JP2007242479A - Lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting fixture of which fall out can be surely prevented. <P>SOLUTION: In a pole fixing chamber 4, a round bar 17 penetrating the pole P and a wire side fixing part 42 provided near an external wall of a lower barrier wall 12 are connected by a fall-out preventing wire 40. On the other hand, in a lamp chamber 3, a combination glass holder 50 supports from a glass holding side fixing part 55 provided near an inner wall of the lower barrier wall 12 to a top end alongside a circumference of the glass plate 30. Moreover, a bottom wall part 11 for the glass holding side fixing part 55 and the wire side fixing part 42 is made to be thicker and has a higher rigidity than other areas. Furthermore, these parts are combined with each other with the lower barrier wall 12 in between. As a result, the pole P and the top end of the lamp chamber 3 are combined by the fall-out preventing wire 40, the wire side fixing part 42, the glass holding side fixing part 55 and the combination glass holder 50, and fall out of the lighting fixture can be prevented. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lighting fixture.

In some lighting fixtures for road lighting, a lighting fixture and a pole to which the lighting fixture is attached are connected by a wire for preventing fall (see, for example, Patent Document 1). One end of the wire is connected to the pole, and the other end is fixed at an appropriate location in the lighting fixture. According to such a configuration, even when an impact is applied, for example, by an automobile colliding with the pole, the lighting fixture can be prevented from falling even when the mounting portion of the lighting fixture with respect to the pole is damaged.
Japanese Utility Model Publication No. 62-169411

  However, a lamp chamber in which a lamp is accommodated in a lighting fixture is generally in a watertight state in order to prevent entry of dust, rain, and the like from the outside. Therefore, in order to ensure the watertight state of the lamp chamber, the end of the wire on the side of the luminaire must be fixed in front of the lamp chamber (pole side).

  In such a configuration, for example, if a significant impact is applied to the pole due to a serious traffic accident or a large earthquake, and the impact is transmitted to the tip side rather than the fixed position of the wire, the lighting fixture may be broken. There is still a risk of falling. For this reason, more reliable safety measures are required.

  This invention is made | formed in view of an above-described situation, The objective is to provide the lighting fixture which can prevent fall reliably.

  The luminaire of the present invention is provided with a main body portion, a lamp, a lamp chamber provided in the main body portion for accommodating the lamp, and provided in the main body portion outside the lamp chamber and for supporting the main body portion. An attachment portion to which the support member can be attached, a partition wall that partitions the lamp chamber and other regions in the main body portion, one end portion is fixed to the outside of the lamp chamber in the main body portion, and the other end portion is the A first fall prevention member coupled to the support member; one end of the first fall prevention member is fixed in the vicinity of the mounting portion in the lamp chamber and in the vicinity of the partition; and the other end is positioned more than the fixed position of the one end A second fall prevention member fixed at a position spaced from the mounting portion; a first fixation position at which one end of the first fall prevention member is fixed; and one end of the second fall prevention member. Part is solid A second fixed position and the connecting portion connecting the to be, those with a.

  In the present invention, the connecting portion may have increased rigidity by increasing the thickness of the portion of the outer wall portion of the main body portion over the fixed position of the one end portion of the two fall prevention members as compared with the other portions. This is preferable because it is not necessary to increase the number of parts as compared with the case where the connecting portion is formed of a separate member.

  Further, the second fall prevention member may also serve as a pressing member for suppressing a transmission plate that is fitted to an emission port that emits light from the lamp. This is preferable because the number of parts can be reduced.

  According to the present invention, the first fall prevention member arranged outside the lamp chamber and connected to the support member, and the second fall prevention member arranged inside the lamp chamber are provided, and the two fall prevention members are provided. There is a connection at the connection. According to such a configuration, it is possible to connect the support member to the lamp chamber with the two fall prevention members and the connection portion, and thus it is possible to prevent the lighting apparatus from falling even when the lamp chamber portion is damaged. be able to.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment embodying the present invention will be described in detail with reference to FIGS. FIG. 1 shows a luminaire 1 embodying the present invention. The luminaire 1 is used for lighting a road, and is used by being attached to an upper portion of a pole P standing on the side of the road.

  The luminaire 1 is provided with a lamp L and a lamp case 2 (corresponding to the main body of the present invention) that accommodates the lamp L. The lamp case 2 is formed in the shape of a flat hermetic container as a whole, and has an elliptical lamp chamber 3 as viewed from the upper surface side, and a pole mounting chamber joined to one end portion in the major axis direction of the ellipse in the lamp chamber 3. 4 are integrally formed (see FIGS. 2 and 3). The lamp case 2 is substantially divided into two in the thickness direction, the lower case 10 being the lower side and the upper case 20 being the upper side. In the following description, the side (the right side in FIG. 2) on which the pole P is attached in the luminaire 1 is described as the pole side, and the opposite side (the left side in FIG. 2) is described as the tip side.

  The lower case 10 is formed in a shallow container shape whose upper side is opened, for example, by aluminum die casting. In the lower case 10, a light emitting exit 11 </ b> A formed in a substantially elliptical shape is formed in the bottom wall portion 11 in the lamp chamber 3. A lower partition 12 for separating the lamp chamber 3 from a region outside the lamp chamber 3 is erected upward around the emission port 11A.

On the inner side of the lower partition 12, glass fixing ribs 13 are provided so as to protrude upward along the entire circumference, and the inner circumference thereof is made slightly larger than the outer circumference of the emission port 11 </ b> A. Inside the glass fixing rib 13, a substantially elliptical glass plate 30 that transmits the light emitted from the lamp L is fitted. A rubber glass packing 31 is attached to the periphery of the glass plate 30.
The glass plate 30 is fixed to the lower case 10 from the inside by a connecting glass presser 50 (corresponding to the second fall prevention member and the presser member of the present invention) and a glass presser 57.

  Of the two peripheral edges of the glass plate 30, the arc portion in one of the two semi-ellipses obtained by dividing the ellipse along the major axis is fixed by the connecting glass presser 50. The connecting glass presser 50 is made of, for example, a synthetic resin, and includes a long strip-like connecting portion 51, a plurality of stopper pieces 52 provided on the connecting portion 51, and a plurality of pressing pieces 53 (FIG. 7). (See also FIG. 8). The plurality of stopper pieces 52 are provided at one of the pair of long sides at the connecting portion 51 at an equal pitch, and protrude in a direction perpendicular to the plate surface direction of the connecting portion 51. Further, the pressing piece 53 protrudes at a position corresponding to the stopper piece 52 on the other long side portion in a direction perpendicular to the plate surface direction of the connecting portion 51 and in a direction opposite to the stopper piece 52. The width of the connecting portion 51 is substantially equal to the length obtained by subtracting the thickness of the glass plate 30 and the glass packing 31 from the protruding height of the glass fixing rib 13.

  The connecting glass presser 50 is configured such that the long side portion on the side where the presser piece 53 is provided is located on the inner side of the glass fixing rib 13 and the presser piece 53 faces the inner side of the arc. Is attached along the inner peripheral surface of the glass fixing rib 13. In this state, the pressing piece 53 presses the upper surface of the glass packing 31 from above, and the stopper piece 52 is placed on the upper end surface of the glass fixing rib 13 (see also FIG. 4). The stopper plate 52 is screwed to the upper end surface of the glass fixing rib 13 so that the glass plate 30 is fixed by the connecting glass presser 50.

The connecting glass retainer 50 has an end on the pole side extending to the vicinity of the lower partition wall 12, and a fixed piece 54 is projected in the horizontal direction from the upper long side at the end edge. .
On the other hand, in the vicinity of the lower partition 12 in the lamp chamber 3, a part of the bottom wall portion 11 is thickened to provide a substantially block-shaped glass pressing side fixing portion 55 (corresponding to the connecting portion of the present invention). It has been. An end portion on the pole side of the glass pressing side fixing portion 55 is connected to the lower partition wall 12. The fixing piece 54 of the connecting glass presser 50 is fixed to the upper surface of the glass presser side fixing portion 55 with a glass presser bolt 56.

  Further, the arc portion in the other semi-ellipse of the periphery of the glass plate 30 is fixed by three glass pressers 57. The glass presser 57 is formed in a crank shape in which the upper end portion and the lower end portion of the resin plate extending vertically are bent in the horizontal direction and in opposite directions. The upper side and the lower side of the crank are a stop piece 58 and a holding piece 59, respectively. Then, the glass plate 30 is fixed by applying the pressing piece 59 to the upper surface of the glass packing 31 and screwing the stopper piece 58 to the upper end surface of the glass fixing rib 13.

  In the lamp chamber 3, a cylindrical socket 14 opening toward the tip side is fixed at a position slightly closer to the pole side than the exit port 11A. A lamp L is attached to the socket 14. As the type of the lamp L, any lamp can be used as long as it is normally used for a road lighting device. For example, a sodium lamp, a metal halide lamp or the like is used.

  In the lower case 10, an insertion cylinder 15 (corresponding to the mounting portion of the present invention) for inserting the tip of the pole P is provided in the pole mounting chamber 4 (see FIGS. 2 and 3). The insertion cylinder 15 has a cylindrical shape extending in the vertical direction, and the upper end surface thereof is closed by the ceiling portion 15A, and the lower end surface thereof is opened to communicate with the external space. On the upper surface of the ceiling portion 15 </ b> A, a wire insertion portion 16 is provided which is formed in a substantially quadrispherical dome shape and communicates the internal space of the pole mounting chamber 4 and the internal space of the insertion tube 15. Further, a tapped hole for attaching a fixing bolt 18 for fixing the luminaire 1 is provided on the outer peripheral wall of the insertion tube 15.

  The pole P has a hollow pipe shape, and its upper end is inserted into the insertion tube 15 from below. The pole P is provided with a shaft hole at a position aligned with the tap hole of the insertion cylinder 15. Then, the fixing bolt 18 is inserted into the tapped hole of the insertion tube 15 and the shaft hole of the pole P and screwed, so that the pole P is fixed inside the insertion tube 15 in a retaining state (see FIG. 5 together). See).

  A round bar 17 is welded inside the pole P. A fall prevention wire 40 (corresponding to the first fall prevention member of the present invention) is attached to the round bar 17. The fall prevention wire 40 is a wire rope provided with loops 41 at both ends, and is wound around the round bar 17 and then tied to the round bar 17 by tightening through the other end in one loop 41. Yes.

  In the pole mounting chamber 4, a substantially block-shaped wire side fixing portion 42 (corresponding to the connecting portion of the present invention) is provided in the vicinity of the lower partition wall 12 by thickening a part of the bottom wall portion 11. Yes. The end of the wire side fixing portion 42 on the front end side is connected to the back surface position of the lower partition 12 where the glass pressing side fixing portion 55 is connected. That is, the glass pressing side fixing portion 55 and the wire side fixing portion 42 are connected to each other with the lower partition 12 interposed therebetween. The other loop 41 of the fall prevention wire 40 is fixed to the upper surface of the wire-side fixing portion 42 with a wire fixing bolt 43. Thereby, the connection glass presser 50 and the fall prevention wire 40 are connected via the glass presser side fixing portion 55 and the wire side fixing portion 42.

  The upper case 20 is formed in a shallow container shape whose lower side is opened by, for example, aluminum die casting (see FIG. 2). In the upper case 20, the upper partition wall 21 is suspended at a position aligned with the lower partition wall 12 of the lower case 10. The partition wall packing 22 is provided at the lower end edge of the upper partition wall 21. When the upper case 20 and the lower case 10 are assembled, the upper end edge of the lower partition wall 12 is engaged with the partition wall packing 22, The inside of the lamp chamber 3 is kept watertight.

  A reflector 23 is fixed to the ceiling surface of the upper case 20. The reflecting plate 23 is a concave mirror for reflecting the light from the lamp L and projecting the light downward, and is made of a material that reflects light such as aluminum and has a concave bottom surface. And the opening shape of the lower end is made into the elliptical shape substantially the same shape as the glass plate 30. FIG.

  The upper case 20 is connected to the lower case 10 so as to be openable and closable by a hinge portion 24 provided at an end on the pole side. In addition, a latch is provided at the tip of the lower case 10 and the upper case 20 so that the upper case 20 can be locked to the lower case 10 so as not to be opened.

  Next, the operation and effect of the present embodiment configured as described above will be described.

  The luminaire 1 is used by being attached to the upper portion of a pole P erected on the side of the road with the side provided with the exit port 11A as the lower surface side. When the luminaire 1 is turned on, the light from the lamp L is emitted from the exit port 11A through the glass plate 30 and illuminates the road.

  Here, when a large impact is applied to the pole P and the lamp case 2 of the luminaire 1 is cracked, there is a possibility that a portion on the tip side from the position where the crack has occurred falls to the road. However, in the present embodiment, in the pole mounting chamber 4, the round bar 17 passed through the pole P and the wire side fixing portion 42 provided near the outer wall of the lower partition 12 (wall surface on the pole mounting chamber 4 side). Are connected by a fall prevention wire 40. On the other hand, in the lamp chamber 3, the connection from the glass pressing side fixing portion 55 provided near the inner wall (wall surface on the lamp chamber 3 side) of the lower partition wall 12 to the vicinity of the tip side along the peripheral edge of the glass plate 30 is connected. They are connected by a glass presser 50. In addition, the glass holding side fixing part 55 and the wire side fixing part 42 are made to be more rigid than the other parts by making the bottom wall part 11 thick, and these sandwich the lower partition wall 12 therebetween. Are connected to each other. As a result, the part from the pole P to the vicinity of the tip of the lamp chamber 3 is connected by the fall prevention wire 40 -the wire side fixing part 42 -the glass pressing side fixing part 55 -the connecting glass pressing part 50. Therefore, even when the lamp case 2 is cracked, the damaged part of the lighting fixture 1 and the pole P are connected by the fall prevention wire 40 -the wire side fixing part 42 -the glass pressing side fixing part 55 -the connecting glass pressing part 50. As a result, the damaged portion can be tied to the pole P.

  Moreover, the wire side fixing | fixed part 42 and the glass holding | suppressing side fixing | fixed part 55 which connect between the fall prevention wire 40 and the connection glass presser 50 make the thickness of the bottom wall part 11 in the lower case 10 larger than another part. Therefore, it is not necessary to increase the number of parts.

  Further, the connecting glass retainer 50 has both a role of preventing the lighting device 1 from falling and a role of fixing the glass plate 30. Thereby, the number of parts can be reduced.

<Other embodiments>
The technical scope of the present invention is not limited by the above-described embodiments, and, for example, those described below are also included in the technical scope of the present invention.

(1) In the above embodiment, the wire side fixing part 42 and the glass pressing side fixing part 55 are made rigid by making the thickness of the bottom wall part 11 in the lower case 10 larger than the other parts. For example, the rigidity may be increased by reinforcing the portion with another member.

(2) In the above embodiment, the connecting glass retainer 50 has both the role of preventing the lighting fixture 1 from falling and the role of fixing the glass plate 30, but the second fall prevention member installed in the lamp chamber May be formed of a member different from the glass retainer.

(3) In the above embodiment, the insertion tube 15 for inserting the tip of the pole P opens to the lower side (irradiation surface side) of the lamp case 2, and the pole P is attached from the lower side of the lighting fixture 1. However, as shown in FIG. 9, in the lighting fixture 60 of the type in which the insertion tube 61 opens on the side surface of the lamp case 62 (the surface side intersecting the irradiation surface) and is attached from the side of the lighting fixture 60. Similar to the above embodiment, the lighting fixture 60 is dropped by connecting the pole P to the vicinity of the tip of the lamp chamber 3 by the fall prevention wire 40 -the wire side fixing portion 42 -the glass holding side fixing portion 55 -the connecting glass holding portion 50. It is possible to adopt a configuration that prevents the above.

(4) In the second fall prevention member (in the above embodiment, the connecting glass presser 50), the fixing position of the other end is not limited to that in the above embodiment. That is, as shown in the above embodiment, the other end of the second fall prevention member is preferably fixed at the tip position (position far from the mounting portion) as much as possible in the lamp chamber, but at least the other end Is fixed at a position further away from the mounting portion with respect to one end fixed in the vicinity of the partition wall, the lamp case is cracked at any position between the support member and the other end. When this occurs, the lighting apparatus can be prevented from falling.

The perspective view which shows a mode that the lighting fixture of the said embodiment was attached to the pole. Side sectional view of lighting equipment Top view of lower case Partially enlarged side sectional view showing a state in which the glass plate is fixed by the connecting glass presser Partial enlarged top view of the pole mounting chamber in the lower case AA line sectional view of FIG. Top view of connected glass presser Side view of connecting glass presser In the lighting apparatus of another embodiment, a partially enlarged top view of the pole mounting chamber portion in the lower case

Explanation of symbols

1 ... Lighting fixture 2 ... Lamp case (main part)
3 ... Lamp chamber 11A ... Outlet 12 ... Lower partition (partition)
15 ... Insertion tube (mounting part)
21 ... Upper partition (partition)
30 ... Glass plate (transmission plate)
40: Fall prevention wire (first fall prevention member)
42 ... Wire side fixing part (connection part)
50. Connecting glass presser (second fall prevention member / pressing member)
55 ... Glass holding side fixing part (connection part)
L ... Lamp P ... Pole (support member)

Claims (3)

The main body,
A lamp,
A lamp chamber that is provided in the main body and accommodates the lamp;
An attachment portion provided outside the lamp chamber in the main body portion and capable of attaching a support member for supporting the main body portion;
A partition wall that divides the lamp chamber from another region in the main body;
A first fall prevention member having one end fixed to the outside of the lamp chamber in the main body and the other end connected to the support member;
One end of the lamp chamber is fixed in the vicinity of the mounting portion in the lamp chamber and in the vicinity of the partition wall, and the other end is fixed at a position farther from the mounting portion than the fixing position of the one end portion. 2 fall prevention members,
A connecting portion connecting a first fixed position where one end of the first fall prevention member is fixed and a second fixed position where one end of the second fall prevention member is fixed;
A lighting fixture comprising:   The lighting fixture according to claim 1, wherein the connection portion is provided by making a thickness of an outer wall portion of the main body portion larger than that of other portions. The main body is provided with an emission port that is provided in the lamp chamber and emits light from the lamp, and a transmission plate that is fitted to the emission port and transmits light from the lamp,
The lighting fixture according to claim 1, wherein the second fall prevention member is a pressing member that fixes the transmission plate to the emission port.

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