JP3395146B2 - Snowproof / snowmelt display device and snowproof / snowmelt display system - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to various roads, railroad tracks,
For more information about snow protection / snow melting type display means such as sidewalks,
Display means such as various signs, indicators, indicator boards, signboards, etc. that have a heat-insulating part that uses a laser, and are easily visible even at night or under conditions where the view is obstructed by heavy fog, heavy rain, snowstorm, etc. Means and means for a display system using the same.

[0002]

2. Description of the Related Art Various roads such as highways, national roads, prefectural roads, and sidewalks are provided with display means such as various signs. For example, traffic lights, guide signs to inform observers such as drivers and pedestrians of route numbers, road directions and distances, warning signs to notify road conditions such as intersections and railroad crossings that require caution in driving, and other There are various signs, direction indicators, indicator boards, and indicator boards. By visually recognizing such a sign or the like, the observer can confirm the direction of the road, know the road condition, and know what to do for safety.

Incidentally, since this type of display means such as a sign is well known, no reference is given to it.

By the way, in cold and snowy areas, signs, etc., which are installed, deployed, or buried in the open air,
In winter and extreme cold, there were problems such as snow accumulation, snow accretion, freezing and freezing on the signs themselves. That is, in a region with a large amount of snow or a large amount of snowstorm, there is a problem that the display portion of such a sign or the like is covered with snow and the display portion is difficult to be visually recognized. In addition, in such an area, snow accumulates on a sign or the like and grows into a mushroom-shaped mass. There was a problem that this lump eventually fell on the road or passage because it could not bear its own weight, and this snowfall intermittently occurred. This snowfall often occurs when a sign or the like warms up due to a rise in temperature during the daytime, and the snow that is in contact with the sign or the like melts. If this directly hits a car or a person, there is a risk of causing a serious accident.

On the other hand, in the above-mentioned conventional technique, various display means are mainly composed of paint coating. Such conventional display means by paint painting is bright,
When the visibility is good, the observer is informed of the contents of the display means to perform the function. However, the visibility at night is low, and there is a problem that the contents of the display means cannot be identified under the situation where the visibility of the observer is significantly obstructed by heavy fog, heavy rain, snowstorm, and the like. Further, when the display portion of the display means is covered with a shield such as snow, there is a problem that the display function is significantly deteriorated.

[0006]

Therefore, in order to solve the former problem, in a cold or snowy region, a sign is inclined or a roof is attached to prevent snow from accumulating, or a display portion or The roof has been coated with water-repellent paint to prevent snow accretion.

However, even if the sign is tilted or the roof is attached, there is no way to avoid the side-blown snowstorm, and it is impossible to avoid snowfall. In addition, it was not possible to prevent snow from accumulating on signs and roofs, and it did not solve the problem of snowfall. There is also a problem that snow is likely to occur due to the slope of the sign or the like and the roof formed at a steep angle. In addition, snow is prominently attached to the portion where the sign or the like is attached to the column, and similarly, there is a problem of snowfall due to this snowfall.

Further, when the water-repellent paint is applied, there is a problem that the water-repellent paint deteriorates with age. In addition, the water-repellent effect appears when the coating surface of the water-repellent paint is exposed on the surface, so dust, wild bird excrement, etc. adhere to the exposed coating surface, and signs etc. Is scratched, and the water repellent effect on that part is lost. Thus, there is even a problem that even snow accretion at the initial stage of application cannot be prevented. And on the sign and its roof,
Since snow accumulates around such a part where the water repellent effect has disappeared, the problem of snowfall eventually occurred. In particular, the exposed coating surface has a portion where the water-repellent effect remains, so that there is a problem in that a lump of snow is slippery and rather snow is likely to occur. In addition, similarly, snow accretion on a portion where a sign or the like is attached to a pillar is remarkable, and there is a problem of snowfall due to this snowfall.

On the other hand, regarding the visibility of the contents of the display means, in order to improve the visibility at night, there is a case where a light-up type is adopted in which the display portion of the display means is illuminated by illumination light such as a fluorescent lamp or a light bulb. is there. According to this method, the visibility of the display portion at night is improved. However,
The maintenance cost is very high because the electric power used to maintain the light from the illuminating light is huge. Furthermore, since there is a problem of the life of the illumination light itself, maintenance is complicated.

Further, in a situation where the field of view of an observer is obstructed by heavy fog, heavy rain, snowstorm, etc., the light of the illumination light causes the fog, rain and snow water surrounding the illumination light and the display portion of the display means. Etc. are illuminated. For this reason, it is difficult for the observer to visually recognize the display portion, since the user can only see the vaguely bright surroundings of the illumination light.

In some cases, an electronic bulletin board format is used that utilizes illumination light from a light emitting diode, a light bulb, or the like. Even in the case of this method, the visibility of the display portion at night is also improved. However, since the required enormous power to maintain the light from bulb etc., maintenance cost is very increased. Furthermore, the bulb itself life problems and, emitting diode
Since there is a problem such as the life of the battery, for example, color fading and deterioration , maintenance is complicated.

Further, in a situation where the observer's field of vision is obstructed by heavy fog, heavy rain, snowstorm, etc., the fog around the light emitting diode and the light bulb, rainwater and snow, etc. are illuminated. It was difficult to judge the contents of the display part because it was only possible to see how the display part was dimly brightened.

An object of the present invention is to solve the above-mentioned problems of the prior art, to provide a display means which can be used more safely in cold and snowy areas and has good visibility of the display portion. However, even if there is no concern about snow accretion, snowfall, or freezing, and even in the dark, when there is a cover such as snow or ice in the display area, or even when the visibility is poor. Even if there is, it is to provide a display means and a display system capable of confirming the contents of the display portion.

[0014]

DISCLOSURE OF THE INVENTION As a result of investigations for achieving the above-mentioned object, the present inventor has found that a member in which a plurality of optical fibers for irradiating a laser beam are connected, the laser beam causes thermal energy to be irradiated on the object to be irradiated. It has been found that it can be used as a heating / heat-retaining member due to its property of heating and heating. Further, it has been found that by providing such a heating / heat-retaining member in a display means such as a sign, it is possible to provide a snow-proof / snow-melting type display means free from problems of snow accretion, snowfall, freezing and freezing.

Further, since the present inventor uses a plurality of optical fibers connected to the laser light source as the means for supplying energy to the heating / heat-retaining member, rather than utilizing thermal energy due to electric resistance, the electric power consumption is extremely low. We have found that energy can supply the necessary heat energy.

Further, the present inventor embedded a plurality of optical fibers together with the above-mentioned optical fibers in the display portion of the display device so as to expose the light diffusion end according to a predetermined pattern, and transmitted the laser beam to the optical fibers. By the way, the light diffusing edge is emitted by this laser beam, and an optical display pattern formed by a plurality of light diffusing edges is generated in the display portion, so that it is possible to provide a display device that can be accurately viewed by an observer even in the dark. I found it.

Further, since a laser having excellent directivity is used instead of illumination light such as a fluorescent lamp, a light bulb, and a light emitting diode, even when there is a shield such as snow or ice in the display portion of the display device, When the laser beam is emitted from the light diffusing end, the snow and ice existing in the sharp path peculiar to the laser beam is colored, so that the snow and ice covering the optical display pattern are illuminated according to the optical display pattern and displayed. We found that the part can be clearly seen by the observer.

Further, the present inventor, when irradiating the laser beam from the light diffusion end, develops fog, rain / snow water, smoke, etc. existing in a sharp traveling path peculiar to the laser beam, which is a cause of obstructing the visibility. Therefore, it has been found that sharp light streaks can be generated on the optical display pattern in a situation in which the visual field is obstructed, thereby making it possible to notify the observer of the optical display pattern more clearly.

The present inventor has also found that it is economical to use an extremely small amount of electric power to form an optical display pattern by using a laser.
Furthermore, they have found that the use of an optical fiber that does not easily deteriorate over time eliminates the need for complicated operations such as replacement of light bulbs due to breakage, making maintenance easier.

That is, according to the first aspect of the present invention, there is provided a display section, a heat retaining section provided on the display section, a first laser oscillating device, and a second laser oscillating apparatus. Is connected to the first laser oscillation device via a plurality of first optical fibers, and the display unit is connected to the second laser oscillation device via a plurality of second optical fibers. The one end of the optical fiber is exposed on one surface of the display portion, and the one end forms a pattern on the one surface.

In the first aspect of the present invention, the display device may further include a support portion for supporting the display portion,
At least one of the display unit and the support unit may be provided with the heat retaining unit. Further, in the first aspect of the present invention, the first laser oscillation device and the second laser oscillation device may be the same. In the first aspect of the present invention, the first
It is preferable that the end portion of the optical fiber is embedded in the heat retaining portion.

Further, in the second aspect of the present invention, a plurality of display devices and an electricity supply device are provided, and the plurality of display devices are connected to the electricity supply device via electricity distribution wiring. In the system, the display device includes a display unit, a heat insulation unit provided in the display unit, a first laser oscillation device connected to the electric distribution line, and a second laser oscillation device connected to the electric distribution line. A laser oscillating device, wherein the heat-retaining unit is connected to the first laser oscillating device via a plurality of first optical fibers, and the display unit is a second laser device via a plurality of second optical fibers. A snow proof that is connected to a laser oscillation device, wherein one end of the second optical fiber is exposed on one surface of the display unit, and a pattern is formed on the one surface by the one end.
A snow melting display system is provided.

In the second aspect of the present invention, the display device may further include a support portion for supporting the display portion,
At least one of the display unit and the support unit may be provided with the heat retaining unit. Further, in the second aspect of the present invention, the first laser oscillation device and the second laser oscillation device may be the same. In the second aspect of the present invention, the first
It is preferable that the end portion of the optical fiber is embedded in the heat retaining portion.

According to a third aspect of the present invention, a plurality of display devices, a first laser oscillation device, and a second laser oscillation device are provided, and the plurality of display devices have a first optical fiber. In the display system, the display device is connected to the first laser oscillation device via a second optical fiber, and is connected to the second laser oscillation device via a second optical fiber. A heat insulating part provided in the heat insulating part, wherein the heat insulating part is connected to the first optical fiber, the display part is connected to the second optical fiber, and one end of the second optical fiber is the display part. There is provided a snow protection / snow melting type display system, which is exposed on one surface and has a pattern formed on the one surface by the one end.

In the third aspect of the present invention, the display device may further include a support portion for supporting the display portion,
At least one of the display unit and the support unit may be provided with the heat retaining unit. Further, in the second aspect of the present invention, the first laser oscillation device and the second laser oscillation device may be the same. In the second aspect of the present invention, the first
It is preferable that the end portion of the optical fiber is embedded in the heat retaining portion.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will now be described in detail with reference to the drawings of the embodiments. First, the snow protection / snow melting display device according to the first aspect will be described.

FIG. 1 (a) is a schematic front view showing an example of a snow-proof / snow melting type display device according to the first embodiment of the present invention, and FIG. 1 (b) is a side view of FIG. 1 (a). Is.

The display device 10 includes a display section 12 and a laser oscillator device 14. In the example of FIG. 1, the display device 10
Further has a support portion for supporting the display portion 12, and the support portion is an intermediate support tube 16 for fixedly supporting the display portion 12 from the back surface.
And a pillar 18 fixedly installed on the road surface and fixing one end of the intermediate support cylinder 16. In addition, a wind power generator 20 for supplying electricity to the laser oscillator 14 is installed above the column 18.

The display device according to the first aspect of the present invention is
As shown in FIG. 1, it may or may not have a supporting portion for supporting the display portion. Further, in the case of having a supporting portion, the supporting portion is a plurality of supporting members,
For example, as shown in FIG. 1, it may be composed of a pillar and an intermediate support cylinder provided laterally on the pillar, or may be composed of a single support member, for example, only the pillar.

As places for installing the display device according to the present invention, various roads and railroads, sidewalks such as shopping streets, plazas, parking lots, bridges, road surfaces such as runways, wall surfaces, sea surfaces such as sea routes, etc. Any place can be provided as long as the display means can be provided. Further, it is preferably installed in a cold area, a snowfall area, or an area where fog is often generated.

When the display device has a support portion, the support portion may be embedded in these places where the display device is installed, or may be fixed by another member. For example, the pillar 18 may be embedded in the road surface or may be fixed on the road surface. Further, the intermediate support cylinder 16 may be embedded in the wall surface or may be fixed on the wall surface. Further, on the water surface, it may be supported by another member and float, or a weight (anchor) may be attached.

FIG. 2 is an exploded perspective view of the display device according to the first aspect of the present invention. As shown in FIG. 2, the display unit 1
Reference numeral 2 denotes a front plate 22 having a display portion on which a predetermined pattern is formed, a rear plate 24 that continuously connects a pair of facing side plates and a top plate, and is arranged between the front plate 22 and the rear plate 24. The heating / heat-retaining optical fiber 31 is embedded in the heat-retaining portion 26. The surface plate 22 includes
A plurality of pattern display optical fibers 32 are embedded, and a plurality of light diffusion ends 32a of the pattern display optical fibers 32 are exposed on the display portion side to form a predetermined pattern.

A bundle of pattern display optical fibers 32 embedded in the surface plate 22 so that one end is exposed, and a heating / heat retaining optical fiber 31 whose ends are embedded in the heat retaining portion 26.
The back plate 24 and the intermediate support tube 1 are connected to the laser oscillating device 14 without exposing the bundle of the sheets to the outside when the display device is assembled.
Through holes 24a, 16a, 16b, and 18a for passing a bundle of optical fibers are formed in the column 6 and the column 18, respectively. The through holes 24a and 16a and the through holes 16b and 18a are formed so that the through holes correspond to each other when the display device is assembled.

First, the bundle of the pattern display optical fibers 32 embedded in the surface plate 22 so that one end thereof is exposed is as follows.
It penetrates the heat retaining portion 26. Then, it joins the bundle of heating / heat-retaining optical fibers 31 whose ends are embedded in the heat-retaining section 26,
Alternatively, separately, the through hole 24a of the back plate 24 is penetrated and the through hole 1 of the intermediate support cylinder 16 corresponding to the through hole 24a is formed.
6a to reach the inside of the intermediate support cylinder 16. Further, the bundle of the optical fibers 31 and 32 passes through the inner space of the intermediate support cylinder 16, penetrates the through hole 16b, passes through the through hole 18a of the pillar 18 corresponding to the through hole 16b, and reaches the inside of the pillar 18. The optical fibers 31 and 32 further pass through the inner space of the column 18 and are connected to the laser oscillator 14 installed on the column 18.

In the example of FIG. 2, one laser oscillator 14 is installed, but the present invention is not limited to this. There may be multiple laser oscillators, each with a heating
The heat retention optical fiber 31 and the pattern display optical fiber 32 may be connected.

Further, in the example of FIG. 2, the laser oscillator 14
Is installed on the upper part of the column, but the present invention is not limited to this. For example, it may be fixed to the wall surface of the support pillar, or may be provided in the support pillar, the joint between the support pillar and the intermediate support tube, the intermediate support portion, or the display portion. Further, it may be provided outside the display device.

As shown in FIG. 2, the laser oscillator 14
May be provided with a power source such as the power generation device 20 to supply electricity for oscillating the laser. Examples of the type of power source include a solar cell, a wind power generator, a storage battery, and other power sources, and these may be used together. Further, these power sources may be provided in the laser oscillation device 14, or at a place distant from the laser oscillation device 14,
For example, it may be fixed to the wall surface of the support pillar, or may be provided in the support pillar, the joint between the support pillar and the intermediate support tube, the intermediate support portion, or the display portion. Further, electricity may be supplied from a power supply provided outside the display device. The power supply may directly supply electricity to the laser oscillation device 14, or may appropriately supply electricity via a transformer.

When there is a power source, the laser oscillator 14 appropriately sets a voltage capable of supplying electricity required to oscillate a predetermined laser. The voltage required to oscillate a given laser is not particularly limited. From the viewpoint of improving economic efficiency, a low voltage is preferable, for example, 1.5V to 1
The laser can be oscillated with a voltage of 5V. The required voltage can be appropriately set depending on the installation location and application of the display device, the outside temperature, the weather, and the like.

As the laser oscillation device 14 connected to the optical fibers 31 and 32, well-known laser oscillation devices that oscillate a laser beam can be widely used.

In particular, as the laser oscillator connected to the heating / heat-retaining optical fiber 31, it is preferable to use one that oscillates a laser in the infrared region from the viewpoint of efficiently converting the laser beam into heat energy. The wavelength and the output can be appropriately selected depending on the material forming the heat retaining unit 26, the outside temperature of the place where the display device is installed, the weather, and the like. If necessary, it is possible to oscillate a laser that complies with the radiation safety standards of JIS C6802 laser products. Regarding the wavelength, for example, high safety,
From the viewpoint of improving the economical efficiency, when oscillating a laser in the infrared region, 760 nm to 1100 nm is preferable, and 820 nm to 1040 nm is more preferable. In this specification, the infrared region includes a near infrared region and a far infrared region.

Further, as the laser oscillation device connected to the pattern display optical fiber 32, there is a possibility that the laser may hit the human body, and if necessary, it does not affect the human body or there is very little possibility of giving it. A device that oscillates a laser can be used. Regarding safety, it complies with the radiation safety standards for laser products of JIS C6802. For example, one having a wavelength longer than that of a radiation region such as X-ray can be used. For example, lasers in the ultraviolet, visible, infrared, and microwave regions can be used, and from the viewpoint of high safety, good economic efficiency, and low technical effort, for example, 50
A laser having a wavelength of 0 nm to 1000 nm can be mentioned.

In particular, in the laser oscillation device connected to the pattern display optical fiber 32, the laser output can be appropriately selected depending on the installation place of the display device 10, the use, etc., but in principle, the laser of JIS C6802 is selected. It is preferable not to exceed the safety class 3a of the radiation safety standard of the product. Even if the laser output is low, the function as a display device can be sufficiently exhibited. In addition,
It is also possible to use a device with a large output, depending on the installation location and application of the display device.

Regarding the wavelength and output of the laser oscillated by the laser oscillator 14, it is possible to oscillate a laser having a desired wavelength and output through an appropriate wavelength / output controller. Further, the laser oscillation device 14 may be provided with a control device so as to oscillate the laser at a predetermined time interval, or may be controlled by remote control. For example, it is possible to control the on / off of the laser oscillation, the wavelength and the output according to the time zone, the brightness of the outside world, the weather condition of the place where the display device is installed, and the like. Can be controlled.

In the laser oscillating device connected to the pattern display optical fiber 32, the place where the display device is installed,
It is also possible to use a laser in the visible light region having a desired color depending on the application of the display device and the like. For example, a laser oscillating device that oscillates the three primary colors of light may be used in combination to obtain a desired color.

Further, a part of the group of the pattern display optical fibers 32 connected to the laser oscillator is selected, and the laser beam is transmitted only to the selected group.
It is also possible to control the selection of the groups so as to change at predetermined time intervals or continuously. By doing so, the transmission of the laser beam itself can be adjusted by the light diffusion end 32a forming the optical display pattern.
As a result, the light display pattern can also be given motion. In this case, it is preferable that the optical fiber 32 for pattern display connected to the laser oscillator and the position of the light diffusion end 32a of the optical fiber 32 for pattern display on the optical display pattern are associated with each other.

As shown in FIG. 2, a predetermined pattern such as characters, figures, numbers and patterns is formed on the surface of the surface plate 22 by the plurality of light diffusion ends 32a according to the purpose of the display device 10. There is. Such a pattern is not limited to the pattern of road signs, and may be a pattern corresponding to the contents of a traffic signal, a turn signal indicator, an indicator board, a display board, various signboards, and the like.

These patterns may be formed only by the light diffusing end 32a or may be formed in combination with a known pattern forming method. For example, a predetermined pattern may be formed with paint or the like, and the light diffusion end 32 a may be exposed from the surface plate 22 according to the pattern. In addition, the light diffusing end 32a may be covered, or the light diffusing end 32a may be covered.
A colorless or colored transparent or semi-transparent member may be coated on the pattern to form a desired coloring pattern.

The shape of the surface plate 22 is not particularly limited, and a known shape such as a polygonal shape or a circular shape can be selected according to the purpose such as the above-mentioned mark.

In the example of FIG. 2, the surface plate 22 and the heat retaining portion 26 described later are separate members, but the present invention is not limited to this, and the heat retaining portion 26 itself may be the surface plate. In this case, the above-mentioned pattern is formed on the heat retaining section 26.

FIG. 3 shows the heat insulating portion 26 and the surface plate 2 of FIG.
It is a cross-sectional schematic diagram of 2.

As shown in FIG. 3, the light diffusing ends 32a, which are one ends of the plurality of pattern display optical fibers 32, are embedded so as to penetrate the heat retaining portion 26 and the surface plate 22. The location of the light diffusion end 32a is not particularly limited,
It may be selected according to a predetermined interval, or may be randomly arranged with an average density. Further, the disposition density can be appropriately set according to the installation location and application of the display device.

Further, as shown in FIG. 3, the light diffusion ends 31a, which are the ends of the plurality of heating / heat-retaining optical fibers 31, are embedded in the heat-retaining section 26. The heat retaining section 26 can be heated and kept warm by the laser beam emitted from the light diffusing end 31a. The location of the light diffusing end 31a is not particularly limited, and may be selected according to a predetermined interval,
It may be randomly arranged with an average density. Further, the arrangement density is appropriately set depending on the outside air temperature where the display device is installed and the weather.

Also, depending on the place to be heated and kept warm,
The location where the light diffusion end 31 a is provided may be the entire heat retaining section 26 or a part of the heat retaining section 26. For example, by embedding the light diffusion end 31a in the upper portion of the heat retaining section 26,
The upper portion of the display unit 12 can be intensively heated and kept warm.

FIG. 4 is an enlarged schematic view of the area IV in FIG. The position of the light diffusion end 31a in the cross section of the heat retaining portion 26 is not particularly limited. As shown in FIG. 4, the light diffusion edge 3
1a may be embedded so that it may be located in the heat retention part 26, the light diffusion end 31a may be fixed by contacting the surface of the heat retention part 26, and the heat retention part 26 may be penetrated. . From the viewpoint of efficiently heating and retaining the heat retaining portion by the laser beam emitted from the light diffusing end 31 a, it is preferable that the heat retaining portion 26 is located near the center of the thickness range of the heat retaining portion 26. From the viewpoint of heating and maintaining the temperature of the members that are placed in close contact with each other, in the range of the thickness of the heat retaining portion 26, the light diffusing end 31a may be embedded so as to reach a position slightly closer to the member than the center thereof. preferable.

The direction of the light diffusing end 31a is such that the heat retaining portion 2
From the viewpoint of heating and maintaining the temperature of the member installed close to or in close contact with the member 6, it is preferable to face the member. For example, in the figure, the surface plate 22 installed from the right side of the heat retaining section 26.
From the viewpoint of heating and maintaining heat, it is preferable to face the direction of the front plate 22 and heat the rear plate 24 arranged from the left side.
From the viewpoint of heat retention, it is preferable to face the direction of the back plate 24, and from the viewpoint of heating and heat retention of the top plate of the display unit 12, it is preferable to face the upper direction.

In the above example, the case where the heat retaining portion 26 is formed as one layer has been shown, but the present invention is not limited to this, and a plurality of layers may be formed, and a member to be heated and kept warm. Depending on the shape, it may be appropriately formed into a desired shape, or a plurality of heat retaining portions may be combined and used depending on the place where heating / heat retaining is desired. Further, the heat retaining section may be inserted into a part of the member to be heated / heated. For example, only the upper portion of the surface plate 22 may be formed by the heat retaining portion.

FIG. 5 is an enlarged schematic view of the area V in FIG. It suffices that the light diffusing end 32a is exposed from the surface plate 22, and the method of embedding the pattern display optical fiber 32 in the surface plate 22 is not particularly limited. As shown in FIG. 5, the pattern display optical fiber 32 may be embedded so that the light diffusing end 32 a does not project outward from the surface of the surface plate 22, or the light diffusing end 32 a may project from the surface of the surface plate 22. You may bury it like this. From the viewpoint of preventing snow and dust from adhering to the surface of the surface plate 22, the surface of the surface plate 22 is preferably smooth as shown in FIG.

Further, the directivity of the laser beam is controlled by processing the exposed light diffusing end 32a into a lens shape, or by attaching a transparent or semitransparent member such as a glass droplet to the tip to form a lens shape. be able to. Further, the cut surface of the optical fiber may be exposed as it is.

FIG. 6 shows a schematic sectional view of another example of the heat retaining portion 26 and the surface plate 22. This is an example in which the heat retaining unit 26 also serves as the display unit 22. In this case, the pattern display optical fiber 32 is embedded in the heat retaining section 26 so that the light diffusion end 32a is exposed. A predetermined pattern such as characters, figures, numbers and patterns can be formed on the surface of the heat retaining section 26 where the light diffusion end 32a is exposed, according to the purpose of the display device 10.

FIG. 7 shows a schematic sectional view of another example of the heat retaining section 26. This is an example in which, as the heat retaining portion 26, a heat retaining portion having the light diffusing end 31a buried therein is folded in two. A through hole 26a is formed in the heat retaining portion 26 on the left side in the figure, that is, on the side where the back plate 24 is installed and at a position corresponding to the through hole 24a. The bundle of heating / heat-retaining optical fibers 31 and the bundle of pattern display optical fibers 32 connected to the surface plate 22 can flow toward the back plate 24 through the through holes 26a.

As shown in FIG. 7, the direction of the light diffusing end 31a is right in the right region of the heat retaining portion 26, upward in the upper part, and left in the left region in the figure. Therefore, the surface plate 2 installed from the right side of the heat retaining section 26
2. The top plate installed from above and the back plate 24 installed from left can be efficiently heated and kept warm.

In the first embodiment of the present invention, the heat insulating section 26
Can also be provided in the support. FIG. 8 shows an example in which the heat retaining portion 26 is provided inside the intermediate support cylinder 16 which constitutes the support portion. As shown in FIG. 8, the heat retaining section 26 can be installed by appropriately forming a tubular shape or the like in accordance with the structure of the supporting section. The heating / heat-retaining optical fiber 31 having the light diffusion end 31a embedded in the heat-retaining portion 26 is transmitted in the axial direction inside the heat-retaining portion 26 formed in a cylindrical shape, and appropriately passes through the through hole or the like to cause the laser oscillation device 14 to travel. Connected to. As shown in FIG. 2, when a predetermined through hole is formed in the intermediate support tube 16 and a bundle of optical fibers 31 or a bundle of optical fibers 32 is introduced into the intermediate support tube 16 through this through hole, The optical fiber 31 shown in can also be connected to the laser oscillation device 14 through a through hole or the like, together with a bundle of these optical fibers.

The heat insulating portion 26 is preferably made of a material having a high heat insulating effect, and particularly preferably made of a material that easily absorbs electromagnetic waves. Examples of such a material include synthetic fibers generally used for clothing having a high heat retaining effect, charcoal such as Bincho charcoal, particularly fine charcoal, volcanic ash, lava, and a composition containing these powders. Etc. can be mentioned.

In the first embodiment of the present invention, as shown in FIG. 2, the display section 12 has the rear plate 24 from the viewpoint of improving the heat retaining effect or protecting the optical fibers 31 and 32 to improve the appearance. Can have. In addition, as shown in FIG. 2, the display unit 12 enhances the heat retention effect, or
From the viewpoint of protecting the optical fibers 31 and 32 and improving their appearance, they may have a top plate, a side plate, and a bottom plate. These surfaces may be formed integrally with the front plate 22 or the rear plate 24, or may be provided as separate members. The shape of the top plate is not particularly limited, but from the viewpoint of preventing snow, water, etc. from accumulating on the top plate, the cross-sectional shape is a part of a circle or a part of a polygon close to a circle. It is preferable that

The heat-retaining portion 26 is provided on the surface plate 2 via an adhesive or the like.
2 and the back plate 24 are preferably brought into close contact with each other.

In the above example, in order to connect the heat retaining section 26 to the laser oscillating device 14 through the bundle of heating / heat retaining optical fibers 31, and the surface plate 22 is connected through the bundle of the pattern displaying optical fibers 32 to the laser. Through holes 24a, 16a, 16b, and 18a are provided in the back plate 24, the intermediate support cylinder 16, and the support column 18 so as to be connected to the oscillator 14, but in the display device according to the first aspect of the present invention, The number of laser oscillators 14 is not limited to the above, and the number of laser oscillators 14 to be installed and the location where the through holes are formed and the number of through holes can be appropriately selected according to the positional relationship between the display section and the support section.

For example, when the display unit is directly fixed to the support, it is preferable to form a through hole at the contact portion between the display unit and the support. For example, when the side surface of the display is fixed to the support. , To form a bundle of heating and heat-retaining optical fibers directly from the heat retaining section 26 into the support without forming a through hole in the back plate, forming a through hole in the side plate, or providing the side plate itself. You can Further, when the laser oscillators to be connected are different depending on the optical fiber 31 or the optical fiber 32, through holes can be appropriately formed so as to connect the respective fibers to the respective laser oscillators.

FIG. 9 shows an example of the display device in which the supporting portion is composed of only the columns. FIG. 9A is a schematic front view showing an example of the snow protection / snow melting type display device according to the first aspect of the present invention, and FIG. 9B is a side view of FIG. 9A.

The display device 10 includes a display section 12 and two types of laser oscillation devices 14a and 14b. In the example of FIG. 9, the display device 10 further includes a support portion that supports the display portion 12, and the support portion is fixedly installed on the road surface and includes a support column 18 that fixes the display portion 12. The laser oscillators 14 a and 14 b are installed below the support 18. The outer peripheral surface of the display unit 12 is protected by the side plate 28.

FIG. 10 is an exploded perspective view of the display device shown in FIG. The side plate 28 is not shown in order to make the main configuration of the display unit 12 easy to see. As shown in FIG. 10, the display unit 12 is arranged between the front plate 22 having a display portion on which a predetermined pattern is formed, the rear plate 24, and the front plate 22 and the rear plate 24. The heat insulating portion 26 in which the end of the optical fiber 31 is buried. A plurality of pattern display optical fibers 32 are embedded in the surface plate 22.
A plurality of light diffusing ends 32a are exposed on the display portion side and form a predetermined pattern.

A bundle of pattern display optical fibers 32 embedded in the surface plate 22 so that one end is exposed, and a heating / heat retaining optical fiber 31 whose ends are embedded in the heat retaining section 26.
The back plate 24 and the pillars 18 are connected to the laser oscillator 14 without exposing the bundle of sheets to the outside during the assembly of the display device.
Through holes 24a for passing a bundle of optical fibers, 1
8a and 18b are formed, respectively. Through hole 24a
And 18a are formed so that the through holes correspond to each other when the display device is assembled.

First, the bundle of pattern display optical fibers 32 embedded in the surface plate 22 so that one end thereof is exposed is as follows.
It penetrates the heat retaining portion 26. Then, it joins the bundle of heating / heat-retaining optical fibers 31 whose ends are embedded in the heat-retaining section 26,
Alternatively, they separately pass through the through holes 24 a of the back plate 24, pass through the through holes 18 a of the support columns 18 corresponding to the through holes 24 a, and reach the inside of the support columns 18. Furthermore, the optical fiber 31,
The bundle of 32 passes through the inner space of the column 18 and penetrates the through hole 18b. Next, the bundle of heating / heat-retaining optical fibers 31 is installed in the lower part of the column 18 by the laser oscillator 14a.
The bundle of pattern display optical fibers 32 is connected to the laser oscillator 14b.

An example of the display device according to the first aspect of the present invention is configured as described above.

Next, the operation of an example of the display device according to the first aspect of the present invention will be described with reference to FIGS. 2 and 10. The laser oscillating device 14 receives a power supply and oscillates a predetermined laser. When the laser oscillation device connected by the heating / heat-retaining optical fiber 31 and the pattern display optical fiber 32 are different, or when different lasers are oscillated, the required laser beams are the same, and the same laser beam is used. Are transmitted to the heating / heat-retaining optical fiber 31 and the pattern display optical fiber 32, which are connected to the laser oscillator.

The laser beam transmitted to the heating / heat-retaining optical fiber 31 follows the route in which the heating / heat-retaining optical fiber 31 is installed and reaches the heat-retaining section 26 in which the light diffusion end 31a is embedded. The laser beam is irradiated from the light diffusing end 31a into the heat retaining section 26 to heat and retain the heat retaining section 26. This heat heats the surface plate 22, the back plate 24, or the intermediate support cylinder 16 of the display unit 12, which is provided close to or in close contact with the heat retaining unit 26.

At this time, it is preferable that the snow adhered to the front surface plate 22, the rear surface plate 24, and the intermediate support cylinder 16 is melted and transmitted through these members, and is heated and kept at a temperature necessary for flowing down. It is not necessary that the snow on the display unit 12 and the support unit evaporates instantly and generate a fog or mist. The temperature at which the member to be heated / heated is heated / heated can be appropriately set according to the temperature and weather conditions of the outside air at the place where the display device 10 is installed.

On the other hand, the laser beam transmitted to the pattern display optical fiber 32 follows the route in which the pattern display optical fiber 32 is installed, reaches the surface plate 22 embedded so that the light diffusion end 32a is exposed, and emits light. It is irradiated from the diffusion end 32a.

The laser beam emitted from each diffusing end 32a causes each light diffusing end 32a to develop a color, and when the light diffusing end 32a has a transparent or semi-transparent covering member, causes the covering member to further develop a color. As a result, a predetermined light display pattern formed by the plurality of light diffusion ends 32a is generated.

As a result, the light display pattern formed by the light diffusion edge can be clearly seen by the observer even in the darkness such as at night.

Then, the laser beam goes straight in the atmosphere. If there is a foreign substance such as ice, fog, rain / snow water, smoke, etc. in the straight-ahead direction of the laser beam, the laser beam develops these colors and goes straight. In other words, if there is snowfall or freezing of rain / snow water on the light display pattern, or if there is a foreign substance floating in the atmosphere, the range of the sharp traveling path peculiar to the laser beam is determined according to this presence. At, intermittent or continuous visible light streaks occur. The number of streaks of light changes according to the number of laser beams. Even when the laser beam is in a region other than visible light, it causes the snow and ice existing in the direction in which the laser beam travels straight, and the floating foreign matter to develop color, which causes intermittent or continuous sharp lines of light. For example, if the laser beam is infrared light, it will cause red light streaks.

As described above, according to the snow-prevention / snow melting type display device according to the first aspect of the present invention, various roads and tracks, sidewalks such as shopping streets, plazas, parking lots, bridges, runways, and other road surfaces, Installed on the wall surface, or on the sea surface such as a route, in an exposed state to the outside air,
Even if deployed or buried, there are no worries of snow accretion, snowfall, freezing, freezing, various landmarks, traffic lights, direction indicators, indicator boards,
A display board, a signboard, etc. can be provided. Therefore, the display device according to the first aspect can be effectively used as a sign or the like for cold or snowy areas.

Further, the display device according to the present embodiment can be used even in the dark, when the display portion of the display device has a shield such as snow or ice, and when the visibility is poor. Even if there is, it is possible to provide a display means capable of confirming the contents of the display device.

Further, since the display device according to the present embodiment uses a plurality of optical fibers connected to the laser light source, the display device can exhibit the above-mentioned functions with extremely low electric energy, which is economical. Further, since the optical fiber which is not easily deteriorated with time is used, it is free from problems such as chipping, so that the maintenance is very easy.

When the laser oscillating device 14 is controlled by a control device or remote control, an optical display pattern can be generated according to the brightness of the external environment, the time zone, and the weather condition. It is also possible to give motion to the light display pattern.

Subsequently, the snow protection, which is the second aspect of the present invention,
The snow melting display system will be described. FIG. 11: is a schematic diagram which shows an example of the snow-proof / snow melting type display system concerning the 2nd aspect of this invention.

As shown in FIG. 11, the display system 40
Has a plurality of display devices 42, and an electricity distribution line 46 connected to the electricity supply device 44 and connecting the electricity supply device 44 and each display device 42.

Examples of the type of the electricity supply device 44 include a solar cell, a wind power generator, a storage battery, and other power sources, and these may be used together. In the electricity supply device 44, a voltage capable of supplying electricity required for oscillating a predetermined laser in each display device 42 is appropriately set to each display device 42. The voltage supplied to each display device 42 is not particularly limited. From the perspective of improving economic efficiency,
A low voltage is preferable, and for example, a predetermined laser can be oscillated in each display device 42 with a voltage of 1.5V to 15V. The voltage supplied to each display device 42 may be set to a high voltage according to the temperature of the outside air at the installation location of each display device, weather conditions, and the like.

The location of the electricity supply device 44 is not particularly limited as long as it can supply electricity to each display device 42 through the electricity distribution line 46. The display device 42 may be installed at a place where it is installed, for example, on various roads and railroads, sidewalks such as shopping streets, plazas, parking lots, road surfaces such as bridges and runways, wall surfaces, and sea surfaces such as shipping routes. However, you may install in the place away from the place where each display device 42 is installed.

The electricity distribution line 46 may be any material as long as it can supply necessary electricity from the electricity supply device 44 to each display device 42, and the material, length, thickness, etc. are not particularly limited. Well-known ones can be widely used. For example, a known material used as an electric wire can be used.

The electric distribution line 46 may be used by being embedded in the place where each display device 42 is installed, or may be fixed to the road surface or wall surface of these places and used. Alternatively, an existing electric wire may be used.

As shown in FIG. 11, the electric distribution line 46 is branched according to the number of the display devices 42, and each end 46 a is connected to each display device 42. It should be noted that one end 46a may be connected to each display device 42, or a plurality of ends 46a may be connected.

As shown in FIG. 11, each display device 42 is
It has a display unit 12 and a laser oscillation device 14 which is connected to an end 46a which is one of the ends of the electricity distribution line 46 and which receives electricity from the end 46a to oscillate a laser. In the example of FIG. 11, each display device 42 is further provided with a support portion for supporting the display portion 12, and the support portion is the support column 1
It is composed of 8.

Each display device constituting the snow-proof / snow-melting type display system according to the second aspect of the present invention may have a support portion for supporting the display portion 12, as shown in FIG. Alternatively, it may have no supporting portion. Further, in the case of having a supporting portion, the supporting portion is a plurality of supporting members,
For example, it may be composed of a column and an intermediate support cylinder provided laterally on the column, or a single support member, for example, FIG.
As shown in FIG. 5, it may be composed of only the columns.

Further, in the example of FIG. 11, the laser oscillator 1
4 is installed on the lower side surface side of the column, but the present invention is not limited to this. For example, it may be fixed to the wall surface of the column, or may be installed above the column. Further, it may be provided in the support, the joint between the support and the intermediate support tube, the intermediate support, or the display. Further, it may be provided outside the display device.

In the example of FIG. 11, the laser oscillator 1
However, the present invention is not limited to this. There may be a plurality of laser oscillating devices, and a heating / heating optical fiber and a pattern display optical fiber may be connected to each.

The laser oscillator 14 oscillates a laser having a predetermined wavelength by the electricity supplied from the end 46a of the electricity distribution line 46. The laser oscillating device 14 may supply electricity directly through the electricity distribution line 46, or may appropriately supply electricity through a transformer. Each display device 42 may have an electricity supply device so as to perform a display function even in an emergency such as a power failure.

The description of each display device 42 is the same as that of the snow-proof / snow-melting display device according to the first aspect of the present invention, except for the method of supplying electricity to the laser oscillation device.

According to the snow protection / snow melting display system according to the second aspect of the present invention, various roads and railroads, sidewalks such as shopping streets, plazas, parking lots, roads such as bridges and runways, wall surfaces, and Even if it is installed, deployed, or buried on the surface of the sea such as a sea route, etc. exposed to the outside air, there are no worries of snow accretion, snowfall, icing, freezing, various landmarks, traffic lights, direction indicators, indicator boards, indications. It is possible to provide systems such as boards and signs. For this reason, it can be effectively used as a system for signs for cold and snowy areas. In particular, it can be used more advantageously when a plurality of display devices are continuously provided in a certain area.

Further, according to the display system of the present embodiment, the visibility is further deteriorated even in the dark or when the display portion of the display device has a shield such as snow or ice. Even in such a case, it is possible to provide a display means system capable of confirming the contents of the display device.

In the display system according to this aspect,
It is possible to make each display device exhibit the function of snow protection and snow melting and display function with extremely low electric energy.
Since it uses optical fibers that do not deteriorate over time,
Maintenance is also very easy.

Next, the snow protection, which is the third aspect of the present invention,
The snow melting display system will be described. FIG. 12 is a schematic diagram showing an example of a display system according to the third aspect of the present invention.

As shown in FIG. 12, a display system 50.
Is a plurality of display devices 52 and two types of laser oscillation devices 5
4a and 54b, each display device 52 is connected to the laser oscillation device 54a via a heating / heating optical fiber bundle 56, and is also connected to the laser oscillation device 54b via a pattern display optical fiber bundle 58. It The laser oscillators 54a and 54b supply electricity by a power source (not shown) to oscillate a predetermined laser.

In the laser oscillator 54a, each display device 5
An output capable of supplying a laser having an output required for the device 2 to function as a snow-proof / snow melting type display device is appropriately set. The laser output distributed to each display device 52 can be appropriately selected depending on the material forming the heat retaining portion provided in each display device, the outside air temperature of the place where the display device is installed, the weather, and the like. If necessary, it is possible to oscillate a laser that complies with the radiation safety standards of JIS C6802 laser products.

As the laser oscillating device 54a, a well-known laser oscillating device that oscillates a laser beam can be widely used. From the viewpoint of efficiently converting the laser beam into heat energy, it is preferable to use one that oscillates a laser in the infrared region. The wavelength and the output can be appropriately selected depending on the material forming the heat retaining section provided in each display device 52, the outside air temperature of the place where the display device is installed, the weather, and the like. If necessary, it is possible to oscillate a laser that complies with the radiation safety standards of JIS C6802 laser products. Regarding the wavelength, for example, in the case of oscillating a laser in the infrared region, 760 nm to 1100 nm is preferable, and 820 nm to 1040 nm is more preferable, from the viewpoints of high safety and economical efficiency.

In the laser oscillator 54b, each display device 5
The output that can supply the laser with the output required for the device 2 to function as the display device is appropriately set. The laser output to be distributed to each display device 52 can be appropriately selected depending on the installation location or application of each display device. If necessary, it is possible to oscillate a laser that complies with the radiation safety standards of JIS C6802 laser products. Each display device 52 can sufficiently function as a display device even if the distributed laser output is low. It should be noted that a device with a large output can also be used depending on the installation location or application of each display device.

As the laser oscillating device 54b, a device that oscillates a laser that does not affect the human body or has a very low risk of affecting the human body is used when the laser may hit the human body or when necessary. be able to. Regarding safety, it complies with the radiation safety standards for laser products of JIS C6802. For example, one having a wavelength longer than that of a radiation region such as X-ray can be used.
For example, ultraviolet, visible light, infrared, laser in the microwave region can be used, high safety, economical efficiency, and from the viewpoint of reducing the technical effort,
For example, a laser having a wavelength of 500 nm to 1000 nm can be used.

The laser oscillating device 54b can also supply a laser in a visible light region having a desired color, depending on the installation place of each display device 52, the application, and the like. For example,
In order to obtain a desired color, a laser oscillation device that oscillates the three primary colors of light can be used in combination.

Further, of the pattern display optical fiber bundle 58 connected to the laser oscillating device 54b, some groups are selected, the laser beam is transmitted only to the selected groups, and the selection of the groups is performed. It is also possible to control so as to change at a predetermined time interval or continuously. By doing so, the transmission of the laser beam itself can be adjusted by each display device 52 or by the light diffusion end forming the optical display pattern of each display device 52.

The laser oscillators 54a and 54b may have a controller for adjusting the wavelength or the output. Further, the laser oscillation device 54 may be provided with a control device so as to oscillate the laser at a predetermined time interval, or may be controlled by remote control. For example, the laser can be controlled to oscillate according to the time zone, the brightness of the outside world, the weather conditions of the installation location of the display device, and the like.

The laser oscillators 54a and 54b are arranged in the respective display devices 52 at the heating / heating optical fiber bundle 56 or the pattern display optical fiber 58, respectively.
There is no particular limitation as long as it is a place where a laser can be supplied via. A place where each display device 52 is installed, for example, various roads and railroads, sidewalks such as shopping streets, plazas, parking lots,
It may be installed on a road surface such as a bridge or a runway, a wall surface, or a sea surface such as a shipping route, or may be installed in a place away from the place where each display device 52 is installed. Laser oscillators 54a, 5
4b may be installed at a distant place, or may be installed closely or close to each other.

In the example of FIG. 12, two types of laser oscillators are installed, but the present invention is not limited to this. The laser oscillator may be of one type or of two or more types.

The optical fibers constituting the optical fiber bundles 56 and 58 may be any materials as long as they can supply the required laser from the laser oscillating devices 54a and 54b to each display device 52. There is no particular limitation, and known ones can be used. For example, a plastic optical fiber (POF) can be used. The optical fiber bundles 56 and 58 may be embedded and used in the place where the display device 52 is installed, or may be fixed and used on the road surface or wall surface of these places.

As shown in FIG. 12, for example, the number of the respective optical fiber bundles 5 corresponding to the number of the respective display devices 52.
6, 58, laser oscillators 54a, 5 respectively
By introducing a laser from 4b and connecting the ends 56a and 58a of the optical fiber bundles to the respective display devices 52, it is possible to supply the required laser to each display device 52.

As shown in FIG. 12, each display device 52 is
The display unit 12 has a display unit 12, and the display unit 12 has a heat-retaining unit (not shown) in which light diffusion ends of a plurality of heating / heat-retaining optical fibers constituting one end 56a of the heating / heat-retaining optical fiber bundle 56 are embedded. Have. In addition, the display unit 12
A plurality of pattern display optical fibers forming one end 58a, which is one of the ends of the pattern display optical fiber bundle 58, is embedded, and a plurality of light diffusion ends of the pattern display optical fibers are exposed on the display portion side, and a predetermined light diffusion end is exposed. Forming a pattern.

In the example of FIG. 12, each display device 52 is further provided with a support portion for supporting the display portion 12, and the support portion is composed of the column 18.

Each display device constituting the snow-proof / snow-melting type display system according to the third aspect of the present invention may have a support portion for supporting the display portion 12, as shown in FIG. Alternatively, it may have no supporting portion. Further, in the case of having a supporting portion, the supporting portion is a plurality of supporting members,
For example, it may be composed of a column and an intermediate support cylinder provided laterally on the column, or a single support member, for example, FIG.
As shown in FIG. 5, it may be composed of only the columns.

Further, a heating / heat-retaining optical fiber bundle 56 in which a light diffusion end is embedded in a heat-retaining portion (not shown) of the display unit 12
To the laser oscillator 54a, and to connect the pattern display optical fiber bundle 58 having the light diffusion end embedded in the display 12 to the laser oscillator 54b. In this case, a through hole may be appropriately formed in the support portion. For example, as shown in FIG. 12, the optical fiber bundles 56 and 58 may be introduced from the bottom surface of the support column 18, transmitted through the inner space of the support column 18, and connected to a heat retaining section (not shown) in the display section 12. It may be connected to the display unit 12 along the outer wall surface of 18.

The description of the display device 52 is the same as the description of the display device according to the first aspect of the present invention, except for the method of supplying the laser.

According to the snow-proof / snow-melting type display system of the third aspect of the present invention, various roads and railroads, sidewalks such as shopping streets, plazas, parking lots, bridges, runways, and other road surfaces, wall surfaces, and further Even if it is installed, deployed, or buried on the surface of the sea such as a sea route, etc. exposed to the outside air, there are no worries of snow accretion, snowfall, icing, freezing, various landmarks, traffic lights, direction indicators, indicator boards, indications. It is possible to provide systems such as boards and signs. For this reason, it can be effectively used as a system for signs for cold and snowy areas. In particular, it can be used more advantageously when a plurality of display devices are continuously provided in a certain area.

Further, according to the display system of the present embodiment, the visibility is further deteriorated even in the dark or when the display portion of the display device has a shield such as snow or ice. Even in such a case, it is possible to provide a display means system capable of confirming the contents of the display device.

In the display system according to this aspect,
It is possible to make each display device exhibit the function of snow protection and snow melting and display function with extremely low electric energy.
Since it uses optical fibers that do not deteriorate over time,
Maintenance is also very easy.

Although the snow-proof / snow-melting type display device and the snow-proof / snow melting type display system of the present invention have been described above, the present invention is not limited to the above examples, and various improvements and modifications are possible without departing from the scope of the present invention. Of course, changes may be made.

[0123]

According to the present invention, the snow-proof / snow-melting type display device,
Further, according to the snow-prevention / snow melting display system, it is possible to provide epoch-making various signs and the like without fear of snow accretion, snowfall, freezing, and freezing. Therefore, it can be effectively used as a sign for cold or snowfall areas. Further, according to the present invention, even in the dark, even when there is a shield such as snow or ice in the display portion of the display device, and even when the visibility is obstructed, The contents can be clearly seen by the observer.

Further, according to the snow-proof / snow-melting type display device and the snow-proof / snow melting type display system according to the present invention, the display device can exhibit the snow-proofing / snow melting function and the display function with extremely low electric energy. In addition, maintenance is extremely easy.

[Brief description of drawings]

1A and 1B are schematic views showing an example of a snow-proof / snow-melting type display device according to a first aspect of the present invention.

FIG. 2 is an exploded perspective view of the display device shown in FIG.

FIG. 3 is a schematic cross-sectional view of a heat retaining portion and a surface plate.

FIG. 4 is a partially enlarged view of FIG.

FIG. 5 is a partially enlarged view of FIG.

FIG. 6 is a schematic cross-sectional view showing another example of the heat retaining section and the surface plate.

FIG. 7 is a schematic cross-sectional view showing another example of the heat retaining unit.

FIG. 8 is an exploded perspective view showing an installation example of a heat retaining unit.

9 (a) and 9 (b) are schematic views showing another example of the snow-proof / snow-melting type display device according to the first aspect of the present invention.

10 is an exploded perspective view of the display device shown in FIG.

FIG. 11 is a schematic diagram showing an example of a snow protection / snow melting display system according to a second aspect of the present invention.

FIG. 12 is a schematic diagram showing an example of a snow protection / snow melting type display system according to a third aspect of the present invention.

[Explanation of symbols]

10 Display Device 12 Display Units 14, 14a, 14b Laser Oscillation Device 16 Intermediate Support Cylinders 16a, 16b, 18a, 18b, 24a, 26a Through Holes 18 Struts 20 Power Generation Device 22 Surface Plates 24 Back Plates 26 Insulating Parts 28 Side Plates 31 Heating -Heat-retaining optical fiber 31a Light-diffusing end 32 Pattern-displaying optical fiber 32a Light-diffusing end 40 Display system 42 Display device 44 Electric supply device 46 Electric distribution wiring 50 Display system 52 Display device 54a, 54b Laser oscillator device 56 Heating / heat-retaining optical fiber bundle 56a optical fiber bundle end 58 optical fiber bundle 58a for pattern display end of optical fiber bundle

Claims (12)

(57) [Claims] 1. A display unit, a heat retaining unit provided in the display unit, a first laser oscillation device, and a second laser oscillation device, wherein the heat retaining unit includes a plurality of first optical fibers. Via the plurality of second optical fibers, the display section is connected to the second laser oscillation apparatus via a plurality of second optical fibers, and one end of the second optical fiber is connected to the display section. Exposed on one side of
Further, a snow-proof / snow-melting type display device characterized in that a pattern is formed on the one surface by the one end. 2. A display section, a support section for supporting the display section, a heat retaining section provided on at least one of the display section and the support section, a first laser oscillation device, and a second section. A laser oscillating device, wherein the heat retaining part is connected to the first laser oscillating device via a plurality of first optical fibers, and the display part is a second optical fiber via a plurality of second optical fibers. The second optical fiber is connected to a laser oscillator, and one end of the second optical fiber is exposed on one surface of the display unit,
Further, a snow-proof / snow-melting type display device characterized in that a pattern is formed on the one surface by the one end. 3. The snow-proof / snow-melting type display device according to claim 1, wherein the first laser oscillator device and the second laser oscillator device are the same. 4. The snow protection / snow melting type display device according to claim 1, wherein an end portion of the first optical fiber is embedded in the heat retaining portion. 5. A display system comprising a plurality of display devices and an electricity supply device, wherein the plurality of display devices are connected to the electricity supply device via an electricity distribution line, wherein the display device is a display device. A heat-retaining unit provided in the display unit, a first laser oscillation device connected to the electricity distribution line, and a second laser oscillation device connected to the electricity distribution line, The section is connected to the first laser oscillation device via a plurality of first optical fibers, and the display section is connected to the second laser oscillation device via a plurality of second optical fibers. The one end of the optical fiber is exposed on one surface of the display unit, and the one end forms a pattern on the one surface. 6. A display system comprising a plurality of display devices and an electricity supply device, wherein the plurality of display devices are connected to the electricity supply device via an electricity distribution line, wherein the display device is a display device. Section, a support section for supporting the display section, a heat retaining section provided on at least one of the display section and the support section, and a first section connected to the electricity distribution line.
And a second laser oscillating device connected to the electric distribution line, wherein the heat retaining unit is connected to the first laser oscillating device via a plurality of first optical fibers. The part is connected to the second laser oscillation device via a plurality of second optical fibers, one end of the second optical fiber is exposed on one surface of the display part, and A snow-prevention / snow melting type display system characterized in that a pattern is formed on the surface of the. 7. The snow-prevention / snow melting type display system according to claim 5, wherein the first laser oscillation device and the second laser oscillation device are the same. 8. The snow protection / snow melting type display system according to claim 5, wherein an end portion of the first optical fiber is embedded in the heat retaining portion. 9. A plurality of display devices, a first laser oscillating device, and a second laser oscillating device, wherein the plurality of display devices include the first laser oscillating device via a first optical fiber. And a display system connected to the second laser oscillation device via a second optical fiber, the display device including: a display unit; and a heat retention unit provided in the display unit. The heat insulation unit is connected to the first optical fiber, the display unit is connected to the second optical fiber, one end of the second optical fiber is exposed on one surface of the display unit, and A snow-proof / snow-melting type display system, wherein a pattern is formed on the one surface by the one end. 10. A plurality of display devices, a first laser oscillating device, and a second laser oscillating device, wherein the plurality of display devices include the first laser oscillating device via a first optical fiber. And a display unit connected to the second laser oscillation device via a second optical fiber, wherein the display device includes a display unit, a support unit that supports the display unit, and at least the display unit. A heat-retaining unit provided on either one of the display unit and the support unit, the heat-retaining unit is connected to the first optical fiber, the display unit is connected to the second optical fiber, and 2. A snow-proof / snow melting type display system, wherein one end of the optical fiber 2 is exposed on one surface of the display unit, and a pattern is formed on the one surface by the one end. 11. The first laser oscillation device and the second laser oscillation device.
11. The snow-prevention / snow-melting type display system according to claim 9 or 10, wherein the laser oscillation device is the same as the laser oscillation device. 12. An end portion of the first optical fiber is embedded in the heat retaining portion.
1. The snow-prevention / snow melting type display system according to any one of 1.