JP2014038781A - Led road lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED road lamp which prevents occurrence of an accident such as incorrect wiring or contact and makes an exchange work of a power-supply unit easy by simplifying wiring in a connection box.SOLUTION: A road lamp 1 comprises: a connection box 30 in which voltage from a distribution network 40A is supplied to upstream, and terminal block units (30A, 30B) are built in; a first line 15 output from downstream of the connection box 30; a power-supply unit 31 in which the first line 15 is input to upstream, and which converts the voltage supplied through the first line 15 to required current-voltage form, and outputs it from downstream; multiple second lines 17 output from downstream of the power-supply unit 31; multiple third lines 5 connected to a light emitting unit 21; and a joint connector 7 which can connect/release the multiple second lines 17 and the multiple third lines 5 at a time. The joint connector 7 is arranged outside of the connection box 30.

Description

  The present invention relates to a road lamp that illuminates a road with light emitted from a light emitting section, and more particularly to a road lamp that includes an LED element in the light emitting section.

Many road lights are installed on ordinary roads and expressways to illuminate the road at night. In many cases, a high intensity discharge (HID) lamp such as a sodium lamp, a mercury lamp, or a ceramic metal halide lamp is used for the light emitting portion of these road lights. Also, in recent years, LED (Light Emitting Diode), which can save energy, has become more practical for lighting applications due to improved performance of LED (Light Emitting Diode), and road lighting has been mainly focused on high-power light sources such as mercury lamps and high-pressure sodium lamps. In addition, this LED has been used (for example, refer to Patent Document 1 below).

  Patent Document 2 below discloses a configuration of a general road lamp in which an opening is provided in a pillar and a distribution box is installed in the opening.

JP 2007-242258 A JP 2011-38311 A

  In recent years, lighting fixtures have been improved in efficiency by using an electronic lighting device as a lighting device, and an electronic power supply device is also used in LED road lights. However, since the electronic power supply device is configured to include electronic components, a failure that does not occur in conventional lighting fixtures due to lightning surges and the like is likely to occur. Therefore, a method of dividing the wiring into a plurality of power supply circuits has been adopted. Yes. An LED road light employing this method has the following configuration.

  FIG. 6 is a diagram schematically showing a connection state inside a conventional LED road light. The LED road light 100 having a conventional configuration includes a light emitting unit (21, 22), a power supply device (31, 32), and a connection box 60. Although not shown in FIG. 6, the power supply devices (31, 32) and the connection box 60 are accommodated in an opening provided at a low position of the pillar constituting the road light, and are placed inside the pillar. Further, the voltage supplied from the power distribution network 40A is supplied to the light emitting units (21, 22) via the respective power supply lines (hereinafter referred to as “lines”), whereby the light emitting units (21, 22) are It is a mechanism that lights up.

  FIG. 6 shows a conventional LED road light 100 provided in a central separation zone of a road, which includes a light emitting unit 21 that illuminates an up line and a light emitting unit 22 that illuminates a down line.

  For example, in a road light installed on an expressway, there is a situation in which an area for installing a connection box cannot be secured on a road surface, unlike a signal pole in which a connection box can be installed on a sidewalk. For this reason, it is necessary to accommodate the junction box 60 inside the pillar. In view of the efficiency of inspection work and the like, the junction box 60 is installed at a low position of the pillar.

  The line 71 connected to the power distribution network 40 </ b> A is once connected to the primary side terminal of the connection box 60. Then, a voltage is supplied from the secondary side terminal of the connection box 60 to the power supply device 31 via the line 72 and to the power supply device 32 via the line 73. In the power supply device 31 and the power supply device 32, the light emitting unit 21 is supplied. And 22 is converted into a current voltage form suitable for power supply to the LED elements constituting the circuit 22. The converted voltage is input from the power supply device 31 to the terminal of the connection box 60 via the line 74, and is supplied to the light emitting unit 21 from another terminal of the connection box 60 via the line 76. Similarly, from the power supply device 32, the signal is input to the terminal of the connection box 60 through the line 75, and is supplied from another terminal of the connection box 60 to the light emitting unit 22 through the line 77. The line 79 is a dimming control line or a communication line for the light emitting units (21, 22), and is configured to receive a control voltage signal from the power distribution network 40B.

  The LED element lights up when a direct current is supplied. In the case of LED elements having the same electrical performance, the same brightness is realized by supplying the same voltage. However, the value of the voltage drop Vf in the LED element varies between the elements in the process. It is known that variations occur. Therefore, in order to achieve the same brightness for each LED element using the constant voltage power supply device, it is necessary to finely adjust the resistance value of the resistor. Therefore, a constant current power supply device is generally used as the power supply device (31, 32).

  In a case where the light emitting units (21, 22) are realized by LED elements, it is necessary to arrange a plurality of LED elements in each light emitting unit in order to ensure a sufficient illumination function. When lighting a LED element using a constant current power supply device, if the plurality of LED elements are connected in parallel, a problem arises in that the current is biased due to variations in the value of the voltage drop Vf between the LED elements. The device and the plurality of LED elements are preferably connected in series. However, as described above, the power supply device (31, 32) has a configuration including electronic components, and a failure due to, for example, a lightning surge is more likely to occur than a conventional ballast of a copper iron winding. For this reason, when connected in series as described above, if there is only one circuit in which the LED elements are connected in series with respect to one power supply device, light emission will occur if any failure occurs in the power supply device. All the LED elements constituting the part (21, 22) are extinguished. In view of the fact that road lights play the role of illuminating roads for ensuring safety, it is a problem to invite such a situation. Therefore, as shown in FIG. 6, the power supply circuit is doubled and the wiring is divided into a plurality of lines, thereby ensuring safety against the road lights illuminating the road reliably.

  Under the background described above, in the LED road light 100 having the conventional configuration shown in FIG. 6, two lines 74 are formed from the secondary side of the power supply device 31 toward the connection box 60, and similarly the secondary of the power supply device 32. Two lines 75 are formed from the side toward the connection box 60. In the connection box 60, two lines 74 and two lines 76 are connected to each other, and similarly, two lines 75 and two lines 77 are connected to each other. From the connection box 60, two lines 76 toward the light emitting unit 21 and two lines 77 toward the light emitting unit 22 are formed.

  In this way, by using LED lighting for the light emitting units (21, 22), they are connected to the lines 74 and 75 connected to the secondary side of the power supply device (31, 32) and the light emitting units (21, 22). There are two lines 76 and 77 respectively. For this reason, it is inevitable that the number of lines existing in the connection box 60 becomes enormous and the connection between the terminals becomes complicated.

  FIG. 7 is a diagram schematically showing the internal configuration of the junction box 60 used in the LED road light 100 having the conventional configuration. The connection box 60 includes a breaker 62 in addition to the terminal block 61.

  The terminal block 61 is a component for stably connecting a line input to the primary side of the connection box 60 and a line output from the secondary side of the connection box 60, and the cables constituting each line are connected to each other. The two lines can be connected in an electrically stable state by being inserted into a predetermined place and screwed or the like.

  Further, the breaker 62 is a component provided to reliably shut off the power supply from the power distribution network 40A / 40B when the inspection operation of the LED road light 100 having the conventional configuration is performed, for example. For example, since the breaker 62 used for a road lamp installed on an expressway cannot be installed in another place such as a sidewalk like the connection box 60 described above, the small breaker 62 is installed inside the pillar. Are integrally accommodated in a junction box 60 formed in the above.

  By the way, road lights cannot be made extremely thick due to structural restrictions and landscape problems on the road where they are installed, and the openings need to be as small as possible due to strength. . In addition, as described above, in view of the efficiency of inspection work or the like, there is a situation that the opening cannot be provided at a very high position. That is, there are certain restrictions on the location and size of the opening for incorporating the connection box 60 and the like. This inevitably means that there is a restriction on the size of the junction box 60 itself. In addition, with the adoption of LED lighting with a longer life, an inspection display device has been opened for visually confirming the reduction in illuminance and the failure state of LED road lights, which was not necessary with conventional road lights. In some cases, the restriction imposed on the size of the connection box 60 itself becomes more prominent.

  In addition, as described above, with the use of LED lighting, the number of lines increases by duplicating the power supply circuit. Moreover, as described above, the configuration in which the breaker 62 is built in the connection box 60 reduces the installation area of the terminal block 61, and there is a limit to the number of terminals that can be provided in the terminal block 61. Arise. In such a case, when it is necessary to form an electrical connection between a plurality of sets of lines with a single set of terminals by inserting a plurality of lines into one terminal of the terminal block 61 in a semi-forced manner. May cause accidents such as miswiring or contact during work. In particular, the LED emits light when a direct current flows when it receives a direct current voltage, so it is necessary to pay attention to the polarity of the wiring when connected. The effects of accidents due to miswiring are considerably greater than conventional road lights. It can be said that.

  Further, when the power supply device (31, 32) fails, it is necessary to replace the power supply body or its components. However, as described above, the space of the opening provided inside the pillar is narrow, and it is necessary to form the connection box 60, the power supply device (31, 32) and each line in the space. The power supply devices (31, 32) had to be arranged at a position located in the inner part of the opening than the connection box 60. As a result, the power supply (31, 32) could not be replaced unless the connection box 60 was removed. In order to remove the connection box 60, it is necessary to remove all the lines connected in the connection box 60. Usually, when such work is performed on an expressway or the like, it is often performed at night when there are few passing vehicles in view of safety, but in order to replace the power supply device (31, 32), it is in the dark. An operation of removing all the lines in the connection box 60 and then removing the connection box 60 is necessary, and there is a possibility that an accident such as a load on the worker, incorrect wiring, or contact may occur.

  In view of the above problems, the present invention simplifies wiring inside the connection box, thereby preventing accidents such as miswiring and contact in advance, miniaturizing the connection box, and facilitating replacement work of the power supply device. It aims at realizing the LED road light made.

In view of the above problems, the LED road light of the present invention is
An LED road light that illuminates a road with light emitted from a light emitting unit including an LED element to which a voltage is supplied via a line provided inside a hollow column,
The pillar has an opening for exposing the inside of the pillar, and covers the opening, and is provided with a removable lid.
A voltage supplied from the distribution line is supplied to the primary side, and a connection box provided inside the opening having a built-in terminal block,
A first line output from the secondary side of the junction box;
A power supply device that inputs the first line to the primary side, converts the voltage supplied through the first line into a predetermined current voltage form, and outputs it from the secondary side;
A plurality of second lines output from the secondary side of the power supply device;
A plurality of third lines connected to the light emitting unit;
A connection connector capable of connecting / disconnecting the plurality of second lines and the plurality of third lines at a time;
The connection connector is arranged outside the connection box.

  According to this configuration, the plurality of lines (second line) output from the secondary side of the power supply device and the plurality of lines (third line) connected to the light emitting unit are temporarily connected via the connection connector. / Can be released. By configuring the light emitting unit with the LED element, a plurality of third lines connected to the light emitting unit are formed for compensation, and similarly, a power supply device for outputting a power source suitable for supply to the LED element. Similarly, a plurality of second lines are output from the secondary side. At this time, it is necessary to correctly connect each second line and each third line.

  When connecting these lines in a junction box as in the past, it is necessary to insert each second line into a predetermined terminal block and each corresponding third line into a predetermined terminal block. It was difficult to properly connect many lines in the box. In particular, since the LED element is driven by a direct current, it is necessary to connect carefully with respect to the polarity of each line. Therefore, it is necessary to perform connection more carefully than in the case of the HID lamp.

  On the other hand, according to this configuration, the plurality of second lines and the plurality of third lines can be connected / released at a time by simply connecting / disconnecting the connection connectors. Therefore, the steps necessary for connecting / disconnecting these lines are simplified.

  In this configuration, the connection connector is disposed outside the connection box. For this reason, it is not necessary to connect the plurality of second lines and the plurality of third lines inside the connection box. This means that it is not necessary to draw the plurality of second lines and the plurality of third lines into the connection box. In the conventional configuration, a plurality of lines output from the secondary side of the power supply device and a plurality of lines toward the light emitting unit are connected / released inside the connection box. However, by adopting the configuration of the present invention, the space occupied by the second line, the third line, and the terminal block inside the junction box becomes unnecessary. Thereby, it becomes possible to employ a junction box that is smaller than the conventional one.

  Further, in the above configuration, the junction box can be made smaller than before, so that a larger space than that in the past is formed in the vertical vertical direction of the junction box inside the opening of the column. Using this space, for example, a display device for inspection that detects and displays the state of the light emitting unit or the power supply device can be provided in the LED road light. Moreover, it is preferable that the inspection display device is arranged at a position where the display unit is exposed through the opening in a state where the lid is removed. This allows the operator to visually confirm the display (display screen) of the display device for inspection from almost the front position without the operator looking into the opening upward or downward after removing the lid. Can do.

  The lid is provided with an opening window for visually confirming a part of the opening from the outside of the column, and faces the display of the inspection display device with the lid attached. It is also preferable that the opening window is located at the top. With such a configuration, the worker can visually check the display screen of the inspection display device without removing the lid.

  Similarly, in the above configuration, a space larger than the conventional space is formed in the vertical vertical direction of the connection box inside the opening, so that the power supply device can be taken out through this space without removing the connection box. It is also preferable to adopt a configuration that allows attachment. That is, in addition to the above configuration, a gap is provided above or below the connection box inside the opening in a state where the lid is removed, and the power supply device It is preferable that it is installed so as to be able to be taken out from the opening through the gap without being removed.

In addition to the above features, the LED road light of the present invention has
A convex mounting member having a protruding portion disposed toward the opening surface of the column is provided in the opening portion.
Another feature is that the connection box is installed on the surface of the projecting portion of the mounting member, and the inspection display device is installed on a surface located behind the projecting portion.

  As a result, the efficiency of the connection work in the connection box is increased because the connection box is positioned in front of the worker who has the opening in front. Moreover, space is formed in the vertical up-down direction of a connection box by arrange | positioning the display apparatus for an inspection on the surface of the attachment member located in the back rather than a protrusion part. In such a configuration, the power supply device is arranged at a position outside the inspection display device in the vertical direction with the connection box as the center, and the space formed in the vertical vertical direction of the connection box is interposed. Thus, the power supply device can be removed outside the opening without removing the connection box and the inspection display device.

In addition to the above features, the LED road light of the present invention has
Another feature is that the power supply device and the inspection display device are provided above and below the junction box, respectively.

In addition to the above features, the LED road light of the present invention has
Another feature is that the connection box includes an opening / closing part that controls connection / disconnection between the line supplied from the distribution line and the first line.

  When one LED road light includes one light emitting unit, one power supply device is required, and one inspection display device is required to detect the state of the light emitting unit and the power supply device. Similarly, in the case where one LED road light is configured to include two systems of a light emitting unit that illuminates an up road and a light emitting unit that illuminates a down road, in order to supply a power supply voltage to each light emitting unit, A power supply device is required, and two inspection display devices are required to detect and display the state of each light emitting unit and the power supply device. Here, in the case of realizing a configuration having two light emitting units with one LED road light, the number of wirings is doubled compared to the case of one system. As described above, in the case of the conventional configuration in which a plurality of lines output from the secondary side of the power supply device and a plurality of lines directed to the light emitting unit are connected inside the connection box, a very large number of lines are formed inside the connection box even in the case of one system. In view of the existence of the lines, if one road lamp has two light emitting units, the number of lines inside the junction box becomes extremely large, resulting in a complicated connection state. For this reason, the possibility of occurrence of accidents such as miswiring and contact may be further increased. However, according to the configuration of the present invention, each second line and each third line can be positioned outside the connection box, so that two systems from the power distribution network through one connection box having an opening / closing part. Even in a mode in which power is supplied to the light emitting unit, the inside of the connection box is not in a complicated connection state, and it is possible to prevent accidents such as miswiring and contact.

  In addition, according to the structure of this invention, even if it is a case where a junction box is given a waterproof function, the connection connector located outside a junction box cannot receive the benefit of the waterproof function which a junction box has. Therefore, it is preferable to add waterproofness to the connection box and the connection connector. Thereby, it is possible to prevent the occurrence of an accident such as leakage due to rainwater or the like flowing into the pillar or the junction box.

  According to the LED road light of the present invention, since wiring inside the junction box is simplified, it is possible to prevent accidents such as miswiring and contact. Moreover, since the junction box can be reduced in size, a wider space can be provided in the vertical vertical direction of the junction box. As a result, for example, the power supply device can be replaced without removing the connection box, or the display screen of the inspection display device can be installed at a position easy for the operator to see.

It is a schematic diagram which shows the external appearance structure of a LED road light. It is a schematic diagram which expands and shows the opening part vicinity of a LED road light, and respond | corresponds to a front view when the opening surface of an opening part is made into the front. It is a schematic diagram which expands and shows the opening part vicinity of a LED road light, and respond | corresponds to the side view when the opening surface of an opening part is turned sideways. It is the figure which showed typically the connection state inside an LED road light. In FIG. 3A, it is the schematic diagram which expanded the inside and vicinity of the connection box 30. FIG. It is another schematic diagram which expands and shows the opening part vicinity of a LED road light, and respond | corresponds to the side view when the opening surface of an opening part is turned sideways. In FIG. 4A, it corresponds to a front view when the lid portion provided with the opening window is set to the front. It is another schematic diagram which expanded the inside and the vicinity of the connection box 30 of LED road light. It is the figure which showed typically the connection state inside the conventional LED road light. It is the figure which showed typically the internal structure of the conventional junction box 60. FIG.

  The road lamp of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected about the same thing as the component demonstrated with reference to FIG. In each drawing, the dimensional ratio in the drawing does not necessarily match the actual dimensional ratio.

[External view]
FIG. 1 is a schematic diagram showing an external configuration of a road light. The road lamp 1 is configured to illuminate the roads (3A, 3B) with visible light emitted from the light emitting units (21, 22) supported by the pillars 2. In addition, in this embodiment, the light emission part (21, 22) is a structure containing an LED element.

  In FIG. 1, a road lamp 1 is installed on a median strip, and one road lamp 1 includes a set of light emitting sections (21, 22), and one light emitting section 21 emits an up road 3A and the other light emitting section. The aspect in which the part 22 illuminates the down road 3B is illustrated. However, FIG. 1 is only an example, and the present invention is not necessarily limited to a configuration in which the road lamp 1 includes two light emitting units (21, 22). For example, a road lamp installed in a roadside belt may have a configuration including one light emitting unit.

  The road lamp 1 is configured to have a hollow column 2, and an opening 11 for exposing a hollow portion (inside) of the column 2 is formed at a position below the column 2. Further, the column 2 is provided with a cover 12 that covers the opening 11 and can be removed.

  As will be described later, power is supplied to the LEDs constituting the light emitting units (21, 22) such as a junction box in which a power supply line to which an AC voltage is supplied from the power distribution network is input to the primary side. Power distribution facilities are housed. Moreover, since the opening part 11 is provided in the lower position of the pillar 2, it becomes a structure with which an inspection and replacement | exchange of components by an operator are easy.

  The road light 1 shown in FIG. 1 is assumed to be installed on, for example, a roadside belt or a median strip of an expressway, a roadside belt of a general road, or the like. Although not shown, as an example, the power supply voltage can be supplied from the bottom of the road lamp 1 via a track.

[Internal configuration and power supply system]
2A and 2B are schematic views showing the vicinity of the opening 11 of the road light 1 in an enlarged manner. FIG. 2A corresponds to a front view facing the opening surface of the opening 11, and FIG. 2B corresponds to a side view of the opening 11 lying sideways. 2A shows a state in which the opening portion 11 is exposed, and FIG. 2B shows a state in which the opening portion 11 is covered by the lid portion 12.

  As shown in FIGS. 2A and 2B, a connection box 30, a power supply device (31, 32), an inspection display device (35, 36), and the like are configured in the opening 11. In this figure, the connection box 30 and the inspection display devices (35, 36) are exposed in a state in which the lid 12 is removed. That is, the worker who removed the lid 12 can visually confirm the display of the inspection display device (35, 36) when facing the opening surface of the opening 11. On the other hand, the power supply devices (31, 32) are located outside the opening surface of the opening 11 and are hardly exposed. However, the power supply devices (31, 32) may also be installed at positions where most of the power supply devices (31, 32) are exposed with respect to the opening surface of the opening portion 11. Hereinafter, the inspection display device is simply abbreviated as “display device”.

  Further, as shown in FIG. 2B, in this embodiment, an attachment member 50 for installing the connection box 30 and the display device (35, 36) is provided in the opening 11. The mounting member 50 has a convex shape with the protrusion 50A facing the opening surface of the opening 11, and the connection box 30 is disposed on the surface of the protrusion 50A. Further, display devices (35, 36) are arranged on the surface of the portion 50B of the mounting member 50 located behind the projecting portion 50A with respect to the opening portion 11. A power supply device 32 is installed above the display device 36, and a power supply device 31 is installed below the display device 35.

  As will be described later, according to the road lamp 1 of the present invention, the connection box 30 can be downsized as compared with the conventional connection box 60 because the line connection method for supplying power is devised. This makes it possible to provide the spaces D1 and D2 in the vertical vertical direction of the connection box 30 in the opening 11. As a result, the power supply device 32 can be taken out from the opening 11 through the space D1, and the power supply device 31 can be taken out from the opening 2 through the space D2. That is, the power supply device (31, 32) can be taken out of the column 2 without taking out the connection box 30.

  Moreover, the connection box 30 can be located in the location closer to the opening surface of the opening part 11 than the center axis of the pillar 2 by arrange | positioning the connection box 30 on the surface of 50 A of protrusion parts. Thereby, the worker can make construction in the junction box 30 easy.

  Hereinafter, the connection state for electrically connecting the connection box 30, the power supply device (31, 32), the display device (35, 36), and the light emitting unit (21, 22) will be described in detail with reference to another drawing. Explained.

  FIG. 3A is a diagram schematically showing a connection state inside the road lamp 1 in accordance with FIG. 6 showing the LED road lamp 100 having a conventional configuration. Moreover, FIG. 3B is the schematic diagram which expanded the inside and vicinity of the connection box 30 in FIG. 3A.

  In the connection box 30 provided in the road lamp 1 of the present invention, the voltage from the power distribution network 40 </ b> A is supplied to the primary side of the connection box 30 via the line 71. The line 15 output from the secondary side of the connection box 30 is input to the primary side of the power supply device 31. Similarly, the line 16 output from the secondary side of the connection box 30 is the primary side of the power supply device 32. Is input. The lines 15 and 16 correspond to the “first line”.

  That is, the connection box 30 connects the terminal block 30B and the terminal block 30A to the line 71 from the power distribution network 40A and the first line (15, 16) connected to the primary side of the power supply device (31, 32). Connect through. The terminal block 30A includes a blocking unit (not shown), and the blocking of the line 71 and the line 15 and the line 71 and the line 16 can be controlled by operating the blocking unit. is there. The terminal block part 30A can be configured as a terminal block with a built-in fuse function as an example. The terminal block 30B includes an opening / closing part.

  The voltage supplied via the line 15 is converted into a predetermined current voltage form in the power supply device 31 and output from the line 17. Similarly, the voltage supplied via the line 16 is converted into a predetermined current voltage form in the power supply device 32 and output from the line 18. Here, as described above, since the light emitting unit (21, 22) includes the LED element, the lines 17 and 18 are configured by a plurality of lines from the viewpoint of multiplexing the wiring for compensation. . The line 17 and the line 18 correspond to a “second line”.

  The line 5 covering the plurality of lines connected to the light emitting unit 21 and the plurality of lines 17 output from the secondary side of the power supply device 31 are configured to be able to be connected at a time via the connection connector 7. . By detaching the connection connector 7, the connection between the plurality of lines 5 and the plurality of lines 17 can be released at a time without opening and closing the connection box 30. Similarly, the line 6 covering the plurality of lines connected to the light emitting unit 22 and the plurality of lines 18 output from the secondary side of the power supply device 32 can be connected at a time via the connection connector 8. Has been. By disconnecting the connection connector 8, the connection between the plurality of lines 6 and the plurality of lines 18 can be released at a time. Lines 5 and 6 correspond to “third line”.

  Further, other lines 41 and 42 are also output from the secondary side of the connection box 30. A voltage signal for control related to dimming and the like of the light emitting units (21, 22) is supplied from the power distribution network 40B via a line 79. The line 79 is connected to the lines 41 and 42 via the terminal block 30B, and a voltage signal is input to the display device 35 via the line 41 and to the display device 36 via the line 42, respectively. The distribution networks 40A and 40B may be configured such that different line voltages are supplied to each other, for example, in a single distribution network sharing a neutral line, and the voltage is completely supplied from another distribution line. It does not matter as a configuration.

  The terminal block 30B is configured to include an opening / closing portion. By operating the opening / closing portion, the line 71 connected to the power distribution network 40A and the lines 15 and 16 connected to the power supply devices (31, 32), In addition, the connection / disconnection between the line 79 connected to the power distribution network 40B and the line 41 and the line 42 connected to the display device (35, 36) can be controlled. In addition, the terminal block part 30B should just have a function which can be opened and closed temporarily for inspection and replacement | exchange of a power supply device (31, 32) and a display apparatus (35, 36). Therefore, it is not necessary to have a cutoff function at the time of overcurrent unlike the terminal base part 30A that constitutes a connection part for supplying power for operation of the power supply device (31, 32), and a terminal that simply has an opening / closing function. You may implement | achieve with a stand (for example, screw-up-type disconnection terminal block). Thereby, size reduction of the junction box 30 is further realizable compared with the case where it comprises with a normal disconnector.

  As shown in FIG. 3A, another line 43 output from the display device 35 is connected to another line 44 output from the power supply device 31 via the connection connector 45. The display device 35 can monitor the operating state of the power supply device 31 and / or the light emitting unit 21 via the line 43 and the line 44. The display device 35 is provided with a display unit composed of a liquid crystal screen or the like, and is configured to be able to display information relating to such an operation state.

  Similarly, another line 46 output from the display device 36 is connected to another line 47 output from the power supply device 32 via the connection connector 48. The display device 36 can monitor the operating state of the power supply device 32 and / or the light emitting unit 22 through the line 46 and the line 47. The display device 36 is provided with a display unit composed of a liquid crystal screen or the like, and is configured to be able to display information relating to such an operation state.

  As shown to FIG. 3A, the road light 1 of this invention is a line (17,18) output from the secondary side of a power supply device (31,32), and the line connected to a light emission part (21,22). (5, 6) is connected to the outside of the connection box 30 by the connection connectors (7, 8), so that electrical connection between both lines is ensured. That is, with this configuration, it is not necessary to accommodate any of the lines (17, 18), the lines (5, 6), and the connection connectors (7, 8) contributing to this connection inside the connection box 30. This means that it is not necessary to draw these lines (17, 18) and lines (5, 6) into the junction box 30.

  As described above with reference to FIG. 6, in the LED road light 100 having the conventional configuration, the lines (74, 75) output from the secondary side of the power supply device (31, 32) and the light emitting units (21, 22). The electrical connection with the lines (76, 77) connected to is formed in the connection box 60. For this reason, it was necessary to draw all these lines into the connection box 60. However, with the configuration of the road lamp 1, the number of lines occupying the inside of the connection box 30 can be reduced, which makes it possible to employ a connection box 30 that is smaller than the conventional one.

  Since the connection box 30 can be miniaturized in this way, the space (D1, D2) can be secured in the vertical vertical direction of the connection box 30 as described above with reference to FIG. 2B. It can be installed at a position substantially opposite to the opening 11. As a result, the operator can visually confirm the display screen of the display device (35, 36) from the front position without looking into the opening 11 upward or downward when the lid 12 is removed. can do.

  As described in the section of the problem, the number of wirings is simply doubled as compared with the structure in which the HID lamp is adopted by configuring the light emitting unit (21, 22) with the LED. Therefore, when connecting a plurality of lines 74 and a plurality of lines 76 and a plurality of lines 75 and a plurality of lines 77 in the connection box 60 as in the prior art, each line (74, 75) is connected to the connection box. It is necessary to insert the corresponding lines (76, 77) into the predetermined terminal block as well as to the predetermined terminal block in the 60, and it is difficult to properly connect these many lines in the narrow connection box 60. Met. In particular, it is necessary to pay attention to the polarity of each line due to the configuration of the LED, and due to the nature of the work of installing the road lights, there are cases where it is necessary to perform night work with low traffic volume. The work of correctly connecting the lines is a very heavy burden on the workers.

  However, according to the configuration of the road light 1, the plurality of lines (17, 18) and the plurality of lines (5, 6) can be connected / released at a time by simply connecting / disconnecting the connection connectors (7, 8). Therefore, the steps necessary for connection / release can be simplified, and accidents such as miswiring and contact can be prevented.

[Another embodiment]
<1> As shown in FIGS. 4A and 4B, the lid 12 may have an opening window (13 </ b> A, 13 </ b> B) for visually confirming a part of the inside of the opening 11. FIG. 4A is similar to FIG. 2B and corresponds to a side view when the opening surface of the opening portion 11 is set sideways. FIG. 4B corresponds to a front view when the column 2 with the lid 12 attached is enlarged in the vicinity of the lid 12 and the lid 12 is faced.

  As described above, according to the road light 1, since the connection box 30 can be downsized, the display devices (35, 36) can be arranged at positions above and below the connection box 30. Therefore, by providing the opening portion (13A, 13B) on the lid portion 12 at a position facing the display portion of the display device (35, 36), the operator can visually display the lid portion 12 without removing the lid portion 12. The display screen of the device (35, 36) can be confirmed.

  <2> A configuration in which a ground terminal can be attached to the attachment member 50 illustrated in FIG. 2B may be employed. FIG. 5 is an enlarged schematic view of the inside and the vicinity of the connection box 30 according to FIG. By attaching the ground terminal 51 to the attachment member 50, the ground wire 52 can be pulled out from the ground terminal 51. As a result, for example, when a high voltage such as a lightning surge is applied to the junction box 30, a current escape path is ensured through the ground wire 52, and a secondary disaster such as a fire in addition to a failure / power failure of the road lamp 1 is secured. Safety can be ensured, such as being able to prevent it.

  <3> In the above-described embodiment, the road light 1 includes two light emitting units (21, 22), and accordingly, one set of power supply devices (31, 32) and one set for inspection. It demonstrated as a structure provided with a display apparatus (35, 36). However, the road light 1 may be configured to include only the light emitting unit 21. In this case, the road light 1 may be configured to include only one power supply device 31 and one inspection display device 35. At this time, the power supply device 31 and the inspection display device 35 may be disposed above or below the connection box 30.

  <4> In the above-described embodiment, the display device (35, 36) controls the power supply device (31, 32) based on the control voltage signal supplied via the line 79, whereby the light emitting unit The description has been made assuming a configuration in which (21, 22) light control is performed. However, it has only a function of monitoring the states of the display devices (35, 36), the power supply devices (31, 32) and the light emitting units (21, 22) and displaying information to that effect, and the power supply devices (31, 32). ) May not be provided with a function of outputting a control signal for dimming. In this case, a dimming control unit may be provided separately from the display devices (35, 36).

  <5> It is preferable to add a waterproof function to the connection box 30 from the viewpoint of preventing the cable from being corroded or deteriorated, and electric leakage. Specifically, a waterproof structure may be realized by using a waterproof material for the connection box 30 and / or using packing or the like for the opening / closing part or the external wiring extraction part in the connection box 30.

  As described above, in the road lamp 1 of the present invention, the lines (17, 18) output from the secondary side of the power supply device (31, 32) and the lines connected to the light emitting units (21, 22). Connection connectors (7, 8) for connecting (5, 6) are arranged outside the connection box 30. In this case, even if waterproofing is added to the connection box 30, the connection connectors (7, 8) that connect the lines on the outside cannot benefit from the waterproof function of the connection box 30. Therefore, for the same purpose, it is preferable to add a waterproof function to the connection connectors (7, 8). Further, the connection connectors (45, 48) may be similarly waterproofed.

1: Road light
2: Pillar 3A, 3B: Road 5, 6: Line (third line)
7, 8: Connection connector 11: Opening portion 12: Cover portion 13A, 13B: Opening window 15, 16: Line (first line)
17, 18: Line (second line)
21, 22: Light emitting unit 30: Connection box 30A, 30B: Terminal block unit 31, 32: Power supply device 35, 36: Display device for inspection 40: Power distribution network 41, 42, 43, 44, 46, 47: Line 45, 48: Connection connector 50: Mounting member 50A: Projection part 50B of mounting member: Part located in the back of the mounting member 51: Ground terminal 52: Ground wire 60: Conventional connection box 61: Terminal block 62: Breakers 71, 72 , 73, 74, 75, 76, 77, 79: Line 100: Conventionally configured LED road lights D1, D2: Space

Claims (8)

An LED road light that illuminates a road with light emitted from a light emitting unit including an LED element to which a voltage is supplied via a line provided inside a hollow column,
The pillar has an opening for exposing the inside of the pillar, and covers the opening, and is provided with a removable lid.
A voltage supplied from the distribution line is supplied to the primary side, and a connection box provided inside the opening having a built-in terminal block,
A first line output from the secondary side of the junction box;
A power supply device that inputs the first line to the primary side, converts the voltage supplied through the first line into a predetermined current voltage form, and outputs it from the secondary side;
A plurality of second lines output from the secondary side of the power supply device;
A plurality of third lines connected to the light emitting unit;
A connection connector capable of connecting / disconnecting the plurality of second lines and the plurality of third lines at a time;
The said connection connector is arrange | positioned on the outer side of the said connection box. LED road light characterized by the above-mentioned. An inspection display device that detects and displays the state of the light emitting unit or the power supply device,
2. The LED road light according to claim 1, wherein the inspection display device is disposed at a position where the display unit is exposed through the opening in a state in which the lid is removed. . A convex mounting member having a protruding portion disposed toward the opening surface of the column is provided in the opening portion.
The said connection box is installed on the surface of the said protrusion part of the said attachment member, and the said display apparatus for inspection is installed on the surface located in the back | inner side of the said protrusion part. LED road lights. The lid is provided with an opening window for visually confirming a part of the opening from the outside of the pillar,
4. The LED road light according to claim 2, wherein the opening window is positioned so as to face the display unit of the inspection display device in a state where the lid is attached.   The LED road light according to any one of claims 2 to 4, further comprising the power supply device and the inspection display device above and below the junction box, respectively. In the state where the lid is removed, a gap is provided above or below the junction box inside the opening,
6. The power supply device according to claim 1, wherein the power supply device is installed so as to be able to be taken out from the opening through the gap without removing the junction box. LED street light as described.   The LED road according to any one of claims 1 to 6, wherein the connection box includes an opening / closing part that controls connection / disconnection between the line supplied from the distribution line and the first line. light.   The LED road light according to claim 1, wherein the connection connector and the connection box are waterproof.

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