Construction structure and method of underground lighting

Abstract

To provide a construction structure and method of underground lighting such as road signal lights and landscape lighting.SOLUTION: The construction structure of underground lighting of the present invention includes a mortar layer on the bottom, a protective case installed on top of the layer, an exposed part installed in the case, and a control unit that controls the exposed part. A construction method of underground lighting includes a root cutting step for flattening the ground after digging a position where underground lights are to be installed, a protective case installation step, an exposed part installation step for fixing the exposed part to the protective case, a control unit installation step for connecting an option board to a traffic signal controller to install a controller, an inspection step for checking the operating status of the exposed part after connecting the controller and the exposed part, and a finishing step for tidying up areas around the construction site.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an installation structure and method for an underground buried light, and more particularly to an installation structure and method for an underground buried light which simplifies the on-site installation process when installing underground buried lights such as road signal lights and landscape lighting, prevents corrosion due to external impacts and various chemical substances, and makes it possible to prepare for defects that occur after installation, such as cracks caused by differences in contraction rates due to seasonal temperature changes. [Background technology]

[0002] Road signal lights are installed on both sides of a crosswalk in the crossing direction, allowing people looking down to see the crosswalk signals, and are one of the traffic safety measures that minimize the occurrence of traffic accidents.

[0003] As the use of smartphones has increased recently, more and more people are looking down to concentrate on their smartphone screens and not paying attention to their surroundings. These people are called Smombies (Smartphone + Zombie), and Smombies do not check traffic lights when crossing the street, which can lead to traffic accidents.

[0004] So, to prevent traffic accidents involving Smonbees, road signal lights are installed at the entrances and exits of pedestrian crossings, allowing people to recognize the current pedestrian crossing signals without lifting their heads. These road signal lights have LEDs for generating signals installed inside a transparent or semi-transparent case, and the LEDs emit red or green light to indicate the current pedestrian crossing stop or walk signal.

[0005] However, if the above-mentioned road signal lamp is directly installed on the ground, not only moisture from the ground may penetrate into the inside of the road signal lamp, causing the road signal lamp to break down or malfunction, but also external impacts or corrosion caused by chemicals may occur, resulting in reduced durability.

[0006] In addition, in the past, the exposed parts of underground lamps were assembled and installed on site, which made the work process complicated and posed another problem that malfunctions could occur due to assembly errors. Furthermore, because the exposed parts were connected using external connectors and the electric wires were exposed to the outside of the exposed parts, pressure on the exposed parts could cause damage such as the wire insulation coming off, which could lead to defects such as short circuits and electricity leakage.

[0007] Meanwhile, as a result of searching for prior art related to the present invention, several patent documents were found, some of which are as follows:

[0008] Patent Document 1 discloses a road signal lamp including an upper cover made of a transparent material; a guide cover that is connected to the bottom surface of the upper cover and is made of an opaque material with an accommodation space formed therein; a substrate installed at a position corresponding to the bottom surface of the guide cover; an LED having one end connected to the substrate and the other end penetrating the guide cover to irradiate light through the upper cover; a moisture-proof member installed inside the accommodation space; and a heat dissipation module connected to the bottom surface of the substrate, and having improved heat dissipation and moisture-proofing functions that prevent light from being directly irradiated into the driver's field of vision as well as improved heat dissipation and moisture-proofing efficiency.

[0009] Patent Document 2 discloses a case consisting of an upper case and a lower case, which is placed on the ground on one side of a boundary stone that separates a sidewalk from a road; an LED panel formed at an incline on the inside of the upper case to separate the space inside the case and to work with individual heat dissipation and pedestrian crossing signal lights; and a reflective coating layer formed on the side wall surface inside the upper case to reflect light emitted from the LED panel; The LED road signal light disclosed includes: a watertight gasket installed between the upper and lower cases to prevent external moisture from entering the interior and to prevent breaks or shorts caused by corrosion of the circuit pattern formed on the LED panel; a plurality of expansion members installed on the inside of the lower part of the lower case to move hot air from the space partitioned by the LED panel installed inside the case and dissipate heat; and a cover installed by a fixing member on the bottom of the lower case to prevent the expansion members from being exposed to the outside and to allow them to be installed at the bottom of the lower case, allowing pedestrians walking while looking at their smartphones with their heads down to easily recognize the walking signal that is lit up on the road surface of the waiting line of the crosswalk, thereby providing convenience for pedestrians walking at a crosswalk.

[0010] Patent Document 3 discloses an LED light-emitting road signal lamp that is embedded in a pedestrian road or a crosswalk so that its upper surface is exposed to the ground, the LED light-emitting road signal lamp comprising: an upper case made of synthetic resin, the upper surface being formed as a square or rectangular shape and four side surfaces being integrally formed, and the lower end being entirely open; a metal heat dissipation case having an outer side that is in close contact with the inner side of the upper case and inserted into the upper case; and an LED panel on which a plurality of LED light-emitting elements are arranged and inserted into the heat dissipation case; the heat dissipation case is open at both the upper and lower ends, The present invention discloses an LED light-emitting road signal light having an underground heat dissipation means for dissipating heat generated inside the light to the ground and preventing breakdowns or shortening of lifespan due to heat generated during the light-emitting process, the LED light-emitting road signal light comprising: a heat dissipation bottom for dividing and sealing an upper space and a lower space; a heat dissipation bottom for transferring heat generated from the LED panel from the upper space to the lower space; a heat dissipation partition wall for dividing the lower space vertically into a plurality of spaces; and a heat dissipation partition wall connected at right angles to four sides of the heat dissipation case and a lower surface of the heat dissipation bottom so that the heat transferred through the heat dissipation bottom can be released into the ground.

[0011] Patent Document 4 discloses an LED road signal light that includes an upper mounting block, an LED panel, a separator, an upper conductive heat sink, a lower mounting block, a lower conductive heat sink, a gasket member, and a road installation base, and provides pedestrians with an additional pedestrian signal that lights up on the road surface at the waiting line of a pedestrian crossing, thereby improving pedestrian convenience and preventing traffic accidents. At the same time, the heat generated from the LED panel (the lighting part) is conducted to the road installation base, dissipating and cooling the heat, thereby extending the lifespan of the LEDs and significantly improving their durability, and minimizing the occurrence of malfunctions and damage caused by moisture penetration. The LED road signal light has heat dissipation and moisture-proof functions. [Prior art documents] [Patent documents]

[0012] [Patent Document 1] Korean Patent No. 10-2191729 [Patent Document 2] Korean Patent No. 10-2126461 [Patent Document 3] Korean Patent No. 10-2281080 [Patent Document 4] Korean Patent No. 10-2137236 Summary of the Invention [Problem to be solved by the invention]

[0013] The present invention has been devised to solve the problems of the prior art described above, and has an object to provide an installation structure and method for underground buried lights, such as road signal lights and landscape lighting, which simplifies the on-site installation process, prevents corrosion due to external impacts and various chemical substances, and makes it possible to prepare for defects that occur after installation, such as cracks caused by differences in contraction rates due to seasonal temperature changes.

[0014] Another object of the present invention is to provide a construction structure and method for underground buried lights that can predict problems such as load, waterproofing, insulation, corrosion, etc. that may occur during the installation of underground buried lights such as road signal lights, landscape lighting, and road sign studs, and can provide a before service, and can reduce costs and shorten construction time as well as improve quality and safety through an OSC (Off-Site Construction) construction method. [Means for solving the problem]

[0015] In order to achieve the above-mentioned object, the construction structure of the underground buried light of the present invention is characterized by including a mortar layer at the bottom; a protective case installed on the top of the mortar layer to protect the product; an exposure part that displays a red or green signal and is installed in the protective case; a silicone mold that is filled between the protective case and the exposure part and fixes the exposure part; and a control part that consists of an option board connected to a traffic signal controller and a controller connected to the exposure part and controls the exposure part.

[0016] In addition, according to the construction structure of the underground buried light of the present invention, the exposed portion is assembled in a factory to correspond to the installation length of the underground buried light and supplied to the site, and is characterized in that the electric wires are interconnected in the middle section so that external exposure is minimized.

[0017] The method for constructing an underground lamp according to the present invention includes a root-cutting process for digging a position for installing the underground lamp and then leveling the ground; a mortar pouring process for pouring mortar mixed with silica fume into the ground where the root-cutting has been completed and then leveling the ground; a case installation process for seating a protective case on top of the mortar to protect the product; an exterior part installation process for seating the exterior part of the underground lamp in the protective case and then filling silicone between the exterior part and the protective case to fix the exterior part to the protective case; a control part installation process for connecting an option board to a traffic signal control device and installing a controller; an inspection process for connecting the controller and the exterior part and then checking the operating status of the exterior part; and a finishing process for tidying up the area around the construction site.

[0018] Furthermore, according to the underground lighting installation method of the present invention, in the root cutting process, excavation is carried out after removing the sidewalk blocks between the road boundary stones and the braille blocks in order to install road signal lights, and is characterized in that excavation is carried out to a width of 10 cm and a depth of 10 cm or more.

[0019] Furthermore, according to the underground lamp installation method of the present invention, the mortar pouring step is characterized in that the mortar is poured to a depth of 4 cm or more so that the depth from the top surface is the same as the height of the protective case. Effect of the Invention

[0020] The underground lamp installation structure and method of the present invention simplifies the on-site installation process by installing the exposed part assembled at a factory on-site, and the protective case installed on the ground protects the exposed part, which not only prevents corrosion from external impacts and various chemicals, but also has the effect of making it possible to prepare for defects that occur after installation, such as cracks caused by differences in shrinkage rates due to seasonal temperature changes.

[0021] Furthermore, according to the underground lamp construction structure and method of the present invention, underground lamps such as road signal lamps, landscape lighting lamps, and road sign studs are preassembled and delivered to the site, which not only enables before-service, but also prevents problems such as load, waterproofing, insulation, and corrosion that may occur during installation. In addition, by applying the OSC (Off-Site Construction) method, it is possible to reduce costs and shorten construction time, as well as improve quality and enhance safety.

[0022] In addition, according to the underground buried light installation structure and method of the present invention, the electric wires between the exposed parts are connected at the middle level without using an external connector, which eliminates problems caused by water leakage and prevents defects caused by peeling of the wire coating due to pressure on the product, or short circuits and electric leakage due to damage.

[0023] In addition, according to the construction structure and method of the underground lamp of the present invention, the inner and outer casings that constitute the exposed part are separated, and when a malfunction occurs, only the inner casing can be replaced, allowing for rapid recovery and minimizing recovery costs. In addition, defective products can be used as recycled materials, which is environmentally friendly.

[0024] In addition, according to the underground lamp installation structure and method of the present invention, the exposed parts are connected at the factory, and the road signal lamp is shipped in an assembled state and supplied to the site, which simplifies on-site installation and minimizes problems that occur during installation.

[0025] In addition, according to the underground lamp construction structure and method of the present invention, after thoroughly excavating the ground, mortar is poured in and a protective case is installed, so that underground lamps including road signal lamps are firmly fixed and will not fall off, and the display surface of the road signal lamp is aligned with the sidewalk surface, which has the effect of preventing safety accidents.

[0026] Furthermore, according to the underground lighting construction structure and method of the present invention, when constructing road signal lights, excavation is performed between the boundary stone and the braille block at the crosswalk entrance to install the underground lights, which has the effect of making it possible to check the road signal lights just before entering the crosswalk.

[0027] Furthermore, according to the construction and method of the underground lamp of the present invention, silicon is filled between the protective case and the exposed portion to form a silicon mold, which has the effect of stably fixing the exposed portion. [Brief description of the drawings]

[0028] [Figure 1] FIG. 1 is a flow chart showing a method for installing an underground lamp according to the present invention. [Diagram 2] FIG. 2 is a process diagram showing an outline of the process up to the installation of the exposed portion by the construction method for an underground buried lamp according to the present invention. [Diagram 3] FIG. 3 is a reference diagram showing a construction rail for constructing an exposed portion connected to a protective case in the construction method for an underground buried lamp according to the present invention. [Figure 4] FIG. 4 is a cross-sectional view illustrating an installation structure of an underground lamp according to the present invention. [Diagram 5] FIG. 5 is a configuration diagram showing a control unit of a road signal light in an underground lamp installation structure according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] Hereinafter, the construction and method of an underground lamp of the present invention will be described with reference to the accompanying drawings.

[0030] The terms used in the present invention are terms defined in consideration of their functions in the present invention, and may vary depending on the intentions or practices of a user or operator. Therefore, the definitions of these terms should be interpreted according to the meanings and concepts consistent with the technical matters of the present invention.

[0031] Furthermore, the embodiments of the present invention do not limit the scope of the invention, but are merely illustrative of the elements presented in the claims of the present invention, and are embodiments that include elements that are included in the technical idea throughout the specification of the present invention and can be replaced as equivalents with the elements in the claims.

[0032] In the following embodiments, optional terms are used to distinguish one component from another, and the components are not limited to the terms.

[0033] Therefore, in describing the present invention, detailed descriptions of related publicly known techniques that may unnecessarily obscure the gist of the present invention will be omitted.

[0034] In order to explain a preferred embodiment of the present invention, Figure 1 is a flow chart illustrating the installation method of an underground lamp according to the present invention, Figure 2 is a process chart illustrating the process up to installing the visible part according to the installation method of an underground lamp according to the present invention, Figure 3 is a reference diagram showing an installation rail for installing the visible part connected to a protective case in the installation method of an underground lamp according to the present invention, Figure 4 is a cross-sectional view illustrating the installation structure of an underground lamp according to the present invention, and Figure 5 is a configuration diagram showing the control unit of a road signal light in the installation structure of an underground lamp according to the present invention.

[0035] As shown in FIG. 4, the construction structure of the underground lamp according to the present invention includes a mortar layer (10) at the bottom, a protective case (20) installed on the top of the mortar layer (10) to protect the product, an exposed part (30) that displays a red or green signal and is installed in the protective case (20), a silicon mold (40) that is filled between the protective case (20) and the exposed part (30) to fix the exposed part (30), and a control unit (50) that controls the exposed part (30).

[0036] It is preferable that the exposed portion 30 is prefabricated in a factory to correspond to the installation length of the underground lamp, thereby minimizing on-site construction. It is also preferable that the electric wires are interconnected at the middle of the exposed portion 30 so that the external exposure is minimized.

[0037] In this regard, the Off-Site Construction (OSC) method has recently been drawing attention as a smart construction technology for innovation and productivity improvement in the construction industry. The OSC method is a method in which large materials and components are manufactured in factories and assembled and installed on-site, and it is possible to minimize on-site processes without being affected by the surrounding environment and weather, which not only reduces costs and shortens construction time compared to on-site construction, but also easily achieves effects such as improved quality and enhanced safety.

[0038] As shown in FIG. 5, the control unit (50) is composed of an option board (51) connected to the traffic signal controller (60) and a controller (52) connected to the display unit (30) so as to control the display unit (30) and connected to the option board (51) for communication. The option board (51) is connected to the already installed traffic signal controller (60) and is connected through cooperation with the police. This traffic signal controller is a 2010 model traffic control signal controller, and in the case of a 2004 model traffic signal controller, the option board (51) must be connected after replacing it with a 2010 model traffic signal controller. This is because in the case of the 2004 model traffic signal controller, the road signal lights are directly connected to the pedestrian signal lights, so if an abnormality occurs in the pedestrian signal lights, the road signal lights will not operate normally either. The controller (52) is connected to the surface portion (30) so as to be able to control underground lights such as road signal lights, and is also connected to an option board (51) via RS-485 communication, and is installed in a control box.

[0039] Meanwhile, the underground lamp construction method of the present invention for forming the underground lamp construction structure of the present invention includes a root cutting process (S10), a mortar pouring process (S20), a case installation process (S30), an exposed part installation process (S40), a control unit installation process (S50), a control unit connection and inspection process (S60), and a finishing process (S70), as shown in Figures 1 and 2.

[0040] The root cutting process (S10) is a process of digging the ground where the underground lamp is to be installed and then leveling the ground. The process involves removing the sidewalk blocks between the road boundary stones and the braille blocks, and then digging. The excavation is performed to a width of 10 cm and a depth of 10 cm or more depending on the size of the road signal lamp, and after the excavation is completed, the ground is leveled and leveled.

[0041] The mortar pouring step (S20) is a step of pouring mortar mixed with silica fume on the ground where the root cutting has been completed, and then leveling it, and it is preferable to pour the mortar 4 cm or more so that the depth from the top surface is the same as the height of the protective case (20). In other words, since the height of the protective case (20) is 6 cm, mortar is poured until the depth is 6 cm and then leveled.

[0042] At this time, a self-leveling level mortar is used, and it is preferable to use one that contains 3-10% silica fume with an average particle size of 0.15 μm. This improves dispersibility and water reduction effects due to the ball bearing effect of the spherical particles of silica fume, and improves watertightness, strength, and chemical resistance due to the filling effect of silica fume filled between the mortar particles, preventing strength loss due to moisture in the ground. In addition, the self-leveling effect maintains the horizontal level, allowing the product to be installed correctly, and the protective case for protecting the product can be firmly fixed to the ground underground.

[0043] Here, silica fume mixed into mortar is used as an admixture to improve the strength of concrete through its fine filling effect of filling voids and discontinuous areas between cement particles to densify them, and through its pozzolanic reaction with calcium hydroxide that occurs during cement hydration. It is known as an essential material for producing underwater concrete, concrete that requires durability, and especially high-strength concrete.

[0044] The case installation step (S30) is a step of installing a protective case (20) on the top of the mortar to protect the product, and it is preferable to use a protective case (20) made of POSMAC material to prevent corrosion due to oxidation in the ground. After installing the protective case (20) on the mortar layer formed by pouring the mortar, it is preferable to check the flatness of the protective case (20) and install the exposed part (30) so that the exposed part (30) can maintain its flatness.

[0045] The protective case (20) made of POSMAC material prevents the product including the exposed part (30) from falling out of the protective case (20) due to external impact, and also prevents the product from corroding. The protective case (30) made of POSMAC material is 6 cm high and 10 cm wide, and is configured with right-angled bends on both sides in the width direction. The protective case (20) made of POSMAC material can be divided into a small size with a length of 30 cm, a medium size with a length of 120 cm, and a large size that can be cut to size as needed.

[0046] The exposed part installation step (S40) is a step of seating and fixing the exposed part (30) of the underground lamp inside the protective case (20), and after seating the exposed part (30), silicon is filled between the exposed part (30) and the protective case (20) to fix the exposed part (30) to the protective case (20). At this time, the exposed part (30) is installed so that the arrow formed on the exposed part (30) points towards the footpath, and the flatness and bonding state of the exposed part (30) must be checked.

[0047] The exposed portion (30) is preferably divided into an inner case (32) made of PC material with a lens portion (33) on the upper surface capable of surface emission and a built-in LED, and an outer case (31) made of aluminum material with excellent heat dissipation performance to protect the inner case (32) and dissipate heat from the inner case (32) to the outside. This allows only the inner case (32) to be replaced when a malfunction occurs, which not only enables rapid recovery but also minimizes recovery costs. Furthermore, defective products can be used as recycled materials, contributing to environmental protection.

[0048] In addition, the exposed portion (30) is assembled in a factory to correspond to the installation length of the underground lamp and delivered to the site, and it is preferable that the electric wires are interconnected in the middle so that the external exposure is minimized. Therefore, the on-site installation process can be simplified as much as possible, and defects that occur during installation can be minimized. In addition, it is possible to prevent the waterproofing of the electric wires by using a waterproof connector during on-site installation, and also to prevent malfunctions caused by the electric wires being compressed by the product.

[0049] Although the above has described the case where the protective case (20) and the projection part (30) are separately installed, it is also possible to pre-assemble the protective case (20) and the projection part (30) at a factory and complete the road signal lamp of a certain length before shipping, so that the road signal lamp can be installed on-site all at once.

[0050] Normally, if unit road signal lights, each about 300 mm long, are installed individually, uneven settlement can occur after installation, causing the product to move. If the product moves in this way, it can cause inconvenience to pedestrians or problems such as pinching the electric wires. Therefore, by fixing four unit road signal lights to one rail to create a road signal light, the convenience of on-site installation is improved and the road signal lights can be protected from external sources of pollution even after installation.

[0051] For the installation of the road signal lamp, the installation rail 80 and the assembly rail 70 shown in FIG. 3 are used.

[0052] The assembly rail (70), as shown in Fig. 3(a), has the same shape as the protective case (20), and is configured so that both ends in the width direction of the bottom surface are bent upward. In this case, when used in an electric wire lead-in section, a groove (75) can be formed in the bottom surface of the end portion so that the electric wire is not damaged by the shear force between the sidewalk block and the rail, as shown in Fig. 3(b). In other words, the electric wire is buried in the space below the sidewalk block from the part of the assembly rail (70) where the groove (75) is formed, so that the shear force between the sidewalk block and the rail is not applied to the electric wire.

[0053] The construction rail (80) is intended to secure an installation space for the assembly rail (70), and as shown in Fig. 3(c), both ends in the width direction of the bottom surface are bent upwards, and a number of holes (85) are drilled in the bottom surface. The height of the side surface is manufactured to be the same as that when the road signal lamp and the assembly rail (70) are connected.

[0054] However, considering that the area between the road boundary stones and the braille blocks forms an inclined surface, it is preferable to form the road signal lights so that they are inclined downward toward the road boundary stones. Therefore, it is preferable to form the assembly rail (70) and the construction rail (80) so that the heights on both sides in the width direction are slightly different.

[0055] In addition, when applied to a curved crosswalk, the assembly rail (70) and the construction rail (80) must be bent into a fan shape for construction, so the assembly rail (70) and the construction rail (80) may have notches (73), (83) formed at regular intervals according to the length of the unit road signal light. Therefore, the assembly rail (70) and the construction rail (80) can be cut on-site using a hand grinder to cut the notches (73), (83).

[0056] It is more preferable to form the notches 73, 83 not only with solid lines but also with square cuts at regular intervals in the notches 73, 83, which makes it easier to cut the notches 73, 83 on-site using a hand grinder and makes it easier to visually confirm that the notches have been cut by the blade of the hand grinder. In this case, it is preferable to insert a spacer material into the square cuts to prevent damage to the electric wires.

[0057] When installing a road signal light using the assembly rail (70) and the construction rail (80), a certain amount of mortar is poured into the part where the root cutting has been completed, and then the construction rail (80) is used to secure an installation space. After removing the construction rail (80), the assembly rail (70) with the road signal light assembly installed thereon is installed in the installation space.

[0058] Specifically, after pouring about 50 mm of mortar into the space where the roots have been excavated to a depth of about 100 mm, the construction rail (80) is placed on the surface of the mortar and then shook left and right, aligning the left and right sides of the construction rail (80) with the top of the braille block and the bottom of the road boundary stone. At this time, since the height of the road signal lamp is 60 mm, 10 mm of mortar remains, but it flows into the inside of the construction rail (80) through the hole (85) formed in the bottom of the construction rail (80).

[0059] The mortar that has flowed into the inside of the construction rail (80) is compressed using the palm of the hand or a hammer, and the remaining mortar is pushed out to other construction areas using tools including a trowel, so that the mortar inside is at the same height as the bottom surface of the construction rail (80).

[0060] Therefore, accurate and easy construction is possible even when there is an incline or the length is long, and in curved construction sections, construction can be performed by simply bending the construction rail (80) into a fan shape through the notch portion (83).

[0061] Thereafter, the construction rail (80) is removed, and the assembly rail (70) is installed so that the road signal lamp can be fixed to the assembly rail (70).

[0062] The control unit installation step (S50) is a step of installing the control unit (50) for controlling the display unit (30), and involves connecting an option board (51) to the already installed traffic light controller and installing a controller (52) in cooperation with the police. The option board (51) connects the signal light controller and the controller (52) and is connected to the 2010 model traffic light controller. In the case of the 2004 model traffic light controller, the road signal lights are directly connected to the pedestrian signal lights, so if an abnormality occurs in the pedestrian signal lights, the road signal lights will also not function properly. Therefore, if a 2004 model traffic light controller is installed, it is necessary to replace it with a 2010 model traffic light controller and then connect the option board (51).

[0063] The inspection process (S60) is a process for finally inspecting the performance of the exposed part (30) through a test operation after connecting the electric wires of the controller (52) and the electric wires of the exposed part (30), and checking the lighting and blinking of the green and red lights. Then, fine sand is filled in the gap between the protective case (20) and the ground to prevent separation between the protective case (20) and the ground.

[0064] The finishing process (S70) is a process of tidying up the area around the construction site, in which all tools and materials used are collected and a soft broom is used to thoroughly clean the exposed area (30) and the surrounding area.

[0065] The construction of a road signal lamp by the above-mentioned underground lamp construction method of the present invention will be described below.

[0066] In order to install road signal lights, the sidewalk blocks between the road boundary stones and the braille blocks at the crosswalk are removed, and then the ground is excavated to a depth of more than 10 cm. At this time, the width of the excavation surface is 10 cm so that it corresponds to the exposed part. Once excavation is completed, the ground is leveled and made flat.

[0067] Next, mortar containing 3-10% silica fume is poured on the ground to form a mortar layer (10) and flatten it. At this time, the mortar must be poured 4cm or more deep so that the top surface of the mortar layer (10) is 6cm deep from the surface of the sidewalk block.

[0068] After the mortar layer (10) is formed, the protective case (20) is placed on top of the mortar layer (10) and then flattened so that the top of the protective case (20) is flush with the surface of the sidewalk block. This allows the protective case (20) to be firmly fixed to the mortar layer (10) and prevents moisture from the ground, etc. from penetrating into the protective case (20).

[0069] Next, the exposed part (30), which is delivered in a factory assembled state, is attached to the protective case (20), and the gap between the exposed part (30) and the protective case (20) is filled with silicon, and the exposed part (30) is fixed to the protective case (20) by a silicon mold (40).

[0070] Once the installation of the display part (30) is completed through the above process, the option board (51) is connected to the already installed traffic signal controller (60), and the controller (52) connected to the option board (51) via RS485 is connected to the wires of the display part (30), thereby forming the control part (50) for controlling the display part (30). After the configuration of the control part (50) is completed, the performance of the display part (30) is finally checked through a test operation.

[0071] Then, fine sand is filled into the gap between the protective case (20) and the ground to prevent the protective case (20) from separating from the ground, and the tools and materials used are collected, and the exposed part (30) and its surrounding area are cleaned with a soft broom to finish the work.

[0072] So far, we have explained the construction of road signal lights, but the same methods can be applied when constructing underground lights such as landscape lighting, buried advertising blocks, and road sign studs that are buried in the ground.

[0073] Although the present invention has been described and illustrated in relation to several embodiments for illustrating the technical idea of ​​the present invention, the present invention is not limited to the configuration and operation as described above, and it will be well understood by those skilled in the art that many changes and modifications can be made to the present invention without departing from the scope of the technical idea described in the description of the present invention. Therefore, all such appropriate changes and modifications and equivalents should be considered to be within the scope of the present invention. [Explanation of symbols]

[0074] 10...Mortar layer 20...Protective case 30...Exterior part 31...Outer box 32...Inner box 40...Silicone mold 50...Control section 51...Option board 52...Controller 60...Traffic signal controller

Claims

[Claim 1] A bottom mortar layer (10); a protective case (20) placed on top of the mortar layer to protect the product; an exposing portion (30) that exposing a red or green signal and that is installed in the protective case (20); A silicon mold (40) that is filled between the protective case (20) and the exposed portion (30) and fixes the exposed portion; and The underground buried light construction structure includes a control unit (50) that includes an option board (51) connected to a traffic signal control device and a controller (52) connected to the exposed part (30) so as to control the exposed part (30), and controls the exposed part (30).

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