LED luminaire

Abstract

The present invention relates to an LED lighting fixture. An LED lighting fixture according to one embodiment of the present invention may include a plurality of light source modules, a floodlight housing having a stepped structure in which a plurality of floodlight housing module mounting portions are arranged at different heights so as to mount each of the plurality of light source modules, and a support bracket coupled to the floodlight housing so as to install the floodlight housing on a support. An air passage is formed between adjacent light source modules of the floodlight housing, and heat generated from the plurality of light source modules is configured to be discharged to the outside by natural convection along the air passage, thereby reducing or preventing heat dissipation interference between adjacent light source modules.

Description

Technology Field

[0001] The present invention relates to an LED lighting fixture, and more specifically, to an LED lighting fixture in which a plurality of light source modules are arranged at different heights in a stepped housing structure to reduce or prevent heat dissipation interference and improve natural convection cooling effects. Background Technology

[0002] LED lighting technology is widely utilized in various fields due to its high luminous efficiency, long lifespan, and energy-saving characteristics. In applications such as streetlights, security lights, floodlights, tunnel lights, landscape lights, and plant growth lights, LED lighting is replacing conventional lighting technologies, and its importance is steadily growing. In particular, high-output LED fixtures generally adopt a method of arranging multiple light source modules to achieve the required illuminance and light distribution characteristics. However, LEDs generate significant heat during operation, and if this heat is not effectively dissipated, problems such as reduced luminous efficiency, changes in color characteristics, shortened lifespan, and increased power consumption may occur. Therefore, in high-output LED fixtures, the arrangement structure of the light source modules and the heat dissipation structure of the housing act as critical factors determining product performance.

[0003] However, conventional high-power LED fixtures generally adopt a planar structure in which multiple light source modules are arranged on the same plane or at similar heights. In such a structure, even if a heat sink is provided on the rear of each light source module, heat generated from the lower module is likely to transfer to the upper module, causing thermal interference between modules. Consequently, heat accumulates in the modules located higher up, and the temperature variation between modules increases, leading to a problem where the overall heat dissipation efficiency of the fixture is reduced. Furthermore, while attempts are made to improve heat dissipation performance by expanding the surface area of ​​the heat sink or applying forced convection devices such as fans, these measures can result in structural complexity, an increase in the number of components, higher manufacturing costs, noise generation, and additional power consumption. Particularly for outdoor lighting fixtures, which must simultaneously satisfy dustproof, waterproof, and heat dissipation performances, forced cooling methods have limitations in terms of reliability and maintenance.

[0004] Furthermore, even when multiple light source modules operate under identical conditions, modules located at heat concentrations are exposed to relatively higher temperatures, resulting in uneven temperature distribution across modules. This accelerates photodegradation in specific modules, which can reduce the lifespan and reliability of the entire luminaire. Additionally, conventional flat housing structures fail to fully utilize natural convection, hindering the smooth intake of external air and exhaust of internal air. These structural limitations restrict the improvement of heat dissipation performance without a separate cooling device and act as a factor that limits the design freedom of high-output multi-module LED luminaires. The problem to be solved

[0006] The objective of the present invention is to provide an LED lighting fixture that improves heat dissipation performance, increases cooling efficiency, reduces power consumption, and enhances the lifespan and reliability of the product through a housing structure equipped with a plurality of light source modules. means of solving the problem

[0007] In one embodiment of the present invention, an LED lighting fixture may be provided. The LED lighting fixture may include a plurality of light source modules, a floodlight housing having a stepped structure formed by arranging a plurality of floodlight housing module mounting portions at different heights so that each of the plurality of light source modules is mounted thereon, and a support bracket coupled to the floodlight housing so that the floodlight housing is installed on a support.

[0008] In one embodiment of the present invention, the LED lighting fixture may include a street light housing having a stepped structure comprising a plurality of light source modules, a plurality of street light housing side cover module mounting plates arranged at different heights so that each of the plurality of light source modules is mounted, and a pole mounting member coupled to the street light housing so that the street light housing is installed on a pole.

[0009] In one embodiment of the present invention, the light source module may include a heat sink, a conductive tape disposed in contact with the heat sink, a substrate disposed in contact with the conductive tape, a silicone gasket disposed on the front side of the substrate, and a module cover coupled with the silicone gasket in between.

[0010] In one embodiment of the present invention, a plurality of heat sink protrusions may be formed on the heat sink to release heat generated from the light source module to the outside.

[0011] In one embodiment of the present invention, the silicone gasket includes a silicone gasket protrusion, and the module cover may include a module cover groove into which the silicone gasket protrusion is inserted.

[0012] In one embodiment of the present invention, the module cover may include a module cover diffuser for diffusing or irradiating light from a light source to the outside.

[0013] In one embodiment of the present invention, a floodlight housing having a plurality of floodlight housing module mounting portions arranged at different heights to form a stepped structure comprises a floodlight housing light cover, a floodlight housing side cover, a floodlight housing bracket, and a floodlight housing upper cover, wherein a plurality of floodlight housing light cover ventilation holes are formed in the floodlight housing light cover, and a plurality of floodlight housing side cover ventilation holes may be formed in the floodlight housing side cover.

[0014] In one embodiment of the present invention, the ventilation holes in the light cover of the floodlight housing and the ventilation holes in the side cover of the floodlight housing may be connected to an air passage so that cold air from the outside is introduced and heated air from the inside is discharged.

[0015] In one embodiment of the present invention, an LED lighting fixture may be provided. The LED lighting fixture may include a support bracket comprising a floodlight connection part and a support connection part. A floodlight connection part may have a central hole and a plurality of floodlight connection part angle holes formed therein. A support connection hole, a support angle hole, and a support angle limiting hole may be formed in the support connection part.

[0016] In one embodiment of the present invention, the LED lighting fixture may include a street light housing, a street light housing light cover, and a street light housing side cover. A plurality of street light housing light cover ventilation holes may be formed in the street light housing light cover. A plurality of street light housing side cover ventilation holes may be formed in the street light housing side cover.

[0017] In one embodiment of the present invention, a street light housing wire hole through which a wire passes may be formed in the street light housing light cover. A street light housing support mounting hole may be provided in the street light housing. A street light housing support mounting hole may be formed in the street light housing support mounting hole.

[0018] In one embodiment of the present invention, the support mounting member may include a housing fastening part coupled to a street light housing, an angle adjustment part for adjusting the installation angle of the street light housing, and a support mounting part coupled to a support.

[0019] In one embodiment of the present invention, a housing fastening portion wire hole through which a wire passes may be formed in the housing fastening portion.

[0020] In one embodiment of the present invention, the floodlight housing or streetlight housing may be formed of aluminum or an aluminum alloy.

[0021] In one embodiment of the present invention, a plurality of light source modules may be independently arranged in each stepped structure. It may be configured to reduce and prevent heat rising from the lower light source module from interfering with the heat dissipation of the upper light source module.

[0022] In one embodiment of the present invention, the LED lighting fixture is formed such that the ventilation holes of the side covers of the floodlight housing correspond one-to-one with each of the different heights of the plurality of floodlight housing module mounting parts, and a heat dissipation path is provided such that external air is introduced through each of the ventilation holes of the side covers of the floodlight housing arranged in the multi-stages, absorbs heat from the light source module located at the corresponding height, and then sequentially exits to the outside through the ventilation holes of the floodlight housing covers formed in the floodlight housing covers. Effects of the invention

[0023] According to one embodiment of the present invention, by forming a stepped housing structure such that a plurality of light source modules are arranged at different heights, heat dissipation interference between adjacent light source modules can be reduced or prevented.

[0024] In addition, according to one embodiment of the present invention, excellent heat dissipation performance can be secured without a separate forced cooling device by promoting natural convection through an air passage formed between stepped housings.

[0025] In addition, according to one embodiment of the present invention, by maintaining a uniform temperature distribution of the light source module, a decrease in light efficiency can be prevented, power consumption can be reduced, and the lifespan and reliability of the product can be improved.

[0026] Furthermore, according to one embodiment of the present invention, by omitting a forced cooling device such as a fan, the structure can be simplified, manufacturing costs and maintenance burdens can be reduced, and eco-friendliness can be ensured. Brief explanation of the drawing

[0027] FIG. 1 is a perspective view of an LED lighting fixture in which a light source module, a floodlight housing, and a support bracket are combined according to a first embodiment. FIG. 2 is a perspective view showing an LED lighting fixture according to the first embodiment from a different direction. FIG. 3 is an exploded view of an LED lighting fixture according to the first embodiment. FIG. 4 is a perspective view illustrating the combined state of a light source module applied to the first embodiment. Figure 5 is an exploded perspective view illustrating a light source module. Figure 6 is an exploded perspective view of the light source module shown from the opposite side. Figure 7 is a cross-sectional view of the side of the light source module cover. FIG. 8 is a perspective view showing the state in which each component is assembled inside the floodlight housing. FIG. 9 is a perspective view of a floodlight housing cover. FIG. 10 is a perspective view of the side cover of the floodlight housing. FIG. 11 is a perspective view of a housing bracket. FIG. 12 is a perspective view of the floodlight housing module mounting part. Fig. 13 is a perspective view of a support bracket. FIGS. 14 and 15 are drawings illustrating the flow of external air being drawn in and heated air being discharged in an LED lighting fixture according to the first embodiment. FIG. 16 is a diagram illustrating the state in which the angle of an LED lighting fixture according to the first embodiment is adjusted. FIG. 17 is an installation diagram of an LED lighting fixture according to the first embodiment. FIG. 18 is a perspective view of an LED lighting fixture in which a light source module, a street light housing, and a pole mounting bracket are combined according to a second embodiment. FIG. 19 is a perspective view showing an LED lighting fixture according to a second embodiment from a different direction. FIG. 20 is an exploded perspective view of an LED lighting fixture according to a second embodiment. FIG. 21 is a perspective view of a street light housing cover. FIG. 22 is a perspective view of a street light housing side cover. FIG. 23 is a perspective view of a street light pole mounting bracket. FIG. 24 is a perspective view of a support mounting bracket. FIGS. 25 and 26 are drawings illustrating the flow of heated air flowing out to the outside as external air is introduced into an LED lighting fixture according to a second embodiment. FIG. 27 is a diagram illustrating the state in which the angle of an LED lighting fixture according to the second embodiment is adjusted. FIG. 28 is an installation diagram of an LED lighting fixture according to the second embodiment. Specific details for implementing the invention

[0028] The following description of the present invention with reference to the drawings is not limited to specific embodiments and may be subject to various modifications and have various embodiments. Furthermore, it should be understood that the content described below includes all modifications and substitutions that fall within the spirit and scope of the present invention.

[0029] In the following description, terms such as "first," "second," etc., are used to describe various components and are not limited in their meaning; they are used solely for the purpose of distinguishing one component from another.

[0030] Identical reference numbers used throughout this specification indicate identical components.

[0031] The singular expressions used in the present invention include the plural expressions unless the context clearly indicates otherwise. Furthermore, terms such as "comprising," "equipping," or "having" described below should be interpreted as indicating the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not excluding in advance the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0032] In this specification, the term “staircase structure” means a structure in which a plurality of floodlight housing module mounting parts (240) or streetlight housing side cover module mounting plates (421) on which a plurality of light source modules (100) are mounted are not arranged on the same plane along a reference plane, but are arranged to have a height difference that is spaced apart from each other in at least one direction.

[0033] In addition, “different heights” refers to a state in which the reference surface heights of two adjacent floodlight housing module mounting parts (240) or streetlight housing side cover module mounting plates (421) are not the same, and the height difference can be set so that air flow can be formed by natural convection.

[0034] Furthermore, the term “air passage” is a concept that includes a space or passage formed between adjacent light source modules (100), or between adjacent floodlight housing module mounting parts (240) or streetlight housing side cover module mounting plates (421), through which outside air is introduced and heated air is discharged.

[0035] In this specification, “heat dissipation interference” refers to a phenomenon in which heat rising from one light source module (100) is directly introduced into the surroundings of an adjacent light source module (100), thereby reducing the cooling efficiency of the other light source module (100).

[0036] In addition, “direct interference” means a state in which heat rising from the lower light source module (100) reaches the lower or rear of the upper light source module (100) directly without a separate blocking structure or bypass path.

[0037] Meanwhile, the term “topmost opening” refers to a part formed on the uppermost side of a stepped structure that is open to allow heated air inside to be discharged to the outside, and may include an upper ventilation hole, an exhaust port, or an opening equivalent thereto.

[0038] FIG. 1 is a perspective view of an LED lighting fixture in which a light source module (100), a floodlight housing (200), and a support bracket (300) are combined according to a first embodiment.

[0039] Referring to FIG. 1, an LED lighting fixture according to a first embodiment of the present invention may include a plurality of light source modules (100), a floodlight housing (200), and a support bracket (300). The LED lighting fixture may be formed by combining each component to form a single finished product. The LED lighting fixture may be used as an outdoor lighting device such as a street light, security light, floodlight, or tunnel light.

[0040] A light source module (100) can be a basic unit for generating light. Multiple light source modules (100) can be installed in a floodlight housing (200). Each light source module (100) can operate independently or operate in conjunction with a group.

[0041] The floodlight housing (200) can form the overall framework of the LED lighting fixture. The floodlight housing (200) can perform the role of supporting and protecting a plurality of light source modules (100). The floodlight housing (200) may include a plurality of floodlight housing module mounting parts (240) so that a plurality of light source modules (100) are each mounted. The plurality of floodlight housing module mounting parts (240) may be arranged at different heights to form a stepped structure. An air passage may be formed between adjacent light source modules (100). Heat generated from the plurality of light source modules (100) can be discharged to the outside by natural convection along the air passage. Through this configuration, heat dissipation interference between adjacent light source modules (100) can be reduced or prevented. In addition, the floodlight housing (200) can also function as a heat sink to discharge heat generated from the light source modules (100) to the outside.

[0042] According to the present invention, since a plurality of light source modules (100) are arranged in a stepped structure rather than on the same plane, even if heat generated from the lower light source module (100) rises directly in the vertical direction, it is difficult for it to stagnate immediately below the upper light source module (100).

[0043] In particular, the stepped space formed between adjacent floodlight housing module mounting parts (240) or floodlight housing side covers (220) acts as a passageway for upward airflow, so that the surrounding heat of each light source module (100) can be dispersed and discharged to the outside.

[0044] Accordingly, compared to the case where multiple light source modules (100) are arranged side by side on a plane, heat accumulation and heat re-inflow between modules are reduced, and the individual cooling efficiency of each module can be improved.

[0045] In one embodiment of the present invention, the floodlight housing (200) may be formed of a material with high thermal conductivity. For example, the floodlight housing (200) may be aluminum, aluminum alloy, copper, copper alloy, magnesium, magnesium alloy, stainless steel, titanium alloy, nickel-based alloy, carbon steel, galvanized steel sheet, cold rolled steel sheet, hot rolled steel sheet, or carbon fiber reinforced polymer (CFRP) thermally conductive plastic, ceramic matrix composite, or graphene coated material. However, the present invention is not limited thereto.

[0046] The choice of material for the floodlight housing (200) can be determined by considering heat dissipation performance, structural strength, corrosion resistance, and manufacturing cost.

[0047] The support bracket (300) can serve to fix the floodlight housing (200) to the support. The support bracket (300) can be attached to one side of the floodlight housing (200). The support bracket (300) can provide a function to adjust the illumination angle of the LED light fixture. The user can set the installation angle of the LED light fixture to illuminate in a desired direction using the support bracket (300).

[0048] FIG. 2 is a perspective view showing an LED lighting fixture according to the first embodiment from a different direction.

[0049] Referring to FIG. 2 in conjunction with FIG. 1, the LED light fixture may include a floodlight housing (200) and a support bracket (300). Details regarding the floodlight housing (200) that overlap with those described in FIG. 1 may be omitted. The floodlight housing (200) may accommodate a plurality of light source modules (100) internally and perform the function of protecting them from the external environment. The floodlight housing (200) may include a plurality of floodlight housing module mounting parts (240). A plurality of light source modules (100) may each be mounted on a plurality of floodlight housing module mounting parts (240). A plurality of floodlight housing module mounting parts (240) may be arranged at different heights to form a stepped structure. Additionally, the floodlight housing (200) may have a heat dissipation function that effectively releases heat generated from the light source modules (100) to the outside.

[0050] An air passage may be formed between adjacent floodlight housing module mounting portions (240) of floodlight housings (200). Heat generated from a plurality of light source modules (100) may be discharged to the outside by natural convection along the air passage. This configuration may reduce or prevent heat dissipation interference between adjacent light source modules (100).

[0051] The material of the floodlight housing (200) can rapidly conduct heat generated from the light source module (100) to the entire housing, thereby maximizing the heat dissipation area.

[0052] Regarding the support bracket (300), details that overlap with those described in FIG. 1 may be omitted. The support bracket (300) is coupled to the side of the floodlight housing (200) and can perform the function of fixing the LED light fixture to the support. The support bracket (300) may be provided with a structure for adjusting the illumination angle of the floodlight housing (200). As shown in FIG. 2, the support bracket (300) may have a central hole (311) for the floodlight connection part and a plurality of arc-shaped angle holes (312) for the floodlight connection part formed therein.

[0053] The user can adjust the tilt of the floodlight housing (200) using the angle hole (312) of the floodlight connection part. After being adjusted to the desired angle, the position of the floodlight housing (200) can be firmly fixed by attaching a fastening member to the center hole (311) of the floodlight connection part. Through this structure, the LED light fixture can be installed to precisely illuminate a specific area. The support bracket (300) is formed of the same or similar material as the floodlight housing (200) to ensure a sense of unity and durability.

[0054] FIG. 3 is an exploded view of an LED lighting fixture according to the first embodiment.

[0055] Referring to FIG. 3, the LED lighting fixture may be configured to include a plurality of light source modules (100), a floodlight housing (200), and a support bracket (300). Regarding the light source modules (100), details that overlap with those described in FIG. 1 may be omitted. The plurality of light source modules (100) may each be mounted on a plurality of floodlight housing module mounting portions (240) provided inside the floodlight housing (200).

[0056] The floodlight housing (200) can protect the light source module (100) from the external environment. The floodlight housing (200) can serve as a heat sink to dissipate heat generated from the light source module (100) to the outside. The floodlight housing (200) may include a floodlight housing light cover (210), a plurality of floodlight housing side covers (220), a plurality of floodlight housing brackets (230), a plurality of floodlight housing module mounting parts (240), and a floodlight housing upper cover (250).

[0057] The floodlight housing module mounting portion (240) can provide a space where light source modules (100) can be individually mounted. Multiple floodlight housing module mounting portions (240) can be arranged in a stepped shape to have different heights. An air passage can be formed between adjacent light source modules (100) of the floodlight housing (200). Heat generated from multiple light source modules (100) can be discharged to the outside by natural convection along the air passage. Through this structure, heat dissipation interference between adjacent light source modules (100) can be reduced or prevented.

[0058] The floodlight housing cover (210) may be a component that forms the overall framework of the floodlight housing (200). The floodlight housing cover (210) may serve as a base to which a plurality of floodlight housing module mounting parts (240) are combined. A plurality of floodlight housing cover ventilation holes (211) may be formed on the surface of the floodlight housing cover (210). Air heated inside may be discharged to the outside through the floodlight housing cover ventilation holes (211).

[0059] The floodlight housing side cover (220) may be a member that finishes both sides of the assembled floodlight housing (200). The floodlight housing side cover (220) may cover the sides of the stepped structure to protect internal components. A plurality of floodlight housing side cover ventilation holes (222) may be formed in the floodlight housing side cover (220). The floodlight housing side cover ventilation holes (222) may provide a passage for cold outside air to flow into the interior.

[0060] The floodlight housing bracket (230) can serve to connect and support the components of the floodlight housing (200). For example, the floodlight housing bracket (230) can firmly secure the floodlight housing light cover (210) and the floodlight housing side cover (220). The floodlight housing bracket (230) can improve the structural strength of the floodlight housing (200).

[0061] The floodlight housing upper cover (250) can be attached to the upper part of the floodlight housing light cover (210). The floodlight housing upper cover (250) can protect internal electronic components from external foreign substances such as rainwater or dust.

[0062] Regarding the support bracket (300), details that overlap with those described in FIG. 2 may be omitted. The support bracket (300) can be used to install the assembled floodlight housing (200) on a support or support. In one embodiment of the present invention, the support bracket (300) may include a floodlight connection part (310) and a support connection part (320). A floodlight connection part (310) may have a floodlight connection part center hole (311) and a plurality of floodlight connection part angle holes (312) formed therein. A support connection part (320) may have a support connection hole (321), a support angle hole (322), and a support angle limiting hole (323) formed therein. A user can adjust the illumination angle of the LED light fixture using the floodlight connection part angle hole (312) and the support angle hole (322), etc.

[0063] FIG. 4 is a perspective view illustrating the combined state of a light source module (100) applied to the first embodiment.

[0064] Referring to FIG. 4, the light source module (100) may be a light-emitting part of an LED light fixture. The light source module (100) may perform the function of generating light and irradiating it outward. The light source module (100) may include a heat sink (110) and a substrate (130).

[0065] The heat sink (110) can absorb heat generated from a light source element mounted on a substrate (130). The heat sink (110) can perform the function of releasing the absorbed heat to the outside. For example, the heat sink (110) may be aluminum, copper, aluminum alloy, copper alloy, magnesium, magnesium alloy, graphene composite, carbon nanotube (CNT) composite, aluminum nitride ceramic, boron nitride ceramic, silicon carbide (SiC), diamond-like carbon (DLC) coating material, or a thermally conductive polymer. However, the present invention is not limited thereto.

[0066] The heat dissipation of the heat sink (110) can contribute to maintaining the light efficiency, lifespan, and reliability of the light source module (100).

[0067] The heat sink (110) may be configured to include a plurality of heat sink protrusions (111). The heat sink protrusions (111) can serve to increase the surface area of ​​the heat sink (110) and the contact area with air. The plurality of heat sink protrusions (111) can promote heat exchange with the surrounding air to maximize the cooling effect by natural convection. The arrangement and shape of the heat sink protrusions (111) can be designed to facilitate smooth airflow.

[0068] In one embodiment of the present invention, the shape, number, height, and spacing of the heat sink protrusions (111) can be adjusted according to the amount of heat generated by the light source module (100) and the installation environment of the LED lighting fixture. For example, in the case of a high-output light source module (100), the heat sink protrusions (111) can be arranged more densely. The heat dissipation performance can be enhanced by increasing the height of the heat sink protrusions (111). The surface of the heat sink (110) can increase the thermal emissivity through anodizing treatment or black body paint coating. The treatment of the surface of the heat sink (110) can further improve the radiative heat dissipation efficiency.

[0069] A plurality of heat sink protrusions (111) may be formed on one side of the heat sink (110). The plurality of heat sink protrusions (111) may function as passages for discharging heat generated from the light source module (100) to the outside. Each heat sink protrusion (111) may have a structure that maximizes the surface area in contact with air to increase heat transfer efficiency. The structure of the heat sink protrusions (111) may enable heat dissipation without a separate cooling fan.

[0070] The substrate (130) may be a component on which a light source element, such as a light-emitting diode (LED) chip, is mounted. The substrate (130) may include a circuit pattern for supplying power to the substrate LED (131) chip. The substrate (130) may provide a heat conduction path to transfer heat generated from the substrate LED (131) chip to a heat sink (110). For example, the substrate (130) may be a metal core printed circuit board (MCPCB), a ceramic substrate, an insulated metal substrate (IMS), a direct bonded copper (DBC) substrate, an active metal brazing (AMB) substrate, an alumina substrate, an aluminum nitride (AlN) substrate, a silicon substrate, a diamond substrate, a flexible printed circuit board including thermal vias, or a carbon-based composite substrate. However, the present invention is not limited thereto.

[0071] FIG. 5 is an exploded perspective view illustrating a light source module (100).

[0072] Referring to FIG. 5 together with FIG. 4, the light source module (100) may include a heat sink (110), a conductive tape (120), a substrate (130), a silicone gasket (140), and a module cover (150). The light source module (100) may function as a basic light-emitting unit of an LED light fixture. Each component of the light source module (100) may be sequentially combined to form a single integrated module.

[0073] Regarding the heat sink (110), details that overlap with those described in FIG. 4 may be omitted. The heat sink (110) can effectively dissipate heat generated from the light source module (100) to the outside. The heat sink (110) may include a plurality of heat sink protrusions (111) and heat sink holes (112) for connecting wires to the substrate (130). The heat sink (110) may be formed from a material having high thermal conductivity.

[0074] The heat sink protrusion (111) can increase the surface area of ​​the heat sink (110) to increase the contact area with air. This structure can maximize the heat dissipation efficiency through natural convection. The heat sink hole (112) can be used to connect wires from an external power supply to the substrate (130).

[0075] In one embodiment of the present invention, the shape, number, and arrangement of the heat sink protrusions (111) can be optimized according to the usage environment of the lighting fixture and the required heat dissipation performance. For example, the heat sink protrusions (111) can be implemented in various forms, such as a fin shape, a rod shape, or a wave shape. The material of the heat sink (110) can be selected considering lightweighting and heat dissipation performance.

[0076] A conductive tape (120) can be placed between a heat sink (110) and a substrate (130). The conductive tape (120) can act as a thermal interface material that helps efficiently transfer heat generated from the substrate (130) to the heat sink (110). The conductive tape (120) can reduce thermal resistance by removing fine air layers. The conductive tape (120) can improve contact reliability between the two components.

[0077] In one embodiment of the present invention, the conductive tape (120) may have thermally conductive adhesive properties. This simplifies the assembly process and assists in fixing strength. For example, the thermal interface material may be a thermal pad, thermal grease, thermal epoxy, phase change material, graphene sheet, carbon nanotube composite, metal filler-containing polymer, ceramic-based paste, liquid metal, thermal gel, or conductive film. However, the present invention is not limited thereto.

[0078] Regarding the substrate (130), details that overlap with those described in FIG. 4 may be omitted. The substrate (130) may be placed on the front of the conductive tape (120). The substrate (130) may include a plurality of substrate LEDs (131) and substrate holes (132). The substrate LEDs (131) may be light source elements mounted on the surface of the substrate (130) to emit light.

[0079] The substrate LED (131) can generate heat along with light when in operation. The substrate (130) can serve as a heat channel to quickly transfer the heat generated from the substrate LED (131) to the conductive tape (120). The substrate hole (132) can be used to facilitate alignment during assembly or as a path to pass specific components, such as wires, through the substrate from an external power supply.

[0080] In one embodiment of the present invention, the substrate (130) may be implemented as a metal core printed circuit board (MCPCB). The MCPCB provides excellent heat dissipation characteristics, which can stably maintain the temperature of the substrate LED (131). The substrate LED (131) may be implemented in various package forms, such as a chip-on-board (COB) type, a surface mount device (SMD) type, or a flip-chip type.

[0081] A silicone gasket (140) may be placed along the edge of the substrate (130). The silicone gasket (140) may serve to seal the interior of the light source module (100) when combined with the module cover (150). This sealing structure can prevent the ingress of moisture, dust, or foreign matter from the outside. The silicone gasket (140) may include a silicone gasket protrusion (141).

[0082] The silicone gasket protrusion (141) may have a structure protruding from the surface of the silicone gasket (140). The silicone gasket protrusion (141) may be inserted into a module cover groove (151) formed in the module cover (150). The combination of the silicone gasket protrusion (141) and the module cover groove (151) can provide more robust and reliable sealing performance.

[0083] In one embodiment of the present invention, the silicone gasket (140) may be formed from a material having excellent weather resistance, heat resistance, and elasticity. For example, silicone rubber, EPDM (Ethylene Propylene Diene Monomer) rubber, or fluororubber may be used. The silicone gasket protrusions (141) may be formed in a double or triple structure to further enhance sealing performance.

[0084] The module cover (150) can be attached to cover the silicone gasket (140). The module cover (150) can protect internal components, such as the substrate LED (131), from external physical impact. The module cover (150) can complete the sealing effect by compressing the silicone gasket (140). The module cover (150) can be fixed to the heat sink (110) through a fastening member.

[0085] The module cover (150) may be formed of a transparent or translucent material through which light can pass. A lens or a diffusion pattern may be formed on the surface or inner surface of the module cover (150) to diffuse or concentrate the light emitted from the substrate LED (131) into a specific pattern. The module cover (150) may complete a sealing structure by including a module cover groove (151) into which a silicone gasket protrusion (141) is inserted.

[0086] In one embodiment of the present invention, the module cover (150) may be made of polycarbonate (PC) or tempered glass, which has strong resistance to ultraviolet (UV) rays and excellent impact resistance. The optical design of the module cover (150) may be optimized to implement a specific light distribution curve. For example, it may form an asymmetric light distribution for road lighting or a symmetric light distribution for floodlighting.

[0087] Referring to FIG. 6, the light source module (100) may include a heat sink (110), a conductive tape (120), a substrate (130), a silicon gasket (140), and a module cover (150). FIG. 6 may show the state of the components of the light source module (100) before they are combined from the opposite side. Each component may be sequentially stacked and combined to form an independent light source module (100).

[0088] The light source module (100) may include a heat sink (110), a conductive tape (120), a substrate (130), a silicon gasket (140), and a module cover (150).

[0089] A conductive tape (120) can be attached between the substrate (130) and the heat sink (110) to transfer heat generated from the substrate (130) to the heat sink (110).

[0090] A silicone gasket (140) is positioned at a location corresponding to the edge of the substrate (130) or module cover (150) to prevent the ingress of external moisture or dust.

[0091] The module cover (150) can be connected to the heat sink (110) by a fastening member, and at this time, a sealing structure can be formed by compressing the silicone gasket (140).

[0092] Regarding the heat sink (110), details that overlap with those described in FIGS. 4 and FIGS. 5 may be omitted. The heat sink (110) can perform the function of absorbing heat generated from the substrate (130) and releasing it to the outside. A plurality of heat sink protrusions (111) may be formed on the heat sink (110). The plurality of heat sink protrusions (111) can increase the surface area in contact with air to improve heat release efficiency.

[0093] Regarding the conductive tape (120), details that overlap with those described in FIG. 5 may be omitted. The conductive tape (120) may be interposed between the rear surface of the substrate (130) and the front surface of the heat sink (110). The conductive tape (120) may be composed of a material with high thermal conductivity and may provide a heat transfer path from the substrate (130) to the heat sink (110).

[0094] Regarding the substrate (130), details that overlap with those described in FIGS. 4 and FIGS. 5 may be omitted. A light source, a substrate LED (Light Emitting Diode) (131), may be mounted on the front surface of the substrate (130). The substrate hole (132) of the substrate (130) may be used for passing an external power supply line or for assembly with other components.

[0095] Regarding the silicone gasket (140), details that overlap with those described in FIG. 5 may be omitted. The silicone gasket (140) can be inserted between the edge of the substrate (130) and the module cover (150). The silicone gasket (140) is formed of an elastic material and can seal the inside of the light source module (100) to protect internal components from external moisture or foreign substances. In one embodiment of the present invention, the silicone gasket (140) may include a silicone gasket protrusion (141).

[0096] The module cover (150) can cover the substrate (130) and mounted components to protect them from external shocks. The module cover (150) can be pressed against the silicone gasket (140). This allows the overall airtight structure of the light source module (100) to be completed. The module cover (150) can be made of a transparent or translucent material that can effectively transmit light.

[0097] The module cover (150) may include a module cover groove (151) and a module cover diffuser (152). The module cover groove (151) may be a concave structure formed so that a silicone gasket protrusion (141) can be inserted into it. The combination of the module cover groove (151) and the silicone gasket (140) can contribute to improving waterproof and dustproof performance by increasing the adhesion. The module cover diffuser (152) may be formed at a position corresponding to each of the substrate LED (131) light sources mounted on the substrate (130). The module cover diffuser (152) can control the path of light to achieve desired light distribution characteristics.

[0098] In one embodiment of the present invention, the module cover diffuser (152) may include a lens, reflector, or prism structure. Depending on the optical design of the module cover diffuser (152), it may be possible to concentrate light in a specific direction or diffuse it over a wide area. For example, the module cover (150) may be made of polycarbonate, acrylic, polymethyl methacrylate (PMMA), reinforced glass, optical silicon, cyclic olefin copolymer (COC), polyetherimide (PEI), polysulfone (PSU), heat-resistant nylon, epoxy resin, fluororesin, or UV-curable resin. However, the present invention is not limited thereto.

[0099] FIG. 7 is a cross-sectional view of the light source module cover (150).

[0100] Referring to FIGS. 6 and FIGS. 7, details regarding the module cover (150) that overlap with those described in FIG. 6 may be omitted. The module cover (150) can serve to protect the internal components of the light source module (100) from the external environment. The module cover (150) can provide a passage that allows light emitted from the substrate LED (131) to be transmitted to the outside. The module cover (150) may include a module cover groove (151) and a module cover diffuser (152).

[0101] The module cover groove (151) may be a concave structure formed on the edge portion of the module cover (150). A silicone gasket protrusion (141) formed on the silicone gasket (140) may be inserted into the module cover groove (151) in correspondence. The silicone gasket (140) may include the silicone gasket protrusion (141). By inserting the silicone gasket protrusion (141) into the module cover groove (151) and ensuring close contact, an airtight structure may be formed between the internal space and the external space of the light source module (100). This combined structure can improve the durability and reliability of the product by blocking external moisture, dust, or foreign substances from penetrating into the light source module (100).

[0102] The module cover diffuser (152) may be a structure formed on the inner surface of the module cover (150) to control the path of light. The module cover diffuser (152) can diffuse or concentrate light coming from a plurality of substrate LEDs (131) mounted on the substrate (130) to achieve a desired light distribution. For example, the module cover diffuser (152) may be configured in the form of a lens array corresponding to each individual substrate LED (131). The illumination angle, uniformity, and anti-glare performance of the LED luminaire may be determined according to the optical design of the module cover diffuser (152).

[0103] In one embodiment of the present invention, the module cover (150) may be made of a material having high light transmittance, excellent mechanical strength, and weather resistance. For example, the module cover (150) may be polycarbonate, polymethyl methacrylate (PMMA), tempered glass, non-tempered glass, cyclo olefin polymer (COP), polyester, polyethylene terephthalate (PET), acrylic resin, epoxy resin, silicone resin, or polystyrene. However, the present invention is not limited thereto.

[0104] FIG. 8 is a perspective view showing the state in which each component is assembled inside the floodlight housing (200).

[0105] Referring to FIG. 8, the floodlight housing (200) can perform the function of accommodating and protecting a plurality of light source modules (100). The floodlight housing (200) can form the overall exterior of the LED lighting fixture. The floodlight housing (200) can protect internal components from external impact, moisture, dust, etc. The floodlight housing (200) may include a floodlight housing light cover (210), a floodlight housing side cover (220), a floodlight housing bracket (230), a floodlight housing module mounting part (240), and a floodlight housing upper cover (250).

[0106] The floodlight housing (200) can be formed of a material with high thermal conductivity to improve heat dissipation performance. The surface of the floodlight housing (200) can be treated with anodizing, powder coating, or a special heat dissipation coating to maximize the heat dissipation effect.

[0107] Regarding the support bracket (300), details that overlap with those described in FIGS. 1 to 3 are omitted. The support bracket (300) can be coupled to the floodlight housing side cover (220) of the floodlight housing (200). The support bracket (300) can perform the role of supporting the LED light fixture so that it is stably installed on a streetlight support or support body.

[0108] The floodlight housing light cover (210) can form the rear surface of the floodlight housing (200). The floodlight housing light cover (210) may provide structural stability by having a plurality of floodlight housing module mounting parts (240) installed. A plurality of floodlight housing light cover ventilation holes (211) may be formed in the floodlight housing light cover (210) so that air heated inside can be smoothly discharged to the outside.

[0109] The floodlight housing side cover (220) can be attached to both sides of the floodlight housing (200). The floodlight housing side cover (220) can protect the interior by finishing the sides of a plurality of floodlight housing module mounting parts (240) arranged in a stepped manner. The floodlight housing side cover (220) can provide a fastening part to which a support bracket (300) is attached. A plurality of floodlight housing side cover ventilation holes (222) can be formed in the floodlight housing side cover (220).

[0110] The floodlight housing bracket (230) can serve to reinforce the structural strength of the floodlight housing (200). The floodlight housing bracket (230) can be positioned between the floodlight housing side cover (220) and the floodlight housing module mounting part (240). The floodlight housing bracket (230) can prevent the shape of the floodlight housing (200) from being deformed due to external load or vibration.

[0111] The floodlight housing module mounting portion (240) can provide a flat surface on which a light source module (100) is mounted. A plurality of floodlight housing module mounting portions (240) can be arranged in a stepped manner to have different heights. This stepped structure allows each light source module (100) to secure an independent heat dissipation space, thereby minimizing thermal interference between modules.

[0112] The floodlight housing upper cover (250) can cover the upper part of the floodlight housing (200) to protect the interior. The floodlight housing upper cover (250) can protect the space where a power supply device, such as an SMPS (Switching Mode Power Supply), or a control circuit is built from the external environment. The floodlight housing upper cover (250) can have a structure that prevents rainwater or foreign matter from penetrating into the interior.

[0113] FIG. 9 is a perspective view of a floodlight housing light cover (210).

[0114] Referring to FIGS. 8 and 9, the floodlight housing light cover (210) may be a component that constitutes the rear surface of the floodlight housing (200). The floodlight housing light cover (210) may serve to protect the internal components of the floodlight housing (200) from the external environment. Additionally, the floodlight housing light cover (210) may function as part of a heat dissipation path that releases heat generated inside the light fixture to the outside. The floodlight housing light cover (210) may include a plurality of floodlight housing light cover ventilation holes (211) and floodlight housing light cover wire holes (212).

[0115] The floodlight housing cover (210) can be manufactured in a shape corresponding to the stepped structure of the floodlight housing (200). This shape can contribute to forming an air passage that guides the heated air inside to move smoothly upward and be discharged. The floodlight housing cover (210) can be formed from a material with high thermal conductivity. The floodlight housing cover (210) can effectively discharge heat transferred from the light source module (100) to the outside atmosphere through its surface.

[0116] In one embodiment of the present invention, the floodlight housing cover (210) can be precisely manufactured through aluminum die casting, extrusion, or CNC machining. Anodizing treatment or powder coating may be applied to the surface of the floodlight housing cover (210). Such surface treatment can improve corrosion resistance. Additionally, the surface treatment can optimize radiative heat dissipation performance.

[0117] A plurality of ventilation holes (211) may be formed in the light fixture housing cover (210). The ventilation holes (211) and the side cover ventilation holes (222) of the light fixture housing may be configured to communicate with an air passage. Through this configuration, cold air from the outside can be introduced, and heated air from the inside can be discharged. Specifically, external air can be introduced through the ventilation holes (211) and the side cover ventilation holes (222) of the light fixture housing located at the bottom of the light fixture. The introduced external air can rise after absorbing heat from the light source module (100). The heated air that rises can be discharged through the ventilation holes (211) of the light fixture housing housing located at the top of the light fixture housing (200). This air circulation structure allows high-temperature air, which naturally rises due to the difference in density, to quickly escape to the outside without stagnation. As a result, the heat dissipation efficiency of the entire lighting fixture can be improved.

[0118] In one embodiment of the present invention, the shape, size, and arrangement pattern of the ventilation holes (211) of the light fixture housing cover can be optimized through aerodynamic design. For example, the ventilation holes (211) of the light fixture housing cover may be slot-shaped, circular, elliptical, square, hexagonal, octagonal, rhombus-shaped, star-shaped, triangular, pentagonal, or louver-shaped. However, the present invention is not limited thereto. Additionally, a waterproof filter or an insect screen may be provided inside the ventilation holes (211) of the light fixture housing cover. This prevents the entry of rainwater, dust, or foreign substances into the interior without obstructing air circulation.

[0119] The floodlight housing light cover wire hole (212) may be an opening formed at a specific location in the floodlight housing light cover (210). The floodlight housing light cover wire hole (212) may provide a path for passing wires introduced from an external power source or control device. Through the floodlight housing light cover wire hole (212), the wires may be connected to an internal SMPS (Switching-Mode Power Supply) or light source module (100).

[0120] In one embodiment of the present invention, a component such as a cable gland or a rubber grommet may be attached to the wire hole (212) of the light bulb housing cover. Such a component may serve to secure and protect the passing wire.

[0121] FIG. 10 is a perspective view of the side cover (220) of the floodlight housing.

[0122] Referring to FIG. 10, the floodlight housing side cover (220) may be a member that forms the side structure of the floodlight housing (200). The floodlight housing side cover (220) may be combined with the floodlight housing light cover (210) to form the overall external shape of the floodlight housing (200). The floodlight housing side cover (220) may perform the role of protecting internal components from the external environment. The floodlight housing side cover (220) may include a floodlight housing side cover module mounting plate (221), a plurality of floodlight housing side cover ventilation holes (222), a floodlight housing side cover center hole (223), and a plurality of floodlight housing side cover angle holes (224).

[0123] The floodlight housing side cover module mounting plate (221) may be formed protrudingly on the inner surface of the floodlight housing side cover (220). The floodlight housing side cover module mounting plate (221) can perform the function of stably supporting the light source module (100) together with the floodlight housing module mounting part (240). A plurality of floodlight housing side cover module mounting plates (221) may be arranged in a stepped shape at different heights so that the floodlight housing (200) has a stepped structure overall.

[0124] Some light source modules (100) installed on the outer side of the interior of the floodlight housing (200) may have one side installed on the floodlight housing side cover module mounting plate (221) and the other side installed on the floodlight housing module mounting plate (241).

[0125] The ventilation holes (222) on the side cover of the floodlight housing may be formed in multiple locations on both end regions of the side cover (220) of the floodlight housing. The ventilation holes (222) on the side cover of the floodlight housing may form an air passage through which external air flows into the floodlight housing (200) or internal air is discharged to the outside. These ventilation holes (222) on the side cover of the floodlight housing may contribute to improving the natural convection cooling performance of the LED light fixture.

[0126] In one embodiment of the present invention, a plurality of ventilation holes (222) on the side covers of the light-emitting housing may be arranged in multiple rows along the vertical direction. Each of the ventilation holes (222) arranged in multiple rows may be positioned to correspond one-to-one with a plurality of module mounting parts (240) located at different heights. This structure can maximize cooling efficiency by inducing cold outside air to flow directly into the height at which each heat-generating light source module (100) is located.

[0127] The ventilation holes (222) on the side covers of the floodlight housing can be connected to the ventilation holes (211) on the light cover of the floodlight housing to provide a heat dissipation path. External air can be drawn in through each ventilation hole (222) on the side covers of the floodlight housing and absorb heat from the light source module (100) located at the corresponding height. The air, whose temperature has risen after absorbing heat, can rise due to convection. The rising air can exit to the outside through the ventilation holes (211) on the light cover of the floodlight housing located at the top.

[0128] The central hole (223) of the floodlight housing side cover can be formed in the central part of the floodlight housing side cover (220). The central hole (223) of the floodlight housing side cover can function as a passage through which a fastening member connecting the floodlight housing (200) and the support bracket (300) passes. Additionally, the central hole (223) of the floodlight housing side cover can serve as a central axis of rotation when adjusting the illumination angle of the LED light fixture.

[0129] Multiple floodlight housing side cover angle holes (224) can be arranged along an arc trajectory centered on the floodlight housing side cover center hole (223). The floodlight housing side cover angle holes (224) can be used by a user to set and fix the illumination angle of the LED fixture to a specific angle. A desired illumination angle can be maintained by fastening a fixing member to the floodlight housing side cover angle holes (224) that are optionally aligned with the holes formed in the support bracket (300).

[0130] FIG. 11 is a perspective view of a housing bracket (230).

[0131] Referring to FIG. 11, the floodlight housing bracket (230) may be a component that reinforces the structural stability of the floodlight housing (200) and supports an angle adjustment mechanism. The floodlight housing bracket (230) may be coupled to the inner side of the floodlight housing side cover (220) to improve the connection strength with the support bracket (300). The floodlight housing bracket (230) may be implemented as a plate-shaped member and may contribute to maintaining the shape of the floodlight housing (200) against external forces or vibrations.

[0132] The floodlight housing bracket (230) can play an important role in the illumination angle adjustment function of the LED light fixture. The floodlight housing bracket (230) is interposed between the support bracket (300) and the floodlight housing side cover (220) to distribute the fastening force of the bolt and nut. Through this, the floodlight housing bracket (230) can prevent the fastening state of the angle adjustment part from becoming loose even after long-term use and can maintain a stable fixed state.

[0133] In one embodiment of the present invention, the floodlight housing bracket (230) may be manufactured from a metal material having high rigidity and durability. For example, the floodlight housing bracket (230) may be stainless steel, galvanized steel, aluminum alloy, titanium alloy, nickel alloy, copper alloy, magnesium alloy, engineering plastic, carbon fiber reinforced plastic (CFRP), glass fiber reinforced plastic (GFRP), or metal matrix composite. However, the present invention is not limited thereto. Additionally, the surface of the floodlight housing bracket (230) may be anodized, powder coated, or specially coated to prevent corrosion.

[0134] The floodlight housing bracket (230) may include a floodlight housing bracket center nut hole (231) and a plurality of floodlight housing bracket angle nut holes (232). The floodlight housing bracket center nut hole (231) may be formed at a position corresponding to the rotational center axis of the floodlight housing bracket (230). The floodlight housing bracket center nut hole (231) may be aligned coaxially with the floodlight housing side cover center hole (223) and the floodlight connection part center hole (311) of the support bracket (300) so that a rotational center bolt can pass through it.

[0135] Multiple floodlight housing bracket angle nut holes (232) can be spaced apart along an arc trajectory based on the floodlight housing bracket center nut hole (231). Each floodlight housing bracket angle nut hole (232) can be selectively aligned with the floodlight housing side cover angle hole (224) to provide a position where an angle fixing bolt and nut can be fastened. By fastening a fixing bolt through the floodlight housing bracket angle nut hole (232) corresponding to the desired illumination angle, the user can precisely set the illumination direction of the LED fixture and securely fix it.

[0136] FIG. 12 is a perspective view of a floodlight housing module mounting part (240).

[0137] Referring to FIG. 12, a plurality of light source modules (100) can each be mounted on a light source housing module mounting plate (241) formed in a plurality of light source housing module mounting portions (240). The plurality of module mounting portions (240) can be arranged at different heights to form a stepped structure. This stepped structure can suppress the effect of heat generated and rising from the light source module (100) located at the bottom on the heat dissipation performance of the light source module (100) located at the top. Therefore, heat dissipation interference between adjacent light source modules (100) can be reduced or prevented.

[0138] An air passage may be formed between adjacent light source modules (100) of a floodlight housing (200). The air passage may promote natural convection of air. Heat generated from multiple light source modules (100) may be discharged to the outside by natural convection along the air passage. For example, cold outside air may be introduced through the bottom of the light fixture. The introduced air may absorb heat from each light source module (100). The heated air may rise through the air passage formed along the stepped structure and be discharged to the top of the light fixture.

[0139] The floodlight housing module mounting plate (241) formed in each floodlight housing module mounting part (240) may be an area where an individual light source module (100) is substantially mounted. The floodlight housing module mounting plate (241) may provide a flat surface capable of accommodating one light source module (100). One or more through holes may be formed in the floodlight housing module mounting plate (241) to secure the light source module (100) with a fastening member. The surface of the floodlight housing module mounting plate (241) may be in close contact with the surface of the heat sink (110) of the light source module (100) to increase heat transfer efficiency. Heat generated from the light source module (100) can be rapidly conducted to the module mounting part (240) and released to the outside.

[0140] FIG. 13 is a perspective view of a support bracket (300).

[0141] Referring to FIG. 13, the support bracket (300) can serve to fix the LED light fixture to a support or support. The support bracket (300) can be coupled to the floodlight housing (200). Additionally, the support bracket (300) can provide a function to adjust the illumination angle of the light fixture, allowing light to be concentrated on a specific area.

[0142] The support bracket (300) may be a component exposed to the external environment. Therefore, the support bracket (300) may have durability and corrosion resistance capable of withstanding wind pressure, vibration, moisture, and temperature changes. The structure of the support bracket (300) may be designed to stably support the weight of the lighting fixture and to facilitate installation and maintenance. For example, the support bracket (300) may be stainless steel, galvanized steel, powder-coated aluminum alloy, carbon fiber reinforced polymer (CFRP), titanium alloy, engineering plastic, cast iron, nickel-based superalloy, copper-nickel alloy, magnesium alloy, or composite material. However, the present invention is not limited thereto.

[0143] The support bracket (300) may include a floodlight connection part (310) and a support connection part (320).

[0144] The floodlight connection part (310) may be a part of the support bracket (300). The floodlight connection part (310) may be an area directly connected to the floodlight housing (200). The floodlight connection part (310) may be connected to the floodlight housing side cover (220) through a fastening member such as a bolt or nut to ensure structural stability. A floodlight connection part center hole (311) and a plurality of floodlight connection part angle holes (312) may be formed in the floodlight connection part (310).

[0145] The central hole (311) of the floodlight connection part may be a hole formed in the floodlight connection part (310). The central hole (311) of the floodlight connection part may serve as the rotational center axis of the floodlight housing (200). By connecting a fastening member through the central hole (311) of the floodlight connection part and the central hole (223) of the floodlight housing side cover, the floodlight housing (200) can be supported so as to be rotatable with respect to the support bracket (300).

[0146] A plurality of floodlight connection angle holes (312) may be formed in the floodlight connection part (310). The plurality of floodlight connection angle holes (312) may be arranged in an arc shape around the floodlight connection center hole (311). Each floodlight connection angle hole (312) may be selectively aligned with the floodlight housing side cover angle hole (224) formed in the floodlight housing side cover (220). The user can fix the angle of the floodlight housing (200) by attaching a fastening member to the floodlight connection angle hole (312) corresponding to the desired illumination angle.

[0147] The support connecting part (320) can serve to fix the support bracket (300) to an external structure such as a support. The support connecting part (320) can be designed to correspond to the diameter or shape of the support. A support connecting hole (321), a support angle hole (322), and a support angle limiting hole (323) may be formed in the support connecting part (320).

[0148] The support connection hole (321) may be a hole formed in the support connection part (320). The support connection hole (321) may provide a passage through which a fixing device, such as a U-bolt or band, passes to firmly secure the support bracket (300) to the support. The support connection hole (321) may be formed in the shape of an elongated slot to provide flexibility in the installation position.

[0149] A support angle hole (322) may be formed in the support connection part (320). The support angle hole (322) may be used to adjust and fix the installation angle of the support bracket (300) relative to the support. The fastening member can maintain a desired angle by combining with the support or another member connected to the support through the support angle hole (322).

[0150] The support angle limiting hole (323) may be formed in the support connection part (320). The support angle limiting hole (323) may perform the function of limiting the rotation angle range of the support bracket (300). For example, the support angle limiting hole (323) may be formed as an arc-shaped slot. The movement of the fastening member is restricted by both ends of the slot, thereby preventing excessive angle adjustment.

[0151] FIGS. 14 and 15 are drawings illustrating the flow of external air being drawn in and heated air being discharged in an LED lighting fixture according to the first embodiment.

[0152] Referring to FIGS. 14 and 15, a heat dissipation mechanism of an LED lighting fixture according to a first embodiment can be described. The LED lighting fixture may include a plurality of light source modules (100). The LED lighting fixture may include a floodlight housing (200). The LED lighting fixture may include a support bracket (300). The floodlight housing (200) may have a plurality of floodlight housing module mounting parts (240). The plurality of floodlight housing module mounting parts (240) may be arranged at different heights to form a stepped structure. The plurality of light source modules (100) may each be mounted on the plurality of module mounting parts (240). The support bracket (300) may be coupled to the floodlight housing (200). The floodlight housing (200) may be installed on a support through the support bracket (300). An air passage may be formed between adjacent light source modules (100) of the floodlight housing (200). Heat generated from a plurality of light source modules (100) may be discharged to the outside by natural convection along the air passage. Through this configuration, heat dissipation interference between adjacent light source modules (100) can be reduced or prevented.

[0153] Regarding the floodlight housing (200), details that overlap with those described in previous drawings may be omitted. A plurality of floodlight housing side cover ventilation holes (222) may be formed on the side of the floodlight housing (200). The plurality of floodlight housing side cover ventilation holes (222) can serve as intake ports for external air. The floodlight housing side cover ventilation holes (222) can correspond one-to-one with each of the different heights of the plurality of light source modules (100). Accordingly, the floodlight housing side cover ventilation holes (222) may be formed in a multi-stage arrangement along the vertical direction. External air can be introduced through each of the multi-stage arranged floodlight housing side cover ventilation holes (222). The introduced external air can be individually supplied to the rear of the light source module (100) located at the corresponding height. This structure can supply external air to all light source modules (100).

[0154] The air passage may include a plurality of intake spaces formed corresponding to each step height of the stepped structure. Through the plurality of intake spaces, air from outside the light fixture can be individually introduced to the rear of each light source module (100). The introduced external air can absorb heat while in contact with the heat sink (110) of the light source module (100). The temperature of the air that has absorbed heat can rise. The air with the increased temperature has a lower density and can naturally rise. The air can move upward by passing through the step gap between adjacent light source modules (100). The step gap and internal space formed by the stepped structure of the floodlight housing (200) can provide an upward path for the heated air. The air heated in the lower light source module (100) can rise along a separate path. Therefore, the heated air may not directly affect the upper light source module (100). This minimizes heat dissipation interference between modules. The air that has moved upward can be discharged to the outside through the top opening. The uppermost opening may be a floodlight housing light cover ventilation hole (211) provided in the floodlight housing light cover (210). The floodlight housing light cover ventilation hole (211) and the floodlight housing side cover ventilation hole (222) may be connected to an air passage. Thus, a heat dissipation path may be provided so that cold outside air is introduced and heated inside air is discharged.

[0155] Regarding the support bracket (300), details that overlap with those described in FIG. 13 may be omitted. The support bracket (300) can fix the floodlight housing (200) at a desired angle. This allows it to perform the function of supporting it to illuminate a specific area. Regardless of the installation angle of the LED light fixture, the stepped structure of the floodlight housing (200) can induce an upward airflow in the vertical direction. Therefore, regardless of the angle at which the LED light fixture is installed by the support bracket (300), the heat dissipation performance based on natural convection described above can be consistently maintained.

[0156] FIG. 16 is a diagram illustrating the state in which the angle of an LED lighting fixture according to the first embodiment is adjusted.

[0157] Referring to FIG. 16, details regarding the support bracket (300) that overlap with those described in FIG. 13 may be omitted. The support bracket (300) can serve the function of connecting the floodlight housing (200) to a support structure such as a support. Additionally, the support bracket (300) can provide a function to adjust the installation angle of the floodlight housing (200), allowing the user to set the direction of light illumination as desired. This angle adjustment function can contribute to expanding the range of applications for LED lighting fixtures and satisfying specific lighting requirements.

[0158] The support bracket (300) may include a floodlight connection part (310) and a support connection part (320). A floodlight connection part center hole (311) and a plurality of floodlight connection part angle holes (312) may be formed in the floodlight connection part (310). A support connection hole (321), a support angle hole (322), and a support angle limiting hole (323) may be formed in the support connection part (320).

[0159] The support bracket (300) can be rotatably coupled to the floodlight housing (200). For example, a fastening member can be selectively coupled through a plurality of floodlight connection angle holes (312) formed in the floodlight connection part (310) of the support bracket (300) and a floodlight housing side cover angle hole (224) formed on the side of the floodlight housing (200). Figures 16 (a) and (b) respectively illustrate states in which the illumination angles of the LED light fixture are set differently through this structure, and through this, the user can precisely control the light distribution according to the area requiring lighting.

[0160] In one embodiment of the present invention, the angle adjustment part of the support bracket (300) may be configured to enable more precise and stable angle fixing by applying a combination of a gear and a worm gear or a ratchet mechanism, in addition to a manual fixing method. Furthermore, the support bracket (300) may be equipped with an angle indicator scale on the inside or outside. Such an angle indicator scale can facilitate accurate angle setting during installation. In addition, the angle indicator scale helps ensure consistency in the work when installing multiple light fixtures at the same angle.

[0161] Regarding the floodlight housing (200), details that overlap with those described in FIGS. 1 to 15 may be omitted. The floodlight housing (200) may be supported by a support bracket (300). The floodlight housing (200) may rotate on the support bracket (300) to change the illumination angle. Even if the angle of the floodlight housing (200) is adjusted, the air passage formed inside can smoothly maintain the inflow of external air and the discharge of heated air. As a result, the LED light fixture can exhibit efficient natural convection cooling performance regardless of the installation angle.

[0162] Regarding the light source module (100), details that overlap with those described in FIGS. 1 to 15 may be omitted. A plurality of light source modules (100) may be arranged along the stepped structure of the floodlight housing (200). As the angle of the floodlight housing (200) changes, the overall direction of illumination of the light emitted by the plurality of light source modules (100) may change together. Through this, light distribution optimized for various lighting targets, such as roads, plazas, sports facilities, or building exterior walls, can be implemented.

[0163] FIG. 17 is an installation diagram of an LED lighting fixture according to the first embodiment.

[0164] Referring to FIG. 17, the installation state of an LED lighting fixture according to the present invention can be illustrated. The LED lighting fixture may be configured to include a plurality of light source modules (100), a floodlight housing (200), and a support bracket (300). The LED lighting fixture can be used in an outdoor environment by being firmly fixed to a support such as a post through the support bracket (300).

[0165] Regarding the light source module (100), details that overlap with those described in FIGS. 1 to 15 are omitted. Multiple light source modules (100) may be arranged at different heights according to the stepped structure of the floodlight housing (200). This arrangement can contribute to optimizing heat dissipation performance while allowing each light source module (100) to irradiate light independently.

[0166] Regarding the floodlight housing (200), details that overlap with those described in FIGS. 1 to 15 are omitted. The floodlight housing (200) may be provided with a plurality of floodlight housing module mounting parts (240). The plurality of floodlight housing module mounting parts (240) may be arranged at different heights to form a stepped structure. A plurality of light source modules (100) may be mounted and supported on each floodlight housing module mounting part (240). Additionally, the floodlight housing (200) may protect the plurality of light source modules (100) from external impact. An air passage may be formed between adjacent light source modules (100) of the floodlight housing (200). Heat generated from the plurality of light source modules (100) may be discharged to the outside by natural convection along the air passage. Accordingly, heat dissipation interference between adjacent light source modules (100) may be reduced or prevented.

[0167] Regarding the support bracket (300), details that overlap with those described in FIG. 1 and FIG. 15 are omitted. The support bracket (300) can be coupled to the floodlight housing (200). The support bracket (300) can enable the floodlight housing (200) to be installed on the support. Additionally, through the angle adjustment function of the support bracket (300), the illumination direction of the light source module (100) can be precisely set to match the requirements of the lighting area even after installation.

[0168] In one embodiment of the present invention, the LED lighting fixture may be mounted on a vertically erected support as illustrated. However, the installation environment of the LED lighting fixture may not be limited thereto. For example, the support may be the exterior wall of a building, a lighting tower of a sports stadium, a bridge structure, a tunnel ceiling, a support for an advertising board, a port facility, an airport runway, an industrial plant, a military facility, a large parking lot, a construction site, etc. However, the present invention is not limited thereto.

[0169] FIG. 18 is a perspective view of an LED lighting fixture in which a light source module (100), a street light housing (400), and a support mounting bracket (500) are combined according to a second embodiment.

[0170] Referring to FIG. 18, the LED lighting fixture may include a street light housing (400) and a pole mounting bracket (500) according to a second embodiment. The street light housing (400) may accommodate a plurality of light source modules (100) inside. The street light housing (400) may perform the role of protecting the plurality of light source modules (100) from the external environment. Additionally, the street light housing (400) may function as a main heat dissipator that effectively releases heat generated during the operation of the light source modules (100).

[0171] A street light housing (400) may include a plurality of street light housing side cover module mounting plates (421). The plurality of street light housing side cover module mounting plates (421) may form a stepped structure arranged in a stepped form at different heights. A plurality of light source modules (100) may be mounted on each of the plurality of street light housing side cover module mounting plates (421). This stepped structure allows each light source module (100) to be independently positioned at a vertically separated location on each step section. As a result, hot air rising from the light source module (100) located at the bottom can be suppressed from causing direct interference with the heat dissipation performance of the light source module (100) located at the top. Accordingly, heat dissipation interference between light source modules (100) can be reduced or prevented.

[0172] The stepped structure of the street light housing (400) can form an air passage for natural convection between adjacent light source modules (100). Cold outside air can be drawn into the lower part of the light fixture. The drawn-in air can be heated by absorbing heat from each light source module (100). The heated air can move upward along the formed air passage and be discharged to the outside. Heat generated from the light source modules (100) can be discharged to the outside through the air passage. This structure can maximize heat dissipation efficiency solely through natural convection without a separate cooling fan. This can improve the reliability and lifespan of the light fixture.

[0173] In one embodiment of the present invention, the street light housing (400) may be formed from a material with excellent thermal conductivity. For example, the street light housing (400) may be aluminum, aluminum alloy, copper, copper alloy, magnesium, magnesium alloy, thermally conductive plastic, carbon composite, graphene-coated metal, alumina ceramic, or aluminum nitride ceramic. However, the present invention is not limited thereto. The material of the street light housing (400) may be selected by comprehensively considering heat dissipation performance, structural strength, corrosion resistance, and manufacturing cost.

[0174] In one embodiment of the present invention, the street light housing (400) may be formed of aluminum or an aluminum alloy. Aluminum or an aluminum alloy may have excellent thermal conductivity and may be lightweight while ensuring sufficient mechanical strength.

[0175] The support mounting bracket (500) can serve to secure the street light housing (400) to a support structure such as a street light pole. The support mounting bracket (500) can be firmly attached to one side of the street light housing (400). Through this, the support mounting bracket (500) can support the weight of the entire light fixture. The connection between the support mounting bracket (500) and the street light housing (400) can be achieved through mechanical joining methods such as bolt fastening, welding, or integral casting.

[0176] The support mounting bracket (500) may include a function for adjusting the installation angle of the street light housing (400). This allows the illumination angle of the light to be changed up and down or left and right. As a result, specific lighting requirements can be satisfied. For example, the angle of the street light housing (400) can be finely adjusted to achieve optimal light distribution depending on the width of the road, the number of lanes, or the location of the pedestrian walkway.

[0177] FIG. 19 is a perspective view showing an LED lighting fixture according to a second embodiment from a different direction.

[0178] Referring to FIG. 19 together with FIG. 18, a second embodiment of the LED lighting fixture may include a street light housing (400) and a support mounting bracket (500).

[0179] The street light housing (400) can perform the function of protecting multiple light source modules (100) from the external environment by mounting them inside. The street light housing (400) can serve as a primary heat dissipator that releases heat generated from the light source modules (100) to the outside. Additionally, the street light housing (400) can protect internal components from external physical impact, moisture, or foreign substances.

[0180] The street light housing (400) may include a plurality of street light housing side cover module mounting plates (421). The plurality of street light housing side cover module mounting plates (421) may be arranged at different heights so that a plurality of light source modules (100) are each mounted. Due to this arrangement, the street light housing (400) may form a stepped structure. Due to the stepped structure of the street light housing (400), an air passage for natural convection may be formed between adjacent light source modules (100). Heat generated from the light source modules (100) may be discharged to the outside through the air passage. Through this, heat dissipation interference between the light source modules (100) may be reduced or prevented.

[0181] In one embodiment of the present invention, the street light housing (400) may be made of a material with excellent thermal conductivity. The surface of the street light housing (400) may be anodized or coated with a heat dissipation paint to maximize heat dissipation efficiency.

[0182] The support mounting bracket (500) can serve to secure the street light housing (400) to a support structure such as a support or pole. The support mounting bracket (500) can support the street light housing (400) so that it is installed at a specific angle. This allows the illumination angle of the LED fixture to be adjusted to optimize the lighting area.

[0183] The support mounting bracket (500) can be rotatably coupled to one side of the street light housing (400). By adjusting and fixing the relative angle between the support mounting bracket (500) and the street light housing (400), the direction of light illumination can be precisely set to suit road conditions or installation environments. This angle adjustment function can contribute to securing uniform illumination and reducing light pollution.

[0184] In one embodiment of the present invention, the support mounting member (500) may be formed of a material having high mechanical strength and weather resistance. For example, the support mounting member (500) may be stainless steel, cast aluminum, galvanized steel, engineering plastic, fiber reinforced polymer (FRP), carbon fiber composite, titanium alloy, forged steel, high-strength steel, extruded aluminum profile, or spheroidal graphite cast iron. However, the present invention is not limited thereto. The support mounting member (500) may provide a path through the internal space for a power line to be introduced into the street light housing (400).

[0185] FIG. 20 is an exploded perspective view of an LED lighting fixture according to a second embodiment.

[0186] Referring to FIG. 20 together with FIG. 18 and 19, an LED lighting fixture according to a second embodiment of the present invention may include a plurality of light source modules (100), a street light housing (400), and a pole mounting bracket (500). The street light housing (400) may be configured to include a street light housing light cover (410), a street light housing side cover (420), and a street light housing pole mounting bracket (430). FIG. 20 illustrates the components in a disassembled state so that the shape and connection relationship of each part can be clearly shown.

[0187] The support mounting bracket (500) can serve to secure the assembled street light housing (400) to an external support such as a street light pole. The support mounting bracket (500) can be connected to the street light housing support mounting bracket (430) through a fastening member such as a bolt. The LED light fixture can be stably installed so as to face a road, sidewalk, or other area requiring lighting.

[0188] In one embodiment of the present invention, the support mounting member (500) may include a housing fastening part (510) coupled to a street light housing (400), an angle adjustment part (520) for adjusting the installation angle of the street light housing (400), and a support mounting part (530) coupled to a support. The angle adjustment part (520) may provide a function for finely adjusting the illumination angle of the LED light fixture up and down or left and right. Through the angle adjustment function, light distribution can be optimized to meet the requirements of a specific lighting environment.

[0189] The street light housing support mounting bracket (430) can be mounted on the upper surface of the street light housing light cover (410). The street light housing support mounting bracket (430) can serve to connect the support mounting bracket (500) and the street light housing (400). A street light housing support mounting hole (431) for connection with the support mounting bracket (500) may be formed in the street light housing support mounting bracket (430).

[0190] The street light housing (400) can accommodate and protect multiple light source modules (100). Additionally, the street light housing (400) may be a structure that effectively dissipates heat generated from the light source modules (100). The street light housing (400) may be made of a material with high thermal conductivity to maximize heat dissipation performance.

[0191] The street light housing (400) may form a stepped structure by including a plurality of street light housing side cover module mounting plates (421) arranged at different heights so that a plurality of light source modules (100) are each mounted. Due to the stepped structure of the street light housing (400), an air passage for natural convection may be formed between adjacent light source modules (100). Heat generated from the light source modules (100) can be discharged to the outside through the air passage. Accordingly, heat rising from the lower light source module (100) can be suppressed from directly interfering with the heat dissipation of the upper light source module (100). As a result, heat dissipation interference between the light source modules (100) can be reduced or prevented.

[0192] The street light housing light cover (410) can form the upper and central parts of the street light housing (400). Additionally, the street light housing light cover (410) can form the base of a stepped structure. A plurality of street light housing light cover ventilation holes (411) to promote air circulation may be formed on the surface of the street light housing light cover (410). Furthermore, a street light housing wire hole (412) through which a wire passes may be formed in the street light housing light cover (410).

[0193] The street light housing side covers (420) can be attached to each side of the street light housing light cover (410). A pair of street light housing side covers (420) can form an internal space of the street light housing (400). This allows the light source module (100) and internal circuitry to be protected from the external environment. A plurality of street light housing side cover ventilation holes (422) can be formed in the street light housing side covers (420). The street light housing side cover ventilation holes (422) can function as passages for cold air from the outside to enter.

[0194] Regarding the light source module (100), details that overlap with those described in FIGS. 1 to 7 may be omitted. A plurality of light source modules (100) may be independently mounted on the street light housing side cover module mounting plate (421) corresponding to each step portion of the street light housing side cover (420). Each light source module (100) may include a high-efficiency LED element to generate light. Heat generated during operation may be transferred to the street light housing (400) through a heat sink.

[0195] FIG. 21 is a perspective view of a street light housing light cover (410).

[0196] Referring to FIG. 21, a street light housing light cover (410) may be illustrated. The street light housing light cover (410) may be a component that covers the upper part of the street light housing (400). The street light housing light cover (410) may include a plurality of street light housing light cover ventilation holes (411) and street light housing wire holes (412).

[0197] The street light housing light cover (410) can serve to protect the internal components of the street light housing (400) from the external environment. The street light housing light cover (410) can prevent the ingress of rainwater, dust, foreign substances, etc., thereby ensuring stable operation of the internal light source module (100) or power supply unit. In addition, the street light housing light cover (410) can be combined with the street light housing side cover (420) to secure the overall structural rigidity of the street light housing (400).

[0198] The ventilation hole (422) on the side cover of the street light housing can function as a passage for cold outside air to flow into the street light housing (400). Through this, the cooling efficiency can be increased by promoting natural convection along with the discharge of hot air from the inside through the ventilation hole (411) on the light cover of the street light housing.

[0199] The street light housing light cover (410) can play a key role in the heat dissipation system of the LED light fixture. The street light housing light cover (410) can provide a main path for internal air heated by heat generated from the light source module (100) to be discharged to the outside. Through this, the street light housing light cover (410) can suppress the temperature rise inside the street light housing (400) and maximize cooling efficiency through natural convection.

[0200] In one embodiment of the present invention, the street light housing cover (410) may be formed from a material with excellent thermal conductivity. For example, the street light housing cover (410) may be made of aluminum, copper, magnesium alloy, stainless steel, carbon steel, galvanized steel, graphene composite, ceramic, thermally conductive polymer, carbon nanotube composite, or aluminum die casting material. However, the present invention is not limited thereto. Additionally, the surface of the street light housing cover (410) may be subjected to anodizing treatment, powder coating, or heat dissipation paint coating to improve corrosion resistance and heat dissipation performance.

[0201] The street light housing light cover ventilation holes (411) can be formed in multiple numbers on the upper surface and side of the street light housing light cover (410). The street light housing light cover ventilation holes (411) can function as a passage for heated air to be discharged. When heat generated from the light source module (100) heats the air, the hot air with reduced density rises and can escape to the outside through the street light housing light cover ventilation holes (411).

[0202] The air exhaust area can be maximized by arranging the ventilation holes (411) of the street light housing cover in multiple numbers. The number, size, and arrangement of the ventilation holes (411) of the street light housing cover can be optimized according to the total heat generation of the LED fixture and the required cooling performance. In one embodiment of the present invention, an insect screen or filter may be additionally installed inside the ventilation holes (411) of the street light housing cover to prevent the entry of insects or foreign substances.

[0203] A street light housing wire hole (412) may be formed on one side of the street light housing light cover (410). The street light housing wire hole (412) may provide a path for a wire to pass through, connecting an external power source and a power supply unit inside the LED fixture. The street light housing wire hole (412) may enable the safe insertion and securing of the wire.

[0204] In one embodiment of the present invention, a cable gland or a rubber grommet may be attached to the street light housing wire hole (412) to ensure waterproof and dustproof performance. Such sealing members can effectively prevent moisture or dust from penetrating into the street light housing (400) through the street light housing wire hole (412). The location of the street light housing wire hole (412) may be designed considering the convenience of wiring work.

[0205] FIG. 22 is a perspective view of a street light housing side cover (420).

[0206] Referring to FIG. 22, the street light housing side cover (420) may be a component forming the side structure of the street light housing (400). The street light housing side cover (420) may provide a space in which a plurality of light source modules (100) can be mounted. The street light housing side cover (420) may include a street light housing side cover module mounting plate (421) and a street light housing side cover ventilation hole (422).

[0207] The street light housing side cover module mounting plate (421) may be a flat area where the light source module (100) is physically fixed. Multiple street light housing side cover module mounting plates (421) may be arranged in a stepped form at different heights. Due to this stepped structure of the street light housing (400), an air passage for natural convection may be formed between adjacent light source modules (100). Heat generated from the light source modules (100) may be discharged to the outside through the formed air passage. Through this configuration, heat dissipation interference between light source modules (100) may be reduced or prevented.

[0208] The ventilation holes (422) in the side cover of the street light housing may be a plurality of openings formed on the vertical surface of the side cover (420) of the street light housing. The ventilation holes (422) in the side cover of the street light housing may serve as a passage for cold outside air to flow into the street light housing (400). The ventilation holes (422) in the side cover of the street light housing may provide a path for internal air heated by the light source module (100) to be discharged to the outside.

[0209] The ventilation hole (422) on the side cover of the street light housing can form an air passage in conjunction with the ventilation hole (411) on the light cover of the street light housing. External air can be introduced through the ventilation hole (422) on the side cover of the street light housing to cool the heat sink (110) of each light source module (100). The air that has absorbed heat can rise as its density decreases. The rising air can be discharged to the outside through the ventilation hole (411) on the light cover of the street light housing located at the top. Through this, an effective natural convection cooling system can be implemented.

[0210] In one embodiment of the present invention, the shape, size, and number of ventilation holes (422) in the side cover of the street light housing can be adjusted according to the overall heat dissipation performance requirements of the LED lighting fixture. For example, the ventilation holes (422) in the side cover of the street light housing may be in the shape of an elongated slot, a circular hole, a square opening, a hexagonal honeycomb structure, an elliptical hole, a triangular hole, a rhombus, a star shape, a curved slit, a grid pattern, or an irregular geometric shape. However, the present invention is not limited thereto. Through such design modifications, air flow characteristics optimized for specific environmental conditions or heat generation can be secured.

[0211] FIG. 23 is a perspective view of a street light support mounting bracket (430).

[0212] Referring to FIG. 23, a street light housing support mounting bracket (430) may be provided in the street light housing (400). The street light housing support mounting bracket (430) may serve as a medium for connecting with the support mounting bracket (500). Through this, the entire street light housing (400) can be stably fixed to the support.

[0213] The street light housing support mounting member (430) may have a semi-cylindrical body portion that contacts the support mounting member (500). The street light housing support mounting member (430) may include flanges that extend to both sides of the body portion and are fixed to the street light housing (400). Additionally, the street light housing support mounting member (430) may include a street light housing support mounting hole (431).

[0214] The street light housing support mounting hole (431) can be installed by inserting the support mounting bracket (500).

[0215] In one embodiment of the present invention, the street light housing support mounting member (430) may be formed from a material having high strength and corrosion resistance. For example, the street light housing support mounting member (430) may be made of aluminum, aluminum alloy, stainless steel, galvanized steel, powder-coated steel, engineering plastic, carbon fiber reinforced polymer, glass fiber reinforced plastic, titanium, copper alloy, or magnesium alloy. However, the present invention is not limited thereto.

[0216] The surface of the street light housing support mounting bracket (430) can be powder coated or anodized to further improve durability in an outdoor environment.

[0217] FIG. 24 is a perspective view of a support mounting device (500).

[0218] Referring to FIG. 24, the support mounting member (500) can serve to fix the street light housing (400) to a support such as a support post. The support mounting member (500) can ensure stable installation of the LED light fixture. Additionally, the support mounting member (500) can provide a function to adjust the illumination direction of the LED light fixture. The support mounting member (500) may include a housing fastening part (510), an angle adjustment part (520), and a support mounting part (530).

[0219] The housing fastening part (510) can be directly coupled to the street light housing (400) as part of the support post mounting part (500). The housing fastening part (510) can be inserted into the street light housing support post mounting part (430) formed in the street light housing (400). The housing fastening part (510) can be fastened to the street light housing support post mounting part (430). The housing fastening part (510) can be firmly fixed to the street light housing (400) through a fastening member such as a bolt or screw. A housing fastening part wire hole (511) can be formed inside the housing fastening part (510). The housing fastening part wire hole (511) can safely guide the wire introduced from the support post into the street light housing (400). The housing fastening part wire hole (511) can protect the wire from the external environment. The housing fastening part wire hole (511) can facilitate wiring work.

[0220] In one embodiment of the present invention, the housing fastening portion (510) may be formed of a material having excellent corrosion resistance and weather resistance. For example, the housing fastening portion (510) may be aluminum, aluminum alloy, stainless steel, galvanized steel, powder-coated steel, engineering plastic, carbon fiber reinforced polymer, glass fiber reinforced plastic, titanium, copper alloy, or magnesium alloy. However, the present invention is not limited thereto. A sealing structure may be additionally provided on the surface of the housing fastening portion (510). The sealing structure may improve waterproof and dustproof performance.

[0221] The angle adjustment unit (520) may be located at the part connecting the housing fastening unit (510) and the support mounting unit (530). The angle adjustment unit (520) may have a pivot structure. The user can adjust the installation angle of the street light housing (400) in the desired direction using the pivot structure. The angle adjustment unit (520) can enable precise setting of the lighting area. Precise setting of the lighting area can reduce light pollution. In addition, precise setting of the lighting area can maximize lighting efficiency. The angle adjustment unit (520) can adjust the angle by loosening and tightening the fixing bolt. In addition, the angle adjustment unit (520) can fix the adjusted angle. A toothed gear structure or a surface treatment that increases frictional force may be applied to the coupling surface of the angle adjustment unit (520). The toothed gear structure or the surface treatment that increases frictional force can provide stable fixing force. Stable fixing force can prevent the set angle from changing due to external factors such as wind or vibration.

[0222] In one embodiment of the present invention, an angle scale may be marked on the outer surface of the angle adjustment part (520). The angle scale can help the installer accurately adjust the angle to the desired angle. The angle scale can improve consistency and convenience of work when installing multiple light fixtures at the same angle.

[0223] The support mounting portion (530) may be a part where the support mounting member (500) is directly connected to a street light support or pole. The support mounting portion (530) may have a cylindrical shape. The support mounting portion (530) may be inserted into a standard street light support or fastened by a clamp. A plurality of fixing screws or bolts may be arranged on the outer surface of the support mounting portion (530). The fixing screws or bolts can firmly secure the support mounting portion (530) inside the support. The firm fixing of the support mounting portion (530) can stably support the load of the entire LED light fixture. In addition, the firm fixing of the support mounting portion (530) can ensure resistance to external impact.

[0224] In one embodiment of the present invention, the post mounting portion (530) may additionally include an adapter or a shim. The adapter or shim may enable the post mounting portion (530) to correspond to posts having different diameters. The post mounting portion (530) may have an internal space through which a wire can pass. The post mounting portion (530) may be made of a durable metal material. The post mounting portion (530) may withstand a long-term outdoor usage environment.

[0225] FIGS. 25 and 26 are drawings illustrating the flow of heated air flowing out to the outside as external air is introduced into an LED lighting fixture according to a second embodiment.

[0226] Referring to FIGS. 25 and 26, a heat dissipation process in which external air is introduced and heated air is discharged can be illustrated in an LED light fixture according to the second embodiment. Cold external air may be introduced through the sides and bottom of the street light housing (400). The introduced air may absorb heat generated from a plurality of light source modules (100) and move upward. This heated air may be discharged to the outside through the top of the street light housing (400).

[0227] Regarding the street light housing (400), details that overlap with those described in FIGS. 18 to 24 may be omitted. The street light housing (400) can accommodate a plurality of light source modules (100) internally and perform the function of protecting them from the external environment. Additionally, the street light housing (400) can provide a heat dissipation structure to release heat generated from the light source modules (100). The street light housing (400) may include a plurality of street light housing side cover module mounting plates (421) arranged at different heights so that a plurality of light source modules (100) are each mounted. These plurality of street light housing side cover module mounting plates (421) may form a stepped structure. In one embodiment of the present invention, the street light housing (400) may include a street light housing light cover (410) and a street light housing side cover (420).

[0228] The stepped structure of the street light housing (400) can form an air passage for natural convection between adjacent light source modules (100). Relatively cold outside air can be introduced into the light fixture through a plurality of street light housing side cover ventilation holes (422) formed in the street light housing side cover (420). A plurality of light source modules (100) can be independently arranged in each stepped section.

[0229] The incoming air can absorb heat while in contact with the heat sink (110) of the light source module (100). The air that has absorbed heat rises in temperature and becomes less dense, allowing it to move upward due to buoyancy. The gap between adjacent light source modules (100) can serve as an upward path for the air. Therefore, the direct interference of heat rising from the lower light source module (100) with the heat dissipation of the upper light source module (100) can be suppressed. As a result, heat dissipation interference between the light source modules (100) can be reduced or prevented.

[0230] The rising air can reach the top of the street light housing (400). The heated air can finally be discharged to the outside through a plurality of street light housing light cover ventilation holes (411) formed in the street light housing light cover (410). Heat generated from the light source module (100) can be discharged to the outside through these air passages. Natural convection cooling can be achieved as the processes of cold air inflow, heat absorption, rising of heated air, and discharge occur continuously. This heat dissipation path can stably maintain the temperature of the light fixture without a separate forced cooling device such as a fan.

[0231] The air passage may include a plurality of intake spaces formed corresponding to each step height of the stepped structure. Through the plurality of intake spaces, air from outside the light fixture may be individually introduced into each light source module (100). After absorbing heat, the external air may move upward through the gap between adjacent light source modules (100). The air that has moved upward may form a flow path to be discharged to the outside through the top opening. In one embodiment of the present invention, the ventilation hole (411) of the street light housing light cover may function as the top opening.

[0232] Regarding the support mounting bracket (500), details that overlap with those described in FIGS. 18 to 24 may be omitted. The support mounting bracket (500) can be coupled to the street light housing (400). The support mounting bracket (500) can enable the street light housing (400) to be installed on the support. The support mounting bracket (500) can stably fix the street light housing (400). Through this, the light fixture can be supported so that it does not shake even due to external factors such as wind or vibration. In addition, the support mounting bracket (500) can adjust the installation angle of the light fixture to illuminate a desired area.

[0233] FIG. 27 is a diagram illustrating the state in which the angle of an LED lighting fixture according to the second embodiment is adjusted.

[0234] Referring to FIG. 27, the support mounting member (500) can perform the function of adjusting the installation angle of the street light housing (400). The support mounting member (500) can stably fix the street light housing (400) to an external structure such as a support. In addition, the support mounting member (500) can provide mechanical flexibility so that the street light housing (400) can be set to a desired illumination direction.

[0235] Regarding the support post mounting member (500), details that overlap with those described in FIGS. 18 to 24 may be omitted. The support post mounting member (500) may include a housing fastening part (510) coupled to the street light housing (400), an angle adjustment part (520) for adjusting the installation angle of the street light housing (400), and a support post mounting part (530) coupled to the support post. The angle adjustment part (520) may allow the street light housing (400) to rotate around a specific axis. The angle adjustment part (520) may enable fine adjustment of the illumination angle of the light source module (100). FIG. 27 (a) may illustrate a state in which the street light housing (400) has one set angle. FIG. 27 (b) may illustrate a state in which the street light housing (400) has another set angle to demonstrate the angle adjustment function.

[0236] Regarding the street light housing (400), details that overlap with those described in FIGS. 18 to 24 may be omitted. The street light housing (400) can be equipped with a plurality of light source modules (100) and perform the role of protecting them from the external environment. The overall tilt of the street light housing (400) can be adjusted in conjunction with the angle adjustment part (520) of the support mounting part (500). Through this, the illumination direction of all light source modules (100) placed inside the street light housing (400) can be changed collectively.

[0237] Regarding the light source module (100), details that overlap with those described in FIGS. 4 to 7 may be omitted. The light source module (100) may be placed at different heights according to the stepped structure of the street light housing (400). When the angle of the street light housing (400) is adjusted, the area illuminated by each light source module (100) may also move together. This function can be usefully employed when light needs to be concentrated on a specific lane of a road, a sidewalk, or a specific area.

[0238] In one embodiment of the present invention, the angle adjustment unit (520) may be implemented to enable more precise and stable angle fixation by including a gear mechanism or a ratchet structure. Additionally, the angle adjustment unit (520) may be configured to have a scale marking so that the user can visually confirm and reproduce the desired angle. Through this configuration, the convenience of installation and maintenance of the LED lighting fixture can be improved.

[0239] FIG. 28 is an installation diagram of an LED lighting fixture according to the second embodiment.

[0240] Referring to FIG. 28, an installation state diagram of an LED lighting fixture according to a second embodiment may be shown.

[0241] Regarding the street light housing (400), details that overlap with those described in FIGS. 18 to 27 are omitted. The street light housing (400) may include a plurality of light source modules (100) inside. The street light housing (400) may have a stepped structure. The street light housing (400) may include a plurality of street light housing side cover module mounting plates (421). The plurality of street light housing side cover module mounting plates (421) may be arranged at different heights so that a plurality of light source modules (100) are each mounted. The stepped structure of the street light housing (400) may form an air passage for natural convection between adjacent light source modules (100). Heat generated from the light source modules (100) can be discharged to the outside through the air passage. Through this, heat dissipation interference between the light source modules (100) can be reduced or prevented. The street light housing (400) is installed on a pole by means of a pole mounting bracket (500) and can perform the function of illuminating a specific area such as a road or sidewalk.

[0242] Regarding the support post mounting bracket (500), details that overlap with those described in FIGS. 18 to 27 are omitted. The support post mounting bracket (500) can serve to stably fix the street light housing (400) to the support post. The support post mounting bracket (500) can optimize the lighting area by providing a function to adjust the installation angle of the street light housing (400).

[0243] The LED light fixture can be attached to the end of the street light pole via a pole mounting bracket (500). The street light housing (400) can be installed at a certain distance from the pole. Through this, light can be irradiated to the lower part of the street light housing (400) to form a desired lighting area.

[0244] In one embodiment of the present invention, the support may be made of concrete, steel, aluminum, or composite material. The support mounting member (500) may include an adjustable fastening structure to accommodate supports having various diameters and shapes. For example, the support mounting member (500) may be fixed to the support using a band, a clamp, or a plurality of bolts.

[0245] A plurality of ventilation holes (211, 222, 411, 422) for the inflow of outside air and the discharge of internal heated air may be formed in the side cover and / or top cover of the floodlight housing (200) or streetlight housing (400).

[0246] The above ventilation holes may be formed to correspond to the height at which each light source module (100) is positioned, and accordingly, external air that is relatively low temperature may be introduced through the lower or side ventilation holes, heated around the light source module (100) and the heat sink (110), and then discharged through the upper ventilation holes or the top opening.

[0247] Independent natural convection paths can be formed around each light source module (100) by such airflow.

[0248] Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical concept or essential features of the invention. Accordingly, the embodiments described above are illustrative in all respects and are not restrictive. Explanation of the symbols

[0249] 100: Light source module 110: Heat sink 111: Heat sink protrusion 112: Heat sink hole 120: Evangelism Tape 130: Substrate 131: Circuit board LED 132: Substrate hole 140: Silicone gasket 141: Silicone gasket protrusion 150: Module Cover 151: Module cover groove 152: Module cover diffuser 200: Floodlight Housing 210: Floodlight housing cover 211: Floodlight housing light cover ventilation hole 212: Floodlight housing light cover wire hole 220: Floodlight housing side cover 221: Floodlight housing side cover module mounting plate 222: Floodlight housing side cover ventilation hole 223: Floodlight housing side cover center hole 224: Floodlight housing side cover angle hole 230: Floodlight housing bracket 231: Floodlight housing bracket center nut hole 232: Floodlight housing bracket angle nut hole 240: Floodlight housing module mounting section 241: Floodlight Housing Module Mounting Plate 250: Floodlight housing upper cover 300: Support bracket 310: Floodlight connection 311: Center hole of floodlight connection 312: Floodlight connection angle hole 320: Post connection 321: Support connection hole 322: Support angle hole 323: Post angle limiting hole 400: Streetlight housing 410: Streetlight housing cover 411: Streetlight housing light cover ventilation hole 412: Streetlight housing wire hole 420: Streetlight housing side cover 421: Streetlight housing side cover module mounting plate 422: Streetlight housing side cover ventilation hole 430: Streetlight housing support mounting bracket 431: Streetlight housing support mounting hole 500: Support mounting bracket 510: Housing fastening part 511: Housing connection wire hole 520: Angle adjustment unit 530: Post mounting part

Claims

Claim 1 An LED lighting fixture comprising: a plurality of light source modules; a plurality of light source housing module mounting portions arranged at different heights to form a stepped structure so as to mount each of the plurality of light source modules; and a support bracket coupled to the light source housing so as to install the light source housing on a support. In this LED lighting fixture, an air passage is formed between adjacent light source modules of the light source housing, and heat generated from the plurality of light source modules is configured to be discharged to the outside by natural convection along the air passage, thereby reducing or preventing heat dissipation interference between adjacent light source modules. The light source housing, which forms a stepped structure with the plurality of light source housing module mounting portions arranged at different heights, comprises a light source housing light cover; a light source housing side cover; a light source housing bracket; and a light source housing upper cover. A plurality of light source housing light cover ventilation holes are formed in the light source housing light cover, and a plurality of light source housing side cover ventilation holes are formed in the light source housing side cover. Claim 2 An LED lighting fixture comprising: a plurality of light source modules; a street light housing having a stepped structure including a plurality of street light housing side cover module mounting plates arranged at different heights so that each of the plurality of light source modules is mounted; and a pole mounting member coupled to the street light housing so that the street light housing is installed on a pole, wherein an air passage for natural convection is formed between adjacent light source modules by the stepped structure of the street light housing, and heat generated from the light source modules is configured to be discharged to the outside through the air passage, thereby reducing or preventing heat dissipation interference between the light source modules, wherein the street light housing includes a street light housing light cover and a street light housing side cover, wherein a plurality of street light housing light cover ventilation holes are formed in the street light housing light cover, a plurality of street light housing side cover ventilation holes are formed in the street light housing side cover, a street light housing wire hole through which a wire passes is formed in the street light housing light cover, a street light housing pole mounting member is provided in the street light housing, and a street light housing pole mounting hole is formed in the street light housing pole mounting member. LED light fixture. Claim 3 An LED lighting fixture according to claim 1 or claim 2, wherein the light source module comprises: a heat sink; a conductive tape disposed to be in contact with the heat sink; a substrate disposed to be in contact with the conductive tape; a silicone gasket disposed on the front side of the substrate; and a module cover coupled with the silicone gasket in between. Claim 4 An LED lighting fixture according to claim 3, characterized in that a plurality of heat sink protrusions are formed on the heat sink to release heat generated from the light source module to the outside. Claim 5 An LED lighting fixture according to claim 3, wherein the silicone gasket includes a silicone gasket protrusion, and the module cover includes a module cover groove into which the silicone gasket protrusion is inserted. Claim 6 An LED lighting fixture according to claim 3, wherein the module cover includes a module cover diffuser for diffusing or irradiating light from a light source to the outside. Claim 7 delete Claim 8 An LED lighting fixture according to claim 1, characterized in that the ventilation hole in the light cover of the floodlight housing and the ventilation hole in the side cover of the floodlight housing are connected to the air passage so that cold air from the outside is introduced and heated air from the inside is discharged. Claim 9 An LED lighting fixture comprising: a plurality of light source modules; a plurality of floodlight housings having a stepped structure formed by arranging a plurality of floodlight housing module mounting portions at different heights so as to mount each of the plurality of light source modules; and a support bracket coupled to the floodlight housing so as to install the floodlight housing on a support. The LED lighting fixture is characterized in that an air passage is formed between adjacent light source modules of the floodlight housing, and heat generated from the plurality of light source modules is discharged to the outside by natural convection along the air passage, thereby reducing or preventing heat dissipation interference between adjacent light source modules. The support bracket includes a floodlight connection portion and a support portion, wherein the floodlight connection portion has a central hole and a plurality of angle holes for the floodlight connection portion formed therein, and the support portion has a support portion connection hole, a support portion angle hole, and a support portion angle limiting hole formed therein. Claim 10 delete Claim 11 delete Claim 12 An LED lighting fixture according to claim 2, wherein the support mounting member comprises a housing fastening part coupled to the street light housing; an angle adjustment part for adjusting the installation angle of the street light housing; and a support mounting part coupled to the support. Claim 13 An LED lighting fixture according to claim 12, characterized in that a housing fastening portion wire hole through which a wire passes is formed in the housing fastening portion. Claim 14 delete Claim 15 An LED luminaire according to any one of claims 1, 2 and 9, wherein the plurality of light source modules are independently arranged in each stepped structure so as to reduce or prevent interference between heat rising from the lower light source module and the heat dissipation of the upper light source module. Claim 16 An LED lighting fixture according to claim 1, wherein the ventilation holes of the side covers of the floodlight housing are formed in a multi-stage arrangement along the vertical direction to correspond one-to-one with each of the different heights of the plurality of floodlight housing module mounting parts, and external air is introduced through each of the multi-stage arranged ventilation holes of the side covers of the floodlight housing to absorb heat from the light source module located at the corresponding height, and then provides a heat dissipation path to exit to the outside through the ventilation holes of the floodlight housing cover formed in the floodlight housing cover.

Images