JP7265415B2 - lighting equipment - Google Patents

Description

The present invention relates to lighting devices.

In general, lighting devices are installed in tunnels through which vehicles and people pass. FIG. 9 is a cross-sectional view of a conventional lighting device (see Patent Document 1). The illumination device 300 includes a hollow square tubular main frame 301, a pair of side frames closing openings at both ends of the main frame 301, a glass cover 330 fixed to the main frame 301, and a main frame 301. A plurality of LED substrates 321 fixed on a support wall 310, a power supply unit 322, a plate-like member 323 to which the power supply unit 322 is attached and fixed to the bottom wall 311 of the main frame 301, and the plate-like member 323 to the bottom wall. a plurality of bolts N4 fixed to 311;

The main frame 301 has a support wall 310 , a bottom wall 311 facing the support wall 310 , and two side walls 312 . Each side wall 312 has an extension extending above the support wall 310, and a cover 330 is attached between a pair of opposed extensions. The main frame 301 is obtained by extrusion molding, and has a uniform cross-sectional shape in the arrow Z direction except for bolt insertion holes formed after extrusion molding.

The plate member 323 is a metal member that fixes the power supply unit 322 to the main frame 301 and radiates heat from the power supply unit 322 to the main frame 301 side. In order to improve the heat dissipation efficiency of the power supply unit 322, the plate-like member 323 preferably overlaps the bottom wall 311 exactly, and the plate-like member 323 is fixed to the bottom wall 311 with a plurality of bolts N4. Each bolt N4 is passed through a bolt insertion hole formed in each of the bottom wall 311 and the plate member 323, and a nut (not shown) is screwed thereon.

JP 2018-190506 A

In the conventional illumination device 300 described above, a plurality of bolt insertion holes are formed in the bottom wall 311 in order to fix the plate member 323 to the bottom wall 311 . It has been demanded to reduce the number of bolt insertion holes formed in the main frame 301 for the reason that they can become an intrusion path for the bolts.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lighting device capable of reducing the number of bolt insertion holes formed in a main frame.

A lighting device according to the present invention includes a main frame having a bottom wall and side walls extending from the bottom wall, a light source housed in the main frame, a power supply unit for supplying power to the light source, and the power supply. a plate-like member to which a unit is attached and fixed to the inner surface of the bottom wall; The pressing fitting includes a flat plate portion formed with a pin insertion hole through which the pin is inserted, and a pair of abutting pieces that hang downward from both ends of the flat plate portion sandwiching the pin insertion hole toward the plate member. wherein the outer edge of the flat plate portion on the sidewall side is positioned between the convex portion and the bottom wall and abuts against the convex portion, and a nut is screwed onto a pin passed through the pin insertion hole. It is characterized in that the pair of contact pieces presses the plate-like member toward the bottom wall side by being brought together.

According to the present invention, the plate-like member can be pressed toward the bottom wall by the pressing metal instead of the conventional bolt (see bolt N4 in FIG. 9) penetrating the bottom wall and the plate-like member. It is possible to reduce the number of bolt insertion holes formed in the .

1 is a perspective view of a lighting device according to an embodiment of the present invention; FIG. FIG. 2 is a cross-sectional view taken along line AA in FIG. 1; FIG. 3 is a cross-sectional view taken along line BB in FIG. 2; FIG. 2 is a plan view of the illumination device of FIG. 1 with a cover and a light source removed; FIG. 5 is a perspective view of the pressing metal fitting of FIG. 4; FIG. 6 is a plan view of the pressing metal fitting of FIG. 5; FIG. 6 is a side view of the pressing metal fitting of FIG. 5; FIG. 6 is a rear view of the pressing metal fitting of FIG. 5; FIG. 10 is a cross-sectional view of a conventional lighting device;

A “lighting device” according to one embodiment of the present invention will be described with reference to FIGS. The illumination device 1 shown in FIGS. 1 and 2 illuminates the inside of a tunnel, and is also called a “tunnel lamp” or “tunnel illumination”. Since the lighting device 1 is installed outdoors, waterproof specifications are required.

This lighting device 1 includes a main frame 2, a pair of brackets 13, a pair of side frames 3, a plurality of metal fittings 6, a cover 4, a light source 5, a power supply unit 10, a plate member 8, a pressing It comprises a metal fitting 7, a plurality of bolts and nuts for fixing these parts, and a plurality of packings and the like for sealing between these parts.

As shown in FIGS. 2 and 4 , the main frame 2 includes a rectangular plate-shaped bottom wall 21 and a pair of side walls 22 extending from two long sides forming the outer edge of the bottom wall 21 . The arrow Z in FIGS. 1 to 4 indicates the long side direction of the bottom wall 21, the arrow X indicates the short side direction of the bottom wall 21, and the arrow Y indicates the thickness direction of the bottom wall 21. As shown in FIG. The main frame 2 is obtained by extrusion molding, which is relatively inexpensive to manufacture, and has a uniform cross-sectional shape over the entire length in the direction of the arrow Z (long side direction) except for the bolt insertion holes formed after extrusion molding. It's becoming Moreover, in this example, the main frame 2 is made of an aluminum alloy.

A groove 23 for attaching the packing 12, a bolt hole 24 into which a side frame fixing bolt is screwed, a rail 25 for attaching the metal fitting 6, and a pressing metal fitting 7 abut on the inner surface of each of the pair of side walls 22. A convex portion 26 is provided. These grooves 23, bolt holes 24, rails 25, and protrusions 26 extend in the arrow Z direction. These grooves 23, bolt holes 24, rails 25, and projections 26 are integrally formed together with the bottom wall 21 and the pair of side walls 22 when the main frame 2 is extruded.

A groove 23 is provided at the end of the side wall 22 remote from the bottom wall 21 . Two bolt holes 24 are provided in each side wall 22 , one is provided at the boundary between the side wall 22 and the bottom wall 21 and the other is provided near the groove 23 . A rail 25 is provided between the groove 23 in the side wall 22 and the bottom wall 21 . The projection 26 is provided between the rail 25 and the bolt hole 24 near the bottom wall 21 in the side wall 22 . The projection 26 protrudes from the inner surface of the side wall 22 in parallel with the bottom wall 21 and is formed to have an L-shaped cross section bent at right angles to the side opposite to the bottom wall 21 halfway.

As shown in FIG. 3, a bolt insertion hole 21a is formed at one longitudinal end of the bottom wall 21 . Two bolt insertion holes 21a are formed at intervals in the width direction of the bottom wall 21 (see FIG. 4). Although the other longitudinal end of the bottom wall 21 is not shown in FIGS. 3 and 4, two bolt insertion holes 21a are formed at the other end in the same manner as the one end.

A pair of brackets 13 are for fixing the lighting device 1 to the wall surface of the tunnel, and are fixed to the outer surfaces of both end portions of the bottom wall 21 . Each bracket 13 is formed with two bolt insertion holes 13a overlapping with the two bolt insertion holes 21a. A bolt 94 with waterproof packing is passed through these bolt insertion holes 13a and 21a, and a nut 95 is screwed onto the bolt 94, thereby fixing the bracket 13 to the bottom wall 21. As shown in FIG. The illumination device 1 is fixed to the wall surface of the tunnel so that the cover 4 faces downward or obliquely downward.

A pair of side frames 3 are for closing openings at both ends of the main frame 2 . Each side frame 3 is fixed to the main frame 2 by four side frame fixing bolts. These four side frame fixing bolts are screwed into the bolt holes 24 described above in the direction of the arrow Z, respectively. A cable bush 14 through which an electric wire (not shown) is passed is attached to one of the side frames 3 . A packing (not shown) is attached between each side frame 3 and the main frame 2 .

A plurality of metal fittings 6 are for fixing the cover 4 and the light source 5 to the main frame 2 . The metal fittings 6 are slidable over the entire length of the rails 25 and are non-slidably fixed by metal fitting fixing bolts 11 . Two bolt holes 65 are formed in the fitting 6 . These two bolt holes 65 have the same diameter, and both the cover fixing bolt 17 and the light source fixing bolt 15 can be screwed into them.

The cover 4 is for closing the opening of the main frame 2 , and is fixed to the main frame 2 so as to face the bottom wall 21 . The cover 4 is made of colorless and transparent glass, and is shaped like a rectangular plate substantially the same as the bottom wall 21 . As shown in FIG. 2, the cover 4 has a plurality of insertion holes 41 formed therein. A flanged cylindrical packing 18 is attached to each insertion hole 41 , and a cover fixing bolt 17 is passed through the inner side of the cylindrical portion of the packing 18 . The packing 18 seals the gap between the cover fixing bolt 17 and the cover 4 (the gap between the insertion holes 41). The cover 4 is fixed to the main frame 2 by screwing the cover fixing bolts 17 into the bolt holes 65 of the metal fittings 6 .

The packing 12 described above seals between the pair of side walls 22 and the cover 4 and between the pair of side frames 3 and the cover 4 .

Light source 5 is housed between bottom wall 21 and cover 4 . The light source 5 includes a support plate 51 facing the cover 4 and the bottom wall 21 and a plurality of LED substrates 52 attached to the surface of the support plate 51 on the cover 4 side. Bolt insertion holes through which the light source fixing bolts 15 are passed are formed at the four corners of the support plate 51 . The light source 5 is fixed to the main frame 2 by screwing the light source fixing bolts 15 passed through these bolt insertion holes into the bolt holes 65 of the metal fittings 6 .

The power supply unit 10 supplies power to and controls the light source 5, and is accommodated between the light source 5 and the bottom wall 21, as shown in FIG. The power supply unit 10 and the plurality of LED boards 52 are connected by electric wires (not shown). The power supply unit 10 includes a block-shaped body portion 10c and mounting portions 10a and 10b provided at both ends of the body portion 10c.

The plate member 8 is a member that fixes the power supply unit 10 to the main frame 2 and radiates heat from the power supply unit 10 to the main frame 2 side. The plate member 8 is made of an aluminum alloy and has a rectangular plate shape. As shown in FIGS. 2 to 4, the plate member 8 has one surface overlaid on the main body portion 10c and the other surface overlaid on the inner surface of the bottom wall 21. As shown in FIGS. In this example, the plate-like member 8 has a dimension in the width direction (direction of arrow X) about 80% of that of the bottom wall 21 and a dimension in its longitudinal direction (direction of arrow Z) about 40% of that of the bottom wall 21 . be.

As shown in FIGS. 3 and 4, at one longitudinal end of the plate-like member 8, two bolt insertion holes 21a formed at one longitudinal end of the bottom wall 21 and two bolt insertion holes 21a formed at one of the brackets 13 are provided. Two bolt insertion holes 84 are formed to overlap the bolt insertion holes 13a. A bolt 94 is passed through these bolt insertion holes 13a, 21a, 84, and a nut 95 is screwed onto the bolt 94, thereby fixing the bracket 13, the bottom wall 21, and the plate member 8 to each other.

As shown in FIGS. 3 and 4, two pins 81 are provided at the other longitudinal end of the plate member 8 . The two pins 81 stand from one surface of the plate-like member 8 (the surface overlapping the power supply unit 10) and are spaced apart in the width direction of the plate-like member 8. As shown in FIG. Each pin 81 is formed in a cylindrical shape and has a male thread on its outer peripheral surface. The pin 81 is passed through a pin insertion hole 73 of the pressing metal fitting 7, which will be described later, and a nut 91 is screwed thereon. A cylindrical positioning boss 82 for positioning the pressing metal fitting 7 is provided in the vicinity of each pin 81 .

As shown in FIGS. 3 and 4, two pins 83 for fixing the power supply unit 10 are provided in the central portion of the plate member 8 in the longitudinal direction. One pin 83 is passed through a hole formed in the mounting portion 10a and a nut 93 is screwed thereon. The other pin 83 is passed through a hole formed in the mounting portion 10b and a nut 93 is screwed thereon.

The pressing metal fitting 7 is obtained by subjecting a metal plate to press working or the like. As shown in FIGS. A pair of abutting pieces 75 hanging down toward the plate-like member 8 from both ends sandwiching the 73 are provided. The distance between the pair of contact pieces 75 increases with distance from the flat plate portion 70 .

The flat plate portion 70 has a T shape and is composed of a first rectangular flat plate portion 71 having the pin insertion hole 73 formed therein and a second rectangular flat plate portion 72 protruding from the long side of the first flat plate portion 71. formed. The pair of contact pieces 75 hang down from the short sides of the first flat plate portion 71 . A portion indicated by reference numeral 74 where the first flat plate portion 71 and the second flat plate portion 72 intersect is referred to as a "corner" in this specification. The above-described positioning boss 82 positions the pressing metal fitting 7 with respect to the frame 2 and the plate member 8 by being positioned at the corner portion 74 of the pressing metal fitting 7 when the lighting device 1 is assembled.

As shown in FIG. 2, the pressing metal fitting 7 is arranged such that the outer edge of the flat plate portion 70, that is, the free end of the second flat plate portion 72 is positioned in the gap between the projection 26 and the bolt hole 24 and contacts the projection 26. The pair of contact pieces 75 press the plate-like member 8 toward the bottom wall 21 by screwing the nut 91 onto the pin 81 that is in contact with and passed through the pin insertion hole 73 . In addition, in this example, two pressing metal fittings 7 are used, and these pressing metal fittings 7 press the plate-like member 8 toward the bottom wall 21 side at both ends in the width direction of the plate-like member 8 .

Thus, the plate-like member 8 has one end fixed to the bottom wall 21 by two bolts 94 and the other end pressed against the bottom wall 21 by two pressing metal fittings 7 . The plate-like member 8 pressed toward the bottom wall 21 by the pressing metal fitting 7 overlaps the bottom wall 21 exactly without being lifted from the bottom wall 21 over its entire area. Therefore, the heat of the power supply unit 10 is effectively radiated to the main frame 2 through the plate member 8 .

The lighting device 1 presses the other end of the plate-like member 8 toward the bottom wall 21 by means of a pressing metal fitting 7 instead of the conventional bolt (see bolt N4 in FIG. 9) passing through the bottom wall and the plate-like member. Therefore, the number of bolt insertion holes formed in the main frame 2 is smaller than that of the conventional product (see FIG. 9). In addition, since one end of the plate member 8 is fixed to the bottom wall 21 by a bolt 94, the plate member 8 does not shift. Furthermore, since one end of the plate-like member 8 is fixed to the bottom wall 21 together with one of the brackets 13 with a common bolt 94, the plate-like member 8 and the bracket 13 are separately fixed to the bottom wall 21 by bolts. The number of bolt insertion holes is reduced.

As a reference example, it is conceivable to extend the plate-like member 8 in the direction of the arrow Z and bolt both ends of the plate-like member 8 together with the brackets 13 to the bottom wall 21 . The extension of the shaped member 8 increases the weight and the cost. On the other hand, in this example, the plate-like member 8 can be made to have the minimum required size.

Further, in the above-described embodiments, tunnel lights have been described as examples of lighting devices, but the lighting device of the present invention is not limited to tunnel lights, and can be applied to various lighting devices such as street lights and security lights. can.

In addition, the above-described embodiment merely shows a typical form of the present invention, and the present invention is not limited to the embodiment. That is, various modifications can be made without departing from the gist of the present invention.

Reference Signs List 1 lighting device 2 main frame 7 pressing metal fitting 8 plate-like member 10 power supply unit 21 bottom wall 22 side wall 26 convex portion 70 flat plate portion 73 pin insertion hole 75 contact piece 81 pin 91 nut

Claims (4)

a main frame comprising a bottom wall and side walls erected from the bottom wall;
a light source housed within the mainframe;
a power supply unit that supplies power to the light source;
a plate-shaped member to which the power supply unit is attached and fixed to the inner surface of the bottom wall;
and a press fitting,
A protrusion is provided on the inner surface of the side wall,
A pin is erected from the plate member,
The pressing metal fitting includes a flat plate portion formed with a pin insertion hole through which the pin is inserted, and a pair of abutment pieces that hang down from both ends of the flat plate portion sandwiching the pin insertion hole toward the plate member. , and
An outer edge portion of the flat plate portion on the side wall side is positioned between the convex portion and the bottom wall and is in contact with the convex portion, and a nut is screwed onto a pin passed through the pin insertion hole. The lighting device, wherein the pair of contact pieces presses the plate member toward the bottom wall. A bracket fixed to the outer surface of the bottom wall,
Overlapping bolt insertion holes are formed in the bracket, the bottom wall, and the plate-shaped member, and the bracket, the bottom wall, and the plate-shaped member are fixed to each other by bolts passed through the bolt insertion holes,
The lighting device according to claim 1, wherein the plate member has one end fixed to the bottom wall by the bolt, and the other end pressed against the bottom wall by the pressing fitting. The lighting device according to claim 1 or 2, wherein the distance between the pair of contact pieces increases with increasing distance from the flat plate portion. The flat plate portion is formed in a T shape composed of a first flat plate portion and a second flat plate portion,
The plate member according to any one of claims 1 to 3, wherein a positioning boss is provided at a corner where the first flat plate portion and the second flat plate portion intersect. lighting system.

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