JP2014089987A - Led tunnel lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED tunnel lighting fixture which is compact and has excellent corrosion resistance and heat radiation properties.SOLUTION: The structure of the LED tunnel lighting fixture comprise: a luminaire body 11 with an opening on its backside surface; a heat radiation member 23 covering the opening and extending in a gap D between the luminaire body 11 and a wall surface 6 or a ceiling surface 9; and an LED light source on the heat radiation member 23. The heat radiation member 23 includes: a base part 23a for covering the opening; and an extending part 23b extending from the opening to the back side of the luminaire body 11. The base part 23a is larger than the opening and disposed in the luminaire body 11 to be fixed to the backside surface of the luminaire body 11. A hook 14, disposed on one side of the luminaire body 11, engages with an edge of a lid body 13 to prevent the lid body 13 from opening.

Description

  The present invention relates to an LED tunnel luminaire using an LED as a light source.

  Tunnels have multiple lighting fixtures. Conventionally, tunnel lighting fixtures that illuminate the road surface through a transparent plate that covers the front of the fixture body with a lamp built in the fixture body on the wall of the tunnel are known. (For example, refer to Patent Document 1).

JP-A-2005-203302

By the way, in recent years, in order to extend the life of the light source, reduce maintenance costs, and the like, LED light sources instead of lamps have been put into practical use.
However, since the lifetime of the LED becomes shorter as the temperature becomes higher, when the LED is used as the light source, it is important to take measures against heat radiation of the LED. Therefore, it is conceivable to form the instrument body with, for example, aluminum with good thermal conductivity so that sufficient heat dissipation can be obtained, but aluminum leaks in the tunnel (water containing hot spring components, etc.) and outside the tunnel. Easily corroded due to adhesion of snow melting agent sprayed on the roadway. In order to improve heat dissipation, it is conceivable to provide a relatively large heat radiating fin in the instrument body, but the instrument body cannot be made larger than the construction limit of the tunnel.
This invention is made | formed in view of the situation mentioned above, and aims at providing the LED tunnel lighting fixture which was small and excellent in corrosion resistance and heat dissipation.

  In order to achieve the above object, the present invention includes an instrument body having a built-in LED light source, covering the front surface and transmitting light from the LED light source, and provided on the back side of the instrument body. In the LED tunnel lighting fixture that is installed with a fixed leg fixed to the wall surface or ceiling surface of the tunnel and provided with a gap between the back surface of the device body and the wall surface or ceiling surface, in the opening provided on the back surface of the device body, A heat dissipating member that closes the opening and extends to a gap between the appliance main body and the wall surface or ceiling surface is provided, the LED light source is provided on the heat dissipating member, and the heat dissipating member includes a base that closes the opening; An extension part extending to the back side of the instrument body, and the base part is formed larger than the opening, arranged in the instrument body and fixed to the back side of the instrument body, on one side of the instrument body Hang on the edge of the lid Wherein the hook to prohibit the opening of the lid is attached.

Moreover, the said structure WHEREIN: The said instrument main body may be provided with packing in the opening edge which contacts the said cover body.
Moreover, the said structure WHEREIN: A flat bar may be provided in the back surface of the said instrument main body, and the attachment hole for attaching to the said fixed leg may be provided in the both ends of this flat bar.
Moreover, the said structure WHEREIN: You may form the groove | channel which arrange | positions packing in the base part of the said heat radiating member over the perimeter of the said opening.

  According to the present invention, the opening provided on the back surface of the instrument main body is provided with a heat dissipation member that closes the opening and extends into the gap between the instrument main body and the wall surface or ceiling surface, and the LED light source is directly attached to the heat dissipation member or heat conduction. Therefore, for example, by making only the heat dissipating member made of aluminum, it is possible to realize a small-sized LED tunnel lighting fixture with excellent heat dissipation and corrosion resistance.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the tunnel in which the LED tunnel lighting fixture concerning embodiment of this invention was installed, (A) is sectional drawing which shows the structure of a tunnel typically, (B) is LED shown to (A). It is a figure which expands and shows the attachment state of a tunnel lighting fixture. It is a top view which shows the arrangement | sequence of the LED tunnel lighting fixture in a tunnel. It is a front view which shows the structure of a LED tunnel lighting fixture. It is a figure which shows the IV-IV cross section of FIG. It is a figure which shows the VV cross section of FIG. It is a perspective view which shows a LED tunnel lighting fixture from the back side. It is a figure which shows the support structure of a unit mounting plate, (A) is sectional drawing which shows a LED tunnel lighting fixture, (B) is a X arrow directional view of (A). It is a front view which shows the structure of the LED tunnel lighting fixture which concerns on the modification of this invention. It is a figure which shows the IX-IX cross section of FIG.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a view showing a tunnel in which the LED tunnel lighting apparatus according to the present embodiment is installed, FIG. 1A is a cross-sectional view schematically showing the configuration of the tunnel, and FIG. It is a figure which expands and shows the attachment state of the LED tunnel lighting fixture shown to 1 (A). FIG. 2 is a top view showing an arrangement of LED tunnel lighting fixtures in the tunnel.
As shown in FIG. 1, a tunnel 2 in which an LED tunnel lighting device 1 is installed includes a roadway 3 having a width of, for example, about 7 m on the bottom surface (road surface), and is opposed to the center line 4 (see FIG. 2) by facing the center 2. It is divided into lanes 5 of the lane. The wall surface 6 and the ceiling surface 9 of the tunnel 2 are covered with concrete.

As shown in FIGS. 1 and 2, the LED tunnel lighting device 1 is installed on each of the left and right wall surfaces 6 </ b> A and 6 </ b> B with respect to the center line C of the tunnel 2, at a mounting height H from the road surface. The LED tunnel lighting fixtures 1 are arranged in a staggered manner along the longitudinal direction (traffic direction) of the roadway 3 with a mounting interval (span) S, or a so-called staggered arrangement, or a so-called facing arrangement in which they are installed facing each other. (The example shown is a staggered arrangement). Each LED tunnel lighting device 1 is supported by a plurality of (for example, two) fixed legs 8 fixed to the wall surface 6 with a gap D between the wall surface 6 and the wall surface 6 side from the building limit 7. Yes. For example, when the design road surface brightness is 2.3 cd / m ² , the mounting height H is set to about 5 m, and the mounting interval S is set to about 11.5 m.

FIG. 3 is a diagram illustrating a configuration of the LED tunnel lighting device 1. 4 is a view showing a section taken along line IV-IV in FIG. 3, and FIG. 5 is a view showing a section taken along line VV in FIG. FIG. 6 is a perspective view showing the LED tunnel lighting device 1 from the back side.
As shown in FIGS. 3 to 6, the LED tunnel lighting device 1 includes a housing 10. The housing 10 includes a device main body 11 having an open front surface, and a flat lid 13 attached to the front surface of the device main body 11 by a hinge 12 so as to be openable and closable. The instrument body 11 is formed of a material having excellent corrosion resistance such as stainless steel, and is formed by press molding or the like. This prevents the instrument body 11 from corroding due to leakage of water in the tunnel 2 (FIG. 1) (water containing hot spring components, etc.) or adhesion of a snow melting agent sprayed on the roadway outside the tunnel 2.
The lid 13 is formed of a transparent plate such as a glass material. Thereby, compared with the structure which uses the frame material by which the glass window was inserted in the front surface of the instrument main body 11 as a cover body, since the location which shields light does not arise in the whole front surface, the whole front opening of the instrument main body 11 serves as an irradiation opening. Functional and lighting efficiency is enhanced.

  On one side of the instrument body 11, two hooks 14 that are hooked to the edge of the lid 13 and prohibit the opening of the lid 13 are attached. The instrument main body 11 is provided with a waterproof rubber packing 15 at a location (opening edge) in contact with the lid body 13 to prevent intrusion of water or the like into the interior. In addition, two flat bars 16 are attached to the back surface of the instrument body 11, and attachment holes 16a for attaching to the fixed legs 8 (FIG. 1) are provided at both ends of these flat bars 16. Yes. When fixing the casing 10 to the wall surface 6 (FIG. 1) of the tunnel 2, the lid 13 faces the roadway 3 (FIG. 1) and the wall is so that the casing 10 is substantially parallel to the traffic direction. As a result, each of the mounting holes 16a is fixed to the fixing leg 8 with a bolt or the like. These hinges 12, hooks 14, and mounting holes 16a are also formed of a material having excellent corrosion resistance such as stainless steel. The instrument body 11 is attached with the front opening (lid 13) facing the opposite shoulder or the like.

  Inside the housing 10, a plurality (eight in this embodiment) of LED modules 21 in which a predetermined number (15 in this embodiment) of LEDs 20 are arranged in a row, and these LEDs are arranged. A plurality (two in this embodiment) of power supply devices 22A and 22B for supplying power to the module 21 and a heat sink (heat radiating member) 23 are arranged. Each LED module 21 is provided with a reflector 24, and these LED module 21 and reflector 24 constitute LED light source devices (LED light sources) 25A to 25H.

Hereinafter, the LED light source devices 25A to 25H will be described in detail with reference to FIGS.
25 A of LED light source devices are arrange | positioned along the direction (transverse direction) orthogonal to a traffic direction in the center part of the housing | casing 10. FIG. The pair of LED light source devices 25B and 25C are arranged on one side in parallel with the LED light source device 25A as viewed from the instrument center O, and the pair of LED light source devices 25B and 25C are arranged on the other side in parallel with the LED light source device 25A. Yes. Further, the two LED light source devices 25F and 25G are arranged in a row along the traffic direction on the lower side (road surface side), and the LED light source device 25H is along the traffic direction on the upper side (ceiling surface 9 (FIG. 1) side). Are arranged.

  The LED light source devices 25 </ b> A to 25 </ b> H are arranged close to the upper side of the instrument body 11 and are fixed to a unit mounting plate (unit mounting portion) 26 that is detachably provided to the heat sink 23. The central LED light source device 25 </ b> A is provided so that the light is perpendicularly incident on the plane of the lid 13 and is directly attached to the unit attachment plate 26. The other LED light source devices 25 </ b> B to 25 </ b> H are provided so that these lights are incident obliquely with respect to the plane of the lid 13, and are attached to the unit attachment plate 26 via the LED attachment plate 27. The LED mounting plate 27 is formed in a substantially square shape so that the LED light source devices 25 </ b> B to 25 </ b> H can be arranged at an angle with respect to the lid body 13.

The two pairs of LED light source devices 25B and 25C and the LED light source devices 25D and 25E are not arranged in the same direction, but are provided to face each other in the traffic direction. More specifically, the pair of LED light source devices 25B and 25C are arranged symmetrically about the straight line L1 on one side. The pair of LED light source devices 25D and 25E are arranged symmetrically about the straight line L2 on the other side. The mounting angle θ1 of these LED light source devices 25B to 25E is set equal, and is set to about 60 degrees in the present embodiment.
The two LED light source devices 25F and 25G and the LED light source device 25H are provided so as to face each other in the transverse direction. In the present embodiment, the mounting angle θ2 of the LED light source devices 25F and 25G is set smaller than the mounting angle θ1 of the LED light source devices 25B to 25E, and the mounting angle θ3 of the LED light source device 25H is set to that of the LED light source devices 25F and 25G. It is set smaller than the mounting angle θ2.

The reflection plate 24 is configured by molding a metal plate (for example, an aluminum plate) having a predetermined reflectance with respect to the light of the LED 20 by press molding or the like so as to have a cup portion 30 that covers the LED module 21. . The cup part 30 reflects the light of the LED 20 on the inner side surface thereof, and includes a pair of flat side surfaces 24 a formed along the arrangement direction of the LEDs 20.
The reflecting plate 24 of the LED light source devices 25B to 25H other than the central LED light source device 25A is formed with an extending surface 24b extending from the front end of one side surface 24a at a different angle in the direction of narrowing the cup portion 30. Yes. The pair of LED light source devices 25B and 25C are arranged so that their extending surfaces 24b are located on the straight line L1 side, and the pair of LED light source devices 25D and 25E are arranged so that their extending surfaces 24b are located on the straight line L2 side. And LED light source device 25F-25H is arrange | positioned so that those extended surfaces 24b may be located below (road surface side).

The LED light source devices 25A to 25H are arranged at intervals such that these lights are not blocked by the reflecting plate 24 of the adjacent LED light source devices 25A to 25H. In particular, the two pairs of LED light source devices 25B and 25C and the LED light source devices 25D and 25E are arranged adjacent to each other so that the LED light source device 25B and the LED are prevented from being shaded by the adjacent reflector 24. A relatively wide space is provided between the light source device 25C and between the LED light source device 25D and the LED light source device 25E.
The pair of LED light source devices 25B and 25C are disposed at positions where light reflected from the inner surface of the lid body 13 is reflected toward the road surface among the light of the opposing LED light source devices 25C and 25B. In addition, the pair of LED light source devices 25D and 25E are disposed at positions that reflect the light reflected by the inner surface of the lid body 13 toward the road surface among the light of the opposing LED light source devices 25E and 25D.

As described above, in the present embodiment, since the LED light source devices 25A to 25H are used as the light source, the life of the light source can be extended and the light source can be reduced in size and weight as compared with the case where the lamp is used as the light source. . In addition, since the light source is composed of a plurality of (eight) LED light source devices 25A to 25H, the degree of freedom of light distribution is improved compared to the case where the light source is composed of one LED light source device, and the desired light distribution is achieved. An optical pattern can be easily realized.
The two LED light source devices 25F and 25G and the LED light source device 25H are provided so that their lights are incident obliquely with respect to the plane of the lid body 13, and are disposed opposite to each other in the transverse direction. Lights from the devices 25F to 25H intersect and can irradiate light over a wide range in the transverse direction.

The LED light source device 25 </ b> A irradiates the front surface of the instrument main body 11 because the light is provided so as to enter the plane of the lid 13 perpendicularly. Since the two pairs of LED light source devices 25B and 25C and the LED light source devices 25D and 25E are provided so that their light is incident obliquely with respect to the plane of the lid body 13, and are disposed opposite to each other in the traffic direction, Light K from the LED light source devices 25B to 25E intersects to illuminate the far direction of the traffic. Since these LED light source devices 25 </ b> A to 25 </ b> E can irradiate light over a wide range in the traffic direction, the arrangement interval (span) of the LED tunnel lighting device 1 can be further expanded.
Here, as the incident angle of the light incident on the plane of the lid body 13 increases, that is, as the mounting angles θ1 to θ3 of the LED light source devices 25B to 25H increase, the amount of light reflected on the inner surface of the lid body 13 increases. Become more. In this embodiment, since the mounting angle θ1 of the LED light source devices 25B to 25E is set to about 60 degrees, the angle of the light emitted from the LED tunnel lighting device 1 is set to about 60 degrees on both sides in the traffic direction. While increasing the range, it is possible to suppress the incident angle to the lid body 13 from becoming an acute angle, being reflected on the inner surface of the lid body 13 and becoming invalid as scattered light in the instrument body 11.

  The adjacent LED light source devices 25B and 25C and the LED light source devices 25D and 25E are arranged to face each other, for example, so that the adjacent LED light source devices 25B and 25C are arranged toward the far side in the traffic direction on the other side and are adjacent to each other. Compared with the case where the LED light source devices 25D and 25E are arranged farther in the traffic direction on one side, shadows due to the adjacent reflectors 24 are less likely to occur. Therefore, since the LED light source devices 25B to 25E can be arranged closer to each other, the LED tunnel lighting device 1 can be downsized.

  The two pairs of LED light source devices 25B and 25C and the LED light source devices 25D and 25E are arranged opposite to each other symmetrically about the straight lines L1 and L2, and the inner surface ( Since the back surface reflected light reflected by the back surface is reflected toward the road surface, the light reflected by the inner surface of the lid 13 is also radiated to the outside, so that the illumination efficiency can be improved. A pair of LED light source devices 25B and 25C arranged on one side will be described as an example (FIG. 4). A part of the light K emitted from the LED light source device 25C is transmitted through the lid body 13 to become transmitted light K1. And the rest is reflected by the inner surface of the lid body 13 to become back-surface reflected light K2. The back surface reflected light K2 is reflected by the reflecting plate 24 of the opposing LED light source device 25B, and becomes incident light K3 incident on the lid 13 again. A part of the incident light K3 is transmitted through the lid 13 to be transmitted to the outside as transmitted light K4. Thereby, compared with the case where the reflecting plate which reflects back surface reflected light toward a road surface is not provided, the light quantity of the LED tunnel lighting fixture 1 can be increased about 30%. The remainder of the incident light K3 is reflected by the inner surface of the lid body 13 to become back surface reflected light K5, and this back surface reflected light K5 is reflected toward the lid body 13 by the reflecting plate 24 of the LED light source device 25A. Radiated to the outside.

The reflectors 24 of the two pairs of LED light source devices 25B and 25C and the LED light source devices 25D and 25E include a side surface 24a that can reflect light toward the far side in the traffic direction and an extension that can reflect light toward the near side in the traffic direction. Since the exit surface 24b is provided, the amount of light in the traffic direction can be made substantially uniform. Moreover, the reflecting plate 24 of the LED light source devices 25F to 25H includes a side surface 24a capable of reflecting light toward the far side in the transverse direction and an extending surface 24b capable of reflecting light toward the ceiling surface 9 (FIG. 1). Since it is provided, the amount of light in the transverse direction including the ceiling surface 9 can be made substantially uniform. As described above, the reflector 24 according to the present embodiment has a function of radiating back-surface reflected light to the outside and a function of forming a light distribution pattern.
In the present embodiment, the LED light source devices 25B to 25H are shared, and the light distribution pattern is formed only by the arrangement positions and the mounting angles θ1 to θ3 of the LED light source devices 25A to 25H. That is, the LED light source device 25A irradiates the road surface in front of the instrument main body 11, the LED light source devices 25B to 25E irradiate far away in the traffic direction of the road surface, and the LED light source devices 25F and 25G are opposite to the side on which the instrument main body 11 is disposed. The side road shoulder and the wall surface 6 (FIG. 1) are irradiated, and the LED light source device 25H irradiates the road shoulder and the wall surface 6 on the side where the instrument main body 11 is disposed. For this reason, while being able to reduce the cost of LED light source device 25B-25H, the effort of manufacture and management can be saved. Further, since the road light source and the wall surface 6 are evenly irradiated by the LED light source devices 25F and 25G, the wall surface luminance of 1.5 times or more is ensured with respect to the road surface luminance.

Next, the power supply devices 22A and 22B will be described with reference to FIG.
A terminal block for connecting a power line (not shown) from a commercial power source to a space R formed by placing the LED light source devices 25A to 25H close to the upper side of the instrument body 11 below the unit mounting plate 26. 28 is fixed. The terminal block 28 is connected to the power supply devices 22A and 22B by a power cable (not shown).
The power supply devices 22 </ b> A and 22 </ b> B are arranged along the transverse direction and are fixed to both side surfaces of the instrument main body 11. The two power supply devices 22A and 22 share power supplied to a plurality (eight) of LED light source devices 25A to 25H. For example, the power supply device 22A arranged on one side supplies power to the four LED light source devices 25A to 25C, 25G arranged near the power supply device 22A, and the power supply device 22B arranged on the other side remains. The four LED light source devices 25D, 25E, 25G, and 25H are configured to supply power.

As described above, since the power supplied to the plurality of (eight) LED light source devices 25A to 25H is shared by the two power supply devices 22A and 22B, even if one of the power supply devices 22A and 22B stops supplying power. Some of the LED light source devices 25A to 25H can be turned on by other power supply. Therefore, even when the LED tunnel lighting device 1 is arranged at a relatively wide arrangement interval (span), the road surface luminance is reduced, but the dark region due to the stop of the power supply can be minimized.
Further, the pair of opposed LED light source devices 25B and 25C arranged on one side and the pair of opposed LED light source devices 25D and 25E arranged on the other side are connected to different power supply devices 22A and 22B. Even if the power supply of one of the power supply devices 22A and 22B is stopped, the pair can be turned on by the other power supply, so the road surface brightness is reduced while maintaining the irradiation range and the brightness distribution in the traffic direction, although the road surface brightness is reduced. Can continue to illuminate.

Next, the heat dissipation structure of the LED tunnel lighting device 1 will be described with reference to FIGS. 1 and 4.
The unit mounting plate 26 and the LED mounting plate 27 are formed of a material such as aluminum having excellent thermal conductivity. The unit mounting plate 26 and the LED mounting plate 27 together with the heat sink 23 constitute a heat radiating member.
The heat sink 23 is configured as an aluminum die cast or an aluminum casting excellent in thermal conductivity, and is provided in a back surface opening (opening) 11 a provided on the back surface of the instrument body 11. The heat sink 23 includes a base portion 23 a disposed in the instrument main body 11 and an extending portion (part) 23 b extending from the back surface opening 11 a to the gap D between the instrument main body 11 and the wall surface 6. The base portion 23a is formed larger than the back surface opening 11a, is disposed in the device body 11 and is fixed to the back surface of the device body 11, and closes the back surface opening 11a. The extending portion 23b is provided with a vertically extending groove 23c, and a plurality of (in this embodiment, seven) radiating fins 23d are formed. A groove 23e is formed in the base 23a of the heat sink 23 so as to correspond to the back surface opening 11a, and the packing 17 is disposed in the groove 23e so that the packing 17 is interposed between the heat sink 23 and the back surface opening 11a. Insertion of water or the like into the instrument main body 11 is prevented.

  By the way, in the tunnel 2, the wind flows along the wall surface 6 by the passage of the vehicle and the ventilation blower provided in the tunnel 2. In the present embodiment, since the extending portion 23b of the heat sink 23 is disposed in the gap D between the instrument body 11 and the wall surface 6, the LED light source devices 25A to 25H are cooled by the wind flowing along the wall surface 6. More effective cooling. Since the extending part 23b is provided outside the instrument main body 11, the thickness of the instrument main body 11 can be made thinner than when the entire heat sink 23 is accommodated in the instrument main body. Moreover, since the groove | channel 23c was provided in the extension part 23b and the several heat radiating fin 23d was formed, the heat dissipation of LED light source device 25A-25H is improved and LED light source device 25A-25H can be extended in lifetime. Since the groove 23c is formed vertically, it is possible to prevent dust and water from accumulating in the groove 23c. As a result, corrosion of the heat sink 23 can be suppressed and cooling efficiency can be improved.

  Since the heat sink 23 is formed using aluminum having excellent heat dissipation, there is a possibility that the heat sink 23 may corrode due to water leakage in the tunnel 2 or adhesion of a snow melting agent sprayed on the roadway outside the tunnel 2. In the present embodiment, since the unit mounting plate 26 is detachably provided to the heat sink 23, for example, when the corrosion of the heat sink 23 progresses and the heat sink 23 needs to be replaced, the LED tunnel lighting fixture It is not necessary to replace the entire unit 1, and only the heat sink 23 can be replaced by removing the unit mounting plate 26. Further, since the base 23a of the heat sink 23 is formed larger than the rear opening 11a and is disposed in the instrument main body 11, even if the heat sink 23 is corroded and deteriorated, it remains in the instrument main body 11.

Hereinafter, the support structure of the unit mounting plate 26 will be described with reference to FIGS. 3 and 7.
7 is a view showing a support structure of the unit mounting plate 26, FIG. 7A is a cross-sectional view showing the LED tunnel lighting device 1, and FIG. 7B is a view taken along an arrow X in FIG. 7A. FIG.
A plurality of unit mounting screws 29 for locking the unit mounting plate 26 are mounted on the front surface of the heat sink 23. A hook 31 for fixing the unit mounting plate 26 is provided on the front surface on one side of the heat sink 23.
A mounting hole 26 a that engages with the unit mounting screw 29 is formed in the unit mounting plate 26 at a position corresponding to the unit mounting screw 29. A crescent 32 that engages with the hook 31 is fixed to the front surface on one side of the unit mounting plate 26 by a crescent mounting bracket 33. The hook 31, the crescent 32 and the crescent mounting bracket 33 constitute a crescent lock 34.

  By the way, the life of the LED 20 is long, and the light distribution pattern is rarely changed after the LED tunnel lighting device 1 is installed, but the light amount may be changed after the LED tunnel lighting device 1 is installed. In this case, it is necessary to replace the LED light source devices 25A to 25H. When the LED light source devices 25A to 25H are replaced, traffic in the tunnel 2 (FIG. 1) is often restricted. In the present embodiment, since the plurality of LED light source devices 25A to 25H are fixed to the unit mounting plate 26 that is detachably attached to the instrument body 11, the LED light source devices 25A to 25H are replaced. Only needs to replace the unit mounting plate 26, and adjusts the arrangement of the LED light source devices 25A to 25H even if the arrangement positions and the mounting angles θ1 to θ3 of the LED light source devices 25A to 25H are different as described above. Save time and effort. Thereby, compared with the case where LED light source device 25A-25H is replaced | exchanged separately, the replacement time of LED light source device 25A-25H can be shortened, As a result, the time which regulates the lane 5 can be shortened. In addition, since the terminal block 28 is also fixed to the unit mounting plate 26 and unitized, the terminal block 28 can be replaced at the same time when the LED light source devices 25A to 25H are replaced.

  Since the unit mounting plate 26 is fixed by the crescent lock 34, the unit mounting plate 26 can be attached and detached without using a tool. Also. Since the unit mounting plate 26 is locked by a plurality of mounting screws 29, when the crescent lock 34 is unlocked, it is not necessary for the operator to press the unit mounting plate 26 by hand. Detachable workability can be improved. Furthermore, if a handle (not shown) is provided on the unit mounting plate 26, the detachability of the unit mounting plate 26 can be further improved. By configuring the unit mounting plate 26 in this way, the LED tunnel lighting fixture 1 excellent in maintainability is realized, and the time for regulating the lane 5 can be further shortened.

  As described above, according to the present embodiment, the heat sink 23 that closes the back surface opening 11a and extends to the gap S between the device body 11 and the wall surface 6 is provided in the back surface opening 11a provided on the back surface of the device body 11. The LED light source devices 25 </ b> A to 25 </ b> H are provided directly on the heat sink 23 or with the heat conductive unit mounting plate 26 interposed therebetween. With this configuration, since the aluminum heat sink 23 is cooled by the wind flowing along the wall surface 6, the LED light source devices 25A to 25H can be more effectively cooled. Moreover, for example, corrosion of the instrument body 11 can be prevented by making only the heat sink 23 made of aluminum. Furthermore, since the heat sink 23 extends to the outside of the instrument main body 11, the thickness of the instrument main body 11 can be reduced as compared with the case where the entire heat sink is accommodated in the instrument main body.

  Moreover, according to this Embodiment, the heat sink 23 is provided with the groove 23c extended up and down in the extension part 23b extended to the clearance gap D of the instrument main body 11 and the wall surface 6, and forms several radiation fin 23d. The configuration. Since the heat radiating fins 23d are formed on the heat sink 23, the heat dissipation of the LED light source devices 25A to 25H is improved. Further, since the grooves 23c are formed vertically, it is possible to prevent dust and water from accumulating in the grooves 23c. As a result, corrosion of the heat sink 23 can be suppressed and cooling efficiency can be improved.

  Further, according to the present embodiment, the unit mounting plate 26 provided with the LED light source devices 25 </ b> A to 25 </ b> H is configured to be detachable from the heat sink 23. With this configuration, for example, when corrosion of the heat sink 23 made of aluminum progresses and it becomes necessary to replace the heat sink 23, the heat sink 23 can be replaced by removing the unit mounting plate 26 while leaving the instrument body 11 as it is. can do.

However, the above embodiment is an aspect of the present invention, and it is needless to say that the embodiment can be appropriately changed without departing from the gist of the present invention.
For example, in the above embodiment, eight LED light source devices 25A to 25H are arranged four in the transverse direction and three in the traffic direction. However, the number of LED light source devices, the arrangement position, and the mounting angle may be set as desired. It can be suitably changed according to the light pattern. For example, for tunnels that have a low design speed and may be relatively dark (for example, when the design road surface brightness is 0.75 cd / m ² , the installation height H is about 5 m and the installation interval S is about 20 m), As shown in FIGS. 8 and 9, a relatively small number (for example, five) of LED light source devices 25 </ b> A to 25 </ b> E are arranged, and these LED light source devices 25 </ b> A to 25 </ b> E are connected to one power supply device 22. Good. In this case, one LED light source device 25A is disposed so that light is incident perpendicularly to the plane of the lid body 13 to irradiate the front surface of the instrument body 11, and the pair of LED light source devices 25B and 25C are disposed on the lid body 13. A pair of LED light source devices 25D and 25E are arranged so as to be opposed to each other in the traffic direction so that the light K is incident obliquely with respect to the plane and the light K crosses each other to illuminate both sides of the traffic direction. It is only necessary to make the light irradiable in a wide range by making the light incident obliquely with respect to the plane, and opposing each other in the transverse direction so that the lights cross each other and illuminate the far sides in the transverse direction. More specifically, the LED light source device 25 </ b> A is directly attached to the unit attachment plate 26, and the LED light source devices 25 </ b> B to 25 </ b> E are attached to the unit attachment plate 26 via the LED attachment plate 27. In addition, the pair of LED light source devices 25B and 25C are symmetrically arranged with a mounting angle θ1 about the straight line L passing through the center of the instrument body 11, and the lid body among the light K of the LED light source devices 25C and 25B facing each other. The rear surface reflected light K2 reflected by the inner surface 13 is disposed at a position where it reflects toward the road surface. Thus, since the LED light source device is fixed to the detachable unit mounting plate 26, simply replacing the unit mounting plate 26 can easily change the number, arrangement position, and mounting angle of the LED light source devices, It is also possible to easily change the light distribution pattern.

Moreover, in the said embodiment, although the cup part 30 of the reflecting plate 24 was formed in flat surface shape, you may form in the curved surface shape which has the curvature of a parabola.
Moreover, in the said embodiment, although illustrated about the both-sides arrangement | positioning which arrange | positions the LED tunnel lighting fixture 1 in both wall surface 6A, 6B in the tunnel 2, it is not restricted to this, The LED tunnel lighting fixture 1 is both wall surfaces in the tunnel 2 It is good also as a one-sided arrangement | positioning arrange | positioned only to the one side of 6A, 6B.
Moreover, in the said embodiment, although the fixing tool which fixes the unit attachment board 26 to the heat sink 23 was comprised as the crescent lock 34, it is not limited to this, For example, you may be comprised as a snap lock. .

DESCRIPTION OF SYMBOLS 1 LED tunnel lighting fixture 2 Tunnel 6 Wall surface 8 Fixed leg 11 Appliance main body 11a Back opening (opening)
13 Lid (transparent plate)
23 Heat sink (heat dissipation member)
23c Groove 23d Radiation fin 25A-25H LED light source device (LED light source)
26 Unit mounting plate D Clearance

Claims (4)

An instrument body having a built-in LED light source, covering the front surface and having a lid that transmits light from the LED light source, and fixing legs provided on the back side of the instrument body are fixed to the wall surface and ceiling surface of the tunnel. In the LED tunnel lighting device installed with a gap between the back surface of the device body and the wall or ceiling surface,
The opening provided on the back surface of the instrument body is provided with a heat dissipating member that closes the opening and extends to a gap between the instrument body and the wall surface or ceiling surface, and the LED light source is provided on the heat dissipating member,
The heat dissipating member includes a base portion that closes the opening, and an extending portion that extends from the opening to the back side of the instrument body,
The base is formed to be larger than the opening, disposed in the instrument body and fixed to the back of the instrument body,
The LED tunnel lighting fixture characterized by attaching to the edge | side of the said instrument main body the hook which hooks on the edge of the said cover body and prohibits the opening of the said cover body.   2. The LED tunnel lighting device according to claim 1, wherein packing is provided at an opening edge of the device main body that contacts the lid.   3. The LED tunnel lighting device according to claim 1, wherein a flat bar is provided on a back surface of the device main body, and attachment holes for attachment to the fixed leg are provided at both ends of the flat bar. 4.   The LED tunnel lighting device according to any one of claims 1 to 3, wherein a groove in which a packing is disposed is formed in a base portion of the heat radiating member over a circumference of the opening.

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