Lighting fixtures

Abstract

To attain prevention of coming-off when wires are pulled, instead of the prior measures to prevent the wires from coming off when the wires are pulled from outside a lighting fixture, the prior measures requiring a cable tie or a tension-stopping part in order to bundle the wires in a loop manner with the cable tie or attaching the wires to the special tension-stopping part.SOLUTION: As one means, an electric circuit unit having a power supply circuit to which external power is supplied by wires is arranged in an internal space of a body; a wire arrangement passage in which at least three wire abutting parts are arranged at intervals and the middle part of the wire abuts on the wire abutting part and bends into a mountain shape, is formed by the body and the electric circuit unit; and when the wires are pulled outward, the wires come into pressure contact with the wire abutting parts to restrain the movement of the wires.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a lighting fixture that illuminates an area to be illuminated by light emitted from a light-emitting section such as an LED (light-emitting diode). [Background technology]

[0002] There is a lighting fixture such as a security light or a road light, which comprises a housing having a top surface and surrounding side surfaces, an opening formed on the bottom surface, and a mounting portion at the base end at the rear for installation on a utility pole or other pole, and which is formed in a long shape from the base end to the tip end, a light source unit having a light-emitting element mounted on the underside of the front side of a board and arranged along the opening side of the housing, a power supply circuit arranged in a spatial region within the housing on the upper side of the rear side of the board, and a translucent cover attached to the housing so as to cover the opening of the housing, and the power supply circuit is supplied with AC power by an electric wire that passes through a bushing attached to the rear wall of the housing (Patent Document 1).

[0003] This lighting fixture operates in such a way that a power supply circuit converts AC power into DC power, and when the brightness around the lighting fixture detected by an illuminance sensor is at a predetermined dark level, the DC power is supplied to the light-emitting element to turn it on, and when the brightness level reaches a predetermined level, the supply of DC power to the light-emitting element is stopped, causing the light-emitting element to turn off. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2019-212646 A Summary of the Invention [Problem to be solved by the invention]

[0005] Patent Document 1 does not disclose any measures to prevent the electric wire from coming loose, particularly when the electric wire is pulled backward. Generally, the electric wires are connected to the power circuit by a detachable connector. Therefore, if the electric wires are pulled outward during the installation of the lighting fixture on a pole or utility pole, or if the electric wires are pulled outward by a force caused by strong winds or accumulated snow while the lighting fixture is installed on a pole or utility pole, and the electric wires are pulled toward the rear of the housing, the connector will come loose and the power supply to the lighting fixture will be cut off.

[0006] To prevent this from happening, conventionally, the wires are bound in a loop or the like inside the housing with a cable tie to prevent them from coming loose, or the wires are attached to special tension stoppers inside the housing to prevent them from coming loose. In this case, tasks such as bundling with cable ties, attaching electric wires to tension stop parts, and mounting the tension stop parts to the housing are required, resulting in increased labor hours and increased costs.

[0007] In view of these points, the present invention aims to prevent the electric wire from coming loose when pulled by applying a little ingenuity to the casing, without requiring cable ties or special tension stoppers. For this reason, the housing (main body) and the electric circuit unit cooperate to form an electric wire arrangement passage on the inner surface of the housing, through which the electric wire is arranged in a bent state. As one means for achieving this, a locking portion is integrally formed on the inner surface of the housing, through which the electric wire is arranged in a bent state, and when the electric wire is pulled, the electric wire is pressed against the pressure contact portion on the side of the locking portion, increasing the resistance in the pulling direction, thereby making it possible to suppress movement of the electric wire due to pulling. Also, a configuration is provided in which the electric wires arranged in the electric wire arrangement passage can be held without adding a cable tie or a special tension stopper part. [Means for solving the problem]

[0008] The lighting fixture of the first aspect of the present invention is A lighting device that illuminates an illuminated part by light emitted from a light-emitting element, A power supply circuit is provided in the internal space of the main body and receives external power via an electric wire; At least three electric wire abutting portions are arranged at intervals, and an electric wire arrangement passage in which the electric wire abuts on the electric wire abutting portions and bends in a mountain shape is formed on the inner space side of the main body, When the electric wire is pulled outward, the electric wire is pressed against the electric wire abutment portion, thereby preventing the electric wire from moving.

[0009] The second lighting fixture of the present invention is A lighting device that illuminates an illuminated part by light emitted from a light-emitting element, an electric circuit unit having a power supply circuit disposed in an internal space of the main body and receiving external power via an electric wire; At least three electric wire abutting portions are arranged at intervals, and an electric wire arrangement passage in which the electric wire abuts on the electric wire abutting portions and bends in a mountain shape is formed by the main body and the electric circuit unit together, When the electric wire is pulled outward, the electric wire is pressed against the electric wire abutment portion, thereby preventing the electric wire from moving.

[0010] The lighting fixture of the third aspect of the present invention is The device comprises a main body having an internal space with an opening on the underside and an attachment part at the rear for installation on a support such as a utility pole or a pole, the main body being long from the rear toward the tip side, a light emitting part having a light emitting element arranged on the underside of a board and arranged along the opening, an electric circuit unit having a power supply circuit arranged in the internal space and supplied with external power by an electric wire passing through a rear wall of the main body, and a light-transmitting cover attached to the main body so as to cover the opening of the main body, an electric wire arrangement passage is formed between a ceiling wall of the main body and the electric circuit unit, in which at least three electric wire abutting portions are arranged at intervals and in which the electric wires abut on the electric wire abutting portions and bend in a mountain shape; The electric wire abutting portion is formed on the main body, and the electric circuit unit abuts against or is adjacent to a lower portion of the electric wire abutting portion and covers the electric wire arrangement passage.

[0011] A fourth lighting fixture of the present invention is A lighting device that illuminates an illuminated part by light emitted from a light-emitting element, The device comprises a main body having an internal space with an opening on the underside and an attachment part at the rear to be attached to a support such as a utility pole or a pole, the main body being formed in a long shape from the rear toward the tip side, a light emitting part in which a light emitting element is arranged on the underside of a board and arranged along the opening, a power supply attachment body having a power supply circuit attached to the underside, an electric wire passing through a rear wall of the main body to supply external power to the power supply circuit, and a light-transmitting cover attached to the main body so as to cover the opening of the main body, an electric wire arrangement passage in which at least three electric wire abutment parts are arranged at intervals and in which the electric wire abuts on the electric wire abutment parts and bends in a mountain shape is formed between the ceiling wall of the main body and the power supply mounting body; The electric wire abutting portion is formed on the main body, and the power supply mounting body abuts against or is adjacent to a lower end of the electric wire abutting portion and covers the electric wire placement passage.

[0012] A fifth lighting fixture of the present invention is The device comprises a main body having an internal space with an opening on the underside and an attachment part at the rear for installation on a support such as a utility pole or a pole, the main body being long from the rear toward the tip side, a light emitting part having a light emitting element arranged on the underside of a board and arranged along the opening, an electric circuit unit having a power supply circuit arranged in the internal space and supplied with external power by an electric wire passing through a rear wall of the main body, and a light-transmitting cover attached to the main body so as to cover the opening of the main body, an electric wire arrangement passage is formed between a ceiling wall of the main body and the electric circuit unit, in which at least three electric wire abutting portions are arranged at intervals and in which the electric wires abut on the electric wire abutting portions and bend in a mountain shape; The electric wire abutment portion is formed by combining electric wire abutment portions formed on a ceiling wall of the main body and an upper surface of the electric circuit unit.

[0013] The sixth aspect of the present invention is a lighting fixture according to any one of the first to fifth aspects of the present invention, The electric wire abutting portion is a boss, a rib, a protrusion, or a combination thereof that protrudes into the internal space. Effect of the Invention

[0014] In the present invention, an electric wire arrangement passage is formed between the main body and the electric circuit unit, in which the middle of the electric wire abuts against the electric wire abutting portion and bends into a mountain shape. Therefore, a new electric wire arrangement passage can be formed by utilizing the electric circuit unit, and when an electric wire arranged in the electric wire arrangement passage is pulled, the electric wire is pressed against the electric wire abutting portion, increasing the resistance in the tensile direction, thereby preventing the electric wire from being pulled, and maintaining a stable power supply to the power supply circuit.

[0015] In the present invention, the electric wire arrangement passage formed by the main body and the electric circuit unit together is configured so that the electric wires housed therein are prevented from falling out by the electric circuit unit combined with the main body, so there is no need to specially attach a member to prevent the electric wires from falling out of the electric wire arrangement passage. In this way, the pulling of the electric wire is suppressed by the electric wire abutment part, and the electric wire can be removed from the electric wire arrangement passage by the electric circuit unit, so there is no need to use a special cable tie or a special tension stopper. In addition, since the electric wire arrangement passage is outside the mounting part, it is easy to arrange the electric wire in the electric wire abutment part. [Brief description of the drawings]

[0016] [Figure 1] 1 is an exploded perspective view of a lighting fixture known as a security light or a road light, which is one example of lighting fixtures according to the present invention. [Diagram 2] 2 is an exploded side view with a partial cross section illustrating the assembled state of the main body, the electric circuit unit, the light-emitting portion, and the light-transmitting cover of the lighting fixture of FIG. 1. [Diagram 3] FIG. 2 is a bottom view of the lighting fixture of FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along the line A-A in FIG. [Diagram 5] FIG. 4 is a cross-sectional view taken along the line B-B of FIG. [Figure 6] 2 is a side view of a main body portion of the lighting fixture in FIG. 1 in an assembled state with a light-transmitting cover removed. [Figure 7] FIG. 7 is a cross-sectional view taken along the line CC of FIG. 6. [Figure 8] 2 is a vertical sectional side view for explaining the relationship between an electric wire arrangement passage and an electric circuit unit in the lighting fixture of FIG. 1. [Figure 9] FIG. 2 is an external perspective view of a security light, which is one of the lighting fixtures shown in FIG. [Figure 10] FIG. 11 is an explanatory view showing another embodiment of the electric wire arrangement passage according to the present invention. [Figure 11] FIG. 11 is an explanatory view showing still another embodiment of the electric wire arrangement passage according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] The lighting device of the present invention is a lighting device that illuminates an illuminated part by the light emitted by a light-emitting element, and is equipped with a power supply circuit that is arranged in the internal space of the main body and receives external power via an electric wire, and an electric wire arrangement passage is formed on the internal space side of the main body, in which at least three (three) electric wire abutment parts are arranged at intervals and the middle of the electric wire abuts against the electric wire abutment parts and bends into a mountain shape, and when the electric wire is pulled outward, the electric wire is pressed against the electric wire abutment parts, and movement of the electric wire is prevented. One of these is a wire arrangement passage that is formed in cooperation with an electric circuit unit arranged in the internal space within the main body and having a power supply circuit to which external power is supplied via an electric wire, in which when the electric wire is pulled outward, the electric wire arrangement passage has at least three (three) electric wire abutment parts arranged at intervals in the front-to-rear direction, and the middle of the electric wire abuts against the electric wire abutment parts and is bent in a mountain shape.

[0018] In yet another embodiment, the lighting fixture includes a power supply circuit attached to a power supply mounting body so as to be positioned in the internal space within the main body and supplied with external power via an electric wire, and three or more wire abutment portions to which the electric wire is pressed when the electric wire is pulled outward extend from an upper wall of the main body into the internal space and are spaced apart in the front-to-rear direction to form a series of bent wire arrangement passages between the wire abutment portions, and when the power supply mounting body is attached within the lighting fixture, it abuts or is adjacent to the lower ends of the wire abutment portions and covers the lower side of the wire arrangement passage. This prevents the electric circuit unit or the power supply mounting body from falling out of the electric wire arrangement passage, and when the electric wire is pulled outward, the electric wire is pressed against the electric wire abutment portion, thereby suppressing movement of the electric wire due to the pulling. As an embodiment of the present invention, the configuration of a lighting fixture 1, which is called a security light or a road light, will be described below with reference to the drawings.

[0019] 1, 9, etc., lighting fixture 1 according to the present invention has an overall shape that is long in the front-rear direction with a predetermined length, and light-emitting unit 6 is a part that illuminates an illuminated part such as a road below with a predetermined brightness, and includes multiple LED elements 7 of light-emitting diodes for illumination, and emits light with a predetermined light distribution to illuminate the illuminated part. When installed on the side of the road, lighting fixture 1 is in an installation state that is approximately perpendicular to the road, and has light distribution characteristics that spread long mainly in the left-right direction so that the light emitted from light-emitting unit 6, i.e., the light emitted from LED elements 7, is distributed in the longitudinal direction of the road.

[0020] Specifically, the lighting fixture 1 has a lighting fixture main body 2 (hereinafter referred to as main body 2) made of opaque metal or resin, a light-emitting unit 6 attached to the main body 2 and illuminating the lower area of ​​the lighting fixture 1, an electric circuit unit 40, and a light-transmitting cover 23 attached in close contact with the main body 2 so as to cover the light-emitting unit 6 from below and cover the opening 2A described below. The main body 2 has an upper wall 2T which is a ceiling wall, and a surrounding wall 2S which descends from the upper wall 2T, and is formed of a metal thermally conductive material such as aluminum die-casting or a weather-resistant material such as an injection-molded ASA, having an internal space 4 which is surrounded by the surrounding wall 2S and has an opening 2A which opens to the bottom, and is configured in a long form in the front-to-rear direction. The main body 2 is provided with an attachment part 10 at the rear of the main body 2 for attachment to a predetermined support such as a pole or utility pole. When the main body 2 is made of metal, this attachment part 10 is either molded integrally with the main body 2 or a separate metal attachment member is attached to the main body 2. When the main body 2 is made of resin, a separate metal attachment member is attached.

[0021] The light-emitting unit 6 is attached to the main body 2 so as to face the opening 2A in a parallel state at the bottom of the internal space 4. A light-transmitting cover 23 is attached to the main body 2 so as to cover the light-emitting unit 6 from below and close the opening 2A in a removable or openable manner. The translucent cover 23 is dish- or tray-shaped with an annular peripheral wall that protrudes upward from the peripheral edge of the flat bottom plate so as to form a container shape with an opening at the top, and is attached watertightly to the peripheral edge of the opening 2A of the main body 2 via a gasket.

[0022] The light emitting section 6 is a section that emits light emitted by the lighting LED elements (light emitting diodes) 7 with a predetermined light distribution, and is configured such that a plurality of lighting LED elements 7 are arranged on the lower surface of the rectangular, flat LED mounting circuit board 5 in a state of slightly protruding downward, and each LED element 7 is covered with a light distribution unit 8 having a lens function for irradiating the light emitted by the LED elements 7 downward with a predetermined light distribution. The light distribution unit 8 has a lens portion 8R corresponding to each LED element 7. The LED mounting circuit board 5 and the light distribution unit 8 are both attached to the underside of a light-emitting unit mounting plate 9 made of metal such as aluminum with screws NJ. The LED mounting circuit board 5 is attached to the underside of this light-emitting unit mounting plate 9 so that the light-emitting unit 6 is positioned along the opening 2A of the main body 2, and the plate is fixed to the mounting boss of the main body 2 with screws 9N. As a result, when the main body 2 is made of metal, the heat generated when the LED element 7 emits light is transferred to the main body 2 via the light-emitting unit mounting plate 9 and diffused from the main body 2. When the main body 2 is made of resin, the heat generated when the LED element 7 emits light is partially diffused from the main body 2, but is mainly transferred from the metal light-emitting unit mounting plate 9 to the metal mounting unit 10 via the metal power supply mounting body 44 described below, and diffused from the mounting unit 10. For this reason, the light-emitting unit mounting plate 9 is referred to as a heat sink 9 for the light-emitting unit 6.

[0023] The light distribution unit 8 is made of transparent resin such as acrylic or polycarbonate, and the lens portion 8R has a shape such as a half-bale shape or a semi-arc shape that is long in the left-right direction so that the emitted light of the LED element 7 has a long light distribution characteristic in the left-right direction, such as an elliptical or oval shape. Therefore, when the lighting fixture 1 is in the normal state where it is attached to a specified support part P by the mounting part 10 so that it is positioned approximately perpendicular to the road extending in the left-right direction, the light distribution unit 8 distributes the emitted light of the LED element 7 in the longitudinal direction of the road, suppressing the light distribution in the front-to-rear direction of the lighting fixture 1, resulting in a light distribution characteristic that is mainly long in the left-to-right direction.

[0024] An electric circuit unit 40 is disposed in the internal space 4. The electric circuit unit 40 has a power supply circuit 41 to which commercial AC power, which is external power, is supplied from outside the lighting fixture 1 via an electric wire 30. The power supply circuit 41 includes electronic components on the lower surface of a power supply board 43 that constitute an AC / DC conversion circuit that converts the commercial AC power into DC power required for light emission of the LED elements 7. The electric circuit unit 40 has a power supply circuit 41, and as described below, it is sufficient that the electric circuit unit 40 is attached to the inside of the lighting fixture 1 in a state where it covers the electric wire arrangement passage 82 so that the electric wire 30 does not come off, and any means for attaching the electric circuit unit 40 to the inside of the lighting fixture 1 may be used. In the embodiment, the electric circuit unit 40 is configured to include a power supply mounting body 44 having the power supply circuit 41 attached to its underside. The power supply mounting body 44 may be in any shape, such as a plate shape, a box shape, or any other shape. DC power required for the LED element 7 to emit light is supplied through a lead wire 70 .

[0025] The electric circuit unit 40 may be configured such that, together with the power supply circuit 41, a light-emitting control circuit 42 for controlling the turning on and off of the LED element 7 is attached to the underside of the power supply mounting body 44. The light-emitting control circuit 42 includes an illuminance sensor circuit that outputs detected power based on illuminance detection by an illuminance sensor 50 that detects the illuminance around the lighting fixture 1, and a lighting control circuit that controls the turning on and off of the LED element 7 based on the output of the illuminance sensor circuit.

[0026] As shown in FIG. 1 etc., one form of the power supply mounting body 44 is formed by bending a flat metal plate to form a flat circuit mounting portion 44A to which the power supply circuit 41, or the light emission control circuit 42 and the power supply circuit 41, are attached on the underside, and the front, rear and left and right ends of the circuit mounting portion 44A are bent downward at approximately right angles to form a box-like shape that opens to the underside, and both the front and rear ends of the circuit mounting portion 44A are bent downward at approximately right angles to form a fixing mounting portion 44B. As another form of the power supply mounting body 44, instead of a box-like form, it may be formed by bending a flat metal plate to form a flat circuit mounting portion 44A to which the power supply circuit 41, or the light emission control circuit 42 and the power supply circuit 41, are attached on the underside, and a fixing mounting portion 44B in which both the front and rear ends of the circuit mounting portion 44A are bent downward at approximately right angles.

[0027] The electric wire 30 is a typical electrically conductive wire with an insulating coating, and is introduced from the rear exterior of the lighting fixture 1 through a waterproof bushing 33 attached to the rear wall of the surrounding walls 2S into the internal space 4 within the main body 2, and is connected to the power supply circuit 41 by a connector 30C.

[0028] If the electric wire 30 is pulled rearward and outward during the work of attaching the mounting part 10 of the lighting fixture 1 to a pole, utility pole, etc., or if a force pulling the electric wire 30 outward is applied due to strong wind, accumulated snow, or other factors while the mounting part 10 of the lighting fixture is attached to a pole, utility pole, etc., and the electric wire 30 is pulled rearward from the lighting fixture 1, the connector 30C will come loose and the power supply to the lighting fixture 1 will be cut off.

[0029] In order to prevent this, the present invention provides a holder 80 for the electric wire 30 within the lighting fixture 1. The holding part 80 has an electric wire arrangement passage 82 formed by the main body 2 and the electric circuit unit 40 in cooperation with each other, and the electric wire arrangement passage 82 is arranged on the underside of the upper wall 2T of the main body 2 to the side of the front part 10A of the mounting part 10 in a parallel state to the front part 10A, and the electric wire 30 accommodated in the electric wire arrangement passage 82 is prevented from falling out by the electric circuit unit 40 combined with the main body 2. The electric wire arrangement passage 82 forms a bent portion where the electric wire 30 is bent in a mountain shape in the middle by at least three wire abutment parts 81. The three wire abutment portions 81 are arranged in the front-to-rear direction at intervals, and a portion of the wire 30 abuts against the wire abutment portion 81 and is bent into a mountain shape. When a tensile force is applied to the wire 30 toward the rear of the lighting fixture 1, the wire 30 is pressed against the sides of the three wire abutment portions 81, thereby preventing the wire 30 from moving rearward.

[0030] 1 to 9, in one embodiment, wire abutting portions 81 formed of three or more bosses hanging down from the upper wall 2T of the main body 2 into the internal space 4 are arranged linearly or zigzag at intervals in the front-rear direction to form a wire arrangement passage 82 in which the wire 30 is bent in a mountain shape by the wire abutting portions 81. Each wire abutting portion 81 has a wire pressure-contact portion 81S with which the wire 30 is pressure-contacted when the wire 30 is pulled. When the power supply mounting body 44 is attached to the lighting fixture 1 so that the power supply circuit 41 is disposed in the internal space 4, the upper surface of the power supply mounting body 44 abuts or is close to the lower end of the wire abutment portion 81.

[0031] In the illustrated embodiment, three quadrangular prism-shaped bosses 81A, 81B, 81C that serve as the electric wire abutting portion 81 are integrally formed with the upper wall 2T of the main body 2 and protrude to approximately the same level toward the internal space 4. The bosses 81A, 81B, 81C are arranged in a straight line or a zigzag pattern at predetermined intervals in the front-rear direction, and the spaces between the bosses 81A, 81B, 81C form an electric wire arrangement passage 82 in which the electric wire 30 is bent in a mountain shape midway.

[0032] In the embodiment, the corners of the bosses 81A, 81B, 81C are rectangular columnar portions that become the electric wire pressure-displacement portion 81S, one corner of the columnar boss 81A is the first electric wire pressure-displacement portion 81S, two adjacent corners of the boss 81B are the second and third electric wire pressure-displacement portion 81S, and one corner of the boss 81C is the fourth electric wire pressure-displacement portion 81S, so that these form four electric wire pressure-displacement portions 81S. Alternatively, the boss 81B may have a single wire pressure-displacement portion 81S, the pointed wire pressure-displacement portion 81S having a rounded tip formed on the side of the boss 81B (on the lower side in FIG. 7), and the boss 81B may have three wire pressure-displacement portions 81S spaced apart in the front-to-rear direction as a whole.

[0033] That is, the middle boss 81B serves as the top of the mountain, and the front and rear bosses 81A and 81C serve as the base of the mountain, so that the electric wire 30 housed in the electric wire arrangement passage 82 is bent in a mountain shape (V-shaped bend) at the three bosses 81A, 81B, and 81C as it extends in the front-rear direction, as shown in Fig. 7. Therefore, when the electric wire 30 is pulled outward (rearward, which is the right direction in Fig. 7), the electric wire 30 is pressed against each electric wire abutment portion, and movement of the electric wire 30 is suppressed. If the wire pressure-welding portion 81S, which is a corner of a rectangular prism, had a sharp tip, the insulating coating of the electric wire 30 being pressure-welded would be damaged. To prevent this, the corner is formed with a slight R surface, i.e., an arc-shaped surface, within the range that maintains the pressure-welding effect of the electric wire 30.

[0034] The assembly structure of the lighting fixture 1 will now be described. The main body 2 has L-shaped support parts 11 that support the mounting part 10 at two locations, front and rear, facing the internal space 4 on the underside of the upper wall 2T of the main body 2. When the front part 10A of the mounting part 10 is inserted into the internal space 4 from the rear of the main body 2 and its tip abuts against the positioning part 91, the front part 10A of the mounting part 10 is supported on the underside of the upper wall 2T by the support parts 11. In this state, the mounting part 10 is fixed to the upper wall 2T of the main body 2 by the screws 92. In this state, as shown in FIG. 9 etc., the rear portion 10B of the mounting portion 10 extends rearward from the lighting fixture 1, and is ready to be mounted on a predetermined support such as a pole or utility pole.

[0035] In this state, the light collecting holes formed in the upper wall 2T of the main body 2 and the front part 10A of the mounting part 10 are aligned, and a hollow first light collecting member 51 having a lens part on its upper surface that introduces external light is attached to this light collecting hole.

[0036] With the main body 2 facing the opening 2A, the electric wire 30 is introduced into the internal space 4 within the main body 2 through the waterproof bushing 33 attached to the rear wall of the main body 2, and as shown in FIG. 7, the middle portion is accommodated in a state in which it is bent into a mountain shape by the bosses 81A, 81B, and 81C, and the tip portion is placed in a state facing forward within the internal space 4.

[0037] In the electric circuit unit 40 including the power supply circuit 41, a hollow second light collecting member 52 corresponding to the illuminance sensor 50 is attached to pass through the rear area of ​​the flat circuit mounting portion 44A. A fixing flange portion 45 formed at the upper end of the fixing mounting portion 44B formed on both the front and rear ends of the power supply mounting body 44 is fixed to the front portion 10A of the mounting portion 10 by a screw 46, and the electric circuit unit 40 is positioned in the internal space 4. In this state, the upper surface of the flat circuit mounting portion 44A of the power supply mounting body 44 forming the upper surface of the electric circuit unit 40 is in contact with or close to the lower ends of the bosses 81A, 81B, 81C, and the flat circuit mounting portion 44A of the power supply mounting body 44 forms the lower wall of the electric wire arrangement passage 82, thereby forming the electric wire arrangement passage 82. Therefore, the electric wire arrangement passage 82 is formed in the front-rear direction by the upper wall 2T of the main body 2 and the flat circuit mounting portion 44A of the power supply mounting body 44 in cooperation, and the electric wires 30 accommodated in the electric wire arrangement passage 82 are prevented from falling out of the electric wire arrangement passage 82 downward by the power supply mounting body 44. In this state, by connecting the wire side terminal attached to the tip of the wire 30 from the front of the electric circuit unit 40 to the power supply circuit 41 side terminal, the wire 30 and the power supply circuit 41 are electrically connected at the connector 30C.

[0038] With the LED mounting circuit board 5 attached to its underside by the screws NJ, the light-emitting unit mounting plate 9 is positioned below the box-shaped power supply mounting body 44 so as to cover the lower opening of the box-shaped power supply mounting body 44, and the front and rear fixing flange portions 47A and 47B formed on the lower ends of the front and rear fixing mounting portions 44B of the power supply mounting body 44 each abut against the back side (upper surface) of the light-emitting unit mounting plate 9. In this state, the light-emitting unit mounting plate 9 is fixed from below to the mounting bosses 2B of the main body 2 at two locations in the front and one location in the rear with screws 9N, and at the same time, the rear fixing flange portion 47B of the power supply mounting body 44 is fixed to the back side (upper surface) of the light-emitting unit mounting plate 9. In addition, at the middle portion of the light-emitting unit mounting plate 9, the front fixing flange portion 47A of the power supply mounting body 44 is fixed to the back side (upper surface) of the light-emitting unit mounting plate 9 with screws 9NA from below.

[0039] As a result, the light-emitting unit attachment plate 9 comes to substantially cover the opening 2A of the main body 2, and the light-emitting unit 6 comes to be disposed along the opening 2A of the main body 2. In addition, the electric circuit unit 40 is positioned on the upper surface, which is the back side, of the light-emitting unit mounting plate 9, and the fixing mounting portions 44B formed on both the front and rear ends of the power supply mounting body 44 are fixed to the back side of the light-emitting unit mounting plate 9 by screws 9N and 9NA, so that the heat generated by the electric circuit unit 40 is dissipated via the power supply mounting body 44 and the light-emitting unit mounting plate 9 through the above-mentioned route.

[0040] In this assembled state, the light-transmitting cover 23 is attached in close contact with the opening 2A of the main body 2 so as to cover the light-emitting unit 6 from below and to cover the internal space 4. With the rotating electric wire abutting portion 23A rotatably engaged with the front end portion of the main body 2, the rear end portion of the light-transmitting cover 23 is screwed to the rear fixed flange portion 47B by the screws 23N. The light-transmitting cover 23 is integrated with the main body 2 via a packing so that the space between the light-transmitting cover 23 and the opening 2A is sealed, and with the screws 23N removed, the light-transmitting cover 23 can be opened downward relative to the main body 2 around the electric wire abutting portion of the rotating electric wire abutting portion 23A as an axis.

[0041] Although the bosses 81A, 81B, and 81C shown in the figure are linearly arranged in the front-rear direction, the bosses 81A, 81B, and 81C may be arranged in a zigzag pattern at a predetermined interval in the front-rear direction. In this case, the bosses 81A, 81B, and 81C may form a series of bent electric wire arrangement passages 82 between each other, and the electric wires 30 may be accommodated in the electric wire arrangement passages 82 in a bent state while abutting against the electric wire pressure contact portions 81S at the corners of the bosses 81A, 81B, and 81C.

[0042] As described above, when the electric wire 30 is housed in the electric wire arrangement passage 82 and is pulled to the outside rear of the lighting fixture 1, the insulating coating of the electric wire 30 is strongly pressed against the electric wire pressure-contact portion 81S, which is the corner portion of the side surface of the bosses 81A, 81B, 81C, and resistance is generated against the pulling force to the outside rear, so that movement of the electric wire 30 to the outside rear is suppressed and the electric wire 30 is prevented from coming loose at the connector 30C.

[0043] The wire abutting portion 81 only needs to be configured to resist the tensile force by being pressed against the wire pressure-contact portion 81S on the side of the wire abutting portion 81 when the wire 30 is pulled. Therefore, instead of the rectangular prism-shaped bosses 81A, 81B, 81C as described above, the bosses 81A, 81B, 81C may be triangular prism or polygonal prism-shaped, with the corners serving as the wire pressure-contact portions 81S. Further, among the bosses 81A, 81B, and 81C, a rib-like protrusion may be provided in place of the boss 81B, extending from the peripheral wall 2S of the main body 2 to the position of the boss 81B, and the side corner of the extending tip of this rib-like protrusion may be made into the electric wire pressure-displacement portion 81S, with the electric wire 30 abutting against this electric wire pressure-displacement portion 81S, thereby achieving the same function as the boss 81B.

[0044] In another embodiment of the present invention, the electric wire arrangement passage 82 formed between the circuit mounting portion 44A, which is the upper wall of the power supply mounting body 44, and the upper wall 2T of the main body 2 forms a groove-like passage that opens downward and bends in the front-rear direction on the lower surface of the upper wall 2T of the main body 2, and the bent portion of this groove-like passage is formed by at least three electric wire abutting portions 81 spaced apart in the front-rear direction. The upper surface of the power supply mounting body 44 combined with the main body 2 abuts or is close to the lower ends of the electric wire abutting portions 81 so as to close the lower opening of the groove-like passage, thereby forming a regular electric wire arrangement passage 82, and the electric wires 30 are prevented from coming off the electric wire arrangement passage 82. As a result, when the electric wire 30 is pulled rearward, it abuts against the tip of the electric wire abutting portion 81, suppressing the movement of the electric wire 30 outwardly and rearwardly, and preventing the electric wire 30 from coming off at the connector 30C.

[0045] Another embodiment of the present invention is shown in Fig. 10. In Fig. 10, a pair of rib-like electric wire contacting portions 81P and 81R spaced apart from each other in the front and rear direction are formed integrally with the upper wall 2T of the main body 2 facing the circuit mounting portion 44A, which is the upper wall of the power supply mounting body 44, and protrude toward the internal space 4, and an electric wire contacting portion 81Q protruding upward toward the middle portion between the electric wire contacting portions 81P and 81R is formed by bending the electric wire contacting portion 81Q at a part of the circuit mounting portion 44A. When the electric circuit unit 40 is combined with the main body 2, the electric wire abutting portions 81P, 81Q, and 81R form an electric wire arrangement passage 82 in which the electric wire 30 is bent upward in a mountain shape. As a result, the electric wire 30 accommodated in the electric wire arrangement passage 82 is arranged to abut against the electric wire pressure-displacement portions 81S of the electric wire abutting portions 81P, 81Q, and 81R, as shown in Fig. 10. As a result, even if the electric wire 30 is pulled rearward, the electric wire 30 is restrained from moving outward and rearward by abutting against the electric wire pressure-displacement portions 81S of the electric wire abutting portions 81P, 81Q, and 81R, and the electric wire 30 is prevented from coming off at the connector 30C. The state in which the electric wire 30 abuts against the electric wire abutting portions 81P, 81Q, 81R differs depending on the hardness of the electric wire 30 and the hardness of the insulating coating.

[0046] In this way, the wire arrangement passage 82 only needs to be configured to form a wire pressure-welding portion 81S whereby the insulating coating of the wire 30 is strongly pressure-welded when the wire 30 is pulled outward from the lighting fixture 1 in a bent arrangement, and this can be achieved in various forms without being limited to the above embodiment. The number of wire abutting parts 81 may be four or five, so long as they are three or more points spaced apart in the front-rear direction, since movement of the wire 30 is suppressed when it is pulled. However, if the number of wire abutting parts 81 forming the wire pressure-displacement parts 81S is increased to four or five, the number of mountain-shaped bends in the wire 30 increases, and the suppression effect against pulling of the wire 30 increases, but there is a concern that increasing the number of wire abutting parts 81 will make the lighting fixture 1 larger, so for compactness, three wire abutting parts 81 are used, and one mountain-shaped bend is formed in the wire 30, thereby achieving the object of the present invention.

[0047] FIG. 11 shows the configuration of an electric wire abutting portion 81 in which two AC power electric wires 30 arranged in an electric wire arrangement passage 82 do not require support by an electric circuit unit 40 or the like. That is, when the main body 2 is made of synthetic resin, three wire abutment portions 81P, 81Q, 81R which are integrally molded on the surface of the upper wall 2T facing the internal space 4 are formed in a state of protruding into the internal space 4, and the wire abutment portions 81P, 81Q, 81R are arranged at predetermined intervals in the front-to-rear direction to form a wire arrangement passage 82 in which the wire 30 is arranged in a bent mountain shape. The three electric wire abutment portions 81P, 81Q, 81R have locking pieces 81Y integrally formed at the lower end tips facing each other with a predetermined electric wire insertion gap K. The electric wire insertion gap K is a dimension slightly smaller than the diameter of one of the two electric wires 30.

[0048] As a result, the two electric wires 30 are pushed and accommodated one by one into the electric wire arrangement passage 82 formed between the electric wire abutting parts 81P, 81Q, and 81R while expanding the electric wire insertion interval K. Therefore, the electric wire abutting parts 81P, 81Q, and 81R have a restoring force (elasticity) that the synthetic resin itself has. The electric wires 30 thus accommodated in the electric wire arrangement passage 82 are prevented from falling downward by the mutual engagement pieces 81Y which have returned to their normal positions, and are stably accommodated and held in the electric wire arrangement passage 82. The electric wire 30 accommodated in the electric wire arrangement passage 82 is bent in a mountain shape with the intermediate electric wire abutment portion 81Q acting as the crest of the mountain and the front and rear electric wire abutment portions 81P and 81R acting as the base of the mountain, and when the electric wire 30 is pulled outward (to the right in Figure 11), the electric wire 30 is pressed against each electric wire abutment portion, thereby preventing the electric wire 30 from moving.

[0049] In the above embodiment, the electric circuit unit 40 and the electric wire arrangement passage 82 are positioned in the rear region of the interior space 4, and as shown in FIG. 8, the electric wires 30 are introduced into the interior space 4 from the rear exterior of the lighting fixture 1, and while being housed in the electric wire arrangement passage 82, are wired so as to extend from the front of the electric circuit unit 40 toward the power supply circuit 41, and are connected to the power supply circuit 41 at the connector 30C. The electric circuit unit 40 and the electric wire arrangement passage 82 may be located in the middle region or the front region of the upper internal space 4. In this case, similarly to the above, the electric wires 30 can be introduced from the outer rear part of the lighting fixture 1 into the internal space 4, and wired from the front or rear of the electric circuit unit 40 toward the power supply circuit 41 while being housed in the electric wire arrangement passage 82, and connected to the power supply circuit 41 at the connector 30C.

[0050] The present invention is not limited to the above embodiment, and also includes a form in which an electric wire arrangement passage 82 is formed on the inside of a wall among the surrounding walls 2S that forms a side wall of the internal space 4, and the electric wire arrangement passage 82 is covered with an electric circuit unit as described above, and the electric wire abutment portion may be in any form such as a boss, rib, protrusion, etc., and includes a technical range that can be modified within the technical concept of the present invention. [Explanation of symbols]

[0051] 1. Lighting equipment 2. Lighting fixture body (main body) 2A...Aperture 2B...Mounting boss 2S: Surrounding wall 2T...Top wall 23...Translucent cover 4. Inner space 5 LED mounting circuit board 6 Light-emitting part 7 LED element 8. Light distribution unit 8A Lens section 9 Light emitting part mounting plate (heat sink) 10...Mounting part 23...Translucent cover 30...Electric wire 30C···Connector 40 Electric circuit unit 41...Power supply circuit 42 Light-emitting control circuit 43 Power supply board 44 Power supply mounting body 50...Illuminance sensor 80... Wire holding part 81...Wire contact part 81A, 81B, 81C... Boss 81P, 81Q, 81R...Wire contact part 81Y... Locking piece 81S... Wire pressure connection 82...Wire arrangement passage

Claims

1. A lighting device that illuminates an illuminated part by light emitted from a light-emitting element, The device comprises: a main body having an internal space with an opening formed on the underside thereof, an attachment part at the rear of the main body that is attached to a columnar support, and formed in a long shape from the rear toward the tip; a light emitting part having a light emitting element disposed on the underside of a board and disposed along the opening; an electric circuit unit having a power supply circuit disposed in the internal space and supplied with external power by an electric wire passing through a rear wall of the main body; and a light-transmitting cover attached to the main body so as to cover the opening of the main body; At least three electric wire abutment parts which are integrally formed with a ceiling wall of the main body and protrude into the internal space are disposed at intervals in the front-rear direction of the main body, and an electric wire arrangement passage in which the electric wires abut on the electric wire abutment parts and bend in a mountain shape is formed by the ceiling wall of the main body and the electric circuit unit together, the electric circuit unit abuts against or is adjacent to a lower portion of the electric wire abutting portion to cover the electric wire arrangement passage from below so as to prevent the electric wire from being removed downward from the electric wire arrangement passage, A lighting fixture characterized in that, when the electric wire is pulled outward, the electric wire is pressed against the electric wire abutment portion, thereby preventing movement of the electric wire.

2. A lighting device that illuminates an illuminated part by light emitted from a light-emitting element, A power supply circuit is provided in the internal space of the main body and receives external power via an electric wire; an electric wire arrangement passage in which at least three electric wire abutting portions are arranged at intervals and in which the electric wire abuts on the electric wire abutting portions and bends in a mountain shape is formed on the inner space side of the main body; The electric wire abutment portion is formed of a boss, a rib, a protrusion, or a combination thereof protruding into the internal space, The three electric wire abutment portions are made of synthetic resin having a restoring force, and locking pieces are integrally formed at the respective opposing tip portions with a predetermined electric wire insertion interval therebetween, the electric wire insertion interval is slightly shorter than a diameter of the electric wire, so that the electric wire is pushed into and accommodated in the electric wire arrangement passage while expanding the electric wire insertion interval, When the electric wire is pulled outward, the electric wire is pressed against the electric wire abutment portion, thereby preventing movement of the electric wire.

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