JP6130231B2 - Light structure of traffic light - Google Patents

Description

  The present invention relates to a lamp structure of a traffic light.

  2. Description of the Related Art Conventionally, a traffic signal lamp mounted on a columnar body installed on a road or the like includes a rear casing having an opening on the front side and a lid capable of sealing the opening of the rear casing (for example, Patent Documents). 1).

  The traffic light lamp described in Patent Document 1 is formed of an aluminum alloy such as an aluminum die-cast molded product in order to facilitate the forming process.

Japanese Utility Model Publication No. 64-43498

  However, since the aluminum alloy has low corrosion resistance, there is a problem that rust is easily generated. Therefore, for example, when a lamp is formed of a stainless steel plate in order to improve the corrosion resistance, the weight increases, and there is a problem in the mounting operation and maintenance performance of the lamp.

  On the other hand, if the thickness of the stainless steel plate is reduced in order to reduce the weight, the rigidity may be reduced and the strength may be insufficient.

  Therefore, the present invention provides a lamp structure for a traffic light that can achieve both weight reduction and high rigidity when a lamp is formed of a steel plate.

  A lamp structure of a traffic light according to the present invention includes a rear case that is open on the front side and a lid that closes the opening of the rear case and has a lamp attached thereto, and the rear case is made of a steel plate. ing. The rear housing includes a top plate, a pair of side plates extending downward from the left and right ends of the top plate, a bottom plate that bridges the lower ends of the pair of side plates, and the top plate, the side plate, and the bottom plate. A back plate having a peripheral edge joined to a rear end portion, and the top plate and the pair of side plates are integrally formed in a U-shape when viewed from the front, and each of the top plate, the side plate, and the bottom plate The cross-sectional shape along the front-rear direction has a U-shaped portion, and the thickness of the back plate is thinner than the thickness of the top plate, the side plate, and the bottom plate.

According to the lamp structure of the traffic light according to the present invention, since the top plate and the pair of side plates are integrally formed in a U shape in front view, the rigidity of the traffic light of the traffic light is improved. Moreover, since each of the top plate, the side plate, and the bottom plate has a U-shaped section in the front-rear direction, the rigidity is further improved.

  In addition, since a load is not applied to the back plate, there is little need for high rigidity compared to the top plate, the side plate, and the bottom plate. Therefore, the weight of the entire lamp can be reduced by making the thickness of the back plate thinner than that of the top plate, the side plate, and the bottom plate.

  Thus, in the present invention, when a lamp is formed of a steel plate, both high rigidity and light weight can be achieved.

FIG. 1 is a perspective view showing a three-light device of a traffic light according to an embodiment of the present invention, showing a state in which a lid is opened. FIG. 2 is a perspective view showing a rear housing of the first lamp disposed on the leftmost side in FIG. 1. FIG. 3 is an exploded perspective view of FIG. 4A is a perspective view showing a state in which the rear casing is cut in the vertical direction, and FIG. 4B is a cross-sectional view taken along line BB in FIG. 4A. 5A is an enlarged perspective view of a portion A in the bottom plate of FIG. 2, and FIG. 5B is a cross-sectional view taken along line CC of FIG. 5A. FIG. 6 is a rear view of the top plate, the side plate, and the bottom plate as viewed from the rear. FIG. 7 is an enlarged rear view of a portion D in FIG. FIG. 8 is a cross-sectional view showing a state where the back plate of FIG. 3 is cut along the vertical direction. FIG. 9 is a cross-sectional view showing a state in which a back plate according to another embodiment is cut along the vertical direction.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, UPR indicates the upper side in a state in which a traffic light lamp is attached to a columnar body installed on a road or the like, and LWR indicates the lower side. Moreover, RH shows the right side in the state which looked at the lamp of the traffic light from the front, and LH shows the left side. Further, FR indicates the front side, and RR indicates the rear side.

  As shown in FIG. 1, the three lamp device 1 of the traffic light according to the present embodiment is configured by connecting one lamp device in parallel in the left-right direction. Hereinafter, the leftmost lamp in front view is referred to as a first lamp 3, the central lamp is referred to as a second lamp 5, and the rightmost lamp is referred to as a third lamp 7. The present invention can also be applied to a plurality of lamps other than the three lamps 1 and a single lamp.

  As shown in FIG. 1, each of the first lamp 3 to the third lamp 7 includes a rear housing 9 and a lid 11. These rear housing 9 and lid 11 are formed by press-molding a steel plate.

  The lid 11 is rotatably supported on the upper end portion of the rear housing 9 via a hinge (not shown), and is configured to be able to seal the opening on the front side of the rear housing 9. The lid 11 is formed in a rectangular shape when viewed from the front, and a bent flange 13 is erected on the outer peripheral edge. Further, green, yellow, and red lamps (lamps) 15, 17, 19 are attached to the lamps 3, 5, 7 at the center of the lid 11.

  As shown in FIGS. 1 to 3, the rear housing 9 extends in the left-right direction by bridging the frame 21 integrally formed in a U-shape when viewed from the front and the lower ends of the frame 21. It is comprised from the baseplate 23 and the backplate 25 joined to these frames 21 and the back surface of the baseplate 23. FIG. In FIG. 2 and subsequent figures, the first lamp 3 will be described, but the second lamp 5 and the third lamp 7 have the same structure.

  The frame body 21 is integrally formed with a top plate 27 arranged on the upper side and extending in the left-right direction, and a pair of side plates 29 and 31 bent from both left and right ends of the top plate 27 and extending downward. It becomes.

  The lower ends of the side plates 29 and 31 have bent portions 45 and 47 that bend inward in the left-right direction. As shown in FIGS. 2 and 3, circular insertion holes 44 and 46 through which the wiring of the lamp body 15 is inserted are formed on the right side plate 31 in the first lamp 3. A plurality of rivet holes 48 are formed around the insertion holes 44 and 46. Since the rivet hole is also formed in the side plate of the second lamp 5, the side plate 31 of the first lamp 3 and the side plate of the second lamp 5 can be coupled via the rivet. Similarly, the second lamp 5 and the third lamp 7 are coupled via rivets.

  Here, as shown in FIGS. 4A and 4B, the cross-sectional shape along the front-rear direction of the side plates 29 and 31 has a U-shaped portion 41. Specifically, the side plate 29 includes a side plate main body portion 33 extending in a flat plate shape along the vertical direction and the front-rear direction, and a front side bent from the front end 33a of the side plate main body portion 33 and extending inward in the left-right direction. A flange portion 35, a sealing material holding flange portion 37 that is bent from the front end 35a of the front flange portion 35 and extends toward the front side, and is bent from the rear end 33b of the side plate body portion 33 so as to be inward in the left-right direction. And a rear flange portion 39 extending in the same manner. The U-shaped portion 41 is constituted by the side plate main body portion 33, the front flange portion 35, and the rear flange portion 39 described above. In other words, in the present embodiment, the side plates 29 and 31 are integrally formed with the U-shaped portion 41 and the sealing material holding flange portion 37. Moreover, the sealing material 43 shown in FIG. 1, for example, rubber packing, is fitted in the sealing material holding flange portion 37. As shown in FIG. 1, when the lid body 11 is closed, the flange 13 of the lid body 11 is fitted to the sealing material 43 of the sealing material holding flange portion 37 of the rear housing 9. Therefore, the sealing material 43 improves the sealing performance of the lamps 3, 5, 7 when the lid 11 closes the opening of the rear housing 9. The cross-sectional shapes of the top plate 27 and the bottom plate 23 are the same as the cross-sectional shapes of the side plates 29 and 31 and have a U-shaped portion 41.

  The bottom plate 23 is welded to bent portions 45 and 47 formed at the lower end of the side plate 25. This will be specifically described below.

  As shown in FIG. 5A, joggle portions 49 are formed at the left and right ends of the bottom plate 23. As shown in FIG. 3, in the state where the joggle portion 49 is in contact with and fitted on the bent portions 45 and 47 of the side plates 29 and 31, the front and rear direction and the upper and lower sides are along the edges of the bent portions 45 and 47. It is welded continuously over the entire length in the direction (U-shape). That is, the welded portions W1 and W2 between the bottom plate 23 and the side plates 29 and 31 are U-shaped like the edges of the bent portions 45 and 47. The bottom plate 23 is thicker than the top plate 27 and the side plates 29 and 31. Moreover, in this embodiment, various weldings, such as laser welding and plasma welding, can be applied as welding.

  Furthermore, as shown in FIGS. 6 and 7, the four corners of the first lamp 3 are also welded. Specifically, slits extending obliquely in the rear view are formed at four corners of the upper and lower end portions of the rear flange portion 39 of the side plates 29 and 31. By filling the gaps of the slits with the welded portions W3, W4, W5, and W6, the rigidity of the corners of the first lamp device 3 is improved. A similar slit is also formed at the corner of the front flange portion 35 of the side plates 29 and 31, and the gap between the slits is filled with the welded portion.

  Further, as shown in FIGS. 2 and 5A and 5B, the bottom plate 23 is formed with half-cut portions 51, 53, 55, 57 at four locations. The half-cut portions 51, 53, 55, 57 are formed in a circular shape when viewed from below, and as shown in FIG. Yes. These half punched portions 51, 53, 55, and 57 are provided to form mounting holes by striking and punching at the end of a tool such as a screwdriver at a site where a traffic light is installed on a columnar body or the like. ing. This mounting hole is used when another lamp is additionally installed below the bottom plate 23. Here, the half punched portions 51, 53, 55, and 57 are 70% or more of the plate thickness of the bottom plate 23 so that the bottom plate 23 is not plastically deformed by an impact from a tool applied to the bottom plate 23 when forming the mounting hole. It is preferable to have a depth. That is, if the depth of the half punched portions 51, 53, 55, 57 is 70% or more of the plate thickness, the punching can be easily performed with a small impact load, so that the impact force applied to the bottom plate 23 can be small.

  As shown in FIGS. 3 and 8, the back plate 25 is a flat plate having a rectangular shape when viewed from the front. Further, as shown in FIG. 3, the peripheral edge 61 of the back plate 25 is welded to the rear end portions of the top plate 27, the side plates 29 and 31, and the bottom plate 23. Specifically, since the rear flange portion 39 is formed at the rear end portions of the top plate 27, the side plates 29 and 31, and the bottom plate 23, the rear flange portion of the top plate 27, the side plate, and the bottom plate 23 is first formed. The peripheral edge 61 of the back plate 25 is brought into contact with 39. Next, continuous welding is performed over the entire circumference of the peripheral edge 61 of the back plate 25. Thus, the back plate 25 can be welded to the top plate 27, the side plates 29 and 31, and the rear flange portion 39 of the bottom plate 23. In FIG. 3, the welded portion W <b> 7 is shown over the entire circumference of the peripheral edge portion 61 of the back plate 25. Further, the thickness of the back plate 25 is formed thinner than the thicknesses of the top plate 27, the side plates 29, 31 and the bottom plate 23.

  Below, the effect by this embodiment is demonstrated.

(1) The lamp structure of the traffic light according to the present embodiment includes a rear housing 9 whose front side is opened, and a lid body 11 which closes the opening of the rear housing 9 and has a lamp body attached thereto. The housing 9 is made of a steel plate.

The rear housing 9 includes a top plate 27, a pair of side plates 29, 31 extending downward from the left and right ends of the top plate 27, and a bottom plate 23 that bridges the lower ends of the pair of side plates 29, 31. The top plate 27, the side plates 29 and 31, and the back plate 25 having a peripheral edge 61 joined to the rear end of the bottom plate 23. The top plate 27 and the pair of side plates 29 and 31 are viewed from the front. The top plate 27, the side plates 29, 31 and the bottom plate 23 each have a U-shaped portion 41 in the cross-sectional shape along the front-rear direction. The thickness is formed thinner than the top plate 27, the side plates 29, 31 and the bottom plate 23.

Thus, the top plate 27 and the pair of side plates 29 and 31 are integrally formed in a U-shape when viewed from the front, and each of the top plate 27, the side plates 29 and 31, and the bottom plate 23 is a cross-section along the front-rear direction. The shape has a U-shaped portion 41. Accordingly, the traffic lights 3, 5, and 7 have high rigidity.

  Further, since the back plate 25 is not loaded with much load, it is less necessary to make it more rigid than the top plate 27, the side plates 29, 31 and the bottom plate 23. Therefore, by making the plate thickness of the back plate 25 thinner than the plate thicknesses of the top plate 27, the side plates 29 and 31, and the bottom plate 23, the entire lamp can be reduced in weight.

  As described above, in the present invention, when the lamps 3, 5, and 7 are formed of steel plates, both high rigidity and light weight can be achieved.

(2) The thickness of the bottom plate 23 is formed thicker than the thickness of the top plate 27 and the side plates 29 and 31.

There may be a case where another new lamp is additionally installed under the lamp. In this case, since the other lamp is suspended from the bottom plate 23 and installed, a load directed downward is applied to the bottom plate 23. Accordingly, by forming the bottom plate 23 thicker than the top plate 27 and the side plates 29 and 31, it is possible to stably hold another lamp while suppressing an increase in the weight of the entire lamp. it can. Further, when the mounting hole is formed by hitting the bottom plate 23, deformation due to an impact applied to the bottom plate 23 can be suppressed.

(3) The bottom plate 23 has half-cut portions 51, 53, 55, 57.

Therefore, when installing another lamp hanging from the bottom plate 23, the half punched portions 51, 53, 55, and 57 are punched by punching at the end of the tool at the lamp installation site to form a mounting hole. This facilitates the work of additionally installing another lamp. Further, before the attachment holes are formed, the half-blanched portions 51, 53, 55, and 57 are not opened, so that it is possible to prevent rainwater or the like from entering the interior of the lamp.

(4) The peripheral portion 61 of the back plate 25 is continuously welded and joined to the rear end portions of the top plate 27, the side plates 29 and 31, and the bottom plate 23,
The bottom edges of the side plates 29, 31 extending downward from the left and right ends of the top plate 27 are fitted in contact with the bottom plate 23, and the side edges of the side plates 29, 31 are extended to the full length. Continuously welded to the bottom plate 23.

  Thus, the peripheral edge 61 of the back plate 25 is continuously welded and joined to the rear end portions of the top plate 27, the side plates 29 and 31, and the bottom plate 23, so that the sealing performance of the lamp is improved. It can improve and it can control that rainwater etc. permeate the inside of a lamp. Moreover, since the edge of the side plates 29 and 31 is continuously welded and joined to the bottom plate 23 over the entire length, the rigidity is improved and the sealing performance of the lamp is further improved.

  The present invention is not limited to the above-described embodiments, and various changes and modifications can be made.

  For example, the back plate 25 according to the present embodiment is a flat plate having a straight section as shown in FIG. However, as shown in FIG. 9, a back plate 63 in which a bulging portion 65 is formed by bulging the center in the vertical direction and the horizontal direction to the rear side may be applied. In this way, if the back plate is configured separately from the plate 27, the side plates 29, 31 and the bottom plate 23, the top plate 27, the side plate 29, It is sufficient to change only the back plate 63 without changing the 31 and the bottom plate 23.

  Further, as described with reference to FIG. 4, the side plate 29, 31, the top plate 27, and the bottom plate 23 are provided with the sealing material holding flange portion 37, but a form without the sealing material holding flange portion 37 may also be applied. it can.

  Furthermore, although four half-cut portions 51, 53, 55, and 57 are provided on the bottom plate 23, the number of the half-cut portions is not particularly limited.

  In the above-described embodiment, the material of the top plate 27, the side plates 29 and 31, the bottom plate 23, and the back plate 25 is preferably SUS430 (JIS: stainless steel), for example. Further, as an example, the plate thickness of the top plate 27 and the side plates 29 and 31 is preferably 1.0 mm, the plate thickness of the bottom plate 23 is 1.5 mm, and the plate thickness of the back plate 25 is preferably 0.8 mm.

3 First lamp (lamp)
5 Second lamp (lamp)
7 Third lamp (lamp)
9 Rear housing 11 Lid 15, 17, 19 Lamp 23 Bottom plate 25 Back plate 27 Top plate 29, 31 Side plate 41 U-shaped portion 51, 53, 55, 57 Half-cut portion 61 Peripheral portion 63 Back plate

Claims (4)

The rear case is provided with a rear case that is opened on the front side and a lid that is attached to the lamp body and closes the opening of the rear case, and the rear case is a lamp structure of a traffic light composed of a steel plate,
The rear housing is
With the top plate,
A pair of side plates extending downward from the left and right ends of the top plate;
A bottom plate that bridges the lower ends of the pair of side plates;
A back plate having a peripheral edge joined to the rear ends of these top plate, side plate and bottom plate,
The top plate and the pair of side plates are integrally formed in a U shape in front view,
Each of the top plate, the side plate and the bottom plate has a U-shaped cross section along the front-rear direction.
The lamp structure of a traffic light, wherein the thickness of the back plate is thinner than the thicknesses of the top plate, the side plate, and the bottom plate.   The lamp structure of the traffic light according to claim 1, wherein a thickness of the bottom plate is thicker than a thickness of the top plate and the side plate.   The lamp structure of a traffic light according to claim 1 or 2, wherein the bottom plate has a half-cut portion. The peripheral portion of the back plate is continuously welded and joined to the rear end of the top plate, the side plate, and the bottom plate,
The bottom edge of the side plate extending downward from the left and right ends of the top plate is fitted in contact with the bottom plate, and the edge of the side plate is continuously welded to the bottom plate over the entire length. The lamp structure of the traffic light according to any one of claims 1 to 3, wherein the lamp structure is joined.

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