supply attachment portion 51, the screw shaft portion of the mounting screw 77 is moved to the insertion groove 56, so that the head of the mounting screw 77 can be engaged with the bulging portion 53. By tightening the nut 78 with respect to the mounting screw 77 and sandwiching the bulging portion 53 and the power supply board 73 between the head of the mounting screw 77 and the nut 78, the input portion 75 side of the power supply board 73 is fixed to the chassis 40. In the region of the end side of the input portion 75 of the power supply board 73, wiring patterns and power supply components other than grounding are not arranged, and an insulation distance from the bulging portion 53, the mounting screw 77, and the nut 78 is ensured.

[0032] The output section 76 of the power supply board 73 is fixed to the light source board 61 by a pair of fixing members 80 and is electrically connected thereto. The pair of fixing members 80 are provided in a pair for supplying lighting power which is DC power, and the lighting power supplied from the power supply board 73 to the light source board 61 flows therethrough.

[0033] The fixing member 80 includes a fixing screw 81 which is a fastening member and a terminal member 82. The terminal member 82 is fixed to the back side of the light source board 61, and passes through the central region of the opening 59 of the light source mounting portion 48 of the chassis 40 and protrudes to the back side of the light source mounting portion 48 of the chassis 40. The fixing screw 81 is inserted from the second surface 73b side of the power supply board 73 and screwed to the terminal member 82, thereby sandwiching and fixing the power supply board 73 between the fixing screw 81 and the terminal member 82. An insulation distance is secured between the terminal member 82 and the chassis 40 via the opening 59, and the fixing member 80 is insulated from the chassis 40.

[0034] The fixing screw 81 is made of a conductive metal. The terminal member 82 is made of a conductive metal and has a cylindrical portion 83 which also serves as a spacer, and a fixing portion 84 which protrudes from one end surface of the cylindrical portion 83, passes through the light source board 61 and is fixed thereto. A screw hole 85 into which the fixing screw 81 is screwed is formed in the other end surface of the cylindrical portion 83 on the side opposite to the fixing portion 84. The fixing portion 84 is press-fitted into a hole provided in the light source board 61, or is elastically crimped and fixed to the edge of the hole of the light source board 61, and is electrically connected to a wiring pattern provided on the front side of the light source board 61 by soldering.

[0035] The power supply board 73 is attached to the chassis 40 directly and indirectly via the light source board 61 in a state of straddling the bulging portion 53 of the chassis 40 and the pair of terminal members 82 fixed to the light source board 61. The first surface 73a of the power supply board 73 is arranged to face substantially parallel to the back side of the light source mounting portion 48 of the chassis 40 with a gap capable of securing an insulation distance therebetween.

[0036] At the end side of the output part 76 of the power supply substrate 73, a pair of insertion holes 86 through which a pair of fixing screws 81 are inserted are provided. The pair of insertion holes 86 are arranged side by side in the short side direction, which is a direction intersecting the longitudinal direction of the power supply substrate 73. Also, corresponding to the arrangement of the pair of fixing screws 81 and the pair of insertion holes 86, the pair of terminal members 82 are also arranged side by side in the short side direction of the light source substrate 61. Therefore, the pair of fixing members 80 are arranged side by side in the short side direction with respect to the light source substrate 61 and the power supply substrate 73.

[0037] Note that the pair of fixing members 80 may be arranged side by side in the longitudinal direction with respect to the light source substrate 61 and the power supply substrate 73 due to the relationship of the arrangement of the light emitting elements 62 of the light source substrate 61 and the relationship of the wiring pattern of the power supply substrate 73.

[0038] On the first surface 73a of the power supply substrate 73, wiring patterns of different polarities for outputting lighting power are provided around each insertion hole 86. By tightening the fixing screw 81 that passes through each insertion hole 86 and is screwed to the terminal member 82, the end face of the cylindrical portion 83 of the terminal member 82 comes into contact with the wiring patterns of each polarity and is electrically connected.

[0039] The power supply case 74 is formed in a long shape by a metal plate, covers the power supply components arranged on the second surface 73b of the power supply substrate 73, and is attached to the chassis 40, and houses the power supply components between it and the chassis 40. The power supply case 74 is in an exposed state without covering the terminal block 44 arranged on the input part 75 side of the power supply substrate 73.

[0040] The power supply case 74 has an upper surface portion 88 facing the second surface 73b of the power supply substrate 73, side surface portions 89 bent from both sides in the short side direction of the upper surface portion 88, and end surface portions 90, 91 bent from both ends in the longitudinal direction of the upper surface portion 88, and the lower surface side facing the chassis 40 is open. In a state where the power supply substrate 74 is covered with the power supply case 74, the power supply substrate 73 is arranged between the both side surface portions 89 of the power supply case 74, and the end surface portion 90 on one end side in the longitudinal direction of the power supply case 74 is arranged so as to overlap the mounting piece portion 57 raised from the chassis 40, and the end surface portion 91 on the other end side is arranged spaced above the second surface 73b of the power supply substrate 73.

[0041] On an end face portion 90 at one end side in the longitudinal direction of the power supply case 74, a stop hole 92 is provided facing a mounting hole 58 of a mounting piece portion 57 raised from the chassis 40. By press-fitting and fixing a stopper 93 such as a push rivet into the mounting hole 58 of the mounting piece portion 57 through the stop hole 92 of the end face portion 90, the power supply case 74 is held in a state of being prevented from coming off the chassis 40. At a position where the side face portion 89 and the end face portion 90 of the power supply case 74 contact the back side of the light source mounting portion 48 of the chassis 40, the position in the direction in which the power supply case 74 approaches the back side of the light source mounting portion 48 of the chassis 40 is regulated. On the other end side of the power supply case 74, protrusions 94 that engage with the first surface 73a of the power supply substrate 73 project from the inner surfaces of the side face portions 89 on both sides, and the position of the other end side of the power supply case 74 in the direction away from the chassis 40 is regulated.

[0042] Next, the assembly of the light source unit 12 will be described.

[0043] As shown in FIG. 4, after mounting the light source substrate 61 on the chassis 40, a power supply unit 45 including a terminal block 44 is mounted on the chassis 40.

[0044] After inserting the head of a mounting screw 77 attached to the input portion 75 of the power supply substrate 73 into the insertion hole 55 of the bulging portion 53 of the chassis 40, the screw shaft portion of the mounting screw 77 is moved into the insertion groove 56 so that the head of the mounting screw 77 can engage with the bulging portion 53, and a nut 78 is tightened against the mounting screw 77 to sandwich the bulging portion 53 and the power supply substrate 73 between the head of the mounting screw 77 and the nut 78, thereby fixing the input portion 75 side of the power supply substrate 73 to the chassis 40.

[0045] The output section 76 side of the power supply board 73 is arranged on a pair of terminal members 82. By screwing and tightening a pair of fixing screws 81 through the insertion holes 86 of the power supply board 73 into the screw holes 85 of the pair of terminal members 82, the power supply board 73 is sandwiched between the heads of the fixing screws 81 and the terminal members 82, thereby fixing the output section 76 side of the power supply board 73 to the chassis 40 via the light source board 61. By tightening the fixing screws 81, the end faces of the cylindrical portions 83 of the respective terminal members 82 come into contact with the wiring patterns of each polarity that output lighting power on the power supply board 73, the light source board 61 and the output section 76 of the power supply board 73 are electrically connected, and the supply of lighting power from the power supply board 73 to the light source board 61 becomes possible.

[0046] Cover the power supply board 73 and the power supply components on this power supply board 73 with a power supply case 74. Insert a stopper 93 through a stopper hole 92 in the end face portion 90 of the power supply case 74 into a mounting hole 58 in the mounting piece portion 57 of the chassis 40 and lock it, thereby fixing the power supply case 74 to the chassis 40.

[0047] Note that a light source cover 42, a mounting spring 43, etc. are also attached to the chassis 40.

[0048] Next, the installation of the lighting device 10 will be described.

[0049] Pass a power supply line from the ceiling surface through the wiring hole 26 of the appliance body 11, pass the mounting hole 25 of the appliance body 11 through a suspension bolt protruding from the ceiling surface, and screw and tighten a nut onto the suspension bolt from the lower surface side of the appliance body 11, thereby attaching the appliance body 11 to the ceiling surface.

[0050] Move the light source unit 12 below the appliance body 11, raise the hook portions 69 of the pair of mounting springs 43 and hook them onto the pair of spring receivers 27, and make the light source unit 12 in a temporarily suspended state with respect to the appliance body 11.

[0051] Insert the power supply line into the connection hole 71 of the terminal block 44 through the gap between the appliance body 11 and the light source unit 12 and make an electrical connection.

[0052] By pushing up the light source unit 12 toward the appliance main body 11, the light source unit 12 is pulled up until the contact portion 63 of the light source cover 42 contacts the lower end portion of the side plate portion 21 of the appliance main body 11 by the spring force of the pair of mounting springs 43, and the light source unit 12 is attached to the appliance main body 11.

[0053] And in the installed lighting device 10, when external power is input to the power supply unit 45 through the terminal block 44, the power supply unit 45 converts the external power into lighting power, and supplies this lighting power to the light source substrate 61 through the pair of fixing members 80, and the light emitting element 62 of the light source substrate 61 lights up.

[0054] In the lighting device 10 configured in this way, the power supply substrate 73 is fixed to the light source substrate 61 by the fixing member 80 and electrically connected, and since the lighting power supplied from the power supply substrate 73 to the light source substrate 61 flows through the fixing member 80, wiring, connectors, etc. are not required, the number of parts can be reduced, and the wiring work of these parts is not required, improving the assemblability.

[0055] Further, since the fixing member 80 is disposed on the output portion 76 side opposite to the input portion 75 where the terminal block 44 of the power supply substrate 73 is disposed, the fixing member 80 does not interfere with the connection of the power supply line to the terminal block 44.

[0056] Further, the fixing member 80 can ensure insulation with respect to the chassis 40 by passing through the opening 59 of the chassis 40.

[0057] Note that insulation between the fixing member 80 and the chassis 40 may be ensured by disposing an insulating member between the fixing member 80 and the chassis 40, such as providing an insulating member around the fixing member 80.

[0058] Further, the fixing member 80 is composed of a fixing screw 81 and a terminal member 82, but the light source substrate 61 may be fixed to the power supply substrate 73 and electrically connected only by the fixing screw 81.

[0059] Alternatively, the terminal block 44 for connecting the power line may be disposed on the appliance main body 11. In this case, the terminal block 44 of the appliance main body 11 and the power supply unit 45 of the light source unit 12 are electrically connected using wiring and connectors.

[0060] Although some embodiments of the present invention have been described, these embodiments are presented by way of example 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 included in the invention described in the claims and its equivalent scope.

Explanation of Reference Numerals

[0061] 10 Lighting device 40 Chassis 45 Power supply unit 61 Light source substrate 62 Light emitting element 73 Power supply substrate 75 Input unit 76 Output unit 80 Fixing member

Claims

1. A light source substrate on which a light-emitting element is mounted; A power supply unit having a power supply substrate and outputting lighting power for lighting the light-emitting element; A fixing member that fixes and electrically connects the light source substrate and the power supply substrate, and supplies the lighting power output from the power supply substrate to the light source substrate; An illumination device comprising the above.

2. The power supply substrate has an input unit provided on one end side for inputting external power and an output unit provided on the other end side for outputting the lighting power, The fixing member is provided on the output unit side of the power supply substrate The illumination device according to claim 1, characterized in that.

3. A chassis is provided with the light source substrate on the front side and the power supply unit on the back side, The fixing member is insulated from the chassis The illumination device according to claim 1 or 2, characterized in that.

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