Streetlight base

Abstract

The present invention relates to a foundation structure for a street light, and more specifically, to a foundation structure for a street light that significantly reduces the risk of disconnection of the main power supply line installed in the street light support structure in the event of damage to the street light, such as a vehicle collision, and even if damage to the power line occurs, prevents the interruption of power supply to neighboring street lights to prevent power outages in other connected street lights in the event of a power line failure in some street lights, and furthermore, enables power line repair work to be performed more easily and quickly.

Description

Technology Field

[0001] The present invention relates to a foundation structure for a street light, and more specifically, to a foundation structure for a street light that significantly reduces the risk of disconnection of the main power supply line installed in the street light support structure in the event of damage to the street light, such as a vehicle collision, and even if damage to the power line occurs, prevents the interruption of power supply to neighboring street lights to prevent power outages in other connected street lights in the event of a power line failure in some street lights, and furthermore, enables power line repair work to be performed more easily and quickly. Background Technology

[0002] A general example of a street light power line connection structure that supplies power to a street light in an existing street light is, as shown in FIG. 1, a distribution box (100) equipped with first and second circuit breakers (100a, 100b) and first and second power lines (200, 300) connected to the first and second circuit breakers (100a, 100b), respectively, and the first and second circuit breakers (100a, 100b) are connected to a power source.

[0003] Accordingly, streetlights (400a, 400b) within a certain section are connected to the first and second power lines (200, 300) to supply power to the streetlights (400a, 400b).

[0004] At this time, streetlights arranged in a line are alternately connected to the first power line and the second power line so that when a problem occurs in the first or second power line (200, 300), only some of the first or second streetlights (400a, 400b) are turned off to ensure a minimum amount of lighting. However, even with this wiring connection structure, there is a problem in that if flooding or damage occurs and the first and second power lines (200, 300) fail simultaneously, both the first streetlight (400a) and the second streetlight (400b) turn off.

[0005] Therefore, there was a problem in that the function of the lighting was lost due to a failure of some street light power lines, and lighting could not be secured until the power lines were restored, which could lead to an accident. In addition, since the first and second power lines (200, 300) are connected to the street lights (400a, 400b) through pipes buried underground, if a break occurs in the first and second power lines (200, 300), the ground must be excavated to open the pipes, so there was a limitation in that the work of restoring the power supply was very cumbersome and required a lot of time and cost.

[0006] In addition, there was a problem in that if the above-mentioned street light collides with a moving object such as a vehicle, the entire first or second power line (200, 300) becomes problematic, causing the entire first or second power line to turn off, making it impossible to use the street light efficiently.

[0007] Meanwhile, the issue of power interruption caused by damage to power lines stems not only from direct external forces applied to streetlights by vehicles or the like, but also from external forces transmitted through such impacts to the foundation structures supporting the streetlights, such as foundation stones, which then cause the power lines to break. Therefore, to prevent power line damage and subsequent streetlight failures caused by external impacts, the most proactive measure to consider is to prevent damage by cushioning and dispersing the impact applied to the power lines within the supporting foundation structures. Prior art literature

[0008] Published Patent 10-2010-0104134 The problem to be solved

[0009] The present invention was created to address the various problems of the aforementioned prior art, and aims to provide a basic structure for a street light that significantly reduces the risk of disconnection of the main power supply line installed within the street light support structure in the event of damage to the street light, such as from a vehicle collision; prevents the interruption of power supply to neighboring street lights even if damage to the power line occurs, thereby preventing power outages in other connected street lights in the event of a power line failure in some street lights; and furthermore, enables wire repair work to be performed more easily and quickly. means of solving the problem

[0010] The present invention is characterized by comprising, as a means to achieve the above objective, a base body that supports a street light at the top and has horizontal guides formed through the sides to guide wires toward the interior, and vertical guides formed through the top and bottom to guide the wires guided through the horizontal guides into the interior of the street light; and a cushioning case installed at the intersection of the horizontal guides and the vertical guides, which receives and protects the wires guided into the interior of the base body.

[0011] Additionally, the buffer case comprises: an outer casing formed with a rectangular housing structure to provide an internal installation space, wherein external horizontal holes communicating with the horizontal guide are formed through the left and right sides and external vertical holes communicating with the vertical guide are formed through the top surface; a wire installed on the inner upper surface of the outer casing; and an inner casing installed suspended at a certain height from the wire within the installation space of the outer casing at a certain distance from the outer casing, wherein the inner casing formed with a rectangular housing structure to provide an internal installation space, wherein internal horizontal holes communicating with the external horizontal holes are formed through the left and right sides and internal vertical holes communicating with the external vertical holes are formed through the top surface.

[0012] Additionally, the buffer case further includes a connecting post that connects the outer and inner casings in a left-right direction, with one end connected to the inner surface of the outer casing and the other end connected to the outer surface of the inner casing; wherein the outer horizontal hole and the inner horizontal hole are eccentrically arranged to the left and right with the connecting post at the center, and the wire introduced and guided into the outer casing through the outer horizontal hole is wound multiple times to the outside of the connecting post and then introduced and guided into the inner casing through the inner horizontal hole.

[0013] In addition, the above buffer case is characterized by further including a wire fixing part installed directly above the above connecting post and discharging a hardener in the direction of the above connecting post when the outer or inner casing vibrates.

[0014] Additionally, the wire fixing part comprises: a pack member installed on the outer surface of the inner casing and containing a hardener inside; and a blade installed on the inner surface of the outer casing to face the pack member, which induces the cutting of the pack member to cause the hardener contained within the pack member to leak out when it comes into contact with the pack member due to vibration of the inner casing or the outer casing; wherein the pack member comprises: a housing having a housing structure that has a structure in which the width gradually increases toward the top and approaches the inner surface of the outer casing, and a vertically elongated cut formed on one side facing the blade; and a hardener pack stored in the housing with the hardener sealed therein; wherein the blade protrudes from the inner surface of the outer casing toward the direction of the housing and, upon penetrating the cut, cuts the hardener pack inside the housing along the longitudinal direction of the cut. Effects of the invention

[0015] The present invention provides the advantageous effect of significantly reducing the risk of disconnection of the main power supply line installed in the street light support structure in the event of damage to the street light, such as from a vehicle collision, and preventing the interruption of power supply to neighboring street lights even if power line damage occurs, thereby preventing power outages in other connected street lights when the power line of some street lights fails, and further enabling power line repair work to be performed more easily and quickly. Brief explanation of the drawing

[0016] FIG. 1 is a schematic diagram illustrating the street light wiring connection structure. FIG. 2 is a diagram illustrating the exploded configuration of a base structure for a street light according to the present invention. FIG. 3 is a drawing showing the overall cross-sectional configuration with a street light installed on top of a base structure for a street light according to the present invention. FIG. 4 is an enlarged view of the configuration of the key parts of FIG. 3. FIG. 5 is a diagram illustrating the state in which the underground power line is activated when the automatic switch unit is operated. FIG. 6 is a schematic diagram illustrating a cross-sectional configuration based on the line AA shown in FIG. 4. FIG. 7 is a drawing showing the outer casing in a partially cut state. Fig. 8 is an enlarged drawing of the wire fixing part. FIG. 9 is a drawing illustrating the state in which a hardening agent has leaked from the wire fixing part. Specific details for implementing the invention

[0017] The objects, features, and advantages of the present invention described above will become more apparent through the following embodiments in connection with the accompanying drawings. The specific structural or functional descriptions below are merely illustrative for the purpose of explaining embodiments according to the concept of the present invention, and embodiments according to the concept of the present invention may be implemented in various forms and should not be interpreted as being limited to the embodiments described herein.

[0018] Since embodiments according to the concept of the present invention may be subject to various modifications and may take various forms, specific embodiments are illustrated in the drawings and described in detail in this specification. However, this is not intended to limit the embodiments according to the concept of the present invention to specific disclosed forms, and it should be understood that they include all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention.

[0019] Terms such as "first" and / or "second" may be used to describe various components, but the components are not limited to these terms. For the sole purpose of distinguishing one component from other components, for example, without departing from the scope of rights according to the concept of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component.

[0020] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. Conversely, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between. Other expressions used to describe relationships between components, such as "between" and "exactly between," or "adjacent to" and "directly adjacent to," should be interpreted in the same way.

[0021] The terms used herein are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “comprising” or “having” are intended to specify the existence of the implemented features, numbers, steps, actions, components, parts, or combinations thereof, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0022] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this specification.

[0023] The foundation structure for a street light according to the present invention is a foundation that supports the structure of the street light (50) by being buried at a certain depth in the ground where the street light (50) is installed or formed exposed, and guides the power supply wire (20) for driving the street light (50) buried underground into the interior of the street light (50). In particular, when an external force such as a vehicle colliding with the street light (50) occurs, the impact applied to the wire (20) inside is minimized to prevent damage to the wire (20). Even if the wire (20) is damaged, it is possible to easily perform emergency repairs, and the structure is mainly characterized by preventing a chain reaction of power interruption in which power supply to neighboring street lights (50) is cut off due to damage to the wire (20).

[0024] In one embodiment, the base structure for a street light according to the present invention can be defined as comprising a base body (10) and a buffer case (100).

[0025] First, the base body (10) forms the overall exterior of the base structure for a street light according to the present invention and houses a cushioning case (100) inside.

[0026] At this time, a horizontal guide (11) for guiding the introduction of a wire (20) buried in the ground toward a buffer case (100) installed inside can be formed through to the left and right.

[0027] Since the wire (20) wired into the buffer case (100) must be wired into the street light (50) supported on the upper part of the base body (10), the base body (10) has a structure in which a vertical guide (12) is formed vertically to guide the wire (20) introduced into the buffer case (100) through the horizontal guide (11) into the street light (50).

[0028] Accordingly, horizontal guides (11) are formed penetratingly on the left and right sides inside the base body (10), and vertical guides (12) are formed penetratingly in the direction of upward from the center of the horizontal guides (11), so that the horizontal guides (11) and vertical guides (12) are connected to each other to form a single channel, while a buffer case (100), which will be described later, is installed at the intersection point of the horizontal guides (11) and vertical guides (12).

[0029] Accordingly, the wire (20) is first routed into the interior of the base body (10) through a horizontal guide (11) on one side, then passes through the interior of the buffer case (100), then is routed into the interior of the street light (50) through a vertical guide (12) to make contact with the light-emitting module of the street light (50), then passes through the interior of the buffer case (100) again through the vertical guide (12), and then is routed out of the base body (10) through a horizontal guide (11) on the other side.

[0030] The wire (20) wired to the outside of the base body (10) is then continuously wired into the inside of the base body (10) of an adjacent street light (50) in the same manner as described above. Since the wire (20) is severed at a specific street light (50) due to damage to the street light (50), the remaining street lights (50) that are electrically connected will also have their power supply interrupted, so preventing the wire (20) from being severed due to impact must be considered as the top priority.

[0031] Meanwhile, the power line (20) is composed of a main power line (21) and an underground power line (21). The main power line (21) is a power line (20) that crosses the inside of a street light (50), and the underground power line (21) is a power line (20) that is selectively connected by a switching action by an automatic switch unit (40) inside a buffer case (100) to supply emergency power to an adjacent street light (50) in case of an emergency.

[0032] That is, although both the main power line (21) and the underground power line (21) pass through the buffer case (100), even if the main power line (21) wired to the street light (50) is disconnected due to damage to the street light (50), the underground power line (22) is safely protected inside the buffer case (100) and can maintain a normal operating state with minimal physical damage, and in the event of damage to the main power line (21), emergency power can be supplied to the adjacent street light (50) through this underground power line (21).

[0033] At this time, a wire gripping fixing part (30) may be installed in the vertical guide (12) to grip and fix the wire (20) (main wire (21)) discharged from the buffer case (100) toward the street light (50). This wire gripping fixing part (30) maintains the gripping state of the wire (20) when the street light (50) is damaged, thereby preventing excessive tensile force from being applied to the wire (20). Additionally, when removing the damaged street light (50), it intuitively exposes the wire (20) to the outside, thereby facilitating repair work on the wire (20).

[0034] That is, even when the street light (50) is damaged, the wire (20) is fixed in place by the wire holding fixing part (30), so the main wire (21) and the underground power line (21) installed below it can be maintained in an undamaged state, so the wiring work of the main wire (21) can be performed more easily when replacing the damaged street light (50).

[0035] The automatic switch unit (40) installed inside the buffer case (100) is composed of an electrical element such as a relay and does not operate when the street light (50) is operating normally, but detects when the main power line (21) is disconnected due to damage to the street light (50) and performs the function of switching the underground power line (21) so that electricity is supplied to the neighboring street light (50).

[0036] Next, the buffer case (100) receives the wire (20) introduced into the interior of the base body (10) and protects it from impact.

[0037] When a vehicle or the like collides with a street light (50), this impact is naturally transmitted to the base body (10) and further to the wire (20) wired inside the base body (10), causing the wire (20) to break. If the wire (20) breaks near the street light (50), the broken part can be easily identified during the removal process of the street light (50). However, if the wire (20) breaks inside the base body (10), it becomes very difficult to visually check the wire (20) unless the base body (10) buried underground is completely removed and the interior is opened, making repair work very difficult.

[0038] Therefore, it is necessary to reliably protect the wires (20) wired inside the base body (10) from external impact, and the buffer case (100) takes on this role.

[0039] In one embodiment, the buffer case (100) may be exemplified as including an outer casing (110), a wire (120), an inner casing (130), a connecting post (140), and a wire fixing part (150).

[0040] First, the outer casing (110) forms the exterior of the buffer case (100) and is characterized by having a rectangular casing structure that provides an installation space inside.

[0041] In the installation space of the outer casing (110), a wire (120), an inner casing (130), a connecting post (140), a wire fixing part (150), etc., can be installed in appropriate places.

[0042] The outer casing (110) is installed at the intersection of the horizontal guide (11) and the vertical guide (12), and although not shown, a mounting groove for installing the outer casing (110) may be provided at the intersection of the horizontal guide (11) and the vertical guide (12). An elastic spring is installed in the mounting groove to cushion and support the outer casing (110), thereby effectively dampening vibrations applied to the outer casing (110).

[0043] External horizontal holes (111) communicating with horizontal guides (11) may be formed through the left and right sides of the outer casing (110), and external vertical holes (112) communicating with vertical guides (12) may be formed through the upper surface.

[0044] The wire (20) can pass through the interconnected horizontal guide (11) and external horizontal hole (111), and the vertical guide (12) and external vertical hole (112).

[0045] The wire (120) is installed on the inner upper surface of the outer casing (110) and serves to suspend and fix the inner casing (130) within the installation space of the outer casing (110).

[0046] It is preferable that the wire (120) connects the inner upper surface of the outer casing (110) and the outer upper surface of the inner casing (130) at a total of four points spaced apart in the front, back, left, and right directions.

[0047] The inner box (130) is configured to be installed suspended at a certain height from the wire (120) so as to be spaced a certain distance from the outer box (110) within the installation space of the outer box (110), and is formed as a rectangular box structure to provide an installation space inside, and the wire (20) and automatic switch unit (40) are embedded within the installation space of the inner box (130).

[0048] The inner casing (130) is structured to be positioned so as to be suspended at a certain height from the inner lower surface of the outer casing (110) via a wire (120), and also spaced at a certain distance from the inner side and upper surface of the outer casing (110).

[0049] That is, the inner casing (130) can be maintained in a structure that is completely separated from the outer casing (110) in the up-down, front-back, left-right directions, and is simply suspended inside the outer casing (110) via a wire (120). Therefore, even if an impact applied to the base body (10) is transmitted to the outer casing (110) that is in direct contact with the base body (10), such impact is not easily transmitted from the outer casing (110) to the inner casing (130).

[0050] Additionally, an internal horizontal hole (131) communicating with the external horizontal hole (111) of the outer box (110) may be formed through the left and right sides of the inner box (130), and an internal vertical hole (132) communicating with the external vertical hole (112) of the outer box (110) may be formed through the upper surface.

[0051] The external wire (20) can be guided into the inner box (130) or discharged out through the external horizontal hole (111) and the internal horizontal hole (131).

[0052] The main wire (21) can be wired into the street light (50) or guided from the street light (50) to the inner box (130) through the outer vertical hole (112) and the inner vertical hole (132).

[0053] Next, the connecting post (140) is installed between the outer box (110) and the inner box (130) and is configured to support the outer box (110) and the inner box (130) apart. One end is connected to the inner surface of the outer box (110) and the other end is connected to the outer surface of the inner box (130), thereby connecting the outer box (110) and the inner box (130) in the left-right direction.

[0054] At this time, the external horizontal hole (111) and the internal horizontal hole (131) facing each other are arranged eccentrically to the left and right with the connecting post (140) at the center, and the wire (20) introduced and guided into the interior of the outer casing (110) through the external horizontal hole (111) is wound multiple times to the outside of the connecting post (140) and then introduced and guided into the inner casing (130) through the internal horizontal hole (131) which is arranged at an eccentric position from the external horizontal hole (111).

[0055] In this way, by winding the wire (20) multiple times around the connecting post (140) in the space between the outer casing (110) and the inner casing (130), sufficient length and length margin can be secured for the wire (20) introduced and guided into the buffer case (100).

[0056] When a strong impact occurs to the street light (50), there is a risk that the wire (20) may be pulled in an unspecified direction if the outer casing (110) or the inner casing (130) vibrates due to the external impact. However, since there is a spare portion of the wire (20) wound around the connecting post (140) in the section between the outer casing (110) and the inner casing (130), even if the inner casing (130) vibrates while hanging from the wire (120) inside the outer casing (110), the excessive tensile force applied to the wire (20) can be minimized.

[0057] Meanwhile, it is desirable that these connecting posts (140) be made of a material that breaks easily so that they naturally break when the outer casing (110) or inner casing (130) vibrates excessively.

[0058] If the connecting post (140) itself has strong strength and maintains the connection between the outer casing (110) and the inner casing (130), the connecting post (140) itself acts as a vibration transmission medium through which the vibration of the outer casing (110) is transmitted directly to the inner casing (130), which is unsuitable in terms of shock cushioning effect.

[0059] Therefore, when strong vibration is transmitted to the buffer case (100), the connecting post (140) between the outer casing (110) and the inner casing (130) breaks immediately, thereby preventing the vibration of the outer casing (110) from being unnecessarily transmitted to the inner casing (130).

[0060] Next, the wire fixing part (150) is installed directly above the connecting post (140) and performs the function of discharging a hardening agent in the direction of the connecting post (140) when the outer casing (110) or inner casing (130) vibrates.

[0061] As the above curing agent, urethane foam is used to rapidly fill the space between the outer casing (110) and the inner casing (130) and fill the empty voids as it expands and hardens as it flows out.

[0062] The meaning that the above wire fixing part (150) is activated is that strong vibrations occur in the street light (50) and further in the buffer case (100) installed inside the base body (10), so that the street light (50) itself is damaged to the extent that it needs to be replaced. This allows the wire (20) to be fixed inside by rapidly releasing a hardening agent into the space between the outer box (110) and the inner box (130) so that the wire (20) can be repaired more easily.

[0063] The hardening agent leaked out flows into the area around the fractured connecting post (140) to fix the wire (20) wrapped around the fractured connecting post (140), and in addition, it can block the open external horizontal hole (111) and internal horizontal hole (131) around it, as well as fill the gap between the outer casing (110) and the inner casing (130) to suppress movement between the two.

[0064] When removing or partially cutting a damaged street light (50) on the base body (10), a strong tensile force is generated on the wire (20) wired inside, and if the wire (20) is pulled arbitrarily due to this tensile force, especially the wire (20) inside the buffer case (100) is at risk of easily breaking due to its relatively sealed structure.

[0065] In addition, when repairing the wire (20), if the inner box (130) moves irregularly inside the outer box (110), the wire (20) may be further damaged or the repair work on the wire (20) may become more difficult. Therefore, by filling the space between the outer box (110) and the inner box (130) with a hardener, it is possible to expect the wire (20) inside the buffer case (100) to be fixed and the movement of the inner box (130) to be suppressed.

[0066] The reason this curing agent is not filled into the inner container (130) is that an automatic switch unit (40) is installed inside the inner container (130), and the curing agent is intended to prevent interference with the operation of the automatic switch unit (40).

[0067] In one embodiment, the wire fixing part (150) can be exemplified as including a pack member (151) and a blade (152).

[0068] The pack member (151) is installed on the outer surface of the inner box (130) and is configured to contain a hardener inside, and the blade (152) is installed on the inner surface of the outer box (110) so as to face the pack member (151), and is configured to perform the function of inducing a cut in the pack member (151) and causing the hardener contained within the pack member (151) to flow out when it comes into contact with the pack member (151) due to vibration of the inner box (130) or the outer box (110).

[0069] That is, when the outer casing (110) or inner casing (130) vibrates strongly, the pack member (151) and the blade (152) can move in a direction that brings them closer to each other, and in this process, at the moment the blade (152) comes into contact with the pack member (151), the blade (152) can tear the hardener pack (151a) of the pack member (151) and facilitate the external leakage of the hardener.

[0070] The pack member (151) may be exemplified by including a hardener pack (151a) having a structure that seals the hardener inside an outer shell of a material that is easily torn with a sharp tool, and a housing (151b) that houses the hardener pack (151a).

[0071] The housing (151b) forms the exterior of the pack member (151) and has a structure in which the width gradually increases toward the top and gradually approaches the inner side of the outer casing (110) facing it. It can be formed as a housing structure in which a vertically elongated cut (151c) is formed through one side facing the blade (152) fixedly installed on the outer casing (110).

[0072] That is, the structure is such that the curing agent can be discharged only when the blade (152) moves to the corresponding position of the cut (151c) and reaches the curing agent pack (151a) stored inside.

[0073] The blade (152) protrudes from the inner side of the outer casing (110) toward the direction of the housing (151b) and moves toward the opening (151c) by the left-right eccentric movement of the outer casing (110) or the inner casing (130). When it penetrates the opening (151c), it can cut the hardener pack (151a) inside the housing (151b) vertically along the length of the opening (151c).

[0074] At this time, the housing (151b) itself has a structure in which it protrudes and slopes from the outer surface of the inner box (130) to the inner surface of the outer box (110), so that the curing agent leaked from the direction of the housing (151b) can be uniformly leaked in the gap between the outer box (110) and the inner box (130) and quickly fill the void.

[0075] The embodiments of the present invention described above are merely illustrative, and those skilled in the art will readily understand that various modifications and equivalent alternative embodiments are possible therefrom. Therefore, it will be understood that the present invention is not limited only to the forms mentioned in the detailed description above. Accordingly, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims. Furthermore, the present invention should be understood to include all modifications, equivalents, and substitutions within the spirit and scope of the present invention as defined by the appended claims. Explanation of the symbols

[0076] 10: Basic body 100: Cushioning case 110: Outer casing 120: Wire 130: Inner Ship 140: Linked Post 150: Frontline fixing part

Claims

Claim 1 A base body that supports the street light at the top and has horizontal guides formed through the sides to guide the wires introduced into the interior, and vertical guides formed through the top and bottom to guide the wires introduced through the horizontal guides into the interior of the street light; and a buffer case installed at the intersection of the horizontal guides and vertical guides, which receives and protects the wires introduced into the interior of the base body; wherein the buffer case is formed with a rectangular enclosure structure to provide an internal installation space, and has external horizontal holes formed through the left and right sides communicating with the horizontal guides and external vertical holes formed through the top surface communicating with the vertical guides; and a wire installed on the inner upper surface of the buffer case. A base structure for a street light, characterized by comprising: an inner box that is installed suspended at a certain height from the wire within the installation space of the outer box, spaced apart from the outer box, and is formed in a square box structure to provide an internal installation space, wherein an internal horizontal hole communicating with the external horizontal hole is formed through the left and right sides, and an internal vertical hole communicating with the external vertical hole is formed through the top surface. Claim 2 delete Claim 3 In claim 1, the buffer case further comprises a connecting post, one end of which is connected to the inner surface of the outer casing and the other end of which is connected to the outer surface of the inner casing, thereby connecting the outer casing and the inner casing in a left-right direction; the outer horizontal hole and the inner horizontal hole are arranged eccentrically to the left and right with the connecting post at the center; a wire introduced and guided into the interior of the outer casing through the outer horizontal hole is wound multiple times to the outside of the connecting post and then introduced and guided into the inner casing through the inner horizontal hole; the buffer case further comprises a wire fixing part installed directly above the connecting post and discharging a curing agent in the direction of the connecting post when the outer casing or the inner casing vibrates; and the wire fixing part comprises a pack member installed on the outer surface of the inner casing and containing a curing agent inside. A basic structure for a street light, comprising: a blade installed on the inner surface of the outer casing to face the pack member, and which induces a cut in the pack member to cause the hardener contained within the pack member to leak out when it comes into contact with the pack member due to vibration of the inner casing or the outer casing; wherein the pack member comprises: a housing having a housing structure in which the left-right width gradually widens toward the top and approaches the inner surface of the outer casing, and a vertically elongated cut formed on one side facing the blade; and a hardener pack stored in the housing in a sealed state with the hardener; wherein the blade protrudes from the inner surface of the outer casing toward the direction of the housing and, upon penetrating the cut, cuts the hardener pack inside the housing along the longitudinal direction of the cut.

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