JP5690227B2 - Solar tile - Google Patents

Description

  The present invention relates to a solar tile that emits sunlight as an energy source and is used for road surface illumination, guidance display, and the like.

A solar tile accommodates a solar power generation device, a power storage device, and a lighting device in a main body, is installed on a road surface, and is used for road surface lighting, guidance display, and the like.
Since solar tiles are installed on the road surface, it is necessary to have a structure that does not allow rainwater or the like to enter the interior even if it receives temperature changes, heat received from sunlight, uneven external force received from people passing by or cars, etc. There is.
Prior art of such solar tiles include:

  In the solar tile disclosed in Patent Document 1, a frame body (waterproof fastener 20) formed from a circular annular body is screw-fixed to a bottomed frame-shaped main body (in the same document, casing 1), The frame body has a structure in which a tempered glass lid (the lid 2) is pressed against the main body via a seal member.

Utility Model Registration Gazette No. 3055207

Solar tiles are installed with the main body buried in the ground and the frame and lid facing the ground surface. For this reason, the frame is exposed on the ground and directly affected by environmental changes such as sunlight, but the main body in the ground is not directly affected. As described above, since the frame body and the main body have different degrees of influence of environmental changes, a temperature difference occurs between the main body and the frame body, and the thermal expansion amounts of the main body and the frame body differ.
At this time, in the solar tile disclosed in Patent Document 1, the frame body is formed of a continuous annular body and is screwed to the main body. For this reason, when the amount of thermal expansion of the main body and the frame is different, stress acts between the main body and the frame, and stress is applied to the frame from the main body via a fixing screw. May cause out-of-plane deflection. When the frame is bent, the pressing force against the lid is weakened, and a gap is generated between the main body and the frame, and rainwater or the like may enter from the gap.

  Further, in the case of a frame formed of a continuous annular body, there is a relatively long distance between fixing screws arranged on one member called a continuous frame. Since the stress that the frame receives from the fixing screws increases in proportion to the amount of thermal expansion between the fixing screws, in the case of the conventional example in which there are fixing screws that are relatively far apart, the stress acting on the frame also increases. Conceivable. For this reason, there is a problem that fatigue is accumulated in the fixing screw and each member fixed by the fixing screw to adversely affect the durability, and when the repeated stress is applied for a long time, the screw is loosened.

  In addition, the stress acting on the frame is not only caused by the difference in thermal expansion between the frame and the main body due to temperature changes as described above, but also a non-uniform force from a person or vehicle passing above the solar tile. Also occurs when receiving. At this time, since the frame body is an annular body, the stress acting on a part of the frame body also affects the entire frame, and, similarly to the problem described above, fatigue of each member fixed by the fixing screw and the fixing screw is caused. Accumulation or loosening of screws occurs. In particular, when a gap is generated between the main body and the frame by bending in the out-of-plane direction described above, and a force is applied to a portion where the gap is generated, a relatively large force may act on the lever principle. Helps accumulate fatigue and loosening screws.

  Furthermore, in the case of a frame body made of an annular body, the annular frame body must be press-molded from a plate material larger than the frame body at the time of manufacture, the usable flat plate material is limited, and the frame body is punched out. There is also a problem that the material after use is wasted and the manufacturing cost is increased.

  The present invention has been made in order to solve such a problem, and to obtain a solar tile that can ensure the maintenance of watertightness for a long period of time and can reduce the manufacturing cost without causing a large deflection of the frame body due to a temperature change or the like. It is an object.

(1) A solar tile according to the present invention includes a bottomed frame-shaped main body having a frame body setting portion on the outer periphery of an opening, a seal member made of an elastic body installed in the frame body setting portion, and the seal member And a lid made of a translucent member that covers the opening of the main body and a frame that is arranged so as to press the outer periphery of the lid and is fixed to the frame installation portion. The frame body is divided into at least two parts , and is fixed so that a predetermined gap is formed between opposing parts of the divided members, and the divided members are formed to include at least corners. It is characterized by being.
Each part of the divided frame body includes a corner part, the rigidity of each part is increased, and if the number of fixing screws is the same, a stronger pressing force is obtained compared to the case where the corner part is not included, On the contrary, the number of fixing screws can be reduced as compared with the case where the corner portion is not included to obtain the necessary pressing force.

(2) Further, in those described in the above (1), the frame is characterized in that it is intended to form a rectangular shape when installed each member that is divided into the frame installation portion Is.

(3) In addition, in the above-described (2), the frame body forms a square when the divided members are installed on the frame body setting portion, and the members are equilateral L It is characterized by being divided into four in the shape of a font.

(4) Further, in any of the above (1) to (3), the frame body is fixed to the frame body setting portion with a fixing screw, and the fixing screw is on the outer peripheral side of the seal member. Is provided.

(5) Further, in the above (4), the screw holes of the fixing screw for fixing the frame body are formed in a zigzag shape in the longitudinal direction of the frame body.

The solar tile according to the present invention has a bottomed frame-like main body having a frame body setting portion on the outer periphery of the opening, a sealing member made of an elastic body installed in the frame body setting portion, and overlaps the sealing member. A lid made of a translucent member that covers the opening of the main body, and a frame that is arranged so as to press the outer periphery of the lid and is fixed to the frame body setting portion. The body is divided into at least two parts, and is fixed so that a predetermined gap is formed at the facing part between the divided members. Therefore, the body and the frame are changed by heat due to direct sunlight or changes in the outside air temperature. Even if the amount of thermal expansion is different, the relative position change between the two is allowed, the frame body is not greatly bent, and further, no load is applied to the screw and each member. No loosening occurs, ensuring watertightness for a long time. It can be.
In addition, since the frame body is divided into at least two parts and formed into an annular shape at the time of assembly, more frames can be formed from a single flat plate material as compared with the case of forming an annular frame body at the time of molding. And cost can be reduced.

It is a top view of the solar tile which concerns on one embodiment of this invention. It is sectional drawing which follows the arrow AA line in FIG. FIG. 3 is an enlarged view of a circled portion in FIG. 2. It is a top view of the equilateral L character which comprises the frame which concerns on one embodiment of this invention. It is a perspective view of an equilateral L character which constitutes a frame concerning a 1 embodiment of the present invention. It is sectional drawing which follows the arrow BB line in FIG. It is sectional drawing which follows the arrow CC line in FIG. It is a bottom view of the solar tile which concerns on one embodiment of this invention. It is a front view of the solar tile which concerns on one embodiment of this invention.

  The solar tile 1 according to the present embodiment is installed in a main body 5 of a bottomed frame body having an outward flange portion 3 on a peripheral edge portion of an opening 23 and a seal member groove 7 formed in the flange portion 3. A seal member 9 made of an elastic body, a lid body 11 made of a translucent member that overlaps the seal member 9 and covers the opening 23 of the main body 5, and an outer peripheral portion of the lid body 11, The frame 15 is fixed to the flange portion 3 by screws. This will be described in detail below.

<Main body>
The main body 5 is configured by a bottomed frame shape having an outward flange portion 3 at the peripheral edge of the opening 23. In addition, the flange part 3 of this Embodiment is corresponded to the frame installation part of this invention.
Inside the main body 5, devices such as the light guide plate 2, the solar battery cell 4, and the power storage device 6 are accommodated. The main body 5 in the present embodiment is made of aluminum die cast.

  A convex portion 17 protruding upward is formed on the outermost peripheral portion of the upper surface of the flange portion 3 over the entire circumference. A frame body installation surface 19 for installing the frame body 15 is formed inside the convex portion 17, and a lid body installation surface 21 for installing the lid body 11 is formed further inside. Therefore, when the main body 5 is viewed from above the opening 23, there is a lid installation surface 21 so as to surround the opening 23, and there is a frame installation surface 19 so as to surround the lid installation surface 21. The upper surface of the convex portion 17 is arranged so as to surround the surface 19.

  The relationship between the heights of the three of the convex portion 17, the frame body installation surface 19 and the lid body installation surface 21 in the flange portion 3 will be described. The lid body setting surface 21 is lower than the upper surface of the frame body 15 by the thickness of the step portion 13 (see FIG. 3) formed on the outer periphery of the lid body. In position.

  Further, as shown in FIGS. 2 and 8, the lower surface inner peripheral portion of the flange portion 3 has a bulging portion 25 bulging downward at a predetermined interval. Three bulging portions 25 are provided on each side, and the bulging portion 25a at the center is formed larger than the other two bulging portions 25b. The bulging portion 25 is a portion for providing a screw hole 29 of a frame fixing screw 27 for fixing the frame 15 to the main body 5, and is set to be thicker than the depth of the screw hole 29. In this way, by bulging only necessary portions in the screw hole 29, the entire flange portion 3 may not have a thickness larger than the depth of the screw hole, and material saving of the main body 5 is achieved. .

  Further, as shown in FIG. 3, the lid installation surface 21 has a seal member groove 7 for installing the seal member 9. The seal member groove 7 is formed over the entire circumference in the radial center of the lid installation surface 21. The depth of the groove 7 for the seal member is set shallower than the diameter of the seal member 9 having a circular cross section. By setting the depth of the groove 7 for the seal member in this way, when the seal member 9 is installed, the upper part of the seal member 9 protrudes from the lid installation surface 21, and when the lid 11 is installed, the projection is It is pressed by the lid 11 and exhibits water tightness.

  Further, as shown in FIGS. 3 and 8, a grooved spring pin 31 is provided at each corner of the bottom surface of the flange portion 3 to be fixed to the ground when the solar tile 1 is embedded.

<Cover body>
The lid 11 is formed by a single rectangular plate made of a light-transmitting material, and the outer peripheral lower surface is placed on the lid installation surface 21 and installed on the main body 5 as shown in FIG. .
A stepped portion 13 is formed on the outer peripheral portion of the lid 11 so as to be recessed from the surface side by the thickness of the frame 15. By forming the step portion 13 on the outer peripheral portion of the lid body 11, the upper surface 33 of the frame body and the upper surface 35 of the lid body are flush with each other when the frame body 15 is installed.
The upper surface 35 of the lid body has a plurality of protrusions 37 for preventing slipping of a person or vehicle passing above.

<Frame body>
As shown in FIGS. 4 and 5, the frame 15 has four L-shaped members having equal sides (hereinafter referred to as “equal-side L-shaped body 39”) arranged as shown in FIG. 1. It is formed in a rectangular annular body. At this time, the equilateral L-shaped body 39 is arranged with the end portions 41 of each side facing each other, and a gap S of 0.5 mm is formed between the end portions 41 (see FIG. 1).
The equilateral L-shaped body 39 is made of stainless steel.

One equilateral L-shaped body 39 has five countersunk screw through holes 43. The countersunk screw through hole 43 has one corner (the countersunk screw through hole 43a) at the corner of the equilateral L-shaped body 39, one near each end 41 (the countersunk screw through hole 43b), and a countersunk screw. One through hole 43a and a countersunk screw through hole 43b are formed in one place (a countersunk screw through hole 43c).
The countersunk screw through hole 43c is located at a position shifted from the center of the line connecting the countersunk screw through hole 43a and the countersunk screw through hole 43b to the outside of the frame. That is, each countersunk screw through hole 43 is arranged in a zigzag pattern so that when one of the countersunk screw through holes 43b is connected to the adjacent countersunk screw through hole 43 in order, a bent line is formed. Arrangement (see FIGS. 6 and 7).

  Further, as shown in FIG. 3, the countersunk screw through hole 43 has a tapered portion that matches the shape of the head of the countersunk screw so that the top of the head of the countersunk and the top of the equilateral L-shaped body 39 coincide with each other when the screw is screwed. Is formed.

  The diameter of the countersunk screw through hole 43 is set to be slightly larger than the diameter of the screw portion of the frame fixing screw 27, and a predetermined gap is formed when the frame fixing screw 27 is inserted. In this embodiment, the countersunk screw through-hole 43 has a diameter of 6 mm, and the screw to be used is M5. A gap of 0.5 mm on one side is formed between the threaded portion and the countersunk screw through-hole 43. .

<Regarding the overall shape>
In the solar tile 1, the power storage device 6 and the like are accommodated in the main body 5, the sealing member 9 is installed in the sealing member groove 7, the opening 23 is covered with the lid 11, and the equilateral L-shaped body 39 is annular. 4 are arranged in this manner, and the L-shaped body 39 is fixed to the main body 5 with the frame fixing screws 27 and assembled. At this time, as shown in FIG. 3, the upper surface of the convex portion 17, the upper surface 33 of the frame, the upper surface of the head of the frame fixing screw 27, and the upper surface 35 of the lid are substantially flush.

  Further, as shown in FIG. 3, the equilateral L-shaped body 39 presses the lid body 11 by screw fixing, and the lid body 11 further exerts watertightness by pressing the protruding portion of the seal member 9 against the main body 5.

When the solar tile 1 according to the present embodiment assembled as described above is embedded in the ground, the equilateral L-shaped body 39 is directly exposed to the influence of environmental changes such as temperature because it is exposed on the ground. Since 5 is in the ground and is covered with the lid 11, it is not directly affected. Therefore, when there is a change in the environment, a temperature difference is generated between the equilateral L-shaped body 39 and the main body 5, and as a result, the amount of thermal expansion differs between the two. At this time, in the present embodiment, since there is a gap S of 0.5 mm between the equilateral L-shaped bodies 39, distortion in the surface direction due to the stress acting on the equilateral L-shaped body 39 from the main body 5 side can be released. The occurrence of outward deflection can be suppressed. As a result, the force of pressing the lid 11 with the equilateral L-shaped body 39 is weakened, and no gap is generated between the main body 5 and the equilateral L-shaped body 39, and the watertightness can be maintained for a long time.
Further, since the gap is not generated, the accumulation of fatigue and the loosening of the screw according to the principle described in the section of the problem to be solved by the invention are not promoted.

  Further, in the solar tile 1 according to the present embodiment, since the frame body 15 is formed by the four equilateral L-shaped bodies 39, even when materials having different thermal expansion coefficients are used for the main body 5 and the frame body 15, It will not be adversely affected by the difference.

Further, in the solar tile 1 according to the present embodiment, since the frame body 15 is formed by the four equilateral L-shaped bodies 39, adverse effects due to the stress that the frame body 15 receives from the frame body fixing screws 27 due to thermal expansion are reduced. The Hereinafter, this point will be described in detail.
First, in order to consider the amount of thermal expansion, the distance between the frame fixing screws 27 is arranged. In the case of a frame like the conventional example formed by a continuous annular body, the distance between the fixing screw arranged at the corner and the fixing screw arranged at the diagonal is the farthest. On the other hand, in the case of the equilateral L-shaped body 39, the distance between the frame fixing screws 27 inserted into the countersunk screw through holes 43b is the longest. Therefore, when the frame formed by the continuous annular body and the frame 15 formed by arranging the four equal-sided L-shaped bodies 39 in an annular shape have the same size, the maximum distance for screw fixing is The case where the frame is formed by the equal side L-shaped body 39 is shorter. Therefore, the amount of thermal expansion between the members fixed with screws is also reduced. As a result, the stress acting between the members to be screwed is reduced, and the problem that fatigue is accumulated to adversely affect the durability and the problem that the screw is loosened can be improved.

  In addition, since the equilateral L-shaped bodies 39 are separated from each other, when a stress is applied to a certain equilateral L-shaped body 39 from a person or a vehicle passing above the solar tile 1, the other equilateral L-shaped bodies 39 are affected. The problem of accumulated fatigue and screw loosening can be improved as compared with the case of an annular body in which the stress applied to a part affects the entire frame body without exerting any effect.

  Further, when viewed from above, the countersunk screw through holes 43 of the equilateral L-shaped body 39 are located at one corner and two zigzag in the longitudinal direction of the sides. The L-shaped body 39 has a stronger pressing force on the lid body 11 than the case where the screw holes are linearly positioned.

  Further, the equilateral L-shaped body 39 is a member having a rectangular corner portion, and has higher surface rigidity than the rectangular member. As a result, a pressing force to the lid body 11 can be secured with a small number of screws. .

Further, since the frame body 15 according to the present embodiment is formed by the four equilateral L-shaped bodies 39, when the equilateral L-shaped body 39 is manufactured, it can be press-molded from a smaller flat plate material, and the equilateral L-shaped body. The shape of 39 can efficiently remove material from one flat plate material.
From this point, it is possible to improve the cost problem when the frame is formed from a continuous annular body.

In the above embodiment, the main body 5 has a square shape, and the members constituting the frame body 15 in accordance with the shape thereof are L-shaped members (equal side L-shaped bodies 39). It is not limited, The following aspects are also included.
For example, when the main body 5 is circular, the frame body 15 may be configured by two semi-annular members that form a ring by combining with the shape of the main body 5. Moreover, when the main body 5 is a polygon like a pentagon, you may comprise from the some member which makes a polygonal ring from a some member with the shape. In this case, by using a member that includes polygonal corners, the surface rigidity can be increased, which is a preferred form.
Further, in the above embodiment, the place where the seal member 9 is installed is the seal member groove 7. However, the place where the seal member 9 is installed may be formed in a notch shape, for example, a notch shape.

DESCRIPTION OF SYMBOLS S Clearance 1 Solar tile 2 Light guide plate 3 Flange part 4 Solar cell 5 Main body 6 Power storage device 7 Groove for seal member 9 Seal member 11 Lid body 13 Step part 15 Frame body 17 Convex part 19 Frame body installation surface 21 Cover body installation surface DESCRIPTION OF SYMBOLS 23 Opening part 25 Swelling part 25a Swelling part 25b Swelling part 27 Frame body fixing screw 29 Screw hole 31 Groove spring pin 33 Upper surface of frame body 35 Upper surface of lid body 37 Non-slip protrusion 39 Equilateral L-shaped body 41 End 43 Countersunk screw through hole 43a Countersunk screw through hole 43b Countersunk screw through hole 43c Countersunk screw through hole

Claims (5)

A bottomed frame-shaped main body having a frame body setting portion on the outer periphery of the opening, a seal member made of an elastic body installed in the frame body setting portion, and a transparent member that overlaps the seal member and covers the opening of the main body A cover body made of a light member, and a frame body arranged to press the outer periphery of the lid body and fixed to the frame body installation portion, the frame body being divided into at least two parts The solar tile is fixed so that a predetermined gap is formed between opposing portions of the divided members, and each of the divided members is formed to include at least a corner portion . The frame body, the solar tile according to claim 1, characterized in that to form a rectangular shape when installed each member that is divided into the frame installation portion.   The said frame body forms a square, when each divided member is installed in the said frame body installation part, and each said member is divided into four by equilateral L-shaped form. 2. Solar tile according to item 2.   The said frame is fixed to the said frame installation part with the fixing screw, This fixing screw is provided in the outer peripheral side of the said sealing member, The Claim 1 thru | or 3 characterized by the above-mentioned. Solar tiles. The solar tile according to claim 4, wherein screw holes of fixing screws for fixing the frame body are formed in a zigzag shape in a longitudinal direction of the frame body.

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