JP5865025B2 - Railroad crossing warning light - Google Patents

Description

  The present invention relates to a railroad crossing warning light that is installed at a railroad crossing of a railway track and flashes a crossing warning to a passerby or a train.

  A railroad crossing warning light installed at a railroad crossing is a lamp that notifies flashers of the approach of a train to a person who crosses the railroad crossing, a vehicle or a person on the road that crosses the railroad crossing, and a vehicle. Two lights flashing alternately on the pillar are installed as one set.

  The level crossing alarm is to be provided on the left side from the road to the level crossing in principle on both sides of the railroad crossing line. In addition, a set of warning lights (two lights) flashing alternately in one direction will be added to the level crossing alarm at the place where the road where the level crossing is branched is divided into two or more. ing.

  Patent Document 1 describes the following as a problem when installing an alarm device at a level crossing where roads are intricately crossed. That is, it is necessary to attach a required number of warning lights to each end of each arm toward each road and to direct each arm in multiple directions. The light emitting diode (LED) used for the lamp unit of the warning light is: Since the range with good visibility is narrow, the number of lamp units must be considerably increased in order to view from all directions on one side of the track. In order to solve such problems, the cited document 1 proposes “a multi-display warning light in which a plurality of light emitting units facing each other in different directions are arranged together in a housing of one lamp”.

  Further, in Patent Document 2, the multi-display warning light is designed to be visible from many directions within a range of 180 degrees, so that another crossing warning light needs to be installed in the rear direction. As a solution to this problem, the solution was as follows: “A large number of light-emitting diodes are attached in a semicircular shape on both sides of the light-emitting diode substrate, and four of the light-emitting diode substrates are vertically aligned at the center of the lamp body. The omnidirectional railroad crossing warning light fixed at intervals of 90 degrees is proposed.

  By the way, the multi-surface display warning light described in Patent Document 1 is that three lamp units are housed in one housing of a lamp body in different directions, and there are many problems. In order to make it visible from the direction, it is not necessary to install another railroad crossing alarm in the rear direction, but it means that two or three lamp units can be seen depending on the viewing direction.

  Level crossing alarms should be equipped with two or more red flashlights, red flashlights will flash alternately during the operation of the alarm device, and the line-of-sight distance of the flashlight should be 45 meters or more, etc. There are provisions (notifications that define the details of technical standards for ordinary railway facilities (see former Ministry of Transportation Notification No. 177, Article 2-2)).

  However, in the multi-display warning light described in Patent Document 1, two or three lights installed adjacent to each other may blink simultaneously, and this regulation may not be satisfied. Another problem is the light emission shape of the warning light. The light emission shape of the warning light is circular, and the conventional warning light is unidirectionally displayed. Therefore, if the shape seen from the front is circular, there was no particular problem. In the case of a warning light that does, its shape becomes a problem.

  That is, the multi-surface display warning lamp described in Patent Document 1 is not only viewed as an ellipse depending on the viewing direction, but also the viewing angle even when the lamp unit is circular when viewed from the front of the lamp housing. Depending on the shape of the ellipse, when viewed from the front, a thin elliptical lamp unit is visible on both sides of the central circular lamp unit, and when viewed from an oblique direction, two lamp units can be viewed simultaneously. In addition, there is a problem that the shape changes depending on the viewing angle.

  Of course, this problem is not solved even in the omnidirectional crossing warning light described in Patent Document 2. According to the omnidirectional railroad crossing warning light described in Patent Document 2, when the LED mounting board is arranged in a cross shape, the light emitting surface looks circular only when viewed from the direction orthogonal to the LED mounting board, but obliquely When viewed from the direction, the light emitting surface is elliptical. Although it can be understood that a single device can be viewed from all directions of 360 degrees, the shape of the warning light changes depending on the viewing angle.

  In order to solve such a problem, the applicant first uses a light emitter in which LED mounting boards are arranged in a polyhedral three-dimensional structure, and creates an omnidirectional crossing warning light that does not change the light emission shape of the warning light depending on the viewing angle. Proposed (see Patent Document 3). As shown in FIG. 8, the omnidirectional railroad crossing warning light described in Patent Document 3 is an alarm device incorporating a polyhedral light emitter, and the polyhedral light emitter is composed of an assembly of red light emitting LED mounting boards. The LED mounting substrate is arranged in the polyhedral direction as a light emitting surface.

  According to the above-mentioned alarm device, it is only necessary to install a pair of alarm lights (two lights) that alternately flash, even at locations where the railroad crossing road branches into two or more, like conventional alarm lights. There is no need to further add a set of warning lights (two lights) that alternately flash in one direction, and even if there are two or more roads crossing, it is necessary to consider the crossing angle of the road with respect to the crossing By installing a set of warning lights (2 lights) at a position where they can be seen from each road, it was possible to clearly issue a railroad crossing warning to passers and trains on each road.

  However, it has been found that the omnidirectional railroad warning light described in the example of Patent Document 3 also has some problems. As shown in FIG. 8, the number of faces of the multi-surface light emitter 21 described in the example of Patent Document 3 is, as shown in FIG. A total of 27 LED light emitting surfaces were formed by combining the body 23 and a 9-sided inverted pyramid lower light emitter 24 having an obliquely downward light emitting surface on the lower stage. It turned out that there are some problems in the omnidirectional railroad warning light using this multi-surface light emitter.

  That is, according to this multi-surface light emitter, it is possible to emit light uniformly in all directions of the three-dimensional space including the top and bottom of the spherical surface and the circumferential direction, but on the other hand, the number of LEDs directed to the level crossing passerby Is less and the brightness is visually reduced. In addition, a partition plate was provided in the space between the spherical lens that covers the polyhedral light emitter and the light emitter of the polyhedral structure to prevent artificial lighting from sunlight from the back of the warning light at every central angle of 120 °. For those skilled in the art, the part of the partition plate appears darker than the light emitting surface, and the spherical lens is brightened and darkened, so that the light emitting area is substantially reduced.

Japanese Utility Model Publication No. 6-37047 Patent Publication 2005-247133 JP 2010-179664 A

  The problem to be solved is that when the omnidirectional crossing warning light described in the embodiment of Patent Document 3 is used, the brightness of the surface directed toward the level crossing passer is visually reduced, and light and darkness can be produced in the spherical lens. The light emitting area is substantially reduced.

  The railroad crossing warning light according to the present invention has the advantage that the light emission area is increased and the light emission luminance is increased while maintaining the light emission power consumed by the multi-surface light emitter of the railroad crossing warning light described in the embodiment of Patent Document 3. Main features.

  According to the railroad crossing warning light according to the present invention, the light emission area of the railroad crossing warning light is substantially enlarged and the light emission brightness is improved, so that the visibility of the warning to the level crossing passer is improved and the safety of the railroad crossing is improved. Can contribute. Moreover, according to the present invention, it is possible to maintain the existing light emission power without increasing the light emission power in order to improve the light emission luminance, and the power necessary for blinking the warning light is within the electric capacity of the existing equipment. Therefore, existing peripheral devices can be diverted, and as a result, the installation cost can be reduced.

It is a partial cross section front view which shows one Example of the level crossing warning light of this invention. It is a top view which shows one Example of the level crossing warning light of this invention. It is an exploded view of a polyhedral light emitter. It is a figure which shows the state which attached each light emission surface of the trunk | drum light emission body, the trunk | drum extended light emission body, and the lower light emission body to the holder. It is a perspective view of a multi-surface light emitter. It shows the relationship between the globe and the back plate of the warning light according to the present invention, (a) is a bottom view, (b) is a front view, and (c) is the appearance of the back plate when the warning light is turned 30 °. FIG. It is a figure which shows the state of 1 Example which installed the warning light by this invention in the level crossing alarm. It is a perspective view of the multi-surface light-emitting body described in the Example of patent document 3. FIG.

  The purpose of increasing the light emitting area of the light emitting surface facing the direction of a pedestrian crossing without increasing the light emission power and improving the light emission brightness is from the corner of the triangular prism body light emitter and triangular prism body light emitter. This was realized by installing a combination of three types of light emitters, a trunk-extended light emitter arranged radially extending in three directions and a triangular pyramid lower light emitter, in a glove using a spherical lens.

  Embodiments of the present invention will be described below with reference to the drawings. 1 and 2, a railroad crossing warning light 7 according to the present invention is composed of a combination of a multi-surface light emitter 1 and a globe 2, and a back plate 10 projecting radially in three directions is partially formed on a peripheral surface of the globe 2. Is provided. The multi-surface light emitter 1 is a flashlight of an alarm device. The globe 2 is a device that wraps the multi-faced light emitter 1, and uses a red transparent or colorless transparent spherical lens, and is hollowed by a combination of three globe segments 2a divided into three at an angle of 120 ° as shown in FIG. It is composed of a sphere. The lens surface is preferably blasted or cut or both processed so that the shape of the multi-surface light emitter 1 is not visible from the outside.

  In FIG. 3, the multi-surface light emitter 1 includes a combination of a body light emitter 3, a body extended light emitter 4, and a lower light emitter 5, and each light emitter has a light emitting surface by a light emitting element. The body light emitter 3 is a triangular prism formed by combining three rectangular LED mounting boards arranged vertically in a regular triangle with a central angle of 60 °, and light emission that emits light toward the front on each of the three surfaces of the triangular prism. Surface 3a (body light-emitting surface) is formed.

  The body-extended light-emitting body 4 has a light-emitting surface 3a on one side of the body-part light-emitting body 3 sandwiched therebetween, and is disposed on both sides thereof at a fixed angle with respect to the light-emitting surface 3a of the body-part light-emitting body 3. Light-emitting surfaces 4a and 4a (body-extended light-emitting surfaces) that emit light in directions that form a certain angle with respect to the light-emitting surface of the body light-emitting body 3 are formed on both sides of each light-emitting surface 3a of the partial light-emitting body 3. is there. Specifically, the trunk-extended illuminant 4 is arranged radially in three directions at an angle of 120 ° with respect to each corner of the trunk illuminator 3 combined in a regular triangle. The light emitting surfaces 4 a and 4 a are formed at an angle of 150 ° on both sides of the light emitting surface of each surface of the body 3. In addition, the outer edge of each light emission surface 4a is formed in the circular-arc-shaped curved edge in the shape of the spherical shape of a glove.

  Since the body-extended light-emitting body 4 needs to form light-emitting surfaces on both sides, a double-sided mounting board with LEDs mounted on both sides of one board is usually used, or two boards with LEDs mounted on one side are used. It may be combined back to back.

  The lower light-emitting body 5 is connected to the lower side of the body-extended light-emitting body 4 and obliquely downwardly emits light emitting surfaces 5a (light emitting in the downward direction, respectively) below the three light-emitting surfaces of the body-extended light-emitting body. Specifically, three inverted trapezoidal LED mounting substrates are combined in an inverted triangular pyramid shape at an angle of 60 °, and the lower light emitting surface 3 is directed toward the center line of the body light emitter 3. The three light emitting surfaces 5a, 5a, 5a in the tilt direction are configured.

The combination of the body light emitter 3, the body extended light emitter 4, and the lower light emitter 5 is assembled to the holder 6 suspended from the flange 8 of the crossing warning light 7. The holder 6 is a vertically long rectangle having three flat surfaces 6a combined in a triangular prism, an inclined surface 6b extending on the lower side of each flat surface 6a, and an angle of 120 ° on both sides of each flat surface 6a. It has a projecting surface 6c that projects forward. Screw holes h ₁ , h ₂ , and h ₃ for mounting screws are provided in the plate surfaces of the flat surface 6a, the inclined surface 6b, and the overhanging surface 6c, respectively.

Barrel rectangular of the light-emitting surface 3a of the light-emitting body 3 are combined are respectively screwed into the screw hole h ₁ of the flat surface 6a of the three sides of the holder 6 in triangular prism shape, each of the light emitting surface 5a of the lower emitters 5 , combined are respectively screwed into the screw hole h ₂ of the third surface inclined face 6b and the inverted triangular pyramid shape. Further, the light emitting surface 4a of the pair of barrel extension luminous body 4, 4a is projecting surface 6c are screwed into the screw hole h ₃ of each light-emitting surface 3a of the body portion luminous body 3 at an angle of the center angle 120 ° Are arranged in the radial direction on both sides.

  Although details are not shown in detail, the flange 8 is a combination of a flange member divided into three at an angle of 120 ° in the radial direction, and each flange member has a flat surface 6a on one surface of the holder 6 and a flange surface. In addition, an inclined surface 6b is provided on the lower edge, and an overhanging surface 6c is provided on one side. As a result, by combining three flange members in a disc shape, the three flat surfaces 6a are triangular as shown in FIG. It is assembled in a columnar shape, three inclined surfaces 6b are formed thereunder, and overhanging surfaces 6c are arranged on both sides of each flat surface 6a. 4 shows the relationship among the body light emitter 3, the body extended light emitter 4, and the lower light emitter 5 attached to the holder 6. FIG. 5 shows the body light emitter 3, the body extended light emitter 4, and the lower light emission. The shape of the multi-surface light emitter 1 assembled with the body 5 is shown.

The assembled multi-surface light emitter 1 includes a body light emitter 3, a body extended light emitter 4, and a lower light emitter 5. Z ₁ , Z ₂ , and Z ₃ are divided (see FIG. 2). Within each of the compartments, there is a light emitting surface 3a (body light emitting surface) on one surface of the body light emitter, and body extended light emitters on both sides thereof. The light emitting surfaces 4a and 4a (body extended light emitting surface) of the above and the lower light emission sandwiched between the light emitting surfaces 4a and 4a of the body extended light emitting bodies 4 on both sides as clearly shown in FIG. A body-extended trapezoidal light-emitting surface 5a, a rectangular light-emitting surface 3a of a body light-emitting body 3 included in each section, and a body-extended light-emitting body having arcuate outer edges disposed on both sides thereof By combining the two light emitting surfaces 4a and 4a with the inverted trapezoidal light emitting surface 5a of the lower light emitter 5, the light emitting region of each section is A light-emitting surface that looks circular through the lobe is formed.

  The back plate 10 is for preventing the influence of external light rays on the multi-surface light emitter 1. As shown in FIG. 1, the back plate 10 is projected from the outer periphery of the globe 2 in three radial directions at every central angle of 120 ° on the extension of the body-extended light-emitting body 4 that forms an isolated section. . As shown in FIG. 1, the inner edge of the back plate 10 is provided with a curved edge that represents the cross-sectional shape of the globe 2, and the mounting seats 11 of the globe segment 2a are fixed to both sides of the inner edge.

  The globe 2 is assembled by a combination of three shell-like globe segments 2a divided into three equal parts in the circumferential direction at 120 ° central angles. When assembling, the segments 2a are inserted between the back plates 10 and 10 positioned at both ends of each light emitting region section, and the flanges at both ends of each segment 2a are screwed to the mounting seat 11 of the back plate 10 to secure each segment. By assembling 2a between the adjacent back plates 10, 10, a hollow sphere is assembled.

  The globe 2 and the back plate 10 are assembled to the multi-surface light emitter 1, and the flange 8 is fixed to the top plate 9 to which the lamp receiver 13 is attached as shown in FIG. As shown, the rails are suspended from brackets 12 protruding from the alarm column 15 of the railroad crossing alarm 14. As shown in FIG. 6 (a), the back plate 10 protrudes from the outer periphery of the globe 2 in three radial directions at every central angle of 120 °. When the warning light 7 is viewed from the front, the back plate 10 is shown in FIG. 6 (b). As shown, the globe 2 is surrounded by the back plates 10 and 10, and the shape of the globe viewed from the front is circular.

  FIG. 6C shows a shape when viewed from a direction rotated from the front by a certain angle (for example, 30 °). At this time, the back plate on one side runs along the outer edge of the globe 2 and the back plate on the other side appears in a direction longitudinally across the spherical surface of the globe, but the shape of the globe changes slightly from a circle due to the central angle of 120 °. Is small and is recognized as substantially circular.

  The luminance value of the multi-surface light emitter incorporated in the warning light of the present invention was measured. For comparison, the brightness value was measured using the polyhedral light emitter described in the example of Patent Document 1 as Comparative Example 1. As shown in FIG. 8, Comparative Example 1 is a multi-faceted light emitter having a three-dimensional structure of 27 faces composed of a nine-cornered columnar light emitter and a nine-cornered cone-shaped light emitter combined above and below the nine-cornered columnar light emitter. On the other hand, the present invention is a 12-sided multi-faced light emitter formed by a combination of a triangular columnar body light emitter, a 6-side body extended light emitter, and a triangular pyramid lower light emitter.

  The polyhedral light emitter described in the example of Patent Document 1 under the same conditions as the number, voltage value, and current value of the LEDs used was measured for luminance values with Comparative Example 1, and the Example of Patent Document 1 was measured. The multi-surface light emitter described in 1 improved in luminance by about 20% as compared with Comparative Example 1.

  As described above, according to the present invention, since the light emitting surface facing upward which is not necessary for pedestrians is eliminated and concentrated on the front and both sides of the three warning lights, the luminance is larger and brighter. In addition, both sides of the body light-emitting surface are combined with a side light-emitting surface that is shaped like an arcuate curved surface in the shape of a spherical globe, and each light-emitting area has a nearly circular shape and emits uniformly. Can be made.

  Further, according to the present invention, since the globe 2 is divided into the three segments 2a, 2a, 2a, the globe 2 can be assembled into a spherical hollow body by combining the segments. The parts can be replaced, and when the multi-surface light emitter is inspected and repaired, it is only necessary to remove the segment of the light emitting area that needs to be inspected and repaired. The operation can be easily performed, and only a part of the segments can be easily replaced.

  According to the present invention, the light emitting area is expanded as a substantially omnidirectional railroad crossing warning light for level crossing pedestrians and vehicles, and the light emission luminance is increased to improve the visibility to pedestrians. Can contribute to the improvement of performance.

DESCRIPTION OF SYMBOLS 1 Multi-surface light-emitting body, 2 globe, 2a glove segment, 3 trunk | drum light-emitting body, 3a trunk | drum light emission surface 4 trunk | drum expansion light-emitting body, 4a trunk | drum expansion light-emitting surface, 5 lower light-emitting body, 5a lower light-emitting surface, 6 holder, 6a flat surface, 6b inclined surface, 6c overhanging surface, 7 level crossing warning light, 8 flange, 9 top plate, 10 back plate, 11 mounting seat, 12 bracket, 13 light catcher, 14 level crossing alarm, 15 alarm column, Z ₁ , Z ₂ , Z ₃ light emitting region, h ₁ , h ₂ , h ₃ screw holes

Claims (6)

A railroad crossing warning light in which a multi-faced light emitter having a combination of a body light emitter, a body extended light emitter, and a lower light emitter is installed in a glove of a hollow sphere using a spherical lens,
Each light emitter has a light emitting surface by a light emitting element,
The body light emitter has a light emitting surface that emits light toward each front surface of the three surfaces of the triangular prism installed in the vertical direction,
The trunk-extended illuminator is arranged extending radially in three directions from each corner of the triangular prism of the trunk illuminator, and emits light in a direction that forms a fixed angle with respect to each light emitting surface of the trunk illuminator. It has a light emitting surface on both sides, which form the light-emitting surface on both sides of the light emission surface of the body emitters,
The lower light emitter has a three-surface light emitting surface that emits light in a downward direction below each light emitting surface of the triangular prism of the trunk extended light emitter. The body light emitter is a combination of three light emitting surfaces in a triangular prism,
The trunk-extended illuminator is arranged radially in three directions,
The railroad crossing warning light according to claim 1, wherein the lower light emitter has three light emitting surfaces combined with an inverted triangular pyramid. The triangular prism of the body light emitter is a combination of three rectangular light emitting surfaces at an angle of 60 °,
The trunk extension illuminator is arranged radially from each corner of the triangular prism of the trunk illuminator at a central angle of 120 °, and is 150 ° with respect to the light emitting surface of each surface of the trunk illuminator. The light emitting surface is formed at an angle,
The lower light emitter is formed by combining inverted trapezoidal light emitting surfaces with a triangular pyramid at an angle of 60 ° to form three light emitting surfaces facing downward toward the center line of the body light emitter. The level crossing warning light according to claim 1.   The multi-faced light emitter is divided into three sections with a combination of one light emitting surface of the body light emitter, two light emitting surfaces of the body extended light emitter, and one light emitting surface of the lower light emitter as one section. The railroad crossing warning light according to claim 1, wherein a light emitting area partitioned into two is formed in the globe, and the light emitting areas of each section are isolated from each other.   In each section, the body light emitter is configured by combining light emitting surfaces into a regular triangle having a central angle of 60 °, and the two light emitting surfaces of the body extended light emitter are formed of the body light emitter. The railroad crossing warning light according to claim 3, wherein the crossing warning light is disposed at an angle of 150 ° with respect to one light emitting surface. The globe is separated into three segments corresponding to the sections of the multi-surface light emitter,
2. The level crossing warning light according to claim 1, wherein each segment is detachably attached to a back plate provided for the level crossing warning light and is combined with a hollow sphere glove.

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