JPH05179621A - Manufacture of light emitting body and pavement block having this light emitting body embedded - Google Patents

Abstract

PURPOSE:To increase the fracture strength and prevent a light emitting body from being damaged in the surface polishing operation by providing a transparent body consisting of a synthetic resin material in a protruded manner from the end part of a holder consisting of a hard material. CONSTITUTION:A light source 3 consisting of an LED chip or the like is surrounded by a cylindrical case 2 made of a synthetic resin or the like, and further surrounded by a cylindrical holder 11 consisting of a hard material of stainless steel or the like. Transparent bodies 8-10 consisting of a transparent synthetic resin material are filled inside of the holder 11, and the upper surfaces are protruded from the end part on the light emitting surface side, constituting a light emitting body 1. A hard material having higher wearproof property than the material forming blocks for pavement is used for the hard material of this holder 11. This light emitting body 1 is embedded in the blocks for pavement, and polishing is achieved so that the transparent body 8 protruded from the end part of the holder 11 may be exposed, and the surface is finished smooth.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to road traffic signs and decorations,
The present invention relates to a light emitting body suitable for a display device such as a sign illumination and a method for manufacturing a block in which the light emitting body is embedded.

[0002]

2. Description of the Related Art Conventionally, a road such as a pedestrian crossing, a lane, a stop line, and a median strip is displayed by drawing a line with paint. With such a display, it is difficult to see it at night. Therefore, a paint mixed with glass beads that reflect the light of the car was used. However, recently, it is becoming more and more common to use a light emitting device for display to make it easier to visually recognize.

As a light emitting device, recently, a block in which a light emitting body having a built-in light source such as an LED is integrated with a composite material such as resin mortar is embedded in a road without using a special tool. ..

[0004]

By the way, when such a light emitting device is embedded in a road, there is a problem that the surface of the light emitting device is worn by a vehicle, a person or the like passing along the road. In particular, when the surface of the light-emitting body of the light-emitting device is worn away, the light source such as the LED inside the light-emitting body is gradually exposed to the surface, which may damage the light source.

There is also a light emitting device in which a light emitting body is embedded in a hard protective cylinder made of metal or the like in order to prevent this abrasion, but when finishing the surface of the light emitting device, a hard protective cylinder protruding from the light emitting body surface is finished. However, there was a problem for road embedding.

[0006]

In order to achieve the above object, the invention according to claim 1 is characterized in that a cylindrical holder made of a hard member for accommodating a light source, and a transparent synthetic material filled in at least the inside of the holder. It is characterized in that a light-transmitting body made of a resin material and the light-transmitting body projects from an end of the holder on the light emitting surface side.

According to a second aspect of the invention, in the light-emitting body according to the first aspect, the hard member of the cylindrical holder has a higher wear resistance than the molded member of the paving block.

According to a third aspect of the present invention, there is provided a light-emitting body provided with a light-transmitting body made of a light-transmitting synthetic resin material protruding from an end portion on the light-emitting surface side of a cylindrical holder made of a hard member containing the light-emitting body. Supported in the mold, and after pouring concrete into the mold to solidify, polish the concrete surface where only the translucent body protruding from the end of the holder is exposed, until the end of the holder is exposed. It is characterized by polishing and finishing the surface to be smooth.

According to a fourth aspect of the present invention, in the method for manufacturing a paving block having the light-emitter embedded therein according to the third aspect, the protruding portion of the light-transmitting body of the light-emitter is provided at the bottom of the mold. It is characterized by being supported by. According to a fifth aspect of the present invention, in the method for manufacturing a paving block in which the light emitting body according to the third aspect is embedded, the light emitting body engages an engaging portion formed on the light emitting body with an internal reinforcing bar of the paving block. It is characterized by being supported in the formwork.

[0010]

According to the first and second aspects of the present invention, the light-transmitting body made of the light-transmitting synthetic resin material is provided from the light emitting surface side end of the hard holder having higher wear resistance than the pavement block molding member. Is projected, so by utilizing this projected thickness,
Provided is a luminous body capable of polishing the surface of a paving block.

Further, according to the inventions of claims 3 to 6, since the illuminants of claims 1 to 2 are supported at a predetermined position in the mold and concrete is poured to form blocks, light is emitted. The protruding height of the translucent synthetic resin portion protruding on the light emitting surface side of the body can be made constant. When the surface of the block is finish-polished, the projecting transparent synthetic resin portion and the concrete portion, which are softer than the holder, may be shaved, so that the finishing operation is easy.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a partial cross-sectional side view of the light emitting body 1, 2 is a cylindrical case made of a material such as PBT resin having a stepped portion formed therein, and a plurality of protrusions 2a on the side wall on the bottom side. Two
, a through hole 2b for inserting an electric wire is provided in the central portion. Reference numeral 3 denotes a light-emitting light source unit such as an LED chip attached to an insulating substrate 4 locked to a step portion in the case 2, and 5 is attached to the insulating substrate 4 and connected to the LED chip 3. Leads 6 are electric wires which are inserted into the through holes 2b and connected to the leads 5. Also,
7 is a light diffusing plate provided on the light emitting surface side of the LED chip 3, and 8, 9 and 10 are translucent bodies made of translucent epoxy resin or the like filled in the voids in the tubular case 2. Case 2
The tip portion C of the translucent body 8 projects by a thickness A from the end portion of the case 2 on the light emitting surface side. Reference numeral 11 denotes a cylindrical holder made of a material harder than the case 2 such as stainless steel, which is provided so as to surround a portion of the cylindrical case 2 excluding the tip portion C, and 12 covers a hole 2b portion of the case 2 for inserting an electric wire. Is a tubular waterproof cover made of beer chloride material or the like, which is prevented from falling off by the plurality of projections 2a, 2a on the side wall, and 13 is an adhesive for fixing the waterproof cover.

Since the cylindrical case 2 made of a material such as synthetic resin is surrounded by the cylindrical holder 11 made of a hard material such as stainless steel, the luminous body 1 is strong and durable against mechanical external force. It has an excellent structure.

Further, as will be described later, when the light emitter is embedded in, for example, a paving block, the case 2 protruding by a thickness A from the end on the light emitting surface side and the tip C of the light transmitting body 8 are finally formed. Is cut and polished, and after polishing, the ends of the cylindrical holders of the light-emitters, which are embedded, are finished so as to be exposed on the surface.

FIG. 2 is a partial cross-sectional side view showing one step of the method for manufacturing the pavement block 20 of the present invention. A plurality of light emitting bodies 1, 1, ... Shown in FIG. It is aligned and embedded with concrete 21. The concrete formwork 31 is surrounded by a bottom frame 32, side frames 33, and an upper frame 34, and on the bottom frame 32, the outer diameter of the case 2 of the light emitting bodies 1, 1, ... (Inner diameter of the holder 11). A recess 36 having the same diameter as B and a depth shallower than the protruding thickness A of the light emitting body 1,
A locking frame 35 having 36, ... Formed at predetermined intervals is mounted. The embedding of the light emitters 1, 1, ... Into the concrete is carried out in the recesses 36, 36, ... Of the locking frame 35 from the ends of the light emitters 1, 1 ,. The protruding tip C made of a material such as synthetic resin is inserted, and the concrete 21 that has been kneaded in the locked state is poured and solidified into a block.

When the block 20 molded in this way is removed from the frame 31, as shown in FIG. 3 (a), the translucent body 8 of each of the light emitting bodies 1, 1, ... The tip C is in a state of protruding from the surface of the concrete 21 by the depth of the recess 36. The tip portion C and the surface 22 of the concrete 21 surrounding the tip portion C are polished to be smooth. Then, when the tip portion C and the surface 22 of the concrete 21 become substantially smooth and the end portion of the holder 11 is exposed or near to be exposed, polishing is stopped. The end of the holder 11 has a recess 36,
Since the depths of 36, ... Are uniform, they appear on the same surface as shown in FIG. 3 (b). At this time, not only the tip portion C made of synthetic resin but also the surface 2 of the concrete 21
Although 2 is easily polished by a method such as grinding with a grindstone or shot blasting, the end portion of the holder 11 made of hard stainless steel is not easily polished.

FIG. 4 is a cross-sectional view showing a state in which the surface of the block 20 is polished and finished, and the end portion of the holder 11 is exposed on the surface 23. Reference numeral 24 is a wiring housing formed on the side opposite to the light emitting surface. After that, the electric wires 6, 6, ... Derived from the respective light-emitting bodies 1, 1, ... Are protected by a bushing 13 in the shape of a cone or the like and are taken out of the block 20 to be stored in the wiring storage portion 24. Cement 25 is filled and embedded to complete the block 20 in which the luminous body is embedded as shown in FIG.

5 and 6 show another embodiment of the method of manufacturing a block according to the present invention, which is shown in FIGS.
The same parts as those in FIG. In the case of the present embodiment, light emitting bodies 1, 1, ... Are attached to a reinforcing bar for concrete to form a block.
In this case, the luminous body 1 has a substantially oval-shaped locking portion 2d formed on the bottom of the case 2 with a neck portion 2c having a diameter smaller than that of the case 2 separated. Then, the reinforcing bar / holding body 41 made of an iron plate or the like
The above-mentioned luminous bodies 1, 1, ...
・ Install. This attachment is performed by inserting the small diameter portion of the substantially oval locking portion 2d of the light emitting body 1 into the cut groove 42, and rotating the light emitting body 1 by 90 degrees so that the reinforcing bar / holding body 41 is attached to the case 2. The bottom part and the locking part 2d are sandwiched and locked.

Then, the reinforcing bar / holding body 41 holding the light emitting body 1 is bridged between the reinforcing bars 40 and 40 arranged in parallel, and the reinforcing bars 40 and 40 are arranged in a mold (not shown) to concrete. Complete the pouring block.

According to this manufacturing method, the reinforcing bars for concrete are utilized and the concrete blocks are formed with reference to the neck of the case that is molded and has a small size difference. Therefore, the luminous bodies 1, 1, ... Since the depth of embedding in the concrete is almost the same, the degree of exposure of the holders of the light emitters 1, 1, ... Can be made substantially the same when polishing the concrete surface, and the light emission intensity from the block is made uniform. it can.

The present invention is not limited to the above-described embodiment, and for example, in the above-mentioned embodiment, the holder surrounding the light-emitting body is formed of stainless steel, but the holder is not limited to stainless steel, and may be made of another material harder than concrete, such as metal or ceramic. It may be. Moreover, although the LED chip is used for the light emitting source,
Not limited to the ED chip, it may be electroluminescence, a light bulb, a discharge lamp, or the like. Further, although the present invention is used as a paving block, it is not limited to being used for a road surface, but can be applied to a traffic sign on the road side, a sidewalk decoration, a sign lighting, and the like.

Furthermore, the means for fixing the light-emitting body in the mold is not limited to that of the embodiment, and the electric wire of the light-emitting body may be held by a reinforcing bar or the like and concrete may be poured to form a block.

[0024]

As described above in detail, according to the light-emitting body of the invention of claims 1 and 2, since the light-transmitting body made of synthetic resin is provided so as to project from the end of the holder made of a hard member, the light-emitting body is provided. It is possible to provide a light-emitting body having high breaking strength without damaging the light-emitting body during polishing of the surface of the light-emitting device having the embedded therein.

Further, according to the method of manufacturing a paving block of the present invention, the light emitting body is locked to the locking frame in the formwork or the reinforcing bar for solidifying the concrete by pouring. , It is possible to arrange the luminous body at a predetermined position in the concrete block, and when finishing the surface of this block, it is possible to align the ends of the holders of multiple luminous bodies on the same surface, which is excellent in wear resistance. Block for paving can be manufactured.

Further, if the embedding depth varies among a plurality of light emitters, the light emission illuminance distribution from the block becomes non-uniform and bright and dark portions occur, but in the block of the present application, the embedding depth of each light emitter is different. Since they are the same, there are various advantages such that the illuminance of light emitted from the block can be made substantially uniform.

[Brief description of drawings]

FIG. 1 is a partially longitudinal side view showing a light emitting body of an embodiment according to the present invention.

FIG. 2 is a partial cross-sectional side view showing a part of the process of the method for manufacturing a paving block according to the manufacturing method of the third and fourth aspects of the invention.

FIG. 3 is a partial cross-sectional side view showing a part of the process of the method for manufacturing the paving block according to the manufacturing method of the third and fourth aspects of the invention.

FIG. 4 is a partial cross-sectional side view showing a paving block manufactured by the manufacturing method according to the third and fourth aspects of the invention.

FIG. 5 is a perspective view showing a part of the process of another method for manufacturing a paving block according to the invention of claims 3 and 5.

6 is a partial cross-sectional side view showing an enlarged main part of FIG.

[Explanation of symbols]

1 ... Light emitter, 2 ... Case, 2d ... Locking part, 3 ... LE
D chip (light-emitting light source section), 8, 9, 10 ... Translucent body, 1
1 ... Holder, 20 ... Block, 21 ... Concrete, 23 ... Surface, 31 ... Formwork, 35 ... Locking frame, 36 ...
..Concave, 40 ... Reinforcing bar, 41 ... Reinforcing bar / support

Claims (5)

[Claims] 1. A cylindrical holder made of a hard member for accommodating a light source; a transparent body made of a transparent synthetic resin material, which is filled in the holder and projects from an end portion on the light emitting surface side. A light-emitting body comprising: 2. The hard member of the tubular holder has higher wear resistance than the molded member of the paving block.
Luminous body. 3. A light-transmitting synthetic resin material, which has a cylindrical holder made of a hard member containing a light source, is filled in the holder, and is projected from an end on the light-emitting surface side. The body supports the light emitting body protruding from the end on the light emitting surface side of the holder in the mold, and after pouring concrete into the mold to solidify, only the translucent body protruding from the end of the holder A method for manufacturing a paving block in which a light-emitter is embedded, characterized in that a concrete surface exposed at the end is polished, and the end of the holder is exposed until the surface is smoothed. 4. A light-transmitting body projecting from an end on the light-emitting surface side of a holder of the light-emitting body is engaged with a recess provided in the bottom of the mold to be supported in the mold. Item 4. A method for manufacturing a paving block in which the luminous body of paragraph 3 is embedded. 5. The paving block with a light emitter embedded therein according to claim 3, wherein an engaging portion formed on the light emitter is engaged with an internal rebar of the paving block to support the paving block in the formwork. Manufacturing method.