Self-light emitting sheet

Abstract

To provide a self-light emitting sheet that enables an emitter and circuit thereof and a protective member to be attached to a sheet base material without requiring time and labor, and enables only a failed or damaged part to be replaced by removing the emitter, the circuit, or the protective member from the sheet base material even if the emitter or the circuit fails or the protective member is damaged.SOLUTION: A self-light emitting sheet 1 is fitted to an object installed on a road. The self-light emitting sheet 1 comprises: a sheet body 10; a light-emitting unit 20 having light emitters 21 to 27, a light-emitting circuit and control part 28e to make the light emitters 21 to 27 emit light, a solar cell 28b to supply power to the light-emitting circuit and control part 28e, and a storage battery 28d; and caps 31 to 37 to cover the light emitters 21 to 27. The light-emitting unit 20 is detachably fitted to the sheet body 10.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a self-luminous sheet that can be attached to various objects installed on roads, such as road signs, cushion drums, cones, and display boards. [Background technology]

[0002] Currently, various objects such as road signs, cushion drums, cones, and signs are installed on roads (and their surrounding areas) to ensure traffic safety. These objects are often labeled with letters, symbols, pictures, and the like, and also have illuminators attached to them so that they can be seen even at night. In this case, various proposals have been made from the viewpoint of allowing the display contents to be easily changed, or allowing easy repair or replacement when the illuminant breaks down.

[0003] For example, Patent Document 1 (JP 2000-10512 A) discloses a light-emitting diode-mounted display board cover, which is a cover made of a transparent material that is attached to a display board such as a road sign, and in which a display is formed in the form of letters, figures, symbols, etc. by arranging multiple light-emitting diodes. In the light-emitting diode-mounted display plate cover of Patent Document 1, a transparent polyester sheet 9 has appropriate through holes 10 drilled therein, a transparent ring 11 made of hard plastic fixed to the through holes 10, and the head of the light-emitting diode is fitted into the ring 11 (Paragraph

[0051] of Patent Document 1). It is also disclosed that the ring 11 may be formed in a donut shape, and that a transparent protective sheet 13 may be attached to the front side of the light-emitting diode 4 (Paragraph

[0054] of the same document). However, when light-emitting diodes are attached to a polyester sheet as in the light-emitting diode-mounted display plate cover of Patent Document 1, if the light-emitting diode-mounted display plate cover is attached to an object that is subject to external impact, such as a cushion drum, the light-emitting diodes are easily damaged, and if damaged, the entire light-emitting diode-mounted display plate cover must be replaced, which is a problem. Furthermore, the LED mounting display plate cover of Patent Document 1 is made of a transparent material and does not have any printed markings such as letters, symbols, or pictures, so there is the problem that it can only be attached to objects that have such markings printed on them in advance.

[0004] Next, Patent Document 2 (JP 2000-172205 A) discloses a film- or plate-shaped light-emitting device comprising a film- or plate-shaped substrate, an electric circuit provided on the substrate, a power supply unit electrically connected to the electric circuit, and one or more light sources provided at a predetermined interval on or in close proximity to the electric circuit and electrically connected to the electric circuit, the light sources blinking randomly or regularly in response to a signal from the power supply unit. In the film-like or plate-like light-emitting device of Patent Document 2, a flat round LED or a cylindrical LED is used as the light source. In the case of a flat round LED, the LED is covered with a cover case, but the LED itself has no strength, and in the case of a cylindrical LED, the LED protrudes from the bar case. In either case, when the film-like or plate-like light-emitting device is attached to an object that is subjected to external impact, such as a cushion drum, there is a problem that the LED is easily damaged, just like in Patent Document 1. Furthermore, in the film- or plate-shaped light-emitting device of Patent Document 2, since an electrical circuit is provided on the film- or plate-shaped substrate, if the LED is damaged, there is a problem that the entire film- or plate-shaped light-emitting device needs to be replaced, just as in Patent Document 1. In addition, like Patent Document 1, the film- or plate-shaped light-emitting device of Patent Document 2 does not have any printed markings such as letters, symbols, or pictures, and therefore has the problem that it cannot be attached to various objects and used as a warning sheet with symbols or pictures.

[0005] In this regard, Patent Document 3 (JP 2016-172987 A) discloses a cone cover 10 in which a plurality of light-emitting units 20 are attached to a cover member 11 that covers a tapered outer peripheral surface 93 of a cone body 91 of a cone 90, the cover member 11 having a double structure of an outer sheet 11A and an inner sheet 11B, the outer surface of the outer sheet 11A being covered, for example, almost entirely with a reflective material and coated with a transparent resin for waterproofing, and the outer surface of the outer sheet 11A being provided with a striped pattern in which strip-shaped regions of different colors are arranged alternately above and below, the light-emitting unit 20 being formed by housing a strip-shaped substrate 21 in a transparent substrate case 23, the strip-shaped substrate 21 being in the form of a long, narrow strip, and having a plurality of LEDs 22 mounted thereon in a row in the longitudinal direction, a transparent unit case 27 being fixed to the outer surface of the cover member 11, the unit case 27 being in the form of a groove capable of housing the entire light-emitting unit 20, and the cone cover 10 in which the light-emitting unit 20 is housed in the unit case 27. However, in the cone cover of Patent Document 3, the unit case 27 that houses the entire light-emitting unit 20 is fixed to the outer surface of the cover member 11 (the flange portion 27F of the unit case 27 is welded to the outer surface of the cover member 11), which not only takes time and effort to attach the light-emitting unit 20 and the unit case 27 to the cone cover 10, but also creates the problem that if the cone with the cone cover attached receives a strong impact in a car collision, etc., causing the light-emitting unit to break down or the unit case 27 to become damaged, the entire cone cover must be replaced, resulting in a waste of the cover member. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2000-10512 A [Patent Document 2] JP 2000-172205 A [Patent Document 3] JP 2016-172987 A Summary of the Invention [Problem to be solved by the invention]

[0007] The problem that the present invention aims to solve is to provide a sheet having an illuminant attached thereto that is attached to various objects placed on roads and protected by a protective member that can withstand external impacts, whereby the illuminant, its circuit and protective member can be attached to a sheet base material without any trouble, and even if the illuminant or circuit breaks down or the protective member is damaged, the illuminant, circuit or protective member can be removed from the sheet base material and only the broken or damaged parts can be replaced. [Means for solving the problem]

[0008] The invention of claim 1 solves the above-mentioned problems by providing a self-illuminating sheet to be attached to an object installed on a road, the self-illuminating sheet comprising a sheet body, a light-emitting unit having a light-emitting body, a light-emitting circuit and control unit that causes the light-emitting body to emit light, and a power source that supplies electricity to the light-emitting circuit and control unit, and a protective member that protects the light-emitting body, the light-emitting unit being removably attached to the sheet body.

[0009] The invention of claim 2 solves the above-mentioned problem by providing a self-illuminating sheet in which the protective member is removably attached to the light-emitting body.

[0010] The invention of claim 3 solves the above problem by providing a self-luminous sheet in which the light-emitting body comprises an LED and an LED storage case that houses the LED, and the protective member is a cap that is removably placed over the LED storage case.

[0011] The invention of claim 4 solves the above problem by providing a self-illuminating sheet in which a portion of the LED storage case protrudes from the base sheet and the light-emitting unit is attached to the sheet body by covering the portion of the LED storage case protruding from the sheet body with the cap.

[0012] The invention of claim 5 solves the above problem by providing a self-luminous sheet in which the LED storage case and the cap are provided with anti-detachment means for preventing the cap, which covers a part of the LED storage case, from coming off the LED storage case.

[0013] The invention of claim 6 solves the above problem by providing a self-illuminating sheet in which a first convex portion and a first projection are provided on the outer peripheral surface of the LED storage case, a second convex portion and a second protrusion are provided on the inner peripheral surface of the cap, and the anti-detachment means is formed by the second convex portion fitting into a recess formed by the first convex portion and the first protrusion engaging with the second protrusion.

[0014] The invention of claim 7 solves the above-mentioned problems by providing a self-luminous sheet in which the power source is a solar cell and a storage battery.

[0015] The invention of claim 8 solves the above-mentioned problem by providing a self-luminous sheet, the sheet body having a sheet base material, a reflective sheet attached to the sheet base material, and an object attachment part for attaching the sheet base material to the object, the object being a cushion drum, and the object attachment part being a belt for wrapping and fixing the sheet base material around the cushion drum.

[0016] The invention of claim 9 solves the above problem by providing a self-illuminating sheet in which the reflective sheet forms an attention-grabbing pattern and the illuminant is positioned in a part of the sheet base material where the reflective sheet is not present so as to emphasize the pattern.

[0017] The invention of claim 10 solves the above-mentioned problems by providing a self-illuminating sheet in which the sheet body is a metal display plate. Effect of the Invention

[0018] The self-luminous sheet of the invention described in claim 1 has the advantage that it is not time-consuming to attach the light-emitting unit to the sheet body, and even if the light-emitting unit breaks down, the light-emitting unit can be removed from the sheet body and replaced.

[0019] The self-luminous sheet of the invention as recited in claim 2 has a further advantage that even if the protective member is damaged, only the damaged protective member can be replaced.

[0020] In the self-luminous sheet of the invention described in claim 3, the LED is further stored in an LED storage case and a cap is removably placed over the LED storage case, thereby providing the effect that the LED is protected by the LED storage case and the cap, and even if the cap is damaged, only the damaged cap can be replaced.

[0021] In the self-luminous sheet of the invention described in claim 4, further, by making a portion of the LED storage case protrude from the sheet body and covering the portion of the LED storage case protruding from the sheet body with a cap, the light-emitting unit can be easily attached to the sheet body, thereby achieving the effect that even if the LED breaks down, the light-emitting unit can be easily replaced from the sheet body.

[0022] In the self-luminous sheet of the invention described in claim 5, furthermore, the anti-detachment means prevents the cap from coming off the LED storage case, thereby providing the effect that the light-emitting unit is less likely to fall off the sheet body.

[0023] The self-illuminating sheet of the invention described in claim 6 further has the effect of making it difficult for the optical unit to fall off from the sheet body by a simple structure in which the second convex portion is fitted into a concave portion formed by the first convex portion and the first protrusion and the second protrusion are engaged with each other.

[0024] The self-luminous sheet of the invention described in claim 7 further has the advantage that electricity generated by the solar cell can be stored in a storage battery during the day and supplied to the light-emitting unit from the storage battery at night, thereby enabling electricity to be supplied to the light-emitting unit without using a commercial power source.

[0025] The self-luminous sheet of the invention described in claim 8 further has the effect that the self-luminous sheet can be easily attached to a cushion drum, and the reflective sheet reflects light emitted from the vehicle headlights, making the driver of the vehicle aware of the presence of the cushion drum.

[0026] In the self-luminous sheet of the invention described in claim 9, the reflective sheet further forms a pattern that attracts attention, and the illuminants are positioned so as to emphasize the pattern on the reflective sheet, thereby achieving the effect of further attracting the viewer's attention.

[0027] The self-luminous sheet of the invention as recited in claim 10 has a further effect that the self-luminous sheet itself can be used as a display panel. [Brief description of the drawings]

[0028] [Figure 1] FIG. 1 is a perspective view of a self-luminous sheet of the present invention. [Diagram 2] FIG. 2 is a plan view of the self-luminous sheet shown in FIG. [Diagram 3] FIG. 2 is a front view of the self-luminous sheet shown in FIG. [Figure 4] FIG. 2 is a rear view of the self-luminous sheet shown in FIG. [Diagram 5] FIG. 2 is an exploded perspective view of the self-luminous sheet shown in FIG. [Figure 6] 2 is a perspective view of a light-emitting body 21 and a cap 31 in the self-luminous sheet 1. FIG. [Figure 7] 7A to 7C are a left side view, a front view, and a plan view of the light emitter 21 shown in FIG. [Figure 8] 8A and 8B are cross-sectional views taken along lines AA, BB, and CC in FIG. 7. [Figure 9]7A and 7B are a front view, a rear view, and a DD cross-sectional view of the cap 31 shown in FIG. 6. [Figure 10] 10 is an explanatory diagram illustrating a state in which a cap 31 is placed on a protruding portion 21b of a light emitter 21. FIG. [Figure 11] FIG. 13 is an exploded perspective view of a self-illuminating sheet in which, instead of the light-emitting body 21 and the cap 31, other light-emitting bodies and caps are attached. [Figure 12] 12A and 12B are front and rear views of the light-emitting body cap and its vicinity in the self-illuminating sheet shown in FIG. 11. [Figure 13] FIG. 13 is a plan view of the light-emitting body cap and its vicinity shown in FIG. 12. [Figure 14] FIG. 13 is a cross-sectional view of FIG. 12 in accordance with II. [Figure 15] 2 is a block diagram showing a control configuration of the light-emitting unit 20. FIG. [Figure 16] FIG. 2 is a perspective view of a state in which the self-luminous sheet 1 is attached to a cushion drum. [Figure 17] FIG. 11 is a perspective view of another example of the self-luminous sheet. [Figure 18] 18 is a plan view, a front view, and a back view of the self-luminous sheet shown in FIG. 17. [Figure 19] FIG. 18 is an exploded perspective view of the self-luminous sheet shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] [Self-luminous sheet configuration] FIG. 1 is an oblique view of the self-luminous sheet of the present invention, FIG. 2 is a plan view of the self-luminous sheet shown in FIG. 1, FIG. 3 is a front view of the self-luminous sheet shown in FIG. 1, FIG. 4 is a rear view of the self-luminous sheet shown in FIG. 1, and FIG. 5 is an exploded oblique view of the self-luminous sheet shown in FIG. 1. In the figure, 1 is a self-luminous sheet, 10 is a sheet body, 11 is a sheet base material, 12a, 12b, 12c, 12d, and 12e are reflective sheets, 13a, 13b, 14a, 14b, 15a, and 15b are belts, 13c, 14c, and 15c are clasps, 20 is a light-emitting unit, 21, 22, 23, 24, 25, 26, and 27 are light-emitting bodies, 28 is a power supply / control device, and 28a is In the drawings, X is the left-right direction, Y is the front-back direction, and Z is the up-down direction. As shown in the figure, the self-luminous sheet 1 includes a sheet body 10, a light-emitting unit 20, and caps 31-37.

[0030] [Sheet body] The sheet member 10 includes a rectangular sheet substrate 11, reflective sheets 12a to 12e, and belts 13a, 13b, 14a, 14b, 15a, and 15b. The sheet substrate 11 is made of tarpaulin, which is a multi-layered vinyl chloride material, and is made of a sheet in which PVC resin is laminated on both sides of a woven synthetic fiber fabric such as polyester or nylon. As shown in FIG. 5, seven through holes h11 to h17 forming a V shape are provided in the center of the sheet base 11 in a portion where the reflective sheets 12a to 12c are not attached. The reflective sheets 12a to 12e are made of an encapsulated type reflective sheeting that uses a transparent, tough surface plastic film and highly refractive microscopic glass beads in the resin, or an encapsulated lens type retroreflective sheeting that is made of a special weather-resistant plastic and extremely small glass beads, a reflective film, an adhesive, etc. In this case, as shown in Figure 3, an inverted triangular reflective sheet 12a is attached to the upper center of the front surface of the sheet base material 11 with an adhesive or the like, parallelogram-shaped reflective sheets 12b and 12c are attached to the front surface of the sheet base material 11 from the upper end to the lower end with an adhesive or the like to form a V shape, and right-angled triangular reflective sheets 12d and 12e are attached to the outside of the V shape with an adhesive or the like. As a result, the reflective sheets 12a to 12e form a pattern (design) that attracts the viewer's attention. Belts 13a etc. are made of the same tarpaulin as sheet base material 11, and belts 13a, 13b, 14a, 14b are welded to the four corners on the front side of sheet base material 11, and belts 15a, 15b are welded to the upper left and right ends on the back side of sheet base material 11. The non-welded ends of the belts 13b, 14b, and 15b are fitted with clasps 13c, 14c, and 15c, respectively. Instead of attaching the reflective sheets 12a to 12e to the sheet base material 11, the patterns of the reflective sheets 12a to 12e may be directly printed on the sheet base material 11.

[0031] [Light emitting unit 20 etc.] The light emitting unit 20 includes light emitting members 21 to 27, a power supply / control device 28, and electric wires (cables) EW1 to EW7, and the light emitting members 21 to 27 are covered with caps 31 to 37, respectively. Figure 6 is an oblique view of the light-emitting body 21 and cap 31 in the self-luminous sheet 1, Figure 7(a) is a left side view of the light-emitting body 21 shown in Figure 6, Figure 7(b) is a front view of the light-emitting body 21 shown in Figure 6, Figure 7(c) is a plan view of the light-emitting body 21 shown in Figure 6, Figure 8(a) is an AA cross-sectional view of Figure 7(b), Figure 8(b) is a BB cross-sectional view of Figure 7(c), Figure 8(c) is a CC cross-sectional view of Figure 7(c), Figure 9(a) is a front view of the cap 31 shown in Figure 6, Figure 9(b) is a back view of the cap 31 shown in Figure 6, and Figure 9(c) is a DD cross-sectional view of Figure 9(b). In the figure, 21a is a flange portion, 21b is a protruding portion, 21c1, 21c2, 21c3, and 21c4 are first convex portions, 21d1, 21d2, 21d3, and 21d4 are first projections, 21e is an LED, 21f is an LED substrate, 21g1 and 21g2 are lead frames, 21k is a space, 31a is a front surface portion of the cap, 31b is a cap main body portion, 31c1, 31c2, 31c3, and 31c4 are second convex portions, and 31d1, 31d2, 31d3, and 31d4 are second projections. The light emitting body 21 is composed of a flange portion 21a, a cylindrical protruding portion 21b, a bullet-shaped LED 21e, an LED substrate 21f, lead frames 21g1 and 21g2, and the like. The flange portion 21a and the protruding portion 21b are made of plastic and are integrated together to form the LED storage case of the present invention. Four L-shaped first convex portions 21c1 to 21c4 and short linear first projections 21d1 to 21d4 are provided on the outer circumferential surface of the protruding portion 21b. Each of the first convex portions 21c1 to 21c4 is composed of a wide portion on the front side and a narrow portion on the rear side, and each of the first projections 21d1 to 21d4 is provided in a portion surrounded by the wide portion, the narrow portion, and the flange portion 21a. Moreover, a space 21k for accommodating the LED 21e and the like is formed inside the protruding portion 21b.

[0032] The LED 21e is an LED element, an anode, a cathode, and bonding wires (not shown) sealed in resin, and the LED substrate 21f is a base to which a printed circuit board (not shown) is fixed. The LED 21c and the LED substrate 21f are connected by lead frames 21g1 and 21g2. The cap 31 is a plastic cylindrical body that is placed over the light-emitting body 21 to serve as a protective member of the present invention, and is composed of a cap front portion 31a and a cap main body portion 31b that are integrally molded. The cap front surface portion 31a is provided with a hole into which the front portion of the protruding portion 21b of the light emitter 21 is fitted. An insertion hole is provided in the axial direction (Y direction) of the cap main body 31b, and four second convex portions 31c1-31c4 are provided at equal intervals on the inner circumferential surface thereof, and short linear second projections 31d1-31d4 are provided adjacent to each of the second convex portions 31c1-31c4. Then, the protrusion 21b of the light-emitting body 21 is inserted from the back side into the through hole h11 provided in the sheet base material 11 and protrudes toward the front side of the sheet base material 11, the protruding protrusion 21b is covered with a cap 31, the second protrusions 31c1-31c4 are engaged with the recesses on the outer peripheral surface of the protrusion 21b formed by the first protrusions 21c1-21c4, the second projections 31d1-31d4 are engaged with the first projections 21d1-21d4, and the sheet base material 11 is sandwiched between the cap 31 and the flange portion 21a of the light-emitting body 21, thereby attaching the light-emitting body 21 to the sheet base material 11. The protrusion 21b and the cap 31 are white, and emit the light emitted by the LED 21e to the outside. In addition, a packing (not shown) is attached between the front surface of the sheet base material 11 and the rear surface of the cap 31 to prevent rainwater and the like from entering the space 21k.

[0033] Figure 10 is an explanatory diagram illustrating the state in which the cap 31 is placed on the protrusion 21b of the light-emitting body 21, where Figure 10(a) is a plan view of the state in which the cap main body 31b is inserted into the protrusion 21b, Figure 10(b) is a plan view of the state in which the cap main body 31b is rotated to engage the first protrusions 21d1-21d4 with the second protrusions 21d1-21d4, Figure 10(c) is an EE cross-sectional view of Figure 10(a), Figure 10(d) is an FF cross-sectional view of Figure 10(b), Figure 10(e) is a GG cross-sectional view of Figure 10(a), and Figure 10(f) is an HH cross-sectional view of Figure 10(b). In the drawing, 21s1, 21s2, 21s3, and 21s4 are gaps, and the sheet base material 11 is omitted in the drawing. Regarding the relationship between the outer diameter of the protrusion 21b to the first convex portions 21c1-21c4 of the light-emitting body 21, the outer diameter of the cap main body portion 31b, and the hole diameter of the cap front surface portion 31a, the outer diameter of the first convex portions 21c1-21c4 of the protrusion 21b is slightly smaller than the inner diameter of the cap main body portion 31b and slightly larger than the hole diameter of the cap front surface portion 31a, and the outer diameter of the protrusion 21b (the portion without the first convex portions 21c1-21c4) is slightly smaller than the inner diameter of the second convex portions 31c1-31c4 of the cap main body portion 31b and slightly smaller than the hole diameter of the cap front surface portion 31a (slightly smaller than the inner diameter of the cap main body portion 31b). That is, the size of each part is as follows: Outer diameter of protrusion 21b<hole diameter of cap front surface portion 31a<inner diameter of second protrusions 31c1 to 31c4<outer diameter of first protrusions 21c1 to 21c4<inner diameter of cap body portion 31b As a result, when the cap 31 is placed over the protrusion 21b of the light-emitting body 21, the cap 31 is able to move in the front-to-back and circumferential directions, but the wide portions of the first convex portions 21c1-21c4 come into contact with the surrounding area of ​​the hole in the cap front surface portion 31a, restricting movement in the front-to-back directions, and the second convex portions 31c1-31c4 come into contact with the narrow portions of the first convex portions 21c1-21c4, restricting movement in the front-to-back directions.

[0034] Now, as shown in FIGS. 10(a), (c) and (e), the cap body 31b is inserted into the protruding portion 21b of the light emitter 21 and pushed in to the maximum extent. At this time, the second convex portions 31c1-31c4 and the second projections 31d1-31d4 of the cap main body portion 31b pass between the wide portions of the first convex portions 21c1-21c4 of the protruding portion 21b and are positioned between the narrow portions of the first convex portions 21c1-21c4, and the surrounding portions of the hole in the cap front surface portion 31a come into contact with the front surfaces of the wide portions of the first convex portions 21c1-21c4. When the cap 31 is rotated clockwise in this state, the second convex portions 31c1 to 31c4 are fitted into the concave portions surrounded by the wide and narrow portions of the first convex portions 21c1 to 21c4 and the flange portion 21a (the front side of the substrate 11), as shown in Figs. 10(b), (d), and (f), and the second projections 31d1 to 31d4 climb over the first projections 21d1 to 21d4 (the second projections 31d1 to The contact portions of the second protrusions 31d1 and 31d4 with the first protrusions 21d1 to 21d4 are deformed, and the second protrusions 31d1 and 31d4 are positioned in the gaps 21s1 to 21s4 formed between the first protrusions 21d1 to 21d4 and the first convex portions 21c1 to 21c4 (the second protrusion 31d1 is positioned in the gap 21s1, the second protrusion 31d2 is positioned in the gap 21s2, the second protrusion 31d3 is positioned in the gap 21s3, and the second protrusion 31d4 is positioned in the gap 21s4). As a result, the second protrusions 31d1-31d4 engage with the first protrusions 21d1-21d4, restricting the cap 31 from rotating counterclockwise, and the second convex portions 31c1-31c4 come into contact with the wide portions of the first convex portions 21c1-21c4, restricting the cap 31 from moving forward, and preventing the cap 31 from coming off the protrusion 21b.

[0035] The other light-emitting bodies 22 to 27 have the same structure as the light-emitting body 21, and are composed of a flange, a protrusion, an LED, an LED substrate, a lead frame, etc., and the outer peripheral surface of the protrusion is provided with four L-shaped first convex portions and four short linear first protrusions. The other caps 32 to 37 have the same structure as cap 31, and consist of an integrally molded cap front portion and cap main body portion, the cap front portion is provided with a hole into which the front portion of the light emitter 22 to 27 is fitted, and four second convex portions are provided at equal intervals on the inner surface of an insertion hole provided in the axial direction of the cap main body portion, and a short linear second protrusion is provided adjacent to each second convex portion. Then, in the same manner as the light-emitting body 21, each of the protrusions of the light-emitting bodies 22-27 is inserted from the back side into each of the through holes h12-h17 provided in the sheet base material 11 and protrudes toward the front side of the sheet base material 11, each of the protruding protrusions is covered with a cap 32-37, a second protrusion is fitted into a recess on the outer peripheral surface of each protrusion formed by the first protrusion, the second protrusion is engaged with the first protrusion, and the sheet base material 11 is sandwiched between each of the caps 32-37 and the flange portion of each of the light-emitting bodies 22-27, thereby attaching each of the light-emitting bodies 22-27 to the sheet base material 11. In this case, the V-shape formed by the light emitting bodies 21 to 27 is designed to emphasize the pattern (design) formed by the reflective sheets 12a to 12e.

[0036] The electric wires EW1 to EW7 are electric wires that supply electricity from the power supply / control device 28 to the LEDs (LED elements) of the light emitters 21 to 27, causing the LEDs (LED elements) to emit light. As shown in FIG. 4 , one end of the electric wire EW1 is connected to the power supply / control device 28, the other end of the electric wire EW1 is connected to the light-emitting body 21, one end of the electric wire EW2 is connected to the light-emitting body 21, the other end of the electric wire EW2 is connected to the light-emitting body 22, one end of the electric wire EW3 is connected to the light-emitting body 22, the other end of the electric wire EW3 is connected to the light-emitting body 23, one end of the electric wire EW4 is connected to the light-emitting body 23, the other end of the electric wire EW4 is connected to the light-emitting body 24, one end of the electric wire EW5 is connected to the light-emitting body 24, the other end of the electric wire EW5 is connected to the light-emitting body 25, one end of the electric wire EW6 is connected to the light-emitting body 25, the other end of the electric wire EW6 is connected to the light-emitting body 26, one end of the electric wire EW7 is connected to the light-emitting body 26, and the other end of the electric wire EW7 is connected to the light-emitting body 27. As shown in FIG. 8(a) and other figures, in the light emitting body 21, the other end of the electric wire EW1 and one end of the electric wire EW2 are passed through the flange portion 21a and connected (conducted) to the printed circuit board of the LED board 21f. As with the light emitting body 21, in the other light emitting bodies 22 to 27, one end of the electric wire adjacent to the other end of each electric wire is passed through the flange of each light emitting body 22 to 27 and connected (conducted) to the printed circuit board of the LED board. The electric wires EW1 and EW2 supply electricity to the LEDs 21e to cause the LED elements to emit light. One end of the electric wire EW1 is passed through the flange portion 21a and connected (conductive) to the printed circuit board of the LED board 21f. The other electric wires EW2·EW3 to EW6·EW7, like the electric wires EW1 and EW2, supply electricity to the LEDs of each of the light-emitting bodies 22 to 27 to cause the LED elements to emit light, and are passed through the flange portions of each of the light-emitting bodies 22 to 27 and connected (conductive) to the printed circuit board of the LED substrate.

[0037] [Other examples of luminous bodies and caps] Figure 11 is an exploded oblique view of a self-luminous sheet in which other light-emitting bodies and caps are attached instead of the light-emitting body 21 and cap 31, Figures 12(a) and (b) are a front view and a rear view of the light-emitting body and cap and their surroundings in the self-luminous sheet shown in Figure 11, Figure 13 is a plan view of the light-emitting body and cap shown in Figure 12 and their surroundings, and Figure 14 is a cross-sectional view II of Figure 12. In the figure, 21', 22', 23', 24', 25', 26', and 27' are light-emitting bodies, 21'a is a flange portion, 21'b is a protrusion portion, 21'e is an LED, 21'f is an LED substrate, 21'g1 and 21'g2 are lead frames, 21'k is a space, 21'n is a male thread portion, 31', 32', 33', 34', 35', 36', and 37' are caps, and 31'n is a female thread portion. The light emitting body 21' is composed of a flange portion 21'a, a cylindrical protruding portion 21'b, a bullet-shaped LED 21'e, an LED substrate 21'f, lead frames 21'g1 and 21'g2, and the like. The flange portion 21'a and the protrusion portion 21b' are made of plastic, like the flange portion 21a and the protrusion portion 21b of the light-emitting body 21, and are integrated to form the LED storage case of the present invention, with a space 21'k formed inside the protrusion portion 21'b and a male screw portion 21'n provided on the outer surface of the protrusion portion 21'b. Like the LED21e of the light-emitting body 21, the LED21'e is an LED element, an anode, a cathode, and bonding wires, etc. (not shown) encapsulated in resin, and the LED substrate 21'f is a base to which a printed circuit board (not shown) is fixed, and the LED21'e and the LED substrate 21'f are connected by lead frames 21'g1 and 21'g2. The cap 31' is a plastic cylindrical body that is fitted over the light-emitting body 21' to serve as a protective member of the present invention, with an insertion hole provided in its axial direction (Y direction) and a female screw portion 31'n provided on its inner peripheral surface. Then, the protrusion 21'b of the light-emitting body 21' is inserted from the back side into the through hole h11 provided in the sheet base material 11 and protrudes toward the front side of the sheet base material 11, a cap 31' is placed on the protruding protrusion 21'b and the male threaded portion 21'n is screwed into the female threaded portion 31'n, and the light-emitting body 21' is attached to the sheet base material 11 by sandwiching the sheet base material 11 between the cap 31' and the flange portion 21'a of the light-emitting body 21'. In this case, the female screw portion 31'n is screwed into the male screw portion 21'n, thereby preventing the cap 31' from coming off the light emitting body 21', thereby forming the removal prevention means of the present invention. The protrusion 21'b and the cap 31' are white, and emit the light emitted by the LED 21'e to the outside. Furthermore, a packing (not shown) is attached between the front surface of the sheet substrate 11 and the rear surface of the cap 31' to prevent rainwater and the like from entering the space 21'k.

[0038] The other light emitters 22' to 27' have the same structure as the light emitter 21', and are composed of a flange, a protrusion, an LED, an LED substrate, a lead frame, and the like. The other caps 32' to 37' have the same structure as the cap 31', and a female screw portion is provided on the inner peripheral surface of an insertion hole provided in the axial direction. Then, similarly to light-emitting body 21', each protrusion of light-emitting bodies 22'-27' is inserted from the back side into each of the through holes h12-h17 provided in sheet base material 11 and protrudes toward the front side of the sheet base material 11, each protruding portion is covered with a cap 32'-37' and each female threaded portion is screwed into each male threaded portion, and each light-emitting body 22'-27' is attached to the sheet base material 11 by sandwiching the sheet base material 11 between each cap 32'-37' and the flange portion of each light-emitting body 22'-27'. In this case, the V-shape formed by the light emitting bodies 21' to 27' emphasizes the pattern (design) formed by the reflective sheets 12a to 12e. Similarly to the light emitters 21-27, the light emitters 21'-27' are connected to the power supply / control device 28 via electric wires EW1-EW7.

[0039] FIG. 15 is a block diagram showing the control configuration of the light-emitting unit 20, in which 28d is a storage battery, 28e is a light-emitting circuit / control unit, and LE1, LE2, LE3, LE4, LE5, LE6, LE7, and LE8 are LED elements. The power supply / control device 28 includes a solar cell 28b, an LED 28c, a storage battery 28d, a light emitting circuit / control unit 28e, a power switch (not shown), etc., which are housed in a box 28a, and the solar cell 28b and the storage battery 28d serve as the power source of the present invention. Solar cell 28b is composed of a solar panel or the like attached to the upper surface of box 28a. During the day, the solar panel receives sunlight and generates electricity, which is then supplied to storage battery 28d. The LED 28c is attached next to the solar panel on the top surface of the box 28a, and when the power switch of the power supply / control device 28 is turned on and the voltage of the storage battery 28d is above a predetermined value, the LED element LE8 lights up or flashes, functioning as a remaining battery charge indicator for the storage battery 28d. The storage battery 28d stores the electricity generated by the solar cell 28b, and supplies the stored electricity to the light-emitting circuit / control unit 28e. The light-emitting circuit / control unit 28e consists of a light-emitting circuit that supplies electricity from the storage battery 28d to the light-emitting elements 21-27 and a control unit that controls the electricity supplied to this light-emitting circuit, and causes the LED elements LE1-LE7 ​​of the light-emitting elements 21-27 to light up or blink in a predetermined pattern. During the day, the power switch of the power supply / control device 28 is turned OFF, the solar cell 28b generates electricity and stores it in the storage battery 28d, and at night, the power switch of the power supply / control device 28 is turned ON, and the LED elements LE1 to LE7 of the light-emitting bodies 21 to 27 light up or blink in a predetermined pattern. This makes it possible to cause the LED elements LE1 to LE7 of the light emitters 21 to 27 to emit light without using a commercial power source. In the self-illuminating sheet using the light-emitting bodies 21' to 27', similarly to the light-emitting bodies 21 to 27 of the self-illuminating sheet 1, the LED elements of the light-emitting bodies 21' to 27' light up or blink in a predetermined pattern.

[0040] [How to use the self-luminous sheet 1] FIG. 16 is a perspective view of the self-luminous sheet 1 attached to a cushion drum, and in the figure, reference numeral 40 denotes the cushion drum. The cushion drum 40 is a cylindrical, round cushion drum made of plastic such as polyethylene and filled with liquid. It is placed in front of facilities on the road to prevent vehicles from directly colliding with the facilities, and also to cushion and absorb the impact when a vehicle collides with it. As shown in FIG. 10, the back surface of the sheet base material 11 of the self-luminous sheet 1 is placed against the front side of the outer circumferential surface of the cushion drum 40, the belts 13a and 13b are placed against the upper back surface of the outer circumferential surface of the cushion drum 40 with the end of the belt 13a fixed to the fastener 13c, the belts 14a and 14b are placed against the lower back surface of the outer circumferential surface of the cushion drum 40 with the end of the belt 14a fixed to the fastener 14c, the belts 15a and 15b are placed against the upper surface of the cushion drum 40 with the end of the belt 15a fixed to the fastener 15c, and the box 28a of the power supply / control device 28 is placed on the upper surface of the cushion drum 40, thereby attaching the self-luminous sheet 1 to the cushion drum 40. The length of the sheet base material 11 in the left-right direction (X direction) is approximately half the circumference of the cushion drum 40, and the sheet base material 11 covers half (the front side) of the outer circumferential surface of the cushion drum 40.

[0041] In the self-luminous sheet 1 attached to the cushion drum 40, the reflective sheets 12a to 12e and the caps 31 to 37 are exposed on the front side of the cushion drum 40. As a result, when the headlights of a vehicle illuminate the front side of the cushion drum 40 at night, the reflective sheets 12a to 12e reflect the irradiated light, and the reflected light enters the eyes of the vehicle driver, enabling the driver to recognize the presence of the cushion drum 40. Furthermore, at night, the LED elements LE1 to LE7 of the light emitters 21 to 27 light up or blink in a predetermined pattern, allowing the driver of the vehicle to recognize the presence of the cushion drum 40 that is not illuminated by the vehicle headlights. Furthermore, since the protruding portions of the light-emitting bodies 21-27 protruding from the front side of the sheet base material 11 are covered with caps 31-37, the protruding portions of the light-emitting bodies 21-27 and the caps 31-37 function to protect the LEDs of the light-emitting bodies 21-27 from the impact when the vehicle collides with the cushion drum 40. The self-illuminating sheet using the light-emitting bodies 21'-27' and the caps 31'-37' is attached to the cushion drum 40 in the same manner as the self-illuminating sheet 17, and the protrusions of the light-emitting bodies 21'-27' and the caps 31'-37' function to protect the LEDs of the light-emitting bodies 21'-27' from the impact when the vehicle collides with the cushion drum 40. The cushion drum on which the self-luminous sheet 1 and the like are attached is not limited to a round cushion drum such as the cushion drum 40, but may be a square cushion drum having a rectangular parallelepiped shape or the like.

[0042] [Other examples of self-luminous sheets] Figure 17 is an oblique view of another example of the self-luminous sheet, Figure 18(a) is a plan view of the self-luminous sheet shown in Figure 17, Figure 18(b) is a front view of the self-luminous sheet shown in Figure 17, Figure 18(c) is a back view of the self-luminous sheet shown in Figure 17, and Figure 19 is an exploded oblique view of the self-luminous sheet shown in Figure 17. In the figures, 1' is a self-luminous sheet, 50 is a sheet body, 51 is a sheet base material, 52 is a reflective sheet, and h51, h52, h53, h54, h55, h56, and h57 are through holes. Components that are the same as those in the self-luminous sheet 1 shown in Figures 1 to 5 are given the same symbols, and in each figure, X is the left-right direction, Y is the front-back direction, and Z is the up-down direction. As shown in FIGS. 17 to 19, the self-luminous sheet 1′ includes a sheet body 50, a light-emitting unit 20, and caps 31 to 37. As shown in FIG. The sheet member 50 includes a rectangular sheet base material 51 and a reflective sheet 52 . Unlike the sheet base material 11 (tarpaulin) of the self-luminous sheet 1, the sheet base material 51 is made of a metal plate such as aluminum, and has a plate thickness of 0.5 to 5 mm. The reflective sheet 52 is an encapsulated type reflective sheet like the reflective sheets 12a to 12e of the self-luminous sheet 1, or an encapsulated lens type retroreflective sheet or the like having an arrow pattern, and is attached to the front center of the sheet base material 51 with an adhesive or the like. Instead of attaching the reflective sheet 52 to the sheet base material 51, the arrow pattern of the reflective sheet 52 may be directly printed on the sheet base material 51.

[0043] As shown in FIG. 19, seven through holes h51 to h57 are provided around the periphery of the reflective sheet 52 in the center of the sheet base material 51. As in the case of the self-luminous sheet 1, in the self-luminous sheet 1', each protrusion of the light-emitting bodies 21-27 is inserted from the back side into each of the through holes h51-h57 provided in the sheet base material 51 and protrudes toward the front side of the sheet base material 51, each protruding protrusion is covered with a cap 31-37, the second protrusion of the cap 31-37 is fitted into the recess on the outer surface of each protrusion formed by the first protrusion, the second protrusion of the cap 31-37 is engaged with the first protrusion of the light-emitting bodies 21-27, and the sheet base material 51 is sandwiched between each cap 31-37 and the flange of each light-emitting body 21-27, whereby each light-emitting body 21-27 is attached to the sheet base material 51. As in the case of the self-luminous sheet 1, in the self-luminous sheet 1', the power supply / control device 28 and each of the light-emitting bodies 21-27 are connected by electric wires EW1-EW7, and electricity is supplied from the power supply / control device 28 to each of the LEDs (LED elements) of the light-emitting bodies 21-27, causing each LED (LED element) to emit light. In the self-illuminating sheet 1', the light emitters 21 to 27 may be attached inside the reflecting sheet 52, rather than around the reflecting sheet 52. In this case, holes are also provided in the reflective sheet 52 through which each protrusion of the light-emitting elements 21-27 is inserted, and each protrusion of the light-emitting elements 21-27 is inserted through the sheet base material 51 and the reflective sheet 52, and each protrusion protruding from the reflective sheet 52 is covered with a cap 31-37.

[0044] The self-luminous sheet 1' is attached as a display board to road curves, crossroads, etc. via supports or the like. In the self-illuminating sheet 1' attached to a curve in a road, a crossroads, or the like, the reflective sheet 52 and the caps 31 to 37 are exposed on the front side of the sheet body 50. As a result, similarly to the self-luminous sheet 1, when the headlights of a vehicle illuminate the front side of the self-luminous sheet 1' at night, the reflective sheet 52 reflects the irradiated light and the reflected light enters the eyes of the vehicle driver, thereby enabling the driver to recognize the presence of the self-luminous sheet 1'. Furthermore, at night, the LED elements LE1 to LE7 of the light-emitting bodies 21 to 27 light up or blink in a predetermined pattern, allowing the driver of the vehicle to recognize the presence of the self-luminous sheet 1' that is not illuminated by the vehicle's headlights. Furthermore, since the protruding portions of the light-emitting bodies 21-27 protruding from the front side of the sheet body 50 are covered with caps 31-37, the protruding portions of the light-emitting bodies 21-27 and the caps 31-37 function to protect the LEDs of the light-emitting bodies 21-27 from the impact when a vehicle comes into contact with the self-illuminating sheet 1'. In the self-illuminating sheet 1' as well, the light-emitting bodies 21-27 and the caps 31-37 may be replaced with light-emitting bodies 21'-27' and caps 31'-37'.

[0045] As described above, the self-luminous sheet 1 (self-luminous sheet 1') includes the sheet body 10 (50), the light-emitting units 20, and the caps 31 to 37 (31' to 37'). The sheet body 10 (50) includes the sheet base material 11 (51) and the reflective sheets 12a to 12e (52). The light-emitting unit 20 includes the light-emitting bodies 21 to 27 (21' to 27'), the power supply / control device 28, and the electric wires (cables) EW1 to EW7. In the self-luminous sheet 1 (self-luminous sheet 1'), the caps 31 to Since each light-emitting body 21-27 (21'-27') is attached to the sheet base material 11 (51) with caps 31'-37' (31'-37') over it, there is no need to troublesomely attach the light-emitting unit 20 to the sheet base material 11 (51). Even if any of the light-emitting bodies 21-27 (21'-27') of the light-emitting unit 20, or the power supply / control device 28, or the electric wires (cables) EW1-EW7 malfunctions, the malfunctioning part of the light-emitting unit 20 or the entire light-emitting unit 20 can be replaced. Furthermore, if any of the caps 31-37 (31'-37') is damaged, only the damaged cap can be replaced. [Industrial Applicability]

[0046] The self-luminous sheet of the present invention does not require much effort in attaching the light-emitting body, its circuit and protective member to the sheet base material, and even if the light-emitting body or circuit breaks down or the protective member is damaged, the light-emitting body, circuit or protective member can be removed from the sheet base material and only the broken or damaged parts can be replaced, making it possible to use the self-luminous sheet as a sheet to be attached to various objects installed on roads, such as road signs, cushion drums, cones and display boards. [Explanation of symbols]

[0047] 1, 1' Self-luminous sheet 10 Sheet body 11 Sheet substrate 12a, 12b, 12c, 12d, 12e Reflective sheets 13a, 13b, 14a, 14b, 15a, 15b Belt 13c, 14c, 15c clasp 20 Light Emitting Unit 21, 22, 23, 24, 25, 26, 27 Illuminants 21', 22', 23', 24', 25', 26', 27' Luminaire 21a, 21'a Tsuba 21b, 21'b protrusion 21c1, 21c2, 21c3, 21c4 First convex part 21d1, 21d2, 21d3, 21d4 1st protrusion 21e, 21'e LED 21f, 21'f LED board 21g1, 21g2, 21'g1, 21'g2 leadframe 21k, 21'k space 21s1, 21s2, 21s3, 21s4 gap 21'n Male threaded part, 28 Power supply and control device 28a Box 28b solar cell 28c LED 28d storage battery 28e Light emitting circuit / control unit 31, 32, 33, 34, 35, 36, 37 Cap 31', 32', 33', 34', 35', 36', 37' Cap 31a Cap front part 31b Cap body 31c1, 31c2, 31c3, 31c4 Second convex part 31d1, 31d2, 31d3, 31d4 2nd protrusion 31'n Female thread 40 Cushion Drum 50 Sheet body 51 Sheet substrate 52 Reflective sheet EW1, EW2, EW3, EW4, EW5, EW6, EW7 Electric wires (cables) h11, h12, h13, h14, h15, h16, h17 through hole h51, h52, h53, h54, h55, h56, h57 through hole LE1, LE2, LE3, LE4, LE5, LE6, LE7, LE8 LED elements

Claims

1. A self-illuminating sheet that is attached to an object installed on a road, A sheet body; a light-emitting unit including a light-emitting body, a light-emitting circuit and a control unit for causing the light-emitting body to emit light, and a power source for supplying electricity to the light-emitting circuit and control unit; A protective member for protecting the light emitter, The light-emitting unit is removably attached to the sheet body.

2. 2. The self-illuminating sheet according to claim 1, wherein the protective member is removably attached to the light-emitting body.

3. 3. The self-luminous sheet according to claim 2, wherein the light emitter comprises an LED and an LED housing case for housing the LED, and the protective member is a cap that is detachably fitted onto the LED housing case.

4. The self-luminous sheet according to claim 3, characterized in that a portion of the LED storage case protrudes from the sheet body, and the light-emitting unit is attached to the sheet body by covering the portion of the LED storage case protruding from the sheet body with the cap.

5. The self-luminous sheet according to claim 4, characterized in that the LED storage case and the cap are provided with a fall-prevention means for preventing the cap, which covers a part of the LED storage case, from coming off the LED storage case.

6. The self-luminous sheet as described in claim 5, characterized in that a first convex portion and a first projection are provided on the outer peripheral surface of the LED storage case, a second convex portion and a second protrusion are provided on the inner peripheral surface of the cap, and the anti-detachment means is formed by the second convex portion fitting into a recess formed by the first convex portion and the first protrusion engaging with the second protrusion.

7. 2. The self-luminous sheet according to claim 1, wherein the power source comprises a solar cell and a storage battery.

8. The self-illuminating sheet of claim 1, wherein the sheet body has a sheet base material and a reflective sheet attached to the sheet base material, the reflective sheet forms an attention-grabbing pattern, and the illuminant is positioned in a part of the sheet base material where the reflective sheet is not present so as to highlight the pattern.

9. The self-luminous sheet according to claim 8, characterized in that the sheet body has an object attachment portion for attaching the sheet base material to the object, the object being a cushion drum, and the object attachment portion being a belt for wrapping and fixing the sheet base material around the cushion drum.

10. 2. The self-illuminating sheet according to claim 1, wherein the sheet body is a metal display plate.

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