Illumination device

Abstract

To provide an illumination device which can be saved in size and weight.SOLUTION: An illumination device 10 includes a base 16, a light source 17 provided in a lower surface side of the base 16, a power supply unit 19 provided in an upper surface side of the base 16 and smaller than the base 16 in a plan view, and an arm 12 connected to the power supply unit 19.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] SUMMARY OF THE DISCLOSURE The present invention relates to a lighting device. [Background technology]

[0002] Conventionally, there is a lighting device for high ceilings that is used to illuminate spaces with high ceilings, such as factories, warehouses, and other facilities. This lighting device is configured by connecting an arm to a base on the underside of which a light source is disposed, and a power supply unit is attached to the arm, and is attached to the ceiling side by the arm. The arms are attached to both sides of the base, and are set to have approximately the same dimensions as the width of the base.

[0003] Since such lighting devices are installed at high altitudes, it is desirable for them to be small and lightweight. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-7112 Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a lighting device that can be made small and lightweight. [Means for solving the problem]

[0006] The lighting device of the embodiment comprises a base, a light source arranged on the underside of the base, a power supply unit having a power supply mounting portion arranged on the upper surface of the base and smaller than the base in a planar view, and an arm that is attached to the ceiling side and also to the upper surface side of the base. Effect of the Invention

[0007] The lighting device according to the embodiment can be made small and lightweight. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a plan view of a lighting device showing a first embodiment. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] FIG. 2 is a cross-sectional view of a portion of the lighting device. [Figure 6] FIG. 11 is a plan view of a lighting device showing a second embodiment. [Figure 7] FIG. 2 is a cross-sectional view of a portion of the lighting device. [Figure 8] FIG. 11 is a plan view showing a third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The first embodiment will be described below with reference to FIGS.

[0010] As shown in FIGS. 1 to 4, the lighting device 10 is a high ceiling lighting device used for illuminating spaces with high ceilings in, for example, factories, warehouses, and other facilities.

[0011] The lighting device 10 includes a light body 11 which is a lighting fixture, and an arm 12 which supports the light body 11 and is attached to the ceiling side.

[0012] The light body 11 comprises a base 16 which is the main body of the fixture and a heat sink, a light source 17 disposed on the underside of the base 16, a cover 18 which covers the light source 17 and is attached to the base 16, and a power supply unit 19 disposed on the upper side of the base 16.

[0013] The base 16 is formed of a metal plate. The base 16 has a flat rectangular base plate portion 23, for example a square, and the four sides of the base plate portion 23 are provided with rising portions 24 bent upward. Two opposing sides of one side of the base plate portion 23 are provided with fall prevention portions 25 for preventing the cover 18 attached to the base 16 from falling. As shown in Figs. 3 and 5, the fall prevention portion 25 is cut and raised from the center of the width direction of the rising portion 24, bent toward the lower side of the base plate portion 23 in a substantially U-shape, and disposed opposite the lower surface side of the base plate portion 23 with a predetermined gap therebetween. The tip side of the fall prevention portion 25 is formed in an arc shape. In addition, a wiring hole is provided in the center of the base plate portion 23 through which an electric wire for electrically connecting the light source 17 and the power supply portion 19 is inserted.

[0014] Further, a light emitting module 29 is used for the light source 17. The light emitting module 29 has a rectangular substrate 30 and a plurality of light emitting elements 31 mounted on the front surface side of the substrate 30. The light emitting elements 31 are semiconductor light emitting elements such as LEDs and organic EL elements. The back surface side of the substrate 30 is disposed on the underside of the base plate portion 23 of the base 16, and is fixed to the base plate portion 23 with a number of screws. A wiring hole is provided in the center of the substrate 30, which is connected to the wiring hole of the base plate portion 23 and through which an electric wire is inserted to electrically connect the light source 17 and the power supply portion 19. Note that the light source 17 may be, for example, a lamp other than the light emitting module 29.

[0015] Moreover, the cover 18 is attached to the underside of the base 16, covering the light-emitting module 29. The cover 18 has a bottom surface 35, a side surface 36 provided around the periphery of the bottom surface 35, and a flange portion 37 protruding from the upper side of the side surface to the periphery. The entire cover 18 or at least the bottom surface side is translucent.

[0016] The side surface portion 36 has four arc-shaped corners, and a recess 38 is provided in the center of each side in the width direction.

[0017] Each side of the flange portion 37 has an engagement portion 39 that engages with the outer surface of the rising portion 24 of the base 16 to position the flange portion 37. The flange portions 37 on both sides facing each other are disposed in a state of being inserted into the gap between the fall prevention portions 25 on both sides of the base 16 and the base plate portion 23. With one flange portion 37 inserted into the gap between the fall prevention portion 25 and the base plate portion 23 to move the cover 18 to one side, the other flange portion 37 is opposed to the gap between the fall prevention portion 25 and the base plate portion 23, and the cover 18 is moved to the other side, so that the flange portions 37 on both sides are disposed in a state of being inserted into the gap between the fall prevention portions 25 on both sides of the base 16 and the base plate portion 23. The recessed portions 38 provided on the side portions 36 of the cover 18 are opposed to the fall prevention portions 25 on both sides of the base 16, so that the cover 18 can be moved to one side or the other. The four corners of the flange portion 37 are attached to the base plate portion 23 with screws 40.

[0018] The power supply unit 19 also has a power supply case 44 which is a power supply box, and a terminal block 45 and a power supply circuit 46 housed within the power supply case 44 .

[0019] The power supply case 44 is made of metal, and is attached to the center of the upper surface of the base plate portion 23 by screws or the like.

[0020] The power supply case 44 is rectangular and has a smaller outer shape than the base 16 in a plan view. In a plan view, each side of the power supply case 44 faces parallel to each side of the base 16, and both longitudinal sides of the power supply case 44 face both sides of the base 16 on which the drop prevention parts 25 are provided.

[0021] The power supply case 44 has an upper surface portion 47 and side surfaces 48, and the bottom surface side of the power supply case 44 is open. The side surfaces 48 have first side surfaces 48a on both sides in the longitudinal direction and second side surfaces 48b on both sides in the lateral direction. The opening on the bottom surface side of the power supply case 44 is closed by the base plate portion 23 when the power supply case 44 is attached to the base plate portion 23. The power supply case 44 may be configured as a hexahedron whose bottom surface side is also closed.

[0022] The terminal block 45 is attached to the power supply case 44 so as to face an opening provided in one of the second side surface portions 48b of the power supply case 44. A power supply line that supplies external power from an external power source such as a commercial AC power source is electrically connected to the terminal block 45.

[0023] The power supply circuit 46 has a board and power supply circuit components mounted on the board, and at least the board is attached in the power supply case 44 at a position shifted upward from the middle height position in the vertical direction of the power supply case 44. The power supply circuit 46 converts the external power supplied through the terminal block 45 into a predetermined lighting power and supplies it to the light-emitting module 29, thereby lighting the light-emitting element 31.

[0024] Moreover, the arm 12 is made of metal, is generally U-shaped, and is attached to the power supply unit 19. The arm 12 has a pair of arm attachment parts 52 attached to the power supply unit 19, an arm body 53 attached to the ceiling side, and an angle adjustment part 54 connecting the arm attachment parts 52 and the arm body 53 so that the angle can be adjusted.

[0025] The pair of arm attachment parts 52 are attached to the first side surface parts 48a on both longitudinal sides of the power supply unit 19 at the center positions in the width direction thereof by a plurality of screws 55. The upper ends of the arm attachment parts 52 are disposed so as to protrude upward beyond the power supply unit 19.

[0026] The arm body 53 has a long arm upper surface portion 56 attached to the ceiling side, and a pair of arm side portions 57 bent from both longitudinal ends of the arm upper surface portion 56, and is formed into a substantially U-shape. The arm upper surface portion 56 is provided with a pair of mounting holes 58 for mounting to the ceiling side. The pair of mounting holes 58 are arranged at a predetermined mounting pitch P for mounting to the ceiling side. One mounting hole 58 is a round hole, and the other mounting hole 58 is an elongated hole that is long in the width direction intersecting the longitudinal direction. A hole portion 59 is provided between the pair of mounting holes 58 in the center of the arm upper surface portion 56 to be used for inserting a power cord, etc.

[0027] Angle adjustment unit 54 connects arm mounting unit 52 and arm side surface portion 57 of arm body 53 arranged to overlap the outside of arm mounting unit 52 so as to be angle-adjustable. Angle adjustment unit 54 rotatably connects arm mounting unit 52 and arm side surface portion 57 of arm body 53 using a pivot bolt 60 passing through arm mounting unit 52 and arm side surface portion 57 of arm body 53 and a nut 61 screwed onto this pivot bolt 60, and also connects angle-adjustably using an adjustment bolt 62 passing through arm mounting unit 52 and arm side surface portion 57 of arm body 53 and a nut 63 screwed onto this adjustment bolt 62, etc. An arc-shaped elongated hole 64 is provided in the arm side portion 57 of the arm body 53, centered on the hole through which the pivot shaft bolt 60 is inserted, and the angle can be adjusted within the range in which the adjustment bolt 62 abuts against each longitudinal end of the elongated hole 64.

[0028] When the lighting device 10 is installed, the arm body 53 is attached to a structure on the ceiling side by bolts or the like inserted through the pair of mounting holes 58 of the arm body 53 .

[0029] The angle between the arm mounting part 52 and the arm body 53 is adjusted via the angle adjustment part 54 so that the light irradiation direction of the lamp body 11 is directly downward, and after this adjustment, the pivot bolt 60 and the adjustment bolt 62 of the angle adjustment part 54 are tightened to fix the arm mounting part 52 and the arm body 53 so that they cannot rotate.

[0030] The power line is connected to the terminal block 45 of the power supply unit 19, and the installation is completed.

[0031] When external power is supplied to the power supply unit 19, the power supply unit 19 supplies lighting power to the light-emitting module 29, causing the light-emitting element 31 to light up.

[0032] When illuminated, heat generated by the light emitting element 31 is mainly transferred to the base 16 and dissipated into the air from the base 16. Heat generated by the power supply circuit 46 is mainly transferred to the power supply case 44 and from the power supply case 44 to the arm 12 and dissipated from the power supply case 44 and the arm 12.

[0033] In the lighting device 10 configured in this manner, the arm 12 is connected to the power supply unit 19, which has an outer shape smaller than that of the base 16 in a plan view, so the length of the arm upper surface portion 56 can be shortened and the arm 12 can be made smaller and lighter than when the arm 12 is connected to both sides of the base 16. This allows the lighting device 10 to be made smaller and lighter, improving ease of installation when installed at high altitudes.

[0034] Furthermore, in order to make the power supply unit 19 smaller and lighter, when the power supply unit 19 is arranged to be rectangular in a plan view, by connecting the arms 12 to both longitudinal sides of the power supply unit 19, the mounting dimensions for attaching the arms 12 to the ceiling side can be secured; in other words, the dimensions for providing a pair of mounting holes 58 arranged at a predetermined mounting pitch can be secured.

[0035] Furthermore, the direction in which the light body 11 can be adjusted in angle intersects with the direction in which both ends of the arm 12 are connected, and is the direction in which the light body 11 is likely to swing. However, since the power supply unit 19 is positioned with its short side facing the direction in which the light body 11 is likely to swing, the center of gravity of the power supply unit 19 can be brought closer to the center, thereby suppressing swinging.

[0036] Furthermore, flange portion 37 of cover 18, which is attached to the underside of base 16 with screws 40, is disposed between base plate portion 23 and fall prevention portion 25. Therefore, even if the portion of flange portion 37 to which a load is applied due to fastening of screws 40 deteriorates and breaks, flange portion 37 can be supported by fall prevention portion 25, and cover 18 can be prevented from falling.

[0037] Next, a second embodiment is shown in FIG. 6 and FIG.

[0038] The power supply unit 19 has a power supply mounting portion 70 disposed on the upper surface side of the base 16. The power supply mounting portions 70 are provided on the side surface portion 48 of the power supply case 44, and are bent outward from the lower sides of the first side surface portions 48a on both longitudinal sides.

[0039] The arm mounting portion 52 is provided with an arm fixing portion 71 that is bent outward from the lower side of the arm mounting portion 52. The arm fixing portion 71 is disposed overlapping the upper surface side of the power supply mounting portion 70 that is disposed on the upper surface side of the base 16.

[0040] Then, the arm fixing portion 71, the power supply attachment portion 70, and the base 16 are fastened together by a plurality of fasteners, that is, screws 72, so that the arm 12 is connected to the power supply portion 19. The substrate 30 of the light emitting module 29 may also be fastened together by the screws 72.

[0041] By fastening the base 16, power supply unit 19, and arm 12 together as in this configuration, the number of parts and assembly steps can be reduced and manufacturability can be improved compared to a configuration in which each component is attached separately.

[0042] 8, power supply unit 19 may be provided in a square shape in plan view, so long as its outer shape is smaller than base 16 in plan view. Power supply unit 19 may be provided in a rectangular shape with a longer length in a direction intersecting the direction in which the arms of power supply unit 19 are connected, so long as its outer shape is smaller than base 16 in plan view and a dimension is ensured for providing a pair of mounting holes 58 arranged at a predetermined mounting pitch.

[0043] The angle adjustment unit 54 of the arm 12 may be disposed at a position to the side of the power supply unit 19.

[0044] 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, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0045] 10. Lighting Equipment 12 Arm 16 Base 17 Light source 19 Power supply section

Claims

1. Base and; a light source disposed on a lower surface of the base; a power supply unit having a power supply mounting portion disposed on an upper surface of the base and smaller than the base in a plan view; An arm attached to a ceiling side and to an upper surface side of the base; A lighting device comprising:

2. The arm, the power supply unit, and the base are fastened together so that the arm is connected to the power supply unit.

2. The lighting device according to claim 1.

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