JP2014186967A - Led lighting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lighting apparatus that can be made small.SOLUTION: An apparatus body 2 is formed into a box-shape at the front part of which an opening is provided, and houses an LED unit 5 inside. Light emitted from the LED unit 5 is radiated to outside from the opening of the apparatus body 2. A supporting member 3 has a pair of arm parts 32 arranged in parallel to each other, and rotatably supports the apparatus body 2 at tips of the arm parts 32. A scale plate 4 is mounted to the apparatus body 2, and is arranged around a shaft 33 that is a rotation shaft of the apparatus body 2. A scale for displaying a relative rotation angle of the apparatus body 2 to the arm parts 32 is provided on the scale plate 4. The scale plate 4 is arranged so that one part of the scale plate 4 is overlaid on a side face of the apparatus body 2 (a surface of a side plate part 22) when seen from a direction parallel to an axial direction of the shaft 33. A step is provided on the side plate part 22 so that a region (flat face 22b) on which the scale plate 4 is overlaid is positioned inside the other region.

Description

  The present invention relates to an LED lighting apparatus.

  2. Description of the Related Art Conventionally, there has been a lighting fixture that includes a lighting fixture main body that houses a lamp and a mounting bracket that supports the lighting fixture main body and is attached to a lighting stand or the like, and is used as a projector (see, for example, Patent Document 1).

  On the front side of the luminaire main body, a reflector having an inner surface formed on a paraboloid is attached, and a lamp is disposed on the inner side.

  The mounting bracket is bent into a U shape, and the side surface of the luminaire body is rotatably supported between the arm portions on both sides. That is, the luminaire main body is supported so as to be rotatable about a rotation axis formed by connecting the tips of the arm portions on both sides.

  A disk with a scale serving as a reference when adjusting the angle (rotation angle) of the luminaire main body with respect to the mounting bracket is attached to the inside of one arm portion.

JP 9-166131 A

  In the above-described lighting fixture, a disk with an angle scale is attached to the inside of one arm portion. In order to ensure the visibility of the scale, the disc needs to have a certain size, but the arm portion needs to be arranged outside so that the disc and the reflector do not interfere with each other. Therefore, the size of the rear part of the instrument main body is widened, and there is a problem that the instrument main body is enlarged.

  This invention is made | formed in view of the said subject, The place made into the objective is to provide the LED lighting fixture which implement | achieved size reduction.

  The LED lighting apparatus of the present invention includes an apparatus main body, a support member, and a scale plate. The instrument main body is formed in a box shape having an opening at the front portion, houses the LED therein, and emits light emitted from the LED to the outside through the opening. The support member has a plurality of arm portions arranged in parallel to each other, and rotatably supports the instrument body at the tip portion of the arm portion. A scale plate is attached to one of the instrument body and the arm part and is arranged around the rotation axis of the instrument body, and displays a relative rotation angle of the instrument body with respect to the arm part. A scale is provided. The scale plate is arranged so that at least a part of the scale plate overlaps the side surface of the instrument body when viewed from a direction parallel to the rotation axis, and the scale plate is disposed on the side surface of the instrument body. The step is provided so that the overlapping region is located inside the other region.

  In this LED lighting apparatus, it is also preferable that the rotation range of the arm portion is regulated by the arm portion hitting a step portion provided between the region where the scale plate overlaps and another region on the side surface. .

  In this LED lighting apparatus, it is also preferable that a fin for heat radiation extending along a plane orthogonal to the rotation axis is provided at the rear part of the apparatus main body.

  According to the present invention, the side surface of the instrument main body is provided with a step so that the area overlapping the scale plate when viewed from the direction parallel to the rotation axis is located on the inner side than the other area. Can be arranged on the inside. Therefore, since the size of the part supported by the support member in the instrument main body can be reduced, the instrument main body can be downsized as a whole.

The lighting fixture of this embodiment is shown, (a) is a front view, (b) is a left view, (c) is a rear view. The lighting fixture same as the above is shown, (a) is a top view, (b) is a bottom view. It is a right view of a lighting fixture same as the above. The lighting fixture same as the above is shown, (a) is a partially broken front view, (b) is a sectional view seen from the left side. It is explanatory drawing explaining the rotation range of a lighting fixture same as the above.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. In this embodiment, an outdoor projector will be described as an example. However, the lighting apparatus according to the present invention is not limited to an outdoor projector, and can be applied to a lighting apparatus used for other purposes.

  As shown in FIGS. 1 to 4, the LED lighting device 1 of this embodiment includes a device main body 2 and a support member 3. In the following description, unless otherwise specified, the description will be made by defining the vertical and horizontal directions in the direction shown in FIG. 1A and defining the left side in FIG. 3 as the front side. This direction is defined for convenience of explanation, and does not limit the direction when the LED lighting apparatus 1 is used.

  The instrument body 2 is made of, for example, an aluminum die cast product formed by a die casting method. The instrument body 2 is formed in a box shape having a rectangular bottom plate portion 21 and a side plate portion 22 provided so as to protrude from the outer edge of the bottom plate portion 21 to the front side. A flange 23 for attaching the frame member 24 is provided at the front end portion of the side plate portion 22. As shown in FIG. 4B, a glass plate 25 made of, for example, crystallized glass is sandwiched between the flange 23 and the frame member 24, and light emission of the LED unit 5 described below is forward through the glass plate 25. Is irradiated. A packing (not shown) is fitted between the flange 23 and the frame member 24 and the glass plate 25 to improve the sealing performance.

  Four LED units 5, a power supply unit 6, and a reflector unit 7 are accommodated in the appliance body 2.

  Each LED unit 5 is configured by mounting an LED (Light Emitting Diode) as a light source and a lens on a substrate. The four LED units 5 are respectively arranged at positions that form a square apex in the bottom plate portion 21. The four LED units 5 are arranged close to the upper side of the bottom plate portion 21.

  The power supply unit 6 includes a rectangular parallelepiped case 61 elongated in the left-right direction. Two sets of power supply circuits (not shown) are accommodated in the case 61. A power supply circuit consists of switching power supplies, for example, supplies a fixed electric current to the LED unit 5, and makes the LED unit 5 light. Two LED units 5 are connected in series to each power supply circuit, and the LED units 5 are lit when each power supply circuit supplies power to the LED units 5. The number of LED units 5 and the power supply specifications can be appropriately changed according to the specifications such as the light output of the LED lighting device 1.

  As shown in FIG. 4B, the storage space 26 for storing the power supply unit 6 is provided below the storage space for storing the LED unit 5 and the reflector unit 7 inside the instrument main body 2.

  The lower side plate portion 22 is provided with an inclined portion 22a that is inclined inward (on the inner space side of the instrument body 2 and on the upper side in FIG. 4B) as it goes rearward. The inclined portion 22a protrudes to the rear side from the mounting position of the LED unit 5. The upper part of the bottom plate part 21 is a flat plate part 21a parallel to the front surface of the instrument body 2, and the LED unit 5 is attached to the flat plate part 21a. On the lower side portion of the bottom plate portion 21, an overhang portion 21 b is provided that protrudes substantially obliquely to the inclined portion 22 a from the rear end of the inclined portion 22 a toward the oblique upper side. As shown in FIG. 4B, a step is provided between the upper end portion of the overhang portion 21b and the flat plate portion 21a. As shown in FIG. 1C, FIG. 2A, and FIG. 3, the stepped portion has an inclined surface that is inclined obliquely downward (toward the inclined portion 22a) from the central portion in the left-right direction toward the outside. 21c is provided. In addition, a plurality of fins 27 extending in the vertical direction from the bottom plate portion 21 (consisting of the flat plate portion 21a and the overhang portion 21b) to the outer surface of the inclined portion 22a are spaced at substantially constant intervals in the left-right direction. Is formed.

  As shown in FIG. 4B, the storage space 26 surrounded by the overhanging portion 21b, the inclined portion 22a, and the left and right side plate portions 22 is surrounded by the flat plate portion 21a, the upper side plate portion 22, and the left and right side plate portions 22. The depth is deeper than the storage space. As shown in FIGS. 4A and 4B, the power supply unit 6 is stored in the storage space 26 with one side surface of the case 61 facing the inner side surface of the inclined portion 22a. One side surface of the case 61 may be in contact with the inner side surface of the inclined portion 22a.

  Since the inclined portion 22a is inclined inward as it goes to the rear side, the case 61 arranged with one side faced to the inner side surface of the inclined portion 22a is also inclined so as to be closer to the inner side as it goes to the rear side. Thus, the size of the rear part of the instrument body 2 is smaller than when the case 61 is arranged so that one side surface thereof is parallel to the front-rear direction. As will be described later, the instrument body 2 is supported by the support member 3 so as to be rotatable about a shaft 33. In the present embodiment, the case 61 of the power supply unit 6 is disposed so as to be directed upward as it goes rearward, and the rear portion of the case 61 is disposed closer to the shaft 33, so that the shaft 33 that supports the instrument body 2. The load applied to is reduced.

  A cable introduction port 21d for introducing a power supply line from the outside is provided at the bottom of the bottom plate portion 21. The inclined portion 22a is provided with an opening in the vicinity of the cable introduction port 21d, and a lid 29 is attached so as to cover the opening. When connecting the power supply line to the power supply unit 6 housed in the appliance body 2, the power supply line is inserted into the cable introduction port 21d with the lid 29 removed, and the power supply line is inserted through the opening of the inclined portion 22a. The operation of connecting the connector connected to the wire to the connector on the power supply unit 6 side is performed. When the connection work of the connector is completed, the opening of the inclined portion 22a is closed with the lid 29, and the inside of the instrument body 2 is sealed.

  In the bottom plate portion 21, four LED units 5 are arranged on the flat plate portion 21a above the protruding portion 21b. The four LED units 5 are divided into two pieces each above and below. The upper two LED units 5 and the lower two LED units 5 are arranged at substantially the same intervals on the left and right sides, respectively, and the LED unit 5 is located at a square apex when viewed from the front. Are arranged respectively.

  The reflection plate unit 7 includes an attachment plate 71 and four reflection members 72 attached to the attachment plate 71. The front surface of the mounting plate 71 is painted white to increase the reflectance. The mounting plate 71 is disposed in the vicinity of the opening of the instrument body 2 so as to be parallel to the glass plate 25. The mounting plate 71 is provided with a round hole (not shown) at a front position of each LED unit 5 disposed on the bottom plate portion 21, and a reflecting member 72 is attached to each round hole. The reflecting member 72 is formed in a cylindrical shape having both ends in the front-rear direction opened, and the inner surface of the reflecting member 72 is a paraboloid of revolution. Each LED unit 5 is disposed in the vicinity of the center of the rear opening of the reflecting member 72 as viewed from the front, and the light distribution of the light emitted from the LED unit 5 is controlled by the reflecting member 72.

  In addition, on the rear surface of the bottom plate portion 21, bearing portions 28 that rotatably support the shaft 33 of the support member 3 are provided on both the left and right sides. The bearing portion 28 is provided near the overhanging portion 21b in the flat plate portion 21a, and the weight balance is maintained by arranging the rotation center on the power supply unit 6 side which is a heavy object.

  The support member 3 is formed by bending a metal sheet metal, and is formed by bending a mounting plate 31 placed on a base portion (not shown) on which the LED lighting apparatus 1 is installed, and both sides of the mounting plate 31. And a pair of arm portions 32 provided integrally.

  As shown in FIG. 2, the mounting plate 31 is provided with a round hole 31a and a long hole 31b extending in an arc shape so as to draw a semicircle around the round hole 31a. The foundation portion is provided with a mounting bolt inserted through the round hole 31a and a mounting bolt inserted through the long hole 31b. The mounting plate 31 is fixed to the base portion by passing the two mounting bolts through the round hole 31a and the long hole 31b and tightening the mounting plate 31 with a nut screwed into each mounting bolt. Here, since the long hole 31b extends in an arc shape so as to draw a semicircle around the round hole 31a, the mounting plate 31 is rotated around the mounting bolt passed through the round hole 31a with the nut loosened. By doing so, the light irradiation direction can be adjusted within a range of 180 degrees. The mounting plate 31 is formed with a scale of an angle along the outer periphery of the long hole 31b, which can be used as a guide when adjusting the irradiation direction.

  The pair of arm portions 32 protrudes obliquely upward and forward from the mounting plate 31, and the tip ends of the pair of arm portions 32 are formed to be parallel to each other. A shaft 33 projecting inward (on the other arm portion 32 side) is provided on the distal end side of each arm portion 32, and the shaft 33 of each arm portion 32 is supported from the outside by a corresponding bearing portion 28. Thereby, the instrument main body 2 is supported by the support member 3 so as to be rotatable about the shaft 33. The scale plate 4 made of a metal (for example, aluminum) disk is attached to one (for example, the left side) of the two bearing portions 28. The scale plate 4 is attached to the instrument body 2 so that the center thereof coincides with the shaft 33. The scale plate 4 is formed with a scale of an angle indicating a relative rotation angle of the instrument body 2 with respect to the arm portion 32. In the LED lighting device 1 of the present embodiment, the swing angle of the device body 2 is 60 degrees at the maximum in the downward direction and 90 degrees at the maximum in the upward direction. On the scale plate 4, a scale is formed from 60 degrees in the downward direction to 90 degrees in the upward direction. FIG. 5 is an explanatory view showing the rotation range of the instrument body 2. In FIG. 5, the instrument main body 2 rotated to a position where the light irradiation direction becomes the horizontal direction (tilt is 0 degrees) is indicated by a solid line, and the instrument main body 2 rotated to a position where the irradiation direction faces the lower 60 degrees. The instrument main body 2 rotated to a position where the irradiation direction is vertically upward is indicated by a broken line, indicated by a two-dot chain line.

  The left and right side plate portions 22 of the instrument main body 2 are provided with flat surfaces 22b that protrude from the left and right side edges of the bottom plate portion 21 toward the front side from the bottom plate portion 21 to the middle portion in the front-rear direction of the side plate portion 22. In the left and right side plate portions 22, a step is provided between the flat surface 22b and a portion on the front side of the flat surface 22b, and a part of the scale plate 4 is disposed at the step portion.

  Thus, the scale plate 4 is attached to the instrument body 2 between the side plate portion 22 and the arm portion 32 of the instrument body 2 so as to be disposed around the shaft 33. On the surface (side surface) of the side plate portion 22 on which the scale plate 4 is disposed between the arm portion 32 and a region (flat surface 22b) where the scale plate 4 overlaps when viewed from a direction parallel to the axial direction of the shaft 33. A step is provided between other regions (that is, regions on the front side of the flat surface 22b). Thus, even when the scale plate 4 is enlarged to improve the visibility, the interference between the scale plate 4 and the instrument body 2 can be avoided. Even when the scale plate 4 is enlarged, a step is provided between the flat surface 22b on which the scale plate 4 is arranged and the outermost part of the side plate part 22, so that the size of the rear part of the instrument body 2 is large. The device body 2 can be downsized.

  In addition, on the surfaces of the left and right side plate portions 22, the arm portion 32 hits the step portions 22 c and 22 d between the outermost portion and the region (flat surface 22 b) where the step is provided between the outermost portion and the outermost portion. The rotation range of the arm part 32 can be regulated. As shown in FIG. 5, when the instrument body 2 is rotated downward by more than 60 degrees, the arm portion 32 hits the stepped portion 22d and cannot be rotated downward any further. Further, when the instrument main body 2 is rotated upward by more than 90 degrees to a predetermined angle, the arm portion 32 hits the stepped portion 22c and cannot be rotated further upward.

  In addition, one arm portion 32 is provided with a handle 34 for fixing the position of the instrument body 2 in a state of being rotated at a desired angle. The handle 34 is formed by bending a metal bar into an L shape. A screw portion formed on one end side of the handle 34 is screwed into a screw hole of the arm portion 32, and a fastening fitting 35 is connected to the tip thereof. When the handle 34 is rotated in one direction, the fastening fitting 35 moves in a direction approaching the arm portion 32, and a part of the appliance main body 2 is sandwiched between the fastening fitting 35 and the arm portion 32, whereby the instrument body The position of 2 is fixed. When the handle 34 is rotated in the reverse direction, the fastening fitting 35 moves in a direction away from the arm portion 32, so that the device main body 2 is opened and the device main body 2 can be rotated around the shaft 33 of the arm portion 32. .

As described above, the LED lighting device 1 of this embodiment includes the device main body 2, the support member 3, and the scale plate 4.
The instrument main body 2 is formed in a box shape with an opening provided at the front, houses the LED unit 5 (LED) inside, and emits light emitted from the LED unit 5 from the opening to the outside. The support member 3 has a plurality (a pair in the present embodiment) of arm portions 32 arranged in parallel to each other, and rotatably supports the instrument body 2 at the distal end portion of the arm portions 32. The scale plate 4 is attached to the instrument main body 2 and is arranged around the rotation axis (axis 33) of the instrument main body 2. The scale plate 4 is provided with a scale for displaying the relative rotation angle of the instrument body 2 with respect to the arm portion 32. The scale plate 4 is arranged so that at least a part of the scale plate 4 overlaps the side surface of the instrument body 2 (the surface of the side plate portion 22) when viewed from the direction parallel to the rotation axis (axis 33). And the level | step difference is provided in the surface of the side plate part 22 so that the area | region (flat surface 22b) where the scale plate 4 overlaps may be located inside the other area | region. In the present embodiment, the scale plate 4 is attached to the instrument main body 2, but may be attached to either the instrument main body 2 or the arm part 32, or may be attached to the arm part 32.

  Thus, on the side surface of the instrument main body 2 (the surface of the side plate portion 22), the region (flat surface 22b) where the scale plate 4 is arranged is located inside the other region (the front side portion of the flat surface 22b). Since the step is provided so as to be positioned, the position of the arm portion 32 can be arranged inside. Therefore, the size of the rear part of the instrument body 2 is reduced, and the instrument body can be downsized.

  Moreover, the step part provided between the area | region (flat surface 22b) where a scale plate overlaps in the side surface (surface of the side plate part 22) of the instrument main body 2, and another area | region (site | part ahead of the flat surface 22b). The rotation range of the arm part 32 is regulated by the arm part 32 hitting 22c, 22c. As shown in FIG. 5, when the instrument body 2 is rotated downward by more than 60 degrees, the arm portion 32 hits the stepped portion 22d and cannot be rotated downward any further. Further, when the instrument main body 2 is rotated upward by more than 90 degrees to a predetermined angle, the arm portion 32 hits the stepped portion 22c and cannot be rotated further upward.

  Thereby, it can restrict | limit that the instrument main body 2 rotates exceeding a predetermined rotation range with respect to the arm part 32, and can restrict | limit the adjustment range of the direction in which light is irradiated to a desired angle range.

  Further, a heat radiating fin 27 extending along a plane orthogonal to the rotation axis (axis 33) is provided at the rear part of the instrument body 2.

  Since the fin 27 is formed along a plane orthogonal to the rotation axis (axis 33), when the LED lighting apparatus 1 is installed so that the rotation axis (axis 33) is parallel to the horizontal direction, the fin 27 is It arrange | positions so that it may extend along the direction parallel to a perpendicular direction. By the way, when the fin 27 extends in a direction obliquely intersecting the vertical direction, water or dust attached to the surface of the instrument body 2 remains on the fin 27 and hardly falls down, and at low temperatures. There is a possibility of icing on the surface of the fin 27. On the other hand, when the LED lighting apparatus 1 is installed so that the fins 27 extend along the vertical direction, water, dust, and the like attached to the surface of the fins 27 easily fall down. It becomes difficult to form ice on the surface.

  It should be noted that a wide variety of different embodiments can be configured without departing from the spirit and scope of the present invention, and the present invention is not limited to a specific embodiment.

DESCRIPTION OF SYMBOLS 1 LED lighting fixture 2 Appliance main body 3 Support member 4 Scale plate 5 LED unit (LED)
21 Bottom plate part 22 Side plate part (side surface of instrument body)
22b Flat surface (region with steps)
22c, 22d Stepped portion 27 Fin 28 Bearing portion 32 Arm portion 33 Axis (rotating shaft)

Claims (3)

An instrument body that is formed in a box shape with an opening at the front, houses the LED inside, and emits light emitted from the LED to the outside from the opening;
A plurality of arm portions arranged in parallel with each other, and a support member that rotatably supports the instrument body at a tip portion of the arm portion;
A scale that is attached to one of the instrument body and the arm part and is arranged around a rotation axis of the instrument body and displays a relative rotation angle of the instrument body with respect to the arm part is provided. With a scale plate,
The scale plate is arranged so that at least a part of the scale plate overlaps the side surface of the instrument body when viewed from a direction parallel to the rotation axis,
The LED lighting device according to claim 1, wherein a step is provided on the side surface of the device main body so that a region where the scale plate overlaps is located on an inner side than other regions.   2. The rotation range of the arm portion is regulated by the arm portion hitting a step portion provided between a region where the scale plate overlaps with another region on the side surface. LED lighting fixtures.   3. The LED lighting apparatus according to claim 1, wherein a heat radiation fin extending along a plane orthogonal to the rotation axis is provided at a rear portion of the apparatus main body.

Images