JP6030363B2 - Light emitting device for ground - Google Patents

Description

  The present invention relates to a ground light-emitting device that is embedded in the ground and emits a part of the ground, and a station platform on which the ground light-emitting device is disposed.

  As a light-emitting device that is installed on the ground and emits a part of the ground, a light-emitting device in which six white circular windows are provided on the surface and LEDs are attached under the white circular window, and the white circular window emits light. (Patent Document 1).

  However, such a light-emitting device can emit light in the form of dots, but has a problem in that it cannot emit linear continuous light. Spot-like light is hard to notice compared to linear light emitters. Therefore, for example, when used as a danger display on a station platform, there has been a demand for more clearly informing the danger by generating linear light so as to be more conspicuous. In addition, when it is desired to emit light from the ground as a road guide light, it is easier to recognize a guide light if it is displayed in a straight line rather than a dotted line. In view of these demands, a device for generating linear light from the ground has been desired.

Design Registration No. 1359064

  The objective of this invention is providing the light-emitting device for ground which can radiate | emit linear light from the ground, and the platform of the station in which this light-emitting device was arrange | positioned.

  The present invention adopts the following means in order to achieve the above-mentioned object.

The light-emitting device for ground that is embedded and installed in the ground according to the present invention,
A light source member having an LED as a light source;
A base on which the light source member is disposed;
A light guide member that introduces light from the light source member from the bottom surface or side surface and derives it from the top surface;
A translucent member arranged to cover the upper surface of the light guide member;
An upper surface exposed when buried in the ground, and
The light guide member is formed of a long upper surface, and guides long light from a part of the upper surface.

  In the present invention, the light guide member is disposed between the light transmissive member and the light source, whereby the light from the light source member is converted into light in the form of the upper surface of the light guide member and emitted through the light transmissive member. Therefore, in the present invention in which a long light guide member is used, long light is emitted from a part of the upper surface from the upper surface. Note that the part of the upper surface means that the entire upper surface does not shine, but that it shines in a narrower shape than the entire upper surface, and the elongated shape does not necessarily have a clear outline. In addition, those that shine in a long shape as a whole are also included. In addition, the present invention applies light directly from a light source to a translucent member by introducing light once into the light guide member and diffusing it even though a highly light-emitting LED is used as the light source. Compared with, the emitted light can be made uniform brightness. Furthermore, if a diffuser plate such as a milk half plate is used as the translucent member, the light emitted from the upper surface of the light guide member can be diffused even in the milk half plate, and the elongated shape with higher uniformity can be obtained. Light can be emitted from the ground.

  In the ground light emitting device of the present invention, the upper surface has a light emitting surface for emitting light from the light guide member to the upper surface side, and a light shielding surface for shielding light from the light guide member. It may be what you are doing. By adopting such an upper surface, it is possible to emit light in the shape of a light emitting surface that guides light of a certain shape from the upper surface of the ground light emitting device. Moreover, since the light-shielding surface is provided around the light emitting surface, it is possible to prevent the periphery of the light emitting surface from being dimly emitted and to emit light with a clear outline. Moreover, the light-emitting device for ground can efficiently concentrate the light from the light source on the light emitting surface by arranging the light guide member having a shape and size corresponding to the light emitting surface. When long light is emitted, the light exit surface is formed in a long shape, and a long light guide member is disposed below the light emitting surface, so that the light from the light source can be efficiently emitted. The light can be emitted to the emission surface. In addition, the present invention allows light to be diffused once introduced into the light guide member, so that even if a highly light-emitting LED is used as the light source, the light from the light source is emitted directly from the light exit surface. Thus, the light emitted from the light guide member can be made uniform in brightness.

  Furthermore, in the light emitting device for ground according to the present invention, a light shielding member for forming the light shielding surface may be provided on the upper surface of the light transmissive member. By disposing the light shielding member formed in the same shape as the range to be shielded on the upper surface of the translucent member, the above-described light shielding surface can be easily formed. In addition, by using a light shielding member, when it is desired to change the light shielding range, the light shielding range can be arbitrarily changed by replacing the light shielding member having a desired light shielding range. In addition, by arranging a light blocking member on the upper surface of the translucent member, even if the upper surface is damaged or deteriorated due to a vehicle passing over the upper surface of the light emitting device for ground or a person walking. By exchanging the light shielding member, it becomes possible to easily repair. Moreover, since the light shielding member and other components such as the screwing member can be concealed by the light shielding member, the light emitting device for ground having excellent aesthetics can be obtained.

  Furthermore, in the light emitting device for ground according to the present invention, a window made of a transparent member may be disposed in the center of the light shielding member. By adopting such a configuration, it is possible to reduce the possibility that rainwater, dust, and the like enter from the light exit surface.

  Further, in the light emitting device for ground according to the present invention, the light shielding member has the light emitting surface formed in an opening, and the light transmitting member has a convex portion formed in the same shape as the opening. It may be. By adopting such a configuration, light from the light guide member can be emitted to the outside only through the translucent member, so that the attenuation of light is suppressed compared to the case of emitting through the window. Can do.

  Further, in the ground light emitting device of the present invention, a plurality of protrusions may be provided on the upper surface of the light shielding member. By adopting such a configuration, a non-slip effect can be formed on the surface of the ground light-emitting device by the protrusion, or it can be used as a guidance path for the visually impaired.

  Further, in the ground light emitting device of the present invention, the light shielding member may be formed in a flat surface, and the light transmissive member may be formed in a box shape. By adopting such a configuration, the light source member and the light guide member are covered with the translucent member on the upper surface side, the side surface side, and the main surface side, and with the web of the base portion described later. That is, the entire periphery of the light source member and the light guide member is enclosed. Therefore, it is possible to prevent the light source member and the light guide member from being directly exposed to rain or dust as much as possible, thereby reducing the possibility of failure or damage.

  Furthermore, in the ground light emitting device of the present invention, the light shielding member may be formed in a box shape, and the light transmissive member may be formed in a flat plate shape. By adopting such a configuration, the light source member and the light guide member are covered with the light shielding member on the upper surface side, the side surface side, and the main surface side, and with the web of the base portion described later. That is, the entire periphery of the light source member and the light guide member is enclosed. Therefore, it is possible to prevent the light source member and the light guide member from being directly exposed to rain or dust as much as possible, thereby reducing the possibility of failure or damage.

  Furthermore, the light emitting device for ground according to the present invention includes a groove-shaped holding member that is attachable to the base and is formed so as to cover both the main surface and the bottom surface of the light guide member. By adopting such a configuration, the light emitted from both the main surface and the bottom surface of the light guide member is reflected by the inner surface or the groove bottom of the groove-shaped holding member, and the light is again incident on the light guide member. . Thereby, since the light emitted from the main surface or the bottom surface of the light guide member is guided again into the light guide member, it is possible to efficiently emit light from the upper surface of the light guide member while suppressing attenuation of light as much as possible. In addition, if the inner surface or groove bottom of the groove of the groove-shaped holding member is formed by a reflective surface or mirror surface, the light emitted from the main surface or the bottom surface of the light guide member is reflected and introduced into the light guide member more efficiently. The light can be emitted from the upper surface of the light guide member.

  Furthermore, in the light emitting device for ground according to the present invention, the groove-shaped holding member is formed with a support flange for supporting the light transmissive member, and the light transmissive member can be fixed to the support flange. Also good. By adopting such a configuration, the translucent member is supported by the supporting flange of the groove-shaped holding member, so that deformation of the translucent member can be suppressed when a person or an automobile is placed on the upper surface, The possibility that the translucent member is damaged can be reduced.

  Furthermore, in the light emitting device for ground according to the present invention, the light guide member may have diffusion dots formed on one or both main surfaces. By adopting such a configuration, light incident from the side surface or the bottom surface is diffused by the diffusion dots on the main surface, and light can be emitted from the top surface of the light guide member. Therefore, more uniform light can be emitted from the upper surface.

  Furthermore, in the light emitting device for ground according to the present invention, the light guide member may have diffusion dots or grooves formed on the upper surface. By adopting such a configuration, it is possible to diffuse light emitted from the upper surface of the light guide member and emit uniform light from the upper surface.

  Furthermore, in the light emitting device for ground according to the present invention, the base portion includes a web that divides a light source member installation region on the front surface side where the light source member is disposed and a lower layer region on the rear surface side where the wiring portion is disposed, It may be provided at both ends of the web, and may be provided with a flange that divides into the ground and is formed in an H shape. By arranging the light source member installation region on the upper side of the web, the light source can be arranged closer to the upper surface. For this reason, when light sources having the same intensity are used, stronger light can be emitted from the upper surface. Moreover, since the light source member installation area and the lower layer area are partitioned, the lower layer area becomes the back side of the web and cannot be viewed from the front side when installed on the ground. Therefore, if wiring etc. are arrange | positioned in a lower layer area | region, a possibility that wiring etc. may be visually recognized through a translucent member can be prevented. Therefore, even if the transparency of the translucent member is increased, it is possible to provide a ground light-emitting device that is excellent in appearance.

  Furthermore, in the light emitting device for ground according to the present invention, a lateral groove formed in the horizontal direction may be provided on a side surface of the base portion. By adopting such a configuration, when the ground light emitting device is placed in the ground, and the ready-mixed concrete is placed around it, the ready-mixed concrete is solidified while entering the groove. It is firmly fixed inside.

  Furthermore, in the light emitting device for ground according to the present invention, the light source member may be disposed on one or both side surfaces of the light guide member. By arranging the light source member on the side surface of the light guide member without being arranged on the bottom surface of the light guide member, it is possible to prevent the LEDs from being directly recognized when the light guide member is viewed from the top surface. Therefore, it is possible to provide a ground light-emitting device that is excellent in beauty. In addition, since light incident from the side surface is indirectly emitted from the upper surface through complicated diffusion and reflection in the light guide member, light with high diffusivity and high uniformity can be emitted from the upper surface.

  Furthermore, the light emitting device for ground of the present invention may include a light source holding member that holds the light source member, and the light source holding member may cover an upper surface in the vicinity of the side surface of the light guide member. In general, when light is emitted through the light guide member, the end of the light guide member emits light strongly, and bright lines may be generated or look dazzling. However, by covering the end portion, it is possible to prevent the end portion of the light guide plate from emitting intense light or the end portion from becoming dazzling.

  Further, the light source member may include a plurality of the light sources and a substrate on which the plurality of the light sources are arranged in series, and may be arranged on the bottom surface side of the light guide member. Good. By adopting such a configuration, light from the light source disposed on the bottom surface side of the light guide member reaches the top surface directly while diffusing, so that there is little light loss and strong light is transmitted to the light guide member. The light can be emitted from the upper surface.

  Furthermore, in the ground light-emitting device of the present invention, the light source member has a distance between adjacent light sources such that the distance between the light source and the upper surface of the light guide member is A, and the finger angle of the light source is θ. In this case, the distance may be 2 A · tan θ or less. By adopting such a configuration, when light emitted from the light source disposed on the bottom surface side of the light guide member is emitted from the top surface of the light guide member, the possibility that a region where no light is emitted is generated on the top surface can be reduced. The light can be emitted from the entire upper surface of the light guide member without any gap. Therefore, long light can be generated without generating a dark portion on the upper surface of the light guide member.

  Furthermore, the platform according to the present invention is provided by connecting a plurality of the above-described light emitting devices for ground in series. By adopting such a configuration, it is embedded so that only the upper surface is exposed instead of the white line on the station platform, and can be used as a warning display that emits a light when a train approaches. .

  According to the light emitting device for ground of the present invention, linear light can be emitted from the ground, and can be used as various signs.

FIG. 1 is a perspective view showing a light emitting device 100 for ground according to the first embodiment. FIG. 2 is an exploded perspective view of the ground light emitting device 100 according to the first embodiment. FIG. 3 is a diagram illustrating variations of the diffusion dots 24 of the light guide member 20. FIG. 4 is a cross-sectional view showing the AA portion of FIG. 1 of the ground light emitting device 100 according to the first embodiment. FIG. 5 is a perspective view showing an example in which the ground light emitting device 100 according to the first embodiment is installed on a platform of a station. FIG. 6 is a perspective view showing the ground light emitting device 100 according to the second embodiment. FIG. 7 is an exploded perspective view of the ground light emitting device 100 according to the second embodiment. FIG. 8 is a cross-sectional view showing the BB portion and the CC portion of FIG. 6 of the ground light emitting device 100 according to the second embodiment. FIG. 9 is a schematic diagram illustrating a method of embedding the base 40 according to the second embodiment in the ground. FIG. 10 is a perspective view showing an example in which the ground light emitting device 100 according to the second embodiment is installed on a platform of a station. FIG. 11 is a perspective view showing the ground light emitting device 100 according to the third embodiment. FIG. 12 is an exploded perspective view of the ground light emitting device 100 according to the third embodiment. FIG. 13: is sectional drawing which shows the DD part of FIG. 11 of the light-emitting device 100 for ground concerning 3rd Embodiment. FIG. 14 is a modification in which a plurality of protrusions 66 are formed on the upper surface according to the fourth embodiment, and a plurality of protrusions are formed on the upper surface of the ground light emitting device 100 according to the third embodiment as FIG. 14A fourth embodiment. FIG. 14B is a perspective view in which a plurality of protrusions 66 are formed on the light shielding member 60 of the second embodiment. 15 shows a light shielding member 60 according to the fourth embodiment, FIGS. 15A and 15B show a perspective view of a modified example in which a plurality of protrusions 66 are formed on the upper surface, and FIG. 15C shows a wavy shape on the upper surface. The perspective view which formed the unevenness | corrugation is shown. FIG. 16 is an exploded perspective view of the ground light emitting device 200 according to the fifth embodiment. FIG. 17 is a cross-sectional view showing the ground light emitting device 200 according to the fifth embodiment, cut at a position corresponding to the AA portion of FIG. FIG. 18 is a schematic diagram illustrating a state in which the positional relationship between the light guide member 20 and the light source member 10 is viewed from the main surface. FIG. 19 is a perspective view showing variations of the translucent member 50 and the light shielding member 60. FIG. 20 is a main surface side front view showing a variation of the light guide member 20. FIG. 21 is a view showing a further variation of the light guide member 20, FIG. 21A is a perspective view, and FIG. 21B is a main surface side front view. FIG. 22 is a view showing a further variation of the light guide member 20, FIG. 22A is a perspective view, and FIG. 22B is a front view of the main surface side. FIG. 23 is a perspective view showing a state in which a film or sheet 90 is provided on the light guide member 20. FIG. 24 is a schematic diagram showing another embodiment of a method for embedding the base 40 in the ground.

  An embodiment of a ground light emitting device according to the present invention will be described in detail with reference to the drawings. It should be noted that the embodiments and drawings described below exemplify a part of the embodiments of the present invention, and are not used for the purpose of limiting to these configurations, and do not depart from the gist of the present invention. Can be changed as appropriate. In addition, the same or similar code | symbol is attached | subjected to the corresponding component in each figure. In the present specification and claims, for convenience of explanation, the upper surface side, the side surface side, the bottom surface side, and the main surface side refer to the directions shown in FIG. Among components, it refers to the surface in each direction. The surface on the bottom side of the light guide member is referred to as “bottom surface”, the bottom surface in the groove of the groove-shaped holding member is referred to as “groove bottom”, and the bottom surface in the groove of the holding member such as the light source unit is referred to as “bottom”. The term “ground” not only means the surface of the earth, but also includes the surface of a building or the like, for example, the platform of a station, the landing of a staircase, or the like.

(First embodiment)
The ground light emitting device 100 according to the first embodiment will be described with reference to the drawings. FIG. 1 is a perspective view showing a light emitting device 100 for ground according to the first embodiment. FIG. 2 is an exploded perspective view of the ground light emitting device 100 according to the first embodiment. FIG. 3 is a diagram showing variations of the diffusion dots of the light guide member 20. FIG. 4 is a cross-sectional view showing the AA portion of FIG. 1 of the ground light emitting device 100 according to the first embodiment. As shown in FIG. 1, the ground light emitting device 100 according to the first embodiment mainly includes a light source member 10, a light guide member 20, a groove-shaped holding member 30 that holds the light guide member 20, a translucent member 50, and the like. A base 40 on which these are arranged is provided.

  As shown in FIG. 2, the light source member 10 includes a light source 11 made of a light emitting diode that emits light from a power source supplied from a power cord 13, and a substrate 12 to which the light source 11 is attached. The color of light of the light source 11 is not limited, and may be, for example, white, red, orange, yellow, green, blue, indigo or purple, or a combination of these colors. . Further, a white LED is used as the light source 11, and a color transparent film such as a transparent color film or a sheet 91 is disposed between the light source 11 and the light guide member 20, thereby forming a color in the light. May be.

  The light source member 10 is attached to the side surface 21 of the light guide member 20 by a light source holding member 70. The light source holding member 70 is formed in a substantially U-shaped cross section having two sandwiching portions 72 so that the light guide member 20 can be sandwiched, and the light source member 10 is formed between the sandwiching portions 72. Then, the light source member 10 is held on the side surface of the light guide member 20 by sandwiching the main surface 23 of the light guide member 20. When the light source holding member 70 is completed as the light emitting device 100 for the ground, it is sandwiched between a light transmissive member 50 and a light guide member 20, which will be described later, and is prevented from easily shifting or coming off. Is done. The light source member 10 is disposed on the side surface of the light guide member 20 so that a gap is opened between the light source member 10 and the upper surface of the translucent member 50. Accordingly, it is possible to prevent the light source member 10 from being damaged even if a heavy object passes through the upper surface and the translucent member 50 is slightly bent. Note that the fixing method of the light source and the like holding member 70 is not limited to this, and other fixing means (for example, fixing directly to the base 40 or directly attaching to the light guide member 20) is adopted. Is also possible. The two light source members 10 arranged on the side surfaces 21 on both sides of the light guide member 20 are connected by an installed power cord 13a. In addition, in order to reduce damage caused by water such as rain, the entire components of the light source member 10 may be subjected to drip-proofing or waterproofing such as covering with transparent silicon or the like.

  The light guide member 20 is formed in a long and thin rod-like substantially rectangular parallelepiped made of methacrylic resin, the light source member 10 is disposed on the side surfaces 21 on both sides, and the light of the light source 11 is incident from the side surfaces 21 and is on the ground side. Light is emitted from the upper surface 22. Since the upper surface 22 is formed in a long rectangular shape, the light emitted from the upper surface 22 is visually recognized in a long shape via the translucent member 50. As the material of the light guide member 20, for example, various materials such as methacrylic resins such as methyl methacrylate and ethyl methacrylate, acrylic resins such as methyl acrylate and ethyl acrylate, polycarbonate, and polyethylene can be used. If it is the material which has, it will not specifically limit. Furthermore, the light guide member 20 may add a particulate diffusing agent capable of diffusing visible light.

  As shown in FIGS. 2 and 3A, the light guide member 20 may be formed with diffusion dots 24 that lead out incident light as diffused light. In the first embodiment, as shown in FIG. 2 and FIG. 3A, the concave portion is recessed in a substantially quadrangular pyramid shape, and the positions corresponding to the bottom surface of the quadrangular pyramid are positioned on the main surfaces 23 on both sides of the light guide member 20. Provided. By providing the diffusion dots 24, the light incident from the side surface 21 of the light guide member 20 is diffused by the diffusion dots 24 and the light is guided from the upper surface 22. Each diagonal line connecting each vertex of the bottom surface of the quadrangular pyramid that forms the diffusion dot 24 is preferably provided so as to be substantially parallel to each side of the light guide member 20. If formed in this way, the light incident from the side surface has a relationship of intersecting with each side of the diffusing dot 24, so that the incident light can be easily diffused to the upper surface. The size of each quadrangular pyramid-shaped diffusion dot 24 may be the same or different. For example, as the distance from the light source 11 increases, each side of the quadrangular pyramid-shaped diffusion dot 24 may be gradually lengthened, or the depth of the quadrangular pyramid-shaped diffusion dot 24 may be gradually increased. By doing so, the amount of light that is bent becomes smaller at a position near the light source 11 where the light is strong, and the amount of light that is bent increases as the distance from the light source 11 increases. . In this embodiment, the length of each side of the diffusing dots 24 is about 0.6 mm and the depth is about 0.4 mm, and the pitch between adjacent quadrangular pyramid-shaped diffusing dots 24 is 2.0 mm. However, the present invention is not limited to this, and the length of each side of the quadrangular pyramid-shaped diffusion dot 24 may be, for example, 0.6 mm to 1.5 mm. The depth of the quadrangular pyramid-shaped diffusion dots may be 0.4 mm to 0.8 mm, for example. Further, the pitch between adjacent quadrangular pyramid-shaped diffusion dots 24 is not particularly limited, and can be appropriately selected from a pitch of about 1.5 mm to about 8.0 mm, for example. Preferably, the pitch is 1.5 mm to 3.0 mm.

  Further, the shape and size of the diffusion recess formed as the diffusion dot 24 are not particularly limited. A diffusion dot 24 having various diffusion recesses can be used as appropriate. Some specific examples are shown in the figure. FIG. 3B shows a diffusing dot 24 made up of a conical diffusing recess. FIG. 3C shows a diffusing dot 24 composed of a quadrangular prism-shaped diffusing recess. FIG. 3D shows a diffusing dot 24 composed of a quadrangular pyramid trapezoidal diffusing recess. FIG. 3E shows a diffusing dot 24 comprising a hemispherical diffusing recess. Further, although not shown, the diffusion recesses do not necessarily have to be dots but may be grooves. As a manufacturing method, various processing methods such as ultrasonic processing, heating processing, laser processing, and cutting processing can be employed. Further, for example, as shown in FIG. 3F, a convex bulging diffusion convex portion may be used. The diffusion convex portion is formed on the main surface so as to rise (clean) by clean printing, silk printing, or the like.

  As shown in FIG. 4, the groove-shaped holding member 30 is a long groove-shaped member having a substantially U-shaped cross section, and support flanges 31 are formed at right angles at both ends of the groove. The The interval between the grooves is formed so as to be the same as or slightly wider than the thickness of the light guide member 20, and the light guide member 20 can be fitted without a gap or slightly with a gap. As shown in FIG. 2, a plurality of first through holes 34 are formed in the groove bottom 33 in order to be fixed to the base 40 with a flat head screw 61. Further, the support flange 31 is formed with a first screw hole 35 having a threaded groove so as to fix the translucent member 50 and is used for fixing to the translucent member 50 described later. The inner surface 32 and the groove bottom 33 of the groove are formed on a reflection surface or a mirror surface.

  As shown in FIG. 4, the base 40 is fixed by a bolt (not shown) and a nut 67 with the back side of U-shaped steel having a U-shaped cross section, and has a substantially H-shaped cross section having a web 41 and a flange 42. It is formed into a long member having a shape. Since the ground light emitting device 100 may be used in a relatively vibrating part, the nut 67 may be a loosening prevention nut having high vibration resistance. The web 41 is divided into a light source member installation region α on the front surface side where the light source member 10 is disposed and a lower layer region β on the rear surface side where the wiring portion is disposed. The flanges 42 at both ends of the web 41 form wall surfaces in the ground when embedded, and are partitioned into the ground, the light source member installation region α, and the lower layer region β. The web 41 is formed with a second threaded hole 43 in which a threaded groove is cut at a position corresponding to the first through hole 34 of the groove-shaped holding member 30. The web 41 has a plurality of drain holes 44 through which water flows into the lower layer region β when water enters the inside of the translucent member 50. Further, a lateral groove 45 is formed on the surface of the flange 42 in the longitudinal direction. By forming the lateral grooves 45, when the ground light emitting device 100 is embedded in the ground, the biting property of the mortar placed between the base 40 and the ground is improved, and the unity with the ground is improved. Can be improved. Moreover, the laminated groove 45a is formed also in the boundary part which piled up the back side of U-shaped steel by diagonally chamfering the corner | angular part of U-shaped steel. By setting it as this structure, the biting property with the mortar laid between the base 40 and the ground like the horizontal groove 45 can be improved.

  The translucent member 50 is formed in a substantially rectangular parallelepiped container shape with colorless and transparent acrylic. The translucent member 50 may be colorless and transparent, or may be colorless and translucent. Moreover, the color may be given. The width of the translucent member 50 is formed to be the same width as the interval between the flanges 42 and 42 on the light source member installation region α side of the base 40, and the length of the translucent member 50 is in the longitudinal direction of the base 40. It is formed in the same way as the length. Therefore, the translucent member 50 completely covers the components disposed on the base 40 when attached to the base 40. The translucent member 50 may be formed at the same height as the flange 42 of the base 40 so as to completely cover the periphery of the light source member installation region α, as shown in FIG. A slight gap may be formed between the web 41 and the translucent member 50. In the case of opening the gap, it is desirable to fill the gap with a caulking agent, a sealing agent, or the like in order to prevent intrusion of water such as rainwater as much as possible. As shown in FIG. 3, the thickness of the translucent member 50 is formed so as to have the same surface as the end surface of the flange 42 when placed on the supporting flange 31. Thereby, when the ground light emitting device 100 is installed on the ground, the same surface as the ground can be formed. As shown in FIG. 2, a second through hole 51 is formed in the translucent member 50 so as to be fixed to the first screw hole 35 of the supporting flange 31.

  Each component formed in this way is assembled as follows. First, the groove-shaped holding member 30 is placed on the web 41 on the light source member installation region α side of the base 40, and the first through hole 34 and the second screw hole 43 are combined and fixed with the countersunk screw 61. Next, the light guide member 20 having the light source member 10 attached to the side surfaces 21 on both sides is fitted into the groove of the groove-shaped holding member 30. Next, in a state where the opening side of the translucent member 50 is set to the lower side, the base portion is provided so as to cover both the side surfaces, both main surfaces, and the upper surface of the light source member 10, the light guide member 20, and the groove-shaped holding member 30. The translucent member 50 is fitted into the 40 light source member installation region α side. In this state, the first screw hole 35 and the second through hole 51 are fixed by the countersunk screws 61. Thus, the ground light emitting device 100 is completed. In this state, the translucent member 50 is supported by the supporting flange 31 and is positioned at the same height as the flange 42.

  For example, as shown in FIG. 5, the ground light emitting device 100 formed in this way is embedded in a station platform or the like so that only the upper surface is exposed instead of the white line, and when a train approaches, Can be used as a warning display to emit light, or it can be used as a road guide light on a sidewalk or the like (not shown). At this time, the upper surface of the ground light emitting device 100 emits light upward as indicated by an arrow. The light emission shape at this time is emitted in a long shape by the light guide member 20 formed in a long shape. At this time, light is emitted to the upper surface via the translucent member 50, so that the outline is visually recognized as a slightly elongated, substantially straight line.

  According to the ground light emitting device 100 according to the first embodiment, the light guide member 20 has the bottom surface 25 and the main surface 23 covered with the groove-shaped holding member 30, so that the light incident from the side surface 21 by the light source 11. Is emitted only from the upper surface 22 of the light guide member 20. Furthermore, if the inner surface 32 and the groove bottom 33 of the groove of the groove-shaped holding member 30 are formed as a reflection surface or a mirror surface, the light emitted from the main surface 23 or the bottom surface 25 of the light guide member 20 is guided. Light can be emitted from the upper surface 22 of the light guide member 20 by being efficiently reflected back into the light guide member 20. At this time, since the main surface 23 of the light guide member 20 is formed with the diffusion dots 24, the light incident from the side surface 21 is diffused by the diffusion dots 24 and the light is emitted from the upper surface 22. Further, since the light guide member 20 is formed of a long member, one long linear light that is the shape of the upper surface 22 of the light guide member 20 can be emitted from the upper surface 22. Furthermore, the light source member 10 is disposed on the side surface of the light guide member 20 and is disposed with a gap between the light transmitting member 50 and the light transmitting member 50 disposed above. And the like, and even if pressure is applied to the upper surface of the translucent member 50, the pressure is prevented from being transmitted to the light source member 10. Thereby, the possibility of failure of the light source member 10 is reduced.

  Further, according to the ground light emitting device 100 according to the first embodiment, since the translucent member 50 is supported by the supporting flange 31 of the groove-shaped holding member 30, a person, an automobile, or the like is placed on the upper surface. Even if it is a case, the bending of the translucent member 50 can be suppressed and the possibility of breakage can be reduced. Moreover, since the translucent member 50 is formed in a container shape, the light source member 10 and the light guide member 20 are covered with the translucent member 50 on both side surfaces, both main surface sides, and the upper surface side. The bottom side is covered with the web 41 of the base 40. That is, the entire periphery of components such as the light source member 10 and the light guide member 20 is enclosed. Therefore, the light source member 10 and the light guide member 20 are prevented from being directly exposed to rain or dust. Therefore, the possibility that the light source member 10 and the light guide member 20 will fail can be reduced.

  Further, the light source member installation region α and the lower layer region β are partitioned by the web 41, and if the wiring or the like is arranged in the lower layer region β, the lower layer region β becomes the back side of the web 41 when installed on the ground, and from the front side. Since it cannot be visually recognized, the wiring or the like is not visually recognized through the translucent member 50. Therefore, even if the transmissivity of the translucent member 50 is increased, the ground light-emitting device 100 with excellent aesthetics can be obtained.

  In the first embodiment described above, the one having the diffusion dots 24 on the main surfaces 23 on both sides of the light guide member 20 is used. However, the present invention is not limited to this, and the diffusion dots 24 may be omitted. The diffusion dots may be provided only on one main surface.

  In the first embodiment described above, the inner side surface 32 and the groove bottom 33 of the groove-shaped holding member 30 are formed on the reflection surface or mirror surface. However, the inner surface 32 and the groove bottom 33 are not necessarily formed on the reflection surface or mirror surface. I do not care.

  Furthermore, in the first embodiment described above, a countersunk screw is used to fix the translucent member 50. However, in order to prevent tampering, a Torx (registered trademark) screw, a hexalobular screw, a hex lobe, etc. It is advisable to use screws that cannot be removed with a normal screwdriver or other tool.

  Furthermore, in the first embodiment described above, various fasteners such as a countersunk screw 61 and other bolts are used. However, silicon or the like may be appropriately injected and protected according to demands such as water resistance and dust resistance.

(Second Embodiment)
A ground light emitting device 100 according to a second embodiment will be described with reference to the drawings. FIG. 6 is a perspective view showing the ground light emitting device 100 according to the second embodiment. FIG. 7 is an exploded perspective view of the ground light emitting device 100 according to the second embodiment. FIG. 8 is a cross-sectional view showing the BB portion and the CC portion of FIG. 6 of the ground light emitting device 100 according to the second embodiment. As shown in FIG. 6 or FIG. 7, the ground light emitting device 100 according to the second embodiment mainly includes a light source member 10, a light guide member 20, a groove-shaped holding member 30 that holds the light guide member 20, and a light-transmitting property. A member 50, a light shielding member 60, and a base 40 on which these members are arranged are provided.

  As shown in FIG. 7, the light source member 10 includes a light source 11 that emits light from a power source supplied from a power cord 13 and a substrate 12 to which the light source 11 is attached. A light emitting diode is used as the light source 11. The color of light of the light source 11 is not limited, and may be, for example, white, red, orange, yellow, green, blue, indigo or purple, or a combination of these colors. . Further, a white LED is used as the light source 11, and a color transparent film such as a transparent color film or a sheet 90 is disposed between the light source 11 and the light guide member 20, thereby forming a color in the light. May be.

  The light source member 10 is disposed so as to face the side surface 21 of the light guide member 20 by the light source holding member 70. The holding member 70 such as the light source is formed with a sandwiching portion 72 so as to cover a part of the upper surface 22 near the side surface of the light guide member 20 and the main surface 23 on both sides. After the light source member 10 is adhered to the surface formed between the sandwiching portions 72 with a double-sided tape or the like, the light source 11 is disposed by the light source etc. holding member 70 so as to face the side surface of the light guide member 20. The light source 11 is fixed by fixing the holding member 70 to the base 40 with screws or the like. When the light source holding member 70 is completed as the light emitting device 100 for the ground, the light source holding member 70 is sandwiched between the light-transmissive member 50 and the light guide member 20 described later, so that the light source holding member 70 is not easily displaced or detached. It is formed. The power cord 13 is connected to the male connector 86a, and can be easily connected to the external power source by being inserted into the female connector 86b connected to the external power source. The two light source members 10 arranged on the side surfaces 21 on both sides are connected by a built-in power cord 13a having a connector 86c on the way. The fixing method of the light source and the like holding member 70 is not limited to this, and other fixing means may be employed. Each component and connector of the light source member 10 formed in this manner may be subjected to a drip-proofing process or a waterproofing process that covers with transparent silicon or the like in order to reduce water intrusion due to rain or the like.

  The light guide member 20 is formed in a long and thin rod-like substantially rectangular parallelepiped made of methacrylic resin. Light from the light source 11 disposed on the side surfaces 21 on both sides is incident, and light is emitted from the upper surface 22 on the ground side. The upper surface 22 is formed in a shape that is substantially the same as the shape of the light exit surface of the light shielding member 60 described later. As a material of the light guide member 20, for example, various materials such as methacrylic resins such as methyl methacrylate and ethyl methacrylate, acrylic resins such as methyl acrylate and ethyl acrylate, polycarbonate, and polyethylene can be used. The material is not particularly limited as long as it has a material. Furthermore, the light guide member 20 may add a particulate diffusing agent capable of diffusing visible light.

  As shown in FIG. 7, the light guide member 20 has a plurality of diffusion dots 24 formed on the main surfaces 23 on both sides, and allows incident light to be diffused by the diffusion dots 24 and emitted to the upper surface 22. The diffusing dots 24 are formed by concave portions that are recessed in a substantially quadrangular pyramid shape, and are provided so that positions corresponding to the bottom surfaces of the quadrangular pyramids are located on the main surfaces 23 on both sides of the light guide member 20. By providing the diffusion dots 24, the light incident from the side surface 21 of the light guide member 20 is diffused by the diffusion dots 24 and the light is guided to the upper surface 22. Each diagonal line connecting each vertex of the bottom surface of the quadrangular pyramid that forms the diffusion dot 24 is provided so as to be substantially parallel to each side of the light guide member 20. For this reason, since the incident light from the side surface intersects each side of the diffusion dot 24, the incident light can be easily diffused to the upper surface. The size of each quadrangular pyramid-shaped diffusion dot 24 may be the same or different. For example, as the distance from the light source 11 increases, each side of the quadrangular pyramid-shaped diffusion dot 24 may be gradually lengthened, or the depth of the quadrangular pyramid-shaped diffusion dot 24 may be gradually increased. By doing so, the amount of light that is bent is small at a position where the light is close to the light source 11 and the light is strong, and the amount of light that is bent increases as the distance from the light source 11 is increased. In this embodiment, the length of each side of the diffusing dot 24 is about 0.6 mm and the depth is about 0.4 mm, and the pitch between adjacent quadrangular pyramid-shaped diffusing dots 24 is 2.0 mm. . However, the present invention is not limited to this, and the length of each side of the quadrangular pyramid-shaped diffusion dot 24 may be, for example, 0.6 mm to 1.5 mm. The depth of the quadrangular pyramid-shaped diffusion dots may be 0.4 mm to 0.8 mm, for example. Further, the pitch between adjacent quadrangular pyramid-shaped diffusion dots 24 is not particularly limited, and can be appropriately selected from a pitch of about 1.5 mm to about 8.0 mm, for example. Preferably, the pitch is 1.5 mm to 3.0 mm.

  As a method of producing the quadrangular pyramid-shaped diffusion dots 24, ultrasonic waves in which a plurality of processing dots having a shape obtained by inverting the diffusion dots 24 on the front end surface are arranged in a matrix in a substantially rectangular parallelepiped light guide member. The processing horn is pressed perpendicularly to the light guide member 20 to form a quadrangular pyramid-shaped diffusion dot 24 having a shape reflecting the shape of the processing dot.

  Note that the shape and size of the diffusing dots 24 are not particularly limited, and diffusing dots 24 having various shapes can be appropriately employed. For example, it may be a diffusion recess recessed in a concave shape, or may be a convex bulging diffusion protrusion. The diffusion recess may be, for example, a recess having a quadrangular pyramid shape, a conical shape, a quadrangular pyramid shape, or a groove. As a manufacturing method, various processing methods such as ultrasonic processing, heating processing, laser processing, and cutting processing can be employed. The diffusion convex portion may be formed on the main surface so as to rise up by screen printing, silk printing, or the like (convex shape).

  In addition, a diffraction grating 26 is formed on the upper surface 22 of the light guide member 20 in order to improve planar light emission efficiency and light emission uniformity due to the lens effect. The diffraction grating 26 is formed with concavo-convex grooves arranged in parallel, and a sawtooth shape, a sine waveform, a rectangle, or the like can be used as the groove shape. Further, the upper surface 22 of the light guide member 20 is formed into a rough surface by applying a thin blast. By forming on a rough surface, the diffusion effect is enhanced.

  The groove-shaped holding member 30 is a long member that is slightly shorter than the light guide member 20, and support flanges 31 are formed at right angles at both ends of the substantially U-shaped groove-shaped member, as shown in FIG. The cross section is formed in a substantially inverted Ω shape. The supporting flange 31 has a first flange 31a formed relatively high and a second flange 31b formed low. The inner surface 32 and the groove bottom 33 of the groove are preferably formed on a reflective surface or a mirror surface. The interval between the grooves is formed so as to be the same as or slightly wider than the thickness of the light guide member 20, and the light guide member 20 can be fitted without a gap or slightly with a gap. As shown in FIG. 7, a plurality of first through holes 34 are formed in the groove bottom 33 in order to be fixed to the base 40 with a flat head screw 81. The second flange 31b is formed with a first threaded hole 35 having a threaded groove so that the translucent member 50 can be fixed.

  The base 40 is formed in a long member formed in a substantially H-shaped cross section having a web 41 and a flange 42 by superimposing the back side of a U-shaped steel having a U-shaped cross section. As shown in FIG. 8, the web 41 can partition a light source member installation region α on the front surface side where the light source member 10 is disposed and a lower layer region β on the rear surface side where the wiring portion is disposed. Moreover, when it embed | buries with the flange 42 of this both ends of this web 41, a wall surface can be formed in underground and the underground, the light source member installation area | region (alpha), and underground and lower layer area | region (beta) can be divided. The web 41 has a second threaded hole 43 in which a threaded groove is cut at a position corresponding to the first through hole 34 of the groove-shaped holding member 30. Further, the web 41 is formed with a plurality of drain holes 44 through which water flows into the lower layer region β when water enters the inside of the translucent member 50. Further, the web 41 is formed with a plurality of wrench holes 46 used when changing the height position of the base 40 when the base 40 is installed on the ground. Further, a lateral groove 45 is formed on the surface of the flange 42 in the longitudinal direction. By forming the lateral groove 45, when the ground light emitting device 100 is embedded in the ground, it is possible to improve the biting property of the mortar placed between the base 40 and the ground, It is possible to improve the unity.

  The translucent member 50 is formed in a substantially rectangular parallelepiped box shape from colorless and transparent polycarbonate. The width of the translucent member 50 is formed to be the same width as the interval between the flanges 42 on the light source member installation region α side of the base 40, and the length of the translucent member 50 is the same as the length of the base 40 in the longitudinal direction. It is formed in the same length. The translucent member 50 may be formed at the same height as the base flange 42 so as to completely cover the periphery of the light source member installation region α. As shown in FIG. You may form so that a clearance gap may fit between the web 41 and the translucent member 50 a little. In the case of opening the gap, it is desirable to fill the gap with a caulking agent, a sealing agent, or the like in order to prevent intrusion of water such as rainwater as much as possible. As shown in FIG. 7 or FIG. 8, the bottom surface of the translucent member 50 is formed with a recess 52 to which the light shielding member 60 is attached. The concave portion 52 is formed entirely except for a rib 56 having a width of about 1 mm on the periphery of the bottom surface and a long, substantially rectangular parallelepiped convex portion 53 formed at the approximate center of the concave portion 52. A plurality of hooks 54 for fixing the light shielding member 60 are formed on the rib 56. As for the translucent member 50, the unevenness | corrugation is formed in the box-shaped inner side according to each height so that it may contact | abut with the 1st flange 31a and the 2nd flange 31b of the flange 31 for support. A second through hole 51 is formed in a portion in contact with the second flange 31b so as to be fixed to the first screw hole 35 of the second flange 31b as shown in FIG. The translucent member 50 can be positioned at a predetermined position by fitting the unevenness inside the box shape and the supporting flange 31.

  The light shielding member 60 is formed of a black opaque polycarbonate having an opening 61 having the same shape as the convex portion 53 at the center, and is formed in a plate shape having the same size as the concave portion 52 of the translucent member 50. Further, a hooked portion 64 that can be fitted to the hook 54 is formed around the light shielding member 60 at a position corresponding to the hook 54. Therefore, the light shielding member 60 is accommodated in the recess 52 without any gap and is fixed by the hook 54. In this way, the light shielding member 60 prevents the light from the light source 11 from being led out to the outside except for the rib 56 and the convex portion 53, and mainly guides the light from the opening 61, and the opening 61 forms a light emitting surface. Will be. Since the opening 61 and the convex portion 53 are formed in a long rectangular shape, light can be emitted in a long shape from the upper surface 22.

  Each component formed in this way is assembled as follows. First, the base 40 is fixed at a planned installation location. To fix, as shown in FIG. 9A, a hole is formed in the ground Z where the installation is planned, and an iron plate 85 is laid in this hole. The height of the iron plate 85 can be adjusted with a bolt 83 for height adjustment. Therefore, as shown in FIG. 9B, the height of the base 40 is adjusted by inserting the wrench Y from the wrench hole 46 formed above and rotating the bolt 83. After adjusting the height, the mortar X is driven around and fixed to the ground Z. Then, the groove-shaped holding member 30 is placed on the web 41 on the light source member installation region α side of the base 40, and the first through hole 34 and the second screw hole 43 are fixed with a countersunk screw 81. Next, the light guide member 20 is fitted into the groove of the groove-shaped holding member 30. The light source holding member 70 is attached to the base 40 so that the light source member 10 faces the side surfaces 21 on both sides of the light guide member 20. Next, the translucent member 50 has the light source member 10, the light guide member 20, and the groove-shaped holding member 30 on both side surfaces, both main surfaces, and the upper surface with the opening side of the translucent member 50 facing down. It is fitted to the light source member installation region α side of the base 40 so as to cover the side. From this state, the first screw hole 35 and the second through hole 51 are fixed by a screwing member such as a screw 82. Finally, the light shielding member 60 is fitted into the recess 52 to complete the ground light emitting device 100. Since the screw 82 and the like are hidden by the light shielding member 60, the light-emitting device 100 for ground having a clean upper surface and good aesthetics can be obtained.

  For example, as shown in FIG. 10, the ground light emitting device 100 attached in this way is embedded in the station platform W or the like so that only the upper surface is exposed instead of the white line, and the train approaches. It can be used as a warning display that emits light by sending a signal, or it can be used as a road guide light by using it on a sidewalk or the like (not shown). At this time, the light emitting portion on the upper surface of the ground light emitting device 100 emits light upward as shown by an arrow and is visually recognized in a substantially straight line shape.

  According to the light emitting device for ground 100 according to the second embodiment, the light guide member 20 has the bottom surface 25 and the main surface 23 covered with the groove-shaped holding member 30, so that the light incident from the side surface 21 by the light source 11. Is emitted only from the upper surface 22 of the light guide member 20. Furthermore, since the inner surface 32 and the groove bottom 33 of the groove of the groove-shaped holding member 30 are formed as a reflection surface or a mirror surface, light emitted from the main surface 23 or the bottom surface 25 of the light guide member 20 is guided. The light can be efficiently reflected and reflected from the upper surface 22 of the light guide member 20. At this time, since the main surface 23 of the light guide member 20 is formed with the diffusion dots 24, the light incident from the side surface 21 is diffused by the diffusion dots 24 and the light is emitted from the upper surface 22. Moreover, since the light guide member 20 is formed of a long member, one long linear light can be emitted to the upper surface 22. Further, since the light shielding member 60 shields light except for the openings, the light is mainly derived from the light emitting surface formed by the openings 61, so that the light can be emitted in a long rectangular shape.

  According to the light emitting device for ground 100 according to the second embodiment, since the light shielding member 60 is only fitted by the hook 54, it can be easily removed, and the surface of the light shielding member 60 is damaged or the whole is damaged. Can be easily and quickly replaced. Further, if the screw 82 is removed after the light shielding member 60 is removed, the light guide member 20, the groove-shaped holding member 30, the translucent member 50, etc. attached to the base portion 40 remove the ground light emitting device 100 from the road surface. It can be replaced without removing it. Therefore, even when the light guide member 20, the groove-shaped holding member 30, the translucent member 50, or the like fails, the ground light emitting device 100 that can be easily repaired can be provided.

  Moreover, according to the ground light-emitting device 100 according to the second embodiment, the side surface 21 of the light guide member 20 is covered by the light source and the like holding member, so that the end portion of the light guide plate emits light and bright lines are formed. It is possible to prevent the end portion from becoming dull or being dazzled.

  Further, according to the light emitting device 100 for ground according to the second embodiment, the translucent member 50 is supported by the supporting flange 31 of the groove-shaped holding member 30, so that a person, an automobile, or the like is placed on the upper surface. Even if it is a case, the bending of the translucent member 50 can be suppressed and possibility of breakage can be reduced. Moreover, since the translucent member 50 is formed in a container shape, the light source member 10 and the light guide member 20 are covered with the translucent member 50 on both side surfaces, both main surface sides, and the upper surface side. The bottom side is covered with the web 41 of the base 40. That is, the entire periphery of the light source member 10 and the light guide member 20 is enclosed. Therefore, the light source member 10 and the light guide member 20 are prevented from being directly exposed to rain or dust. Therefore, the possibility that the light source member 10 and the light guide member 20 will fail can be reduced.

  Further, according to the ground light emitting device 100 according to the second embodiment, the light source member installation region α and the lower layer region β are partitioned by the web 41, and if the wiring or the like is arranged in the lower layer region β, the light source member installation region α is installed on the ground. In this case, since the lower layer region β is on the back side of the web 41 and cannot be visually recognized from the front side, the wiring or the like is not visually recognized through the translucent member 50. Therefore, even if the transmissivity of the translucent member 50 is increased, the ground light-emitting device 100 with excellent aesthetics can be obtained.

  In addition, in 2nd Embodiment mentioned above, although the thing which has the diffusion dot 24 in the main surface 23 of the light guide member 20 was used, it is not limited to this, The diffusion dot 24 does not need to be, and one side Alternatively, diffusion dots may be provided only on the main surface.

  In the second embodiment described above, the diffraction grating 26 is provided on the upper surface 22 of the light guide member 20, but the diffraction grating 26 may not be provided.

  Furthermore, in the second embodiment described above, the light shielding member 60 is made of black opaque polycarbonate. However, the invention is not limited to this, and it may be a color other than black as long as it is opaque. There is no particular limitation.

  Furthermore, in the second embodiment described above, a countersunk screw is used to fix the light shielding member 60. However, in order to prevent tampering, an ordinary driver such as a Torx (registered trademark) screw or a hexalobular screw is used. It is advisable to use screws that cannot be removed with tools such as.

  Furthermore, in the second embodiment described above, various fasteners such as countersunk screws 61 and other bolts are used. However, it may be protected by appropriately injecting silicon or the like according to requirements such as water resistance and dust resistance.

(Third embodiment)
A ground light emitting device 100 according to a third embodiment will be described with reference to the drawings. FIG. 11 is a perspective view showing the ground light emitting device 100 according to the third embodiment. FIG. 12 is an exploded perspective view of the ground light emitting device 100 according to the third embodiment. FIG. 13: is sectional drawing which shows the DD part of FIG. 11 of this light-emitting device 100 for grounds of 3rd Embodiment. As shown in FIG. 11 or FIG. 12, the light emitting device for ground 100 according to the third embodiment mainly includes a light source member 10, a light guide member 20, a groove-shaped holding member 30 that holds the light guide member 20, and a light transmitting property. The point provided with the member 50, the light shielding member 60, and the base 40 on which these members are arranged is the same as in the first and second embodiments, and the light source member 10, the light guide member 20, the light source holding member 70, and the base, respectively. Since 40 is the same as in the first and second embodiments, the description thereof is omitted. In the third embodiment, the groove-shaped holding member 30 used in the first embodiment will be described. However, the groove-shaped holding member 30 according to the second embodiment may be used. The light emitting device for ground 100 according to the third embodiment is different particularly in the translucent member 50 and the light shielding member 60.

  As shown in FIG. 12, the translucent member 50 is formed in a flat plate shape from colorless and transparent polycarbonate. The translucent member 50 is manufactured to a size that fits in a box-shaped light shielding member 60 described later. A convex portion 53 having an upper surface and a rectangular upper surface forming a light exit surface is formed at the approximate center of the translucent member 50. The translucent member 50 is provided with a positioning hole 57 for positioning so that the translucent member 50 does not move when assembled.

  The light shielding member 60 is formed of a black opaque polycarbonate into a substantially rectangular parallelepiped box shape having an opening 61 having the same shape as the convex portion 53 at the center. The width of the translucent member 50 is formed to be the same width as the interval between the flanges 42 on the light source member installation region α side of the base 40, and the length of the translucent member 50 is the same as the length of the base 40 in the longitudinal direction. It is formed in the same length. The translucent member 50 may be formed at the same height as the base flange 42 so as to completely cover the periphery of the light source member installation region α, as shown in FIG. You may form so that a clearance gap may fit between the web 41 and the translucent member 50 a little. When making a gap, it is desirable to fill the gap with a caulking agent, a sealing agent or the like in order to prevent the intrusion of water such as rain water as much as possible as in the above-described embodiment. On the bottom surface of the light shielding member 60, a protrusion 65 is formed that fits with the positioning hole 57 described above. By fixing the positioning hole 57 of the translucent member 50 into the protrusion 65, the protrusion 65 is fixed with a bolt. The translucent member 50 and the light shielding member 60 are fixed to the base material 40. Thus, the light shielding member 60 prevents the light from the light source 11 from being led to the outside except for the opening 67, and the light is led to the outside from the opening 67 through the convex portion 53 of the translucent member 50. The upper surface of the convex portion 53 forms a light emitting surface. Since the opening 67 and the convex portion 53 are formed in a long rectangular shape, light can be emitted in a long shape. Since the periphery of the light emitting surface is covered with the light shielding member 60, rectangular light with a clear outline can be emitted.

(Fourth embodiment)
Hereinafter, embodiments applicable to or applicable to the ground light emitting device 100 according to the first embodiment and the third embodiment will be described.

  In the first to third embodiments, an anti-slip process may be performed in which a plurality of cylindrical protrusions 66 are formed on the upper surface. For example, in the case of the light emitting device for ground 100 according to the third embodiment, as an application example, as shown in FIG. The surface may be formed so as not to slip. In the case of the ground light emitting device 100 according to the second embodiment, as an application example, as shown in FIG. 14B, a plurality of protrusions 66 are formed on the upper surface of the plate-shaped light shielding member 60.

  The arrangement of the plurality of protrusions 66 on the upper surface is not particularly limited, and may be provided in a lattice shape as shown in FIG. 15A. In addition, the individual shapes of the plurality of protrusions 66 are not limited, and may be a rectangular protrusion 66 as shown in FIG. 15B, for example, a star shape or a triangle (not shown). ). If a plurality of protrusions are formed with the same shape and the same pitch as the protrusions of the visually impaired block, they can also be used for visually impaired persons.

  Furthermore, the anti-slip process does not necessarily have to be constituted by a plurality of protrusions. As shown in FIG. 15C, the upper surface of the light shielding member 60 is provided with undulations or the upper surface is provided with a satin finish (not shown). .) Or a combination of these.

  Although the said 4th Embodiment was demonstrated as an application example of 2nd Embodiment and 3rd Embodiment, it is applicable also to 1st Embodiment. When applying to 1st Embodiment, it can be set as the ground light-emitting device 100 which has the same function by providing a several convex part in the translucent member 50. FIG.

(Fifth embodiment)
Next, a fourth embodiment of the ground light emitting device 200 according to the present invention will be described with reference to FIGS. 16 to 18. FIG. 16 is an exploded perspective view of the ground light emitting device 200 according to the fifth embodiment. FIG. 17 is a cross-sectional view showing the ground light emitting device 200 according to the fifth embodiment, cut at a position corresponding to the AA portion of FIG. FIG. 18 is a schematic diagram illustrating a state in which the positional relationship between the light guide member 20 and the light source member 10 is viewed from the main surface. The fifth embodiment differs from the light emitting device for ground according to the second embodiment in that the light source member 10 is disposed on the bottom surface.

  As shown in FIG. 16, the light source member 10 includes a plurality of light sources 11 and a substrate 12 to which the plurality of light sources 11 are attached. The substrate 12 has a length that is the same as or slightly shorter than the length in the longitudinal direction of a holder 75 such as a light source described later, and a plurality of light sources 11 are arranged in series. The distance between the adjacent light sources 11 is not particularly limited, but preferably, the distance between the light source 11 and the upper surface 22 of the light guide member 20 is S as shown in FIG. When the finger light angle is θ, the distance may be 2S · tan (θ / 2) or less.

  The light guide member 20 is formed in a long and thin rod-like substantially rectangular parallelepiped made of methacrylic resin. The light source member 10 is disposed on the bottom surface 25 of the light guide member 20, the light of the light source 11 is incident from the bottom surface 25, and the light is led out from the top surface 22. The material of the light guide member 20 is the same as that of the light guide member 20 of the second embodiment.

  As shown in FIG. 17, the light source holder 75 is formed of a long metal member having a substantially U-shaped cross section. As shown in FIG. 16, the light source holder 75 has a length that is the same as the length of the groove-shaped holding member 30 in the longitudinal direction, and a width that is the same as the interval of the grooves of the groove-shaped holding member 30. Is formed. Therefore, the light source holder 75 is fitted into the groove-shaped holding member 30 with almost no gap. After the light source member 10 is disposed on the bottom 76 of the light source holder 75, the light guide member 20 is disposed with a gap between the light source member 10 as shown in 17.

  The respective components formed as described above are assembled as follows to obtain the ground light emitting device 200. The groove-shaped holding member 30 is placed on the web 41 on the light source member installation region α side of the base 40, and the first through hole 34 and the second screw hole 43 are combined and fixed with a countersunk screw (not shown). . On the other hand, the light source member 10 is attached to the bottom 76 of the light source holder 75 and the light guide member 20 is disposed above the light source member 10. Then, the light source holder 75 to which the light source member 10 and the light guide member 20 are attached is fitted into the groove of the groove-shaped holding member 30. Next, in a state where the opening side of the translucent member 50 is on the lower side, the both side surfaces, both main surfaces, and the upper surface of the light source member 10, the light guide member 20, and the groove holding member 30 are covered, The translucent member 50 is fitted into the light source member installation region α side of the base 40. From this state, the first screw hole 35 and the second through hole 51 are fixed by the screw 82. Finally, the light shielding member 60 is fitted into the recess 52 to complete the ground light emitting device 100. The ground light emitting device 200 thus manufactured can be used as a warning display on a platform of a station or a ground guide light, as in the second embodiment.

  In the ground light emitting device 200 according to the fifth embodiment formed in this way, the optical characteristics until the light incident on the light guide member 20 from the light source member 10 diffuses into the upper surface 22 of the light guide member 20 are shown in FIG. This will be explained based on. The light emitted in the right direction from the first light source 11 a having the finger light angle θ is diffused in the range of the angle θ / 2 with respect to the vertical direction and introduced into the light guide member 20. When the introduced light directly reaches the upper surface 22, when the distance between the first light source 11a and the upper surface 22 of the light guide member 20 is S, the upper surface position of the perpendicular line of the first light source 11a and the position of the emitted light Is derived from a position separated by S · tan (θ / 2). Similarly, the light emitted in the left direction from the adjacent second light source 11b is similarly diffused. Therefore, if the distance between the adjacent second light sources 11b is within 2S · tan (θ / 2), the light guide member 20 is used. The light overlaps in the state of reaching the upper surface 22 of the light, and light is derived from the entire upper surface 22. As described above, when the light emitted from the light source 11 is emitted from the upper surface 22 of the light guide member 20 by being arranged within 2 S · tan (θ / 2), a region where no light is emitted is generated on the upper surface 22. The possibility can be reduced, and light can be emitted from the upper surface 22 of the light guide member 20 without a gap. Therefore, it is possible to reduce the occurrence of a dark portion on the upper surface 22 of the light guide member 20.

  According to the ground light emitting device 200 according to the fifth embodiment of the present invention, light from the light source 11 disposed on the bottom surface 25 side of the light guide member 20 reaches the top surface directly and in a short distance while diffusing. The light loss is small, and strong light can be emitted from the upper surface of the light guide member.

  Further, according to the light emitting device for ground 200 according to the fifth embodiment, since the translucent member 50 is directly attached to the support flange 31 of the groove-shaped holding member 30 as in the second embodiment, Even if a person, a car, or the like is placed on the vehicle, the possibility of damage can be reduced. Furthermore, since the light guide member 20 is disposed with a gap between the light source member 10, it is possible to prevent pressure from being applied to the light source member 10 even when a person, an automobile, or the like is placed on the upper surface. The possibility that the light source member 10 is damaged can be reduced. The translucent member 50 is formed in a container shape, and the light source member 10 and the light guide member 20 are covered with the translucent member on the four side surfaces and the upper surface side, and covered with the web of the base portion 40 on the bottom surface 25 side. The whole will be enclosed. Therefore, the possibility that the light source member 10 and the light guide member 20 are directly exposed from rain and dust can be reduced, and the possibility of failure can be reduced.

  Moreover, since the light source member installation area | region (alpha) and lower layer area | region (beta) are divided by the web 41 and a lower layer area | region becomes the back side of the web 41 and it cannot be visually recognized from the front side when installed in the ground, a translucent member Wiring etc. are not visually recognized through 50. Therefore, even if the transmissivity of the translucent member 50 is increased, the ground light-emitting device 200 having excellent aesthetics can be obtained.

  In addition, this invention is not limited to the structure of the said embodiment, A various change and improvement can be performed, without deviating from the meaning and range of this invention.

  Furthermore, in the above-described embodiment, the container-shaped member is used as the translucent member 50. However, the present invention is not limited to this, and a plate that covers only the upper surface may be used.

  Further, in the above-described embodiment, the colorless and transparent polycarbonate is used as the translucent member 50. However, the present invention is not limited to this, and may be colored and transparent as long as it has optical transparency. However, a diffusible material such as a milk half plate may be used. By using the milk half plate, the light diffused by the light guide member 20 can be further diffused by the milk half plate, so that more uniform light can be emitted. Moreover, as the translucent member 50, the whole translucent member 50 does not necessarily need to have a light transmittance, and the raw material which permeate | transmits only one part may be used for it. For example, with the translucent member 50 attached to the base 40, only the upper part of the light guide member 20 is formed of a transparent material such as polycarbonate, and both sides thereof are made of a metallic member. It may be formed. By adopting such a configuration, it is possible to emit linear light with a clearer outline. Moreover, since the area | region of a polycarbonate can be formed narrowly, it becomes strong with respect to the pressure from an upper surface, and even if a heavy article places, possibility that the translucent member 50 will be damaged can be reduced.

  Furthermore, in the embodiment described above, the light guide member 20 having the diffusion dots 24 is adopted as the light guide member 20 of the first embodiment, but the diffusion dots 24 may not be provided in the light guide member 20. Further, the diffusion dots 24 are not limited to the main surface, and the diffusion dots 24 may be formed on the bottom surface 25 and the top surface 22 of the light guide member 20. Moreover, you may use what carried out the embossing and the blasting instead of the spreading | diffusion dot.

  Further, in the above-described embodiment, the light emitting surface of the light shielding member 60 is formed in the opening 61, and the translucent member 50 has the convex portion 53 formed in the same shape as the opening 61. For example, as shown in FIG. 19, a transparent member, for example, a window 62 made of tempered glass, polycarbonate, or the like is provided as a light emitting surface of the light shielding member 60, as shown in FIG. A position 50 corresponding to the light emitting surface may be formed on a flat surface. In addition, as the material of the light shielding member 60, a material having an uneven non-slip surface may be used, or a woody material may be used when taking a landscape into consideration in a park or the like. Furthermore, in order to improve durability, it may be made of metal.

  Furthermore, in the above-described embodiment, the rectangular parallelepiped light guide member 20 is used. However, as shown in FIG. 20A, a guide having a mountain-shaped notch 27 formed on the bottom surface 25 so as to be easily reflected upward. The optical member 20 may be used, or one having a gently inclined surface from the center of the light guide member 20 toward both side surfaces as shown in FIG. 20B may be used, as shown in FIG. 20C. As described above, the light guide member 20 in which the longitudinal grooves 27 are formed may be used. Furthermore, when adopting an embodiment of a type in which the light source member is arranged on the side surface 21, the light guide member 20 is compared with the center of the area of the side surface 21 on both sides where light is incident, as shown in FIG. In order to reduce the loss of incident light and to improve the light reflection efficiency to the upper surface 22 that is the light exit surface, the bottom surface 25 is formed to have a trapezoidal cross section. May be. Further, as shown in FIG. 22, the light guide member 20 has a rectangular side surface so that the areas of the side surfaces 21 on both sides on which light is incident are increased, and a bottom surface 25 at the longitudinal center of the light guide member 20. You may form so that this part may become the trapezoid cross section which protrudes. By forming in this way, the cross-sectional area of the light guide plate 20 is gradually reduced toward the longitudinal center. By forming the cross-sectional area so as to be gradually reduced in this way, the amount of light emitted from the central portion of the upper surface 22 can be increased. In FIG. 20, FIG. 21 and FIG. 22, a part or all of the diffusing dots 24 is omitted.

  In the above-described embodiment, the inner surface 32 and the groove bottom 33 of the groove-shaped holding member 30 are formed on the reflection surface or the mirror surface, but the inner surface and the groove bottom 33 of the groove-shaped holding member 30 are used. 23, instead of forming a reflection surface or a mirror surface, as shown in FIG. 23, a reflection film or sheet 37 is provided on each of the main surface 23, the bottom surface 25, and the upper surface 22 on the portion 22b covered by the light source holding member 70, respectively. May be provided. Thereby, it has the same effect as what formed the inner surface 32 and the groove bottom 33 of the groove-shaped holding member 30 in the reflective surface or the mirror surface.

  Furthermore, in the above-described embodiment, when adjusting the height position of the base 40 when fixing the base 40 to the planned installation location, an iron plate is laid on the ground where the installation is planned, Although the height is adjusted, as shown in FIG. 24, the height adjusting bolt 83 can be directly fitted into the bottom surface of the hole in the ground Z at the planned installation location. A structure for supporting the web 41 may be adopted. By adopting such a configuration, the height of the base portion 40 can be adjusted by adjusting the protruding amount of the bolt 83.

  As shown in the above-described embodiment, it can be used as a light emitting device installed on the ground.

DESCRIPTION OF SYMBOLS 10 ... Light source member, 11 ... Light source, 11a ... 1st light source, 11b ... 2nd light source,
12 ... Board, 13 ... Power cord, 13a ... Installation power cord,
20 ... light guide member, 21 ... side surface, 22 ... upper surface,
22b: a portion covered with a holding member such as a light source, 23 ... a main surface,
24 ... diffusion dots, 25 ... bottom surface, 26 ... diffraction grating, 27 ... longitudinal groove,
30 ... Channel-shaped holding member, 31 ... Supporting flange, 31a ... First flange,
31b ... 2nd flange, 32 ... inner surface, 33 ... groove bottom, 34 ... 1st through-hole,
35 ... 1st screw hole, 37 ... Reflective film or sheet, 40 ... Base part,
41 ... Web, 42 ... Flange, 43 ... Second screw hole, 44 ... Drain hole,
45 ... Transverse groove, 45a ... Laminated groove, 46 ... Wrench hole, 50 ... Translucent member,
51 ... second through hole, 52 ... concave, 53 ... convex, 54 ... hook,
56 ... ribs, 57 ... positioning holes, 60 ... light shielding members, 61 ... flat head screws,
62 ... Window, 64 ... Hook part, 65 ... Projection part, 66 ... Projection,
70 ... light source holding member, 72 ... clamping part, 75 ... light source holder,
76 ... Bottom, 81 ... Flat head screw, 82 ... Screw, 83 ... Bolt, 85 ... Iron plate,
86a ... male connector, 86b ... female connector, 86c ... connector,
90 ... sheet or film, 100,200 ... light emitting device for ground,

Claims (15)

A light source member having an LED as a light source;
A base on which the light source member is disposed;
A light guide member that introduces light from the light source member from the bottom surface or side surface and derives it from the top surface;
A translucent member arranged to cover the upper surface of the light guide member;
A groove-type holding member that can be attached to the base and is formed so as to cover both the main surface and the bottom surface of the light guide member, and is formed with a supporting flange that supports the light transmissive member;
A light exit surface that is exposed when embedded in the ground and emits light from the light guide member to the upper surface side, and is formed to shield the light from the light guide member and cover the support flange. An upper surface having a light shielding surface made of a light shielding member;
With
The light guide member has a long upper surface and derives long light from a part of the upper surface. The ground light-emitting device according to claim 1, wherein a window made of a transparent member is disposed in the center of the light shielding member. The light shielding member, the light is emitting surface is formed in the opening, the translucent member is ground according to claim 1, characterized in that a convex portion formed on the opening identical in shape Light emitting device. The ground light-emitting device according to claim 1, wherein a plurality of protrusions are provided on an upper surface of the light shielding member. 5. The ground light emitting device according to claim 1, wherein the light shielding member is formed in a flat surface, and the light transmissive member is formed in a box shape. 6. The light blocking member is formed in a box shape, the translucent member is ground for light emitting device according to any one of claims 1, characterized in that it is formed in a plate shape 4. The light emitting device for ground according to any one of claims 1 to 6, wherein the light guide member has diffusion dots formed on one or both main surfaces. The ground light-emitting device according to claim 1, wherein the light guide member has diffusion dots or grooves formed on an upper surface thereof. The base is a web that divides a light source member installation area on the front surface side where the light source member is arranged and a lower layer area on the back side where the wiring part is arranged, and is installed at both ends of the web, The ground light emitting device according to any one of claims 1 to 8, wherein the ground light emitting device is formed in an H shape. The light emitting device for ground according to claim 9, wherein a lateral groove formed in a horizontal direction is provided on a side surface of the base portion. The ground light-emitting device according to claim 1, wherein the light source member is disposed on one or both side surfaces of the light guide member. The ground according to any one of claims 1 to 11, further comprising a light source holding member that holds the light source member, and the light source holding member covers an upper surface in the vicinity of a side surface of the light guide member. Light emitting device. The light source member has a plurality of the light sources and a substrate on which the plurality of the light sources are arranged in series, and is arranged on a bottom surface side of the light guide member. The light emitting device for ground according to any one of 1 to 10. When the distance between the adjacent light sources is A and the finger angle of the light source is θ, the distance between the adjacent light sources is 2 A · tan (θ / 2). The ground light-emitting device according to claim 13, wherein the distance is: A platform of a station, wherein a plurality of ground light emitting devices according to any one of claims 1 to 14 are connected in series.

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