JP5516214B2 - Connection structure of lighting equipment - Google Patents

Description

  The present invention relates to a connection structure for a lighting fixture.

  Conventionally, there is a lamp body that is attached to the tip of the column, a terminal block that connects the power cable (power cable) that extends from the column to the lamp body, and the power cable (power cable) is pressed in the vicinity of this terminal block. In a lighting fixture equipped with a clamp, a round rod for wire hooking is arranged in advance in the radial direction at the cylindrical tip of the column, and both ends of the round rod are welded to the inner peripheral surface of the tip. Hang one end of the fall-prevention wire (fall-prevention wire) on a round bar and attach the other end of the fall-prevention wire to the lamp body using a fixing screw. There is what was planned (for example, refer to Patent Document 1).

JP 2004-79241 A

However, in the above luminaire, when connecting the power cable extending from the column to the terminal block, it is necessary to handle the power cable with care not to bend it excessively, and the work is complicated. There's a problem. In addition, there is a problem that the round bar and the fall prevention wire may interfere with the work and may deteriorate the workability.
The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a connection structure for a lighting fixture that is easy to connect or remove a power cable and has good workability.

The present invention integrally includes an attachment portion having a clamp portion for attachment to a support and a waterproof light source accommodation portion for accommodating a light source, and the inside of the support is extended and wired inside the attachment. comprising a terminal block for connecting the power cable that the holder, at a position closer to the front SL terminal block side opening caries Chi of the clamping portion, and fixed to the end of the clamping portion, the power cable Extending from the opening of the column along the inner surface of the column, holding the extended power cable in the holder, bending the power cable held by the holder and connecting to the terminal block Features.
The power cable held by the holder may be curved, and a sub-holder that holds the curved power cable may be disposed integrally with the holder.

In the present invention, since the luminaire is distinguished between an attachment portion having a clamp portion for attaching to a support and a light source housing portion of a waterproof structure that accommodates a light source, when attaching the luminaire to the support outdoors, Only by opening the lid of the mounting portion without opening the light source housing portion side, the connection work between the support column and the clamp portion can be performed. For example, when a long-life light source such as an LED is used, the light source housing is maintenance-free. In the case of maintenance free, there is no need to replace the lamp as in the conventional case, and it is not necessary to open the light source housing part one by one, so the water tightness of the light source housing part is maintained for a long period of time as shipped from the factory. it can.
In addition, since the mounting part is equipped with a terminal block for connecting the power cable that extends inside the support column, when installing this lighting fixture, first the support column and clamp part The connection work is then performed, and then the connection work of the power cable is performed, and the installation work is simplified. In the power supply cable, first, one end of the power cable may be connected to the power supply, and the other end may be extended inside the support, led into the attachment portion, and connected to the terminal block in the attachment portion. With this configuration, the power cable connection work is facilitated.
Position where the support shaft for securing the fall-prevention wire is installed in the opening of the support, and the holder that holds the power cable extending inside the support is moved closer to the terminal block than the support shaft in the support opening Since the power cable and the fall prevention wire are not crossed, the wiring work can be performed efficiently. In addition, since the power cable held by the holder is bent and connected to the terminal block, it is possible to prevent the power cable from protruding upward. For example, the rainproof lid can be opened and closed to cover the clamp and terminal block. When it is provided, the height of the lighting fixture including the lid can be suppressed.

In this case, the clamp portion extends in the vertical direction, the power cable extends upward inside the support column, and a holder for holding the power cable faces the opening at the upper end of the clamp portion and is held by the holder. The curved power cable may be bent downward, and the curved power cable may be held by the sub-holder .
Further, the clamp portion extends in the horizontal direction, the power cable extends horizontally inside the support column, and the holder for holding the power cable faces the opening at the tip of the clamp portion and is held by the holder The power cable may be bent to the side and connected to the terminal block.
The attachment part may be provided with a rainproof lid so as to be openable and closable so as to cover the clamp part and the terminal block.
You may provide the drain outlet which discharges rainwater etc. in the bottom part of the said attaching part.
The mounting portion and the light source housing portion are partitioned by a partition, the light source is an LED, and a wiring extending from the LED penetrates the partition in a watertight manner and is connected to the terminal block inside the mounting portion. Also good.

  According to the present invention, the holder for holding the power cable is arranged facing the position closer to the terminal block side than the support shaft in the opening of the clamp portion, and the power cable held by the holder is bent to Since it is connected to the terminal block, there is no possibility that the power cable is bent between the support column and the holder, and the power cable can be held at a position closer to the terminal block than the support shaft. Accordingly, it is possible to provide a connection structure for a lighting fixture that is easy to connect or remove the power supply wire and has good workability.

It is a perspective view which shows the external appearance structure of the lighting fixture which concerns on this embodiment. It is a figure which shows the example of arrangement | positioning of a lighting fixture, and light distribution. It is a bottom view of a lighting fixture. It is II sectional drawing in FIG. It is a perspective view which shows the structure of the lighting fixture at the time of lid opening. It is a perspective view which expands and shows the internal structure of an attaching part. It is a figure which expands and shows the overlap part of a cover and a cover body. It is sectional drawing of the width direction center part of the overlap part of a cover and a cover body. It is a figure which shows operation | movement of a terminal block unit. It is a perspective view which shows the structure at the time of lid opening of the lighting fixture which concerns on another embodiment of this invention. It is a perspective view which expands and shows the internal structure of the attaching part of the lighting fixture. It is sectional drawing which shows the structure of the lighting fixture which concerns on another embodiment of this invention. It is a figure which shows the structure of the power supply circuit of a lighting fixture. It is a graph which shows the luminous flux maintenance factor of the LED element with respect to elapsed time. It is a flowchart which shows lighting control of an LED module.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an external configuration of a lighting fixture 1 according to the present embodiment.
The lighting fixture 1 is attached to the upper end of the support | pillar 3 provided by the roadside, as shown in FIG. An LED power supply (AC / DC power supply) 7 that supplies electric power to the lighting fixture 1 is accommodated in the lower portion of the column 3. The luminaire 1 includes a lower body 9 that is formed of aluminum die casting or the like and is fixed to the upper end of the support column 3, and a cover 11 and a lid body 13 that are provided on the upper side of the lower body 9. A support opening 15A for inserting the support column 3 is provided on the lower surface of the base end side of the lower main body 9. In this embodiment, the support post 3 is inserted into the support opening 15A on the lower surface of the lower main body 9. Yes. The rear surface of the base end side of the lower body 9 is provided with a support opening 15B for a knockout hole. In another embodiment (see FIG. 10) described later, the support opening 15A is closed with the support opening 15A closed. 15B is opened and the support | pillar 3 is inserted in this support | pillar opening 15B.
The lighting fixture 1 is installed so that the distal end side of the lower main body 9 protrudes from the road surface of the road R as shown in FIG.

The lighting fixture 1 is arrange | positioned by the predetermined attachment space | interval M on one side of the road R, as shown in FIG. In this embodiment, this lighting fixture 1 is arranged on one side of a two-lane road with a width W = 7M (meters) with a predetermined mounting height of 10M (meters) and a predetermined mounting interval M = 40M (meters). Each lighting fixture 1 illuminates the road surface of the road R without uneven illuminance.
That is, as shown in FIGS. 1 and 2A, the lighting fixture 1 includes LED modules 17A, 17B, and 17C as LED modules 17 that are light sources having different irradiation positions on the road R.
As shown in FIG. 2B, the LED module 17A irradiates a road surface range A17A at an intermediate point with an adjacent lighting fixture 1, and has a predetermined length (in a lane axis direction from an oblique front of the lighting fixture 1). For example, a road surface range A17A of a little less than 10M to a little less than 30M is irradiated. One LED module 17A is provided on each of the left and right sides of the luminaire 1 for symmetrical light distribution along the lane. Further, the LED module 17B irradiates a road surface range A17B having a width of about 10M along the lane including the first lane on the luminaire 1 side and the sidewalk side, in the vicinity of the luminaire 1 including the area immediately below the luminaire. To do. The LED module 17B is disposed on the distal end side of the lower main body 9. The LED module 17C irradiates a road surface range A17C including a second lane that is far from the front side of the lighting fixture 1 (that is, far from the width direction of the road R) and that has a width of about 10M or more along the lane. The LED module 17 </ b> C is disposed on the base end side of the lower main body 9.
These LED modules 17 </ b> A to 17 </ b> C include a plurality of LED units 19, and each LED unit 19 has an LED element 21 and a reflecting mirror 23 that reflects the emitted light of the LED element 21. On the lower surface of the lower main body 9 constituting the lower side of the luminaire 1, a light projection opening 27 into which a translucent plate 25 made of, for example, tempered glass or the like is fitted is formed, and light emitted from the LED element 21 And the light reflected by the reflecting mirror 23 passes through the light transmitting plate 25 through the light projection opening 27 and is irradiated onto the road surface, and road illumination is performed.

3 is a bottom view of the lighting fixture 1, and FIG. 4 is a cross-sectional view taken along the line II in FIG.
As shown in FIGS. 3 and 4, the luminaire 1 includes a light source housing portion 29 having a waterproof structure for housing the LED module 17 serving as a light source, and an attachment portion 33 having a clamp portion 31 for attaching the lower main body 9 to the column 3. And are integrally provided. Specifically, the lower main body 9 is divided into a distal end side chamber and a proximal end side chamber by a partition wall 35 that divides the inside, and a cover 11 is sealed in the distal end side chamber so that a water-tight light source accommodating portion 29 is provided. A mounting portion 33 is formed by covering the base end side chamber with a lid 13 that can be opened and closed.

The light source accommodating portion 29 accommodates a driver 39 as a lighting unit and a plurality of LED modules 17 as light sources connected to the driver 39 by electrical wiring. An optical aperture 27 is formed.
As shown in FIG. 3, the electric wire 41 extending from the LED module 17 extends through the partition wall 35 into the attachment portion 33 via the driver 39. Referring to FIG. 4, an unillustrated packing is provided on the edge 11 </ b> A of the cover 11 of the light source accommodating portion 29, and the contact portion between the cover 11 and the lower main body 9 is watertight by this packing, so that wind and rain and foreign matter can enter. Prevention is intended.

FIG. 5 is a perspective view showing a state in which the lid 13 is opened, and FIG. 6 is an enlarged view of a main part in FIG.
As shown in FIGS. 5 and 6, when the lid 13 is opened at the attachment portion 33, the clamp portion 31 and the terminal block 53 are exposed. The clamp portion 31 is a member integrally formed of aluminum die casting or the like, and as shown in FIG. 6, a column support portion 56 having a cylindrical shape extending in a substantially vertical direction, and a substantially horizontal direction at a lower portion of the column support portion 56. And a flange portion 60 extending to the center. The flange portion 60 is attached to the clamp portion attachment boss 45 by a plurality of clamp portion attachment bolts 46, and the clamp portion attachment boss 45 is integrally formed on the bottom surface of the lower body 9. As shown in FIG. 4, the clamp portion 31 includes a back fitting portion 58 that closes the support opening 15 </ b> B on the back of the lower main body 9, and the back fitting portion 58 is perforated in a substantially horizontal direction. A screw hole 47 that penetrates to the inner periphery of the portion 56 is provided. A column tightening bolt 49 is screwed into the screw hole 47. By tightening the column tightening bolt 49 and pressing the upper end portion of the column 3 against the clamp unit 31, the lower body 9 is fixed to the column 3, and rattling of the lower body 9 is prevented.
Further, as shown in FIGS. 5 and 6, a retaining bolt 48 is screwed into the column receiving portion 56 in a screw hole (not shown) penetrating from the outer peripheral surface to the inner peripheral surface. By tightening the retaining bolt 48 and projecting it inside the column receiving portion 56 and fitting it into a retaining bolt hole 59 provided at the upper end portion of the column 3 as shown in FIG. The lower main body 9 is prevented from being rotated and removed.

  As shown in FIG. 6, the clamp portion 31 has an opening 91, and a holder 94 that holds the power cable 51 that extends inside the column 3 is provided above the opening 91. The power cable 51 is, for example, a four-core cabtyre cable, and has a thin wire 52 formed by removing the coating of the tip portion extending above the holder 94. A terminal 54 is crimped to the tip of each thin wire 52.

  As shown in FIGS. 5 and 6, in the attachment portion 33, a terminal having screw holes at two locations along the side wall portion 9 </ b> A between the side wall portion 9 </ b> A of the lower main body 9 and the clamp portion attachment boss 45. A base unit mounting boss 62 is integrally provided, and the terminal base unit 71 is fixed to the terminal base unit mounting boss 62. The terminal block unit 71 includes a hat-type terminal block mounting bracket 73, a terminal block 53 accommodated in a recess of the terminal block mounting bracket 73, and a terminal block cover 77 that covers the terminal block 53. The terminal block mounting bracket 73 is mounted to the terminal block unit mounting boss 62 by mounting screws 72, whereby the terminal block unit 71 is fixed to the lower body 9. An insulating terminal block 53 is disposed in the recess of the terminal block mounting bracket 73, and the terminal block 53 is fixed to the terminal block mounting bracket 73 by a terminal block mounting screw 76.

The terminal block 53 is provided with four (8 in total) terminal mounting portions 79 in two rows, and the power source wired inside the column 3 to the inner terminal mounting portions 79. The thin wire 52 at the tip of the cable 51 is connected via the terminal 54, and the four electric wires 41 extending from the LED module 17 are connected to the terminal mounting portion 79 in the outer row via the terminal 42.
As shown in FIG. 6, the electric wire 41 passes through a partition packing 37 fitted in the opening 36 of the partition wall 35 in a watertight manner, and extends from the light source housing portion 29 to the mounting portion 33. The partition packing 37 is a seal member made of, for example, rubber, and a waterproof filter 38 having air permeability is fitted in a watertight manner at the center. In addition, four wire through openings 44 arranged in a horizontal row and four cuts 40 connected from the upper end of the partition packing 37 to the wire through openings 44 are formed in the upper portion of the partition packing 37, and the wires 41 are connected to the partition packing. When penetrating through the wire 37, the notch 40 is expanded and the wire 41 is moved to the wire through opening 44. The wire penetration opening 44 is formed to be slightly smaller in diameter than the wire 41, and the outer shape of the partition packing 37 is formed to be slightly larger than the opening 36 of the partition wall 35. By fitting in the opening 36, the water tightness of the light source housing portion 29 is maintained. In the attachment portion 33, the four electric wires 41 are bundled with a protective tube, but the protective tube is removed near the terminal block 53 and divided into four. Further, drain outlets 34 are provided at the four corners of the bottom portion of the attachment portion 33. The drain port 34 is for discharging rainwater that enters the mounting portion 33 to the outside. Even if rainwater enters the mounting portion 33, the rainwater does not stay in the mounting portion 33 to the outside. Discharged.

  Moreover, the cover 13 is provided in the attachment part 33 so that opening and closing is possible so that the clamp part 31 and the terminal block 53 may be covered. The lid body 13 is pivotally supported by a hinge 55 disposed at the base end portion of the lower main body 9 and is configured to be able to open by rotating upward with respect to the lower main body 9. That is, even if the hinge 55 is detached or damaged, the lid 13 is not immediately dropped or drooped. When performing attachment work or maintenance / inspection work, the work is performed by opening the lid 13 upward. A lid support device 57 that holds the lid 13 in an opened state with respect to the lower body 9 is provided in the lower body 9 so that the lid 13 does not get in the way when the lid 13 is opened. It has been.

The lid body 13 has an upwardly convex curved shape. Outer ribs 13A are formed on both side edges of the lid 13, and the outer ribs 13A exactly overlap the outer sides of the inner ribs 9B provided on the lower main body 9, thereby preventing rainwater and the like from entering the mounting portion 33. .
Further, as shown in FIG. 7, a connecting piece 61 into which a screw 59 is fitted is provided at the tip of the lid body 13, and the screw 59 provided on the connecting piece 61 is attached to the support portion 63 on the upper surface of the cover 11. The closed state of the lid 13 is securely held by tightening the screw hole 64. Even if the lighting apparatus 1 is installed at a relatively high place on the side of the road and a relatively strong force is applied to open the lid body 13 due to wind and rain or vibration, the lid body 13 is prevented from being opened.

  Next, a rainproof structure between the tip of the lid 13 and the upper surface of the cover 11 of the light source housing 29 will be described. The upper surface of the cover 11 has a curved shape that is convex upward, like the lid body 13. As a rainproof structure, the upper surface of the cover 11 is continuously curved in the width direction of the cover 11, The water stop part 65 which protrudes to the body 13 side is provided. On the other hand, the lid body 13 is provided with a bent portion 67 that is bent toward the cover 11 as a rainproof structure at the distal end portion. When the lid body 13 is closed, the bent portion 67 is provided with the cover 11 as shown in FIG. By fitting with the water stop portion 65 on the upper surface, direct infiltration of raindrops into the attachment portion 33 can be reliably prevented. The rainproof structure is not limited to the configuration in which the bent portion 67 is provided at the distal end portion of the lid body 13, and the raindrop portion is directly infiltrated by extending the distal end portion of the lid body 13 horizontally beyond the water stop portion 65. It is good also as a structure which prevents.

Rainwater or the like blocked by the water stop portion 65 on the upper surface of the cover 11 flows out to both sides of the cover 11 through the drainage grooves 69 provided along the convex shape on the upper surface of the cover 11. The drainage groove 69 extends continuously to the side surface of the cover 11 in the width direction of the cover 11, and the groove width of the terminal portion 69 </ b> A of the drainage groove 69 is narrow near the side surface of the cover 11 as shown in FIG. 7. In addition to being formed, the groove of the end portion 69 </ b> A is offset to the front end side of the light source housing portion 29. Thereby, in the vicinity of the side surface of the cover 11, rainwater is guided to the front end side along the end portion 69 </ b> A of the drainage groove 69 and is discharged to the outside from the front end portion 69 </ b> B of the end portion 69 </ b> A. Accordingly, rainwater or the like flowing down the drainage groove 69 does not enter the inside of the mounting portion 33.
According to this configuration, a rainproof structure can be configured with a simple configuration without the need for an extra sealing member such as packing, which was conventionally required.
In addition, a support portion 63 is provided in the center in the width direction of the water stop portion 65 on the upper surface of the cover 11, a screw hole 64 is provided in the support portion 63, and a screw 59 for fixing the lid body 13 is provided in the screw hole 64. Is tightened. The upper surface of the support portion 63 protrudes toward the lid body 13 as compared with the groove bottom of the drainage groove 69, and rainwater flowing through the drainage groove 69 does not enter the screw hole 64. The connecting piece 61 of the lid 13 protrudes into the drainage groove 69 from the support part 63 of the cover 11, and the drainage groove 69 around the support part on the upper surface of the cover 11 is formed wider.
According to this configuration, it is possible to easily push up the connecting piece 61 of the lid 13 by inserting a finger into the drainage groove 69 around the support portion 63.

Next, the terminal block cover 77 of the terminal block unit 71 will be described.
As shown in FIGS. 5 and 6, the terminal block unit 71 includes a terminal block cover 77 that covers the terminal block 53. The terminal block cover 77 is a plate-like cover member that covers the upper side of the terminal block 53, and is formed of, for example, a transparent resin material. The terminal block cover 77 covers the upper side of the terminal block 53 and can be displaced between a closed position that prevents erroneous contact and an open position that exposes the plurality of terminal mounting portions 79 and allows connection or wiring to be removed. is there. One end portion of the terminal block cover 77 is provided with a notch 81 extending in the short direction and opening toward the clamp portion 31 side. This notch 81 is attached to the terminal block when the terminal block cover 77 is closed. The terminal block cover mounting screw 75A, which is a stopper at one end of the metal fitting 73, is fitted. Further, a long hole 83 extending in the short direction is provided in the other end portion of the terminal block cover 77, and a terminal block cover mounting screw 75B, which is a stopper of the other end portion, is inserted into the long hole 83 to be connected to the terminal. Screwed into the base mounting bracket 73. When the terminal block cover mounting screws 75A and 75B at both ends are loosened, the terminal block cover 77 is moved in the short direction of the terminal block unit 71, which is the direction in which the notch 81 and the long hole 83 extend. Among these, it is configured to be slidable in a direction toward the side wall 9 </ b> A of the lower main body 9.
When the notch 81 is detached from the terminal block cover mounting screw 75A by sliding, the terminal block cover 77 is rotatably supported by the terminal block cover mounting screw 75B screwed into the terminal block mounting bracket 73. .

Further, as shown in FIG. 6, the lower surface of the terminal block cover 77 is configured to be substantially parallel to the upper surface of the side wall portion 9A and to be positioned higher than the upper surface of the side wall portion 9A. That is, when the terminal block cover mounting screws 75A and 75B at the both ends are loosened, the terminal block cover 77 has the notch 81 side which is one end with respect to the terminal block cover mounting screws 75B as the side wall portion 9A of the lower body 9. It arrange | positions so that rotation is possible so that it may protrude outside.
Therefore, even if the terminal block unit 71 is disposed close to the side wall portion 9A, the terminal block cover 77 interferes with the side wall portion 9A of the lower body 9 when the terminal block cover 77 is slid or rotated. There is nothing to do.

The length L of the long hole 83 is such that when the terminal block cover 77 is slid to the limit toward the side wall 9A side (outside), substantially half of the upper surface of the terminal block 53 on the clamp portion 31 side is exposed. Set to length. Thus, the terminal 54 at the tip of the power cable 51 can be attached or detached simply by sliding the terminal block cover 77.
The terminal block cover 77 is a transparent body, but may be an opaque body. In the case of an opaque body, the plurality of terminal attachment portions 79 cannot be visually observed. In this case, simply sliding the terminal block cover 77 exposes the inner row of terminal mounting portions 79, so that the connection status with the terminal mounting portions 79 can be seen and the terminal block cover 77 can be rotated. The state of connection with the outer row of terminal mounting portions 79 can be visually observed.

As shown in FIG. 9A, when the lid 13 is opened, the terminal block cover 77 is fixed at the closed position, that is, at a position covering all of the plurality of terminal attachment portions 79. One end of the terminal block cover 77 is fastened and fixed to the terminal block mounting bracket 73 by fitting a notch 81 with the terminal block cover mounting screw 75A, and the other end of the terminal block cover 77 has a long hole 83. The terminal block mounting bracket 73 is fastened and fixed by a penetrating screw 75B.
When the terminal block cover mounting screws 75A and 75B at both ends of the terminal block cover 77 are loosened, the terminal block cover 77 faces the side wall 9A of the lower body 9 in the short direction of the terminal block unit 71 as shown in FIG. 9B. It is possible to slide in the direction (outside). When the terminal block cover 77 is slid outward, the inner row of terminal mounting portions 79 on the upper surface of the terminal block 53 is exposed, and the power cable 51 can be connected and the wiring can be removed.
Further, since the notch portion 81 at one end is detached from the terminal block cover mounting screw 75A, the terminal block cover screw 75B penetrating the long hole 83 at the other end is used as shown in FIG. The cover 77 can be rotated. At this time, since the shape of the notch portion 81 at one end is curved in an arc shape toward the other end, the terminal block cover 77 can be rotated at the same time as the terminal block cover 77 is slid.

  When the terminal block cover 77 is rotated by a small angle θ toward the outside of the side wall 9 </ b> A of the lower main body 9, all the upper surfaces of the plurality of terminal mounting portions 79 in the terminal block 53 are exposed. At this time, even if the terminal block cover 77 is rotated further outward, it hits the head of the terminal block unit mounting screw 72 and becomes a stopper (rotation restricting member) so that the terminal block cover 77 has a small angle. The rotation over θ is restricted. In the state shown in FIG. 9C, since the upper surfaces of the plurality of terminal mounting portions 79 in the terminal block 53 are all exposed, the terminal 54 that is the tip of the power cable 51 and the terminal 42 that is the tip of the electric wire 41 are connected to the terminal block 53. It is possible to easily perform the work of connecting or disconnecting. The terminal block cover 77 does not rotate more than necessary and does not obstruct the work.

  In the present embodiment, as shown in FIG. 9B, first, the terminal block cover 77 is slid until the outer edge portion of the terminal block cover 77 comes close to the inside of the side wall portion 9A of the lower body 9, and the second Next, as shown in FIG. 9C, the terminal block cover 77 is rotated by a small angle θ from the position. In this configuration, when the terminal block cover 77 is slid until all the terminal blocks 53 are exposed and when the terminal block 53 is rotated until all the terminal blocks 53 are exposed, the side wall portion 9A of the lower main body 9 is compared. The terminal block 53 can be completely exposed without greatly extending the terminal block cover 77 to the outside, and the work of connecting or removing the terminal block 53 can be easily performed.

With reference to FIG. 6, in the attachment portion 33, the column receiving portion 56 of the clamp portion 31 extends in the vertical direction, and the upper end portion of the column 3 is fixed in the substantially cylindrical column receiving portion 56. A support shaft 85 extending in a substantially horizontal direction is provided in the opening 4 at the upper end of the support column 3. One end of the fall prevention wire 92 is fixed to the support shaft 85, and the other end of the fall prevention wire 92 is It is connected to a wire fixing bolt 93 provided in the mounting portion 33.
Next, a support structure for the power cable 51 will be described.
A holder that holds the power cable 51 that extends inside the column 3 at a position nearer to the terminal block 53 side than the support shaft 85 in the opening 4 at the upper end of the column 3 when viewed from above. 94 is fixed. The holder 94 includes two plate-like members 95 arranged in parallel and two bolts 97 that connect both ends of the two plate-like members 95, and the power cable 51 is interposed between the plate-like members 95. The power cable 51 can be easily and reliably held without being bent by tightening the bolt 97 and tightening the bolt 97. The plate-like member 95 may have, for example, a groove 99A having an arcuate cross section on one surface and a groove 99B having a trapezoidal cross section on the other surface. The power cables 51 having different cross-sectional shapes can be reliably held by sandwiching the power cables 51 with the grooves 99A having an arcuate cross section or the grooves 99B having a trapezoidal cross section facing each other. In the present embodiment, the wire fixing bolt 93 is disposed at a position close to the side wall portion 9A on the side where the terminal block 53 is not disposed with respect to the support shaft 85, and when the power cable 51 is connected or removed. In addition, the power cable 51 and the fall prevention wire 92 do not cross each other, and the workability can be prevented from being lowered. The holder 94 may be fixed at a position in the opening 91 of the clamp part 31 that is closer to the terminal block 53 than the support shaft 85. In this case as well, the power cable 51 is easily and reliably held without being bent.

The holder 94 holds the covered power cable 51, and the power cable 51 extending upward from the holding position is stripped to form a plurality of fine wires 52, and the plurality of fine wires 52 are formed in an appropriate curve. Curved downward in the state. This curve is a curve having a size allowed for the thin wire 52, and is considerably smaller than the size allowed for the coated power cable 51, thereby enabling compact wiring.
A substantially cylindrical sub-holder 96 is integrally provided on the horizontal side of the holder 94, and the sub-holder 96 holds a bundle of thin wires 52 that are curved downward. The size of the holder 94 and the sub-holder 96 is, for example, a power cable after removal of the coating so that the radius of curvature of the power cable 51 bent between the holder 94 and the sub-holder 96 becomes a predetermined length or more. It is configured so as to be 6 times or more the outer diameter of the thin wire 52, so that problems due to excessive bending of the electric wire, such as an increase in electrical resistance, can be prevented.

  According to the present embodiment, the mounting portion 33 having the clamp portion 31 for mounting to the support column 3 and the light source housing portion 29 having a waterproof structure for storing the light source are integrally provided. Since the terminal block 53 for connecting the power supply cable 51 extending inward is provided, the installation work to the support column 3 and the connection work of the power supply cable 51 can be performed simultaneously, simplifying the installation and maintenance work. Can be Further, the holder 94 that holds the power cable 51 is disposed so as to face the position closer to the terminal block 53 side than the support shaft 85 in the opening 4 at the upper end of the column 3, and the power cable 51 that is held by the holder 94. Is bent and connected to the terminal block 53, so that there is no possibility that the power cable 51 is bent between the support column 3 and the holder 94, and the power cable 51 is held closer to the terminal block 53 than the support shaft 85. can do. Accordingly, it is possible to provide a connection structure of the lighting fixture 1 that is easy to connect or remove the power cable 51 and has good workability.

  In the present embodiment, the power cable 51 held by the holder 94 is curved downward, and the sub holder 96 that holds the curved power cable 51 is disposed integrally with the holder 94. By holding, the handling of the power cable 51 between the holder 94 and the terminal block 53 is generally determined. Therefore, it is not necessary to route the power cable 51 with care so as not to bend it excessively, and the power cable 51 can be connected or removed more easily.

In the present embodiment, since the rain-proof structure lid 13 is provided so as to be openable and closable so as to cover the clamp portion 31 and the terminal block 53, the attachment work to the support column 3 and the power supply can be performed simply by opening the lid 13. Connection work of the cable 51 can be performed at the same time, installation and maintenance work are simplified, and by closing the lid 13, rain does not directly hit the terminal block 53, and a trouble such as a short circuit is surely avoided. be able to.
Moreover, in this embodiment, since the drain outlet 34 is provided in the bottom part of the attachment part 33, rainwater does not stay in the attachment part 33, and the terminal block 53 is not flooded, and troubles, such as a short circuit, are more reliable. Can be avoided.

  Further, in the present embodiment, the attachment portion 33 and the light source accommodating portion 29 are partitioned by the partition wall 35, the light source is the LED module 17, the wiring extending from the LED module 17 penetrates the partition wall 35 in a watertight manner, and Since it is connected to the terminal block 53 inside the mounting portion 33, the light source housing portion 29 can be made completely maintenance-free, and mounting and maintenance work can be further simplified to improve usability.

10 and 11 show another embodiment.
10 and 11, the same reference numerals are given to the portions described in the above embodiment, and the description thereof is omitted.
In the lighting apparatus 100, the clamp part 131 is disposed substantially horizontally in the attachment part 33. The clamp portion 131 includes a column receiving portion 156 extending in a substantially horizontal direction, and the tip end portion of the arm type column 103 extending horizontally is inserted through the column opening 15B on the back surface of the lower body 9, The column support 156 is fixed.
As shown in FIGS. 10 and 11, a retaining bolt 148 is screwed into the column receiving portion 156. The retaining bolt 148 is tightened so that it protrudes to the inside of the column receiving portion 156 and is fitted into a retaining bolt hole (not shown) provided at the distal end portion of the arm-shaped supporting column 103, so that the arm-shaped supporting column 103 is fitted. The lower body 9 serving as a shaft is prevented from rotating and withdrawn.
In addition, a column tightening bolt 149 is screwed on the upper side of the column receiving part 156. By tightening the column tightening bolt 149 and pressing the tip of the arm-type column 103 against the column receiving part 156 of the clamp part 131, rattling of the lower body 9 is prevented.
A support shaft 185 for fixing the fall prevention wire 92 is provided at the distal end portion of the arm-type column 103 that is fitted to the column receiving unit 156 of the clamp unit 131. In the mounting portion 33, a holder 194 is disposed so as to face a position closer to the terminal block 53 side than the support shaft 185 in the opening 104 at the tip of the arm type column 103. The holder 194 is screwed to a holder mounting boss 195 formed integrally with the bottom surface of the lower main body 9. The holder 194 holds a power cable 151 extending horizontally inside the arm-type support column 103. The power cable 151 held by the holder 194 is stripped to form four thin wires 152. Curved laterally and connected to the terminal block 53. The holder 194 may be fixed at a position in the opening 191 of the clamp part 131 that is closer to the terminal block 53 than the support shaft 185. Also in this case, the power cable 151 can be easily and reliably held without being bent.

The lighting apparatus 100 also includes a mounting portion 33 having a clamp portion 131 for mounting on the arm-type support column 103 and a light source housing portion 29 having a waterproof structure for housing a light source. Since the terminal block 53 for connecting the power cable 151 that is extended and wired inside the mold column 103 is provided, the attachment work to the arm column 103 and the connection process of the power cable 151 can be performed simultaneously. Installation and maintenance work can be simplified.
Further, the holder 194 that holds the power cable 151 is arranged so as to face the position closer to the terminal block 53 side than the support shaft 185 in the opening 104 at the tip of the arm type column 103, and the power source held by the holder 194 is arranged. Since the cable 151 is bent and connected to the terminal block 53, there is no possibility that the power cable 151 is bent between the arm type column 103 and the holder 194, and the power cable 151 is connected to the terminal block 53 from the support shaft 185. It can be held at a close position. Therefore, connection or removal of the power cable 151 is easy, and workability can be improved.
Furthermore, since the power cable 151 is held in a position near the terminal block 53 in the opening 104 at the distal end of the arm-type support column 103 in substantially the same direction as the extension direction of the arm-type support column 103, No wiring workability is improved.

FIG. 12 shows another embodiment.
In FIG. 12, the same reference numerals are given to the portions described in the above embodiment, and the description thereof is omitted.
In this embodiment, the LED module 17 and the driver / LED power source combined device 207 are accommodated in the light source accommodating portion 29 having a waterproof structure. The driver / LED power supply combined device 207 is a device in which the LED driver unit 39 (lighting unit) shown in FIG. 3 and the LED power supply 7 shown in FIG. 1 are integrated, and the driver / LED power supply combined device 207 has a waterproof structure. The present invention can also be applied to the lighting fixture 200 configured to be housed in the light source housing portion 29. In this luminaire 200, the connection work of the LED power source 7 at the lower part of the support column 3 is not required, so that the work can be simplified.

Next, a power supply circuit according to the electrical configuration of the lighting fixture will be described.
FIG. 13 shows the configuration of the power supply circuit 86 of the luminaire 1.
The power supply circuit 86 is a circuit that supplies power to the LED module 17, and includes the above-described LED power supply (AC / DC power supply in the drawing) 7 and the LED driver unit 39. The LED power source 7 is connected to the terminal block 53 through the power cable 51 as described above, and the LED driver unit 39 is connected to the terminal block 53 through the electric wire 41, and the LED power source 7 and the LED driver unit 39 are connected to the terminal block 53. Are electrically connected.
As described above, the LED power source 7 is built in at a height that can be reached by a worker standing on the ground below the support column 3 and connected to the commercial power source 300. The commercial power source 300 is connected to the LED power source 7 through a power supply line laid on the road or the like, and supplies AC power to the LED power source 7. The LED power supply 7 includes an AC-DC converter circuit that converts AC power supplied from the commercial power supply 300 into DC power, and outputs a constant DC voltage to the LED driver unit 39 through the terminal block 53.

The LED driver unit 39 controls the lighting of the LED module 17 by the electric power from the LED power source 7, and includes an LED drive circuit unit 87 and a PWM control unit 88, which are provided in the light source accommodation unit 29 in the LED module 17. It is housed together.
The PWM controller 88 includes, for example, a microcomputer, and controls the brightness of the LED module 17 by PWM (Pulse Width Modulation) control based on a time axis. The current value of the drive current corresponding to the brightness is output by a pulse output. The LED drive circuit unit 87 is instructed.
The LED drive circuit unit 87 supplies a drive current having a current value instructed by the PWM control unit 88 to the LED module 17 and lights it, and includes a control circuit for constant current control.

Further, the PWM controller 88 has a soft start function, an initial illuminance correction function, and a midnight dimming function in the lighting control of the LED module 17.
The soft start function does not turn on the LED module 17 instantaneously to the maximum brightness when the LED module 17 is turned on to illuminate the road when the surroundings become dark or at a predetermined time. This is a function of gradually increasing the brightness over a predetermined time (for example, 10 seconds) according to the adaptation of the eyes. With this soft start function, the road surface brightness does not suddenly increase as the LED module 17 is turned on, so that it is possible to prevent psychological adverse effects such as a driver being surprised.

  The initial illuminance correction function is a function that compensates for a decrease in luminous flux associated with deterioration over time of the LED module 17 as shown in FIG. 14, for example. That is, the PWM control unit 88 counts the lighting time of the LED module 17, a storage unit (not shown) that stores a cumulative value of the lighting time, and a light flux reduction characteristic of the LED module 17 according to the cumulative value. And). As the luminous flux reduction characteristic, a characteristic defining the relationship between the cumulative value of the lighting time and the drive current value for keeping the luminous flux constant is used. Specifically, for example, a driving current value of about 370 mA is initially defined, and the driving current value is increased with the cumulative value of the lighting time. For example, after the cumulative value reaches about 40,000 hours, the driving current value is increased. A relationship of about 430 mA is defined. Then, the PWM control unit 88 obtains a drive current value that compensates for the light beam decrease based on the accumulated value of the lighting time and the light beam decrease characteristic, and lights the LED module 17 with this drive current value. Thereby, the brightness of the lighting fixture 1 can be kept substantially constant over a long period of time regardless of the deterioration of the LED module 17 over time. In addition, by providing this initial illuminance correction function, it is not necessary to supply a driving current (for example, about 430 mA) that matches the end of the life from the beginning in order to ensure the brightness at the end of the life of the LED module 17. The drive current until the end of the life can be reduced, and the power consumption can be reduced.

  The midnight dimming function is a function for dimming the LED module 17 by a predetermined rate (about 50%) at midnight (for example, about 6 hours after lighting) when the traffic on the road is reduced. The brightness is gradually reduced over a predetermined time (for example, 20 seconds) corresponding to the driver's adaptation to the eyes. As a result, it is possible to save power by dimming in the nighttime when the traffic volume is low. Note that this midnight dimming function is effective by manual settings such as jumper pins by the operator or settings by a program based on whether the traffic on the road where the luminaire 1 is installed is reduced at night. It is configured to enable / disable setting.

As shown in FIG. 13, the power supply circuit 86 is configured by connecting two sets of the LED power supply 7, the LED driver unit 39, and the LED module 17 in parallel to the commercial power supply 300, and lighting the LED module 17. The system includes two systems, a first system C2 and a second system C2.
As described above, the LED module 17 includes three LED modules 17A, 17B, and 17C having different irradiation positions on the road surface, and each of the LED modules 17A, 17B, and 17C is the first. The system C1 and the second system C2 are provided with the same light amount and light distribution.
Thus, since the power supply circuit 86 is configured to include the first and second systems C1 and C2, in the unlikely event that either the first system C1 or the second system C2 is disconnected due to disconnection or circuit failure, etc. Even if it is interrupted, the lighting distribution of the road surface (illuminance distribution) is maintained by the lighting of the LED module 17 in the other system, so that a dark place is prevented from being generated on the road surface in the irradiation range of the lighting fixture 1. it can.

  The power supply circuit 86 includes not only the lighting fixture 1 but also the lighting fixture 100. In addition, the lighting apparatus 200 includes the LED driver unit 39 of the power supply circuit 86 that is integrated with the LED power source 7 to form a driver / LED power source combined device 207.

FIG. 15 is a flowchart of the lighting control by the PWM control unit 88 (start (power ON) process).
As shown in this figure, when the illuminance of the surrounding environment becomes darker than a predetermined value or reaches a predetermined time (such as evening), the PWM controller 88 drives the LED module 17 to turn on the LED module 17. Is determined in consideration of the initial illuminance correction (step S1). Next, the PWM control unit 88 instructs the LED drive circuit unit 87 of the current value of the drive current to start lighting the LED module 17 (step S2). In step S2, the PWM control unit 88 causes the LED drive circuit unit 87 to use a soft start function so that the current value of the drive current reaches the current value determined in step S1 over a predetermined time (for example, 10 seconds). Instruct.

Thereafter, when the midnight dimming function is disabled (step S3: disabled), the PWM controller 88 continues lighting in the normal lighting mode (step S4). This normal lighting mode is a lighting mode in which the LED module 17 is continuously lit while maintaining the current value of the drive current at the current value determined in step S1.
On the other hand, when the midnight dimming function is enabled (step S3: enabled), the PWM controller 88 lights in the midnight lighting mode when it becomes midnight. That is, the PWM controller 88 gradually diminishes the current value of the drive current when a predetermined time (for example, about 6 hours) has elapsed from the start of lighting, thereby dimming the LED module 17 (step S5). The lighting is continued in the above-mentioned midnight lighting mode in which lighting is continued in a state where light is reduced by a predetermined ratio (for example, about 50%) (step S6).

  The above-described embodiment is merely an aspect of the present invention, and can be arbitrarily modified and applied without departing from the spirit of the present invention.

  In each of the above-described embodiments, the lighting fixtures 1, 100, and 200 that house the LED module 17 that is a light source are shown in the light source housing portion 29 having a waterproof structure. However, the light source is not limited to this, and the HID lamp has a long life. It may be. Even when an HID lamp having a long life is applied, the light source housing portion 29 can be made completely maintenance-free, and installation and maintenance work can be simplified and usability can be improved.

  Moreover, although the lid 13 which can be freely opened and closed has shown the lighting fixture 1 which covers only the upper part of the attachment part 33 which accommodates the clamp part 31 and the terminal block 53, the lid 13 covers all the upper half parts of the lighting fixture 1. It may be configured as follows. Also in this case, the holder 94 of the power cable 51 is disposed facing the terminal block 53 side of the support shaft 85 in the opening 4 at the upper end of the column 3, and the power cable held by the holder 94 is arranged. By curving 51 and connecting to the terminal block 53, there is no possibility that the power cable 51 is bent between the support column 3 and the holder 94, and the power cable 51 is positioned closer to the terminal block 53 than the support shaft 85. Can be held in. Therefore, connection or removal of the power cable 51 can be simplified and workability can be improved. In addition, the lighting fixtures 100 and 200 which demonstrated the same effect by other embodiment also show | played.

1, 100, 200 Lighting equipment 3, 103 Post 4, 104 Opening (opening of the post)
9 Lower body 13 Lid 17 LED module 19 LED unit 21 LED element (light source, LED)
29 Light source housing part 31, 131 Clamp part 33 Mounting part 34 Drain port 35 Bulkhead 41 Electric wire (wiring)
51, 151 Power cable 53 Terminal block 85, 185 Support shaft 91, 191 Opening (Clamp opening)
92 Fall prevention wire 94, 194 Holder 96 Sub holder

Claims (6)

A power supply cable that is integrally provided with a mounting portion having a clamp portion for mounting on a support and a light source housing with a waterproof structure that stores a light source, and that extends inside the support and extends inside the mounting. comprising a terminal block for connecting the holder, at a position before Symbol brought near to the terminal block side opening caries Chi of the clamping portion, and fixed to the end of the clamping portion, the inner surface of the power cable said post Extending from the opening of the support along the line, holding the extended power cable in the holder, bending the power cable held in the holder and connecting to the terminal block Device connection structure.   The connection structure of the lighting fixture according to claim 1, wherein the power cable held by the holder is curved, and a sub-holder that holds the curved power cable is arranged integrally with the holder. The clamp portion extends in the vertical direction, the power cable extends upward inside the support column, a holder for holding the power cable faces the opening at the upper end of the clamp portion, and the power cable held by the holder The lighting fixture connection structure according to claim 2, wherein the curved power cable is held by the sub-holder .   The clamp portion extends in the horizontal direction, the power cable extends horizontally inside the support column, and the holder for holding the power cable faces the opening at the tip of the clamp portion, and is held by the holder The lighting fixture connection structure according to claim 1, wherein the lighting fixture is curved to the side and connected to the terminal block. The illumination according to any one of claims 1 to 4 , wherein a lid of a rainproof structure is provided in the attachment portion so as to be openable and closable so as to cover the clamp portion and the terminal block. Device connection structure.   The mounting portion and the light source accommodating portion are partitioned by a partition, the light source is an LED, and a wiring extending from the LED penetrates the partition in a watertight manner and is connected to the terminal block inside the mounting portion. The connection structure of the lighting fixture according to any one of claims 1 to 5,

Images