Lighting device

Abstract

The present invention relates to a lighting device, and more particularly, to a lighting device comprising: an LED unit in which a plurality of LED elements are mounted on one of both surfaces and a surface for radiating light is formed, and a heat-generating surface for releasing a predetermined amount of heat is formed on the other of both surfaces; a plurality of heat dissipation units which are disposed vertically in the direction of gravity with respect to the heating surface of the LED unit, are disposed at a predetermined distance in the left-right direction, and form a refrigerant flow space in which a phase-changeable refrigerant is filled; and a lighting main body on which the LED unit and the plurality of heat dissipation units are mounted, and in which a portion in the direction of the radiation surface is opened. Accordingly, an advantage of maximizing heat dissipation performance is provided.

Description

Technical Field

[0001] The present invention relates to a lighting device, and more specifically, to a lighting device comprising a heat dissipation unit that can effectively dissipate heat generated from LED units, thereby maximizing heat dissipation performance. Background Technology

[0002] In various industrial fields such as communications, electronics, and electrical engineering, related technologies are undergoing continuous and advanced development to adapt to more sophisticated industries. This advanced technological development requires high-power energy, and equipment using high-power energy inevitably faces the problem of high heat generation. Therefore, it is essential to simultaneously develop appropriate heat dissipation systems.

[0003] Cooling systems are widely used in various industries, including air conditioning, mobile communications, data centers, aviation mobile equipment, electric vehicles, energy storage devices, and displays. These cooling systems are a major contributor to electricity consumption, which continues to increase with industrial development.

[0004] Generally speaking, heat dissipation equipment can be broadly divided into active heat dissipation equipment and passive heat dissipation equipment, as follows: active heat dissipation equipment mainly uses forced convection generated by fans, while passive heat dissipation equipment belongs to the technology of using natural convection without using fans.

[0005] However, conventional heat dissipation systems have limitations in dissipating the high temperatures generated by constantly evolving advanced technologies. Given the need for innovative technologies to address this problem in related industries, heat dissipation devices are being developed as part of this solution.

[0006] Phase transition refers to the phenomenon where the inherent state of a liquid / gas / solid changes when it accumulates a large amount of energy or releases stored heat energy.

[0007] A phase transition refers to a change in the physical arrangement of molecules, rather than a chemical reaction such as chemical bonding or formation. When energy is applied to any substance, the heat in the state where no phase transition occurs is called sensible heat, while the heat consumed during a phase transition is called latent heat.

[0008] However, heat dissipation devices suffer from the problem that temperature and pressure are directly proportional; if the temperature increases, the pressure will also increase. Within a sealed heat dissipation device, if the pressure rises due to the high temperature conducted from the heat source, the device itself may rupture. To solve this problem, it is necessary to prevent pressure increases and require sufficient internal volume within the heat dissipation device to achieve pressure equilibrium during the phase transition cycle of matter.

[0009] In addition, it is necessary to select a type of refrigerant that does not chemically react with the metal material of the heat dissipation device to prevent the pressure inside the heat dissipation structure from increasing.

[0010] If the metal material constituting the heat dissipation device is aluminum (Al), and water is chosen as the refrigerant, an oxidation reaction will occur between the refrigerant and water in the initial stage of filling, producing aluminum oxide. During this process, some of it will be replaced by hydrogen, which may increase the internal pressure. Therefore, heat dissipation devices made of aluminum usually choose special refrigerants such as Honeywell refrigerants or chlorofluorocarbons (CFCs) to prevent this chemical reaction.

[0011] However, there is a recent trend in many countries to restrict the use of special refrigerants other than water, such as Honeywell refrigerants or chlorofluorocarbons (CFCs). The reason is as follows: As mentioned above, these special refrigerants may leak into the external environment when heat dissipation equipment breaks due to increased internal pressure or during product transportation, handling, and installation, potentially polluting the atmosphere and the external environment.

[0012] However, if special refrigerants are excluded as usable refrigerants, aluminum has higher thermal conductivity than other metal materials, which inevitably limits the use of commonly used aluminum materials to construct heat dissipation devices. As a result, the manufacturing industry of related heat dissipation devices is actively carrying out research on the substitution of metal materials for heat dissipation devices and heat dissipation-related research.

[0013] On the other hand, as relevant research material addressing the aforementioned shortcomings, the following is a brief introduction to the paper by co-author Liqiang Deng published in the *International Journal of Thermal Sciences* (published on August 15, 2022; hereinafter referred to as the "preliminary paper") entitled "Thermal study of the natural air cooling using rollbond flat heat pipe as plate fin under multi-heat source condition":

[0014] Figure 1 This is a schematic diagram illustrating the manufacturing process of the pressure-welded flat plate heat pipe (hereinafter referred to as "RBFHP") published in the previous paper (refer to Figure 4 of the previous paper). Figure 2 yes Figure 1 A schematic diagram of the experimental setup for RBFHP (from a previous paper) Figure 6 ).

[0015] like Figure 1 As shown, the RBFHP method in the previous paper uses a pre-designed mold to print non-adhesive graphite on a first aluminum sheet, which is then stacked onto a second aluminum sheet, followed by hot rolling. Cold rolling The annealing process involves rolling and joining two aluminum sheets, and welding an inlet pipe to inject high-pressure gas into the plate from the inlet, causing the unbonded portion to expand and form a self-connected chamber.

[0016] Previous papers have proposed the RBFHP model described above in the following ways: Figure 2 The results obtained under the test conditions shown (testing with four uniformly distributed heat sources) are superior to those obtained with ordinary aluminum plates (fins).

[0017] However, as mentioned above, the RBFHP in the previous paper is manufactured by a roll bonding method, which presents the problem of difficulty in arranging the refrigerant (especially liquid refrigerant) close to the bonding end (i.e., the edge end) closest to the heat source.

[0018] That is, the roller bonding method must join the edge of the frame, and at least the overlapping part should be spaced apart from the heat source (heating element), so the properties of the material itself will generate thermal conduction resistance.

[0019] The manufacturing method of RBFHP in the previous paper is limited to roll bonding. The reason for adopting this method is that it is the best way to form a cavity inside two aluminum sheets. Since bending the aluminum sheets themselves is not feasible in reality, this process is considered an unavoidable choice.

[0020] On the other hand, in the RBFHP of the previous paper, when the vaporized refrigerant moves near the heat source and condenses into the condensation region, it has a honeycomb structure to maximize the area. However, the movement range of the gaseous refrigerant moving rapidly to the upper part farthest from the heat source becomes longer. Moreover, the return path of the liquid refrigerant condensed in the condensation region overlaps with the flow range of the gaseous refrigerant, so a large flow resistance problem is expected.

[0021] In particular, the components of a lighting device that receive electrical energy to emit light (e.g., LED units) generate a large amount of heat through electrical resistance during operation. The rapid release of this generated heat has a significant impact on the performance and lifespan of the lighting device, thus requiring the application of more advanced heat dissipation equipment. Summary of the Invention

[0022] Technical issues

[0023] The present invention is proposed to solve the above-mentioned technical problems, and its purpose is to provide a lighting device including a heat dissipation unit that can effectively release the heat generated from the LED unit.

[0024] Meanwhile, another objective of the present invention is to provide a lighting device in which the heat dissipation area of ​​a small LED unit can be appropriately increased by the heat dissipation unit described above, thereby significantly improving both light distribution performance and heat dissipation performance.

[0025] Meanwhile, another object of the present invention is to provide a lighting device that does not cause temperature deviations between LED elements even when the spacing between multiple LED elements is close, thereby preventing an increase in product size.

[0026] Another object of the present invention is to provide a lighting device in which multiple LED elements constituting an LED unit can be densely arranged, thereby preventing a decrease in light distribution performance.

[0027] The technical issues of this invention are not limited to those mentioned above, and those skilled in the art to which this invention pertains will clearly understand other issues from the following description. Technical solution

[0028] A lighting device according to an embodiment of the present invention includes: an LED unit having a plurality of LED elements mounted on one of its two sides, forming a radiating surface for radiating light, and a heating surface for releasing predetermined heat on the other side; a plurality of heat dissipation units being arranged vertically up and down in the direction of gravity and spaced at predetermined distances in the left and right directions relative to the heating surface of the LED unit, and forming a refrigerant flow space filled with a phase-change refrigerant inside; and a lighting body having the LED unit and the plurality of heat dissipation units mounted, and having an opening in the radiating surface direction.

[0029] Here, the plurality of heat dissipation units are designed to receive heat from the LED unit by using the lighting body as a medium. The lighting body is equipped with the LED unit and extends vertically to form a plurality of press-in portions at positions corresponding to the heat-generating surface.

[0030] In addition, the plurality of heat dissipation units can be pressed in and fixed in the press-in portion, such that at least a portion of the refrigerant flow space is located inside the plurality of press-in portions formed by a pair of grooves and ribs.

[0031] In addition, one side of the plurality of heat dissipation units is in contact with the heat-generating surface of the LED unit, while the other side can receive the heat of the LED unit through a heat transfer medium block. The heat transfer medium block is formed with concave and convex portions that make thermal contact with the refrigerant flow space side.

[0032] In addition, the concave and convex portions of the heat transfer medium block are inserted from the outside into the refrigerant flow space side, and can come into contact with the liquid refrigerant filling the refrigerant flow space.

[0033] Additionally, the refrigerant flow space of the plurality of heat dissipation units may include: a first refrigerant flow path, constituting an evaporation region, wherein liquid refrigerant is evaporated in the refrigerant filling the interior by heat transferred from the LED unit; and a plurality of second refrigerant flow paths, disposed in the condensation region, wherein gaseous refrigerant diffused on the side of the first refrigerant flow path is condensed by heat exchange with the outside air, thereby guiding the condensed liquid refrigerant to flow towards the side of the first refrigerant flow path.

[0034] In addition, the plurality of heat dissipation units include a heat conduction panel on one side and a heat conduction panel on the other side. The heat conduction panel on one side forms one side of the refrigerant flow space, and the heat conduction panel on the other side forms the other side of the refrigerant flow space. The heat conduction panel on one side and the heat conduction panel on the other side can be formed by bending and joining together as a single metal panel component to form the refrigerant flow space, or by joining together as two metal panels to form the refrigerant flow space.

[0035] In addition, the metal panel components constituting the heat conduction panel on one side and the heat conduction panel on the other side can be made of SUS (stainless steel).

[0036] In addition, when the material of the metal panel component constituting the heat conduction panel on one side and the heat conduction panel on the other side is SUS material, the refrigerant can be water.

[0037] In addition, the plurality of heat dissipation units also include a plurality of strength reinforcement parts, which are formed by protruding from the heat conduction panel on one side and the heat conduction panel on the other side toward the refrigerant flow space; when the heat conduction panel on one side and the heat conduction panel on the other side are joined together, the plurality of strength reinforcement parts can be joined together in the refrigerant flow space.

[0038] In addition, the plurality of heat dissipation units may also include an absorber disposed in the first refrigerant flow path in the refrigerant flow space to promote the evaporation of liquid refrigerant in the refrigerant by heat supplied from the LED unit.

[0039] In addition, the absorber may be composed of either a braided body made of thermally conductive metal wires or a sintered body made of metal powder of a predetermined material.

[0040] In addition, when the absorber is composed of the sintered body, the metal powder constituting the sintered body may be the SUS material constituting the heat conduction panel on one side and the heat conduction panel on the other side.

[0041] In addition, the plurality of heat dissipation units may also include ventilation ducts for evacuating the refrigerant flow space before or after the refrigerant is injected into the refrigerant flow space.

[0042] In addition, the ventilation duct can be integrated with either one of the heat conduction panels on one side and the other side, or it can be integrated with the heat conduction panels on one side and the other side.

[0043] Additionally, the lighting device may also include a finger protection plate assembly configured to cover the plurality of heat dissipation units other than the radiating surface of the LED unit, and having a plurality of vent holes through which external air is allowed to exchange heat with the plurality of heat dissipation units.

[0044] The effects of the invention

[0045] According to an embodiment of the present invention, the lighting device can increase the heat dissipation area of ​​a small LED unit by forming a heat dissipation unit with a refrigerant flow space filled with a phase-change refrigerant inside, thus achieving a significant improvement in both light distribution performance and heat dissipation performance.

[0046] In addition, the present invention can prevent temperature deviations between LED elements even when the spacing between multiple LED elements is close, thereby preventing the product size from increasing. Attached Figure Description

[0048] Figure 1 This is a schematic diagram illustrating the manufacturing process of the pressure-welded flat plate heat pipe (hereinafter referred to as "RBFHP") published in the prior paper (refer to Figure 4 of the prior paper).

[0049] Figure 2 yes Figure 1 A schematic diagram of the experimental setup for RBFHP (from a previous paper) Figure 6 ).

[0050] Figure 3a and Figure 3b This is a perspective view showing the front and rear portions of a lighting device according to an embodiment of the present invention.

[0051] Figure 4a and Figure 4b As respectively Figure 3a and Figure 3b The exploded perspective view shows the state of the heat dissipation unit separated from the lighting body.

[0052] Figure 5a and Figure 5b As respectively Figure 3a and Figure 3b The exploded perspective view shows the state of the lighting body combined with the heat dissipation unit.

[0053] Figure 6 It is along Figure 3a A cross-sectional view taken from line AA.

[0054] Figure 7a and Figure 7b It is shown Figure 3a and Figure 3b A three-dimensional view of the front and rear parts of the lighting main body in the structure.

[0055] Figure 8a and Figure 8b They are Figure 7a and Figure 7b An exploded 3D diagram.

[0056] Figure 9 This is an exploded perspective view showing the mounting configuration of the heat dissipation unit in a first implementation example for the rear side of the lighting body.

[0057] Figure 10 This is a perspective view of a heat dissipation unit for a first implementation example of heat dissipation in a lighting device according to an embodiment of the present invention.

[0058] Figure 11 yes Figure 10 An exploded 3D diagram.

[0059] Figure 12 It is shown Figure 10 A three-dimensional view of the structure of the heat dissipation unit with the heat conduction panel on one side removed.

[0060] Figure 13 It is along Figure 10 A cross-sectional view taken from the BB line.

[0061] Figure 14 This is a perspective view showing the angle adjustment unit in the structure of a lighting device according to an embodiment of the present invention.

[0062] Figure 15 yes Figure 14 An exploded 3D diagram.

[0063] Figure 16a and Figure 16b It is a partial projected three-dimensional diagram used to illustrate the operating mode of the tilting rotation and steering rotation of the angle adjustment unit.

[0064] Figure 17 This is a perspective view showing a lighting device according to another embodiment of the present invention.

[0065] Figure 18aand Figure 18b For explanation Figure 17 The front and rear portions of the finger guard assembly in the structure are partially dissected in a three-dimensional view.

[0066] Figure 19 This is a top perspective view showing a lighting device according to another embodiment of the present invention.

[0067] Figure 20 This is a perspective view showing an example of the use of a lighting device according to another embodiment of the present invention.

[0068] Figure 21 This is a bottom perspective view showing a lighting device according to another embodiment of the present invention.

[0069] Figure 22a and Figure 22b It is to utilize Figure 19 and Figure 21 The top and bottom exploded perspective views of the combined form of the electronic component storage rack and the inclined support in the structure.

[0070] Figure 23a and Figure 23b It is shown Figure 19 and Figure 21 The front and rear sections of the electronic component storage rack in the structure are disassembled into a three-dimensional diagram.

[0071] Figure 24a and Figure 24b It is shown Figure 19 and Figure 21 The front and rear portions of the finger guard assembly in the structure are partially dissected in a three-dimensional view.

[0072] Figure 25a and Figure 25b This is a perspective view showing the front and rear portions of a lighting device according to another embodiment of the present invention.

[0073] Figure 26a and Figure 26b It is shown by Figure 25a and Figure 25b Another implementation example of the structure is shown in the three-dimensional diagram of the front and rear parts of the electronic component storage rack.

[0074] Figure 27a and Figure 27b It is shown by Figure 25a and Figure 25b Another implementation example of the structure is shown in the three-dimensional diagram of the front and rear parts of the finger guard assembly.

[0075] Figure 28a and Figure 28b It is shown in Figure 19 and Figure 21Top-view and bottom-view perspective views of the structure, excluding the finger guard assembly.

[0076] Figure 29a and Figure 29b yes Figure 28a and Figure 28b An exploded 3D diagram.

[0077] Figure 30a and Figure 30b It is shown in Figure 28a and Figure 28b Top-view and bottom-view perspective views of the structure, excluding the main lighting unit and the air supply unit.

[0078] Figure 31a and Figure 31b As Figure 30a and Figure 30b The exploded 3D view of each is an exploded 3D view of the LED unit.

[0079] Figure 32a and Figure 32b It is shown in Figure 30a and Figure 30b The structure includes front and rear perspective views of a single heat dissipation unit combined with an LED unit.

[0080] Figure 33a and Figure 33b yes Figure 32a and Figure 32b An exploded 3D diagram.

[0081] Figures 34a to 34c yes Figure 19 A perspective view of the heat dissipation unit in the second implementation example of the structure from various directions.

[0082] Figures 35a to 35c yes Figures 34a to 34c An exploded 3D diagram.

[0083] Figure 36a yes Figure 34a Side view (a), cross-sectional view (b) taken along line AA and its enlarged view (c).

[0084] Figure 36b yes Figure 34a Side view (a), perspective view of the cut along line AA (b), and enlarged view of the cut (c).

[0085] Figure 37a It is along Figure 19 The vertical cross-section taken from the BB line.

[0086] Figure 37b It is along Figure 19 A 3D view of the cut taken from the BB line.

[0087] Figure 38 It is shown Figure 30a and Figure 30b A perspective view and a partially enlarged view of the applicable lighting device for the heat dissipation unit of the third implementation example in the structure.

[0088] Figure 39 yes Figure 38 An exploded 3D diagram.

[0089] Figure 40 This is a perspective view showing the configuration of an LED unit combined with a heat dissipation unit.

[0090] Figure 41 yes Figure 40 A three-dimensional view of the cut.

[0091] Figure 42a It is shown Figure 38 A 3D view of a single heat dissipation unit in the structure.

[0092] Figure 42b yes Figure 42a An exploded 3D diagram.

[0093] Figure 43 yes Figure 42a Side view (a), cross-sectional view (b) taken along line CC and its enlarged view (c).

[0094] Figure 44 yes Figure 42a Side view (a). 3D view of the cut along the CC line (b) and its enlarged portion (c).

[0095] Figure 45 It is shown Figure 25a and Figure 25b The internal perspective view (side view) of the heat dissipation unit in the fourth implementation example of the structure.

[0096] Figure 46 yes Figure 45 An exploded 3D diagram.

[0098] Explanation of reference numerals in the attached figures

[0099] 100, 1000: lighting device 110: lighting subject

[0100] 120: Translucent panel; 130: Press-in section

[0101] 150: LED unit; 200: Heat dissipation unit of the first implementation example.

[0102] 210: First refrigerant flow path; 220: Second refrigerant flow path

[0103] 230: Third refrigerant flow path; 240: Multiple strength-enhancing sections.

[0104] 300: Absorber; 301: Auxiliary Absorber

[0105] 500: Finger guard assembly; 600: Angle adjustment unit

[0106] 610: Fixed bracket; 620: Steering block

[0107] 630: Tilted block 1100: Lighting main body

[0108] 1111: Support frame section; 1150: LED unit

[0109] 1151: LED board mounting block; 1152: LED board

[0110] 1155: LED components; 1200, 1200', 1200'': heat dissipation unit

[0111] 1200-1: One side heat conduction panel; 1200-2: The other side heat conduction panel.

[0112] 1205: Refrigerant flow space; 1210: First refrigerant flow path

[0113] 1215: Inclined guide; 1215a: Refrigerant dispersion guide

[0114] 1220: Second refrigerant flow path; 1230: Third refrigerant flow path

[0115] 1240: Strength Reinforcement Section; 1300: Absorber

[0116] 1310: Evaporation section sintered body; 1320: Sintered body column

[0117] 1330: Sintered body base; 1500: Finger guard assembly

[0118] 1600: Inclined support section; 1700: Electronic component storage rack

[0119] 1800: Air Supply Department Detailed Implementation

[0121] Hereinafter, a lighting device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0122] Regarding the affixing of reference numerals to components in the various figures, care should be taken to ensure that identical components, even when shown in different figures, have the same reference numerals as much as possible. Furthermore, in the description of embodiments of the present invention, detailed descriptions of related well-known structures or functions are omitted if it is determined that such detailed descriptions would hinder understanding of the embodiments of the present invention.

[0123] Furthermore, when describing the components of embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc., may be used. These terms are merely used to distinguish the components from others and should not limit the nature or order of the components. Additionally, unless otherwise defined, all terms applicable herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Commonly used terms, such as those defined in dictionaries, should be interpreted as having the same meaning as in relevant technical articles and should not be interpreted in an ideal or overly formal sense unless explicitly defined herein.

[0125] Figure 3a and Figure 3b This is a perspective view showing the front and rear portions of a lighting device according to an embodiment of the present invention; Figure 4a and Figure 4b As respectively Figure 3a and Figure 3b The exploded perspective view is an exploded perspective view showing the state of the heat dissipation unit separated from the lighting body; Figure 5a and Figure 5b As respectively Figure 3a and Figure 3b The exploded perspective view is an exploded perspective view showing the state of the lighting body combined with the heat dissipation unit according to the first implementation example; Figure 6 It is along Figure 3a A cross-sectional view taken by line AA; Figure 7a and Figure 7b It is shown Figure 3a and Figure 3b A three-dimensional view of the front and rear parts of the lighting main body in the structure; Figure 8a and Figure 8b They are Figure 7a and Figure 7b An exploded 3D diagram.

[0126] like Figures 3a to 8bAs shown, a lighting device 100 according to an embodiment of the present invention includes: a lighting body 110 having a generally rectangular (or square) vertical cross-sectional shape, and being thin in the front-to-back direction, and having an open front; an LED unit 150 mounted and incorporated inside the lighting body 110, and including an LED plate 151 on which a plurality of LED elements 155 are mounted.

[0127] Here, one side of the LED unit 150 is equipped with a plurality of LED elements 155 and forms a radiating surface for radiating light, while the other side of the double-sided unit can form a heating surface to release the preset heat generated during the operation of the LED elements 155.

[0128] As described above, the lighting body 110 provides mounting locations for the LED unit 150 and a plurality of heat dissipation units 200, and the portion in the direction of the radiating surface of the light generated from the LED unit 150 can be formed as an opening. This can also be considered to be the case in the lighting device 1000 according to another embodiment of the present invention, which will be described later.

[0129] In the front part of the lighting body 110, the mounting space 110S for stacking and mounting the LED unit 150 described above can be configured as a groove shape with a front opening. In the back part of the lighting body 110, it can be integrated with a plurality of press-fit parts 130, which are used to press-fit the heat dissipation unit 200 configured in the first implementation example described later.

[0130] Therefore, using the lighting body 110 with multiple press-in portions 130 as a medium, multiple heat dissipation units 200 can receive heat from the LED unit 150. The press-in portions 130 are formed extending in the vertical direction at a position corresponding to the heating surface of the LED unit 150.

[0131] Meanwhile, multiple screw fastening holes 112h can be formed at intervals on the front end frame of the lighting body 110 for threaded assembly of the light-transmitting panel 120 described later.

[0132] On the other hand, such as Figure 6 a to Figure 8b As shown, the lighting device 100 according to an embodiment of the present invention may further include a light-transmitting panel 120, which is made of a transparent material (or a translucent material) that allows light generated from LED units 150 densely mounted in front of an LED panel 151 to pass forward, and blocks the front of the opening of the lighting body 110.

[0133] More specifically, such as Figure 8a and Figure 8bAs shown, the light-transmitting panel 120 may include: a light-transmitting glass 121 configured as a panel shape of a transparent material (or a translucent material); a fixing frame 123 serving as a medium for threading the light-transmitting glass 121 onto the front end of the lighting body 110 using a plurality of fixing screws 127; and a waterproof sealing gasket 125 inserted between the fixing frame 123 and the front end frame of the lighting body 110 to perform a waterproof function.

[0134] In the edge end of the fixed frame 123, a plurality of screw through holes 129h are formed at positions corresponding to the plurality of screw fastening holes 112h formed at the front end of the lighting body 110, so that the aforementioned fixing screws 127 can pass through.

[0135] Here, the waterproof sealing gasket 125 is made of rubber material. When the fixing frame 123 is fastened to the front end of the lighting body 110 by the fixing screw 127, if the tightening force of the fixing screw 127 is applied to the fixing frame 123, compression deformation occurs, thereby preventing foreign objects containing rainwater from entering the interior.

[0136] On the other hand, as described above, the rear side of the lighting body 110 can be integrally formed with a plurality of press-in portions 130.

[0137] Multiple press-in portions 130 serve as locations for detachably mounting multiple heat dissipation units 200 (described later). They are configured to have a pair of groove ribs 130a and 130b protruding rearward from the rear side of the lighting body 110 by a predetermined length. The heat dissipation units 200 are press-fitted into the mounting groove 130h formed between the pair of groove ribs 130a and 130b by an interference fit, so that a portion of the heat dissipation unit 200 (e.g., a portion of the refrigerant flow space 205 described later) is located in the mounting groove 130h.

[0138] The heat dissipation units 200, 1200, 1200', and 1200" configured in the various implementation examples described below serve as the core heat dissipation tools for electronic devices such as the lighting device 100 according to an embodiment of the present invention. These electronic devices generate significant heat during operation, and their lifespan depends on the ability to quickly release this heat to the outside. Therefore, it is a very important design factor to design the device to prevent temperature deviations between the LED elements 155 constituting the LED unit 150.

[0139] In particular, for the case of a spotlight, such as a lighting device 100 according to an embodiment of the present invention configured to radiate a narrow beam, there is a greater need for densely packed small light sources (LED elements 155) and for heat dissipation units 200 arranged and designed to minimize temperature deviations.

[0140] More specifically, in spotlighting, the smaller the light source size, the better the desired light distribution effect can be achieved, but if the light source size is too small, it will be very detrimental to heat dissipation.

[0141] Furthermore, in the case of focused lighting based on an LED unit 150 with multiple LED elements 155 installed (lighting device 100 according to an embodiment of the present invention), in order to ensure the desired light distribution performance, not only should the absolute temperature of the LED elements 155 be low, but there should also be no temperature deviation (relative temperature) between the LED elements 155. The reason for this is as follows: if the temperature deviation between the LED elements 155 is large, it will not only shorten the lifespan of the lighting device 100, but also reduce the light distribution performance.

[0142] Therefore, in the past, the design of heat dissipation units used in spotlighting was such that, in order to minimize the temperature deviation mentioned above, the optimal design scheme was derived based on the shape of the lighting body or the position of the LED units. Since additional heat dissipation structures had to be used, not only did the number of parts increase, but the product size also increased.

[0143] like Figures 3a to 8b As shown, the lighting device 100 according to an embodiment of the present invention, when used as a type of spotlighting, may further include a heat dissipation unit 200 implemented by a plurality of first implementations, which is press-fitted into a press-fit portion 130 formed on the back side of the lighting body 110, so that even without a separate detailed heat dissipation design, there will be no temperature deviation between the LED elements 155.

[0144] Meanwhile, an angle adjustment unit 600 is integrated on the lower side of the lighting body 110, thereby allowing the illumination angle to be adjusted according to the lighting direction of the lighting body 110. The specific structure and function of the angle adjustment unit 600 will be explained in more detail later.

[0145] On the other hand, a finger guard assembly 500 of an embodiment can also be combined on the back of the lighting body 110. The finger guard assembly 500 is configured to cover all of the lower ends of the plurality of heat dissipation units 200 except as described above, and the plurality of vents (not shown in the figure) are configured in a grid shape to achieve ventilation, thereby realizing heat exchange between the external air (outer air) and the heat dissipation unit 200.

[0146] like Figure 4a and Figure 4bAs shown, the finger protection panel assembly 500 may include: a left finger protection panel 500L covering the left side of a plurality of heat dissipation units 200; a right finger protection panel 500R covering the right side of a plurality of heat dissipation units 200; an upper finger protection panel 500T covering the upper parts of the left finger protection panel 500L and the right finger protection panel 500R; a rear finger protection panel 500P connected to the rear ends of the left finger protection panel 500L and the right finger protection panel 500R, and covering the rear part of the plurality of heat dissipation units 200; and an upper finger protection panel 500T covering the upper end of the plurality of heat dissipation units 200.

[0147] Additionally, the finger protection panel assembly 500 may include: a lower horizontal panel rod 500DB, which is connected to and supported by the lower ends of the left finger protection panel 500L, the right finger protection panel 500R, and the rear finger protection panel 500P; and an upper horizontal panel rod 500UB, which is connected to and supported by the upper ends of the left finger protection panel 500L, the right finger protection panel 500R, and the rear finger protection panel 500P.

[0148] Here, for each finger protection panel 500L, 500R, 500P, 500T, the ends that come into contact can be assembled using multiple fixing screws 503, or the ends that come into contact can be assembled using multiple fixing screws (without reference numerals) as a medium, with the lower horizontal support rod 500DB or the upper horizontal support rod 500UB as a medium.

[0149] On the other hand, such as Figure 6 As shown, a mounting groove 505 is formed on the lower horizontal support rod 500DB, which slopes downward from the front to the rear. The mounting groove 505 accommodates the ventilation pipe 270 in the structure of the heat dissipation unit 200 described later, and can protect the ventilation pipe 270 from external influences.

[0150] As described above, the finger protection panels 500L, 500R, 500P, and 500T of the finger protection panel assembly 500 according to one embodiment can be configured as a panel shape having a plurality of vent holes 501. The vent holes 501 are formed to allow external air to flow into and internal air to be discharged from the heat dissipation unit 200, which is an internal protection object, while also preventing external workers, including fingers, from getting close to the skin.

[0151] However, the individual finger protection panels 500L, 500R, 500P, and 500T, which are the main structures of the finger protection panel assembly 500, do not need to be configured in a panel shape. Instead, as in another implementation example of the finger protection panel assembly 500-1 described later, some structures can be replaced by structures such as the support tube 510 while maintaining the skeleton. This will be explained in more detail later.

[0152] In the structure of the finger protection panel assembly 500, the front ends of the left finger protection panel 500L and the right finger protection panel 500R are screwed and fixed to the left and right edges of the back of the lighting body 110. With the upper and lower ends of the rear ends of the right finger protection panel 500R and the left finger protection panel 500L connected in a horizontal direction to the left and right ends of the upper horizontal panel rod 500UB and the lower horizontal panel rod 500DB, the upper finger protection panel 500T is screwed and fixed to the upper and lower parts of the right finger protection panel 500R and the left finger protection panel 500L. The rear ends of the right finger protection panel 500R and the left finger protection panel 500L, as well as the upper horizontal panel rod 500UB and the lower horizontal panel rod 500DB, can be screwed and fixed to the rear finger protection panel 500P.

[0153] In particular, a heat sink support slot 500DB-1 can also be formed on the lower horizontal panel rod 500DB. The heat sink support slot 500DB-1 is configured in a slot shape to support the portion of the structure of the heat sink unit 200 in the first implementation example described later, which corresponds to the heat sink portion 203.

[0154] Figure 9 This is an exploded perspective view showing the mounting configuration of the heat dissipation unit in a first implementation example for the rear side of the lighting body; Figure 10 This is a perspective view showing a heat dissipation unit of a first implementation example for heat dissipation of a lighting device according to an embodiment of the present invention; Figure 11 yes Figure 10 Exploded 3D diagram; Figure 12 It is shown Figure 10 A three-dimensional view of the structure of the heat dissipation unit with one side of the heat conduction panel removed; Figure 13 It is along Figure 10 A cross-sectional view taken from the BB line.

[0155] like Figure 9 As shown, the heat dissipation unit 200 according to the first implementation example can be arranged on the back of the lighting body 110 in a vertical direction, and multiple heat dissipation units 200 can be arranged at predetermined distances in the left and right directions of the lighting body 110.

[0156] Here, according to the first implementation example, the heat dissipation unit 200 is configured as a plurality of units and is arranged vertically up and down in the direction of gravity for the heat-generating surface of the LED unit 150, and is arranged at a predetermined distance in the left and right directions, and a refrigerant flow space 205 filled with a phase-change refrigerant can be formed inside.

[0157] In order to install the multiple heat dissipation units 200 as described above, the press-in portion 130 disposed on the back of the lighting body 110 is also extended in the vertical direction, and each press-in portion 130 is also arranged in parallel at a predetermined distance in the left and right direction.

[0158] The press-in portion 130, constructed with the structure described above, has the advantage of minimizing the resistance to the upward flow of the rising airflow generated by the heat dissipation unit 200 through the rear part of the lighting body 110.

[0159] like Figures 9 to 13 As shown, a refrigerant flow space 205 filled with refrigerant can be formed inside the heat dissipation unit 200 according to the first implementation example.

[0160] More specifically, such as Figures 10 to 13 As shown, the heat dissipation unit 200 according to the first implementation example may include: a heat conduction panel 200-1 on one side, forming one side of the refrigerant flow space 205 in the thickness direction; and a heat conduction panel 200-2 on the other side, forming the other side of the refrigerant flow space 205 in the thickness direction.

[0161] Here, the refrigerant flow space 205 can be formed by joining one side heat conduction panel 200-1, which is composed of two metal panel components, with the other side heat conduction panel 200-2 along the edge of the frame, or by bending a single metal panel component and then joining it along the edge of the frame except for the bent portion of the side heat conduction panel 200-1 and the other side heat conduction panel 200-2 that are joined together.

[0162] On the other hand, such as Figures 10 to 13 As shown, the refrigerant flow space 205 may include: a first refrigerant flow path 210, which stores (preserves) liquid refrigerant and is equivalent to an evaporation region. The liquid refrigerant stored (preserved) is phase-changed (evaporated) into a gaseous state by heat supplied from the LED unit 150, and is formed by extending vertically upwards; and a second refrigerant flow path 220, which is the flow path of liquid refrigerant, formed in the condensation region other than the evaporation region, and is formed by tilting backwards in an oblique direction, so that one end is connected to the first refrigerant flow path 210, while the other end is located at a higher position than the aforementioned end in the direction of gravity, thereby guiding the liquid refrigerant that has condensed and phase-changed from a gaseous state in the condensation region to flow towards the first refrigerant flow path 210.

[0163] Hereinafter, the region located near the LED unit 150, where the liquid refrigerant is converted into a gaseous refrigerant by the heat supplied from the LED unit 150, can be defined as the "evaporation region" mentioned above. The entire refrigerant flow space 205, excluding the evaporation region, where the gaseous refrigerant is converted into a liquid refrigerant, can be defined as the "condensation region" mentioned above. The first refrigerant flow path 210 is located at the location corresponding to the evaporation region, while the second refrigerant flow path 220 is located at the location corresponding to the condensation region.

[0164] Here, the evaporation zone and the condensation zone are distinguished based on the function of the refrigerant, not entirely by physical division. As in the first implementation example of the heat dissipation unit 200, which is press-fitted into the press-in portion 130 of the lighting body 110, the press-in end 201 side (described later) is used... Figure 10 Using the reference numeral "F" in the attached diagram, the front end is defined as the evaporation zone, and the remaining portion can be defined as the condensation zone.

[0165] Furthermore, the end of the first refrigerant flow path 210, which is the evaporation zone, is defined as the "press-in end 201" from the perspective of the press-in portion 130 installed on the back of the aforementioned lighting body 110, while the remaining frame end portions other than the press-in end 201 can be defined as the "heat dissipation plate portion 203" from the perspective of performing actual heat exchange with the outside air.

[0166] In particular, the first refrigerant flow path 210 can be a location where liquid refrigerant is filled into the refrigerant at intervals determined by the material thickness of the metal panel component, near the press-in portion 130 close to the LED unit 150.

[0167] In this case, the first refrigerant flow path 210, which serves as the portion for storing and preserving the liquid refrigerant in the refrigerant flow space 205, can be vertically positioned in the direction of gravity. Therefore, considering the volume expansion during the phase change of the liquid refrigerant stored in the first refrigerant flow path 210 into a gaseous state, the liquid surface can be located on the lower side in the direction of gravity.

[0168] Meanwhile, "the spacing distance determined by the material thickness" refers to the distance between the first refrigerant flow path 210 and the LED unit 150 or the pressing part 130.

[0169] On the other hand, the second refrigerant flow path 220 can be shaped by a plurality of inclined guides 215, which are formed to protrude toward the refrigerant flow space 205, so as to prevent the actual condensed liquid refrigerant from falling directly in the direction of gravity while being guided to flow obliquely toward the side of the first refrigerant flow path 210 by means of the surface tension property of the liquid.

[0170] More specifically, the second refrigerant flow path 220 provides the following flow path: if the gaseous refrigerant (gas-state refrigerant) condenses into a liquid refrigerant (liquid refrigerant) through a heat exchange process with the outside air in the condensation region, the volume of the refrigerant flow space 205 where condensation occurs gradually expands in situ, and the liquid refrigerant with a uniform flow rate flows toward the first refrigerant flow path 210 when flowing in the direction of gravity.

[0171] In particular, as described below, the second refrigerant flow path 220 can be defined among a plurality of inclined guides 215, which can suppress the liquid refrigerant condensed in the condensation region from flowing toward the first refrigerant flow path 210 side by means of surface tension and disperse it toward the second refrigerant flow path 220 side adjacent to its own flow path.

[0172] That is, as described below, the flow space between the multiple inclined guides 215 is narrower than the second refrigerant flow path 220, thus creating a surface tension effect, which can suppress the flow to the adjacent second refrigerant flow path 220 side.

[0173] As described above, if the dispersion flow of condensed liquid refrigerant is suppressed by multiple inclined guides 215 and the second refrigerant flow path 220, the vertical downward fall of liquid refrigerant due to gravity can be minimized. By connecting the lower ends of the first refrigerant flow path 210 at uniform intervals, the liquid refrigerant condensed in the condensation area will not be biased to either side, but will be supplied to the first refrigerant flow path 210 side at a uniform flow rate.

[0174] Meanwhile, multiple second refrigerant flow paths 220 can be defined between multiple inclined guides 215 that protrude from the inside of the refrigerant flow space 205, which are formed by the heat conduction panel 200-1 on one side and the heat conduction panel 200-2 on the other side facing each other.

[0175] Here, as Figure 10 and Figure 13 As shown, the plurality of inclined guides 215 defining the second refrigerant flow path 220 can be configured to protrude from the inner surfaces of the heat conduction panel 200-1 on one side and the heat conduction panel 200-2 on the other side toward the refrigerant flow space 205.

[0176] The plurality of inclined guides 215 can be configured in a straight line that slopes downward toward the first refrigerant flow path 210 in the direction of gravity. Therefore, after the liquid refrigerant condenses on the heat sink portion 203 side naturally condenses, it can flow toward the first refrigerant flow path 210 side along the plurality of downwardly inclined guides 215, and can perform the function of increasing the circulation speed of the liquid refrigerant.

[0177] Here, multiple second refrigerant flow paths 220 or multiple inclined guides 215 are arranged so that adjacent second refrigerant flow paths 220 or inclined guides 215 are arranged parallel to each other. Generally, for liquid refrigerant condensing in a condensation region having an area larger than that confined to the evaporation region of the first refrigerant flow path 210, the flow of liquid refrigerant can be dispersed by the compact and uniformly parallel arrangement of the second refrigerant flow paths 220 or inclined guides 215, thus having the advantage of dissipating heat evenly throughout the condensation region (or, the heat sink portion 203).

[0178] In addition, multiple inclined guides 215 are respectively formed on one side of the heat conduction panel 200-1 and the other side of the heat conduction panel 200-2, and the front ends protruding toward the refrigerant flow space 205 are not joined in the refrigerant flow space 205, but are formed in a spaced-apart form.

[0179] As described above, the second refrigerant flow path 220 should have a preferred thickness in the direction of gravity, from the perspective of performing the function of guiding the liquid refrigerant to flow in the direction of gravity, that is, the surface tension, due to the inherent properties of the liquid, should allow for a natural flow in the direction of gravity without interruption. Furthermore, the second refrigerant flow path 220 can be configured to suppress the dispersed flow towards the second refrigerant flow path 220 side by surface tension or gravity after the liquid refrigerant has condensed to a predetermined size or larger.

[0180] Meanwhile, at least one end of one end of the plurality of second refrigerant flow paths 220 or the plurality of inclined guides 215 is connected to the evaporation region or the first refrigerant flow path 210 formed in the evaporation region, and the end connected to the evaporation region or the first refrigerant flow path 210 formed in the evaporation region (i.e., any one end of one end and the other end) is located relatively lower in the direction of gravity compared to the other end of the one end and the other end.

[0181] Therefore, when at least one of the plurality of second refrigerant flow paths 220 is defined as "one end", one end has the same meaning as "lower end" which is located on the lower side with respect to the direction of gravity. Conversely, when the other of the plurality of second refrigerant flow paths 220 is defined as "other end", the other end may have the same meaning as "upper end" which is located on the upper side with respect to the direction of gravity.

[0182] Furthermore, as described above, the plurality of second refrigerant flow paths 220 or the plurality of inclined guides 215 may be configured such that at least one end of one end and the other end are connected to the first refrigerant flow path 210, and the two ends are connected in a straight line.

[0183] Based on the straight shape of the multiple second refrigerant flow paths 220 as described above, not only is the distance between the end of the first refrigerant flow path 210, which receives heat at the position closest to the heating element 140, and the other end of the outermost end of the condensation region that achieves active condensation through heat exchange with the outside air minimized, it can also be seen that the straight shape of the second refrigerant flow path 220 itself is the optimal shape that also minimizes the overlap length (flow resistance length) between the flow paths of liquid refrigerant and gaseous refrigerant.

[0184] That is, the heat dissipation unit 200 is adapted to a linear structure and a gas-liquid flow separation structure, which not only makes the first refrigerant flow path 210, which is located in the refrigerant flow space 205 inside the heat conduction panel 200-1 on one side and the heat conduction panel 200-2 on the other side, corresponding to the part of the press-in end 201, located close to the LED unit 150 or the press-in part 130, but also makes the gas-liquid circulation from the first refrigerant flow path 210 (i.e., one end in the width direction) to the outer end of the end portion of the condensation area (i.e., the other end in the width direction) unobstructed.

[0185] Meanwhile, the second refrigerant flow path 220 is configured to guide the liquid refrigerant undergoing phase change in the gaseous refrigerant in the refrigerant flow space, so that the multiple second refrigerant flow paths 220 do not branch from the other end in the width direction, i.e., the first refrigerant flow path 210 located on the opposite lower side in the gravity direction, to one end in the width direction.

[0186] On the other hand, as described above, the plurality of inclined guides 215 serve as flow paths for liquid refrigerant to flow in the direction of gravity, defining not only the second refrigerant flow path 220 between the individual inclined guides 215, but also performing the function of defining the third refrigerant flow path 230, which is equivalent to the portion spaced in the thickness direction and described later.

[0187] In the case described, the plurality of tilting guides 215 are preferably shaped to be tilted to the first refrigerant flow path 210, with the first refrigerant flow path 210 located at the lower part of the gravity direction due to the overall tilt of the lighting body 110, so as to form a flow path for the liquid refrigerant to flow.

[0188] Here, the second refrigerant flow path 220, defined in the space between adjacent inclined guides 215, can be a refrigerant flow path that extends upwardly from the first refrigerant flow path 210 toward the width-direction end sides of one side heat conduction panel 200-1 and the other side heat conduction panel 200-2, respectively. This is to allow the liquid refrigerant liquefied on the heat sink portion 203 side to easily move by its own weight toward the first refrigerant flow path 210 side where the absorber 300 is disposed.

[0189] On the other hand, multiple strength-enhancing parts 240 can be symmetrically formed protruding into the refrigerant flow space 205 at the locations corresponding to the condensation areas of the heat conduction panel 200-1 on one side and the heat conduction panel 200-2 on the other side.

[0190] When multiple strength-enhancing parts 240 are joined together by bending or joining one side of the heat conduction panel 200-1 and the other side of the heat conduction panel 200-2, they are joined at the contact points inside the refrigerant flow space 205 by using various joining processes, including laser welding, thereby enhancing the strength of the entire heat dissipation unit 200.

[0191] Furthermore, the multiple strength-enhancing sections 240 provide a larger interference area for collisions with the vaporized gaseous refrigerant in order to dissipate heat in the condensation region, thereby also performing the function of achieving active condensation. That is, the multiple strength-enhancing sections 240 further increase the surface area in contact with the gaseous refrigerant flowing freely through the third refrigerant flow path 230 (described later), thereby achieving the effect of refrigerant condensation in a shorter time.

[0192] At the same time, such as Figures 10 to 13 As shown, the heat dissipation unit 200 according to the first implementation example may also include a third refrigerant flow path 230, which mainly serves as the flow path for gaseous refrigerant other than the liquid refrigerant flowing along the plurality of inclined guides 215.

[0193] Here, refer to Figure 13 The second refrigerant flow path 220 is formed on one side heat conduction panel 200-1 and the other side heat conduction panel 200-2 respectively, and is defined as being formed between each of the adjacent plurality of inclined guides 215 except in the thickness direction of the refrigerant flow space 205. However, the third refrigerant flow path 230 is the opposite, and can be defined in the space between the inclined guide 215 formed on one side heat conduction panel 200-1 and the inclined guide 215 formed on the other side heat conduction panel 200-2, which is the thickness direction of the refrigerant flow space 205.

[0194] However, it should be noted that when defining the second refrigerant flow path 220, "except for the thickness direction" means that the direction used as the definition reference is not the thickness direction, and should not be interpreted as excluding the volume occupied by the thickness direction as the corresponding volume and space.

[0195] More specifically, in the third refrigerant flow path 230, where the inclined guide 215 protrudes further into the refrigerant flow space 205 than the second refrigerant flow path 220, the thickness of the refrigerant flow space 205 can be set to be a smaller region than that of the second refrigerant flow path 220. That is, the third refrigerant flow path 230 can be defined by a region with a thickness smaller than that of the second refrigerant flow path 220 through the multiple inclined guides 215.

[0196] Meanwhile, the third refrigerant flow path 230 is defined by multiple inclined guides 215 formed in the face of the heat conduction panel 200-1 and the heat conduction panel 200-2 on one side and the heat conduction panel 200-2 on the other side, which can be defined by mutually spaced parts that are not joined in the refrigerant flow space 205.

[0197] The third refrigerant flow path 230 can function as a gas flow path, facilitating the diffusion and flow of the refrigerant filling the refrigerant flow space 205 into the entire heat sink portion 203 after it undergoes phase transformation into a gaseous refrigerant in the evaporation region of the first refrigerant flow path 210. The gaseous refrigerant evaporated in the first refrigerant flow path 210, which serves as the evaporation region, moves towards the heat sink portion 203 and is smoothly and uniformly dispersed through the third refrigerant flow path 230, thereby enabling condensation while performing heat dissipation.

[0198] For example, when liquid refrigerant flows naturally through the space between the inclined guides 215 adjacent to the second refrigerant flow path 220, gaseous refrigerant flows actively through the third refrigerant flow path 230 in the space not occupied by the liquid refrigerant.

[0199] However, this does not mean that the liquid refrigerant is completely separated from the gaseous refrigerant through the third refrigerant flow path 230 and is not occupied. Rather, it is preferred to understand that the liquid refrigerant flows more actively through the third refrigerant flow path 230 than the gaseous refrigerant.

[0200] That is, the phase change of refrigerant does not completely divide liquid refrigerant and gaseous refrigerant. Although it is difficult to distinguish and define them accurately, in general, for the second refrigerant flow path 220, considering that it is relatively larger in the thickness direction, the second refrigerant flow path 220 is the main flow path of liquid refrigerant, while the third refrigerant flow path 230 can be the main flow path of gaseous refrigerant.

[0201] More specifically, gaseous refrigerants have higher fluidity than liquid refrigerants, so the third refrigerant flow path 230, which has a relatively smaller thickness, is the main flow path; while for liquid refrigerants, their surface tension must be considered, so the second refrigerant flow path 220, which has a relatively larger thickness than the third refrigerant flow path 230, can become the main flow path for liquid refrigerants.

[0202] On the other hand, the third refrigerant flow path 230 can also be defined as a refrigerant flow path that connects the space between the second refrigerant flow paths 220 that are respectively parallel and spaced apart.

[0203] For example, the second refrigerant flow path 220 is processed to protrude from one side heat conduction panel 200-1 and the other side heat conduction panel 200-2 toward the portion where the refrigerant flow space 205 is formed, and can be respectively configured into predetermined graphic shapes to be formed as a division of the third refrigerant flow path 230 in the refrigerant flow space 205 without contacting each other. Of course, it should be noted that the meaning of "division" here does not refer to a complete physical and spatial division, but rather to the distinction in shape and position between the second refrigerant flow path 220 and the third refrigerant flow path 230.

[0204] In a lighting device 100 according to an embodiment of the present invention, which is constructed with the structure described above, according to the heat dissipation unit 200 of the first implementation, the liquid refrigerant condensed in the condensation region other than the evaporation region flows in the direction of gravity along a plurality of inclined guides 215 that define the second refrigerant flow path 220, while the gaseous refrigerant evaporated in the evaporation region flows in the gaseous flow along the gaps between the plurality of inclined guides 215 that define the third refrigerant flow path 230.

[0205] On the other hand, an absorber 300 may also be installed in the evaporation region corresponding to the first refrigerant flow path 210. After absorbing the liquid refrigerant, the absorber 300 promotes the active vaporization of the absorbed liquid refrigerant by the heat provided from the LED unit 150.

[0206] That is, the absorber 300 is disposed on the first refrigerant flow path 210 located near the LED unit 150 or the push-in part 130 which is the object of heat dissipation, and can perform the function of raising the liquid refrigerant in the refrigerant to an upper side higher than the absorption point by capillary force or absorption force.

[0207] Therefore, the absorber 300 can be made of a fibrous material such as nonwoven fabric with multiple pores, and is disposed on the first refrigerant flow path 210 that extends in the vertical direction. It is also preferably made of a material that can disperse and move liquid refrigerant at least to the extent that it can resist gravity in the vertical direction (i.e., the anti-gravity direction) at a predetermined height while being dispersed by capillary phenomenon (or, self-absorption force).

[0208] More specifically, the absorber 300 may comprise any one of the following: a nonwoven fabric forming multiple pores (a liquid-absorbing core structure), a nonwoven fabric supported by metal threads or a metal braid, and a sintered metal body formed by sintering metal powder.

[0209] The metal materials used here include copper, which has excellent thermal conductivity. The nonwoven fabric can be supported by fine copper wires or a copper wire braid made of such wires.

[0210] That is, the absorber 300 can be made of nonwoven fabric made of fibrous material. In this case, the nonwoven fabric material itself is a very soft material, and because the weight of the absorbed liquid refrigerant makes it difficult to maintain its vertical shape when absorbing liquid refrigerant, the nonwoven fabric can be supported by copper wire or a braid made of copper wire.

[0211] Here, the nonwoven fabric is inserted inside the braid of the copper wire material to maintain its shape, thereby performing the function of stably fixing the nonwoven fabric constituting the absorber 300 on the first refrigerant flow path 210 arranged in the direction of gravity (i.e., the up and down direction) or inclined to the direction of gravity to prevent movement.

[0212] However, it does not necessarily have to be a structure in which non-woven fabric is inserted into the braid of copper wire for support. Alternatively, a structure can be used where a single strand of copper wire runs through the non-woven fabric in the vertical direction or where the non-woven fabric is wrapped in a spiral shape.

[0213] Meanwhile, the absorber 300 can be configured such that the nonwoven fabric is incorporated into the braid of copper wire material within a range that can maintain its shape even when subjected to a load containing liquid refrigerant, or the copper wire itself or the braid of copper material can be wrapped in a spiral shape on the outer periphery of the nonwoven fabric.

[0214] On the other hand, when the heat dissipation unit 200 of the first implementation example forms a first refrigerant flow path 210 that is very long in the vertical direction, at least one auxiliary absorber 301 may also be configured in any part of the second refrigerant flow path 220 on the upper side of the refrigerant flow space 205.

[0215] An auxiliary absorber 301 may be installed in an auxiliary absorber mounting section (not shown in the figure), which is modified to have a wider width than a portion of the second refrigerant flow path 220.

[0216] like Figure 11 As shown, two auxiliary absorbers 301 (301-1, 301-2) can be configured as described above, and they can be arranged vertically at intervals on opposite upper sides in the direction of gravity.

[0217] On the other hand, such as Figures 9 to 12 As shown, the heat dissipation unit 200 may also be provided with a ventilation pipe 270 at the end of the heat dissipation plate portion 203. The ventilation pipe 270 is used to evacuate the refrigerant flow space 205 before or after the refrigerant is injected into the refrigerant flow space 205.

[0218] The ventilation duct 270 can be protected from external influences by: after the refrigerant flow space 205 is evacuated as described above, it can be cut by a cutting machine (not shown) and then sealed by a predetermined caulking process, or after the caulking process is completed without cutting, it can be inserted into the placement groove 505 formed in the lower horizontal support rod 500DB in the structure of the finger guard assembly 500 described above.

[0219] Furthermore, as described above, the heat conduction panel 200-1 on one side and the heat conduction panel 200-2 on the other side constituting the heat dissipation unit 200 according to the first embodiment can be configured as a sheet material of SUS (stainless steel) in the metal panel component. Therefore, unlike the case where the metal panel component is made of aluminum, the refrigerant filled inside can be water.

[0220] The reason is as follows: when the material of the metal panel component constituting the heat dissipation unit 200 according to the first implementation example is aluminum, aluminum has the chemical property of generating hydrogen substances and transforming into aluminum oxide when in contact with water. From this point of view, water is excluded from the types of refrigerants that can be used.

[0221] Regarding the heat dissipation effect of the heat dissipation unit 200 made of aluminum material, while relying on the thermal conductivity of the material itself, a higher heat dissipation performance is expected than that of SUS material. However, in the lighting device 100 according to an embodiment of the present invention, the heat dissipation unit 200 is made of metal panel components of SUS material, and a heat conduction method using a phase change material (especially water) that can be filled in the refrigerant flow space 205 is adopted, thereby significantly improving the heat dissipation performance. From this point of view, unlike the lighting device according to the prior art (see background art), there is no need for a separate additional heat dissipation structure for the concentrated heat generation phenomenon in the central part, but the heat dissipation unit 200 of the present invention, which is arranged vertically in the vertical direction, can dissipate heat sufficiently.

[0222] According to the heat dissipation unit 200 of the first embodiment configured for heat dissipation of the lighting device 100 according to an embodiment of the present invention, which is constructed using SUS material with lower thermal conductivity than aluminum, a more active gas-liquid circulation can be achieved by using water as a refrigerant inside without any concern for environmental pollution, and by using a first refrigerant flow path 210, which corresponds to the evaporation area, and a plurality of second refrigerant flow paths 220 configured to supply a uniform flow rate of liquid refrigerant to the first refrigerant flow path 210. This significantly improves the heat dissipation performance and provides the advantage that no separate heat dissipation design is needed to prevent temperature deviations between LED elements 155 densely installed in a small area for performing the function of focused lighting.

[0223] Figure 14This is a perspective view showing the angle adjustment unit in the structure of a lighting device according to an embodiment of the present invention; Figure 15 yes Figure 14 Exploded 3D diagram; Figure 16a and Figure 16b It is a partial projected three-dimensional diagram used to illustrate the operating mode of the tilting rotation and steering rotation of the angle adjustment unit.

[0224] Reference Figures 14 to 16b According to an embodiment of the present invention, the lighting device 100 may further include an angle adjustment unit 600, which is disposed at the lower end of the lighting body 110 and adjusts the illumination direction of the LED unit 150.

[0225] like Figure 14 and Figure 15 As shown, the angle adjustment unit 600 may include: a fixed bracket 610, which fixes the lighting body 110 in a predetermined position; a steering block 620, which rotates left and right about an axis S perpendicular to the fixed bracket 610; and an tilting block 630, which tilts and rotates in the front and back direction through a horizontal coupling axis 635 T parallel to the left and right of the steering block 620, and is connected to the lower end of the lighting body 110.

[0226] Here, the engagement of the steering block 620 with the fixed bracket 610 can be configured such that, when the lower end of the steering block 620 is inserted into the mounting hole 615 of the fixed bracket 610 which is disposed through the vertical direction, it can rotate through the fixed panel 613 attached to the lower part of the fixed bracket 610.

[0227] In the steering block 620, a steering worm gear 622 with a plurality of turbine teeth (not shown) is disposed on a portion of the outer peripheral surface; a steering worm 621 is rotatably disposed on the fixed bracket 610, the steering worm 621 having worm teeth (not shown) that can mesh with the turbine teeth of the steering worm gear 622, thereby engaging with the steering worm gear 622.

[0228] Here, as the axis of the steering worm gear 621 rotates in the lighting body 110, the steering block 620 rotates to the left and right, thereby adjusting the illumination direction of the LED unit 150.

[0229] Meanwhile, a left and right horizontal shaft connecting hole 625 is formed in the steering block 620, which is through the left and right direction. The lower end of the tilting block 630 can be tilted through the left and right horizontal connecting shaft 635 that passes through the left and right horizontal shaft connecting hole 625.

[0230] In addition, in the steering block 620, an inclined worm gear 632 with a plurality of turbine teeth (not shown) is rotatably disposed on a portion of its outer peripheral surface; an inclined worm 631 is rotatably disposed at the lower end of the inclined block 630, the inclined worm 631 having worm teeth (not shown) that can mesh with the turbine teeth of the inclined worm gear 632.

[0231] Here, in the lighting body 110, as the axis of the tilting worm gear 631 rotates, the tilting block 630 tilts and rotates in the forward and backward direction, thereby adjusting the illumination direction of the LED unit 150.

[0232] Bolt fastening holes 633 can be formed in the inclined block 630 for bolt connection with the lower end of the lighting body 110.

[0233] Figure 17 This is a perspective view showing a lighting device according to another embodiment of the present invention; Figure 18a and Figure 18b For explanation Figure 17 The front and rear portions of the finger guard assembly in the structure are partially dissected in a three-dimensional view.

[0234] like Figures 17 to 18b As shown, according to another embodiment of the present invention, the finger guard assembly 500-1 protecting the lighting body 110 and the heat dissipation unit 200 installed for heat dissipation of the lighting body 110 from external influences of the lighting device 100-1 can be provided by, as Figure 3a The finger protection component 500 shown in Figure 5 is implemented in different ways.

[0235] That is, from such Figure 3a As shown in Figure 5, the finger guard assembly 500 is entirely configured in a panel shape, and is composed of, for example, Figures 17 to 18b The finger guard assembly 500-1 shown in another implementation example is the opposite, with a variable configuration in which a portion of the structure is replaced by a support tube 510.

[0236] More specifically, such as Figure 18a and Figure 18b As shown, according to another embodiment, the finger protection panel assembly 500 may include: a left finger protection panel 500L covering the left side of a plurality of heat dissipation units 200; a right finger protection panel 500R covering the right side of a plurality of heat dissipation units 200; a lower horizontal support rod 500DB connected to and supported by the lower ends of the right finger protection panel 500R and the rear finger protection panel 500P; and an upper horizontal support rod 500UB connected to and supported by the upper ends of the left finger protection panel 500L, the right finger protection panel 500R, and the rear finger protection panel 500P.

[0237] In the structure of the finger protection panel assembly 500-1 according to another implementation example, the left finger protection panel 500L and the right finger protection panel 500R can be implemented with the same panel shape as the left finger protection panel 500L and the right finger protection panel 500R of the finger protection panel assembly 500 of the above-described implementation example. The lower horizontal support rod 500DB and the upper horizontal support rod 500UB are connected to the lower end and the upper end of the left finger protection panel 500L and the lower end and the upper end of the right finger protection panel 500R respectively in the left and right horizontal directions for support.

[0238] However, according to another embodiment, the finger guard assembly 500-1 does not require separate configuration of the upper finger guard panel 500T and the rear finger guard panel 500P in the structure of the finger guard assembly 500 of the above embodiment. Instead, it also includes a plurality of support tubes 510 arranged horizontally in the left-right direction. The plurality of support tubes 510 are connected at least two locations at the upper ends of the left finger guard panel 500L and the right finger guard panel 500R in the front-back direction and are connected at multiple locations at the rear ends of the left finger guard panel 500L and the right finger guard panel 500R in the up-down direction.

[0239] Alternatively, the lower horizontal support rod 500DB can be extended in the left and right direction to form a slot 505 for accommodating the ventilation pipe 270 in the structure of the heat dissipation unit 200.

[0240] According to an embodiment of the present invention, a lighting device 100 constructed with the structure described above provides the following advantages: not only does it eliminate the phenomenon of heat generated from the LED unit 150 concentrating in the central portion, but also, as a refrigerant phase change method that maximizes heat dissipation efficiency, effective heat dissipation can be performed by the heat dissipation unit 200 having multiple heat-conducting panel bodies 200 made of SUS material without changing the structure.

[0241] Figure 19 This is a top perspective view showing a lighting device according to another embodiment of the present invention; Figure 20 This is a perspective view showing an example of the use of a lighting device according to another embodiment of the present invention; Figure 21 This is a bottom perspective view showing a lighting device according to another embodiment of the present invention; Figure 22a and Figure 22b It is to utilize Figure 19 and Figure 21 Top and bottom exploded perspective views of the combined form of the electronic component storage rack and the inclined support in the structure. Figure 23a and Figure 23b It is shown Figure 19 and Figure 21 3D diagram of the front and rear sections of the electronic component storage rack in the structure; Figure 24aand Figure 24b It is shown Figure 19 and Figure 21 The front and rear portions of the finger guard assembly in the structure are partially dissected in a three-dimensional view.

[0242] like Figures 19 to 24b As shown, a lighting device 1000 according to another embodiment of the present invention includes an LED unit 1150 and a heat dissipation unit 1200 according to a second implementation. The LED unit 1150 is protected from external influence by a finger guard assembly 1500, which is formed in a box shape (or hexahedron) excluding the lower surface.

[0243] The lighting device 1000 according to another embodiment of the present invention differs from the lighting device 100 according to one embodiment of the present invention as follows: the lighting device 100 of the one embodiment is configured to allow light irradiated from the LED unit 150 to pass directly through the light-transmitting panel 120 to form a focused lighting pattern requiring concentrated light distribution, while the lighting device 1000 of the other embodiment employs a color-rendering reflector (refer to the reflector panel 1112 described later) to improve the light distribution efficiency of light irradiated from the somewhat small LED unit 1150.

[0244] The LED unit 1150 may also be configured to a different specification from the lighting device 100 according to one embodiment of the present invention, which is used as a spotlight. However, the lighting device 1000 according to another embodiment of the present invention can also be understood as a necessary structure of a general lighting device, which functions to produce a predetermined light from multiple LED elements and illuminate the user in the desired direction when a power source is supplied.

[0245] On the other hand, the heat dissipation unit 1200 according to the second implementation example dissipates heat generated by the LED unit 1150 by rapidly exchanging heat with the external air (outer air), thereby not only improving the light distribution performance of the LED unit 1150, but also improving its durability.

[0246] like Figure 19 and Figure 20 As shown, the lighting device 1000 according to another embodiment of the present invention, as described above, can be installed in the place where lighting is required by means of a pair of electronic component storage racks 1700 and a tilting bracket portion 1600 via a support column (not shown). The pair of electronic component storage racks 1700 are combined to surround the right side and left side rear end and back side of the outer side of the finger guard assembly 1500. The tilting bracket portion 1600 is fixed to the pair of electronic component storage racks 1700 and is combined to tilt and rotate the entire finger guard assembly 1500 about the left and right horizontal axes.

[0247] Here, since the heat released by the heat dissipation unit 1200 housed inside the second embodiment is relatively high, the finger guard assembly 1500 is a safety structure that can protect installation personnel (or users) from injuries such as burns from high temperatures. In addition, the finger guard assembly 1500 prevents surrounding structures from directly contacting the heat dissipation unit 1200 of the second embodiment, thereby performing the function of protecting against external influences.

[0248] More specifically, such as Figure 24a and Figure 24b As shown, the finger protection plate assembly 1500 is a hexahedral shape made of 5 panels, configured to cover the remaining part except for the lower surface which is the direction of light irradiation by the LED unit 1150. A pair of electronic component storage racks 1700 are respectively attached to the left and right side portions of the finger protection plate assembly 1500, and the two ends of the inclined support portion 1600 respectively pass through the pair of electronic component storage racks 1700 and can be attached to the left and right side portions of the finger protection plate assembly 1500.

[0249] Here, as Figure 21 a to Figure 21 As shown in b, a pair of electronic component storage racks 1700 may include: a right storage rack 1700R, fixed to the right side of the finger protection plate assembly 1500; and a left storage rack 1700L, fixed to the left side of the finger protection plate assembly 1500.

[0250] The following describes the identical structure of a pair of electronic component storage racks 1700, except for the engagement point with the finger guard assembly 1500. Figure 22a and Figure 22b As shown, the description focuses on the 1700R electronic component storage rack on the right, while the description of the 1700L electronic component storage rack on the left is omitted.

[0251] The right-side electronic component storage rack 1700R may include a storage rack body 1710, which is generally bent into a " The shape is such that it is in close contact with the back of the finger guard assembly 1500 and the right side of the finger guard assembly 1500.

[0252] In the storage rack body 1710, the portion corresponding to the back side of the finger protector assembly 1500 is roughly formed into a right-angled hexahedron shape, and a first electronic component storage section 1705-1 can be disposed inside it. Meanwhile, in the storage rack body 1710, the portion corresponding to the right side of the finger protector assembly 1500 is roughly formed into a panel shape with thin left and right sides, and a second electronic component storage section 1705-2 can be disposed inside it.

[0253] The first electronic component storage section 1705-1 is generally configured as a rectangular hexahedral empty space. A power cord (not shown) is connected to the first electronic component storage section 1705 via an external connection terminal 1790. An internal wire (not shown) energized by the power cord can extend to the second electronic component storage section 1705-2. The first electronic component storage section 1705-1 can be shielded by the first storage section cover 1720.

[0254] On the other hand, an electronic PCB 1750 can be built inside the second electronic component storage section 1705-2. In order to prevent the penetration of external moisture, the electronic PCB 1750 can be sealed by a built-in waterproof film 1740, and the second electronic component storage section 1705-2 can be covered by a second receiving section cover 1730.

[0255] As described above, the right electronic component storage rack 1700R has storage rack through holes 1715 formed at multiple locations (4 locations) along the edge of the frame. Multiple fixing screws 1717 passing through the storage rack through holes 1715 can be fixed to the screw panel fastening holes 1515 formed on the right finger protection panel 1500R, which is described later, on the right side of the corresponding finger protection panel assembly 1500.

[0256] At the same time, such as Figure 22a and Figure 22b As shown, a pair of through holes 1719 for fixing the tilt bracket 1600 are formed on the right side of the electronic component storage rack 1700R. A central fixing bolt 1770-2 that performs the function of a central hinge for tilting rotation is provided through one of the through holes 1719. A hinge fixing bolt 1770-1 is provided through the other of the through holes 1719. The hinge fixing bolt 1770-1 is formed through the tilting rotation guide groove 1625 of the tilt bracket 1600.

[0257] like Figure 22a and Figure 22b As shown, the tilting bracket 1600 may include: a fixing panel 1610, a mounting structure fixed to a support column (not shown); a right connecting panel 1621 and a left connecting panel 1622, which extend from the left and right ends of the fixing panel 1610 and are respectively connected to the right and left sides of the finger protection plate assembly 1500 via the right electronic component storage rack 1700R and the left electronic component storage rack 1700L.

[0258] Here, the front ends of the right connecting panel 1621 and the left connecting panel 1622 are formed into a circular panel shape (refer to reference numeral 1623), and the aforementioned inclined rotation guide groove 1625 can be formed therein.

[0259] As described above, the tilting bracket 1600 performs a function similar to the angle adjustment unit 600 in the structure of the lighting device 100 according to an embodiment of the present invention. In the embodiment 100 of the present invention, the angle adjustment unit 600 adjusts the lighting body 110 by tilting and rotating back and forth and turning left and right to adjust the direction of light illumination. However, the tilting bracket 1600 in the lighting device 1000 according to another embodiment of the present invention is the opposite. The difference is that the lighting body 1100 is adjusted by tilting and rotating back and forth, and the tilting bracket 1600 itself is fixed after turning left and right, thereby adjusting the direction of light illumination.

[0260] Here, a fixing end 1612 is formed in the middle part of the fixing panel 1610 in the shape of a semi-circular panel for fixing to the mounting structure such as the support column. A bolt fixing hole 1611 and a steering guide groove 1613 are formed in the fixing end 1612. The bolt fixing hole 1611 is used to fix the support column with a fixing bolt (not shown), and the steering guide groove 1613 is used to fasten the steering guide bolt (not shown) for steering rotation.

[0261] On the other hand, in the electronic PCB 1750 built into the second electronic component storage section 1705-2 of the right electronic component storage rack 1700R and the left electronic component storage rack 1700L, a pair of power pin contacts 1756 are arranged. In the finger protection plate assembly 1500 of the right electronic component storage rack 1700R and the left electronic component storage rack 1700L, a pair of power pins 1560 extending outward can be formed on the right finger protection panel 1500R and the left finger protection panel 1500L, so that the aforementioned pair of power pin contacts 1756 can be connected to the power supply.

[0262] like Figure 20 As shown in (a), the pair of electronic component storage racks 1700 constructed with the structure described above may be formed with different lengths in the front and rear directions, and second electronic component storage sections 1705-2 may be formed at two intervals (see reference). Figure 20 The reference numerals 1700R1 and 1700R2 are used to indicate two lighting devices 1000A and 1000B that are arranged consecutively in the front and rear directions when connected in one go.

[0263] In addition, such as Figure 20 As shown in (b), a pair of electronic component storage racks 1700 may have a second electronic component storage section 1705-2 formed at three intervals. Figure 20 The reference numerals 1700R1, 1700R2, and 1700R3 are used to connect three lighting devices 1000A, 1000B, and 1000C that are arranged consecutively in the front and rear directions in a single connection.

[0264] However, as Figures 22a to 24b As shown, it is not necessary for the pair of electronic component storage racks 1700 to be configured to protrude outwards from the left finger protection panel 1500L and the right finger protection panel 1500R or the rear finger protection panel 1500P as described later. In another implementation example described later, it is also possible to attach them to the interior of either the left finger protection panel 1500L or the right finger protection panel 1500R in an embedded manner.

[0265] The specific structure and assembly of the electronic component storage rack 1700-1, implemented by another example, will be described in more detail later.

[0266] The finger guard assembly 1500 has a hexahedral shape excluding the lower face which is the light irradiation direction of the LED unit 1150, and more specifically, it can be composed of a combination of the following specific structures.

[0267] That is, such as Figure 24a and Figure 24b As shown, the finger protection panel assembly 1500 may include: a rear finger protection panel 1500P, which forms the rear appearance in the aforementioned hexahedral shape; an upper finger protection panel 1500U, which forms the upper appearance; a front finger protection panel 1500F, which forms the front appearance; and the aforementioned right finger protection panel 1500R and left finger protection panel 1500L.

[0268] Additionally, the finger protection panel assembly 1500 may also include: a rear lower panel rod 1500PD, which is attached to the lower end of the rear finger protection panel 1500P to form a frame; a rear upper panel rod 1500PU, which serves as a medium connecting the upper end of the rear finger protection panel 1500P to the rear end of the upper finger protection panel 1500U; a front upper panel rod 1500FU, which serves as a medium connecting the front end of the upper finger protection panel 1500U to the upper end of the front finger protection panel 1500F; and a front lower panel rod 1500FD, which is attached to the lower end of the front finger protection panel 1500F to form a frame.

[0269] Here, screw fastening holes (without reference numerals) can be formed at the left and right ends of each panel rod 1500PD, 1500PU, 1500FU, and 1500FD of the finger protection panel assembly 1500. These screw fastening holes are used for screw engagement by fixing screws 1550 that pass through the screw through holes (without reference numerals) of the right finger protection panel 1500R and the left finger protection panel 1500L.

[0270] Meanwhile, screw fastening holes (without reference numerals) can be formed in each panel rod 1500PD, 1500PU, 1500FU, and 1500FD of the finger protection plate assembly 1500, so that multiple panel fixing screws 1550 can pass through the screw through holes (without reference numerals) formed at the ends of each frame of the panel of the finger protection plate assembly 1500 for fastening.

[0271] On the other hand, in each panel of the finger guard assembly 1500, a plurality of vent holes 1505 for the inflow of external air (external air) and the discharge of internal air (internal air) can be formed in a slot shape (or a grid shape). However, the plurality of vent holes 1505 do not necessarily have to be formed in a slot shape, but can also be formed in a round hole shape.

[0272] Preferably, in the structure of the finger protection panel assembly 1500, the right finger protection panel 1500R and the left finger protection panel 1500L, which are part of the structure of the heat dissipation unit 1200 described later, are not occupied by one side heat conduction panel 1200-1 and the other side heat conduction panel 1200-2. Multiple ventilation holes 1505 are formed only in the part that smoothly supplies external air to the air supply section 1800 described later. In addition, multiple ventilation holes 1505 in the shape of a grid are formed on the entire area of ​​the remaining rear finger protection panel 1500P, upper finger protection panel 1500U and front finger protection panel 1500F.

[0273] On the other hand, a DC PCB housing 1580 can be configured on the inner side of the right finger protection panel 1500R and the left finger protection panel 1500L. The DC PCB housing 1580 has a built-in DC connection PCB, which is used to electrically connect to the electronic PCB 1750 built into the right electronic component storage rack 1700R and the left electronic component storage rack 1700L in the structure of a pair of electronic component storage racks 1700.

[0274] Meanwhile, on the outer surfaces of the right finger protection panel 1500R and the left finger protection panel 1500L, an angle display section 1509 can be printed on the outside to indicate the tilt rotation angle of the tilt support section 1600.

[0275] On the other hand, multiple screw through holes (not shown in the figure) are formed on the right finger protection panel 1500R and the left finger protection panel 1500L for fixing the heat dissipation unit 1200, the lighting body 1100 and the air supply part 1800 installed inside, and the structure can be fixed by multiple fixing screws 1507 passing through the multiple screw through holes.

[0276] Here, the finger guard assembly 1500 is not necessarily as described. Figures 4a to 6As shown in b, the front finger protection panel 1500F, the upper finger protection panel 1500U, and the rear finger protection panel 1500P are configured in a grid shape to prevent burns to workers.

[0277] That is, the lighting device 1000-1 according to another embodiment of the present invention, as described later, is usually installed at a high position such as a support column (not shown) when it is running with heat. Therefore, there is almost no need to prevent workers from being burned. From this point of view, in order to make the external air circulate more actively in the internal heat dissipation unit 1200, a part of the structure can of course be replaced by the support tube 1500C-P described later.

[0278] The structural replacement using the 1500C-P support tube will be explained in more detail later.

[0279] At the same time, such as Figure 24a As shown, the lighting device 1000 according to an embodiment of the present invention may further include a light shield 1900, which improves the diffusion of light irradiated from the LED unit 1150.

[0280] The light shield 1900 can be configured to allow the front end to pass through the front end of the lighting body 1110 and the lower end of the front finger protection panel 1500F in a downwardly inclined straight direction.

[0281] More specifically, the light shield 1900 is inclined so that its front end protrudes forward and downward at least lower than the surface of the transmissive window panel 1120 that forms the lower surface of the lighting body 1110, and the amount of light diffusion from the LED unit 1150 can be adjusted according to the amount of downward protrusion of the front end of the light shield 1900.

[0282] Although not shown here, the right finger protection panel 1500R and the left finger protection panel 1500L may also be configured with a light-shielding guide structure (not shown) for guiding the movement of the light shield 1900.

[0283] For reference, after the shape of the vent 1505 formed on the right finger protection panel 1500R and the left finger protection panel 1500L is formed to be the same as the movement path of the light shield 1900, the front end position of the light shield 1900 can be adjusted by threading and loosening the light shield 1900 with respect to the vent 1505.

[0284] Figure 25a and Figure 25b This is a perspective view showing the front and rear portions of a lighting device according to another embodiment of the present invention; Figure 26a and Figure 26b It is shown by Figure 25a and Figure 25bAnother implementation example of the structure is shown in the three-dimensional diagram of the front and rear parts of the electronic component storage rack; Figure 27a and Figure 27b It is shown by Figure 25a and Figure 25b Another implementation example of the structure is shown in the three-dimensional diagram of the front and rear parts of the finger guard assembly.

[0285] like Figures 25a to 27b As shown, the lighting device 1000-1 according to another embodiment of the present invention may include an electronic component storage rack 1700' of another embodiment and a finger guard assembly 1500-1 of another embodiment.

[0286] First, such as Figures 25a to 26b As shown, according to another embodiment, the electronic component holder 1700' is attached in an embedded form to the interior recess of either the left finger protection panel 1500L or the right finger protection panel 1500R. Here, the electronic component holder 1700' according to another embodiment is illustrated with the figure installed on the right finger protection panel 1500R, but it can of course also be installed on the left finger protection panel 1500L.

[0287] More specifically, according to another embodiment, the electronic component storage rack 1700' may include: a storage rack body 1701', an electronic component storage portion 1705' formed in an embedded form inside an insertion hole (not shown in the figure) formed on the right finger protection panel 1500R; a terminal fixing portion 1702' formed on the storage rack body 1701' and configured for signal connection of a pair of connection terminals 1790' described later; and a storage portion cover 1703', which is combined to cover the electronic component storage portion 1705' of the storage rack body 1701' from the outside.

[0288] Meanwhile, a pair of terminal fixing parts 1702' are arranged vertically at intervals on the inner side of the rear portion constituting the electronic component storage portion 1705', and a pair of connecting terminals 1790' (not shown) can be fixed to a power cord by the pair of terminal fixing parts 1702'.

[0289] Reference Figure 23a and Figure 23b In the case of the described electronic component storage rack 1700, one left electronic component storage rack 1700L and one right electronic component storage rack 1700R are respectively arranged on the left finger protection panel 1500L and the right finger protection panel 1500R. However, the electronic component storage rack 1700' according to another embodiment is the opposite. The difference is that it is only formed on the right finger protection panel 1500R. The power cord can be fixed by a pair of terminal fixing parts 1702' of the electronic component storage part 1705' of the right finger protection panel 1500R, which is centrally arranged without distinguishing between the input side and the output side.

[0290] Furthermore, in the case of the electronic component storage rack 1700' in another implementation example, compared with the reference... Figure 23a and Figure 23b Unlike the previously described electronic component storage rack 1700, since the structure corresponding to the electronic component storage section 1705' is formed inside the right-side finger protection panel 1500R, it not only minimizes interference when the tilt support section 1600 is tilted and rotated, but also prevents an increase in the overall volume of the product in the left and right directions.

[0291] On the other hand, such as Figure 25a and Figure 25b and Figure 27a and Figure 27b As shown, according to another implementation, the finger guard assembly 1500-1 can be implemented such that a plurality of support tubes 1500C-P replace the panel shape configured to protect the lighting body 1110 and the heat dissipation unit 1200 installed for heat dissipation of the lighting body 1110 from external influences. Figures 1 to 6 Part of the structure of b (e.g., front finger protection panel 1500F, upper finger protection panel 1500U, and rear finger protection panel 1500P).

[0292] More specifically, such as Figures 25a to 27b As shown, according to another embodiment, the finger protection panel assembly 1500-1 may include: a left finger protection panel 1500L covering the left side of a plurality of heat dissipation units 1200; a right finger protection panel 1500R covering the right side of a plurality of heat dissipation units 1200; and a plurality of support tubes 1500C-P configured to be connected horizontally at predetermined distances along the front, upper and rear ends of the left and right finger protection panels 1500L and 1500R, excluding the lower ends of each of the left and right finger protection panels 1500L and 1500R.

[0293] Screw fastening holes 1508 can be formed at both ends of the multiple support tubes 1500C-P, so that multiple panel fixing screws 1509 can pass through the left finger protection panel 1500L and the right finger protection panel 1500R from the outside to fasten them.

[0294] On the other hand, one of the multiple support tubes 1500C-P can be replaced by a horizontal support rod 1500E, which has a mounting groove 1503 to accommodate the ventilation tube 1270 in the structure of the heat dissipation unit 1200 described later.

[0295] The two ends of the horizontal support rod 1500E are supported and attached to the inner sides of the left finger protection panel 1500L and the right finger protection panel 1500R, respectively, and the ventilation pipe 1270 of the heat dissipation unit 1200 is protected from external influence, thereby preventing damage to the rearward protruding ventilation pipe 1270 caused by movement or external force.

[0296] Here, multiple support tubes 1500C-P can be configured to narrow the spacing between adjacent identical structures to prevent burns to workers. However, since the lighting devices 1000, 1000-1 according to the invention are generally installed at a high place, such as on a pillar (not shown) in a place where lighting is required, the necessity to prevent burns to workers is reduced. Therefore, they can be designed to be spaced at sufficient distances to further improve the heat exchange between the heat dissipation unit 1200 and the outside air.

[0297] Figure 28a and Figure 28b It is shown in Figure 19 and Figure 21 Top and bottom perspective views of the structure, excluding the finger guard assembly; Figure 29a and Figure 29b yes Figure 28a and Figure 28b An exploded 3D diagram.

[0298] like Figures 28a to 29b As shown, a lighting device 1000 according to another embodiment of the present invention may include: an LED unit 1150, which is integrated into the interior of a finger guard assembly 1500 via a lighting body 1110; and a heat dissipation unit 1200 according to a second implementation, which receives heat generated from the LED unit 1150 and releases the heat.

[0299] Here, the lighting body 1110 may include: a bracket frame portion 1111, which is generally configured as a quadrilateral frame shape and extends through in the vertical direction; a mounting panel 1113, which is curved and extended at the rear end of the bracket frame portion 1111 and is surface-contactly coupled to the LED plate mounting block 1151 described later; a reflective panel 1112, which connects the front end of the bracket frame portion 1111 and the upper end of the mounting panel 1113 and reflects light irradiated from the plurality of LED elements 1155 described later; and a transmission window panel 1120, which is configured to shield the opening of the bracket frame portion 1111 and is made of a transparent or translucent material so that light irradiated from the LED elements 1155 or light reflected by the reflective panel 1112 can pass through.

[0300] A screw assembly frame 1115 may also be configured on the back of the mounting panel 1113. This screw assembly frame 1115 serves as a medium for screwing the LED board mounting block 151. The LED board mounting block 151 can be fixed to the mounting panel 1113 of the lighting body 1110 by multiple assembly screws 1116 passing through from the rear to the front, forming screw through holes 1115h in the screw assembly frame 1115.

[0301] The bracket frame 1111 can be fixed to the inside of the finger protection plate assembly 1500 by a plurality of fixing screws 1507.

[0302] On the other hand, an air supply unit 1800 can also be provided inside the enclosure of the illuminated main body 1110 and the finger guard assembly 1500.

[0303] The air supply unit 1800 can perform the function of promoting the circulation of hot air (internal air) released through the heat dissipation unit 1200 (described later) and external air drawn in through the vents 1505 of the front finger protection panel 1500F, the right finger protection panel 1500R, and the left finger protection panel 1500L in the finger protection panel assembly 1500.

[0304] The air supply unit 1800 described above may include: a panel mounting bracket 1810; a fan mounting bracket 1820 connected to the panel mounting bracket 1810 and serving as a medium for mounting the air supply fan 1830 (described later); and at least one air supply fan 1830 fixed to the fan mounting bracket 1820 and configured with a plurality of electrically driven blowers.

[0305] Meanwhile, the air supply unit 1800 operates on the lower side relative to gravity in the heat dissipation unit 1200 described later to form an airflow to the upper side or the upper rear side, so that the hot air released through the heat dissipation unit 1200 can achieve faster internal airflow and external airflow through the rear finger protection panel 1500P with grid-shaped vents 1505, the upper finger protection panel 1500U forming the upper appearance, and the front finger protection panel 1500F forming the front appearance.

[0306] For reference, the heat dissipation unit 1200 according to the second implementation example is configured as a plate heat exchange type (plate heat exchanger) and is arranged at predetermined distances in the left and right directions inside the finger protection plate assembly 1500.

[0307] At this time, it is preferable that the air supply direction of the air supply unit 1800 is set as follows: outside air enters through the vents 1505 of the front finger protection panel 1500F, the right finger protection panel 1500R and the left finger protection panel 1500L, and then exhausts through the rear finger protection panel 1500P on the rear side between the heat dissipation units 1200 arranged at predetermined distances in the left and right directions.

[0308] Figure 30a and Figure 30b It is shown in Figure 28a and Figure 28b Top-view and bottom-view perspective views of the structure, excluding the main lighting unit and the air supply unit. Figure 31a and Figure 31b As Figure 30a and Figure 30b The exploded 3D view of each is an exploded 3D view of the LED unit; Figure 32a and Figure 32b It is shown in Figure 30a and Figure 30b The structure includes front and rear perspective views of a single heat dissipation unit combined with an LED unit. Figure 33a and Figure 33b yes Figure 32a and Figure 32b An exploded 3D diagram.

[0309] like Figures 30a to 33b As shown, the LED unit 1150 may include an LED board mounting block 1151, which is composed of a metal plate for mounting a plurality of LED elements 1155.

[0310] However, according to the embodiment, the LED unit 1150 does not necessarily have to be composed of a metal material plate on which the LED element 1155 is directly mounted on the LED board mounting block 1151. Rather, it can of course be configured as a panel of a common heat-transferable metal component, and the LED board 1152 (see below) is composed of a separate metal material plate. Figure 39 The LED components 1155 are installed and heat is transferred through the LED board mounting block 1151.

[0311] At the same time, as will be described later Figure 40 and Figure 41 As shown, in order to install the LED unit 2150, it is not necessary to configure the LED board mounting block 1151. Instead, the LED unit 2150 can be installed in direct contact with the mounting panel 2113, which is integral with the rear end of the lighting body 2110. The mounting panel 2113 can be used as a medium for heat transfer.

[0312] On the other hand, as described above, multiple heat dissipation units 1200 combined and fixed to a single LED unit 1150 that extends in the left-right direction can form a module.

[0313] At the same time, such as Figure 33a and Figure 33b As shown, the heat dissipation unit 1200 according to the second implementation example may further include a plurality of heat transfer medium blocks 1130, which are disposed between the LED unit 1150 and the press-in end 1201 of the heat dissipation unit 1200 described later, and receive heat from the LED unit 1150 and transfer it to the heat dissipation plate portion 1203 of the heat dissipation unit 1200 described later.

[0314] Figures 34a to 34c yes Figure 19 A three-dimensional view of the heat dissipation unit in the second implementation example of the structure from various directions; Figures 35a to 35c yes Figures 34a to 34c Exploded 3D diagram; Figure 36a yes Figure 34a Side view (a), cross-sectional view taken along line AA (b), and enlarged view (c); Figure 36b yes Figure 34a Side view (a), perspective view of the cut along line AA (b), and enlarged view of the cut (c); Figure 37a It is along Figure 19 A vertical cross-section taken from the BB line; Figure 37b It is along Figure 19 A 3D view of the cut taken from the BB line.

[0315] like Figures 34a to 37b As shown, the plurality of heat dissipation units 1200 according to the second implementation example may each include a refrigerant flow space 1205 filled with refrigerant.

[0316] Here, the refrigerant flow space 1205 includes: a first refrigerant flow path 1210, which forms a press-in end 1201 as the bonding part of the LED unit 1150, such that the press-in end 1201 is located on the lower side relative to the direction of gravity, and can evaporate the liquid refrigerant stored in the refrigerant inside; and a second refrigerant flow path 1220, which communicates with the first refrigerant flow path 1210, and extends integrally to the upper side relative to the direction of gravity, and forms a heat dissipation plate portion 1203 to diffuse and condense the gaseous refrigerant that has changed from the liquid refrigerant phase.

[0317] At this time, the portion of the refrigerant flow space 1205 located on the lower side relative to the direction of gravity, which includes the portion of the press-in end 1201 where the first refrigerant flow path 1210 is formed, can be defined as the evaporation region (without reference numerals); the portion of the refrigerant flow space 1205 located on the upper side relative to the direction of gravity, other than the evaporation region, can be defined as the condensation region (without reference numerals).

[0318] However, the terms "evaporation region" and "condensation region" are merely functional structural designations used to differentiate the phase change of the refrigerant. They do not fully distinguish between regions where refrigerant evaporation (i.e., the phase change from liquid to gaseous refrigerant) or refrigerant condensation (i.e., the phase change from gaseous to liquid refrigerant). Therefore, specific component reference numerals are not indicated in the accompanying drawings.

[0319] Additionally, as described below, the evaporation zone can be defined by the portion adjacent to the press-in end 1201, that is, the portion directly connected to the heat transfer medium block 1130 or the aforementioned LED board mounting block 1151, which serves as a medium for transferring heat generated from the LED unit 1150, while the condensation zone can be defined by all other portions except the evaporation zone.

[0320] In the case of the heat dissipation unit 200 in the first embodiment, the side of the vertically pressed end 201 where the first refrigerant flow path 210 is disposed is defined as the evaporation region, and the other part, which corresponds to the evaporation plate portion 203, is defined as the condensation region. However, the heat dissipation unit 1200 in the second embodiment is the opposite. The difference is that, as the part that mainly stores liquid refrigerant, the part of the refrigerant flow space 1205, which includes the entire part of the first refrigerant flow path 1210 located relatively lower in the direction of gravity, is defined as the evaporation region. As the part that mainly diffuses gaseous refrigerant or condenses gaseous refrigerant, the part of the refrigerant flow space 1205, which includes the part of the second refrigerant flow path 1220 or the third refrigerant flow path 1230 located relatively upper in the direction of gravity, is defined as the condensation region.

[0321] The refrigerant flow space 1205 that constitutes the evaporation zone and condensation zone as described above can be formed by joining at least one metal panel component made of SUS (stainless steel) material together.

[0322] On the other hand, the lighting device 1000 according to an embodiment of the present invention may further include a lighting body 1110 that serves as a medium for mounting LED units 1150.

[0323] Here, the heat dissipation unit 1200 according to the second implementation example may also include a heat transfer medium block 1130, which is disposed between the heating surface of the LED unit 1150 and the press-in end 1201 on which the first refrigerant flow path 1210 is disposed, and receives heat from the LED unit 1150 and transfers it to the press-in end 1201.

[0324] At this time, a portion of the press-in end 1201, which is provided with the first refrigerant flow path 1210, is formed to be open to communicate with the refrigerant flow space 1205. The heat transfer medium block 1130 can be used to cover the aforementioned open press-in end 1201.

[0325] Here, depending on the thickness of the LED board mounting block 1151 of the LED unit 1150, the heat transfer medium block 1130 can be manufactured in two types with different thicknesses (see reference). Figure 31a and Figure 31b (See attached figures 1130-1 and 1130-2).

[0326] In addition, multiple heat transfer medium blocks 1130 are manufactured with the same shape and thickness and are configured to have their surfaces in thermal contact with the back of the LED board mounting block 1151. The number of heat transfer medium blocks 1130 can correspond to the number of individual heat dissipation units 1200.

[0327] As described above, the heat transfer medium block 1130 supports the refrigerant flow space 1205 in a shielded state while being attached to the press-in end 1201 side where the first refrigerant flow path 1210 is configured. At the same time, in order to facilitate the transfer of heat from the LED unit 1150 to the evaporation area side, when attached to the insertion end 1201M formed on the press-in end 1201 side, the front end protrudes into the refrigerant flow space 1205 by a predetermined length, so as to contact the liquid refrigerant stored in the refrigerant flow space 1205 on the side of the first refrigerant flow path 1210.

[0328] Therefore, a concave-convex portion 1135 can also be formed at the front end of the heat transfer medium block 1130. The concave-convex portion 1135 is formed by repeatedly alternating concave portions and protrusions in one direction.

[0329] The concave and convex portions 1135 are formed by repeated alternation of recesses and protrusions, which actually increases the area in contact with the liquid refrigerant on the evaporation region side, thereby further increasing the heat transfer surface area and effectively increasing the evaporation rate of the liquid refrigerant.

[0330] Therefore, one side of the multiple heat dissipation units 1200 is in contact with the heating surface of the LED unit 1150, while the other side uses the heat transfer medium block 1130 as a medium to receive the heat from the LED unit 1150. The heat transfer medium block 1130 is formed with the protrusions and recesses 1135 that are in thermal contact with the refrigerant flow space 1205.

[0331] However, it is not always necessary to configure the heat transfer medium block 1130, as described below. Figure 38 and Figure 39 In another embodiment of the present invention, the heat dissipation unit 1200' is formed as a pointed end 1201 at the edge of the frame, and can also be directly pressed into the insertion slot 1157 formed in the LED board mounting block 1151. From this point of view, it is not necessary to configure the heat transfer medium block 1130 in this case.

[0332] For reference, in order to stably fix the heat dissipation unit 1200' to the insertion groove 1157 formed on the LED board mounting block 1151, after the above-described press-fit installation, the heat dissipation unit 1200' is welded together along the part where the insertion groove 1157 contacts the press-fit end 1201 of the heat dissipation unit 1200', thereby preventing refrigerant leakage.

[0333] On the other hand, the heat dissipation unit 1200 according to the second implementation example is composed of two metal panel components, which may include: a side heat conduction panel 1200-1, having a predetermined thermal conductivity, and forming portions corresponding to the first refrigerant flow path 1210 and the second refrigerant flow path 1220 during sheet metal processing by stamping die process; and a other side heat conduction panel 1200-2, having the same thermal conductivity as the side heat conduction panel 1200-1, and forming portions corresponding to the first refrigerant flow path 1210 and the second refrigerant flow path 1220 during sheet metal processing by stamping die process.

[0334] Meanwhile, the heat dissipation unit 1200 according to the second implementation example may also form a strength reinforcement part 1240, which is formed by protruding from one side heat conduction panel 1200-1 and the other side heat conduction panel 1200-2 toward the refrigerant flow space 1205.

[0335] Here, when multiple strength reinforcement parts 1240 are joined to the edge of two metal panel components (i.e., one side heat conduction panel 1200-1 and the other side heat conduction panel 1200-2) made of SUS material through a joining process, the multiple strength reinforcement parts 1240 facing each other on one side heat conduction panel 1200-1 and the other side heat conduction panel 1200-2 are joined together and protruded to the refrigerant flow space 205 side where liquid refrigerant and gaseous refrigerant flow.

[0336] In terms of strengthening the rigidity of the heat conduction panel 1200-1 on one side and the heat conduction panel 1200-2 on the other side, compared with the usual flat formation, the multiple strength-enhancing parts 1240 increase the shear stress by using the sheet metal mold processing on the refrigerant flow space 205 side. In terms of the gas-liquid circulation of the refrigerant filling the refrigerant flow space 205, the contact area with the refrigerant (especially the gaseous refrigerant) is increased, thereby enabling active condensation and thus promoting gas-liquid circulation.

[0337] At this time, the multiple strength reinforcement sections 1240 are configured in the shape of small dots, and may include multiple lower reinforcement sections 1240-1 and multiple upper reinforcement sections 1240 (the same as ordinary strength reinforcement sections). The multiple lower reinforcement sections 1240-1 are formed at the location of the first refrigerant flow path 1210 (evaporation region), and the multiple upper reinforcement sections 1240 are formed at the location of the second refrigerant flow path 1220 (condensation region).

[0338] Here, the upper reinforcing portion 1240 formed in the condensation region can be formed relatively densely throughout the entire condensation region, while the lower reinforcing portion 1240-1 formed in the evaporation region can be arranged at intervals to make the density lower than that of the upper reinforcing portion 1240 formed in the condensation region.

[0339] As described above, the reasons for setting different densities for the multiple strength-enhancing sections 1240 formed in the condensation region and the evaporation region are as follows.

[0340] First, considering that the multiple upper reinforcing parts 1240 formed in the condensation area are relatively densely formed throughout the entire condensation area, the second refrigerant flow path 1220 and the third refrigerant flow path 1230, which will be described later in the refrigerant flow space 1205, are also densely formed. Therefore, it is possible to appropriately prevent the shaking (movement) between the heat conduction panel 1200-1 on one side and the heat conduction panel 1200-2 on the other side due to changes in internal pressure during the gas-liquid circulation of the refrigerant (or, during phase change). Furthermore, the upper reinforcing parts 1240 and the second refrigerant flow path 1220 and the third refrigerant flow path 1230 formed during the sheet metal process using the stamping method can enhance their own rigidity.

[0341] Subsequently, the portion corresponding to the evaporation zone, which serves as the storage area for liquid refrigerant, is similar to the condensation zone. If the refrigerant freezes, the increased volume could damage the joint. Therefore, the portions corresponding to the evaporation zone are designed to be joined with slight gaps between them, minimizing pressure application during refrigerant freezing and allowing for a certain degree of volume expansion and contraction of the liquid refrigerant.

[0342] On the other hand, the refrigerant flow space 1205 may include: a second refrigerant flow path 1210, which is formed into a predetermined pattern shape by sheet metal processing, particularly around the strength reinforcement portion 1240 formed in the condensation region; and a third refrigerant flow path 1230, which is formed between the second refrigerant flow path 1210 and the strength reinforcement portion 1240, and is formed into a shape with a slightly smaller recess than the strength reinforcement portion 1240 by sheet metal processing.

[0343] Typically, the thickness of the second refrigerant flow path 1220 within the refrigerant flow space 1205 is relatively greater than that of the third refrigerant flow path 1230. From this perspective, it performs the following function: if the gaseous refrigerant condenses into liquid refrigerant through heat exchange in the condensation region, it disperses the liquid refrigerant flowing downwards in the direction of gravity due to surface tension or gravity, and guides the liquid refrigerant flow to be captured on the evaporation region side.

[0344] Conversely, considering that the thickness of the third refrigerant flow path 1230 is relatively smaller than that of the second refrigerant flow path 1220, if the liquid refrigerant evaporates into gaseous refrigerant on the evaporation zone side, the evaporated gaseous refrigerant diffuses and disperses through the relatively thin third refrigerant flow path 1230 to the entire condensation zone, thereby enabling active heat exchange.

[0345] The aforementioned second refrigerant flow path 1220 and third refrigerant flow path 1230 are mainly formed in a predetermined pattern shape centered on a plurality of strength-enhancing parts 1240 densely formed on the condensation region side, while the evaporation region side mainly participates only in the storage and evaporation of liquid refrigerant (phase change to gaseous refrigerant). From this point of view, it should be noted that the second refrigerant flow path 1220 and third refrigerant flow path 1230 are not separately formed.

[0346] However, at least one refrigerant dispersion guide 1215a may be formed on the evaporation region side to disperse the refrigerant stored in the condensation region that condenses and flows downwards in the direction of gravity. The refrigerant dispersion guide 1215a may be spaced approximately parallel to the press-in end 1201 attached to the LED unit 1150. Furthermore, it is preferable that the refrigerant dispersion guides 1215a are spaced apart from each other at a predetermined distance within the refrigerant flow space 1205.

[0347] Figure 38 It is shown Figure 30a and Figure 30b A perspective view and a partially enlarged view of the applicable lighting device for the heat dissipation unit in the third implementation example of the structure; Figure 39 yes Figure 38 Exploded 3D diagram; Figure 40 This is a perspective view showing the configuration of an LED unit combined with a heat dissipation unit; Figure 41 yes Figure 40 A three-dimensional view of the cut; Figure 42a It is shown Figure 38 A 3D view of a single heat dissipation unit in the structure; Figure 42b yes Figure 42a Exploded 3D diagram; Figure 43 yes Figure 42a Side view (a), cross-sectional view taken along line CC (b), and enlarged view (c); Figure 44 yes Figure 42a Side view (a); cut perspective view (b) along the CC line and its enlarged view (c).

[0348] In embodiments of the present invention, the heat dissipation unit is not solely composed of, as shown in the example below. Figures 4a to 15 and Figures 24a to 37b The first implementation example 200 and the second implementation example 1200 shown are implemented.

[0349] For example, such as Figure 38 and Figure 39 , Figures 42a to 44 As shown, in the heat dissipation unit 1200' according to the third implementation example, the plurality of strength reinforcement parts 1240 can be implemented by the following other embodiment: they are formed in a uniform and spaced-apart dispersed arrangement throughout the evaporation region and the condensation region, and a plurality of inclined guides 1215 are formed at an inclination in the refrigerant flow space 1205 to guide the condensed liquid refrigerant to flow toward the edge end (limited to the edge end of the condensation region) arranged on the opposite lower side in the direction of gravity.

[0350] Multiple inclined guides 1215 are formed in a manner slightly inclined to the direction of gravity, thereby guiding the liquid refrigerant flowing directly downwards to be uniformly dispersed and flowed throughout.

[0351] On the other hand, in the present invention, the heat dissipation unit 1200'' of the first implementation example 200, the second implementation example 1200 and the fourth implementation example described later may also be equipped with ventilation pipes 270, 1270 and 1270''.

[0352] In the first implementation example 200, the second implementation example 1200, and the fourth implementation example 1200'' described later, the ventilation pipes 270, 1270, and 1270'' can be installed on the outer side of any one of the heat conduction panels 200-1, 1200-1, and 1200''-1 on one side and the heat conduction panels 200-2, 1200-2, and 1200''-2 on the other side.

[0353] The ventilation ducts 270, 1270, 1270'' described above can perform the function of evacuating the refrigerant flow space before or after refrigerant injection.

[0354] From reference Figures 19 to 37bThe second embodiment of the present invention implements a heat dissipation unit 1200 which, after separately manufacturing a ventilation duct 1270, uses a welding auxiliary ring 1275 as a medium to be detachably installed in a ventilation hole 1260 formed in either one of the heat conduction panels 1200-1 on one side or the heat conduction panel 1200-2 on the other side.

[0355] More specifically, the ventilation duct 1270 is installed to communicate with the ventilation hole 1260, and the ventilation hole 1260, which runs from the inside to the outside of the refrigerant flow space 1205 side, can protrude outward before the heat conduction panel 1200-1 on one side and the heat conduction panel 1200-2 on the other side are joined together.

[0356] At this time, the inner end of the ventilation pipe 1270 is formed into a locking shape (not shown). The locking of the ventilation pipe 1270 is engaged with the inner side of the heat conduction panel 1200-1 on one side or the heat conduction panel 1200-2 on the other side where the ventilation hole 1260 is formed. Then, a welding auxiliary ring 1275 is inserted on the outer side to increase the welding surface. Then, the ventilation pipe 1270 is fixed by welding.

[0357] Before welding, the ventilation pipe 1270 that matches the outer end face of the welding auxiliary ring 1275 is cut, and then welding can be performed to seal the hollow of the ventilation hole 1260 and the ventilation pipe 1270 in one go.

[0358] However, as Figure 38 and Figure 39 , Figures 42a to 44 As shown, in the heat dissipation unit 1200' according to the third implementation example, the ventilation duct 1270' is not manufactured separately, but can also be formed into a shape that communicates with the refrigerant flow space 1205 and extends outward by a predetermined length when the heat conduction panel 1200'-1 on one side and the heat conduction panel 1200'-2 on the other side are manufactured by sheet metal process using a stamping die method.

[0359] On the other hand, the heat dissipation unit according to the present invention is not implemented by only one embodiment 1200 and another embodiment 1200' as described above, but rather as follows: Figure 40 and Figure 41 As shown, it can be implemented by another embodiment 2200.

[0360] More specifically, refer to Figure 40 and Figure 41According to another embodiment of the present invention, the heat dissipation unit 2200 may be configured such that a plurality of strength reinforcing parts 2240 are formed on one side of the heat conduction panel 2200-1 and the other side of the heat conduction panel 2200-2. Moreover, instead of the plurality of inclined guides 1215 configured in the heat dissipation unit 2200 of the other embodiment described above, the flow of liquid refrigerant condensed inside the refrigerant flow space 2205 is guided by the pattern arrangement of the plurality of strength reinforcing parts 2240.

[0361] Here, as Figure 41 As shown, in another embodiment of the present invention, the portion of the heat dissipation unit 2200 having a press-in end 1201 can be welded to a plurality of press-in portions 2117 by welding. These press-in portions 2117 are mounted on the mounting panel 1113 of the lighting body 2110 (or...). Figure 38 and Figure 39 In the case of the heat dissipation unit 1200' according to another embodiment of the present invention, the 'LED board mounting block 1151' protrudes a predetermined length toward the rear side of the heat dissipation unit 2200.

[0362] In this regard, the heat dissipation unit 2200 according to another embodiment of the present invention and the reference Figure 38 and Figure 39 The heat dissipation unit 1200 according to another embodiment of the present invention is similarly installed in the insertion slot 2118 formed in the mounting panel 2113 of the lighting body 2110 by a press-fit method.

[0363] However, as Figure 38 and Figure 39 As shown, in another embodiment of the heat dissipation unit 1200 according to the present invention, the insertion slot 1157 is configured to be a part of the mounting panel 1113 cut and processed. However, in another embodiment of the heat dissipation unit 2200 according to the present invention, the insertion slot 2118 for fixed installation is the opposite. The difference is that the above-mentioned insertion slot 2118 is formed inside a plurality of press-in portions 2117 that protrude rearward from the mounting panel 2113.

[0364] Here, an epoxy resin bonding method can be used, where epoxy resin is injected between the front of the mounting panel 2113 and the LED board mounting block (not shown in the figure) of the LED unit 2150 for bonding.

[0365] Alternatively, before inserting and fixing the heat dissipation unit 2200 according to another embodiment of the present invention into the insertion groove 2118 of the mounting panel 2113 by pressing, an epoxy resin bonding method can also be applied inside the insertion groove 2118 to achieve bonding after injecting epoxy resin.

[0366] As described above, the epoxy resin bonding method for fixing the insertion groove 2118 eliminates the welding method, thus preventing heat-induced deformation when the absorber 2300, which is additionally installed on the first refrigerant flow path 2110 to promote the evaporation of liquid refrigerant, is fixed by welding.

[0367] In addition, the epoxy resin bonding method of the heat dissipation device 2210 according to another embodiment of the present invention performs the following function: while maintaining a high heat transfer rate, the heat generated from the LED unit 2150 is transferred through the mounting panel 2113 to the first refrigerant flow path 2210 corresponding to the press-in end 2201 side of the heat dissipation unit 2200.

[0368] Figure 45 It is shown Figure 28a and Figure 28b The internal perspective view (side view) of the heat dissipation unit in the fourth implementation example of the structure; Figure 46 yes Figure 45 An exploded 3D diagram.

[0369] like Figure 45 and Figure 46 As shown, in a lighting device 100 according to an embodiment of the present invention, the heat dissipation unit 1200'' can be implemented by a fourth implementation example.

[0370] More specifically, the heat dissipation unit 1200'' according to the fourth implementation may also include an absorber 1300 disposed on the refrigerant flow space 1205.

[0371] The absorber 1300 is typically configured on the first refrigerant flow path 1210 to facilitate the action of liquid refrigerant in the thermally evaporating refrigerant supplied from the LED unit 1150.

[0372] Here, the absorber 1300 may be composed of either a braided body woven with thermally conductive metal wires or a sintered body formed by sintering metal powder of a predetermined material.

[0373] When the absorber 1300 is made of a sintered body, the absorber arranged near the press-in end 1201 side corresponding to the evaporation region is defined as the evaporation section sintered body 1310, the multiple absorbers arranged on the evaporation plate section 1203 side corresponding to the condensation region are defined as sintered body columns 1320, and the absorber connecting the lower ends of the multiple sintered body columns 1320 can be defined as the sintered body base 1330.

[0374] Here, multiple sintered body pillars 1320 can be combined with the inner side of the refrigerant flow space 1205 by using the sintered body base 1330 connected to one end (lower end) of each pillar as a medium.

[0375] Here, the material constituting the aforementioned metal powder in the evaporation section sintered body 1310, the plurality of sintered body pillars 1320 and the sintered body base 1330 can be limited to SUS material.

[0376] On the other hand, the heat conduction panel 1200''-1 on one side and the heat conduction panel 1200''-2 on the other side can be laminated together by welding. In addition to conventional welding, laser welding may also be used for welding.

[0377] However, the joining method of one side heat conduction panel 1200''-1 and the other side heat conduction panel 1200''-2 is not limited to the welding method described above, and the method of layering by brazing is not excluded.

[0378] On the other hand, the heat conduction panel 1200''-1 on one side and the heat conduction panel 1200''-2 on the other side can be joined at the contacting parts of the frame ends by butt welding, but if Figure 45 and Figure 46 As shown, a welding frame 1250 corresponding to the edge of the frame of the heat conduction panel 1200''-1 on one side and the heat conduction panel 1200''-2 on the other side can also be configured. Using the welding frame 1250 as a medium, the evaporation section sintered body 1310, multiple sintered body columns 1320 and sintered body base 1330 can be welded together with the heat conduction panel 1200''-1 on one side and the heat conduction panel 1200''-2 on the other side.

[0379] On the other hand, in the lighting devices 100 and 1000 according to embodiments of the present invention, when the metal panel component constituting the heat dissipation unit 200, 1200, 1200', 1200'' according to the first to fourth embodiments is made of SUS (stainless steel), water can be used as a refrigerant compared to aluminum (including aluminum alloys). This is because, unlike aluminum, almost no chemical reaction occurs internally when water is used as a refrigerant.

[0380] According to the lighting devices 100 and 1000 of the present invention, which are constructed by a combination of the structures described above, effective heat dissipation can be achieved by a plurality of heat dissipation units 200, 1200, 1200', and 1200'' extending relatively upward in the direction of gravity when the heating surface of the LED unit 1150 is formed in a slightly narrow area. From this point of view, it has the advantage of not only improving light distribution performance but also preventing a decrease in product lifespan.

[0382] The lighting device according to embodiments of the present invention has been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the above-described embodiments, and those skilled in the art to which this invention pertains can certainly make various modifications and implement it within the equivalent scope. Therefore, the true scope of the present invention should be defined by the claims.

[0383] Industrial applicability

[0384] The present invention provides a lighting device including a heat dissipation unit that can effectively dissipate heat generated from LED units, thereby maximizing heat dissipation performance.

Claims

1. A lighting device comprising: an LED unit having a plurality of LED elements mounted on one of two surfaces and forming a radiation surface that radiates light, and forming a heat generating surface that releases predetermined heat on the other of the two surfaces; a plurality of heat radiating units vertically arranged in a gravity direction above and below with respect to the heat generating surface of the LED unit, and arranged at a predetermined distance apart in a left and right direction, and internally forming a refrigerant flow space filled with a changeable refrigerant; and a lighting body mounting the LED unit and the plurality of heat radiating units, and a portion in the direction of the radiation surface being open.

2. The lighting device according to claim 1, wherein the plurality of heat radiating units receive heat of the LED unit as a medium through the lighting body, which mounts the LED unit, and a plurality of press-in portions are formed in a vertically direction above a position corresponding to the heat generating surface.

3. The lighting device according to claim 2, wherein the plurality of heat radiating units are pressed into and fixed in the press-in portions so that at least a portion of the refrigerant flow space is located inside the plurality of press-in portions formed by a pair of groove ribs.

4. The lighting device according to claim 1, wherein one surface of the plurality of heat radiating units contacts the LED unit, and the other surface receives heat of the LED unit as a medium through a heat transfer medium block formed with a concave-convex portion that thermally contacts the refrigerant flow space side.

5. The lighting device according to claim 4, wherein the concave-convex portion of the heat transfer medium block is inserted from the outside to the refrigerant flow space side to contact liquid refrigerant filled in the refrigerant flow space.

6. The lighting device according to any one of claims 1 to 5, wherein the refrigerant flow space of the plurality of heat radiating units includes: a first refrigerant flow path constituting an evaporation region that evaporates liquid refrigerant filled inside by heat transferred from the LED unit; and a plurality of second refrigerant flow paths arranged in a condensation region that diffuses gaseous refrigerant evaporated in the first refrigerant flow path side, condenses the gaseous refrigerant by heat exchange with outside air, and guides condensed liquid refrigerant to flow to the first refrigerant flow path side.

7. The lighting device according to claim 6, wherein the plurality of heat radiating units include a one-side heat conducting panel and a other-side heat conducting panel, the one-side heat conducting panel forms one side of the refrigerant flow space, and the other-side heat conducting panel forms the other side of the refrigerant flow space, the one-side heat conducting panel and the other-side heat conducting panel are joined to form the refrigerant flow space as a single metal panel member by bending, or are joined to form the refrigerant flow space as two metal panel members.

8. The lighting device according to claim 7, wherein a material of the metal panel member constituting the one-side heat conducting panel and the other-side heat conducting panel is a stainless steel material.

9. The lighting device according to claim 8, wherein In a case where the material of the metal panel member constituting the one-side heat-conducting panel and the other-side heat-conducting panel is a stainless steel material, the refrigerant is water.

10. The lighting device according to claim 7, wherein the plurality of heat-dissipating units further include a plurality of strength reinforcement portions which are formed so as to protrude from the one-side heat-conducting panel and the other-side heat-conducting panel toward the refrigerant flow space side; the plurality of strength reinforcement portions are engaged with each other in the refrigerant flow space when the one-side heat-conducting panel and the other-side heat-conducting panel are engaged with each other.

11. The lighting device according to claim 8, wherein the plurality of heat-dissipating units further include an absorption body, the absorption body is disposed on the first refrigerant flow path in the refrigerant flow space so as to promote evaporation of liquid refrigerant in the refrigerant by heat supplied from the LED unit.

12. The lighting device according to claim 11, wherein the absorption body is made of any one of a woven body of woven heat-conducting metal wire and a sintered body of sintered metal powder of a predetermined material.

13. The lighting device according to claim 12, wherein in a case where the absorption body is made of the sintered body, the metal powder constituting the sintered body is a stainless steel material constituting the one-side heat-conducting panel and the other-side heat-conducting panel.

14. The lighting device according to claim 8, wherein the plurality of heat-dissipating units further include a vent pipe, the vent pipe is used to vacuumize the refrigerant flow space before or after the refrigerant is injected into the refrigerant flow space.

15. The lighting device according to claim 14, wherein the vent pipe is combined with or integrated with any one of the one-side heat-conducting panel and the other-side heat-conducting panel.

16. The illumination device of claim 1, wherein, Further comprising: a finger guard plate assembly disposed so as to cover the plurality of heat-dissipating units except for the radiation surface of the LED unit and formed with a plurality of air vent holes through which outside air is circulated to exchange heat with the plurality of heat-dissipating units.

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