Display machine, signal machine

Abstract

To provide a display machine and a traffic light capable of efficiently suppressing a growth of snow accretion.SOLUTION: A plurality of light source arranging units 3 are arranged substantially parallel to each other at a predetermined interval. A rotation shaft 15 is arranged horizontally behind a display machine 1 (light source arranging unit 3) so as to be orthogonal to a longitudinal direction of the light source arranging unit 3. A plurality of scraping members 17 are fixed to the rotation shaft 15. The rotation shaft 15 may be rotated by a drive unit 21. When the rotation shaft 15 is rotated by the drive unit 21, the scraping members 17 rotate together with the rotation shaft 15. At this time, a removing target object 23 (foreign matters such as snow and dead leaves or the like) existing in a gap 19 between adjacent light source arranging units 3 is scraped out and removed by the scraping members 17.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an indicator, such as a traffic signal, capable of preventing snow from accumulating, particularly in snowy regions. [Background technology]

[0002] In recent years, with the change in the global environment, damage caused by heavy snowfalls in strong winds in winter has become a problem. Heavy snowfall not only creates obstacles to road traffic, but also causes snow to accumulate on traffic signal lamps and other equipment due to blizzards, blocking the light emitted by the traffic signal colors, making the traffic signal invisible. For this reason, measures to prevent snow accumulation on indicators such as traffic signals are desired.

[0003] One method of preventing snow accumulation is to provide a hood or cover to cover the traffic light (see, for example, Patent Document 1 and Patent Document 2).

[0004] There is also a method of melting snow using a heating element (eg, Patent Document 3 and Patent Document 4).

[0005] However, while methods such as those described in Patent Documents 1 and 2 that provide large hoods or the like may make it more difficult for snow to accumulate, once snow does accumulate, the area where it has accumulated will continue to grow, impairing the visibility of the traffic light.

[0006] Furthermore, when infrared rays are used as a heat source as in Patent Document 3, electrical energy is converted into light, which results in poor efficiency in conversion and absorption, and the difficulty of requiring an extremely large amount of electrical energy to generate sufficient heat to remove snow from the light-emitting surface.

[0007] Furthermore, Patent Document 4 provides a cover to form a dark portion that absorbs light, which is a heat source, and generates heat. However, this has problems in that it is inefficient when using light as an energy transmission means, and covering the traffic light with such a material impedes visibility under normal circumstances.

[0008] In response to this, a display has been proposed in which multiple light source arrangement sections are arranged at a predetermined interval so that wind and snow from the front can pass through the gaps between adjacent light source arrangement sections to the rear (Patent Document 5). [Prior art documents] [Patent documents]

[0009] [Patent Document 1] JP 2008-305025 A [Patent Document 2] Publication No. 2009-190554 [Patent Document 3] Utility Model Registration No. 3161877 [Patent Document 4] JP 2012-108861 A [Patent Document 5] Patent Publication No. 2021-26658 Summary of the Invention [Problem to be solved by the invention]

[0010] According to Patent Document 5, snow blown from the front passes through the gaps between adjacent light source arrangement sections to the rear, so by appropriately setting the gaps between the light source arrangement sections, it is possible to prevent snow from accumulating on the front of the light source arrangement sections. However, the form of snow accumulation changes depending on various factors such as the strength and direction of the wind, the size and moisture content of the snowflakes, etc. Therefore, in order to completely prevent snow accumulation under all conditions, it is necessary to make the intervals between the light source arrangement sections excessively wide, but in this case, visibility during normal times will also decrease.

[0011] In response to this, the inventors focused on the fact that when snow fills up part of the gap between adjacent light source installation parts, snow accretion grows from this part as a base point. In other words, if the gap between adjacent light source installation parts is sufficient, snow accretion can be suppressed, but if snow fills up part of the gap for some reason, snow accretion will grow from this part as a base point, and there is a risk of the snow accretion area expanding.

[0012] The present invention has been made in consideration of such problems, and has an object to provide a display and a traffic light that can more efficiently suppress the growth of snow accretion. [Means for solving the problem]

[0013] In order to achieve the above-mentioned object, the first invention is a display device comprising a light source arrangement section having a light source arranged side by side, a connecting section connecting a plurality of the light source arrangement sections at a predetermined interval, a scraping member removing blockages in the gaps between adjacent light source arrangement sections, and a drive section moving the scraping member in the gaps between adjacent light source arrangement sections, wherein wind and snow from the front can pass through the gaps between adjacent light source arrangement sections to the rear, and the drive section can operate the scraping member to remove objects to be removed in the gaps between adjacent light source arrangement sections.

[0014] A rotating shaft to which multiple scraping members are fixed may be provided behind the light source arrangement section, and the drive section may be capable of rotating each of the scraping members along the gaps between adjacent light source arrangement sections by rotating the rotating shaft.

[0015] When stopping the scraping operation, it is desirable that the drive section stops the rotation shaft at a position where the scraping member has retreated rearward from the gap between the adjacent light source mounting sections.

[0016] A plurality of the rotation shafts may be arranged, and the scraping members fixed to the respective rotation shafts may be capable of removing the object to be removed from different portions of the light source arrangement section.

[0017] The drive section may reciprocate a fixed member to which the plurality of scraping members are fixed along gaps between adjacent light source arrangement sections.

[0018] It is desirable that the scraping member be made of an elastic member that is elastically deformable due to resistance against the object to be removed.

[0019] The multiple light source arrangement sections may be arranged horizontally, and the scraping member may be capable of removing icicles or water droplets adhering between adjacent light source arrangement sections and below the display unit.

[0020] According to the first aspect of the present invention, gaps are formed between adjacent light source arrangement parts, and wind can pass through these gaps, so that stagnation of the wind flow in front of the light source arrangement parts is suppressed, and snow accumulation on the front surface of the light source arrangement parts can be suppressed. In this case, even if snow accumulates in the gaps for some reason, the scraping member can be operated as an auxiliary to remove the blockage in the gaps between adjacent light source arrangement parts, so that the gaps are not filled and the growth of snow accumulation can be suppressed.

[0021] Furthermore, by rotating the scraping member, clogging of the gaps between adjacent light source installation sections can be removed with a simple structure.

[0022] In this case, when the rotation of the scraping member is stopped, the scraping member is prevented from protruding forward from the gap between adjacent light source arrangement sections, so that the gap is not blocked by the scraping member and snow accumulation on the scraping member itself can be suppressed.

[0023] Furthermore, by rotating the scraping member on a plurality of rotating shafts, scraping can be performed over the entire range even if the length of the scraping member is shortened.

[0024] The same effect can be obtained by moving the scraping member back and forth instead of rotating it.

[0025] Furthermore, by forming the scraping portion from an elastic member that is capable of elastic deformation, even if the resistance of the object to be removed is large, the rotation and reciprocating motion are not stopped, and the removal operation can be continued.

[0026] Furthermore, when multiple light source mounting sections are arranged in a horizontal direction, the generation and growth of icicles can be suppressed by using a scraping member to remove icicles or water droplets adhering to the bottom of the display unit.

[0027] The second invention is a traffic light using a display device according to the first invention, characterized in that in a plurality of the light source arrangement sections arranged in an approximately rectangular shape, the light sources are arranged so as to form an approximately circular shape when viewed from the front.

[0028] According to the second invention, a traffic light with excellent visibility can be obtained. In this case, a panel that blocks light from the circular part of the traffic light is not used, and the light source is arranged so that the light-emitting part of the traffic light is made substantially circular, so that the flow of wind is not obstructed. Effect of the Invention

[0029] According to the present invention, it is possible to provide a display device and a traffic light capable of efficiently suppressing the growth of snow accretion. [Brief description of the drawings]

[0030] [Figure 1] FIG. 4A is a front view showing the display unit 1, and FIG. 4B is a cross-sectional view showing the display unit 1, taken along line BB in FIG. [Diagram 2] 6(a) to 6(c) are diagrams showing the operation of the scraping member 17. [Diagram 3] 6(a) to 6(c) are diagrams showing the operation of the scraping member 17. [Figure 4] FIG. 2 is a diagram showing a display device 1a in which a plurality of rotation shafts 15 are arranged. [Diagram 5] 13(a) to 13(c) are rear views showing the operation of the scraping member 17 in the display unit 1b. [Figure 6] 11(a) to 11(c) are cross-sectional views showing the operation of a scraping member 17 in a display unit 1b. [Figure 7] FIG. 1A is a diagram showing a display unit 1c, and FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0031] Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1(a) is a front view of a display device 1, and FIG. 1(b) is a cross-sectional view of the display device 1 taken along line BB in FIG. 1(a). In the illustrated example, rear light-shielding members and the like are omitted. In the following description, an example in which the display device 1 is a traffic signal with three devices lined up horizontally will be described, but the display device 1 of the present invention may be vertically linked or may be a double traffic signal. In addition to traffic signals, the display device 1 can also be used as a display device that displays traffic information, warnings, signs, and other information.

[0032] The display 1 is mainly composed of a light source arrangement section 3, a light source 5, a frame section 7, a scraping member 17, etc. In the light source arrangement section 3, a plurality of light sources 5 are arranged in the longitudinal direction. The light sources 5 are, for example, LED light sources. In the illustrated example, the light sources 5 are arranged in a row in each light source arrangement section 3, but they may be arranged in two or more rows. However, since the amount of snow that may accumulate increases if the width of the light source arrangement section 3 is wide, it is preferable that the width of the light source arrangement section 3 is narrow.

[0033] The light source arrangement sections 3 are arranged substantially parallel to each other at a predetermined interval. In the illustrated example, the light source arrangement sections 3 are arranged in a vertical lattice pattern. The frame section 7 serves as a connecting section that supports the light source arrangement sections 3 at least at the upper and lower parts of the light source arrangement sections 3. In this manner, a gap is formed between the adjacent light source arrangement sections 3, so that wind from the front can pass through the gap between the adjacent light source arrangement sections 3 to the rear. Note that forming a gap between the adjacent light source arrangement sections 3 means that there is an intentional space between the adjacent light source arrangement sections 3 through which wind can pass.

[0034] A plurality of light sources 5 are arranged in each light source arrangement section 3. Since the light source arrangement sections 3 are of approximately the same length and arranged at a predetermined interval, the light emitting area in which the light sources 5 can be installed is approximately rectangular. In the plurality of light source arrangement sections 3 arranged in such an approximately rectangular shape, the light sources 5 are arranged so as to form an approximately circular shape when viewed from the front (A in the figure). In this way, light is emitted in an approximately circular shape, which can be recognized as circular light.

[0035] It should be noted that there is also a method of covering the area other than the circular light-emitting area with a shielding plate or the like, but in this case, the gap between adjacent light source arrangement sections 3 is filled with the shielding plate. As a result, the shielding plate prevents the flow of fluid (wind) between adjacent light source arrangement sections 3. For this reason, it is preferable to form a substantially circular light-emitting area by arranging the light sources 5 in the light source arrangement section 3, rather than blocking a portion of the light source arrangement section 3.

[0036] 1(b), a transparent cover 9 for protecting the light source 5 is disposed on the light emitting surface side of the light source 5 in the light source mounting section 3. It is preferable that the transparent cover 9 has a gently convex shape facing forward in a cross section perpendicular to the longitudinal direction of the light source mounting section 3.

[0037] As in Patent Document 5, in this embodiment, multiple light source arrangement sections 3 are installed relative to the light emitting surface, and gaps are formed between adjacent light source arrangement sections 3. Therefore, the width of each light source arrangement section 3 is small compared to the entire light emitting surface, and the snow accumulation range is narrow. In addition, by making the front of the transparent cover 9 into a gently convex shape, the wind flows gently (without forming large turbulence) toward the rear of the light source arrangement section 3. Therefore, the stagnation point area can be made small. As a result, even if a small amount of snow accumulates near the stagnation point of the light source arrangement section 3, snowflakes flowing with the wind will then flow backward with the wind, and the snow accumulation can be prevented from growing large.

[0038] A rotating shaft 15 is arranged horizontally behind the display device 1 (light source arrangement section 3) so as to be perpendicular to the longitudinal direction of the light source arrangement section 3. For example, both ends of the rotating shaft 15 are fixed to the frame section 7 via bearings or the like. A plurality of scraping members 17 are fixed to the rotating shaft 15. The scraping members 17 are arranged at positions corresponding to the gaps between adjacent light source arrangement sections 3.

[0039] In addition, under normal conditions, a gap is formed between the scraping member 17 and the light source installation section 3. In other words, the scraping member 17 (rotating shaft 15) is disposed at a certain distance behind the light source installation section 3 so that the scraping member 17 does not block the gap 19 between the adjacent light source installation sections 3 and does not significantly impede the passage of wind and snow to the rear.

[0040] The rotating shaft 15 can be rotated by the driving unit 21. The driving unit 21 is fixed to the frame 7, and can transmit a rotational force to the rotating shaft 15 by a belt. The arrangement of the driving unit 21 and the power transmission structure from the driving unit 21 to the rotating shaft 15 are not limited to the structure shown in the figure. By rotating the rotating shaft 15 by the driving unit 21, it is possible to rotate and move each scraping member 17 along the gap between adjacent light source arrangement parts 3. At this time, if there is some kind of clogging between adjacent light source arrangement parts 3, the clogging of the gap between adjacent light source arrangement parts 3 can be removed by the rotation and movement of the scraping member 17.

[0041] Next, the operation of scraping member 17 will be described in detail. Figures 2(a) to 2(c) are diagrams showing the operation of scraping member 17 (the rotational operation of rotating shaft 15). Note that illustration of drive unit 21, bearings of rotating shaft 15, etc. is omitted.

[0042] In the illustrated example, the rotating shaft 15 is disposed approximately at the center in the height direction of the display unit 1, and the scraping members 17 are disposed in opposite directions (up and down directions in the figure) relative to the rotating shaft 15. That is, each scraping member 17 is approximately half the length of the light source arrangement portion 3.

[0043] When the rotating shaft 15 is rotated by the driving unit 21 from the state shown in Fig. 2(a), as shown in Fig. 2(b) and Fig. 2(c), the scraping member 17 rotates together with the rotating shaft 15 (in the direction of D in the figure). At this time, the removal target 23 (foreign matter such as snow or dead leaves) present in the gap 19 between the adjacent light source installation parts 3 is scraped out and removed by the scraping member 17.

[0044] The rotation direction of the rotary shaft 15 is set so that the scraping member 17 rotates from above toward below (counterclockwise in the drawing) in the gap 19. In this way, the object to be removed 23 can be efficiently scraped out toward the bottom of the display device 1 and removed.

[0045] The driving unit 21 may rotate the rotating shaft 15 all the time, or may operate intermittently. For example, it may operate only at a predetermined time during the night or day by a timer, or may operate under predetermined conditions by detecting the temperature or weather with a sensor or the like. Also, a sensor may detect the presence of a foreign object in the gap between adjacent light source installation units 3. Also, when there is an administrator, such as at a toll booth signal on a highway or the like, the driving unit 21 may be operated manually.

[0046] It is preferable to provide a position sensor capable of detecting the rotational position of the rotating shaft 15, and to always stop the rotating shaft at a fixed position when the driving unit 21 stops. For example, as shown in FIG. 2(a), when the driving unit 21 stops the rotation of the scraping member 17, the rotating shaft 15 is stopped at a position where the scraping member 17 retreats rearward from the gap between the adjacent light source arrangement units 3 (a position where the scraping member 17 faces vertically in the figure). In this way, the scraping member 17 does not stop in a state protruding forward of the light source arrangement unit 3, does not impede visibility, and can suppress snow accumulation on the scraping member 17 itself.

[0047] 3(a) to 3(c) are similar views showing the operation of the scraping member 17, but show cases in which the object to be removed 23 cannot be scraped out of the gap 19 in the light source installation section 3. For example, these are cases in which the object to be removed 23 is stuck in a gap in the light source installation section 3 or is frozen to the light source installation section 3.

[0048] In such a case, if the scraping member 17 has a high rigidity, the scraping member 17 will get caught by the object to be removed 23, making it impossible for the scraping member 17 to rotate any further. Therefore, the effect of the scraping member 17 cannot be obtained.

[0049] In contrast, in this embodiment, the scraping member 17 is made of an elastic member that can be elastically deformed by resistance to the removal target 23. Therefore, even if the removal target 23 does not move, the scraping member 17 can continue to rotate. In this way, for example, the removal target 23 can be scraped out while being scraped off little by little, and it is also possible to remove the removal target 23 little by little by repeated force. Furthermore, since the rotation is continued, it is possible to at least suppress any further growth of the removal target 23. Note that, for example, a soft resin or the like can be applied as the scraping member 17.

[0050] As described above, according to this embodiment, the structure allows wind and snow to blow through between adjacent light source installation sections 3 where the light sources 5 are arranged, so that the dynamic pressure from the wind blowing in front of the light source installation section 3 can be significantly reduced. This makes it possible to significantly reduce snow accumulation on the light emitting surface of the light source installation section 3. Furthermore, even if snow accumulates in the gap between adjacent light source installation sections 3, the removal target 23 can be easily removed by operating the scraping member 17 as an auxiliary.

[0051] Furthermore, since scraping member 17 is made of a flexible elastic material, the rotation of scraping member 17 can be continued without being stopped by the resistance of object 23 to be removed.

[0052] In addition, when the rotation is stopped, the scraping member 17 stops in a state where it is retracted to the rear of the light source arrangement part 3, so the scraping member 17 does not stop in a state where it protrudes forward of the display unit 1. Therefore, the scraping member 17 does not reduce visibility, and the accumulation of snow on the scraping member 17 can be suppressed.

[0053] Next, a second embodiment will be described. Fig. 4 is a diagram showing a display device 1a according to the second embodiment. In the following description, components having the same functions as those in the first embodiment are denoted by the same reference numerals as those in Figs. 1 to 3, and duplicated descriptions will be omitted.

[0054] The second embodiment has a configuration similar to that of the first embodiment, but differs in that a plurality of rotation shafts 15 are arranged. In this embodiment, three rotation shafts 15 are arranged substantially parallel to each other. That is, the length of each scraping member 17 is approximately 1 / 6 of the length of the light source arrangement section 3. That is, the length of each scraping member 17 can be shortened.

[0055] When the rotating shaft 15 is rotated, the scraping members 17 fixed to the respective rotating shafts 15 can remove the removal target 23 (not shown) from different parts of the light source arrangement portion 3. In other words, by using a plurality of rotating shafts 15 and dividing the scraping members 17, even a short scraping member 17 can remove the removal target 23 from the entire surface of the display unit 1a.

[0056] The display unit 1a has the light blocking members 13 arranged in multiple stages. As described above, a gap is formed between adjacent light source arrangement sections 3, so that the scenery behind the display unit and sunlight from behind can be seen from the front of the display unit. This may hinder the visibility of the light emitting section in front of the display unit. In response to this, by arranging the light blocking members 13, light from behind the display unit 1a is blocked, and the visibility of the light of each light source 5 of the light source arrangement section 3 can be improved.

[0057] In addition, the light blocking members 13 are arranged with gaps between them, so that the wind passing between the adjacent light source arrangements 3 can flow directly to the rear of the display unit 1a. Therefore, even if the light from the rear is blocked, the flow of the wind is not impeded. Therefore, snow accumulation on the front surface of the light source arrangements 3 can be suppressed.

[0058] Even when such a light blocking member 13 is arranged, by shortening the length of the scraping member 17, the scraping member 17 and the light blocking member 13 do not interfere with each other, and the display device 1a can be made smaller.

[0059] When multiple rotating shafts 15 are arranged, it is desirable to provide an odd number of rotating shafts 15 so that the removal target 23 located approximately in the center of the display unit 1a can be efficiently removed. In this way, at least one rotating shaft 15 can be arranged approximately in the center of the display unit 1a in the height direction.

[0060] According to the second embodiment, it is possible to obtain the same effects as those of the first embodiment. In addition, by disposing a plurality of rotating shafts 15 and dividing and disposing scraping members 17, it is possible to shorten the length of each scraping member 17.

[0061] Next, a third embodiment will be described. Figures 5(a) to 5(c) are rear views showing the operation of a display device 1b, and Figures 6(a) to 6(c) are cross-sectional views in each process. The display device 1b has a structure similar to that of the display device 1, but differs in that a fixing member 27 and the like are used instead of the rotating shaft 15.

[0062] A drive unit 21a is fixed to the back surface of the display unit 1b by a mounting portion 29. The mounting portion 29 is disposed so as to straddle the top and bottom of the display unit 1b. A link 33 is attached to the drive unit 21a. The link 33 has a long hole 35 formed along the longitudinal direction.

[0063] A guide 25 is provided in the up-down direction on each side of the display unit 1b. A fixing member 27 is disposed so as to straddle both guides 25. The fixing member 27 is movable up and down along the guides 25.

[0064] A pin 31 is provided at the rear of the fixed member 27. The pin fits into an elongated hole 35 of the link 33. In this state, when the driving unit 21a is operated, the link 33 rotates as shown in Figures 5(a) to 5(c). At this time, since the pin 31 of the fixed member 27 fits into the elongated hole 35 of the link 33, the fixed member 27 moves from above to below in response to the rotation of the link 33.

[0065] The driving unit 21a is capable of reciprocating the link 33 within a predetermined rotation range. That is, when the driving unit 21a rotates the link 33 by a predetermined angle, the driving unit 21a reverses the direction of rotation and rotates the link 33 in the reverse direction. The driving unit 21a repeats this operation. That is, with the rotation of the link 33, the fixed member 27 repeats reciprocating movement up and down from FIG. 5(a) → FIG. 5(b) → FIG. 5(c) → FIG. 5(b) → FIG. 5(a).

[0066] The scraping members 17 are fixed to the front side of the fixed member 27. The scraping members 17 are disposed at positions corresponding to the gaps 19 between adjacent light source arrangement sections 3, and portions of the scraping members 17 are inserted into the gaps 19. In this manner, the drive section 21a can reciprocate the multiple scraping members 17 fixed to the fixed member 27 along the gaps 19 between adjacent light source arrangement sections 3.

[0067] As shown in Fig. 6(a) to Fig. 6(c), when a removal target 23 exists between adjacent light source arrangement parts 3, the removal target 23 in the gap 19 can be removed by moving the scraping member 17 from above to below along the gap 19. Note that, like the driving unit 21, the driving unit 21a may be operated constantly or under predetermined conditions. When the operation of the driving unit 21a is stopped by a sensor or the like, the driving unit 21a stops with the fixing member 27 positioned at the upper end. That is, the state in which the fixing member 27 is positioned at the upper end is the standby state.

[0068] As described above, according to the third embodiment, it is possible to obtain the same effects as those of the first embodiment. In this manner, the operation of the scraping member 17 is not limited to a rotational operation, and the manner of the operation is not particularly limited as long as the scraping member 17 can move along the gap 19 between the adjacent light source arrangement portions 3, such as a reciprocating operation.

[0069] Next, a fourth embodiment will be described. Fig. 7(a) is a front view showing a display device 1c. The display device 1c has a structure similar to that of the display device 1, but the arrangement direction of the light source arrangement section 3 is different. In the display device 1c, the light source arrangement sections 3 are arranged in a horizontal grid pattern in the horizontal direction.

[0070] For this reason, the rotating shafts 15 are disposed in the vertical direction so as to be perpendicular to the light source arrangement sections 3. In the illustrated example, three rotating shafts 15 are disposed, and a scraping member 17 is fixed to each rotating shaft 15. For this reason, when the rotating shafts 15 are rotated, the scraping member 17 rotates and moves along the gap between adjacent light source arrangement sections 3, and can remove the object to be removed 23 (not shown) in the gap 19.

[0071] In addition, in the display unit 1c, the rotating shaft 15 protrudes downward from the display unit 1c. A scraping member 17 is also fixed near the lower end of the rotating shaft 15. That is, the lowest scraping member 17 is disposed below the display unit 1c (frame portion 7) rather than in the gap 19 between the adjacent light source arrangement portions 3.

[0072] Rainwater or melted snow may flow and form droplets that adhere to the bottom of the display unit 1c (bottom of the frame portion 7). These droplets solidify and become icicles at low temperatures, such as at night. In the display unit 1c, the scraping members 17 are disposed not only between adjacent light source installation portions 3 but also below the display unit 1c, so that the scraping members 17 can remove icicles or water droplets that adhere to the bottom of the display unit 1c.

[0073] 7(b) is a diagram showing a display device 1d. The display device 1d is substantially the same as the display device 1b, but the light source arrangement sections 3 are arranged in a horizontal lattice pattern, and the fixing members 27 are arranged in a vertical direction so as to be perpendicular to the light source arrangement sections 3. In the illustrated example, three fixing members 27 are arranged, and the scraping member 17 is fixed to each fixing member 27. Therefore, when the fixing members 27 are reciprocated, the scraping member 17 moves reciprocally in the horizontal direction along the gap between the adjacent light source arrangement sections 3, and can remove the removal target 23 (not shown) in the gap 19.

[0074] Similarly to the display unit 1c, the display unit 1d also has a fixing member 27 that protrudes below the display unit 1d. A scraping member 17 is also fixed near the bottom end of the fixing member 27. That is, the lowest scraping member 17 is disposed below the display unit 1b (frame portion 7) rather than in the gap 19 between adjacent light source arrangement parts 3. In this way, in the display unit 1d, the scraping member 17 is disposed not only between adjacent light source arrangement parts 3 but also below the display unit 1d, so that the scraping member 17 can remove icicles or water droplets that adhere to the bottom of the display unit 1d.

[0075] As described above, according to the fourth embodiment, it is possible to obtain the same effect as the first embodiment. In addition, by disposing the scraping member 17 also below the display unit, it is possible to remove water droplets and icicles that have formed below the display unit.

[0076] Although the embodiment of the present invention has been described above with reference to the attached drawings, the technical scope of the present invention is not limited to the above-described embodiment. It is clear that a person skilled in the art can think of various modifications or alterations within the scope of the technical ideas described in the claims, and it is understood that these also naturally belong to the technical scope of the present invention.

[0077] For example, it goes without saying that the above-described embodiments can be combined with each other. [Explanation of symbols]

[0078] 1, 1a, 1c, 1d……Display device 3……Light source installation part 5……Light source 7...Frame 9. Transparent cover 13... Light blocking member 15...Rotation axis 17....Scraping member 19. Gap 21, 21a...Drive unit 23....Item to be removed 25………Guide 27...Fixing member 29………Mounting section 31………Pin 33………Link 35………Oval hole

Claims

1. a light source arrangement section in which a light source is provided; a connecting portion that connects the plurality of light source arrangement portions at a predetermined interval; A scraping member for removing clogging in the gaps between adjacent light source arrangement portions; A drive unit that moves the scraping member in a gap between adjacent light source arrangement units; Equipped with This display is characterized in that wind and snow from the front can pass through the gap between adjacent light source arrangement sections to the rear, and the drive section can operate the scraping member to remove objects to be removed from the gap between adjacent light source arrangement sections.

2. a rotation shaft to which the plurality of scraping members are fixed, the rotation shaft being located behind the light source arrangement section; The display device according to claim 1 , wherein the drive unit is capable of rotating the rotation shaft to rotate each of the scraping members along the gap between adjacent light source arrangement units.

3. The display device according to claim 2, characterized in that, when the drive unit stops the scraping operation, it stops the rotation shaft at a position where the scraping member is retreated rearward from the gap between adjacent light source mounting units.

4. The display device according to claim 2, characterized in that a plurality of the rotating shafts are arranged, and the scraping members fixed to the respective rotating shafts are capable of removing the object to be removed from different portions of the light source arrangement portion.

5. 2. The display device according to claim 1, wherein the drive unit is capable of reciprocating a fixed member to which the plurality of scraping members are fixed along the gaps between adjacent light source arrangement units.

6. 2. The display device according to claim 1, wherein the scraping member is made of an elastic member that is elastically deformable by resistance against the object to be removed.

7. The light source arrangement sections are arranged in a horizontal direction, 2. The display according to claim 1, wherein the scraping member is capable of removing icicles or water droplets adhering between adjacent light source arrangement portions and below the display.

8. A traffic signal using the display device according to any one of claims 1 to 7, A traffic light, characterized in that the light sources in the light source arrangement sections arranged in a substantially rectangular shape are arranged so as to form a substantially circular shape when viewed from the front.

Images