JP2009263972A - Embedded solar light - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that conventional embedded lights have required a large amount of costs and time for replacement when damaged since embedded lights have been frequently damaged and required frequent replacement due to the thermal contraction of asphalt, etc. and since especially a large number of embedded lights are used in the case of the guidance of a line of sight, etc. <P>SOLUTION: A double structure is provided for a case structure to prevent damage of its inner container due to the thermal contraction of asphalt. Even in case that replacement is required, it is possible to easily replace only the inner container. By controlling light emission patterns of LEDs by a microcomputer, it is possible to solve the problems of various light emission patterns and light emission failure due to insufficient electric charge at adverse weather. By guiding light emitted from the LEDs to a top surface and a middle surface by a light guiding part, the light can be visually recognized from a wide range. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is installed on the upper and side surfaces of roads, sidewalks, curbs, etc., and LED lights emit roadside zones, traffic lines such as centerlines, stop lines, intersections, alerts, and guidance It relates to a self-lighting embedded solar light.

  In general, the recessed lights, which are said to be installed in roads, sidewalks, curbs, etc., are embedded in asphalt and concrete that make up roads, sidewalks, curbs, etc. It is common to install a light and fill the gap with caulking material and fix it.

As described above, pressure is applied to an embedded light embedded in a road, a sidewalk, a curb or the like due to expansion of asphalt or concrete due to heat. For this reason, the embedded light as shown in Patent Document 1 may be damaged as the asphalt expands.
JP2007-177491A JP 2006-112043 A

  For this reason, the conventional recessed light has to be frequently replaced due to breakage. In the replacement of the conventional embedded light, it was necessary to remove the caulking material filled in the asphalt hole, remove the damaged embedded light, and install a new embedded light. In addition, since such embedded lights are used in large numbers, particularly when used for line-of-sight guidance, a large amount of cost and time are required for replacement in the event of breakage.

  Therefore, the present invention provides the following embedded solar light. That is, as a first invention, a cylindrical outer container, a spherical top surface and a cylindrical side surface, an inner container that is stored with a margin between the cylindrical outer container inner side surfaces, an LED structure stored in the inner container, Provided is an embedded solar light having a light guide unit that receives LED light and guides the light to a middle surface of a spherical top surface and a top surface of the spherical top surface.

  As a second invention, the light guide portion is a disc shape made of a transparent material, and has a mortar-shaped concave portion on the upper surface side of the region directly above the LED, and a spherical convex lens portion corresponding to the mortar-shaped concave portion on the lower surface side. An embedded solar light according to the first invention is provided.

  As a third invention, there is provided the embedded solar light according to the first invention or the second invention, wherein the spherical top surface is a lens.

  According to a fourth aspect of the invention, there is provided the embedded solar light according to any one of the first aspect to the third aspect, wherein the inner surface of the spherical top surface is provided with light diffusion irregularities.

  As a fifth invention, there is provided an embedded solar light according to any one of the first invention to the fourth invention, wherein a solar cell for power supply is arranged on the light emitting side of the LED structure.

  As a sixth invention, there is provided an embedded solar light according to any one of the first invention to the fifth invention, wherein an opening is formed on a bottom surface of the cylindrical outer container.

  As a seventh aspect of the invention, there is provided the embedded solar light according to any one of the first aspect to the sixth aspect, wherein the cylindrical outer container has a skirt shape extending downward.

  According to the present invention, it is possible to provide a solar light that is less likely to be damaged due to expansion of asphalt, concrete, and the like, and can be easily replaced in a short time even when replacement is necessary due to damage or failure.

  The best mode for carrying out the present invention will be described below. In addition, this invention is not limited to these embodiments at all, and can be implemented in various modes without departing from the gist thereof.

The first embodiment will mainly describe claim 1, claim 2, claim 5, and the like. In the second embodiment, claims 3 and 4 will be mainly described. The third embodiment will mainly describe claim 6. The fourth embodiment will mainly describe claim 7.
<Embodiment 1>
<Summary of Embodiment 1>

This embodiment is an embedded solar light that has a double structure of a cylindrical outer container and an inner container, with a margin between the inner side surface of the cylindrical outer container and the side surface of the inner container, It is characterized in that the inner container is not damaged against the pressure generated by the expansion of asphalt or concrete.
<Configuration of Embodiment 1>

  The conceptual diagram of the embedded solar light of this embodiment is shown in FIGS. FIG. 1 is a perspective view of an embedded solar light of the present embodiment, and FIG. 2 is an exploded view of each part of the embedded solar light of the present embodiment.

  The embedded solar light of this embodiment is composed of a cylindrical outer container (0101, 0201), a spherical top surface (0102, 0202), and a cylindrical side surface (0103, 0203), with a margin between the inner side surfaces of the cylindrical outer container. And the LED structure (0105, 0205) stored in the inner container, and the LED light is received to guide the light to the middle surface of the spherical top surface and the top surface of the spherical top surface. Light guides (0106, 0206).

  The “cylindrical outer container” is a member that houses the inner container and is fixed to a material that forms a road surface or a shoulder such as asphalt or concrete. FIG. 3A shows a perspective conceptual view of the cylindrical outer container of the present embodiment. A claw (0301) for fixing the inner container is provided on the upper inner surface of the cylindrical outer container. By mooring the claw of the inner container to this claw, the inner container is fixed to the cylindrical outer container. A rib (0302) is provided on the lower outer surface of the cylindrical outer container. This rib is for facilitating fixation to asphalt or concrete when the cylindrical outer container is installed on the road surface. By this rib, even if a caulking material etc. and a cylindrical outer container peel, it becomes possible to prevent a cylindrical outer container from rotating. The material constituting the cylindrical outer container may be composed of a robust material that can withstand expansion such as asphalt or concrete, or a resin material such as polycarbonate that can flexibly cope with expansion. desirable. Further, in order to flexibly cope with the expansion, a notch (0303) may be provided in a part of the cylindrical outer container as shown in FIG.

  The horizontal cross section of the cylindrical outer container does not have to be circular, and may be a polygon such as a triangle or a quadrangle. By configuring the horizontal cross section of the cylindrical outer container with a polygon, it is possible to prevent the embedded solar light from rotating.

  The “inner container” is composed of a spherical top surface and a cylindrical side surface, and is accommodated in the aforementioned cylindrical outer container. The inner container stores an LED structure and a light guide unit, which will be described later. The spherical top surface of the inner container is made of a material that transmits light emitted from the LED. The cylindrical side surface may be made of the same material as the spherical top surface that transmits light, but may be made of a material that does not transmit light. The inner container is accommodated with a margin inside the cylindrical outer container. The space provided between the inner side of the cylindrical outer container and the inner container may be about 1 to about 5 millimeters or about 1 to 7% of the diameter of the cylindrical outer container. If the asphalt or concrete constituting the road surface expands when the solar light of the present embodiment is installed on the road surface, the outer space of the cylindrical outer container is caused by the space provided between the inner surface of the cylindrical outer container and the inner container. The pressure applied to the container is prevented from being transmitted to the inner container.

  The cross-sectional conceptual diagram for demonstrating the influence by the solar light of this embodiment installed in the road surface to FIG. 4 (a) by expansion | swelling of asphalt or concrete (0401) was shown. Due to the expansion, force is applied from the direction indicated by the arrow (0402), and even if the cylindrical outer container (0403) is deformed (0404) as indicated by the dotted line, the inner surface of the cylindrical outer container and the inner container (0405) By providing a space (0406) between them, the inner container is not affected by the deformation of the cylindrical outer container. Further, it is desirable that the spherical top surface (0407) of the inner container is installed above the upper surface of the cylindrical outer container. If the spherical top surface is arranged so as to contact the inner surface of the cylindrical outer container as in Patent Document 2 whose conceptual diagram is shown in FIG. 4B, pressure is applied to the spherical top surface by deformation of the cylindrical outer container. May cause damage. In order to prevent this, if a margin is provided between the cylindrical outer container and the spherical top surface, earth and sand, dust, water and the like may enter from this gap. In addition, the inner container is not fixed to the cylindrical outer container and becomes unstable. For this reason, it is desirable that the spherical top surface of the inner container be installed above the cylindrical outer container.

  The inner container is fixed by a claw provided on the cylindrical outer container. It is desirable that the inner container fixed by the claws cannot be released unless a special tool is used. By requiring a special tool, it is possible to prevent the inner container installed on the road surface from being stolen.

  Note that the horizontal cross-sectional shape of the inner container may be circular or polygonal as long as it is a shape accommodated in the cylindrical outer container. As described above, the spherical top surface of the material constituting the inner container is preferably made of a transparent material such as polycarbonate or glass because it needs to transmit light emitted from the LED structure. Moreover, it is suitable also in terms of cost that the cylindrical side surface is made of the same material as the spherical top surface.

  FIG. 5 is a conceptual diagram for explaining the configuration of the LED structure (0501). In addition, in FIG. 5, the LED structure in the state which installed the light guide part (0502) is illustrated for description.

  The “LED structure” is a substrate (0504) on which a circuit for controlling the LED (0503) and the light emission pattern of the LED (0504), an illuminance sensor, a solar cell (0505), and electric power generated by the solar cell are held. It is comprised from the electrical storage part (0506) etc.

  The conceptual diagram which showed a mode that the LED structure was accommodated in the inner container in FIG. 6 was shown. The LED structure (0601) is housed from the lower part of the inner container (0602), is fixed to the upper part of the inner container, near the top surface of the spherical surface by screws (0603), and is suspended from the upper part of the inner container. ing. Thus, even when water enters from the top due to rain or the like, it is possible to prevent the LED structure from touching the water. Desirably, the lower part of the inner container housing the LED structure is sealed with a lid (0604) or the like in order to prevent water or water vapor from entering from the lower part of the inner container.

The “light guide unit” is disposed between the upper surface of the LED structure and the spherical top surface of the inner container, and guides light emitted from the LED to the middle surface of the spherical top surface and the top surface of the spherical top surface. The light guide part has a disk shape made of a transparent material, and has a mortar-shaped concave part on the upper surface side of the region directly above the LED and a spherical convex lens part corresponding to the mortar-shaped concave part on the lower surface side. FIG. 7 shows a cross section of the light guide portion (0701). An LED (0702) is arranged in the lower part of the figure. The light (0703) emitted from the LED passes through the spherical convex lens part (0704) provided in the disk-shaped light guide part, and reaches the mortar-like concave part (0705) disposed in the region immediately above the LED. In the mortar-shaped concave portion, the light emitted from the LED is dispersed in the middle abdominal surface direction (0706, 0707) of the spherical top surface (0709) and the zenith surface direction (0708) of the spherical top surface. Thereby, the light emitted from the LED is guided in the upper surface direction and the side surface direction of the embedded solar light of the present embodiment, and the visibility of the embedded solar light is improved. Moreover, the upper surface of the light guide may be in contact with the inner surface of the spherical top surface of the inner container. As will be described later, since the zenith surface of the spherical top surface may be formed in a lens shape, the distance between the zenith surface of the spherical top surface and the light guide unit is adjusted as appropriate from the viewpoint of the focal length. It is desirable to do.
<Embodiment 1 effect>

The embedded solar light of this embodiment can prevent damage due to expansion of asphalt and concrete constituting the road surface due to temperature change, and can provide an embedded solar light that is strong against rain and other water and has few failures. Become. In addition, by having a light guide that guides light emitted from the LED of the LED structure to the mid-plane and the top surface of the spherical top surface, the visibility of the embedded solar light from above and from the outer peripheral direction can be improved. It has become possible.
<Embodiment 2>
<Overview of Embodiment 2>

The embedded solar light of the present embodiment is guided to the light guide portion of the embedded solar light of the first embodiment, and emits light emitted from the mid-surface of the spherical top surface and the zenith surface of the spherical top surface. The zenith surface of the lens is used as a lens, and the unevenness for light diffusion is formed on the middle surface of the spherical top surface, thereby improving the visibility.
<Embodiment 2 configuration>

  FIG. 8 is a conceptual cross-sectional view of the spherical top surface of the inner container of the embedded solar light of this embodiment. In the embedded solar light of this embodiment, the top surface of the spherical top surface (0802) of the inner container (0801) is a lens (0803). As shown in FIG. 8, by using the zenith surface of the spherical top surface as a lens, it becomes possible to improve the visibility of light emitted from the zenith portion of the spherical top surface guided to the light guide unit (0804). . FIG. 8 shows an example in which the zenith lens is a convex lens, but by using the zenith lens as a convex lens, light can be collected and stronger light can be emitted. In addition, when the zenith lens is a concave lens, the light diffuses and can be viewed from a wider range. Moreover, you may comprise the lens of a top | zenith part with an unevenness | corrugation which diffuses light.

  As shown in FIG. 8A, the lens at the zenith part may be configured by configuring the outer surface of the inner container as a curved surface and the inner surface as a plane, and as shown in FIG. You may comprise both the outer surface and inner surface of a vessel with a curved surface. Moreover, as shown in (c), the outer surface of the inner container may be configured as a flat surface, and the inner surface may be configured as a curved surface.

FIG. 9A shows a conceptual perspective view when viewed from the spherical top surface of the inner container (0901) of the embedded solar light of the present embodiment. Further, (b) shows an enlarged cross-sectional view of the middle abdominal surface of the spherical top surface of the inner container shown in (a). The embedded solar light of the present embodiment has light diffusion irregularities (0902) formed on the middle surface of the spherical top surface. By providing unevenness for light diffusion on the middle surface of the spherical top surface, the light emitted from the middle surface of the spherical top surface is diffused by being guided to the light guide part, and it becomes possible to improve the visibility from a wider range. .
<Embodiment 2 effect>

Like the embedded solar light of the present embodiment, the light emitted from the LED is formed by configuring the zenith portion of the spherical top surface with a lens or by providing irregularities for diffusing light on the middle surface of the spherical top surface. It is possible to further improve the visibility by condensing or diffusing the light.
<Embodiment 3>
<Overview of Embodiment 3>

This embodiment is an embedded solar light characterized in that there is an opening in the bottom surface of the cylindrical outer container. By providing an opening in the bottom of the cylindrical outer container, even if rain or other water enters from the top of the recessed solar light, water will drain from the opening in the bottom and water will accumulate in the cylindrical outer container. It is preventing.
<Embodiment 3 configuration>

  FIG. 10 shows a side sectional conceptual diagram of the cylindrical outer container of the present embodiment. The cylindrical outer container of this embodiment has an opening on the bottom surface of the cylindrical outer container. If there is no opening, if water enters the inside of the cylindrical outer container due to rain or the like, water accumulates in the outer cylindrical container, and in some cases, the inner container or the LED structure is immersed in water, causing a failure. . In view of this, by providing an opening in the bottom surface of the cylindrical outer container, the water that has entered enters through the opening so that water does not accumulate in the cylindrical outer container.

As shown in FIG. 10 (a), the opening provided on the bottom surface of the cylindrical outer container may be all open without providing the bottom surface of the cylindrical outer container. As described above, one or a plurality of holes may be provided, or the bottom surface may be reticulated as shown in (c).
<Embodiment 3 effects>

Like the embedded solar light of the present embodiment, by providing an opening on the bottom surface of the cylindrical outer container, even if water such as rain enters the inside of the cylindrical outer container, the bottom surface of the cylindrical outer container It is possible to prevent water from accumulating inside the cylindrical outer container by draining water from the opening provided in the container.
<Embodiment 4>
<Outline of Embodiment 4>

This embodiment is an embedded solar light characterized in that the cylindrical outer container has a shape that expands downward. By making the horizontal cross-sectional diameter of the cylindrical outer container larger at the lower side than at the upper side, the embedded solar light installed on the road surface will not easily come off from the road surface even if the caulking material or other adhesive is peeled off. Is possible.
<Embodiment 4 configuration>

FIG. 11 shows a cross-sectional view of the cylindrical outer container when the embedded solar light of the present embodiment is installed on the road surface. Usually, an embedded solar light (1101) installed on a road surface is fixed on the road surface by filling a gap with asphalt or concrete (1103) constituting the road surface with a caulking material (1102). However, if the caulking material and the cylindrical outer container are peeled off due to some influence such as vibration of the car, rain, sunlight, etc. due to long-term use, the horizontal cross section of the cylindrical outer container as shown in FIG. If is the same at the top and bottom, you can easily remove the recessed solar light from the top, increasing the chances of being stolen. On the other hand, in the embedded solar light of the present embodiment shown in (a), by setting the skirt shape so that the cylindrical outer container spreads downward, even when the caulking material and the cylindrical outer container peel, Since the lower part of the cylindrical outer container is widened, it is difficult to remove from the upper part.
<Embodiment 4 Effect>

Like the embedded solar light of this embodiment, by making the cylindrical outer container into a skirt shape that spreads downward, it becomes impossible to easily remove it from the installed road surface, preventing theft It becomes possible.
<Specific example>

  FIG. 12 shows a specific example of the embedded solar light of the present invention. The embedded solar light of the present invention has a height of approximately 79 millimeters. The lower diameter of the cylindrical outer container is approximately 76.5 mm, the upper diameter is approximately 70 mm, and the height is approximately 65 mm. The height of the cylindrical side surface of the inner container is approximately 60 mm, the diameter of the cylindrical side surface is approximately 48.5 mm, and the diameter of the spherical top surface of the inner container is approximately 59 mm. Polycarbonate is used as the resin constituting the cylindrical outer container and the inner container.

  Amorphous silicon is used for the solar cell, and the electric power generated by the solar cell is stored in an electric double layer capacitor having a storage capacity of approximately 69 farats. A high-brightness LED is used as the light source LED, and the emission color can be selected from red, green, blue, white and orange according to the installation location and application. When the solar cell is irradiated with light at 50000 lux for 6 hours, it is fully charged and light emission for 20 hours becomes possible. The light emission pattern is controlled by a microcomputer, and control such as changing the lighting interval and blinking interval according to the remaining storage capacity is possible.

  As the light emission pattern, for example, the light emission time per day may be set to any time such as 8 hours or 12 hours, and in order to continue light emission for a long time, for example, the first 3 hours are set to 100% luminance. You can control the light emission brightness according to the time, such as making it emit light at 50% brightness for the next 3 hours, or turn on the first 3 hours and flash the next 3 hours in the same way You may control. In addition, an illuminance sensor may be provided in the LED structure, and the lighting / extinguishing time control according to the illuminance, light emission luminance control, lighting flashing control, and the like may be performed. Moreover, even when bad weather continues by the control by the microcomputer, it becomes possible to prevent the light emission failure due to insufficient charging by controlling the lighting and blinking time by the microcomputer.

The perspective view for demonstrating the embedding type solar light of Embodiment 1. FIG. Schematic for demonstrating the embedded solar light of Embodiment 1. FIG. The perspective conceptual diagram for demonstrating the cylindrical outer container of Embodiment 1. FIG. Sectional conceptual diagram for demonstrating the inner container of Embodiment 1. FIG. The perspective view for demonstrating the LED structure of Embodiment 1. FIG. The perspective conceptual diagram for demonstrating the inner container and LED structure of Embodiment 1. Sectional conceptual diagram for demonstrating the light guide part of Embodiment 1. FIG. Schematic for demonstrating the embedded solar light of Embodiment 2. FIG. Schematic for demonstrating the embedded solar light of Embodiment 2. FIG. Sectional conceptual diagram for demonstrating the embedded solar light of Embodiment 3. Sectional conceptual diagram for demonstrating the embedded solar light of Embodiment 4. Specific examples of the present invention

Explanation of symbols

0101, 0201 Tubular outer container 0102, 0202 Spherical top surface 0103, 0203 Tubular side face 0104, 0204 Inner container 0105, 0205 LED structure 0106, 0206 Light guide

Claims (7)

A cylindrical outer container;
An inner container consisting of a spherical top surface and a cylindrical side surface and housed with a margin between the inner side surfaces of the cylindrical outer container;
An LED structure stored in the inner container;
A light guide unit that receives the LED light and guides the light to the middle surface of the spherical top surface and the top surface of the spherical top surface;
Recessed solar light.   2. The buried light-emitting device according to claim 1, wherein the light guide portion has a disk shape made of a transparent material, and has a mortar-shaped concave portion on the upper surface side of the region directly above the LED and a spherical convex lens portion corresponding to the mortar-shaped concave portion on the lower surface side. Built-in solar light.   The embedded solar light according to claim 1 or 2, wherein the top surface of the spherical top surface is a lens.   The embedded solar light according to any one of claims 1 to 3, wherein a concave surface for light diffusion is formed on a middle surface of the spherical top surface.   The embedded solar light according to any one of claims 1 to 4, wherein a power source solar cell is disposed on a light emitting side of the LED structure.   The embedded solar light according to any one of claims 1 to 5, wherein an opening is formed on a bottom surface of the cylindrical outer container.   The embedded solar light according to any one of claims 1 to 6, wherein the cylindrical outer container has a skirt shape extending downward.