JP2006269111A - Luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire wherein a projection direction can be easily adjusted and the direction can be stably held. <P>SOLUTION: This luminaire 1 comprises a lamp 2 provided with a bulb 26, a mounting base 3 fixing the luminaire 1 to a mounting part and an arm 4 connecting between the lamp 2 and the mounting base 3. The lamp 2 is journalled to the arm 4 with a countersunk bolt 42 rotatably in a vertical direction. The arm 4 is provided with a through hole 41 in which the countersunk bolt 42 is rotatably inserted. The connecting part 27 of the lamp 2 is provided with a through hole 58 provided with a screw groove 29 in which the countersunk bolt 42 is screwed. The countersunk bolt 42 is screwed into a prescribed position in the screw groove 29 to journal the lamp 2 on the arm 4, and a pressing screw 45 pressing an insertion end part of the countersunk bolt 42 in an axial direction is screwed in the screw groove 29. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a luminaire, and more particularly to a luminaire that can easily adjust the irradiation direction of light and stably maintain the irradiation direction.

  Conventionally, a mounting base is attached to a mounted part inside and outside, and a lamp body consisting of a substantially cylindrical body having an irradiation port on one end side is pivotally supported on an arm provided on the mounting base, and a connecting part between the mounting base and the arm is used. For example, a spotlight-type lighting fixture is known in which a lamp can be rotated in a horizontal direction and a vertical direction so that a light irradiation direction can be freely changed (for example, Patent Document 1).

In such a lighting fixture, a rotating shaft such as a bolt is inserted from one side into a shaft hole provided in the connecting portion and arm of the lamp body, and the bolt is screwed into a screw groove provided in the other shaft hole. Thus, the lamp is pivotally supported so that the connecting portion and the arm can be tightened. In addition, the bolt is rotatably inserted into the shaft hole established in the connecting part and the arm, and is pivotally supported. After changing the irradiation direction of the lamp, the nut and the like are screwed to the bolt from the outside to tighten the connecting part and the arm. What fixed the irradiation direction was common.
JP-A-11-162224

  The bolts that fasten the lamp body and the arm as described above have a problem that the irradiation direction changes during use due to the looseness of the bolt's threaded part due to the weight and vibration of the lamp. Each time the direction was changed, it was necessary to adjust the irradiation direction by loosening the bolts using a screwdriver or hexagon stick, which required a tool and was troublesome.

  Then, this invention is made | formed in view of said problem, and provides the lighting fixture which can adjust the irradiation direction of light easily and can hold | maintain the irradiation direction stably. It is the purpose.

  The lighting fixture of the present invention comprises a lamp provided with a light source, a mounting base for fixing the lighting fixture to the mounted portion, and an arm connecting the lamp and the mounting base, and the arm is in a horizontal direction. A lighting fixture that is pivotally attached to the arm and pivotally supported on the arm by a pivot shaft so that the lamp is pivotable in a vertical direction. Is provided with a through hole through which the bolt is rotatably inserted, and the other is provided with a through hole with a screw groove into which the bolt is screwed. The bolt is screwed to a predetermined position in the screw groove. In addition, the lamp is pivotally supported on the arm, and a set screw for pressing the insertion end of the bolt in the axial direction is screwed into the screw groove.

  In the present invention, it is preferable that a waterproof member is disposed in the rotating portion where the lamp and the arm come into contact with each other and the through-hole opening where the bolt is inserted.

  And the lighting fixture of this invention is suitable as a spotlight type lighting fixture.

  According to the lighting apparatus of the present invention, a bolt as a rotation shaft is inserted from one of the shaft holes that penetrate the lamp and the arm and is screwed to a predetermined position in the other screw groove. The bolt and the pressing screw as the pressing member are screwed into a screw groove by screwing a pressing screw that is pivotally supported by the arm with a moderate angle and presses the insertion end of the bolt in the axial direction. Pushing bolts in the opposite directions to each other and locking the bolts can prevent the bolts from loosening and can stably maintain the irradiation direction of the lamp.

  The irradiation direction can be stabilized with such a simple pressing mechanism using a push screw, and the pressing force can be easily adjusted by adjusting the screw screw engagement state. This makes it easy to finely adjust the irradiation direction and eliminates the need for a tool for loosening a bolt or the like when the irradiation direction is changed.

  Further, by using the waterproof member, it is possible to prevent the intrusion of water and dust and greatly improve the durability of the lighting fixture for outdoor use.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The lighting fixture 1 of this embodiment is a spotlight type, and is mainly attached to an outdoor mounting portion such as the ground or the outside of a building. A lamp supported by an arm attached to a mounting base is vertically aligned with the horizontal direction. The light irradiation direction can be freely changed by rotating in the direction.

  1 is a side view showing the inside of the upper half of the lamp of the luminaire 1, FIG. 2 is a front view of the luminaire 1, FIG. 3 is a rear view showing a main partial cross section of the rotating portion, and FIG. It is an enlarged view of a shaft support part.

  The luminaire 1 includes a lamp 2 having a light bulb 26 in the lamp body 21, a mount 3 for fixing the luminaire 1 to a surface to be mounted, and an arm 4 that connects between the lamp 2 and the mount 3. It is made up of.

  The arm 4 is attached to the mounting base 3 at the base 47 so as to be pivotable in the horizontal direction, and the lamp 2 is pivotally supported by the arm 4 so as to be pivotable in the vertical direction. The lamp 2 is connected through the lamp 2 to form the lighting fixture 1 that can freely change the irradiation direction of the lamp 2 in the horizontal direction and the vertical direction.

  The lamp 2 has a light bulb 26 attached to a socket 24 fixed with a screw M to a socket fixture 25 provided in the rear of the cylindrical lamp body 21 whose front is opened, and a translucent glass 23 is provided on the front. A cylindrical hood 22 is covered by screwing from the outside of the front surface of the lamp body 21 through a waterproof packing 54 to close the interior of the lamp 2 to ensure waterproofness. In addition, it is preferable to use the product made from aluminum from the point which improves the heat dissipation effect for the socket fixture 25. FIG.

  A lower portion of the lamp body 21 is pivotally supported on the arm 4 by a countersunk bolt 42 such as a hexagonal hole, and a connecting portion 27 is provided so as to protrude from the lamp body 21 so that the lamp 2 can be rotated in the vertical direction. Inside the unit 27, a power supply line and a ground line 34 for supplying power to the lighting fixture 1 are wired to the lamp body 21 through the mounting base 3 and the arm 4, and power is supplied to the lamp 2. The ground wire is preferably thick in order to enhance the heat dissipation effect.

  As shown in FIG. 1, the lighting direction of the lamp 2 is about 90 ° in the upward direction (position shown in 2A) and about 60 ° in the downward direction (position shown in 2B). In other words, the lamp 4 can be easily rotated by hand, and after the rotation, the arm 4 is pivoted so as to be rotatable with a resistor capable of stably holding its position. The irradiation direction of the lamp 2 can be fixed at an arbitrary position.

  The connecting portion 27 of the lamp body 21 is provided with a through-hole 28 provided with a screw groove 29 on the inner periphery thereof for screwing a flat bolt 42 to be pivotally supported by the arm 4.

  The mounting base 3 is provided with a flange 31 having a flange 33 on the periphery of the bottom surface and a pedestal 35 protruding above the flange 31 so that the arm 4 is mounted, and the wiring 34 is guided to the outside and fixed to the mounting surface. The nut 32 is fixed.

  The base portion 47 of the arm 4 is inserted into the cylindrical arm mounting hole 36 provided in the pedestal 35 provided in the mounting base 3 with the base end portion 48 provided with a thread groove on the outer periphery of the lower portion with the washer W disposed. A wave washer 38 is disposed between the upper inner surface of the pedestal 35 and the stopper 37, and is screwed by a nut 39 so that an appropriate rotational resistance is applied between the base 47 and the pedestal 35. On the other hand, it is attached to be rotatable in the horizontal direction. Between the base 47 and the arm mounting hole 36, a ring-shaped water-proof packing 51 made of silicon rubber or the like is disposed and waterproofed.

  The arm 4 is provided with a through hole 41 through which the countersunk bolt 42 is rotatably inserted. The opening is provided with a recess 46 for accommodating the head of the countersunk bolt 42. The countersunk bolt 42 is inserted into the through hole 28 from the through hole 41 in contact with the inner end of the through hole 28 on the connecting portion 27 side.

  As shown in the figure, the countersunk bolt 42 has a washer 43 and a ring-shaped water stop rubber 53 disposed in an opening recess 46 through a through hole 41 on the arm 4 side, and is rotatably inserted in the through hole 41. 44 is inserted through the through hole 28 of the connecting portion 27 on the lamp 2 side to be in contact with, and is screwed to a predetermined position in the screw groove 29 in the through hole 28 (near the center of the screw groove 29 in the figure). . At this time, the countersunk bolt 42 is provided with a ring washer 43 on the periphery of the countersink so that the center of the bolt comes to the center of the through hole 41, thereby connecting to the through hole 41 on the arm 4 side. The axial center of the through hole 28 on the side of the portion 27 coincides, and the turning operation of the lamp is made smooth. Further, the waterproof property of the space in the through hole 41 is ensured by the water stop rubber 53 in a compressed state by the countersunk bolt 42.

  As a result, the lamp 2 is pivotally supported so as to be pivotable in the vertical direction with respect to the arm 4, and the rotation resistance of the lamp 2 is moderated by adjusting the tightening position of the bolt 42. In addition to facilitating the operation, the changed position is stably held and the irradiation direction is fixed.

  On the other hand, from the outer opening portion of the through hole 28 on the connecting portion 27 side, a detachable set screw 45 is screwed into the screw groove 29 so as to contact the insertion end portion of the countersunk bolt 42, and in the through hole 28. The pressing screw 45 and the insertion end of the countersunk bolt 42 are pressed against each other in the axial direction.

  By pressing the insertion end of the countersunk bolt 42 with the push screw 45 in this way, a lock mechanism that stops the countersink 42 from rotating and locks the screwed state acts, and the countersunk bolt due to its own weight, vibration, etc. 42 can be prevented from loosening and the irradiation direction of the lamp 2 can be stably maintained.

  In addition, by arbitrarily adjusting the screwing position of the countersunk bolt 42, the locking function of the push screw 45 is activated to finely adjust the contact force between the connecting portion 27 and the arm 4 so that the rotation resistance of the lamp 2 is optimized. It is possible to adjust, making it easy to change the irradiation direction, and after the change, the position can be reliably fixed. Further, once the screwing position of the countersunk bolt 42 and the pressing state of the push screw 45 are determined, a tool for loosening the bolt or the like is not required when changing the irradiation direction of the lamp 2, and the workability can be greatly improved. it can.

  A ring-shaped water-proof packing 52 made of silicon rubber or the like is disposed between the peripheral edge portion 19 of the connecting portion 27 and the abutting portion 49 of the arm 4 in a compressed and deformed state. It is possible to improve the durability of the luminaire 1 by preventing water and dust from entering even when used outdoors.

  In the above embodiment, the present invention has been described according to the spotlight-type lighting fixture 1 shown in the drawing. However, the shape, size, length, etc. of the lamp body, the arm, etc. are adjusted according to the type of light source and the lighting application. The present invention can be appropriately selected and used, and the present invention is not limited to the above embodiment.

  As described above, the lighting fixture of the present invention can be used as a lighting fixture for various uses for outdoor use as well as for indoor use, and exposed outdoors such as on the ground or outside the building. It can be widely used as a lighting device used in a state or as a peripheral lighting device using water such as a pool or a fountain, and is particularly suitable as a spotlight because the irradiation direction of light can be easily changed.

It is the side view which showed the inside of the lamp | ramp upper half of the lighting fixture of embodiment. It is a front view of a lighting fixture same as the above. It is a rear view which shows the principal part cross section of a rotation part same as the above. FIG. 4 is an enlarged view of the shaft support portion of FIG. 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Lighting fixture 2 ... Lamp 3 ... Mounting stand 4 ... Arm 29 ... Screw groove 41 ... Through hole 42 ... Countersunk bolt 45 ... Set screw 58 ... Through hole

Claims (3)

The lamp includes a light source, a mounting base for fixing a lighting fixture to a mounted portion, and an arm that connects the lamp and the mounting base, and the arm is pivotable in a horizontal direction. In a lighting fixture attached to a stand and supported by the arm by a pivot shaft so that the lamp can pivot in the vertical direction,
The rotating shaft is a bolt, and a through hole into which the bolt is rotatably inserted is provided in one of the lamp and the arm, and a through hole in which a screw groove into which the bolt is screwed is provided in the other. ,
The bolt is screwed to a predetermined position in the screw groove, and the lamp is pivotally supported on the arm, and a push screw for pressing the insertion end of the bolt in the axial direction is screwed into the screw groove. Lighting equipment characterized by being combined.   The lighting apparatus according to claim 1, wherein a waterproof member is disposed in a rotating portion where the lamp and the arm are in contact with each other and a through-hole opening portion into which the bolt is inserted. The lighting fixture according to claim 1 or 2, wherein the lighting fixture is a spotlight type.

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