JP2017021993A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of achieving cost reduction.SOLUTION: A lighting fixture comprises: a light source unit 5; a power supply circuit unit 4; and a circuit board 3. The light source unit 5 is provided in an outer region 33 of the circuit board 3 while the power supply circuit unit 4 is provided in an inner region 34 thereof. The outer region 33 is configured by a plurality of first regions 331 and a plurality of second regions 332 alternately adjacent to one another. A plurality of first light-emitting diodes 511 are disposed in the first regions 331. A plurality of second light-emitting diodes 512 are disposed in the second regions 332. A difference between a smallest distance and a largest distance, out of distances from the plurality of first light-emitting diodes 511 to a central portion 30 of the circuit board 3, is assumed as a first distance difference. A difference between a smallest distance and a largest distance, out of distances from the plurality of second light-emitting diodes 512 to the central portion 30 of the circuit board 3, is assumed as a second distance difference. The first distance difference is smaller than the second distance difference.SELECTED DRAWING: Figure 3

Description

  The present invention generally relates to a lighting fixture, and more particularly, to a lighting fixture including a power supply circuit unit that supplies lighting power to a light emitting diode.

  2. Description of the Related Art Conventionally, there is known a lighting fixture that includes a power supply circuit unit that is attached to a ceiling and supplies lighting power to a light emitting diode (see, for example, Patent Document 1). The lighting fixture described in Patent Document 1 is provided with a power feeding unit and a lighting circuit (power supply circuit unit) at the center of the fixture body, and LEDs (light emitting diodes) are arranged concentrically on the outside.

JP 2014-154461 A

  In the lighting fixture described in Patent Document 1, since the light emitting diodes are arranged concentrically, the substrate on which the light emitting diodes are provided is formed in an annular shape. In general, a substrate is configured by dividing a rectangular plate-shaped substrate sheet as a base material into a plurality of substrates. Therefore, when the substrate is annular, there is a problem that the number of substrates obtained from one substrate sheet is reduced and the cost is increased.

  This invention is made | formed in view of the said reason, The objective is to provide the lighting fixture which aims at reduction of cost.

  The lighting fixture of the present invention includes a light source unit having a group of light emitting diodes, a power circuit unit that supplies lighting power to the group of light emitting diodes, and a circuit board on which the light source unit and the power circuit unit are provided. The light source unit is provided in an outer region that is a peripheral region of the circuit board, the power supply circuit unit is provided in an inner region that is an inner region of the outer region, and the outer region is the circuit. A plurality of first regions and a plurality of second regions that are alternately adjacent in the circumferential direction of the substrate, and each of the plurality of first regions includes a plurality of first light emitting diodes among the group of light emitting diodes. In each of the plurality of second regions, a plurality of the group of light emitting diodes are disposed as second light emitting diodes, and each of the plurality of first light emitting diodes is Of the distances to the center part of the circuit board, the difference between the minimum distance and the maximum distance is defined as a first distance difference. A difference from the distance is defined as a second distance difference, and the first distance difference is smaller than the second distance difference.

  The present invention has an effect of reducing the cost.

It is a disassembled perspective view of the lighting fixture in embodiment. It is the bottom view of the lighting fixture which abbreviate | omitted the glove | globe and adapter in embodiment. It is a bottom view of the circuit board in an embodiment. It is a bottom view of the circuit board to which the power supply cover in the embodiment is attached. It is AA sectional drawing of FIG. 2 of the lighting fixture in embodiment. It is BB sectional drawing of FIG. 2 of the lighting fixture in embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, each figure demonstrated in the following embodiment is a typical figure, and ratio of each magnitude | size and thickness of each component does not necessarily reflect an actual dimensional ratio.

(Embodiment)
The exploded perspective view of the lighting fixture 1 of this embodiment is shown in FIG. 1, and the bottom view is shown in FIG. The luminaire 1 of the present embodiment is a luminaire that is attached to the ceiling 9 using the light-emitting diode 51 as a light source. The glove 16 is the main component. Below, the structure of the lighting fixture 1 of this embodiment is demonstrated in detail. In the present embodiment, the description will be made assuming that the ceiling 9 side is upward and the floor side is downward with respect to the lighting fixture 1.

  The ceiling 9 is provided with a hooking ceiling rosette 91 that is a power socket that supports the lighting fixture 1 and supplies power to the lighting fixture 1. The luminaire 1 includes a columnar adapter 11 that is electrically and mechanically connected to the hooking ceiling rosette 91.

  The instrument body 2 is made of metal, for example. The instrument main body 2 is formed in a disk shape, for example, and a circular through hole 21 through which the adapter 11 is passed is provided at a substantially central portion. A flat fixing member 12 is fixed to the lower surface of the instrument body 2 (the surface opposite to the surface facing the ceiling 9) using screws or the like. The fixing member 12 includes a cylindrical portion 122 having a through hole 121 having substantially the same diameter as the through hole 21 of the instrument body 2 and a flange 123 formed at the upper end of the cylindrical portion 122. In the fixing member 12, the flange 123 is fixed to the lower surface of the instrument main body 2 using screws or the like so that the through hole 121 of the cylindrical portion 122 is substantially concentric with the through hole 21 of the instrument main body 2. The adapter 11 is provided with two hooking claws 111 protruding from a part of the outer peripheral surface (outer surface). Each of the two hooking claws 111 protrudes from the outer peripheral surface of the adapter 11 in opposite directions. Thereby, the operator pushes up the instrument body 2 toward the ceiling 9 so as to pass the adapter 11 through the through-hole 21 of the instrument body 2, so that the hooking claw 111 of the adapter 11 has the lower end of the cylindrical portion 122 of the fixing member 12. The instrument body 2 is fixed to the ceiling 9. An elastic packing 13 is provided on the upper surface of the instrument body 2. The packing 13 is made of ester polyurethane foam. The packing 13 is sandwiched between the instrument body 2 and the ceiling 9, so that rattling of the instrument body 2 when the instrument body 2 is fixed to the ceiling 9 is suppressed.

  A protective cover 15 that protects the adapter 11 is provided below the fixing member 12. The protective cover 15 includes a cylindrical portion 152 having a through hole 151 having an inner diameter that is substantially the same as the outer diameter of the fixing member 12, and a flange 153 formed at the upper end of the cylindrical portion 152. In the protective cover 15, the flange 153 is fixed to the lower surface of the instrument body 2 using screws or the like so that the through hole 151 of the cylindrical portion 152 is substantially concentric with the through hole 21 of the instrument body 2. Thereby, the adapter 11 is surrounded by the protective cover 15 so that only the lower surface is exposed, and is protected by the protective cover 15.

  A circuit board 3 provided with a light source unit 5 and a power supply circuit unit 4 is attached to the lower surface of the instrument body 2. As shown in FIG. 3, the circuit board 3 is formed in a substantially rectangular plate shape whose corners are curved in an arc shape, and a substantially circular through hole 31 through which the protective cover 15 is passed is provided in a substantially central portion. . Specifically, the outer end surface 32 of the circuit board 3 is configured by alternately adjoining four flat surfaces 321 and four arc surfaces 322. The area of the lower surface of the circuit board 3 is composed of an outer area 33, an inner area 34, and an intermediate area 35. In FIG. 3, the boundaries of the outer region 33, the inner region 34, and the intermediate region 35 are indicated by two-dot chain lines. The outer region 33 is a peripheral region in the circuit board 3. In the present embodiment, the “peripheral region in the circuit board 3” is a region on the edge side of the circuit board 3, and in this embodiment, a substantially rectangular annular shape provided along the outer end surface 32 of the circuit board 3. It is an area. The inner region 34 is an annular region provided along the edge of the through hole 31 inside the outer region 33. The intermediate region 35 is a region between the outer region 33 and the inner region 34.

  The power supply circuit unit 4 is provided in the inner region 34. The power supply circuit unit 4 includes a plurality of circuit elements 41 (for example, resistors, capacitors, inductors, switching elements, and the like) and a conductor that electrically connects each of the plurality of circuit elements 41. In addition, the conductor of the power supply circuit part 4 is comprised by a part of conductor of the circuit board 3 which is a printed circuit board. The power supply circuit unit 4 includes a connector to which one end of a power cable is connected. One end of the power cable is electrically connected to the power supply circuit unit 4, and the other end is electrically connected to the adapter 11. As a result, the power supply circuit unit 4 is electrically connected to the adapter 11 via the power cable, and generates lighting power for lighting the group of light-emitting diodes 51 included in the light source unit 5 from the power supplied via the adapter 11. To do. The inner region 34 is provided with a light receiving unit 42 that receives an infrared signal from a remote controller that is an operating device of the lighting fixture 1. A case 43 is provided in the inner region 34 of the circuit board 3, and the light receiving portion 42 is disposed inside the opening 44 of the case 43 in plan view (bottom view) (see FIG. 4).

  In the outer region 33, the light source unit 5 is provided. The light source unit 5 includes a group of light emitting diodes 51 and a conductor that electrically connects each of the group of light emitting diodes 51. The light-emitting diode 51 is a surface-mounted light-emitting diode, for example, whose emission color is white. Note that the light emission color of the light emitting diode 51 is not limited to white, and may be, for example, a light bulb color. Moreover, the conductor of the light source part 5 is comprised by a part of conductor of the circuit board 3 which is a printed circuit board. The group of light-emitting diodes 51 constituting the light source unit 5 are arranged in a ring shape in the outer region 33 side by side in the circumferential direction of the circuit board 3 (direction along the outer end face 32 of the circuit board 3). In the present embodiment, the group of light emitting diodes 51 are arranged in a double ring shape.

  The outer region 33 includes four first regions 331 and four second regions 332 that are alternately adjacent in the circumferential direction of the circuit board 3, and the four first regions 331 and the four second regions. A plurality of light emitting diodes 51 are arranged in each of 332. In FIG. 3, the boundary between the first region 331 and the second region 332 is indicated by a two-dot chain line. Hereinafter, the light emitting diode 51 disposed in the first region 331 is referred to as a first light emitting diode 511, and the light emitting diode 51 disposed in the second region 332 is referred to as a second light emitting diode 512.

  Each of the first regions 331 is an arcuate (curved) region centered on the central portion 30 of the circuit board 3, and is provided along the arcuate surface 322 on the outer end surface 32 of the circuit board 3. The “central portion 30 of the circuit board 3” is a center position in a region where the circuit board 3 and the through hole 31 provided in the circuit board 3 are combined. In the present embodiment, the center of the through hole 31 is defined. Indicates the position. In each of the first regions 331, a plurality of first light emitting diodes 511 are arranged in an arc shape in the circumferential direction of the circuit board 3.

  Each of the second regions 332 is a linear region and is provided along the flat surface 321 of the outer end surface 32 of the circuit board 3. A plurality of second light emitting diodes 512 are arranged in a straight line in the circumferential direction of the circuit board 3 in each of the second regions 332.

  That is, the outer region 33 is formed of a four-region first region 331 that is formed in an arc shape and four second regions 332 that are formed in a linear shape, and is formed in a substantially rectangular annular shape whose corners are curved in an arc shape. ing. A group of light-emitting diodes 51 constituting the light source unit 5 are arranged in a substantially rectangular annular shape whose corners are curved in an arc shape.

  Here, the difference between the minimum distance and the maximum distance among the distances from the plurality of first light emitting diodes 511 arranged in the first region 331 to the center portion 30 of the circuit board 3 is defined as the first distance difference. . That is, the first distance difference is the difference between the first light-emitting diode 511 closest to the center 30 of the circuit board 3 and the first light-emitting diode 511 farthest from the center 30 of the circuit board 3. It is the difference of the distance to.

  Further, the difference between the minimum distance and the maximum distance among the distances from the plurality of second light emitting diodes 512 arranged in the second region 332 to the central portion 30 of the circuit board 3 is defined as a second distance difference. In other words, the second distance difference is the difference between the second light emitting diode 512 closest to the center portion 30 of the circuit board 3 and the second light emitting diode 512 farthest from the center portion 30 of the circuit board 3. It is the difference of the distance to.

  Since the first area 331 is an arc-shaped area centered on the central portion 30 of the circuit board 3 and the second area 332 is a linear area, the first distance difference is larger than the second distance difference. Get smaller. Further, the outer region 33 is formed of a substantially rectangular ring having four first regions 331 and four second regions 332 that are alternately adjacent to each other and whose corners are curved in an arc shape. Accordingly, the average value of the distances from the plurality of first light emitting diodes 511 arranged in the first region 331 to the central portion 30 is the center from each of the plurality of second light emitting diodes 512 arranged in the second region 332. It becomes larger than the average value of the distance to the part 30.

  The circuit board 3 is provided with a power supply cover 6 that covers the power supply circuit unit 4 and a light source cover 7 that has translucency and covers the light source unit 5.

  The power supply cover 6 is preferably made of metal. The power supply cover 6 is formed in a bowl shape having an open upper surface, and has a flange 61 at the upper end. The power source cover 6 has a flange 61 facing the intermediate region 35 between the inner region 34 and the outer region 33 of the circuit board 3 so that the power source cover 6 does not come into contact with the plurality of circuit elements 41 constituting the power circuit unit 4. The circuit unit 4 is provided so as to cover from below. The power supply cover 6 is provided with a through hole 62 in the bottom wall so that the lower surface of the adapter 11 is exposed. This makes it easier for the operator to connect the end of the power cable to the adapter 11 through the through hole 62. Further, the power supply cover 6 is provided with a notch 63 so as to avoid the case 43 provided in the inner region 34. This prevents the light receiving portion 42 from being covered by the metal power source cover 6.

  The light source cover 7 is formed in a disk shape provided with a through hole 71 through which the power supply cover 6 is passed in a substantially central portion. The light source cover 7 has a space between the upper surface of the bottom wall of the light source cover 7 and the circuit board 3 by four spacers 72 formed so as to protrude upward from the bottom wall, and the light source cover 7 does not contact the light emitting diode 51. It is provided so as to cover the part 5 from below (see FIGS. 2 and 6). The light source cover 7 is integrally provided with a light receiving cover portion 73 that protrudes from the edge of the through hole 71 and covers the case 43. The light receiving cover portion 73 is made of a material that transmits the infrared signal of the remote controller, and the light receiving portion 42 can receive the infrared signal from the remote controller through the light receiving cover portion 73.

  Next, a configuration for positioning and fixing each of the circuit board 3, the power source cover 6, and the light source cover 7 will be described.

  The circuit board 3 is positioned by a notch 36 provided on the outer end face 32 of the circuit board 3 and a convex part 22 (see FIG. 1) provided on the instrument body 2. On the outer end face 32 of the circuit board 3, arc-shaped notches 36 are provided on each of a pair of flat surfaces 321 facing each other. In addition, the instrument body 2 is provided with a pair of flat cylindrical protrusions 22 that protrude downward. Then, each of the pair of cutout portions 36 of the circuit board 3 is fitted into the convex portion 22 of the instrument body 2, whereby the circuit board 3 and the instrument body 2 are positioned.

  The power supply cover 6 is positioned by the convex portion 64 provided in the flange 61 and the positioning hole 37 provided in the circuit board 3 (see FIG. 5). The flange 61 is provided with four hemispherical convex portions 64 protruding upward. The circuit board 3 is provided with four positioning holes 37 penetrating in a circular shape in an intermediate region 35 between the inner region 34 and the outer region 33. Then, the four convex portions 64 provided on the flange 61 of the power supply cover 6 are fitted into the positioning holes 37 of the circuit board 3, whereby the power supply cover 6 and the circuit board 3 are positioned.

  The light source cover 7 is positioned by the convex portions 74 provided in the spacer 72 and the positioning holes 38 provided in the circuit board 3 (see FIG. 6). Two of the four spacers 72 included in the light source cover 7 are provided with convex portions 74 that protrude upward from the tip (upper end). The circuit board 3 is provided with two positioning holes 38 penetrating in a circular shape in the outer region 33. The instrument body 2 is provided with a recess 23 at a position facing each of the positioning holes 38 of the circuit board 3. And each convex part 74 provided in the spacer 72 of the light source cover 7 is fitted into the positioning hole 38 of the circuit board 3, whereby the light source cover 7 and the circuit board 3 are positioned.

  The light source cover 7 has a flange 75 that faces the flange 61 of the power source cover 6. The flange 75 of the light source cover 7, the flange 61 of the power supply cover 6, the intermediate region 35 of the circuit board 3, and the instrument body 2 are respectively inserted into the insertion hole 76, the insertion hole 65, the insertion hole 39, and the screw hole 24 ( 4) are provided. Then, the screw 8 is inserted into the insertion hole 76, the insertion hole 65, and the insertion hole 39 and coupled to the screw hole 24, whereby the circuit board 3, the power supply cover 6, and the light source cover 7 are fixed to the instrument body 2. The Specifically, the screw 8 is a so-called half screw and includes a head portion 81, a flange 82, a shaft portion 83, and a coupling portion 84. The flange 82 is provided at the upper end of the head 81. The shaft portion 83 is a cylinder protruding from the upper surface of the head 81. The coupling portion 84 is a cylinder protruding from the upper end of the shaft portion 83, and a thread groove is provided on the peripheral surface. Further, the diameter of the coupling portion 84 is smaller than the diameter of the shaft portion 83. Then, the screw 8 is coupled to the screw hole 24 through the insertion hole 76, the insertion hole 65, and the insertion hole 39. As a result, the power supply cover 6 and the circuit board 3 are sandwiched between the upper end of the shaft 83 of the screw 8 and the instrument main body 2, and the circuit board 3 and the power supply cover 6 are fixed to the instrument main body 2. Further, the circuit board 3 and the light source cover 7 are sandwiched between the flange 82 of the screw 8 and the instrument body 2, and the light source cover 7 is fixed to the instrument body 2. The upper end of the shaft portion 83 of the screw 8 is in contact with the power source cover 6, and the coupling portion 84 is in contact with the device main body 2, whereby the power source cover 6 and the device main body 2 are electrically connected via the metal screw 8. Is done. Further, serrations are provided on the upper surface of the flange 82, and the flange 82 comes into contact with the light source cover 7, so that the screws 8 are prevented from loosening.

  In addition, three attachment members 14 are provided on the lower surface of the instrument body 2, and a dome-shaped glove 16 is attached to the instrument body 2 via the attachment member 14.

  As described above, the lighting fixture 1 of the present embodiment includes the light source unit 5 having the group of light emitting diodes 51, the power supply circuit unit 4 that supplies lighting power to the light source unit 5, and the light source unit 5 and the power supply circuit unit 4. And a circuit board 3 to be provided. The light source unit 5 is provided in an outer region 33 that is a peripheral region of the circuit board 3. The power supply circuit unit 4 is provided in an inner region 34 that is an inner region of the outer region 33. The outer region 33 includes a plurality of first regions 331 and a plurality of second regions 332 that are alternately adjacent in the circumferential direction of the circuit board 3. In each of the plurality of first regions 331, a plurality of light emitting diodes 51 constituting the light source unit 5 are arranged as the first light emitting diodes 511. In each of the plurality of second regions 332, a plurality of the light emitting diodes 51 constituting the light source unit 5 are arranged as the second light emitting diodes 512. Among the distances from the plurality of first light emitting diodes 511 to the central portion 30 of the circuit board 3, the difference between the minimum distance and the maximum distance is defined as a first distance difference. Among the distances from the plurality of second light emitting diodes 512 to the central portion 30 of the circuit board 3, the difference between the minimum distance and the maximum distance is defined as a second distance difference. The first distance difference is smaller than the second distance difference.

  The outer region 33 includes four first regions 331 and four second regions 332. The first region 331 is a curved region value, and the second region 332 is a linear region. is there. Further, the first region 331 is an arc-shaped region centered on the central portion 30 of the circuit board 3.

  With the above configuration, the outer region 33 in which the group of light-emitting diodes 51 are arranged is formed in a substantially rectangular annular shape whose corners are curved in an arc shape, and the circuit board 3 is also in a substantially rectangular shape whose corners are curved in an arc shape. It becomes possible. Generally, the circuit board 3 is configured by dividing a rectangular plate-shaped substrate sheet as a base material into a plurality of parts. In the circuit board 3 of the present embodiment, the outer end surface 32 is formed in a substantially rectangular shape in which four flat surfaces 321 and four arc surfaces 322 are alternately adjacent. Therefore, since the surplus part of a board | substrate sheet | seat decreases, the reduction of the number of circuit boards 3 obtained from one board | substrate sheet | seat is suppressed, and it becomes possible to aim at reduction of cost. In addition, the processing time for taking out the circuit board 3 from the board sheet in the factory can be shortened, and the size of the board sheet can be reduced.

  Further, the outer region 33 where the light source unit 5 is provided in the circuit board 3 is configured by a plurality of first regions 331 and a plurality of second regions 332 that are alternately adjacent in the circumferential direction of the circuit substrate 3. The first region 331 and the second region 332 are configured such that the first distance difference is smaller than the second distance difference. Therefore, the average value of the distance from each of the plurality of first light emitting diodes 511 arranged in the first region 331 to the center portion 30 is the center value 30 from each of the plurality of second light emitting diodes 512 arranged in the second region 332. It becomes larger than the average value of the distance to. Thereby, the light emitted from the first light emitting diode 511 disposed in the first region 331 located away from the central portion 30 of the circuit board 3 is blocked by the power supply cover 6 provided in the inner region 34. It is suppressed. Therefore, it is possible to reduce luminance unevenness on the irradiation surface of the globe 16.

  Here, a configuration in which a plurality of light emitting diodes are arranged in an annular shape on an annular circuit board is referred to as a first comparative example. Since the circuit board of the first comparative example is annular, there are many surplus parts of the board sheet. Accordingly, the number of circuit boards of the first comparative example obtained from one board sheet is reduced as compared with the number of circuit boards 3 of the present embodiment, and the size of the board sheet is increased, resulting in an increase in cost.

  In addition, in consideration of the number of circuit boards taken from the board sheet, a configuration in which a group of light emitting diodes are arranged in a rectangular circuit board having a right angle on a rectangular circuit board having a right angle is provided as a second comparative example. To do. In the second comparative example, the distance from the light emitting diode arranged near the corner of the circuit board to the center of the circuit board is long, and the vicinity of the center of the irradiation surface of the globe is dark. Therefore, in the second comparative example, the luminance unevenness on the irradiation surface of the globe 18 is larger than that of the lighting fixture 1 of the present embodiment.

  In the present embodiment, the inner region 34 where the power supply circuit unit 4 is provided is formed in a circular shape, and the outer region 33 where the light source unit 5 is provided is formed in a substantially rectangular shape. An intermediate region 35 is provided therebetween. An insertion hole 39 through which a screw 8 for fixing the circuit board 3 to the instrument body 2 is inserted is provided in the intermediate region 35. Therefore, the space on the circuit board 3 can be used effectively.

  Further, in the present embodiment, the light source unit 5 having the group of light emitting diodes 51 and the power supply circuit unit 4 for supplying lighting power to the light source unit 5 are provided on the same circuit board 3. Therefore, in this embodiment, a plurality of substrates and connection lines for connecting the substrates are not necessary, and the number of components can be reduced.

  In addition, since the first light emitting diode 511 is disposed away from the power supply circuit unit 4, it is possible to suppress the temperature rise of the first light emitting diode 511 and the power supply circuit unit 4.

  The lighting fixture 1 of the present embodiment further includes a power supply cover 6 that covers the power supply circuit unit 4. With the above configuration, even when noise is radiated from the power supply circuit unit 4, it is possible to suppress the noise by the power supply cover 6. In addition, the operator is prevented from touching the circuit elements 41 constituting the power supply circuit unit 4 and safety is improved.

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made according to design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course, it can be changed.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 3 Circuit board 33 Outer area | region 331 1st area | region 332 2nd area | region 34 Inner area | region 4 Power supply circuit part 5 Light source part 51 Light emitting diode 511 1st light emitting diode 512 2nd light emitting diode 6 Power supply cover

Claims (4)

A light source unit having a group of light emitting diodes;
A power supply circuit section for supplying lighting power to the group of light emitting diodes;
A circuit board provided with the light source unit and the power supply circuit unit,
The light source unit is provided in an outer region which is a peripheral region in the circuit board,
The power supply circuit unit is provided in an inner region that is an inner region than the outer region,
The outer region includes a plurality of first regions and a plurality of second regions that are alternately adjacent in the circumferential direction of the circuit board, and each of the group of first regions includes a group of light emitting diodes. A plurality of light emitting diodes are arranged as first light emitting diodes, and a plurality of the light emitting diodes are arranged as second light emitting diodes in each of the plurality of second regions.
Of the distances from the plurality of first light emitting diodes to the center of the circuit board, the difference between the minimum distance and the maximum distance is a first distance difference,
Of the distances from each of the plurality of second light emitting diodes to the central portion, the difference between the minimum distance and the maximum distance is a second distance difference,
The first distance difference is smaller than the second distance difference. The outer region is composed of four first regions and four second regions,
The first region is a curved region;
The lighting apparatus according to claim 1, wherein the second area is a linear area. The lighting apparatus according to claim 2, wherein the first area is an arc-shaped area centered on the central portion. The lighting apparatus according to claim 1, further comprising a power supply cover that covers the power supply circuit unit.

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