JP2005332708A - Lighting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting apparatus in which when an arm is installed on a pole, screws or the like are not exposed, thereby giving an improved appearance, and installing the arm on the pole at any installation angle. <P>SOLUTION: The arm cylinder 3c of the arm main body 3a on which side face a flood light 1 is fitted and a stabilizer 5 is built in is installed on the upper end part of a pole 4 so as to be engaged with an engaging part 4b on the pole 4 side. An insertion hole for wiring 4c is provided at the upper end plate 4e of the pole 4 provided standing, and a screw hole 3d is provided at the position offset from the upper end plate 4e. By adjusting the arm main body 3a so that it may be placed at any angle on the upper end of the pole 4, two fixing screws 3f are penetrated from the inner side of the arm main body 3a through a long hole 3e of arc shape formed on the arm main body 3a and are fixed to the screw holes 4d of the upper end plate 4e of the pole. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a lighting device attached to an upper end of a pole and installed through an arm.

  2. Description of the Related Art Conventionally, as a lighting device installed on a street, a road, a park, a plaza, or the like, a lighting device in which a plurality of lighting fixtures are installed at the upper end of a pole via an arm is well known. In such an illumination device, a ballast is housed in a pole, wiring is inserted into the pole and arm, and the light source of the lighting fixture is turned on. If the ballast is installed in the pole in this way, the aesthetic appearance may be impaired, such as the pole becoming thick.

  Therefore, in order to provide a lighting device that enables the use of a general-purpose ballast without impairing the aesthetic appearance, when mounting a lighting fixture including a discharge lamp on the top of the pole via the arm, a box-shaped arm is used. Patent Document 1 discloses that the discharge lamp ballast is housed in the housing portion of the box-shaped arm.

  In Patent Document 2, the arm cylinder of the lamp is made higher than the fitting part on the pole, a lead wire insertion hole is formed in the non-fitting part, the arm cylinder is covered with a cap, and the bolt is placed at the eccentric position. A mounting apparatus for a lighting fixture is disclosed that is excellent in wind pressure strength, lamp directionality, and design.

However, in Patent Document 2, the arm angle cannot be arbitrarily adjusted at the joint between the arm portion and the pole. For this reason, in Patent Document 3, an adapter that is provided at the base column portion and at the tip of the base column portion so as to be able to continuously attach the arm to the pole at an arbitrary angle and is rotatable with respect to the base column portion. , A fixing means provided at the tip of the adapter part, for fixing the adapter part to the base pillar part at an arbitrary rotational position, and an arm for attaching a lighting fixture that covers the fixing means and is fixed to the tip of the adapter part An illumination pole having a portion is disclosed.
Japanese Patent Laid-Open No. 9-320338 Japanese Utility Model Publication No.59-11371 No. 7-51689

  However, even in the invention of Patent Document 3, there is a possibility that a screw, which is a fixing means used when fixing the adapter part to the base pillar part at an arbitrary rotational position, may be exposed to the outside of the pole. In the form, this screw is made a countersunk screw so that it is not noticeable, but since it is exposed outside the pole and adapter, it cannot be said that the appearance has been sufficiently improved.

  Therefore, the present invention provides an illuminating device that is improved in appearance without exposing a screw or the like when the arm is attached to the pole, and that can be attached at an arbitrary angle for attaching the arm to the pole.

  The lighting device according to the first aspect of the present invention has an attachment body provided with a fitting portion at the upper end portion, a wiring insertion hole at the center of the upper end surface, and at least one screw hole at an eccentric position of the upper end surface. A pole that has an arm cylinder fitted to the fitting portion of the pole on the bottom surface, a wiring insertion hole is formed in the bottom portion where the center of the fitting portion is fitted, and an arc-shaped elongated hole is provided in at least one place An arm body; at least one screw inserted through a slot in the bottom surface of the arm body and fastened to the screw hole on the upper end surface of the pole; an arm lid body covering the upper part of the arm body; A projector having a built-in electric lamp; a ballast housed in the arm body and stably lighting a discharge lamp built in the projector;

  In each of the following inventions, terms and technical meanings are as follows unless otherwise specified.

  The arm body allows a shape such as a box shape or a cylindrical shape as long as a projector is attached to the arm and the ballast can be accommodated in the arm. At this time, it is preferable that the area of the arm side surface is smaller than the area of the bottom surface of the arm in order to ensure sufficient wind pressure strength.

  Further, the shape and number of the long holes, the number of screw holes, the number of screws, and the like can be determined at an arbitrary adjustment angle. For example, the shape of the long hole is formed so that the angle of the arc is 90 degrees and two pieces are symmetric, four screw holes on the pole upper end surface are formed for every 90 degree angle, and two screws are gathered symmetrically. Thus, it can be rotated to an arbitrary angle of 360 degrees.

  According to a second aspect of the present invention, there is provided the lighting device according to the first aspect, wherein the bottom surface of the arm body is rectangular and the arm cylinder is disposed at the center of the bottom surface. Two projectors are installed.

  According to the first aspect of the present invention, there is provided an illuminating device in which a screw or the like is not exposed when the arm is attached to the pole, the appearance is improved, and the arm attached to the pole can be attached at an arbitrary angle. It is.

  According to the second aspect of the present invention, when the even number of projectors are attached to the pole via the arm while having the effect of the first aspect, the lamp and the ballast can be loaded in a balanced manner in the arm.

  The illumination device of the present invention will be described with reference to the drawings. In these drawings, the same or corresponding parts are denoted by the same reference numerals, and repeated descriptions are omitted or simplified. FIG. 1 is a perspective view of a lighting device according to an embodiment of the present invention, FIG. 2 is a side sectional view, FIG. 3 is a top view with an arm lid removed, and FIG. It is a principal part enlarged view which shows a pole attachment state.

  The projector 1 includes a projector main body 1a having an opening, a frame 1b attached to the opening, a translucent part 1c made of tempered glass attached to the frame, and an attachment 1d for rotatably attaching the main body 1a. . Inside the projector main body 1a, a reflector 1e and a socket 1f that open toward the opening are attached, and a high-pressure discharge lamp 2 is attached to the socket. Further, the mounting body 1d is mounted by a projector main body 1a and mounting screws 1g, and the projector 1 rotates up and down.

  The arm 3 is formed in a box shape and includes an arm main body 3a and an arm lid body 3b. The arm main body 3a and the arm lid body 3b are screwed (not shown) from above the arm 3. At this time, the area of the bottom surface of the arm body 3a is formed so as to be smaller than the area of the arm body side surface 3b in consideration of the wind pressure strength. An arm cylinder 3c is welded and attached to the center of the bottom surface of the arm body 3a. Also, a wiring insertion hole 3d is provided in the bottom surface of the arm body 3a, which is the center portion of the arm cylinder 3c on the bottom surface. The arm insertion arm 3d is located outside the wiring insertion hole 3d and inside the portion where the side surface of the arm cylinder 3c is attached. Two arc-shaped elongated holes 3e with the center of the cylinder 3c as the center are formed symmetrically with respect to the center of the arm cylinder 3c.

  In addition, two ballasts 5 are installed on both ends of the arm body 3a with the wiring insertion hole 3d interposed therebetween. And the light projector 1 is installed in the both ends of the side surface of the arm main body 3a. The projector 1 is fixed by two fixing screws 1h from the outside of the fixed cylinder 3g by inserting the mounting cylinder 1h formed on the mounting body 1d of the projector 1 into the fixed cylinder 3g fixed inside the side surface of the arm body 3a. The At this time, the projector 1 can be fixed by arbitrarily rotating 360 degrees in the axial direction of the fixed cylinder 3g. In this way, the fixing cylinder 3g and the fixing screw 1h rotate in the axial direction, and the projector 1 can be rotated up and down by the mounting screw 1g and the mounting body. The above can be arbitrarily irradiated, and the projection direction can also be adjusted arbitrarily.

  The pole 4 includes a fitting portion 4b having an outer diameter smaller than that of the pole body 4a at the upper end of the columnar pole main body 4a and fitting to a side surface without the arm cylinder 3c, and a wiring insertion hole 4c at the center on the upper end surface of the fitting portion. Also, an upper end plate 4e in which four screw holes 4d are formed radially is provided.

  Next, the attachment method of the illuminating device of this embodiment is demonstrated. First, the power supply wiring 6 is inserted through the standing pole 4 up to the wiring insertion hole 4c at the upper end. The ballast 5 is mounted inside the box-shaped arm body 3a, and two projectors 1 are mounted on the outer surface of the arm body 3a. The projector 1 and the ballast 5 are wired. The projector 1 is attached to the upper end of the pole so that the arm cylinder 3c on the arm body 3a side including the ballast 5 is fitted into the fitting portion 4b on the pole 4 side. Then, the wiring insertion hole 3d on the arm 3 side and the wiring insertion hole 4c of the pole upper end plate 4e are fitted, and the power supply wiring 6 extended from the wiring insertion hole 4c of the pole 4 upper end plate 4e is connected to the inside of the arm main body 3a. Inserted into. Then, the arm body 3a is adjusted to an arbitrary angle at the upper end of the pole 4, and two fixing screws 3f are fixed from the inside of the arm body 3a to the screw hole 4d of the pole upper end plate 4e through the elongated hole 3e of the arm body 3a. To do. In the present embodiment, four screw holes 4d at the upper end of the pole 4 are arranged every 90 °, and the elongated holes 3e of the arm main body 3a fitted to the four screw holes 4d are arranged so as to face each other by 90 ° in an arc shape. The arm 3 can be rotated 360 degrees with respect to the pole 4 and fixed at any angle. Further, the external appearance is improved without the mounting screws (not shown) being exposed to the outside of the pole 4. Finally, the upper opening of the arm body 3a to which the pole 4 is attached in this way is fixed by screwing with the arm lid 3b. At this time, mounting screws (not shown) are exposed to the outside of the arm lid 3b, but only mounting parts such as mounting screws (not shown) are exposed only on the upper surface of the arm lid 3b. Since the upper surface of the arm lid 3b is a position that cannot be seen by a pedestrian or a passerby during normal use, there is no problem in appearance. Further, if necessary, when the arm lid 3b is fixed to the arm body 3a, waterproofing is allowed by inserting a packing between the arm body 3a and the arm lid 3b. Further, when fixing the arm lid 3b to the arm main body 3a, a method such as fixing with an adhesive can be allowed in addition to screwing.

  According to the present embodiment, when the arm 3 is attached to the pole 4, screws and the like are not exposed, the appearance is improved, and the attachment angle of the arm 3 attached to the pole 4 can be attached at an arbitrary angle, When an even number of projectors 1 are attached to the pole 4 via the arm 3, the projector 1 and the stabilizer 5 can be loaded in the arm 3 in a well-balanced manner.

  Further, by providing the ballast 5 in the arm 3, the ball 4 must be formed thick for that purpose even when the ballast 5 is arranged in the pole 4 as in the prior art. In addition, when the ballast 5 is disposed in the vicinity of the projector 1, the weight above the arm 3 increases, and it is necessary to increase the thickness of the pole 4 in order to ensure sufficient wind pressure strength. In addition to the problem in appearance, it is possible to prevent the installation work of the pole 4 from becoming large and the cost of the pole 4 from increasing.

  Also, in the installation work, since the projector 1 is fixed to the arm 3 and the ballast 5 is built in, the installation work is simply attached to the pole 4, so that the installation work can be simplified.

  In the present embodiment, two projectors 1 are attached to the same side surface of the arm body 3a. However, the projector 1 can be attached to the opposite side surface or attached to the end side surface. Further, if the arm cylinder 3c is formed on one side of the arm 3 and the projector 1 is not provided on the opposite side, the number of the projectors 1 can be arbitrary. Further, by arranging the ballasts in the arm 3 in an even number such as four or six projectors 1 in a balanced manner, the same effects as in the present embodiment can be obtained.

The perspective view of the illuminating device of the 1st Embodiment of this invention. Similarly sectional drawing. Similarly, a top view from above the arm. The principal part sectional drawing explaining the attachment method of a pole and an arm similarly.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Floodlight, 2 ... Lamp 3 ... Arm 4 ... Pole 5 ... Stabilizer 3a ... Arm main body 3b ... Arm cover body 3f ... Fixing screw Long hole ... 3e

Claims (2)

A pole having a fitting portion provided with a fitting portion at the upper end portion, a wiring insertion hole formed in the center of the upper end surface, and at least one screw hole at an eccentric position of the upper end surface;
An arm body having an arm cylinder fitted to the fitting portion of the pole on the bottom surface, a wiring insertion hole formed in the bottom portion where the center of the fitting portion is fitted, and an arc-shaped elongated hole provided at least at one place; ;
At least one screw inserted through a long hole on the bottom surface of the arm body and fastened to a screw hole on the upper end surface of the pole;
An arm lid that seals the top of the arm body;
A floodlight mounted on the side of the arm body and containing a discharge lamp;
A ballast that is housed in the arm body and stably lights the discharge lamp built in the projector;
A lighting device characterized by comprising. 2. The arm body according to claim 1, wherein the bottom surface of the arm body is rectangular and the arm cylinder is disposed at the center of the bottom surface, and the same number of at least two ballasts and at least two projectors are installed with respect to the center. Lighting device

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