阅读说明：本技术 带导光棒的视线诱导标及钢索护栏 (Sight line induction mark with light guide rod and steel cable guardrail ) 是由 笛吹祐登 畠山广大 山崎达也 柴尾幸弘 于 2019-04-15 设计创作，主要内容包括：【课题】提供即使在屋外长期使用发光性能也不易下降,而且施工也容易且卷绕后的松弛也不易发生的带导光棒的视线诱导标及使用其的钢索护栏。【解决手段】由将多个绳股捻合而形成的绳索构件；以与在该绳索构件外周的绳股之间形成的螺旋状的谷间部密合的状态卷绕的、具备以丙烯酸系树脂为主材的芯层和以氟系树脂为主材的包覆层的周面发光型导光棒；以及装载于该导光棒的端部的光源装置来构成视线诱导标,并且将上述导光棒的在使用加速耐候性试验机的试验时间1000小时下的亮度变化量设为±10％的范围内,将色度[x,y]的各数值的变化量设为±0.02的范围内,进而将上述导光棒在-20℃气氛下的弯曲弹性率设为0.5～5.0×10～(3)MPa,进而,以捻角10°～20°的范围将绳股捻合而形成上述绳索构件,以螺距100mm～200mm的范围均匀地形成螺旋状的谷间部。(To provide a sight line guide sign with a light guide bar, which is less likely to cause a decrease in luminous performance even when used outdoors for a long period of time, is easy to construct, and is less likely to cause looseness after winding, and a wire fence using the same. [ MEANS FOR SOLVING PROBLEMS ] a rope member formed by twisting a plurality of strands; a peripheral surface light-emitting light guide rod wound in a state of being closely attached to spiral valley portions formed between strands on the outer periphery of the rope member and including a core layer made of an acrylic resin as a main material and a coating layer made of a fluorine resin as a main material; and a light source device mounted on the end of the light guide rod to form a sight line induction mark, wherein the light guide rod has a luminance variation within a range of + -10% when a test time 1000 hours is performed using an accelerated weather resistance tester, and chromaticity [ x, y ]]The variation of each numerical value of (a) is within a range of + -0.02, and the bending modulus of the light guide rod at-20 ℃ is set to be 0.5 to 5.0X 10 3 MPa, and further, withThe rope member is formed by twisting strands in a twist angle range of 10 DEG to 20 DEG, and the spiral valley portions are uniformly formed in a pitch range of 100mm to 200 mm.)

1. A sight line guide mark with a light guide bar, which is used outdoors and comprises a rope member (3) formed by twisting a plurality of strands (S); a peripheral surface light-emitting light guide rod (1) wound in a state of being in close contact with a spiral valley portion (V) formed between strands (S) (S) on the outer periphery of the rope member (3) and having a core layer (11) mainly made of acrylic resin and a coating layer (12) mainly made of fluorine resin; and a light source device (2) mounted on the end of the light guide rod (1) to form a sight line induction mark with the light guide rod,

the light guide rod (1) has a luminance change amount within a range of + -10% and a chromaticity [ x, y ] within a test time of 1000 hours using an accelerated weather resistance tester]The variation of each numerical value of (a) is within a range of + -0.02, and the bending modulus of the light guide rod (1) at-20 ℃ is 0.5 to 5.0 x 10³MPa，

The rope member (3) is formed by twisting strands (S) (S) … at a twist angle in the range of 10 DEG to 20 DEG, and the spiral valley portions (V) are formed uniformly at a pitch in the range of 100mm to 200 mm.

2. The sight line guide with light guide rod according to claim 1, wherein a material obtained by mixing an acrylic elastomer with a hard acrylic resin is used for the core layer (11) of the light guide rod (1), and a mixing ratio thereof is in a range of 95:5 to 70: 30.

3. The sight line induction mark with a light guide rod according to claim 1 or 2, wherein 0.01 to 5 parts by weight of titanium oxide having an ultraviolet absorbing action is added as a light scattering agent to 100 parts by weight of the main material of the clad layer (12) of the light guide rod (1).

4. The sight line induction mark with a light guide stick according to any one of claims 1 to 3, wherein at an end of the light guide stick (1) wound around the rope member (3), a light emission luminance of the light guide stick (1) at a position 4m away from the light source device (2) when light is incident from the light source device (2) having a drive power supply 30mA, a luminous intensity 20000mcd, and a divergence angle of 20 ° is 3cd/m²The above.

5. The wire fence is characterized in that the wire fence comprises the sight line guide with a light guide rod according to claim 4 and a plurality of support columns (5) arranged on the road at a predetermined pitch, wherein a rope member (3) is stretched between the support columns (5) and (5), and the light source device (2) is mounted on the support column (5) in a state of being mounted on the end of the peripheral surface light-emitting light guide rod (1).

Technical Field

The present invention relates to an improvement of a sight line guide, and more particularly, to a sight line guide with a light guide bar and a cable guard using the same, which can guide a sight line by linearly emitting light in a state of being wound around a rope member, and in which light emitting performance is not easily lowered even when the sight line guide is used outdoors for a long time, and slack after winding is not easily generated.

Background

It is well known that guard rails (so-called wire guardrails) for supporting wires on pillars are often provided on a road shoulder or a central isolation zone on an expressway or the like. However, since it is difficult to visually confirm the wire between the posts in the dark, the wire guard rail may cause an accident such as a driver's contact while traveling at night while ignoring the wire.

Therefore, conventionally, a technique of spirally winding a fluorescent linear body along valleys formed between strands of a wire rope of a wire fence has been known (see patent document 1), and this conventional technique has a problem that it is difficult to impart a sufficient line-of-sight inducing effect to the wire fence because there is a limit to the amount of light emitted from the linear body.

On the other hand, a technique of using fluorescent strands for the wires themselves of the cable guard rail has been known in the related art (see patent document 2), and this related art also has a problem of the amount of light emission as described above, and when the related art is applied to the conventional cable guard rail, it is necessary to replace all the wires, which is time-consuming and costly.

On the other hand, in order to solve the problem of the amount of light emission, a method of supporting a rope (LED rope lamp or the like) having lamps that emit light at a predetermined pitch between struts along a wire is also conceivable, but in this method, it is necessary to support the light source itself that is energized and expose it to the outside, and therefore there is a problem that a failure of the light source is likely to occur due to wind and rain, deterioration, or the like.

Further, conventionally, an LED type self-luminous sight line guide (deliner) provided at an upper portion of a pillar at a predetermined pitch is also known, but since this type of sight line guide emits light intermittently in a dot shape, glare (dizzy) due to front light is generated for a driver during traveling, and a sufficient sight line guide effect and safety are not obtained, and there is room for improvement.

Documents of the prior art

Patent document

Patent document 1: japanese Kokoku publication Sho-54-41049

Patent document 2: JP-A60-40519 (Kokai)

Disclosure of Invention

Problems to be solved by the invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide a sight line guide with a light guide bar, which is capable of linearly emitting light in a state of being wound around a rope member to guide a sight line at night or in a dark place, is less likely to cause a decrease in luminous performance even when used outdoors for a long time, is easy to construct, and is less likely to cause looseness after winding, and a wire fence using the sight line guide.

Means for solving the problems

The present inventors have described means for solving the above problems with reference to the drawings, as follows.

That is, the present invention is characterized in that the rope member 3 is formed by twisting a plurality of strands S for outdoor use; a core layer 11 wound in a state of being closely adhered to spiral valley portions V formed between strands S and S on the outer periphery of the rope member 3 and having an acrylic resin as a main material and a fluorine-based resinA light guide rod 1 of a peripheral surface light emitting type of a coating layer 12 made of resin as a main material; and a light source device 2 mounted on the end of the light guide rod 1, wherein the light guide rod 1 has a luminance variation within a range of + -10% in 1000 hours of a test time using an accelerated weather resistance tester, and chromaticity [ x, y ]]The variation of each numerical value of (a) is within a range of + -0.02, and the bending modulus of the light guide rod 1 at-20 ℃ is set to be 0.5 to 5.0 x 10³And MPa, and strands S.S … are twisted in a twist angle range of 10 DEG to 20 DEG to form the rope member 3, and spiral valley portions V are uniformly formed in a pitch range of 100mm to 200 mm.

In order to achieve both bending modulus and light guiding performance, it is preferable that core layer 11 be made of a mixture of a hard acrylic resin and an acrylic elastomer, and that the mixing ratio be in the range of 95:5 to 70: 30.

In order to obtain sufficient weather resistance, it is preferable that 0.01 to 5 parts by weight of titanium oxide having an ultraviolet absorbing action be added as a light scattering agent to 100 parts by weight of the main material of the clad layer (12) in the light guide rod 1.

In addition, it is preferable that the light guide rod 1 has a light emission luminance of 3cd/m at a portion 4m away from the light source device 2 when light is incident from the light source device 2 having a driving power source 30mA, a luminous intensity of 20000mcd and a divergence angle of 20 ° at an end portion of the light guide rod 1 wound around the rope member 3, and the light guide rod 1 is used²The light guide rod.

In addition, the line of sight guiding target with a light guide bar may be configured by a plurality of support columns 5 provided on the road at a predetermined pitch to form a wire guard (in the present specification, the line guard includes not only a wire guard provided on a side road but also a wire guard provided on a central isolation belt), and in this case, the rope member 3 is stretched between the support columns 5 and 5, and the light source device 2 is attached to the support column 5 in a state of being mounted on an end portion of the peripheral surface light-emitting type light guide bar 1.

Effects of the invention

The sight line guide with a light guide rod according to the present invention uses a peripheral surface light-emitting light guide rod having excellent weather resistance, and therefore, not only can light be incident on the light guide rod from a light source device to linearly emit light from the light guide rod, but also the light-emitting performance can be maintained for a long time even when the sight line guide is used by being wound around a rope member (a wire rope guardrail, a ship mooring rope, or the like) for outdoor use.

In addition, in the present invention, since the light guide rod having appropriate bending elasticity is used, the light guide rod can be smoothly wound around the cord member without being damaged, and since the light guide rod is less likely to be loosened after winding, the light guide rod can be maintained in a state of being in close contact with the cord member. In the present invention, the selection of the light emission color and the light emission amount of the light guide rod are adjusted by the light source device, whereby the sight line can be effectively drawn.

Therefore, according to the present invention, it is possible to provide a sight line guide with a light guide rod which is excellent in a sight line guide function at night and in a dark place and is advantageous in terms of workability and weather resistance when used outdoors, and therefore the practical value of the present invention is extremely high.

Drawings

Fig. 1 is a side view and a cross-sectional view of a sight line guide with a light guide bar according to a first embodiment of the present invention.

Fig. 2 is an oblique view and a cross-sectional view showing a light guide rod and a light source device according to a first embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a modification of the cross-sectional shape of the light guide rod of the present invention.

Fig. 4 is a front view showing a column according to a second embodiment of the present invention.

Fig. 5 is an explanatory view showing a mounting structure of a light source device according to a second embodiment of the present invention.

Detailed Description

"first embodiment"

Next, a first embodiment of the present invention will be described with reference to fig. 1 to 2. In the figure, reference numeral 1 denotes a peripheral surface light-emitting light guide rod, and reference numeral 2 denotes a light source device. In addition, denoted by reference numeral 3 is a cord member, and denoted by reference numeral D is a sight line guide with a light guide rod.

[ constitution of Sight line guidance sign with light guide bar ]

[1] Basic constitution of sight line induction mark with light guide rod

In the present embodiment, as shown in fig. 1(a) (b) and 2(a) (b), the light source device 2 is mounted on the end of the peripheral surface light-emitting light guide rod 1, and the light guide rod 1 is wound around the rope member 3 formed by twisting the plurality of strands S and fixed, thereby forming the sight line guide D with the light guide rod. The light guide rod 1 is wound in close contact with the spiral valley portions V formed between the strands S and S on the outer periphery of the rope member 3.

As shown in fig. 2(a) and (b), light guide rod 1 is configured such that a cladding layer 12 is formed on the outer periphery of core layer 11 at the center, acrylic resin is used as the main material of core layer 11, and fluorine resin is used as the main material of cladding layer 12. The light guide rod 1 was configured such that the amount of change in luminance was within a range of. + -. 10% and the chromaticity [ x, y ] was within a range of 1000 hours in a test time using an accelerated weathering tester]The amount of change of each numerical value of (a) is within a range of. + -. 0.02, and the bending modulus of elasticity at-20 ℃ in an atmosphere of-20 ℃ is 0.5 to 5.0X 10³The mode of MPa constitutes the whole.

The rope member 3 is formed by twisting strands S · S … at a twist angle in the range of 10 ° to 20 °, and the spiral valley portions V are formed uniformly at a pitch in the range of 100mm to 200 mm. This prevents the light guide rod 1 wound around the cord member 3 and having a predetermined bending elasticity from being loosened and hanging downward. Further, even when the sight line guide D is used outdoors, the light guide rod 1 has excellent weather resistance, and therefore, there is no problem such as a short-term decrease in light emission performance.

[2] Light guide rod

[2-1] core layer Material

Next, each constituent element of the sight line guide D with the light guide bar will be described. First, in the light guide rod 1, in the present embodiment, the material of the core layer 11 is a mixture of a hard acrylic resin and an acrylic elastomer. This makes it possible to make light guide rod 1 emit light more uniformly, to wind it around cord member 3 easily, and to provide appropriate flexibility that is less likely to cause slack. The mixing ratio of the hard acrylic resin and the acrylic elastomer is preferably 95:5 to 70: 30.

As the hard acrylic resin of the core layer 11, one or more of polymethyl methacrylate, polyethyl methacrylate, isobutyl methacrylate, and n-butyl methacrylate can be suitably used. In the present specification, an acrylic resin having a glass transition temperature (Tg) of not less than room temperature (25 ℃) is referred to as "hard acrylic resin".

As the acrylic elastomer of the core layer 11, one or more of a block copolymer of methyl methacrylate and butyl acrylate (MMA-BA block copolymer) or a block copolymer of methyl acrylate and butyl acrylate, which is a thermoplastic elastomer, can be suitably used.

[2-2] shape of core layer

In addition, as for the shape of the core layer 11, a shape having a circular cross-sectional shape as shown in fig. 1 is used in the present embodiment, but a half oval shape of a fish cake shape as shown in fig. 3(a) and (b), a shape fitted in the valley portions V of the rope member 3, an oval shape, a semicircular shape, a polygonal shape, and the like may be used as the cross-sectional shape of the core layer 11.

[2-3] coating layer Material

As the main material of the coating layer 12 of the light guide rod 1, one or more of ethylene-tetrafluoroethylene copolymer (ETFE), hexafluoropropylene-tetrafluoroethylene-ethylene copolymer (EFEP), and polyvinylidene fluoride, which are fluorine-based resins, can be suitably used. By using a fluororesin having a small friction coefficient as the main material of the coating layer 12 in this way, the rope member 3 can be wound without being caught.

[2-4] shape of coating layer

The shape of the clad layer 12 may be formed to have a predetermined thickness on the outer periphery of the core layer 11, and may be formed of one layer as in the present embodiment, or may be formed of a plurality of clad layers 12 as shown in fig. 3 (c). The thickness of the coating layer 12 is preferably in the range of 0.1mm to 1.0 mm.

[2-5] light scattering agent

In the present embodiment, a light scattering agent having an ultraviolet absorbing action is added to the material of the clad layer 12 to improve weather resistance. Specifically, in the present embodiment, the powdery titanium oxide is used as the light scattering agent, and 0.01 to 5 parts by weight is added to 100 parts by weight of the base material of the coating layer 12. Barium sulfate other than titanium oxide may be used as the light scattering agent. In addition, the light scattering agent may be added not only to the clad layer 12 but also to the core layer 11.

[2-6] weather resistance of light guide rod

In addition, the weather resistance of the light guide rod 1 is preferably set such that the change amount of the luminance is within a range of ± 10% (preferably within a range of ± 5%) and the change amount of each numerical value of the chromaticity [ x, y ] is within a range of ± 0.02 (preferably within a range of ± 0.01) in a test time of 1000 hours using an accelerated weather resistance tester (Sunshine weather meter). The accelerated weather resistance test of the light guide rod 1 also yielded the same results even when the light guide rod was wound around a steel wire rope. Thus, even when used outdoors for a long time, the problem of a significant decrease in the amount of emitted light, discoloration, or the like does not occur.

[2-7] bending modulus of light guide rod

In addition, the bending elastic modulus of the light guide rod 1 is preferably 0.5 to 5.0 x 10³MPa (more preferably 2.0 to 4.0X 10)³MPa). This enables smooth winding of light guide rod 1 around cord member L even in cold regions, and light guide rod 1 after winding is less likely to be loosened. When the bending elastic modulus is too large, it is difficult to wind light guide rod 1 around rope member L while bending, and when the rope member L is forcibly wound, light guide rod 1 exceeds the elastic limit and breaks. On the other hand, when the bending modulus is too small, the light guide rod 1 is easily loosened after winding.

[2-8] light-emitting Properties of light-guiding bars

In addition, in this embodimentIn the embodiment, the light emitting brightness of the light guide rod 1 at the position 4m away from the light source device 2 when light is incident from the light source device 2 with the driving power source 30mA, the luminous intensity 20000mcd and the divergence angle 20 DEG at the end of the light guide rod 1 wound on the rope member 3 is 3cd/m²The above is used for the light guide rod 1.

[3] Light source device

In the light source device 2, a monochromatic LED light source is used in the present embodiment, and not only a monochromatic light emitting type light source device but also a multicolor light emitting type light source device may be used depending on the application. The light source device 2 may be mounted not only on one end of the light guide rod 1 but also on both ends, and LD, SLD, halogen lamps, and the like other than the LED light source may be used. The power supply to which the light source device 2 is connected may be an AC power supply or a DC power supply, and when used outdoors, a solar cell may be used.

[4] About rope members

Further, the rope member 3 around which the light guide rod 1 is wound is made of a metal wire in the present embodiment, but a carbon fiber wire, an aramid fiber wire, or a combination thereof may be suitably used. In addition to the steel cord, a thin rope or a thick rope made of natural fibers or synthetic resin fibers may be used as the rope member 3.

In the rope member 3, as shown in fig. 1(a) and (b), a wire rope having a diameter of 18mm (preferably 5mm to 50mm) formed by twisting 3 strands S · S … of a metal wire bundle is used in the present embodiment, but the thickness, number, and twist number of the strands S may be arbitrarily changed. Since the number, depth, width, and pitch of the spiral of the valley portions V formed vary depending on the thickness, number, and twist of the strands S, the number, thickness, and flexibility of the light guide rods 1 used need to be adapted to the rope members 3 used.

[5] Means for fixing light guide rod

In the present embodiment, the light guide rod 1 is fixed to the cord member 3 by the annular fixing tool 4, but the fixing tool 4 in a band shape may be wound around the cord member 3 from above the light guide rods 1 and 1 … to fix the cord member. As a means for fixing light guide rod 1, means such as adhesion may be used in addition to the method using fixing tool 4.

[6] For use in

Further, the use of the line-of-sight guide for a rope member can be suitably used for a rope for a wire guardrail (described later in detail), a mooring rope for a ship, a rope for a scaffold used in a construction site or the like, a rope for lighting, a rope for preventing invasion of vermin and birds used in the agricultural field, and a rope member used outdoors.

Second embodiment

Construction of steel cable guard rail "

[1] Basic construction of cable guard fence

Next, a second embodiment of the present invention will be described with reference to fig. 4 to 5. In the present embodiment, as shown in fig. 4, a rope member 3 is stretched between a plurality of support columns 5 and 5 … provided at a predetermined pitch on a road, a light guide rod 1 is spirally wound around the rope member 3, and a light source device 2 mounted on an end portion of the light guide rod 1 is attached to the support column 5, thereby constituting a cable guard G.

Thus, if the light source device 2 is activated, the light incident from the light source device 2 passes through the inside of the light guide rod 1, and the outer periphery of the light guide rod 1 emits light, so that the outer periphery of the rope member 3 can emit light spirally. Further, the spiral valley portions V of the cord member 3 can be used to easily wind and fix the light guide rod 1.

[2] About a pillar

In the present embodiment, the pillar 5 is a metal cylinder provided by embedding a base portion in a road, but may have a shape having a platform base for use in indoor installation. The shape of the support column 5 is not limited to a cylindrical shape, and a prismatic shape, or a shape in which a plurality of columns and prisms are joined and integrated, may be used.

[3] Mounting structure for light source device

In the present embodiment, the light source devices 2 and 2 … are attached to the battery fixed to the cover member C of the column 5 in a state where the cord member 3 is inserted through the column 5, as shown in fig. 5. Note that a structure in which a battery for DC power supply is fixed to the inner wall of the column 5 or a structure in which AC power supply is introduced into the column 5 may be employed. The light source device 2 may be externally provided to the column 5 together with the housing.

Examples

[ confirmation test of Effect ]

Next, a test for confirming the effect of the present invention will be described. First, in this test, a plurality of samples (examples 1 to 6 described below) were prepared in which the material of the core layer of the light guide rod was different, and the weather resistance and the bending modulus were evaluated for each of these samples. The production conditions of the samples of examples 1 to 6, the methods of the respective tests, and the results will be described below.

[ example 1]

In example 1, a peripheral surface emission type light guide rod having a circular cross-sectional shape and a diameter of 3.5mm (a core layer having a diameter of 3.1mm and a clad layer having a thickness of 0.2mm) was produced by co-extrusion. Further, polymethyl methacrylate as a hard acrylic resin was used as a main material of the core layer, and ETFE as a fluorine resin was used as a main material of the clad layer. In addition, 0.065 parts by weight of titanium oxide as a light scattering agent was added to the clad layer with respect to 100 parts by weight of the main material of the clad layer.

[ example 2]

In example 2, a circular rod-shaped peripheral surface emission type light guide rod having a diameter of 3.5mm (a core layer having a diameter of 3.1mm and a clad layer having a thickness of 0.2mm) was produced by co-extrusion in the same manner as in example 1. Further, as a main material of the core layer, a product obtained by mixing an MMA-BA block copolymer as an acrylic elastomer with polymethyl methacrylate as a hard acrylic resin at a weight ratio of 95:5 was used, and as a main material of the clad layer, ETFE as a fluorine-based resin was used. In addition, 0.065 parts by weight of titanium oxide as a light scattering agent was added to the clad layer with respect to 100 parts by weight of the main material of the clad layer.

[ example 3]

In example 3, a circular rod-shaped peripheral surface emission type light guide rod having a diameter of 3.5mm (a core layer having a diameter of 3.1mm and a clad layer having a thickness of 0.2mm) was produced by co-extrusion in the same manner as in example 1. Further, as a main material of the core layer, a product obtained by mixing an MMA-BA block copolymer as an acrylic elastomer with polymethyl methacrylate as a hard acrylic resin at a weight ratio of 90:10 was used, and as a main material of the clad layer, ETFE as a fluorine-based resin was used. In addition, 0.065 parts by weight of titanium oxide as a light scattering agent was added to the clad layer with respect to 100 parts by weight of the main material of the clad layer.

[ example 4]

In example 4, a circular rod-shaped peripheral surface emission type light guide rod having a diameter of 3.5mm (a core layer having a diameter of 3.1mm and a clad layer having a thickness of 0.2mm) was produced by co-extrusion in the same manner as in example 1. Further, as a main material of the core layer, a product obtained by mixing an MMA-BA block copolymer as an acrylic elastomer with polymethyl methacrylate as a hard acrylic resin at a weight ratio of 80:20 was used, and as a main material of the clad layer, ETFE as a fluorine-based resin was used. In addition, 0.065 parts by weight of titanium oxide as a light scattering agent was added to the clad layer with respect to 100 parts by weight of the main material of the clad layer.

[ example 5]

In example 5, a circular rod-shaped peripheral surface emission type light guide rod having a diameter of 3.5mm (a core layer having a diameter of 3.1mm and a clad layer having a thickness of 0.2mm) was produced by co-extrusion in the same manner as in example 1. Further, as a main material of the core layer, a product obtained by mixing an MMA-BA block copolymer as an acrylic elastomer with polymethyl methacrylate as a hard acrylic resin at a weight ratio of 70:30 was used, and as a main material of the clad layer, ETFE as a fluorine-based resin was used. In addition, 0.065 parts by weight of titanium oxide as a light scattering agent was added to the clad layer with respect to 100 parts by weight of the main material of the clad layer.

[ example 6]

In example 6, a circular rod-shaped peripheral surface emission type light guide rod having a diameter of 3.5mm (a core layer having a diameter of 3.1mm and a clad layer having a thickness of 0.2mm) was produced by co-extrusion in the same manner as in example 1. Further, as a main material of the core layer, MMA-BA block copolymer as an acrylic elastomer was used, and as a main material of the clad layer, ETFE as a fluorine-based resin was used. In addition, 0.065 parts by weight of titanium oxide as a light scattering agent was added to the clad layer with respect to 100 parts by weight of the main material of the clad layer.

< evaluation of weather resistance >

Next, for each sample having a length of 300mm of examples 1 to 6, the temperature of the black panel: weather resistance tests were carried out at 63 ℃ for 1000 hours using an accelerated weather resistance tester (Sunshine weather meter). Then, the chromaticity of the luminescent color before and after the test and the change rate of the chromaticity of the luminescent color before and after the test were examined for each sample, and as shown in the following tables 1 to 3, it was confirmed that the change amount of the luminance in 1000 hours of the test time was within the range of ± 10%, and the change amount of each numerical value of the chromaticity [ x, y ] was within the range of ± 0.02. In addition, it was confirmed that the change amount of the luminance was within a range of ± 5% and the change amount of each numerical value of the chromaticity [ x, y ] was within a range of ± 0.01 for 1000 hours in the test time for the samples of examples 1 to 4.

[ Table 1]

[ Table 2]

[ Table 3]

< evaluation of bending modulus and bending stress >

Each of the samples of examples 1 to 6 was tested at 23 ℃ and-20 ℃ in an atmosphere based on a bending test method of a laminated rod according to JIS K6911 (general test method for thermosetting plastics) 5.17.3. As a result, as shown in the following table, it was confirmed that the bending modulus of each of the samples of examples 1 to 6 was in the range of 0.5 to 5.0X 10 under an atmosphere of-20 ℃³In the MPa range. In addition, it was confirmed that the bending modulus of each of the samples of examples 1 to 5 was within a range of 2.0 to 4.0X 10 under an atmosphere of-20 ℃³In the MPa range.

[ Table 4]

< evaluation of light-emitting Property of light guide Bar >

Next, with respect to the light guide rods of examples 1 and 2, the light emission luminance of a portion 4m away from the light source device when light is incident from the light source device having a driving power supply 30mA, a luminous intensity 20000mcd, and a divergence angle of 20 ° at the end of the light guide rod wound around the rope member was measured. As a result, the light-emission luminance of example 1 was 5.1cd/m²The light-emission luminance of example 2 was 3.6cd/m²。

Description of the reference numerals

1 light guide bar

11 core layer

12 coating layer

2 light source device

3 rope component

4 fixing tool

5 support post

D line of sight induction

S rope strand