JP2013097986A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of adjusting an irradiation angle to a required angle and also securely fixing the fixture to a required angle.SOLUTION: The lighting fixture 10 includes a fixture body 11, an angle adjustment member 12, an arm 13, and fixing members 14. The fixture body 11 includes a light source 11c inside, and an arm axis support part 11g outside. The angle adjustment member 12 is arranged on the fixture body, and possesses a plurality of engaging holes 12b with a predetermined interval located on a locus of a circle centered around the arm axis support part. The arm 13, pivotally supported on the arm axis support part of the fixture body, possesses a long hole 13c formed in opposition to a plurality of the engaging holes of the angle adjusting member. The fixing member 14 engages the long hole of the arm with the engaging holes of the angle adjusting member.

Description

  Embodiments described herein relate generally to a lighting fixture capable of adjusting an irradiation angle.

  2. Description of the Related Art Conventionally, lighting fixtures such as a projector and an irradiator with an irradiation angle adjustment mechanism that are used as outdoor illumination such as a wall surface of a building or a signboard and that can adjust an irradiation direction have been commercialized.

JP 2005-276487 A Japanese Patent Laying-Open No. 2011-134472 (FIG. 3)

  In many cases, this type of illumination angle adjusting mechanism of a lighting fixture is configured by sandwiching a rotating plate with metal fittings and fixing it by friction, or by directly fixing a rotating shaft. In these configurations, when the fixing bolt is loosened, the angle adjusting portion is moved, and there is a possibility that the instrument body hits the arm or other structure and the instrument is damaged.

  For this reason, it is an important issue how to configure a lighting fixture that can adjust the irradiation angle to a required angle and can reliably fix the fixture to the required angle.

The present invention has been made in view of the above problems, and intends to provide a lighting apparatus that can adjust the irradiation angle to a necessary angle and can reliably fix the apparatus to the necessary angle. It is.

  The lighting apparatus of the embodiment includes an apparatus main body, an angle adjustment member, an arm, and a fixing member. The instrument body has a light source disposed therein and an arm shaft support portion on the outside. The angle adjusting member is provided on the instrument main body, and is positioned on a circular locus centering on the arm shaft support portion, and has a plurality of engagement holes formed with a predetermined interval. The arm has a long hole that is pivotally supported by the arm shaft support portion of the instrument body and is formed to face the plurality of engagement holes of the angle adjusting member. The fixing member engages the long hole of the arm and the engagement hole of the angle adjusting member.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to adjust an irradiation angle to a required angle, the lighting fixture which can fix a fixture to a required angle reliably can be provided.

The perspective view which shows the lighting fixture which is embodiment of this invention. The perspective view which similarly shows the angle adjustment mechanism of a lighting fixture. The angle adjustment mechanism of a lighting fixture is similarly shown, (a) is a perspective view which shows the state which removed the fixing means, (b) is a perspective view which shows a fixing means. The front view of the angle adjustment mechanism of a lighting fixture similarly. The angle adjustment mechanism of a lighting fixture is shown similarly, (a) is a front view which shows the state which installed the fixture main body vertically, (b) is the front view which shows the state which installed the fixture main body toward diagonally downward. The front view which similarly shows the angle adjustment mechanism of a lighting fixture, and shows the state installed with the fixture main body facing diagonally upward. The side view which shows the state which similarly installed the lighting fixture in order to illuminate the wall surface of a building. The modification of a lighting fixture is shown similarly, (a) is a front view of the angle adjustment mechanism in a 1st modification, (b) is a section showing the 2nd modification along a bb line of this (a) figure. Figure.

  Hereinafter, an embodiment of a lighting apparatus will be described with reference to the drawings. The present embodiment constitutes a lighting fixture as a projector that illuminates the wall surface of a building. As shown in FIGS. 1 to 6, a lighting fixture 10 includes a fixture main body 11 in which a light source 11c is disposed, An angle adjustment member 12 provided in the instrument main body 11, an arm 13 pivotally supported by the instrument main body 11, a fixing member 14 that engages the arm 13 and the angle adjustment member 12, and the like.

  As shown in FIG. 1, the instrument main body 11 is configured as a case body having a strong rectangular box shape made of aluminum die cast or the like, and is provided with a light emitting portion 11a on the front side and an electrical component 11b on the rear side. The light emitting unit 11a has a case body with a front surface opened, and a light source 11c is disposed on the bottom surface of the case body. In this embodiment, the light source is composed of LED modules 11c having light emitting diodes (hereinafter referred to as “LEDs”), and a plurality of, in this embodiment, six LED modules 11c are arranged at substantially equal intervals. Yes.

  In the figure, 11d is a translucent panel made of transparent tempered glass provided on the open front surface of the light emitting section 11a, and the light emitted from the LED module 11c is transmitted through the perforated panel 11d and radiated outward. Is done. Moreover, 11e is a radiation fin integrally formed on the back side of the light emitting unit, and dissipates heat generated when the LED module 11c is turned on to the outside to suppress a decrease in light emission efficiency of the LED.

  The electrical part 11b has a case shape with the rear surface opened, and a power source part and a lighting device (not shown) for controlling the lighting of the LEDs are arranged in the case, and a lid 11f made of aluminum die cast or the like is used. It is blocked. On both side surfaces of the instrument main body 11 configured as described above, arm shaft support portions 11g each including a screw hole for rotatably supporting an arm 13 described later are formed.

  The angle adjustment member 12 is a member that forms an angle adjustment mechanism of the instrument main body 11. In this embodiment, the angle adjustment member 12 is composed of an angle adjustment plate 12 made of a thick steel plate that is configured separately from the instrument main body 11. . As shown in FIG. 4, the angle adjusting plate 12 is formed in a substantially fan-like shape, and is positioned on a locus of a circle “a” centering on a shaft 12 a that is a main part of the fan, with a predetermined interval, this embodiment. Then, the plurality of engagement holes 12b are formed with substantially equal intervals.

  In the present embodiment, 14 engagement holes 12b are formed as round holes with taps. Furthermore, the interval pitch of the engagement holes 12b was such that the angle α1 about the shaft 12a was about 10 °, and 14 round holes were formed at equal intervals. Therefore, the angle α2 formed by the engagement holes 12b located at both ends is about 130 °. In other words, the irradiation angle can be adjusted over an angle range of about 130 °.

  The angle adjusting plate 12 configured as described above is firmly attached to one side surface of the instrument body 11 by means such as screwing or welding. That is, the angle adjustment plate 12 positions the shaft 12a so as to be coaxial with the arm shaft support portion 11g of the instrument body 11, and further, a line xx formed by one side of the fan-shaped angle adjustment plate 12 forms a rectangular shape. It is positioned so as to be substantially parallel to the longitudinal ridge line yy of the instrument body 11 and fixed to the instrument body 11 (FIG. 4). The angle adjustment plate 12 may be formed integrally with the instrument body 11 by aluminum die casting or the like.

  The arm 13 constitutes an angle adjustment mechanism of the instrument main body 11 together with the angle adjustment plate 12 and is a member for installing the instrument main body 11 in the installation portion. As shown in FIG. The steel plate is bent into a substantially U shape. At the center of the tip of the U-shaped leg portions 13a and 13a, a rotation hole 13b is formed, which is a through hole for pivotally supporting the arm shaft support portion 11g of the instrument body 11 (FIG. 3). (A)).

  In one leg portion 13a of the arm 13, a long hole 13c without a tap is formed so as to penetrate a plurality of engagement holes 12b formed in the angle adjusting plate 12. In the present embodiment, as shown in FIG. 4, the long holes 13c are formed to have a length that crosses (overlaps) the interval pitch (angle 10 °) of the engagement holes 12b formed at equal intervals. . That is, the long hole 13c has an arc shape along the locus of a circle a centering on the shaft 12a (arm shaft support portion 11g), and the arc pitch l1 is an interval pitch (angle) of the engagement holes 12b formed of round holes. 10 °).

  Further, as shown in FIG. 1, the U-shaped main body portion is formed by penetrating three support holes 13d. By this support hole 13d, the arm 13 is supported by the portion to be installed, and the instrument body 11 is installed.

  As shown in FIG. 1, the arm 13 configured as described above has one leg portion having a long hole 13 c positioned on the side surface to which the angle adjusting plate 12 is fixed, and both leg portions 13 a and 13 a of the arm 13. Is straddled on both sides of the instrument body 11. Then, each rotation hole 13b of the arm 13 is matched with the arm shaft support portion 11g of the instrument body 11, and the bolt 15 is screwed and fixed to the arm shaft support portion 11g formed of a screw hole (FIG. 2). The bolt 15 is fixed so that the arm 13 can be rotated from the bolt 15 to the left and right over a predetermined angle by being screwed into the arm shaft support portion 11g with a washer 15a and a spring washer 15b interposed. Thereby, the long hole 13c of the arm 13 and the engagement hole 12b of the angle adjusting plate 12 respectively positioned on the locus of the circle a are positioned so as to be matched and opposed (FIG. 4).

  The fixing member 14 is a member for engaging the arm 13 and the angle adjusting plate 12, in other words, a member for fixing the irradiation angle of the instrument main body 11 to a necessary angle. In the present embodiment, FIG. As shown in FIG. 5, the fixing bolt 14a is screwed into the engaging hole 12b with a tap, and the seat plate 14b with a nut. In the seat plate 14b, an insertion hole 14b1 into which the tip end portion of the fixing bolt 14a is inserted is formed at one end, and a nut 14b2 is welded so as to match the insertion hole 14b1 (FIG. 2). A bolt 15 is inserted into the other end portion, and a fixing hole 14b3 for fixing the seat plate 14b to the arm shaft supporting portion 11g by the bolt 15 so as to be rotatable is formed.

  As shown in FIG. 2, the insertion hole 14 b 1 of the seat plate 14 has the insertion hole 14 b 1 when the fixing hole 14 b 3 is fixed to the arm shaft support 11 g of the instrument body 11 (with the arm 13 interposed) as shown in FIG. The arm 13 is formed at a position that matches the long hole 13c, in other words, at a position that matches the engagement hole 12b of the angle adjusting plate 12 that matches the long hole 13c. As a result, by screwing the fixing bolt 14a into the nut 14b2 of the seat plate 14b, the distal end portion of the fixing bolt 14a can pass through the long hole 13c of the arm 13 and be screwed into the tapped engagement hole 12b.

  And the instrument main body 11 and the arm 13 configured as described above can select a fixed angle of the arm 13 with respect to the instrument main body 11 by selecting any one of 14 engagement holes 12b into which the fixing bolts 14a can be screwed. That is, the irradiation angle of the instrument body 11 can be adjusted. In this embodiment, 14 engagement holes 12b are formed at an interval pitch of about 10 °, so the engagement holes 12b are selected every 10 ° (in 10 ° steps) and the fixing bolts 14a are engaged. By screwing and fixing to the joint hole 12b, the irradiation angle of the instrument body 11 can be adjusted over an angle range of about 130 °. For example, as shown in FIG. 6, it becomes possible to install the instrument body 11 facing upward.

  Further, in the present embodiment, the irradiation angle can be further finely adjusted and fixed at each fixing position every 10 ° by the selected engagement hole 12b. That is, as shown in FIG. 4, the engagement hole 12b is formed on a locus of a circle a centering on the shaft 12a (arm shaft support portion 11g), and the long hole 13c is also in an arc shape along the locus of the same circle a. And the length l1 of the arc is substantially equal to the interval pitch of the engagement holes 12b made of round holes.

  For this reason, as shown in FIG. 5A, the left end and the right end of the long hole 13c match the two adjacent left and right engagement holes 12b1, 12b2, and either one of the engagement holes, in this example, It is fixed by screwing a fixing bolt 14a into the engagement hole 12b2 at the left end. In this state, the instrument body 11 is installed in a substantially vertical direction.

  In this state, in order to finely adjust the inclination of the instrument body, the instrument body 11 is tilted to the left in FIG. 5A, and is rotated over an angle range of 10 ° around the arm shaft support portion 11g. As a result, the angle adjusting plate 12 rotates in the direction of arrow A in the figure, and the fixing bolt 14a moves to the right along the long hole 13c of the arm as shown in FIG. Lock to the right end. In this state, the fixing bolt 14a is fixed by screwing into the engaging hole 12b. Thereby, the instrument body 11 can be installed with fine adjustment in a state where the instrument body 11 is inclined obliquely downward at an angle of about 10 °.

  Further, in this fine adjustment, the instrument body 11, that is, the angle adjustment plate 12 is rotated by the length of the long hole 13 c (angle of 10 °) similarly in all the 14 adjacent engagement holes 12 b. Can be moved. Thereby, the instrument body 11 can be adjusted to any required angle over an angle range of about 130 ° by sequentially selecting the 14 engagement holes 12b and finely adjusting each of the selected positions. Can do.

  And the instrument main body 11 can be reliably fixed to arbitrary required angles by screwing the fixing bolt 14a into the engagement hole 12b. This fixing means is not a configuration in which the rotating plate is fixed by friction as in the prior art, or a configuration in which the rotating shaft is directly fixed, but can be reliably fixed by screwing the fixing bolt 14a into the engaging hole 12b. . In particular, according to the present embodiment, the fixing bolt 14 a is screwed into the nut 14 b fixed to the seat plate 14, and the seat plate 14 is fixed to the arm shaft support portion 11 b by the bolt 15.

  For this reason, the load concerning the fixing bolt 14 a, that is, the load of the instrument body 11 is transmitted from the fixing bolt 14 a to the seat plate 14 and further to the bolt 15. Thereby, it becomes possible to disperse | distribute the load of the instrument main body 11 to the fixing bolt 14a and the volt | bolt 15, and it becomes possible to fix still more firmly and reliably. Even if the fixing bolt 14a is somewhat loosened, it is only rotated by the length of the long hole 13c, that is, by an angle of 10 °, and the instrument body 11 hits an arm or other structure and damages the instrument. There is very little fear of doing.

  The lighting fixture 10 which can adjust an irradiation angle is comprised by the above, and it is installed and used in order to illuminate the wall surface of a building as follows. That is, as shown in FIG. 7, the luminaire 10 has the main body portion of the arm 13 mounted on the base installed at a low position such as the ground to illuminate the wall surface 21 of the building 20, and the support hole It is firmly attached with bolts or the like using 13d. The arm 13 is installed in a substantially vertical direction.

  In the state installed as described above, the angle of inclination of the instrument body 11 with respect to the arm 13 is adjusted to set the irradiation angle of the instrument. First, the fixing bolt 14a previously screwed into the engagement hole 12b is removed from the engagement hole 12b. At this time, the fixing bolt 14a is not removed from the nut 14b2 of the seat plate 14b.

  And the instrument main body 11 is rotated centering on the arm axis | shaft support part 11g, and the engagement hole 12b applicable to the angle to set is selected. Thereby, the selected engagement hole 12b and the long hole 13c of the arm 13 match. In this state, the fixing bolt 14a is screwed into the engagement hole 12b through the long hole 13c. This screwing is set in a temporarily fixed state where the screwing is not completely firmly performed. Then, the instrument body 11 is further tilted, and the angle adjustment plate 12 is rotated over the length of the long hole 13c (angle 10 °) to finely adjust the angle. Finally, the fixing bolt 14a is screwed more firmly into the engagement hole 12b. Thereby, the fixture body 11 is securely fixed to the arm 13 at a predetermined angle, in this embodiment, at an angle directed obliquely upward, and the setting of the irradiation angle of the lighting fixture 10 is completed, and the wall surface of the building 20 21 can be illuminated.

  As described above, in the present embodiment, the long hole 13c is formed to have a length straddling the two adjacent engagement holes 12b1 and 12b2, but the two engagement holes are formed as shown in FIG. You may comprise so that only one and a half may be straddled, without straddling. According to this, fine adjustment can be performed over an angle range of the angle α3, in the present embodiment, an angle range of about 5 °.

  In this embodiment, the arm 13 and the angle adjusting plate 12 are fixed by screwing the fixing bolt 14a into the tapped engaging hole 12b. However, as shown in FIG. 12b may be formed in a hole without a tap, and may be configured to be fixed by a bolt 14a 'and a nut 14b2' that pass through the long hole 13c of the arm 13 and the engagement hole 12b. According to this configuration, the seat plate 14b can be omitted.

  In the present embodiment, the angle adjustment mechanism is provided on one side of the instrument body. However, in the case of a large-sized instrument or the like, the angle adjustment mechanism is provided on both sides of the instrument body, so that more reliable angle adjustment and instrument can be achieved. You may comprise so that fixed fixation may be made. Further, the lighting fixture is not limited to a projector, and may be a tunnel lighting fixture, a road light, a security light, a street light, and various projectors and irradiators used in an indoor studio. The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and various design changes can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Lighting fixture 11 Appliance main body 11c Light source 11g Arm axial support part 12 Angle adjustment member 12b Engagement hole 13 Arm 13c Long hole 14 Fixing member

Claims (2)

An instrument body having a light source disposed therein and having an arm shaft support portion on the outside;
An angle adjusting member that is provided on the instrument main body, is located on a circular locus centering on the arm shaft support, and has a plurality of engagement holes formed at a predetermined interval;
An arm having a long hole that is pivotally supported by the arm pivot of the instrument body and is formed to face the plurality of engagement holes of the angle adjusting member;
A fixing member for engaging the elongated hole of the arm with the engaging hole of the angle adjusting member;
The lighting fixture characterized by comprising. The plurality of engagement holes are formed in the angle adjusting member at equal intervals, and the long holes of the arms are formed to have a length that spans the interval pitch of the engagement holes. lighting equipment.

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