JP2014186968A - Led lighting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lighting apparatus that can be made small.SOLUTION: An LED lighting apparatus 1 comprises an apparatus body 2, an LED unit 5, and a power source unit 6. The apparatus body 2 is formed into a box shape whose front face is opened by a bottom plate part 21, and a side plate part 22 projecting to a front side from an outer edge of the bottom plate part 21. The LED unit 5 is housed inside the apparatus body 2, and radiates light to outside from the opening of the apparatus body 2. The power source unit 6 houses a power source circuit for supplying power to the LED unit 5 in a rectangular parallelepiped case 61. An inclination part 22a inclined inward as it goes to a rear side is provided at one part of the side plate part 22. The power source unit 6 is housed inside the apparatus body 2 at a position not overlaid on the LED unit 5 when seen from a forward and backward direction inside the apparatus body 2, so that an inner face of the inclination part 22 is opposed to one face of a case 61.

Description

  The present invention relates to an LED lighting apparatus.

  Conventionally, it is composed of a hemispherical housing portion whose front and rear surfaces are open, and a cylindrical socket mounting portion fixed to the rear portion of the housing portion so as to close the opening portion on the rear surface side of the housing portion. There has been an LED projector equipped with a container (see, for example, Patent Document 1). In the LED projector disclosed in Patent Document 1, a printed wiring board is attached around the opening inside the housing. A plurality of LEDs are mounted on the front surface (front surface) of the printed wiring board, and a heat radiator is disposed on the back surface of the printed wiring board so that the entire back surface of the printed wiring board is in close contact with the heat radiator. . A power supply circuit unit for supplying power to the LEDs is housed in the socket mounting portion.

JP 2010-251191 A

  In the projector disclosed in Patent Document 1, since the heat radiating body is attached to the rear side of the printed wiring board and the power supply circuit unit is further arranged on the rear side, the longitudinal dimension of the body is large. In addition, since the power circuit unit formed in a rectangular parallelepiped shape is housed inside the container so that its longitudinal direction is parallel to the front-rear direction, the dimensions of the container in the front-rear direction are further increased.

  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, an LED, and a power supply unit. The instrument main body is formed in a box shape having a front surface opened by a bottom plate portion and a side plate portion protruding forward from an outer edge of the bottom plate portion. The LED is housed inside the instrument body and emits light from the opening of the instrument body to the outside. The power supply unit houses a power supply circuit for supplying power to the LEDs in a rectangular parallelepiped case. At least a part of the side plate portion includes a first inclined portion that is inclined inwardly toward the rear side. The power supply unit is housed inside the appliance body so that one surface of the case faces the inner side surface of the first inclined portion at a position that does not overlap the LED when viewed from the front-rear direction inside the appliance body. Has been.

  In this LED lighting apparatus, it is also preferable to have the following configuration. In the bottom plate portion, a protruding portion that protrudes rearward from the other portion is provided continuously from the rear end of the first inclined portion at a portion corresponding to the storage space of the power supply unit. A step portion formed between the projecting portion and a portion other than the projecting portion in the bottom plate portion, a second inclined portion that inclines so as to approach the first inclined portion side from the center portion toward the outside. Is provided.

  According to the present invention, the power supply unit is arranged so that one surface of the case faces the inner side surface of the first inclined portion provided on the side plate portion at a position that does not overlap with the LED when viewed from the front-rear direction inside the instrument body. Housed inside the instrument body. Therefore, since the power supply unit and the LED are arranged side by side when viewed from the front-rear direction, the thickness of the instrument body in the front-rear direction can be reduced. Moreover, since the first inclined portion is inclined inward as it goes to the rear side, the rear end side of the case is arranged closer to the inner side than the front end side of the case, and the size of the rear portion of the instrument body is large. Can be reduced.

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

  Embodiments of the present invention will be described below 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 3, 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 right side in FIG. 1B 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. 1B, 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. 1B, 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 body 2.

  The lower side plate portion 22 is provided with an inclined portion 22a (first inclined portion) that inclines inward (on the side of the internal space of the instrument body 2 and on the upper side of FIG. 1B) as it goes to the rear side. It has been. 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.1 (b), the level | step difference is provided between the upper end part of the overhang | projection part 21b, and the flat plate part 21a. As shown in FIGS. 1 (c), 2 (c) and 3 (a), the step portion is inclined obliquely downward (in the direction approaching the inclined portion 22a) from the central portion in the left-right direction toward the outside. An inclined surface 21c (second inclined portion) 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. 1B, 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 for the LED unit 5 and the reflector block 7. As shown in FIGS. 1 (a) and 1 (b), the power supply unit 6 has one side surface of the case 61 at the position where it does not overlap with the LED unit 5 when viewed from the front-rear direction inside the appliance body 2, Is stored in the storage space 26 in a state of being opposed to the storage space 26. 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. 3, 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. On the scale plate 4, a scale having an angle indicating a relative rotation angle of the arm portion 32 with respect to the instrument body 2 is formed. 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. 4 is an explanatory view showing the rotation range of the instrument body 2. In FIG. 4, the instrument main body 2 rotated to a position where the light irradiation direction is the horizontal direction (tilt is 0 degree) is indicated by a solid line, and the instrument main body 2 rotated to a position where the irradiation direction is directed to 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, the scale plate 4 is seen from a direction parallel to the shaft 33 (direction parallel to the direction in which the shaft 33 extends). A step is provided between the overlapping region (flat surface 22 b) and the outermost part of the side plate portion 22. 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. 4, 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 further rotated downward. 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 the present embodiment includes the device main body 2, the LED unit 5 (LED 2), and the power supply unit 6. The instrument main body 2 is formed in a box shape having a front surface opened by a bottom plate portion 21 and a side plate portion 22 protruding forward from the outer edge of the bottom plate portion 21. The LED unit 5 is housed inside the instrument body 2 and emits light from the opening of the instrument body 2 to the outside. The power supply unit 6 houses a power supply circuit (not shown) for supplying power to the LED unit 5 in a rectangular parallelepiped case 61. At least a part of the side plate portion 22 includes an inclined portion 22a (first inclined portion) that is inclined inward toward the rear side. The power supply unit 6 is housed inside the instrument body 2 so that one surface of the case 61 faces the inner side surface of the inclined portion 22a at a position that does not overlap the LED unit 5 when viewed from the front-rear direction inside the instrument body 2. Has been.

  At a position where the LED unit 5 does not overlap when viewed from the front-rear direction inside the appliance body 2, the power supply unit 6 is arranged so that one surface of the case 61 faces the inner surface of the inclined portion 22 a provided on the side plate portion 22. Housed inside the instrument body 2. Therefore, since the power supply unit 6 and the LED unit 5 are arranged side by side when viewed from the front-rear direction, the thickness of the instrument body 2 in the front-rear direction is reduced as compared with the case where the power supply unit 6 and the LED unit 5 are arranged in the front-rear direction. it can. Moreover, since the inclined part 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 part 22a also becomes closer to the inner side as it goes to the rear side. It is inclined to. Therefore, the size of the rear part of the instrument main body 2 can be reduced as compared with the case where one side surface of the case 61 is arranged in parallel with the front-rear direction. Moreover, in this embodiment, it arrange | positions so that the case 61 of the power supply unit 6 may go to an upper side, so that it goes to the back side, and the rear part of the case 61 is arrange | positioned close to the axis | shaft 33 used as the rotating shaft of the instrument main body 2. Therefore, the load applied to the shaft 33 that supports the instrument body 2 can be reduced.

  Further, the bottom plate portion 21 is provided with a protruding portion 21b that protrudes to the rear side of the other portion at a portion corresponding to the storage space 26 of the power supply unit 6 from the rear end of the inclined portion 22a. And in the baseplate part 21, the level | step-difference part which can be performed between site | parts (flat-plate part 21a) other than the overhang | projection part 21b and the overhang | projection part 21b so that it may approach the inclination part 22a side as it goes outside from a center part. An inclined surface 21c (second inclined portion) that is inclined is provided.

  Thus, by projecting a portion corresponding to the storage space 26 of the power supply unit 6 in the bottom plate portion 21 to the rear side, the storage space 26 for storing the power supply unit 6 can be expanded. Moreover, since the thickness of parts other than the overhang | projection part 21b in the instrument main body 2 becomes small compared with the site | part in which the overhang | projection part 21b was provided, size reduction of the instrument main body 2 is achieved. And since the inclined surface 21c is provided in the level | step-difference part between the overhang | projection part 21b and the flat plate part 21a, the water adhering to this level | step-difference part can be flowed down along inclination, and a level | step-difference part The water accumulated in the water becomes difficult to freeze.

  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 5 LED unit (LED)
6 Power supply unit 21 Bottom plate portion 21a Flat plate portion 21b Overhang portion 21c Inclined surface (stepped portion, second inclined portion)
22 side plate portion 22a inclined portion (first inclined portion)
61 cases

Claims (2)

An instrument body formed in a box shape with an open front surface with a bottom plate portion and a side plate portion protruding forward from an outer edge of the bottom plate portion,
LED that is housed inside the instrument body and that emits light from the opening of the instrument body to the outside;
A power unit containing a power circuit for supplying power to the LED in a rectangular parallelepiped case;
At least a part of the side plate portion has a first inclined portion that is inclined inwardly toward the rear side,
The power supply unit is housed inside the appliance body so that one surface of the case faces the inner side surface of the first inclined portion at a position that does not overlap the LED when viewed from the front-rear direction inside the appliance body. The LED lighting fixture characterized by the above-mentioned. In the bottom plate portion, a protruding portion that protrudes rearward from the other portion is provided continuously from the rear end of the first inclined portion at a portion corresponding to the storage space of the power supply unit,
A step portion formed between the projecting portion and a portion other than the projecting portion in the bottom plate portion, a second inclined portion that inclines so as to approach the first inclined portion side from the center portion toward the outside. The LED lighting apparatus according to claim 1, further comprising:

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