Streetlight equipped with a durable pole fastening structure

Abstract

The present invention relates to a street light having a lamp post fastening structure with improved durability. More specifically, the invention comprises a lamp post having an inlet formed at the bottom for external air to enter and a hollow formed therein for the air entering the interior to move upward; a support tube body having an air passage formed therein, one end of which is coupled to the upper end of the lamp post so that the air passage communicates with the hollow, and which extends outwardly from the lamp post; and a lighting unit coupled to one side of the support tube body and emitting light downward to illuminate a predetermined lighting area. The lamp post comprises a body part having an inlet formed at the bottom for external air to enter and a hollow formed therein for the air entering the interior to move upward, and an extension part integrally coupled with a nut member that extends upward from the upper end of the body part, at least one side of which is bent to have a diameter smaller than the diameter of the body part, and has a nut hole formed on one side of the support tube body. The support tube body comprises a coupling part inserted into the extension part, wherein a coupling hole is formed on one side of the coupling part corresponding to the nut member. The present invention provides a street light having a lamppost fastening structure with improved durability, characterized in that the fastening means is formed and passes through the coupling hole and is screw-coupled to the nut member, thereby connecting the coupling part to the extension part. According to the present invention as described above, the lamp post and the support tube are combined in a simple structure, while having the effect of stably maintaining a rigid connection state.

Description

Technology Field

[0001] The present invention relates to a street light having a pole fastening structure with improved durability, and more specifically, to a street light having a pole fastening structure with improved durability that can significantly improve the heat dissipation efficiency of a lighting unit throughout all four seasons by utilizing natural convection airflow to branch and supply external air flowing into the lighting unit to the inner and outer spaces of a heat sink, respectively. Background Technology

[0003] Streetlights are lighting fixtures installed in various environments—including not only pedestrian sidewalks, parks, and vehicular roads, but also rural areas, agricultural greenhouses, coastal regions such as small and large fishing ports, mountainous terrain, and military boundary zones—to illuminate predetermined lighting areas, thereby ensuring nighttime visibility and guaranteeing safety in diverse outdoor settings.

[0004] Conventional streetlights generally used high-pressure mercury lamps, fluorescent lamps, and sodium lamps, but these had problems such as short service life, poor impact resistance, and high power consumption. Recently, high-intensity LEDs (Light emitting diodes), which are eco-friendly, have excellent impact resistance, and consume less power, are mainly being used.

[0005] As is well known, these LEDs inevitably generate significant heat during the process of converting electricity into light. In particular, in streetlights where high illumination is required, the use of high-output, high-brightness LEDs increases the amount of electricity consumed, and consequently, the amount of heat generated also increases significantly.

[0006] Such high-temperature heat generation causes thermal stress on streetlights and degrades the components of streetlights due to heat accumulation, thereby causing problems such as reduced LED functionality, lowered illuminance, or significantly shortened LED lifespan.

[0007] Accordingly, various technologies are being researched to improve the heat dissipation performance of streetlights.

[0008] For example, Korean Registered Patent No. 1245260 describes a street light that is equipped with a fan inside a support and drives it to forcibly draw in external air and pump it toward the light source to improve heat dissipation performance. However, this design has problems such as safety issues and maintenance issues, as well as power consumption, which increase significantly as the fan must be driven frequently, in addition to the installation structure, installation space, and power supply structure of the fan that are inevitably required for heat dissipation.

[0009] Korean Patent Publication No. 2009-0100784 proposes a street light that applies a method of dissipating heat by inducing air flow to solve the above problems, and an example thereof is illustrated in FIG. 1.

[0011] FIG. 1 is a drawing illustrating a street light having a conventional air flow induction heat dissipation structure.

[0012] As shown in FIG. 1, a street light (100) having a conventional air flow-induced heat dissipation structure comprises a street light body (110) installed on the upper part of a lamp post, an LED (120) installed inside the street light body (110) and emitting light downward, a heat sink (130) installed above the LED (120) inside the street light body (110) and having a plurality of heat dissipation fins (not shown), and a cover (140) installed above the heat sink (130) on one side of the street light body (110) and having a ventilation hole (141) formed on one side through which external air flows in.

[0013] A street light (100) having such a conventional air flow induction heat dissipation structure induces the inflow of external air through the ventilation holes (141) of the cover (140), and cools the heat sink (130) through the inflowed external air to increase the heat dissipation efficiency of the LED (120).

[0014] However, the conventional street light (100) having an air flow-induced heat dissipation structure has a structure in which external air introduced from the outside simply passes through the cover (140) space formed on the upper part of the street light body (110) to cool the heat dissipation fins (131), and since the cooling section of the heat dissipation fins (131) is too short, it is not possible to obtain sufficient cooling time with the outside air to dissipate the large amount of heat generated by the LED, so there is a limit to effectively dissipating heat from the LED (120). Prior art literature

[0016] Korean Registered Patent No. 1245260 'LED streetlight utilizing solar and wind power equipped with a heat dissipation structure' Korean Published Patent No. 2009-0100784 'Streetlight equipped with an LED heat dissipation structure' The problem to be solved

[0017] The present invention has been devised to solve the aforementioned problems, and the objective of the present invention is to provide a street light having a lamppost fastening structure with improved durability, wherein an extension part with a nut member integrally connected to the upper part of the lamppost is formed, and one end of a fastening member is connected to the nut member while passing through the support tube with the support tube, thereby allowing the lamppost and the support tube to be connected in a simple structure while stably maintaining a robust connection state. means of solving the problem

[0019] According to one aspect of the present invention for achieving the above-mentioned purpose, the lamp post comprises: a lamp post having an inlet formed at the bottom for external air to enter and a hollow formed therein through which the air introduced therein moves upward; a support tube body having an air passage formed therein, one end of which is coupled to the upper end of the lamp post so that the air passage communicates with the hollow, and which extends outwardly from the lamp post; and a lighting unit coupled to one side of the support tube body and emitting light downward to illuminate a predetermined lighting area. The lamp post comprises a body part having an inlet formed at the bottom for external air to enter and a hollow formed therein through which the air introduced therein moves upward; and an extension part integrally coupled with a nut member having a nut hole formed on one side of the body part, which extends upward from the upper end of the body part and is formed such that at least one side is bent to have a diameter smaller than the diameter of the body part. The support tube body comprises a coupling part inserted into the extension part, wherein a coupling hole is formed on one side of the coupling part corresponding to the nut member, and a fastening means is formed to the coupling hole A street light having a lamppost fastening structure with improved durability is provided, characterized in that the connecting part is coupled to the extension part by passing through and screwing into the nut member. Effects of the invention

[0021] According to the present invention as described above, the lamp post and the support tube are combined in a simple structure, while having the effect of stably maintaining a rigid connection state. Brief explanation of the drawing

[0023] FIG. 1 is a drawing illustrating a street light having a conventional heat dissipation structure. FIG. 2 is a perspective view of a street light having a lamppost fastening structure with improved durability according to an embodiment of the present invention. FIG. 3 is a drawing showing the lower part of a lamp post according to an embodiment of the present invention. FIG. 4 is a drawing illustrating a combined structure of a lamp post and a support tube according to an embodiment of the present invention. FIG. 5a is a cross-sectional view of a lighting unit according to an embodiment of the present invention, FIG. 5b is a cross-sectional view of a heat sink of various forms according to an embodiment of the present invention, FIG. 5c is a drawing showing a state in which a hose is connected to a heat sink according to an embodiment of the present invention. FIG. 6 is a partial cross-sectional perspective view of a lighting unit according to an embodiment of the present invention, Fig. 7a is an enlarged view of 'A' shown in Fig. 5a. Fig. 7b is an enlarged view of 'B' shown in Fig. 5a, FIG. 8 is a drawing illustrating the state in which external air is introduced into the interior of a lamp post according to an embodiment of the present invention. FIG. 9 is a drawing illustrating the state in which external air is moved from a lamppost to a support tube body according to an embodiment of the present invention. FIGS. 10A and 10B are drawings illustrating a state in which external air moving along a support tube is branched and flows into the heat dissipation space and the interior of a heat sink through the first to third through holes. FIGS. 11a and FIGS. 11b are drawings illustrating the state in which external air is discharged from a first air outlet and a second air outlet according to an embodiment of the present invention. FIG. 12 is a perspective view of a cover installed on the lower part of a lamppost according to another embodiment of the present invention. FIG. 13 is an exploded perspective view of a cover installed on the lower part of a lamppost according to another embodiment of the present invention. FIGS. 14a and FIGS. 14b are drawings illustrating the state in which the second body part of a cover installed at the lower part of a lamppost rotates according to another embodiment of the present invention. FIGS. 15a and FIGS. 15b are drawings in which a cover according to another embodiment of the present invention is configured in a different form. FIG. 16 is a perspective view showing the lower part of a lamp post according to another embodiment of the present invention. FIG. 17 is a drawing illustrating a state in which an opening / closing part according to another embodiment of the present invention blocks an inlet hole. Specific details for implementing the invention

[0024] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0026] FIG. 2 is a perspective view of a street light having a lamp post fastening structure with improved durability according to an embodiment of the present invention; FIG. 3 is a drawing showing the lower part of a lamp post according to an embodiment of the present invention; FIG. 4 is a drawing showing the combined structure of a lamp post and a support tube according to an embodiment of the present invention; FIG. 5a is a cross-sectional view of a lighting unit according to an embodiment of the present invention; FIG. 5b is a cross-sectional view of a heat sink of various forms according to an embodiment of the present invention; FIG. 5c is a drawing showing a state in which a hose is connected to a heat sink according to an embodiment of the present invention; FIG. 6 is a partial cross-sectional perspective view of a lighting unit according to an embodiment of the present invention; FIG. 7a is an enlarged view of 'A' indicated in FIG. 5; FIG. 7b is an enlarged view of 'B' indicated in FIG. 5.

[0027] As shown in FIGS. 2 to 7b, a street light (1) having a lamp post fastening structure with improved durability according to an embodiment of the present invention comprises a lamp post (10), a support tube (20), and a lighting unit (30).

[0028] The lamp post (10) may be configured to include a body part (11) in which the lower part is firmly fixed to the ground, a cover (12) coupled to the lower part of the body part (11), and an extension part (13) formed extending upward from the upper part of the body part (11), and serves to support the lighting part (30) through the support tube (20) described later.

[0029] The body portion (11) is formed in the shape of a support column having a length in the vertical direction, and an inlet (11a) for external air to be introduced is formed at the bottom, and a hollow (11b) is formed inside through which the introduced external air moves upward.

[0030] At this time, the inlet (11a) according to the present embodiment is preferably formed with a plurality of holes having a size smaller than foreign substances to prevent foreign substances, insects, amphibians, etc. from entering the interior of the body part (11), and in other forms, it may be configured in a mesh form for filtering foreign substances.

[0031] Meanwhile, when manufacturing the street light of the present invention by modifying a conventional street light, the above-mentioned inlet (11a) is not formed separately, and the storage opening formed to house the ballast at the bottom of the conventional lamp post (10) may be used as an air inlet means.

[0032] As shown in FIG. 3, the cover (12) is installed on one side of the outer surface of the lower part of the body (11) where the inlet (11a) is formed, shielding the outer space of the inlet (11a), and an inlet hole (12a) is formed at the bottom. This cover (12) blocks external air from entering directly into the inlet (11a) and also changes the path of external air entering into the inlet (11a) through the inlet hole (12a) formed at the bottom, causing it to bend at least once, thereby minimizing the entry of foreign matter into the interior of the lamp post (10) while allowing the external air to enter smoothly.

[0033] In particular, when sandstorms that mainly occur in countries such as the Middle East, Africa, and Mongolia enter the body (11), the path of external air inflow is bent at least once through the cover (12) so that large particles of sand fall downward by gravity and accumulate inside the foundation stone, while the air can be easily moved upward on the pillar (10).

[0034] The extension portion (13) is formed to extend upward from the upper portion of the body portion (11), and a plurality of recessed portions (13a) are formed along the longitudinal direction on the outer surface to have an outer diameter smaller than the outer diameter of the body portion (11), preferably having an outer diameter corresponding to the inner diameter of the connecting portion (21) of the support tube (20) described later.

[0035] And, the extension part (13) is integrally formed with a nut member (13b) having a nut hole (13ba) formed on one side, and is coupled to the coupling part (21) through a fastening member such as a bolt while the coupling part (21) is inserted.

[0036] The support tube (20) is configured to include a connecting part (21) that is inserted into and connected to the extension part (13), and an air transfer tube (22) that extends outward from one side of the connecting part (21) to the lamp post (10), and serves to support the lighting part (30) described later, as well as provide a path for external air to move through the hollow (11b) to the lighting part (30).

[0037] Here, as shown in FIG. 4, the connecting portion (21) is formed in a cylindrical shape with an open bottom and an inner diameter corresponding to the outer diameter of the extension portion (13), and a connecting hole (21a) is formed in an area corresponding to the nut hole (13ba) of the nut member (13b) integrally formed on one side of the extension portion (13), and a fastening means (B), such as a bolt, is connected to the nut member (13b) through the connecting hole (21a), thereby firmly connecting to the extension portion (13).

[0038] At this time, since the nut member (13b) is integrally formed on one side of the extension part (13), the connection part (21) can be easily connected to the extension part (13) simply by connecting the connection part (21) and the extension part (13) with a fastening means (B), and the connection part (21) and the extension part (13) can be connected more firmly.

[0039] This connecting part (21) provides a strong connecting force between the air transfer pipe (22) and the lamp post (10), thereby enabling the air transfer pipe (22) to firmly support the lighting part (30) connected to its rear end.

[0040] The air passage (22) is formed in the shape of a pipe with an air passage (22a) formed inside, and one end is integrally installed with the connecting part (21) so that the air passage (22a) is connected to the hollow (11b) of the lamp post (10), and the other end is extended outwardly toward the lamp post (10).

[0041] In addition, the air transfer pipe (22) has a first through hole (22b) formed at the upper end of the other end that communicates with the heat dissipation space (31a) of the case (31) of the lighting unit (30) described later, and a second through hole (22c) formed on the side that communicates with the heat dissipation space (31a) from the side, and a third through hole (22d) formed at the front end that communicates with the interior of the heat sink (33) described later.

[0042] That is, the above-mentioned air transfer pipe (22) serves to allow external air introduced from the lamp post (10) to be branched and moved to the heat sink (33) of the lighting unit (30) and the heat dissipation space (31a) of the case (31).

[0043] The lighting unit (30) is configured to include a case (31), a lighting unit (32) installed on one side of the open bottom surface of the case (31), a heat sink (33) installed on the upper side of the lighting unit (32) inside the case (31), a first shielding part (34) formed at the front end of the case (31), and a second shielding part (35) formed on the upper side of the case (31), and serves to illuminate a preset lighting area by emitting light downward.

[0044] The case (31) has a heat dissipation space (31a) formed inside and an open bottom surface, and one side of the rear end is connected to the front end of the support tube (20) and is supported on the column (10) through the support tube (20).

[0045] And, as shown in FIGS. 5A and 6, the case (31) has a first through hole (22b) of the support tube (20) communicating with the heat dissipation space (31a), and an air passage (U) leading to the heat dissipation space (31a) is formed on one side corresponding to the second through hole (22c), so that the second through hole (22c) communicates with the heat dissipation space (31a) from the side, and a third through hole (22d) is formed at the front end, communicating with the heat sink (33) described later.

[0046] Additionally, as shown in FIGS. 7A and 7B, the case (31) has a first air outlet (31b) formed at the tip through which external air passing through the heat sink (33) is discharged, and a second air outlet (31c) formed on one side of the upper surface through which external air passing through the heat dissipation space (31a) is discharged forward.

[0047] Referring again to FIG. 5a, the lighting unit (32) may be a lighting unit (32) using an LED as a light source, installed on one side of the bottom surface of the open case (31), and serves to illuminate a predetermined lighting area by emitting light downward.

[0048] Since it is obvious to those with ordinary knowledge in the relevant technical field that such a lighting unit (32) is commercially available and can be purchased and used, a detailed description of its configuration is omitted.

[0049] The heat sink (33) is installed on the upper part of the lighting unit (32) inside the case (31) and serves to release heat emitted from the lighting unit (32) to the outside. In this embodiment, a flow path (33a) through which air moves is formed inside, and one end is connected to the tip of the support tube (20) so that the flow path (33a) is connected to the third through hole (22d), and the other end is connected to one side of the inner surface of the case (31) where the first air outlet (31b) is formed so that the flow path (33a) is connected to the first air outlet (31b).

[0050] Here, the heat sink (33) according to the present embodiment can increase the heat dissipation efficiency of the lighting unit (32) by cooling through heat exchange from both the inside and outside with the air flowing into the case (31) among the external air that has moved along the support tube (20), as well as the air flowing into the heat dissipation space (31a) of the case (31).

[0051] In addition, the heat sink (33) can be formed in various shapes as shown in FIG. 5b, but the shape of the heat sink (33) according to the present invention is not necessarily limited to this, and any shape having a heat dissipation structure can be applied.

[0052] Additionally, it is preferable that the heat sink (33) be configured such that the area of ​​the leading end section connected to the support tube (20), excluding the flow path (33a), is sealed with a separate rubber cap (K) so that external air can flow from the support tube (20) into the heat sink (33) without leakage.

[0053] Additionally, when connecting the other end of the heat sink (33) to the first air outlet (31b) via a hose (H), it is preferable to improve the connection strength with the hose (H) by forcibly fitting the end of the hose (H) to the other end with a one-touch connection as shown in FIG. 5c, thereby allowing the air passing through the heat sink (33) to move more stably to the first air outlet (31b).

[0054] Continuing, referring to Fig. 7a, which is an enlarged view of part A of Fig. 5a, the first shielding part (34) is formed to extend forward from the upper end of the case (31) and is bent downward to shield the front of the first air outlet (31b), thereby serving to allow the external air discharged through the first air outlet (31b) to be discharged downward from the lighting part (30).

[0055] Referring to Fig. 7b, which is an enlarged view of section B of Fig. 5a, the second shielding part (35) is formed to extend forward from one side of the upper part of the case (31) and is bent downward to shield the front of the second air outlet (31c), and a plurality of discharge holes (35a) are formed on one side of the upper part, thereby serving to allow external air discharged through the second air outlet (31c) to be discharged upward or downward from the case (31).

[0056] The first shielding part (34) and the second shielding part (35) serve to allow the flow of air inside and outside the street light (1) having a lamp post fastening structure with improved durability according to an embodiment of the present invention to be smooth by shielding the front of the first air outlet (31b) or the second air outlet (31c). This will be explained in more detail in the operation description that follows.

[0058] FIG. 8 is a drawing illustrating the state in which external air is introduced into the interior of a lamp post according to an embodiment of the present invention, FIG. 9 is a drawing illustrating the state in which external air is moved from a lamp post to a support tube according to an embodiment of the present invention, FIG. 10a and FIG. 10b are drawings illustrating the state in which external air moving along the support tube is branched and introduced into the interior of a heat dissipation space and a heat sink through the first to third through holes, and FIG. 11a and FIG. 11b are drawings illustrating the state in which external air is discharged from the first air outlet and the second air outlet according to an embodiment of the present invention.

[0059] The operation of heat dissipation by a street light (1) having a lamp post fastening structure with improved durability according to one embodiment of the present invention having such a configuration is described below with reference to the attached FIGS. 8 to 11b.

[0060] A street light (1) having a lamp post fastening structure with improved durability according to the present embodiment emits light from a lighting unit (32) to illuminate a predetermined lighting area, and heat is generated during the process of emitting light from the lighting unit (32).

[0061] At this time, as hot air inside the lighting unit (30) is discharged through the first and second air outlets (31b, 31c) by convection, external air is introduced through the inlet hole (12a) of the cover (12) installed at the bottom of the lamp post (10), and is drawn into the inlet (11a) through the inside of the cover (12) and into the inside of the lamp post (10).

[0062] External air introduced into the interior of the lamp post (10) moves upward along the lamp post (10) as shown in FIG. 8 and flows into the air transfer pipe (22) of the support pipe body (20) connected to the upper part of the lamp post (10) as shown in FIG. 9.

[0063] External air introduced into the air transfer pipe (22) moves along the air transfer path (22a) inside the air transfer pipe (22) and is branched into the first to third through holes, respectively.

[0064] External air introduced through the first through hole (22b) flows into the heat dissipation space (31a) of the case (31) connected thereto, and external air introduced through the second through hole (22c) flows into the heat dissipation space (31a) from the side along the air passage (U) formed inside the case (31). Then, external air introduced through the third through hole (22d) flows into the interior of the heat sink (33).

[0065] To further describe the operation in which the lighting unit (30) is heat-dissipated by the external air branched in this manner, the external air introduced through the third through hole (22d) and into the heat sink (33) exchanges heat with the heat sink (33) inside the heat sink (33) to cool the heat sink (33) first, and the external air introduced through the first and second through holes (22c) and into the heat dissipation space (31a) of the case (31) exchanges heat with the heat sink (33) on the outside of the heat sink (33) to cool the outer surface of the heat sink (33) second.

[0066] That is, in this embodiment, the heat dissipation performance of the heat sink (33) is maximized by the branched external air simultaneously cooling the heat sink (33) from the inside and outside of the heat sink (33), thereby preventing overheating of the lighting unit (32) and ensuring that the maximum performance of the lighting unit (32) is continuously maintained.

[0067] Continuing, external air passing through the interior of the heat sink (33) is discharged to the outside through the first air outlet (31b), and the direction of discharge is changed by the first shielding part (34) positioned in front of the first air outlet (31b) and discharged downwards toward the lighting part (30).

[0068] Additionally, external air passing through the heat dissipation space (31a) is discharged to the outside through the second air outlet (31c) formed on the upper part of the case (31), and the discharge direction is also changed by the first shielding part (34) positioned in front of the second air outlet (31c) so that it is discharged downward and upward through the discharge hole (35a) formed on the upper part of the second shielding part (35).

[0069] In this way, the reason for changing the external air discharge path by placing the first and second shielding parts in front of the first and second air outlets (31c) is that if wind blows in the direction of the first or second air outlet (31c) due to external environmental factors, the flow of external air discharged from the first or second air outlet (31c) collides with the flow of wind, and thus the discharge operation of external air is delayed or not carried out smoothly, so the air flow within the lamp post (10), the support pipe (20), and the lighting part (30) cannot be carried out smoothly, and thus the heat dissipation efficiency may be significantly reduced. Therefore, by blocking the wind blowing in the direction of the first or second air outlet (31c) and changing the discharge direction of the external air being discharged, the collision between the wind and the external air being discharged is prevented, and thereby the external air can be discharged smoothly, thereby preventing the heat dissipation efficiency of the lighting part (30) from being reduced due to the delay of the external air being discharged.

[0071] FIG. 12 is a perspective view of a cover installed on the lower part of a lamp post according to another embodiment of the present invention, FIG. 13 is an exploded perspective view of a cover installed on the lower part of a lamp post according to another embodiment of the present invention, FIG. 14a and FIG. 14b are drawings illustrating the state in which the second body part of the cover installed on the lower part of a lamp post according to another embodiment of the present invention rotates, and FIG. 15a to FIG. 15c are drawings in which a cover according to another embodiment of the present invention is configured in a different form.

[0072] The basic configuration of the embodiments of FIGS. 12 and FIGS. 13 is the same as that of the embodiments of FIGS. 2 to FIGS. 11b, but the hydraulic volume of external air flowing into the lamp post (10) is controlled according to the external temperature, so that external air with a temperature lower than a preset reference temperature is introduced, thereby preventing damage to the lighting unit (30) due to the low temperature.

[0073] As shown in FIGS. 12 and 13, unlike the previous embodiment, the present embodiment comprises a first body part (12'a) in which a cover (12') is installed at a position corresponding to an inlet (11a) in the lower part of the column (10), and a second body part (12'b) formed to surround the first body part (12'a).

[0074] The first body part (12'a) is formed in a roughly rectangular shape, and an opening (12'aa) is formed at the bottom so that external air can enter through the opening (12'aa) and move into the interior of the column (10) through the inlet (11a).

[0075] The second body part (12'b) is formed in a rectangular shape corresponding to the first body part (12'a) to surround the first body part (12'a) and to cover the opening (12'aa), and the lower end is rotatably coupled to the first body part (12'a) so as to rotate outward from the column (10), and an inlet hole (12'ba) for external air to be introduced is formed at the upper end.

[0076] This second body part (12'b) rotates its upper part outwardly toward the column (10) to adjust the gap (S) between the inner surface and the outer surface of the first body part (12'a), thereby controlling the amount of external air flowing into the opening (12'aa) through the adjusted gap (S).

[0077] For example, in this embodiment, the amount of external air flowing into the opening (12'aa) is controlled according to the external temperature. When the external temperature is lower than a preset reference temperature, the second body part (12'b) is positioned to surround the first body part (12'a) as shown in FIG. 14a, and the second body part (12'b) blocks the opening (12'aa) of the first body part (12'a) to prevent external air from flowing into the opening (12'aa), thereby preventing damage to the configuration of the lighting part (30) due to low-temperature external air.

[0078] And, when the external temperature is higher than the reference temperature, as shown in FIG. 14b, the upper part of the second body part (12'b) is rotated outwardly toward the lamp post (10) to form a gap (S) between the outer surface of the first body part (12'a) and the inner surface of the second body part (12'b), and by opening the opening (12'aa), the amount of external air flowing into the opening (12'aa) is increased, thereby effectively dissipating heat from the lighting part (30) by the incoming external air.

[0079] Meanwhile, although the present embodiment describes the second body part (12'b) being formed in a shape that surrounds the first body part (12'a), the present invention is not necessarily limited thereto. As shown in FIGS. 15a to 15c, an opening (12'aa) may be formed on the entire front surface of the first body part (12'a), and the second body part (12'b) may be installed through the opening (12'aa) so as to be rotatable in the direction of the cover part (12') inside the first body part (12'a). In this case, it is preferable that the second body part (12'b) be formed to be inclined downward in the direction of the inner side of the column (10) so that the upper part does not interfere with the first body part (12'a) during the rotational movement.

[0080] The rest of the structure is identical to the basic embodiment described above, so the remaining description will be omitted.

[0082] FIG. 16 is a perspective view illustrating the lower part of a lamp post according to another embodiment of the present invention, and FIG. 17 is a drawing illustrating the state in which an opening / closing part according to another embodiment of the present invention shields an inlet hole.

[0083] As illustrated in FIG. 16, this embodiment is formed with a simpler structure while being able to control the amount of external air flowing in according to the external temperature, just like the previous embodiment.

[0084] In this embodiment, an inlet hole (12a) is formed on the side of the cover (12), and an opening / closing part (40) for opening / closing the inlet hole (12a) is further configured on one side of the cover (12) where the inlet hole (12a) is formed.

[0085] The opening / closing part (40) may be configured to include a hollow ring body (41) installed on the inner circumference of a cover (12) having an inlet hole (12a), a fixed panel (42) formed on the inner side of the ring body (41) to shield the hollow of the ring body (41) and having a first through hole (42a) formed on both sides, and a rotating panel (43) formed rotatably on the front of the fixed panel (42) on the inner side of the ring body (41) and having a second through hole (43a) formed on one side.

[0086] In this embodiment, when the external temperature is higher than a preset reference temperature, the rotating panel (43) is positioned so that the first through hole (42a) and the second through hole (43a) align as shown in FIG. 16, allowing external air to flow into the cover (12) through the first and second through holes (42a, 43a) and into the lamp post (10) through the inlet (11a), thereby causing the lighting unit (30) to radiate heat by the incoming external air. Additionally, the amount of incoming external air can be controlled by rotating the rotating panel (43) to adjust the size of the first through hole (42a) exposed to the outside.

[0087] In addition, when the external temperature is lower than the preset reference temperature, the rotating panel (43) is rotated to block the first through hole (42a) of the first through hole (42a) through which the rotating panel (43) is exposed to the outside, thereby blocking the inflow of external air into the cover (12) and preventing the lighting part (30) from being damaged by the cold external air.

[0088] The rest of the structure is identical to the basic embodiment described above, so the remaining description will be omitted.

[0090] Although the present invention has been described in relation to the preferred embodiments mentioned above, various modifications and variations are possible without departing from the essence and scope of the invention. Accordingly, the appended claims will include such modifications and variations that fall within the essence of the invention. Explanation of the symbols

[0092] 10 : Dengzhou 11 : Body part 11a : Inlet 11b : China 12 : Cover 12a : Inlet port 12' : Cover 12'a : 1st body part 12'aa : opening 12'b : Second body part 12'ba : Inlet 13: Extension part 13a : Bent section 13b : Nut member 13ba : Nut hole 20 : Support tube 21 : Joint 21a : Connecting hole 22 : Air transfer pipe 22a : Air passage 22b : First passage 22c: Second Passover 22d : Third Passage 30 : Lighting section 31 : Case 31a : Heat dissipation space 31b: First air outlet 31c: Second air outlet 32 : Lighting unit 33 : Heatsink 33a : Euro 34: 1st shielding section 35 : Second shielding section 35a : Exhaust port 40 : Opening / closing part 41 : Ringche 42 : Fixed panel 42a: 1st through hole 43 : Rotating panel 43a : Second through hole

Claims

Claim 1 A lamp post having an inlet formed at the bottom for external air to enter and a hollow formed therein for the air entering the interior to move upward; a support tube body having an air passage formed therein, one end of which is connected to the upper end of the lamp post so that the air passage communicates with the hollow, and which is formed extending outwardly from the lamp post; and a lighting unit connected to one side of the support tube body and emitting light downward to illuminate a predetermined lighting area, wherein the lamp post includes a body part having an inlet formed at the bottom for external air to enter and a hollow formed therein for the air entering the interior to move upward, and an extension part integrally connected to a nut member that is formed extending upward from the upper end of the body part, at least one side of which is bent to have a diameter smaller than the diameter of the body part, and has a nut hole formed on one side of the side, and the support tube body includes a coupling part inserted into the extension part, wherein a coupling hole is formed on one side of the coupling part corresponding to the nut member, and a fastening means passes through the coupling hole and is screw-coupled to the nut member, thereby A street light having a lamppost fastening structure with improved durability, characterized in that the connecting part is connected to the extension part.

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