JP2019145344A - Luminaire - Google Patents

Abstract

To provide a luminaire for easily securing rigidity of an arm while suppressing a fitted part such as a ceiling from being discolored.SOLUTION: A luminaire includes: a light source unit having a light source; a power source unit supplying a power source to the light source; and an arm holding the light source unit and the power source unit. The arm has a fitting part fitted to the fitted part, and an arm part connected to the fitting part and extending from the fitting part to a light source side. The arm part has a light source holding part provided at a tip side with a fitting part side as the base end, and holding the light source unit, and a power source holding part provided between the fitting part and the light source holding part, and holding the lateral face of the power source unit.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lighting fixture including an arm that holds a light source unit and a power supply unit.

  Conventionally, lighting fixtures attached to a ceiling or a beam are known. In addition, lighting fixtures that are suspended from a high ceiling are known. As these lighting fixtures, lighting fixtures having an arm for holding a light source unit and a power supply unit have been proposed. Patent Document 1 discloses a lighting fixture in which both side surfaces of a power supply unit in which a power supply board is housed and both side surfaces of a light source unit on which an LED is placed are fixed by U-shaped arms. In Patent Document 1, the power supply unit and the light source unit are screwed to the arm at the same location. Patent Document 2 discloses a lighting fixture in which a light source unit is held by an arm and the power unit is held between the arm and the ceiling. The arm part of the arm has a fixed part attached to the ceiling and a support part that supports and thermally connects the bottom surface of the power supply unit, and the light source unit is supported at the tip of the arm part. The power supply unit has an upper surface in contact with the ceiling and is thermally connected to the ceiling.

JP 2017-191754 A JP 2017-195035 A

  However, in the luminaire disclosed in Patent Document 1, the load concentrates on the arm attachment portion provided on one side of the end portion of the arm to which the light source unit is attached. In order to avoid this, if the arm attachment portion is increased to two places on one side, the function of the long hole for angle adjustment formed in the arm attachment portion is lost, and the angle of the light source unit cannot be adjusted. Moreover, since the lighting fixture disclosed by patent document 2 has pinched | interposed the power supply unit with the ceiling and the support part of the arm, there exists a possibility that the location where the upper surface of the power supply unit is contacting among the ceiling may change color.

  The present invention has been made in order to solve the above-described problems, and provides a lighting apparatus that simply secures the rigidity of an arm while suppressing discoloration of a mounted portion such as a ceiling. .

  A lighting fixture according to the present invention includes a light source unit having a light source, a power supply unit that supplies power to the light source, and an arm that holds the light source unit and the power supply unit, and the arm is an attachment portion that is attached to the attachment portion. And an arm portion connected to the attachment portion and extending from the attachment portion to the light source side, and the arm portion is provided on the distal end side with the attachment portion side as a base end, and a light source holding portion for holding the light source unit, A power supply holding portion that is provided between the attachment portion and the light source holding portion and holds a side surface of the power supply unit.

  According to the present invention, since the power supply holding portion of the arm holds the side surface of the power supply unit, it is not necessary to sandwich the power supply unit between the attached portion such as the ceiling and the arm. For this reason, it can suppress that a to-be-attached part discolors. Further, the light source unit and the power supply unit are respectively held by the light source holding unit and the power supply holding unit which are different positions of the arm. For this reason, a load does not concentrate on one specific place of the arm. Therefore, the rigidity of the arm can be easily secured.

It is an assembly perspective view which shows the lighting fixture 1 which concerns on Embodiment 1 of this invention. It is an assembly perspective view which shows the lighting fixture 1 which concerns on Embodiment 1 of this invention. It is a top view which shows the lighting fixture 1 which concerns on Embodiment 1 of this invention. It is a side view from one direction which shows the lighting fixture 1 which concerns on Embodiment 1 of this invention. It is a side view from the other direction which shows the lighting fixture 1 which concerns on Embodiment 1 of this invention. It is a perspective view which shows the state from which the light source unit 40 was removed from the arm 11 in Embodiment 1 of this invention. FIG. 3 is a perspective view showing a state where the light source unit 40 and the power supply unit 20 are detached from the arm 11 in Embodiment 1 of the present invention. It is a perspective view which shows the arm 11 which concerns on Embodiment 1 of this invention. It is a disassembled perspective view of the power supply unit 20 which concerns on Embodiment 1 of this invention. It is a disassembled perspective view which shows the lighting fixture 1 which concerns on Embodiment 1 of this invention. It is a perspective view which shows the fin unit 30a which concerns on Embodiment 1 of this invention. It is a perspective view which shows the fin 31 which concerns on Embodiment 1 of this invention. It is a top view which shows the arrangement place of the fin unit 30a which concerns on Embodiment 1 of this invention. It is a disassembled perspective view which shows the light source unit 40 which concerns on Embodiment 1 of this invention. It is a perspective view which shows the illuminating device 1a which concerns on Embodiment 1 of this invention. It is a perspective view which shows the arm 111 which concerns on Embodiment 2 of this invention. It is a perspective view which shows the state from which the light source unit 40 was removed from the arm 11 in Embodiment 3 of this invention.

Embodiment 1 FIG.
Hereinafter, embodiments of a lighting apparatus according to the present invention will be described with reference to the drawings. FIG. 1 is an assembled perspective view showing a lighting fixture 1 according to Embodiment 1 of the present invention, and FIG. 2 is an assembled perspective view showing the lighting fixture 1 according to Embodiment 1 of the present invention. FIG. 2 is an assembled perspective view when viewed from an angle different from that in FIG. 1. FIG. 3 is a top view showing the luminaire 1 according to Embodiment 1 of the present invention. 4 is a side view from one direction showing the lighting fixture 1 according to Embodiment 1 of the present invention, and FIG. 5 is a side view from the other direction showing the lighting fixture 1 according to Embodiment 1 of the present invention. FIG. As shown in FIGS. 1 to 5, the lighting fixture 1 includes a light source unit 40 and an arm unit 10. The arm unit 10 includes an arm 11 attached to a mounted portion such as a ceiling or a beam, and a power supply unit 20 that supplies power to the light source 42.

  FIG. 6 is a perspective view showing a state in which the light source unit 40 is detached from the arm 11 in the first embodiment of the present invention, and FIG. 7 shows the light source unit 40 and the power supply unit 20 in the first embodiment of the present invention. 3 is a perspective view showing a state where the arm 11 is detached. FIG. As shown in FIG. 6, the side surface of the light source unit 40 is held by the light source holding portion 11 d of the arm 11. As shown in FIG. 7, the side surface of the power supply unit 20 is held by the power supply holding portion 11 c of the arm 11.

(Arm 11)
FIG. 8 is a perspective view showing the arm 11 according to Embodiment 1 of the present invention. As shown in FIG. 8, the arm 11 is a member formed into a U shape by bending a sheet metal, for example, and is made of a galvanized steel plate or stainless steel. The arm 11 has an attachment part 11a attached to the attachment part and an arm part 11b which is a pair of members connected to the attachment part 11a and extending from both ends of the attachment part 11a to the light source 42 side. The attachment portion 11a and the arm portion 11b are integrally formed. The attachment portion 11a is a plate-like member extending in one direction, and arm attachment holes 11e for screwing the attachment portion to both ends are formed. Further, at least one arm mounting hole 11e is provided with a through hole 11j into which the electric wire 26 is inserted. By inserting the electric wire 26 into the through hole 11j, the electric wire 26 functions to prevent the lighting fixture 1 from falling. Further, the through hole 11j functions as a tension stopper for the electric wire 26.

  The arm portion 11b includes a light source holding portion 11d provided on the distal end side with the attachment portion 11a side as a base end, and a power supply holding portion 11c provided between the attachment portion 11a and the light source holding portion 11d. The light source holding part 11d holds the light source unit 40 rotatably, and includes a fulcrum part 11h and a guide part 11i. The fulcrum portion 11h serves as a fulcrum for rotation of the light source unit 40, and is, for example, a round hole. The guide part 11i extends downward from the horizontal position of the fulcrum part 11h, guides the rotation of the light source unit 40, and is an arc-shaped long hole. That is, the fulcrum part 11h and the upper end of the guide part 11i are at the same position in the horizontal direction. Angle adjustment bolts 13 (see FIG. 7) are inserted into the fulcrum part 11h and the guide part 11i, respectively, and screwed into the main body frame 33 of the light source unit 40.

  When the lighting fixture 1 is attached at a right angle to the attached portion, the lighting fixture 1 is screwed together with the angle adjusting bolt 13 inserted into the upper end of the guide portion 11i. Since the fulcrum part 11h and the upper end of the guide part 11i are at the same position in the horizontal direction, the luminaire 1 is held at a position perpendicular to the attached part. In addition, since the angle adjustment bolt 13 is located at the upper end of the guide part 11i, even if the angle adjustment bolt 13 is loosened, the position of the angle adjustment bolt 13 does not change. For this reason, the arm 11 can keep the light source unit 40 horizontal.

  When the luminaire 1 is attached to be inclined with respect to the attachment portion, the angle adjustment bolt 13 is loosened before the attachment, and after the angle of the arm 11 is adjusted, the angle adjustment bolt 13 is securely fixed. In this case, they are screwed together with the angle adjusting bolt 13 inserted below the upper end of the guide portion 11i. Thereby, the lighting fixture 1 rotates and it is screwed together in the state which the lighting fixture 1 inclined with respect to the to-be-attached part. Since the light source holding part 11d is composed of a fulcrum part 11h and a guide part 11i positioned in the horizontal direction, the light source unit 40 is held in a distributed manner in the horizontal direction, which is the short direction of the arm part 11b. . For this reason, a load can be disperse | distributed. Therefore, the horizontal vibration resistance of the light source unit 40 can be improved as compared with the case where the angle adjusting bolts 13 are arranged in parallel in the vertical direction.

  The power supply holding part 11c is provided at an intermediate position of the arm part 11b, and sandwiches both side surfaces of the power supply unit 20. A cut-and-raised piece 11g that holds the bottom surface of the power supply unit 20 and a fastening hole 11f into which a power supply mounting screw 12 that fixes the side surface of the power supply unit 20 is inserted are formed in the power supply holding portion 11c.

(Power supply unit 20)
FIG. 9 is an exploded perspective view of the power supply unit 20 according to Embodiment 1 of the present invention. As shown in FIG. 9, the power supply unit 20 converts the power of commercial power supplied from the outside into direct current power and supplies it to the light source module 41. The power supply unit 20 includes an internal component having a power supply board and a power supply terminal block 24 and a case 21 for storing the internal component. An internal component power supply board (not shown) supplies power to the light source module 41. The internal component power terminal block 24 is a terminal to which an electric wire 26 from a commercial power source is connected.

  The case 21 is a box-like member formed by bending a sheet metal, and the material is aluminum or the like. Thereby, weight reduction can be achieved. The case 21 has a case bottom 23 on the bottom surface side and a case top 22 on the upper surface side, and the case top 22 is overlapped on the case bottom 23 to form the case 21. The case bottom 23 and the case top 22 are fastened together with the arm 11 by the power supply mounting screw 12 on each side surface. Thereby, the screws for fixing the case bottom 23 and the case top 22 can be reduced, and the rigidity of the case 21 can be ensured.

  In the case bottom 23, a power supply substrate, a power supply terminal block 24, and the like are placed. A slit 21c is formed on the bottom surface of the case bottom 23, and the cut-and-raised piece 11g of the power supply holding portion 11c is inserted (see FIG. 7). Thereby, the power holding unit 11c holds the power unit 20. Thus, since the cut and raised piece 11g is inserted into the slit 21c and hooked to hold the power supply unit 20, the screws necessary for assembly can be reduced. A part of the case top 22 is cut and raised to form an opening 21b. The cut and raised portion becomes a shielding portion 21a having a function of eaves covering the opening 21b. The power terminal block 24 is exposed from the opening 21b, and the electric wire 26 is inserted into the opening 21b. The shielding portion 21a covers the upper surface side of the opening 21b, thereby preventing dust and the like from adhering to the power terminal block 24.

  Here, the positional relationship between the power supply unit 20 and the light source holding part 11d of the arm 11 will be described. In the light source holding part 11d, the distance between the shielding part 21a and the fulcrum part 11h is shorter than the distance between the shielding part 21a and the guide part 11i. In other words, the guide portion 11i is formed on the other side surface opposite to the one side surface of the power supply unit 20 where the shielding portion 21a is formed. Thereby, when the angle of the light source unit 40 is adjusted, the shielding part 21a faces the floor side. Accordingly, it is possible to prevent dust or the like falling from the upper surface side from entering the power terminal block 24 from the opening 21b.

  Next, a procedure for attaching the side surface of the power supply unit 20 to the arm 11 will be described. First, the power supply unit 20 is disposed inside the arm 11 and on the attachment portion 11a side. Next, the cut-and-raised piece 11 g of the arm 11 is hooked and fitted into the slit 21 c of the power supply unit 20. Then, the arm 11 and the side surface of the power supply unit 20 are fastened together by the power supply mounting screw 12. Thus, by attaching the power supply unit 20 to the arm 11 to configure the arm unit 10, the substantially box-shaped power supply unit 20 functions as a reinforcing material for the arm 11. Therefore, the rigidity and strength of the arm unit 10 can be improved.

  FIG. 10 is an exploded perspective view showing the lighting fixture 1 according to Embodiment 1 of the present invention. As shown in FIG. 10, the light source unit 40 includes a heat sink 30, a main body frame 33, a light source module 41, a lens module 50, a cover 60, and a fall prevention unit 70. The main body frame 33 is a pair of plate members and is attached to the light source holding portion 11 d of the arm 11. The main body frame 33 is a plate material having strength such as a galvanized steel plate or stainless steel, and one end thereof is bent to form a flange 33b. The flange 33 b is attached to the base plate 32 of the heat sink 30, and a reinforcing rib 33 a that assists the strength of the main body frame 33 is provided at the bent portion.

(Heat sink 30)
The heat sink 30 includes a base plate 32 to which the light source module 41 is attached on one surface, and a fin unit 30 a that is attached to the other side of the base plate 32 and dissipates heat generated from the light source module 41. The base plate 32 is formed in a U shape by bending both ends of the sheet metal, and the material is aluminum or the like. The flange 33b of the main body frame 33 is attached to the two sides of the base plate 32 that are not bent. Base mounting holes 32 c are formed at four corners of the base plate 32. The base plate 32 has a rectangular shape and has a square shape in the first embodiment, but may have a rectangular shape. Since the base plate 32 is closer to the light source module 41, which is a heat source, than the fin unit 30a, the base plate 32 is formed of a thick plate material.

  FIG. 11 is a perspective view showing the fin unit 30a according to Embodiment 1 of the present invention. As shown in FIG. 11, the fin unit 30 a has a plurality of fins 31 that are arranged radially on the base plate 32. The fin unit 30a and the base plate 32 are joined by caulking or welding.

  FIG. 12 is a perspective view showing the fin 31 according to Embodiment 1 of the present invention. As shown in FIG. 12, the fin 31 is formed in a U shape by bending a sheet metal, and the material is aluminum or the like. The fin 31 has a fin bottom surface 31a that is a U-shaped bottom surface and a fin side surface 31b that is a U-shaped side surface. The fin bottom surface 31a is attached to the base plate 32 and has an isosceles trapezoidal shape that spreads outward from the center in the radial direction. The fin side surface 31 b is connected to both ends of the fin bottom surface 31 a and stands up from the base plate 32. Since the fin bottom surface 31a has an isosceles trapezoidal shape, when the plurality of fins 31 are arranged radially, the distance between the fin side surfaces 31b is wide on the center side in the radial direction and the outside of the base plate 32 is narrow.

  The outer upper portion in the radial direction of the fin side surface 31b is an R portion 31c having an R shape. Thereby, the heat sink 30 is accommodated in the substantially conical illumination cover 80 or the substantially quadrangular pyramid illumination cover 80 without changing the shape. In addition, when a sheet metal for avoiding dust is provided on the heat sink 30, the area of the sheet metal can be made smaller than the area of the base plate 32. The fin 31 is formed with a fin opening 31 d communicating along the base plate 32. The fin opening 31d is formed substantially at the center of the fin side surface 31b. Thereby, the flow of the air of a horizontal direction is accelerated | stimulated and heat dissipation can be improved. According to the heat transfer simulation, by providing the fin opening 31d, heat dissipation is promoted compared to the case where the fin opening 31d is not provided, and the ambient temperature of the fin opening 31d is reduced by about 1 ° C.

  The fin 31 has a cutout 31e on the outer side in the radial direction and on the base plate 32 side. According to the heat transfer simulation, even if a part on the outer side in the radial direction of the fin 31 and on the base plate 32 side is cut out, the deterioration of the heat radiation performance is small. Moreover, the fin 31 can be reduced in weight by the notch 31e. Furthermore, by reducing the area of the fin bottom surface 31a, the bonding area between the fin unit 30a and the base surface is reduced, and the number of crimping locations or the welding length is reduced. It can be bonded mechanically and thermally.

  FIG. 13 is a top view showing an arrangement place of the fin unit 30a according to the first embodiment of the present invention. As shown in FIG. 13, the fins 31 are arranged outward from a position away from the center of the base plate 32. According to the heat transfer simulation, even if the fin 31 is disposed near the center of the base plate 32, the heat dissipation effect is not promoted to that extent. That is, even if a space is formed in the center of the base plate 32, the heat dissipation performance is only slightly reduced. Thus, by forming the space in the center of the base plate 32, the members of the heat sink 30 can be reduced and the luminaire 1 can be reduced in weight without substantially reducing the heat dissipation performance. Further, the fins 31 are arranged outward from a position away from the center of the base plate 32 as the diagonal line of the base plate 32 is approached. As a result, the fins 31 having the same shape can be uniformly arranged on the square base plate 32. Therefore, it is possible to suppress a bias in heat dissipation.

  As described above, since the fin 31 is formed in a U shape, it is self-supporting on the base plate 32. For this reason, the member which supports so that the fin 31 may not fall down is unnecessary. Therefore, a jig for arranging and bonding the fins 31 on the base plate 32 can be simplified. Further, in the fin 31, the interval between adjacent fin side surfaces 31 b is narrow on the center side of the base plate 32. Thereby, the fin side surface 31b is arrange | positioned radially. Thus, by arranging the fin side surfaces 31b radially, the area of the fin side surface 31b in the direction that obstructs the air flow is reduced regardless of the direction of the horizontal air flow. Therefore, heat dissipation can be improved. According to the heat transfer simulation, when the fin side surfaces 31b are arranged radially, heat dissipation is promoted and the ambient temperature of the fin side surfaces 31b is reduced by about 2 ° C. as compared to the case where the fin side surfaces 31b are arranged in the same direction.

  FIG. 14 is an exploded perspective view showing the light source unit 40 according to Embodiment 1 of the present invention. As shown in FIG. 14, the light source module 41 includes a square light source substrate 43 attached to the base plate 32, and a plurality of light sources 42 including, for example, LEDs arranged on the light source substrate 43 (see FIG. 10). ). The light source substrate 43 is formed with four light source boss holes 41b for alignment with the lens module 50. The lens module 50 includes a square lens substrate 52 provided on the irradiation side of the light source module 41 and a plurality of lenses 51 arranged on the lens substrate 52, and one lens 51 corresponds to one light source 42. Is provided. When the lens module 50 is arranged on the side of the light source module 41 where the light source 42 is arranged, it is necessary to align the positions of the light source 42 and the lens 51. Ribbed portions 50a that are notched are formed in two places on each side of the lens substrate 52 of the lens module 50, for a total of eight places. The lens substrate 52 is formed with four lens boss holes 50b for alignment with the light source module 41.

  The cover 60 is a square plate member that is attached to the base plate 32 and holds the light source module 41 and the lens module 50 together with the base plate 32. The cover 60 is made of, for example, a resin such as polycarbonate, whereby the cover 60 can be reduced in weight. Since the cover 60 is in the position farthest from the arm 11 in the lighting fixture 1, the weight of the cover 60 is reduced, so that the rotational moment of the lighting fixture 1 is reduced and the vibration resistance of the lighting fixture 1 is improved. Further, when the cover 60 is made of glass, it may be broken and fall as a broken piece. However, in the first embodiment, since the cover 60 is made of resin, even if the cover 60 is broken, the broken piece is hardly generated. The cover 60 is provided with a frame-shaped cover packing 62, and the cover packing 62 has the same shape as the outer shape of the light source module 41 and the lens module 50. The cover packing 62 is crushed when the light source unit 40 is assembled, and the light source module 41, the lens module 50, and the base plate 32 of the heat sink 30 are in close contact with each other.

  Cover ribs 60a are formed on the four sides inside the cover packing 62 of the cover 60 at two locations, for a total of eight locations. The cover rib 60 a is fitted to the rib receiver 50 a of the lens module 50. Four cover bosses 60 b are provided inside the cover packing 62 of the cover 60. The cover boss 60 b is fitted into the light source boss hole 41 b of the light source module 41 and the lens boss hole 50 b of the lens module 50. As described above, the cover rib 60a is fitted into the rib receiver 50a, and the cover boss 60b is fitted into the light source boss hole 41b and the lens boss hole 50b, whereby the light source module 41 and the lens module 50 are aligned.

  Cover mounting holes 60 c are formed at four corners of the cover 60. When the cover mounting screw 61 is inserted into the cover mounting hole 60c and the base mounting hole 32c of the base plate 32 and fastened, the cover packing 62 is crushed, and the light source module 41, the lens module 50, and the base plate 32 of the heat sink 30 are connected. In close contact. Thereby, the warp of the light source module 41 can be absorbed, and the lens 51 can be prevented from floating away from the light source 42.

  As shown in FIG. 1, the fall prevention part 70 fastens the fall prevention metal fitting 70 a attached to the attached part, the wire 71 connecting the fall prevention metal fitting 70 a and the main body frame 33, and the wire 71 and the main body frame 33. And a retaining screw 72. The fall prevention unit 70 prevents the light source unit 40 from falling even if the light source unit 40 is detached from the arm 11.

  Next, a procedure for assembling the lighting fixture 1 will be described. First, the fin unit 30a is joined to the base plate 32, and the heat sink 30 is manufactured. Next, the light source module 41, the lens module 50, and the heat sink 30 are placed on the cover 60, and the light source unit 40 is assembled. The arm unit 10 is assembled by attaching the power supply unit 20 and the main body frame 33 to the arm 11. Next, the arm unit 10 is turned upside down, the light source unit 40 is placed on the arm unit 10, and the cover 60, the base plate 32, and the main body frame 33 are fastened together by the cover mounting screw 61. Then, the electric wire 26 is attached to the light source module 41. Finally, the wire 71 extending from the fall prevention fitting 70 a and the main body frame 33 are fastened by the fastening screw 72.

  FIG. 15 is a perspective view showing illumination apparatus 1a according to Embodiment 1 of the present invention. As described above, in the lighting fixture 1 of the first embodiment, the radially outer upper portion of the fin side surface 31b is an R portion 31c having an R shape. As a result, as shown in FIG. 15, the heat sink 30 is housed in the substantially conical illumination cover 80 or the substantially quadrangular pyramid illumination cover 80 without changing the shape.

  According to the first embodiment, since the power supply holding portion 11c of the arm 11 holds the side surface of the power supply unit 20, it is not necessary to sandwich the power supply unit 20 between the attached portion such as the ceiling and the arm 11. For this reason, it can suppress that a to-be-attached part discolors. Further, the light source unit 40 and the power supply unit 20 are held in the light source holding unit 11d and the power supply holding unit 11c, which are different positions of the arm 11, respectively. For this reason, a load does not concentrate on one specific place of the arm 11. Therefore, the rigidity of the arm 11 can be easily secured.

  Further, according to the first embodiment, since the plurality of fins 31 are arranged radially on the base plate 32, the air flow is obstructed regardless of the direction of the horizontal air flow. The area of the fin 31 in the direction is reduced. Therefore, heat dissipation can be improved.

Embodiment 2. FIG.
FIG. 16 is a perspective view showing an arm 111 according to Embodiment 2 of the present invention. The second embodiment is different from the first embodiment in that the arm 111 of the lighting apparatus 100 includes a pair of one-side arms 11-1 and 11-2. In the first embodiment, the attachment portion 11a connects the pair of arm portions 11b and is attached to the attached portion. In the second embodiment, the attachment portions 11a of the one-side arms 11-1 and 11-2 are provided. It is attached to the attached part. Thus, even if the arm 111 is comprised from a pair of one-sided arms 11-1 and 11-2, there exists an effect similar to Embodiment 1. FIG.

Embodiment 3 FIG.
FIG. 17 is a perspective view showing a state where the light source unit 40 is detached from the arm 11 in Embodiment 3 of the present invention. The third embodiment is different from the first embodiment in that in the power supply unit 220 of the lighting fixture 200, the shielding part 21a is a terminal block cover 25 that covers the upper part and the side part of the opening 21b. In this case, the shielding part 21 a is fixed to the upper surface side of the case 21 of the power supply unit 220 with a screw. Thus, even if the shielding part 21a is comprised from the terminal block cover 25, there exists an effect similar to Embodiment 1. FIG.

  DESCRIPTION OF SYMBOLS 1 Lighting fixture, 1a Lighting apparatus, 10 arm unit, 11 arm, 11-1, 11-2 One side arm, 11a attachment part, 11b Arm part, 11c Power supply holding part, 11d Light source holding part, 11e Arm attachment hole, 11j Wire hole, 11f fastening hole, 11g cut and raised piece, 11h fulcrum part, 11i guide part, 12 power supply mounting screw, 13 angle adjustment bolt, 20 power supply unit, 21 case, 21a shielding part, 21b opening, 21c slit, 22 case top , 23 Case bottom, 24 Power terminal block, 25 Terminal block cover, 26 Electric wire, 30 Heat sink, 30a Fin unit, 31 Fin, 31a Fin bottom surface, 31b Fin side surface, 31c R part, 31d Fin opening, 31e Notch, 32 Base Plate, 32c Base mounting hole, 33 Body frame 33a, reinforcing rib, 33b flange, 40 light source unit, 41 light source module, 41b light source boss hole, 42 light source, 43 light source substrate, 50 lens module, 50a rib holder, 50b lens boss hole, 51 lens, 52 lens substrate, 60 Cover, 60a Cover rib, 60b Cover boss, 60c Cover mounting hole, 61 Cover mounting screw, 62 Cover packing, 70 Fall prevention part, 70a Fall prevention metal fitting, 71 Wire, 72 Fastening screw, 80 Lighting cover, 100 Lighting fixture, 111 Arm, 200 lighting fixtures, 220 power supply units.

Claims (9)

A light source unit having a light source;
A power supply unit for supplying power to the light source;
An arm for holding the light source unit and the power supply unit,
The arm is
A mounting portion to be attached to the mounted portion;
An arm portion connected to the attachment portion and extending from the attachment portion to the light source side,
The arm is
A light source holding portion that is provided on the distal end side with the mounting portion side as a base end, and holds the light source unit;
A lighting apparatus, comprising: a power supply holding part that is provided between the attachment part and the light source holding part and holds a side surface of the power supply unit. The arm has a U shape,
The arm part is a pair of members extending from both ends of the attachment part,
The lighting fixture according to claim 1, wherein each of the power supply holding portions of the pair of arm portions sandwiches both side surfaces of the power supply unit. In the power holding unit,
A cut and raised piece for holding the bottom surface of the power supply unit;
The lighting fixture according to claim 1, wherein a fastening hole into which a power supply mounting screw for fixing a side surface of the power supply unit is inserted is formed. A slit is formed on the bottom surface of the power supply unit,
The lighting fixture according to claim 3, wherein the power supply holding unit holds the power supply unit by inserting the cut and raised piece into the slit. The light source holder is
The light source unit is rotatably held,
A fulcrum portion serving as a fulcrum for rotation of the light source unit;
The lighting apparatus according to claim 1, further comprising a guide portion that extends downward from a horizontal position of the fulcrum portion and guides the rotation of the light source unit. The power supply unit is
An internal component having a power terminal block;
A case in which the internal parts are housed and an opening into which an electric wire connected to the power supply terminal block is inserted is formed;
The lighting fixture of any one of Claims 1-5 in which the shielding part which covers the said opening is provided in the said case. The lighting fixture according to claim 6, wherein a distance between the shielding portion and the fulcrum portion is shorter than a distance between the shielding portion and the guide portion. The light source unit is
A base plate for dissipating heat generated from the light source;
A light source module attached to the base plate and having the light source;
A lens provided on the irradiation side of the light source module;
The lighting fixture according to any one of claims 1 to 7, further comprising: a cover attached to the base plate and holding the light source module and the lens together with the base plate. The lighting fixture according to claim 8, wherein the cover is made of resin.

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